Pump machine with cooling device for cooling motor control circuit board

Abstract

The utility model relates to the field of pipeline pumps, and discloses a pump machine with a cooling device for cooling a motor control circuit board, which is characterized in that a water pumping assembly is fixedly connected in a pump machine shell, one end of the pump machine shell is fixedly connected with a water outlet pipe, and the other end of the pump machine shell is provided with a water inlet; an impeller bin is formed in the inner side of the water inlet, a water storage cavity is formed in the inner side of the impeller bin, a mounting plate is fixedly connected to the periphery of the water outlet pipe, a rear end cover is detachably connected to the left side of the mounting plate, a heat conduction plate is fixedly connected to the periphery of the water outlet pipe, and a PCB abuts against the outer side of the heat conduction plate; an access hole is formed in the position, corresponding to the PCB, of the outer side of the rear end cover. According to the pipeline pump, the water outlet pipe and the heat conducting plate are arranged, when the pipeline pump works to pump water, water flow quickly flows through the water outlet pipe, meanwhile, heat generated when the PCB works is taken away, and therefore long-time continuous work of the pipeline pump is guaranteed, the structure is simple, and the use cost is low.

Description

Technical Field

[0001] The utility model relates to the field of pipeline pumps, in particular to a pump machine with a cooling device for cooling a motor control circuit board. Background Art

[0002] The pipeline pump is a type of single-suction single-stage or multi-stage centrifugal pump. Because its inlet and outlet are in the same straight line and the inlet and outlet caliber are the same, it resembles a section of pipeline and can be installed at any position of the pipeline, so it is named as a pipeline pump. The structural feature is that the inlet and outlet are the same and in the same straight line. The circuit board in the motor body of the pipeline pump is generally sealed and set in the stator seat or as an external component independent of the pipeline pump. The circuit board is set in the stator seat and generally adopts glue filling insulation sealing. This sealing method is not conducive to the heat dissipation of the circuit board and is prone to local high temperature. In actual use, the circuit board will generate heat accumulation, and long-term use may cause the circuit board to burn.

[0003] After searching, Chinese patent announcement number: CN213185731U discloses a motor heat dissipation device and a pipeline pump, including a motor body, the body of the motor body is provided with a water hole, and also includes a rear end cover with a water outlet hole, a water outlet pipe and a circuit board for controlling the operation of the motor body; the circuit board is arranged in the rear end cover; the water hole and the water outlet hole are connected through the water outlet pipe.

[0004] Although this technology uses water holes and water outlet pipes to dissipate heat from the circuit board, in actual use, the circuit board is placed inside the rear end cover and is not in direct contact with the water outlet pipe. When the pipeline pump is working, the heat of the circuit board is dissipated into the cavity inside the pipeline pump. Water flows inside the water outlet pipe, taking away the heat of the air inside the rear end cover, reducing the air temperature inside the rear end cover, thereby cooling the circuit board. In essence, it is air cooling, and the cooling efficiency is low. Therefore, a pump machine with a cooling device for cooling the motor control circuit board is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a pump machine with a cooling device for cooling the motor control circuit board, aiming to improve the problems in the prior art that the circuit board will generate heat accumulation, the heat of the circuit board is then conducted to the water flow through the air, and the heat dissipation efficiency is low.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a pump casing, a water pumping assembly is fixedly connected to the inside of the pump casing, a water outlet pipe is fixedly connected to one end of the pump casing, a water inlet is opened at the other end of the pump casing, a mounting plate is fixedly connected to the outer periphery of the water outlet pipe, a rear end cover is detachably connected to the left side of the mounting plate, a heat conduction plate is fixedly connected to the outer periphery of the water outlet pipe, a PCB board is abutted against the outer side of the heat conduction plate, and an inspection port is opened on the outer side of the rear end cover corresponding to the PCB board.

[0007] As a further description of the above technical solution:

[0008] The pumping assembly includes a rotating motor, the outer periphery of which is fixedly connected to the inside of a pump housing, and the right output shaft of the rotating motor is fixedly connected to a multi-stage impeller.

[0009] As a further description of the above technical solution:

[0010] An impeller compartment is provided inside the water inlet, and a water storage cavity is provided inside the impeller compartment.

[0011] As a further description of the above technical solution:

[0012] The interior of the impeller bin is arranged at the periphery of the multi-stage impeller, the water storage chamber is arranged at the periphery of the rotating motor and a shell block is arranged in the middle, and the inner side of the water outlet pipe is connected with the outer side of the water storage chamber.

[0013] As a further description of the above technical solution:

[0014] The inner side of the rear end cover is fixedly connected to the side of the pump housing close to the water outlet pipe.

[0015] As a further description of the above technical solution:

[0016] The inner side of the PCB board is detachably connected to the outer side of the heat conducting plate.

[0017] As a further description of the above technical solution:

[0018] The PCB board is electrically connected to the rotating motor.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, by arranging a water outlet pipe and a heat conducting plate, when the pipeline pump is working to pump water, water flows quickly through the water outlet pipe, and at the same time takes away the heat generated by the PCB board when it is working, thereby ensuring that the pipeline pump can work continuously for a long time, with a simple structure and low use cost.

[0021] 2. In the utility model, by providing an inspection port, the corresponding PCB board can be conveniently disassembled according to the cause of the fault. When the control system fails, it can be quickly repaired and replaced, which improves the inspection efficiency and ensures the working efficiency of the pipeline pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front perspective schematic diagram of the whole pump machine provided by the utility model and having a cooling device for cooling a motor control circuit board;

[0023] Figure 2 This is a schematic diagram of the overall front plan of a pump machine with a cooling device for cooling a motor control circuit board proposed by the utility model;

[0024] Figure 3 A top three-dimensional schematic diagram of a heat conducting plate of a pump machine provided with a cooling device for cooling a motor control circuit board proposed by the utility model;

[0025] Figure 4 The utility model is a three-dimensional schematic diagram of the top surface of a water outlet pipe of a pump machine with a cooling device for cooling a motor control circuit board.

[0026] Legend:

[0027] 1. Pump housing; 2. Rotating motor; 3. Impeller compartment; 4. Multi-stage impeller; 5. Water inlet; 6. Water storage chamber; 7. Water outlet pipe; 8. Mounting plate; 9. Rear end cover; 10. Inspection port; 11. Heat conduction plate; 12. PCB board. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 2The utility model provides an embodiment: a pump machine with a cooling device for cooling a motor control circuit board, comprising a pump machine housing 1 for carrying and supporting equipment, a pumping assembly fixedly connected inside the pump machine housing 1, the pumping assembly comprising a rotating motor 2 for providing power, the outer periphery of the rotating motor 2 is fixedly connected to the inside of the pump machine housing 1, the right output shaft of the rotating motor 2 is fixedly connected to a multi-stage impeller 4, the rotating motor 2 is turned on, the right output shaft of the rotating motor 2 will drive the multi-stage impeller 4 to rotate, one end of the pump machine housing 1 is fixedly connected to a pump for discharging water An outlet pipe 7 is provided at the other end of the pump housing 1, and a water inlet 5 is provided at the inner side of the water inlet 5. An impeller chamber 3 is provided inside the impeller chamber 3, and the inner side of the impeller chamber 3 is arranged at the outer periphery of the multi-stage impeller 4. The multi-stage impeller 4 rotates inside the impeller chamber 3 to accelerate the water and move it to the left. A water storage chamber 6 is provided inside the impeller chamber 3, and the water will accelerate from the inside of the impeller chamber 3 to the water storage chamber 6. The water storage chamber 6 is arranged at the outer periphery of the rotating motor 2 and a shell is provided in the middle to prevent the water in the water storage chamber 6 from contacting the rotating motor 2. The inner side of the outlet pipe 7 is communicated with the outer side of the water storage chamber 6.

[0030] Reference Figure 2-Figure 4 A mounting plate 8 is fixedly connected to the outer periphery of the water outlet pipe 7. Two groups of mounting plates 8 are provided, which are symmetrically arranged on the front and rear sides of the water outlet pipe 7. A rear end cover 9 is detachably connected to the left side of the mounting plate 8. The inner side of the rear end cover 9 is fixedly connected to the side of the pump housing 1 close to the water outlet pipe 7. A heat conducting plate 11 is fixedly connected to the top of the water outlet pipe 7. The heat conducting plate 11 has a strong thermal conductivity and can quickly conduct heat away. A PCB board 12 is abutted on the outer side of the heat conducting plate 11. The electronic components on the PCB board 12 face downward and contact with the heat conducting plate 11, which is convenient for rapid heat dissipation. The inner side of the PCB board 12 is detachably connected to the outer side of the heat conducting plate 11, which is convenient for disassembling a faulty PCB. The PCB board 12 is electrically connected to the rotating motor 2, and the rotating motor 2 can be controlled by the PCB board 12, so as to control the flow rate and flow velocity of the pipeline pump. The PCB board 12 is divided into an IPM module PCB and a rectifier bridge PCB. The IPM module PCB can collect the operation status and energy consumption data of the equipment in real time to generate heat. The rectifier bridge PCB can convert AC power into DC power. The two PCBs are respectively connected to the water outlet pipe 7 using a set of heat conducting plates 11 to directly transfer the heat of the PCB board 12 to the water outlet pipe 7. An inspection port 10 is provided on the outer side of the rear end cover 9 corresponding to the PCB board 12 to facilitate disassembly.

[0031] Working principle: When the pipeline pump is working, the PCB board 12 sends a signal to the rotating motor 2 to make the rotating motor 2 rotate. The IPM module PCB is responsible for real-time collection of the operating status and energy consumption data of the equipment to generate heat and transmit signals. The rectifier bridge PCB converts AC into DC and continuously supplies power to the rotating motor 2 to generate heat. The output shaft on the right side of the rotating motor 2 drives the multi-stage impeller 4 to rotate. The multi-stage impeller 4 generates suction, driving water to enter from the water inlet 5, and accelerate through the impeller chamber 3, and finally flow out from the water outlet pipe 7 through the water storage chamber 6. At this time, the heat generated by the PCB board 12 is transferred to the pipe wall through the heat conduction plate 11, so that the temperature of the water outlet pipe 7 increases, and the fast-flowing water can quickly take away the heat in the water outlet pipe 7, thereby cooling the PCB board 12, so that the PCB board 12 can work continuously for a long time. At the same time, the PCB board 12 can be inspected through the inspection port 10, and the damaged PCB board 12 can be replaced by removing the bolts, which improves the inspection efficiency.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pump having a cooling device for cooling a motor control circuit board, comprising a pump housing (1), characterized in that: A water pumping assembly is fixedly connected inside the pump housing (1); a water outlet pipe (7) is fixedly connected to one end of the pump housing (1); a water inlet (5) is provided at the other end of the pump housing (1); a mounting plate (8) is fixedly connected to the outer periphery of the water outlet pipe (7); a rear end cover (9) is detachably connected to the left side of the mounting plate (8); a heat conducting plate (11) is fixedly connected to the outer periphery of the water outlet pipe (7); a PCB board (12) is abutted against the outer side of the heat conducting plate (11); and an inspection opening (10) is provided on the outer side of the rear end cover (9) at a position corresponding to the PCB board (12).

2. A pump machine having a cooling device for cooling a motor control circuit board according to claim 1, characterized in that: The water pumping assembly comprises a rotating motor (2), the outer periphery of the rotating motor (2) being fixedly connected to the interior of a pump casing (1), and the right output shaft of the rotating motor (2) being fixedly connected to a multi-stage impeller (4).

3. A pump machine having a cooling device for cooling a motor control circuit board according to claim 1, characterized in that: An impeller chamber (3) is provided inside the water inlet (5), and a water storage chamber (6) is provided inside the impeller chamber (3).

4. A pump machine having a cooling device for cooling a motor control circuit board according to claim 3, characterized in that: The impeller chamber (3) is arranged inside the outer periphery of the multi-stage impeller (4), the water storage chamber (6) is arranged outside the rotating motor (2) and a shell is provided in the middle to block it, and the inner side of the water outlet pipe (7) is connected to the outer side of the water storage chamber (6).

5. A pump machine having a cooling device for cooling a motor control circuit board according to claim 1, characterized in that: The inner side of the rear end cover (9) is fixedly connected to a side of the pump housing (1) close to the water outlet pipe (7).

6. A pump machine having a cooling device for cooling a motor control circuit board according to claim 1, characterized in that: The inner side of the PCB board (12) is detachably connected to the outer side of the heat conducting plate (11).

7. A pump machine having a cooling device for cooling a motor control circuit board according to claim 1, characterized in that: The PCB board (12) and the rotating motor (2) are electrically connected.

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