Refrigeration freezer with double-refrigeration loop of raising freezing function

A refrigeration capacity, dual refrigeration technology, applied in the field of dual refrigeration circuit refrigerators and freezers, refrigerators and freezers, can solve the problems of large irreversible losses, achieve the effect of improving refrigeration capacity, simple implementation method, and high efficiency

CN1560546AInactive Publication Date: 2005-01-05SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2005-01-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is double refrigeration loops freezing and chill box which can upgrade the refrigeration ability. It includes a chill compressor, condenser, three-way electromagnetic valve, the first freezing capillary, the second freezing capillary, the freezing evaporator, a chill compressor, a chill condenser, a chill capillary, a chill evaporator, a subcooler, a temperature sensor, controller. In the freezing loop, there has two alternative refrigeration agent loops between the condenser and the evaporator through the three-way electromagnetic valve. When the cold quantity in the freezing chamber is enough, the refrigeration agent from the freezing condenser is cooled through the subcooler and enters the second freezing capillary, the cold quantity of the subcooler is provided by the chill loop. The invention can make the two loops work independently, maintains itself best efficiency, in necessary state, the freezing loop my lend cold quantity form the chill loop in order to increase the freezing ability.
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Description

Technical field:

[0001] The invention relates to a refrigerator-freezer, in particular to a double-refrigeration circuit refrigerator-freezer capable of improving freezing capacity, which is used for food storage and preservation, and belongs to the technical field of refrigeration. Background technique:

[0002] The most commonly used type of household refrigerator at present is a refrigerator-freezer, that is, a refrigerator includes a compartment for food refrigeration and a compartment for freezing. The temperature of the refrigerator should be between 0°C and 10°C, while that of the freezer should be below -18°C.

[0003] In the prior art, the refrigerating system of the refrigerator-freezer mostly adopts a single refrigeration circuit with only one compressor to realize cooling for the refrigerating chamber and the freezing chamber. In order to meet the requirements of the freezer, the evaporating temperature needs to be relatively low, generally around -30°C. At this...

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Embodiment Construction

[0014] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the present invention mainly includes a refrigeration compressor 1, a refrigeration condenser 2, a three-way solenoid valve 3, a first refrigeration capillary 4, a second refrigeration capillary 5, a refrigeration evaporator 6, a refrigeration compressor 7, a refrigeration condenser 8, Refrigeration capillary 9, refrigeration evaporator 10, subcooler 11, temperature sensor 12, controller 13.

[0016] The outlet of refrigeration compressor 1 is connected to the inlet of refrigeration condenser 2, the outlet of refrigeration condenser 2 is connected to the inlet of three-way solenoid valve 3, one outlet of three-way solenoid valve 3 is connected to the inlet of first refrigeration capillary 4, and the other outlet is connected to the inlet of supercooling The high-pressure side inlet of the device 11 is co...