JP7481286B2 - Air conditioning equipment - Google Patents

Description

The present invention relates to an air conditioning device.

Conventionally, a filter mounting structure for an air conditioner has been proposed, for example, in Patent Document 1. The air conditioner includes a case in which an air passage is provided, and a filter that is attached to the case. The case has an installation window provided in a side wall. The filter is inserted into the case through the installation window and is fixed to the case. The filter can be removed from the case.

Japanese Patent Application Laid-Open No. 7-172164

However, in the above conventional technology, the filter can only be attached or detached from the case in the direction in which the mounting window is open. In other words, the attachment or detachment direction is only one direction. This makes it difficult to attach or detach the filter in another direction from the case. To attach or detach the filter in another direction from the case, it is necessary to prepare a separate case that allows the filter to be attached or detached in the other direction.

For example, the direction in which the filter can be easily attached and removed varies depending on where the air conditioner is installed. Therefore, it is desirable to be able to easily attach and remove the filter no matter where the air conditioner is installed, without having to prepare a case that corresponds to where the air conditioner is installed.

In view of the above, the present invention aims to provide an air conditioner that allows the filter to be attached and detached in various directions relative to the case.

To achieve the above object, in the invention described in claim 1, the air conditioner includes an air conditioner case (110), a folder (130), a detachable part (150-152), and a filter (170).

The case has an air intake port (111). The folder is a flat frame and is placed on the intake port so that its hollow portion overlaps the opening of the intake port. The detachable portion detachably places the folder on the intake port of the case. The filter is placed on the folder and purifies the air that is drawn into the case through the intake port of the case.

The folder has rails (135-138) that slide the filter along the plane of the folder and support the filter in a removable state along the sliding direction. The folder is removably installed on the suction port of the case by the attachment/detachment part with the sliding direction set to any direction among the surface directions of the folder's plane.

The filter can be attached to and detached from the folder in any direction with the folder placed on the suction port of the case by the attachment/detachment part, and can be attached to and detached from the suction port of the case by the attachment/detachment part with the folder attached.
The suction mouth portion has a protrusion (120) that protrudes toward the outside of the case in a vertical direction perpendicular to the plane of the folder and surrounds the opening of the suction mouth portion.
The protrusion has a square outer shape in a plane of the folder.The folder has a square outer shape in a plane of the folder.
The protruding portion of the suction port is fitted into the folder, whereby the folder is placed on the suction port of the case.

According to this, the folder can be attached and detached to the suction port of the case by the attachment/detachment part. Therefore, the folder can be placed at the suction port so that the filter can be attached and detached in any direction. Also, the filter can be attached and detached to the suction port with the filter attached to the folder. Therefore, the filter can be attached and detached in various directions to the case.

The symbols in parentheses for each means described in this section and in the claims indicate the corresponding relationship with the specific means described in the embodiments described below.

1 is a perspective view of an air conditioning device according to an embodiment; FIG. 2 is an exploded perspective view of the air conditioning device shown in FIG. 1 . FIG. FIG. FIG. FIG. 13 is a diagram showing a state in which a folder is fixed to a case so that a filter can be attached and detached in one direction. FIG. 13 is a diagram showing a state in which the folder is fixed to the case so that the filter can be attached and detached in the other direction. FIG. IX-IX cross-sectional view of FIG. 7. XX cross-sectional view of Figure 7. XI-XI cross-sectional view of FIG. 7. FIG. FIG. FIG. 13 is a diagram showing a state in which a filter is attached and detached in one direction. 13 is a diagram showing the state in which the filter is attached and detached in the other direction. FIG. 13 is a diagram showing how a filter is attached and detached in a direction perpendicular to the plane of the folder. FIG. FIG. 1 is a diagram showing an arrangement of an air conditioner in a vehicle cabin.

One embodiment will be described below with reference to the drawings. The air conditioner according to this embodiment is mounted on a vehicle. Vehicles include general vehicles such as automobiles, large vehicles such as trucks and buses, and agricultural construction vehicles such as construction machinery and farm machinery. Agricultural construction vehicles include, for example, hydraulic excavators, bulldozers, and tractors. The vehicle is not limited to vehicles that move with tires, and may be a vehicle that moves with crawlers.

As shown in Figures 1 and 2, the air conditioner 100 includes an air conditioner case 110, a flat frame-shaped folder 130, a number of rivets 150-152, and a filter 170.

The case 110 is a housing part with an air passage inside. The case 110 has an air intake section 111, multiple flange sections 112 to 117, an air blower section 118, and a temperature adjustment section 119.

The suction port 111 is an opening for drawing air into the inside of the case 110. As shown in Figs. 2 to 4, the suction port 111 has a protrusion 120. The protrusion 120 is a portion that protrudes outward in a direction perpendicular to the plane of the folder 130. The protrusion 120 is shaped to completely surround the opening of the suction port 111. As shown in Fig. 3, the protrusion 120 has a square outer shape on the plane of the folder 130.

As shown in Figures 2 and 3, the flanges 112 to 117 are flange-shaped parts for fixing the folder 130 to the suction port 111. The folder 130 is fixed to the suction port 111 by the three flanges 112 to 114, or by the three flanges 115 to 117.

Here, as shown in FIG. 2, the direction in which the folder 130 and the filter 170 are arranged on the plane of the folder 130 is defined as one direction. Also, on the plane of the folder 130, the direction perpendicular to the one direction is defined as the other direction.

The flange portion 112 and the flange portion 113 are provided at a distance from each other at one end 121 of the suction port portion 111 in one direction. The flange portion 114 is provided at the other end 122 of the suction port portion 111 in one direction.

The flange portion 115 and the flange portion 116 are provided at a distance from each other at one end 123 of the suction port portion 111 in the other direction. The one end 123 is the end of the suction port portion 111 opposite the temperature adjustment portion 119. The flange portion 117 is provided at the other end 124 of the suction port portion 111 in the other direction.

The blower 118 is an air passage that blows air drawn in from the suction port 111 to the temperature adjustment unit 119. The blower 118 houses a centrifugal fan 125. The centrifugal fan 125 rotates by a motor unit 126 installed in the case 110. The suction port 111 is provided on the blower 118 on the side of the centrifugal fan 125 opposite the motor unit 126. The centrifugal fan 125 draws air in the axial direction of the rotating shaft from the area opposite the motor unit 126 through the suction port 111, and blows out the drawn air in the radial direction of the rotating shaft.

The temperature adjustment unit 119 is an air passage that adjusts the temperature of the air sent from the blower unit 118. The temperature adjustment unit 119 houses, for example, a heater core 127. The heater core 127 is a heat exchanger that exchanges heat between engine coolant supplied by a pump (not shown) and the air sent from the blower unit 118 to heat the air. In other words, the air conditioner 100 is a hot water type heating device. The temperature adjustment unit 119 may house a PTC (Positive Temperature Coefficient) heater. Alternatively, the temperature adjustment unit 119 may house a combustion heater that uses gasoline, diesel, or the like as an energy source.

The temperature adjustment unit 119 may house an evaporator. The evaporator, together with a compressor, a condenser, an expansion valve, and the like, constitutes a vapor compression refrigeration cycle. In this case, the air conditioner 100 is a cooling device. Alternatively, the air conditioner 100 may be configured as a so-called HVAC (Heating Ventilation and Air Conditioning Unit). In this case, the air conditioner 100 is a heating and cooling device that heats and cools air using, for example, a heat pump cycle, a refrigeration cycle, or a combination of these.

The folder 130 is a component for supporting the filter 170. As shown in FIG. 2, the folder 130 is installed in the suction port 111 so that the hollow portion overlaps with the opening of the suction port 111 of the case 110 in the vertical direction. Also, as shown in FIG. 5, the folder 130 has a square outer shape in the plane of the folder 130.

The folder 130 has a folder reinforcement rib 131, multiple fixing portions 132-134, and rails 135-138.

The folder reinforcement rib 131 is a portion that reinforces the folder 130. The folder reinforcement rib 131 has a cross shape in the plane of the folder 130, with a straight portion along the sliding direction and a straight portion along a direction perpendicular to the sliding direction. The sliding direction is the direction in which the filter 170 slides along the plane of the folder 130. In FIG. 2, the sliding direction corresponds to one direction. The folder reinforcement rib 131 is designed to reinforce the folder 130 while reducing the area of the folder 130 in the plane so as not to impede the flow of air passing through the folder 130.

The fixing parts 132-134 are flange-shaped parts for removably fixing the folder 130 to the suction port part 111 of the case 110 by the rivets 150-152. The fixing parts 132 and 133 are provided at a distance from each other at one end 139 of the folder 130 on the side where the filter 170 is inserted in the sliding direction. The insertion side of the folder 130 on which the filter 170 is inserted is the side of the folder 130 on which the filter 170 is placed relative to the folder 130 before the filter 170 is inserted into the folder 130, as shown in FIG. 2. The fixing part 134 is provided at the other end 140 on the opposite side to the one end 139 in the sliding direction.

The fixing portion 132 is fixed to the flange portion 112 or the flange portion 115 by the rivet 150. The fixing portion 133 is fixed to the flange portion 113 or the flange portion 116 by the rivet 151. The fixing portion 134 is fixed to the flange portion 114 or the flange portion 117 by the rivet 152.

Each of the rails 135-138 slides the filter 170 in the sliding direction along the plane of the folder 130, and supports the filter 170 in a removable manner along the sliding direction. Each of the rails 135-138 is provided on both ends 141, 142 of the folder 130 in the direction perpendicular to the sliding direction on the plane of the folder 130.

Rails 135 and 136 are provided intermittently along the sliding direction at end 141. That is, rails 135 and 136 are provided at a distance from each other. Similarly, rails 137 and 138 are provided intermittently along the sliding direction at end 142. Rails 137 and 138 are provided at a distance from each other. That is, by minimizing the volume of rails 135 to 138 at each end 141, 142, the cost of folder 130 can be reduced.

The rail 135 also has an insertion port 143 into which the filter 170 is inserted along the sliding direction. Similarly, the rail 137 has an insertion port 144 into which the filter 170 is inserted along the sliding direction. As shown in FIG. 6, each of the insertion ports 143, 144 has a tapered shape in which the opening size decreases in the direction in which the filter 170 is inserted into the folder 130 along the sliding direction. In other words, each of the insertion ports 143, 144 has a tapered shape in which the opening size increases in the direction in which the filter 170 is removed from the folder 130 along the sliding direction. This makes it easier to insert the filter 170 into the folder 130 along the sliding direction.

Each of the rivets 150 to 152 is a component for repeatedly attaching and detaching the folder 130 to the suction port portion 111 of the case 110. Each of the rivets 150 to 152 is made of a resin material such as nylon.

The rivets 150-152 fix the fixing parts 132-134 of the folder 130 to the flange parts 112-114 of the case 110. As a result, the folder 130 is detachably positioned in the suction port part 111 of the case 110 by the rivets 150-152 with the sliding direction set to any direction among the surface directions of the plane of the folder 130.

That is, the folder 130 is detachably installed in a state where the insertion ports 143, 144 of the rails 135, 137 are oriented in any direction on the plane of the folder 130. Specifically, as shown in FIG. 7, the opening direction of the insertion ports 143, 144 of the rails 135, 137 is oriented in one direction. In other words, the arbitrary direction is, for example, one direction.

On the other hand, each rivet 150-152 can also fix each fixing portion 132-134 of the folder 130 to the flange portions 115-117 of the case 110. That is, the folder 130 is removably installed in a state in which the insertion openings 143, 144 of the rails 135, 137 are oriented in an orthogonal direction perpendicular to the arbitrary direction on the plane of the folder 130. Specifically, as shown in FIG. 8, the opening direction of the insertion openings 143, 144 of the rails 135, 137 is oriented in the other direction. That is, the orthogonal direction perpendicular to the arbitrary direction is, for example, the other direction.

In this way, the folder 130 can be installed in two directions on the plane of the folder 130 relative to the suction port portion 111 of the case 110 so that it can be detached from the suction port portion 111.

The positions of the flanges 112, 113 and 114 may be reversed in the case 110. This allows the folder 130 to be detachably installed in the air inlet 111 so that the insertion ports 143, 144 of the rails 135, 137 face the installation surface of the air conditioner 100 in one direction. Similarly, the positions of the flanges 115, 116 and 117 may be reversed in the case 110. This allows the folder 130 to be detachably installed in the air inlet 111 so that the insertion ports 143, 144 of the rails 135, 137 face the temperature adjustment unit 119 of the case 110 in the other direction.

As shown in Figures 9 to 11, the vertical tip surface 128 of the protrusion 120 of the suction port 111 contacts the folder 130. The entire tip surface 128 of the protrusion 120 contacts the folder 130. This makes it possible to prevent air leakage between the suction port 111 and the folder 130.

As shown in Figs. 2 and 11, the fixing portion 134 of the folder 130 has a base portion 145. The base portion 145 protrudes vertically and is a portion that comes into contact with the filter 170 when the filter 170 is inserted into the folder 130. In other words, the base portion 145 functions as a stopper that determines the position of the filter 170 in the sliding direction relative to the folder 130.

The filter 170 is a component for purifying the air drawn into the case 110 through the air inlet 111 of the case 110. The filter 170 is installed in the folder 130.

As shown in Figures 12 and 13, the filter 170 has a frame portion 171, a hook rib 172, a filter reinforcement rib 173, a wind leakage prevention rib 174, a protrusion portion 175, and a filter member 176.

The frame 171 is the main body of the filter 170. The frame 171 has a rectangular outer shape in the plane of the folder 130. In the plane of the folder 130, the width of the frame 171 in the direction perpendicular to the sliding direction is slightly smaller than the outer width of the filter 170. This allows the filter 170 to slide on each of the rails 135 to 138 of the folder 130.

The hook rib 172 is a portion that makes it difficult for the filter 170 to come off the folder 130. As shown in Figures 1 and 10, the hook rib 172 is provided so as to protrude in a vertical direction perpendicular to the plane of the folder 130 at the portion of the frame 171 that corresponds to the rails 135, 137 when the frame 171 is attached to the folder 130.

The portion of frame 171 that corresponds to rail 135 is the portion of frame 171 on the rail 135 side between rail 135 and rail 136. Similarly, the portion of frame 171 that corresponds to rail 137 is the portion of frame 171 on the rail 137 side between rail 137 and rail 138. As a result, hook rib 172 hooks onto rails 135 and 137 in the sliding direction, so that filter 170 does not easily come off folder 130.

The filter reinforcement rib 173 is a portion that reinforces the frame portion 171. In the plane of the folder 130, the filter reinforcement rib 173 has a cross shape in which a straight portion along the sliding direction and a straight portion along a direction perpendicular to the sliding direction intersect. In the plane of the folder 130, the filter reinforcement rib 173 has the same shape and area as the folder reinforcement rib 131.

As shown in Figures 7 and 8, the filter reinforcement rib 173 is attached to the folder 130 so as to overlap the folder reinforcement rib 131 in the vertical direction perpendicular to the plane of the folder 130. For example, the filter 170 is positioned by the base portion 145 of the fixing portion 134 of the folder 130, so that the folder reinforcement rib 131 and the filter reinforcement rib 173 can overlap in the vertical direction. This makes it possible to minimize the reduction in the volume of air passing through the filter 170 and the folder 130.

The wind leakage prevention rib 174 is a portion for eliminating gaps between the frame portion 171 and the folder 130. As shown in FIG. 10, the wind leakage prevention rib 174 is provided on the portion of the frame portion 171 that corresponds to each of the rails 135, 137 when the frame portion 171 is attached to the folder 130. The wind leakage prevention rib 174 may also be provided on the portion of the frame portion 171 that corresponds to each of the rails 136, 138.

The wind leakage prevention rib 174 protrudes in a vertical direction perpendicular to the plane of the folder 130 and contacts each of the rails 135 to 138. The wind leakage prevention rib 174 also presses the opposite surface 177 of the frame portion 171 opposite the side on which the wind leakage prevention rib 174 is provided against the folder 130. The opposite surface 177 is the part of the filter 170 that faces the folder 130 when the filter 170 is attached to the folder 130. This makes the filter 170 tightly contact the folder 130, preventing wind leakage between the filter 170 and the folder 130.

The protrusion 175 is a portion for holding the filter 170. The protrusion 175 is provided on the side of the filter 170 opposite the side that is inserted into the folder 130. The filter member 176 is a sheet-like component that captures foreign matter. The filter member 176 is provided on the filter 170 so as to cover the opening formed by the frame portion 171 and the filter reinforcing rib 173.

The above is the overall configuration of the air conditioning device 100. In the above configuration, the case 110, the folder 130, and the frame portion 171 of the filter 170 are formed from a resin material, a metal material, a composite material of a resin material and a metal material, or the like. The case 110, the folder 130, and the frame portion 171 of the filter 170 may be formed from the same resin material. For example, PP resin, ABS resin, or the like is used as the same resin material.

According to the above configuration, the folder 130 is fixed to the flanges 112-114 of the case 110 by the rivets 150-152. In this case, as shown in FIG. 14, the filter 170 can be attached to and detached from the folder 130 in one direction while the folder 130 is installed in the suction port 111 of the case 110.

The folder 130 is fixed to the flanges 115-117 of the case 110 by the rivets 150-152. In this case, as shown in FIG. 15, the filter 170 can be attached to and detached from the folder 130 in the other direction while the folder 130 is installed in the suction port 111 of the case 110.

Furthermore, as shown in FIG. 16, when the filter 170 is attached to the folder 130, the filter 170 can be attached to and detached from the intake port 111 of the case 110 by the rivets 150 to 152. In this case, the sliding direction of the filter 170 is not affected by the location where the air conditioner 100 is installed. In other words, the sliding direction of the filter 170 can be set in any direction in the planar surface direction of the folder 130.

In the above configuration, the filter 170 can be attached to and detached from the folder 130 in at least two directions in the planar surface direction. The filter 170 can also be attached and detached along a direction perpendicular to the plane of the folder 130. Therefore, the filter 170 can be attached and detached in various directions with respect to the case 110.

The case 110 may be designed with various external shapes depending on the vehicle and location in which the air conditioner 100 is installed. Even in such cases, if the external shape of the protrusion 120 of the intake port 111 is square and the external shape of the folder 130 is also square, the folder 130 can be applied to cases 110 with various external shapes. In other words, parts can be standardized. Therefore, there is no need to prepare a mold for the folder 130 corresponding to the case 110, and the cost of the air conditioner 100 can be reduced.

The air conditioner 100 mounted on a vehicle has limited space. For example, as shown in FIG. 17, the interior 210 of a vehicle 200 such as a construction machine or agricultural machine is small. Even in such an interior environment, the suction port 111 of the case 110 is installed so as to be located in the interior 210 of the vehicle 200. If the air conditioner 100 is placed, for example, under a seat 220 or under the feet of a crew member, it is effective to attach and detach the folder 130 vertically with the filter 170 attached to the folder 130.

Alternatively, when the air conditioner 100 is placed on the floor 230 of the room 210, for example, the filter 170 can be attached and detached in one direction or the other, or the folder 130 can be detached with the filter 170 attached, depending on the position of the air conditioner 100. As long as there is space the thickness of the folder 130, the filter 170 can be attached and detached in one direction or the other. In this way, the filter 170 can be attached and detached in a space-saving manner in the room 210. In particular, the filter 170 can be easily attached and detached in a situation where the suction port portion 111 of the case 110 is placed in a position in the room 210 where it is difficult to attach and remove the filter 170.

Note that the interior 210 of the vehicle 200 does not only refer to the open space, but also includes spaces separated by equipment installed in the interior 210, such as the space under the seat 220, the inside of a cover for protecting the air conditioning device 100, and a space surrounded by a fence.

As described above, the air conditioner 100 allows the filter 170 to be attached and detached in any direction, including any direction in the plane of the folder 130 and directions inclined relative to the plane of the folder 130. This ensures freedom in the direction in which the filter 170 can be attached and detached when mounted in a vehicle, regardless of the orientation of the air conditioner 100, such as horizontal or vertical. In other words, in vehicle design, this improves the ease of service for filter replacement and increases the freedom in the direction in which the air conditioner 100 can be mounted. In addition, it also makes it easier to remove the filter 170 when replacing the filter.

Of course, the filter 170 can improve the durability of the air conditioner 100 and prevent clogging. By not providing the filter 170 to the air conditioner 100, it is possible to prevent a decrease in performance due to heater clogging resulting from motor lock.

In regard to the correspondence between the description of this embodiment and the description of the claims, each of the rivets 150 to 152 corresponds to the "detachable portion" in the claims.

Other Embodiments
The configuration of the air conditioner 100 shown in each of the above embodiments is an example, and the present invention is not limited to the above-described configuration, and other configurations that can realize the present invention may be used. For example, it is not necessary to provide all of the configurations shown in the above embodiments, and they may be selectively adopted as appropriate.

The case 110 may have any shape that allows the folder 130 to be fixed to the suction port 111, and the external shape of the case 110 may be modified as appropriate depending on the vehicle 200 in which it is to be mounted, etc.

The suction port 111 may have an external shape other than a square in the plane of the folder 130. For example, it may be a polygon other than a rectangle, a circle, or an ellipse. Similarly, the folder 130 may have any shape that can be fixed to the suction port 111, and may be a polygon other than a rectangle, a circle, or an ellipse. Even if the folder 130 is a polygon other than a rectangle, a circle, or an ellipse, it is possible to slide and hold the filter 170 as long as it has rails 135-138.

Furthermore, the folder 130 is not limited to being installed on the suction port 111 in two directions, one direction and the other direction, on the plane of the folder 130. In other words, the slide direction of the folder 130 may be set to a desired direction on the plane of the folder 130. This allows the filter 170 to be attached and detached in any direction on the plane of the folder 130.

The rails 135-138 may be provided continuously along the sliding direction at both ends 141, 142 of the folder 130. In this case, the rails 135-138 have grooves in the areas corresponding to the filter 170. The hook ribs 172 of the filter 170 fit into the grooves of the rails 135-138, preventing the filter 170 from easily coming off the folder 130.

The folder reinforcement rib 131 of the folder 130 is not limited to a cross-shaped shape, and may have other shapes. The folder reinforcement rib 131 may be configured as, for example, two parallel straight line segments. The same applies to the filter reinforcement rib 173 of the filter 170.

The number of fixing points of the folder 130 to the suction port portion 111 of the case 110 is not limited to three. In other words, the number of rivets 150-152 is not limited to three. The number of flange portions 112-117 and the number of fixing portions 132-134 can be changed appropriately according to the number of rivets 150-152.

The method of attaching and detaching the folder 130 to the suction port 111 of the case 110 is not limited to the rivets 150-152 which can be repeatedly attached and detached. For example, it may be detached and attached using screws, a magnet, an adhesive tape which can be repeatedly attached and detached, or a suction cup. These correspond to the "detachable part" in the claims.

Alternatively, a slide hook may be used in which one end of the folder 130 is hooked onto the case 110 and the other end is detachably fixed to the case 110 by a claw, snap fit, or the like. In this case, a part of the folder 130 and a part of the case 110 correspond to the "detachable part" in the claims.

The folder 130 may also be partially fixed to the case 110 by a hinge. In this case, the filter 170 can be attached to and detached from the folder 130 with the folder 130 tilted relative to the suction port 111 of the case 110. In this case, the hinge is included in the "detachable part" in the claims.

The filter 170 may be repeatedly attached to and detached from the folder 130 by elastically deforming the filter 170. In other words, with the folder 130 fixed to the suction port portion 111 of the case 110, the filter 170 can be bent vertically to be attached to and detached from the folder 130.

The air conditioner 100 is not limited to being mounted on the vehicle 200, but may be configured as a free-standing type. In this case, too, the filter 170 can be attached and detached in various directions, and the filter 170 can be attached and detached in a space-saving manner.

100 Air conditioner, 110 Case, 111 Intake port, 120 Protrusion, 128 Tip surface, 130 Folder, 131 Folder reinforcement rib, 134 Fixing part, 135-138 Rail, 139 One end, 140 Other end, 143, 144 Insertion port, 145 Base, 150-152 Rivet, 170 Filter, 171 Frame, 172 Hook rib, 173 Filter reinforcement rib, 174 Air leakage prevention rib, 200 Vehicle

Claims (12)

An air conditioning case (110) having an air inlet (111);
A folder (130) having a planar frame shape and installed on the suction port so that a hollow portion of the folder overlaps with an opening of the suction port;
A detachable portion (150 to 152) that detachably installs the folder to the suction port portion of the case;
a filter (170) installed in the folder and cleaning the air drawn into the case through the air inlet of the case;
Including,
the folder has rails (135-138) that slide the filter along a plane of the folder and support the filter in a detachable state along a sliding direction, and is detachably installed on the suction port of the case by the detachment part in a state in which the sliding direction is set to an arbitrary direction among the surface directions of the plane of the folder,
the filter is detachable from the folder in the arbitrary direction in a state where the folder is placed in the suction port of the case by the detachment unit, and the filter is detachable from the suction port of the case by the detachment unit in a state where the filter is attached to the folder,
The suction port portion has a protrusion (120) that protrudes toward the outside of the case in a vertical direction perpendicular to the plane of the folder and surrounds an opening portion of the suction port portion,
the protrusion has a square outer shape in a plane of the folder;
the folder has a square outer shape in a plane of the folder,
An air conditioner , wherein the folder is installed in the suction port of the case by fitting the protrusion of the suction port into the folder . The rail has an insertion port (143, 144) into which the filter is inserted along the sliding direction,
The air conditioning device of claim 1, wherein the folder is removably installed in a plane of the folder in a state where the insertion port of the rail is facing the arbitrary direction and a state where the insertion port of the rail is facing an orthogonal direction perpendicular to the arbitrary direction. 3. The air conditioner according to claim 1, wherein the detachable portion is a rivet that allows the folder to be repeatedly attached to and detached from the case. The filter has a frame (171),
4. An air conditioning device as described in any one of claims 1 to 3, wherein the frame portion has a hooking rib (172) at a portion of the frame portion corresponding to the rail when the frame portion is attached to the folder, the hooking rib protruding in a vertical direction perpendicular to the plane of the folder and hooking onto the rail. 5. The air conditioner according to claim 1 , wherein the rail is provided continuously or intermittently along the sliding direction. The folder has a folder reinforcing rib (131) that reinforces the folder,
6. The air conditioning device according to claim 1, wherein the filter has a frame portion (171) and a filter reinforcement rib (173) that reinforces the frame portion and has the same shape and area as the folder reinforcement rib in the plane of the folder, and is attached to the folder so that the filter reinforcement rib overlaps the folder reinforcement rib in a vertical direction perpendicular to the plane of the folder. The filter has a frame (171),
the frame has a wind leakage prevention rib (174) that protrudes in a vertical direction perpendicular to a plane of the folder and contacts the rail at a portion of the frame that corresponds to the rail when the frame is attached to the folder,
The air conditioning device according to any one of claims 1 to 6, wherein the anti-leakage rib contacts the rail to press the opposite surface (177) of the frame portion opposite the side on which the anti-leakage rib is provided against the folder. The suction port portion has a protrusion (120) that protrudes in a vertical direction perpendicular to the plane of the folder and surrounds an opening portion of the suction port portion,
8. The air conditioner according to claim 1, wherein the protrusion has a tip surface (128) in the vertical direction that entirely contacts the folder. the folder has a fixing portion (134) that is detachably fixed to the case by the detachable portion at the other end (140) of the folder opposite to the one end (139) of the folder on the side where the filter is inserted in the sliding direction,
9. An air conditioning device as described in any one of claims 1 to 8, wherein the fixing portion is a portion that protrudes in a vertical direction perpendicular to the plane of the folder and contacts the filter, and has a base portion (145) as a stopper that determines the position of the filter in the sliding direction relative to the folder. The rail has an insertion port (143, 144) into which the filter is inserted along the sliding direction,
10. The air conditioner according to claim 1 , wherein the insertion opening has a tapered shape such that an opening size becomes smaller in a direction in which the filter is inserted into the folder along the sliding direction. The filter has a frame (171),
11. The air conditioner according to claim 1, wherein the case, the folder, and the frame of the filter are made of the same resin material. 12. The air conditioner according to claim 1, wherein the case is mounted on a vehicle (200) and is installed such that the air inlet portion is located inside a vehicle interior (210).

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