JPH11192830A - Fan unit of air-conditioner for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply shortage of an air suction amount without increasing the output of a blowing fan. SOLUTION: A sheet lining S is provided only for the outside air introduction opening closure surface 5a of one opening and closing door 5 for opening and closing an inside air introduction opening 4 and an outside air introduction opening 3. When the opening and closing door 5 closes the inside air introduction opening 4, inside air is introduced into a fan unit case 1 through a clearance formed between the inside air introduction opening 4 and an inside air introduction opening closure surface 5b of the opening and closing door 5, thus it is possible to ensure a sufficient suction amount of air at the time of outside air introduction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan unit of a vehicle air conditioner, and more particularly to a fan unit of a vehicle air conditioner suitable for a one-box car.

[0002]

2. Description of the Related Art FIG. 4 is a view showing a fan unit of a conventional automotive air conditioner.

[0003] This fan unit has a blower fan 407.
, A fan unit case 401, an inside air inlet 404 formed in the fan unit case 401 for introducing inside air, and a fan unit case 401,
It has an outside air inlet 403 for introducing outside air, and one opening / closing door 405 provided in the fan unit case 401 for opening and closing the inside air inlet 404 and the outside air inlet 403.

When the opening / closing door 405 closes the inside air introduction port 404 (when the opening / closing door 405 is at the position indicated by the solid line in FIG. 4), when the blower fan 407 operates, the outside air introduction port 4 is closed.
From outside 03, outside air is introduced into the fan unit case 401.

When the opening / closing door 405 closes the outside air introduction port 403 (when the opening / closing door 405 is at the position indicated by the two-dot chain line in FIG. 4), when the blower fan 407 operates, the inside air flows from the inside air introduction port 404 to the fan unit. It is introduced into the case 401.

[0006]

The fan unit case 401 of the fan unit is disposed between a dash panel for dividing an engine room and a vehicle compartment and a glove box below the steering member M.

In order to increase the volume of the passenger compartment in order to enhance the comfort, the width of the fan unit case 401 and the glove box in the longitudinal direction of the vehicle must be reduced.

However, if the width of the fan unit case 401 in the front-rear direction of the vehicle is reduced in consideration of the livability, the opening area of the outside air inlet 403 is reduced, and a sufficient amount of air cannot be obtained. On the other hand, if the output of the blower fan 407 is increased to obtain a sufficient suction amount, a problem arises in that the suction noise increases.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object thereof is to provide a fan unit of an air conditioner for a vehicle which can compensate for a shortage of air suction without increasing the output of a blower fan. It is to be.

[0010]

According to a first aspect of the present invention, there is provided a fan unit of a vehicle air conditioner, comprising: a fan unit case accommodating a blower fan;
An inside air inlet formed in the fan unit case, for introducing inside air, and formed in the fan unit case;
In a fan unit for an automotive air conditioner, comprising: an outside air introduction port for introducing outside air; and an opening / closing door provided in the fan unit case and opening and closing the inside air introduction port and the outside air introduction port. The seat lining is provided only on the inlet closing surface.

When the opening / closing door closes the inside air introduction port, the inside air is introduced into the fan unit case through a gap formed between the inside air introduction port and the inside air introduction port closing surface. A large suction amount can be obtained.

According to a second aspect of the present invention, there is provided a fan unit of an air conditioner for a vehicle, wherein the fan unit case houses a blower fan, an inside air inlet formed in the fan unit case to introduce inside air, and the fan unit case. Formed in the outside air introduction port for introducing outside air, provided in the fan unit case, an opening and closing door for opening and closing the inside air introduction port and the outside air introduction fan unit of the automotive air conditioner, The fan unit case is characterized in that an auxiliary inside air inlet for constantly introducing inside air is formed.

Not only when the opening / closing door closes the inside air introduction port but also when the outside air introduction port is closed, the inside air is introduced into the fan unit case through the supplemental inside air introduction port, and sufficient air is sucked. The amount is obtained.

[0014]

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

FIG. 1 is a diagram showing a fan unit of a vehicle air conditioner according to a first embodiment of the present invention, and FIG. 2 is a conceptual diagram showing a vehicle air conditioner.

The automotive air conditioner includes a fan unit 2 and an air conditioner unit 12.

The fan unit 2 has a fan unit case 1 and a blower fan 5 housed in the fan unit case 1.

The fan unit case 1 has an outside air inlet 3 for introducing outside air into the fan unit case 1.
And an inside air inlet 4 for introducing inside air into the fan unit case 1.

The outside air inlet closing surface 5a of the opening / closing door 5 is provided with a sheet lining S, and the inside air inlet closing surface 5b is not provided with a sheet lining S.

The air conditioner unit 12 includes an air conditioner unit case 13, an evaporator 9 for cooling air from the blower fan 7, a heater core 11 for heating air from the evaporator 9, and a wind passing through the heater core 11. An air mix door 14 for adjusting the ratio of the air that is not allowed to pass therethrough, and a differential door 20, a vent door 21, and a foot door 22 for opening and closing the differential air outlet 17, vent air outlet 18, and foot air outlet 19, respectively, are provided.

The air conditioner unit case 13 has an air mix door 14, a differential outlet 17 and a vent outlet 18.
And a foot outlet 19 are formed.

When an inside / outside air changeover switch (not shown) is switched to the inside air introduction mode, the opening / closing door 5 is moved to the position indicated by the two-dot chain line in FIGS. Open and the outside air inlet 3 closes.

The inside air is introduced into the fan unit case 1 from the inside air inlet 4 by the function of the blower fan 7.

Since the sheet lining S is provided on the outside air inlet closing surface 5a of the opening and closing door 5, the outside air inlet closing surface 5a of the opening and closing door 5 and the outside air inlet 3 are sealed, and the inside of the fan unit case 2 is sealed. Only shyness is introduced.

The introduced inside air is cooled when passing through the evaporator 9, and when the air mix door 14 is at the position indicated by the solid line in FIG. 2, the air passing through the evaporator 9 passes through the heater core 11.

The air is heated when passing through the heater core 11 and is sent to the differential outlet 17, the vent outlet 18, and the foot outlet 19.

When the air mix door 14 is at the position indicated by the two-dot chain line in FIG. 2, the air that has passed through the evaporator 9 does not pass through the heater core 11 but directly passes through the differential outlet 17, the vent outlet 18, and the foot outlet 19. Sent to.

When the inside / outside air changeover switch is switched to the outside air introduction mode, the opening / closing door 5 moves to the position indicated by the solid line in FIGS. 1 and 2, the outside air introduction port 3 opens, and the inside air introduction port 4 closes.

At this time, the outside air is introduced into the fan unit case 2 from the outside air introduction port 3, but since the inside air introduction port closing surface 5b of the opening / closing door 5 is not provided with the sheet lining S, the inside air introduction port 4 Inside air is introduced into the fan unit case 1 through a gap G formed between the inside air introduction port closing surface 5b.

According to the fan unit 2 of the automotive air conditioner of the first embodiment, since the sheet lining S is provided only on the outside air inlet closing surface 5a of the opening and closing door 5,
When the opening / closing door 5 closes the inside air inlet 4, the inside air inlet 4 is closed.
The inside air is also introduced into the fan unit case 2 through a gap G formed between the fan unit case 2 and the inside air introduction port closing surface 10b,
A sufficient amount of air is obtained. Therefore, the width of the fan unit case 2 in the front-rear direction of the vehicle (the left-right direction in FIG. 1) can be reduced, and the volume of the passenger compartment can be increased, and it is not necessary to increase the output of the blower fan 7. The suction noise does not increase.

FIG. 3 is a view showing a fan unit of an automotive air conditioner according to a second embodiment of the present invention.

Portions common to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the first embodiment, the seat lining is provided only on the outside air inlet closing surface 5a of the opening / closing door 5, but in the second embodiment, the seat lining is also provided on the inside air inlet closing surface 5b of the opening / closing door 5. The lining S was applied, and a replenishing inside air inlet 30 for constantly introducing inside air to the fan unit case 1 was formed.

The opening area of the replenishing inside air inlet 30 is about 30% of the opening area of the outside air inlet 3.

According to the fan unit of the automotive air conditioner of the second embodiment, not only when the opening / closing door 5 closes the inside air inlet 4 but also when the outside air inlet 3 is closed,
Inside air is introduced into the fan unit case 1 through the supplementary inside air inlet 30, and a sufficient amount of air is obtained. Therefore, according to the second embodiment, the same effects as those of the first embodiment can be obtained.

[0036]

As described above, according to the fan unit of the automotive air conditioner according to the first aspect of the present invention, when the opening / closing door closes the inside air inlet, the space between the inside air inlet and the inside air inlet closing surface is closed. Inside air is introduced into the fan unit case through the gap formed in the fan unit case, and a sufficient amount of air can be sucked in when introducing outside air, so that the width of the fan unit case in the vehicle front-rear direction can be reduced, and Since the volume can be increased and the output of the blower fan does not need to be increased, the suction noise does not increase.

According to the fan unit of the vehicle air conditioner of the second aspect, the inside air is supplied not only when the opening / closing door closes the inside air inlet but also when the outside air inlet is closed. Since it is introduced into the fan unit case through the mouth and a sufficient amount of air is obtained, the width of the fan unit case in the longitudinal direction of the vehicle can be reduced without increasing the output of the blowing fan, The cabin volume can be increased.

[Brief description of the drawings]

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

FIG. 2 is a conceptual diagram of a vehicle air conditioner.

FIG. 3 is a view showing a fan unit of an automotive air conditioner according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a fan unit of a conventional automotive air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan unit case 3 Outside air inlet 4 Inside air inlet 5 Opening / closing door 5a Outside air inlet closing surface 5b Inside air inlet closing surface 7 Blower fan G Gap S Sea lining

Claims (2)

[Claims] A fan unit case accommodating a blower fan; an inside air inlet formed in the fan unit case for introducing inside air; an outside air inlet formed on the fan unit case for introducing outside air; A fan unit for an automotive air conditioner, which is provided in a fan unit case and has an opening / closing door for opening and closing the inside air inlet and the outside air inlet, wherein a sheet lining is provided only on an outside air inlet closing surface of the opening / closing door. A fan unit for an air conditioner for a vehicle, wherein the fan unit is used. 2. A fan unit case accommodating a blower fan, an inside air inlet formed in the fan unit case and introducing inside air, an outside air inlet formed in the fan unit case and introducing outside air, A fan unit for an automotive air conditioner, which is provided in a fan unit case and includes an opening / closing door for opening and closing the inside air inlet and the outside air inlet, wherein an auxiliary inside air inlet for constantly introducing inside air to the fan unit case. A fan unit for an automotive air conditioner, wherein a fan unit is formed.