Title:
HEAT PUMP HOT WATER SUPPLIER
Document Type and Number:
Japanese Patent JP3937715
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a heat pump hot water supplier where the rise of durability and operation efficiency is materialized.
SOLUTION: This heat pump hot water supplier is equipped with a refrigerant circulating circuit where a compressor 1, a refrigerant-to-water heat exchanger 2, a pressure reducing device 3 for controlling the flow rate of a refrigerant, and an evaporator 4 are connected in order, a hot water supply circuit where a hot water reservoir 5, a circulation pump 6, and the above refrigerant-to-water heat exchanger 2 are connected in order, and a discharge temperature detection means 17 which detects the discharge temperature of the above compressor 1, and this controls the valve opening of the above pressure reducing device 3 to be constant for a specified time at start of the above compressor 1, and controls the valve opening of the above pressure reducing device 3 so that the discharge temperature of the above compressor 1 may come to the preset objective discharge temperature after passage of the above specified time, so an appropriate refrigerant circulates in the refrigerant circuit at all times, therefore there is no abnormal temperature rise or abnormal pressure rise, consequently this can raise durability and improve the operation efficiency, too.
Inventors:
Masahiro Ohama
Takeshi Watanabe
Satoshi Matsumoto
Takeshi Watanabe
Satoshi Matsumoto
Application Number:
JP2000313148A
Publication Date:
June 27, 2007
Filing Date:
October 13, 2000
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
F24H1/00; F25B1/00; (IPC1-7): F25B1/00; F24H1/00
Domestic Patent References:
| JP4263743A | ||||
| JP63123959A | ||||
| JP60164157A | ||||
| JP61001971A | ||||
| JP59191853A | ||||
| JP4222350A | ||||
| JP5196309A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano