Integrated pump for dishwasher

Abstract

The present invention relates to a washing pump in the field of household appliances, specifically an integrated pump for dishwashers, including a motor for providing power to a pump body, two pump bodies with the same structure are respectively installed at both ends of the motor, a motor shaft is provided on the motor, the motor shaft is provided with an axially movable magnetic pole impeller, the surface of the magnetic pole impeller is inlaid with a magnet, the pump body is provided with an iron pump shaft, a coil is wound around the pump shaft, and a waterproof sleeve is provided on the coil, a moving impeller is provided on the pump shaft, the bottom of the moving impeller is concave, and a plurality of latch teeth are provided centripetally around the concave periphery, and the latch teeth match the magnetic pole impeller. By energizing the electromagnet of the pump shaft, it is possible to control which water pump installed at both ends of the motor is working and which is not working, thereby solving the problem that the vacuum negative pressure generated by the non-working water pump affects the motor, and at the same time directly using the power of the positive output of the motor, thereby improving the motor efficiency. It has the advantages of small size, simple structure and high efficiency.

Description

Technical Field

[0001] The invention relates to a washing pump in the field of household appliances, in particular to an integrated pump for a dishwasher. Background Art

[0002] With the improvement of living standards, consumers have higher and higher requirements for the quality of life, and thus higher and higher requirements for product quality, performance, humanization of use, intelligent operation and other aspects. As an excellent product, dishwashers have gradually entered people's lives. At present, dishwasher technology generally uses two pumps, namely a washing pump and a drainage pump. The two pumps are independent pumps, and the washing pump and the drainage pump are driven by two motors respectively. The working principle of the dishwasher is that the washing pump pumps the water entering the inner tank of the dishwasher into the spray arm of the dishwasher. The spray arm is provided with a spray hole and a drive hole. Under the action of the reaction force, the spray arm rotates, and the water sprayed by the spray arm is sprayed on the tableware on the bowl basket to wash and rinse the tableware. After a washing program is completed, the drainage pump of the dishwasher works to discharge the dirty water in the inner tank of the dishwasher. The existing dishwasher uses two pumps, which makes the cost higher, and the installation is complicated during the manufacturing process, and the production cost is high.

[0003] A Chinese patent application with application number 201611262919.3 discloses an integrated washing and draining pump for a dishwasher, including a pump and a motor for providing power to the pump. The pump includes a sealing ring arranged between an upper pump shell and a lower pump shell. A reversing valve for switching between two working modes, washing and draining, is arranged inside the pump. An impeller and a slag crushing blade mounted on the motor shaft and located above the impeller are also arranged inside the pump. The slag crushing blade and the impeller are fixed by fastening nuts. A water inlet is arranged on the upper pump shell, a washing water outlet, a drain outlet and a reversing valve mounting seat are arranged on the lower pump shell, and the reversing valve is mounted on the lower pump shell through the reversing valve mounting seat.

[0004] Although the above-mentioned integrated washing and draining pump for dishwasher combines the washing pump and the draining pump into one, it has a simple structure, low manufacturing cost and high production efficiency, and solves the problem of the separation of the washing pump and the draining pump of the dishwasher to a certain extent, but at the same time, there is the problem of interference between the washing and draining systems. When one pump is working, the other pump will be vacuumed, which will affect the load of the motor, damage the output power, and even cause the motor to burn out in serious cases.

[0005] Therefore, it is necessary to improve the shortcomings and defects of the prior art and provide an integrated pump for dishwashers that combines a washing pump and a drainage pump into one, wherein the two pumps perform their respective functions without interfering with each other, and the motor load is moderate and durable. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an integrated pump for a dishwasher with simple structure, small size and high efficiency.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions: In view of the shortcomings of the prior art, the integrated pump for the dishwasher of the present invention includes a motor for providing power to the pump body, two pump bodies with the same structure are respectively installed at both ends of the motor, a motor shaft is provided on the motor, the motor shaft is provided with an axially movable magnetic pole impeller, the surface of the magnetic pole impeller is inlaid with magnets, the pump body is provided with an iron pump shaft, a coil is wound on the pump shaft, and a waterproof sleeve is provided on the coil, a moving impeller is provided on the pump shaft, the bottom of the moving impeller is concave, and a plurality of latch teeth are arranged centripetally around the concave periphery, and the latch teeth match the magnetic pole impeller.

[0008] It can be seen that the present invention sets the pump shaft as an electromagnet, which cooperates with the magnetic pole impeller set on the motor shaft to control the operation of the water pump installed at both ends of the motor, solves the problem that vacuum negative pressure affects the operation of the motor, and does not need the motor to reverse to output power, thereby improving the motor efficiency. It has the advantages of small size, simple structure and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a schematic diagram of the structure of the present invention.

[0010] FIG. 2 is a cross-sectional view of the present invention.

[0011] Figure 3 shows Figure 2 A partial enlarged view of .

[0012] In the attached figure: 1. pump body, 2. motor, 3. water inlet pipe, 4. water inlet, 5. magnetic pole impeller, 6. pump seat, 7. water outlet, 8. moving impeller, 9. coil, 10. pump shaft, 11. sealing ring, 12. dynamic and static seals, 13. motor shaft, 14. waterproof cover, 15. magnet, 16. latch teeth. DETAILED DESCRIPTION

[0013] As shown in the figure, the integrated pump for dishwasher of the present invention comprises a motor 2 for providing power, and two pump bodies 1 with the same structure respectively installed at both ends of the motor 2. The pump body 1 is installed on the motor 2 through a sealing ring 11 and a pump seat 6. The pump body 1 is provided with a water inlet 4 and a water outlet 7, and the water inlet 4 is connected to a water inlet pipe 3. The motor 2 is provided with a motor shaft 13, and a magnetic pole impeller 5 is axially movable on the motor shaft 13 through a dynamic and static seal 12, and a magnet 15 is embedded on the surface of the magnetic pole impeller 5. The pump body 1 is provided with a pump shaft 10 made of iron material, a coil 9 is wound on the pump shaft 10, and a waterproof cover 14 is provided on the coil 9, forming a pump shaft 10 with an electromagnet function. A moving impeller 8 is provided on the pump shaft 10, the bottom of the moving impeller 8 is concave, and a plurality of latch teeth 16 are arranged centripetally around the concave periphery, and the latch teeth 16 match the magnetic pole impeller 5.

[0014] It can be seen that when the electromagnet of the pump shaft is energized, the magnetic pole impeller 5 set on the motor shaft can be sucked into the concave bottom of the impeller 8 under the action of magnetic force, and cooperate with the latch 16 to make the water pump work. A reverse current can also be passed through the electromagnet to make the electromagnet generate reverse magnetic poles, repelling the magnetic pole impeller 5 from the bottom of the impeller 8, and the water pump does not work. It can control which water pump installed at both ends of the motor is working and which is not working, solving the problem of the vacuum negative pressure generated by the non-working water pump affecting the motor, and directly using the power of the positive output of the motor, thereby improving the efficiency of the motor. It has the advantages of small size, simple structure and high efficiency.

[0015] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An integrated pump for a dishwasher, comprising a motor (2) for providing power to a pump body (1), the motor (2) being provided with a motor shaft (13), the pump body (1) being provided with a pump shaft (10), and a moving impeller (8) being provided on the pump shaft (10), characterized in that: The motor shaft (13) is provided with an axially movable magnetic pole impeller (5), and the bottom of the movable impeller (8) is provided with a plurality of latch teeth (16), and the latch teeth (16) match the magnetic pole impeller (5); The pump bodies (1) are in two pieces and have the same structure, and are respectively installed at the two ends of the motor (2); The surface of the magnetic pole impeller (5) is inlaid with magnets (15); The bottom of the impeller (8) is concave, and a circle of latching teeth (16) are arranged centrifugally around the periphery, and the latching teeth (16) match the magnetic pole impeller (5); The pump shaft (10) is made of iron, a coil (9) is wound around the pump shaft (10), and a waterproof sleeve (14) is provided on the coil (9).

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