Energy-saving cooling tower fan direct drive device

Abstract

The utility model relates to the technical field of energy-saving cooling towers, and discloses an energy-saving cooling tower fan direct drive device which comprises a protective shell and a drive motor provided with an inner cavity, heat dissipation holes are formed in the periphery of the back face of the protective shell, and dustproof plates are additionally arranged in the protective shell; the heat exchange grooves are formed in the periphery of the inner wall of the protective shell, a semicircular groove is formed between the corresponding ends of every two adjacent heat exchange grooves, a calandria and an inlet pipe are additionally arranged on the lower portion and the upper portion of the back face of the protective shell respectively and are connected with the corresponding heat exchange grooves in a communicating mode, and the outer ends of the calandria and the outer ends of the inlet pipes are both communicated with connectors. According to the energy-saving cooling tower fan direct-drive device, the external guide pipe is communicated with the corresponding connectors of the calandria and the inlet pipe, a heat exchange medium (such as liquid or gas) is injected into the heat exchange groove to absorb heat generated by the drive motor, and the heat exchange medium absorbing the heat is discharged through the calandria. And damage caused by too high temperature of the driving motor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving cooling towers, in particular to an energy-saving cooling tower fan direct-driving device. Background Art

[0002] Energy-saving cooling towers, also known as new cooling towers, are based on the use of turbines to replace traditional motors, reducers, drive shafts and other components, thereby making full use of the excess kinetic energy wasted in the circulation system, converting it into mechanical energy to directly drive the fan to rotate, and achieving 100% energy saving in the cooling tower. Energy-saving cooling tower fans are an important part of cooling tower equipment, and are designed to achieve efficient cooling while reducing energy consumption. Energy-saving cooling tower fans are widely used in industries such as steel, electricity, and chemicals, as well as in air-conditioning systems in buildings. Energy-saving cooling tower fans require direct drive devices when in use.

[0003] Common energy-saving cooling tower fan direct drive devices are usually composed of motors, bearings, fan shafts, and fixed and supporting structures. The motor, as a power source, is directly installed on the fan shaft and is firmly connected to the fan shaft through the bearing, so that the motor directly drives the fan to rotate through the fan shaft. This is a common energy-saving cooling tower fan direct drive device and its use method. In traditional energy-saving cooling tower fan direct drive devices, the fan rotates driven by the motor, which speeds up the flow of air, and the dust in the air will settle on the surface of the motor, causing the motor to fail to operate normally and even reduce the service life of the motor. Some energy-saving cooling tower fan direct drive devices are achieved by covering the outside of the motor with an outer shell, and fixing the outer shell to the inside of the fan cover of the fan through a connecting structure (such as a connecting rod and bolts). However, in this way, since the outer shell is usually of closed design, the heat generated by the motor cannot be dissipated in time, causing the motor to malfunction. At the same time, the motor needs to be repaired or replaced after long-term use, and the motor is connected to the fan cover through a connecting structure (such as a connecting rod and bolts, etc.), which makes it difficult to disassemble and assemble the motor. Therefore, an energy-saving cooling tower fan direct drive device is proposed. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an energy-saving cooling tower fan direct drive device to solve the technical problems that the outer shell affects the heat dissipation of the motor and is inconvenient to disassemble and assemble.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving cooling tower fan direct drive device, comprising:

[0006] A fan cover, and a fan arranged at the center of the front of the fan cover, and a protective shell is added at the center of the back of the fan cover;

[0007] The driving motor is arranged in the inner cavity of the protective shell and is coaxially connected with the fan. The back of the protective shell is provided with heat dissipation holes all around, and dustproof plates are added inside the heat dissipation holes.

[0008] The heat exchange groove is arranged around the inner wall of the protective shell, and a semicircular groove is opened between the corresponding ends of adjacent heat exchange grooves. The lower part and the upper part of the back of the protective shell are respectively provided with a discharge pipe and an inlet pipe, which are connected to the corresponding heat exchange grooves, and the outer ends of the discharge pipe and the inlet pipe are connected with connectors. When the fan is driven by the driving motor on the protective shell to rotate on the fan cover, the heat can be dissipated through the heat dissipation holes when the driving motor is not in use, and the dust in the air can be prevented from entering through the dustproof plate. When the driving motor is in use, the external conduit is first connected with the corresponding connectors of the discharge pipe and the inlet pipe, and the heat exchange medium (such as liquid or gas) injected into the heat exchange groove is absorbed to absorb the heat generated by the driving motor, and the heat exchange medium after absorbing the heat is discharged through the discharge pipe. On the one hand, different ways of heat dissipation can be performed according to the switch of the driving motor, which can play a role in saving heat exchange medium; on the other hand, the heat exchange medium can be used in a flowing manner to avoid the phenomenon that the heat exchange medium cannot be discharged in time after absorbing a certain amount of heat, resulting in the phenomenon that the driving motor temperature is too high and damaged.

[0009] Preferably, the outer surface of the protective shell is provided with connecting seats at corresponding positions of the centers around the outer surface of the protective shell, and the top center of the connecting seats is provided with positioning grooves vertically. The protective shell is connected to the corresponding structure through the positioning grooves on the connecting seats.

[0010] Preferably, the front and rear ends of the top of the positioning groove of the connection seat are both rotatably connected to the limit plate, and part of the limit plate is rotated to the corresponding front and rear ends of the top of the positioning groove. The limit plate can fit tightly with the top of the structure corresponding to the positioning groove to ensure the stability of the connection between the corresponding structure and the connection seat.

[0011] Preferably, telescopic rods are vertically installed at the central positions of the inner wall of the fan cover, and positioning blocks are installed at the bottom of the telescopic ends of the telescopic rods and correspond to the positioning grooves. The telescopic ends of the telescopic rods are pulled down to drive the positioning blocks to be inserted into the positioning grooves of the connecting seat.

[0012] Preferably, the center positions of the front and rear ends of the top of the positioning block are longitudinally provided with limiting grooves, and the limiting grooves correspond to the limiting plates on the corresponding sides. After the positioning block and the positioning grooves are tightly fitted, the limiting plates are rotated to align the limiting plates with the limiting grooves.

[0013] Preferably, a pressure plate is installed on the top of the telescopic end of the inner cavity of the telescopic rod, and a reset spring is sleeved on the upper surface of the telescopic rod, and is tightly fitted with the bottom of the pressure plate and the bottom of the inner cavity of the telescopic rod. Under the action of the pressure plate and the reset spring in the contracted state, the telescopic end of the telescopic rod drives the positioning block to rise and reset, so that the limit groove and the limit plate are tightly fitted, on the one hand, ensuring the stability of the fan cover, the drive motor and the protective shell; on the other hand, it can make it easy to disassemble and repair or replace the protective shell on the fan cover.

[0014] Compared with the prior art, the utility model provides an energy-saving cooling tower fan direct drive device, which has the following beneficial effects:

[0015] The energy-saving cooling tower fan direct drive device drives the fan to rotate on the fan cover through the driving motor on the protective shell. When the driving motor is not in use, the heat can be dissipated through the heat dissipation holes, and the dust in the air can be prevented from entering through the dustproof plate. When the driving motor is in use, the external conduit is first connected with the corresponding connector of the discharge pipe and the inlet pipe, and the heat exchange medium (such as liquid or gas) is injected into the heat exchange groove to absorb the heat generated by the driving motor, and the heat exchange medium after absorbing the heat is discharged through the discharge pipe. In this way, on the one hand, different ways of heat dissipation can be performed according to the switch of the driving motor, which can play a role in saving heat exchange medium; on the other hand, the heat exchange medium can be used in a flowing manner, so as to avoid the phenomenon that the heat exchange medium cannot be discharged in time after absorbing a certain amount of heat, resulting in excessive temperature of the driving motor and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fan cover of the utility model in a left side view after a cutaway view;

[0018] Figure 3 This is a schematic diagram of the left side structure of the protective shell separation of the utility model;

[0019] Figure 4 It is a schematic diagram of the sectional structure of the telescopic rod and the connecting seat separated from each other in the utility model.

[0020] In the figure: 1. fan cover; 2. fan; 3. protective shell; 4. drive motor; 5. heat exchange groove; 6. semicircular groove; 7. exhaust pipe; 8. inlet pipe; 9. connector; 10. dustproof plate; 11. connecting seat; 12. positioning groove; 13. limit plate; 14. telescopic rod; 15. positioning block; 16. limit groove; 17. pressure plate; 18. reset spring. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides a technical solution, an energy-saving cooling tower fan direct drive device, comprising: Figure 1 , Figure 2 , a fan cover 1, and a fan 2 arranged at the center of the front of the fan cover 1, and a protective shell 3 is additionally provided at the center of the back of the fan cover 1;

[0023] See also Figure 3 The drive motor 4 is arranged in the inner cavity of the protective shell 3 and is coaxially connected to the fan 2. The back of the protective shell 3 is provided with heat dissipation holes all around, and dustproof plates 10 are added inside the heat dissipation holes.

[0024] The heat exchange grooves 5 are arranged around the inner wall of the protective shell 3, and a semicircular groove 6 is opened between the corresponding ends of adjacent heat exchange grooves 5. The lower part and the upper back of the protective shell 3 are respectively provided with a discharge pipe 7 and an inlet pipe 8, which are communicated with the corresponding heat exchange grooves 5, and the outer ends of the discharge pipe 7 and the inlet pipe 8 are connected with a connector 9. When the fan 2 is driven by the driving motor 4 on the protective shell 3 to rotate on the fan cover 1, when the driving motor 4 is not in use, the heat can be dissipated through the heat dissipation holes, and the dust in the air can be prevented from entering through the dustproof plate 10. When the driving motor 4 is in use, the external conduit is first connected with the corresponding connector 9 of the discharge pipe 7 and the inlet pipe 8, and the heat exchange medium (such as liquid or gas) is injected into the heat exchange groove 5 to absorb the heat generated by the driving motor 4, and the heat exchange medium after absorbing the heat is discharged through the discharge pipe 7. On the one hand, different methods of heat dissipation can be performed according to the switch of the driving motor 4, which can play a role in saving heat exchange medium; on the other hand, the heat exchange medium can be used in a flowing manner to avoid the heat exchange medium absorbing a certain amount of heat and failing to be discharged in time, resulting in the phenomenon that the driving motor 4 is damaged due to excessive temperature.

[0025] See also Figure 3 , the outer surface of the protective shell 3 is provided with a connection seat 11 at the corresponding positions of the center around the periphery, and a positioning groove 12 is vertically opened at the center position of the top of the connection seat 11. The protective shell 3 is connected to the corresponding structure through the positioning groove 12 on the connection seat 11. The front and rear ends of the top of the positioning groove 12 of the connection seat 11 are both rotatably connected to the limit plate 13, and part of the limit plate 13 is rotated to the corresponding positions of the front and rear ends of the top of the positioning groove 12. The limit plate 13 can fit tightly with the top of the structure corresponding to the positioning groove 12 to ensure the stability of the connection between the corresponding structure and the connection seat 11.

[0026] See also Figure 4 , telescopic rods 14 are vertically installed at the center positions around the inner wall of the fan cover 1, and positioning blocks 15 are installed at the bottom of the telescopic ends of the telescopic rods 14, and correspond to the positioning grooves 12. The telescopic end of the telescopic rod 14 is pulled down to drive the positioning block 15 to be inserted into the positioning groove 12 of the connecting seat 11. Limiting grooves 16 are longitudinally opened at the center positions of the front and rear ends of the top of the positioning block 15, and the limiting grooves 16 correspond to the limiting plates 13 on the corresponding sides. After the positioning block 15 is tightly fitted with the positioning groove 12, the limiting plate 13 is rotated to align the limiting plate 13 with the limiting groove 16. A pressing plate 17 is installed on the top of the telescopic end of the inner cavity of the telescopic rod 14, and a reset spring 18 is sleeved on the upper surface of the telescopic rod 14, and it is tightly fitted with the bottom of the pressing plate 17 and the bottom of the inner cavity of the telescopic rod 14. Under the action of the pressure plate 17 and the return spring 18 in the contracted state, the telescopic end of the telescopic rod 14 drives the positioning block 15 to rise and reset, so that the limit groove 16 and the limit plate 13 are tightly fitted. On the one hand, the stability of the fan cover 1, the drive motor 4 and the protective shell 3 is guaranteed; on the other hand, the protective shell 3 can be easily disassembled and repaired on the fan cover 1 or replaced.

[0027] This solution: When the fan 2 is driven to rotate on the fan cover 1 by the driving motor 4 on the protective shell 3, the driving motor 4 can dissipate heat through the heat dissipation holes when not in use, and prevent dust from entering the air through the dustproof plate 10. When the driving motor 4 is in use, the external conduit is first connected to the corresponding connector 9 of the discharge pipe 7 and the inlet pipe 8, and the heat exchange medium (such as liquid or gas) is injected into the heat exchange groove 5 to absorb the heat generated by the driving motor 4, and the heat exchange medium after absorbing the heat is discharged through the discharge pipe 7. The telescopic end of the telescopic rod 14 is pulled down to drive the positioning block 15 to insert into the positioning groove 12 of the connecting seat 11. After the positioning block 15 and the positioning groove 12 are tightly fitted, the limit plate 13 is rotated to align the limit plate 13 with the limit groove 16. Under the action of the pressure plate 17 and the reset spring 18 in the contracted state, the telescopic end of the telescopic rod 14 drives the positioning block 15 to rise and reset, so that the limit groove 16 and the limit plate 13 are tightly fitted.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving cooling tower fan direct drive device, characterized in that: include: A fan cover (1), and a fan (2) arranged at the center position of the front side of the fan cover (1), and a protective shell (3) is additionally provided at the center position of the back side of the fan cover (1); The drive motor (4) is arranged in the inner cavity of the protective shell (3) and is coaxially connected to the fan (2). The back of the protective shell (3) is provided with heat dissipation holes all around, and dustproof plates (10) are added inside the heat dissipation holes. The heat exchange grooves (5) are arranged around the inner wall of the protective shell (3), and a semicircular groove (6) is opened between the corresponding ends of adjacent heat exchange grooves (5). The lower part and the upper part of the back of the protective shell (3) are respectively provided with a discharge pipe (7) and an inlet pipe (8), which are communicated with the corresponding heat exchange grooves (5), and the outer ends of the discharge pipe (7) and the inlet pipe (8) are both connected with a connector (9).

2. The energy-saving cooling tower fan direct drive device according to claim 1 is characterized in that: Connecting seats (11) are installed at corresponding positions of the centers of the four sides of the outer surface of the protective shell (3), and positioning grooves (12) are vertically opened at the center positions of the tops of the connecting seats (11).

3. The energy-saving cooling tower fan direct drive device according to claim 2 is characterized in that: The front and rear ends of the top of the positioning groove (12) of the connection seat (11) are both rotatably connected to the limiting plate (13), and part of the limiting plate (13) is rotated to the corresponding positions of the front and rear ends of the top of the positioning groove (12).

4. The energy-saving cooling tower fan direct drive device according to claim 3 is characterized in that: Telescopic rods (14) are vertically mounted at the central positions of the four sides of the inner wall of the fan cover (1), and positioning blocks (15) are mounted at the bottom of the telescopic ends of the telescopic rods (14) and correspond to the positioning grooves (12).

5. The energy-saving cooling tower fan direct drive device according to claim 4 is characterized in that: Limiting grooves (16) are longitudinally provided at the center positions of the front and rear ends of the top of the positioning block (15), and the limiting grooves (16) correspond to the limiting plates (13) on the corresponding sides.

6. The energy-saving cooling tower fan direct drive device according to claim 4 is characterized in that: A pressure plate (17) is installed at the top of the telescopic end of the inner cavity of the telescopic rod (14), and a return spring (18) is sleeved on the upper surface of the telescopic rod (14) and fits tightly between the bottom of the pressure plate (17) and the bottom of the inner cavity of the telescopic rod (14).

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