Easy-to-assemble household pump

Abstract

This solution discloses an easily assembled household pump, including an upper housing and a lower housing, which are interlocked to form an interlocking space. The pump body, motor, and impeller are installed within this space. Both the upper and lower housings are integrally injection molded. The motor includes a motor housing, which is formed from sheet metal. A filter assembly is also installed within the interlocking space. A solenoid valve is installed at the lower end of the filter assembly. The solenoid valve is connected to the lower housing by a solenoid valve quick-release pin. The solenoid valve quick-release pin is U-shaped; at the bottom of the U-shape corresponding to the solenoid valve quick-release pin, the lower housing has a structure to prevent the solenoid valve quick-release pin from retracting. The advantages of this solution are: optimized structural design, making installation more convenient and accurate, eliminating potential installation defects, and contributing to the assurance of finished product quality.

Description

Technical Field

[0001] This invention relates to the field of pumps, specifically an easy-to-assemble household pump. Background Technology

[0002] Chinese patent document CN114233640A, published on March 25, 2022, discloses "a dual-channel water pump with high-efficiency heat dissipation," comprising a water pump outer cylinder, a stator assembly, a rotor assembly, and a guide shell. The stator assembly is hermetically disposed within the water pump outer cylinder, and the rotor assembly is rotatably disposed within the stator assembly. The outer walls of the water pump outer cylinder and the stator assembly enclose a first space, and the outer wall of the rotor assembly and the inner wall of the stator assembly enclose a second space. An impeller connected to the rotor assembly is provided within the guide shell, and an installation cavity for the impeller is provided within the guide shell. Several vortex grooves are provided on the peripheral wall of the installation cavity, and water permeable holes for the rotor assembly are provided inside the guide shell. The water pump inlet, vortex grooves, first space, and water pump outlet form a first flow channel. The water pump inlet, water permeable holes, second space, and water pump outlet form a second flow channel. A stator support is provided on the outside of the stator assembly, and several cooling grooves are provided on the stator support. Baffle rings are provided at both ends of the stator support.

[0003] Traditional pumps of this type have structural design flaws, are relatively complex to assemble, and are prone to defects such as improper installation of parts, which have a significant impact on their performance. Summary of the Invention

[0004] Based on the above issues, this solution provides an easy-to-assemble household pump with optimized structural design, making installation more convenient and precise, eliminating potential installation defects, and helping to ensure the quality of the finished product.

[0005] To achieve the purpose of the invention, the present invention adopts the following technical solution: an easily assembled household pump, comprising an upper housing and a lower housing, which are fastened together to form a fastening space, within which a pump body, a motor, and an impeller are installed.

[0006] Both the upper and lower shells are integrally injection molded.

[0007] The motor includes a motor housing, which is formed from sheet metal.

[0008] As a preferred option, a filter assembly is also installed within the interlocking space.

[0009] Preferably, a solenoid valve is installed at the lower end of the filter assembly.

[0010] Preferably, the solenoid valve is connected to the lower housing by a solenoid valve quick-release pin.

[0011] Preferably, the quick-release pin of the solenoid valve is U-shaped; at the bottom of the U-shape corresponding to the quick-release pin of the solenoid valve, the lower housing is provided with a structure to prevent the quick-release pin of the solenoid valve from retracting.

[0012] Preferably, a controller is also installed within the locking space; the controller includes a controller body, a controller top cover, and a controller box, with the controller body located inside the controller box and the controller top cover sealingly covering the controller box.

[0013] Preferably, the controller's top cover has an opening, and a button panel is sealed over the opening; the button panel is connected to the controller body via signal transmission.

[0014] Preferably, a casing is also fitted over the motor housing, forming a flow channel between the motor housing and the casing; the controller is fixed on the casing, and a sealing structure is provided between the controller and the casing.

[0015] Preferably, the front end of the motor is provided with a front end cover; an impeller cavity is provided between the front end cover and the pump body, and a guide wheel is fixed in the impeller cavity. The guide wheel is flared, with a larger front end and a smaller rear end; the guide wheel divides the impeller cavity into two parts: the front part is provided with an impeller fixed to the motor shaft, and the rear part is fixed with a motor bracket; the rear end of the guide wheel presses against the motor bracket; a front end cover rib is provided on the front end cover, the position of the front end cover rib corresponds to the position of the rear end of the guide wheel, and there is a gap between the front end face of the front end cover rib and the rear end face of the motor bracket.

[0016] Preferably, the interlocking space is provided with a water outlet, and a multi-sensor assembly is installed in the water outlet; the multi-sensor assembly includes a pressure sensor and a flow sensor.

[0017] This design features an easily assembled household pump consisting of an upper and lower casing that interlock to form a sealed space. The pump body, motor, impeller, and other parts and components are installed within this space, leaving only the inlet and outlet ports and electrical connection interface on the outside. For ease of installation, instead of traditional metal casing assembly, a one-piece injection molding process is used, creating separate upper and lower casings that are simply interlocked. The motor housing also abandons the traditional cast-in-place design, opting instead for sheet metal molding. This serves two purposes: firstly, it is lightweight and easy to assemble; secondly, it facilitates motor heat dissipation.

[0018] The filter assembly, including the frame and filter screen, is integrated into the interlocking space to filter the incoming water. A solenoid valve is installed below the filter assembly and can be opened periodically to discharge filter residue via a connected connector. For ease of assembly, the solenoid valve is connected to the pump body via a U-shaped pin. After the solenoid valve is secured with the pin, a retaining mechanism on the lower housing prevents the pin from retracting. For example, a protrusion can be provided on the lower housing at the position corresponding to the bottom of the U-shaped pin to hold the bottom of the pin in place.

[0019] The controller is shaped like a box and integrated within the snap-fit ​​space, forming a relatively independent compartment. The main electronic components of the controller are all housed within this compartment. Only the top cover of the controller has an opening, through which the button panel is sealed with a sealing material for operation. The bottom of the button panel connects to the controller body via this opening. The controller body and the motor are also electrically connected via a wiring harness. This harness corresponds to the opening on the bottom cover of the controller, where a waterproof plug can be installed. The wiring harness passes through the waterproof plug, ensuring that the controller's internal components remain dry under normal use and preventing circuit malfunctions due to moisture.

[0020] The outlet is equipped with a multi-sensor assembly, primarily including pressure and flow sensors, for user reference. Alternatively, a central control chip can be integrated into the controller to transmit signals from each sensor, enabling automatic operation and control. The flow sensor can utilize a combination of a turbine and a Hall effect sensor. When water flows through the outlet, the turbine is driven by the water flow. The turbine blades have magnetic materials at their tips, and the turbine's rotation is sensed by the Hall effect sensor, thus measuring the turbine's speed. Through a specific conversion rule, the corresponding flow rate can be obtained.

[0021] The motor housing, together with the front and rear covers, forms a sealed structure, while the barrel is fitted outside the motor housing to form a flow channel. When the motor drives the impeller to rotate, water flows through the flow channel outside the motor housing and inside the barrel, which can carry away the heat of the motor, thereby ensuring the heat dissipation effect of the motor.

[0022] The rear end of the guide wheel rests against the front end face of the motor bracket, and a corresponding protruding rib is provided on the front end cover. There is a gap between the front end cover rib and the rear end face of the motor bracket. This design is to accommodate the increased pressure inside the impeller cavity after the motor drives the impeller to rotate. This pressure could cause the guide wheel to be subjected to rearward force, leading to rearward deformation and bulging of the motor bracket. Prolonged deformation could prevent the motor bracket from returning to its original position, potentially causing the motor to misalign, affecting normal motor operation, and resulting in noise and vibration problems. When the motor bracket slightly deforms and bulges backward, it is pushed back by the front end cover rib, ensuring that the motor bracket does not deform further.

[0023] In summary, the beneficial effects of this solution are: it optimizes the structural design, making installation more convenient and accurate, eliminating potential installation defects, and contributing to the assurance of finished product quality. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is an exploded view of the parts of this invention;

[0026] Figure 3 This is a cross-sectional view of the invention along the motor axis;

[0027] Figure 4 This is an exploded view of the parts from another perspective of the present invention.

[0028] The components include: 1. Upper housing; 2. Lower housing; 21. Anti-reverse pin and retaining plate.

[0029] 3 pump body, 31 impeller chamber,

[0030] 4. Motor, 41. Motor housing, 42. Motor barrel, 43. Front cover, 431. Front cover rib, 44. Motor bracket, 45. Winding, 46. Winding assembly, 47. Rear cover.

[0031] 5 impellers, 6 filter components

[0032] 7. Controller, 71. Controller body, 72. Controller top cover, 73. Controller bottom cover, 74. Button panel.

[0033] 8 multi-sensor assembly, 81 pressure sensor, 82 flow sensor, 83 turbine,

[0034] 9. Solenoid valve; 91. Solenoid valve quick-release pin; 92. Pin hole; 93. Solenoid valve connector.

[0035] 10 Guide wheel, 11 Inlet, 12 Outlet, 13 Pump cover. Detailed Implementation

[0036] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0037] Example

[0038] The example is an easy-to-assemble household pump. For instance... Figure 1 As shown, this easy-to-assemble household pump has an overall shape that is approximately rectangular, with rounded ends on the left and right sides. The pump consists of an upper housing 1 and a lower housing 2, both integrally injection molded and interlocked to form a locking space. On the upper end face of the pump, the pump cover 13 is visible on the left, and the outlet 12 is visible on the right; on the upper left end face, the inlet 11 is visible above, and the solenoid valve connector 93 is visible below.

[0039] like Figure 2 , Figure 3 As shown, this easy-to-assemble household pump includes parts, components, and assemblies such as pump body 3, motor 4, impeller 5, filter assembly 6, controller 7, multi-sensor assembly 8, solenoid valve 9, and guide wheel 10.

[0040] The pump body 3 is located on the left side of the locking space, connected to the inlet 11 on the left and to the pump cover 13 on the top. The pump body 3 has a vertical receiving space for installing the filter assembly 6. The filter assembly 6 includes a frame and a filter screen, which filters the incoming water. Below the filter assembly 6, the pump body 3 is equipped with a solenoid valve 9, which is connected to a solenoid valve connector 93. In this example, the solenoid valve 9 is quickly connected to the pump body 3 via a solenoid valve quick-release pin 91. Specifically, a pair of pin holes 92 are provided at the lower end of the pump body 3, and the shape of the solenoid valve quick-release pin 91 resembles the letter U, with each end inserted into one of the pin holes 92. After inserting the solenoid valve quick-release pin 91, the lower housing 2 can be assembled, and the anti-retraction structure on the lower housing 2 prevents the solenoid valve quick-release pin 91 from coming loose from the pin holes 92. See details. Figure 4 As can be seen, an upwardly extending anti-retraction stop 21 is provided at the corresponding position on the bottom of the lower housing 2. After assembly, the anti-retraction stop 21 abuts against the U-shaped bottom of the solenoid valve quick-release pin 91. By controlling the opening and closing of the solenoid valve 9, the filter residue can be discharged from the solenoid valve connector 93.

[0041] The motor housing 41 of the motor 4 is made of sheet metal and is cylindrical in shape, arranged in the left-right direction. A cylinder 42 is fitted onto the outside of the motor housing 41. The gap between the motor housing 41 and the cylinder 42 forms a flow channel for water to flow through. When the water flows through, it can also carry away the heat of the motor 4 simultaneously.

[0042] A controller 7 is mounted on top of the casing 42. The controller 7 includes a controller body 71, a controller cover 72, and a controller box 73. The controller body 71 is located inside the controller box 73 and includes a large number of electronic components such as the main control chip. The controller cover 72 seals over the controller box 73. An opening is provided on the controller cover 72, through which the button panel 74 is electrically connected to the controller body 71. The button panel 74 is then bonded to the controller cover 72 with epoxy adhesive, sealing the opening. The area of ​​the controller box 73 closest to the casing 42 is covered with shock-absorbing sealing tape. An opening is located on the rear side of the controller box 73 for routing power and signal cables. This opening is sealed with a sealing plug to ensure the inside of the controller box 73 remains dry, and the wiring harness is threaded through the sealing plug.

[0043] A water outlet 12 is located above the barrel 42 and to the right of the controller 7. The lower opening of the water outlet 12 is connected through the barrel 42. A multi-sensor assembly 8 is installed inside the water outlet 12, which in this example includes a pressure sensor 81 and a flow sensor 82. Figure 2 As can be seen, the turbine 83 is installed inside the outlet 12. The blades of the turbine 83 have magnetic materials at their tips. The rotation of the turbine is sensed by the Hall element, thereby measuring the rotational speed of the turbine 83. Through a certain conversion rule, the flow rate value can be obtained.

[0044] The left end of the motor 4 is provided with a front cover 43, and the space between the front cover 43 and the pump body 3 forms an impeller cavity 31. A guide wheel 10 is provided inside the impeller cavity 31, dividing the impeller cavity 31 into two parts, front and rear (here, front and rear are indicated by the motor axis, i.e., ...). Figure 3 (Left is front, right is rear). The guide wheel 10 is a trumpet shape, wider at the front and narrower at the rear. An impeller 5 is housed within the front space of the trumpet shape, and the impeller 5 is connected to the front end of the motor shaft of the motor 4. A motor bracket 44 is fixed to the rear of the impeller cavity 31. In this example, the motor bracket 44 is a thin sheet, and the right side of the motor bracket 44 is the front end cover 43 and the left end of the motor housing 41. See also... Figure 3 The small opening at the rear end of the guide wheel 10 rests against the left side of the motor bracket 44. Corresponding to the abutment point, the front cover 43 has a ring of front cover ribs 31 protruding to the left. The end face of the front cover ribs 31 and the left side of the motor bracket 44 are reserved with a small gap. When working, the left side of the motor bracket 44 is under pressure, and a small amount of deformation to the right is allowed. After the work is completed, the deformation is reset.

[0045] In this example of an easily assembled household pump, water enters the pump through inlet 11, is first filtered by filter assembly 6, and then enters impeller chamber 31. Motor 4 drives impeller 5 to rotate, using centrifugal force to throw the water out, which then flows through the channel between motor housing 41 and barrel 42 and is discharged through outlet 12. During discharge, multi-sensor assembly 8 operates, transmitting corresponding data to controller 7, which is then automatically controlled by the main control chip.

Claims

1. An easily assembled household pump, comprising an upper housing (1) and a lower housing (2), which are fastened together to form a fastening space, wherein a pump body (3), a motor (4), and an impeller (5) are installed within the fastening space, characterized in that, The upper shell (1) and the lower shell (2) are both integrally injection molded; The motor (4) includes a motor housing (41), which is formed by sheet metal. A controller (7) is also installed in the locking space; the controller (7) includes a controller body (71) and a controller box (73), with the controller body (71) located inside the controller box (73); A machine barrel (42) is also fitted outside the motor housing (41), and a flow channel is formed between the motor housing (41) and the machine barrel (42); The front end of the motor (4) is provided with a front end cover (43); an impeller cavity (31) is provided between the front end cover (43) and the pump body (3), and a horn-shaped guide wheel (10) is fixed in the impeller cavity (31). The guide wheel (10) is larger at the front end and smaller at the rear end; a motor bracket (44) is fixed at the rear of the impeller cavity (31); the rear end of the guide wheel (10) presses against the motor bracket (44); a front end cover rib (431) is provided on the front end cover (43) protruding to the front side, and a gap is provided between the front end face of the front end cover rib (431) and the rear end face of the motor bracket (44); The interlocking space is provided with an outlet (12), and a multi-sensor assembly (8) is installed in the outlet (12).

2. The easily assembled household pump according to claim 1, characterized in that, A filter assembly (6) is also installed within the interlocking space.

3. The easily assembled household pump according to claim 2, characterized in that, A solenoid valve (9) is installed at the lower end of the filter assembly (6).

4. The easily assembled household pump according to claim 3, characterized in that, The solenoid valve (9) is connected to the lower housing (2) by a solenoid valve quick-release pin (91).

5. The easily assembled household pump according to claim 4, characterized in that, The quick-release pin (91) of the solenoid valve is U-shaped; at the position of the bottom of the U-shape corresponding to the quick-release pin (91) of the solenoid valve, the lower housing (2) is provided with a structure to prevent the quick-release pin (91) of the solenoid valve from exiting.

6. The easily assembled domestic pump according to any one of claims 1 to 5, characterized in that, The controller (7) also includes a controller cover (72), which seals over the controller box (73).

7. A household pump that is easy to assemble according to claim 6, characterized in that, The controller cover plate (72) has an opening, and a button plate (74) is sealed on the opening; the button plate (74) is connected to the controller body (71) for signal transmission.

8. The easily assembled household pump according to claim 1, characterized in that, The controller (7) is fixed on the barrel (42), and a sealing structure is provided between the controller (7) and the barrel (42).

9. The easily assembled domestic pump according to any one of claims 1 to 5, characterized in that, The guide wheel (10) divides the impeller cavity (31) into two parts, front and rear. The front part is provided with an impeller (5) fixed to the shaft of the motor (4). The position of the front cover rib (431) corresponds to the position of the rear end of the guide wheel (10).

10. The easily assembled domestic pump according to any one of claims 1 to 5, characterized in that, The multi-sensor assembly (8) includes a pressure sensor (81) and a flow sensor (82).

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