Power device

Abstract

The utility model discloses a power device which comprises a power box provided with an installation cavity, and the installation cavity is provided with an installation opening, a first connecting opening and a second connecting opening. The volute assembly is provided with a turbine cavity, the volute assembly is installed in the installation cavity, a bottom plate of the volute assembly is connected with the bottom face of the installation cavity, an air inlet aligned with the first connecting opening is formed in the bottom plate, a top plate of the volute assembly is installed at the installation opening, and an air outlet of the volute assembly communicates with the outside through the second connecting opening; the turbine assembly is arranged in the turbine cavity; compared with the prior art, the power device and the volute assembly are provided with the bottom plate, the air inlet is formed in the bottom plate, the edge of the air inlet extends to the edge of the first connecting port of the power box, and when the turbine assembly is started, the air inlet of the bottom plate and the first connecting port of the power box are in negative pressure; the bottom plate is not tightly connected with the bottom surface of the mounting cavity, so that no oil smoke is leaked between the bottom plate and the bottom surface of the mounting cavity, and the process is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to a power device. Background Art

[0002] The power unit can be used as a relay on the range hood to supplement the power for the range hood. The power unit can also be directly connected to the wind box as a power source to form an exhaust device, such as Figure 1 As shown, the existing power device includes a power box (01), a volute (02) and a turbine assembly (03), the volute (02) includes a shroud (021) and a top plate (022), the lower end of the shroud (021) extends inwardly to form a connecting surface (0211), the connecting surface (0211) is welded to the bottom surface of the power box (01), and together with the volute (02) forms a turbine cavity, the turbine assembly (03) is installed in the turbine cavity, and the area of ​​the connecting surface (0211) is much smaller than that of the power box (01). The bottom surface area of ​​the turbine assembly (03) is such that when the turbine assembly (03) is started, the oil smoke will enter the turbine cavity under the action of the turbine assembly (03), and then flow out of the turbine assembly (03) and be thrown to the inner side of the turbine cavity to avoid the oil smoke. That is, the inner wall surface of the enclosure (021), which puts pressure on the enclosure (021). Since the enclosure (021) is welded to the bottom surface of the power box (01), smoke leakage will occur at the weld under the pressure of the airflow, affecting the sealing performance of the power unit and the exhaust effect of the turbine assembly (03). Utility Model Content

[0003] The purpose of this utility model is to provide a power device, which is used to solve the above technical problems.

[0004] A power device for an exhaust device, comprising:

[0005] A power box having a mounting cavity, wherein the mounting cavity has a mounting port, a first connecting port, and a second connecting port;

[0006] A volute assembly having a turbine chamber, the volute assembly being installed in the installation chamber, the bottom plate of the volute assembly being connected to the bottom surface of the installation chamber, the bottom plate being provided with an air inlet aligned with the first connection port, the top plate of the volute assembly being installed at the installation port, and the air outlet of the volute assembly being connected to the outside through the second connection port;

[0007] The turbine assembly is arranged in the turbine chamber.

[0008] According to one embodiment of the present invention, after the lower and upper ends of the enclosure of the volute assembly are respectively connected to the bottom plate and top plate of the volute assembly, the volute assembly is sealed with the connection surfaces of the lower and upper ends of the enclosure with the bottom plate and top plate respectively using an electrophoretic coating process.

[0009] According to one embodiment of the present invention, the lower edge of the enclosure of the volute assembly is provided with a lower flange extending into the turbine chamber, the edge of the lower flange is provided with a lower connecting position, the lower connecting position is provided with a lower connecting hole, and the bottom plate is provided with a lower assembly hole corresponding to the lower connecting hole on the lower connecting position, and the connecting part passes through the lower assembly hole and the lower connecting hole provided on the lower connecting position to connect the lower end of the enclosure with the bottom plate.

[0010] According to one embodiment of the present invention, the upper edge of the enclosure of the volute assembly is provided with an upper flange extending into the turbine chamber, the edge of the upper flange is provided with an upper connecting position, the upper connecting position is provided with an upper connecting hole, and the top plate is provided with an upper assembly hole corresponding to the upper connecting hole on the upper connecting position, and the connecting part passes through the upper assembly hole and the upper connecting hole provided on the upper connecting position to connect the lower end of the enclosure with the top plate.

[0011] According to one embodiment of the present utility model, the shape of the base plate is adapted to the bottom surface of the installation cavity of the power box, a positioning connecting column is provided on the bottom surface of the installation cavity, and a positioning hole corresponding to the positioning connecting column is provided on the base plate. After the volute assembly is installed in the installation cavity, the positioning connecting column is connected to the positioning hole and will limit the volute assembly in the installation cavity.

[0012] According to one embodiment of the present invention, it also includes an air inlet joint, which is connected to a side of the power box where a first connection port is provided. The air inlet joint is provided with a connection surface, and a mounting hole is provided on the connection surface. A connection hole is provided on the positioning connection column, and the mounting hole corresponds one-to-one to the connection hole on the positioning connection column. The connecting piece passes through the mounting hole and the connection hole to fix the air inlet joint to the power box.

[0013] According to one embodiment of the present invention, the air outlet end of the air inlet connector extends upward to have an extended air outlet extending above the connection surface, and the extended air outlet extends into the turbine cavity and is aligned with the air inlet side of the turbine assembly.

[0014] According to one embodiment of the present invention, an air outlet connector is further included, which is connected to the air outlet of the volute assembly and extends out of the installation cavity through the second connecting port.

[0015] According to one embodiment of the present invention, a connecting wall perpendicular to the top plate is extended downward from the edge of the top plate. After the volute assembly is installed in the installation cavity, the connecting wall enters the installation cavity through the installation port and abuts against the inner wall surface of the installation cavity. The connecting piece passes through the wall surface of the installation cavity and the connecting wall to connect the top plate to the power box.

[0016] According to one embodiment of the present invention, hanging holes are provided on two opposite side surfaces of the power box, and the hanging holes on the two side surfaces are symmetrically arranged.

[0017] Compared with the prior art, the power device of the utility model has the following advantages:

[0018] In the power device of the utility model, a volute assembly is provided with a base plate, an air inlet is provided on the base plate, and the edge of the air inlet extends to the edge of the first connecting port of the power box. When the turbine assembly is started, the air inlet of the base plate and the first connecting port of the power box are under negative pressure, so there is no need to force a sealed connection between the base plate and the bottom surface of the installation cavity, and there will be no oil smoke leaking from between the base plate and the bottom surface of the installation cavity, thereby optimizing the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of an existing power plant;

[0020] Figure 2 This is a schematic structural diagram of the power device of the present utility model;

[0021] Figure 3 This is an exploded view of the power device of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the power unit of the present utility model;

[0023] Figure 5 for Figure 4 A magnified view of middle A;

[0024] Figure 6 for Figure 3 Schematic diagram of the structure of the power box;

[0025] Figure 7 for Figure 3 A schematic diagram of the structure of the volute assembly's enclosure;

[0026] In the figure: 1. Power box, 11. Installation cavity, 111. Positioning connection column, 1111. Connection hole, 12. Installation port,

[0027] 13. First connection port, 14. Second connection port, 15. Hanging hole, 2. Volute assembly, 21. Bottom plate, 211. Air inlet, 212. Lower assembly hole, 213. Positioning hole, 22. Top plate, 221. Upper assembly hole, 23. Enclosure, 231. Lower flange, 232. Lower connection position, 2321. Lower connection hole, 233. Upper flange, 234. Upper connection position, 2341. Upper connection hole, 3. Turbine assembly, 4. Air inlet connector, 41. Mounting hole, 42. Extended air outlet, 5. Air outlet connector, 01. Power box, 02. Volute, 021. Enclosure, 0211. Connection surface, 022. Top plate, 03. Turbine assembly.

[0028] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0033] The utility model discloses a power device for an exhaust device, see Figures 2 to 4The power device includes a power box 1, a volute assembly 2 and a turbine assembly 3. The power box 1 has an installation cavity 11, and the installation cavity 11 has an installation port 12, a first connecting port 13 and a second connecting port 14; the volute assembly 2 has a turbine cavity, and the volute assembly 2 is installed in the installation cavity 11. The bottom plate 21 of the volute assembly 2 is connected to the bottom surface of the installation cavity 11, and the bottom plate 21 is provided with an air inlet 211 aligned with the first connecting port 13. The top plate 22 of the volute assembly 2 is installed at the installation port 12, and the air outlet of the volute assembly 2 is connected to the outside through the second connecting port 14; the turbine assembly 3 is arranged in the turbine cavity. In the power device of the present invention, when the turbine assembly 3 is started, a negative pressure is formed in the turbine chamber. Negative pressure is also formed at the first connection port 13 and the air inlet 211. External oil smoke enters the turbine chamber through the first connection port 13 and the air inlet 211 in sequence. Because the negative pressure is formed at the first connection port 13 and the air inlet 211, the oil smoke flows out of the turbine assembly 3 after passing through the first connection port 13 and the air inlet 211. No oil smoke leaks through the gap between the bottom plate 21 and the bottom surface of the mounting chamber 11. This ensures a tight seal between the turbine chamber and the power box 1, without affecting the power of the turbine assembly 3.

[0034] In the power device of the present invention, the volute assembly 2 is provided with a base plate 21, and an air inlet 211 is provided on the base plate 21. The edge of the air inlet 211 extends to the edge of the first connecting port 13 of the power box 1. When the turbine assembly 3 is started, the air inlet 211 of the base plate 21 and the first connecting port 13 of the power box 1 are under negative pressure. There is no need to force the base plate 21 to be sealed with the bottom surface of the installation cavity 11, and there will be no oil smoke leaking from between the base plate 21 and the bottom surface of the installation cavity 11, thereby optimizing the process.

[0035] In the power device of the present invention, after the lower and upper ends of the enclosing plate 23 of the volute assembly 2 are respectively connected to the bottom plate 21 and the top plate 22 of the volute assembly 2, the volute assembly 2 is sealed at the connection surfaces of the lower and upper ends of the enclosing plate 23 with the bottom plate 21 and the top plate 22 respectively using an electrophoretic coating process. After the volute assembly 2 is sprayed using the electrophoretic coating process, a sealing structure is formed at the connection between the lower and upper ends of the enclosing plate 23 and the bottom plate 21 and the top plate 22. After the volute assembly 2 is installed in the installation cavity 11, the fluid between the turbine cavity and the installation cavity 11 is not connected, and the oil smoke entering the turbine cavity does not leak through the connection between the lower and upper ends of the enclosing plate 23 and the bottom plate 21 and the top plate 22.

[0036] The power device of the utility model is first connected with the enclosure plate 23, the bottom plate 21 and the top plate 22 by connecting pieces, and then electrophoresis spraying is performed. Figure 1 Compared with the welding structure, the process is simple and the sealing effect is good.

[0037] See also Figures 4 to 7In the power device of the present invention, the lower edge of the enclosure 23 of the volute assembly 2 is provided with a lower flange 231 extending into the turbine chamber, the edge of the lower flange 231 is provided with a lower connecting position 232, the lower connecting position 232 is provided with a lower connecting hole 2321, the bottom plate 21 is provided with a lower assembly hole 212 corresponding to the lower connecting hole 2321 on the lower connecting position 232, and the connecting piece passes through the lower assembly hole 212 and the lower connecting hole 2321 provided on the lower connecting position 232 to connect the lower end of the enclosure 23 to the bottom plate 21. When the enclosure 23 is connected to the bottom plate 21, the enclosure 23 is fixedly connected to the bottom plate 21 by the connecting piece, so that the enclosure 23 and the bottom plate 21 are firmly connected. Figure 1 Compared with the welding connection in the structure, the process is simple and the sealing effect is good.

[0038] See also Figures 4 to 7 In the power device of the present invention, the upper edge of the enclosure 23 of the volute assembly 2 is provided with an upper flange 233 extending into the turbine chamber, the edge of the upper flange 233 is provided with an upper connecting position 234, the upper connecting position 234 is provided with an upper connecting hole 2341, and the top plate 22 is provided with an upper assembly hole 221 corresponding to the upper connecting hole 2341 on the upper connecting position 234. The connecting piece passes through the upper assembly hole 221 and the upper connecting hole 2341 on the upper connecting position 234 to connect the lower end of the enclosure 23 with the top plate 22. When connecting the enclosure 23 to the top plate 22, the enclosure 23 and the top plate 22 are fixedly connected by connecting parts, so that the enclosure 23 and the top plate 22 can be firmly connected. After the enclosure 23 is connected to the top plate 22 and the bottom plate 21, the volute assembly 2 is formed, and then the assembled volute assembly 2 is sprayed as a whole through the electrophoretic coating process, so that the connection part between the enclosure 23 and the bottom plate 21 and the connection part between the enclosure 23 and the top plate 22 form a sealing structure, which can simplify the process and ensure the sealing effect and the connection strength between the enclosure 23 and the bottom plate 21 and the top plate 22.

[0039] In the power device of the present invention, a lower flange 231 is provided at the lower end of the enclosure 23, and an upper flange 233 is provided at the upper end, which can increase the contact neps between the enclosure 23 and the bottom plate 21 and the top plate 22. After spraying through the electrophoretic coating process, the sealing effect is better.

[0040] In the power device of the present invention, a lower connecting position 232 is provided on the lower flange 231, and a lower connecting hole 2321 is provided on the lower connecting position 232. After the enclosure 23 is connected to the base plate 21, the connecting portion is located in the turbine chamber, and after the lower connecting position 23 and the base plate 21 are connected by a connecting piece, slight deformation of the base plate 21 and / or the lower connecting position 232 will not affect the connection and sealing between the lower flange 231 and the base plate 21.

[0041] Similarly, an upper connecting position 234 is set on the upper flange 233, and an upper connecting hole 2341 is set on the upper connecting position 234. After the enclosure 23 is connected to the top plate 22, the connecting part is located in the turbine chamber, and after the upper connecting position 234 and the top plate 22 are connected by a connecting piece, slight deformation of the top plate 22 and / or the upper connecting position 234 will not affect the connection and sealing between the upper flange 233 and the top plate 22.

[0042] See also Figure 3 and Figure 4 In the power device of the present invention, the shape of the bottom plate 21 is adapted to the bottom surface of the installation cavity 11 of the power box 1. The bottom surface of the installation cavity 11 is provided with a positioning connection column 111, and the bottom plate 21 is provided with a positioning hole 213 corresponding to the positioning connection column 111. After the volute assembly 2 is installed in the installation cavity 11, the positioning connection column 111 is connected with the positioning hole 213 and the volute assembly 2 is limited in position in the installation cavity 11. After the volute assembly 2 is installed in the installation cavity 11 through the installation opening 12, the positioning connection column 111 is inserted into the positioning hole 213, and the volute assembly 2 is limited in position in the installation cavity 11. The volute assembly 2 will not shift in the power box 1, thereby simplifying the installation process of the volute assembly 2 in the power box 1.

[0043] See also Figures 2 to 5 The power device of the present invention also includes an air inlet connector 4, which is connected to the side of the power box 1 provided with the first connection port 13. The air inlet connector 4 is provided with a connection surface, and a mounting hole 41 is provided on the connection surface. A connection hole 1111 is provided on the positioning connection column 111. The mounting hole 41 corresponds one-to-one with the connection hole 1111 on the positioning connection column 111. The connector passes through the mounting hole 41 and the connection hole 1111 to fix the air inlet connector 4 to the power box 1. When the power device is applied to the exhaust device, the air inlet connector 4 is used to connect the air collecting box of the exhaust device. Usually, a smoke exhaust pipe is provided at the air outlet of the air collecting box, and the air outlet end of the smoke exhaust pipe is connected to the air inlet connector 4. When the turbine assembly of the power device is started, the oil smoke enters the air collecting box through the air inlet of the air collecting box, and then enters the air inlet connector 4 along the smoke exhaust pipe, and enters the turbine cavity through the air inlet connector 4. When connecting the air inlet connector 4 to the power box 1, the mounting holes 41 on the connecting surface of the air inlet connector 4 are aligned one-to-one with the connection holes 1111 on the positioning and connecting posts 111 of the power box 1. The air inlet connector 4 and the power box 1 are then connected together using the connector. The placement of the connection holes 1111 on the positioning and connecting posts 111, which have a certain height, increases the depth of the connection holes 1111, ensuring a secure connection between the air inlet connector 4 and the power box 1. Furthermore, the placement of the connection holes 1111 on the positioning and connecting posts 111 reduces the need for drilling holes elsewhere in the power box 1.

[0044] See also Figures 3 to 5In the power unit of the present invention, the outlet end of the air inlet connector 4 extends upward to form an extended air outlet 42 that extends above the connection surface. Extended air outlet 42 extends into the turbine cavity and aligns with the air inlet side of the turbine assembly 3. When the turbine assembly of the power unit is started, oil smoke enters the air collecting box through the air inlet of the air collecting box, then flows along the exhaust duct into the air inlet connector 4, flows along the air outlet connector 4, and is directly transported into the turbine assembly 3 through the extended air outlet 42, thereby improving the turbine assembly 3's ability and efficiency in extracting oil smoke.

[0045] See also Figures 2 to 4 The power device of the present invention also includes an air outlet joint 5, which is connected to the air outlet of the volute assembly 2 and extends out of the installation cavity 11 through the second connection port 14. The air outlet joint 5 is used to connect the power assembly and the public flue. The air outlet joint 5 extends into the installation cavity 11 and is connected to the air outlet of the volute assembly, and then extends out of the installation cavity 11 through the second connection port 14. The air outlet joint 5 is sealed with the volute assembly 2. When the oil smoke in the turbine cavity is discharged by the turbine assembly 3, it enters the air outlet joint 5 and is then discharged into the public flue through the air outlet joint 5. In some cases, an exhaust pipe is connected between the air outlet joint 5 and the public flue, and the oil smoke discharged from the air outlet joint 5 enters the public flue through the exhaust pipe.

[0046] See also Figure 3 and Figure 4 In the power device of the present invention, the edge of the top plate 22 extends downward with a connecting wall perpendicular to the top plate 22. After the volute assembly 2 is installed in the installation cavity 11, the connecting wall enters the installation cavity 11 through the installation opening 12 and abuts against the inner wall surface of the installation cavity 11. The connecting piece passes through the wall surface of the installation cavity 11 and the connecting wall to connect the top plate 22 to the power box 1. After the volute assembly 2 is installed into the installation cavity 11 through the installation opening 12, the top plate 22 just covers the installation opening 12. The connecting wall at the edge of the top plate 22 abuts against the inner wall surface of the installation cavity 11. The connecting piece passes through the portion of the power box 1 that avoids overlapping with the connecting wall and the connecting wall in sequence, and the top plate 22 and the power box 1 are fixedly connected.

[0047] In the power device of the present invention, after the volute assembly 2 is installed in the turbine chamber, the top plate 22 of the volute assembly 2 is just flush with the top of the power box 1 and covers the installation opening 12. The height of the power box 1 only needs to be adapted to the height of the volute assembly 2 to accommodate the volute assembly 2, which can reduce the size of the power box 1 and the overall size of the power device without taking up too much installation space.

[0048] See also Figure 2 、 Figure 3 and Figure 6The power unit of the present invention is provided with mounting holes 15 on two opposite sides of the power box 1. The mounting holes 15 on the two sides are symmetrically arranged. The mounting holes 15 are used to mount the power unit to the location of use. Different users' kitchens have different locations of public flues. By providing mounting holes 15 on two opposite sides of the power box 1, users can select the mounting holes 15 on the corresponding side according to the location of the public flue in the kitchen of each user, making the installation direction of the power unit selective and more adaptable.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power device for an exhaust device, characterized in that: include: A power box (1) having a mounting cavity (11), wherein the mounting cavity (11) has a mounting port (12), a first connecting port (13), and a second connecting port (14); A volute assembly (2) having a turbine chamber, the volute assembly (2) being installed in the installation chamber (11), the bottom plate (21) of the volute assembly (2) being connected to the bottom surface of the installation chamber (11), the bottom plate (21) being provided with an air inlet (211) aligned with the first connection port (13), the top plate (22) of the volute assembly (2) being installed at the installation port (12), and the air outlet of the volute assembly (2) being connected to the outside through the second connection port (14); A turbine assembly (3) is arranged in the turbine chamber.

2. The power device according to claim 1, characterized in that: After the lower end and the upper end of the enclosure (23) of the volute assembly (2) are respectively connected to the bottom plate (21) and the top plate (22) of the volute assembly (2), the volute assembly (2) is sealed at the connection surfaces of the lower end and the upper end of the enclosure (23) with the bottom plate (21) and the top plate (22) using an electrophoretic coating process.

3. The power device according to claim 2, characterized in that: The lower edge of the enclosure (23) of the volute assembly (2) is provided with a lower flange (231) extending into the turbine chamber, the edge of the lower flange (231) is provided with a lower connecting position (232), the lower connecting position (232) is provided with a lower connecting hole (2321), the bottom plate (21) is provided with a lower assembly hole (212) corresponding to the lower connecting hole (2321) on the lower connecting position (232), and a connecting member passes through the lower assembly hole (212) and the lower connecting hole (2321) provided on the lower connecting position (232) to connect the lower end of the enclosure (23) to the bottom plate (21).

4. The power device according to claim 2, characterized in that: The upper edge of the enclosure (23) of the volute assembly (2) is provided with an upper flange (233) extending into the turbine chamber, the edge of the upper flange (233) is provided with an upper connecting position (234), the upper connecting position (234) is provided with an upper connecting hole (2341), the top plate (22) is provided with an upper assembly hole (221) corresponding to the upper connecting hole (2341) on the upper connecting position (234), and a connecting member passes through the upper assembly hole (221) and the upper connecting hole (2341) on the upper connecting position (234) to connect the lower end of the enclosure (23) to the top plate (22).

5. The power device according to claim 1, characterized in that: The shape of the bottom plate (21) is adapted to the bottom surface of the installation cavity (11) of the power box (1); a positioning connection column (111) is provided on the bottom surface of the installation cavity (11); a positioning hole (213) corresponding to the positioning connection column (111) is provided on the bottom plate (21); after the volute assembly (2) is installed in the installation cavity (11), the positioning connection column (111) is connected to the positioning hole (213) and limits the volute assembly (2) in the installation cavity (11).

6. The power plant according to claim 5, characterized in that: The invention also includes an air inlet joint (4), the air inlet joint (4) being connected to a side of the power box (1) provided with the first connection port (13), the air inlet joint (4) being provided with a connection surface, the connection surface being provided with a mounting hole (41), the positioning connection column (111) being provided with a connection hole (1111), the mounting hole (41) being in one-to-one correspondence with the connection hole (1111) on the positioning connection column (111), and a connecting member passing through the mounting hole (41) and the connection hole (1111) to fix the air inlet joint (4) to the power box (1).

7. The power plant according to claim 6, characterized in that: The air outlet end of the air inlet joint (4) extends upward to form an extended air outlet (42) extending above the connection surface. The extended air outlet (42) extends into the turbine cavity and is aligned with the air inlet side of the turbine assembly (3).

8. The power plant according to claim 1, characterized in that: It also includes an air outlet connector (5), which is connected to the air outlet of the volute assembly (2) and extends out of the installation cavity (11) through the second connecting port (14).

9. The power device according to claim 1, characterized in that: The edge of the top plate (22) extends downward to form a connecting wall perpendicular to the top plate (22); after the volute assembly (2) is installed in the installation cavity (11), the connecting wall enters the installation cavity (11) through the installation opening (12) and abuts against the inner wall surface of the installation cavity (11); a connecting piece passes through the wall surface of the installation cavity (11) and the connecting wall to connect the top plate (22) to the power box (1).

10. The power plant according to claim 1, characterized in that: The power box (1) is provided with hanging holes (15) on two oppositely arranged side surfaces, and the hanging holes (15) on the two side surfaces are symmetrically arranged.

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