JP2020045029A - Blower device - Google Patents

Abstract

To provide a blower device which can easily secure durability.SOLUTION: This blower device blows in-cabin air to an on-vehicle apparatus. The blower device comprises a door-side opening part formed below a seat face in a position opposing a door of a vehicle, a non-door side opening part formed below a seat face in a position not opposing the door, and a duct having an apparatus-side opening part communicating with the on-vehicle apparatus. The blower device also comprises: a fan arranged at a downstream side of the door-side opening part and the non-door side opening part; a filter covering the non-door side opening part; a shutter for opening and closing the door-side opening part; and energization means for keeping the shutter in a closed state while withstanding negative pressure in the duct which is generated in a state that the door is closed, and the fan rotates. The shutter is opened while withstanding the energization means by positive pressure at the outside of the duct which is generated when the door is closed, and displaced to an orientation for guiding air intruding into the duct from the door-side opening part to the non-door side opening part by the positive pressure.SELECTED DRAWING: Figure 1

Description

  The technology disclosed in this specification relates to a blower that blows vehicle interior air to onboard equipment.

Hybrid vehicles and electric vehicles are equipped with various in-vehicle devices such as batteries and converters, and the temperature of the in-vehicle devices may be adjusted by blowing air in the vehicle interior. In order to prevent foreign substances such as dust contained in the vehicle interior air from being sent to the on-vehicle equipment, a filter is arranged at the opening of the duct for taking in the vehicle interior air.
In the blower disclosed in Patent Literature 1, a duct is provided in a door of a vehicle, and a fan is mounted in the duct. Both ends of the duct open inside the door, and when the door is closed, one end of the duct communicates with the vehicle interior space, and the other end communicates with the vehicle-mounted device via a duct extending through the vehicle interior. In the technique of Patent Literature 1, a fan is rotated with a door closed to blow vehicle interior air toward on-vehicle equipment. When the air blowing is continued, foreign matters accumulate on the filter covering the opening communicating with the vehicle interior space. In the technique of Patent Document 1, the fan is inverted when the door is opened. Then, the foreign matter deposited on the filter is removed by the reverse flow.

JP 2017-212069 A

  In the technology of Patent Document 1, it is necessary to arrange a fan and a fan motor in a door to which an opening / closing shock is applied, and it is difficult to ensure durability. This specification discloses a blower that easily secures necessary durability.

The blower disclosed in this specification blows vehicle interior air to onboard equipment. This blower is provided with a duct, and the duct is formed under a seat surface at a position facing the door of the vehicle, under a seat surface at a position not facing the door. And a device-side opening communicating with the vehicle-mounted device.
Further, the blower, a fan disposed downstream of the door-side opening and the non-door-side opening, a filter covering the non-door-side opening, and a shutter for opening and closing the door-side opening, A biasing means is provided. The biasing means keeps the shutter closed against a negative pressure in the duct generated when the door is closed and the fan is rotating.
Positive pressure develops outside the duct when the door is closed. In the blower disclosed in this specification, when the positive pressure is generated, the shutter opens the door side opening against the urging means, and the air that enters the duct from the door side opening through the non-door is opened. It is displaced in a direction to guide to the side opening.

  According to the above blower, the shutter is opened by utilizing the positive pressure outside the duct generated when the door is closed, and the air that enters the duct is guided to the filter by the positive pressure, and the reverse flow is caused to flow through the filter. it can. The foreign matter deposited on the filter can be removed by the reverse flow.

  In the blower described above, there is no need to arrange a fan or the like in the door to which the opening / closing shock is applied. Further, since the positive pressure outside the duct generated when the door is closed is used, it is not necessary to control the fan according to the opening and closing of the door. That is, there is no need for an electric device or the like for transmitting the opening and closing of the door. Therefore, it is easy to secure necessary durability.

  The details and further improvements of the technology disclosed in this specification will be described in the following “Detailed description of the invention”.

It is a side view of the air blower of an Example. It is a front view of the air blower of an Example. FIG. 3 is a partial cross-sectional view of the blower taken along line III-III in FIG. 1. FIG. 4 is a partial cross-sectional view similar to FIG. 3 showing a change in airflow when the door is closed.

  A blower of an embodiment will be described with reference to the drawings. 1 to 4, the direction of the arrow F indicates the front of the vehicle. The direction of the arrow V indicates the upper side of the vehicle. Further, the direction of the arrow H indicates the left hand direction when facing the front of the vehicle.

  FIG. 1 is a side view showing a mounting position of the blower 20 of the embodiment in a vehicle. The seat 2 shown in FIG. 1 is a rear seat of the vehicle. The seat 2 is fixed to the floor 8 of the vehicle by an FR bracket 4 disposed in front of the bottom surface and an RR bracket 6 disposed behind the bottom surface. The FR bracket 4 and the RR bracket 6 are fixed to the floor 8 using bolts 10, respectively. Here, the bottom surface of the seat 2 and the floor 8 have a height difference caused by the package of the vehicle. Specifically, the bottom surface of the seat 2 is located higher than the floor 8. For this reason, the seat 2 is fixed to the floor 8 so as to be lifted by the FR bracket 4 and the RR bracket 6. The RR door 12 is supported by the vehicle so as to be openable and closable by a hinge provided on the front side thereof at a position overlapping the seat 2 in a side view. The method of supporting the hinge of the RR door 12 and the like are well known, and therefore, illustration and description are omitted. In addition, in order to make the drawing easier to understand, only the outline of the RR door 12 is indicated by a two-dot chain line. Although a carpet is arranged on the upper surface of the floor 8, it is not shown.

  As described above, the bottom surface of the seat 2 is located higher than the floor 8. In other words, there is a space between the bottom surface of the seat 2 and the floor 8. That is, there is a space below the seating surface of the seat 2. A battery 36 (an example of an on-vehicle device) is mounted on the vehicle using the space below the seat. The air blower 20 that sends the vehicle interior air to the battery 36 is also mounted on the vehicle using the space between the bottom surface of the seat 2 and the floor 8. Although details will be described later, the sending device 20 is arranged on the right side of the vehicle of the battery 36. The blower 20 is covered from the outside by a resin cover. In order to facilitate understanding of the structure of the blower 20, a cover made of resin is not shown in FIGS. 1 and 2, the portion of the blower 20 covered with the resin cover is represented by a broken line, and the portion exposed in the vehicle interior is represented by a solid line.

  The blower 20 has a duct 38 having a rectangular hollow cross section extending in the vehicle front-rear direction. Although details will be described later, the duct 38 is open to the battery 36. That is, the duct 38 has an opening communicating with the battery 36. Vehicle interior air is supplied to the battery 36 through the duct 38. That is, the duct 38 plays a role of a flow path of the vehicle interior air. The duct 38 has an air supply port 22 on the front surface. The air supply port 22 is a rectangular opening. In the air blower 20 according to the embodiment, the air supply port 22 is entirely open in the rectangle. However, for example, a grid-like rib connecting the ends of the rectangular opening may be arranged. The blower 20 takes in the vehicle interior air from the air supply port 22 into the duct 38. The air supply port 22 is covered by the filter 24 from the inside of the duct 38 in order to prevent foreign matter such as dust from entering the inside of the duct 38 together with the air inside the vehicle.

  A fan 34 is provided at a position facing the air supply port 22 of the blower 20. The fan 34 rotates to take the vehicle interior air into the duct 38 from the air supply port 22 by making the inside of the duct negative pressure. Further, the fan 34 blows the vehicle interior air taken into the duct 38 to the battery 36. The fan 34 is disposed closer to the battery 36 than the air supply port 22. That is, the fan 34 is arranged downstream of the air supply port 22. The vehicle interior air blown to the battery 36 by the fan 34 cools the battery 36.

  The duct 38 has a door-side opening (hereinafter, referred to as a door opening) on the right side surface of the vehicle. The door opening 26 is a rectangular opening. In the air blower 20 according to the embodiment, the door opening 26 has the same entire rectangular shape as the air supply port 22. However, for example, grid-like ribs connecting the ends of the rectangular opening may be arranged. . The door opening 26 is arranged on the air supply port 22 side with respect to the fan 34. In other words, the fan 34 is arranged downstream of the door opening 26.

  The door opening 26 is covered with a filter (hereinafter, referred to as a door filter) from the inside of the duct 38. As will be described later in detail, the door filter 28 is further covered with a shutter 30 from the inside of the duct, and the shutter 30 is opened and closed by a hinge portion 32 arranged behind the door opening 26 so as to open and close the duct 38. Supported.

  FIG. 2 shows a front view of the blower 20 in the embodiment. As described above, the seat 2 is a rear seat of the vehicle. The seat 2 is a so-called bench seat in which seats on the right, center, and left sides of the vehicle are integrated. FIG. 2 shows a portion of the seat 2 on the right side of the vehicle. The seat 2 is fixed to the floor 8 with bolts 10 and FR brackets 4 and RR brackets 6 (not shown in FIG. 2, see FIG. 1) arranged at the left and right ends of the right seat of the vehicle. Although not shown in FIG. 2, the FR bracket 4 and the RR bracket 6 are similarly arranged on the left seat of the vehicle. A battery 36 is arranged in a space below the seating surface of the seat 2. The sending device 20 is arranged on the left side of the battery 36 (that is, on the right side of the vehicle). The surface of the duct 38 of the blower 20 facing the battery 36 is open. That is, the duct 38 has an opening communicating with the battery 36. The sending device 20 sends the vehicle interior air to the battery 36 via the duct 38. As described above, the rectangular air supply port 22 is provided on the surface of the duct 38 on the front side of the vehicle (that is, on the front side of the drawing in FIG. 2). The air supply port 22 is covered with the filter 24 from the inside of the duct 38. Further, a fan 34 is disposed substantially at the center of the duct 38 on the vehicle rear side in the left-right direction. Further, a rectangular door opening 26 is provided on the right surface of the vehicle of the duct 38, and the door filter 28 covers the door opening 26 from inside the duct 38. Further, a shutter 30 is arranged inside the door filter 28.

  An RR door 12 is disposed on the right side of the seat 2 in the vehicle. That is, the door opening 26 of the blower 20 and the RR door 12 face each other.

  The blower 20 will be described with reference to FIG. FIG. 3 is a partial cross-sectional view taken along line III-III of FIG. As described above, the sending device 20 rotates the fan 34 disposed at the rear of the vehicle in the duct 38 to blow the air in the vehicle compartment to the battery 36. That is, the inside of the duct 38 is made to have a negative pressure by rotating the fan 34. When the pressure in the duct 38 becomes negative, the air in the vehicle compartment passes through the air supply port 22 and is taken into the duct 38. In FIG. 3, the airflow S1 generated by the rotation of the fan 34 is represented by a two-dot chain line.

  The duct 38 of the blower 20 has the door opening 26 on the right side surface of the vehicle. The door opening 26 faces the RR door 12. The door opening 26 is covered by a door filter 28 from the inside of the duct 38. A shutter 30 is arranged so as to cover the door filter 28. The shutter 30 is supported by a hinge 32 arranged on the vehicle rear side of the opening 26 and can be opened and closed. The shutter 30 opens when the front end rotates about the hinge 32 in a direction away from the air supply port 22.

  As described above, the inside of the duct 38 has a negative pressure due to the rotation of the fan 34. Therefore, the shutter 30 is pulled in the opening direction. Here, the hinge part 32 has a spring hinge 32a (an example of an urging means). The spring hinge 32a applies a load F in a direction in which the shutter 30 closes by a spring spring. Due to the load F, the shutter 30 can be closed against the negative pressure in the duct 38 by the rotation of the fan 34.

  The mechanism by which foreign matter such as dust accumulates on the filter 24 of the blower 20 will be described. The air supply port 22, which is the intake port of the vehicle interior air, is covered by the filter 24 from the inside of the duct 38. Foreign matter D contained in the vehicle interior air taken into the duct 38 by the airflow S <b> 1 is captured by the filter 24. Foreign matter such as dust brought by the occupant from outside the vehicle exists in the vehicle interior. Therefore, when the blower 20 continues to rotate the fan 34, foreign matter D such as dust accumulates on the front surface of the filter 24 on the vehicle. If the foreign matter D accumulates excessively, the filter 24 is clogged, and the air in the passenger compartment cannot be taken into the duct 38. If the air in the passenger compartment cannot be taken into the duct 38, the battery 36 cannot be cooled.

  A change in airflow when the RR door 12 is closed will be described with reference to FIG. FIG. 4 shows a partial sectional view similar to FIG. 3 when the RR door 12 is closed. In FIG. 4, an airflow S2 generated by the fan 34 and an airflow S3 generated when the RR door 12 is closed are represented by a two-dot chain line. The RR door 12 is supported by the body 14 so as to be openable and closable by a hinge disposed on the vehicle front side of the RR door. Therefore, when the RR door 12 is closed, the RR door 12 rotates around the hinge in a direction in which the vehicle rear side of the RR door 12 approaches the body 14.

  When the RR door 12 is rotating to be closed, the RR door 12 entrains air existing in the rotation direction of the RR door 12 outside the vehicle compartment. The trapped air is pushed into the vehicle compartment when the RR door 12 is closed. Here, as described above, the door opening 26 of the blower 20 faces the RR door 12. Therefore, when the RR door 12 is closed, the air pushed into the vehicle interior hits the shutter 30 from outside the door opening 26 of the blower 20 via the door filter 28. That is, a positive pressure outside the duct that occurs when the RR door 12 is closed is generated in the shutter 30.

  Here, the seat 2 is disposed at a position separated from the hinge supporting the RR door 12 in the vehicle front-rear direction in order to secure a living space for the occupant. Further, as described above, the door opening 26 of the blower 20 is disposed below the seat surface of the seat 2. Therefore, the door opening 26 is arranged at a position away from the hinge, which is the center of rotation of the RR door 12, in the vehicle front-rear direction. The further away from the center of rotation, the longer the distance traveled by rotation. Specifically, a portion of the RR door 12 that is apart from the rotation center moves a long distance by rotation when the RR door 12 is closed. In other words, the portion of the RR door 12 apart from the rotation center has a large volume of air existing in the rotation direction. Further, as described above, the door opening 26 disposed below the seating surface of the seat 2 faces a portion away from the rotation center of the RR door 12. Therefore, the positive pressure outside the duct generated when the RR door 12 is closed is large.

  As described above, the shutter 30 maintains the closed state against the negative pressure in the duct 38 due to the load F by the spring hinge 32a. Here, the positive pressure when the RR door 12 is closed is larger than the load F by the spring hinge 32a. Therefore, the spring hinge 32a cannot withstand the positive pressure when the RR door 12 is closed, and opens the shutter 30. When the shutter 30 is opened, the airflow S <b> 3 enters the duct 38 from the door opening 26. The airflow S3 is blocked by the open shutter 30 and cannot flow toward the fan 34. The airflow S <b> 3 is guided by the open shutter 30 and flows in the direction of the opening 22. Further, the airflow S2 by the fan 34 is also blocked by the open shutter 30. Therefore, the airflow S3 flows from the rear side of the filter 24 to the front side. That is, the shutter 30 is displaced in a direction to guide the airflow S <b> 3 entering the duct 38 from the door opening 26 to the air supply port 22 by the positive pressure outside the duct generated when the RR door 12 is closed. Here, the airflow S3 is a reverse flow to the airflow flowing through the filter 24 by the fan 34. When the airflow S3, which is the reverse flow, flows through the filter 24, the foreign matter D deposited on the front surface of the filter 24 is diffused into the vehicle interior due to the negative pressure generated by the rotation of the fan 34. That is, the foreign matter D deposited on the filter 24 is removed. In other words, clogging of the filter 24 is eliminated.

  After the RR door 12 is closed and the airflow S3 passes through the filter 24 into the vehicle interior, the shutter 30 is closed by the load F by the spring hinge 32a. When the shutter 30 is closed, the entire interior of the duct 38 becomes a negative pressure again, and the air in the vehicle interior that has passed through the filter 24 from which the clogging has been eliminated is blown to the battery 36 via the duct 38.

  The blower 20 according to the embodiment has been described above. As described above, while the fan 34 continues rotating, the sending device 20 opens the shutter 30 by the positive pressure when the RR door 12 is closed, and diffuses the foreign matter D deposited on the filter 24 by the airflow S3. be able to. Therefore, when the foreign matter D is diffused by the sending device 20, it is not necessary to control the rotation of the fan 34. That is, there is no need to control the fan 34 using an additional electric device. In other words, it is easy to secure necessary durability.

  In the air blower 20 according to the embodiment, the battery 36 is arranged below the seat 2. However, the technology disclosed in the present specification is not limited to the case where air is blown to an in-vehicle device arranged under a seat. For example, the technology disclosed in this specification can be applied to a blower that blows air to an in-vehicle device mounted in a trunk room.

  The biasing means of the blower 20 in the embodiment uses the spring hinge 32a, but the biasing means in the blower disclosed in the present specification is not limited to the spring hinge, and may use another mechanism. .

  Further, the filter 24 and the door filter 28 need not cover the air supply port 22 and the door opening 26 from inside the duct 38. The duct 38 may be covered from outside. Furthermore, although the air blower 20 in the embodiment is arranged below the seat of the rear seat of the vehicle, the technology disclosed in this specification may be arranged below the seat of the front seat of the vehicle.

  As described above, specific examples of the present invention have been described in detail, but these are merely examples, and do not limit the scope of the claims. The technology described in the claims includes various modifications and alterations of the specific examples illustrated above. The technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings can simultaneously achieve a plurality of objects, and has technical utility by achieving one of the objects.

2: Seat 4: FR bracket 6: RR bracket 8: Floor 10: Bolt 12: RR door 14: Body 20: Blower 22: Air supply port 24: Filter 26: Door opening 28: Door filter 30: Shutter 32: Hinge Part 32a: spring hinge 34: fan 36: battery 38: ducts S1 to S3: airflow D: foreign matter

Claims (1)

It is a blower that blows vehicle interior air to onboard equipment,
A door-side opening formed under the seat at a position facing the door of the vehicle, a non-door-side opening formed under the seat at a position not facing the door, and communicates with the vehicle-mounted device. A duct having a device side opening,
A fan disposed downstream of the door-side opening and the non-door-side opening;
A filter covering the non-door side opening,
A shutter for opening and closing the door-side opening;
Biasing means for closing the shutter against negative pressure in the duct generated when the door is closed and the fan is rotating,
The shutter opens the door-side opening against the urging means due to the positive pressure outside the duct generated when the door is closed, and the air that enters the duct from the door-side opening is removed by the shutter. A blower, which is displaced in a direction for guiding to a non-door side opening.

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