JPS6219877Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the casing of an air conditioner, particularly to the structure of its frame.

Fig. 1 shows an example of a general air conditioner, in which a rectangular parallelepiped casing 1 is equipped with a blower 2, a motor 3, a heat exchanger 4, a filter 5, and a humidifier etc. as appropriate. The structure is such that the temperature and humidity of the inhaled air are balanced and the air is sent out from the blow-off duct 7.The casing 1 is generally made of commercially available steel structural materials such as angle materials, channel materials, or square pipe materials joined by welding. The frame 10 is shaped like a rectangular parallelepiped, and outer plates 11 are attached to each outer surface of the frame 10 by screws.

At the corner part of the frame 10, as shown in FIG. 2, three structural members, for example, angle members 12, are further welded using one to three reinforcing members 13 as necessary. Also, the outer panel 11
For this purpose, a flat steel plate is used and riveted to the frame 10, or a steel plate reinforced by forming inwardly bent pieces 14 on the periphery of the steel plate as shown in FIG. I'm trying to stop it. Usually, a heat insulating material 16 such as glass wool is pasted on the inside of the outer panel 11, and a packing 17 with a rectangular cross section is pasted around the entire circumference to prevent air leakage. A drain pan 18 is provided at the bottom of the casing 1, and its peripheral edge 18a extends slightly outward from the lower edge of the outer panel 11 to collect water droplets due to condensation formed on the exposed portion of the angle member 12. 19 is a reinforcing material for the outer panel 11.

By the way, for the frame 10 using commercially available structural materials as described above, the materials are easy to obtain, and processing such as cutting, welding, and drilling is also easy, and casings of various sizes can be manufactured by hand in a one-piece production manner. Although it is convenient when doing so, it has the following problems.

(b) Temporary assembly when welding angle materials is complicated, and after welding, post-processing such as sanding and correction of distortion due to thermal stress is required, which is time-consuming, and the welding work is difficult. There are many disadvantages associated with welding, such as the need for skill and the tendency for quality to vary depending on the quality of the welding technique.

(b) Due to the occurrence of distortion, it is not possible to machine reinforcement and mounting holes for the outer panel into the angle material in advance, and the work is complicated and inefficient because the holes are machined on-site after straightening. It is.

(c) Unlike general building structures, the casing of an air conditioner requires a high degree of airtightness, so the outside of the frame must be flat so that the outer panel will fit tightly. For this reason, it is necessary to cut out the end faces of the butt parts of the angle materials to prevent the difference in level from occurring, and these end face treatments are also important when adding various reinforcing materials, etc., and the machining is complicated and requires considerable effort. It takes.

The present invention focuses on these problems, and aims to provide a casing that can be pre-processed in a well-equipped factory, facilitates assembly work in the workshop, and also provides good airtightness. This was made for the purpose of creating a triangular pyramid-shaped corner in which three flat frame joining pieces are combined orthogonally to each other in a triangular pyramid shape, and the outside of the apex has the same thickness as the angle material for the frame. A three-pronged orthogonal frame joint piece with a corner piece in which the pieces are stacked and covered is provided, and the end face of an angle material for the frame is brought into close contact with the corner piece of the frame joint piece,
In addition, by arranging the corner pieces and the angle members so that there is no step difference and tightening bolts, the orthogonal angle members are connected to each other via the frame joint pieces to form a frame.

In other words, according to the present invention, since the assembly is performed using a drain contact using screw tightening, (a) the assembly work is easy and does not require the same level of skill as welding, and there is no distortion and rework is not required. There's no need.

(b) Since no distortion occurs, it can be processed in advance, and once the external dimensions are determined, cutting, perforation, bending, etc. can be performed using an automatic NC machine using a rolled steel plate with excellent thickness accuracy. This can be done at the factory to improve manufacturing accuracy and processing efficiency.

(c) Precise machining can be performed in advance, so there is no need for on-site machining at all, and since frame joint pieces are used, the end faces of the angle pieces can be simply cut, making it easier to assemble the frame, attach outer panels, etc. Work efficiency improves.

(d) It becomes easier to improve the precision of the framework and eliminate irregularities on the outer surface, and the airtightness of the casing can be improved accordingly.

(e) By using corner pieces, it is easy to add bracing to the frame to increase its strength, and this bracing can easily stop the deformation and vibration of the skin, so In addition, there is no need to attach reinforcing angle materials to the back of the outer panel.

(f) Since it can be knocked down on-site, it is easier to transport and handle large items that are difficult to transport into buildings compared to transporting welded fixed casings in sections. is also advantageous.

Effects such as this also occur.

In general, air conditioner casings are often assembled in places with relatively poor footing, and they contain high-speed rotating bodies, which creates a difference between the internal pressure and atmospheric pressure, so the strength and Airtightness, precision, etc. are required, and according to the present invention, a casing that satisfies these requirements can be obtained at low cost due to the various features described above.

Next, an embodiment of the present invention will be described with reference to the drawings from FIG. 4 onwards.

Figure 4 shows a three-pronged orthogonal frame joint piece, where 21 is a frame joint piece, 22 is a frame joint piece, and 23 is a corner piece. They are combined into a triangular pyramid shape, and a corner piece 23 is covered on the outside of an apex 24 made up of three joined pieces 22. The width of each piece 25 constituting the corner piece 23 is equal to the width of the angle material used, and the thickness is also the same size as the angle material, and a joining hole 26 of the angle material is provided in the joining piece 22, A mounting hole 27 in the outer plate is provided in a portion where the joining piece 22 and the corner piece 23 overlap.

The frame joint piece 21 is manufactured by press forming or by bending and welding.
For example, a developed shape as shown in FIG. It may be manufactured by a method such as bonding. In addition, corner piece 23
can also be made from the developed shape shown in Figure 4c,
Since it is smaller than the main body, it can be easily manufactured by press molding.

Figure 5 shows the frame joint piece 21 and the angle material 30.
This shows the joint state of each angle material 30
The end face 31 of the corner piece 23 is brought into close contact with the side edge 32 of the corner piece 23 and abuts on the outside of the frame joint piece 21, and the two are connected by a bolt 33 and a nut 34. A mounting hole 35 is provided in the angle member 30 at a position that corresponds to the joining hole 26. In addition, reinforcement brace 3
6 is required, they can be connected using the joint holes 26a, and the braces 36 can be easily attached.

FIG. 6 shows a frame 10 assembled into a rectangular parallelepiped shape using such frame joint pieces 21 at each corner.
This is a partial example. Further, FIG. 7 shows an example of how the outer panel 11 is attached, where 41 is an airtight gasket with a U-shaped cross section attached to the entire edge of the bent piece 14 of the outer panel 11, and 15a is an airtight gasket attached to the entire edge of the bent piece 14 of the outer panel 11 This is a large diameter portion formed under the neck of the screw 15, and the packing 41 has a packing side piece 41a protruding from the packing 41 to cover the edge portion of the angle member 30 or the corner piece 23.

Here, it is possible to use rolled steel plates with excellent plate thickness accuracy for each member of the frame joint piece 21 and the angle material 30, and they can be cut, punched, and bent by, for example, an NC automatic machine tool in a well-equipped factory. etc. have been processed. Therefore, each part is processed and produced with high precision and efficiency. In addition, not only the material of the frame 10 but also the outer plate 11 are processed in the factory, so there is no need to perform on-site processing of mounting holes in the workshop, making the assembly work easy and requiring no heat training like welding. Therefore, no distortion occurs.

In addition, the outer surface of the corner piece 23 and the angle material 3
It is flush with the outer surface of the angle member 30 and the corner piece 23 with no step difference.
The side edges 32 of the casing 1 are butted with high precision so as to have no gaps, and when the outer plate 11 is attached as shown in FIG. 7, a casing 1 with good airtightness and no leakage can be obtained.

As is clear from the description of the above embodiments, in the present invention, three frame joining pieces are assembled in a triangular pyramid shape orthogonal to each other, and the outside of the apex has the same thickness as the angle material for the frame. Using a three-pronged orthogonal frame joint piece with a corner piece that covers a corner piece having a By joining the angle materials and the frame joint pieces, the angles that are orthogonal to each other are joined to form the frame, making it easy to assemble and providing the necessary strength, airtightness, and precision. The casing for the air conditioner can be obtained at low cost.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of an example of a general air conditioner, Fig. 2 is a perspective view of the main parts of the framework in a conventional casing, Fig. 3 is a sectional view of the main parts of a conventional casing, and Fig. 4 a is a perspective view of a frame joint piece in a casing according to an embodiment of the present invention; FIG. 4 b
is a perspective view of the same frame joint piece seen from another direction,
Figure 4c is a developed view of the same frame joint piece, Figure 5a
5B is a perspective view of the same, FIG. 6 is a schematic perspective view of a main part showing an example of the frame of the embodiment, and FIG. FIG. 3 is a cross-sectional view of the main parts of the casing of the example. 1... Casing, 10... Frame, 11... Outer plate,
21...Frame joining piece, 22...Frame joining piece, 23...Corner piece, 26...Joining hole, 30...
Angle material, 31... end face, 32... side edge, 33... bolt, 34... nut.

Claims (1)

[Scope of utility model registration request] In an air conditioner casing, a rectangular parallelepiped-shaped frame is constructed by combining angle members, and outer plates are attached to each outer surface of this frame.
A corner piece is provided in which two flat plate-shaped frame joining pieces are combined orthogonally to each other to form a triangular pyramid shape, and a triangular pyramid-shaped corner piece having the same thickness as the frame angle material is overlapped and covered on the outside of the apex. A three-pronged orthogonal frame joint piece is provided, and the end face of the frame angle member is brought into close contact with the corner piece of the frame joint piece, and the corner piece and the angle member are arranged and bolted so that there is no step difference. A casing for an air conditioner characterized in that a frame is constructed by connecting orthogonal angle members to each other via frame joint pieces.