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Heat pump air conditioner

An air conditioning and heat pump technology, applied in the field of heat pump air conditioning devices, can solve the problems of increased production cost, many pipelines and parts, complicated connection structure and control device, etc., and achieves the effect of simple structure and low manufacturing cost.

Active Publication Date: 2016-05-25
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, various air-conditioning devices for uninterrupted heating and defrosting in the prior art use at least two branches, and need to add multiple valves or electronic expansion valves to cooperate with each other to realize the function of continuous heating and defrosting. Therefore, there are many pipelines and parts, and the connection structure and control devices are also very complicated, resulting in a significant increase in production costs.

Method used

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  • Heat pump air conditioner
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0063] Such as Figure 1 to Figure 5 As shown, the heat pump air-conditioning apparatus of the first embodiment includes an air-conditioning main circuit and a defrosting device for defrosting the outdoor heat exchanger 105 . The main air conditioning circuit is formed by sequentially connecting the compressor 101 , the four-way reversing valve 102 , the outdoor heat exchanger 105 , the electronic expansion valve 108 and the indoor heat exchanger 111 through a refrigeration pipeline. The opening of the electronic expansion valve 108 can be freely adjusted within the opening range of fully closed and fully opened. The first port of the four-way reversing valve 102 communicates with the outlet port of the compressor 101, the second port communicates with the outdoor heat exchanger 105, the third port communicates with the indoor heat exchanger 111, and the fourth port communicates with the compressor 101. The inlet port is connected. The four-way reversing valve 102 has a firs...

no. 2 example

[0098] Such as Figure 6 to Figure 10 As shown, the heat pump air-conditioning device of the second embodiment includes a main air-conditioning circuit and a defrosting device for defrosting the outdoor heat exchanger 205 . The main air-conditioning circuit includes a compressor 201 , a four-way reversing valve 202 , an outdoor-side heat exchanger 205 , an electronic expansion valve 208 and an indoor-side heat exchanger 211 connected in sequence through a refrigeration pipeline. The electronic expansion valve 208 is used to freely adjust the opening within the range of full close and full open. The first port of the four-way reversing valve 202 communicates with the outlet port of the compressor 201, the second port communicates with the outdoor heat exchanger 205, the third port communicates with the indoor heat exchanger 211, and the fourth port communicates with the compressor 201. The inlet port is connected. The four-way reversing valve 202 has a first state in which th...

no. 3 example

[0133] The structure and control method of the heat pump air conditioning device of the third embodiment are as follows: Figure 11 to Figure 15 As shown, it is basically the same as the second embodiment. Therefore, in the following description, the similarities between the two will not be described in detail, and only the differences will be described.

[0134] The difference between the heat pump air-conditioning device of the third embodiment and the second embodiment is that the location of the refrigerant heating device 312 is different. In the third embodiment, the refrigerant heating device 312 is connected in series to the outdoor side of the main air conditioning circuit for heat exchange. On the refrigeration pipeline between the device 305 and the electronic expansion valve 308.

[0135] When the heat pump air conditioner of the third embodiment is in cooling operation, the two-way valve 303 is closed, and the four-way reversing valve 302 is in the first state. S...

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Abstract

The invention provides a heat pump type air conditioning device which comprises an air conditioning main loop and a defrosting device used for defrosting an outdoor heat exchanger (105). The air conditioning main loop comprises a compressor (101), a four-way reversing valve (102), the outdoor heat exchanger (105), an expansion device (108) and an indoor heat exchanger (111) all of which are sequentially connected through a refrigeration pipeline. The defrosting device is a defrosting branch provided with a valve (103), a first end of the defrosting branch is arranged between the outlet end of the compressor (101) and the four-way reversing valve (102), and a second end of the defrosting branch is arranged between the outdoor heat exchanger (105) and the expansion device (108). According to the heat pump type air conditioning device, the function of defrosting the outdoor heat exchanger is achieved while the function of heating is achieved. The heat pump type air conditioning device has the advantages that the defrosting device is simple in structure, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the field of air conditioning, and more specifically, to a heat pump type air conditioning device. Background technique [0002] During the operation of the heat pump air conditioner in the cold season, the temperature of the outdoor side heat exchanger is lower than the ambient temperature. If the outdoor ambient temperature is lower than 7°C, the surface temperature of the outdoor heat exchanger may be lower than 0°C. If the humidity of the outdoor environment is high enough at the same time, it will cause frost or even ice on the outdoor heat exchanger, which will seriously hinder the heat exchange of the outdoor heat exchanger and cause the heating performance of the heat pump air-conditioning device to decline rapidly and greatly. Significantly affect the heating effect, and even cause the air conditioner compressor to fail. Therefore, it is necessary to defrost the outdoor heat exchanger in time. [0003] The tradition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F5/00F24F11/02F24F13/30F25B47/02
Inventor 张辉陈绍林熊军段亮
Owner GREE ELECTRIC APPLIANCES INC