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Hybrid working fluid single compressor double cycle double warmhouse low-temperature refrigeration box

A technology of single compressor and mixed working fluid, which is applied to compressors, compressors with multiple evaporators, coolers, etc., to overcome the difficulty of accurately controlling the temperature

Inactive Publication Date: 2003-10-15
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A double-greenhouse low-temperature freezer with a single compressor is not yet available

Method used

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  • Hybrid working fluid single compressor double cycle double warmhouse low-temperature refrigeration box
  • Hybrid working fluid single compressor double cycle double warmhouse low-temperature refrigeration box

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Embodiment Construction

[0009] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0010] Such as figure 1 As shown, the present invention mainly includes a compressor 1, a condenser 2, a main capillary 3, a solenoid valve 4, an auxiliary capillary 5, a series evaporator 6 of the low temperature chamber A, an independent evaporator 7 of the low temperature chamber A, and a evaporator of the low temperature chamber B. Evaporator 8, liquid reservoir 9.

[0011] The outlet of the compressor 1 is connected to the inlet of the condenser 2, the outlet of the condenser 2 is connected to the inlet of the main capillary 3, and the outlet of the main capillary 3 is connected to the inlet of the solenoid valve 4. One outlet of the electromagnetic valve 4 is connected to the inlet of the series evaporator 6 of the low temperature room A, and the outlet of the series evaporator 6 of the low temperature room A is connected to the in...

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Abstract

The freezer has two low temperature chambers with optionally regulated temperature of -60 to -80 deg.c and -30 to -50 deg.c separately and includes a main circulating loop and an auxiliary circulating loop. The main circulating loop includes compressor, condensator, main capillary, three-way solenoid valve, serial evaporator for low temperature chamber A, low temperature chamber B evaporator andliquid storage; and the auxiliary circulating loop includes compressor, condensator, main capillary, three-way solenoid valve, auxiliary capillary, independent evaporator for low temperature chamber A, and liquid storage. Binary mixed ethylene-propylene working medium is used. The present invention may be used in preserving biological products suitable for two different temperature zones, and has high temperature controlling precision and less irreversible thermodynamic loss.

Description

Technical field: [0001] The invention relates to a low-temperature freezer, in particular to a single-compressor double-cycle double-cycle double-greenhouse low-temperature freezer using a mixed working fluid, which is used for quick freezing of food and low-temperature preservation of biological products, and belongs to the technical field of refrigeration. Background technique: [0002] The current low-temperature freezer, since the temperature inside the freezer is required to reach -80°C, most of them adopt the cascading or two-stage compression type, and the cost is increased due to the addition of a compressor and the increase in the complexity of the structure. Although it is possible for mixed working fluids to achieve a large temperature difference between evaporation and condensation within a small range of pressure changes, how to configure such mixed working fluids for different refrigeration devices remains to be explored. At present, domestic and foreign resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B5/02F25D11/02
Inventor 丁国良张春路
Owner SHANGHAI JIAO TONG UNIV