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Low temperature refrigerator

A refrigerator and low temperature technology, applied in the field of refrigerators, can solve the problems that the refrigerator is difficult to reach -40°C and lower, the temperature of the compartment is not low enough, and the freezing speed and storage effect of items are limited, so as to improve the preservation effect and prolong the The effect of fast storage time and freezing speed

Inactive Publication Date: 2006-10-18
CHANGHONG MEILING CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

The temperature of the compartment is not low enough, which limits the freezing speed and storage effect of items
[0003] Several refrigerants commonly used in household refrigerators (including R12, R134a, R600a, etc.) are limited by the thermodynamic properties of the refrigerant itself, and it is difficult for refrigerators to reach -40°C and lower temperatures

Method used

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Embodiment Construction

[0011] In this embodiment, in the compartments of the refrigerator, the temperature of at least one compartment is not higher than -40°C.

[0012] see figure 1 In a specific implementation, in a refrigerator refrigeration system including a compressor 6, a condenser 7, a filter 8, a capillary tube 1 and an evaporator 4, at the entrance of the capillary tube 1, a switch that can reduce the temperature of the refrigerant at this position is provided. Heater3. The heat exchanger 3 uses the evaporator outlet pipeline 5 as a heat absorber, and the capillary inlet pipeline 2 as a radiator, forming heat exchange between them.

[0013] Referring to Fig. 2, according to the existing structure, in the refrigeration system with multiple evaporators, the solenoid valve group 9 should be set in the capillary inlet pipeline 2 of each evaporator, therefore, in the heat exchanger 3 is The solenoid valve group inlet pipeline 10 is used as a radiator.

[0014] In this embodiment, a non-azeot...

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Abstract

The low temperature refrigerator features that it has at least one of its compartments in the temperature not higher than -40 deg.c. When food is frozen, it begins to freeze at 0 deg.c and obtains greatest ice crystal volume at -4 deg.c, at which the ice crystal inside food is easy to piece cell membrane to cause nutrient loss. Therefore, raising the freezing speed to make food past the ice crystal temperature in shortest time can reach excellent freshness preventing effect. The present invention can raise the freshness degree of the frozen food.

Description

Technical field: [0001] The present invention relates to refrigerators. Background technique: [0002] According to the national standard "Household Refrigeration Appliance Refrigerator-Freezer" GB / T 8059.2-1995 and "Household Refrigeration Appliance Frost Freezer, Frost Freezer Freezer, Frozen Food Storage and Frost Freezer" GB / T 8059.4 -1993 regulations, the minimum temperature requirement for the compartments of ordinary household refrigerators is not higher than -18°C. The temperature of the compartment is not low enough, which limits the freezing speed and storage effect of the items. [0003] Several refrigerants (including R12, R134a, R600a, etc.) commonly used in household refrigerators are limited by the thermodynamic properties of the refrigerant itself, and it is difficult for refrigerators to reach -40°C and lower temperatures. Invention content: [0004] The present invention provides a low-temperature refrigerator in order to avoid the disadvantages of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D11/04F25B40/06
Inventor 魏邦福辛海亚
Owner CHANGHONG MEILING CO LTD
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