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External control and travel-changeable type compressor

A compressor and stroke technology, applied in the field of improvement of the control valve housing, can solve problems such as fatigue damage on the contact surface of the power line 83

Inactive Publication Date: 2002-02-20
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When the uncovered power cord 83 is in contact with the outer circumference of the base 86, the long-term vibration of the compressor and the engine with the compressor built in will cause fatigue damage to the contact surface of the power cord 83

Method used

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  • External control and travel-changeable type compressor
  • External control and travel-changeable type compressor
  • External control and travel-changeable type compressor

Examples

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Embodiment Construction

[0019] Reference will now be made to Figure 1 to image 3 , an embodiment of the present invention is described.

[0020] As shown in FIG. 1 , the compressor casing is composed of a front casing 12 , a cylinder block 11 and a rear casing 13 . The front housing 12 is in contact with the front end of the cylinder block 11 . The rear cover 13 is connected to the rear end of the cylinder block 11 through a valve plate 18, a suction valve plate 19, a discharge valve plate 20 and a retainer plate 21 fixed in the middle. A suction chamber 22 and a discharge chamber 23 are located within the rear housing 18 . The control cavity 121 is located in the front housing 12 . The drive shaft 16 passes through the front housing 12 and protrudes into the cylinder block 11, and is rotatably supported by the housing. The swash plate 14 is supported by the drive shaft 16 so that it can rotate integrally with the drive shaft 16 and can tilt relative to the drive shaft 16 . A plurality of pisto...

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Abstract

An external control variable displacement compressor varies its displacement based on the pressure in a control chamber. The compressor has a valve chamber defined in a housing. The valve chamber has an opening to accommodate an electrically operative control valve. The control valve controls pressure in the control chamber due to an external electrical signal. An electrical power supply line is connected to the control valve, the power supply line being in contact with an opening of the valve chamber. The valve chamber opening is surrounded by a circumferential wall. An agonic surface formed on the circumferential wall is constituted of a rounded surface formed by rounding a corner of the opening and / or a chamfered surface formed by chamfering a top of the opening, and is formed on a part of or the entire circumferential wall. The power supply line is to be in contact with the agonic surface. Therefore, it is capable of preventing the power supply line from wearing out.

Description

technical field [0001] The invention relates to a variable-stroke compressor used in a vehicle air conditioner, and more specifically, the invention relates to an improvement of a control valve housing with an externally controlled variable stroke. Background technique [0002] US Patent No. 5,865,604 corresponding to Japanese Laid-Open Patent Publication No. 8-338364 describes a variable stroke compressor whose stroke is controlled by the pressure difference in the control chamber and the suction chamber. The compressor stroke is controlled by inputting refrigerant gas from the discharge chamber to the control chamber through the air supply passage and discharging gas into the suction chamber through the discharge passage. The stroke control structure of the compressor includes an electronically operated control valve located in the passageway of the air supply passage and capable of changing the cross-sectional area of ​​the air supply passage. An energized solenoid of th...

Claims

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Application Information

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IPC IPC(8): F04B39/12F04B27/08F04B27/10F04B27/14F04B27/18F04B39/00
CPCF04B2027/1854F04B27/1036F04B27/1804F04B27/08
Inventor 牧野善洋清水厚视川口真广太田雅树
Owner TOYOTA IND CORP
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