JPS6125584U - variable capacity compressor - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図は第１実施例の斜板式圧縮機を示す縦
断面図、第３図は第１図におけるＡ−Ａ線断面図、第４
図は吐出系のガス流れ部を示す部分縦断面図、第５図及
び第６図は第２実施例のクランク式圧縮機を示す縦断面
図、第７図は同じく正断面図、第８図は第７図における
Ｂ−Ｂ線断面図である。 シリングブロック・・・１，２，６５、ハウジング・・
・５． ６， ６６、シリンダボア・・・１７，６
４、吐出室・・・２１．２２，７０，７１、吸入室・・
・２３，２４．７２、吸入通路・・・２５．２６、吸入
フランジ・・・２７、吐出通路・・・２８，２９、吐出
フランジ・・・３０、逆止弁・・・３５．９７、吐出口
・・・３８，３９，７３，７４、吐出弁・・・４２．
４３， ７６，９０、連通孔・・・４７、連通路・・・
４９、連絡通路・・・５０，８９、円形凹所・・・５１
，８０、容量切換弁・・・５２，８１、スプリング・・
・５４，８３、クランク室・・・６５ａ１副吸入室・・
・９３。1 and 2 are longitudinal sectional views showing the swash plate compressor of the first embodiment, FIG. 3 is a sectional view taken along line A-A in FIG.
The figure is a partial vertical cross-sectional view showing the gas flow part of the discharge system, Figures 5 and 6 are vertical cross-sectional views showing the crank type compressor of the second embodiment, Figure 7 is also a front cross-sectional view, and Figure 8 is a sectional view taken along the line B-B in FIG. 7. Schilling block...1,2,65, housing...
・5. 6, 66, cylinder bore...17,6
4, Discharge chamber...21.22,70,71, Suction chamber...
・23, 24.72, Suction passage...25.26, Suction flange...27, Discharge passage...28, 29, Discharge flange...30, Check valve...35.97, Discharge Outlet...38, 39, 73, 74, discharge valve...42.
43, 76, 90, communication hole...47, communication path...
49, Communication passage...50, 89, Circular recess...51
,80, Capacity switching valve...52,81, Spring...
・54, 83, crank chamber...65a1 sub-suction chamber...
・93.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複数の圧縮室及び吐出室を備えた多気筒圧縮機において
、吐出弁を弁板に固定するとともに、一部の吐出室と斜
板室又はクランク室とを弁板及びシリンダブロックに形
成した連絡通路により連通し、前記吐出室内には前記弁
板と接離可能に対応して前記連絡通路を開閉する容量切
換弁を設け、該容量切換弁をスプリングを介して常には
開き位置に浮上せしめるとともに、該切換弁の背面に冷
凍回路の吐出圧を作用させることで該切換弁を正規の閉
鎖位置に保持させるようになし、さらに前記吐出室と吐
出フランジ側とをつなぐ通路には前記切喚弁の正規の閉
鎖位置への変位に対応して該通路を開放する逆止弁を設
けたことを特徴とする可変容量圧縮機。In a multi-cylinder compressor equipped with a plurality of compression chambers and discharge chambers, the discharge valve is fixed to the valve plate, and some of the discharge chambers and the swash plate chamber or crank chamber are connected by a communication passage formed in the valve plate and the cylinder block. A capacity switching valve that opens and closes the communication passage is provided in the discharge chamber so as to be able to come into contact with and separate from the valve plate, and the capacity switching valve is normally floated to an open position via a spring. By applying the discharge pressure of the refrigeration circuit to the rear surface of the switching valve, the switching valve is held in the normal closed position, and furthermore, the switching valve is provided with a passage connecting the discharge chamber and the discharge flange side. 1. A variable displacement compressor comprising a check valve that opens the passage in response to displacement of the variable capacity compressor to a closed position.