A double-outlet water pump for washing machine

Abstract

The present invention discloses a double-outlet water pump for a washing machine, comprising a pump body, a water inlet, a filter frame, an impeller and a water outlet, wherein the filter frame is detachably placed in the pump body, and the water inlet is aligned with the water inlet end of the filter frame; the impeller is driven by a motor, and a power block is provided on the outside of the motor, and the power block is provided with two power terminals, one of which is energized, and the motor realizes forward or reverse rotation; the water outlet comprises a spray port for circulating water and a drain port for discharging water in the washing machine, and the spray port and the drain port are respectively placed on both sides of the water outlet end of the filter frame. In the present invention, a spray port and a drain port are arranged on the pump body, and the rotation direction can be adjusted to control the water to be discharged from the spray port or the drain port, and the water output can also be adjusted by adjusting the motor speed, so that the spraying and drainage of the washing machine are realized by using one motor and one water pump, the structure is simple and compact, and the drainage volume can be adjusted at the same time, which effectively improves the use performance of the spraying and drainage.

Description

Technical Field

[0001] The invention relates to the technical field of washing machines, and in particular to a double-outlet water pump for washing machines. Background Art

[0002] Washing machines are a must-have household appliance with a high usage rate. With the development of intelligent technology, they have more functions. Washing machines need to spray during the washing process to make the internal detergent mix more evenly and transfer the water containing detergent from one side to the other. After washing and during the dehydration process, drainage is required to drain the internal water flow to the drain port of the washing machine and then out of the washing machine. Both spraying and drainage require the use of water pumps.

[0003] In order to reduce the number of components and improve the space utilization of washing machines, washing machines that integrate spraying and drainage have emerged. For example, the circulating drainage pump and washing machine disclosed in Chinese invention patent application CN 109595203 A have improved the filter structure, using a filter plate to replace the partition wall surrounded by a column structure in the prior art, and there is no need to specially set a water inlet on the filter for the connection between the water inlet and the drainage outlet, which significantly simplifies the structure of the circulating drainage pump and can reduce the manufacturing cost.

[0004] However, spraying and drainage are two different directions, and the power required for spraying and drainage is also different. A single water pump speed cannot achieve spraying and drainage at the same time, which will cause uneven spraying, or difficulty in discharging mud and dirt, and reduce the drainage rate.

[0005] Therefore, the drainage and spraying of the existing washing machine generally require a water pump containing two motors, the structure is still relatively complex, and the spraying and drainage effects are lower than the use effect of using a water pump alone.

[0006] In view of this, there is an urgent need to improve the existing washing machine water pump structure to streamline the structure and improve performance. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing drainage and spray water pumps for washing machines have the problems of complex structure and poor performance.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide a double-outlet water pump for a washing machine, comprising a pump body, the pump body is provided with a water inlet, and the pump body is provided with:

[0009] A filter frame is detachably placed in the pump body, and the water inlet is aligned with the water inlet end of the filter frame;

[0010] An impeller is arranged at the rear end of the pump body, and the impeller is driven by a motor. A power block is arranged on the outer side of the motor, and each power block is provided with two power terminals. When one of the power terminals is energized, the motor realizes forward or reverse rotation;

[0011] The water outlet includes a spray port for circulating water and a drain port for discharging water in the washing machine. The spray port and the drain port are both oriented above or below the pump body and are respectively disposed on both sides of the water outlet end of the filter frame. The impeller is driven by the motor to rotate forward or reverse, driving water to flow out from the spray port or the drain port.

[0012] In another preferred embodiment, the spray port and the drain port are connected to the pump body through a spray pipe and a drain pipe respectively, the spray pipe and the drain pipe are both perpendicular to the axial direction of the pump body, the height of the spray pipe is greater than the overflow height of the water flow during drainage, and the height of the drain pipe is greater than the overflow height of the water flow during spraying.

[0013] In another preferred embodiment, the spray pipe and the drainage pipe are arranged in parallel, and respectively include an arc pipe and a straight pipe turned 90 degrees, and the water inlet of the arc pipe is consistent with the tangent direction of the pump body.

[0014] In another preferred embodiment, both ends of the filter frame are fixedly engaged with the inner wall of the pump body, a screw plug is provided at the front end of the pump body, and a motor is provided at the rear end, the front end of the filter frame abuts against the screw plug, and the rear end abuts against the boss on the inner wall of the pump body.

[0015] In another preferred embodiment, protrusions are provided on both sides of the filter frame, and a slot adapted to the protrusion is provided inside the pump body, the slot of the pump body includes a straight slot, and one side of the straight slot is provided with a flared slot extending to the front end of the pump body, and the filter frame enters the pump body from the front end of the pump body until the protrusion is inserted into the straight slot.

[0016] In another preferred embodiment, a water outlet cavity is provided at the rear side of the pump body, the impeller extends into the water outlet cavity, and the spray port and the drain port are respectively communicated with the water outlet cavity.

[0017] In another preferred embodiment, the inner wall of the water outlet chamber is provided with a first arc block and a second arc block which are arranged opposite to each other, the center of the first arc block is the center of the pump body, the inner diameter of the second arc block is larger than the first arc block, the spray port and the drain port are symmetrically arranged, and the two ends of the second arc block extend into the pipes of the spray port and the drain port respectively.

[0018] In another preferred embodiment, the rear side edge of the pump body is provided with a plurality of evenly spaced grooves and protruding teeth and a limit block, the motor is arranged in a shell, and the open end of the shell is provided with a plurality of engaging grooves and inwardly bent engaging teeth, each of the engaging teeth first enters the groove, and by rotating the shell, the engaging teeth engage with the protruding teeth, and the limit block enters one of the engaging grooves.

[0019] In another preferred embodiment, a stator assembly and a rotor assembly are provided on the inner side of the motor, two poles are provided on the coil of the rotor assembly, and the two power terminals are respectively connected to the two poles in a one-to-one correspondence.

[0020] Compared with the prior art, the present invention provides a spray port for circulating water and a drain port for discharging water in the washing machine on the pump body. The impeller is driven to rotate by a motor, and the rotation direction can be adjusted to control the discharge of water from the spray port or the drain port. The water output can also be adjusted by adjusting the motor speed. Therefore, the spraying and drainage of the washing machine are realized by using one motor and one water pump. The structure is simple and compact, and the drainage volume can be adjusted at the same time, which effectively improves the performance of spraying and drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is an exploded view of the internal components of the pump body of the present invention;

[0023] Figure 3 It is a schematic diagram of the decomposition mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the front end of the pump body in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the rear end of the pump body in the present invention. DETAILED DESCRIPTION

[0026] The present invention provides a double-outlet water pump for a washing machine, a spray port for circulating water and a drain port for discharging water in the washing machine are arranged on the pump body, the impeller is driven to rotate by a motor, the rotation direction can be adjusted to control the water to be discharged from the spray port or the drain port, and the water output can be adjusted by adjusting the motor speed, so the spraying and drainage of the washing machine are realized by using one motor and one water pump, the structure is simple and compact, and the drainage volume can be adjusted at the same time, which effectively improves the use performance of spraying and drainage. The present invention is described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0027] like Figure 1 and Figure 2As shown, a dual-outlet water pump for a washing machine provided by the present invention comprises a pump body 10. The pump body 10 is provided with a water inlet 11. The pump body 10 comprises a filter frame 20, an impeller 40 and a water outlet.

[0028] The filter frame 20 is detachably placed in the pump body 10, and the water inlet 11 is aligned with the water inlet end of the filter frame 20. The impeller 40 is arranged at the rear end of the pump body 10, and the impeller 40 is driven by a motor. A power block 31 is arranged on the outside of the motor, and the power block 31 is respectively provided with two power terminals. When one of the power terminals is energized, the motor realizes forward or reverse rotation. The water outlet includes a spray port 12 for circulating water and a drain port 13 for draining water from the washing machine. The spray port 12 and the drain port 13 are both facing the top or bottom of the pump body 10, and are respectively arranged on both sides of the water outlet end of the filter frame 20. Driven by the motor, the impeller 40 rotates forward or reversely, driving the water to flow out from the spray port 12 or the drain port 13.

[0029] In the present invention, a spray port 12 for circulating water and a drain port 13 for discharging water in the washing machine are arranged on the pump body 10. The impeller 40 is driven to rotate by a motor, and the rotation direction can be adjusted to control the discharge of water from the spray port 12 or the drain port 13. The water output can also be adjusted by adjusting the motor speed. Therefore, the spraying and drainage of the washing machine are realized by using one motor and one water pump. The structure is simple and compact, and the drainage volume can be adjusted at the same time, which effectively improves the performance of spraying and drainage.

[0030] In a preferred embodiment, the spray port 12 and the drain port 13 are connected to the pump body 10 through a spray pipe and a drain pipe respectively. The spray pipe and the drain pipe are perpendicular to the axial direction of the pump body 10. The height of the spray pipe is greater than the overflow height of the water flow during drainage, and the height of the drain pipe is greater than the overflow height of the water flow during spraying. Since the motor drives the impeller 40 to drain water when it is reversed, although the direction of the water flow is opposite to the setting direction of the spray pipe, it is inevitable that water will enter the spray pipe. However, the height of the spray pipe is greater than the overflow height of the water flow during drainage. Therefore, after the water flows in, there is not enough flow rate from the spray pipe to the spray port 12, ensuring that the spray operation is not performed during drainage. The height of the drain pipe is greater than the overflow height of the water flow during spraying. For the same reason, it can effectively prevent the drainage operation during spraying.

[0031] like Figure 3 As shown, in a preferred embodiment, the spray pipe and the drainage pipe are arranged in parallel, and respectively include an arc pipe 121 and a straight pipe 122 that turn 90 degrees, and the water inlet of the arc pipe 121 is consistent with the tangent direction of the pump body 10. In this embodiment, the spray pipe is provided with an arc pipe 121, which can discharge the water under the force of the centrifugal direction, reduce the turbulence or splashing of the water body, and thus reduce power loss. The drainage pipe can also be set to the same structure as the spray pipe, but in order to adapt to the different directions of the motor, its flow direction is opposite to that of the spray pipe.

[0032] like Figure 2 As shown, in a preferred embodiment, both ends of the filter frame 20 are fixedly connected with the inner wall of the pump body 10, a screw plug is provided at the front end of the pump body 10, and a motor is provided at the rear end. The front end of the filter frame 20 abuts against the screw plug, and the rear end abuts against the boss of the inner wall of the pump body 10. In this embodiment, the filter frame 20 is positioned by squeezing the screw plug to prevent shaking and instability under the pressure of the water body, which affects the filtering effect.

[0033] like Figure 4 As shown, further, both sides of the filter frame 20 are provided with protrusions, and the pump body 10 is provided with a slot 14 adapted to the protrusions. The slot 14 of the pump body 10 includes a straight slot, and one side of the straight slot is provided with a flared slot extending to the front end of the pump body 10. The filter frame 20 enters the pump body 10 from the front end of the pump body 10 until the protrusion is inserted into the straight slot. In this embodiment, in addition to the positioning with the pump body 10 and the screw plug, a slot 14 is also provided, and the pump body 10 and the protrusion enter the straight slot of the slot 14, which is convenient for installation and prevents the filter frame 20 from rotating, further improving the stabilization effect.

[0034] like Figure 5 As shown, in a preferred embodiment, a water outlet chamber 100 is provided at the rear side of the pump body 10, the impeller 40 extends into the water outlet chamber 100, and the spray port 12 and the drain port 13 are respectively communicated with the water outlet chamber 100. In this embodiment, the water after passing through the filter frame 20 enters the water outlet chamber 100, where it forms a regular flow under the action of the impeller 40, and then flows out from the spray port 12 or the drain port 13.

[0035] Furthermore, the inner wall of the water outlet cavity is provided with a first arc block 15 and a second arc block 16 which are arranged opposite to each other, the center of the first arc block 15 is the center of the pump body 10, the inner diameter of the second arc block 16 is larger than the first arc block 15, the spray port 12 and the drain port 13 are symmetrically arranged, and the two ends of the second arc block 16 extend into the pipes of the spray port 12 and the drain port 13 respectively. The first arc block 15 and the second arc block 16 and the impeller 40 work together to form a regular flow of water that rotates counterclockwise or clockwise in the water outlet cavity. The second arc block 16 is used to smoothly transition with the pipes of the spray port 12 and the drain port 13 to facilitate the discharge of the water.

[0036] In a preferred embodiment, the rear edge of the pump body 10 is provided with evenly spaced grooves 17 and protruding teeth 18, and a stopper 19 is also provided on the pump body 10. The motor is arranged in a housing 30, and the open end of the housing 30 is provided with a plurality of engaging grooves 34 and inwardly bent engaging teeth 35, each engaging tooth 35 first enters the groove 17, and by rotating the housing 30, the engaging teeth 35 are engaged with the protruding teeth 18, and the stopper 19 enters one of the engaging grooves 34. In this embodiment, the engaging teeth are used for mutual engagement, and the stopper 19 is used for positioning to prevent the housing 30 and the pump body 10 from being loosened.

[0037] In a preferred embodiment, a stator assembly 32 and a rotor assembly 33 are provided inside the motor. The coil of the rotor assembly 33 is provided with two poles, and two power terminals are connected to the two poles one by one. The two poles of the rotor assembly 33 generate a magnetic field with the stator when rotating. Different poles have different rotation directions, thereby driving the impeller 40 to rotate in both positive and negative directions. Figure 5 As shown, when the impeller 40 rotates clockwise, water flows out of the spray port 12 ; when the impeller 40 rotates counterclockwise, water flows out of the drain port 13 .

[0038] The present invention provides a spray port for circulating water and a drain port for discharging water in the washing machine on the pump body. The impeller is driven to rotate by a motor, and the rotation direction can be adjusted to control the discharge of water from the spray port or the drain port. The water output can also be adjusted by adjusting the motor speed. Therefore, the spraying and drainage of the washing machine are realized by using one motor and one water pump. The structure is simple and compact, and the drainage volume can be adjusted at the same time, thereby effectively improving the performance of spraying and drainage.

[0039] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention.

Claims

1. A double-outlet water pump for a washing machine, comprising a pump body, wherein the pump body is provided with a water inlet, characterized in that: The pump body is provided with: A filter frame is detachably placed in the pump body, and the water inlet is aligned with the water inlet end of the filter frame; An impeller is arranged at the rear end of the pump body, and the impeller is driven by a motor. A power block is arranged on the outer side of the motor, and each power block is provided with two power terminals. When one of the power terminals is energized, the motor realizes forward or reverse rotation; The water outlet includes a spray port for circulating water and a drain port for discharging water in the washing machine, the spray port and the drain port are both oriented above or below the pump body, and are respectively disposed on both sides of the water outlet end of the filter frame, and the impeller is driven by the motor to rotate forward or reverse, driving water to flow out from the spray port or the drain port; The spray port and the drain port are connected to the pump body through a spray pipe and a drain pipe respectively. The spray pipe and the drain pipe are both perpendicular to the axial direction of the pump body. The height of the spray pipe is greater than the overflow height of the water flow during drainage, and the height of the drain pipe is greater than the overflow height of the water flow during spraying.

2. The double-outlet water pump for a washing machine according to claim 1, characterized in that: The spray pipe and the drainage pipe are arranged in parallel, and respectively include an arc pipe and a straight pipe turned 90 degrees, and the water inlet of the arc pipe is consistent with the tangent direction of the pump body.

3. The double-outlet water pump for a washing machine according to claim 1, characterized in that: The two ends of the filter frame are fixedly connected with the inner wall of the pump body, the front end of the pump body is provided with a screw plug, the front end of the filter frame abuts against the screw plug, and the rear end abuts against the boss on the inner wall of the pump body.

4. The double-outlet water pump for a washing machine according to claim 3, characterized in that , protrusions are provided on both sides of the filter frame, and a slot adapted to the protrusion is provided inside the pump body, the slot includes a straight slot, and one side of the straight slot is provided with a flared slot extending to the front end of the pump body, and the filter frame enters the pump body from the front end of the pump body until the protrusion is inserted into the straight slot.

5. The double-outlet water pump for a washing machine according to claim 1, characterized in that: A water outlet cavity is arranged at the rear side of the pump body, the impeller extends into the water outlet cavity, and the spray port and the drain port are respectively communicated with the water outlet cavity.

6. The double-outlet water pump for a washing machine according to claim 5, characterized in that: The inner wall of the water outlet chamber is provided with a first arc block and a second arc block which are arranged opposite to each other, the center of the first arc block is the center of the pump body, the inner diameter of the second arc block is larger than the first arc block, the spray port and the drain port are symmetrically arranged, and the two ends of the second arc block extend into the pipes of the spray port and the drain port respectively.

7. The double-outlet water pump for a washing machine according to claim 1, characterized in that: The rear side edge of the pump body is provided with a plurality of evenly spaced grooves and protruding teeth and a limit block. The motor is arranged in a shell. The open end of the shell is provided with a plurality of engaging grooves and inwardly bent engaging teeth. Each engaging tooth first enters the groove. By rotating the shell, the engaging teeth engage with the protruding teeth, and the limit block enters one of the engaging grooves.

8. The double-outlet water pump for a washing machine according to claim 1, characterized in that: A stator assembly and a rotor assembly are arranged on the inner side of the motor. Two poles are arranged on the coil of the rotor assembly. The two power terminals are respectively connected to the two poles in a one-to-one correspondence.

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