JP2006111182A - Air cleaner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner for a comfortable vehicle by minimizing operating sound to be heard by occupants at an air blowing part of an air cleaning means. <P>SOLUTION: The cleaner is provided with the air blowing part 1 having a motor 1a and a deodorizing filter 2. The cleaner is provided with the air cleaning means 3 for cleaning air by sucking air in a cabin by driving the air blowing part 1 and passing the air through the deodorizing filter 2, an odor detecting means 4 for detecting odor intensity of the air in the cabin, and a control part 5 for controlling an output of the motor 1a of the air blowing part 1 according to the odor intensity detected by the odor detecting means 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a technique for effectively purifying the air in the vehicle according to the odor intensity of the air in the vehicle and the magnitude of the air flow in the vehicle.

Conventionally, as an automotive air conditioner, the odor sensor detects the odor in the vehicle, the filter switching door actuator is controlled according to the signal from the odor sensor, and the deodorizing filter is vented and the deodorizing filter is not vented. It is known that has come to switch. (For example, refer to Patent Document 1.)
However, in the conventional example shown in Patent Document 1, the motor output itself is not controlled by the signal from the odor sensor, and when the odor intensity is weak, it does not pass through the deodorizing filter. The noise due to the rotation of the motor and the noise due to the rotation of the fan driven by the motor are generated regardless of the odor intensity. In addition, in this conventional example, when the odor intensity is low, it does not pass through the deodorization filter, so that it can be deodorized only when the odor intensity is strong and cannot be deodorized when the odor intensity is low.

Moreover, what deodorizes by installing in a vehicle the deodorizing apparatus provided with the ventilation part and the deodorizing filter is also known. In this system, the air in the vehicle is sucked by operating the motor of the blower section at a constant output regardless of the air flow in the vehicle, deodorized by the deodorizing filter, and released into the vehicle. In other words, when the air flow in the vehicle is large, it helps the function of the blower, but the motor output of the blower does not change at this time, so the noise generated by the motor and fan is not reduced. There was a problem.
JP-A-8-324235

  This invention is invented in view of said conventional problem, Comprising: It suppresses the operating sound of the ventilation part of the air purification means which a passenger hears as much as possible, and makes it a subject to provide a comfortable vehicle air purification apparatus. Is.

  In order to solve the above-described problems, a vehicle air purification apparatus according to the present invention includes a blower unit 1 having a motor 1a and a deodorizing filter 2, and sucks air in the vehicle by driving the blower unit 1 to remove the deodorizing filter. 2, an air purifying means 3 for purifying the air by passing it, an odor detecting means 4 for detecting the odor intensity of the air in the vehicle, and a motor of the blower unit 1 according to the odor intensity detected by the odor detecting means 4 And a control unit 5 for controlling the output 1a.

  Thus, by controlling the motor 1a output of the air blowing unit 1 of the air purification means 3 according to the odor intensity of the air in the vehicle, the motor 1a output of the air blowing unit 1 is increased when the odor intensity of the air in the vehicle is strong. Odor can be quickly removed by controlling the output. On the other hand, when the air in the vehicle is clean, the motor 1a output of the blower unit 1 is controlled to be low or stopped and the operation generated by the blower unit 1 It is possible to provide a comfortable vehicle air purification device 8 without reducing or eliminating the sound and causing the passengers to hear no harsh sound.

  Moreover, it is preferable that the said control part 5 controls the motor 1a output of the said ventilation part 1 to the maximum output, only when the odor intensity | strength detected by the said odor detection means 4 exceeds a predetermined threshold value.

  By adopting such a configuration, only when the odor intensity exceeds a predetermined threshold value, the motor 1a output of the blower unit 1 is controlled to be the maximum output temporarily in a short time, and the odor can be removed quickly and effectively. This makes it possible to provide a comfortable vehicle air purification device 8 without letting the passenger hear the continuous operating sound of the blower unit 1.

  Moreover, it is preferable that the said control part 5 controls the motor 1a output of the said ventilation part 1 in steps according to the class of the odor intensity detected by the said odor detection means 4. FIG.

  By adopting such a configuration, the motor 1a output of the blower unit 1 is changed stepwise according to the odor intensity of the air in the vehicle, so that passengers can comfortably hear the operating sound of the blower unit 1 more than necessary. A vehicular air purification device 8 can be provided.

  An air purifier 3 having a motor 1 a and a deodorizing filter 2, an air purifying unit 3 for purifying the air by sucking the air inside the vehicle by driving the air blowing unit 1 and passing the deodorizing filter 2; A flow detection means 6 for detecting the magnitude of the air flow; and a control section 5 for controlling the motor 1a output of the blower section 1 in accordance with the magnitude of the air flow detected by the flow detection means 6. It may be characterized by comprising.

  By adopting such a configuration, if the air does not circulate so much in the vehicle, the motor 1a output of the blower unit 1 is controlled to a high output, the air in the vehicle is quickly sucked in, and deodorized by the deodorizing filter 2 to enter the vehicle. On the other hand, if the air is sufficiently circulated in the vehicle, it will help the operation of the air blower 1. Therefore, the motor 1a output of the air blower 1 is controlled to a low output to remove the deodorization. Thus, it is possible to provide the vehicle air purifying device 8 that can comfortably purify the air in accordance with the in-vehicle environment without causing the passenger to hear the operation sound generated by the blower unit 1.

  Further, it is preferable that the air purification means 3 and the flow detection means 6 are provided separately, the flow detection means 6 is installed on the ceiling surface in the vehicle, and the air purification means 3 is installed in the rear part of the vehicle. .

  In this way, by installing the flow detection means on the ceiling surface where the air flow in the vehicle appears remarkably, the flow detection according to the actual environment can be detected, and the air purification means 3 for generating the driving sound of the motor 1a is provided. It can be installed at the rear of the vehicle to prevent noise from being generated by the passengers.

  The flow detection means 6 preferably detects the output of the air adjustment means 7 for adjusting the temperature of the air inside the vehicle to estimate the magnitude of the air flow in the vehicle.

  Thus, by associating the detection of the air flow in the vehicle by the flow detection means 6 with the output of the air conditioner that is the air adjustment means 7 provided in the vehicle, the magnitude of the air flow in the vehicle can be easily estimated, It is possible to easily detect the flow in the actual environment.

  Moreover, it is preferable that the said control part 5 is controlled so that the motor 1a output of the said ventilation part 1 becomes low as the magnitude | size of the air flow detected by the said flow detection means 6 becomes large.

  With such a configuration, if the air is sufficiently circulated in the vehicle, the air purification device 8 for the vehicle that can operate the air blowing unit 1 of the air purification means 3 at a low output and is suitable for the vehicle interior environment is provided. Can be provided.

  The present invention provides a comfortable vehicle air purification device that can effectively deodorize the odor inside the vehicle, suppresses the operating sound of the air blowing part of the air purification means as much as possible when the odor inside the vehicle is weak and the air inside the vehicle is clean. be able to.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the vehicle air purification device 8 of the present invention includes an air purification means 3 including a blower unit 1 and a deodorizing filter 2 provided in a housing 9, and the housing 9 includes an odor sensor. 4 and FIG. 5 to be described later for controlling the operation of the air blowing section 1 of the air purifying means 3 according to the odor intensity detected by the odor detecting means 4 in the housing 9. A control unit 5 as shown is built in.

  The housing 9 is provided with an air suction portion 10 and an air discharge portion 11, and an air flow path in which the one end portion communicates with the air suction portion 10 and the other end portion communicates with the air discharge portion 11 in the housing 9. The blower 1 and the deodorizing filter 2 that are formed and constitute the air purifying means 3 are arranged in the middle of the air flow path (in the embodiment of FIG. 2, the blower is provided downstream of the deodorizing filter 2). 1 is arranged). A power harness 12 is connected to the vehicle air purification device 8.

  The blower unit 1 includes a blower fan (not shown) and a motor 1a for driving the fan. In FIG. 2, the blower unit includes a fan and a motor 1a incorporated in one casing. An example of configuring 1 is shown.

  The vehicle air purification device 8 having the above-described configuration is installed at an arbitrary position in the vehicle (automobile), for example, the instrument panel 19 in the vehicle as shown in FIG. 3, and the power harness 12 is attached to the vehicle. It is connected to the provided cigar socket to get power.

  Then, the fan 1 is rotated by operating the motor 1 a of the blower unit 1, and the fan rotates to suck the air in the vehicle from the air suction unit 10 and pass through the deodorant filter 2, and the deodorant filter 2 smells. The purified air from which the odor is removed is discharged from the air discharge portion 11 into the vehicle.

  Such a vehicle air purification device 8 must inevitably use a device having a certain capacity or more as the blower unit 1 in order to perform deodorization in the vehicle faster. For this reason, when the ventilation part 1 which has this capability more than fixed is used, the operation sound of the ventilation part 1 will become large and an irritating sound will generate | occur | produce for the passengers including a vehicle driver. Therefore, in order to suppress this harsh sound as much as possible, in the present invention, the odor intensity of the air in the vehicle is detected by the odor detection means 4, and the air purification means 3 according to the odor intensity detected by the odor detection means 4. The output of the motor 1a of the air blower 1 is controlled by the controller 5, and when the odor intensity of the air in the vehicle is strong (the odor component is strong), the motor 1a output of the air blower 1 becomes high output. (That is, the motor 1a is operated with the rotational speed increased), and the operation of the motor 1a of the air blower 1 is stopped when the odor intensity of the air in the vehicle is weak (the odor component is thin). The operation sound generated by the motor 1 (the sound generated by the motor 1a and the sound generated by the fan rotated by the motor 1a) is eliminated so that the passenger does not hear an irritating sound.

  FIG. 4 is a block diagram showing an example of the circuit configuration.

  In FIG. 4, the odor intensity in the vehicle is detected by the odor detection means 4, the signal is amplified by the amplifier 13, the output is read by the level detection circuit 14, and the odor intensity exceeds a predetermined threshold value. Only when the voltage control circuit 16 and the motor drive circuit 17 give a predetermined voltage to the motor 1a made of a DC motor to control the motor 1a to rotate at its rated speed and perform a deodorizing operation with a full capacity. When the odor intensity read by the detection circuit 14 is equal to or less than a predetermined threshold value, the motor 1a is not operated and the air in the vehicle is not purified. Thus, only when the odor intensity exceeds a predetermined threshold, the odor removal is performed quickly and effectively by controlling the output of the motor 1a of the blower unit 1 to be the maximum output temporarily in a short time. Since the operation of the motor 1a is stopped when the odor intensity is less than or equal to a predetermined threshold, it is possible to prevent the passenger from hearing the continuous operation sound due to the maximum output of the motor 1a of the blower unit 1.

  In the said embodiment, only when the odor intensity | strength detected by the odor detection means 4 exceeds the predetermined threshold value, the control part 5 controls the motor 1a output of the ventilation part 1 to the maximum output, and odor intensity | strength is below a predetermined threshold value. In this case, the motor 1a is controlled so as not to operate. However, the motor 1a output of the blower unit 1 is controlled to the maximum output only when the predetermined threshold is exceeded, and the odor intensity is predetermined. Control may be made so that the output of the motor 1a is lowered when the value is below the threshold.

  FIG. 5 shows a block diagram of the circuit configuration of this embodiment.

  In FIG. 5, the odor intensity in the vehicle is detected by the odor detection means 4, the signal is amplified by the amplifier 13, the output is read by the level detection circuit 14, and switched if the odor intensity is below a predetermined threshold. A low voltage is applied to the motor 1a made of a DC motor by the first voltage control circuit 16a and the first motor drive circuit 17a via the circuit 15 to reduce the number of rotations, thereby suppressing noise generated from the motor 1a (in this case) And noise generated by the rotation of the fan). When the odor intensity detected by the odor detecting means 4 exceeds a predetermined threshold value, the motor 1a made of a DC motor supplies a predetermined voltage to the second voltage control circuit 16b and the second motor drive circuit 17b via the switching circuit 15. And the motor 1a is controlled to perform a deodorizing operation with a full capacity by rotating the motor 1a to a rated speed. As described above, only when the odor intensity exceeds a predetermined threshold value, the odor removal can be performed quickly and effectively by controlling the output of the motor 1a of the blower unit 1 to be the maximum output in a short time. Thus, when the odor intensity is below a predetermined threshold value, the rotation speed of the motor 1a is decreased to lower the operation sound of the motor 1a, and the continuous operation sound due to the maximum output of the motor 1a of the blower unit 1 is obtained by the passenger. So that you can't tell me. Reference numeral 18 denotes a backflow prevention unit that prevents current from flowing from the first motor drive circuit 17a to the motor 1a so that it does not flow back to the second motor drive circuit 17b, and current flows from the second motor drive circuit 17b to the motor 1a. In this case, the backflow does not flow back to the first motor drive circuit 17a.

  Next, another embodiment of the present invention will be described.

  In each of the above embodiments, the level detection circuit 14 detects whether or not the odor intensity exceeds a predetermined one-stage threshold value, and controls the motor 1a according to whether or not it exceeds the one-stage threshold value. However, in the present embodiment, the class of the odor intensity detected by the odor detecting means 4 is read by the level detection circuit 14 and the output of the motor 1a of the blower unit 1 is controlled stepwise according to the class of the odor intensity. Yes.

  That is, in the present embodiment, in the block diagram of the circuit configuration shown in FIG. 4, the odor detecting means 4 detects the odor intensity in the vehicle, the signal is amplified by the amplifier 13, and the output is level detected. According to the level intensity class (class of odor intensity) read by the circuit 14 and read by the level detection circuit 14, a drive voltage is applied to the motor 1a by the voltage control circuit 16 and the motor drive circuit 17 to rotate the motor 1a. The deodorizing ability is controlled according to the class of odor intensity. In this way, by controlling the motor 1a output of the air blowing unit 1 of the air purifying means 3 in a stepwise manner according to the odor intensity of the air in the vehicle, the operating sound of the air blowing unit 1 is heard more than necessary for the passenger. Can be avoided.

  Next, another embodiment of the vehicle air purification device 8 will be described with reference to FIGS.

  The vehicle air purification device 8 of the above-described embodiment detects the odor intensity of the air in the vehicle by the odor detection means 4, and controls the output of the motor 1a of the air blowing unit 1 of the air purification means 3 according to the detected odor intensity. In this embodiment, the flow detection means 6 for detecting the magnitude of the air flow in the vehicle is provided, and the air is detected according to the magnitude of the air flow detected by the flow detection means 6. The motor 1a output of the air blowing unit 1 of the purification means 3 is controlled by the control unit 5.

  That is, the vehicle air purification device 8 of the present embodiment includes an air purification means 3 including a blower unit 1 having a motor 1a and a deodorizing filter 2, a control unit 5 for controlling the blower unit 1, and these airs. The housing 9 is provided with the purifying means 3 and the control unit 5 and the flow detecting means 6 for detecting the magnitude of the air flow in the vehicle provided in the housing 9. Examples of the flow detection means 6 include a wind pressure sensor and an air volume sensor. The flow detection means 6 is the same as that of the above-described embodiment except that the housing 9 is provided. The same components as those of the above-described embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted because they are duplicated.

  The vehicle is provided with an air adjusting means 7 for adjusting the temperature of the air inside the vehicle, such as an air conditioner. When the air adjusting means 7 is operated and there is a strong wind flow in the vehicle, the air containing the odor inside the vehicle. The circulation efficiency of the is improved. That is, since it helps the operation of the air blowing unit 1 such as a fan motor built in the vehicle air purification device 8, the air blowing unit 1 efficiently eliminates the odor contained in the air in the vehicle even if it does not fully rotate. The odor filter 2 can be used to adsorb and remove odors in the air. Therefore, when the flow of air in the vehicle is large (for example, when the wind pressure is large), this is detected by the flow detection means 6, and the control unit 5 controls the motor 1a output of the blower unit 1 to be small. Generation of noise can be suppressed. On the other hand, if the air flow in the vehicle is small, the circulation efficiency of the odorous air in the vehicle is lowered. Therefore, if the flow detection means 6 detects that the air flow in the vehicle is small, the fan built in the vehicle air purification device 8 By controlling the motor 1a output of the blower 1 such as a motor to increase, circulation of odorous air in the vehicle is promoted, and the odor in the air is adsorbed and removed through the deodorizing filter 2.

  FIG. 8 shows a block diagram of the circuit configuration of the present embodiment.

  In FIG. 8, the flow detection means 6 detects the magnitude of the air flow in the vehicle, the detection signal is amplified by the amplifier 13, the output is read by the level detection circuit 14, and the level detection circuit 14 reads the output. In accordance with the wind pressure level, the voltage control circuit 16 and the motor drive circuit 17 change the drive voltage applied to the motor 1a steplessly to change the rotation speed of the motor 1a. As a result, if the air is not circulated in the vehicle, the motor 1a output of the air blowing unit 1 of the air purifying unit 3 is controlled to be high. If the air is sufficiently circulated in the vehicle, the air purifying unit 3 is controlled. The motor 1a output of the air blower 1 is controlled so as to be low, so that the operating sound generated by the air blower 1 is reduced and not heard by the passenger, and comfortable air purification suitable for the in-vehicle environment can be achieved.

  By the way, in the said embodiment, as shown in FIG.6, FIG.7, the flow detection means 6 which detects the magnitude | size of the flow of the air in a vehicle is provided in the housing 9 of the air purification apparatus 8 for vehicles, Although the example in which the magnitude of the air flow in the vicinity of the installation position of the air purification device 8 is detected has been shown, as the flow detection means 6, as shown in FIG. The output of the means 7 (wind pressure, air volume, etc.) may be detected to estimate the magnitude of the air flow in the vehicle. In this case, by associating the detection of the air flow in the vehicle by the flow detection means 6 with the output of the air conditioner that is the air adjustment means 7 provided in the vehicle, the magnitude of the air flow in the vehicle can be easily estimated, It is possible to easily detect the flow that matches the actual environment inside the vehicle.

It is a perspective view of one embodiment of the air purification device for vehicles of the present invention. It is a partially broken perspective view same as the above. It is a perspective view which shows the example installed in the room | chamber interior of the vehicle (automobile) same as the above. It is a block diagram which shows a circuit structure same as the above. It is a block diagram which shows the other circuit structure same as the above. It is a perspective view of other embodiments of the air purification device for vehicles of the present invention. It is a partially broken perspective view same as the above. It is a block diagram which shows a circuit structure same as the above. It is a block diagram which shows the circuit structure of other embodiment same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air blower 2 Deodorant filter 3 Air purification means 4 Odor detection means 5 Control part 6 Flow detection means 7 Air adjustment means

Claims (7)

  An air purifying unit having a motor-equipped air blowing unit and a deodorizing filter, and sucking the air inside the vehicle by driving the air blowing unit and passing the deodorizing filter, and detecting the odor intensity of the air inside the vehicle The vehicle air purification apparatus comprising: an odor detecting unit that controls the motor output of the air blowing unit according to the odor intensity detected by the odor detecting unit.   2. The vehicle air according to claim 1, wherein the control unit controls the motor output of the air blowing unit to a maximum output only when an odor intensity detected by the odor detection unit exceeds a predetermined threshold value. Purification equipment.   2. The vehicle air purification device according to claim 1, wherein the control unit controls the motor output of the blowing unit in a stepwise manner in accordance with a class of odor intensity detected by the odor detection unit.   An air purification means comprising a blower having a motor and a deodorizing filter, and purifying the air by sucking the air in the vehicle by driving the blower and passing through the deodorizing filter, and the magnitude of the air flow in the vehicle A vehicle air purifier comprising: a flow detecting means for detecting the air flow; and a control section for controlling the motor output of the air blowing section in accordance with the magnitude of the air flow detected by the flow detecting means. .   The air purification means and the flow detection means are provided separately from each other, the flow detection means is installed on the ceiling surface in the vehicle, and the air purification means is installed in the rear part of the vehicle. 4. The vehicle air purification device according to 4.   6. The vehicle air according to claim 4, wherein the flow detection means estimates the magnitude of the air flow in the vehicle by detecting an output of the air adjustment means for adjusting the temperature of the air in the vehicle. Purification equipment.   The said control part controls so that the motor output of the said ventilation part becomes low as the magnitude | size of the air flow detected by the said flow detection means becomes large, Any one of Claim 4 thru | or 6 characterized by the above-mentioned. The vehicle air purification apparatus according to claim 1.

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