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Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus

A technology of air conditioning and outdoor unit, which is applied in the direction of control input related to air characteristics, air conditioning system, space heating and ventilation, etc. It can solve the problems of increased opening of outdoor expansion valve, reduced heating capacity, and decreased refrigerant pressure, etc. question

Active Publication Date: 2014-02-12
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, increasing the opening degree of the outdoor expansion valve by executing the refrigerant pool elimination control causes the pressure (hydraulic pressure) of the refrigerant flowing through the liquid pipe to drop, resulting in a drop in high pressure
Therefore, the temperature difference between the refrigerant temperature and the room temperature becomes small, and the heating capacity decreases.

Method used

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  • Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus
  • Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus

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Embodiment ）

[0030] In addition, this invention is not limited to the following embodiment (Example). The present invention can be modified in various ways without departing from the gist of the present invention.

[0031] like figure 1 As shown, the air conditioner 1 of this embodiment includes: two outdoor units 2a, 2b, five indoor units 8a-8e, five switching units 6a-6e, and splitters 70, 71 and 72. The above-mentioned outdoor units 2a, 2b, indoor units 8a-8e, switching units 6a-6e, and splitters 70-72 utilize high-pressure gas pipes 30, high-pressure gas branch pipes 30a, 30b, low-pressure gas pipes 31, low-pressure gas branch pipes 31a, 31b, and liquid pipes 32. And the liquid branch pipes 32a, 32b are connected to each other. Thus, the refrigerant circuit of the air-conditioning apparatus 1 is constituted.

[0032] Moreover, the air pipe of the air conditioning apparatus 1 is comprised by the high-pressure air pipe 30, the high-pressure gas branch pipes 30a, 30b, the low-pressure ...

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Abstract

An outdoor unit for an air-conditioning apparatus includes an outdoor heat exchanger; a compressor; a refrigerant pipe configured to couple the outdoor heat exchanger and the compressor with an indoor unit including an indoor heat exchanger; and a control unit that determines whether the heating capacity of the indoor unit performing a heating operation is decreased by the refrigerant stagnated in the indoor heat exchanger.

Description

[0001] Cross References to Related Applications [0002] This application is based on Japanese Patent Application No. 2012-168066 submitted to the Japan Patent Office on July 30, 2012, and therefore the entire content of said Japanese Patent Application is incorporated herein by reference. technical field [0003] The present invention relates to an outdoor unit of an air conditioner and an air conditioner. Background technique [0004] Conventionally, an air-conditioning apparatus including at least one outdoor unit and a plurality of indoor units is known, and the indoor unit is connected in parallel to the outdoor unit through a plurality of refrigerant pipes. Such an air conditioner is a so-called multi-point type (multi) air conditioner, for example, all the indoor units can simultaneously perform a cooling operation or a heating operation. Alternatively, this air conditioner can set (select) the operating state of each indoor unit to either cooling operation or heatin...

Claims

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Application Information

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IPC IPC(8): F24F11/02
CPCF25B49/02F24F1/06F24F11/06F24F11/001F24F3/065F24F2011/0043F24F2011/0045F24F1/0003F24F11/30F24F2110/00F24F2140/12F24F2140/20F24F11/83F24F11/72F24F11/84F24F11/64
Inventor 户矢廣太郎田村秀哉松永隆廣渡邊真寿木村隆志冈康弘中岛健
Owner FUJITSU GENERAL LTD
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