JP2021534343A - The pump device and the cleaning device in which the pump device is located - Google Patents

Abstract

The present invention belongs to the technical field of a pump device, and an object of the present invention is to solve the problem that the pump device of a conventional washing machine has a single function and the amount of drainage is small. Therefore, in the present invention, the pump chamber is formed, the pump main body is provided with the water inlet, the first drain port and the second drain port communicating with the pump chamber, and the impeller installed in the pump chamber and includes a plurality of blades. And a drive member connected to the impeller to drive the impeller to rotate forward and reverse, the blade drains from the first drain at first pressure as the impeller rotates along the first direction. A pump device and the pump device configured so that when the impeller rotates along the second direction, the second pressure can drain from the second drain port and the first pressure is greater than the second pressure are arranged. Provide cleaning equipment. The pumping device of the present invention realizes drainage of different pressures with a single motor drive by installing the blades of the impeller at an angle, increases pumping function, saves hardware cost, and enhances the user experience. ..

Description

The present invention relates to the technical field of a pump device, and specifically to a pump device and a cleaning device in which the pump device is arranged.

There are two types of drainage methods for washing machines. One is to raise the height of wastewater with a drainage pump so that the drainage process is not restricted to the position of the floor drain in the room. At present, most of the drum type washing machines adopt the upper drainage method, which makes it easy to install the washing machine, and for this reason, a drainage pump dedicated to drainage is installed inside the washing machine.

In order to improve the degree of washing of the laundry, a water circulation system configured to periodically pump out the washing water in the washing machine water receiving tub and spray it onto the laundry is often installed. In many cases, a dedicated circulation pump is installed in the machine to realize water circulation.

Both the drainage pump and the circulation pump are driven by a single motor, and one pump can realize only a single drainage function or water circulation function, so that the washing machine can realize drainage and water circulation functions at the same time. In addition, it is necessary to place two types of pumps at the same time, thereby occupying a limited space in the washing machine to place the two types of pumps and the piping connected to them, thereby the compact design of the washing machine. Not useful for. In addition, the drainage pump and the circulation pump in the prior art have low hydraulic performance and a low pumping stroke, so that the drainage process takes a long time.

Accordingly, this field requires new pumping equipment to solve the above problems.

In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the pump device of the conventional washing machine has a single function and the amount of drainage is small, the first aspect of the present invention is to form a pump chamber. The pump body is provided with a water inlet, a first drain port and a second drain port communicating with the pump chamber, an impeller installed in the pump chamber and including a plurality of blades, and the impeller connected to the impeller. The blade includes a drive member for driving the impeller to rotate forward and reverse, and the blade can be drained from the first drain port at a first pressure when the impeller rotates along a first direction, and the impeller. Provided is a pump device configured to be able to drain from the second drainage port at a second pressure when the is rotated along a second direction and the first pressure is greater than the second pressure.

In a preferred technical solution of the pump device, the impeller further comprises a wheel disc, the plurality of blades are installed on one side of the wheel disc, and the blades are the first with respect to the disc surface of the wheel disc. It slopes and extends along one direction.

In the preferred technical solution of the pump device, the blade extends radially in the wheel disc.

In the preferred technical solution of the pump device, the wheel disc is drilled with a plurality of balance holes and / or additional reinforcing ribs are installed on the opposite side of the blade on the wheel disc.

In the preferred technical solution of the pump device, the axis of the first drain port and the axis of the second drain port are installed on the same plane.

In the preferred technical solution of the pump device, the axis of the first drain is perpendicular to the axis of the second drain.

In a preferred technical solution of the pump device, for guiding the pump chamber between the first drain port and the second drain port to drain water from the first drain port or the second drain port. Further guide members are installed.

In a preferred technical solution of the pump device, the pump device further comprises a connecting member for connecting the drive member and the pump body, and / or the pump body further comprises a pump base and a pump plug. Be connected.

In a preferred technical solution of the pump device, the pump body is further provided with a residual water port communicating with the pump chamber.

Those skilled in the art will appreciate that in the preferred technical solution of the present invention, the blades of the impeller are tilted and installed to allow the pumping device to drain from two drains at different water pressures with a single motor drive. Not only does it increase pumping function and realize drainage and water circulation functions at the same time, but it also realizes double-ended drainage with only a single motor, saving hardware cost and enhancing the user experience.

A second aspect of the present invention further provides a cleaning device in which the pump device according to the technical solution according to any one of the above is arranged.

It is understandable that the cleaning device in the present invention has all the technical effects of the pump device, and the description thereof is omitted here.

It is a structural schematic diagram of the drum type washing machine of this invention which shows the case where a pump device is connected to each pipe. It is a structural schematic diagram of the pump device of this invention. It is a front schematic diagram of FIG. It is sectional drawing in the AA direction of FIG. It is a structural schematic diagram after removing the pump main body of the pump device of this invention. FIG. 5 is a schematic side view of FIG. It is a front schematic diagram of FIG. It is a schematic diagram of the wheel structure of this invention. FIG. 8 is a schematic side view of FIG. It is sectional drawing in the BB direction of FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Those skilled in the art will appreciate that these embodiments are used only to illustrate the technical principles of the invention and not to limit the scope of protection of the invention. For example, the following embodiments have been described in the context of a drum-type washing machine, but this is not limited, and the technical solution of the present invention is a pulsator-type washing machine, a dishwasher, a washer-dryer, or the like. It is similarly applied to other washing machines, and these changes in application do not deviate from the principles and scope of the present invention.

Further, in order to better illustrate the invention, many specific details are given in the following specific embodiments. Those skilled in the art will understand that the present invention can be carried out in the same manner unless there are certain specific details. In some examples, the operation of the inner and outer drums in a drum-type washing machine known to those skilled in the art, the shock absorbing mechanism of the washing machine, and the like are not described in detail in order to clarify the gist of the present invention.

Based on the problem that the pump device of the existing washing machine has a single function and the amount of drainage is small, which is pointed out in the background technology, the present invention presents a pump placed in the washing machine by increasing the function of the pump device. Provided is a pump device for which the purpose is to reduce the quantity of the pump device and shorten the drainage time of the pump device.

1 to 10 are referred to, FIG. 1 is a schematic configuration diagram of a drum-type washing machine of the present invention showing a case where a pump device is connected to each pipe, and FIG. 2 is a schematic configuration diagram of the pump device of the present invention. 3 is a schematic front view of FIG. 2, FIG. 4 is a schematic cross-sectional view of FIG. 3 in the direction of AA, and FIG. 5 is a schematic configuration of the pump device of the present invention after the pump body is removed. 6A and 6B are schematic side views of FIG. 5, FIG. 7 is a schematic front view of FIG. 5, FIG. 8 is a schematic view of the wheel configuration of the present invention, and FIG. 9 is a schematic side view of FIG. FIG. 10 is a schematic cross-sectional view of FIG. 2 in the BB direction.

Referring to FIG. 1, the drum-type washing machine 1 includes a housing, an outer drum 15 is installed in the housing, an inner drum is rotatably installed inside the outer drum 15, and above the outer drum 15 and the housing. A suspension spring 13 for realizing shock absorption of the inner and outer drums 15 is installed in the space between them. An observation window 19 for observing the internal environment of the inner drum is installed on the front panel of the washing machine 1. Around the observation window 19, a plurality of nozzles are installed on the inner circumference, and an annular cavity that communicates with the circulation pipe 16 of the washing machine 1 is installed, whereby the washing water transported from the circulation pipe 16 is introduced into the inner drum by the nozzles. Can be sprayed on the laundry.

A detergent case 12 for putting detergent is installed in the upper left corner of the washing machine 1, a control panel 11 is installed in the upper right corner, and the user controls the washing machine 1 by inputting a control command to the control panel 11 to control a different program. And by observing the information displayed on the control panel 11, the real-time process of the washing machine 1 is understood. A water supply / drainage system and a circulation system are installed in the washing machine 1, and water can be injected into the inner drum from the tap water inlet pipe 14 located above the water supply / drainage system, and the washing water is connected to the drain port at the bottom of the outer drum 15. The water pipe 18 can enter the pump chamber 214 of the pump device 2, and the pump device 2 communicates with the drain pipe 17, the circulation pipe 16, and the water inlet pipe 18 at the same time. The height of the drainage pipe 17 is H, the height of the circulation pipe 16 is H1, and H> H1, so that the drainage pressure required for the drainage pipe 17 is higher than the circulation pressure of the circulation pipe 16.

Specifically, referring to FIG. 2, in the pump device 2 of the present invention, a pump chamber 214 is formed, and a water inlet 211 communicating with the pump chamber 214 and connected to the water inlet pipe 18 and a drain pipe are formed on the pump chamber 214. It includes a pump main body 21 in which a first outlet 212 connected to 17 and a second outlet 213 connected to a circulation pipe 16 are installed.

With reference to FIGS. 3 and 4, the pump device 2 further includes an impeller 26 installed in the pump chamber 214, specifically in the drain chamber in the pump body 21.

With reference to FIG. 8, the impeller 26 includes a wheel disc 261 and a plurality of blades 263, with four blades 263 in this embodiment. A plurality of blades 263 are installed on one side of the wheel disc 261.

With reference to FIGS. 2 and 5, the pump device 2 is connected to the impeller 26 and further includes a driving member for driving the impeller 26 to rotate forward and backward. The driving member in this embodiment is a motor 22 fixedly connected to the pump main body 21 via a connecting member, and the connecting member in this embodiment is a motor base 23.

The blade 263 can drain from the first drainage port 212 at the first pressure when the impeller 26 rotates along the first direction, and the second drainage at the second pressure when the impeller 26 rotates along the second direction. It can be drained from the mouth 213, and the first pressure is configured to be larger than the second pressure.

Specifically, referring to FIGS. 7 and 8, if the direction in which the impeller 26 rotates clockwise is the first direction and the direction in which the impeller 26 rotates counterclockwise is the second direction, the blade 263 , A wheel disc on the lower edge of the blade 263 located on the surface of the wheel disc 261 while extending clockwise and diagonally upward along the disc surface of the wheel disc 261, i.e., with the blade 263 stationary. The projection position on the disk surface of 261 is located rearward in the first direction from the projection position on the disk surface of the wheel disk 261 at the upper end edge of the blade 263.

The principle will be described in relation to FIGS. 2, 7, and 10. With reference to FIG. 10, when the impeller 26 rotates in the normal direction, that is, when the impeller rotates clockwise, the washing water that has entered the pump chamber 214 from the water inlet 211 is first perpendicular to the disk surface of the wheel disk 261. Colliding with the impeller 26 along the direction, the impeller 26 rotated clockwise, the upper edge of the blade 263 cut the water flow along the first direction, and the body of water was formed between the four blades 263. The three runners located in the lower left, lower right, and upper right communicate with the first exit 212 in sequence as the impeller 26 rotates, and the water body blocked by these three runners is the first exit. A part of the water body that is sequentially discharged via 212 and blocked by the runner on the upper left enters the second drain port 213. The inner diameter of the first drainage port 212 is much larger than the inner diameter of the second drainage port 213. For example, the inner diameter of the first drainage port 212 is two to three times the inner diameter of the second drainage port 213. The impeller 26 constantly rotates, the body of water is constantly discharged, negative pressure is generated in the runner, the entry of water is further accelerated, the amount of water entry increases, and the amount of drainage and the drainage pressure increase. In the drainage process, most of the water body is discharged from the first drainage port 212, so that the amount of water entering the second drainage port 213 is extremely small, and the amount of drainage is doubled due to the tilted installation of the blade, which in turn increases more than three times. Even if a very small amount of water enters the circulation pipe, it is quickly discharged, and the drainage speed is greatly improved compared to the conventional technology.

Continuing with reference to FIG. 10, when the impeller 26 is inverted, that is, when the impeller rotates counterclockwise, the three runners located at the lower left, lower right, and upper right are the second drainage port 213 in the process of rotating the impeller. As the blade 263 tilts, the blocked water body moves along the side wall of the runner of the blade 263, that is, the surface of the blade 263 away from the disk surface of the wheel disk 261, thereby entering water. A certain amount of offset is formed, the amount of water entering the pump device 2 is reduced, and the amount of drainage is further reduced, so that the water pressure and the amount of water output when the impeller 26 rotates counterclockwise both rotate clockwise. It is sometimes lower than the output water pressure and amount.

When the impeller 26 rotates clockwise, the drainage has a high water pressure and a large amount of water, and the water body enters the drain pipe 17 and the circulation pipe 16 at the same time as the impeller 26 rotates, and the pipe diameter of the drain pipe 17 becomes the circulation pipe 16. Since it is much thicker than the pipe diameter of the above, a large amount of water is quickly discharged from the drain pipe 17 to the outside of the machine body in a high water pressure output state, whereby the drainage of the washing machine 1 is accelerated and the drainage efficiency is improved.

When the impeller 26 rotates counterclockwise, the drainage has a low water pressure and a small amount of water, and the water body enters the drain pipe 17 and the circulation pipe 16 at the same time as the impeller 26 rotates, but the water pressure is low and the water body enters the drain pipe 17. Since the required drainage pressure is not reached, the water in the drainage pipe 17 stops rising as soon as it reaches the height corresponding to the circulation pipe 16, so that the water enters the circulation pipe 16 only through the second drainage port. By entering, water circulation is realized.

Up to this point, the pump device 2 provided in the present invention has realized that by improving the shape of the blade 263 of the impeller 26, it is possible to drain water from two drain ports with different water pressures by driving the single motor 22. Increase the function of the water, realize the function of drainage and water circulation at the same time, reduce the cost of hardware, improve the drainage efficiency, shorten the drainage time, and enhance the user experience.

Further, the blade 263 extends in the radial direction of the wheel disc 261. With reference to FIG. 8, since the center axis 262 of the blade 263 coincides with or is close to the radial direction of the wheel disc 261, the impeller 26 can be easily machined and the acting force of the blade 263 on water can be increased. This can improve the hydraulic performance of the pump.

Further, the wheel disc 261 is provided with a plurality of balance holes 265 for balancing the pressures on both sides of the wheel disc 261 and reducing the noise during operation of the impeller 26.

Further, a reinforcing rib 264 for reinforcing the strength of the impeller 26 is installed on the opposite side of the blade 263 on the wheel disc 261.

Threads are installed at the pipe connection portions of the water inlet 211, the first drain port 212, and the second drain port 213 to facilitate connection to each pipe line.

The fact that the axis of the first drain port 212 and the axis of the second drain port 213 are installed on the same plane is useful for smooth drainage.

Further, referring to FIGS. 2 and 3, the axis of the first drainage port 212 is perpendicular to the axis of the second drainage port 213, whereby the circulation connected to the second drainage port 213 when the pump body 21 is attached. The pipe 16 can be connected to the pump main body 21 in the vertical direction, and the first drainage port 212 connected to the drainage pipe 17 is installed along the horizontal direction. It can be connected to the corners, thereby arranging each part in the washing machine 1 compactly, which is useful for compact design and miniaturization of the washing machine 1.

The drainage pump in FIG. 1 is not configured by a method in which the first drainage port is installed horizontally.

Further, in the pump chamber 214 between the first drainage port 212 and the second drainage port 213, a flow guide member 215 for guiding the drainage from the first drainage port 212 or the second drainage port 213 is further installed. To. With reference to FIG. 10, when the impeller 26 rotates clockwise, the left convex portion of the flow guide member 215 blocks the inflow of water to the second drain port 213 and guides the water to drain from the first drain port 212. Then, when the impeller 26 rotates counterclockwise, the convex portion on the right side of the flow guide member 215 blocks the inflow of water to the first drain port 212 and guides the water to drain from the second drain port 213.

Further, the pump device 2 includes a motor base 23 for connecting the motor 22 and the pump main body 21.

Further, the pump base 24 and the pump plug 25 are further connected to the pump main body 21. The pump base 24 may have an integral structure with the pump main body 21, or may be installed in a divided structure, and the pump base 24 and the pump main body 21 in this embodiment have an integral structure.

Further, the residual water port 216 communicating with the pump chamber 214 is further installed in the pump main body 21. By installing the residual water port 216, it is useful to cleanly discharge the residual water remaining in the pump, thereby reducing the corrosion of the residual water to the pump main body 21 and extending the life of the pump device 2.

In this embodiment, the impeller 26 is driven and rotated by a motor 22 capable of forward and reverse rotation, and the motor 22 is connected to the pump body 21 via the motor base 23. The method in which the motor 22 realizes forward / reverse rotation is a method in which the motor is controlled by one relay and connected to a capacitor to realize forward / reverse rotation of the motor 22, or a method in which the electrodes of the motor 22 are controlled by an electronic circuit. The motor 22 can be rotated in the forward and reverse directions, or a three-phase motor and a brushless DC motor can be used to realize the forward and reverse rotation of the motor 22.

A second aspect of the present embodiment further provides a drum washing machine 1 in which the pump device 2 is arranged, which includes all the technical effects of the pump device 2 and the description thereof is omitted here.

So far, the technical solutions of the present invention have been described in relation to the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the scope of protection of the present invention is clearly these specifics. The embodiment is not limited to the above. One of ordinary skill in the art can make equivalent changes or substitutions in the relevant technical features without departing from the principles of the invention, and all technical solutions after these changes or substitutions are within the scope of the invention. to go into.

1: Washing machine, 11: Control panel, 12: Detergent case, 13: Suspension spring, 14: Tap water inlet pipe, 15: Outer drum, 16: Circulation pipe, 17: Drainage pipe, 18: Water inlet pipe, 19: Observation Window 2: Pump device, 21: Pump body, 211: Water inlet, 212: First drain port, 213: Second drain port, 214: Pump room, 215: Flow guide member, 216: Residual water port, 22: Electric machine , 221: Connection terminal, 23: Motor base, 24: Pump base, 25: Pump plug, 26: Impeller, 261: Wheel disk, 262: Center shaft, 263: Blade, 264: Reinforcing rib, 265: Balance hole

Claims (10)

It is a pump device, and the pump device is
A pump chamber is formed, and a pump main body in which a water inlet, a first drainage port, and a second drainage port communicating with the pump chamber are installed,
An impeller installed in the pump chamber and containing multiple blades,
A drive member connected to the impeller and for driving the impeller to rotate it in the forward and reverse directions.
Including
The blade can drain from the first drain at a first pressure when the impeller rotates along a first direction, and the second at a second pressure when the impeller rotates along a second direction. A pump device that can drain water from a drain port and is configured such that the first pressure is larger than the second pressure. The impeller further includes a wheel disc, wherein a plurality of the blades are installed on one side of the wheel disc, and the blades are inclined and extend along the first direction with respect to the disc surface of the wheel disc. The pump device according to claim 1. The pump device according to claim 2, wherein the blade extends in the radial direction of the wheel disc. The pump device according to claim 3, wherein a plurality of balance holes are formed in the wheel disc, and / or a reinforcing rib is further installed on the opposite side of the blade on the wheel disc. The pump device according to claim 1, wherein the axis of the first drainage port and the axis of the second drainage port are installed on the same plane. The pump device according to claim 5, wherein the axis of the first drainage port is perpendicular to the axis of the second drainage port. The pump chamber between the first drainage port and the second drainage port is further provided with a flow guide member for guiding the drainage from the first drainage port or the second drainage port. The pump device according to claim 6. The pump device further includes a connecting member for connecting the drive member and the pump body, and / or the pump base and the pump plug are further connected to the pump body. The pump device described in. The pump device according to any one of claims 1 to 8, wherein a residual water port communicating with the pump chamber is further provided in the pump main body. A cleaning device, wherein the pump device according to any one of claims 1 to 9 is arranged.

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