Vehicle air conditioning unit

Abstract

A vehicle air conditioning unit (1) is provided with: an air conditioning case (10) that forms an air ventilation path; a blower (30) for generating an airflow toward a vehicle cabin in the ventilation path; and an air filter (22) disposed on an upstream side of the airflow of the blower. The air conditioning case includes a filter housing portion (12) that houses the air filter. An angle formed by an air passage surface (220) of the air filter on a blower side and an opening surface of a suction port of the blower is set as a filter angle. At this time, an insertion port (121) for inserting the air filter into an interior of the air conditioning case in a first posture in which the filter angle exceeds a predetermined reference angle is provided in the filter housing portion. In addition, a space for enabling the posture of the air filter to be tilted from the first posture to a second posture in which the filter angle becomes the reference angle or less is provided in the filter housing portion. The air filter is installed in the filter housing portion in the second posture.

Description

[0001] Cross-reference of related applications

[0002] This application is based on Japanese Patent Application No. 2024-026703, filed on February 26, 2024, the contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to vehicle air conditioning units. Background Technology

[0004] Previously, a vehicle air conditioning unit (for example, see Patent Document 1) was disclosed in which the air intake unit and the blower were both located in the engine compartment. Considering maintainability, the air filter was arranged in a forward-leaning position with the front end of the filter positioned above the rear end.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent document 1: International Publication No. 2020 / 231102.

[0008] However, the inventors have explored that in the vehicle air conditioning unit described in Patent Document 1, in order to suppress the size of the air intake unit, the air intake structure is configured such that the opening surface of the air intake of the air blower is in a nearly vertical position.

[0009] As can be seen from the present invention's investigation, in the above-described air intake structure, due to the constraint of the air filter's orientation, a steep, curved path is formed between the air filter in its mounted state and the blower's inlet, easily causing a deviation in air velocity distribution near the blower's inlet. This deviation in air velocity distribution near the blower's inlet becomes a factor leading to deterioration in air delivery performance, and is therefore undesirable. Furthermore, this problem is not limited to the above-described air intake structure; it can also occur when a steep, curved path is formed between the air filter and the blower's inlet. Summary of the Invention

[0010] The purpose of this disclosure is to provide a vehicle air conditioning unit that can suppress the deterioration of the air delivery performance of the blower even when there are restrictions on the posture of the air filter during insertion.

[0011] According to one point of view in this disclosure

[0012] The vehicle's air conditioning unit is equipped with:

[0013] Air conditioner housing, which forms the air ventilation path;

[0014] A blower, used to generate airflow toward the vehicle interior in the ventilation duct; and

[0015] An air filter is disposed upstream of the airflow from the blower.

[0016] The air conditioner housing includes a filter housing section that houses the air filter.

[0017] When the angle between the air vent surface of the air filter located on the blower side and the opening surface of the blower's inlet is defined as the filter angle,

[0018] The filter housing is provided with an insertion port for inserting the air filter into the interior of the air conditioner housing in a first posture where the filter angle exceeds a predetermined reference angle. The filter housing is also provided with a space for allowing the air filter to tilt from the first posture to a second posture where the filter angle is below the reference angle.

[0019] The air filter is installed in the filter housing in the second position.

[0020] In this way, if the air filter can be tilted in the filter housing, even if there are constraints when inserting the air filter, the bending of the passage between the air filter and the blower inlet in the installed state can be suppressed.

[0021] Therefore, according to the vehicle air conditioning unit disclosed herein, even when there are restrictions on the insertion of the air filter, the deterioration of the air supply performance of the blower can be suppressed. Attached Figure Description

[0022] Figure 1 This is an explanatory diagram illustrating the vehicle air conditioning unit's mounting state in the vehicle according to the first embodiment.

[0023] Figure 2 This is a schematic diagram of the vehicle air conditioning unit according to the first embodiment.

[0024] Figure 3 This is an explanatory diagram illustrating the wind speed distribution near the intake of the blower in an air conditioning unit, which is a comparative example of the first embodiment.

[0025] Figure 4 This is an explanatory diagram illustrating the filter angle when the air filter is inserted.

[0026] Figure 5 This is an explanatory diagram illustrating the filter angle during air filter installation.

[0027] Figure 6 This is an explanatory diagram used to illustrate the filter guide.

[0028] Figure 7 This is an explanatory diagram used to illustrate the filter cover.

[0029] Figure 8 This is an explanatory diagram illustrating the wind speed distribution near the intake of the blower in the vehicle air conditioning unit according to the first embodiment.

[0030] Figure 9 This is a schematic diagram of the vehicle air conditioning unit according to the second embodiment.

[0031] Figure 10 This is an explanatory diagram illustrating the filter angle when the air filter of the vehicle air conditioning unit according to the third embodiment is inserted.

[0032] Figure 11 This is an explanatory diagram illustrating the filter angle during installation of the air filter of the vehicle air conditioning unit according to the third embodiment.

[0033] Figure 12 This is a schematic top view showing a portion of the vehicle air conditioning unit according to the fourth embodiment.

[0034] Figure 13 This is a schematic cross-sectional view showing a portion of the vehicle air conditioning unit according to the fourth embodiment.

[0035] Figure 14 This is a schematic cross-sectional view showing a portion of the vehicle air conditioning unit according to the fifth embodiment.

[0036] Figure 15 This is an explanatory diagram illustrating the arrangement method of the division section of the vehicle air conditioning unit according to the fifth embodiment.

[0037] Figure 16 This is a schematic cross-sectional view showing a portion of the vehicle air conditioning unit according to the sixth embodiment.

[0038] Figure 17 This is an explanatory diagram illustrating the insertion method of the division section of the vehicle air conditioning unit according to the sixth embodiment.

[0039] Figure 18 This is a schematic cross-sectional view showing a portion of the vehicle air conditioning unit according to the seventh embodiment.

[0040] Figure 19 This is an explanatory diagram illustrating the method for installing the air filter of the vehicle air conditioning unit according to the seventh embodiment.

[0041] Figure 20 This is a schematic cross-sectional view showing a portion of the vehicle air conditioning unit according to the eighth embodiment.

[0042] Figure 21 This is an explanatory diagram illustrating the method for installing the air filter of the vehicle air conditioning unit according to the eighth embodiment.

[0043] Figure 22 This is a schematic cross-sectional view showing a portion of the vehicle air conditioning unit according to the ninth embodiment.

[0044] Figure 23 This is an explanatory diagram illustrating the method for installing the air filter of the vehicle air conditioning unit according to the ninth embodiment. Detailed Implementation

[0045] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Furthermore, in the following embodiments, parts that are the same as or equivalent to those described in prior embodiments are sometimes given the same reference numerals and their descriptions are omitted. Additionally, in embodiments, when only a portion of the constituent elements is described, the constituent elements described in prior embodiments can be applied to other portions of the constituent elements. The following embodiments can be partially combined with each other, even without explicit explicit description, as long as they do not, in particular, hinder combination.

[0046] (First Implementation)

[0047] Reference Figures 1 to 8 This embodiment will now be described. In this embodiment, an example will be described where the vehicle air conditioning unit 1 of this disclosure is applied to a vehicle V in which the front side is divided into a passenger compartment V1 and a front space V0 different from the passenger compartment V1 by a baffle DP. Furthermore, the arrows in each figure indicating front-back, up-down, and left-right directions show the orientation of the vehicle V equipped with the vehicle air conditioning unit 1.

[0048] like Figure 1 As shown, the vehicle air conditioning unit 1 is configured to pass through the partition DP, spanning the interior V1 and the front space V0. The front space V0 is the space where vehicle drive equipment such as the engine and motor are located, and is referred to as the engine compartment, motor compartment, etc. The vehicle air conditioning unit 1 is positioned between the driver's seat DS and the passenger seat PS in the left-right direction of the vehicle V, which is configured as a so-called central placement layout. In this example, the driver's seat space constitutes the right side space of the interior V1, and the passenger seat space constitutes the left side space of the interior V1.

[0049] like Figure 2As shown, the vehicle air conditioning unit 1 is constructed by assembling three modules: an intake module 1A, a blower module 1B, and a temperature control module 1C. The vehicle air conditioning unit 1 is assembled such that the intake module 1A, blower module 1B, and temperature control module 1C are arranged in a front-to-back sequence. Specifically, in the vehicle air conditioning unit 1, the intake module 1A is positioned in front of the blower module 1B, and the blower module 1B is positioned in front of the temperature control module 1C.

[0050] The intake module 1A introduces at least one of external air and internal air. The intake module 1A is not located in the vehicle interior V1, but in the front space V0, which is the external space.

[0051] The blower module 1B includes a blower 30 that draws in at least one of outside air and inside air via the intake module 1A. The blower module 1B has an air intake 13a on one side of the blower 30 along the axial direction CL, and an air outlet 13b on the other side of the blower 30 along the axial direction CL. The intake module 1A is assembled on the side of the blower module 1B at the intake 13a. The blower module 1B is not located inside the vehicle interior V1, but rather in the front space V0, which serves as the external space.

[0052] Temperature control module 1C adjusts the temperature of the air blown out from blower 30 and delivers it to the vehicle interior V1. Temperature control module 1C is assembled on the blower outlet 13b side of blower module 1B. Temperature control module 1C is located inside baffle IP in vehicle interior V1.

[0053] The vehicle air conditioning unit 1 configured in this way includes an air conditioning housing 10, an indoor / outdoor air switching door 20, an air filter 22, a blower 30, an evaporator 40, a heater core 50, an air mixing door 60, and a mode switching door 70.

[0054] The air conditioning housing 10 is a component that forms the outer shell of the vehicle air conditioning unit 1 and creates an air ventilation path inside it. The air conditioning housing 10 includes an air intake section 11, a filter housing section 12, a fan housing section 13, and a heat equipment housing section 14.

[0055] The intake section 11 switches between internal air circulation (directing internal air to the air filter 22) and external air introduction (directing external air to the air filter 22) by actuating the internal / external air switching valve 20. An external air inlet 111 for introducing external air and an internal air inlet 112 for introducing internal air are formed on the upper side of the intake section 11. Furthermore, the internal / external air switching valve 20, which opens and closes the external air inlet 111 and the internal air inlet 112, is provided in the intake section 11.

[0056] The internal and external air switching door 20 is composed of a revolving door that opens and closes the external air inlet 111 and the internal air inlet 112. Alternatively, the internal and external air switching door 20 may not be composed of a revolving door, but may be composed of a cantilevered panel door, a butterfly door, etc.

[0057] A filter housing 12 is provided below the air intake 11. The filter housing 12 forms a space for arranging an air filter 22. An insertion port 121 for inserting the air filter 22 is formed in the filter housing 12.

[0058] Typically, the drive unit and refrigeration cycle components are located in the engine compartment or similar space. To avoid interference with these components, the insertion port 121 is located above the front side of the air conditioning housing 10. Furthermore, considering maintainability, including disassembly and assembly, the filter housing 12 is configured such that the air filter 22 can be inserted into the insertion port 121 in a forward-leaning position with the front side of the air filter 22 above the rear side. These details will be described later.

[0059] Air filter 22 captures foreign objects that enter from at least one of the external air inlet 111 and the internal air inlet 112. Air filter 22 is configured, for example, to include filter material formed by folding a breathable sheet into a pleated shape, and reinforcing portions such as reinforcing the ends of the filter material.

[0060] In addition to filtering foreign objects, the air filter 22 also has a rectification effect. Through this rectification effect, the direction of the air flowing out from the ventilation surface 220 on the fan 30 side of the air filter 22 is easily rectified to a direction that is approximately orthogonal to the ventilation surface 220.

[0061] The filter housing 12 has a curved passage inside it through which air flowing in from the upper side of the air filter 22 flows toward the rear side of the air filter 22. A fan housing 13 is connected to the filter housing 12 at the rear side of the air filter 22.

[0062] The fan housing 13 forms the fan housing of the fan 31 in the blower 30. The external shape of the fan housing 13 as seen from the outside is cylindrical. In the fan housing 13, an intake port 13a is formed on the upstream side connected to the filter housing 12, and an outlet port 13b is formed on the downstream side connected to the heat equipment housing 14.

[0063] The blower 30 includes a fan 31 and a fan motor 32 that rotates the fan 31. The blower 30 is mounted on the vehicle V with the opening surface of the intake 13a intersecting the horizontal direction. Furthermore, the opening surface is a plane that includes the opening of the intake 13a.

[0064] The fan 31 and fan motor 32 of the blower 30 are disposed between the inlet 13a and outlet 13b of the fan housing 13. In this embodiment, the blower 30 is configured in a generally horizontal orientation with the axis CL of the rotation axis AX of the fan 31 being approximately horizontal.

[0065] The fan 31 is a centrifugal fan that draws in air from one side of the axial direction CL of the rotation axis AX and blows it away from the rotation axis AX. The air blown out from the fan 31 flows through the passage between the outer peripheral portion of the fan 31 and the inner surface of the fan housing 13 toward the rearward-facing outlet 13b. Thus, the blower 30 of this embodiment is configured to blow air drawn in from the front side to the rear.

[0066] The portion of the fan housing 13 at the outlet 13b is connected to the heat equipment housing 14. The heat equipment housing 14 has a space for housing at least a portion of a heat equipment for adjusting the temperature of the air blown out from the blower 30. In the heat equipment housing 14, an evaporator 40 is disposed near the portion connected to the outlet 13b.

[0067] Evaporator 40 is a heat exchanger used to cool the air passing through it. Evaporator 40 is housed inside heat equipment housing 14 such that the full volume of air blown from blown by fan 30 passes through it. Evaporator 40, together with compressor (not shown), radiator, and expansion valve, constitute a vapor compression refrigeration cycle. Evaporator 40 cools the air by exchanging heat with low-pressure refrigerant (reduced by the expansion valve) with the air, causing the refrigerant to evaporate.

[0068] A heater core 50, which together with the evaporator 40 constitutes a heat exchanger, is disposed downstream of the airflow in the evaporator 40. The heater core 50 is a heat exchanger for heating the air that passes through it.

[0069] A bypass passage 51 is formed above the heater core 50, allowing air after passing through the evaporator 40 to flow around the heater core 50. In addition, an air mixing gate 60 is arranged between the evaporator 40 and the heater core 50.

[0070] The air mixing door 60 adjusts the ratio of the airflow through the heater core 50 to the airflow through the bypass passage 51. In this embodiment, the air mixing door 60 is a sliding door. Alternatively, the air mixing door 60 may also be a panel door.

[0071] The heat equipment housing 14 is disposed in the vehicle interior V1. In the heat equipment housing 14, a defrost outlet 141, a face outlet 142, and a foot outlet 143 are formed as outlets for blowing air into the vehicle interior V1.

[0072] The defroster outlet 141 is an outlet for blowing air into the inside of the windshield of the vehicle V. The defroster outlet 141 is located on the upper surface of the heat equipment housing 14. A defroster door 71, constituting a mode switching door 70, is disposed upstream of the airflow from the defroster outlet 141. The defroster outlet 141 is opened and closed through the defroster door 71.

[0073] The face air outlet 142 is an outlet for blowing air into the upper body of the occupants in the vehicle interior V1. The face air outlet 142 is located on the middle surface between the upper surface and the rear surface of the heat equipment housing 14. A face section 72 constituting the mode switching door 70 is disposed upstream of the airflow from the face air outlet 142. The face air outlet 142 is opened and closed through the face section 72.

[0074] The foot air outlet 143 is an air outlet for blowing air into the lower body of the occupants in the vehicle interior V1. The foot air outlet 143 is located on the rear surface of the heating equipment housing 14. A foot compartment 73, which constitutes the mode switching door 70, is disposed upstream of the airflow from the foot air outlet 143. The foot air outlet 143 is opened and closed through the foot compartment 73.

[0075] Here, Figure 3 This is a schematic configuration diagram of the air conditioning unit CE, which is a comparative example of the first embodiment. The air filter 22 of the air conditioning unit CE in the comparative example differs from the air conditioning unit 1 of the first embodiment in its mounting posture. Furthermore, for ease of explanation, in the components of the air conditioning unit CE in the comparative example, components that are common to or correspond to components of the air conditioning unit 1 of the first embodiment are given the same reference numerals as those of the components of the air conditioning unit 1 of the first embodiment, and their descriptions are omitted.

[0076] like Figure 3 As shown, in the comparative example air conditioning unit CE, considering the ease of installation and removal of the air filter 22, the air filter 22 is installed in a forward-leaning position with its front end above the rear end inside the air intake 11. Furthermore, in the comparative example air conditioning unit CE, the air filter 22 is installed such that the angle (hereinafter referred to as the filter angle θf) formed between the air vent 220 of the air filter 22 on the blower 30 side and the opening surface of the blower 30's intake 13a is an obtuse angle.

[0077] If the air filter 22 is configured in a forward-leaning position as in the comparative example air conditioning unit CE, the passage between the air filter 22 and the intake 13a of the blower 30 becomes a steep, curved passage. Furthermore, the air passing through the air filter 22 is rectified to a direction approximately orthogonal to the airflow surface 220 of the air filter 22, thus facilitating a downward and oblique flow from the rear side towards the front side.

[0078] With this configuration, air tends to detach near the upper end of the inlet 13a in the filter housing 12, and the air tends to flow along the inner wall of the filter housing 12 towards the lower end of the inlet 13a. Consequently, near the inlet 13a of the blower 30, a deviation in air velocity distribution easily occurs, where the upper air velocity is significantly lower than the lower air velocity. This deviation in air velocity distribution near the inlet 13a of the blower 30 is a contributing factor to the deterioration of air delivery performance and is therefore undesirable.

[0079] Considering these factors, in the vehicle air conditioning unit 1 of this embodiment, such as Figure 4 As shown, the filter housing 12 is provided with an insertion port 121 for inserting the air filter 22 into the interior of the air conditioner housing 10 in a first posture with the filter angle θf exceeding a predetermined reference angle.

[0080] The first posture is a forward-leaning posture in which the front part of the air filter 22 is positioned above the rear part of the vehicle V, facilitating insertion from the front to the rear at an angle downwards when the engine hood or motor hood is open. Additionally, the first posture is one in which the filter angle θf becomes an obtuse angle exceeding a right angle. Furthermore, the reference angle is set, for example, to 90°.

[0081] In addition, such as Figure 5 As shown, the filter housing 12 is provided with a space for tilting the air filter 22 from the first position described above to a second position where the filter angle θf is below the reference angle. Furthermore, the air filter 22 is mounted relative to the filter housing 12 in the second position.

[0082] The second posture is a rearward tilting posture in which the rear portion of the vehicle V in the air filter 22 is positioned above the front portion. Additionally, the second posture is a posture where the filter angle θf is less than a right angle.

[0083] Here, the air conditioner housing 10 is provided with a guide portion 123 for assisting the insertion of the air filter 22 into the filter housing 12 and changing the posture of the air filter 22 to a first posture and a second posture. The guide portion 123 has a shape that protrudes from the inner surface of the filter housing 12. The guide portion 123 is implemented, for example, by ribs formed on the inner surface of the air conditioner housing 10, having an uneven inner wall shape.

[0084] The guide portion 123 includes a first component 123a extending obliquely downward and rearward from the upper end of the insertion port 121, and a second component 123b disposed relative to the first component 123a with a gap slightly larger than the thickness of the air filter 22. The second component 123b extends obliquely downward and rearward in a manner substantially parallel to the first component 123a. Furthermore, regarding the first component 123a and the second component 123b, the second component 123b is positioned on the rearward side of the vehicle V, so as not to overlap with each other in the vertical direction.

[0085] The first component 123a and the second component 123b assist the insertion of the air filter 22 into the filter housing 12. Furthermore, regarding the first component 123a, for example... Figure 7 As shown, when the internal and external air switching door 20 is moved to the position where the external air inlet 111 is closed, the first component 123a constitutes a door sealing part that contacts the internal and external air switching door 20 and seals it.

[0086] In addition, the guide portion 123 includes: a third component 123c extending obliquely upward and rearward from the lower end of the first component 123a; and a fourth component 123d disposed relative to the third component 123c with a gap slightly larger than the thickness of the air filter 22. The fourth component 123d extends obliquely downward and forward from the upper end of the second component 123b in a manner substantially parallel to the third component 123c. Furthermore, regarding the third component 123c and the fourth component 123d, the fourth component 123d is positioned on the front side of the vehicle V, rather than the third component 123c, so as not to overlap with each other in the vertical direction.

[0087] The third component 123c and the fourth component 123d are used to change the posture of the air filter 22 to a first posture and a second posture inside the filter housing 12. When the air filter 22 is installed in the filter housing 12, the third component 123c and the fourth component 123d constitute a "filter seal" that contacts and seals the air filter 22. Furthermore, regarding the third component 123c, for example... Figure 6 As shown, when the internal and external air switching door 20 is moved to the position where the internal air inlet 112 is closed, the third component 123c constitutes a "door sealing part" that contacts the internal and external air switching door 20 and seals it.

[0088] Here, the filter housing 12 includes a filter cover 124 that closes the insertion port 121. The filter cover 124 includes a cover portion 124a that covers the insertion port 121 and a fixing portion 124b that contacts the air filter 22 to maintain the position of the air filter 22 in a second position.

[0089] The fixing part 124b is connected to the inner surface of the cover part 124a. In the fixing part 124b, in order to suppress ventilation resistance, the portion 124c connected to the cover part 124a extends along the inner wall of the air conditioner housing 10, and the top end of the portion 124c is provided to contact the air filter 22 with the contact portion 124d.

[0090] In the vehicle air conditioning unit 1 of this embodiment, configured as described above, the air filter 22 is mounted in a backward-tilted position in the filter housing 12, and the curvature of the passage between the air filter 22 and the intake 13a of the blower 30 is smoothed out. As a result, air stripping along the inner wall of the filter housing 12 near the upper end of the intake 13a is suppressed. Consequently, deviations in the air velocity distribution near the intake 13a of the blower 30 are suppressed. Therefore, the deterioration of air delivery performance caused by deviations in the air velocity distribution near the intake 13a of the blower 30 can be suppressed.

[0091] In addition, the vehicle air conditioning unit 1 of this embodiment has the following features.

[0092] (1) The air conditioning housing 10 includes a heat device housing 14 that houses at least a portion of a heat device for adjusting the temperature of air supplied to the vehicle interior V1. The heat device housing 14 of the vehicle air conditioning unit 1 is located in the vehicle interior V1, and the filter housing 12 and the fan housing 13 are disposed in a space separated from the vehicle interior V1 by a baffle DP. Furthermore, the portion between the fan housing 13 and the heat device housing 14 of the vehicle air conditioning unit 1 is disposed through the baffle DP. Thus, by arranging the filter housing 12 and the fan housing 13 in a space separated from the vehicle interior V1, the space in the vehicle interior V1 can be ensured compared to the structure in which the filter housing 12 and the fan housing 13 are arranged in the vehicle interior V1.

[0093] (2) The blower 30 is mounted on the vehicle V in a position where the opening surface of the blower 30 intersects with the horizontal direction. According to this structure, compared with the case where the opening surface of the intake 13a of the blower 30 is in the horizontal direction, the size of the vehicle air conditioning unit 1 in the horizontal direction can be suppressed, and the mounting capability of the vehicle V can be improved.

[0094] (3) The posture for inserting the air filter 22 (i.e., the first posture) is set to a forward-leaning posture in which the front part of the air filter 22 is above the rear part of the vehicle V. In this way, if the filter can be inserted into the insertion port 121 of the air filter 22 in a forward-leaning posture, it has the advantage of facilitating maintenance operations such as replacing the air filter 22.

[0095] (4) The installation posture of the air filter 22 (i.e., the second posture) is set to a rearward tilt posture in which the rear part of the air filter 22 is located above the front part of the vehicle V. According to this structure, the bending of the passage between the air filter 22 and the intake port 13a of the blower 30 is suppressed when the air filter 22 is installed, and maintenance operations such as replacing the air filter 22 are easy to perform.

[0096] (5) The air conditioner housing 10 is provided with a guide 123 for assisting the insertion of the air filter 22 into the filter housing 12 and for changing the posture of the air filter 22 from a first posture to a second posture. According to this structure, it has the advantage of making it easy to tilt the posture of the air filter 22 in the filter housing 12.

[0097] (6) The vehicle air conditioning unit 1 includes an air intake section 11, which switches between internal air circulation (directing internal air to the air filter 22) and external air introduction (directing external air to the air filter 22) by actuating the internal / external air switching door 20. The guide section 123 includes a part that functions as a door seal that contacts and seals the internal / external air switching door 20 during either internal air circulation or external air introduction.

[0098] Thus, if the guide portion 123 is configured to function as a door seal of the internal and external air switching door 20, it is possible to easily achieve a structure that allows the air filter 22 in the filter housing 12 to tilt and a sealing structure for the internal and external air switching door 20.

[0099] (7) The guide portion 123 includes a part that functions as a filter seal when the air filter 22 is installed in the filter housing 12 in a second position, and contacts and seals the air filter 22. In this way, if the guide portion 123 functions as a filter seal, it is possible to easily achieve a structure that tilts the position of the air filter 22 in the filter housing 12 and a sealing structure for the air filter 22.

[0100] (8) The filter receiving part 12 includes a filter cover 124 that closes the insertion port 121. The filter cover 124 includes a cover portion 124a that covers the insertion port 121 and a fixing portion 124b that contacts the air filter 22 to maintain the position of the air filter 22 in a second position. According to this structure, when the insertion port 121 is closed with the filter cover 124, the position of the air filter 22 can be fixed in the second position.

[0101] (9) Specifically, the air filter 22 is installed in a position (i.e., the second position) where the filter angle θf is less than a right angle. According to this structure, it is possible to suppress the bending of the passage between the air filter 22 and the intake port 13a of the blower 30 when the air filter 22 is installed.

[0102] (Second Implementation)

[0103] Next, refer to Figure 9 The second embodiment will be described. In this embodiment, the differences from the first embodiment will be mainly described.

[0104] like Figure 9 As shown, the air supply module 1B of the vehicle air conditioning unit 1 in this embodiment is not located in the front space V0, which is the external space, but is located in the vehicle interior V1.

[0105] The heat storage section 14 and the fan storage section 13 of the vehicle air conditioning unit 1 are located in the vehicle interior V1, and the filter storage section 12 is disposed in a space separated from the vehicle interior V1 by a baffle DP. Furthermore, the portion between the fan storage section 13 and the filter storage section 12 of the vehicle air conditioning unit 1 is disposed through the baffle DP. Thus, by configuring the filter storage section 12 in a space separated from the vehicle interior V1, compared to configuring the filter storage section 12 in the vehicle interior V1, the space in the vehicle interior V1 can be ensured.

[0106] In other respects, it is the same as the first embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the first embodiment by having a configuration that is common to or equivalent to that of the first embodiment.

[0107] (Third Implementation)

[0108] Next, refer to Figure 10 , Figure 11 The third embodiment will be described. In this embodiment, the differences from the first embodiment will be mainly described.

[0109] like Figure 10 , Figure 11 As shown, the blower 30 of this embodiment is mounted on the vehicle V with the opening surface of the inlet 13a inclined relative to the horizontal direction. Specifically, the blower 30 is positioned such that the rear portion is above the front portion.

[0110] In the vehicle air conditioning unit 1 of this embodiment, as follows: Figure 10As shown, the filter housing 12 is provided with an insertion port 121 for inserting the air filter 22 into the air conditioning housing 10 in a first posture where the filter angle θf exceeds a predetermined reference angle. The first posture is a forward-leaning posture in which the front part of the air filter 22 is located above the rear part of the vehicle V.

[0111] In addition, such as Figure 11 As shown, the filter housing 12 is provided with space for tilting the air filter 22 from the first posture described above to a second posture where the filter angle θf is below the reference angle. Furthermore, the air filter 22 is mounted relative to the filter housing 12 in the second posture. The second posture is a rearward tilting posture in which the rearward portion of the air filter 22 is positioned above the frontward portion of the vehicle V.

[0112] Specifically, the air filter 22 is disposed in the filter housing 12 such that it is opposite to the blower 30 along the axial direction CL. The air filter 22 and the blower 30 are configured such that the ventilation surface 220 and the opening surface of the inlet 13a are substantially parallel.

[0113] In this embodiment, the vehicle air conditioning unit 1 is configured such that the air filter 22 and the blower 30 are opposite each other in the axial direction CL, and the air vent 220 of the air filter 22 and the opening surface of the intake 13a of the blower 30 are substantially parallel.

[0114] According to this structure, since the air ventilation path between the air filter 22 and the blower 30 extends linearly along the axial direction CL of the blower 30, air stripping caused by the curved path is suppressed. As a result, deviations in the air velocity distribution near the intake 13a of the blower 30 are suppressed. Therefore, the deterioration of air delivery performance caused by deviations in the air velocity distribution near the intake 13a of the blower 30 can be suppressed.

[0115] In other respects, it is the same as the first embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the first embodiment by having a configuration that is common to or equivalent to that of the first embodiment.

[0116] (Fourth Implementation)

[0117] Next, refer to Figure 12 , Figure 13 The fourth embodiment will be described. In this embodiment, the differences from the first embodiment will be mainly described.

[0118] like Figure 12As shown, in the vehicle air conditioning unit 1, in order to set the switching between indoor and outdoor air in different spaces on the right and left sides of the vehicle interior, the internal space of the air conditioning housing 10 is divided into a right space 10A and a left space 10B by a partition plate 15.

[0119] like Figure 13 As shown, the dividing plate 15 is configured with a plate-shaped dividing portion 150 that divides a portion of the space on the upstream side of the air filter 22 into two spaces. The dividing portion 150 has a shape (in this example, a trapezoidal shape) capable of dividing the space between the air filter 22 and the first component 123a of the guide portion 123 into two spaces. Furthermore, in Figure 13 In order to show the shape of the dividing section 150, a dot pattern is given to the dividing section 150, but the dot pattern is not actually given to the dividing section 150.

[0120] After the air filter 22 is housed in the filter housing 12, a dividing section 150 is provided. The dividing section 150 is configured to be removable from the insertion port 121. In this embodiment, the dividing section 150 is configured as a one-piece molded part integrally formed with the filter cover 124 that closes the insertion port 121. In addition, the dividing section 150 functions as a fixing part 151 that contacts the air filter 22 at its lower end and maintains the air filter 22 in a second posture.

[0121] In other respects, it is the same as the first embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the first embodiment by having a configuration that is common to or equivalent to that of the first embodiment.

[0122] The vehicle air conditioning unit 1 of this embodiment has the following features.

[0123] (1) The vehicle air conditioning unit 1 includes a partition 150 that divides a portion of the space upstream of the airflow of the air filter 22 into two spaces. This partition 150 is configured to be accessible from the insertion port 121. With this configuration, for example, the space necessary for tilting the air filter 22 can also be divided into two spaces by the partition 150. Thus, for example, the switching between indoor and outdoor air can be set differently in the space on the right side and the space on the left side of the vehicle interior.

[0124] (2) The dividing part 150 is integrally formed with the filter cover 124 that closes the insertion port 121, and includes a fixing part 151 that contacts the air filter 22 to maintain the position of the air filter 22 in a second position. According to this structure, when the insertion port 121 is closed with the filter cover 124, a portion of the space upstream of the airflow of the air filter 22 can be divided into two spaces, and the position of the air filter 22 can be fixed in the second position.

[0125] (A variation of the fourth embodiment)

[0126] It is desirable that the dividing section 150 is integrally formed with the filter cover 124 that closes the insertion port 121, but it may also be formed separately from the filter cover 124. In addition, it is desirable that the dividing section 150 includes a fixing part 151 that contacts the air filter 22 to maintain the position of the air filter 22 in a second position, but this may not be the case.

[0127] (Fifth Implementation)

[0128] Next, refer to Figure 14 , Figure 15 The fifth embodiment will be described. In this embodiment, the differences from the fourth embodiment will be mainly described.

[0129] like Figure 14 As shown, the dividing section 150 has: a first portion 150a integrally formed with the filter cover 124; and a second portion 150b integrally formed with the air filter 22. The first portion 150a includes a portion that contacts the first component 123a of the guide portion 123. The second portion 150b includes a portion that contacts the air filter 22. To allow for insertion and removal from the insertion port 121 along with the air filter 22, the second portion 150b extends from a portion of the upper surface of the air filter 22 near the insertion port 121 in a direction intersecting the venting surface 220. In the installed state of the air filter 22, the second portion 150b extends obliquely relative to the venting surface 220, facing the insertion port 121.

[0130] While referring to Figure 15 The method for setting the dividing section 150 thus configured will be explained. First, the second part 150b of the dividing section 150, together with the air filter 22, is inserted into the filter housing 12 through the insertion port 121. At this time, the second part 150b is inserted into the filter housing 12 by slowly tilting the air filter 22 from a first position to a second position. When the insertion of the second part 150b of the dividing section 150 is completed, after the first part 150a is inserted into the filter housing 12, the insertion port 121 is blocked with the filter cover 124. In this way, the dividing section 150 of this embodiment is set inside the filter housing 12.

[0131] In other respects, it is the same as in the fourth embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the fourth embodiment by having a configuration that is common to or equivalent to that of the fourth embodiment.

[0132] (Sixth Implementation Method)

[0133] Next, refer to Figure 16 , Figure 17 The sixth embodiment will be described. In this embodiment, the differences from the fourth embodiment will be mainly described.

[0134] like Figure 16 As shown, the dividing portion 150 is integrally formed with the air filter 22, not with the filter cover 124. The dividing portion 150 is, for example, configured as a single-piece molded component integrally formed with the frame of the air filter 22. The dividing portion 150 includes a portion that contacts the first component 123a of the guide portion 123 and a portion that contacts the air filter 22. To allow for removal and insertion from the insertion port 121 along with the air filter 22, the dividing portion 150 extends from the upper surface of the air filter 22 near the insertion port 121 in a direction intersecting the venting surface 220. In the installed state of the air filter 22, the dividing portion 150 extends obliquely relative to the venting surface 220, facing towards the insertion port 121.

[0135] While referring to Figure 17 The method for setting the dividing section 150 as configured will be explained below. First, the dividing section 150 and the air filter 22 are inserted into the filter housing 12 through the insertion port 121. At this time, the dividing section 150 is inserted into the filter housing 12 by slowly tilting the air filter 22 from a first position to a second position. When the insertion of the dividing section 150 is complete, the insertion port 121 is blocked with the filter cover 124. In this way, the dividing section 150 of this embodiment is set inside the filter housing 12.

[0136] In other respects, it is the same as in the fourth embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the fourth embodiment by having a configuration that is common to or equivalent to that of the fourth embodiment.

[0137] (Seventh Implementation)

[0138] Next, refer to Figure 18 , Figure 19 The seventh embodiment will be described. In this embodiment, the differences from the fourth embodiment will be mainly described.

[0139] like Figure 18As shown, a guide wall 125 is provided in the air conditioner housing 10. When gravity or external force is applied to the air filter 22 during insertion, the guide wall 125 guides the air filter 22 from a first position to a second position. Like the guide portion 123, the guide wall 125 has a shape that protrudes from the inner surface of the filter receiving portion 12. The guide wall 125 is implemented, for example, by ribs formed on the inner surface of the air conditioner housing 10, having an uneven inner wall shape.

[0140] The guide wall 125 is provided in a manner connected to the second component 123b of the guide portion 123. The guide wall 125 is configured to contact the rear end of the air filter 22 when the air filter 22 is inserted. The guide wall 125 is curved in an arc shape in a manner that causes the air filter 22 to gradually tilt from a first position to a second position when the air filter 22 is received in the filter receiving portion 12.

[0141] like Figure 19 As shown, the air filter 22 of the vehicle air conditioning unit 1, configured in this way, is inserted into the filter housing 12 through the insertion port 121. Furthermore, when the air filter 22 moves inwards into the filter housing 12 due to its own weight, or when the air filter 22 is pressed into the filter housing 12, the rear end of the air filter 22 contacts the arc-shaped guide wall 125. As a result, the air filter 22 gradually tilts from a first position to a second position, and the insertion of the air filter 22 is completed.

[0142] In other respects, it is the same as in the fourth embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the fourth embodiment by having a configuration that is common to or equivalent to that of the fourth embodiment.

[0143] The vehicle air conditioning unit 1 of this embodiment has the following features.

[0144] (1) A guide wall 125 is provided in the air conditioner housing 10. When gravity or external force is applied to the air filter 22 during insertion, the guide wall 125 guides the posture of the air filter 22 from a first posture to a second posture. According to this structure, it has the advantage that, for example, the posture of the air filter 22 in the filter housing 12 can be tilted simply by pressing the air filter 22 in.

[0145] (Eighth Implementation)

[0146] Next, refer to Figure 20 , Figure 21 The eighth embodiment will be described. In this embodiment, the differences from the seventh embodiment will be mainly described.

[0147] In this embodiment, the vehicle air conditioning unit 1, regarding the air conditioning housing 10 and the air filter 22, investigated how to maintain the posture of the air filter 22 in a second posture. Specifically, as... Figure 20 As shown, the air conditioner housing 10 is provided with a locking part 16 for engaging with a convex engaging part 221 provided on the air filter 22. The locking part 16 is formed by a recess formed in the filter housing 12. More specifically, the locking part 16 is formed in the filter housing 12 at a portion opposite to the rear end of the air filter 22 which is in the second position.

[0148] On the other hand, the air filter 22 is provided with an engaging portion 221, which engages with the locking portion 16 when the air filter 22 is tilted to a second position. The engaging portion 221 is formed by a protrusion added to the side end of the air filter 22. More specifically, the engaging portion 221 is formed at the rear end of the air filter 22.

[0149] In this configuration, the air filter 22 of the vehicle air conditioning unit 1 is inserted into the filter housing 12 through the insertion port 121, and the air filter 22 tilts from a first position to a second position. When the air filter 22 is in the second position, for example... Figure 21 As shown, the engaging portion 221 of the air filter 22 engages with the locking portion 16 provided in the filter housing portion 12. As a result, the position of the air filter 22 is maintained in the second position.

[0150] In other respects, it is the same as in the seventh embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the seventh embodiment by having a configuration that is common to or equivalent to that of the seventh embodiment.

[0151] The vehicle air conditioning unit 1 of this embodiment has the following features.

[0152] (1) The vehicle air conditioning unit 1 is provided with a locking part 16 relative to the air conditioning housing 10, and is provided with a locking part 221 relative to the air filter 22, which engages with the locking part 16 when the air filter 22 is tilted to a second position. According to this structure, the position of the air filter 22 can be fixed in the second position by a simple method.

[0153] (Ninth Implementation)

[0154] Next, refer to Figure 22 , Figure 23 The ninth embodiment will be described. In this embodiment, the differences from the eighth embodiment will be mainly described.

[0155] like Figure 22As shown, the air filter 22 is provided with a locking portion 222 for engaging with a convex engaging portion 17 provided on the air conditioner housing 10. This locking portion 222 is formed by a recess formed at a side end of the air filter 22. More specifically, the locking portion 222 is formed at the rear end of the air filter 22.

[0156] On the other hand, the air conditioner housing 10 is provided with a locking part 17, which engages with the locking part 222 when the air filter 22 is tilted to a second position. The locking part 17 is formed by a protrusion formed in the filter receiving part 12. More specifically, the locking part 17 is formed in the filter receiving part 12 at a portion opposite to the rear end of the air filter 22 in the second position.

[0157] In this configuration, the air filter 22 of the vehicle air conditioning unit 1 is inserted into the filter housing 12 through the insertion port 121, and the air filter 22 tilts from a first position to a second position. When the air filter 22 is in the second position, for example... Figure 23 As shown, the engaging portion 17 of the filter housing 12 provided on the air conditioner housing 10 engages with the locking portion 222 provided on the air filter 22. As a result, the position of the air filter 22 is maintained in the second position.

[0158] In other respects, it is the same as in the seventh embodiment. The vehicle air conditioning unit 1 of this embodiment can obtain the same effects as the seventh embodiment by having a configuration that is common to or equivalent to that of the seventh embodiment.

[0159] (Other implementation methods)

[0160] The above describes representative embodiments of the present disclosure, but the present disclosure is not limited to the above embodiments, and various modifications can be made, for example, as follows.

[0161] The vehicle air conditioning unit 1 of the above embodiment is configured such that the heat storage section 14 is located in the vehicle interior V1, and the filter storage section 12 is located in a space separated from the vehicle interior V1 by a baffle DP, but is not limited thereto. The vehicle air conditioning unit 1 may also be configured such that both the heat storage section 14 and the filter storage section 12 are located in the vehicle interior V1.

[0162] As described in the above embodiment, the blower 30 is mounted on the vehicle V with the opening surface of the inlet 13a intersecting the horizontal direction, but it is not limited thereto. The blower 30 may also be mounted on the vehicle V with the opening surface of the inlet 13a in a horizontal direction.

[0163] In the above embodiment, the first posture of the air filter 22 is exemplified as a forward-leaning posture in which the front part of the air filter 22 is located above the rear part of the vehicle V. However, it is not limited to this. The first posture of the air filter 22 can be any posture in which the filter angle θf is larger than the second posture. For example, it can also be set as a posture in which the air vent 220 of the air filter 22 is horizontal.

[0164] In the above embodiments, the second posture of the air filter 22 can be any posture in which the filter angle θf is smaller than the first posture, or it can be set to a posture in which the air vent 220 in the air filter 22 is horizontal.

[0165] As described in the above embodiment, a guide portion 123 is provided relative to the air conditioner housing 10 to assist the insertion of the air filter 22 into the filter housing 12 and to change the posture of the air filter 22 from a first posture to a second posture, but this is not a limitation. The guide portion 123 may also be configured as a separate component from the air conditioner housing 10. The guide portion 123 may also be configured solely as a component that assists the insertion of the air filter 22 into the filter housing 12. The guide portion 123 may also be configured solely as a component that changes the posture of the air filter 22 from the first posture to the second posture. Furthermore, the guide portion 123 is not essential and may be omitted.

[0166] It is desirable that the guide portion 123 be configured as part of the embodiment described above, serving as a door sealing portion that contacts and seals the internal and external air switching door 20, but it may not be configured in this way.

[0167] It is desirable that the guide portion 123 be configured as part of the embodiment described above, serving as a filter sealing portion that contacts and seals the air filter 22, but it may not be configured in this way.

[0168] As is desired in the embodiment described above, the filter cover 124 is configured to include a cover portion 124a that covers the insertion port 121 and a fixing portion 124b that maintains the position of the air filter 22 in a second position, but it may not be configured in this way.

[0169] It is desirable that, as in the implementation described above, the second posture is set to a posture where the filter angle θf is below a right angle, but it is not necessary to do so.

[0170] In the above embodiment, a vehicle air conditioning unit 1 is shown as a centrally located layout, but the vehicle air conditioning unit 1 may also be configured such that a portion of it is offset toward the right or left side of the vehicle V.

[0171] In the above embodiments, the elements constituting the embodiments are not necessarily essential, except where they are specifically stated to be necessary or are obviously considered necessary in principle.

[0172] In the above embodiments, when the number, value, quantity, range, or other numerical values ​​of the constituent elements of the embodiments are mentioned, they are not limited to that specific number, except where they are specifically indicated as necessary or where they are clearly limited to a specific number in principle.

[0173] In the above embodiments, when referring to the shape, positional relationship, etc. of constituent elements, etc., the reference is not limited to that shape, positional relationship, etc., except as specifically stated or as limited in principle to a specific shape, positional relationship, etc.

[0174] [This is a public statement]

[0175] [First Viewpoint]

[0176] A vehicle air conditioning unit, comprising:

[0177] Air conditioner housing (10), which forms an air ventilation path;

[0178] A blower (30) is used to generate airflow toward the vehicle interior in the ventilation duct; and

[0179] An air filter (22) is disposed upstream of the airflow from the blower.

[0180] The air conditioner housing includes a filter housing (12) that houses the air filter.

[0181] When the angle between the air vent (220) on the blower side of the air filter and the opening surface of the blower's inlet is defined as the filter angle,

[0182] An insertion port (121) is provided in the filter housing for inserting the air filter into the interior of the air conditioning housing in a first posture where the filter angle exceeds a predetermined reference angle. A space is provided in the filter housing for allowing the air filter to tilt from the first posture to a second posture where the filter angle is below the reference angle.

[0183] The air filter is installed in the filter housing in the second position.

[0184] [Second Viewpoint]

[0185] According to the vehicle air conditioning unit described in the first viewpoint, the air conditioning housing includes a heat device housing (14) that houses at least a portion of heat devices (40, 50) that adjust the temperature of air supplied to the vehicle interior.

[0186] The heat-generating equipment housing is located in the vehicle interior and the filter housing is located in a space separated from the vehicle interior by a baffle (DP) relative to the vehicle interior, with the baffle extending through the baffle.

[0187] [Third Viewpoint]

[0188] According to the first or second viewpoint, the vehicle air conditioning unit is wherein the blower is mounted on the vehicle (V) in an orientation in which the opening surface intersects the horizontal direction.

[0189] [Fourth viewpoint]

[0190] According to any one of the first to third viewpoints, the vehicle air conditioning unit, wherein the first posture is a forward-leaning posture in which the front part of the air filter is located above the rear part.

[0191] [Fifth Viewpoint]

[0192] According to any one of the first to fourth viewpoints, the vehicle air conditioning unit, wherein the second posture is a posture in which the air vent surface in the air filter is horizontal, or a posture in which the rearward portion of the air filter is located above the frontward portion of the vehicle.

[0193] [Sixth Viewpoint]

[0194] According to any one of the first to fifth viewpoints, the vehicle air conditioning unit is provided with a guide (123) relative to the air conditioning housing, the guide being used to assist the insertion of the air filter into the filter housing and to change the posture of the air filter from the first posture to the second posture.

[0195] [Seventh Viewpoint]

[0196] According to the sixth point of view, the vehicle air conditioning unit includes an air intake section (11) that switches between internal air circulation (directing internal air to the air filter) and external air introduction (directing external air to the air filter) by actuating an internal / external air switching door (20).

[0197] The guide section includes door sealing sections (123a, 123c), which contact the internal / external air switching door and seal it in one of the internal air circulation and external air introduction.

[0198] [Eighth Viewpoint]

[0199] According to the sixth or seventh viewpoint, the vehicle air conditioning unit includes a filter sealing portion (123c, 123d) that contacts and seals the air filter when the air filter is installed in the filter housing in the second position.

[0200] [Ninth Viewpoint]

[0201] According to any one of the first to eighth viewpoints, the vehicle air conditioning unit includes a filter cover (124) in the filter receiving section that closes the insertion port.

[0202] The filter cover includes a cover portion (124a) and a fixing portion (124b), the cover portion covering the insertion port and the fixing portion (124b) contacting the air filter and maintaining the air filter in the second posture.

[0203] [Tenth Viewpoint]

[0204] According to any one of the first to ninth viewpoints, the vehicle air conditioning unit, wherein the second posture is a posture in which the filter angle is less than a right angle.

[0205] [Eleventh Viewpoint]

[0206] According to any one of the first to third viewpoints, the vehicle air conditioning unit includes a partition (150) that divides the space of the air filter located upstream of the airflow into two spaces.

[0207] The dividing section is configured to be able to be inserted or removed from the insertion port.

[0208] [Twelfth Viewpoint]

[0209] According to the eleventh viewpoint, the vehicle air conditioning unit is integrally formed with a filter cover (124) that closes the insertion port, and includes a fixing part (151) that contacts the air filter and maintains the air filter in the second position.

[0210] [Thirteenth Viewpoint]

[0211] According to any one of the first to third viewpoints, the vehicle air conditioning unit is provided with a guide wall (125) in the air conditioning housing, which guides the air filter from the first position to the second position when gravity or external force is applied to the air filter during the insertion of the air filter.

[0212] [Fourteenth Viewpoint]

[0213] According to any one of the first to third viewpoints, the vehicle air conditioning unit has a locking part (222, 16) provided relative to one of the air filter and the air conditioning housing, and an engaging part (221, 17) provided relative to the other, the engaging part engaging with the locking part when the air filter is tilted to the second position.

[0214] [Fifteenth Viewpoint]

[0215] According to any one of the first to third viewpoints, in the vehicle air conditioning unit, a guide wall (125) is provided in the air conditioning housing. When gravity or an external force is applied to the air filter during insertion, the guide wall guides the air filter's position from a first position to a second position.

[0216] A locking part (222, 16) is provided relative to one of the air filter and the air conditioner housing, and an engaging part (221, 17) is provided relative to the other. The engaging part engages with the locking part when the air filter is tilted to the second position.

Claims

1. A vehicle air conditioning unit, characterized in that, have: Air conditioner housing (10), which forms an air ventilation path; A blower (30) is used to generate airflow toward the vehicle interior in the ventilation duct; as well as An air filter (22) is disposed upstream of the airflow from the blower. The air conditioner housing includes a filter housing (12) that houses the air filter. When the angle between the air vent (220) on the blower side of the air filter and the opening surface of the blower's inlet is defined as the filter angle, An insertion port (121) is provided in the filter housing for inserting the air filter into the interior of the air conditioning housing in a first posture where the filter angle exceeds a predetermined reference angle. A space is provided in the filter housing for allowing the air filter to tilt from the first posture to a second posture where the filter angle is below the reference angle. The air filter is installed in the filter housing in the second position.

2. The vehicle air conditioning unit according to claim 1, characterized in that, The air conditioning housing includes a heat device housing (14) that houses at least a portion of heat devices (40, 50) that regulate the temperature of the air supplied to the vehicle interior. The heat-generating equipment housing is located in the vehicle interior and the filter housing is located in a space separated from the vehicle interior by a baffle (DP) relative to the vehicle interior, with the baffle extending through the baffle.

3. The vehicle air conditioning unit according to claim 2, characterized in that, The blower is mounted on the vehicle (V) in an orientation in which the opening surface intersects with the horizontal direction.

4. The vehicle air conditioning unit according to claim 2 or 3, characterized in that, The first posture is a forward-leaning posture in which the front part of the vehicle in the air filter is located above the rear part.

5. The vehicle air conditioning unit according to claim 2 or 3, characterized in that, The second posture is either a horizontal posture where the air vent in the air filter is positioned horizontally, or a backward tilted posture where the rear portion of the air filter is positioned above the front portion of the vehicle.

6. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, A guide (123) is provided relative to the air conditioner housing. The guide is used to assist the insertion of the air filter into the filter housing and to change the posture of the air filter from the first posture to the second posture.

7. The vehicle air conditioning unit according to claim 6, characterized in that, It has an air intake (11) that switches between internal air circulation (directing internal air to the air filter) and external air introduction (directing external air to the air filter) by actuating an internal / external air switching door (20). The guide section includes door sealing sections (123a, 123c), which contact the internal / external air switching door and seal it in one of the internal air circulation and external air introduction.

8. The vehicle air conditioning unit according to claim 6, characterized in that, The guide portion includes filter sealing portions (123c, 123d) that contact and seal the air filter when it is installed in the filter housing portion in the second position.

9. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, The filter housing includes a filter cover (124) that closes the insertion port. The filter cover includes a cover portion (124a) and a fixing portion (124b), the cover portion covering the insertion port and the fixing portion (124b) contacting the air filter and maintaining the air filter in the second posture.

10. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, The second posture is when the filter angle is less than a right angle.

11. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, It includes a dividing section (150) that divides a portion of the space of the air filter located upstream of the airflow into two spaces. The dividing section is configured to be able to be inserted or removed from the insertion port.

12. The vehicle air conditioning unit according to claim 11, characterized in that, The dividing part is integrally formed with the filter cover (124) that closes the insertion port, and includes a fixing part (151) that contacts the air filter and maintains the air filter in the second position.

13. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, The air conditioner housing is provided with a guide wall (125) that guides the air filter from the first position to the second position when gravity or external force is applied to the air filter during insertion.

14. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, A locking part (222, 16) is provided relative to one of the air filter and the air conditioner housing, and an engaging part (221, 17) is provided relative to the other. The engaging part engages with the locking part when the air filter is tilted to the second position.

15. The vehicle air conditioning unit according to any one of claims 1 to 3, characterized in that, The air conditioner housing is provided with a guide wall (125). When gravity or external force is applied to the air filter during insertion, the guide wall guides the air filter from the first position to the second position. A locking part (222, 16) is provided relative to one of the air filter and the air conditioner housing, and an engaging part (221, 17) is provided relative to the other. The engaging part engages with the locking part when the air filter is tilted to the second position.

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