TWM350612U - Improved structure of electric box of inverter motor - Google Patents

Description

M350612 VIII. New description: [New technical field] This creation is about the improved structure of a variable frequency motor electrical box, especially an improved structure of a variable frequency motor electrical box suitable for use in a constant pressure hydraulic press. a [prior art]

According to the hydraulic presses currently seen on the market, there are mainly two types, one of which uses a pressure storage and a pressure switch to control the start of the motor to control the differential pressure hydraulic press that maintains the water supply line backup state; In order to use the pressure sensor to cooperate with the frequency converter to control the motor speed, the method of changing the motor speed is used to achieve the value of maintaining the steady pressure of the water supply pipeline. In the past, because the cost of the variable frequency motor was relatively expensive and the maintenance was not easy, most of the hydraulic presses were made of pressure differential type hydraulic presses using pressure storage barrels. However, the operation principle of the pressure differential type hydraulic press of the pressure storage barrel type was The pressure switch is used to sense the water pressure in the water supply pipeline. When the pipeline water pressure is lower than a lower pressure limit, the motor is started to pump water to increase the pipeline pressure: when the water pressure reaches the upper pressure, it is controlled. The motor stops running until the line pressure drops to the lower limit pressure, and the motor is started again. The main disadvantages of this type of differential pressure hydraulic press are: (丨). When the water pressure is in operation, the motor must start and stop very frequently, and the motor is most power-consuming at the moment of starting, thus making this kind of The hydraulic press is extremely power-intensive in operation: (2). After the hydraulic press motor starts, it will run at full speed immediately, which will cause the water supply line pressure to rise rapidly. On the one hand, the M350612 will cause the water supply line pressure to change rapidly. In addition to the instability of the water pressure, the motor will start (4), and the water supply pipe (four) will reach the upper limit of the pressure in a short time, so that the hydraulic motor must be stopped immediately after starting the motor, thus causing frequent motor starting. And more power is consumed.

The variable frequency constant pressure hydraulic press uses a pressure sensor in conjunction with a frequency converter to control the start, stop and speed of the motor. The second type of variable frequency motor is characterized in that it can start the motor in a soft start mode, so the power consumption is reduced when restarting. And because the frequency converter can control the speed of the motor', so when the water supply line pressure drops slowly, the frequency converter makes the controllable motor run at a lower speed, so that the pressure of the flood line becomes slower, so that The cycle of starting and stopping the motor is extended to save power. Because the frequency conversion type hydraulic press has the effect of saving energy, it meets the demands of energy saving and environmental protection in the society, so the application of the frequency conversion type water meter is more and more extensive. The main structure of the variable frequency motor includes a motor and a frequency controller. The inverter controller has a rectifying and converting wafer which generates high heat. Therefore, special attention must be paid to the heat dissipation problem of the inverter during use to avoid the inverter or Other circuit components burned out. The conventional variable frequency motor controllers are mainly divided into two types. One of them is to install the inverter and control circuit in a control box separate from the motor. The control box is equipped with a frequency converter and other a motor control circuit (including: a pressure control circuit, a power control circuit, a power supply, etc., and a cooling fan for cooling the heat of the frequency converter. The electrical box of the variable frequency motor controller of the separation is not integrated with the motor, and Because the 6 M350612 is to prevent the controller from being short-circuited by rainwater, the body of the electrical box will be slightly larger'. Therefore, the whole motor is hoarded and occupied by a large space. In addition, since the inverter inside the electrical box must be separated by a separate fan. To dissipate heat, because the cooling fan and motor are independent power systems Control, so if the fan fails, the motor and the inverter will continue to run, so that the user can not find the fault of the inverter cooling fan, and continue to use the motor and the inverter, which will cause the inverter to burn. produce.

Another variable frequency motor controller is mounted in an electrical box fixedly disposed on the motor body. The electrical box is a closed square box, and the inverter controller and the control circuit board are all accommodated in the electrical box. The inside of the body, so that the control substrate and the circuit components can be prevented from being splashed by rain by the protection of the electric tongs. However, the electrical box must be a completely closed box in order to prevent moisture from entering, which is only in the electrical box. The bottom plate is provided with a metal plate to reduce the temperature of the inverter controller and the circuit components by air cooling, so the heat dissipation efficiency is not good, and if it is used for a long time, it will easily cause overheating. The creators, in view of the shortcomings of the inverter motor box used in the past, are actively researching and researching and developing the experience of related product research and development for many years, and have finally developed the stripping work through continuous testing and improvement. [New content] The main purpose of this creation is to provide a variable frequency motor electrical box with a ventilation and heat dissipation effect, and at the same time, a device that prevents water from splashing into the interior of the electrical box and causes circuit components such as the inverter controller to be short-circuited by water. Improved structure. M350612 The structure of this creation mainly includes: a swing system can be installed on the top of a motor: and - accommodation (four), Xiao ^ (four) on the plane of the load; and a cover body is attached to the body Top surface. The foregoing reserve box system has an open bottom shape, a closed top box and a bottom plate at the bottom opening, and a control circuit board is provided on the bottom plate. The main feature of the creation is that the housing box is The top surface has a pass

The air hole is arranged to discharge the airflow inside the housing body, and a ventilation vent is provided on the side of the bottom of the accommodating case body to allow airflow to enter the space of the bottom of the accommodating case body; the top surface of the accommodating case body is provided with a cover body Between the cover body and the top surface of the accommodating box, there is a gap between the top surface of the accommodating case for airflow, and a shielding element is disposed on the top surface of the accommodating case body to block the inner side of the edge of the cover body, so that moisture cannot be The vent opening of the top surface of the accommodating case body is entered by the gap between the cover body and the top surface of the accommodating case. Further, a venting groove is provided in the ventilating groove at the bottom of the casing to prevent moisture from entering the inside of the accommodating case by the venting groove. Further, a wire hole is arranged on one side of the accommodating case body, so that the wire passes through the wire hole, and then passes through the top surface of the accommodating case body, and then is worn by a plurality of threading holes provided in the top surface of the accommodating case And connected to the circuit substrate. By the combination of the above components, the ventilation groove and the vent hole can form an air flow passage inside the gull box, thereby reducing the temperature of the internal circuit component of the accommodating box, and at the same time, by the function of the cover body and the blocking device. The internal circuit components of the accommodating case are protected from rainwater splashing, and the purpose of protecting the circuit components is achieved. Β M350612 In order to achieve the above and other objectives, the technical means, components and their functions are to be taken in the following examples and detailed descriptions are as follows. [Embodiment]

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the improved structure of the inverter motor electrical box of the present invention mainly comprises: a support frame 20 , which can be mounted on the body 11 of a motor 1 ;; and a housing 30, The device is mounted on the support frame 20 for accommodating a circuit board and a circuit component such as a variable frequency controller; and a cover 40 is attached to the front end of the body 11 of the motor 10 above the accommodating case 30. A socket 12 is disposed for the pump 13 to be mounted thereon: the body 丨 1 is provided with a fan 14 opposite to the other end of the socket 12, and is rotated by the rotating shaft 15 of the motor 1 to generate airflow. The utility model is characterized in that the heat generated by the internal parts during the operation of the motor is reduced; and a cover 16 is mounted on the outer side of the fan 4 to protect the fan 14 to prevent the fan U from colliding with other foreign objects and being damaged. The truss frame 20 used in the first embodiment of the present invention has a flat plate shape and is horizontally mounted on the body Π of the motor 1 。. One end of the support frame 20 is provided with a substantially 90-degree vertical mounting seat 2, which can be locked to the back surface of the socket 12 by a plurality of screws 22, so that the support frame 20 is horizontally mounted on the body on. As shown in FIG. 4, a plurality of screw seats 23' are disposed around the support frame 20 for the above-mentioned housing case 3 to be mounted thereon. Please refer to FIGS. 5 and 6 for the foregoing housing case 30. The box body 30 is open at the bottom, and the box body 30 is fixed to the support frame 30 of the M350612. The top surface of the frame is 2 inches. As shown in FIG. 5, FIG. 6, and FIG. 7, the upper portion of the accommodating case 30 has a top surface 31' and the bottom portion has an opening 32, and a bottom plate 50' is disposed in the opening 32 to make the accommodating case 3〇 The bottom is closed. The bottom plate 50 is made of a heat conductive metal, and a circuit component such as a circuit board 60 and a variable frequency controller can be placed thereon.

As shown in FIG. 7, the circuit board 60 is fixedly attached to the top surface of the bottom plate 50 in parallel with the bottom plate 50. The circuit board 60 is provided with a variable frequency chip (H, and other circuit components; The wafer 61 is in contact with the top surface of the bottom plate 50, so that the heat of the variable frequency wafer 61 can be conducted to the bottom plate 50, thereby lowering the temperature of the inverter controller. As shown in Fig. 1, the position of the housing case 30 is mounted. It is close to the upper side of the body 11 of the motor 10. When the motor 10 is in operation, the airflow generated by the fan 14 at the end of the motor 1 can be discharged from the gap between the cover 16 and the tail end of the body 11, and this airflow is directed toward the body 11. The front end of the flow can be passed through the lower portion of the cassette 30, so that the bottom plate 50 is in contact with the air flow, so that the heat of the bottom plate 50 can be carried away by the air flow, thereby achieving the purpose of lowering the temperature of the bottom plate 5 . As shown in FIG. 6 and FIG. 7 , in order to achieve a better heat dissipation effect, the accommodating box It 30 is provided with a ventilation vent 33 on its top surface 3 , for the airflow in the accommodating case 30 to reduce The housing case 3〇 The circuit board 60 and other circuit components have a temperature n and a mounting bar 36 is disposed on the top surface 31 for mounting a control panel 70 thereon. As shown in FIG. 7, the control panel 70 is The main circuit is connected to the circuit board 10 M350612 60. The main function is to provide an input interface and a display interface for the user to input and set various parameters of the operation of the circuit substrate 60 from the control panel 70, and Display data of various parameters in the circuit substrate 60 (for example, frequency, voltage of the inverter, water supply pressure setting value, etc.)

Further, since the motor 10 is installed outdoors, when the rainy day is encountered, the housing case 30 is also directly subjected to rainwater splashing. In order to prevent rainwater from entering the vent hole 33 or splashing onto the control panel 70, the circuit component inside the accommodating case 30 or the control panel 7 is wetted by water to cause a short circuit phenomenon. The upper end of the body 30 is further provided with a cover 40' for shielding the vent hole 33 and the control panel 7β. As shown in FIG. 5, the top surface 31 of the accommodating case 30 is provided with a plurality of erections 35' for the shoulders of the top surface 31. The cover 40 is locked to the top surface 31. The peripheral edge of the cover 40 has a downwardly extending flange 4, and the top surface 31 of the receiving box 30 is located adjacent to the inner side of the flange 41 with a blocking element 34: as shown in FIG. It is shown that when the cover 40 is closed on the top surface 31, a gap is secured between the inner side surface of the adhesive edge 4 and the shielding member 34. Further, as shown in FIG. 3 and FIG. When the 艏40 is capped over the accommodating case 30, a washer 38 may be fitted over the top 35 of the top surface of the accommodating case and the inner cover of the cover 40 to increase the locking of the cover 40 The height 'above the top surface 31' is such that a gap 42 is provided between the bottom edge of the flange 41 of the cover 4 and the top surface 31 of the receiving box 30, so that the airflow passes through The air flow of the vent 33 of 30 can pass through the gap. With the above design, the main feature is that the airflow between the accommodating case 〇3〇 and the cover can be kept unobstructed, so that the heat inside the accommodating case 30 of the 11 M350612 can be dissipated through the airflow discharged from the vent 33. Therefore, when the accommodating case 30 is subjected to rain water, moisture can enter from the gap 42 to the space between the cover 40 and the top surface 31 of the accommodating case 30, but due to the blocking action of the occluding member 34, The poured water does not splash into the vent 33, so that the circuit board 60 and other circuit components accommodating the inside of the casing 30 can be prevented from being short-circuited by rainwater, so that the heat dissipation effect can be ensured and the circuit can be ensured. Component safety beta

In addition, the cover 40 can also be directly locked on the top surface 31 of the accommodating case 30, so that the accommodating case 30 and the cover 40 form a sealed state. In this state, the airflow of the vent 33 Although it is impossible to circulate, the heat dissipation effect is lost, but since the top surface of the housing case 30 is formed in a completely close state, an optimum waterproof effect can be achieved. Another design focus of the present invention is that the accommodating case 30 and the cover 40 are provided with a winding hole through which the power line and the wire of the circuit board 60 are placed, and are hidden from a position where water is not easily poured. A hole that prevents moisture from penetrating from the wire is inserted into the inside of the housing case 30. As shown in FIG. 6, a side wall of the inner side of the accommodating case 30 is provided with a partition plate 37 such that a side of one side of the inner side of the accommodating case 30 forms an elongated slot 80: as shown in FIG. When the bottom plate 50 is covered at the bottom of the accommodating case 30, the slot 80 is not shielded by the bottom plate 50, so that the narrow ridge 80 is in an open state. A plurality of wire holes 8 are disposed in the slot 80 to penetrate from the bottom surface of the accommodating case 30 to the top surface of the accommodating case body: at the same time, as shown in FIG. 5, the accommodating case 30 is adjacent to the top surface 31 thereof. The wire hole 81 and the inner side of the shielding element 34 are provided with a plurality of threading holes 39 corresponding to the wire holes 8丨. In addition, a plurality of circular arc-shaped notches 341 are disposed on the cover member 34 of the cover M350612. As shown in FIG. 7, the wire 8 2 penetrates from the bottom of the wire hole 8丨, and from the top surface of the housing case 30. After passing through the notch 341 of the shielding member 34, the re-folding is penetrated from the threading hole 39 into the inside of the housing case 30, and is connected to the circuit board 60.

The above design of the wire hole and the threading hole allows the hole 82 to penetrate into the accommodating case 30 to be hidden inside the cover 40 and the shielding member 34, thereby making it difficult for rainwater to pass from the threading hole 39. The gap between the wires 82 penetrates into the inside of the housing case 30, thereby further protecting the circuit components on the circuit substrate 60 from short-circuiting with water. In addition, as shown in FIG. 6 and FIG. 7 , a ventilation groove 371 is disposed at the bottom of the partition plate 37. Since the ventilation groove 371 is located at the bottom position of the accommodating case 30, the airflow accommodating the outside of the casing 30 can be After entering the slot 80, the venting groove 371 enters the inside of the accommodating case 30, thereby generating an air flow from the side of the bottom of the accommodating case 30 into the inside of the accommodating case 30. On the other hand, since the inverter chip 61 on the circuit board is disposed at the bottommost position of the bottom plate 50, the airflow entering from the ventilation groove 371 can just contact the inverter chip 61, and the temperature of the inverter chip 61 can be lowered. Moisture splashed from the body 1 of the motor 10 is prevented from entering the venting groove 371, and a blocking device 90 may be disposed inside the slot 80. As shown in FIG. 3 and FIG. 7 , the blocking device 90 includes a bottom plate 91 which is an elongated plate body that can be shielded from the opening position of the slot 80 , and a plurality of notches 93 are defined in the bottom plate 91 . The airflow can be made to enter the inside of the narrow bore 80 from the notch 93; and a shielding piece 92 is perpendicular to the bottom plate 91 and has a height slightly higher than the height of the air vent 371. As shown in FIG. 7, when the blocking device 90 is installed in the narrow ridge, the shielding piece is inserted into the inside of the slot 80, but is spaced apart from the partition 37 of the accommodating case 3〇. Therefore, the airflow entering the slot 8 from the notch 93 of the bottom plate 91 can bypass the shielding piece 92 and then enter the ventilation groove 371.

By the isolation of the blocking device 90, the ventilation groove 371 can maintain the state in which the airflow flows, but the moisture can be blocked by the shielding piece 92 without being splashed from the ventilation groove 371 to the inside of the housing case 3艚. Therefore, it is ensured that the circuit elements on the circuit substrate 60 do not cause a short circuit phenomenon. The housing case 30 of the present invention has a ventilation groove 37 at the bottom, and a vent 33 is provided on the top surface. Therefore, when the internal circuit components generate heat, the airflow is automatically ventilated from above due to the principle of rising hot air. The air is discharged from the air, and the cold air from the outside is automatically occupied from the ventilation slot 371 by the principle of convection, thereby forming an airflow ring that enters from the bottom of the housing case 3 and is discharged from the air vent 33, and can Take away the thermal energy generated by the circuit components that house the inside of the case. In addition, in order to achieve better heat dissipation effect, the present invention can be provided with a fan (not shown in the circle) in the vent 33 for forcing the airflow to be discharged from the vent, and the heat dissipation effect of the forced exhaust Λ In order to enable the aforementioned accommodating case 30 to be mounted on a variable-profile motor of different configurations, the present invention can be used with a motor of a different configuration by modifying the configuration of the aforementioned support frame 2〇. As shown in FIG. 8, the second embodiment of the present invention is a second embodiment in which the support frame 2 includes a wiring box 21: as shown in FIG. 9, the wiring box 2U is a box having a square shape. The body is lockable on a base 14 M350612 11A of a motorized rafter. One example of the wiring box 21 is a closed bottom plate 27A, and the bottom plate 27A can be attached to the base 丨丨a of the motor 丨 a, and a threading hole 271A is disposed at the center thereof. The power supply line for the motor 丨〇Λ is provided: the other side is open, and a cover 28A is locked to the opening to make the distribution box 21A closed to protect the distribution box. The line inside the 21A.

The wiring box 21 has a vertical portion 22A above it, and an engaging portion 23 is provided at the end of the vertical portion 22A. And a horizontal frame 24Α, which is generally flat, and has a plurality of screw seats 25Α on the top surface thereof for locking the lugs 32 of the receiving box body 30 thereon; and is disposed at the end of the horizontal frame body 24Α There is a gate-shaped engaging portion 26Α. As shown in FIG. 9 , the engaging portion 26 can be engaged with the engaging portion 23 , and locked by a plurality of screws, so that the horizontal frame 24 Λ and the wiring box 21 连接 are connected and fixed at an angle of 90 degrees. Together. As shown in FIG. 9, the wiring box 21 is fixed to the outside of the base 1U on the side of the motor 10 in the vertical direction, so that the horizontal frame 24 can be mounted on the motor 丨0Α in a horizontal state. Therefore, the aforementioned housing case 30 can be horizontally mounted above the motor 1A. By combining the above components, the system can achieve the effect of improving the heat dissipation and ventilation of the electrical box of the inverter motor, so that the frequency conversion chip is not easy to overheat and burn, and at the same time, the waterproof and isolation protection effect of the electrical box can be taken into consideration, and the circuit components are protected from rain and water. A situation in which the last name is destroyed. At the same time, the design of the creation can break through the limitations of the conventional variable frequency motor electric box directly mounted on the motor body, so that it can also have the function of ventilation and heat dissipation, thereby achieving the requirements of miniaturization and heat dissipation performance. In addition, it can directly place the control panel 70 on the M350612, so that the miniaturized variable frequency motor electrical box of this type also has the function of directly inputting and (4) controlling the material (4), and achieving the effect of easy adjustment and maintenance. [Simple description of the diagram] 圊1 is the side view circle of the combination of creation and a motor. Figure 2 is a three-dimensional combination diagram of the creation. Figure 3 is an exploded view of the stand of the creation.

Figure 4 is a perspective view of the support frame used in the first embodiment of the present invention. Fig. 5 is a perspective view of the housing case of the present invention. Figure Θ is a three-dimensional view of the housing of the creation from the bottom. Fig. 6A is a perspective view of the accommodating case body and a bottom plate in a state in which it is inspected by the bottom surface. Fig. 7 is a sectional view showing the combination of the improved structure of the variable frequency motor air clamp of the present invention. Figure 8 is an exploded perspective view of the support frame of the second embodiment of the present invention. Figure 9 is a combination view of the second embodiment of the support frame mounted on the motor. [Main component symbol description] 10, 10Λ Motor 11 Main body 11Λ Base 12 Seat 13 Pump 14 Fan 15 Rotary shaft 16 Cover 20 Support frame 21 Mounting seat 22 Screw 23 Screw seat 1.6 M350612

30 accommodating case 31 top surface 32 opening 32 凸 lug 33 vent 34 shielding element 341 notch 35 post 36 mounting hole 37 partition 371 ventilation slot 38 washer 39 threading hole 40 cover 41 & edge 42 gap 50 bottom plate 60 circuit board 61 Inverter chip 70 Control panel 71 Cable 80 Slot 81 Wire hole 82 Wire 90 Barrier 91 Back plate 92 Shield 93 Notch 20 支撑 Support frame 21 Λ S wire box 22A Vertical part 23 衔 Connection part 24A Horizontal frame 25 螺丝 Screw holder 26A card Joint 27Λ bottom plate 271Λ threading hole 28Λ cover plate 17

Claims (1)

Edited 50612 Nine, the scope of application for patents: 1. An improved structure of an electric motor box for a variable frequency motor, comprising: a support frame, which is mounted above a body of a motor; and a yano box body mounted on the support frame; the accommodating case The system is closed at the top end, and the bottom portion is in an open state; and a bottom plate is disposed at the bottom opening of the body, is made of a heat conductive metal material, and is provided with a control circuit board thereon; The top surface of the body has a heat dissipation hole, and a cover body is covered on the top surface to shield the heat dissipation hole: a gap can be maintained between the cover body and the top surface of the housing body to ensure airflow Passing through the gap; and further comprising: a shielding element ′ vertically protruding and surrounding an edge of the top surface of the receiving box body, and maintaining a gap with the edge of the cover body, so that airflow can be from the shielding element and the cover body a gap between the edges passes; and a slot is disposed on an outer side of one side of the receiving box; the slot is spaced apart from the side receiving box. Zhao has a partition, and a bottom is provided at the bottom of the partition Missing U a venting groove, such that airflow can enter the bottom of the interior of the accommodating case; and a blocking device is disposed in the slot for blocking moisture from entering the accommodating case And a plurality of wire holes are disposed in the slot and penetrate from the bottom of the housing body to the top surface of the housing body; and a plurality of threading holes are disposed on the top surface of the housing body The plurality of wire holes are adjacent to the wire so that the wire connected to the circuit board can penetrate from the wire hole and pass through from the top surface of the housing body, and then reflexly penetrates from the threading hole into the housing body 18 •M350612,· k ---^ %W|\hi Correction L And connected to the circuit board. 2. The improved structure of a variable frequency motor electrical box as described in claim </RTI> wherein the venting opening is provided with a fan to drive airflow from the venting opening. 3. The improved structure of the variable frequency motor electrical box according to the invention of claim 4, wherein the top surface of the body is further provided with a mounting hole for providing a control panel device in the mounting hole; the control panel is The wire is coupled to the aforementioned control circuit substrate such that an operator can set operational parameters of the control circuit substrate from the control panel. 4. The improved structure of the inverter motor electrical box according to claim 1, wherein the top surface of the body is provided with a mounting hole for mounting a control panel, and the control panel and the control circuit board are The appropriate technical means are connected so that the user can input the operating parameters of the control circuit board from the control panel. 5. The improved structure of the inverter motor electrical box according to claim 1, wherein the blocking device comprises: a bottom plate, which is disposed at an opening of the slot: and a plurality of notches, which are disposed on the bottom plate Above, the airflow can enter the slot from the gap; and a shielding piece is perpendicular to the bottom plate and can be shielded from the outside of the ventilation groove of the partition. 6. The invention relates to a modified motor electrical box improved junction 19 M35ft612 structure according to the first aspect of the patent scope, wherein the support frame is substantially flat and has a mounting seat, and the mounting seat can be locked to the foregoing. The motor is coupled to the back of the base of the pump, and the support is mounted on the motor in a horizontal direction. 7. The invention relates to an improved structure of a variable frequency motor electrical box according to item i of the patent garden, wherein the support frame comprises: a wiring box fixed to a side of a motor; and a vertical portion disposed on the wiring Above the box, an end portion of the vertical portion is provided with an engaging portion; and a horizontal frame body is provided for the receiving box body to be mounted on the top surface thereof, and one end of the horizontal frame body is provided with an engaging portion for connecting with the punching portion 'The horizontal frame is fixed to the wiring box at an angle of 90 degrees to the vertical portion. 20