CN117450658A

CN117450658A - Air treatment unit

Info

Publication number: CN117450658A
Application number: CN202210847654.2A
Authority: CN
Inventors: 林青辉; 邢志钢; 刘雨; 王星辰
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2024-01-26

Abstract

The invention discloses an air treatment unit, which relates to the technical field of air conditioning equipment and comprises a first box body and a second box body, wherein one end of the first box body is provided with a first mounting frame; one end of the second box body, which is assembled with the first box body, is provided with a second installation frame which is in alignment connection with the first installation frame; one of the first mounting frame and the second mounting frame is provided with a positioning protrusion, the other one is provided with a positioning groove matched with the positioning protrusion, and the matching surface of the positioning protrusion and the matching surface of the positioning groove are matched cambered surfaces. The invention reduces the alignment difficulty of the first box body and the second box body, improves the assembly efficiency, and improves the sealing performance of the joint of the first box body and the second box body after assembly.

Description

Air treatment unit

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to an air treatment unit.

Background

The air handling unit is inconvenient to carry due to the fact that the overall weight is large, the installation space is narrow, and therefore a structure in which a plurality of module boxes are assembled is generally adopted. In the related art, the alignment difficulty is high when a plurality of module boxes are assembled, so that the assembly efficiency is low.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the air treatment unit, which reduces the alignment difficulty of a plurality of module boxes, improves the assembly efficiency and improves the sealing performance of the joints of the assembled box components.

According to an embodiment of the invention, a tank assembly includes: one end of the first box body is provided with a first mounting frame; the second box body is provided with a second installation frame which is in counterpoint connection with the first installation frame at one end assembled with the first box body; one of the first mounting frame and the second mounting frame is provided with a positioning protrusion, the other one of the first mounting frame and the second mounting frame is provided with a positioning groove matched with the positioning protrusion, and the matching surface of the positioning protrusion and the matching surface of the positioning groove are matched cambered surfaces.

The box body assembly provided by the embodiment of the invention has at least the following beneficial effects:

the first box body with the first installation frame and the second box body with the second installation frame are arranged, and the first installation frame and the second installation frame are in alignment connection through the matching of the positioning protrusions and the positioning grooves, so that the first box body and the second box body are convenient for an installer to operate and guide and center; the matching surfaces of the positioning protrusions and the positioning grooves are matched cambered surfaces, so that the guiding alignment of the positioning protrusions and the positioning grooves is smoother, the alignment difficulty of the first box body and the second box body is reduced, and the assembly efficiency and the accuracy of the air treatment unit are improved; the contact area of the first mounting frame and the second mounting frame is increased for the cambered surface by the matching surface, and the sealing performance of the joint of the first box body and the second box body after assembly is improved.

According to some embodiments of the invention, the first mounting frame is provided with the positioning projections, the positioning projections being arranged along a circumferential direction of the first mounting frame; the second mounting frame is provided with the positioning grooves, and the positioning grooves are arranged along the circumferential direction of the second mounting frame.

According to some embodiments of the present invention, an air flow channel penetrating in an up-down direction is provided in the first box, the first box includes a coaming and the first mounting frame, an opening communicating with the air flow channel is provided on a peripheral wall of the coaming, a first folded edge is formed at an end of the coaming, a first positioning groove is provided at an end of the first mounting frame facing the coaming, and the first folded edge is provided in the first positioning groove and is fixedly connected with the first mounting frame; the air treatment unit further comprises a box door, and the box door is arranged at the opening and connected with the first mounting frame.

According to some embodiments of the invention, the coaming is a sheet metal part and the first mounting frame is a plastic part.

According to some embodiments of the invention, the door comprises a door plate and a door frame, a second folded edge is formed at the end of the door plate, a second positioning groove is formed at one end of the door frame facing the door plate, and the second folded edge is arranged in the second positioning groove and fixedly connected with the door frame.

According to some embodiments of the invention, the door frame comprises a front baffle and a rear baffle which are arranged at intervals, the front baffle and the rear baffle respectively form side walls on two sides of the second positioning groove, the door plate is abutted with the front baffle, the second flange comprises a first sub-flange and a second sub-flange, two ends of the first sub-flange are respectively connected with the door plate and the second sub-flange, the first sub-flange is abutted with the bottom wall of the second positioning groove, and the second sub-flange is abutted with the rear baffle.

According to some embodiments of the invention, positioning blocks are respectively formed on two sides of the rear baffle, third folded edges are respectively arranged on two sides of the door plate, each third folded edge comprises a third sub-folded edge which is arranged at intervals with the door plate, and the third sub-folded edges are abutted with one end, away from the front baffle, of the positioning blocks.

According to some embodiments of the invention, the tailgate is provided with a notched groove, and at least part of the third sub-flap is disposed in the notched groove.

According to some embodiments of the invention, a first positioning portion is arranged at one end of the first mounting frame facing the opening, a second positioning portion matched with the first positioning portion is arranged on the door frame, and the door frame is fixedly connected with the first mounting frame.

According to some embodiments of the invention, the first positioning portion is provided with a first mounting hole, the second positioning portion is provided with a second mounting hole, and the first mounting hole and the second mounting hole are internally provided with fasteners in a penetrating manner.

According to some embodiments of the invention, the door panel comprises a first door body and a second door body which are arranged along the up-down direction, the door frame comprises a first door frame and a second door frame, the first door frame is connected with the upper end of the first door body, the second door frame is connected with the lower end of the second door body, the lower end of the first door frame is connected with a fixing frame, the lower end of the fixing frame is provided with a positioning rib, and the second door body is provided with a positioning hole matched with the positioning rib.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of an air handling unit according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the air treatment unit shown in FIG. 1;

fig. 3 is an enlarged view at G in fig. 2;

FIG. 4 is an assembled view of the first mounting frame of FIG. 1;

FIG. 5 is an assembled schematic view of the second mounting frame of FIG. 1;

FIG. 6 is an exploded view of the heat exchange box of FIG. 1;

FIG. 7 is an exploded view of the enclosure of FIG. 1;

FIG. 8 is a cross-sectional view of a tank assembly according to one embodiment of the present invention;

FIG. 9 is an enlarged view of FIG. 8 at A;

FIG. 10 is a schematic view showing the structure of a door of an air treatment unit according to an embodiment of the present invention;

FIG. 11 is a rear view of the door of FIG. 10;

FIG. 12 is an enlarged view at B in FIG. 11;

FIG. 13 is a cross-sectional view of section C-C of FIG. 10;

fig. 14 is an enlarged view of D in fig. 13;

FIG. 15 is a cross-sectional view of section E-E of FIG. 10;

fig. 16 is an enlarged view of F in fig. 15;

fig. 17 is a partial enlarged view of the mounting frame of fig. 7.

Reference numerals:

a fan case 1000; a first mounting frame 1100; positioning the protrusion 1200; a heat exchange tank 2000; a second mounting frame 2100; a positioning groove 2200; a filter box 3000;

a case 100; a shroud 110; a mounting frame 120; a first positioning groove 121; a mounting groove 122; a first mounting hole 123; a first fold 130;

a box door 200; a door panel 210; a first door body 211; a second door 212; a door frame 220; a second positioning groove 221; a front baffle 222; a tailgate 223; a positioning block 2231; notch 224; mounting ribs 225; a mounting post 226; a second mounting hole 2261; a first door frame 227; a second door frame 228; a second flange 230; a first sub-hem 231; a second sub-hem 232; a third fold 240; a connector flange 241; a third sub-hem 242; a fixing frame 250; the positioning rib 251.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, an air treatment unit according to an embodiment of the present invention includes a fan housing 1000, a heat exchange housing 2000, and a filter housing 3000. Because the overall height of air handling unit is high, and overall weight is big, in order to solve the difficult problem of transport, fan case 1000, heat exchange case 2000 and rose box 3000 can be constructed to three independent box subassemblies and can realize dismantling the connection, and fan case 1000, heat exchange case 2000 and rose box 3000 can dismantle the back and transport respectively, carries out fast assembly again during the installation to the installer of being convenient for installs in narrow installation space, has reduced the degree of difficulty of installation, has improved the efficiency of installation. In addition, when the air treatment unit needs to be maintained or cleaned, the disassembly is more convenient, and the maintenance convenience is improved.

Referring to fig. 1 and 2, it will be understood that a fan assembly (not shown), an electric control box (not shown), an electric heating assembly (not shown), and the like are provided in the fan box 1000; the heat exchange box 2000 is internally provided with a heat exchanger (not shown in the figure), a water receiving disc (not shown in the figure) and other components; filter box 3000 has a filter element (not shown), such as a high efficiency filter, disposed therein.

Referring to fig. 1 and 2, an air treatment unit according to an embodiment of the present invention employs three detachable tank assemblies, namely, a blower box 1000, a heat exchange box 2000, and a filter box 3000, respectively.

It will be appreciated that the air treatment unit of the embodiments of the present invention includes a first tank and a second tank. For convenience in describing the solution of the embodiment of the present invention, the first case is taken as the fan case 1000, and the second case is taken as the heat exchange case 2000 in the embodiment of the present invention, but not limited to the above embodiment, and as other embodiments, the first case and the second case may be correspondingly combined with any two of the fan case 1000, the heat exchange case 2000 and the filter case 3000.

Referring to fig. 1, 2 and 3, in the embodiment of the present invention, a first mounting frame 1100 is provided at an end of the fan case 1000 facing the heat exchange case 2000, a second mounting frame 2100 is provided at an end of the heat exchange case 2000 facing the fan case 1000, and the first mounting frame 1100 is disposed opposite to the second mounting frame 2100. The first and second mounting frames 1100 and 2100 may be made of plastic, so that the joint between the fan case 1000 and the heat exchange case 2000 may be formed to have a more uniform gap and better sealing.

It can be appreciated that, in order to improve the assembly efficiency and accuracy of the fan case 1000 and the heat exchange case 2000, the first mounting frame 1100 is provided with the positioning protrusion 1200, the second mounting frame 2100 is provided with the positioning groove 2200, the positioning protrusion 1200 corresponds to the positioning groove 2200 in the set position, and the positioning protrusion 1200 and the positioning groove 2200 cooperate to form an effective alignment, so that the first mounting frame 1100 and the second mounting frame 2100 can achieve a better alignment, thereby facilitating the installer to operate the fan case 1000 and the heat exchange case 2000 to guide and center. The cooperation of the positioning protrusion 1200 and the positioning groove 2200 can effectively prevent the air leakage from occurring in the gap between the fan case 1000 and the heat exchange case 2000, thereby enabling the use of sealing members such as sponge to be reduced.

It is understood that, as another embodiment, the first mounting frame 1100 is provided with the positioning groove 2200 and the second mounting frame 2100 is provided with the positioning protrusion 1200, which can also improve the assembly efficiency and accuracy of the fan case 1000 and the heat exchange case 2000.

Referring to fig. 4 and 5, it can be understood that the fan case 1000 and the heat exchange case 2000 according to the embodiment of the present invention are each square-shaped columns, and the corresponding first mounting frame 1100 and second mounting frame 2100 are each square-shaped. Accordingly, the positioning protrusion 1200 may be formed at two opposite frame bars of the first mounting frame 1100, or at all frame bars of the first mounting frame 1100. The positioning groove 2200 may be formed at two opposite frame bars of the second mounting frame 2100, or at all frame bars of the second mounting frame 2100. It is understood that the dimensions of the plurality of positioning protrusions 1200 arranged along the circumferential direction of the first mounting frame 1100 may be the same or different, and the dimensions of the plurality of positioning grooves 2200 arranged along the circumferential direction of the second mounting frame 2100 may be the same or different, as long as the plurality of positioning protrusions 1200 and the plurality of positioning grooves 2200 are matched in a one-to-one correspondence manner, the above embodiment may enable the first mounting frame 1100 and the second mounting frame 2100 to achieve better alignment, and further improve the tightness of the air handling unit.

Referring to fig. 3, it can be understood that the mating surface of the positioning protrusion 1200 is an arc surface, and the mating surface of the positioning groove 2200 is an arc surface matching the mating surface of the positioning protrusion 1200, so that the positioning protrusion 1200 can be advantageously introduced into the positioning groove 2200. The embodiment of the invention enables the guiding alignment of the positioning protrusion 1200 and the positioning groove 2200 to be smoother, reduces the alignment difficulty of the fan box 1000 and the heat exchange box 2000, and improves the assembly efficiency and the accuracy of the air handling unit. The mating surface of the positioning protrusion 1200 and the mating surface of the positioning groove 2200 are cambered surfaces, which increases the contact area of the first mounting frame 1100 and the second mounting frame 2100, and improves the sealing performance of the connection between the fan case 1000 and the heat exchange case 2000 after assembly.

Referring to fig. 6, which is an exploded view of the heat exchange box 2000, and referring to fig. 7, which is an exploded view of the fan box 1000, it will be appreciated that the air treatment unit according to the embodiment of the present invention includes box components such as the heat exchange box 2000 and the fan box 1000, where the box components include a box 100 and a box door 200, and the box 100 is penetrated in an up-down direction to form an air flow channel (not shown in the figure) for allowing air flow to pass through. To facilitate the installation of the components inside the housing assembly, the front side of the housing 100 is provided with an opening (not shown) that communicates with the airflow channel, and the components may be installed into the housing 100 through the opening, for example, by sliding connection, or snap-fit. Meanwhile, the door 200 is installed at the front side of the cabinet 100, thereby sealing the opening of the cabinet 100. It will be appreciated that the door 200 is generally designed as a readily removable component to facilitate after-market maintenance of the air handling unit.

Referring to fig. 7, 8 and 9, a case assembly according to an embodiment of the present invention, in which a case 100 includes a shroud 110 and a mounting frame 120. The upper end and the lower end of the coaming 110 are both provided with first folded edges 130, and the first folded edges 130 and the coaming 110 may be formed in an L shape, that is, the first folded edges 130 are formed by bending the end of the coaming 110 inwards by about 90 degrees, or may be formed in a U shape, that is, the first folded edges 130 are formed by bending the end of the coaming 110 inwards by about 90 degrees and then bending the end inwards again by about 90 degrees. The two mounting frames 120 are provided, and the two mounting frames 120 are respectively mounted at the upper end and the lower end of the coaming 110, so that the two ends of the upper end of the coaming 110 are wrapped, and the overall stability of the box body 100 is improved.

Referring to fig. 8 and 9, the mounting frame 120 mounted at the lower end of the shroud 110 is taken as an example, it is understood that one end of the mounting frame 120 facing the shroud 110 (i.e., the upper end of the mounting frame 120 shown in fig. 9) is provided with a first positioning groove 121, the first folded edge 130 is disposed in the first positioning groove 121, and the first folded edge 130 and the first positioning groove 121 form a matched limit, so that the first folded edge 130 and the first positioning groove 121 can realize a predetermined position, and the first folded edge 130 is fixedly connected with the mounting frame 120. For example, the first flange 130 may be connected to the mounting frame 120 by a fastener such as a screw, a rivet, or the like, and may be connected to the mounting frame 120 by a snap structure, which is not specifically limited herein. In addition, the mounting frame 120 is provided with the first positioning groove 121, so that the mounting frame 120 has better strength, and the structural strength of the box 100 is improved. In addition, the door 200 is fixedly connected with two mounting frames 120 respectively positioned at the upper and lower ends of the case 100, thereby achieving stable connection of the door 200 and the case 100.

According to the box assembly provided by the embodiment of the invention, the box 100 comprising the coaming 110 and the mounting frame 120 and the box door 200 arranged at the opening of the peripheral wall of the coaming 110 are arranged, the end part of the coaming 110 is provided with the first folded edge 130, the mounting frame 120 is provided with the first positioning groove 121, the first folded edge 130 is arranged in the first positioning groove 121 to realize positioning connection, the first folded edge 130 is fixedly connected with the mounting frame 120 so as to realize that the mounting frame 120 is stably connected with the end part of the coaming 110, and the box door 200 is connected with the mounting frame 120 so as to realize stable mounting of the box 100 and the box door 200, so that the overall structure of the box assembly is more stable. The box 100 is assembled through bounding wall 110 and installing frame 120, consequently bounding wall 110 and installing frame 120 can adopt metal and plastics to make respectively, are favorable to promoting the fire behavior of box subassembly, reduce manufacturing cost to can guarantee the leakproofness of the junction of a plurality of box subassemblies assembly back, box subassembly tip.

It should be understood that, as another embodiment, the first fold 130 may be formed only on the upper end of the shroud 110, so that the upper end of the shroud 110 is fixedly connected with the mounting frame 120 to form an upper structure of the case 100, and a lower structure of the case 100 may be formed by other structures. As another embodiment, the first fold 130 may be formed only at the lower end of the shroud 110, so that the lower end of the shroud 110 is fixedly connected with the mounting frame 120 to form a lower structure of the case 100, and an upper structure of the case 100 may be formed in other structures.

Referring to fig. 8 and 9, in the case 100 according to the embodiment of the present invention, the coaming 110 is a sheet metal member, so that the coaming 110 and the first folded edge 130 may be processed by processes such as stamping and bending; for the mode that whole box 100 adopted the panel beating to process to form, only processing bounding wall 110 can reduce the processing degree of difficulty, improves machining efficiency. The mounting frame 120 is a plastic part, so that the mounting frame 120 can be formed by injection molding, and compared with the whole box 100, the plastic processing mode is adopted, and only the mounting frame 120 can reduce the processing difficulty, improve the processing efficiency and lower the production cost. The box body 100 of the embodiment of the invention adopts a structure of combining metal plates and plastics, so that the strength is improved and the processing difficulty is reduced.

It can be appreciated that the plastic mounting frame 120 can wrap the appearance defect of the panel board 110, shield the appearance defect of the panel board 110, and the first positioning groove 121 can limit the first folded edge 130, so that the mounting frame 120 is more firm when assembled with the panel board 110.

It can be appreciated that the end portion of the box assembly adopts the plastic mounting frame 120, so that the overall deformation is smaller during operation, the gap at the joint of the two box assemblies after assembly is stable, the tightness is good, and therefore, the use of sealing materials such as sponge can be reduced.

Referring to fig. 7 and 10, the cabinet assembly according to another embodiment of the present invention, the cabinet door 200 includes a door panel 210 and a door frame 220. Door panel 210 is a sheet metal part and door frame 220 is a plastic part. The two door frames 220 are provided, and the two door frames 220 are respectively installed at the upper and lower ends of the door plate 210, thereby wrapping the door plate 210 and enhancing the overall stability of the cabinet 100. The door plate 210 and the door frame 220 are made of metal and plastic, respectively, which is also beneficial to improving the fireproof performance of the door 200 and reducing the production cost.

Referring to fig. 11, 13 and 14, the end of the door panel 210 is provided with a second flange 230, and the second flange 230 and the coaming 110 may be formed in an L shape, i.e., the second flange 230 is formed by bending the end of the door panel 210 inward by about 90 degrees, or may be formed in a U shape, i.e., the second flange 230 is formed by bending the end of the door panel 210 inward by about 90 degrees and then bending it inward again by about 90 degrees.

Referring to fig. 13 and 14, taking the door frame 220 mounted on the upper end of the door panel 210 as an example, it is to be understood that one end of the door frame 220 facing the door panel 210 (i.e., the lower end of the door frame 220 shown in fig. 14) is provided with a second positioning groove 221, the second flange 230 is disposed in the second positioning groove 221, and the second flange 230 and the second positioning groove 221 form a matched limit, so that the second flange 230 and the second positioning groove 221 can realize a predetermined position, and the second flange 230 is convenient to be fixedly connected with the door frame 220. For example, the second flange 230 may be connected to the door frame 220 by a fastener such as a screw, a rivet, or the like, and may be connected to the door frame 220 by a snap structure, which is not particularly limited herein. In addition, the second positioning groove 221 is formed in the door frame 220, so that the door frame 220 has better strength, and the structural strength of the door 200 is improved.

Referring to fig. 14, it can be understood that the door frame 220 includes a front baffle 222 and a rear baffle 223 disposed at intervals, the front baffle 222 and the rear baffle 223 being formed by extending through the lower end of the door frame 220, the front baffle 222 and the rear baffle 223 respectively forming sidewalls of the front and rear sides of the second positioning groove 221. The second flange 230 includes a first sub-flange 231 and a second sub-flange 232 that are disposed at a certain included angle, one end of the first sub-flange 231 is fixedly connected with the door panel 210, the other end is fixedly connected with the second sub-flange 232, and the second flange 230 can be integrally formed with the door panel 210. The door plate 210 is in butt joint with the front baffle 222 to realize positioning connection, and simultaneously the first sub-hem 231 is in butt joint with the bottom wall of the second positioning groove 221 to realize positioning connection, and the second sub-hem 232 is in butt joint with the rear baffle 223 to realize positioning connection, so that the door plate 210 can be in positioning connection in the second positioning groove 221, and stable connection of the door plate 210 and the door frame 220 is realized.

Referring to fig. 12 and 14, it can be appreciated that the second sub-flange 232 is coupled to the tailgate 223 by a fastener such as a screw, a rivet, or the like so that the screw hole is not exposed from the surface of the door panel 210 in order to enhance the aesthetic appearance of the door 200. As another embodiment, the door panel 210 and the door frame 220 may be fixedly connected to each other by the first sub-flange 231 and the door frame 220, or by the door panel 210 and the door frame 220.

Referring to fig. 10, 15 and 16, it can be appreciated that, in order to further improve the structural strength of the door panel 210, the door panel 210 is provided with third folded edges 240 at both sides in the left-right direction, and the two third folded edges 240 may be formed by inwardly folding the door panel 210, respectively. The third flange 240 includes a connector flange 241 and a third sub flange 242, one end of the connector flange 241 is connected to the door panel 210, and the other end is fixedly connected to the third sub flange 242. The connector flange 241 may be provided in an arc shape, so that the outer surface of the box door 200 is more beautiful; the connector flange 241 may also be provided in a flat plate shape bent at an angle to the door panel 210. The third sub-hem 242 is arranged at intervals with the door plate 210, one end of the third sub-hem 242, which is far away from the front baffle 222, of the rear baffle 223 is abutted against the third sub-hem 242 to be connected with the door frame 220 to form a structure limit, and the structure strength is good, so that the door plate 210 and the door frame 220 are connected more stably. It can be appreciated that, in order to further improve the stability of the connection between the third sub-flange 242 and the door frame 220, the left and right sides of the back plate 223 are respectively formed with a positioning block 2231, and the third sub-flange 242 abuts against one end of the positioning block 2231 away from the front plate 222. And the gap is formed between the connector flange 241 and the rear baffle 223 as well as between the connector flange and the positioning block 2231, and has a abdicating function, so that the problem caused by deformation of the sheet metal door body can be effectively avoided.

It can be appreciated that, in order to improve the sealing performance of the connection between the door 200 and the case 100, a sealing member, such as a sponge, is attached to the third sub-flange 242 and the positioning block 2231, so as to fill the gap between the door 200 and the case 100, thereby sealing the door 200 and the case 100, and improving the sealing performance of the air handling unit.

Referring to fig. 12 and 16, it will be appreciated that the rear baffle 223 is provided with a notch groove 224, the notch groove 224 is formed at one end of the positioning block 2231 or the rear baffle 223 away from the front baffle 222, and at least part of the third sub-flange 242 is disposed in the notch groove 224, so that the mating surface of the door 200 facing the box 100 is a plane, which serves as a sealing surface when the door 200 is connected to the box 100, and it is convenient to adhere a sealing member such as a sponge.

Referring to fig. 12, 14 and 17, it can be appreciated that, in order to facilitate the alignment installation of the door 200 and the case 100, a first positioning portion is provided at an end of the installation frame 120 facing the opening, and a second positioning portion is provided at the door frame 220, so that the door frame 220 is in positioning engagement with the installation frame 120, thereby facilitating the fixed connection between the door 200 and the case 100. It is understood that the first positioning portion may be the mounting groove 122, and the second positioning portion may be the mounting rib 225 that is in positioning engagement with the mounting groove 122. As another embodiment, the first positioning portion may be a mounting rib 225, and the second positioning portion is a mounting groove 122 that is in positioning engagement with the mounting rib 225.

Referring to fig. 12 and 17, it may be understood that, in the embodiment of the present invention, a mounting groove 122 is disposed at an end of the mounting frame 120 facing the door frame 220, a first mounting hole 123 is disposed in the mounting groove 122, and correspondingly, a mounting rib 225 is disposed at an end of the door frame 220 facing the mounting frame 120, a mounting post 226 is formed on the mounting rib 225, and a second mounting hole 2261 is disposed in the mounting post 226, or the mounting rib 225 and the mounting post 226 are disposed at intervals, so that the mounting rib 225 is inserted into the mounting groove 122, and fasteners such as screws and rivets are disposed in the first mounting hole 123 and the second mounting hole 2261, so that the box 100 and the box door 200 are stably connected, and stability of the air handling unit during operation is ensured.

Referring to fig. 6, it can be understood that a heat exchanger is installed in the heat exchange tank 2000, and refrigerant pipes of the heat exchanger need to pass out of the heat exchange tank 2000 through the door 200 in order to implement a refrigerant circulation circuit. Accordingly, the door panel 210 of the heat exchange case 2000 includes first and second door bodies 211 and 212 arranged in the up-down direction, and the door frame 220 includes first and second door frames 227 and 228, respectively. The first door frame 227 is connected to the upper end of the first door body 211, and the second door frame 228 is connected to the lower end of the second door body 212, and the connection manner thereof may be appropriately understood with reference to the above embodiment, so that repetition is avoided and detailed description thereof is omitted.

Referring to fig. 6, a fixing frame 250 is connected to the lower end of the first door frame 227, and the fixing frame 250 can support the first door body 211 to improve the strength of the first door body 211. The lower end of the fixing frame 250 is provided with a positioning rib 251, and the second door 212 is provided with a positioning hole (not shown in the figure) matched with the positioning rib 251. It can be appreciated that the positioning rib 251 can be designed into a buckle structure and is fastened and fixed with the positioning hole, so that stable connection between the first door 211 and the second door 212 is realized, screws can be saved, and the installation efficiency is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims

1. Air treatment unit, its characterized in that includes:

one end of the first box body is provided with a first mounting frame;

the second box body is provided with a second installation frame which is in counterpoint connection with the first installation frame at one end assembled with the first box body;

one of the first mounting frame and the second mounting frame is provided with a positioning protrusion, the other one of the first mounting frame and the second mounting frame is provided with a positioning groove matched with the positioning protrusion, and the matching surface of the positioning protrusion and the matching surface of the positioning groove are matched cambered surfaces.

2. An air treatment unit according to claim 1, wherein: the first mounting frame is provided with the positioning protrusions, and the positioning protrusions are arranged along the circumferential direction of the first mounting frame; the second mounting frame is provided with the positioning grooves, and the positioning grooves are arranged along the circumferential direction of the second mounting frame.

3. An air treatment unit according to claim 1, wherein: the first box body comprises a coaming and a first mounting frame, an opening communicated with the air flow channel is formed in the peripheral wall of the coaming, a first folded edge is formed at the end of the coaming, a first positioning groove is formed in one end, facing the coaming, of the first mounting frame, and the first folded edge is arranged in the first positioning groove and fixedly connected with the first mounting frame; the air treatment unit further comprises a box door, and the box door is arranged at the opening and connected with the first mounting frame.

4. An air treatment unit according to claim 3, wherein: the bounding wall is the sheet metal component, first installing frame is the working of plastics.

5. An air treatment unit according to claim 3, wherein: the refrigerator door comprises a door plate and a door frame, wherein a second folding edge is formed at the end part of the door plate, a second positioning groove is formed in the door frame towards one end of the door plate, and the second folding edge is arranged in the second positioning groove and fixedly connected with the door frame.

6. An air treatment unit according to claim 5, wherein: the door frame includes preceding baffle and the backplate that the interval set up, preceding baffle with the backplate forms respectively the lateral wall of the both sides of second constant head tank, the door plant with preceding baffle butt, the second flange includes first sub-hem and second sub-hem, connect respectively at the both ends of first sub-hem the door plant with the sub-hem of second, first sub-hem with the diapire butt of second constant head tank, the sub-hem of second with the backplate butt.

7. The air treatment unit of claim 6, wherein: the two sides of the rear baffle plate are respectively provided with a positioning block, the two sides of the door plate are respectively provided with a third folded edge, the third folded edge comprises third sub folded edges which are arranged at intervals with the door plate, and the third sub folded edges are abutted with one end, away from the front baffle plate, of the positioning blocks.

8. The air treatment unit of claim 7, wherein: the rear baffle is provided with a notch groove, and at least part of the third sub-folded edge is arranged in the notch groove.

9. An air treatment unit according to claim 5, wherein: the door frame is characterized in that a first positioning part is arranged at one end, facing the opening, of the first mounting frame, a second positioning part matched with the first positioning part is arranged on the door frame, and the door frame is fixedly connected with the first mounting frame.

10. The air treatment unit of claim 9, wherein: the first positioning part is provided with a first mounting hole, the second positioning part is internally provided with a second mounting hole, and the first mounting hole and the second mounting hole are internally provided with fasteners in a penetrating way.

11. An air treatment unit according to claim 5, wherein: the door plant is including the first door body and the second door body of arranging along upper and lower direction, the door frame includes first door frame and second door frame, first door frame with the upper end of the first door body is connected, the second door frame with the lower extreme of the second door body is connected, the lower extreme of the first door frame is connected with the mount, the lower extreme of mount is equipped with the location muscle, the second door body be equipped with location muscle complex locating hole.