Heat-resistant structure of smoke exhaust fan

Abstract

The utility model discloses a heat-resisting structure of a smoke exhaust fan, and relates to the technical field of fans, the heat-resisting structure comprises a main pipe, a first conical pipe, an air inlet pipe, a second conical pipe and an air outlet pipe, the right end of the main pipe is fixedly communicated with the first conical pipe, the right end of the first conical pipe is fixedly communicated with the air inlet pipe, the upper end of the main pipe is provided with a mounting groove, and the main pipe is provided with a fan smoke exhaust mechanism. A dust filtering mechanism and a dust cooling and falling mechanism are arranged at the inner end of the air inlet pipe, the dust cooling and falling mechanism is arranged on the right side of the dust filtering mechanism, the fan smoke discharging mechanism is used for discharging smoke dust and isolating the stepping motor outside, and the dust filtering mechanism is used for filtering the external smoke dust. The stepping motor can be arranged at the outer end of the main pipe through the fan smoke exhaust mechanism, the stepping motor is separated from high-temperature smoke dust, the high-temperature smoke dust is prevented from being attached to the surface of the stepping motor, the heat dissipation efficiency of the stepping motor is improved, and the smoke exhaust effect of the main pipe is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to a heat-resistant structure for a smoke exhaust fan. Background Technology

[0002] Smoke exhaust fans are machines that can quickly remove odors, high temperatures, and oil fumes generated during food processing in the kitchen. These machines are characterized by good high-temperature resistance and high efficiency. Fire-fighting fans, on the other hand, are industrial fans that can operate continuously for more than 60 minutes at 300°C and for 20 hours at 100°C without damage.

[0003] For example, utility model patent CN212376972U discloses a heat-resistant fire-fighting smoke exhaust fan. Its structure includes a body, base frame, junction box, electrical connection wires, an exhaust head, an inlet head, a filter device, a spray device, a support base, a frame, a drive motor, a rotating shaft, and an impeller. The bottom of the body is welded to the base frame. A junction box is fixedly embedded in the middle of the front end of the body. An electrical connection wire is provided at the left end of the junction box. The middle parts of the left and right ends of the body are respectively fixedly connected to the exhaust head and the inlet head. A filter device is provided on the left side of the inlet head. This utility model has the following beneficial effects: by setting a spray device on the right side of the inlet head, the temperature is reduced and the pollution of motor components by smoke and dust is reduced, achieving the effect of adding a water mist section. The design features a component that reduces operating temperature and extends service life. A spray device is installed on the left side of the air inlet, facilitating easy disassembly and cleaning through a lifting installation method. However, the drive motor for exhausting smoke is housed within the frame. During operation, the drive motor generates significant heat, which cannot quickly exchange with the outside air, leading to overheating. Furthermore, even after filtering out most of the dust, fine dust particles remain on the drive motor's surface, further reducing heat dissipation. Therefore, we propose a heat-resistant structure for the exhaust fan. Utility Model Content

[0004] The purpose of this invention is to provide a heat-resistant structure for a smoke exhaust fan to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat-resistant structure for a smoke exhaust fan, comprising a main pipe, a first conical pipe, an inlet pipe, a second conical pipe, and an outlet pipe. The right end of the main pipe is fixedly connected to the first conical pipe, and the right end of the first conical pipe is fixedly connected to the inlet pipe. An installation groove is provided at the upper end of the main pipe, and a fan smoke exhaust mechanism is provided on the main pipe. A dust filtration mechanism and a dust cooling and dust suppression mechanism are provided at the inner end of the inlet pipe. The dust cooling and dust suppression mechanism is located to the right of the dust filtration mechanism. The fan smoke exhaust mechanism is used to exhaust smoke and dust and isolate the stepper motor from the outside. The dust filtration mechanism is used to filter external smoke and dust, and the dust cooling and dust suppression mechanism is used to cool and suppress dust.

[0006] Preferably, the fan exhaust mechanism includes a first placement sleeve, the outer end of which is fixedly installed on the inner wall of the mounting groove. An upper mounting sleeve is detachably installed on the upper end of the first placement sleeve, and a lower mounting sleeve is detachably installed on the lower end of the first placement sleeve. A base is fixedly installed on the upper side of the outer end of the main pipe. A stepper motor is fixedly installed on the upper end of the base. A rotating shaft is fixedly installed on the output end of the stepper motor. A first pulley is fixedly installed on the right end of the rotating shaft through the left side of the upper mounting sleeve. A second pulley is provided below the first pulley. The second pulley is located inside the lower mounting sleeve. A belt is sleeved between the first pulley and the second pulley. A follower shaft is fixedly installed on the left end of the second pulley. A fixed frame is rotatably connected to the middle of the outer end of the follower shaft through a bearing. The main pipe is fixedly installed on the outer end of the fixed frame. Multiple circumferentially distributed rotating fan blades are fixedly installed on the left end of the follower shaft.

[0007] Preferably, the dust filtration mechanism includes a first mounting ring, the outer end of which is fixedly mounted on the inner wall of the air inlet pipe. The right end of the first mounting ring has two symmetrically arranged first mounting holes. The right end of the first mounting ring abuts against two symmetrically arranged contact plates. Each contact plate has a second mounting hole through its surface. The second mounting hole is threadedly connected to the inner wall of the first mounting hole with a locking bolt. A filter screen is fixedly mounted on one end of each of the two contact plates close to each other.

[0008] Preferably, the dust cooling and dust suppression mechanism includes a second mounting ring, with a placement groove at the left end of the second mounting ring. The inner wall of the placement groove is provided with a plurality of nozzles arranged in a circular pattern. The outer end of the second mounting ring is fixedly connected to a water inlet pipe, which passes through the main pipe. The upper end of the water inlet pipe is fixedly connected to a water pump, and the outer end of the water pump is fixedly connected to the main pipe. The upper end of the water pump is fixedly connected to a main water pipe.

[0009] Preferably, the follower shaft passes through the lower mounting sleeve, and the outer end of the follower shaft is rotatably connected to the lower mounting sleeve via a bearing.

[0010] Preferably, the left end of the main pipe is fixedly connected to a second conical pipe, and the left end of the second conical pipe is fixedly connected to an air outlet pipe.

[0011] Preferably, a conical ring plate is fixedly installed on the inner wall of the second mounting ring, and the conical ring plate is arranged in a conical shape with a larger outer diameter and a smaller inner diameter.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model can separate the stepper motor from the high-temperature smoke and dust by using a fan exhaust mechanism, thereby preventing the high-temperature smoke and dust from adhering to the surface of the stepper motor, improving the heat dissipation efficiency of the stepper motor itself, and benefiting the exhaust effect of the main pipe.

[0014] 2. This utility model can directly filter smoke and dust through a filter screen via a dust filtration mechanism, and the filter screen can be removed from the first mounting ring and replaced by tightening the bolts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the smoke exhaust mechanism of the present invention.

[0018] Figure 4 This is a schematic diagram of the dust filtration mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the dust cooling and dust suppression mechanism of this utility model.

[0020] In the diagram: 1. Main pipe; 2. First conical pipe; 3. Inlet pipe; 4. Second conical pipe; 5. Outlet pipe; 6. Fan exhaust mechanism; 61. First mounting sleeve; 62. Upper mounting sleeve; 63. Lower mounting sleeve; 64. Base; 65. Stepper motor; 66. Rotating shaft; 67. First pulley; 68. Second pulley; 69. Belt; 610. Follower shaft; 611. Rotating fan blade; 612. Fixing frame; 7. Dust filtration mechanism; 71. First mounting ring; 72. First mounting hole; 73. Contact plate; 74. Second mounting hole; 75. Filter screen; 76. Locking bolt; 8. Dust cooling and dust suppression mechanism; 81. Second mounting ring; 82. Placement slot; 83. Nozzle; 84. Conical ring plate; 85. Water inlet pipe; 86. Water pump; 87. Main water pipe; 9. Mounting slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a heat-resistant structure for a smoke exhaust fan, including a main pipe 1, a first conical pipe 2, an air inlet pipe 3, a second conical pipe 4, and an air outlet pipe 5. The right end of the main pipe 1 is fixedly connected to the first conical pipe 2, and the right end of the first conical pipe 2 is fixedly connected to the air inlet pipe 3. An installation groove 9 is provided at the upper end of the main pipe 1. A fan smoke exhaust mechanism 6 is provided on the main pipe 1. A dust filter mechanism 7 and a dust cooling and dust reduction mechanism 8 are provided at the inner end of the air inlet pipe 3. The dust cooling and dust reduction mechanism 8 is located to the right of the dust filter mechanism 7. The fan smoke exhaust mechanism 6 is used to exhaust smoke and dust and isolate the stepper motor 65 from the outside. The dust filter mechanism 7 is used to filter external smoke and dust. The dust cooling and dust reduction mechanism 8 is used to cool and reduce dust.

[0023] In this embodiment, the fan exhaust mechanism 6 includes a first placement sleeve 61. The outer end of the first placement sleeve 61 is fixedly installed on the inner wall of the mounting groove 9. An upper mounting sleeve 62 is detachably installed on the upper end of the first placement sleeve 61, and a lower mounting sleeve 63 is detachably installed on the lower end of the first placement sleeve 61. A base 64 is fixedly installed on the upper side of the outer end of the main pipe 1. A stepper motor 65 is fixedly installed on the upper end of the base 64. A rotating shaft 66 is fixedly installed on the output end of the stepper motor 65. The right end of the rotating shaft 66 passes through the left side of the upper mounting sleeve 62. A first pulley 67 is fixedly installed, and a second pulley 68 is provided below the first pulley 67. The second pulley 68 is located in the lower mounting sleeve 63. A belt 69 is sleeved between the first pulley 67 and the second pulley 68. A follower shaft 610 is fixedly installed at the left end of the second pulley 68. A fixed frame 612 is rotatably connected to the middle of the outer end of the follower shaft 610 through a bearing. A main pipe 1 is fixedly installed at the outer end of the fixed frame 612. Multiple rotating fan blades 611 distributed in a circle are fixedly installed at the left end of the follower shaft 610.

[0024] Specifically, the stepper motor 65 is started, and the output of the stepper motor 65 drives the rotating shaft 66 to rotate. The rotating shaft 66 drives the first pulley 67 to rotate. The first pulley 67 drives the second pulley 68 to rotate in the same direction through the belt 69. The second pulley 68 drives the follower shaft 610 to rotate. During the rotation, the follower shaft 610 rotates relative to the fixed frame 612. The follower shaft 610 drives the rotating fan blades 611 to directly discharge the smoke and dust that enters the air inlet pipe 3.

[0025] In this embodiment, the dust filtering mechanism 7 includes a first mounting ring 71. The outer end of the first mounting ring 71 is fixedly installed on the inner wall of the air inlet pipe 3. The right end of the first mounting ring 71 has two symmetrically arranged first mounting holes 72. The right end of the first mounting ring 71 abuts against two symmetrically arranged contact plates 73. Each contact plate 73 has a second mounting hole 74 through it. The second mounting hole 74 is threadedly connected to the inner wall of the first mounting hole 72 with a locking bolt 76. A filter screen 75 is fixedly installed on one end of the two contact plates 73 close to each other.

[0026] Specifically, the dust filtration mechanism 7 can directly filter smoke and dust through the filter screen 75, and the filter screen 75 can be removed from the first mounting ring 71 and replaced by tightening the bolt 76.

[0027] In this embodiment, the dust cooling and dust suppression mechanism 8 includes a second mounting ring 81. The left end of the second mounting ring 81 is provided with a placement groove 82. The inner wall of the placement groove 82 is provided with a plurality of nozzles 83 arranged in a circular pattern. The outer end of the second mounting ring 81 is fixedly connected to a water inlet pipe 85. The water inlet pipe 85 passes through the main pipe 1. The upper end of the water inlet pipe 85 is fixedly connected to a water pump 86. The outer end of the water pump 86 is fixedly connected to the main pipe 1. The upper end of the water pump 86 is fixedly connected to a main water pipe 87.

[0028] Specifically, the water pump 86 is started, and the water pump 86 pumps the water in the external water tank directly into the main pipe 1. The water then passes through the inlet pipe 85 to the second mounting ring 81 and is sprayed out from the nozzle 83.

[0029] In this embodiment, the follower shaft 610 passes through the lower mounting sleeve 63, and the outer end of the follower shaft 610 is rotatably connected to the lower mounting sleeve 63 through a bearing.

[0030] Specifically, it ensures that the follower shaft 610 does not interfere with the lower mounting sleeve 63 during rotation.

[0031] In this embodiment, the left end of the main pipe 1 is fixedly connected to the second conical pipe 4, and the left end of the second conical pipe 4 is fixedly connected to the air outlet pipe 5.

[0032] Specifically, the second conical pipe 4 and the air outlet pipe 5 can be used to discharge the smoke and dust after cooling and dust suppression.

[0033] In this embodiment, a conical ring plate 84 is fixedly installed on the inner wall of the second mounting ring 81. The conical ring plate 84 is arranged in a conical shape with a larger outer diameter and a smaller inner diameter.

[0034] Specifically, the conical ring plate 84 can guide the flow of smoke and dust, reducing the probability of smoke and dust coming into contact with the nozzle 83.

[0035] Working principle: During use, the stepper motor 65 and the pump body can be started. The output end of the stepper motor 65 drives the rotating shaft 66 to rotate. The rotating shaft 66 drives the first pulley 67 to rotate. The first pulley 67 drives the second pulley 68 to rotate in the same direction through the belt 69. The second pulley 68 drives the follower shaft 610 to rotate. During the rotation, the follower shaft 610 rotates relative to the fixed frame 612. The follower shaft 610 drives the rotating fan blades 611 to directly discharge the smoke and dust entering the air inlet pipe 3. At this time, the water pump 86 pumps the water in the external water tank directly into the main pipe 1. The water then passes through the water inlet pipe 85 to the second mounting ring 81 and is sprayed out from the nozzle 83. The filter screen 75 filters the cooled smoke and dust.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-resistant structure for a smoke exhaust fan, comprising a main pipe (1), a first conical pipe (2), an air inlet pipe (3), a second conical pipe (4), and an air outlet pipe (5), characterized in that: The right end of the main pipe (1) is fixedly connected to the first conical pipe (2), and the right end of the first conical pipe (2) is fixedly connected to the air inlet pipe (3). The upper end of the main pipe (1) is provided with an installation groove (9). The main pipe (1) is provided with a fan exhaust mechanism (6). The inner end of the air inlet pipe (3) is provided with a dust filter mechanism (7) and a dust cooling and dust reduction mechanism (8). The dust cooling and dust reduction mechanism (8) is located on the right side of the dust filter mechanism (7). The fan exhaust mechanism (6) is used to exhaust smoke and dust and isolate the stepper motor (65) from the outside. The dust filter mechanism (7) is used to filter external smoke and dust. The dust cooling and dust reduction mechanism (8) is used to cool and reduce dust.

2. The heat-resistant structure of a smoke exhaust fan according to claim 1, characterized in that: The fan exhaust mechanism (6) includes a first placement sleeve (61), the outer end of which is fixedly installed on the inner wall of the mounting groove (9). An upper mounting sleeve (62) is detachably installed on the upper end of the first placement sleeve (61), and a lower mounting sleeve (63) is detachably installed on the lower end of the first placement sleeve (61). A base (64) is fixedly installed on the upper side of the outer end of the main pipe (1). A stepper motor (65) is fixedly installed on the upper end of the base (64). A rotating shaft (66) is fixedly installed on the output end of the stepper motor (65). The right end of the rotating shaft (66) passes through the left side of the upper mounting sleeve (62) and is fixedly installed on the upper side. The device is equipped with a first pulley (67), and a second pulley (68) is provided at the lower part of the first pulley (67). The second pulley (68) is located in the lower mounting sleeve (63). A belt (69) is sleeved between the first pulley (67) and the second pulley (68). A follower shaft (610) is fixedly installed at the left end of the second pulley (68). A fixed frame (612) is rotatably connected to the middle of the outer end of the follower shaft (610) through a bearing. A main pipe (1) is fixedly installed at the outer end of the fixed frame (612). A plurality of circumferentially distributed rotating fan blades (611) are fixedly installed at the left end of the follower shaft (610).

3. The heat-resistant structure of a smoke exhaust fan according to claim 1, characterized in that: The dust filtration mechanism (7) includes a first mounting ring (71), the outer end of which is fixedly installed on the inner wall of the air inlet pipe (3). The right end of the first mounting ring (71) has two symmetrically arranged first mounting holes (72). The right end of the first mounting ring (71) abuts against two symmetrically arranged contact plates (73). Each contact plate (73) has a second mounting hole (74) through it. The second mounting hole (74) is threadedly connected to the inner wall of the first mounting hole (72) with a locking bolt (76). The two contact plates (73) are fixedly installed with a filter screen (75) at one end close to each other.

4. The heat-resistant structure of a smoke exhaust fan according to claim 1, characterized in that: The dust cooling and dust suppression mechanism (8) includes a second mounting ring (81). The left end of the second mounting ring (81) is provided with a placement groove (82). The inner wall of the placement groove (82) is provided with a plurality of nozzles (83) arranged in a circular pattern. The outer end of the second mounting ring (81) is fixedly connected to a water inlet pipe (85). The water inlet pipe (85) passes through the main pipe (1). The upper end of the water inlet pipe (85) is fixedly connected to a water pump (86). The outer end of the water pump (86) is fixedly connected to the main pipe (1). The upper end of the water pump (86) is fixedly connected to a main water pipe (87).

5. The heat-resistant structure of a smoke exhaust fan according to claim 2, characterized in that: The follower shaft (610) passes through the lower mounting sleeve (63), and the outer end of the follower shaft (610) is rotatably connected to the lower mounting sleeve (63) through a bearing.

6. The heat-resistant structure of a smoke exhaust fan according to claim 1, characterized in that: The left end of the main pipe (1) is fixedly connected to a second conical pipe (4), and the left end of the second conical pipe (4) is fixedly connected to an air outlet pipe (5).

7. The heat-resistant structure of a smoke exhaust fan according to claim 4, characterized in that: A conical ring plate (84) is fixedly installed on the inner wall of the second mounting ring (81), and the conical ring plate (84) is arranged in a conical shape with a larger outer diameter and a smaller inner diameter.

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