Refrigeration – Automatic control – Refrigeration producer
Patent
1989-08-09
1990-11-20
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62222, 25112909, F25B 4104
Patent
active
049708724
ABSTRACT:
Blocking valve for refrigeration or air conditioning systems, of the type which includes: a hermetic compressor driven by an electric motor, a condenser, an evaporator, a capillary tube between the condenser and the evaporator, and a blocking valve between the condenser and the capillary tube. The blocking valve has a housing (42) defining an inside chamber with inlet and outlet passage in fluid communication with the condenser (31) and, respectively, with the capillary tube (32). A magnetic slide (41) installed in the chamber can be displaced between an opening position and a closure position of the valve. Electromagnetic elements (46, 47) assembled in the housing (42) are selectively and automatically energized during a period of time sufficient to cause the displacement of the slide (41) from one operating position to another in accordance with an operating condition of the system, the slide (41) being retained in its operating positions by action of non-electromagnetic forces.
REFERENCES:
patent: 1909893 (1933-05-01), Potter
patent: 2856484 (1958-10-01), Fairbanks
patent: 4843833 (1989-07-01), Polkinghorne
Berwanger Egidio
Schwarz Marcos G.
Empresa Brosileria de Compresseres S/A-EMBRACO
Tanner Harry B.
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