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Air conditioning unit and its control method

An air-conditioning unit and control valve technology, which is applied in the direction of control input involving air characteristics, space heating and ventilation control input, heating and ventilation control system, etc. and other issues to achieve the effect of increasing system flow, reducing workload and increasing reliability

Active Publication Date: 2018-10-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The four-way valve is an indispensable part of the air conditioning unit, but it is more prone to damage
However, this arrangement will restrict the pipeline system of the air conditioning unit, resulting in a more complicated pipeline system and a larger workload for pipeline layout

Method used

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  • Air conditioning unit and its control method
  • Air conditioning unit and its control method
  • Air conditioning unit and its control method

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] Such as image 3 As shown, the air conditioning unit provided by the embodiment of the present invention includes: a compressor 21 , a four-way valve 211 , an indoor heat exchanger 212 , an outdoor heat exchanger 27 and a throttling assembly 29 .

[0051] The D pipe mouth of the above-mentioned four-way valve 211 communicates with the exhaust port of the compressor 21 through the first connecting pipe 214, and the C pipe mouth of the four-way valve 211 ...

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Abstract

The invention discloses an air-conditioning unit and a control method thereof. The air-conditioning unit comprises: a compressor, an outdoor heat exchanger and a bypass device, wherein the bypass device can bypass the refrigerant discharged from the compressor to the inlet of the outdoor heat exchanger end or the outlet end of the outdoor heat exchanger. In the air conditioner unit disclosed in the present invention, when switching from cooling mode to heating mode, if the compressor discharges liquid refrigerant, the bypass device bypasses the liquid refrigerant to the inlet port of the outdoor heat exchanger or the outlet port of the outdoor heat exchanger , effectively reducing the liquid refrigerant flowing from the exhaust port of the compressor to the four-way valve, and preventing the four-way valve from being damaged by liquid hammer.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, and more specifically relates to an air conditioning unit and a control method thereof. Background technique [0002] The four-way valve is an indispensable part of the air conditioning unit, but it is more prone to damage. At present, most of the four-way valves are damaged by liquid shock. Specifically, when the outdoor environment is lower than the indoor environment, the air-conditioning unit has been shut down for a long time. The impact of high and low pressure differences or the attraction of refrigerant oil in the compressor crankcase cause refrigerant migration. The refrigerant returns to the compressor, causing the compressor to discharge liquid refrigerant. When the air conditioning system switches from cooling to heating, when the four-way valve changes direction, the main slide valve 11 of the four-way valve must pass through the middle position, such as figure 1 As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/04F25B41/00F24F11/83F25B41/20F25B41/40
CPCF24F11/30F24F11/62F24F11/83F24F2110/10F24F11/64F24F11/84F24F2110/12F25B41/40F25B41/20
Inventor 彭斌李志强郭亚会
Owner GREE ELECTRIC APPLIANCES INC