JP5774161B2 - Air treatment equipment - Google Patents

Description

  The present invention relates to a kitchen air treatment apparatus.

  Conventionally, kitchen ventilation fans that are installed in the upper part of a heating cooker and exhaust to the outside have been common. However, a lot of air-conditioning loss occurs because the room air is discharged, and it is necessary to provide an air supply port in order to reduce the negative pressure in the room due to the exhaust air. For this reason, the contaminated air generated from the cooking object heated by the heating cooker is purified and circulated indoors without exhausting to the outside. Techniques are disclosed that pass through and purify a porous structure filter or the like, blow the air indoors, and maintain the deodorization performance by activating the catalyst by a photocatalyst deodorization apparatus or heater heating (see, for example, Patent Document 1 and Patent Document 2). ).

JP 2006-322648 A JP 2010-207658 A

  Purifying contaminated air generated during cooking and circulating it indoors saves energy and is more comfortable by reducing air-conditioning load and preventing pollen / dust and cold outdoor air from entering due to negative pressure in the room. Realization of space is possible.

  However, according to the above-described conventional technology, in the case where the photocatalytic deodorizing device is provided in order to maintain the performance, the discharging device is expensive and the structure is complicated, and the filter for removing ozone harmful to the human body is provided. There was a need. In order to purify the polluted air, oil smoke and odor are adsorbed by a porous structure filter and decomposed by a catalyst or the like, and periodic maintenance is required because of deterioration over a long period of use.

  For heaters that regenerate and maintain the performance of the catalyst, etc. by heating and do not require maintenance, use a heat insulating material to prevent the heat and odor generated during heating from diffusing into the room. There is a problem that the device is complicated and expensive because it has to cover the surroundings and provide an exhaust shutter.

Furthermore, in these items, the cooking device is limited to a halogen heater or an electromagnetic cooking device that does not generate CO _2, and it is necessary to open a window to ventilate because the humidity generated during cooking cannot be discharged. During cooling, the heat of cooking stays indoors, so there is a problem that air conditioning is required more than ventilation.

  In view of the above problems, there has been a demand for an air treatment device that does not require maintenance, prevents indoor diffusion of heat and odor during heating with a simple structure, and has no restrictions on the heating cooker used.

  The present invention has been made in view of the above, and in an air treatment device that circulates contaminated air generated during cooking into a room, the deodorizing performance is maintained and regenerated at a low cost with a simple structure. Without limitation, the object is to obtain an air treatment device that can save energy throughout the year regardless of the timing of cooling and heating.

  In order to solve the above-described problems and achieve the object, the present invention provides a suction port for collecting contaminated air generated from an object to be cooked heated by a heating cooker located below, and an upper side of the suction port. An air passage arranged in parallel to the air passage, and a blower that blows the contaminated air upward from the air passage, and is connected to the upper side of the blower outlet and connected to the outdoor in the upward direction. A chamber having a built-in exhaust air passage, a circulation air passage connected to an indoor opening in a side surface direction with a room opening, and a damper for switching a wind direction to the exhaust air passage and the circulation air passage, A deodorizing device provided between the damper and the indoor opening, provided with a deodorizing agent and a heater; means for detecting an estimated amount of oily smoke / odor adhering to the deodorizing agent; and a heater based on the estimated amount of adhesion Control hand to determine the heating time of The deodorizing device includes a plurality of fins arranged in parallel with each other having at least one bent portion in contact with the heater, and the fin is carried by the deodorizing agent. .

  According to the present invention, an air treatment device includes a suction port that collects contaminated air generated from an object to be cooked heated by a heating cooker, an air passage disposed above the suction port, and a rear side of the air passage. Contaminated air is blown from the room to the chamber above the blower by a blower that is arranged at the top and blows upward. The chamber is located directly above the blower outlet and communicates with the exhaust air passage that communicates with the outside in the upward direction, the circulation air passage facing the room, and the air direction to these exhaust air passage and the circulation air passage. Equipped with a damper.

  By switching the direction of the damper, the air is blown outdoors or indoors. The air blowing to the outside or the room is switched depending on the air condition in the room. When the air is blown into the room, the purified air is sent out by a deodorizing device that is located between the damper and the indoor opening of the circulation air passage and that adsorbs and decomposes oily smoke and odor. After the deodorizer is used repeatedly, before the performance of the deodorizer deteriorates, the heater is energized to heat the deodorizer and restore the performance.

Since the heat and odor generated during heating is higher than room temperature, it is naturally discharged to the outside through the exhaust air passage of the chamber, so the indoor diffusion of heat and odor can be prevented at a low cost with a simple structure. it can. The exhaust air passage communicating with the outside, so located right above the air outlet of the blower, it is possible to pressure loss to outside to secure the exhaust air volume of the small outdoor cooking device CO ₂ It can also be used in a gas cooker that generates. Therefore, the application is not limited to a halogen heater or an electromagnetic cooking device, and the air treatment device can prevent dew condensation in the room, and has the effect of combining energy saving, applicability, and convenience.

FIG. 1 is a side sectional view showing a configuration of an air processing apparatus according to a conventional embodiment. FIG. 2 is a side sectional view showing a configuration of an air processing apparatus according to a conventional form. FIG. 3 is a front view showing the air treatment device according to the embodiment of the present invention. FIG. 4 is a side sectional view showing the air treatment apparatus according to the embodiment of the present invention. FIGS. 5-1 is a figure which shows the damper position at the time of ventilation concerning embodiment of this invention. FIGS. FIG. 5-2 is a diagram illustrating a damper position during circulation according to the embodiment of the present invention. FIG. 6 is a diagram schematically illustrating the configuration of the control circuit according to the embodiment of the present invention. FIG. 7 is a diagram showing air flow characteristics of the air treatment device according to the embodiment of the present invention. FIG. 8 is a diagram showing the temperature characteristics of the activities of the deodorizer (manganese oxide) and Pd (palladium) according to the embodiment of the present invention. FIG. 9 is a cross-sectional view of fins constituting the heater according to the embodiment of the present invention. FIG. 10 is a diagram showing the odor removal performance of the deodorizing apparatus according to the embodiment of the present invention. FIG. 11 is a diagram illustrating a grease filter according to an embodiment of the present invention. FIG. 12 is a diagram showing the correlation between the amount of oil smoke / odor adhesion and the heating time of the heater according to the embodiment of the present invention. FIG. 13: is a figure which shows the table which calculates the amount of oil smoke and odor adhesion from the operation time of the air processing apparatus concerning embodiment of this invention. FIG. 14: is a figure which shows the table which calculates the amount of oil smoke and odor adhesion from the cooking time of the heating cooker concerning embodiment of this invention. FIG. 15: is a schematic block diagram which shows the means to detect the mass of the deodorizing apparatus concerning embodiment of this invention.

  Embodiments of an air treatment device according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
1 and 2 are side cross-sectional views showing an air treatment apparatus according to a conventional embodiment. FIG. 3 is a front view showing the air treatment device according to the embodiment of the present invention, and FIG. 4 is a side sectional view showing the air treatment device according to the embodiment of the present invention.

  In the air processing apparatus according to the conventional form, for example, as shown in FIG. 1, the contaminated air generated from the cooking object heated by the heating cooker passes through the deodorizer and the photodeodorization catalyst via the blower. The purified air is circulated and discharged into the room. The photocatalyst device activates the photocatalyst by discharge, and maintains the deodorization performance by the oxidizing action of ozone generated at the time of discharge. However, the discharge device is expensive and has a complicated structure, and a filter for removing ozone harmful to the human body is provided. There is a need.

  In addition, as in the air treatment device shown in FIG. 2, in the air treatment device that is provided with a heater and a deodorizing agent and is activated by heating, the heat and odor generated during heating are prevented from diffusing into the room. Therefore, it is necessary to cover the periphery of the heating element with a heat insulating material or to provide an exhaust port shutter or the like. Therefore, there is a problem that the configuration of the device is complicated and expensive.

Furthermore, since these air treatment apparatuses do not have a function of ensuring indoor O ₂ concentration or a function of exhausting moisture, a gas cooker that generates CO ₂ cannot be used as a heating cooker. Limited to halogen heaters and electromagnetic cookers. Moreover, since the humidity generated during cooking cannot be discharged, it is necessary to open a window for ventilation. Furthermore, since the heat of cooking stays indoors during cooling in summer, there is a problem that air conditioning is required more than ventilation.

  As shown in FIG. 3 and FIG. 4, the air treatment apparatus according to the embodiment of the present invention includes a suction port 1 that collects contaminated air generated from an object to be cooked heated by a heating cooker. Contaminated air is blown from the room to the chamber 4 above the blower 3 by the air passage 2 disposed above 1 and the blower 3 disposed behind the air passage 2 and blowing upward.

  As shown in FIG. 4, the chamber 4 is located immediately above the outlet of the blower 3 and has an exhaust air passage 5 that communicates with the outside in the upward direction, a circulation air passage 6 that faces the room, and these exhaust air passages. 5 and a damper 7 for switching the wind direction to the circulation air path 6 is provided. Depending on the direction of the damper 7, as shown in FIGS. 5-1 and 5-2, the air blowing is switched to the outdoors (FIG. 5-1) or indoors (FIG. 5-2). FIG. 5A shows the damper position 7a and the flow of wind during ventilation. FIG. 5-2 shows the damper position 7b and the flow of wind during circulation.

  The air blowing to the outside or the room is switched to the air blowing path that provides an energy saving effect depending on the air condition in the room, such as ventilation in the summer and circulation in the winter. When the air is blown indoors, purified air is sent out by a deodorizing device 8 that is located between the damper 7 and the indoor opening of the circulation air passage 6 and has a deodorizing agent that adsorbs and decomposes oil smoke and odor. .

  In the embodiment according to the present invention, the activity of the deodorant is heated by heating the deodorant by energizing the heater 20 before the oily smoke / odor is deposited on the deodorizer provided in the deodorizer 8 after repeated use. To decompose oil smoke and odor. The energizing means for the heater 20 may be periodically performed by the user by pressing a heater energizing switch installed in an apparatus operation unit (not shown), or periodically by a timer installed in the apparatus. It is also possible to use a method of energizing the battery. FIG. 6 shows a schematic diagram of the configuration of the control circuit 12 according to the embodiment of the present invention.

  Since the heat and odor generated at the time of heating by the heater 20 is higher than room temperature, the air is naturally discharged to the outside by the draft effect through the exhaust air passage 5 of the chamber 4 without blowing air. It has a simple structure and can be prevented at low cost. Further, since the exhaust air passage 5 communicating with the outdoors is located immediately above the outlet of the blower 3, the pressure loss to the outdoors is small, and the amount of exhaust air to the outdoors can be secured.

The pressure loss at the opening of the chamber 4 and the exhaust air passage 5 in the present embodiment is about 20 Pa when the air volume is 400 m ³ / h. FIG. 7 shows the air flow characteristics of the air processing apparatus and the exhaust type kitchen fan according to the present embodiment. As shown in FIG. 7, it is possible to secure an air volume substantially equal to that of the air processing apparatus according to the present embodiment by using a blower 3 of a kitchen ventilation fan that performs exhaust.

In addition, since the air treatment apparatus according to the present embodiment can secure a sufficient air volume, for example, if a control for adjusting the ventilation volume according to the amount of gas generated is provided, the O ₂ concentration can be secured. For this reason, a heating cooker is not limited to a halogen heater or an electromagnetic cooker, but can be applied to a gas cooker that generates CO ₂ . In addition, in the case where condensation occurs due to indoor and outdoor air conditions and cooking conditions, it is possible to suppress condensation by performing indoor dehumidification by ventilation.

In order to suppress this dew condensation, it is considered that an air volume of about 400 m ³ / h is necessary. However, the exhaust type air duct 5 is positioned immediately above the outlet of the blower 3 to reduce the pressure loss. An air volume of 400 m ³ / h or more can be secured by using the blower 3 of the kitchen ventilation fan, and condensation can be suppressed. Further, in the conventional technique, the heat of the cooking device stays in the room even during the cooling in summer, so that air conditioning is required more than ventilation.

  However, according to the configuration of the air treatment device according to the present embodiment, it is possible to switch between ventilation and circulation by changing the direction of the damper 7, so that the season can be changed by switching to ventilation in summer and circulation in winter. Regardless of this, energy saving effects can be ensured all year round.

  As a deodorizing agent used in the deodorizing apparatus 8, it is possible to activate at a low temperature in addition to being cheaper than using noble metal by using manganese oxide. For this reason, the attached oil smoke and odor can be decomposed by heating at an oil ignition temperature of 360 ° C. or less, and can be safely regenerated. As an example, a temperature characteristic of each activity is shown in FIG. 8 using a Pd (palladium) catalyst as a comparison target.

As shown in FIG. 8, a Pd (palladium) catalyst requires a high temperature of about 300 ° C., but a MnO ₂ (manganese dioxide) catalyst exhibits a large activity at about 100 ° C. The performance of the catalyst can be maintained even if it is regenerated and decomposed and used for a long time.

  In addition, the heater 20 used in the deodorizing device has a self-temperature controllability if a PTC heater having a positive temperature coefficient resistance change characteristic is used, so that the heater 20 can be safely and energy-saving without being abnormally high in temperature. it can. That is, by using the heater 20 having the characteristic that the electric resistance suddenly increases at 180 ° C. or higher, even when the control circuit 12 of the heater 20 fails, the heater 20 does not rise to 180 ° C. or higher and is safe.

  The deodorizing agent used in the deodorizing device 8 can reduce heat loss when it is carried on the metal fins 21 in contact with the heater 20 than the method in which the heater 20 and the deodorizing agent are indirectly heated via air, thereby saving energy. Sex can be secured. Specifically, as shown in the upper left of FIG. 9, a manganese oxide catalyst is supported on the fins 21 made of aluminum sheet metal together with zeolite. Furthermore, as the size of the deodorizing device 8 is reduced, it can be easily incorporated into the product and the overall size can be reduced. However, since the air passage area is reduced accordingly, the pressure loss is large and the air volume is reduced. Further, since the area where the odor is adsorbed and brought into contact with the deodorizer is reduced, the deodorization performance is reduced.

  In order to solve this problem, in the present embodiment, the air passage composed of the metal fins 21 is bent as shown in FIG. Performance can be ensured. The size of the blower 3 used in the present embodiment is 360 mm in width, 350 mm in height, and 225 mm in depth in consideration of blowing performance and the like. At this time, as described above, in the present embodiment, the deodorizing device 8 is configured in the upper portion of the blower 3, and the upper portion of the blower 3 is a space of the chamber 4 connected to the exhaust air passage 5 and the circulation air passage 6.

  In addition, the deodorizing device 8 has a width of 400 mm × a height of 125 mm × a depth of about 45 mm so that the height of the product of the entire air treatment device is kept within 600 mm and the top of the blower 3 has no irregularities and has a good design appearance. Is necessary. The reason for keeping the height of the product within 600 mm is that the air treatment device is separated from the top surface of the heating cooker when combined with a heating cooker with a height of 800 mm in a room with a ceiling height of 2200 mm from the floor. This is because the distance of 800 mm sufficient for disaster prevention can be secured.

As shown in FIG. 9, the shape of the fin 21 in the present embodiment is bent twice at each of the inlet and outlet portions of the air passage of the fin 21 to ensure the above-mentioned size and ensure pressure loss and deodorizing performance. We were able to. The pressure loss is about 26 Pa when the air volume is 200 m ³ / h. As a result of confirming the deodorization performance by the test of the removal rate of 100 ppm acetaldehyde in the 1 m ³ box, it was confirmed that the odor was removed in a short time as compared with the fin without bending as shown in FIG.

  By installing a grease filter 9 for removing oil smoke and steam in front of the suction port 1 and preventing contamination of components leeward from the suction port 1, maintenance can be further reduced and energy saving can be obtained. Since the grease filter 9 is located at a low position, it is easy to clean by the user, and by removing oily smoke having a large particle diameter, the contamination of the blower 3 and the deodorant that are high and difficult to maintain is reduced. Can do. In addition, since the amount of oil smoke and the like attached to the heater deodorizer is suppressed, power consumption during heating can be suppressed.

  It was found that when two or more layers of 10-mesh filters were installed as the grease filter 9, the amount of oil smoke adhering to the leeward blower 3 or the like was extremely small, so that it could be suppressed to a level that would not bother without cleaning. If the size of the mesh is fine, the oil smoke collection rate is good, but clogging due to steam generated during cooking occurs. In order to prevent clogging, the opening size should be 10 mesh or more. However, if the opening is large, one layer does not provide sufficient trapping properties, so two layers are used. In addition, since 10 meshes can be layered on two layers, there is no problem with cleanability. As shown in Fig. 11, the two layers are collected and fixed with a protective frame such as a metal frame. The filter can be easily handled without being bulky.

  As shown in FIG. 3, a partition plate is provided on the side of the deodorizing device 8 in the chamber 4, and spaces 10a and 10b outside the air passage are separated from the contaminated air on the side from the partition plate. By installing damper opening and closing devices and heater wiring sections in the spaces 10a and 10b outside these air passages, these electrical components have no contact with polluted air, ensuring long-term reliability without being treated for water and dust. can do.

  Further, a partition plate is provided between the air passage 2 and the blower 3, and a space 11 outside the air passage that is separated from the contaminated air is provided, and a control circuit 12 that controls the operation of the blower 3, the heater 20, and the like is disposed here. By doing so, these electrical components are free from contact with contaminated air, and long-term reliability can be ensured without waterproofing and dustproofing. Since the casing of the blower 3 has a shape close to a circle, a space is generated when the air passage is rectangular, and the control circuit 12 can be disposed.

  In addition, by providing a heat-sensing fireproof damper 13 in the exhaust air passage 5 communicating with the outdoors, when ignited from a pan or the like when cooking tempura, etc., or ignited from the heater 20 in the deodorizer 8 It can sense heat and block the air path. As a result, it is possible to prevent the spread of fire through the piping, and to ensure safety. The heat detection method of the fire damper 13 may be a method using a sensor such as a thermistor, but a simpler structure can be realized by adopting a method in which a spring is operated by a thermal fuse in which metal is melted.

  Further, a means for measuring the mass of the deodorizing device 8 by providing a mass sensor 14 in the support structure portion of the deodorizing device 8 and reading the output signal of the mass sensor 14 with the control circuit 12 as shown in the schematic configuration diagram of FIG. Provide. That is, as shown in FIG. 6, the control circuit 12 includes oil smoke / odor amount detection means 22 that detects an estimated amount of attachment of the oil smoke / odor amount. In this case, the mass sensor 14 serves as the oil smoke / odor amount detection means 22.

  Although the mass sensor 14 is not shown in detail, as shown in FIG. 15, if the mass of the deodorizing device 8, specifically, the mass of the deodorizing agent provided in the deodorizing device 8 can be measured, how will it be? Any configuration may be used. The control circuit 12 stores the mass measurement result of the deodorizing device 8 by the mass sensor 14, and calculates the estimated adhesion amount of the attached oil smoke / odor from the change amount of the mass measurement result.

  Based on this estimated adhesion amount, the control circuit 12 determines the heating time of the heater 20 necessary for decomposing the oily smoke and odor adhering to the deodorizer. For example, the control circuit 12 has a correlation diagram between the amount of adhesion of oil smoke / odor [mg] and the heating time [sec] as shown in the example of FIG. 12, and based on this, the heating time is optimized. Can do. Note that the correlation diagram between the heating time of the heater 20 and the amount of oil smoke / odor attached to decompose the oil smoke / odor attached to the deodorizer as shown in FIG. 12 depends on the performance of the deodorizer 8 or the experimental results. Set based on.

  As the oil smoke / odor amount detection means 22, there is a realization method in which the oil smoke / odor amount detection means 22 is incorporated in the control circuit 12 separately from the above. For example, the control circuit 12 further includes an adhesion amount calculation table as shown in the example of FIG. 13, stores the operation notch and operation time of the air processing device (blower 3), and sends it using the adhesion amount calculation table of FIG. 13. It is possible to calculate the estimated amount of attached oil smoke / odor on the deodorizer according to the integrated value of the air volume. Based on the estimated adhesion amount thus obtained, the heating time of the heater 20 necessary for decomposing the oil smoke and odor adhering to the deodorizer can be optimized based on the correlation diagram as shown in the example of FIG.

  Note that the adhesion amount calculation table of FIG. 13 is such that the estimated adhesion amount of oil smoke / odor adhering to the deodorant increases in proportion to the operation air volume and operation time of the air treatment device or as the operation air volume or operation time increases. And is set based on the performance of the deodorizing device 8. Further, the value of the estimated adhesion amount can be set based on the result of the experiment. Furthermore, when the operation notch of the air treatment device is continuously changed, the estimated adhesion amount is calculated by integrating the calculated values based on the operation time of each operation notch.

  As another realization method in which the oil smoke / odor amount detection means 22 is incorporated in the control circuit 12, for example, the control circuit 12 may further include an adhesion amount calculation table as shown in the example of FIG. The control circuit 12 receives the signal of the operation state of the heating cooker, stores the heating power and cooking time (heating time), and uses the attached amount calculation table of FIG. 14 as a deodorizer according to the integrated value of cooking time. It is possible to calculate the estimated amount of attached oily smoke / odor. From the adhesion equivalent amount thus obtained, the heating time of the heater 20 necessary for decomposing the oil smoke and odor adhering to the deodorizer can be optimized based on the correlation diagram as shown in the example of FIG.

  In addition, the adhesion amount calculation table of FIG. 14 shows that the estimated adhesion amount of oily smoke / odor adhering to the deodorizer increases in proportion to the heating power and cooking time of the heating cooker or as the heating power or operating time of the heating cooker increases. It is set to increase, and is set based on the performance of the deodorizing device 8. Further, the value of the estimated adhesion amount can be set based on the result of the experiment. Further, when the heating power of the heating cooker is continuously changed, the estimated adhesion amount is calculated by integrating the calculated values of the heating amount based on the cooking time of each heating power.

  Furthermore, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent requirements.

  For example, even if some constituent elements are deleted from all the constituent elements shown in each of the above embodiments, the problem described in the column of the problem to be solved by the invention can be solved, and described in the column of the effect of the invention. In the case where the obtained effect can be obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention. Furthermore, you may combine the structural requirements in the said embodiment suitably.

  As described above, the air treatment apparatus according to the present invention is useful for energy saving throughout the year, and in particular, includes a deodorizing apparatus that does not require maintenance, and the cooking device is not limited. It is suitable for a kitchen air treatment apparatus capable of ensuring a comfortable space in the kitchen.

  DESCRIPTION OF SYMBOLS 1 Intake port, 2 air paths, 3 air blowers, 4 chambers, 5 exhaust air paths, 6 circulation air paths, 7 damper, 7a damper position at the time of ventilation, 7b damper position at the time of circulation, 8 deodorizing device, 9 grease filter, 10a , 10b, 11 Space outside the air passage, 12 Control circuit, 13 Fire damper, 14 Mass sensor, 20 Heater, 21 Fin, 22 Oil smoke / odor amount detection means.

Claims (6)

A suction port for collecting contaminated air generated from the cooking object heated by the cooking device located below;
An air passage disposed above the inlet;
A blower that is arranged in parallel with the air path, and blows the contaminated air upward from the air path;
An exhaust air passage connected above the blower outlet of the blower and connected to the outside in the upward direction, a circulation air passage connected to the interior of the side facing the indoor opening, the exhaust air passage and the circulation air A chamber with a built-in damper for switching the wind direction to the road,
A deodorizing device including a deodorizing agent and a heater located between the damper and the indoor opening;
Means for detecting the estimated amount of oil smoke / odor adhering to the deodorizer;
Control means for determining the heating time of the heater based on the estimated adhesion amount;
With
The deodorizing apparatus includes a plurality of fins arranged in parallel with each other in contact with the heater and having at least one or more bent portions, the deodorizing agent is carried by the fins ,
The chamber is provided with a space laterally separated from the exhaust air passage and the circulation air passage by a partition plate, and the damper opening and closing device and the heater wiring portion are arranged in the space. Air treatment device. The air processing apparatus according to claim 1, wherein the detecting unit measures a weight of the deodorizer and detects the estimated adhesion amount based on a change in the weight. The air treatment apparatus according to claim 1 or 2, wherein the deodorizing agent is manganese oxide. The air treatment apparatus according to any one of claims 1 to 3, further comprising a grease filter that allows the contaminated air to pass under the suction port. The space separated from the said air path by the partition plate is provided in the side of the said air path, The control circuit of the said air blower and the said heater is arrange | positioned in the said space. The any one of Claim 1 to 4 characterized by the above-mentioned. The air treatment apparatus according to item 1. The air treatment apparatus according to any one of claims 1 to 5 , wherein the exhaust air passage includes a heat-sensitive fireproof damper.

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