Open island cabinet with novel air outlet structure

Abstract

An open island counter with a new air outlet structure, comprising a bottom cabinet, a display cabinet, and an air outlet assembly. The air outlet assembly comprises an air outlet bottom cover, a baffle bracket, a baffle assembly, and an air outlet top cover. The air outlet bottom cover comprises a plurality of bottom cover mounting holes. The baffle assembly comprises a first baffle, a second baffle, and a third baffle. The first, second, and third baffles respectively comprise a plurality of first, second, and third baffle mounting holes. The air outlet top cover comprises a plurality of top cover mounting holes. The baffle bracket comprises a plurality of first mounting holes corresponding to the bottom cover mounting holes, second mounting holes corresponding to the first, second, and third baffle mounting holes, and third mounting holes corresponding to the top cover mounting holes. The air outlet top cover, the baffle assembly, and the air outlet bottom cover are respectively screwed to the baffle assembly through screws.

Description

Technical Field

[0001] This utility model belongs to the field of refrigerator technology, and in particular to an open island refrigerator with a novel air outlet structure. Background Technology

[0002] Refrigerated display cases, also known as refrigerators or freezers, are devices used to refrigerate various foods such as cakes, fruits, and beverages, maintaining their freshness and enhancing their taste through a low-temperature environment. In large supermarkets and outdoor marketing, refrigerated display cases are used for food display and sales. Refrigerated display cases in related technologies include the cabinet body and air outlet components. However, in existing technologies, the air outlet panels in the air outlet components are manufactured using a welding process. This process requires a high level of technical skill from the installers, making installation and assembly extremely inconvenient. Furthermore, the welding point positions depend entirely on the individual operator's skill, resulting in inconsistent weld points. This leads to uneven airflow in the air outlet components, scattered airflow, and ultimately, airflow instability.

[0003] For example, in the utility model patent with publication number CN212057878U, the ventilation pipe and the open exhaust head are fixed to the refrigerator body by welding. The welding point connection position depends entirely on the individual operation of the construction personnel, resulting in the welding point being unstable and inconvenient for the initial installation and subsequent maintenance and replacement. Summary of the Invention

[0004] In view of this, the present invention provides an open island cabinet with a novel air outlet structure to solve the above problems.

[0005] An open-style island cabinet with a novel air outlet structure includes a base cabinet for cooling, a display cabinet connected to the base cabinet, and an air outlet assembly located between the base cabinet and the display cabinet. The air outlet assembly guides and delivers the cooled air from the base cabinet to the display cabinet. The air outlet assembly includes an air outlet base cover connected to the base cabinet, multiple air guide plate supports connected to the air outlet base cover, a set of air guide plate assemblies mounted on the air guide plate supports, and an air outlet top cover connected to the air guide plate supports and positioned opposite the air outlet base cover. The air outlet base cover includes multiple base cover mounting holes. The air guide plate assembly includes a first air guide plate, a second air guide plate spaced apart from the first air guide plate, and a third air guide plate spaced apart from the second air guide plate. The first, second, and third air guide plates each include multiple first, second, and third air guide mounting holes. The air outlet top cover includes multiple top cover mounting holes. The air guide plate bracket includes a plurality of first mounting holes corresponding to the bottom cover mounting holes, a plurality of second mounting holes corresponding to the first, second, and third air guide mounting holes, and a plurality of third mounting holes corresponding to the top cover mounting holes.

[0006] Furthermore, the base cabinet includes a base cabinet body, a refrigeration component located inside the base cabinet body, and a cold air circulation channel opened on the base cabinet body and communicating with the display cabinet.

[0007] Furthermore, the refrigeration assembly includes a compressor for powering the refrigeration assembly, a condenser connected to the compressor via piping, and an evaporator connected to the condenser via piping.

[0008] Furthermore, the display case includes a display case body and at least one shelf located within the display case body for accommodating and storing items to be refrigerated for display.

[0009] Furthermore, the air outlet cover also includes a cover body and a plurality of insertion slots formed on the cover body and corresponding to the cover mounting holes, the insertion slots being used to insert the air guide plate bracket.

[0010] Furthermore, the air guide plate bracket also includes a bracket body, a bottom cover bend located on the side of the bracket body facing the bottom air outlet cover, a top cover bend located on the side of the bracket body facing the top air outlet cover, a plurality of air guide abutments spaced apart and located between the bottom cover bend and the top cover bend, and a plurality of air guide mounting slots located between two adjacent air guide abutments. The first mounting hole is opened on the bottom cover bend, the second mounting hole is opened on the top cover bend, and the third mounting hole is opened on the air guide abutment.

[0011] Furthermore, the first air guide plate also includes a first air guide plate body and a first insertion protrusion located on the first air guide plate body, and the first air guide mounting hole is formed on the first air guide plate body.

[0012] Furthermore, the second air guide plate also includes a second air guide plate body and a second insertion protrusion located on the second air guide plate body, and the second air guide mounting hole is formed on the second air guide plate body.

[0013] Furthermore, the third air guide plate also includes a third air guide plate body, a third insertion protrusion located on the third air guide plate body, and a plurality of positioning grooves located on the third air guide plate body and used for inserting the air guide abutment top. The third air guide mounting hole is opened on the third air guide plate body, and the third insertion protrusion fits against the air guide plate bracket.

[0014] Furthermore, the air outlet cover also includes a cover body, the cover mounting holes are formed on the cover body, and the cover body is a rectangular plate with a hollow interior and open adjacent sides.

[0015] Compared with existing technologies, the open island cabinet with a novel air outlet structure provided by this utility model uses screws passing through the first, second, and third air guide mounting holes to fix the first, second, and third air guide plates onto the air guide plate bracket. Screws are also used to pass through the top cover mounting hole and the second mounting hole to fix the air outlet top cover onto the air guide plate bracket, and screws are used to pass through the bottom cover mounting hole and the first mounting hole to fix the air outlet bottom cover onto the air guide plate bracket. Compared with traditional welding, fixing the air outlet assembly with screws not only reduces the process requirements for assembly workers, but also facilitates both initial assembly and subsequent maintenance and replacement. Furthermore, the evenly spaced first, second, and third air guide plates evenly distribute the gas flow channels, resulting in more uniform airflow, better cooling effect, and effectively improved performance and user experience of the open island cabinet. Attached Figure Description

[0016] Figure 1 This utility model provides a structural schematic diagram of an open island cabinet with a novel air outlet structure.

[0017] Figure 2 for Figure 1 A schematic diagram of the internal structure of an open island cabinet with a novel air outlet structure.

[0018] Figure 3 for Figure 1 An exploded view of the open island cabinet with a novel air outlet structure.

[0019] Figure 4 for Figure 3 An exploded view of the air outlet components of an open island cabinet with a novel air outlet structure.

[0020] Figure 5 for Figure 4 An exploded view of the air outlet components of an open island cabinet with a novel air outlet structure from another direction.

[0021] Figure 6 for Figure 4 A schematic diagram of the air guide plate support of an open island cabinet with a novel air outlet structure.

[0022] Figure 7 for Figure 4 An exploded view of the air guide plate assembly of the open island cabinet with a novel air outlet structure. Detailed Implementation

[0023] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0024] like Figures 1 to 7 The diagram shown is a structural schematic of an open island cabinet with a novel air outlet structure provided by this utility model. The open island cabinet with the novel air outlet structure includes a base cabinet 10 for cooling, a display cabinet 20 connected to the base cabinet 10, and an air outlet assembly 30 located between the base cabinet 10 and the display cabinet 20. The open island cabinet with the novel air outlet structure also includes other functional modules, such as assembly components for installing the open island cabinet with the novel air outlet structure, etc., which should be known to those skilled in the art and will not be described in detail here.

[0025] like Figure 1 As shown, the base cabinet 10 is used to support the display cabinet 20 and supply cold air to the display cabinet 20. The base cabinet 10 includes a base cabinet body 11, a refrigeration component 12 located inside the base cabinet body 11, and a cold air circulation channel 13 opened on the base cabinet body 11 and communicating with the display cabinet 20.

[0026] The base cabinet body 11 is used to house the refrigeration component 12, and it is a closed rectangular frame. It is easy to see that bolt holes are provided on the surface of the base cabinet body 11 to facilitate bolting the base cabinet body 11 onto the display cabinet 20. It is also easy to see that a caster wheel (not shown) is connected to the end of the base cabinet body 11 away from the display cabinet 20 to facilitate pushing the open island cabinet with the novel air outlet structure. The caster wheel (not shown) is a type of movable caster that allows 360-degree horizontal rotation; it should be considered existing technology and will not be described in detail here.

[0027] like Figure 2 As shown, the refrigeration component 12 is used to generate cold air and flow into the display case 20 through the cold air circulation channel 13 to cool the display case 20. The refrigeration component 12 includes a compressor 121 for providing power to the refrigeration component 12, a condenser 122 connected to the compressor 121, and an evaporator 123 connected to the condenser.

[0028] The compressor 121 is used to compress low-temperature, low-pressure refrigerant vapor to a high-temperature, high-pressure state so that the refrigerant vapor can be condensed using room-temperature air or water as a cooling medium. This should be a prior art, and will not be described in detail here.

[0029] The condenser 122 is used to remove heat from the high-temperature, high-pressure refrigerant vapor from the compressor 121, thereby cooling and condensing the high-temperature, high-pressure refrigerant vapor into a high-pressure, room-temperature refrigerant liquid. It is a heat exchange device, a concept well-known to those skilled in the art. The condenser 122 is located between the compressor 121 and the evaporator 123, with one end connected to the compressor 121 and the other end connected to the evaporator 123. It is easy to imagine that the condenser 122 is also connected to a throttling device (not shown). This throttling device is used to reduce the pressure of the high-pressure, room-temperature refrigerant liquid from the condenser 122 to a low-temperature, low-pressure refrigerant before sending it into the evaporator for absorption and evaporation; this concept is also well-known to those skilled in the art.

[0030] The evaporator 123 is used to evaporate the low-temperature, low-pressure refrigerant liquid into vapor to absorb the energy of the substance being cooled, thereby cooling the substance and achieving the purpose of freezing and refrigerating food. It should be an existing technology and will not be described in detail here.

[0031] The compressor 121, the condenser 122, and the evaporator 123 are connected by a pipe (not shown).

[0032] like Figure 3 As shown, the cold air circulation channel 13 is located at the connection between the base cabinet 10 and the display cabinet 20. Cold air cooled by the refrigeration component 12 flows into the display cabinet 20 through the cold air circulation channel 13 to refrigerate the items inside the display cabinet 20.

[0033] like Figure 3 As shown, the display case 20 is used to accommodate items to be refrigerated and displayed, such as cakes and ice cream. The display case 20 includes a display case body 21 and at least one shelf 22 located within the display case body 21 for accommodating and storing items to be refrigerated and displayed.

[0034] The display cabinet body 21 is used to support the shelf 22 and the air outlet assembly 30. It can be a closed rectangular frame and is fixed to the base cabinet body 11 by bolts. It is easy to see that bolt holes are opened on the surface of the display cabinet body 21 to facilitate the bolt fixing of the display cabinet body 21 to the base cabinet body 11.

[0035] The shelf 22 is used to accommodate items to be refrigerated and displayed, and it can be a rectangular shelf.

[0036] like Figure 4As shown, the air outlet assembly 30 is used to guide and deliver the cold air from the base cabinet 10 to the display cabinet 20. The air outlet assembly 30 includes an air outlet base cover 31 connected to the cold air circulation channel 13, multiple air guide plate supports 32 connected to the air outlet base cover 31, a set of air guide plate assemblies 33 mounted on the air guide plate supports 32, and an air outlet top cover 34 connected to the air guide plate supports 32 and positioned opposite the air outlet base cover 31. The air outlet assembly 30 is made of food-grade stainless steel, which not only provides excellent corrosion and wear resistance, ensuring the service life of the structure, but also meets food hygiene safety standards and will not harm the user's health.

[0037] like Figure 5 As shown, the air outlet bottom cover 31 is used to support the air guide plate bracket 32. It includes a bottom cover body 311, a plurality of bottom cover mounting holes 312 opened on the bottom cover body 311, and a plurality of insertion slots 313 opened on the bottom cover body 311 and corresponding to the bottom cover mounting holes 312.

[0038] The bottom cover body 311 is a semi-open hollow rectangular frame.

[0039] The bottom cover mounting hole 312 is used to mate with the first mounting hole 326 described below to bolt the air guide plate bracket 32 ​​onto the air outlet bottom cover 31. The number of bottom cover mounting holes 312 can be set according to actual needs. In this embodiment, there are three bottom cover mounting holes 312, which are evenly distributed on the bottom cover body 311.

[0040] The insertion slot 313 is used to insert the air guide plate bracket 32. The number of insertion slots 313 is determined by the number of bottom cover mounting holes 312. The number of insertion slots 313 is equal to the number of bottom cover mounting holes 312. In this embodiment, the number of insertion slots 313 is also three.

[0041] like Figure 6 As shown, the air guide plate bracket 32 ​​is used to support the air guide plate assembly 33. It is a stepped plate body bent to one side. The number of air guide plate brackets 32 is determined by the number of bottom cover mounting holes 312. The number of air guide plate brackets 32 and the number of bottom cover mounting holes 312 are equal. In this embodiment, there are three air guide plate brackets 32. The three air guide plate brackets 32 are evenly spaced, and the three air guide plate brackets 32 have the same structure and function. Only one of them will be briefly described below.

[0042] The air guide plate bracket 32 ​​includes a bracket body 321, a bottom cover bending portion 322 located on the side of the bracket body 321 facing the air outlet bottom cover 31, a top cover bending portion 323 located on the side of the bracket body 321 facing the air outlet top cover 34, a plurality of air guide abutments 324 spaced apart and located between the bottom cover bending portion 322 and the top cover bending portion 323, and a plurality of air guide mounting grooves 325 located between two adjacent air guide abutments 324.

[0043] The support body 321 is a stepped rectangular plate, and the stepped rectangular plate gradually rises from the bottom air outlet cover 31 toward the top air outlet cover 34.

[0044] The bottom cover bending portion 322 is used to install and fix the air outlet bottom cover 31 on the air guide plate bracket 32. The bottom cover bending portion 322 and the insertion slot 313 are adapted in size and shape. When the bottom cover bending portion 322 is inserted into the insertion slot 313, the air guide plate bracket 32 ​​is relatively fixed on the air outlet bottom cover 31.

[0045] The bottom bend 322 is also provided with a first mounting hole 326 corresponding to the bottom cover mounting hole 312. The radius of the first mounting hole 326 is equal to the radius of the bottom cover mounting hole 312.

[0046] The top cover bending portion 323 is used to install and fix the air outlet top cover 34 onto the air guide plate bracket 32. The top cover bending portion 323 is also provided with at least one second mounting hole 327 corresponding to the top cover mounting hole 342 described below.

[0047] The second mounting hole 327 is used to screw the air outlet cover 34 onto the air guide plate bracket 32.

[0048] The air guide top 324 is used to mount and fix the air guide plate assembly 33 on the air guide plate bracket 32. Multiple air guide tops 324 are spaced apart and evenly distributed. Each air guide top 324 also has a third mounting hole 328. The number of air guide tops 324 can be set according to actual needs; in this embodiment, the number of air guide tops 324 is three.

[0049] The air guide mounting groove 325 is used to install and insert the air guide plate assembly 33. Its specific working principle will be described below in conjunction with the air guide plate assembly 33.

[0050] like Figure 7As shown, the air guide plate assembly 33 is used to guide the cold air in the base cabinet 10 into the display cabinet 20, and it includes multiple air guide plates. The number of air guide plates is determined by the number of air guide plates at the top 324. The number of air guide plates and the number of air guide plates at the top 324 are both three, namely the first air guide plate 331, the second air guide plate 332, and the third air guide plate 333.

[0051] The first air guide plate 331 includes a first air guide plate body 3311, a plurality of first air guide mounting holes 3312 formed on the first air guide plate body 3311, and a first insertion protrusion 3313 located on the first air guide plate body 331.

[0052] The first air guide plate body 3311 is used to guide and deliver the cold air from the base cabinet 10 into the display cabinet 20, and it is a rectangular plate.

[0053] The first air guide mounting hole 3312 is used to mount and fix the first air guide plate 331 on the air guide plate bracket 32. The first air guide mounting hole 3312 and the third mounting hole 328 are correspondingly provided, and the size of the hole radius of the first air guide mounting hole 3312 is equal to the size of the hole radius of the third mounting hole 328.

[0054] The first insertion protrusion 3313 is used to quickly position and fix the first air guide plate 331 in the insertion groove 313.

[0055] The second air guide plate 332 and the third air guide plate 333 have the same structure and function as the first air guide plate 331, differing only in their plate widths. Specifically, the width of the first air guide plate 331 is the distance between one of the air guide tops 324, the width of the second air guide plate 332 is the distance between two of the air guide tops 324, and the width of the third air guide plate 333 is the distance between three of the air guide tops 324. The first air guide plate 331, the second air guide plate 332, and the third air guide plate 333 evenly separate the gas during airflow, resulting in more uniform airflow, better cooling effect, and effectively improved performance and user experience of the open island cabinet.

[0056] For ease of understanding, the structure of the second air guide plate 332 and the third air guide plate 333 will be briefly described below. The second air guide plate 332 includes a second air guide plate body 3321, a plurality of second air guide mounting holes 3322 installed within the second air guide plate body 3321, and a second insertion protrusion 3323 located on the second air guide plate body 3321. The third air guide plate 333 includes a third air guide plate body 3331, a plurality of third air guide mounting holes 3332 installed within the third air guide plate body 3331, and a third insertion protrusion 3333 located on the third air guide plate body 3331. Since the air guide mounting groove 325 is located between two adjacent air guide abutments 324, and because the number of air guide mounting grooves 325 is less than the number of air guide plates, the third insertion protrusion 3333 cannot be inserted into the air guide mounting groove 325; therefore, it is installed close to the air guide plate bracket 32 ​​along its edge. The third air guide plate 33 also includes a plurality of positioning grooves 3334 located on the third air guide plate body 3331 for inserting into the air guide top 324. The size and shape of the positioning grooves 3334 are adapted to the size and shape of the air guide top 324. When the air guide top 324 is inserted into the positioning grooves 3334, the third air guide plate 333 is relatively fixed on the air guide plate bracket 32.

[0057] The exhaust top cover 34 is used to prevent cold air inside the cabinet 10 from overflowing from other directions, and it covers and fastens to the air guide plate assembly 33. The exhaust top cover 34 includes a top cover body 341 and a plurality of top cover mounting holes 342 formed on the top cover body 341.

[0058] The top cover body 341 is a rectangular plate with a hollow interior and open sides, which, together with the air outlet bottom cover 31 and the air guide plate assembly 33, forms a gas flow channel. The cold air generated from the bottom cabinet 10 flows into the display cabinet 20 through this gas flow channel.

[0059] The top cover mounting hole 342 is used to install and fix the air outlet top cover 34 on the air guide plate bracket 22. The top cover mounting hole 342 and the second mounting hole 327 are correspondingly provided, and the size of the hole radius of the top cover mounting hole 342 is equal to the size of the hole radius of the second mounting hole 327.

[0060] The air outlet assembly 30 is fixed by screws. Specifically, screws are first passed through the first air guide mounting hole 3312, the second air guide mounting hole 3322, the third air guide mounting hole 3332, and the third mounting hole 328 to fix the first air guide plate 331, the second air guide plate 332, and the third air guide plate 333 to the air guide plate bracket 32. Then, screws are passed through the top cover mounting hole 342 and the second mounting hole 327 to fix the air outlet top cover 34 to the air guide plate bracket 32. Finally, screws are passed through the bottom cover mounting hole 312 and the first mounting hole 326 to fix the air outlet bottom cover 31 to the air guide plate bracket 32. At this point, the air outlet assembly 30 is installed. Compared with traditional welding, this utility model uses screw fixing, which not only reduces the process requirements for workers to assemble, but also facilitates not only the initial assembly and installation but also subsequent maintenance and replacement.

[0061] Compared with existing technologies, the open island cabinet with a novel air outlet structure provided by this utility model uses screws passing through the first air guide mounting hole 3312, the second air guide mounting hole 3322, the third air guide mounting hole 3332, and the third mounting hole 328 to fix the first air guide plate 331, the second air guide plate 332, and the third air guide plate 333 to the air guide plate bracket 32. Screws also pass through the top cover mounting hole 342 and the second mounting hole 327 to fix the air outlet top cover 34 to the air guide plate bracket 32, and screws pass through the bottom cover mounting hole 312 and the first mounting hole 326 to fix the air outlet bottom cover 31 to the air guide plate bracket 32. Compared with traditional welding, fixing the air outlet assembly 30 with screws not only reduces the process requirements for worker assembly, but also facilitates both initial assembly and subsequent maintenance and replacement. Furthermore, the first air guide plate 331, the second air guide plate 332, and the third air guide plate 333 are evenly spaced to distribute the gas flow channel evenly, resulting in a more uniform air volume, better cooling effect, and effectively improving the performance and user experience of the open island cabinet.

[0062] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. An open island cabinet with a novel air outlet structure, characterized in that: The open island cabinet with a novel air outlet structure includes a base cabinet for cooling, a display cabinet connected to the base cabinet, and an air outlet assembly located between the base cabinet and the display cabinet. The air outlet assembly guides and delivers the cooled air from the base cabinet to the display cabinet. The air outlet assembly includes an air outlet base cover connected to the base cabinet, multiple air guide plate supports connected to the air outlet base cover, a set of air guide plate assemblies mounted on the air guide plate supports, and an air outlet top cover connected to the air guide plate supports and positioned opposite the air outlet base cover. The air outlet base cover includes multiple... The bottom cover mounting hole; the air guide plate assembly includes a first air guide plate, a second air guide plate spaced apart from the first air guide plate, and a third air guide plate spaced apart from the second air guide plate; the first, second, and third air guide plates each include multiple first, second, and third air guide mounting holes; the air outlet top cover includes multiple top cover mounting holes; the air guide plate bracket includes multiple first mounting holes corresponding to the bottom cover mounting holes, multiple second mounting holes corresponding to the first, second, and third air guide mounting holes, and multiple third mounting holes corresponding to the top cover mounting holes.

2. The open island cabinet with a novel air outlet structure as described in claim 1, characterized in that: The base cabinet includes a base cabinet body, a refrigeration component located inside the base cabinet body, and a cold air circulation channel opened on the base cabinet body and communicating with the display cabinet.

3. The open island cabinet with a novel air outlet structure as described in claim 2, characterized in that: The refrigeration assembly includes a compressor for powering the refrigeration assembly, a condenser connected to the compressor via piping, and an evaporator connected to the condenser via piping.

4. The open island cabinet with a novel air outlet structure as described in claim 1, characterized in that: The display case includes a display case body and at least one shelf located inside the display case body for accommodating and storing items to be refrigerated for display.

5. The open island cabinet with a novel air outlet structure as described in claim 1, characterized in that: The air outlet cover also includes a cover body and a plurality of insertion slots formed on the cover body and corresponding to the mounting holes of the cover, the insertion slots being used to insert the air guide plate bracket.

6. The open island cabinet with a novel air outlet structure as described in claim 5, characterized in that: The air guide plate bracket also includes a bracket body, a bottom cover bend located on the side of the bracket body facing the bottom air outlet cover, a top cover bend located on the side of the bracket body facing the top air outlet cover, a plurality of air guide abutments spaced apart and located between the bottom cover bend and the top cover bend, and a plurality of air guide mounting slots located between two adjacent air guide abutments. The first mounting hole is opened on the bottom cover bend, the second mounting hole is opened on the top cover bend, and the third mounting hole is opened on the air guide abutment.

7. The open island cabinet with a novel air outlet structure as described in claim 1, characterized in that: The first air guide plate also includes a first air guide plate body and a first insertion protrusion located on the first air guide plate body, and the first air guide mounting hole is formed on the first air guide plate body.

8. The open island cabinet with a novel air outlet structure as described in claim 1, characterized in that: The second air guide plate also includes a second air guide plate body and a second insertion protrusion located on the second air guide plate body, and the second air guide mounting hole is formed on the second air guide plate body.

9. The open island cabinet with a novel air outlet structure as described in claim 6, characterized in that: A third insertion protrusion is located on the body of the third air guide plate, and a plurality of positioning grooves are located on the body of the third air guide plate and are used for inserting the air guide plate to the top. The third air guide mounting hole is opened on the body of the third air guide plate, and the third insertion protrusion fits against the air guide plate bracket.

10. The open island cabinet with a novel air outlet structure as described in claim 1, characterized in that: The air outlet top cover also includes a top cover body, and the top cover mounting holes are opened on the top cover body. The top cover body is a rectangular plate with a hollow interior and open adjacent sides.

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