JP3820537B2 - Automotive air conditioner fan unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fan unit for an automotive air conditioner.
[0002]
[Prior art]
As a fan unit of a conventional automobile air conditioner, one shown in FIG. 5 is known (Japanese Patent Laid-Open No. 1-168514).
[0003]
FIG. 5 is a view showing a fan unit of a conventional automobile air conditioner, in which an instrument panel P is provided on the front side of the driver's seat, and a steering member M is horizontally installed therein.
[0004]
A fan unit 400 is disposed between a dash panel 402 that partitions the engine room and the 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 vehicle front-rear width b of the instrument panel P is determined by the vehicle front-rear width of the fan unit case 401 and the glove box 404.
[0006]
The fan unit 400 includes a fan unit case 401, a blower fan 405 housed in the front-rear direction of the vehicle in the fan unit case 401, an outside air inlet 407 for introducing outside air into the fan unit case 401, Inside air introduction ports 408 and 409 for introduction into the fan unit case 401, an opening / closing door 410 for opening / closing the inside air introduction port 408 and the outside air introduction port 407, and an opening / closing door 411 for opening / closing the inside air introduction port 409 are provided. .
[0007]
The outside air introduction port 407 is formed on the upper side of the fan unit case 401 in the vehicle vertical direction, and the inside air introduction ports 408 and 409 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.
[0009]
When the open / close doors 410 and 411 are at the position of the solid line in FIG. 5, outside air is introduced from the outside air introduction port 407, and when the open / close doors 410 and 411 are at the position of the two-dot chain line in FIG. Inside air is introduced from 408 and 409.
[0010]
The air introduced into the fan unit case 401 is sent to the air conditioner unit, adjusted in temperature by the air conditioner unit, and then blown into the passenger compartment.
[0011]
[Problems to be solved by the invention]
Incidentally, as described above, the inside air inlets 408 and 409 are formed on the rear side in the vehicle front-rear direction of the fan unit case 401, and the inside air passes through the gap W formed between the fan unit case 401 and the glove box 404. It is introduced into the fan unit case 401 through the introduction ports 408 and 409.
[0012]
Therefore, it is necessary to increase the gap W in order to ensure a sufficient amount of intake of the inside air when the inside air circulation mode is selected.
[0013]
However, in order to increase the gap W, the vehicle front-rear direction width b of the instrument panel P must be increased. However, this reduces the vehicle interior volume and lowers the comfortability.
[0014]
If the gap W is made small in order to give priority to the comfort, not only a sufficient amount of inside air suction can be secured, but also the suction resistance becomes high and suction noise is generated.
[0015]
Also, in the structure as in the conventional example, the glove box 404 must be removed when performing inspection or replacement work such as clogging of the filter mounted on the front surface of the inside / outside air introduction port or the evaporator. There is a problem that the work for inspection and replacement becomes complicated.
[0016]
The present invention has been made in view of such circumstances, and the problem thereof is that it is possible to secure a sufficient amount of inside air suction without reducing the volume of the passenger compartment, and to facilitate work for inspection and replacement of the filter. It is providing the fan unit of the air conditioner for motor vehicles which can be made.
[0017]
[Means for Solving the Problems]
A fan unit of an automotive air conditioner according to claim 1 for solving the above-described problem includes a fan unit case disposed between a dash panel and a glove box, and air blown in the fan unit case. A fan, an outside air introduction port provided in the fan unit case for introducing outside air into the fan unit case, and an inside air introduction provided in the fan unit case for introducing inside air into the fan unit case In a fan unit of an automotive air conditioner provided with an opening and an open / close door that opens and closes the outside air inlet and the inside air inlet, the blower fan is disposed such that its drive shaft is along the vehicle longitudinal direction, The outside air introduction port is disposed above the fan unit case in the vehicle vertical direction, and the inside air introduction port is the fan. In the vehicle vertical direction upper side of the knit cases, been and is disposed in the glove box side than the blade portion of the blowing fan, and an upper inside air inlet is open toward the vehicle vertical direction upper side, in the vehicle vertical direction lower side, and It is characterized by comprising a lower inside air inlet that is disposed closer to the glove box than the blade portion of the blower fan and opens downward in the vehicle vertical direction .
[0018]
Since the upper inside air inlet is arranged on the upper side of the fan unit case in the vertical direction of the vehicle and the lower side air inlet is arranged on the lower side of the vehicle in the vertical direction, it is possible to secure a sufficient amount of inside air and There is no need to form a gap with the glove box, and the glove box can be installed on the engine room side corresponding to the gap.
[0019]
Further, since the filter can be attached to and detached from the passenger compartment at the lower inside air inlet, the filter can be easily inspected and replaced without removing the glove box.
[0020]
A fan unit for an automotive air conditioner according to a second aspect of the present invention is the fan unit of the automotive air conditioner according to the first aspect, wherein the open / close door opens and closes the outside air inlet and the upper inside air inlet. A door and a lower open / close door that opens and closes the lower internal air inlet, and the lower open / close door closes the lower internal air inlet when the upper open / close door closes the upper internal air inlet The upper opening / closing door and the lower opening / closing door are interlocked with each other.
[0021]
There is no need to switch each open / close door individually each time the inside / outside air is switched.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
FIG. 1 is a diagram showing a fan unit of an automotive air conditioner according to an embodiment of the present invention, FIG. 2 is a diagram showing a layout of the automotive air conditioner for the automobile, and FIG. 3 is an arrow along the line AA in FIG. FIG. 4 is a conceptual diagram of an automotive air conditioner.
[0024]
As shown in FIGS. 1 and 2, an instrument panel P is provided in front of the front seats S1 and S2, and a steering member M is horizontally mounted in the interior thereof. An automotive air conditioner is arranged between the dash panel 2 that partitions the engine room E and the vehicle compartment D and the glove box 4 below the steering member M.
[0025]
As shown in FIG. 4, a blower fan 5, an evaporator 19, an air mix door 21, and a heater core 20 are disposed in order from the upstream side to the downstream side in the unit case C of the automotive air conditioner.
[0026]
The blower fan 5 is a fan for introducing air from an upper inside air introduction port 8 and a lower inside air introduction port 9 or an outside air introduction port 8 which will be described later.
[0027]
The evaporator 19 is a heat exchanger for cooling the air from the blower fan 5.
[0028]
The air mix door 21 is a door for adjusting the ratio of the wind that passes the heater core 20 and the wind that does not pass.
[0029]
The heater core 20 is a heat exchanger for heating the air from the evaporator 19.
[0030]
The upper side air inlet 8, the lower side air inlet 9, and the outside air inlet 7 are provided on the upstream side of the unit case C, and the differential outlet 24, the vent outlet 25, and the foot outlet are provided on the downstream side of the unit case C. 26 is provided. The upper inside air introduction port 8 and the outside air introduction port 7 are opened and closed by an opening / closing door 10, the lower side inside air introduction port 9 is opened / closed by an opening / closing door 11, and the outlets 24, 25 and 26 are respectively opened by a differential door 27, a vent door 28 and a foot door 29. Opened and closed.
[0031]
The unit case C includes a fan unit case 16 that houses the blower fan 5, and an air conditioner unit case 17 that houses the evaporator 19, the air mix door 21, and the heater core 20.
[0032]
As shown in FIG. 3, the fan unit 1 opens and closes a fan unit case 16, a blower fan 5 housed on the front side in the vehicle front-rear direction in the fan unit case 16, an outside air introduction port 7, and an upper inside air introduction port 8. An upper opening / closing door 10 and a lower opening / closing door 11 for opening / closing the lower inside air inlet 9 are provided.
[0033]
The outside air introduction port 7 and the upper inside air introduction port 8 are formed on the upper side of the fan unit case 16 in the vehicle vertical direction, and the lower side air introduction port 9 is formed on the lower side of the fan unit case 1 in the vehicle vertical direction. A filter 13 is attached downstream of the upper opening / closing door 10, and a filter 14 is attached 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 an opening / closing operation in conjunction with each other.
[0034]
When an 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 11 are moved to the positions indicated by solid lines in FIG. 9 opens and the outside air inlet 7 closes.
[0035]
Inside air is introduced into the fan unit case 16 from the inside air introduction ports 8 and 9 by the action of the blower fan 5.
[0036]
The introduced inside air is cooled when it passes through the evaporator 19, and when the air mix door 21 is at the position of the solid line in FIG. 4, the air that has passed through the evaporator 19 passes through the heater core 20.
[0037]
The air is warmed when passing through the heater core 20 and is sent to the differential outlet 24, the vent outlet 25 and the foot outlet 26.
[0038]
When the air mix door 21 is at the position of the two-dot chain line in FIG. 4, the air that has passed through the evaporator 19 does not pass through the heater core 20, but is sent directly to the differential outlet 24, vent outlet 25, and foot outlet 26. It is done.
[0039]
When the inside / outside air changeover switch is switched to the outside air introduction mode, the upper door 10 and the lower door 11 are moved to the position of the two-dot chain line in FIG. 3, the outside air inlet 7 is opened, and the inside air inlets 8, 9 are opened. close.
[0040]
According to the fan unit of the air conditioner for automobiles of this embodiment, in order to ensure a sufficient amount of intake of the inside air, the upper inside air introduction port 8 is located above the fan unit case 16 in the vehicle vertical direction, and the lower inside air introduction port 9 is provided. By forming the fan unit case 16 on the lower side of the vehicle in the 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. The unit case 16 and the glove box 4 can be brought close to each other, and the width in the vehicle front-rear direction of the instrument panel P is reduced from b in FIG. 3 to B in the same figure, and the volume of the compartment D is increased.
[0041]
Further, the upper inside air inlet 8 is formed on the upper side of the fan unit case 16 in the vehicle vertical direction, and the lower side air inlet 9 is formed on the lower side of the fan unit case 16 in the vehicle vertical direction. When performing the operation, it is not necessary to remove the glove box 4, and the workability is remarkably improved.
[0042]
Further, since the structure in which the upper opening / closing door 10 and the lower opening / closing door 11 are interlocked is adopted, it is not necessary to individually switch the opening / closing doors 10 and 11 every time the inside / outside air is switched, and the operability is improved.
[0043]
【The invention's effect】
As described above, according to the fan unit of the automotive air conditioner of the first aspect of the present invention, there is no need to form a gap between the fan unit case and the glove box, and the glove box is disposed in the engine room by an amount corresponding to the gap. Since it can be installed on the side, it is possible to increase the volume of the passenger compartment while securing a sufficient amount of inside air suction.
[0044]
In addition, the filter can be easily inspected and replaced.
[0045]
According to the fan unit of the automotive air conditioner of the second aspect of the invention, since the lower door is opened when the upper door is opened, the doors are individually switched each time the inside / outside air is switched. This eliminates the need for improved operability.
[Brief description of the drawings]
FIG. 1 is a diagram showing a fan unit of an automotive air conditioner according to an 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 taken along the line AA in FIG. 2;
FIG. 4 is a conceptual diagram of an automotive air conditioner.
FIG. 5 is a diagram showing a fan unit of a conventional automobile 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 door 11 Lower door 13 and 14 Filter 16 Fan unit case

Claims (2)

A fan unit case disposed between the dash panel and the glove box, a blower fan accommodated in the fan unit case, and an outside air provided in the fan unit case for introducing outside air into the fan unit case An automobile having an introduction port, an inside air introduction port provided in the fan unit case for introducing inside air into the fan unit case, and an open / close door that opens and closes the inside air introduction port by the outside air introduction port In the fan unit of the air conditioner, the blower fan is disposed such that its drive shaft is along the vehicle front-rear direction, the outside air introduction port is disposed on the vehicle vertical direction upper side of the fan unit case, and the inside air introduction port is wherein the vehicle vertical direction upper side of the fan unit case, and the than the blade portion of the blower fan Gurobubo Arranged box side, and an upper inside air inlet is open toward the vehicle vertical direction upper side, in the vehicle vertical direction lower side, is and disposed in the glove box side than the blade portion of the blower fan, and the vertical direction of the vehicle A fan unit for an air conditioner for an automobile, characterized by comprising a lower inside air inlet opening downward .   The open / close door includes an upper open / close door that opens and closes the outside air introduction port and the upper inside air introduction port, and a lower open / close door that opens and closes the lower inside air introduction port, and the upper open / close door introduces the upper inside air introduction port. 2. The air conditioner for an automobile according to claim 1, wherein the upper opening / closing door and the lower opening / closing door are interlocked so that the lower opening / closing door closes the lower inside air inlet when the opening is closed. The fan unit of the device.

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