• 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:
    The invention relates to a connection device (2) for connecting a heat source (7) to a heat pump cycle (5), wherein the connection device (2) comprises: a first connection (21) and a second connection (22) via which a parallel connection of a a pump (25) and a heat exchanger (24) having series connection and a check valve (23) in a heat pump circuit (5) can be incorporated, wherein the heat source (7) can be connected to the heat exchanger (24).
    公开号:AT13029U1
    申请号:TGM256/2011U
    申请日:2011-05-05
    公开日:2013-04-15
    发明作者:
    申请人:Iff Kollmannsberger Kg；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13 029U1 2013-04-15
    description
    CONNECTION DEVICE FOR CONNECTING A HEAT SOURCE TO A HEAT PUMP CIRCUIT
    The invention relates to a connection device for connecting a heat source to a heat pump cycle.
    It is well known that heat pumps are used to support the hot water or heating in households. Here, the primary side of the heat pump with a ground collector arranged in the earth forms a heat pump cycle. In the heat pump cycle is a heat transfer medium, which circulates through a circulation pump in the circulation. The heat pump extracts heat from the heat transfer medium coming from the ground collector and makes it available to a consumer at a higher temperature level via its secondary side. The heat transfer medium is returned after heat extraction back into the ground collector. Overall, this heat is extracted from the earth and made available to a consumer.
    The disadvantage here is that more heat is usually extracted from the earth through the collector, as can be replenished by convection from the Earth's interior or by sunlight over the seasons away. As a result, after a certain period of time, the terrestrial area in which the ground collector is located is "depleted" in terms of energy delivery. is, so that the earth collector must be relocated elsewhere.
    To solve this problem, it is known from the prior art to incorporate a solar collector for the regeneration of the earth collector or the earth region in the heat pump cycle. Such integration of a solar collector is known, for example, in the prior art from German Utility Model DE 20 2007 013 888 U1. In the heating system shown in this publication, a heat exchanger is integrated via two valves and a pump in the heat pump cycle. To the heat exchanger, a solar collector is connected, whereby the heat pump supplied to the heat pump cycle, the heat supplied by the solar collector and thus the earth's area can be regenerated by supplying heat.
    A disadvantage of this heating system is that the heat exchanger is integrated via two counter-acting shut-off valves in the heat pump cycle and thereby a not inconsiderable control effort arises. As a result, existing heat pump systems can only be retrofitted with a high cost / cost to a solar collector for the regeneration of the earth's area.
    Another disadvantage of this heating system is that the volume flows through the heat exchanger or parallel to this can be set only poorly and with a very high control effort.
    It is therefore an object of the present invention to provide a connection device with which it is possible to integrate a heat source in a heat pump cycle without much effort.
    This object is achieved with a connection device with the features of the protection claim 1.
    Furthermore, this object is achieved with an additional module or a heating system with the features of the claims 5 and 6.
    Further embodiments and modifications of the invention are subject of the dependent claims.
    In the following, a preferred embodiment of the invention will be explained with reference to the accompanying figure. In the figure, a heating system is shown, in which a solar collector is connected via a connecting device to a heat pump cycle for the regeneration of an earth area.
    As shown in the figure, the heating system 1 comprises a heat pump 3, which is connected with its primary side to a ground collector 4. The ground collector may be formed, for example, as a probe or as a horizontal collector. The primary side of the heat pump 3 and the earth collector 4 together form a heat pump cycle, in which a heat transfer medium can circulate by operation of a circulation pump 31. The heat transfer medium is preferably a fluid mixed with an antifreeze. The circulating pump 31 is shown in the figure as a built-in heat pump pump, however, may also form an independent unit and be located elsewhere in the heat pump cycle. During operation of the circulation pump 31, the heat transfer medium, hereinafter called brine, flows via a line 51 from the ground collector 4 coming to the primary side 30 of the heat pump 3, at which the brine heat is removed, and then back via a line 52 back into the earth collector , The heat extracted from the brine is provided via the secondary side 32 of the heat pump 3 to a consumer at a higher temperature level. This may be, for example, a support of a heater or the preparation of hot water.
    In other words, during operation of the heat pump 3, the earth region in which the ground collector is laid / arranged, withdrawn heat and made a consumption on the secondary side 32 of the heat pump 3 available.
    In the heat pump cycle 5, a connecting device 2 according to the invention is arranged, via which a later explained heat source 7 is integrated into the heat pump cycle 5 thermally. The elements of the connection device are hydraulic elements and are flowed through by the fluid or the brine.
    More precisely, the connection device 2 comprises a first connection 21 and a second connection 22 via which the connection device 2 is intended to be integrated into the heat pump cycle 5.
    Between the first port 21 and the second port 22 is a closure device 23, which allows the brine flow in only one direction and to which a series circuit of a heat exchanger 24 and a conveyor 25 is arranged in parallel, is provided. The closure device 23 is preferably designed as a check valve and the conveyor 25 as a circulating pump, hereinafter referred to as brine pump. The check valve 23 is located in the connecting device 2 so that it opens at a flow direction of the brine from the second terminal 22 to the first terminal 21. In the opposite direction of conveyance of the brine closes the check valve 23. The check valve is preferably designed as a special valve, which has a very high density in the closed position and in the open position represents almost no flow resistance. An example of a preferred valve is a ball check valve AVK of the series 53 / 3X (construction according to LGA standard) The brine pump 25 is connected upstream of the heat exchanger 24, but this can also be downstream and has a conveying direction of the second Terminal 22 to the first terminal 21. The check valve 23 and the brine pump 25 are thus located in the connection device 2 such that, viewed in isolation, the connection device 2, the brine pump 25 can not generate circulation in the connection device 2 due to the arrangement of the check valve 23.
    In the heating system, the check valve 23 is after integration of the connection device 2 such that neither the circulation pump 31 nor the brine pump 25 are hydraulically short-circuited. This also regardless of whether only one of the two pumps 31 and 25 or both are in operation.
    Preferred embodiments of the heat exchanger z. Eg plate heat exchanger, pipe heat exchanger, air-water heat exchanger or an absorber mat to be arranged in a water pipe (sewer pipe). One or more further heat source (s) can preferably be connected to the heat exchanger 24.
    Through the heat exchanger 24, the heat pump cycle 5 heat can be supplied. Preferably, a solar collector for supplying heat is connected to the heat exchanger 24, as shown.
    From the solar collector 7 runs a line 61 to the heat exchanger 24 and from this a line 62 back to the solar collector 7, whereby a solar collector circuit 6 is formed. In the solar collector circuit 6 is a circulation pump 63 (preferably with controller), hereinafter referred to as solar pump, which is provided for generating a circulation of a heat transfer medium in the solar collector circuit 6. During operation of the solar pump 63, the heat transfer medium passes via the line 62 to the solar collector 7, is heated in response to the solar radiation to the solar collector through this and then runs through the line 61 in the direction of the heat exchanger 24th
    The solar collector is preferably designed as a vacuum flat collector and thereby has a very low hydraulic pressure loss. If several solar collectors are provided, they are preferably interconnected according to the Tichelmann principle.
    The solar collector circuit 6 may preferably be configured such that certain customers can be supplied directly by the solar collector 7 with heat. For such customers, it may, for. B. to the preparation of hot water, a heater or a swimming pool or the like. For this purpose, one or more connections 64 and one or more switching units 65 are provided in the solar collector circuit 6. The switching unit 65 is preferably a two-way valve. When the first and the second terminal of the switching unit 65 are connected to each other, the solar pump 63 conveys the heat transfer medium at the terminal 64 in the direction of a consumer and coming from the customer via the switching unit 65 and the line 62 in the direction of the solar collector 7. When using the Two-way valve does not flow through the heat exchanger 24 in this operating state, the heat transfer medium.
    When the switching unit 65 is connected such that its first and third terminals are connected, the solar pump 63 conveys the heat transfer medium through the lines 62 and 61 to the solar collector and the heat exchanger 24th
    In this operating state, the heat supplied by the solar collector via the heat exchanger 24 to the heat pump circuit 5 can be supplied. The heat exchanger may generally be beyond the already mentioned preferred embodiments, an element that connects the heat pump circuit 5 to the solar collector circuit 6 either physically (fluid exchange) or only thermally (heat transfer without fluid exchange).
    In the following, the various operating conditions and the control of the heating system will be explained.
    EXCLUSIVE HEAT PUMP OPERATION
    If the solar collector is not able to provide a usable heat output due to low radiation, a consumer is supplied via the secondary side 32 of the heat pump 3 with heat.
    In this operating condition, the circulation pump 31 is the only operating pump, wherein the brine is conveyed via the line 51 from the ground collector 4 coming through the open check valve 23 to the primary side 30 of the heat pump 3. After the heat pump 3 has withdrawn this heat, the brine is then passed through line 52 back into the ground collector.
    The check valve 23 in this case acts like a hydraulic short circuit, i. forms almost no hydraulic resistance, which is why the operation of the heat pump circuit does not differ from that without the connection device. It can also be seen that the heat pump operation is not impaired by integration of the connection device 2. HEAT PUMP OPERATION + HEAT SUPPLY OVER THE HEAT EXCHANGE (COMBINATION OPERATION) If the solar collector 7 provides a usable heat output to be supplied to the heat pump cycle, in addition to the circulation pump 31, the brine pump 25 is put into operation. A certain part of the brine runs at the connection 22 in the direction of the heat exchanger 24 and from there via the connection 21 in the direction of the primary side of the heat pump 3.
    After passing through the primary side 30 and heat removal by the heat pump 3, the brine again runs via the line 52 back into the ground collector, In response to the flow rate of the brine pump 25, a certain proportion of brine flows through the heat exchanger 24 and the other part by the non-return valve 23. In other words, by the control of the brine pump 25 and / or the circulation pump 31, the flow rates through the check valve 23 and the parallel series circuit are controlled.
    The delivery rates of the pumps can be controlled so that the volume flow flows exclusively through the heat exchanger 24.
    Overall, in this operating state (combination operation) of the heat pump 3 additional heat obtained by the solar collector 7 is provided, so that the earth's area less heat must be withdrawn via the ground collector 4 and the earth's area is less burdened.
    EXCLUSIVE REGENERATION OPERATION
    If the heat pump 3 is not in operation, the earth region can be regenerated by supplying heat, which is supplied to the heat pump cycle 5 via the heat exchanger 24. In this operating state, only the brine pump 25 needs to be in operation. The brine flows via the line 51 coming from the ground collector and the second terminal 22 in the direction of the heat exchanger 24 and the primary side of the heat pump 3 and then via line 52 back into the earth collector 4. On the primary side 30 of the heat pump 3 is exclusively Regeneration operation of the brine no heat removed, whereby the heat recovered by the solar collector 7 is completely supplied to the earth's area.
    The check valve 23 prevents the heat pump 3 and the ground collector 4 are hydraulically short-circuited. In other words, the check valve 23 ensures that the circulation takes place through the earth collector. Depending on the heat supplied by the solar collector 7, the ground collector or the earth region is regenerated.
    In the regeneration operation, the circulation pump 31 may also be in operation in addition to the brine pump 25. However, the delivery rate of the brine pump is then so great that at least some of the brine can flow over the heat exchanger 24.
    CONTROL OF THE HEATING SYSTEM
    In the following, the control of the heating system will be described.
    Generally, in the heating system shown in the figure, the solar collector 7 and the heat pump 3 can be controlled via conventional controls and controls to optimize the heat yield. In this case, customary control algorithms for regulating the delivery rate of the pumps come into consideration.
    For controlling and regulating the volume flow via the heat exchanger 24, a temperature sensor for detecting the brine temperature is preferably provided in / on the first connection 21. The temperature sensor measuring the brine temperature supplies a reference value, which is compared with the value measured by a temperature sensor in the solar circuit 6 (preferably directly at the solar collector 7). If this comparison delivers the result that there is a usable temperature difference between the solar collector 7 and the heat pump circuit 5, the brine pump 25 starts operating.
    D. h, that supplied during operation of the heat pump 3, this additional supplied by the solar collector heat 7 or at standstill of the heat pump 3, the regeneration operation is added.
    The temperature sensor in the heat pump cycle 5 is preferably provided in / at the first port 21, whereby the temperature of the brine coming from the heat exchanger can be measured well. As a result, it can be advantageously prevented that temperature maximum limits in the heat pump cycle 5 are exceeded. If the solar yield is too large, i. the temperature of the brine coming from the heat exchanger are too high, the pumps 25 and / or 31 are controlled in combination operation such that a larger proportion of the brine passes through the check valve, or the brine pump 25 is switched off in the regeneration mode.
    The temperature sensor, which measures the brine temperature of the brine coming from the heat exchanger 24, is usually installed within a building and, for this reason, assumes a room temperature after a certain period of non-use of the heat pump cycle 5. In order for this temperature sensor to be able to reliably measure the temperature of the brine from the heat exchanger 24, the brine pump 25 is activated at uniform, adjustable time intervals, thereby detecting the temperature of the brine.
    If it is determined during the temperature measurement that there is a usable temperature difference between the solar collector circuit 6 and the heat pump circuit 5, the brine pump 25 starts up.
    If no usable temperature difference detected, the brine pump 25 is stopped again and the process repeated at a later time.
    If, after a certain number of activations of the brine pump 25, no usable temperature difference can be repeatedly determined, the control of the brine pump 25 can preferably be dispensed with for an adjustable time. Only when the temperature at the solar collector makes a use sense again or a set interruption period has expired, the brine pump 25 is controlled again. Due to this mode of operation can be dispensed with a timer, which may result inaccuracy due to malfunction of the system.
    In the control mode, attention is always paid to the observance of adjustable temperature limits in order to protect various built-in materials and components against overheating. The protection takes place depending on the operating mode and operating state by controlling the solar pump 63 and / or the pumps in the heat pump cycle.
    As is apparent from the above description, with the connecting device according to the invention, a further heat source without problems, quickly and easily be integrated into a heat pump cycle, with no complicated control of shut-off valves, switches or the like must be used. It is only necessary to control the activation of the brine pump 25 and the solar pump.
    Furthermore, it is possible by the connection device to provide an additional module, which includes the solar collector circuit 6 and the connection device 2, for retrofitting into an existing heat pump cycle. This makes it possible to connect a solar collector to the heat pump cycle without having to intervene in the control of the heat pump 3 at all. 5.7
    权利要求:
    Claims (5)
    [1]
    Austrian Patent Office AT 13 029 Ul 2013-04-15 Claims 1. Connection device (2) for connecting a heat source (7) to a heat pump cycle (5) comprising: a first connection (21) and a second connection (22) via which a Parallel circuit of a pump (25) and a heat exchanger (24) having series connection and a check valve (23) can be incorporated into a heat pump circuit (5), wherein the heat source (7) can be connected to the heat exchanger (24).
    [2]
    2. Connecting device according to claim 1, wherein the check valve (23) is arranged in the parallel circuit, that the pump (25) can not generate circulation in the parallel circuit.
    [3]
    3. Connection device according to claim 1 or 2, wherein the heat exchanger (24) is a plate heat exchanger, a tube-bundle heat exchanger, an air-water heat exchanger or an absorber mat.
    [4]
    4. Additional module for a heat pump cycle (5) comprising: a connection device (2) according to one of the preceding claims 1 to 3 and a solar collector (7) which is connected to the heat exchanger (24), so that when integrating the connection device (2) in a heat pump cycle (5) this supplied by the solar collector (7) heat can be supplied.
    [5]
    5. heating system comprising: an additional module according to claim 4 and a heat pump (3) with its primary side and a heat storage (4) the heat pump circuit (5), wherein the additional module via the connecting device (2) in the heat pump cycle (5) involved whereby, during operation of the pump (25), heat can be supplied to the heat pump circuit (5) via the heat exchanger (24) to support the heat pump (3) and / or for storage in the heat accumulator (4). For this 1 sheet drawings 6/7
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    同族专利:
    公开号 | 公开日
    DE202010005384U1|2010-10-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5651265A|1994-07-15|1997-07-29|Grenier; Michel A.|Ground source heat pump system|
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    DE102014000901B4|2013-01-29|2018-03-22|Ritter Energie- Und Umwelttechnik Gmbh & Co. Kg|solar system|
    AT516403B1|2015-01-08|2016-05-15|Masswohl Josef Dipl Ing Dr Techn|Process for the regeneration of the primary energy storage of a brine water heat pump|
    EP3460340B1|2017-09-25|2021-05-26|ATF Anwendungszentrum für Technik und Forschung UG |Method for providing heat, heat recovery system and heat provision unit|
    法律状态:
    2016-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20150531 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202010005384U|DE202010005384U1|2010-05-05|2010-05-05|Connecting device for connecting a heat source to a heat pump cycle|
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