High-temperature fire-fighting smoke exhaust fan capable of rapidly cooling

Abstract

The high-temperature fire-fighting smoke exhaust fan comprises a supporting frame, a rotating shaft protection assembly and a cooling assembly, a smoke exhaust assembly is arranged in the center of the inner side of the supporting frame, the rotating shaft protection assembly is located on the inner side of the supporting frame, and the rotating shaft protection assembly comprises a dust cover, a bearing seat and an air guide plate. A dust cover is arranged on the outer side of the smoke exhaust assembly, bearing seats are fixed to the left side and the right side of the dust cover correspondingly, the air guide plates are fixed to the left ends of the bearing seats, the cooling assembly is located on the outer side of the rotating shaft protection assembly, and the cooling assembly comprises a partition plate, a storage cavity, an outlet and a filling opening. A partition plate is coaxially fixed to the inner wall of the supporting frame, a storage cavity is formed between the partition plate and the supporting frame, and four sets of outlets are formed in the inner side of the partition plate in a penetrating mode. The situation that indoor smoke is not exhausted and is closed in advance is prevented, the use time of the exhaust range hood at high temperature is prolonged, and escape of indoor personnel is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a high-temperature fire fighting smoke exhaust fan capable of rapidly cooling down. Background Art

[0002] Firefighting refers to the process of preventing or resolving man-made or accidental disasters that people encounter in their lives, work and studies. Firefighting smoke exhaust fans are used to quickly exhaust odors, high temperatures and oil smoke gases generated in the room to buy time for people to evacuate. For example, the patent document with application number CN202220960999.4 discloses a high-temperature firefighting smoke exhaust fan that can quickly cool down. By providing an adjustment device, the angle of the wind tube direction can be adjusted, making the wind tube blowing angle more diverse and applicable to a wider range. By providing a protective cover outside the motor, the motor can be protected.

[0003] However, in similar solutions mentioned above, a large amount of oil smoke is adsorbed on the outside of the fan blades and the shaft connection when passing through the fan, and it is inconvenient to clean, thereby reducing the rotation speed of the fan blades. In addition, when the fire source is close to the air intake, the temperature on the outside of the fan rises rapidly, causing the smoke in the house to be shut down prematurely without being discharged, which is not conducive to the escape of people in the house.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a high-temperature fire smoke exhaust fan capable of rapid cooling is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a high-temperature fire smoke exhaust fan capable of rapid cooling, which solves the problem that a large amount of oil smoke is adsorbed on the outside of the fan blades and the connection between the shaft when passing through the fan, and is inconvenient to clean, thereby reducing the rotation speed of the fan blades. In addition, when the fire source is located close to the air intake port, the temperature on the outside of the fan rises rapidly, causing the smoke in the room to be closed prematurely without being discharged, which is not conducive to the escape of people in the room.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature fire-fighting smoke exhaust fan capable of quickly cooling down, comprising a support frame, a shaft protection assembly and a cooling assembly, a smoke exhaust assembly is arranged at the inner center of the support frame, and the shaft protection assembly is located on the inner side of the support frame, and the shaft protection assembly comprises a dust cover, a bearing seat and an air guide plate, and the dust cover is arranged on the outer side of the smoke exhaust assembly, the bearing seats are fixed on the left and right sides of the dust cover, and the air guide plate is fixed on the left end of the bearing seat, the cooling assembly is located on the outer side of the shaft protection assembly, and the cooling assembly comprises a partition, a storage cavity, an outlet and a filling port, the partition is coaxially fixed to the inner wall of the support frame, and a storage cavity is arranged between the partition and the support frame, and a filling port is penetrated through the upper end of the support frame, and four groups of outlets are penetrated through the inner side of the partition.

[0007] Furthermore, the smoke exhaust assembly includes a drive motor, a bevel gear set, a connecting shaft and fan blades, and the drive motor is penetrated through the side wall of the support frame, and the output end of the drive motor is connected to the bevel gear set, the output end of the bevel gear set is interference connected with the connecting shaft, and two groups of fan blades are connected to the left and right sides of the connecting shaft.

[0008] Furthermore, the driving motor forms a rotating structure with the two groups of fan blades through the connecting shaft, and the connecting shaft is located on the inner side of the dust cover.

[0009] Furthermore, the air guide plate is conical in shape, and the right diameter of the air guide plate is larger than the diameter of the dust cover.

[0010] Furthermore, an air inlet is arranged on the left side of the air guide plate, and an air outlet is arranged on the right side of the rotating shaft protection assembly.

[0011] Furthermore, a sealing cover is provided on the outer side of the outlet, and a memory metal wire is penetrated through the edge of the sealing cover.

[0012] The utility model provides a high-temperature fire smoke exhaust fan capable of rapid cooling, which has the following beneficial effects:

[0013] It can protect the shaft connection, reduce the number of cleaning times, prevent impurities from being adsorbed on the shaft, and prevent the fan blades from rotating. Moreover, when the fire source is close to the air inlet, it can prevent the temperature outside the fan from rising rapidly, prevent the smoke in the house from being discharged and shut down in advance, increase the use time of the exhaust hood at high temperature, and facilitate the escape of people in the house. The specific contents are as follows:

[0014] Start the drive motor, and the motor drives the shaft and the fan blades to rotate in the same direction, so that the thick smoke in the room enters from the air inlet and passes through the fan blades and the support frame along the outside of the air guide plate. The air guide plate and the dust cover form a shield to prevent the thick smoke from contacting the shaft, and when the temperature inside the support frame is high, the outlet automatically opens to allow the internal carbon dioxide to diffuse outward, thereby quickly cooling the inside of the support frame, which can increase the operating time of the smoke exhaust fan at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a high-temperature fire smoke exhaust fan capable of rapid cooling according to the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of a high-temperature fire smoke exhaust fan capable of rapid cooling according to the utility model;

[0017] Figure 3 This is a schematic diagram of the outlet structure of a high-temperature fire smoke exhaust fan capable of rapid cooling in the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of a rotating shaft protection component of a high-temperature fire smoke exhaust fan capable of rapid cooling.

[0019] In the figure: 1. support frame; 2. smoke exhaust assembly; 201. drive motor; 202. bevel gear set; 203. connecting shaft; 204. fan blade; 3. air inlet; 4. shaft protection assembly; 401. dust cover; 402. bearing seat; 403. air guide plate; 5. air outlet; 6. cooling assembly; 601. partition; 602. storage chamber; 603. outlet; 604. filling port; 631. sealing cover; 632. memory metal wire. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4As shown, a high-temperature fire smoke exhaust fan capable of rapid cooling includes a support frame 1, a shaft protection component 4 and a cooling component 6. A smoke exhaust component 2 is arranged at the inner center of the support frame 1. The smoke exhaust component 2 includes a drive motor 201, a bevel gear set 202, a connecting shaft 203 and a fan blade 204. The drive motor 201 is arranged through the side wall of the support frame 1, and the output end of the drive motor 201 is connected to the bevel gear set 202. The output end of the bevel gear set 202 is interference-connected with the connecting shaft 203. Since the drive motor 201 is located on the outer side of the support frame 1, it can The flow space of the airflow inside the support frame 1 is increased to facilitate the rapid extraction of thick smoke, because two groups of fan blades 204 are connected to the left and right sides of the connecting shaft 203, and because the driving motor 201 and the two groups of fan blades 204 form a rotating structure through the connecting shaft 203, the driving motor 201 can drive the two groups of fan blades 204 to rotate at the same time, avoiding the fan blades 204 from getting stuck. An air inlet 3 is provided on the left side of the air guide plate 403, and an air outlet 5 is provided on the right side of the rotating shaft protection component 4, which reduces obstacles at the air inlets and outlets and can increase the circulation speed of the internal airflow.

[0022] The shaft protection assembly 4 is located on the inner side of the support frame 1, and the shaft protection assembly 4 includes a dust cover 401, a bearing seat 402 and an air guide plate 403, and the dust cover 401 is arranged on the outer side of the smoke exhaust assembly 2. Because the connecting shaft 203 is located on the inner side of the dust cover 401, the connecting shaft 203 can be protected, and because the interior is in a closed state, the effect of the lubricating fluid can be extended, and the service life of the connecting shaft 203 can be improved. The left and right sides of the dust cover 401 are fixed with bearing seats 402 to support the rotation of the connecting shaft 203, thereby improving the driving device. The stability of the arrangement is ensured, and an air guide plate 403 is fixed to the left end of the bearing seat 402. Because the shape of the air guide plate 403 is conical, and because the right diameter of the air guide plate 403 is larger than the diameter of the dust cover 401, a slope is formed in front of the fan blades, so that the air flow flows along the oblique edge of the air guide plate 403, which can prevent thick smoke from blowing directly onto the connecting shaft 203, and the connecting shaft 203 is further protected by the dust cover 401, thereby preventing impurities in the thick smoke from being adsorbed on the outside of the connecting shaft 203, thereby reducing the number of cleaning times of the shaft and preventing it from affecting the rotation of the fan blades.

[0023] The cooling component 6 is located on the outside of the rotating shaft protection component 4. The cooling component 6 includes a partition 601, a storage cavity 602, an outlet 603 and a filling port 604. The inner wall of the support frame 1 is coaxially fixed with a partition 601, and a storage cavity 602 is provided between the partition 601 and the support frame 1 for storing liquid carbon dioxide. The upper end of the support frame 1 is penetrated with a filling port 604 for adding carbon dioxide into the storage cavity 602 for multiple uses. The inner side of the partition 601 is penetrated with four groups of outlets 603. Carbon dioxide diffuses from the outlet 603 to the inner side of the support frame 1. Due to the high temperature inside, the liquid carbon dioxide sublimates rapidly to reduce In order to lower the temperature inside the support frame 1, a sealing cover 632 is provided on the outer side of the outlet 603 for keeping the storage chamber 602 in a sealed state, and a memory wire 631 is penetrated at the edge of the sealing cover 632. The memory wire 631 is curved at normal temperature. When a large amount of thick smoke passes through the memory wire 631, the temperature of the memory wire 631 is increased and restored to a straight state, so that the sealing cover 632 is automatically popped open and the liquid carbon dioxide inside is released, which can reduce the temperature inside the smoke exhaust component 2 and the support frame 1, avoid premature closure without exhausting the smoke in the house, increase the use time of the exhaust hood at high temperature, and facilitate the escape of people in the house.

[0024] In summary, when this type of fire smoke exhaust fan is used, first, when a fire occurs in the room, the drive motor 201 is started, and the drive motor 201 drives the bevel gear 202 and the connecting shaft 203 to rotate, and the connecting shaft 203 drives the two sets of fan blades 204 to rotate at the same time, so that the thick smoke in the room enters from the air inlet 3, and flows along the side wall of the wind guide plate 403 over the root of the fan blade 204, passes through the gap between the fan blades 204, and then flows out from the air outlet 5, and when the internal temperature of the support frame 1 is between 80 degrees Celsius and 280 degrees Celsius, the memory metal wire 632 slowly deforms until it is fully straightened. At this time, the sealing cover 631 rotates along the hinge and opens the outlet 603, so that the internal carbon dioxide liquid diffuses outward. Since the carbon dioxide liquid contacts the high-temperature thick smoke and quickly sublimates, it absorbs a large amount of heat, thereby reducing the temperature inside the support frame 1, so that the drive motor continues to run until all the carbon dioxide flows out and the temperature rises to 280 degrees Celsius again, then the drive motor 201 is turned off, and the smoke exhaust fan is no longer running.

[0025] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-temperature fire smoke exhaust fan capable of rapid cooling, comprising a support frame (1), a shaft protection component (4) and a cooling component (6), characterized in that: A smoke exhaust assembly (2) is arranged at the center of the inner side of the support frame (1), and the shaft protection assembly (4) is located on the inner side of the support frame (1), and the shaft protection assembly (4) comprises a dust cover (401), a bearing seat (402) and an air guide plate (403), and the dust cover (401) is arranged on the outer side of the smoke exhaust assembly (2), the bearing seat (402) is fixed on both the left and right sides of the dust cover (401), and the air guide plate (403) is fixed on the left end of the bearing seat (402), and the cooling assembly (401) is provided on the inner side of the support frame (1). The component (6) is located outside the rotating shaft protection component (4), and the cooling component (6) comprises a partition (601), a storage cavity (602), an outlet (603) and a filling port (604); the partition (601) is coaxially fixed to the inner wall of the support frame (1), and a storage cavity (602) is provided between the partition (601) and the support frame (1); a filling port (604) is provided through the upper end of the support frame (1), and four groups of outlets (603) are provided through the inner side of the partition (601).

2. A high-temperature fire smoke exhaust fan capable of rapid cooling according to claim 1, characterized in that: The smoke exhaust assembly (2) comprises a drive motor (201), a bevel gear set (202), a connecting shaft (203) and fan blades (204); the drive motor (201) is provided through a side wall of the support frame (1); the output end of the drive motor (201) is connected to the bevel gear set (202); the output end of the bevel gear set (202) is interference-connected to the connecting shaft (203); and two groups of fan blades (204) are connected to the left and right sides of the connecting shaft (203).

3. A high-temperature fire smoke exhaust fan capable of rapid cooling according to claim 2, characterized in that: The driving motor (201) forms a rotating structure with the two sets of fan blades (204) via the connecting shaft (203), and the connecting shaft (203) is located on the inner side of the dust cover (401).

4. A high-temperature fire smoke exhaust fan capable of rapid cooling according to claim 3, characterized in that: The air guide plate (403) is in a conical shape, and the right diameter of the air guide plate (403) is greater than the diameter of the dust cover (401).

5. A high-temperature fire smoke exhaust fan capable of rapid cooling according to claim 4, characterized in that: An air inlet (3) is provided on the left side of the air guide plate (403), and an air outlet (5) is provided on the right side of the rotating shaft protection component (4).

6. A high-temperature fire smoke exhaust fan capable of rapid cooling according to claim 1, characterized in that: A sealing cover (632) is provided on the outside of the outlet (603), and a memory metal wire (631) is provided through the edge of the sealing cover (632).

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