JPH062853A - Warm air heater - Google Patents

Abstract

PURPOSE:To reduce the noise level and perform heating at an optimum temperature during sleeping mode operation by providing a heater unit and a radiant heater unit to perform heating operation. CONSTITUTION:When sleeping mode operation is set by an operation mode switch, and the detected ambient temperature of an ambient temperature sensor 14 is a specified temperature or lower, a heater unit 4 and a fan motor 2 are brought in operation by a warn air device (microcomputer) 10 and warm air is output. When the ambient temperature reaches a specified temperature due to the warm air output, the heater unit 4 and fan motor 2 is stopped and a radiant heater unit 5 is put in operation by the warm-keeping device (microcomputer) 10 to perform radiant heating. As a result, the noise level is kept low and silent heating operation is carried out at an optimum temperature corresponding to the ambient temperatures during sleeping mode operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air blower provided with a heater unit and a radiant heater unit for heating operation.

[0002]

2. Description of the Related Art A warm air blower is provided with a heater unit, a fan motor, and the like, and in the heating operation, the heater unit is energized and the fan motor is controlled in operation. As a result, the air heated by the heater unit is output as warm air. In this case, in the heating operation, the deviation between the ambient temperature and the target temperature is obtained, and the energization control to the heater unit is performed so that the deviation becomes zero. Further, the rotation speed of the fan motor is variable, and for example, the hot air output is switched to three stages of "strong", "medium" and "weak".

By the way, such a hot air blower is provided with a heating operation mode applied at bedtime, that is, a so-called "sleep operation" function. For this good night driving, (a)
It is judged whether a certain time has passed in the heating operation state, and if the certain time has passed, the heating operation is stopped, (b) the heating operation is started after a certain time has passed, (c) (a) and (b) In the heating operation state, the heating operation is stopped when a certain time has elapsed, and the heating operation is started when the certain time has elapsed.

[0004]

However, in the nighttime operation, the heater unit is energized and the fan motor is operated for a certain period of time, and the energization of the heater unit is controlled according to the ambient temperature. Absent. For this reason, the heating at bedtime may not reach the optimum temperature and may be uncomfortable. Therefore, it is an object of the present invention to provide a warm air blower that is quiet and quiet even during a good night operation, and that can be heated to an optimum temperature according to the ambient temperature.

[0005]

According to the present invention, a heater unit, a radiant heater unit, a fan motor, an ambient temperature sensor, an operation mode switch, and an ambient temperature sensor which is operated by the operation of the operation mode switch are detected. If the ambient temperature is equal to or lower than a predetermined temperature, a warm air unit that operates the heater unit and the fan motor to output warm air,
When the ambient temperature reaches a predetermined temperature by the warm air output by the warm air means, the heater unit and the fan motor are stopped, and the radiant heater unit is operated to perform radiant heating. It is a warm air blower trying to achieve.

[0006]

By providing such means, when the sleep mode operation is performed from the operation mode switch, if the ambient temperature detected by the ambient temperature sensor is below a predetermined temperature, the heater unit and the fan motor are heated by the warm air means. Is operated and hot air is output. When the ambient temperature reaches a predetermined temperature by this warm air output, the heat retaining means stops the operations of the heater unit and the fan motor, and operates the radiant heater unit to perform radiant heating. This keeps the ambient temperature approximately constant.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a warm air blower. A blower fan motor 2 is provided inside the warm air blower main body 1, and a fan 3 is attached to a rotation shaft of the blower fan motor 2. Blower fan motor 2 at the bottom of the warm air blower body 1
A heater unit 4 is provided in the ventilation passage. The heater unit 4 has, for example, a PTC heater, and the PTC heater has a characteristic that the amount of heat generated changes according to the strength of the wind. A radiant heater unit 5 is provided on the front surface of the warm air blower body 1.
The radiant heater unit 5 is formed by incorporating a radiant heater into a ceramic heater.

Further, as shown in FIG. 2, the electric circuit is provided with a microcomputer 10, and various switches 11, relays 12, 1 are provided in the microcomputer 10.
3, ambient temperature sensor 14 and fan motor drive circuit 15
Are connected. Of these, various switches 11 include an operation mode switch for selecting a normal heating operation mode, a good night operation mode, etc., a hot air heating or radiant heating selection switch, and a hot air output of “strong” “medium” “weak”. There are a hot air output switch, a temperature adjustment switch, etc.

The heater unit 4 is connected to the relay circuit 12 of the relay circuits 12 and 13,
A radiant heater unit 5 is connected to this, and by energizing these relay circuits 12 and 13, the heater unit 4 and the radiant heater unit 5 are energized. Further, the blower fan motor 2 is connected to the fan motor drive circuit 15.

The microcomputer 10 of the heater unit 4 or the radiant heater unit 5 makes the deviation between the temperature set by the temperature adjustment switch of the various switches 11 and the temperature detected by the ambient temperature sensor 14 zero. A function to control the energization of either or both of them,

When the sleep operation mode is set according to the program of the sleep operation flow chart shown in FIG. 3, and the ambient temperature detected by the ambient temperature sensor 14 is below a predetermined temperature, the heater unit 4 and the blower fan motor 2 are operated. First warm air function,

When the ambient temperature reaches a predetermined temperature due to this warm air output, the radiant heating function of stopping the operation of the heater unit 4 and the blower fan motor 2 by the heat retaining means and operating the radiant heater unit 5, It has a second warm air function for later operating the heater unit 4 and the blower fan motor 2 again. Next, the operation of the apparatus configured as described above will be described with reference to the good night operation flow chart shown in FIG.

The microcomputer 10 executes step #
In 1, it is determined whether the operation mode switch of the various switches 11 is set to the good night operation, and if it is set to the good night operation, the process proceeds to step # 2 and the temperature signal from the ambient temperature sensor 14 is fetched to determine the ambient temperature. Detect.

Next, in step # 3, the microcomputer 10 sets "strong", "medium" and "weak" of the warm air output from the warm air output switches of the various switches 11, and sets the target temperature from the temperature adjusting switch.

Next, the microcomputer 10 compares the ambient temperature with the target temperature in step # 4, and if the ambient temperature does not reach the target temperature, the microcomputer 10 proceeds to step # 5 to energize the relay circuit 12 to heat the heater. The unit 4 is energized, and at the same time, a drive control signal is sent to the fan motor drive circuit 15 to drive the blower fan motor 2. As a result, the air heated by the heater unit 4 is output as warm air.

The microcomputer 10 again returns to step # 4 to compare the ambient temperature with the target temperature. If the ambient temperature has not reached the target temperature, the microcomputer 10 proceeds to step # 5 to output warm air as above. When the ambient temperature reaches the target temperature, the process proceeds to step # 6, the energization of the relay circuit 12 is released, the heater unit 4 is de-energized, and the blower fan motor 2 is stopped.

Next, the microcomputer 10 determines whether or not a preset fixed time has elapsed since the hot air output was stopped in step # 7. If this time has not elapsed, the ambient temperature is determined in step # 8. It is determined whether the temperature is higher than a predetermined temperature.

If the result of this determination is that the ambient temperature is below the predetermined temperature, the microcomputer 10 proceeds to step # 9.
Then, the relay circuit 13 is energized to energize the radiant heater unit 5. As a result, the radiant heater unit 5 generates heat, and the ambient air is kept warm by the radiant heating.

The microcomputer 10 again returns to step # 7 to determine whether a certain time has elapsed. If this time has not elapsed, the microcomputer 10 again determines in step # 8 whether the ambient temperature has reached the predetermined temperature or higher. When the ambient temperature reaches or exceeds the predetermined temperature, the microcomputer 10
Moves to step # 10 to release the bias to the relay circuit 13 and stop the heat generation of the radiant heater unit 5.

Then, after a lapse of a certain time, the microcomputer 10 causes the steps # 7 to # 11.
Then, the relay circuit 12 is energized to energize the heater unit 4, and at the same time, a drive control signal is sent to the fan motor drive circuit 15 to drive the blower fan motor 2. As a result, the air heated by the heater unit 4 is output as warm air. In this case, the blower fan motor 2 outputs the warm air at a low speed, that is, at the warm air output “medium” and “weak”.

When the heating operation in the sleep operation is performed, the ambient temperature first rises by the warm air output using the heater unit 4 to reach the target temperature, as shown in FIG.
Next, the ambient temperature is maintained by the radiant heating of the radiant heater unit 5. After that, the ambient temperature rises again due to the warm air output using the heater unit 4.

As described above, in the above embodiment, when the sleep mode is set by the operation mode switch, the ambient temperature is compared with the target temperature, and if the ambient temperature is lower than the target temperature, the heater unit 4 and the blower are blown. The fan motor 2 is operated to output warm air, and when the ambient temperature reaches the target temperature by this warm air output, the operation of the heater unit 4 and the blower fan motor 2 is stopped and the radiant heater unit 5 is operated to radiate. Heating is performed, and after this radiant heating, the heater unit 4 and the blower fan motor 2 are operated to output warm air, so it is possible to heat to an optimum temperature according to the ambient temperature even during a good night operation, and to sleep. Sometimes the room temperature can be kept almost constant, and the comfortable room temperature can be maintained. Further, since the radiant heater unit 5 is used in this sleep mode, quiet heating operation can be performed without generating noise. Further, in the warm air output after the radiant heating by the radiant heater unit 5, since the blower fan motor 2 is operated at a low speed, the warm air can be quietly output.

The present invention is not limited to the above-described embodiment, and may be modified within the scope of the invention.
For example, the good night driving may be performed in combination with the timer driving. Also, the warm air output performed after the radiant heating by the radiant heater unit 5 may be eliminated.
The radiant heater unit 5 is not limited to the one in which the radiant heater is incorporated in the ceramic heater, and it may be formed of another one. Further, the conditions for starting the good night driving may be any conditions, and it is not only applied to the good night driving.

[0025]

As described above in detail, according to the present invention, it is possible to provide a warm air blower which produces little noise even during a good night operation and can be heated to an optimum temperature according to the ambient temperature.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a warm air fan according to the present invention.

FIG. 2 is a configuration diagram of an electric circuit of the hot air blower.

FIG. 3 is a flow chart of a good night operation in the hot air blower.

FIG. 4 is a diagram showing a change in ambient temperature during a sleep operation using the same hot air blower.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body of air blower, 2 ... Blower fan motor, 3 ... Fan, 4 ... Heater unit, 5 ... Radiation heater unit, 10 ... Microcomputer, 11 ... Various switches, 12, 13 ... Relay circuit, 14 ... Ambient temperature sensor, 15 ... Fan motor drive circuit.

Claims (1)

[Claims] 1. A heater unit, a radiant heater unit, a fan motor, an ambient temperature sensor, an operation mode switch, and an ambient temperature detected by the ambient temperature sensor in response to an operation of the operation mode switch is a predetermined temperature. If the following is true, the heater unit and the fan motor are operated to output warm air, and when the ambient temperature reaches a predetermined temperature by the warm air output by the warm air means, the heater unit and the A warm air blower comprising: a heat retention unit that stops the operation of a fan motor and operates the radiant heater unit to perform radiant heating.