Switch valve, water heater, hot water supply system and hot water preheating method

Abstract

The invention relates to a switch valve, a water heater, a hot water supply system and a hot water preheating method. The switch valve comprises a valve body and a first valve element. A hot water inlet, a cold water inlet and a water outlet are formed in the valve body. A first channel is arranged between the hot water inlet and the water outlet, a second channel is arranged between the cold water inlet and the water outlet, and the first valve element is arranged on the first channel and the second channel and used for adjusting the opening degree of the first channel and the opening degree of the second channel. A third channel is arranged between the hot water inlet and the cold water inlet and provided with an electromagnetic valve used for controlling the opening degree of the third channel. The parts, from the hot water inlet to the electromagnetic valve, of the hot water inlet, the first channel and the third channel form the hot water end of the switch valve, and a temperature sensor is arranged at the hot water end and used for detecting the temperature of water. According to the switch valve, hot water can be preheated with higher efficiency and lower energy consumption, and meanwhile the cold water using requirement of a user cannot be obviously affected.

Description

technical field [0001] The invention relates to the technical field of water pipeline equipment, in particular to an on-off valve, a water heater, a hot water supply system and a hot water preheating method. Background technique [0002] Water heaters are commonly used water supply equipment in modern homes, and their types include electric water heaters, solar water heaters, and gas water heaters. The water heater generally includes a cold water input port, a hot water output port, and a heating device. Wherein, the cold water input port is used to input cold water to be heated into the water heater; the heating device is used to heat the cold water to be heated to generate hot water; the hot water output port is used to output hot water to the outside. [0003] The hot water outlet of the water heater and the water end need to be connected by a water pipeline. The hot water output from the hot water outlet of the water heater will continuously release heat outward in the...

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Problems solved by technology

[0009] The present invention provides an on-off valve, a water heater, a hot water supply system, and a hot water preheating method to solve the problems of long preheating process, high energy consumption, and preheating affecting the user's normal cold water use requirements and ease of use in the prior art. At least one of multiple technical problems such as mixed water

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