Air conditioner

A technology for air conditioners and compressors, applied in air conditioning systems, refrigerators, compressors, etc., can solve the problems of reduced operating frequency of compressors, difficulty in comfort, and easy extension of time, so as to accelerate temperature reduction and improve comfort. Effect

Active Publication Date: 2014-03-12
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the indoor temperature is raised to the temperature set by the user, the operating frequency of the compressor decreases when the temperature is close to the set temperature.
Theref

Method used

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Examples

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Embodiment Construction

[0049] (1) The refrigeration circuit of the air conditioner

[0050] An air conditioner 10 according to an embodiment of the present invention is as figure 1 The illustration mainly includes an indoor unit 20 installed indoors, and an outdoor unit 50 installed outside the room, usually outdoors. figure 2 A circuit diagram showing a refrigeration circuit 14 constituting the air conditioner 10 . figure 1 The air conditioner 10 shown can perform both cooling operation and heating operation. However, in order to apply the invention of the present application, any air conditioner that can perform heating operation is sufficient, and it is not necessarily necessary to perform cooling operation and heating operation. Two kinds of operation.

[0051] The indoor unit 20 is connected to an outdoor unit 50 installed outdoors through a connecting pipe 12 , and constitutes a refrigeration circuit 14 of the air conditioner 10 together with the outdoor unit 50 . For this purpose, the ind...

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Abstract

The present invention provides an air conditioner, which can shorten time for causing indoor temperature to reach a preset temperature and improves comfort. In a cooling loop (14), refrigerant circulates in a sequence of a compressor (51), an indoor heat exchanger (21), an electric valve (54) and an outdoor heat exchanger (53) for performing heating operation. A control device (80) is configured for selecting a common heating mode and a quick heating mode in heating operation. In the common heating mode, when the indoor temperature reaches a first threshold temperature which is lower than the target temperature according to the target temperature, operation efficiency of the compressor (51) is reduced. On the contrary, in the quick heating mode, the control device (80) does not reduce operation efficiency of the compressor (51) until the indoor temperature reaches a second threshold temperature which is set to higher than the first threshold temperature according to the target temperature.

Description

technical field [0001] The present invention relates to an air conditioner that performs heating operation using a refrigeration circuit. Background technique [0002] In conventionally known air conditioners, a refrigeration circuit is constituted by a compressor, an outdoor heat exchanger, a decompression mechanism, an indoor heat exchanger, etc., and a refrigerant is circulated in the refrigeration circuit to perform heat exchange. In such an air conditioner, a compressor compresses a refrigerant and discharges high-temperature refrigerant from the compressor to perform heat exchange in an outdoor heat exchanger or an indoor heat exchanger. [0003] In such an air conditioner, during operation, the operating frequency of the compressor is controlled according to the air-conditioning load, so that an appropriate heat exchange capacity corresponding to the air-conditioning load can be exerted (for example, Patent Document 1 (Japanese Patent Application Laid-Open No. 07-3327...

Claims

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Application Information

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IPC IPC(8): F25B1/00F24F1/00F24F11/00
Inventor 木下显中井明纪前田次郎
Owner DAIKIN IND LTD
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