Structure for enhancing heat dissipation of water pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a structure for enhancing heat dissipation of a water pump. Comprising a shaft, a casing assembly, a stator assembly, a turbine and a rotor assembly, the shaft is located in the casing assembly, a heat dissipation structure is arranged in the shaft, the turbine is located on the right side of the casing assembly, the stator assembly is located in the casing assembly, the rotor assembly is installed in the turbine, and the rotor assembly is connected with the shaft.

Description

Technical Field

[0001] This utility model relates to the technical field of water pumps, and in particular to a structure for enhancing the heat dissipation of water pumps. Background Technology

[0002] With increasingly stringent requirements for energy conservation and environmental protection, pumps, as key power sources, must also meet standards of high efficiency and low energy consumption. A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. For example, a water pump disclosed in prior art publication number CN204646703U includes a housing and a rotating shaft axially disposed within the housing. An upper impeller and a lower impeller are fixedly connected to the upper and lower ends of the rotating shaft, respectively. A motor is also fixedly connected to the middle of the housing. The rotating shaft passes through the main shaft of the motor, and the upper and lower impellers are located on the upper and lower sides of the motor, respectively. The housing has an inlet end and an outlet end, with the lower impeller located at the inlet end and the upper impeller located at the outlet end. However, as the power of water pumps increases, the pump's size generally needs to be increased. With the same volume, increasing the power will increase the pump's heat generation. When the temperature exceeds the material's safe temperature, the material's lifespan will be drastically reduced. Therefore, in order to reduce costs and increase efficiency, to increase the power without changing the size, it is necessary to enhance the water pump's heat dissipation capacity on the existing basis. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an enhanced water pump heat dissipation structure to improve heat dissipation capacity.

[0004] This utility model discloses an enhanced water pump heat dissipation structure, comprising a shaft, a housing assembly, a stator assembly, a turbine, and a rotor assembly. The shaft is located inside the housing assembly and has a heat dissipation structure inside. The turbine is located on the right side of the housing assembly, and the stator assembly is located inside the housing assembly. The rotor assembly is installed inside the turbine and is connected to the shaft. Typically, the heat source of a water pump is the stator winding of a brushless motor integrated inside the pump. Heat dissipation is achieved through the coolant in the gap between the rotor and stator. The heat dissipation structure allows the coolant to enter from the inlet, achieving strong circulation and enhancing heat dissipation capacity.

[0005] Preferably, the heat dissipation structure of the shaft is provided with an axial central hole and six radial holes at the shaft step. Since the pressure is low at the right inlet of the axial hole and high at the shaft step, the fluid will flow from the high pressure area to the low pressure area to achieve the purpose of fluid circulation and heat dissipation, thereby improving the heat dissipation capacity of the water pump.

[0006] Preferably, the housing assembly integrates the stator assembly into one piece during injection molding; during assembly, the shaft is pressed into the stator assembly, which facilitates assembly.

[0007] Preferably, the housing assembly and the turbine are assembled together by bolts; after the shaft is pressed into the stator assembly, the rotor assembly is placed into the housing assembly, and then the housing assembly and the turbine are assembled and connected by bolts, which is convenient for installation.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: Under normal circumstances, the heat source of the water pump is the stator winding of the brushless motor integrated inside the water pump. The heat dissipation is achieved by the coolant in the gap between the rotor and the stator. The heat dissipation structure allows the coolant to enter from the inlet to achieve strong circulation and enhance the heat dissipation capacity. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the appearance structure of this utility model;

[0010] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0011] Figure 3 This is a schematic diagram of the radial cross-sectional structure of this utility model;

[0012] Figure 4 This is a schematic diagram of the structure of the shaft of this utility model;

[0013] Figure 5 This is a cross-sectional structural diagram of the shaft of this utility model;

[0014] The attached diagram is labeled as follows: 1. Shaft; 2. Housing assembly; 3. Stator assembly; 4. Turbine; 5. Rotor assembly. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0016] like Figures 1 to 5 As shown, shaft 1 is located inside housing assembly 2, turbine 4 is located on the right side of housing assembly 2, stator assembly 3 is located inside housing assembly 2, rotor assembly 5 is installed inside turbine 4, rotor assembly 5 is connected to shaft 1, shaft 1 has an axial center hole, and six radial holes are opened at the step of shaft 1. During injection molding, the stator assembly 3 is injection molded into one piece in housing assembly 2, and housing assembly 2 and turbine 4 are assembled together by bolts.

[0017] During assembly, shaft 1 is pressed into stator assembly 3, which is convenient for assembly. After shaft 1 is pressed into stator assembly 3, rotor assembly 5 is placed into housing assembly 2. Housing assembly 2 and turbine 4 are then connected by bolts, which is convenient for installation. Since the pressure is low at the right inlet of the axial hole of shaft 1 and high at the step position of shaft 1, the fluid will flow from the high pressure area to the low pressure area to achieve the purpose of fluid circulation and heat dissipation, thereby improving the heat dissipation capacity of the water pump.

[0018] like Figures 1 to 5 As shown, this utility model provides an enhanced water pump heat dissipation structure. During operation, when the fluid circulates, it flows from the high-pressure area into the low-pressure area, enters through the axial central hole inlet, and then flows out through the radial hole at the step of shaft 1, thus achieving the purpose of fluid circulation and heat dissipation.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A structure for enhancing the heat dissipation of a water pump, characterized in that, The assembly includes a shaft (1), a housing assembly (2), a stator assembly (3), a turbine (4), and a rotor assembly (5). The shaft (1) is located inside the housing assembly (2), and a heat dissipation structure is provided inside the shaft (1). The turbine (4) is located on the right side of the housing assembly (2), and the stator assembly (3) is located inside the housing assembly (2). The rotor assembly (5) is installed inside the turbine (4), and the rotor assembly (5) is connected to the shaft (1). The heat dissipation structure of the shaft (1) is that an axial center hole is provided inside the shaft (1), and six radial holes are provided at the step of the shaft (1). The stator assembly (3) is injection molded into the housing assembly (2) as a whole. The housing assembly (2) and the turbine (4) are assembled together by bolts.

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