JP2016155432A - Vehicle voc reduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently reduce VOC in a vehicle cabin as time elapses after manufacturing of a vehicle.SOLUTION: Suction ports 5, 6 are disposed at a lower part of a vehicle cabin 3 to open in the vehicle cabin 3. An exhaust port 7 is disposed above the suction ports 5, 6 and opens to the outside of a vehicle. A ventilation space 4 includes a vertical ventilation passage 9 extending in a vertical direction at the exterior side of the vehicle cabin 3. A lower part and an upper part of the vertical ventilation passage 9 respectively communicate with the suction ports 5, 6 and the exhaust port 7. Air in the vehicle cabin 3 flows into the ventilation space 4 from the suction ports 5, 6 and circulates in the vertical ventilation passage 9 to be exhausted to the outside of the vehicle from the exhaust port 7. At least a part of a vertical ventilation passage formation member (a rear pillar) 20 which defines the vertical ventilation passage 9 is exposed to the outside of the vehicle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a VOC reduction device that reduces VOC (volatile organic compounds) contained in air in a vehicle cabin of a vehicle.

  Conventional measures for reducing VOCs include a method of reducing the amount of VOC used in the material constituting the passenger compartment, a method of using a material containing an alternative component of the regulatory component, etc. (for example, patents) Reference 1).

Japanese Patent Laid-Open No. 2004-49992

  However, there is a limit to the measures for the material itself, and it is difficult to say that the concentration of VOC in the air in the passenger compartment is at a low level when the VOCs emitted from each material are added together.

  Therefore, an object of the present invention is to provide a VOC reduction device that can efficiently reduce VOCs contained in the air in the passenger compartment as time elapses after the vehicle is manufactured.

  In order to achieve the above object, a first aspect of the present invention is a VOC reduction device that reduces VOC contained in air in a vehicle cabin, and includes a suction port, a discharge port, and a ventilation space.

  The suction port is disposed in the lower part of the vehicle compartment and opens into the vehicle compartment. The discharge port is disposed above the suction port and opens to the outside of the vehicle. The ventilation space includes a vertical ventilation path extending in the vertical direction outside the passenger compartment. The lower part and the upper part of the vertical air passage communicate with the suction port and the discharge port, respectively. Air in the passenger compartment flows into the ventilation space from the suction port, flows through the vertical ventilation path, and is discharged out of the vehicle through the discharge port. At least a part of the vertical air passage forming member that defines the vertical air passage is exposed outside the vehicle.

  In the above configuration, when the vertical air passage forming member is heated by solar radiation or the like and the temperature of the air in the vertical air passage rises, an updraft is generated in the vertical air passage. Due to this rising airflow, the vicinity of the suction port becomes negative pressure, and the air in the vehicle interior including the VOC generated from the interior parts in the vehicle interior is taken into the ventilation space from the suction port. The air in the ventilation space taken in from the suction port is sent upward from below by the updraft in the vertical ventilation path, and is discharged out of the vehicle from the discharge port. Since the passenger compartment is ventilated by the discharge of air from the outlet, VOC in the passenger compartment can be efficiently reduced. Further, when the vehicle is traveling, the vicinity of the discharge port becomes negative pressure due to the flow of the traveling wind, and the exhaust of the air in the ventilation space to the outside of the vehicle is promoted, so that the ventilation performance is improved and the VOC reduction effect is also improved.

  A second aspect of the present invention is the VOC reduction device according to the first aspect, wherein the vertical air passage forming member is a pillar that stands up outside the vehicle width direction of the passenger compartment.

  In the above configuration, since the internal space of the pillar that stands up outside the vehicle width direction of the passenger compartment is used as a vertical air passage, there is no need to separately provide a vertical air passage forming member.

  A third aspect of the present invention is the VOC reduction device according to the first or second aspect, and includes a damper and a control means. The damper is provided in the suction port, the discharge port, or the ventilation space, and can increase or decrease the ventilation amount of the passenger compartment due to the discharge of air from the discharge port. The control means controls the damper so that the ventilation amount in the passenger compartment is increased or decreased by controlling the damper.

  The control means may control the damper so that the ventilation amount decreases when the air conditioner that cools and heats the passenger compartment is activated (air conditioning) and increases when the air conditioner is stopped. Further, the control means may control the damper so that the ventilation amount decreases according to the increase / decrease of the traveling speed detected by the vehicle speed detection means.

  In the said structure, the efficiency of air conditioning can be improved by reducing ventilation amount at the time of the air conditioning of a vehicle interior. Moreover, excessive ventilation can be suppressed by decreasing the ventilation amount according to the increase / decrease of the traveling speed of the vehicle, and reducing the ventilation amount from the outlet during high-speed traveling where the ventilation amount can be sufficiently secured.

  According to the present invention, the VOC contained in the air in the passenger compartment can be efficiently reduced with the passage of time after vehicle manufacture.

It is a side view which shows typically the cab provided with the VOC reduction apparatus which concerns on 1st Embodiment of this invention. It is II-II arrow sectional drawing of FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1. It is a block diagram which shows the principal part of the VOC reduction apparatus which concerns on 2nd Embodiment of this invention.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In the figure, the arrow FR indicates the front of the vehicle, and the arrow UP indicates the upper side.

  As shown in FIGS. 1 to 3, a cab 2 of a vehicle (truck) 1 includes a passenger compartment 3 on which a driver or the like gets in, and the VOC reduction device is a VOC (volatilizer) contained in the air in the passenger compartment 3. In order to reduce the organic compound), the cab 2 is provided. In the following description, a VOC contained in the air in the vehicle interior may be referred to as a vehicle interior VOC.

  As shown in FIGS. 1 to 3, a pair of left and right rear pillars (vertical air passage forming members) 20 are disposed on the outer side in the vehicle width direction of the rear portion of the passenger compartment 3. The rear pillar 20 has a tubular shape in which a rear pillar inner 20A on the inner side of the vehicle and a rear pillar outer 20B on the outer side of the vehicle are connected to form a closed cross section. . The door opening 21 is opened and closed by a door 24 having a window opening 22 (window glass 23). Inside the rear pillar 20 (between the rear pillar inner 20 </ b> A and the rear pillar outer 20 </ b> B), a vertical air passage 9 extending in the vertical direction is defined outside the passenger compartment 3. The outer surface of the rear pillar outer 20 </ b> B is exposed at the side portion of the cab 2. That is, at least a part of the rear pillar 20 that defines the vertical ventilation path 9 is exposed outside the vehicle.

  The upper end portions of the left and right rear pillars 20 are connected by an upper communication path forming member 24, and the upper communication path forming member 24 is joined to the lower surface of the ceiling panel 25 of the cab 2 exposed at the upper part of the cab 2. The upper communication passage 10 is partitioned between The upper communication passage 10 extends in the vehicle width direction, and both end portions of the upper communication passage 10 communicate with the upper end portions of the left and right vertical air passages 9, respectively.

  The lower communication passage forming member 26 connects the lower ends of the left and right rear pillars 20, and the lower communication passage forming member 26 defines the lower communication passage 11 between the floor panel 27 of the vehicle compartment 3. The lower communication path 11 extends in the vehicle width direction, and both ends of the lower communication path 11 communicate with the lower ends of the left and right vertical air passages 9 respectively.

  A pair of left and right lower air passage molding members 28 extending in the front-rear direction on both sides in the vehicle width direction are joined to the lower surface of the floor panel 27. The left and right lower air passage formation members 28 partition the left and right lower air passages 8 between the left and right lower air passage forming members 28 and the floor panel 27 of the passenger compartment 3. The front end of the lower air passage 8 is closed, and the rear end communicates with the lower ends of the left and right vertical air passages 9, respectively.

  The lower ventilation path 8, the vertical ventilation path 9, the upper communication path 10, and the lower communication path 11 constitute a ventilation space 4 formed outside the vehicle compartment 3.

  A pair of left and right suction ports 5 are formed on both sides of the front portion of the floor panel 27 in the vehicle width direction. The left suction port 5 communicates the left lower ventilation path 8 and the vehicle compartment 3, and the right suction port 5 communicates the right lower ventilation channel 8 and the vehicle interior 3. Each suction port 5 is covered with a perforated plate, a mesh material, or the like in order to prevent an object from falling into the lower air passage 8 from the inside of the passenger compartment 3.

  Suction ports 6 are formed in the lower portions of the left and right rear pillars 20, respectively. The left suction port 6 communicates the lower part of the left vertical ventilation path 9 and the vehicle compartment 3, and the right suction port 6 communicates the lower part of the right vertical ventilation channel 9 and the vehicle interior 3.

  Three outlets 7 are formed in the rear portion of the ceiling panel 25 side by side in the vehicle width direction. Each discharge port 7 communicates the outside of the cab 2 with the upper communication path 10. Each discharge port 7 has a structure in which rainwater or the like does not enter the ventilation space 4.

  In this manner, each of the suction ports 5 and 6 is disposed in the lower portion of the vehicle compartment 3 and opens into the vehicle interior 3, and each of the discharge ports 7 is disposed above the suction ports 5 and 6 and opens to the outside of the vehicle. To do. The lower and upper portions of the vertical air passage 9 communicate with the suction ports 5 and 6 and the discharge port 7, respectively, and the air flowing into the suction ports 5 and 6 from the inside of the vehicle compartment 3 moves upward through the vertical air passage 9 from below. And discharged from the outlet 7 to the outside of the vehicle. The positions and numbers of the suction ports 5 and 6 and the discharge ports 7 are not limited to the above positions and numbers, and can be arbitrarily set.

  Next, a method for reducing the vehicle interior VOC will be described.

  When the rear pillar 20 and the ceiling panel 25 are warmed by solar radiation or the like and the temperature of the air in the vertical ventilation path 9 rises, an updraft is generated in the vertical ventilation path 9. Due to this upward air flow, the vicinity of the suction ports 5 and 6 becomes negative pressure, and the air in the vehicle compartment 3 including the VOC generated from the interior parts in the vehicle interior 3 flows from the suction ports 5 and 6 into the ventilation space 4 (lower air passage 8). Or it is taken in into the lower part of the vertical ventilation path 9). The air in the ventilation space 4 taken in from the suction ports 5 and 6 is sent upward from below by the ascending air current in the vertical ventilation path 9 and discharged from the discharge port 7 to the outside of the vehicle. Since the passenger compartment 3 is ventilated by the discharge of air from the outlet 7, the passenger compartment VOC can be efficiently reduced. Further, when the vehicle 1 is traveling, the vicinity of the discharge port 7 becomes negative pressure due to the flow of traveling wind along the ceiling panel 25, and the discharge of the air in the ventilation space 4 (upper communication passage 10) to the outside of the vehicle is promoted. Ventilation performance is improved and the effect of reducing vehicle interior VOC is also improved.

  Therefore, the vehicle interior VOC can be efficiently reduced with the passage of time after the vehicle is manufactured, and the period required for reducing the vehicle interior VOC can be shortened.

  In addition, since the internal space of the rear pillar 20 that stands up outside the vehicle compartment 3 in the vehicle width direction is used as the vertical air passage 9, there is no need to separately provide a member for forming the vertical air passage.

  Next, a second embodiment of the present invention will be described in detail with reference to the drawings. In addition, the VOC reduction apparatus of this embodiment adds another structure to the VOC reduction apparatus of 1st Embodiment, The description is abbreviate | omitted about the structure similar to 1st Embodiment.

  As shown in FIG. 4, the VOC reduction device of the present embodiment includes a damper 31 and a control unit (control means) 32.

  The damper 31 is provided at each of the suction ports 5 and 6 (see FIGS. 2 and 3), and increases or decreases the ventilation amount by changing the opening area of the suction ports 5 and 6. The damper 31 has a drive unit such as a motor that operates and stops according to a control signal from the control unit 32, and the opening area of the suction ports 5 and 6 is changed by the operation and stop of the drive unit.

  The control unit 32 includes a storage unit 33 and a CPU (Central Processing Unit) 34. The storage unit 33 is configured by a recording medium such as a RAM (Random Access Memory) and a ROM (Read Only Memory), for example, and a processing program for the CPU 34 to execute various processes, various data used when executing the various processes, and the like. Remember. The CPU 34 functions as the opening amount determination unit 35 and the damper control unit 36 by executing the processing program stored in the storage unit 33.

  The vehicle 1 includes an air conditioner 38 that cools and heats the passenger compartment 3 and a vehicle speed sensor (vehicle speed detection means) 37 that detects a traveling speed (vehicle speed) of the vehicle 1. The air conditioner 38 outputs an air conditioning operation signal to the control unit 32 during its operation (air conditioning). The vehicle speed sensor 37 sequentially detects the traveling speed of the vehicle 1 and outputs it to the control unit 32.

  The opening amount determination unit 35 determines the opening amounts of the suction ports 5 and 6 so that the ventilation amount decreases when the air conditioner 38 operates and the ventilation amount increases when the air conditioning device 38 stops. Further, the opening amount determination unit 35 determines the opening amounts of the suction ports 5 and 6 so that the ventilation amount is increased or decreased according to the increase or decrease of the traveling speed detected by the vehicle speed sensor 37. For example, when the air conditioner 38 is activated, the opening amount of the suction ports 5 and 6 is set to zero (closed) or a predetermined minimum opening amount regardless of the traveling speed, and when the air conditioner 38 is stopped, the traveling speed is zero. In the case of (the vehicle 1 is stopped), the predetermined maximum reference opening amount is set, and the opening amount is gradually decreased as the traveling speed increases. The damper control unit 36 controls the damper 31 so that the opening amount determined by the opening amount determination unit 35 is obtained.

  In the present embodiment, since the ventilation amount is zero or the minimum amount at the time of air conditioning in the passenger compartment 3, the efficiency of air conditioning can be improved. In addition, since the ventilation amount decreases as the traveling speed of the vehicle 1 increases or decreases, the ventilation amount from the discharge port 7 can be reduced during high-speed traveling where the ventilation amount can be sufficiently secured, and excessive ventilation is suppressed. Can do.

  The damper 31 may be provided in the discharge port 7 or the ventilation space 4 without being provided in the suction ports 5 and 6.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, the internal space of the rear pillar 20 may not be used as the vertical air passage 9, and the internal space of the front pillar may be used as the vertical air passage, and the vertical air passage is located at a position deviated forward or backward from the window glass 23. You may provide the member which forms this separately.

  In addition, the VOC reduction device of the above embodiment may be applied to vehicles other than trucks such as passenger cars.

  The VOC reduction device of the present invention can be applied to various vehicles.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Cab 3 Car compartment 4 Ventilation space 5,6 Intake port 7 Outlet 8 Lower ventilation channel 9 Vertical ventilation channel 10 Upper communication channel 11 Lower communication channel 20 Rear pillar (vertical ventilation channel formation member)
20A Rear pillar inner 20B Rear pillar outer 25 Ceiling panel 27 Floor panel 31 Damper 32 Control unit (control means)
37 Vehicle speed sensor (vehicle speed detection means)
38 Air conditioner

Claims (3)

A VOC reduction device for reducing VOC contained in air in a passenger compartment,
A suction port disposed in a lower portion of the vehicle compartment and opening into the vehicle cabin;
A discharge port disposed above the suction port and opening to the outside of the vehicle;
A ventilation space including a vertical ventilation path extending in the vertical direction outside the vehicle compartment,
The lower and upper portions of the vertical ventilation path communicate with the suction port and the discharge port, respectively.
The air in the passenger compartment flows into the ventilation space from the suction port, flows through the vertical ventilation path, and is discharged outside the vehicle from the discharge port.
A VOC reduction device for a vehicle, wherein at least a part of the vertical air passage forming member that divides the vertical air passage is exposed outside the vehicle. The VOC reduction device according to claim 1,
The VOC reduction device for a vehicle, wherein the vertical air passage forming member is a pillar that stands up outside the vehicle compartment in the vehicle width direction. The VOC reduction device according to claim 1 or 2,
A damper provided in the suction port, the discharge port or the ventilation space and capable of increasing or decreasing the ventilation amount of the vehicle compartment by discharging air from the discharge port;
And a control means for controlling the damper so as to increase or decrease the ventilation amount of the passenger compartment. A VOC reduction device for a vehicle, comprising:

Images