Apparatus for detecting composition of refrigerant and method th

Details Apparatus for detecting composition of refrigerant and method th Apparatus for detecting composition of refrigerant and method th

1993-09-30

1995-05-02

Tanner, Harry B.

Refrigeration

With indicator or tester

Condition sensing

62114, F25B 4902

Patent

active

054108870

ABSTRACT:
A mixed-refrigerant comprising two or more types of refrigerants having different boiling points is enclosed in a refrigerating cycle and a capacitance sensor is used as a device for detecting a composition of the mixed-refrigerant. The electrostatic capacitance sensor is disposed in an evaporation portion of the refrigerating cycle. The refrigerating cycle has a refrigerant composition calculating device for calculating a composition of the refrigerant in the refrigerating cycle in accordance with an output signal from the capacitance sensor and an adequate composition judging device for judging whether or not the composition of the mixed-refrigerant circulating in the refrigerating cycle is in an adequate state in accordance with an output signal from the refrigerant composition calculating device.

REFERENCES:
patent: 5009076 (1991-04-01), Winslow
patent: 5152152 (1992-10-01), Brickner et al.
patent: 5158747 (1992-10-01), Manz et al.
patent: 5239865 (1993-08-01), Salzer et al.

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