A multifunctional air conditioning heat pump water heater unit

Abstract

The present invention provides a multifunctional air-conditioning heat pump water-heating unit, which belongs to the technical field of household appliances, and includes a compressor 1, a four-way valve 2, a first heat exchanger 3, a solenoid valve 4, a one-way valve 5, a first electronic expansion valve 6, an outdoor fan 7, a second heat exchanger 8, a second electronic expansion valve 9, a first stop valve 10, a second stop valve 11, an indoor fan 12, a third heat exchanger 13, and a gas-liquid separator 14. The multifunctional air-conditioning heat pump water-heating unit can realize multiple modes of operation: four modes of cooling and hot water, hot water, cooling and heating. The present invention can adapt to different needs such as cold and hot water, realize comprehensive cold and hot utilization, maximize the annual utilization rate of the equipment, and realize multiple modes of operation: four modes of cooling and hot water, hot water, cooling and heating, and maximize the annual average energy saving efficiency.

Description

Technical Field

[0001] The invention relates to the field of air source heat pump water heater equipment, in particular to a multifunctional air-conditioning heat pump heat unit. Background Art

[0002] With the continuous improvement of people's living standards and environmental awareness, air source heat pump water heaters have developed rapidly in recent years. They have been recognized by the majority of users for their advantages such as energy saving, safety, environmental protection and intelligence.

[0003] Existing heat pump air conditioning hot water units use double four-way valves to control the switching between modes, such as the patent with publication number CN101788208A. Although multiple function switching can be achieved, the system is complex, the control is complex, the failure rate is high, and the system reliability is poor. There are also methods that use a four-way valve plus a three-way valve to achieve switching between multiple modes, such as the patent with publication number CN102313326A, but the patent has very high quality requirements for the three-way valve, which is prone to failures such as frost and cannot achieve the most ideal use effect. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional air-conditioning heat pump thermal unit, which aims to overcome the above-mentioned shortcomings of the prior art, optimize the structure, improve the reliability of mode switching, better improve the defrosting effect, and at the same time better adapt to the multi-mode requirements of various application scenarios and improve operational reliability.

[0005] The technical solution of a multifunctional air-conditioning heat pump heat unit of the present invention is: a multifunctional air-conditioning heat pump hot water unit, the unit comprises a compressor 1, a four-way valve 2, a first heat exchanger 3, a solenoid valve 4, a one-way valve 5, a first electronic expansion valve 6, an outdoor fan 7, a second heat exchanger 8, a second electronic expansion valve 9, a first stop valve 10, a second stop valve 11, an indoor fan 12, a third heat exchanger 13, and a gas-liquid separator 14, the exhaust port of the compressor 1 is connected to the d interface of the four-way valve 2, the c interface of the four-way valve is divided into two paths, which are respectively connected to the first heat exchanger 3 and one end of the solenoid valve 4, the other end of the first heat exchanger 3 is connected to one end of the one-way valve 5, and the other end of the one-way valve 5 is connected to the One end is connected to one end of the first electronic expansion valve 6, and the other end of the first electronic expansion valve 6 is divided into two paths, one path is connected to the other end of the solenoid valve 4, and the other path is connected to one end of the second heat exchanger 8. The other end of the second heat exchanger is connected to one end of the second electronic expansion valve 9, and the other end of the second electronic expansion valve 9 is connected to one end of the first stop valve 10. The other end of the first stop valve 10 is connected to one end of the third heat exchanger 13. The other end of the third heat exchanger 13 is connected to one end of the second stop valve 11. The other end of the second stop valve 11 is connected to the e interface of the four-way valve 2, the s interface of the four-way valve 2 is connected to the inlet of the gas-liquid separator 14, and the outlet of the gas-liquid separator 14 is connected to the return air port of the compressor 1.

[0006] The first heat exchanger 3 is a water tank with coils or a high-efficiency tank-and-tube heat exchanger, a plate heat exchanger, or a coaxial sleeve heat exchanger. The second heat exchanger 8 is a fin-and-tube heat exchanger used in conjunction with a fan.

[0007] The multifunctional heat pump water heater can realize multiple modes of operation: four modes of cooling and hot water, hot water, cooling and heating; the electrical switch control methods and refrigerant flow of each mode are as follows:

[0008] (1) Refrigeration: The compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is energized, the first electronic expansion valve coil is closed, the outdoor fan is turned on, the second electronic expansion valve is opened for adjustment, and the indoor fan is turned on; Refrigerant flow: compressor → four-way valve → solenoid valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor;

[0009] (2) Hot water production: the compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is not energized, the first electronic expansion valve is turned on and adjusted, the outdoor fan is turned on, the second electronic expansion valve is opened to the maximum, and the indoor fan is not energized; refrigerant flow: compressor → four-way valve → first heat exchanger → one-way valve → first electronic expansion valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor;

[0010] (3) Cooling and hot water: The compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is not energized, the first electronic expansion valve is opened to the maximum, the outdoor fan is not energized, the second electronic expansion valve is opened and adjusted, and the indoor fan is turned on; Refrigerant flow: compressor → four-way valve → first heat exchanger → one-way valve → first electronic expansion valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor;

[0011] (4) Heating: The compressor is turned on, the four-way valve coil is energized, the solenoid valve coil is energized, the first electronic expansion valve is closed, the outdoor fan is turned on, the second electronic expansion valve is opened and adjusted, and the indoor fan is turned on; Refrigerant flow: compressor → four-way valve → second stop valve → third heat exchanger → first stop valve → second electronic expansion valve → second heat exchanger → solenoid valve → four-way valve → gas-liquid separator → compressor.

[0012] The present invention provides a multifunctional heat pump water heater unit, which can adapt to different needs such as cooling, heating and hot water, realize comprehensive cooling and heating utilization, maximize the annual utilization rate of the equipment, and realize multiple modes of operation: cooling and hot water production, hot water production, cooling and heating four-mode cycle, with the goal of maximizing the annual average energy saving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a principle diagram of a multifunctional heat pump water heater unit of the present invention;

[0015] Figure 2 This is a refrigeration principle diagram of a multifunctional heat pump water heater unit according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the principle of hot water production, cooling and hot water production of a multifunctional heat pump hot water unit according to an embodiment of the present invention;

[0017] Figure 4 The present invention is a heating principle diagram of a multifunctional heat pump water heater unit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Any modifications and equivalent transformations made in accordance with the spirit of the present invention, or various variations based on this, are within the scope of protection of the present invention.

[0019] Reference Figure 1 It is a schematic diagram of a multifunctional heat pump water heater unit of the present invention, a multifunctional air-conditioning heat pump water heater unit, comprising a compressor 1, a four-way valve 2, a first heat exchanger 3, a solenoid valve 4, a one-way valve 5, a first electronic expansion valve 6, an outdoor fan 7, a second heat exchanger 8, a second electronic expansion valve 9, a first stop valve 10, a second stop valve 11, an indoor fan 12, a third heat exchanger 13, and a gas-liquid separator 14. The exhaust port of the compressor 1 is connected to the d interface of the four-way valve 2, the c interface of the four-way valve is divided into two paths, which are respectively connected to the first heat exchanger 3 and one end of the solenoid valve 4, the other end of the first heat exchanger 3 is connected to one end of the one-way valve 5, the other end of the one-way valve 5 is connected to one end of the first electronic expansion valve 6, the other end of the first electronic expansion valve 6 is divided into two paths, one path is connected to the other end of the solenoid valve 4, and the other path is connected to one end of the second heat exchanger 8, the other end of the second heat exchanger is connected to one end of the second electronic expansion valve 9, the other end of the second electronic expansion valve 9 is connected to one end of the first stop valve 10, the other end of the first stop valve 10 is connected to one end of the third heat exchanger 13, the other end of the third heat exchanger 13 is connected to one end of the second stop valve 11, the other end of the second stop valve 11 is connected to the e interface of the four-way valve 2, the s interface of the four-way valve 2 is connected to the inlet of the gas-liquid separator 14, and the outlet of the gas-liquid separator 14 is connected to the return air port of the compressor 1;

[0020] The exhaust port of the compressor 1 is connected to the d interface of the four-way valve 2, the c interface of the four-way valve is divided into two paths, which are respectively connected to the first heat exchanger 3 and one end of the solenoid valve 4, the other end of the first heat exchanger 3 is connected to one end of the one-way valve 5, the other end of the one-way valve 5 is connected to one end of the first electronic expansion valve 6, the other end of the first electronic expansion valve 6 is divided into two paths, one path is connected to the other end of the solenoid valve 4, and the other path is connected to one end of the second heat exchanger 8, the other end of the second heat exchanger is connected to one end of the second electronic expansion valve 9, the other end of the second electronic expansion valve 9 is connected to one end of the first stop valve 10, the other end of the first stop valve 10 is connected to one end of the third heat exchanger 13, the other end of the third heat exchanger 13 is connected to one end of the second stop valve 11, the other end of the second stop valve 11 is connected to the e interface of the four-way valve 2, the s interface of the four-way valve 2 is connected to the inlet of the gas-liquid separator 14, and the outlet of the gas-liquid separator 14 is connected to the return air port of the compressor 1.

[0021] The first heat exchanger is a water tank with coils, or a high-efficiency tank-and-tube heat exchanger, a plate heat exchanger, or a coaxial sleeve heat exchanger. The second heat exchanger is a fin-and-tube heat exchanger used in conjunction with a fan.

[0022] Reference Figure 2 This is a refrigeration principle diagram of a multifunctional heat pump water heater unit according to an embodiment of the present invention. The electrical switch control method and refrigerant flow of the refrigeration mode are respectively:

[0023] The compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is energized, the first electronic expansion valve coil is closed, the outdoor fan is turned on, the second electronic expansion valve is opened for adjustment, and the indoor fan is turned on; refrigerant flow: compressor → four-way valve → solenoid valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor.

[0024] Figure 3 This is a schematic diagram of hot water production and cooling hot water production of a multifunctional heat pump hot water unit according to an embodiment of the present invention. The electrical switch control mode and the refrigerant flow are respectively:

[0025] In the hot water making mode: the compressor is on, the four-way valve coil is not energized, the solenoid valve coil is not energized, the first electronic expansion valve is opened and adjusted, the outdoor fan is on, the second electronic expansion valve is opened to the maximum, and the indoor fan is not energized; the refrigerant flow: compressor → four-way valve → first heat exchanger → one-way valve → first electronic expansion valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor.

[0026] Cooling and hot water mode: the compressor is on, the four-way valve coil is not energized, the solenoid valve coil is not energized, the first electronic expansion valve is opened to the maximum, the outdoor fan is not energized, the second electronic expansion valve is opened and adjusted, and the indoor fan is on; refrigerant flow: compressor → four-way valve → first heat exchanger → one-way valve → first electronic expansion valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor.

[0027] Figure 4 This is a heating principle diagram of a multifunctional heat pump water heater unit according to an embodiment of the present invention. The electrical switch control method and refrigerant flow of the heating mode are: the compressor is turned on, the four-way valve coil is energized, the solenoid valve coil is energized, the first electronic expansion valve is closed, the outdoor fan is turned on, the second electronic expansion valve is turned on for adjustment, and the indoor fan is turned on; the refrigerant flow: compressor → four-way valve → second stop valve → third heat exchanger → first stop valve → second electronic expansion valve → second heat exchanger → solenoid valve → four-way valve → gas-liquid separator → compressor.

[0028] Of course, the present invention is not limited to the embodiments described above and shown in the accompanying drawings. Any modifications and equivalent transformations made in accordance with the spirit of the present invention, or various deformations adopted on this basis, still fall within the scope of protection of the present invention.

Claims

1. A multifunctional air-conditioning heat pump water heater unit, comprising a compressor (1), a four-way valve (2), a first heat exchanger (3), a solenoid valve (4), a one-way valve (5), a first electronic expansion valve (6), an outdoor fan (7), a second heat exchanger (8), a second electronic expansion valve (9), a first stop valve (10), a second stop valve (11), an indoor fan (12), a third heat exchanger (13), and a gas-liquid separator (14), characterized in that: The exhaust port of the compressor (1) is connected to the interface d of the four-way valve (2); the interface c of the four-way valve is divided into two paths, which are respectively connected to the first heat exchanger (3) and one end of the solenoid valve (4); the other end of the first heat exchanger (3) is connected to one end of the one-way valve (5); the other end of the one-way valve (5) is connected to one end of the first electronic expansion valve (6); the other end of the first electronic expansion valve (6) is divided into two paths, one path is connected to the other end of the solenoid valve (4); the other path is connected to one end of the second heat exchanger (8); the other end of the second heat exchanger is connected to the second One end of the electronic expansion valve (9) and the other end of the second electronic expansion valve (9) are connected to one end of the first stop valve (10), the other end of the first stop valve (10) is connected to one end of the third heat exchanger (13), the other end of the third heat exchanger (13) is connected to one end of the second stop valve (11), the other end of the second stop valve (11) is connected to the e interface of the four-way valve (2), the s interface of the four-way valve (2) is connected to the inlet of the gas-liquid separator (14), and the outlet of the gas-liquid separator (14) is connected to the return air port of the compressor (1); The multifunctional heat pump water heater can realize multiple modes of operation: four modes of cooling and hot water, hot water, cooling and heating; the electrical switch control methods and refrigerant flow of each mode are as follows: (1) Refrigeration: The compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is energized, the first electronic expansion valve coil is closed, the outdoor fan is turned on, the second electronic expansion valve is opened for adjustment, and the indoor fan is turned on; Refrigerant flow: compressor → four-way valve → solenoid valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor; (2) Hot water production: the compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is not energized, the first electronic expansion valve is turned on and adjusted, the outdoor fan is turned on, the second electronic expansion valve is opened to the maximum, and the indoor fan is not energized; refrigerant flow: compressor → four-way valve → first heat exchanger → one-way valve → first electronic expansion valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor; (3) Cooling and hot water: The compressor is turned on, the four-way valve coil is not energized, the solenoid valve coil is not energized, the first electronic expansion valve is opened to the maximum, the outdoor fan is not energized, the second electronic expansion valve is opened and adjusted, and the indoor fan is turned on; Refrigerant flow: compressor → four-way valve → first heat exchanger → one-way valve → first electronic expansion valve → second heat exchanger → second electronic expansion valve → first stop valve → third heat exchanger → second stop valve → four-way valve → gas-liquid separator → compressor; (4) Heating: The compressor is turned on, the four-way valve coil is energized, the solenoid valve coil is energized, the first electronic expansion valve is closed, the outdoor fan is turned on, the second electronic expansion valve is opened and adjusted, and the indoor fan is turned on; Refrigerant flow: compressor → four-way valve → second stop valve → third heat exchanger → first stop valve → second electronic expansion valve → second heat exchanger → solenoid valve → four-way valve → gas-liquid separator → compressor.

2. A multifunctional air conditioning heat pump water heater unit according to claim 1, characterized in that: The first heat exchanger (3) is a water tank with coils or a high-efficiency tank-and-tube heat exchanger, a plate heat exchanger, or a coaxial sleeve heat exchanger. The second heat exchanger (8) is a fin-and-tube heat exchanger used in conjunction with a fan.

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