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Compressor and refrigerating cycle apparatus

A technology for compressors and cylinders, which is applied in the field of refrigeration cycle devices and compressors. It can solve the problems of reduced mechanical sealing and volumetric efficiency of compressors, and achieves the effects of high mechanical sealing and lubricity, and high volumetric efficiency.

Active Publication Date: 2014-12-31
TOSHIBA CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the gap space formed between the outer peripheral surface of the drum and the front end surface of the vane is large, the mechanical sealing performance of the vane that divides the cylinder chamber into two into the suction side and the discharge side will decrease, and the volumetric efficiency of the compressor will decrease.

Method used

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  • Compressor and refrigerating cycle apparatus
  • Compressor and refrigerating cycle apparatus
  • Compressor and refrigerating cycle apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0048] figure 1 is a longitudinal sectional view showing the compressor 100 of this embodiment, figure 2 is a schematic diagram showing its main parts.

[0049] The compressor 100 of the first embodiment is a hermetic rotary compressor that compresses a refrigerant, and includes a compression mechanism unit 2 arranged below and an electric motor arranged above in a vertically long cylindrical hermetic casing 1 . Part 3.

[0050] The compression mechanism unit 2 and the motor unit 3 are connected by a shaft 9 , and the rotational power generated by the motor unit 3 is transmitted to the compression mechanism unit 2 via the shaft 9 .

[0051] The compression mechanism unit 2 has an integral cylinder 20 . The integrated cylinder 20 is constituted by integrally forming a lower cylinder portion 5 and a main bearing portion 6 arranged above the cylinder portion 5 to rotatably support a rotary shaft 9 .

[0052] The integral cylinder 20 is provided with a cylinder chamber 4 whic...

no. 2 approach

[0078] here, image 3 It is a cross-sectional schematic diagram showing the main part inside the cylinder chamber 4 of the second embodiment. The compressor 100 of this embodiment includes the compression mechanism part 2, the motor part 3, and the rotating shaft 9 in the airtight casing 1 like the compressor 100 of 1st Embodiment, and the description of the same structure is abbreviate|omitted.

[0079] Such as image 3 As shown, the boundary corner portion 16 of the integrated cylinder 20 is formed as a curved surface with a curvature radius Rc that is concave (recessed) toward the main bearing portion 6 side.

[0080] When the cylinder chamber 4 is formed using a grinding tool such as an end mill in the manufacturing process, only the boundary corner portion 16 is ground by deepening the feed rate of the grinding tool to form the above-mentioned concave boundary corner portion 16 .

[0081] image 3 A dotted line Z of , indicates the radius of curvature Rr1 of the first ...

no. 3 approach

[0085] Figure 4 It is a schematic cross-sectional view showing the main parts inside the cylinder chamber 4 of the third embodiment. Regarding the compressor 100 of the present embodiment, the description of the same configuration as that of the compressor 100 of the second embodiment is omitted. As a structure different from the second embodiment, such as Figure 4 As shown, the boundary corner portion 16 of the integrated cylinder 20 is configured to be concave toward the inner peripheral surface 4a side of the cylinder chamber 4 with a radius of curvature Rc.

[0086] In this case, as in the second embodiment, it is possible to provide a compressor 100 that has higher mechanical sealing properties at the blades 12 and higher volumetric efficiency than the compressor of the first embodiment. In addition, by denting the boundary corner portion 16, the lubricating oil 31 is accumulated, thereby improving the lubricity of the drum 10. As shown in FIG.

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PUM

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Abstract

The invention discloses a compressor and a refrigerating cycle apparatus, capable of inhibiting the decrease of mechanical tightness resulting from the division of the cylinder chamber into an inhalation side and a discharging side and providing high volume efficiency. The compressor comprises an integrally formed cylinder, a drum, and blades, wherein the cylinder is formed by integrally forming the bearing portion and the cylinder portion; the cylinder chamber of the cylinder portion is enclosed by an enclosing member that is separately formed with the cylinder; the drum is configured to rotate in the cylinder chamber in a eccentric manner; and the blades are configured to be capable of conducting reciprocating sliding in a blade groove arranged at the cylinder portion. The radius of curvature of the first corner portion between the periphery of the drum and the side end face of the bearing portion is formed smaller than the that of the boundary corner portion between the internal circumference of the cylinder chamber and the internal surface of the bearing porition.

Description

technical field [0001] Embodiments of the present invention relate to a compressor and a refrigeration cycle device including the compressor. Background technique [0002] As a general compressor, there is known a rotary compressor in which fluid is compressed by eccentrically rotating a drum in a cylinder chamber of a compression mechanism. The compression mechanism unit of such a compressor includes: a cylinder unit having a cylinder chamber surrounded by an inner peripheral surface of the cylinder; a closing member supporting a rotating shaft and sealing the cylinder chamber; The vanes come into contact with the outer peripheral surface of the drum, and divide the cylinder chamber into two, the suction side and the discharge side. [0003] In addition, the above-mentioned compressor further includes a compression mechanism unit in which the cylinder unit and the bearing unit are integrally formed. [0004] In the case where the cylinder portion is integrally formed with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356
Inventor 富永健北市昌一郎平山卓也平野浩二
Owner TOSHIBA CARRIER CORP