TWI382143B - The control method of heating radiator for bathroom - Google Patents

Description

Control method for heating ventilating fan for bathroom

The invention relates to a ventilation fan, in particular to a control method of a heating ventilating fan for a bathroom.

As shown in Fig. 1, a heating ventilating fan 1 for a bathroom is known. This type of ventilating fan is installed in the bathroom, connected to the outside through a connecting pipe, and then the air of the bathroom is replaced, and the ventilating fan is warmed by the heater.

An opening is provided on the lower surface of the frame 10 which is not formed in a box shape, and the opening portion under the frame is provided with a mask 20 having an air outlet 21 and an air inlet 22, and the frame is provided with three main portions, respectively, which are provided with a ventilation blower 31. The first portion 30 is provided with a second portion 40 of the loop blower 41 and a third portion 50 provided with a heater 51.

The ventilation blower 31 of the first portion 30 communicates with the outside through the opening 11 of the frame 10 and the duct, and is sucked by the ventilation blower 31 from the air inlet 22 of the mask 20 and then blown to the outside.

The loop blower 41 of the second portion 40 communicates with the third portion 50 to which the heater 51 is mounted, and the loop blower 41 draws air from the suction port 22 of the mask 20 and then blows it toward the third portion 50, and the third portion 50 passes through the opening and The air outlet 21 of the mask 20 is in communication, and the air is heated and then blown out from the air outlet 21.

Such existing bathroom heating ventilators are usually installed in cold places, but when turned on, the above-mentioned heating ventilating fan will instantaneously operate at a high speed, and the wind speed is fast, and the heater is still not fully heated at this time, so , The cold wind that blows out will blow directly to people, making people feel cold and uncomfortable.

Therefore, a ventilation fan that blows out a warm wind has become a hope.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method of controlling a heating ventilating fan for a bathroom, which enables a warm ventilating fan to be blown out of the bathroom.

A secondary object of the present invention is to provide a method of controlling a heating ventilating fan for a bathroom, which can improve the safety of a heating ventilating fan for a bathroom.

In order to achieve the above object, the present invention provides a control method for a heating ventilating fan for a bathroom, characterized in that a switching signal and a temperature signal are used as an input unit, a microprocessor is used as a control unit, and a motor and a heater are used as output units, and are passed through a microprocessor. The fan of the ventilating fan operates at a speed lower than the normal air volume when the temperature of the heater is lower than the set starting temperature t1 for a certain period of time. That is, the present invention has a microprocessor-controlled hot start function that enables the system to operate at a low speed before the heater is sufficiently heated, such as before 20 degrees Celsius, until it is sufficiently heated to 20 degrees Celsius. Operates at normal speed to ensure user comfort when using this product.

The method for controlling a heating ventilating fan for a bathroom, wherein before the microprocessor sends a stop signal to the motor, an opening signal is sent to the motor controller through the microprocessor, and the motor is controlled to be turned on and then stopped. In this way, the fan can be turned on first, such as running at high speed for 2 seconds, and then stopping for 10 seconds, so that the user can be prevented from using the product and mistakenly believe that the fan is damaged and does not work.

The method for controlling a heating ventilating fan for a bathroom, wherein when the microprocessor controls the motor to operate at a low air volume, the temperature of the heater is monitored instantaneously by a temperature sensor, and when the detected temperature is higher than the set starting temperature At t1, the microprocessor sends a signal that can be run to the motor controller to control the motor to run at a normal wind speed. In this way, the temperature sensor controls the fan to operate at a high speed when detecting that the temperature of the heater is higher than the starting temperature, such as 20 degrees Celsius, thereby preventing the heater temperature from continuing to rise rapidly and ensuring normal use of the product.

The control method of the heating ventilating fan for the bathroom, wherein when the heater temperature is greater than the starting temperature t1, when the fan returns to the normal air volume operation, the microprocessor still detects the temperature during the set detection time T1, when detecting When the heater temperature is lower than the set holding temperature t2, the processor sends a signal to the motor controller to control the motor to operate again at a low air volume speed. In this way, within the detection time, such as within 30 seconds, if it is detected that the heater temperature drops to the holding temperature, such as below 15 degrees Celsius, the fan can be controlled to run at a low speed again, and the heater is quickly warmed up to avoid the user feeling Cold wind discomfort.

The control method of the heating ventilating fan for a bathroom, wherein when the set detection time T1 is ended, regardless of the heater temperature detected by the microprocessor through the temperature sensor, a signal is sent to the motor controller to control the motor to Normal air volume operation. In this way, within the detection time, such as within 30 seconds, after the hot start is run, regardless of how the detected temperature changes, a signal is sent to control the fan to operate at a normal air volume to avoid thermal energy loss caused by temperature deviation.

The control method of the heating ventilating fan for a bathroom, wherein when the microprocessor detects that the switch and the temperature signal meet the set condition, when the fan enters the low air volume speed operation, a pulse signal can be sent to the LED controller to control the LED light to start. Blinks until it is turned off when the warm start function is stopped. In this way, the user can see an LED flashing at a frequency of 0.5 seconds/off 0.5 seconds, which is useful for understanding the state in which the system is running.

The method for controlling a heating ventilating fan for a bathroom, wherein during normal airflow operation, if the microprocessor detects that the temperature is higher than the set protection temperature t3 by the temperature sensor, a signal is sent to the heater controller to start timing. During this time, no matter how the temperature changes, the heater will be forcibly turned off. After the timing is over, the processor will send out the corresponding control signal according to the detection result, and then end the judgment of jumping out and waiting for the next loop. Thus, when the temperature sensor can detect that the heater temperature is higher than the protection temperature, such as 40 degrees Celsius, the heater is forcibly turned off for 2 minutes, and then the temperature is detected. If the temperature is greater than or equal to 40 degrees Celsius, the heater is continuously turned off. If the temperature is below 40 degrees Celsius, turn the heater back on to ensure proper use of the product.

In summary, the present invention has the advantage that when the heater temperature is too low, the air is not blown temporarily to ensure that the blown wind is always hot air.

As shown in Fig. 2, it is a structural frame diagram of the present invention. The switch signal 101, the temperature signal 102 as the input unit 100, the microprocessor 201 as the control unit 200, the motor controller 301 controls the motor 302, the heater controller 303 controls the heater 304, the LED driver 305 controls the LED 306, the motor controller 301, The motor 302, the heater controller 303, the heater 304, the LED driver 305, and the LED 306 are used as the output unit 300.

FIG. 3 is a schematic flowchart of an embodiment of the present invention. At the beginning of the system (step 1000), a determination is made first on the switch signal (step 1001), and if not, it jumps directly (step 1100) to enter other functions. If there is, the timing T1 is restarted, in this embodiment, 30 seconds (step 1002), and the heater temperature is further judged (step 1003). When the detected temperature is greater than the starting temperature, in this embodiment, At 20 degrees Celsius, the hot start function is not required, and the operation is directly performed in a normal state (step 1004), and the temperature is still detected before the end of T1 (step 1005). At this time, the detected temperature point is the holding temperature, in this embodiment. At 15 degrees Celsius, if it is found to be less than 15 degrees Celsius, it returns to the low air volume operation state (step 1101).

When the detected heater temperature is less than 20 degrees Celsius, the control LED flashes (step 1006), the fan operates at a low air volume (step 1007), and the temperature is also monitored (step 1008), and the temperature is greater than 20 degrees Celsius during time T1. The degree is operated at a normal air volume (step 1009), and if it is less than, it is still operated at a low air volume until time T1 is reached (step 1010).

The above process can also be seen that as long as T1 is reached, regardless of the heater temperature, it will jump to normal airflow.

At this time, the high temperature protection temperature of the heater, in this embodiment, is 40 degrees Celsius, and is monitored (step 1011). If it is greater than 40 degrees Celsius, the heater is forcibly turned off for 2 minutes (step 1012) and then according to The temperature (step 1013) determines to open (step 1014) or continue to turn off the heater (step Step 1015), and then end the judgment of jumping out and waiting for the next loop.

1‧‧‧Bathroom heating and ventilation fans

10‧‧‧Frame

11‧‧‧ openings

20‧‧‧ mask

21‧‧‧air outlet

22‧‧‧ suction port

30‧‧‧Part 1

31‧‧‧Ventilator blower

40‧‧‧Part II

41‧‧‧Circle blower

50‧‧‧Part III

51‧‧‧heater

100‧‧‧ input unit

101‧‧‧Switch signal

102‧‧‧temperature signal

200‧‧‧Control unit

201‧‧‧Microprocessor

300‧‧‧Output unit

301‧‧‧Motor controller

302‧‧‧Motor

303‧‧‧heater controller

304‧‧‧heater

305‧‧‧LED driver

306‧‧‧LED

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a prior art technique of the present invention.

Figure 2 is a structural block diagram of an embodiment of the present invention.

Figure 3 is a schematic flow diagram of an embodiment of the present invention.

100‧‧‧ input unit

101‧‧‧Switch signal

102‧‧‧temperature signal

200‧‧‧Control unit

201‧‧‧Microprocessor

300‧‧‧Output unit

301‧‧‧Motor controller

302‧‧‧Motor

303‧‧‧heater controller

304‧‧‧heater

305‧‧‧LED driver

306‧‧‧LED

Claims (6)

A control method for a heating ventilating fan for a bathroom, wherein: a switching signal and a temperature signal are used as an input unit, a microprocessor is used as a control unit, a motor and a heater are used as an output unit, and are controlled by a microprocessor for a certain period of time, when the heater is When the temperature is lower than the set starting temperature, the fan of the ventilating fan runs at a speed lower than the normal air volume. The method for controlling a heating ventilating fan for a bathroom according to claim 1, wherein before the microprocessor sends a stop signal to the motor, an opening signal is sent to the motor controller through the microprocessor to control the motor to be turned on. stop. The method for controlling a heating ventilating fan for a bathroom according to the first aspect of the invention, wherein when the microprocessor controls the motor to operate at a low air volume, the temperature sensor is instantly monitored by the temperature sensor when the detected temperature is detected. When the temperature is higher than the set starting temperature, the microprocessor sends a signal that can be normally operated to the motor controller to control the motor to run at a normal air volume. The method for controlling a heating ventilating fan for a bathroom according to claim 3, wherein when the heater temperature is greater than the initial temperature, when the fan returns to the normal air volume operation, the microprocessor still controls the temperature during the set detection time. The detection is performed, and when it is detected that the heater temperature is lower than the set holding temperature, the processor sends a signal to the motor controller to control the motor to operate at a low air volume speed again. The method for controlling a heating ventilating fan for a bathroom according to claim 4, wherein when the set detection time is over, the temperature of the heater detected by the microprocessor through the temperature sensor is generated. A signal is sent to the motor controller to control the motor to operate at a normal air volume. The method for controlling a heating ventilating fan for a bathroom according to claim 1, wherein during the normal air volume operation, if the microprocessor detects that the temperature is higher than the set protection temperature by the temperature sensor, a signal is sent to the heater. The controller starts timing. During this time, regardless of the temperature change, the heater will be forcibly turned off. After the timer expires, the processor will send out the corresponding control signal according to the detection result, and then end the jump and wait for the next loop. Judgment.