KR100234054B1 - A controlling method for a fan of a heater - Google Patents

Abstract

The present invention is to place a temperature sensor for detecting the warm air in the chamber on the flow path of the warm air in the chamber to primarily detect the overheating of the heater to prevent fire, and also to control the blowing fan in accordance with the temperature of the hot air selectively during combustion The present invention relates to a blower fan control apparatus and a control method of a heater to prevent noise caused by on / off control of a blower fan, and to prevent degradation of product performance and lifespan due to frequent repetition of combustion operation.

Conventional heaters have a problem that the blower fan motor frequently generates a strong noise due to driving / stopping, and when the blower fan motor is turned off and then on again, the heater has to be re-ignited and burned so that the warm air is late due to a long time. .

In order to solve this problem, the present invention includes a temperature sensing means installed at a predetermined position between the combustion chamber and the heat exchanger to sense a warm air temperature in the chamber; Control means for selectively generating a blowing fan driving control signal corresponding to the warm air temperature value obtained by the temperature sensing means, and controlling the overall function of the system; It is composed of a blowing fan motor that is selectively driven in accordance with the blowing fan drive control signal output from the control means to control the air volume.

Description

A controlling method for a fan of a heater}

The present invention relates to an apparatus for controlling a blower fan of a heater and a control method thereof, and in particular, by placing a temperature sensor for detecting a warm air in a chamber on a flow path of a warm air in a chamber to prevent overheating of the heater to prevent fire, In addition, by selectively controlling the blower fan according to the temperature of the warm air to prevent noise caused by the on / off control of the blower fan during combustion, and to prevent degradation of the product performance and shortened life due to the small repetition of the combustion operation. A blower fan control method for a heater.

Conventional heaters, as shown in Figure 1, is located between the combustion chamber 1 and the heat exchanger (2) Thermostat (3) for detecting the temperature rise in the chamber (8), and the thermostat ( The controller 4 for comparing the temperature value sensed in 3) with a preset temperature value for combustion control and controlling combustion according to the comparison result, and also controlling the overall function of the system, and outputting from the controller 4. A burner fan motor 5 which is driven according to the control signal to which the air flows into the burner 6 and a control signal which is ignited according to the control signal output from the control unit 4 and output from the burner fan motor 5. It is composed of a blowing fan motor (7) which is driven in accordance with the flow of cold air into the combustion chamber (2).

In the figure, reference numeral 9 denotes a temperature sensor for measuring indoor temperature.

The operation of the conventional heater configured as described above will be described with reference to FIGS. 1 and 2 as follows.

First, the thermostat 3 is placed between the combustion chamber 2 and the heat exchanger 1 in the chamber 8 so that when the inside of the chamber 8 is overheated and reaches a specific temperature (eg, 90 ° C.), the control unit is primarily controlled. (4) detects this to generate a control signal to the burner fan motor 5 and the burner 6 to stop the combustion to cool the product.

On the other hand, when such control fails, if the secondary temperature reaches a specific temperature (eg, 139 ° C), a temperature fuse (not shown) provided in the heater is short-circuited to cut off the external supply power and stop the combustion. It is equipped with a double stabilizer to protect the.

However, by using the thermostat 1 for the detection of such primary overheating, the temperature in the chamber 8 cannot be sensed, and the temperature characteristic in the chamber 8 according to the operation of the blowing fan of FIG. As shown in the figure, the on / off (for example, ON at 75 ° C (ON) / OFF at 90 ° C), so the blower fan motor 7 is driven / stopped during the on / off intermittent noise is Is strongly generated.

In addition, since the combustion is stopped at the time of off, when on again, the combustion is performed by ignition again.

However, such a conventional heater has a problem in that noise is strongly generated by the blower fan motor being frequently driven / stopped, and when the blower fan motor is turned on again after turning off the blower fan, combustion must be performed by re-ignition so that the warm air is delayed due to a long time. There was this.

In addition, the thermostat is sensitive to the position, when the location is not appropriate, there is a problem in reducing the product life due to frequent on / off.

Therefore, in the present invention, by placing a temperature sensor for detecting the warm air in the chamber on the flow path of the warm air in the chamber to primarily detect overheating of the heater to prevent fire, and also by selectively controlling the blowing fan according to the temperature of the hot air to burn The purpose of the present invention is to provide a control method of a blower fan of a heater that prevents noise caused by on / off control of a blower fan and prevents degradation of product performance and lifespan due to frequent repetition of combustion operation. .

Technical means of the present invention for achieving this object is provided at a predetermined position between the combustion chamber and the heat exchanger and the temperature sensing means for sensing the warm air temperature in the chamber; Control means for selectively generating a blowing fan driving control signal corresponding to the warm air temperature value obtained by the temperature sensing means, and controlling the overall function of the system; It is made of a blowing fan motor that is selectively driven in accordance with the blowing fan drive control signal output from the control means to control the air volume.

In addition, the control method of the present invention for achieving this object comprises a first step of sensing the warm air temperature in the chamber; A second step of comparing the warm air temperature value in the first step with a preset temperature value (95 ° C.) to stop combustion; A third step of stopping combustion and determining whether to re-burn if it is determined that the comparison in the second step is equal to or greater than the predetermined temperature value (95 ° C.); A fourth step of comparing the warm air temperature value in the first step with a preset primary specific temperature value (90 ° C.) for selectively controlling the blowing fan; A fifth step of driving the blower fan at a low speed when it is determined that the comparison result is smaller than the predetermined first specific temperature value (90 ° C.); The blower fan is driven at a high speed when the comparison result of the fourth step is greater than the predetermined first specific temperature value (90 ° C.) and less than the predetermined temperature value (95 ° C.) to stop the combustion. With six steps; If it is determined that the blowing fan in the sixth step is smaller than the predetermined second specific temperature value (80 ° C.) to selectively control the blowing fan when driving at a high speed, the blowing fan is driven at a medium speed. A seventh step of driving the blowing fan at a high speed when it is determined that the temperature is greater than the set second specific temperature value (80 ° C.); If the temperature value detected when the blowing fan in the seventh step is driven at medium speed is smaller than the predetermined third specific temperature value (75 ° C.) to selectively control the blowing fan, the blowing fan is driven at a low speed. If the temperature is greater than the preset third specific temperature value (75 ℃) and less than the preset first specific temperature (90 ℃), the blower fan is operated at medium speed, and it is larger than the preset first specific temperature (90 ℃). An eighth step of controlling the blowing fan at a high speed when the temperature is smaller than a preset temperature (95 ° C.); In the eighth step, during the selective control of the blower fan, a ninth step of terminating combustion occurs.

1 is a schematic configuration diagram of a conventional heater.

2 is a temperature characteristic diagram in a chamber according to an operation of a blowing fan applied to FIG. 1.

3 is a schematic configuration diagram of a blower fan control device for a heater according to the present invention;

Figure 4 is a temperature characteristic diagram in the chamber according to the operation of the blowing fan according to the present invention.

5 is an operation flowchart for explaining a blowing fan control method of the heater according to the present invention.

* Explanation of symbols for the main parts of the drawings

101: chamber 102: combustion chamber

103: heat exchanger 104: temperature detection unit

105: control unit 106: blowing fan motor

107: butter pan motor 108: burner

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic configuration diagram of a blower fan control apparatus for a heater according to the present invention, FIG. 4 is a temperature characteristic diagram of a chamber according to the blower fan operation according to the present invention, and FIG. 5 is a blower fan control for a heater according to the present invention. The operation flow chart for explaining the method, which is installed at a predetermined position between the combustion chamber 102 and the heat exchanger 103, the temperature sensing unit 104 for sensing the warm air temperature in the chamber 101, and the temperature sensing unit The control unit 105 for selectively generating a blowing fan driving control signal according to the warm air temperature value obtained at 104, and controlling the overall function of the system, and the blowing fan selectively output from the control unit 105. Blower fan motor 106 that is selectively driven according to the drive control signal to control the air flow rate, and burner fan that is driven in accordance with the control signal output from the controller 105 to introduce air into the burner 108 And a burner 108 whose ignition is controlled by the air flowing from the burner fan motor 107 and ignited according to the control signal output from the control unit 105 and the control unit 105. The blower fan motor 106 is driven in accordance with a control signal to introduce cold air into the combustion chamber 102.

Referring to Figures 3 to 5 attached to the operation and effect of the present invention configured as described above are as follows.

First, in the heater chamber 101, the conventional primary overheat detection thermostat is removed between the combustion chamber 102 and the heat exchanger 103, and a temperature sensing unit 104 is installed to prevent the primary overheating and the inside of the chamber. To detect the warm air temperature.

On the other hand, unlike the prior art blower fan 106 is composed of a multi-step (e.g., three stages) with a different air volume so as not to turn off completely during combustion, the hot air temperature in the chamber 101 is a specific temperature range (for example, At 80 ° C. to 90 ° C.).

That is, in the initial stage of combustion, the blower fan is driven at a low speed in order to quickly form warm air.

At this time, the temperature detector 104 detects the warm air temperature in the chamber 101 and inputs it to the controller 105.

Then, the controller 105 controls the blower fan motor 106 by selectively generating a blower fan driving control signal according to the warm air temperature value input from the temperature sensor 104.

Accordingly, the blower fan motor 106 controls the blower fan according to the blower fan drive control signal selectively output from the controller 105 to adjust the warm air temperature in the chamber 101.

That is, the control unit 105 is the blower fan motor 106 when the warm air temperature value input from the temperature sensing unit 104 reaches a predetermined first specific temperature value (90 ℃) to selectively control the blowing fan Drive a high speed to lower the warm air temperature in the chamber 101, and when the warm air temperature in the chamber 101 falls again to reach a predetermined second specific temperature value (80 ° C.), the blower fan motor 106 is opened. It operates at a medium speed to maintain the warm air temperature in the chamber 101. (This is the time it takes for the product to adapt slowly to the temperature due to the characteristic that the temperature change of the whole product is hard to change rapidly.)

On the other hand, by driving the blower fan motor 106 at a low speed again, the temperature of the warm air is raised and discharged into the room.

Accordingly, the consumer is controlled in a specific temperature range so that the user can hardly detect a change in temperature (the consumer feels the ambient temperature through convection indoors without directly supplying warm air to the human body), and the blower fan motor 106 Since it is not off, the consumer can minimize the noise generated by driving / stopping the blower fan motor 106.

In addition, the blowing fan control method of the heater for carrying out the present invention performs a first step of detecting the warm air temperature in the chamber. Subsequently, a second step of comparing the warm air temperature value in the first step with a preset temperature value (95 ° C.) in order to stop combustion is performed, and as a result of the comparison in the second step, the preset temperature value 95 If it is determined to be greater than or equal to (° C.), combustion is stopped and a third step of determining whether to reburn is performed. Subsequently, a fourth step of comparing the warm air temperature value in the first step with a preset first specific temperature value (90 ° C.) for selectively controlling the blower fan is performed, and the comparison result in the fourth step is described above. When it is determined that the temperature is smaller than the preset first specific temperature value (90 ° C.), a fifth step of driving the blower fan at a low speed is performed. On the other hand, when the comparison result of the fourth step is larger than the predetermined first specific temperature value (90 ℃) and less than the predetermined temperature value (95 ℃) to stop the combustion, the blower fan is driven at a high speed And if it is determined that the blowing fan in the sixth step is smaller than a predetermined second specific temperature value (80 ° C.) to selectively control the blowing fan when driving at a high speed, the blowing fan is changed to medium speed. In contrast, if it is determined that the temperature is greater than the preset second specific temperature value (80 ° C.), a seventh step of driving the blower fan at high speed is performed. Subsequently, when the temperature value detected when the blower fan is driven at medium speed is smaller than the predetermined third specific temperature value (75 ° C.) for selectively controlling the blower fan, the blower fan is driven at a low speed. When the temperature is greater than the predetermined third specific temperature value (75 ° C.) and less than the predetermined first specific temperature (90 ° C.), the blower fan is operated at a medium speed, and the temperature is greater than the predetermined first specific temperature (90 ° C.). When the temperature is larger than the preset temperature (95 ° C.), the eighth step of controlling the blower fan at a high speed is performed, and the combustion is terminated when the combustion end time is reached while selectively controlling the blower fan in the eighth step. Perform step 9.

As described above, the present invention controls the hot air temperature in the chamber in a specific temperature range (80 ° C. to 90 ° C.) rather than a specific temperature (75 ° C. and 90 ° C.), thereby changing the control according to the measurement temperature (conventionally: on / off The present invention has the effect of reducing the combustion is less than the conventional one because the steel, medium, low) is less, and the number of times of re-burning after off is much smaller than the conventional one to shorten the time to re-form the warm air It can be effective.

In addition, as the combustion continues, driving of the burner fan motor, the burner, and the blower fan, which are related devices, does not cause an interruption, thereby preventing degradation of product performance and shortening of water.

Claims (1)

Sensing a warm air temperature in the chamber; A second step of comparing the warm air temperature value in the first step with a preset temperature value (95 ° C.) to stop combustion; A third step of stopping combustion and determining whether to re-burn if it is determined that the comparison in the second step is equal to or greater than the predetermined temperature value (95 ° C.); A fourth step of comparing the warm air temperature value in the first step with a predetermined first specific temperature value (90 ° C.) for selectively controlling the blowing fan; A fifth step of driving the blower fan at a low speed when it is determined that the comparison result is smaller than the predetermined first specific temperature value (90 ° C.); The blower fan is driven at a high speed when the comparison result of the fourth step is greater than the predetermined first specific temperature value (90 ° C.) and less than the predetermined temperature value (95 ° C.) to stop the combustion. With six steps; If it is determined that the blowing fan in the sixth step is smaller than the predetermined second specific temperature value (80 ° C.) to selectively control the blowing fan when driving at a high speed, the blowing fan is driven at a medium speed. A seventh step of driving the blowing fan at a high speed when it is determined that the temperature is greater than the set second specific temperature value (80 ° C.); If the temperature value detected when the blowing fan in the seventh step is driven at medium speed is smaller than the predetermined third specific temperature value (75 ° C.) to selectively control the blowing fan, the blowing fan is driven at a low speed. If the temperature is greater than the preset third specific temperature value (75 ° C) and less than the preset first specific temperature (90 ° C), the blower fan is operated at medium speed, and is larger than the preset first specific temperature (90 ° C). An eighth step of controlling the blowing fan at a high speed when the temperature is smaller than a preset temperature (95 ° C.); And a ninth step of terminating combustion when the combustion end time is reached while selectively controlling the blower fan in the eighth step.

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