JP4323855B2 - Blower unit for vehicle air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blower unit of a vehicle air conditioner.
[0002]
[Prior art]
Prior art document information related to the blower unit of the vehicle air conditioner of the present invention includes the following.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 61-203812 [Patent Document 2]
Japanese Patent Laid-Open No. 62-124015 [0004]
The blower unit in the vehicle air conditioner described in Patent Document 1 has an intake door rotatably mounted in the first unit, and takes in the inside air or the outside air by opening and closing the inside air circulation port or the outside air introduction port. It is configured to be able to. In addition, a second unit communicates with the first unit, and a blower disposed in the second unit rotates, whereby the inside air or the outside air is blown into the vehicle interior.
[0005]
Moreover, the blower unit of the vehicle air conditioner described in Patent Document 2 is detachably mounted with a filter for collecting or deodorizing the passing air in the ventilation path between the intake air of the inside air and the outside air and the fan. It is configured to do. That is, the filter is disposed so as to be orthogonal to the flow of the internal air or the external air in the ventilation path communicating with the second unit.
[0006]
[Problems to be solved by the invention]
However, in the blower unit of the vehicle air conditioner, in addition to being provided in the vicinity of the suction opening of the second unit so that both the inside air and the outside air pass through the filter, due to the necessity of ensuring the rotation range of the intake door, There is a problem that the entire blower unit is enlarged.
[0007]
In addition, since the area of the filter (ventilation path) is larger than the suction port of the second unit, there is a problem that a portion passing through the filter is biased due to ventilation resistance, wind speed distribution, and the like, and the entire filter cannot be effectively used.
[0008]
Moreover, it is necessary to use a filter having both dust collection and deodorization characteristics. However, there is a problem that, for example, when the inside air is introduced, the period in which the filter can be used is significantly shortened by being ventilated even when there is no need for deodorization. In addition, the presence of the deodorizing filter obstructs the flow of air, resulting in resistance to ventilation, resulting in problems such as a reduction in air volume, an increase in blowing noise, and an increase in power consumption of the blower motor.
[0009]
Therefore, the present invention has an object to provide a blower unit for a vehicle air conditioner that can ventilate the entire filter and that can reduce the size of the blower unit and can realize a dust collecting and deodorizing function as desired. It is what.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the blower unit of the vehicle air conditioner of the present invention is connected to the inside air circulation port or the outside air introduction passage to which the inside air circulation passage is connected by an intake door that is rotatably mounted in the first unit . A vehicle air conditioner that opens and closes an outside air inlet and rotates a blower disposed in a second unit that communicates with the first unit via a suction port, thereby blowing inside air or outside air to the inside of the vehicle. In the blower unit of the apparatus, the intake door has a filter disposed between the opposing wall surfaces, and a vent hole is formed in each wall surface so as to cover the inside air circulation port in a first rotation state so as to allow ventilation, and a second rotation state. in first arranging portion located in said gas circulating passage, and the outside air introduction passage in the first rotating state with the second rotation state covering the outside air introduction port to breathable A filter arrangement portion having a second placement portion which is located, protruding from one wall surface of the filter arrangement portion, wherein the air circulation port in a second rotation state while closing the outside air introduction port at a first rotation state The intake door covers the second arrangement portion of the filter arrangement portion located in the outside air introduction passage in the first rotation state, and passes through the second arrangement portion from the outside air introduction passage. To prevent the flow of air to the inside air circulation passage, cover the first placement portion of the filter placement portion located in the inside air circulation passage in the second rotation state, and pass from the inside air circulation passage through the first placement portion. It is set as the structure which provided the air mixing prevention board which prevents the distribution | circulation of the air to an external air introduction channel | path .
[0011]
According to this blower unit, since the filter is arranged in the intake door, it is not necessary to provide a filter mounting structure in the first unit. Therefore, the blower unit can be reduced in size. Further, it is possible to prevent the portion passing through the filter from being biased due to ventilation resistance, wind speed distribution, and the like, and the entire filter can be effectively used. In addition, the air mixing prevention plate can reliably prevent the air from flowing between the passages connected to the inside air circulation port and the outside air introduction port.
[0012]
In the blower unit of the vehicle air conditioner, it is preferable that a filter is disposed in each of the first disposing portion and the second disposing portion . If it does in this way, it will become possible to change the characteristic of the filter arrange | positioned at an inside air circulation port and an outside air introduction port, respectively. Therefore, for example, a filter that closes the inside air circulation port that does not require deodorization has a characteristic that has only a dust collection function, thereby venting in a state that does not require deodorization and preventing the filter from being used for a shorter period of time. it can. In addition, since the air flow is not hindered by the presence of the deodorizing filter, it is possible to prevent problems such as a reduction in the air volume, an increase in blowing noise, and an increase in power consumption of the blower motor.
[0013]
In this case, it is preferable to provide a partition plate that divides the first disposing portion and the second disposing portion.
The air mixing prevention plate has a shaft portion extending in parallel with the rotation axis of the intake door, and is disposed rotatably between the first placement portion and the closing portion. A first closing plate that closes the closing portion facing the blower in the rotating state and closes the first disposing portion in the inside air circulation passage in the second rotating state, and is parallel to the rotation axis of the intake door A shaft portion extending in the direction of rotation, and rotatably disposed between the second disposing portion and the closing portion, and closing the second disposing portion in the outside air introduction passage in the first rotation state, It is preferable to have a configuration including a second closing plate that closes the closing portion facing the blower in two rotations.
In this way, it is possible to reliably prevent air from flowing between the passages connected to the inside air circulation port and the outside air introduction port.
[0014]
Furthermore, the filter disposed in the first disposition portion can be replaced in the first rotation state, and the filter disposed in the second disposition portion can be replaced in the second rotation state. Is preferred. In this way, only the filter that needs to be replaced can be easily replaced.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
1A and 1B show a vehicle air conditioner to which a blower unit 10 according to an embodiment of the present invention is applied. Here, the air conditioning apparatus ejects a high-temperature, high-pressure state by compressing the refrigerant from the compressor 1 circulates the refrigerating cycle composed of a capacitor 2, an expansion valve 3 and the evaporator 4. The refrigerant discharged from the compressor 1 is radiated by the condenser 2 and is easily vaporized by the expansion valve 3. Then, the refrigerant is vaporized by the evaporator 4 and absorbs heat from the air flowing in the air conditioning unit 5. The inside air or the outside air supplied from the blower unit 10 is cooled and dehumidified by the evaporator 4 and then divided by the mix damper 6. One of the divided air is heated by the heater core 7 to become hot air, and the other The air is mixed with the cold air and adjusted to a predetermined temperature, and blown into the vehicle from the air outlets (not shown) selected by the air outlet changing dampers 8a, 8b, and 8c. Thereby, it is a well-known thing which adjusts the inside of a vehicle to the temperature according to a driver | operator's hope.
[0017]
The blower unit 10 according to the present embodiment includes a first unit 11 and a second unit 29 made of a resin such as polypropylene, and is disposed in the lower front part of the passenger seat in the vehicle.
[0018]
The first unit 11 is formed in a mountain shape so that the upper half forms a predetermined angle, and an inside air circulation port 12 and an outside air introduction port 13 having substantially the same opening area are provided on each inclined surface, respectively. An inside air circulation passage 14 and an outside air introduction passage 15 are connected. An intake door 16 that selectively opens and closes the inside air circulation port 12 and the outside air introduction port 13 is rotatably attached to the intersection of the passages 14 and 15.
[0019]
The intake door 16 covers the inside air circulation port 12 so as to allow ventilation in the first rotation state shown in FIG. 1 (A) and allows the outside air introduction port 13 to vent in the second rotation state shown in FIG. 1 (B). The filter is provided with a T-shaped filter comprising a covering filter 19 and a closed portion 23 that closes the outside air inlet 13 in the first rotation state and closes the inside air circulation port 12 in the second rotation state. The intake door 16 has a hollow first rotating shaft 17 projecting from the center of the filter disposing portion 19 and is rotated in a range of approximately 90 degrees by driving the first rotating shaft 17 by a motor (not shown). Is configured to do. The intake door 16 is provided with a seal member (not shown) formed of a urethane seal that seals a gap between the inside air circulation passage 14 and the wall surface of the outside air introduction passage 15 at an outer edge portion thereof. Inside the first rotating shaft 17, a second rotating shaft 18 for rotating closing plates 26A and 26B described later is rotatably attached.
[0020]
As shown in FIG. 2, the filter disposing portion 19 is divided into a first disposing portion 19a covering the inside air circulation port 12 so as to allow ventilation and a second disposing portion 19b covering the outside air introduction port 13 so as to allow ventilation. 20 is partitioned. Each of the placement portions 19a and 19b is provided with a mounting port 21 for detachably mounting the filters 24A and 24B on the end surfaces thereof, and a vent port 22 having a slightly smaller outer shape than the filters 24A and 24B on the opposing wall surface. Is provided. The closing portion 23 is formed so that the amount of protrusion from the first rotating shaft 17 is the same as the dimension from the first rotating shaft 17 to one end of the filter disposing portion 19.
[0021]
The filter 24A disposed in the first disposing portion 19a is, for example, only a dust collecting filter that bends Japanese paper or a porous urethane porous sheet into a wave shape and removes dust or the like that is formed into a plate with a frame made of urethane foam. Consists of. The filter 24B disposed in the second disposing portion 19b includes, for example, a stack of the dust collection filter and a deodorizing filter that deodorizes an odor component (for example, acetaldehyde) using a deodorizing agent such as activated carbon as a plate. Consists of a dust collection deodorizing filter. The filter 24A is detachable only in the first rotation state shown in FIG. 1A, and the filter 24B is detachable only in the second rotation state shown in FIG. Mounting portions 14 a and 15 a that can be opened and closed are provided at corresponding positions of the outside air introduction passage 15. Accordingly, only the filters 24A and 24B that need to be replaced can be easily replaced. In addition, it is preferable to specify the recommended replacement time in the filters 24A and 24B.
[0022]
In addition, the intake door 16 of the present embodiment has the air in the inside air circulation passage 14 and the outside air introduction passage 15 in the first rotation state shown in FIG. 1 (A) and the second rotation state shown in FIG. 1 (B). An air mixing prevention plate 25 for preventing the circulation is provided. The air mixing prevention plate 25 includes blocking plates 26A and 26B disposed at two corners formed by the filter mounting portion 19 and the blocking portion 23 intersecting each other. As shown in FIGS. 3A and 3B, the first closing plate 26A closes one surface of the closing portion 23 facing the blower 31 disposed in the second unit 29 in the first rotation state. As shown in FIGS. 4A and 4B, the surface of the first disposing portion 19a in the filter disposing portion 19 located in the inside air circulation passage 14 is closed in the second rotation state. The intake door 16 is rotatably attached between the first disposing portion 19a and the closing portion 23 . The second closing plate 26B closes the surface of the second disposing portion 19b in the filter disposing portion 19 located in the outside air introduction passage 15 in the first rotating state, and in the second rotating state, the second unit 29 is rotatably attached to the intake door 16 between the second disposing portion 19b and the closing portion 23 so as to close the other surface of the closing portion 23 facing the blower 31 in 29.
[0023]
The closing plates 26A and 26B are provided with shaft portions 27A and 27B disposed in parallel with the second rotating shaft 18, and the shaft portions 27A and 27B and the second rotating shaft 18 are transmitted with power. Connected by mechanism. In the present embodiment, the power transmission mechanism is constituted by a belt 28 that is wound around the outer periphery of the second rotating shaft 18 and the shaft portions 27A and 27B with a predetermined tension. As a result, the second rotary shaft 18 is driven by a motor (not shown) so that the first closing plate 26A and the second closing plate 26B can be rotated in the same direction. Further, the first rotating shaft 17 of the intake door 16 and the second rotating shaft 18 for rotating the air mixing preventing plate 25 on the shaft portions 27A and 27B are interlocked with each other in the same direction, as shown in FIG. The first rotation state shown and the second rotation state shown in FIG. 1B are configured. However, when a misalignment occurs due to some cause, the misalignment can be corrected and adjusted by the individual motors of the first and second rotating shafts 17 and 18. The power transmission mechanism is not limited to the above-described configuration, and a configuration in which a gear is provided on the second rotary shaft 18 and the shaft portions 27A and 27B and a chain is provided on the three gears can be variously modified. is there.
[0024]
The second unit 29 includes a bell mouth-shaped suction port 30, and communicates with the first unit 11 through the suction port 30. A blower 31 that rotates by driving a blower motor (not shown) is disposed inside the second unit 29, and the rotation of the blower 31 causes the inside air or the outside air from the first unit 11 to pass through the air conditioning unit 5. To blow.
[0025]
Next, the operation of the blower unit 10 will be described.
[0026]
When the driver selects the inside air circulation mode by operating the operation unit of the air conditioner provided in the vehicle, the intake door 16 and the blocking plates 26A and 26B are rotated as shown in FIG. Rotating state. In the first rotation state, the first disposing portion 19a of the filter disposing portion 19 in the intake door 16 covers the inside air circulation port 12 so as to allow ventilation, and the closing portion 23 closes the outside air introducing port 13. Further, the first closing plate 26 </ b> A constituting the air mixing prevention plate 25 covers one surface of the closing portion 23, and the second closing plate 26 </ b> B covers the surface of the second disposing portion 19 b of the filter disposing portion 19.
[0027]
In this state, when the driver selects an air flow including automatic, a voltage corresponding to the air flow is applied to the blower motor, and the blower 31 rotates. As a result, the inside air in the vehicle is sucked into the blower unit 10 through the inside air circulation port 12 and is blown to the inside of the vehicle through the air conditioning unit 5. At this time, the circulated inside air is collected by passing through the filter 24A in the first disposition portion 19a covering the inside air circulation port 12.
[0028]
On the other hand, when the driver selects the outside air introduction mode, the intake door 16 and the blocking plates 26A and 26B rotate as shown in FIG. 1B to enter the second rotation state. In this second rotation state, the second disposing portion 19b of the filter disposing portion 19 in the intake door 16 covers the outside air introduction port 13 so as to allow ventilation, and the closing portion 23 closes the inside air circulation port 12. Further, the first closing plate 26 </ b> A constituting the air mixing prevention plate 25 covers the surface of the first disposing portion 19 a of the filter disposing portion 19, and the second closing plate 26 </ b> B covers the other surface of the closing portion 23.
[0029]
In this state, when the driver selects an air flow including automatic, the blower 31 rotates in the same manner as described above, so that outside air outside the vehicle is sucked into the blower unit 10 via the outside air inlet 13 and the air conditioning unit 5 is turned on. The air is blown to the inside of the vehicle. At this time, the introduced outside air is collected and deodorized by passing through the filter 24B in the second disposition portion 19b covering the outside air introduction port 13.
[0030]
As described above, according to the blower unit 10 of the present embodiment, since the filters 24A and 24B are arranged on the intake door 16, the first unit 11 does not need to be provided with a filter mounting structure. Therefore, the blower unit 10 can be reduced in size. In addition, it is possible to prevent a bias from occurring in a portion passing through the filters 24A and 24B due to ventilation resistance, wind speed distribution, and the like, and the entire filter can be effectively used.
[0031]
Further, since the filter disposing portion 19 is divided into a first disposing portion 19a and a second disposing portion 19b, and the filters 24A and 24B are disposed respectively on these, the characteristics of the filters 24A and 24B are set. Each can be changed. As a result, the filter 24A covering the inside air circulation port 12 that has no contact with the outside air and basically does not need to be deodorized has the characteristic of having only a dust collecting function, thereby allowing ventilation in a state where no deodorization is necessary. It is possible to prevent the usable period from being shortened. Furthermore, since the air flow is not hindered by the presence of the deodorizing filter, it is possible to prevent problems such as a decrease in the air volume, an increase in blowing noise, and an increase in power consumption of the blower motor.
[0032]
In addition, since the partition plate 20 is provided between the arrangement portions 19a and 19b of the filters 24A and 24B, the air flow between the passages 14 and 15 connected to the inside air circulation port 12 and the outside air introduction port 13 is ensured. Can be prevented. Further, since the intake door 16 is provided with the air mixing prevention plate 25, the air flow between the passages 14 and 15 connected to the inside air circulation port 12 and the outside air introduction port 13 can be further reliably prevented.
[0033]
In addition, the blower unit 10 of the vehicle air conditioner of the present invention is not limited to the configuration of the above embodiment, and various modifications are possible.
[0034]
For example, in the above-described embodiment, the filter disposing portion 19 is divided into the first disposing portion 19a and the second disposing portion 19b by the partition plate 20, but it is not always necessary to partition, and one continuous disposing portion is provided. It is good also as a part.
[0035]
When the filter disposing portion 19 is partitioned by the partition plate 20, the air mixing prevention plate 25 is not necessarily provided. On the contrary, when the air mixing prevention plate 25 is provided, it is not always necessary to partition the filter disposing portion 19 by the partition plate 20.
[0036]
【The invention's effect】
As is apparent from the above description, the blower unit of the vehicle air conditioner according to the present invention has a configuration in which the filter is disposed in the intake door, and the first unit does not need to have a filter mounting structure. The size of the unit itself can be reduced. In addition, by configuring in this way, it is possible to prevent the passage portion from being biased with respect to the filter due to ventilation resistance, wind speed distribution, and the like, so that the entire filter can be effectively used.
[0037]
In addition, the air mixing prevention plate provided in the intake door can reliably prevent the air from flowing through the inside air circulation passage and the outside air introduction passage through the filter arrangement portion. Furthermore, since the filter disposing portion is divided into two disposing portions so that filters having different characteristics can be disposed in the disposing portions, the total period during which the filter can be used can be lengthened. In addition, by disposing a filter corresponding to only the necessary characteristics in each disposition portion, it is possible to prevent problems such as a decrease in air volume, an increase in blowing noise, and an increase in power consumption of the blower motor.
[Brief description of the drawings]
FIG. 1 shows a blower unit of a vehicle air conditioner according to the present invention, in which (A) is a cross-sectional view showing a first rotation state, and (B) is a cross-sectional view showing a second rotation state.
FIG. 2 is an exploded perspective view of the intake door.
FIGS. 3A and 3B are perspective views showing the intake door in the first rotation state. FIGS.
4A and 4B are perspective views showing the intake door in the second rotation state. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 5 ... Air conditioning unit, 10 ... Blower unit, 11 ... 1st unit, 12 ... Inside air circulation port, 13 ... Outside air introduction port, 14 ... Inside air circulation passage, 15 ... Outside air introduction passage, 16 ... Intake door, 19 ... Filter arrangement | positioning , 19a... 1st arrangement part, 19b... 2nd arrangement part, 20... Partition plate, 23 .. obstruction part, 24A, 24B .. filter, 25 .. anti-aeration plate, 26A, 26B. 2nd unit, 30 ... suction port, 31 ... blower.

Claims (5)

An intake door attached rotatably in the first unit opens and closes an inside air circulation port connected to the inside air circulation passage or an outside air introduction port connected to the outside air introduction passage, and communicates with the first unit via a suction port. In the blower unit of the vehicle air conditioner configured to blow the inside air or outside air to the inside of the vehicle by rotating the blower disposed in the second unit,
The intake door is
A filter is disposed between the opposing wall surfaces, and vent holes are formed in each wall surface. The first air circulation port covers the room air circulation port so as to be able to vent in the first rotation state, and is positioned in the room air circulation passage in the second rotation state. An arrangement portion, and a filter arrangement portion that has a second arrangement portion that covers the outside air introduction port in a second rotation state so as to allow ventilation and is positioned in the outside air introduction passage in the first rotation state ;
And a blocking portion that protrudes from one wall surface of the filter arrangement portion, closes the outside air introduction port in the first rotation state and closes the inside air circulation port in the second rotation state,
The intake door covers the second arrangement portion of the filter arrangement portion located in the outside air introduction passage in the first rotation state, and air flows from the outside air introduction passage to the inside air circulation passage through the second arrangement portion. And the first arrangement part of the filter arrangement part located in the inside air circulation passage in the second rotation state is covered, and the flow of air from the inside air circulation path to the outside air introduction passage through the first arrangement part is prevented. A blower unit for an air conditioner for a vehicle, wherein an air mixing prevention plate is provided. The blower unit of a vehicle air conditioner according to claim 1, wherein a filter is disposed in each of the first disposing portion and the second disposing portion .   The blower unit for a vehicle air conditioner according to claim 2, further comprising a partition plate that divides the first disposing portion and the second disposing portion. The air mixing prevention plate is
A closing portion having a shaft portion extending in parallel with the rotation axis of the intake door, rotatably disposed between the first disposing portion and the closing portion, and facing the blower in the first rotating state. And a first closing plate for closing the first disposition portion in the inside air circulation passage in the second rotation state,
The has a shaft portion extending parallel to the axis of rotation of the intake door is rotatably disposed between the second placement part and the closing part, the second of the outside air introduction passage in the first rotating state with closing the 2 arrangement portion, according to any one of claims 1 to 3, characterized in that and a second closing plate for closing the blower and facing the closed portion in the second rotation state Blower unit for vehicle air conditioners. The filter disposed in the first disposition portion can be replaced in the first rotation state, and the filter disposed in the second disposition portion can be replaced in the second rotation state. The blower unit of the vehicle air conditioner according to any one of claims 2 to 4.

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