JP6432325B2 - Blower with deodorizing function and control circuit - Google Patents

Description

  The present invention relates to a blower with a deodorizing function and a control circuit.

  Conventionally, in a cooker that performs roaster cooking, in order to improve the performance of a catalyst for deodorizing smoke generated when roaster cooking is performed, a blower fan that forcibly discharges smoke passing through the catalyst, and the catalyst (For example, Patent Document 1).

JP 2006-302788 A

  In the cooking device of the above-mentioned patent document 1, in addition to the blower fan, a catalyst and a heater for heating the catalyst are provided, which hinders the downsizing of the physique.

  An object of this invention is to provide the blower with a deodorizing function and control circuit which aimed at size reduction of the physique in view of the said point.

In order to achieve the above object, according to the first aspect of the present invention, in the blower with a deodorizing function, a plurality of blades (31) supported by the rotating shaft (41) are provided, and the air flow is accompanied by rotation of the rotating shaft. From a fan (30) that generates odors, an electric motor (40) that rotates the fan via a rotating shaft, and a catalyst that adsorbs and decomposes odorous components formed in a film shape on each blade surface of a plurality of blades And an induction heating coil (100) for inductively heating the fan, and by heating the catalyst layer for each blade by induction heating using the induction heating coil, each blade is adsorbed on the catalyst layer. Decomposes odorous components ,
The fan is made of a material having thermal conductivity and conductivity,
The plurality of wings are arranged in the circumferential direction around the rotation axis,
The fan includes a support member (32) that supports the plurality of blades from the other side in the axial direction of the rotating shaft,
The induction heating coil generates heat in the support member by induction heating of the support member.
When heat is transferred from the support member to the catalyst layer for each blade through the plurality of blades, the catalyst layer for each blade decomposes the adsorbed odor component,
The induction heating coil is arranged on the side opposite to the plurality of blades with respect to the support member,
The support member is provided with a recess (32c, 32d) that is recessed on one side in the axial direction of the rotation shaft.
The induction heating coil is arranged in the recess .

  According to the first aspect of the present invention, the catalyst layer is formed in a film shape on each blade surface of the plurality of blades. In addition to this, the fan is heated by induction heating using an induction heating coil. For this reason, it is not necessary to provide a space for housing the catalyst layer and the catalyst heating heater. Therefore, the blower with a deodorizing function which aimed at size reduction of a physique can be provided.

  However, the blade surface is a surface formed on the outer side of the blade regardless of the front and back.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a figure which shows the cross-sectional structure of the air blower with a deodorizing function in 1st Embodiment of this invention. It is a flowchart which shows the control processing of the motor control circuit and induction heating control circuit of FIG. It is a flowchart which shows the detail of a part of control processing of FIG. It is a timing chart which shows the rotation speed of the electric motor at the time of the odor adsorption process of FIG. 2, and the output of the coil for induction heating. It is a timing chart which shows the rotation speed of the electric motor at the time of the catalyst heating process of FIG. 2, the output of the coil for induction heating, and the catalyst temperature. 3 is a timing chart showing the rotation speed of the electric motor, the output of the induction heating coil, and the catalyst temperature during the catalyst cooling / exhaust process of FIG. It is a figure which shows the experimental data which show a change in the fan surface temperature at the time of induction heating in the air blower with a deodorizing function of FIG. It is a figure which shows the experimental data which show the change in the fan surface temperature at the time of catalyst cooling in the air blower with a deodorizing function of FIG. It is a figure which shows the cross-sectional structure of the air blower with a deodorizing function in 2nd Embodiment of this invention. It is a figure which shows the cross-sectional structure of the air blower with a deodorizing function in 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.

(First embodiment)
The whole structure of 1st Embodiment of the air blower 1 with a deodorizing function of this invention is shown in FIG.

  As shown in FIG. 1, the blower 1 with a deodorizing function includes a case 20, a fan 30, an electric motor 40, a motor drive circuit 50, a motor control circuit 60, an induction heating drive circuit 70, an induction heating control circuit 80, and an induction A heating coil 100 is provided.

  The case 20 includes an air suction port 21 and an air exhaust port 22 while housing the fan 30, the electric motor 40, and the motor drive circuit 50. The fan 30 constitutes a centrifugal fan, and includes a plurality of blades 31, a main plate 32, and a ring member 33. In the present embodiment, the case 20 is made of, for example, a metal material.

  The plurality of blades 31 are each formed in a thin plate shape, and are arranged at equal intervals in the circumferential direction around the axis of the rotating shaft 41. Each of the plurality of blades 31 is disposed such that the front surface faces one side in the rotation direction and the back surface faces the other side in the rotation direction. The front surface and the back surface of the blade 31 constitute a blade surface formed on the outer side of the blade 31, respectively. The blade surface is a surface formed outside of the blade 31. A catalyst layer is formed for each blade 31 on the front and back surfaces of the plurality of blades 31.

  The catalyst layer of the present embodiment is formed in a film shape on the front and back surfaces of each blade 31 for each blade 31. As the plurality of blades 31, those having a plurality of irregularities formed by roughing the front and back surfaces thereof are used. A catalyst layer is formed on the front and back surfaces of the plurality of blades 31 by attaching the catalyst to the front and back surfaces of the plurality of blades 31 subjected to the rough surface processing. The catalyst layer forms a plurality of irregularities along the plurality of irregularities formed on the front and back surfaces of the blade 31. For this reason, the catalyst layer can ensure the area which contacts an airflow. The catalyst plays a role of decomposing odorous components into carbon dioxide and water. As the catalyst, for example, palladium can be used.

  In the present embodiment, plating, sputtering, or the like can be used as a method for attaching palladium to the front and back surfaces of the blade 31.

  The main plate 32 has a disk shape centered on the rotation shaft 41 and a shape in which a radial center side 32a centering on the rotation shaft 41 is convex to one axial side of the rotation shaft 41 (upper side in FIG. 1). Is formed. The outer peripheral side 32b of the main plate 32 is inclined so as to go from the radially central side toward the radially outer side toward the other axial side (lower side in FIG. 1). The outer peripheral side 32b is a part located on the radially outer side of the main plate 32 with respect to the radially central side 32a.

  The main plate 32 is a support member that supports the plurality of blades 31 from the other axial side (the lower side in FIG. 1) of the rotating shaft 41. The ring member 33 is formed in a ring shape with the rotation shaft 41 as a center, and is a support member that supports the plurality of blades 31 from one axial direction side (the upper side in FIG. 1) of the rotation shaft 41.

  In the present embodiment, the plurality of blades 31, the main plate 32, and the ring member 33 can be made of a metal material having both thermal conductivity and conductivity (for example, S45C: carbon steel for mechanical structure).

  The electric motor 40 rotates the fan 30 via the rotation shaft 41. The electric motor 40 is disposed on the other side in the axial direction of the rotating shaft 41 with respect to the fan 30. As the electric motor 40, a DC motor or an AC synchronous motor can be used.

  The motor drive circuit 50 outputs electric power for rotating the electric motor 40 to the electric motor 40. The motor control circuit 60 performs wired communication with the induction heating control circuit 80 and executes control processing for controlling the motor drive circuit 50 based on the detection value of the temperature sensor 61. The temperature sensor 61 is disposed around the fan 30 and detects the ambient temperature of the fan 30.

  The induction heating drive circuit 70 outputs AC power having a predetermined frequency (for example, 25 kHz) to the induction heating coil 100. The induction heating coil 100 is disposed on the other axial side (lower side in FIG. 1) via a predetermined gap with respect to the outer peripheral side 32 b of the main plate 32 of the fan 30. The induction heating coil 100 is disposed along the outer peripheral side 32 b of the main plate 32 of the fan 30. That is, the induction heating coil 100 is disposed on the opposite side of the plurality of blades 31 with respect to the main plate 32 of the fan 30. The induction heating coil 100 induction heats the main plate 32 of the fan 30.

  The induction heating control circuit 80 performs wired communication with the motor control circuit 60 and executes control processing for controlling the induction heating drive circuit 70.

  The motor control circuit 60 may incorporate a microcomputer and execute control processing by executing a computer program, or may execute control processing by a hardware configuration. Similarly, the induction heating control circuit 80 may incorporate a microcomputer to perform control processing by executing a computer program, or may perform control processing by a hardware configuration.

  Next, the action | operation of the air blower 1 with a deodorizing function of this embodiment is demonstrated with reference to FIGS.

  FIG. 2 is a flowchart showing control processing of the motor control circuit 60 and the induction heating control circuit 80.

  First, in step 100, the motor control circuit 60 rotates the fan 30 in a state where the induction heating of the main plate 32 of the fan 30 by the induction heating coil 100 is stopped, and the odor component is added to the catalyst layer for each blade 31. Carry out odor adsorption treatment.

  Specifically, the motor control circuit 60 controls the motor drive circuit 50 so as to rotate the electric motor 40 over a certain period. At this time, the motor control circuit 60 controls the motor drive circuit 50 so as to pulsate the rotational speed of the rotary shaft 41 of the electric motor 40. For this reason, the rotation speed of the rotating shaft 41 of the electric motor 40 fluctuates periodically. Thereby, when the fan 30 rotates, the rotation speed of the fan 30 fluctuates periodically (see FIG. 4A).

  At this time, an air flow is generated from the outside of the case 20 to the inside of the case 20 through the air suction port 21 and flowing to the other side in the axial direction with respect to the fan 30. This air flow flows between two adjacent blades 31 among the plurality of blades 31, and the inflowed air is blown out radially outward. The outer side in the radial direction is the outer side in the radial direction that is the center of the rotation shaft 41. Thus, the air flow blown out from the fan 30 is collected in the case 20 and blown out from the air exhaust port 22 to the outside of the case 20.

  At this time, due to a periodic change in the rotational speed of the fan 30, a spiral air flow is generated between two adjacent blades of the plurality of blades 31 in the fan 30. As a result, the air flow repeatedly contacts the catalyst layer of each blade 31 inside the case 20, and the amount of adsorption of the odorous component adsorbed on the catalyst layer increases. Thereafter, the motor control circuit 60 controls the motor drive circuit 50 to stop the rotation of the electric motor 40.

  In the odor adsorption process, the induction heating control circuit 80 controls the induction heating drive circuit 70 to stop the output of AC power from the induction heating drive circuit 70 to the induction heating coil 100 (FIG. 4 (b)).

  Next, in step 110, the motor control circuit 60 and the induction heating control circuit 80 perform a heating process for heating the catalyst layer for each blade 31 in order to decompose the odor component.

  Specifically, the motor control circuit 60 detects the detected value of the temperature sensor 81 as the ambient temperature of the fan 30 (step 200). In addition, the motor control circuit 60 determines the timing tm at which the rotation of the electric motor 40 should be started after the induction heating of the fan 30 based on the ambient temperature of the fan 30 (step 210).

  Here, the timing tm is a timing (estimated when the temperature of the catalyst layer for each blade 31 reaches the temperature required for decomposition of the odorous component (hereinafter referred to as decomposition required temperature Ta) after induction heating of the fan 30 ( FIG. 5C). The ambient temperature of the fan 30 and the timing tm are in a relationship specified on a one-to-one basis. The relationship between the ambient temperature of the fan 30 and the timing tm is stored in advance in a memory constituting the motor control circuit 60.

  When the motor control circuit 60 determines the timing tm in this way, the motor control circuit 60 instructs the induction heating control circuit 80 to start induction heating. Along with this, the induction heating control circuit 80 instructs the induction heating drive circuit 70 to start induction heating. Then, the induction heating drive circuit 70 outputs AC power having a predetermined frequency to the induction heating coil 100. Accordingly, magnetic field lines are generated from the induction heating coil 100 (see FIG. 5B). Thereby, an eddy current is generated in the main plate 32 of the fan 30. For this reason, the main plate 32 is heated by the eddy current and the electric resistance value of the main plate 32. As a result, the induction heating coil 100 induction-heats the main plate 32 of the fan 30. Along with this, heat from the main plate 32 is transmitted to the catalyst layer for each blade 31 through the plurality of blades 31, and the temperature of the catalyst layer for each blade 31 rises. For this reason, heating of the catalyst layer for each blade 31 is started in a state where the rotation speed of the fan 30 is stopped. Therefore, the catalyst layer for each blade 31 is activated, and decomposition of the odorous component is started in the catalyst layer.

  When the induction heating coil 100 starts induction heating of the main plate 32 of the fan 30 and the predetermined time ts has passed and the timing tm is reached, the motor control circuit 60 sets the catalyst layer for each blade 31. It is determined that the temperature has reached the decomposition required temperature Ta. Accordingly, the motor control circuit 60 controls the motor drive circuit 50 to rotate the electric motor 40 at the rotation speed Na.

  Accordingly, the motor drive circuit 50 rotates the electric motor 40 at the rotation speed Na (step 240). For this reason, the fan 30 rotates with the fixed rotation speed Na. Therefore, heat is dissipated from the catalyst layer for each blade 31 to the air flow flowing between two adjacent blades 31 among the plurality of blades 31. For this reason, the temperature of the catalyst layer for each blade 31 is maintained at a constant required decomposition temperature Ta.

  Here, the induction heating coil 100 induction-heats the outer peripheral side 32 b of the main plate 32 of the fan 30. For this reason, if the rotation of the fan 30 stops, the temperature on the main plate 32 side (that is, the other side in the axial direction) of the plurality of blades 31 is opposite to the main plate 32 of the plurality of blades 31 ( That is, the temperature is higher than the temperature on one side in the axial direction.

  On the other hand, in the present embodiment, the fan 30 rotates at a constant rotation speed Na, so that the air flow sucked through the air suction port 21 flows radially outward along the outer peripheral side 32b of the main plate 32. For this reason, much heat is radiated from the outer peripheral side 32 b side of the main plate 32 in the fan 30. For this reason, generation | occurrence | production of the temperature nonuniformity in the several blade 31 is suppressed, and the temperature of the catalyst layer for every blade 31 is equalized. Therefore, the odor component is decomposed uniformly throughout the entire catalyst layer of each blade 31.

  Thereafter, the induction heating control circuit 80 instructs the induction heating drive circuit 70 to stop the induction heating. For this reason, the induction heating drive circuit 70 stops the output of AC power to the induction heating coil 100.

  Next, in step 120, the motor control circuit 60 discharges the odor component decomposed by the catalyst layer from the case 20, and performs a catalyst cooling / exhaust process for cooling the catalyst layer for each blade 31.

  Specifically, the motor control circuit 60 controls the motor drive circuit 50 so as to rotate the electric motor 40 at the rotation speed Nb. Therefore, the motor drive circuit 50 rotates the electric motor 40 at the rotation speed Nb. For this reason, the fan 30 rotates at the rotation speed Nb. The rotation speed Nb is set to be higher than the rotation speed Na. For this reason, the rotation speed of the electric motor 40 and by extension, the fan 30 becomes high compared with the time of execution of heat processing.

  At this time, an air flow that flows between the plurality of blades 31 of the fan 30 in the case 20 from the outside of the case 20 via the air suction port 21 is generated. This air flow is blown radially outward from between two adjacent blades 31 of the plurality of blades 31. Thus, the air flow blown out from the fan 30 is collected in the case 20 and blown out from the air exhaust port 22 to the outside of the case 20. For this reason, the catalyst layer for each blade 31 is cooled by the air flow. In addition, the odor component decomposed by the catalyst layer is discharged from the air exhaust port 22 of the case 20 together with the air flow.

  According to the embodiment described above, the blower 1 with the deodorizing function includes the fan 30 including the plurality of blades 31 arranged in the circumferential direction around the rotation shaft 41, and the fan via the rotation shaft 41. And an electric motor 40 that rotates 30 to generate an air flow. The catalyst layer is made of a catalyst such as palladium, and is formed in a film shape on each blade surface of the plurality of blades 31 to adsorb and decompose odorous components. The induction heating coil 100 turns the fan 30 into induction heating. By heating the catalyst layer for each blade 31 by induction heating by the induction heating coil 100, the odor component adsorbed on the catalyst layer for each blade 31 is decomposed.

  As described above, the catalyst layer is formed in a film shape on the front and back surfaces of each of the plurality of blades. In addition to this, the fan 30 is heated by induction heating using the induction heating coil 100. For this reason, it is not necessary to provide a space for housing the catalyst layer and the catalyst heating heater. Therefore, the blower 1 with a deodorizing function which aimed at size reduction of a physique can be provided.

  In the fan 30 of the present embodiment, the plurality of blades 31 and the main plate 32 are made of a metal material having thermal conductivity and conductivity. For this reason, heat can be transferred from the main plate 32 to the catalyst layer for each blade 31 through the plurality of blades 31 in a short time. Therefore, the temperature of the catalyst layer for each blade 31 can be raised in a short time.

  In the present embodiment, the induction heating coil 100 is disposed on the other axial side of the main plate 32 of the fan 30 with respect to the outer peripheral side 32b. For this reason, regardless of the rotation of the fan 30, the distance between the induction heating coil 100 and the outer peripheral side 32b of the main plate 32 of the fan 30 can be maintained. Thereby, even if the fan 30 rotates, the main plate 32 of the fan 30 can be reliably induction-heated by the induction heating coil 100.

  In the present embodiment, as the plurality of blades 31, the surface and the back surface of each blade are roughened. The catalyst layer is formed on the front and back surfaces of the plurality of blades 31. For this reason, as a catalyst layer, several unevenness | corrugations are formed and the area which contacts an airflow can be enlarged. Therefore, the performance of adsorbing odorous components can be improved as the catalyst layer.

  In the present embodiment, the motor control circuit 60 periodically changes the rotational speed of the fan 30 when performing the odor adsorption process. For this reason, a spiral airflow is generated between two adjacent blades of the plurality of blades 31. As a result, the spiral air flow repeatedly touches the catalyst layer of each blade 31. Therefore, the adsorption amount of the odor component adsorbed on the catalyst layer can be increased.

  In the present embodiment, when the catalyst layer for each blade 31 is heated by induction heating by the induction heating coil 100, the motor control circuit 60 controls the motor drive circuit 50 to rotate the fan 30 by the electric motor 40 at a constant rotation Ta. Rotate with For this reason, the temperature of the catalyst layer for each blade 31 can be made uniform while maintaining the temperature of the catalyst layer for each blade 31 at the decomposition required temperature Ta. Therefore, the catalyst layer for each blade 31 can decompose the odor component satisfactorily.

  In the present embodiment, when the heat treatment is performed, the induction heating coil 100 starts induction heating of the main plate 32 of the fan 30 with the fan 30 stopped. For this reason, the temperature of the catalyst layer for each blade 31 can be raised in a short period of time.

  Next, the experimental result of the fan 30 of the blower 1 with a deodorizing function of this embodiment is shown in FIGS.

  FIG. 7 shows the surface temperature of the fan 30 when the fan 30 is induction-heated with the alternating-current power output from the induction heating drive circuit 70 to the induction heating coil 100 being 190 W with the rotation of the fan 30 stopped. The measured value is shown. According to FIG. 7, it takes about 200 seconds for the surface temperature of the fan 30 to reach 200 degrees which is the decomposition required temperature Ta after starting the induction heating when the surface temperature of the fan 30 is about 25 degrees. Is shown.

  FIG. 8 shows the surface temperature of the fan 30 when the fan 30 is cooled by rotating the fan 30 at 200 rpm with the output of AC power from the induction heating drive circuit 70 to the induction heating coil 100 stopped. The measured value is shown.

  FIG. 8 shows that it takes about 90 seconds for the surface temperature of the fan 30 to reach 25 degrees after the cooling of the fan 30 is started when the surface temperature of the fan 30 is about 200 degrees. .

(Second Embodiment)
In the second embodiment, an example in which a sub wing 31a is provided for each blade 31 in the blower 1 with the deodorizing function of the first embodiment will be described.

  FIG. 9 shows the overall configuration of the blower 1 with a deodorizing function of the present embodiment. 9, the same as FIG. 1 shows the same thing, The description is abbreviate | omitted.

  In the blower 1 with a deodorizing function of the present embodiment, the sub wing 31 a is provided for each wing 31 on the front and back surfaces of the wing 31. The sub wing 31a is formed in a thin plate shape so as to protrude from the front surface and the back surface. Similar to the blade 31, a catalyst layer is formed on the front and back surfaces of the sub blade 31 a. In the present embodiment, the sub wing 31 a is provided so as to be orthogonal to the front and back surfaces of the wing 31.

  In the present embodiment, the sub wing 31 a is formed of a metal material having both thermal conductivity and conductivity, like the wing 31. As the sub wing 31a, the surface and the back surface are subjected to rough surface processing.

  According to this embodiment described above, the sub wing 31a is provided for each blade 31 in the fan 30 of the blower 1 with the deodorizing function. Similar to the blade 31, a catalyst layer is formed on the front and back surfaces of the sub blade 31 a. For this reason, the catalyst layer which contacts an airflow can be increased. For this reason, the amount of decomposition | disassembly of an odor component can be increased in a catalyst layer.

(Third embodiment)
In the said 1st, 2nd embodiment, although the example which has arrange | positioned the induction heating coil 100 along the outer peripheral side 32b of the main plate 32 of the fan 30 was demonstrated, it replaced with this, and in this 3rd Embodiment, As shown in FIG. 10, the induction heating coil 100 is disposed in the recesses 32 c and 32 d of the main plate 32.

  The recesses 32c and 32d of the main plate 32 are formed so as to be recessed from the other axial side of the rotating shaft 41 to one side. The recesses 32c and 32d are each formed in an annular shape with the rotation shaft 41 as the center. The recess 32c is disposed on the radially outer side with respect to the recess 32d. The outer side in the radial direction is the outer side in the radial direction around the rotation shaft 41.

(Other embodiments)
In the first to third embodiments, the example in which the centrifugal fan is used as the fan 30 of the present invention has been described. Instead, various fans such as an axial fan, a mixed flow fan, and a cross flow fan are used. It may be used.

  In the first to third embodiments, the example in which the main plate 32 of the fan 30 is induction-heated by the induction heating coil 100 has been described. However, instead of this, a plurality of blades 31 or the ring member 33 is provided. Induction heating may be performed by the induction heating coil 100.

  In the first to third embodiments described above, the example in which the plurality of blades 31 are made of a metal material having both thermal conductivity and conductivity has been described. Instead, the material forming the plurality of blades 31 is used. As long as it has thermal conductivity, it is not always necessary to have conductivity.

  In the first to third embodiments, the example in which the catalyst layer is provided on each of the plurality of blades 31 has been described. However, the catalyst layer may be provided on one or more blades 31 among the plurality of blades 31. The catalyst layer need not be provided on all of the plurality of blades 31.

  In the first to third embodiments, the example in which the catalyst layers are provided on the front and back surfaces of the plurality of blades 31 has been described, but instead of this, one of the front and back surfaces of the plurality of blades 31 is provided. A catalyst layer may be provided.

  In the first to third embodiments, when the timing tm is reached after the induction heating coil 100 starts the induction heating, the motor control circuit 60 determines that the temperature of the catalyst layer for each blade 31 is the decomposition required temperature. Although an example in which it has been determined that Ta has been reached has been described, the following may be used instead.

  That is, the temperature of the catalyst layer for each blade 31 is estimated from the ambient temperature of the fan 30 as the detected value of the temperature sensor 61, and the temperature of the catalyst layer for each blade 31 is calculated based on the estimated temperature. It may be determined whether it has been determined that Ta has been reached.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like.

  Next, the relationship between the present embodiment and the claims will be described.

  Step 100 corresponds to the adsorption means, step 110 corresponds to the heating means, and step 120 corresponds to the cooling discharge means.

1 Blower with Deodorizing Function 20 Case 30 Fan 31 Wing 32 Main Plate (Support Member)
DESCRIPTION OF SYMBOLS 40 Electric motor 41 Rotating shaft 50 Motor drive circuit 60 Motor control circuit 70 Induction heating drive circuit 80 Induction heating control circuit 100 Induction heating coil

Claims (10)

A fan (30) that includes a plurality of blades (31) supported by a rotating shaft (41), and generates an air flow in accordance with the rotation of the rotating shaft;
An electric motor (40) for rotating the fan via the rotating shaft;
A catalyst layer formed of a catalyst that adsorbs and decomposes odorous components formed in a film shape on each blade surface of the plurality of blades;
An induction heating coil (100) for inductively heating the fan,
By heating the catalyst layer for each blade by induction heating with the induction heating coil, the odor component adsorbed on the catalyst layer for each blade is decomposed ,
The fan is made of a material having thermal conductivity and conductivity,
The plurality of blades are arranged in a circumferential direction around the rotation axis,
The fan includes a support member (32) that supports the plurality of blades from the other side in the axial direction of the rotation shaft,
The induction heating coil generates heat in the support member by induction heating the support member,
When heat is transferred from the support member to the catalyst layer for each blade through the plurality of blades, the catalyst layer for each blade decomposes the adsorbed odor component,
The induction heating coil is disposed on the opposite side of the plurality of blades with respect to the support member,
The support member is provided with a recess (32c, 32d) that is recessed on one side in the axial direction of the rotating shaft,
The blower with a deodorizing function , wherein the induction heating coil is disposed in the recess . The blower with a deodorizing function according to claim 1, wherein the recess is formed in an annular shape centering on the rotating shaft . The blade surfaces of at least one or more of the plurality of blades are each roughened.
The blower with a deodorizing function according to claim 1 or 2 , wherein the catalyst layer is configured such that the catalyst is attached to a blade surface of the roughened blade. At least one wing of the plurality of wings is provided with a sub wing (31a) formed so as to protrude from the one or more wings,
The blower with a deodorizing function according to any one of claims 1 to 3, wherein the catalyst layer is also formed on the auxiliary blade. A case (20) including an air inlet (21) that houses the fan and sucks air as the fan rotates and an air outlet (22) that is blown out of the fan is provided. The blower with a deodorizing function according to any one of claims 1 to 4 . A control circuit for controlling the blower with a deodorizing function according to claim 5 ,
Adsorbing means (S100) for adsorbing odorous components to the catalyst layer in a state where the induction heating to the fan is stopped;
Heating means (S110) for decomposing the odor adsorbed to the catalyst layer for each blade by heating the catalyst layer for each blade by induction heating by the induction heating coil;
Cooling and discharging means (S120) for rotating the fan via the rotating shaft by the electric motor in order to cool the catalyst layer for each blade and discharge the decomposed odor component from the case; A control circuit comprising: The suction means, to claim 6, wherein the controller controls the electric motor to vary the rotational speed periodically of the fan to generate an air flow vortex between said plurality of vanes The control circuit described. Said heating means according to claim 6, characterized in that rotating when heating the catalyst layer of each of the blades by induction heating by the induction heating coil, the fan via the rotary shaft by the electric motor Or the control circuit according to 7 ; The heating means starts rotation of the fan by the electric motor when it is determined by induction heating by the induction heating coil that the temperature of the catalyst layer for each blade is equal to or higher than a predetermined temperature. The control circuit according to any one of claims 6 to 8 . The control circuit according to any one of claims 6 to 9 , wherein the cooling and discharging unit increases the rotational speed of the fan as compared with the heating unit.

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