CN113136698B

CN113136698B - Descaling system of washing machine, washing machine and control method

Info

Publication number: CN113136698B
Application number: CN202110417579.1A
Authority: CN
Inventors: 周多平; 吕钟朋; 黄强; 刘如阳; 郭绍辉
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2022-04-26
Anticipated expiration: 2041-04-19
Also published as: CN113136698A

Abstract

The invention belongs to the field of washing machines, and particularly discloses a descaling system of a washing machine, the washing machine and a control method, wherein the washing machine comprises an inner barrel and an outer barrel which is rotatably arranged in the inner barrel, and the descaling system is characterized by comprising: the descaling device comprises a liquid storage tank, a first liquid inlet and a second liquid inlet, wherein the liquid storage tank is at least provided with a liquid outlet and a first feeding port, and the first feeding port is used for feeding a descaling agent or descaling agent diluent into the liquid storage tank; the liquid pumping device is connected with the liquid outlet and is used for pumping the liquid in the liquid storage tank; the spraying device comprises a spraying pipe and a spray head, wherein the liquid inlet end of the spraying pipe is connected with the liquid outlet of the liquid pumping device, the liquid outlet end of the spraying pipe is connected with the spray head, and the spray head is positioned between the inner barrel and the outer barrel and used for spraying the descaling agent to the outer wall of the inner barrel, the inner wall of the outer barrel and the space between the inner barrel and the outer barrel. The descaling system provided by the invention can manually put in the descaling agent in the cylinder cleaning process, so that the use experience of a user is improved.

Description

Descaling system of washing machine, washing machine and control method

Technical Field

The invention belongs to the field of washing machines, and particularly relates to a descaling system of a washing machine, the washing machine and a control method.

Background

After the washing machine runs for a long time, a large amount of stains are attached to the surfaces of parts between the inner barrel and the outer barrel of the washing machine and between the inner barrel and the outer barrel, the main components of the stains are clothes fibers which are mainly distributed on a support outside the bottom of the inner barrel, the outer side face, close to the bottom, of the inner barrel and the bottom of the outer barrel, accumulated dirt is easy to breed bacteria, peculiar smell is generated, and secondary pollution is caused to clothes when the clothes are washed.

The washing machine generally has a self-cleaning function, particularly, the interior of the washing machine is cleaned through a drum cleaning mode with a specific high water level, but the cleaning mode has no specific detergent feeding device, and the cleaning capability of the cleaning mode is limited for some dirt which is dried and attached to the drum wall.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a washing machine capable of manually adding a descaling agent in a cylinder cleaning process.

In order to solve the above technical problems, a first object of the present invention is to provide a descaling system for a washing machine, the washing machine including an inner tub and an outer tub rotatably disposed in the inner tub, the descaling system comprising:

the descaling device comprises a liquid storage tank, a first liquid inlet and a second liquid inlet, wherein the liquid storage tank is at least provided with a liquid outlet and a first feeding port, and the first feeding port is used for feeding a descaling agent or descaling agent diluent into the liquid storage tank;

the liquid pumping device is connected with the liquid outlet and is used for pumping the liquid in the liquid storage tank;

the spraying device comprises a spraying pipe and a spray head, wherein the liquid inlet end of the spraying pipe is connected with the liquid outlet of the liquid pumping device, the liquid outlet end of the spraying pipe is connected with the spray head, and the spray head is positioned between the inner barrel and the outer barrel and used for spraying a descaling agent to the outer wall of the inner barrel, the inner wall of the outer barrel and the space between the inner barrel and the outer barrel.

Further optionally, a liquid inlet is further formed in the liquid storage tank, and a first water inlet pipe is connected to the liquid inlet.

Further optionally, the spray head is rotatably arranged at the liquid outlet end of the spray pipe.

Further optionally, the descaling system further comprises a stirring device, wherein the stirring device comprises a stirring motor and a stirring blade, the stirring motor is located outside the liquid storage tank, and the stirring blade is located in the liquid storage tank and connected with a rotor of the stirring motor.

Further optionally, the first feeding port is formed in the top of the liquid storage tank, the liquid outlet is formed in the side of the liquid storage tank, and the stirring motor is located on the opposite side of the liquid outlet; the stirring blade is transversely arranged in the liquid storage tank by a certain length, one end of the stirring blade is connected with a rotor of the stirring motor, and the other end of the stirring blade is close to the liquid outlet.

The second object of the invention also provides a washing machine, which comprises the descaling system.

Further optionally, the washing machine comprises a housing, the outer tub is located within the housing, and the liquid storage tank is located between the housing and the outer tub; the shell is provided with a second putting port, and the first putting port is communicated with the second putting port.

Further optionally, the washing machine is a drum washing machine, the casing includes a top cover, the liquid storage tank is located between the top cover and the outer tub, and the second input port is opened on the top cover.

Further optionally, a throwing funnel is further arranged between the first throwing port and the second throwing port, an inlet of the throwing funnel is located at the second throwing port, and an outlet of the throwing funnel is located at the first throwing port.

Further optionally, a sealing cover is further arranged on the top cover, and the sealing cover is arranged at the second throwing opening in a foldable mode and used for sealing the second throwing opening.

Further optionally, the washing machine comprises a detergent box, and the washing machine further comprises a second water inlet pipe, wherein the second water inlet pipe is communicated with the detergent box.

Further optionally, a liquid inlet is further formed in the liquid storage tank, a first water inlet pipe is connected to the liquid inlet, the washing machine comprises a water inlet valve, and the water inlet valve is connected with the first water inlet pipe and the second water inlet pipe and used for controlling the connection and disconnection of the first water inlet pipe and the second water inlet pipe.

The third object of the present invention also provides a control method of a washing machine, the washing machine including a descaling mode, when a descaling command is received, the control method including:

controlling the liquid pumping device to start, and starting the spray head to spray;

when the condition of finishing spraying is reached, controlling the liquid pumping device to stop starting, and stopping spraying by the spray head;

when the time for stopping spraying of the spray head reaches the preset retention time, controlling the inner barrel to rotate at a first rotating speed after controlling water injection to the inner barrel to reach the preset water inlet level;

and when the preset rotation time is reached, controlling the inner barrel to stop rotating.

Further optionally, the condition for reaching the end of spraying is as follows: and reaching the preset spraying time, or the flow of the spray head is smaller than the preset flow, or the water level of the liquid storage tank reaches a first preset water level.

Further optionally, the inner barrel is controlled to rotate at a second rotating speed in the spraying process of the spray head, and the first rotating speed is larger than or equal to the second rotating speed.

Further optionally, the descaling system comprises a stirring device, the stirring device comprises a stirring motor and a stirring blade, the stirring motor is located outside the liquid storage tank, the stirring blade is located in the liquid storage tank and connected with a rotor of the stirring motor, and the control method comprises the step of controlling the stirring device to start before or during spraying of the spray head.

Further optionally, a liquid inlet is formed in the liquid storage tank, a first water inlet pipe is connected to the liquid inlet, a water inlet valve is arranged on the first water inlet pipe, after a descaling instruction is received, the first water inlet pipe is controlled to be connected before the stirring device is controlled to be started, and when the water inlet condition is finished, the first water inlet pipe is controlled to be disconnected.

Further optionally, the condition of finishing water inlet is that a preset water inlet time is reached, or the water level of the liquid storage tank reaches a second preset water level.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

the invention adopts a manual feeding device special for self-cleaning of the washing machine, which can automatically stir and dilute a descaling agent, spray the descaling agent to be attached between the inner barrel wall and the outer barrel wall of the washing machine, start water inlet circulation washing after standing and soaking for a period of time, and clean expanded dirt after soaking, thereby achieving the purpose of cleaning the washing machine barrel.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

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: the structure of the self-cleaning throwing system of the embodiment of the invention is shown;

FIG. 2: is a schematic view of the installation of the spray head of the embodiment of the invention;

FIG. 3: is an enlarged view at A in FIG. 2;

FIG. 4: is a partial detail view of the showerhead portion of fig. 3;

FIG. 5: a schematic diagram of a structure of a stirring device in an embodiment of the invention

FIG. 6: a structure view of a washing machine according to an embodiment of the present invention;

wherein: 1-a water inlet valve; 2-a descaling system; 3-a detergent box; 4-a drainage system; 5-a top cover; 6-a second input port; 7-outer barrel; 8-a linker; 9-inner barrel; 10-a second water inlet pipe; 21-a liquid storage tank; 22-a liquid pumping device; 25-a first water inlet pipe; 26-a throwing funnel; 51-a sealing cover; 71-a limit convex ring; 81-limiting groove ring; 82-lower part of joint; 83-upper part of joint; 84-a first clip; 85-a second clamp; 231-a spray head; 232-spray pipe; 241-a stirring motor; 242-stirring blades; 2311-covering the spray head; 2312-lower cover of spray head; 2313-connecting tube; 2314-spraying holes; 2315 sealing ring.

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 to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, the descaling system of the washing machine comprises an inner barrel 9 and an outer barrel 7 coaxially arranged in the inner barrel 9, and the descaling system 2 comprises a liquid storage tank 21, a liquid pumping device 22 and a spraying device. The liquid storage tank 21 is positioned outside or inside the washing machine, and the liquid storage tank 21 is used as a container and is a place for containing the descaling agent; the liquid storage tank 21 is at least provided with a liquid outlet and a first putting port, wherein the first putting port is used for putting the descaling agent or the descaling agent diluent into the liquid storage tank 21. The scale remover thrown from the first throwing port can be a scale remover (water agent or powder) before dilution or a diluted scale remover. In some embodiments, the reservoir 21 may be provided separately outside the washing machine, or within the housing of the washing machine. The liquid storage tank 21 is provided with a first feeding port, and the descaling agent is fed into the liquid storage tank 21 through the first feeding port; the liquid pumping device is connected with the liquid outlet and used for pumping the liquid in the liquid storage tank; in some embodiments, the pumping device 22 is fixed to the tank 21 by screws, and functions to pump out the descaling fluid in the tank 21 to be sprayed onto the inner and outer tub 7 walls through the spray head 231 at high pressure. The spraying device comprises a spraying pipe 232 and a spray head 231, the liquid inlet end of the spraying pipe 232 is connected with the liquid outlet of the liquid pumping device 22, the liquid outlet end is connected with the spray head 231, and the spray head 231 is positioned between the inner barrel 9 and the outer barrel 7; the liquid pumped from the liquid storage tank 21 by the liquid pumping device 22 flows through the spray pipe 232 and is sprayed by the spray head 231 to clean the outer wall of the inner barrel 9, the inner wall of the outer barrel 7 and the space between the inner barrel 7 and the outer barrel 7.

The descaling system 2 of this embodiment can manually throw in the descaling agent, and the descaling agent is sprayed by the spray head 231 of the spray device after being thrown into the liquid storage tank 21 and then is attached to the outer wall of the inner barrel 9, the inner wall of the outer barrel 7 and the space between the inner barrel 7 and the outer barrel 7 of the washing machine, so as to achieve the purpose of cleaning the washing machine barrel.

Further optionally, the liquid storage tank is further provided with a liquid inlet, the liquid inlet is connected with a first water inlet pipe 25, and the first water inlet pipe 25 leads purified water or diluent for diluting the descaling agent flowing into the water inlet valve 1 into the liquid storage tank 21.

Further optionally, the spray head 231 includes an upper spray head cover 2311 and a lower spray head cover 2312, the upper spray head cover 2311 and the lower spray head cover 2312 are fastened to form a buffer chamber, and a plurality of spray holes 2314 are formed in the upper spray head cover 2311 and/or the lower spray head cover 2312; the spraying upper cover extends towards the direction far away from the spraying lower cover to form a connecting pipe 2313, and the connecting pipe 2313 is communicated with the buffer chamber; the liquid storage box 21 is located outside the outer barrel 7, a mounting opening is arranged on the outer barrel 7 of the washing machine, and the connecting pipe 2313 extends out of the outer barrel 7 from the mounting opening and is communicated with the spray pipe 232.

The arrangement and structure of the nozzle 231 of this embodiment are shown in fig. 3 and 4, and the structure mainly includes an upper nozzle cover 2311 and a lower nozzle cover 2312, in some embodiments, the two parts of the upper nozzle cover 2311 and the lower nozzle cover 2312 are connected by a snap structure, both the upper nozzle cover 2311 and the lower nozzle cover 2312 are half oblate spheres, spray holes 2314 spraying in all directions are formed in the oblate spheres, and the oblate spheres are assembled to form a oblate structure, so that the mechanism and the spray holes 2314 can ensure that the descaling agent can be sprayed to all positions of the bucket wall to the maximum extent, and in addition, a sealing ring 2315 with an annular structure is arranged between the upper nozzle cover 2311 and the lower nozzle cover 2312 and respectively in interference fit with the upper nozzle cover 2311 and the lower nozzle cover 2312 to ensure the sealing performance when the descaling agent is sprayed under high pressure.

Further alternatively, as shown in fig. 3, the joint 8 is assembled on the mounting opening, the joint 8 has a through hole penetrating from front to back, the joint 8 is embedded on the mounting opening, and the connecting pipe 2313 extends out of the outer tub 7 from the through hole to be communicated with the shower pipe 232. Specifically, the joint 8 comprises a tubular main body and a clamping part formed outside the tubular main body, wherein the clamping part divides the tubular main body into a joint upper part 82 and a joint lower part 83; the edge of the mounting opening extends to the outside of the outer barrel 7 to form a limit convex ring 71, and the clamping part is provided with a limit groove ring 81 matched with the limit convex ring 71; when the joint 8 is assembled at the mounting opening, the lower part 83 of the joint is positioned in the limiting convex ring 71, and the limiting convex ring 71 is limited in the limiting groove ring 81; the joint 8 is further provided with a first clip 84 and a second clip 85, the first clip 84 is fastened to an outer wall of the clamping portion, the second clip 85 is fastened to an outer wall of the joint upper portion 82, and the first clip 84 and the second clip 85 are provided to prevent the spray head 231 and water inside the washing machine from flowing outside the tub.

Further optionally, the spray head 231 is rotatably disposed at the liquid outlet end of the spray pipe 232, optionally, the spray head 231 is a universal spray head 231, and the descaling agent can be sprayed on the outer wall of the inner barrel 9, the inner wall of the outer barrel 7 and the space between the inner barrel 9 and the outer barrel 7 in an all-around manner by rotating the spray head 231 in the spraying process, so that the cleaning is more thorough, and the spray head 231 can rotate for 360 degrees optionally.

Further optionally, the descaling system 2 further comprises a stirring device, and the stirring device can uniformly dilute the powder or liquid descaling agent blocks by stirring. The stirring device comprises a stirring motor 241 and a stirring blade 242 connected with a rotor of the stirring motor 241, the stirring motor 241 is located outside the liquid storage tank 21, in some embodiment modes, the stirring motor 241 is fixed on the outer wall of the liquid storage tank 21 through a screw, the stirring blade 242 is sleeved on the rotor of the stirring motor 241, and the stirring blade 242 is located in the liquid storage tank 21. As shown in fig. 5, the stirring blade 242 includes a central shaft and a plurality of wavy blades arranged along the circumference of the central shaft, and such a structure can make the descaling fluid stirred more uniformly.

Further optionally, the first feeding port is formed in the top of the liquid storage tank, the liquid outlet is formed in the side of the liquid storage tank, and the stirring motor is located on the opposite side of the liquid outlet; the stirring blade is transversely arranged in the liquid storage tank by a certain length, one end of the stirring blade is connected with a rotor of the stirring motor, and the other end of the stirring blade is close to the liquid outlet. Optionally, the other end of the stirring blade is located below the liquid outlet, so that the undissolved powdery descaling agent is thrown away from the liquid outlet under the stirring action of the stirring blade, and the undissolved powdery descaling agent is prevented from being accumulated at the liquid outlet to block the liquid outlet.

The working process of the descaling system 2 is as follows: when a user opens the descaling mode and puts in the descaling agent, water starts to enter through one valve port of the water inlet valve 1, the stirring motor 241 starts to operate after the water inflow is enough, the stirring blade 242 is driven to stir and dilute the descaling agent in the liquid storage tank 21, the stirring motor 241 stops operating after stirring for a period of time, and the pumping device 22 sprays the descaling liquid in the liquid storage tank 21 to the interior of the outer barrel 7 through the spray head 231.

The present embodiment also proposes a washing machine, as shown in fig. 2 and 6, the washing machine includes a housing, an outer tub 7 located in the housing, and a liquid storage tank 21 located between the housing and the outer tub 7; the shell is provided with a second putting opening 6, and the first putting opening is communicated with the second putting opening 6. The second throwing port 6 can be arranged at the upper part and the side part of the shell of the washing machine, the first throwing can be arranged opposite to the second throwing, or not, if not, a communicating channel is needed to be arranged between the first throwing port and the second throwing port 6 to communicate the first throwing with the second throwing port 6.

Further optionally, the washing machine is a drum washing machine, the housing includes a top cover 5, the liquid storage tank 21 is located between the top cover 5 and the outer tub 7, and the second input port 6 is opened on the top cover 5. The first input port is located below the second input port 6, the first input can be arranged opposite to the second input, or not, if not, a communication channel is needed to be arranged between the first input port and the second input port 6 to communicate the first input with the second input port 6.

Further optionally, a throwing funnel 26 is further arranged between the first throwing port and the second throwing port 6, the first throwing port and the second throwing port 6 are arranged oppositely, an inlet of the throwing funnel 26 is located at the second throwing port 6, an outlet of the throwing funnel 26 is located at the first throwing port, and the funnel-shaped structure of the throwing funnel enables the thrown-in descaling agent to smoothly enter the liquid storage tank 21.

Further optionally, a sealing cover 51 is further disposed on the top cover 5, and the sealing cover 51 is arranged at the second input opening 6 in a foldable manner to cover the second input opening 6. A turnover cover is arranged above the second putting-in opening 6, and dust can be prevented from entering the liquid storage box 21 by closing the cover after putting is finished.

Further optionally, the washing machine comprises a detergent box 3, and the washing machine further comprises a second water inlet pipe 10, wherein the second water inlet pipe 10 is communicated with the detergent box 3. The first water inlet pipe 25 and the second water inlet pipe 10 are independent of each other, and the on-off of the pipes can be controlled by respectively arranging different water inlet valves 1 on the first water inlet pipe 25 and the second water inlet pipe 10, or by arranging a water inlet valve 1, such as a three-way valve, to respectively control the on-off of the first water inlet valve 1 and the second water inlet valve 1.

Further optionally, the washing machine comprises a water inlet valve 1, the water inlet valve 1 is connected to the first water inlet pipe 25 and the second water inlet pipe 10 for controlling the on/off of the first water inlet pipe 25 and the second water inlet pipe 10, and the water inlet valve 1 in this embodiment is optionally a three-way valve.

The embodiment further provides a control method of a washing machine, the washing machine comprises a descaling mode, and when a descaling command is received, the control method comprises the following steps:

Further optionally, when the spraying head 231 is rotatably disposed at the liquid outlet end of the spraying pipe 232, in step S1, the spraying head 231 is controlled to rotate freely during the spraying process of the spraying head 231, so that the descaling agent can be sprayed in all directions, and the barrel can be cleaned more thoroughly.

Further optionally, the inner barrel is controlled to rotate at a second rotating speed in the spraying process of the spray head, and the first rotating speed is larger than or equal to the second rotating speed. In the spraying process, the inner barrel controls the slow rotation of the inner barrel 9 to uniformly spray the diluted descaling agent on the wall of the inner barrel 9, and after the descaling agent is sprayed, the inner barrel 9 stops rotating.

Further optionally, the descaling system comprises a stirring device, the stirring device comprises a stirring motor and a stirring blade, the stirring motor is located outside the liquid storage tank, the stirring blade is located in the liquid storage tank and connected with a rotor of the stirring motor, and the control method comprises the step of controlling the stirring device to be started before or during spraying of the spray head, so that the descaling agent in the liquid storage device is fully dissolved. .

Further optionally, a liquid inlet is formed in the liquid storage tank, the liquid inlet is connected with a first water inlet pipe, a water inlet valve is arranged on the first water inlet pipe, after a descaling command is received, the first water inlet pipe is controlled to be connected before the stirring device is controlled to be started, and when the condition that water inlet is finished is achieved, the first water inlet pipe is controlled to be disconnected.

Further optionally, the condition for finishing water inflow is that a preset water inflow time is reached, or the water level of the liquid storage tank reaches a second preset water level.

In some embodiments, when the washing machine receives a descaling command, the control method comprises the following steps

S1, controlling the first water inlet pipe 25 to be conducted, controlling the first water inlet pipe 25 to be disconnected when the preset water inlet time is reached or the water level of the liquid storage tank 21 reaches a second preset water level, controlling the pump liquid device 22 to be started, and enabling the spray head 231 to start spraying to enter S2;

a user manually puts the detergent into the liquid storage tank 21 from a first putting-in opening at the top of the washing machine for dilution, controls the first water inlet pipe 25 to be disconnected after reaching the preset water inlet time or reaching a second preset water level of the liquid storage tank 21, and then controls the pump liquid device 22 to spray the diluted and dissolved detergent solution onto the inner barrel wall of the washing machine, wherein the second preset water level is the highest water level allowed to be reached by the water storage tank or the water level for dissolving the detergent matched with the added detergent amount.

S2, when the flow of the liquid sprayed by the spray head 231 is detected to be smaller than the preset flow or the water level of the liquid storage tank 21 is detected to be lower than the first preset water level, or the spraying time is reached, the pump liquid device 22 is controlled to stop starting, the spray head 231 stops spraying, and the process enters S3; the first predetermined water level is less than the second predetermined water level, wherein the first water level is the lowest water level allowed by the reservoir 21 (when the reservoir 21 is empty).

And S3, after the spraying time of the spray head 231 stops reaching the preset retention time, S4 is entered, and after standing for a period of time, the dirt is expanded under the soaking of the descaling agent so as to be further removed. The preset residence time can be adjusted according to the actual situation, and the preset residence time can be 15-30 min optionally.

S4, controlling the conduction of the second water inlet pipe 10 when the water level of the inner barrel reaches the preset water inlet level, controlling the inner barrel 9 to rotate at the first rotating speed, and entering S5; the washing machine can automatically pump pure water into the detergent box 3 through the water inlet valve 1, the pure water flows into the barrel through the detergent box 3, the water inlet is stopped after the water level reaches a certain height after the water inlet is finished, the motor 241 starts to run rapidly at the moment, the inner barrel 9 is driven by the motor 241 to rotate so as to further wash the barrel wall, and therefore the soaked and expanded dirt is washed, and the purpose of cleaning the barrel is achieved. The preset feed water level is optionally the highest water level at which the washing machine washes.

And S5, controlling the inner barrel to stop rotating after the preset rotating time is reached, and controlling the washing machine to drain water through the drainage system 4. The preset rotation time can be adjusted according to actual conditions, and the preset rotation time can be optionally 5-10 min. In some embodiments, the descaling process may be finished after the inner tub is operated for a preset rotation time, and in other embodiments, the steps of S4 and S5 may be repeated until the tub cleaning is finished after a set number of times. The set times can be adjusted according to actual conditions, and the set times can be selected to be 2 times, so that the barrel can be cleaned more thoroughly.

In the embodiment, the descaling agent is automatically stirred and diluted by the descaling system 2 and then sprayed to be attached to the inner wall and the outer wall of the inner barrel and the outer barrel 7 of the washing machine, the washing machine is kept stand and soaked for a period of time, then water feeding circulation washing is started, and swelled dirt after soaking is cleaned up, so that the aim of cleaning the barrel of the washing machine is fulfilled, the problem of dirt accumulation in long-term operation of the washing machine is solved, and the problem of incomplete descaling in a direct spraying and barrel cleaning mode descaling mode is solved.

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 comprising a housing, an outer tub located within the housing, and an inner tub rotatably disposed within the outer tub, characterized in that the washing machine further comprises a descaling system comprising:

a liquid storage tank located between the housing and the outer tub; the liquid storage tank is provided with a liquid inlet, a liquid outlet and a first putting port, wherein the first putting port is used for putting a descaling agent or descaling agent diluent into the liquid storage tank; a second throwing port is formed in the shell, and the first throwing port is communicated with the second throwing port; the liquid inlet is connected with a first water inlet pipe;

the spraying device comprises a spraying pipe and a spray head, wherein the liquid inlet end of the spraying pipe is connected with the liquid outlet of the liquid pumping device, the liquid outlet end of the spraying pipe is connected with the spray head, and the spray head is positioned between the inner barrel and the outer barrel and used for spraying a descaling agent to the outer wall of the inner barrel, the inner wall of the outer barrel and the space between the inner barrel and the outer barrel;

the stirring device comprises a stirring motor and a stirring blade, the stirring motor is positioned outside the liquid storage tank, and the stirring blade is positioned in the liquid storage tank and connected with a rotor of the stirring motor;

when a descaling command is received, the first water inlet pipe is controlled to be connected, and when the water inlet finishing condition is reached, the first water inlet pipe is controlled to be disconnected; then controlling the stirring device to start, controlling the liquid pumping device to start, and starting the spray head to spray; when the condition of finishing spraying is reached, controlling the liquid pumping device to stop starting, and stopping spraying by the spray head; when the time for stopping spraying of the spray head reaches the preset retention time, controlling the inner barrel to rotate at a first rotating speed after controlling water injection to the inner barrel to reach the preset water inlet level; and when the preset rotation time is reached, controlling the inner barrel to stop rotating.

2. The washing machine as claimed in claim 1, wherein the shower head is rotatably provided at the outlet end of the shower pipe.

3. The washing machine as claimed in claim 1, wherein the first input port is opened at a top of the liquid storage tank, the liquid outlet is opened at a side of the liquid storage tank, and the agitator motor is located at an opposite side of the liquid outlet; the stirring blade is transversely arranged in the liquid storage tank by a certain length, one end of the stirring blade is connected with a rotor of the stirring motor, and the other end of the stirring blade is close to the liquid outlet.

4. The washing machine as claimed in claim 1, wherein the washing machine is a drum washing machine, the casing includes a top cover, the reservoir is located between the top cover and the tub, and the second input port is opened on the top cover.

5. A washing machine as claimed in claim 4 wherein a dispensing funnel is provided between the first and second dispensing openings, the inlet of the dispensing funnel being located at the second dispensing opening and the outlet of the dispensing funnel being located at the first dispensing opening.

6. A washing machine as claimed in claim 4 or 5 wherein the top cover is further provided with a sealing cover, the sealing cover being foldably provided at the second dispensing opening for closing the second dispensing opening.

7. The washing machine as claimed in claim 1, wherein the washing machine includes a detergent box, the washing machine further comprising a second water inlet pipe, the second water inlet pipe being in communication with the detergent box.

8. The washing machine as claimed in claim 7, comprising a water inlet valve connected to the first water inlet pipe and the second water inlet pipe for controlling the opening and closing of the first water inlet pipe and the second water inlet pipe.

9. A control method of a washing machine according to any one of claims 1 to 8, wherein the washing machine includes a descaling mode, and when a descaling command is received, the control method comprises:

controlling the first water inlet pipe to be communicated, and controlling the first water inlet pipe to be disconnected when the water inlet finishing condition is reached;

controlling the stirring device to start, controlling the liquid pumping device to start, and starting the spray head to spray;

10. The control method of a washing machine according to claim 9, wherein the condition of reaching the end of spraying is: and reaching the preset spraying time, or the flow of the spray head is smaller than the preset flow, or the water level of the liquid storage tank reaches a first preset water level.

11. The control method of a washing machine as claimed in claim 9, wherein the inner tub is further controlled to rotate at a second rotation speed during the spraying process of the spray head, and the first rotation speed is greater than or equal to the second rotation speed.

12. The control method of a washing machine according to claim 9, wherein the condition for finishing the water inflow is that a preset water inflow time is reached, or that the water level of the reservoir reaches a second preset water level.