JPS61142190U

JPS61142190U -

Info

Publication number: JPS61142190U
Application number: JP2530285U
Authority: JP
Priority date: 1985-02-22
Filing date: 1985-02-22
Publication date: 1986-09-02
Also published as: JPH0241356Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る吸気調節装置の断面図、
第２図〜第４図は第１図中Ａ部の各種状態を示す
部分拡大断面図、第５図は第１図の吸気調節装置
を適用したスクリユ圧縮機の機器構成図、第６図
〜第８図は従来の吸気調節装置の断面図である。１……吸気調節装置、２……放気流路開閉部、
３……吸込流路開閉部、４……起動アンロード部
、５……放気口、７……放気弁、８……第１ばね
、９……第２弁心棒、１０……吸気口、１１……
第１ダイヤフラム、１２……吸込流路、１４……
空圧室、１５……吸気弁、１５ａ……弁体、１８
……第１弁心棒、１９……第１座金、２０……第
２ダイヤフラム、２１……油圧室、２３……第２
座金、２４……第２ばね、２５……ピストンロツ
ド。 FIG. 1 is a sectional view of the intake air conditioning device according to the present invention;
2 to 4 are partially enlarged cross-sectional views showing various states of section A in FIG. FIG. 8 is a sectional view of a conventional intake air conditioning device. 1... Intake control device, 2... Air discharge passage opening/closing part,
3... Suction flow path opening/closing part, 4... Starting unloading part, 5... Air discharge port, 7... Air release valve, 8... First spring, 9... Second valve stem, 10... Intake Mouth, 11...
First diaphragm, 12... Suction channel, 14...
Pneumatic chamber, 15... Intake valve, 15a... Valve body, 18
...First valve stem, 19...First washer, 20...Second diaphragm, 21...Hydraulic chamber, 23...Second
Washer, 24...second spring, 25...piston rod.

補正昭６０．５．１６考案の名称を次のように補正する。考案の名称容積形圧縮機の吸気調節装置実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。Amendment May 16, 1980 The name of the invention is amended as follows. Title of the invention Intake air conditioning device for positive displacement compressor The scope of the utility model registration claims and the brief description of the drawings are amended as follows.

【実用新案登録請求の範囲】 (1) 圧縮機本体吐出側の吐出流路に連通させて
設けた放気流路の放気口を開閉する放気弁を、常
時閉状態側に弾性的に付勢して設けた放気流路開
閉部と、圧縮機本体吸込側に接続した吸込流路内
の吸気口の側方に、吸込流路と第１ダイヤフラム
によりしや断し、かつ上記吐出流路と切換弁を介
して接続した空圧室を有するとともに、上記吸気
口を開閉する吸気弁の第１弁心棒を、上記２つの
弁のいずれか一方が閉状態のときには他方の弁を
開状態に押圧するように放気弁の第２弁心棒と同
軸上に突き合わせ可能に設けて、かつ上記第１ダ
イヤフラムを貫通させるとともに、この第１弁心
棒に外嵌させた第１座金により第１ダイヤフラム
と一体作動可能に設けた吸込流路開閉部と、大気
圧側と第２ダイヤフラムによりしや断した油圧室
を上記空圧室に対して吸気口とは反対側に設ける
一方、第２座金を介して上記第２ダイヤフラムと
一体作動可能に、かつこれを貫通させるとともに
、常時弾性力により上記第１弁心棒と同軸上、こ
れに向かつて突き合わせ可能に付勢し、この突き
合わせ方向への移動により上記吸気弁を閉状態に
押圧できるようにピストンロツドを設けて形成し
た起動アンロード部とからなることを特徴とする
容積形圧縮機の吸気調節装置。 (2) 上記吸気弁の弁体部の受圧面積を第１ダイ
ヤフラム部の受圧面積より大きくしたことを特徴
とする実用新案登録請求の範囲第１項記載の容積
形圧縮機の吸気調節装置。[Scope of Claim for Utility Model Registration] (1) An air release valve that opens and closes the air outlet of an air air flow path provided in communication with the discharge flow path on the discharge side of the compressor main body is elastically attached to the normally closed side. The air discharge passage opening/closing part provided in the same manner as above, and the above-mentioned discharge passage which is separated by the suction passage and the first diaphragm on the side of the intake port in the suction passage connected to the suction side of the compressor main body. and a pneumatic chamber connected to the valve via a switching valve, and a first valve stem of the intake valve that opens and closes the intake port, when one of the two valves is in the closed state, the other valve is in the open state. The first diaphragm is connected to the first diaphragm by a first washer that is provided coaxially with the second valve stem of the air release valve so as to be pressed against the second valve stem and penetrates the first diaphragm. A suction flow path opening/closing part provided so as to be able to operate integrally, and a hydraulic chamber separated from the atmospheric pressure side by a second diaphragm are provided on the opposite side of the air inlet from the air pressure chamber, while a second washer is provided. The second diaphragm is operable integrally with the second diaphragm and penetrates through it, and is constantly biased by an elastic force so as to be able to butt coaxially with and toward the first valve stem, and by this movement in the butt direction, the second diaphragm 1. An intake air adjustment device for a positive displacement compressor, comprising a starting unloading section provided with a piston rod so as to be able to press an intake valve into a closed state. (2) The intake air regulating device for a positive displacement compressor according to claim 1, wherein the pressure receiving area of the valve body portion of the intake valve is larger than the pressure receiving area of the first diaphragm portion.

【図面の簡単な説明】第１図〜第３図は本考案の第１実施例である吸
気調節装置の各種状態を示す断面図、第４図は本
考案に係る吸気調節装置の断面図、第５図〜第７
図は第４図中Ａ部の各種状態を示す部分拡大断面
図、第８図は第４図の吸気調節装置を適用したス
クリユ圧縮機の機器構成図、第９図は従来の吸気
調節装置の断面図である。１，１ａ……吸気調節装置、２……放気流路開
閉部、３……吸込流路開閉部、４……起動アンロ
ード部、５……放気口、７……放気弁、８……第
１ばね、９……第２弁心棒、１０……吸気口、１
１……第１ダイヤフラム、１２……吸込流路、１
４……空圧室、１５，１５ａ……吸気弁、１６，
１６ａ……弁体、１９……第１弁心棒、２０……
第１座金、２１……第２ダイヤフラム、２２……
油圧室、２４……第２座金、２５……第２ばね、
２６……ピストンロツド。[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1 to 3 are sectional views showing various states of the intake air conditioning device according to the first embodiment of the present invention, FIG. 4 is a sectional view of the intake air conditioning device according to the present invention, Figures 5 to 7
The figure is a partial enlarged sectional view showing various states of section A in Figure 4, Figure 8 is an equipment configuration diagram of a screw compressor to which the intake air adjustment device of Figure 4 is applied, and Figure 9 is a diagram of a conventional intake air adjustment device. FIG. DESCRIPTION OF SYMBOLS 1, 1a...Intake air adjustment device, 2...Air discharge channel opening/closing part, 3...Suction channel opening/closing part, 4...Start unloading part, 5...Air discharge port, 7...Air discharge valve, 8 ...First spring, 9...Second valve stem, 10...Intake port, 1
1...First diaphragm, 12...Suction channel, 1
4...Pneumatic chamber, 15, 15a...Intake valve, 16,
16a... Valve body, 19... First valve stem, 20...
First washer, 21... Second diaphragm, 22...
Hydraulic chamber, 24...second washer, 25...second spring,
26... Piston rod.

Claims

[Scope of utility model registration request]

An air release passage opening/closing part that is provided by elastically biasing an air release valve that opens and closes an air outlet of an air emission passage that is provided in communication with a discharge passage on the discharge side of the compressor main body toward a normally closed state; , a pneumatic chamber that is separated from the suction flow path by the first diaphragm and connected to the discharge flow path via a switching valve, on the side of the inlet in the suction flow path connected to the suction side of the compressor main body; and a second valve of the exhaust valve so as to press the first valve stem of the intake valve that opens and closes the intake port to open the other valve when one of the two valves is closed. a suction flow path opening/closing part that is provided coaxially with the mandrel so as to be able to butt against it, penetrates the first diaphragm, and is operable integrally with the first diaphragm by means of a first washer that is externally fitted on the first valve mandrel; and a hydraulic chamber separated from the atmospheric pressure side by a second diaphragm is provided on the side opposite to the air intake port with respect to the pneumatic chamber, and is operable integrally with the second diaphragm via a second washer; and a piston rod that penetrates through the piston rod and is always biased by elastic force so as to be coaxial with and abut against the first valve stem, so that the piston rod can press the intake valve to the closed state by moving in the abutting direction. In the intake air conditioning device for a positive displacement compressor, the intake valve has a valve body portion of the intake valve whose pressure receiving area is larger than a pressure receiving area of the first diaphragm portion. Compressor intake air conditioning device.