JPH11192829A - Fan unit of air conditioner for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure sufficient inside air intake amount without reducing the volume of a cabin, and facilitate work for inspection and replacement of a filter. SOLUTION: An outside air introduction opening 7 is disposed at the vehicle vertical upper side of a fan unit case 16, and an inside air introduction opening is constituted of an upper inside air introduction opening 8 disposed on the vehicle vertical upper side of the fan unit case 1, and a lower inside air introduction opening 9 disposed on vehicle vertical upper and lower sides. An adjacent glove box 4 is prevented from becoming ventilation resistance at the time of inside air introduction, thus it is possible to ensure sufficient inside air intake amount. Forming a clearance can be eliminated between the fan unit case 16 and the glove box 4, thus it is possible to install the glove box 4 on an engine compartment side by the amount corresponding to the clearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan unit for a vehicle air conditioner.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional fan unit for a vehicle air conditioner (Japanese Patent Laid-Open No. 1-1685).
No. 14).

FIG. 5 is a view showing a fan unit of a conventional automotive air conditioner. An instrument panel P is provided in front of a driver's seat, and a steering member M is horizontally mounted inside the instrument panel P.

[0004] A fan unit 400 is arranged between a dash panel 402 for dividing an engine room and a vehicle compartment and a glove box 404 below the steering member M.

[0005] An air conditioner unit (not shown) is connected to the fan unit 400 in the vehicle width direction. The width b of the instrument panel P in the vehicle longitudinal direction is determined by the width of the fan unit case 401 and the glove box 404 in the vehicle longitudinal direction.

The fan unit 400 includes a fan unit case 401, a blower fan 405 accommodated in the front of the vehicle in the vehicle longitudinal direction in the fan unit case 401, and an outside air inlet 407 for introducing outside air into the fan unit case 401. , An inside air introduction port 408 for introducing inside air into the fan unit case 401, and an opening / closing door 41 for opening and closing the inside air introduction port 408 and the outside air introduction port 407.
0, and an opening / closing door 411 that opens and closes the inside air inlet 409.

The outside air inlets 407 are located above the fan unit case 401 in the vertical direction of the vehicle.
9 are formed on the rear side of the fan unit case 401 in the vehicle front-rear direction.

[0008] A gap W is formed between the fan unit case 401 and the glove box 404.

When the open / close doors 410 and 411 are at the positions indicated by the solid lines in FIG. 5, outside air is introduced from the outside air inlet 407,
When the opening / closing doors 410 and 411 are at the positions indicated by the two-dot chain lines in FIG. 5, inside air is introduced from the inside air introduction ports 408 and 409 through the gap W.

[0010] The air introduced into the fan unit case 401 is sent to the air conditioner unit, the temperature of which is adjusted by the air conditioner unit, and then blown into the vehicle compartment.

[0011]

As described above, the inside air inlets 408 and 409 are connected to the fan unit case 4.
01 is formed on the rear side in the front-rear direction of the vehicle, and the inside air is introduced into the fan unit case 401 from the inside air inlets 408 and 409 through a gap W formed between the fan unit case 401 and the glove box 404.

Therefore, it is necessary to increase the gap W in order to secure a sufficient amount of inside air suction when the inside air circulation mode is selected.

However, in order to increase the gap W, the width b of the instrument panel P in the front-rear direction of the vehicle must be increased.

If the gap W is reduced in consideration of livability,
Not only is it not possible to ensure a sufficient amount of inside air suction, but also the suction resistance increases and a suction noise is generated.

Further, in the structure as in the conventional example, the glove box 404 must be removed when checking or replacing the clogging of the filter mounted on the inside / outside air introduction port or the front of the evaporator. There is a problem that the work for checking and replacing the filter and the like becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a problem thereof is that it is possible to secure a sufficient amount of inside air suction without reducing the interior volume of a vehicle, and to perform filter inspection and replacement. An object of the present invention is to provide a fan unit of an air conditioner for a vehicle, which can facilitate the operation.

[0017]

According to a first aspect of the present invention, there is provided a fan unit for a vehicle air conditioner, comprising: a fan unit case disposed between a dash panel and a glove box; A blower fan housed in a fan unit case, an outside air inlet provided in the fan unit case, for introducing outside air into the fan unit case, and provided in the fan unit case; A fan unit for an air conditioner for a vehicle, comprising: an inside air inlet for introducing air into the inside; and an opening / closing door for opening and closing the outside air inlet and the inside air inlet, wherein the outside air inlet is the fan unit case. It is arranged on the upper side in the vertical direction,
The inside air inlet is constituted by an upper inside air inlet arranged above the fan unit case in the vehicle up-down direction and a lower inside air inlet arranged below the vehicle up-down direction. .

The upper inside air inlet is disposed above the fan unit case in the vertical direction of the vehicle, and the lower inside air inlet is disposed below the vertical direction of the vehicle. There is no need to create a gap between the unit case and the glove box,
The glove box can be installed on the engine room side by an amount corresponding to this gap.

Further, since the filter can be attached to and detached from the vehicle compartment at the lower inside air inlet, the filter can be easily inspected and replaced without removing the glove box.

According to a second aspect of the present invention, there is provided a fan unit of an automotive air conditioner, wherein the opening and closing door opens and closes the outside air inlet and the upper inside air inlet. An upper opening / closing door,
A lower opening / closing door that opens and closes the lower inside air inlet, wherein the upper opening / closing door closes the lower inside air inlet when the upper opening / closing door closes the upper inside air inlet. The opening / closing door and the lower opening / closing door are interlocked.

It is not necessary to switch each door individually each time the inside / outside air is switched.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a fan unit of a vehicle air conditioner according to an embodiment of the present invention, FIG. 2 is a view showing a layout of the vehicle air conditioner for a vehicle, and FIG. 3 is a line AA in FIG. FIG. 4 is a conceptual diagram of an air conditioner for a vehicle.

As shown in FIGS. 1 and 2, the front seat S
An instrument panel P is provided in front of S1 and S2, and a steering member M is laid horizontally in the vehicle width direction. An air conditioner for a vehicle is arranged between a dash panel 2 that partitions an engine room E and a vehicle compartment D and a glove box 4 below the steering member M.

As shown in FIG. 4, a blower fan 5, an evaporator 19, an air mix door 21 and a heater core 20 are arranged in the unit case C of the vehicle air conditioner in order from the upstream side to the downstream side. I have.

The blower fan 5 is connected to an upper inside air inlet 8 to be described later.
And a fan for introducing air from the lower inside air inlet 9 or the outside air inlet 8.

The evaporator 19 is a heat exchanger for cooling the air from the blower fan 5.

The air mix door 21 includes a heater core 20
This is a door for adjusting the ratio of the wind that passes through and the wind that does not pass through.

The heater core 20 is a heat exchanger for heating the air from the evaporator 19.

On the upstream side of the unit case C, an upper inside air inlet 8, a lower inside air inlet 9 and an outside air inlet 7 are provided, and on the downstream side of the unit case C, a differential outlet 24, a vent outlet 25, A foot outlet 26 is provided. The upper inside air inlet 8 and the outside air inlet 7 are opened and closed doors 10.
Thus, the lower inside air inlet 9 is opened and closed by the opening and closing door 11, and the outlets 24, 25 and 26 are opened and closed by the differential door 27, the vent door 28 and the foot door 29, respectively.

The unit case C includes a fan unit case 16 for housing the blower fan 5, an evaporator 19,
The air conditioner includes an air mix door 21 and an air conditioner unit case 17 that accommodates the heater core 20.

The fan unit 1 is, as shown in FIG.
Fan unit case 16 and fan unit case 1
A blower fan 5 housed on the front side in the vehicle longitudinal direction within 6;
An upper opening / closing door 10 for opening and closing the outside air inlet 7 and the upper inside air inlet 8 and a lower opening / closing door 11 for opening and closing the lower inside air inlet 9 are provided.

The outside air inlet 7 and the upper inside air inlet 8 are formed above the fan unit case 16 in the vehicle vertical direction, and the lower inside air inlet 9 is formed below the fan unit case 1 below the vehicle vertical direction. A filter 13 is mounted downstream of the upper opening / closing door 10, and a filter 14 is mounted between the lower inside air inlet 9 and the lower opening / closing door 11.
The upper opening / closing door 10 and the lower opening / closing door 11 are connected by a link or the like (not shown), and perform opening / closing operations in conjunction with each other.

When the inside / outside air changeover switch (not shown) is switched to the inside air introduction mode, the upper opening / closing door 10 and the lower opening / closing door 1 are operated by the action of an actuator (not shown).
1 moves to the position indicated by the solid line in FIG. 3, the inside air introduction ports 8 and 9 are opened, and the outside air introduction port 7 is closed.

The inside air is introduced into the fan unit case 16 from the inside air inlets 8 and 9 by the function of the blower fan 5.

The introduced inside air is cooled when passing through the evaporator 19, and when the air mix door 21 is at the position indicated by the solid line in FIG. 4, the air passing through the evaporator 19 passes through the heater core 20.

The air is heated when passing through the heater core 20 and sent to the differential outlet 24, the vent outlet 25, and the foot outlet 26.

When the air mix door 21 is at the position indicated by the two-dot chain line in FIG. Sent to.

When the inside / outside air changeover switch is switched to the outside air introduction mode, the upper opening / closing door 10 and the lower opening / closing door 11 move to the position indicated by the two-dot chain line in FIG. 3, the outside air introduction port 7 opens, and the inside air introduction port 8 , 9 close.

According to the fan unit of the vehicle air conditioner of this embodiment, in order to secure a sufficient amount of inside air suction, the upper inside air inlet 8 is located above the fan unit case 16 in the vehicle vertical direction, and the lower inside air inlet is provided. By forming the opening 9 on the lower side of the fan unit case 16 in the vehicle vertical direction, a large gap for introducing the inside air formed between the fan unit case 16 and the glove box 4 as in the conventional example is unnecessary. So, fan unit case 16
The glove box 4 and the glove box 4 can be brought closer to each other, and the width of the instrument panel P in the vehicle front-rear direction decreases from b in FIG. 3 to B in FIG.

Further, the upper inside air inlet 8 is formed above the fan unit case 16 in the vehicle vertical direction, and the lower inside air inlet 9 is formed below the fan unit case 16 in the vertical direction of the vehicle. It is not necessary to remove the glove box 4 at the time of inspection or replacement, and workability is remarkably improved.

Further, the upper opening / closing door 10 and the lower opening / closing door 1
Since the structure in which the door 1 and the door 1 are linked to each other is adopted, it is not necessary to individually switch each of the open / close doors 10 and 11 every time the inside / outside air is switched, and the operability is improved.

[0043]

As described above, according to the fan unit of the automotive air conditioner according to the first aspect of the present invention, it is not necessary to form a gap between the fan unit case and the glove box. Since it becomes possible to install the glove box on the engine room side,
It is possible to increase the volume of the passenger compartment while securing a sufficient amount of inside air suction.

Further, inspection and replacement of the filter can be easily performed.

According to the fan unit of the vehicle air conditioner of the second aspect of the present invention, when the upper opening / closing door is opened, the lower opening / closing door is interlocked so that each opening / closing air is switched. It is not necessary to switch individually, and operability is improved.

[Brief description of the drawings]

FIG. 1 is a view showing a fan unit of an automotive air conditioner according to one embodiment of the present invention.

FIG. 2 is a diagram showing a layout of an automotive air conditioner for an automobile.

FIG. 3 is an arrow view along the line AA in FIG. 2;

FIG. 4 is a conceptual diagram of a vehicle air conditioner.

FIG. 5 is a diagram showing a fan unit of a conventional automotive air conditioner.

[Explanation of symbols]

 2 dash panel 4 glove box 5 blower fan 7 outside air inlet 8 upper inside air inlet 9 lower inside air inlet 10 upper opening / closing door 11 lower opening / closing door 13,14 filter 16 fan unit case

Claims (2)

[Claims] 1. A fan unit case disposed between a dash panel and a glove box; a blower fan accommodated in the fan unit case; and a fan unit case provided with the fan unit case to allow outside air to enter the fan unit case. An outside air introduction port for introducing, an inside air introduction port provided in the fan unit case to introduce inside air into the fan unit case, and an opening / closing door for opening and closing the outside air introduction port and the inside air introduction port. In the fan unit of the automotive air conditioner, the outside air inlet is disposed above the fan unit case in the vehicle vertical direction, and the inside air inlet is disposed above the fan unit case in the vehicle vertical direction. It is characterized by comprising an inside air inlet and a lower inside air inlet arranged on the lower side in the vehicle vertical direction. This is a fan unit for air conditioners for automobiles. 2. The upper opening / closing door, wherein the opening / closing door comprises an upper opening / closing door for opening / closing the outside air inlet and the upper inside air inlet, and a lower opening / closing door for opening / closing the lower inside air inlet. As the lower opening / closing door closes the lower inside air inlet when closing the upper inside air inlet,
The fan unit for an air conditioner for a vehicle according to claim 1, wherein the upper opening / closing door and the lower opening / closing door are linked.