JP2002331819A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle having a cross flow fan capable of improving a degree of freedom for a design. SOLUTION: A pair of cross flow fans 5A and 5B and evaporators 6A and 6B are disposed in the vehicle longitudinal direction within an air conditioning unit 1 mounted on a vehicle ceiling part of the rear seat side. Casings 2a and 3a around the fans 5A and 5B are movable types and the size of tip clearance of the casing 2 side and the casing 3 side is changed. As a result, air flow directions by the fans 5A and 5B can be changed and air blow-off ports 7A, 7B and 9 can be made to function as air suction ports.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in a one-box type automobile having a large interior space, an independent air conditioning device is provided on each of a front seat side and a rear seat side of the vehicle in order to sufficiently cool the interior of the vehicle. It has been known. In this case, the air conditioner on the rear seat side of the vehicle that is attached to the ceiling etc.
A cross-flow fan that can reduce the size and silence of the device is used. The air sucked from the front of the vehicle by the cross flow fan is cooled in the air conditioner and blown out to the rear of the vehicle.

[0003]

However, in an air conditioner having a conventional crossflow fan, the suction direction,
Since the blowing direction is fixed in one direction, design restrictions are large, and it has been difficult to realize various air conditioning patterns.

An object of the present invention is to provide an air conditioner for a vehicle having a cross flow fan capable of improving the degree of freedom in design.

[0005]

An embodiment will be described with reference to the accompanying drawings. (1) The first aspect of the present invention is to face the cross flow fans 5A, 5B disposed in the air conditioning units 1, 30, 50 via the cross flow fans 5A, 5B, and to form the air passages 4A, 5B.
The present invention is applied to a vehicle air conditioner including a pair of casings 2 and 3 forming 4B. Then, the gaps c2 and c3 between the outer peripheral portions of the cross flow fans 5A and 5B and the pair of casings 2 and 3 are connected to one of the casings so that the direction of air flow by rotation of the cross flow fans 5A and 5B can be changed. When the gap c2 (c3) with the second casing 3 (2) is large, the adjusting means 2a, 3a, 16 to 19 for increasing or decreasing the gap c3 (c2) with the other casing 3 (2) are provided. Achieve the objectives (2) According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, as shown in FIG. 4, the upstream and downstream passages 11a and 11b of the cross flow fan 5B are connected to the cross flow fan 5B. The two have a diffuser shape at the center. (3) According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the casings 2a and 3a are configured to be movable so as to increase or decrease the gap between the casings 2a and 3B. It is. (4) According to a fourth aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, as shown in FIG. 14, the cross flow fans 5A and 5B are configured to increase or decrease the gap between the casings 2 and 3. It is configured so that it can be moved to. (5) The invention of claim 5 is the vehicle air conditioner according to any one of claims 1 to 4, wherein the air conditioning units 1, 30, and
A plurality of blower fans are arranged in the
Cross flow fan 5 with variable air flow direction
A, 5B. (6) The invention according to claim 6 is the vehicle air conditioner according to any one of claims 1 to 5, wherein the air conditioning units 1, 30, and
At least two cross flow fans 5A and 5B capable of changing the flow direction of air are arranged in the inside 50, and air outlets 7A, 7B, 34A and 34B communicating with the vehicle interior are provided near these cross flow fans 5A and 5B. Are provided. (7) According to a seventh aspect of the present invention, in the vehicle air conditioner according to the sixth aspect, the air conditioning unit 1 is mounted on a vehicle ceiling such that the air outlets 7A and 7B are respectively disposed on the front side and the rear side of the vehicle. It was done. (8) The invention of claim 8 is the vehicle air conditioner according to claim 6, wherein a pair of air conditioning heat exchangers 6A, 6B are provided in the passages 4A, 4B between the cross flow fans 5A, 5B. In addition, an air outlet 9 that can communicate with the vehicle interior is provided. (9) The invention according to claim 9 is the vehicle air conditioner according to claim 6, wherein the air conditioning units 30 and 34 are arranged such that the air outlets 34A and 34B are respectively arranged on the upper side and the lower side of the vehicle.
50 is mounted on the front part of the vehicle. (10) The vehicle air conditioner according to the ninth aspect, wherein the vehicle heat exchangers 31, 32, 52, and 45 are provided in the passages 4A and 4B between the cross flow fans 5A and 5B.
53 is provided. (11) The invention according to claim 11 is the vehicle air conditioner according to claim 10, wherein the vehicle heat exchanger comprises an evaporator 31 and a heater core 32, and the evaporator 31 and the heater core 32 are connected to the air in the air conditioning unit 30. And the evaporator 31
And an air mix door 33 for adjusting the distribution amount of air to the heater core 32. (12) According to a twelfth aspect of the present invention, in the vehicle air conditioner according to the eleventh aspect, the vehicle can communicate with the passages 4A and 4B between the heat exchangers 31 and 32 and the cross flow fans 5A and 5B outside the vehicle compartment. The suction ports 35A and 35B are provided. (13) According to a thirteenth aspect of the present invention, in the vehicle air conditioner according to the tenth aspect, the vehicle heat exchanger includes an evaporator 52 and a heater core 53, and the evaporator 52 and the heater core 53 are connected to the air in the air conditioning unit 50. And an air mix door 56 that adjusts the flow rate of air that passes through and bypasses the heater core 53. (14) The invention according to claim 14 is the vehicle air conditioner according to claim 13, wherein the evaporator 52 is located on the upstream side of the heater core 53 regardless of the flow direction of the air in the air conditioning unit 50. Changing means 55 for changing
A, 55B. (15) The invention according to claim 15 is the air conditioner for a vehicle according to claim 13 or 14, wherein the suction port capable of communicating with the passages 4A and 4B between the evaporator 52 and the cross flow fans 5A and 5B outside the vehicle compartment. 54 are provided. (16) In the vehicle air conditioner according to the present invention, the flow path from the upper outlet 34A to the outside of the passenger compartment via the cross flow fan 5A and the suction port 54 when the engine is stopped. And ventilation means for driving the cross flow fan 5A in accordance with the temperature in the vehicle interior. (17) According to a seventeenth aspect, in the vehicle air conditioner according to any one of the ninth to sixteenth aspects, the upper outlet 3
4A is provided with a rectifying means 57 for changing the blowing direction.

[0006] In the section of the means for solving the above-mentioned problems, which explains the configuration of the present invention, the drawings of the embodiments are used to make the present invention easier to understand. However, the present invention is not limited to this.

[0007]

According to the present invention, the following effects can be obtained. (1) According to the first aspect of the present invention, the gap between the outer peripheral portion of the cross flow fan provided in the air conditioning unit and the pair of casings, and when the gap between one casing is large, the gap between the other casing is large. Since it is increased or decreased so as to be smaller, the flow direction of the air in the unit can be changed, and the degree of freedom in design increases. (2) According to the second aspect of the present invention, since the upstream and downstream passages of the cross flow fan have a diffuser shape centering on the cross flow fan, the same blowing characteristics can be obtained even when the direction of air flow is changed. can get. (3) According to the third aspect of the present invention, since the casing around the cross flow fan is movable, the gap between the outer peripheral portion of the fan and the casing can be easily changed. (4) According to the invention of claim 4, since the cross flow fan itself is movable, there is no need to divide the casing, and it is possible to prevent air from leaking from the casing. (5) According to the fifth aspect of the present invention, since a plurality of blower fans are provided in the air conditioning unit, at least one of which is a cross flow fan whose flow direction can be changed, the amount of air blown is adjusted. be able to. (6) According to the invention of claim 6, at least two cross flow fans whose flow direction can be changed are arranged in the air conditioning unit, and an air outlet communicating with the vehicle interior is provided near each of the cross flow fans. Therefore, the air flow in the unit can be changed in various ways. (7) According to the seventh aspect of the present invention, the air conditioning unit is mounted on the ceiling of the vehicle, and the air outlets are arranged on the front and rear sides of the vehicle. Therefore, efficient air blowing that meets the needs of the occupant is possible. (8) According to the eighth aspect of the present invention, since a pair of air conditioning heat exchangers and an air outlet that can communicate with the interior of the vehicle are provided between each cross flow fan, the temperature is adjusted via the air outlet. The blown air can be blown vigorously, and if the air flow direction is changed by a cross flow fan,
Air can be sucked into the unit through the outlet. (9) According to the ninth aspect of the invention, the air conditioning unit is mounted on the front part of the vehicle and the air outlets are arranged on the upper side and the lower side of the vehicle. The air can be blown uniformly. (10) According to the tenth aspect of the present invention, since the air conditioner heat exchanger is disposed in the passage between the cross flow fans, it is possible to blow air of which temperature is similarly adjusted from above and below the vehicle. . (11) According to the tenth aspect of the present invention, since the evaporator and the heater core are arranged in parallel with respect to the flow of air, the system ventilation resistance is small, and the power consumption can be reduced. (12) According to the twelfth aspect of the invention, since the suction port that can communicate with the outside of the vehicle compartment is provided in the passage between the cross flow fan and the heat exchanger, outside air can be introduced into the unit. (13) According to the thirteenth aspect, since the evaporator and the heater core are arranged in series with respect to the flow of air, a reheat air mix structure can be employed. (14) According to the fourteenth aspect of the present invention, since the evaporator is provided with the changing means for changing the flow path so as to be located on the upstream side of the heater core, a reheat air mix structure is possible regardless of the direction of air flow. Becomes (15) According to the fifteenth aspect, since the suction port that can communicate with the outside of the vehicle compartment is provided in the passage between the evaporator and the cross flow fan, outside air can be introduced into the unit. (16) According to the sixteenth aspect, when the engine is stopped, a flow path is formed from the upper outlet to the outside of the vehicle compartment through the cross flow fan and the suction port, and the cross passage is formed according to the temperature in the vehicle compartment. Since the flow fan is driven, high-temperature air in the vehicle compartment is discharged to the outside of the vehicle compartment, and the temperature rise in the vehicle compartment when the vehicle is left unattended can be suppressed. (17) According to the seventeenth aspect, the upper outlet is provided with:
Because we have a rectification means to change the blowing direction,
The air from the outlet can be blown toward the inside of the window glass or toward the occupant, and various air conditioning modes such as a vent mode, a bi-level mode, and a differential mode can be realized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view (viewed from the side of the vehicle) showing a configuration inside an air conditioning unit 1 of a vehicle air conditioner according to a first embodiment of the present invention, and FIG. It is a figure which shows the example of attachment to a vehicle body. As shown in FIG. 2, the air-conditioning unit 1 is attached to a ceiling plate between a second-row seat and a third-row seat of a one-box type vehicle in a vehicle front-rear direction. As shown in FIG. 1, the air-conditioning unit 1 has casings 2 and 3 which are vertically opposed to each other.
B is formed. In the passages 4A and 4B, a pair of cross flow fans 5A and 5B and evaporators 6A and 6B extending in the vehicle width direction are arranged in series in the front-rear direction symmetrically, respectively. 7A and 7B are provided respectively. A grill 8 is provided at the outlets 7A and 7B, and the blown air is rectified by the grill 8. An outlet 9 is provided in the passage 4C between the evaporators 6A and 6B so as to face downward. An openable / closable grill 10 is provided at the air outlet 9, and the passage 4 </ b> C and the vehicle interior communicate with each other through the grill 10.

FIG. 3 is a diagram showing the flow of air around the cross flow fan rotating in the direction of arrow A. The shape around the front fan 5A and the shape around the rear fan 5B are the same, and the figure shows the shape around the rear fan 5B. In FIG. 3, one of the passages 11a connected to the fan 5B is
The diffuser is formed in a substantially right angle so as to increase the blowing efficiency, and the passage area is gradually increased to form a diffuser. Also, a gap c between the fan 5B and one casing 2
2 (tip clearance) is smaller than the gap c3 between the fan 5B and the other casing 3 (c2 <c).
3). As a result, the pressure difference between the front and rear of the fan on the casing 2 side becomes larger than the pressure difference on the casing 3 side, and a vortex center is generated on the casing 3 side, and air flows in the illustrated direction.

Utilizing the above-described characteristics, if the other passage 11b of the fan 5B is formed into a diffuser shape and the gap c3 between the fan 5B and the casing 3 is formed smaller than the gap c2 between the fan 5B and the casing 2 (c2>). c
3), the pressure difference on the casing 3 side is increased, and air can be flowed in a direction opposite to that in FIG. In order to realize this, in the present embodiment, the front and rear passages 11a, 11a,
11b has a diffuser shape, and the casings 2, 3 around the fan 5B are configured to be movable as described below.

FIG. 4 is a diagram showing a configuration near the cross flow fan according to the first embodiment, and FIG.
FIG. Casing 2 around fan 5B
a and 3a are rotatable about shafts 2b and 3b, respectively. As a result, the tips of the casings 2a, 3a abut against the ends of the casings 2, 3, and the casings 2a, 3
The amount of rotation a in the direction A is regulated. The section S in FIG.
As shown in FIG. 4A, a stopper 12 is provided outside the end face of the fan 5B in the vehicle width direction so as to protrude from the outer peripheral surface of the fan 5B. As a result, the side ends of the casings 2a, 3a abut against the stopper 12, and the casings 2a, 3a
Is restricted in the B direction.

When the casings 2a and 3a rotate in the direction B in the drawing, the gap between the casing 2a and the fan 5B decreases, and the gap between the casing 3a and the fan 5B increases. Thereby, the passage 11a side (arrow F1)
Direction). At this time, as shown by the solid line, the gap between the casing 3a and the casing 3 is closed, and the leakage of air from the fan downstream side passage 11a is suppressed. On the other hand, when the casings 2a and 3a rotate in the direction A in the drawing, the gap between the casing 2a and the fan 5B increases, and the gap between the casing 3a and the fan 5B decreases. As a result, air flows toward the passage 11b (the direction of the arrow F2). At this time, as shown by the dotted line, the gap between the casing 2a and the casing 2 is closed, and the leakage of air from the fan downstream side passage 11b is suppressed.

The casings 2a and 3a are specifically driven as follows. FIG. 6 is a perspective view of a main part of the air conditioning unit 1 according to the first embodiment. Air conditioning unit 1
A motor 14 for driving a fan is attached to the side wall 13 of the, and an actuator 16 for driving the casing is attached to the opposite side wall 15.

FIGS. 7 and 8 are a side view and a front view, respectively, showing a state in which the actuator 16 is mounted. Casing 2
The rotating shafts 2b and 3b of the a and 3a pass through the side wall 15 and are connected to the links 17 and 18, respectively. Links 17, 18
Are provided with gears 17a and 18a, respectively.
a, 18a are meshed with the gear 19, respectively. The rotation shaft of the gear 19 is connected to the actuator 16, and the actuator 16 is fixed to the side wall 15 with screws 20. Thereby, the gear 19 is rotated by the drive of the actuator 16, the shafts 2b and 3b are rotated via the links 17 and 18, and the casings 2a and 3a are simultaneously rotated in the direction A or B in FIG. .

Next, the operation of the vehicle air conditioner according to the first embodiment will be described with reference to FIG. The actuator 16 is driven by, for example, a switch operation, whereby the casings 2a and 3a are driven as shown in FIGS. At the same time, the grill 10 is opened and closed as shown.

In FIG. 1A, the tip clearance on the casing 2 side of the front fan 5A and the casing 2 side of the rear fan 5B is set small, and the grill 10 is opened. Thereby, when the fans 5A and 5B rotate, air is sucked into the passage 4C via the grill 10. The sucked air is branched in the front-back direction, passes through the evaporators 6A and 6B, and is cooled and dehumidified.
Air is blown from the outlets 7A and 7B toward the second and third rows. As a result, the entire passenger compartment is cooled. in this case,
The blowing capacity of each fan 5A, 5B is determined by the rotation speed of the fans 5A, 5B and the size of the chip clearance,
By appropriately changing these, the amount of air blown from the outlets 7A and 7B can be adjusted.

In FIG. 1B, the chip clearance of the casing 5 of the fan 5A and the casing 2 of the fan 5B are shown.
The tip clearance on the side is set small and the grill 10
Is closed. Thereby, the air sucked in from the front outlet 7A is cooled by passing through the evaporators 6A and 6B sequentially, and is blown from the rear outlet 7B. As a result, lower-temperature air can be sent to the third row. 1B, if the tip clearance on the casing 2 side of the fan 5A and the tip clearance on the casing 3 side of the fan 5B are set small, the cooling air can be blown to the second row.

FIG. 9 shows the air volume characteristics of the cross flow fans 5A and 5B, that is, the relationship between the air volume and the pressure. In the figure, a characteristic S1 indicates the airflow characteristic of the fan alone, a characteristic S2 indicates the airflow characteristic when the fans 5A and 5B are arranged in series, and a characteristic S3 indicates the system airflow resistance. Thus, the air volume Q2 when the fans 5A and 5B are arranged in series is larger than the air volume Q1 when the fans are used alone.
Therefore, in FIG. 1B, more cooling air can be blown from the blower opening 7B.

In FIG. 1C, the grill 10 is opened in contrast to FIG. 1B. Here, when the blowing capacity of the rear fan 5B is larger than the blowing capacity of the front fan 5A, the air sucked in through the outlet 7A and the air sucked through the grill 10 as shown in the figure. They merge in the passage 4C and are blown out from the outlet 7B. On the other hand, when the blowing capacity of the front fan 5A is larger than the blowing capacity of the rear fan 5B, part of the air sucked in through the outlet 7A is blown out of the grill 10 and the rest is blown out of the outlet 7B. It is blown from. In this way, the front and rear fans 5A, 5
By making a difference in the air blowing capacity of B, the grill 10 can be used as both an inlet and an outlet.

In FIG. 1D, the tip clearances on the casing 3 side of the fan 5A and the casing 3 side of the fan 5B are set small, and the grill 10 is opened. Thereby, the air sucked from the outlets 7A and 7B on both sides is cooled by passing through the evaporators 6A and 6B, respectively, and is blown from the grill 10. That is, the cooling air is blown toward the occupant vigorously.

The fans 5A and 5B may be driven on one side only. FIG. 10 shows the relationship between the driving and stopping of the fans 5A and 5B and the blowing direction. In FIG. 10, the rear fan 5
B is driven only, and the tip clearance c2 of the fan 5B and the casing 2 is changed to the tip clearance c3 of the casing 3.
When it is set smaller, the air is sucked in from the grill 10 and is blown from the outlet 7B (10a). On the contrary, when the tip clearance c3 between the fan 5B and the casing 3 is set smaller, the outlet 7
Air is sucked in from B and blown from grill 10 (10b). On the other hand, when only the front fan 5A is driven and the tip clearance c3 between the fan 5A and the casing 3 is set smaller, air is sucked in from the outlet 7A and blown from the grill 10 (10c). Fan 5
When A and the tip clearance c2 of the casing 2 are set smaller, air is sucked from the grill 10,
Air is blown from the outlet 7A (10d). In FIG. 10, the flow of air when both the fans 5A and 5B are driven is the same as in FIG. 1, and the description is omitted.

As described above, according to the first embodiment, the casings 2a and 3a around the fans 5A and 5B are made movable, and the size of the chip clearance of the fans 5A and 5B can be changed. The flow direction of the air inside can be easily changed, and the degree of freedom in design increases. In this case, if the links 17 and 18 are used, the casing 2
a, 3a can be easily moved. In addition, fans 5A and 5B
Since the shape of the passage before and after the fans 5A and 5B around the center is both diffuser-shaped, similar blowing characteristics can be obtained even when the flow direction of air is changed. Furthermore, two cross flow fans 5A and 5B whose flow direction can be changed are incorporated in the unit, so that when combined with the openable and closable grill 10, the air flow in the unit 1 can be changed in various ways. Can be. In this case, if the fans 5A and 5B are arranged in series as shown in FIG. 1, the amount of air blown from the outlet 7A or 7B can be increased.

Further, such a cross flow fan 5
The air-conditioning unit 1 having A and 5B is mounted on the ceiling between the second and third rows of the one-box type car, and the outlets 7A and 7B are provided in the vehicle front-rear direction. The blown air can be selectively blown to the second and third rows, so that efficient blowing can be performed to meet the needs of the occupants. Further, since the pair of evaporators 6A and 6B are arranged in series with the pair of fans 5A and 5B in the unit 1, a large amount of air can be heat-exchanged by the two evaporators 6A and 6B, and high cooling performance is obtained. be able to. Furthermore, the passage 4 between the evaporators 6A and 6B
C is provided with an openable and closable grill 10, so that if air is sucked in from the grill 10, cooling air can be simultaneously blown into the second and third rows.
If air is sucked in from A and 7B, the cooling air can be blown from the grill 10 vigorously.

Further, as described above, the air conditioning unit 1
Since it is mounted on the ceiling between the third and third rows and is separated from the occupants in the first row, even when the air conditioner is activated, the noise is not so noticeable. In addition, the cross flow fan 5A,
Since 5B is used, air can be uniformly blown from the outlets 7A and 7B in the vehicle width direction, and the device can be made smaller, quieter, and save power.

-Second Embodiment- A second embodiment of the present invention will be described with reference to FIG. In the following, differences from the first embodiment will be mainly described. In the first embodiment, the air conditioning unit 1 is mounted on the ceiling of the vehicle. In the second embodiment, the air conditioning unit 1 is mounted inside the instrument panel at the front of the vehicle in the vertical direction of the vehicle.

FIG. 11 is a side view (view from the side of the vehicle) showing the configuration of an air conditioning unit 30 according to the second embodiment. The same parts as those in FIG. 1 are denoted by the same reference numerals. An evaporator 31 and a heater core 32 extending in the vehicle width direction are arranged in a substantially V-shape at the center of the air conditioning unit 30 in the vertical direction.
Are rotatably disposed. The air mix door 33 is rotated in conjunction with operation of a temperature adjustment dial (not shown). Cross-flow fans 5A, 5B are disposed in these upper and lower passages 4A, 4B, respectively.
The surrounding casings 2a and 3a are movable as in the first embodiment. Outlets 34A and 34B are provided at the ends of the passages 4A and 4B, respectively. Openable and closable doors 35A and 35B are provided in the passage 4A below the fan 5A and the passage 4B above the fan 5B, respectively, and the passages 4A and 4B are provided through the doors 35A and 35B.
Communicates outside the cabin.

Next, the operation of the second embodiment will be described. During heating, as shown in FIG. 11A, the door 35A is opened, the door 35B is closed, and the clearance of the fan 5B on the casing 3 side is set small. When the fan 5B is driven in this state, the door 35
Air is sucked into the passage 4A via A, and the sucked air is partially cooled through the evaporator 31 according to the opening degree of the air mixing door 33, and the rest is heated through the heater core 32. You. The cooling air and the heating air are joined in the upstream passage 4B of the fan 5B,
The air is mixed by the rotation of B, and is blown from the outlet 34B toward the feet of the occupant.

During cooling, as shown in FIG.
While the door 35A is closed and the door 35B is opened,
The clearance on the casing 3 side of the fan 5A is set small. When the fan 5A is driven in this state, air is sucked into the passage 4B through the door 35B, and the sucked air passes through the evaporator 31 or the heater core 32 according to the opening degree of the air mixing door 33, and is cooled. Is heated. The cooling air and the heated air are joined in the upstream passage 4A of the fan 5A, mixed by the rotation of the fan 5A, and sent from the outlet 34A toward, for example, the upper part of the occupant.

Next, during rapid heating (full hot), as shown in FIG. 11C, the door 35A is opened and the door 35B is closed, and the casing 2 of the fan 5A and the casing of the fan 5B are closed. The tip clearance on the third side is set small, and the air passage on the evaporator 31 side is closed by the air mix door 33. When the fans 5A and 5B are driven in this state, air is sucked into the passage 4A through the door 35A and the air outlet 34A, and the total amount of the sucked air is reduced by the heater core 32.
And is heated and blown from the outlet 34B. In this case, the ventilation area of the heat exchanger is determined when air is distributed to the evaporator 31 and the heater core 32 (FIG. 11).
11 (A) and FIG. 11 (B)), and the system ventilation resistance increases. However, since the upper and lower fans 5A and 5B are driven simultaneously, a sufficient air volume can be secured against the system ventilation resistance. .

When rapid cooling (full cooling) is performed, FIG.
As shown in FIG. 1 (D), the door 35A is closed and the door 35B is closed.
Is opened, the tip clearances on the casing 3 side of the fan 5A and the casing 2 side of the fan 5B are set small, and the air mixing door 33 closes the air passage on the heater core 32 side. When the fans 5A and 5B are driven in this state, air is sucked into the passage 4B through the door 35B and the outlet 34B,
The whole amount of the sucked air passes through the evaporator 31, is cooled, and is blown from the outlet 34A. Also in this case, since the upper and lower fans 5A and 5B are driven, a sufficient air volume can be secured.

As described above, according to the second embodiment, a pair of cross flow fans 5A, 5 whose air blowing directions can be changed.
B is disposed in the vehicle vertical direction at the front part of the vehicle, and the air outlets 34A, 34
Since the 4B is provided, air can be uniformly blown from the front part of the vehicle to the upper part and the lower part in the vehicle cabin in the vehicle width direction. Further, since the evaporator 31 and the heater core 32 are arranged between the fans 5A and 5B, the temperature of the air blown from the outlet 34A and the temperature of the blown air from the outlet 34B can be similarly adjusted.

Further, the evaporator 31 and the heater core 3
2 arranged in parallel, low system ventilation resistance,
Power consumption can be reduced. In this case, the upper and lower fans 5A and 5B are simultaneously driven during rapid heating and rapid cooling, so that a sufficient air volume can be secured even when the ventilation resistance increases. Furthermore, the evaporator 31,
Since the doors 35A and 35B that can be opened and closed are provided in the passages 4A and 4B above and below the heater core 32, the unit 3
The outside air can be introduced into the inside.

Third Embodiment A third embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the evaporator 3
1 and the heater core 32 are arranged in parallel in the passage in the air conditioning unit 30, but in the third embodiment, they are arranged in series. FIG. 12 is a side view illustrating a configuration of an air conditioning unit 50 according to the third embodiment, and FIG. 13 is a diagram illustrating an example of attachment of the air conditioning unit 50 to a vehicle body.
The same parts as those in FIG. 11 are denoted by the same reference numerals, and the differences will be mainly described below. As shown in FIG.
The air conditioning unit 50 is mounted inside the instrument panel 51 at the front of the vehicle. Note that this is the same as the mounting position of the air conditioning unit 30 of the second embodiment.

As shown in FIG. 12, an evaporator 52 is disposed vertically between the fans 5A and 5B, and a heater core 53 is disposed at a right angle to the evaporator 52 behind the evaporator 52. An opening 54 is provided in front of the evaporator 52, and the inside of the unit 50 communicates with the outside of the vehicle compartment via the opening 54. Switching doors 55A and 55B movable in the vehicle front-rear direction are provided above and below the evaporator 52, respectively, and the passages 4A and 4B communicate with the front side or the rear side of the evaporator 52 by the movement of the doors 55A and 55B. An air mix door 56 slidable in the vehicle front-rear direction between the evaporator 52 and the heater core 53.
Is provided, and the ratio of the air passing through and bypassing the heater core 53 is adjusted according to the sliding amount of the door 56.

Next, the operation of the third embodiment will be described. For example, when a warm-up (rapid heating) is instructed by a switch operation of the occupant, as shown in FIG. 12A, the switching door 55A is moved to the rear of the vehicle, the switching door 55B is moved to the front of the vehicle, and the air The mix door 56 is slid to the lowest position. Further, the casing 2 side of the fan 5A and the casing 3 of the fan 5B
Side chip clearance is set small. When the fans 5A and 5B are driven in this state, air is sucked into the unit 50 through the outlet 34A and the opening 54, and the sucked air passes through the evaporator 52 to be cooled and dehumidified. Thereafter, the entire amount of air is supplied to the heater core 53.
, And is blown from the outlet 34B toward the feet of the occupant. In this case, the amount of air blown from the opening 54 changes according to the traveling wind pressure. If the sliding amount of the air mix door 56 is adjusted in the state of FIG.
The temperature-adjusted air is blown below the feet, and a foot mode can be realized.

When the bi-level mode is commanded, FIG.
As shown in (B), the switching door 55A is moved to the rear of the vehicle, the switching door 55B is moved to the front of the vehicle, and the casing 3 of the fan 5A and the casing 3 of the fan 5B are moved.
Side chip clearance is set small. At this time, the air mix door 56 is slid according to the temperature set by a temperature adjustment dial or the like. When the fans 5A and 5B are driven in this state, air is sucked into the unit 50 through the opening 54, and a part of the air flows into the passage 4A by bypassing the evaporator 52, and the outlet 34
It is sent from A. A flow straightening plate 57 (FIG. 1)
3) is provided. The direction of the current plate 57 is adjusted so that air is blown from the outlet 34A to the upper part of the occupant by driving of an actuator (not shown). Thereby, relatively cool outside air is blown toward the upper part of the occupant. The current plate 57 may be manually adjusted.

The remainder of the air sucked into the unit 50 passes through the evaporator 52 and is cooled, and then a part of the air is heated through the heater core 53 according to the degree of opening of the air mixing door 56, and the rest is heated by the heater core. Bypass 53. The air that has passed and bypassed the heater core 53 passes through the passage 4.
B and are mixed by the rotation of the fan 5B,
Air is blown from the outlet 34b. As a result, warm air whose temperature has been adjusted is sent through the heater core toward the feet of the occupant.

When the cooling air after passing through the evaporator 52 is blown to the upper part of the occupant at the time of the bi-level, FIG.
From the state (B), the switching door 55A is moved to the front of the vehicle. Thereby, the air sucked from the opening 54 passes through the evaporator 52, and a part of the air is blown from the outlet 34A. In this case, in order to secure the warm air from the outlet 34b, the air mix door 56 is connected as shown in FIG.
What is necessary is just to slide a little below the state of.

When cool down (rapid cooling) is commanded, as shown in FIG. 12C, the switching door 55A is moved to the front of the vehicle, the switching door 55B is moved to the rear of the vehicle, and the air mix door 56 is moved. Is slid down. In addition, the tip clearances on the casing 3 side of the fan 5A and the casing 2 side of the fan 5B are set small. When the fans 5A and 5B are driven in this state, the unit 5 is connected via the air outlet 34B and the opening 54.
The air is sucked into the air, and the sucked air passes through the evaporator 52 to be cooled and dehumidified. Thereafter, the entire amount of the cooling air bypasses the heater core 53 and the outlet 34A
From the occupant. FIG.
If the sliding amount of the air mix door 56 is adjusted in the state (C), the temperature-adjusted air is blown toward the occupant, and the vent mode can be realized.

When the differential mode is instructed, FIG.
As shown in the figure, while the air mix door 56 is slid to the uppermost position from the above-described cool down state,
The direction of the current plate 57 is adjusted so that the air is blown toward the window glass. When the fans 5A and 5B are driven in this state, the air sucked in through the outlet 34B and the opening 54 becomes the evaporator 52 and the heater core 53.
Are sequentially passed through to be dehumidified and heated, and hot air is blown toward the inside of the window glass. Thereby, fogging of the window glass can be removed.

The air conditioner for a vehicle according to the third embodiment further has a ventilator for performing automatic ventilation when the vehicle is left unattended (when the engine is stopped). As shown in FIG. 12E, when the engine is stopped, the switching door 55A is moved to the rear of the vehicle, the switching door 55b is moved to the front of the vehicle, and the air mix door 56 is slid to the lowest position. Further, the tip clearance of the fan 5A on the casing 2 side is set small. At this time, when the vehicle interior temperature rises above a predetermined value, the ventilator is activated, and the fan 5A is driven. Thereby, air is sucked in from the outlet 34A and is blown from the opening 54. As a result, if the air temperature around the instrument panel rises due to sunlight or the like passing through the window glass when the vehicle is left under the scorching sun, this high-temperature air is discharged out of the vehicle compartment, and the temperature rise in the vehicle compartment can be suppressed. it can. In this case, the cross flow fan 5A can be driven with low power, and its driving source may be a battery, an external power supply, a solar cell, or the like.

As described above, in the third embodiment, unlike the second embodiment, the evaporator 52 and the heater core 53
Are arranged in series with respect to the flow of air, so that a so-called reheat air mix structure in which the cooled and dehumidified air is heated to adjust the temperature can be employed. In this case, since the upper and lower fans 5A and 5B are simultaneously driven, a sufficient air volume can be secured against the system airflow resistance. In addition, since the rectifying plate 57 is provided in the upper outlet 34A and the direction of air flow from the outlet 34A can be changed, various air conditioning modes such as a foot mode, a vent mode, a bi-level mode, and a differential mode can be realized. it can. Further, switching doors 55A and 55B movable in the front-rear direction of the vehicle are provided,
A, 4B and the front side or the rear side of the evaporator 52 are communicated with each other, so that the evaporator 52 can always be located upstream of the heater core 53, and a reheat air mix structure can be realized regardless of the blowing direction. Furthermore, since the fan 5A is automatically driven under the scorching sun to discharge the high-temperature air in the vehicle interior to the outside of the vehicle interior, the temperature increase in the vehicle interior can be suppressed.

In the above description, the casings 2a and 3a are made variable so that the tip clearances of the fans 5A and 5B and the casings 2 and 3 are changed. However, as shown in FIG. The tip clearance may be changed by moving the rotation axis.
This can prevent air from leaking from the casings 2 and 3. In this case, the fan driving motor 14 (FIG. 6)
Is movably mounted on the side wall 13 and the motor 1
A rack may be provided on the casing 4 and a pinion gear may be provided on the side wall 13 side, and the motor 14 may be moved by a rack and pinion method.

In the above-described embodiment, the two cross flow fans 5A, which can change the flow direction, are provided in the unit.
Although 5B is provided, it may be one or three or more.
Further, the flow direction may be used in combination with a cross flow fan fixed in one direction. In this case, for example, the direction of air flow by the cross flow fan 5A in FIG. 1 is fixed as shown in FIG. As a result, the outlet 7A is exclusively used for blowing, but the amount of air can be adjusted by changing the flow direction of the fan 5B. Furthermore, the cross flow fans 5A and 5B may be used in combination with another fan (for example, a sirocco fan).

In the above embodiment and the claims, the casings 2a and 3a, the actuator 16, the links 17, 18 and the gear 19 serve as adjusting means, and the switching door 55A,
55B constitutes the changing means, and the rectifying plate 57 constitutes the rectifying means.

[Brief description of the drawings]

FIG. 1 is a side view of an air conditioning unit of a vehicle air conditioner according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example in which the air conditioning unit according to the first embodiment is mounted on a vehicle.

FIG. 3 is a diagram showing a flow of air around a cross flow fan incorporated in the air conditioning unit according to the first embodiment.

FIG. 4 is a diagram showing a configuration near a cross flow fan incorporated in the air conditioning unit according to the first embodiment.

FIG. 5 is an enlarged view of a main part of FIG. 4;

FIG. 6 is an essential part perspective view of the air conditioning unit according to the first embodiment.

FIG. 7 is a side view showing an attached state of a casing driving actuator constituting the air conditioning unit according to the first embodiment.

FIG. 8 is a front view showing an attached state of an actuator for driving the casing.

FIG. 9 is a view showing air volume characteristics of a cross flow fan.

FIG. 10 is a view for explaining an example of the operation of the vehicle air conditioner according to the first embodiment.

FIG. 11 is a side view of an air conditioning unit of a vehicle air conditioner according to a second embodiment of the present invention.

FIG. 12 is a side view of an air conditioning unit of a vehicle air conditioner according to a third embodiment of the present invention.

FIG. 13 is a diagram showing an example of mounting an air conditioning unit according to a third embodiment on a vehicle.

FIG. 14 is a diagram showing a modification of FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Air-conditioning unit 2, 3 Casing 2a, 3a Movable casing 4A, 4B Passage 5A, 5B Cross flow fan 6A, 6B Evaporator 7A, 7B Outlet 9 Outlet 11a, 11b Passage (diffuser) 16 Actuator 17, 18 Link 19 Gear 30 Air conditioning unit 31 Evaporator 32 Heater core 33 Air mix door 34A, 34B Air outlet 35A, 35B Door 50 Air conditioning unit 52 Evaporator 53 Heater core 54 Opening 55A, 55B Switching door 56 Air mix door 57 Rectifying plate

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60H 1/00 B60H 1/00 102L 102P 102R 1/24 661 1/24 661Z 1/34 611 1/34 611Z

Claims (17)

[Claims] 1. A vehicle air conditioner comprising: a cross flow fan disposed in an air conditioning unit; and a pair of casings facing each other via the cross flow fan and forming an air passage. The gap between the outer periphery of the cross flow fan and the pair of casings is changed so that the direction of air flow by rotation of the cross flow fan can be changed.When the gap between one casing is large, the gap between the other casing is small. An air conditioner for a vehicle, comprising an adjusting means for increasing or decreasing the air conditioner. 2. The vehicle air conditioner according to claim 1, wherein the upstream and downstream passages of the crossflow fan are
An air conditioner for a vehicle, wherein the cross flow fan and the center have a diffuser shape. 3. The air conditioner for a vehicle according to claim 1, wherein the casing is configured to be movable so as to increase or decrease a gap between the casing and the cross flow fan. . 4. The air conditioner for a vehicle according to claim 1, wherein the cross flow fan is configured to be movable so as to increase or decrease a gap with the casing. . 5. The vehicle air conditioner according to claim 1, wherein a plurality of blower fans are provided in the air conditioner unit, and at least one of the blower fans can change a flow direction of air. An air conditioner for a vehicle, wherein the cross flow fan is used. 6. The vehicle air conditioner according to claim 1, wherein at least two cross flow fans capable of changing a flow direction of air are provided in the air conditioning unit, An air conditioner for a vehicle, wherein air outlets that communicate with the interior of the vehicle are provided near the cross flow fan. 7. The vehicle air conditioner according to claim 6, wherein the air conditioning unit is mounted on a ceiling of the vehicle such that the air outlets are disposed on a front side and a rear side of the vehicle, respectively. Air conditioner. 8. The vehicle air conditioner according to claim 6, wherein a pair of air conditioning heat exchangers are provided in a passage between the cross flow fans, and an air outlet that can communicate with the vehicle interior is provided. An air conditioner for a vehicle, comprising: 9. The vehicle air conditioner according to claim 6, wherein the air conditioning unit is mounted on a front portion of the vehicle such that the air outlets are arranged on an upper side and a lower side of the vehicle, respectively. Air conditioner. 10. The vehicle air conditioner according to claim 9, wherein a vehicle heat exchanger is provided in a passage between the cross flow fans. 11. The vehicle air conditioner according to claim 10, wherein the vehicle heat exchanger includes an evaporator and a heater core, wherein the evaporator and the heater core are arranged in parallel with a flow of air in the air conditioning unit. An air conditioner for a vehicle, wherein an air mix door is provided for adjusting the distribution amount of air to the evaporator and the heater core. 12. The air conditioner for a vehicle according to claim 11, wherein a passage between the heat exchanger and the cross flow fan includes:
An air conditioner for a vehicle, wherein a suction port capable of communicating outside the vehicle compartment is provided. 13. The air conditioner for a vehicle according to claim 10, wherein the heat exchanger for a vehicle includes an evaporator and a heater core, wherein the evaporator and the heater core are connected in series to a flow of air in the air conditioning unit. An air conditioner for a vehicle, wherein an air mix door is provided for adjusting a flow rate of air passing through and bypassing the heater core. 14. A vehicle air conditioner according to claim 13, wherein said evaporator changes a flow path such that said evaporator is located upstream of said heater core regardless of a flow direction of air in said air conditioning unit. An air conditioner for a vehicle, comprising: 15. The vehicle air conditioner according to claim 13, wherein a suction port that can communicate with the outside of the vehicle compartment is provided in a passage between the evaporator and the cross flow fan. apparatus. 16. The vehicle air conditioner according to claim 15, wherein, when the engine is stopped, a flow path is formed from the upper outlet to the outside of the passenger compartment through the cross flow fan and the suction port. An air conditioner for a vehicle, comprising ventilation means for driving the cross flow fan according to the temperature in the vehicle interior. 17. The air conditioner for a vehicle according to claim 9, further comprising a rectifying means for changing a blowing direction at the upper outlet.