JPH11230619A - Hot air heater with air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a dust collecting filter from being deteriorated due to superheat even when a hot water heater is abnormally overheated. SOLUTION: When a cleaning operation switch 24 is turne on (STEP 1), a cleaner controller 20 detects temperature by a thermistor 17 (STEP 2) to detect whether or not the detected temperature reaches 80 deg.C (STEP 3). When the detected temperature of the thermistor is not lower than a prescribed temperature (YES in STEP 3), the operation of a cleaning blower is stopped to inhibit the operation of an air cleaner (STEP 4). Thus, when a gas fan heater is abnormally heated and the detected temperature of the thermistor is not lower than the prescribed temperature, the operation of the air cleaner is inhibited. Therefore, the suction of air heated by the gas fan heater from a cleaning inlet can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater provided with an air purifier.

[0002]

2. Description of the Related Art A hot air heater has a heating source such as a gas burner and a heating blower. The operation of the heating blower heats indoor air sucked through a suction port (heating suction port). Heated by source, outlet (heating outlet)
It blows out as warm air. Further, the air purifier includes a dust collecting filter and a cleaning blower. By operating the cleaning blower, the room air sucked through the suction port (cleaning suction port) passes through the dust collecting filter. It purifies and purifies the purified air into the room from an outlet (cleaning outlet).

[0003] Recently, a combination of an air purifier and a hot air heater has been proposed. For example, in Japanese Patent No. 2637489, an upper case having a built-in cleaning blower and a dust collecting filter, and a lower case having a built-in heating blower and a heating source are vertically connected, and a heating outlet and a cleaning inlet are provided. The components provided on the front surfaces of the lower case and the upper case, respectively, are disclosed. As a result, a part of the warm air blown out from the heating air outlet is sucked in from the cleaning inlet, and this warm air is cleaned and blown out by the dust collecting filter. Can be supplied to

[0004] However, it is generally known that a dust collecting filter provided in an air purifier deteriorates its purifying function due to heat when high-temperature air passes through it. Therefore, no problem occurs if the hot air heater has a relatively small output as in the above-mentioned Patent No. 2637489, but in the case of a high-output hot air heater as used in a normal room,
Since the temperature of the air blown out from the heating outlet becomes high, if a part of the blown-out hot air is sucked from the inlet of the air purifier, the heat of the hot air may deteriorate the dust collecting filter. .

[0005] On the other hand, there is also known a device provided with a dust collection filter at an inlet of a warm air heater. For example, Japanese Patent Laid-Open No. 2-13
Japanese Patent Application Laid-Open No. 0344/1990 and Japanese Patent Application Laid-Open No. 2-166350 disclose a device in which a dust collecting filter is provided in a heating suction port. After being heated by the heating source, it is heated by a heating source and blown out as warm air from a heating outlet. Further, in this warm air heater, an abnormal heating stop means that operates when the combustion blower stops due to, for example, a fan lock or the like is provided.

[0006] In such a hot air heater, the air heated by the heating source does not reach the dust collecting filter since the heating blower is operating during the normal heating operation, but the user needs to operate the heater. When the operation is stopped or when the operation is stopped due to abnormal heating, the air heated by the heating source may flow out of the heating air outlet or the heating air inlet. At this time,
When the air heated by the heating source passes through the dust collection filter, the dust collection filter may be deteriorated by heat.

Therefore, in Japanese Patent Application Laid-Open No. 2-130344,
A passage for discharging hot air to the outside of the main body is provided so that hot air generated from the heating source does not touch the dust collection filter when the heating blower is stopped. Also, Japanese Patent Application Laid-Open No. 2-1
In No. 66350, a shutter for closing the passage is provided, and when the hot air heater is operating, the shutter is closed. When the operation is stopped or abnormally stopped, the shutter is opened to allow hot air from a heating source to exit the main body from the passage. To release it. This prevents hot air from the heating source from passing through the dust collection filter even when the operation is stopped or abnormally stopped.

[0008] However, Japanese Patent Laid-Open Publication No.
No. 4, Japanese Patent Application Laid-Open No. 2-166350, it is necessary to provide a passage for discharging hot air generated from a heating source in the main body and a shutter for shielding this passage during operation. However, there is a disadvantage that the cost increases.

[0009]

SUMMARY OF THE INVENTION The present invention aims to improve a hot air heater with an air purifier, and more particularly, to solve the above-mentioned inconvenience when the hot air heater becomes abnormally overheated. Even in this case, an object of the present invention is to provide a hot air heater with an air purifier that prevents the dust collection filter from being deteriorated due to overheating.

[0010]

In order to achieve the above object, a warm air heater with an air purifier according to the present invention comprises a heating source, a heating blower, a heating inlet, and a heating outlet. Above the hot air heater provided with, a dust collecting filter, a cleaning blower, a cleaning suction port provided separately from the heating suction port, and the heating blowout port are provided separately. An air purifier having a cleaning air outlet, and the warm air heater has a temperature detecting means for detecting a temperature in the warm air heater, and a temperature detected by the temperature detecting means. Abnormal heating stop means for stopping the operation of the heating source when the temperature reaches a first predetermined temperature set so as not to deteriorate the hot air heater by heat, the air purifier comprises Controlling the cleaning blower independently of the operation of the warm air heater Comprising a Kiyoshiki control means, in the cleaning inlet is the heating air outlet and warm-air heating machines with an air purifier that is disposed away, the cleaner control means,
When the temperature detected by the temperature detecting means is equal to or higher than a second predetermined temperature set so as not to deteriorate the dust collecting filter due to heat, an overheat preventing means for prohibiting the operation of the cleaning blower is provided.

According to the warm air heater with an air purifier of the present invention, the cleaning suction port is provided separately from the heating suction port, and the cleaning air outlet is separate from the heating air outlet. It is provided in. Therefore, since the cleaning suction port and the heating suction port are not communicating with each other, the hot air heater is stopped, and even when the air purifier is operated in a state where the temperature inside is high, The air inside the warm air heater is not directly sucked from the cleaning inlet through the heating inlet. Further, the cleaning inlet is provided separately from the heating outlet. The warm air blown out from the heating air outlet through the heating air inlet and the heating air outlet, even when the heating operation by the hot air heater and the cleaning operation by the air purifier are simultaneously performed. Are separated so that they are not sucked directly from the cleaning inlet, the dust collecting filter does not deteriorate due to warm air even during the simultaneous operation.

Further, the warm air heater with an air purifier of the present invention is, for example, due to a fan lock of a heating blower or the like.
An abnormal heating stop means for stopping the operation of the heating source when the temperature detected by the temperature detection means reaches a first predetermined temperature set so as not to deteriorate the hot air heater by heat. The first predetermined temperature is set so that the warm air heater, particularly, electronic devices, resin parts, and the like provided therein are not deteriorated by heat.

By the way, when the operation of the heating source is stopped by the abnormal heating stop means and the heating blower is stopped, the air heated by the residual heat of the heating source fills the inside of the main body, and the heating source is filled. It may flow out of the air outlet or the heating inlet. In addition, even before the operation of the heating source is stopped by the abnormal heating stop unit, the rotation speed of the heating blower is reduced due to a failure, and the air heated by the heating source from the heating suction port is heated. May spill. Here, even when the cleaning inlet is provided apart from the heating outlet, the position of the heating inlet is provided near the lower part of the cleaning inlet. When the cleaning blower operates, there is a possibility that high-temperature air flowing out of the heating suction port may be sucked from the cleaning suction port.

The warm air heater with an air purifier of the present invention includes an overheat preventing means for inhibiting the operation of the cleaning blower when the temperature detected by the temperature detecting means is equal to or higher than the second predetermined temperature. Since the second predetermined temperature is set so as not to deteriorate the dust collecting filter due to heat, even if high-temperature air flows out from the heating suction port, the temperature detected by the temperature detecting means is not higher than the second predetermined temperature. When the temperature is such that the dust collection filter is deteriorated, the operation of the cleaning blower is prohibited, so that high-temperature air is not sucked from the cleaning suction port. For this reason, it is possible to prevent the dust collection filter from being deteriorated by heat. When the temperature detected by the temperature detecting means is lower than the second predetermined temperature,
Even if the air that flows out of the heating suction port is sucked through the cleaning suction port, the dust collection filter does not deteriorate due to heat, so that the cleaning blower can be operated to clean the air in the room.

The overheating preventing means is provided when the operation of the heating source is stopped by the abnormal heating stopping means and when the temperature detected by the temperature detecting means is equal to or higher than the second predetermined temperature. Preferably, the operation of the blower is prohibited. According to this, when the air heated by the residual heat of the heating source fills the main body and has a high possibility of flowing out of the heating air outlet or the heating air inlet, that is, by the abnormal heating stop means. Since the operation of the cleaning blower is prohibited when the operation of the heating source is stopped, it is possible to prevent the heated air from being sucked from the cleaning suction port.

Further, in the warm air heater with an air purifier of the present invention, the cleaning inlet is provided on a rear surface of the main body, and a cleaning outlet is provided on an upper surface or a front surface of the main body. It is preferable that the heating inlet is provided on a rear surface, and a heating outlet is provided on a front surface of the main body.
According to this, since the heating air outlet is provided on the front surface of the main body and the cleaning air inlet is provided on the rear surface of the main body, the heating air outlet and the cleaning air inlet are largely separated from each other. Can be done. Therefore, the warm air blown out from the heating air outlet is not directly sucked from the cleaning inlet, so that the dust collecting filter is not deteriorated by the warm air.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a gas fan heater provided with an air purifier, which is an example of an embodiment of a hot air heater with an air purifier of the present invention, will be described with reference to FIGS. . FIG. 1 is an explanatory sectional view of a gas fan heater with an air purifier of the present embodiment, FIG. 2 is an explanatory view showing an operation panel thereof,
3 is a block diagram showing the circuit configuration, FIG. 4 is a flowchart showing the operation, and FIG. 5 is a flowchart showing another operation in the gas fan heater with the air purifier shown in FIG.

As shown in FIG. 1, the gas fan heater 1 with an air purifier according to the present embodiment has an air purifier 3 installed inside an upper part of a main body 2 and a gas heater serving as a hot air heater at a lower part of the main body 2. A fan heater 4 is provided. Further, a cleaning suction port 5 is provided on an upper rear surface of the main body 2, and a cleaning outlet 6 is provided on an upper surface of the main body 2. In addition, a heating inlet 7 is provided at a lower rear portion of the main body 2, and a heating outlet 8 is provided at a lower front portion of the main body 2.

The air purifier 3 includes a purifier case 9 inside the main body 2, and a purifying blower 10 is provided inside the purifier case 9. In addition, cleaning inlet 5
Is provided with a dust collecting filter 11 so as to cover the entire surface.

The gas fan heater 4 has a heater case 12 inside the main body 2, and a burner accommodating portion 13 is provided inside the heater case 12. A gas burner 14 serving as a heating source is provided inside the burner housing 13, and an air inlet 15 is provided at a lower rear portion of the burner housing 13. A heating blower 16 is provided below the burner housing 13 inside the heater case 12. In order to detect the temperature of the air heated by the gas burner 14, a thermistor 17 serving as a temperature detecting means is provided at an upper portion of the heater case 12.
Is provided. In the present embodiment, the air sucked from the heating inlet 7 is passed through the gap between the main body 2 and the heater case 12 from the cooling air inlet 18 provided at the lower front part of the heater case 12. Heating blower 1
6 to prevent the temperature of the front surface of the main body 2 from rising.

A controller 1 for controlling the operation of the air purifier 3 and the gas fan heater 4 is provided inside the main body 2.
9 are provided. The controller 19 includes a purifier control unit 20 for controlling the air purifier 3 and a heater control unit 21 for controlling the gas fan heater 4. Further, an operation panel 22 on which the user operates the air purifier 3 and the gas fan heater 4 is provided in front of the upper surface of the main body 2.

On the operation panel 22, as shown in FIG.
A heating operation switch 23 for turning on / off the heating operation by the gas fan heater 4 and a cleaning operation switch 24 for turning on / off the air cleaning operation of the air purifier 3 are provided. In the vicinity of the center, a set temperature display 25 indicating a set temperature set by the user and a room temperature display 26 indicating a current room temperature are provided. The operation panel 22 is further provided with a switch for setting a time and a switch for setting a timer, but these are the same as those known in the art, and the description thereof is omitted.

Next, the circuit configuration of the gas fan heater 1 with an air purifier of the present embodiment will be described. As shown in FIG. 3, the controller 19 includes a purifier control unit 20 and a heater control unit 21, and the heater control unit 21 includes an abnormal heating stop unit 27. Further, the heater control means 21 is connected to a proportional valve (not shown) for controlling the amount of gas supplied to the heating blower 16 and the gas burner 14 so that the rotation speed of the heating blower 16 and the combustion amount of the gas burner 14 are determined. Is controlling. The purifier control means 20 is connected to the cleaning blower 10 to control the number of revolutions of the cleaning blower 10 and the like, and is connected to the thermistor 17 to detect the temperature inside the gas fan heater 4 and detect the detected value. When the temperature reaches the second predetermined temperature, the operation of the cleaning blower 10 is stopped. The abnormal heating stop means 27 is connected to the thermistor 17 to detect the temperature inside the gas fan heater 4 and stop the operation of the gas burner 14 when the temperature reaches a first predetermined temperature. The heating blower 16 is a gas burner 1.
After stopping the combustion in Step 4, the operation is stopped within a predetermined time.

Next, the operation of the gas fan heater 1 with an air purifier when both the first predetermined temperature and the second predetermined temperature are set to 80 ° C. will be described with reference to FIG. In the present embodiment, the first predetermined temperature is set to 80 ° C. so that the controller 19 and the like do not deteriorate due to heat. Also, the second predetermined temperature is set to 80 ° C. This is because, in the present embodiment, a dust collection filter having a heat-resistant temperature of about 80 ° C. is used. Here, when the high-temperature air near the thermistor 17 rises to the vicinity of the cleaning suction port 5, the thermistor 1
The temperature is lowered to some extent from the time point detected in step 7 (about 10 ° C. in the present embodiment). Therefore, even when the second predetermined temperature is set to 80 ° C., which is the same as the first predetermined temperature, as in the present embodiment, the temperature of the air actually sucked from the cleaning inlet 5 is 80 ° C. or less. Therefore, deterioration of the dust collection filter 11 due to heat can be prevented.

In this embodiment, since the first predetermined temperature and the second predetermined temperature are both 80 ° C. as described above,
In the following description of the present embodiment, the first and second predetermined temperatures will be described as predetermined temperatures.

First, the operation of the gas fan heater 4 and the air cleaner 3 when the gas fan heater 4 is in an abnormal heating state will be described. In a state where the gas fan heater 4 and the air purifier 3 are operated at the same time, for example, when the number of rotations is reduced or the rotation is stopped due to the failure of the heating blower 16, the gas burner 14 burns the gas. The temperature inside the fan heater 4 rises. This increase in temperature is detected by the thermistor 17, and when the detected temperature becomes equal to or higher than the predetermined temperature, the abnormal heating stop means 27 stops the combustion of the gas burner 14.

In this embodiment, when the combustion of the gas burner 14 is stopped in the abnormally heated state, the operation of the cleaning blower 10 is stopped by the purifier control means 20. Therefore, when the gas fan heater 4 and the air purifier 3 are operated at the same time, the operation of the air purifier 3 is also stopped. At this time, an error code corresponding to the abnormal heating is displayed on the room temperature display 26 indicating the current room temperature, and the user is notified that the gas fan heater 4 has stopped due to the abnormal heating. Note that, in this state, when the user turns off the heating operation switch 23, the abnormal heating state is set to be reset.

As described above, even if the combustion of the gas burner 14 is stopped by the abnormal heating stop means 27, the inside of the gas fan heater 4 is in a high temperature state due to the heat at the time of combustion of the gas burner 14 and the residual heat of the gas burner 14. ing. In the present embodiment, since the heating suction port 7 is provided above the heating air outlet 8, the high-temperature air in the gas fan heater 4 is discharged as shown by an arrow c in FIG. Mainly flows out of the heating inlet 7 and rises along the rear surface of the main body 2.

In this state, when the user turns off the heating operation switch 23 to reset the abnormal heating state and then turns on the cleaning operation switch 24, the purifier control means 20 operates as follows. Is made. When the cleaning operation switch 24 is turned on (STEP 1), the purifier control means 20 detects the temperature with the thermistor 17 (STEP 2), and the detected temperature is a predetermined temperature of 80 ° C.
Is detected (STEP 3). When the temperature detected by the thermistor 17 is equal to or higher than the predetermined temperature (YES in STEP 3), the operation of the cleaning blower 10 is stopped and the operation of the air purifier 3 is prohibited (STEP 3).
4). As a result, when the gas fan heater 4 is in an abnormal heating state and the detected temperature of the thermistor 17 is equal to or higher than a predetermined temperature, the operation of the air purifier 3 is prohibited. The air heated by 4 is not sucked.

On the other hand, even if the gas fan heater 4 is stopped due to abnormal heating, if the detected temperature of the thermistor 17 becomes lower than the predetermined temperature due to elapse of time or the like (S
If NO in STEP3, the air purifier 3 is operated (STEP5). As described above, when the temperature detected by the thermistor 17 is lower than the predetermined temperature, the temperature of the air sucked from the cleaning inlet 5 is low even when the air cleaner 3 is operated. There is no deterioration. In the operation of the air purifier 3, the purifier control means 2
The signal of 0 causes the cleaning blower 10 to rotate, and air near the rear surface of the main body 2 is sucked from the cleaning suction port 5 as shown by an arrow a in FIG. The air sucked from the cleaning inlet 5 passes through the dust filter 11 and is cleaned. Then, the air is blown out from the cleaning outlet 6 toward the upper side of the main body 2. Then, if the clean operation switch 24 is turned off by the user or the operation is stopped by the operation of a timer (not shown) (YE in STEP 6).
S), the cleaning blower 1 according to the signal of the purifier control means 20
The rotation of 0 is stopped, and the operation of the air purifier 3 ends.

In the present embodiment, the first predetermined temperature is set to 80 ° C., but is not limited to this, and may be changed as appropriate according to the layout of the equipment. Also, the second predetermined temperature is set to 80 ° C. similarly to the first predetermined temperature,
The present invention is not limited to this, and may be changed as appropriate depending on the material of the dust collection filter 11 and the like. For example, if the first predetermined temperature is set to 90 ° C., which is higher than the second predetermined temperature of 80 ° C., the detected temperature of the thermistor 17 becomes lower due to a failure of the heating blower 16 due to a failure or the like. 90 ° C at the first predetermined temperature
, But may reach the second predetermined temperature of 80 ° C. At this time, the operation of the air purifier 3 is stopped before the gas fan heater 4 is stopped by the abnormal heating stop means 27. Thus, the operation of the air purifier 3 can be stopped before the high-temperature air flows out of the heating suction port 7 by stopping the gas fan heater 4 due to abnormal heating. High-temperature air suction can be prevented.

As described above, in this embodiment, since the temperature of the gas fan heater 4 is always detected by the thermistor 17 during the operation of the air purifier 3, when the temperature of the gas fan heater 4 rises for some reason, Can prohibit the operation of the air purifier 3 regardless of whether the gas fan heater 4 is stopped by the abnormal heating stop means 27.

When the operation of the gas fan heater 4 is finished, immediately after the combustion of the gas burner 14 is stopped, only the heating blower 16 is operated for a predetermined time, and
A post-purge operation for cooling the burner housing 13 and the gas burner 14 is performed. Therefore, at the end of the operation of the gas fan heater 4, the air heated by the gas burner 14 does not flow out of the heating suction port 7, so that the air purifier 3
Even if the above operation is performed, the dust collection filter 11 does not deteriorate due to heat.

Next, referring to FIG. 5, in the gas fan heater 1 with the air purifier shown in FIG. 1 described above, it is detected whether or not the gas fan heater 4 is stopped by the abnormal heating stop means 27 to perform air cleaning. The operation when judging whether or not the operation of the vessel 3 is possible will be described. In the present embodiment, the first predetermined temperature is set to 90 ° C., and the second predetermined temperature is set to 80 ° C.
Is set to

In this embodiment, the gas fan heater 4
If the temperature detected by the thermistor 17 reaches 90 ° C., which is the first predetermined temperature, while the gas fan heater 4 is operating alone, the abnormal heating stop means 27 stops the gas fan heater 4. When the cleaning operation switch 24 is turned on in this state (STEP 11), the purifier control means 20 checks whether the gas fan heater 4 has been stopped by the abnormal heating stop means 27 (STEP 12). In this case, since the gas fan heater 4 is stopped by the abnormal heating stop means 27 (YES in STEP 12), the purifier control means 20 detects the temperature of the thermistor 17 (STEP 12).
13). When the temperature detected by the thermistor 17 is equal to or higher than the second predetermined temperature of 80 ° C., (STE
(YES in P14), the operation of the cleaning fan 10 is prohibited, and the operation of the cleaning fan 10 is not performed (STEP 15). Thereby, the high-temperature air rising along the rear surface of the main body 2 is not sucked through the cleaning suction port 5.

On the other hand, if the gas fan heater 4 is operating normally while the clean operation switch 24 is on (STEP 11), the gas fan heater 4 does not stop abnormally (NO in STEP 12), and the air The purifier 3 is operated (STEP 16). Even if the gas fan heater 4 is stopped due to abnormal heating (YES in STEP 12), if the temperature detected by the thermistor 17 is lower than the second predetermined temperature (STE)
(NO in P14), the air purifier 3 is operated (S
TEP16). If the clean operation switch 24 is turned off by the user or the operation is stopped by the operation of a timer (not shown), the air cleaning operation is terminated (S
(YES in TEP17).

In each of the above embodiments, the cleaning suction port 5 is provided on the rear surface of the main body 2, but is not limited to this, and may be provided on both left and right side surfaces. Further, the cleaning inlet 5 may be provided on the front surface of the main body 2, and the cleaning outlet may be provided on the upper surface or the rear surface of the main body 2. Even in this case, since the cleaning suction port 5 and the heating blowout port 8 can be provided separately,
The warm air blown out from the heating outlet 8 is supplied to the cleaning inlet 5
It is possible to adopt a configuration in which it is difficult to suck directly from

Further, in the above-described embodiment, the gas fan heater 4 having the gas burner 14 as the heating source has been described as an example. However, the invention is not limited thereto, and an electric heater, a kerosene heater, or the like may be used as the heating source.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a gas fan heater with an air purifier as an example of an embodiment of the present invention.

FIG. 2 is an explanatory view showing an operation panel of the gas fan heater with the air purifier shown in FIG. 1;

FIG. 3 is a block diagram showing a circuit configuration of the gas fan heater with the air purifier of FIG. 1;

FIG. 4 is a flowchart showing the operation of the gas fan heater with an air purifier of FIG. 1;

FIG. 5 is a flowchart showing another operation of the gas fan heater with the air purifier of FIG. 1;

[Explanation of symbols]

1 ... Gas fan heater with air purifier (warm air heater with air purifier), 3 ... Air purifier, 4 ... Gas fan heater (hot air heater), 5 ... Suction port for cleaning, 6 ... Blow for cleaning Exit, 7
... heating inlet, 8 ... heating outlet, 10 ... cleaning blower, 14 ... gas burner (heating source), 16 ... heating blower, 17 ... thermistor (temperature detecting means), 20 ... purifier control means, 21 ... heater control means, 27 ... abnormal heating stop means.

Continued on the front page (72) Inventor Kazuki Nishio 2-26 Fukuzumi-cho, Nakagawa-ku, Nagoya-shi, Aichi

Claims (3)

[Claims] 1. A dust collecting filter, a purifying blower, and a heating air blower at an upper portion of a warm air heater provided with a heating source, a heating blower, a heating air inlet, and a heating air outlet. The cleaning air inlet provided separately from the mouth, and an air purifier including a cleaning air outlet provided separately from the heating air outlet, the hot air heater includes: Temperature detecting means for detecting a temperature in the hot air heater; and heating when the temperature detected by the temperature detecting means reaches a first predetermined temperature set so as not to deteriorate the hot air heater by heat. Heater control means having abnormal heating stop means for stopping the operation of the source, wherein the air purifier comprises a purifier control means for controlling the cleaning blower independently of the operation of the hot air heater. The cleaning suction port is provided separately from the heating air outlet. In the warm air heater equipped with an air purifier, the purifier control means is configured to perform the cleaning when the temperature detected by the temperature detection means is equal to or higher than a second predetermined temperature set so as not to deteriorate the dust collection filter due to heat. A warm air heater with an air purifier, comprising an overheat prevention means for inhibiting operation of the blower. 2. The cleaning device according to claim 1, wherein the overheating prevention unit is configured to stop the operation of the heating source by the abnormal heating stop unit, and when the temperature detected by the temperature detection unit is equal to or higher than the second predetermined temperature. The warm air heater with an air purifier according to claim 1, wherein the operation of the blower is prohibited. 3. A cleaning air inlet is provided on a rear surface of a main body of the warm air heater with an air purifier, a cleaning outlet is provided on an upper surface or a front surface of the main body, and the heating air is provided on a rear surface of the main body. The warm air heater with an air purifier according to claim 1 or 2, wherein an air inlet is provided, and a heating air outlet is provided on a front surface of the main body.