CN113242807A - Air conditioner for vehicle - Google Patents
Air conditioner for vehicle Download PDFInfo
- Publication number
- CN113242807A CN113242807A CN201980083435.8A CN201980083435A CN113242807A CN 113242807 A CN113242807 A CN 113242807A CN 201980083435 A CN201980083435 A CN 201980083435A CN 113242807 A CN113242807 A CN 113242807A
- Authority
- CN
- China
- Prior art keywords
- air
- blower
- sensor
- air conditioning
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004378 air conditioning Methods 0.000 claims abstract description 119
- 239000002245 particle Substances 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 239000013618 particulate matter Substances 0.000 claims abstract description 7
- 239000011236 particulate material Substances 0.000 claims abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000004043 responsiveness Effects 0.000 description 6
- 230000001143 conditioned effect Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
An air conditioning device for a vehicle is provided with: an air conditioning case (101, 140, 150) that forms an air passage through which air blown into a vehicle interior flows; a blower (130) which is disposed inside the air conditioning casing and sucks the air into the air conditioning casing; and a particle detection unit (200) that detects the particle concentration of the particulate matter contained in the air. The particle detection unit includes: a light emitting unit (210) that irradiates the air with light; a light receiving unit (220) that receives scattered light scattered by the light emitted from the light emitting unit hitting the particulate material; and a sensor case (230) that houses the light emitting section and the light receiving section. A sensor introduction port (231) is formed in the sensor housing, and introduces a part of the air sucked into the air conditioning housing by the operation of the blower into the sensor housing.
Description
Cross reference to related applications
The present application is based on japanese patent application No. 2018-238528, applied 12/20/2018, the contents of which are incorporated herein by reference.
Technical Field
The present invention relates to a vehicle air conditioner including a particle detection unit that detects a particle concentration of a particulate substance.
Background
Conventionally, as an apparatus for detecting particles in air, there is an apparatus described in patent document 1. The device is provided with: a casing forming an air passage, and an air motor sucking air inside the vehicle compartment or air outside the vehicle compartment into the casing. Then, the air sucked into the casing is irradiated with light, and the concentration of the particles is detected by receiving scattered light scattered by the light.
Documents of the prior art
Patent document
Patent document 1: chinese utility model application publication No. 203287312
According to the study of the inventors, in the device described in patent document 1, since the air flow rate of the air motor that sucks air into the housing is small, the concentration of particles contained in air at a remote place cannot be detected with high accuracy. For example, in the case of a configuration in which the case is disposed inside the instrument panel of the vehicle and the concentration of particles contained in the air near the body of the occupant seated in the seat is detected, the air at a distance near the body of the occupant cannot be sufficiently sucked into the case, and therefore, there is a problem in that the concentration of particles cannot be detected with high accuracy. Further, when the air volume of the air motor is small, the time for the air to reach the housing becomes long, and there is also a problem of poor responsiveness. If the suction capacity of the air motor is increased, air near the body of an occupant of the vehicle may be sucked into the housing, and when the suction capacity of the air motor is increased, turbulence occurs as the flow velocity increases, so that the concentration of particles cannot be detected with high accuracy.
Disclosure of Invention
The purpose of the present invention is to enable the concentration of particulate matter contained in air at a remote location to be measured with higher accuracy and higher responsiveness.
According to one aspect of the present invention, an air conditioner for a vehicle includes: an air conditioning case forming an air passage through which air blown into a vehicle compartment flows; a blower disposed inside the air conditioning case and configured to suck the air into the air conditioning case; and a particle detection unit that detects a particle concentration of a particulate substance contained in the air, the particle detection unit including: a light emitting section that irradiates air with light; a light receiving unit that receives scattered light scattered by light emitted from the light emitting unit hitting the particulate material; and a sensor case that houses the light emitting section and the light receiving section, and in which a sensor introduction port that introduces a part of the air sucked into the air conditioning case by the operation of the blower into the sensor case is formed.
According to this configuration, since the sensor housing is provided with the sensor inlet port for introducing a part of the air sucked into the air conditioning case by the operation of the blower into the sensor housing, the concentration of the particulate matter contained in the air at a remote location can be detected with higher accuracy and higher responsiveness.
In addition, the parenthesized reference numerals attached to the respective components and the like indicate an example of correspondence between the components and the like and specific components and the like described in the embodiments described later.
Drawings
Fig. 1 is a diagram schematically showing a vehicle equipped with a vehicular air conditioning device according to a first embodiment.
Fig. 2 is a schematic diagram showing the configuration of the vehicular air conditioning device according to the first embodiment.
Fig. 3 is an external view of a particle detector of the vehicle air conditioner according to the first embodiment.
Fig. 4 is a diagram showing a light emitting portion and a light receiving portion of the particle detection portion.
Fig. 5 is a diagram showing the flow of air when the blower of the vehicle air conditioning device of the first embodiment is operated.
Fig. 6 is a diagram schematically showing the results of the vehicular air conditioning device according to the second embodiment.
Fig. 7 is a diagram showing the flow of air when the blower of the vehicle air conditioning device according to the second embodiment is operated.
Fig. 8 is a flowchart of the vehicular air conditioning device according to the second embodiment.
Fig. 9 is a diagram schematically showing the configuration of a vehicular air conditioning device according to a third embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or corresponding portions are denoted by the same reference numerals in the drawings.
(first embodiment)
A vehicle air conditioner according to a first embodiment will be described with reference to fig. 1 to 5. The air conditioner 10 for a vehicle according to the present embodiment is an air conditioner mounted on the vehicle 1, and is a device for air conditioning a vehicle interior. As shown in fig. 1 to 2, the air conditioner 10 for a vehicle includes: an air conditioning unit 100 and a particle detecting part 200. The vehicle air conditioner 10 is disposed inside the instrument panel 2 of the vehicle 1. The particle detector 200 detects the particle concentration of air in the vicinity of the body of an occupant seated in the seat 3 of the vehicle 1. The value of the particle concentration detected by the particle detection unit 200 is displayed on a display unit disposed in the meter, for example.
First, the structure of the air-conditioning unit 100 will be described. The air conditioning unit 100 performs air conditioning of air taken in from the outside, and supplies the air-conditioned air into the vehicle interior. The air conditioning unit 100 includes: blower housing 101, blower 130, connection 140, and air conditioner 150.
The blower housing 101 is a portion of the vehicle air conditioner 10 into which air from the outside is taken. A blower 130 described later is housed inside the blower housing 101. The blower housing 101 is formed with an inside air inlet 111 and an outside air inlet 112. The interior air inlet 111 is an opening formed as an inlet for air introduced from the vehicle interior. The outdoor air inlet 112 is an opening formed as an inlet for air introduced from the outside of the vehicle. The space outside the vehicle and outside air inlet 112 are connected by a duct, not shown.
The blower housing 101 is provided with an inside/outside air switching door, not shown, between the inside air inlet 111 and the outside air inlet 112. The ratio of the air flowing from the inside air inlet 111 to the air flowing from the outside air inlet 112 is adjusted by the operation of the inside/outside air switching door. Since a known structure can be used as the structure of the inside/outside air switching door, specific illustration and description thereof are omitted.
In the blower housing portion 101, a particulate filter 120 is disposed at a position on the upstream side (upper side in fig. 1) of the blower 130 along the flow direction of the air. The particulate filter 120 is a filter for removing particulates from the air flowing in from the inside air inlet 111 and the outside air inlet 112. The air passes through the particulate filter 120, and the cleaned air with the reduced particulate concentration is blown into the vehicle interior.
The blower 130 is a blower for blowing air into the vehicle interior. The blower 130 corresponds to a blower that sucks air into the inside of the air-conditioning case.
When the blower 130 is driven, air is sucked into the blower housing 101 through the inside air inlet 111 and the outside air inlet 112. This air is blown into the vehicle interior through the connection portion 140 and the air conditioner 150, which will be described later.
The air conditioner 150 is a part that adjusts the temperature of air. Inside the air conditioner 150 are disposed: an evaporator that dehumidifies and cools air, a heater core that heats air, and an air mix door that adjusts the amount of air that flows through the evaporator and the heater core, respectively. Further, blower housing 101, connection portion 140, and air conditioning portion 150 correspond to an air conditioning case forming an air passage through which air blown into the vehicle interior flows.
The air conditioner 150 is provided with a defroster outlet 151, a face outlet 152, and a foot outlet 153, respectively, at a portion downstream in the air flow direction. The defroster blowout part 151 is a portion that blows out the conditioned air toward the window of the vehicle. The face blowout part 152 is a part that blows out the air-conditioned air toward the face of the occupant of the vehicle. The foot blowout part 153 is a part that blows out the air conditioning wind toward the feet of the occupant of the vehicle.
Each of the defroster blowout part 151, the face blowout part 152, and the foot blowout part 153 is provided with a door, not shown, and the flow rate of air blown out from each blowout part is adjusted by the opening degree of the door. Since a known structure can be adopted as the structure of the air conditioner 150 as described above, specific illustration and description thereof are omitted.
As shown in fig. 1, an air introduction chamber 160 is formed in the blower housing 101 at a position near the end to be the particulate filter 120. The air introduction chamber 160 is formed as a space in which air introduced from the outside of the air conditioning unit 100 to the inside of the air conditioning unit 100 (specifically, the inside of the blower housing 101) flows. The air flowing in the air introduction chamber 160 flows while bypassing the particulate filter 120.
An opening 161 serving as an inlet of air in the air introduction chamber 160 is formed at a position above the particulate filter 120 and the particle detector 200 described later. The opening 161 communicates between the space around the air conditioning unit 100 and the air introduction chamber 160. An opening 162 serving as an outlet of air in the air introduction chamber 160 is formed at a position slightly below the particulate filter 120. The opening 162 communicates the air introduction chamber 160 with a space below the particulate filter 120 in the blower housing 101. The opening 162 corresponds to the detection portion air intake port. The positions of the openings 161 and 162 described above are merely examples. The openings 161 and 162 may be formed at different positions from those described above.
The air conditioning control unit 40 will be explained. The air-conditioning control unit 40 shown in fig. 1 is a control device that controls the air-conditioning unit 100. Specifically, the air conditioning control unit 40 is an electronic control device including a storage unit configured by a non-transitory tangible storage medium such as a semiconductor memory and a processor. The air conditioning control unit 40 executes the computer program stored in the storage unit. By executing the computer program, a method corresponding to the computer program is executed.
The air conditioning control unit 40 outputs a control signal to each actuator included in the air conditioning unit 150 to control the operation of each actuator. In brief, the air conditioning control unit 40 performs various air conditioning controls on the air conditioning unit 150. For example, the blower 130, the inside/outside air switching door, the air mix door, the face blowout opening door, the foot blowout opening door, and the defroster blowout opening door (all not shown) are drive-controlled by the air conditioning control unit 40.
As shown in fig. 1, the air conditioning control unit 40 is connected to sensors such as the particle detection unit 200 and actuators such as a door, and also connected to an operation unit 41 and a display unit 42.
The operation unit 41 is an operation unit that is operated by the occupant when adjusting the air volume, temperature, and the like of the conditioned air blown out from the air conditioning unit 150. The operation unit 41 is disposed on, for example, an instrument panel of the vehicle. The operation unit 41 can set, for example, the air volume of the conditioned air, the target room temperature in the vehicle interior, the air outlet of the conditioned air, and the like. In addition, the operation unit 41 can set an automatic mode for automatically adjusting the air volume of the air-conditioned air, adjusting the temperature of the air-conditioned air, and selecting the inside air circulation or the outside air introduction. The operation unit 41 outputs information indicating the settings, that is, operation information indicating the operation of the occupant on the operation device 44 to the air conditioning control unit 40. Further, the air conditioning control unit 40 performs the following processing: the concentration of particles in the air in the vehicle interior is calculated based on the output signal of the particle detection unit 200, and the calculated concentration of particles is displayed on, for example, the display unit 42 disposed in the instrument.
When the blower 130 is driven, air in the air introduction chamber 160 is discharged to the blower 130 side through the opening 162 by the suction force of the blower 130. To replenish this air, external air flows into the air introduction chamber 160 through the opening 161. Therefore, in the air introduction chamber 160 in the present embodiment, air flows downward from a position (opening 161) above the first opening 231.
The blower housing 101 is disposed inside the instrument panel in the vehicle. The space inside the instrument panel, i.e., the space outside the air introduction chamber 160 is connected to the vehicle interior. Therefore, the air flowing into the air introduction chamber 160 from the opening 161 becomes air in the vehicle interior.
As shown in fig. 1, a portion of the air conditioning unit 100 where the air introduction chamber 160 is formed is a portion where the particle detection part 200 is mounted. The particle detection unit 200 is attached to the blower housing 101 from the outside so as to form a lateral portion of the air introduction chamber 160. The upper end of the particle detector 200 is located lower than the opening 161.
The particle detector 200 is a sensor unit for measuring the concentration of particles in the air. As shown in fig. 4, the particle detection unit 200 includes: a light emitting section 210 having a light emitting element 211 and a light receiving section 220 having a light receiving element 221.
A part of the light emitted from the light emitting section 210 is scattered by the particles in the air introduced into the particle detection section 200, and a part of the light is detected by the light receiving section 220. The particle detection unit 200 is configured to: the presence or absence and concentration of particles in the air are detected based on the light amount of the light detected by the light receiving unit 220.
As shown in fig. 3, the particle detection section 200 has a sensor housing 230. The sensor case 230 is a container that accommodates the light emitting unit 210, the light receiving unit 220, the sensor blower 240, and the like, and is formed in a substantially rectangular parallelepiped shape. A first opening 231 and a second opening 232 are formed in the sensor housing 230 on the surface where the air introduction chamber 160 is formed, respectively.
The first opening 231 is an opening formed to allow air from the air introduction chamber 160 to flow therein. As described above, the second opening 232 is an opening formed for discharging air to the air introduction chamber 160. The second opening 232 in the present embodiment is formed at a position above the first opening 231.
As shown in fig. 5, the particle detector 200 includes a sensor blower 240 for adjusting the flow rate of air introduced into the sensor case 230. The light emitting portion 210, the light receiving portion 220, and the sensor blower 240 are disposed inside the sensor housing 230.
The sensor blower 240 operates in response to an instruction from the air conditioning control unit 40 described later. The sensor blower 240 sucks the air flowing in the air introduction chamber 160 into the interior of the sensor housing 230 from the first opening 231. The maximum suction capacity of the sensor blower 240 is less than the maximum suction capacity of the blower 130.
The particle detector 200 measures the concentration of particles in the air flowing into the sensor case 230 through the first opening 231. This air is, as already described, the air in the vehicle cabin. The air sucked into the sensor housing 230 is discharged from the second opening 232 to the air introduction chamber 160.
In addition, if the suction capacity of the sensor blower 240 is increased, air near the body of the occupant of the vehicle can be quickly sucked into the sensor case 230. However, when the suction capacity of the sensor blower 240 is increased, turbulence occurs as the flow velocity increases, and the concentration of particles cannot be detected with high accuracy.
Therefore, the vehicle air conditioner 10 of the present embodiment includes a sensor inlet port that introduces a part of the air sucked into the blower housing 101 into the sensor case 230 by the operation of the blower 130 having a large suction capacity. The sensor introduction port corresponds to the first opening 231.
Here, the operation of the inside/outside air switching door is the inside air introduced into the vehicle interior from the inside air inlet 111 to the blower housing 101. As shown in fig. 5, when the blower 130 starts to operate, the interior air is drawn into the blower 130 from the interior air inlet 111 through the particulate filter 120 and the blower housing 101.
At this time, a part of the air sucked into the blower housing 101 flows into the air introduction chamber 160. A part of the air flowing into the air introduction chamber 160 is introduced into the sensor housing 230 through the first opening 231. The particle detector 200 measures the concentration of particles in the air flowing into the sensor case 230 through the first opening 231.
Therefore, the concentration of particles contained in the air at a distance near the body of the occupant seated in the seat can be detected with high accuracy and high responsiveness without increasing the suction capacity of the sensor blower 240.
Further, the air sucked into the sensor housing 230 is discharged from the second opening 232 to the air introduction chamber 160, and is sucked into the blower 130.
The vehicle air conditioner 10 of the present embodiment also introduces air from the air introduction chamber 160 into the sensor case 230 by the operation of the sensor blower 240. That is, in the vehicle air conditioner 10 of the present embodiment, in addition to the operation of the blower 130, the sensor blower 240 is operated to introduce air from the air introduction chamber 160 into the sensor case 230. Therefore, the concentration of the particles can be detected with high accuracy and high responsiveness without generating turbulence.
Even if the interior air is introduced into the vehicle interior from the interior air inlet 111 into the blower housing 101 by the operation of the interior/exterior air switching door, a large amount of exterior air enters the vehicle interior from a gap or the like provided in a firewall of the vehicle when the vehicle is traveling at a high speed.
Therefore, the air conditioning control unit 40 of the present embodiment controls the blower 130 such that the flow rate of the air sucked into the blower housing 101 increases as the vehicle travels faster. This facilitates the introduction of air near the body of the occupant into the sensor case 230, and therefore, the concentration of particles in the air near the body of the occupant can be detected with high accuracy.
In addition, the suction capacity of the blower 130 differs according to the model number. Therefore, in the vehicle having a small suction capacity of blower 130, air conditioning control unit 40 of the present embodiment controls sensor blower 240 such that the flow rate of air introduced into sensor case 230 is larger than that of the vehicle having a large suction capacity of blower 130.
In addition, when the seat 3 of the vehicle 1 is positioned in front of the vehicle, the air flow flowing toward the vehicle air conditioner 10 is easily blocked by the body of the occupant. Therefore, when it is determined that the position of the seat 3 of the vehicle 1 is located more forward in the vehicle than the predetermined position based on the signal indicating the position of the seat 3, the air conditioning control unit 40 of the present embodiment controls the blower 130 so that the flow rate of the air sucked into the blower housing 101 is larger.
The flow of air in the vehicle interior differs depending on modes such as a face mode in which air is blown from the face blowout part 152, and a foot mode in which air is blown mainly from the foot blowout part 153. Therefore, the air conditioning control unit 40 of the present embodiment controls the sensor blower 240 so that the flow rate of the air introduced into the sensor case 230 becomes an appropriate amount according to the mode.
The flow of air in the vehicle interior differs depending on whether or not the door of the closed face blowout part 152 closes the face blowout part 152. Therefore, the air conditioning control unit 40 of the present embodiment controls the sensor blower 240 so that the flow rate of the air introduced into the sensor casing 230 becomes an appropriate amount in accordance with a signal indicating whether or not the door that closes the face blowout part 152.
In the air conditioning device for a vehicle of the left-right independent temperature control type in which the air flow path of the air conditioning casing is divided into left and right sides and the temperatures of the blown air blown out from the right air flow path and the left air flow path are independently controlled, the air volumes of the air blown out from the right air flow path and the left air flow path are different from each other. Therefore, the air conditioning control unit 40 of the present embodiment controls the sensor blower 240 so that the flow rate of the air introduced into the sensor case 230 is appropriate in accordance with the amounts of the blown air blown out from the right air flow path and the left air flow path, respectively.
In addition, in a vehicle that performs air conditioning by blowing air-conditioned air from a seat air conditioning device provided in a seat toward the body of a passenger seated in the seat, convection of air in the vehicle interior is likely to occur. Therefore, the air conditioning control unit 40 of the present embodiment controls the sensor blower 240 such that the flow rate of the air introduced into the sensor case 230 is larger when the seat air conditioner is not operated than when the seat air conditioner is operated.
In addition, in a vehicle that performs air conditioning by blowing cold air from a rear air conditioner disposed in a rear seat of the vehicle toward the body of a passenger in the rear seat, convection of air in the vehicle interior is likely to occur. Therefore, the air conditioning control unit 40 of the present embodiment controls the sensor blower 240 so that the flow rate of the air introduced into the sensor case 230 becomes larger when the rear air conditioner is not operated than when the seat air conditioner is operated.
As described above, the air conditioning device for a vehicle includes the air conditioning cases 101, 140, and 150, and the air conditioning cases 101, 140, and 150 form an air passage through which air blown into the vehicle interior flows. The vehicle air conditioner further includes blower 130, and blower 130 is disposed inside air- conditioning cases 101, 140, and 150 and sucks air into air- conditioning cases 101, 140, and 150.
Further, the air cleaner is provided with a particle detection unit 200, and the particle detection unit 200 detects the particle concentration of the particulate matter contained in the air. Further, the particle detector 200 includes: a light emitting portion 210 that irradiates light to the air, a light receiving portion 220 that receives scattered light that is scattered when the light irradiated by the light emitting portion 210 hits a particulate material, and a sensor case 230 that houses the light emitting portion 210 and the light receiving portion 220.
Further, a first opening 231 is formed in the sensor case 230 as a sensor introduction port for introducing a part of the air sucked into the air- conditioning cases 101, 140, and 150 by the operation of the blower 130 into the sensor case 230.
According to such a configuration, the sensor case 230 is provided with the first opening 231 as a sensor introduction port for introducing a part of the air sucked into the air- conditioning cases 101, 140, and 150 by the operation of the blower 130 into the sensor case 230. Therefore, the concentration of the particulate matter contained in the air at a remote place can be detected with high accuracy and high responsiveness.
Further, the particle detector 200 includes a sensor blower 240, and the sensor blower 240 sucks a part of the air sucked into the air- conditioning cases 101, 140, and 150 into the sensor case 230 through a first opening 231 as a sensor introduction port.
Therefore, by the suction of sensor blower 240, a part of the air sucked into air- conditioning cases 101, 140, and 150 can be further guided into sensor case 230.
Further, the sensor blower 240 is disposed inside the sensor case 230. As described above, a part of the air sucked into the air- conditioning cases 101, 140, and 150 can be introduced into the sensor case 230 by the sensor blower 240 disposed inside the sensor case 230.
Further, an air introduction chamber 160 is formed in a portion of the air- conditioning cases 101, 140, and 150 where the sensor case 230 is attached, and the air introduction chamber 160 is a space through which air introduced from the outside of the air- conditioning cases 101, 140, and 150 into the air- conditioning cases 101, 140, and 150 flows. The sensor blower 240 sucks a part of the air flowing through the air introduction chamber 160 into the sensor case 230.
In this manner, the sensor blower 240 can be provided to suck a part of the air flowing through the air introduction chamber 160 into the sensor case 230.
(second embodiment)
A vehicle air conditioner according to a second embodiment will be described with reference to fig. 6 to 8. The air conditioning device 10 for a vehicle according to the first embodiment forms the air introduction chamber 160 at a position near the end of the particulate filter 120 in the blower housing 101, and introduces a part of the air flowing through the air introduction chamber 160 into the sensor case 230 of the particulate detecting unit 200.
In contrast, in the vehicle air conditioner 10 of the present embodiment, the air introduction chamber 160 is not formed in the blower housing 101, and in the particle detection unit 200, a part of the air introduced into the indoor air inlet 111 is introduced into the sensor case 230 of the particle detection unit 200.
As shown in fig. 7, the particle detector 200 includes a sensor blower 240, and the sensor blower 240 adjusts the flow rate of air introduced into the sensor housing 230. The sensor blower 240 is disposed inside the sensor housing 230. Although not shown in fig. 7, the light emitting section 210 and the light receiving section 220 are also disposed inside the sensor housing 230.
The sensor blower 240 operates in response to an instruction from the air conditioning control unit 40 described later. The sensor blower 240 sucks a portion of the inside air introduced into the inside air inlet 111 from the first opening 231 into the inside of the sensor housing 230. The maximum suction capacity of the sensor blower 240 is less than the maximum suction capacity of the blower 130.
The particle detector 200 measures the concentration of particles in the air flowing into the sensor case 230 through the first opening 231. This air is, as already described, the air in the vehicle cabin. The air drawn into the sensor housing 230 is discharged from the second opening 232 to the outside of the sensor housing 230.
The air conditioning control unit 40 of the present embodiment performs the following processing: the air volume of the sensor blower 240 is adjusted according to the air volume of the blower 130. Fig. 8 shows a flowchart of this process. The air conditioning control unit 40 periodically performs the processing shown in fig. 8.
First, in S100, the air conditioning control unit 40 determines whether or not the airflow rate of the blower 130 is equal to or greater than a threshold value. Specifically, the airflow rate of the blower 130 is estimated based on the voltage supplied to the blower 130, and it is determined whether or not the airflow rate is equal to or greater than a threshold value.
If it is determined that the airflow rate of blower 130 is equal to or greater than the threshold value, air-conditioning control unit 40 decreases the airflow rate of sensor blower 240 in S102. This prevents excessive air from being introduced into the sensor case 230.
If it is determined that the airflow rate of blower 130 is smaller than the threshold value, air-conditioning control unit 40 increases the airflow rate of sensor blower 240 in S104. This allows a suitable amount of air to be introduced into the sensor case 230.
In the present embodiment, the same effects as those of the first embodiment can be obtained by the configuration common to the first embodiment.
The air volume determination unit corresponding to step S100 determines whether or not the air volume of the blower is equal to or greater than a threshold value. When the air volume determination unit determines that the air volume of the blower is equal to or greater than the threshold value, the air volume adjustment unit corresponding to steps S102 and S104 reduces the intake air volume of the sensor blower. In addition, the air volume adjusting part increases the intake air volume of the sensor blower when the air volume determining part determines that the air volume of the blower is smaller than the threshold value.
In this way, the intake air volume of the sensor blower can be reduced when the air volume determination unit determines that the air volume blown by the blower is equal to or greater than the threshold value, and the intake air volume of the sensor blower can be increased when the air volume determination unit determines that the air volume blown by the blower is less than the threshold value.
(third embodiment)
A vehicular air conditioning device according to a third embodiment will be described with reference to fig. 9. In the air conditioning device 10 for a vehicle according to the present embodiment, the air intake port 170 for a detection unit is formed in the blower housing 101 at a position near the end of the particulate filter 120, and the air intake port 170 for a detection unit takes in air from the outside of the blower housing 101 to the inside of the blower housing 101. A part of the air flowing through the detection unit air intake port 170 is introduced into the sensor case 230 of the particle detection unit 200.
The vehicle air conditioner 10 according to the present embodiment includes an open/close door 250 that adjusts the opening degree of the detection unit air intake port 170. The opening/closing door 250 corresponds to a door member.
Air conditioning control unit 40 can adjust the flow rate of air introduced into sensor case 230 by sensor blower 240, and can adjust the flow rate of air introduced from the outside of blower housing 101 into the inside of blower housing 101 by opening and closing door 25.
When the door member 250 opens the detection-unit air intake port 170, the air that does not pass through the particulate filter 120 passes through the detection-unit air intake port 170 and is introduced into the air conditioner 150. However, since the first opening 231 is closed by the door member 250, the air that does not pass through the particulate filter 120 can be introduced into the air conditioner 150 through the air intake port 170 for the detection portion.
In the present embodiment, the same effects as those of the first embodiment can be obtained by the configuration common to the first embodiment.
Further, a detection unit air intake port 170 is formed in a portion of the air- conditioning cases 101, 140, and 150 to which the sensor case 230 is attached, and the detection unit air intake port 170 takes in air from the outside of the air- conditioning cases 101, 140, and 150 to the inside of the air- conditioning cases 101, 140, and 150. The vehicle air conditioner 10 further includes a door member 250 that adjusts the opening degree of the detection unit air intake port 170.
As described above, since the door member 250 for adjusting the opening degree of the air intake port 170 for the detection portion is provided, the air that has passed through the air intake port 170 for the detection portion can be prevented from being introduced into the blower housing 101.
(other embodiments)
(1) In each of the above embodiments, the sensor blower 240 is disposed inside the sensor case 230, but the sensor blower 240 may be disposed outside the sensor case 230. For example, sensor blower 240 may be disposed in air introduction chamber 160, and air may be drawn into air introduction chamber 160 from the outside of the air conditioning case.
(2) The vehicle air conditioner of the third embodiment includes the opening/closing door 250 that adjusts the opening degree of the detection unit air intake port 170, but for example, the vehicle air conditioner of the first embodiment may include an opening/closing door that adjusts the opening degree of the opening 162.
The present invention is not limited to the above-described embodiments, and can be modified as appropriate. The above embodiments are not independent of each other, and can be combined as appropriate except when the combination is obviously impossible. In the above embodiments, it is obvious that the elements constituting the embodiments are not essential except for the case where they are specifically and clearly indicated to be essential and the case where they are clearly considered to be essential in principle. In the above embodiments, when numerical values such as the number, numerical value, amount, and range of the constituent elements of the embodiments are mentioned, the number is not limited to a specific number unless otherwise explicitly stated or clearly limited to a specific number in principle. In the above embodiments, when referring to the material, shape, positional relationship, and the like of the constituent elements and the like, the material, shape, positional relationship, and the like are not limited to those unless specifically indicated or limited to a specific material, shape, positional relationship, and the like in principle.
(conclusion)
According to a first aspect shown in part or all of the embodiments described above, an air conditioning device for a vehicle includes: an air conditioning case forming an air passage through which air blown into a vehicle compartment flows; and a blower disposed inside the air conditioning case and configured to draw air into the air conditioning case. The air conditioner further includes a particle detection unit that detects a particle concentration of the particulate matter contained in the air. Further, the particle detection unit includes: a light emitting section that irradiates air with light; a light receiving unit that receives scattered light scattered by light emitted from the light emitting unit hitting the particulate material; and a sensor housing that houses the light emitting section and the light receiving section. A sensor inlet port for introducing a part of the air sucked into the air conditioning case by the operation of the blower into the sensor case is formed in the sensor case.
In addition, according to the second aspect, the particle detection section has the sensor blower that sucks a part of the air sucked into the inside of the air-conditioning case into the inside of the sensor case through the sensor introduction port.
Therefore, by the suction of the sensor blower, a part of the air sucked into the air-conditioning case can be further introduced into the sensor case.
In addition, according to a third aspect, the sensor blower is disposed inside the sensor housing. In this manner, a part of the air sucked into the air-conditioning case can be introduced into the sensor case by the sensor blower disposed inside the sensor case.
In addition, according to a fourth aspect, an air introduction chamber, which is a space in which air introduced into the inside of the air-conditioning case from the outside of the air-conditioning case flows, is formed in a portion of the air-conditioning case where the sensor case is mounted. The sensor blower sucks a part of the air flowing through the air introduction chamber into the sensor housing.
In this manner, the sensor blower can be provided to suck a part of the air flowing through the air introduction chamber into the sensor housing.
In addition, according to a fifth aspect, the vehicle air conditioner includes an air volume determination unit that determines whether or not the air volume of the blower is equal to or greater than a threshold value. The air volume control unit is configured to decrease the intake air volume of the sensor blower when the air volume determination unit determines that the air volume of the blower is equal to or greater than the threshold value, and to increase the intake air volume of the sensor blower when the air volume determination unit determines that the air volume of the blower is less than the threshold value.
In this way, the intake air volume of the sensor blower can be reduced when the air volume determination unit determines that the air volume blown by the blower is equal to or greater than the threshold value, and the intake air volume of the sensor blower can be increased when the air volume determination unit determines that the air volume blown by the blower is less than the threshold value.
In addition, according to a sixth aspect, a detection portion air intake port that takes in air from the outside of the air conditioning casing to the inside of the air conditioning casing is formed in a portion of the air conditioning casing to which the sensor casing is attached. The vehicle air conditioner further includes a door member that adjusts the opening degree of the air intake port for the detection unit.
In this way, by providing the door member that adjusts the opening degree of the air intake port for the detection portion, air can be introduced into the blower housing portion without passing through the air intake port for the detection portion.
The first opening 231 corresponds to the sensor inlet, the detection section air inlet 170 and the opening 162 correspond to the detection section air inlet, the processing of S100 corresponds to the air volume determination section, and the processing of S102 and S104 corresponds to the air volume adjustment section.
Claims (6)
1. An air conditioning device for a vehicle, comprising:
an air conditioning case (101, 140, 150) that forms an air passage through which air blown into a vehicle interior flows;
a blower (130) which is disposed inside the air conditioning casing and sucks the air into the air conditioning casing; and
a particle detection unit (200) that detects the particle concentration of the particulate matter contained in the air,
the particle detection unit includes:
a light emitting unit (210) that irradiates the air with light;
a light receiving unit (220) that receives scattered light scattered by the light emitted from the light emitting unit hitting the particulate material; and
a sensor housing (230) that houses the light emitting section and the light receiving section,
a sensor introduction port (231) is formed in the sensor housing, and introduces a part of the air sucked into the air conditioning housing by the operation of the blower into the sensor housing.
2. An air conditioning device for a vehicle according to claim 1,
the particle detection unit has a sensor blower (240) that sucks a part of the air sucked into the air conditioning casing into the sensor casing through the sensor inlet.
3. An air conditioning device for a vehicle according to claim 2,
the sensor blower is disposed inside the sensor housing.
4. An air conditioning device for a vehicle according to claim 2 or 3,
an air introduction chamber (160) is formed in a portion of the air-conditioning case where the sensor case is mounted, the air introduction chamber being a space in which the air introduced from the outside of the air-conditioning case into the inside of the air-conditioning case flows,
the sensor blower sucks a part of the air flowing in the air introduction chamber into the inside of the sensor housing.
5. An air conditioning device for a vehicle according to any one of claims 2 to 4, characterized by comprising:
an air volume determination unit (S100) that determines whether or not the air volume of the blower is greater than or equal to a threshold value; and
and an air volume adjusting unit (S102, S104) that reduces the intake air volume of the sensor blower when the air volume determining unit determines that the air volume of the blower is equal to or greater than a threshold value, and increases the intake air volume of the sensor blower when the air volume determining unit determines that the air volume of the blower is less than the threshold value.
6. An air conditioning device for a vehicle according to any one of claims 1 to 5,
a detection unit air intake port (170, 162) that takes in the air from the outside of the air conditioning case to the inside of the air conditioning case is formed in a portion of the air conditioning case where the sensor case is attached,
the vehicle air conditioner is provided with a door member (250) for adjusting the opening degree of the air intake port for the detection portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018238528A JP7234619B2 (en) | 2018-12-20 | 2018-12-20 | vehicle air conditioner |
| JP2018-238528 | 2018-12-20 | ||
| PCT/JP2019/045666 WO2020129534A1 (en) | 2018-12-20 | 2019-11-21 | Vehicle air-conditioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113242807A true CN113242807A (en) | 2021-08-10 |
| CN113242807B CN113242807B (en) | 2024-02-27 |
Family
ID=71102131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980083435.8A Active CN113242807B (en) | 2018-12-20 | 2019-11-21 | Air conditioner for vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7234619B2 (en) |
| CN (1) | CN113242807B (en) |
| WO (1) | WO2020129534A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204358868U (en) * | 2014-12-18 | 2015-05-27 | 南京协众汽车空调集团有限公司 | Based on the vehicle environment protection air-conditioning system of PM2.5 monitoring |
| JP5977466B1 (en) * | 2016-01-08 | 2016-08-24 | 株式会社Ｃｍｃ | Apparatus for functioning as air cleaner and electric fan, and control method therefor |
| WO2017082074A1 (en) * | 2015-11-12 | 2017-05-18 | 株式会社デンソー | Air conditioning device for vehicle |
| CN106813712A (en) * | 2015-12-02 | 2017-06-09 | 现代自动车株式会社 | For internal temperature and the device of fine dust in measuring vehicle simultaneously |
| JP2017116147A (en) * | 2015-12-22 | 2017-06-29 | パナソニックＩｐマネジメント株式会社 | Air cleaner |
| CN107531125A (en) * | 2015-04-24 | 2018-01-02 | 株式会社电装 | Air conditioner for vehicles |
| WO2018100921A1 (en) * | 2016-12-02 | 2018-06-07 | 株式会社デンソー | Vehicular air conditioning device |
| WO2018116683A1 (en) * | 2016-12-19 | 2018-06-28 | 株式会社デンソー | Air-conditioning device for vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018141679A (en) | 2017-02-27 | 2018-09-13 | パナソニックＩｐマネジメント株式会社 | Dust sensor |
-
2018
- 2018-12-20 JP JP2018238528A patent/JP7234619B2/en active Active
-
2019
- 2019-11-21 CN CN201980083435.8A patent/CN113242807B/en active Active
- 2019-11-21 WO PCT/JP2019/045666 patent/WO2020129534A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204358868U (en) * | 2014-12-18 | 2015-05-27 | 南京协众汽车空调集团有限公司 | Based on the vehicle environment protection air-conditioning system of PM2.5 monitoring |
| CN107531125A (en) * | 2015-04-24 | 2018-01-02 | 株式会社电装 | Air conditioner for vehicles |
| WO2017082074A1 (en) * | 2015-11-12 | 2017-05-18 | 株式会社デンソー | Air conditioning device for vehicle |
| CN106813712A (en) * | 2015-12-02 | 2017-06-09 | 现代自动车株式会社 | For internal temperature and the device of fine dust in measuring vehicle simultaneously |
| JP2017116147A (en) * | 2015-12-22 | 2017-06-29 | パナソニックＩｐマネジメント株式会社 | Air cleaner |
| JP5977466B1 (en) * | 2016-01-08 | 2016-08-24 | 株式会社Ｃｍｃ | Apparatus for functioning as air cleaner and electric fan, and control method therefor |
| WO2018100921A1 (en) * | 2016-12-02 | 2018-06-07 | 株式会社デンソー | Vehicular air conditioning device |
| WO2018116683A1 (en) * | 2016-12-19 | 2018-06-28 | 株式会社デンソー | Air-conditioning device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020129534A1 (en) | 2020-06-25 |
| CN113242807B (en) | 2024-02-27 |
| JP7234619B2 (en) | 2023-03-08 |
| JP2020100209A (en) | 2020-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4675229B2 (en) | Air conditioning system for vehicles | |
| CN110573861B (en) | Dust concentration detection device | |
| EP3104092B1 (en) | Indoor unit for air conditioner | |
| US10131200B2 (en) | Vehicular climate sensor in recirculation path | |
| CN105307881A (en) | Method for controlling a ventilation/air-conditioning system of a vehicle, and vehicle having such a ventilation/air-conditioning system | |
| EP3486100B1 (en) | Dust measuring system for vehicles and air-conditioning apparatus for vehicles | |
| CN113498386B (en) | Particle concentration detection device | |
| CN113242807B (en) | Air conditioner for vehicle | |
| CN110650857B (en) | Air conditioner | |
| CN110785305B (en) | Air conditioner for vehicle | |
| KR101554255B1 (en) | Air conditioner for automotive vehicles | |
| WO2020090503A1 (en) | Pm sensor | |
| JP2020118453A (en) | PM sensor | |
| CN110997372B (en) | Vehicle notification device | |
| CN111032389B (en) | Air conditioner for vehicle | |
| WO2019039149A1 (en) | Air-conditioning control device | |
| WO2022176727A1 (en) | Vehicular air conditioning device | |
| JP2023122176A (en) | Air conditioner for vehicle | |
| JP2020100209A5 (en) | ||
| JP2021146866A (en) | Vehicular air conditioner | |
| WO2019039137A1 (en) | Vehicle air conditioning apparatus | |
| JP2010111170A (en) | Vehicular air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |