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

An air conditioning, outdoor unit technology, applied in air conditioning systems, space heating and ventilation, space heating and ventilation control input, etc., and can solve problems such as the reduction of cooling capacity or heating capacity of indoor units

Active Publication Date: 2014-01-29
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the cooling capacity or heating capacity of the indoor unit is reduced due to insufficient refrigerant

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

Examples

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Embodiment Construction

[0021] In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown schematically in order to simplify the drawings.

[0022] Embodiments (examples) of the present invention will be described in detail below with reference to the drawings. In the air conditioning apparatus of this embodiment, five indoor units are connected in parallel to two outdoor units. In the air conditioner, the operating state of each indoor unit can be set (selected) to either cooling operation or heating operation, and these indoor units can be operated simultaneously (so-called free cooling and heating operation). running).

[0023] In addition, this invention is not limited to the following embodiment (Example...

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PUM

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Abstract

An outdoor unit for an air-conditioning apparatus includes: a compressor; an outdoor fan; a plurality of outdoor heat exchangers coupled to a plurality of indoor units; a switching member configured to switch functions of the outdoor heat exchangers to either condensers or evaporators by switching of coupling states between the compressor and the outdoor heat exchangers; and a control unit configured to calculate a low pressure saturation temperature during a cooling operation or a cooling-main operation, and configured to cause all of the plurality of outdoor heat exchangers to serve as condensers by controlling the switching member when a state in which an open-air temperature is lower than the low pressure saturation temperature continues for a predetermined time.

Description

[0001] Cross References to Related Applications [0002] This application is based on Japanese Patent Application No. 2012-153762 submitted to the Japan Patent Office on July 09, 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 conditioner including at least one outdoor unit and a plurality of indoor units is known. The indoor unit is connected to the outdoor unit in parallel through a plurality of refrigerant pipes. The air conditioner can set (select) the operating state of each indoor unit to either cooling operation or heating operation, and can make these indoor units operate at the same time (so-called cooling and heating free operation (cooling and heating room フリー transport)). [0005] For example, Japanese Patent Laid-Open Publicati...

Claims

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Application Information

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IPC IPC(8): F24F1/06F24F11/00F25B41/04F25B41/31
CPCF24F1/20F25B29/003F24F11/006F24F1/46F24F11/30F24F11/62F24F2110/12F24F2140/12F24F11/84F24F11/63F24F2140/00
Inventor 田村秀哉松永隆廣渡邊真寿川合圭人木村隆志户矢廣太郎冈康弘中岛健
Owner FUJITSU GENERAL LTD
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