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Variable displacement swash plate type compressor

A technology of swash plate and compressor, which is applied in the direction of liquid variable displacement machinery, bearings of rotary motion, mechanical equipment, etc., and can solve problems such as seizure, durability decline, insufficient lubrication of drive shaft and shaft hole, etc.

Active Publication Date: 2015-06-17
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the above-mentioned conventional compressor, there is concern that the lubrication between the drive shaft and the shaft hole is insufficient, where seizure occurs and durability decreases

Method used

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  • Variable displacement swash plate type compressor
  • Variable displacement swash plate type compressor
  • Variable displacement swash plate type compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] Such as figure 1 As shown in , the compressor in Embodiment 1 includes a housing 1, a drive shaft 3, a swash plate 5, a link mechanism 7, a plurality of pistons 9, a pair of sliding shoes 11a and 11b, an actuator 13 and figure 2 The control mechanism 15 shown in.

[0031] Such as figure 1 As shown in , the housing 1 includes: a front housing 17 located in the front of the compressor; a rear housing 19 located in the rear of the compressor; a first housing between the front housing 17 and the rear housing 19 the cylinder block 21 and the second cylinder block 23 ; and the first valve forming plate 39 and the second valve forming plate 41 .

[0032] In the front case 17, a boss 17a protruding forward is formed. A shaft seal 25 is arranged in the boss 17a. In the front case 17, a first suction chamber 27a and a first discharge chamber 29a are formed. The first suction chamber 27 a is located on the inner peripheral side of the front case 17 . The first discharge cha...

Embodiment approach 2

[0114] In the compressor in Embodiment 2, such as Figure 7 The second support member 46 shown in is pressed to the drive shaft main body 30 instead of the second support member 43b in Embodiment 1. Therefore, in the compressor, the drive shaft 3 is composed of the drive shaft main body 30 , the first support member 43 a, and the second support member 46 .

[0115] In the compressor, instead of the second sliding bearing 22b, the second sliding bearing 22c is provided in the second shaft hole 23b. The second slide bearing 22c also corresponds to a radial bearing in the present invention. It should be noted that a roller bearing may be provided instead of the second slide bearing 22c.

[0116] The second support member 46 is pressed to the rear end side of the drive shaft main body 30 and is located in the second shaft hole 23b. The second support member 46 also corresponds to a cover part in the present invention. A flange 461 is formed at the front end of the second suppo...

Embodiment approach 3

[0122] In the compressor in Embodiment 3, using Figure 8A The first annular member 65a and the second annular member 65b shown in are substituted for the first annular member 61a and the second annular member 61b in the compressor in Embodiment 1. The first ring member 65a and the second ring member 65b are also made of PEEK. The first ring member 65a and the second ring member 65b are also respectively accommodated in the first grooved portion 433 and the second grooved portion 434 and between the second support member 43b and the second shaft hole 23b.

[0123] The first ring member 65 a and the second ring member 65 b have the same configuration and include joint gaps 67 , respectively. This configuration is explained below with reference to the engagement gap 67 of the first ring member 65a as an example.

[0124] Such as Figure 8A with Figure 8B As shown in , the joint gap 67 is formed by a first cutout 670a to a third cutout 670c and a pair of communication groove...

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PUM

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Abstract

In the compressor of the present invention, first and second recessed strip portions are recessed in a second supporting member. First and second annular members are respectively provided in the first and second recessed strip portions. The first and second annular members respectively include joint gap formed by first to third cutouts. The third cutouts function as aperture in the first and second annular members. The first and second annular members respectively move in the first and second recessed strip portions according to a pressure difference between a pressure regulation chamber and a swash plate chamber. Consequently, the compressor adjusts a flow rate of a refrigerant circulating from the pressure regulation chamber to the swash plate chamber and adjusts a supply amount of lubricant supplied to a second sliding bearing and the like.

Description

technical field [0001] The present invention relates to a variable displacement swash plate type compressor. Background technique [0002] Japanese Patent Laid-Open No. 8-105384 discloses a conventional variable displacement swash plate type compressor (hereinafter referred to as compressor). In the compressor, the casing is formed by a front casing, a cylinder block, and a rear casing. A suction chamber and a discharge chamber are respectively formed in the front case and the rear case. A pressure regulating chamber is formed in the rear case. [0003] A swash plate chamber, a plurality of cylinder bores, and a center bore are formed in the cylinder block. A central bore is formed on the rear side of the cylinder. [0004] The drive shaft is inserted through the housing and is rotatably supported in the housing. A swash plate capable of rotating by rotation of the drive shaft is provided in the swash plate chamber. A link mechanism that allows a change in the inclinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B27/08F04B27/14
CPCF04B27/109F04B27/12F04B27/14F04B39/00F16C17/02F04B27/1804F04B2027/1813
Inventor 山本真也铃木隆容本田和也西井圭
Owner TOYOTA IND CORP