Energy storage air conditioning system connected with fire pool through plate heat exchanger

Abstract

The utility model relates to an energy storage air-conditioning system connected with a fire pool through a plate heat exchanger. A water supply pipe of a heat pump system is connected with a first water inlet pipe of an air-conditioning system and a second water inlet pipe on the secondary side of the plate heat exchanger; a water return pipe of the heat pump system is connected with a first water outlet pipe of the air-conditioning system and a second water outlet pipe of the secondary side of the plate heat exchanger; a heat exchange water inlet pipe of the fire pool is connected with a primary side water outlet pipe of the plate heat exchanger; a heat exchange water outlet pipe of the fire pool is connected with a primary side water inlet pipe of the plate heat exchanger; a first circulating water pump is arranged on a primary side water outlet pipe of the plate heat exchanger; a second circulating water pump is arranged on a secondary-side second water outlet pipe of the plate heat exchanger; a third circulating water pump is arranged on a first water outlet pipe of the air-conditioning system; the three sets of water pumps correspond to water circulation in the air-conditioning system, the heat pump system and the fire pool respectively, and compared with a system in which the secondary side of the plate heat exchanger and the air-conditioning system share one set of water pump, the three sets of water pumps bear respective circulation pipelines, the lift of the water pumps can be effectively reduced, and the operation efficiency of the water pumps is improved.

Description

Technical Field

[0001] The utility model relates to an energy storage air conditioning system, in particular to an energy storage air conditioning system which utilizes a plate heat exchanger connected with a fire water tank. Background Art

[0002] Energy storage air conditioning system uses the sensible heat of water to store cold and heat. Energy storage air conditioning system can store heat or cold water. Among them, water cold storage is mainly used for cooling in summer, and water heat storage is mainly used for heating in winter. Energy storage air conditioning system has the characteristics of saving air conditioning system operating costs, balancing power grid load, energy saving and environmental protection.

[0003] The existing energy storage air conditioning system connects the heat pump system and the air conditioning system to the fire water tank through a plate heat exchanger, but the secondary side of the plate heat exchanger and the end of the air conditioning system share a set of water pumps. Due to the different resistances of each circulation pipeline under different working conditions, the actual head of the same water pump in different circulation pipelines is different, which will reduce the operating efficiency of the water pump.

[0004] In summary, how to meet the resistance requirements of different circulation pipelines and improve the operating efficiency of water pumps has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to meet the resistance requirements of different circulation pipelines and improve the operating efficiency of the water pump;

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] The utility model is an energy storage air conditioning system connected with a plate heat exchanger and a fire water tank, comprising: a water supply pipe of a heat pump system is connected with a first water inlet pipe of an air conditioning system and a second water inlet pipe on a secondary side of a plate heat exchanger; a return pipe of the heat pump system is connected with a first water outlet pipe of the air conditioning system and a second water outlet pipe on a secondary side of the plate heat exchanger; a heat exchange water inlet pipe of a fire water tank is connected with a primary side water outlet pipe of the plate heat exchanger; a heat exchange water outlet pipe of the fire water tank is connected with a primary side water inlet pipe of the plate heat exchanger; a first circulating water pump is arranged on the heat exchange water inlet pipe; a second circulating water pump is arranged on the second water outlet pipe; a third circulating water pump is arranged on the first water outlet pipe;

[0008] In this system, three circulating water pumps are provided, namely, a first circulating water pump is provided on the heat exchange water inlet pipe, a second circulating water pump is provided on the second water outlet pipe, and a third circulating water pump is provided on the first water outlet pipe. In this way, the three groups of water pumps are respectively responsible for the circulation of water in the fire water tank, the heat pump system, and the air conditioning system. Each group of water pumps is responsible for its own circulating pipeline. Compared with the system in which the secondary side of the plate heat exchanger and the air conditioning system share a group of water pumps, the water pump head can be effectively reduced, and the water pump operation efficiency can be improved;

[0009] In addition, connecting the air-conditioning system and the energy storage fire water tank through a plate heat exchanger can effectively prevent the circulating water of the air-conditioning system from being contaminated by the water in the fire water tank, reduce the cleaning frequency of the air-conditioning circulation pipes, improve the heat exchange efficiency of the pipes, and extend the service life of the pipes.

[0010] In order to improve the energy storage efficiency of the energy storage fire water pool, the utility model adopts that the heat exchange water inlet pipe is connected to the upper and lower water distribution pipes of the fire water pool; the heat exchange water outlet pipe is connected to the upper and lower water distribution pipes of the fire water pool;

[0011] Upper and lower water distributors and upper and lower rectifier plates are arranged in the fire water pool. The upper and lower water distributors are respectively connected to the heat exchange water inlet pipe and the heat exchange water outlet pipe to make the water in the pool flow evenly, so as to improve the energy storage efficiency of the fire water pool.

[0012] In order to prevent the energy storage air conditioning system from being unable to work due to damage to the first circulating water pump, the second circulating water pump and the third circulating water pump, the utility model adopts a spare circulating water pump connected in parallel to the first circulating water pump, the second circulating water pump and the third circulating water pump;

[0013] In this solution, three backup circulating water pumps are provided. When one of the first circulating water pump, the second circulating water pump, and the third circulating water pump is damaged, the backup circulating water pump starts working, so that the energy storage air conditioning system can continue to work.

[0014] Since the plate heat exchanger needs to be inlet from the bottom and outlet from the top, the bottom-inlet and top-outlet can ensure that the plate heat exchanger is filled with liquid, reduce the entry of air and improve the heat exchange efficiency. Since the second circulating water pump is installed on the second outlet pipe of the plate heat exchanger, the plate heat exchanger is in the bottom-inlet and top-out mode when the system is in the cold storage condition; but when the system switches to the energy storage tank cooling condition, the water flow direction of the second circulating water pump on the secondary side of the plate heat exchanger is opposite to the water flow direction at the end of the air conditioner. How to continue to achieve the bottom-inlet and top-out state of the plate heat exchanger? The utility model adopts a first reversing water pipe and a second reversing water pipe arranged between the second water inlet pipe and the second water outlet pipe; the first reversing water pipe is connected to the first water inlet pipe as point A, and the first reversing water pipe is connected to the first water outlet pipe as point B; the second reversing water pipe is connected to the first water inlet pipe as point C, and the second reversing water pipe is connected to the first water outlet pipe as point D; wherein point A is located above point C, and point D is located below point B;

[0015] The first reversing water pipe and the second reversing water pipe are cross-connected to the second water inlet pipe and the second water outlet pipe. In this way, when cooling is provided, the liquid enters the water outlet pipe from the water inlet pipe or enters the water inlet pipe from the water outlet pipe through the reversing water pipe, which also achieves the purpose of bottom-in and top-out of the plate heat exchanger.

[0016] In order to remove impurities in the heat pump system, the utility model adopts a decontamination device disposed at the first water outlet pipe of the heat pump system;

[0017] Impurities in the heat pump system can be removed by setting a dirt remover.

[0018] In order to illustrate how the valves are arranged in this system, the utility model adopts a first valve P1 provided at the water inlet pipe of the heat pump system; a second valve P2 is provided at the first water inlet pipe of the air-conditioning system; a fourth valve P3 is provided at the first water outlet pipe of the air-conditioning system; a third valve P4 is provided at the return pipe of the heat pump system; a fifth valve P5 is provided at the second water inlet pipe; a sixth valve P6 is provided between point A and point C; a seventh valve P7 is provided between point B and point D; an eighth valve P8 is provided at the second water outlet pipe; a ninth valve P9 is provided on the first heat exchange tube; a tenth valve P10 is provided on the second heat exchange tube; a fourteenth valve is provided when the heat exchange water inlet pipe is connected to the upper water distribution pipe; an eleventh valve is provided when the heat exchange water outlet pipe is connected to the upper water distribution pipe; a twelfth valve is provided when the heat exchange water inlet pipe is connected to the lower water distribution pipe; a thirteenth valve is provided when the heat exchange water outlet pipe is connected to the lower water distribution pipe.

[0019] When the heat pump system provides cooling alone during the non-peak electricity period in summer, P1 to P4 are opened and the other valves are closed;

[0020] When the fire water tank provides cooling alone during the non-peak electricity period in summer, P2, P3, P5, P8, P9, P10, P13, and P14 are opened and the remaining valves are closed. At this time, the air-conditioning system is turned off.

[0021] When the heat pump system and the fire water tank are combined to provide cooling during the non-peak electricity period in summer, P1, P2, P3, P4, P5, P8, P9, P10, P13, and P14 are opened, and the other valves are closed;

[0022] When the heat pump system is storing cold during the low electricity period in summer, P1, P4, P5, P6, P7, P8, P11, and P12 are opened, and the other valves are closed;

[0023] When the heat pump system provides heating alone in winter, P1 to P4 are opened and the other valves are closed.

[0024] The beneficial effects of the utility model are as follows: the utility model utilizes an energy storage air-conditioning system connected to a fire water tank by a plate heat exchanger. Three groups of water pumps respectively cope with the circulation of water in the air-conditioning system, the heat pump system and the fire water tank. Each group of water pumps is responsible for its own circulation pipeline. Compared with a system in which the secondary side of the plate heat exchanger and the air-conditioning system share a group of water pumps, the water pump head can be effectively reduced and the water pump operation efficiency can be improved. Connecting the air-conditioning system and the energy storage fire water tank by a plate heat exchanger can effectively prevent the circulating water of the air-conditioning system from being contaminated by the water in the fire water tank, thereby reducing the cleaning frequency of the air-conditioning circulation pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a system schematic diagram of the utility model;

[0027] Figure 2 It is the operation mode switching table of this practical system;

[0028] Figure 3 This is the flow diagram of the cooling medium supplied by the heat pump unit during the non-peak electricity period in summer;

[0029] Figure 4 This is the flow diagram of cooling medium supplied by energy storage pool alone during non-peak electricity period in summer;

[0030] Figure 5 This is the flow diagram of the cooling medium combined with the heat pump unit and the energy storage tank during the non-peak electricity period in summer;

[0031] Figure 6 This is the flow diagram of the cold storage medium of the heat pump unit during the off-peak period in summer;

[0032] Figure 7 It is the flow diagram of the heating medium alone in the winter heat pump system;

[0033] In the figure: 1-air conditioning system, 11-first water inlet pipe, 12-first water outlet pipe, 13-third circulation, 2-heat pump system, 21-heat pump water supply pipe, 22-heat pump return pipe, 3-plate heat exchanger, 31-second water inlet pipe, 32-second water outlet pipe, 33-second circulating water pump, 4-fire water tank, 41-heat exchange outlet pipe, 42-heat exchange inlet pipe, 43-first circulating water pump, 44-upper water distribution pipe, 45-lower water distribution pipe, 5-spare Use a circulating water pump, 51-first reversing water pipe, 52-second reversing water pipe, 6-de-sludge remover, P1-first valve, P2-second valve, P3-third valve, P4-fourth valve, P5-fifth valve, P6-sixth valve, P7-seventh valve, P8-eighth valve, P9-ninth valve, P10-tenth valve, P11-eleventh valve, P12-twelfth valve, P13-thirteenth valve, P14-fourteenth valve. DETAILED DESCRIPTION

[0034] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0035] like Figure 1 As shown, the utility model is an energy storage air conditioning system connected to a fire water tank using a plate heat exchanger, including: a first water inlet pipe 11 of the air conditioning system 1 is connected to a heat pump water supply pipe 21 of a heat pump system 2 and a second water inlet pipe 31 on a secondary side of a plate heat exchanger 3; a first water outlet pipe 12 of the air conditioning system 1 is connected to a heat pump return pipe 22 of the heat pump system 2 and a second water outlet pipe 32 on a secondary side of the plate heat exchanger 3; a heat exchange water outlet pipe 41 of a fire water tank 4 is connected to a primary side water inlet pipe of the plate heat exchanger 3; a heat exchange water inlet pipe 42 of the fire water tank 4 is connected to a primary side water outlet pipe of the plate heat exchanger 3; a first circulating water pump 43 is provided on the heat exchange water inlet pipe 42; a second circulating water pump 33 is provided on the second water outlet pipe 32; a third circulating water pump 13 is provided on the first water outlet pipe 12;

[0036] In this system, three circulating water pumps are provided, namely, a first circulating water pump is provided on the heat exchange water inlet pipe, a second circulating water pump is provided on the second water outlet pipe, and a third circulating water pump is provided on the first water outlet pipe. In this way, the three groups of water pumps are respectively responsible for the circulation of water in the fire water tank, the heat pump system, and the air conditioning system. Each group of water pumps is responsible for its own circulating pipeline. Compared with the system in which the secondary side of the plate heat exchanger and the air conditioning system share a group of water pumps, the water pump head can be effectively reduced, and the water pump operation efficiency can be improved;

[0037] In addition, connecting the air-conditioning system and the energy storage fire water tank through a plate heat exchanger can effectively prevent the circulating water of the air-conditioning system from being contaminated by the water in the fire water tank and reduce the cleaning frequency of the air-conditioning circulation pipes.

[0038] like Figure 1 As shown, in order to improve the heat exchange efficiency of the heat exchange fire water pool, the utility model adopts the heat exchange outlet pipe 41 to be connected with the upper water distribution pipe 44 and the lower water distribution pipe 45 of the fire water pool 4; the heat exchange inlet pipe 42 is connected with the upper water distribution pipe 44 and the lower water distribution pipe 45 of the fire water pool;

[0039] Upper and lower water distributors and upper and lower rectifier plates are arranged in the fire water pool. The upper and lower water distributors are respectively connected to the heat exchange water inlet pipe and the heat exchange water outlet pipe, so that the water flow in the pool is in a laminar state, thereby improving the energy storage efficiency of the fire water pool.

[0040] like Figure 1As shown, in order to prevent the energy storage air conditioning system from being unable to work due to damage to the first circulating water pump, the second circulating water pump, and the third circulating water pump, the utility model adopts a spare circulating water pump 5 connected in parallel to the first circulating water pump 43, the second circulating water pump 33, and the third circulating water pump 13;

[0041] In this solution, three backup circulating water pumps are provided. When one of the first circulating water pump, the second circulating water pump, and the third circulating water pump is damaged, the backup circulating water pump starts working, so that the energy storage air conditioning system can continue to work.

[0042] like Figure 1 As shown, since the plate heat exchanger needs to be inlet from the bottom and outlet from the top, the bottom-inlet and top-outlet can ensure that the plate heat exchanger is filled with liquid, reduce air entry and improve heat exchange efficiency. Since the second circulating water pump is installed on the second outlet pipe of the plate heat exchanger, the plate heat exchanger is in the bottom-inlet and top-out mode when the system is in the cold storage condition; but when the system is switched to the energy storage tank cooling condition, the water flow direction of the second circulating water pump on the secondary side of the plate heat exchanger is opposite to the water flow direction at the end of the air conditioner. How to continue to achieve the bottom-inlet and top-out state of the plate heat exchanger? This utility model The novel adopts a first reversing water pipe 51 and a second reversing water pipe 52 disposed between the second water inlet pipe 31 and the second water outlet pipe 32; the first reversing water pipe 51 is connected to the first water inlet pipe 31 as point A, and the first reversing water pipe 51 is connected to the first water outlet pipe 32 as point B; the second reversing water pipe 52 is connected to the first water inlet pipe 31 as point C, and the second reversing water pipe 32 is connected to the first water outlet pipe 32 as point D; wherein point A is located above point C, and point D is located below point B;

[0043] The first reversing water pipe and the second reversing water pipe are cross-connected to the second water inlet pipe and the second water outlet pipe. In this way, when cooling is provided, the liquid enters the water outlet pipe from the water inlet pipe or enters the water inlet pipe from the water outlet pipe through the reversing water pipe, which also achieves the purpose of bottom-in and top-out of the plate heat exchanger.

[0044] like Figure 1 As shown, in order to remove impurities in the heat pump system, the utility model adopts a first water outlet pipe 12 of the air conditioning system 1 to be provided with a dirt remover 6;

[0045] Impurities in the heat pump system can be removed by setting a dirt remover.

[0046] like Figure 1 , 2As shown in the figure, in order to illustrate how the valves are arranged in this system, the utility model adopts a first valve P1 arranged at the water supply pipe 21 of the heat pump system; a second valve P2 arranged at the first water inlet pipe 11 of the air conditioning system; a third valve P3 arranged at the first water outlet pipe 12 of the air conditioning system; a fourth valve P4 arranged at the return pipe 22 of the heat pump system; a fifth valve P5 arranged at the second water inlet pipe 31; a sixth valve P6 arranged between the points A and C; a seventh valve P7 arranged between the points B and D. ; An eighth valve P8 is provided at the second water outlet pipe 32; a ninth valve P9 is provided on the first reversing water pipe 51; a tenth valve P10 is provided on the second reversing water pipe 52; a fourteenth valve P14 is provided between the heat exchange water inlet pipe 42 and the upper water distribution pipe; an eleventh valve P11 is provided between the heat exchange water outlet pipe 41 and the upper water distribution pipe; a twelfth valve P12 is provided between the heat exchange water inlet pipe 42 and the lower water distribution pipe; a thirteenth valve P13 is provided between the heat exchange water outlet pipe 41 and the lower water distribution pipe.

[0047] like Figure 3 As shown, when the heat pump system provides cooling alone during the non-peak electricity period in summer, P1 to P4 are opened and the other valves are closed;

[0048] The heat pump system transfers the chilled water through the water supply pipe 21 , the first water inlet pipe 11 , the air conditioning system 1 , the second water outlet pipe 12 , the return pipe 22 , and the heat pump system 2 .

[0049] like Figure 4 As shown, when the fire water tank is used for cooling alone during the non-peak electricity period in summer, P2, P3, P5, P8, P9, P10, P13, and P14 are opened, and the other valves are closed. At this time, the heat pump system is closed;

[0050] The fire water tank transfers the chilled water through the heat exchange outlet pipe 41, the plate heat exchanger 3, the second outlet pipe 32, the first reversing water pipe 51, the second water inlet pipe 31, the first water inlet pipe 11, the first outlet pipe 12, the second outlet pipe 32, the second reversing water pipe 52, the second water inlet pipe 31, the plate heat exchanger 3, and the heat exchange inlet pipe 42.

[0051] like Figure 5 As shown, when the heat pump system and the fire water tank are combined to provide cooling during the non-peak electricity period in summer, P1, P2, P3, P4, P5, P8, P9, P10, P13, and P14 are opened, and the other valves are closed;

[0052] The heat pump system passes the chilled water through the water supply pipe 21, the first water inlet pipe 11, the air conditioning system 1, the second water outlet pipe 12, the return pipe 22, and the heat pump system 2; at the same time

[0053] The fire water tank transfers the chilled water through the heat exchange outlet pipe 41, the plate heat exchanger 3, the second outlet pipe 32, the first reversing water pipe 51, the second water inlet pipe 31, the first water inlet pipe 11, the first outlet pipe 12, the second outlet pipe 32, the second reversing water pipe 52, the second water inlet pipe 31, the plate heat exchanger 3, and the heat exchange inlet pipe 42.

[0054] like Figure 6 As shown, when the heat pump system is storing cold during the low electricity period in summer, P1, P4, P5, P6, P7, P8, P11, and P12 are opened, and the other valves are closed;

[0055] The heat pump system transfers the chilled water through the water supply pipe 21, the second water inlet pipe 31, the plate heat exchanger 3, the second water outlet pipe 32, and the return pipe 22 to achieve heat exchange with the fire water tank system. At the same time, the heat exchange inlet pipe 42 passes through the fire water tank 4 and the heat exchange outlet pipe 41 to achieve heat exchange with the heat pump system at the plate heat exchanger 3.

[0056] like Figure 7 As shown, when the heat pump system provides heating alone in winter, P1 to P4 are opened and the other valves are closed.

[0057] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An energy storage air conditioning system using a plate heat exchanger connected to a fire water tank, characterized in that: include: The water supply pipe of the heat pump system is connected to the first water inlet pipe of the air conditioning system and the second water inlet pipe on the secondary side of the plate heat exchanger; The return water pipe of the heat pump system is connected to the first water outlet pipe of the air conditioning system and the second water outlet pipe on the secondary side of the plate heat exchanger; The heat exchange water inlet pipe of the fire water tank is connected to the primary side water outlet pipe of the plate heat exchanger; The heat exchange outlet pipe of the fire water tank is connected to the primary side water inlet pipe of the plate heat exchanger; The heat exchange water inlet pipe is provided with a first circulating water pump; The second water outlet pipe is provided with a second circulating water pump; The first water outlet pipe is provided with a third circulating water pump.

2. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 1, characterized in that: The heat exchange water inlet pipe is connected to the upper and lower water distribution pipes of the fire water tank; The heat exchange water outlet pipe is connected to both the upper and lower water distribution pipes of the fire water tank.

3. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 1, characterized in that: The first circulating water pump, the second circulating water pump and the third circulating water pump are all connected in parallel with a spare circulating water pump.

4. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 1, characterized in that: A first reversing water pipe and a second reversing water pipe are arranged between the second water inlet pipe and the second water outlet pipe; The first reversing water pipe is connected to the first water inlet pipe at point A, and the first reversing water pipe is connected to the first water outlet pipe at point B; The second reversing water pipe is connected to the first water inlet pipe at point C, and the second reversing water pipe is connected to the first water outlet pipe at point D; Among them, point A is above point C, and point D is below point B.

5. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 1, characterized in that: A dirt remover is provided at the first water outlet pipe of the air conditioning system.

6. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 4, characterized in that: A first valve is provided at the water supply pipe of the heat pump system; A second valve is provided at the first water inlet pipe of the air conditioning system; A third valve is provided at the first water outlet pipe of the air conditioning system; A fourth valve is provided at the return pipe of the heat pump system; A fifth valve is provided at the second water inlet pipe; A sixth valve is provided between point A and point C; A seventh valve is provided between point B and point D; An eighth valve is provided at the second water outlet pipe; A ninth valve is provided on the first reversing water pipe; A tenth valve is provided on the second reversing water pipe; A fourteenth valve is provided at the connection between the heat exchange water inlet pipe and the upper water distribution pipe; An eleventh valve is provided at the connection between the heat exchange water outlet pipe and the upper water distribution pipe; A twelfth valve is provided at the connection between the heat exchange water inlet pipe and the lower water distribution pipe; A thirteenth valve is provided at the connection between the heat exchange water outlet pipe and the lower water distribution pipe.

7. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 6, characterized in that: When the heat pump system provides cooling alone during the non-peak electricity period in summer, the first valve, the second valve, the third valve and the fourth valve are opened, and the fifth valve, the sixth valve, the seventh valve, the eighth valve, the ninth valve, the tenth valve, the eleventh valve, the twelfth valve, the thirteenth valve and the fourteenth valve are closed.

8. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 6, characterized in that: When the fire water tank provides cooling alone during the non-peak electricity period in summer, the second valve, the third valve, the fifth valve, the eighth valve, the ninth valve, the tenth valve, the thirteenth valve and the fourteenth valve are opened, and the first valve, the fourth valve, the sixth valve, the seventh valve, the eleventh valve and the twelfth valve are closed.

9. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 6, characterized in that: When the heat pump system and the fire water tank jointly provide cooling during the non-off-peak electricity period in summer, the first valve, the second valve, the third valve, and the fourth valve are opened, the fifth valve, the eighth valve, the ninth valve, the tenth valve, the thirteenth valve, and the fourteenth valve are opened, and the sixth valve, the seventh valve, the eleventh valve, and the twelfth valve are closed.

10. The energy storage air conditioning system using a plate heat exchanger connected to a fire water tank according to claim 6, characterized in that: When the heat pump system is storing cold during the off-peak period in summer, the first valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve, the eleventh valve, and the twelfth valve are opened, and the second valve, the third valve, the ninth valve, the tenth valve, the thirteenth valve, and the fourteenth valve are closed; When the heat pump system provides heating alone in winter, the first valve, the second valve, the third valve and the fourth valve are opened, and the fifth valve, the sixth valve, the seventh valve, the eighth valve, the ninth valve, the tenth valve, the eleventh valve, the twelfth valve, the thirteenth valve and the fourteenth valve are closed.

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