JP6940453B2 - Blower with filter - Google Patents

Description

The present invention relates to a blower with a filter for a vehicle air conditioner.

For example, Patent Document 1 discloses a blower device for a vehicle air conditioner in which a filter is arranged in an internal space through which air flows.

The filter of the vehicle air conditioner described in Patent Document 1 is intended to provide an air conditioner having a structure that supports a filter having a frameless structure, and is a mountain valley as shown in FIGS. 3 and 4. Both edges of the filter medium 11 of the filter 10 woven in a shape are supported by the packing (support member) 12, and it is said that the cost can be lower than that of supporting all four sides with a frame.

FIG. 3 is a conceptual diagram of the vehicle air conditioner described in Patent Document 1, and FIG. 4 is a diffusion decomposition perspective view of the filter shown in FIG.

Further, the filter described in Patent Document 2 prevents poor adhesion between the pleated filter medium and the frame material, deterioration of filter performance and poor appearance due to adhesive misalignment, improves yield, facilitates process, increases line speed, and manufacture time. As shown in FIG. 5, the dimensional relationship between the filter filter medium 20 folded in a mountain valley shape and the support member 21 that supports both ends of the filter filter medium 20 is disclosed.

It is said that air leakage can be prevented by configuring the mountain valley-shaped peak portion of the filter filter medium 20 so as not to protrude from the long side of the support member 21. Theoretically, it is sufficient to say that "the peak (valley bottom) does not protrude from the long side of the support member 21", but in the actual product, it is necessary to consider the dimensional tolerance, so the width of the filter support member 21 should be increased. It is suggested that the filter medium 20 is made larger than the dimensional width of the peaks and valleys.

That is, it is practically necessary to provide predetermined margins M1 and M2 (margin white) from the peak / bottom of the mountain valley of the filter filter medium 20 to the long side of the support member 21.

Reference numeral 22 denotes a presser, and FIG. 5 is a diagram showing a prior art of the filter described in Patent Document 2.

Here, when a filter in which only both edges are supported by support members as shown in Patent Document 1 is arranged upstream of the suction port (bell mouth) of the blower, air may leak from the side surface without the support member. There is.

This is because the valley bottom of the mountain valley of the filter filter medium 20 is located above the long side of the lower end of the support member 21 due to the presence of the margin M2. It is necessary to prevent air leakage while maintaining the creases of the peaks and valleys of the filter filter medium 20 with the support members 21 on the two sides.

FIG. 6 is a partial external perspective view of a blower with a filter used in the air conditioner for a vehicle which is a premise of the present invention, and FIG. 7 is a state in which the intake portion is removed from the blower with a filter shown in FIG. It is an external perspective view which shows.

As shown in FIG. 6, an intake unit 150 for introducing outside air or inside air into the interior of the vehicle is mounted on the upper side of the blower device 100-1 with a filter. Inside the intake unit 150, an intake door for changing the ratio of the outside air to the inside air to be introduced is arranged (not shown). The filter 103 is inserted into the filter insertion port 102 of the storage portion 101 in the direction of arrow P8. When the sirocco fan 105 is rotated by the drive of the motor 104 (not shown), the outside air and / or the inside air is taken in from the outside air introduction port 151 and / or the inside air introduction port 152 provided in the intake portion 150 according to the position of the intake door. Then, it flows through the inside of the intake portion 150, reaches the air suction port, and is sucked into the sirocco fan 105.

The filter mounting process of the filter-equipped blower described in Patent Document 3 is disclosed. The filter 103 is inserted from the filter insertion port 102 of the storage portion 101 of the blower device 100-1 with a filter shown in FIG. 7 along the crease of the valley fold and diagonally downward in the arrow P1 direction. When the front end 103t of the filter 103 reaches the guide wall 101g (see FIG. 6) of the storage portion 101, the rear end 103t is lowered in the direction of arrow P2. Finally, it is inserted along the arrow P3 direction, that is, along the expanding direction (substantially horizontal direction in FIG. 6) of the bottom surface 101f (see FIG. 6) of the storage portion 101, and the front end 103t of the filter 103 reaches the front end 101t of the storage portion 101. This completes the storage of the filter 103. In the figure, 104 is a motor, 105 is a sirocco fan rotated by the motor 104, and 106 is an air suction hole. The suction direction of the air suction hole 106 is from top to bottom.

Japanese Unexamined Patent Publication No. 8-215528 Japanese Unexamined Patent Publication No. 2009-220024 Japanese Unexamined Patent Publication No. 2012-236437

However, when the sirocco fan 105 rotates and air suction is started through the air suction port 106 in a state where the filter 103 is inserted so as to reach the front end 103t of the storage portion 101 in the direction of arrow P3 as shown in FIG. Not only the air flow that passes through the filter medium 103e of the filter as shown by arrows A4 and A5, but also the air flow that does not pass through the filter medium 103e of the filter as shown by arrows A6 and A7 is generated. The air flow indicated by the arrows A6 and A7 is a gap flow path S (valley bottom portion of the filter medium 103e) formed due to the presence of a margin M2 (see FIG. 5) between the valley bottom portion of the filter medium 103e and the support member 21. The area between the storage unit 101 and the bottom surface 101f of the storage unit 101), which may reduce the dust collecting function originally required for the filter 103.

Therefore, an object of the present invention is to prevent air leakage in the storage portion of the filter and to fully exert the dust collecting function of the filter.

In order to solve the above problems, the invention according to claim 1 of the present invention includes a filter medium which is mountain-folded and valley-folded and has a plurality of mountain-folded portions and a plurality of valley-folded portions alternately, and at least the edges at both ends of the filter medium. A filter having a support member fixed to the side is provided in a storage portion having a square bottom surface provided with an air suction hole in the center and a filter insertion port formed on one of the side surfaces orthogonal to the bottom surface. , A blower with a filter of a vehicle air conditioner that is stored substantially horizontally, and the filter is formed from a mountain fold surface formed by the apex of the plurality of mountain folds to the apex of the plurality of valley folds. The support member thickness dimension, which is the dimension of the support member in the direction along the filter medium thickness dimension, is larger than the filter medium thickness dimension up to the valley fold surface, and the storage portion is formed of the plurality of valley fold portions from the bottom surface. Of these, the gap flow path between the bottom surface and the outer valley fold is blocked by contacting the outer valley fold located outside the air suction hole and over almost the entire length of the outer valley fold. It is characterized by having means.

The invention according to claim 2 is characterized in that, in addition to the configuration according to claim 1, the blocking means is a rib extending from the bottom surface toward the filter and closing the gap flow path. ..

The invention according to claim 3 is characterized in that, in addition to the configuration according to claim 2, the rib is an elastic member.

In the invention according to claim 4, in addition to the configuration according to claim 1, the blocking means is configured on a side surface orthogonal to the bottom surface, which is not a side surface on which the filter insertion port is formed, and the valley. It is characterized by being a step forming a blocking surface located on the surface of the folded surface.

The invention according to claim 5 is characterized in that, in addition to the configuration according to any one of claims 1, 2 and 4, the blocking means is integrated with the accommodating portion.

The invention according to claim 6 is characterized in that, in addition to the configuration according to any one of claims 1 to 5, the blocking means is formed along the insertion direction of the filter into the accommodating portion. And.

In the invention according to claim 7, in addition to the configuration according to any one of claims 1 to 5, the blocking means extends in a direction substantially orthogonal to the insertion direction of the filter into the accommodating portion. It is characterized in that it is formed.

According to the present invention, it is possible to prevent air leakage in the storage portion of the filter and to fully exert the dust collecting function of the filter.

This is an example of an external perspective view of the air blower with a filter of the present invention in a state where the intake portion is removed. It is a partially enlarged view near the end of the filter shown in FIG. FIG. 5 is a conceptual diagram of a vehicle air conditioner described in Patent Document 1. It is a diffusion decomposition perspective view of the filter shown in FIG. It is a figure which shows the prior art of the filter described in Patent Document 2. It is a partial external perspective view of the blower with a filter used in the air conditioner for vehicles which was the premise of this invention. FIG. 3 is an external perspective view showing a state in which the intake portion is removed from the air blower with a filter shown in FIG. FIG. 7 is a partially enlarged view of the vicinity of the end of the filter shown in FIG. 7. This is an example of another embodiment of the external perspective view in a state where the intake portion of the air blower with a filter of the present invention is removed.

An embodiment of the blower with a filter of the present invention will be described.

<Appearance>
FIG. 1 is an example of an external perspective view of the blower with a filter of the present invention in a state where the intake portion is removed. FIG. 2 is a partially enlarged view of the vicinity of the end of the filter shown in FIG.

The difference between the air blower 100-2 with a filter in the embodiment shown in FIG. 1 and the air blower 100-1 with a filter shown in FIG. A blocking means 200 for blocking the gap flow path S between the bottom surface 101f and the outer valley fold portion by contacting the outer valley fold portion located outside the suction hole 106 and over almost the entire length of the outer valley fold portion. It is a point prepared.

<Structure>
Here, the filter 103 includes a filter medium 103e that is mountain-folded and valley-folded and has a plurality of mountain-folded portions and a plurality of valley-folded portions alternately, and at least a support member 103b fixed to the edge side at both ends of the filter medium 103e. It has.

As shown in FIG. 2, the filter 103 has a support member 103b rather than a filter medium thickness dimension H1 from a mountain fold surface formed at the vertices of a plurality of mountain folds to a valley fold surface formed at the vertices of a plurality of valley folds. Of these, the support member thickness dimension H2, which is a dimension in the direction along the thickness dimension of the filter medium 103e, is larger.

The storage portion 101 made of resin (for example, polypropylene containing talc) includes a rectangular bottom surface 101f having an air suction hole 106 in the center and a filter insertion port 102 formed on one of the side surfaces 101w orthogonal to the bottom surface 101f. The filter 103 is housed substantially horizontally. After the filter 103 is stored in the storage unit 101, the filter insertion port 102 is closed by a filter cover (not shown) to prevent the filter 103 from falling off and to ensure the airtightness of the filter storage unit 101. NS.

The blocking means 200 is preferably a rib extending from the bottom surface 101f toward the filter 103 at the time of mounting and closing the gap flow path.

The rib may be an elastic member (for example, rubber, sponge). The ribs are preferably independently foamed urethane foam. The ventilation blocking performance is high, and the effect of preventing air leakage in the storage part can be surely obtained.

The blocking means 200 is formed on a side surface 101w orthogonal to the bottom surface 101f, which is not a side surface on which the filter insertion port 102 is formed, and forms a blocking surface located on the surface of the valley fold surface (not shown). ) May be.

The blocking means 200 may be integrated with the storage unit 101. When integrated, the blocking means 200 and the accommodating portion 101 can be formed at the same time by the resin injection molding step, which is preferable.

The blocking means 200 is preferably formed along the insertion direction of the filter 103 into the accommodating portion 101. It effectively prevents the filter from being unintentionally caught when the filter 103 is inserted or removed.

<Effect>
As shown in FIG. 2, even if the sirocco fan 105 rotates and air suction is started through the air suction port 106 after the filter 103 is stored in the storage portion 101 in the direction of the arrow P20, the gap flow path S is maintained by the shielding means 200. Since it is blocked, the air flow is substantially limited to the components that pass through the filter medium 103e as indicated by arrows A21 and A22, and air leakage is prevented.

<Other embodiments>
Next, another embodiment will be described with reference to FIG.

FIG. 9 is another example of an external perspective view of the air blower with a filter of the present invention in a state where the intake portion is removed. The difference between the blower with filter 100-2 in the embodiment shown in FIG. 1 and the blower with filter 100-3 shown in FIG. 9 is the extension direction of the mountain fold and the valley fold of the filter 103, and the support member 103b. Each of the extension direction and the blocking means 200'extend in a direction substantially orthogonal to the filter insertion direction. As the filter 103, it is preferable to configure the blower device 100-3 with a filter so that the same product as the filter 103 shown in FIG. 1 can be applied.

The blocking means 200'is provided on the bottom surface 101f', and is arranged in front of the air suction port 106' when viewed along the arrow P1. As a result, an air flow that tends to flow in the gap flow path S'(not shown, a region between the valley bottom of the filter medium 103e and the bottom surface 101f' of the storage portion 101') in front of the air suction port 106'. Is blocked and air leakage is prevented.

When the blocking means 200'is arranged behind the air suction port 106' when viewed along the arrow P1, it is preferable to provide the blocking means 200'on a filter cover (not shown) that closes the filter insertion port 102'. As a result, an air flow that tends to flow in the gap flow path S'(not shown, a region between the valley bottom of the filter medium 103e and the bottom surface 101f' of the storage portion 101') behind the air suction port 106'. Is blocked and air leakage is prevented. Further, by not providing the blocking means 200'on the bottom surface 101f' behind the air suction port 106', the filter 103 can be easily attached and detached.

It should be noted that the above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be carried out within a range not deviating from the gist thereof. be.

<Effect>
According to other embodiments, even if the sirocco fan 105'rotates and starts sucking air through the air suction port 106', the gap flow path S'is blocked by the shielding means 200', so that the air flow is substantially. Only the components that pass through the filter medium 103e are present, and air leakage is prevented.

<Modification example>
For example, in the above-described embodiment, the case where the upper surface of the blocking means 200 is flat has been described, but the present invention is not limited to this, and the upper surface 200a of the blocking means 200 is a semicircular surface convex downward. Either a downwardly convex paraboloid, an inclined surface, a V-shaped surface, a U-shaped surface, a Λ-shaped surface, a semi-ellipsoidal surface, or an upwardly convex semicircular surface, an upwardly convex paraboloidal surface, or an upwardly convex semi-elliptical surface. May be.

The blower with a filter according to the present invention is an invention that has economic value and can be industrially used because it can be manufactured industrially and can be the subject of commercial transactions.

10 ... Filter 100-1 ・ Blower with filter 100-2 ・ Blower with filter 100-3 ・ Blower with filter 101, 101'・ ・ ・ ・ Storage 101f, 101f' ・ ・ Bottom 101g ・ ・ Guide Wall 101t, 101t'・ ・ Front end of storage part 101w, 101w' ・ ・ Side surface 102, 102' ・ ・ ・ ・ Filter insertion port 103 ・ ・ ・ Filter 103b ・ ・ Support member 103e ・ ・ Filter material 103t ・ ・ Front end of filter 104 , 104'・ ・ ・ ・ ・ Motor 105, 105'・ ・ ・ ・ ・ Sirocco fan 106, 106 ´ ・ ・ ・ ・ ・ ・ Air suction hole 150 ・ ・ ・ Intake part 200, 200 ´ ・ ・ ・ ・ ・ ・ Shutoff means A ・ ・・ ・ ・ Air flow H1 ・ ・ ・ ・ Filter material thickness dimension H2 ・ ・ ・ ・ Support member thickness dimension P ・ ・ ・ ・ ・ Filter insertion direction S ・ ・ ・ ・ ・ Gap flow path

Claims (7)

A filter having a filter medium (103e) having a plurality of mountain folds and valley folds alternately having a plurality of mountain folds and a plurality of valley folds, and support members (103b) fixed to at least the edge sides of both ends of the filter medium. (103) is a filter insertion port formed on one of a quadrangular bottom surface (101f, 101f') provided with an air suction hole (106) in the center and a side surface (101w, 101w') orthogonal to the bottom surface. A blower with a filter (100-2, 100-3) of a vehicle air conditioner that is stored substantially horizontally in a storage unit (101, 101') having (102, 102').
The filter (103) has a support member rather than a filter medium thickness dimension (H1) from a mountain fold surface formed at the vertices of the plurality of mountain fold portions to a valley fold surface formed at the vertices of the plurality of valley fold portions. Of these, the support member thickness dimension (H2), which is the dimension in the direction along the filter medium thickness dimension, is large.
The storage portion (101, 101') extends from the bottom surface (101f, 101f') to the outer valley fold portion located outside the air suction hole (106, 106') among the plurality of valley fold portions. Further, it is characterized by being provided with blocking means (200, 200') for blocking the gap flow path (S) between the bottom surface and the outer valley fold portion by contacting the outer valley fold portion over almost the entire length. Blower with filter (100-2, 100-3). The blower device with a filter according to claim 1, wherein the blocking means is a rib extending from the bottom surface toward the filter and closing the gap flow path. The blower device with a filter according to claim 2, wherein the rib is an elastic member. The blocking means is a step formed on a side surface orthogonal to the bottom surface, which is not a side surface on which the filter insertion port is formed, and forms a blocking surface located on the surface of the valley fold surface. The blower with a filter according to claim 1. The blower with a filter according to any one of claims 1, 2, and 4, wherein the blocking means is integrated with the storage portion. The blower with a filter (100-) according to any one of claims 1 to 5, wherein the blocking means (200) is formed along an insertion direction of the filter into the storage portion. 2). The blocking means (200') according to any one of claims 1 to 5, wherein the blocking means (200') is formed so as to extend in a direction substantially orthogonal to the insertion direction of the filter into the accommodating portion. Blower with filter (100-3).

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