Control valve for variable-capacity compressor

A technology for compressors and control valves, which is applied to liquid variable-capacity machinery, variable-capacity pump components, multi-way valves, etc. Reduce the attractiveness and other problems, and achieve the effect of improving the startability and realizing the miniaturization.

Inactive Publication Date: 2019-03-01
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the variable displacement compressor control valve 2' described in the above-mentioned Patent Document 2, when the passage diameter (orifice) of the release passage in the valve is increased to ensure the flow rate in order to improve the startability, the valve internal The outer diameter of the sub-spool that opens and closes the release passage increases, the inner diameter of the cylindrical plunger inserted outside the sub-spool increases, and the area of ​​the upper end (surface) of the plunger facing the attraction element (magnet

Method used

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  • Control valve for variable-capacity compressor
  • Control valve for variable-capacity compressor
  • Control valve for variable-capacity compressor

Examples

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Example

[0048]

[0049] Figure 1 to Figure 3 are longitudinal cross-sectional views respectively showing a first embodiment of the control valve for a variable displacement compressor according to the present invention, figure 1 Indicates that the main valve is open and the sub-valve is closed (in normal control), figure 2 Indicates that the main valve is closed and the auxiliary valve is closed (when the compressor starts transitioning), image 3 Indicates that the main valve is closed and the sub-valve is open (when the compressor is started).

[0050] In addition, in this specification, the description of positions and directions such as up and down, left and right, front and rear, etc., are attached for the convenience of the drawings in order to avoid complicated descriptions, and are not limited to refer to the positions actually assembled in the compressor. ,direction.

[0051] In addition, in each drawing, in order to facilitate the understanding of the invention or th...

Example

[0085]

[0086] Figure 6 to Figure 8 are longitudinal cross-sectional views each showing a second embodiment of the control valve for a variable displacement compressor according to the present invention, Image 6 Indicates that the main valve is open and the sub-valve is closed (in normal control), Figure 7 Indicates that the main valve is closed and the auxiliary valve is closed (when the compressor starts transitioning), Figure 8 Indicates that the main valve is closed and the sub-valve is open (when the compressor is started).

[0087] The control valve 2 of the second embodiment is basically different from the control valve 1 of the above-described first embodiment only in the structures of the plunger 37 and the sub-valve 17 . Therefore, the same reference numerals are attached to the components having the same functions as those of the first embodiment, and the detailed description thereof will be omitted, and only the above-mentioned differences will be describe...

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Abstract

The present invention provides a control valve for variable-capacity compressor having a simple structure, and with which it is possible to ensure the size of the auxiliary valve element part of the auxiliary valve element that opens and closes the internal relief passage, and with which it is possible to improve start-up characteristics and reduce size. The auxiliary valve element (17) is integrated to the plunger (37) for moving the main valve element (15) in the valve opening and closing direction, in such a manner that the auxiliary valve element (17) and the plunger (37) always move together. The auxiliary valve element (17) is inserted into and fixed to the plunger (37).

Description

technical field [0001] The present invention relates to a control valve for variable displacement compressors used in automobile air conditioners and the like. Background technique [0002] In the past, use such as Figure 10 The inclined plate type variable capacity compressor shown in the simple diagram is used as a compressor for automobile air conditioners. This swash plate type variable displacement compressor 100 has: a rotary shaft 101 driven to rotate by an on-vehicle engine, a swash plate 102 mounted on the rotary shaft 101, a crank chamber 104 provided with the swash plate 102, a 102 to reciprocate a piston 105, a discharge chamber 106 for discharging refrigerant compressed by the piston 105, a suction chamber 107 for sucking refrigerant, and a suction chamber 107 for releasing the pressure Pc of the crank chamber 104. The internal release passage (fixed orifice) 108 and so on. [0003] On the other hand, the discharge pressure Pd is introduced from the discharge...

Claims

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Application Information

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IPC IPC(8): F04B27/18
CPCF04B27/1804F04B39/14F04B2027/1827F04B2027/1831F04B2027/1854F04B2027/1859F04B2027/1877F04B2027/1881F04B27/18F16K11/044F16K11/048F16K31/0644
Inventor 久米义之浅野恒坂本骏伊东雅晴
Owner FUJIKOKI MFG CO LTD
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