The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2007
Filed:
Apr. 04, 2005
Kenichi Saitoh, Ohira, JP;
Masahiko Gommori, Ohira, JP;
Hiroshi Kogure, Sano, JP;
Haruko Ashida, Ohira, JP;
Takeo Ozawa, Oyama, JP;
Tetsunobu Okamura, Ohira, JP;
Kenichi Saitoh, Ohira, JP;
Masahiko Gommori, Ohira, JP;
Hiroshi Kogure, Sano, JP;
Haruko Ashida, Ohira, JP;
Takeo Ozawa, Oyama, JP;
Tetsunobu Okamura, Ohira, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
A hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. Therefore, a large-capacity hot-water storage tank is not needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature. Therefore, it is possible to use a smaller hot-water supply tank.