Multifunctional heat pump system

Abstract

The utility model discloses a multifunctional heat pump system which comprises a compressor, a four-way valve, a water heating heat exchanger, a water refrigerating heat exchanger and an evaporator, and four connectors of the four-way valve are connected with an exhaust port of the compressor, one end of the evaporator, one end of a refrigerant flow path of the water heating heat exchanger and an air return port of the compressor respectively. The other end of the refrigerant flow path of the heating water heat exchanger is connected with one end of the refrigerant flow path of the refrigeration water heat exchanger and the other end of the evaporator. The other end of the evaporator is in one-way connection with one end of the refrigerant flow path of the refrigeration water heat exchanger through a preset first one-way valve. The other end of the refrigerant flow path of the refrigeration water heat exchanger is connected with an exhaust port of the compressor; a preset external water source flows through a heat exchange water path of the hot water producing heat exchanger to absorb heat and produce hot water; and a preset external water source flows through a heat exchange water path of the refrigeration water heat exchanger to release refrigeration water.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump systems, in particular to a multifunctional heat pump system. Background Art

[0002] Currently, air-source heat pumps on the market offer relatively limited functionality, mostly providing either heating or cooling. Even cooling units cannot provide both hot and cold water simultaneously. When heating, the unit utilizes only heat, leaving no cooling capacity, which is wasted; when cooling, the unit utilizes only cooling capacity, wasting heat. When users require both hot and cold water, they are often forced to choose between them. Furthermore, the heating function of heat pumps on the market is relatively simple. Most existing hot water systems utilize a water tank for circulating heat until the set temperature is reached. This can lead to a situation where the user urgently needs hot water, but the tank has not yet reached the set temperature, resulting in a lack of hot water. Therefore, heat pumps with multiple functions have broad application areas and market potential. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a multifunctional heat pump system with rich functions.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a multifunctional heat pump system, including a compressor, a four-way valve, a hot water heat exchanger, a cooling water heat exchanger and an evaporator. The four interfaces of the four-way valve are respectively connected to the exhaust port of the compressor, one end of the evaporator, one end of the refrigerant flow path of the hot water heat exchanger and the return air port of the compressor. The other end of the refrigerant flow path of the hot water heat exchanger is respectively connected to one end of the refrigerant flow path of the cooling water heat exchanger and the other end of the evaporator. The other end of the evaporator is unidirectionally connected to one end of the refrigerant flow path of the cooling water heat exchanger through a preset first one-way valve; the other end of the refrigerant flow path of the cooling water heat exchanger is connected to the exhaust port of the compressor; a preset external water source flows through the hot water heat exchanger water exchange circuit to absorb heat to make hot water; a preset external water source flows through the cooling water heat exchanger water exchange circuit to release heat to cool water.

[0005] Furthermore, it also includes a water storage tank, the return water port and the water outlet of the water storage tank are respectively connected to the two ends of the hot water exchange circuit of the hot water heat exchanger.

[0006] Furthermore, a first expansion valve is provided between the refrigerant flow path of the hot water heat exchanger and the evaporator.

[0007] Furthermore, a second one-way valve is provided between the refrigerant flow path of the hot water heat exchanger and the refrigerant flow path of the cooling water heat exchanger.

[0008] Furthermore, a third one-way valve is provided between the refrigerant flow path of the refrigerated water heat exchanger and the exhaust port of the compressor.

[0009] Furthermore, a fourth one-way valve is provided between the four-way valve and the air return port of the compressor.

[0010] Furthermore, a second expansion valve is provided at the refrigerant flow path port of the refrigerated water heat exchanger, and the other end of the evaporator and the other end of the refrigerant flow path of the hot water heat exchanger are connected to the refrigerant flow path of the refrigerated water heat exchanger through the second expansion valve.

[0011] Furthermore, it also includes a three-way valve and a solenoid valve. The three interfaces of the three-way valve are respectively connected to one end of the hot water exchange circuit of the hot water heat exchanger, the water outlet of the water tank and the use side outlet. The two ends of the solenoid valve are bypass-connected between the water outlet of the water tank and the use side outlet.

[0012] The present invention adopts the above-mentioned solution, and its beneficial effects are as follows: the heat pump system of the present application realizes multiple cooling and heating modes, fully meeting the needs of users in various application locations. Compared with traditional heat pump units on the market, it has multiple usage modes, including independent heating, independent cooling, simultaneous heating and cooling, direct heating, and circulating heating. For users, hot water can be produced in winter, cold water can be used in summer, or hot and cold water can be used simultaneously. This has obvious advantages for locations with limited installation space or where both hot and cold water are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a connection diagram of the heat pump system.

[0014] Among them, 1- compressor, 2- four-way valve, 3- hot water heat exchanger, 4- cooling water heat exchanger, 5- evaporator, 6- first one-way valve, 7- first expansion valve, 8- second one-way valve, 9- third one-way valve, 10- fourth one-way valve, 11- water tank, 12- water pump, 13- three-way valve, 14- second expansion valve, 15- solenoid valve. DETAILED DESCRIPTION

[0015] To facilitate understanding of the present invention, a more comprehensive description of the present invention is provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided solely to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0016] See attached Figure 1 As shown, in this embodiment, a multifunctional heat pump system includes a compressor 1, a four-way valve 2, a hot water heat exchanger 3, a cooling water heat exchanger 4 and an evaporator 5, wherein the heat pump system is divided into two parts: a fluorine circuit and a water circuit. The fluorine circuit serves as a refrigerant flow path, and the water circuit serves as an external water source flow path. The fluorine circuit and the water circuit perform heat exchange treatment at the hot water heat exchanger 3 and the cooling water heat exchanger 4 respectively to achieve the effects of cooling water and heating water.

[0017] For the convenience of explanation, the four interfaces of the four-way valve 2 of this embodiment are defined as interface a, interface b, interface c, and interface d.

[0018] In this embodiment, the connection composition of the fluorine circuit is as follows: the four interfaces of the four-way valve 2, namely, interface a, interface b, interface c, and interface d, are respectively connected to the exhaust port of the compressor 1, one end of the evaporator 5, one end of the refrigerant flow path of the hot water heat exchanger 3, and the return air port of the compressor 1; the other end of the refrigerant flow path of the hot water heat exchanger 3 is respectively connected to one end of the refrigerant flow path of the cooling water heat exchanger 4 and the other end of the evaporator 5; the other end of the evaporator 5 is unidirectionally connected to one end of the refrigerant flow path of the cooling water heat exchanger 4 through a preset first one-way valve 6; the other end of the refrigerant flow path of the cooling water heat exchanger 4 is connected to the exhaust port of the compressor 1.

[0019] Furthermore, a second expansion valve 14 is provided between the refrigerant flow path of the hot water heat exchanger 3 and the evaporator 5 in this embodiment.

[0020] Furthermore, a second expansion valve 14 is provided at the refrigerant flow path port of the refrigerated water heat exchanger 4 , and the other end of the evaporator 5 and the other end of the refrigerant flow path of the hot water heat exchanger 3 are connected to the refrigerant flow path of the refrigerated water heat exchanger 4 through the second expansion valve 14 .

[0021] Furthermore, a second one-way valve 8 is provided between the refrigerant flow path of the hot water heat exchanger 3 and the refrigerant flow path of the cooling water heat exchanger 4, so that the refrigerant flows from the refrigerant flow path of the hot water heat exchanger 3 into the refrigerant flow path of the cooling water heat exchanger 4 in a one-way direction, preventing the refrigerant from flowing back.

[0022] Furthermore, a third one-way valve 9 is provided between the refrigerant flow path of the refrigerated water heat exchanger 4 and the exhaust port of the compressor 1, and a fourth one-way valve 10 is provided between the interface c of the four-way valve 2 and the return air port of the compressor 1, so that the refrigerant flows from the refrigerated water heat exchanger 4 or the four-way valve 2 into the exhaust port of the compressor 1 in a one-way direction, preventing the refrigerant from flowing back.

[0023] In this embodiment, the water circuit connection is divided into two parts: one is the hot water exchange circuit where external water flows through the hot water heat exchanger 3, and the other is the hot water exchange circuit where external water flows through the cooling water heat exchanger 4. The external water flows through the hot water heat exchanger 3 to absorb heat and produce hot water, while the external water flows through the cooling water heat exchanger 4 to release heat and produce chilled water. To improve heat exchange efficiency, the refrigerant flow path of the hot water heat exchanger 3 and the hot water exchange circuit in this embodiment have opposite flow directions.

[0024] Furthermore, to maintain the heat and store the high-temperature hot water generated by the hot water heat exchanger 3, this embodiment also includes a water tank 11. The return and outlet ports of the water tank 11 are connected to the ends of the hot water exchange circuit of the hot water heat exchanger 3. Furthermore, a water pump 12 is provided between the return port of the water tank 11 and one end of the hot water exchange circuit of the hot water heat exchanger 3. Furthermore, the water tank 11 also has a user-side outlet and a water supply port. External water can be supplied to the water tank 11 through the water supply port and, after heating, can be discharged through the user-side outlet when needed.

[0025] Furthermore, it also includes a three-way valve 13 and a solenoid valve 15. The three interfaces of the three-way valve 13 are respectively connected to one end of the hot water exchange circuit of the hot water heat exchanger 3, the water outlet of the water storage tank 11 and the user-side outlet. The two ends of the solenoid valve 15 are bypass-connected between the water outlet of the water storage tank 11 and the user-side outlet. By controlling the on-off of each interface of the three-way valve 13 and the on-off of the solenoid valve 15, the domestic hot water produced can be directly used or stored for standby.

[0026] To sum up, in order to facilitate the understanding of the above-mentioned heat pump system, the following is a further explanation in combination with specific operating modes. The heat pump system includes hot and cold mode, heating mode only, direct heating cold water mode, direct heating mode only, and cooling mode only.

[0027] When the heat pump system uses the hot and cold modes, the flow direction of the fluorine circuit is: the first expansion valve 7 is closed and the second expansion valve 14 is opened, the high-temperature and high-pressure refrigerant is discharged from the exhaust port of the compressor 1 to the interface a of the four-way valve 2, and then flows into the refrigerant flow path of the hot water heat exchanger 3 through the interface d of the four-way valve 2 to exchange heat with the external water source flowing through the hot water circuit, and then flows out from the refrigerant flow path of the hot water heat exchanger 3, and flows through the second one-way valve 8 and the second expansion valve 14 to the refrigerant flow path of the cooling water heat exchanger 4 to exchange heat with the external water source flowing through the hot water circuit, and finally flows out from the refrigerant flow path of the cooling water heat exchanger 4, and flows back to the return air port of the compressor 1 through the fourth one-way valve 10, thus circulating. Water Flow: Cold water in water storage tank 11 is pumped by water pump 12 into the hot water exchange circuit of hot water heat exchanger 3, where it absorbs heat and rises in temperature. It then flows out of the hot water exchange circuit of hot water heat exchanger 3, passes through three-way valve 13, and flows back into water storage tank 11 through the water outlet of water storage tank 11 for storage, thus circulating the water. In this mode, hot water heat exchanger 3 can produce domestic hot water through cyclic heating and store it in water storage tank 11. When a user consumes hot water, solenoid valve 15 opens, allowing the domestic hot water in water storage tank 11 to flow out through solenoid valve 15 to the user-side outlet. The cooling water heat exchanger 4 can produce cold water through cyclic heating, which can also increase the refrigerant's subcooling.

[0028] When the heat pump system is operating in heating-only mode, the flow direction of the fluorine circuit is as follows: the first expansion valve 7 is open and the second expansion valve 14 is closed. The high-temperature and high-pressure refrigerant is discharged from the exhaust port of the compressor 1 to the port a of the four-way valve 2. It then flows through the port d of the four-way valve 2 into the refrigerant flow path of the hot water heat exchanger 3 to exchange heat with the external water source flowing through the hot water exchange circuit. It then flows out of the refrigerant flow path of the hot water heat exchanger 3 and flows through the first expansion valve 7 into the evaporator 5 for heat exchange. It then flows out of the evaporator 5 to the port b of the four-way valve 2. Finally, it flows from the port c of the four-way valve 2 through the third check valve 9 back to the return port of the compressor 1, thus circulating. The flow direction of the water circuit is as follows: the cold water in the water storage tank 11 is pumped into the hot water exchange circuit of the hot water heat exchanger 3 by the water pump 12 to absorb heat and increase its temperature. It then flows out of the hot water exchange circuit of the hot water heat exchanger 3 and flows back to the water storage tank 11 through the three-way valve 13 and the water outlet of the water storage tank 11 for storage, thus circulating. In this mode, the hot water heat exchanger 3 can produce domestic hot water through circulation heating and store it in the water tank 11. When the user uses hot water, the solenoid valve 15 opens, and the domestic hot water in the water tank 11 can flow out to the user side outlet through the solenoid valve 15.

[0029] When the heat pump system uses the direct heating cold water mode, the flow direction of the fluorine circuit is: the first expansion valve 7 is closed and the second expansion valve 14 is opened, the high-temperature and high-pressure refrigerant is discharged from the exhaust port of the compressor 1 to the interface a of the four-way valve 2, and then flows into the refrigerant flow path of the hot water heat exchanger 3 through the interface d of the four-way valve 2 to exchange heat with the external water source flowing through the hot water circuit, and then flows out from the refrigerant flow path of the hot water heat exchanger 3, and flows through the second one-way valve 8 and the second expansion valve 14 to the refrigerant flow path of the cooling water heat exchanger 4 to exchange heat with the external water source flowing through the hot water circuit, and finally flows out from the refrigerant flow path of the cooling water heat exchanger 4, and flows back to the return air port of the compressor 1 through the fourth one-way valve 10, thereby circulating. Water Flow: Cold water in the water storage tank 11 is pumped by a water pump 12 into the hot water exchange circuit of the hot water heat exchanger 3, where it absorbs heat and rises in temperature. It then flows out of the hot water exchange circuit of the hot water heat exchanger 3 and flows directly to the user-side outlet through a three-way valve 13. Users can directly consume domestic hot water without having to wait for the heat pump to operate until the water storage tank 11 reaches the set temperature. The refrigerated water heat exchanger 4 produces cold water through circulating heating and increases the refrigerant's subcooling.

[0030] When the heat pump system uses the single direct heating mode, the flow direction of the fluorine circuit is: the first expansion valve 7 is opened and the second expansion valve 14 is closed, the high-temperature and high-pressure refrigerant is discharged from the exhaust port of the compressor 1 to the interface a of the four-way valve 2, and then flows into the refrigerant flow path of the hot water heat exchanger 3 through the interface d of the four-way valve 2 to exchange heat with the external water source flowing through the hot water exchange circuit, and then flows out from the refrigerant flow path of the hot water heat exchanger 3, and flows into the evaporator 5 through the first expansion valve 7 for heat exchange, and then flows out from the evaporator 5 to the interface b of the four-way valve 2, and finally flows back to the return air port of the compressor 1 through the third one-way valve 9 from the interface c of the four-way valve 2, thus circulating. Water flow direction: The cold water in the water storage tank 11 is sent to the hot water exchange circuit of the hot water heat exchanger 3 by the water pump 12 to absorb heat and increase the temperature. Then it flows out of the hot water exchange circuit of the hot water heat exchanger 3 and flows directly to the user side outlet through the three-way valve 13. The user can directly use domestic hot water without waiting for the heat pump to work until the water storage tank 11 reaches the set temperature.

[0031] When the heat pump system uses single cooling mode, the flow direction of the fluorine circuit is as follows: the high-temperature and high-pressure refrigerant is discharged from the exhaust port of compressor 1 to port a of four-way valve 2, then flows into evaporator 5 through port b of four-way valve 2 for heat exchange, then flows out of evaporator 5 and flows into chilled water heat exchanger 4 through first check valve 6 and second expansion valve 14, exchanging heat with the external water source flowing through the heat exchange circuit, and finally flows out of the refrigerant flow path of chilled water heat exchanger 4 and flows back to the return air port of compressor 1 through fourth check valve 10, thus circulating. In this mode, users can use the cold water produced by chilled water heat exchanger 4 as a fan coil unit or to provide cold water elsewhere.

[0032] In summary, the heat pump system described above offers multiple cooling and heating modes, fully satisfying users in various application scenarios. Compared to conventional heat pump units on the market, it offers multiple modes of operation, including independent heating, independent cooling, simultaneous heating and cooling, direct heating, and circulating heating. Users can produce hot water in winter, cold water in summer, or both hot and cold water simultaneously. This offers significant advantages for locations with limited installation space or where both hot and cold water are required.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, utilizes the above-disclosed technical content to make further possible variations, modifications, or alterations to the present invention's technical solution shall constitute equivalent embodiments of the present invention. Therefore, any equivalent and equivalent variations made in accordance with the principles of the present invention, without departing from the scope of the present invention's technical solution, shall be encompassed within the scope of protection of the present invention.

Claims

1. A multifunctional heat pump system, characterized in that: The invention comprises a compressor (1), a four-way valve (2), a hot water heat exchanger (3), a cooling water heat exchanger (4) and an evaporator (5), wherein the four interfaces of the four-way valve (2) are respectively connected to the exhaust port of the compressor (1), one end of the evaporator (5), one end of the refrigerant flow path of the hot water heat exchanger (3) and the return air port of the compressor (1), and the other end of the refrigerant flow path of the hot water heat exchanger (3) is respectively connected to the refrigerant flow path of the cooling water heat exchanger (4) and the return air port of the evaporator (5). 5), the other end of the evaporator (5) is connected to one end of the refrigerant flow path of the cooling water heat exchanger (4) in a one-way manner through a preset first one-way valve (6); the other end of the refrigerant flow path of the cooling water heat exchanger (4) is connected to the exhaust port of the compressor (1); a preset external water source flows through the heat exchange water path of the heating water heat exchanger (3) to absorb heat to produce hot water; and a preset external water source flows through the heat exchange water path of the cooling water heat exchanger (4) to release heat to produce cooling water.

2. A multifunctional heat pump system according to claim 1, characterized in that: It also includes a water storage tank (11), wherein the water return port and the water outlet of the water storage tank (11) are respectively connected to the two ends of the hot water exchange circuit of the hot water heat exchanger (3).

3. The multifunctional heat pump system according to claim 1, characterized in that: A first expansion valve (7) is provided between the refrigerant flow path of the hot water heat exchanger (3) and the evaporator (5).

4. The multifunctional heat pump system according to claim 1, characterized in that: A second one-way valve (8) is provided between the refrigerant flow path of the hot water heat exchanger (3) and the refrigerant flow path of the cooling water heat exchanger (4).

5. The multifunctional heat pump system according to claim 1, characterized in that: A third one-way valve (9) is provided between the refrigerant flow path of the refrigerated water heat exchanger (4) and the exhaust port of the compressor (1).

6. The multifunctional heat pump system according to claim 1, characterized in that: A fourth one-way valve (10) is provided between the four-way valve (2) and the air return port of the compressor (1).

7. The multifunctional heat pump system according to claim 1, characterized in that: A second expansion valve (14) is provided at the refrigerant flow path port of the refrigerated water heat exchanger (4), and the other end of the evaporator (5) and the other end of the refrigerant flow path of the hot water heat exchanger (3) are connected to the refrigerant flow path of the refrigerated water heat exchanger (4) via the second expansion valve (14).

8. The multifunctional heat pump system according to claim 2, characterized in that: It also includes a three-way valve (13) and a solenoid valve (15), wherein the three interfaces of the three-way valve (13) are respectively connected to one end of the hot water exchange circuit of the hot water heat exchanger (3), the water outlet of the water storage tank (11), and the user-side outlet, and the two ends of the solenoid valve (15) are bypass-connected between the water outlet of the water storage tank (11) and the user-side outlet.

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