Reasonably-arranged controller for intelligent permanent magnet variable frequency pump

Abstract

The utility model relates to a reasonable-layout controller for an intelligent permanent magnet variable frequency pump, belongs to the field of pump controllers, and aims to solve the problem that the service life of an existing controller is affected due to unreasonable layout of the existing controller, the reasonable-layout controller for the intelligent permanent magnet variable frequency pump comprises an upper cover and a bottom box, and the upper cover and the bottom box define a containing space. A containing space is formed in the bottom box, a circuit board is arranged in the containing space, a heat dissipation step is arranged on the bottom box, a plurality of discrete power devices which are arranged at intervals are arranged on the circuit board, and the projection of each discrete power device in the vertical direction falls on the heat dissipation step. The discrete power device can also achieve a control effect, compared with an IPM module, the size is small, the weight is light, heat is not prone to being gathered, during setting, the projection of the discrete power device in the vertical direction falls on a heat dissipation step, the discrete power device does not need to be tightly attached to a heat dissipation component, the good heat dissipation effect is still achieved, and the service life of the controller is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of pump controllers, and particularly relates to an intelligent permanent magnet variable frequency pump controller with a reasonable layout. Background Art

[0002] The existing water pump controller contains a circuit board, and an IPM module is usually set on the circuit board. The IPM module is connected to the circuit board by screws. Since the IPM module has a certain weight and volume, it integrates many components inside and generates more heat when used. Therefore, the IPM module is set close to the heat dissipation area of ​​the controller, especially close to the heat sink, to have a significant heat dissipation effect; the IPM module dissipates heat through contact or convection heat exchange. Once the heat dissipation effect is not ideal, heat will accumulate inside the controller, which may seriously affect its own service life and thus affect the service life of the entire controller. Utility Model Content

[0003] In view of the problem that the unreasonable layout of the existing controller affects its own service life, the utility model provides a rationally arranged intelligent permanent magnet variable frequency pump controller, which disperses the heat and makes the layout reasonable by replacing the original IPM module, effectively reduces heat accumulation, and thus ensures the service life.

[0004] The utility model adopts the following technical solution: a rationally arranged intelligent permanent magnet variable frequency pump controller, comprising an upper cover and a bottom box, wherein the upper cover and the bottom box enclose a storage space, wherein a circuit board is arranged in the storage space, wherein the bottom box is provided with a heat dissipation step, wherein the circuit board is provided with a plurality of discrete power devices arranged at intervals, wherein the vertical projection of each discrete power device falls on the heat dissipation step.

[0005] Discrete power devices can also achieve control functions. Compared with IPM modules, they are small in size, light in weight, and heat is not easy to accumulate. When setting, the vertical projection of the discrete power device can fall on the heat dissipation step. It does not need to be close to the heat dissipation components. It still has a good heat dissipation effect and ensures the service life of the controller.

[0006] Furthermore, the bottom surface of the bottom box is convex to form the heat dissipation step, and a metal part is provided at the heat dissipation step, and the metal part includes a connected fixing part and a heat sink, and the fixing part is fixedly connected to the heat dissipation step, and the heat sink extends from the fixing part to the outside of the bottom box. The bottom box is convex to form a heat dissipation step on the inner side of the bottom box, and a concave cavity is formed on the outer side of the bottom box. The metal part extends into the concave cavity from bottom to top, and is fixedly connected to the heat dissipation step through a threaded connector. The bottom box body can be made of plastic parts, and the heat dissipation parts are made of metal parts with good thermal conductivity. This split structure can reduce the weight of the bottom box, ensure the heat dissipation effect, and is also easy to form.

[0007] Furthermore, the upper cover includes an extended edge, and the extended edge covers the upper part of the bottom box. The extended edge serves as a first waterproof structure, which can cover the matching part of the upper cover and the bottom box without exposing them, thus achieving a better waterproof effect.

[0008] Furthermore, a waterproof step that can be enclosed is provided on the top of the bottom box, and a convex edge that matches the waterproof step is provided on the inner side of the extension edge. The waterproof step and the convex edge cooperate to form a waterproof structure, which serves as a second waterproof structure to enhance the waterproof effect of the controller.

[0009] Furthermore, the convex edge is located on the upper part of the extended edge. When the convex edge is located on the upper part of the extended edge, the contact with water can be minimized.

[0010] Furthermore, the bottom box is provided with an assembly hole, the assembly hole is located outside the area surrounded by the waterproof step, the upper cover is provided with a connection hole adapted to the assembly hole, a connection piece passes through the connection hole and is limited in the assembly hole to connect the upper cover and the bottom box. When in use, water in the environment may remain in the assembly hole and the connection hole, and if the connection position is set in the area surrounded by the waterproof step, it will damage the waterproof structure.

[0011] Furthermore, the bottom box is provided with a connecting column for supporting the circuit board, and the connecting column is located in the area surrounded by the waterproof step. The circuit board should be fixed to the upper cover or the bottom box, and the connecting column can play a certain supporting role for the circuit board. After the circuit board is connected to the connecting column by a connector, the circuit board can be effectively prevented from shifting.

[0012] Furthermore, the circuit board is provided with a capacitor, the bottom box is provided with a housing cavity for accommodating the capacitor, and the housing cavity is arranged in parallel with the heat dissipation step. The heat dissipation step and the housing cavity are arranged in parallel to make the layout of components on the circuit board more compact and reasonable.

[0013] Furthermore, a wiring hole is provided at the bottom of the bottom box, and the wiring hole is located in the area surrounded by the accommodating cavity. Since the controller is usually arranged on the motor, the wiring hole is arranged at the bottom of the bottom box to facilitate the output of the controller and effectively shorten the wiring length.

[0014] The beneficial effects of the utility model are as follows: the application is a rationally arranged intelligent permanent magnet variable frequency pump controller, which adopts small and light discrete power devices, and its heat is not easy to accumulate. When it is set, the projection of the discrete power device in the vertical direction only needs to fall on the heat dissipation step, and it does not need to be close to the heat dissipation components. It still has a good heat dissipation effect, thereby ensuring the service life of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the assembly structure;

[0016] Figure 2 It is a structural diagram of the bottom of the controller;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure in the middle AA direction;

[0018] Figure 4 It is a schematic diagram of the upper cover structure;

[0019] Figure 5 Schematic diagram of the bottom box structure;

[0020] Figure 6 It is a schematic diagram of the circuit board structure;

[0021] In the figure: 1-upper cover; 11-extended edge; 12-convex edge; 13-connecting hole; 2-bottom box; 21-heat dissipation step; 22-metal part; 221-fixing part; 222-heat sink; 23-waterproof step; 24-accommodating cavity; 25-assembly hole; 26-connecting column; 27-wiring hole; 3-circuit board; 31-discrete power device; 32-capacitor. DETAILED DESCRIPTION

[0022] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0023] The intelligent permanent magnet variable frequency pump controller of this embodiment has a reasonable layout, such as Figures 1 to 6 As shown, it includes an upper cover 1 and a bottom box 2, wherein the upper cover 1 and the bottom box 2 enclose a receiving space, wherein a circuit board 3 is arranged in the receiving space, and the specific structure of the circuit board 3 is as follows Figure 6 As shown, the bottom box 2 is provided with a heat dissipation step 21 , and the circuit board 3 is provided with a plurality of discrete power devices 31 arranged at intervals, and the vertical projection of each discrete power device 31 falls on the heat dissipation step 21 .

[0024] The discrete power device 31 can also achieve control. Compared with the IPM module, it is small in size and light in weight, and heat is not easy to accumulate. When set, the vertical projection of the discrete power device 31 only needs to fall on the heat dissipation step 21, and it does not need to be close to the heat dissipation components. It still has a good heat dissipation effect and ensures the service life of the controller.

[0025] like Figure 1 and Figure 5As shown, the bottom surface of the bottom box 2 is convex to form the heat dissipation step 21, and a metal piece 22 is provided at the heat dissipation step 21. The metal piece 22 includes a connected fixing portion 221 and a heat sink 222. The fixing portion 221 is fixedly connected to the heat dissipation step 21, and the heat sink 222 extends from the fixing portion 221 to the outside of the bottom box 2. The bottom box 2 is convex to form the heat dissipation step 21 on the inner side of the bottom box 2, and a concave cavity is formed on the outer side of the bottom box 2. The metal piece 22 extends into the concave cavity from bottom to top, and is fixedly connected to the heat dissipation step 21 through a threaded connector. The main body of the bottom box 2 can be made of plastic, and the heat dissipation component is made of a metal piece 22 with good thermal conductivity. This split structure can not only reduce the weight of the bottom box 2, but also ensure the heat dissipation effect, and is also convenient to form.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the upper cover 1 includes an extension edge 11, which extends downward from the edges of the top of the upper cover 1 to cover the upper part of the bottom box 2 to prevent the upper part of the bottom box 2 from being exposed. The extension edge 11 serves as a first waterproof structure, which can cover the matching part of the upper cover 1 and the bottom box 2 without exposing them, and has a good waterproof effect. In this embodiment, the extension edge 11 is narrow at the top and wide at the bottom, which has a good water-conducting effect.

[0027] like Figure 5 As shown, the top of the bottom box 2 is provided with a waterproof step 23 that can be enclosed, and the inner side of the extension edge 11 is provided with a convex edge 12 that matches the waterproof step 23. The waterproof step 23 and the convex edge 12 cooperate to form a waterproof structure, which serves as a second waterproof structure to enhance the waterproof effect of the controller.

[0028] The convex edge 12 is located on the upper portion of the extended edge 11. When the convex edge 12 is located on the upper portion of the extended edge 11, contact with water can be minimized.

[0029] The bottom box 2 is provided with an assembly hole 25, and the assembly hole 25 is located outside the area surrounded by the waterproof step 23. The upper cover 1 is provided with a connection hole 13 adapted to the assembly hole 25. The connection piece passes through the connection hole 13 and is limited in the assembly hole 25 to connect the upper cover 1 and the bottom box 2. When in use, water in the environment may remain at the assembly hole 25 and the connection hole 13. If the connection position is set in the area surrounded by the waterproof step 23, the waterproof structure will be damaged.

[0030] The bottom box 2 is provided with a connecting column 26 for supporting the circuit board 3, and the connecting column 26 is located in the area surrounded by the waterproof step 23. The circuit board 3 should be fixed to the upper cover 1 or the bottom box 2, and the connecting column 26 can play a certain supporting role for the circuit board 3. After the circuit board 3 is connected to the connecting column 26 by a connecting piece, the circuit board 3 can be effectively prevented from shifting.

[0031] The circuit board 3 is provided with a capacitor 32, and the bottom box 2 is provided with a receiving cavity 24 for receiving the capacitor 32, and the receiving cavity 24 is arranged in parallel with the heat dissipation step 21. The heat dissipation step 21 and the receiving cavity 24 are arranged in parallel to make the layout of components on the circuit board 3 more compact and reasonable.

[0032] The bottom of the bottom box 2 is provided with a wiring hole 27, which can be a square hole or a circular hole, and is located in the area surrounded by the accommodating cavity 24. Since the controller is usually arranged on the motor, the wiring hole 27 is arranged at the bottom of the bottom box 2 to facilitate the wiring of the controller and effectively shorten the wiring length.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A controller for an intelligent permanent magnet variable frequency pump with a reasonable layout, comprising an upper cover and a bottom box, wherein the upper cover and the bottom box enclose a receiving space, wherein a circuit board is arranged in the receiving space, characterized in that: The bottom box is provided with a heat dissipation step, and the circuit board is provided with a plurality of discrete power devices arranged at intervals, and a vertical projection of each discrete power device falls on the heat dissipation step.

2. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 1 is characterized in that: The heat dissipation step is convexly formed on the bottom surface of the bottom box, and a metal piece is provided at the heat dissipation step. The metal piece includes a connected fixing portion and a heat sink. The fixing portion is fixedly connected to the heat dissipation step, and the heat sink extends from the fixing portion to the outside of the bottom box.

3. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 1 is characterized in that: The upper cover comprises an extended edge, and the extended edge covers the upper part of the bottom box.

4. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 3 is characterized in that: The top of the bottom box is provided with a waterproof step that can be enclosed, and the inner side of the extended edge is provided with a convex edge that is adapted to the waterproof step.

5. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 4 is characterized in that: The convex edge is located on the upper portion of the extended edge.

6. The rationally arranged intelligent permanent magnet variable frequency pump controller according to claim 4 is characterized in that: The bottom box is provided with an assembly hole, which is located outside the area surrounded by the waterproof step. The upper cover is provided with a connecting hole adapted to the assembly hole. A connecting piece passes through the connecting hole and is limited in the assembly hole to connect the upper cover and the bottom box.

7. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 4 is characterized in that: The bottom box is provided with connecting posts for supporting the circuit board, and the connecting posts are located in the area surrounded by the waterproof steps.

8. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 1 is characterized in that: The circuit board is provided with a capacitor, the bottom box is provided with a receiving cavity for receiving the capacitor, and the receiving cavity is arranged in parallel with the heat dissipation step.

9. The intelligent permanent magnet variable frequency pump controller with reasonable layout according to claim 8 is characterized in that: A wiring hole is provided at the bottom of the bottom box, and the wiring hole is located in the area surrounded by the accommodating cavity.

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