JP2001287542A - Air purifier for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air purifier for a vehicle by installing an air purifier capable of discharging air to the outside of a vehicle compartment at a ceiling part of the vehicle to purify the air in the vehicle compartment, and to effectively lower the temperature near the ceiling part when the temperature in the vehicle compartment is high. SOLUTION: This air purifier is provided with an air purifier unit 1 mounted at a ceiling part of the vehicle and having a suction port 3, an interior blow-off port 4a and an exterior blow-off port 4b, an exhaust duct 5 having one end connected to the exterior blow-off port 4b and the other end communicated with the outside of the vehicle compartment, a blower 8 for blowing off the air sucked from the suction port 3 to the interior blow-off port 4a or the exterior blow-off port 4b, a filter 7 for filtering the air sucked from the suction port 3, and a switching door 10 for switching the blow-off port for the air sucked from the suction port 3 to the interior blow-off port 4a or the exterior blow-off port 4b. The switching door 10 is controlled to be switched by a temperature sensor 9 for detecting the temperature in the air purifier unit 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air purifier for purifying air in a passenger compartment, and more particularly, to an air purifier installed on a ceiling to suck air from the passenger compartment and blow it out of the passenger compartment or outside the passenger compartment. Regarding the structure.

[0002]

2. Description of the Related Art Conventionally, as this type of vehicle air purifier, there is one disclosed in Japanese Patent Application Laid-Open No. 5-112121. According to this publication, an air purifier is attached to a rear tray behind a vehicle. This air purifier includes a suction port for sucking air in a vehicle interior, an indoor air outlet, an outdoor air outlet for blowing out into a trunk room, a switching means for both air outlets, a filter and a blower, and a vehicle air purifier. Container
When the temperature inside the vehicle compartment is high when the key switch of the vehicle is turned on, a blower is operated to inhale the air inside the vehicle compartment and blow it out of the vehicle compartment (trunk room). Thereby, the odor component adsorbed on the activated carbon contained in the filter is released and discharged, and the temperature in the vehicle compartment is lowered.

[0003]

However, the above device is difficult to apply to a one-box vehicle without a rear tray. In addition, under hot weather in summer, the ceiling becomes hot, and even if forced ventilation is performed with an air purifier provided on the rear tray, ventilation near the ceiling becomes insufficient, and the temperature inside the vehicle interior can be reduced efficiently. was difficult.

In view of the above, an object of the present invention is to provide
An air purifier capable of exhausting outside the vehicle compartment is installed on the ceiling of the vehicle to purify the air in the vehicle interior, and when the interior of the vehicle is hot, the temperature near the ceiling can be effectively reduced. To provide equipment.

[0005]

In order to achieve the above object, the technical means according to claims 1 to 5 are adopted.

That is, according to the first and second aspects of the present invention, a suction port (3) installed on the ceiling portion of the vehicle for sucking air in the vehicle compartment, and the air sucked from the suction port (3) is introduced into the vehicle compartment. An indoor outlet (4a) for blowing out air and the suction port (3)
The outdoor air outlet (4
b), and one end of the duct (4)
an exhaust duct (5) connected to b) and having the other end communicated with the outside of the cabin; and an exhaust duct (4a) disposed in the duct (1) and sucking air in the cabin from an intake port (3). A blower (8) for blowing air from an outdoor outlet (4b), a filter (7) disposed in the duct (1) for filtering air sucked from the suction port (3), and a filter (7) disposed in the duct (1) And air outlet switching means (9, 10, 11) for switching the air outlet of the air sucked from the inlet (3) to either the indoor outlet (4a) or the outdoor outlet (4b). The switching means (10) for switching to either the indoor air outlet (4a) or the outdoor air outlet (4b) is controlled in accordance with the detection output of the thermal load detecting means (9) for detecting the temperature condition. And

According to the first and second aspects of the present invention, the switching means (1) for switching between the indoor air outlet (4a) and the outdoor air outlet (4b) is provided in the duct (1) installed on the ceiling.
0) is provided, and air in the vehicle interior is blown out of the vehicle interior from the indoor air outlet (4a) or the outdoor air outlet (4b) via the exhaust duct (5) in accordance with the detection output of the thermal load detecting means (9). By performing the switching control, the operation of the air purifier of the present invention can be performed in accordance with the detection output of the heat load detecting means (9), and can be performed by blowing into the vehicle interior and driving outside the vehicle interior (forced ventilation). For example, when the air purifier is operated when the vehicle interior temperature is high, for example, when the vehicle is parked in the sunshine for a long time, the high-temperature air near the ceiling can be forcedly ventilated out of the vehicle interior.

As a result, the operation is performed by forced ventilation until the temperature is reduced to a predetermined temperature, for example, until the detection output of the heat load detecting means (9) is reached, and the blowing of hot air from the indoor outlet (4a) can be prevented. Conventionally, the inconvenience of discomfort to the occupant due to the hot air being blown out from the indoor air outlet (4a) can be eliminated, and the high temperature air near the ceiling can be discharged to the outside of the vehicle, thereby improving comfort for the occupant. I can do it.

[0009] Further, in the case of a car such as a one-box vehicle having a generally large ceiling surface, when the solar radiation is strong, the ceiling is at a high temperature. By lowering, the discomfort to the occupant due to the radiation can be eliminated. Further, smoke and odor of cigarettes can be efficiently exhausted outside the vehicle compartment.

[0010] Further, by installing an air purifier on the ceiling of the vehicle, the tobacco smoke flows to the ceiling from the flow of air in the vehicle interior, so that the interior of the vehicle is filled more than the conventional installation on the rear tray behind the vehicle. The cleaning effect is large because it is inhaled before the cleaning.

In addition, by operating the air conditioner (6) and operating the air purifier after parking under the scorching sun, the high-temperature air near the ceiling is rapidly reduced, and the heat in the cooling operation is reduced. The air in the vicinity of the ceiling part with a large load is discharged, and the cool-down characteristic of the cooling operation in the air conditioner (6) is improved, so that discomfort is quickly eliminated and the output of the cooling capacity can be reduced. Therefore, the power consumption of the vehicle is reduced, and the fuel consumption can be reduced.

According to the third aspect of the present invention, the blowout switching means (9,
10, 11) has switching means (10) for switching to either the indoor air outlet (4a) or the outdoor air outlet (4b), and is characterized by manually operating the switching means (10).

According to the third aspect of the present invention, switching between the operation of blowing into the vehicle interior and the operation of blowing out of the vehicle interior (forced ventilation) is performed by the occupant manually without using the temperature detecting means (9). Can be operated, the temperature detecting means (9) becomes unnecessary, and the switching means (10) can be configured with a simple structure, so that the cost of parts can be reduced.

According to a fourth aspect of the present invention, the thermal load detecting means (9) is provided in the duct (1) and has a temperature sensor (9) for detecting the temperature in the duct (1). The means (10, 11) receives the detection output of the temperature sensor (9), and blows out the air drawn into the duct (1) to the outside of the vehicle compartment when the temperature in the duct (1) is equal to or higher than a predetermined temperature. It is characterized by controlling the blower (8) and the switching means (10).

According to the fourth aspect of the present invention, when the temperature sensor (9) for detecting the temperature in the duct (1) is higher than a predetermined temperature, the air is blown out of the vehicle compartment. There is no blow-out from the indoor outlet (4a) until the temperature in the duct (1) in the ceiling, which becomes high, decreases to a predetermined temperature. As a result, hot air that is higher than the temperature in the vehicle compartment is blown out, and the inconvenience that has caused the occupant to be uncomfortable can be eliminated.

According to the fifth aspect of the present invention, the thermal load detecting means (9) is mounted on a vehicle provided with the air conditioner (6), and the heat load detecting means (9) is one of the inside air temperature, the outside air temperature, and the amount of solar radiation used by the air conditioner (6). , And detects the temperature state in the vehicle interior based on the signal.

According to the fifth aspect of the present invention, the temperature sensor (9) provided in the duct (1) is not used, and any one of the inside air temperature, the outside air temperature, and the amount of solar radiation used by the air conditioner (6) is used. Is input to the electric control device of the air purifier, the temperature inside the duct (1) is calculated, and when the temperature is equal to or higher than a predetermined value, the air is blown out of the vehicle compartment to utilize the existing thermal load detecting means (9). It is possible to reduce the cost of parts.

Note that the reference numerals in parentheses of the above means indicate the correspondence with specific means of the embodiment described later.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vehicle air purifier of the present invention applied to a one-box vehicle will be described with reference to FIGS. First, as shown in FIG.
The air purifier unit 1 is mounted on a ceiling 2 of a vehicle.
The case 1a of the air purifier unit 1 has a suction port 3 for taking in the air in the vehicle interior, an indoor outlet 4a for blowing out the sucked air into the vehicle interior, and an outdoor outlet 4b for discharging the air outside the vehicle interior.
Are formed. On the downstream side of the outdoor outlet 4b,
An exhaust duct 5 having one end connected to the outdoor air outlet 4b and the other end connected to an exhaust port 5a communicating with the outside of the vehicle.
Is installed between the ceiling portion 2 of the vehicle and the interior material 2a. In addition, 6 is a well-known vehicle air conditioner.

Next, as shown in FIG. 2, in the air purifier unit 1, downstream of the suction port 3, the air sucked from the suction port 3 and blown out to the vehicle interior or exterior is filtered. In addition, a filter 7 is provided to eliminate dust and dirt contained in the air and smoke of cigarettes. A blower 8 is provided downstream of the filter 7. The blower 8 includes a centrifugal fan 8b and a drive motor 8c disposed in a blower case 8a, and the drive motor 8c rotates at a rotation speed according to the applied voltage.

A temperature sensor 9 and a switching door 10 are provided downstream of the blower 8. This switching door 10
Is integrally connected to a rotating shaft 10a disposed in the horizontal direction. The rotating shaft 10a is rotatably supported by the case 1a, and one end of the rotating shaft 10a is connected to the actuator 12 via a link member. (Not shown) to adjust the rotational position. Also, this switching door 1
Reference numeral 0 denotes a control door that controls switching of the direction in which the air filtered by the filter 7 is blown out to either the indoor outlet 4a or the outdoor outlet 4b.

The temperature sensor 9 detects the temperature inside the air purifier unit 1. When the temperature inside the air purifier unit 1 is equal to or higher than a predetermined temperature, the above-described switching door 10 is turned on. As shown in the figure, the indoor air outlet 4a is closed (position 10b in the figure), the outdoor air outlet 4b is opened, the air in the vehicle interior is filtered by the filter 7, and then the air is discharged to the outside of the vehicle through the exhaust duct 5. It is.

Next, the power supply to the blower 8 and the switching door 10 is controlled by an electric control device 11 (hereinafter referred to as an ECU) shown in FIG. The ECU 11 includes an air purifying unit 13 that performs predetermined arithmetic processing according to a preset program and operates the blower 8 and the actuator 12 of the switching door 10 to purify the air in the vehicle compartment.

The air purifying means 13 includes a temperature sensor 9 and an operation switch 1 in an air purifier operation panel (not shown).
An input signal is applied from the switch 4 and the blower switch 15. The operation switch 14 is connected to the blower 8 and the ECU 1
The blower switch 15 is a switch for selecting one of a low speed, a medium speed, and a high speed airflow mode for the rotation speed of the blower 8.

The operation of this embodiment having the above configuration will be described. For example, after the vehicle has been parked under the sunshine for a long time, the vehicle is started, the air conditioner 6 for the vehicle is operated, and the operation switch 14 in the air purifier operation panel (not shown) is operated. 1 is higher than the predetermined temperature, the switching door 10
Is the indoor outlet 4a by the rotation of the actuator 12.
, And is operated in an exhaust mode (forced ventilation mode) in which the blower 8 is operated. Therefore, high-temperature air near the ceiling is sucked into the air purifier unit 1 from the suction port 3, passes through the filter 7, passes through the outdoor air outlet 4 b via the exhaust duct 5, and exits from the exhaust port 5 a to the outside of the vehicle. Is discharged. Here, even if the temperature of the air inside the cabin decreases due to the operation of the air conditioner 6 for the vehicle, if the temperature inside the air purifier unit 1 is higher than a predetermined temperature, an exhaust mode (forcibly discharging the air outside the cabin) is used. (Ventilation mode).

As described above, even when the vehicle air conditioner 6 is operated, in an environmental condition where the solar radiation is strong and the heat load is large,
The air purifier unit 1 is configured to operate in the exhaust mode (forced ventilation mode) until the temperature in the air purifier unit becomes equal to or lower than the predetermined temperature. Thus, the configuration is made such that the temperature of the air blown out from the indoor air outlet 4a is not blown out in an uncomfortable temperature zone, and the high-temperature air near the ceiling is discharged to the outside of the vehicle to lower the surface temperature of the ceiling, thereby reducing the ceiling temperature. This eliminates discomfort caused by radiation from the unit 2.

When the temperature in the air purifier unit 1 becomes lower than the predetermined temperature, the switching door 10 closes the outdoor outlet 4b by the rotation of the actuator 12, and blows the air filtered by the filter 7 into the room. It is operated in the indoor blowing mode that blows out from the outlet 4a.

According to the embodiment having the above-described configuration, when the vehicle air conditioner 6 and the air purifier unit 1 are operated when the vehicle is parked in the scorching sun for a long period of time while riding, the ceiling is High temperature air in the vicinity can be forcibly ventilated to the outside of the vehicle. As a result, the air in the vicinity of the ceiling with a high temperature is rapidly reduced, and the air in the vicinity of the ceiling with a large heat load in the cooling operation is discharged, so that the cooling-down characteristic of the vehicle air conditioner 6 in the cooling operation is good. As a result, the discomfort is quickly eliminated and the output of the cooling capacity can be reduced. Therefore, the power consumption of the vehicle is reduced, and the fuel consumption can be reduced.

In the case of an automobile such as a one-box vehicle having a generally large ceiling surface, when the solar radiation is strong,
Since the temperature of the vehicle is high, the air in this portion is exhausted to lower the surface temperature of the ceiling surface, thereby eliminating the discomfort to the occupant due to the radiation. Further, smoke and odor of cigarettes can be efficiently exhausted outside the vehicle compartment.

Further, the air purifier unit 1 is operated in an exhaust mode (forced ventilation) until the temperature in the air purifier unit drops to a predetermined temperature, and since there is no air blowout from the indoor air outlet 4a, conventionally, hot air is blown out to the occupant. Since the inconvenience that caused discomfort can be resolved, comfort for the occupant can be improved.

Also, by installing the air purifier unit 1 on the ceiling 2 of the vehicle, the tobacco smoke flows to the ceiling from the flow of air in the passenger compartment, so that the vehicle is not installed on the rear tray behind the conventional vehicle. The cleaning effect is great because it is inhaled before filling the room.

(Other Embodiments) In the above embodiment, the exhaust duct 5 is provided on the ceiling portion 2 side of the vehicle, and the exhaust duct 5 is exhausted from the exhaust port 5a provided on the rear side of the vehicle.
For example, when an exhaust port can be installed near the pillar, the exhaust duct 5 may not be provided on the ceiling 2 and may extend from the air purification unit 1 on the ceiling 2 to the side of the vehicle.

Further, in the above embodiment, the switching control of the air outlet by turning the switching door 10 by the rotation of the actuator 12 using the temperature sensor 9 for detecting the temperature in the air purifier unit 1 has been described. Instead of using the temperature sensor 9, for example, an operation lever may be coupled to the rotation shaft 10a of the switching door 10, and the switching door 10 may be operated by means that can be manually operated by an occupant. Alternatively, a switch for switching between the exhaust mode and the indoor blowing mode may be provided so that the actuator 12 is directly driven. This eliminates the need for the temperature sensor 9 and the calculation means of the ECU 11, thereby reducing the cost of parts.

Further, as shown in FIG. 4, the temperature sensor 9 dedicated to the air purifier is not used, and the inside air temperature sensor Tr used for the vehicle air conditioner 6 for detecting the temperature inside the vehicle and the temperature outside the vehicle room are detected. A detection signal of one of the outside air temperature sensor Tam and the solar radiation sensor Ts for detecting the intensity of the amount of solar radiation, an air conditioner operation signal, and the like may be used. In this case, a signal may be input from the ECU 6a of the vehicle air conditioner 6 to the ECU 11a of the air purifier unit 1 so that the vehicle air conditioner 6 and the air purifier unit 1 operate in conjunction with each other.

When the signal input from the inside air temperature sensor Tr is used, since the temperature in the vehicle interior and the temperature in the air purifier unit 1 are different, the ECU 11a estimates and calculates data in anticipation of a temperature rise. I do. Also,
When the signal input from the outside air temperature sensor Tam is used, the exhaust mode is set when the outside air temperature is equal to or higher than a predetermined temperature.
Further, when using the signal input of the solar radiation sensor Ts,
The exhaust mode may be set when the intensity of solar radiation or the integrated value of the amount of solar radiation over time is large.

According to the embodiment having the above configuration, the existing detection sensors Tr, Tam, and Ts can be used, and the cost of parts can be reduced. Further, since the air cleaning unit 1 and the vehicle air conditioner 6 can be operated in an interlocked manner, the air conditioning control in the vehicle compartment can be quickly reduced to a predetermined temperature, and the energy saving operation can be performed.

In the above embodiment, the air purifier provided with the filter 7 for filtering air has been described. However, the present invention is not limited to this, and a filter having a layer of activated carbon for adsorbing odor components and the like may be used. . According to this, by passing high-temperature air through the filter, the accumulated odor of the odor component adsorbed on the filter can be released from the activated carbon, and the released odor can be exhausted out of the vehicle compartment and blown out into the vehicle interior. It has the effect of preventing.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a vehicle air purifier according to an embodiment mounted on a vehicle.

FIG. 2 is a longitudinal sectional view showing the overall configuration of the vehicle air purifier according to the embodiment.

FIG. 3 is a block diagram illustrating an electric control device of the vehicle air purifier according to the embodiment.

FIG. 4 is an overall configuration diagram showing an electrical control relationship between a vehicle air purifier and a vehicle air conditioner according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Air purifier unit (duct) 3 ... Inlet 4a ... Indoor air outlet 4b ... Outdoor air outlet 5 ... Exhaust duct 6 ... Vehicle air conditioner (air conditioner) 7 ... Filter 8 ... Blower 9 ... Temperature sensor (air blow switching) Means, heat load detecting means) 10: switching door (blowing switching means, switching means) 11: electric control device (blowing switching means)

Claims (5)

[Claims] 1. An air inlet (3) installed on a ceiling portion of a vehicle for sucking air in a vehicle interior, an indoor air outlet (4a) for blowing air sucked from the air inlet (3) into the vehicle interior, and A duct (1) having an outdoor air outlet (4b) for blowing air sucked in from the air inlet (3) to the outside of the vehicle, and having one end connected to the outdoor air outlet (4b) and the other end communicating with the outside of the vehicle. An exhaust duct (5), which is disposed in the duct (1), and inhales air in the vehicle compartment from the intake port (3) and removes air from the indoor outlet (4a) or the outdoor outlet (4b). Blower that blows out (8)
A filter (7) arranged in the duct (1) for filtering air taken in from the suction port (3); and a filter (7) arranged in the duct (1) and sucked from the suction port (3). Air switching means (9, 10, 11) for switching a blown air outlet to one of the indoor air outlet (4a) and the outdoor air outlet (4b). . 2. The blow-out switching means (9, 10, 11).
Is the indoor outlet (4a) or the outdoor outlet (4
b) switching means for switching to any one of the above, and switching control of the switching means (10) in accordance with the detection output of the thermal load detecting means (9) for detecting the temperature state in the vehicle compartment. The vehicle air purifier according to claim 1, wherein 3. The blow-off switching means (9, 10, 11).
Is the indoor outlet (4a) or the outdoor outlet (4
The vehicle air purifier according to claim 1, further comprising a switching unit (10) for switching to any one of (b) and (2), wherein the switching unit (10) is manually operated. 4. The heat load detecting means (9) is provided in the duct (1), has a temperature sensor (9) for detecting a temperature in the duct (1), and the blow-off switching means. (1
0, 11) receive the detection output of the temperature sensor (9),
When the temperature in the duct (1) is equal to or higher than a predetermined temperature, the blower (8) and the switching means (10) are controlled so that the air sucked into the duct (1) is blown out of the passenger compartment. The vehicle air purifier according to claim 2, wherein: 5. The air conditioner (6), which is mounted on a vehicle provided with an air conditioner (6), wherein the heat load detecting means (9) is mounted on the vehicle.
The vehicle air purifier according to claim 2, wherein a temperature state in the vehicle compartment is detected based on a signal of one of an inside air temperature, an outside air temperature, and an amount of solar radiation used by the vehicle.