Integrated motor and pump module for improved dish-washing machine

Abstract

The utility model relates to the related technical field of water pump modules, and discloses an improved integrated motor and pump module for a dishwasher, which is characterized in that a lower shell is arranged above a mounting rack, an upper shell is fixedly arranged above the lower shell, the opening end of the upper shell is fixedly connected with an upper end cover, and the lower end of the upper shell is fixedly connected with a lower end cover. A water inlet cavity is formed between the upper shell and the upper end cover, the upper shell and the lower shell are connected to form a mounting cavity, and a rotor assembly used for rotating is rotationally mounted in the mounting cavity; according to the integrated motor and pump module for the improved dish-washing machine, the plastic is filled between the coil and the shell, and the stator coil can be firmly fixed in the stator groove by the plastic, so that the coil is prevented from displacing, loosening or deforming due to factors such as vibration, centrifugal force and the like in the operation process of the motor, and the service life of the motor is prolonged. And the air gap uniformity and the magnetic field stability of the motor are ensured, so that the performance and the efficiency of the motor are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of water pump modules, and more specifically, it relates to an improved integrated motor and pump module for dishwashers. Background Technology

[0002] With the development of motor technology, high-efficiency and energy-saving motors have been applied to dishwasher water pumps. For example, using a permanent magnet synchronous motor can improve the efficiency of the water pump and reduce energy consumption. At the same time, the design of the impeller has also been improved. By optimizing factors such as the shape, number of blades, and angle of the impeller, the pressure and flow rate of the water flow have been increased. Modern dishwasher water pumps can generate a stronger water flow, allowing the spray arms to rotate faster and the spray angle to be more optimized, thus greatly improving the cleaning effect. However, the insulation performance of the internal insulation materials of existing dishwasher water pumps is severely affected by high temperatures. When the temperature is too high, the insulation material ages faster, and the insulation resistance decreases. As the insulation performance deteriorates, the risk of short circuits between motor windings or between the windings and the iron core increases. Such short circuits may cause excessive motor current, further aggravating heat generation, and may even burn out the motor.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an improved integrated motor and pump module for dishwashers. Utility Model Content

[0004] This invention provides an improved integrated motor and pump module for dishwashers, which overcomes the aforementioned defects in the prior art.

[0005] The purpose and effect of this utility model, an improved integrated motor and pump module for a dishwasher, are achieved by the following specific technical means:

[0006] An improved integrated motor and pump module for a dishwasher includes: a mounting bracket, a lower housing mounted on the mounting bracket, an upper housing fixedly mounted on the lower housing, an upper end cover fixedly connected to the open end of the upper housing, a water inlet cavity formed between the upper housing and the upper end cover, an installation cavity formed by connecting the upper housing and the lower housing, and a rotor assembly for rotation rotatably mounted inside the installation cavity;

[0007] The rotor assembly includes a central shaft, with rotating bearings fixedly installed at both ends of the central shaft. A rubber sealing ring is fixedly installed above the rotating bearings located at the upper end of the central shaft, and a cast aluminum ring for enhancing heat dissipation is installed between the two rotating bearings.

[0008] In a further technical solution, heat dissipation components are symmetrically installed at the upper and lower ends of the cast aluminum ring. The heat dissipation components include annular plates, and disturbance blades are fixedly connected above the annular plates. The annular plates and the disturbance blades are arranged alternately.

[0009] In a further technical solution, a ventilation groove is provided on the side of the upper housing near the lower housing, and the ventilation groove communicates with the interior of the mounting cavity.

[0010] In a further technical solution, an annular groove is provided on the inner side of the cast aluminum ring, and the annular groove is fixedly connected to the central rotating shaft.

[0011] In a further technical solution, the lower housing has a cavity inside, a coil is installed inside the cavity, a wire clamp 32 is held on the outside of the coil 21, and the coil and the cavity inside the lower housing are filled with plastic, which is made of BMC or thermoplastic material.

[0012] In a further technical solution, the upper end of the central rotating shaft passes through the upper housing, and an impeller is fixedly connected to the end of the central rotating shaft, the impeller being disposed inside the water inlet chamber.

[0013] A further technical solution is to have an array of drainage pipes and four exhaust holes on the outer side of the upper housing, the exhaust holes being connected to the interior of the ventilation slot.

[0014] A further technical solution is that a heating module is fixedly installed on the upper end cover, the heating tube of the heating module extends into the water inlet cavity, and a water inlet pipe for water inlet is fixedly connected above the upper end cover.

[0015] In a further technical solution, the outer end of the disruptive blade is provided with serrated patterns, and a capacitor is fixedly installed on the outer side of the mounting bracket.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model discloses an improved integrated motor and pump module for dishwashers. Plastic is filled between the coil and the housing. The plastic securely fixes the stator coil within the stator slot, preventing displacement, loosening, or deformation of the coil due to vibration, centrifugal force, or other factors during motor operation. This ensures uniform air gap and magnetic field stability, thereby improving motor performance and efficiency. Furthermore, it integrates the stator into a single unit, enhancing its structural strength and rigidity, reducing the risk of component damage due to mechanical stress, and improving the motor's reliability and lifespan. This fixing effect is particularly important under the vibration and impact conditions of water pump operation.

[0018] This utility model discloses an improved integrated motor and pump module for a dishwasher. An exhaust port is provided on the upper housing to expel hot air, reducing the internal temperature of the equipment and minimizing thermal stress and fatigue damage to components caused by high temperatures, thus slowing down the aging process. Rubber seals are prone to aging, hardening, and cracking at high temperatures, leading to decreased sealing performance. Suitable temperatures can extend their service life and ensure the equipment's sealing. Metal components are also prone to oxidation and corrosion at high temperatures; low temperatures can reduce the rate of these chemical reactions, minimizing corrosion and damage to components. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0021] Figure 3 This is a top view of the structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the overall side section structure of this utility model.

[0023] Figure 5 This is a bottom view of the upper shell 11 in this utility model.

[0024] Figure 6 This is a schematic diagram of the overall front view of the rotor assembly 22 in this utility model.

[0025] Figure 7 This is a schematic diagram of the overall structure of the cast aluminum ring 29 in this utility model.

[0026] Figure 8 This is a top view schematic diagram of the overall structure of the cast aluminum ring 29 in this utility model.

[0027] Figure 9 This is a utility model Figure 7 A magnified structural diagram at point A in the diagram.

[0028] Figure 10 This is a schematic diagram of the structure of the coil 21 and the wire clamp 32 in this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] Upper housing 11, lower housing 12, mounting bracket 13, drain pipe 14, upper end cover 15, heating module 16, water inlet pipe 17, capacitor 18, water inlet chamber 19, ventilation slot 20, coil 21, rotor assembly 22, exhaust port 23, mounting cavity 24, impeller 25, central shaft 26, rotating bearing 27, rubber sealing ring 28, cast aluminum ring 29, annular plate 30, turbulent blade 31, wire clamp 32, annular groove 34. Detailed Implementation

[0031] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0032] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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 do not 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Example:

[0035] As attached Figure 1 To be continued Figure 9 As shown:

[0036] This utility model provides an improved integrated motor and pump module for dishwashers.

[0037] See attached document Figure 1 To be continued Figure 9The device includes: a mounting frame 13, a lower housing 12 mounted on the mounting frame 13, an upper housing 11 fixedly mounted on the lower housing 12, an upper end cover 15 fixedly connected to the open end of the upper housing 11, a water inlet cavity 19 formed between the upper housing 11 and the upper end cover 15, and a mounting cavity 24 formed by connecting the upper housing 11 and the lower housing 12. A rotor assembly 22 for rotation is rotatably mounted inside the mounting cavity 24.

[0038] The rotor assembly 22 includes a central shaft 26, with rotating bearings 27 fixedly installed at both ends of the central shaft 26. A rubber sealing ring 28 is fixedly installed above the rotating bearings 27 located at the upper end of the central shaft 26. A cast aluminum ring 29 for enhancing heat dissipation is installed between the two rotating bearings 27.

[0039] Preferred options are shown in the appendix. Figure 7 The cast aluminum ring 29 is symmetrically equipped with heat dissipation components at its upper and lower ends. The heat dissipation components include annular plates 30, and a disturbance blade 31 is fixedly connected above the annular plates 30. The annular plates 30 and the disturbance blades 31 are arranged alternately.

[0040] Preferred options are shown in the appendix. Figure 5 The upper housing 11 is provided with a ventilation groove 20 on the side near the lower housing 12, and the ventilation groove 20 is in communication with the interior of the mounting cavity 24.

[0041] Preferred options are shown in the appendix. Figure 7 The inner side of the cast aluminum ring 29 is provided with an annular groove 34, and the annular groove 34 is fixedly connected to the central rotating shaft 26.

[0042] Preferred options are shown in the appendix. Figure 6 The lower housing 12 has a cavity inside, and a coil 21 is installed inside the cavity. A wire clamp 32 is held on the outside of the coil 21. The coil 21 and the cavity inside the lower housing 12 are filled with plastic, which is made of BMC or thermoplastic material.

[0043] Preferred options are shown in the appendix. Figure 6 The upper end of the central rotating shaft 26 passes through the upper housing 11, and an impeller 25 is fixedly connected to the end of the central rotating shaft 26. The impeller 25 is disposed inside the water inlet chamber 19.

[0044] Preferred options are shown in the appendix. Figure 5 The upper housing 11 has an array of drainage pipes 14 and four exhaust holes 23 on its outer side, and the exhaust holes 23 are connected to the interior of the ventilation slot 20.

[0045] Preferred options are shown in the appendix. Figure 2A heating module 16 is fixedly installed on the upper end cover 15. The heating tube portion of the heating module 16 extends into the water inlet cavity 19. A water inlet pipe 17 for water inlet is fixedly connected above the upper end cover 15.

[0046] Preferred options are shown in the appendix. Figure 2 and appendix Figure 9 The outer end of the disturbance blade 31 is provided with serrated patterns, and a capacitor 18 is fixedly installed on the outer side of the mounting bracket 13.

[0047] Specific usage method of this utility model:

[0048] When using this invention, first install the device at the bottom of the dishwasher, then connect the dishwasher's water inlet pipe and drain pipe to the water inlet connector 17 and drain connector 14 respectively. After the connection is complete, connect the power supply, and then the invention can be used.

[0049] When the device is running, water first enters through the inlet pipe 17 and then enters the inlet chamber 19. After the water enters the inlet chamber 19, the heating module 16 located above the upper end cover 15 starts to heat the water inside the inlet chamber 19. At the same time, the rotor assembly 22 located inside the mounting cavity 24 will rotate. After the rotor assembly 22 rotates, it drives the impeller 25 at its upper end. When the impeller 25 rotates, it will start to pressurize the water inside the inlet chamber 19 and make the water inside the inlet chamber 19 reach a pressurized state, and then discharge it to the outside through the drain pipe 14.

[0050] Furthermore, when the rotor assembly 22 rotates at high speed, it will generate high heat. However, due to the heat dissipation components on the rotor assembly 22 that have a heat dissipation effect, the gas inside the cavity can be circulated at high speed. When the rotor assembly 22 rotates, the annular plates 30 at both ends of the cast aluminum ring 29 and the outer side of the disturbance blades 31 will form a high-pressure zone, causing the air around the annular plates 30 and disturbance blades 31 to be thrown outward. Then, the high-pressure air will rise upward and enter the ventilation slot 20, and then be discharged to the outside through the exhaust port 23 provided on the outer side of the upper housing 11.

[0051] Furthermore, when the rotor assembly 22 achieves high-speed rotation, the inner side of the cast aluminum ring 29 will be in a low-pressure zone. The air in the low-pressure zone will enter from the bottom of the lower housing 12 and then enter the mounting cavity 24, causing the cold air to form a cold and hot air surrounding the rotor assembly 22. The air will continue to rise along the inner wall of the mounting cavity 24, eventually rising into the ventilation slot 20 and being discharged to the outside through the exhaust port 23. When the turbulence blade 31 rotates, the serrations at the front end of the turbulence blade 31 will cut and disturb the surrounding hot air, thus achieving a better heat dissipation effect.

[0052] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An improved integrated motor and pump module for a dishwasher, comprising a mounting bracket (13), characterized in that: A lower housing (12) is installed above the mounting bracket (13), and an upper housing (11) is fixedly installed above the lower housing (12). An upper end cover (15) is fixedly connected to the open end of the upper housing (11). A water inlet cavity (19) is formed between the upper housing (11) and the upper end cover (15). The upper housing (11) and the lower housing (12) are connected to form a mounting cavity (24). A rotor assembly (22) for rotation is rotatably installed inside the mounting cavity (24). The rotor assembly (22) includes a central shaft (26), with rotating bearings (27) fixedly installed at both ends of the central shaft (26). A rubber sealing ring (28) is fixedly installed above the rotating bearings (27) located at the upper end of the central shaft (26), and a cast aluminum ring (29) for enhancing heat dissipation is installed between the two rotating bearings (27).

2. The integrated motor and pump module for an improved dishwasher according to claim 1, characterized in that: The cast aluminum ring (29) is symmetrically equipped with heat dissipation components at its upper and lower ends. The heat dissipation components include an annular plate (30) and a disturbance blade (31) is fixedly connected above the annular plate (30). The annular plate (30) and the disturbance blade (31) are arranged alternately.

3. The integrated motor and pump module for an improved dishwasher according to claim 2, characterized in that: The upper housing (11) has a ventilation groove (20) on the side near the lower housing (12), and the ventilation groove (20) is connected to the interior of the mounting cavity (24).

4. The integrated motor and pump module for an improved dishwasher according to claim 3, characterized in that: The inner side of the cast aluminum ring (29) is provided with an annular groove (34), and the annular groove (34) is fixedly connected to the central rotating shaft (26).

5. The integrated motor and pump module for an improved dishwasher according to claim 4, characterized in that: The lower housing (12) has a cavity inside, and a coil (21) is installed inside the cavity. A wire clamp (32) is held on the outside of the coil (21). The coil (21) and the cavity inside the lower housing (12) are filled with plastic, which is made of BMC or thermoplastic material.

6. The integrated motor and pump module for an improved dishwasher according to claim 5, characterized in that: The upper end of the central rotating shaft (26) passes through the upper housing (11), and an impeller (25) is fixedly connected to the end of the central rotating shaft (26). The impeller (25) is located inside the water inlet chamber (19).

7. The integrated motor and pump module for an improved dishwasher according to claim 6, characterized in that: The upper housing (11) has an array of drainage pipes (14) and four exhaust holes (23) on its outer side, the exhaust holes (23) being connected to the interior of the ventilation slot (20).

8. The integrated motor and pump module for an improved dishwasher according to claim 7, characterized in that: A heating module (16) is fixedly installed on the upper end cover (15). The heating tube of the heating module (16) extends into the water inlet cavity (19). A water inlet pipe (17) for water inlet is fixedly connected above the upper end cover (15).

9. The integrated motor and pump module for an improved dishwasher according to claim 8, characterized in that: The outer end of the disturbance blade (31) is provided with serrated patterns, and a capacitor (18) is fixedly installed on the outer side of the mounting bracket (13).

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