Stepless speed change anti-explosion diagonal flow fan

Abstract

The utility model discloses a stepless speed change explosion-proof oblique flow fan, which comprises a fan cylinder device and a fan main body, the fan main body is arranged in the fan cylinder device, the fan main body comprises a main machine shell, fan blades, an explosion-proof variable frequency motor, a wiring component and an integrated control module, the explosion-proof variable frequency motor is arranged in the main machine shell, and the wiring component is arranged in the main machine shell. The explosion-proof variable frequency motor is arranged in the explosion-proof shell, the front end of the explosion-proof variable frequency motor is connected with the fan blades, the integrated control module is connected with the explosion-proof variable frequency motor and is in wireless connection with an external main control box, the integrated control module has a wireless signal receiving and transmitting function, and the main control box is in wireless connection with the integrated control modules of the oblique flow fans. And the corresponding explosion-proof variable frequency motors are controlled by the integrated control module, so that the centralized control of the main control box on the plurality of diagonal flow fans is realized. The draught fan is provided with the integrated control module, integrated control over the multiple draught fans can be achieved through the main control box, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a stepless speed-variable explosion-proof diagonal flow fan. Background Art

[0002] A diagonal flow fan is a fan between an axial flow fan and a centrifugal fan. The impeller of a diagonal flow fan allows the air to move both centrifugally and axially, and can be used for ventilation. It is generally used for indoor ventilation and temperature control in factories and buildings. It can be used as both input and exhaust gas.

[0003] When used in a factory, a large number of diagonal flow fans will be put into use depending on the scale of the factory. A large number of diagonal flow fans are installed in different locations. When controlling, each fan needs to be controlled individually, which is time-consuming and labor-intensive. In addition, in a working environment such as a factory, there may be dangerous factors such as dust and electric arcs in the air, and the motors equipped in general diagonal flow fans cannot isolate these dangerous factors, which will lead to certain safety hazards when used. For this reason, it is necessary to design a diagonal flow fan that can be easily centrally controlled and has certain explosion-proof performance to solve the problem that when a large number of diagonal flow fans are put into use at the same time in a factory, each diagonal flow fan needs to be controlled and switched individually, which increases the workload, and the motors of general fans lack explosion-proof performance, which poses a safety hazard during use. Summary of the Invention

[0004] In view of the deficiencies in the background technology, the technical problem to be solved by the present invention is to provide a stepless speed-variable explosion-proof diagonal flow fan, the control system and the variable frequency motor of which both realize explosion-proof protection and can realize integrated control.

[0005] To this end, the present invention is implemented by adopting the following technical scheme: a stepless speed explosion-proof diagonal flow fan, comprising a fan barrel device and a fan body, the fan body being installed in the fan barrel device, the fan body comprising a main casing, fan blades, an explosion-proof variable frequency motor, a wiring component and an integrated control module, characterized in that: the explosion-proof variable frequency motor is arranged in the main casing, the explosion-proof variable frequency motor is arranged in the explosion-proof shell, the output end of the explosion-proof variable frequency motor is connected to the fan blades, the main casing is provided with a wiring explosion-proof shell, the wiring explosion-proof shell has an explosion-proof function, the wiring component and the integrated control module are arranged in the wiring explosion-proof shell, the integrated control module connects and controls the explosion-proof variable frequency motor, the integrated control module has a wireless signal receiving and sending function, the main control box is wirelessly connected to the integrated control modules of multiple diagonal flow fans, and the corresponding explosion-proof variable frequency motors are controlled by the integrated control module, so as to realize the centralized or individual control of multiple diagonal flow fans by the main control box.

[0006] Furthermore, the explosion-proof shell of the wiring part is arranged on the top of the main shell, and the explosion-proof shell of the wiring part includes a wiring box and a wiring cover. The wiring box and the wiring cover are combined to form a chamber for accommodating the circuit. The integrated control module is arranged in the chamber, and the explosion-proof variable frequency motor circuit passes through the top of the main shell, passes through the chamber and extends to the outside.

[0007] Furthermore, an air guide cover is provided on the inner wall of the air outlet end of the main housing. When the fan blades rotate, the air flows through the air guide cover, making the air outlet of the diagonal flow fan more concentrated.

[0008] Furthermore, the fan cylinder device includes a front fan cylinder, a rear fan cylinder and mounting feet, the front fan cylinder and the rear fan cylinder are fixedly arranged at both ends of the mounting feet respectively, and the fan body is arranged between the front fan cylinder and the rear fan cylinder.

[0009] Furthermore, the outer sides of both ends of the main housing are fixed to the front and rear fan barrels at their joints by fixing rings.

[0010] Furthermore, grooves are provided at both ends of the mounting foot, and the joints between the main housing and the front and rear fan cylinders are embedded in the grooves at both ends of the mounting foot.

[0011] Furthermore, the front and rear fan cylinders are respectively arranged at both ends of the mounting foot and are integrally formed with the mounting foot.

[0012] Furthermore, the integrated control module is composed of a single chip microcomputer.

[0013] After adopting the above technical solution, the beneficial effects are as follows:

[0014] 1. The stepless speed-variable explosion-proof diagonal flow fan is equipped with an integrated control module in the motor, through which the control signal from the main control box can be received to change the working state of the motor. When multiple stepless speed-variable explosion-proof diagonal flow fans are put into use, there is no need to control each fan separately, thus reducing the workload of operating the fans.

[0015] 2. The main casing of the stepless speed explosion-proof diagonal flow fan is equipped with a wiring explosion-proof shell. The main casing is equipped with a wiring explosion-proof shell, which has an explosion-proof function. The wiring components and the integrated control module are arranged in the wiring explosion-proof shell. The wiring explosion-proof shell can protect the wiring components and the integrated control module. The explosion-proof variable frequency motor is arranged in the explosion-proof shell, so that all parts that may produce flames are wrapped and protected, and all important components are also explosion-proof protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model has the following drawings:

[0017] Figure 1 This is a schematic diagram of the side structure of a continuously variable speed explosion-proof diagonal flow fan;

[0018] Figure 2 This is a schematic diagram of the back structure of a continuously variable speed explosion-proof diagonal flow fan.

[0019] Figure numerals: 1. front fan barrel; 2. main housing; 3. fan blades; 4. air deflector; 5. explosion-proof frequency conversion motor; 6. junction box; 7. junction cover; 8. fixing ring; 9. rear fan barrel; 10. mounting foot; 11. explosion-proof housing. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0021] Reference Figure 1-2 As shown, the stepless speed-variable explosion-proof diagonal flow fan provided by the first embodiment of the present invention includes a fan barrel device and a fan body, the fan body is installed in the fan barrel device, the fan body can be connected to other pipes through the fan barrel device, and can also be used alone, the fan body includes a main casing 2, fan blades 3, an explosion-proof variable frequency motor 5, wiring components and an integrated control module, the explosion-proof variable frequency motor 5 is arranged in the main casing 2, the explosion-proof variable frequency motor 5 is arranged in the explosion-proof shell 11, the front end of the explosion-proof variable frequency motor 5 is connected to the fan blades 3, and the inner wall of the air outlet end of the main casing 2 is provided with a guide cover 4. When the fan blades 3 rotate, the airflow passes through the guide cover 4, making the air outlet of the diagonal flow fan more concentrated.

[0022] The main housing 2 is provided with an explosion-proof shell of the wiring part, which has an explosion-proof function. The wiring components are connected to an external power supply and power the internal components of the fan. The wiring components and the integrated control module are arranged in the explosion-proof shell of the wiring part. The integrated control module is connected to and controls the explosion-proof variable frequency motor 5. The integrated control module has a wireless signal receiving and sending function. The main control box is wirelessly connected to the integrated control modules of multiple diagonal flow fans, and the corresponding explosion-proof variable frequency motors 5 are controlled by the integrated control modules, so that the main control box can centrally control multiple diagonal flow fans, or individually control a single diagonal flow fan.

[0023] The explosion-proof housing for the wiring section is located on top of the main housing 2. The housing includes a junction box 6 and a wiring cover 7. The junction box 6 and wiring cover 7 together form a chamber for accommodating the wiring. The integrated control module is located within the chamber. The wiring for the explosion-proof variable-frequency motor passes through the top of the main housing 2, through the chamber, and extends to the exterior. The integrated control module is preferably comprised of a single-chip microcomputer. The integrated control module receives signals from the main control box to start or shut down the explosion-proof variable-frequency motor 5, thereby driving the fan blades to operate or stop. The integrated control module is located within the chamber formed by the junction box 6 and wiring cover 7, and the exterior of the chamber is the explosion-proof housing for the wiring section.

[0024] The fan barrel assembly includes a front fan barrel 1 and a rear fan barrel 9, each fixedly mounted at the ends of a mounting foot. The fan body is positioned between the front and rear fan barrels. There are two ways to connect the front and rear fan barrels to the fan body: one is to secure the main housing 2 at its outer ends where it meets the front and rear fan barrels via retaining rings. The mounting foot 10 has grooves at its ends, and the main housing 2 fits into the grooves at the ends of the mounting foot 10. Another is to secure the front and rear fan barrels at their outer ends where they meet the front and rear fan barrels, forming an integral part of the mounting foot 10. The fan body is positioned between the front and rear fan barrels 1 and 9, and is secured at its outer ends where it meets the front and rear fan barrels via retaining rings. This structure secures the fan body securely to the front and rear fan barrels during use, and allows for connection to other pipelines through the front and rear fan barrels, making it easier to disassemble for maintenance and inspection.

[0025] After adopting the above technical solution, the fan body is installed between the front and rear fan barrels, and the two sides of the fan body are fixed by the grooves at both ends of the mounting feet 10 and the fixing ring 8. It can be used directly, or it can be used after being connected to other pipes through the front and rear fan barrels. After the installed stepless speed explosion-proof diagonal flow fan is connected to the power supply, the external main control box can be operated to remotely control the stepless speed explosion-proof diagonal flow fan. After issuing the command, the integrated control module in the explosion-proof variable frequency motor 5 receives the signal and controls the explosion-proof variable frequency motor 5 to start working, driving the front fan blades 3 to rotate. The airflow passes through the air guide cover to make the air outlet more concentrated, thereby improving the air outlet efficiency of the diagonal flow fan. For multiple stepless speed explosion-proof diagonal flow fans, the main control box can be remotely controlled at the same time, and the operation is convenient and quick. In this solution, the wiring part shell adopts an explosion-proof shell, and the integrated control module is set in the explosion-proof shell with the wiring part, which can play a role in protecting the integrated control module and important components. The stepless speed-variable explosion-proof diagonal flow fan can control multiple fans simultaneously through a main control box when in use, and can also control a single fan separately, reducing workload and improving operating efficiency. The explosion-proof variable frequency motor 5 used improves control accuracy and saves energy.

[0026] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stepless speed-variable explosion-proof diagonal flow fan, comprising a fan cylinder assembly and a fan body, wherein the fan body is mounted within the fan cylinder assembly and comprises a main housing, fan blades, an explosion-proof variable frequency motor, wiring components, and an integrated control module, and is characterized by: The explosion-proof variable frequency motor is arranged in the main housing, the explosion-proof variable frequency motor is arranged in the explosion-proof shell, the output end of the explosion-proof variable frequency motor is connected to the fan blades, the main housing is provided with a wiring explosion-proof shell, the wiring explosion-proof shell has an explosion-proof function, the wiring components and the integrated control module are arranged in the wiring explosion-proof shell, the integrated control module connects and controls the explosion-proof variable frequency motor, the integrated control module has a wireless signal receiving and sending function, the main control box is wirelessly connected to the integrated control modules of the multiple diagonal flow fans, and the corresponding explosion-proof variable frequency motors are controlled by the integrated control modules, so that the main control box can realize centralized or individual control of the multiple diagonal flow fans.

2. The stepless speed-variable explosion-proof diagonal flow fan according to claim 1 is characterized in that: The explosion-proof shell of the wiring part is arranged on the top of the main shell, and the explosion-proof shell of the wiring part includes a wiring box and a wiring cover. The wiring box and the wiring cover are combined to form a chamber for accommodating the circuit. The integrated control module is arranged in the chamber. The explosion-proof variable frequency motor circuit passes through the top of the main shell, passes through the chamber and extends to the outside.

3. The stepless speed-variable explosion-proof diagonal flow fan according to claim 1 or 2, characterized in that: The inner wall of the air outlet end of the main housing is provided with a guide cover. When the fan blades rotate, the air flows through the guide cover, making the air outlet of the diagonal flow fan more concentrated.

4. The stepless speed-variable explosion-proof diagonal flow fan according to claim 3 is characterized in that: The fan cylinder device includes a front fan cylinder, a rear fan cylinder and a mounting foot. The front fan cylinder and the rear fan cylinder are fixedly arranged at both ends of the mounting foot respectively, and the fan body is arranged between the front fan cylinder and the rear fan cylinder.

5. The stepless speed-variable explosion-proof diagonal flow fan according to claim 4 is characterized in that: The outer sides of both ends of the main housing are fixed to the front and rear fan cylinders at their joints by fixing rings.

6. The stepless speed-variable explosion-proof diagonal flow fan according to claim 5 is characterized in that: The two ends of the installation foot are provided with grooves, and the joints between the main housing and the front and rear fan cylinders are embedded in the grooves at the two ends of the installation foot.

7. The stepless speed-variable explosion-proof diagonal flow fan according to claim 5 is characterized in that: The front and rear fan cylinders are respectively arranged at both ends of the mounting foot and are integrally formed with the mounting foot.

8. The stepless speed-variable explosion-proof diagonal flow fan according to claim 1 or 2, characterized in that: The integrated control module is composed of a single chip microcomputer.

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