• 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:
    13 ABSTRACT Herein a milk cooling tank (2) arranged to store milk at an animal milking site is disclosed.The milk cooling tank (2) comprises: a tank housing (4) provided with a milk storage space(18), a milk passage opening (20) in the tank housing (4) enabling passing of milk into andout of the milk storage space (18), and an evaporator (8). The milk cooling tank (2) comprises a cooling liquid passage (10) separate from the milk storage space ( 18). The cooling liquid passage (10) extends in thermal contact along a portion of the evaporator (8). Further, a method of cooling milk in connection with a milk cooling tank (2) is disclosed. Elected for publication: Fig. 2
    公开号:SE1351183A1
    申请号:SE1351183
    申请日:2013-10-07
    公开日:2015-04-08
    发明作者:Willem Alberts
    申请人:Delaval Holding Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The present invention relates to a milk cooling tank for storing milk at a milking plant for animals. The invention also relates to a milk cooling method in connection with such a milk cooling tank, BACKGROUND In milking systems, animals must be allowed to cool the milk for a certain time before the buttermilk is collected and transported to a dairy. Cooling the milk is necessary so that the milk quality is not increased. In a milk cooling tank at a milking parlor for animals, milk is stored at approximately 4 degrees Celsius.
    In milking parlors, animals where at least one automatic milking station is used may have the fully automatic milking of dairy animals continuously flatten milk or flow milk intermittently with relatively short time intervals between milkings into a milk cooling tank. This meant that each milk from the automatic milking station was continuously supplied to the milk cooling tank, at least for certain periods during a day. The continuous supply of each milk means that the dot may be black to maintain a low temperature in the inlet of the milk cooling tank.
    This can cause bacterial growth problems for milk cooling tanks where the time during taming is in the 72-hour interval '.
    In order to avoid or at least reduce the bacterial growth, a so-called instant cooler, a heat exchanger such as a plate heat exchanger can be arranged in connection with the milk line leading from the milk station to the milk cooling tank to cool the milk with cold tap water. Thus, the milk which is supplied to the inlet of the milk cooling tank is already cooled to a lesser or lesser extent.
    There is a need for improved milk storage where bacterial growth can be reduced.
    SUMMARY It is an object of the present invention to provide a milk cooling tank which is flexible and which can be used for more functions.
    According to one aspect of the invention, there is provided the object of having a milk cooling tank for storing milk connected to a milking plant for animals, the milk cooling tank comprising: a tank container provided with a milk storage space, 2 a milk passage opening the tank container which allows milk passage in and out of a storage compartment. Use a coolant therein for the purpose of cooling the milk and milk storage equipment. The Niljoik cooling tank comprises a cooling water passage separate from the milk storage space which extends in thermal contact along a part of the free ranger and which is adapted to receive a cooling water which is cooled by the cooling medium.
    As the milk cooling tank comprises a cooling water passage which extends in thermal contact along a part of the passenger compartment, a cooling water can be produced in the cooling water passage ready to be used for cooling equipment outside the milk storage space. In this way the above-mentioned spirit is obtained.
    The inventor here realized that the evaporator of the milk tank can be used for cooling cooling water used in equipment other than the milk cooling tank itself. In particular, the cooling liquid can be used in heat exchangers for cooling milk which is to be supplied to the storage space of the milk cooling tank.
    Harigenorn, bacterial growth in the milk cooling tank can be reduced.
    The milk cooling tank can be adapted to use milking systems for animals which comprise one or more automatic milking machines for fully automated milking of dairy animals. If milked, the milk cooling tank can be adapted to have a continuous milk flow without defining an intermittent milk flow. Habitual milking can create a separate milk flow to the milk cooling tank. In the case of intermittent milk flow, the interval between two milkings can be in the range of seconds up to about one hour during daytime. and the number of automatic milking machines. Under the flat, the interval between two milkings can increase to flora hours. The coal cooling tank can be adapted for emptying at 48-hour intervals, preferably up to 72-hour intervals.
    The fact that the coolant passage is separate from the milk storage space meant that the coolant passage defines a space separate from the milk storage space. Dot wants to say that the liquid in the kyivatske passage will not be mixed with the liquid in the oil storage space.
    The collective cooling tank can be placed in a room separate from the animals in an animal holding area and separated from a milking area comprising a milking machine. The animal holding area can preferably be a barn or a grazing area. At least one milk line from the automatic milk feeding machine can lead to an inlet having the milk cooling tank. 3 A tank cleaning machine for automatic cleaning of the milk cooling tank can be arranged connected to the milk cooling tank. After emptying the milk cooling tank, the milk cleaning machine is started and milk Iran the milking machine is not allowed into the milk cooling tank until the cleaning is completed.
    According to embodiments, the coolant passage may comprise a first connecting end and a second connecting end arranged accessible to the outside of the tank tank and may be adaptable to be connected to equipment to be cooled by a coolant cooled coolant passage. In this way, equipment that utilizes a cooling water can be farmed with the cooling water Iran milk cooling tank. Each of the first and second connecting ends may be provided with a connecting device such as a ganged rorancle or a valve, but may also consist only of a rudder to which rudder a connecting rudder may be welded, charged or crimped.
    According to forms of drying, the evaporator can form a part of a delimiting surface has the milk storage space of the tank container and the cooling water passage can be arranged connected to a surface has the faranger where the evaporator is not in contact with milk. Alternatively, the faranger may form part of a delimiting surface of the milk storage space the tank container and the coolant passage may be arranged on the side of the faranger which is in contact with the milk.
    According to embodiments, the milk cooling tank may comprise a milk connection connected to the milk passage opening, the pipe connection comprises a milk inlet for connection to a milk machine has the milking system for animals and a milk outlet adapted to be temporarily connected to a milk collection device when the milk collection tank is to be milked.
    The raranutning can form a heat exchanger which comprises a milk channel and a cooling water channel. The coolant passage may be connected to the coolant channel. On this sail, a heat exchanger can be integrated with the milk inlet having the milk cooling tank and the milk flowing into the milk cooling tank can be cooled in contact with it entering the milk cooling tank.
    As a result, bacterial growth can be reduced.
    According to embodiments, the cooling water passage may comprise a cooling water conductor wound around a rudder body having the rudder connection.
    According to further embodiments, the cooling water channel can be formed between a rudder body having the rudder connection and a cradle element connected to the rudder body. According to embodiments, the cooling tank may comprise a circulation pump connected to the cooling water passage and the cooling water channel. In this way, coolant water circulates between the coolant passage in thermal contact with the passenger and the coolant channel for all cooling milk in the tube connection of the pipe connection.
    It is a further object of the present invention to provide an alternative milk cooling method in connection with a milk cooling tank.
    According to one aspect of the invention, there is further provided the object of a milk cooling method in connection with a milk cooling tank arranged to store milk in a milking parlor for animals. The milk cooling tank comprises: a tank container with a milk storage space and a milk passage opening in the tank container, a passenger compartment, a coolant passage separate from the milk storage compartment, the coolant passage extends thermal contact with some of the passenger and a pipe connection connected to the milk connection. The pipe connection comprises a milk inlet connected to a milking machine at the milking installation for animals and a milk outlet adapted to be temporarily connected to a milk collecting device when the milk cooling tank is to be emptied. The rudder connection Wider a heat vaporizer that includes a soft channel and a cooling channel channel. The milk cooling tank also comprises a circulation spur connected to the coolant passage and the coolant channel. The method comprises: evaporation of a coolant in the evaporator to cool cooling milk in milk storage spaces and to cool a cooling liquid in the cooling water passage and circulation of cooling water through the cooling water passage and the cooling water channel with the circulation pump.
    After cooling, the cooling water passage which is in thermal contact with the evaporator is cooled and circulated through the cooling water passage and the cooling water channel of the rudder connection of the milk cooling tank cools the milk entering the rudder connection In connection with the milk entering the milk cooling tank. Thereby the oyan named andamalet is obtained. Bacterial growth in the milk cooling tank can be reduced.
    Additional features and advantages of the present invention will become apparent upon study of the present claims and the following detailed description.
    BRIEF DESCRIPTION OF THE DRAWINGS Various aspects of the invention, including its particular features and advantages, will be readily apparent from exemplary embodiments discussed in the following detailed description and the accompanying drawings, in which: Fig. 1 illustrates a milk cooling tank according to embodiments; Fig. 2 illustrates a cross section through milk cooling tanks according to embodiments, Figs. 3 and 4 illustrate a cross section through a part of milk cooling tanks according to embodiments and Fig. 5 illustrates a milk cooling method in connection with a milk cooling tank.
    DETAILED DESCRIPTION Aspects of the present invention will now be described more fully. Equal numbers refer to equal elements all the time. Selection kanda functions and constructions will not necessarily be described in detail for brevity and / or clarity.
    Fig. 1 illustrates a milk cooling tank 2 according to embodiments. The milk cooling tank 2 is arranged to store milk on a milking device for animals. The milk cooling tank 2 comprises a tank container 4 arranged with a milk storage space. A milk passage opening is provided in the tank container 4 which allows the passage of milk into and out of the milk storage space. A rO connection 6 is connected to the meikass passage opening. The milk cooling tank 2 comprises a farangare 8 adapted to evaporate a coolant in the same vessel to cool the milk milk storage space. A cooling circuit is formed by the evaporator 8 and a grain compressor, condenser and expansion device (not shown) is placed on the edge.
    The milk storage space is delimited by the tank container 4 and the evaporator 8. In Fig. 1 her dear has been omitted by the tank container 4 to show a side has the passenger which is not in contact with milk. The milk cooling tank 2 comprises a cooling liquid passage 10 separately from the milk storage space. The coolant passage 10 stacks In thermal contact along a part of the evaporator 8. The coolant passage 10 should be adapted to receive a cooling liquid which is cooled by the cooling medium in the evaporator & Harigenorn, a cooling vessel can be cooled in the cooling water passage.
    In these embodiments, the coolant is used in an external heat exchanger 12 to cool iron which flattens from a closed unit 14 has an automatic milking machine 16 to the milk cooling tank 2. The automatic milking machine 16 is connected to the furnace connection 6. The cooling liquid is circulated through the cooling water passage 10 and the external The milk from the automatic milking machine 16 is cooled by the coolant and the coolant is warned by the milk 6 the external heat exchanger 12. The heated coolant is cooled in the coolant passage 10 by the coolant evaporated on the evaporator 8.
    The milk cooling tank 2 toms in regular intervals. A milk collection device such as a milk collection tank of a truck from a dairy is connected to the pig connection 6 and the milk is transferred from the milk cooling tank 2 to the injection collection device.
    As mentioned above, the farange 8 forms a part of a delimiting surface of the milk storage space in the tank container 4. In these embodiments, the cooling water passage is arranged at the side of the evaporator which is not in contact with the milk.
    Fig. 2 illustrates a cross section through a milk cooling tank 2 according to embodiments. As above, the milk cooling tank 2 comprises a tank container 4 arranged with a milk storage space 18. A milk passage opening 20 is arranged the tank container 4. A drawer connection 6 is connected to the milk container 4 and the milk passage opening 20. The pipe connection 6 is adapted for connection to a milk machine and empties the milk tank 2. The milk cooling tank 2 comprises an evaporator 8. The milk cooling tank 2 has an oval cross-section seen perpendicular to the cross-section shown in Fig. 2 and the evaporator 8 extends along a lower part of the milk storage space 18. Lip to a level indicated by a dashed line 19.
    The milk cooling tank 2 comprises a coolant passage 10 separate Iran the milk storage space 18. The cooling water passage 10 extends in thermal contact along a part of the evaporator 8. As above, the cooling water passage 10 is adapted to receive a cooling liquid cooled by the coolant in the evaporator 8. The evaporator 8 forms part of a delimiting surface of the milk storage space 18 in the milk container 4. The coolant passage 10 is arranged on the side of the evaporator 8 which is in contact with milk. An agitator 21 for agitating the milk milk storage space 18 is provided to prevent milk Iran from freezing on the surface of the evaporator 8 in the milk storage space 18.
    The coolant passage 10 comprises a first connection end 22 and a second connection end 24 accessible from the outside of the tank container 4. The first and second connection ends 22, 24 are adapted to be connected to equipment to be cooled with a coolant to be cooled the coolant passage 10. The equipment to be cooled may e.g. be an external heat exchanger discussed in connection with Fig. 1 or a heat exchanger in connection with the rudder connection 6 discussed below with reference to embodiments Asada in Figures 3 or 4. Fig. 3 illustrates a cross section through a part of a public cooling tank 2 according to embodiments. The milk cooling tank 2 can be a milk cooling tank discussed in connection with Figs. 1 and Fig. 2. The milk cooling tank 2 comprises a rudder connection 6 connected to a milk passage opening 20. The illustrated rudder connection 6 is a T-rudder connection. The milking passage opening 20 is arranged in a tank container 4 has the milk cooling tank 2. The rudder connection 6 comprises a milking connection 26 for connection to a milking machine has a milking device for animals as an automatic milking machine discussed In connection with Fig. I. The rudder connection 6 further comprises a milk outlet 28 adapted connected to a milk collecting device when the milk cooling tank is to be emptied. The milk collection device may be a milk collection tank of a truck. A load-removable lid 30 is provided to close the milk outlet 28. A surface weak for milk which flattens into the milk cooling tank 2 Or indicated by wide arrows. A flocculant gets milk that flattens out of the milk cooling tank 2 Or indicated by dashed, wide arrows.
    The rudder connection 6 forms a heat exchanger comprising a milk channel 32 and a cooling water channel 34. The cooling water channel 34 is formed between a rudder body 36 has the ridge connection 6 and a cradle element 38 connected to the rudder body 36. The cooling water channel 34 extends around parts of the rudder body 36. rudder body 36. Connecting tubes 40, 42 Or arranged to connect the cooling water channel to a cooling water boiler. Incidentally, the cooling water cooler is a cooling water passage 10 as discussed above in connection with Fig. 1 or Fig. 2. Arrows indicate the path of the cooling water genor cooling water channel 34.
    The milk cooling tank 2 comprises a circulation pump 43 connected to the cooling water passage 10 and the cooling water channel 34. Cooling water is circulated between the cooling water passage 10 in thermal contact with the evaporator 8 of the milk cooling tank and the cooling water channel 34 to cool the milk milk channel 32 of the circulation connection 6 with a circulation pump 43.
    A control circuit 80 or arranged may control the circulation pump 43. The first temperature sensor 82 abuts the rudder body 36 having the rudder connection 6. A second temperature sensor 84 or arranged the cooling water channel 34. A control unit 86 Or connected to the first and second temperature sensors 82, 84 and the circulation pump 43 The control unit 86 is adapted to control the circulation pump 43 and is allowed to use one or both of the first and second temperature sensors 82, 84. Among other things, the control unit 86 is adapted to prevent freezing temperatures in the milk duct 32. Fig. 4 illustrates a cross section through a part of milk cooling tank 2 according to embodiments. The embodiments in Fig. 4 are of the same type as those in Fig. 3. As before, the pipe connection 6 provides a heat exchanger comprising a milk duct 32 and a cooling water channel 34. Only the main differences between the embodiments in Fig. 3 and Fig. 4 will be discussed. following.
    The cooling water channel 34 comprises a cooling water pipe 44 wound around a tubular body 36 having the pipe connection 6. As above, the connecting pipes 40, 42 are arranged for connection of the cooling water channel 34 to a cooling water cooler as a cooling water passage discussed above in connection with Fig. 1, Fig, 2 or Figs. 3. Again, arrows indicate the carriage of coolant through the coolant channel 34.
    Iva valves arranged in the rudder connection 6 are also illustrated in these embodiments. An outlet valve 46 is provided at the milk outlet 28 and a service valve 48 is provided at the milk passage opening 20. The outlet valve 46 is arranged to ensure that the lid 30 is removed from the milk connection 6 when the milk cooling tank is to be emptied. The outlet valve 46 is opened into the milk collection device here connected to the milk outlet 8 having the pipe connection 6. The service valve 48 is arranged to close the milk passage opening 20, for example if accessible bar is obtained to the inside of the milk connection 6 or when the milk inlet 26 is mostly ripped or removed. field with milk.
    Fig. 5 illustrates a milk cooling method in connection with a milk cooling tank arranged to store milk at a milking plant for animals. The milk cooling tank is suitably a milk cooling tank 2 according to the aspects or embodiment discussed, comprising an evaporator, a milk storage space, a cooling water passage sorn stacker sly in thermal contact along a part of the evaporator, a pipe connection forming a heat exchanger and a cooling medium. The method comprises: evaporating 100 of a coolant in the evaporator to cool milk in the milk storage space and allowing a coolant to cool in the coolant passage and circulating 102 of a coolant through the coolant passage and the cooling water channel down the circulation pump.
    According to embodiments, the method may comprise: stopping the circulation 102 when the temperature of the pipe connection falls below a first threshold temperature value. The dot threshold threshold temperature may be, for example, 05 ° C, 100 or 2 ° C. On a sedentary sail, freezing of milk in the pipe connection can be avoided. The first 9 threshold temperature values can be obtained with a temperature sensor which rests against the wire connection. The temperature sensor is connected to a control circuit near the circulation pump.
    According to embodiments, the method may comprise: Stopping the circulation 102 when the temperature of the culvert is below a second threshold temperature value The second threshold temperature value may be, for example, 0 ° C, 1 ° C or 2 ° C. In this way, freezing of milk can be avoided in the pipe connection. The second threshold temperature value can be fed with a temperature sensor arranged at or in the cooling water channel. The temperature series is connected to a control circuit for the circulation pump.
    This invention is not to be construed as limited to the embodiments set forth herein. One skilled in the art will recognize all of the various features that the embodiments shown herein may be combined to create additional embodiments of those described without departing from the scope of the present invention as defined in the present claims. In addition, those skilled in the art will recognize that the coolant passage WHICH extends in thermal contact along a portion of the passenger can = fall off a rudder or may be formed between a weighing element and the evaporator. The coolant can be water that contains glycol to avoid freezing the water. An appropriate amount of coolant circulating in the coolant passage 10 and coolant channel 34 can be about 10-20 liters each. An appropriate volume of the coolant passage 10 in thermal contact lamed a portion of the passenger compartment 8 may be about 7-15 liters. The milk cooling tank 2 can have a volume of 6000 liters per automatic milking machine which supplies milk to the milk cooling tank 2. Such a volume can reach a 72-hour flow range of the milk cooling tank 2.
    Also the invention has been described herein with respect to exemplary embodiments of many similar alternatives, modifications obvious to those skilled in the art. Therefore, it is apparent that the foregoing illustrates similar exemplary embodiments and that the invention is defined only in the present claims.
    The term "comprising" or "comprising" as used herein is not limiting and includes one or more features, elements, steps, components or functions but does not exclude the presence or further addition of one or more features, elements, steps, grain components, functions or groups thereof. ,
    权利要求:
    Claims (11)
    [1] 1. A milk cooling tank (2) arranged to store milk at an animal milking site, the milk coolingtank (2) comprising: a tank housing (4) provided with a milk storage space (18), a milk passage opening (20) in the tank housing (4) enabling passing of milk into and out ofthe milk storage space (18), and an evaporator (8) adapted to evaporate therein a refrigerant in order to cool milk in the milkstorage space (18), characterised in that the milk cooling tank (2) comprises a cooling liquid passage (10)separate from the milk storage space (18), the cooling liquid passage (10) extending inthermal contact along a portion of the evaporator (8) and being adapted to receive a cooling liquid to be cooled by the refrigerant.
    [2] 2. The milk cooling tank (2) according to claim 1, wherein the cooling liquid passage (10)comprises a first connection point (22) and a second connection point (24) arrangedaccessible from an outer side of the tank housing (4) and adapted to be connected to equipment to be cooled by a cooling liquid cooled in the cooling liquid passage (10).
    [3] 3. The milk cooling tank (2) according to claim 1 or 2, wherein the evaporator (8) forms partof a delimiting surface of the milk storage space (18) in the tank housing (4), and wherein the cooling liquid passage ( 10) is arranged on a non-milk contacting side of the evaporator (8).
    [4] 4. The milk cooling tank (2) according to claim 1 or 2, wherein the evaporator (8) forms partof a delimiting surface of the milk storage space (18) in the tank housing (4), and wherein the cooling liquid passage (10) is arranged on a milk contacting side of the evaporator (8).
    [5] 5. The milk cooling tank (2) according to any one of the preceding claims, comprising a pipeconnector (6) connected to the milk passage opening (20), the pipe connector (6) comprisinga milk inlet (26) for connection to a milking machine of the animal milking site and a milkoutlet (28) adapted to be temporarily connected to a milk collection device when the milkcooling tank (2) is to be emptied, wherein the pipe connector (6) forms a heat exchangercomprising a milk channel (32) and a cooling liquid channel (34), and wherein the cooling liquid passage (10) is connected to the cooling liquid channel (34).
    [6] 6. The milk cooling tank (2) according to claim 5, wherein the cooling liquid channel (34) comprises a cooling liquid pipe (44) wound about a pipe body (36) of the pipe connector (6). 12
    [7] 7. The milk cooling tank (2) according to claim 5, wherein the cooling liquid channel (34) isformed between a pipe body (36) of the pipe connector (6) and a wall element (38) attached to the pipe body (36).
    [8] 8. The milk cooling tank (2) according to any one of claims 5 - 7, comprisíng a circulation pump (43) connected to the cooling liquid passage (10) and the cooling liquid channel (34).
    [9] 9. A method of cooling milk in connection with a milk cooling tank (2) arranged to store milkat an animal milking site, the milk cooling tank (2) comprisíng: a tank housing (4) provided with a milk storage space (18) and a milk passage opening (20)in the tank housing (4), an evaporator (8), a cooling liquid passage (10) separate from themilk storage space (18), the cooling liquid passage (10) extending in thermal contact along aportion of the evaporator (8), and a pipe connector (6) being connected to the milk passageopening (20), the pipe connector (6) comprisíng a milk inlet for connection to a milkingmachine of the animal milking site and a milk outlet adapted to be temporarily connected to amilk collection device when the milk cooling tank (2) is to be emptied, wherein the pipeconnector (6) forms a heat exchanger comprisíng a milk channel (32) and a cooling liquidchannel (34), the milk cooling tank (2) further comprisíng a circulation pump (43) connectedto the cooling liquid passage (10) and the cooling liquid channel (34), wherein the methodcomprises: - evaporating (100) a refrigerant in the evaporator (8) to cool milk in the milk storage space(18) and to cool a cooling liquid in the cooling liquid passage (10), and - circulating (102) with the circulation pump (43) a cooling liquid through the cooling liquid passage (10) and the cooling liquid channel (34).
    [10] 10. The method according to claim 9, comprisíng:- stopping (104) the circulating (102) when a temperature of the pipe connector (6) falls below a first threshold temperature value.
    [11] 11. The method according to claim 9 or 10, comprisíng:- stopping (106) the circulating (102) while a temperature of the cooling liquid is below a second threshold temperature value.
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    同族专利:
    公开号 | 公开日
    SE537535C2|2015-06-02|
    WO2015053692A1|2015-04-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2417260A1|1978-02-17|1979-09-14|Cleren Sa|Refrigerated reception and storage of milk - allows precooled chilled water to be diverted via storage tank base|
    SU1644838A1|1988-11-17|1991-04-30|Всесоюзный Научно-Исследовательский Институт Комплексных Проблем Машиностроения Для Животноводства И Кормопроизводства|Milk cooling tank|
    SE0000362D0|2000-02-04|2000-02-04|Alfa Laval Agri Ab|Method and system for controlled cooling of small milk quantities|
    SE523119C2|2001-03-20|2004-03-30|Delaval Holding Ab|Method and apparatus for cooling milk in an automatic milking system|
    GB201022113D0|2010-12-30|2011-02-02|Delaval Internat Ab|Bulk fluid refrigeration and heating|
    RU118167U1|2012-02-29|2012-07-20|Лазарь Ефимович Бродский|BRODSKY MILK COOLER|WO2021262075A1|2020-06-25|2021-12-30|Delaval Holding Ab|Milk storage tank|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351183A|SE537535C2|2013-10-07|2013-10-07|Milk cooling tank and Milk cooling method|SE1351183A| SE537535C2|2013-10-07|2013-10-07|Milk cooling tank and Milk cooling method|
    PCT/SE2014/051159| WO2015053692A1|2013-10-07|2014-10-06|Milk cooling tank and method of cooling milk|
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