JP2781681B2 - Vehicle ventilation system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle ventilation system.

[0002]

2. Description of the Related Art An example of a conventional vehicle ventilation system is shown in FIG. Reference numeral 1 denotes an air conditioning unit installed at the front of the vehicle, which is a blower 2, an evaporator 3, a heater 4, an air mix damper 5, a rear air distribution damper 6, and an inside / outside air switch for switching between an outside air introduction mode and an inside air circulation mode. A damper 9 and the like are provided.

During operation of the air conditioning unit 1, the blower 2 is driven, and the outside air or the vehicle interior air selected by switching the inside / outside air switching damper 9 is energized by the blower 2 and then flows through the evaporator 3. Cooled by having. The air cooled by the evaporator 3 is diverted by the air mix damper 5, and one of the air is heated by exchanging heat with the engine cooling water circulating through the heater 4 in the process of flowing through the heater 4, and then heated. 4 is mixed with the other stream that has bypassed to make conditioned air at a predetermined temperature.
When the rear-seat air distribution damper 6 is closed, the conditioned air is blown out from the front-seat outlet 7 into the front part of the vehicle interior 27 to mainly air-condition the front seat 30 side. When the rear-seat air distribution damper 6 is opened, a part of the conditioned air is blown out through the duct 8 to the rear inside the vehicle compartment 27.

[0004] Reference numeral 10 denotes an exhaust device which also serves as an air purifying device installed at the rear of the vehicle, and includes a blower 12, an exhaust damper 13, an air filter 14 such as a deodorizing filter and an electrostatic filter, and the like. During air purification, the exhaust damper 13 occupies the solid line position,
The air in the cabin sucked by the blower 12 is filtered by an air filter.
The air is discharged from the rear air outlet 15, which is purified by flowing through the inside 14, to the rear part in the vehicle interior 27. At the time of exhaust, the exhaust damper 13 is switched to the position shown by the broken line, and
And is discharged from the exhaust port 16 through the trunk room to the outside of the vehicle.

The detection values of the outside air temperature sensor 32, the room temperature sensor 33, the solar radiation sensor 34, the humidity sensor 35 and the like are determined by a multiplexer, A / D
Central processing unit CPU, read-only memory RO via converter, etc.
M is input to a control device (not shown) composed of a microcomputer having a random access memory RAM and the like. The control panel installed in front of the driver's seat includes an operation switch of the air conditioning unit 1, an operation switch of the exhaust device 10, an inside / outside air switching damper 9, a rear seat air distribution damper 6, and an exhaust damper 13.
Opening / closing switch, cooling operation switch for setting cooling operation, air volume changeover switch for switching the number of revolutions of blowers 2 and 12, AUTO switch for automatically controlling air conditioning control, room temperature setting device for arbitrarily setting the temperature in the passenger compartment 27 And the like, and these outputs are also input to the control device. The output of this control device is sent to dampers 5, 6, 9, 13 and blowers 2, 12, etc., via a driver (not shown) to control the operation thereof.

[0006]

In the above-mentioned conventional apparatus, there is a problem that when the smoke is smoked in the passenger compartment 27, even if the exhaust device 10 is operated, the dirt of the passenger compartment air cannot be immediately purified. there were.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has as its gist a domestic / external air switching damper for switching between an external air introduction mode and an internal air circulation mode. In a vehicle ventilator provided with an air conditioning unit and an exhaust device for exhausting vehicle interior air, a smoking detecting means for detecting use of a cigarette lighter and / or an ash tray; Means for operating the device, and switching means for setting the inside / outside air switching damper to the outside air introduction mode until a predetermined time set by a timer elapses after the smoking detection means detects smoking. It is in the vehicle ventilation system. An outside air contamination sensor for detecting outside air contamination, and a means for outputting a command for prohibiting switching to the outside air introduction mode when the detection value of the sensor is equal to or more than a set value may be provided.

[0008]

According to the present invention, since the above configuration is provided, the exhaust system is operated when smoking in the vehicle compartment is detected, and after the detection of smoking, the inside / outside air is switched until a predetermined time set by the timer elapses. The damper is switched to the outside air introduction mode. When an outside air contamination sensor for detecting outside air contamination and a means for outputting a command for prohibiting switching to the outside air introduction mode when the detection value of the sensor is equal to or more than a set value are provided, Is larger than the predetermined value, the inside / outside air switching damper is not switched to the outside air introduction mode.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
FIG. 1 is a control block diagram, and FIG. 2 is a flowchart.
The structure of the ventilation device is the same as that of the conventional one shown in FIG. As shown in FIG. 1, a smoking detection sensor 50 for detecting the use of a cigarette lighter and / or an ash tray.
Is output to the operation / stop means 36 of the exhaust system, and when the smoking detection sensor 50 detects smoking, the operation of the exhaust system 10 is determined. This determination result is output to the exhaust device 10, and the exhaust device 10 starts operating. At the same time, the result of this determination is sent to the switching means of the inside / outside air switching damper via the timer 37.
38, the inside / outside air switching damper 9 is switched to the outside air introduction mode based on a command from here on, and is maintained in this state until a certain time set in the timer 37 elapses. When the timer 37 times out, the switching means 38 of the inside / outside air switching damper decides to switch to the inside air circulation mode, and this decision is output to the inside / outside air switching damper 9.

As shown in FIG. 2, when the control starts in step 100, it is checked in step 101 whether or not the inside / outside air switching damper 9 is in the inside air circulation mode. If so, step 102 checks to see if smoking has been detected,
If this is the case, the exhaust system 10 starts operating in step 103. Next, at step 104, the inside / outside air switching damper 9 is switched to the outside air introduction mode. At step 105, it is checked whether or not a predetermined time has elapsed. If so, at step 106, the inside / outside air switching damper 9 is switched to the inside air circulation mode. If NO is determined in steps 101 and 102, the exhaust device 10 is stopped in step 107. Step 10
After steps 6 and 107, the process proceeds from step 108 to the next control routine.

In the first embodiment, when the inside / outside air switching damper 9 is in the inside air circulation mode, when the smoking in the vehicle compartment 27 is detected, the exhaust device 10 is operated and the timer 37 is set. Since the inside / outside air switching damper 9 is switched to the outside air introduction mode until the given time elapses, the inside of the vehicle room 27 can be quickly ventilated. Note that the timer
37 is preferably set to a time sufficient to ventilate the interior of the vehicle room 27, for example, 10 minutes or more.

A second embodiment of the present invention is shown in FIGS. 3 and 4, wherein FIG. 3 is a control block diagram and FIG. 4 is a flowchart. As shown in FIG. 3, the detection value of the dirt sensor 51 for detecting dirt in the outside air is input to the comparing means 39, where it is compared with the set value input from the setting means 40. When the detected value is larger than the set value, the comparing means 39 instructs the switching means 38 of the inside / outside air switching damper to prohibit the switching to the outside air introduction mode.

As shown in FIG. 4, after the exhaust system 10 is operated in step 103, it is determined in step 110 whether or not the degree of outside air contamination is equal to or greater than a set value. If so, the process returns to step 110. In the second embodiment, since the inside / outside air switching damper 9 is prevented from being switched to the outside air introduction mode when the outside air is dirty, it is possible to prevent the dirty outside air from being introduced into the vehicle interior 27. .

[0014]

According to the present invention, when smoking in the vehicle compartment is detected, the exhaust device is operated, and after the detection of smoking, the inside / outside air switching damper is set to the outside air introduction mode until a predetermined time set by the timer elapses. Since the switching can be performed, the smoke of the tobacco in the vehicle compartment can be quickly discharged to the outside of the vehicle. When an outside air contamination sensor for detecting outside air contamination and a means for outputting a command to inhibit switching to the outside air introduction mode when the detection value of this sensor is equal to or greater than a set value are attached, Can be prevented from being introduced into the vehicle interior.

[Brief description of the drawings]

FIG. 1 is a control block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart of the first embodiment.

FIG. 3 is a control block diagram showing a second embodiment of the present invention.

FIG. 4 is a flowchart of a second embodiment.

FIG. 5 is a schematic configuration diagram of a conventional vehicle ventilation device.

[Explanation of symbols]

 9 Inside / outside air switching damper 10 Exhaust device 50 Smoking detection sensor 36 Exhaust device start / stop means 37 Timer 38 Inside / outside air switching damper switching means 51 Dirt sensor 39 Switching prohibition means to outside air introduction mode 40 Setting means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-57021 (JP, A) Japanese Utility Model Showa 55-135612 (JP, U) Japanese Utility Model Application Showa 60-178213 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) B60H 1/00-1/24

Claims (2)

(57) [Claims] An air conditioning unit having an inside / outside air switching damper for switching between an outside air introduction mode and an inside air circulation mode, and a vehicle ventilation system including an exhaust device for exhausting vehicle interior air, wherein a cigarette lighter and / or an ash tray are provided. Smoking detection means for detecting use, and means for operating the exhaust device when the smoking detection means detects smoking,
Switching means for setting the inside / outside air switching damper to an outside air introduction mode until a predetermined time set by a timer elapses after the smoking detecting means detects smoking. 2. An outside air contamination sensor for detecting outside air contamination, and means for outputting a command for prohibiting switching to an outside air introduction mode when the detection value of the sensor is equal to or greater than a set value. The vehicle ventilator according to claim 1, wherein: