CN109355866B

CN109355866B - Washing machine

Info

Publication number: CN109355866B
Application number: CN201811375303.6A
Authority: CN
Inventors: 李敬德; 张华成; 徐安沅
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2022-05-13
Anticipated expiration: 2038-11-19
Also published as: CN109355866A

Abstract

The invention discloses a washing machine, which comprises an outer barrel, wherein the outer barrel is provided with air holes for realizing air circulation between the inside and the outside of the outer barrel, and the air holes are provided with defoaming structures for breaking foams overflowing from the outer barrel into liquid and guiding the liquid back to the outer barrel. The defoaming structure is arranged in the air hole, foams overflowing from the outer cylinder are broken into liquid, the liquid is guided back to the outer cylinder, the installation and the maintenance are convenient, and the defoaming structure is convenient to take out and clean when being blocked by flocks and the like.

Description

Washing machine

Technical Field

The invention relates to the field of washing equipment, in particular to a washing machine.

Background

As a laundry device, a washing machine has become an essential electric appliance in daily life.

The existing washing machine, especially the drum washing machine, is generally provided with an air vent communicated with the atmosphere on an outer cylinder, and is also provided with a vent pipe, one end of the vent pipe is communicated with the air vent, and the other end of the vent pipe is communicated to the outer side of the outer cylinder, and the other end of the vent pipe is communicated to a water inlet tank assembly under the general condition. The air pressure inside and outside the drum of the washing machine is balanced through the vent pipe, the sensing efficiency of the water level sensor is improved, the water inlet time can be shortened, meanwhile, the air pressure generated during high-speed dehydration of the drum washing machine is released, and the running stability of the machine is kept. However, in the process of washing clothes by the washing machine, if a user uses excessive high-foam detergent or adds excessive detergent, a large amount of foam is generated in the drum, the excessive foam enters the water inlet tank assembly along the air vent through the air vent pipe or directly overflows out of the washing machine, or the foam flows out of the machine from the machine in the process of spin-drying the machine, so that the use of the user is influenced, and great inconvenience and economic loss are brought to the user.

Chinese patent application No. 201721208932.0 discloses an air-permeable filtering device of a washing machine and a washing machine, wherein the air-permeable filtering device comprises an air-permeable pipeline connecting a washing machine water tank and an outer cylinder for air permeability, and a filtering structure arranged on the air-permeable pipeline for preventing foam from passing through. Through setting up the filtration that is used for ventilative pipeline and is used for preventing that the foam from passing through, both realized the urceolus and external ventilation, realized preventing again that the foam from overflowing through ventilative pipeline. But the setting has increased the manufacturing cost of permeability cell in the permeability cell, and can't take out the maintenance when taking place to block up, has caused very big inconvenience for the user.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

In order to solve the technical problem, the invention provides a washing machine.

In order to realize the purpose, the invention adopts the following technical scheme:

a washing machine comprises an outer barrel, wherein air holes for realizing air circulation between the inside and the outside of the outer barrel are formed in the outer barrel, and defoaming structures for breaking foams overflowing from the outer barrel into liquid and guiding the liquid back to the outer barrel are arranged at the air holes.

Furthermore, one end of the air hole is connected to the inside of the outer cylinder, the other end of the air hole extends upwards to the outside of the outer cylinder to be connected with the vent pipe, the defoaming structure is arranged in the other end connected with the vent pipe,

preferably, the air holes vertically extend upwards to the outside of the outer barrel.

Further, the defoaming structure comprises a first defoaming portion, the first defoaming portion comprises a first body for blocking and extruding foam, the first body is provided with a ventilation through hole,

preferably, a plurality of through holes are distributed on the first body to form a first reticular body,

more preferably, the first mesh body is honeycomb-shaped,

preferably, the through holes are the same in shape and size and are uniformly distributed.

Further, the defoaming structure also comprises a second defoaming part, the second defoaming part comprises a second body for blocking and extruding foam, the second body is provided with a ventilation through hole,

preferably, a plurality of through holes are distributed on the second body to form a second reticular body,

more preferably, the second mesh-like body is honeycomb-shaped,

Furthermore, the defoaming structure also comprises a mounting part for mounting the defoaming structure in the vent hole, the mounting part is respectively connected with the first defoaming part and the second defoaming part, a containing cavity is formed between the first defoaming part and the second defoaming part,

preferably, the installation department is the ring annular structure, the outer wall and the cooperation of bleeder vent inner wall of installation department, first defoaming portion and second defoaming portion all connect the inner wall at the installation department.

Further, the second defoaming part and the mounting part are integrally formed, the first defoaming part and the mounting part are detachably connected,

preferably, the first defoaming portion is clamped with the mounting portion,

preferably, the installation part is internally provided with threads, and the first defoaming part is in threaded connection with the installation part.

Further, the first body is arranged at a position close to the outer cylinder and is arranged in a protruding manner towards the outer cylinder, the second body is arranged at a position far away from the outer cylinder and is arranged in a protruding manner opposite to the first body,

preferably, the first body and the second body are both hemispherical.

Further, the aperture of the through holes of the first body is smaller than that of the through holes of the second body, and the number of the through holes of the first body is larger than that of the through holes of the second body.

Furthermore, a matching part for matching and installing a defoaming structure is arranged in the air hole,

preferably, the matching part is a boss protruding from the inner wall of the vent hole, the defoaming structure is supported on the boss,

more preferably, the mounting part is in sliding fit with the air holes above the lug boss,

preferably, the mounting part/boss is further provided with a non-slip part for preventing the mounting part from slipping off the boss.

Further, the defoaming structure also comprises a taking and placing part which is convenient for taking out/mounting the defoaming structure,

preferably, one end of the taking and placing part is connected with the mounting part, the other end of the taking and placing part extends to the edge higher than the air hole in the direction of the second body,

more preferably, the other end of the taking and placing part is also provided with a grabbing part suitable for being grabbed by hands,

preferably, the pick-and-place part is integrally formed on the mounting part.

Compared with the prior art, the invention has the following beneficial effects:

the defoaming structure is arranged at the vent hole, foams overflowing from the outer cylinder are broken into liquid, the liquid is guided back to the outer cylinder, the mounting and the maintenance are convenient, and the defoaming structure is convenient to take out and clean when being blocked by lint and the like. First defoaming portion, second defoaming portion both can realize breaking the foam into liquid, can guarantee pressure and external intercommunication in the urceolus again.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic side view of the outer tub and water inlet tank assembly of the drum-type washing machine according to the present invention;

FIG. 2 is a schematic structural diagram of the outer tub and the water inlet tank assembly of the drum-type washing machine according to the present invention;

FIG. 3 is a schematic cross-sectional view taken along line B-B of the structure of FIG. 2;

FIG. 4 is an enlarged view of a portion a of FIG. 3;

FIG. 5 is a schematic cross-sectional view taken along line B-B of the structure of FIG. 2;

FIG. 6 is an enlarged view of part b of FIG. 5;

FIG. 7 shows a schematic view of the washer of the present invention;

FIG. 8 shows a cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 shows an enlarged view of section D of FIG. 8;

wherein the names of the components are as follows:

in the figure: 1, a water inlet groove component, 2, an outer cylinder, 3, an inner cylinder, 4 overflow ports, 5 water outlets, 6 water inlet hoses, 7 water inlets, 8 air holes and 9 air permeable pipes;

100 foam detection ports, 101 foam detection devices, 102 installation pore channels, 103 protection structures, 110 probe detection devices, 111 first detection probes, 112 second detection probes, 113 installation supports and 114 cover bodies;

120 float sensing device, 121 floating ball, 122 reed pipe, 123 non-magnetic conductive pipe, 124 limit platform;

200 of the defoaming structure are adopted,

210 a first defoaming part, 211 a second defoaming part, 212 an installation part, 213 an taking and placing part and 214 a matching part.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.

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 are clearly and completely described below, and the following embodiments are used for illustrating the present invention and are not used for limiting the scope of the present invention.

Example one

As shown in fig. 7-9, the embodiment discloses a washing machine, which comprises an outer tub 2, wherein the outer tub 2 is provided with air vents 8 for realizing air circulation between the inside and the outside of the outer tub 2, and the air vents 8 are provided with defoaming structures for breaking foams overflowing from the outer tub 2 into liquid and guiding the liquid back to the outer tub 2.

In the above scheme, the conventional washing machine, especially the drum washing machine, is generally provided with an air vent 8 communicated with the atmosphere on the outer cylinder 2, and is further provided with a vent pipe 9, one end of the vent pipe 9 is communicated with the air vent 8, and the other end is communicated with the outer side of the outer cylinder 2, and in general, the other end of the vent pipe 9 is communicated with the water inlet tank assembly 1. The air pressure inside and outside the drum of the washing machine is balanced through the vent pipe 9, the sensing efficiency of the water level sensor is improved, the water inlet time can be shortened, meanwhile, the air pressure generated during high-speed dehydration of the drum washing machine is released, and the running stability of the machine is kept. However, in the process of washing clothes by the washing machine, if a user uses excessive high-foam detergent or adds excessive detergent, a large amount of foam is generated in the drum, the excessive foam enters the water inlet tank assembly 1 along the air holes 8 through the vent pipes 9 or directly overflows out of the washing machine, or the foam flows out of the machine from the machine in the process of spin-drying the machine, so that the use of the user is influenced, and great inconvenience and economic loss are brought to the user. Furthermore, in some prior art, a filtering structure is arranged in the vent pipe 9, so that ventilation between the outer cylinder 2 and the outside is realized, and foam is prevented from overflowing through the vent pipe 9. But the setting has increased the manufacturing cost of permeability cell 9 in permeability cell 9, and can't take out the maintenance when taking place to block up, has caused very big inconvenience for the user. In this embodiment, the defoaming structure is arranged at the air holes 8, foams overflowing from the outer barrel 2 are broken into liquid and guided back to the outer barrel 2, the installation and the maintenance are convenient, and the defoaming structure is convenient to take out and clean when being blocked by flocks and the like.

Furthermore, one end of the air vent 8 is connected to the inside of the outer cylinder 2, the other end of the air vent extends upwards to the outside of the outer cylinder 2 to be connected with a vent pipe 9 of the washing machine, the defoaming structure is arranged in the other end of the vent pipe 9,

preferably, the ventilation holes 8 vertically extend upwards to the outside of the outer barrel 2.

In the above scheme, the air hole 8 is generally arranged above the washing machine, so that overflowing foam is broken into liquid and directly guided back to the outer cylinder 2. Inside 8 one end of bleeder vent is connected to urceolus 2, the other end upwards extends to 2 outsides of urceolus, prevents 8 overflows of bleeder vent, defoaming structure sets up in extending to 2 outside other ends of urceolus, and generally speaking, this other end can connect permeability cell 9, the connection and the dismantlement of permeability cell 9 are fairly simple, and defoaming structure sets up in this other end, conveniently takes out when defoaming structure blocks up or takes place other problems and clears up and maintain.

Further, the defoaming structure includes a first defoaming portion 210, the first defoaming portion 210 includes a first body blocking and squeezing foam, the first body is provided with a through hole for ventilation,

more preferably, the first mesh body is honeycomb-shaped,

In the above scheme, first body blocks the foam and plays the effect of extrusion foam when the foam is many, and the foam breaks into liquid under the extrusion, still be equipped with ventilative through-hole on the first body, so first defoaming portion 210 both can realize breaking into liquid with the foam, can guarantee pressure and external intercommunication in the urceolus 2 again. In a preferred embodiment, the first body is provided with a plurality of through holes, that is, a plurality of through holes, to form a first net-shaped body, which can not only break the foam into liquid, but also ensure the pressure inside the outer cylinder 2 to be communicated with the outside. The first net-shaped body is a common structure like a filter screen, and is simple and convenient to produce and low in cost. Especially, the first net-shaped body is honeycomb-shaped, and the net holes are small and dense, so that the defoaming effect is good, and the communication between the pressure in the outer barrel 2 and the outside can be ensured.

Further, the defoaming structure further comprises a second defoaming portion 211, the second defoaming portion 211 comprises a second body for blocking and squeezing foam, the second body is provided with a ventilation through hole,

more preferably, the second mesh-like body is honeycomb-shaped,

In the above scheme, the second body blocks the foam and plays the effect of extrusion foam when the foam is many, and the foam breaks into liquid under the extrusion, still be equipped with ventilative through-hole on the second body, so first defoaming portion 210 both can realize breaking into liquid with the foam, can guarantee pressure and external intercommunication in the urceolus 2 again. In a preferred embodiment, a plurality of through holes, that is, a plurality of through holes, are distributed on the second body to form a second net body, which can not only break the foam into liquid, but also ensure that the pressure inside the outer cylinder 2 is communicated with the outside. The second net-shaped body is a common structure like a filter screen, and has the advantages of simple and convenient production and low cost. Especially, the second reticular body is cellular, and the small and dense meshes have good defoaming effect, and can ensure that the pressure in the outer barrel 2 is communicated with the outside. In addition, set up first body and second body, carry out twice defoaming processing to the foam, carry out further processing with the foam that first body was not broken out completely, the defoaming effect is better.

Further, the defoaming structure further comprises a mounting part 212 for mounting the defoaming structure in the air vent 8, the mounting part 212 is respectively connected with the first defoaming part 210 and the second defoaming part 211, a containing cavity is formed between the first defoaming part 210 and the second defoaming part 211,

preferably, the installation part 212 is of a circular ring structure, the outer wall of the installation part 212 is matched with the inner wall of the air hole 8, and the first defoaming part 210 and the second defoaming part 211 are both connected to the inner wall of the installation part 212.

In the above scheme, the mounting part 212 connects the first defoaming part 210 and the second defoaming part 211 together, and also mounts the defoaming structure in the air hole 8. When the convenience was maintained in needs, take out first defoaming portion 210 and second defoaming portion 211 together and maintain and clear up, conveniently install first defoaming portion 210 and second defoaming portion 211 together again, omit installation and dismantlement step. Form between first defoaming portion 210 and the second defoaming portion 211 and hold the chamber, hold and extrude foam, foam behind first defoaming portion 210 because the pressurized, the volume can increase rapidly when suddenly getting into to hold the chamber, but because the volume that holds the chamber is little, the foam of volume rapid increase receives the extrusion of bigger pressure again rapidly, and then thoroughly destroys. In a preferred embodiment, the mounting portion 212 has a circular ring structure, and the outer wall of the circular ring structure is matched with the inner wall of the air hole 8, so that the circular ring outer wall is more easily matched with the inner wall of the air hole 8 without a gap through which foam can pass. First defoaming portion 210 and second defoaming portion 211 all connect the inner wall at installation department 212, more easily with the cooperation of 8 inner walls of bleeder vent, avoid appearing protruding fish tail inner walls, also connect more easily.

Further, the second defoaming portion 211 is integrally formed with the mounting portion 212, the first defoaming portion 210 is detachably connected with the mounting portion 212,

preferably, the first defoaming portion 210 is clamped with the mounting portion 212, so that the structure is simple, the mounting is convenient,

preferably, be equipped with the screw thread in the installation department 212, first defoaming portion 210 and installation department 212 threaded connection, simple structure, simple to operate.

In the above scheme, second defoaming portion 211 and installation department 212 integrated into one piece simplify the structure, need not the assembly, first defoaming portion 210 can be dismantled with installation department 212 and be connected, and the chamber that holds that forms between convenient first defoaming portion 210 and the second defoaming portion 211 clears up and maintains.

Further, the first body is arranged at a position close to the outer cylinder 2 and is convexly arranged towards the outer cylinder 2, the second body is arranged at a position far away from the outer cylinder 2 and is convexly arranged opposite to the first body,

preferably, the first body and the second body are both hemispherical.

In the above-mentioned scheme, first body sets up towards 2 direction bulges of urceolus, conveniently blocks the foam, receives the foam part breakage that blocks, and the part is crowded to the bulge next door, because there is the existence of bulge to lead to the bulge next door narrow, and a large amount of foams extrusion is here, is broken by the extrusion more easily, and defoaming effect is better. The second body and the first body are reversely arranged, so that the accommodating cavity is enlarged as much as possible, more foams can be accommodated to extrude and destroy the foams on the one hand, and the larger accommodating cavity enables the foams which are just extruded to be larger in volume after the foams enter a larger space suddenly and are not extruded, so that the foams are easier to eliminate. In a preferred embodiment, the first body is hemispherical, so that the distance between the first body and the inner wall of the vent hole 8 is smaller and smaller, the foam is accumulated more and more, the pressure applied to the first body is larger and larger, and the foam is easier to break. The second body is hemispherical for get into the space of the foam that holds the cavity volume suddenly grow and be more and more big earlier, and then be more and more littleer, the defoaming effect is better.

In the above-mentioned scheme, the foam can increase suddenly after first body, still can destroy before the second body, and on the other hand, the through-hole size of second body is big for better ventilative, also is the atmospheric pressure before in order to enable the atmospheric pressure that holds the intracavity to be greater than first body to realize the foam and increase the purpose of volume suddenly. The number of the through holes of the first body is larger than that of the through holes of the second body, and because the foam reaching the second body is obviously less than that of the first body, the foam can be released by arranging too many through holes. In addition, the aperture of the through-hole of first body is less than the aperture of the through-hole of second body, prevents that the line bits from getting into the jam that holds the intracavity and lead to behind the first body, and the line bits is difficult to the clearance.

Furthermore, a matching part 214 matched with and provided with a defoaming structure is arranged in the air hole 8,

preferably, the matching part 214 is a boss protruding from the inner wall of the air hole 8, and the defoaming structure is supported on the boss.

In the above scheme, the fitting part 214 is arranged so that the mounting of the defoaming structure is simpler and more convenient. In a preferred embodiment, the matching portion 214 is a boss, the defoaming structure is supported on the boss through the mounting portion 212, no additional mounting step is needed, simplicity and convenience are achieved, and the defoaming structure cannot move under the action of gravity. The first body protrudes towards the outer cylinder 2, and the outer diameter of the first body is smaller than the inner diameter of the boss. Preferably, installation department 212 and the bleeder vent 8 sliding fit more than the boss, easy to assemble and maintenance, there is not the gap between bleeder vent and the installation department, prevents that the foam from overflowing from the gap between installation department 212 and the bleeder vent 8.

Further, the defoaming structure further includes a pick-and-place unit 213 for facilitating the pick-and-place of the defoaming structure,

preferably, one end of the pick-and-place part 213 is connected to the mounting part 212, the other end extends to the second body direction to be higher than the edge of the vent hole 8,

more preferably, the other end of the pick-and-place part 213 is further provided with a grabbing part suitable for grabbing by hand,

preferably, the taking and placing unit 213 is integrally formed on the mounting unit 212.

In the above scheme, the taking and placing part 213 is provided to facilitate taking out or placing in the defoaming structure because the aperture of the air hole 8 is small and inconvenient to operate. In a preferred embodiment, the other end of the pick-and-place part 213 extends to a position higher than the edge of the vent hole 8, so that the defoaming structure can be easily and conveniently taken out/put in without the need of fingers extending into the vent hole 8. In a more preferred embodiment, the grasping portion may be a bar/bar structure perpendicular to the pick-and-place portion 213. Preferably, the taking and placing portion 213 is integrally formed on the mounting portion 212, so that no additional parts are required, the structure is simple, and the forming is convenient.

Example two

As shown in fig. 1 to 6, the present embodiment provides a drum washing machine, which includes a water inlet tank assembly 1 and an outer tub 2, wherein the water inlet tank assembly 1 is communicated with a water inlet 7 of the outer tub 2, the outer tub 2 is further provided with a foam detection port 100, and a foam detection device 101 for detecting foam in the washing machine is disposed at the foam detection port 100.

The water inlet tank assembly 1 is generally installed at the upper part of the drum washing machine, the water inlet tank assembly 1 comprises a water inlet box and a detergent box, the detergent box is placed in the water inlet box, and electrical elements such as a circuit board and the like are arranged beside the water inlet box. The bottom of one side of the water inlet box is provided with a water outlet 5, and the water outlet 5 is communicated with a water inlet 7 of the outer barrel 2 through a water inlet hose 6. When the washing machine is supplied with water, the external water can be brought into the outer barrel 2 and the inner barrel 3 through the water outlet 5 of the water inlet box, the water inlet hose 6 and the water inlet 7 of the outer barrel 2. When too much laundry detergent or washing powder is put into the inner barrel 3 and the outer barrel 2, foam overflows upwards, overflows into the water inlet tank assembly 1 through the water inlet 7 of the outer barrel 2 and overflows, and electric elements and the surrounding environment are affected.

In the scheme, the foam detection port 100 is additionally arranged on the outer cylinder 2, the foam detection device 101 is arranged in the foam detection port 100, and the foam detection device 101 is electrically connected with the control device of the washing machine and can transmit signals to the control device of the washing machine. So, foam detection device 101 can in time detect the excessive condition of foam, transmits for washing machine's controlling means, and control avoids the foam to overflow, avoids causing the damage to electrical components, avoids potential safety risk, is favorable to washing machine's safe operation, promotes user experience.

In this scheme, the foam detecting device 101 may be any device capable of detecting foam, and may be a probe, a floating ball 121, or other sensors, and may detect foam.

In a further scheme, the water inlet 7 of the outer cylinder 2 is arranged at the front end of the outer cylinder 2, and the foam detection port 100 is arranged at the rear end of the outer cylinder 2.

The "front end" and "rear end" of the present invention are described in terms of the orientation of the existing drum washing machine, the front end refers to the end of the drum washing machine having the laundry input port, and the rear end refers to the bottom side of the outer tub 2 and the inner tub 3.

The water inlet 7 of the outer barrel 2 is arranged at the upper part of the front end of the outer barrel 2, is conveniently communicated with the water outlet 5 of the water inlet box through the water inlet hose 6, and is also convenient for the installation and fixation of the water inlet tank assembly 1. And foam detection mouth 100 sets up in the rear end of urceolus 2, does not influence the installation of intake antrum subassembly 1 promptly, does not influence the connection of intaking box delivery port 5 and urceolus 2 water inlet 7 yet, can also realize installing foam detection device 101, detects the function of the inside foam height of washing machine.

Preferably, the foam detecting port 100 is disposed at an upper portion of the rear end of the outer tub 2, such that the foam detecting port 100 has a certain height, and the foam detecting means 101 is not triggered by the normal degree of foam, and the foam detecting means 101 is triggered only when the foam overflows to a certain height. The intermittent operation of the foam detection device 101 is beneficial to saving energy and avoiding resource waste.

Preferably, the foam detecting port 100 is located on the outer cylinder 2 at the rear side of the bottom of the inner cylinder 3.

In the drum washing machine, an inner drum 3 is provided inside an outer drum 2, and the inner drum 3 is provided coaxially with the outer drum 2. The bottom of the inner cylinder 3 and the bottom of the outer cylinder 2 are adjacently arranged and spaced at a certain distance, so that the inner cylinder 3 can rotate conveniently. The foam detection port 100 of the scheme is positioned on the outer barrel 2 at the rear side of the bottom of the inner barrel 3, so that the influence on the rotary motion of the inner barrel 3 can be avoided, and the foam can be more conveniently detected.

In a further scheme, the height of the position of the foam detection port 100 is not lower than the height of the position of the water inlet 7 of the outer cylinder 2.

In this embodiment, the height is the height from the opening to the ground or the height from the opening to the lowest position of the outer tub 2. The height of the position of the foam detection port 100 is higher than the height of the position of the water inlet 7 of the outer barrel 2, or the height of the position of the foam detection port is the same as the height of the position of the water inlet 7 of the outer barrel 2, so that the normal water inlet of the washing machine is ensured, the water is prevented from overflowing from the foam detection port 100, and the water can be prevented from splashing during high-water-level washing. Preferably, the height of the position of the foam detecting port 100 is higher than the height of the water inlet 7 of the outer cylinder 2.

In a further scheme, the water inlet tank assembly 1 is also provided with an overflow port 4, and the position of the overflow port 4 is higher than the height of a water inlet 7 of the outer barrel 2; the position of the foam detection port 100 is not higher than the height of the overflow port 4, so that foam is prevented from overflowing from the overflow port 4.

The overflow port 4 of the water inlet tank assembly 1 is arranged on the side wall of the water inlet box, which is back to the circuit board, when too much water enters the outer barrel 2 and the inner barrel 3, the water can be guided to enter the side with less electric elements, the damage to the important circuit board and the electric elements is reduced as much as possible, and more serious accidents are avoided.

The height of the foam detection port 100 of the embodiment is higher than the water inlet 7 of the outer cylinder 2 and lower than the overflow port 4 of the water inlet tank assembly 1, so that water inlet is not affected, foam can be detected to react before overflowing to the overflow port 4, foam overflow is avoided, and electrical elements and the surrounding environment are protected.

Preferably, the position of the foam detection opening 100 is slightly lower than the height of the overflow opening 4 of the water inlet tank assembly 1.

In a further aspect, the edge of the foam detecting port 100 protrudes and extends a certain distance to the outside of the outer cylinder 2 to form a mounting hole 102, and the foam detecting device 101 can be mounted in the mounting hole 102.

Further, in this embodiment, the central axis of the foam detecting port 100 may be perpendicular to the central axis of the outer tub 2, or may be parallel to the central axis of the outer tub 2 or may be disposed at a certain angle, as long as the height of the foam detecting port 100 is not lower than the height of the water inlet 7 of the outer tub 2, so as to ensure the normal water inlet of the washing machine, and prevent the water from overflowing from the foam detecting port 100.

The foam detecting opening 100 may further be provided with a cover 114 covering the opening thereof, and the cover 114 may be detachably disposed to close one end of the foam detecting opening 100 facing the outside of the outer tub 2. A mounting frame 113 may be further disposed on a side of the cover 114 facing the inside of the outer tub 2 for mounting and fixing the foam detecting device 101.

Preferably, the foam detection port 100 is disposed at an upper portion of the rear end of the outer cylinder 2, and the central axis is perpendicular to the central axis of the outer cylinder 2, and a detachable cover 114 covering the opening of the foam detection port 100 is further provided.

In a further scheme, a protective structure 103 is arranged on the inner wall of the outer cylinder 2 close to the edge of the foam detection port 100, and the protective structure 103 protrudes inwards relative to the inner wall of the outer cylinder 2. The protective structure 103 can prevent the foam at the normal water level from receiving vibration and the like to trigger the foam detection device 101, thereby avoiding misjudgment. The shielding structure 103 may be a separate member mounted on the inner wall of the outer tub 2 near the edge of the foam detection port 100, or may be formed by protruding a certain distance inward from the inner wall of the outer tub 2.

Preferably, the protective structure 103 comprises a waterproof rib, and the waterproof rib is at least arranged on the front side of the foam detection port 100. The front side in the scheme is away from the bottom of the outer cylinder 2, and the side close to the front end of the outer cylinder 2 is closer to the bottom of the inner cylinder 3. The rotatory in-process of inner tube 3 produces splash and the foam that splashes easily, sets up waterproof muscle in the front side of foam detection mouth 100, also is the manger plate muscle, can avoid splash and foam to trigger foam detection device 101, avoids producing the misjudgement.

Preferably, the peripheral edge of the foam detecting port 100 extends and protrudes a certain distance towards the inside of the outer cylinder 2 to form an annular waterproof rib. This scheme all sets up waterproof muscle at foam detection mouth 100's all edge all around, and what can be better plays the guard action, the better emergence that prevents the misjudgement.

In addition, the present embodiment further provides a control method of a drum washing machine, specifically:

the drum washing machine comprises a water inlet tank assembly 1 and an outer barrel 2, the water inlet tank assembly 1 is communicated with a water inlet 7 of the outer barrel 2, a foam detection port 100 is further arranged on the outer barrel 2 of the drum washing machine, a foam detection device 101 for detecting foam in the drum washing machine is arranged at the foam detection port 100, if the foam detection device 101 detects foam in a certain detection time, a signal is transmitted to a control device of the drum washing machine, and the drum washing machine gives an alarm and/or performs defoaming treatment.

The drum washing machine is provided with an alarm device and a defoaming device, and the alarm device and the defoaming device are respectively connected with a control device of the washing machine. When the foam detection device 101 detects foam within a certain detection time, a signal is transmitted to the control device of the washing machine, and the control device of the washing machine controls the alarm device to give an alarm to prompt a user or automatically controls the defoaming device to work to defoam.

In a preferred scheme, the detection time is longer than the time for the drum washing machine to execute the sloshing water flow, so that splashing water splash and bubbles generated by the execution of the sloshing water flow by the washing machine are eliminated to trigger the bubble detection device 101, and therefore misjudgment is avoided.

EXAMPLE III

As shown in fig. 3 and 4, this embodiment is a further limitation of the first embodiment, in this embodiment, the foam detection device 101 is a probe detection device 110, an edge of the foam detection port 100 protrudes and extends to the outside of the outer cylinder 2 for a certain distance to form a mounting hole 102, the probe detection device 110 is fixedly disposed in the mounting hole 102, and a detection end thereof extends to the inside of the outer cylinder 2 and approaches the inner wall of the outer cylinder 2 or extends into the inside of the outer cylinder 2, thereby ensuring the accuracy of detecting foam.

In a further aspect, the probe detection device 110 includes a first detection probe 111 and a second detection probe 112, and a detection end of the first detection probe 111 and/or the second detection probe 112 is located in the foam detection port 100 and is flush with an inner wall of the outer cylinder 2.

The mode can not hinder the installation of the inner barrel 3, and can detect the foam at the foam detection port 100 at the first time, so that the signals can be quickly transmitted to the washing machine, the washing machine can quickly react and process the foam, and the foam is prevented from overflowing.

Further, the foam detecting port 100 is disposed at the upper portion of the rear end of the outer cylinder 2, and the central axis is perpendicular to the central axis of the outer cylinder 2, and a detachable cover 114 covering the opening of the foam detecting port 100 is further disposed. The cover body 114 is further provided with a mounting frame 113 on one side facing the inside of the outer cylinder 2, the first detection probe 111 and the second detection probe 112 of the probe detection device 110 are fixed on the mounting frame 113, and the detection end is located in the foam detection port 100, faces the inside of the outer cylinder 2, and is flush with the inner wall of the outer cylinder 2.

In a further scheme, a protective structure 103 is arranged on the inner wall of the outer cylinder 2 close to the edge of the foam detection port 100, and the protective structure 103 protrudes inwards relative to the inner wall of the outer cylinder 2; preferably, the peripheral edge of the foam detection port 100 extends and protrudes a certain distance into the outer tube 2 to form an annular waterproof rib, so that splashed spray and foam are prevented from triggering the foam detection device 101, and misjudgment is avoided.

when the foam of the washing machine is excessive and overflows upwards to the foam detection port 100 in the operation process of the washing machine, the probe detection device 110 generates a signal after contacting the foam and transmits the signal to a control device of the washing machine; the control device judges whether the foam exists and/or the amount of the foam according to the current and/or conductivity change between the first detection probe 111 and the second detection probe 112, and then controls the alarm device to give an alarm to prompt a user, or automatically controls the defoaming device to work to defoam.

In a further scheme, the detection time is longer than the time for the drum washing machine to execute the surging water flow, so that splashing water splash and foam generated by the washing machine executing the surging water flow are eliminated, the condition that the foam detection device 101 is triggered by the foam is avoided, and misjudgment is avoided.

Example four

As shown in fig. 5 and 6, this embodiment is a further limitation of the first embodiment, in this embodiment, the bubble detecting device 101 is a float sensing device 120, the outer cylinder 2 is provided with a bubble detecting port 100, the float sensing device 120 is arranged at the bubble detecting port 100, and when bubbles overflow to be close to the bubble detecting port 100 in the washing machine, the float sensing device 120 generates a signal and transmits the signal to the control device of the washing machine.

In the scheme, the floater sensing device 120 is adopted to detect foam, and when excessive foam in the washing machine overflows to a certain degree, partial structure in the floater sensing device 120 can be driven, so that the state of the floater sensing device 120 is changed. Because the splash and the foam that splash can not change the state of float sensing device 120, the height of the foam can be detected more accurately to a certain extent by float sensing device 120, avoid misjudgment.

In a further scheme, the edge of the foam detection port 100 protrudes and extends to the outside of the outer cylinder 2 for a certain distance to form a mounting hole 102; the float sensing device 120 is fixedly arranged in the mounting hole channel 102, and comprises a non-magnetic conductive pipe 123 with a reed pipe 122 arranged inside and a floating ball 121 sleeved on the non-magnetic conductive pipe 123, wherein when the floating ball 121 is disconnected from the reed pipe 122, the floating ball approaches the inner wall of the outer cylinder 2 or extends into the inner part of the outer cylinder 2.

The upper end of the mounting hole 102 is provided with a limiting platform 124, the limiting platform 124 is formed by partially protruding the inner wall of the mounting hole 102 towards the center thereof, the reed pipe 122 is positioned on the limiting platform 124, and the floating ball 121 is positioned below the limiting platform 124;

preferably, the circumferential inner wall of the mounting hole 102 protrudes towards the center thereof to form an annular limiting platform 124.

When the water level and the foam in the washing machine are normal, the floating ball 121 is located at the lowest end of the non-magnetic pipe 123, and is close to the inner wall of the outer cylinder 2 or extends into the inner part of the outer cylinder 2. At this time, the float 121 is disconnected from the reed pipe 122, and the float sensing device 120 does not send a signal; when the foam in the washing machine overflows to be close to the foam detection port 100, the foam pushes the floating ball 121 to rise until the floating ball 121 and the reed switch 122 approach to a certain distance range or are attached to each other, a signal is generated and transmitted to a control device of the washing machine, and the control device receives a signal indicating that the water level or the foam is abnormal and then makes a next reaction.

when the foam in the washing machine overflows to be close to the foam detection port 100, the floater sensing device 120 generates a signal and transmits the signal to a control device of the washing machine within a certain detection time, and the washing machine gives an alarm and/or performs defoaming treatment.

In a further scheme, when the foam of the washing machine is excessive and overflows upwards to be close to the foam detection port 100 in the operation process of the washing machine, the floating ball of the float sensing device 120 rises along with the foam, is attracted with the reed pipe 122 within a certain detection time to generate a signal, and transmits the signal to a control device of the washing machine. The control device controls the alarm device to give an alarm to prompt a user or automatically controls the defoaming device to work to defoam.

In a further aspect, the detection time is longer than the time for the drum washing machine to execute the surging water flow. Therefore, the condition that splashed water splash and foam generated by the washing machine executing the surging water flow trigger the foam detection device 101 is eliminated, and the misjudgment is avoided.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A washing machine comprises an outer barrel and is characterized in that air holes for realizing air circulation between the inside and the outside of the outer barrel are formed in the outer barrel, and defoaming structures for breaking foams overflowing from the outer barrel into liquid and guiding the liquid back to the outer barrel are arranged at the air holes;

the defoaming structure comprises a first defoaming part and a second defoaming part, the first defoaming part comprises a first body for blocking and extruding foam, the first body is provided with a ventilating through hole, the second defoaming part comprises a second body for blocking and extruding foam, and the second body is provided with a ventilating through hole;

defoaming structure still includes installs the installation department at the venthole with defoaming structure, the installation department is connected with first defoaming portion and second defoaming portion respectively, forms between first defoaming portion and the second defoaming portion and holds the chamber.

2. The washing machine as claimed in claim 1, wherein the airing hole has one end connected to the inside of the tub and the other end extending upward to the outside of the tub, and the defoaming structure is provided in the other end.

3. The washing machine as claimed in claim 2, wherein the airing hole is vertically extended upward to the outside of the tub.

4. The washing machine as claimed in claim 1, wherein the first body has a plurality of through holes formed therein to form a first net-shaped body.

5. A washing machine as claimed in claim 4 wherein the first mesh body is honeycomb-shaped.

6. A washing machine as claimed in claim 5 wherein the apertures of the first mesh body are of the same shape and size and are evenly distributed.

7. A washing machine as claimed in claim 4 wherein the second body has a plurality of apertures distributed therein to form a second mesh-like body.

8. The washing machine as claimed in claim 7, wherein the second net-shaped body is formed in a honeycomb shape.

9. The washing machine as claimed in claim 8, wherein the plurality of through holes of the second mesh body have the same shape and size and are uniformly distributed.

10. The washing machine as claimed in claim 1, wherein the mounting part has a circular ring structure, the outer wall of the mounting part is matched with the inner wall of the air hole, and the first defoaming part and the second defoaming part are both connected to the inner wall of the mounting part.

11. A washing machine as claimed in claim 10 wherein the second bubble removing portion is integrally formed with the mounting portion and the first bubble removing portion is detachably connected to the mounting portion.

12. A washing machine as claimed in claim 11 wherein the first bubble removing portion is snap-fitted to the mounting portion.

13. A washing machine as claimed in claim 11 wherein the mounting portion is threaded and the first bubble removing portion is threaded into the mounting portion.

14. A washing machine as claimed in claim 10 wherein the first body is disposed adjacent the outer tub and projects in a direction of the outer tub, and the second body is disposed remote from the outer tub and projects opposite the first body.

15. The washing machine as claimed in claim 14, wherein the first body and the second body are hemispherical.

16. A washing machine as claimed in any one of claims 1 to 15 wherein the apertures of the through-holes of the first body are smaller than the apertures of the through-holes of the second body, the number of through-holes of the first body being greater than the number of through-holes of the second body.

17. The washing machine as claimed in claim 1, wherein the ventilation hole is provided with a fitting part for fitting the defoaming structure.

18. The washing machine as claimed in claim 17, wherein the fitting portion is a projection protruding from an inner wall of the vent hole, and the defoaming structure is supported on the projection.

19. A washing machine as claimed in claim 17 or 18 wherein the defoaming structure further comprises access means to facilitate removal/installation of the defoaming structure.

20. The washing machine as claimed in claim 19, wherein the taking and placing part has one end connected to the mounting part and the other end extending to the second body to a position higher than the edge of the airing hole.

21. A washing machine as claimed in claim 20 wherein the other end of the access portion is further provided with a gripping portion adapted to be gripped by a hand.

22. A washing machine as claimed in claim 21 wherein the access portion is integrally formed with the mounting portion.