CN111372799B

CN111372799B - Air conditioner for vehicle

Info

Publication number: CN111372799B
Application number: CN201880075441.4A
Authority: CN
Inventors: 七间豊; 吉崎久善; 厚见信几; 林直人
Original assignee: Valeo Japan Co Ltd
Current assignee: Valeo Japan Co Ltd
Priority date: 2017-11-24
Filing date: 2018-11-20
Publication date: 2022-11-22
Anticipated expiration: 2038-11-20
Also published as: JP6938347B2; WO2019102975A1; CN111372799A; JP2019093972A

Abstract

The invention provides an air conditioner (1, 1A, 1B). Rainwater and the like in the upper duct can be prevented from staying in the air blowing section, and the air blowing section and the air conditioning unit can be easily assembled. An air conditioner (1, 1A, 1B) is provided with an air supply unit (10) and an air conditioning unit (100), wherein the air supply unit (10) has a volute casing (50) and an air supply unit partition plate (20), the air conditioning unit (100) has an air conditioning case (150), a lower layer connecting end (192) of a connecting portion (151) of the air conditioning case (150) is positioned on the upstream side of a downstream side end edge (20 d) of the air supply unit partition plate (20) in an air flow from a fitting portion (51) toward a cooling heat exchanger (110), and an upper layer fitting end (91) of the fitting portion (51) of the volute casing (50) is positioned at the same position as the downstream side end edge (20 d) or on the downstream side of the downstream side end edge (20 d).

Description

Air conditioner for vehicle

Technical Field

The present invention relates to a dual-layer flow type air conditioner for a vehicle.

Background

Conventionally, a dual-flow type air conditioner is known which includes a dual-flow type blower unit for sucking and blowing outside air (outside air of a vehicle) and/or inside air (inside air of a vehicle), and an air conditioning unit connected to the blower unit (see, for example, patent document 1). The double-layer flow type blower unit divides the inner space into an upper layer channel and a lower layer channel through a partition plate. The air conditioning apparatus using such a double-flow blower unit can be operated not only in an internal air mode in which the internal air is sucked into the upper and lower ducts but also in an external air mode in which the external air is sucked into the upper and lower ducts and in an internal and external air double-flow mode in which the external air is sucked into the upper duct and the internal air is sucked into the lower duct.

However, such a blower unit may draw in rainwater and the like from the outside of the vehicle together with outside air. Rainwater and the like sucked into the blower unit move together with outside air. Therefore, in both the outside air mode and the inside-outside air double-layer flow mode, the probability of rainwater or the like intruding into the upper-layer passage through which the outside air flows is high. In order to discharge rainwater and the like sucked into the upper duct of the blower unit to the outside of the air conditioning apparatus, for example, in patent document 1, a plurality of communication holes are provided in a partition plate that vertically partitions an internal space of the blower unit, and rainwater and the like in the upper duct are caused to flow into the lower duct and flow into the air conditioning unit from the lower duct. Then, the rainwater flowing into the air conditioning unit is discharged from a drain port provided at the bottom of the air conditioning unit.

However, the lower duct of the blower unit is not limited to a configuration in which rainwater or the like flows into the air conditioning unit. For example, as in patent document 2, depending on the layout of the vehicle, the air outlet of the blower unit may be inclined upward toward the air conditioning unit. In this case, rainwater and the like in the lower passage may not flow into the air conditioning unit but stay in the blower unit.

Therefore, it is desirable to design a blower unit and an air conditioning unit that can prevent rainwater or the like sucked into an upper duct from staying in the blower unit regardless of the blowing direction of the blower unit (whether or not the bottom surface of the lower duct of the blower unit is configured to have an upward slope). In addition, it is generally desirable to design a blower unit and an air conditioning unit that are easy to assemble.

Documents of the prior art

Patent document

Patent document 1 Japanese patent laid-open No. 2015-67260

Patent document 2 Japanese patent application laid-open No. H10-16534

Disclosure of Invention

Technical problem to be solved by the invention

The present invention provides an air conditioner of a double-layer flow type, capable of preventing rainwater and the like sucked into an upper passage from staying in a blower unit (air blowing unit) regardless of the blowing direction of the blower unit (air blowing unit), wherein the assembly work of the blower unit (air blowing unit) and an air conditioner unit (air conditioning unit) is easy.

Technical scheme for solving technical problem

According to a preferred embodiment of the present invention, there is provided an air conditioner for a vehicle, including an air blowing unit and an air conditioning unit, the air blowing unit including: the air conditioner further includes a blower partition plate dividing a region between an inner peripheral surface of the scroll casing and an outer peripheral surface of the impeller and an inner space of the fitting portion into an upper air flow path and a lower air flow path, a downstream end portion of the fitting portion in an air flow from the fitting portion toward the cooling heat exchanger includes an upper layer fitting end portion located above the blower partition plate and a lower layer fitting end portion located below the blower partition plate, the connecting portion includes an upper layer connecting end portion connected to the upper layer fitting end portion and a lower layer connecting end portion connected to the lower layer fitting end portion, and the lower layer connecting end portion is located on a downstream side of the partition plate in the air flow from the fitting portion toward the cooling heat exchanger.

Effects of the invention

According to the above-described embodiments of the present invention, there is provided an air conditioner of a double-flow type in which rainwater and the like sucked into an upper duct can be prevented from staying in a blowing section regardless of the blowing direction of the blowing section, and in which the assembling work of the blowing section and an air conditioning section is easy.

Drawings

Fig. 1 is a sectional view schematically showing the configuration of a blower and an air conditioner of an air conditioner according to a first embodiment of the present invention.

Fig. 2 is a perspective view schematically showing a connection portion of the volute casing and the blower partition of the air conditioner casing shown in fig. 1.

Fig. 3 is a plan view schematically showing a lower scroll member, a lower air conditioning casing member, a blowing section partition plate, and an air conditioning section partition plate of the air conditioner shown in fig. 1.

Fig. 4 is a perspective view corresponding to fig. 2, schematically showing a volute casing, a blower partition plate, and a connecting portion of an air conditioning casing of an air conditioning apparatus according to a modification of the first embodiment of the present invention.

Fig. 5 is a view corresponding to fig. 3, and is a plan view schematically showing the lower scroll member, the lower air conditioning casing member, the blowing unit partition plate, and the air conditioning unit partition plate shown in fig. 4.

Fig. 6 is a perspective view corresponding to fig. 2, schematically showing a scroll casing, a blower partition plate, and a connection portion of an air conditioning casing of an air conditioning apparatus according to another modification of the first embodiment of the present invention.

Fig. 7 is a cross-sectional view corresponding to fig. 1, schematically showing the configuration of a blower and an air conditioner of an air conditioner according to a second embodiment of the present invention.

Fig. 8 is a perspective view corresponding to fig. 2, schematically showing a scroll casing, a blower partition plate, and a connecting portion of an air conditioning casing of the air conditioning apparatus shown in fig. 7.

Fig. 9 is a sectional view taken along the extension direction of the water leakage preventing plate, schematically showing the water leakage preventing plate provided on the scroll housing shown in fig. 8.

Fig. 10 is a cross-sectional view corresponding to fig. 1, schematically showing the configuration of a blower and an air conditioner in an air conditioner according to a third embodiment of the present invention.

Fig. 11 is a plan view corresponding to fig. 3, schematically showing a lower scroll member, a lower air conditioning casing member, a blowing section partition plate, and an air conditioning section partition plate of the air conditioner shown in fig. 10.

Detailed Description

< first embodiment >

A first embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a sectional view schematically showing the structure of an air conditioner for a vehicle. Fig. 2 is a perspective view schematically showing a connection portion between the scroll casing, the blower partition plate, and the air conditioning casing of the air conditioning apparatus shown in fig. 1, and is a view for explaining an assembly direction of the scroll casing and the air conditioning casing. Fig. 3 is a plan view schematically showing the configuration of the lower scroll member, the lower air conditioning casing member, the blowing unit partition plate, and the air conditioning unit partition plate of the air conditioning apparatus shown in fig. 1. In fig. 1 to 3 and fig. 4 to 11 to be described later, in order to make the drawings more clear, the shapes of the scroll casing, the partition plate, and the air conditioning casing are simplified, and in fig. 2 to 6, 8 to 9, and 11, the respective blowing passages of the air conditioning casing are not shown.

The air conditioner 1 for a vehicle according to the present embodiment is a double-flow air conditioner, and includes an air blowing unit 10 and an air conditioning unit 100 connected to the air blowing unit 10. The air blowing unit 10 forms an air flow, and the air conditioning unit 100 dehumidifies air from the air blowing unit 10. The air-conditioning unit 100 is provided with an outlet 131 for discharging water generated by dehumidification.

First, the air blowing unit 10 will be described with reference to fig. 1. The air blowing unit 10 shown in fig. 1 is a centrifugal air blowing unit of a single suction type. The blower 10 has an impeller 5. The impeller 5 has a plurality of blades 6 arranged in a circumferential direction to form a blade row 6A in an outer peripheral portion thereof. The impeller 5 is driven by the motor 13 to rotate around the rotation axis Ax, and blows out air drawn into a space radially inside the blade row of the impeller 5 from an axially upper side (one axial end side) in a centrifugal direction. Reference numeral 9 is an air flow deflecting member formed integrally with the impeller 5. The air flow deflecting member 9 is sometimes also referred to as a cone. The airflow deflecting member 9 is connected to a fixing portion 11 provided at a central portion of the impeller 5 that is rotationally driven, and the impeller 5 is rotatably supported by a motor 13 by fixing the fixing portion 11 to a rotary shaft 12 of the motor 13.

In this specification, for convenience of description, the direction of the rotation axis Ax is referred to as an axial direction. The axial direction coincides with the vertical direction in fig. 1, but therefore, when the air conditioner is actually mounted on a vehicle, the vertical direction of each portion of the air conditioner is not limited to coincide with the direction of the rotation axis Ax. In addition, in this specification, unless otherwise noted, a direction of a radius of a circle drawn on a plane orthogonal to the rotation axis Ax with an arbitrary point on the rotation axis Ax as a center is referred to as a radial direction, and a circumferential direction of the circle is referred to as a circumferential direction or a circumferential direction.

The impeller 5 is accommodated in a substantially cylindrical inner space of the scroll housing 50. The scroll housing 50 has an inlet port 22 opened axially upward and a fitting portion 51 opened circumferentially. As shown in fig. 1 and 2, the scroll housing 50 includes an upper scroll member 61 and a lower scroll member 62 positioned below the upper scroll member 61. The lower scroll member 62 defines an inner space for accommodating the impeller 5 and the fitting portion 51 together with the upper scroll member 61.

The blower 10 further includes a separation tube 30 inserted into the scroll housing 50 and a blower partition plate 20 extending radially inward from the outer peripheral wall 50A of the scroll housing 50.

The separation cylinder 30 is inserted into the scroll housing 50 through the suction port 22. The separation tube 30 extends axially through the suction port 22 from the center portion 31 to the lower portion 32 to a space radially inside the blade row 6A of the impeller 5. The upper portion 33 of the separation cylinder 30 is located outside the scroll housing 50 (axially above the suction port 22). The lower end of the separation tube 30 is located in a space radially inside the blade row 6A of the impeller 5.

The upper portion 33 of the separation barrel 30 is generally rectangular in cross-section (meaning a cross-section in a direction orthogonal to the axis of rotation Ax). The central portion 31 of the separator barrel 30 is circular (or substantially circular) in cross-section. The cross-sectional shape of the separator bowl 30 smoothly transitions from rectangular to circular as it approaches the central portion 31 from the upper portion 33. The lower portion 32 (outlet-side end portion) of the separation tube 30 has a trumpet shape whose diameter is enlarged as it approaches the lower end, and the lower end is circular. In the illustrated example, the separation tube 30 is curved from the central portion 31 to the upper portion 33 thereof, but the invention is not limited thereto.

The entire separation cylinder 30 may be integrally molded by resin injection molding. Conversely, the inlet-side end portion (upper portion) 33 of the separation tube 30 and the center portion 31 and the outlet-side end portion (lower portion) 32 of the separation tube 30 may be molded separately and then connected to each other by, for example, bonding, fitting, or the like.

The separation tube 30 divides the flow of air drawn into the scroll housing 50 into a first air flow flowing into the upper half of the vane 6 through the outside of the separation tube 30 and a second air flow flowing into the lower half of the vane 6 through the inside of the separation tube 30. The first air flow passes through an annular region of the suction port 22 of the scroll housing 50 outside the outer peripheral surface of the separation cylinder 30, and flows into the upper half (a portion close to the suction port 22) of the blade row 6A of the impeller 5. The second air flow enters the inside of the separation tube 30 from the upper end of the separation tube 30, and flows into the lower half (the portion away from the suction port 22) of the blade row 6A of the impeller 5. Therefore, an annular region outside the outer peripheral surface of the separation cylinder 30 in the suction port 22 of the scroll housing 50 may be regarded as a first suction port of the scroll housing 50, and an opening at the upper end of the separation cylinder 30 may be regarded as a second suction port of the scroll housing 50.

The blower partition plate 20 vertically (axially) divides the region between the inner peripheral surface of the volute casing 50 and the outer peripheral surface of the impeller 5 in the internal space of the volute casing 50 and the internal space of the fitting portion 51 to form an upper air flow passage 10A and a lower air flow passage 10B extending in the circumferential direction along the inner peripheral surface of the volute casing 50. The first air flow that flows into the upper half of the blade 6 through the outside of the separation cylinder 30 then flows into the upper side air flow path 10A. In addition, the second air flow that has flowed into the lower half of the vane 6 through the inside of the separation cylinder 30 then flows into the lower air flow path 10B. The blower partition plate 20 is a plate-like member formed separately from the upper scroll member 61 and the lower scroll member 62. As can be understood from fig. 2, the blower partition plate 20 is disposed between the upper scroll member 61 and the lower scroll member 62, and is fitted to the upper scroll member 61 and the lower scroll member 62 at the edge portions thereof.

The air blowing unit 10 described above may suck rainwater or the like from the outside of the vehicle together with outside air. In order to introduce these rainwater and the like into the air conditioning part 100 and discharge them from the discharge port 131 thereof, as will be described later, the blower partition plate 20 of the present embodiment extends to above the lower blower duct 100B of the air conditioning part 100.

An air intake casing 70 is connected to the scroll casing 50. The scroll housing 50 and the air intake housing 70 may be integrally formed, or may be connected by a method such as screw fixing, bonding, or fitting after being separately manufactured.

The air intake casing 70 has a first opening (outside air introduction port) 75, a second opening (inside air introduction port) 76, and a third opening (inside air introduction port) 77. The first opening 75 is connected to or in the vicinity of an outlet (not shown) of an outside air introduction duct provided in the vehicle, and can introduce outside air (air taken in from the outside of the vehicle) into the air intake casing 70 through the first opening 75. The second opening 76 and the third opening 77 are opened in the vehicle interior, and allow the inside air (vehicle interior air) to be introduced into the air intake casing 70.

A first switching door 73 and a second switching door 74 in the form of so-called swing doors are provided in the air intake casing 70. The first switching door 73 is rotatable about a rotation shaft 73R extending in a horizontal direction (a direction vertical to the sheet of fig. 1) to close the first opening 75 or the second opening 76. The second switching door 74 may be rotated about a rotation shaft 74R extending in the horizontal direction to close the third opening 77.

The first switching door 73 is movable between a first position (refer to fig. 1) that opens the first opening 75 and closes the second opening 76, and a second position (not shown) that closes the first opening 75 and opens the second opening 76. The second switching door 74 is movable between a first position (see fig. 1) for opening the third opening 77 and a second position (not shown) for closing the third opening 77.

A filter 79 is provided in the air intake housing 70 between the first to third openings 75 to 77 and an inlet opening provided at the upper end of the upper portion 33 of the separation cylinder 30, and the filter 79 removes contaminants such as dust and particles and odor contained in the air. The filter 79 is provided on the inlet opening side of the separation drum 30 with respect to the operation ranges of the first switching door 73 and the second switching door 74.

Next, the air conditioning unit will be explained. As shown in fig. 1, the air conditioning part 100 has an air conditioning case 150. The air conditioning case 150 has a connection portion 151, the connection portion 151 forms an opening portion connected to the fitting portion 51 of the scroll casing 50, and the air flow formed by the blowing portion 10 flows into the air conditioning case 150. A cooling heat exchanger (evaporator) 110 and a heating heat exchanger (heating core) 140 are disposed in the air conditioning casing 150. The cooling heat exchanger 110 is disposed upstream of the heating heat exchanger 140 in the air flow from the air blowing unit 10.

In the illustrated example, the air conditioning case 150 has an upper air conditioning case member 161 and a lower air conditioning case member 162 located below the upper air conditioning case member 161. The lower air conditioning casing member 162 defines an internal space for accommodating the cooling heat exchanger 110 and the heating heat exchanger 140 together with the upper air conditioning casing member 161. The upper air conditioning casing member 161 is connected to the upper scroll member 61 (therefore, the upper scroll member 61 is fitted to the upper air conditioning casing member 161). The lower air conditioning casing member 162 is connected to the lower scroll member 62 (therefore, the lower scroll member 62 is fitted to the lower air conditioning casing member 162). It should be noted that flanges may be provided near the ends (upper-stage fitting end 91 and lower-stage fitting end 92 to be described later) of the fitting portions 51 of the

scroll members

61 and 62 on the air-

conditioning casing members

161 and 162 side, respectively. Further, flanges may be provided near ends (upper layer connection end 191 and lower layer connection end 192 to be described later) of the connection portion 151 of the air

conditioning casing members

161 and 162 on the

scroll members

61 and 62 side, respectively. Further, the

scroll members

61, 62 and the air-

conditioning case members

161, 162 may be assembled by connecting these flanges to each other with bolts or the like.

The internal space of the air conditioning casing 150 is also divided into an upper air supply duct 100A and a lower air supply duct 100B along the upper and lower sides. An upper portion 110A of the cooling heat exchanger 110 is positioned in the upper air blowing passage 100A, and a lower portion 110B of the cooling heat exchanger 110 is positioned in the lower air blowing duct 100B. The cooling heat exchanger 110 extracts heat from the air passing therethrough, and when the humidity of the air is high, reduces the humidity of the air by condensing moisture in the air. An upper portion 140A of the heating heat exchanger 140 is positioned in the upper air blowing duct 100A, and a lower portion 140B of the heating heat exchanger 140 is positioned in the lower air blowing duct 100B. The heating heat exchanger 140 heats air passing therethrough.

As shown in fig. 1, a drain region 130 is provided in a bottom portion of the air conditioning casing 150 (i.e., the lower air conditioning casing member 162) in order to drain condensed water condensed in the cooling heat exchanger 110 to the outside of the air conditioning apparatus 1. The drain region 130 is provided at a position below the cooling heat exchanger 110. The drain region 130 has a drain port 131 communicating the inside and outside of the air-conditioning case 150 and discharging the condensed water, and an inclined surface 132 inclined downward toward the drain port 131 so as to guide the condensed water to the drain port 131. As can be understood from fig. 1, the drain region 130 extends to the upstream side of the cooling heat exchanger 110 in the air flow from the blower 10.

Here, as described above, the air blowing unit 10 may suck rainwater and the like from the outside of the vehicle together with outside air. Rainwater and the like sucked into the air blowing unit 10 move together with outside air. Therefore, in two of the three operation modes of the air conditioner 1 which will be described later, the probability of rainwater or the like invading into the upper passage through which the outside air flows is high.

In order to introduce rainwater and the like W that have entered the upper air flow path 10A into the air conditioning unit 100 and discharge the rainwater and the like from the discharge port 131, the blower partition 20 of the present embodiment extends from above the lower air flow path 10B of the blower 10 to above the lower blower duct 100B of the air conditioning unit 100. That is, the downstream end 20d of the blower partition 20 in the air flow from the fitting portion 51 to the cooling heat exchanger 110 overlaps the lower blower duct 100B when viewed in the direction from the upper air flow path 10A and the upper blower duct 100A to the lower air flow path 10B and the lower blower duct 100B. This allows rainwater or the like W that has entered the upper air flow path 10A of the blower 10 to be guided to the lower blower duct 100B of the air conditioning unit 100 regardless of the blowing direction of the blower 10 (regardless of whether the bottom surface of the lower air flow path 10B is inclined upward). That is, rainwater or the like W guided to the upper side of the lower blowing duct 100B by the blowing portion partition plate 20 can fall to the lower blowing duct 100B at the downstream side end edge 20d of the blowing portion partition plate 20. If rainwater or the like W can be guided to the lower air blowing duct 100B, the risk of rainwater or the like W staying in the air blowing unit 10 is reduced, and rainwater or the like W is easily discharged from the discharge port 131 of the air conditioning unit 100. By using the seamless plate 20, rainwater or the like W is guided, and the rainwater or the like W is unlikely to leak from the upper air flow path 10A of the air blowing unit 10 to the lower air flow path 10B before reaching the upper side of the lower air blowing duct 100B of the air conditioning unit 100.

In the illustrated example, the blower partition 20 extends above the drain region 130 of the air conditioner 100. That is, the downstream end edge 20d of the blower partition 20 is positioned so as to overlap the drain region 130 as viewed in the direction from the upper air flow path 10A and the upper blower duct 100A toward the lower air flow path 10B and the lower blower duct 100B. Therefore, the blower partition 20 can guide the rainwater and the like W entering the upper air flow path 10A to the drain region 130 regardless of the shape of the lower air flow path 10B and the lower blower duct 100B and the blowing direction of the blower 10. Then, the rainwater and the like W flowing into the drainage region 130 are guided to the discharge port 131 by the inclined surface 132 inclined downward toward the discharge port 131, and are discharged to the outside of the air conditioner 1 through the discharge port 131.

The upper surface 20S of the blower partition plate 20 is substantially horizontal or inclined downward from a portion corresponding to the winding end 50e on the inner peripheral surface of the scroll housing 50 to the downstream end edge 20d of the blower partition plate 20. This makes it easy to guide the rainwater or the like W entering the upper air flow path 10A to the downstream end edge 20d of the air feeder partition 20, that is, the lower air duct 100B of the air conditioning unit 100. Further, it is desirable that the air conditioner 1 for a vehicle is mounted on a vehicle, and the blower partition plate 20 is inclined downward up to the downstream side end edge 20d in a state where the vehicle is on a substantially horizontal road surface. In a state of being mounted on a vehicle, rainwater and the like W that have entered the upper layer can be discharged to the outside of the air conditioner 1. More desirably, even in a state where the vehicle is on an inclined road surface, it is inclined downward. Rainwater and the like W that have entered the upper layer can be more reliably discharged to the outside of the air conditioning apparatus 1.

However, it is desirable to design the air blowing unit 10 and the air conditioning unit 100 so that the assembling work is easy. Specifically, it is desirable that one of the blower 10 and the air conditioner 100 can be connected to the vehicle from a plurality of directions. However, if the blower partition plate protrudes from the fitting portion of the blower, the blower partition plate protruding from the fitting portion needs to be inserted into the connecting portion of the air-conditioning unit in the assembly work of the blower and the air-conditioning unit. Therefore, the assembling direction of the air blowing unit and the air conditioning unit is defined as the direction in which the air blowing unit partition plate protrudes from the fitting unit. Here, the assembling work of the blower unit 10 and the air conditioner 100 may be performed in a limited space in the vehicle or before the air conditioner is mounted on the vehicle. However, in any of the processes, if the assembly direction of the blower unit 10 and the air conditioner unit 100 is limited to one direction, it is difficult to perform the assembly operation, and there is a possibility that the productivity is lowered.

The air blowing unit 10 and the air conditioning unit 100 of the present embodiment are directed to allowing the assembly work of the air blowing unit 10 and the air conditioning unit 100 to be performed from a plurality of directions even if the air blowing unit partition plate 20 extends above the lower air duct 100B of the air conditioning unit 100 as described above. In the example shown in fig. 1 to 3, the blowing section 10 and the air conditioning section 100 are configured such that the fitting section 51 and the connection section 151 can be connected at least in a direction D1 extending from the blowing section diaphragm 20 from the lower air passage 10B of the blowing section 10, a direction D2 parallel to the downstream side end edge 20D of the blowing section diaphragm 20, and a vertical direction D3 (the connection section 151 is connected from below the fitting section 51, or the fitting section 51 is connected from above the connection section 151). The configuration of the air blowing unit 10 and the air conditioning unit 100 (particularly, the configuration of the fitting unit 51 and the connection unit 151) will be described in detail below.

First, in the air flow from the fitting portion 51 of the blower 10 toward the cooling heat exchanger 110, the downstream end of the fitting portion 51 has an upper fitting end 91 located above the blower partition plate 20 and a lower fitting end 92 located below the blower partition plate 20. In the illustrated example, the upper-stage fitting end 91 is a downstream-side end of the upper scroll member 61 in the airflow at a position corresponding to the fitting portion 51. The lower-stage fitting end 92 is a downstream end of the lower scroll member 62 in the airflow at a position corresponding to the fitting portion 51.

The connection portion 151 of the air-conditioning unit 100 has an upper connection end 191 connected to the upper fitting end 91 and a lower connection end 192 connected to the lower fitting end 92. In the illustrated example, the upper-layer fitting end 91 is an upstream end of the upper air-conditioning casing member 161 in the air flow at a position corresponding to the connection portion 151. The lower connecting end 192 is an upstream end of the lower air conditioning casing member 162 in the air flow at a position corresponding to the connecting portion 151.

In order to assemble the air blowing unit 10 and the air conditioning unit 100 from a plurality of directions, as shown in fig. 1 and 2, the fitting portion 51 of the air blowing unit 10 and the connection portion 151 of the air conditioning unit 100 are formed as follows. That is, in the air flow from the fitting portion 51 toward the cooling heat exchanger 110, the lower layer connecting end 192 is located on the upstream side of the downstream end edge 20d of the blower partition 20, and the upper layer fitting end 91 is located at the same position as the downstream end edge 20d. In other words, in the air flow, the portion of the upper scroll member 61 corresponding to the fitting portion 51 extends to the downstream end edge 20d of the air feeder partition plate 20 on the downstream side of the portion of the lower scroll member 62 corresponding to the fitting portion 51. Also, an upper air conditioning casing member 161 is formed corresponding to such an upper scroll member 61.

In the example shown in fig. 1 to 3, the lower fitting end portion 92 extends in parallel with the downstream side end edge 20d of the blower partition plate 20 as viewed in the direction from the upper air flow path 10A toward the lower air flow path 10B (see fig. 3).

In the relation with the blowing section diaphragm 20, by configuring the fitting section 51 and the connection section 151 as described above, the assembling work of the blowing section 10 and the air-conditioning section 100 is performed in a manner of connecting the fitting section 51 and the connection section 151 at least in a direction D1 of extending from the blowing section diaphragm 20 from the lower air flow passage 10B of the blowing section 10, a direction D2 parallel to the downstream side end edge 20D of the blowing section diaphragm 20, and a vertical direction D3 (the connection section 151 is from below the fitting section 51, or the fitting section 51 is from above the connection section 151).

In the example shown in fig. 1, the blower partition plate 20 extends to the vicinity of the cooling heat exchanger 110. The space around the impeller 5 and the space between the cooling heat exchanger 110 and the winding end 50e of the inner circumferential surface of the scroll casing 50 and the air-conditioning case 150 are divided vertically by the blower partition plate 20. More specifically, the blower partition plate 20 divides the space around the impeller 5 and the space between the winding end 50e of the inner peripheral surface of the scroll casing and the lower-stage fitting end 92 of the lower scroll member 62, out of the internal spaces of the scroll casing 50 and the air conditioning case 150, into the upper air flow path 10A and the lower air flow path 10B. The blower partition 20 divides a space between the lower-stage fitting end 92 of the lower scroll member 62 and the downstream-side end edge 20d of the blower partition 20, of the internal spaces of the scroll casing 50 and the air-conditioning case 150, into an upper air flow path 10A and a lower blower flow path 100B.

Further, an air-conditioning-section partition 120 is disposed downstream of the blower-section partition 20 in the air flow. In the example shown in fig. 1, the air conditioning partition 120 vertically divides the space between the cooling heat exchanger 110 and the heating heat exchanger 140 in the internal space of the air conditioning casing 150 into an upper air blowing path 100A and a lower air blowing path 100B.

The blower partition plate 20 may not extend to the vicinity of the cooling heat exchanger 110. In this case, an air conditioner partition plate may be further disposed between the downstream end edge 20d of the blower partition plate 20 and the cooling heat exchanger 110.

As can be understood from fig. 2, the portion of the blower partition 20 extending above the lower blower duct 100B of the air conditioning unit 100 is disposed between the upper scroll member 61 and the lower air conditioning casing member 162. The air blowing section partition 20 is fitted at its edge portion to the upper scroll member 61 and the lower air conditioning casing member 162.

As described above, the upper portion 140A of the heating heat exchanger 140 is positioned in the upper air blowing duct 100A, and the lower portion 140B of the heating heat exchanger 140 is positioned in the lower air blowing duct 100B. However, the upper portion 140A of the heating heat exchanger 140 does not occupy the entire cross section of the upper blow duct 100A. The area of the upper air flow duct 100A where the heating heat exchanger 140 is not present is a bypass path 153A, and the bypass path 153A allows the air flowing through the upper air flow duct 100A to flow to the downstream side of the heating heat exchanger 140 without passing through the upper portion 140A of the heating heat exchanger 140 (bypassing the upper portion 140A). Likewise, the lower portion 140B of the heating heat exchanger 140 does not occupy the entire cross section of the lower blow duct 100B. The region of the lower air blowing duct 100B where the heating heat exchanger 140 is not present is a bypass path 153B, and the bypass path 153B allows the air flowing through the lower air blowing duct 100B to flow to the downstream side of the heating heat exchanger 140 without passing through the lower portion 140B of the heating heat exchanger 140 (bypassing the lower portion 140B).

Between the cooling heat exchanger 110 and the heating heat exchanger 140, an upper temperature control door 161D and a lower temperature control door 162D are provided in the upper air supply duct 100A and the lower air supply duct 100B, respectively. By rotating the upper temperature-adjusting door 161D about the rotation shaft 161R extending in the horizontal direction (vertical direction of the paper surface in fig. 1), the ratio of air passing through the heating heat exchanger 140 in the upper air supply duct 100A can be adjusted. Similarly, the ratio of the air passing through the heating heat exchanger 140 in the lower air blowing duct 100B can be adjusted by rotating the lower temperature-adjusting door 162D about the rotation shaft 162R extending in the horizontal direction.

A mixing chamber 170 is formed on the downstream side of the heating heat exchanger 140 of the air conditioning casing 150. The mixing chamber 170 faces the upper air supply duct 100A and the lower air supply duct 100B, and air flowing through the

air supply ducts

100A and 100B flows in. Further, between the position facing the upper side air blowing duct 100A and the position facing the lower side air blowing duct 100B, a double-layer mode adjusting door 163D is provided. By appropriately rotating the double mode adjustment door 163D about the rotation axis 163R extending in the horizontal direction (the vertical direction of the paper in fig. 1), the double mode adjustment door 163D can be positioned between a closed position where air flowing through the upper air supply duct 100A and air flowing through the lower air supply duct 100B are prevented from being mixed and an open position where mixing is not prevented. In fig. 1, the case where the double layer mode adjustment gate 163D is located at the closed position is shown.

The mixing chamber 170 faces the defroster blow-out passage 172, the air discharge passage 174, and the foot blow-out passage 176. The air in the mixing chamber 170 can flow into each of the defroster outlet duct 172, the discharge duct 174, and the foot outlet duct 176.

The downstream end of the defroster air outlet passage 172 is connected to an unillustrated defroster air outlet that blows air toward the inner surface of the windshield in the vehicle interior. The downstream end of the air discharge duct 174 is connected to an air discharge port (not shown) that blows air toward the upper body of an occupant seated in the driver seat and the front passenger seat (or the rear seat in some cases). The downstream end of the foot outlet passage 176 is connected to a foot outlet (not shown) that blows air toward the feet of an occupant seated in the driver seat and the passenger seat (or the rear seat in some cases).

The defroster outlet duct 172, the air outlet duct 174, and the foot outlet duct 176 are provided with a defroster door 172D, an air outlet door 174D, and a foot door 176D for adjusting the opening degrees (i.e., opening areas) of the

outlet ducts

172, 174, and 176, respectively. The respective opening degrees of the defrost door 172D, the exhaust door 174D, and the foot door 176D can be controlled by controlling the angular positions of the

doors

172D, 174D, 176D.

Next, a method of assembling the air blowing unit 10 and the air conditioning unit 100 will be described. First, the air blowing unit 10 and the air conditioning unit 100 are assembled. Specifically, the air blowing unit 10 and the air conditioning unit 100 are brought closer to each other in any one of a direction D1 extending from the air blowing unit partition plate 20 from the lower air flow path 10B, a direction D2 parallel to the downstream end edge 20D of the air blowing unit partition plate 20, and a vertical direction D3 (specifically, the connection portion 151 is located below the fitting portion 51), and the fitting portion 51 and the connection portion 151 are brought into contact with each other. Then, the air blowing unit 10 and the air conditioning unit 100 are fixed to each other by using well-known connecting members such as clips and screws or claw-like connecting means integrally formed in the air conditioning case 150 as necessary, thereby forming the vehicle air conditioning apparatus 1. Next, the air conditioner 1 for a vehicle is mounted on a partition wall (a wall that separates an engine compartment and a passenger compartment, and may be referred to as an instrument panel or a firewall) of the vehicle. At this time, the first opening 75 of the air intake casing 70 is positioned near the outlet of the outside air intake duct provided in the vehicle, and the second opening 76 and the third opening 77 are mounted so as to be open to the interior of the vehicle.

Next, the operation of the vehicle air conditioner shown in fig. 1 to 3 will be described.

In the first operation mode of the vehicle air conditioner, the first switching door 73 of the blower 10 is set to the first position, the first opening 75 is opened, and the second opening 76 is closed. The second switching door 74 is set to the second position, and the third opening 77 is closed. In this case, the outside air AE introduced into the air intake casing 70 from the first opening 75 forms a first air flow passing through the outside of the separation cylinder 30 and flowing into the upper half of the blade row 6A of the impeller 5, and a second air flow passing through the inside of the separation cylinder 30 and flowing into the lower half of the blade row 6A of the impeller 5. The first operation mode is also sometimes referred to as an outside air mode.

In the second operation mode, the first switching door 73 is set to the first position, the first opening 75 is opened, and the second opening 76 is closed. The second switching door 74 is set to the first position, and the third opening 77 is opened. In this case, the outside air AE introduced into the air intake casing 70 from the first opening 75 forms a first air flow that passes through the outside of the separation tube 30 and flows into the upper half of the blade row 6A of the impeller 5. The inside air AR introduced from the third opening 77 forms a second air flow that passes through the inside of the separation tube 30 and flows into the lower half of the blade row 6A of the impeller 5. As can be seen from fig. 1, the second switching door 74 at the first position divides the space above the filter 79 into the space on the first opening 75 side and the space on the third opening 77 side, thereby preventing the outside air AE and the inside air AR from mixing above the filter 79. That is, in the second operation mode, the second switching door 74 at the first position functions as a partition wall for separating the outside air AE and the inside air AR above the filter 79. The second mode of operation is also sometimes referred to as an inside-outside air double flow mode.

In the third operation mode, the first switching door 73 is set to the second position, the first opening 75 is closed, and the second opening 76 is opened. The second switching door 74 is set to the first position, and the third opening 77 is opened. In this case, the internal air AR introduced into the air intake casing 70 from the second opening 76 and the third opening 77 forms a first air flow that passes through the outside of the separation tube 30 and flows into the upper half of the blade row 6A of the impeller 5, and a second air flow that passes through the inside of the separation tube 30 and flows into the lower half of the blade row 6A of the impeller 5. The third mode of operation is sometimes referred to as an interior air mode.

The first air flow flowing into the upper half of the blade row 6A flows into the upper air flow path 10A, and then flows into the upper air blowing duct 100A of the air conditioning unit 100. The second air flow flowing into the lower half of the blade row 6A flows into the lower air flow passage 10B and then flows into the lower air blowing duct 100B of the air conditioning unit 100. Then, these airflows pass through the cooling heat exchanger 110. In the cooling heat exchanger 110, moisture in the air is condensed to generate condensed water. The condensed water falls to the drain region 130 located below the cooling heat exchanger 110, and is discharged from the discharge port 131. The air flow passing through the cooling heat exchanger 110 passes through the heating heat exchanger 140 or passes through

bypass paths

153A and 153B around the heating heat exchanger 140, and flows into the mixing chamber 170. The air flow flowing into the mixing chamber 170 is blown out from the respective blow-out ports through the blow-out

passages

172, 174, 176.

In the second operation mode (inside-outside air double flow mode), the double mode adjustment door 163D is in the closed position. The air flowing through the upper air duct 100A can flow to the defroster outlet duct 172 and the air outlet duct 174, while the air flowing to the foot outlet duct 176 is prohibited. At the same time, the air flowing through the lower air blowing duct 100B can flow to the foot outlet passage 176, while the flow to the defroster outlet passage 172 and the air outlet passage 174 is prohibited.

In the first operation mode (outside air mode) and the third operation mode (inside air mode), the two-stage mode adjustment door 163D is in the open position. The air flowing through the upper blow duct 100A and the air flowing through the lower blow duct 100B can be mixed in the mixing chamber 170. As a result, the air flowing through the upper blowing duct 100A can flow to any one of the defroster blowing duct 172, the discharge duct 174, and the foot blowing duct 176. At the same time, the air flowing through the lower blowing path 100B can flow to any one of the defroster blowing path 172, the discharge path 174, and the foot blowing path 176.

In the first and second operation modes, rainwater or the like W entering the upper air flow path 10A of the blower unit 10 together with the outside air is guided by the blower partition 20 to above the lower air flow path 100B of the air conditioning unit 100, particularly to above the drain region 130 in the illustrated example. Then, the air falls on the downstream side end 20d into the lower air flow duct 100B, particularly into the lower drain region 130 in the illustrated example, and is discharged from the discharge port 131.

< modification 1 >

Next, modified example 1 of the air conditioner 1 according to the first embodiment will be described with reference to fig. 4 and 5. Fig. 4 is a perspective view corresponding to fig. 2, schematically showing a scroll casing, a blower partition plate, and a connecting portion of an air conditioning casing in modification 1. Fig. 5 is a view corresponding to fig. 3, and is a plan view schematically showing a lower scroll member, a lower air-conditioning casing member, a blowing section diaphragm, and an air-conditioning section diaphragm of the air-conditioning apparatus shown in fig. 4.

In modification 1 shown in fig. 4 and 5, the lower fitting end portion 92 is different from the scroll casing 50 and the air-sending section diaphragm 20 shown in fig. 1 to 3 in that it does not extend parallel to the downstream side end edge 20d. The other structure is substantially the same as the air conditioner 1 shown in fig. 1 to 3. In modification 1 shown in fig. 4 and 5, the same portions as those of the first embodiment shown in fig. 1 to 3 are given the same reference numerals, and detailed description thereof is omitted.

In this air conditioner 1, the fitting portion 51 and the connecting portion 151 are connected at least in a direction D1 extending from the blower partition plate 20 from the lower air passage 10B of the blower 10, a direction D2 parallel to the downstream side edge 20D of the blower partition plate 20, and a vertical direction D3 (the connecting portion 151 is located below the fitting portion 51, or the fitting portion 51 is located above the connecting portion 151), whereby the blower 10 and the air conditioner 100 are assembled.

< modification 2 >

Next, a modified example 2 of the air conditioner 1 according to the first embodiment will be described with reference to fig. 6. Fig. 6 is a view corresponding to fig. 2, and is a perspective view schematically showing a scroll casing, a blower partition plate, and a connecting portion of an air conditioning casing in modification 2.

The scroll housing 50 shown in fig. 6 is different from the scroll housing 50 shown in fig. 1 to 3 in the relative positions of the upper fitting end 91 and the downstream side end edge 20d of the blower partition 20. The other structure is substantially the same as that of the scroll housing 50 shown in fig. 1 to 3. In modification 2 shown in fig. 6, the same portions as those in the first embodiment shown in fig. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

In the example shown in fig. 6 and 7, the upper-layer fitting end 91 is located on the downstream side of the downstream-side end edge 20d of the blower partition 20 in the air flow from the fitting portion 51 to the cooling heat exchanger 110, that is, in the air flow direction passing through the cooling heat exchanger 110. In other words, in the air flow, the portion of the upper scroll member 61 corresponding to the fitting portion 51 extends to the downstream side of the downstream end edge 20d of the blower partition 20. The upper air conditioning casing member 161 is formed corresponding to the upper scroll member 61.

In this air conditioner 1, the fitting portion 51 and the connection portion 151 are connected at least in a direction D1 extending from the blower partition 20 from the lower air passage 10B of the blower 10, a direction D2 parallel to the downstream side edge 20D of the blower partition 20, and a vertical direction D3 (the connection portion 151 is located below the fitting portion 51, or the fitting portion 51 is located above the connection portion 151), and the blower 10 and the air conditioner 100 are assembled.

< second embodiment >

Next, an air conditioner 1A according to a second embodiment will be described with reference to fig. 7 to 9. Fig. 7 is a cross-sectional view corresponding to fig. 1, schematically showing the structure of the air blowing unit and the air conditioning unit of the air conditioning apparatus according to the second embodiment of the present invention. Fig. 8 is a perspective view corresponding to fig. 2, schematically showing a scroll casing, a blower partition plate, and a connection portion of an air conditioning casing of the air conditioner shown in fig. 7. Fig. 9 is a sectional view taken along the extending direction of the water leakage preventing plate, schematically showing the water leakage preventing plate provided to the scroll casing shown in fig. 8.

The air conditioner 1A shown in fig. 7 to 9 is different from the air conditioner 1 shown in fig. 1 to 3 in that a water leakage preventing plate 80 is provided in the fitting portion 51. The other structure is substantially the same as that of the first embodiment shown in fig. 1 to 3. In the second embodiment shown in fig. 7 to 9, the same components as those in the first embodiment shown in fig. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

The water leakage preventing plate 80 is further provided, and the water leakage preventing plate 80 is connected to or extended from below the bottom surface 51b of the fitting portion 51 and extends to a lower region of the connecting portion 151. In the illustrated example, the water leakage preventing plate 80 extends along the bottom surface 151b of the connection part 151.

In the air conditioner 1A, rainwater or the like leaking from the joint between the lower fitting end portion 92 of the air blowing unit 10 and the lower connection end portion 192 of the air conditioning unit 100 can be guided to a desired location by the water-tight plate 80. For example, rainwater or the like leaking from the intersection may be guided to a location away from the vehicle control electronic device, which may be disposed at the feet of the occupant or below the air conditioner 1A. Even if rainwater or the like leaks from the connecting portion and drops into the interior of the vehicle, it is possible to prevent or suppress the enlargement of adverse conditions due to the leakage. Further, by providing the water leakage preventing plate 80 on the air blowing unit 10, the positional relationship between the air blowing unit 10 and the air conditioning unit 100 can be easily optimized in the process of bringing them closer to each other, and the workability of assembly can be improved.

In the air conditioner 1A, the assembly operation of the blower unit 10 and the air conditioner 100 may be performed as follows: the fitting portion 51 and the connecting portion 151 are connected at least in a direction D1 extending from the blower partition 20 from the lower air passage 10B of the blower 10 and in a direction D2 parallel to the downstream end edge 20D of the blower partition 20.

< third embodiment >

Next, an air conditioner 1B according to a third embodiment will be described with reference to fig. 10 and 11. Fig. 10 is a cross-sectional view corresponding to fig. 1, schematically showing the configuration of a blower and an air conditioner in an air conditioner according to a third embodiment of the present invention. Fig. 11 is a view corresponding to fig. 3, and is a plan view schematically showing a lower scroll member, a lower air-conditioning casing member, a blowing section diaphragm, and an air-conditioning section diaphragm of the air-conditioning apparatus shown in fig. 10.

The air conditioner 1B shown in fig. 10 and 11 differs from the air conditioner 1 shown in fig. 1 to 3 in that a communication hole 201 is provided in the blower partition plate 20. The other structure is substantially the same as that of the first embodiment shown in fig. 1 to 3. In the third embodiment shown in fig. 10 and 11, the same portions as those of the first embodiment shown in fig. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

The blower partition 20 has a communication hole 201 that communicates between an upper passage (upper air flow passage 10A) and a lower passage (lower blower passage 100B) of the blower partition 20. The communication hole 201 allows water in the upper duct (upper air flow passage 10A) to flow into the lower duct (lower air blowing passage 100B). In the air flow from the fitting portion 51 toward the cooling heat exchanger 110, the communication hole 201 is located downstream of the lower connection end 192 of the air conditioning casing 150. That is, the communication hole 201 is provided at a position above the lower air blowing duct 100B of the air conditioning unit 100. Therefore, the rainwater or the like W guided by the blowing section partition plate 20 can flow down to the lower blowing duct 100B through the communication hole 201.

In the illustrated example, the communication hole 201 is provided at a position above the drain region 130. Then, the rainwater or the like W flowing into the lower air blowing duct 100B through the communication hole 201 falls to the drain region 130. The rainwater and the like W flowing into the drainage region 130 are guided to the discharge port 131 by the inclined surface 132 inclined downward toward the discharge port 131, and are discharged to the outside of the air conditioner 1 through the discharge port 131.

Although the shape of the communication hole 201 is arbitrary, it is preferable that, for example, as shown in fig. 11, the shape of the communication hole 201 is a V-shape that is tapered toward the downstream side of the air flow in the blower partition 20 when the blower partition 20 is viewed in plan (that is, the V-shape in which the bent portion of the V-shape is disposed on the downstream side of the air flow with respect to both end portions of the V-shape). If the communication hole 201 is shaped like this, rainwater or the like W attached to the communication hole 201 can be smoothly guided to the drain region 130. That is, since the rainwater and the like W attached to the communication hole 201 are collected in the V-shaped bent portion by the airflow and form large water droplets to fall downward, the risk of remaining in the communication hole 201 is low.

In the air conditioner 1B, rainwater or the like W entering the upper air flow path 10A of the blower 10 can be guided to the lower air blowing duct 100B of the air conditioning unit 100 regardless of the blowing direction of the blower 10 (regardless of whether the bottom surface of the lower air flow path 10B is configured to be inclined upward). In particular, in the illustrated example, the blower partition 20 can guide rainwater or the like W entering the upper air flow path 10A to the drain region 130 regardless of the shape of the

lower ducts

10B, 100B of the air conditioner 1B and the blowing direction of the blower 10.

< fourth embodiment >

In the description so far, the air conditioning case 150 has the upper air conditioning case member 161 and the lower air conditioning case member 162 positioned below the upper air conditioning case member 161, but the upper air conditioning case member 161 and the lower air conditioning case member 162 may be integrally formed in the vertical direction (the direction indicated by D3 in fig. 2, 4, and 6), and may be divided (not shown) in the width direction of the connection portion 151 (the direction indicated by D2 in fig. 2, 4, 6, and 8). The partition structure of the air-conditioning case 150 may be appropriately selected according to the conditions of production or quality.

In air-conditioning case 150, connecting portion 151 of air-conditioning unit 100 has upper layer connecting end 191 connected to upper layer fitting end 91 and lower layer connecting end 192 connected to lower layer fitting end 92, and thus fitting portion 51 and connecting portion 151 can be brought into contact with each other in any one of directions D1, D2, and D3. As shown in fig. 8, the air blowing unit 10 and the air conditioning unit 100 may be brought close to each other in either direction D1 or D2, and the fitting unit 51 may be brought into contact with the connection unit 151.

Industrial applicability of the invention

The air conditioner for a vehicle according to the present invention can be industrially produced and also can be used as a target of commercial transactions, and thus has an economic value and can be industrially applied.

Description of the reference numerals

1. 1A, 1B vehicle air conditioning device; 10 air supply part; 5, an impeller; 6 blades of the impeller; 6A blade row; 13 a motor; 20 air supply part clapboard; 20d downstream side end edge; 20S the upper surface of the air supply part clapboard; 30, separating a cylinder; 50 scroll chamber housing; 50e winding the end; 51 a fitting part; 61 upper scroll part; 62 lower scroll member; 70 air intake housing; 80 a water leakage preventing plate; 91 upper layer embedding end part; 92 lower layer fitting end portion; 100 an air conditioning part; 110a heat exchanger for cooling; 130 drainage area; 131 an exhaust port; 132 an inclined surface; 140a heat exchanger for heating; 150 an air conditioning housing; 151 connecting part; 161 upper air conditioning housing part; 162 lower air conditioning housing component; 191 the upper layer connecting the end; 192 lower layer connection ends; 201 a communication hole; ax axis of rotation.

Claims

1. An air conditioner (1, 1A, 1B) for a vehicle, wherein,

the air supply unit (10) is provided with an air supply unit (10) and an air conditioning unit (100), and the air supply unit (10) is provided with: a motor (13), an impeller (5) which is rotationally driven by the motor (13) and blows air, and a volute casing (50) which has an internal space for accommodating the impeller (5) and a fitting portion (51) which is open in the circumferential direction, the air-conditioning portion (100) having a cooling heat exchanger (110) and an air-conditioning case (150) which has an internal space for accommodating the cooling heat exchanger (110) and a connecting portion (151) which is connected to the fitting portion (51) of the volute casing (50), the air-feeding portion (10) further having a blowing portion bulkhead (20) which divides a region between an inner circumferential surface of the volute casing (50) and an outer circumferential surface of the impeller (5) and the internal space of the fitting portion (51) into an upper air flow path (10A) and a lower air flow path (10B), a downstream side of the fitting portion (51) in an air flow from the fitting portion (51) toward the cooling heat exchanger (110) having an upper layer fitting end (91) which is located above the blowing portion bulkhead (20) and a lower layer connecting end (92) which is located below the upper layer fitting end (91) and a lower layer connecting end (192) which is located below the lower layer connecting end (91), in the air flow from the fitting part (51) to the cooling heat exchanger (110), the lower layer connection end part (192) is located on the upstream side of the downstream side edge (20 d) of the blowing part partition plate (20), and the upper layer fitting end part (91) is located at the same position as the downstream side edge (20 d) or on the downstream side of the downstream side edge (20 d).

2. Air conditioning unit (1, 1A, 1B) according to claim 1,

the upper surface of the air-feeding partition plate (20) is substantially horizontal or inclined downward from a portion of the inner peripheral surface of the scroll housing (50) corresponding to a winding end (50 e) to the downstream-side end edge (20 d) of the air-feeding partition plate (20).

3. Air conditioning unit (1, 1A, 1B) according to claim 1 or 2,

the lower-layer fitting end (92) extends in parallel with the downstream-side end edge (20 d) of the blower partition (20) when viewed in the direction from the upper air flow path (10A) toward the lower air flow path (10B).

4. Air conditioning unit (1, 1A, 1B) according to claim 1 or 2,

the lower-stage fitting end (92) extends in a non-parallel manner with the downstream-side end edge (20 d) of the blower partition (20) when viewed in a direction from the upper-side air flow path (10A) toward the lower-side air flow path (10B).

5. The air conditioning apparatus (1A) according to any one of claims 1 to 4,

the waterproof structure is further provided with a waterproof plate (80), wherein the waterproof plate (80) is connected or extended from the lower part to the bottom surface (51 b) of the embedded part (51) and extends to the lower area of the connecting part (151).