JPH02149883U

JPH02149883U -

Info

Publication number: JPH02149883U
Application number: JP5960789U
Authority: JP
Priority date: 1989-05-23
Filing date: 1989-05-23
Publication date: 1990-12-21

Description

[Brief explanation of the drawing]

第１図は本考案に従つた往復動圧縮機の一実施
例を示す断面図、第２図は本考案の要部を示す断
面図、第３図は第１図に示す往復動圧縮機におけ
る電気回路図、第４図は第３図におけるタイマ回
路の電気回路図、第５図は第４図におけるスイツ
チと電磁切換弁のタイムチヤート図、第６図は第
１図に示す実施例における駆動手段の回転角度と
駆動手段の駆動トルクとの関係を示す図、第７図
は従来の往復動圧縮機における駆動手段の回転角
度と駆動手段の駆動トルクとの関係を示す図であ
る。１０……往復動圧縮機、１１……シリンダ、１
１ａ……内孔、１２……作動空間、１３……ピス
トン、１４……密閉空間、１５……クランク機構
（駆動機構）、１７……電動モータ（駆動手段）
、１９……クランクケース、２０……シリンダヘ
ツド、２１……吸入口、２２……吐出口、２３…
…吸入路、２４……吸入弁、２６……吐出弁、２
８……連通路、２９……電磁切換弁（可変絞り機
構）、３０ａ……弁座、３１……プランジヤ、３
１ａ……弁部、３１ｃ……絞り孔、３３……ソレ
ノイドコイル、３４……プレート、３５……スプ
リング、３９……タイマ回路。 FIG. 1 is a cross-sectional view showing an embodiment of a reciprocating compressor according to the present invention, FIG. 2 is a cross-sectional view showing the main parts of the present invention, and FIG. Electrical circuit diagram, Figure 4 is an electric circuit diagram of the timer circuit in Figure 3, Figure 5 is a time chart diagram of the switch and electromagnetic switching valve in Figure 4, and Figure 6 is the drive in the embodiment shown in Figure 1. FIG. 7 is a diagram showing the relationship between the rotation angle of the drive means and the drive torque of the drive means in a conventional reciprocating compressor. 10... Reciprocating compressor, 11... Cylinder, 1
1a... Inner hole, 12... Operating space, 13... Piston, 14... Sealed space, 15... Crank mechanism (drive mechanism), 17... Electric motor (drive means)
, 19... crank case, 20... cylinder head, 21... suction port, 22... discharge port, 23...
...Suction path, 24...Suction valve, 26...Discharge valve, 2
8...Communication path, 29...Solenoid switching valve (variable throttle mechanism), 30a...Valve seat, 31...Plunger, 3
1a... Valve section, 31c... Throttle hole, 33... Solenoid coil, 34... Plate, 35... Spring, 39... Timer circuit.

Claims

[Claims for Utility Model Registration] (1) A cylinder, a piston that is slidably fitted into an inner hole of the cylinder and defines a working space in the cylinder at one end thereof, and other parts of the piston. and a drive means for reciprocating the piston via a drive mechanism housed in a sealed space formed on the end side, and the reciprocating movement of the piston causes the piston to enter the working space from the suction port through the suction valve. In a reciprocating compressor that sucks in and compresses low-pressure compressed fluid and discharges high-pressure compressed fluid to a discharge port via a discharge valve, a communication passage is provided that communicates the suction port with the sealed space, and the communication passage is provided with a communication passage that communicates the suction port with the sealed space. A reciprocating compressor characterized in that a variable throttling mechanism is provided that throttles the flow of fluid in the communication passage after a predetermined period of time has elapsed after activation of the drive means. (2) The variable throttle mechanism includes an electromagnetic switching valve that can be selectively switched between a first position that freely allows fluid to flow in the communication passage and a second position that throttles fluid flow in the communication passage. Claim: wherein the electromagnetic switching valve is held at the first position by a microphone circuit for a predetermined time after activation of the driving means, and is held at the second position after the elapse of the predetermined time. The reciprocating compressor described in 1).