Special long high-temperature-resistant smoke exhaust fan for large space

Abstract

The utility model discloses a special superlong high temperature resistant smoke exhaust fan for large space, which comprises a shell, wherein the shell is a high temperature resistant shell; a motor is installed in the shell, and a high temperature resistant insulation layer is arranged outside the motor; an impeller is a high temperature resistant impeller, which comprises a hub and blades, the hub is installed on an output shaft of the motor, the blades are evenly arranged along the outer circumferential side of the hub, and the ratio of the outer diameter D of the blades to the outer diameter d of the hub is 1.2-1.5. The shell and the impeller are made of high temperature resistant materials, and can continuously operate for more than 30 minutes under a high temperature environment of 280 DEG C. The motor is externally provided with a high temperature resistant insulation material and is equipped with a cooling fan, so that the stable operation of the motor under high temperature or high load working conditions is ensured, the service life is prolonged, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and mainly to a special ultra-long high-temperature resistant smoke exhaust fan for large spaces. Background Technology

[0002] Smoke exhaust fans are widely used in large public buildings, underground spaces, and industrial buildings, such as subways, tunnels, and underground parking garages.

[0003] As essential fire-fighting equipment, smoke exhaust fans are indispensable. However, existing axial flow smoke exhaust fans have poor high-temperature resistance. In the event of a fire, the external temperature has little effect on the fan, making it impossible to guarantee its normal operation. Furthermore, existing axial flow smoke exhaust fans also suffer from low air volume, resulting in slow smoke extraction. Therefore, those skilled in the art have developed a special ultra-long high-temperature resistant smoke exhaust fan for large spaces to solve the problems mentioned in the background. Utility Model Content

[0004] This utility model aims to solve some problems existing in the prior art. Therefore, the purpose of this utility model is to propose an ultra-long, high-temperature resistant smoke exhaust fan specifically designed for large spaces.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] Large-space dedicated extra-long high-temperature resistant smoke exhaust fan, including:

[0007] The housing is a high-temperature resistant housing;

[0008] An electric motor, which is installed in a housing and has a high-temperature resistant insulating layer on its exterior;

[0009] The impeller is a high-temperature resistant impeller. The impeller includes a hub and blades. The hub is mounted on the output shaft of the motor. There are multiple blades, which are evenly arranged along the outer periphery of the hub. The ratio of the outer diameter D of the blades to the outer diameter d of the hub is 1.2 to 1.5.

[0010] Furthermore, it also includes a cooling fan, which is mounted on the side wall of the housing or on the rear support of the housing.

[0011] Furthermore, the hub has a frustum-shaped structure.

[0012] Furthermore, the ratio of the outer diameter D of the blade to the minimum outer diameter d1 of the hub is 1.5, and the ratio of the outer diameter D of the blade to the maximum outer diameter d2 of the hub is 1.2.

[0013] Furthermore, the number of blades is 8.

[0014] Furthermore, it also includes a support platform, which is installed in the housing, and the motor is installed on the support platform.

[0015] Furthermore, the shell has a cylindrical structure.

[0016] Furthermore, it also includes a base, which has a flat bottom structure and a recessed cavity on top that is adapted to fit the cylindrical shell, and the shell is installed in the recessed cavity of the base.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The casing and impeller are made of high-temperature resistant materials, enabling them to operate continuously for more than 30 minutes in a high-temperature environment of 280℃. The motor is equipped with high-temperature resistant insulation material and a cooling fan to ensure stable operation of the motor under high-temperature or high-load conditions, extend its service life, and improve efficiency.

[0019] The impeller structure has been optimized, the hub ratio has been increased, and the chord length has been enlarged to improve airflow and air pressure, which can quickly expel dense smoke and maintain a clear escape route.

[0020] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a partial sectional view of the present invention from a side view. Figure 1 ;

[0022] Figure 2 This is a partial sectional view of the present invention from a side view. Figure 2 ;

[0023] Figure 3 This is the front view of the present utility model.

[0024] Figure label:

[0025] 1. Shell;

[0026] 2. Electric motor;

[0027] 3. Impeller, 301. Hub, 302. Blades;

[0028] 4. Cooling fan;

[0029] 5. Support platform;

[0030] 6. Base. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0033] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0034] Please refer to the following for details. Figure 1-3 A large-space-specific ultra-long high-temperature resistant smoke exhaust fan includes a housing 1, a motor 2, an impeller 3, and a cooling fan 4. The housing 1 is a high-temperature resistant housing; the motor 2 is installed inside the housing 1, and the motor 2 is externally covered with a high-temperature resistant insulation layer; the impeller 3 is a high-temperature resistant impeller, which includes a hub 301 and blades 302, with the hub 301 mounted on the output shaft of the motor 2.

[0035] Based on the above technical means, the housing 1 and impeller 3 are made of high temperature resistant materials and can run continuously for more than 30 minutes in a high temperature environment of 280℃; the motor 2 is made of high temperature resistant insulating materials and is equipped with a cooling fan 4 to ensure stable operation of the motor 2 under high temperature or high load conditions, extend its service life and improve efficiency.

[0036] In this embodiment, the housing 1 and the impeller 3 are made of stainless steel or alloy steel.

[0037] In this embodiment, the high-temperature resistant insulating layer is mica, polyimide film, or ceramic coating.

[0038] It should be noted that the exterior of motor 2 needs to be covered with a high-temperature resistant insulation layer as much as possible.

[0039] Please refer to the following for details. Figure 1 The cooling fan 4 is mounted on the side wall of the housing 1 and blows air onto the motor 2. When the cooling fan 4 is mounted on the side wall of the housing 1, an arc-shaped base plate needs to be designed for fixing the cooling fan 4.

[0040] Please refer to the following for details. Figure 2 The cooling fan 4 is mounted on the rear bracket of the housing 1 and blows air onto the motor 2.

[0041] There are multiple blades 302, which are evenly arranged along the outer periphery of the hub 301. The ratio of the outer diameter D of the blade 302 to the outer diameter d of the hub 301 is 1.2 to 1.5. The hub 301 has a frustum-shaped structure. The ratio of the outer diameter D of the blade 302 to the minimum outer diameter d1 of the hub 301 is 1.5, and the ratio of the outer diameter D of the blade 302 to the maximum outer diameter d2 of the hub 301 is 1.2. There are 8 blades 302.

[0042] Based on the aforementioned technical methods, the impeller 3 structure was optimized, increasing the hub ratio 301 and thus increasing the chord length, thereby improving airflow and air pressure. This allows for the rapid removal of dense smoke and maintains a clear escape route. This impeller 3 structure has higher strength and is suitable for high-speed applications with speeds >2800 rpm.

[0043] The large-space-specific ultra-long high-temperature resistant smoke exhaust fan also includes a support platform 5, which is fixedly installed in the housing 1, and the motor 2 is fixedly installed on the support platform 5.

[0044] This is a large-space-specific ultra-long high-temperature resistant smoke exhaust fan. The housing 1 has a cylindrical structure. Since the cylindrical housing 1 is inconvenient to install, a matching base 6 is required. The base 6 has a flat bottom structure and a recessed cavity on top that matches the cylindrical housing 1. The housing 1 is installed in the recessed cavity of the base 6.

[0045] It should be noted that all standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A large-space-specific ultra-long-lasting high-temperature resistant smoke exhaust fan, characterized in that: include: The housing is a high-temperature resistant housing; An electric motor, which is installed in a housing and has a high-temperature resistant insulating layer on its exterior; The impeller is a high-temperature resistant impeller. The impeller includes a hub and blades. The hub is mounted on the output shaft of the motor. There are multiple blades, which are evenly arranged along the outer periphery of the hub. The ratio of the outer diameter D of the blades to the outer diameter d of the hub is 1.2 to 1.

5.

2. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 1, characterized in that, It also includes a cooling fan, which is mounted on the side wall of the housing or on the rear support of the housing.

3. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 1, characterized in that, The wheel hub has a frustum-shaped structure.

4. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 3, characterized in that, The ratio of the outer diameter D of the blade to the minimum outer diameter d1 of the hub is 1.5, and the ratio of the outer diameter D of the blade to the maximum outer diameter d2 of the hub is 1.

2.

5. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 4, characterized in that, The number of blades is 8.

6. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 1, characterized in that, It also includes a support platform, which is installed in the housing, and the motor is installed on the support platform.

7. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 1, characterized in that, The shell has a cylindrical structure.

8. The large-space-specific ultra-long high-temperature resistant smoke exhaust fan according to claim 7, characterized in that, It also includes a base, which has a flat bottom structure and a recess on the top that is adapted to fit the cylindrical shell, and the shell is installed in the recess of the base.

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