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Refrigeration cycle device

A refrigeration cycle, refrigerant technology, used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., to achieve the effect of improving performance

Inactive Publication Date: 2017-02-22
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the centrifugal compressor, even with the above structure, there is still room for improvement in terms of performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0054] figure 1 and figure 2 A centrifugal compressor 1A according to an embodiment of the present invention is shown. The centrifugal compressor 1A is connected to a motor or to a turbine and a generator via a rotating shaft 11 . The centrifugal compressor 1A is driven by the rotation of the rotary shaft 11 to compress the working fluid.

[0055] Specifically, the centrifugal compressor 1A includes an impeller 2 fixed to a rotary shaft 11 , a back plate 13 disposed on the back side of the impeller 2 , and a casing 15 for accommodating the impeller 2 . It should be noted that in the following description, for convenience of description, the front side of the back plate 13 in the axial direction of the rotating shaft 11 may be referred to as the front side, and the back side may be referred to as the rear side.

[0056] The impeller 2 includes a main body 20 that smoothly expands in diameter from the smallest diameter portion to the largest diameter portion along the axial...

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PUM

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Abstract

The invention provides a refrigeration cycle device. A centrifugal compressor (1) in a refrigeration cycle device has: an impeller (2), which has a main wing (21) and an aileron (22); a shroud wall (3), which has a shape along the impeller (2), and A suction inlet (12) is formed; a suction chamber (4), which faces the outer side of the shield wall (3). The pumping chamber (4) is connected to a discharge space whose pressure is equal to or lower than that of the working fluid at the suction port (12). The shroud wall (3) is provided with a slit (32), that is, an extraction passage, which guides a part of the working fluid flowing between the pressurized surface of the aileron (22) and the main wing (21) to the extraction chamber (4).

Description

technical field [0001] The invention relates to a refrigeration cycle device. Background technique [0002] Conventionally, there is known a centrifugal compressor configured to return a part of the working fluid passing through the impeller to the suction port. For example, disclosed in Patent Document 1 as Figure 7 A centrifugal compressor 100 as shown. [0003] In this centrifugal compressor 100 , a cylindrical process chamber 130 is provided on a shroud wall 120 surrounding the impeller 110 . A slit-shaped first flow path 131 opens toward the impeller 110 from one end of the processing chamber 130 , and a slit-shaped second flow path 132 opens toward the suction port 101 from the other end of the processing chamber 130 . [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent No. 4100030 [0007] The problem to be solved by the invention [0008] In the centrifugal compressor, even with the above configuration, there is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D17/10F04D29/44F04D29/66F25B1/00F25B1/053F25B1/10
CPCF25B1/053F25B1/10F25B43/006F25B2400/072F25B2400/16F04D29/682F04D29/4213F04D27/023F04D27/0215
Inventor 田口英俊西胁文俊小森晃
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD