Liquid impact preventing air conditioner defrosting system

An air-conditioning and liquid-proof technology, used in damage protection, refrigeration and liquefaction, machine operation, etc., can solve problems such as compressor damage, and achieve the effect of avoiding compressor liquid shock

Active Publication Date: 2015-08-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese Patent Publication (Announcement) No. CN203964453 patent "air conditioner with hot gas bypass circuit" keeps the heating mode of the air conditioning system unchanged, by bypassing a part of the high-temperature refrigerant gas at the outlet of the compressor to the heat

Method used

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  • Liquid impact preventing air conditioner defrosting system
  • Liquid impact preventing air conditioner defrosting system
  • Liquid impact preventing air conditioner defrosting system

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Embodiment Construction

[0018] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] This patent has designed a kind of new air-conditioning system, in common air-conditioning system ( figure 1 Shown) on the basis of compressor 1, four-way reversing valve 2, indoor unit heat exchanger 3, throttling device 4 and outdoor unit heat exchanger 5, a liquid storage tank 6, an electric heater 7, Heating power supply 8, heating coil 9 and one-way valves 10-16.

[0020] The specific implementation plan of the anti-liquid shock air conditioning defrosting system is as follows:

[0021] (1) Normal heating mode, such as image 3 shown. The one-way valves 12, 14, 16 are in an open state, and the one-way valves 10, 11, 13, 15 are in a closed state. The high-temperature refrigerant gas discharged from the compressor 1 enters the heat exchanger 3 of the indoor unit through the four-way reversing valve 2 to be condensed and rele...

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Abstract

The invention discloses a liquid impact preventing air conditioner defrosting system. The liquid impact preventing air conditioner defrosting system comprises a compressor (1), a four-way reversing valve (2), an indoor unit heat exchanger (3), a throttling device (4) and an outdoor unit heat exchanger (5). Four ports of the four-way reversing valve (2) are connected with an outlet of the compressor (1), one end of the indoor unit heat exchanger (3), one end of the outdoor unit heat exchanger (5) and an inlet of the compressor (1) respectively. The two ends of the throttling device (4) are connected with the other end of the indoor unit heat exchanger (3) and the other end of the outdoor unit heat exchanger (5). A liquid storage tank (6) capable of separating gas-liquid two-phase refrigerating fluid is arranged between the four-way reversing valve (2) and the inlet of the compressor (1) and is capable of preventing liquid impact. A heating coil (9) and an electric heater (7) are arranged in the liquid storage tank (6), high-temperature and high-pressure refrigerating fluid gas can be provided for the outdoor unit heat exchanger (5) for defrosting, and it can be guaranteed that the indoor unit heat exchanger (3) can continuously provide heat for a room in the defrosting process.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to a liquid shock-proof air-conditioning defrosting system, which belongs to the technical field of refrigeration and air-conditioning. Background technique [0002] When the air conditioning system is running in winter heating conditions, the low-temperature refrigerant liquid in the heat exchanger tube of the outdoor unit absorbs heat from the ambient air through the fins of the heat exchanger. When the fin temperature of the heat exchanger of the outdoor unit is lower than the dew point temperature of the ambient air, the water vapor in the air will condense on the fin surface; when the fin temperature is lower than 0°C, the condensate will freeze and grow gradually on the fin surface into frost. The formation of frost increases the heat transfer resistance between the fins and the air, which will easily lead to insufficient evaporation of the refrigerant in the heat exchanger of th...

Claims

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Application Information

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IPC IPC(8): F25B47/02F25B43/00F25B29/00
CPCF25B29/003F25B43/006F25B47/02F25B2347/02F25B2400/01F25B2500/06
Inventor 胡海涛杨艺菲庄大伟丁国良
Owner SHANGHAI JIAO TONG UNIV
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