Expansion and check valve combination

Details Expansion and check valve combination Expansion and check valve combination

1989-02-10

1990-10-23

Wayner, William E.

Automatic temperature and humidity regulation

Thermostatic

With pressure control

623246, 1375121, 137599, G05D 2700, F25B 1300

Patent

active

049645676

ABSTRACT:
This combination expansion valve and check valve (18) includes a valve body (22) having an inlet (24) and a outlet (26). A control valve (28) is disposed between the inlet and the outlet which controls flow through the valve when refrigerant flow is normal and pressure is higher at the inlet than the outlet. A by-pass conduit (60) is connected between the inlet and the outlet and includes an external conduit (62) and a passage (70) within the valve communicating with the outlet. A check valve (58) is disposed within the passage which selectively blocks flow through the conduit. The check valve includes a floating disc (66) moving between spaced check valve ports (61, 63) to block flow through the conduit when the expansion valve is operating and to permit flow through the conduit when flow is reversed. Two identical valves (18a) and (18b) are reversely connected to tandem to operate alternatively as expansion valves in a heat pump system (10).

REFERENCES:
patent: 2323480 (1943-07-01), MacDougall
patent: 3461681 (1969-08-01), Smith et al.
patent: 4214698 (1980-07-01), Josefsson
patent: 4852364 (1989-08-01), Seener et al.

Affiliated with

Also associated with

Rating

Expansion and check valve combination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Expansion and check valve combination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expansion and check valve combination will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-761058