JPH0763647B2 - Automotive air purifier - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an on-vehicle air purifier mounted on a rear tray of an automobile.

2. Description of the Related Art In recent years, the number of vehicle-mounted air purifiers for purifying cigarette smoke and odors inside automobiles has increased, and it has become common to mount them on a rear tray.

Conventionally, there is a vehicle-mounted air purifier mounted on a rear tray of this type, as shown in FIGS. 15 and 16.

As shown in the figure, in the main body that forms a box body with the lower main body 1, the upper main body 2 and the lid body 3, the motor 4 arranged in the vertical axis is attached to the outer edge flange portion 4 ′ over substantially the entire circumference. The buffer member 5 is housed between the protruding ribs 1a and 1b of the lower body 1 and is sandwiched between the ribs 7a of the partition wall 7 fixed to the lower body 1 by screws 6. A suction port 2b is opened in the upper surface 2a of the upper body 2, while a vortex chamber wall 20 is hung downward to form a vortex chamber 8 with the partition wall 7, and a fan 9 fixed to the motor 4 is housed. To do. The lower space 10 of the inclined portion 2d extending on the upper surface 2a
Is provided with electric parts (not shown) and the like. The upper surface
Ribs 2e and 2f are provided upright on the inclined portion 2a and the inclined portion 2d, and a filter 112 is placed via a wire net 111. A large number of intake holes 2g, 1c and exhaust holes 2h, 1d are opened in the upper main body 2 and the lower main body 1, respectively, in communication with the vortex chamber 8 upstream and downstream thereof. A discharger 113 is provided with a discharge electrode 114 and a counter electrode 115, which are fed from a high-voltage power supply (not shown) to cause a corona discharge, and are opposed to each other.

In the above configuration, when the motor 4 is driven, the intake holes 2g, 1
The car interior air sucked from c has relatively coarse dust removed by a pre-filter 116 mounted on the upstream side of the discharger 113, and fine dust is given positive ions when passing through the discharger 113, and is discharged to the rear side. The negative polarity dust collecting filter and the deodorizing filter are electrically adsorbed by the filter 112, and the odor particles are adsorbed by the deodorizing filter. The purified air thus purified passes through the space between the inclined portion 2d and the upper surface portion 2a and the filter 112 and is introduced into the vortex chamber 8 through the suction port 2b as shown by the arrow in the figure, and the exhaust holes 2h, 1
It is returned from d to the car.

In the conventional structure as described above, the filter 112 is arranged above the suction port 2b, so that a space between the filter 112 and the upper surface portion 2a is required, and further, the thickness of the motor 4 and the fan 9 is increased. Since the space in the depth direction is not effectively utilized, the height dimension of the main body becomes unnecessarily high, and when mounted on the rear tray of an automobile, the rear view was narrowed.

In order to solve this problem, the present invention eliminates the useless space of the main body filter, the fan / motor part and the circuit part to make the product thin, and expands the rear view.
(EN) An air purifier that achieves noise reduction without reducing suction air volume and dust collection performance even if it is thin.

Means for Solving the Problems In order to solve the above problems, the present invention forms an intake port and an exhaust port on opposite side surfaces of a box-shaped main body, and a discharge device inside the intake port from the intake port side. The filter and the fan attached to the motor are arranged substantially horizontally to reduce the overall thickness while ensuring the performance, and the following constitution is taken as a concrete means.

That is, the fan attached to the discharge device, the filter and the motor from the intake port is arranged almost horizontally, and the control circuit for controlling the motor is arranged under the filter, and the fan is installed above the vortex chamber surrounding it. Inlet,
A vent is provided below to form a shape for sucking air, and a fin for heat radiation fixed to the control circuit is arranged near the vent at a position where the wind speed increases.

Operation With the above configuration, the space is effectively used, the total thickness of the air purifier body is reduced, the rear view is not obstructed even when placed in the rear tray of an automobile, and the control circuit is stable, so the operation is normal. In addition, it is possible to provide an air purifier having excellent performance such as quietness.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 to FIG. 14, 11 is an air purifier body, which has a built-in motor 13 for driving the fan 12, and the motor 13 is sandwiched between a partition wall 15 and the body 11 via a support rubber 14. .

The fan 12 is horizontally arranged, and the suction port 17 opened in the inner wall 16 of the main body is provided upward.

A discharge device 19 is provided at the intake port 18 provided on the side of the main body 11, and a filter 20 bent in a V shape is provided behind the discharge device 19.

The discharge device 19 comprises two electrodes 21 having needle-like protrusions arranged in parallel, and a box-shaped grounding body 22 made of sheet metal arranged in parallel with the electrodes 2. The electrode 21 is an insulator. 23,2
It is fastened with a screw while being insulated from the earth body by 3 '.

The electrodes 21 are pulled by a spring 24 between the two electrodes and are arranged without slack. A wire net 44 is attached to the upstream side of the earth body.

A control circuit 25 is provided below the filter 20 and controls the motor 13.

A metal shield plate 26 is provided on the control circuit 25.
It is formed to cover the circuit 25 and the shield plate 26.
Is inclined by about 3 ° toward the front of the main body.

Further, the intake port 18 side of the shield plate 26 is in contact with the lower side of the filter 20. However, since the shield plate 26 is inclined, the lower side of the filter comes into contact with the one end 27 of the shield plate 26 and the convex portion 28 provided integrally with the shield plate 26.

The filter 20 is formed by laminating an electrostatic filter 30 and an activated carbon filter 31 incorporating activated carbon, which is a horizontal plate in the natural state, but a thin portion 32 for bending is formed in the center, It can be easily bent into a V shape.

The filter 20 is inserted along a guide frame 33 that integrally projects from the lattice 29 attached to the discharge device 19, and the lower side of the filter 20 is pressed against the shield plate 26 by the guide frame 33.

The air downstream side of the filter 20 is supported by the support ribs 34, and the position of the filter 20 is fixed.

The discharge device 19 is supplied with a high voltage by contacting the contact 35 on the high-voltage side with the projection 37 of the plate 36 which is vertically raised from the electrode 21, and on the ground side, the side surface of the earth body 22 is connected to the contact plate 38. It is grounded by making contact.

39 is a printed circuit board to which the gas sensor 40 is attached, and the control circuit 25 controls the motor by the input of the gas sensor 40.
Controls 13 inputs.

The mounting portion of the gas sensor 40 is blocked from the air passage inside the main body by the protective wall 41, but the smoke of the sensor 40 enters through the ventilation window 42.

The fan 12 has an opening 45 formed in the center of the divider plate 57,
The sucked air is passed through the opening, and the upper blades 46, which are provided above and below,
It can be discharged by the lower blade 47. Of course, there is also air that does not pass through the opening and is discharged by the blade.

A ventilation port 48 is provided between the partition wall 15 and the motor 13,
The air passing through the filter 20 is sucked by the fan not only through the suction port 17 but also under the partition wall 15 through the ventilation port 48.

That is, the air sucked from the upper and lower sides of the suction port 17 and the ventilation port 48 is partly the upper blade due to the balance of the upper and lower suction amounts.
46, part is discharged through the lower blade 47, but since the opening 45 is provided in the center of the fan, suction air from above and below can freely select the passage at the opening 45 part, without pressure loss It will be discharged smoothly.

The vortex chamber 49 surrounding the fan 12 is formed by the partition wall 15, the inner wall 16 and the side wall 50, and the tongue 51 is formed of resin on the inside.
The outer side is formed of rubber 52.

This is because the tong 51 part has a high wind speed, and the air that is sucked in by the fan again and the air that is discharged are divided, but for the air that is re-engaged by the fan, turbulence is reduced and it flows smoothly. Use a smooth resin. A considerable amount of turbulent flow occurs in the exhausted air, and sound is generated by the turbulent flow.
It spreads like a trumpet toward, and echoes on the wall of the tongs 51, is expanded and goes out.

On the other hand, particularly in the tongue portion where turbulent flow occurs, the exhaust port 53 side is made of the rubber 52, so the reverberation is reduced and the exhaust noise is reduced compared to the resin wall.

In the above configuration, the air flow is from the intake port 18 to the main body 12
Once inside, the discharge device 19 causes the fine dust to carry an electric charge, and the fine dust is adsorbed to the electrostatic filter 30 of the filter 20. The odor is absorbed by the activated carbon filter 31.

The clean air that has passed through the filter 20 has a suction port 17 and a ventilation port 48.
Further, it enters the vortex chamber 49 and is discharged to the outside from the exhaust port 53 by the fan 12.

The control circuit 25 controls the operating state of the motor 13 according to the output of the gas sensor 40 which changes depending on the smoke concentration inside the vehicle.

Here, the filter 20 is arranged at substantially the same height as the fan 12 and beside the fan 12, and the intake port 18 and the discharge device 1 are disposed.
The 9, filter 20, motor 13, fan 12, and exhaust port 53 are arranged substantially at the same height.

Therefore, the height of the main body 11 is lower than that of the conventional example, and the rear view is wide.

The control circuit 25 is disposed below the filter 20, and the metal shield plate 26 provided to protect the circuit 25 from static electricity and noise emitted from the discharge device 19 is a filter 20.
Since it is grounded to the filter, the parts for grounding the filter 20 can be omitted and the shield plate 26
The heat dissipation effect can also be obtained by projecting the.

Further, by disposing the discharge fin 54 directly attached to the electric component under the partition wall 15 and arranging it at a position near the ventilation port 48 where the wind speed increases, a further heat dissipation effect can be obtained without increasing the thickness.

As described above, according to the present invention, an excellent heat dissipation effect can be obtained without increasing the thickness of the air purifier body, the control circuit is protected, and the fins are provided on the lower side of the swirl chamber where air flow is small. By providing it, wind noise does not easily come out of the main unit, low noise can be maintained, rear visibility of the rear tray of the car is not obstructed, control is accurate and quietness is also realized. An air purifier can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2, FIG.
The figure is the same perspective view, FIG. 4 is a partially cutaway perspective view of the fan part, FIG. 5 is a perspective view of the filter, FIG. 6 is a sectional view of the filter, and FIG. 7 is an exploded front view of the motor part. FIG. 8 is a perspective view of the discharge device, FIG. 9 is an enlarged view of relevant parts, FIG. 10 is a cross-sectional view of the same embodiment, FIG. 11 is a partial perspective view of the same, and FIG. 12 is a cross-sectional view of a sensor part. 13 is a sectional view of the fan portion, FIG. 14 is a perspective view of the tongue, FIG. 15 is a sectional view of a conventional example, and FIG. 16 is the same perspective view. 11 …… Main body, 12 …… Fan, 13 …… Motor, 15 …… Partition wall, 16 …… Inner wall, 17 …… Suction port, 18 …… Intake port, 19 ……
Discharge device, 20 ... Filter, 25 ... Control circuit, 26 ...
Shield plate (metal body), 33 …… guide frame, 34 …… support rib, 45 …… opening, 46 …… upper blade, 47 …… lower blade, 48 …… vent hole, 51 …… tongue, 52 …… Rubber, 54 ……
Fins, 55 ... Lid, 56 ... Packing, 57 ... Cutting board,
58 …… Inside.

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B60H 3/06 A (56) Reference JP-A-63-36855 (JP, A) JP-A-61-28472 ( JP, A) JP 61-101260 (JP, A) JP 63-221817 (JP, A) JP 64-15160 (JP, A) JP 1-262952 (JP, A) JP 54-162277 (JP, A) Actual opening 55-61424 (JP, U) Actual opening 61-51951 (JP, U) Actual opening Flat 3-38153 (JP, U) Actual opening Sho 58-43512 (JP , U) Actual development Sho 58-171245 (JP, U)

Claims (1)

[Claims] 1. A main body and a lid form a box, and an intake port and an exhaust port are formed on opposite sides of the box, and a fan attached to a discharge device, a filter, and a motor from the intake port side is substantially horizontal inside the box. The control circuit for controlling the motor is arranged under the filter, and the fan has a shape that sucks air from the suction port provided above the vortex chamber surrounding it and the ventilation port provided below. Further, a vehicle air cleaner in which a fin for heat radiation fixed to the control circuit is arranged near the vent hole below the vortex chamber.