CN221664954U - High-resistant Wen Zhilian centrifugal ventilator - Google Patents

Abstract

The utility model provides a high-resistant Wen Zhilian centrifugal ventilator, which relates to the technical field of centrifugal ventilators and comprises a first outer shell, wherein an impeller is arranged in the first outer shell, an air inlet and an air outlet are formed in the first outer shell, a second outer shell and an inner shell are fixedly connected to the rear side of the first outer shell, the inner shell is positioned on the inner side of the second outer shell, a double-shaft motor is arranged in the inner shell, an output shaft on the front side of the double-shaft motor is fixedly connected with the impeller, and a metal roller is sleeved on the outer side of the double-shaft motor. According to the utility model, the double-shaft motor is separated from the outside by arranging the second outer shell and the inner shell to cover the double-shaft motor, and the roller is sleeved on the double-shaft motor, so that the roller rolls through cold water to directly dissipate heat of the double-shaft motor, meanwhile, cold air in the first outer shell is led between the second outer shell and the inner shell through the connecting pipe, and the cold air flows outwards through the rotation of the fan blades, so that heat transferred from the outside and heat in water vapor are absorbed and brought out of the device, and the influence of high-temperature environment and accumulation of internal heat are avoided.

Description

A high temperature resistant direct-connected centrifugal fan

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a high temperature resistant direct-connected centrifugal fan.

Background Art

Centrifugal fans are a type of impeller machinery, widely used in various fields such as energy, environment, aviation, etc., and are one of the main energy-consuming equipment in industrial and agricultural production. Centrifugal fans are one of the four major parts in the dust removal and ventilation system. They are a relatively precise operating machine that relies on the rotation of the impeller to form negative pressure inside the fan, sucking in external gas and discharging it from the fan through the impeller flow channel and volute.

When the existing centrifugal fan is used in a high temperature environment, when the external heat is higher than that inside the device, the heat will be transferred inward to generate high temperature inside the device. In addition, the motor of the centrifugal fan will generate a large amount of heat after working for a long time. The accumulation of these heat in the device will also generate high temperature. Therefore, the existing centrifugal fan will install a heat sink on the outer casing or a cooling fan in the device to reduce the temperature of the environment in which the motor is located to improve the high temperature resistance of the fan.

The prior art publication number is CN219953748U, which is a high-temperature resistant centrifugal fan. The air in the device is cooled by cooling water and a heat-conducting copper tube, and the cold air is driven to flow toward the motor for heat dissipation through a heat dissipation wheel. However, when the device is in use, the heat-conducting copper tube is directly exposed to the outside world, so that the outside heat will be transferred to the heat-conducting copper tube, affecting the cooling of the air in the device. When the heat dissipation wheel blows air, the airflow enters the casing from the outside, which easily brings the outside heat into the device, so that the heat dissipation effect of the device is easily affected by the external high temperature environment, resulting in unsatisfactory heat dissipation, and then affecting the heat resistance performance.

Utility Model Content

The purpose of the utility model is to solve the problem that the heat-conducting copper tube is directly exposed to the outside world in the prior art, so that the outside heat will be transferred to the heat-conducting copper tube, affecting the cooling of the air in the device, and when the heat dissipation wheel blows air, the air flow enters the casing from the outside, which is easy to bring the outside heat into the device, so that the heat dissipation effect of the device is easily affected by the external high temperature environment, resulting in unsatisfactory heat dissipation. A high-temperature resistant direct-connected centrifugal fan is provided.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-temperature resistant direct-connected centrifugal fan, comprising a first outer shell, a mounting plate fixedly connected to the bottom of the first outer shell, an impeller arranged in the first outer shell, an air inlet opened on the front side of the first outer shell, and an air outlet arranged on the top of the first outer shell, a second outer shell and an inner shell fixedly connected to the rear side of the first outer shell, and the inner shell is located on the inner side of the second outer shell, a fixing plate fixedly connected to the inner shell, a dual-axis motor fixedly connected to the top of the fixing plate, the front output shaft of the dual-axis motor extends into the first outer shell and is fixedly connected to the impeller, a metal roller is arranged in the inner shell, and the metal roller is sleeved on the outside of the dual-axis motor, the metal roller is drivingly connected to the output shaft of the dual-axis motor, and the inner cavity of the inner shell located below the fixing plate is filled with cold water.

As a preferred embodiment, the fixing plate is located inside the drum, and both front and rear sides of the fixing plate extend from the drum and are fixedly connected to the first outer shell and the inner shell respectively.

As a preferred embodiment, two semicircular baffles are fixedly connected to the top of the fixed plate, and the two baffles are distributed on the front and rear sides of the dual-axis motor. The output shaft of the dual-axis motor is movably connected to the two baffles. A sealing strip is fixedly connected to the top of the baffle, and the sealing strip is in contact with the inner wall of the drum.

As a preferred embodiment, a plurality of tooth blocks are fixedly connected to the inner wall of the metal drum, and the plurality of tooth blocks are distributed in a circular array along the inner wall of the metal drum. Two mutually meshing gears are provided on the front side of the dual-axis motor, the upper gear is movably connected to the adjacent baffle and meshes with the adjacent tooth blocks, and the lower gear is fixedly connected to the output shaft of the dual-axis motor.

As a preferred embodiment, a plurality of heat conducting plates are fixedly connected to the inner wall of the metal drum, the plurality of heat conducting plates are arranged along the axial direction of the metal drum, and the plurality of heat conducting plates are distributed in a ring array along the inner wall of the metal drum.

As a preferred embodiment, three rotating rods are provided in the inner shell, and the three rotating rods are distributed in a triangular shape on the outside of the metal drum, and pulleys are fixedly connected to the three rotating rods near both ends, and both ends of the three rotating rods are movably connected to the inner shell.

As a preferred embodiment, the rear output shaft of the dual-axis motor extends through the baffle and the inner shell to the second outer shell, and the rear output shaft is fixedly connected to a fan blade, a ventilation hole is opened on the rear side of the second outer shell, and a connecting pipe is fixedly connected between the first outer shell and the second outer shell.

Compared with the prior art, the advantages and positive effects of the utility model are as follows: the utility model provides a second outer shell and an inner shell to cover the dual-axis motor, thereby isolating the dual-axis motor from the outside world, and sets a drum between the dual-axis motor and the inner shell, so that heat is absorbed by the drum, and the dual-axis motor drives the drum to rotate, so that the drum passes through cold water to directly dissipate the heat of the dual-axis motor, and at the same time, the cold air in the first outer shell is introduced into between the second outer shell and the inner shell through the connecting pipe to form an insulating layer, and the cold air flows outward by rotating the fan blades, thereby absorbing the heat transmitted from the outside world and the heat in the water vapor and taking them out of the device, thereby avoiding the influence of the external high temperature environment on the device and avoiding heat accumulation in the device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the external structure of a high temperature resistant direct-connected centrifugal fan provided by the utility model.

FIG. 2 is a schematic diagram of the internal structure of a high temperature resistant direct-connected centrifugal fan provided by the present invention.

FIG3 is a schematic diagram of the internal structure of a drum of a high temperature resistant direct-connected centrifugal fan provided by the utility model.

FIG4 is a schematic diagram of the second outer shell and inner shell structure of a high temperature resistant direct-connected centrifugal fan provided by the utility model.

Legend:

1. First outer shell; 2. Second outer shell; 3. Connecting pipe; 4. Impeller; 5. Inner shell; 6. Fan blades; 7. Dual-axis motor; 8. Drum; 9. Heat conduction plate; 10. Baffle; 11. Gear; 12. Fixed plate; 13. Rotating rod; 14. Pulley.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

As shown in Figures 1-4, the utility model provides a technical solution: a high-temperature resistant direct-connected centrifugal fan, comprising a first shell 1, a mounting plate fixedly connected to the bottom of the first shell 1, an impeller 4 is arranged inside the first shell 1, an air inlet is opened on the front side of the first shell 1, and an air outlet is arranged on the top of the first shell 1, a second shell 2 and an inner shell 5 are fixedly connected to the rear side of the first shell 1, and the inner shell 5 is located on the inner side of the second shell 2, connecting blocks are fixedly connected between the front and rear sides of the inner shell 5 and the second shell 2, the rear output shaft of the dual-axis motor 7 passes through the baffle 10 and the inner shell 5 and extends into the second shell 2, and a fan blade 6 is fixedly connected to the rear output shaft, a vent is opened on the rear side of the second shell 2, and a connecting pipe 3 is fixedly connected between the first shell 1 and the second shell 2 to connect the inner cavity of the first shell 1 and the second outer cavity The inner cavity of the shell 2 is formed so that the cold air in the first outer shell 1 is introduced into the space between the second outer shell 2 and the inner shell 5, and the heat is absorbed by the cold air to prevent the external heat from entering the device, and the internal heat is taken out of the device, thereby improving the heat resistance. A fixing plate 12 is fixedly connected to the inner shell 5, and a dual-axis motor 7 is fixedly connected to the top of the fixing plate 12. The front output shaft of the dual-axis motor 7 extends into the first outer shell 1 and is fixedly connected to the impeller 4. A metal roller 8 is provided in the inner shell 5, and the metal roller 8 is sleeved on the outside of the dual-axis motor 7. The fixing plate 12 is located on the inner side of the roller 8, and the front and rear sides of the fixing plate 12 are extended from the roller 8, and are respectively fixedly connected to the first outer shell 1 and the inner shell 5. Two semicircular baffles 10 are fixedly connected to the top of the fixing plate 12, and the two baffles 10 are distributed on the front and rear sides of the dual-axis motor 7. The output shaft is movably connected to the two baffles 10, and a sealing strip is fixedly connected to the top of the baffle 10, and the sealing strip is in contact with the inner wall of the drum 8. The dual-axis motor 7 is supported by the fixed plate 12, and the space where the dual-axis motor 7 is located is sealed by the baffle 10 to prevent water vapor from entering the dual-axis motor 7 and affecting the operation of the equipment. The metal drum 8 is transmission-connected to the output shaft of the dual-axis motor 7, and a plurality of gear blocks are fixedly connected to the inner wall of the metal drum 8. The plurality of gear blocks are distributed in a circular array along the inner wall of the metal drum 8. Two mutually meshing gears 11 are provided on the front side of the dual-axis motor 7. The upper gear 11 is movably connected to the adjacent baffle 10 and meshes with the adjacent gear blocks. The lower gear 11 is fixedly connected to the output shaft of the dual-axis motor 7, and the drum 8 is driven to rotate through the dual-axis motor 7 through the gear 11 and the gear block. The inner cavity of the shell 5 is located below the fixed plate 12 and is filled with cold water. A number of heat conducting plates 9 are fixedly connected to the inner wall of the metal drum 8. The heat conducting plates 9 are all arranged along the axial direction of the metal drum 8, and the heat conducting plates 9 are distributed in a ring array along the inner wall of the metal drum 8, thereby increasing the contact surface between the drum 8 and the internal hot air and transferring the heat to the drum 8 quickly. Three rotating rods 13 are arranged in the inner shell 5. The three rotating rods 13 are distributed in a triangular shape on the outside of the metal drum 8, and pulleys 14 are fixedly connected to the three rotating rods 13 near both ends. Both ends of the three rotating rods 13 are movably connected to the inner shell 5 to support the drum 8. At the same time, the pulleys 14 distributed in a triangular shape restrict the drum 8 to prevent it from moving and causing the tooth block to disengage from the gear 11, and the pulley 14 can make the drum 8 rotate smoothly.

Working principle: When in use, connect the air outlet of the device to the ventilation duct, turn on the power, start the dual-axis motor 7, and the dual-axis motor 7 drives the impeller 4 to rotate, thereby sending the external cold air into the ventilation duct. At the same time, part of the cold air enters between the second outer shell 2 and the inner shell 5 through the connecting pipe 3, thereby forming a heat absorption layer between the second outer shell 2 and the inner shell 5, absorbing the heat transferred from the outside to the second outer shell 2, and preventing the external heat from entering the inner shell 5. At the same time, the heat generated by the dual-axis motor 7 is transferred to the metal roller 8 through a number of heat conduction plates 9, and the dual-axis motor 7 drives the metal roller 8 to rotate through the gear 11 and the tooth block. As the metal roller 8 rotates , the drum 8 transfers heat to the cold water through the cold water, so that the drum 8 loses heat and cools down, and then the drum 8 absorbs heat again through the dual-axis motor 7, and the above process is repeated to cool down the dual-axis motor 7, and the cold water absorbs a large amount of heat and evaporates to form water vapor, which rises and contacts the top of the inner shell 5, and its heat is transferred to the cold air between the second outer shell 2 and the inner shell 5 through the top of the inner shell 5, so that the water vapor condenses into water and refluxes to continue to absorb heat. At this time, the rear output shaft of the dual-axis motor 7 drives the fan blades 6 to rotate, and the air that enters the second outer shell 2 and the inner shell 5 and absorbs a large amount of heat is guided out to the outside to avoid heat accumulation.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims (7)

1. The utility model provides a high Wen Zhilian centrifugal fan, includes first shell (1), first shell (1) bottom fixedly connected with mounting panel, and be equipped with impeller (4) in first shell (1), air intake has been seted up to first shell (1) front side, and first shell (1) top is provided with the air outlet, its characterized in that: first shell (1) rear side fixedly connected with second shell (2) and inner shell (5), and inner shell (5) are located second shell (2) inboard, fixedly connected with fixed plate (12) in inner shell (5), fixed plate (12) top fixedly connected with biax motor (7), biax motor (7) front side output shaft extends to in first shell (1) to with impeller (4) fixed connection, be equipped with metal drum (8) in inner shell (5), and metal drum (8) cover is in biax motor (7) outside, metal drum (8) are connected with biax motor (7) output shaft transmission, inner shell (5) inner chamber are located fixed plate (12) below department and are equipped with cold water.

2. A high-resistant Wen Zhilian centrifugal fan as set forth in claim 1, wherein: the fixed plate (12) is positioned at the inner side of the roller (8), and the front side and the rear side of the fixed plate (12) extend out of the roller (8) and are fixedly connected with the first outer shell (1) and the inner shell (5) respectively.

3. A high-resistant Wen Zhilian centrifugal fan as set forth in claim 1, wherein: two semicircular baffles (10) are fixedly connected to the top of the fixing plate (12), the two baffles (10) are distributed on the front side and the rear side of the double-shaft motor (7), an output shaft of the double-shaft motor (7) is movably connected with the two baffles (10), sealing strips are fixedly connected to the top of the baffles (10), and the sealing strips are attached to the inner wall of the roller (8).

4. A high-resistant Wen Zhilian centrifugal fan as set forth in claim 3, wherein: fixedly connected with a plurality of tooth piece on metal cylinder (8) inner wall, a plurality of tooth piece is annular array form distribution along metal cylinder (8) inner wall, biax motor (7) front side is equipped with two intermeshing's gear (11), and upper gear (11) and adjacent baffle (10) swing joint, and with adjacent tooth piece meshing, gear (11) and biax motor (7) output shaft fixed connection of below.

5. A high-resistant Wen Zhilian centrifugal fan as set forth in claim 1, wherein: the heat conducting device is characterized in that a plurality of heat conducting plates (9) are fixedly connected to the inner wall of the metal roller (8), the plurality of heat conducting plates (9) are axially arranged along the metal roller (8), and the plurality of heat conducting plates (9) are distributed in an annular array along the inner wall of the metal roller (8).

6. A high-resistant Wen Zhilian centrifugal fan as set forth in claim 1, wherein: three rotating rods (13) are arranged in the inner shell (5), the three rotating rods (13) are distributed on the outer side of the metal roller (8) in a triangular shape, pulleys (14) are fixedly connected to the positions, close to the two ends, of the three rotating rods (13), and the two ends of the three rotating rods (13) are movably connected with the inner shell (5).

7. A high-resistant Wen Zhilian centrifugal fan as set forth in claim 1, wherein: the rear output shaft of the double-shaft motor (7) penetrates through the baffle (10) and the inner shell (5) to extend into the second outer shell (2), the fan blades (6) are fixedly connected to the rear output shaft, a vent is formed in the rear side of the second outer shell (2), and the connecting pipe (3) is fixedly connected between the first outer shell (1) and the second outer shell (2).