JP2014049478A - Heat dissipation structure, and air processing device with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat dissipation structure capable of suppressing reduction of heat dissipation efficiency caused by aging, by preventing fin pitch distortion and improving adhesion between a fin and a heater.SOLUTION: A heat dissipation structure comprises: a plurality of pairs of heat dissipating fins in each of which a notched part including a portion similar to an outer edge shape of a cross section orthogonal to an axial line of a stick-like heating element is provided in one end of a plate part, and each of which is formed from an elastic plate body; a protrusion which is erected substantially vertically to the plate part along an edge of the notched part and has an inner edge shape similar to the notched part; and a pair of fin supports mounted to the heating element for supporting the plurality of pairs of heat dissipation fins. Inner edges of the notched part and the protrusion of the heat dissipation fin are abutted to the heating element. The paired heat dissipation fins are disposed symmetrically with respect to the axial line of the heating element and alternately along an axial line direction of the heating element. Distal ends of the protrusions of the neighboring heat dissipation fins are abutted at other end sides of the heat dissipation fins. The pair of fin supports hold the heat dissipation fins while elastically deforming them.

Description

  The present invention relates to a heat dissipation structure and an air treatment apparatus including the heat dissipation structure.

  Conventionally, each plate fin is arranged in a state where a plurality of pairs of plate fins are arranged at predetermined intervals in the axial direction of the heat transfer tube by sandwiching the outer peripheral surface of the heat transfer tube with a pair of opposing plate fins. A step of contacting the heat transfer tube and pressurizing the heat transfer tube above a certain pressure; a step of rotating and driving the heat transfer tube to generate frictional heat on the contact surface between the plate-like fin and the heat transfer tube; The rotation drive of the heat transfer tube is stopped and at the same time the plate fins are pressed against the heat transfer tube during inertial rotation of the heat transfer tube, and a high upset pressure is applied to brake the rotation of the heat transfer tube and There is known a manufacturing method of a fin tube including a step of bringing a fin and a contact surface of a heat transfer tube into close contact with each other (see, for example, Patent Document 1).

  In addition, a plurality of heater units in which a radiator is brought into contact with a heater core having an electrode plate fixed to both main planes of a positive temperature coefficient thermistor with an adhesive are stacked and housed in a frame body together with a leaf spring. In the past, there has also been known one in which the above is pressed (see, for example, Patent Document 2).

  And in a heat exchanger comprising a plurality of plate-like fins arranged at an appropriate pitch, and a flat heat-exchange tube penetrating through insertion holes provided in these plate-like fins, The relation between the thickness (H) and the pitch (P) of the plate-like fins is P <H <2 × P, and one length of the upright piece cut and raised from the opposite long side of the opening edge of the insertion hole ( It is also known in the art that L) is at least equal to or greater than the pitch (P) of the plate-like fins, and this upright piece is brought into uniform contact with the flat heat exchange tube (see, for example, Patent Document 3).

JP 2011-104611 A JP 09-295881 A JP-A-10-078296

  In the air treatment device, there are cases where a heat radiation fin having a catalyst layer formed on the surface thereof is brought into close contact with a rod-shaped heater, and the heat radiation fin is heated by the heater to activate the catalyst. At this time, in order to efficiently activate the catalyst, a heat dissipating structure that can efficiently heat the heat dissipating fins with a heater is required.

  However, in the past, due to the difference in expansion coefficient between the radiating fin and the heater, the contact state between the fin and the heater changes as the heating and cooling by the heater are repeated over time, and the adhesion between the radiating fin and the heater decreases. As a result, there is a problem in that the heat dissipation efficiency is lowered.

  In the prior art shown in the above-mentioned patent documents, the heat radiation fin is pressed against the heater, or the standing piece provided in the insertion hole of the plate-like fin is brought into uniform contact with the heat exchange pipe, It is intended to improve the adhesion to the heater and the thermal conductivity.

  However, in the prior art disclosed in these patent documents, if the fin pitch is deviated by pressing the radiating fin against the heater, there is a problem, or the upright piece provided in the insertion hole of the fin is uniform on the heater. There is a problem that it is not possible to prevent a decrease in the degree of adhesion between the fin and the heater and the heat radiation efficiency due to aging as described above.

  The present invention has been made to solve such a problem, and it is possible to improve the adhesion between the fin and the heater while preventing the fin pitch from being deviated, and to suppress the deterioration of the heat radiation efficiency due to aging. A structure and an air treatment apparatus including the structure are obtained.

  In the heat dissipation structure according to the present invention, a bar-like heating element and a notched part having the same shape as the outer edge shape of the cut surface perpendicular to the axis of the heating element are provided at one end of the flat plate part, and have a plate shape having elasticity A plurality of pairs of heat radiating fins composed of a body, a projecting portion that is erected substantially perpendicular to the flat plate portion along the periphery of the notch portion, and has an inner edge shape that is the same shape as the notch portion, and is mounted on the heating element A pair of fin supports that support the plurality of pairs of heat radiation fins, wherein the plurality of pairs of heat radiation fins are in a state in which the inner edges of the notches and the protrusions are in contact with the heating element, One and the other of the pair of radiating fins are mounted symmetrically with respect to the axis of the heating element and alternately arranged along the axial direction of the heating element, and are adjacent to the heating element. The tip of the protrusion of the heat radiating fin Aligned in a state where they are in contact with each other, the pair of fin support members are in contact with each other end side of the plurality of pairs of radiating fins and are held in a state where each of the plurality of pairs of radiating fins is elastically deformed. The configuration is as follows.

  Moreover, the air treatment apparatus according to the present invention includes a deodorizing apparatus including the above-described heat dissipation structure and a deodorization catalyst layer formed on the surface of the heat dissipation fin included in the heat dissipation structure.

  In the heat dissipation structure according to the present invention and the air treatment device including the same, the effect of improving the adhesion between the fin and the heater while preventing the fin pitch from being deviated and suppressing the decrease in the heat dissipation efficiency due to aging. Play.

It is sectional drawing of the air processing apparatus which concerns on Embodiment 1 of this invention. It is the figure which looked at the heat reproduction type deodorizing apparatus which concerns on Embodiment 1 of this invention from the front. It is a perspective view of the heat reproduction type deodorizing apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the heat reproduction type deodorizing apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the metal plate which comprises the radiation fin which concerns on Embodiment 1 of this invention. It is a perspective view of the metal plate which comprises the radiation fin which concerns on Embodiment 1 of this invention. It is the figure which looked at the state which mounted | wore the heat generating heater with a pair of radiation fin which concerns on Embodiment 1 of this invention from the front. It is a perspective view of the state of FIG. 7 which concerns on Embodiment 1 of this invention. It is a perspective view of the state of FIG. 7 which concerns on Embodiment 1 of this invention. It is the figure which looked at the state which aligned the several pairs of radiation fin which concerns on Embodiment 1 of this invention, and was mounted | worn with the heat generating heater from the front. It is a perspective view of the state of FIG. 10 which concerns on Embodiment 1 of this invention. It is sectional drawing of the air treatment apparatus in exhaust operation which concerns on Embodiment 1 of this invention. 1 is a cross-sectional view of an air treatment device during a circulation operation according to Embodiment 1 of the present invention. It is a perspective view of the metal plate which comprises the radiation fin which concerns on Embodiment 2 of this invention. It is a perspective view of the metal plate which comprises the radiation fin which concerns on Embodiment 2 of this invention. It is the figure which looked at the state which aligned the several pairs heat radiation fin which concerns on Embodiment 2 of this invention, and was mounted | worn with the heat generating heater from the front. It is a perspective view of the state of FIG. 16 which concerns on Embodiment 2 of this invention. It is a perspective view of the state of FIG. 16 which concerns on Embodiment 2 of this invention. It is the figure which looked at the heating reproduction type deodorizing apparatus which concerns on Embodiment 3 of this invention from the front. It is a perspective view of the heat reproduction type deodorizing apparatus which concerns on Embodiment 3 of this invention. It is a perspective view of the heat reproduction type deodorizing apparatus which concerns on Embodiment 3 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIGS. 1 to 13 relate to Embodiment 1 of the present invention, FIG. 1 is a sectional view of an air treatment device, FIG. 2 is a front view of a heat regeneration type deodorizing device, and FIGS. FIG. 5 and FIG. 6 are perspective views of a metal plate constituting the heat dissipating fins, FIG. 7 is a front view of a state in which a pair of heat dissipating fins are attached to a heat generating heater, FIG. 9 is a perspective view of the state of FIG. 7, FIG. 10 is a front view of a state in which a plurality of pairs of heat dissipating fins are aligned and mounted on a heater, FIG. 11 is a perspective view of the state of FIG. FIG. 13 is a cross-sectional view of the air treatment device during the exhaust operation, and FIG. 13 is a cross-sectional view of the air treatment device during the circulation operation.

  In FIG. 1, reference numeral 1 denotes an air treatment device such as a range hood or an air cleaning device. The air treatment device 1 includes an intake grill 2. The intake grill 2 is provided in a kitchen cooking place where mist such as oil and odor components (hereinafter referred to as odor substances) are generated. The intake grill 2 is provided with an intake port 2a.

  A housing 3 is fixed to the intake grill 2. A blower 4 is accommodated in the housing 3. The blower 4 includes a motor 4a and a fan 4b driven by the motor 4a. The blower destination of the blower 4 is connected to two air passages, an exhaust port 5 leading to the outdoors and a circulation air passage 6 leading to the indoors.

  An air path switching damper 7 is provided at a branch portion between the exhaust port 5 and the circulation air path 6. The air path switching damper 7 is attached to the housing 3. The air path switching damper 7 switches whether the air blown from the blower 4 is exhausted outdoors from the exhaust port 5 or circulated indoors through the circulation air path 6. A heat regeneration deodorizing device 8 is attached in the circulation air passage 6. Operations of the blower 4, the air path switching damper 7, and the heat regeneration deodorizer 8 are controlled by the control unit 9.

  2 to 4 show the configuration of the heat regeneration type deodorizing apparatus 8. The regenerative heating deodorization device 8 includes a heating heater 10, a radiation fin 11, and a fin support 12. The exothermic heater 10 has a rod shape. Here, a specific example will be described assuming that the shape of the heater 10 is a cylindrical shape. The heating heater 10 is a heater unit configured to house a heating element and a control board in a substantially cylindrical outer container 10a. When the control board is energized, the heat generating element generates heat, and the heat of the heat generating element is transmitted to the outer container 10a, so that the heat generating heater 10 as a whole generates heat.

  Here, the heating element incorporated in the heating heater 10 can be specifically configured from, for example, a ceramic heater, tantalum, nichrome, tungsten, or the like, or can be configured from a PTC (Positive Temperature Coefficient) heater.

  In particular, the PTC heater is a semiconductor ceramic mainly composed of barium titanate (BaTiO 3) and has a resistance change characteristic having a positive temperature coefficient. Therefore, when the temperature rises to the Curie temperature Tc, the resistance value increases rapidly. Therefore, if the PTC heater is used, the resistance value increases rapidly at a high temperature and the heater temperature is lowered, so that it is not necessary to control the temperature of the heater.

  Note that a temperature sensor may be attached to a part of the heat regeneration deodorizer 8 and the obtained temperature information may be transmitted to the controller 9. In this case, the controller 9 stops the heating of the heater 10 when the heat regeneration deodorizer 8 reaches a predetermined temperature (for example, 200 ° C.).

  A plurality of pairs of heat dissipating fins 11 are attached to such a rod-like heater 10. One of the pair of radiating fins 11 is the first fin 11a, and the other is the second fin 11b. The first fin 11 a is attached from one side of the heater 10. On the other hand, the second fin 11b is mounted from the other side of the heater 10. The first fin 11 a and the second fin 11 b that form a pair are disposed so as to be symmetrical with respect to the axis of the heater 10.

  Further, a deodorizing catalyst layer (not shown) is formed on the surface of the heat radiation fin 11 (the first fin 11a and the second fin 11b). This deodorization catalyst layer is composed of, for example, manganese oxide, cerium oxide, platinum, silver, palladium, ruthenium, chromium, cobalt, or a compound thereof, and a heat-resistant binder. The deodorizing catalyst adsorbs odorous substances and oxidatively decomposes them. In addition, a deodorizing agent may be formed on the surface of the radiation fin 11, and both a deodorizing catalyst and a deodorizing agent may be formed.

  A plurality of pairs of radiation fins 11 (first fins 11 a and second fins 11 b) attached to the heater 10 are held at predetermined positions by the pair of fin supporters 12. In this way, the heating and regenerating deodorizing device 8 configured by combining the heat generating heater 10, the heat radiating fins 11, and the fin support 12 is in a state where the outside of the fin support 12 is brought into contact with the inner wall of the circulation air passage 6. And is fixed at a predetermined position in the circulation air passage 6.

  The first fin 11 a and the second fin 11 b, which are the heat radiating fins 11, are composed of the same-shaped metal plate 13. The metal plate 13 will be described with reference to FIGS.

  First, the metal plate 13 is a plate-like body made of a metal material having excellent heat conductivity. Specifically, for example, aluminum, copper, an aluminum alloy, a copper alloy, or the like having a normal temperature thermal conductivity of 200 W / m · K or more can be employed as the metal material constituting the metal plate 13. The metal plate 13 is also an elastic body having moderate elasticity.

  And the notch part 13b is formed in the substantially center part of the end of the flat plate part 13a with which the metal plate 13 is provided. The shape of a part of the inner edge of the notch 13b is the same shape as the outer edge shape of the cross section of the outer container 10a on the cut surface perpendicular to the axis of the heater 10. Here, since the outer container 10a is substantially cylindrical, the inner edge shape of the innermost part of the notch 13b is a semicircular shape having the same diameter as the substantially cylindrical shape.

  A protruding portion 13c is erected substantially perpendicular to the flat plate portion 13a along the periphery of the cutout portion 13b. The inner edge shape of the protruding portion 13c is the same as that of the notched portion 13b. Therefore, the inner edge surface of the flat plate portion 13a and the inner edge surface of the protruding portion 13c are smoothly continuous.

The other end side of the flat plate portion 13a (that is, the side opposite to the notch portion 13b when viewed from the flat plate portion 13a) is bent at a substantially right angle with respect to the flat plate portion 13a to form a first bent portion 13d. Both the protruding portion 13c and the first bent portion 13d are portions arranged substantially perpendicular to the flat plate portion 13a. At this time, the protruding portion 13c and the first bent portion 13d may protrude in the same direction with respect to the flat plate portion 13a, or may protrude in opposite directions. What is shown here is an example in which the protruding portion 13c and the first bent portion 13d protrude in opposite directions with respect to the flat plate portion 13a.
As described above, a deodorizing catalyst layer is formed on the surface of the metal plate 13.

  A method of attaching such a metal plate 13 to the heater 10 as the heat radiating fins 11 (first fins 11a and second fins 11b) will be described with reference to FIGS. The first fin 11 a and the second fin 11 b are attached to the heat generating heater 10 with the notch 13 b of the metal plate 13 in contact with the outer periphery of the outer container 10 a of the heat generating heater 10.

  The paired first fin 11 a and second fin 11 b are arranged symmetrically with respect to the axis of the heater 10. At this time, the heater 10 is inserted through the notches 13b of both the first fin 11a and the second fin 11b. For this reason, when viewed from the axial direction of the heater 10, the cutout portion 13b side of the first fin 11a and the cutout portion 13b side of the second fin 11b are overlaid.

  In the portion where the first fin 11a and the second fin 11b are overlapped on the side of the heater 10, the surfaces on the side where the protruding portion 13c of the first fin 11a and the second fin 11b is not provided. The direction in which the first fin 11a and the second fin 11b are attached to the heater 10 is determined so that they contact each other. Accordingly, the protruding portions 13c of the first fin 11a and the second fin 11b that are paired face each other.

  10 and 11 show a state in which a plurality of pairs of the radiating fins 11 (the first fins 11a and the second fins 11b) attached to the heater 10 are arranged in this manner. As shown in FIGS. 10 and 11, the first fins 11 a and the second fins 11 b are alternately arranged along the axial direction of the heater 10.

  In the state of being arranged in this way, the tips of the first bent portions 13d of a pair of first fins 11a are in contact with the adjacent first fins 11a. Similarly, the tips of the first bent portions 13d of a pair of second fins 11b are in contact with the adjacent second fins 11b.

  Further, the tips of the protruding portions 13c of a pair of first fins 11a are in contact with the tips of the protruding portions 13c of the adjacent second fin 11b. In other words, the tips of the protrusions 13c of a pair of second fins 11b are in contact with the tips of the protrusions 13c of the adjacent first fin 11a. In other words, the tips of the protruding portions 13c of the radiating fins 11 adjacent to each other are in contact with each other.

  The dimension along the direction perpendicular to the flat plate portion 13a of the first bent portion 13d defines the interval between the first fins 11a (fin pitch) and the interval between the second fins 11b (fin pitch). Yes. That is, the dimension along the direction perpendicular to the flat plate portion 13a of the first bent portion 13d is equal to the fin pitch.

  At the same time, the dimension of the protruding portion 13c along the direction perpendicular to the flat plate portion 13a also defines the interval between the first fins 11a and the interval between the second fins 11b. In this case, the thickness obtained by adding the thickness dimension of the radiating fin 11 to twice the dimension along the direction perpendicular to the flat plate portion 13a of the protruding portion 13c is equal to the fin pitch.

  Therefore, assuming that the thickness dimension of the radiating fin 11 is known, from the same fin pitch value, the dimension along the direction perpendicular to the flat plate portion 13a of the first bent portion 13d and the flat plate portion 13a of the protruding portion 13c By defining the dimensions along the vertical direction, when a plurality of pairs of heat radiation fins 11 are arranged as shown in FIGS. 10 and 11, the first fins 11a and the second fins 11b are defined as fins. The pitch can be aligned in parallel, and the manufacturability can be improved.

  Further, the inner peripheral surfaces of both the cutout portion 13 b and the protruding portion 13 c of the heat radiating fin 11 come into contact with the outer peripheral surface of the heater 10. For this reason, since the contact area in the connection part of the heat generating heater 10 and the radiation fin 11 can be enlarged, the amount of heat transfer from the heat generating heater 10 to the radiation fin 11 can be increased, and the heat radiation efficiency can be increased. Here, the heat radiation efficiency is the ratio of the amount of heat released from the heat radiation fins 11 to the amount of heat generated by the heater 10.

  As shown in FIGS. 10 and 11, the plurality of pairs of heat dissipating fins 11 (first fins 11 a and second fins 11 b) arranged in the state where the first heater 11 is attached to the heater 10. The fin support 12 is brought into contact with each of the bent portion 13d and the first bent portion 13d of the second fin 11b. Then, by applying a force toward the heat generating heater 10 with respect to the heat radiating fin 11 via the fin support 12, the heat radiating fin 11 is elastically deformed and curved as shown in FIGS.

  The pair of fin supporters 12 hold each of the plurality of pairs of heat radiation fins 11 in an elastically deformed state. In other words, each of the plurality of pairs of radiating fins 11 is attached to the heater 10 while being curved in the elastic region. Therefore, a restoring force that attempts to restore the heat radiation fin 11 to its original shape is generated according to the degree of elastic deformation.

  As described above, one and the other (that is, the first fin 11 a and the second fin 11 b) of the pair of radiating fins 11 are arranged symmetrically with respect to the axis of the heater 10. Therefore, the radiation fin 11 is pressed against the heat generating heater 10 by the restoring force of the heat radiation fin 11, and the heat radiation fin 11 and the heat generating heater 10 can be kept in close contact with each other. In addition, the restoring force of the radiating fin 11 also acts as a force for fixing the heating / regenerating deodorizing device 8 to a predetermined position in the circulation air passage 6 via the fin support 12.

  For example, by inserting an elastic body such as a spring between the fin support 12 and the inner wall of the circulation air path 6, a load is always applied from the fin support 12 to the radiation fin 11. May be.

  With reference to FIG. 12 and FIG. 13, the operation of the air treatment device 1 provided with the heating regenerative deodorizing device 8 having the heat radiation structure composed of the heat heater 10, the heat radiation fins 11 and the fin support 12 as described above. While explaining.

  First, an exhaust operation for exhausting indoor air to the outside will be described. In this exhaust operation, the air path switching damper 7 is switched so that the air blowing destination of the blower 4 leads to the exhaust port 5. By operating the blower 4 in this state, indoor air is sucked from the air inlet 2a provided in the air intake grill 2. Then, the indoor air that has been taken in is exhausted from the air path switching damper 7 to the outside through the exhaust port 5 (FIG. 12, arrows in the figure represent the flow of air).

  On the other hand, in the case of using an electromagnetic heating device such as an IH cooking heater or an electric heating device such as a halogen heater for cooking or the like, carbon dioxide is not generated, and therefore it is not always necessary to exhaust the air outdoors. Therefore, in such a case, a circulation operation for circulating air indoors is performed. In this circulation operation, the air path switching damper 7 is switched so that the air blowing destination of the blower 4 leads to the circulation air path 6. When the blower 4 operates in this state, the indoor air sucked into the intake port 2 a provided in the intake grill 2 is sent from the air path switching damper 7 to the circulation air path 6.

  The air sent to the circulation air path 6 passes through the heat regeneration deodorizer 8. At this time, the deodorizing catalyst on the surface of the metal plate 13 of the heat dissipating fin 11 of the heat regeneration type deodorizing device 8 adsorbs the odorous substance in the air and cleans the air. Then, the cleaned air is returned indoors (FIG. 13. Arrows in the figure represent the flow of air).

  Here, when the air circulation time increases, the function of oxidizing the odorous substance by the deodorizing catalyst is weakened, and the adsorption capacity of the odorous substance by the heat radiating fins 11, that is, the adsorption amount per unit time is lowered. Therefore, in order to regenerate the adsorption ability of the odorous substance by the radiating fin 11, a process of removing the odorous substance adsorbed on the radiating fin 11 (hereinafter referred to as a regeneration process) is performed.

  The regeneration process is a process of heating the radiating fins 11 with the heater 10 during outdoor exhaust or when the blower is stopped. At this time, the deodorizing catalyst is heated to, for example, 60 ° C to 300 ° C. When the heat dissipating fin 11 is heated, the action of the deodorizing catalyst is activated, and unreacted odorous substances adhering to the surface of the deodorizing catalyst can be removed. Therefore, the adsorption amount of the odorous substance to the metal plate can be recovered.

  If this regeneration process is repeated at regular intervals, a so-called heat cycle state is obtained. Then, due to the difference in linear expansion coefficient between the heater 10 and the radiating fin 11, for example, the shape of the notch 13 b of the radiating fin 11 is deformed, so that the degree of adhesion between the heater 10 and the radiating fin 11 is reduced or the heat is generated. The contact area between the heater 10 and the radiating fin 11 may decrease. If the degree of adhesion and the contact area between the heater 10 and the radiating fin 11 are reduced, the metal plate cannot be heated sufficiently during the regeneration process.

  For such a problem, the air treatment provided with the heat-dissipating structure composed of the heater 10, the heat-dissipating fins 11 and the fin support 12 and the heat-regenerating deodorizing device 8 having the heat-dissipating structure has been described above. According to the apparatus 1, since the radiation fin 11 is elastically deformed, the force which always presses the radiation fin 11 against the heater 10 is working.

  For this reason, the change in the positional relationship between the heat generating heater 10 and the heat radiating fin 11 can be suppressed in the heat cycle state, and the deformation of the shape at the contact portion between the heat generating heater 10 and the heat radiating fin 11 can be suppressed. Even if the shape of the contact portion between the heat generating heater 10 and the heat radiating fin 11 is slightly changed, the heat radiating fin 11 is pressed against the heat generating heater 10 by the elastic force of the heat radiating fin 11. 11 and the contact area and the contact area can be maintained.

  Therefore, even during the regeneration process after performing the regeneration process many times, the amount of heat transfer from the heater 10 to the radiating fin 11 does not decrease, and a decrease in heat dissipation efficiency over time can be suppressed.

Embodiment 2. FIG.
FIGS. 14 to 18 relate to the second embodiment of the present invention. FIGS. 14 and 15 are perspective views of a metal plate constituting the radiating fins, and FIG. 16 is a heating heater by arranging a plurality of pairs of radiating fins. FIG. 17 and FIG. 18 are perspective views of the state shown in FIG.
In the second embodiment described here, a bent portion is provided also on the notch portion side of the metal plate constituting the radiation fin in the configuration of the first embodiment described above.

  14 and 15 show the shape of the metal plate 13 constituting the heat radiation fin 11 in this embodiment. When viewed from the flat plate portion 13a of the metal plate 13, an end portion on the same side as the side on which the notch portion 13b and the protruding portion 13c are provided is bent at a substantially right angle with respect to the flat plate portion 13a to be a second bent portion. 13e is formed. In addition, this 2nd bending part 13e is provided avoiding the part in which the notch part 13b was provided.

  At this time, the second bent portion 13e is provided so as to protrude on the same side as the side on which the protruding portion 13c protrudes with respect to the flat plate portion 13a. Moreover, the 2nd bending part 13e is provided so that it may protrude in the opposite side to the side from which the 1st bending part 13d protrudes with respect to the flat plate part 13a. Accordingly, the first bent portion 13d and the protruding portion 13c protrude in opposite directions with respect to the flat plate portion 13a.

  A state in which a plurality of pairs of such metal plates 13 as heat radiating fins 11 (first fins 11a and second fins 11b) are aligned and mounted on the heater 10 is shown in FIGS. In this state, the paired first fin 11 a and second fin 11 b are disposed symmetrically with respect to the axis of the heater 10. At the same time, the first fins 11 a and the second fins 11 b are alternately arranged along the axial direction of the heater 10.

  In this state, as in the first embodiment, the tips of the first bent portions 13d of a pair of first fins 11a are in contact with the adjacent first fin 11a. The tips of the first bent portions 13d of a pair of second fins 11b are in contact with the adjacent second fins 11b. In addition, the tips of the protruding portions 13c of the radiating fins 11 adjacent to each other are in contact with each other.

Further, in the second embodiment, the tip of the second bent portion 13e of the first fin 11a abuts on the second fin 11b, and the second bent portion 13e of the second fin 11b. Is in contact with the first fin 11a.
Other configurations are the same as those in the first embodiment, and detailed description thereof is omitted.

  When a plurality of pairs of radiating fins 11 are arranged as shown in FIGS. 16 to 18, not only the first bent portion 13 d and / or the protruding portion 13 c but also the second bent portion 13 e acts. The first fins 11a and the second fins 11b can be aligned in parallel at a prescribed fin pitch, and the productivity can be improved.

Embodiment 3 FIG.
FIGS. 19 to 21 relate to Embodiment 3 of the present invention, FIG. 19 is a front view of the heat regeneration type deodorization device, and FIGS. 20 and 21 are perspective views of the heat regeneration type deodorization device. .

  In the third embodiment described here, in the configuration of the first and second embodiments described above, the first bent portion (opposite to the side mounted on the heat generating heater) of the metal plate constituting the heat radiation fin. The bent portion formed at the end portion on the side is not provided. Instead, the fin support is provided with a serrated projection, and the end of the radiating fin is engaged with the serrated projection to define the interval between the radiating fins. The position which supports a radiation fin with a fin support is kept from shifting | deviating when hold | maintaining in the state made to elastically deform.

  That is, in the third embodiment, in the flat plate portion 13a of the metal plate 13 constituting the first fin 11a and the second fin 11b that are the radiation fins 11, the side opposite to the notch portion 13b when viewed from the flat plate portion 13a. Is a state in which the flat plate portion 13a is extended as it is, and the first bent portion 13d as in the first embodiment or the second embodiment is not formed.

  The fin support 12 is provided with a sawtooth projection 12a. The serrated projections 12 a are provided on the surface of the fin support 12 on the side in contact with the heat radiating fins 11. The serrated projections 12a of the fin support 12 are provided at equal intervals. At this time, the interval between the adjacent serrated protrusions 12 a is equal to the fin pitch of the radiation fins 11.

  The metal plate 13 constituting the first fin 11a and the second fin 11b, which are the heat radiating fins 11, is attached to the heat generating heater 10 with the notch 13b and the protruding portion 13c in contact with the heat generating heater 10. The state in which the fin support 12 is brought into contact with the heat radiation fin 11 from the opposite side of the heat generation heater 10 after the plurality of pairs of heat radiation fins 11 are mounted on the heat generation heater 10 is shown in FIGS.

  Similar to the first embodiment and the second embodiment, the paired first fin 11a and second fin 11b are arranged symmetrically with respect to the axis of the heater 10 and the first fin 11a and The second fins 11 b are alternately arranged along the axial direction of the heater 10.

The fin support 12 is brought into contact with the radiation fin 11 from the opposite side of the heater 10 with the surface provided with the serrated projections 12a facing the radiation fin 11 side. When a force is applied to the heat dissipation fin 11 toward the heat generating heater 10 by the fin support 12, each of the heat dissipation fins 11 is elastically deformed and curved. At this time, the end portions of the respective radiation fins 11 are engaged with the respective serrated projections 12 a of the fin support 12.
Other configurations are the same as those in the first embodiment, and detailed description thereof is omitted.

  In this way, the fin when the radiating fin 11 is held in an elastically deformed state by the fin support 12 by engaging the serrated projection 12a of the fin support 12 with the end of the radiating fin 11. It is possible to prevent the position of the heat dissipating fins 11 relative to the support 12 and to more reliably maintain a state in which the first fins 11a and the second fins 11b are aligned in parallel at a specified fin pitch. .

  Moreover, compared with the case where the 1st bending part 13d is provided in the metal plate 13 which comprises the radiation fin 11, the area of the flat plate part 13a of the metal plate 13 at the time of using the same amount of material is enlarged. Therefore, the heat radiation efficiency can be further improved, and the heat radiation fin 11 can be held in a more curved (elastically deformed) state, so that the restoring force of the heat radiation fin 11 can be increased. Is possible.

DESCRIPTION OF SYMBOLS 1 Air processing apparatus 2 Intake grill 2a Inlet 3 Housing 4 Fan 4a Motor 4b Fan 5 Exhaust 6 Circulating air path 7 Air path switching damper 8 Heat regeneration deodorizer 9 Control part 10 Heating heater 10a Outer container 11 11a 1st fin 11b 2nd fin 12 Fin support 12a Serrated projection part 13 Metal plate 13a Flat plate part 13b Notch part 13c Protrusion part 13d 1st bending part 13e 2nd bending part

Claims (5)

A rod-shaped heating element;
A plurality of pairs of radiating fins made of a plate-like body having a notch portion provided at one end of the flat plate portion and having a portion having the same shape as the outer edge shape of the cut surface perpendicular to the axis of the heating element,
A projecting portion that is erected substantially perpendicularly to the flat plate portion along the periphery of the notch portion, and has an inner edge shape that is the same shape as the notch portion;
A pair of fin supports that support the plurality of pairs of heat dissipating fins mounted on the heating element,
In the plurality of pairs of the heat radiation fins, one and the other of the pair of heat radiation fins are symmetrical with respect to the axis of the heat generating element in a state where the inner edges of the cutout portion and the protruding portion are in contact with the heat generating element. And arranged alternately along the axial direction of the heating element and attached to the heating element, and aligned in a state where the tips of the protruding portions of the adjacent radiating fins are in contact with each other,
A pair of said fin support tools contact | abut in the other end side of each of a plurality of said heat radiating fins, and hold | maintain each of a plurality of said heat radiating fins being elastically deformed, The heat radiating structure characterized by the above-mentioned. A first bent portion provided at the other end of the flat plate portion and bent substantially at a right angle to the flat plate portion;
The plurality of pairs of the heat radiating fins are aligned so that tip portions of the first bent portions of the heat radiating fins are in contact with the adjacent heat radiating fins,
A pair of said fin support tools contact | abut to each said 1st bending part of each of a plurality of said radiating fins, and hold | maintain each of a plurality of said radiating fins being elastically deformed. The heat dissipation structure according to claim 1.   2. The heat dissipation structure according to claim 1, wherein the fin support includes a serrated protrusion that engages with the other end of each of the plurality of pairs of the heat dissipation fins. A second bent portion provided at one end of the flat plate portion and bent at a substantially right angle with the flat plate portion;
The plurality of pairs of the heat radiation fins are aligned so that tip portions of the second bent portions of the heat radiation fins are in contact with the adjacent heat radiation fins. The heat dissipation structure as described in any one of Claims. The heat dissipation structure according to any one of claims 1 to 4,
An air treatment apparatus comprising: a deodorization device having a deodorization catalyst layer formed on a surface of the heat radiation fin of the heat dissipation structure.

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