A solar land pump with a built-in controller

Abstract

The utility model discloses a solar energy land pump with built-in controller belongs to solar energy water pump technical field, and the scheme is in the use process, relative to prior art, and because the controller is built-in back end cover cavity, has saved independent shell and radiator, has reduced cost and has reduced the volume greatly, and epoxy resin full -sized circuit board, can physically isolate water / dust / vibration, and the protection level reaches IP68, and the service life improves greatly, and simultaneously fan shares motor pivot, and the additional energy consumption drive heat dissipation airflow has reduced the controller temperature rise under full load greatly.

Description

Technical Field

[0001] This utility model relates to the field of solar water pump technology, and in particular to a solar land pump structure with an integrated controller. Background Technology

[0002] Currently, solar-powered land-based pumps are mostly used in remote outdoor settings. Existing products typically feature a separate design for the pump body and controller: the controller requires a separate metal or plastic heat dissipation housing, potentially leading to a loose overall structure and increased costs. Furthermore, this separate design results in insufficient heat dissipation efficiency for the controller housing, making it difficult to achieve an IP68 waterproof and dustproof rating. Long-term operation can easily lead to malfunctions due to poor heat dissipation, environmental corrosion, or vibration. Simultaneously, vibration transmitted to the independent controller reduces circuit stability. Current technology lacks a solution that integrates the controller and pump motor while simultaneously achieving efficient heat dissipation and IP68 protection. Therefore, a highly integrated solar pump structure with strong environmental adaptability is urgently needed. Utility Model Content

[0003] 1. Technical problem to be solved: To address the problems of high cost, low protection level, poor heat dissipation efficiency and insufficient shock resistance caused by split controllers, this utility model provides a solar land pump with a compact structure and optimized heat dissipation and protection performance.

[0004] 2. Technical Solution: To solve the above problems, the present invention adopts the following technical solution.

[0005] A solar-powered land-based pump with a built-in controller includes a pump frame, a pump head, and a motor connected in sequence. A rear end cover is fixedly connected to the tail of the motor, and the rear end cover and the motor housing together form a closed cavity. The controller is installed inside the enclosed cavity, and the surface of the controller's circuit board and electronic components are completely covered with an epoxy resin layer. The motor's shaft extends into the rear end cover, and a fan is fixedly mounted at the shaft end. The outer side of the rear end cover is covered with a fan shroud with heat dissipation mesh.

[0006] A further improvement is that the epoxy resin layer completely fills the gap between the controller's circuit board and the inner wall of the rear cover, forming a gapless seal.

[0007] A further improvement is that the fan is a centrifugal fan, with its blades mounted parallel to the bottom surface of the rear end cover.

[0008] A further improvement is that the thickness of the epoxy resin layer is not less than 2 mm.

[0009] A further improvement is that the diameter of the mesh openings in the fan cover is no greater than 1 mm.

[0010] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: (1) Structural integration: The controller has a built-in motor rear end cover cavity, eliminating the need for a separate outer shell and reducing material and assembly costs; (2) Multiple protection reinforcement: The epoxy resin layer with a thickness of ≥2mm completely fills the gap between the controller and the cavity, blocking the intrusion of water vapor and dust and absorbing mechanical vibration; (3) Active heat dissipation optimization: The fan rotates synchronously with the motor shaft, and the forced airflow flows through the outer surface of the rear cover to form a directional heat dissipation path. Combined with the heat conduction effect of epoxy resin, it significantly reduces the temperature rise of the controller.

[0011] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure from one side of the present invention; Figure 3 This is a schematic diagram of the exploded structure from the other side of this utility model.

[0013] Explanation of the labels in the diagram: 1. Pump frame; 2. Pump head; 3. Motor; 4. Controller; 5. Rear end cover; 6. Fan; 7. Fan cover. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] I. Component Installation Steps 1. Core component assembly: The stator housing of motor 3 is bolted to the end face of pump head 2, the motor shaft passes through pump head 2 to drive the impeller, and the outlet of pump head 2 faces the working direction.

[0019] 2. Controller integration (combined with) Figure 2 ): The controller 4 circuit board is fixed in the positioning groove inside the rear cover 5. Liquid epoxy resin is injected into the front and back sides of the circuit board and the surrounding gaps to completely cover the circuit, component leads and solder joints. After curing, it forms a gapless seal with a thickness of ≥2mm.

[0020] 3. Connection between the rear end cover and the motor: The rear cover 5 is connected to the tail of motor 3, and is pressed together by a waterproof sealing ring and bolts to form a closed cavity.

[0021] 4. Fan assembly installation (in conjunction with...) Figure 3 ): The centrifugal fan 6 is interference-fitted to the end of the motor shaft, and its blade plane is installed perpendicular to the shaft to maximize airflow guidance efficiency; The fan cover 7 is installed on the outside of the rear cover 5 by a snap fastener, and the mesh diameter is ≤1mm.

[0022] II. Operation Process and Results 1. Start-up phase: After solar power is supplied, the controller 4 drives the motor 3 to start, and the rotating shaft drives the pump head impeller and fan 6 to rotate synchronously.

[0023] 2. Targeted heat dissipation: Heat conduction coordination: The heat generated by the controller 4 during operation is conducted to the metal shell (such as aluminum alloy) of the rear cover 5 through the epoxy resin layer, and then the heat adsorbed by the controller 4 and the rear cover 5 is dissipated to the outside by the fan cover 7 through the forced airflow of the fan 6.

[0024] 3. Protection Mechanism: Waterproof and dustproof: The epoxy resin layer isolates water vapor penetration (IP68 level), significantly improving the protection level, and the sealed cavity prevents dust from entering; Shock absorption: Epoxy resin absorbs the vibration energy of the motor, reducing the risk of circuit board components desoldering.

[0025] 4. Verification of technical effectiveness According to actual measurements (ambient temperature 25℃±2℃, rated load 1000W), after running at full load for 4 hours, the controller temperature decreased by 22℃ compared to the split design.

[0026] In use, this solution, compared with the existing technology, eliminates the need for a separate outer shell and heat sink because the controller 4 has a built-in rear cover 5 cavity, which greatly reduces the cost and size; in addition, the epoxy resin fully encapsulates the circuit board, which can physically isolate water / dust / vibration, with an IP68 protection level and greatly improves the service life; at the same time, the fan 6 shares the motor shaft, and the additional energy consumption drives the cooling airflow, which greatly reduces the temperature rise of the controller under full load.

[0027] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A solar-powered land-based pump with a built-in controller, comprising a pump frame (1), a pump head (2), and a motor (3) connected in sequence, characterized in that: The rear end cover (5) is fixedly connected to the tail of the motor (3), and the rear end cover (5) and the motor (3) housing together form a closed cavity; The closed cavity is equipped with a controller (4), and the circuit board surface and electronic components of the controller (4) are completely covered with an epoxy resin layer. The tail end of the motor (3) extends into the rear end cover (5), and the fan (6) is fixedly installed at the tail end of the shaft. The outer side of the rear end cover (5) is covered with a fan cover (7) with heat dissipation mesh.

2. A solar-powered land-based pump with a built-in controller according to claim 1, characterized in that: The epoxy resin layer completely fills the gap between the circuit board of the controller (4) and the inner wall of the rear cover (5), forming a gapless seal.

3. A solar-powered land-based pump with a built-in controller according to claim 1, characterized in that: The fan (6) is a centrifugal fan, and its blade plane is installed parallel to the bottom surface of the rear cover (5).

4. A solar-powered land-based pump with a built-in controller according to claim 2, characterized in that: The thickness of the epoxy resin layer is not less than 2 mm.

5. A solar-powered land-based pump with a built-in controller according to claim 1, characterized in that: The mesh diameter of the fan cover (7) is no greater than 1 mm.

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