Patent Number: 7,823,799

Title: Heat-pump-type water heater

Abstract: A heat source unit includes a compressor, a heat-source-side heat exchanger, an outdoor blower, and a controller for electric devices. A hydrothermal exchange unit accommodates water heat exchangers, water pipes, pumps and a controller, and is connected to the heat source unit via refrigerating pipes and electric wiring. A tank unit has tanks for storing hot water obtained as a result of heat exchange by the water heat exchangers. The hydrothermal exchange unit has a housing. The front, rear, upper, left and right sides of the housing are covered with panels. A bottom plate for the housing is disposed a predetermined distance above the lower end of the housing. The housing accommodates the hydrothermal exchange unit, and a space below the bottom plate of the housing accommodates connectors for the water pipes and refrigerant pipes. This completely prevents freezing of the water pipes, makes use-side units compact, and improves operation efficiency.

Inventors: Sakai; Kunio (Fuji, JP), Konagai; Akira (Fuji, JP), Sasaki; Masahiko (Fuji, JP), Ookoshi; Seiji (Fuji, JP)

Assignee: Toshiba Carrier Corporation

International Classification: F24D 3/08 (20060101); F24D 11/02 (20060101); F24H 1/00 (20060101); F24H 1/18 (20060101)

Expiration Date: 2019-11-02 0:00:00