Fire-fighting smoke exhaust fan

Abstract

The utility model discloses a fire-fighting smoke exhaust fan, including fan, capping, fan includes shell, impeller, and impeller is located in the shell, and impeller can rotate, and capping is installed in the end of fan, and capping includes cover and rotator, and cover is hinged with shell, and rotator is rotatably installed in cover, and rotator is located in the side of cover towards impeller, and cover includes first state and second state, and cover closes the end of shell under first state, and rotator is locked with shell, and rotator is rotationally limited with impeller, and impeller drives rotator to rotate under second state, and rotator is separated from shell, and the utility model discloses through capping and close the end opening of fan under normal state, when fan starts, and impeller rotates and drives capping to separate from the end of shell, and capping can protect fan under normal state, and automatically opens when fan starts.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and more specifically, to a fire-fighting smoke exhaust fan. Background Technology

[0002] In existing technologies, dedicated fire-fighting smoke exhaust fans are generally in a closed state under normal circumstances. Since one end of the fire-fighting smoke exhaust fan must be located on the outside of the wall, and the fan port needs to be kept open to expel smoke in time during a fire, the fan is not usually started and is generally installed at a high position. This makes it easy for dust, leaves, debris, and even birds to nest in the open fan port, which can hinder the fan from starting or even damage the fan impeller. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art, protect the fan under normal conditions, and automatically start the fan when it starts, thus providing a fire-fighting smoke exhaust fan.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a fire-fighting smoke exhaust fan, including a fan and a cover. The fan includes a housing and an impeller. The impeller is located inside the housing and is rotatable. The cover is installed at the end of the fan and includes a cover plate and a rotating component. The cover plate is hinged to the housing, and the rotating component is rotatably installed on the cover plate. The rotating component is located on the side of the cover plate facing the impeller. The cover plate has a first state and a second state. In the first state, the cover plate closes the end of the housing, the rotating component is locked to the housing, and the rotating component is rotatably limited by the impeller. In the second state, the impeller drives the rotating component to rotate, and the rotating component disengages from the housing.

[0006] Furthermore, the impeller includes an end block located on the side of the impeller facing the cover plate, the end block having a socket, and the rotating member having a plug corresponding to the socket.

[0007] Furthermore, a telescopic push rod is installed at the center of the end block, the push rod extending at least partially out of the end block, and in the first state, the push rod presses against the rotating member.

[0008] Furthermore, the inner wall of the outer casing is provided with a locking rod, the rotating component includes a connecting rod, and a buckle is installed at the end of the connecting rod away from the center of the rotating component, the buckle and the locking rod can be correspondingly engaged.

[0009] Furthermore, the locking rod extends radially along the outer casing, and the latch is provided with a limiting opening that faces the rotation direction of the rotating component. In the first state, the locking rod is located within the limiting opening.

[0010] Furthermore, the cover plate is provided with a mounting plate, which is connected to the connecting rod by a spring. The two ends of the spring are respectively fixed to the mounting plate and the connecting rod, and the mounting plate is located on the back side in the direction of the opening of the limiting port.

[0011] Furthermore, the latch has a rounded corner, which is located at the edge between the side of the latch with the limiting opening and the end face of the latch facing the locking rod, and the locking rod is a cylindrical rod.

[0012] Furthermore, the connection between the cover plate and the outer shell is located below the end face of the outer shell, and there are two locking rods, two connecting rods, and two locking rods are symmetrically arranged on the outer shell.

[0013] The beneficial effects of this utility model are:

[0014] This invention seals the end opening of the fan under normal conditions. When the fan starts, the impeller rotates and drives the seal to detach from the end of the outer casing. The seal can seal the end of the fan under normal conditions to prevent debris from entering the fan and thus protect it. When the fan starts, the impeller drives the rotating parts to rotate, causing the latch and locking rod to disengage, and the top cover opens the seal, so that the air outlet end of the fan opens automatically. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment.

[0016] Figure 2 This is a top view of the cover in this embodiment.

[0017] Figure 3 This is a cross-sectional view of this embodiment.

[0018] Figure 4 This is a schematic diagram of one type of latch in this embodiment.

[0019] Reference numerals: 1. Fan; 11. Casing; 111. Locking rod; 12. Impeller; 121. End block; 1211. Insert; 122. Top rod; 2. Cover; 21. Cover plate; 211. Mounting plate; 22. Rotating component; 221. Connecting rod; 222. Lock; 223. Insert block; 2221. Limiting port; 2222. Rounded corner; 23. Spring. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-4 As shown, this embodiment discloses a fire-fighting smoke exhaust fan, including a fan 1 and a cover 2. The fan 1 includes a housing 11 and an impeller 12. The impeller 12 is located inside the housing 11 and can rotate. The impeller 12 is located at one end of the fan 1 near the exhaust port. The cover 2 is installed at the end of the exhaust port of the fan 1. The cover 2 includes a cover plate 21 and a rotating part 22. The cover plate 21 is hinged to the housing 11. The connection between the cover plate 21 and the housing 11 is located below the end face of the exhaust port of the housing 11. When the cover plate 21 is opened, it can automatically flip downward under gravity without interfering with the air output of the fan 1.

[0022] The rotating component 22 is rotatably mounted on the cover plate 21. The rotating component 22 is located on the side of the cover plate 21 facing the impeller 12. The rotating component 22 includes two connecting rods 221 extending to the left and right sides. A latch 222 is installed at the end of each connecting rod 221 away from the center of the rotating component 22. Two locking rods 111 are provided on the inner side wall of the outer shell 11. The two locking rods 111 are symmetrically arranged on the outer shell 11. When the cover 2 rotates to close the end of the outer shell 11, the latch 222 engages with the corresponding locking rod 111.

[0023] The cover plate 21 is provided with a mounting plate 211. The mounting plate 211 is connected to the connecting rod 221 by a spring 23. The two ends of the spring 23 are respectively fixed to the mounting plate 211 and the connecting rod 221. The mounting plate 211 is located on the back side of the opening direction of the limiting port 2221. The rotating part 22 is supported by the spring 23 connected to the mounting plate 211, so that the rotating part 22 remains stable under normal conditions. When the locking rod 111 is engaged with the locking buckle 222, the rotating part 22 is locked to prevent the locking rod 111 from accidentally disengaging from the locking buckle 222.

[0024] The locking rod 111 is a cylindrical rod that extends radially along the outer casing 11, meaning it extends horizontally. The latch 222 has a limiting port 2221 with two openings facing opposite directions, one upwards and the other downwards. The limiting ports 2221 face the rotation direction of the rotating component 22, allowing the two latches 222 to simultaneously engage or disengage with the corresponding locking rod 111 when the rotating component 22 rotates. The latch 222 has... The arc angle 2222 is located at the edge between the side of the latch 222 with the limiting opening 2221 and the end face of the latch 222 facing the locking rod 111. When the cover 2 covers the end of the outer shell 11, the side wall of the cylindrical locking rod 111 can abut against the arc angle 2222. The rotating part 22 rotates due to the pressure, and the connecting rod 221 overcomes the pressure of the spring 23, so that the locking rod 111 is inserted into the limiting opening 2221 along the arc angle 2222.

[0025] The impeller 12 includes an end block 121, which is located on the side of the impeller 12 facing the cover plate 21. The end block 121 has a socket 1211, and the rotating component 22 has a plug 223 corresponding to the socket 1211. When the cover 2 covers the end of the fan 1, the plug 223 is inserted into the socket 1211, so that the impeller 12 can drive the rotating component 22 to rotate when it rotates. A telescopic push rod 122 is installed at the center of the end block 121, and the push rod 122 extends at least partially out of the end block 121. The inner side of the push rod 122 is provided with a spring support, which can always apply an outward pushing force to the push rod 122. When the cover 2 covers the end of the fan 1, the push rod 122 is pressed by the rotating part 22, and the spring on the inner side of the push rod 122 is compressed and deformed. When the impeller 12 drives the rotating part 22 to rotate and disengage the limiting port 2221 and the locking rod 111, the push rod 122 pushes outward and generates a pushing force on the cover 2, so that the cover 2 leaves the end of the fan 1. When the fan 1 starts, the cover 2 can be opened directly.

[0026] The cover plate 21 includes a first state and a second state. The first state is when the cover 2 seals the end of the fan 1. In the first state, the cover plate 21 closes the end of the outer shell 11, the locking rod 111 is located in the limiting port 2221, the rotating part 22 is locked with the outer shell 11, and the push rod 122 pushes against the rotating part 22, limiting the rotation of the rotating part 22 and the impeller 12. The second state is when the impeller 12 has just started. The speed of the impeller 12 when it starts is not fast. In the second state, the impeller 12 drives the rotating part 22 to rotate, causing the limiting port 2221 and the locking rod 111 to disengage, the rotating part 22 to disengage from the outer shell 11, and the compressed push rod 122 pushes open the cover 2.

[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fire-fighting smoke exhaust fan, characterized in that, The device includes a fan (1) and a cover (2). The fan (1) includes a housing (11) and an impeller (12). The impeller (12) is located inside the housing (11) and is rotatable. The cover (2) is installed at the end of the fan (1). The cover (2) includes a cover plate (21) and a rotating component (22). The cover plate (21) is hinged to the housing (11). The rotating component (22) is rotatably mounted on the cover plate (21). 2) Located on the side of the cover plate (21) facing the impeller (12), the cover plate (21) includes a first state and a second state. In the first state, the cover plate (21) closes the end of the outer shell (11), the rotating member (22) is locked with the outer shell (11), and the rotating member (22) is rotated and limited by the impeller (12). In the second state, the impeller (12) drives the rotating member (22) to rotate, and the rotating member (22) disengages from the outer shell (11).

2. The fire-fighting smoke exhaust fan according to claim 1, characterized in that, The impeller (12) includes an end block (121), which is located on the side of the impeller (12) facing the cover plate (21). The end block (121) is provided with a socket (1211), and the rotating member (22) is provided with a plug (223) corresponding to the socket (1211).

3. The fire-fighting smoke exhaust fan according to claim 2, characterized in that, A telescopic push rod (122) is installed at the center of the end block (121). The push rod (122) extends at least partially out of the end block (121). In the first state, the push rod (122) presses against the rotating member (22).

4. The fire-fighting smoke exhaust fan according to claim 1, characterized in that, The inner wall of the outer shell (11) is provided with a locking rod (111), and the rotating part (22) includes a connecting rod (221). A buckle (222) is installed at one end of the connecting rod (221) away from the center of the rotating part (22), and the buckle (222) and the locking rod (111) can be engaged accordingly.

5. A fire-fighting smoke exhaust fan according to claim 4, characterized in that, The locking rod (111) extends radially along the outer shell (11), and the latch (222) is provided with a limiting port (2221). The limiting port (2221) opens toward the rotation direction of the rotating member (22). In the first state, the locking rod (111) is located inside the limiting port (2221).

6. A fire-fighting smoke exhaust fan according to claim 5, characterized in that, The cover plate (21) is provided with a mounting plate (211). The mounting plate (211) is connected to the connecting rod (221) by a spring (23). The two ends of the spring (23) are respectively fixed to the mounting plate (211) and the connecting rod (221). The mounting plate (211) is located on the back side of the opening direction of the limiting port (2221).

7. A fire-fighting smoke exhaust fan according to claim 5, characterized in that, The latch (222) has an arc corner (2222), which is located on the edge between the side of the latch (222) where the limiting opening (2221) is located and the end face of the latch (222) facing the locking rod (111), and the locking rod (111) is a cylindrical rod.

8. A fire-fighting smoke exhaust fan according to claim 4, characterized in that, The connection between the cover plate (21) and the outer shell (11) is located below the end face of the outer shell (11). Two locking rods (111), two connecting rods (221), and two latches (222) are provided. The two locking rods (111) are symmetrically arranged on the outer shell (11).

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