Expansion valve with noise suppression

Details Expansion valve with noise suppression Expansion valve with noise suppression

1995-04-17

1997-01-28

Sollecito, John M.

Automatic temperature and humidity regulation

Thermostatic

With pressure control

62511, F25B 4109

Patent

active

055971172

ABSTRACT:
An expansion valve used in an air conditioner having a passage for a liquid-phase refrigerant sent from a reservoir to a valve body, and a passage for a vapor-phase refrigerant after passing an evaporator 8. The refrigerant passage includes a valve chamber to control the amount of the refrigerant passing through the valve by means of a member configured to engage with a valve seat. The valve member is operated by a valve driving rod which can move in the axial direction in response to the temperature and pressure of the vapor-phase refrigerant. An orifice is interposed between a liquid-phase refrigerant inlet port and the valve chamber to decrease that bubbles contained in the refrigerant entering into the valve chamber by means of its throttling hole. Also the passage from the valve chamber to the valve seat is tapered to prevent collapse of bubbles.

REFERENCES:
patent: 2327542 (1943-08-01), Matteson
patent: 3842616 (1974-10-01), Orbesen
patent: 4542852 (1985-09-01), Orth et al.

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