Centrifugal ventilator with external rotor motor magnetic field stability protection function

Abstract

The invention relates to the field of centrifugal ventilators, in particular to a centrifugal ventilator with an outer rotor motor magnetic field stable protection function, which comprises a fan shell, a supporting seat is mounted below the fan shell, an air outlet pipe is connected to one side of the upper part of the fan shell in a penetrating manner, and a fixing frame is mounted at an opening in the side surface of the fan shell. In the rotating process of the cylindrical rotor, since the first magnetic plate rotates along with the cylindrical rotor, a group of magnetic field force which is the same as that of the stator is applied to the first magnetic plate through the second magnetic plate on the outer side of the cylindrical rotor, the cylindrical rotor is prevented from generating eccentric force under the interference of an external magnetic field, and the ceramic insulating cylinder can effectively guarantee the stability of the internal magnetic field of the cylindrical rotor; the direction of the internal magnetic field is changed through the active rotation position of the ceramic insulating cylinder, the operation stability of the cylindrical rotor can be improved through the structure, and the effect of improving the rotating speed of the cylindrical rotor is achieved by actively changing the direction of the internal magnetic field of the ceramic insulating cylinder.

Description

Technical Field

[0001] The invention relates to the field of centrifugal fans, and in particular to a centrifugal fan with magnetic field stabilization protection for an outer rotor motor. Background Art

[0002] The outer rotor centrifugal fan is a device that works based on the principle of centrifugal force. The working principle of the outer rotor centrifugal fan is to suck the material through the air inlet, then accelerate the rotation under the action of the rotating impeller, and be thrown out of the centrifuge outlet under the action of centrifugal force, thereby generating a large amount of airflow and pressure. This process mainly relies on the motor to provide power to drive the impeller to rotate, thereby achieving the inhalation, acceleration and discharge of air.

[0003] The Chinese patent application with announcement number CN202746238U discloses a centrifugal outer rotor fan, comprising a casing, an aluminum bracket installed inside the casing, an outer rotor installed on the aluminum bracket through a stator winding and a terminal block, and an impeller installed outside the outer rotor; bearings and oil plugs are installed between the aluminum bracket and the outer rotor through shaft clamps and adjustment gaskets; an insulating gasket is installed between the aluminum bracket and the terminal block; a plastic cover is installed on the stator winding; a safety iron cover is installed outside the casing through gaskets and screws; a lead wire rubber ring is installed on the aluminum bracket; the beneficial effects of the utility model are as follows: practical, low production cost, easy installation, suitable for heat dissipation on mechanical equipment, and good heat dissipation effect.

[0004] During use, the existing outer rotor centrifugal fan is driven by an outer rotor motor. Since the rotor of this motor is barrel-shaped and sleeved to cooperate with the stator in the magnetic field, and some parts are hollow, this structure has the characteristics of good heat dissipation and easy maintenance. However, during use, it is easily affected by the magnetic field in the surrounding environment, causing the rotor to shake easily during rotation, thereby affecting the normal operation of the entire centrifugal fan.

[0005] Therefore, it is necessary to invent a centrifugal fan with magnetic field stabilization protection of an outer rotor motor to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a centrifugal fan with magnetic field stabilization protection for an outer rotor motor. While the cylindrical rotor rotates under the action of magnetic plate one and the stator, a magnetic field is generated by magnetic plate two and acts on magnetic plate one, thereby making the rotation of the cylindrical rotor more stable. By changing the position of magnetic plate two, the direction of the magnetic field is changed, thereby achieving the effect of improving the rotation efficiency of the cylindrical rotor, so as to solve the problem in the prior art that the cylindrical rotor is easily disturbed by the external magnetic field, thereby affecting the overall operation of the fan.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a centrifugal fan with magnetic field stabilization protection of an outer rotor motor, comprising a fan housing, a support seat is installed below the fan housing, an air outlet pipe is connected to one side of the upper side of the fan housing, and a fixing frame is installed at the side opening of the fan housing;

[0008] The outer rotor assembly is arranged in the fan housing and is used to drive the equipment to work;

[0009] The protection component is arranged in the fan casing and is used to protect the outer rotor component.

[0010] As a preferred solution of the present invention, the outer rotor assembly includes a power supply module, and the power supply module is installed on a side of the fan casing away from the fixing frame.

[0011] As a preferred solution of the present invention, a cylindrical impeller is arranged in the fan casing, a cylindrical rotor is installed at the center position of the cylindrical impeller, and the cylindrical rotor is rotatably connected to one side of the fixing frame.

[0012] As a preferred solution of the present invention, a magnetic plate 1 is installed through the inner wall of the cylindrical rotor, and multiple groups of magnetic plates are installed in a ring-shaped distribution. A connecting shaft is installed on the inner wall of the fan casing, and the connecting shaft is rotatably connected to the inner wall of the cylindrical rotor, and the connecting shaft is connected through the cylindrical impeller.

[0013] As a preferred solution of the present invention, a stator is sleeved and fixed on the connecting shaft, and the stator is linearly connected to the power supply module, and the stator is located at the center of each group of magnetic plates.

[0014] As a preferred solution of the present invention, the protection component includes a ceramic insulating cylinder, which is sleeved on a cylindrical rotor, and multiple groups of magnetic plates 2 are installed on the inner wall of the ceramic insulating cylinder, and the magnetic plates 2 are linearly connected to the power supply module, and an annular trapezoidal frame is installed on one side of the ceramic insulating cylinder, and a plurality of groups of positioning holes are opened in a circular shape on the annular trapezoidal frame.

[0015] As a preferred solution of the present invention, an annular trapezoidal slide rail is installed on one side of the fixing frame, and the annular trapezoidal slide rail is slidably connected to the annular trapezoidal frame.

[0016] As a preferred solution of the present invention, a positioning cylinder is installed above the annular trapezoidal slide rail, a positioning rod is connected through the positioning cylinder, the positioning rod is connected through the annular trapezoidal frame, and the positioning rod is engaged with the positioning hole.

[0017] As a preferred solution of the present invention, a push ring is sleeved and fixed on the positioning rod, and the push ring is slidably connected to the positioning tube. A spring is sleeved on the positioning rod, and the upper and lower sides of the spring are respectively fitted with the push ring and the upper part of the inner wall of the positioning tube.

[0018] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0019] During the rotation of the cylindrical rotor, the magnetic plate 1 will rotate with it. At this time, on the outside of the cylindrical rotor, a set of magnetic field forces identical to those of the stator are applied to the magnetic plate 1 through the magnetic plate 2, so as to prevent the cylindrical rotor from generating eccentric force under the interference of the external magnetic field. The ceramic insulating cylinder can effectively ensure the stability of its internal magnetic field, and the direction of the internal magnetic field can be changed through the active rotation position of the ceramic insulating cylinder. This structure can improve the stability of the cylindrical rotor operation, and by actively changing the direction of the magnetic field inside the ceramic insulating cylinder, the speed of the cylindrical rotor can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the power supply module structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the planed structure of the fan housing of the present invention;

[0024] Figure 4 It is a schematic diagram of the planed structure of the ceramic insulating tube of the present invention;

[0025] Figure 5 It is a schematic diagram of the matching structure of the cylindrical rotor and the stator of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the ceramic insulating tube of the present invention;

[0027] Figure 7 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0028] Description of reference numerals:

[0029] 001, fan casing; 002, outer rotor assembly; 003, protection assembly; 101, support seat; 102, air outlet duct; 103, fixing frame; 201, power supply module; 202, cylindrical impeller; 203, cylindrical rotor; 204, magnetic plate one; 205, connecting shaft; 206, stator; 301, ceramic insulating cylinder; 302, magnetic plate two; 303, annular trapezoidal frame; 304, positioning hole; 305, annular trapezoidal slide rail; 306, positioning cylinder; 307, positioning rod; 308, push ring; 309, spring. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The present invention provides Figure 1-7 A centrifugal fan with magnetic field stabilization protection for an outer rotor motor is shown, comprising a fan housing 001, a support base 101 is installed below the fan housing 001, an air outlet pipe 102 is connected to one side of the upper side of the fan housing 001, and a fixing frame 103 is installed at the side opening of the fan housing 001;

[0032] The outer rotor assembly 002 is arranged in the fan housing 001 and is used to drive the equipment to work;

[0033] The protection component 003 is arranged in the fan housing 001 and is used to protect the outer rotor component 002.

[0034] Furthermore, in the above structure, the outer rotor assembly 002 includes a power supply module 201 , and the power supply module 201 is installed on a side of the fan housing 001 away from the fixing frame 103 .

[0035] Power can be provided for operation via the power supply module 201 .

[0036] Furthermore, in the above structure, a cylindrical impeller 202 is disposed in the fan housing 001 , a cylindrical rotor 203 is installed at the center of the cylindrical impeller 202 , and the cylindrical rotor 203 is rotatably connected to one side of the fixing frame 103 .

[0037] The cylindrical rotor 203 is connected to the fixing frame 103 , so that the cylindrical impeller 202 can rotate in the fan housing 001 .

[0038] Furthermore, in the above structure, a magnetic plate 204 is installed through the inner wall of the cylindrical rotor 203, and multiple groups of magnetic plates 204 are installed in a ring-shaped distribution. A connecting shaft 205 is installed on the inner wall of the fan housing 001, and the connecting shaft 205 is rotatably connected to the inner wall of the cylindrical rotor 203, and the connecting shaft 205 is connected through the cylindrical impeller 202.

[0039] By installing the magnetic plate 1 204 through the inner wall of the cylindrical rotor 203 , the magnetic force of the magnetic plate 1 204 can act on the inside of the cylindrical rotor 203 and also on the outside of the cylindrical rotor 203 .

[0040] Furthermore, in the above structure, a stator 206 is sleeved and fixed on the connecting shaft 205 , and the stator 206 is linearly connected to the power supply module 201 , and the stator 206 is located at the center position of each group of magnetic plates 204 .

[0041] The stator 206 is powered by the power supply module 201 , so that the stator 206 generates a magnetic field, thereby driving the cylindrical rotor 203 to rotate, causing the cylindrical impeller 202 to rotate as a whole, thereby generating a ventilation effect.

[0042] Furthermore, in the above structure, the protection component 003 includes a ceramic insulating cylinder 301, which is sleeved on the cylindrical rotor 203, and multiple groups of magnetic plates 302 are installed on the inner wall of the ceramic insulating cylinder 301, and the magnetic plates 302 are linearly connected to the power supply module 201. An annular trapezoidal frame 303 is installed on one side of the ceramic insulating cylinder 301, and a plurality of groups of positioning holes 304 are arranged in a ring-shaped manner on the annular trapezoidal frame 303.

[0043] The power supply module 201 can supply power to the magnetic plate 2 302 to generate a magnetic field, and the magnetic field directions of the magnetic plate 2 302 and the magnetic plate 1 204 are the same, so that the magnetic plate 1 204 can move along the magnetic plate 2 302 during the rotation process, thereby offsetting the eccentric force generated by the rotation, and the ceramic insulating cylinder 301 can further offset the external magnetic field interference, thereby improving the operating stability of the cylindrical rotor 203.

[0044] Furthermore, in the above structure, an annular trapezoidal slide rail 305 is installed on one side of the fixing frame 103 , and the annular trapezoidal slide rail 305 is slidably connected to the annular trapezoidal frame 303 .

[0045] Through the cooperation of the annular trapezoidal slide rail 305 and the annular trapezoidal frame 303 , the ceramic insulating cylinder 301 can rotate independently, thereby changing the direction of the magnetic field inside the ceramic insulating cylinder 301 .

[0046] Furthermore, in the above structure, a positioning tube 306 is installed above the annular trapezoidal slide rail 305, a positioning rod 307 is connected through the positioning tube 306, and the positioning rod 307 is connected through the annular trapezoidal frame 303, and the positioning rod 307 is clamped with the positioning hole 304.

[0047] The positioning rod 307 and the positioning hole 304 are engaged with each other, thereby limiting the sliding position of the annular trapezoidal frame 303 inside the annular trapezoidal frame 303 .

[0048] Furthermore, in the above structure, a push ring 308 is sleeved and fixed on the positioning rod 307, and the push ring 308 is slidably connected to the positioning tube 306. A spring 309 is sleeved on the positioning rod 307, and the upper and lower sides of the spring 309 are respectively fitted with the push ring 308 and the upper inner wall of the positioning tube 306.

[0049] The spring 309 squeezes the push ring 308 , so that the positioning rod 307 can be pushed and fixed firmly in the positioning hole 304 .

[0050] like Figure 1-7 As shown, the stator 206 is powered by the power supply module 201, so that the magnetic plate 1 204 drives the cylindrical rotor 203 to rotate, and the cylindrical impeller 202 rotates synchronously, so that air enters from one side of the fan housing 001 and is transported along the air outlet pipe 102. In this process, the magnetic plate 2 302 will also receive power from the power supply module 201, thereby generating the same magnetic field as the stator 206, thereby offsetting the magnetic force of the magnetic plate 1 204 during the rotation process, so that the magnetic plate 1 204 is always in a stable rotation state, thereby improving the overall operation stability of the cylindrical rotor 203, and when the positioning rod 307 is toggled, the positioning rod 307 is After the rod 307 is disengaged from the positioning hole 304, the ceramic insulating cylinder 301 is rotated to make the annular trapezoidal frame 303 slide along the annular trapezoidal slide rail 305, thereby changing the direction of the magnetic field of the magnetic plate 2 302. When the direction of the magnetic field is at an intersection with the direction of the magnetic field of the stator 206, the rotation speed of the magnetic plate 1 204 can be increased, thereby achieving the effect of adjusting the rotation speed of the cylindrical rotor 203. Through this structure, the cylindrical rotor 203 can avoid being disturbed by the external magnetic field during operation, improve the stability of operation, and actively change the direction of the internal magnetic field, thereby achieving the effect of increasing the rotation speed of the cylindrical rotor 203.

[0051] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A centrifugal fan with magnetic field stabilization protection for an outer rotor motor, comprising a fan housing (001), characterized in that: A support seat (101) is installed below the fan housing (001), an air outlet pipe (102) is connected through one side of the top of the fan housing (001), and a fixing frame (103) is installed at the side opening of the fan housing (001); The outer rotor assembly (002) is arranged in the fan housing (001) and is used to drive the equipment to work; The protection component (003) is arranged in the fan housing (001) and is used to protect the outer rotor component (002).

2. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 1, characterized in that: The outer rotor assembly (002) comprises a power supply module (201), and the power supply module (201) is installed on a side of the fan housing (001) away from the fixing frame (103).

3. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 2, characterized in that: A cylindrical impeller (202) is arranged in the fan housing (001), a cylindrical rotor (203) is installed at the center position inside the cylindrical impeller (202), and the cylindrical rotor (203) is rotatably connected to one side of the fixing frame (103).

4. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 3, characterized in that: A magnetic plate 1 (204) is installed through the inner wall of the cylindrical rotor (203), and multiple groups of magnetic plates 1 (204) are installed in a ring-shaped distribution. A connecting shaft (205) is installed on the inner wall of the fan housing (001), and the connecting shaft (205) is rotatably connected to the inner wall of the cylindrical rotor (203), and the connecting shaft (205) is connected through the cylindrical impeller (202).

5. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 4, characterized in that: A stator (206) is sleeved and fixed on the connecting shaft (205), and the stator (206) is linearly connected to the power supply module (201), and the stator (206) is located at the center position of each group of magnetic plates (204).

6. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 1, characterized in that: The protection component (003) comprises a ceramic insulating cylinder (301), the ceramic insulating cylinder (301) is sleeved on the cylindrical rotor (203), a plurality of groups of magnetic plates (302) are installed on the inner wall of the ceramic insulating cylinder (301), and the magnetic plates (302) are linearly connected to the power supply module (201), and an annular trapezoidal frame (303) is installed on one side of the ceramic insulating cylinder (301), and a plurality of groups of positioning holes (304) are arranged in an annular manner.

7. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 1, characterized in that: An annular trapezoidal slide rail (305) is installed on one side of the fixing frame (103), and the annular trapezoidal slide rail (305) is slidably connected to the annular trapezoidal frame (303).

8. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 7, characterized in that: A positioning cylinder (306) is installed above the annular trapezoidal slide rail (305), a positioning rod (307) is connected through the positioning cylinder (306), the positioning rod (307) is connected through the annular trapezoidal frame (303), and the positioning rod (307) is clamped with the positioning hole (304).

9. A centrifugal fan with outer rotor motor magnetic field stabilization protection according to claim 8, characterized in that: A push ring (308) is sleeved and fixed on the positioning rod (307), and the push ring (308) is slidably connected to the positioning tube (306). A spring (309) is sleeved on the positioning rod (307), and the upper and lower sides of the spring (309) are respectively in contact with the push ring (308) and the upper part of the inner wall of the positioning tube (306).

Images