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Air conditioner

A technology for air conditioners and compressors, applied in air conditioning systems, refrigerators, compressors, etc., can solve problems such as inability to dehumidify, rise in evaporation temperature, etc., and achieve the effect of expanding the range and coping with load changes

Active Publication Date: 2014-12-17
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, conversely, when the load becomes very small, there is a problem that the evaporation temperature rises and it becomes impossible to dehumidify

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Next, an embodiment of the air conditioner 1 according to the present invention will be described.

[0041]

[0042] Such as figure 1 As shown, the air conditioner 1 of this embodiment is provided with the indoor unit 2 installed indoors, and the outdoor unit 3 installed outdoors. Furthermore, the air conditioner 1 includes a refrigerant circuit that connects a compressor 10 , a four-way valve 11 , an outdoor heat exchanger 12 , an expansion valve 13 , and an indoor heat exchanger 14 . In the refrigerant circuit, an outdoor heat exchanger 12 is connected to a discharge port of the compressor 10 via a four-way valve 11 , and an expansion valve 13 is connected to the outdoor heat exchanger 12 . Furthermore, one end of the indoor heat exchanger 14 is connected to the expansion valve 13 , and the suction port of the compressor 10 is connected to the other end of the indoor heat exchanger 14 via the four-way valve 11 . The indoor heat exchanger 14 has an auxiliary heat e...

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PUM

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Abstract

A problem exists in which dehumidification cannot be carried out when the load decreases. The air conditioner of the present invention comprises an indoor heat exchanger having an auxiliary heat exchanger (20) and a main heat exchanger (21) that is arranged on the downstream side of the auxiliary heat exchanger (20). During operation in a predetermined dehumidifying operation mode, all of the liquid refrigerant supplied to the auxiliary heat exchanger (20) evaporates partway through the auxiliary heat exchanger (20). As a result, only a portion of the upstream side of the auxiliary heat exchanger (20) is an evaporation region, and the area on the downstream side of the evaporation region for the auxiliary heat exchanger (20) is a superheating region. In addition, during the predetermined dehumidifying operation, a compressor and an expansion valve are controlled so that the area of the evaporation region of the auxiliary heat exchanger (20) changes in accordance with the load.

Description

technical field [0001] The present invention relates to an air conditioner performing a dehumidification operation. Background technique [0002] Among the conventional air conditioners, there is an air conditioner in which an auxiliary heat exchanger is arranged on the back side of the main heat exchanger, and the refrigerant is evaporated only by the auxiliary heat exchanger to dehumidify locally, so that even at low load (When the rotation speed of the compressor is low), for example, the difference between the room temperature and the set temperature is small enough, and the required cooling capacity is small, and dehumidification is possible. According to this air conditioner, the evaporation area is limited to the auxiliary heat exchanger, and the temperature sensor is arranged on the downstream side of the evaporation area to control the degree of superheat to be constant. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02F24F1/00F24F13/30F24F1/0067
CPCF25B13/00F25B40/02F24F1/0059F25B2313/0234F25B2313/0314F25B2313/0315F25B2700/2104F24F2140/50F24F11/65F24F1/0068F24F1/0067Y02B30/70F25B1/005F25B49/022F25B2600/02F25B2600/2513F25D17/06
Inventor 配川知之南田知厚
Owner DAIKIN IND LTD