Master controller of gas water heater, fan control system and gas water heater

A gas-fired water heater and main controller technology, which is applied to fluid heaters, lighting and heating equipment, etc., can solve problems such as reliability reduction and abnormal fan operation, improve reliability and life, simple connection structure, and easy miniaturization. design effect

Pending Publication Date: 2019-08-02
GUANGDONG MACRO GAS APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most gas water heaters adopt an upward draft structure, and the DC fan is in a high-temperature zone, and the high-temperature environment may cause the reliability of various ICs and other components of the fan electric control board to decrease, and abnormal operation of the fan may occur.

Method used

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  • Master controller of gas water heater, fan control system and gas water heater
  • Master controller of gas water heater, fan control system and gas water heater
  • Master controller of gas water heater, fan control system and gas water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like image 3 As shown in the figure, a gas water heater main controller is characterized in that it includes an integrated main control IC1 and a fan electric control board, the fan electric control board includes: a motor control IC2 and a driving IC3, and the motor control IC2 uses to receive the fan speed signal and communicate with the main control IC1 through the serial port, and the drive IC3 receives the control signal output by the motor control IC2 to drive the fan to work.

[0037] combine Figure 4 As shown, a fan drive circuit 4 is also connected between the main control IC1, the motor control IC2 and the drive IC3, and the fan drive circuit 4 receives the PWM signal output by the main control IC1 and outputs speed regulation The voltage is supplied to the motor control IC2, and the fan voltage is output to the driver IC3.

[0038] The fan drive circuit is as Figure 5 As shown, the terminals 1-4 of CN8 correspond to the fan voltage VDC, fan speed signal...

Embodiment 2

[0041] like Image 6As shown, a gas water heater fan control system includes: a gas water heater main controller 5, and a fan 6 connected to the gas water heater main controller 5, and a main control IC1 is provided on the gas water heater main controller 5 It is characterized in that a fan electric control board is also integrated on the main controller 5 of the gas water heater, and the fan electric control board includes: a motor control IC2 and a drive IC3, and the motor control IC2 communicates with the main control IC1 , and drive the fan 6 through the drive IC 3 , a rotor position detection device 7 is provided on the fan 6 , and the rotor position detection device 7 is connected with the motor control IC 2 to provide a closed-loop control signal.

[0042] Preferably, the motor control IC2 is connected to the main control IC1 through a serial port to realize rotational speed feedback. The fan 6 is a DC fan. The rotor position detection device 7 is a Hall sensor.

[0...

Embodiment 3

[0047] A gas water heater is a strong extraction type gas water heater or a strong drum type gas water heater; it is characterized in that the gas water heater has the fan control system described in the second embodiment.

[0048] The gas water heater provided in this embodiment has all the technical effects of the second embodiment, and details are not repeated here.

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PUM

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Abstract

The invention discloses a master controller of a gas water heater. The master controller is characterized by comprising a master control IC and a fan electric control panel integrated together. The fan electric control panel comprises a motor control IC and a driving IC. The motor control IC is used for receiving a fan rotating speed signal and communicating to the master control IC through a serial port, and the driving IC receives a control signal output by the motor control IC for driving the fan to work. As the fan electric control panel is integrated to the master controller of the gas water heater, the area of the electric control panel of the fan can be reduced greatly, so that a miniaturized design of a direct current fan is facilitated. During use, the master controller of the water heater is electrically connected to the direct current fan only through six wires. The master controller is simple in connecting structure and convenient to use. In addition, damage of high temperature to an electron component is avoided, and the reliability of the fan is improved effectively and the service life of the fan is prolonged effectively. The invention also provides a fan control system and the gas water heater.

Description

technical field [0001] The invention relates to the technical field of gas water heaters, in particular to a gas water heater main controller, a fan control system and a gas water heater. Background technique [0002] At present, gas water heaters have been widely used in ordinary households, and gas water heaters that meet national standards are equipped with a fan. In the past two years, DC fans have been widely used in gas water heaters with high cost performance. [0003] In the prior art, such as figure 1 As shown in the figure, the DC fans applied to the gas water heater are all electrically connected to the main control board of the gas water heater through wires. Among them, VDC is the driving voltage of the fan, which is generally a constant value of DC12-36V; GND is the ground, and the potential is zero; VSP It is the speed regulating voltage of the DC fan, generally 0~5V; FG is the feedback signal of the fan speed, generally a square wave signal. [0004] combi...

Claims

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Application Information

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IPC IPC(8): F24H9/20
CPCF24H9/2035
Inventor 艾穗江刘兵阳悠悠
Owner GUANGDONG MACRO GAS APPLIANCE
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