EXPANSION VALVE

PROBLEM TO BE SOLVED: To provide a temperature type expansion valve capable of exhibiting excellent function, while preventing control hunting even in a low load of a refrigeration cycle.SOLUTION: In an expansion valve 1, a space surrounded by a body 2, a lower housing 27 and a diaphragm 28 forms a...

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Bibliographische Detailangaben
Hauptverfasser: MIZUMURA KEITA, JONOUCHI TAKASHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a temperature type expansion valve capable of exhibiting excellent function, while preventing control hunting even in a low load of a refrigeration cycle.SOLUTION: In an expansion valve 1, a space surrounded by a body 2, a lower housing 27 and a diaphragm 28 forms a temperature sensitive chamber 54. In a partition wall 62 between a second passage 14 and the temperature sensitive chamber 54, a communication hole 56 is provided on a downstream side with respect to a shaft 33. With this constitution, refrigerant introduced from the second passage 14 to the temperature sensitive chamber 54 can be guided to the communication hole 56 along the wall surface of the downstream side end part of the temperature sensitive chamber 54, and derived to the downstream side of the second passage 14.SELECTED DRAWING: Figure 2 【課題】冷凍サイクルの低負荷時においても制御ハンチングを防止しつつ、良好に機能を発揮することが可能な温度式膨張弁を提供する。【解決手段】膨張弁1において、ボディ2とロアハウジング27とダイヤフラム28とにより囲まれる空間が、感温室54を形成する。第2の通路14と感温室54との間の隔壁62には、シャフト33よりも下流側に連通孔56が設けられる。このような構成により、第2の通路14から感温室54に導入された冷媒を感温室54の下流側端部の壁面に沿って連通孔56に導き、第2の通路14の下流側に導出することができる。【選択図】図2