WO2023112875A1

WO2023112875A1 - Vehicle air conditioning device

Info

Publication number: WO2023112875A1
Application number: PCT/JP2022/045605
Authority: WO
Inventors: 秀樹長野
Original assignee: 株式会社ヴァレオジャパン
Priority date: 2021-12-16
Filing date: 2022-12-12
Publication date: 2023-06-22
Also published as: JPWO2023112875A1; CN118215590A

Abstract

[Problem] The purpose of the present disclosure is to provide a vehicle air conditioning device that allows the serviceability of particulate sensors to be ensured while suppressing an increase in the overall size of the air conditioning device. [Solution] A vehicle air conditioning device (1) according to the present disclosure is provided with a scroll housing (30) which accommodates an impeller and through the interior of which air flows, a filter housing (20), a particulate sensor (2), and a motor that comprises a rotating shaft that rotationally drives the impeller, wherein: the scroll housing comprises a first wall that has an intake port, a second wall that faces the first wall, and a spiral-shaped peripheral wall (34); the filter housing comprises a filter insertion port that opens in a filter mounting/removal direction, and a corner section (26) disposed on the filter insertion port side; the corner section extends in an eave-like shape further outward than the peripheral wall of the scroll housing; and a space occupied by the particulate sensor overlaps with an under-eave space (40 (41, 42)) that extends from the corner section toward the peripheral wall in an axial direction of the rotating shaft.

Description

vehicle air conditioner

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). In the air conditioner disclosed in Patent Document 1, the particle sensor is attached to a lid member that closes the outlet of the filter of the filter housing. Patent Literature 1 describes that since the cover member can be removed from the filter housing, the particle sensor can also be easily removed from the filter housing, improving serviceability.

JP 2019-10996 A

However, in Patent Literature 1, the particle sensor protrudes from the outer shape of the air conditioner, so there is a problem that the size of the air conditioner as a whole is increased.

An object of the present disclosure is to provide a vehicle air conditioner that can suppress an increase in the size of the entire air conditioner while ensuring the serviceability of the particle sensor.

A vehicle air conditioner according to the present invention comprises: a scroll housing that houses an impeller and has air flowing through it; a filter housing that is connected to the upstream side of the scroll housing and houses a filter; a particle sensor; and a motor having a rotating shaft for rotationally driving the impeller, wherein the scroll housing includes a first wall having a suction port for sucking air that has passed through the filter, and facing the first wall. The filter housing has a second wall and a spiral peripheral wall that connects the peripheral edge portions of the first wall and the second wall. a corner provided on the side of the filter insertion port, the corner extending outward from the peripheral wall of the scroll housing in an eaves-like manner, and the space occupied by the particle sensor is defined by the corner and a space under the eaves extending toward the peripheral wall along the axial direction of the rotating shaft.

In the vehicle air conditioner according to the present invention, it is preferable that the particle sensor is housed in the space under the eaves. Since the space under the eaves becomes a dead space, the particle sensor can be accommodated in the dead space, thereby further suppressing an increase in size.

In the vehicle air conditioner according to the present invention, the particle sensor is located on the corner side of a virtual plane extending the outer wall surface of the second wall in the space under the eaves so as to be orthogonal to the axial direction of the rotation shaft. It is preferably housed within the outer space. Since the space under the eaves becomes a dead space, the particle sensor can be accommodated in the dead space, thereby further suppressing an increase in size.

In the vehicle air conditioner according to the present invention, the scroll housing has a tongue portion and a motor cooling air introduction chamber provided outside the tongue portion, and the filter housing has the corner portion as the corner portion. The space occupied by the particle sensor has a first corner adjacent to the motor cooling air introduction chamber and a second corner different from the first corner among the corners, and the space occupied by the particle sensor is the space under the eaves. It is preferable to overlap the space under the eaves of the first corner or the space under the eaves of the second corner. Since the first corner and the second corner face the instrument panel, the particle sensor can be easily attached and detached from the vehicle interior, further improving serviceability.

In the vehicle air conditioner according to the present invention, the space occupied by the particle sensor overlaps with the space under the eaves of the first corner, and the particle sensor is located in the side wall of the motor cooling air introduction chamber. It is preferable that the attachment/detachment direction of the particle sensor with respect to the opposing wall is along the attachment/detachment direction of the filter. Since the attachment/detachment path of the filter can be used to attach and detach the particle sensor, serviceability of the particle sensor is further improved.

A vehicle air conditioner according to the present invention includes a fan outlet duct connected to the downstream side of the scroll housing, a register attached to an outer wall of the fan outlet duct, and a register service path for attaching and detaching the register. Further, the space occupied by the particle sensor overlaps with the space under the eaves of the first corner, and the particle sensor is located on a side wall of the motor cooling air introduction chamber facing the register service path. and the direction of attachment and detachment of the particle sensor with respect to the side wall is along the direction transverse to the register service path. Since the register service path can be used for attachment and detachment of the particle sensor, serviceability of the particle sensor is further improved.

In the vehicle air conditioner according to the present invention, the space occupied by the particle sensor overlaps the space under the eaves of the second corner, and the particle sensor is attached to the outer surface of the peripheral wall of the scroll housing. , It is preferable that the attachment/detachment direction of the particle sensor with respect to the peripheral wall is along the attachment/detachment direction of the filter.

In the vehicle air conditioner according to the present invention, the particle sensor is attached to the bottom wall of the corner portion, and the attachment/detachment direction of the particle sensor with respect to the bottom wall is the axial direction of the rotation shaft of the bottom wall. or along a direction inclined with respect to the axial direction of the rotation axis of the bottom wall. Since the attachment/detachment path of the filter can be used to attach and detach the particle sensor, serviceability of the particle sensor is further improved.

According to the present disclosure, it is possible to provide a vehicle air conditioner capable of suppressing an increase in product size while ensuring the serviceability of the particle sensor.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing which shows an example of the vehicle air conditioner which concerns on this embodiment. It is the figure which looked at the filter housing and scroll housing from the diagonally downward direction, and is a figure for demonstrating the space under the eaves. It is the bottom view of the filter housing and the scroll housing, showing a first example of the mounting position of the particle sensor. It is a bottom view of the filter housing and the scroll housing, showing a second example of the mounting position of the particle sensor. It is a bottom view of the filter housing and the scroll housing, showing a third example of the mounting position of the particle sensor. It is the figure which looked at the filter housing and scroll housing from the diagonally downward direction, and is a figure which shows the 4th example of the attachment position of a particle sensor. It is the figure which looked at the filter housing and scroll housing from the diagonally downward direction, and is a figure which shows the 5th example of the attachment position of a particle sensor.

One aspect of the present invention will be described below with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. In addition, in this specification and the drawings, constituent elements having the same reference numerals are the same as each other. Various modifications may be made as long as the effects of the present invention are achieved.

The present embodiment will be described below based on the attitude of being mounted on a vehicle. That is, front and rear indicate the traveling direction of the vehicle, left and right indicate the direction seen from the passenger in the vehicle width direction, and up and down indicate the vertical direction of the vehicle.

As shown in FIG. 1, a vehicle air conditioner 1 according to the present embodiment includes a scroll housing 30 that accommodates an impeller 51 and allows air to flow therein, and a filter that is connected to the upstream side of the scroll housing 30 for the air flow. 25, a particle sensor 2 (shown in FIG. 3), and a motor 52 having a rotation axis O that drives an impeller 51 to rotate. A first wall 32 having a suction port 31 for sucking air that has passed through, a second wall 33 facing the first wall 32, and a spiral peripheral wall connecting the peripheral edges of the first wall 32 and the second wall 33 As shown in FIG. 2, the filter housing 20 has a filter insertion opening 21 that opens in the attachment/detachment direction of the filter 25 (shown in FIG. 1), and a corner provided on the filter insertion opening 21 side. 26, the corner 26 eaves extending outward from the peripheral wall 34 of the scroll housing 30, and the space occupied by the particle sensor 2 rotates from the corner 26, as shown in FIG. It overlaps with the space under the eaves 40 (41, 42) extending along the axial direction of the axis O toward the peripheral wall 34 side.

The vehicle air conditioner 1 has an intake housing 10 at the most upstream side of the HVAC case, as shown in FIG. The intake housing 10 has an inlet 11 . The inlet 11 may be either an outside air inlet or a vehicle interior air inlet. An intake door (not shown) is provided inside the intake housing 10 to change the ratio of the outside air introduced from the outside air introduction port and the inside air introduced from the inside air introduction port.

The scroll housing 30, as shown in FIG. 1, is a part of the HVAC case, houses the impeller 51, and forms an air flow path 35 through which the air generated by the rotation of the impeller 51 flows downstream. do. When the vehicle air conditioner 1 is of the horizontal type, the first wall 32 is the upper wall and the second wall 33 is the lower wall. A suction port 31 is opened in the first wall 32 . A bell mouth is formed around the periphery of the suction port 31 . A motor 52 having a rotation axis O for rotating the impeller 51 is attached to the second wall 33 . Motor 52 is housed in motor housing 50 . It is preferable that the rotation axis O of the motor 52 extends along the vertical direction of the vehicle. As shown in FIG. 2, the peripheral wall 34 includes a spiral wall 34a surrounding the impeller 51 (shown in FIG. 1), a tongue portion 34b connected to the winding start of the spiral wall 34a, and a winding connected to the winding end of the spiral wall 34a. and an end portion 34c. When the impeller 51 is rotated by driving the motor 52 , air is taken into the inlet 11 . The taken-in air passes through the filter 25, is sucked into the impeller 51 from the suction port 31, and flows through the air passage 35 of the scroll housing 30 toward the downstream of the HVAC case.

The filter housing 20 is a portion of the HVAC case on the downstream side of the intake housing 10 and the upstream side of the scroll housing 30, as shown in FIG. Filter housing 20 is configured to hold filter 25 . An example of the filter housing 20 will be described with reference to FIG. 2, illustration of the filter 25 is omitted. In FIG. 2, as an example, when the filter 25 (illustrated in FIG. 1) has a rectangular parallelepiped shape, the filter housing 20 has a rectangular bottom surface portion 23 on which the filter 25 is placed and a top surface portion 22 facing the bottom surface portion 23. , and a pair of side surface portions 24 connecting the pair of mutually facing sides of the bottom surface portion 23 and the top surface portion 22, respectively. showed morphology. It is preferable that the filter insertion opening 21 opens toward the rear of the vehicle. The top surface portion 22 has a square frame shape, and the intake surface of the filter 25 can be seen through the opening of the frame. The bottom portion 23 may be formed separately from the first wall 32 of the scroll housing 30 or may be formed integrally with the first wall 32 . The form in which the bottom surface portion 23 is separate from the first wall 32 is, for example, a rectangular plate having an opening at a portion corresponding to the suction port 31 of the first wall 32, and a spiral first wall. It is placed on the upper surface of the wall 32 . In a form in which the bottom surface portion 23 is integrated with the first wall 32, for example, the bottom surface portion 23 is a rectangular plate having the suction port 31, and the spiral portion around the suction port 31 serves as the first wall 32. form. The pair of side surface portions 24 extend in the attachment/detachment direction of the filter 25 . The attachment/detachment direction of the filter 25 is, for example, along the longitudinal direction of the vehicle.

The corner portions 26 (26a, 26b) are portions of the filter housing 20 that protrude outward from the scroll housing 30 when the filter housing 20 and the scroll housing 30 are viewed from the bottom, as shown in FIG. In FIG. 3, the corners 26 (26a, 26b) are hatched. For example, when the bottom surface portion 23 of the filter housing 20 has a square shape, the filter housing 20 has corner portions 26 (26a, 26b) that are located on the side of the filter insertion opening 21 (shown in FIG. 2) of the vertices of the bottom surface portion 23. A first corner portion 26a surrounded by two sides extending from the left vertex C1 and the upper end side of the peripheral wall 34 of the scroll housing 30 in contact with the bottom portion 23, and a vehicle right vertex of the vertices of the bottom portion 23 on the filter insertion port 21 side. It has a second corner portion 26 b surrounded by two sides extending from C<b>2 and the upper end side of the peripheral wall 34 of the scroll housing 30 in contact with the bottom portion 23 .

The space under the eaves 40 (41, 42) is a space extending directly below the corners 26 (26a, 26b), as shown in FIGS. In FIG. 3, the space under the eaves 40 (41, 42) extends in a direction perpendicular to the plane of FIG. The space 40 (41, 42) under the eaves preferably has a space 41 under the eaves at the first corner 26a and a space 42 under the eaves at the second corner 26b. The space under the eaves 40 (41, 42) includes outer

peripheral spaces

41a, 42a, as shown in FIG. The outer

peripheral spaces

41a and 42a are spaces on the side of the corners 26 (26a and 26b) of a virtual plane obtained by extending the outer wall surface of the second wall 33 so as to be orthogonal to the axial direction of the rotation axis O. The outer

peripheral spaces

41a and 42a can also be said to be spaces adjacent to the outside of the peripheral wall 34 in the under-eaves space 40 (41 and 42).

The particle sensor 2 is a measuring instrument that detects and counts particles in the air. Although the type of particle sensor is not particularly limited, it preferably has a housing 2a and an air intake port 2b provided in the housing 2a for taking in air. The housing 2a is a housing forming the outer shell of the particle sensor, and accommodates a light emitting part (not shown) and a light receiving part (not shown) of the sensor. The air intake port 2b is an opening provided in the housing 2a, and is an opening for taking in air to be detected inside the particle sensor 2. As shown in FIG. The particle sensor 2 preferably has a blower (not shown) for drawing air into the housing 2a. This allows the particle sensor 2 to take in and out air on its own.

Examples of the mounting position of the particle sensor 2 are shown in FIGS. The space occupied by the particle sensor 2 overlaps with the space under the eaves 40 (41, 42). In this embodiment, the space occupied by the particle sensor 2 overlaps with the under-eaves space 40 (41, 42), and the particle sensor 2 is entirely within the under-eaves space 40 (41, 42) (for example, 3 to 7), and a form (not shown) in which part of the particle sensor 2 protrudes from the space under the eaves 40 (41, 42) but the other part is in the space under the eaves 40 (41, 42). contain. The three-dimensional outer shape of the vehicle air conditioner 1 has unevenness. In the space generated by the unevenness, the silhouette of the vehicle air conditioner 1 viewed from above, from the front, from the side, or from the bottom (hereinafter, sometimes simply referred to as "two-dimensional silhouette of the vehicle air conditioner 1"). becomes dead space. Such a space includes an under-eaves space 40 (41, 42). In the present embodiment, by overlapping the space occupied by the particle sensor 2 with the space 40 (41, 42) under the eaves, the particle sensor 2 does not protrude greatly from the two-dimensional silhouette of the vehicle air conditioner 1, so dead space is eliminated. can be effectively used to suppress an increase in the size of the vehicle air conditioner 1 .

In the vehicle air conditioner 1 according to the present embodiment, the particle sensor 2 is preferably accommodated in the space under the eaves 40 (41, 42) as shown in FIGS. Since the space under the eaves 40 (41, 42) is a dead space, the particle sensor 2 can be accommodated in the dead space, thereby further suppressing an increase in size.

In the vehicle air conditioner 1 according to the present embodiment, the particle sensor 2 is a virtual surface obtained by extending the outer wall surface of the second wall 33 in the space 40 (41, 42) under the eaves so as to be orthogonal to the axial direction of the rotation axis O. It is preferable that they are housed in the outer

peripheral spaces

41a, 42a (shown in FIG. 2) on the side of the corners 26 (26a, 26b). Since the space under the eaves 40 (41, 42) is a dead space, the particle sensor 2 can be accommodated in the dead space, thereby further suppressing an increase in size.

In the vehicle air conditioner 1 according to the present embodiment, the scroll housing 30 includes, as shown in FIGS. The filter housing 20 has a first corner 26a adjacent to the motor cooling air introduction chamber 60 as the corners 26 (26a, 26b) and a second corner different from the first corner 26a among the corners. 26b is preferred. The space occupied by the particle sensor 2 overlaps the space 41 under the eaves of the first corner 26a (FIGS. 3 and 4), or overlaps the space 42 under the eaves of the second corner 26b ( 5). Since the space 41 under the eaves of the first corner 26a and the space 42 under the eaves of the second corner 26b face the instrument panel, by providing the particle sensor 2 in these spaces, the particle sensor 2 can be easily removed from the vehicle interior. can be used, and serviceability is further improved.

The motor cooling air introduction chamber 60 communicates with a cooling air branch hole (not shown) provided in the peripheral wall 34, and part of the air flowing through the air flow path 35 is directed to the motor 52 (shown in FIG. 1). It is a space taken in as cooling air for cooling. A cooling port 61 is provided on the bottom surface of the motor cooling air introduction chamber 60 . The cooling port 61 is connected to the motor housing 50 by a connecting member (not shown) such as a hose or pipe, and the air taken into the motor cooling air introduction chamber 60 is sent from the cooling port 61 to the motor housing 50. , cool the motor 52 .

FIG. 3 is a bottom view of the filter housing and the scroll housing, showing a first example of the mounting position of the particle sensor. In the vehicle air conditioner 1 according to the present embodiment, the space occupied by the particle sensor 2 overlaps the space 41 under the eaves of the first corner 26a as shown in FIG. It is attached to the outer surface of the opposing wall 62 of the side wall of the air introduction chamber 60 on the filter attaching/detaching direction side. preferably. Since the attachment/detachment path of the filter can be used to attach/detach the particle sensor 2, serviceability of the particle sensor 2 is further improved. In the example shown in FIG. 3, the attachment and detachment of the particle sensor 2 is performed by removing the glove box of the instrument panel from the vehicle interior, for example, and since the opposite wall 62 is facing, the worker puts his/her hand into the particle sensor 2 to remove the particle sensor 2 from the vehicle. The particle sensor 2 can be removed from the opposing wall 62 by pulling it rearward. Also, the operator can attach the particle sensor 2 to the facing wall 62 by pressing the particle sensor 2 toward the front side of the vehicle.

In this specification, the attachment/detachment direction of the particle sensor 2 is the direction in which the particle sensor 2 is moved away from or closer to the mounting surface (the outer surface of the opposing wall 62 in FIG. 3). In the example shown in FIG. 3, the attachment/detachment direction of the particle sensor 2 is the longitudinal direction of the vehicle. When the particle sensor 2 is attached or detached, the particle sensor 2 is slid on the mounting surface (the outer surface of the facing wall 62 in FIG. 3) in the lateral direction or the vertical direction of the vehicle to engage the particle sensor 2 with the mounting surface. or disengage. The moving direction of the particle sensor 2 for engaging or disengaging the particle sensor 2 with respect to such mounting surface is not called the attachment/detachment direction. The attachment/detachment direction of the particle sensor 2 is the moving direction of the particle sensor 2 before the particle sensor 2 is engaged or after the engagement is released. The concept of the attachment/detachment direction is the same for FIGS. 4 to 7 as well.

In the configuration in which the particle sensor 2 is attached to the opposing wall 62, the air intake port 2b of the particle sensor 2 opens in a wall of the housing 2a other than the wall facing the opposing wall 62, as shown in FIG. preferably. In this case, the particle sensor 2 takes in air in the vicinity of the particle sensor in the passenger compartment.

FIG. 4 is a bottom view of the filter housing and the scroll housing, showing a second example of the mounting position of the particle sensor. As shown in FIG. 4, the vehicle air conditioner 1 according to the present embodiment includes a blower blowout duct 4 connected to the downstream side of the scroll housing 30, a register 3 attached to the outer wall of the blower blowout duct 4, and a register 3 The space occupied by the particle sensor 2 overlaps the space 41 under the eaves of the first corner 26 a, and the particle sensor 2 is located in the motor cooling air introduction chamber 60 The particle sensor 2 is attached to the outer surface of the side wall 63 facing the register service route R, and the direction of attachment and detachment of the particle sensor 2 with respect to the side wall 63 is preferably along the direction transverse to the register service route R. Since the register service route R can be used for attachment and detachment of the particle sensor 2, serviceability of the particle sensor 2 is further improved.

The blower blowout duct 4 is a portion that connects the scroll housing 30 and the air conditioning housing (not shown). The air conditioning housing (not shown) is a part of the HVAC case that controls the temperature of the air drawn in by the impeller 51 and blows it into the vehicle interior, and may accommodate an evaporator (not shown) inside. The resistor 3 is a device that adjusts the amount of power input to the motor 52 (shown in FIG. 1) of the impeller 51 . The resistor 3 is electrically connected to the motor 52 and incorporates a plurality of resistors having a predetermined resistance value. By selecting which resistors in resistor 3 are energized by a given controller, the rotational speed of impeller 51 can be adjusted to the desired speed. The register service route R is in the space between the outer wall of the blower blowout duct 4 and the instrument panel, and is a space in which an operator works when attaching or detaching the register 3 from the vehicle interior. The direction across the register service route R is, for example, the lateral direction of the vehicle. In the example shown in FIG. 4, the attachment and detachment of the particle sensor 2 is performed by, for example, removing the glove box of the instrument panel from the vehicle interior, and since the register service route R is facing, the worker puts his hand into the register service route R. The particle sensor 2 can be removed from the side wall 63 by pulling the particle sensor 2 toward the left side of the vehicle. Also, the operator can attach the particle sensor 2 to the side wall 63 by inserting his hand into the register service route R and pushing the particle sensor 2 toward the right side of the vehicle. Also, the attachment and detachment of the particle sensor 2 may be carried out by reaching into the register service route R from under the floor of the vehicle.

In the configuration in which the particle sensor 2 is attached to the side wall 63, the air intake port 2b of the particle sensor 2 preferably opens in a wall other than the wall facing the side wall 63 of the housing 2a. In this case, the particle sensor 2 takes in air in the vicinity of the particle sensor from inside the vehicle.

FIG. 5 is a bottom view of the filter housing and the scroll housing, showing a third example of the mounting position of the particle sensor. In the vehicle air conditioner 1 according to this embodiment, as shown in FIG. It is preferable that the attachment/detachment direction of the particle sensor 2 with respect to the peripheral wall 34 is along the attachment/detachment direction of the filter 25 (shown in FIG. 1). In the example shown in FIG. 5, the attachment and detachment of the particle sensor 2 is performed by inserting the operator's hand into the particle sensor 2 since the second corner 26b is facing when the glove box of the instrument panel is removed from the passenger compartment. The particle sensor 2 can be removed from the peripheral wall 34 by pulling it toward the rear of the vehicle. Also, the operator can attach the particle sensor 2 to the peripheral wall 34 by pressing the particle sensor 2 toward the front side of the vehicle.

In the configuration in which the particle sensor 2 is attached to the peripheral wall 34, the air intake 2b of the particle sensor 2 preferably opens in a wall other than the wall facing the peripheral wall 34 among the walls of the housing 2a. In this case, the particle sensor 2 takes in air in the vicinity of the particle sensor in the passenger compartment.

FIG. 6 is a view of the filter housing and the scroll housing as viewed obliquely from below, showing a fourth example of the mounting position of the particle sensor. FIG. 7 is a view of the filter housing and the scroll housing as seen obliquely from below, showing a fifth example of the mounting position of the particle sensor. In the vehicle air conditioner 1 according to this embodiment, the particle sensor 2 is attached to the bottom wall 23 of the corner 26 (26a, 26b) as shown in FIG. The attachment/detachment direction with respect to the wall 23 is preferably along the axial direction of the rotation axis O of the bottom wall 23 or along a direction inclined with respect to the axial direction of the rotation axis O of the bottom wall 23 . The bottom wall 23 of the corners 26 (26a, 26b) matches the bottom wall 23 of the filter housing 20, so they are given the same reference numerals. In the example shown in FIGS. 6 and 7, the attachment and detachment of the particle sensor 2, for example, when the glove box of the instrument panel is removed from the vehicle interior, since the first corner 26a and the second corner 26b are facing, the operator The particle sensor 2 can be removed from the bottom wall 23 by pulling the particle sensor 2 toward the lower side of the vehicle. Also, the operator can attach the particle sensor 2 to the bottom wall 23 by pressing the particle sensor 2 upward of the vehicle. The attachment/detachment direction of the particle sensor 2 may be downward with respect to the bottom wall 23, may be perpendicular to the bottom wall 23, or may be inclined from the perpendicular direction. 6 and 7 do not show the motor cooling air introduction chamber 60 (for example, shown in FIG. 3), but in FIGS. good too.

In the configuration in which the particle sensor 2 is attached to the bottom wall 23, the air intake port 2b of the particle sensor 2 preferably opens to a wall other than the wall facing the bottom wall 23 of the housing 2a. In this case, the particle sensor 2 takes in air in the vicinity of the particle sensor in the passenger compartment.

1 Vehicle air conditioner 2 Particle sensor 2a Housing 2b Air intake 3 Register 4 Blower outlet duct 10 Intake housing 11 Introduction port 20 Filter housing 21 Filter insertion port 22 Top surface 23 Bottom surface and corner bottom wall 24 Side surface 25 filter 26 corner 26a first corner 26b second corner 30 scroll housing 31 suction port 32 first wall 33 second wall 34 peripheral wall

34a spiral wall 34b tongue

34c winding end 35 air flow path 40 (41, 42 ) Under

eaves space

41a, 42a Peripheral space 50 Motor housing 51 Impeller 52 Motor 60 Motor cooling air introduction chamber 61 Cooling port 62 Opposing wall 63 Side wall O Rotational axis R Register service path

Claims

A scroll housing (30) that houses an impeller (51) and has air flowing through it, and a filter housing (20) that is connected to the upstream side of the air flow of the scroll housing (30) and houses a filter (25). , a particle sensor (2), and a motor (52) having a rotation shaft (O) for rotationally driving the impeller (51),
The scroll housing (30) includes a first wall (32) having a suction port (31) for sucking air that has passed through the filter (25), and a second wall (33) facing the first wall (32). and a spiral peripheral wall (34) connecting peripheral edges of the first wall (32) and the second wall (33),
The filter housing (20) has a filter insertion opening (21) that opens in the attachment/detachment direction of the filter (25), and a corner (26) provided on the side of the filter insertion opening (21), The corner portion (26) extends like eaves outside the peripheral wall (34) of the scroll housing (30),
The space occupied by the particle sensor (2) overlaps with the space under the eaves (40 (41, 42)) extending from the corner (26) toward the peripheral wall (34) along the axial direction of the rotating shaft (O). A vehicle air conditioner characterized by:
The vehicle air conditioner according to claim 1, wherein the particle sensor (2) is housed in the space under the eaves (40 (41, 42)).
The particle sensor (2) is a virtual surface obtained by extending the outer wall surface of the second wall (33) in the space under the eaves (40 (41, 42)) so as to be orthogonal to the axial direction of the rotation axis (O). 3. The vehicle air conditioner according to claim 1, wherein the outer peripheral space (41a, 42a) is located on the corner (26) side of the air conditioner.
The scroll housing (30) has a tongue (34b) and a motor cooling air introduction chamber (60) provided outside the tongue (34b),
The filter housing (20) includes a first corner (26a) adjacent to the motor cooling air introduction chamber (60) as the corner (26) and the first corner (26) of the corners (26). a second corner (26b) different from 26a);
The space occupied by the particle sensor (2) is the space under the eaves (41) at the first corner (26a) or the space under the eaves at the second corner (26b) in the space under the eaves (40 (41, 42)). The vehicle air conditioner according to any one of claims 1 to 3, wherein (42) overlaps.
The space occupied by the particle sensor (2) overlaps the space under the eaves (41) of the first corner (26a),
The particle sensor (2) is attached to the outer surface of the opposite wall (62) of the side walls of the motor cooling air introduction chamber (60) facing the direction in which the filter is attached and removed,
5. The vehicle air conditioner according to claim 4, wherein a direction in which the particle sensor (2) is attached to and detached from the opposing wall (62) is along a direction in which the filter (25) is attached and detached.
A vehicle air conditioner (1) comprises a blower blowout duct (4) connected to the downstream side of the scroll housing (30), a register (3) attached to the outer wall of the blower blowout duct (4), and the register (3) further comprising a register service path (R) for attaching and detaching,
The space occupied by the particle sensor (2) overlaps the space under the eaves (41) of the first corner (26a),
The particle sensor (2) is attached to the outer surface of a side wall (63) of the side walls of the motor cooling air introduction chamber (60) facing the register service route (R),
5. The vehicle air conditioner according to claim 4, wherein the particle sensor is attached to and detached from the side wall (63) in a direction crossing the register service route (R).
The space occupied by the particle sensor (2) overlaps the space under the eaves (42) of the second corner (26b),
said particle sensor (2) is attached to the outer surface of said peripheral wall (34) of said scroll housing (30),
5. The vehicle air conditioner according to claim 4, wherein a direction in which the particle sensor (2) is attached to and detached from the peripheral wall (34) is along a direction in which the filter (25) is attached and detached.
said particle sensor (2) is attached to the bottom wall (23) of said corner (26),
The attachment/detachment direction of the particle sensor (2) with respect to the bottom wall (23) is along the axial direction of the rotation axis (O) of the bottom wall (23), or the rotation axis of the bottom wall (23). 5. The vehicle air conditioner according to claim 4, wherein the direction is inclined with respect to the axial direction of (O).