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:
Jan. 08, 2008
Filed:
Feb. 10, 2003
Keijiro Kunimoto, Mie, JP;
Takeshi Watanabe, Nara, JP;
Ryuta Kondo, Nara, JP;
Satoshi Matsumoto, Hyogo, JP;
Satoshi Imabayashi, Nara, JP;
Keijiro Kunimoto, Mie, JP;
Takeshi Watanabe, Nara, JP;
Ryuta Kondo, Nara, JP;
Satoshi Matsumoto, Hyogo, JP;
Satoshi Imabayashi, Nara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A flash water heater using a heat pump includes a heat exchanger in which a refrigerant flow path exchanges heat with a water flow path. Tap water is led directly to the water flow path, and hot water supplied from the water flow path is used. The water heater includes at least one of the following elements: 1) a load setter for setting a heating amount in the heat exchanger, and a heating controller for regulating a heating amount in response to an amount set by the load setter; 2) a heater for heating water flowing through the water flow path in the heat exchanger and water flowing the path before and after the heat exchanger; 3) plural compressors; and 4) plural heat-pump cycles. The water heater is excellent in start-up of hot water temperature when the hot water supply starts, controllability, and efficiency.