CN115836206A - Air conditioner for vehicle - Google Patents
Air conditioner for vehicle Download PDFInfo
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- CN115836206A CN115836206A CN202280005349.7A CN202280005349A CN115836206A CN 115836206 A CN115836206 A CN 115836206A CN 202280005349 A CN202280005349 A CN 202280005349A CN 115836206 A CN115836206 A CN 115836206A
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- 239000002245 particle Substances 0.000 claims abstract description 152
- 238000004378 air conditioning Methods 0.000 claims description 32
- 230000003139 buffering effect Effects 0.000 claims description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 15
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000007664 blowing Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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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
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- 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
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- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Thermal Sciences (AREA)
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The purpose of the present disclosure is to provide a vehicle air conditioner equipped with a particle sensor, which is capable of accurately measuring the concentration of particles by supplying stable air to the particle sensor without being influenced by the air volume, the air speed, or the like of the air blown from a blower. The air conditioner for a vehicle is provided with a housing (10) having a duct wall (12), a blower (20), an air filter, and a particle sensor (40), wherein the particle sensor is mounted on the outside of the duct wall on the downstream side of the blower and on the downstream side of the air filter, the duct wall has a first rib (13) and an air outlet hole (14), the particle sensor has a frame (41) and an air inlet opening (42), the air conditioner for a vehicle has an air flow buffer space (50) surrounded by the outside of the duct wall, the first rib, and the outer wall surface of the frame, the air outlet hole and the air inlet opening are connected to the air flow buffer space, and a normal line (L1) passing through the center of the air outlet hole and a normal line (L2) passing through the center of the air inlet opening are offset from each other.
Description
Technical Field
The present disclosure relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle including a particle sensor.
Background
An air conditioner for a vehicle including a particle sensor is known (see, for example, patent document 1). In the air conditioner disclosed in patent document 1, a particle sensor is provided upstream of the blower in the intake box. The particle sensor is provided in an air introduction chamber opening that acquires air in the vehicle interior, and acquires a part of air that circulates through the air introduction chamber and uses the air for the measurement of the particle concentration. Therefore, the particle sensor mounted on the air conditioner disclosed in patent document 1 can measure the particle concentration of the air in the vehicle interior. Thus, it can be determined whether or not the air flowing through the vehicle interior is clean.
Documents of the prior art
Patent document
Patent document 1, japanese patent laid-open No. 2020-071140
Disclosure of Invention
Problems to be solved by the invention
However, there is a need to determine whether or not the air blown out into the vehicle interior from the air conditioner, not the air flowing through the vehicle interior, is clean. For example, by measuring the particle concentration of air flowing through the air conditioner, it is possible to determine whether or not a filter mounted in the air conditioner functions normally, and use the filter for the purpose of the filter replacement timing or the like. When the particle sensor is desired to be used for such an application, it is necessary to use air flowing through the filter for measurement. In the structure of a general air conditioner for a vehicle, a filter may be provided upstream of a blower, but in this case, there is a case where a space for installing a particle sensor is small downstream of the filter and upstream of the blower, and it is preferable to provide the particle sensor downstream of the blower. However, when the particle sensor is mounted downstream of the blower, the value sensed by the particle sensor is influenced by the environment such as the air volume or the air speed of the air blown from the blower. That is, when the air volume or the air speed blown from the blower is large, the amount of particles passing through the sensor per unit time increases, and the particle concentration may be sensed to be higher than when the air volume or the air speed is small. Alternatively, since a large number of particles flow through the sensor and the particle sensor cannot normally sense the particles, the particle concentration may be sensed lower than in the case where the air volume or the wind speed is small.
An object of the present disclosure is to provide a vehicle air conditioner including a particle sensor, which can accurately measure a particle concentration by supplying stable air to the particle sensor without being influenced by the amount of air blown from a blower, the wind speed, or the like.
Means for solving the problems
The air conditioner for a vehicle of the present invention includes: a housing having a duct wall defining an air passage through which air circulates; a blower for sending the air to the air passage; an air filter disposed in the air passage and through which the air flows; and a particle sensor mounted on an outer side of the duct wall on a downstream side of the blower and on a downstream side of the air filter, wherein the duct wall has a first rib in a cylindrical shape protruding from the outer side of the duct wall toward the particle sensor and an air outflow hole through which 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 and acquiring the air flowing out from the air outflow hole, the vehicle air conditioner has an air flow buffer space surrounded by the outer side of the duct wall, the first rib, and an outer wall surface of the housing, the air outflow hole and the air intake port are connected to the air flow buffer space, and a normal line passing through a center of the air outflow hole and a normal line passing through a center of the air intake port are displaced from each other.
In the air conditioner for a vehicle according to the present invention, it is preferable that a distance between a normal line passing through a center of the air outflow hole and a normal line passing through a center of the air intake port is larger than a sum of a radius of the air outflow hole and a radius of the air intake port. Since the air flowing out of the air outlet does not directly flow into the air intake port, stable air can be supplied to the particle sensor without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
In the air conditioning apparatus for a vehicle according to the present invention, it is preferable that the particle sensor is disposed on the downstream side of the blower and on the outer side of the duct wall on the upstream side of the evaporator. A space is easily secured on the downstream side of the blower and on the upstream side of the evaporator, and the particle sensor can be relatively easily disposed. In addition, by disposing the particle sensor outside the duct wall, an increase in the ventilation resistance can be prevented.
In the air conditioning apparatus for a vehicle according to the present invention, it is preferable that the duct wall has an evaporator facing wall facing an intake surface of the evaporator, and the particle sensor is disposed outside the evaporator facing wall. The particle sensor can be relatively easily disposed by rarely disposing an actuator and a link for driving a damper of an air conditioner, and pipes for supplying a heat medium to the evaporator and the heating heat exchanger, on the outer side of the evaporator-facing wall.
In the air conditioning apparatus for a vehicle according to the present invention, it is preferable that the duct wall has a blower blowing duct portion that connects the blower and the evaporator, the conditioning apparatus is disposed in the blower duct portion, and the particle sensor is disposed in a portion adjacent to a mounting position of the conditioning apparatus in an outer side of the blower blowing duct portion. The blower outlet duct section often has a regulator disposed therein because it allows air blown from the blower to flow therethrough, and therefore has a certain space.
In the air conditioning device for a vehicle according to the present invention, it is preferable that the air conditioning device for a vehicle includes a first opening provided in a wall on a traveling direction side of the air intake port, among walls of the first rib, and a part of the air flowing out of the air outlet port is discharged to the outside of the air flow buffer space through the first opening. Since the amount of air flowing into the air intake port is reduced, it is possible to prevent a large amount of air from flowing into the particle sensor. In addition, an increase in pressure in the air flow buffer space due to air entering the air flow buffer space from the air outlet hole can be suppressed. As a result, stable air can be supplied to the particle sensor without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
In the air conditioning device for a vehicle according to the present invention, it is preferable that the air conditioning device for a vehicle includes a second opening provided in a wall of the first rib on a side opposite to a traveling direction of the air flowing out from the air outlet hole toward the air intake port, and a part of the air flowing out from the air outlet hole is discharged to the outside of the air flow buffer space through the second opening. Since the amount of air flowing into the air intake port is reduced, it is possible to prevent a large amount of air from flowing into the particle sensor. In addition, an increase in pressure in the air flow buffer space due to air entering the air flow buffer space from the air outlet hole can be suppressed. As a result, stable air can be supplied to the particle sensor without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
In the air conditioning device for a vehicle according to the present invention, it is preferable that the housing has a second rib protruding from an outer side of the duct wall toward the particle sensor and dividing the air flow buffering space into a first space including the air outflow hole and a second space including the air intake port, and the air conditioning device for a vehicle has a third opening provided in the second rib, the third opening communicating the first space with the second space. Since a part of the air flowing out of 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 influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
In the air conditioning device for a vehicle of the present invention, it is preferable that the housing has a second rib that protrudes from an outside of the duct wall toward the particle sensor and divides the air flow buffering space into a first space including the air outflow hole and a second space including the air intake port, and the air conditioning device for a vehicle includes: a first opening provided in a wall on a traveling direction side of the air flowing out of the air outflow hole toward the air intake port, among walls of the first rib; a second opening provided in a wall of the first rib, the wall being in a direction opposite to a traveling direction of the air flowing out of the air outflow hole toward the air intake port; and a third opening provided in the second rib, a part of the air flowing out of the air outflow hole being discharged to the outside of the air flow buffer space through the first opening or the second opening, the third opening communicating the first space with the second space, and satisfying a relationship of a3 < a0 < a1 < a2 when an area of the air outflow hole is a0, an area of the first opening is a1, an area of the second opening is a2, and an area of the third opening is a 3. By making a3 smaller than a0, more air can be blocked by the second rib, and thus more air can be prevented from flowing into the particle sensor. Further, by making a1 and a2 larger than a0, more air is discharged from the first opening or the second opening to the outside of the air flow buffer space, and therefore the amount of air flowing into the air intake port can be reduced. As a result, stable air can be supplied to the particle sensor without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
Effects of the invention
According to the present disclosure, it is possible to provide a vehicle air conditioner including a particle sensor, which can supply stable air to the particle sensor without being influenced by the air volume, the air speed, or the like of air blown from a blower, and can accurately measure the particle concentration.
Drawings
Fig. 1 is a schematic vertical cross-sectional view of a vehicle air conditioner according to the present embodiment.
Fig. 2 is an example of a schematic cross-sectional view of the air conditioner for a vehicle shown in fig. 1.
Fig. 3 is a first example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 4 is a second example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 5 is a third example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 6 is a fourth example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 7 is a fifth example of a partial enlarged view of the vicinity of the particle sensor.
Fig. 8 is a sixth example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 9 is a seventh example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 10 is an eighth example of a partially enlarged view of the vicinity of the particle sensor.
Fig. 11 is another schematic cross-sectional view of the air conditioner for a vehicle shown in fig. 1.
Detailed Description
An embodiment of the present invention will be described below with reference to the attached drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the embodiments described below. In the present specification and the drawings, the same reference numerals denote the same elements. Various modifications can be made as long as the effects of the present invention are achieved.
Fig. 1 is a schematic vertical cross-sectional view of a vehicle air conditioner according to the present embodiment. Fig. 2 is a schematic cross-sectional view of the air conditioner for a vehicle shown in fig. 1. Fig. 3 is a first example of a partially enlarged view of a portion a of fig. 2. As shown in fig. 1 or 2, the vehicle air conditioner 1 of the present embodiment includes: a housing 10 having a duct wall 12 defining an air passage 11 through which air flows; a blower 20 for sending air to the air passage 11; an air filter 30 (shown in fig. 1) disposed in the air passage 11 and through which air flows; and a particle sensor 40 (shown in fig. 2), in which the particle sensor 40 is attached to the outside of the duct wall 12 on the downstream side of the blower 20 and on the downstream side of the air filter 30 as shown in fig. 2, the duct wall 12 has a tubular first rib 13 protruding from the outside of the duct wall 12 toward the particle sensor 40 and an air outlet 14 through which air to be detected flows out from the air passage 11, the particle sensor 40 has a frame 41 and an air inlet 42 provided in the frame 41 and acquiring the air flowing out from the air outlet 14, the vehicle air conditioning apparatus 1 has an air flow buffer space 50 surrounded by the outside of the duct wall 12, the first rib 13, and the outer wall surface of the frame 41, the air outlet 14 and the air inlet 42 are connected to the air flow buffer space 50, and a normal line L1 passing through the center of the air outlet 14 and an air inlet L2 passing through the center of the air inlet 42 are displaced from each other, as shown in fig. 3.
As shown in fig. 1, the air conditioner 1 for a vehicle includes an air intake unit 2, an air blowing unit 3, a blower blowing duct unit 4, and an air conditioning unit 5, and forms an air flow of an appropriate temperature and blows the air into a vehicle interior. The air inlet 2 has an external air inlet 2a for introducing air (external air) outside the vehicle interior and an internal air inlet 2b for introducing air (internal air) inside the vehicle interior opened in the case 10, and an internal/external air switching door (not shown) for opening and closing the external air inlet 2a and the internal air inlet 2b is disposed in the case. By opening and closing the inside and outside air switching door, the ratio of the air flowing in from the outside air inlet port 2a to the air flowing in from the inside air inlet port 2b is adjusted. The air blowing unit 3 is connected to the downstream of the air intake unit 2, and houses a blower 20. The blower outlet duct portion 4 is a portion connecting the blower portion 3 and the air conditioner portion 5. The air conditioner 5 is a part that adjusts the temperature of the air introduced by the blower 20 and blows the air into the vehicle interior. Preferably, the air conditioner 5 accommodates an evaporator 6. The evaporator 6 is a cooling heat exchanger, and dehumidifies and cools air as necessary. The air conditioner 5 may be configured to accommodate the air mix door 7 and the heating heat exchanger 8. The air mix door 7 adjusts the ratio of the air passing through the heating heat exchanger 8 to the air bypassing the heating heat exchanger 8. The heating heat exchanger 8 heats the air passing through the evaporator 6 as necessary to form temperature-adjusted air. The air conditioner 5 is provided with a defroster opening 61, a ventilation opening 62, and a foot opening 63 at the most downstream portion. The openings 61, 62, and 63 are connected to an air outlet (not shown) in the vehicle compartment indirectly or directly via a duct (not shown).
As shown in fig. 1, the casing 10 forms the outer shell of the air intake unit 2, the air blowing unit 3, the blower outlet duct unit 4, and the air conditioning unit 5, and is a housing formed by integrating these components. The air passage 11 is an internal space of the housing 10. The duct wall 12 is a wall of the housing 10 that defines the air passage 11. As shown in fig. 3, the first rib 13 has a cylindrical shape, a square cylindrical shape, or the like, and has one end fixed to the outside of the duct wall 12 and the other end abutting against or fixed to the outside of the housing 41 of the particle sensor 40. The air outflow hole 14 is an opening provided in a portion of the duct wall 12 surrounded by the first rib 13.
As shown in fig. 1, the blower 20 is a device that has an impeller 21 and a motor 22 and that sends air blown into the vehicle interior. When the blower 20 is driven, air is introduced from the outside air inlet 2a or the inside air inlet 2 b.
As shown in fig. 1, the air filter 30 is a filter for removing particles from the air flowing through the air passage 11. The kind of the air filter 30 is not particularly limited. The air filter 30 may be disposed upstream of the blower 20 in the air passage 11 as shown in fig. 1, or may be disposed downstream of the blower 20 and upstream of the evaporator 6 (not shown). When the air filter 30 is disposed on the upstream side of the blower 20 as shown in fig. 1, the air filter 30 is preferably disposed across the entire air passage 11 in the portion of the blower 3 after the air intake unit 2. In addition, when the air filter 30 is disposed on the upstream side of the evaporator 6, the air filter 30 is preferably disposed across the entire air passage 11 before the evaporator 6.
The particle sensor 40 is a measuring device that detects and counts particles in the air. The type of the particle sensor 40 is not particularly limited, but is, for example, a sensor using a light scattering method as shown in patent document 2. As shown in fig. 3, the particle sensor 40 preferably further includes an exhaust port 43 for exhausting the measured air. The housing 41 is a casing forming the outer shell of the particle sensor 40, and houses a light emitting section (not shown) and a light receiving section (not shown) of the sensor. The air intake port 42 is an opening provided in the housing 41 and is an opening for taking air to be detected into the particle sensor 40. As shown in fig. 2, the particle sensor 40 is provided on the downstream side of the blower 20 and on the downstream side of the air filter 30 (shown in fig. 1), and thereby the cleanliness of the air blown into the vehicle interior through the air filter 30 can be confirmed. Further, although there is a concern that the air flow resistance increases when the particle sensor 40 is mounted on the inner side of the duct wall 12, the increase in the air flow resistance can be prevented by mounting the particle sensor 40 on the outer side of the duct wall 12.
Next, a more preferable mounting position of the particle sensor 40 will be described.
As shown in fig. 2, the vehicle air conditioner 1 of the present embodiment preferably further includes an evaporator 6 disposed in the air passage 11 to cool the air, and the particle sensor 40 is disposed on the downstream side of the blower 20 and on the outer side of the duct wall 12 on the upstream side of the evaporator 6. A space is easily secured on the downstream side of the blower 20 and on the upstream side of the evaporator 6, and the particle sensor 40 can be relatively easily disposed. In addition, by disposing the particle sensor 40 outside the duct wall 12, an increase in the ventilation resistance can be prevented.
In the vehicle air conditioner 1 of the present embodiment, as shown in fig. 2, the duct wall 12 preferably has an evaporator facing wall 12a facing the suction surface 6a of the evaporator 6, and the particle sensor 40 is preferably disposed outside the evaporator facing wall 12 a. The particle sensor 40 can be relatively easily disposed outside the evaporator opposing wall 12a by disposing, on the outside, a small number of actuators (not shown) and links (not shown) for driving the dampers of the air conditioner 1, and piping (not shown) for supplying the heat medium to the evaporator 6 and the heat exchanger for heating (not shown). More preferably, the particle sensor 40 is disposed at a portion where the distance between the suction surface 6a of the evaporator 6 and the inner wall surface of the evaporator facing wall 12a is shorter than the distance between the center of the suction surface 6a of the evaporator 6 and the inner wall surface of the evaporator facing wall 12a facing the suction surface 6 a. Such a portion can easily secure a space also in the outside of the evaporator opposing wall 12a, and therefore the particle sensor 40 can be relatively easily disposed.
Fig. 11 is another schematic cross-sectional view of the air conditioner for a vehicle shown in fig. 1. As shown in fig. 11, the air conditioning apparatus 1 for a vehicle according to the present embodiment preferably includes a regulator (register) 23 that adjusts the amount of electric power input to the blower 20, the duct wall 12 includes a blower outlet duct portion 4 that connects the blower 20 to the evaporator 6, the regulator 23 is disposed in the blower outlet duct portion 4, and the particle sensor 40 is disposed in a portion of the outside of the blower outlet duct portion 4 that is adjacent to the mounting position of the regulator 23. The blower outlet duct portion 4 is also provided with a certain space for circulating the air blown out from the blower 20, and therefore the regulator 23 is often disposed, but is also preferable as a place where the particle sensor 40 is disposed. The regulator 23 is electrically connected to the motor 22 of the blower 20, and incorporates a plurality of resistors having predetermined resistance values. The predetermined control device can adjust the rotation speed of the blower 20 to a desired speed by selecting which resistor in the adjusting device 23 is energized. The installation positions of the regulator 23 and the particle sensor 40 are preferably outside the wall 12b facing the upstream side of the evaporator facing wall 12a, of the duct walls 12 constituting the blower blowing duct portion 4.
Although the embodiment in which the particle sensor 40 is disposed on the upstream side of the evaporator 6 has been described above, the particle sensor 40 may be disposed on the downstream side (not shown) of the evaporator 6 in the air conditioning device 1 for a vehicle according to the present embodiment. The mode of disposing the particle sensor 40 on the downstream side of the evaporator 6 is, for example, a mode of disposing the particle sensor 40 in a portion adjacent to the mounting position of the getter 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, the outside of the portion where the heating heat exchanger 8 is provided, out of the outside of the air passage 11 on the downstream side of the evaporator 6.
As shown in fig. 3, the air flow 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 frame 41. The air outflow hole 14 and the air intake port 42 open to the air flow buffering space 50. The air intake port 42 may be disposed upstream of the air outflow hole 14 in the flow direction of the air in the casing 10 or downstream of the air outflow hole in the casing 10 in the flow direction of the air.
As shown in fig. 3, a normal line L1 passing through the center of the air outflow hole 14 and a normal line L2 passing through the center of the air intake port 42 are offset from each other. This can prevent a part or all of the air flowing out of the air outlet hole 14 from flowing into the air inlet 42 as it is. A part or all of the air flowing out of the air outflow hole 14 collides against the outer wall surface of the housing 41 of the particle sensor 40. The collided air changes its direction and travels along the outer wall surface of the housing 41 of the particle sensor 40. At this time, since the air intake port 42 is opened in the housing 41 of the particle sensor 40, air flows into the air intake port 42. In this way, the wind speed is temporarily reduced, thereby reducing the momentum of the air. Therefore, even when the air volume or the air speed of the air blown out from the blower 20 is large, stable air can be supplied to the particle sensor 40, and the particle concentration can be accurately measured.
In the vehicle air conditioner 1 of the present embodiment, as shown in fig. 3, the distance between the normal L1 passing through the center of the air outflow hole 14 and the normal L2 passing through the center of the air intake port 42 is preferably larger than the sum of the radius of the air outflow hole 14 and the radius of the air intake port 42. The air intake port 42 is provided at a position where the normal line L1 of the air outflow hole 14 does not pass, and all the air flowing out of the air outflow hole 14 can be prevented from flowing into the air intake port 42 as it is. Therefore, stable air can be supplied to the particle sensor without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately. The relationship between the radius of the air outflow hole 14 and the radius of the air intake port 42 is not particularly limited, and the radius of the air outflow hole 14 may be smaller than the radius of the air intake port 42 or the radius of the air outflow hole 14 may be larger than the radius of the air intake port 42.
Fig. 4 is a second example of a partially enlarged view of the vicinity of the particle sensor. In fig. 3 to 10, the vicinity of the particle sensor is, for example, a portion surrounded by a in fig. 2 or B in fig. 11, specifically, a portion including the air flow buffer space 50 and the particle sensor 40. As shown in fig. 4, the vehicle air conditioner 1 of the present embodiment preferably has a first opening 51 provided in a wall 13a on the traveling direction side of the air intake port 42 out of the walls of the first rib 13, the wall facing the air outflow hole 14, and a part of the air flowing out of the air outflow hole 14 is discharged to the outside of the air flow buffer space 50 through the first opening 51. When the first opening 51 is provided, 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, and after the direction of the air flow changes, the air is branched into the air flowing toward the air intake port 42 of the particle sensor 40 and the air flowing toward the first opening 51. The air directed toward the first opening 51 is discharged outside the air flow buffering space 50 through the first opening 51. In this way, the amount of air flowing into the air intake port 42 is reduced, and thus, a large amount of air can be prevented from flowing into the particle sensor 40. In addition, an increase in pressure in the air flow buffer space 50 due to the air taken into the air flow buffer space 50 from the air outlet hole 14 can be suppressed. As a result, stable air can be supplied to the particle sensor 40 without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately. Further, if the amount of air flowing toward the first opening 51 is large, the amount of air flowing into the air intake 42 can be further reduced, and the flow of a large amount of air through the particle sensor 40 can be prevented. Therefore, it is preferable that 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 of the vicinity of the particle sensor. As shown in fig. 5, the vehicle air conditioner 1 of the present embodiment preferably has a second opening 52 provided in a wall 13b of the wall of the first rib 13 on the opposite side of the direction of travel of the air intake port 42 from the air outlet hole 14, and a part of the air flowing out of the air outlet hole 14 is discharged to the outside of the air flow buffer space 50 through the second opening 52. When the second opening 52 is provided, 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, changes the direction of the air flow, and then branches into the air flowing toward the air intake port 42 of the particle sensor 40 and the air flowing toward the second opening 52, which is the opposite side thereof. The air directed toward the second opening 52 is discharged outside the air flow buffering space 50 through the second opening 52. In this way, the amount of air flowing into the air intake port 42 is reduced, and thus, a large amount of air can be prevented from flowing into the particle sensor 40. In addition, an increase in pressure in the air flow buffer space 50 due to the air taken into the air flow buffer space 50 from the air outlet hole 14 can be suppressed. As a result, stable air can be supplied to the particle sensor 40 without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately. Further, if the amount of air flowing toward the second opening 52 is large, the amount of air flowing into the air intake 42 can be further reduced, and the flow of a large amount of air through the particle sensor 40 can be prevented. 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 of the vicinity of the particle sensor. In the air conditioner 1 for a vehicle of the present embodiment, it is preferable that the housing 10 has the second rib 15, as shown in fig. 6, the second rib 15 protruding from the outside of the duct wall 12 toward the particle sensor 40 and dividing the air flow buffering space 50 into the first space 58 including the air outflow hole 14 and the second space 59 including the air intake port 42, the air conditioner 1 for a vehicle has the third opening 53 provided in the second rib 15, and the third opening 53 communicates the first space 58 with the second space 59. When the second rib 15 and the third opening 53 are provided, the air that has exited from the air outflow hole 14 flows into the first space 58, collides with the outer wall surface of the housing 41 of the particle sensor 40, changes the direction of the air flow, and then a part of the air passes through the third opening 53 of the second rib 15, while the remaining air is blocked by the second rib 15. The air passing through the third opening 53 moves to the second space 59 and flows into the air intake port 42. In this way, since a part of the air flowing out of the air outflow hole 14 is blocked by the second rib 15, it is possible to prevent a large amount of air from flowing into the particle sensor 40. As a result, stable air can be supplied to the particle sensor 40 without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately. Further, if a large amount of air can be blocked by the second ribs 15, the amount of air flowing into the air intake 42 can be further reduced, and the flow of a large amount of air in the particle sensor 40 can be prevented. Therefore, it is preferable that 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 partial enlarged view of the vicinity of the particle sensor. In the air conditioning device 1 for a vehicle of the present embodiment, it is preferable that the casing 10 has the second rib 15, the second rib 15 protruding from the outside of the duct wall 12 toward the particle sensor 40 and dividing the air flow buffering space 50 into the first space 58 including the air outflow hole 14 and the second space 59 including the air intake port 42, the air conditioning device 1 for a vehicle has the first opening 51 provided in the wall 13a on the side of the traveling direction of the air flowing out from the air outflow hole 14 toward the air intake port 42 among the walls of the first rib 13, the second opening 52 provided in the wall 13b on the opposite side of the traveling direction of the air flowing out from the air outflow hole 14 toward the air intake port 42 among the walls of the first rib 13, and the third opening 53 provided in the second rib 15, a part of the air flowing out of the air outflow hole 14 is discharged to the outside of the air flow buffering space 50 through the first opening 51 or the second opening 52, and the third opening 53 communicates the first space 58 with the second space 59, and satisfies the relationship of a3 < a0 < a1 < a2 when the area of the air outflow hole 14 is a0, the area of the first opening 51 is a1, the area of the second opening 52 is a2, and the area of the third opening 53 is a 3. The second rib 15 may be a partition wall such as a plate, or a cylinder such as a cylinder or a square cylinder sharing a part of the outer periphery with the first rib 13. When the first opening 51, the second opening 52, and the third opening 53 are provided, the air that has exited from 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, changes the direction of the air flow, and then branches into air that faces the third opening 53 of the second rib 15 and air that faces the second opening 52 that is the opposite side thereof. The air toward the second opening 52 is discharged outside the air flow buffering space through the second opening 52. A part of the air toward the third opening 53 moves toward the second space 59 through the third opening 53, and the remaining air is blocked by the second rib 15. The air moved to the second space 59 is branched into air toward the air intake 42 of the particle sensor 40 and air toward the first opening 51. The air directed toward the first opening 51 is discharged outside the air flow buffering space 50 through the first opening 51. By reducing the air to the air intake port 42 in a plurality of stages, stable air can be supplied to the particle sensor without being influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately. In particular, the following effects can be obtained by satisfying the relationship of a3 < a0 < a1 < a 2. By making a3 smaller than a0, more air can be blocked by the second rib 15, and thus more air can be prevented from flowing into the particle sensor 40. 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 air flow buffering space 50, and therefore the amount of air flowing into the air intake port 42 can be reduced.
Fig. 8 is a sixth example of a partially enlarged view of the vicinity of the particle sensor. As shown in fig. 8, the air conditioner 1 for a vehicle according to the present embodiment includes the following: the air flow buffering space 50 has a first opening 51 and a second opening 52, and a part of the air flowing out of the air outflow hole 14 is discharged to the outside through the first opening 51 and the second opening 52. In this embodiment, it is more preferable that the relationship of a0 < a1 < a2 be satisfied when the area of the air outflow hole 14 is a0, the area of the first opening 51 is a1, and the area of the second opening 52 is a 2. When the amount of air flowing out from the air outflow hole 14 to the air flow buffer space 50 varies and more air flows in than the steady state by making the diameter of the second opening 52 larger than the diameter of the first opening 51, the amount of air discharged to the outside of the air flow buffer space 50 from the second opening 52 relatively distant from the air intake port 42 can be made larger than the amount discharged from the first opening 51 relatively close to the air intake port 42. As a result, stable air can be supplied to the particle sensor without being influenced by the air volume, the air speed, or the like of the air flowing through the air passage 11, and the particle concentration can be measured more accurately. As shown in fig. 8, when the first opening 51 and the second opening 52 are provided, the distance between the normal L1 (shown in fig. 3) passing through the center of the air outflow hole 14 and the wall 13b provided with the second opening 52 is preferably shorter than the distance between the normal L1 (shown in fig. 3) passing through the center of the air outflow hole 14 and the wall 13a provided with the first opening 51. By providing the second opening 52 closer to the air outlet hole 14 than the first opening 51, when the amount of air flowing out from the air outlet hole 14 to the air flow buffer space 50 varies and more air flows in than in a steady state, the air can be discharged more smoothly from the second opening 52.
Fig. 9 is a seventh example of a partially enlarged view of the vicinity of the particle sensor. As shown in fig. 9, the air conditioner 1 for a vehicle according to the present embodiment includes the following: the air flow buffering space 50 has a first opening 51 and a third opening 53, and a part of the air flowing out of the air outflow hole 14 is discharged through the first opening 51 to the outside, and the third opening 53 communicates the first space 58 with the second space 59. In this aspect, it is more preferable that the relationship of a3 < a0 < a1 be satisfied when the area of the air outflow hole 14 is a0, the area of the first opening 51 is a1, and the area of the third opening 53 is a 3. By making 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 smaller, the diameter of the first opening 51 that is discharged from the air flow buffer space 50 without flowing into the air intake port 42 is made larger, and 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 influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
Fig. 10 is an eighth example of a partially enlarged view of the vicinity of the particle sensor. As shown in fig. 10, the air conditioner 1 for a vehicle according to the present embodiment includes the following: the second opening 52 and the third opening 53 are provided, a part of the air flowing out from the air outflow hole 14 is discharged to the outside of the air flow buffering space 50 through the second opening 52, and the third opening 53 communicates the first space 58 with the second space 59. In this aspect, it is more preferable that the relationship of a3 < a0 < a2 be satisfied when the area of the air outflow hole 14 is a0, the area of the second opening 52 is a2, and the area of the third opening 53 is a 3. By making 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 smaller, the diameter of the second opening 52 that is discharged from the air flow buffer space 50 without flowing into the air intake port 42 is made larger, and 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 influenced by the air volume, the wind speed, or the like, and the particle concentration can be measured more accurately.
Description of the reference numerals
1. Air conditioner for vehicle
2. Air intake part
2a external air introducing port
2b internal air introduction port
3. Air supply part
4. Blowing pipe part of blower
5. Air conditioning unit
6. Evaporator with a heat exchanger
6a suction surface
7. Air mixing door
8. Heat exchanger for heating
9. Air aspirator
10. Shell body
11. Air passage
12. Pipe wall
12a evaporator opposed wall
12b connected to the opposite wall of the evaporator
12c a wall opposed to the wall connected to the opposed wall of the evaporator
13. First rib
13a wall on the traveling direction side
13b wall on the opposite direction to the traveling direction
14. Air outflow hole
15. Second rib
20. Air blower
21. Impeller
22. Motor with a stator and a rotor
23. Adjusting device
30. Air filter
40. Particle sensor
41. Frame body
42. Air intake
43. Discharge port
50. Air flow buffer space
51. First opening
52. Second opening
53. Third opening
58. The first space
59. Second space
61. Defrosting opening
62. Ventilation opening part
63. Foot opening
L1 normal line passing through center of air outflow hole
L2 normal line passing through the center of the air intake port
Claims (9)
1. An air conditioning device (1) for a vehicle is provided with:
a housing (10) having a duct wall (12) defining an air passage (11) through which air flows;
a blower (20) that sends the air to the air passage (11);
an air filter (30) disposed in the air passage (11) and through which the air flows; and
a particle sensor (40), characterized in that,
the particle sensor (40) is installed on the downstream side of the blower (20) and on the outside of the duct wall (12) on the downstream side of the air filter (30),
the duct wall (12) 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 air to be detected flows out from the air passage (11),
the particle sensor (40) has a housing (41) and an air intake opening (42) provided in the housing (41) and configured to take in air flowing out from the air outflow opening (14),
the air conditioning device (1) for a vehicle has an air flow buffering space (50) surrounded by the outside of the duct wall (12), the first rib (13), and the outer wall surface of the housing (41),
the air outflow hole (14) and the air intake opening (42) are connected to the air flow buffering space (50),
a normal line (L1) passing through the center of the air outlet hole (14) and a normal line (L2) passing through the center of the air intake port (42) are offset from each other.
2. An air conditioning device for a vehicle according to claim 1,
a distance between a normal line (L1) passing through the center of the air outflow hole (14) and a normal line (L2) passing through the center of the air intake port (42) is larger than a sum of a radius of the air outflow hole (14) and a radius of the air intake port (42).
3. The vehicular air-conditioning apparatus according to claim 1 or 2,
the vehicle air conditioning device (1) further comprises an evaporator (6) disposed in the air passage (11) and cooling the air,
the particle sensor (40) is disposed outside the duct wall (12) on the downstream side of the blower (20) and on the upstream side of the evaporator (6).
4. An air conditioning device for a vehicle according to claim 3,
the duct wall (12) has an evaporator-facing wall (12 a) facing the suction surface (6 a) of the evaporator (6),
the particle sensor (40) is disposed outside the evaporator opposing wall (12 a).
5. An air conditioning device for a vehicle according to claim 3,
the vehicle air conditioning device (1) is provided with a regulating device (23) for regulating the electric power input to the blower (20),
the duct wall (12) has a blower blow-out duct portion (4) that connects the blower (20) with the evaporator (6),
the adjusting device (23) is arranged on the blower blow-out duct portion (4),
the particle sensor (40) is disposed in a portion adjacent to the mounting position of the conditioning device (23) in the outside of the blower outlet duct section (4).
6. The vehicular air conditioning device according to any one of claims 1 to 5,
the vehicle air conditioner (1) has a first opening (51), the first opening (51) being provided in a wall (13 a) of the first rib (13) on the traveling direction side of the air flowing out from the air outlet hole (14) toward the air intake port (42), and a part of the air flowing out from the air outlet hole (14) is discharged outside the air flow buffer space (50) through the first opening (51).
7. The vehicular air conditioning device according to any one of claims 1 to 6,
the vehicle air conditioner (1) has a second opening (52), the second opening (52) being provided in a wall (13 b) of the wall of the first rib (13) on the opposite side of the direction of travel of the air flowing out from the air outlet hole (14) toward the air intake port (42), and a part of the air flowing out from the air outlet hole (14) is discharged outside the air flow buffer space (50) through the second opening (52).
8. The vehicular air conditioning device according to any one of claims 1 to 7,
the housing (10) has a second rib (15), the second rib (15) protruding from the outside of the duct wall (12) toward the particle sensor (40) and dividing the air flow buffer space (50) into a first space (58) including the air outflow hole (14) and a second space (59) including the air intake port (42),
the vehicle air conditioner (1) has a third opening (53) provided in the second rib (15), and the third opening (53) connects the first space (58) and the second space (59).
9. The vehicular air conditioning device according to any one of claims 1 to 5,
the housing (10) has a second rib (15), the second rib (15) protruding from the outside of the duct wall (12) toward the particle sensor (40) and dividing the air flow buffer space (50) into a first space (58) including the air outflow hole (14) and a second space (59) including the air intake port (42),
the air conditioning device (1) for a vehicle is provided with:
a first opening (51) provided in a wall (13 a) of the wall of the first rib (13) on the side of the direction of travel of the air flowing out from the air outlet hole (14) toward the air intake port (42);
a second opening (52) provided in a wall (13 b) of the wall of the first rib (13) that is opposite to the direction of travel of the air flowing out from the air outflow hole (14) toward the air intake port (42); and
a third opening (53) provided in the second rib (15),
a part of the air flowing out of the air outflow hole (14) is discharged out of the air flow buffering space (50) through the first opening (51) or the second opening (52),
the third opening (53) communicating the first space (58) with the second space (59),
when the area of the air outflow hole (14) is a0, the area of the first opening (51) is a1, the area of the second opening (52) is a2, and the area of the third opening (53) is a3, the relationship of a3 < a0 < a1 < a2 is satisfied.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-022388 | 2021-02-16 | ||
| JP2021022388 | 2021-02-16 | ||
| PCT/JP2022/005033 WO2022176727A1 (en) | 2021-02-16 | 2022-02-09 | Vehicular air conditioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115836206A true CN115836206A (en) | 2023-03-21 |
Family
ID=82931624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280005349.7A Pending CN115836206A (en) | 2021-02-16 | 2022-02-09 | Air conditioner for vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2022176727A1 (en) |
| CN (1) | CN115836206A (en) |
| WO (1) | WO2022176727A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3010799B2 (en) * | 1991-07-11 | 2000-02-21 | 日産自動車株式会社 | Vehicle cooling system |
| JP6477652B2 (en) * | 2015-11-12 | 2019-03-06 | 株式会社デンソー | Air conditioner for vehicles |
| JP6631487B2 (en) * | 2016-12-02 | 2020-01-15 | 株式会社デンソー | Vehicle air conditioner |
| JP2018115959A (en) * | 2017-01-18 | 2018-07-26 | 株式会社デンソー | Dust detection device |
| JP6791049B2 (en) * | 2017-07-28 | 2020-11-25 | 株式会社デンソー | Vehicle air conditioner |
| JP6662362B2 (en) * | 2017-08-31 | 2020-03-11 | 株式会社デンソー | Dust concentration detector |
| JP7259404B2 (en) * | 2019-02-27 | 2023-04-18 | 株式会社デンソー | Particle concentration detector |
-
2022
- 2022-02-09 WO PCT/JP2022/005033 patent/WO2022176727A1/en active Application Filing
- 2022-02-09 CN CN202280005349.7A patent/CN115836206A/en active Pending
- 2022-02-09 JP JP2023500769A patent/JPWO2022176727A1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2022176727A1 (en) | 2022-08-25 |
| WO2022176727A1 (en) | 2022-08-25 |
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