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Air conditioner

A technology for air conditioners and compressors, applied in refrigerators, compressors, mechanical equipment, etc., can solve the problems of reducing heating performance, hindering the smooth flow of outdoor air and heat exchange, etc., and achieve the effect of increasing heating capacity

Inactive Publication Date: 2011-05-18
LG ELECTRONICS INC
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The above-mentioned air conditioner generates water on the surface of the heat exchanger functioning as an evaporator during its operation, generates water on the surface of the indoor heat exchanger in the case of cooling operation, and generates water on the surface of the outdoor heat exchanger in the case of heating operation. Water generated on the surface of the exchanger, especially when the condensed water formed on the surface of the outdoor heat exchanger freezes, will hinder the smooth flow of outdoor air and heat exchange, thereby reducing the heating performance

Method used

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Embodiment Construction

[0027] Embodiments of the present invention that can achieve the above objects will be described below with reference to the drawings.

[0028] figure 1 It is a structural diagram showing the flow of refrigerant during cooling operation of an embodiment of the air conditioner of the present invention; figure 2 It is a block diagram showing the flow of refrigerant during heating operation of an embodiment of the air conditioner of the present invention; image 3 It is a block diagram showing the flow of refrigerant during the defrosting operation of an embodiment of the air conditioner of the present invention; Figure 4 yes Figure 1 to Figure 3 The enlarged cross-sectional view of the CNT heater module represented in ; Figure 5 It is a control block diagram of an embodiment of the air conditioner of the present invention.

[0029] Such as Figure 1 to Figure 3 As shown, the air conditioner of this embodiment includes: a compressor 2, which compresses the refrigerant; a...

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Abstract

An air includes: a compressor for compressing a refrigerant; an indoor heat exchanger for cooling or heating indoor with a refrigerant; an outdoor heat exchanger for exchanging heat of a refrigerant and outdoor air; an outdoor fan for ventilating outdoor air with the outdoor heat exchanger; a cooling / heating switching valve for switching cooling / heating; a first expansion device installed betweenthe indoor heat exchanger and the outdoor heat exchanger; a CNT heater module installed between the outdoor heat exchanger and the cooling / heating switching valve to evaporate a refrigerant; a secondexpansion device installed between the outdoor heat exchanger and the CNT heater module; and a controller for sustaining, when performing a heating operation, if a defrost condition becomes, a heating mode of the cooling / heating switching valve, fully opening the first expansion device, adjusting an opening degree so that the second expansion device expands a refrigerant, and performing a continuous heating defrost operation for operating the CNT heater module.

Description

technical field [0001] The present invention relates to an air conditioner, and more particularly, to an air conditioner that does not need to perform a defrosting operation for defrosting an outdoor heat exchanger during a heating operation. Background technique [0002] In general, an air conditioner is a device that cools or heats a room using a refrigeration cycle including a compressor, an outdoor heat exchanger, an expansion mechanism, and an indoor heat exchanger, and is composed of a refrigerator that cools the room, or consists of It is composed of an air conditioner (that is, a heat pump) that cools or heats the room and has both cooling and heating functions. [0003] In the case where the above-mentioned air conditioner is composed of an air conditioner having both cooling and heating functions, it includes a cooling and heating switching valve (that is, four valves) that changes the flow path of the compressed refrigerant in the compressor according to the cooli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B41/06F25B41/04F24F11/00
CPCF25B47/025F25B2600/2513F25B2313/02741F25B13/00F25B2313/0211F25B2341/0662F25B2313/008F25B2400/04F28F21/02F25B2313/02542F25B41/39F25B49/02F25B47/02F25B29/00F25B41/30F25B41/20Y02B30/70
Inventor 高永桓柳秉振李应烈金范锡
Owner LG ELECTRONICS INC
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