JP2003326121A - Air cleaning filter and air conditioner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an air cleaning filter having a honeycomb structure allowing air to flow smoothly even if air obliquely flows in the filter. <P>SOLUTION: In the air cleaning filter having a honeycomb structure having many gaps, holes are bored in the peripheral wall surfaces of the gaps of the honeycomb structure to allow the mutually adjacent gaps to communicate with each other. Further, the air cleaning filter is provided only on the air inflow side of the peripheral wall surfaces of the gaps. The holes have a slot shape and the slots are arranged so as to become almost parallel to the air inflow direction of the peripheral wall surfaces of the gaps. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning filter having holes on the wall surface of an air passage and an air conditioner using the filter.

[0002]

2. Description of the Related Art As a conventional air cleaning filter, for example, there is one disclosed in Japanese Patent Laid-Open No. 4-176310, and a perspective view of this air cleaning filter is shown in FIG. As shown in this figure, in the conventional air cleaning filter, the filter medium 1 which has been electretized (made into an electrode) is continuously folded in a fold shape to form a continuous fold space, and the filter medium 1 in this fold space is electretized. The flat filter medium 2 was fused or adhered and laminated, and these were multi-staged to form a honeycomb structure electret filter having a large number of void cores, which was used as an air cleaning filter.

Next, the collection principle of this air cleaning filter will be described. First, when dirty air in a room flows into a large number of electret voids of an air purifying filter, the dirty air collides with the uneven surfaces and fluffy surfaces of the electret filter media 1 and 2 while causing mechanical damage. Foreign particles (such as dust) are adsorbed and collected on the surface of the filter medium by the collection and the particle suction force by the action of the electric Coulomb force and the induction force.

Therefore, when a filter having a honeycomb structure having a large number of electretized voids is used, as described above, the collection efficiency is improved and the porosity of the core through which air passes can be increased. As a result, when the air flows in parallel with the wall surfaces around the voids of the filter media 1 and 2, the wind pressure loss can be made considerably smaller than that of other general filters, and the reduction of the air volume can be prevented. However, when the air flows obliquely to the void surface of the filter, it collides with the filter material on the wall surface around the void and flows while bending, so that the longer the wall surface around the void, the more the pressure loss increases.

By adopting such a structure,
Since the surface area of the filter medium can be several times as large as that of the flat type or the pleated type, the clogging life of the filter, which is almost proportional to the surface area of the filter medium, can be improved.

Further, in the above description, particles such as foreign matters can be collected by using a filter having a honeycomb structure having a large number of electretized voids,
And it was explained that the pressure loss is small and the life is improved, but even if a filter material containing a material having an action of adsorbing or decomposing odorous components such as activated carbon and a photocatalyst is used as a filter having a honeycomb structure, the pressure loss is also the same. Since the surface area for adsorbing or decomposing odorous components can be increased several times as compared with a small-sized flat type filter, a filter having good deodorizing performance and a long life can be obtained.

[0007]

As described above,
In a conventional air cleaning filter, when air flows obliquely into the air gap surface of the filter, it collides with the filter material around the air gap wall and flows while bending. Therefore, the longer the air gap wall surface, the more pressure loss increases. was there.

Further, when such a filter having a honeycomb structure is used in an indoor unit of an air conditioner, etc., the longer the cavity surrounding wall surface of the honeycomb core wall surface is, the more the pressure loss increases, so that the air volume of the blower decreases. However, there is a problem that power consumption increases due to an increase in the fan motor input.

The present invention has been made in order to solve the above problems, and even if air obliquely flows into the void surface of the filter, it suppresses the pressure loss and prevents the air volume from decreasing. Aim to get.

Further, while suppressing a decrease in the air volume of the blower,
The purpose is to obtain an air conditioner that prevents an increase in motor input. The purpose is to improve performance.

[0011]

In an air cleaning filter and an air conditioner using the filter according to the present invention, in an air cleaning filter having a honeycomb structure having a large number of voids, holes are formed in a wall surface around the voids of the honeycomb structure. Is provided, and the holes are made to communicate with each other by the holes.

Further, the hole is provided only on the air inflow side of the wall surface around the void.

Further, the hole has an oblong shape, and the oblong hole is arranged so as to be substantially parallel to the air inflow direction of the wall surface around the void.

The wall surface around the voids is formed of a filter medium containing at least either activated carbon or a photocatalyst.

Further, the wall surface around the voids is formed of an electret filter medium obtained by imparting electric polarity to a substrate such as a nonwoven fabric or a film.

Further, the electret filter medium is composed of a laminate of a base material provided with an anodic property and a base material provided with a cathodic property, and the wall surface around the void is formed so as to have both polarities of the laminate. It is a thing.

Further, in the air cleaning filter having a honeycomb structure having a large number of voids, and the wall surface around the voids is made of a laminate of a breathable substrate such as a non-woven fabric and a non-breathable substrate such as a film, A hole is provided only on the wall surface of the permeable base material, and the air gaps adjacent to each other are communicated from the hole through the air permeable base material.

Further, the hole is provided only on the air inflow side of the non-air-permeable base material.

Further, the hole has an elongated hole shape, and the elongated hole is arranged so as to be substantially parallel to the air inflow direction of the wall surface around the void.

In addition, one of the base materials of the laminate is provided with an anodic property and the other base material is provided with a cathodic property, and the wall surface around the voids is configured to have both polarities. Is.

Further, in the air cleaning filter having a honeycomb structure having a large number of voids, and the wall surface around the voids is made of a laminate of a breathable substrate such as a non-woven fabric and a non-breathable substrate such as a film, The elastic base material is provided only on the air outflow side of the wall surface around the voids, and the air gap side adjacent to the air permeable base material on the air inflow side is communicated.

The air cleaning filter according to any one of claims 1 to 11 is provided in the air passage of the indoor unit of the air conditioner.

Further, a plurality of heat exchangers that are bent so as to surround the blower, and an air cleaner having a honeycomb structure that is bent and provided on the upstream side corresponding to the heat exchangers and has a large number of voids. In an air conditioner including a filter, the air purification filter has holes formed in the wall surface around the void according to an inflow angle of air with respect to each normal line of each of the bent filters, and the holes are adjacent to each other by this hole. The voids are communicated with each other.

Further, the holes are provided such that the larger the inflow angle of air with respect to each normal line of each of the bent filters, the larger the occupied area thereof.

The holes are provided with the same specifications for each of the bent filters.

Further, the thickness of each of the bent filters is provided in accordance with the resistance in the air passage so that the air velocity passing through each of the heat exchangers becomes substantially uniform.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Embodiment 1 of the present invention will be described below with reference to FIG. 1 is a perspective view of an air purifying filter having a honeycomb structure having a large number of void cores according to the present invention, and FIG. 2 is an enlarged view of FIG. As shown in these figures, this air purifying filter having a honeycomb structure having a large number of void cores continuously folds the filter medium 1 in a wavy or fold shape to form a continuous wave or a fold space. A flat filter medium 2 is adhered to the filter medium 1 in the space by a fusing agent, an adhesive agent or the like, and the filter medium 1 is stacked in multiple layers. It should be noted that holes 3 are provided on the peripheral wall surface that forms a multiplicity of multi-cavity cores by connecting them in stages so as to allow the adjacent voids 4 to communicate with each other.

Next, the operation of the air cleaning filter constructed as described above will be described. First, as shown in FIG. 3, when air flows into the air purifying filter having a honeycomb structure having a large number of voids and an increased trapping area in parallel with the filter void wall faces 1 and 2, it does not collide with the void wall faces. Therefore, the air does not move so much from the hole 3 to the adjacent void core, and flows smoothly while trapping foreign particles on the void wall surfaces 1 and 2 as trapping surfaces.

Further, when the air flows into the air cleaning filter at an inclination angle θ as shown in FIG. 4, in other words,
When the air flows into the cavity wall surfaces 1 and 2 of the filter medium at an inclination angle θ, the air flows through the cavity 4 while colliding with the cavity wall surfaces 1 and 2, but at this time, the cavity wall surface 1,
As shown in FIG. 5, part of the air flows from the hole 3 to the adjacent void without colliding with the void wall faces 1 and 2 due to the hole 3 provided in the hole 2. Since the energy is small, that is, the flow is such that pressure loss does not occur so much, the energy loss is alleviated, and the noise due to the collision energy is also reduced.

It is also understood from FIG. 6 that the energy loss at this time, that is, the pressure loss due to the presence or absence of the hole, is significantly different between the case with the hole and the case without the hole. However, hole 3 at this time
Is about 30%, and the depth dimension ratio of the cavity wall surface to the opening area of the cavity 4 is about 1.5 in a dimensionless unit when the unit is mm. In other words, in such an air cleaning filter having a honeycomb structure, the depth dimension of the cavity wall surface is generally larger than the maximum length of the cavity opening dimension in order to collect many foreign particles.

Further, in the above description, the hole 3 may be provided at any position on the entire wall surfaces 1 and 2 around the space, but as shown in FIG. 7, only the air inflow side of the wall surfaces 1 and 2 around the space is provided. In this case, it is possible to efficiently reduce the collision energy loss (pressure loss) with respect to the air inflow angle and reduce the noise while reducing the hole processing time and the waste material.

If the hole 3 is formed in an elongated shape and the elongated hole 3a is arranged so as to be substantially parallel to the air inflow direction of the peripheral wall surfaces 1 and 2 of the void as shown in FIG. Since the air flows along the peripheral wall surfaces 1 and 2, in particular, even when the air inflow angle becomes small with respect to the cavity peripheral wall surfaces 1 and 2, that is, even when the air inflow angle becomes 45 ° or less, the elongated holes arranged substantially parallel to each other. 3a allows air to flow efficiently into the adjacent voids 4 and reduces the amount of collision with the peripheral wall surfaces 1 and 2, so that loss of collision energy (pressure loss) can be alleviated and noise can be reduced.

Further, the filter media 1 and 2 which form the wall surface around the voids.
When at least one of activated carbon and a photocatalyst is used in the above, the malodor of the air passing through the filter media 1 and 2 is deodorized or decomposed, so that the loss of collision energy (pressure loss) and the sound are mitigated. You can get a comfortable air purifying filter that removes bad odors.

Further, the filter media 1 and 2 forming the wall surface around the voids.
A fluffy non-woven fabric or a base material such as a fill is used as the base material, and the base material is provided with electric polarity, and the electret filter media 1a and 2a are provided to form the wall surface around the voids. Particles (dust, etc.) are adsorbed on the surface of the filter medium by the effective Coulomb force and the particle suction force due to the action of induced force, so that foreign matter etc. are efficiently removed while reducing the loss of collision energy (pressure loss) and noise. You can get a comfortable air purifying filter.

The above electret filter medium 1a,
When the electric polarity is given to 2a, if the anodic property is given to the surface of one of the base materials and the cathodic property is given to the other surface, and the cavity surrounding wall surface is configured to have both the given polarities, Since the foreign matter itself holds either positive or negative polarity, it is possible to obtain a comfortable air purification filter that efficiently removes particles such as foreign matter as shown in FIG.

Further, in the above description, the holes 3 are replaced by the filter media 1, 2
Although it is provided on both of the wall surfaces of the voids, a similar effect can be obtained even when it is provided on only one of the wall surfaces of the filter media 1 and 2.

Embodiment 2. The second embodiment of the present invention will be described below with reference to FIG. In the second embodiment, the filter media 1, 2 of the first embodiment are
Instead of, for example, a laminate obtained by laminating a breathable base material 7 such as a fluffy non-woven fabric and a non-breathable base material 8 such as a film is used as the filter medium, and the filter medium of this laminate is as described in the first embodiment. In this case, a honeycomb-shaped void wall surface is formed, and at this time, a hole 3 is provided only in the filter material wall surface of the non-air-permeable base material of the laminate, and voids that are adjacent to each other through the air-permeable base material 7 from this hole 3 are formed. It is configured to communicate with each other.

Next, the operation of the air cleaning filter constructed as described above will be described. First, as shown in FIG. 3, when air flows into the air purifying filter having a honeycomb structure having a large number of voids and an increased trapping area in parallel with the filter void wall faces 1 and 2, it does not collide with the void wall faces. Since the air does not move so much from the hole 3 to the adjacent void core, the void wall surface 1 as a capture surface made of the breathable substrate 7 such as a nonwoven fabric or the non-breathable substrate 8 such as a film, It smoothly flows while capturing foreign particles.

Further, when air flows into the air cleaning filter at an inclination angle θ as shown in FIG. 4, in other words,
When the air flows in at an inclination angle θ with respect to the void wall surfaces 1 and 2 of the filter medium, the air flows through the void 4 while colliding with the void wall surfaces 1 and 2, but at this time, the air-impermeable base material is used. Due to the holes 3 provided in the void wall surfaces 1 and 2 of FIG. 8, a part of the air collides with the void wall surfaces 1 and 2 from the hole 3 to the adjacent void 4 through the breathable base material 7, as shown in FIG. Since the flow does not occur, the collision / bending energy on the wall surface is small, that is, the flow does not cause pressure loss so much, the energy loss is alleviated, and the sound due to the collision energy is reduced.

In the above description, the holes 3 are provided in both the laminated filter media 1 and 2 as the void wall surfaces of the non-air-permeable base material 8, but which of the void wall faces of the laminated filter media 1 and 2 is used. Even if it is provided only on one of the non-air-permeable base materials 8, a substantially similar effect can be obtained.

Further, when the holes 3 are provided only on the air inflow side of the air impermeable base material 8 of the cavity surrounding wall surfaces 1 and 2 as shown in FIG. 11, the processing time of the holes 3 and the air permeable base material 8 are reduced. While reducing the amount of waste material, the loss of collision energy (pressure loss) can be efficiently mitigated with respect to the air inflow angle, and the noise can be reduced.

Further, the hole 3 is formed in a long hole shape, and the long hole is formed as shown in FIG.
As shown in FIG. 2, when the air flow is arranged so as to be substantially parallel to the air inflow direction of the air gap peripheral wall surfaces 1 and 2, the air flow flows along the air gap peripheral wall surfaces 1 and 2. Even when the air inflow angle becomes smaller,
That is, even when the angle becomes 45 ° or less, the elongated holes 3a arranged substantially in parallel allow the air to efficiently flow into the adjacent voids 4 and the collision amount colliding with the peripheral wall surfaces 1 and 2 is reduced. Loss (pressure loss) is mitigated and the sound can be reduced.

At this time, the surface of one of the substrates such as fluffed non-woven fabric as the filter media 1 and 2 forming the wall surface around the voids, or the substrate such as fill is anodically and the other surface is cathodic. When the wall surface around the void is configured to have both the given polarities, the particles (dust, etc.) are mechanically collected and the particles are attracted by the electric Coulomb force and the inductive force action. Therefore, it is possible to obtain a comfortable air purifying filter that efficiently removes foreign matters and the like while absorbing collision energy loss (pressure loss) and sound.

Embodiment 3. The third embodiment of the present invention will be described below with reference to FIGS. In the third embodiment, when forming a laminate of the air-permeable base material 7 such as the fluffy nonwoven fabric which is the filter material 1 or 2 of the second embodiment and the non-air-permeable base material 8 such as a film, When the width of the non-breathable substrate 8 is smaller than that of the breathable substrate 7 and the layers are laminated, and the cavity wall surface of the honeycomb structure is formed from this laminate as described in Embodiment 1, the cavity wall surface 1, The non-breathable base material 8 is located only on the air outflow side of No. 2, and the air is allowed to escape from the breathable base material 7 on the air inflow side to the adjacent space.

Next, the operation of the air cleaning filter constructed as described above will be described. First, as shown in FIG. 3, when air flows into the air purifying filter having a honeycomb structure having a large number of voids and an increased trapping area in parallel with the filter void wall faces 1 and 2, it does not collide with the void wall faces. Since the air does not move so much from the hole 3 to the adjacent void core, the void wall surface 1 as a capture surface made of the breathable substrate 7 such as a nonwoven fabric or the non-breathable substrate 8 such as a film, It smoothly flows while capturing foreign particles.

Further, when the air flows into the air cleaning filter at an inclination angle θ as shown in FIG. 4, in other words,
When the air flows in at an inclination angle θ with respect to the void wall surfaces 1 and 2 of the filter medium, the air comes into the void 4 while colliding with the void wall surfaces 1 and 2, but at this time, the air flow inlet side Since there is no non-breathable substrate 8 that does not allow air to pass through, and there is only the breathable substrate 7 that allows air to pass through, this breathable substrate 7
Therefore, as shown in FIG.
F Because the air flows without colliding with the cavity wall surfaces 1 and 2, the collision / bending energy to the wall surface is small, and the flow is performed so that pressure loss does not occur so much, energy loss is alleviated, and in the strongest case, it depends on the collision energy. The sound also becomes smaller.

Fourth Embodiment Embodiment 4 of the present invention will be described below with reference to FIG. It should be noted that FIG. 15 is a schematic configuration cross-sectional view of the indoor unit of the air conditioner. As shown in this figure, in the indoor unit of the air conditioner, the cross-flow blower is provided upstream of the flow of the wind of the cross-flow blower 10. A front / upper surface heat exchanger 11 and a rear surface heat exchanger 12 that are bent and arranged so as to surround 10 and an air passage 13 for indoor air that passes through the front / upper surface and rear surface heat exchangers 11, 12 are formed. And an air passage body, a box body 20 having the air passage body built therein, having air inlets 14 and 15 on the front and upper surfaces and an air outlet 16 on the lower surface, and a front and upper surface heat exchanger 11. A pre-filter 17 provided on the upstream side of the back heat exchanger 12,
The air cleaning filter 18 according to any one of the first to third embodiments, which is bent between the prefilter 17 and the heat exchangers 11 and 12 so as to correspond to the heat exchangers 11 and 12. Further, the hole 3 provided on the wall surface around the void of the bent air cleaning filter 18 is provided in accordance with the inflow angle of air with respect to the normal line of the bent filter.

Next, this operation will be described. First,
As shown in FIG. 15, when the air flows in parallel to the normal line of the air cleaning filter-18, the flow path resistance does not occur in the filter. However, the air is an air cleaning filter
When entering at angles θ1 to θ4 with respect to the normal line of 18, the air collides with the void wall surfaces 1 and 2 and bends, resulting in a pressure loss, and as a result, the air cleaning filter 1 having a large number of voids.
The pressure loss of No. 8 increases, the air volume of the once-through blower is reduced, and the input of the once-through blower motor is increased, resulting in energy loss.

Therefore, as described in the first to third embodiments, the holes 3 are provided in the air-gap surrounding wall surfaces 1 and 2 of the air purifying filter 18 so that a part of the air that collides with the air-gap wall surface escapes to the adjacent air gap space. Reduce pressure loss. At this time, as shown in FIGS. 15 and 16, in accordance with the air inflow angles θ1 to θ4 with respect to the normal line of the air cleaning filter-18, the larger the air inflow angle, the more the holes 3 on the wall surface around the void are made to communicate. Since the occupied area is increased, the pressure loss can be efficiently suppressed.

Further, as an example of a method of increasing the number of holes 3 on the wall surface around the void according to the air inflow angles θ1 to θ4 with respect to the normal line of the air cleaning filter-18, the air cleaning filter-18 is attached to the indoor unit main body. Then, the number, shape, and size of the holes 3 are determined for each inclination or division, and the number, shape, and size of the holes 3 are made the same for each of the inclined or divided filters 18a to 18d. To do. In addition,
By doing so, it is possible to obtain an air conditioner that can be easily manufactured by suppressing a decrease in air flow and an increase in fan motor input while suppressing pressure loss.

Further, it is judged whether or not the air inflow angle with respect to the normal line of the same filter 18a of this air purifying filter-18 is within a preset angle range, and this judgment result is used to determine the set angle range. The number of holes, shape, size, etc. on the wall surface around the void in the area judged to be inside are unified to almost the same specifications, and the number of holes on the wall surface around the void in the area judged to be outside the set angle range. , Shape, size, etc. are unified to each specification. By doing so, it is possible to obtain an air conditioner that can be easily manufactured by efficiently suppressing pressure loss, suppressing a decrease in air flow and increasing fan motor input.

Further, these air cleaning filters 18a
If the thicknesses of 18 to 18d are changed according to the resistance in the air passage 13 so that the passing wind speeds of the heat exchangers 11 and 12 are substantially uniform, the air can be equalized while suppressing the pressure loss. A clean filter is obtained.

[0053]

As described above, in the air cleaning filter according to the present invention and the air conditioner using the filter, in the air cleaning filter having a honeycomb structure having a large number of pores, the wall surface around the pores of the honeycomb structure is formed. Since a hole is provided so that the air gaps adjacent to each other are communicated with each other, even if the air obliquely flows into the air purifying filter, the adjacent air gap can flow from the hole without colliding with the air gap wall surface. Therefore, the energy loss due to collision and bending is alleviated, and in the strongest sense, an air purification filter in which noise due to collision energy is reduced can be obtained.

Further, since the holes are provided only on the air inflow side of the wall surface around the void, it is possible to efficiently alleviate the collision energy loss and reduce the noise while reducing the hole processing time and the waste material. An air purification filter is obtained.

Further, since the hole has a long hole shape and is arranged so as to be substantially parallel to the air inflow direction of the wall surface around the void, even when the air inflow angle becomes small, Since the air is efficiently flown to the adjacent air gap to reduce the amount of collision with the wall surface, an air cleaning filter capable of reducing the loss of collision energy and reducing noise can be obtained.

Further, since the wall surface around the voids is formed of a filter medium containing at least either activated carbon or a photocatalyst, the activated carbon or the photocatalyst deodorizes or decomposes the bad odor of air, resulting in a loss of collision energy. An air purifying filter that obtains comfortable air while reducing noise and noise is obtained.

Further, since the wall surface around the voids is formed of the electret filter medium in which the base material such as the nonwoven fabric or the film is provided with electric polarity, the foreign particles are adsorbed by the mechanical collection and the electrical collection. As a result, a comfortable air purifying filter that efficiently removes foreign matter and the like while reducing pressure loss and noise can be obtained.

Further, the electret filter medium is composed of a laminate of a base material provided with an anodic property and a base material provided with a cathodic property, and the wall surface around the void is constituted so as to have both polarities of the laminate. Therefore, it is possible to obtain a comfortable air purifying filter that efficiently removes foreign matters while reducing pressure loss and noise.

Further, in the air cleaning filter having a honeycomb structure having a large number of voids, and the wall surface around the voids is made of a laminate of a breathable substrate such as a nonwoven fabric and a non-breathable substrate such as a film, Since a hole is provided only on the wall surface of the flexible base material and the air gaps adjacent to each other are communicated with each other through the hole through the air-permeable base material, the pressure loss is efficiently reduced with a small amount of material, and the sound is reduced. A viable air purification filter is obtained.

Further, since the holes are provided only on the air inflow side of the non-air-permeable base material, the amount of material required is less, and the loss of collision energy is efficiently reduced while reducing the hole processing time and waste materials. An air purifying filter that can be softened to reduce noise is obtained.

Further, since the hole has a long hole shape and is arranged so as to be substantially parallel to the air inflow direction of the wall surface around the void, a small amount of material is used even when the air inflow angle is small. Thus, the air is efficiently flown to the adjacent space to reduce the amount of collision with the wall surface, so that the air cleaning filter capable of reducing the loss of collision energy and reducing the noise can be obtained.

Further, since one of the base materials of the laminate is provided with an anodic property and the other base material is provided with a cathodic property, the wall surface around the voids is configured to have both polarities. Since it collects foreign particles by mechanical collection and electric collection, it is possible to obtain a comfortable air purification filter that efficiently removes foreign particles while reducing pressure loss and noise with less material. To be

Further, in the air cleaning filter having a honeycomb structure having a large number of voids, and the wall surface around the voids is a laminate of a breathable substrate such as a nonwoven fabric and a non-breathable substrate such as a film, A base material is provided only on the air outflow side of the void surrounding wall surface, and the adjacent air gaps are communicated from the air permeable base material on the air inflow side. Therefore, with less material, hole processing is unnecessary, A comfortable and economical air purifying filter that efficiently removes foreign substances while reducing pressure loss and noise can be obtained.

Further, since the air cleaning filter according to any one of claims 1 to 11 is provided in the air passage of the indoor unit of the air conditioner, the loss of energy of collision of air with the filter is mitigated, and the noise is reduced. An air conditioner that can be made smaller can be obtained.

Further, a plurality of heat exchangers that are bent so as to surround the blower, and an air cleaner having a honeycomb structure that is bent at the upstream side corresponding to these heat exchangers and has a large number of voids. In an air conditioner including a filter, the air purification filter has holes formed in the wall surface around the void according to an inflow angle of air with respect to each normal line of each of the bent filters, and the holes are adjacent to each other by this hole. Since the air gaps are communicated with each other, it is possible to obtain an air conditioner capable of efficiently reducing the loss of energy of collision of air with the filter and reducing noise.

Further, since the hole is provided so that the occupied area thereof becomes larger as the air inflow angle with respect to each normal line of each of the bent filters becomes larger, the collision energy of the air with respect to the filter can be further improved. It is possible to obtain an air conditioner that can reduce the loss and reduce the sound.

Further, since the holes are provided with the same specifications for each of the bent filters, the air conditioner capable of reducing the loss of energy of collision of air with the filter and reducing the noise with a filter having good productivity. Is obtained.

Further, since the thickness of each of the bent filters is set according to the resistance in the air passage so that the air velocity passing through each of the heat exchangers becomes substantially uniform, it is possible to suppress a decrease in air flow and motor input. However, an air conditioner that makes the wind speed uniform can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an air cleaning filter according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view of the air cleaning filter according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing the flow of air when the air flows vertically to the air cleaning filter according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing the flow of air when the air obliquely flows with respect to a conventional air purifying filter without holes.

FIG. 5 is a cross-sectional view showing the flow of air when the air obliquely flows to the air purifying filter with holes according to the first embodiment of the present invention.

FIG. 6 is a graph showing the relationship of the rate of increase in pressure loss with respect to the air inflow angle between the air cleaning filter of the present invention and the conventional filter.

FIG. 7 is an enlarged perspective view of an air cleaning filter portion having holes only on the air inflow side of the wall surface of the void according to the first embodiment of the present invention.

FIG. 8 is an enlarged perspective view of a portion of an air cleaning filter having elongated holes in the wall surface of the void according to the first embodiment of the present invention.

FIG. 9 is a graph showing the dust collection efficiency of the air purification filter according to the first embodiment of the present invention.

FIG. 10 is a schematic perspective view of an air cleaning filter according to a second embodiment of the present invention.

FIG. 11 is a schematic perspective view of an air cleaning filter having holes only on the air inflow side of the void wall surface according to the second embodiment of the present invention.

FIG. 12 is a perspective view of a schematic configuration of an air cleaning filter having elongated holes on a wall surface of a void according to a second embodiment of the present invention.

FIG. 13 is a schematic perspective view of an air cleaning filter according to a third embodiment of the present invention.

FIG. 14 is a cross-sectional view showing the flow of air when the air obliquely flows to the air cleaning filter according to the third embodiment of the present invention.

FIG. 15 is a schematic perspective view of an air conditioner having an integrated filter according to Embodiment 4 of the present invention.

FIG. 16 is a perspective view of a schematic configuration of an air conditioner having a split filter according to Embodiment 4 of the present invention.

FIG. 17 is a schematic perspective view of a conventional air cleaning filter.

[Description of Reference Signs] 1 filter material for corrugated wall surface, 1a electret corrugated wall surface filter material 2 filter material for flat plate void surface, 2a electret flat plate wall material, 3 holes, 3a oblong hole, 4
Voids, 7 Breathable base materials such as non-woven fabric, 8 Non-breathable base materials such as 8 files, 10 Cross-flow blowers, 11 Front heat exchangers, 12 Back heat exchangers, 13 Air passages, 14
Front inlet, 15 Top inlet, 16 Outlet, 18, 18a, 18b, 18c, 18d Air cleaning filter, 20 Box.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F24F 13/28 F24F 1/00 371A (72) Inventor Toshiaki Yoshikawa 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Sanryu Electric Co., Ltd. F term (reference) 3L051 BB01 BB03 4D019 AA01 BA13 BB02 BB03 BB10 BC01 BC05 BC07 CA01 4D054 AA11 BC06 BC10 BC16 4D058 JA33 JA38 JB14 JB24 JB25 JB29 JB39 JB41 SA20 TA02 TA06

Claims (16)

[Claims] 1. An air purifying filter having a honeycomb structure having a large number of voids, characterized in that holes are provided on a wall surface around the voids of the honeycomb structure, and the voids adjacent to each other are communicated by the holes. Air cleaning filter. 2. The air cleaning filter according to claim 1, wherein the hole is provided only on the air inflow side of the wall surface around the void. 3. The hole according to claim 1, wherein the hole has an elongated shape, and the elongated hole is arranged so as to be substantially parallel to the air inflow direction of the wall surface around the void. Air purifying filter described in. 4. The air cleaning filter according to claim 1, wherein the wall surface around the voids is formed of a filter material containing at least either activated carbon or a photocatalyst. 5. The air cleaning filter according to any one of claims 1 to 3, wherein the wall surface around the voids is formed of an electret filter medium in which a base material such as a nonwoven fabric or a film is provided with electric polarity. . 6. The electret filter medium is composed of a laminate of a base material provided with an anodic property and a base material provided with a cathodic property, and the wall surface around the void is configured so as to have both polarities of the laminate. The air cleaning filter according to claim 5, wherein 7. An air purifying filter having a honeycomb structure, which has a large number of voids, and a wall surface around the voids is made of a laminate of a breathable substrate such as a nonwoven fabric and a non-breathable substrate such as a film. An air purifying filter, characterized in that a hole is provided only on the wall surface of the permeable base material, and the air gaps adjacent to each other are communicated from the hole through the air permeable base material. 8. The air cleaning filter according to claim 7, wherein the holes are provided only on the air inflow side of the non-air-permeable base material. 9. The method according to claim 7, wherein the hole has an elongated hole shape, and the elongated hole is arranged so as to be substantially parallel to an air inflow direction of the wall surface around the void. Air purifying filter described in. 10. The cavity peripheral wall surface is configured so that one of the base materials of the laminate is provided with an anodic property and the other base material is provided with a cathodic property, and both of the polarities are provided. The air cleaning filter according to any one of claims 7 to 9, which is characterized. 11. An air purifying filter having a honeycomb structure, which has a large number of voids, and a wall surface around the voids is made of a laminate of a breathable substrate such as a nonwoven fabric and a non-breathable substrate such as a film. An air purifying filter, wherein a porous base material is provided only on the air outflow side of the wall surface around the void, and the air permeable base material on the air inflow side communicates with the adjacent air gap. 12. An air conditioner, wherein the air cleaning filter according to any one of claims 1 to 11 is provided in an air passage of an indoor unit of the air conditioner. 13. A plurality of heat exchangers, which are bent so as to surround a blower, and an air cleaner having a honeycomb structure, which is bent and provided on the upstream side corresponding to these heat exchangers and has a large number of voids. In the air conditioner including a filter, the air cleaning filter has holes in the wall surface around the void according to an inflow angle of air with respect to each normal line of each bent filter, and the holes are adjacent to each other by this hole. An air conditioner characterized by communicating the air gaps. 14. The air according to claim 13, wherein the hole is provided so that the larger the inflow angle of air with respect to each normal line of each of the bent filters, the larger the occupied area thereof becomes. Harmony machine. 15. The air conditioner according to claim 13, wherein the holes are provided with the same specifications for each of the bent filters. 16. The thickness of each of the bent filters is
The air conditioner according to any one of claims 13 to 15, wherein the air conditioner is provided according to the resistance in the air passage so that the air velocity passing through each heat exchanger is substantially uniform.