JP2009006888A - Air-conditioning unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning unit having a comparatively simple filter member fixing structure, and easily attaching and detaching a filter member. <P>SOLUTION: The air-conditioning unit 1 is equipped with an air-conditioning case 7, a cooling heat exchanger 10 arranged in the air-conditioning case 7 and cooling air, and a filter member 8 collecting dust included in outside air introduced into the air-conditioning case 7. The air-conditioning case 7 is equipped with a case body 12, and a case upper cover 13 journaled to the case body 12 so as to be opened and closed. The case body 12 has a filter placing portion 17 for placing the filter member 8. The case upper cover 13 has a filter pressing portion. The filter member 8 is put between the filter pressing portion and the filter placing portion 17, and fixed when the case upper cover 13 is closed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning unit suitable for being mounted on a rooftop of a bus vehicle or the like.

  Usually, the air conditioning unit includes a filter for outside air in the case together with a heat exchanger and a blower fan. Patent Document 1 describes a vehicle roof-mounted air conditioner equipped with a filter for outside air. In this air conditioner, when an attempt is made to remove the filter from the air conditioning case for cleaning, Alternatively, it is possible to access the filter from either side of the vehicle roof side, but the filter is screwed to the air conditioning case side via a frame-shaped filter bracket that holds it, so either In some cases, it is necessary to remove the filter bracket by loosening the fixing screw, and when the filter is mounted, it is necessary to screw the filter bracket.

Japanese Patent Laying-Open No. 2005-306165

  Although the filter is reliably fixed by the method shown in the air conditioner described in Patent Document 1, there has been a demand for easier attachment / detachment of the filter and a simpler filter fixing structure.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide an air conditioning unit having a relatively simple filter fixing structure and capable of easily attaching and detaching a filter.

  In order to achieve the above object, the present invention employs the following technical means.

  The invention described in claim 1 is introduced into the air conditioning case (7), the cooling heat exchanger (10) disposed in the air conditioning case (7) to cool the air, and the air conditioning case (7). An air conditioning unit (1) comprising a filter member (8) for capturing dust contained in outside air, wherein the air conditioning case (7) opens and closes to the case body (12) and the case body (12). A case upper lid (13) pivotably mounted, the case body (12) has a filter placement portion (17) for placing the filter member (8), and the case upper lid (13) is a filter. The filter member (8) has a pressing portion, and is characterized by being sandwiched and fixed between the filter pressing portion and the filter placement portion (17) when the case upper lid (13) is closed. According to this, since a member for fixing the filter member (8) is not required and the structure is simplified, the filter member (8) is fixed by closing the case upper lid (13). The member (8) can be easily attached and detached.

  The invention according to claim 2 is characterized in that the filter member (8) is made of an elastic material that is elastically deformable at least in the thickness direction. Thereby, while being able to pinch | interpose and fix a filter member (8) reliably, the allowable dimension error of each member regarding the part which pinches | interposes a filter member (8) can be set large.

  The invention according to claim 3 is characterized in that the filter pressing portion of the case upper lid (13) is formed so as to press the entire peripheral edge portion of the filter member (8). Thereby, it can prevent that air leaks from the side of a filter member (8).

  The invention according to claim 4 is characterized in that the filter mounting portion (17) includes filter positioning means (17d) for arranging the filter member (8) at a predetermined position. Thereby, it is possible to easily position the filter member (8) with respect to the filter mounting portion (17).

  In the invention according to claim 5, the air conditioning unit (1) is provided between the case body (12) and the case upper lid (13) as an elastic seal member (23) for sealing the air conditioning case (7). And an elastic seal member (23) that is compressed when the case upper lid (13) is closed, and the compression reaction force (R1) of the filter member (8) when the case upper lid (13) is closed. ) Is smaller than the compression reaction force (R2) of the elastic seal member (23). As a result, the filter member (8) can be fixed by the case upper lid (13) with almost no influence on the sealing performance of the elastic seal member (23).

  In addition, the code | symbol in the bracket | parenthesis of each said means is an example which shows a corresponding relationship with the specific means as described in the Example mentioned later.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  In this specification, a cooling unit mounted on a roof such as a large bus will be described as an embodiment of an air conditioning unit according to the present invention. FIG. 1 shows a state in which a cooling unit 3 composed of a cooling unit 1 and a condensing unit 2 according to an embodiment of the present invention is mounted on the roof of a bus 4. In the condensing unit 2, in order to exchange heat with the outside air, a condenser, a condenser cooling fan, etc. (not shown) as a heat exchanger on the high temperature side are accommodated. In order to exchange heat with room air, there are an evaporator as a low-temperature side heat exchanger, a blower fan, and a filter member for outside air that removes dust contained in the introduced outside air (none of which are shown). Contained. A refrigerant compressor 5 is disposed at the rear of the bus vehicle, and a cooler duct 6 for supplying the air cooled by the cooling unit 1 to the upper part of each seat is disposed on the ceiling in the vehicle interior.

  2 is a perspective view showing the appearance of the cooling unit 1 as a single unit, FIG. 3 is a sectional view taken along line AA in FIG. 2, and a side sectional view schematically showing the inside, and FIG. It is a perspective view which shows the state opened. The cooling unit 1 accommodates a filter member 8 for outside air, an inside / outside air switching door 9, an evaporator 10, and a blower fan 11 from one end on the left side in FIG. In this embodiment, two filter members 8 and six blower fans 11 are arranged.

  The air-conditioning case 7 is formed in a substantially rectangular shape when viewed from above, and includes a case body 12 and a case upper lid 13 made of synthetic resin. The case upper lid 13 has the rectangular shape. It is fixed to the case body 12 via a hinge (not shown) so as to rotate around an upper lid rotation axis P1 provided along one long side. The case body 12 has an outside air introduction port 14 at the end of the other long side of the rectangle, an inside air introduction port 15 on the upstream side of the evaporator 10 at the substantially central portion, and a lower side of the blower fan 11. A cold air outlet 16 is provided.

  When the blower fan 11 is operated, the inside air, that is, the air in the passenger compartment of the bus, is sucked from the inside air inlet 15 of the air conditioning case 7 and cooled through the finned pipe of the evaporator 10. Sent through the cabin. When the inside / outside air switching door 9 is in the position shown in FIG. 3, outside air is sucked from the outside air inlet 14 of the air conditioning case 7, passes through the filter member 8, passes through the switching unit opening 20 b, and the evaporator 10 together with the inside air. Pass through. The inside / outside air switching door 9 can be rotated around its rotation axis P2, and the switching portion opening 20b can be closed or the inside air introduction port 15 can be closed.

  Next, the filter member 8 and its fixing structure will be described. In the present embodiment, two filter members 8 formed in a relatively long and narrow rectangular shape are used, and they are arranged along the other side end portion of the air conditioning case 7 opposite to the upper lid rotation axis P1. It is arranged slightly above the introduction port 14 and tilted by rotating about 30 degrees counterclockwise from the horizontal when viewed in FIG. The filter member 8 has a thickness of 10 to 20 mm in this embodiment, and is made of an elastic material capable of elastic compression of about 50% or more of the thickness.

  The case main body 12 is provided with two filter placement plates 17 for placing the filter member 8 thereon. Each filter mounting plate 17 is formed in a frame shape as shown in FIG. 5 which is a single perspective view of the filter mounting plate 17, and has two rectangular mounting plate ventilation holes 17a on the mounting surface on which the filter member 8 is mounted. is doing. The filter mounting plate 17 has mounting ears 17b and fixing holes 17c at both ends thereof, and the mounting plate fixing to be described later by the ears 17b so that the filter mounting surface is inclined about 30 degrees from the horizontal. It is fixed to the member 18.

  In addition, the filter mounting plate 17 rises substantially perpendicularly from the mounting surface in order to position the filter member 8 and touches both end surfaces on the short side of the filter member 8 and one end surface on the lower side of the long side. The positioning portion 17d is integrally formed. Further, the positioning portion 17d on the end surface on the short side of the filter member 8 is connected to the ear portion 17b. Thus, the filter member 8 is arranged at a predetermined position when it is placed on the filter placement plate 17.

  As shown in FIG. 4, the case main body 12 is provided with three mounting plate fixing members 18, and the mounting plate fixing member 18 supports the filter mounting plate 17. A supporting surface portion 18 a is provided, and one end and the other end below the fixing member 18 are respectively coupled to the case body 12. The mounting plate support surface portion 18a of the mounting plate fixing member 18 is provided with a screw hole 18b for fixing the upper lid in addition to the screw hole 18c for fixing the filter mounting plate 17 described above.

  As shown in FIGS. 3 and 4, the case upper lid 13 is formed of a cover member 19 that forms an outer shape and an inner duct member 20. As shown in FIG. 3, the duct member 20 has a wide U-shape, as shown in FIG. 3, and the upper end of the U-shape is joined to the inner surface of the cover member 19 by, for example, ultrasonic welding. It is integrated with the cover member 19.

  A rectangular duct member ventilation hole 20a through which air from the filter member 8 passes is formed at the bottom of the U-shaped left side of the U-shape of the duct member 20 in opposition to the filter mounting plate ventilation hole 17a. The ventilation hole 20 a is formed smaller than the outer shape of the filter member 8. When the case upper lid 13 is closed, the duct member 20 has a peripheral portion that surrounds the duct member ventilation hole 20a as a filter pressing portion that presses the entire peripheral edge portion of the filter member 8, and the entire peripheral edge portion of the filter member 8 is The filter member is formed so as to be compressed by about 40% of the thickness thereof.

  Further, a switching portion opening 20b is formed in the right side of the U-shape of the duct member 20, and as a result, between the duct member 20 and the cover member 19, the duct member ventilation hole 20a is switched to the switching portion opening 20b. A communicating space is formed.

  Three upper lid fixing screws 21 are provided on each of the three L-shaped upper lid fixing members 22 on the outer side of the left side portion of the U-shape of the duct member 20, and the upper lid fixing member 22. Is fixed to the duct member 20. The case upper lid 13 is fixed to the case main body 12 by screwing the upper lid fixing screw 21 into the screw hole 18b for fixing the upper lid provided in the mounting plate fixing member 18 described above. Further, a waterproof packing 23 formed of an elastic member is provided at a joint portion between the cover member 19 and the case body 12 when the case upper lid 13 is closed, and rainwater or the like enters the air conditioning case 7. Is to prevent.

  Since the filter member 8 positioned and mounted on the filter mounting plate 17 is configured as described above, when the case upper cover 13 is closed and the case main body 12 is screwed by the upper cover fixing screw 21, the duct member The entire periphery of the filter member 8 is sandwiched and fixed by the peripheral portion of the member ventilation hole 20a, that is, the filter pressing portion, and the filter mounting plate 17 on the case body side. Further, when the case upper lid 13 is opened by loosening the fixing screw 21 of the case upper lid 13, the fixing of the filter member 8 is released and the filter member 8 can be taken out from the filter mounting plate 17.

  By the way, when the case upper lid 13 is closed, not only the compression reaction force R1 of the filter member 8 but also the compression reaction force R2 of the waterproof packing 23 acts on the case upper lid side and the case body side, but it is necessary to close the case upper lid 13. The compression reaction force R1 is at least smaller than R2 so that the force does not increase remarkably or the entire case lid is deformed by the compression reaction force R1 of the filter member 8 and does not adversely affect the sealing performance of the waterproof packing 23. It is preferable that For this reason, in the present embodiment, the hardness, deformation amount, and contact of the waterproof packing 23 and the filter member 8 so that the compression reaction force R1 of the filter member 8 is ½ or less of the compression reaction force R2 of the waterproof packing 23. Area etc. are set.

  In the above-described embodiment, the filter member 8 is disposed at the end of the case body 12 on the side far from the upper lid rotation axis P1 of the case upper lid 13. However, like the cooling portion of the modified example shown in FIG. In addition, the upper lid rotation axis P <b> 1 may be brought close to the filter member 8. When the upper lid rotation shaft P1 is brought close to the filter member 8, the repulsive force generation position of the filter member 8 approaches the upper lid rotation shaft P1, and thus when the case upper lid 13 is closed by applying a force to the distal end side of the case upper lid 13. The force applied to the case upper lid 13 is reduced as compared with the case of the above-described embodiment.

  The above-described embodiment has been applied to the case where the present invention is applied to the cooling unit 1 used for a bus or the like. However, the present invention is not limited to the cooling unit 1 such as a bus, and the upper lid that can be opened and closed. It is applicable to an air conditioning unit having an air conditioning case having a filter member and a filter member disposed thereon.

It is a perspective view which shows the air conditioning unit containing the cooling unit by the 1st Example of this invention, and the bus | bath which mounts it. It is a perspective view which shows the external appearance of the cooling unit of a 1st Example. It is AA sectional drawing of FIG. 2, Comprising: It is side sectional drawing of a cooling unit. It is a perspective view which shows the state which opened the case upper cover of the cooling unit of FIG. It is a perspective view of a filter mounting plate. It is a perspective view of the state which opened the case upper cover of the cooling unit of the example of a change.

Explanation of symbols

7 Air Conditioning Case 8 Filter Member 10 Cooling Heat Exchanger 11 Blower Fan 12 Case Main Body 13 Case Top Cover 14 Outside Air Inlet 17 Filter Placement Plate 20 Duct Member

Claims (5)

An air conditioning case (7);
A cooling heat exchanger (10) disposed in the air conditioning case (7) for cooling air;
A filter member (8) for capturing dust contained in outside air introduced into the air conditioning case (7), and an air conditioning unit (1) comprising:
The air conditioning case (7) includes a case main body (12) and a case upper lid (13) pivotally attached to the case main body (12) so as to be opened and closed.
The case body (12) has a filter placement portion (17) for placing the filter member (8),
The case upper lid (13) has a filter pressing part,
The filter member (8) is sandwiched and fixed between the filter pressing portion and the filter placement portion (17) when the case upper lid (13) is closed. 1).   The air conditioning unit (1) according to claim 1, characterized in that the filter member (8) is made of an elastic material that is elastically deformable at least in the thickness direction.   The air conditioning unit (1) according to claim 1 or 2, wherein the filter pressing portion of the case upper cover (13) is formed so as to press the entire peripheral edge portion of the filter member (8). 1).   The said filter mounting part (17) is provided with the filter positioning means (17d) which arrange | positions the said filter member (8) in a predetermined position, The Claim 1 characterized by the above-mentioned. The air conditioning unit (1) described. When the elastic sealing member (23) for sealing the air conditioning case (7) is provided between the case main body (12) and the case upper lid (13), and the case upper lid (13) is closed. The air conditioning unit (1) according to any one of claims 1 to 4, further comprising an elastic seal member (23) compressed into
An air conditioning unit characterized in that the compression reaction force (R1) of the filter member (8) when the case upper lid (13) is closed is smaller than the compression reaction force (R2) of the elastic seal member (23). (1).

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