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Hermetic rotary compressor and refrigeration cycle device

A rotary compressor and refrigeration cycle technology, applied in the direction of rotary piston machinery, mechanical equipment, machines/engines, etc., can solve the problems of increased weight and increased oil volume of sealed rotary compressors

Active Publication Date: 2021-04-02
TOSHIBA CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the corners of the end housings are made closer to spherical surfaces in order to improve the pressure resistance of the airtight housings, the end housings will become larger in the axial direction and the size of the hermetic rotary compressor will increase.
Especially in the case of a vertical structure, if the airtight casing becomes larger in the axial direction, the amount of oil sealed in the airtight casing will increase and the hermetic rotary compressor will become heavier.
The increase in the amount of oil is not preferable from the standpoint of operating costs or saving resources

Method used

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  • Hermetic rotary compressor and refrigeration cycle device
  • Hermetic rotary compressor and refrigeration cycle device

Examples

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Embodiment Construction

[0014] Below, refer to figure 1 as well as figure 2 A hermetic rotary compressor according to one embodiment will be described. figure 1 It is a sectional view showing an example of the hermetic rotary compressor K of the first embodiment. and, figure 1 The configuration of the refrigeration cycle apparatus including the hermetic rotary compressor K is also shown together. In the following description, the hermetic rotary compressor K is simply referred to as compressor K.

[0015] Such as figure 1 As shown, the refrigeration cycle apparatus includes a compressor K, a radiator 2, an expansion device 3, and a heat absorber 4 as main elements. The radiator 2 , the expansion device 3 and the heat absorber 4 are sequentially connected by a refrigerant pipe P. The compressor K is connected between the radiator 2 and the heat absorber 4 . An accumulator 5 is attached to the compressor K. The main elements of the refrigeration cycle device constitute a refrigeration cycle ci...

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Abstract

Provided are a hermetic rotary compressor configured so that the pressure resistance of a hermetic case is increased and so that the hermetic case will not become large, and a refrigeration cycle device provided with the hermetic rotary compressor. A hermetic case (10) is provided with a main case (10a) and an end case (10c) which is fitted in the main case (10a). A first compression mechanism (18A) is provided with a first cylinder (21). A second compression mechanism (18B) is provided with a second cylinder (22). The entire first cylinder (21) is accommodated within the main case (10a) in the axial direction of a rotating shaft (13). At least a part of the second cylinder (22) is inserted in the end case (10c). The maximum distance L from the center of the rotating shaft (13) to the outer periphery of the first cylinder (21) is greater than the maximum distance M from the center of the rotating shaft (13) to the inner periphery of the end case (10c).

Description

technical field [0001] Embodiments of the present invention relate to a hermetic rotary compressor and a refrigeration cycle apparatus including the hermetic rotary compressor. Background technique [0002] The hermetic rotary compressor includes a hermetic case that accommodates a motor unit and a compression mechanism unit. The airtight case is composed of, for example, a cylindrical main case and a cover-shaped end case, and both ends of the main case are covered with end cases having the same diameter to be sealed. of Patent Document 1 figure 1 discloses a rotary compressor in which an end housing having a smaller inner diameter than a main housing is inserted at both ends to seal a hermetic housing. The cylinder disclosed in Patent Document 1 is formed smaller than the inner diameter of the end housing. [0003] In recent years, carbon dioxide refrigerants have been used as working fluids in refrigeration cycle devices. Carbon dioxide refrigerants have a higher oper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356F04C23/00
CPCF04C18/356F04C23/003F04C23/008
Inventor 平山卓也J·F·莫纳斯后藤进矢
Owner TOSHIBA CARRIER CORP
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