阅读说明：本技术 一种全循环供热水直热式热泵系统 (Full-circulation hot water supply directly-heated heat pump system ) 是由 王志毅 洪玉华 王高远 于 2020-11-19 设计创作，主要内容包括：本发明公开了一种全循环供热水直热式热泵系统,包括第一变频压缩机、第二变频压缩机、冷凝侧换热器,其特征在于：还包括四个四通阀、四个电子膨胀阀、四个空气侧换热器,所述第一变频压缩机的排气口与两个四通阀的D端口连通,所述第二变频压缩机的排气口与两个四通阀的D口连通,各个四通阀的E端口与冷凝侧换热器的输入端连接,冷凝侧换热器的输出端通过四个电子膨胀阀分别与四个空气侧换热器的输入端连通,所述四个空气侧换热器的输出端分别与四个四通阀的C端口连通,与现有技术相比,能够出水快,结构简单,能适应不同的环境工况。(The invention discloses a full-circulation hot water supply directly-heated heat pump system, which comprises a first variable frequency compressor, a second variable frequency compressor and a condensation side heat exchanger, and is characterized in that: still include four cross valves, four electronic expansion valves, four air side heat exchangers, the gas vent of first frequency conversion compressor and the D port intercommunication of two cross valves, the gas vent of second frequency conversion compressor and the D mouth intercommunication of two cross valves, the E port of each cross valve is connected with the input of condensation side heat exchanger, and the output of condensation side heat exchanger communicates with the input of four air side heat exchangers respectively through four electronic expansion valves, the output of four air side heat exchangers communicates with the C port of four cross valves respectively, compares with prior art, can go out the water soon, and simple structure can adapt to different environmental conditions.)

1. A full-circulation hot water supply directly-heated heat pump system is characterized in that: including first inverter compressor (1), second inverter compressor (9), condensation side heat exchanger (4), its characterized in that: the air conditioner further comprises four-way valves (2, 3, 10 and 11), four electronic expansion valves (5, 7, 12 and 14) and four air side heat exchangers (6, 8, 13 and 15), wherein an exhaust port of the first variable frequency compressor (1) is communicated with D ports of the two four-way valves (2 and 3), an exhaust port of the second variable frequency compressor (9) is communicated with D ports of the two four-way valves (10 and 11), an E port of each four-way valve is connected with an input end of the condensing side heat exchanger (4), an output end of the condensing side heat exchanger (4) is respectively communicated with input ends of the four air side heat exchangers (6, 8, 13 and 15) through the four electronic expansion valves (5, 7, 12 and 14), output ends of the four air side heat exchangers (6, 8, 13 and 15) are respectively communicated with C ports of the four-way valves (2, 3, 10 and 11), and the four-way valve (2), 3) The S ports of the four-way valves (10 and 11) are communicated with the air suction port of the second variable frequency compressor (9).

2. A full-cycle hot water supply directly-heated heat pump system as claimed in claim 1, wherein: the condensing side heat exchanger (4) adopts an elliptical double-pipe heat exchanger.

3. A full-cycle hot water supply directly-heated heat pump system as claimed in claim 2, wherein: and a circulating water inlet on the outer pipe (40) of the elliptical double-pipe heat exchanger is communicated with an output end of a circulating water pump (16), and a circulating water outlet on the outer pipe (40) of the elliptical double-pipe heat exchanger is provided with a temperature sensor (17).

4. A full-cycle hot water supply directly-heated heat pump system as claimed in claim 2, wherein: the inner space of an inner tube body (41) of the oval double-tube heat exchanger is averagely divided into four cavities (43, 44, 45 and 46) through a cross-shaped partition body (42), the input ends of the four cavities (43, 44, 45 and 46) are respectively communicated with E ports of four-way valves (2, 3, 10 and 11), and the output ends of the four cavities (43, 44, 45 and 46) are respectively communicated with four electronic expansion valves (5, 7, 12 and 14).

[ technical field ] A method for producing a semiconductor device

The invention relates to a directly-heated heat pump system, in particular to the use of a fully-circulating hot water supply directly-heated air source heat pump system.

[ background of the invention ]

With the rapid development of economy, the quality of life of people is continuously improved, the use requirements of consumers on the air source heat pump water heater are also continuously increased, wherein the requirements on continuous hot water use, shortening of the waiting time of secondary hot water use and the like are also increasingly remarkable, and the direct-heating heat pump water heater is generated.

The basic principle of the direct-heating heat pump water heater is as follows: the air source heat pump water heater group utilizes the reverse Carnot cycle principle to carry heat in air into water through a compressor acting, so that the water temperature is increased, and the hot water requirement of a user is further met. Specifically, the evaporation side is a fin heat exchanger, the refrigerant inside exchanges heat with air to absorb heat from the air, and the condensation side is a refrigerant-water heat exchanger to release the heat of the refrigerant into water. The directly-heated air source heat pump water heater group is a machine set capable of directly heating water to required temperature, and has the characteristics of large temperature difference and small flow, and hot water produced by the machine set can be directly used. The direct-heating type unit has stable high pressure and quick water outlet in the running process, thereby having great advantages in the family of water heaters.

The design requirements and development difficulties of the directly-heated heat pump water heater are as follows: in addition to meeting most of the design requirements of general hot water, the development of a direct-heating heat pump water heater also needs to pay attention to the following points: 1) the outlet water temperature reaches 55 ℃ or higher after once heating, the traditional cold and hot water unit generally adopts circulating heating, the water temperature in the container is heated to the required temperature through multiple times of heating, and the required temperature of the traditional cold and hot water unit is generally about 48 ℃ and rarely reaches 55 ℃. 2) The effluent temperature is stable, and the fluctuation of the effluent temperature is +/-3 ℃. The directly-heated type unit has the characteristic of fast water outlet, and in order to meet the user requirements of water outlet and use, the water outlet temperature of the unit must be stable and cannot fluctuate greatly so as to ensure the normal use of users. The fluctuation of the outlet water temperature can be caused by factors such as the change of the environment temperature, the inlet water temperature, the fin frosting and the like, so that the stability of the outlet water temperature is difficult to realize.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, and provides a full-circulation hot water supply direct-heating heat pump system which is fast in water outlet, simple in structure and capable of adapting to different environment working conditions.

In order to achieve the purpose, the invention provides a full-circulation hot water supply directly-heated heat pump system, which comprises a first variable frequency compressor, a second variable frequency compressor and a condensation side heat exchanger, and is characterized in that: the air outlet of the first frequency conversion compressor is communicated with D ports of the two four-way valves, the air outlet of the second frequency conversion compressor is communicated with D ports of the two four-way valves, E ports of the four-way valves are connected with the input end of the condensation side heat exchanger, the output end of the condensation side heat exchanger is communicated with the input ends of the four air side heat exchangers through the four electronic expansion valves respectively, the output ends of the four air side heat exchangers are communicated with C ports of the four-way valves respectively, S ports of the four-way valves are communicated with the air suction port of the first frequency conversion compressor, and the S ports of the four-way valves are communicated with the air suction port of the second frequency conversion compressor.

Preferably, the condensation side heat exchanger is an elliptical double pipe heat exchanger.

Preferably, a circulating water inlet on the outer pipe of the elliptical double-pipe heat exchanger is communicated with an output end of the circulating water pump, and a circulating water outlet on the outer pipe of the elliptical double-pipe heat exchanger is provided with a temperature sensor.

Preferably, the inner space of the inner tube of the elliptical double-tube heat exchanger is equally divided into four cavities by a cross-shaped partition, the input ends of the four cavities are respectively communicated with the ports E of the four-way valves, and the output ends of the four cavities are respectively communicated with the four electronic expansion valves.

The invention has the beneficial effects that: the invention realizes the annual stable operation through two variable frequency compressors and four-way valves. And the hot water tank is replaced by full-circulation hot water, so that the installation space is saved, and the miniaturization of the water heater is facilitated. When defrosting is needed in winter, one path of the connecting air side heat exchanger is switched to the corresponding four-way valve, so that high-temperature and high-pressure refrigerant gas enters the air side heat exchanger, and the aim of defrosting is fulfilled. The air side heat exchanger is defrosted by sequentially switching the four-way valve. All the other three routes normally heat during defrosting, cooperate the overfrequency operation of compressor, the unit still can have enough powerful heating function when defrosting, compares with prior art, can go out water soon, and simple structure can adapt to different environmental operating modes.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of a full-cycle hot water supply directly-heated heat pump system of the present invention;

fig. 2 is a schematic view of the structure of the condensation-side heat exchanger.

In the figure: 1-a first variable frequency compressor, 4-a condensation side heat exchanger, 9-a second variable frequency compressor, 16-a circulating water pump, 17-a temperature sensor, 40-an outer pipe, 41-an inner pipe body and 42-a cross-shaped partition body.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the full-cycle hot water supply directly-heated heat pump system of the present invention includes a first inverter compressor 1, a second inverter compressor 9, and a condensation side heat exchanger 4, and is characterized in that: the air conditioner further comprises four-way valves 2, 3, 10 and 11, four electronic expansion valves 5, 7, 12 and 14 and four air-side heat exchangers 6, 8, 13 and 15, wherein an exhaust port of the first variable frequency compressor 1 is communicated with D ports of the two four-way valves 2 and 3, an exhaust port of the second variable frequency compressor 9 is communicated with D ports of the two four-way valves 10 and 11, an E port of each four-way valve is connected with an input end of the condensing-side heat exchanger 4, an output end of the condensing-side heat exchanger 4 is respectively communicated with input ends of the four air-side heat exchangers 6, 8, 13 and 15 through the four electronic expansion valves 5, 7, 12 and 14, output ends of the four air-side heat exchangers 6, 8, 13 and 15 are respectively communicated with C ports of the four-way valves 2, 3, 10 and 11, S ports of the four-way valves 2 and 3 are respectively communicated with an air suction port of the first, The S ports of 11 are all communicated with the suction port of the second inverter compressor 9, the condensation side heat exchanger 4 adopts an elliptical double pipe heat exchanger, a circulating water inlet on an outer pipe 40 of the elliptical double pipe heat exchanger is communicated with an output end of the circulating water pump 16, a circulating water outlet on the outer pipe 40 of the elliptical double pipe heat exchanger is provided with a temperature sensor 17, an inner space of an inner pipe body 41 of the elliptical double pipe heat exchanger is averagely divided into four cavities 43, 44, 45 and 46 through a cross-shaped partition body 42, input ends of the four cavities 43, 44, 45 and 46 are respectively communicated with E ports of four-way valves 2, 3, 10 and 11, and output ends of the four cavities 43, 44, 45 and 46 are respectively communicated with four electronic expansion valves 5, 7, 12 and 14.

The working process of the invention is as follows:

in the working process of the full-cycle hot water supply directly-heated heat pump system, during heating operation, high-temperature and high-pressure refrigerant gas compressed by a variable frequency compressor 1 is divided into two paths, enters a condensing side heat exchanger 4 through a four-way valve 2 and a four-way valve 3 respectively, is condensed into liquid refrigerant, enters air side heat exchanger assemblies 6 and 8 through an electronic expansion valve 5 and an electronic expansion valve 7 respectively, is evaporated into low-pressure refrigerant gas, and then enters the variable frequency compressor 1 again through the four-way valve 2 and the four-way valve 3 for compression. Similarly, the high-temperature and high-pressure refrigerant gas compressed by the inverter compressor 9 on the other side is divided into two paths, and the two paths enter the condensing side heat exchanger 4 through the four-way valve 10 and the four-way valve 11 respectively to be condensed into liquid refrigerant, and then enter the air side heat exchanger assemblies 13 and 15 through the electronic expansion valve 10 and the electronic expansion valve 11 respectively to be evaporated into low-pressure refrigerant gas, and then enter the inverter compressor 9 again through the four-way valve 10 and the four-way valve 11 to be compressed.

By adjusting the four-way valve 2, the defrosting of the air side heat exchanger assembly 6 is realized. The high-temperature and high-pressure refrigerant gas compressed by the compressor 1 is divided into two paths, wherein one path enters the condensing side heat exchanger 5 through the four-way valve 3 and is condensed into liquid refrigerant, the other path melts frost layers on the air side heat exchanger assembly 6 through the air side heat exchanger assembly 6 of the four-way valve 2, the gaseous refrigerant is condensed into liquid state, throttled by the electronic expansion valve 5 and enters the condensing side heat exchanger 4 to be evaporated into low-pressure refrigerant gas, and then enters the first variable frequency compressor 1 again for compression after passing through the four-way valve 2. The rest two paths of high-temperature and high-pressure refrigerant gas compressed by the compressor 9 enter the condensing side heat exchanger 4 through the four-way valve 10 and the four-way valve 11 respectively and are condensed into liquid refrigerant.

By adjusting the four-way valve 2, the four-way valve 3, the four-way valve 10, and the four-way valve 11, defrosting of the air-side heat exchanger assembly is achieved, and continuous heating is achieved.

The invention relates to a condensing side heat exchanger which adopts an elliptical double pipe heat exchanger, the inner space of an inner pipe body 41 of the elliptical double pipe heat exchanger is averagely divided into four cavities 43, 44, 45 and 46 through a cross-shaped partition body 42, the input ends of the four cavities 43, 44, 45 and 46 are respectively communicated with E ports of four-way valves 2, 3, 10 and 11, the output ends of the four cavities 43, 44, 45 and 46 are respectively communicated with four electronic expansion valves 5, 7, 12 and 14, low-temperature hot water in a circulating hot water system enters an outer pipe of the condensing side heat exchanger 4 through a circulating water pump 16 to exchange heat with high-temperature high-pressure refrigerant gas to be changed into high-temperature hot water, and then the high-temperature hot water is adjusted into the.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.