JP2005145340A - Inside cabin air enhancing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inside cabin air enhancing system capable of controlling taking-in of the air to a cabin from the outside air and controlling so that the quality of the air in the cabin is sensed and enhanced. <P>SOLUTION: The inside cabin air enhancing system includes an exhaust gas sensor 2 to sense the exhaust gas concentration of the outside air of the vehicle, and in accordance with the sensing result of the gas sensor 2, changes over between taking-in of the outside air and performing the inner air circulation using an intake door 11, wherein the arrangement further includes a gas sensing IR sensor 4 to sense the gas condition in the cabin, an air cleaner 5 to reform the air condition in the cabin, an ion generator 6, a high-concentration oxygen generator 7, and an inside cabin air control part 8 to control at least the air cleaner 5 in accordance with the sensing result of the IR sensor 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to the technical field of a vehicle interior air enhancement system that detects a dirty state of outside air and controls intake into the vehicle interior.

Conventionally, the drive of the intake door actuator is controlled so that the exhaust gas concentration of the outside air is detected and the outside air mode is set in the clean state where the exhaust gas concentration is low, and the inside air mode is set in the outside air contamination state where the exhaust gas concentration is high. . In the passenger compartment, the increase in the CO2 concentration due to the exhalation of the occupant is taken into consideration so as not to exceed the maximum continuous closing time of the intake door (see, for example, Patent Document 1).
JP 2000-135917 A (page 2-8, full view)

However, conventionally, only the air from the vehicle cowl provided with the exhaust gas sensor to the vehicle interior is controlled, and it has not been possible to cope with the deterioration of the air quality in the vehicle interior when the windows and doors are opened and closed.
In addition, only the maximum time during which outside air is not taken in is set for the increase in CO2 due to the exhalation of the occupant, and the increase in CO2 cannot be reliably controlled.

This point will be described in detail.
The present invention has been made paying attention to the above-mentioned problems, and its object is to control the intake of air from outside air into the vehicle interior and to control and detect the quality of air in the vehicle interior. An object of the present invention is to provide a vehicle interior air enhancement system that can be used.

  In order to achieve the above object, according to the present invention, an exhaust gas sensor for detecting the exhaust gas concentration of the outside air of the vehicle is provided, and whether to take in the outside air or to circulate the inside air according to the detection result of the exhaust gas sensor In the vehicle interior air improvement system, the gas detection means for detecting the gas state in the vehicle interior is provided, the air quality changing means for reforming the air condition in the vehicle interior is provided, and the detection result of the gas detection means is Accordingly, control means for controlling the air quality changing means is provided.

  Therefore, in the present invention, not only the exhaust gas entering the vehicle interior from the vehicle cowl, but also the exhaust gas entering the vehicle interior from the doors and windows, and the state of the air in the vehicle interior due to the increase in CO2 due to the breath of the occupant Can be detected in a favorable state, and a more comfortable in-vehicle environment can be realized.

  Hereinafter, an embodiment for realizing a vehicle interior air enhancement system of the present invention will be described based on Example 1 corresponding to the invention according to claims 1, 2, 3, 4, 5, and 6.

First, the configuration will be described.
FIG. 1 is an explanatory diagram of a vehicle interior air enhancement system according to the first embodiment. FIG. 2 is an explanatory diagram illustrating an air purifier, an ion generator, and a high-concentration oxygen generator of the vehicle interior air enhancement system according to the first embodiment. FIG. 3 is a flowchart showing a processing flow of the vehicle interior air enhancement system of the first embodiment.

The vehicle interior air enhancement system of the first embodiment includes an intake door actuator 1, an intake door 11, an exhaust gas sensor 2, an intake control unit 3, a gas detection IR sensor 4, an air cleaner 5, an ion generator 6, and high-concentration oxygen generation. The apparatus 7 and the vehicle interior air control unit 8 are mainly configured.
The intake door 11 is provided at an air intake port of an air conditioner unit provided in the front portion of the passenger compartment, and opens and closes by driving the intake door actuator 1.
Thereby, the air conditioner unit switches between an outside air intake state and an inside air circulation state.

The exhaust gas sensor 2 has an element whose resistance value changes by reacting with gas, and is provided in the front part of the vehicle.
The intake control unit 3 controls the drive of the intake door actuator 1 according to the detection value of the exhaust gas sensor 2.
The IR sensor 4 for gas detection is a combination of a non-spectral infrared sensor and a filter 51 that passes a specific wavelength.
The filter 51 passes a specific wavelength, for example, 3.4 μm for HC (unburned hydrocarbon), 4.3 μm for CO 2 (carbon dioxide), and 4.7 μm for CO (carbon monoxide). is there. Therefore, the gas amount can be detected from the magnitude of the detection value when the specific wavelength is passed.

The air purifier 5 is provided in the rear parcel R, and includes a blower fan 52 that takes air in the passenger compartment into the air purifier 5 and a filter 51 that cleans the air by filtering it.
The cleaned air is sent from a part of the pillar C through the duct D to the vehicle interior.
The ion generator 6 generates ions having a sterilizing effect and a refreshing effect on the occupant and releases them in the middle of the duct D so as to be sent into the passenger compartment.
The high-concentration oxygen generator 7 generates high-concentration oxygen that has a refreshing effect on the occupant, releases it in the middle of the duct D, and sends it to the passenger compartment.

The vehicle interior air control unit 8 controls ON / OFF of the air purifier 5 according to the detection result of the IR sensor 4 for gas detection. Moreover, ON / OFF is controlled by the operation of the passenger.
In the first embodiment, the ion generator 6 and the high-concentration oxygen generator 7 are turned on and off by the operation of the vehicle occupant. The concentration oxygen generator 7 may be turned on / off.

Next, the operation will be described.
[Car interior air quality improvement]
FIG. 1 is a flowchart showing the flow of the overall process of improving the air quality in the passenger compartment executed by the passenger compartment air control unit 8 according to the first embodiment. Each step will be described below.

  In step S1, the detection value of the gas detection IR sensor 4 is captured.

  In step S2, it is determined whether or not a specific wavelength has been detected with a signal intensity equal to or greater than a threshold. If detected, the process proceeds to step S4, and if not detected, the process proceeds to step S3.

  In step S3, it is determined whether or not an ON operation has been performed on the air cleaner 5 by an occupant operation. If the ON operation has been performed, the process proceeds to step S4. If there is no ON operation, the process proceeds to step S5. Transition.

  In step S4, the air purifier 5 is turned on.

  In step S5, the air purifier 5 is turned off so as not to operate.

  In step S6, it is determined whether or not an ON operation has been performed by the occupant's operation on the high-concentration oxygen generator 7. If the ON operation has been performed, the process proceeds to step S7. The process proceeds to S8.

  In step S7, the high concentration oxygen generator 7 is turned on.

  In step S8, the high concentration oxygen generator 7 is turned off so as not to operate.

  In step S9, it is determined whether or not an ON operation has been performed on the ion generator 6 by an occupant operation. If the ON operation has been performed, the process proceeds to step S10. If there is no ON operation, the process proceeds to step S11. Transition.

[Activation of cabin air]
<1> Basic Processing In the vehicle of the vehicle interior air enhancement system according to the first embodiment, the state of exhaust gas outside the vehicle is detected by the exhaust gas sensor 2 provided near the front end of the vehicle as shown in FIG. The intake control unit 3 drives the intake door actuator 1 so that the odor intensity detected by the exhaust gas sensor 2 is 3 or less, and performs switching control of the intake door 11 so that the outside air intake state and the inside air circulation state of the vehicle interior air conditioner are controlled. Switch.
The intake control unit 3 also performs control for taking in outside air appropriately so that the amount of CO2 in the vehicle interior does not increase excessively by continuing the state of inside air circulation for a long time.

<2> Further activation of vehicle interior air In the vehicle of the vehicle interior air enhancement system of the first embodiment, the detected odor intensity is maintained at 3 or less by the switching control of the intake door 11. After that, for example, when CO2 is detected by the gas detection IR sensor 4 in the vehicle interior, the air purifier 5 is operated under the control of the vehicle interior air control unit 8 in the process of step S2. Moreover, the ion generator 6 and the high concentration oxygen generator 7 operate | move by operation of a passenger | crew by operation accompanying this.
Then, by passing through the filter 51 of the air purifier 5, the purified air is discharged from the pillar C into the vehicle compartment through the duct D as shown in FIG. Further, ions or high-concentration oxygen generated by the activated ion generator 6 or high-concentration oxygen generator 7 are released.

Therefore, the air activated in the vehicle interior can be increased, and the air in the vehicle interior deteriorated by CO2 is discharged from the drafter along the air flow in the vehicle interior.
As a result, the passenger compartment is filled with air preferable for the passenger.
Therefore, the air in the vehicle interior is cleaned and the air is activated by relaxing ions and high-concentration oxygen, resulting in a comfortable vehicle interior.

Next, the effect will be described.
In the vehicle interior air enhancement system of the first embodiment, the effects listed below can be obtained.
(1) An exhaust gas sensor 2 for detecting the exhaust gas concentration of the outside air of the vehicle is provided, and the air in the vehicle interior is switched by the intake door 11 depending on the detection result of the exhaust gas sensor 2 to take in the outside air or to circulate the inside air. In the improvement system, a gas detection IR sensor 4 for detecting the gas state in the passenger compartment is provided, and an air purifier 5, an ion generator 6, and a high-concentration oxygen generator 7 for improving the air state in the passenger compartment are provided. The vehicle interior air control unit 8 that controls the air purifier 5 at least according to the detection result of the gas detection IR sensor 4 is provided, so that the air condition in the vehicle interior is improved and the interior environment is comfortable. Can be. Especially when the surrounding exhaust gas environment is bad, such as when there is heavy traffic or the surrounding traffic is heavy, and the inside air circulation state is long, or when there are many passengers and a lot of CO2 is generated due to exhalation. The air environment in the car can be kept good.

  (2) Since the gas detection means is the IR sensor 4 for gas detection provided with the filter 51 for detecting a predetermined wavelength corresponding to the gas, it is possible to detect the state of the gas in the vehicle reliably and at a reduced cost. .

  (3) Since the infrared sensor detects at least one of HC, CO, and CO2, it detects HC and CO, which are undesirable components in the exhaust gas, and detects the exhaust gas state in the passenger compartment. It can be detected reliably, or the degree of deterioration of the air in the passenger compartment can be reliably detected by detecting CO2 generated by the breath of the passenger.

  (4) Since the air quality changing means includes the air purifier 5 provided with the filter 51, the air in the vehicle is improved by removing dust and dirt in the air to clean the air in the vehicle interior. .

  (5) Since the air quality changing means includes the ion generator 6 that performs sterilization, the air in the vehicle is in a good condition and the passenger is refreshed by releasing ions into the vehicle interior. be able to.

  (6) Since the air quality changing means includes the high-concentration oxygen generator 7 that generates high-concentration oxygen, the occupant can be refreshed by releasing high-concentration oxygen into the passenger compartment.

As mentioned above, although the vehicle interior air improvement system of this invention has been demonstrated based on Example 1, it is not restricted to these Examples about a concrete structure, The invention which concerns on each claim of a claim Design changes and additions are permitted without departing from the gist of the present invention.
In the first embodiment, the air purifier 5, the ion generator 6, and the high concentration oxygen generator 7 are used as the air quality changing means. However, the air quality may be changed by another means.
The air purifier 5, the ion generator 6, and the high concentration oxygen generator 7 may be provided separately or integrally.
A plurality of infrared sensors, which are gas detection means, may be provided together with a filter 51 combined so as to detect a plurality of gases, so as to determine both the state of exhaust gas in the passenger compartment and the deterioration of air due to expiration. .

It is explanatory drawing of the vehicle interior air improvement system of Example 1. FIG. It is explanatory drawing which shows the air cleaner, ion generator, and high concentration oxygen generator of the vehicle interior air improvement system of Example 1. FIG. It is a flowchart which shows the flow of a process of the vehicle interior air improvement system of Example 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Intake door actuator 11 Intake door 2 Exhaust gas sensor 3 Intake control part 4 IR sensor for gas detection 5 Air cleaner 51 Filter 52 Blower fan 6 Ion generator 7 High concentration oxygen generator 8 Car interior air control part C Pillar D Duct R Rear parcel

Claims (6)

An exhaust gas sensor for detecting the exhaust gas concentration of the outside air of the vehicle is provided,
Depending on the detection result of the exhaust gas sensor, the intake door switches between taking outside air or circulating inside air.
In the passenger compartment air improvement system,
Provide gas detection means to detect the state of gas in the passenger compartment,
Air quality changing means for improving the air condition in the passenger compartment is provided,
A vehicle interior air enhancement system comprising a control means for controlling the air quality changing means in accordance with a detection result of the gas detection means. In the vehicle interior air enhancement system according to claim 1,
The gas detection means is
An infrared sensor provided with a filter for detecting a predetermined wavelength according to the gas;
A vehicle interior air enhancement system. In the vehicle interior air enhancement system according to claim 2,
The infrared sensor is
Detecting at least one of HC, CO and CO2,
A vehicle interior air enhancement system. In the vehicle interior air enhancement system according to any one of claims 1 to 3,
The air quality changing means is
Air purifier with filter
A vehicle interior air enhancement system characterized by comprising: In the vehicle interior air enhancement system according to any one of claims 1 to 4,
The air quality changing means is
Ion generator for sterilization,
A vehicle interior air enhancement system characterized by comprising: In the vehicle interior air enhancement system according to any one of claims 1 to 5,
The air quality changing means is
A high-concentration oxygen generator that generates high-concentration oxygen
A vehicle interior air enhancement system characterized by comprising:

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