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Water heater

A water heater and hot water technology, applied in water heaters, fluid heaters, instruments, etc., can solve problems such as burns of users

Inactive Publication Date: 2004-01-14
SANYO ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, due to the supply of hot water at about 100°C, accidents of scalding the user may occur.

Method used

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Embodiment Construction

[0019] A first embodiment of the present invention will be described below. Fig. 1 is an explanatory diagram of a circuit of a heat pump water heater, a hot water storage type water heater applicable to the present invention. The heat pump type water heater is mainly composed of: a heat pump unit A as a heat source, which is composed of a refrigerant line for exchanging heat between refrigerant compressed in a compressor and water by a heat exchanger for heating; a tank unit B, which utilizes a cycle The pump circulates water between the hot water storage tank and the heating heat exchanger, and at the same time discharges hot water from the hot water storage tank.

[0020] The heat pump unit A includes: a high-temperature and high-pressure compressor 1 for sucking compressed refrigerant, a refrigerant-to-water heat exchanger 2 for heating refrigerant and water for heat exchange, and an electric expansion valve 3 as The evaporator 4 of the heat exchanger on the outdoor side, ...

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Abstract

A water heater is safe because the hot water supply temperature detection sensor can detect the fault even if it fails, so the user will not be scalded. It includes: a heat source that heats tap water or water stored in a hot water storage tank to a set temperature; a hot water supply flow sensor that detects the amount of hot water supplied from the above heat source or hot water storage tank; The water supply temperature detection thermistor is used to detect the temperature of the hot water supply; the control device controls the heating amount of the heat source according to the temperature of the hot water supply detected by the hot water supply temperature detection thermistor. A microcomputer is provided which detects the hot water supply flow rate sensor when the hot water supply volume exceeds a prescribed amount (2 liters per minute), and continues the detection by the hot water supply temperature detection thermistor for a prescribed time (10 seconds). If the temperature is lower than the specified temperature (55°C), it is determined that the hot water supply temperature detection thermistor is abnormal.

Description

technical field [0001] The present invention relates to a heat pump type hot water storage water heater utilizing the condensation heat of an electric heater and a refrigerant, and an instantaneous water heater for generating warm water for hot water supply by burning gas and oil. Specifically, it relates to detection of hot water supply. The temperature of the hot water supply temperature detection sensor fault detection device. Background technique [0002] At present, this kind of water heater is a heat pump type heat source that uses the condensation heat of the electric heater and the refrigerant to heat the water in the hot water storage tank, and stores hot water at high temperature. The mixing valve for mixing hot water and low-temperature tap water provides hot water at a temperature set by the user by adjusting the mixing ratio of the high-temperature hot water and low-temperature tap water by detecting the temperature of the mixed hot water with a hot-water supply...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/18F24H9/20
CPCG01N3/20G01N3/22G01N3/34G01N2203/0021G01N2203/0023
Inventor 奥村裕武藤好夫大畑正小堀康博
Owner SANYO ELECTRIC CO LTD
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