CN218442517U

CN218442517U - Air handling unit

Info

Publication number: CN218442517U
Application number: CN202221868023.0U
Authority: CN
Inventors: 张康文; 刘雨; 王星辰; 卢绍章; 李骁扬
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: 2023-02-03
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses an air handling unit belongs to air conditioning equipment technical field, including first box, second box and coupling assembling, coupling assembling includes the handle, lock piece and hasp, can dismantle first box and second box through coupling assembling and be connected, set up handle and lock piece on first box, set up the hasp on the second box, utilize handle operation to drive lock piece and rotate, make lock piece and hasp can the lock, thereby connect locking with first box and second box, also be convenient for split first box and second box, it is simple and efficient to operate, realize quick dismantlement and assembly between the functional module, and structural design is reasonable, effectively promote air handling unit's installation effectiveness.

Description

Air treatment unit

Technical Field

The utility model belongs to the technical field of the electrical equipment technique and specifically relates to an air treatment unit is related to.

Background

The air handling unit can be structurally split between different functional modules, so that the air handling unit is convenient for users to transport and install.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an air treatment unit can realize the high-speed joint between the functional module through coupling assembling, effectively promotes the installation effectiveness.

According to the utility model discloses an air treatment unit of first aspect embodiment includes:

a first case;

a second case;

coupling assembling, including handle, locking piece and hasp, the handle with the locking piece is all located first box, the hasp is located the second box, the handle can drive the locking piece rotates, so that the locking piece with the hasp lock.

According to the utility model discloses air treatment unit has following beneficial effect at least:

can dismantle first box and second box through coupling assembling and be connected, set up coupling assembling's handle and lock piece on first box, set up the hasp on the second box, utilize handle operation to drive the lock piece and rotate, make lock piece and hasp can the lock, thereby connect first box and second box and lock, also be convenient for split first box and second box, easy and simple to handle is swift, realize quick dismantlement and assembly between the functional module, structural design is reasonable, effectively promote the installation effectiveness of air treatment unit.

According to some embodiments of the utility model, coupling assembling still include with the mounting panel that first box is connected, the handle rotates to be located one side of mounting panel, the lock piece rotates to be located the opposite side of mounting panel, the mounting panel is equipped with the through-hole, the handle is equipped with the connecting piece, the connecting piece passes through the through-hole with the lock piece is connected.

According to some embodiments of the invention, the connecting piece is located including rotating the carousel of mounting panel, the handle connect in the carousel, the carousel with the locking piece is connected.

According to the utility model discloses a some embodiments, the handle is equipped with first connecting block, the carousel is equipped with spacing hole, the carousel with be equipped with the second connecting block between the locking piece, first connecting block wears to locate spacing hole and with the second connecting block links to each other.

According to the utility model discloses a some embodiments, first connecting block is equipped with the splice bar, the second connecting block be equipped with the spread groove that the splice bar is connected.

According to the utility model discloses a some embodiments, the handle is equipped with the pivot, the handle passes through the pivot rotate connect in first connecting block.

According to the utility model discloses a some embodiments, the mounting panel orientation one side of handle is equipped with the spacing groove, the carousel rotates to be located the spacing inslot.

According to some embodiments of the utility model, the locking piece include the locking plate and protrusion in the spring bolt at locking plate edge, the hasp be equipped with the draw-in groove that the spring bolt matches.

According to some embodiments of the utility model, the spring bolt is equipped with the first spacing portion of bending formation, be equipped with the spacing portion of second in the draw-in groove, first spacing portion with the cooperation of the spacing portion of second is so that the spring bolt lock in the draw-in groove.

According to the utility model discloses a some embodiments, the locking plate is equipped with a plurality of locating holes along circumference, the mounting panel orientation locking plate one side be equipped with a plurality of bumps that the locating hole corresponds.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a connection structure of a first box and a second box according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a fastening state of the connecting assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating an unlocked state of the connecting assembly according to an embodiment of the present invention;

fig. 4 is an exploded schematic view of a connection assembly according to an embodiment of the present invention;

fig. 5 is a schematic view of a rear side view of a fastening state of a connecting assembly according to an embodiment of the present invention;

fig. 6 is a schematic rear side view of an unlocked state of a coupling assembly according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a heat exchange module according to an embodiment of the present invention.

Reference numerals:

a heat exchange module 100; a first case 110;

a second case 200;

a connecting assembly 300; an operating mechanism 310; a latch 320; a card slot 321; a bump 322; a handle 330; the first connection block 331; the connecting ribs 332; a second connection block 333; a connecting groove 334; a lock 340; the locking piece 341; a latch bolt 342; a recess 343; a connection hole 344; positioning holes 345; a mounting plate 350; a through hole 351; a limiting groove 352; an annular rib 353; the attachment ears 354; a bump 355; a turntable 360; a stopper hole 361; a flange 362.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device 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, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, it should be noted that words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the words in the present invention by combining the specific contents of the technical solution.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the embodiments described below are some, not all embodiments of the present invention.

An air handling unit according to an embodiment of the present invention, which is specifically an american duct type air handling unit, is described with reference to fig. 1 to 7, and the air handling unit is explained below with specific examples.

Referring to fig. 1, an embodiment of the present invention provides an air handling unit, including a heat exchange module 100 and a fan module, where the heat exchange module 100 and the fan module adopt a detachable structure. The heat exchange module 100 includes a first box 110, a heat exchanger is installed in the first box 110, the blower module includes a second box 200, a blower is installed in the second box 200, the first box 110 and the second box 200 are connected to form an integral box structure, and the specific structures of the heat exchanger and the blower are not shown in the drawing. It can be understood that, after the assembly, the first box 110 is communicated with the inside of the second box 200, and the air can be sent into the first box 110 by the fan to exchange heat with the heat exchanger, and then discharged after exchanging heat, so as to achieve the purpose of cooling or heating.

Wherein, first box 110 detachably installs on second box 200, makes heat exchange module 100 and fan module can realize dismantling the separation, realizes the modular assembly of air handling unit, in the installation transportation, can transport after heat exchange module 100 and the split of fan module as required, and convenient assembling is swift, is favorable to improving the installation effectiveness of wind air handling unit, the maintenance of the air handling unit of also being convenient for.

Fig. 1 is a view showing a connection state between a first casing 110 and a second casing 200, and one side wall of each of the first casing 110 and the second casing 200 is omitted in fig. 1. It is understood that the first casing 110 is coupled to the second casing 200 by a coupling assembly 300, the first casing 110 is coupled to the upper end of the second casing 200, and the coupling assembly 300 is mounted to the first casing 110 and the second casing 200.

Specifically, referring to fig. 2, the coupling assembly 300 of the embodiment includes an operating mechanism 310 and a lock catch 320, the operating mechanism 310 includes a handle 330 and a locking member 340, the handle 330 is convenient for a user to operate manually, the locking member 340 can be driven by the handle 330 to rotate, the locking member 340 and the lock catch 320 can cooperate to connect the operating mechanism 310 and the lock catch 320, the locking member 340 and the lock catch 320 can be in various forms, the locking member 340 can be a lock tongue, a lock pin, etc., and the lock catch 320 can be matched with the corresponding locking member 340, for example, the lock pin can be inserted into the lock catch 320 for locking.

In the embodiment shown in fig. 1, the actuator 310 is mounted on the first casing 110, the latch 320 is mounted on the second casing 200, the actuator 310 is disposed near the lower end of the first casing 110, and the latch 320 is disposed near the upper end of the second casing 200. The handle 330 is exposed out of the surface of the first box 110, the locking member 340 is installed on the sidewall of the first box 110, the latch 320 is installed on the sidewall of the second box 200, the outer sides of the first box 110 and the second box 200 are both provided with a panel, the panel of the first box 110 is provided with an opening corresponding to the handle 330, and the structure of the panel is not shown in fig. 1.

It can be understood that, referring to fig. 1 and 2, when the first casing 110 is butted with the second casing 200, the locking member 340 corresponds to the position of the lock catch 320, and at this time, the manual operation of the rotating handle 330 can drive the locking member 340 to rotate together, so that the locking member 340 can correspondingly lock with the lock catch 320, thereby locking the first casing 110 with the second casing 200, and fig. 2 shows that the operating mechanism 310 and the lock catch 320 are in a locked state. Referring to fig. 3, when the handle 330 is rotated reversely, the handle 330 drives the locking member 340 to rotate, so that the locking member 340 is separated from the latch 320, and thus the first box 110 and the second box 200 can be detached and separated, which is convenient to operate, and fig. 3 shows that the operating mechanism 310 and the latch 320 are in an unlocked state.

It should be noted that, in the embodiment, the first box 110 and the second box 200 are square bodies, after the first box 110 and the second box 200 are detached, the heat exchange module 100 and the fan module are convenient to transport, and the connection assembly 300 of the embodiment can connect the heat exchange module 100 and the fan module, so that the functional modules are quickly detached and assembled, and the installation efficiency of the air handling unit is effectively improved. It is understood that the first casing 110 and the second casing 200 may be provided with corresponding positioning structures, for example, the first casing 110 and the second casing 200 may be positioned in a horizontal direction or a vertical direction, so that the first casing 110 and the second casing 200 can be quickly abutted when being assembled, and then the first casing 110 and the second casing 200 are locked by the connection assembly 300, so as to achieve the purpose of quick assembly, and the installation efficiency is higher.

Referring to fig. 1 and 2, in some embodiments, the handle 330 and the locking member 340 are mounted on the first casing 110 by a mounting plate 350, and a coupling lug 354 is provided at an edge of the mounting plate 350, and the coupling lug 354 is coupled to the first casing 110 by a screw, so that the mounting plate 350 is fixed to the first casing 110. Of course, the first casing 110 may be connected to the first casing by screws directly penetrating through the mounting plate 350, which is not further limited. It can be understood that the handle 330 and the locking member 340 are assembled on the mounting plate 350, and further the mounting plate 350 is combined with the first box 110 to form an integrated structure, wherein the locking member 340 and the mounting plate 350 are hidden on the side wall of the first box 110, so that the mounting space is saved, the design is reasonable, the operation of the functional module is not affected by the whole operating mechanism 310, and the optimization of the space structure is realized.

It should be noted that, in some embodiments, the first box 110 may be used to mount a fan, the second box 200 may be used to mount a heat exchanger, that is, the operating mechanism 310 may be mounted on the heat exchange module, and the latch 320 is mounted on the fan module, and the specific connection structure may refer to the above embodiments, which are not described herein again. In addition, one or more connecting components 300 may be disposed on the first box 110 and the second box 200 according to actual installation, for example, the operating mechanisms 310 are disposed on two opposite sides of the first box 110, and the latches 320 are disposed on two opposite sides of the second box 200, so that the connecting structure between the heat exchange module 100 and the fan module is more stable and reliable.

In some embodiments, the air handling unit is not limited to include the heat exchange module 100 and the fan module, and according to functional requirements, the air handling unit may further include a filter screen module, a fresh air module, an electric heating module, and other functional modules, and the connecting assembly 300 of the embodiment may connect the functional modules with the heat exchange module 100 or the fan module, so that the plurality of functional modules may be structurally detachable, and may be more flexibly and conveniently mounted and transported. For example, in the embodiment shown in fig. 1, an operating mechanism 310 for connecting a filter screen module may be added to the second box 200, and a lock 320 is disposed on the filter screen module, and the detailed connection structure is not described again.

Referring to fig. 4, fig. 4 shows an exploded structure of the operating mechanism 310, and as can be understood from fig. 2 and 3, with the direction shown in fig. 4 as a reference direction, the handle 330 is disposed on the front side of the mounting plate 350, the locking member 340 is disposed on the rear side of the mounting plate 350, the handle 330 and the locking member 340 are both rotatably disposed, and a through hole 351 is disposed at an intermediate position of the mounting plate 350, the through hole 351 penetrating through the front side and the rear side of the mounting plate 350. The handle 330 and the locking member 340 are connected by a connecting member, so that the handle 330 and the locking member 340 can be linked. The connecting member may be a rotating shaft, a threaded rod, a connecting block, etc., and the handle 330 can drive the locking member 340 to rotate through the connecting member of the above example, for example, the handle 330 can be connected with the locking member 340 through the rotating shaft passing through the through hole 351, and the locking member 340 can be driven to rotate together when the handle 330 is rotated.

It will be appreciated that the front side of the mounting plate 350 faces the outside of the first casing 110, and the handle 330 is required to be limited to the front side of the mounting plate 350, so that the handle 330 can be exposed to the outer wall of the first casing 110 for the operation of holding the handle 330. As shown in fig. 4, in some embodiments, the handle 330 is disposed in a semicircular shape, and the connecting member used in the embodiments includes a rotating disc 360, the rotating disc 360 is rotatably disposed on the front side surface of the mounting plate 350, the handle 330 is connected to the rotating disc 360, the handle 330 is disposed on the front side surface of the rotating disc 360, the rear side surface of the rotating disc 360 is connected to the locking member 340, and when the handle 330 is rotated, the rotating disc 360 rotates along with the handle 330 and drives the locking member 340 to rotate together.

Referring to fig. 4, wherein the diameter of the rotation disc 360 is greater than the diameter of the through hole 351, the rotation disc 360 covers the through hole 351, the handle 330 can be limited by the rotation disc 360, the handle 330 is prevented from passing through the through hole 351, the handle 330 is kept at the front side of the mounting plate 350, and the rotation disc 360 can improve the stability of the connection structure of the handle 330, so that the rotation of the handle 330 is more stable.

Specifically, the handle 330 is provided with a first connecting block 331, the handle 330 is rotatably connected to the first connecting block 331 through a rotating shaft, the rotating disc 360 is provided with a limiting hole 361, as shown in fig. 4, the limiting hole 361 is rectangular, the first connecting block 331 is substantially rectangular, and the first connecting block 331 is matched with the limiting hole 361, so that the first connecting block 331 can just pass through the limiting hole 361. The second connecting block 333 is arranged between the rotary disc 360 and the locking piece 340, namely the second connecting block 333 is positioned at the rear side of the rotary disc 360, the size of the second connecting block 333 is larger than that of the limiting hole 361, so that the second connecting block 333 cannot penetrate through the limiting hole 361, and the first connecting block 331 penetrates through the limiting hole 361 and is connected with the second connecting block 333.

It can be understood that the handle 330 is connected to both sides of the first connecting block 331 along the length direction, the overall length of the handle 330 connected to the first connecting block 331 is greater than the length of the position-limiting hole 361, and due to the limitation of the handle 330, a part of the first connecting block 331 can pass through the position-limiting hole 361, and the other part protrudes from the front side of the rotating disc 360. Meanwhile, the rear side surface of the turntable 360 is connected with the first connecting block 331 through the second connecting block 333, so that the position of the first connecting block 331 passing through the limiting hole 361 is limited, that is, the handle 330 and the second connecting block 333 are limited at the front and rear sides of the turntable 360, thereby connecting the handle 330 and the turntable 360 together.

As shown in fig. 4, the first connecting block 331 is provided with a connecting rib 332, the second connecting block 333 is provided with a connecting groove 334 connected with the connecting rib 332, the first connecting block 331 passes through the limiting hole 361 and then is inserted into the connecting groove 334 through the connecting rib 332, in the embodiment, corresponding screw holes are respectively provided on the connecting rib 332 and the connecting groove 334, and a screw passes through the screw hole to lock the connecting rib 332 in the connecting groove 334, so that the first connecting block 331 and the second connecting block 333 are fixedly connected.

It should be noted that, in the embodiment, the first connecting block 331 is provided with two connecting ribs 332, the second connecting block 333 is correspondingly provided with two connecting grooves 334, each connecting rib 332 is correspondingly inserted into one connecting groove 334 for connection, and the connecting ribs 332 are locked in the connecting grooves 334 by using a plurality of screws, so that the stability of the connecting structure between the first connecting block 331 and the second connecting block 333 is effectively improved, and the connecting structure is firmer and more reliable.

Wherein, as shown in fig. 4, the front side of the mounting plate 350 is provided with a limit groove 352 matched with the turntable 360, and the turntable 360 is rotatably arranged in the limit groove 352, so that the problem of deviation of the turntable 360 can be reduced, and the stability of the rotation of the turntable 360 can be improved. It can be understood that the annular rib 353 is arranged on the front side surface of the mounting plate 350, the limiting groove 352 is formed by surrounding the annular rib 353, the flange 362 abutted to the annular rib 353 is arranged on the outer periphery of the rotary table 360 to effectively limit the rotary table 360, and the panel of the first box body 110 can cover the position of the annular rib 353 to expose the rotary table 360 and the handle 330.

Referring to fig. 2 and 3, after the handle 330 is assembled in place, the handle 330 is located at the front side of the turntable 360 and can rotate around the first connecting block 331, when the handle 330 needs to be operated, the handle 330 rotates and unfolds so as to facilitate the rotation of the handle 330, and at this time, the handle 330 protrudes out of the surface of the first box 110, and fig. 2 is a schematic diagram illustrating an unfolded state of the handle 330. The handle 330 may also be attached to the front side surface of the rotating disc 360 in a rotating manner, so that the handle 330 is accommodated in the rotating disc 360, and at this time, the handle 330 does not protrude out of the surface of the first casing 110, as shown in fig. 3, a schematic view of the accommodated state of the handle 330 is shown.

Referring to fig. 7, taking the heat exchange module 100 as an example for illustration, the handles 330 are disposed on two opposite sidewalls of the first box 110, and when the heat exchange module is assembled, the handles 330 on the two sides drive the corresponding locking members 340 to rotate, so that the locking members 340 are coupled with the latches 320 of the second box 200. After the heat exchange module 100 and the fan module are detached, the handles 330 on the two sides of the first box 110 can be held by hands for carrying, so that the operation is more convenient; accomodate in carousel 360 when handle 330 does not use, do not bulge in first box 110's the outside, not only optimize spatial structure, can solve the puzzlement that handle 330 arch caused in the use moreover, also have the optimization effect to the harmony of outward appearance, compromise convenience and the outward appearance harmony of use, design more rationally.

Referring to FIG. 5, FIG. 5 illustrates a rear side view of the mounting plate 350. In some embodiments, the locking member 340 includes a locking piece 341 and a locking tongue 342 protruding from an edge of the locking piece 341, the locking piece 341 is connected to the turntable 360, and a locking groove 321 matching with the locking tongue 342 is disposed in the lock catch 320. When the handle 330 is rotated, the rotating disc 360 drives the locking plate 341 to rotate together, so that the locking tongue 342 swings and is inserted into the locking groove 321 for locking. The locking plate 341 has three connecting holes 344, and is connected to the rotation disc 360 through the connecting holes 344 via screw holes. It should be noted that the second connecting block 333 is located between the rotating disc 360 and the locking plate 341 to play a positioning role, so as to maintain a stable gap between the rotating disc 360 and the locking plate 341 and improve the structural stability.

Referring to fig. 5, the edge of the locking plate 341 extends outward to form a locking tongue 342, a first limiting portion is disposed on the locking tongue 342, a second limiting portion is disposed in the locking groove 321, and the locking tongue 342 can be locked in the locking groove 321 by the cooperation of the first limiting portion and the second limiting portion. Specifically, the first limiting portion may be a groove 343 formed in the locking tongue 342 by stamping, the second limiting portion is a protrusion 322 disposed in the slot 321, the protrusion 322 is located on a side wall of the slot 321 and is matched with the groove 343, and when the locking tongue 342 is inserted into the slot 321, the locking tongue 342 can be locked by matching the protrusion 322 with the groove 343.

It can be understood that, when the handle 330 drives the locking plate 341 to rotate, the locking plate 341 can rotate at an angle of 180 °, that is, the locking tongue 342 can rotate clockwise or counterclockwise, in the embodiment, the groove 343 and the protrusion 322 are arranged to have a certain arc, and when the locking tongue 342 swings and is inserted into the locking groove 321, the protrusion 322 and the groove 343 can slide relatively.

As shown in fig. 5, the connection state between the latch 342 and the latch 320 is schematically illustrated, and the dotted line is a connection structure between the protrusion 322 and the groove 343 inside the slot 321, and the latch 342 is limited in the vertical direction by the engagement of the protrusion 322 and the groove 343, so as to lock the first box 110 and the second box 200. When the locking tongue 342 is rotated clockwise or counterclockwise, the locking tongue 342 can be disengaged from the locking groove 321, fig. 6 is a schematic view illustrating a state where the locking tongue 342 is separated from the lock catch 320, where the first casing 110 and the second casing 200 are detachably separated. It should be noted that the manner of engaging the latch tongue 342 with the buckle 320 is not limited to the structure shown in the above embodiment, for example, a buckle may be provided on the latch tongue 342, and a latch matching the buckle may be provided in the slot 321 for engagement.

With reference to fig. 5 and 6, in the embodiment, a plurality of positioning holes 345 are circumferentially disposed on the locking plate 341, and a plurality of protrusions 355 corresponding to the positioning holes 345 are disposed on the rear side surface of the mounting plate 350, it can be understood that each protrusion 355 can be correspondingly inserted into one positioning hole 345, the protrusion height of the protrusion 355 is small, and the friction force of the rotation of the locking plate 341 can be increased by the cooperation of the protrusion 355 and the positioning hole 345, without restricting the rotation of the locking plate 341, so that a certain damping effect is generated during the rotation of the locking plate 341, the operation of the handle 330 is easier to position, and the structural stability is improved. The number of the protruding points 355 and the positioning holes 345 may be set according to the actual use requirement, and is not limited.

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

Claims

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

a first case;

a second case;

2. The air handling unit of claim 1, wherein the coupling assembly further includes a mounting plate coupled to the first housing, the handle rotatably disposed on one side of the mounting plate, the lock rotatably disposed on the other side of the mounting plate, the mounting plate having a through hole, the handle having a connector coupled to the lock through the through hole.

3. The air handling unit of claim 2, wherein the coupling member includes a dial rotatably mounted to the mounting plate, the handle being coupled to the dial, the dial being coupled to the locking member.

4. The air handling unit of claim 3, wherein the handle includes a first connecting block, the turntable includes a limiting hole, a second connecting block is disposed between the turntable and the locking member, and the first connecting block is inserted into the limiting hole and connected to the second connecting block.

5. The air handling unit of claim 4, wherein the first connector block is provided with a connector rib, and the second connector block is provided with a connector groove connected to the connector rib.

6. The air handling unit of claim 4, wherein the handle is provided with a pivot through which the handle is rotatably coupled to the first linkage block.

7. The air handling unit of claim 3, wherein a retaining groove is formed in a side of the mounting plate facing the handle, and the rotary plate is rotatably disposed in the retaining groove.

8. The air handling unit of any of claims 2 to 7, wherein the locking member comprises a locking plate and a locking tongue protruding from an edge of the locking plate, and the lock catch is provided with a slot matching with the locking tongue.

9. The air handling unit according to claim 8, wherein the latch has a first limit portion formed by bending, the slot has a second limit portion, and the first limit portion and the second limit portion cooperate to lock the latch in the slot.

10. The air handling unit of claim 8, wherein the locking plate has a plurality of positioning holes along a circumferential direction, and the mounting plate has a plurality of protrusions corresponding to the positioning holes on a side of the mounting plate facing the locking plate.