Heat pump system
By setting a first four-way valve and flow control components in the heat pump system to change the refrigerant flow direction, the problem of poor heat exchange effect caused by the different heat exchange methods of refrigerant and water in the prior art is solved, and counter-current heat exchange is realized in heating and cooling modes, thereby improving the overall heat exchange effect of the heat pump system.
Patent Information
- Application Number
- CN202422911790.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing heat pump systems use different heat exchange methods between the refrigerant and water in heating and cooling modes, resulting in poor heat exchange performance and an inability to achieve counter-current heat exchange.
By setting a first four-way valve and flow control components, the direction of refrigerant flow is changed so that it is always opposite to the direction of water flow in the water pipe, ensuring that counter-current heat exchange can be achieved in both heating and cooling modes.
It improves the heat exchange efficiency of water-fluorine heat exchangers and heat pump systems, ensuring efficient heat transfer in different modes.
Smart Images
Figure CN223512281U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat pump technical field, especially a kind of heat pump system. BACKGROUND
[0002] Heat pump system is a kind of equipment that can utilize the heat energy in natural air to heat or refrigerate.Water-fluoride heat exchanger is a kind of equipment that utilizes heat exchange between refrigerant and water, and its working principle is based on heat conduction principle.When water flows through heat exchanger, it exchanges heat with refrigerant, so as to realize the purpose of water cooling or heating.In prior art, when heat pump system is in heating mode, refrigerant and water in water-fluoride heat exchanger are counter-current heat exchange.Because the flow direction of waterway in user's home is constant, when heat pump system is in refrigeration mode, the flow direction of refrigerant in water-fluoride heat exchanger must be changed, so that refrigerant and water must be co-current heat exchange, that is, heat pump system cannot realize counter-current heat exchange in both heating and refrigeration mode, which reduces the heat exchange effect of heat pump system. SUMMARY
[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides a kind of heat pump system, which can improve the heat exchange effect of heat pump system.
[0004] According to the heat pump system of the utility model embodiment, it comprises compressor, water-fluoride heat exchanger and outdoor heat exchanger;The water-fluoride heat exchanger includes waterway pipe and fluoride heat exchange pipe, the waterway pipe is used for water flow, the compressor, the fluoride heat exchange pipe and the outdoor heat exchanger form the loop for refrigerant flow, so that the refrigerant in the fluoride heat exchange pipe can exchange heat with water in the waterway pipe;First four-way valve, the first four-way valve is used to change the flow direction of the refrigerant, so that the refrigerant flowing out from the exhaust end of the compressor can flow through the fluoride heat exchange pipe first and then flow through the outdoor heat exchanger, or the refrigerant flowing out from the exhaust end of the compressor can flow through the outdoor heat exchanger first and then flow through the fluoride heat exchange pipe;Flow direction control piece, the flow direction control piece is used to keep the flow direction of the refrigerant in the fluoride heat exchange pipe opposite to the flow direction of water in the waterway pipe.
[0005] At least has the following beneficial effects:
[0006] The water route pipe in the water-fluorine heat exchanger is connected with the water route system installed in the user's house, so the flow direction of water in the water route pipe is constant, the flow direction control member can control the flow direction of the refrigerant in the fluorine heat exchange pipe, so that the heat pump system can make the flow direction of the refrigerant in the fluorine heat exchange pipe opposite to the flow direction of water in the water route pipe, that is, the refrigerant in the fluorine heat exchange pipe and the water in the water route pipe can always keep counter-flow heat exchange, so that the heat pump system can realize counter-flow heat exchange in heating and cooling, improve the heat exchange effect of the water-fluorine heat exchanger, and further improve the heat exchange effect of the heat pump system.
[0007] According to the heat pump system, the first four-way valve has a C1 interface, a S1 interface, an E1 interface and a D1 interface, the exhaust end of the compressor is communicated with the D1 interface, the suction pipe of the compressor is communicated with the S1 interface, the E1 interface is communicated with the fluorine heat exchange pipe, the C1 interface is communicated with the outdoor heat exchanger, the outdoor heat exchanger is communicated with the fluorine heat exchange pipe, the D1 interface can be communicated with the E1 interface, and the C1 interface can be communicated with the S1 interface, so that the refrigerant flowing out of the exhaust end of the compressor first flows through the fluorine heat exchange pipe and then flows through the outdoor heat exchanger, the D1 interface can be communicated with the C1 interface, and the E1 interface can be communicated with the S1 interface, so that the refrigerant flowing out of the exhaust end of the compressor first flows through the outdoor heat exchanger and then flows through the fluorine heat exchange pipe.
[0008] According to the heat pump system, the flow direction control member is a second four-way valve, the C1 interface is communicated with two ends of the outdoor heat exchanger, the second four-way valve has a C2 interface, a S2 interface, an E2 interface and a D2 interface, the D2 interface is communicated with the E1 interface, the S2 interface is communicated with the first end of the outdoor heat exchanger, the E2 interface is communicated with the second end of the fluorine heat exchange pipe, the C2 interface is communicated with the first end of the fluorine heat exchange pipe, the D2 interface can be communicated with the E2 interface, and the C2 interface can be communicated with the S2 interface, so that the refrigerant flows from the second end of the fluorine heat exchange pipe to the first end of the fluorine heat exchange pipe, the D2 interface can be communicated with the C2 interface, and the E2 interface can be communicated with the S2 interface, so that the refrigerant flows from the second end of the fluorine heat exchange pipe to the first end of the fluorine heat exchange pipe.
[0009] According to the heat pump system, the S2 interface is communicated with the first end of the outdoor heat exchanger through the throttling element.
[0010] According to the heat pump system of the embodiment of the present application, the first four-way valve comprises a first main valve, the first main valve has a C1 interface, a S1 interface, an E1 interface and a D1 interface, the exhaust end of the compressor is communicated with the D1 interface, the suction pipe of the compressor is communicated with the S1 interface, the E1 interface is communicated with the fluorine heat exchange pipe, the C1 interface is communicated with the outdoor heat exchanger, the outdoor heat exchanger is communicated with the fluorine heat exchange pipe, the D1 interface can be communicated with the E1 interface, the C1 interface can be communicated with the S1 interface, so that the refrigerant flowing out of the exhaust end of the compressor first flows through the fluorine heat exchange pipe and then flows through the outdoor heat exchanger, the D1 interface can be communicated with the C1 interface, the E1 interface can be communicated with the S1 interface, so that the refrigerant flowing out of the exhaust end of the compressor first flows through the outdoor heat exchanger and then flows through the fluorine heat exchange pipe.
[0011] According to the heat pump system of the embodiment of the present application, the first four-way valve further comprises a pilot valve, an electromagnetic coil and a first main valve, the electromagnetic coil is arranged on the pilot valve, the first main valve is provided with a first port and a second port at two ends respectively, the pilot valve has a C3 interface, a S3 interface, an E3 interface and a D3 interface, the D3 interface is communicated with the exhaust end of the compressor, the S3 interface is communicated with the suction end of the compressor, the E3 interface is communicated with the first port, the C3 interface is communicated with the second port, the electromagnetic coil can be in a power-off state, so that the D3 interface is communicated with the E3 interface, the S3 interface is communicated with the C3 interface, and the D1 interface is communicated with the E1 interface, and the C1 interface is communicated with the S1 interface, the electromagnetic coil can be in a power-on state, so that the D3 interface is communicated with the C3 interface, the E3 interface is communicated with the S3 interface, and the D1 interface is communicated with the C1 interface, and the E1 interface is communicated with the S1 interface.
[0012] The heat pump system according to the embodiment of the present application, the flow direction control member is a second main valve, the C1 interface is communicated with the second end of the outdoor heat exchanger, the second main valve has a C2 interface, an S2 interface, an E2 interface and a D2 interface, two ends of the second main valve are respectively provided with a third port and a fourth port, the D2 interface is communicated with the E1 interface, the S2 interface is communicated with the first end of the outdoor heat exchanger, the E2 interface is communicated with the second end of the fluorine heat exchange pipe, the C2 interface is communicated with the first end of the fluorine heat exchange pipe, the third port is communicated with the E3 interface, the fourth port is communicated with the C3 interface, the electromagnetic coil can be in a power-off state, so that the D2 interface is communicated with the E2 interface, the S2 interface is communicated with the C2 interface, and the refrigerant flows from the second end of the fluorine heat exchange pipe to the first end of the fluorine heat exchange pipe; the electromagnetic coil can be in a power-on state, so that the D2 interface is communicated with the C2 interface, the E2 interface is communicated with the S2 interface, and the refrigerant flows from the second end of the fluorine heat exchange pipe to the first end of the fluorine heat exchange pipe.
[0013] The heat pump system according to the embodiment of the present application further comprises a throttling element, and the S2 interface is communicated with the first end of the outdoor heat exchanger through the throttling element.
[0014] The heat pump system according to the embodiment of the present application, the outdoor heat exchanger is a wind-cooled heat exchanger.
[0015] Additional aspects and advantages of the present application will be described in the following description, some of which will become apparent to those skilled in the art from the following description. BRIEF DESCRIPTION OF DRAWINGS
[0016] The present application will be further described below in conjunction with the drawings and embodiments, wherein:
[0017] Figure 1 It is a refrigerant flow schematic diagram of a traditional heat pump system in a heating mode;
[0018] Figure 2 It is a refrigerant flow schematic diagram of a traditional heat pump system in a cooling mode;
[0019] Figure 3 It is a refrigerant flow schematic diagram of a heat pump system of the first embodiment of the present application in a heating mode;
[0020] Figure 4 It is a refrigerant flow schematic diagram of a heat pump system of the first embodiment of the present application in a cooling mode;
[0021] Figure 5 It is a structural schematic diagram of a first main valve, a second main valve and a pilot valve in a heat pump system of the second embodiment of the present application.
[0022] Figure 6 The refrigerant flow schematic diagram of the heat pump system of the second embodiment of the present application in the heating mode;
[0023] Figure 7 The refrigerant flow schematic diagram of the heat pump system of the second embodiment of the present application in the cooling mode;
[0024] Reference signs:
[0025] First four-way valve 100; first main valve 110; first port 111; second port 112;
[0026] Second four-way valve 200; second main valve 210; third port 211; fourth port 212;
[0027] Pilot valve 300; electromagnetic coil 310;
[0028] Compressor 400;
[0029] Water-fluorine heat exchanger 500; water path pipe 510; water inlet 511; water outlet 512; fluorine heat exchange pipe 520;
[0030] Outdoor heat exchanger 600;
[0031] Throttling element 700. DETAILED DESCRIPTION
[0032] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.
[0033] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0034] In the description of the present application, the plural means more than two. If there is a description of the first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0035] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood broadly, and the skilled in the art can determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.
[0036] Need to explain, reference Figure 1 And Figure 2 , the arrow in the figure is the flow direction of refrigerant. Water fluorine heat exchanger 500 includes water path pipe 510 and fluorine heat exchange pipe 520, in the utility model embodiment, reference Figure 1 , counterflow heat exchange refers to the flow direction of water in water path pipe 510 and the flow direction of refrigerant in fluorine heat exchange pipe 520 are opposite. Reference Figure 2 , the flow direction of water in water path pipe 510 and the flow direction of refrigerant in fluorine heat exchange pipe 520 are same. In the counterflow heat exchange mode, when the heat of refrigerant is transferred to water, the contact surface of them always maintains a large temperature difference, so that the heat transfer efficiency can be improved, that is, the heat exchange effect of water fluorine heat exchanger 500 and heat pump system is improved. In the flow heat exchange mode, the temperature difference between refrigerant and water gradually decreases with the flow of refrigerant and water, resulting in lower heat exchange efficiency, that is, the heat exchange effect of water fluorine heat exchanger 500 and heat pump system is reduced.
[0037] Reference Figure 3 And Figure 4 , according to the heat pump system of the utility model embodiment, including compressor 400, water fluorine heat exchanger 500, outdoor heat exchanger 600, first four-way valve 100 and flow direction control piece.
[0038] Water fluorine heat exchanger 500 includes water path pipe 510 and fluorine heat exchange pipe 520, water path pipe 510 is used for water flow, and the circuit for refrigerant flow is formed between compressor 400, fluorine heat exchange pipe 520 and outdoor heat exchanger 600, so that the refrigerant in fluorine heat exchange pipe 520 can exchange heat with water in water path pipe 510;
[0039] First four-way valve 100, first four-way valve 100 is used to change the flow direction of refrigerant, so that the refrigerant flowing out from the exhaust end of compressor 400 can flow through fluorine heat exchange pipe 520 first and then flow through outdoor heat exchanger 600, or the refrigerant flowing out from the exhaust end of compressor 400 can flow through outdoor heat exchanger 600 first and then flow through fluorine heat exchange pipe 520;
[0040] Flow direction control piece, flow direction control piece is used to make the flow direction of refrigerant in fluorine heat exchange pipe 520 and the flow direction of water in water path pipe 510 opposite.
[0041] Reference Figure 3When the heat pump system is in the heating mode, the first four-way valve 100 can be switched to the first state, so that the refrigerant flowing out of the exhaust end of the compressor 400 first flows through the fluorine heat exchange pipe 520 in the water-fluorine heat exchanger 500, then flows through the outdoor heat exchanger 600, and finally flows into the gas inlet end of the compressor 400, so as to circulate, so that the refrigerant in the fluorine heat exchange pipe 520 can transmit heat to the water in the water pipe 510, so as to complete the heating of the water in the water pipe 510.
[0042] Reference Figure 4 When the heat pump system is in the cooling mode, the first four-way valve 100 can be switched to the second state, so that the refrigerant flowing out of the exhaust end of the compressor 400 first flows through the outdoor heat exchanger 600, then flows through the fluorine heat exchange pipe 520 in the water-fluorine heat exchanger 500, and finally flows into the gas inlet end of the compressor 400, so as to circulate, so that the refrigerant in the fluorine heat exchange pipe 520 can absorb the heat of the water in the water pipe 510, so as to complete the cooling of the water in the water pipe 510.
[0043] It can be understood that the water pipe 510 in the water-fluorine heat exchanger 500 is connected with the water system installed in the user's home, so the flow direction of the water in the water pipe 510 is constant. The flow direction control piece can control the flow direction of the refrigerant in the fluorine heat exchange pipe 520, so that the heat pump system can make the flow direction of the refrigerant in the fluorine heat exchange pipe 520 opposite to the flow direction of the water in the water pipe 510, that is, the refrigerant in the fluorine heat exchange pipe 520 and the water in the water pipe 510 can always maintain counter-current heat exchange, so that the heat pump system can realize counter-current heat exchange in heating and cooling, improve the heat exchange effect of the water-fluorine heat exchanger 500, and further improve the heat exchange effect of the heat pump system.
[0044] In the embodiment of the utility model, reference Figure 3 The water pipe 510 has a water inlet 511 and a water outlet 512, the flow direction of the water in the water pipe 510 is from the water inlet 511 to the water outlet 512, and the flow direction of the water in the water pipe 510 is always constant. The fluorine heat exchange pipe 520 has a first end and a second end, the water inlet 511 of the water pipe 510 corresponds to the first end of the fluorine heat exchange pipe 520, and the water outlet 512 of the water pipe 510 corresponds to the second end of the fluorine heat exchange pipe 520, so the counter-current heat exchange refers to the flow direction of the refrigerant in the fluorine heat exchange pipe 520 being from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520. In other words, the flow direction control piece can always make the flow direction of the refrigerant in the fluorine heat exchange pipe 520 be from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520.
[0045] Reference Figure 3 And Figure 4, the first four-way valve 100 has a C1 interface, a S1 interface, an E1 interface and a D1 interface, the exhaust end of the compressor 400 communicates with the D1 interface, the suction pipe of the compressor 400 communicates with the S1 interface, the E1 interface communicates with the fluorine heat exchange pipe 520, the C1 interface communicates with the outdoor heat exchanger 600, the outdoor heat exchanger 600 communicates with the fluorine heat exchange pipe 520, the D1 interface can communicate with the E1 interface, the C1 interface can communicate with the S1 interface, so that the refrigerant flowing out of the exhaust end of the compressor 400 can flow through the fluorine heat exchange pipe 520 and then flow through the outdoor heat exchanger 600, the D1 interface can communicate with the C1 interface, the E1 interface can communicate with the S1 interface, so that the refrigerant flowing out of the exhaust end of the compressor 400 can flow through the outdoor heat exchanger 600 and then flow through the fluorine heat exchange pipe 520.
[0046] It can be understood that when the first four-way valve 100 is switched to the first state, the D1 interface communicates with the E1 interface, the C1 interface communicates with the S1 interface, the refrigerant flowing out of the exhaust end of the compressor 400 can flow into the fluorine heat exchange pipe 520 and then flow into the outdoor heat exchanger 600, so that the refrigerant releases heat in the fluorine heat exchange pipe 520 and absorbs heat in the outdoor heat exchanger 600, and further, the heat of the refrigerant in the fluorine heat exchange pipe 520 can be transmitted to the water in the water pipe 510, so as to complete the heating of the water, that is, the heat pump system is in the heating mode.
[0047] When the first four-way valve 100 is switched to the second state, the D1 interface communicates with the C1 interface, the E1 interface communicates with the S1 interface, the refrigerant flowing out of the exhaust end of the compressor 400 can flow into the outdoor heat exchanger 600 and then flow into the fluorine heat exchange pipe 520, so that the refrigerant absorbs heat in the fluorine heat exchange pipe 520 and releases heat in the outdoor heat exchanger 600, and further, the refrigerant in the fluorine heat exchange pipe 520 can absorb the heat of the water in the water pipe 510, so as to complete the refrigeration of the water, that is, the heat pump system is in the refrigeration mode.
[0048] As a first embodiment of the utility model, refer to Figure 3 and Figure 4 , the flow control member is a second four-way valve 200, the C1 interface communicates with the second end of the outdoor heat exchanger 600, the second four-way valve 200 has a C2 interface, a S2 interface, an E2 interface and a D2 interface, the D2 interface communicates with the E1 interface, the S2 interface communicates with the first end of the outdoor heat exchanger 600, the E2 interface communicates with the second end of the fluorine heat exchange pipe 520, the C2 interface communicates with the first end of the fluorine heat exchange pipe 520, the D2 interface can communicate with the E2 interface, the C2 interface can communicate with the S2 interface, so that the refrigerant flows from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520, the D2 interface can communicate with the C2 interface, the E2 interface can communicate with the S2 interface, so that the refrigerant flows from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520.
[0049] It can be understood that when the first four-way valve 100 is switched to the first state, the heat pump system is in the heating state, the D1 interface is in communication with the E1 interface, and the C1 interface is in communication with the S1 interface. At this time, the second four-way valve 200 is synchronously switched to the first state, so that the D2 interface is in communication with the E2 interface, and the C2 interface is in communication with the S2 interface. Referring to Figure 3 When the first four-way valve and the second four-way valve 200 are synchronously in the first state, the refrigerant flowing out of the exhaust end of the compressor 400 first flows into the second end of the fluorine heat exchange pipe 520 through the D1 interface, the E1 interface, the D2 interface and the E2 interface, and then flows out of the first end of the fluorine heat exchange pipe 520 and into the first end of the outdoor heat exchanger 600. At this time, the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520, and the flow direction of the water in the waterway pipe 510 is from the water inlet 511 to the water outlet 512, so that the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is opposite to the flow direction of the water in the waterway pipe 510, that is, the heat pump system can realize counterflow heat exchange in the heat exchange mode. The refrigerant in the outdoor heat exchanger 600 flows into the suction end of the compressor 400 through the second end of the outdoor heat exchanger 600, the C1 interface and the S2 interface.
[0050] When the first four-way valve 100 is switched to the second state, the heat pump system is in the refrigeration state, the D1 interface is in communication with the C1 interface, and the E1 interface is in communication with the S1 interface. At this time, the second four-way valve 200 is synchronously switched to the second state, so that the D2 interface is in communication with the C2 interface, and the E2 interface is in communication with the S2 interface. Referring to Figure 4 When the first four-way valve and the second four-way valve 200 are synchronously in the second state, the refrigerant flowing out of the exhaust end of the compressor 400 first flows into the second end of the outdoor fluorine heat exchange pipe 520 through the D1 interface and the C1 interface, and then flows out of the first end of the outdoor fluorine heat exchange pipe 520 and flows into the second end of the fluorine heat exchange pipe 520 through the S2 interface and the E2 interface. Then the refrigerant in the fluorine heat exchange pipe 520 flows out of the first end of the fluorine heat exchange pipe 520 and flows into the suction end of the compressor 400 through the C2 interface, the D2 interface, the E1 interface and the S1 interface. At this time, the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520, and the flow direction of the water in the waterway pipe 510 is from the water inlet 511 to the water outlet 512, so that the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is opposite to the flow direction of the water in the waterway pipe 510, that is, the heat pump system can realize counterflow heat exchange in the refrigeration mode.
[0051] It can be seen that, in the first embodiment of the utility model, the second four-way valve 200 can keep the flow direction of the refrigerant in the fluorine heat exchange pipe 520 unchanged in the heating mode and the cooling mode, that is, the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is always opposite to the flow direction of the water in the waterway pipe 510, so that the heat pump system can realize counter-flow heat exchange in the heating mode and the cooling mode, and the heat exchange effect of the heat pump system is improved.
[0052] In the first embodiment of the utility model, the heat pump system further comprises a throttling element 700, and the S2 interface is communicated with the first end of the outdoor heat exchanger 600 through the throttling element 700. The throttling element 700 can be a thermal expansion valve, an electronic expansion valve or a capillary tube. The throttling element 700 is a common element in the heat pump system, and will not be described further here.
[0053] In the first embodiment of the utility model, the first four-way valve 100 and the second four-way valve 200 are common valve pieces for changing the flow direction of the refrigerant in the heat exchange system, the first four-way valve 100 is used for switching the heat pump system between the heating mode and the cooling mode, and the second four-way valve 200 is used for enabling the heat pump system to always realize counter-flow heat exchange.
[0054] As the second embodiment of the utility model, referring to Figures 5 to 7 , the first four-way valve 100 comprises a pilot valve 300, an electromagnetic coil 310 and a first main valve 110, the electromagnetic coil 310 is arranged on the pilot valve 300, the first main valve 110 has a C1 interface, an S1 interface, an E1 interface and a D1 interface, two ends of the first main valve 110 are respectively provided with a first port 111 and a second port 112, the pilot valve 300 has a C3 interface, an S3 interface, an E3 interface and a D3 interface, the exhaust end of the compressor 400 is communicated with the D1 interface, the suction pipe of the compressor 400 is communicated with the S1 interface, the E1 interface is communicated with the fluorine heat exchange pipe 520, the C1 interface is communicated with the outdoor heat exchanger 600, the outdoor heat exchanger 600 is communicated with the fluorine heat exchange pipe 520, the D3 interface is communicated with the exhaust end of the compressor 400, the S3 interface is communicated with the suction end of the compressor 400, the E3 interface is communicated with the first port 111, the C3 interface is communicated with the second port 112, the electromagnetic coil 310 can be in a power-off state, so that the D3 interface is communicated with the E3 interface, the S3 interface is communicated with the C3 interface, and the D1 interface is communicated with the E1 interface, and the C1 interface is communicated with the S1 interface, the electromagnetic coil 310 can be in a power-on state, so that the D3 interface is communicated with the C3 interface, the E3 interface is communicated with the S3 interface, and the D1 interface is communicated with the C1 interface, and the E1 interface is communicated with the S1 interface.
[0055] In the second embodiment of the utility model, referring to Figure 5The pilot valve 300 is provided with a sliding cavity, a sliding block and a spring in the sliding cavity. One end of the spring is connected to one end of the inner wall of the sliding cavity, and the other end of the spring is in communication with the sliding block. The electromagnetic coil 310 is arranged on one end of the pilot valve 300 close to the E3 interface, and the electromagnetic coil 310 is electromagnetically connected with the sliding block. When the electromagnetic coil 310 is in a power-off state, the spring is in an extended state, and the sliding block moves away from the electromagnetic coil 310 under the pushing of the spring. At this time, the D3 interface is in communication with the E3 interface, and the S3 interface is in communication with the C3 interface. When the electromagnetic coil 310 is in a power-on state, the electromagnetic coil 310 magnetically attracts the sliding block, so that the sliding block slides towards the electromagnetic coil 310, and the spring is compressed. At this time, the D3 interface is in communication with the C3 interface, and the E3 interface is in communication with the S3 interface. The pilot valve 300 is a common auxiliary valve, and will not be described further here.
[0056] With reference to Figure 5 The first main valve 110 is provided with a first piston cavity, and the first piston cavity is provided with a first piston. Two ends of the first piston cavity are in communication with a first port 111 and a second port 112 respectively. The first port 111 is in communication with the E3 interface of the pilot valve 300, and the second port 112 is in communication with the C3 interface of the pilot valve 300. The D3 interface of the pilot valve 300 is in communication with the exhaust end of the compressor 400, and the S3 interface of the pilot valve 300 is in communication with the suction end of the compressor 400.
[0057] With reference to Figure 6 When the heat pump system is switched to the heating mode, the electromagnetic coil 310 is in a power-off state, the D3 interface is in communication with the E3 interface, and the S3 interface is in communication with the C3 interface. Since the D3 interface of the pilot valve 300 is in communication with the exhaust end of the compressor 400, and the E3 interface of the pilot valve 300 is in communication with the first port 111 on the first main valve 110, part of the high-pressure refrigerant flowing out of the exhaust end of the compressor 400 can flow into the first piston cavity through the D3 interface and the E3 interface of the pilot valve 300, so that the first piston cavity between the first piston and the first port 111 forms a high-pressure area. Since the suction end of the compressor 400 is in communication with the second port 112 on the first main valve 110 through the C3 interface and the S3 interface of the pilot valve 300, the first piston cavity between the first piston and the second port 112 forms a low-pressure area. Since the two sides of the first piston are respectively a high-pressure area and a low-pressure area, the first piston moves towards the second port 112 at this time, so that the D1 interface and the E1 interface of the first main valve 110 are in communication, and the C1 interface and the S1 interface are in communication, so that the first main valve 110 is in the first state.
[0058] When the first main valve 110 is in the first state, the refrigerant flowing out from the exhaust end of the compressor 400 flows into the fluorine heat exchange pipe 520 through the D1 interface and the E1 interface. Then the refrigerant flowing out from the fluorine heat exchange pipe 520 flows into the outdoor heat exchanger 600. Finally, the refrigerant flowing out from the outdoor heat exchanger 600 reflows into the suction end of the compressor 400 through the C1 interface and the S1 interface, and the cycle is repeated to complete the heating of the water in the water pipe 510.
[0059] Reference Figure 7 When the heat pump system is switched to the refrigeration mode, the electromagnetic coil 310 is in the energized state, the D3 interface is in communication with the C3 interface, and the E3 interface is in communication with the S3 interface. Since the D3 interface of the pilot valve 300 is in communication with the exhaust end of the compressor 400, and the C3 interface of the pilot valve 300 is in communication with the second port 112 on the first main valve 110, part of the high-pressure refrigerant flowing out from the exhaust end of the compressor 400 can flow into the first piston cavity through the D3 interface and the C3 interface of the pilot valve 300, so that the first piston cavity between the first piston and the second port 112 forms a high-pressure area. Because the suction end of the compressor 400 is in communication with the first port 111 on the first main valve 110 through the S3 interface and the E3 interface of the pilot valve 300, the first piston cavity between the first piston and the first port 111 forms a low-pressure area. Since the two sides of the second piston are a low-pressure area and a high-pressure area respectively, the first piston moves towards the first port 111 at this time, so that the D1 interface and the C1 interface of the first main valve 110 are in communication, and the E1 interface and the S1 interface are in communication, so that the first main valve 110 is in the second state.
[0060] When the first main valve 110 is in the second state, the refrigerant flowing out from the exhaust end of the compressor 400 flows into the outdoor heat exchanger 600 through the D1 interface and the C1 interface. Then the refrigerant flowing out from the outdoor heat exchanger 600 flows into the fluorine heat exchange pipe 520. Finally, the refrigerant flowing out from the fluorine heat exchange pipe 520 reflows into the suction end of the compressor 400 through the E1 interface and the S1 interface, and the cycle is repeated to complete the refrigeration of the water in the water pipe 510.
[0061] In order to enable the heat pump system to switch back and forth between the refrigeration mode and the heating mode, and also in order to enable the heat pump system to always maintain the counterflow heat exchange, the heat pump system needs to be provided with two four-way valves. Since one four-way valve includes a pilot valve 300 and a main valve, the heat pump system needs to be provided with at least four valves to realize the counterflow heat exchange and the mode switching of the heat pump system. The more the number of valves, the higher the manufacturing cost of the heat pump system, so the manufacturing cost of the heat pump system capable of realizing the counterflow heat exchange and the mode switching is high.
[0062] In the second embodiment of the utility model, reference 5 to Figure 7, the flow control member is a second main valve 210, the C1 interface communicates with the second end of the outdoor heat exchanger 600, the second main valve 210 has a C2 interface, an S2 interface, an E2 interface and a D2 interface, two ends of the second main valve 210 are respectively provided with a third port 211 and a fourth port 212, the D2 interface communicates with the E1 interface, the S2 interface communicates with the first end of the outdoor heat exchanger 600, the E2 interface communicates with the second end of the fluorine heat exchange pipe 520, the C2 interface communicates with the first end of the fluorine heat exchange pipe 520, the third port 211 communicates with the E3 interface, the fourth port 212 communicates with the C3 interface, the electromagnetic coil 310 can be in a power-off state, so that the D2 interface communicates with the E2 interface, the S2 interface communicates with the C2 interface, and the refrigerant flows from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520, and the electromagnetic coil 310 can be in a power-on state, so that the D2 interface communicates with the C2 interface, the E2 interface communicates with the S2 interface, and the refrigerant flows from the second end of the fluorine heat exchange pipe 520 to the first end of the fluorine heat exchange pipe 520.
[0063] In the second embodiment of the utility model, reference Figure 6 , the second main valve 210 is formed with a second piston cavity, a second piston is arranged in the second piston cavity, and two ends of the second piston cavity communicate with the third port 211 and the fourth port 212 respectively, the third port 211 communicates with the E3 interface of the pilot valve 300, the fourth port 212 communicates with the C3 interface of the pilot valve 300, the D3 interface of the pilot valve 300 communicates with the exhaust end of the compressor 400, and the S3 interface of the pilot valve 300 communicates with the suction end of the compressor 400.
[0064] Reference Figure 6 When the heat pump system is switched to the heating mode, the electromagnetic coil 310 is in a power-off state, at this time, the D3 interface communicates with the E3 interface, and the S3 interface communicates with the C3 interface. Since the D3 interface of the pilot valve 300 communicates with the exhaust end of the compressor 400, and the E3 interface of the pilot valve 300 simultaneously communicates with the first port 111 on the first main valve 110 and the third port 211 on the second main valve 210, part of the high-pressure refrigerant flowing out from the exhaust end of the compressor 400 can be branched to the first port 111 on the first main valve 110 and the third port 211 on the second main valve 210 through the D3 interface and the E3 interface of the pilot valve 300, so that the first piston cavity between the first piston and the first port 111 forms a high-pressure area, and the second piston cavity between the second piston and the third port 211 forms a high-pressure area.
[0065] Because the suction end of the compressor 400 is connected to the second port 112 of the first main valve 110 and the fourth port 212 of the second main valve 210 through the C3 interface and the S3 interface of the pilot valve 300, the first piston cavity between the first piston and the second port 112 forms a low pressure area, and the second piston cavity between the second piston and the fourth port 212 forms a low pressure area. At this time, the first piston moves towards the second port 112, and the second piston moves towards the fourth port 212, so that the D1 interface and the E1 interface of the first main valve 110 are connected, and the C1 interface and the S1 interface are connected, so that the first main valve 110 is in the first state, and at the same time, the D2 interface and the E2 interface of the first main valve 110 are connected, and the C2 interface and the S2 interface are connected, so that the second main valve 210 is in the first state.
[0066] After the first main valve 110 is in the first state and the second main valve 210 is in the first state, the refrigerant flowing out of the discharge end of the compressor 400 flows into the second end of the fluorine heat exchange pipe 520 through the D1 interface, the E1 interface, the D2 interface and the E2 interface. Then the refrigerant flow in the fluorine heat exchange pipe 520 flows out of the first end of the fluorine heat exchange pipe 520 and flows into the first end of the outdoor heat exchanger 600 through the C2 interface and the S2 interface, so that the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is opposite to the flow direction of the water in the water pipe 510. Finally, the refrigerant in the outdoor heat exchanger 600 flows out of the second end of the outdoor heat exchanger 600 and flows into the suction end of the compressor 400 through the C1 interface and the S1 interface, so that the heat pump system can be circulated and reversed, so that the heat pump system can be in the reverse flow heat exchange while switching to the heating mode.
[0067] Reference Figure 7 When the heat pump system switches to the cooling mode, the electromagnetic coil 310 is in the energized state, and at this time, the D3 interface and the C3 interface are connected, and the E3 interface and the S3 interface are connected. Because the D3 interface of the pilot valve 300 is connected to the discharge end of the compressor 400, and the C3 interface of the pilot valve 300 is connected to the second port 112 of the first main valve 110 and the fourth port 212 of the second main valve 210, part of the high-pressure refrigerant flowing out of the discharge end of the compressor 400 can be divided into the second port 112 of the first main valve 110 and the fourth port 212 of the second main valve 210 through the D3 interface and the C3 interface of the pilot valve 300, so that the first piston cavity between the first piston and the second port 112 forms a high pressure area, and the second piston cavity between the second piston and the fourth port 212 forms a high pressure area.
[0068] Because the suction end of the compressor 400 is communicated with the first port 111 on the first main valve 110 and the third port 211 on the second main valve 210 through the S3 interface and the E3 interface of the pilot valve 300, the first piston cavity between the first piston and the first port 111 forms a low pressure area, and the second piston cavity between the second piston and the third port 211 forms a low pressure area. At this time, the first piston moves towards the first port 111, and the second piston moves towards the third port 211, so that the D1 interface and the C1 interface of the first main valve 110 are communicated, and the E1 interface and the S1 interface are communicated, so that the first main valve 110 is in the second state, and at the same time, the D2 interface and the C2 interface of the second main valve 210 are communicated, and the E2 interface and the S2 interface are communicated, so that the second main valve 210 is in the second state.
[0069] When the first main valve 110 is in the second state and the second main valve 210 is in the second state, the refrigerant flowing out of the exhaust end of the compressor 400 flows into the second end of the outdoor heat exchanger 600 through the D1 interface and the C1 interface. Then the refrigerant flow in the outdoor heat exchanger 600 flows out of the first end of the outdoor heat exchanger 600 and flows into the second end of the fluorine heat exchange pipe 520 through the S2 interface and the E2 interface, and the refrigerant in the fluorine heat exchange pipe 520 flows out of the first end of the fluorine heat exchange pipe 520, so that the flow direction of the refrigerant in the fluorine heat exchange pipe 520 is opposite to the flow direction of the water in the waterway pipe 510. Finally, the refrigerant flowing out of the first end of the fluorine heat exchange pipe 520 flows into the suction end of the compressor 400 through the C2 interface, the D2 interface, the E1 interface and the S1 interface, so that the heat pump system can be circulated and reciprocated, so that the heat pump system can be in the reverse flow heat exchange while switching to the cooling mode.
[0070] It can be seen that in the second embodiment of the utility model, by setting three valves, namely the first main valve 110, the second main valve 210 and the pilot valve 300, the heat pump system can realize the switching of the heating and cooling modes and ensure that the heat pump system can be in the reverse flow heat exchange at the same time. The heat pump system can realize the reverse flow heat exchange and mode switching while reducing the number of valves, thereby being beneficial to reducing the manufacturing cost of the heat pump system.
[0071] In the second embodiment of the utility model, the heat pump system further comprises a throttling element 700, and the S2 interface is communicated with the first end of the outdoor heat exchanger 600 through the throttling element 700. The throttling element 700 can be a thermal expansion valve, an electronic expansion valve or a capillary tube. The throttling element 700 is a common element in the heat pump system, which will not be further described here.
[0072] As an embodiment of the utility model, the outdoor heat exchanger 600 is a wind-cooled heat exchanger. The outdoor heat exchanger 600 can also be a double-pipe heat exchanger, a finned heat exchanger and a plate heat exchanger, etc., which will not be further described here.
[0073] In the embodiment of the present application, the heat pump system is applied to the central floor heating air conditioning system, which is a system integrating refrigeration, heating and domestic hot water supply, and will not be further described herein.
[0074] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.
[0075] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.
Claims
1. A heat pump system, characterized in that, include: Compressor (400), water-fluorine heat exchanger (500), and outdoor heat exchanger (600); The water-fluorine heat exchanger (500) includes a water pipe (510) and a fluorine heat exchange pipe (520). The water pipe (510) is used for water flow. A circuit for refrigerant flow is formed between the compressor (400), the fluorine heat exchange pipe (520) and the outdoor heat exchanger (600) so that the refrigerant in the fluorine heat exchange pipe (520) can exchange heat with the water in the water pipe (510). A first four-way valve (100) is provided on the circuit. The first four-way valve (100) is used to change the flow direction of the refrigerant so that the refrigerant flowing out from the discharge end of the compressor (400) can flow through the fluorine heat exchange tube (520) and the outdoor heat exchanger (600) in sequence, or so that the refrigerant flowing out from the discharge end of the compressor (400) can flow through the outdoor heat exchanger (600) and the fluorine heat exchange tube (520) in sequence. A flow control element is provided on the circuit, and the flow control element is used to keep the flow direction of the refrigerant in the fluorine heat exchange tube (520) opposite to the flow direction of the water in the water pipe (510).
2. The heat pump system according to claim 1, characterized in that: The first four-way valve (100) has a C1 port, an S1 port, an E1 port, and a D1 port. The discharge end of the compressor (400) is connected to the D1 port, the suction pipe of the compressor (400) is connected to the S1 port, the E1 port is connected to the fluorine heat exchange pipe (520), the C1 port is connected to the outdoor heat exchanger (600), the outdoor heat exchanger (600) is connected to the fluorine heat exchange pipe (520), and the D1 port can connect to the E1 port. The interfaces are connected, and the C1 interface can be connected to the S1 interface so that the refrigerant flowing out from the exhaust end of the compressor (400) first flows through the fluorine heat exchange tube (520) and then flows through the outdoor heat exchanger (600). The D1 interface can be connected to the C1 interface, and the E1 interface can be connected to the S1 interface so that the refrigerant flowing out from the exhaust end of the compressor (400) first flows through the outdoor heat exchanger (600) and then flows through the fluorine heat exchange tube (520).
3. The heat pump system according to claim 2, characterized in that: The flow control component is a second four-way valve (200). The C1 port is connected to both ends of the outdoor heat exchanger (600). The second four-way valve (200) has a C2 port, an S2 port, an E2 port, and a D2 port. The D2 port is connected to the E1 port, the S2 port is connected to the first end of the outdoor heat exchanger (600), the E2 port is connected to the second end of the fluorine heat exchange tube (520), the C2 port is connected to the first end of the fluorine heat exchange tube (520), the D2 port can be connected to the E2 port, and the C2 port can be connected to the S2 port, so that the refrigerant flows from the second end of the fluorine heat exchange tube (520) to the first end of the fluorine heat exchange tube (520). The D2 port can be connected to the C2 port, and the E2 port can be connected to the S2 port, so that the refrigerant flows from the second end of the fluorine heat exchange tube (520) to the first end of the fluorine heat exchange tube (520).
4. The heat pump system according to claim 3, characterized in that: It also includes a throttling element (700), through which the S2 interface is connected to the first end of the outdoor heat exchanger (600).
5. The heat pump system according to claim 1, characterized in that: The first four-way valve (100) includes a first main valve (110), which has a C1 port, an S1 port, an E1 port, and a D1 port. The discharge end of the compressor (400) is connected to the D1 port, the suction pipe of the compressor (400) is connected to the S1 port, the E1 port is connected to the fluorine heat exchange pipe (520), the C1 port is connected to the outdoor heat exchanger (600), and the outdoor heat exchanger (600) is connected to the fluorine heat exchange pipe (520). The D1 interface can be connected to the E1 interface, and the C1 interface can be connected to the S1 interface, so that the refrigerant flowing out from the exhaust end of the compressor (400) first flows through the fluorine heat exchange tube (520) and then flows through the outdoor heat exchanger (600). The D1 interface can be connected to the C1 interface, and the E1 interface can be connected to the S1 interface, so that the refrigerant flowing out from the exhaust end of the compressor (400) first flows through the outdoor heat exchanger (600) and then flows through the fluorine heat exchange tube (520).
6. The heat pump system according to claim 5, characterized in that: The first four-way valve (100) further includes a pilot valve (300), an electromagnetic coil (310), and a first main valve (110). The electromagnetic coil (310) is disposed on the pilot valve (300). The first main valve (110) has a first port (111) and a second port (112) at its two ends. The pilot valve (300) has a C3 interface, an S3 interface, an E3 interface, and a D3 interface. The D3 interface is connected to the discharge end of the compressor (400), the S3 interface is connected to the suction end of the compressor (400), and the E3 interface is connected to the first port (111). 11) Connected, the C3 interface is connected to the second port (112), the electromagnetic coil (310) can be in a de-energized state, so that the D3 interface is connected to the E3 interface, the S3 interface is connected to the C3 interface, and the D1 interface is connected to the E1 interface, the C1 interface is connected to the S1 interface, the electromagnetic coil (310) can be in a energized state, so that the D3 interface is connected to the C3 interface, the E3 interface is connected to the S3 interface, and the D1 interface is connected to the C1 interface, the E1 interface is connected to the S1 interface.
7. The heat pump system according to claim 6, characterized in that: The flow control component is a second main valve (210). The C1 interface is connected to the second end of the outdoor heat exchanger (600). The second main valve (210) has a C2 interface, an S2 interface, an E2 interface, and a D2 interface. The two ends of the second main valve (210) are respectively provided with a third port (211) and a fourth port (212). The D2 interface is connected to the E1 interface, the S2 interface is connected to the first end of the outdoor heat exchanger (600), the E2 interface is connected to the second end of the fluorine heat exchange tube (520), and the C2 interface is connected to the first end of the fluorine heat exchange tube (520). The third port (211)... The fourth port (212) is connected to the C3 interface, and the electromagnetic coil (310) is in a de-energized state so that the D2 interface is connected to the E2 interface, the S2 interface is connected to the C2 interface, and the refrigerant flows from the second end of the fluorine heat exchange tube (520) to the first end of the fluorine heat exchange tube (520). The electromagnetic coil (310) is in a energized state so that the D2 interface is connected to the C2 interface, the E2 interface is connected to the S2 interface, and the refrigerant flows from the second end of the fluorine heat exchange tube (520) to the first end of the fluorine heat exchange tube (520).
8. The heat pump system according to claim 7, characterized in that: It also includes a throttling element (700), through which the S2 interface is connected to the first end of the outdoor heat exchanger (600).
9. The heat pump system according to claim 1, characterized in that: The outdoor heat exchanger (600) is an air-cooled heat exchanger.