Backpack type frequency converter

Abstract

The utility model discloses a backpack type frequency converter, the structure of which comprises a control box, an adapter plate and a motor, the adapter plate is used for fixedly connecting the control box to the motor, the control box further comprises a main shell and a surface shell, the main shell is further provided with a preformed groove, the preformed groove is matched with a mounting piece on one side of the motor, and the mounting piece is arranged on the surface shell. The face, opposite to the motor, of the main shell is a concave face, the angle of the concave face is matched with the outer arc of the motor, the concave face, opposite to the motor, of the main shell is further provided with cooling fins, the cooling fins are arranged right opposite to an air hole in the tail of the motor, and cooling is conducted based on the motor. According to the backpack type intelligent frequency converter, the frequency converter is combined with the structure improvement of the outer contour of the motor, the main shell which is integrally cast iron and is provided with the radiating fin structure is adopted, and the frequency converter is simultaneously radiated based on the radiating fan blades of the motor, so that the space occupation, the material consumption and the power consumption of an independent radiating assembly of the frequency converter are reduced; the structure also enables the frequency converter and the motor not to be easy to loosen and fall off during installation.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump control, in particular to a backpack frequency converter. Background Art

[0002] The backpack water pump inverter consists of a casing and components such as a PCBA board and a power tube arranged inside the casing. The external installation space of the inverter is limited in height and width, and at the same time it must meet the mechanical use environment requirements of impact vibration and acceleration.

[0003] Usually the motor housing wiring cover is a cubic structure, which includes a housing and a mounting structure connecting the housing and the motor wiring cover. The mounting part hides the motor wiring cover well inside the housing, and the appearance is beautiful and coordinated; when installing, first fix the mounting part to the motor wiring box, put the housing directly into it, and then fix two screws. The housing is actually hung, and the two screws actually fix vibration and jump out. The housing itself has heat dissipation teeth, which are very easy to fit to the motor heat dissipation surface to dissipate heat together. This mechanism does not need to install a fan to dissipate heat well. Utility Model Content

[0004] In view of the prior art, the purpose of the utility model is to provide a backpack-type inverter structure design, which can not only reduce the space occupied by the inverter, but also improve the heat dissipation effect of the inverter and perfectly combine the inverter and the motor by improving the inverter housing and mounting parts and coordinating them with the motor.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a backpack inverter, including a control box and a motor controlled by the control box, a mounting piece is provided on one side of the motor, and also includes an adapter plate for connecting and installing the control box and the motor, the adapter plate is threadedly fixed to the mounting piece, the adapter plate is provided with an insert and a mounting hole, a pressure plate is bolted to the bottom of the control box, a slot matching the insert is provided between the pressure plate and the control box, and a screw hole groove corresponding to the mounting hole is also provided on the control box.

[0006] As a further configuration of the above scheme, the control box includes a main shell and a face shell, the face shell is fixed on the main shell, and the two clamp and fix the PCB board, the main shell is also provided with a reserved groove, the reserved groove is matched with the mounting part on one side of the motor, the main shell is concavely arranged on one side relative to the motor, and the concave angle matches the arc surface of the outer contour of the motor, and the concave surface of the main shell relative to the motor is also provided with cooling fins, and the cooling fins are arranged facing the wind hole at the tail of the motor.

[0007] As a further configuration of the above scheme, a wind shield is provided at the tail of the motor, a plurality of fins are provided circumferentially of the motor, the wind holes are provided between the wind shield and the motor housing, and the wind is guided along the direction in which the fins are provided.

[0008] As a further configuration of the above solution, a capacitor slot is provided on the main shell, and the capacitor slot is matched with the capacitor provided on the PCB board.

[0009] As a further configuration of the above scheme, a wire shell cover is also provided on the face shell, and the wire shell cover is connected to the face shell by screws to fix and close the wiring slot.

[0010] Beneficial effect: The backpack-type intelligent control inverter of the utility model makes full use of the space inside the inverter, combines the reasonable design of the outer contour of the motor, improves the structure of the inverter shell, and sets a main shell made of one-piece cast iron with a heat dissipation fin structure. The inverter is cooled simultaneously based on the heat dissipation blades of the motor itself, which not only reduces the space occupation, material consumption, and power consumption of the independent heat dissipation components of the inverter itself, but also compared with the small heat dissipation fan matched with the general inverter in the prior art, the wind force brought by the large motor will be greater, and the heat dissipation effect it produces should also be stronger. Therefore, the heat dissipation effect of the inverter can be improved. In addition, the matching installation structure not only makes the inverter and the motor stably installed in a reasonable space, and is not prone to loosening and falling off, but also reduces the space occupation, which is more beneficial to the installation of the product on the equipment, and the matching sales and use are also more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the inverter and motor structure of the utility model.

[0012] Figure 2 This is a schematic diagram of the combined structure of the frequency converter and the motor of the utility model.

[0013] Figure 3 This is a schematic diagram of the installation of the inverter and the motor of the utility model.

[0014] Figure 4 It is a structural schematic diagram of the frequency converter of the utility model.

[0015] Figure numerals: 1, control box; 10, wiring slot; 11, face shell; 12, main shell; 13, wire shell cover; 14, reserved slot; 15, PCB board; 151, capacitor; 152, capacitor slot; 18, heat sink fin; 19, adapter plate; 191, pressure plate; 192, mounting hole; 193, slot; 194, plug; 2, motor; 21, wind cover; 22, wind hole; 24, mounting part. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] like Figure 1-4 A backpack inverter is shown, including a control box 1 and a motor 2 controlled by the control box 1, a mounting member 24 is provided on one side of the motor 2, and an adapter plate 19 for connecting and installing the control box 1 and the motor 2, the adapter plate 19 is threadedly fixed to the mounting member 24, and an insert 194 and a mounting hole 192 are provided on the adapter plate 19, a pressure plate 191 is bolted to the bottom of the control box 1, a slot 193 matching the insert 194 is provided between the pressure plate 191 and the control box 1, and a screw hole groove corresponding to the mounting hole 192 is also provided on the control box 1.

[0018] As a further configuration of the above scheme, the control box 1 includes a main shell 12 and a face shell 11, the face shell 11 is fixed on the main shell 12, and the two clamp and fix the PCB board 15, the main shell 12 is also provided with a reserved groove 14, the reserved groove 14 is matched with the mounting piece 24 on one side of the motor 2, the main shell 12 is concavely arranged on one side relative to the motor 2, and the concave angle matches the outer contour arc surface of the motor 2, and the concave surface of the main shell 12 relative to the motor 2 is also provided with a cooling fin 18, and the cooling fin 18 is arranged opposite to the wind cavity 22 at the tail of the motor 2.

[0019] As a further configuration of the above scheme, a wind cover 21 is provided at the tail of the motor 2, a plurality of fins are circumferentially provided on the motor 2, and the wind cavity 22 is provided between the wind cover 21 and the motor 2 housing, and guides the wind along the direction in which the fins are provided.

[0020] As a further configuration of the above scheme, a capacitor slot 152 is provided on the main shell 12 , and the capacitor slot 152 is matched with the capacitor 151 provided on the PCB board 15 . This structural design is mainly used to adaptively improve the space occupied by the capacitor 151 on the PCB board 15 .

[0021] As a further configuration of the above scheme, a wire housing cover 13 is further provided on the face shell 11, and the wire housing cover 13 is connected to the face shell 11 by screws to fix and close the wiring slot 10. The configuration of the wiring slot 10 of this embodiment and the matching wiring head are as follows. Figure 4 As shown, the control box 1 of this embodiment can be easily wired and the wiring points can be protected.

[0022] Example: Figure 1-2The intelligent frequency converter of the present embodiment shown in FIG. 1 is connected and fixed to the motor 2 in a backpack-like manner. Figure 3 The control box 1 of the present embodiment shown in the figure is connected to the motor 2 by using an adapter plate 19. The installation process includes: firstly, fixing the pressing plate 191 to the corresponding position of the main shell 12 of the control box 1 by screws, such as Figure 3 After the pressure plate 191 is installed, a slot 193 is formed between the pressure plate 191 and the main housing 12. Then, the adapter plate 19 is screwed to the corresponding mounting member 24 on the motor 2. The motor 2 of this embodiment will correspondingly adopt a mounting member 24 structure that matches the adapter plate 19. After the installation is completed, the adapter plate 19 has a plug 194 at one end and a folded edge at the other end, and a mounting hole 192 is provided on the folded edge. Figure 3-4 As shown, the plug 194 matches the slot 193. During installation, the control box 1 and the motor 2 need to be horizontally aligned, and then relatively close to each other along the axial direction of the motor 2, and the plug 194 is aligned with the slot 193 so that the two can be plugged in. At this time, after the plugging is completed, the folded edge is just in contact with one side of the main shell 12, and the mounting hole 192 is also opposite to the prefabricated screw hole on the main shell 12. They can be connected by screws, so that the adapter plate 19 fixes the control box 1, so that the motor 2 and the control box 1 are quickly and stably connected and fixed. At this time, as shown in FIG. Figure 1 , 2 As shown, the motor 2 and the control box 1 are in a backpack type, and the control box 1 is concave and half-wrapped on the outside of the barrel-shaped motor 2, and a heat dissipation fin 18 is arranged on the control box 1 between the two. The motor 2 corresponding to the heat dissipation fin 18 is the tail of the motor 2, and a wind hole 22 is left between the wind cover 21 at the tail of the motor 2 and the motor 2 shell. The airflow blown out by the fan blade connected to the main shaft at the tail of the motor 2 is sprayed toward the front end of the motor, and sprayed toward the motor 2 shell along the fan cover 21 of the motor 2, and the heat dissipation fin 18 is dissipated at the same time, so as to form enhanced heat dissipation of the control box 1. Compared with the prior art, this embodiment improves the structure of the control box 1 so that it is installed in conjunction with the motor 2, which not only reduces the space occupancy, but also reduces the consumption of independent heat dissipation of the control box 1, the installation space, etc., and the motor 2 matched with the control box 1 that generally needs to be cooled is generally a high-power motor, and the heat dissipation effect of a small fan with relatively independent heat dissipation of the fan blades of this type of motor 2 should be better.

[0023] The backpack-type intelligent inverter of the utility model improves the structure of the inverter combined with the outer contour of the motor, adopts an integrated cast iron main shell with a heat dissipation fin structure, and dissipates heat for the inverter simultaneously based on the motor heat dissipation blades, thereby reducing the space occupation, material consumption, and power consumption of the independent heat dissipation components of the inverter. The connection method between the motor and the control box is improved, and the design of the adapter plate can be quickly connected and disassembled. This structure also makes it difficult for the installation of the inverter and the motor to loosen or fall off.

[0024] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A backpack frequency converter, comprising a control box (1) and a motor (2) controlled by the control box (1), characterized in that: A mounting member (24) is provided on one side of the motor (2), and also includes an adapter plate (19) for connecting and mounting the control box (1) and the motor (2); the adapter plate (19) is threadedly fixed to the mounting member (24); an insert (194) and a mounting hole (192) are provided on the adapter plate (19); a pressure plate (191) is bolted to the bottom of the control box (1); a slot (193) matching the insert (194) is provided between the pressure plate (191) and the control box (1); and a screw hole groove corresponding to the mounting hole (192) is also provided on the control box (1).

2. The backpack inverter according to claim 1, characterized in that: The control box (1) comprises a main shell (12) and a face shell (11), wherein the face shell (11) is fixed on the main shell (12), and the two clamp and fix a PCB board (15); the main shell (12) is also provided with a reserved groove (14), and the reserved groove (14) is matched with a mounting piece (24) on one side of the motor (2); the main shell (12) is provided with a concave surface on one side relative to the motor (2), and the angle of the concave surface matches the outer contour arc surface of the motor (2); the concave surface of the main shell (12) relative to the motor (2) is also provided with a heat dissipation fin (18), and the heat dissipation fin (18) is provided directly opposite to the wind hole (22) at the rear of the motor (2).

3. The backpack inverter according to claim 2, characterized in that: The motor (2) is provided with a wind shield (21) at the rear, the motor (2) is provided with a plurality of fins in the circumferential direction, the wind cavity (22) is provided between the wind shield (21) and the motor (2) housing, and guides the wind along the direction in which the fins are provided.

4. The backpack inverter according to claim 2, characterized in that: The main shell (12) is provided with a capacitor slot (152), and the capacitor slot (152) is matched with a capacitor (151) provided on the PCB board (15).

5. The backpack inverter according to claim 2, characterized in that: A wire housing cover (13) is also provided on the face housing (11), and the wire housing cover (13) is connected to the face housing (11) by screws to fix and close the wiring slot (10).

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