JPH0769035A - Air blowing unit for vehicle - Google Patents

Abstract

PURPOSE:To shorten a shaft directional dimension of an air blowing unit for a vehicle, and realize a thin type air blowing unit for the vehicle by setting the opening area of an outside air introducing port and an inside air introducing port large, and an outside air opening and closing damper and an inside air opening and closing damper rotatably freely in an inside outside air switching case. CONSTITUTION:An inside outside air switching case 12 of an inside outside air switching means 4 is arranged so as to cover a side surface case part 8 in the diameter direction of a scroll case 6 of a centrifugal air blower 3 and an air intake port 9 of the air blower 3, and an outside air introducing port 13 and an inside air introducing port 14 are formed wide in an upper part of this inside outside air switching case 12. An inside outside air switching damper 15 to block up either one of the outside air introducing port 13 and the inside air introducing port 14 is housed inside of the upper part of the inside outside air switching case 12. In this way, when the outside air introducing port 13 and the inside air introducing port 14 are arranged in the inside outside air switching case 12, the opening area can be secured large, and since the inside outside air switching damper 15 can be housed in the inside outside air switching case 12, a shaft directional dimension of an air blowing unit can be shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower unit for a vehicle that switches between the air outside the vehicle compartment (outside air) and the air inside the vehicle compartment (inside air) to supply the air into the vehicle compartment.

[0002]

2. Description of the Related Art The following two techniques are known as conventional techniques for a vehicle blower unit. B) The first vehicle blower unit shown in FIG. 13 is provided on the surface of the scroll case 101 (fan case) of the centrifugal blower on which the air intake 102 is provided (the surface of the motor 103 in the axial direction). The inside / outside air switching case 104 of the inside / outside air switching means is attached to the. The inside / outside air switching case 104 is provided with an inside air introduction port 105 and an outside air introduction port 106.
An opening / closing damper 107 for opening / closing the inside air introduction port 105 and the outside air introduction port 106 is provided. (B) The second vehicle blower unit is, as shown in FIG. 14, a technique disclosed in Japanese Utility Model Laid-Open No. 5-10016, and the inside air introduction port 1 provided in the inside / outside air switching case 104.
05 and the outside air sucked from the outside air inlet 106 reduce the suction resistance of the outside air and the inside air. This vehicle blower unit includes a scroll case 101 for a centrifugal blower.
The inside / outside air switching case 104 of the inside / outside air switching means,
An inside / outside air switching case 104 facing each other in the axial direction of the motor 103 (the axial direction of the motor 103 is hereinafter referred to as the axial direction).
The inside air introduction port 105 and the outside air introduction port 106 are provided on both surfaces.

[0003]

In the two conventional techniques shown in the above a) and b), the inside air introduction port 105 and the outside air introduction port 106 are open within the diameter of the scroll case 101. Therefore, the inside air inlet 105 and the outside air inlet 1
The opening / closing damper 107 that opens and closes 06 is rotated at least in the axial direction outside the scroll case 101. As a result, the conventional vehicle blower unit has a large axial dimension. Further, since the radial dimension of the fan 108 of the vehicle blower unit needs to be at least the radial dimension of the scroll case 101 larger than the fan diameter, the fan radial dimension of the vehicle blower unit also becomes large. In other words, the conventional vehicle blower unit cannot be installed in a narrow space because the axial dimension and the fan radial dimension are both large.For example, the vehicle blower unit is provided in a thin shape to reduce the vehicle interior space. Could not be expanded.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a blower unit for a vehicle which can be made thin.

[0005]

Means for Solving the Problems The vehicle blower unit of the present invention employs the following technical means. The air blower unit for the vehicle contains a fan that generates an air flow, this fan,
A fan case having an inlet for taking in the air sucked by the fan and a side case covering the radial direction of the fan, a blower equipped with a motor for rotationally driving the fan, and an outside air inlet for taking in air outside the vehicle compartment. And an inside / outside air switching case for guiding inside air taken in from the outside air introduction port or the inside air introduced from the inside air introduction port to the intake port, and the outside air introduction A plate-shaped outside air opening / closing damper for opening / closing the mouth, and an inside / outside air switching unit having a plate-shaped inside air opening / closing damper for opening / closing the inside air introduction port are provided. The inside / outside air switching case is provided so as to cover the intake and at least a part of the side case portion, and the outside air introduction port and the inside air introduction port are provided in a portion covering the side case portion. And storing the outside air opening / closing damper and the inside air opening / closing damper.
The outside air opening / closing damper and the inside air opening / closing damper may be provided in common or separately.

[0006]

Even when the axial dimension of the inside / outside air switching case is the same as the axial dimension of the fan case, the outside air introduction port and the inside air introduction port are provided in the inside / outside air switching case at the portion covering the side case portion. As a result, the opening areas of the outside air introduction port and the inside air introduction port can be increased. Also,
By providing the outside air introduction port and the inside air introduction port on the inside / outside air switching case that covers the side case portion, even if the axial dimension of the inside / outside air switching case is the same as the axial dimension of the fan case, the outside air The opening / closing damper and the inside air opening / closing damper can be stored in the inside / outside air switching case. The inside / outside air switching case has an axial dimension of the inside / outside air switching case of the fan case in order to form an air passage for guiding outside air or inside air sucked from the outside air inlet or the inside air inlet to the inlet of the fan case. It is provided with a size slightly larger than the axial size.

[0007]

As has been described above, the vehicle blower unit according to the present invention has the advantage that even if the axial dimension of the inside / outside air switching case is slightly larger than the axial dimension of the fan case, the external air Since the opening area of the inlet and the inside air inlet is large and the outside air opening / closing damper and the inside air opening / closing damper can rotate in the inside / outside air switching case, the axial dimension of the vehicle blower unit can be greatly shortened. That is, the vehicle blower unit can be made thin.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a vehicle blower unit of the present invention will be explained based on an embodiment shown in the drawings. [Structure of Embodiment] FIGS. 1 to 6 show an embodiment of the present invention. FIGS. 1 and 2 are left side sectional views of a vehicle blower unit, and FIG. 3 is a top view of a vehicle blower unit. 4 is a rear view of the vehicle blower unit. The vehicular blower unit 1 is a thin type whose axial dimension is kept small, the axial direction is along the traveling direction of the vehicle, and the outside air introduction port 13 (described later) is open in the upper direction. It is placed in the dashboard of. In addition, the vehicle blower unit 1
Is used in a vehicle air conditioner, and supplies outside air or inside air by switching to the temperature control unit 2 for adjusting the temperature of the air blown into the vehicle interior. The outside air or the inside air sent to the temperature control unit 2 is supplied to an outlet unit (not shown) after the temperature of the temperature control unit 2 is changed, and the outlet units (for example, face outlet and foot outlet) of the outlet unit are supplied. From the outlet, the defroster outlet) is blown toward each part of the vehicle.

The vehicle blower unit 1 includes a temperature control unit 2
Also, a blower 3 for generating an air flow toward the passenger compartment through the blowout unit, and an inside / outside air switching means 4 for switching the outside air or the inside air to guide the outside air or the inside air are provided. The blower 3 is rotationally driven to drive air to generate an air flow, a centrifugal fan 5 that houses the fan 5, a scroll case 6 (a fan case of the present invention), and a fan 5 that receives power to turn the fan 5 on. Electric motor 7 driven to rotate
Composed of. The electric motor 7 is attached to the scroll case 6 from the rear side (vehicle rear side).

In the blower unit 1 of this embodiment, when the air conditioner is in the face mode, the fan 5 has a diameter of 150 mm so that the amount of air blown from the face outlet may reach 450 m ³ / h (large air flow). Axial dimension is 65 mm
The fan 5 of is adopted. Then, the fan 5 is driven at 3000 rpm by the electric motor 7 to achieve the large air volume.

The scroll case 6 has a fan 5 for storing it.
In order to efficiently guide the air flow generated by the fan to the temperature control unit 2, the side case portion 8 that covers the fan 5 in the radial direction is formed in a scroll shape. The axial dimension of the scroll case 6 is slightly larger than the axial dimension of the fan 5.
It is provided at 0 mm. The scroll case 6 has a bell mouth-shaped inlet 9 that takes in the air sucked by the fan 5 into the scroll case 6, and a duct shape that guides the air flow generated by the fan 5 to the outside of the scroll case 6 (the temperature control unit 2). The discharge port 10 is provided. Further, the scroll case 6 of the present embodiment is provided with a mounting opening 11 for mounting the electric motor 7 having the fan 5 mounted therein to the scroll case 6 (see FIG. 5).

The rotation speed of the electric motor 7 is controlled according to an applied voltage supplied from a power supply device (not shown), and the fan 5 is generated by controlling the rotation speed of the electric motor 7. The air volume is controlled.

The inside / outside air switching means 4 comprises a scroll case 6
Is provided with the inside / outside air switching case 12 (which allows the inside / outside air switching case 12 to cover the intake 9 and all of the side surface case portion 8). The outside air is introduced into the inside / outside air switching case 12 at a portion above the inside / outside air switching case 12 (in the upward direction in FIG. 1 and above), which covers the side surface case portion 8 (a portion above the dashed line A in FIG. 1). Two outside air introduction ports 13 for guiding the inside air and two inside air introduction ports 14 for guiding the inside air into the inside / outside air switching case 12 are provided. The two outside air inlets 13 are used as the inside / outside air switching case 12
Of the inside air / outside air switching case 1 and the two inside air introduction ports 14 are provided wide on the upper surface (the surface on the upper side in FIG.
Each of the two is wide along the upper sides of the front surface (the surface on the vehicle traveling direction side, the left surface in FIG. 1) and the rear surface (the vehicle rear surface, the right surface in FIG. 1). An outside air introduction duct (not shown) for guiding outside air to the outside air introduction port 13 is connected to the upper surface of the inside / outside air switching case 12.

In the inside / outside air switching case 12, the outside air introduction port 13 in front of the two outside air introduction ports 13 (on the left side in FIG. 1) or the inside air introduction in front of the two inside air introduction ports 14 is introduced. A plate-shaped inside / outside air switching damper 15 (which also serves as the outside air opening / closing damper of the present invention and the inside air opening / closing damper) for closing one of the ports 14 is housed, and the inside of the two outside air introducing ports 13 is rearward (Fig. Outside air inlet 13 (on the right side of 1),
Alternatively, a plate-shaped inside / outside air switching damper 15 that closes one of the two inside air inlets 14 at the rear of the inside air inlets 14
(A combination of the outside air opening / closing damper of the present invention and the inside air opening / closing damper) is housed.

Each of the inside / outside air switching dampers 15 has a shaft 16 rotatably supported by the inside / outside air switching case 12 on one side, and by rotating about the shaft 16, the outside air introduction port 13 or the inside air introduction. One of the mouths 14 is closed. The shaft 16 is rotated by a user via a link mechanism (not shown). Alternatively, it is rotated by an actuator (not shown) (for example, an electric servomotor). The inside / outside air switching damper 15 has a recess 15a recessed toward the scroll case 6 so that the damper does not come into contact with the scroll case 6 due to the rotation of the damper.
Is provided.

The inside / outside air switching case 12 of this embodiment has an axial dimension of 150 mm. This covers the scroll case 6 having an axial dimension of 80 mm, and the outside air or the inside air sucked from the outside air introduction port 13 or the inside air introduction port 14 between the inside / outside air switching case 12 and the scroll case 6 is scrolled. Gaps B (see FIG. 1) for guiding the inlet 6 to the inlet 9 are provided on the front surface side and the rear surface side by 35 mm each. This gap B
Although it is possible to make the vehicle blower unit 1 thin by making the gap B small, the ventilation resistance becomes large by making the gap B small. Therefore,
In this embodiment, in the face mode by the inside air mode,
The amount of air blown from the face outlet is 450 m ³ / h
The gap B was set from the graph shown in FIG. 6 so as to achieve (large air volume). This graph shows the change in air volume when the gap B is changed (solid line C). The solid line D is shown for reference, and the air volume in the face mode in the inside air mode by the conventional vehicle air blower unit (see FIG. 13) using the same air blower 3 as in this embodiment (504 m ³ /
h) is shown. As shown in FIG. 6, the gap B is 35 mm.
Be reduced to, the amount of decrease in air volume as compared to vehicle blower unit 1 of the prior art, is suppressed to 40 to 50 m ³ / h, air volume blown from the face air port 450 m ³
/ H or more. In addition, the amount of air blown from the face outlet in the face mode in the outside air mode is
When compared with the conventional air blower unit for a vehicle (see FIG. 13), the amount of reduction in the air flow is suppressed to 10 m ³ / h.

[Operation of Embodiment] Next, the operation of the above embodiment will be briefly described. (Outside Air Introduction Mode) When the outside air introduction mode is selected, as shown in FIG. 1, the two inside / outside air switching dampers 15 close the inside air inlets 14 and the two outside air inlets 13 open. Then, as shown by the arrow in FIG. 1, the outside air enters the inside / outside air switching case 12 from outside the inside / outside air switching case 12, and is sucked into the intake port 9 of the blower 3. And
The outside air sucked through the intake port 9 is driven by the fan 5 and blown out from the scroll case 6 through the temperature control unit 2 and the blowing unit into the vehicle interior.

(Inside air introduction mode) When the inside air introduction mode is selected, as shown in FIG. 2, the two inside air / outside air switching dampers 15 close the outside air introduction port 13 and the two inside air introduction ports 14 open. Then, as shown by the arrow in FIG. 2, the inside air enters the inside / outside air switching case 12 from outside the inside / outside air switching case 12, and is sucked into the intake port 9 of the blower 3. Then, the inside air sucked from the intake 9 is transferred to the fan 5
And is blown out into the vehicle compartment from the scroll case 6 through the temperature control unit 2 and the blowing unit.

[Effects of Embodiment] The air blower unit 1 for a vehicle of this embodiment is provided with an axial dimension of 150 mm (excluding the protrusion of the electric motor 7). Therefore, by arranging the axial direction of the vehicle blower unit 1 along the traveling direction of the vehicle, for example, the front-rear dimension of the front board at the front of the passenger seat, which accommodates the vehicle blower unit 1, can be reduced. As a result, the interior space of the passenger seat of the vehicle can be increased.

Second Embodiment FIGS. 7 and 8 show a second embodiment. FIG. 7 is a rear view of the vehicle blower unit 1, and FIG. 8 is an upper sectional view of the vehicle blower unit 1. .
In this embodiment, an inside air introduction port 20 is added to the front and rear surfaces of the inside / outside air switching case 12, and this inside air introduction port 20 is used.
Is opened and closed by a plate-shaped inside air opening / closing damper 21 rotatably supported by the inside / outside air switching case 12. Inside air inlet 2
0 is provided in the inside / outside air switching case 12 that covers the left side (the left side in FIG. 7) of the side surface case portion 8 of the scroll case 6, and is vertically provided along the left side of the inside / outside air switching case 12. There is. When the inside air introduction port 20 is provided only on the rear surface, the air volume increases by 20 m ³ / h. When the inside air inlet 20 is provided only on the front surface, the air volume is 10 m ³ / h.
Increase.

[Third Embodiment] FIG. 9 is a side sectional view of a vehicle blower unit 1 showing a third embodiment. In this example,
The intake 9 of the scroll case 6 is provided not only on the front surface but also on the rear surface to which the electric motor 7 is attached. The outside air or the inside air introduced into the inside / outside air switching case 12 is sucked around the motor 7. An intake 9 is provided. Thereby, the outside air or the inside air sucked from the outside air introduction port 13 or the outside air introduction port 13 is guided to the two intake ports 9, so that the ventilation resistance between the scroll case 6 and the inside / outside air switching case 12 is reduced, and The air volume of the blower unit 1 is increased.

[Fourth Embodiment] FIGS. 10 and 11 show a fourth embodiment.
FIG. 10 is a front view of the vehicle blower unit 1, and FIG. 11 is a left side sectional view of the vehicle blower unit showing an inside air introduction mode. The flow of air sucked from the inside air introduction port 14 on the front surface of the inside / outside air switching case 12 (the inside air introduction port 14 on the side different from the side on which the electric motor 7 is attached) is the same as the air sucked from the inside air introduction port 14 on the rear surface. Compared to the flow, it is in very good condition. Therefore, in the present embodiment, the inside / outside air switching case 12 into which the rectified air is introduced.
The inside air introduction port 14 on the front side is enlarged to reduce the introduction resistance of the inside air to increase the air volume of the inside air.

Specifically, the inside / outside air switching damper 15 on the front side for closing the inside air introduction port 14 on the front side of the inside / outside air switching case 12.
Is provided in a substantially maximum area for rotating without contacting the scroll case 6, and the area of the inside air introduction port 14 on the front side is provided in a maximum opening closed by the inside / outside air switching damper 15 on the front side. Further, in this embodiment, compared with the area of the inside air introduction port 14 on the front surface of the first embodiment, 5400
It has expanded the area of mm ² . In addition, the inside air inlet 14 on the front side and the inside air inlet 14 on the rear side overlap each other in the inside air mode and completely close the two outside air inlets 13.

The operation of the outside air introduction mode is the same as that of the first embodiment. In the inside air introduction mode, the inside air introduction port 14 on the front side
The air sucked in from the inside / outside air switching damper 1 on the front side
Although there is slight air turbulence in the vicinity of 5, air is sucked into the intake 9 of the blower 3 in a substantially uniform flow. The air sucked from the inside air introduction port 14 on the rear surface is sucked into the intake port 9 of the blower 3 in a regular flow without being obstructed by the inside / outside air switching damper 15 on the front surface side. In the inside air mode, by increasing the opening area of the inside air introduction port 14 on the front surface side, it is possible to increase the air volume by about 10 m ³ / h as compared with the first embodiment.

[Modification] In the above embodiment, the inside / outside air switching case covers the entire side surface case portion.
As shown in FIG. 12, the inside / outside air switching case 12 may be provided so as to cover a part of the side surface case portion 8. In the above embodiment, an example is shown in which the axial direction of the vehicle blower unit is arranged along the traveling direction of the vehicle, but the axial direction of the vehicle blower unit is directed in the vehicle width direction, or in the vertical direction, etc. , It may be installed facing the other direction. In the above-mentioned embodiment, the example in which the inside / outside air switching case is provided in a cubic shape is shown, but it may be provided in another shape depending on the mounting space or the like.
In the above embodiments, the centrifugal blower is shown as an example of the blower, but the present invention may be applied to an axial blower.

[Brief description of drawings]

FIG. 1 is a left side cross-sectional view of a vehicle blower unit showing an outside air introduction mode (first embodiment).

FIG. 2 is a left side cross-sectional view of the vehicle blower unit showing the inside air introduction mode (first embodiment).

FIG. 3 is a top view of a vehicle blower unit (first embodiment).

FIG. 4 is a rear view of the vehicle blower unit (first embodiment).

FIG. 5 is an exploded perspective view of a scroll case and an inside / outside air switching case (first embodiment).

FIG. 6 is a graph showing the relationship between the gap and the air volume (first embodiment).

FIG. 7 is a rear view of the vehicle blower unit (second embodiment).

FIG. 8 is an upper sectional view of a vehicle blower unit (second)
Example).

FIG. 9 is a left side sectional view of a vehicle blower unit (third embodiment).

FIG. 10 is a front view of a vehicle blower unit (fourth embodiment).

FIG. 11 is a left side sectional view of a vehicle blower unit showing an inside air introduction mode (fourth embodiment).

FIG. 12 is a cross-sectional view of a vehicle blower unit (modification).

FIG. 13 is a cross-sectional view of a vehicle blower unit (prior art).

FIG. 14 is a cross-sectional view of a vehicle blower unit (prior art).

[Explanation of symbols]

1 Ventilation unit for vehicle 3 Blower 4 Inside / outside air switching means 5 Fan 6 Scroll case (fan case) 7 Electric motor 8 Side case part 9 Inlet 13 Outside air inlet 14 Inside air inlet damper 15 Inside / outside air switching damper (outside air opening / closing damper, inside air) Open / close damper)

Claims (1)

[Claims] 1. A fan case for generating an air flow, a fan case for accommodating the fan, having an inlet for taking in air sucked by the fan, and a side case part for covering a radial direction of the fan, and the fan. It has an air blower equipped with a rotationally driven motor, an outside air inlet for taking in the air outside the vehicle compartment, and an inside air inlet for taking in the air inside the vehicle compartment, and it is taken in from the outside air or the inside air inlet introduced from the outside air inlet. An inside / outside air switching means having an inside / outside air switching case for guiding the vehicle interior air to the intake port, a plate-shaped outside air opening / closing damper for opening / closing the outside air introducing port, and a plate-shaped inside / outside air opening / closing damper for opening / closing the inside air introducing port. In the vehicle blower unit, the inside / outside air switching case covers the intake port, and at least the side surface case portion is provided. A vehicle, characterized in that it is provided so as to cover a part thereof, and that the portion that covers the side case is provided with the outside air introduction port and the inside air introduction port, and stores the outside air opening / closing damper and the inside air opening / closing damper. Blower unit.