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One-drive-multiple cooling-heating air conditioner

A technology that drives multiple cooling, heating, and air conditioners. It is applied to compressors with multiple evaporators, refrigerators, refrigeration, and liquefaction. It can solve the problems of compressor damage and accumulation, and achieve the effect of solving the problem of oil return.

Inactive Publication Date: 2008-12-10
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the one-to-many air conditioner is in heating operation, the refrigerant flow direction is opposite to that in cooling operation. In actual use, it often happens that some indoor unit evaporators do not need to supply refrigerant. At this time, the inlet of the indoor unit evaporator The solenoid valve will be disconnected, and the high-temperature and high-pressure refrigerant (containing a certain amount of lubricating oil) from the compressor will partially accumulate in the evaporator of the indoor unit and cannot return to the compressor through the condenser, which will cause the compressor to be damaged due to lack of lubricating oil. while damaged

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0013] Such as figure 1 as shown,

[0014] It is a one-to-multi-cooling and heating air conditioner, including a compressor 1, a four-way valve 2 connected to the compressor at the a end and the c end, a condenser 3 connected to the b end of the four-way valve at one end, a first evaporator 10, and a second evaporator. Evaporator 12, first solenoid valve 11, second solenoid valve 13, heating capillary 5, cooling capillary 7, first one-way valve 4, second one-way valve 6, third one-way valve 8 and fourth one-way valve Valve 9. The first evaporator and the first solenoid valve are connected in series to form a first series device, the second evaporator and the second solenoid valve are connected in series to form a second series device, and the two series devices are connected in parallel to form a parallel device. In this embodiment, the heating capillary 5 and the first one-way valve 4 are connected in series to form a third series device, and the cooling capillary 7 and the...

Embodiment 2

[0017] Such as figure 2 As shown, the others are the same as in the first embodiment, the difference is that the heating capillary 5 of the first embodiment is replaced by the first electronic expansion valve 14, and the cooling capillary 7 is replaced by the second electronic expansion valve 15; the working method is the same as Embodiment 1 is the same and will not be described in detail.

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Abstract

This invention relates to an air conditioner including a compressor, a four-way valve, a condenser, a first and second evaporators and a first and second electromagnetic valves, in which, the first evaporator is serial to the first electromagnetic valve to compose a first serial device, a second evaporator is serial to the second electromagnetic valve to make up of a second serial device, which is parallel to the first serial device to form a parallel device characterizing in also including heating and cooling capillaries, one to four single-way valves, the heating capillary is serial to the first single-way valve to make up of a third serial device, the cooling capillary is serial to the second single-way valve to constitute a fourth serial device, the third and fourth serial devices make up of a bridge loop device with the third and fourth single-way valve, which makes the trend of a refrigerant flowing in the evaporator the same either at the heating state or the cooling state and the outlet of the evaporator is always connected with the air entry of the compressor.

Description

technical field [0001] The invention relates to a one-drag multi-cooling and heating air conditioner. Background technique [0002] The indoor units of a one-to-many air conditioner are composed of two or more indoor units. When designing the system, a solenoid valve is often installed in front of the evaporator inlet of each indoor unit, which is switched on and off as needed to control the flow to a certain unit. The indoor unit supplies refrigerant. When the one-to-many air conditioner is in heating operation, the refrigerant flow direction is opposite to that in cooling operation. In actual use, it often happens that some indoor unit evaporators do not need to supply refrigerant. At this time, the inlet of the indoor unit evaporator The solenoid valve will be disconnected, and the high-temperature and high-pressure refrigerant (containing a certain amount of lubricating oil) from the compressor will partially accumulate in the evaporator of the indoor unit and cannot re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B5/02
Inventor 徐言生王惠林
Owner SHUNDE POLYTECHNIC
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