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Direct heating electric water heater

An electric water heater, direct heating technology, applied in the field of fast heating electric water heater or instantaneous electric water heater, can solve the problems of high cost, high assembly precision, complex structure, etc., and achieve the effect of low cost, simple and reliable structure

Active Publication Date: 2016-01-06
QINGDAO HEATEC ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of intelligent direct heating electric water heater with time-delayed water-off function can meet the requirements of simple operation, but its cost is high (multiple high-current relays are required), and the microcomputer control circuit board is prone to failure
In addition, there is another type of direct heating electric water heater that uses a purely mechanical design method to enable the electric water heater to realize the function of delaying water shut-off, but its assembly precision is high and the structure is very complicated, so it cannot be widely used.

Method used

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  • Direct heating electric water heater
  • Direct heating electric water heater
  • Direct heating electric water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] refer to Figure 5 shown and assisted by figure 2 As shown, it is a control scheme that uses temperature to delay shutting off water. Connect a normally open temperature control switch in parallel with the mechanical contact switch of the solenoid valve circuit, and then connect it in series to the solenoid valve circuit. The temperature control switch turns on or off the solenoid valve according to the temperature change collected. One of the circuits. More specifically: one end of the solenoid valve 2 that controls the water flow circuit is connected to the neutral line N, and the other end has two channels, one channel is the first micro switch 11 in the gear knob 1, and the other channel is a normally open Temperature control switch 6. To control the heating circuit, the second micro switch 12 is connected in series to the first electric heating tube 31 to form the first heating circuit and the third micro switch 13 is connected in series to the second electric ...

Embodiment 2

[0055] refer to Image 6 shown and assisted by image 3 As shown, it is a control scheme that uses timing to delay shutting off the water. First, a control board is connected in series to the mechanical contact switch of the solenoid valve circuit, and then connected in series to the solenoid valve circuit. The control board uses the switching signal of the mechanical contact switch of the solenoid valve circuit as a trigger signal, The controller starts the timing according to the trigger signal, and after the timing is completed, the controller turns on or off the circuit of the solenoid valve through the relay. More specifically: this embodiment is basically the same as Embodiment 1, and the realization structures of the heating circuit and the total circuit protection are the same, the difference is that one end of the electromagnetic valve 2 controlling the water flow circuit of this embodiment is connected to the neutral line N, The other end is connected to a control ...

Embodiment 3

[0057] refer to Figure 7 shown and assisted by Figure 4 As shown, it is a control scheme that uses a combination of temperature control and timing to delay shutting off the water. First, a control board is connected in series to the mechanical contact switch of the solenoid valve circuit, and then connected in series to the solenoid valve circuit. The control board uses the switching signal of the mechanical contact switch of the solenoid valve circuit as a trigger signal, And the control board uses a temperature detector to collect temperature changes, and the controller starts timing according to the trigger signal. After the controller makes a comprehensive judgment based on the completion of the timing and / or the collected temperature value, the solenoid valve is turned on or off by the relay. loop. More specifically: this embodiment is basically the same as Embodiment 2, and the realization structures of the heating circuit, the water flow circuit and the total circui...

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PUM

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Abstract

The invention relates to an electric water heater, in particular to a direct heating electric water heater, also known as a fast heating electric water heater or an instant electric water heater. The direct heating electric water heater of the present invention has at least a gear knob on the casing, and at least a water flow pipe, an electric heating element and a fluid electric control valve inside the casing. The electric heating element is energized to heat the flowing water in the water flow pipe. The valve is used to control the flow of water in the water flow pipeline. The gear knob is equipped with at least 2 mechanical contact switches. No different combinations to output the combination of several groups of switch states, so as to realize the on-off control of heating and water flow, wherein the mechanical contact switch of the circuit of the fluid electric control valve is connected to a delay control unit to control the fluid electronically. The loop of the valve is closed with a time delay, so as to realize the water heater's flow time delay close control. The invention can intelligently delay shutting off the water, and has a simple and reliable structure.

Description

technical field [0001] The invention relates to an electric water heater, in particular to a direct heating electric water heater, also known as a fast heating electric water heater or an instant electric water heater. Background technique [0002] Direct heating electric water heaters, also known as fast heating electric water heaters or instant electric water heaters, are a type of electric water heater that is different from storage-type electric water heaters with water storage tanks. It uses high-power current to make the electric heating element of the electric heating tube or the electromagnetic coil quickly heat the hot water in the pipeline to generate hot water, so it has the advantage of saving time and space compared with the traditional water storage electric water heater. [0003] Just because of the rapid heating characteristics of this direct heating electric water heater, it has a shortcoming: when the hot water is temporarily turned off when applying soap o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
CPCF24H1/101F24H9/2028
Inventor 侯全舵曾艳洪壹辉
Owner QINGDAO HEATEC ELECTRIC