JPH0478479U - - Google Patents

Description

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

第１図〜第７図はこの考案の第一実施例を示し
第１図は吸入絞り弁を示す通路全開状態の縦断面
図、第２図は同じく通路の開口量を減少した状態
の縦断面図、第３図ａは第１図のＡ−Ａ線断面図
、第３図ｂは第１図のＢ−Ｂ線断面図、第４図は
スプール案内筒及びスプール位置規制筒を示す斜
視図、第５図は冷房負荷とエバポレータ出口圧力
との関係を示すグラフ、第６図は冷房負荷とエバ
ポレータ出口温度との関係を示すグラフ、第７図
は冷房装置全体を示す回路図、第８図〜第１２図
はそれぞれ第二実施例から第六実施例を示す縦断
面図である。 エバポレータ……５、吸入絞り弁……６、弁ケ
ーシング……７、環状通路……７ａ、蓋体ケーシ
ング……８、導入口……１０、吐出口……１１、
スプール案内筒……１２、スプール位置規制筒…
…１３、弁体としてのスプール弁……１４、感温
式弁体制御手段を構成する第１ベローズ……１５
及び第１密封流体……１６、感圧動作阻止手段を
構成する第２ベローズ……１７、付勢バネ……１
８及び第２密封流体……１９、感温式弁体制御手
段及び感圧動作阻止手段を兼用する一対のバイメ
タル……２９，３０。 Figures 1 to 7 show a first embodiment of this invention. Figure 1 is a vertical cross-sectional view showing the suction throttle valve with the passage fully open, and Figure 2 is a vertical cross-section of the passage with the opening amount reduced. Figure 3a is a sectional view taken along the line A-A in Figure 1, Figure 3b is a sectional view taken along the line B-B in Figure 1, and Figure 4 is a perspective view showing the spool guide tube and spool position regulating tube. , Figure 5 is a graph showing the relationship between cooling load and evaporator outlet pressure, Figure 6 is a graph showing the relationship between cooling load and evaporator outlet temperature, Figure 7 is a circuit diagram showing the entire cooling system, and Figure 8 is a graph showing the relationship between cooling load and evaporator outlet temperature. -FIG. 12 are longitudinal sectional views showing the second to sixth embodiments, respectively. Evaporator...5, Suction throttle valve...6, Valve casing...7, Annular passage...7a, Lid casing...8, Inlet port...10, Discharge port...11,
Spool guide tube...12, Spool position regulation tube...
...13, Spool valve as a valve body...14, First bellows constituting temperature-sensitive valve body control means...15
and the first sealing fluid...16, the second bellows constituting the pressure-sensitive operation blocking means...17, the biasing spring...1
8 and a second sealing fluid...19, a pair of bimetals serving both as a temperature-sensitive valve body control means and a pressure-sensitive operation blocking means...29, 30.

Claims (1)

【実用新案登録請求の範囲】 エバポレータの出口側から供給される冷媒ガス
を導入する導入口及び圧縮機の吸入口側に接続さ
れる吐出口を設けた弁ケーシングと、 前記弁ケーシング内に収容され、冷媒ガスの通
路の開口量を変更可能な弁体と、 前記弁ケーシングと弁体との間に介装され、前
記冷媒ガスの温度変化に基づき、該弁体の開口量
を調整し、冷媒ガスの温度をほぼ一定に保持する
ための感温式弁体制御手段と、 前記弁ケーシング内の冷媒ガスの圧力により前
記弁体が動作されるのを阻止する感圧動作阻止手
段と により構成した冷房装置における圧縮機の吸入絞
り弁。[Claims for Utility Model Registration] A valve casing provided with an inlet for introducing refrigerant gas supplied from the outlet side of the evaporator and a discharge port connected to the suction side of the compressor; , a valve body capable of changing the opening amount of the refrigerant gas passage, and the valve body is interposed between the valve casing and the valve body, and the opening amount of the valve body is adjusted based on the temperature change of the refrigerant gas, and the opening amount of the refrigerant gas passage is adjusted. The valve body is configured to include a temperature-sensitive valve body control means for keeping the temperature of the gas substantially constant, and a pressure-sensitive operation prevention means for preventing the valve body from being operated due to the pressure of the refrigerant gas in the valve casing. A suction throttle valve for a compressor in a cooling system.