Refrigerator system for store

Abstract

The present invention relates to a refrigerator system for store, which is capable of being operated corresponding to the load capacity, reducing minutely the raverse inner temperature fluctuation to the greatest extent, reducing noises and space, and facilitating trial run, maintaince and fault treatment. A helix compressor without reciprocating motions is adapted and installed inside an equipment room, which rotary speed is controlled by detecting the running suction presure and changing the convertor frequency. Said system is capable of determining a fault such as an exceptional temperature increase of the convertor, wherein a commercial power supply in connected when a fault occurs. The pressure and the temperature of each part, which are displayed by number and used for reflecting the running conditions, indicate the reasons for the exceptional stops.

Description

[0001] The present invention is a divisional application of the invention patent application filed on March 29, 1996 with the application number of 96102801.7 and the title of invention being "refrigerator system for store". technical field [0002] The present invention relates to a refrigerator system for shops; more particularly, to a refrigerator suitable for connecting 5 to 7 small-capacity showcases (refrigerated cabinets) to one refrigerator system, as seen in convenience stores. Background technique [0003] As an example, Japanese Patent Laid-Open No. 60-175970 describes a system in which an air-cooled condenser section is installed outdoors, a compressor section is installed indoors in a mechanical room, and the The capacity of the compressor is controlled by changing the rotation speed of the compressor with an inverter to suppress the reduction of its cooling capacity. [0004] Many prior art refrigerator systems using an inverter and a reciprocating compressor ...

AI Technical Summary

Problems solved by technology

Therefore, it cannot operate fully and precisely with high accuracy over a wide range of capacities;

[0006] (2). Although the high-pressure discharge gas discharged from the compressor fluctuates greatly, the fluctuation is sometimes further amplified when the compressor speed is changed by the converter

Therefore, there are many restrictions in arranging the refrigerant pipes in order to prevent the sound of refrigerant gas flow inside the refrigerant pipes, and the vibration of the pipe itself; and

[0007] (3). Although the vibration and noise of the compressor itself are large, the vibration and noise are further amplified when the converter is used to change its speed

Therefore, there are many restrictions on the location of the machine room, installation in urban residential areas, and operation at night.

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