JPH0958258A - On-vehicle air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recover deodorizing performance automatically and repeatedly by passing heated air through a deodorizing unit, activating a nasty smell adsorbed in the deodorizing unit so as to desorb it, and discharging it outside a vehicle. SOLUTION: When air in a car room is polluted, an air pollution signal is output from a pollution detecting sensor 8, and a blower 7 is driven by a control part 14. A changeover door 12 is changed to the A position by an actuator 13, so as to close an exhaust port 11 side. Consequently, the air in the car room is passed through a duct 4 from a suction port 2, and after being cleaned by a dust collecting unit 5 and a deodorizing unit 6, the air is let flow backward in the car room through an air discharge port 3. Thereafter, at outputting an air cleaning completion signal, the changeover door 12 is changed to the B position, air heated by a heater 15 is passed through the deodorizing unit 6, hence an adsorbed nasty smell is activated and desorbed, and discharged outside the vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle air cleaning device equipped with a deodorizing filter.

[0002]

2. Description of the Related Art A conventional vehicle air purifying device of this type has a structure as shown in FIG. The structure of this conventional example will be described below. Reference numeral 1 denotes a rear parcel shelf provided on the vehicle body. The rear parcel shelf 1 has an intake port 2 and an exhaust port 3 which are separated in the vehicle width direction. Of the dust collection unit, and the intake port 2 and the discharge port 3 thereof are communicated with each other by a duct 4 projecting on the trunk room side, and in the middle of the duct 4 along the air flow direction. 5, the deodorizing unit 6, and the blower 7 are sequentially arranged.

Reference numeral 8 denotes a dirt detection sensor located inside the vehicle compartment for detecting dirt in the air in the vehicle interior, and reference numeral 9 denotes a control unit for driving and controlling the blower 7 by using a signal from the dirt detection sensor 8 as an input. Reference numeral 10 denotes a vehicle tire.

In the conventional vehicle-mounted air cleaning device having such a structure, when the dirt detection sensor 8 detects that the air inside the vehicle is dirty, the output from the dirt detection sensor 8 is output to the control unit. 9 and the blower 7 is driven as a result. The dirty air in the passenger compartment is sucked into the duct 4 from the intake port 2 by the driving force of the blower 7, passes through the dust collecting unit 5 and the deodorizing unit 6, and the dust and odor in the air are removed and cleaned. The air thus discharged is discharged into the vehicle interior through the air outlet 3 to clean the vehicle interior air. When the vehicle interior air is cleaned, the dirt detection sensor 8 detects that the vehicle interior air is cleaned, and the control unit 9 has a function of stopping the drive of the blower 7 by this detection signal.

[0005]

However, in such a conventional vehicle-mounted air cleaning device, when a physical adsorption filter such as activated carbon is used as the deodorizing unit 6, the temperature rises when the ambient temperature rises. Due to the temperature, the odor adsorbed in the deodorizing unit 6 is activated, and a phenomenon occurs in which the odor is released from the unit 6, and the released odor is sent to the passenger compartment, causing an unpleasant odor in the passenger compartment and causing an occupant's inconvenience. It was sometimes pleasant.

Therefore, according to the present invention, when the air in the vehicle compartment is cleaned, the air heated by the heater is passed through the deodorizing unit while the air outlet is temporarily closed to stop the air supply to the vehicle compartment. To activate the odor adsorbed in the deodorizing unit to separate it from the deodorizing unit, and to discharge the separated odor to the outside of the vehicle to provide an in-vehicle air cleaning device that does not send offensive odors into the vehicle interior. It is intended.

[0007]

In order to achieve the above-mentioned object, according to the present invention, an intake port and an exhaust port are provided in a vehicle compartment, and a duct that connects the intake port and the exhaust port is provided. , A dust collecting unit, a deodorizing unit, and a blower are arranged,
Further, in a vehicle-mounted air cleaning device provided with a dirt detection sensor for detecting dirt on the air and a control unit for driving and controlling the blower by inputting a signal from the dirt detection sensor in the vehicle interior, in the exhaust side of the blower. In, while providing an exhaust port that communicates with the outside of the vehicle, installed a switching door for selectively guiding the exhaust air from the blower to the exhaust port or the exhaust port,
The switching door is provided with an actuator that controls the position of the switching door by a signal from the control unit, and a heater is arranged near the upstream side of the deodorizing unit.
When the cleaning of the vehicle interior air is completed, the air heated by the heater is passed through the deodorizing unit to remove the odor adsorbed by the deodorizing unit from the deodorizing unit, and the released odor is discharged to the outside of the vehicle.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
Although detailed description will be given based on the above, the same portions of the embodiment of the present invention and the configuration described in the conventional example are denoted by the reference numerals used in the conventional example, and detailed description of the same portions is omitted.

That is, in the embodiment shown in FIG. 2, in addition to the intake port 2 and the exhaust port 3 provided in the rear parcel shelf 1, an exhaust port 11 communicating with the outside of the vehicle is provided. The exhaust port 11 is a blower 7 arranged in the duct 4.
It is provided so as to branch from the air outlet 3 on the downstream side.

At the branch point, the discharge air generated by driving the blower 7 is connected to the discharge port 3 or the exhaust port 1 described above.
A switching door 12 for selectively leading to 1 is arranged. The switching door 12 has an actuator 13
The actuator 13 can drive and control the switching door 12 to the A position or the B position in response to a control signal from the control unit 14.

Reference numeral 15 is a heater arranged near the upstream side of the deodorizing unit 6, and the heater 15 is also heated and controlled by the control unit 14.

The above is the configuration of this embodiment, and its operation will be described below.

When the air in the passenger compartment is dirty, an air pollution signal is output from the dirt detection sensor 8 and the control section 14 receives this signal. As a result, the control section 14 outputs a signal for driving the blower 7. Also, a signal to the actuator 13 that moves the switching door 12 to the position A to close the exhaust port 11 side and a signal that opens the circuit of the heater 15 are output.

As a result, the vehicle interior air sucked in the direction of the duct 4 by the driving force of the blower 7 passes through the duct 2 from the intake port 2, is cleaned by the dust collecting unit 5 and the deodorizing unit 6, and then the exhaust port 3 is discharged. After that, it is returned to the passenger compartment. That is, at this time, since the switching door 12 is controlled to the A position, the cleaned air is returned to the vehicle interior without being discharged outside the vehicle, and the air in the vehicle interior is cleaned.

Thus, when the air in the passenger compartment is cleaned,
An air cleaning completion signal is output from the dirt detection sensor 8,
In response to this signal, the control circuit heats the heater 15 and outputs a control signal for closing the outlet side by setting the switching door 12 to the B position. The blower 7 keeps driving.

As a result, the air in the vehicle compartment is sucked into the duct 4 through the intake port 2, and the sucked air passes through the dust collecting unit 5 but is clean air so that the dust collecting unit 5 is not deteriorated. .. The air that has passed through the dust collecting unit 5 is heated (heated) by the heater 15 and then passes through the deodorizing unit 6.

When the heated warm air passes through the deodorizing unit, the deodorizing unit 6 receives the heat energy of the warm air, and the odor adsorbed by the deodorizing unit 6 is activated. Desorbs from the deodorizing unit 6.

The odor thus desorbed from the deodorizing unit 6 is discharged to the outside of the vehicle through the exhaust port 11 by the wind force of the blower 7. Therefore, the deodorizing unit 6 from which the odor is removed can restore its deodorizing performance.

The operation of each mechanism controlled by the output from the dirt detection sensor is summarized in Table 1 as shown in Table 1.

[0020]

[Table 1]

The drive control of the heater 15 and the actuator 13 when exhausting the odor of the deodorization unit 6 to the outside of the vehicle may be continued until the dirt detection sensor 8 detects dirt in the room air again. The drive control may be canceled at a preset time.

Further, the dust collecting unit 5 in the above embodiment may be a filter paper filter, a charging filter having a charging effect, or an electric dust collecting system in which dust is charged by corona discharge to collect dust. A gas sensor may be used as the detection means of the dirt detection sensor 8,
An optical sensor capable of detecting dust may be used.

[0023]

As described above, according to the present invention, when the air in the passenger compartment is cleaned and the cleaning of the air is not required, the heated air is passed through the deodorizing unit,
Since the odor adsorbed by the deodorizing unit is activated, it is desorbed from the deodorizing unit and the deodorized unit is discharged to the outside of the vehicle, so the deodorizing performance of the deodorizing unit is automatically repeated. The deodorizing unit can be recovered, whereby the effective deodorizing action of the deodorizing unit can be maintained for a long time, and the reliability of the deodorizing is enhanced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an in-vehicle air cleaning device according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a conventional vehicle-mounted air cleaning device.

[Explanation of symbols]

 1 ... Rear parcel shelf 2 ... Intake port 3 ... Exhaust port 4 ... Duct 5 ... Dust collection unit 6 ... Deodorizing unit 7 ... Blower 8 ... Dirt detection sensor 11 ... Exhaust port 12 ... Switching door 13 ... Actuator 14 ... Control unit 15 ... heater

Claims (1)

[Claims] 1. An air inlet (2) and an air outlet (3) are provided in a vehicle compartment, and a duct (4) is provided to connect the air inlet (2) and the air outlet (3), and the duct (4). Is equipped with a dust collection unit (5), a deodorizing unit (6), and a blower (7),
Further, a dirt detection sensor (8) for detecting dirt in the air and a control unit (14) for inputting a signal from the dirt detection sensor (8) to drive and control the blower (7) in the vehicle compartment.
The in-vehicle air cleaning device provided with the blower (7)
An exhaust port (11) communicating with the outside of the vehicle is provided on the exhalation side, and a switching door (12) for selectively introducing the exhalation from the blower (7) to the exhalation port or the exhaust port is installed, The switching door (12) is provided with an actuator (13) for controlling the position of the switching door by a signal from the control unit, and a heater (15) is arranged near the upstream side of the deodorizing unit (6). Then, when the cleaning of the air inside the vehicle is completed, the air heated by the heater (15) is passed through the deodorizing unit (6) to separate the odor adsorbed by the deodorizing unit (6) from the deodorizing unit (6), An on-vehicle air purifying device characterized by discharging the removed odor to the outside of the vehicle.