JPH01113181U

JPH01113181U -

Info

Publication number: JPH01113181U
Application number: JP746788U
Authority: JP
Priority date: 1988-01-22
Filing date: 1988-01-22
Publication date: 1989-07-31
Anticipated expiration: 2003-01-22
Also published as: JPH0617029Y2

Description

[Brief explanation of the drawing]

図面は本考案を具体化した一実施例を示し、第
１図は側断面図、第２図は要部側断面図、第３図
は第１図のＡ―Ａ線断面図、第４図は第１図のＢ
―Ｂ線断面図、第５図は別の断面図である。容量可変機構を構成する容量制御板…２０、ス
プール…２４、冷媒ガス圧室Ｓ…１、制御圧室Ｓ
…２、供給通路…２９Ａ，２９Ｂ、補助制御室…
３０、接続室…３０ａ、背圧室…３０ｂ、可動制
御体…３１、電磁弁機構…３２、放圧通路…３３
ａ，３３ｂ、弁体…３８、押圧ばね…３９、制御
流体としての油…Ｏ、制御流体供給源としてのオ
イルプール部…Ｒｐ。 The drawings show an embodiment embodying the present invention; FIG. 1 is a side sectional view, FIG. 2 is a side sectional view of the main part, FIG. 3 is a sectional view taken along the line A--A in FIG. 1, and FIG. is B in Figure 1
- B line sectional view, FIG. 5 is another sectional view. Capacity control plate...20, spool...24, refrigerant gas pressure chamber S...1, control pressure chamber S, which constitute the variable capacity mechanism
…2, Supply passageway…29A, 29B, Auxiliary control room…
30, Connection chamber...30a, Back pressure chamber...30b, Movable control body...31, Solenoid valve mechanism...32, Pressure relief passage...33
a, 33b, valve body...38, pressing spring...39, oil...O as a control fluid, oil pool portion...Rp as a control fluid supply source.

Claims

[Scope of utility model registration request]

In a compressor that performs capacity control by controlling the supply of control fluid corresponding to a discharge pressure to a control pressure chamber opposing the pressure of a refrigerant gas pressure chamber via a spool using a solenoid valve mechanism, the control fluid supply source corresponding to the discharge pressure and the An auxiliary control chamber is interposed on the supply passage with the control pressure chamber, and the auxiliary control chamber is divided into a connection chamber connected to the supply passage side and a back pressure chamber connected to the suction pressure region, and the control fluid supply source A movable control body is housed in the auxiliary control chamber so as to be able to open and close the side supply passage, and the movable control body is provided with a throttle passage connecting the connection chamber and the back pressure chamber, and a control fluid supply source. When the side supply passage is closed, this supply passage and the throttle passage are set to communicate with each other, and the back pressure chamber and a pressure region equivalent to the suction pressure are connected by a pressure relief passage, and this pressure relief passage A variable capacity mechanism in a variable capacity compressor that has an electromagnetic valve mechanism interposed above it to indirectly control the opening and closing of the supply passage on the control fluid supply source side.