WO2022176727A1 - Dispositif de climatisation de véhicule - Google Patents

Dispositif de climatisation de véhicule Download PDF

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Publication number
WO2022176727A1
WO2022176727A1 PCT/JP2022/005033 JP2022005033W WO2022176727A1 WO 2022176727 A1 WO2022176727 A1 WO 2022176727A1 JP 2022005033 W JP2022005033 W JP 2022005033W WO 2022176727 A1 WO2022176727 A1 WO 2022176727A1
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WO
WIPO (PCT)
Prior art keywords
air
opening
particle sensor
space
outflow hole
Prior art date
Application number
PCT/JP2022/005033
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English (en)
Japanese (ja)
Inventor
秀樹 長野
Original Assignee
株式会社ヴァレオジャパン
Priority date (The priority date 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 date listed.)
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Application filed by 株式会社ヴァレオジャパン filed Critical 株式会社ヴァレオジャパン
Priority to CN202280005349.7A priority Critical patent/CN115836206A/zh
Priority to JP2023500769A priority patent/JPWO2022176727A1/ja
Publication of WO2022176727A1 publication Critical patent/WO2022176727A1/fr

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    • 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
    • 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

Definitions

  • the present disclosure relates to a vehicle air conditioner, and more particularly to a vehicle air conditioner with a particle sensor.
  • a vehicle air conditioner equipped with a particle sensor is known (see Patent Document 1, for example).
  • the intake box is provided with a particle sensor upstream of the blower.
  • the particle sensor is provided so as to open to the air introduction chamber into which the air in the passenger compartment is taken, takes in a part of the air passing through the air introduction chamber, and utilizes the air to measure the particle concentration. . Therefore, the particle sensor attached to the air conditioner disclosed in Patent Literature 1 can measure the particle concentration of the air in the passenger compartment. Therefore, it can be determined whether the air flowing in the vehicle interior is clean.
  • the filter may be installed upstream of the blower. Therefore, it is preferable to provide a particle sensor downstream of the blower.
  • the value detected by the particle sensor is influenced by the environment such as the volume or speed of the air blown out from the blower.
  • the environment such as the volume or speed of the air blown out from the blower.
  • the particle sensor may not be able to detect normally due to many particles flowing through the sensor, and the particle concentration may be detected lower than when the air volume or wind speed is small.
  • the present disclosure is provided with a particle sensor that can accurately measure the particle concentration by supplying stable air to the particle sensor without being affected by the air volume or wind speed of the air blown from the blower.
  • An object of the present invention is to provide a vehicle air conditioner.
  • a vehicle air conditioner includes a case having a duct wall that defines an air passage through which air flows inside; a blower that blows the air into the air passage; A vehicle air conditioner comprising an air filter through which air flows and a particle sensor, wherein the particle sensor is attached to the outside of the duct wall on the downstream side of the blower and the downstream side of the air filter.
  • the duct wall has a tubular first rib projecting from the outside of the duct wall toward the particle sensor and an air outflow hole through which the air to be detected flows out from the air passage
  • the particle sensor has a housing and an air intake port provided in the housing for taking in the air flowing out from the air outflow hole
  • the vehicle air conditioner includes an outer side of the duct wall and the first An airflow buffering space surrounded by ribs and an outer wall surface of the housing, wherein the air outflow hole and the air intake port are connected to the airflow buffering space, and the center of the air outflow hole and a normal line passing through the center of the air intake are deviated from each other.
  • the distance between the normal line passing through the center of the air outflow hole and the normal line passing through the center of the air intake is equal to the distance between the radius of the air outflow hole and the distance between the air intake opening. Preferably larger than the sum of the radii. Since the air that flows out from the air outflow hole does not flow directly into the air intake port, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately. can be measured.
  • the vehicle air conditioner according to the present invention further includes an evaporator arranged in the air passage to cool the air, and the particle sensor is positioned downstream of the blower and upstream of the evaporator. It is preferably arranged outside the wall. Space can be easily secured on the downstream side of the blower and the upstream side of the evaporator, and the particle sensor can be arranged relatively easily. Also, by arranging the particle sensor outside the duct wall, it is possible to prevent an increase in ventilation resistance.
  • the duct wall may have an evaporator-facing wall facing an intake surface of the evaporator, and the particle sensor may be arranged outside the evaporator-facing wall.
  • the particle sensor may be arranged outside the evaporator-facing wall.
  • actuators and links for driving the air ventilation door of the air conditioner, piping for supplying the heat medium to the evaporator and the heat exchanger for heating, etc. are rarely arranged. can be arranged relatively easily.
  • a vehicle air conditioner has a register that adjusts the amount of electric power input to the blower
  • the duct wall has a blower outlet duct portion that connects the blower and the evaporator
  • the register is arranged in the blower duct portion
  • the particle sensor is preferably arranged in a portion adjacent to the mounting position of the register on the outside of the blower blowout duct portion.
  • the vehicle air conditioner according to the present invention has a first opening provided in a wall of the first rib on the side in which the air flowing out from the air outflow hole is directed toward the air intake port.
  • part of the air flowing out of the air outflow hole is discharged out of the airflow buffering space through the first opening. Since the amount of air flowing into the air intake is reduced, it is possible to prevent a large amount of air from flowing into the particle sensor. Also, it is possible to suppress an increase in the pressure in the airflow buffering space due to the air entering the airflow buffering space through the air outflow holes. As a result, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • the second rib provided on the wall of the first rib on the side opposite to the direction in which the air flowing out from the air outflow hole travels toward the air intake port. It is preferable that a part of the air flowing out of the air outflow hole having an opening is discharged out of the airflow buffering space through the second opening. Since the amount of air flowing into the air intake is reduced, it is possible to prevent a large amount of air from flowing into the particle sensor. Also, it is possible to suppress an increase in the pressure in the airflow buffering space due to the air entering the airflow buffering space through the air outflow holes. As a result, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • the case protrudes from the outside of the duct wall toward the particle sensor, and divides the air flow buffer space into the first space including the air outflow hole and the air intake.
  • the vehicle air conditioner has a second rib that partitions into a second space including an inlet, the vehicle air conditioner has a third opening provided in the second rib, and the third opening corresponds to the first space. and the second space are preferably communicated with each other. Since part of the air flowing out from the air outflow hole is blocked by the second rib, it is possible to prevent a large amount of air from flowing into the particle sensor. As a result, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • the case protrudes from the outside of the duct wall toward the particle sensor, and divides the air flow buffer space into the first space including the air outflow hole and the air intake.
  • the vehicle air conditioner has a second rib that partitions into a second space that includes an inlet, and the air that flows out from the air outlet hole in the wall of the first rib flows toward the air intake.
  • the third opening communicates the first space and the second space, and the area of the air outflow hole is a0, the area of the first opening is a1, and the second When the area of the opening is a2 and the area of the third opening is a3, it is preferable to satisfy the relationship a3 ⁇ a0 ⁇ a1 ⁇ a2. By making a3 smaller than a0, more air can be blocked by the second ribs, so that more air can be prevented from flowing into the particle sensor.
  • the amount of air discharged from the first opening or the second opening to the outside of the airflow buffering space is increased. can be less.
  • stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • a particle sensor that can accurately measure the particle concentration by supplying stable air to the particle sensor without being affected by the air volume or velocity of the air blown from the blower. It is possible to provide a vehicle air conditioner equipped with the above.
  • FIG. 1 is a schematic longitudinal sectional view of a vehicle air conditioner according to an embodiment
  • FIG. It is an example of the schematic cross-sectional view of the vehicle air conditioner shown in FIG. It is the first example of the partial enlarged view near a particle sensor. It is the second example of the partial enlarged view near the particle sensor. It is the third example of the partial enlarged view near a particle sensor. It is the fourth example of the partial enlarged view near the particle sensor. It is the fifth example of the partial enlarged view near the particle sensor. It is the sixth example of the partial enlarged view near the particle sensor.
  • FIG. 11 is a seventh example of a partially enlarged view near the particle sensor; It is the eighth example of the partial enlarged view near the particle sensor. It is another example of the schematic cross-sectional view of the vehicle air conditioner shown in FIG.
  • FIG. 1 is a schematic longitudinal sectional view of a vehicle air conditioner according to this embodiment.
  • FIG. 2 is a schematic cross-sectional view of the vehicle air conditioner shown in FIG.
  • FIG. 3 is a first example of a partial enlarged view of part A of FIG.
  • the vehicle air conditioner 1 according to the present embodiment includes a case 10 having a duct wall 12 defining an air passage 11 through which air flows, and air to the air passage 11.
  • a vehicle air conditioning system comprising a blower 20 for blowing air, an air filter 30 (shown in FIG. 1) arranged in the air passage 11 through which air flows, and a particle sensor 40 (shown in FIG.
  • the sensor 40 is mounted outside the duct wall 12 downstream of the blower 20 and downstream of the air filter 30, as shown in FIG. It has a cylindrical first rib 13 protruding from the outside of the duct wall 12 toward the particle sensor 40 and an air outflow hole 14 through which the air to be detected flows out from the air passage 11.
  • the vehicle air conditioner 1 has a body 41 and an air intake port 42 that is provided in the housing 41 and takes in the air that has flowed out from the air outflow hole 14, and includes the outside of the duct wall 12, the first rib 13, It has an airflow buffering space 50 surrounded by the outer wall surface of the housing 41, and the air outflow hole 14 and the air intake port 42 are connected to the airflow buffering space 50 and pass through the center of the air outflow hole 14. Normal L1 and normal L2 passing through the center of air intake port 42 are offset from each other.
  • the vehicle air conditioner 1 has an intake portion 2, a blower portion 3, a blower blowout duct portion 4, and an air conditioner portion 5, and forms an airflow of a moderate temperature to cool the vehicle. It is a device that blows into the room.
  • the intake portion 2 has an outside air introduction port 2a for introducing air outside the vehicle (outside air) and an inside air introduction port 2b for introducing air inside the vehicle (inside air) into the case 10, and an outside air introduction port inside the case. 2a and an inside/outside air switching door (not shown) for opening and closing the inside air introduction port 2b.
  • the blower section 3 is connected downstream of the intake section 2 and accommodates a blower 20 .
  • the blower outlet duct portion 4 is a portion that connects the blower portion 3 and the air conditioning portion 5 .
  • the air conditioning unit 5 is a part that adjusts the temperature of the air drawn in by the blower 20 and blows it into the passenger compartment. It is preferable that the air conditioning unit 5 accommodates an evaporator 6 .
  • the evaporator 6 is a cooling heat exchanger, and dehumidifies and cools the air as needed.
  • the air-conditioning unit 5 may house an air mix door 7 and a heating heat exchanger 8 .
  • the air mix door 7 adjusts the ratio of the air passing through the heat exchanger 8 for heating and the air bypassing the heat exchanger 8 for heating.
  • the heating heat exchanger 8 heats the air that has passed through the evaporator 6 as necessary to form temperature-controlled air.
  • a defrost opening 61 , a vent opening 62 , and a foot opening 63 are provided at the most downstream portion of the air conditioning section 5 .
  • Each of the openings 61, 62, 63 is connected to an air outlet (not shown) in the passenger compartment either indirectly or directly via a duct (not shown).
  • the case 10 is a housing that forms the outline of the intake section 2, the blower section 3, the blower blowout duct section 4, and the air conditioner section 5 and integrates them.
  • Air passage 11 is the internal space of case 10 .
  • the duct wall 12 is a wall defining the air passage 11 among the walls of the case 10 .
  • the first rib 13 has a tubular shape such as a cylindrical shape or a rectangular tubular shape, and has one end fixed to the outside of the duct wall 12 and the other end to the outside of the housing 41 of the particle sensor 40 . Abutting or fixed.
  • the air outlet hole 14 is an opening provided in a portion of the duct wall 12 surrounded by the first ribs 13 .
  • the blower 20 as shown in FIG. 1, has an impeller 21 and a motor 22, and is a device that blows air into the vehicle interior. When the blower 20 is driven, air is drawn in from the outside air introduction port 2a or the inside air introduction port 2b.
  • the air filter 30 is a filter for removing particles from the air flowing through the air passage 11, as shown in FIG.
  • the type of air filter 30 is not particularly limited.
  • the air filter 30 may be arranged upstream of the blower 20 in the air passage 11 as shown in FIG. 1, or may be arranged downstream of the blower 20 and upstream of the evaporator 6 (not shown).
  • the air filter 30 is arranged on the upstream side of the blower 20 as shown in FIG. preferably.
  • the air filter 30 is preferably arranged immediately before the evaporator 6 so as to traverse the entire air passage 11 .
  • the particle sensor 40 is a measuring instrument that detects and counts particles in the air.
  • the type of particle sensor 40 is not particularly limited, it is, for example, a sensor using a light scattering method as disclosed in Patent Document 2.
  • the particle sensor 40 further comprises an outlet 43 for discharging measured air, as shown in FIG.
  • the housing 41 is a housing that forms an outer shell of the particle sensor 40 and accommodates a light emitting part (not shown), a light receiving part (not shown), and the like of the sensor.
  • the air intake port 42 is an opening provided in the housing 41 and is an opening for taking in air to be detected inside the particle sensor 40 .
  • the particle sensor 40 is provided downstream of the blower 20 and downstream of the air filter 30 (shown in FIG. 1), as shown in FIG. You can check the cleanliness of the air. In addition, when the particle sensor 40 is attached inside the duct wall 12, the ventilation resistance may increase. .
  • the vehicle air conditioner 1 further includes an evaporator 6 arranged in the air passage 11 to cool the air. It is preferably arranged outside the duct wall 12 upstream of the evaporator 6 . Space can be easily secured on the downstream side of the blower 20 and the upstream side of the evaporator 6, and the particle sensor 40 can be arranged relatively easily. Also, by arranging the particle sensor 40 outside the duct wall 12, an increase in ventilation resistance can be prevented.
  • the duct wall 12 has an evaporator-facing wall 12a facing the suction surface 6a of the evaporator 6, and the particle sensor 40 It is preferably arranged outside the facing wall 12a. Outside the evaporator-facing wall 12a, an actuator (not shown) and links (not shown) for driving the air ventilation door of the air conditioner 1, and a heat medium to the evaporator 6 and a heat exchanger for heating (not shown) are provided. It is possible to arrange the particle sensor 40 relatively easily, since piping for supply (not shown) and the like are rarely arranged.
  • the particle sensor 40 is arranged so that the distance between the suction surface 6a of the evaporator 6 and the inner wall surface of the evaporator-facing wall 12a is the center of the suction surface 6a of the evaporator 6 and the evaporator-facing wall facing the suction surface 6a. It is preferably arranged in a portion shorter than the distance from the inner wall surface of 12a. In such a portion, it is easy to secure a space even on the outside of the evaporator-facing wall 12a, so the particle sensor 40 can be arranged relatively easily.
  • FIG. 11 is another example of a schematic cross-sectional view of the vehicle air conditioner shown in FIG.
  • the vehicle air conditioner 1 according to the present embodiment has a register 23 that adjusts the amount of power input to the blower 20, and the duct wall 12 connects the blower 20 and the evaporator 6.
  • the air blower duct portion 4 may be provided, the register 23 may be arranged in the air blower duct portion 4, and the particle sensor 40 may be arranged on the outside of the air blower duct portion 4 adjacent to the mounting position of the register 23. preferable.
  • the air blown from the blower 20 flows through the blower blowing duct portion 4, and since there is a certain amount of space, the register 23 is often arranged.
  • the resistor 23 is electrically connected to the motor 22 of the blower 20 and contains a plurality of resistors having a predetermined resistance value. By selecting which resistors in resistor 23 are energized by a given controller, the rotational speed of fan 20 can be adjusted to the desired speed.
  • the mounting positions of the resistor 23 and the particle sensor 40 are preferably outside the wall 12b of the duct wall 12 forming the blower blowing duct portion 4, which faces the upstream side of the evaporator facing wall 12a.
  • a configuration in which the particle sensor 40 is arranged downstream of the evaporator 6 is, for example, a configuration in which the particle sensor 40 is arranged in a portion adjacent to the mounting position of the aspirator 9 .
  • the aspirator 9 is a device for guiding air in the vehicle interior to a temperature sensor that detects the temperature in the vehicle interior.
  • the mounting position of the aspirator 9 is, for example, outside the portion of the air passage 11 on the downstream side of the evaporator 6 where the heating heat exchanger 8 is provided.
  • the airflow buffering space 50 is a space surrounded by the outside of the duct wall 12, the first rib 13, and the outer wall surface of the housing 41, as shown in FIG.
  • the air outflow hole 14 and the air intake 42 open toward the airflow buffering space 50 .
  • the air intake port 42 is arranged on the upstream side in the air flow direction in the case 10 or on the downstream side in the air flow direction in the case 10 with respect to the air outflow hole 14 . good too.
  • the normal line L1 passing through the center of the air outflow hole 14 and the normal line L2 passing through the center of the air intake port 42 are deviated from each other. As a result, it is possible to prevent part or all of the air flowing out of the air outflow hole 14 from flowing into the air intake port 42 as it is. Part or all of the air flowing out of the air outflow hole 14 collides with the outer wall surface of the housing 41 of the particle sensor 40 . The impinging air changes direction and travels along the outer wall surface of the housing 41 of the particle sensor 40 . At this time, air flows into the air intake port 42 because the air intake port 42 is open in the housing 41 of the particle sensor 40 . In this way, by buffering the wind speed once, the momentum of the air can be reduced. Therefore, even when the air volume or air velocity blown from the blower 20 is large, stable air is supplied to the particle sensor 40, and the particle concentration can be accurately measured.
  • the vehicle air conditioner 1 is preferably greater than the sum of the radius of hole 14 and the radius of air intake 42 . Since the air intake port 42 is provided at a position where the normal line L1 of the air outflow hole 14 does not pass, it is possible to prevent all the air flowing out from the air outflow hole 14 from flowing into the air intake port 42 as it is. can. Therefore, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • the size relationship between the radius of the air outflow hole 14 and the radius of the air intake 42 is not particularly limited. may be greater than the radius of the air intake 42 .
  • FIG. 4 is a second example of a partially enlarged view near the particle sensor. 3 to 10, the vicinity of the particle sensor is, for example, the portion enclosed by A in FIG. 2 or B in FIG. .
  • the air flowing out from the air outflow holes 14 flows toward the air intake port 42 . It is preferable that a part of the air flowing out from the air outlet hole 14 is discharged out of the airflow buffering space 50 through the first opening 51 .
  • the air flowing out from the air outflow hole 14 collides with the outer wall surface of the housing 41 of the particle sensor 40, and after the direction of the air flow is changed, the air intake port of the particle sensor 40 It branches into the air going to 42 and the air going to the first opening 51 .
  • Air directed toward the first opening 51 is discharged out of the airflow buffering space 50 through the first opening 51 . Since the amount of air flowing into the air intake port 42 is thus reduced, it is possible to prevent a large amount of air from flowing into the particle sensor 40 . Also, it is possible to suppress an increase in the pressure in the airflow buffering space 50 due to the air entering the airflow buffering space 50 from the air outflow hole 14 .
  • the diameter of the first opening 51 is larger than the diameter of the air outflow hole 14 .
  • FIG. 5 is a third example of a partially enlarged view near the particle sensor.
  • a second opening 52 is provided in the side wall 13 b , and part of the air flowing out of the air outlet hole 14 is preferably discharged out of the airflow buffering space 50 through the second opening 52 .
  • the air coming out of the air outflow hole 14 collides with the outer wall surface of the housing 41 of the particle sensor 40, and after the direction of the air flow is changed, the air intake port of the particle sensor 40
  • the air is divided into air directed to 42 and air directed to the second opening 52 on the opposite side. Air directed toward the second opening 52 is discharged out of the airflow buffering space 50 through the second opening 52 .
  • the amount of air flowing into the air intake port 42 is thus reduced, it is possible to prevent a large amount of air from flowing into the particle sensor 40 . Also, it is possible to suppress an increase in the pressure in the airflow buffering space 50 due to the air entering the airflow buffering space 50 from the air outflow hole 14 . As a result, stable air can be supplied to the particle sensor 40 without being affected by air volume or wind speed, and the particle concentration can be measured more accurately. Also, if there is a large amount of air flowing toward the second opening 52 , the amount of air flowing into the air intake port 42 can be further reduced, and a large amount of air can be prevented from flowing through the particle sensor 40 . Therefore, it is preferable that the diameter of the second opening 52 is larger than the diameter of the air outflow hole 14 .
  • FIG. 6 is a fourth example of a partially enlarged view near the particle sensor.
  • the vehicle air conditioner 1 has a second rib 15 that divides into a first space 58 that includes the air intake port 42 and a second space 59 that includes the air intake port 42 , and the vehicle air conditioner 1 has a third opening 53 provided in the second rib 15 . It is preferable that the third opening 53 allows the first space 58 and the second space 59 to communicate with each other.
  • the second rib 15 and the third opening 53 are provided, the air coming out of the air outflow hole 14 flows into the first space 58 and collides with the outer wall surface of the housing 41 of the particle sensor 40 to change the direction of the air flow.
  • part of the air passes through the third openings 53 of the second ribs 15 and the rest of the air is blocked by the second ribs 15 .
  • Air passing through the third opening 53 moves to the second space 59 and flows into the air intake port 42 .
  • part of the air flowing out of the air outflow holes 14 is blocked by the second ribs 15 , so that a large amount of air can be prevented from flowing into the particle sensor 40 .
  • stable air can be supplied to the particle sensor 40 without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • the diameter of the third opening 53 is smaller than the diameter of the air outflow hole 14 .
  • FIG. 7 is a fifth example of a partially enlarged view near the particle sensor.
  • the case 10 protrudes from the outside of the duct wall 12 toward the particle sensor 40, and the airflow buffering space 50 is defined as the first space 58 including the air outflow hole 14.
  • the vehicle air conditioner 1 has a second rib 15 that partitions into a second space 59 that includes the air intake port 42 , and the air that flows out from the air outflow hole 14 in the wall of the first rib 13 is discharged from the air intake port 42 .
  • the air is discharged to the outside of the airflow buffering space 50 through the second opening 52, the third opening 53 communicates the first space 58 and the second space 59, and the area of the air outflow hole 14 is a0, the first
  • the area of the opening 51 is a1
  • the area of the second opening 52 is a2
  • the area of the third opening 53 is a3, it is preferable to satisfy the relationship a3 ⁇ a0 ⁇ a1 ⁇ a2.
  • the second rib 15 may be a plate-like partition wall, or may have a tubular shape such as a cylindrical shape or a rectangular tubular shape sharing a part of the outer periphery with the first rib 13 .
  • the air exiting the air outflow hole 14 enters the first space 58, collides with the outer wall surface of the housing 41 of the particle sensor 40, and the air After the direction of the flow is changed, the air is divided into the air directed to the third opening 53 of the second rib 15 and the air directed to the second opening 52 on the opposite side. Air directed toward the second opening 52 is discharged out of the airflow buffering space through the second opening 52 . Part of the air directed to the third opening 53 moves through the third opening 53 to the second space 59 and the rest of the air is blocked by the second ribs 15 .
  • the air that has moved to the second space 59 branches into air heading toward the air intake port 42 of the particle sensor 40 and air heading toward the first opening 51 .
  • Air directed toward the first opening 51 is discharged out of the airflow buffering space 50 through the first opening 51 .
  • the following effects can be obtained by satisfying the relationship a3 ⁇ a0 ⁇ a1 ⁇ a2.
  • a3 smaller than a0 more air can be blocked by the second ribs 15, so that much air can be prevented from flowing into the particle sensor 40.
  • FIG. Further, by making a1 and a2 larger than a0, more air is discharged from the first opening 51 or the second opening 52 to the outside of the airflow buffering space 50, so that it flows into the air intake port 42. You can use less air.
  • FIG. 8 is a sixth example of a partially enlarged view near the particle sensor.
  • the vehicle air conditioner 1 according to the present embodiment has a first opening 51 and a second opening 52, as shown in FIG. and discharged out of the airflow buffering space 50 through the second opening 52 .
  • FIG. By making the diameter of the second opening 52 larger than the diameter of the first opening 51, the amount of air flowing out from the air outflow hole 14 to the air flow buffering space 50 fluctuates, and more air flows in than in the steady state.
  • the amount discharged from the second opening 52 relatively distant from the air intake port 42 is It can be larger than the amount discharged from the adjacent first opening 51 .
  • stable air can be supplied to the particle sensor without being affected by the volume or speed of the air flowing through the air passage 11, and the particle concentration can be measured more accurately.
  • the normal line L1 passing through the center of the air outflow hole 14 (shown in FIG. 3) and the wall 13b in which the second opening 52 is provided is preferably shorter than the distance between the normal line L1 (shown in FIG.
  • FIG. 9 is a seventh example of a partially enlarged view near the particle sensor.
  • the vehicle air conditioner 1 according to the present embodiment has a first opening 51 and a third opening 53, and part of the air flowing out from the air outflow hole 14 flows through the first opening 51.
  • the third opening 53 includes a form that allows the first space 58 and the second space 59 to communicate with each other.
  • the diameter of the third opening 53 of the second rib 15 that blocks the air flowing toward the air intake port 42 of the particle sensor 40 is made smaller, and the air is discharged from the airflow buffering space 50 without flowing into the air intake port 42 .
  • the diameter of one opening 51 By increasing the diameter of one opening 51, the amount of air flowing into the air intake port 42 can be reduced. As a result, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • FIG. 10 is an eighth example of a partially enlarged view near the particle sensor.
  • the vehicle air conditioner 1 according to the present embodiment has a second opening 52 and a third opening 53 , and part of the air flowing out from the air outflow hole 14 flows through the second opening 52 .
  • the third opening 53 includes a form that allows the first space 58 and the second space 59 to communicate with each other.
  • the diameter of the third opening 53 of the second rib 15 that blocks the air flowing toward the air intake port 42 of the particle sensor 40 is made smaller, and the air is discharged from the airflow buffering space 50 without flowing into the air intake port 42 .
  • the amount of air flowing into the air intake port 42 can be reduced. As a result, stable air can be supplied to the particle sensor without being affected by air volume or wind speed, and the particle concentration can be measured more accurately.
  • Air conditioner 2 Intake part 2a Outside air introduction port 2b Inside air introduction port 3 Blower part 4 Blower outlet duct part 5 Air conditioner part 6 Evaporator 6a Intake surface 7 Air mix door 8 Heat exchanger for heating 9 Aspirator 10 Case 11 Air passage 12 Duct wall 12a Evaporator-facing wall 12b Wall 12c connected to the evaporator-facing wall Wall facing the wall connecting to the evaporator-facing wall 13 First rib 13a Wall 13b on the side opposite to the traveling direction 14 Air Outflow Hole 15 Second Rib 20 Blower 21 Impeller 22 Motor 23 Register 30 Air Filter 40 Particle Sensor 41 Housing 42 Air Inlet 43 Outlet 50 Air Flow Buffer Space 51 First Opening 52 Second Opening 53 Third Opening 58 First space 59 Second space 61 Defrost opening 62 Vent opening 63 Foot opening L1 Normal line L2 passing through the center of the air outflow hole Normal line passing through the center of the air intake

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  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

Le but de la présente divulgation est de fournir un dispositif de climatisation de véhicule pourvu d'un capteur de particules qui permet une mesure précise de la concentration de particules en apportant de l'air stable au capteur de particules, sans être influencé par la quantité ou la vitesse du flux d'air insufflé par une soufflante. La solution de la présente divulgation concerne un dispositif de climatisation de véhicule qui comprend un boîtier (10) ayant une paroi de conduite (12), une soufflante (20), un filtre à air et un capteur de particules (40). Le capteur de particules est installé sur le côté extérieur de la paroi de conduite sur le côté aval du filtre à air, ainsi que sur le côté aval de la soufflante. La paroi de conduite possède une première nervure (13) et un orifice de sortie d'air (14). Le capteur de particules possède une enveloppe (41) et un orifice d'admission d'air (42). Le dispositif de climatisation de véhicule possède un espace tampon de flux d'air (50) entouré par le côté externe de la paroi de conduite, la première nervure, et une surface de paroi externe de l'enveloppe. L'orifice de sortie d'air et l'orifice d'admission d'air sont reliés à l'espace tampon de flux d'air. La normale L1 passant par le centre de l'orifice de sortie d'air et la normale L2 passant par le centre de l'orifice d'admission d'air sont décalées l'une par rapport à l'autre.
PCT/JP2022/005033 2021-02-16 2022-02-09 Dispositif de climatisation de véhicule WO2022176727A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516677A (ja) * 1991-07-11 1993-01-26 Nissan Motor Co Ltd 車両用冷却装置
JP2017095086A (ja) * 2015-11-12 2017-06-01 株式会社デンソー 車両用空調装置
JP2018090083A (ja) * 2016-12-02 2018-06-14 株式会社デンソー 車両用空調装置
JP2018115959A (ja) * 2017-01-18 2018-07-26 株式会社デンソー 粉塵検出装置
JP2019026039A (ja) * 2017-07-28 2019-02-21 株式会社デンソー 車両用空調装置
JP2019043279A (ja) * 2017-08-31 2019-03-22 株式会社デンソー 埃濃度検出装置
JP2020138615A (ja) * 2019-02-27 2020-09-03 株式会社デンソー 粒子濃度検出装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516677A (ja) * 1991-07-11 1993-01-26 Nissan Motor Co Ltd 車両用冷却装置
JP2017095086A (ja) * 2015-11-12 2017-06-01 株式会社デンソー 車両用空調装置
JP2018090083A (ja) * 2016-12-02 2018-06-14 株式会社デンソー 車両用空調装置
JP2018115959A (ja) * 2017-01-18 2018-07-26 株式会社デンソー 粉塵検出装置
JP2019026039A (ja) * 2017-07-28 2019-02-21 株式会社デンソー 車両用空調装置
JP2019043279A (ja) * 2017-08-31 2019-03-22 株式会社デンソー 埃濃度検出装置
JP2020138615A (ja) * 2019-02-27 2020-09-03 株式会社デンソー 粒子濃度検出装置

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