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Container refrigeration apparatus

By controlling the compressor speed and refrigerant circulation volume, combined with fan control, the problem of difficulty in adjusting the heating capacity of the container refrigeration device is solved, the temperature inside the container is quickly and appropriately adjusted, and the reliability and energy saving performance of the device are improved.

Active Publication Date: 2012-10-10
DAIKIN INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the heating capacity for the inside of the box also becomes smaller

Method used

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Examples

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Embodiment Construction

[0037] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In addition, the following embodiments are preferred examples per se, and are not intended to limit the present invention, its applications, or its use range.

[0038] The refrigerator 10 for containers of this embodiment cools the inside of a container not shown. The container refrigeration unit 10 also serves as a cover for closing the opening surface of the side surface of the container main body.

[0039] Such as figure 1 As shown, the refrigerator 10 for a container includes a refrigerant circuit 20 that circulates a refrigerant to perform a refrigeration cycle. The refrigerant circuit 20 has a main circuit 21 , a hot gas bypass circuit 22 and a subcooling circuit 23 .

[0040] The main circuit 21 is composed of a compressor 30 , a condenser 31 , a main expansion valve 32 , and an evaporator 33 sequentially connected in series by refrigerant piping...

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PUM

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Abstract

Disclosed is a container refrigeration apparatus including a refrigerant circuit (20) which performs a refrigeration cycle and includes a main circuit (21) sequentially connecting a compressor (30), a condenser (31), a main expansion valve (32) and an evaporator (33), and a hot gas bypass circuit (22) through which a refrigerant compressed in the compressor (30) bypasses the condenser (31) and the main expansion valve (32) to flow into the evaporator (33); and a compressor control section (81) which controls operating speed of rotation of the compressor (30) during heating operation for heating inside of a container by the evaporator (33) while returning the compressed refrigerant from the compressor (30) to the compressor (30) through the hot gas bypass circuit (22) and the evaporator (33) so that a temperature inside the container reaches a target temperature.

Description

technical field [0001] The invention relates to a refrigeration device for containers, in particular to a technical measure for improving reliability. Background technique [0002] The refrigerator for containers which cools the inside of a container is a refrigerator which performs a refrigeration cycle. Patent Document 1 discloses such a refrigerator for containers. [0003] The refrigerator for containers disclosed in this document includes a refrigerant circuit in which a compressor, a condenser, an expansion valve, and an evaporator are connected. The evaporator is arranged inside the tank of the container. In the evaporator, the refrigerant absorbs heat from the air in the tank and evaporates. In this way, the air in the box is cooled. [0004] A bypass circuit is provided in the refrigerant circuit of the refrigerator for containers, and the bypass circuit is provided. The refrigerant (so-called hot gas) compressed in the compressor is supplied to the evaporator ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B41/04F25D11/00F25B41/20
CPCF25B2700/21174F25B2400/0403F25B2600/0253F25B41/04F25D11/003F25B2700/21173F25B2700/2106F25B2700/21175F25B2700/1931F25B2600/2507F25B2400/13Y02B30/741F25B2700/21172F25B2700/21152Y02B40/32F25B2700/21151F25B2400/19F25D31/005F25B2700/1933F25B2700/2103Y02B30/70Y02B40/00F25B41/20F25B41/24
Owner DAIKIN INDUSTRIES LTD
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