Refrigeration unit

A refrigeration device and cooling capacity technology, applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve problems such as consumption and excess energy

Active Publication Date: 2008-07-30
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the conventional refrigeration equipment, the compressor is always operat

Method used

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Examples

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Embodiment Construction

[0063] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0064] The refrigerating apparatus 1 of the present embodiment is an apparatus for cooling the inside of a container used for sea transportation or the like. This refrigeration device 1 includes a refrigerant circuit 10 in which a refrigerant is circulated to perform a vapor compression refrigeration cycle.

[0065] In the refrigerant circuit 10 , a compressor 11 , a condenser 12 , an expansion valve 13 , and an evaporator 14 are connected as main components.

[0066] The above-mentioned compressor 11 is constituted by a fixed-capacity scroll compressor whose rotation speed of a compressor motor is constant. The above-mentioned condenser 12 is arranged outside the refrigerator, and constitutes a so-called air-cooled condenser. In the vicinity of the condenser 12, an external fan 15 for sending outside air to the condenser 12 is provided. In addition, heat exchange...

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PUM

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Abstract

When in the 1 operation the temperature inside is maintained at target temperature by an evaporator, the cooling power of the evaporator is increased so as to carry out the 2 operation for temperature inside lowering. When in the 2 operation the temperature inside reaches lower limit temperature (Tmin), the compressor stops so as to carry out the 3 operation. When in the 3 operation the temperature inside reaches upper limit temperature (Tmax), the compressor restarts so as to carry out the 1 operation.

Description

technical field [0001] The present invention relates to a refrigerating device with a cooling heat exchanger for cooling the inside of a refrigerator, and in particular to an energy-saving operation method of the refrigerating device. Background technique [0002] Conventionally, freezers for cooling the interior of refrigerators, freezers, and the like have been known. [0003] For example, Patent Document 1 discloses a refrigeration device that cools the interior of containers used for marine transportation and the like. The refrigeration unit comprises a refrigerant circuit connected to a compressor, a condenser, an expansion valve and a cooling heat exchanger (evaporator). In the refrigerant circuit of this refrigerating apparatus, a refrigerant is circulated to perform a vapor compression refrigeration cycle. As a result, the refrigerant flowing through the cooling heat exchanger absorbs heat from the interior air and evaporates to cool the interior air. In this refr...

Claims

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Application Information

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IPC IPC(8): F25B1/00
Inventor 田中滋人川胜纪育
Owner DAIKIN IND LTD
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