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    • 专利摘要:
    In an expansion and degassing device for connection to a circulation system for a circulating liquid, an expansion and degassing tank (1) is provided, cf. DE 103 29 740 A1 or CH 694 895 A5. Since the amount of circulating fluid in the circulation system is constantly changing during operation, if necessary, the expansion and degassing tank (1) liquid is removed via a pressure-holding pump (13) or fed via a feed line (23). With the application, it is proposed to carry out the supply line (23) as a closed line (23) for supplying the topping liquid, at the beginning of which a system separator (24) is arranged and which in its end area (23a) is pressure-tight through the container lid (3). of the expansion and degassing tank (1) is passed. The valve of the supply line (23) is controlled level-dependent. As a device for reducing a negative pressure of undesirable size, a pressure cell (19) is provided, which controls the valve additionally pressure-dependent. It is thus achieved that neither the supply of the topping liquid nor the occurrence of a marginal negative pressure in the expansion and degassing tank (1), the fresh refilling liquid is contaminated by repelling container liquid or oxygen from the ambient air can be absorbed by the liquids.
    公开号:AT13199U1
    申请号:TGM50067/2012U
    申请日:2012-07-20
    公开日:2013-08-15
    发明作者:Hans-Friedrich Dipl Ing Bernstein
    申请人:Hans-Friedrich Dipl Ing Bernstein；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13199U1 2013-08-15
    The invention relates to an expansion and degassing device for connection to a circulatory system in which a circulating liquid is circulated and thereby undergoes pressure and volume changes, according to the preamble of claim 1. Such a device is known from the Swiss patent CH 694 895 A5 known.
    As circulatory systems that come into question for expansion and degassing of the type referred to here, in CH 694 895 A5, a refrigeration cycle system and a heating circuit are specified. In these cases, the circulating fluid also undergoes temperature changes. By heating and cooling of the circulating liquid during operation, but possibly also by switching on and off of individual consumers, which are charged by the circulating liquid, the pressure and volume of the circulating liquid change continuously during operation. It must therefore be deducted or refilled constantly volume fractions of the circulating liquid, and it must be maintained the required optimum operating pressure. For this purpose, the known expansion and degassing device has a basically closed and rigid expansion and degassing, which serves as a temporary storage and receiving or dispensing varying amounts of the circulating liquid. The expansion and degassing tank is used in addition to such functions as pressure maintenance in the system, degassing of the circulating liquid, replenishment of replenishment liquid and as sedimentation tanks for salts and minerals. For all these functions, contact with the atmospheric oxygen in the air should be avoided if possible, as this leads to corrosion of the entire system.
    The connection between the circulation system and the expansion and degassing is made by a bypass or parallel line in the partial flow, which line in CH 694 895 A5 as "circulation line". is designated. It connects the supply line of the circulation system with the return line, so that in the bypass or circulation line also constantly circulating fluid flows in the circuit.
    At a first connection point of the bypass or circulation line, a container feed line is connected via an overflow valve, which leads into the interior of the expansion and degassing. Downstream of this first connection point, the bypass or circulation line has a second connection point, into which the pressure port of a pressure-holding pump opens. The suction line of the pressure holding pump also extends into the interior of the expansion and degassing tank. In this way, the interior of the expansion and degassing tank is connected via the pressure-holding pump to a first location and via the overflow valve to a second location of the circulation fluid circulated in the circulation system. Excessive amounts of the circulating liquid flow to the expansion and degassing through the overflow valve and the container inlet line to; If, in contrast, additional quantities of circulating liquid are required in the circulatory system for pressure maintenance, these are withdrawn from the expansion and degassing tank by the pressure-maintaining pump.
    This constant change leads in the principle closed expansion and degassing to pressure fluctuations, with predetermined positive and negative pressures to be achieved. Most often, the pressure inside the expansion and degassing tank is slightly reduced from the outside atmospheric pressure. The interior of the container can only communicate with the external atmosphere via pressure-limiting fittings. For this purpose, a ventilation and safety valve (gas outlet valve) is provided in accordance with CH 694 895 A5. When gases accumulate in the interior of the expansion and degassing tank and exert a certain pressure, the venting and safety valve opens and allows these gases to escape through a liquid reservoir into the atmosphere. In this way, neither the circulatory fluid of the circulatory system nor the fresh refill fluid with the gases to be discharged comes into undesirable contact. At the same time, the outflow of gases causes a pressure equalization and causes the venting valve to close again. It can therefore also flow at this point, no outside air in the expansion and degassing. The bleed and safety valve may be of simple mechanical design and control; if necessary, liquid components can also leave the container interior via this valve. The expansion and degassing tank can be filled with liquid up to the level of the vent and safety valve.
    When the liquid level in the interior of the expansion and degassing tank has dropped to a certain lower level, fresh filling liquid must be refilled. For this purpose, it is provided in accordance with CH 694 895 A5 that the control electronics open the solenoid valve of a supply line when a lower level switch responds. This ends with free discharge via a float chamber which is arranged on the container lid of the expansion and degassing container. The refill liquid thus flows as a free jet into the float chamber, can degas into the ambient air and accumulates in the float chamber up to a certain height at which the float control responds and the refill liquid down in the expansion and Drain degassing into it. The interruption of the supply line through a path with a free jet also serves the purpose of preventing a backflow of liquid container in the feed line of the filling liquid. However, the outflow of the filling liquid in the free jet has the disadvantage that oxygen can be taken up from the atmosphere. Another disadvantage of the known embodiment results from the float control, because on the controlled by the float valve also air can get into the filling liquid. This is especially the case when the movable valve body, usually a valve disc, lifts off its seat or is lifted off.
    According to the CH 694 895 A5 precautions are also taken to the effect that an unacceptably large negative pressure occurs in the expansion and degassing. Then, in extreme cases, the container could implode. Therefore, according to CH 694 895 A5, a so-called vacuum breaker is arranged on the container lid of the expansion and degassing container, ie a valve which establishes a connection to the outside atmosphere when a limit value for an inadmissibly high negative pressure is reached. Although the vacuum breaker with its inflow opening is again inside a wet cell; this does not change the fact that when activating the vacuum breaker air enters the interior of the expansion and degassing tank. According to the CH 694 895 A5 this should be tolerated, because the vacuum breaker is intended only for exceptionally occurring incidents.
    Also known are expansion and degassing, working with pressure-holding pumps and in which the closed expansion and degassing is provided with a membrane. The membrane divides the interior of the container into a gas space and a liquid space. For example, the membrane may be formed in the manner of a sack containing the liquid and located within the expansion and degassing tank. Between the outside of the bag and the inner wall of the expansion and degassing container, a gap is formed, which receives a gas, which may be air. As the circulating liquid expands as the temperature increases, the bag forming the membrane with air absorbs the change in volume. In this way, the disadvantages are avoided, which are given by the pressure-limiting valves in the device with the rigid expansion and degassing according to CH 694 895 A5. However, the material of which the membranes are made also leads to problems. The membrane material may e.g. Rubber or butyl rubber. If these materials are constantly in contact with certain circulating fluids, such as heating water, with constant high deformation, material fatigue may result. Gases, including oxygen, can diffuse through the membrane into the circulating medium of the pipe network, which then again there is the risk of corrosion and siltation. Preventively, the pipe networks must be vented more often, which causes additional costs. Since the deformability of the membranes has its limits, also the pressure range between positive and negative, which can sweep an operating program, limited. 2/14 Austrian Patent Office AT 13 199 Ul 2013-08-15
    Finally, the membranes have to be replaced more often according to pressure vessel regulations, so that a perfect function is given. Because the temperatures let the plasticizer evaporate, and the rubber material becomes porous and decomposes.
    The invention is therefore an object of the invention to improve the expansion and degassing of the initially mentioned type with the aim that they in a simple and reliable functioning design over a relatively large pressure range between positive and negative pressure in the expansion and degassing can be operated, that the uptake of oxygen from the atmosphere is completely excluded in the container and that the backflow of liquid container in the topping liquid is certainly avoided (system separation).
    The solution of this object is achieved with the entirety of the features of claim 1.
    The spill valve is designed so that the medium to be degassed flows from the heating circuit in the degassing, in accordance with the desired in normal operation, adjustable at the overflow pressure in the container. This desired pressure is (for example only) 0.8 - 0.9 bar, for example, slightly below the external atmospheric pressure of 1 bar, the pressure difference at which the spill valve opens, according to the prevailing in the heating system at this point static pressure of (only Example) 2 bar is set. This proven feature is taken from the generic state of the art according to CH 694 895 A5.
    To completely eliminate the uptake of oxygen, two changes are made to the container as compared to the disclosure in CH 694 895 A5 (characterizing features a and b). First, the vacuum breaker, the purpose of which was to prevent excessive overpressure in the degassing vessel by supplying air (or generally by supplying gas), is omitted; its function is otherwise taken over, by the fresh water supply (feature b).
    The supply of fresh water was previously according to the disclosure in CH 694 895 A5 so that the fresh water valve, which in the local "open". Management of the fresh water recovery is only dependent on the level. The new supply of fresh water is now done so that the solenoid valve in a "closed". Supply line is located (characteristic a) and not only level-dependent, but also opens depending on pressure (characteristic b). In this way, it is possible to dispense with a vacuum breaker which allows either atmospheric air or inert gas (in any case a gaseous medium) to flow. An essential part of the invention is therefore that with the fresh water supply, a fluid or liquid medium is used instead of a gas to limit the negative pressure. Because the vacuum breaker is eliminated and because the fresh water supply line no longer has any connection to the atmosphere, the degassing tank is completely protected against the ingress of oxygen.
    As a result, the negative pressure in the expansion and degassing is limited by (i) the opening of the spill valve at a relatively low pressure relative to the atmosphere and (ii) by means of a novel vacuum gauge that can open the otherwise existing fresh water solenoid valve. In an earlier application according to DE 10 2010 047 514, the fresh water feed was carried out by the solenoid valve in a closed feed line, wherein the solenoid valve was controlled only level dependent. Instead of the "open" Vacuum breaker according to CH 694 895 A5 was used in DE 10 2010 047 514 a safety valve with a connected inert gas container. This also resulted in a solution which, in the special operating conditions of make-up and low-pressure limitation, has replaced the connections previously open to the atmosphere with closed connections. However, this "closed" Solution more complex than the present "closed" Solution. The invention has recognized that it is possible without a nitrogen supply.
    By this configuration of the expansion and degassing container, i. in this oxygen degassing, an oxygen content of less than 0.1 mg / l, typically 0.05 mg / l, is achieved in the circulating medium of the system. The oxygen input due to the virtually unavoidable leaks in the heating circuit and the oxygen contained in the equally unavoidable supply of fresh water are safely removed from the system by the degassing in the container before they can contribute to corrosion.
    By the filling liquid flows in the now closed supply line through the container lid into the interior of the closed and pressure-tight expansion and degassing, at this point any contact of the circulating liquid is excluded with the free atmosphere, and the degassing and descaling finds alone inside the container instead. The dreaded corrosion by the air-oxygen is thus prevented at this point.
    The system separator at the input of the supply line is constructed in accordance with the guidelines of DVGW and thus a reliable component. It prevents with certainty that backflowing liquid container is mixed with fresh filling liquid. Namely, when the pressure in the supply line behind the system separator increases compared to the pressure in the inlet port and exceeds a certain limit, closes the input side backflow preventer of the system separator and directs about trapped in the supply line container liquid through a secondary line to a collection point, e.g. to an overflow siphon.
    However, the entire advantageous effect of the expansion and degassing device according to the invention is also due to the fact that in the necessary function of vacuum breaking (ie the function of the negative pressure limitation in the container) any penetration of atmospheric air into the interior of the expansion and degassing is excluded. The limitation of the negative pressure is necessary to prevent boiling and evaporation of the container liquid and not to have to design the container too massive. If the pressure in the expansion and degassing tank becomes excessively strong, a liquid medium flows into the upper portion of the tank.
    Since there is depression, only a very small amount of gas is basically taken up by the container liquid. In addition, a pressure equalization takes place very quickly. Any excess gas leaves the expansion and degassing via the already mentioned in the prior art bleed and safety valve (gas release valve), as soon as the pressure in the expansion and degassing is high enough again.
    A major advantage of the expansion and degassing device according to the invention is that it works without membranes. This will once avoid the difficulties that are due to the wear-prone materials of the membranes. The expansion and degassing device according to the invention retains the proven pressure-tight and rigid expansion and degassing and works with proven fittings of basically simple mechanical function. On the other hand, this leads to the fact that the device according to the invention can be operated over a large pressure range between positive and negative pressure in the expansion and degassing container. The modular design of the device proposed by CH 694 895 A5 can be maintained.
    With the expansion and degassing device according to the invention, it is possible, all gases such. As hydrogen, nitrogen, oxygen, carbon disulfides and carbon dioxide expel from the circulating fluid. The result is an inert fluid in the heating circuit, wherein the pH increases in comparison to the refill liquid and the electrical conductance decreases. The pH should be 8.2 to 10.0 and the electrical conductivity should be less than 100 micro-Siemens per cm for a low-salt medium. This ensures that the corrosion by oxygen - at a concentration less than 0.1 mg / l - can be neglected.
    The pressure maintenance in the heating circuit also means a constant supersaturation of the circulating liquid, so that a receptiveness for substances exists and the pipes and walls of the plant are cleaned of substances cleaned.
    The degassing also provides an improvement in the heat transfer in the circulatory system, so that there is a saving of primary energy and thus less carbon dioxide is released.
    Furthermore, the extensive degassing of the water or medium also has the advantage that the expansion of the water under temperature influence is lower (comparable to mercury); This also reduces this pressure fluctuation to be compensated.
    Advantageous developments are listed in the subclaims; the claimed with them features are explained in more detail in the embodiment.
    The invention relates according to claim 7, the circulation system of a building heating, is promoted in the circulating water in the circulation and experiences pressure and volume changes, the invention in this application is that the building heating to treat the circulating water with an expansion - And degassing device according to at least one of claims 1 to 6 is provided. Claim 8 includes the corresponding training for a refrigeration cycle system.
    In the case of building heating, the refilling liquid consists of fresh water, and the circulating water is treated in a special way for the purpose of heating. The device according to the invention is particularly well suited for the purposes of building heating in the low temperature range and also in the field of cooling systems, because they work in temperature ranges in which the density of the water increases and its absorption capacity increases. But there are also numerous other applications such as refrigeration circuits into consideration.
    The invention will be explained in more detail with reference to an embodiment in three figures.
    Fig. 1 is a schematic representation of the expansion and degassing device according to the invention in the manner of a longitudinal section.
    FIG. 2 illustrates an enlarged detail of FIG. 1. FIG.
    Fig. 3 is a schematic similar to Fig. 1 with an associated electronic control section.
    In Fig. 1, reference numeral 1 denotes an expansion and degassing tank in its entirety. The container 1 consists of the container wall 2, which forms the cylindrical side wall and can be made of stainless steel. The container lid 3 and the container bottom 4 are also made of stainless steel and are detachably attached to the container wall 2. The container wall 2 can also be surrounded by a sheath 5 made of a reflective and insulating material. Details of this sheath 5 are described in the already mentioned CH 694 895 A5 or DE 103 29 740 A1. In the container bottom 4, a drain valve 6 is also attached. To control the liquid level in the expansion and degassing 1 a level indicator is present on this, which may consist of a water level glass 7. A float can 9 trigger specific switching and control functions by reaching an upper level switch 8 or a lower level switch. Furthermore, a closable inspection opening 10 is present, which is used in cleaning and repair work.
    Through the container lid 3, a suction pipe 11 is passed. It ends in the region of the lower third of the expansion and degassing tank 1 in a check valve 12. The check valve 12 ensures that during operation actually only liquid is sucked from the lower area; a backflow of liquid down into the container 1 but should be excluded. The suction line 11 leads to a pressure holding pump 13. The pressure-side outlet of the pressure-maintaining pump 13 opens into a circulation line (16, 17) which is connected to the circulation system of the entire system as a bypass or parallel line; Details of this can be found again in CH 694 895 A5 (see also FIG. 5, FIG. 4, Austrian Patent Office AT 13 199 Ul 2013-08-15, in particular FIG. Here, a supply line 16 of the expansion and degassing device is connected to the pressure line of the circulation system, while a return line 17 of the expansion and degassing device is connected to the return line of the circulatory system. The supply line 16 and the return line 17 thus together form the circulation line. The direction of flow in the lines 16 and 17 is represented by the directional arrows 16a and 17a. A connecting line 18 leads from the feed line 16 in a first branch 18 a to an overflow valve 15, which is attached to the upper end of a container feed line 14. In the first branch 18 a of the connecting line 18, a connection for a pressure gauge 19 and / or a pressure switch 18 or the like is also attached. A second branch 18b conducts the pressure and is protected by a cap valve. This serves to ensure that the pressure and function of the container 1 can be adjusted without affecting the circulation line. The second branch 18b of the connecting line 18 forms the classical expansion line and is integrated in the dynamic zero point of the system. By the second branch 18b of the static pressure of the system is provided by the excess amounts of circulating liquid are passed through the pressure-controlled, adjustable spill valve 15 in the expansion and degassing tank 1. In the lines 16 and 17 is static and dynamic pressure. Via the connecting line 18, the pressures in the lines 16, 17 and 18b are compensated.
    The wiring harness from the connecting line 18 and the first branch 18a thus serves to equalize pressure and is therefore also referred to as expansion line. If, during operation of the circulatory system, the circulating liquid circulating there expands, the consequent increase in pressure in the connection or expansion line 18 causes the overflow valve 15 to open and the additional volume via the container feed line 14 to the expansion and degassing tank 1 is delivered. The overflow valve 15 is designed as a differential pressure valve and protected by a sieve against contamination. The screen retains coarse particles that can be washed away from the fluid circuit while small particles are readily flushed by the pressure differential between the operating pressure in the return line 17 and the much lower internal pressure in the expansion and degassing vessel 1. The container inlet line 14 with air outlet 14a can already excrete gases, wherein the air outlet 14a is already in the upper region of the container inlet line 14 in a partial expansion (partial housing).
    A safety valve with or without nitrogen bottle is advantageously no longer required at the top of the container lid 3.
    Another assembly relates to the supply and removal of additional or filling liquid in and out of the expansion and degassing 1. For better visibility, the enlarged view was selected according to Figure 2. Here, the case is considered that the circulatory system is a heating system in which the circulating liquid consists of specially treated water. The refill liquid in this case consists of fresh water. The supply takes place via a closed, in its entirety 23 denoted te fresh water supply line 23, the end portion 23a as a solid pipe pressure-tight passed through the container lid 3. This fresh water supply line 23 is connected via a solenoid valve 27 to a system separator (pipe separator) 24. The connecting line between the system separator 24 and the solenoid valve 27 consists of a flexible pipe section 25 and an intermediate piece 26. The fresh water flows to the system separator 24 via its inlet port 24a. Such system separator are known in terms of their mode of action and available as ready-to-install units on the market for additional components of plant construction. Such system separators consist of two series-connected backflow preventer, which are equipped with a ventilated central zone. Their function in the expansion and degassing device according to the invention will be described below.
    To the latter assembly also includes a vent valve 30 which is attached to the container lid 3 and a connection between the container interior and the Austrian patent office AT13199U1 2013-08-15
    Outdoor atmosphere can produce. The vent valve is based on the function of a flap plate 31, which stands out under the effect of a slight overpressure in the interior of the expansion and degassing tank 1 and thereby allows the excess pressure to flow. In this way, excess air from the container interior to escape to the outside, as well as excess amounts of liquid when the liquid unexpectedly extends to the inside of the container lid 3. Then, the guided flap 31 also lifts and allows this excess liquid to flow into an intermediate chamber 32.
    A first overflow line 28 leads from the system separator 24 to an overflow siphon 29. Further, from the intermediate chamber 32, a second overflow line 33 also leads to the overflow siphon 29th
    The expansion and degassing device described operates as follows: It is again assumed that the circulation system is a building heating and that the water in the expansion and degassing tank 1 is approximately in the height of the area boundary 34. It forms there a settling zone A, in which salts and oxide floats or solid substances, especially lime deposit. It is now intended to supply the Ausdehnungsund degassing tank 1 more fresh water. This will be done automatically at the latest when the lower level switch 9 responds. Then the solenoid valve 27 opens.
    The fresh water flows through the system separator 24, the flexible pipe section 25 and the intermediate piece 26 through the solenoid valve 27 through last via the end portion 23a directly into the expansion and degassing 1 into it, without coming into contact with the atmospheric oxygen. When flowing in the expansion and degassing 1 a relaxation area E and below a calming B form, see. the range limit 35, as detailed in CH 694 895 A5. The incoming fresh water, but also the water already in the container, degasify in the vacuum or in the suppression of the relaxation area E, so that all gases largely escape.
    Meanwhile, the calming area B exerts a piston action, which causes the pressure in the expansion area E to rise as the liquid level in the expansion and degassing tank 1 rises, thus finally eliminating the slight depression which initially exists in the expansion and degassing tank becomes. A slight overpressure raises the guided flap 31 of the venting valve 30, so that the air and gas portions located in the container 1 escape into the intermediate chamber 32 and thus pass into the outside atmosphere, without again in contact with the fresh water or the circulating water of the circuit get.
    By the escape of air and gas fractions from the expansion and degassing 1 at the same time a pressure equalization, so that the flap 31 closes again tight under the influence of gravity. In this way, no oxygen-containing outside air enters the interior of the expansion and degassing container. 1
    In the operation of the circulatory system, the circulating water will gradually warm up and expand as a result. This leads in the parallel secondary circuit from the supply line 16 and the return line 17 to a pressure increase, which affects the overflow valve 15 via the connecting or expansion line 18 and the first branch 18a. This opens at a specified limit and allows the excess amount of circulating water to flow through the container feed line 14 down into the expansion and degassing tank 1. There escape the gases contained in the fluid, as has already been described for the fresh water. The liquid level in the expansion and degassing tank 1 thereby further increases.
    It may occur that the amount of water in the expansion and degassing tank 1 increases in an unforeseen manner from the level of the lower level switch 9 to the tank lid 3. As a result, in the fixed fresh water 7/14 Austrian Patent Office AT13199U1 2013-08-15
    Supply line 23 gradually makes a backlog noticeable, which affects the system separator 24 and this can be addressed. In this case, the system separator 24 locks the fresh water supply in a functional manner and opens to the first overflow line 28. As a result, the water coming from the expansion and degassing vessel 1 runs via the first overflow line 28 into the overflow siphon 29. The system separator 24 has thus protected the pending at his inlet pipe fresh water before originating from the expansion and degassing tank 1 liquid; because these can no longer enter the fresh water network.
    On the other hand, if the circulating water in the circulatory system cools, this assumes a lower volume, so that the pressure switch 19 responds and the electronics, the pressure holding pump 13 turns on. In this way, the amount missing in the system is replenished and maintained the operating pressure in the circulatory system. As a result, the check valve 12 opens, and the water in the expansion and degassing tank 1 is supplied through the suction pipe 11 to the return pipe 17. This consumption can be very strong, so that the water level in the expansion and degassing tank 1 drops very rapidly to the lower level switch 9. This results in the relaxation and degassing E a significant oppression. There is a risk that the container implodes. In addition, with strong suppression, the fluid partially evaporates in the setting region A.
    To prevent the risk of imploding and boiling, the solenoid valve 27 opens in the fresh water connection at too high a suppression. The consequence of this is that filling liquid flows into the expansion and degassing tank 1. This also avoids that the interior of the expansion and degassing tank 1 comes into contact with the atmospheric oxygen. The inflow of the liquid into the relaxation area E causes a pressure equalization and thus and the limitation of the excessive negative pressure. It is thus avoided the risk that the container 1 imploded, and yet the water in this container 1 has not come into contact with oxygen. In contrast to a widespread state of the art, a membrane is not required. In the negative pressure, the gases from the heating water in the settling area A and in the calming area B escape even better. A whirring of the water leads to an even better degassing.
    In the embodiment according to FIGS. 1 and 2, the pressure measuring signal of the vacuum measuring cell 36 acts directly on the magnetic valve 27 in order to open it if necessary. This vacuum function takes precedence over the usual level function initiated by the lower level switch 9, i. whenever the vacuum signal (of 36) requires opening, and if the level signal (of 9) at the same time prefers closing, then the solenoid valve 27 is opened. The direct control can be done by a 220 volt signal to which the switching elements are adapted. If, in the priority, too much medium enters the whole system, an unnecessary amount flows via the siphon 29.
    The new vacuum function also takes precedence over the pressure maintenance in the system and possibly brings the pressure holding pump 13 to a halt.
    In Fig. 3 is alternatively an electronic control unit 37, which is located in an electronic control area A2, shown with its power cable connection 38. Their alternative function is to convert the measurement signal of the vacuum cell 36 into an opening signal for the solenoid valve 27 in the fresh water feed (23 to 27), again with priority over the level measurement signal. Even with this alternative, wholly or partially 220 volt signals can be used as control signals. The priority circuit can be carried out in this alternative within the control unit 37, wherein the two control signals can also be weighted against each other expediently. 8/14 Austrian Patent Office AT 13 199 Ul 2013-08-15
    LIST OF REFERENCE SIZES A1 Containers for expansion, degassing, settling, desliming and settling A2 Control area (electronics) A4 Valve control area A12 End cap A Settling area of tank A1 B Settling area E Expansion / degassing area 1 Exterior of expansion and degassing tank A1 2 Tank wall 3 Container interior side of cover A12 4 Container bottom 5 Sheath (heat insulation) 6 Drain valve 7 Water level glass 8 Upper level switch (optional for water supply) 9 Lower level switch 10 Inspection and cleaning opening 11 Suction line 12 Check valve for suction line 11 13 Pressure holding pump 14 Tank inlet line 14a Air outlet 15 Overflow valve 16 Feed line 16a Flow direction on 17 Return line 17a Flow direction on 18 Connecting line (expansion line) 18a First branch of the expansion line 18 18b Second branch of the expansion line 18 19 Pressure gauge / pressure monitor 23 Fri water supply pipe 23a End area of the fresh water inlet 24 System separator (BA) 24a Inlet 25 Flexible pipe section (eg flexible hose of length 1.0 m) 9/14 Austrian Patent Office AT 13 199 Ul 2013-08-15 26 Adapter 27 Solenoid valve 28 First overflow pipe 29 Overflow siphon 30 Bleed valve (degassing valve) 31 Flap 32 Intermediate chamber 33 Second overflow line
    34 Range boundary between settling area A and calming area B
    35 Range limit between calming area B and relaxation area E 36 Vacuum load cell 37 Control unit with collective fault unit 38 Power cord connection 10/14
    权利要求:
    Claims (12)
    [1]
    Austrian Patent Office AT13199U1 2013-08-15 Claims 1. Expansion and degassing device (A1, A2, A4, A12) for connection (16, 17) to a circulatory system in which a circulating liquid is circulated while maintaining pressure and volume Changes, wherein the expansion and degassing a closed expansion and degassing container (1) with a container lid (A12, 3), via a pressure holding pump (13) with a first location and an overflow valve (15) with a second location the circulation fluid conveyed in the circuit is to be connected, and (1) besides a venting and safety valve (30), a device (23 to 27) for the level-dependent supply of replenishment fluid and a further device for reducing a negative pressure in the expansion - And degassing container (1), characterized in that a) for supplying the filling liquid, a closed supply line (23) v is seen at the beginning of a system separator (24) and the (23) in its end region (23a) pressure-tight through the container lid (3) of the expansion and degassing container (1) is passed, wherein upon occurrence of a critical pressure increase in the Supply line (23), pressure increase from the end region (23a) ago, the system separator (24) opens a conveying path (28) which leads past the expansion and degassing container (1), and b) the means for reducing a negative pressure, a pressure cell (23 36), which controls the means (23 to 27) for supplying replenishment liquid for the purpose of vacuum reduction below a threshold value.
    [2]
    2. expansion and degassing device (1) according to claim 1, characterized in that the pressure-holding pump (13) and the overflow valve (15) to a circulation line (16, 17) are connected, consisting of a supply line (16) and a return line ( 17), wherein the feed line (16) to the first point and the return line (17) is connected to the second point of the circulatory system.
    [3]
    3. expansion and degassing device (1) according to claim 1, characterized in that the pressure-holding pump (13) and the overflow valve (15) to a circulation line (16, 17) are connected, consisting of a supply line (16) and a return line ( 17), both of which are connected at a distance from each other at two points of the return line of the circulatory system.
    [4]
    4. expansion and degassing device (1) according to at least one of claims 1 to 3, characterized in that the system separator (24) is designed as a three-chamber system with controllable pre-pressure, medium-pressure and back pressure zone so that from the expansion and degassing tank (1) in the closed supply line (23) flowing back liquid is completely discharged to a collecting point.
    [5]
    5. expansion and degassing device (1) according to claim 4, characterized in that the collecting point is an overflow siphon (29).
    [6]
    6. expansion and degassing device (1) according to at least one of claims 1 to 5, characterized in that in the expansion and degassing tank (1) liquid (A) and overlying air and / or gas layers (E, B) structurally immediately adjacent to each other.
    [7]
    7. expansion and degassing apparatus (A1, A2, A4, A12) according to any one of the preceding claims, characterized in that the pressure measuring signal (of 36) as a control signal of a solenoid valve (27) takes precedence over the Niveaumeßsignal (of 9) as the control signal of Solenoid valve (27).
    [8]
    8. expansion and degassing device (A1, A2, A4, A12) according to claim 7, characterized in that the signal of the pressure cell (36) via an electronic control portion (A2) to the solenoid valve (27) acts. 11/14 Austrian Patent Office AT13199U1 2013-08-15
    [9]
    9. expansion and degassing device (A1, A2, A4, A12) according to claim 7, characterized in that the signal of the pressure cell (36) acts directly on the solenoid valve (27).
    [10]
    10. expansion and degassing device (A1, A2, A4, A12) according to claim 7 or 8 or 9, characterized in that the switching signal of the pressure cell (36) is a 220-volt switching signal, the direct - or via the control area ( A1) - matches a 220 volt signal from the solenoid valve (27).
    [11]
    11. circulatory system of a building heating, is circulated in the circulating water and experiences pressure and volume changes, characterized in that it is provided for treating the circulating water with an expansion and EntgasungsVorrichtung according to at least one of claims 1 to 10.
    [12]
    12. Refrigeration cycle system, in which a cooling liquid is circulated while experiencing pressure and volume changes, characterized in that it is provided for the treatment of the cooling liquid with an expansion and degassing device according to at least one of claims 1 to 10. For this 2 sheets drawings 12/14
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    同族专利:
    公开号 | 公开日
    DE102012201645A1|2013-08-08|
    US20130228314A1|2013-09-05|
    DE102012201645B4|2016-07-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19705741C1|1997-02-14|1998-10-08|Hans Friedrich Bernstein|Modular expansion and deaeration unit designed for mass production|
    DE10329740A1|2003-07-02|2005-05-19|Bernstein, Hans Friedrich|Water treatment plant for removal of dissolved air and lime scale has vacuum chamber and incorporates permanent magnet which can encourage formation of calcium carbonate crystals|
    US3089513A|1960-12-01|1963-05-14|Jr Chester Howard Kirk|Combination fill valve and expansion tank|
    US4489746A|1982-05-28|1984-12-25|Mueller Co.|Backflow preventer apparatus|
    EP0313599B1|1987-05-05|1991-10-23|A. Schwarz + Co.|Device for expansion transfer in liquid cycle systems, in particular of heating and cooling installations|
    AT2554U1|1997-01-31|1998-12-28|Apaco App Ag|METHOD AND DEVICE FOR DEGASSING HEATING WATER IN A HEATING SYSTEM|
    CH694895A5|2000-07-13|2005-08-31|Air Sep Vertriebs Und Service|Compact installation unit functions with expansion and degassing container and together form a modular device|
    US6418969B1|2000-11-08|2002-07-16|Watts Regulator Co.|In-line thermal expansion tank|
    US20100263738A1|2009-04-17|2010-10-21|Taylor Innovations, L.L.C.|Pressure Equalization Assembly for a Liquid Storage Vessel|
    KR101098821B1|2010-06-17|2011-12-26|플로우테크 주식회사|Control method of pressure maintenance unit for heating and cooling system including a plurality of sensors|
    DE102010047514A1|2010-10-05|2012-04-05|Hans Friedrich Bernstein|Expansion- and degassing device useful in circulatory system of building heating system, and cooling circuit system, comprises e.g. expansion- and degassing container, and device for supplying liquid to ventilation- and safety valve|CN111497454B|2015-07-31|2021-09-28|科迪华公司|Ink delivery system and method|
    DE102016106061A1|2016-04-04|2017-10-05|Sinusverteiler Gmbh|Connection unit for connecting a pressure maintenance and / or degassing device with a heating circuit manifold of a heating system|
    CN112973196A|2021-03-15|2021-06-18|江苏大航有能输配电有限公司|Method for vacuum defoaming of high-viscosity liquid by using pressure difference and aerodynamic force generated by gas in liquid|
    法律状态:
    2014-04-15| PC| Change of the owner|Owner name: AIR-SEP VERTRIEBS- UND SERVICE AG, CH Effective date: 20140304 |
    2018-10-15| PC| Change of the owner|Owner name: KOREX VERFAHRENSTECHNIK GMBH, DE Effective date: 20180817 |
    2020-03-15| MM01| Lapse because of not paying annual fees|Effective date: 20190731 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012201645.7A|DE102012201645B4|2012-02-03|2012-02-03|EXTENSION AND DEGASSING DEVICE FOR CONNECTION TO A CIRCULATORY SYSTEM, ESPECIALLY THE CIRCULAR SYSTEM OF BUILDING HEATING|
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