Scroll compressor

一种涡旋压缩机、压缩机构的技术，应用在涡旋压缩机领域，能够解决无法有效地增大背压室c面积等问题，达到噪音减少、起动扭矩减小的效果

Active Publication Date: 2017-08-18
MITSUBISHI HEAVY IND THERMAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, since the inner peripheral seal d and the outer peripheral seal e are disposed by forming a seal groove on the thrust surface g of the casing f, there is a limit to enlarging the interval W1 between the inner peripheral seal d and the outer peripheral seal e. Therefore, Cannot effectively increase the area of ​​the back pressure chamber c

Method used

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  • Scroll compressor
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Examples

Experimental program
Comparison scheme
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no. 1 approach

[0055] figure 1 It is a longitudinal sectional view showing an example of the scroll compressor of the present invention. The scroll compressor 1 is incorporated into, for example, an air conditioner of an automobile, is driven by a not-shown engine, compresses refrigerant gas, and supplies it to a refrigerant circuit of the air conditioner.

[0056]The scroll compressor 1 includes a casing 2 in which a rear casing 2 b is fastened to a front casing 2 a by bolts 3 , and a scroll compression mechanism 5 and a back pressure supply mechanism 6 are accommodated in the casing 2 .

[0057] As known, the scroll compression mechanism 5 is structured as follows: a fixed scroll 8 fixed to the housing 2 ( 2 b ) by bolts 7 and the like; an orbiting scroll 10 opposed to the fixed scroll 8 A compression chamber 9 for compressing refrigerant gas, a thrust plate 12 supporting an axial load of the orbiting scroll 10 , and a main shaft 14 for driving the orbiting scroll 10 are formed. The mai...

no. 2 approach

[0072] image 3 (a) and (b) are vertical cross-sectional views showing the back pressure supply mechanism 40 according to the second embodiment of the present invention. The structure of this back pressure supply mechanism 40 is the same as that of the back pressure supply mechanism 6 shown in the first embodiment except for the arrangement structure of the outer peripheral packing 34 which maintains the airtightness of the back pressure chamber 31. Parts are denoted by the same reference numerals and descriptions thereof are omitted.

[0073] In this back pressure supply mechanism 40, the outer peripheral surface 12b of the thrust plate 12 is a cylindrical surface parallel to the inner peripheral surface 37 of the front casing 2a, and the outer peripheral seal ring 34 is fitted on the outer peripheral surface 12b of the thrust plate 12 to form a cylindrical surface. The outer peripheral groove 41 is installed so as to be pressed between the outer peripheral groove 41 and the...

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Abstract

The present invention provides a scroll compressor comprising a scroll compression mechanism having a compression chamber formed between a fixed scroll and an orbiting scroll (10) which face each other, and a thrust plate (12) supporting the thrust load of the orbiting scroll (10); and a back pressure supply mechanism (6) for supplying a portion of a compressed refrigerant gas as back pressure to the back side of the thrust plate (12); wherein the back pressure supply mechanism (6) is provided with a back pressure chamber (31) formed on a thrust face (30) facing the back side of the thrust plate (12), a back pressure supply passage (32) for supplying compressed refrigerant gas to the back pressure chamber (31), and an inner circumference sealing ring (33) and outer circumference sealing ring (34) provided on an inner circumference side and an outer circumference side of the back pressure chamber (31), the outer circumference sealing ring (34) being provided so as to be pressed between the inner circumferential face (37) of a housing (2a) and the outer circumferential face (12a) of the thrust plate (12).

Description

technical field [0001] The present invention relates to a scroll compressor, and in particular, to a scroll compressor preferably suitable for a vehicle air conditioner that requires downsizing. Background technique [0002] A scroll-type compressor used in a vehicle air conditioner includes a fixed scroll and an orbiting scroll. The fixed scroll and the orbiting scroll are each integrally formed with a scroll wrap on one surface side of a disk-shaped end plate. The fixed scroll and the orbiting scroll are made to face each other in a state where the scrolls are meshed with each other, and the orbiting scroll is orbited relative to the fixed scroll, and the compression chamber formed between the scrolls of both sides is moved from the outer periphery to the orbiting scroll. The refrigerant gas is compressed by moving laterally to the inner peripheral side and reducing its volume. [0003] When the scroll compressor is in operation, the reaction force of the compressed refr...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F04C18/02
CPCF04C27/005F04C27/008F04C18/0261F04C18/0215F04C27/001F04C29/0021F04C2240/30F04C2240/60
Inventor太田将弘竹内真实渡边和英
OwnerMITSUBISHI HEAVY IND THERMAL SYST