Title:
SPACE HEATING/COOLING EQUIPMENT
Document Type and Number:
Japanese Patent JP3199419
Kind Code:
B2
Abstract:
PURPOSE: To efficiently charge refrigerant in users' side refrigerant cycle by judging excessively small of refrigerant charging amount when a discharge pressure of a refrigerant pump is smaller than a specified value, judging excessively large of the amount when a differential pressure is larger than a specified value, and displaying it in a room cooler/heater in which a heat source side refrigerant cycle and the user's side refrigerant cycle are separated.
CONSTITUTION: The room cooler/heater comprises a controller 21 having display means 19 for displaying excessively small when a value sensed by refrigerant pump discharge pressure sensing means 15 is smaller than a preset first specified value and excessively large when a value obtained by differential pressure calculating means 16 is larger than a preset second specified value.
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Inventors:
Kenji Hirose
Masao Kuraji
Masao Kuraji
Application Number:
JP29693391A
Publication Date:
August 20, 2001
Filing Date:
November 13, 1991
Export Citation:
Assignee:
Matsushita Cold Machinery Co., Ltd.
International Classes:
F24F5/00; F24F11/02; F25B1/00; F25B7/00; F25B49/02; (IPC1-7): F25B49/02; F24F5/00; F24F11/02; F25B1/00; F25B7/00
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)