CN114828496A - Novel converter easily dispels heat - Google Patents

Abstract

The invention discloses a novel frequency converter with easy heat dissipation, comprising a casing, an air inlet and an air outlet are respectively provided on both sides of the casing, a first filter screen is arranged on the outer side of the air inlet, and a first filter screen is arranged on the outer side of the air outlet. There is a second filter screen, a cooling fan is arranged inside the casing near the air inlet, a frequency converter body is installed inside the casing, a plurality of rotating plates are rotated at the air inlet, and two adjacent rotating plates are arranged as One group is arranged in a figure-eight shape, and a connecting belt is connected between the two rotating plates in the same group; the rotating plate is provided with an adjustment component, when the heat inside the casing is high; when the inverter is working at full load, the temperature inside the casing is increased When it is higher, the connecting belt is propped up, thereby increasing the ventilation volume through the first filter screen and the connecting belt, and accelerating the heat dissipation of the inverter. Avoid entering more dust inside the casing to affect the use of the inverter.

Description

A new type of inverter with easy heat dissipation

technical field

The invention relates to the technical field of frequency converters, in particular to a novel frequency converter with easy heat dissipation.

Background technique

The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. The inverter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit and micro-processing unit. And frequency, according to the actual needs of the motor to provide the required power supply voltage, and then achieve the purpose of energy saving, speed regulation, in addition, the inverter also has many protection functions, such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, frequency converters have also been widely used.

Chinese invention patent CN113329594A discloses a heat-dissipating frequency converter, including a box body and a frequency converter body, a mounting seat is arranged at the bottom of the box body, the frequency converter body is mounted on the mounting seat, a shock absorbing component is arranged at the bottom of the box body, and the bottom of the frequency converter body is arranged There is a high temperature detection component, a heat dissipation component is arranged in the box, and the high temperature detection component controls the connection of the heat dissipation component. The right side of the box is provided with a heat dissipation hole, and the right side of the box is detachably connected with a dust-proof net. It plays the role of shock absorption to prevent the inverter body from being damaged due to vibration. At the same time, it is equipped with a high temperature detection component. When the temperature in the box is too high, the high temperature detection component controls the heat dissipation component to work and dissipates heat inside the box. The hot hole can convert the frequency converter. The heat generated by the body of the device is dissipated, and the dustproof net can play a role in preventing dust from entering the inside of the box through the heat dissipation hole. The desiccant particles in the box can play a drying role and avoid moisture in the box.

The above equipment dissipates heat from the inverter by means of cooling fans and slots on the box, while the size of the filter holes for filtering the air is relatively fixed. If the size is too large, dust in the air will enter the box. Affect the use of the inverter, and the small size will affect the heat dissipation efficiency. In the actual use process, in order to improve the heat dissipation efficiency, a larger filter hole is often used, which will cause the small size of dust in the air to continue to enter the box. Internally affects the inverter.

Therefore, it is necessary to provide a new type of inverter with easy heat dissipation to solve the above technical problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a new type of frequency converter with easy heat dissipation, so as to solve the problem that the existing equipment proposed in the above background technology uses a cooling fan and a slot on the box to radiate heat from the frequency converter and filter the air. The size of the filter hole is relatively fixed. If the size is too large, dust in the air will enter the inside of the box and affect the use of the inverter. When the size is small, it will affect the heat dissipation efficiency. In the actual use process, in order to improve the heat dissipation efficiency, the Larger filter holes will lead to the problem that small-sized dust in the air will continue to enter the inside of the box and affect the inverter.

Based on the above-mentioned ideas, the present invention provides the following technical solution: including a casing, an air inlet and an air outlet are respectively opened on both sides of the casing, a first filter screen is arranged on the outer side of the air inlet, and a first filter screen is arranged on the outer side of the air outlet. The second filter screen, a cooling fan is installed inside the casing near the air inlet, the main body of the frequency converter is installed inside the casing, a plurality of rotating plates are rotated at the air inlet, and two adjacent rotating plates are set as one The groups are arranged in a figure-eight shape, and a connecting belt is connected between the two rotating plates in the same group;

An adjustment assembly is arranged on the rotating plate. When the heat inside the casing is high, the adjustment assembly drives the two rotating plates in the same group away from each other to spread the connecting belt.

As a further solution of the present invention: the adjustment assembly includes a pull cord disposed at the air inlet, one end of the pull cord is placed inside the housing, and the other end of the pull cord extends through the interior of the housing to the air inlet, the pull cord The rope passes through a plurality of rotating plates in a wave shape and then extends into the inner cavity of the casing again.

As a further solution of the present invention: the rotating plate is provided with a positioning shaft, the positioning shaft penetrates the rotating plate and is fixedly connected with the rotating plate, and the top and bottom of the air inlet are provided with limit holes on the outer casing, and the positioning shaft Both the top and bottom ends of the coil spring extend into the limit hole and are rotatably connected to the housing. The limit hole is provided with a coil spring, the coil spring is sleeved on the outside of the positioning shaft, and one end of the coil spring is connected to the limit The inner wall of the hole is fixedly connected, and the other end of the coil spring is fixed with the outer side surface of the positioning shaft.

As a further solution of the present invention: a vertical shaft is arranged inside the casing, the two ends of the pull rope placed in the inner cavity of the casing are fixedly connected to the vertical shafts on both sides respectively, and the bottom end of the vertical shaft is fixedly connected with a A driving bevel gear, the bottom end of the driven bevel gear is meshed with a driving bevel gear, a driving shaft is arranged inside the casing, the driving bevel gear is fixedly sleeved on the outer side of the driving shaft, and a driving bevel gear is arranged on the side of the casing a motor, and the drive shaft is drive-connected with the drive motor.

As a further solution of the present invention: both ends of the rotating plate are fixedly connected with buffer pads, when the pull rope is gradually stretched, it drives the two rotating plates in the same group to rotate relative to each other and finally follow the straight line to be in an aligned state, The multiple rotating plates are located on the same straight line at the air inlet.

As a further solution of the present invention: the rotating plate and the buffer pad are both provided with a through guide groove, the pull rope passes through the buffer pad and the rotating plate through the guide groove, and the plurality of rotating plates at the air inlet are stretched When they are in the same straight line under the force of the straight pulling rope, the guide grooves on the multiple rotating plates and the buffer pad are aligned so that the multiple rotating plates are connected to each other. The air guide hole is communicated with the guide groove.

As a further solution of the present invention: a sealing frame is fixedly connected to the inner side of the casing at the air inlet, a fixing frame is fixedly connected to the inner side of the sealing frame, the cooling fan is fixed inside the fixing frame, and the space in the sealing frame is It is set as an accommodating chamber, and the inner wall of the casing is located in the accommodating chamber with an air inlet slot, the air inlet slot is set to be L-shaped, and one end of the air inlet slot is in communication with the accommodating chamber, and the air inlet slot is in communication with the accommodating chamber. The other end is connected with the air inlet, and when a plurality of rotating plates are collinear, the rotating plate at the edge is connected with the air inlet groove through the guide groove.

As a further solution of the present invention, the top and bottom of the air inlet on the inner side of the casing are fixedly connected with baffles, and the baffles are placed inside the sealing frame.

As a further solution of the present invention, the vertical shaft is rotatably connected to the inner top of the sealing frame, one end of the drive shaft is rotatably connected to the inner wall of the sealing frame, and the other end passes through the sealing frame and the casing and extends to the outside of the casing.

Compared with the prior art, the beneficial effect of the present invention is: when the temperature inside the casing is low, the two rotating plates of the same group are driven to approach each other by the adjusting assembly, so that the connecting belt is loosened and the ventilation holes on it are reduced. At this time, the dust of smaller particles in the air can be filtered. In summary, the device is in a loose state when the inverter is in normal use and the temperature inside the casing is low through the set connecting belt. , it can filter the dust of small size in the air, so as to avoid the dust from entering the inside of the casing, and when the inverter is working at full load and the temperature inside the casing is high, the connecting belt is supported, thereby increasing the number of pass through the first filter. The ventilation volume of the net and the connecting belt accelerates the heat dissipation of the inverter. Therefore, the above structure can filter the dust of small size in the air to the maximum extent, so as to avoid the dust entering the casing and affecting the use of the inverter.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the structural representation that the rotating plate of the present invention is placed at the air inlet;

3 is a schematic diagram of the internal structure of the housing of the present invention;

Fig. 4 is the sectional view of the present invention;

5 is a schematic diagram of the connection structure between the drive shaft and the vertical shaft of the present invention;

6 is a schematic diagram of the connection structure of the pull rope and the rotating plate of the present invention;

Fig. 7 is the structure enlarged view of A part of Fig. 2 of the present invention;

FIG. 8 is an enlarged view of the structure of part B of FIG. 3 of the present invention;

FIG. 9 is an enlarged view of the structure of the C part of FIG. 6 of the present invention;

Figure 10 is a schematic view of the coil spring structure of the present invention;

11 is a schematic structural diagram of the rotating plates of the present invention when they are collinear;

FIG. 12 is an enlarged view of the structure of part D of FIG. 11 of the present invention;

FIG. 13 is an enlarged view of the structure of the E part of FIG. 11 of the present invention.

In the figure: 1. Shell; 2. Driving motor; 3. First filter screen; 4. Air inlet; 5. Drive shaft; 6. Rotating plate; 7. Connecting belt; 8. Fixed frame; 9. Sealing frame; 10 , vertical axis; 11, second filter screen; 12, air outlet; 13, inverter body; 14, retaining bar; 15, pull rope; 16, buffer pad; 17, positioning shaft; 18, air guide hole; 19 20, coil spring; 21, limit hole; 22, air inlet slot; 23, accommodating chamber; 24, fan blade; 25, servo motor.

Detailed ways

As shown in Figure 1-3, a new type of inverter with easy heat dissipation includes a casing 1. The two sides of the casing 1 are respectively provided with an air inlet 4 and an air outlet 12. At the same time, a first filter screen is arranged on the outside of the air inlet 4. 3, and a second filter screen 11 is arranged on the outside of the air outlet 12. The first filter screen 3 and the second filter screen 11 are respectively arranged on both sides of the casing 1 and are fixedly connected to the casing 1 through bolts. A cooling fan is provided at the air inlet 4, and the cooling fan includes a fan blade 24 and a servo motor 25 that drives the fan blade 24 to rotate. On the outside of the propeller shaft, and inside the casing 1 , an inverter main body 13 is provided.

In the actual use process, the forward rotation of the servo motor 25 drives the transmission shaft to rotate, thereby driving the fan blades 24 to rotate forward. At this time, the external air is sucked into the casing 1 through the first filter screen 3 and the air inlet 4. Exhaust from the air outlet 12 is beneficial to heat dissipation of the frequency converter inside the casing 1 .

As shown in Figure 3-6, during use, due to the different working states of the inverter, the heat dissipated during operation is different, and the first filter screen 3 at the air inlet 4 cannot be used according to the working state of the inverter. In order to improve the effect of heat dissipation, the aperture of the first filter screen 3 is often larger, so the smaller size dust in the outside air will enter the inside of the casing 1 through the first filter screen 3 and be adsorbed on the inverter. In severe cases, it will affect the normal use of the frequency converter. In order to solve this problem, a rotating plate 6 is installed at the air inlet 4, the number of rotating plates 6 is set to multiple, and the adjacent two rotating plates 6 are set as One group is arranged in a figure-eight shape. During normal use, the larger opening between the two adjacent rotating plates 6 faces the inside of the casing 1, and a plurality of rotating plates 6 are arranged in sequence at the air inlet 4, and two adjacent groups of The rotating plates 6 are in contact with each other.

Further, a connecting belt 7 is connected between the two rotating plates 6 in the same group. The connecting belt 7 is arranged at the end of the rotating plate 6 away from the first filter screen 3, and the connecting belt 7 is made of cotton, linen or other air-permeable materials. It is made, when the two rotating plates 6 of the same group are close to each other, the connecting belt 7 is in a loose state, and the ventilation holes on it are contracted to reduce the air permeability, and when the two rotating plates 6 of the same group are rotated outwards and When gradually moving away, the connecting belt 7 is stretched. At this time, the size of the ventilation holes on the connecting belt 7 increases to increase the air permeability, and the rotating plate 6 is provided with an adjustment component. When the heat inside the casing 1 is high At this time, the two rotating plates 6 in the same group are driven away from each other by the adjustment assembly, so as to increase the air volume passing between the two adjacent rotating plates 6, and at this time, the connecting belt 7 is stretched, resulting in the ventilation on it. The increase of the hole is beneficial to improve the air permeability. At this time, the rotating fan blade 24 can drive more air flow through the first filter screen 3 and the connecting belt 7 and enter the inside of the casing 1 to cool the frequency converter. When the casing 1 When the internal temperature is low, the two rotating plates 6 of the same group are driven to approach each other by the adjustment assembly, so that the connecting belt 7 is loosened and the ventilation holes on it are reduced. Filtering; To sum up, through the connection belt 7 provided in this device, when the inverter is in normal use and the temperature inside the casing 1 is low, the connection belt 7 is in a loose state, which can filter the dust of small size in the air. filter, so as to prevent dust from entering the inside of the casing 1, and when the inverter is working at full load, so that the internal temperature of the casing 1 is high, the connecting belt 7 is supported, thereby increasing the ventilation through the first filter screen 3 and the connecting belt 7 Therefore, the above structure can filter the dust of small size in the air to the maximum extent, so as to prevent more dust from entering the casing 1 and affecting the use of the inverter.

As shown in Figures 4 and 10, the adjustment assembly includes a pull cord 15 arranged at the air inlet 4, one end of the pull cord 15 is placed inside the casing 1, and the other end enters the casing of the casing 1 and reaches the air inlet 4, Then, it passes through a plurality of rotating plates 6 in a wave shape and then enters the casing of the casing 1 and extends into the inner cavity of the casing 1 again.

Further, a positioning shaft 17 is provided on the rotating plate 6, the positioning shaft 17 penetrates the rotating plate 6 and is fixedly connected with the rotating plate 6, and the casing 1 is located at the top and bottom of the air inlet 4. There are limit holes 21, and the positioning shaft The top and bottom ends of 17 both extend to the interior of the limiting hole 21 and are rotatably connected to the housing 1. A coil spring 20 is arranged inside the limiting hole 21, and the coil spring 20 is sleeved on the outside of the positioning shaft 17. One end of the coil spring 20 It is fixedly connected with the inner wall of the limit hole 21, and the other end of the coil spring 20 is fixed with the outer side of the positioning shaft 17. During normal use, the positioning shaft 17 is limited by the bureau, so that the two rotating plates 6 in the same group are In figure eight.

During use, since the pull rope 15 passes through a plurality of rotating plates 6, after the pull rope 15 is straightened, it is gradually in a straight state, and therefore, the pull rope 15 will squeeze the rotating plate 6. force, so that the rotating plate 6 can overcome the resistance of the coil spring 20 to drive the two rotating plates 6 of the same group to rotate outward and gradually move away, thereby stretching the connecting belt 7, and when the pulling rope 15 is released, it gradually loses the opposite rotation. The pressing force of the plate 6 can drive the positioning shaft 17 and the rotating plate 6 to reverse and reset under the force of the coil spring 20 at this time, thereby urging the connection belt 7 to loosen.

In order to pull the pull rope 15 , a sealing frame 9 is fixedly connected to the air inlet 4 on the inner surface of the casing 1 , and a vertical shaft 10 is rotated on the inner top wall of the sealing frame 9 , and the vertical shaft 10 is symmetrically arranged with respect to the air inlet 4 . Specifically, in order to improve the rotation stability of the vertical shaft 10, a sleeve is fixedly connected to the inner top wall of the sealing frame 9, while the vertical shaft 10 is rotatably connected to the sleeve, and the pull rope 15 is placed in the casing 1. The two ends of the cavity are respectively fixed on the vertical shafts 10 on both sides. When the vertical shafts 10 on both sides rotate relative to each other, the pulling rope 15 can be wound or loosened. The bottom end of the vertical shaft 10 is fixedly connected with a driven cone. The bottom end of the driven bevel gear is meshed with a driving bevel gear, a drive shaft 5 is arranged inside the sealing frame 9, and the driving bevel gear is fixedly sleeved on the outside of the driving shaft 5, and one end of the driving shaft 5 is connected to the sealing frame. 9. The inner wall is rotatably connected, the other end of which passes through the sealing frame 9 and the outer casing 1 and extends to the outside of the outer casing 1, and the end extending to the outer side of the outer casing 1 is connected with the driving motor 2, and the driving motor 2 is fixedly connected to the side of the outer casing 1. Specifically, Ground, the drive shaft 5 is rotatably connected with the sealing frame 9 and the housing 1 , and the output shaft of the drive motor 2 is rotatably connected with the drive shaft 5 .

In specific use, the drive shaft 5 is driven to rotate by the drive motor 2, thereby driving the driving bevel gear to rotate, and the vertical shaft 10 can be driven to rotate through the meshing of the driving bevel gear and the driven bevel gear. When the ends are wound, the pull rope 15 can be gradually straightened, thereby driving the rotating plate 6 to rotate outward. reset.

As shown in Figures 3, 5-9, and 11-13, buffer pads 16 are fixedly connected to both ends of the rotating plate 6, and the buffer pads 16 are made of rubber or latex materials. , can drive the two rotating plates 6 in the same group to rotate relative to each other and finally follow the straight line to be in an aligned state. At this time, the two rotating plates 6 in the same group will be on the same straight line, further making a plurality of rotating plates 6 at the air inlet. 4 are on the same line.

Further, the rotating plate 6 and the buffer pad 16 are provided with a through guide groove 19, and the pull rope 15 passes through the buffer pad 16 and the rotating plate 6 through the guide groove 19. When the multiple rotating plates at the air inlet 4 When they are in the same straight line under the force of the tensioning rope 15, the plurality of rotating plates 6 are aligned with the guide grooves 19 on the buffer pad 16, so that the plurality of rotating plates 6 are connected to each other.

Furthermore, an air guide hole 18 is opened on the outer surface of the rotating plate 6 , and the air guide hole 18 communicates with the guide groove 19 , so that the gas entering the guide groove 19 can be discharged through the air guide hole 18 .

Here, the positioning shafts 17 on the rotating plates 6 of the same group are arranged on the outer side of the opposite outer side, so that the positioning shafts 17 between adjacent groups are close to each other. The two rotating plates 6 in the group are close to each other. At this time, the ends of the two rotating plates 6 in the same group that are close to each other contact each other and squeeze the buffer pad 16, and finally are in a collinear state. When the rotating plates 6 are close to each other, two rigid extrusions are avoided. Through the deformation of the buffer pad 16, on the one hand, the two rotating plates 6 can be rotated to a collinear state to avoid interference. The two buffer pads 16 can improve the tightness of the connection between the two rotating plates 6, so that the airflow can stably flow between the two adjacent rotating plates 6. Similarly, the adjacent two groups of rotating plates 6 pass through the rotating plate 6. The provided buffer pads 16 can also be pressed against each other to improve the sealing performance of the connection, and due to the existence of the buffer pads 16, when the adjacent two groups of rotating plates 6 are rotated to be collinear, the buffer pads 16 that were originally pressed gradually gradually The rotating plate 6 between each group is connected and connected, and the rotating plate 6 located at the front and rear edges of the air inlet 4 is in the process of rotating, and the buffer pads 16 on it are connected to the front and rear sides of the air inlet 4. The walls are in contact and squeezed, thereby sealing the air inlet 4. So far, the air inlet 4 can be sealed when the pulling rope 15 is stretched to drive the plurality of rotating plates 6 to be in a collinear state.

In actual use, a fixed frame 8 is fixedly connected to the inside of the sealing frame 9, and the cooling fan is fixed inside the fixed frame 8. Here, the space in the sealing frame 9 is set as an accommodation chamber 23, and the inner wall of the casing 1 is located here. The accommodating chamber 23 is provided with an air inlet groove 22. The air inlet groove 22 is set to be L-shaped, one end of which is connected to the accommodating chamber 23, and the other end is connected to the air inlet 4. When the plurality of rotating plates 6 are collinear At the time, the rotating plate 6 at the edge communicates with the air inlet groove 22 through the guide groove 19 , so that the air in the accommodating chamber 23 can enter the rotating plate 6 through the air inlet groove 22 .

In actual use, when the first filter screen 3 needs to be cleaned, the pull rope 15 can be stretched to drive the plurality of rotating plates 6 to be collinear. At this time, the air inlet 4 can be sealed by the collinear rotating plates 6. So far, the accommodating chamber 23 inside the entire sealing frame 9 is only connected to the cooling fan, and the fan blades 24 are driven to reverse by the servo motor 25, so that the airflow flows into the accommodating chamber 23, and then flows through the air inlet slot 22 to rotate. At the guide groove 19 on the plate 6, the plurality of rotating plates 6 are connected to each other through the guide groove 19, so that the air flow quickly fills all the rotating plates 6, and finally discharges through the guide hole and hits the first filter screen 3. Clean the first filter screen 3;

Specifically, in the process that the pull rope 15 is stretched and drives the rotating plate 6 to be collinear, the connecting belt 7 is blown by the fan blade 24 reversely, so that it is placed on the outside of the rotating plate 6, and the opening on the rotating plate 6 The guide hole is in an inclined state and is inclined toward the connecting belt 7 placed on the outside of the rotating plate 6, so when the airflow discharged through the guide groove 19 and the guide block will also hit the connecting belt 7, thereby blowing the connecting belt 7 to swing and connect with the first When the filter screen 3 is in contact, the connecting belt 7 moves on the side of the first filter screen 3, which is beneficial to remove the dust adhering to the first filter screen 3. At this time, the air flow discharged from the guide hole can lift the dust The dust is blown away, thereby cleaning the first filter screen 3. Here, the first filter screen 3 can have a good cleaning effect through the cooperation of the connecting belt 7 and the guide hole, and the air inlet 4 is collinear during the cleaning process. The plurality of rotating plates 6 are sealed, so the raised dust will not enter the inside of the casing 1, so as to protect the frequency converter inside the casing 1. During actual use, the wind force generated by the fan blades 24 is adjusted to adjust the discharge through the guide block. The force acting on the connecting belt 7 can drive the connecting belt 7 to swing on the first filter screen 3 , which is beneficial to further improve the cleaning effect of the first filter screen 3 .

To sum up, the device can protect the inverter well by sealing the air inlet 4 with the co-linear rotating plate 6 during the cleaning of the first filter screen 3 to prevent dust from entering the casing 1 .

As shown in Figures 3 and 5 , the top and bottom of the air inlet 4 are fixedly connected to the top and bottom of the casing 1. The blocking bars 14 are placed inside the sealing frame 9. When the fan blade 24 rotates, the air in the external environment is driven to pass through. When the connecting belt 7 enters the inside of the casing 1, the connecting belt 7 will be stretched, and at this time, the baffles 14 are placed on the top and bottom of the connecting belt 7, which can prevent the airflow from entering the casing 1 through the gap between the top and bottom ends of the connecting belt 7. Inside, it is beneficial to improve the efficiency of filtration and has strong practicality.

Here, a temperature sensor can be provided inside the housing 1, and the connection end of the temperature sensor is electrically connected with a controller, which can be a single-chip microcomputer or a PLC, and the controller is electrically connected with the driving motor 2. When the temperature sensor detects that the housing 1 When the internal temperature changes, this analog signal can be sent to the controller, and the drive motor 2 can be controlled after analysis and processing by the controller. In actual use, the drive motor 2 and the servo motor 25 can also be embedded with wireless transmitters , so that the staff can remotely control the drive motor 2 and the servo motor 25, so as to facilitate the use and operation.

Claims (9)

1. The utility model provides a novel easily dispel heat converter, includes the shell, and air intake and air exit have been seted up respectively to the both sides of shell, the outside of air intake is provided with first filter screen, the outside of air exit is provided with the second filter screen, the inside air intake department of being close to of shell is provided with radiator fan, shell internally mounted has converter main part, its characterized in that: a plurality of rotating plates are rotatably arranged at the air inlet, two adjacent rotating plates are arranged into a group and are arranged in a splayed shape, and a connecting belt is connected between the two rotating plates in the same group;

the rotating plates are provided with adjusting components, and when the heat in the shell is high, the adjusting components drive the two rotating plates in the same group to be away from each other so as to stretch the connecting band.

2. The novel frequency converter easy to dissipate heat according to claim 1, characterized in that: the adjusting component comprises a pull rope arranged at the air inlet, one end of the pull rope is arranged in the shell, the other end of the pull rope extends to the air inlet through the inside of the shell, and the pull rope is wavy and sequentially penetrates through the rotating plates and then extends into the inner cavity of the shell again.

3. The novel frequency converter easy to dissipate heat according to claim 1, characterized in that: be provided with the location axle on the rotor plate, the location axle run through the rotor plate and with rotor plate fixed connection, the top and the bottom that lie in the air intake on the shell have all been seted up spacing hole, the top and the bottom of location axle all extend to spacing downthehole portion and rotate with the shell and be connected, spacing downthehole portion is provided with the wind spring, the outside of location axle is located to the wind spring cover, the one end of wind spring and the inner wall fixed connection in spacing hole, the other end of wind spring is fixed mutually with the lateral surface of location axle.

4. The novel frequency converter easy to dissipate heat according to claim 2, characterized in that: the improved gear transmission mechanism is characterized in that a vertical shaft is arranged inside the shell, two ends of the pull rope, which are arranged in an inner cavity of the shell, are fixedly connected with the vertical shafts on two sides respectively, a driven bevel gear is fixedly connected to the bottom end of the vertical shaft, a drive bevel gear is meshed to the bottom end of the driven bevel gear, a drive shaft is arranged inside the shell, the drive bevel gear is fixedly sleeved on the outer side of the drive shaft, a drive motor is arranged on the side face of the shell, and the drive shaft is in transmission connection with the drive motor.

5. The novel frequency converter easy to dissipate heat according to claim 4, characterized in that: the two ends of the rotating plates are fixedly connected with cushion pads, when the pull ropes are stretched straight gradually, the rotating plates in the same group are driven to rotate relatively and are finally aligned along the stretched straight lines, and therefore the rotating plates are located at the air inlets and are located on the same straight line.

6. The novel frequency converter easy to dissipate heat according to claim 5, characterized in that: the air inlet guide device is characterized in that through guide grooves are formed in the rotating plates and the buffer pads, the pull rope penetrates through the buffer pads and the rotating plates through the guide grooves, when the rotating plates at the air inlet are positioned on the same straight line under the action force of the straightening pull rope, the rotating plates are aligned with the guide grooves in the buffer pads to enable the rotating plates to be mutually communicated, inclined air guide holes are formed in the outer side faces of the rotating plates, and the air guide holes are communicated with the guide grooves.

7. The novel frequency converter easy to dissipate heat according to claim 6, characterized in that: the shell inboard is located the sealed frame of fixedly connected with of air inlet department, the fixed frame of the inboard fixedly connected with of sealed frame, radiator fan fixes inside this fixed frame, space in the sealed frame sets up to holding the cavity, the shell inner wall is located this and holds and has seted up the intake stack in the cavity, the intake stack sets up to the L type, intake stack one end switches on with holding the cavity mutually, the intake stack other end switches on with the air intake mutually, and when a plurality of rotor plates collineation, the rotor plate that is located the edge switches on with the intake stack mutually through the guide way.

8. The novel frequency converter easy to dissipate heat according to claim 7, characterized in that: the top and the bottom of the inner side of the shell, which are positioned at the air inlet, are fixedly connected with barrier strips, and the barrier strips are arranged inside the sealing frame.

9. The novel frequency converter easy to dissipate heat according to claim 7, characterized in that: the vertical shaft is rotatably connected to the top end inside the sealing frame, one end of the driving shaft is rotatably connected with the inner wall of the sealing frame, and the other end of the driving shaft penetrates through the sealing frame and the shell and extends to the outer side of the shell.

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