Electric water heater with sealed outlet for faucet, and water flow switch and heat protector of electric water heater

Abstract

An electric water heater with a sealed outlet for a faucet is provided with a pore membrane water flow switch (9) and a manual outage reset rapid heat protector (25), is small in size, and can be mounted below a rinsing table of a kitchen or a toilet to supply hot water for the faucet. The pore membrane water flow switch (9) for the water heater is used for powering on when water flow of the pore membrane water flow switch reaches a certain value, and powering off when the water flow is excessively low by the aid of a flow-limiting hole (23), a communicating hole (22), a membrane (7), an inner magnetic component (10), an outer magnetic component (11), a microswitch (14) and the like, and is reliable in operation, small in size and high in load power. The manual outage reset rapid heat protector (25) for the water heater is of a structure with a rapid jump heat bimetal sheet, a PTC (positive temperature coefficient) heating unit and a PTC heat-control heat bimetal sheet, and can be used for immediately cutting off electric contacts when the temperature of hot water reaches a set value.

Description

1 technical field [0001] The invention relates to an electric water heater, a water flow switch and a thermal protector thereof, in particular to an electric water heater with a closed outlet fast faucet, a perforated membrane water flow switch and a manual power-off reset type fast thermal protector. 2 background technology [0002] Instant electric water heaters have many advantages such as small size, power saving, and convenient use. Among them, electric water heaters with open outlet taps with a power of about 2KW have been widely used in people's daily life. The disadvantage of this type of faucet water heater is that it can only be installed on the water outlet of a single faucet on the kitchen and bathroom cleaning table, which hinders the appearance of the table top and brings a lot of inconvenience to the table top users. If adopt the outlet closed fast electric water heater of same power and be installed on the water inlet end of faucet, be installed under the tab...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of faucet water heater is that it can only be installed on the water outlet of a single faucet on the kitchen and bathroom cleaning table, which hinders the beauty of the table and brings a lot of inconvenience to the users of the table.

[0004] At present, the water flow switches on the market are all reed switch structures. Such products have large volume, low load power and low working reliability, which cannot meet the requirements of the present invention.

The liquid expansion thermal protector used for water heaters can quickly cut off the heating power of the electric heating tube when the water temperature reaches the set value, but it has problems such as large volume and inconvenient manual reset operation, and it also cannot meet the needs of this project well. requirements for the use of the invention

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