Drainage pump with half-load shunting and noise reduction functions and washing machine
By designing the connection pipe, the first pipe and the second pipe in the washing machine drain pump, a half-load shunt is formed, which solves the impact noise problem caused by the difficulty of drainage of residual water in the half-load state of the drain pump, and achieves the effect of reducing noise and improving hydraulic performance.
Patent Information
- Application Number
- CN202421961388.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-13
AI Technical Summary
In the half-load state of the existing washing machine drain pump, residual water is difficult to discharge, resulting in shock noise.
A half-load shunt noise reduction drainage pump is designed. By providing a connecting pipe, a first pipe and a second pipe in the pump body, a half-load shunt in the direction of circulating water with a low head is formed to reduce impact noise.
It effectively reduces the impact noise of water flow in the drainage pipe, improves hydraulic performance, and ensures the smoothness of the drainage process.
Smart Images
Figure CN222879911U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of washing machine drainage pumps, and in particular to a drainage pump and a washing machine with half-load diversion and noise reduction. Background Art
[0002] The washing machine drain pump is an important component inside the washing machine. Its main function is to drain the water from the washing machine.
[0003] Reference Figure 1 The drainage pump structure in the existing related technology includes a motor 1 and a pump body 2. The motor 1 has a motor shaft 11 and an impeller 12 installed at one end of the motor shaft 11. The pump body 2 has a water inlet chamber 21, a drainage chamber 22 and a partition 23 installed between the water inlet chamber 21 and the drainage chamber 22. The partition 23 is provided with a water hole 24, and the water hole 24 is used to connect the water inlet chamber 21 with the drainage chamber 22. The side wall of the water inlet chamber 21 has a water inlet pipe 25, and the side wall of the drainage chamber 22 has a drainage pipe 26. The impeller 12 is placed in the drainage chamber 22.
[0004] During the use of the above-mentioned drainage pump structure, when the amount of residual water discharged from the pump body is not much, that is, when the drainage pump is in a half-load state of half water and half air to discharge the residual water, since the drainage pump is not a vacuum pump and the structure has a certain head, the drainage pump cannot discharge all the remaining residual water to the outside through the upward curved drainage pipe. The residual water is driven by the high-speed rotation of the drainage pump impeller and is constantly moving in the drainage pipe but is always difficult to be discharged, resulting in a large amount of impact noise. Summary of the invention
[0005] In order to help solve the problem that residual water is constantly moving in the drainage pipe driven by the high-speed rotation of the drainage pump impeller but is always difficult to be discharged, resulting in a large amount of impact noise, the present application provides a half-load shunt noise reduction drainage pump and washing machine, adopting the following technical solution: including a motor and a pump body, the motor having a motor shaft and an impeller installed at one end of the motor shaft, the pump body having a water inlet chamber, a drainage chamber and a partition installed between the water inlet chamber and the drainage chamber, the partition having a water hole, the water hole being used to connect the water inlet chamber with the drainage chamber, the side wall of the water inlet chamber having a water inlet pipe, the side wall of the drainage chamber having a drainage pipe, the impeller is placed in the drainage chamber, the side wall of the water inlet chamber having a first pipe, the side wall of the drainage pipe having a second pipe, a connecting pipe is arranged between the first pipe and the second pipe, one end of the connecting pipe is installed on the outer side wall of the first pipe, and the other end of the connecting pipe is installed on the outer side wall of the second pipe.
[0006] In a specific possible implementation manner, the axis of the first tube and the axis of the second tube are arranged in the same plane and the two axes intersect.
[0007] In a specific embodiment, the outer diameter of the first tube is equal to the outer diameter of the second tube.
[0008] In a specific implementation manner, the inner diameter of the second pipe is 0.1 to 0.3 times the inner diameter of the drainage pipe.
[0009] In a specific possible implementation manner, one end of the connecting tube is interference fit with the outer side wall of the first tube, and the other end of the connecting tube is interference fit with the outer side wall of the second tube.
[0010] In a specific possible implementation scheme, a drainage pipeline is provided on the outer side wall of the top end of the drainage pipe.
[0011] In a specific embodiment, the connecting pipe is a bent pipe.
[0012] In a specific possible implementation manner, the connecting pipe is made of rubber material.
[0013] In a specific possible implementation scheme, the water inlet cavity, the water inlet pipe, the first pipe, the drainage cavity, the drainage pipe, and the second pipe are made of engineering plastics.
[0014] In a specific possible implementation manner, a washing machine is also disclosed, comprising the above-mentioned half-load diversion and noise reduction drainage pump.
[0015] To sum up, the present application has at least the following beneficial technical effects: when the pump body is in a half-load state, the impeller in the drainage chamber rotates, and the residual water in the drainage chamber can only pass through the drainage pipe, the second pipe, the connecting pipe, the first pipe, the water inlet chamber and the water hole in sequence, and finally return to the drainage chamber, forming a half-load diversion in the direction of circulating water with a low head in a reciprocating cycle, which effectively reduces the impact noise of the water flow in the drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a drainage pump in the related technology.
[0017] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0018] Figure 3 It is a cross-sectional schematic diagram used to illustrate the first tube in the embodiment of the present application.
[0019] Figure numerals: 1. motor; 2. pump body; 3. connecting pipe; 4. drainage pipe; 11. motor shaft; 12. impeller; 21. water inlet chamber; 22. drainage chamber; 23. partition; 24. water hole; 25. water inlet pipe; 26. drainage pipe; 27. first pipe; 28. second pipe. DETAILED DESCRIPTION
[0020] The following is combined with Figure 2-3This application is described in further detail.
[0021] The embodiments of the present application disclose a drainage pump and a washing machine with half-load diversion and noise reduction.
[0022] Reference Figure 2 and Figure 3 The half-load diversion noise reduction drainage pump includes a motor 1 and a pump body 2. The motor 1 has a motor shaft 11 and an impeller 12 installed at one end of the motor shaft 11. The pump body 2 has a water inlet chamber 21, a drainage chamber 22 and a partition 23 installed between the water inlet chamber 21 and the drainage chamber 22. A water hole 24 is provided on the partition 23. The water hole 24 is used to connect the water inlet chamber 21 with the drainage chamber 22 while optimizing the path of the water flow. The partition 23 divides the interior of the pump body 2 into two independent spaces, the water inlet chamber 21 and the drainage chamber 22. The water inlet chamber 21 is responsible for receiving an external water source, while the drainage chamber 22 is the area where the impeller 12 works and pushes the water to be discharged. This separation ensures the orderly flow of water in the pump body 2 and reduces the possibility of water flow chaos.
[0023] Reference Figure 2 and Figure 3 The side wall of the water inlet chamber 21 has a water inlet pipe 25, the side wall of the drainage chamber 22 has a drainage pipe 26, the impeller 12 is placed in the drainage chamber 22, the side wall of the water inlet chamber 21 has a first pipe 27, the side wall of the drainage pipe 26 has a second pipe 28, a connecting pipe 3 is arranged between the first pipe 27 and the second pipe 28, one end of the connecting pipe 3 is installed on the outer side wall of the first pipe 27, and the other end of the connecting pipe 3 is installed on the outer side wall of the second pipe 28.
[0024] Reference Figure 2 and Figure 3 A drainage pipe 4 is sleeved on the outer wall of the top end of the drainage pipe 26. The outer wall of the top end of the drainage pipe 26 is interference fit with the drainage pipe 4. The interference fit ensures that the connection parts can maintain close contact when subjected to pressure, vibration or temperature changes by creating a certain amount of interference between the mating surfaces, thereby ensuring the sealing of the output end of the drainage pump and reducing the possibility of leakage during the drainage process.
[0025] Reference Figure 2 and Figure 3The water inlet cavity 21, the water inlet pipe 25, the first pipe 27, the drainage cavity 22, the drainage pipe 26, and the second pipe 28 are integrally injection molded by engineering plastics. The axis of the first pipe 27 and the axis of the second pipe 28 are arranged in the same plane and the two axes intersect. The outer diameter of the first pipe 27 is equal to the outer diameter of the second pipe 28. The connecting pipe 3 is a curved pipe made of rubber. The inner diameter of the second pipe 28 is between 0.1 and 0.3 times the inner diameter of the drainage pipe 26. One end of the connecting pipe 3 is interference fit with the outer wall of the first pipe 27, and the other end of the connecting pipe 3 is interference fit with the outer wall of the second pipe 28, so that the connecting pipe 3 can be firmly connected to the pump body 2, and at the same time, the fluid is allowed to perform complex flow path conversion inside the pump body 2, thereby improving the hydraulic performance.
[0026] The implementation principle of the embodiment of the present application is as follows: when water flows through the water inlet pipe 25, the water inlet chamber 21 and the water hole 24 in sequence, and enters the drainage chamber 22, and the drainage chamber 22 is filled with water, the impeller 12 in the drainage chamber 22 rotates, and the water in the drainage chamber 22 is discharged to the outside of the drainage pipe 4 with a high lift through the drainage pipe 26;
[0027] When air enters the drainage chamber 22 and only a small amount of residual water remains, the residual water can no longer be discharged through the drainage pipe 4 with a high lift. At this time, it enters a half-water and half-air state, that is, a half-load state. The impeller 12 in the drainage chamber 22 rotates, and the residual water in the drainage chamber 22 can only pass through the drainage pipe 26, the second pipe 28, the connecting pipe 3, the first pipe 27, the water inlet chamber 21 and the water hole 24 in sequence, and finally return to the drainage chamber 22. In this way, a half-load diversion in the direction of the circulating water with a low lift is formed in a reciprocating manner, which effectively reduces the impact noise of the water flow in the drainage pipe 4.
[0028] When the drainage chamber 22 is filled with water again in the next cycle, the impeller 12 in the drainage chamber 22 rotates to discharge the water in the drainage chamber 22 through the drainage pipe 26 to the outside of the drainage pipeline 4 with a high lift.
[0029] The utility model also provides a washing machine, comprising the above-mentioned half-load diversion and noise reduction drainage pump.
[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. A drainage pump with half-load flow diversion and noise reduction, characterized in that: The invention comprises a motor (1) and a pump body (2), wherein the motor (1) comprises a motor shaft (11) and an impeller (12) mounted on one end of the motor shaft (11), and the pump body (2) comprises a water inlet chamber (21), a water discharge chamber (22), and a partition plate (23) mounted between the water inlet chamber (21) and the water discharge chamber (22), wherein the partition plate (23) is provided with a water through hole (24), wherein the water through hole (24) is used to connect the water inlet chamber (21) with the water discharge chamber (22), and the side wall of the water inlet chamber (21) comprises a water inlet pipe (24). 5), the side wall of the drainage chamber (22) is provided with a drainage pipe (26), the impeller (12) is placed in the drainage chamber (22), the side wall of the water inlet chamber (21) is provided with a first pipe (27), the side wall of the drainage pipe (26) is provided with a second pipe (28), a connecting pipe (3) is provided between the first pipe (27) and the second pipe (28), one end of the connecting pipe (3) is mounted on the outer side wall of the first pipe (27), and the other end of the connecting pipe (3) is mounted on the outer side wall of the second pipe (28).
2. The drainage pump with half-load flow diversion and noise reduction according to claim 1 is characterized in that: The axis of the first tube (27) and the axis of the second tube (28) are arranged in the same plane and the two axes intersect.
3. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: The outer diameter of the first tube (27) is equal to the outer diameter of the second tube (28).
4. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: The inner diameter of the second pipe (28) is 0.1 to 0.3 times the inner diameter of the drainage pipe (26).
5. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: One end of the connecting tube (3) is in interference fit with the outer wall of the first tube (27), and the other end of the connecting tube (3) is in interference fit with the outer wall of the second tube (28).
6. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: The outer side wall of the top end of the drainage pipe (26) is sleeved with a drainage pipeline (4).
7. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: The connecting pipe (3) is a curved pipe.
8. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: The connecting pipe (3) is made of rubber material.
9. The drainage pump with half-load flow diversion and noise reduction according to claim 1, characterized in that: The water inlet chamber (21), the water inlet pipe (25), the first pipe (27), the drainage chamber (22), the drainage pipe (26), and the second pipe (28) are made of engineering plastics.
10. A washing machine, characterized in that: A drainage pump with half-load flow diversion and noise reduction comprising the method according to any one of claims 1 to 9.