Fujikoki Corporation

Denso Corporation

Kinya Okutsu

Takashi Mogi

Akinori Nanbu

Shigeki Ito

Ryo Matsuda

Kurato Yamasaki

Mafumi Morita

Naoki Kamata

An expansion valve is provided with a valve body including an inlet hole through which a refrigerant flows into a valve chamber, and a valve hole through which the refrigerant flows out of the valve chamber; a valve element configured to adjust an amount of the refrigerant flowing through the valve hole; a power element that is mounted to the valve body and configured to drive the valve element via a valve rod; a first vibration isolation spring provided in the valve chamber and configured to prevent vibration of the valve element; and a second vibration isolation spring that is in contact with the valve rod and configured to prevent vibration of the valve element.

Expansion valve including a vibration isolation spring having a plurality of legs

Expansion valve

To provide a temperature sensing tube for an expansion valve in which a hunting can be prevented by slowing of a temperature reaction rate of an expansion valve, a ceramic sintered member serving as a heat transfer delay member () in a temperature sensing tube () is fixed so as not to directly contact with a tubular member () by fixing springs () provided at both end portions (), whereby a heat transfer from the tubular member () to the ceramic sintered member becomes slow, temperature is not transferred from a mated piping directly via the tubular member, whichever outer surface of the temperature sensing tubecontacts with the piping, and a reaction rate with respect to a temperature rise of the expansion valve can be made slow.

Temperature sensing tube for expansion valve

Growing community of inventors

Tokyo, Japan

Kinya Okutsu