Refrigerating and heating type air conditioner and control method thereof

A control method and technology for air conditioners, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as affecting the heat exchange performance of the evaporator, increasing the compression power consumption of the compressor, affecting the energy efficiency level of the air conditioner, etc. Condensation phenomenon, reduce compression power consumption, and promote the effect of energy saving and emission reduction
CN105758043AInactive Publication Date: 2016-07-13GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
Publication Date
2016-07-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a refrigerating and heating type air conditioner and a control method thereof. The refrigerating and heating type air conditioner comprises a duplex-cylinder compressor, a commutation assembly, an outdoor heat exchanger, an indoor heat exchanger, an air-liquid separator, a control valve and a coolant radiator, wherein the control valve and the coolant radiator are connected in parallel; an air suction port of a first cylinder is communicated with a first liquid storage device, and the numeric range of the exhaust volume ratio of a second cylinder to the first cylinder is 1%-10%; the commutation assembly comprises a first valve port, a second valve port, a third valve port and a fourth valve port, and the fourth valve port is connected with the first liquid storage device; the air-liquid separator comprises an air outlet, a first interface and a second interface, the air outlet is connected with the second cylinder, and a first throttling element with an adjustable opening degree is connected between the first interface and the outdoor heat exchanger in series; a second throttling element with a fixed opening degree is connected between the second interface and the indoor heat exchanger in series. The coolant radiator and the control valve which are in parallel connection are connected between the outdoor heat exchanger and the first throttling element in series. The refrigerating and heating type air conditioner disclosed by the invention can effectively improve the energy efficiency of the air conditioner.
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Description

technical field

[0001] The invention relates to the refrigeration field, in particular to a heating and cooling air conditioner and a control method thereof. Background technique

[0002] The current air-conditioning refrigeration system does not optimize the cycle design of the gaseous refrigerant after throttling and before entering the evaporator, which causes the gaseous refrigerant to affect the heat transfer performance of the evaporator and increase the compression power consumption of the compressor, thereby affecting the energy efficiency of the air conditioner . Air injection enthalpy increase and two-stage compression technology can improve the heating capacity of the air conditioning system at low and ultra-low temperatures, but the energy efficiency improvement is very limited for cooling conditions where air conditioners are often used. Contents of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at ...

Claims

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