Refrigerant metering device

Details Refrigerant metering device Refrigerant metering device

1990-07-30

1992-03-24

Chambers, A. Michael

Fluid handling

With means for separating solid material from the fluid

137550, 62511, 138 41, F25B 4106

Patent

active

050978667

ABSTRACT:
A refrigerant metering device for a vapor compression refrigeration system. The metering device employs a restrictor fabricated of a porous material to achieve the desired pressure reduction across the device. The porous material is housed in a casing that provides support for the restrictor and enables installation of the device into the system. Any suitable porous material may be used to make the restrictor, but in the preferred embodiments, a porous polyethylene material is used. In the preferred embodiments, a filter is provided upstream in the refrigerant flow path to reduce the possibility of restrictor fouling and resultant system performance degradation. In one embodiment, the filter and restrictor are combined as two sections of an integral filter and restrictor. The device is effective in reducing refrigerant flow noise during both steady state operation and post shutdown transients.

REFERENCES:
patent: 2448315 (1948-08-01), Kunzog
patent: 2576610 (1951-11-01), Kunzog
patent: 2676470 (1954-04-01), Streitz
patent: 3270756 (1966-09-01), Dryden
patent: 3572390 (1971-03-01), McMichael
patent: 3808830 (1974-05-01), Atkinson et al.

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