• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    FLUID STORAGE TANK CONFIGURED TO REMOVE EXISTING AIR FROM THE FLUID. The fluid storage tank including an existing air removal mechanism is provided. The existing air removal mechanism helps to consolidate small air bubbles within the fluid into larger bubbles so that the air bubbles tile sufficiently to float away from the fluid flow. The existing air removal mechanism can be in the form of a plurality of sawtooth slits communicating different chambers within the fluid storage tank. The fluid storage tank can also be configured to direct fluid flow towards the side walls of the fluid storage tank as the fluid moves from one chamber to another to promote heat transfer from the fluid storage tank and to prevent the fluid inside the tank from acting as a thermal insulator.
    公开号:BR112012029936B1
    申请号:R112012029936-0
    申请日:2011-05-24
    公开日:2021-03-09
    发明作者:Bruce E. Knuth
    申请人:Helgesen Industries, Inc；
    IPC主号:
    专利说明:

    Field of the Invention
    [001] This invention generally relates to fluid storage tanks and more particularly to fluid storage tanks that remove the existing air and heat from the fluid stored therein. Fundamentals of the Invention
    [002] Many devices use fluids as a means of supplying power to other devices. For example, many devices such as trucks, heavy equipment, construction equipment, farm equipment, etc. they will use a hydraulic system that uses pressurized hydraulic fluid (typically oil) to operate hydraulic motors, hydraulic drive cylinders, etc.
    [003] Unfortunately, the hydraulic fluid returning from a hydraulic system contains air in the form of microscopic bubbles. The source of this air can be a number of locations such as hydraulic cylinder rod seals, motor shaft and hydraulic pump seals and turbulence within the reservoir itself. Traditionally, the means by which to deal with this contamination is to build the reservoir large enough to increase the surface contact between the hydraulic fluid and the air inside the tank. The greater amount of surface area and size of the tank allows the existing air to escape traveling to the surface of the reservoir, before the oil returns to the pump inlets.
    [004] Furthermore, as the hydraulic fluid is cycled through a system, the fluid acquires thermal energy. Unfortunately, larger tank sizes are typically required to extract this excess heat.
    [005] The present invention relates to improvements in the prior art. Summary of the Invention
    [006] The modalities of the present invention refer to new and improved fluid storage tanks. More particularly, the embodiments of the present invention relate to new and improved fluid storage tanks to remove existing air from the fluid stored within and passing through the fluid storage tank. Even more particularly, the embodiments of the present invention relate to new and improved fluid storage tanks to remove the existing air from the fluid stored in them which uses devices to promote the nucleation of the existing air within the fluid to improve its removal.
    [007] In one embodiment, a fluid storage tank with improved air extraction capabilities is provided. The fluid storage tank includes a nucleation plate with nucleation slits formed in it that cause the existing small air bubbles to nucleus or clump into larger bubbles that have sufficient fluctuation to overcome the flow forces acting on the air bubbles.
    [008] In a more preferred embodiment, the nucleation slits are saw-toothed slits having a plurality of peaks and valleys that increase the nucleation surfaces of the nucleation slits to promote the consolidation of microscopic air bubbles into larger bubbles.
    [009] In a more preferred embodiment, the surfaces of the sawtoothed crevices have a surface roughness between 40 and 70 Ra in order to promote the capture of microscopic air bubbles on the surface of the nucleation crevices.
    [010] In one embodiment, the nucleation surfaces are preferably angled downwards relative to the upper surface of the fluid within the fluid storage tank when traveling downstream. This directs the flow of fluid away from the surface of the tank to inhibit the production of turbulence on the fluid surface of the tank and further inhibit the entry of air. Furthermore, the nucleation plate, including these nucleation slits, is preferably angled with respect to the upper surface of the fluid. This angle is preferably between approximately 30 and 60 degrees and more preferably between approximately 40 and 50 degrees. This angle also causes fluid bubbles formed on the upper surface of the nucleation slits to be pressed on the upper surface instead of being pressed from the surfaces so that it is more difficult to discharge the consolidating bubbles from the nucleation surfaces allowing the formation of bubbles of increased size. However, other modalities may have a surface roughness of less than 135 Ra.
    [011] In other embodiments, the nucleation surfaces can be angled upwards in relation to the upper surface of the fluid. This arrangement reduces the resistance of the fluid flow (ie, back pressure) by allowing the fluid to flow through the slits at a slower rate. Such arrangements typically have an angle between approximately 120 and 150 degrees and more preferably 130 and 140 degrees and preferably approximately 135 degrees.
    [012] Directing the flow of fluid towards the upper surface of the fluid also promotes the formation of bubbles. It was concluded that bubbles form at a higher rate at higher locations within the fluid flow. This is due to the reduced pressure closest to the fluid surface preventing bubbles from forming. Thus, by directing the fluid to the top of the surface, the formation of bubbles can be promoted, for these reasons.
    [013] However, this angle may change due to the flow rate of the fluid through the fluid storage tank and the physical properties of the fluid. As such, the applicant reserves the right to claim any particular range or individual value of angle α between 30 and 60 degrees and 120 and 150 degrees.
    [014] In an additional embodiment, the height of the slits, that is, perpendicular to the flow through the slits, is between approximately 1.5875 mm and 12.7 mm (1/16 and 1/2 inch). Most preferably, the height is approximately 3.175 mm (1/8 inch). This height can be measured at the peaks or in the valleys of the sawtoothed surfaces.
    [015] In an additional embodiment, the fluid storage tank includes at least one inlet and one air extraction zone. The entry zone is immediately upstream of the nucleation slits and the air extraction zone is immediately downstream of the nucleation slits. The top of the inlet zone is vertically lower than the top of the air extraction zone. In addition, in operation, the hydraulic fluid level is maintained at a depth that is always higher than the top of the inlet zone. This prevents a hydraulic fluid interface within the inlet zone by reducing the amount of air inlet due to the turbulence generated by the hydraulic fluid as it enters the inlet zone.
    [016] An additional modality includes a redirection zone immediately downstream of the air extraction zone. This zone causes the fluid to be redirected from its flow direction within the air extraction zone. This redirection allows the enlarged bubbles to be expelled from the fluid flow. Similarly, in one embodiment, the fluid storage tank includes an outlet zone downstream of the redirection zone. Again, the fluid flow is redirected as it exits the redirection zone to the exit zone. Preferably, redirections in and out of the target zone result in a change in direction between 150 and 180 degrees.
    [017] The devices (ie, metal plates) that separate the various parts of the fluid storage tank in the various different zones, are preferably thermally connected to the wrap of the fluid storage tank in order to promote more heat transfer to the wrap for subsequent heat dissipation (welding). As such, these additional structures function as heatsinks.
    [018] In an additional embodiment, the nucleation slits are formed on the sides of the tank and not in the center of the nucleation plate. This causes the fluid to be directed laterally outwards towards the sides of the fluid storage tank to promote heat transfer to the envelope, that is, housing, from the tank in order to improve the extraction of heat from the tank. As such, in one embodiment, a continuous part of the nucleation plate is in the center of the plate forcing the flow of fluid laterally towards the sides. In addition, in one embodiment, the nucleation slits do not extend through the center of the nucleation plate.
    [019] Other aspects, objectives and advantages of the invention will become clearer from the following detailed description when taken in conjunction with the attached drawings. Brief Description of Drawings
    [020] The attached drawings incorporated and forming a part of the specification illustrate various aspects of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings:
    [021] FIG. 1 is a partial perspective illustration of the fluid storage tank according to an embodiment of the present invention with one side removed showing its internal components.
    [022] FIG. 2 is an enlarged plan view of a bank of nucleation slits formed on a nucleation plate of the fluid storage tank of FIG. 1.
    [023] FIG. 3 is a side cross-sectional illustration of the storage tank of FIG. 1 which schematically illustrates the formation and extraction of bubbles from the tank.
    [024] FIGS. 4 and 5 are perspective illustrations of the nucleation slits.
    [025] FIG. 6 illustrates an alternative embodiment, similar to that of FIG. 3.
    [026] While the invention will be described in conjunction with certain preferred modalities, there is no intention to limit it to those modalities. On the contrary, the intention is to cover all alternatives, modifications and equivalents included within the spirit and scope of the invention as defined by the appended claims. Detailed Description of the Invention
    [027] FIG. 1 is a perspective illustration of a fluid storage tank 100 according to an embodiment of the present invention. The fluid storage tank 100 is used to store fluid for use in a downstream system (not shown). In one embodiment, the system is a hydraulic system that uses fluid as a means to transmit energy to or from devices in the system, such as engines, pumps, hydraulic cylinders, etc.
    [028] Fluid storage tank 100 includes a fluid inlet 102 where the return fluid that has passed through the system returns to fluid storage tank 100. Inlet 102 may be in the form of a threaded coupling, a quick-connect coupling, or other coupling to which a fluid duct or hose can be connected. The fluid storage tank 100 also includes an outlet 103 through which the stored fluid leaves the fluid storage tank 100. That outlet 103 can be similar to inlet 102. Typically, outlet 103 is coupled to a suction source such as like a hydraulic pump.
    [029] In this particular embodiment, the fluid storage tank 100 includes a filter housing 104 in which the fluid filter can be stored to filter the return fluid before it is mixed with the rest of the fluid stored in the storage tank. 100. The filter housing 104 has a filter opening through which the filter can be removed or inserted during maintenance intervals. The filter housing 104 has an outlet 108 near the bottom of the fluid storage tank 100 from which the filtered fluid leaves filter housing 104.
    [030] The fluid storage tank 100 of this modality has a wrap (or outer shell) that has generally rectangular sides; however, other forms can be used.
    [031] The fluid storage tank 100 is configured to remove the existing air from inside the hydraulic fluid flowing through the fluid storage tank 100, as well as promoting the extraction of heat from it. As such, a smaller fluid storage tank incorporating the features of the present invention can be used while still allowing for proper extraction of air and heat.
    [032] To remove air, the fluid storage tank 100 includes a nucleation plate 110 (also called a bubble formation plate) configured to cause small microscopic air bubbles within the hydraulic fluid to consolidate and form larger air bubbles. The larger bubbles increase the buoyancy forces in an individual air bubble allowing the bubbles to overcome the forces of the fluid flow acting on the bubbles as the hydraulic fluid flows through the fluid storage tank 100.
    [033] It was concluded that fluid storage tanks including a nucleation system in accordance with the teachings of the modalities of the present invention for nuclear microscopic air bubbles can remove up to 33% more existing air than the storage tank of fluid of comparable size without such a nucleation system.
    [034] As shown in FIG. 1, the nucleation plate 110 includes a plurality of nucleation slits 112 (also called "formation slits"). The nucleation slits 112 are configured to cause microscopic air bubbles within the hydraulic fluid to adhere to the surface of the slits 112. As more and more air adheres to the surfaces of the slits 112, the individual bubbles will consolidate into larger bubbles . Once they are removed from the nucleation plate 110, due to the fluid flow, the bubbles are large enough to overcome the flow forces generated by the flow of fluid through the fluid storage tank.
    [035] The nucleation plate 110 is angled with respect to the top 114 of the fluid storage tank 100 and consequently to the upper surface 116 of the hydraulic fluid 118 by an angle α between 30 and 60 degrees and more preferably between approximately 40 and 50 degrees and preferably approximately 45 degrees. However, this angle may change due to the fluid flow rate through the fluid storage tank 100 and the physical properties of the fluid 118. As such, the applicant reserves the right to claim any particular range or individual value of angle α in the range between 30 and 60 degrees identified above
    [036] Furthermore, the inclination of the nucleation plate 110 is configured so that the fluid flows vertically downwards as it passes through the nucleation slits 112. This is done to reduce turbulence on the upper surface 116 of the fluid to reduce the likelihood of more air entering.
    [037] With respect to FIG. 2, to promote the adherence of microscopic air bubbles to the surfaces of the nucleation slits 112, the slits 112 are generally sawn: formed by a plurality of alternating peaks and valleys, generally referred to with reference numbers 120, 122, respectively. However, specific peaks and valleys may have particular reference numbers.
    [038] In one embodiment, the upper peaks align laterally with the lower peaks, as illustrated by peaks 130, 132. In this arrangement, the tips of peaks 130 form a downward neck region 134 between them. Similarly, the upper valleys align with the lower valleys, as illustrated by valleys 136, 138 forming wider spaces in them. As such, the vertical space H between the upper surface 140 of the slits 112 and the lower surface 142 of the slits 112 alternates between small and large values as one travels laterally inward towards the center of the nucleation plate 110.
    [039] In addition, the peaks and valleys 120, 122 provide a sawtooth shape to the upper and lower surfaces 140, 142 and maximize the amount of surface on which bubble consolidation can occur. As the condition of surfaces 140, 142 affects the amount of air that can be captured or removed from the fluid, a surface roughness of not less than 40 Ra is desired with a preferred surface roughness between approximately 60 and 80 Ra and more preferably approximately 65 and 75 Ra and even more preferably approximately 70 Ra. The surface roughness promotes the amount of microscopic bubbles that will become captured on the surfaces of the slits 112. However, in some embodiments, the surface roughness can be up to 130 Ra. This increases the growth of the bubble size and increases the fluctuation of the individual bubbles, as the bubbles detach from the nucleation plate 110 and re-enter the fluid flow through the fluid storage tank 100. The increase in the size of the bubbles it makes it easier for bubbles to overcome the forces of fluid flow and float on top of the hydraulic fluid and be removed from it.
    [040] FIG. 3 is a schematic representation of the fluid flow through the fluid storage tank 100 and the non-scaled size of the air bubbles within the hydraulic fluid 118 as it passes through the fluid storage tank 100.
    [041] As a preliminary note, the fluid storage tank 100 is divided into four (4) different zones. The first zone (1) is an inlet zone (also called “inlet chamber 145”) in which the gross return fluid enters the fluid storage tank 100. This zone is usually limited by a part of the external housing of the fluid storage tank 100, nucleation plate 110 and an upper anti-swirl plate 146. In FIG. 3, it can be seen that the depth D of the fluid is greater than the height H2 of the upper plate 146. As such, there is no air pocket between the fluid 118 and the upper plate 146 inside the inlet chamber 145.
    [042] This is because as the return fluid enters the inlet chamber 145, the fluid is flowing at a rapid rate. As the fluid flows vertically upward, if the fluid were in direct contact with an air bag, turbulence on the top surface of the fluid would promote the entry of more air into the hydraulic fluid 118. However, by eliminating the air bag in this part of the fluid storage tank 100, a turbulent air-fluid interface is eliminated. This arrangement also keeps all nucleation slits 112 submerged in hydraulic fluid to promote the nucleation process. More particularly, slits 112 will remain submerged even during fluctuations in the fluid level in the tank (i.e., depth D in FIG. 3).
    [043] The fluid storage tank has a second zone (2), which is also called an air extraction chamber 148 in which most air bubbles are extracted from the hydraulic fluid. The air extraction chamber 148 is on the opposite side of the nucleation plate 110 as the inlet chamber 145. Thus, as illustrated in FIG. 3, the microscopic air bubbles 150 inside the fluid 118 in the inlet chamber 145 are significantly smaller than the nucleated bubbles 152 inside the air extraction chamber 148. These bubbles 152 got rid of the nucleation slits 112 (which can also be called "formation slits") and are overcoming the forces of fluid flow within the air extraction chamber 148 so that larger air bubbles 152 can escape the fluid flow and float to the surface 116 of fluid 118.
    [044] The third zone (3) can be called the redirection zone 154 which causes the fluid flow to change direction twice. By changing the direction of the fluid flow, this promotes the discharge of the larger existing air bubbles 152 of the hydraulic fluid. At that point, the fluid flow is completely conditioned fluid that had existing air removed from it. As the fluid moves from the second zone to the third zone, a first change in the direction of approximately 180 degrees is generated. When the flow transits from the third zone to the fourth zone, a second change in the direction of approximately 180 degrees is generated.
    [045] In the illustrated embodiment, the redirection zone 154 is formed between two generally parallel plates 160, 162. The plates 160, 162 abut against a continuous part of the nucleation plate 110. The opposite end of the upper plate 160 is supported by a pair of legs 164 to form an inlet opening 166. A plurality of openings 168 formed in the bottom plate 168 allows the fully conditioned fluid to flow into an outlet chamber 170, i.e., the fourth zone.
    [046] Due to the inclusion of the upper plate 146, a fifth zone or dead zone 172 can be considered to be inside the fluid storage tank 100. That zone can be sealed off from the rest of the tank 100. Alternatively, the upper plate 146 can include slits so that the fluid is allowed to flow into that zone during the expansion of the fluid level within the fluid storage tank 100.
    [047] In some cases, systems according to the present invention can increase air extraction by up to 33% over tanks of similar size without such a nucleation arrangement.
    [048] Slits 112 are generally aligned horizontally in the illustrated mode. This causes the upper surface 140 (see FIG. 2) of the slits to be angled downwards when traveling in the downstream direction. This causes the fluid flow to be pressed on that upper surface, increasing the formation of larger bubbles. This promotes increased air extraction from the fluid. The angle of the surfaces 140, 142 corresponds to the angle α. However, as noted above, the surfaces may preferably extend vertically downward in the direction of the fluid flow.
    [049] In general, it is preferable to have the sum of the open area of the nucleation slits 112 equal to or greater than the smaller cross-sectional area of the flow path through the reservoir in order to avoid the introduction of backpressure in the upstream flow due to nucleation slits 112. In addition, length L, height H and number of slits 112 are desired to be such that the flow velocity, V, through the slit area has a minimum between approximately 0.329 and 0.548 km / h (0 , 3 and 0.5 feet / s) and a maximum between approximately 5.583 km / h and 9.875 km / h (6 and 9 feet / s). The thickness, T, of the nucleation plate 110 (and consequently the length of the upper and lower surfaces 140 and 142 parallel to the fluid flow through them) is preferably greater than 3 mm and not more than 10 mm and preferably not more than than 8 mm for the flow speed range indicated above. The thicker materials can cause localized turbulence causing the formed bubbles to be prematurely discharged from the surfaces before they have grown to a desired size. As such, the bubbles discharged will not have adequate floatation to overcome the flow forces. As such, these bubbles will remain in the fluid flow and pass through outlet 103.
    [050] As more air can be drawn from the tank, regardless of the amount of air-fluid interface area and the volume of the tank, smaller tanks can be used while maintaining the same amount of air removal.
    [051] An additional feature of the present invention is that slits 112 are formed on the sides of the nucleation plate 110 so that slits 112 are positioned adjacent the side walls 180 (only one shown in FIG. 1) of the storage tank. fluid 100. This arrangement directs the flow of fluid from outlet 108 to flow laterally toward sides 180 of tank 100. This reduces the volume of dead heat transfer points within tank 100.
    [052] When the inlet (i.e., inlet 102) and outlet 103 are laterally aligned with each other, the flow will tend to pass through the center of tank 100. Some displacement of flow from the central flow between the inlet and the output will become relatively still. This laterally stopped external fluid will create a thermal insulator reducing the heat extraction properties of the tank.
    [053] As such, by forcing the fluid to flow laterally outward, that is, towards the side walls 180, these dead spots are reduced. In addition, this causes more fluid flow to contact the side walls 180 promoting convection between the side walls 180 and the fluid flow increasing the heat extraction properties of the tank 100.
    [054] As such, in one embodiment, the slits extend across an edge, that is, the edge 182 of the nucleation plate. Slits 112 are closed by the side walls 180 of the tank 100 so that the slits are limited in part by the side walls 180 and the nucleation plate 110. Furthermore, in the illustrated embodiment, the nucleation plate 110 includes a continuous part 186 laterally interposed between the slits 112. As such, there are two banks of slits 112 on opposite sides of the continuous part 186. The continuous part forces the flow of fluid laterally towards the sides 180.
    [055] Increased heat extraction also allows for smaller tank sizes.
    [056] In addition, the number of slits 112 can be adjusted to change the pressure characteristics of the corresponding slit banks 112 to adjust the fluid flow to different sides of the tank 100.
    [057] FIG. 6 is an additional embodiment of a fluid storage tank 200 similar to the previous embodiments. However, in this embodiment, the nucleation plate 210 extends at an angle α 'which is greater than 90 degrees in the direction of fluid flow through the nucleation slits 212. This angle α' directs the flow of fluid through the slits of nucleation 212 towards the upper surface 216 of the fluid.
    [058] This arrangement reduces the resistance of the fluid flow (ie, back pressure) allowing the fluid to flow through the slits at a lower rate. Such arrangements typically have an angle α 'between approximately 120 and 150 degrees and more preferably 130 and 140 degrees and preferably approximately 135 degrees with respect to the upper surface 216.
    [059] The direction of fluid flow towards the upper surface 216 promotes the formation of bubbles. It was concluded that bubbles form at a higher rate at higher locations within the fluid flow. This is possible due to the reduced pressure closest to the fluid surface 216, promoting the formation of bubbles.
    [060] All references, including publications, patent applications, and patents cited here, are incorporated by reference to the same degree as if each reference were individually and specifically indicated to be incorporated by reference and have been presented in full here.
    [061] The use of the terms "one" and "one" and "o" and "a" and similar referents in the context of describing the invention (especially in the context of the following claims) is interpreted as covering both the singular and the plural, unless otherwise indicated here or clearly contradicted by the context. The terms "comprising", "having", "including" and "containing" are interpreted as open terms (that is, they mean "including, but not limited to"), unless otherwise noted. The quote of ranges of values here is merely intended to serve as a shortcut method of referring individually to each separate value within the range, unless otherwise indicated here, and each separate value is incorporated into the specification as if it were individually quoted here. All of the methods described can be performed in any appropriate order, unless otherwise indicated here or otherwise clearly contradicted by the context. The use of any and all examples, or exemplified language (for example, "as") provided here, is intended merely to further clarify the invention and does not propose a limitation on the scope of the invention, unless otherwise claimed. No language in the specification should be interpreted as indicating any element not claimed as essential to the practice of the invention.
    [062] The preferred embodiments of this invention are described here, including the best way known to the inventors for carrying out the invention. Variations in these preferred modalities can be made clear to those skilled in the art by reading the previous description. The inventors expect those skilled in the art to employ such variations as appropriate, and intend for the invention to be practiced in a manner other than that specifically described herein. Consequently, this invention includes all modifications and equivalents of the subject mentioned in the appended claims as permitted by applicable law. Furthermore, any combination of the elements described above in all possible variations of these is covered by the invention, unless otherwise indicated here or clearly contradicted by the context.
    权利要求:
    Claims (17)
    [0001]
    1. Fluid storage tank, FEATURED for comprising: a housing that defines an internal cavity, an inlet and an outlet; and an air removal mechanism within the internal cavity fluidly interposed between the inlet and outlet so that all the fluid that passes through the inlet and outlet passes through the existing air removal mechanism; and where the existing air removal mechanism is a separating plate within the housing that separates the internal cavity into at least a first chamber and a second chamber, the plate includes a plurality of slits through it that communicate fluidly the first chamber with the second chamber; which also includes third and fourth chambers, the fluid doing the first flow redirection as it moves from the first chamber to the second chamber and a second flow redirection, opposite to the first flow redirection, as the flow transits from the second chamber to the third chamber and a third flow redirect, opposite the second flow redirect, as the flow transits from the third chamber to the fourth chamber.
    [0002]
    2. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the separation plate is angled in relation to the upper surface of the fluid in the tank.
    [0003]
    3. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the plurality of cracks includes a plurality of peaks and valleys that provide a sawtooth profile on at least one side of the cracks.
    [0004]
    4. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the surface roughness of at least one side of the slits is at least 40 Ra, and in which the surface roughness of at least one side of the cracks is not greater than 70 Ra.
    [0005]
    5. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the housing has a pair of opposite side walls that generally extend between the entrance and the exit, where the cracks are limited at one end by one of the opposite side walls.
    [0006]
    6. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the housing has a pair of opposite side walls that generally extend between the inlet and the outlet, the separation plate extends between the opposite side walls , where the plurality of slits includes a first bank of slits adjacent to one of the side walls and a second bank of slits adjacent to the other of the side walls; and wherein the first and the second slit bank are separated by a continuous part of the plate forcing the flow of fluid towards the opposite side walls and not through the center of the plate.
    [0007]
    7. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the slits are angled vertically downwards in the direction of fluid flow through the slits.
    [0008]
    8. Fluid storage tank according to claim 2, CHARACTERIZED by the fact that the first and second flow redirects are between approximately 150 and 180 degrees.
    [0009]
    9. Fluid storage tank according to claim 2, CHARACTERIZED by the fact that the separation plate has a thickness between approximately 3 mm and 8 mm and in which the slots have a maximum height between approximately 1.5875 mm and 12 , 7 mm (1/16 and 1/2 inch) .10. Fluid storage tank according to claim 2, CHARACTERIZED by the fact that the angle is between approximately 30 and 60 degrees.
    [0010]
    11. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that the combined surface area of the slits is at least equal to the surface of the other openings within the fluid storage tank in order to avoid flow resistance increased in the fluid through the tank due to the cracks.
    [0011]
    12. Fluid storage tank according to claim 1, CHARACTERIZED by the fact that an upper plate of the first chamber is vertically higher than an upper plate of the second chamber so that the fluid level inside the second chamber can be maintained at a higher level than in the first chamber.
    [0012]
    13. Fluid storage tank according to claim 2, CHARACTERIZED by the fact that the angle is between approximately 120 and 160 degrees, so that the flow of fluid through the slits is directed to the top of the fluid storage tank .
    [0013]
    14. Method for conditioning a hydraulic fluid, CHARACTERIZED because it includes the steps of: passing the hydraulic fluid through the fluid storage tank; and passing the fluid through an air removal mechanism inside the tank; wherein the step of passing the fluid through an air removal mechanism within the tank includes passing the fluid through a first chamber to a second chamber through a separation plate having a plurality of slits formed through it fluidly communicating the first and second chamber.
    [0014]
    15. Method according to claim 14, CHARACTERIZED by the fact that the step of passing the fluid through an air removal mechanism inside the tank includes consolidating the existing air bubbles inside the hydraulic fluid into larger bubbles, while the fluid passes through the plurality of cracks and in which the cracks have a sawtooth profile and the faces of the teeth have a surface roughness between approximately 40 Ra and 70 Ra.
    [0015]
    16. Method according to claim 14, CHARACTERIZED by the fact that it includes the steps of: directing the fluid to the side walls of the tank to promote heat transfer between the hydraulic fluid and the side walls of the tank; and wherein the step of directing the fluid includes separating the fluid into two separate streams as they pass through a separating plate, the separating plate having openings adjacent to the side walls and a continuous section in the center of the plate between the slits adjacent to the opposite side walls in order to prevent the flow of fluid through the center of the plate and which forces the fluid towards the side walls.
    [0016]
    17. Fluid storage tank comprising: a housing that defines an internal cavity, an inlet and an outlet; and an air removal mechanism within the internal cavity fluidly interposed between the inlet and outlet so that all the fluid that passes through the inlet and outlet passes through the existing air removal mechanism; and where the existing air removal mechanism is a separating plate within the housing that separates the internal cavity into at least a first chamber and a second chamber, the plate includes a plurality of slits through it that communicate fluidly the first chamber with the second chamber, CHARACTERIZED by the fact that the plurality of cracks includes a plurality of peaks and valleys that provide a sawtooth profile on at least one side of the cracks.
    [0017]
    18. Fluid storage tank according to claim 17, further characterized by the fact that it includes third and fourth chambers, the fluid making the first flow redirect as it moves from the second chamber to the third chamber in a second redirect flow, opposite to the first flow redirection, as the flow transits from the third chamber to the fourth chamber; and where the first and second flow redirects are between approximately 150 and 180 degrees.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012029936B1|2021-03-09|fluid storage tank, and method for conditioning a hydraulic fluid
    US7531026B2|2009-05-12|Deaeration device and method of use
    US9243851B2|2016-01-26|Heat exchange tube and method of using the same
    US9109609B2|2015-08-18|Submersible pump motor cooling through external oil circulation
    EP3084218A2|2016-10-26|Compressor for a vehicle air supply system
    CN104520553B|2017-12-26|Degassing tank and the motor vehicles cooling system for being provided with the degassing tank
    CN202970886U|2013-06-05|Heat exchanger with expansion tank and machine using the same
    US10077947B2|2018-09-18|Cooling assembly and method for manufacturing the same
    ES2175947T5|2006-03-01|INTERNAL COMBUSTION MOTOR WITH FLUID COOLING SYSTEM.
    CN208221247U|2018-12-11|A kind of cooling device for numerically-controlled machine tool hydraulic oil
    KR102015999B1|2019-08-29|Liquid-cooled cooling device with channel
    KR100980955B1|2010-09-07|barrier structure of water jacket in engine
    JP5664433B2|2015-02-04|Heat exchanger
    CN109560668A|2019-04-02|A kind of fluid-cooled electrical machine shell and fluid-cooled electrical machine
    JP2012092751A|2012-05-17|Engine cooling system
    JP2012244659A|2012-12-10|Stator structure of rotary electric machine
    CN212407152U|2021-01-26|Compact energy-saving servo power unit
    JP7014777B2|2022-02-01|Electrical hydraulic compact unit with tank and tank
    KR101318631B1|2013-10-16|Oilcooler
    JP2019534426A|2019-11-28|Electrohydraulic compact unit with tank and tank
    WO2021243720A1|2021-12-09|Expandable kettle, vehicle cooling system, and vehicle
    JP2009173315A|2009-08-06|Liquid level position adjusting device
    ES2704523T3|2019-03-18|Production of energy in a structure subjected to waves
    JP2016149457A|2016-08-18|Cooling device
    GB2598172A|2022-02-23|Near isothermal machine
    同族专利:
    公开号 | 公开日
    EP2577069A2|2013-04-10|
    WO2011149949A2|2011-12-01|
    EP2577069A4|2014-05-14|
    RU2565120C2|2015-10-20|
    CN102985701B|2016-01-27|
    US8491707B2|2013-07-23|
    US20110284089A1|2011-11-24|
    RU2012155850A|2014-06-27|
    EP2577069B1|2017-09-13|
    WO2011149949A3|2012-03-22|
    BR112012029936A2|2016-09-06|
    EP3263912B1|2020-01-29|
    EP3263912A1|2018-01-03|
    CN102985701A|2013-03-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1236931A|1967-07-19|1971-06-23|Bolton Mining Eng|Combined settling and flotation tank|
    DE2457956A1|1974-12-07|1976-06-10|Eglinski Geraetetechnik Kg|CALMING DEVICE FOR FLUID RESERVOIR|
    US4210176A|1978-09-14|1980-07-01|J. I. Case Company|Hydraulic liquid reservoir with internal baffle|
    DE3643265C2|1986-12-18|1990-01-04|Man Nutzfahrzeuge Ag, 8000 Muenchen, De|
    SE460985B|1988-03-08|1989-12-11|Karl Erik Mattsson|SETTING TO REDUCE PRESSURE CASE DURING FLUID PASSAGE AND RESERVE TO HYDRAULIC SYSTEM FOR CIRCULATION OF A FLUID|
    SU1733718A1|1990-06-07|1992-05-15|Красноярский Политехнический Институт|Hydraulic tank|
    JPH05321902A|1992-05-15|1993-12-07|Hitachi Constr Mach Co Ltd|Hydraulic operating fluid tank|
    RU2104740C1|1994-07-18|1998-02-20|Ковровский технологический институт|Device for degassing of hydraulic system liquid|
    JP4128085B2|2002-05-22|2008-07-30|株式会社小松製作所|Liquid tank|
    CN100453139C|2002-05-22|2009-01-21|株式会社小松制作所|Fluid tank|
    JP2004011873A|2002-06-11|2004-01-15|Komatsu Ltd|Liquid tank|
    RU2271501C2|2004-03-29|2006-03-10|Общество с ограниченной ответственностью "Научно-производственная фирма "Сфера"|Heating plant|
    WO2006048976A1|2004-11-04|2006-05-11|Komatsu Ltd.|Hydraulic tank|
    CN101400898A|2006-03-13|2009-04-01|株式会社小松制作所|Liquid tank|
    US20080173362A1|2007-01-19|2008-07-24|Wong Albert C|Hydraulic reservoir with baffle|US20130074798A1|2011-09-28|2013-03-28|Caterpillar Inc.|Tray for oil pan|
    US8960227B2|2012-03-16|2015-02-24|Caterpillar Sarl|Hydraulic fluid tank|
    US9744490B1|2012-04-06|2017-08-29|Enertechnix, Inc.|Trapped vortex particle-to-vapor converter|
    DE102012017836A1|2012-09-10|2014-03-13|Trw Automotive Gmbh|Fluid container, in particular hydraulic tank for a motor-pump unit|
    CN102840186B|2012-09-20|2015-12-02|奇瑞汽车股份有限公司|Liquid container|
    US9611869B2|2013-07-17|2017-04-04|Gardner Denver, Inc.|Slim mobile hydraulic fluid cooling assembly|
    WO2015077765A1|2013-11-25|2015-05-28|Hibben Charles W|Destabilization of liquids on liquid impregnated surfaces|
    CN103821780B|2014-03-12|2016-08-17|石河子开发区合创农机装备有限公司|A kind of hydraulic oil container|
    CN104196774B|2014-09-03|2016-05-04|西山煤电有限责任公司|Integrated hydraulic fuel tank|
    US10086314B2|2015-03-19|2018-10-02|Helgesen Industries, Inc.|Fluid storage reservoir with flow dynamic fluid management and hydronucleation|
    CN105257607B|2015-10-20|2017-10-03|广西柳工机械股份有限公司|Hydraulic oil container|
    SE541197C2|2015-11-13|2019-04-30|Lapplands Teknik Ab|Venting device at a reservoir for a hydraulic system|
    CN105854355A|2016-05-10|2016-08-17|武汉工程大学|Exogenetic force link gas-liquid separation device|
    CN108591185A|2018-03-29|2018-09-28|新兴能源装备股份有限公司|A kind of CNG hydraulic substations hydraulic oil reduction air bubble apparatus|
    CN109026859A|2018-07-20|2018-12-18|首钢集团有限公司|A kind of cold rolling simulator hydraulic oil container|
    DE102019103508A1|2019-02-12|2020-08-13|Fsp Fluid Systems Partners Holding Ag|Separator element, separator device, filter element, filter housing, filter device and method for separating gas bubbles from a liquid|
    EP3865715A1|2020-02-13|2021-08-18|Robert Bosch GmbH|Tank for a modular hydraulic power unit and modular hydraulic power unit comprising the same|
    法律状态:
    2018-03-20| B25C| Requirement related to requested transfer of rights|Owner name: HELGESEN DESIGN SERVICES, LLC (US) Free format text: A FIM DE ATENDER A TRANSFERENCIA, REQUERIDA ATRAVES DA PETICAO NO 860150095504 DE 18/05/2015, E NECESSARIO COMPLEMENTAR O VALOR DA GUIA DE RECOLHIMENTO, VISTO QUE TRATA-SE DE UMA TRANSFERENCIA DE TITULAR E NAO DE UMA ALTERACAO DE NOME. ALEM DISSO, E PRECISO APRESENTAR A TRADUCAO JURAMENTADA DO DOCUMENTO E A GUIA DE CUMPRIMENTO DE EXIGENCIA. Owner name: HELGESEN DESIGN SERVICES, LLC (US) |
    2018-07-17| B25A| Requested transfer of rights approved|Owner name: HELGESEN INDUSTRIES, INC. (US) |
    2018-07-31| B25E| Requested change of name of applicant rejected|Owner name: HELGESEN INDUSTRIES, INC. (US) |
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-06-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-01-12| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-09| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 24/05/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US34767810P| true| 2010-05-24|2010-05-24|
    US61/347,678|2010-05-24|
    US13/113,661|US8491707B2|2010-05-24|2011-05-23|Fluid storage tank configured to remove entrained air from fluid|
    US13/113,661|2011-05-23|
    PCT/US2011/037757|WO2011149949A2|2010-05-24|2011-05-24|Fluid storage tank configured to remove entrained air from fluid|
    [返回顶部]