JPH05131846A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To insert a split air filter easily into an air duct constrained in the height direction of a ventilation passage. CONSTITUTION:A filter insert opening 31 for inserting an upper and a lower part filters 7, 8 completely divided into two parts one by one from the width direction of a ventilation flue is formed on the bottom wall 6 side of the side wall 3 of a unit case 19. Protruding parts for guiding the upper and lower part filters 7, 8 in the width and height directions of the ventilation flue are formed on the inner surface of the unit case 19, and a locking groove for locking the upper part filter 7 is formed at the top wall 5 of the unit case 19. Fitting grooves 77, 78, 88 for sliding on the protruding parts are formed at the upper and lower part filters 7, 8, and urethane foam group packing is fitted to the upper center part of the upper part filter 7. The upper and lower part filters 7, 8 can be thereby inserted easily into the unit case 19 from the width direction of the ventilation flue.

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.

[0002]

2. Description of the Related Art Conventionally, an air conditioner for a vehicle in which a blower, a cooler unit, and a heater unit are arranged in the width direction of the vehicle is attached to an evaporator with dust, dirt, and the like.
Further, for the purpose of preventing a bad odor, an air filter is inserted into the ventilation passage through an insertion opening formed on the bottom wall of the unit case. Also, when there is not enough space between the bottom wall of the unit case and the floor of the vehicle (for example, Japanese Patent Laid-Open No.
(1996) discloses a split type air filter in which a plurality of partial filters divided in the height direction of the ventilation passage are connected by a flexible member. This split-type air filter is designed so that a plurality of partial filters are inserted into the ventilation passage from the lower side of the ventilation passage through the insertion opening formed on the bottom wall of the unit case so that they are stacked in the height direction of the ventilation passage. It was done. However, in the center-placed air conditioner in which the blower, the cooler unit, and the heater unit are arranged in the longitudinal direction or the height direction of the air passage, there is almost no space between the bottom wall of the unit case and the floor of the vehicle,
Even if the split type air filter is adopted, it is difficult to insert the air filter from the lower side of the ventilation passage through the insertion opening formed in the bottom wall of the unit case. For the purpose of solving this problem, an air conditioner in which a split type air filter is inserted into the air passage through an insertion opening formed in the lateral wall of the unit case is conceivable.

[0003]

However, in the center-placed air conditioner, there is a space limitation in the height direction of the ventilation passage, so that the insertion port cannot be formed over the entire height of the ventilation passage. Therefore, the split type air filters are inserted so as to be stacked from the width direction of the air passage in the height direction of the air passage, as described above, when the partial filters are connected by the flexible member. It was difficult with an air filter. An object of the present invention is to provide a vehicle air conditioner in which a split type air filter can be easily inserted into a ventilation duct having a restriction in the height direction of a ventilation path.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a ventilation duct that forms a ventilation passage through which air flows and a plurality of divided partial filters are stacked in the height direction of the ventilation passage, and the inside of the ventilation passage is closed. And a split type air filter for filtering flowing air, the blower duct is provided on the bottom side of the lateral wall,
An insertion opening for inserting the plurality of partial filters one by one from the width direction of the ventilation passage, a guide portion for guiding the plurality of partial filters in the height direction of the ventilation passage, and a bottommost side in the ventilation passage. A technical means having a locking portion for locking the partial filters other than the inserted partial filter at a fixed position in the height direction of the ventilation passage is adopted.

[0005]

According to the present invention, a plurality of partial filters constituting a split type filter are inserted one by one into the ventilation passage through the insertion openings formed on the bottom side of the lateral wall, and the guide portions guide the plurality of partial filters to the ventilation passage. Arrange them so that they are stacked in the height direction.
At this time, the locking part locks the partial filters except the partial filter inserted in the bottom of the ventilation passage at a fixed position in the height direction of the ventilation passage. The partial filter to be inserted into can be easily installed in the ventilation passage.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle air conditioner of the present invention will be described based on the embodiments shown in the drawings. 1 to 6 show a first embodiment of the present invention. FIG. 1 is a diagram showing a main part of an automobile air conditioner, and FIG. 2 is a diagram showing an entire structure of the automobile air conditioner. The vehicle air conditioner 1 includes an evaporator 12 that heats the air blown by a blower 11 and a refrigerant passing through the inside to cool the air, and the air blown by the blower 11 and the engine cooling water passing through the inside. And a heater core 13 that heats air by exchanging heat. In addition, the air conditioning apparatus 1 for a vehicle includes a blower duct 14 for sending air into the passenger compartment, covers 15 and 16 that cover the opening of the blower duct 14, and a split-type air that is assembled in the blower duct 14. The filter 17 is assembled.

The air duct 2 has an air passage 2 formed therein, and a blower case 18 for accommodating the blower 11,
It is composed of a unit case 19 that houses the evaporator 12 and the heater core 13. As shown in FIGS. 3 and 4, the unit case 19 has a substantially rectangular shape, and includes a pair of lateral walls 3, 4, a top wall 5, and a bottom wall 6 so as to surround the ventilation passage 2. Have.

The lateral wall 3 is shorter than the dimension of the ventilation passage 2 in the height direction, and is formed on the bottom wall 6 side due to restrictions such as the structure of the vehicle. The filter insertion port 31 is located on the top wall 5 side of the filter insertion port 31. It has a protruding portion 32 formed on the inner surface and a plurality of hook-shaped portions 33 formed near the filter insertion opening 31. The filter insertion port 31 has a split air filter 1
7 is an opening to be inserted into the ventilation path 2.

The lateral wall 4 has an evaporator insertion opening 41 shorter than the dimension of the ventilation passage 2 in the height direction, a protrusion 42 formed on the inner surface of the evaporator insertion opening 41 on the top wall 5 side, and the vicinity of the evaporator insertion opening 41. It has a plurality of hook-shaped portions 43 formed in. The evaporator insertion opening 41 is an opening for inserting the evaporator 12 into the air passage 2. The ceiling wall 5 has a convex portion 51 protruding in the height direction of the ventilation passage 2,
A locking groove 52 is formed on the inner surface of the convex portion 51. The locking groove 52 is a locking portion of the present invention, and locks the upper partial filter 7 at a fixed position in the height direction of the air passage 2.
The bottom wall 6 has, on its inner surface, a protrusion 61 that fits into the split air filter 17. Fitting portions 62 and 63 to which the covers 15 and 16 are fitted are provided on both side portions of the bottom wall 6 which are outside the ventilation passage 2. The ridges 32, 42, 61 form the guide portion of the present invention.

The cover 15 is formed in the recess 21 into which the knobs 73 and 83 of the split air filter 17 are fitted, the rib portion 22 fitted into the fitting portion 62 formed in the bottom wall 6, and the lateral wall 3. The filter insertion port 3 formed in the lateral wall 3 has the locked portion 23 that is locked by the plurality of hook-shaped portions 33.
Cover 1 In addition, 24 is a foaming urethane type packing. The cover 16 has substantially the same structure as the cover 15, has a recess 25 into which the knobs 74 and 84 of the split air filter 17 are fitted, and covers the evaporator insertion port 41 formed in the lateral wall 4.

The split type air filter 17 is inserted into the unit case 19 on the upstream side of the evaporator 12 to prevent a bad odor and prevent dust and dirt from adhering to the evaporator 12. The split type air filter 17 is arranged on the top wall 5 side of the unit case 19 and has an upper end portion fitted in the locking groove 52 and an upper part filter 7 arranged on the bottom wall 6 side of the unit case 19. Partial filter 8
It consists of The upper partial filter 7 is composed of an element 71 and a frame 72 as shown in FIG. The element 71 is made of activated carbon fiber, non-woven fabric or the like having a honeycomb structure. Frame 7
2 has a substantially rectangular shape, and has knobs 73 and 74 fitted into recesses 21 and 25 formed in the covers 15 and 16, and a shaft 75 protruding toward the cover 15. further,
The frame body 72 includes the connecting plate 7 protruding in the height direction of the ventilation passage 2.
6, fitting grooves 77 and 78 that are slidably fitted to the protrusions 32 and 42, and a fitting groove 79 formed on the lower surface. A round hole 70 is formed in the connecting plate 76. In addition, 26 is a foaming urethane type packing fitted in the upper center part of the frame 72.

The lower part filter 8 is a unit case 1
It is stacked with the upper partial filter 7 in 9 and is composed of an element 81 and a frame body 82 as shown in FIG. The element 81 has a honeycomb structure of activated carbon fiber, non-woven fabric, or the like. Frame 82
Has a substantially rectangular shape, and is inserted into the round holes 70 formed in the connecting plate 76 by protruding the knobs 83 and 84 fitted into the recesses 21 and 25 formed in the covers 15 and 16 and the cover 16 side. Has a shaft 85 that is Further, the frame 82
Is a connecting plate 86 projecting in the height direction of the ventilation passage 2, a protruding portion 87 which is fitted on a fitting groove 79 formed on the upper partial filter 7 on the upper surface, and a protrusion formed on the bottom wall 6 on the lower surface. It has a fitting groove 88 that is slidably fitted in the line portion 61. The connecting plate 86 is formed with a round hole 89 into which the shaft 75 formed in the upper partial filter 7 is inserted.

A method of assembling the split air filter 17 into the unit case 19 will be described with reference to FIGS. As shown in FIG. 3, the upper partial filter 7 (see FIG. 5) in which the packing 26 is fitted in the upper central portion is
The knob 74 formed on the frame body 72 is inserted into the ventilation passage 2 through the filter insertion port 31 formed on the lateral wall 3 with the knob 74 at the top. At this time, the fitting groove 79 formed in the frame body 72 is slid on the protruding portion 61 formed in the bottom wall 6 and the ventilation passage is formed until the knob 74 projects from the evaporator insertion opening 41 formed in the lateral wall 4. Insert in the width direction of 2. Then, the upper partial filter 7 is attached to the fitting grooves 77, 7 formed in the frame 72.
When 8 is moved to the upper side of the ventilation passage 2 while being fitted to the protrusions 32 and 42, the packing 26 is inserted into the locking groove 52 formed in the top wall 5, and as shown in FIG. The repulsive force of the packing 26 holds the upper partial filter 7 in place. Therefore, when the lower partial filter 8 is inserted, the upper partial filter 7 does not drop even if the upper partial filter 7 is released, and the lower partial filter 8 can be easily inserted with one hand, and It is possible to prevent the upper partial filter 7 from rattling.

Next, the lower partial filter 8 (see FIG. 6)
As shown in FIG. 4, the ventilation passage 2 is provided through the filter insertion opening 31 with the knob 84 formed on the frame body 82 at the head.
Insert inside. At this time, the protrusion 87 formed on the frame body 82 is slid in the fitting groove 79 while being fitted in the fitting groove 79 formed in the upper partial filter 7, and at the same time, the fitting groove 88.
While sliding on the ridge portion 61 in a state of being fitted to the ridge portion 61, it is inserted in the width direction of the ventilation passage 2 until the knob 84 projects from the evaporator insertion opening 41 formed in the lateral wall 4. Then, as shown in FIG.
The shaft 85 is inserted into the round hole 70 formed in the connecting plate 76, and the shaft 75 formed in the upper partial filter 7 is inserted into the round hole 89. Therefore, the upper and lower partial filters 7 and 8 which are completely divided into two can be easily inserted into the unit case 19 where there is a restriction in the height direction of the air passage 2, and further tightening work or the like can be performed. Instead, it can be positioned and fixed with a simple structure. By using the structure of the split type air filter 17,
It goes without saying that the replacement work will be easy.

Further, as shown in FIGS. 1 and 2, by inserting the rib portion 22 of the cover 15 and the rib portion (not shown) of the cover 16 into the fitting portions 62 and 63, the filter insertion port 31 and Knobs 73, 74, 8 protruding in the width direction of the ventilation passage 2 from the evaporator insertion opening 41
Since the parts 3 and 84 are fixed in the recesses 21 and 25 with one touch, the upper and lower partial filters 7 and 8 can be positioned and fixed more reliably. In addition, these covers 1
The inexpensive seal structure of 5 and 16 can prevent leakage of drain water from the evaporator 12.

7 to 11 show a second embodiment of the present invention, and FIG. 7 shows a unit case. The unit case 101 of this embodiment is vertically divided into two parts. The lateral wall 103 is a filter insertion opening 131 formed on the bottom wall 106 side, and the top wall 1 of the filter insertion opening 131.
It has a protrusion 132 formed on the inner surface on the 05 side and a locking claw 133 formed near the filter insertion opening 131. The side wall 104 of the unit case 101 is provided with the ventilation passage 10
2 has a ridge portion 141 formed over the entire height. A ridge portion 161 is formed on the inner surface of the bottom wall 106.

FIG. 8 is a diagram showing the upper partial filter. The upper partial filter 107 includes the locked portion 171 and the protruding portion 1 that are locked by the locking claw 133 formed on the lateral wall 103.
Fitting groove 17 slidably fitted to 32 and 141
2, 173, and a fitting groove 174 formed on the lower surface. FIG. 9 is a diagram showing the lower partial filter. The lower partial filter 108 has an upper partial filter 107 on the upper surface.
Protruding portion 18 fitted into the fitting groove 174 formed in the
1, a fitting groove 182 that is slidably fitted to a protrusion 161 formed on the bottom wall 106 on the lower surface, and the lateral wall 104.
Fitting groove 18 to be fitted to the protruding portion 141 formed on the
Have three.

The assembling method of this embodiment will be briefly described with reference to FIGS. Upper part filter 1
07 (see FIG. 8) is inserted into the ventilation passage 102 through the filter insertion opening 131, as shown in FIG.
4 is slid on the protruding portion 161 formed on the bottom wall 106, and is inserted in the width direction of the ventilation passage 102 until it abuts on the lateral wall 104. Then, the upper partial filter 107 is fitted into the fitting groove 17
2, 173 are fitted to the ridges 132, 141 and are moved until they come into contact with the ceiling wall 105 of the ventilation passage 2,
As shown in FIG. 1, the locked portion 171 is locked by the locking claw 133 so that the upper partial filter 107 is held at a fixed position.

Next, as shown in FIG. 11, the lower partial filter 108 (see FIG. 9) is inserted into the filter insertion port 131.
Further, it is inserted into the ventilation passage 102, and the projection 181 is slid in the fitting groove 174 with the fitting groove 174 formed in the lower partial filter 108, and at the same time, the fitting groove 182 is projected. While sliding on the ridge portion 161 in a state of being fitted to the portion 161, it is inserted in the width direction of the ventilation passage 102 until it abuts on the lateral wall 104. Further, as shown in FIG. 11, the cover 1
By inserting 15 into the filter insertion opening 131,
The repulsive force of the packing 126 positions and fixes the upper and lower partial filters 107 and 108.

FIGS. 12 and 13 show the third embodiment of the present invention and are views showing the main parts of the unit case and the upper partial filter. In this embodiment, the plate 2 protruding from the side wall 204 of the unit case toward the ventilation passage 202 side
The upper part filter 207 is fixed by the repulsive force of the spring structure part 272 by bringing 41 and the spring structure part 272 formed in the frame 271 of the upper part filter 207 into contact with each other. In addition, 242 is a ridge part, and 2
Reference numeral 73 is a fitting groove that fits into the protrusion 242.

FIG. 14 shows the fourth embodiment of the present invention and is a view showing the main part of a unit case. In this embodiment, the width of the protruding portion 341 of the lateral wall 304 of the unit case is increased toward the upper side of the ventilation passage so that the upper partial filter moves toward the upper side of the ventilation passage. The contact pressure with the fitting groove was increased, and the upper partial filter was fixed.

FIG. 15 shows the fifth embodiment of the present invention and is a diagram showing a partial filter. When the partial filter is inserted through the filter insertion opening formed on the bottom side of the lateral wall of the unit case, when the insertion space in the width direction of the ventilation passage cannot be obtained as two complete divided products as in the first embodiment. By making the partial filter 401 into a bent shape, insertion work can be performed in a small space.

In this embodiment, the split-type air filter is a complete two-piece split product, but the split-type air filter may be a complete three-piece split product or more. In this embodiment, the split air filter is attached to the upstream side of the evaporator,
It may be attached to the inside air inlet or outside air inlet of the air conditioner, or may be attached to the air purifier.

[0024]

According to the present invention, the split type air filter can be easily inserted into the ventilation duct having a restriction in the height direction of the ventilation passage.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of an automobile air conditioner according to a first embodiment.

FIG. 2 is a schematic diagram showing the overall structure of an automobile air conditioner according to the first embodiment.

FIG. 3 is a cross-sectional view showing a method for assembling the upper partial filter according to the first embodiment into the cooler unit case.

FIG. 4 is a cross-sectional view showing a method for assembling the lower partial filter according to the first embodiment into the cooler unit case.

FIG. 5 is a perspective view showing an upper partial filter according to the first embodiment.

FIG. 6 is a perspective view showing a lower partial filter according to the first embodiment.

FIG. 7 is a perspective view showing a unit case according to a second embodiment.

FIG. 8 is a perspective view showing an upper partial filter according to a second embodiment.

FIG. 9 is a perspective view showing a lower partial filter according to a second embodiment.

FIG. 10 is a sectional view showing a method for assembling the upper partial filter according to the second embodiment into the unit case.

FIG. 11 is a cross-sectional view showing a method for assembling the lower partial filter according to the second embodiment into the unit case.

FIG. 12 is a perspective view showing main parts of a unit case and an upper partial filter according to a third embodiment.

FIG. 13 is a sectional view showing a main part of a unit case and an upper partial filter according to a third embodiment.

FIG. 14 is a perspective view showing a main part of a unit case according to a fourth embodiment.

FIG. 15 is a perspective view showing a partial filter according to a fifth embodiment.

[Explanation of symbols]

 1 Automotive Air Conditioner 2 Ventilation Channel 3 Side Wall 4 Side Wall 6 Bottom Wall 7 Upper Partial Filter 8 Lower Partial Filter 14 Blower Duct 17 Split Type Air Filter 31 Filter Insertion Port 32 Projection (Guide) 42 Projection (( Guide part) 52 Locking groove (locking part) 61 Ridge part (guide part)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisamoto Tanikawa 1-1, Showa-cho, Kariya city, Aichi Prefecture NIDEC CORPORATION

Claims (1)

[Claims] 1. A split-type air for filtering air flowing in the ventilation passage by stacking a plurality of divided partial filters in a ventilation duct forming an ventilation passage through which air flows, in the height direction of the ventilation passage. A filter, the blower duct is provided on the bottom side of the lateral wall, the insertion port for inserting the plurality of partial filters one by one from the width direction of the ventilation passage, the plurality of partial filters the height of the ventilation passage. A guide portion that guides in the vertical direction, and a locking portion that locks a partial filter other than the partial filter that is inserted at the bottom in the ventilation passage at a fixed position in the height direction of the ventilation passage. A characteristic vehicle air conditioner.