CN114481525A - Control method of drum washing machine - Google Patents

Control method of drum washing machine Download PDF

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Publication number
CN114481525A
CN114481525A CN202011261213.1A CN202011261213A CN114481525A CN 114481525 A CN114481525 A CN 114481525A CN 202011261213 A CN202011261213 A CN 202011261213A CN 114481525 A CN114481525 A CN 114481525A
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CN
China
Prior art keywords
heating module
electromagnetic heating
washing machine
water
drum
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
CN202011261213.1A
Other languages
Chinese (zh)
Inventor
刘凯
于明亮
刘晓春
侯永顺
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.)
Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Drum Washing Machine Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Drum Washing Machine Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Drum Washing Machine Co Ltd
Priority to CN202011261213.1A priority Critical patent/CN114481525A/en
Priority to PCT/CN2021/128645 priority patent/WO2022100504A1/en
Publication of CN114481525A publication Critical patent/CN114481525A/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
    • 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
    • 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
    • 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
    • D06F2103/52—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature or voltage
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/08—Draining of washing liquids
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Abstract

The invention belongs to the technical field of washing machines and discloses a control method of a roller washing machine, wherein the roller washing machine comprises an outer cylinder and an inner cylinder, the inner cylinder is arranged in the outer cylinder, and washing water can be independently contained during washing; an electromagnetic heating module for heating the inner barrel is arranged in the outer barrel; in the process that the electromagnetic heating module heats the inner barrel, the roller washing machine judges whether the electromagnetic heating module is in a dry-burning state or not according to the working parameters of the electromagnetic heating module and/or the environmental parameters around the electromagnetic heating module. The drum washing machine can judge whether the electromagnetic heating module is in a dry-burning state or not according to the working parameters of the electromagnetic heating module and/or the environmental parameters around the electromagnetic heating module, and accurately and timely judge the occurrence of the dry-burning state, so that corresponding feedback can be made, and the phenomenon that the electromagnetic heating module damages clothes in the inner drum due to dry-burning or the electromagnetic heating module is overheated to break down or even cause potential safety hazards due to dry-burning is prevented.

Description

Control method of drum washing machine
Technical Field
The invention belongs to the technical field of washing machines, and particularly relates to a control method of a drum washing machine.
Background
The existing drum washing machine generally comprises an inner drum and an outer drum, wherein a plurality of dewatering holes are arranged on the wall of the inner drum. However, in the washing process, the washing water between the inner tub and the outer tub is not used, resulting in a waste of the washing water. Meanwhile, the dirt generated in the washing process can be partially remained between the inner barrel and the outer barrel and is difficult to clean, and the long-term accumulation can cause pollution to the washing water and influence the washing effect.
In order to solve the above problems, the prior art provides a washing machine without dewatering holes on the inner barrel, so that the inner barrel can independently contain washing water in the washing process, the condition of water storage between the inner barrel and the outer barrel in the washing process can be avoided, the using amount of the washing water is saved, and the condition of dirt accumulation between the inner barrel and the outer barrel is also avoided to a great extent.
However, since there is no water between the inner and outer drums during the washing process, the washing water cannot be heated in the form of a heating pipe provided in the outer drum in the conventional washing machine. In order to solve the problem that the washing machine without dewatering holes on the inner drum heats the washing water, the Chinese patent with application number 201811191414.1 discloses a drum washing machine, which comprises a nonporous drum which is arranged in a shell and does not have dewatering holes, the side wall of the nonporous drum is provided with a clothes input opening, and the drum is provided with a door body which can turn over to open and close the clothes input opening; the outer cylinder is sleeved outside the roller, and an electromagnetic heating module is arranged on the outer cylinder to heat the inside of the outer cylinder and transfer the heating heat to the washing water contained in the roller.
However, in the above-described solution, there is no dry-heating prevention protection device provided for the electromagnetic heating module. Once a dry-fire condition occurs, a series of adverse effects can result. In a dry-burning state, the temperature of the inner drum can be rapidly increased under the action of the electromagnetic heating module, the temperature of the inner drum can exceed the heating temperature of washing water under a common condition, and when clothes exist in the inner drum, the clothes in the inner drum can be damaged due to the overhigh temperature of the inner drum. Accordingly, the electromagnetic heating module itself may be overheated, which may cause damage to the electromagnetic heating module in severe cases. The dry burning of the electromagnetic heating module can even cause fire or explosion and other accidents, and the use safety of users is seriously harmed.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a control method of a drum washing machine, which can avoid the dry burning condition of an electromagnetic heating module.
In order to solve the technical problems, the invention adopts the technical scheme that:
a control method of a roller washing machine comprises an outer barrel and an inner barrel, wherein the inner barrel is arranged in the outer barrel and can independently contain washing water during washing; an electromagnetic heating module for heating the inner barrel is arranged in the outer barrel;
in the process that the electromagnetic heating module heats the inner barrel, the roller washing machine judges whether the electromagnetic heating module is in a dry-burning state or not according to the working parameters of the electromagnetic heating module and/or the environmental parameters around the electromagnetic heating module.
Further, a first temperature sensor is arranged on the electromagnetic heating module, and in the process of heating the inner barrel by the electromagnetic heating module, if the temperature detected by the first temperature sensor is higher than a first preset temperature T1And judging that the electromagnetic heating module is in a dry-burning state.
Furthermore, the drum washing machine further comprises a second temperature sensor for detecting the temperature between the outer drum and the inner drum, and in the process that the electromagnetic heating module heats the inner drum, if the temperature detected by the second temperature sensor is higher than a second preset temperature T2And judging that the electromagnetic heating module is in a dry-burning state.
Further, in the process that the electromagnetic heating module heats the inner barrel, the roller washing machineMonitoring the output power of the electromagnetic heating module, and when the output power P of the electromagnetic heating module is greater than the set power P0And then, judging that the electromagnetic heating module is in a dry-burning state.
Further, the drum washing machine obtains the working current I and the working voltage U of the electromagnetic heating module, and calculates the output power P according to the output power P being I × U.
Further, when the electromagnetic heating module is judged to be in a dry-fire state, the electromagnetic heating module is controlled to stop heating.
Furthermore, when the electromagnetic heating module is judged to be in a dry-burning state, a water inlet device of the drum washing machine is controlled to feed water into the inner drum.
Further, when the water level in the inner barrel reaches a first preset water level H1When the water is filled, the water inlet device is controlled to stop water inlet;
preferably, when the water level in the inner barrel reaches a second preset water level H2When the inner cylinder is heated, the electromagnetic heating module is controlled to continue heating the inner cylinder; the second preset water level H2The setting of (1) satisfies: h2<H1。
Furthermore, after the water inlet device starts to feed water, if the inner cylinder is in a static state, the inner cylinder is controlled to rotate at a certain rotating speed.
Furthermore, a centrifugal drainage structure is arranged on the inner barrel and can reach a drainage rotating speed V on the inner barrelRow boardWhen the water is drained, the water tank is opened for draining;
when the water level in the inner cylinder reaches a third preset water level H2While controlling the water discharge rotating speed VRow boardThe electromagnetic heating module is at least partially immersed in water by rotating the outer cylinder to discharge water.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The drum washing machine can judge whether the electromagnetic heating module is in a dry-burning state or not according to the working parameters of the electromagnetic heating module and/or the environmental parameters around the electromagnetic heating module, and further can make corresponding feedback, so that the phenomenon that the electromagnetic heating module is in a dry-burning state to damage clothes in the inner drum, or the electromagnetic heating module is overheated to break down or even cause potential safety hazards due to the dry-burning is avoided.
According to the drum washing machine, whether the electromagnetic heating module is in the dry-burning state or not is judged by acquiring the temperature and the output power of the electromagnetic heating module or the temperature between the outer barrel and the inner barrel, the dry-burning state is accurately and timely judged, the electromagnetic heating module is controlled to stop heating when the dry-burning condition occurs, and adverse consequences caused by the dry-burning of the electromagnetic heating module can be effectively avoided.
The drum washing machine disclosed by the invention has the advantages that water is fed into the inner barrel when the electromagnetic heating module is judged to be in a dry-burning state, the inner barrel can be rapidly cooled, the electromagnetic heating module is automatically controlled to continue heating the inner barrel after the inner barrel reaches a certain water level height, the operation of a user is not needed, and the automatic elimination of the dry-burning fault is realized.
The drum washing machine controls the inner drum to rotate after the water inlet device starts to feed water, so that the water injected into the inner drum flows in the inner drum, and the cooling efficiency of the inner drum is accelerated. By controlling the inner cylinder to discharge water at a rotating speed VRow boardThe electromagnetic heating module is driven to rotate to drain water in the outer barrel, so that at least part of the electromagnetic heating module is immersed in water, the electromagnetic heating module is cooled rapidly, and the electromagnetic heating module is prevented from being overheated for a long time and breaking down.
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 is a schematic structural view of a drum washing machine according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a control method of the drum washing machine according to an embodiment of the present invention;
FIG. 3 is a flowchart of a control method of a drum washing machine according to a second embodiment of the present invention;
FIG. 4 is a flowchart of a control method of a drum washing machine according to a third embodiment of the present invention;
FIG. 5 is a schematic front view of a drum washing machine according to a fourth embodiment of the present invention;
FIG. 6 is a schematic view of the invention taken along the line A-A of FIG. 5;
FIG. 7 is a schematic structural view of an electromagnetic heating module according to the fourth and fifth embodiments of the present invention;
fig. 8 is an exploded view of a drum washing machine in accordance with a fourth embodiment of the present invention;
FIG. 9 is a schematic side view of a drum washing machine according to a fourth embodiment of the present invention;
FIG. 10 is a schematic view of the invention taken along the line B-B of FIG. 9;
fig. 11 is an enlarged view of the structure of fig. 10 at C according to the present invention.
In the figure: 1. an inner barrel; 2. an outer cylinder; 3. a power supply line; 11. a drain hole; 100. an electromagnetic heating module; 110. a housing body; 111. heat dissipation holes; 112. inserting grooves; 120. a mounting seat; 121. a plug-in part; 122. a limiting boss; 123. a seal member; 130. a wiring terminal; 210. a side wall; 211. mounting grooves; 212. a support; 213. a limiting part; 220. a bottom wall; 221. and (7) installing the opening.
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 order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of 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 be operated, 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," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.
Example one
As shown in fig. 1, the drum washing machine according to the present embodiment includes an outer tub 2 and an inner tub 1, and the inner tub 1 is disposed in the outer tub 2 and can independently contain washing water during washing.
In this embodiment, the wall of the inner cylinder 1 is not provided with dewatering holes, and is in a closed state in the washing process, and can independently contain washing water. The wall of the inner cylinder is provided with a drain hole 11, the drain hole 11 is plugged by a sealing component in the washing process, and when the inner cylinder 1 reaches a certain rotating speed, the sealing component can open the drain hole 11 under the action of centrifugal force to realize the drainage of washing water.
In an implementation mode of this embodiment, the lifting rib is installed at the position corresponding to the drain hole 11 on the wall of the inner cylinder 1, a hole is opened on the shell of the lifting rib, a centrifugal drainage structure is integrally arranged in the lifting rib, the initial state of the centrifugal drainage structure is a plugging state, the inner cylinder 1 is kept sealed and independently holds washing water, and the centrifugal drainage structure can be opened under the action of centrifugal force, so that the washing water can be discharged through the drain hole 11.
Specifically, the centrifugal drainage structure comprises a sealing plunger capable of reciprocating and an elastic piece for elastically restoring the sealing plunger, wherein the sealing plunger can reciprocate to open or close the drainage hole 11. The sealing plunger is connected with a balancing weight through a lever, when the rotating speed of the inner barrel 1 reaches the water drainage rotating speed, the matching block moves towards the direction far away from the axis of the inner barrel 1 under the action of centrifugal force to drive the sealing plunger to move towards the direction close to the axis of the inner barrel 1 to open the drain hole 11, when the rotating speed of the inner barrel 1 is low or does not rotate, the elastic part pushes the sealing plunger to move towards the direction far away from the axis of the inner barrel 1 to plug the drain hole 11, and the sealing of the inner barrel 1 is realized.
In this embodiment, an electromagnetic heating module 100 for heating the inner cylinder 1 is provided in the outer cylinder 2. The inner cylinder 1 has a cylinder wall made of a metal material and generates an eddy current effect by receiving a magnetic field generated by the electromagnetic heating module 100 to generate heat, and the outer cylinder 2 is made of a plastic material which does not excite the eddy current effect in the magnetic field.
In the process that the electromagnetic heating module 100 heats the inner barrel, the drum washing machine judges whether the electromagnetic heating module 100 is in a dry-burning state or not according to the working parameters of the electromagnetic heating module 100 and/or the environmental parameters around the electromagnetic heating module 100.
As shown in fig. 1 and 2, in a further embodiment of the present embodiment, a first temperature sensor is disposed on the electromagnetic heating module 100, and when the electromagnetic heating module 100 heats the inner cylinder, if the temperature detected by the first temperature sensor is higher than a first preset temperature T1The electromagnetic heating module 100 is determined to be in a dry-fire state.
In the above scheme, when there is no water in the inner cylinder 1, the heat generated by the electromagnetic heating module 100 heating the inner cylinder 1 cannot be further conducted, which may cause the temperature of the electromagnetic heating module 100 itself to rise rapidly and reach a temperature far higher than that in the non-dry-burning state. Roller washing machine judges whether it is the dry combustion method state through the temperature that detects electromagnetic heating module 100 self in the working process, and the appearance of the dry combustion method condition that can be timely accurate detects, and then makes corresponding feedback through control roller washing machine, prevents that electromagnetic heating module 100 from lasting dry combustion method from resulting in bad consequence.
Specifically, in the present embodiment, when the drum washing machine determines that the electromagnetic heating module 100 is in the dry-fire state, the electromagnetic heating module 100 is controlled to stop heating, so as to prevent the electromagnetic heating module 100 from continuing to heat and damage the clothes in the inner drum or damage the electromagnetic heating module 100.
In a further embodiment of the present embodiment, when it is determined that the electromagnetic heating module 100 is in the dry-heating state, the water inlet device of the drum washing machine is further controlled to feed water into the inner drum 1.
When the water level in the inner cylinder 1 reaches a first preset water level H1And when the water is filled, controlling the water inlet device to stop water inlet.
In the above-described embodiment, the electromagnetic heating module 100 is controlled to stop heating, and water is also injected into the inner cylinder 1 through the water inlet device. Because water supply is realized to water installations and running water intercommunication, the water of pouring into inner tube 1 is normal atmospheric temperature water to can carry out rapid cooling to the inner tube of high temperature. When the clothes exist in the inner barrel 1, the clothes can be quickly cooled, and the clothes are prevented from being damaged in a high-temperature environment for a long time.
In the preferred embodiment, when the water level in the inner cylinder 1 reaches the second preset water level H2And then, controlling the electromagnetic heating module 100 to continuously heat the inner barrel. The second preset water level H2The setting of (1) satisfies: h2<H1。
In the scheme, when the inner cylinder reaches a certain water level height, the electromagnetic heating module 100 is automatically controlled to restart, the inner cylinder 1 is continuously heated, the subsequent program can be continuously operated without user operation, and the dry burning fault is automatically eliminated.
Preferably, after the electromagnetic heating module 100 is restarted, the drum washing machine continues to determine whether the electromagnetic heating module is in a dry-fire state according to the operating parameters of the electromagnetic heating module and/or the environmental parameters around the electromagnetic heating module. When the electromagnetic heating module is in a dry-fire state, the electromagnetic heating module 100 is controlled to stop heating, and the water inlet device is controlled to feed water into the inner cylinder 1.
And when the frequency of judging that the electromagnetic heating module is in the dry-burning state reaches the preset frequency N, the drum washing machine stops running and gives an alarm.
In a further scheme of this embodiment, after the water inlet device starts to feed water, if the inner cylinder 1 is in a static state, the inner cylinder 1 is controlled to rotate at a certain rotation speed. The water injected into the inner cylinder 1 flows in the inner cylinder 1 by controlling the rotation of the inner cylinder 1, so that the cooling efficiency of the inner cylinder 1 is accelerated.
Further, the present inventionIn the embodiment, the centrifugal drainage structure arranged on the inner cylinder 1 can reach the drainage rotating speed V of the inner cylinderRow boardThe drain hole 11 is opened to drain water.
When the water level in the inner cylinder 1 reaches a third preset water level H2While controlling the inner cylinder 1 to discharge water at the rotating speed VRow boardThe rotation drains water into the outer tub 2, causing the electromagnetic heating module 100 to be at least partially immersed in water.
In the present embodiment, the electromagnetic heating module 100 is provided at the lower portion of the outer tube 2, preferably at the lowest portion inside the outer tube 2. By controlling the inner cylinder 1 to drain water into the outer cylinder 2, the drained water is collected to the bottom of the outer cylinder 2, and at least part of the electromagnetic heating module 100 can be immersed. Through the heat exchange of electromagnetic heating module 100 and water contact, can realize the rapid cooling to electromagnetic heating module 100, prevent that electromagnetic heating module 100 from overheating for a long time and breaking down.
In the present embodiment, the bottom of the outer tub 2 is provided with a mounting groove 211, and the electromagnetic heating module 100 is mounted in the mounting groove 211. Due to the recessed structure of the mounting groove 211, water discharged from the inner cylinder 1 can be collected into the mounting groove 211, so that immersion of the electromagnetic heating module 100 can be achieved with a smaller amount of water discharged.
Further, in order to control the water discharge amount of the inner tub 1, in the present embodiment, the inner tub 1 is controlled by the drum washing machine to discharge water at the rotation speed VRow boardAnd continuously rotating for a preset time to drain water. Or, a water level detection device for detecting the water level in the outer tub 2 is arranged on the drum washing machine, and when the water level detected by the water level detection device reaches a preset water level height, the inner tub 1 is controlled to stop rotating.
In this embodiment, the outer tub 2 is provided with a water outlet, and the drum washing machine further includes a water discharge device communicating the water outlet with the outside of the drum washing machine. Preferably, the drain port is disposed on the mounting groove 211, and water collected in the mounting groove 211 can be directly drained through the drain port, thereby preventing the situation that washing water remains in the mounting groove 211 after the drainage device drains the water.
In order to ensure that the electromagnetic heating module 100 can be immersed by the washing water to realize heat dissipation in the process of heating the inner barrel 1, the drainage device is controlled to be kept closed in the process of draining the water from the inner barrel 1 into the outer barrel 2, and the communication between the drainage outlet and the outside of the drum washing machine is cut off, so that the drained washing water can be kept in the outer barrel 2 to immerse the electromagnetic heating module 100.
In this embodiment, in the process that the electromagnetic heating module 100 heats the inner barrel 1, the drum washing machine determines whether the electromagnetic heating module 100 is in the dry-burning state by detecting the temperature of the electromagnetic heating module 100 itself, and controls the electromagnetic heating module 100 to stop heating when the electromagnetic heating module is determined as the dry-burning state, so that the occurrence of the dry-burning condition can be accurately detected in time, and the phenomenon that the electromagnetic heating module 100 continuously burns and damages the clothes or causes a fault is avoided. When the dry-fire condition is judged to occur, water is injected into the inner barrel 1 for cooling, the electromagnetic heating module 100 is restarted to continue heating when the water level in the inner barrel 1 reaches a certain height, the follow-up program can be automatically operated without user operation, and the automation degree is high.
Example two
As shown in fig. 1 and 3, the present embodiment is different from the first embodiment in that: the drum washing machine comprises a second temperature sensor for detecting the temperature between the outer drum 2 and the inner drum 1, and if the temperature detected by the second temperature sensor is higher than a second preset temperature T in the process of heating the inner drum by the electromagnetic heating module 1002The electromagnetic heating module 100 is determined to be in a dry-fire state.
In the above scheme, the inner cylinder 1 generates an eddy current effect due to the magnetic field generated by the electromagnetic heating module 100 to generate heat, and when there is no water in the inner cylinder 1, the generated heat cannot be effectively conducted out, which may cause the temperature of the inner cylinder 1 to rapidly rise to a higher range, and further cause the temperature between the outer cylinder 2 and the inner cylinder 1 to rise under the influence of the high-temperature inner cylinder 1. Roller washing machine judges whether electromagnetic heating module 100 is the dry combustion method state through detecting the temperature between urceolus 2 and the inner tube 1 in electromagnetic heating module 100 working process, can be timely accurate detect the appearance of the dry combustion method condition, and then makes corresponding feedback through controlling roller washing machine, prevents that electromagnetic heating module 100 from lasting dry combustion method and leading to bad consequence.
In this embodiment, the control method after determining that the electromagnetic heating module 100 is in the dry-heating state is the same as the scheme in the first embodiment, so that the rapid cooling of the inner cylinder 1 and the electromagnetic heating module 100 and the automatic elimination of the dry-heating fault can be realized, and the drum washing machine can automatically run the subsequent program without user operation, thereby facilitating the use of the user.
EXAMPLE III
As shown in fig. 1 and 4, the present embodiment is different from the first embodiment in that: during the process that the electromagnetic heating module 100 heats the inner drum 1, the drum washing machine monitors the output power of the electromagnetic heating module 100. When the output power P of the electromagnetic heating module 100 is greater than the set power P0Then, the electromagnetic heating module 100 is determined to be in a dry-fire state.
Further, in the process that the electromagnetic heating module 100 heats the inner barrel 1, the drum washing machine obtains the working current I and the working voltage U of the electromagnetic heating module 100 in real time, and calculates the output power P according to the output power P ═ I × U.
In the above solution, when there is no water in the inner cylinder 1, the heat generated by the electromagnetic heating module 100 heating the inner cylinder 1 cannot be further conducted, which results in a large difference between the output power P of the electromagnetic heating module 100 in the operating state and the water in the inner cylinder 1. Because the output power P can reflect the working condition of the electromagnetic heating module 100 in real time, and the temperature of the electromagnetic heating module 100 and the surrounding temperature thereof needs a certain time, the drum washing machine judges whether the drum washing machine is in a dry-burning state or not by monitoring the output power P in the working process of the electromagnetic heating module 100, compared with the judgment hysteresis phenomenon which possibly occurs by adopting the temperature as a judgment standard, the detection of the dry-burning condition is more timely and accurate, and the occurrence of misjudgment condition is reduced.
In this embodiment, the control method after determining that the electromagnetic heating module 100 is in the dry-heating state is the same as the scheme in the first embodiment, so that the rapid cooling of the inner cylinder 1 and the electromagnetic heating module 100 and the automatic elimination of the dry-heating fault can be realized, and the drum washing machine can automatically run the subsequent program without user operation, thereby facilitating the use of the user.
Example four
As shown in fig. 1 and fig. 5 to 11, the present embodiment provides a drum washing machine, which adopts the control method of the drum washing machine according to any one of the first to third embodiments.
In this embodiment, the outer tub 2 includes a side wall 210 and a bottom wall 220, and the mounting groove 211 is provided on the side wall 210 and extends along an axis of the outer tub 2 with a certain length. One end of the mounting groove 211 extends to the bottom wall 220 of the outer cylinder 2, and the end of the bottom wall 220 corresponding to the mounting groove 211 is provided with a mounting opening 221. The electromagnetic heating module 100 is installed in the installation recess 211 through the installation opening 221.
Further, the electromagnetic heating module 100 includes an electromagnetic heating coil and a plastic casing covering the electromagnetic heating coil, the plastic casing extends along an axis of the outer cylinder 2 to have a certain length, one end of the plastic casing passes through the installation opening 221 and extends into the installation groove 211, and the other end of the plastic casing is located outside the installation opening 221.
The electromagnetic heating coil is connected with the wiring terminal 130, and the wiring terminal 130 penetrates out of the end part of the plastic package shell, which is positioned outside the mounting port 221.
In the above solution, the connection terminal 130 penetrates out from the right end of the mounting seat 120 to extend out of the mounting opening 221, and then can be connected to the power supply line 3 of the drum washing machine, so as to supply power to the electromagnetic heating module 100 and heat the inner drum 1.
The specific structure of the mounting seat 120 in this embodiment is shown in fig. 7. The mounting seat 120 includes a plug portion 121 plugged with the mounting opening 221, and the housing body 110 is plugged into one end of the plug portion 121 extending into the mounting opening 221.
The other end of the insertion part 121 is provided with a limit boss 122, and the limit boss 122 is abutted against the bottom wall 220 of the outer cylinder 2 at the outer side of the mounting opening 221.
In the above scheme, the left end of the insertion part 121 is a hollow structure, and the housing body 110 is inserted into the left end of the insertion part 121, so that the electromagnetic heating coil is enclosed inside the plastic-sealed housing. The right end of the insertion part 121 is provided with the limit boss 122, and the limit boss 122 abuts against the bottom wall 220 to limit the position of the mounting seat 120, so that the mounting position of the electromagnetic heating module 100 is more accurate.
In a further scheme of this embodiment, a sealing member 123 in interference fit with the mounting opening 221 is provided on a side wall of the insertion part 121, the insertion part 121 is inserted into the mounting opening 221, and the sealing member 123 blocks the mounting opening 221.
In the above embodiment, the sealing member 123 is disposed on the right end peripheral side of the insertion part 121, and the sealing member 123 may be made of rubber and be in interference fit with the mounting opening 221. During the insertion of the socket 121 into the mounting opening 221, the seal 123 on the circumferential side of the socket 121 is gradually inserted into the mounting opening 221. When the stop boss 122 abuts the bottom wall 220, the sealing member 123 is fully inserted into the mounting opening 221. Because the sealing member 123 is in interference fit with the mounting port 221, the sealing member 123 plugs the mounting port 221 after entering the mounting port 221, and the risk of water leakage and electric leakage caused by water leakage at the mounting port 221 is avoided.
In this embodiment, the electromagnetic heating module 100 may be assembled in advance as an independent module, the assembled electromagnetic heating module 100 may be directly inserted into the mounting groove 211 through the mounting opening 221, and then the connection terminal 130 exposed outside the mounting opening 221 is connected to the power supply line 3 of the drum washing machine, so as to complete the assembly of the electromagnetic heating module 100 and the outer tub 2.
As shown in fig. 7 to 11, in a preferred embodiment of the present invention, a bracket 212 for supporting the electromagnetic heating module 100 is disposed in the mounting groove 211, and the bracket 212 is respectively connected to an inner wall of the mounting groove 211 and a portion of the plastic casing extending into the mounting groove 211, that is, the bracket 212 is connected to the casing body 110.
Specifically, the two sides of the plastic package housing, that is, the left and right sides of the housing body 110, are respectively provided with an insertion groove 112 extending along the axis of the outer cylinder 2, and the bracket 212 is fixedly connected with the inner wall of the mounting groove 211 and inserted into the insertion groove 112 from the free end of the plastic package housing.
Preferably, the bracket 212 is made of plastic material, and does not induce eddy current effect in the magnetic field generated by the electromagnetic heating module 100, thereby generating heat.
More preferably, the bracket 212 is integrally formed with the sidewall 210 of the outer tub 2 to extend from the left and right inner walls of the mounting groove 211 toward the inside of the mounting groove 211.
Furthermore, the upper surface of the bracket 212 is provided with a limiting part 213, and when the bracket 212 is inserted into the insertion slot 112, the limiting part 213 abuts against the two side surfaces of the electromagnetic heating module 100.
In the above-described configuration, the extension length of the electromagnetic heating module 100 in the axial direction of the outer tube 2 is long, and the weight of the electromagnetic heating module 100 itself is large, and stable support of the electromagnetic heating module 100 cannot be achieved well only by the insertion fitting of the mounting base 120 and the mounting opening 221. The left end of the electromagnetic heating module 100 is suspended, and may fall down due to gravity, and in severe cases, the assembly structure of the mounting base 120 and the mounting opening 221 may be damaged. The portion of the electromagnetic heating module 100 extending into the mounting groove 211 is supported by the bracket 212, so that the electromagnetic heating module 100 is more stably mounted in the mounting groove 211.
In another preferred embodiment of this embodiment, the electromagnetic heating module 100 further includes a support portion disposed at the free end of the plastic package housing, and the support portion extends from the free end of the plastic package housing to the inner wall of the mounting groove 211 and is connected to the inner wall of the mounting groove 211.
Preferably, the support part and the plastic package housing are integrally formed.
In the above scheme, the supporting portion also plays a role in supporting the suspended end of the electromagnetic heating module 100, and the stability of the electromagnetic heating module 100 installed in the installation groove 211 is ensured. The supporting part and the shell body 110 of the plastic package shell are integrally formed, a part for supporting the electromagnetic heating module does not need to be arranged independently, and the structure is simpler. When the electromagnetic heating module is installed, the installation base 120 is inserted into the installation opening 221 from the outer side of the bottom wall 220, then the shell body 110 provided with the supporting portion is inserted into the insertion part 121 of the installation base 120 from the inner side of the installation opening 221, the electromagnetic heating coil is sealed, and finally the cylinder wall and the cylinder bottom of the outer cylinder 2 are assembled together, namely the assembly of the outer cylinder 2 and the electromagnetic heating module 100 is completed.
In a further aspect of the present embodiment, an upper surface of the electromagnetic heating module 100 facing the inner cylinder 1 is an arc surface coaxial with the side wall of the inner cylinder 1.
In this embodiment, the upper surface of the electromagnetic heating module 100 is set to be an arc surface coaxial with the side wall of the inner cylinder 1, so that distances between each position on the upper surface of the electromagnetic heating module 100 and the side wall of the inner cylinder 1 are equal, the side wall of the inner cylinder 1 is heated uniformly, and uniform heating of the washing water is realized.
Preferably, the drain port of the mounting groove 211 is provided on the bottom wall of the mounting groove 211 below the free end of the electromagnetic heating module 100. The position of setting up of outlet is kept away from installing port 221 as far as possible and is set up, has avoided the trend that the washing water in mounting groove 211 gathers near installing port 221 department, has further reduced the risk that the installing port 221 department takes place to leak, and then has avoided binding post 130 and power supply line 3 and washing water contact to cause the electric leakage accident.
In this embodiment, by forming the mounting opening 221 in the bottom 220 of the outer tube 2, the electromagnetic heating module 100 can be inserted into the mounting groove 211 as an independent module directly through the mounting opening 221, and the assembly is simple. Through the design of the mounting seat 120 of the electromagnetic heating module 100, the mounting position of the electromagnetic heating module 100 is more accurate, and the sealing of the mounting opening 221 is realized through the sealing member 123. The support 212 supports the suspended end of the electromagnetic heating module 100, so that the length and weight of the electromagnetic heating module 100 are prevented from affecting the installation stability of the electromagnetic heating module, and meanwhile, the assembly structure of the installation seat 120 and the installation opening 221 is prevented from being damaged.
EXAMPLE five
As shown in fig. 1, the present embodiment provides a control method of the drum washing machine according to the fourth embodiment. Before the electromagnetic heating module 100 starts to heat the inner cylinder, or in the process of heating the inner cylinder by the electromagnetic heating module 100, the inner cylinder 1 is controlled to drain water into the outer cylinder 2, so that the electromagnetic heating module 100 is at least partially immersed in the water.
Specifically, in the present embodiment, before the electromagnetic heating module 100 starts heating the inner cylinder 1, or during the heating of the inner cylinder 1 by the electromagnetic heating module 100, the inner cylinder 1 is controlled to have the drainage rotation speed VRow boardThe rotation drains water into the outer cylinder 2.
In the above scheme, at least part of the electromagnetic heating module 100 is immersed in the water drained from the inner cylinder 1 to the outer cylinder 2, so that the electromagnetic heating module 100 can be in contact with the surrounding washing water to perform heat exchange, and further the heat dissipation of the electromagnetic heating module 100 is realized, the heat dissipation effect is good, and the electromagnetic heating module is prevented from breaking down due to overheating in the working process.
In this embodiment, the scheme for controlling the inner cylinder to start rotating for draining at least includes the following three schemes:
in the first scheme, after the drum washing machine receives an instruction for starting the electromagnetic heating module 100, the inner drum 1 is controlled to drain water at the rotating speed VRow boardThe water is discharged into the outer cylinder 2 by rotating;
preferably, the drum washing machine receives an instruction for starting the electromagnetic heating module 100, and controls the inner drum 1 to rotate and drain water into the outer drum 2 after a first preset time;
more preferably, the drum washing machine determines the first preset time period according to a set heating temperature of the washing water.
In the second embodiment, the electromagnetic heating module 100 is provided with a first temperature sensor, and when the temperature detected by the first temperature sensor is higher than a first set temperature, the inner cylinder 1 is controlled to drain at the drain rotation speed VRow boardThe water is discharged into the outer cylinder 2 by rotating;
or, a second temperature sensor for detecting the temperature between the inner cylinder 1 and the outer cylinder 2 is arranged in the outer cylinder 2, and when the temperature detected by the second temperature sensor is higher than a second set temperature, the inner cylinder 1 is controlled to discharge the water at a drainage rotating speed VRow boardThe water is discharged into the outer cylinder 2 by rotating;
or, the first temperature sensor and the second temperature sensor can be arranged at the same time, when the temperature detected by any one temperature sensor is higher than the corresponding set temperature, the inner cylinder 1 is controlled to drain the water at the rotating speed VRow boardThe rotation drains water into the outer cylinder 2.
And in the third scheme, the drum washing machine is provided with a washing water heating program, and after receiving an instruction for operating the washing water heating program, the drum washing machine controls the inner drum 1 to drain water at a rotating speed V in the washing water inlet processRow boardThe water is drained from the outer cylinder 2 by rotation, and the drum washing machine is controlled to run according to a set washing program to wash after water is fed;
or, the drum washing machine firstly controls the inner drum 1 to drain the water at the rotating speed V after the washing water inlet is finishedRow boardThe electromagnetic heating module 100 is rotated to discharge water into the outer cylinder 2After partial immersion, controlling the drum washing machine to operate according to a set washing program to wash;
the drum washing machine controls the electromagnetic heating module 100 to start heating the inner drum 1 in the running process of the washing program.
In the first and second schemes, after a certain time elapses or a certain temperature is reached after the electromagnetic heating module 100 starts to heat, the inner cylinder 1 is controlled to rotate to drain water into the outer cylinder 2, so that the electromagnetic heating module 100 is not immersed in the washing water in the earlier heating period. So in the heating earlier stage, the heating efficiency of electromagnetic heating module 100 can not receive the influence that the washing water soaked, has guaranteed the intensification rate of heating washing water in earlier stage, can make the washing water reach the settlement temperature fast.
In the third aspect, the inner tub 1 is controlled to rotate to drain water into the outer tub 2 during or after the water is introduced before the washing process is started, so that the operation of immersing the electromagnetic heating module 100 can be completed before the laundry is washed, and the operation of draining water into the outer tub 2 during the subsequent washing process does not need to be suspended in the middle of the washing program. Therefore, the condition that the washing effect of the clothes is influenced by changing the rotating speed of the inner barrel 1 in the washing process is avoided.
In order to control the water discharge amount of the inner drum 1, in a further scheme of the embodiment, the inner drum 1 is controlled by the drum washing machine to discharge water at the rotating speed VRow boardAnd continuously rotating for a second preset time to drain water. The drainage time is controlled by controlling the rotation time of the inner cylinder 1, namely the drainage time, at a certain drainage rotating speed VRow boardThe drainage rate of the lower drum washing machine is basically unchanged, so that the drainage quantity of the electromagnetic heating module 100 soaked by the drainage water of the inner drum 1 at each time can be controlled to be basically consistent.
In another embodiment of the present invention, a water level detecting device for detecting the water level in the outer tub 2 is disposed on the drum washing machine, and when the water level detected by the water level detecting device reaches a preset water level, the inner tub 1 is controlled to reduce the rotation speed.
In the scheme, the inner cylinder 1 is controlled to reduce the rotating speed until the centrifugal drainage structure blocks the drainage hole 11, or the inner cylinder 1 is directly controlled to stop rotating, so that the inner cylinder 1 can be controlled to stop draining. The water level in the outer cylinder 2 is detected by arranging a water level detection device to control the inner cylinder 1 to stop draining, so that the drainage amount of the inner cylinder 1 is kept consistent every time the electromagnetic heating module 100 is immersed for heat dissipation.
As shown in fig. 1, the present embodiment further provides a drum washing machine, which adopts the control method of the drum washing machine. The electromagnetic heating module 100 of the drum washing machine has a heat dissipation structure, and heat dissipation of the electromagnetic heating module 100 can be realized through the heat dissipation structure.
Further, as shown in fig. 1 and 7, the heat dissipation structure includes heat dissipation holes 111 provided on an upper surface of the electromagnetic heating module 100.
Specifically, the plastic package housing has an upper surface facing the inner cylinder 1 and a lower surface opposite to the upper surface. The upper surface of the plastic package shell is provided with a first opening, and the lower surface of the plastic package shell is provided with a second opening corresponding to the first opening. The plastic package shell extends to the second opening from the first opening to the direction far away from the inner cylinder 1, and a heat dissipation hole 111 penetrating through the electromagnetic heating module 100 is formed.
Through set up louvre 111 that link up from top to bottom on electromagnetic heating module 100, increased electromagnetic heating module 100's surface area, cooperation control inner tube 1 is to the radiating mode of urceolus drainage submergence electromagnetic heating module 100, has also increased the area of contact of electromagnetic heating module 100 with surrounding air and washing water for radiating efficiency has obtained further improvement.
In this embodiment, in the process that the electromagnetic heating module 100 heats the inner cylinder 1, the inner cylinder 1 is controlled to rotate to drain water into the outer cylinder, so that at least part of the electromagnetic heating module 100 is immersed in the washing water, the washing water immersed in the electromagnetic heating module 100 can be used for realizing heat dissipation of the electromagnetic heating module 100, the heat dissipation effect is good, and faults caused by overheating in the working process of the electromagnetic heating module are prevented. The electromagnetic heating module 100 is provided with the heat dissipation holes 111 which are vertically communicated, so that the contact area between the electromagnetic heating module 100 and the surrounding air and washing water is increased, and the heat dissipation efficiency of the electromagnetic heating module 100 is further improved.
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 (10)

1. A control method of a roller washing machine comprises an outer barrel and an inner barrel, wherein the inner barrel is arranged in the outer barrel and can independently contain washing water during washing; an electromagnetic heating module for heating the inner barrel is arranged in the outer barrel;
the drum washing machine is characterized in that in the process that the electromagnetic heating module heats the inner drum, the drum washing machine judges whether the electromagnetic heating module is in a dry burning state or not according to the working parameters of the electromagnetic heating module and/or the environmental parameters around the electromagnetic heating module.
2. The control method of the drum washing machine according to claim 1, characterized in that the electromagnetic heating module is provided with a first temperature sensor, and in the process of heating the inner drum by the electromagnetic heating module, if the temperature detected by the first temperature sensor is higher than a first preset temperature T1And judging that the electromagnetic heating module is in a dry-burning state.
3. The control method of a drum washing machine according to claim 1, characterized in that the drum washing machine further comprises a second temperature sensor for detecting the temperature between the outer drum and the inner drum, and if the temperature detected by the second temperature sensor is higher than a second preset temperature T during the heating of the inner drum by the electromagnetic heating module, the second temperature sensor detects that the temperature is higher than the second preset temperature T2And judging that the electromagnetic heating module is in a dry-burning state.
4. The control method of a drum washing machine according to claim 1, characterized in that, the control method is performed electricallyIn the process that the magnetic heating module heats the inner barrel, the roller washing machine monitors the output power of the electromagnetic heating module, and when the output power P of the electromagnetic heating module is greater than the set power P0And then, judging that the electromagnetic heating module is in a dry-burning state.
5. The control method of the drum washing machine according to claim 4, characterized in that the drum washing machine obtains the operating current I and the operating voltage U of the electromagnetic heating module, and calculates the output power P according to the output power P ═ I × U.
6. A control method of a drum washing machine according to any one of claims 1-5, characterized in that when the electromagnetic heating module is judged to be in a dry-fire state, the electromagnetic heating module is controlled to stop heating.
7. A control method of a drum washing machine as claimed in claim 6, characterized in that when the electromagnetic heating module is judged to be in a dry-fire state, the water inlet device of the drum washing machine is also controlled to feed water into the inner drum.
8. A control method of a drum washing machine according to claim 7, characterized in that when the water level in the inner drum reaches the first preset water level H1When the water is filled, the water inlet device is controlled to stop water inlet;
preferably, when the water level in the inner barrel reaches a second preset water level H2When the inner cylinder is heated, the electromagnetic heating module is controlled to continue heating the inner cylinder; the second preset water level H2The setting of (1) satisfies: h2<H1。
9. A control method of a drum washing machine according to claim 7 or 8, characterized in that after the water inlet device starts to feed water, if the inner drum is in a static state, the inner drum is controlled to rotate at a certain rotation speed.
10. A method of controlling a drum washing machine according to any one of claims 7-9, characterized in that the inner drum is provided withHaving a centrifugal drainage arrangement which can reach a drainage rate V at the inner tubeRow boardWhen the water is drained, the water tank is opened for draining;
when the water level in the inner cylinder reaches a third preset water level H2While controlling the inner cylinder to discharge water at a rotating speed VRow boardThe electromagnetic heating module is at least partially immersed in water by rotating the outer cylinder to discharge water.
CN202011261213.1A 2020-11-12 2020-11-12 Control method of drum washing machine Pending CN114481525A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202011261213.1A CN114481525A (en) 2020-11-12 2020-11-12 Control method of drum washing machine
PCT/CN2021/128645 WO2022100504A1 (en) 2020-11-12 2021-11-04 Washing machine and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011261213.1A CN114481525A (en) 2020-11-12 2020-11-12 Control method of drum washing machine

Publications (1)

Publication Number Publication Date
CN114481525A true CN114481525A (en) 2022-05-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011261213.1A Pending CN114481525A (en) 2020-11-12 2020-11-12 Control method of drum washing machine

Country Status (1)

Country Link
CN (1) CN114481525A (en)

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