JPH0726215U - air purifier - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the blowing capacity of the air purifier. [Structure] A fan casing 2 is mounted on a base case 1, and a fan motor 8 having a sirocco fan 9 mounted therein is arranged in the fan casing 2.
A cover 19 is attached to the fan casing 2.
The suction port 5 and the discharge port 6 of the fan casing 2 are covered with a dust removing filter 11 and a deodorizing filter 12, respectively. The deodorizing filter 12 is formed by processing activated carbon fiber or the like so as to have a shape in which a plurality of fine passages 12a are laminated. Therefore, the air blown by the drive of the fan motor 8 is the deodorizing filter 1
When passing through 2, the airflow resistance is improved because the airflow resistance is small due to the rectification.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air purifier in which filters are provided at a suction port and a discharge port, respectively.

[0002]

[Prior art]

 An air purifier of this type is disclosed in JP-A-4-222615. In this device, two filters are arranged in a stacked state at the discharge port of the air purifier, and each filter removes dust contained in the air.

Further, Japanese Utility Model Laid-Open No. 59-87314 discloses a structure in which filters are respectively provided at the suction port and the discharge port of an air purifier.

[0004]

[Problems to be solved by the device]

 However, in Japanese Patent Application Laid-Open No. 4-222615, since two filters are laminated, the thickness of the entire filter is increased, and accordingly, the thickness of the air purifier is increased. There is.

Further, according to Japanese Utility Model Laid-Open No. 59-87314, although the thickness can be reduced, the air blown from the discharge port is agitated by the filter, so that the air blowability is greatly reduced. There is a drawback that.

Further, since a filter having a rectangular parallelepiped shape having rigidity is used as the filter, it is necessary to form the front side of the case flat when the filter is closely attached to the case. The degree of freedom is poor. In this case, in order to improve the appearance of the air purifier, when the center of the case is curved so as to project forward, a large gap space is created between the rectangular parallelepiped filter and the curved case. It will exist and waste space will be required, resulting in a larger size.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to improve the air-blowing ability and increase the overall shape in a configuration in which filters are provided at the suction port and the discharge port, respectively. It is to provide an air purifier that can increase the degree of freedom in design without doing so.

[0008]

[Means for Solving the Problems]

 The present invention comprises a case having a suction port and a discharge port, a blower arranged in the case, and a first filter and a second filter arranged in a blower path formed by the blower. In an air purifier provided, the first filter and the second filter are arranged corresponding to the suction port and the discharge port, respectively, and the second filter rectifies air blown from the discharge port in a predetermined direction. It is formed by laminating a plurality of fine passages that pass through each other.

In this case, the first filter may be set to a dust removal filter and the second filter may be set to a deodorizing filter.

Further, a portion of the front surface of the main body case corresponding to the suction port may be formed to be curved, and the first filter may be formed to have flexibility.

[0011]

[Action]

 In the case of the air purifier according to claim 1, when the air is blown from the discharge port, the air is passed through the second filter. At this time, since the second filter has a shape in which a plurality of fine passages are laminated, the air blown from the discharge port is rectified in a predetermined direction when passing through the second filter. As a result, the ventilation resistance can be reduced, and the ventilation capacity can be improved.

In the case of the air purifier according to the second aspect, since the first filter is the dust removing filter, it is possible to remove the dust contained in the air sucked into the suction port. Further, since the second filter is a deodorizing filter, it is possible to remove the odor contained in the air blown from the discharge port.

In the case of the air cleaner according to claim 3, even if the portion corresponding to the suction port is formed in a curved shape on the front surface of the main body case, the first fill provided corresponding to the suction port Since the filter has flexibility, the first filter can be arranged in close contact with the front surface of the main body case.

[0014]

【Example】

 Hereinafter, a first embodiment in which the present invention is applied to a vehicle air cleaner will be described with reference to FIGS. 1 to 9. 1 shows a longitudinal section of the air purifier, and FIG. 2 shows a plane of the air purifier. 1 and 2, the fan casing 2 is fixed to the base case 1 in a mounted state. The fan casing 2 is formed by integrating a lower fan casing 3 and an upper fan casing 4. A suction port 5 and a discharge port 6 are formed on the upper surface of the fan casing 2, and the suction port 5 and the discharge port 6 communicate with each other through a fan chamber 7 formed in the fan casing 2. A fan motor 8 is fixed to the upper surface of the fan chamber 7 of the fan casing 2, and a sirocco fan 9 which is a blower together with the fan motor 8 is attached to the fan motor 8. With the above configuration, an air passage 10 is formed in the fan casing 2 from the suction port 5 through the fan chamber 7 to the discharge port 6.

Here, a plurality of ribs 2a and 2b are erected on the upper surface of the fan casing 2 (see FIG. 3), and the ribs 2a receive the dust removal filter 11 as the first filter to receive the fan casing. In addition to covering the suction port 5 of the fan casing 2, the rib 2b receives the deodorizing filter 12, which is a second filter, to cover the discharge port 6 of the fan casing 2. In this case, the dust removing filter 11 is formed by forming glass fibers or polypropylene fibers into a bellows shape. Further, the deodorizing filter 12 is formed by processing activated carbon fiber or the like so as to have a shape in which a plurality of fine passages 12a are laminated (see FIG. 5).

On the other hand, an electronic component storage portion 13 is formed in a portion of the fan casing 2 adjacent to the discharge port 6 (see FIG. 3). A plurality of holes 14 are formed on the upper surface of the electronic component housing portion 13, and a gas sensor 15 mainly composed of a resistor (see FIG. 8) is arranged below the holes 14. In addition, a slit 16 is formed on the side wall of the electronic component storage portion 13, and a micro switch 17 is arranged corresponding to the slit 16, and an actuator 17a of the micro switch 17 is a slit. It projects laterally through 16 (shown by a chain double-dashed line in FIG. 6).

Further, in the fan casing 2, a control board 18 is arranged in a space surrounding the blower duct 10, and an electronic circuit described later is mounted on the control board 18. In this case, the base case 1 and the fan casing 2 described above constitute a main body case.

A cover 19 is attached to the fan casing 2 as shown in FIGS. The cover 19 is formed with lattice-shaped openings 20 and 21, and these openings 20 and 21 are provided to the suction port 5 and the discharge port 6 of the fan casing 2 through the dust removal filter 11 and the deodorization filter 12, respectively. Face to face.

Here, a rib 19a is formed on a predetermined portion of the inner wall surface of the cover 19 (see FIGS. 6 and 7), and when the cover 19 is attached to the fan casing 2, the rib 19a is formed in the fan casing. It enters the slit 16 of No. 2 and presses the actuator 17a of the micro switch 17.

The air purifier having the above configuration is arranged on the rear package tray of the vehicle.

FIG. 8 schematically shows the entire electrical configuration. In FIG. 8, the battery 22 is connected to a constant voltage circuit 24 via an ignition switch 23. The constant voltage circuit 24 stabilizes the voltage from the battery 22 to, for example, DC 5V and supplies the power to the microcomputer 25.

The control switch 26 and the LED 27 are arranged on an instrument panel (not shown). Here, the control switch 26 is composed of an auto mode switch, a low mode switch and a high mode switch, and outputs the set mode to the microcomputer 25. The LED 27 lights up in response to the output from the microcomputer 25.

The micro switch 17 outputs a high level signal to the microcomputer 25 in an off state and a low level signal in an on state.

The gas sensor 15 is composed of a resistor 15a and a resistor 15b, and a voltage signal indicating the degree of air pollution is sent to the microcomputer 25 by changing the resistance value of the resistor 15a according to the air pollution inside the vehicle. Output.

The first drive circuit 28 and the second drive circuit 29 output a voltage supplied from the battery 22 to the motor 8 in response to an ON command from the microcomputer 25. In this case, the output voltage of the first drive circuit 28 is set lower than the output voltage of the second drive circuit 29.

An EEPROM (Electrical Erasable PROM) 30 stores data given from the microcomputer 25 and outputs the stored data to the microcomputer 25 in response to a command from the microcomputer 25.

The microcomputer 25 selectively turns on the first and second drive circuits 28 and 29 based on the setting state of the control switch 26 and the detection states of the micro switch 17, the gas sensor 15, and the like, and drives each drive. The cumulative ON time of the circuits 28 and 29, that is, the cumulative drive time of the fan motor 8 is stored in the EEPROM 30.

Next, the operation of the above configuration will be described. FIG. 9 shows the operation of the microcomputer 25. In FIG. 9, the microcomputer 25 operates by turning on the ignition switch 23. First, the data stored in the EEPROM 30 is stored in the first timer (step S1). At this time, the EEPROM 30 stores the cumulative operating time of the fan motor 8 until then, as described later.

Subsequently, the microcomputer 25 determines whether or not the micro switch 17 is turned on (step S 2), and when the micro switch 17 is turned on, that is, the cover 19 is attached to the fan casing 2. If so, the detection signal from the gas sensor 15 is input (step S3) and it is determined whether or not the gas concentration exceeds the set value (step S4). In this case, in determining the gas concentration, the signal level of the input detection signal is compared with the average value of the signal levels of the detection signals two minutes before that point. When it is determined that the gas concentration is higher than the set value, the first drive circuit 28 or the second drive circuit 29 is turned on (step S5) and the first drive circuit 28 is turned on according to the set condition by the control switch 26. Start the timer (step S6).

That is, when the auto mode switch of the control switch 26 is on, the first and second drive circuits 28 and 29 are selectively turned on according to the gas concentration. When the low mode switch is on, the first drive circuit 28 is turned on, and when the high mode switch is on, the second drive circuit 29 is turned on.

Then, the microcomputer 25 determines whether or not the first timer has reached the set value (step S7). If the set value has not been reached, the microcomputer 25 returns to step S2 and repeats the above operation.

As a result of the above operation, when the fan motor 8 is driven and the sirocco fan 9 rotates in accordance with the dirt of the air, the air in the vehicle compartment is sucked into the fan casing 2 through the dust filter 11 accordingly. The dust filter 11 removes dust and the like contained in the air during the suction.

Further, since the air sucked into the fan casing 2 is blown into the passenger compartment through the deodorizing filter 12, the deodorizing filter 12 removes the odor contained in the air during the blowing. At this time, since the deodorizing filter 12 is formed by stacking a plurality of fine passages 12a, the air discharged through the deodorizing filter 12 is rectified in the direction of the fine passages 12a of the deodorizing filter 12. Will be blown.

Although not shown in FIG. 9, the microcomputer 25 accumulates the ON times of the first and second drive circuits 28 and 29, and the accumulated time is stored in the EEPROM 30 every 10 seconds, for example. I am writing. As a result, when the energization of the microcomputer 25 is cut off by turning off the ignition 23, the cumulative energization time of the fan motor 8 at that time is stored in the EEPROM 30. Therefore, the microcomputer 25 can continue the accumulation of the energization time of the fan motor 8 by setting the data stored in the EEPROM 30 in the first timer when it is operated by the next energization.

The microcomputer 25 drives the fan motor 8 in accordance with the gas concentration in the vehicle compartment as described above, and the driving time thereof reaches the cleaning or replacement time of the dust filter 11 and the deodorizing filter 12. If so (step S7), the LED 27 arranged on the instrument panel is turned on. Therefore, when the LED 27 lights up, the dust removing filter 11 and the deodorizing filter 12 are cleaned or replaced.

Here, when the cover 19 is removed for cleaning or replacement of the dust filter 11 and the deodorizing filter 12, the rib 19 a of the cover 19 comes out of the slit 16 of the fan casing 2, so that the micro switch 17 is turned off. . As a result, the micro computer 25 starts the second timer (steps S2 and S9). At this time, if the fan motor 8 is in operation, the fan motor 8 is stopped to prevent danger (steps S10 and S11). When the micro switch 17 remains off until the second timer reaches the set value (steps S12 and S13), it is determined that the dust filter 11 and the deodorizing filter 12 have been cleaned or replaced. Then, the data stored in the EEPROM 30 is cleared and the second timer is cleared, and then the LED 27 is turned off (steps S14, S15, S16).

If the micro switch 17 is turned on by the mounting of the cover 19 before the second timer reaches the set value (“YES” in step S12), the filters 11 and 12 have not been cleaned or replaced. After determining and resetting the second timer, the process returns to step S2 (steps S12 and S17).

According to the above configuration, since the deodorizing filter 12 having a shape in which a plurality of fine passages 12a are laminated is arranged at the discharge port 6 of the fan casing 2, an accordion-shaped dust removing filter is arranged at the discharge port. Unlike the conventional example, the ventilation resistance of the deodorization filter 12 can be reduced to improve the ventilation capacity, and the deodorization filter 12 can regulate the ventilation to the passenger compartment.

Further, by disposing the dust filter 11 and the deodorizing filter 12 respectively on the upstream side and the downstream side of the air blowing passage 10 as described above, the dust removing filter 11 can be sucked uniformly throughout the entire deodorizing filter 12. Since it is possible to uniformly blow air over the fan casing 2, extreme positive pressure or negative pressure is not generated in the fan casing 2, and thus air leakage from the fan casing 2 can be prevented.

FIG. 10 shows a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described. That is, the deodorizing filter 12 is arranged so as to be inclined with respect to the cover 19.

According to the second embodiment, as in the first embodiment, the air passing through the deodorizing filter 12 is blown in a direction inclined with respect to the cover 19 while reducing the blowing resistance of the deodorizing filter 12. To be done.

FIGS. 11 and 12 show a third embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described. That is, as shown in FIG. 11, a portion of the front surface of the fan casing 2 corresponding to the suction port 5 is formed in a curved shape with its central portion protruding forward. A dust removing filter 31 is arranged at the suction port 5.

FIG. 12 shows the dust filter 31. In FIG. 12, the dust removing filter 31 is formed by attaching flexible packings 31b to both ends of a filtering portion 31a that is formed into a bellows shape. The filter portion 31a is made of glass fiber or PP fiber. The packing 31b is made of moltoprene or EPDM. With the above configuration, the dust filter 31 has flexibility in the direction in which the packing 31b is curved.

The dust removing filter 31 is arranged on the fan casing 2 so that the filtering portion 31 a has the arrangement relationship as shown in FIG. 11, and is pressed by the cover 19 in the arranged state. As a result, the fan casing 2 is disposed in close contact with the suction port 5 of the fan casing 2 in a curved shape. In this case, a rib 2c is provided upright on the inner surface end of the suction port 5 of the fan casing 2, and the end of the filtering portion 31a of the dust removing filter 31 is fitted to the rib 2c.

According to the third embodiment, since the dust removing filter 31 is formed so as to have flexibility, the dust removing filter 31 is different from the configuration using the rigid rectangular parallelepiped dust removing filter. Can be closely attached to the suction port 5 of the fan casing 2. Therefore, it is possible to suppress the overall height of the air purifier while forming the suction port 5 of the fan casing 2 in a curved shape.

In addition, since the dust filter 31 is disposed in the fan casing 2, one end portion is closed by the packing 31b and the other end portion is closed by the rib 2c of the fan casing 2. A high dust removing effect can be obtained by preventing air leakage from the peripheral portion of 31.

Further, the dust filter 31 can be formed in a rectangular parallelepiped shape at the time of manufacturing, and at the same time, a case of resin or the like for supporting in a curved shape is not required, so that the manufacturing cost can be significantly reduced.

By the way, by disposing the dust removing filter 31 in a curved shape, the space between the end of the dust removing filter 31 and the fan casing 2 is reduced, and it seems that the ventilation resistance is increased. Since the space is located outside the air flow path, the air flow will not be reduced.

In order to maintain the shape of the filtering portion 31a of the dust removing filter 31, an adhesive such as foam rubber may be used instead of the packing 31b. If air leakage from the dust removing filter 31 does not pose a problem, an adhesive or tape may be simply used to maintain the shape.

Further, in each of the above-described embodiments, a heating element composed of a plurality of fine passages may be laminated on the deodorizing filter 12, and the heating element may be used as a heat source for heating. In this case, the heating element does not increase the ventilation resistance.

[0051]

[Effect of device]

 As is clear from the above description, the air purifier of the present invention has the following effects.

According to the first aspect of the present invention, the first and second filters are provided corresponding to the suction port and the discharge port, respectively, and the second filter is provided to blow air from the discharge port. Since a plurality of fine passages for rectifying and passing in the predetermined direction are formed in a laminated shape, it is possible to reduce the blowing resistance and improve the blowing capacity.

According to the second aspect, since the first filter is set to the dust removal filter and the second filter is set to the deodorizing filter, the air blown from the discharge port is included. The odor can be removed.

According to the third aspect, by forming the portion corresponding to the suction port on the front surface of the main body case by bending and forming the first filter so as to have flexibility. Since the first filter can be brought into close contact with the curved main body case, the degree of freedom in design can be increased without increasing the overall shape.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional front view showing a first embodiment of the present invention.

FIG. 2 is an overall plan view

FIG. 3 is a plan view of the case shown with a filter removed.

FIG. 4 is a plan view of the case with the filter attached.

FIG. 5 is a perspective view of a deodorizing filter.

FIG. 6 is a vertical cross-sectional view of essential parts showing a mounted state of a micro switch.

FIG. 7 is a perspective view of essential parts showing a mounted state of a micro switch.

FIG. 8 is a schematic electric circuit diagram.

FIG. 9 is a flowchart showing the operation of the control circuit.

FIG. 10 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 11 is an overall vertical sectional side view showing a third embodiment of the present invention.

FIG. 12 is a perspective view of a dust filter.

[Explanation of symbols]

1 is a base case (main body case), 2 is a fan casing (main body case), 5 is a suction port, 6 is a discharge port, 8 is a fan motor (blower), 9 is a sirocco fan (blower),
Reference numeral 11 is a dust filter (first filter), 12 is a deodorizing filter (second filter), 12a is a fine passage, 19 is a cover, and 31 is a dust filter (first filter).

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B01D 53/81 B60H 3/00 Z

Claims (3)

[Scope of utility model registration request] 1. A main body case having a suction port and a discharge port, a blower arranged in the main body case, and a first filter and a second filter arranged in a blower path formed by the blower. In the air purifier provided with, the first and second filters are respectively provided corresponding to the suction port and the discharge port, and the second filter blows air from the discharge port in a predetermined direction. An air purifier having a shape in which a plurality of fine passages that are rectified and passed through are laminated. 2. The air purifier according to claim 1, wherein the first filter is a dust filter and the second filter is a deodorizing filter. 3. The front surface of the main body case is curvedly formed at a portion corresponding to a suction port, and the first filter is formed to have flexibility. air purifier.