A high-speed permanent magnet motor frequency conversion control device

Abstract

The utility model discloses a high-speed permanent magnet motor variable frequency control device, including an outer layer structure, a control structure is arranged inside the outer layer structure, a circulation structure is installed inside the control structure, the outer layer structure includes an outer shell, a heat preservation layer, a buffer device, a guide rod, a lug, a threading hole, and a sealing plate, the inner part of the outer shell is a heat preservation layer, a buffer device is installed at one end of the heat preservation layer, and the buffer device includes a spring and a damping sleeve rod. Beneficial effect: The utility model can effectively control the temperature and provide protection buffer for the internal control structure through the provided outer layer structure, and can prevent the internal control components from affecting the performance of electronic components due to temperature changes. At the same time, the circulation structure can prevent the generation of local heat sources, so that the temperature of the internal space is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed permanent magnet motors, in particular to a high-speed permanent magnet motor frequency conversion control device. Background Art

[0002] High-speed magnetic levitation turbine vacuum blower is an advanced gas compression equipment that adopts magnetic levitation technology and turbine structure. It has the characteristics of high efficiency, low noise and low vibration. The research and development of such equipment requires multi-faceted engineering and scientific research. High-speed permanent magnet motors are usually used in this type of blower. It is necessary to design a motor structure that can adapt to high-speed operation to provide the required power output.

[0003] The high-speed permanent magnet motor variable frequency control device can provide high-precision control of the motor speed, current and torque to meet the performance requirements of specific applications.

[0004] However, since the high-speed permanent magnet motor frequency conversion control device usually has higher precision, in order to ensure accurate control of the motor, the high-speed permanent magnet motor frequency conversion control is generally installed in the control cabinet, and the control cabinet in the prior art does not have good sealing and good temperature control effect, and there may be a heat source.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides a high-speed permanent magnet motor frequency conversion control device, which has good frequency conversion control component protection function, thereby solving the problems existing in the prior art.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned good protection function of the frequency conversion control component, the specific technical solution adopted by the utility model is as follows:

[0010] A high-speed permanent magnet motor variable frequency control device comprises an outer structure, a control structure is arranged inside the outer structure, a circulation structure is installed inside the control structure, the outer structure comprises an outer shell, an insulation layer, a buffer device, a guide rod, a lug, a threading hole, and a sealing plate, the outer shell has an insulation layer inside, a buffer device is installed at one end of the insulation layer, and the buffer device comprises a spring and a damping sleeve rod.

[0011] Furthermore, a guide rod is installed in the outer shell, a support ear is slidably penetrated on the guide rod, a threading hole is opened at the bottom end of the outer shell, a sliding groove is opened on one side surface of the outer shell, and a sealing plate is slidably connected in the sliding groove.

[0012] Furthermore, the control structure includes a control cabinet, an opening and closing door, a control component, a docking joint, an arc edge, a temperature sensor, and a resistance heating element. The opening and closing door is connected to the control cabinet via a hinge. The control cabinet is provided with a terminal block and a guide rail. The guide rail is equipped with a control component. The control component includes a thermomagnetic switch, a contactor, a motor protector, a frequency converter, and a controller.

[0013] Furthermore, a docking joint is installed at the bottom end of the control cabinet, arc-shaped edges are provided at both ends of the interior of the control cabinet, a temperature sensor is provided on the surface of one side of the interior of the control cabinet, and a resistance heating element is installed around the outer shell of the control cabinet.

[0014] Furthermore, the circulation structure includes an L-plate, a mounting shell, an electric fan, a magnetic attraction plate, a bent joint, and a bent pipe, and the L-plate is fixedly mounted on the arc-shaped edge.

[0015] Furthermore, a magnetic attraction plate is magnetically attracted on the inner side of the L-plate, and the magnetic attraction plate is flatly embedded in the mounting shell, and a channel is opened in the mounting shell.

[0016] Furthermore, an electric fan is installed at the port of the channel, one side of the electric fan is connected to a bent joint, and the bent joint is connected to a bent pipe.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a high-speed permanent magnet motor frequency conversion control device, which has the following beneficial effects:

[0019] The utility model can effectively control the temperature and provide protective buffering for the internal control structure through the outer layer structure, thereby preventing the internal control components from affecting the performance of electronic components due to temperature changes. At the same time, the circulation structure can prevent the generation of local heat sources, making the temperature of the internal space more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the main structure of the high-speed permanent magnet motor variable frequency control device according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the outer structure of the high-speed permanent magnet motor variable frequency control device according to an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the control structure of the high-speed permanent magnet motor variable frequency control device according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of a control cabinet of a high-speed permanent magnet motor frequency conversion control device according to an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the circulation structure of the high-speed permanent magnet motor variable frequency control device according to an embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of an L-plate of a high-speed permanent magnet motor variable frequency control device according to an embodiment of the utility model;

[0027] Figure 7 It is an internal diagram of the circulation structure of the high-speed permanent magnet motor variable frequency control device according to the embodiment of the utility model.

[0028] In the figure:

[0029] 1. Outer structure; 101. Outer shell; 102. Insulation layer; 103. Buffer device; 104. Guide rod; 105. Support ear; 106. Threading hole; 107. Sealing plate; 2. Control structure; 201. Control cabinet; 202. Opening and closing door; 203. Control component; 204. Butt joint; 205. Arc edge; 206. Temperature sensor; 207. Resistance heating element; 3. Circulation structure; 301. L plate; 302. Mounting shell; 303. Electric fan; 304. Magnetic plate; 305. Bend joint; 306. Bend pipe. DETAILED DESCRIPTION

[0030] For further explanation, the present invention is provided with accompanying drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0031] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-7As shown, it includes an outer structure 1, a control structure 2 is arranged inside the outer structure 1, a circulation structure 3 is installed inside the control structure 2, the outer structure 1 includes an outer shell 101, an insulation layer 102, a buffer device 103, a guide rod 104, a lug 105, a threading hole 106, and a sealing plate 107. The insulation layer 102 is inside the outer shell 101, and a buffer device 103 is installed at one end of the insulation layer 102. The buffer device 103 includes a spring and a damping sleeve rod.

[0032] The outer structure 1 has good thermal insulation and buffering stability, and can protect the frequency conversion control component 203 of the high-speed permanent magnet motor of the control structure 2. At the same time, the circulation structure 3 provided inside the control structure 2 can effectively prevent the generation of local heat sources.

[0033] A guide rod 104 is also installed in the outer shell 101, and a support ear 105 is slidably penetrated on the guide rod 104. A threading hole 106 is opened at the bottom end of the outer shell 101, and a sliding groove is opened on one side surface of the outer shell 101, and a sealing plate 107 is slidably connected in the sliding groove.

[0034] One side of the support ear 105 is fixedly installed on one side of the control cabinet 201. The spring and damping sleeve of the buffer device 103 can effectively buffer the vibration of the cabinet. The insulation layer 102 is made of insulation material, which can improve the internal insulation effect in a low-temperature environment.

[0035] The control structure 2 includes a control cabinet 201, an opening and closing door 202, a control component 203, a docking joint 204, an arc edge 205, a temperature sensor 206, and a resistance heating element 207. The opening and closing door 202 is connected to the control cabinet 201 through a hinge. A terminal block and a guide rail are arranged in the control cabinet 201. The control component 203 is installed on the guide rail. The control component 203 includes a thermal magnetic switch, a contactor, a motor protector, a frequency converter, and a controller.

[0036] A docking joint 204 is installed at the bottom end of the control cabinet 201 , arc-shaped edges 205 are provided at both ends of the interior of the control cabinet 201 , a temperature sensor 206 is provided on one surface of the interior of the control cabinet 201 , and a resistance heating element 207 is installed around the outer shell of the control cabinet 201 .

[0037] The resistance heating elements 207 are respectively installed on both sides of the top and the bottom of the control cabinet 201. At the same time, the temperature sensors 206 are evenly installed on the inner side of the control cabinet 201. The temperature of each point can be monitored. The resistance heating element 207 near the point can be started for heating according to the temperature difference of each point to keep the internal temperature higher than the external temperature. The internal temperature slightly higher than the external temperature can increase the internal air pressure and effectively prevent dust from entering the electronic components.

[0038] The circulation structure 3 includes an L-plate 301, a mounting shell 302, an electric fan 303, a magnetic plate 304, a bent joint 305, and a bent pipe 306. The L-plate 301 is fixedly mounted on the arc-shaped edge 205. The inner side of the L-plate 301 is magnetically attracted with a magnetic plate 304, and the magnetic plate 304 is flatly embedded in the mounting shell 302. A channel is opened in the mounting shell 302, and an electric fan 303 is installed at the port of the channel. A bent joint 305 is connected to one side of the electric fan 303, and the bent joint 305 is connected to a bent pipe 306.

[0039] The L-plate 301 of the circulation structure 3 is a magnetic metal plate, and the mounting shell 302 can be conveniently mounted on the L-plate 301 through the magnetic plate 304. The two ends of the internal channel have an angle of ninety degrees, and electric fans 303 are installed at both ends. At the same time, the circulation structure 3 is installed at the arc-shaped edge 205 of the control cabinet 201, and the arc-shaped edge 205 is at the diagonal point of the control cabinet 201, and the wind direction of the electric fan 303 is adjustable. Therefore, when the electric fan 303 is started, the internal gas can circulate, effectively preventing the generation of local heat sources.

[0040] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0041] In summary, with the aid of the above technical solution of the utility model, the outer layer structure 1 has good heat preservation and buffering stabilization effect, so that the control structure 2 can protect the variable frequency control component 203 of the high-speed permanent magnet motor. At the same time, the circulation structure 3 provided inside the control structure 2 can effectively prevent the generation of local heat sources. One side of the support ear 105 is fixedly installed on one side of the control cabinet 201. The spring and damping sleeve rod of the buffer device 103 can effectively buffer the vibration of the cabinet. The insulation layer 102 is made of insulation material, which can improve the internal insulation effect of the low temperature environment. The resistance heating element 207 is respectively installed on both sides of the top and the bottom of the control cabinet 201. At the same time, the temperature sensor 206 is evenly installed on the inner side of the control cabinet 201, which can monitor the temperature of each point. The temperature can be monitored, and the resistance heating element 207 adjacent to the point can be started for heating according to the temperature difference of each point, so as to keep the internal temperature higher than the external temperature. The internal temperature slightly higher than the external temperature can increase the internal air pressure, effectively preventing dust from entering the electronic components. The L plate 301 of the circulation structure 3 is a magnetic metal plate, and the mounting shell 302 can be conveniently installed on the L plate 301 through the magnetic plate 304. The two ends of the internal channel have an angle of ninety degrees, and electric fans 303 are installed at both ends. At the same time, the circulation structure 3 is installed at the arc-shaped edge 205 of the control cabinet 201, and the arc-shaped edge 205 is at the diagonal of the control cabinet 201, and the wind direction of the electric fan 303 is adjustable. Therefore, when the electric fan 303 is started, the internal gas can circulate, effectively preventing the generation of local heat sources.

[0042] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed permanent magnet motor frequency conversion control device, characterized in that: The invention comprises an outer structure (1), wherein a control structure (2) is arranged inside the outer structure (1), and a circulation structure (3) is installed inside the control structure (2); the outer structure (1) comprises an outer shell (101), a heat-insulating layer (102), a buffer device (103), a guide rod (104), a lug (105), a threading hole (106), and a sealing plate (107); the heat-insulating layer (102) is arranged inside the outer shell (101), and a buffer device (103) is installed at one end of the heat-insulating layer (102); the buffer device (103) comprises a spring and a damping sleeve rod; A guide rod (104) is also installed in the outer shell (101), and a support ear (105) is slidably penetrated on the guide rod (104). A threading hole (106) is provided at the bottom end of the outer shell (101), and a sliding groove is provided on one side surface of the outer shell (101), and a sealing plate (107) is slidably connected in the sliding groove.

2. A high-speed permanent magnet motor variable frequency control device according to claim 1, characterized in that: The control structure (2) comprises a control cabinet (201), an opening and closing door (202), a control component (203), a docking joint (204), an arc-shaped edge (205), a temperature sensor (206), and a resistance heating element (207); the opening and closing door (202) is connected to the control cabinet (201) via a hinge; a terminal block and a guide rail are provided in the control cabinet (201); the control component (203) is installed on the guide rail; and the control component (203) comprises a thermal magnetic switch, a contactor, a motor protector, a frequency converter, and a controller.

3. A high-speed permanent magnet motor variable frequency control device according to claim 2, characterized in that: A docking joint (204) is installed at the bottom end of the control cabinet (201), arc-shaped edges (205) are provided at both ends of the interior of the control cabinet (201), a temperature sensor (206) is provided on one surface of the interior of the control cabinet (201), and a resistance heating element (207) is installed on the peripheral side of the outer shell of the control cabinet (201).

4. A high-speed permanent magnet motor variable frequency control device according to claim 3, characterized in that: The circulation structure (3) comprises an L-plate (301), a mounting shell (302), an electric fan (303), a magnetic attraction plate (304), a bent joint (305), and a bent pipe (306); the L-plate (301) is fixedly mounted on the arc-shaped edge (205).

5. A high-speed permanent magnet motor variable frequency control device according to claim 4, characterized in that: A magnetic attraction plate (304) is magnetically attracted on the inner side of the L plate (301), and the magnetic attraction plate (304) is flatly embedded in the installation shell (302). A channel is opened in the installation shell (302).

6. A high-speed permanent magnet motor variable frequency control device according to claim 5, characterized in that: An electric fan (303) is installed at the port of the channel, one side of the electric fan (303) is connected to a bent joint (305), and the bent joint (305) is connected to a bent pipe (306).

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