JP2018153764A - Absorption unit and air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a manufacturing cost of a filter cover.SOLUTION: An absorption unit includes a filter formed in a plate shape, and a cover having a pair of cover members which are arranged on outer circumference part of the filter and are incorporated by sandwiching the filter. Each of the pair of cover members includes an annular part for covering the filter along an outer circumference of the filter, a filter holding part which is formed on the annular part and sandwiches and holds the filter, an engagement part which is formed on an inner circumference surface of the annular part and engages with the pair of cover members, and an opening formed opposite to the engagement part on the filter holding part.SELECTED DRAWING: Figure 21

Description

  The present invention relates to an adsorption unit and an air cleaner.

  Conventionally, there has been known an air purifier that regenerates the deodorizing ability of a deodorizing filter by allowing indoor air to pass through the deodorizing filter to adsorb odor components contained in air to the deodorizing filter and heating the deodorizing filter. Yes. Among such air purifiers, there is known an air purifier in which a plate-like deodorizing filter is rotatably provided and a part of the deodorizing filter is heated by a heat radiating plate.

Japanese Patent Laid-Open No. 2006-49402

  Some deodorizing filters included in the above-described air purifier include an outer peripheral filter cover that covers an outer peripheral portion of the deodorizing filter, and the deodorizing filter is protected. The outer peripheral filter cover is made of a resin material, and has a pair of cover members engaged so as to sandwich the deodorizing filter from both sides in the thickness direction of the deodorizing filter. Each of the pair of cover members includes an annular portion that covers the outer periphery of the deodorizing filter, a pair of rib-shaped filter holding portions that hold the deodorizing filter, and an engaging portion that engages the pair of cover members. And having.

  However, Patent Document 1 does not disclose the position and structure of the engaging portion that engages the cover member. When molding the cover member, depending on the position and structure of the engaging portion, it is necessary to use a molding die having a slide core, which may complicate the structure of the molding die and increase the manufacturing cost of the cover member. There is.

  The disclosed technique has been made in view of the above, and an object thereof is to provide an adsorption unit and an air cleaner that can reduce the manufacturing cost of a filter cover.

  One aspect of the suction unit disclosed in the present application includes a filter formed in a plate shape, a heat radiating plate disposed to face a part of the filter, and heating the heat radiating plate via the heat radiating plate. A cover having a heater that heats a part of the filter, a drive unit that moves the filter with respect to the heat radiating plate, and a set of cover members that are provided on the outer periphery of the filter and combined with the filter interposed therebetween. Each of the pair of cover members includes an annular portion that covers the filter along an outer periphery of the filter, and a filter holder that is formed on an inner peripheral surface of the annular portion and holds the filter therebetween. And an engagement portion that is formed in the annular portion and engages the pair of cover members, and an opening that is formed in the filter holding portion so as to face the engagement portion.

  According to one aspect of the suction unit disclosed in the present application, the manufacturing cost of the filter cover can be reduced.

FIG. 1 is a perspective view illustrating an appearance of an air cleaner according to an embodiment. FIG. 2 is a plan view showing the air cleaner of the embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. 1 showing the air cleaner of the embodiment. FIG. 4 is a cross-sectional view taken along the line BB in FIG. 1 showing the air cleaner of the embodiment. FIG. 5 is a perspective view showing the deodorizing unit of the embodiment. FIG. 6 is an exploded perspective view showing the deodorizing unit of the embodiment. FIG. 7 is a perspective view showing a deodorizing filter portion of the deodorizing unit of the embodiment. FIG. 8 is a cross-sectional view taken along the line CC in FIG. 6 showing the filter regeneration unit of the deodorizing unit of the embodiment. FIG. 9 is an exploded perspective view showing the filter regeneration unit of the deodorizing unit of the embodiment. FIG. 10 is an exploded perspective view showing an outer peripheral filter cover of the deodorizing filter portion of the deodorizing unit of the embodiment. FIG. 11 is a plan view showing a part of the front side cover member of the outer peripheral filter cover in the embodiment. FIG. 12 is an enlarged perspective view showing a part of the front cover member of the outer peripheral filter cover in the embodiment. FIG. 13 is a cross-sectional view taken along the line DD in FIG. 12 showing the front cover member of the outer peripheral filter cover in the embodiment. FIG. 14 is a plan view showing an engaging convex portion and an opening of the front side cover member of the outer peripheral filter cover in the embodiment. FIG. 15 is a plan view illustrating a part of the back side cover member of the outer peripheral filter cover in the embodiment. FIG. 16 is an enlarged perspective view showing a part of the back side cover member of the outer peripheral filter cover in the embodiment. FIG. 17 is an enlarged perspective view showing a part of the back side cover member of the outer peripheral filter cover in the embodiment. FIG. 18 is a cross-sectional view taken along line EE in FIG. 16 showing a back cover member of the outer peripheral filter cover in the example. FIG. 19 is a plan view showing an engagement recess and an opening of the back cover member of the outer peripheral filter cover in the embodiment. FIG. 20 is a perspective view illustrating a state in which the front cover member and the rear case member of the outer peripheral filter cover in the embodiment are assembled. FIG. 21 is a cross-sectional view taken along line FF in FIG. 20 illustrating a state where the front cover member and the rear case member of the outer peripheral filter cover in the embodiment are assembled. FIG. 22 is a plan view showing a modification of the opening of the front cover member of the outer peripheral filter cover in the embodiment. FIG. 23 is a plan view illustrating a modified example of the opening of the back side cover member of the outer peripheral filter cover in the embodiment.

  Hereinafter, embodiments of an adsorption unit and an air cleaner disclosed in the present application will be described in detail with reference to the drawings. In addition, the adsorption | suction unit and air cleaner which this application discloses are not limited by the following examples.

[Configuration of air purifier]
FIG. 1 is a perspective view illustrating an appearance of an air cleaner according to an embodiment. The air cleaner 1 which is one Example is provided with the main body housing | casing 11, the front panel 12, the front panel 13, and the rear panel 14, as shown in FIG. The main body housing 11 is formed of a synthetic resin material and is formed in a substantially rectangular parallelepiped shape. The main body housing 11 includes a top panel 11a, a right panel 11b, a left panel 11c, and a bottom 11d. The bottom part 11d forms the lower part of the main body casing 11, and is placed on the installation surface on which the air purifier 1 is installed. The right side panel 11b and the left side panel 11c are disposed so as to face each other to form a side surface of the main body casing 11, and the lower ends of the right side panel 11b and the left side panel 11c are joined to the bottom portion 11d. The top panel 11a forms the upper part of the main body casing 11, and is joined to the upper end of the right side panel 11b and the upper end of the left side panel 11c. The front panel 12 is disposed on the front surface of the main body housing 11. The front panel 13 is disposed in front of the front panel 12.

  Between the front panel 13 and the front panel 12, an upper surface inlet 13a, a right side inlet 13b, a left side inlet 13c, and a lower inlet 13d are formed. The upper surface suction port 13 a is disposed on the upper side of the front panel 13. The right side suction port 13b is disposed on the right side panel 11b side of the front panel 13. The left side suction port 13 c is disposed on the left side panel 11 c side of the front panel 13. The lower suction port 13d is disposed on the bottom 11d side of the front panel 13.

  The air cleaner 1 further includes an operation unit 15. The operation part 15 is arrange | positioned at the upper surface of the air cleaner 1 so that a part of upper surface inlet 13a may be covered. The operation unit 15 includes a button and a display unit. The buttons include a power button, an operation mode switching button, and the like, and are used when operating the air cleaner 1. The display unit displays the operation state of the air cleaner 1 and the detection result of a detector such as a dust sensor (not shown).

  FIG. 2 is a plan view showing the air cleaner of the embodiment. The rear panel 14 is formed of a synthetic resin material, and is disposed on the back surface opposite to the front surface on which the front panel 12 is disposed, as shown in FIG. An upper air outlet 14a, a right side air outlet 14b, and a left side air outlet 14c are formed between the main housing 11 and the rear panel 14. The upper surface outlet 14 a is disposed on the top panel 11 a side of the rear panel 14. The right side air outlet 14b is disposed on the right side panel 11b side of the rear panel 14. The left side air outlet 14 c is disposed on the left side panel 11 c side of the rear panel 14.

  The air purifier 1 includes air that has been sucked into the main body housing 11 from the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c, and the lower inlet 13d. 14b and the left side air outlet 14c are subjected to air dust removal processing, humidification processing, and deodorization processing before being blown out from each of the left side outlet 14c.

  In FIG. 1 and subsequent figures, the front-rear direction (depth direction) of the air cleaner 1 is indicated as the X direction, the width direction of the air cleaner 1 is indicated as the Y direction, and the height direction of the air cleaner 1 is indicated as the Z direction. In the following description, the side of the main body housing 11 on which the front panel 12 is disposed is referred to as “front side”, and the side of the main body housing 11 on which the rear panel 14 is disposed is referred to as “back side”.

  FIG. 3 is a cross-sectional view taken along line AA in FIG. 1 showing the air cleaner of the embodiment. As shown in FIG. 3, the main body housing 11 has a ventilation path 10 formed therein. The ventilation path 10 communicates the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c, and the lower inlet 13d with the upper side outlet 14a, the right side outlet 14b, and the left side outlet 14c. ing.

  The air cleaner 1 further includes a prefilter 21, a dust collection unit 22, a deodorization unit 23 as an adsorption unit, a humidification unit 24, and a blower 25. The prefilter 21, the dust collection unit 22, the deodorizing unit 23, the humidification unit 24, and the blower 25 are disposed in the ventilation path 10 inside the main body housing 11.

  The prefilter 21 is formed, for example, as a mesh structure in which a thread-like PET (polyethylene terephthalate) material is knitted. The prefilter 21 is disposed on the front side of the ventilation path 10. The pre-filter 21 collects dust contained in the air sucked into the ventilation path 10 inside the main body housing 11 from the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c, and the lower inlet 13d. To do.

  The dust collection unit 22 is disposed on the back side of the pre-filter 21 in the ventilation path 10. The main body casing 11 further includes a partition plate 16. The partition plate 16 is disposed on the back side of the front panel 13 and forms a part of the main body housing 11. The dust collection unit 22 includes a first electric dust collector 22a and a second electric dust collector 22b. The first electric dust collector 22 a and the second electric dust collector 22 b are arranged in the vertical direction and are supported by the partition plate 16. The first electric dust collector 22a and the second electric dust collector 22b each have a housing, a discharge electrode, and a dust collection electrode that are not shown. A discharge electrode and a dust collection electrode are supported inside the housing. The discharge electrode charges fine dust, pollen, and the like that have not been collected by the prefilter 21 by corona discharge. The dust collecting electrode collects dust, pollen and the like charged by the discharge electrode. The dust collection unit 22 is formed by forming the first electric dust collector 22a and the second electric dust collector 22b with a discharge electrode, a dust collection electrode, and a housing, so that, for example, a nonwoven fabric is formed in a pleated shape. Air resistance is smaller than dust collection filter.

  The deodorizing unit 23 is disposed on the back side of the pre-filter 21 in the ventilation path 10. The humidifying unit 24 is disposed on the back side of the deodorizing unit 23 in the ventilation path 10. The humidification unit 24 includes a humidification filter 24a and a water storage tank 24b. Water is stored in the water storage tank 24b. The humidifying filter 24a is formed in a disc shape, and is arranged so that a part of the humidifying filter 24a is immersed in water stored in the water storage tank 24b. Further, the humidifying filter 24a is rotatably supported by a rotating shaft so that a portion immersed in water stored in the water storage tank 24b moves, and is rotated by a motor (not shown). The humidification unit 24 humidifies the air flowing through the ventilation path 10 by passing air through the humidification filter 24a moistened with water stored in the water storage tank 24b.

  The humidification unit 24 is not limited to the above-described configuration. For example, the humidification unit 24 is a water wheel that draws water stored in the water storage tank 24b through a plurality of recesses formed on the outer peripheral side of the humidification filter 24a to wet the humidification filter 24a. May be configured. In this case, the humidifying filter 24a may be provided so as not to be immersed in water stored in the water storage tank 24b. Further, the humidifying filter 24a may be provided so as not to rotate. In this case, the humidification filter 24a may be replaced with another humidification filter that sucks up the water stored in the water storage tank 24b by capillary action.

  The blower 25 is disposed on the back side of the humidifying unit 24 in the ventilation path 10. The blower 25 includes a turbo fan 25a and a fan motor 25b. The fan motor 25b has a variable rotational speed and rotates the turbo fan 25a. The turbo fan 25a is made of a synthetic resin material and is connected to the output shaft of the fan motor 25b. The turbo fan 25a rotates to rotate from the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c, and the lower inlet 13d to the upper surface outlet 14a, the right side outlet 14b, and the left side outlet 14c. Flow air toward That is, the blower 25 takes air into the air cleaner 1 from the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c, and the lower inlet 13d, and passes the air along the ventilation path 10. Let The blower 25 further releases the air that has passed through the ventilation path 10 to the outside of the air cleaner 1 through the upper surface outlet 14a, the right side outlet 14b, and the left side outlet 14c.

  The blower 25 is arranged such that the center height D of the fan motor 25b coincides with the height of the space between the first electric dust collector 22a and the second electric dust collector 22b of the dust collection unit 22. In the vicinity of the center of the fan motor 25b, there is little air flow due to the rotation of the turbo fan 25a, so there is less air flow in the space near the center of the fan motor 25b in the ventilation path 10. The dust collection unit 22 does not allow air to pass between the first electric dust collector 22a and the second electric dust collector 22b. For this reason, the dust collection unit 22 can perform dust removal with high efficiency by arranging the first electric dust collector 22a and the second electric dust collector 22b in a space where there is a large flow of air.

  FIG. 4 is a cross-sectional view taken along the line BB in FIG. 1 illustrating the air cleaner 1 according to the embodiment. As shown in FIG. 4, the pre-filter 21 is formed in an arch shape whose center is convex toward the front side. For this reason, the pre-filter 21 includes the main body casing 11 from the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c, and the lower inlet 13d as compared with the case where the prefilter 21 is formed flat. The area through which each of the air sucked into the air passes through the prefilter 21 is large. As a result, the pre-filter 21 has a larger amount of dust from the air sucked into the main body housing 11 from the upper surface suction port 13a, the right side suction port 13b, the left side suction port 13c, and the lower suction port 13d. It is possible to collect.

[Configuration of deodorizing unit]
FIG. 5 is a perspective view showing the deodorizing unit of the embodiment. As shown in FIG. 5, the deodorizing unit 23 as the adsorption unit of the embodiment includes a deodorizing filter part 23a, a filter regeneration part 23f, and a holding part 23g. The deodorizing filter part 23a is formed in a disk shape. The filter regeneration unit 23f is formed in a substantially triangular prism shape and covers a part of both surfaces in the circumferential direction of the deodorizing filter unit 23a. The holding part 23g is fixed to the main body casing 11, and supports the deodorizing filter part 23a and the filter regeneration part 23f.

  FIG. 6 is an exploded perspective view showing the deodorizing unit 23 of the embodiment. As shown in FIG. 6, the holding part 23g is formed in a substantially square shape by a synthetic resin material, and a circular opening 23gd corresponding to the shape of the deodorizing filter part 23a is formed in the center. Further, the holding portion 23g is located above the opening 23gd (the upper portion when the holding portion 23g is arranged in the ventilation path 10; hereinafter referred to as “above”) according to the shape of the filter regeneration portion 23f. A concave reproduction unit storage unit 23ge is formed.

  Further, the deodorizing unit 23 includes two rollers 23m, a rotation detecting gear 23k, a rotation detecting unit 23r, a driving unit 23h, a driving gear 23j, and four pressing members 23z. Each of the two rollers 23m is formed of a synthetic resin material, and includes a cylindrical portion 23mb, an upper flange 23mc, and a lower flange 23md. The cylinder portion 23mb is formed in a cylindrical shape having a hole 23ma. The upper flange 23mc and the lower flange 23md are each formed in a disk shape having a diameter larger than that of the cylindrical portion 23mb, and project from both ends of the cylindrical portion 23mb to the outer peripheral side. Two first shafts 23ga are formed in the holding portion 23g. The two first shafts 23ga are arranged at both corners below the holding portion 23g (the lower portion when the holding portion 23g is arranged in the ventilation path 10; hereinafter referred to as “downward”). The two first shafts 23ga are respectively inserted into the holes 23ma of the two rollers 23m, thereby rotatably supporting the two rollers 23m.

  The rotation detecting gear 23k is made of a synthetic resin material. The holding portion 23g is further formed with a second shaft 23gb. The second shaft 23gb is disposed on the left side of the regeneration unit storage unit 23ge (left side when the deodorizing filter unit 23a is viewed from the front side). The second shaft 23gb rotatably supports the rotation detection gear 23k by inserting the rotation detection gear 23k. The rotation detector 23r detects the rotation of the rotation detection gear 23k. For example, a photo interrupter is used as the rotation detection unit 23r. The photo interrupter has a light emitting unit and a light receiving unit, and the light emitting unit and the light receiving unit are arranged to face each other with a detection target interposed therebetween. The photo interrupter can detect the presence and position of the detection target by detecting the light emitted from the light emitting unit with the light receiving unit.

  The drive gear 23j is made of a synthetic resin material. The drive unit 23h has, for example, a stepping motor, and a drive gear 23j is attached to the output shaft of the stepping motor. The holding portion 23g is further formed with a driving portion fixing portion 23gc. The drive unit fixing unit 23gc is disposed on the right side (right side when the deodorizing filter unit 23a is viewed from the front side) of the reproduction unit storage unit 23ge and supports the drive unit 23h. The drive unit 23h rotates the drive gear 23j.

  The four pressing members 23z are formed of a synthetic resin material as a substantially pentagonal plate material, and are formed in a shape that can be fitted into the holding portion 23g. The pressing member 23z is fitted into the holding portion 23g after the two rollers 23m, the rotation detecting gear 23k, the driving portion 23h, and the driving gear 23j are attached to the holding portion 23g. The pressing member 23z is fitted into the holding portion 23g, thereby pressing the two rollers 23m, the rotation detecting gear 23k, the driving portion 23h, and the driving gear 23j so as not to be detached from the holding portion 23g. .

  FIG. 7 is a perspective view showing the deodorizing filter portion 23a of the deodorizing unit of the embodiment. As shown in FIG. 7, the deodorizing filter portion 23a includes a deodorizing filter 23aa, an outer peripheral filter cover 23ac, and an inner peripheral filter cover 23ae.

  The deodorizing filter 23aa is formed in a disc shape, and a through hole 23aao is formed at the center. The deodorizing filter 23aa is formed so that air passes in the thickness direction of the deodorizing filter 23aa. The deodorizing filter 23aa adsorbs an odor component from the passing air and decomposes the adsorbed odor component by being heated by a PTC heater 23b described later. For example, the deodorizing filter 23aa includes a base material (not shown) and a catalyst layer formed on the base material. The base material is formed of a plate material such as aluminum and has a porous structure exemplified by a honeycomb structure. The catalyst layer is formed of a catalyst and covers the surface of the substrate. The catalyst adsorbs odorous components from the air flowing in the vicinity of the catalyst layer and is heated to decompose the adsorbed odorous components. The deodorizing filter 23aa is formed in a porous structure, and the filter regeneration unit 23f covers only a part of the deodorizing filter 23aa and does not cover most of the air resistance.

  The outer peripheral filter cover 23ac is generally formed in an annular shape, and is disposed along the outer peripheral portion of the deodorizing filter 23aa. The outer peripheral filter cover 23ac covers the outer peripheral edge of the deodorizing filter 23aa and protects the end surface of the outer peripheral portion of the deodorizing filter 23aa. The inner peripheral filter cover 23ae is formed in a generally annular shape, and is disposed inside the through hole 23aa of the deodorizing filter 23aa, covering the inner peripheral edge of the deodorizing filter 23aa and protecting the end surface of the inner peripheral portion. ing. A through hole 23ad is formed in the inner peripheral filter cover 23ae.

  Moreover, the 1st convex part 23acp which protrudes in the thickness direction of deodorizing filter 23aa is integrally formed in the outer peripheral part filter cover 23ac on both surfaces in the thickness direction (X direction) of deodorizing filter 23aa, respectively. Similarly to the outer peripheral filter cover 23ac, the inner peripheral filter cover 23ae has second convex portions 23aep protruding in the thickness direction of the deodorizing filter 23aa on both surfaces in the thickness direction (X direction) of the deodorizing filter 23aa. It is integrally formed. By these 1st convex part 23acp and 2nd convex part 23aep, the space | interval of the heat sink 23c and the deodorizing filter 23aa is controlled appropriately in the thickness direction of the deodorizing filter 23aa. Details of the configuration of the outer peripheral filter cover 23ac will be described later.

[Configuration of filter regeneration unit]
FIG. 8 shows a CC cross section in FIG. 6 showing the filter regeneration unit 23f of the deodorizing unit 23 of the embodiment. As shown in FIG. 8, the filter regeneration unit 23f includes a case 23e, a heat radiating plate 23c, and a PTC (Positive Temperature Coefficient) heater 23b. The case 23e is formed in a box shape having a substantially triangular prism shape. The case 23e covers a part of the circumferential direction of the deodorizing filter portion 23a. Case 23e has a pair of front side case member 23ea and back side case member 23eb to be combined. The front case member 23ea forms a front side portion of the case 23e. The back side case member 23eb forms a back side portion of the case 23e. A space is formed inside the case 23e constituted by the front side case member 23ea and the back side case member 23eb. This space becomes, for example, a heating space portion S1 in which the PTC heater 23b is disposed as will be described later.

  The heat radiating plate 23c has a pair of a front side heat radiating plate 23ca and a back side heat radiating plate 23cb which are arranged to face each other. The front side heat sink 23ca is supported inside the case 23e. The front side heat radiating plate 23ca faces a part in the circumferential direction of the deodorizing filter portion 23a. In the deodorizing filter portion 23a, a part of the deodorizing filter portion 23a is covered from the front side by the front side heat radiating plate 23ca. Similarly, the back side heat sink 23cb is supported inside the case 23e. The back side heat radiating plate 23cb faces a part in the circumferential direction of the deodorizing filter portion 23a. In the deodorizing filter portion 23a, a part of the deodorizing filter portion 23a is covered from the back side by the back side heat radiating plate 23cb.

  The PTC heater 23b generates heat when energized, and has a property that the resistance value increases as the temperature rises, and self-controls the amount of heat generation using this property. The PTC heater 23b is formed in a rectangular parallelepiped shape and is provided inside the case 23e. The PTC heater 23b is disposed on the outer peripheral side of the deodorizing filter portion 23a, and is supported by being sandwiched between the front side heat radiating plate 23ca and the rear side heat radiating plate 23cb. The PTC heater 23b is abutted against a positioning projection 23cf (FIG. 9) of a back side heat radiating plate 23cb described later. Further, the PTC heater 23b is abutted against a support portion formed on the back side case member 23eb, so that the movement of the PTC heater 23b in the Z direction is restricted.

  FIG. 9 is an exploded perspective view showing the filter regeneration unit 23f of the deodorizing unit of the embodiment. The front side heat radiating plate 23ca and the back side heat radiating plate 23cb are made of a material having good thermal conductivity such as an aluminum material or an aluminum alloy material, for example. As shown in FIG. 9, the front-side heat radiating plate 23ca is disposed on the front side of the deodorizing filter portion 23a. The outer shape of the front side heat radiating plate 23ca is formed in a substantially triangular shape in which the width dimension in the left-right direction (circumferential direction of the deodorizing filter portion 23a) increases from the through hole 23ad of the deodorizing filter portion 23a toward the outer peripheral side of the deodorizing filter portion 23a. Has been. The front-side heat radiating plate 23ca has a filter facing surface 23caa and a cover facing surface 23cab. The filter facing surface 23caa is one surface of the front side heat radiating plate 23ca, and the cover facing surface 23cab is the other surface of the front side heat radiating plate 23ca. A through hole 23 cag corresponding to the through hole 23 ad of the deodorizing filter portion 23 a is formed in the front side heat radiating plate 23 ca. A shaft portion 23xa of a back side case member 23eb, which will be described later, is inserted into the through hole 23cag.

  The back side heat radiating plate 23cb is disposed to face the back side of the deodorizing filter portion 23a. The outer shape of the backside heat radiating plate 23cb is formed in a substantially triangular shape in which the width dimension in the left-right direction (the circumferential direction of the deodorizing filter portion 23a) increases from the through hole 23ad of the deodorizing filter portion 23a toward the outer peripheral side. The rear side heat sink 23cb has a filter facing surface 23cba and a cover facing surface 23cbb. The filter facing surface 23cba is one surface of the back side heat radiating plate 23cb, and the cover facing surface 23cbb is the other surface of the filter facing surface 23cba.

  As shown in FIGS. 8 and 9, a positioning projection 23cf for positioning the PTC heater 23b is provided on the filter facing surface 23cba of the rear side heat radiating plate 23cb, and the positioning projection 23cf hits the outer peripheral surface of the PTC heater 23b. Thus, the position of the PTC heater 23b with respect to one side in the Z direction (the inner peripheral side of the deodorizing filter portion 23a) is restricted. Further, similarly to the rear side heat radiating plate 23cb, the filter facing surface 23caa of the front side heat radiating plate 23ca is also provided with positioning protrusions 23cg for positioning the PTC heater 23b (see FIG. 8). A through hole 23cbg into which a shaft portion 23xa of a back side case member 23eb, which will be described later, is inserted is formed at the inner peripheral end of the back side heat radiating plate 23cb.

  The PTC heater 23b has a front-side heat radiating plate 23ca and a rear-side heat radiating plate on the side edges on the outer peripheral side of the deodorizing filter portion 23a on the filter-facing surface 23caa of the front-side heat radiating plate 23ca and the filter-facing surface 23cba of the back-side radiating plate 23cb. 23cb and is supported. The front side heat radiating plate 23ca is disposed so that the filter facing surface 23caa faces the deodorizing filter portion 23a. The back side heat radiating plate 23cb is disposed so that the filter facing surface 23cba faces the deodorizing filter portion 23a. Note that thermal conductive grease or the like may be applied between the PTC heater 23b and the front side heat radiating plate 23ca and the rear side heat radiating plate 23cb in order to increase the thermal conductivity.

  For convenience of explanation, the rear side case member 23eb will be described first. The back side case member 23eb is formed of a synthetic resin material. As shown in FIG. 9, the outer shape of the back side case member 23eb is formed to be slightly larger than the outer shape of the back side heat radiating plate 23cb. The back side case member 23eb has a heating space S1b (corresponding to the back side of the heating space S1) inside thereof. For example, the PTC heater 23b and the back side heat sink 23cb are disposed in the heating space S1b. The heating space S1b functions as a space for heating the deodorizing filter 23aa.

  The back side case member 23eb is formed in a box shape with a bottom, and the back side case member 23eb is a bottom portion 23eda and a first side portion as an outer peripheral wall formed along the outer periphery of the back side case member 23eb. 23 edb, a second side portion 23 edc, a third side portion 23 edd, and a fourth side portion 23 ede. The bottom 23eda is formed in a substantially triangular plate shape. The first side portion 23edb, the second side portion 23edc, the third side portion 23edd, and the fourth side portion 23ede are each formed to rise from the outer peripheral portion of the bottom portion 23eda. The 1st side part 23edb is formed in the part arrange | positioned at the through-hole 23ad side of the deodorizing filter part 23a in the outer peripheral part of the bottom part 23eda. The 4th side part 23ede is formed in the part arrange | positioned in the outer peripheral part of the deodorizing filter part 23a in the outer peripheral part of the bottom part 23eda. The second side portion 23edc and the third side portion 23edd are formed on both sides in the Y direction of the outer peripheral portion of the bottom portion 23eda. A space surrounded by the bottom portion 23eda, the first side portion 23edb, the second side portion 23edc, the third side portion 23edd, and the fourth side portion 23ede is a back side internal space.

  A shaft portion 23xa that is inserted into the through hole 23ad of the deodorizing filter portion 23a and rotatably supports the deodorizing filter portion 23a is formed in the bottom portion 23eda of the back side case member 23eb. The shaft portion 23xa has a through hole 23xaa into which a screw 23t or the like as a coupling member is screwed. Further, on both sides in the Y direction of the bottom portion 23eda of the back side case member 23eb, there are bosses having through holes into which screws 23t and the like as connecting members for integrally fixing the front side case member 23ea and the back side case member 23eb are screwed. 23xb are formed.

  As shown in FIGS. 9 and 10, the front side case member 23ea is formed of a synthetic resin material in the same manner as the back side case member 23eb. The outer shape of the front side case member 23ea is formed to be slightly larger than the outer shape of the front side heat radiating plate 23ca. The front side case member 23ea has a heating space S1a (corresponding to the front side of the heating space S1) inside thereof. For example, the PTC heater 23b and the front side heat radiating plate 23ca are disposed in the heating space S1a. The heating space S1a functions as a space for heating the deodorizing filter 23aa via the front side heat radiating plate 23ca.

  The front side case member 23ea is formed in a box shape with a bottom, and includes a bottom portion 23eca, a first side portion 23ecb and a second side portion 23ecc as outer peripheral walls formed along the outer periphery of the front side case member 23ea. , A third side portion 23ecd and a fourth side portion 23ece. The bottom 23eca is formed in a substantially triangular plate shape. The first side portion 23ecb, the second side portion 23ecc, the third side portion 23ecd, and the fourth side portion 23ece are each formed to rise from the outer peripheral portion of the bottom portion 23eca. The 1st side part 23ecb is formed in the part arrange | positioned at the through-hole 23ad side of the deodorizing filter part 23a in the outer peripheral part of the bottom part 23eca. The 4th side part 23ece is formed in the part arrange | positioned in the outer peripheral part of the bottom part 23eca at the outer peripheral side of the deodorizing filter part 23a. The second side portion 23ecc and the third side portion 23ecd are formed on both sides in the Y direction of the outer peripheral portion of the bottom portion 23eca. A space surrounded by the bottom 23eca, the first side 23ecb, the second side 23ecc, the third side 23ecd, and the fourth side 23ece is the front side internal space.

  A shaft seat portion 23xc is formed at a position facing the through hole 23ad of the deodorizing filter portion 23a on the bottom portion 23eca of the front case member 23ea. The tip end of the shaft portion 23xa of the back side case member 23eb is abutted against the shaft seat portion 23xc. The shaft seat portion 23xc has a through hole into which the screw 23t is screwed.

  By combining the front side case member 23ea and the back side case member 23eb, a case 23e in which a part of the PTC heater 23b, the front side heat radiating plate 23ca, the back side heat radiating plate 23cb, and the deodorizing filter portion 23a is accommodated is provided. Composed. The shaft portion 23xa of the back side case member 23eb is inserted into the through hole 23ad of the deodorizing filter portion 23a, so that the deodorizing filter portion 23a is rotatably supported by the shaft portion 23xa. Further, as shown in FIGS. 8 and 9, the shaft portion 23xa is passed through the cylindrical shaft member 23xe, and deodorized via the shaft member 23xe passed through the through hole 23ad of the deodorizing filter portion 23a. The filter part 23a is supported. The shaft member 23xe is made of, for example, a metal material having thermal conductivity such as stainless steel.

  In the deodorizing unit 23 assembled as described above, as shown in FIG. 6, the filter regeneration unit 23f is accommodated in the regeneration unit storage unit 23ge of the holding unit 23g. Further, the deodorizing filter portion 23a is rotated by the drive portion 23h because the gear portion 38 of the outer peripheral filter cover 23ac is meshed with the drive gear 23j. Further, in the deodorizing filter portion 23a, the gear portion 38 of the outer peripheral filter cover 23ac is meshed with the rotation detecting gear 23k, and the rotation is detected by the rotation detecting portion 23r.

  Regarding the outer peripheral filter cover 23ac of the deodorizing filter portion 23a configured as described above, a configuration that is a feature of the present embodiment will be described below. FIG. 10 is an exploded perspective view showing the outer peripheral filter cover 23ac of the deodorizing filter portion 23a of the deodorizing unit 23 of the embodiment. As shown in FIGS. 8 and 10, the outer peripheral filter cover 23ac is provided on the outer peripheral portion of the deodorizing filter 23aa, and the front side cover member 23aca is a set of cover members that are combined with the deodorizing filter 23aa interposed therebetween. And a back side cover member 23acb. The front side cover member 23aca and the back side cover member 23acb are formed of a resin material.

(Front cover member)
FIG. 11 is a plan view showing a part of the front cover member 23aca of the outer peripheral filter cover 23ac in the embodiment. FIG. 12 is an enlarged perspective view of a part of the front side cover member 23aca of the outer peripheral filter cover 23ac in the embodiment. 13 is a cross-sectional view taken along the line DD in FIG. 12 showing the front side cover member 23aca of the outer peripheral filter cover 23ac in the embodiment. FIG. 14 is a plan view showing an engaging convex portion and an opening of the front cover member 23aca of the outer peripheral filter cover 23ac in the embodiment.

  As shown in FIGS. 11, 12, and 13, the front cover member 23aca includes an annular portion 33 that covers the deodorizing filter 23aa along the outer periphery of the deodorizing filter 23aa, and a filter holding portion 34 that holds the deodorizing filter 23aa. And having. Further, the front side cover member 23aca includes an engagement convex portion 35 as an engagement portion that engages with the back side cover member 23acb, and an opening 36 formed in the filter holding portion 34 so as to face the engagement convex portion 35. And an outer peripheral wall 37 formed on the outer peripheral side of the annular portion 33.

  An outer peripheral wall 37 is formed on the annular portion 33 so as to extend to the outer peripheral side in the radial direction of the annular portion 33. The outer peripheral wall 37 is formed along the circumferential direction of the annular portion 33. A gear portion 38 is formed on the annular portion 33 across the outer peripheral surface of the annular portion 33 and the outer peripheral wall 37. The gear portion 38 is formed over the entire circumferential direction of the annular portion 33. Further, the gear portion 38 has a regulating surface 38a that faces the outer peripheral wall 47 of the rear side cover member 23acb described later and contacts the outer peripheral wall 47 when the front side cover member 23aca and the rear side cover member 23acb are assembled. .

  The filter holding part 34 is formed on the inner peripheral surface 33 a of the annular part 33 in a rib shape protruding along the radial direction of the annular part 33. The filter holding part 34 is formed along the circumferential direction of the annular part 33. The filter holding part 34 also functions as a rib that reinforces the annular part 33.

  As shown in FIGS. 12 and 13, the engagement convex portion 35 is formed on the inner peripheral surface 33 a of the annular portion 33. The engaging convex part 35 protrudes toward the center side in the radial direction of the annular part 33. The engagement convex portion 35 is formed with an engagement surface 35a that contacts and engages with an engagement concave portion 45 of a back side cover member 23acb described later. The engaging convex part 35 engages with the engaging concave part 45 of the back side cover member 23acb, thereby integrally engaging the front side cover member 23aca and the back side cover member 23acb.

  The opening 36 of the front cover member 23aca is formed as a rectangular through hole. The opening 36 penetrates the filter holding part 34 with respect to the thickness direction (X-axis direction) of the deodorizing filter 23aa held by the filter holding part 34. As shown in FIG. 14, when the opening 36 is viewed from the through direction of the opening 36, in other words, when the opening 36 is viewed along the X axis intersecting the opening surface of the opening 36, The engagement surface 35 a is located in the opening area of the opening 36. Thereby, the engaging part 35a of the engaging convex part 35 can be formed by the core part Ja because the core part Ja (FIG. 13) of the molding die J described later passes through the opening 36.

  As shown in FIG. 13, the molding die J is a movable side die having a rectangular parallelepiped core portion Ja. The core portion Ja is disposed so as to correspond to the engaging convex portion 35. The opening 36 and the engaging surface 35a of the engaging convex portion 35 are formed by the core portion Ja. The core portion Ja has an inclined surface Jb that applies a predetermined draft to the draft direction G1 along the X axis. For this reason, the inner surface 36 a of the opening 36 has an inclination corresponding to the inclined surface Jb of the core portion Ja, that is, an inclination in which the opening area of the opening 36 gradually decreases from the opening 36 toward the engaging convex portion 35.

  As described above, the front side cover member 23aca has the opening 36 at a position facing the engaging convex portion 35, so that the core portion Ja can be inserted and removed through the opening 36 during molding. For this reason, for example, it is possible to form a shape having the filter holding portion 34 and the engagement convex portion 35 without using a slide core (not shown) moved along the Z axis in FIG. The structure of the molding die J is simplified.

(Back side cover member)
FIG. 15 is a plan view showing a part of the back side cover member 23acb of the outer peripheral filter cover 23ac in the embodiment. FIG. 16 is an enlarged perspective view of a part of the back side cover member 23acb of the outer peripheral filter cover 23ac in the embodiment. FIG. 17 is an enlarged perspective view of a part of the back side cover member 23acb of the outer peripheral filter cover 23ac in the embodiment. FIG. 18 is a cross-sectional view taken along line EE in FIG. 16 showing the back side cover member 23acb of the outer peripheral filter cover 23ac in the embodiment. FIG. 19 is a plan view showing the engagement recess and opening of the back side cover member 23acb of the outer peripheral filter cover 23ac in the embodiment.

  As shown in FIGS. 15, 16, 17, and 18, the back side cover member 23 acb includes an annular portion 43 that covers the outer periphery of the deodorizing filter 23aa, and a filter holding portion 44 that holds the deodorizing filter 23aa. Have. The back side cover member 23acb includes an engagement recess 45 as an engagement portion that engages with the back side cover member 23acb, an opening 46 formed in the filter holding portion 44 so as to face the engagement recess 45, and an annular shape. And an outer peripheral wall 47 formed on the outer peripheral side of the portion 43.

  An outer peripheral wall 47 is formed on the annular portion 43 so as to extend to the outer peripheral side in the radial direction of the annular portion 43. The outer peripheral wall 47 is formed along the circumferential direction of the annular portion 43. When the front side cover member 23aca and the rear side cover member 23acb are assembled, the outer peripheral wall 47 has a regulating surface 47a that faces the gear portion 38 of the front side cover member 23aca and contacts the regulating surface 38a of the gear portion 38. . Further, as shown in FIGS. 16, 17, and 18, a part of the annular part 43 functions as an engaging recess 45 by cutting away a part of the annular part 43 corresponding to the opening 46.

  The filter holding portion 44 is formed on the inner peripheral surface 43 a of the annular portion 43 in a rib shape that projects along the radial direction of the annular portion 43. The filter holding portion 44 is formed along the circumferential direction of the annular portion 43. The filter holding portion 44 also functions as a rib that reinforces the annular portion 43.

  The engagement recess 45 has an inner surface that faces the opening 46 of the filter holding portion 44 among the inner surface of a part of the annular portion 43 that is cut away, and is engaged with the engagement protrusion 35 of the front cover member 23aca. The engagement surface 45a engages with the surface 35a. The engagement concave portion 45 engages with the engagement convex portion 35 of the front side cover member 23aca, thereby integrally engaging the front side cover member 23aca and the rear side cover member 23acb.

  The opening 46 of the back side cover member 23acb is formed as a rectangular through hole. The opening 46 penetrates the filter holding part 44 with respect to the thickness direction (X-axis direction) of the deodorizing filter 23aa held by the filter holding part 44. The opening 46 is formed by cutting out a part of the annular portion 43 and cutting out a part of the outer peripheral wall 47. For this reason, the opening 46 is formed across the filter holding portion 44, the annular portion 43 and the outer peripheral wall 47.

  As shown in FIG. 19, when the opening 46 is viewed from the direction through which the opening 46 penetrates, in other words, when the opening 46 is viewed along the X axis intersecting the opening surface of the opening 46, the engagement recess 45 is engaged. The mating surface 45 a is located in the opening area of the opening 46. Thereby, the core part Ka (FIG. 18) of the molding die K to be described later passes through the opening 46, whereby the engagement surface 45a of the engagement recess 45 can be formed by the core part Ka.

  As shown in FIG. 18, the molding die K is a movable side die having a rectangular parallelepiped core portion Ka. The core portion Ka is disposed so as to correspond to the engagement surface 45a of the engagement recess 45. The opening 46 and the engagement surface 45a of the engagement recess 45 are formed by the core portion Ka. The core portion Ka has an inclined surface Kb that applies a predetermined draft to the draft direction G2 along the X axis. For this reason, the inner surface 46 a of the opening 46 has an inclination corresponding to the inclined surface Kb of the core portion Ka, that is, an inclination in which the opening area of the opening 46 gradually decreases from the opening 46 toward the engaging recess 45.

  As described above, the back cover member 23acb has the opening 46 at a position facing the engaging recess 45, so that the core portion Ka can be inserted and removed through the opening 46 during molding. For this reason, for example, it is possible to form a shape having the filter holding portion 44 and the engagement recess 45 without using a slide core (not shown) moved along the Z axis in FIG. The structure of the mold K is simplified.

(Engagement state of front cover member and back cover member)
FIG. 20 is a perspective view illustrating a state where the front cover member 23aca and the back cover member 23acb of the outer peripheral filter cover 23ac in the embodiment are assembled. 21 is a cross-sectional view taken along the line FF in FIG. 20 showing a state where the front cover member 23aca and the back cover member 23acb of the outer peripheral filter cover 23ac in the embodiment are assembled.

  As shown in FIGS. 20 and 21, with the front side cover member 23aca and the rear side cover member 23acb assembled, the outer peripheral wall 37 of the front side cover member 23aca, the outer peripheral wall 47 of the rear side cover member 23acb, In between, the gear part 38 is arrange | positioned. Further, as shown in FIG. 21, by assembling the front cover member 23aca and the back cover member 23acb, the filter holding portion 34 of the front cover member 23aca and the filter holding portion 44 of the back cover member 23acb In the meantime, both surfaces of the outer peripheral portion of the deodorizing filter 23aa are sandwiched and held.

  The engaging convex part 35 of the front side cover member 23aca and the engaging concave part 45 of the back side cover member 23acb are engaged with each other when the front side cover member 23aca and the back side cover member 23acb are assembled. With the engagement convex portion 35 and the engagement concave portion 45 engaged with each other, the engagement surface 35a of the engagement convex portion 35 and the engagement surface 45a of the engagement concave portion 45 come into contact with each other, and the front side cover member 23aca The back side cover member 23acb is restricted from moving away from the thickness direction of the deodorizing filter 23aa, that is, the direction along the X axis. In addition, in a state where the engagement convex portion 35 and the engagement concave portion 45 are engaged, the engagement surface 35a of the engagement convex portion 35 of the front side cover member 23aca and the engagement concave portion 45 of the back side cover member 23acb are engaged. When the mating surface 45a moves in the direction away from the thickness direction of the deodorizing filter 23aa, that is, the direction along the X axis, the filter holding portion 34 and the filter holding portion 44 move in a direction in which they approach each other. However, since the filter holding part 34 and the filter holding part 44 sandwich the deodorizing filter 23aa, the filter holding part 34 and the filter holding part 44 cannot move toward each other. As a result, the filter holding part 34 and the filter holding part 44 are engaged with the engaging convex part 35. The engagement state of the recess 45 is kept good. Further, even when the regulation surface 38a of the front cover member 23aca and the regulation surface 47a of the back cover member 23acb are in contact with each other, the engagement surface 35a and the engagement surface 45a move away from the direction along the X axis. To be regulated. Also by this, the engagement state of the front side case portion 23aca material and the back side cover member 23acb is kept good.

  Further, as shown in FIG. 21, the opening 46 of the back side cover member 23acb is engaged with the engagement convex portion 35 and the engagement concave portion 45 after the front side cover member 23aca and the back side cover member 23acb are assembled. It also functions as an insertion port for inserting a tool or the like when releasing the state.

  Further, in a state where the front side cover member 23aca and the rear side cover member 23acb are assembled, the opening 36 of the front side cover member 23aca and the opening 46 of the rear side cover member 23acb sandwich the outer periphery of the deodorizing filter 23aa. It faces each other and is adjacent to the outer periphery of the deodorizing filter 23aa. For this reason, for example, the air flowing in from the opening 36 flows out of the opening 46 through the outer periphery of the deodorizing filter 23aa, thereby increasing the flow rate of air passing through the deodorizing filter 23aa and improving the odor component removal performance. ing. In addition, it is not limited to the configuration in which the front cover member 23aca is disposed on the upstream side in the air flow direction with respect to the deodorizing filter 23aa, and the back cover member 23acb is disposed on the downstream side. 23acb may be disposed, and the front side cover member 23aca may be disposed on the downstream side.

  A modification of the shapes of the opening 36 of the front cover member 23aca and the opening 46 of the back cover member 23acb will be described. In the modified example, the same members and parts as those in the above-described embodiment are denoted by the same reference numerals as those in the embodiment, and the description thereof is omitted. FIG. 22 is a plan view showing a modification of the opening 36 of the front cover member 23aca of the outer peripheral filter cover 23ac in the embodiment. FIG. 23 is a plan view showing a modification of the opening 46 of the back side cover member 23acb of the outer peripheral filter cover 23ac in the embodiment.

  As shown in FIG. 22, a part of the opening 36 of the front cover member 23aca is continuous with the inner peripheral edge 34a in the radial direction of the annular portion 33 (the radial direction of the deodorizing filter 23aa) of the filter holding portion 34. Notched into. Similarly, as shown in FIG. 23, a part of the opening 46 of the back side cover member 23acb is connected to the inner peripheral edge portion 44a of the filter holding portion 44 in the radial direction of the annular portion 43 (the radial direction of the deodorizing filter 23aa). Cut out to be continuous.

  Thus, the openings 36 and 46 are partly cut out so as to be continuous with the inner peripheral edge portions 34a and 44a, thereby increasing the flow rate of air passing through the deodorizing filter 23aa and improving the odor component removal performance of the deodorizing filter 23aa. Further enhanced. The shape in which a part of the openings 36 and 46 are cut out is appropriately set so that the mechanical strength of the filter holding portions 34 and 44 is appropriately secured.

[Operation of air cleaner]
The air cleaner 1 starts operation when the user operates the operation unit 15. When the air cleaner 1 starts operation, the blower 25 is driven, the first electric dust collector 22a and the second electric dust collector 22b of the dust collection unit 22 are energized, and the humidification filter 24a of the humidification unit 24 rotates. Start. In the air cleaner 1, air is sucked into the inside of the main body housing 11 from the upper surface inlet 13 a, the right side inlet 13 b, the left side inlet 13 c, and the lower inlet 13 d when the blower 25 is driven. .

  The air sucked into the main body housing 11 is supplied from the upper surface inlet 13a, the right side inlet 13b, the left side inlet 13c and the lower inlet 13d from the upper surface outlet 14a, the right side outlet 14b and the left side. It flows through the ventilation path 10 toward the blower outlet 14c. In the air flowing through the ventilation path 10, dust is first collected by the prefilter 21. In the air in which the dust is collected by the prefilter 21, fine dust, pollen and the like that have not been collected by the prefilter 21 are collected by the dust collection unit 22. Part of the air in which dust is collected by the dust collection unit 22 is supplied to the deodorization unit 23, and the rest is supplied to the humidification unit 24.

  The air supplied to the deodorizing unit 23 is supplied to the ventilation surface which is not covered by the filter regeneration unit 23f in the deodorizing filter 23aa via the opening 23gd of the holding unit 23g. The air supplied to the ventilation surface of the deodorizing filter 23aa passes through the deodorizing filter 23aa, so that odor components are removed and deodorized. At this time, the deodorizing filter 23aa of the deodorizing unit 23 is configured so that the air supplied to the deodorizing unit 23 is preliminarily removed by the prefilter 21 and the dust collecting unit 22 so that dust, pollen, etc. Clogging is prevented.

  Part of the air deodorized by the deodorizing unit 23 is supplied to the humidifying unit 24 and the rest is supplied to the blower 25. The air supplied to the humidifying unit 24 is humidified by the humidifying unit 24. The air humidified by the humidification unit 24 is supplied to the blower 25. The air supplied to the blower 25 is blown out of the air purifier 1 from the upper surface outlet 14a, the right side outlet 14b, and the left side outlet 14c.

  During operation, the air purifier 1 continuously energizes the PTC heater 23b and drives the drive unit 23h to rotate the deodorizing filter unit 23a by a predetermined rotation angle every predetermined time, for example. This predetermined time is a processing time required to regenerate the deodorizing ability of the deodorizing filter unit 23a, and for example, 1.5 hours is exemplified. An example of the predetermined rotation angle is about 36 degrees. The air cleaner 1 regenerates the deodorizing ability of the portion covered with the filter regeneration unit 23f in the circumferential direction of the deodorization filter 23aa by rotating the deodorization filter unit 23a. That is, the air purifier 1 deodorizes the air that passes through the portion of the deodorizing filter 23aa that is not covered by the filter regeneration unit 23f, while regenerating the deodorizing ability at the position covered by the filter regeneration unit 23f of the deodorization filter 23aa. .

  As described above, the deodorizing filter unit 23a of the deodorizing unit 23 according to the embodiment is provided on the outer peripheral portion of the plate-shaped deodorizing filter 23aa and a pair of front side cover member 23aca and back side that are combined with the deodorizing filter 23aa interposed therebetween. An outer peripheral filter cover 23ac having a cover member 23acb is provided. The front-side cover member 23aca includes a filter holding portion 34, an engaging convex portion 35, and an opening 36 formed in the filter holding portion 34 so as to face the engaging convex portion 35. The back side cover member 23acb has a filter holding portion 44, an engagement recess 45, and an opening 46 formed in the filter holding portion 44 so as to face the engagement recess 45. Accordingly, when the front side cover member 23aca and the rear side cover member 23acb are molded, the core part of the molding die can pass through the opening 36 of the front side cover member 23aca, and the core parts of the molding dies J and K are formed. Ja and Ka can pass through the opening 46 of the back side cover member 23acb. Therefore, the front side cover member 23aca in which the filter holding part 34 and the engaging convex part 35 have an undercut shape, and the back side cover member 23acb in which the filter holding part 44 and the engaging concave part 45 have an undercut shape are provided. It can be formed without using a slide core. As a result, the molding dies J and K can be simplified, and the manufacturing cost of the outer peripheral filter cover 23ac can be reduced.

  Moreover, the engaging convex part 35 of the front side cover member 23aca which the deodorizing unit 23 of an Example has is located in the opening area | region of the opening 36, when the opening 36 is seen from the penetration direction of this opening 36. FIG. Further, the engagement recess 45 of the back side cover member 23acb is located in the opening region of the opening 46 when the opening 46 is viewed from the direction through which the opening 46 passes. Accordingly, the core portions Ja and Ka of the molding dies J and K pass through the openings 36 and 46, so that the engagement surface 35a of the engagement convex portion 35 and the engagement surface 45a of the engagement concave portion 45 are easily formed. It becomes possible.

  Moreover, the inner surface 36a of the opening 36 of the front cover member 23aca included in the deodorizing unit 23 of the embodiment has an inclination in which the opening area of the opening 36 gradually decreases from the opening 36 toward the engaging convex portion 35. Further, the inner surface 46a of the opening 46 of the back cover member 23acb has an inclination in which the opening area of the opening 46 gradually decreases from the opening 46 toward the engaging convex portion 35. Accordingly, the openings 36 and 46 can be appropriately formed by the core portions Ja and Ka of the molding dies J and K.

  Moreover, the opening 36 of the front side cover member 23aca and the opening 46 of the back side cover member 23acb which the deodorizing unit 23 of an Example has are opposed on both sides of the outer peripheral part of the deodorizing filter 23aa. As a result, the air flowing in from one of the opening 36 and the opening 46 of the outer peripheral filter cover 23ac can flow out from the other through the outer peripheral portion of the deodorizing filter 23aa. For this reason, the flow volume of the air which passes the deodorizing filter 23aa can be increased, and the removal performance of the odor component of the deodorizing filter 23aa can be improved.

  Further, a part of the opening 36 of the front cover member 23aca included in the deodorizing unit 23 of the embodiment is cut out so as to be continuous with the inner peripheral edge 34a in the radial direction of the annular portion 33 of the filter holding portion 34. . Further, a part of the opening 46 of the back side cover member 23acb is cut out so as to be continuous with the inner peripheral edge portion 44a of the filter holding portion 44 in the radial direction of the annular portion 43. Thereby, by increasing the opening area of the openings 36 and 46, the amount of air flowing into the deodorizing filter 23aa through the openings 36 and 46 can be increased, and the odor component removing performance of the deodorizing filter 23aa can be further enhanced.

  Further, the engaging convex portion 35 of the front side cover member 23aca included in the deodorizing unit 23 of the embodiment is an engaging surface that comes into contact with the engaging concave portion 45 when the front side cover member 23aca and the rear side cover member 23acb are combined. 35a. Further, the engagement recess 45 of the back side cover member 23acb has an engagement surface 45a that contacts the engagement projection 35 when the front side cover member 23aca and the back side cover member 23acb are combined. When the engagement surface 35a and the engagement surface 45a move away from each other, the filter holding portion 34 and the filter holding portion 44 move in a direction approaching each other. However, since the filter holding part 34 and the filter holding part 44 sandwich the deodorizing filter 23aa, the filter holding part 34 and the filter holding part 44 cannot move toward each other. As a result, the filter holding part 34 and the filter holding part 44 are engaged with the engaging convex part 35. The engagement state of the recess 45 is kept good. Further, the annular portion 33 of the front cover member 23aca is formed with a regulation surface 38a that comes into contact with the back cover member 23acb when the engagement surface 35a and the engagement surface 45a move away from each other. The annular portion 43 of the back cover member 23acb is formed with a regulation surface 47a that contacts the front cover member 23aca when the engagement surface 35a and the engagement surface 45a move away from each other. Also by this, since the engagement state of the engagement convex part 35 and the engagement recessed part 45 is maintained favorable, the reliability of the assembly state of the front side cover member 23aca and the back side cover member 23acb can be improved.

1 Air purifier 23 Deodorizing unit (adsorption unit)
23a deodorizing filter part 23aa deodorizing filter (filter)
23ac Perimeter filter cover (cover)
23b PTC heater (heater)
23c Heat sink 23h Drive unit 23aca Front side cover member (cover member)
33 annular portion 33a inner peripheral surface 34 filter holding portion 35 engaging convex portion (engaging portion)
35a engagement surface 36 opening 36a inner surface 37 outer peripheral wall 38 gear portion 38a regulating surface 23acb back side cover member (cover member)
43 Annular part 43a Inner peripheral surface 44 Filter holding part 45 Engaging recess (engaging part)
45a Engagement surface 46 Opening 46a Inner surface 47 Outer peripheral wall 47a Restriction surface J, K Molding die Ja, Ka Core part Jb, Kb Inclined surface

Claims (7)

A filter formed in a plate shape;
A heat dissipating plate disposed to face a part of the filter;
A heater for heating a part of the filter through the heat sink by heating the heat sink;
A drive unit that moves the filter relative to the heat sink;
A cover having a set of cover members provided on an outer periphery of the filter and combined with the filter interposed therebetween;
Each of the set of cover members includes an annular portion that covers the filter along an outer periphery of the filter, a filter holding portion that is formed on an inner peripheral surface of the annular portion and holds the filter, and the annular portion An adsorption unit having an engagement part formed on a part and engaging the set of cover members, and an opening formed in the filter holding part facing the engagement part. The engaging portion is located in the opening region of the opening when the opening is viewed from the penetrating direction of the opening.
The adsorption unit according to claim 1. The inner surface of the opening has an inclination in which the opening area of the opening gradually decreases from the opening toward the engaging portion.
The adsorption unit according to claim 1 or 2. Each opening of the set of cover members is opposed to the outer periphery of the filter.
The adsorption unit according to any one of claims 1 to 3. A part of the opening is cut out so as to be continuous with the inner peripheral edge of the filter holding portion in the radial direction of the annular portion,
The adsorption unit according to any one of claims 1 to 4. Each of the engaging portions has an engaging surface that comes into contact with each other when the set of cover members are combined.
The annular portion is formed with a regulating surface that comes into contact with each other when the engaging surfaces move in directions away from each other.
The adsorption unit according to any one of claims 1 to 5. The adsorption unit according to any one of claims 1 to 6,
The filter adsorbs the odor component contained in the air when air passes through, and decomposes the odor component when heated.
Air cleaner.

Images