Title:
【発明の名称】冷房システムと冷房方法
Document Type and Number:
Japanese Patent JP3295813
Kind Code:
B2
Abstract:
A refrigeration control system suitable for automotive passenger compartment air conditioning having an electrically operated expansion valve (26) for controlling refrigerant for flow to the evaporator (E). A self-heated thermistor (38) is disposed in the suction return line (32) to the compressor (12) and senses the presence of liquid refrigerant. The system is calibrated to determine the thermistor voltage drop at five degress (5 DEG F) superheat, microcomputer (72) generates a pulse width-modulated control signal from a disclosed governing equation in response to changes in resistance of the thermistor (32) due to the presence of liquid refrigerant; and, the expansion valve (26) regulates refrigerant flow to maintain the five degrees of superheat.
Inventors:
Robert James Torrens
Application Number:
JP6195389A
Publication Date:
June 24, 2002
Filing Date:
March 14, 1989
Export Citation:
Assignee:
EATON CORPORATION
International Classes:
B60H1/32; F25B1/00; F25B41/06; (IPC1-7): F25B1/00
Domestic Patent References:
| JP62129669A | ||||
| JP6041774U | ||||
| JP6291171U |
Attorney, Agent or Firm:
Nobuo Kaida (1 person outside)