Breathing machine

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a breathing machine. The breathing machine comprises a shell and an auxiliary assembly, the auxiliary assembly comprises a fixing box and a main board, a containing groove with an opening in one side is formed in the shell, and the fixing box is inserted into the containing groove and detachably connected with the shell; the fixing box comprises a box body and a cover plate, the box body is provided with an inner cavity with an opening in one side, the main plate is installed in the inner cavity, the cover plate detachably covers the opening of the inner cavity, and the outer edge of the main plate abuts against the fixing box; a first limiting structure and a second limiting structure are arranged in the fixing box, the first limiting structure abuts against one side of the main board in the thickness direction, and the second limiting structure abuts against the other side of the main board in the thickness direction. When the mainboard needs to be replaced, only the fixing box needs to be detached from the shell, the box body and the cover plate need to be detached, operation is convenient, a user can replace and upgrade the mainboard conveniently, and the experience feeling of the user is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a ventilator. Background Art

[0002] Positive airway pressure ventilator is a type of ventilator. It is mainly used to treat sleep apnea (OSA), snoring, obstructive sleep apnea, central sleep apnea, hypoventilation and other related diseases. It can treat the decrease in blood oxygen saturation caused by sleep apnea, restore blood oxygen saturation, reduce the sleep apnea-hypopnea index, eliminate tongue suffix and breathing disorders.

[0003] The ventilator is equipped with auxiliary components, including a main board, on which a data transmission module and a data analysis module can be set. The main board cooperates with the data module in the main unit of the ventilator to realize the analysis, processing and transmission of specific types of data. The patient's relatives have corresponding terminal software installed on their mobile phones or computers. The auxiliary components remotely transmit the breathing parameters to the mobile phones or computers of the patient's relatives, so that relatives who are not around can better understand the patient's physical condition.

[0004] However, the auxiliary components in existing ventilators are non-detachable, which makes it impossible for consumers to install and upgrade the auxiliary components by themselves, thus reducing the user experience. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to provide a ventilator for the problem that consumers are unable to install and upgrade auxiliary components by themselves in the existing ventilators.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a ventilator, including a housing and an auxiliary component, the auxiliary component includes a fixing box and a main board, the housing is provided with a receiving groove with one side open, the fixing box is inserted into the receiving groove and is detachably connected to the housing;

[0007] The fixing box comprises a box body and a cover plate, the box body has an inner cavity with an opening on one side, the main board is installed in the inner cavity, the cover plate is detachably covered at the opening of the inner cavity, and the outer edge of the main board is against the fixing box;

[0008] A first limiting structure and a second limiting structure are disposed in the fixing box. The first limiting structure abuts against one side of the mainboard in the thickness direction, and the second limiting structure abuts against the other side of the mainboard in the thickness direction.

[0009] Optionally, the opening direction of the inner cavity is perpendicular to the main board, the first limiting structure is arranged on the box body, and the second limiting structure is arranged on a side of the cover plate facing the main board.

[0010] Optionally, a limiting protrusion protruding toward the main board is formed on the bottom wall of the box body facing the main board, and the limiting protrusion constitutes the first limiting structure;

[0011] A limit frame extending toward the main board is formed on the cover plate corresponding to the outer edge of the main board, and the limit frame constitutes the second limit structure. The limit frame can extend into the inner cavity of the box body to abut against the main board when the cover plate is closed on the box body.

[0012] Optionally, the limiting protrusion is in a truncated cone shape, and a center line of the limiting protrusion is perpendicular to the main board.

[0013] Optionally, at least one snap-fitting structure is provided between the limit frame and the box body, and the snap-fitting structure includes a snap-fitting slot and a snap-fitting hook. The snap-fitting hook is formed on one of the limit frame and the box body, and the snap-fitting slot is formed on the other. The snap-fitting hook can be snapped into the snap-fitting slot when the cover plate is closed on the box body.

[0014] Optionally, a first threaded fastener is further included, the cover plate is provided with a first connection hole penetrating through both side surfaces thereof in the thickness direction, the first connection hole is located outside the limit frame, a connection column is provided in the inner cavity of the box body, a first internal threaded hole is provided on the connection column, and one end of the first threaded fastener passes through the first connection hole and is threadedly connected to the first internal threaded hole;

[0015] Only one clamping structure is provided, and the first connecting hole and the clamping structure are located at opposite ends of the cover plate.

[0016] Optionally, the box body includes a bottom plate, a first side plate, a second side plate, a third side plate and a fourth side plate, the bottom plate is square, the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially arranged around the four sides of the bottom plate and connected end to end to enclose an inner cavity of the box body; the third side plate is connected to the outer shell and is detachably connected to the outer shell.

[0017] Optionally, the outer peripheral edge of the third side plate extends in all directions to form a positioning edge, and the positioning edge is stop-matched with the outer shell along the insertion direction of the fixing box.

[0018] Optionally, the opening of the receiving groove faces the bottom of the shell, the third side plate includes an arc plate and a fixed handle, the arc plate is connected to the bottom plate, the second side plate and the fourth side plate, so as to enclose the first side plate to form an inner cavity of the box body; the fixed handle is connected to a side of the arc plate away from the bottom plate, and the fixed handle is detachably connected to the shell;

[0019] A support platform is arranged on one side of the box body close to the arc-shaped plate, and the support platform has a support surface extending in a horizontal direction and supporting the main board.

[0020] Optionally, a second threaded fastener is further included, the fixing handle is provided with a second connecting hole extending along the insertion direction of the fixing box, the outer shell is provided with a corresponding second internal threaded hole, and one end of the second threaded fastener passes through the second connecting hole and is threadedly connected to the second internal threaded hole.

[0021] In the ventilator of the utility model, the mainboard is installed in the inner cavity of the box body of the fixed box, the cover plate is closed at the opening of the inner cavity, the outer edge of the mainboard is against the fixed box, and the first limiting structure and the second limiting structure in the fixed box are respectively against the two side surfaces of the mainboard in the thickness direction, so that the mainboard is limited and fixed in the fixed box. The box body of the fixed box is detachably connected to the cover plate, and the fixed box is detachably connected to the outer shell. Therefore, when the mainboard needs to be replaced, it is only necessary to remove the fixed box from the outer shell, and remove the box body and the cover plate. The operation is convenient, which is convenient for users to replace and upgrade the mainboard and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a ventilator provided by an embodiment of the utility model;

[0023] Figure 2 yes Figure 1 Transverse cross-section of

[0024] Figure 3 yes Figure 1 A schematic diagram of the structure of the auxiliary components;

[0025] Figure 4 yes Figure 3 Exploded diagram of

[0026] Figure 5 yes Figure 4 Schematic diagram from another perspective.

[0027] The reference numerals in the specification are as follows:

[0028] 1. Shell; 2. Fixed box; 21. Box body; 22. Cover plate; 23. Limit frame; 231. Hook; 24. Slot; 25. Inner cavity; 26. Limit protrusion; 27. Connecting column; 28. Support platform; 29. ​​Third side panel; 291. Arc plate; 292. Fixed handle; 293. Positioning edge; 3. Main board; 4. First threaded fastener; 5. Second threaded fastener. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a ventilator, including a shell 1 and an auxiliary component, the auxiliary component includes a fixing box 2 and a main board 3, the shell 1 is provided with a receiving groove with one side opening, the fixing box 2 is inserted into the receiving groove and is detachably connected to the shell 1.

[0031] like Figure 3 and Figure 4 As shown, the fixed box 2 includes a box body 21 and a cover plate 22. The box body 21 has an inner cavity 25 with an opening on one side. The main board 3 is installed in the inner cavity 25. The cover plate 22 is detachably covered at the opening of the box body 21. The outer edge of the main board 3 is against the fixed box 2, so that the fixed box 2 fixes the main board 3 by limiting the outer edge of the main board 3.

[0032] A first limiting structure and a second limiting structure are provided in the fixing box 2. The first limiting structure abuts against one side of the main board 3 in the thickness direction, and the second limiting structure abuts against the other side of the main board 3 in the thickness direction, so as to limit the main board 3 from both sides in the thickness direction of the main board 3, so that the main board 3 can remain stationary in the fixing box 2.

[0033] When it is necessary to upgrade and replace the mainboard 3, remove the fixing box 2 from the receiving slot of the outer shell 1, then remove the box body 21 and the cover plate 22, take out the old mainboard 3 from the inner cavity 25 of the box body 21, and place the new mainboard 3 in the inner cavity 25 of the box body 21. Finally, after closing the cover plate 22 on the box body 21, install the fixing box 2 into the receiving slot of the outer shell 1.

[0034] The fixing box 2 separates the mainboard 3 from other parts in the ventilator to protect the mainboard 3 and prevent collision between the mainboard 3 and other parts. In addition, the fixing box 2 limits the mainboard 3, and no connection structure is provided between the fixing box 2 and the mainboard 3, so that the mainboard 3 can be easily replaced.

[0035] The main board 3 is connected to the host of the ventilator for communication. The main board 3 can cooperate with the data module in the host to realize some specific functions, including analysis, processing and transmission of specific types of data. For the host of the same ventilator, a main board 3 with different functional modules can be selected to add different functional modules to the ventilator to meet the needs of different users.

[0036] The main board 3 may be provided with a data transmission module connected to the host for communication, a data analysis module connected to the host for communication, or a data acquisition module connected to the host for communication.

[0037] The data transmission module may include one or more of 2G, 3G, 4G, 5G data transmission modules, Bluetooth transmission modules, Wifi modules, infrared transmission modules, etc. The data transmission module may receive data from the host and transmit it to an external device for reference by doctors or users.

[0038] There can be multiple data analysis modules, such as blood oxygen information analysis, respiratory data analysis, etc. The data analysis module can analyze the information from the host and then transmit the analysis and processing results to the outside.

[0039] The data acquisition module includes blood oxygen information acquisition, heart data acquisition, or respiratory data acquisition that cannot be acquired by the host, etc. The data acquisition module can send the acquired data to the host for analysis and processing by the host, or directly analyze it through the data analysis module on the main board 3, or transmit it to an external device through the data transmission module on the main board 3.

[0040] In the ventilator of the present utility model, the mainboard 3 is installed in the inner cavity 25 of the box body 21 of the fixed box 2, the cover plate 22 covers the opening of the inner cavity 25, the outer edge of the mainboard 3 abuts on the fixed box 2, and the first limiting structure and the second limiting structure in the fixed box 2 abut on the two side surfaces of the mainboard 3 in the thickness direction, so that the mainboard 3 is limited and fixed in the fixed box 2. The box body 21 of the fixed box 2 is detachably connected to the cover plate 22, and the fixed box 2 is detachably connected to the outer shell 1. Therefore, when the mainboard 3 needs to be replaced, it is only necessary to remove the fixed box 2 from the outer shell 1, and remove the box body 21 and the cover plate 22. The operation is convenient, which is convenient for users to replace and upgrade the mainboard 3 and improve the user experience.

[0041] In one embodiment, if Figure 3 and Figure 4 As shown, the opening direction of the inner cavity 25 is perpendicular to the main board 3, the first limiting structure is arranged on the box body 21, and the second limiting structure is arranged on the side of the cover plate 22 facing the main board 3. When the main board 3 is placed in the inner cavity 25, since the cover plate 22 is not covered on the box body 21, the main board 3 is not restricted by the second limiting structure, which facilitates the placement of the main board 3 in the inner cavity 25, and reduces the collision of the main board 3 with the first limiting structure and the second limiting structure when the main board 3 is placed in the inner cavity 25.

[0042] In one embodiment, if Figure 4 As shown, a limiting protrusion 26 protruding toward the main board 3 is formed on the bottom wall of the box body 21 facing the main board 3, and the limiting protrusion 26 constitutes a first limiting structure.

[0043] like Figure 5As shown, a limit frame 23 extending toward the main board 3 is formed on the cover plate 22 at the outer edge corresponding to the main board 3, and the limit frame 23 constitutes a second limit structure. The limit frame 23 can extend into the inner cavity 25 of the box body 21 to abut against the main board 3 when the cover plate 22 is closed on the box body 21.

[0044] In one embodiment, the limiting protrusion 26 is in the shape of a truncated cone, and the center line of the limiting protrusion 26 is perpendicular to the main board 3, so as to increase the contact area between the limiting protrusion 26 and the main board 3 while reducing the edges and corners on the limiting protrusion 26, so as to avoid the edges and corners on the limiting protrusion 26 damaging the components on the main board 3 when the main board 3 is installed in the inner cavity 25 of the box body 21.

[0045] In one embodiment, a plurality of limiting protrusions 26 are provided, and the plurality of limiting protrusions 26 are distributed corresponding to the middle and four corners of the mainboard 3 .

[0046] In one embodiment, at least one snap-fit ​​structure is provided between the limit frame 23 and the box body 21, and the snap-fit ​​structure includes a snap-fit ​​groove 24 and a snap-fit ​​hook 231. The snap-fit ​​hook 231 is formed on one of the limit frame 23 and the box body 21, and the snap-fit ​​groove 24 is formed on the other. The snap-fit ​​hook 231 can be snapped into the snap-fit ​​groove 24 when the cover plate 22 is covered on the box body 21, so that the cover plate 22 can be detachably covered on the box body 21. The limit frame 23 and the box body 21 are snap-fitted, and no connector is required, which is convenient for disassembly and assembly.

[0047] In one embodiment, if Figure 5 As shown, the hook 231 is located in the middle of the frame of the limit frame 23, and the frame portion where the hook 231 is located is separated from the frame portions on the adjacent two sides, so that the frame portion where the hook 231 is located forms an elastic arm with a certain elasticity. When the limit frame 23 gradually extends into the box body 21, the side wall of the box body 21 presses the hook 231, and the elastic arm elastically deforms until the hook 231 moves to the slot 24, and the elastic arm recovers the deformation, so that the hook 231 is stuck in the slot 24. The hook 231 elastically contacts the side wall of the box body 21 to reduce the acting force between the hook 231 and the box body 21, thereby reducing the friction between the hook 231 and the box body 21, and facilitating the limit frame 23 to extend into the box body 21.

[0048] In one embodiment, a first threaded fastener 4 is further included. The cover plate 22 is provided with first connection holes penetrating through both side surfaces in the thickness direction thereof. The first connection holes are located outside the limiting frame 23 .

[0049] A connecting column 27 is disposed in the inner cavity 25 of the box body 21 . A first internal threaded hole is disposed on the connecting column 27 . One end of the first threaded fastener 4 passes through the first connecting hole and is threadedly connected to the first internal threaded hole.

[0050] Only one of the clamping structures is provided, and the first connecting hole and the clamping structure are located at opposite ends of the cover plate 22. One end of the cover plate 22 is clamped and fixed to the box body 21 through a limiting frame 23, and the other end of the cover plate 22 is connected to the box body 21 through a first threaded fastener 4. Compared with the limiting frame 23 only being clamped and matched with the box body 21 through the clamping structure, the connection through the first threaded fastener 4 can prevent the cover plate 22 from falling out of the box body 21 when the fixed box 2 is subjected to a large external force.

[0051] In one embodiment, the hook 231 is formed on the frame at the top of the limit frame 23, and the slot 24 is formed on the side wall at the top of the box body 21. Compared with forming the slot 24 on the limit frame 23, the hook 231 formed on the limit frame 23 is beneficial to ensuring the structural strength of the limit frame 23.

[0052] In other embodiments, the locking slot 24 may be formed on the limiting frame 23 , and the locking hook 231 may be formed on the box body 21 .

[0053] In one embodiment, the box body 21 includes a bottom plate, a first side plate, a second side plate, a third side plate 29 and a fourth side plate, the bottom plate is square, the first side plate, the second side plate, the third side plate 29 and the fourth side plate are sequentially arranged around the bottom plate and connected end to end to enclose and form an inner cavity 25 of the box body 21, and the third side plate 29 is connected to the outer shell 1 and is detachably connected to the outer shell 1. The square inner cavity 25 is formed by enclosing the first side plate, the second side plate, the third side plate 29 and the fourth side plate with the square bottom plate, so that when the square main board 3 is placed in the inner cavity 25, the outer edge of the main board 3 can be against the corresponding side plate, and the contact area between the outer edge of the main board 3 and the corresponding side plate is large, which is conducive to improving the firmness of the main board 3 in the fixing box 2.

[0054] In one embodiment, the outer peripheral edge of the third side plate 29 extends in all directions to form a positioning edge 293, and the positioning edge 293 cooperates with the outer shell 1 along the insertion direction of the fixing box 2, so that when the fixing box 2 is installed into the receiving groove, the positioning edge 293 can cooperate with the outer shell 1 to ensure that the fixing box 2 is installed in place.

[0055] In one embodiment, the opening of the receiving groove faces the bottom of the housing 1 to prevent the fixing box 2 from being exposed to the outside and affecting the aesthetics of the ventilator. However, the shape of the bottom of the housing 1 is relatively complex, with an arc shape and steps. To ensure that the aesthetics of the overall appearance of the ventilator are not affected after the fixing box 2 is inserted into the receiving groove, the third side plate 29 includes an arc plate 291 and a fixed handle 292. The shape of the arc plate 291 is the same as that of the housing 1, and the fixed handle 292 is the same as the step shape at the bottom of the housing 1.

[0056] The arc plate 291 is connected to the bottom plate, the second side plate and the fourth side plate to enclose the first side plate to form the inner cavity 25 of the box body 21. The fixed handle 292 is connected to the side of the arc plate 291 away from the bottom plate, and the fixed handle 292 is detachably connected to the housing 1.

[0057] A support platform 28 is provided on one side of the box body 21 close to the arc plate 291 . The support platform 28 has a support surface extending in a horizontal direction and supporting the main board 3 , so as to solve the problem that the arc plate 291 cannot support the main board 3 well.

[0058] In one embodiment, it also includes a second threaded fastener 5, a second connecting hole extending along the insertion direction of the fixing box 2 is provided on the fixing handle 292, a corresponding second internal threaded hole is provided on the outer shell 1, and one end of the second threaded fastener 5 passes through the second connecting hole and is threadedly connected to the second internal threaded hole.

[0059] In other embodiments, the opening direction of the inner cavity 25 may be parallel to the main board 3. In this case, the first limiting structure and the second limiting structure are respectively arranged on the two side surfaces of the box body 21 corresponding to the board surface of the main board 3. When installing the main board 3, the main board 3 is first inserted between the first limiting structure and the second limiting structure, and then the cover plate 22 is covered on the box body 21, so that the outer edge of the main board 3 is against the cover plate 22 and the box body 21.

[0060] In other embodiments, the first limiting structure may be formed on a side wall of the box body 21 adjacent to the opening side.

[0061] In other embodiments, the limiting protrusion 26 may be in the shape of a hemisphere, a square, or a frustum.

[0062] In other embodiments, the clamping structure may be omitted, and the cover plate 22 and the box body 21 may be connected only by screws.

[0063] First connection holes may be provided at opposite ends of the cover plate 22 , so that opposite ends of the cover plate 22 are connected to the box body 21 through the first threaded fasteners 4 .

[0064] In other embodiments, multiple snap-fit ​​structures may be provided. For example, snap hooks 231 may be formed on the two opposite side frames of the limit frame 23, and snap grooves 24 may be formed on the corresponding two side walls of the box body 21, so that the limit frame 23 and the box body 21 are only snap-fitted.

[0065] In other embodiments, the box body 21 may be cylindrical, hexagonal or polygonal.

[0066] In other embodiments, the opening of the accommodating groove can be toward the side of the shell 1, the third side panel 29 has the same shape as the position where the accommodating groove is set on the shell 1, and the shape of the side wall of the shell 1 is relatively regular. At this time, the third side panel 29 may be a flat plate or an arc-shaped plate 291, and the fixed handle 292 can be cancelled.

[0067] In other embodiments, the third side panel 29 can be snap-fastened to the outer shell 1, a snap-fastening protrusion can be provided on the third side panel 29, and a corresponding snap-fastening groove can be provided on the outer shell 1. When the fixing box 2 is inserted into the accommodating groove, the snap-fastening protrusion is snap-fastened in the snap-fastening groove to removably fix the fixing box 2 to the outer shell 1. The snap-fastening structure is a commonly used method in the mechanical field and will not be described in detail here.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ventilator, characterized in that: The invention comprises a housing (1) and an auxiliary component, wherein the auxiliary component comprises a fixing box (2) and a main board (3), the housing (1) is provided with a receiving groove with an opening on one side, the fixing box (2) is inserted into the receiving groove and is detachably connected to the housing (1); The fixing box (2) comprises a box body (21) and a cover plate (22); the box body (21) has an inner cavity (25) with an opening on one side; the main board (3) is installed in the inner cavity (25); the cover plate (22) is detachably covered at the opening of the inner cavity (25); and the outer edge of the main board (3) abuts against the fixing box (2); A first limiting structure and a second limiting structure are arranged in the fixing box (2), wherein the first limiting structure abuts against one side of the main board (3) in the thickness direction, and the second limiting structure abuts against the other side of the main board (3) in the thickness direction.

2. The ventilator according to claim 1, characterized in that: The opening direction of the inner cavity (25) is perpendicular to the main board (3); the first limiting structure is arranged on the box body (21); and the second limiting structure is arranged on a side of the cover plate (22) facing the main board (3).

3. The ventilator according to claim 2, characterized in that: A limiting protrusion (26) is formed on the bottom wall of the box body (21) facing the main board (3), and the limiting protrusion (26) protrudes toward the main board (3), and the limiting protrusion (26) constitutes the first limiting structure; A limiting frame (23) extending in the direction of the main board (3) is formed on the cover plate (22) at an outer edge corresponding to the main board (3); the limiting frame (23) constitutes the second limiting structure; and the limiting frame (23) can extend into the inner cavity (25) of the box body (21) to abut against the main board (3) when the cover plate (22) is covered on the box body (21).

4. The ventilator according to claim 3, characterized in that: The limiting protrusion (26) is in the shape of a truncated cone, and the center line of the limiting protrusion (26) is perpendicular to the main board (3).

5. The ventilator according to claim 3, characterized in that: At least one snap-fitting structure is provided between the limit frame (23) and the box body (21), and the snap-fitting structure comprises a snap-fitting slot (24) and a snap-fitting hook (231). The snap-fitting hook (231) is formed on one of the limit frame (23) and the box body (21), and the snap-fitting slot (24) is formed on the other. The snap-fitting hook (231) can be snapped into the snap-fitting slot (24) when the cover plate (22) is covered on the box body (21).

6. The ventilator according to claim 5, characterized in that: The box body (21) further comprises a first threaded fastener (4), the cover plate (22) being provided with a first connection hole penetrating through both side surfaces thereof in the thickness direction, the first connection hole being located outside the limit frame (23), a connection column (27) being provided in the inner cavity (25) of the box body (21), the connection column (27) being provided with a first internal threaded hole, one end of the first threaded fastener (4) passing through the first connection hole and being threadedly connected to the first internal threaded hole; Only one clamping structure is provided, and the first connecting hole and the clamping structure are located at opposite ends of the cover plate (22).

7. A ventilator according to any one of claims 1 to 6, characterized in that: The box body (21) comprises a bottom plate, a first side plate, a second side plate, a third side plate (29) and a fourth side plate; the bottom plate is square; the first side plate, the second side plate, the third side plate (29) and the fourth side plate are sequentially arranged around the bottom plate and connected end to end to enclose an inner cavity (25) of the box body (21); the third side plate (29) is connected to the outer shell (1) and is detachably connected to the outer shell (1).

8. The ventilator according to claim 7, characterized in that: The outer peripheral edge of the third side plate (29) extends in all directions to form a positioning edge (293), and the positioning edge (293) is engaged with the outer shell (1) in a blocking manner along the insertion direction of the fixing box (2).

9. The ventilator according to claim 7, characterized in that: The opening of the receiving groove faces the bottom of the shell (1); the third side plate (29) comprises an arc-shaped plate (291) and a fixed handle (292); the arc-shaped plate (291) is connected to the bottom plate, the second side plate and the fourth side plate, so as to enclose the first side plate to form an inner cavity (25) of the box body (21); the fixed handle (292) is connected to a side of the arc-shaped plate (291) away from the bottom plate, and the fixed handle (292) is detachably connected to the shell (1); A support platform (28) is provided on one side of the box body (21) close to the arc-shaped plate (291), and the support platform (28) has a support surface extending in a horizontal direction and supporting the main board (3).

10. The ventilator according to claim 9, characterized in that: It also includes a second threaded fastener (5), the fixing handle (292) is provided with a second connecting hole extending along the insertion direction of the fixing box (2), the outer shell (1) is provided with a corresponding second internal threaded hole, and one end of the second threaded fastener (5) passes through the second connecting hole and is threadedly connected to the second internal threaded hole.

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