Thermostatic expansion valve

Details Thermostatic expansion valve Thermostatic expansion valve

1992-03-13

1993-08-24

Nilson, Robert G.

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251122, F16K 31126

Patent

active

052382192

ABSTRACT:
This thermostatic expansion valve (12) includes inlet and outlet fittings (22 and 24) connected to a valve body (30) having a diaphragm assembly (40) at one end. A replaceable cartridge (50) is disposed in the valve body (30) below the diaphragm assembly (40) having a passage (58) communicating with the inlet (22) and an end opening of predetermined size to define a valve port (60). A pin (72) is disposed below the valve port (60) and connected to the diaphragm assembly (40) by a pair of pushrods (76) so that the pin assembly (70) responds to modulation of the diaphragm assembly. A spring assembly (80) engages the pin assembly (70) tending to urge said assembly into a closed position.

REFERENCES:
patent: 1513645 (1924-10-01), Smith
patent: 1974975 (1934-09-01), Stein et al.
patent: 2327542 (1943-08-01), Matteson
patent: 2357795 (1944-09-01), Dillman
patent: 2524569 (1950-10-01), Matteson
patent: 2630140 (1953-03-01), Taylor
patent: 2822789 (1958-02-01), Philips
Danfoss Instructions T2/TE2 (HP) N-NM-NL-B dated Apr. 1947.
Alco Controls T1 Series Thermo R Expansion Valves dated Jun. 1991.

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