Constant-temperature electric heating faucet

An electric faucet and water faucet technology, applied in the field of electricity, can solve the problems of increased water flow and inability to supply water at a constant temperature, and achieve the effect of constant temperature control

Inactive Publication Date: 2014-05-21
SHINAN BRANCH OF QINGDAO BLUEPRINT CULTURE COMM
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AI-Extracted Technical Summary

Problems solved by technology

[0003] The invention proposes a constant temperature electric hot water faucet, which solves the problem that th...
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Method used

[0012] The electric faucet of the present invention controls the size of the output power according to ...
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Abstract

The invention provides a constant-temperature electric heating faucet. The faucet comprises a faucet body, a water flow control switch, a flow sensor, an operational amplifier, a comparator, a UC3842 controller and a flyback converter, wherein the flow sensor is arranged at a water inlet and outputs a real-time water pressure signal; the operational amplifier is connected to an output end of the flow sensor and performs power amplification on the water pressure signal; the comparator compares the water pressure signal with a reference value; a feedback end of the UC3842 controller is connected to an output end of the comparator and outputs a PWM (pulse width modulation) signal with an adjustable pulse width according to a comparison result; and a control end of a switching tube of the flyback converter receives the PWM signal, and an output end of the flyback converter is connected with an electric heating tube.

Application Domain

Technology Topic

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  • Constant-temperature electric heating faucet

Examples

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Example Embodiment

[0009] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0010] Such as figure 1 As shown, a thermostatic electric hot water faucet of the present invention includes: a faucet body and a water flow control switch ( figure 1 Not shown in); flow sensor 10, set at the water inlet, output real-time water pressure signal; operational amplifier 20, connected to the output end of the flow sensor 10, amplify the water pressure signal; comparator 30, The water pressure signal is compared with the reference value; the UC3842 controller 40, whose feedback terminal is connected to the output terminal of the comparator, outputs a PWM signal with adjustable pulse width according to the comparison result; the flyback converter 50, the switch tube The control terminal of receives the PWM signal, and its output terminal is connected to the electric heating tube 60.
[0011] When the rotation angle of the water flow control switch increases, more water flows through the electric faucet, the pulse width of the output signal of the UC3842 controller increases, the output power of the flyback converter increases, and the heating power of the electric heating tube increases , The temperature of the output water stream is maintained at a constant temperature.
[0012] The electric hot water faucet of the present invention controls the output power according to the water inlet water flow pressure, and realizes the constant temperature control of the output water flow.
[0013] The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.
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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

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