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Expansion machine for refrigeration cycle

A refrigeration cycle and expander technology, which is applied in the direction of refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of energy conversion efficiency reduction, etc., and achieve the effect of improving efficiency and energy conversion efficiency

Inactive Publication Date: 2008-08-27
西安交通大学流体机械及圧缩机国家工程研究中心 +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the high-pressure refrigerant is sprayed onto the small bucket blade, the gaseous working fluid transferred to the rear bucket blade will flow countercurrently and push the back of the next bucket blade, thereby causing a blow to the next runner. Braking action, resulting in reduced energy conversion efficiency

Method used

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  • Expansion machine for refrigeration cycle
  • Expansion machine for refrigeration cycle
  • Expansion machine for refrigeration cycle

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Embodiment Construction

[0028] The expander embodiment of the present invention will be described in detail below with reference to the accompanying drawings and a refrigeration cycle system using a turbo generator.

[0029] The composition of the refrigerating cycle system is shown in FIG. 1 . The refrigerating medium (for example: HFC) sealed in the refrigerating cycle system 1 performs a refrigerating cycle in a closed system. The refrigeration cycle system 1 is mainly composed of a compressor 2 , a condenser 3 , an expander 4 , an evaporator 5 , and a turbine generator 6 . The refrigeration cycle process of the device is shown in Figure 2, which is a p (pressure)-h (specific enthalpy) schematic diagram of the refrigeration cycle, and curve a is the saturation line. During the refrigeration cycle, the refrigerant medium undergoes repeated evaporation→compression→condensation→expansion state changes. During the compression process of A→B, the refrigerant medium coming out of the evaporator 5 is in...

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Abstract

The invention relates to an expansion machine for the refrigeration cycle, belonging to the refrigeration technical field. The expansion machine comprises an expansion turbine (10) and a nozzle (41) for injecting the refrigerating working substance to the expansion turbine (10), wherein, the expansion turbine (10) comprises a disc-shaped body part (11) and a plurality of periphery protrusions (12) which have injection-receiving surfaces (121) and periphery surfaces (122) and extend in radial along the body part (11); wherein, the injection-receiving surfaces (121) are parallel with the radial of the disc-shaped body part (11); the periphery surfaces (122) are perpendicular to the radial of the disc-shaped body part (11). The expansion machine for the refrigeration cycle has the characteristic that the energy recovery efficiency of the expansion turbine is raised by the simple structural design.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to the structural design of an expander including an impact expansion turbine for a refrigeration cycle. Background technique [0002] In a commonly used refrigeration device, the refrigerant is compressed, condensed, expanded, and evaporated in a closed refrigerant cycle. In the refrigeration cycle process, the refrigerant is first adiabatically compressed into high-pressure steam in the compressor, then released into a liquid in the condenser, then expands isenthalpically through the throttle valve, evaporates into steam after absorbing heat in the evaporator, and then returns to compression machine. In the above-mentioned cycle process, in order to improve the thermal efficiency, some refrigeration devices will replace the throttling valve with the impingement expansion turbine. [0003] In the impingement expansion turbine of the refrigeration device, the hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/06
CPCY02E10/223Y02E10/20
Inventor 贺滔夏春礼赵远扬张薇马静李连生束鹏程桧皮武史小岛诚
Owner 西安交通大学流体机械及圧缩机国家工程研究中心
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