Unlock instant, AI-driven research and patent intelligence for your innovation.

Capacity control valve

A capacity control and spool technology, applied to valve details, safety valves, balance valves, etc., can solve the problems of poor operating efficiency of variable capacity compressors and increased refrigerant circulation volume

Active Publication Date: 2021-06-22
EAGLE INDS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, there is known a capacity control valve, because although by adopting the inlet side of the variable capacity type compressor, that is, between the discharge chamber and the control chamber to control The method can make the responsiveness good, but the amount of refrigerant circulation required for control increases, and the operating efficiency of the variable capacity compressor becomes poor. Therefore, by adopting the outlet side of the variable capacity compressor, that is, the control chamber The method of controlling between the suction chambers reduces the amount of refrigerant circulation required for control and improves the operating efficiency of the variable capacity compressor (see Patent Document 1)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Capacity control valve
  • Capacity control valve
  • Capacity control valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] refer to Figure 1 to Figure 3 , the capacity control valve of Embodiment 1 will be described. Below, will be from figure 1 The left and right sides when viewed from the front side are described as the left and right sides of the capacity control valve.

[0040] The displacement control valve V of the present invention is incorporated in a variable displacement compressor (not shown) used in an air-conditioning system of an automobile, etc., and by variable control of the pressure of a working fluid (hereinafter referred to as "fluid") which is a refrigerant, To control the displacement of the variable capacity compressor, adjust the air conditioning system to the desired cooling capacity.

[0041] First, a variable displacement compressor will be described. The variable displacement compressor has a casing including a discharge chamber, a suction chamber, a control chamber, and a plurality of cylinders. In addition, the variable displacement compressor M is provid...

Embodiment 2

[0072] Next, refer to Figure 4 The capacity control valve of Example 2 will be described. In addition, the same components as those shown in the above-mentioned embodiments are denoted by the same reference numerals, and overlapping descriptions are omitted.

[0073] The capacity control valve V in Embodiment 2 will be described. like Figure 4 As shown, in this embodiment, the rod 151 is provided with a communication hole 114 as a supply path, and the communication hole extends from the axially right end portion of the small diameter portion 51c formed in a constricted shape to a position closer to the axis than the sliding portion 51d. It opens to the space S1 constituting the storage chamber 30 at the axial position on the right side, and the pressure-sensitive chamber 60 communicates with the storage chamber 30 through the communication hole 114 .

[0074] Thus, the suction pressure Ps from the Ps port 13 can be supplied to the storage chamber 30 through the two flow pat...

Embodiment 3

[0076] Next, refer to Figure 5 The capacity control valve of Example 3 will be described. In addition, the same components as those shown in the above-mentioned embodiments are denoted by the same reference numerals, and overlapping descriptions are omitted.

[0077] The capacity control valve V in Embodiment 3 will be described. like Figure 5 As shown, in this embodiment, the effective area C of the sliding portion 251d is set to be larger than the effective area B of the valve diameter of the rod 251 (B<C), so that when the main valve 50 is closed, the control pressure can Pc acts on the valve opening direction, that is, the axial right, and adjusts the driving force of the solenoid 80 . In this way, by appropriately changing the effective area B of the valve diameter of the rod or the effective area C of the sliding portion, the control characteristics of the rod can also be changed.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The purpose of the present invention is to provide a capacity control valve with which the valve body can be controlled precisely. The capacity control valve (V) comprising a valve housing (10) in which is formed a Ps port (13) through which a suction fluid at a suction pressure passes and a Pc port (12) through which a control fluid at a control pressure passes, a valve body (51), which constitutes a main valve (50) that contacts and separates from a valve seat (10), and which opens and closes communication between the Pc port (12) and the Ps port (13) by means of driving force of a solenoid (80), and a pressure-sensitive body (61) that applies biasing force to the valve body (51) in accordance with peripheral fluid pressure, with the suction fluid being supplied from the Ps port (13) to a pressure-sensitive chamber (60) in which the pressure-sensitive body (61) is arranged, wherein a supply passage (14) to which the suction fluid is supplied is provided in an accommodation chamber (30) accommodating the back-surface side of the valve body (51).

Description

technical field [0001] The present invention relates to a capacity control valve for variably controlling the capacity of a working fluid, for example, a capacity control valve for controlling the discharge rate of a variable capacity compressor used in an automobile air conditioning system according to pressure. Background technique [0002] A variable displacement compressor used in an air-conditioning system such as an automobile includes a rotating shaft driven by an engine, a swash plate connected to the rotating shaft at a variable inclination angle, and a compression piston connected to the swash plate. Change the inclination angle of the swash plate to change the stroke amount of the piston to control the discharge amount of the fluid. Using a capacity control valve that is driven to open and close by electromagnetic force, the suction pressure Ps of the suction chamber that sucks in fluid, the discharge pressure Pd of the discharge chamber that discharges the fluid ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F04B27/18
CPCF04B27/18F04B2027/1831F04B27/1804F16K27/04F16K31/0668F16K17/04
Inventor 叶山真弘福留康平神崎敏智高桥涉白藤啓吾
Owner EAGLE INDS