An environmentally friendly smoke exhaust fan

Abstract

This utility model relates to the field of smoke extraction fan cabinet technology, and more particularly to an environmentally friendly smoke extraction fan cabinet, including a protective box; it also includes an air inlet plate and a smoke extraction assembly; the protective box contains an air inlet plate, and multiple rotating rods are rotatably mounted on the inner wall of the air inlet plate. Baffles are fixedly connected to the outer wall of each rotating rod. One end of each rotating rod passes through the air inlet plate and is fixedly connected to a first adjusting plate. A second adjusting plate is rotatably mounted at the lower end of the first adjusting plate. The smoke extraction assembly is located inside the protective box. This utility model uses an electric push rod to drive a support ring towards the outer shell. At this time, the second adjusting plate pushes the first adjusting plate to rotate. Since the rotating rod and the first adjusting plate are fixedly connected, the rotating rod also rotates, thereby causing the multiple baffles to rotate. This changes the gap between the baffles, thus altering the air intake volume and preventing the impeller from operating under high load. This solves the problem of increased energy consumption of the fan due to the inability to control the air intake volume, which would otherwise place a large load on the impeller.

Description

Technical Field

[0001] This utility model belongs to the technical field of smoke exhaust fan cabinets, specifically relating to an environmentally friendly smoke exhaust fan cabinet. Background Technology

[0002] A fume hood is a device specifically designed for the efficient removal of fumes, gases, and particulate matter. With rapid urbanization and increasing demands from industrial, commercial, and residential catering businesses, the problem of fume emissions is becoming increasingly prominent. Fumes contain large amounts of harmful gases and particulate matter, which not only pollute the air but also pose a potential threat to human health.

[0003] Existing smoke extraction fan cabinets draw oil fumes into the fan, use a high-speed rotating impeller to generate centrifugal force to accelerate the fumes, and then guide them outdoors through an exhaust duct system, thereby achieving efficient smoke extraction and avoiding the accumulation of oil fumes.

[0004] During the smoke exhaust process, the fan speed is usually adjusted to handle different volumes of oil fumes, thereby adjusting the fan's energy consumption. When a large amount of oil fumes accumulate inside the fan, the inability to control the air intake will put a large load on the impeller, thus increasing the fan's energy consumption. Utility Model Content

[0005] To overcome the problem that existing smoke exhaust fan hoods cannot control the amount of air intake, which puts a large load on the impeller and increases the energy consumption of the fan, an environmentally friendly smoke exhaust fan hood is proposed.

[0006] The technical solution of this utility model is as follows: an environmentally friendly smoke exhaust fan cabinet, including a protective box; it also includes an air inlet plate and a smoke exhaust assembly; the protective box is provided with an air inlet plate, and multiple rotating rods are rotatably arranged on the inner wall of the air inlet plate. A baffle is fixedly connected to the outer wall of the rotating rod. One end of the rotating rod passes through the air inlet plate and is fixedly connected to a first adjusting plate. A second adjusting plate is rotatably arranged at the lower end of the first adjusting plate. A support ring is fixedly connected to the other end of the second adjusting plate. The support ring is slidably arranged on the outer wall of the air inlet plate. An installation plate is fixedly connected to the outer side of the air inlet plate. An electric push rod is fixedly connected to the upper end of the installation plate. The support ring is fixedly connected to the output end of the electric push rod. The electric push rod is used to drive the support ring to slide along the outer wall of the air inlet plate. The protective box is provided with a smoke exhaust assembly.

[0007] Preferably, the inner wall of the protective box is fixed with two fixing brackets. The upper end of the fixing bracket is rotatably equipped with a fixing ring, and the other end of the fixing ring is threaded with a bolt. The inner wall of the fixing ring is rotatably equipped with a rotating shaft.

[0008] Preferably, the smoke exhaust assembly includes a mounting base, with the mounting base fixedly connected to the upper end of the protective box, and a motor fixedly connected to the upper end of the mounting base. Both the output end of the motor and the outer wall of the rotating shaft are fixedly connected to pulleys, and a transmission belt is provided on the inner wall of the pulleys.

[0009] Preferably, a first fixed ring is fixed to the outer wall of the rotating shaft, a connecting rod is fixed to the outer wall of the first fixed ring, and a wind turbine is fixed to the other end of the connecting rod.

[0010] Preferably, a protective shell is fixed to the front end of the protective box, the protective shell is located on the outside of the transmission belt, and multiple heat dissipation slots are opened through the front end of the protective shell.

[0011] Preferably, the outer wall of the rotating shaft has a second fixed ring that rotates, one end of the rotating rod is rotatably mounted on the outer wall of the second fixed ring, and a housing is fixed between the two air inlet plates.

[0012] Preferably, the impeller is located inside the outer casing, an air inlet pipe is fixed to the right end of the protective box, and an air outlet pipe is fixed to the outer wall of the outer casing.

[0013] The beneficial effects of this utility model are as follows: by activating the electric push rod to drive the support ring to move closer to the outer shell, the second adjusting plate will push the first adjusting plate to rotate. Since the rotating rod and the first adjusting plate are fixedly connected, the rotating rod will also rotate, thereby driving multiple baffles to rotate, causing the gap between the baffles to change, thereby changing the amount of air intake, avoiding the impeller from operating under high load, and solving the problem that the inability to control the amount of air intake will cause a large load on the impeller, thereby increasing the energy consumption of the fan. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0015] Figure 2 The diagram shown is a three-dimensional structural schematic of the support ring of this utility model.

[0016] Figure 3 The diagram shown is a three-dimensional structural schematic of the baffle of this utility model;

[0017] Figure 4 The diagram shown is a cross-sectional perspective view of the fixing frame of this utility model.

[0018] Figure 5 The diagram shown is a three-dimensional structural schematic of the wind turbine of this utility model;

[0019] Figure 6 The diagram shown is a cross-sectional three-dimensional structural schematic of the protective box of this utility model.

[0020] The markings in the attached diagram are as follows: 1. Protective box; 101. Air inlet plate; 102. Rotating rod; 103. Baffle; 104. First adjusting plate; 105. Second adjusting plate; 106. Support ring; 107. Mounting plate; 108. Electric push rod; 2. Fixing frame; 201. Mounting base; 202. Motor; 203. Pulley; 204. Transmission belt; 205. First fixing ring; 206. Connecting rod; 207. Fan wheel; 208. Protective shell; 209. Heat dissipation groove; 3. Fixing ring; 4. Bolt; 5. Rotating shaft; 6. Second fixing ring; 7. Outer shell; 8. Air inlet pipe; 9. Air outlet pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-6 This utility model provides an embodiment: an environmentally friendly smoke exhaust fan cabinet, including a protective box 1; it also includes an air inlet plate 101 and a smoke exhaust assembly; the protective box 1 is provided with an air inlet plate 101, and multiple rotating rods 102 are rotatably arranged on the inner wall of the air inlet plate 101. A baffle 103 is fixedly connected to the outer wall of the rotating rod 102. One end of the rotating rod 102 passes through the air inlet plate 101 and is fixedly connected to a first adjusting plate 104. A second adjusting plate 105 is rotatably arranged at the lower end of the first adjusting plate 104. A support ring 106 is fixedly connected to the other end of the second adjusting plate 105. The support ring 106 is slidably arranged on the outer wall of the air inlet plate 101. An installation plate 107 is fixedly connected to the outer side of the air inlet plate 101. An electric push rod 108 is fixedly connected to the upper end of the installation plate 107. The support ring 106 is connected to the electric push rod 108. The output end of the electric push rod 108 is fixedly connected. The electric push rod 108 is used to drive the support ring 106 to slide along the outer wall of the air inlet plate 101. The protective box 1 is equipped with a smoke exhaust assembly. By starting the electric push rod 108, the support ring 106 is driven to move closer to the outer shell 7. At this time, the second adjusting plate 105 will push the first adjusting plate 104 to rotate. Since the rotating rod 102 and the first adjusting plate 104 are fixedly connected, the rotating rod 102 will also rotate, thereby driving multiple baffles 103 to rotate, causing the gap between the baffles 103 to change, thereby changing the size of the air intake, avoiding the impeller 207 from operating under high load, and solving the problem that the impeller will be subjected to a large load due to the inability to control the size of the air intake, thus increasing the energy consumption of the fan.

[0023] Please see Figures 3-6In this embodiment, two fixing brackets 2 are fixedly connected to the inner wall of the protective box 1. A fixing ring 3 is rotatably provided on the upper end of the fixing bracket 2. A bolt 4 is threadedly installed on the other end of the fixing ring 3. A rotating shaft 5 is rotatably provided on the inner wall of the fixing ring 3. A second fixing ring 6 is rotatably provided on the outer wall of the rotating shaft 5. One end of the rotating rod 102 is rotatably provided on the outer wall of the second fixing ring 6. A housing 7 is fixedly connected between the two air inlet plates 101. The impeller 207 is located inside the housing 7. An air inlet pipe 8 is fixedly connected to the right end of the protective box 1. An air outlet pipe 9 is fixedly connected to the outer wall of the housing 7. By rotating the bolt 4, the fixing ring 3 can be disassembled, thereby allowing the rotating shaft 5 to be removed for easy maintenance and cleaning, and avoiding excessive oil fumes adhering to the inner wall of the housing 7, which would affect the smoke exhaust effect.

[0024] Please see Figures 1-5 In this embodiment, the smoke exhaust assembly includes a mounting base 201. The mounting base 201 is fixedly connected to the upper end of the protective box 1. A motor 202 is fixedly connected to the upper end of the mounting base 201. A pulley 203 is fixedly connected to both the output end of the motor 202 and the outer wall of the rotating shaft 5. A transmission belt 204 is provided on the inner wall of the pulley 203. A first fixing ring 205 is fixedly connected to the outer wall of the rotating shaft 5. A connecting rod 206 is fixedly connected to the outer wall of the first fixing ring 205. A fan wheel 207 is fixedly connected to the other end of the connecting rod 206. A protective shield is fixedly connected to the front end of the protective box 1. The protective shell 208 is located outside the transmission belt 204. Multiple heat dissipation slots 209 are provided through the front end of the protective shell 208. The starting motor 202 drives the pulley 203 to rotate, which in turn drives the rotating shaft 5 to rotate under the action of the transmission belt 204, thereby causing the impeller 207 to rotate at high speed. At this time, the wind speed at the center of both sides of the impeller 207 is relatively low, which can draw in the oil fumes inside the air inlet pipe 8. Then, under the action of the centrifugal force of the impeller 207, the oil fumes are accelerated and thus discharged.

[0025] When in use, the motor 202 is started to drive the pulley 203 to rotate, and the drive belt 204 drives the rotating shaft 5 to rotate, thereby causing the impeller 207 to rotate at high speed. At this time, the wind speed at the center of both sides of the impeller 207 is relatively small, which can draw in the oil fumes inside the air inlet pipe 8. Then, under the action of the centrifugal force of the impeller 207, the oil fumes are accelerated and thus discharged.

[0026] During the smoke exhaust process, the electric push rod 108 is activated to drive the support ring 106 to move closer to the outer casing 7. At this time, the second adjusting plate 105 will push the first adjusting plate 104 to rotate. Since the rotating rod 102 and the first adjusting plate 104 are fixedly connected, the rotating rod 102 will also rotate, thereby driving multiple baffles 103 to rotate, causing the gap between the baffles 103 to change, thereby changing the amount of air intake and preventing the impeller 207 from operating under high load.

[0027] Through the above steps, by activating the electric push rod 108, the support ring 106 is driven to move closer to the outer casing 7. At this time, the second adjusting plate 105 will push the first adjusting plate 104 to rotate. Since the rotating rod 102 and the first adjusting plate 104 are fixedly connected, the rotating rod 102 will also rotate, thereby driving multiple baffles 103 to rotate, causing the gap between the baffles 103 to change, thereby changing the amount of air intake. This avoids the impeller 207 from operating under high load, and solves the problem that the inability to control the amount of air intake will generate a large load on the impeller, thereby increasing the energy consumption of the fan.

Claims

1. An environmentally friendly fume exhaust air cabinet comprising a protective box (1); characterized in that: It also includes an air inlet plate (101) and a smoke exhaust assembly; the protective box (1) is equipped with an air inlet plate (101), and multiple rotating rods (102) are rotatably arranged on the inner wall of the air inlet plate (101). A baffle (103) is fixedly connected to the outer wall of the rotating rod (102). One end of the rotating rod (102) passes through the air inlet plate (101) and is fixedly connected to a first adjusting plate (104). A second adjusting plate (105) is rotatably arranged at the lower end of the first adjusting plate (104). The other end of the second adjusting plate (105) is... A support ring (106) is fixedly connected to the end of the air inlet plate (101), and the support ring (106) is slidably disposed on the outer wall of the air inlet plate (101). An mounting plate (107) is fixedly connected to the outer side of the air inlet plate (101), and an electric push rod (108) is fixedly connected to the upper end of the mounting plate (107). The support ring (106) is fixedly connected to the output end of the electric push rod (108), and the electric push rod (108) is used to drive the support ring (106) to slide along the outer wall of the air inlet plate (101). A smoke exhaust assembly is provided inside the protective box (1).

2. The environmentally friendly smoke exhaust fan according to claim 1, characterized in that: The inner wall of the protective box (1) is fixed with two fixed brackets (2). The upper end of the fixed bracket (2) is rotatably equipped with a fixed ring (3). The other end of the fixed ring (3) is threaded with a bolt (4). The inner wall of the fixed ring (3) is rotatably equipped with a rotating shaft (5).

3. The environmentally friendly smoke exhaust fan according to claim 2, characterized in that: The smoke exhaust assembly includes a mounting base (201), the upper end of the protective box (1) is fixedly connected to the mounting base (201), the upper end of the mounting base (201) is fixedly connected to the motor (202), the output end of the motor (202) and the outer wall of the rotating shaft (5) are both fixedly connected to pulleys (203), and the inner wall of the pulleys (203) is provided with a transmission belt (204).

4. The environmentally friendly smoke exhaust fan according to claim 2, characterized in that: A first fixed ring (205) is fixed to the outer wall of the rotating shaft (5), a connecting rod (206) is fixed to the outer wall of the first fixed ring (205), and a wind turbine (207) is fixed to the other end of the connecting rod (206).

5. The environmentally friendly smoke exhaust fan according to claim 3, characterized in that: The protective box (1) is fixed to the front end with a protective shell (208). The protective shell (208) is located on the outside of the transmission belt (204). Multiple heat dissipation slots (209) are opened through the front end of the protective shell (208).

6. The environmentally friendly smoke exhaust fan according to claim 2, characterized in that: The outer wall of the rotating shaft (5) has a second fixed ring (6) that rotates, and one end of the rotating rod (102) is rotatably set on the outer wall of the second fixed ring (6). The outer shell (7) is fixed between the two air inlet plates (101).

7. The environmentally friendly smoke exhaust fan according to claim 6, characterized in that: The impeller (207) is located inside the outer shell (7), and the right end of the protective box (1) is fixed with an air inlet pipe (8), and the outer wall of the outer shell (7) is fixed with an air outlet pipe (9).

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