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Turbo refrigerator

A turbo refrigerator and impeller technology, which is applied in refrigerators, compressors using turbines, refrigeration and liquefaction, etc., can solve the problems of increased pressure loss of cooling medium, increased flow resistance of cooling medium, and reduced refrigeration capacity of turbo refrigerators, etc.

Active Publication Date: 2011-10-19
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when a check valve is provided in the flow path, the flow resistance to the cooling medium increases, and the pressure loss accompanying the flow of the cooling medium increases.
When the pressure loss increases, the cooling capacity of the turbo refrigerator during normal operation decreases

Method used

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Embodiment Construction

[0015] Below, refer to figure 1 and figure 2 Embodiments of the present invention will be described. In addition, in each drawing used for the following description, the scale of each member is appropriately changed in order to make each member a recognizable size.

[0016] figure 1 It is a block diagram which shows the schematic structure of the turbo refrigerator 1 of this embodiment.

[0017] The turbo refrigerator 1 of the present embodiment is installed in a building, a factory, or the like in order to generate cooling water for air conditioning, for example. Furthermore, the turbo refrigerator 1 of the present embodiment includes a turbo compressor 2 , an inverter 3 (braking device), a condenser 4 , and an evaporator 5 .

[0018] The turbo compressor 2 compresses the cooling medium gas X1 , which is a gaseous cooling medium, to generate the compressed cooling medium gas X2 . The turbo compressor 2 is connected to the first flow path R1 through which the cooling med...

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PUM

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Abstract

A turbo refrigerator includes a condenser that cools and liquefies a compressed refrigerant, an evaporator that vaporizes the liquefied refrigerant and takes away heat of vaporization from a cooling object, thereby cooling the cooling object, and a turbo compressor that compresses the refrigerant vaporized by the evaporator by rotation of an impeller driven to rotate by an electric motor, and supplies the compressed refrigerant to the condenser. Moreover, the turbo refrigerator includes a braking device that operates the electric motor as a generator when the impeller is urged to rotate by the vaporized refrigerant, so as to brake the rotation of the impeller.

Description

technical field [0001] The present invention relates to a turbo refrigerator. This application claims priority based on Japanese Patent Application No. 2010-092314 filed in Japan on April 13, 2010, the contents of which are incorporated herein by reference. Background technique [0002] As a refrigerator for cooling or freezing an object to be cooled such as water, a turbo refrigerator having a turbo compressor that compresses and discharges a cooling medium in a gaseous state is known (for example, see Japanese Patent Laid-Open No. 2007-177695). The turbo compressor compresses the cooling medium by the rotation of the impeller driven and rotated by the electric motor. [0003] The cooling medium compressed by the turbo compressor is supplied to the condenser to be cooled and liquefied. The liquefied cooling medium is supplied to the evaporator and evaporated in the evaporator. When the cooling medium evaporates, the heat of vaporization is taken away from the object to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B11/00
CPCF25B1/053
Inventor 杉谷宗宁藤咲克弥
Owner DAIKIN IND LTD