JP2021137760A - Air cleaning filter - Google Patents

Abstract

To provide an air cleaning filter, in which performance of the air cleaning filter is suppressed from deteriorating and an appearance quality is improved.SOLUTION: A reinforcement part 32 provided along a surface of a net through which airstream passes and a frame part 33 connecting a peripheral edge part of the net to an end part of the reinforcement part are made of resin materials and are subjected to injection molding. The net 31 is insert-molded into the reinforcement part 32 and the frame part 33 when the reinforcement part 32 and the frame part 33 are subjected to injection molding. The frame part 33 has: a leeward-side frame part 34 provided along a surface at a leeward side in the net 31; an annular inner protruding part 35 protruding from an inner edge in the leeward-side frame part 34 to a windward side in the net 31 through the net 31; and an outer protruding part 36 protruding from the leeward-side frame part 34 to a windward side in the net, with a predetermined distance outside in the inner protruding part 35. A peripheral edge of the net 31 is arranged between the inner protruding part 35 and the outer protruding part 36.SELECTED DRAWING: Figure 8

Description

The present invention relates to, for example, an air purifying filter used in an air conditioner.

Conventionally, this type of air purification filter is composed of a flexible net through which an air flow passes, a reinforcing portion, and a frame portion. The reinforcing portion includes a large number of rod-shaped horizontal reinforcing portions extending in the horizontal direction and a large number of rod-shaped vertical reinforcing portions extending in the vertical direction perpendicular to the horizontal direction. The frame portion is configured by being connected to the reinforcing portion. The net is insert-molded into the reinforcing portion and the frame portion. (Note that there is the following Patent Document 1 as a prior document related to this).

Japanese Unexamined Patent Publication No. 2019-060583

The problem with such a conventional air purifying filter is that due to variations in the external dimensions of the net, when the net is small, there is a defect that a region that does not pass through the net occurs in the air flow passage region, and when it is large, there is a defect. This is because the flexible net peripheral end portion is deformed due to the large engagement margin of the frame portion during insert molding, and the net appears on the appearance side of the frame portion, resulting in an appearance defect.

Then, in order to achieve this object, the present invention relates to a net through which an air flow passes, a lattice-shaped reinforcing portion provided along the surface of the net, a peripheral edge portion of the net, and the reinforcing portion. The reinforcing portion and the frame portion are injection-molded products made of a resin material, and the net is fixed to the reinforcing portion and the frame portion. The net, the reinforcing portion, and the frame portion are insert molded products, and the leeward side frame portion provided along the leeward side surface of the net and the inner edge of the leeward side frame portion via the net. An annular inward projecting portion of the net projecting to the windward side and an outward projecting portion of the net projecting from the leeward side frame portion to the windward side at a predetermined distance to the outside of the medial projecting portion. The peripheral end portion of the net is provided with an air cleaning filter characterized by being arranged between the inner protruding portion and the outer protruding portion, whereby the intended purpose is Is to be achieved.

According to the present invention, even if the external dimensions of the net vary, it is possible to obtain the effect of preventing the performance of the air purifying filter from deteriorating and the effect of improving the appearance quality.

External perspective view of the dehumidifying device according to the first embodiment of the present invention. Interior development of the dehumidifier Schematic cross-sectional view of the dehumidifier AA Schematic cross-sectional view of the dehumidifier BB External perspective view of the radiator of the dehumidifier External perspective view of the heat absorber of the dehumidifier External perspective view and detailed external perspective view of the suction port of the dehumidifier CC sectional view of the suction port of the dehumidifier CC sectional view of the suction port of the second embodiment of the present invention

Hereinafter, examples of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an external perspective view of the dehumidifying device according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view of the dehumidifying device according to the first embodiment of the present invention. Note that FIGS. 1 and 2 are views of the dehumidifying device viewed from the rear surface side. 3 and 4 are schematic cross-sectional views of the dehumidifying device according to the first embodiment of the present invention. Note that FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a cross-sectional view taken along the line BB of FIG. For convenience of explanation, the following may be described below. That is, as shown in FIG. 1, the vertical direction in the state where the dehumidifying device 100 is installed may be described as the vertical direction. Similarly, as shown in FIG. 1, the upper surface of the dehumidifying device 100 in the state where the dehumidifying device 100 is installed may be referred to as a “top surface”. Similarly, as shown in FIG. 1, the front surface of the dehumidifying device 100 in the state where the dehumidifying device 100 is installed may be described as "front surface", and the rear surface of the dehumidifying device 100 may be described as "rear surface". be.

As shown in FIGS. 1, 2, 3, and 4, the main body case 1 has a horizontally long substantially rectangular parallelepiped shape. Specifically, the main body case 1 has a shape in which the size of the horizontal direction W is larger than the size of the depth direction D and the vertical direction H, and the rear surface of the main body case 1 (one in the depth direction of the main body case 1). A suction port 2 is arranged on the side surface). An air outlet 3 is arranged at the upper part of the main body case 1. The air outlet 3 has a horizontally long square shape and is open to the upper side and the rear surface of the main body case 1. A louver 4 for changing the wind direction from the air outlet 3 is provided on the rear surface side of the top surface of the main body case 1 (one side surface side in the depth direction of the main body case 1), and the front side of the top surface of the main body case 1 An operation unit 5 is provided (on the other side in the depth direction of the main body case). The operation unit 5 has a plurality of switches for turning on / off the power, changing the operation mode, and the like.

The main body case 1 includes a heat pump 6, a blower unit 7, a dehumidifying rotor unit 8, a mounting base 9, a water storage tank unit 10, and a control unit 11.

The heat pump 6 has a configuration in which a compressor 12, a radiator 13, an expander 14, and a heat absorber 15 are sequentially connected in an annular shape to circulate a refrigerant.

The compressor 12 is arranged on the left side of the main body case 1 (one side surface side in the lateral direction (longitudinal direction) of the main body case) when viewed from the front side of the main body case 1. The compressor 12 is fixed on the bottom surface of the main body case 1.

The radiator 13 is arranged on the rear surface side of the main body case 1 (one side surface side in the depth direction of the main body case). The radiator 13 is arranged on the bottom surface of the main body case 1 so that the gap between the adjacent heat radiating fins and the heat radiating fins in the radiator 13 described later faces the suction port 2 of the main body case 1.

FIG. 5 is an external perspective view of the radiator of the dehumidifying device according to the first embodiment of the present invention. Note that FIG. 5 is a view of the radiator of the dehumidifying device as viewed from the rear surface side.

As shown in FIG. 5, the radiator 13 has a large number of heat radiating fins 13a and a connecting pipe 13b for connecting a large number of fins.

The heat radiation fin 13a has a vertically long square plate shape and is made of aluminum. A large number of heat radiating fins 13a are arranged so that the surfaces of the adjacent heat radiating fins 13a face each other. The gap between the adjacent heat radiation fins 13a and the heat radiation fins 13a serves as an air passage.

The connecting pipe 13b has a cylindrical shape and is made of copper. The cylindrical connecting pipe 13b is provided in a plurality of stages in the longitudinal direction of the heat radiation fins 13a, and is bent in a meandering shape a plurality of times. A large number of heat radiation fins 13a are fixed to the straight pipe portion of the connecting pipe 13b. A large number of heat radiation fins 13a are laminated with a predetermined interval in the direction of the central axis of the straight pipe portion of the connecting pipe 13b.

As shown in FIGS. 2 and 4, the heat absorber 15 is arranged on the right side of the main body case 1 (the other side surface side in the lateral direction of the main body case 1) when viewed from the front surface of the main body case 1, and is described later. The central axis of the air passage, which is a gap between the adjacent heat absorbing fins 15a and the heat absorbing fins 15a in 15, is fixed to the mounting base 9 so as to extend in the left-right direction in the main body case 1.

FIG. 6 is an external perspective view of the heat absorber of the dehumidifier according to the first embodiment of the present invention. Note that FIG. 6 is a view of the radiator of the dehumidifying device as viewed from the left side of the main body case.

As shown in FIG. 6, the endothermic device 15 has a large number of heat absorbing fins 15a and a connecting pipe 15b for connecting a large number of fins.

The endothermic fin 15a has a vertically long square plate shape, and the material is aluminum. A large number of endothermic fins 15a are arranged so that the surfaces of the adjacent endothermic fins 15a face each other. The gap between the adjacent heat absorbing fins 15a and the heat absorbing fins 15a serves as an air passage.

The connecting pipe 15b has a cylindrical shape and is made of copper. The cylindrical connecting pipe 15b is provided in a plurality of stages in the longitudinal direction of the endothermic fins 15a, and is bent in a meandering shape a plurality of times. A large number of endothermic fins 15a are fixed to the straight pipe portion of the connecting pipe 15b. A large number of endothermic fins 15a are laminated with a predetermined interval in the direction of the central axis of the straight pipe portion of the connecting pipe 15b.

As shown in FIGS. 2 and 4, the blower portion 7 is arranged so as to face the radiator 13 and is fixed to the mounting base 9. The blower portion 7, the radiator 13, and the suction port 2 of the main body case 1 are arranged in a straight line in the depth direction of the main body case 1. The blower portion 7 has a motor 16, a fan 17 rotated by the motor 16, and a casing 18 surrounding the fan 17.

The fan 17 is a turbofan and has a main plate 17a, a large number of blades 17b, and a suction ring 17c.

The main plate 17a has a substantially disk shape, and the central portion has a downwardly convex shape, and a tubular rotating shaft fixing portion 17d is provided at the central portion. The rotary shaft fixing portion 17d has a structure in which the rotary shaft of the motor 16 is inserted and can be fixed to the rotary shaft. The peripheral edge of the main plate 17a has a plurality of blades 17b extending downward from the main plate 17a, and the blades 17b have a wing shape in horizontal cross section. The peripheral end of the main plate 17a of the blade 17b has a shape facing in the direction opposite to the rotation direction of the fan 17. An annular suction ring 17c is provided at the lower end of the plurality of blades 17b.

The casing 18 has an intake port 18a on the lower surface and a discharge port 18b on the upper surface. When the fan 17 is rotated by the motor 16, the air sucked from the intake port 18a of the casing 18 flows into the fan 17 through the suction ring 17c of the fan 17. The air that has flowed in is blown out in the radial direction of the fan 17 along the blades 17b, and is blown to the air outlet 3 of the main body case 1 through the discharge port 18b of the casing 18.

The dehumidifying rotor portion 8 is arranged between the blower portion 7 and the heat absorber 15. The heat absorber 15, the dehumidifying rotor portion 8, and the blower portion 7 are arranged in a straight line in the lateral direction of the main body case 1. The dehumidifying rotor portion 8 includes a dehumidifying rotor 19, a rotor frame 20, a driving portion 21, and a heating portion 22.

The dehumidifying rotor 19 has a disk body as a whole. This disk body has a vent body provided in a circular ring. The vent is a zigzag second band (not shown) between the two first strips (not shown), which is spirally formed from the inner circumference to the outer circumference in a circular ring. It is constructed into a ventilation structure by winding it around. The first band and the second band are made of heat-resistant fibers, and a hygroscopic substance such as zeolite is bonded to the surface thereof with a silica-based adhesive, for example.

The dehumidifying rotor 19 is formed on a disk body and is rotatably erected on the rotor frame 20 so that the central axis extends in the left-right direction in the main body case 1, and is rotated by the drive portion 21. The rotor frame 20 is fixed to the mounting base 9. The dehumidifying rotor 19 has a moisture absorbing portion 19a that adsorbs moisture from the air and a moisture releasing portion 19b that discharges the moisture into the air.

The heating portion 22 is installed so as to face the dehumidifying portion 19b of the dehumidifying rotor 19. The heating portion 22 is arranged on the upstream side of the dehumidifying portion 19b of the dehumidifying rotor 19 in the air passage described later.

The mounting base 9 has a box shape in which the bottom surface side and the front surface side surface of the main body case 1 are open, and has a mounting plate 9a and support legs 9b.

The mounting plate 9a has a rectangular substantially plate shape, and a blower portion 7, a dehumidifying rotor portion 8, and a heat absorber 15 are fixed to the upper surface thereof.

The support legs 9b are three rectangular plates extending downward from the peripheral edge of the mounting plate 9a, and extending downward from the rear surface side, the right surface side, and the left surface side of the main body case 1 on the peripheral edge of the mounting plate. The plates are integrally formed. The support legs 9b have a space portion 9c having a substantially rectangular parallelepiped shape between the mounting plate 9a and the bottom surface of the main body case 1. The height of the space portion 9c is approximately the height of the support legs 9b, and the water storage tank portion 10 is mounted on the space portion 9c.

The water storage tank portion 10 is arranged in the space portion 9c below the main body case 1 and is detachable from the front surface of the main body case 1 (one side surface in the depth direction of the main body case). The attachment / detachment direction of the water storage tank portion 10 is the front-rear direction (depth direction of the main body case) in the main body case 1. A blower portion 7, a dehumidifying rotor portion 8, and a heat absorber 15 are arranged above the water storage tank portion 10. The water storage tank portion 10 has a flat box-shaped tank 10a having an open top surface and a funnel-shaped water collecting cover 10b. The water collecting cover 10b is detachably provided on the upper part of the tank 10a. That is, the heat absorber 15 causes dew condensation, and the dew condensation water is collected by the funnel-shaped water collecting cover 10b and flows into the tank 10a.

The control unit 11 is arranged on the right side of the main body case 1 (one side surface side in the lateral direction of the main body case 1) when viewed from the front side of the main body case 1. The control unit 11 is fixed on the bottom surface of the main body case 1. The control unit 11 controls the motor 16 of the blower unit 7, the compressor 12, the drive portion 21 and the heating portion 22 of the dehumidifying rotor unit 8 based on the switch of the operation unit 5 pressed by the user.

A first air passage 23 and a second air passage 24 are provided in the main body case 1.

The first air passage 23 sucks air from the suction port 2 by the air blower 7 and supplies it in this order of the radiator 13, the heating part 22, the moisture release part 19b, the heat absorber 15, and the moisture absorption part 19a, and supplies the air through the air blower 7. It is an air passage that discharges from the air outlet 3.

The second air passage 24 is an air passage that sucks air from the suction port 2 by the air blower 7, supplies the air to the radiator 13, and discharges the air from the air outlet 3 through the air blower 7.

More specifically, in the first air passage 23, the indoor air warmed by the radiator 13 is further warmed by the heating portion 22 and supplied to the dehumidifying portion 19b of the dehumidifying rotor 19. In the moisture-releasing portion 19b, the moisture adsorbed by the moisture-absorbing portion 19a moves to the moisture-releasing portion 19b by the rotational drive of the dehumidifying rotor 19, and is released to the air supplied by the heating of the heating portion 22. This high-humidity air is supplied to the heat absorber 15 and is cooled to cause dew condensation, and moisture is taken out as water droplets. After that, the cooled air is supplied to the moisture absorbing portion 19a of the dehumidifying rotor 19, and the moisture in the air is further adsorbed by the moisture absorbing portion 19a to become dry air. Further, since the heat of adsorption is generated when the moisture is adsorbed, the indoor air is sucked into the blower unit 7 in a state where the humidity is reduced and the temperature is raised, and the air is blown into the room from the air outlet 3. The water condensed in the heat absorber 15 drops downward as water droplets and flows into the tank 10a of the water storage tank portion 10.

In the second air passage 24, the indoor air warmed by the radiator 13 is sucked into the air blower portion 7 and blown into the room from the air outlet 3. That is, the air passing through the first air passage 23 and the air passing through the second air passage 24 are in a mixed state at the air blowing unit 7, and are blown out from the air outlet 3 by the air blowing unit 7.

As shown in FIGS. 7 and 8, an air purifying filter 30 is fixed to the suction port 2. The air purifying filter 30 may be detachably attached to the suction port 2.
The air purifying filter 30 has a net 31, a reinforcing portion 32, and a frame portion 33. The reinforcing portion 32 and the frame portion 33 are made of a resin material and are injection-molded, and the net 31 is insert-molded into the reinforcing portion 32 and the frame portion 33 at the time of injection molding of the reinforcing portion 32 and the frame portion 33. The reinforcing portion 32 and the frame portion 33 are injection-molded products made of a resin material, and the net 31 is fixed to the reinforcing portion 32 and the frame portion 33. , It is an insert molded product.

The net 31 has a large number of small openings through which the air flow passes. As an example, a plurality of resin fibers arranged in parallel at a certain interval are woven in a vertical grid pattern, and have a flexible structure.

The reinforcing portion 32 has a lattice shape, is provided along the surface of the net 31, and is fixed to the net 31. The reinforcing portion 32 is fixed to the net 31 by entering the opening of the net 31 and solidifying at the time of injection molding.

The frame portion 33 connects the peripheral edge portion of the net 31 and the end portion of the reinforcing portion 32. The frame portion 33 is fixed to the net 31 by entering the opening at the end of the net and solidifying at the time of injection molding. The frame portion 33 is fixed to the reinforcing portion 32 by being connected to the reinforcing portion 32 and solidifying at the time of injection molding.

Here, an example of insert molding will be described.

First, the net 31 is attached to the cavity type (fixed side) when the air purifying filter is injection-molded. The cavity type (fixed side) is provided with a plurality of needle-shaped protrusions, and the net 31 is inserted into these protrusions, and the net 31 is attached to the cavity type (fixed side). When the net 31 is attached to the cavity type (fixed side), a part of one side surface of the net 31 and a part of the cavity type (fixed side) come into contact with each other.

Next, the core type (movable side) moves to the cavity type (fixed side) side. At this time, a part of the core type (movable side) comes into contact with a part of the other side surface of the net 31. There is a partial gap between the cavity type (fixed side) that is not in contact with the net 31 and the core type (movable side) that is not in contact with the net 31.

Next, the resin is poured into the gap between the cavity type (fixed side) and the core type (movable side). The resin that has flowed into the gap between the cavity type (fixed side) and the core type (movable side) becomes the reinforcing portion 32 and the frame portion 33. At this time, a part of the resin that has flowed into the gap between the cavity type (fixed side) and the core type (movable side) also enters the opening of the net 31.

Next, after the resin has hardened, the core mold (movable side) moves together with the air purifying filter and separates from the cavity mold (fixed side).

Finally, the air purifying filter is pushed out from the core mold (movable side) and removed by an extrusion pin protruding from the core mold (movable side).

Further, in the case of a suction port, the cavity type (fixed side) is generally on the windward side (exterior side), and the core type (movable side) is on the leeward side (interior side).

The frame portion 33 of the air purifying filter has a leeward side frame portion 34, an inner protruding portion 35, and an outer protruding portion 36.

The leeward side frame portion 34 is provided along the leeward side surface of the net 31.

The inner projecting portion 35 is a square ring and projects from the inner edge of the leeward side frame portion 34 to the windward side of the net 31 via the net 31.

The outer protruding portion 36 has a predetermined distance to the outside of the inner protruding portion 35, and protrudes from the leeward side frame portion 34 to the leeward side of the net 31.

The feature of this embodiment is that the peripheral end portion of the net 31 is arranged between the inner protruding portion 35 and the outer protruding portion 36.

As a result, when the outer dimensions of the net 31 vary and are shorter than the normal dimensions, the peripheral end of the net 31 is sandwiched between the inner protruding portion 35 region and the leeward side frame portion 34, so that the net 31 always passes through the net 31. It has the effect of sucking air into the body.

On the contrary, due to the variation in the external dimensions of the net 31, the peripheral end portion of the net 31 is sandwiched between the region between the inner protruding portion 35 and the outer protruding portion 36 and the leeward side frame portion 34 even when the net 31 is longer than the normal dimension. ..

Further, in the region between the inner protrusion 35 and the outer protrusion 36, the cavity type (fixed side) and the vicinity of the peripheral end of the net 31 come into contact with each other to position the net 31. As a result, the net does not protrude in the appearance region outside the outer protrusion 36, but rises in the region between the inner protrusion 35 and the outer protrusion 36, which is relatively recessed from the appearance region. 31 It has the effect of making the peripheral end less noticeable. Therefore, even if the external dimensions of the net 31 vary, it is possible to prevent the performance of the air purifying filter from deteriorating and improve the appearance quality.

Further, inside the outer protruding portion 36, there is a central protruding portion 37 protruding to the windward side of the net 31 from the inner edge of the leeward side frame portion 34 via the net 31. The central protrusion 37 is connected to the outer protrusion 36 and has a predetermined distance from the inner protrusion 35. The dimension of the central protrusion 37 protruding from the leeward frame 34 is smaller than the dimension of the outer protrusion 36 protruding from the leeward frame 34.

As a result, due to variations in the external dimensions of the net 31, when the net 31 is longer than the normal dimensions, the peripheral end of the net 31 is sandwiched between the central protrusion 37 and the leeward frame portion 34, and the inner protrusion 35 and the outer protrusion 35. In the region between the portions 36, the cavity-side mold and the vicinity of the peripheral end of the net 31 come into contact with each other to position the net 31. Therefore, the peripheral end portion of the net 31 does not protrude in the appearance region outside the outer protrusion 36, but rises in the central protrusion 37 region which is relatively recessed from the appearance region, but the central protrusion 37 protrudes. This makes it difficult for the peripheral end of the net 31 to stand out, so that the peripheral end of the net 31 becomes less noticeable when viewed from the outside. Therefore, even if the external dimensions of the net 31 vary, the appearance quality can be further improved.

(Embodiment 2)
The same components as those in FIGS. 1 to 7 are designated by the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 9, in the shape of the leeward side frame portion 34 on the leeward side of the net of the outer protruding portion 36 and the central protruding portion 37, the leeward side frame recessed portion 38 recessed on the leeward side of the net 31 is provided. ..

As a result, in the outer protruding portion 36 and the central protruding portion 37, the leeward side frame portion 34 on the leeward side of the net is recessed on the leeward side of the net 31 according to the amount of protrusion, so that the wall thickness of the frame portion 33 is made uniform. , The amount of shrinkage due to resin molding is also made uniform. As a result, since it has an action of preventing sink marks and deformation on the appearance side including the outer protrusion 36 and the center protrusion 37, the appearance quality can be further improved.

The air purifying filter according to the present invention is useful as a blower or the like used for air purifying because it can prevent deterioration of the performance of the air purifying filter and improve the appearance quality.

1 Main body case 2 Suction port 3 Air outlet 4 Louver 5 Operation part 6 Heat pump 7 Blower part 8 Dehumidifying rotor part 9 Mounting base 9a Mounting plate 9b Support leg 9c Space part 10 Water storage tank part 10a Tank 10b Water collecting cover 11 Control part 12 Machine 13 Heat radiator 13a Heat dissipation fin 13b Connecting pipe 14 Expander 15 Heat absorber 15a Heat absorbing fin 15b Connecting pipe 16 Motor 17 Fan 17a Main plate 17b Blade 17c Suction ring 17d Rotating shaft fixing part 18 Casing 18a Intake port 18b Dehumidifier Moisture absorption part 19b Moisture release part 20 Rotor frame 21 Drive part 22 Heating part 23 1st air passage 24 2nd air passage 30 Air purifying filter 31 Net 32 Reinforcement part 33 Frame part 34 Downwind side frame part 35 Inner protrusion 36 Outer protrusion 37 Central protrusion 38 Downwind frame recess

Claims (3)

The net through which the air flow passes and
With a grid-shaped reinforcing portion provided along the surface of the net,
It has a peripheral edge portion of the net and a frame portion connecting the end portions of the reinforcing portion.
The reinforcing portion and the frame portion are injection-molded products made of a resin material.
The net is fixed to the reinforcing portion and the frame portion, and the net, the reinforcing portion, and the frame portion are insert molded products.
The frame portion
A leeward frame portion provided along the leeward surface of the net,
An annular inner protrusion protruding from the inner edge of the leeward frame portion to the leeward side of the net via the net,
It has a predetermined distance to the outside of the inner projecting portion, and has an outer projecting portion projecting from the leeward side frame portion to the leeward side of the net.
An air purifying filter characterized in that the peripheral end portion of the net is arranged between the inner protruding portion and the outer protruding portion. Inside the outer protrusion, there is a central protrusion that projects from the inner edge of the leeward frame portion to the windward side of the net via the net.
The central protrusion is connected to the outer protrusion and has a predetermined distance from the inner protrusion.
The dimension of the central protrusion protruding from the leeward frame portion is
The air cleaning filter according to claim 1, wherein the outer protruding portion is smaller than the dimension protruding from the leeward side frame portion. 1. Air purifying filter.

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