EA004728B1 - Pentapost air handling unit casing - Google Patents

Abstract

1. Pentapost type air handling unit casing comprising panels arranged side by side and perpendicularly, and side profiles embodied between the perpendicular panels and middle profiles embodied between side by side panels characterized in that said side profiles (2) comprises at least two joined preferably diagonal partitions having a predetermined height and width and said middle profiles (3) having the same thickness with the side panels are provided with steps on two opposite directions around circumference of the said middle profiles (3). 2. Pentapost type air handling unit casing according to claim 1, characterized in that said steps of middle profile (3) comprise lengthwise steps on which panels are fastened are formed on the exterior side of the middle profile (3) and widthwise steps providing side profile (2) connection are formed on interior middle profile side. 3. Pentapost type air handling unit casing according to claim 1, characterized in that said two partitions of the side profiles (2) are preferably embodied diagonally with respect to each other. 4. Pentapost type air handling unit casing according to claim 1, characterized in that at the corners of the said casing, corner pieces (4) are located for connecting said side profiles (2). 5. Pentapost type air handling unit casing according to claim 4, characterized in that said corner pieces (4) have preferably three legs for housing associated side profile therein. 6. Pentapost type air handling unit casing according to claim 1, characterized in that self-drilling screws (9) are embodied for providing connection between the side profiles (2) to panels, and middle profiles (3) to panels. 7. Pentapost type air handling unit casing according to claim 1 and 6, characterized in that said self-drilling screws (9) are located inside plastic bushings (10) having a cylindrical embodiment and providing connection between the panels and side, middle profiles. 8. Pentapost type air handling unit casing according to claim 7, characterized in that said bushing (10) is furnished with two elastic nails (11) movable in the direction of the bushing radius. 9. Pentapost type air handling unit casing according to claim 7, characterized in that top surface of the bushing (10) appearing on exterior panel surface is covered by a lid (21) for protecting screw from corrosion. 10. Pentapost type air handling unit casing according to claim 1, characterized in that said side profile (2) is preferably a steel strip while the middle profile is preferably two steel skins, an insulation material therebetween or steel strip having bottom and top lids. 11. Pentapost type air handling unit casing according to claim 1, characterized in that said middle profile (3) is a steel strip and provided with lower and upper lids. 12. Pentapost type air handling unit casing according to claims 1 and 11, characterized in that said side profiles (2) are sewn or preferably welded from lengthwise edges to each other. 13. Pentapost type air handling unit casing according to claim 1, characterized in that rubber gaskets (19) having two different lips thereof for increasing air leakage resistance in case of positive and negative pressure difference between the casing and surrounding are located between the panels and side (2), middle profiles (3).

Description

The invention relates to a housing installation for the preparation of air, containing various components to change the temperature of the air. In particular, the invention relates to connecting elements of body panels, the design of which provides for a seamless connection of end-to-end butt and right angle elements of body panels without the use of bolts and nuts, ease of assembly and maintenance of the body and reduction of heat exchange between the air inside and outside the air preparation unit.

Overview of known technical solutions

Installations for the preparation of air are widely used in air conditioning systems in residential and industrial premises and are used to change the thermal parameters of air and purify air from unwanted particles and odors. Inside the casing of an air preparation unit, various components are placed, for example coils for heating and cooling, filters, blowers, humidifiers, etc., designed to change the thermal parameters of the air and to ensure air circulation through the casing.

The housing of the air preparation unit is designed for the physical separation of the circulating inside the plant and the conditioned air from the outside air and, in addition, to protect the internal components.

Usually, the housings of air handling units can be divided into two groups, namely frameless and frame housings. In the case of a frameless casing of an installation for preparing air, the panels are connected directly to each other, and in the case of a frame casing, panels are fastened with a frame.

The main elements of the frame body installation for air preparation are the side profiles, middle profiles, corner parts, panels and doors. The frame is made of side profiles and corner parts. Side profiles are interconnected via corner pieces. The middle profiles and panels are attached to the side profiles and thereby create the lining of the installation. The connection of panels at right angles is performed with the help of side profiles, and the end-to-end panels are connected with the help of middle profiles.

The panels are made of two separate sheets of metal, between which is placed an insulating material. Since air preparation plants have different sizes depending on the required performance characteristics and conditioned air productivity, different numbers and combinations of standard panels are used to manufacture the hull of each specific size.

Doors provide access to the inside of the case for servicing and repairing components or for making changes or adjusting the system if necessary. The door is also made of two separate sheets of metal, which are called inner and outer skins, and a filler between them, which serves as insulation. The door on one side has hinges that attach it to the panels of the case, and door handles on the opposite side, designed to close the door.

The disadvantages inherent in the known structures of the above-described buildings of the installation for air preparation can be formulated as follows.

Usually, the side profiles are provided with edges to which the panels are attached. These edges reduce the useful installation height. In order to install any elements into the installation or to extract from it, their height is correspondingly limited, which, in turn, limits the surface area of the installation elements and, consequently, their performance.

If to get a longer installation, it is required to connect two units of the air preparation unit, then the edges of the profiles on the connecting parts of the blocks interfere with the air flow near the inner surface and dust and solid particles accumulate on it, which makes it difficult to wash and clean the internal components of the unit.

In addition, dust and particles accumulate inside the unit due to the difference in thickness of the middle profiles with panels, as well as due to the fact that the inner surface of the middle profiles is not smooth. The accumulation of dust and particles inside the installation adversely affects the hygienic characteristics of the installation.

The panels are attached to the profiles with bolts and nuts. The presence of nuts inside the installation makes it difficult to install elements of the air preparation unit, since they cannot be installed where the nuts are located, and they have to be moved to places where there are no nuts, which, as a result, leads to an increase in the size of the air preparation unit.

Another disadvantage of the known structures of the air handling unit is that attaching the panels to the side or middle profile with bolts and nuts makes it difficult to assemble the body, since two people are required to perform this assembly: one holds the nut from the inside and the other tightens the bolt from the outside.

Another problem that is often encountered, especially in regions with high relative humidity of air, is the condensation of moisture on the surfaces of the case.

Moisture condensation causes rust and corrosion of the skin. Insulation in air handling units reduces the heat transfer between the air inside and outside the installation, however, since the middle profiles are not filled with insulation, this is where moisture condensation usually occurs.

In recent years, developments have been made to eliminate these drawbacks; however, a non-welded block construction in which all the described drawbacks would be eliminated or their consequences reduced has not been proposed.

In the patent CB 2264165 described installation for the preparation of air, in which there are several intermediate frame elements, passing between the upper and lower frame elements. The body panels are installed between the intermediate frame elements, which have flanges protruding to the side of the frame elements.

Due to the fact that the side panels need to be fixed to the intermediate frame elements, various types of losses occur during assembly of such an installation for air preparation, including additional labor and material consumption, which, of course, affects the cost of production.

In addition, patent CB 2264165 describes a side profile with edges, i.e. with ledges. When using such a profile, the base panel and the edge of the side profile are at different heights. It is clear that because of this, the user is unlikely to want to clean the inner surfaces of the air preparation unit because it will be impossible to remove the wash water from the body due to the presence of profile edges, for example, if the user wants to remove water from one of the side panels.

In the patent EP 0933599 described side profile, consisting of two parts, and a rubber insert for the body of the installation for the preparation of air. A rubber insert with a bent edge is inserted between the metal elements of the structure, namely the side profiles consisting of two parts.

Since the side profile according to the description of the patent EP 933599 consists of two parts, it is clear that air leaks cannot be avoided simply due to the fact that this side profile is not a solid structure consisting of one element. In addition, in practice, an increase in the number of components that have to be assembled inevitably leads to an increase in labor costs.

Due to the presence of the edge in the form of a protruding part of the side profile in the design according to the patent CB 2264165 and here cleaning of the internal surfaces is impossible.

Description of the invention

The main elements of the proposed housing are the corner parts, side profiles, middle profiles, panels and doors, however, this invention eliminates some of the mentioned disadvantages and reduces the negative effects of others.

The task of the invention is to eliminate the edges of the side profiles and the creation of installations for the preparation of air, in which the internal height is equal to the served height. This eliminates the need to reduce the height of the elements of the installation.

In addition, the objective of this invention is to create a housing with smooth and even surfaces, on which there will be no edges of profiles, nuts, protrusions and channels in the case of connecting two block sections.

Another objective of this invention is to reduce the likelihood of condensation of moisture on an average profile.

The air handling unit casing, described below, consists mainly of side profiles, middle profiles, corner parts and doors.

The design of the panels consists of inner lining, outer lining and insulating material between them. The panels can be fastened to each other end-to-end or at right angles, using the middle or side profiles respectively. Along the perimeter of the panels there is a sufficient number of plastic bushings for screws.

Side profiles are designed to connect two panels at right angles. The edges are missing. For fastening the panels and side profiles to each other instead of bolts and nuts use self-tapping screws. The screws are inserted into the plastic sleeves and screw the panels to the side or middle profiles. Nuts are not required, as the screw itself provides a secure fit.

The middle profile is designed to connect panels at an angle of 180 °. It can be made by molding a suitable strip of sheet metal or from two casing, like panel. The middle profile and the panels are attached to each other in the same way as described for connecting the side profiles and panels. The middle profile and panels have the same thickness, while the middle profile has a flat and smooth inner surface. The middle profile is filled with insulating material, which increases the thermal resistance of the profile and reduces the likelihood of moisture condensation on its surfaces.

In both cases - when joining butt-end and at right angles - a special rubber gasket is used to reduce air leaks due to the difference in air pressure inside and outside the case. Two cuffs from different sides of the gasket increase the resistance to air leakage at both positive and negative pressure differences in the installation and the environment.

Corner details are used to connect the side profiles in the corners of the box. They have three legs and an outer profile, the dimensions of which are designed so that they can be inserted into the side profiles.

The door has the same construction with the panels, with the only difference that the door is mounted on the middle or side profile with hinges and fixed with door handles. On the one hand the door has hinges that hang it on the middle or side profile. The door handle and door lock on the opposite side of the door are designed to open or close the door. To ensure tightness with the door closed on the middle or side profile is placed the same rubber gasket.

Description of the drawings

The advantage of the proposed device and its auxiliary elements will become clearer from the attached detailed drawings.

FIG. 1 shows a general view of the housing of an installation for air preparation.

FIG. 2 shows the detailed design of the proposed panel.

FIG. 3 shows the proposed side profile.

FIG. 4 shows an example of another embodiment of the side profile.

FIG. 5 shows the proposed average profile.

FIG. 6 shows an example of another embodiment of an average profile.

FIG. 7 shows the proposed corner detail.

FIG. 8 shows the connection of the side profile, middle profile, panel and door.

FIG. 9 shows the proposed gasket.

FIG. 10 shows the proposed plastic sleeve.

Item Positions in Drawings

Panel

Side profile

Average profile

Corner piece

Door

Internal panel trim

Panel trim

Insulation material

Self tapping screw

Plastic sleeve

Medium profile inner trim

Medium profile outer trim

Extruded Medium Profile

Extruded Medium Profile Covers

Internal door trim

Door trim panel

Door handle

Door hinges

Gasket

Plastic sleeve lug

Plastic sleeve cover

Detailed Description of the Invention

The main elements of the housing of an air preparation unit are shown in FIG. 1. These elements are panels (1), which can be joined end-to-end or at right angles, side profile (2) for connecting panels at right angles, middle profile (3) for connecting end-to-end panels, corner parts (4) for connection of side profiles on the corners of the installation and the door (5), which provides access to the elements of the installation for air preparation, for example, for their repair.

FIG. 2 shows the detailed design of the proposed panel (1). The panel (1) consists of the inner lining (6), the outer lining (7) and the insulating material (8) between the panel skins. Along the perimeter of the inner side of the panel (1) a step is made by reducing the thickness of the panel. In the thin part around the perimeter of the panel (1) the specified number of plastic bushings (10) is installed into which the screws are inserted.

Side profiles (2) are designed to connect panels (1) at right angles. The edges are missing. They can be made by molding from a strip of sheet metal. The edges of the strip can be stapled or welded, as shown in FIG. 3 and 4 respectively. The junction of the edges of the sheet metal strip is determined by the manufacturer. The side profile is made in the form of two parts, located diagonally relative to each other, providing height and width in accordance with its cross section. The thickness and length of the side profile (2) are the same as that of the panel (1) and the middle profile (3); however, on both sides of this profile there are steps for mounting the panel (1) or middle profile (3).

FIG. 5 shows the construction of the middle profile (3). It consists of inner lining (11), outer lining (12) and insulating material (8) between them, similar to the panel structure (1), although other embodiments are possible. For example, it can be made by molding from a strip of sheet metal. The upper and lower ends of the profile can be closed with covers, as shown in FIG. 6. The thickness of the middle profile (3) is the same as that of the panels (1). On every two opposite sides, steps are made around the perimeter of the panel. Steps running along the length on which the panels are fastened are made on the outside of the middle profile (3), and steps going across the width that are used to attach the side profile are made on the inside of the middle profile. Steps are obtained by reducing the thickness of the profile. Average pro

Ί fil (3) is filled with insulating material (8). Plastic sleeves (10) are installed in the upper and lower parts of the profile (3) for fastening the middle profiles (3) to the side profiles (2).

FIG. 7 shows a detail of the corner part (4). It has three legs, which outside have the same shape as the shape of the inner surface of the side profile (2). The legs are inserted into the side profiles (2), and three side profiles (2) are fixed at the installation angle. This part can be made of plastic or other suitable material.

A detailed view of the casing door of the air handling unit is shown in FIG. 8. The design of the door (5) is similar to the design of the panel (1). Like the panel, the door (5) consists of the inner lining (15), the outer lining (16) and the insulating material (8) between them, however, it does not have plastic sleeves. To connect the door (5) with the middle profile (3), there are hinges (18). To open or close the door, a handle (17) is installed on it.

FIG. 9 shows the proposed gasket designed to prevent air exchange between the internal volume of the installation and the environment. Along the edges, it has two cuffs, which provide an effective seal for both positive and negative pressures in the installation. The cuff is placed between the side and middle profiles and panels.

The plastic sleeve of the present invention is shown in FIG. 10. It has two plastic protrusions (20), the height of which in the radial direction of the sleeve may vary. The plastic sleeve is inserted into the sleeve hole previously made in the panels. When the sleeve is inserted, its protrusions (20) are first sunk, and then, when the sleeve is in the set position, are straightened and the sleeve is fixed in the panel (1). The plastic sleeve (10) fixes the inner and outer skin of the panel and allows a reduction in the length of the screw, since the screw head is sunk into the end of the sleeve (10). To protect the screw from corrosion, the upper end of the sleeve (10), visible on the outer surface of the panel, is closed with a cover (21).

A detailed view of the casing door of the air handling unit is shown in FIG. 8. The design of the door (5) is similar to the design of the panel (1). Like the panel, the door (5) consists of inner lining (15), outer lining (16) and insulating material (8) between them, however, there are no plastic bushings (10) in the door (10).

To open or close the door, a handle (17) is installed on it. For hanging the door (5) on its frame are hinges (18).

The installation can be easily made from the described structural elements. First, the installation frame is made of side profiles (2) and corner parts (4). To do this, each leg of the corner part (4) is inserted into the side profiles (2). In this way, the connection of three side profiles (2) at the corners of the installation is provided. The frame requires eight corner pieces (4) and twelve side profiles (2).

A casing is attached to the finished frame - panels (1) and middle profiles (3) are attached to side profiles (2). The connection of the side profile (2) with the panel (1) and the middle profiles (3) is shown in FIG. 8. As can be seen in this drawing, the connection of the panels (1) at a right angle is made using the side panels (2). Step panel (1) put on the side profile (2). A self-tapping screw (9) is inserted through the plastic sleeve of the panel (1). It is screwed into the side profile until the screw head touches the end of the plastic sleeve and ensures a secure fit. When drilling, the screw itself cuts a thread in the profile (2). Its tip remains inside the profile (2). When using such a screw does not require the use of nuts on the back side.

The connection of the panels (1) against the butt is performed using the middle profile (3). This connection is also shown in FIG. 8. The panel step (1) is placed on the step of the middle profile (3). The method described for connecting the side profile (2) and the panel (1) is also used for fastening the panel (1) to the middle profile (3). A screw (9) is inserted into the panel (1) through the plastic sleeve (10) and screwed into the middle profile (3) to fasten the panel (1) to it.

The gasket (9) of the present invention is inserted between the panels (1), the middle profile (3) and the side profiles (2) to prevent air exchange between the internal volume of the installation and the surrounding space. The installation location of the gasket (19) is shown in FIG. 8. The flat surface of the gasket (19) is adjacent to the steps of the middle (3) and side (2) profiles, and the gasket cuffs (19) are compressed panels.

Claims (13)

CLAIM 1. Frame frame installation for the preparation of air, which is installed butt-mounted and at right-angle panels, side profiles between panels installed at right angles, and middle profiles between panels installed end-to-end, characterized in that the said side profiles (2) have at least two parts, preferably diagonally joined, with predetermined height and width of the section, and the fact that said middle profiles (3) have an outer skin, an inner skin and insulating material between them and the same The thickness of the aneli, with the indicated middle profiles having steps on opposite sides of the perimeter. 2. Frame housing installation for air preparation according to claim 1, characterized in that the said steps of the middle profile (3) contain longitudinal steps on the outer side of the middle profile (3) for fastening the panels and transverse steps for connecting the side profile (2) with the inner side of the middle profile. 3. Frame housing installation for the preparation of air under item 1, characterized in that the two parts of the side profiles (2) are preferably located diagonally relative to each other. 4. Frame housing installation for air preparation according to claim 1, characterized in that the side profiles (2) are fitted and connected to each other at each corner of the housing by means of corner parts (4). 5. Frame housing installation for the preparation of air according to claim 4, characterized in that the specified corner parts (4) preferably have three legs for putting on them associated with the corner part of the side profiles. 6. Frame housing installation for air preparation according to claim 1, characterized in that the panels are attached to the side profiles (2) and to the middle profiles (3) by means of self-tapping screws (9). 7. Frame housing installation for air preparation according to claims 1 and 6, characterized in that the self-tapping screws (9) are inserted into the plastic sleeve (10) of cylindrical shape, designed to connect panels with side profiles (2) and middle profiles ( 3). 8. Frame housing installation for air preparation according to claim 7, characterized in that the specified sleeve (10) has two plastic protrusion (20), the height of which in the radial direction of the sleeve may vary. 9. Frame housing installation for air preparation according to claim 7, characterized in that to protect the screw from corrosion, the upper end of the sleeve (10), visible on the outer surface of the panel, is closed by a cover (21). 10. Frame housing installation for air preparation according to claim 1, characterized in that said side profile (2) is preferably made of flat steel, and the middle profile (3) preferably consists of two steel skins and an insulating material between them. 11. Frame housing installation for air preparation according to claim 1, characterized in that the middle profile (3) is made of strip steel and provided with a lower and upper covers. 12. Frame casing installation for air preparation according to claims 1 and 11, characterized in that the said side profiles (2) are stitched along the length or preferably welded. 13. Frame housing installation for air preparation according to claim 1, characterized in that between the panels and side profiles (2) and middle profiles (3) rubber gaskets (19) with two cuffs are installed to increase the resistance to air leakage in the case of positive and negative pressure differences inside and outside the installation.