CN116122020A - Drainage method for household appliance device - Google Patents

Drainage method for household appliance device Download PDF

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Publication number
CN116122020A
CN116122020A CN202111341831.1A CN202111341831A CN116122020A CN 116122020 A CN116122020 A CN 116122020A CN 202111341831 A CN202111341831 A CN 202111341831A CN 116122020 A CN116122020 A CN 116122020A
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CN
China
Prior art keywords
water
foam
storage container
program
defoaming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111341831.1A
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Chinese (zh)
Inventor
杨松杰
周江炯
厉华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Appliances Washing Machine Hangzhou Co Ltd
Panasonic Appliances China Co Ltd
Original Assignee
Panasonic Appliances Washing Machine Hangzhou Co Ltd
Panasonic Appliances China Co Ltd
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Publication date
Application filed by Panasonic Appliances Washing Machine Hangzhou Co Ltd, Panasonic Appliances China Co Ltd filed Critical Panasonic Appliances Washing Machine Hangzhou Co Ltd
Priority to CN202111341831.1A priority Critical patent/CN116122020A/en
Publication of CN116122020A publication Critical patent/CN116122020A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0031—Water discharge phases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F18/00—Washing machines having receptacles, stationary for washing purposes, and having further drying means 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/06—Arrangements for preventing or destroying scum
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
    • D06F49/08—Liquid discharge arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

The invention provides a drainage method of a household appliance device, comprising the following steps: a water inlet process, in which the washing water is introduced into the water storage container from the washing water inlet under the condition that the water outlet is closed; a drain process in which a drain opening is opened to drain the washing water in the water storage container; and a defoaming program in which foam in the water storage container is removed, the defoaming program including a first defoaming program and a second defoaming program, a water level detection step being performed after the first defoaming program is performed, in which the second defoaming program is performed when the washing water and the foam are not detected, and the defoaming program is ended by skipping the second defoaming program when the washing water or the foam is detected. According to the invention, the defoaming effect can be ensured, and the situation of unsmooth drainage can be timely dealt with.

Description

Drainage method for household appliance device
Technical Field
The present invention relates to a method for draining household electrical appliances such as pulsator, agitator, drum-type washing machine, washing dryer, dehydrator, and dishwasher.
Background
Chinese invention publication CN110387716a discloses a drainage method of a home appliance apparatus including a water storage container, the drainage method comprising: a water inlet process in which washing water is introduced into the water storage container from the water inlet with the water outlet closed; a water discharge process in which a water discharge port is opened to discharge water in the water storage container; and a defoaming process in which foam in the water storage container is removed by spraying. The drainage method includes a defoaming procedure, so that the adverse effect of the foam can be alleviated.
However, in the defoaming program of the above-described water drainage method, the water level in the water storage container is detected in real time by the water level detection device. In the case of more foam in the water reservoir, the following possibilities exist: the defoaming process by spraying is started to trigger the water level detection device by foam, and then the defoaming process is terminated and the water discharge process is switched again. In such a case, the spraying time is extremely short, and even the spraying is not performed at all, which may result in insufficient defoaming.
In the above-described drainage method, the drainage of the water storage container is not smooth due to a malfunction of the drain valve, clogging of the drain pipe, or the like. In such a case, if the spray defoaming is continued, the water level in the water storage container may excessively rise due to the spray water, and the washing water may overflow from the water storage container or foam may enter the air pump.
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made in view of the above-described situation, and an object of the present invention is to provide a drainage method of a household electrical appliance apparatus capable of timely coping with a situation where drainage is not smooth while ensuring a defoaming effect.
Solution for solving the problem
In order to achieve the above object, a first aspect of the present invention provides a drainage method of a home appliance apparatus including a water storage container formed with a washing water inlet for introducing washing water into the water storage container and a drainage outlet for draining the washing water in the water storage container, the drainage method of the home appliance apparatus comprising: a water inlet process in which washing water is introduced into the water storage container from the washing water inlet with the water outlet closed; a drain process in which the drain port is opened to drain the washing water in the water storage container; and a defoaming program in which foam in the water storage container is removed, the defoaming program including a first defoaming program and a second defoaming program, a water level detection step being performed after the first defoaming program is performed, the second defoaming program being performed when wash water and foam are not detected in the water level detection step, and the defoaming program being ended by skipping the second defoaming program when wash water or foam is detected.
According to the first aspect, the water level detection step is performed between the first defoaming program and the second defoaming program, thereby, the situation that the water level detection device is triggered by foam immediately after the defoaming program starts can be avoided, the execution time of the defoaming program can be sufficiently ensured, and the defoaming effect can be ensured. In addition, in the water level detection step, when the washing water or the foam is detected, the second defoaming program is skipped and the defoaming program is ended, so that when the drainage is not smooth due to the fault of the drainage valve or the blockage of the drainage pipeline, the defoaming program can be ended as soon as possible, and the situation that the water level in the water storage container excessively rises due to the spray water, and the washing water overflows or the foam enters the air pump can be avoided. In addition, by ending the defoaming program as early as possible and switching to the subsequent error reporting program, it is possible to early report to the user the failure of the drain valve or the clogging of the drain line.
The second technical scheme is that, on the basis of the drainage method of the household appliance apparatus of the first technical scheme, the water storage container is further provided with a water level detection device, the water level detection device is used for detecting whether the water level in the water storage container reaches a preset position, and in the water level detection step, the water level detection device is used for detecting washing water or foam in the water storage container.
According to the second technical scheme, the water level detection step can be reliably executed, and then the defoaming effect can be ensured and the situation of unsmooth drainage can be timely dealt with.
A third technical means is the household appliance apparatus of the second technical means, wherein the water level detection device includes two detection electrodes, and the detection electrode is configured to detect the washing water or the foam when the two detection electrodes are connected, and the detection electrode is configured to detect no washing water or foam when the two detection electrodes are not connected.
According to the third technical means, the water level detection step can be performed with a simple structure.
A fourth aspect is the household appliance apparatus of the first aspect, wherein the water level in the water storage container is not detected in the first defoaming program and the second defoaming program.
According to the fourth technical scheme, the situation that the water level detection device is triggered by foam just at the beginning of the defoaming program is avoided, and the defoaming effect can be ensured more reliably.
A fifth technical means is the household appliance apparatus of the first technical means, wherein after the first defoaming program is executed, a standby program is executed, and then the water level detection step is executed.
According to the fifth technical scheme, the water level detection step can be executed after the states of the washing water and foam in the water storage container are stable, so that the situation of false detection is avoided.
A sixth technical means is the household appliance apparatus of the first technical means, wherein the water discharge port is kept open during the defoaming process.
According to the sixth technical means, drainage can be performed also in the defoaming process, which is advantageous in shortening the duration of the entire dehydration process, and thus shortening the operating time of the home appliance device.
A seventh technical means is the household appliance apparatus of the first technical means, wherein the first defoaming program and/or the second defoaming program includes a foam thinning step for scattering the foam in the water storage container to a smaller foam, and wherein the foam is sprayed with water and/or stirred to be scattered.
According to the seventh technical scheme, foam in the water storage container can be reliably scattered and defoamed through the foam refining step, and the defoaming effect is guaranteed.
An eighth technical means is the household appliance apparatus of the seventh technical means, wherein the first defoaming program and/or the second defoaming program includes a foam-rolling step for forming a rolling water flow in the water storage container to roll foam into the washing water stored in the water storage container, and wherein in the foam-rolling step, a water flow flowing into the water storage container along a side wall of the water storage container and/or the washing water stored in the water storage container is/are stirred to form the rolling water flow.
According to the eighth aspect, foam can be reliably sucked into the washing water stored in the water storage container by the foam sucking step to perform defoaming, which is advantageous in ensuring the defoaming effect.
A ninth technical means is the household electrical appliance apparatus of the eighth technical means, wherein the household electrical appliance apparatus further comprises a spray water inlet, and the spray water inlet is capable of supplying spray water into the water storage container when opened, so as to break up foam and/or form the tumbling water flow.
According to the ninth technical means, the defoaming program can be executed by a simple structure.
A tenth technical means is the household appliance apparatus of the third technical means, wherein the water discharge program includes a first water discharge program and a second water discharge program, and in the water inlet program, when the water level detection device detects wash water or foam, the wash water inlet is closed, the first water discharge program is switched, the defoaming program is executed, and then the second water discharge program is executed.
According to the tenth aspect, the first water discharge program and the second water discharge program are executed before and after the defoaming program, respectively, so that the washing water and the foam in the water storage container can be reliably discharged.
An eleventh technical means is the household appliance apparatus of the tenth technical means, wherein in the water level detection step, when the water level detection means detects the washing water or the foam, the second defoaming program is skipped and the second draining program is switched.
According to the eleventh technical means, it is possible to cope with the situation in time when the discharge failure is predicted in the water level detection step.
A twelfth technical means is the household appliance apparatus of the tenth technical means, wherein in the first drain program and/or the second drain program, it is determined whether or not the voltage between the two detection electrodes is greater than a preset voltage value after a certain time has elapsed since the first drain program or the second drain program was started, the first drain program or the second drain program is continued to be executed when the voltage between the two detection electrodes is greater than the preset voltage value, and when the voltage between the two detection electrodes is not greater than the preset voltage value, an error reporting program is executed, the preset voltage value being set based on the voltage value between the two detection electrodes when switching from the water inlet program to the first drain program.
According to the twelfth aspect, a malfunction of the drain valve or a blockage of the drain line can be detected early, and a report can be made to the user.
A thirteenth technical means is the household electrical appliance apparatus of any one of the first to the twelfth technical means, wherein the household electrical appliance apparatus is a laundry treatment apparatus, the laundry treatment apparatus further comprising: a laundry treating tub having a bottomed tubular shape for accommodating laundry; a laundry treating tub seal for sealing the laundry treating tub; and an air pump having a negative pressure suction function, communicating with the laundry treating tub through a dewatering pipe, for evacuating the laundry treating tub during dewatering, wherein the water storage container is provided in the dewatering pipe and between the laundry treating tub and the air pump, and performing a drainage method of the home appliance apparatus during a dewatering process of the laundry treating apparatus.
According to the thirteenth aspect, the excellent effect of the present invention is more advantageously achieved by adopting the drainage method of the home appliance apparatus of the present invention in the dehydration process of the laundry treating apparatus.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a drainage method of a household electrical appliance apparatus capable of ensuring a defoaming effect and timely coping with a situation of unsmooth drainage can be provided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of a water inlet process of a water discharging method of a home appliance apparatus of the present invention.
Fig. 2 is a schematic view of a drainage program of a drainage method of the home appliance apparatus of the present invention.
Fig. 3 is a schematic view of a defoaming program of a drainage method of the home appliance apparatus of the present invention.
Fig. 4 is a block diagram showing the structure of the foam removing apparatus of the present invention.
Fig. 5 is an action diagram showing a first example of the foam removing apparatus of the present invention.
Fig. 6 is a schematic structural view showing a first example of the foam removing apparatus of the present invention.
Fig. 7 is another action diagram showing a first example of the foam removing apparatus of the present invention.
Fig. 8 is an action diagram showing a second example of the foam removing apparatus of the present invention.
Fig. 9 is an action diagram showing a third example of the foam removing apparatus of the present invention.
Fig. 10 is an action diagram showing a fourth example of the foam removing apparatus of the present invention.
Fig. 11 is a schematic structural view showing a fourth example of the foam removing apparatus of the present invention.
Fig. 12 is a flowchart showing the drainage method of the present invention.
Fig. 13 is a flowchart showing one specific example of the drainage method of the present invention.
Description of the reference numerals
10: a laundry treating tub; 11: a cover; 12: a laundry treating tub seal; 13: cleaning a water inlet valve; 14: an air valve; 15: a water removing port; 16: clothing items; 17: washing water in the tank; 20: an air pump; 21: a dewatering line; 22: a first dewatering line; 23: a second dewatering line; 30: a water storage container; 31: a washing water inlet; 32: spraying a water inlet; 33: spraying water inlet valve; 34: spraying a water inlet pipeline; 35: an air outlet; 36: a water outlet; 37: a drainage pipeline; 38: a drain valve; 41: washing water in the container; 42: foaming; 50: a water level detecting device; 51: a first detection electrode; 52: a second detection electrode; 60: a foam removal device; 61: a foam refining device; 62: a foam rolling-in device; 70: a spraying device; 71: a bottom plate; 72: a baffle; 73: a first hole; 74: a second hole; 75: spraying water flow; 76: a side water flow; 77: tumbling the water flow; 78: rotating the blades; 79: a rotating shaft; 81: rotating the blades; 82: an electric motor.
Detailed Description
Next, a specific embodiment of the present invention will be described with reference to the drawings.
As an example of a home appliance apparatus to which the drainage method of the home appliance apparatus of the present invention is applied, fig. 1 to 3 show a washing machine in which laundry can be washed, rinsed, dehydrated, and the like. It will be appreciated by those skilled in the art that the present invention is applicable to laundry treatment apparatuses such as pulsator, agitator, drum-type washing machines, washing and drying machines, and dehydrators. In addition, the invention can be applied to other household appliances such as dish washing machines and the like. In other words, the present invention can be applied to any household electrical appliance apparatus that includes a water storage container formed with a washing water inlet and a water outlet and that requires water to be drained from the water storage container. As a typical structure, for example, a pressure washing machine as disclosed in CN108884621a is available.
As shown in fig. 1 to 3, a suction dehydrating system is employed in the washing machine. Hereinafter, the description of the relevant parts of the suction and dehydration system will be mainly omitted, and the description of the other parts of the washing machine will be omitted. The structure of the other parts of the washing machine may be arbitrarily constructed as known in the art.
As shown in fig. 1, the washing machine may mainly include a laundry treating tub 10, a laundry treating tub seal 12, an air pump 20, and a water storage container 30. The washing machine further includes a control unit, not shown, for controlling the operation of the washing machine.
Wherein the air pump 20 communicates with the laundry treating tub 10 via a water dehydrating pipe 21 composed of a first dehydrating pipe 22 and a second dehydrating pipe 23. The water storage container 30 is provided in the dewatering line 21 and is located between the laundry treating tub 10 and the air pump 20.
The laundry treatment tub 10 may be formed in a bottomed cylinder (for example, a bottomed cylinder, a bottomed square cylinder, or a bottomed polygonal cylinder) having an upper end opening, that is, in the present application, unless otherwise specified, the "cylinder" is not limited to a cylinder, but includes a square cylinder, a polygonal cylinder, and the like, and accommodates laundry. In use, the laundry 16 in the laundry treatment tub 10 is washed and rinsed by driving the laundry treatment tub 10 to rotate by a motor, not shown. The laundry treating tub 10 is also in communication with a pipe provided with a wash water inlet valve 13 and an air valve 14, which are opened and closed by a control unit, respectively. The wash water inlet valve 13 may be connected to a tap of tap water for home use, or the like, and when the wash water inlet valve 13 is opened, water may be supplied into the laundry treatment tank 10. The air valve 14 may be in communication with the atmosphere, and when the air valve 14 is opened, air may be supplied into the laundry treating tub 10 to increase the air pressure in the laundry treating tub 10. A dehydration opening 15 communicating with the second dehydration pipe 23 is further provided at the bottom of the laundry treatment tank 10, and the washing water in the laundry treatment tank 10 can be injected into the water storage container 30 through the dehydration opening 15, the second dehydration pipe 23, and a washing water inlet 31 of the water storage container 30 described later.
The washing machine further includes a cover 11, which is mounted to a top frame of the washing machine and is rotatable about one end as a base point, so as to open and close an upper end opening of the laundry treating tub 10, for a user to put laundry into the laundry treating tub 10 or take out washed laundry from the laundry treating tub 10.
The laundry treatment tank seal 12 may be attached to the cover 11 at a position closer to the laundry treatment tank 10, and may be formed of a material such as a resin capable of elastic deformation, having a substantially disk shape similar to the shape of the cover 11 or having a central portion of the substantially disk recessed toward the bottom of the laundry treatment tank 10, so as to seal the laundry treatment tank 10. In a state where the upper end opening of the laundry treating tub 10 is closed by the cover 11, the outer peripheral edge of the laundry treating tub seal 12 is hermetically sandwiched between the cover 11 and the upper end opening of the laundry treating tub 10, thereby forming a closed space in the laundry treating tub 10. Further, the side of the laundry treating tub seal 12 opposite to the laundry treating tub 10 is in communication with the atmosphere through a slit or opening or the like in the cover 11.
The air pump 20 may be a negative pressure pump having a negative pressure suction function, and communicates with the laundry treating tub 10 through a dehydrating pipe 21 for evacuating the inside of the laundry treating tub 10 during dehydration.
The water storage container 30 may be provided with a washing water inlet 31, an air outlet 35, and a water outlet 36. The washing water inlet 31 is located at an upper portion of the water storage container 30, communicates with the laundry treating tub 10 via the second dehydrating pipe 23 and the dehydrating port 15 at the bottom of the laundry treating tub 10, and guides the washing water into the water storage container 30. The air outlet 35 is located at the upper portion of the water storage container 30 and communicates with the air pump 20 via the first dehydrating pipe 22. A drain port 36 is provided at the bottom of the water storage container 30, and communicates with a drain valve 38 via a drain line 37 for draining the washing water in the water storage container 30.
In the water storage container 30, gas enters from the washing water inlet 31 and is discharged through the gas outlet 35 and the first water discharge line 22, and washing water enters from the washing water inlet 31 and is accumulated in the lower portion of the water storage container 30 due to gravity, thereby achieving gas-liquid separation. The washing water accumulated in the water storage container 30 may be finally discharged to the outside of the washing machine through the drain port 36, the drain line 37, and the drain valve 38.
In this example, the drain valve 38 has a structure that becomes airtight when closed to hermetically isolate the inside of the dehydration system from the atmosphere when the dehydration system is suctioned. However, the present invention is not limited thereto. Alternatively, when the drain mode of the water storage container 30 is the upper drain mode, that is, the water storage container 30 drains to a higher position, the drain valve 38 may be replaced with a normal drain pump, but a check valve needs to be provided on the drain line 37 upstream or downstream of the drain pump. Preferably, the check valve is disposed upstream of the drain pump. The one-way valve can realize sealing of gas and washing water. The one-way valve is conductive in a direction from the water reservoir 30 toward the drain pump and is non-conductive in the opposite direction. When the water is sucked and dehydrated, the one-way valve is automatically closed under the action of negative pressure, so that airtight isolation between the water storage container 30 and the atmosphere is realized. When the dehydration is completed, the negative pressure in the water storage container 30 disappears, and the one-way valve is automatically opened under the action of the gravity of the washing water 41 in the container in the water storage container 30, so that the communication between the water storage container 30 and the drain pump is realized. In addition, a valve body whose opening and closing are controlled by a control unit may be used instead of the check valve.
In addition, the water storage container 30 may be further provided with a water level detecting means 50 for detecting whether the water level in the water storage container 30 reaches a predetermined position. The water level detecting means 50 may include two detection electrodes, i.e., a first detection electrode 51 and a second detection electrode 52, mounted to a side wall of the water storage container 30. In the water level detection device 50, the first detection electrode 51 is attached to the side wall of the water storage container 30 near the bottom, and the second detection electrode 52 is attached to the side wall of the water storage container 30 near the upper end. When the water level in the water storage container 30 reaches the installation position of the second detection electrode 52, the first detection electrode 51 and the second detection electrode 52 are electrically connected to each other by the water. Accordingly, the control unit can detect whether the water level in the water reservoir 30 reaches a predetermined position by detecting whether or not conduction between the first detection electrode 51 and the second detection electrode 52 is established. That is, the mounting position of the second detection electrode 52 corresponds to a predetermined position.
In addition, when the bubbles exist in the water storage container 30, even if the water level in the water storage container 30 does not reach the installation position of the second detection electrode 52, if the bubbles floating on the water surface contact the second detection electrode 52, the bubbles can conduct between the first detection electrode 51 and the second detection electrode 52 together with the washing water. Therefore, the water level in the water storage container 30 detected by the water level detecting means 50 does not refer to only the height position reached by the washing water in the water storage container 30, but refers to the height position reached by the bubbles in the water storage container 30 in the case where the bubbles float on the washing water or only the bubbles exist in the water storage container 30. When the two detection electrodes 51, 52 are conducted, it is determined that the washing water or the foam is detected, and when the two detection electrodes 51, 52 are not conducted, it is determined that the washing water or the foam is not detected.
In addition, the washing machine further includes a spraying device 70 as an example of the foam removing device 60 described later. The shower device 70 communicates with the shower water inlet pipe 34 via the shower water inlet 32, and a shower water inlet valve 33 controlled to open and close by a control unit is provided at the shower water inlet pipe 34. The shower inlet valve 33 is connected to a tap of tap water for home use, or the like, and when the shower inlet valve 33 is opened, water can be supplied into the shower device 70. The foam removal apparatus 60 and the shower apparatus 70 will be described in detail later.
A dehydration step of a washing machine having the above-described structure will be described below with reference to fig. 1 to 3, and a drainage method of a household electrical appliance apparatus according to the present invention is applied to the dehydration step. The drainage method of the household appliance device comprises a water inlet program, a drainage program and a defoaming program. Wherein, fig. 1 corresponds to a water inlet process, fig. 2 corresponds to a water discharge process, and fig. 3 corresponds to a defoaming process.
As shown in fig. 1, the washing machine performs a water inlet process in which washing water is introduced into the water storage container 30 from the washing water inlet 31 with the water outlet 36 closed by the water discharge valve 38.
Specifically, when the washing machine completes the washing and rinsing steps and starts the dehydration step, the control unit controls the wash water inlet valve 13, the air valve 14, the shower water inlet valve 33, and the drain valve 38 to be closed. After that, the control unit controls the air pump 20 to start operating. At this time, the laundry treating tub 10 and the water storage container 30 communicate through the second dehydrating pipe 23 to form a closed space together.
With the continuous operation of the air pump 20, air is continuously drawn from the air outlet 35, and the pressures in the laundry treating tub 10 and the water storage container 30 become negative pressures. At this time, the atmospheric pressure received by the outer surface of the laundry treating tub seal 12 is greater than the pressure in the laundry treating tub 10 received by the inner surface, and the laundry treating tub seal 12 is elastically deformed toward the bottom wall of the laundry treating tub 10 along the side wall of the tub-shaped laundry treating tub 10 by the pressure difference, thereby pressing the laundry 16 in the laundry treating tub 10 toward the bottom wall of the laundry treating tub 10, and squeezing out the washing water 17 in the tub. The washing water 17 in the tub enters the second dewatering line 23 together with the air in the laundry treating tub 10 through the dewatering opening 15 of the laundry treating tub 10 by the negative pressure, and flows into the water storage container 30 through the washing water inlet 31.
In the water inlet program, the control unit detects the on-off state between the first detection electrode 51 and the second detection electrode 52 in real time. When the washing water 41 or the foam 42 in the water storage container 30 does not reach the predetermined position, the first detection electrode 51 and the second detection electrode 52 are not conducted, and the air pump 20 is continuously operated. As the height of the washing water 41 or the bubbles 42 in the container in the water container 30 is continuously increased, it is determined that the washing water 41 or the bubbles 42 in the container in the water container 30 reaches a predetermined position when the control unit detects that the first detection electrode 51 and the second detection electrode 52 are electrically connected. At this time, the control unit controls the air pump 20 to stop operating, and starts the water discharge process in the water storage container 30.
As shown in fig. 2, the washing machine performs a drain process in which the drain port 36 is opened to drain the washing water in the water container 30.
Specifically, at the start of the water discharge process, the control unit controls the purge water inlet valve 13, the air pump 20, and the shower water inlet valve 33 to be in a closed state, and controls the air valve 14 and the water discharge valve 38 to be in an open state. At this time, the in-tank washing water 41 in the water storage tank 30 flows out of the washing machine through the drain line 37 and the drain valve 38. Meanwhile, the air valve 14 in the opened state supplements air into the water storage container 30 through the laundry treating tub 10 and the second dehydrating pipe 23, and adjusts the air pressure balance in the water storage container 30, so that the washing water 41 in the water storage container 30 can be smoothly discharged.
Since laundry is generally washed by putting detergent into the laundry treating tub 10, a large amount of foam may be mixed in the tub washing water 17, and a certain amount of detergent may remain in the tub washing water 17. When the mixture of the washing water 17 and the gas in the tub enters the water storage container 30, a part of bubbles are generated again due to the mixing action of the washing water and the gas containing the detergent, and the bubbles (hereinafter, collectively referred to as "bubbles 42") sucked from the laundry treatment tub 10 float on the upper side of the washing water 41 in the container stored in the water storage container 30. As shown in fig. 3, these bubbles 42 may remain in the water storage container 30 even after the water discharge process is completed, and thus may be difficult to smoothly discharge.
If the water inflow process is directly performed again after the water discharge process is completed, the foam 42 remaining in the water storage container 30 rapidly rises to the position of the second detection electrode 52 as the washing water is re-introduced into the water storage container 30, and the control unit determines that the water level in the water storage container 30 reaches a predetermined position, and then enters the water discharge process again. This will result in the water intake and discharge procedures switching at abnormally high frequencies, which is time and energy consuming.
To avoid this, in the present invention, a defoaming process is performed after the completion of the drainage process, in which foam 42 in the water storage container 30 is removed, thereby reducing the adverse effect of the foam.
As a specific example of the defoaming process, as shown in fig. 3, the shower water inlet valve 33 is opened, water is supplied into the shower device 70 via the shower water inlet line 34 and the shower water inlet 32, and the supplied water falls from the shower device 70 to form a shower water flow 75, thereby removing the foam 42 remaining in the water storage container 30. During this time, the drain valve 38 is opened, while the drain port 36 is kept open, and water flows out to the outside of the washing machine via the drain line 37.
The foam removing apparatus 60 as the present invention will be described in detail below.
As shown in fig. 4, the washing machine includes a foam removing device 60 for removing foam in the water storage container 30. The bubble removal means 60 may include bubble refining means 61 for breaking up the bubbles 42 in the water storage container 30 to become smaller bubbles and bubble entrainment means 62 for forming a tumbling water flow in the water storage container 30 to entrain the bubbles 42 into the wash water stored in the water storage container 30. Various examples of the foam removal apparatus 60 will be described in detail below with reference to fig. 5-11. In which the direction of water flow is shown by arrows.
Fig. 5 to 7 show a foam removal apparatus 60 of a first example. In this example, the foam removal apparatus 60 includes a spray apparatus 70 disposed at the top of the water reservoir 30. The spray device 70 serves as a foam refining device 61 by creating a spray water flow 75 to break up foam and further serves as a foam entrainment device 62 by creating a side water flow 76 to create a tumbling water flow 77 within the water reservoir 30.
The spray device 70 may be formed with a spray water inlet 32 for introducing spray water into the spray device 70, and a first hole 73 and a plurality of second holes 74 communicating with the spray water inlet 32 and provided to the bottom plate 71 opposite to the water storage container 30.
Referring to fig. 1, the spray water inlet 32 communicates with a spray water inlet pipe 34 provided with a spray water inlet valve 33, and when the spray water inlet valve 33 is opened, water can be supplied into the spray device 70 via the spray water inlet pipe 34 and the spray water inlet 32, and spray water can be supplied into the water storage container 30 to break up foam and/or form a tumbling water flow. As shown in fig. 5 and 6, the spray water inlet 32 may be formed at a side of the spray device 70 of the box-like structure. However, the position of the shower water inlet 32 is not limited thereto, and may be formed at any position.
The first hole 73 is provided at a position of the bottom plate 71 near the side of the water storage container 30, and water falling from the first hole 73 flows into the water storage container 30 along the side of the water storage container 30, forming a side water flow 76. As shown in fig. 6, the first hole 73 has a long strip shape, and the opening area is larger than that of the single second hole 74. The first hole 73 is provided adjacent to the shower water inlet 32, and the drain opening 36 of the water reservoir 30 is provided on the opposite side (right side in fig. 5) to the shower water inlet 32 and the first hole 73 (left side in fig. 5), so that the side water flow 76 can smoothly flow out from the drain opening 36.
The plurality of second holes 74 are distributed over a large area of the bottom plate 71 in a circular shape, and an opening area of a single second hole 74 is smaller than an opening area of the first hole 73. The water flowing into the water reservoir 30 from the second hole 74 forms a shower flow 75. In order to achieve a more uniform spray throughout the water reservoir 30, the density of the second holes 74 may be configured to increase away from the spray water inlet 32 (toward the right in fig. 6), as shown in fig. 6.
An upwardly projecting baffle 72 is also provided at a position of the bottom plate 71 between the first hole 73 and the second hole 74. The baffle 72 serves to block water flowing into the spray device 70 from the spray water inlet 32 to avoid that water passes directly over the first aperture 73 causing an excessive amount of side water flow 76. By providing the baffle plate 72, a part of the shower water flows into the first holes 73, and another part of the shower water enters the interior of the shower device 70 from both ends and upper side positions of the baffle plate 72 and flows into the second holes 74.
The number, structure, position, and the like of the first holes 73, the second holes 74, the baffles 72 are not limited to the above-described examples, and any suitable arrangement may be made. Alternatively, the first hole 73 may be provided on the opposite side of the spray water inlet 32, i.e., on the right side of fig. 5, and the drain outlet 36 of the water reservoir 30 may be provided on the side of the spray water inlet 32, i.e., on the left side of fig. 5. Preferably, in order to allow the side water flow 76 to smoothly flow out, the first hole 73 may be provided at a position near the side of the water storage container 30 opposite to the side of the water outlet 36. Alternatively, the second holes 74 may be irregularly arranged, or may include a plurality of second holes 74 having different sizes. When the second holes 74 include a plurality of second holes 74 having different sizes, it may be configured that the opening area of the second holes 74 increases as being distant from the shower water inlet 32.
As shown in fig. 5, when the defoaming program is required, the shower inlet valve 33 is opened to supply water into the shower device 70, and the side water flow 76 and the shower water flow 75 are formed through the first hole 73 and the second hole 74, respectively. The spray water flow 75 will spray onto the foam 42, the foam 42 will be broken up under the action of the spray water flow 75, and the larger foam will become a number of fine foam. The side water flow 76 enters the bottom of the water reservoir 30 along the side wall of the water reservoir 30, creating a tumbling water flow 77. The dispersed foam is caught in the water 14 stored in the water storage container 30 by the tumbling water flow 77, and is then discharged from the water discharge line 37 through the water discharge valve 38.
When the water 14 stored in the water storage container 30 is small, as shown in fig. 7, the side water flow 76 flows along the bottom of the water storage container 30, and the foam remaining in the water storage container 30 is washed away and discharged from the drain line 37.
As described above, the bubbles in the water storage container 30 can be effectively removed by the combined action of the shower water flow 75 and the side water flow 76 formed by the shower device 70, and adverse effects of the bubbles can be avoided.
Fig. 8 shows a foam removal apparatus 60 of a second example. In this example, a rotary vane 78 rotatable about an axis parallel to the horizontal plane is provided in the water storage container 30 as the foam entrainment device 62, instead of the first hole 73 provided in the bottom plate 71 of the shower device 70 in the first example to form a side water flow structure. The remaining components of the second example are the same as or similar to those of the first example, and the same reference numerals are used to designate the same or similar components as those of the first example, and a description thereof will not be repeated.
As shown in fig. 8, a rotary vane 78 is provided in the water storage container 30, and a rotary shaft 79 of the rotary vane 78 is fixed to a side surface of the water storage container 30 and parallel to a horizontal plane, and the rotary vane 78 is rotatable around the rotary shaft 79. It should be noted that the parallelism described herein is not limited to the strict parallelism, but includes the case where the angle is made with respect to the horizontal plane but does not affect the generation of the tumble flow 77. Further, in this example, the rotating blades 78 are driven to rotate by the shower flow 75. However, the present invention is not limited thereto, and may be configured to drive the rotation of the rotation blade 78 by using other power sources or a motor provided separately for the rotation blade 78.
As shown in fig. 8, when the defoaming program is required, the shower inlet valve 33 is opened to supply water into the shower device 70, and a shower water flow 75 is formed through the second hole 74. A portion of the spray stream 75 is sprayed onto the foam 42, and the foam 42 is broken up by the spray stream 75, and the larger foam becomes a plurality of fine foam. Another portion of the spray stream 75 is sprayed onto the rotating blades 78 causing the rotating blades 78 to begin rotating about the axis of rotation 79 and creating a tumbling stream 77. The dispersed foam is caught in the water 14 stored in the water storage container 30 by the tumbling water flow 77, and is then discharged from the water discharge line 37 through the water discharge valve 38.
As described above, the bubbles in the water storage container 30 can be effectively removed by the combined action of the shower water flow 75 formed by the shower device 70 and the tumbling water flow 77 formed by the rotating blades 78, and the adverse effect of the bubbles can be avoided.
Fig. 9 shows a foam removal apparatus 60 of a third example. In this example, the first example and the second example are combined, that is, the first hole 73 and the rotary vane 78 are provided at the same time, and the rolling water flow 77 is formed by rotation of the side water flow 76 and the rotary vane 78, so that the two rolling water flows 77 are simultaneously applied. The remaining components of the third example are the same as or similar to those of the first and second examples, and the same reference numerals are used to designate the same or similar components as those of the first and second examples, and a description thereof will not be repeated.
As shown in fig. 9, a first hole 73 is provided at a position of the bottom plate 71 of the shower device 70 near the side of the water storage container 30, and a rotating vane 78 rotatable about an axis parallel to the horizontal plane is also provided in the water storage container 30. Thus, while the tumble flow 77 is formed by the side water flow 76 formed by the first hole 73, the tumble flow 77 is formed by the rotation of the rotating blade 78 around the rotating shaft 79. The foam broken up by the shower flow 75 is caught in the water 14 stored in the water reservoir 30 by the combined action of the two tumbling flows 77, and is then discharged from the drain line 37 via the drain valve 38.
As described above, the bubbles in the water storage container 30 can be more effectively removed by the combined action of the tumbling water flow 77 formed by the first holes 73 and the rotating blades 78, and the adverse effect of the bubbles can be avoided.
Fig. 10 to 11 show a foam removal apparatus 60 of a fourth example. In this example, a rotary blade 81 rotatable about an axis perpendicular to the horizontal plane is provided in the water storage container 30 to serve as the foam refining means 61, instead of the structure in which the second holes 74 are provided in the shower device 70 to form the shower water flow 75 in the first to third examples. The remaining components of the fourth example are the same as or similar to those of the first to third examples, and the same reference numerals are used to designate the same or similar components as those of the first to third examples, and a description thereof will not be repeated.
As shown in fig. 10, in comparison with the shower device shown in fig. 5, the second hole 74 and the baffle 72 are not formed in the bottom plate 71 of the shower device 70, but only the first hole 73 remains, and water falling from the first hole 73 flows into the water storage container 30 along the side of the water storage container 30, forming a side water flow 76. The side water flow 76 enters the bottom of the water reservoir 30 along the side wall of the water reservoir 30, creating a tumbling water flow 77.
Further, a rotary blade 81 is provided in the water storage container 30 so as to be rotatable about an axis perpendicular to the horizontal plane, and the rotary blade 81 is rotated by a motor 82 provided outside the water storage container 30. The vertical direction is not limited to the strict vertical direction, and includes a case where the foam is broken up while being at a certain angle with respect to the vertical direction. Further, in this example, the rotation blade 81 is driven to rotate by a motor 82 provided separately. However, the present invention is not limited thereto and may be configured to utilize the side stream 76 or other power source to drive the rotation of the rotary blade 81.
As shown in fig. 11, one example of the specific structure of the rotary blade 81 is that each blade is formed in a comb-tooth shape, teeth are formed on both upper and lower sides, the teeth on the upper side are formed corresponding to the teeth on the lower side, and the length of the teeth on the upper side is shorter than the length of the teeth on the lower side. Although fig. 11 shows four blades and a case where each blade is formed with four teeth, the number of blades and teeth is not limited thereto, but may be any number other than that. Also, the shape of the rotating blade 81 is not limited, and the length of the teeth on the upper side may be longer than the length of the teeth on the lower side, or the teeth may be parallel to the bottom surface of the water storage container 30.
As shown in fig. 10, when the defoaming program is required, the motor 82 is started to rotate the rotary blade 81. At the same time, the shower inlet valve 33 is opened to supply water into the shower device 70, and a side water flow 76 is formed through the first hole 73. The rotating blades 81 rotate around an axis perpendicular to the horizontal plane, agitate the foam 42, and break up the foam 42. The dispersed foam is caught in the water 14 stored in the water storage container 30 by the tumbling water flow 77, and is then discharged from the water discharge line 37 through the water discharge valve 38.
As described above, the foam in the water storage container 30 can be effectively removed by the combined action of the side water flow 76 and the rotating blades 81 formed by the shower device 70, and the adverse effect of the foam can be avoided.
In the above example, the foam removal apparatus 60 includes both the foam thinning apparatus 61 and the foam entrainment apparatus 62. However, the present invention is not limited thereto, and the foam removing device 60 may include only the foam thinning device 61 or the foam rolling-in device 62. As an example, only the shower 70 shown in fig. 8 or the rotating blade 81 shown in fig. 10 may be provided as the foam thinning apparatus 61, or only the shower 70 shown in fig. 10 or the rotating blade 78 shown in fig. 9 may be provided as the foam entraining apparatus 62. In this case, although the foam removal rate is reduced as compared with the first to fourth examples, the foam in the water storage container 30 can be effectively removed as well.
Further, alternatively, the foam removing apparatus 60 may also include a rotating blade rotatable about an axis having an angle of less than 90 degrees with respect to the horizontal plane. The rotating blades can stir foam and form tumbling water flow when rotating.
Further, in the above example, the shower device 70 is formed in a box-like structure. However, the present invention is not limited thereto, and the shower device 70 may be formed in other structures. For example, the shower 70 may be formed as a tubular structure with first and second holes formed in the bottom of the tubular structure.
A drainage method of the home appliance apparatus of the present invention will be described in detail with reference to fig. 12 and 13.
The water draining method shown in fig. 12 is started when the washing machine shown in fig. 1 completes the washing and rinsing steps and starts the dehydrating step. As shown in fig. 12, the drainage method of the home appliance apparatus of the present invention may include a water intake process S1, a first drainage process S2, a defoaming process S3, and a second drainage process S4. That is, the drainage program includes a first drainage program S2 and a second drainage program S4. In the water inlet process S1, when the water level detecting device 50 detects the washing water 41 or the bubbles 42, the air pump 20 is stopped to close the washing water inlet 31, and is switched to the first water discharge process S2, and then the defoaming process S3 is performed, and then the second water discharge process S4 is performed.
In the water inlet process S1, the washing water is introduced into the water storage container 30 from the washing water inlet 31 with the water outlet 36 of the water storage container 30 closed.
In the first drainage process S2, the drain port 36 of the water storage container 30 is opened to drain the washing water in the water storage container 30.
In the defoaming process S3, foam in the water storage container 30 is removed by the foam removing apparatus 60. The defoaming program S3 may include a first defoaming program S31, a standby program S32, a water level detection step S33, and a second defoaming program S34.
The first and/or second defoaming programs S31 and S34 may include at least one of a foam refining step for scattering the foam 42 in the water storage container 30 to become smaller foam and a foam entrainment step for forming a tumbling water flow 77 in the water storage container 30 to entrain the foam into the washing water stored in the water storage container 30, respectively. In the foam refining step, the foam refining apparatus 61 breaks up the foam by spraying water on the foam 42 and/or stirring the foam. In the bubble entrainment step, the bubble entrainment device 62 forms a water flow into the water reservoir 30 along the side wall of the water reservoir 30 and/or agitates the water stored in the water reservoir 30 to form a tumbling water flow 77.
In the first and second defoaming programs S31 and S34, the water level in the water storage container 30 is not detected. After the first defoaming program S31 is executed, the standby program S32 is executed, followed by the water level detection step S33. After the first defoaming program S31 is executed, the water level detection step S33 may be executed without executing the standby program S32. In the water level detection step S33, the washing water 41 or the foam 42 in the water storage container 30 is detected by the water level detection device 50. In the water level detection step S33, a second defoaming process S34 is performed when the washing water 41 and the bubbles 42 are not detected; when the washing water 41 or the foam 42 is detected, the second defoaming process S34 is skipped to end the defoaming process S3, and the second drainage process S4 is switched.
In the second drain process S4, the drain port 36 of the water storage container 30 is opened to drain the washing water in the water storage container 30. After the completion of the second drainage process S4, if the dehydration process is not completed yet, it may be returned to the water intake process S1 again.
A specific example of a drainage method as a home appliance apparatus of the present invention will be described in detail with reference to fig. 13. This particular example is one implementation of the drainage method described above in fig. 12. The drainage method is implemented by causing a control unit in the washing machine shown in fig. 1 to 3 to execute a program stored in advance. Wherein steps S101 to S106 correspond to the water intake program S1 in fig. 12, steps S201 to S207 correspond to the first water discharge program S2 in fig. 12, steps S311 to S344 correspond to the defoaming program S3 in fig. 12, steps S311 to S314 correspond to the first defoaming program S31 in fig. 12, steps S321 to S322 correspond to the standby program S32 in fig. 12, step S331 corresponds to the water level detection step S33 in fig. 12, steps S341 to S344 correspond to the second water discharge program S34 in fig. 12, and steps S401 to S408 correspond to the second water discharge program S4 in fig. 12.
Water inlet program
The water draining method shown in fig. 13 is started when the washing machine shown in fig. 1 completes the washing and rinsing steps and starts the dehydrating step. At this time, the control unit controls the purge inlet valve 13, the air valve 14, the shower inlet valve 33, and the drain valve 38 to be in a closed state. Thereafter, in step S101, the control unit controls the air pump 20 to start operating. In step S102, the control unit starts timing the air pump operation time T0. In step S103, the water level in the water reservoir 30 is detected by the water level detection device 50. When the two detection electrodes 51 and 52 are turned on, it is determined that the washing water 41 or the foam 42 is detected, and the process proceeds to step S105. When the two detection electrodes 51 and 52 are not connected, it is determined that the washing water 41 and the foam 42 are not detected, and the process proceeds to step S104.
In step S104, the control unit determines whether the air pump operation time T0 has accumulated to the set value. When the control unit determines that the air pump operation time T0 reaches the set value, it switches to step S105. When the control unit determines that the air pump operation time T0 has not reached the set value, it returns to step S103 to again detect the water level in the water storage container 30 by the water level detection device 50. That is, when the washing water 41 and the bubbles 42 are not detected in step S103 and the air pump operation time T0 is accumulated in step S104 to not reach the set value, the control unit repeats step S103 and step S104 until the washing water 41 or the bubbles 42 are detected in step S103 or the air pump operation time T0 is accumulated in step S104 to reach the set value. The set value of the air pump operation time T0 used in step S104 may be set by an experiment in advance, and may be set to a time during which all the washing water in the laundry treating tub 10 can be discharged by the continuous operation of the air pump 20 for the time period.
In step S105, the control unit controls the air pump 20 to stop operating, and pauses the timing of the air pump operating time T0 in step S106, and then switches to step S201, starting the first drainage program S2.
First drainage program
In step S201, the control unit opens the drain valve 38, and in step S202, times the first drain time T1 of the drain valve 38. In step S203, the control unit continuously determines whether the first drain time T1 of the drain valve 38 reaches the set value. When the control unit determines that the first drainage time T1 reaches the set value, it switches to step S204. The set value of the first drain time T1 used in step S203 may be set to a short time, for example, about 5 seconds, for which a certain amount of the washing water in the water storage container 30 can be drained.
In step S204, it is determined whether the condition X is satisfied, specifically, whether the voltage between the two detection electrodes 51, 52 is greater than a preset voltage value. When the voltage between the two detection electrodes 51, 52 is greater than the preset voltage value, the condition X is satisfied, and the process shifts to step S206 to continue the first drainage process S2. When the voltage between the two detection electrodes 51, 52 is not greater than the preset voltage value, the condition X is not satisfied, and the process goes to step S205 to execute the error reporting procedure. The preset voltage value is set based on the voltage value between the two detection electrodes 51, 52 when switching from the water inlet process S1 to the first water discharge process S2 (i.e., when conducting between the two detection electrodes 51, 52 in step S103). Although the preset voltage value may be reset each time according to the voltage value between the two detection electrodes 51, 52 at the time of conduction between the two detection electrodes 51, 52 in step S103, it is preferable to set the preset voltage value by a preliminary experiment in order to reduce the risk of system errors. For example, the on-voltage value between the two detection electrodes 51, 52 at the time of conduction between the two detection electrodes 51, 52 may be experimentally determined, and the on-voltage value may be determined as the preset voltage value in step S204. Since drainage is performed for T1 time in steps S201 to S203 before step S204, the voltage between the two detection electrodes 51, 52 in step S204 should be generally greater than a preset voltage value, and condition X is satisfied. However, when the drain valve 38 fails or the drain line 37 is blocked, the washing water 41 in the water reservoir 30 cannot be drained in steps S201 to S203, and the condition X is not satisfied. By determining whether the condition X is satisfied in step S204, it is possible to early find a failure of the drain valve 38 or a blockage of the drain line 37.
In step S206, the control unit starts to time the second drain time T2 of the drain valve 38 while keeping the drain valve 38 open. In step S207, the control unit continuously determines whether the second drain time T2 of the drain valve 38 reaches the set value. When the control unit determines that the second drainage time T2 reaches the set value, it switches to step S311 to start the defoaming process S3. The set value of the second drain time T2 used in step S206 may be set by an experiment in advance, and may be set to a time when all the washing water 41 in the water storage container 30 can be drained by continuously opening the drain valve 38 for the second drain time T2 plus the first drain time T1.
Defoaming program
In step S311, the control unit opens the shower water inlet valve 33, and starts the first defoaming program S31. At this point, the spray device 70 begins to generate the spray water flow 75 and the side water flow 76, as described above, thereby removing the foam 42 from the water reservoir 30. In step S312, the control unit counts the duration of opening of the shower inlet valve 33, i.e., the first defoaming time T3. In step S313, the control unit determines whether the first defoaming time T3 reaches a set value. When the control unit determines that the first defoaming time T3 reaches the set value, it switches to step S314. The set value used in step S313 may be set by a preliminary experiment, and may be set to a time when most of the foam 42 in the water storage container 30 can be removed by continuously opening the shower inlet valve 33 for the first defoaming time T3 and a second defoaming time T5 described later. In step S314, the control unit closes the shower inlet valve 33, ending the first defoaming program S31. During execution of steps S311 to S314 and even the entire defoaming process S3, the drain valve 38 is always opened, while the drain port 36 is kept open.
Thereafter, the control unit switches to step S321 to start the standby program S32. In step S321, the control unit starts to time the standby time T4. In step S322, the control unit continuously determines whether the standby time T4 reaches the set value. When the control unit determines that the standby time T4 reaches the set value, it switches to step S331 to execute the water level detection step S33. The setting value of the standby time T4 used in step S322 may be set by a preliminary experiment, and may be set to a time period for which the state of the washing water 41 and the foam 42 in the water storage container 30 can be stabilized by standing for the time period, for example, 30 seconds.
In step S331, the water level in the water storage container 30 is detected by the water level detection device 50. When the two detection electrodes 51 and 52 are turned on, it is determined that the washing water 41 or the foam 42 is detected, the process proceeds to step S401, and the second drain process S4 is started. When the two detection electrodes 51 and 52 are not turned on, it is determined that the washing water 41 and the foam 42 are not detected, and the process proceeds to step S341, and the second defoaming step S34 is started. By setting in this manner, when the drain valve 38 fails or the drain line 37 is blocked to cause the drain to be blocked, the defoaming program S3 can be terminated as early as possible, and the overflow of the washing water 41 or the entry of the foam 42 into the air pump 20 due to an excessive rise in the water level in the water storage tank 30 caused by shower water can be avoided. This is because, in a normal case, most of the washing water 41 and the foam 42 in the water storage container 30 can be discharged through the first defoaming process S31 and the standby process S32, and if the washing water 41 or the foam 42 can still be detected in step S331, it is estimated that the drain valve 38 is malfunctioning or the drain line 37 is clogged. Further, by ending the defoaming routine S3 as early as possible and switching to the subsequent error reporting routine S404, it is possible to early report to the user a failure of the drain valve 38 or clogging of the drain line 37.
In step S341, the control unit opens the shower inlet valve 33, and starts the second defoaming program S34. At this point, the spray device 70 begins to generate the spray water flow 75 and the side water flow 76, as described above, thereby removing the remaining foam 42 within the water reservoir 30. In step S342, the control unit counts the duration of the opening time of the shower inlet valve 33, that is, the second defoaming time T5. In step S343, the control unit continuously determines whether the second defoaming time T5 reaches the set value. When the control unit determines that the second defoaming time T5 reaches the set value, it switches to step S344. The set value used in step S343 may be set by a preliminary experiment, and may be set to a time when most of the foam 42 in the water storage container 30 can be removed by the continuous opening of the shower inlet valve 33 for the second defoaming time T5 and the first defoaming time T3. The second defoaming time T5 and the first defoaming time T3 may be set equal to each other, or may be set larger than each other. In step S344, the control unit closes the shower water inlet valve 33, ends the second defoaming program S34, and switches to step S401 to start the second drainage program S4.
Second drainage program
In step S401, the control unit counts the first drain time T1 of the drain valve 38 while keeping the drain valve 38 open. In step S402, the control unit continuously determines whether the first drain time T1 of the drain valve 38 reaches the set value. When the control unit determines that the first drainage time T1 reaches the set value, it switches to step S403. The set value of the first drain time T1 used in step S403 may be set to a short time, for example, about 5 seconds, for which a certain amount of the washing water in the water storage container 30 can be drained. The set value of the first drain time T1 used in step S403 may be the same as or different from the set value of the first drain time T1 used in step S203.
In step S403, it is again determined whether the condition X is satisfied, specifically, whether the voltage between the two detection electrodes 51, 52 is greater than a preset voltage value. When the voltage between the two detection electrodes 51, 52 is greater than the preset voltage value, the condition X is satisfied, and the process shifts to step S405, and the second drainage process S4 is continued. When the voltage between the two detection electrodes 51, 52 is not greater than the preset voltage value, the condition X is not satisfied, and the process proceeds to step S404, where the error reporting procedure is executed. The preset voltage value is set based on the voltage value between the two detection electrodes 51, 52 when switching from the water inlet process S1 to the first water discharge process S2 (i.e., when conducting between the two detection electrodes 51, 52 in step S103), and is the same as the preset voltage value used in step S204. By determining whether the condition X is satisfied in step S403, it is possible to detect a failure of the drain valve 38 or a blockage of the drain line 37 as early as possible.
In step S405, the control unit starts to time the second drain time T2 of the drain valve 38 while keeping the drain valve 38 open. In step S406, the control unit continuously determines whether the second drain time T2 of the drain valve 38 reaches the set value. When the control unit determines that the second drain time T2 reaches the set value, it switches to step S407. The set value of the second drain time T2 used in step S406 may be set by an experiment in advance, and may be set to a time when all the washing water 41 in the water storage container 30 can be drained by continuously opening the drain valve 38 for the second drain time T2 plus the first drain time T1. The set value of the second drain time T2 used in step S406 may be the same as or different from the set value of the second drain time T2 used in step S207.
In step S407, the control unit determines whether the air pump operation time T0 has accumulated to the set value. When the control unit determines that the air pump operation time T0 reaches the set value, it switches to step S408. When the control unit determines that the air pump operation time T0 has not reached the set value, the process returns to step S101, and the water inlet process S1 is restarted.
In step S408, the control unit closes the drain valve 38 and ends the entire dehydration process.
The flowchart shown in fig. 13 above is merely an example, and the drainage method of the present invention is not limited thereto.
For example, in the above description, the case where the condition X is determined to be satisfied in both the first drainage program S2 and the second drainage program S4 has been described, but the condition X may be determined to be satisfied only in either the first drainage program S2 or the second drainage program S4.
The present invention has been described above by way of embodiments. However, the present invention is not limited to the embodiment. For example, other embodiments may be used as the embodiments of the present invention, in which the constituent elements described in the present specification are arbitrarily combined and implemented in addition to a plurality of constituent elements. Further, modified examples obtained by applying various modifications to the above-described embodiments, which modifications are conceivable to those skilled in the art, are also included in the present invention within the scope not departing from the gist of the present invention, that is, the meaning expressed by the terms of the claims.

Claims (13)

1. A drainage method of a household appliance device is characterized in that,
the household appliance apparatus includes a water storage container formed with a washing water inlet for introducing washing water into the water storage container and a water outlet for discharging the washing water in the water storage container,
The drainage method of the household appliance device comprises the following steps:
a water inlet process in which washing water is introduced into the water storage container from the washing water inlet with the water outlet closed;
a drain process in which the drain port is opened to drain the washing water in the water storage container; and
a defoaming process in which foam in the water storage container is removed,
the defoaming program includes a first defoaming program and a second defoaming program, and after the first defoaming program is executed, a water level detection step is executed in which the second defoaming program is executed when the washing water and the foam are not detected, and the defoaming program is ended by skipping the second defoaming program when the washing water or the foam is detected.
2. The method for draining a home appliance device according to claim 1, wherein,
the water storage container is also provided with a water level detection device which is used for detecting whether the water level in the water storage container reaches a preset position,
in the water level detection step, the water level detection device is used for detecting the washing water or foam in the water storage container.
3. The method for draining a home appliance device according to claim 2, wherein,
the water level detection device comprises two detection electrodes, when the two detection electrodes are conducted, the detection of the washing water or the foam is judged, and when the two detection electrodes are not conducted, the detection of the washing water or the foam is judged.
4. The method for draining a home appliance device according to claim 1, wherein,
in the first and second defoaming programs, the water level in the water storage container is not detected.
5. The method for draining a home appliance device according to claim 1, wherein,
after the first defoaming program is executed, a standby program is executed, after which the water level detection step is executed.
6. The method for draining a home appliance device according to claim 1, wherein,
during the defoaming procedure, the drain port remains open.
7. The method for draining a home appliance device according to claim 1, wherein,
the first and/or second defoaming process each include a foam refining step for breaking up the foam in the water storage container to become smaller foam,
In the foam refining step, foam is sprayed with water and/or the foam is stirred to break up the foam.
8. The method for draining a home appliance device according to claim 7, wherein,
the first defoaming program and/or the second defoaming program respectively include a foam-entrainment step for forming a tumbling water flow in the water storage container to entrain foam into the washing water stored in the water storage container,
in the foam entrainment step, a water flow flowing into the water storage container along the side wall of the water storage container is formed, and/or washing water stored in the water storage container is stirred to form the tumbling water flow.
9. The method for draining a home appliance device according to claim 8, wherein,
the household appliance device is also provided with a spray water inlet which can supply spray water into the water storage container when being opened so as to break up foam and/or form the tumbling water flow.
10. A method for draining a home appliance device according to claim 3, wherein,
the drainage program includes a first drainage program and a second drainage program,
In the water inlet process, when the water level detecting means detects washing water or foam, the washing water inlet is closed, the first water discharge process is switched to, and then the defoaming process is performed, and then the second water discharge process is performed.
11. The method for draining a home appliance device according to claim 10, wherein,
in the water level detection step, when the water level detection device detects wash water or foam, the second defoaming process is skipped to switch to the second drainage process.
12. The method for draining a home appliance device according to claim 10, wherein,
in the first drainage program and/or the second drainage program, after the first drainage program or the second drainage program starts for a certain time, judging whether the voltage between the two detection electrodes is larger than a preset voltage value,
when the voltage between the two detection electrodes is greater than the preset voltage value, continuing to execute the first drainage program or the second drainage program,
executing error reporting program when the voltage between the two detection electrodes is not greater than the preset voltage value,
The preset voltage value is set based on a voltage value between the two detection electrodes when switching from the water intake process to the first water discharge process.
13. The method for draining an electric home appliance device according to any one of claims 1 to 12, wherein,
the home appliance apparatus is a laundry treating apparatus,
the laundry treating apparatus further includes:
a laundry treating tub having a bottomed tubular shape for accommodating laundry;
a laundry treating tub seal for sealing the laundry treating tub; and
an air pump having a negative pressure suction function, communicating with the laundry treating tank through a dehydration pipe, for evacuating the laundry treating tank during dehydration,
the water storage container is arranged on the dewatering pipeline and is positioned between the clothes treatment tank and the air pump,
the draining method of the household appliance device is performed in the dewatering process of the laundry treating device.
CN202111341831.1A 2021-11-12 2021-11-12 Drainage method for household appliance device Pending CN116122020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111341831.1A CN116122020A (en) 2021-11-12 2021-11-12 Drainage method for household appliance device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111341831.1A CN116122020A (en) 2021-11-12 2021-11-12 Drainage method for household appliance device

Publications (1)

Publication Number Publication Date
CN116122020A true CN116122020A (en) 2023-05-16

Family

ID=86299557

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111341831.1A Pending CN116122020A (en) 2021-11-12 2021-11-12 Drainage method for household appliance device

Country Status (1)

Country Link
CN (1) CN116122020A (en)

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