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Fixed-frequency multi-connected freezing and refrigerating equipment

A refrigeration equipment, multi-connected technology, applied in the direction of mechanical equipment, lighting and heating equipment, compressors with multiple condensers, etc., can solve the problems of large floor area and high cost of refrigeration equipment, and achieve reduction The equipment occupies an area, reduces energy loss, and saves the effect of using space

Inactive Publication Date: 2021-08-20
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of high cost or large occupied area of ​​refrigeration equipment in the above-mentioned prior art, the present invention proposes a fixed-frequency multi-connected refrigeration equipment

Method used

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  • Fixed-frequency multi-connected freezing and refrigerating equipment
  • Fixed-frequency multi-connected freezing and refrigerating equipment
  • Fixed-frequency multi-connected freezing and refrigerating equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The fixed-frequency multi-connected refrigeration and refrigeration equipment in this embodiment adopts the first type of liquid vaporization part 23 , and the load connection part 4 of the equipment includes three evaporation units 40 .

[0066] In this embodiment, the load connecting portion 4 is connected with three evaporators, namely evaporator A, evaporator B and evaporator C. Before the equipment works, the ambient temperature of the environment where the evaporator A, the evaporator B and the evaporator C are located is all between 35°C and 43°C.

[0067] When the evaporator A, evaporator B and evaporator C are all open, the suction pressure of the compressor 11 is relatively high, and the first valve 34 on the liquid bypass line 3 is closed; at this time, the refrigerant flows from The output end of the compressor 11 enters the compressor 11 after passing through the first condenser 21 , the liquid storage part 22 , the evaporator group, and the vapor-liquid se...

Embodiment 2

[0072] The fixed-frequency multi-connected refrigeration and refrigeration equipment in this embodiment adopts the second type of liquid vaporization part 23 , and the load connection part 4 of the equipment includes three evaporation units 40 .

[0073] In this embodiment, the load connecting portion 4 is connected with three evaporators, namely evaporator A, evaporator B and evaporator C. Before the equipment works, the ambient temperature of the environment where the evaporator A, the evaporator B and the evaporator C are located is all between 35°C and 43°C.

[0074] When the evaporator A, evaporator B and evaporator C are all open, the suction pressure of the compressor 11 is relatively high, the first valve 34 on the liquid bypass line 3 and the first valve 34 on the gas bypass line 233 The third valves 235 are all closed; at this time, the refrigerant passes through the second condenser 236, the first condenser 21, the liquid storage part 22, the evaporator group, and t...

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Abstract

The invention discloses fixed-frequency multi-connected freezing and refrigerating equipment. The fixed-frequency multi-connected freezing and refrigerating equipment comprises a compression part, a condensation part, a liquid bypass pipeline and a load connecting part, wherein the compression part is used for compressing a refrigerant, and the condensation part is used for condensing the refrigerant; the output end of the condensation part communicates with the input end of the liquid bypass pipeline and the input end of the load connecting part correspondingly, and the output end of the liquid bypass pipeline and the output end of the load connecting part communicate with the input end of the compression part correspondingly; the load connecting part comprises a plurality of evaporation units which are connected in parallel, and each evaporation unit comprises a front valve and a rear valve; one end of each front valve is connected with the input end of the load connecting part, and the other ends of the front valves are connected with the input ends of evaporators; and one end of each rear valve is connected with the output end of the load connecting part, and the other ends of the rear valves are connected with the output ends of the evaporators. According to the fixed-frequency multi-connected freezing and refrigerating equipment, the possibility that a fixed-frequency compressor drives the plurality of evaporators under different working conditions to work is achieved, the occupied area of the equipment is reduced, the use space is saved, and the cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a fixed-frequency multi-connected refrigeration equipment. Background technique [0002] With the development of the economy, refrigeration equipment plays an increasingly important role in the process of food preservation, and the performance and energy saving of compression condensing units used for refrigeration and refrigeration have attracted more and more attention. Among the compression condensing units currently used for refrigeration and refrigeration, the multi-connected type is mainly realized by using the variable frequency compressor to drive multiple loads or placing multiple compressors in one unit to control multiple loads respectively, while the fixed frequency compressor controls multiple loads. It is rare to have more than two loads. This is mainly because when the fixed-frequency compressor controls multiple loads, the cooling capacity required by the lo...

Claims

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Application Information

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IPC IPC(8): F25B5/02F25B6/04F25B41/40F25B41/20F25B43/00F25B49/02
CPCF25B5/02F25B6/04F25B43/00F25B49/02
Inventor 赵娟张忠斌
Owner NANJING NORMAL UNIVERSITY