Vapor compression refrigeration unit

A refrigeration unit and vapor compression technology, applied in the field of economizer, can solve the problems of not being able to make full use of the suction capacity of the compressor and the efficiency reduction of the economizer
CN101556090AInactive Publication Date: 2009-10-14SHANGHAI HANYE REFRIGERATION MACHINERY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HANYE REFRIGERATION MACHINERY
Publication Date
2009-10-14
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a vapor compression refrigeration unit comprising a compressor, a condenser, an evaporator and a flash evaporation cylinder. A liquid inlet at the upper end of the flash evaporation cylinder is connected with the condenser, an air outlet at the upper end of the flash evaporation cylinder is connected with an input port of the compressor through a one-way valve, and a liquid outlet at the lower end of the flash evaporation cylinder is connected with the evaporator through a second throttle valve. The flash evaporation cylinder internally comprises a pair of coaxial throttle orifice plates connected with the liquid inlet, a floating ball mechanism, a liquid baffle extending into the liquid, and a liquid level protection mechanism, wherein one of the coaxial throttle orifice plates is fixed, and the other one rotates; the floating ball mechanism is arranged on the liquid and connected with one of the coaxial throttle valve plates; the baffle plate extending into the liquid is arranged between the liquid inlet and the air outlet; and the liquid level protection mechanism is arranged at a position near the air outlet. The invention has the advantages that the vapor compression refrigeration unit can effectively control the liquid level of refrigerating fluid in the flash evaporation cylinder in time and can well automatically adapt to the running under variable working conditions (partial load working condition and variable working conditions of the condenser) of the compressor.
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Description

technical field

[0001] The invention relates to a vapor compression refrigeration unit, in particular to an economizer in the vapor compression refrigeration unit. Background technique

[0002] A common compression refrigeration system consists of four components: an evaporator, a compressor, a condenser, and an expansion device, as well as two-phase flow pipes connecting these four components.

[0003] In addition to the above basic components, the refrigeration system may also include other components to improve the thermodynamic efficiency of the refrigeration system. Especially in the low-temperature refrigeration system, in order to improve the cooling capacity and efficiency of the refrigeration system, the refrigeration system usually includes an economizer circuit. Such applications of economizer circuits are well known in the field of refrigeration. It is a general term for assembling economizer circuits and screw compressor units with intermediate air holes on a ...

Claims

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