JPH07121365B2 - 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 an in-vehicle 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 which 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 portion 2a of the upper body 2, while a vortex chamber wall 2c 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 portion 2a,
An electric member (not shown) and the like are provided. The upper surface 2a,
Ribs 2e and 2f are provided upright on 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 formed in the upper body 2 and the lower body 1, respectively, in communication with the vortex chamber 8 upstream and downstream thereof. Reference numeral 113 is a discharge electrode that is supplied with power from a high-voltage power supply (not shown) to cause corona discharge.
It is a discharger in which 114 and a counter electrode 115 face 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 to the car from d.

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 vertical direction is not effectively utilized, the height 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 fan attached to the filter and the motor are arranged substantially horizontally to reduce the overall thickness while ensuring performance, and the following constitution is adopted as a concrete means.

That is, a suction port is provided above the vortex chamber surrounding the fan, and a ventilation port is provided below the fan chamber, and upper and lower blades are formed above and below a disk-shaped cut-off plate connected to the motor, respectively, and suction is performed by the upper blade. The air is sucked into the vortex chamber from the mouth, and the lower blade is configured to suck the air into the vortex chamber from the vent, and the lower blade is arranged so as to cover the motor arranged so as to project into the vortex chamber. An opening is provided near the center to allow airflow above and below the cut-out plate to enter and leave each other. Further, the upper blade is extended farther in the inner diameter direction and has a higher height than the lower blade.

By effectively sucking air from the top and bottom of the chamber, the main body space is effectively used as an air passage, and the motor and fan are overlapped to reduce the overall thickness, while increasing the air volume and reducing noise, resulting in a thin rear It is possible to provide an on-vehicle air purifier that does not obstruct the visibility and yet has high performance and low noise.

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 is composed of 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 21. 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 provided between the two electrodes and installed 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 surface 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 a lattice 29 attached to the leaving 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 standing 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 passes through the opening and is provided on 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 of which passes through the lower blade and is discharged, but since the opening 45 is provided in the center of the fan, the suction air from the top and bottom can freely select the passage at the opening 45 part, smooth without pressure loss. Will be discharged to.

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 split, but the air that is re-engaged by the fan has less turbulence and 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
Inside, the discharge device 19 causes the thin walls to be charged, and these thin walls are 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 12 according to the output of the gas sensor 40 which changes depending on the smoke concentration in 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.

Here, the fan 12 will be described in detail.

The air sucked by the fan is sucked from the suction port 17 above the fan and the ventilation port 48 below the fan, and at the same time, the fan 12
The upper blade 46, the lower blade 47 is formed on the dividing plate 57, and since the opening 45 is further formed in the center,
The air sucked from the suction port 17 and the ventilation port 48 selects a passage according to the suction amount, and the opening 45, the upper blade 46, the lower blade 47.
Since it passes freely between the two, it is discharged smoothly without pressure loss.

Moreover, since the upper blade 46 is greatly extended in the inner diameter direction and has a higher height than the lower blade 47, it exerts a strong suction ability against suction from the upper direction with a large amount of ventilation, and realizes an increase in air volume and Since the blades 46 and the lower blades 47 have different shapes, the frequency of the generated sound is out of phase, and a single blade can reduce the noise of a fan of the same height.

With this structure, the height of the fan can be made lower than before, and even if the motor 13 is formed so as to project into the fan 12, it is possible to secure the same air volume as that of the conventional one, and it is also possible to realize low noise.

As described above, according to the present invention, even if the space in the thickness direction of the fan and the motor is reduced, the same air volume as the conventional performance can be obtained and further noise reduction can be realized. It is possible to provide an air purifier which has a thin purifier body, widens the rear view, and has high performance and low noise.

[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, 55 ……
Lid, 56 ... Packing, 57 ... Strip plate, 58 ... Inside.

Continuation of front page (56) Reference JP-A-63-36855 (JP, A) JP-A-61-28472 (JP, A) JP-A-61-101260 (JP, A) JP-A-63-221817 (JP , A) JP-A-64-15160 (JP, A) JP-A-54-162277 (JP, A) JP-A-1-262952 (JP, A) Actual development Sho-55-61424 (JP, U) Actual development 61-51951 (JP, U) Actually open 3-38153 (JP, U) Actually open 58-43512 (JP, U) Actually open 58-171245 (JP, U)

Claims (1)

[Claims] 1. A box body is formed by a main body and a lid, and an intake port and an exhaust port are formed on opposite side surfaces of the box body, and a fan attached to a discharge device, a filter, and a motor is formed therein from the intake port side. Arranged horizontally, with a suction port above the vortex chamber surrounding the fan and a ventilation port below, forming an upper blade and a lower blade respectively above and below the disk-shaped sill plate connected to the motor, The upper blade sucks air from the suction port into the vortex chamber, and the lower blade sucks air from the ventilation port into the vortex chamber, and the lower blade is arranged so as to cover the motor arranged to project into the vortex chamber. In addition, an opening is provided near the center of the divider plate that allows airflow above and below the divider plate to enter and leave each other. The higher the formed vehicle air cleaner comprising.