CN216129837U - Washing machine drainage component and washing machine - Google Patents

Abstract

The utility model discloses a washing machine drainage assembly and a washing machine, wherein the drainage assembly comprises: a drain line; a first drainage pump; a second drain pump; a water flow detecting part; the drainage pipeline is provided with a first drainage pipe connected between the washing drum and a first drainage pump and a second drainage pipe connected between the first drainage pump and a second drainage pump, the first drainage pump is a centrifugal pump, and the second drainage pump is an axial flow pump; the advantages of a centrifugal pump and an axial flow pump can be fully utilized, and the drainage efficiency is favorably ensured; the washing water contains more foams, the drainage speed of the first drainage pump is lower, and negative pressure is generated in the drainage pipeline through the second drainage pump, so that the washing water, the foams and the like are discharged together. The amount of washing water is small at the later stage of drainage, and when the pump cavity of the first drainage pump cannot be filled with the washing water, the residual washing water is drained through the residual washing water of the second drainage pump, so that the residual washing water is reduced, and the noise is avoided by closing the first drainage pump.

Description

Washing machine drainage component and washing machine

Technical Field

The utility model belongs to the technical field of washing machines, and particularly relates to a washing machine drainage assembly and a washing machine with the same.

Background

Generally, a washing machine is an apparatus for washing laundry by repeatedly performing washing and rinsing operations. The washing machine includes a cabinet defining an external appearance of the washing machine, an outer tub mounted in the cabinet for containing washing water, and an inner tub rotatably mounted in the outer tub. When the drum rotates, the laundry placed in the drum may be washed. The washing machine is divided into an upper drainage mode and a lower drainage mode according to different drainage modes, wherein the upper drainage washing machine utilizes a drainage pump to drain water in an outer cylinder out of the machine. The washing machine drain assembly includes a drain pump and a drain pipe.

The existing upper-drainage washing machine has the siphon problem, and the siphon phenomenon can occur when a drainage outlet is too low due to improper placement of a drainage pipe of a user; when the control program has defects, the rinsing water inflow is started too early when the water drainage is not finished and water flow still exists in the water drainage pipe, so that the water inflow and siphon water drainage are caused, the normal use of the washing machine is influenced, and the waste of water and complaints of users are caused.

The existing drainage pump has the problems of high noise and waste water residue in the centrifugal pump, generates a large amount of foam when a detergent is put too much, causes that the foam mixed in water can reduce centrifugal force, causes that water cannot be discharged, causes drainage alarm, and has larger drainage noise. At the later stage of the drainage process, the water amount in the drainage pump is reduced, air is sucked into the drainage pump, the air and the water are mixed and discharged, at the moment, the noise caused by drainage is obviously increased, and finally, part of water remains in the drainage assembly; residual water in the drainage assembly can deteriorate after a long time, generate peculiar smell and breed bacteria, further pollute the environment, breed germs and bad smell, and influence the health of a user and the clothes washing experience; and contaminates the washing water of the next washing.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model provides a drainage component of a washing machine aiming at the problems in the prior art, which increases the capability of discharging foam, reduces noise, reduces the residue of washing water and avoids siphonage.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a washing machine drain assembly comprising:

a drain line communicating with a washing tub of the washing machine;

the first drainage pump is arranged on the drainage pipeline;

a second drain pump provided on the drain line;

a water flow detecting part for detecting water flow in the drain line;

the drainage pipeline is provided with a first drainage pipe connected between the washing drum and the first drainage pump, and a second drainage pipe connected between the first drainage pump and the second drainage pump, the first drainage pump is a centrifugal pump, and the second drainage pump is an axial flow pump.

Further, the opening and closing of the second drain pump is controlled according to the detection condition of the detection part.

Further, the drain line has a third drain pipe for draining the washing water flowing through the second drain pump out of the washing machine.

Further, the water flow detecting part is provided on the second drain pump.

Further, the second drain pipe is vertically arranged, and the second drain pump is connected with the upper end of the second drain pipe.

Furthermore, the second drain pipe is provided with a vertical section and a first bending section bent along the upper end of the vertical section, and the first bending section is connected with the second drainage pump.

Further, the washing machine is provided with a water level detection part for detecting the water level of the washing drum.

Furthermore, the second drainage pump is provided with a pump shell and an impeller which is rotatably positioned in the pump shell, and the pump shell is provided with a water inlet and a water outlet which are coaxially arranged.

Further, the second drain pump further includes a motor for driving the impeller to rotate, and an output shaft of the motor is perpendicular to a rotation shaft of the impeller.

Furthermore, a conical gear set is arranged between the rotating shaft of the impeller and the output shaft of the motor.

Based on the drainage assembly of the washing machine, the utility model also provides the washing machine with the drainage assembly, which increases the capability of discharging foam, reduces noise, reduces the residue of washing water and avoids siphonage.

A washing machine is provided with a washing drum for containing washing water and the drainage assembly.

Compared with the prior art, the utility model has the advantages and positive effects that: the first drainage pump is a centrifugal pump, the second drainage pump is an axial flow pump, the advantages of the centrifugal pump and the axial flow pump can be fully utilized, the drainage efficiency is favorably ensured, the foam discharge capacity is improved, the noise is reduced, the residual of washing water is reduced, and siphonage is avoided; the washing water contains more foams, the drainage speed of the first drainage pump is lower, and negative pressure is generated in the drainage pipeline through the second drainage pump, so that the washing water, the foams and the like are discharged together; and by turning off the first drain pump, noise is avoided. The amount of washing water is small at the later stage of drainage, and when the pump cavity of the first drainage pump cannot be filled with the washing water, the residual washing water is drained through the residual washing water of the second drainage pump, so that the residual washing water is reduced, and the noise is avoided by closing the first drainage pump. After the water flow detection part detects water flow, the second drainage pump is closed, water starts to enter again, and the siphonage phenomenon cannot occur.

Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a first embodiment of a drain assembly of a washing machine according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1;

FIG. 3 is a schematic view of a second sump pump;

FIG. 4 is a schematic view of the second sump pump of FIG. 3;

FIG. 5 is a schematic structural view of a first embodiment of a drain assembly of a washing machine according to the present invention;

fig. 6 is a schematic structural diagram of fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings. The terminology is for the purpose of describing the utility model only and is for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated, and is not to be considered limiting of the utility model. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example one

Referring to fig. 1, which is a first embodiment of a drain assembly of a washing machine according to the present invention, the washing machine has a cabinet 200, a washing tub 300 disposed in the cabinet 200, and an upper drain washing machine; the drainage assembly comprises: a drain pipeline 10, a first drain pump 20, a second drain pump 30, a water flow detection component 40, wherein the drain pipeline 10 is communicated with a washing drum 300 of the washing machine and is used for draining the washing water in the washing drum 300; the first drain pump 20 and the second drain pump 30 are provided on the drain line 10, and the water flow detecting part 40 detects the flow of water in the drain line 10. the drain line 10 has a first drain pipe 11 connected between the washing tub 300 and the first drain pump 20, and a second drain pipe 12 connected between the first drain pump 20 and the second drain pump 30. The drain line 10 has a centrifugal pump as the first drain pump 20 and an axial pump as the second drain pump 30.

In this embodiment, the first drain pump 20 is a centrifugal pump, and the second drain pump 30 is an axial-flow pump, can make full use of the advantages of centrifugal pump and axial-flow pump, and the main drainage utilizes the first drain pump 20, is favorable to guaranteeing drainage efficiency, increases the ability of discharge foam, and the noise reduction reduces the residual of washing water, avoids appearing the siphon. The washing water contains more foam, the drainage speed of the first drainage pump 20 is slower, and negative pressure is generated in the drainage pipeline through the second drainage pump 30, so that the washing water, the foam and the like are discharged together; and noise is prevented by turning off the first drain pump 20. When the amount of the washing water is small at the later stage of the draining and the washing water cannot fill the pump cavity of the first drain pump 20, the remaining washing water is drained by the second drain pump 30, the residue of the washing water is reduced, and the noise is prevented by turning off the first drain pump 20. After the water flow detecting unit 40 detects the water flow, the second drain pump 20 is turned off and water starts to be supplied again, so that the siphon phenomenon does not occur.

The drain line 10 has a third drain pipe 13 for draining the washing water flowing through the second drain pump 30 out of the washing machine; the washing water in the washing tub 300 is discharged to sequentially flow through: a first drain pipe 11, a first drain pump 20, a second drain pipe 12, a second drain pump 30, and a third drain pipe 13.

The washing machine is top-draining, that is, the drain pipeline 10 has a portion extending upward, the second drain pipe 12 is vertically arranged, and the second drain pump 30 is connected to the upper end of the second drain pipe 12, that is, the water flow in the second drain pipe 12 flows from bottom to top; the water reaching the second water discharge pipe 12 is discharged by the connection of the second water discharge pump 30 with the upper end of the second water discharge pipe 12, and the third water discharge pipe 13 has a horizontal extension section, a second bending section bent downward along the water inlet end of the horizontal extension section and connected with the second water discharge pump 30.

The second drainage pump 30 is provided with a pump shell 31 and an impeller 32 which is rotatably positioned in the pump shell 31, the pump shell 31 is provided with a water inlet 33 and a water outlet 34, and the water inlet 33 and the water outlet 34 are coaxially arranged, so that the water flow entering and passing through the second drainage pump 30 is direct flow, the loss of water flow energy is avoided, and the drainage capacity of the second drainage pump 30 is ensured. The second drain pump 30 further has a motor 35 for driving the impeller 32 to rotate, and an output shaft 351 of the motor 35 is disposed perpendicular to the rotating shaft 321 of the impeller 32, so that the motor 35 can be disposed in the pump housing 31 in a vertical direction of the water flow, ensuring that the water flow is direct current in the water flow entering and passing through the second drain pump 30. A bevel gear set 36 is provided between the rotary shaft 321 of the impeller 32 and the output shaft 351 of the motor 35, and transmission of the driving force is realized.

In this embodiment, the water flow detecting part 40 is provided on the second drain pump 30, and the water flow detecting part 40 may be selected to have a structure for detecting whether or not there is water flow, and the washing machine is provided with a water level detecting part for detecting the water level of the washing tub 300.

The first control method of the drainage of the washing machine is explained as follows, comprising the following steps:

s10, the washing machine enters a dehydration stage, and the first drainage pump 20 is started;

s20, detecting water flow through the water flow detection part 40, namely detecting the water flow flowing through the second drainage pump 30, if so, starting the second drainage pump 30, otherwise, giving a fault alarm;

s30, when the water level is reduced to the water level of the empty barrel, controlling the first drainage pump 20 to work for 10 seconds in a delayed mode and then to be closed; the second drain pump 30 continues to operate;

s40, when the water flow detection part 40 detects that no water flow passes through the second drainage pump 30, closing the second drainage pump 30;

and S50, judging whether water enters the next stage according to program requirements.

There is also S09 between the step S10 the water level inside the washing tub is detected by the water level detecting part, and when the water level is higher than the empty tub water level, the process proceeds to the step S10.

S11. monitoring the water level change in the washing drum 300 according to the feedback of the water level detection part before the step S10; when the change rate is equal to or greater than the set value, it is indicated as normal drainage, i.e., the concentration of detergent in the water is not high or the drain port is not high, the first drain pump 20 can smoothly drain the water. The second drain pump 30 may not be turned on at this time.

The second control method of the drainage of the washing machine is explained as follows, comprising the following steps:

s09, detecting the water level in the washing barrel through the water level detection part, and when the water level is higher than the water level of the empty barrel, entering the step S10;

s10, the washing machine enters a dehydration stage, and the first drainage pump 20 is started;

s11, monitoring the water level change in the washing drum 300 according to the feedback of the water level detection part; when the change rate is equal to or greater than the set value, it is indicated as normal drainage, i.e., the concentration of detergent in the water is not high or the drain port is not high, the first drain pump 20 can smoothly drain the water. The second drain pump 30 may not be turned on at this time;

s20, when the water level is reduced to the water level of the empty barrel, a second drainage pump 30 is started; controlling the first drainage pump 20 to work for 10 seconds in a delayed mode and then to be closed;

s30, when the water flow detecting part 40 detects that no water flows through the second drain pump 30, the second drain pump 30 is turned off.

Example two

Referring to fig. 1, a second embodiment of the drainage assembly of the washing machine according to the present invention is mainly different from the first embodiment in the arrangement position of the first drainage pump 20, and other configurations may be the same as the first embodiment.

The washing machine comprises a box body 200 and a washing drum 300 arranged in the box body 200, and is an upper-drainage washing machine; the drainage assembly comprises: a drain pipeline 10, a first drain pump 20, a second drain pump 30, a water flow detection component 40, wherein the drain pipeline 10 is communicated with a washing drum 300 of the washing machine and is used for draining the washing water in the washing drum 300; the first drain pump 20 and the second drain pump 30 are provided on the drain line 10, and the water flow detecting part 40 detects the flow of water in the drain line 10. the drain line 10 has a first drain pipe 11 connected between the washing tub 300 and the first drain pump 20, and a second drain pipe 12 connected between the first drain pump 20 and the second drain pump 30. The drain line 10 has a centrifugal pump as the first drain pump 20 and an axial pump as the second drain pump 30.

In this embodiment, the first drainage pump 20 is a centrifugal pump, and the second drainage pump 30 is an axial flow pump, so that the advantages of the centrifugal pump and the axial flow pump can be fully utilized, and the main drainage utilizes the first drainage pump 20, which is beneficial to ensuring the drainage efficiency; the washing water contains more foam, the drainage speed of the first drainage pump 20 is slower, and negative pressure is generated in the drainage pipeline through the second drainage pump 30, so that the washing water, the foam and the like are discharged together; and noise is prevented by turning off the first drain pump 20. When the amount of the washing water is small at the later stage of the draining and the washing water cannot fill the pump cavity of the first drain pump 20, the remaining washing water is drained by the second drain pump 30, the residue of the washing water is reduced, and the noise is prevented by turning off the first drain pump 20. After the water flow detecting unit 40 detects the water flow, the second drain pump 20 is turned off and water starts to be supplied again, so that the siphon phenomenon does not occur.

The drain line 10 has a third drain pipe 13 for draining the washing water flowing through the second drain pump 30 out of the washing machine; the washing water in the washing tub 300 is discharged to sequentially flow through: a first drain pipe 11, a first drain pump 20, a second drain pipe 12, a second drain pump 30, and a third drain pipe 13.

The washing machine is an upper drain, that is, the drain line 10 has an upward extending portion, the second drain pipe 12 has a vertical section 121 and a first bent section 122 bent along an upper end of the vertical section 121, and the first bent section 122 is connected to the second drain pump 30. The second drain pipe 12 is disposed near the bent portion of the upper end of the drain pipeline 10, so that the washing water retained by the vertical section 121 can be pumped out, and the residue can be reduced.

The second drainage pump 30 is provided with a pump shell 31 and an impeller 32 which is rotatably positioned in the pump shell 31, the pump shell 31 is provided with a water inlet 33 and a water outlet 34, and the water inlet 33 and the water outlet 34 are coaxially arranged, so that the water flow entering and passing through the second drainage pump 30 is direct flow, the loss of water flow energy is avoided, and the drainage capacity of the second drainage pump 30 is ensured. The second drain pump 30 further has a motor 35 for driving the impeller 32 to rotate, and an output shaft 351 of the motor 35 is disposed perpendicular to the rotating shaft 321 of the impeller 32, so that the motor 35 can be disposed in the pump housing 31 in a vertical direction of the water flow, ensuring that the water flow is direct current in the water flow entering and passing through the second drain pump 30. A bevel gear set 36 is provided between the rotary shaft 321 of the impeller 32 and the output shaft 351 of the motor 35, and transmission of the driving force is realized.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A washing machine drain assembly, comprising:

a drain line communicating with a washing tub of the washing machine;

the first drainage pump is arranged on the drainage pipeline;

a second drain pump provided on the drain line;

a water flow detecting part for detecting water flow in the drain line;

the drainage pipeline is provided with a first drainage pipe connected between the washing drum and the first drainage pump, and a second drainage pipe connected between the first drainage pump and the second drainage pump, the first drainage pump is a centrifugal pump, and the second drainage pump is an axial flow pump.

2. The drain assembly of claim 1, wherein the drain line has a third drain pipe for draining wash water flowing through the second drain pump out of the washing machine.

3. The drain assembly of claim 1, wherein the water flow detection feature is provided on the second drain pump.

4. The drain assembly of claim 1, wherein the second drain pipe is vertically disposed, and the second drain pump is connected to an upper end of the second drain pipe.

5. The drain assembly of claim 1, wherein the second drain pipe has a vertical section and a first bent section bent along an upper end of the vertical section, the first bent section being connected to the second drain pump.

6. The drain assembly of claim 1, wherein the opening and closing of the second drain pump is controlled based on the detection of the detection member.

7. The drain assembly of any of claims 1 to 6, wherein the second drain pump has a pump housing, an impeller rotatably positioned within the pump housing, and a water inlet and a water outlet coaxially positioned on the pump housing.

8. The drain assembly of claim 7, wherein the second drain pump further comprises a motor for driving the impeller to rotate, an output shaft of the motor being disposed perpendicular to a rotational axis of the impeller.

9. The drain assembly of claim 8, wherein a conical gear set is disposed between the rotational axis of the impeller and the output shaft of the motor.

10. A washing machine having a washing tub for containing washing water, characterized by further having the drain assembly of any one of claims 1 to 9.

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