JPH07243704A - Hot blast deodorizing device - Google Patents

Abstract

PURPOSE:To easily perform heating and deodorization of malodor and provide a semipermanent deodorizing function without the need of changing a deodorizing material. CONSTITUTION:Arranged in an internal space 1a of a housing 1 formed between a front guard 2, which is mounted to an exhaust port 1f and has exhaust holes 2a, and an intake port ld, are a fan 4, which is drivingly rotated by a motor to generate an air flow from the intake port 1d to the exhaust port if, a plurality of radiating plates 6, which are arranged substantially in parallel to an air flow A between the fan 4 and the exhaust port 1f to face one another with a predetermined space therebetween, and rod-shaped heating elements 7 provided in predetermined spaces. An adsorbent catalyst coating layer formed on the surfaces of the radiating plates 6 for adsorbing a stinking component of the air flow A and a catalyst coating layer formed on the surfaces of the rod-shaped heating elements 7 are heated to first and third predetermined temperatures, respectively, whereby the stinking component is subjected to oxidation- decomposition to be made odorless.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air deodorizing device having a hot air generating function and a bad odor removing function,
In particular, it is characterized in that it can be used as a malodor removing device even in a state where the function of generating warm air is stopped, such as in summer.

[0002]

2. Description of the Related Art Conventionally, as a warm air deodorizing device that also serves as heating, a motor having a housing having an intake port and an exhaust port on its outer wall is rotated by a motor so that the airflow taken from the intake port is exhausted from the exhaust port. There is one in which a driven fan is provided, a deodorizing material such as activated carbon is arranged on the inlet side, and a honeycomb-shaped positive temperature coefficient heating element (hereinafter referred to as a PTC heater) is provided on the exhaust side. That is, the odorous components contained in the air flow sucked from the intake port are adsorbed and removed by the deodorizing material to deodorize, and the deodorized air flow is PT
After being heated by the C heater, it is discharged as warm air from the exhaust port.

However, since the physical adsorption method of deodorizing only the deodorizing material such as activated carbon is adopted, when the deodorizing material is used for deodorizing for a certain period of time, it becomes in an adsorption saturated state and loses its adsorption ability, so that the user cannot Regular replacement of deodorant materials was essential. In addition, when the deodorizing material is heated due to the temperature rise of the airflow with the passage of heating time or the heat conduction inside the equipment, the odor components adsorbed up to that point will be desorbed, and the source of the odor will be generated during heating. There was a case that became.

In order to solve the problem, a catalyst coating material capable of oxidizing and deodorizing the odorous components of the surrounding air flow to deodorize when heated to a predetermined temperature is arranged around the heating element. However, there is a warm air deodorizing device having a configuration in which the catalyst coating material is heated to a predetermined temperature by a heating element.

[0005]

However, in the hot air deodorizing apparatus using the catalyst coating material as described above, the catalyst coating material must be heated to a temperature equal to or higher than a predetermined temperature and the temperature state must be maintained. Since the deodorizing effect is lost, there is a problem that it cannot always be used as a deodorizing device in seasons other than the winter season when heating appliances are used.

In view of the above-mentioned conventional problems, the present invention has a simple structure, does not require replacement of deodorizing material, does not cause odor desorption during heating in winter, and is a deodorizing device even in summer. A warm air deodorizing device that can be used is provided.

[0007]

The hot air deodorizing device of the present invention provides an air flow from the intake port to the exhaust port in the internal space of the housing having the intake port and the exhaust port formed on the outer wall. A fan that is rotationally driven by a motor provided on the side of the intake port so as to move, and a fan that is arranged substantially parallel to the flow of the airflow and that has a predetermined space and faces each other. In a warm air device in which a plurality of heat radiating plates provided between the heat radiating plates and the heat radiating plates provided in the space between the heat radiating plates are respectively arranged, a predetermined value is predetermined on the surface of the heat generating element. When a first temperature is reached, a catalyst coating layer is formed to oxidize and decompose the odorous components of the air flow around the heating element to deodorize it, and a predetermined predetermined number is formed on the surface of the heat dissipation plate. Absorbs odorous components of the air stream until the temperature reaches 2 When the third predetermined temperature is reached, an adsorption catalyst coating layer is formed to oxidize and decompose the adsorbed odor and the odor of the air flow around the heat dissipation plate to deodorize it, and to the heating element. The first period in which the energization is stopped to rotate only the fan and the second period in which the energization to the heating element is started to stop the rotation of the fan are alternately repeated at a predetermined cycle. It is possible to selectively switch between a first mode for rotating the fan and a second mode for rotating the fan while energizing the heating element.

[0008]

In the warm air deodorizing apparatus of the present invention having the above-mentioned configuration, in the second mode of use as a warm air apparatus, the odorous component of the air flow is mainly oxidized by the catalyst coating layer formed on the surface of the heating element. In the first mode of decomposing and deodorizing, stopping the heat generation of the heating element and using it as a deodorizing device, the adsorption catalyst coating layer formed on the surface of the heat dissipation plate adsorbs and deodorizes the odorous component of the air flow, Since the adsorption catalyst coating layer is regularly heated to a predetermined third temperature to oxidize and decompose the odor components adsorbed on the adsorption catalyst coating layer to deodorize them, the odor components are efficiently deodorized. Moreover, it is possible to eliminate the need to replace the deodorizing material.

The plurality of heat radiating plates are arranged substantially parallel to the flow of the air flow, and are provided between the fan and the exhaust port so as to face each other with a predetermined space. Therefore, compared to a case where the airflow hits the surface of the heat sink orthogonally and strongly, noise is not generated, and the air blow can be made quiet.

Further, since the heating element is provided between the fan and the exhaust port, the thermal radiation energy of the heating element can be efficiently guided to the warming space, giving a warmer a comfortable heating feeling. Is something that can be done.

[0011]

EXAMPLE An example of the hot air deodorizing apparatus of the present invention will be described below with reference to FIGS. Figure 1
In FIG. 2, reference numeral 1 is a housing having an internal space 1a, and a rear outer wall 1b (FIG. 1) and a side outer wall 1 of the housing 1.
Intake ports 1d are respectively formed in c (FIG. 2), and the housing 1
An exhaust port 1f is formed in the front outer wall 1e. Reference numeral 2 denotes a front guard attached to the exhaust port 1f, and the front guard 2 has a plurality of exhaust holes 2a that are long in the lateral direction.

Reference numeral 3 denotes a motor that rotationally drives a fan 4 that draws in air in the radial direction and exhausts it in the axial direction. The motor 3 has a casing so that the fan 4 fixed to the rotating shaft of the motor 3 faces the exhaust port 1f. It is attached to the rear surface of the rear outer wall of the body 1.

Reference numeral 5 denotes a tubular air duct frame having a quadrangular cross section, and the air duct frame 5 is rotated by the fan 4 to draw the intake port 1d.
It is provided between the fan 4 and the exhaust hole 1f in order to more reliably form a blower path for the airflow A that is sucked in from and is guided to the exhaust hole 2a. Reference numeral 6 denotes a plurality of heat radiating plates, and the heat radiating plate 6 forms a predetermined space substantially parallel to the flow of the air flow A so as not to hinder the flow of the air flow A moving in the air passage and to generate no noise. They are provided in the air passage frame 5 so as to face each other. Although various metal plates can be used as the material of the heat dissipation plate 6, a highly conductive material such as an aluminum plated steel plate or an aluminum plate is preferable in consideration of thermal conductivity and workability.

Reference numeral 7 is a heating element, for example, two rod-shaped heating elements in which a resistance heating wire 9 such as a nichrome wire which is a heat source is built in a tubular insulator 10 such as a quartz tube, a glass tube or a ceramic tube. The axial direction of each rod-shaped heating element 7 is substantially orthogonal to the direction of the airflow A, and is provided between the two heat dissipation plates 6. Reference numeral 8 denotes a control unit composed of electronic components such as a triac and a microcomputer, and the control unit 8 controls the motor 3 according to a selected operation mode described later.
When the temperature sensor or the like (not shown) detects an abnormal situation such as abnormal heating of the motor 3 or the rod-shaped heating element 7, the motor 3 and the rod-shaped heating element 7 are controlled. Stop energizing to.

Next, the details of the radiation plate 6 and the rod-shaped heating element 7, and the adsorbed catalyst coating layer 11a and the catalyst coating layer 11b formed on their surfaces will be described with reference to FIGS. 3 and 4. To do. In FIG. 3, a catalyst coating layer 11b is provided on the surface of the tubular insulator 10. The adsorption catalyst coating layers 11a are provided on both surfaces of the heat dissipation plate 6 that face each other with the rod-shaped heating element 7 interposed therebetween.

Further, the portion of the heat radiating plate 6 adjacent to the rod-shaped heating element 7 is non-uniform in the radial direction of the rod-shaped heating element 7 due to thermal strain generated in the heat-radiating plate 6 which is non-uniformly heated by the rod-shaped heating element 7. In order to prevent deformation, a groove-shaped recess 12 is formed so that the radial distance of the heating element is substantially uniform.

The adsorbing catalyst coating layer 11a is, for example, an adsorbing material 11c that adsorbs an odorous component in the air when it is at room temperature or at a temperature lower than a predetermined second temperature, for example,
Zeolite and a catalyst material 11d capable of obtaining the effect of decomposing odorous components by oxidative decomposition when heated to a predetermined third temperature or higher, such as aluminum oxide, silicic acid, cerium oxide, This is a mixture of a carrier composed of at least one oxide of oxides such as zirconium oxide and titanium dioxide, on which a platinum group metal is supported.

The catalyst coating layer 11b of the rod-shaped heating element 7 is
The adsorbent material 11c such as zeolite that adsorbs an odor component in the air is removed from the components of the adsorption catalyst coating layer 11a provided on the heat dissipation plate 6, and is heated to a predetermined first temperature or higher. Only in this case, odorous components in the air are oxidatively decomposed to make them odorless.

The catalyst coating layer 11b of the rod-shaped heating element 7
Although it was considered to provide the adsorption catalyst coating layer 11a as an alternative, the rod-shaped heating element 7 which is generating heat for heating in winter or the like has an extremely high temperature as compared with the place where the adsorption catalyst coating layer 11a of the heat dissipation plate 6 is located. When the adsorption catalyst coating layer 11a is brought to the high temperature state, the adsorption material 11c of the adsorption catalyst coating layer 11a loses the odor component adsorption effect only during the high temperature state. Further, the zeolite or the like used as the adsorbing material 11c reaches the high temperature state repeatedly by heating the rod-shaped heating element 7, and the higher the temperature of the high temperature state is, the second predetermined Since the effect of adsorbing odor tends to decrease even when the temperature is lower than the temperature, the adsorption catalyst coating layer 1 is formed on the surface of the rod-shaped heating element 7 that has the highest temperature.
It can be said that the provision of 1a is not preferable in terms of deodorization efficiency and cost.

As a method of forming the adsorption catalyst coating layer 11a of the heat dissipation plate 6 and the catalyst coating layer 11b of the rod-shaped heating element 7, a coating method, a dipping method, a printing method, a transfer method can be considered. Either method is possible by adjusting the viscosity of the.

FIG. 4 is a sectional front view showing the axial direction of the rod-shaped heating element 7, showing the winding pitch state of the resistance heating wire 9. L indicates the total winding length of the heat radiating portion of the resistance heating wire, and the sealing end portion of the rod-shaped heating element 7 outside the heat radiating portion indicated by the total winding length L is shown in the drawing. Is omitted.

When the resistance heating wire 9 of the rod-shaped heating element 7 has a constant winding pitch, the temperature distribution in the axial direction of the heating element 7 is high due to the natural convection and heat dissipation. Therefore, the temperature of the end portion of the heat radiating portion becomes low, so that a large temperature difference occurs between the central portion and the end portion. In general, the radiant energy is proportional to the fourth power of the absolute temperature, so that the temperature distribution of the heat radiating plate 6 heated by the heat radiation from the rod-shaped heating element 7 causes a further large temperature difference. That is, also in the axial direction of the rod-shaped heating element 7, the center facing portion of the radiation plate 6 adjacent to the center of the rod-shaped heating element 7 and the end portion of the radiation plate 6 adjacent to the end of the rod-shaped heating element 7 are opposed to each other. There is a large temperature difference between
Due to the thermal strain due to the temperature difference, the heat dissipation plate 6 is deformed unevenly.

As a countermeasure against this, in the present embodiment, as shown in FIG. 4, centering on the portions distant from the center of the heat radiating portion indicated by the total winding length L on both sides by about 1/4 L, respectively. The winding pitch is reduced to disperse the heat generation density. With this configuration, the temperature distribution in the axial direction of the rod-shaped heating element 7 can be made uniform, and the temperature difference between the central facing portion and the end facing portion of the radiation plate 6 becomes small. It is possible to prevent the heat dissipation plate 6 from being deformed unevenly. As a result, the adsorption catalyst coating layer 11a of the heat dissipation plate 6 is less likely to be damaged by the deformation of the heat dissipation plate 6.

As another measure other than changing the heat generation density of the rod-shaped heating element 7, the shape of the recess 12 may be changed according to the change in the size of the rod-shaped heating element 7 described above. That is, that is, by changing the shape of the concave portion 12 sequentially according to the temperature difference in the axial direction of the rod-shaped heating element 7, the heat dissipation plate 6 in the axial direction of the rod-shaped heating element 7 can be obtained.
The heating temperature of the (adsorption catalyst coating layer 11a) can also be made uniform.

The operation of the hot air deodorizing device constructed as described above will be described below with reference to FIGS.
1 to 4, operation modes of the warm air deodorizing apparatus of the present invention include a first mode used in the summer and a second mode used in the winter. In the operation in the first mode, basically, the energization of the rod-shaped heating element 7 is stopped, and the energization of the motor 3 energizes the fan 4
Only the chimney is rotated to blow air at room temperature. In the operation in the second mode, the fan 4 is rotated by energization of the motor 3 to generate the air flow A, and the air flow A in the air duct frame 5 and the heat radiation are generated by the energization of the rod-shaped heating element 7. The plate 6 is heated.

The switching between the first mode and the second mode is automatically switched by the user's selection or by the detection output from the room temperature sensor or the like by the control unit 8 or a microcomputer incorporated in the controller or the like. .

First, the details of the operation in the first mode will be described. When the fan 4 is rotated by the energized motor 3 in a state where the energization to the rod-shaped heating element 7 is stopped, the air outside the housing 1 moves to the intake port 1d, the fan 4, the air passage frame 5, An airflow A is formed which sequentially moves to the outside of the housing 1 through the exhaust port 1f. When the air flow A passes through the air passage frame 5, the odorous components are adsorbed by the adsorbent material 11c of the adsorption catalyst coating layer 11a, and the air flow A is deodorized.

However, in the adsorption of the odorous component by the adsorption catalyst coating layer 11a, as time passes,
The adsorption catalyst coating layer 11a is filled with the adsorbed odor component and becomes saturated, resulting in a decrease in the deodorizing effect. Therefore, it becomes necessary to deodorize and regenerate the odorous components adsorbed on the adsorption catalyst coating layer 11a by oxidative decomposition. Therefore, the rod-shaped heating element 7 is energized to cause the resistance heating wire 9 to generate heat only for a predetermined time, and the adsorption catalyst coating layer 11a of the heat dissipation plate 6 is then heated.
Is heated to a temperature equal to or higher than a predetermined third temperature. The odorous components that have been adsorbed by the adsorption catalyst coating layer 11a by this heating are oxidatively decomposed and adsorbed by the catalytic action of the catalyst material 11d in the adsorption catalyst coating layer 11a without scattering the desorbing odorous components. The heating regeneration of the catalyst coating layer 11a is completed.

Therefore, in the first mode, by stopping the energization of the rod-shaped heating element 7 and rotating only the fan 4, the first period in which the odorous component is adsorbed by the adsorption catalyst coating layer 11a, and the rod-shaped The heating element 7 is energized and the second period in which the adsorption catalyst coating layer 11a is heated and regenerated is controlled to be alternately repeated at a predetermined cycle.

Incidentally, the predetermined third temperature for causing the adsorption catalyst coating layer 11a to perform the heating regeneration,
The predetermined first temperature for oxidatively decomposing and deodorizing the odorous components in the air by the catalyst coating layer 11b is the adsorption catalyst coating layer 11a and the catalyst which are temperatures at which the catalytic action is produced. This is the temperature at which the catalyst material 11d contained in the coating layer 11b, that is, the activation temperature of the platinum group metal is heated to a temperature equal to or higher than the activation temperature. This activation temperature varies depending on the type of odor component, but it is 2 for normal daily odor components.
It is about 50 ° C.

In the first mode, during the second period in which the heating regeneration is performed, the energization of the motor 3 is stopped at the same time as the energization of the rod-shaped heating element 7 is started, and the fan 4 is rotated. By stopping the heating, the heat dissipation to the outside of the warm air deodorizing device is suppressed as much as possible, and the adsorption catalyst coating layer 11a is raised to the activation temperature in a short time, and the regeneration of the adsorption force of the adsorption catalyst coating layer 11a is completed in a short time. It is desirable to let

Next, details of the operation in the second mode will be described. With the rod-shaped heating element 7 energized, the motor 3
When the fan 4 is rotated by energizing the air, the air outside the housing 1 is discharged from the air inlet 1d, the fan 4, and the fan 4 as in the first mode.
The airflow A is exhausted to the outside of the housing 1 through the exhaust port 1f in the air duct frame 5. When the air flow A passes through the air duct frame 5, the odorous component of the air flow A is generated by the adsorption catalyst coating layer 11a of the heat dissipation plate 6 and the catalyst coating layer 11b of the rod-shaped heating element 7 which have reached the activation temperature. Will be oxidatively decomposed and deodorized.

The air flow A that has been deodorized and has been heated by the rod-shaped heating element 7 and the heat dissipation plate 6 to become warm air is exhausted to the outside of the housing 1 through the exhaust hole 2a, so that the air is collected in a warming space such as a room. Heating. Further, the respective heat radiations from the rod-shaped heating element 7 and the adsorption catalyst coating layer 11a and the catalyst coating layer 11b heated by the heat radiation of the rod-shaped heating element 7 directly pass through the exhaust hole 2a and the heating space. Since it is radiated to the room, the heating effect for the heating space is enhanced.

Incidentally, the adsorption catalyst coating layer 11a and the catalyst coating layer 1
Among the components contained in 1b, since oxides such as aluminum oxide, silicic acid, cerium oxide, zirconium oxide, and titanium dioxide are far-infrared radiation materials, they have been absorbed through the adsorption catalyst coating layer 11a or the catalyst coating layer 11b. The heat radiation of the rod-shaped heating element 7 will generate more heat radiation energy in the spectral wavelength region 3 to 25 μm which is the heat absorption band of the human body and clothes, and the heating space will not only emit warm air but also heat in the far infrared region. Good heating by radiation can be obtained.

Further, the motor 3 by the heat radiation of the rod-shaped heating element 7
Can be reduced by cooling with cold air sucked through the intake port 1d and shielding by the fan 4 provided between the motor 3 and the rod-shaped heating element 7, and the surface of the fan 4 can be reduced. The heat radiation energy to the exhaust hole 2a can be increased by utilizing the reflection by

Further, as shown in FIG. 3, by arranging the heating element 7 in a rod shape so as to be orthogonal to the air blowing direction, the radiative heat transfer area to the front exhaust hole 2a can be maximized. Therefore, as compared with the case where the rod-shaped heating element 7 is arranged in parallel to the blowing direction, much more radiant heat energy can be emitted to the front exhaust hole 2a, and efficient heating can be obtained. Become.

Next, control of energization to the rod-shaped heating element 7 and deodorizing characteristics in the second mode will be described with reference to FIG. The figure shows the control waveforms a and b of the control unit 8 which are output when the energization to the rod-shaped heating element 7 is controlled by switching.
3 is a timing chart showing an operating state consisting of a waveform c showing a change in the surface temperature of the catalyst coating layer 11b formed on the heating element 7 which is represented respectively in synchronization with the control waveforms a and b, and its timing. The chart is shown for the case of thermal equilibrium.

The temperature control performed by the switching control can be set in two stages of "strong" indicated by control waveform B and "weak" indicated by control waveform B, and t ₁ is the ON period of the energization. , T ₂ is an OFF period of the energization, and t ₀ is a period of one cycle including the ON period and the OFF period. Further, Tc is the activation temperature of the catalyst material 11d of the adsorption catalyst coating layer 11a and the catalyst coating layer 11b, and the catalyst coating of the rod-shaped heating element 7 when T ₁ and T ₂ are set to “strong” and “weak”, respectively. It is the surface temperature of the layer 11b. tt indicates a period in which the surface temperature T ₂ in “weak” is equal to or higher than the activation temperature Tc.

"Strong" means that electricity is continuously applied, and the setting condition is always T ₁ > Tc. Since switching control is performed for "weak", one cycle period t ₀
There is a temperature difference in the surface temperature T ₂ between the _two , but by controlling the switching so that the surface temperature T ₂ changes from a temperature higher than the activation temperature Tc to a lower temperature, T ₂ >
It is set so as to obtain a period tt that is Tc. As a result, the odorous components of the airflow A located around the catalyst coating layer 11b are oxidatively decomposed and deodorized by the catalyst coating layer 11b for the period tt. Then, the adsorption catalyst coating layer 11a of the heat dissipation plate 6 has an activation temperature Tc within the period tt.
The adsorbed odorous components that have been heated and desorbed by heating as the temperature rises are the adsorbed catalyst coating layer 11
The catalyst material 11d of a is oxidatively decomposed and deodorized by the catalytic action, and the adsorbed catalyst coating layer 11a oxidizes and decomposes the odorous components of the air flow A around the adsorbed catalyst coating layer 11a in the same manner as the catalyst coating layer 11b. Become.

Next, the setting conditions for the period t ₀ of one cycle will be described. When the warm air deodorizing device having the heating function of the present embodiment is a device having a relatively large amount of electric power having a rated power of about 500 W or more, when the rod-shaped heating element 7 is turned on, a voltage drop of the power source is caused. The brightness of the room lighting connected to the same power line as the warm air deodorizing device decreases instantaneously, and there is a problem that if the frequency of decrease in brightness is high per hour, it will cause discomfort to the user. Sometimes.

Then, when the frequency of occurrence was actually investigated by a usage monitor, the result was that the period t ₀ was required to be 40 seconds at the shortest. Further, in terms of heating feeling, when the operation is “weak”, if the period t ₀ is too large,
The temperature difference of the blown air when the rod-shaped heating element 7 is ON and when it is OFF becomes large, which causes discomfort during use. Also in this case, according to the monitoring result, it was good if the period t ₀ was up to 100 seconds. Therefore, the period t ₀ is 40 seconds to 100
It is preferable to set it in seconds.

In the present embodiment, the control is performed in two stages of "strong" and "weak", but even in the case of more than this stage control, the temperature setting condition for conducting the energization control is the technical idea of the present embodiment. It is needless to say that the same effect can be obtained based on the above.

In this embodiment, the energization control of the rod-shaped heating element 7 is performed by the time proportional switching control. However, when the phase control which does not generate a temperature difference is performed instead of the switching control, "weak" is generated. surface temperature Te ₂ of the catalyst coating layer 11b becomes constant temperature in usually the surface temperature Te ₂
Is often lower than the activation temperature Tc of the catalyst coating layer 11b, and is inevitably set to a state where the deodorizing ability is lost.
In that case, the odorous components adsorbed by the adsorption catalyst coating layer 11a cannot be deodorized by being oxidized and decomposed by the adsorption catalyst coating layer 11a, and the odorous components of the air flow A around the catalyst coating layer 11b are not covered by the catalyst coating. The layer 11b cannot be deodorized by being oxidatively decomposed.

Therefore, in the phase control, when the condition is set so that the energization is controlled in the state where the surface temperature Te ₂ is equal to or lower than the activation temperature Tc of the catalyst coating layer 11b, the adsorption in the first mode is performed. It is preferable that the catalyst coating layer 11a is similarly heated and regenerated.

In this embodiment, the adsorption catalyst coating layer 11a and the catalyst coating layer 11b are formed on both surfaces of the heat dissipation plate 6 and the surface of the rod-shaped heating element 7, respectively. The construction conditions such as the area of the layer 11a and the catalyst coating layer 11b, the heat generation amount of the rod-shaped heating element 7, the shape and position of the heat dissipation plate 6, the shape of the air duct frame 5 satisfy the odor adsorption condition and the heating regeneration necessary temperature condition. In this case, it goes without saying that the adsorption catalyst coating layer 11a and the catalyst coating layer 11b can be formed on the surface of the heat dissipation plate 6. Furthermore, if the air passage frame 5 can secure a heat transfer distance and a shape that satisfy the above heating regeneration required temperature condition, the adsorption catalyst coating layer 11a or the catalyst coating layer 11b is also formed on the surface of the air passage frame 5. By forming the, the deodorizing ability of adsorbing the odorous component or oxidizing and decomposing the odorous component to deodorize it may be improved.

[0046]

As described above, according to the warm air deodorizing apparatus of the present invention, in the second mode used as the heater, the odor of the air flow is mainly due to the catalyst coating layer formed on the surface of the adsorption heating element. In the first mode, in which the components are oxidatively decomposed to make them odorless, and the heat generation of the heating element is stopped to use as a deodorizing device, the odorous components of the airflow are adsorbed and deodorized by the adsorption catalyst coating layer formed on the surface of the heat dissipation plate. In addition, the adsorption catalyst coating layer can be heated to a predetermined temperature on a regular basis, and the odor components adsorbed on the adsorption catalyst coating layer can be oxidatively decomposed and deodorized, so that the odor components can be efficiently deodorized. Moreover, it is possible to eliminate the need to replace the deodorizing material.

Further, since the adsorption catalyst coating layer is formed on the surface of the heat sink whose temperature is lower than that of the heating element which is in a very high temperature state, the adsorption power of the odorous component by the adsorption catalyst coating layer is formed. Will not cause any problems even if used for a long time.

The plurality of heat radiating plates are arranged substantially parallel to the flow of the air flow, and are provided between the fan and the exhaust port so as to face each other with a predetermined space. Therefore, compared to a case where the airflow hits the surface of the heat sink orthogonally and strongly, noise is not generated, and the air blow can be made quiet.

Furthermore, since the heating element is provided between the fan and the exhaust port, the thermal radiation energy of the heating element can be efficiently guided to the heating space,
It is possible to give the warmer a comfortable feeling of heating.

The catalyst coating layer and the adsorption catalyst coating layer are
It is formed by mixing a catalyst material in which a platinum group metal is supported on a carrier composed of at least one oxide of oxides such as aluminum oxide, silicic acid, cerium oxide, zirconium oxide, and titanium dioxide, and an adsorbent material. This makes it possible to efficiently oxidize and decompose the adsorbed odor to make it odorless.

Further, by forming a recess in the portion of the heat dissipation plate adjacent to the heating element so as to keep the distance from the heating element substantially uniform, and forming an adsorption catalyst coating layer on the surface in the recess,
The heat dissipation plate is less likely to be deformed due to temperature distortion, and the damage to the adsorption catalyst coating layer is extremely reduced.

[Brief description of drawings]

FIG. 1 is a sectional side view of a warm air deodorizing device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of a warm air deodorizing device according to an embodiment of the present invention.

FIG. 3 is a sectional side view showing a main part of a warm air deodorizing device according to an embodiment of the present invention.

FIG. 4 is a sectional front view showing a main part of a warm air deodorizing device according to an embodiment of the present invention.

FIG. 5 is a timing chart showing an operating state of the warm air deodorizing device in one embodiment of the present invention.

[Explanation of symbols]

 1 Case 1a Internal Space 1d Inlet 1f Exhaust 2 Front Guard 2a Exhaust 3 Motor 4 Fan 5 Airflow Frame 6 Radiator 7 Rod-shaped Heating Element 8 Control Section 9 Resistance Heating Wire 10 Tubular Insulator 11a Adsorption Catalyst Coating Layer 11b Catalyst coating layer 11c Adsorption material 11d Catalyst material 12 Recess

Front page continuation (72) Inventor Tsugenori Okahara, 1-8, Koshinmachi, Takamatsu-shi, Kagawa Matsushita Judenko Kogyo Co., Ltd. Within the corporation

Claims (3)

[Claims] 1. A motor provided on the side of the intake port so as to move an air flow from the intake port to the exhaust port in an internal space of a housing in which an intake port and an exhaust port are formed in an outer wall portion. And a plurality of heat dissipating units disposed between the fan and the exhaust port so as to face each other with a predetermined space, the fan being rotated by A plate and a heating element provided in the space between the heat radiating plates are respectively arranged, and when the predetermined first temperature is reached on the surface of the heating element, air around the heating element is arranged. Forming a catalyst coating layer that oxidatively decomposes the odor component of the stream to make it odorless, and absorbs the odor component of the air stream on the surface of the heat dissipation plate until reaching a second predetermined temperature, When the temperature reaches a third predetermined temperature, A first period in which the adsorption catalyst coating layer that oxidizes and decomposes the odor of the air flow around the heat dissipation plate to deodorize is formed, and at the same time, the power supply to the heating element is stopped and only the fan is rotated, and the heating element. A first mode in which a second period in which power is supplied to the fan and the rotation of the fan is stopped is alternately repeated in a predetermined cycle, and the fan is rotated while power is supplied to the heating element. A warm air deodorizing device characterized in that the second mode can be selectively switched. 2. A catalyst material comprising a platinum group metal supported on a carrier comprising at least one oxide selected from the group consisting of oxides such as aluminum oxide, silicic acid, cerium oxide, zirconium oxide and titanium dioxide. The hot air deodorizing device according to claim 1, wherein the hot air deodorizing device is made of a mixture with an adsorbent material containing zeolite as a main component. 3. A heat-dissipating plate adjacent to the heating element is provided with a concave portion for making the distance from the heating element substantially uniform, and an adsorption catalyst coating layer is formed on the surface of the concave portion. The warm air deodorizing device according to claim 1.