JP2000320897A - Hot air heater with air purifier - Google Patents

Abstract

(57) [Problem] The present invention relates to a configuration of a hot air heating device provided with an air purifier, which increases a dust collection rate and an odor removal rate at the time of operation of an air purifying unit, and quickly reduces dust and odor. Removes odors and detects clogging due to long-term use of the filter.If an obstacle is placed in front of the hot air outlet during heating operation and simultaneous operation, abnormalities can be detected early and reliably. This is to prevent damage. SOLUTION: A shutter 24 that opens and closes an air passage in a bypass air passage 17 that does not pass through a filter 11 at an air suction port of an air purification unit provided above a warm air heating unit, and a filter that covers the air purification filter 11 11 inside the grill 15 that the user removes when replacing
7 near the grill opening 16 communicating with the
And a wind speed sensor 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art FIG. 3 shows a conventional hot air heating device equipped with an air purifier. In a hot air heating section for sending out and heating the exhaust gas 6 generated by the burner 1 through the combustion chamber 2 by the convection fan 4 through the combustion chamber 2 and an air cleaning section located above the hot air heating section, A filter 11 for removing dust and odor, an air purifying fan 12 for taking in and blowing outside air, a duct 14 connecting the air purifying fan suction port 13 and the filter 11, and a filter 11 for covering the filter 11 so that the user can replace the filter. A grill 15 to be removed, and a bypass air passage 17 communicating with the grill opening 16 without passing through the filter 11 in a part of the duct 14 are provided, and a temperature detector 21 is provided in the bypass air passage.

Next, the operation will be described. The exhaust gas 6 generated by burning the gas with the burner 1 is sent out from the hot-air outlet 5 as hot air 3 by the convection fan 4 through the combustion chamber 2 to perform heating.

Further, in the air purifying section, the air purifying fan 12 rotates, and the air purifying air 22a is sucked through the suction port 18 of the grill 15 and dust and odor are removed by the filter 11, so that the air is cleaned from the outlet 19. Air 22b is blown out.

[0005] Further, when the warm air flows backward due to some abnormality during the heating operation, and the air purifying section mainly composed of resin parts is exposed to a high temperature, the temperature detector 21 provided in the bypass air passage is provided. The operation stops the heating operation.

[0006]

As described above, during the heating operation, it is necessary to quickly detect the backflow of the hot air generated at the time of the abnormality, and at the same time, in the air cleaning section, the dust collection rate and the odor. In order to improve the removal rate, it is required to minimize the leak between the duct connecting the filter and the fan suction port. However, in the above configuration, air leaks occur from the bypass air passage, which leads to a reduction in the dust collection rate and a reduction in the odor removal rate. In addition, if the air purifying unit is operated for a long time, dust or the like adheres to the filter to lower the dust collection rate and the odor removal rate, but the user does not know the clogging state.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to open a shutter of a bypass air passage provided in an air purifying section during a heating operation, and to return hot air due to some abnormality. Then, the temperature is detected by a temperature detector provided near the grill opening, and when the temperature exceeds a set value, the operation is stopped to prevent deformation of the resin parts and the like.

In addition, while the air purifying section alone is in operation, the shutter of the bypass air passage is periodically opened for a certain period of time, and only during that time, the maximum air flow mode is set to check the clogged state of the filter. Is closed, and the gap between the duct connecting the filter and the fan suction port is closed to eliminate air leaks caused by suction of the fan, thereby improving dust collection efficiency and odor removal rate.

In addition, the shutter of the bypass air passage is opened while the air purifying section and the hot air heating section are operating at the same time, and a temperature detection provided near the opening of the grill when the hot air flows backward due to some abnormality. The temperature is detected by a container, and when the temperature exceeds a set value, the operation is stopped to prevent deformation of the resin parts and the like. Further, the air purifying unit is always in the maximum air volume mode when in the maximum air volume mode, and is periodically put into the maximum air volume mode for a certain period of time at other times to detect the wind speed and check the filter clogging state.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first aspect of the present invention is a burner, a combustion chamber for mixing exhaust gas generated by combustion with air taken in from the outside, a convection fan for sending out hot air, and a hot air outlet therefor. And a hot air heating unit composed of a convection filter that takes in air for combustion, and an air purification unit integrally provided with a partition wall provided above the hot air heating unit to remove dust and odor. A filter, an air purifying fan that takes in and blows outside air, a duct that connects the fan suction port of this air purifying fan to the filter, a grill that covers the filter and that the user removes when replacing the filter, and a part of the duct Equipped with a bypass air passage communicating with the opening of the grill without passing through the filter,
A shutter for opening and closing the bypass air passage is provided in the middle of the bypass air passage, and a temperature detector and a wind speed sensor are provided on the bypass air passage entrance side of the shutter and near the grill opening, and during the heating operation. A control device is provided for opening the shutter of the bypass air passage provided in the air purifying unit and opening the air purifying unit intermittently at the same time.

When the hot air flows backward due to some abnormality, the air purifying section is intermittently operated. Therefore, when the air purifying section tries to be sucked in by the air purifying fan, a temperature detector provided near the grill opening is used. The temperature is detected, and when the temperature exceeds a set value, the operation is stopped to prevent deformation of the resin parts and the like.

According to a second aspect of the present invention, the control device periodically opens the shutter of the bypass air passage for a certain period of time while only the air purifying unit is operating, and the air purifying unit enters the maximum air volume mode only during that time to increase the wind speed. Is detected, and the clogged state of the filter is periodically detected.

When the wind speed exceeds a preset value, an indication is made on the main body operation unit by an LED lamp or the like,
Notifies the clogged condition of the filter. Also, since the shutter of the bypass air path is normally closed, the gap between the duct connecting the filter and the fan suction port is closed, eliminating air leaks due to fan suction and improving dust collection efficiency and odor removal rate. improves. Therefore, odor and dust can be quickly removed.

According to a third aspect of the present invention, the control device opens the shutter of the bypass air passage when the air purifying unit and the hot air heating unit are simultaneously operated, and the air purifying unit is always in the maximum air volume mode, In the air volume mode, the maximum air volume mode is periodically set for a certain period of time to detect an increase in wind speed and to periodically detect the clogged state of the filter.

When the hot air flows backward due to some abnormality, the temperature is detected by a temperature detector provided in the vicinity of the grill opening, and when the temperature exceeds a set value, the operation is stopped and deformation of the resin parts and the like is stopped. To prevent. In addition, the air purifier enters the maximum air volume mode at all times in the maximum air volume mode and periodically at other times, detects the increase in wind speed, and when the air speed exceeds the preset wind speed value, Display on the operation unit to notify the clogged state of the filter.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a hot air heating apparatus with an air purifier according to Embodiment 1 of the present invention.

In FIG. 1, the hot air heating section is the same as that of the conventional example, and the description is omitted. An air purifier is located above the hot air heater. A grill 15 sucks air from a grill suction port 18 here. Reference numeral 11 denotes a filter for removing dust and odor. The filter 11 includes a deodorizing section made of activated carbon or the like that absorbs odors, and a cotton or granular dust collecting section for removing dust particles. 19 is an outlet of the purified air 22b. Below that, an air purifying fan 12 is mounted in the air purifying air passage 20. 14 is a duct, a filter 1
1 and the fan suction port 13 of the air purifying fan 12 are connected to each other without any gap. The air purifying fan 12, the fan suction port 13, and the duct 14 are formed of resin.

If the filter 11 is used for a long time, the deodorizing performance and the dust collecting performance deteriorate, and it is necessary to replace the filter 11 in about one to two years. The grill 15 covers the filter 11 and is removed by the user when the filter 11 is replaced. This is also molded with resin. 17 is a bypass air duct, duct 1
4 and the grill opening 16 without the filter 11
Is in communication with Reference numeral 24 denotes a shutter, which is electrically linked with the control device 23 to open and close the bypass air passage 17. 21
Is a temperature detector, which is on the inlet side of the bypass air passage 17 and near the grill opening 16, and stops the heating operation when the temperature exceeds a set value. Reference numeral 25 denotes a wind speed sensor which is located on the inlet side of the bypass air passage 17 and near the grill opening 16 like the temperature detector 21. Reference numeral 26 denotes an operation unit on which an LED lamp and the like are mounted. The air purifying fan 12, the convection fan 4, the temperature detector 21, the wind speed sensor 25, and the operation unit 26 are electrically connected to the control device 23 in the same manner as the shutter 24 by a broken line in the drawing.

Next, the operation will be described. During the heating operation, the convection fan 4 sends out the warm air 3 from the warm air outlet 5 on the lower front surface to perform heating. At this time, the air cleaning section is performing an intermittent operation, the shutter 24 provided in the bypass air passage 17 is opened, and the temperature detector 21 monitors a normal temperature.

When an obstacle is placed near the hot air outlet 5, the warm air hits the obstacle and approaches the grill 15. At this time, warm air is blown in because the air cleaning fan 12 is operating intermittently. Since the temperature of the hot air reaches a maximum of 100 K, the sucked hot air may damage parts made of resin and other main parts. here,
The temperature detector 21 detects the temperature of the hot air and controls the control device 2.
3, when the temperature reaches a certain temperature or higher, the control device 23 stops the heating operation and prevents deformation of the resin component. Even during the heating operation, the air purifying section is operated intermittently, so that an abnormal temperature of the hot air can be detected early.

(Embodiment 2) FIG. 2 is a sectional view of a hot air heating apparatus with an air purifier according to Embodiment 2 of the present invention.

In FIG. 2, the hot air heating section is the same as that of the conventional example, and the description is omitted. While only the air purifying unit is operating, the shutter 24 in the bypass air passage 17 is periodically opened for a certain period of time, and the air purifying fan 12 is set to the maximum air volume mode.
An increase in the wind speed of the filter-free grill opening 16 caused by clogging due to long-term use of the filter 11 is detected, and when the wind speed exceeds a preset wind speed value, the LED lamp of the operation unit 26 is displayed, and the filter This is to signal the blockage. Also, since the shutter 24 of the bypass air passage 17 is normally closed, the grill 15
The air-purifying air 22a is sucked by the air-purifying fan 12 only from the suction port 18, and the clean air 22b is blown out from the air outlet 19. Since the gap between the fan inlet 13 and the duct 14 connecting the filter 11 is closed and air leak due to the suction of the fan 12 is eliminated, the dust collection efficiency and the odor removal rate are improved. Therefore, dust and odor can be quickly removed.

(Embodiment 3) When the air purifying section and the hot air heating section are operated simultaneously, the control of the hot air heating operation is prioritized, and the shutter 24 in the bypass air passage 17 provided in the air purifying section is opened. It is. Its configuration is the same as that of FIG. When hot air flows backward due to some abnormality, the temperature is detected by a temperature detector 21 provided near the grill opening, and when the temperature exceeds a set value, the operation is stopped to prevent deformation of resin parts and the like. Furthermore, the air purifying section is for air purifying fans.
2 is always in the maximum air volume mode, and at other times, it is put into the maximum air volume mode periodically for a certain period of time. As in the second embodiment, an increase in the wind speed is detected, and the wind speed exceeds the preset wind speed value. In this case, an LED lamp of the operation unit 26 is displayed to notify the clogging of the filter.

[0025]

As described above, according to the present invention, the shutter provided in the bypass air passage of the air purifying section is opened and the air purifying section is intermittent even when only the hot air heating section is operated. By driving, when an obstacle is placed near the hot air outlet, or when a blanket is covered, when the hot air hits the obstacle and approaches the grill, the hot air is sucked in by the air cleaning fan, The temperature detector detects the temperature of the hot air, and when the temperature reaches a certain temperature or higher, the operation of the hot air heating is stopped, and deformation of the resin parts and damage of the main parts due to heat can be prevented.

When only the air purifying section is operated, the shutter provided in the bypass air passage is periodically opened for a certain period of time, and the air purifying section is set to the maximum air volume mode only during that time. An increase in the wind speed at the grill opening is detected, and when the wind speed exceeds a preset wind speed value, a lamp on the operation unit is displayed to notify the user of the filter clogging. In addition, since the shutter of the bypass air path is normally closed, there is no gap between the duct connecting the fan suction port and the filter, there is no air leak due to the suction of the fan, and the dust collection efficiency and the odor removal rate are improved. . Therefore, dust and odor can be quickly removed.

Further, when the air purifying section and the hot air heating section are operated at the same time, the shutter in the bypass air path is opened, so that when the hot air hits an obstacle and approaches the grill in an abnormal condition, the hot air is blown by the air. The air is sucked in by the cleaning fan, and the temperature detector detects the temperature of the hot air. When the temperature reaches a certain temperature or higher, the heating operation is stopped, and deformation of the resin parts and damage of the main parts due to heat can be prevented. Set the air purifying fan to the maximum air flow mode, detect an increase in the wind speed at the grill opening caused by clogging due to long-term use of the filter, etc., and display a lamp on the operation unit when the wind speed exceeds a preset value. , To inform the user of clogging of the filter.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a hot air heating device with an air purifier according to Embodiments 1 and 3 of the present invention.

FIG. 2 is a cross-sectional view of a hot air heating device with an air purifier according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of a hot air heating device with an air purifier in a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 burner 2 combustion chamber 4 convection fan 5 hot air outlet 11 filter 12 air purifying fan 13 fan inlet 14 duct 15 grill 16 grill opening 17 bypass air passage 21 temperature detector 23 control device 24 shutter 25 wind speed sensor 26 operation Department

Claims (3)

[Claims] 1. A burner, a combustion chamber for mixing exhaust gas generated by combustion with air taken in from the outside, a convection fan for sending out hot air and a hot air outlet thereof, and a convection air for taking in combustion air. In a hot air heating section composed of a filter, and in an air purifying section integrally provided with a partition provided above the hot air heating section, a filter for removing dust and odor, and an air purifier that takes in outside air and blows air. Fan, a duct connecting the fan suction port of the air purifying fan to a filter, a grill covering the filter, and a bypass air passage communicating with a part of the duct to an opening of the grill without passing through the filter. A shutter for opening and closing the bypass air passage is provided in the middle of the bypass air passage; and A temperature detector and a wind speed sensor are provided in the vicinity of the opening, and when the temperature reaches a predetermined temperature, the combustion is stopped, an increase in the wind speed is detected, the clogged state of the filter is displayed on the main body operation unit, and only the hot air heating unit is provided. A hot-air heating device with an air purifier equipped with a control device that opens the shutter of the bypass air passage and opens the air purifier intermittently during operation. 2. The control device according to claim 1, wherein the shutter of the bypass air passage is periodically opened for a certain period of time while only the air cleaning section is operating,
2. The hot air heating device with an air purifier according to claim 1, wherein the air purifier is placed in the maximum air volume mode only during that time, and detects an increase in wind speed to periodically detect a clogged state of the filter. 3. The control device opens the shutter of the bypass air passage during simultaneous operation of the air purifying section and the hot air heating section, and the air purifying section is always in the maximum air volume mode and in other air volume modes. 2. The hot air heating apparatus with an air purifier according to claim 1, wherein the maximum air volume mode is periodically set for a certain period of time to detect an increase in wind speed and to periodically detect a clogged state of the filter.