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air conditioner

An air conditioning and control device technology, applied in air conditioning systems, control inputs involving air characteristics, space heating and ventilation, etc., can solve problems such as retention and refrigerant accumulation, and achieve the effect of eliminating retention

Active Publication Date: 2020-03-17
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the liquid receiver is not installed like this, the refrigerant will accumulate in the indoor heat exchanger during heating, and there is a problem that stagnation may occur

Method used

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Examples

Experimental program
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Embodiment Construction

[0049] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0050] figure 1 It is a circuit diagram which shows the refrigeration cycle of embodiment of the air-conditioning apparatus of this invention.

[0051] The air conditioner includes an outdoor unit 2 and a plurality of indoor units 4 . Each indoor unit 18 is provided with an indoor heat exchanger 6 and an electronic control valve 7 for indoor use.

[0052] The outdoor unit 2 includes a first compressor 10 and a second compressor 11 . In the present embodiment, the first compressor 10 is set as a rated output compressor, and the second compressor 11 is set as an inverter compressor capable of variable output. By driving or stopping the first compressor 10 and adjusting the output of the second compressor 11, the output of the entire system can be finely controlled.

[0053] On the discharge side of the first compressor 10 and the second compressor 11 , an oil separato...

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Abstract

The present invention provides an air conditioner capable of eliminating stagnation of refrigerant in an indoor heat exchanger without providing a liquid receiver. In an air-conditioning device including an indoor heat exchanger (6) and an outdoor heat exchanger (15), a control device (50) is provided. In the case of the outdoor heat exchanger (15), the lower limit of the opening degree of the outdoor electronic control valve (18) is controlled to be increased.

Description

technical field [0001] The present invention relates to an air conditioner, and particularly to an air conditioner capable of eliminating stagnation of refrigerant in an indoor heat exchanger without providing a liquid receiver. Background technique [0002] In general, multiple indoor units are arranged in parallel (parallel), and multiple outdoor units with built-in compressors, outdoor heat exchangers, etc. are connected in parallel to the inter-unit piping that connects the indoor units. Adjustment device. [0003] As such an air conditioner, the following technology is disclosed in the prior art: for example, a plurality of outdoor units are included, and the capacity of the liquid receiver accommodated in the other outdoor unit is set to be higher than that of the liquid receiver accommodated in one outdoor unit. The capacity is small, or a liquid receiver is arranged only in one outdoor unit (for example, refer to Patent Document 1). [0004] prior art literature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F1/0063F24F11/89F25B41/00F25B41/40
CPCF24F1/0003F24F11/30F24F11/83F24F2110/00F24F11/84F25B41/40
Inventor 吉田健二大平刚司岸野正裕菅原大誉
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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