A switch device applied to an instant thermoelectric water heater

Abstract

The invention discloses a switch device applied to an instant thermoelectric water heater, which includes a control panel, a micro switch, a first driving member, a first pressure spring, a water chamber and a solenoid valve arranged on the water inlet pipe of the water heater, the water chamber one There is a diaphragm on the side, and the water inlet pipe between the solenoid valve and the water inlet of the water heater tank communicates with the water cavity through the first channel and the second channel. When the first signal is sent to the control board, the control board opens the solenoid valve after receiving the first signal, water enters the inner tank and the water cavity, the deformation of the diaphragm drives the first driving part to touch the contact of the micro switch, and the micro switch connects Turn on the power supply of the heating tube; when the water and electricity switch is connected to the first channel, the second signal is sent to the control board, the pressure of the water cavity is released, the micro switch disconnects the power supply of the electric heating tube, and the control board receives the second signal and delays the set time Close the solenoid valve. The invention has the function of delaying water shut-off, high working reliability and low manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of electric water heater manufacturing, in particular to a switch device applied to instant thermoelectric water heaters. Background technique [0002] The existing instant thermal electric water heater has a small inner tank volume and a large heating power of the electric heating tube, so if the water is turned on again immediately after the water is turned off, the outlet water temperature will be very high, which is easy to burn people. [0003] In order to avoid scalding people when the water comes out, most of the current instant electric water heaters are equipped with a delay water shut-off control device. One of the existing delay water shut-off control devices is a mechanical control structure. Although its manufacturing cost is relatively low, it must achieve delay The water shut-off function has a complex structure, low reliability, and low accuracy of delay time control; the other is a control s...

AI Technical Summary

Problems solved by technology

[0002] The existing instant electric water heater has a small inner tank volume and a large heating power of the electric heating tube, so if the water is turned on again immediately after the water is turned off, the outlet water temperature will be very high, which is easy to burn people

[0003] In order to avoid scalding people when the water comes out, most of the current instant electric water heaters are equipped with a delayed water shut-off control device. One of the existing delayed water shut-off control devices is a mechanical control structure. Although its manufacturing cost is relatively low, it must achieve a delay The water shut-off function has a complex structure, low reliability, and low accuracy of delay time control; the other is a control structure that combines a circuit controller with a solenoid valve and a micro switch, and the delay time control of this structure is more complex. Accurate, work reliability can also meet the requirements, but the manufacturing cost of the circuit controller is relatively high

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