Refrigerating system

A refrigeration system and cooled technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of insufficient cooling capacity and reduced compressor capacity, and achieve the reduction of refrigeration capacity, avoid high-load operation, and reduce load Effect

Inactive Publication Date: 2005-03-09
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reduction in compressor capacity will still cause insufficient cooling capacity

Method used

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  • Refrigerating system
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Examples

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Embodiment Construction

[0052] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Fig. 1 is a diagram illustrating a system configuration including a refrigerant circuit of a refrigeration system 1 according to an embodiment of the present invention. The refrigerating system 1 of the embodiment is an air conditioner that cools, for example, a room 2 (in-store) of a convenience store, and a storehouse (space to be cooled) or a freezer 4 of a plurality of refrigerators 3 and 3 as cooling storage equipment installed there. The material in the library (cooled space).

[0053] In addition, as for the refrigerators 3, in the embodiment, six refrigerators 3, the first to the sixth, are installed, but only the first and the second two refrigerators 3, 3 are shown in the drawings. In addition, these refrigerated boxes 3, 3 and refrigerated boxes 4 are not only open showcases with front or top openings, but also closed showcases that can freely open a...

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Abstract

To provide a refrigeration system that can effectively solve an efficiency reduction due to a reduced low pressure side pressure of a refrigerant circuit. The refrigeration system 1, in which the refrigerant circuit comprises a controllable displacement compressor 37, a condenser 38, an expansion valve 44 and an evaporator 43, according to a low pressure side pressure of the refrigerant circuit, reduces the displacement of the compressor if the low pressure side pressure lowers to a lower limit value, which is set along with an upper limit value as limits of a given set value, or increases the displacement of the compressor if the upper limit value is reached, and also changes the set value according to the deviation of an actual temperature in a chamber cooled by the evaporator 43 from a set temperature of the chamber.

Description

technical field [0001] The present invention relates to a refrigerating system for performing in-store cooling of cooling storage facilities, for example, in shops and the like. Background technique [0002] Conventionally, the interior (indoor) of a store such as a convenience store has been cooled, heated, and air-conditioned by an air conditioner. In addition, open showcases or showcases (refrigerated storage facilities) with doors for refrigerating or freezing are installed in stores, and these are cooled by refrigerators (see Patent Document 1). [0003] [Patent Document 1] JP-A-2002-174470 [0004] However, as described above, the evaporator in the storage such as the cooling showcase, the compressor, the condenser (these are installed in the refrigerator), and the expansion valve (decompression device) together constitute a refrigerant circuit. In addition, the capacity of the compressor can be controlled by controlling the operating frequency, etc. At the same time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25D29/00
CPCF25B2400/22
Inventor 三原一彦田部井聪
Owner SANYO ELECTRIC CO LTD
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