WO2019201265A1

WO2019201265A1 - Clothing treating device

Info

Publication number: WO2019201265A1
Application number: PCT/CN2019/082982
Authority: WO
Inventors: 赵志强; 许升; 吕佩师
Original assignee: 青岛海尔滚筒洗衣机有限公司
Priority date: 2018-04-17
Filing date: 2019-04-17
Publication date: 2019-10-24

Abstract

A clothing treatment device, comprising a coil (11) and a rotary tub made out of a metal material. The coil (11) is electrified to generate a high-frequency alternating magnetic field, such that the rotary tub generates heat. The treating device can solve the problems of limited mounting positions, low drying efficiency, and hidden dangers of existing heating devices.

Description

Clothing treatment device

The present disclosure claims the Chinese patent application filed on April 17, 2018 by the Chinese Patent Office, application number 201810343882.X, and the priority of the Chinese patent application filed on April 19, 2018, the Chinese Patent Office, application number 201810354670.1 The entire contents of the above application are incorporated herein by reference.

Technical field

The invention relates to the technical field of laundry treatment, and in particular to a laundry treatment device.

Background technique

The current washing machine has a heating function for both the pulsator washing machine and the drum washing machine. The washing machine usually has a groove at the bottom of the outer cylinder, and a heating device such as a heater is installed in the groove, and the heating device generates heat during the working process. For heating the water in the outer cylinder.

The installation position of the heating device adopting the above structure is limited by the space of the outer cylinder, and the area far from the heating device cannot be dried, resulting in low drying efficiency, and the wire of the heating device is easily damaged, thereby causing safety hazards.

Summary of the invention

The present invention provides a laundry treatment device which is advantageous for solving the problems of limited heating installation position, low drying efficiency, and safety hazards existing in the heating device.

Provided herein is a laundry treating apparatus including a coil and a rotating drum of a metal material, the coil being energized to generate a high frequency alternating magnetic field to cause the rotating cylinder to generate heat.

DRAWINGS

1 is a schematic structural view of a laundry treating apparatus according to Embodiment 1 of the present invention;

Figure 2 is a partial enlarged view of the portion I in Figure 1;

3 is a schematic structural view of a laundry treating apparatus according to Embodiment 2 of the present invention;

4 is a schematic structural view of a laundry treating apparatus according to Embodiment 3 of the present invention;

Figure 5 is a schematic structural view of a laundry treating apparatus according to Embodiment 4 of the present invention;

Figure 6 is an enlarged schematic view of A of Figure 5 of the present invention.

In the picture:

11, coil; 12, inner cylinder; 121, centrifugal hole; 13, fixed frame; 14, housing; 15, outer cylinder; 16, water collecting tray; 21, inner cylinder; 22, outer cylinder; 23, magnetic induction coil ; 24, mounting frame; 25, temperature sensor.

detailed description

In order to clarify the technical problems, the technical solutions, and the technical effects achieved by the present invention, the technical solutions herein will be further described below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative and not restrictive. In addition, it should be noted that, for the convenience of description, only some but not all of the related parts are shown in the drawings.

When the heating device of the related art is used to heat the water in the outer cylinder of the washing machine, there are the following problems:

1. The setting position of the heating device is limited, it is difficult to heat the entire outer cylinder and the inner cylinder, so that the temperature near the position of the heating device is too high, the heat is concentrated, the dry burning is easy, and the drying efficiency is low, and the area far from the heating device is far away. Can not be dried, easy to breed bacteria; therefore the heating device of the above structure is not conducive to drying.

2. The heating device is disposed inside the outer cylinder, occupies the space of the outer cylinder, and foreign matter such as wire dust is easily accumulated in the groove or wound on the heating device, thereby affecting the heating effect.

3. The heating device is placed inside the outer cylinder. After installation, the sealing effect should be ensured, and the sealing requirements during installation are high.

4. Because the heating device is often heated at a high temperature, the structural parts around the heating device are often in a high temperature state, the sealing structure is aging fast, and it is easy to cause leakage, which has potential safety hazards.

5. When heating the washing water, the vicinity of the heating device of the washing machine is hot water vapor, and the rest is cold water vapor. When the hot and cold water vapor meets, the hot water vapor will liquefy into small water drops. And it is condensed on the inner wall surface of the rest of the part. Since the inner wall surface of the washing machine casing is installed with a wire, when used for a long time, the condensed water drops will cause damage to the wire. Once the washing machine is energized, the light will produce a strange smell. Create a security risk.

6. Since the heating device is installed in the groove, there may be a situation in which the detergent is deposited in the groove, resulting in a decrease in the energy efficiency of the detergent. Moreover, after the washing is completed, the moist environment inside the outer cylinder and the residual detergent are highly susceptible to mold.

7. It is difficult for the heating device to directly heat the air in the entire large space. When drying the outer cylinder, the drying efficiency is extremely low, and only local high temperature can be caused, which easily causes the heating member to burn.

Disclosed herein is a laundry treating apparatus comprising a coil and a rotating cylinder of metal material, the coil being energized to generate a high frequency alternating magnetic field to cause the rotating cylinder to generate heat.

In one embodiment, the laundry treating apparatus further includes a rectifying device configured to generate a high frequency alternating voltage, the coil being powered by the rectifying device, the rotating cylinder being placed at a high frequency alternating generated by the coil Within the range of the magnetic field, the rotating cylinder within the range of the high frequency alternating magnetic field generated by the coil generates eddy currents during the rotation to cause the rotating cylinder to heat itself.

In an embodiment, the laundry treating device is a drum washing machine or a pulsator washing machine, the laundry treating device further includes an outer cylinder, an inner cylinder and a casing, the rotating cylinder is the inner cylinder, the coil and the The rectifying device is disposed between the outer cylinder and the casing.

In an embodiment, a fixing frame made of an insulating material is further disposed between the casing and the outer cylinder, and the coil is fixed on the fixing frame.

In an embodiment, the fixing frame is fixed to a sidewall of the outer cylinder, and the rectifying device is disposed on an inner wall of the casing.

In an embodiment, the laundry treating device is a non-perforated inner tub washing machine, the rotating drum is provided with a centrifugal hole, the coil is disposed away from the centrifugal hole, and a lower portion of the rotating cylinder is provided with a water receiving tray, A water retaining plate is disposed on the water receiving tray, and the coil is disposed on the fixing frame.

In an embodiment, the coil seal is disposed in an insulating material, and the insulating material is a non-metallic material.

In an embodiment, the laundry treating device is a pulsator washing machine or a drum washing machine, the outer tube of the laundry treating device is made of a non-metallic material; the inner tube of the laundry treating device is made of a stainless steel material; or

The laundry treating apparatus is a non-porous inner tub washing machine, and the rotating drum is made of a stainless steel material.

In one embodiment, the coil is a disc-like structure that is concentrically wound from a copper wire.

In an embodiment, a side of the coil facing away from the rotating cylinder is further provided with a shielding structure for shielding a high-frequency alternating magnetic field generated by the coil.

In an embodiment, the shielding structure is made of a high permeability material.

In one embodiment, the laundry treating apparatus further includes an inner cylinder and an insulated outer cylinder, the rotating cylinder is the inner cylinder, and the coil is located outside the outer cylinder, and the magnetic force generated when the coil is energized A wire can heat the inner cylinder.

In an embodiment, the coil has a disk-like configuration and a central axis of the coil is perpendicular to a central axis of the outer cylinder.

In an embodiment, the laundry treating apparatus further includes an insulated mounting bracket mounted on an outer wall of the outer cylinder, the coil being placed on the mounting bracket.

In an embodiment, the coil is mounted on an outer wall of the outer cylinder.

In an embodiment, a plurality of magnetic strips are mounted on the outer side of the coil, and the magnetic strips are used to reduce leakage of magnetic lines.

In an embodiment, the coil is a high frequency resonant coil.

In an embodiment, the coil is provided in plurality, and a plurality of the coils are evenly distributed outside the outer cylinder in the axial direction of the outer cylinder.

In an embodiment, the coil is provided in plurality, and a plurality of the coils are evenly distributed outside the outer cylinder along a circumferential direction of the outer cylinder.

In an embodiment, the laundry treating apparatus further includes a temperature sensor disposed at a bottom of the outer cylinder, the temperature sensor for detecting a temperature of the washing water in the outer cylinder.

In an embodiment, the laundry treating apparatus further includes a controller connected to the coil and the temperature sensor, and the controller controls on/off of the coil according to a temperature signal transmitted by the temperature sensor.

Embodiment 1

As shown in FIGS. 1 and 2, the present embodiment provides a laundry treating apparatus including a rectifying device capable of generating a high-frequency alternating voltage, a coil 11 powered by the rectifying device, and being placed in the coil 11 a rotating cylinder made of a magnetically conductive material in a high-frequency alternating magnetic field, and the rotating cylinder within the range of the high-frequency alternating magnetic field generated by the coil 11 generates eddy current during the rotation to cause self-heating. The specific principle is that the coil 11 and the rotating cylinder form a transformer, the coil 11 is a primary coil, and the rotating cylinder forms a secondary coil, so that an induced eddy current is generated inside the rotating cylinder to cause itself to generate heat. The laundry processing device is a drum washing machine, a pulsator washing machine, or a non-perforated inner tub washing machine. In this embodiment, the drum washing machine is taken as an example. The laundry treating device includes an outer cylinder 15 , an inner cylinder 12 and a casing 14 , and the rotating cylinder can be The ground is selected as the inner cylinder 12.

In this embodiment, a high-frequency alternating voltage is generated by the rectifying device, and is supplied to the coil 11, so that a high-frequency alternating magnetic field is formed around the coil 11. The dotted line with an arrow in FIG. 2 indicates a magnetic line direction; The inside of the rotating cylinder in the alternating magnetic field and made of metal material will form an induced eddy current, so that the rotating cylinder itself generates heat, thereby heating the water, air or clothes in the rotating cylinder, thereby improving the heating efficiency; The cylinder is made of a metal material, and the rotating cylinder also has the effect of weakening the strength of the magnetic field, and the magnetic field strength of the magnetic induction line passing through the rotating cylinder can be greatly reduced, so that the magnetic field strength can be reduced to a level beneficial to the human body, Improve the blood circulation of the human body and avoid the harm caused by high frequency magnetic fields to the human body.

In this embodiment, the electric heating principle is adopted, and the rotating cylinder is used as a component for generating heat, and there is no need to provide a conventional heater, which saves installation space, there is no sealing problem between the heating device and the rotating cylinder, and there is no entanglement of the windings in the heating device. The problem of dry burning is caused by the above; and the heat inside the entire rotating cylinder is such that the heat of each part of the entire rotating cylinder is not much different, and the problem of excessive local temperature is not caused.

By using the above electromagnetic heating principle, since the area of the rotating cylinder in the high-frequency alternating magnetic field is large, the speed of heating the rotating cylinder is greatly improved, and since the rotating cylinder has a large contact area with water, air, or clothing therein, It greatly improves the heating efficiency; it can be used not only for heating in the washing process, but also for heating the water in the rotating cylinder to improve the activity of the detergent; it can also be used for the drying process and the sterilization process for drying clothes. Or rotate the tube to increase the drying speed and inhibit the production of bacteria.

The inner cylinder 12 is in a rotating state during the washing process or the drying process or the sterilization process. By continuously rotating the inner cylinder 12, the heat transfer speed can be increased and the heating efficiency can be accelerated.

The rectifying device comprises a rectifier and a control circuit, wherein the rectifier is used for converting the household alternating current into a direct current voltage, and the control circuit is configured to convert the direct current voltage into a high frequency alternating voltage to supply the coil 1 to generate a high frequency alternating magnetic field. The rectifier and the control circuit for converting the DC voltage into a high-frequency alternating voltage may be a rectifier in the related art and a control circuit that converts a DC voltage into a high-frequency alternating voltage.

Preferably, in the embodiment, the inner cylinder 12 is made of a stainless steel material. It is also possible to use other metal materials, and it is only necessary to ensure that the inner cylinder 12 can generate heat in the high-frequency alternating magnetic field generated by the coil 11.

The coil 11 and the rectifying device in this embodiment are both disposed between the outer cylinder 15 and the casing 14. By the above arrangement, the coil 11 does not contact the inner cylinder 12 in the outer cylinder 15, and the high frequency alternating on the coil 11 is avoided. The current is input to the inner cylinder 12 to charge the inner cylinder 12 to affect the personal safety of the user.

The fixing frame 13 is fixed to the side wall of the outer cylinder 15, and the rectifying means is provided on the inner wall of the casing 14. In the heating process, the outer wall of the outer cylinder 15 and the inner wall of the casing 14 may form condensed water. In order to prevent the condensation water from falling onto the coil 11, the electric power is hidden. In the embodiment, the coil 11 is sealed and disposed in the insulating material. In order to avoid the magnetic field generated by the insulating material shielding coil 11 for sealing the coil 11, the above insulating material is required to be a non-metal material such as a resin material or the like.

In this embodiment, the housing 14 is provided with a fixing frame 13 made of an insulating material, and the coil 11 is fixed on the fixing frame 13. The coil 11 is fixed by the fixing frame 13, and since the rectifying device supplies the high-frequency alternating voltage to the coil 11, the fixing frame 13 is made of an insulating material to provide insulation, avoid leakage, and improve safety performance.

The coil 11 is a disc-shaped structure which is concentrically wound by a copper wire, and has a simple structure and is easy to manufacture, and has low processing cost.

The coil 11 is provided with a shielding structure for shielding the high-frequency alternating magnetic field generated by the coil 11 on one side of the outer cylinder 15. Preferably, the shielding structure is made of a high magnetic permeability material. Since the strength of the magnetic field on the side of the coil 11 opposite to the outer cylinder 15 can be weakened by the inner cylinder 12, by providing the shielding material, the strength of the magnetic field of the coil 11 on the side of the outer cylinder 15 can be weakened, so that the magnetic induction line passes through the shielding structure. The strength of the magnetic field can be reduced to a level beneficial to the human body, avoiding the magnetic field strength being too high and causing harm to the human body.

In the present embodiment, with respect to the drum washing machine shown in FIG. 1, the inner cylinder 12 is horizontally placed, and the coil 11 is provided on the side wall of the outer cylinder 15, so that the coil 11 does not contact water, thereby preventing leakage, and passing through the fixing frame 13 The insulation of the coil 11 is achieved by the insulating material of the sealing coil 11.

Embodiment 2

In this embodiment, the laundry treating device is a non-porous inner tub washing machine. As shown in FIG. 3, the laundry treating device is not provided with an outer cylinder, and the rotating cylinder is an inner cylinder 12 and is vertically placed. The rotating cylinder is made of stainless steel material, and the rotating cylinder is The upper portion is provided with a centrifugal hole 121, and the coil 11 is disposed away from the centrifugal hole 121; a lower portion of the rotating cylinder is provided with a water collecting tray 16 through which water discharged from the centrifugal hole 121 is received. The coil 1 is connected to the water collecting tray 16 via a fixing frame 13, and since the fixing frame 13 is made of an insulating material, and the coil 11 is sealed by an insulating material, the coil 11 does not come into contact with water, thereby providing a protective effect.

Embodiment 3

In the present embodiment, the laundry treating device is a pulsator washing machine. As shown in FIG. 4, the inner cylinder 12 is placed vertically, and the coil 15 is disposed on the side wall of the outer cylinder 11. Specifically, the coil 11 may be disposed on the side wall of the outer cylinder 15 and disposed near the middle or the lower portion of the outer cylinder 15. In the embodiment, the coil 11 is disposed near the middle of the outer cylinder 15.

Embodiment 4

The present embodiment provides a laundry treatment device, which is advantageous in solving the problem that the washing machine in the related art has the space occupied by the outer cylinder and the safety hazard when the heating member is installed at the bottom of the outer cylinder. The laundry treating apparatus is a washing machine. As shown in FIG. 5, the washing machine includes a metal inner cylinder 21, an insulated outer cylinder 22, a coil located outside the outer cylinder 22, and a controller for controlling the coil to be turned off and on. In this embodiment, the coil is an induction coil 23. When the heating program of the washing machine is started, the washing machine converts the current into a high-frequency alternating current exceeding the audio, and outputs the high-frequency alternating current to the magnetic induction coil 23, thereby generating a high-frequency alternating magnetic field, and the magnetic force generated by the magnetic induction coil 23 at this time. The sense line passes through the insulated outer cylinder 22 and acts on the metal inner cylinder 21, and a strong eddy current is generated in the inner cylinder 21 due to electromagnetic induction, and the eddy current overcomes the internal resistance of the inner cylinder 21 to complete the electric energy to the thermal energy. The inner cylinder 21 is heated by the switching, and the inner cylinder 21 which is subsequently heated heats the washing water in the outer cylinder 22.

In the present embodiment, the magnetic induction coil 23 is a high frequency resonant coil which is formed by concentric circles of copper wires. Further, the magnetic induction coil 23 has a disk-like structure, and the central axis of the magnetic induction coil 23 is perpendicular to the central axis of the outer cylinder 22. With the above arrangement, it is possible to ensure that the magnetic induction line generated by the magnetic induction coil 3 acts on the inner cylinder 21, ensuring that the inner cylinder 1 can be heated.

Referring to FIG. 6, the magnetic induction coil 23 is mounted on an insulating mounting frame 24. Specifically, the mounting bracket 24 is mounted on the outer wall of the outer cylinder 22. By providing the mounting bracket 24, it is possible to attach the outer wall of the outer cylinder 22 to ensure that the magnetic induction coil 23 is fixed in position and to heat the inner cylinder 21.

It can be understood that the magnetic induction coil 23 of the embodiment can also be directly mounted on the outer wall of the outer cylinder 22, that is, the mounting bracket 24 is not used. At this time, a groove or a buckle can be formed on the outer wall of the outer cylinder 22 as needed, and the magnetic sense is obtained. The coil 23 is fixedly mounted on the outer wall of the outer cylinder 22.

In the present embodiment, a plurality of the magnetic induction coils 23 may be provided, and the plurality of magnetic induction coils 23 may be evenly distributed outside the outer cylinder 22 in the axial direction of the outer cylinder 22 or evenly distributed outside the outer cylinder 22 in the circumferential direction of the outer cylinder 22. When a plurality of magnetic induction coils 23 are provided, correspondingly, a plurality of mounting brackets 24 are also provided. Considering the cost problem, only one magnetic induction coil 23 is provided in this embodiment. Since the inner cylinder 21 is rotated, the provision of a magnetic induction coil 23 can also achieve circumferential heating of the inner cylinder 21, that is, under the premise of saving production cost. It is possible to ensure that the inner cylinder 21 is uniformly heated and the heat is uniformly transferred to the washing water.

Further, in this embodiment, a plurality of magnetic strips are mounted on the outer side of the magnetic induction coil 23. By providing the magnetic strip, the magnetic induction line of the magnetic induction coil 23 can be absorbed, the leakage of the magnetic induction line can be reduced, and other parts of the washing machine can be avoided. influences.

In this embodiment, a temperature sensor 25 is further disposed at the bottom of the outer cylinder 22, and the temperature sensor 25 is connected to the controller, which is capable of detecting the ambient temperature in the outer cylinder 22 (including the temperature of the washing water and the air temperature when the outer cylinder 22 is dried) ). When the washing water is heated, the controller controls the magnetic induction coil 23 to energize the inner cylinder 21, and the temperature sensor 25 detects the temperature of the washing water in the outer cylinder 22. When the temperature of the washing water reaches the temperature required for washing, the temperature sensor 25 The temperature signal is sent to the controller, and the controller controls the magnetic induction coil 3 to be powered off. Similarly, when the washing machine dries the humid environment inside the outer cylinder 22, the temperature sensor 5 detects the temperature of the air in the outer cylinder 22. When the temperature of the air in the outer cylinder 22 reaches a preset temperature, the temperature sensor 25 sends a temperature signal. To the controller, the controller controls the magnetic induction coil 23 to be de-energized.

Further, in the present embodiment, the magnetic induction coil 23, the temperature sensor 25, and the controller can also heat the inner cylinder 21 by the magnetic induction coil 23 when the washing machine starts the laundry drying function, thereby achieving drying of the laundry. Further, by detecting the temperature in the outer cylinder 22 by the temperature sensor 25, it is possible to determine the drying time of the laundry.

In the above-mentioned washing machine of the present invention, the inner cylinder 21 is heated by the magnetic induction coil 23, on the one hand, the groove design of the outer cylinder 22 in the related art is avoided, and the risk caused by the sealing problem when the heating tube is installed is avoided, and the outer diameter is reduced. The space of the cylinder 22 is occupied, and the deposition of the detergent in the groove can be avoided. On the other hand, the magnetic induction coil 23 directly heats the inner cylinder 21, and the components required for heating can be reduced, and the rotation of the inner cylinder 21 can be matched. The inner cylinder 21 is uniformly heated, ensuring uniform heating of the washing water and improving the washing effect. Moreover, by the uniform heating of the inner cylinder 21, excessive condensed water can be avoided, and the safety performance of the washing machine is also improved.

This embodiment can achieve the following beneficial effects:

By providing a magnetic induction coil outside the outer cylinder, when the magnetic induction coil is energized, the generated magnetic induction line acts on the inner cylinder, and a strong eddy current is generated in the inner cylinder due to electromagnetic induction, and the eddy current overcomes the internal resistance flow of the inner cylinder. The conversion of electric energy to thermal energy causes heat generation of the inner cylinder, and then the washing water in the outer cylinder is heated by the heated inner cylinder. Through the above structure, the groove design of the existing outer cylinder is avoided and the risk caused by the sealing problem when the heating pipe is installed is avoided, the space occupation of the outer cylinder is reduced, and the deposition of the detergent in the groove can be avoided.

Moreover, the above structure can achieve uniform heating of the inner cylinder, avoiding condensation water inside the washing machine, and reducing safety hazards.

In addition, the above structure can also quickly realize internal drying of the outer cylinder, thereby realizing clean and hygienic laundry for the user, greatly improving the performance of the washing machine and improving the user experience.

Claims

A laundry treating apparatus comprising a coil and a rotating drum of a metal material, wherein the coil is energized to generate a high-frequency alternating magnetic field to cause the rotating cylinder to generate heat.
The laundry treating apparatus according to claim 1, further comprising a rectifying device configured to generate a high-frequency alternating voltage, said coil (11) being powered by said rectifying device, said rotating cylinder being placed Within the range of the high-frequency alternating magnetic field generated by the coil (11), the rotating cylinder within the range of the high-frequency alternating magnetic field generated by the coil (11) generates eddy currents during the rotation to cause the rotating cylinder itself to generate heat.
The laundry treating apparatus according to claim 2, wherein the laundry treating device is a drum washing machine or a pulsator washing machine, the laundry treating device further comprising an outer cylinder (15), an inner cylinder (12), and a casing (14) The rotating cylinder is the inner cylinder (12), and the coil (11) and the rectifying device are both disposed between the outer cylinder (15) and the casing (14).
The laundry treating apparatus according to claim 3, wherein a fixing frame (13) made of an insulating material is further disposed between the casing (14) and the outer cylinder (15), and the coil (11) is fixed It is disposed on the fixing frame (13).
The laundry treating apparatus according to claim 4, wherein the fixing frame (13) is fixed to a side wall of the outer cylinder (15), and the rectifying means is provided on an inner wall of the casing (14).
The laundry treating apparatus according to claim 2, wherein the laundry treating device is a non-perforated inner tub washing machine, and the rotating drum is provided with a centrifugal hole (121), and the coil (11) is away from the centrifugal hole (121) The bottom of the rotating cylinder is provided with a water receiving tray (16), the water receiving tray (16) is provided with a fixing frame (13), and the coil (11) is disposed on the fixing frame (13) .
The laundry treating apparatus according to any one of claims 1 to 6, wherein the coil (1) is sealingly disposed in an insulating material, and the insulating material is a non-metallic material.
The laundry treating apparatus according to any one of claims 1 to 6, wherein the laundry treating device is a pulsator washing machine or a drum washing machine, and an outer cylinder (15) of the laundry treating device is made of a non-metallic material; The inner cylinder (12) of the laundry treating device is made of stainless steel; or

The laundry treating apparatus is a non-porous inner tub washing machine, and the rotating drum is made of a stainless steel material.
The laundry treating apparatus according to any one of claims 1 to 6, wherein the coil (11) is a disk-like structure which is concentrically wound by a copper wire.
The laundry treating apparatus according to any one of claims 1 to 6, wherein a side of the coil (11) facing away from the rotating cylinder is further provided with a shield for shielding a high-frequency alternating magnetic field generated by the coil (11) structure.
The laundry treating apparatus according to claim 10, wherein the shield structure is made of a high magnetic permeability material.
The laundry treating apparatus according to claim 1, further comprising an inner cylinder (21) and an insulated outer cylinder (22), the rotating cylinder being the inner cylinder (21), the coil (23) Located outside the outer cylinder (22), the magnetic induction line generated when the coil (23) is energized can heat the inner cylinder (21).
The laundry treating apparatus according to claim 12, wherein said coil (23) has a disk-like structure, and a central axis of said coil (23) is perpendicular to a central axis of said outer cylinder (22).
The laundry treating apparatus according to claim 13, further comprising an insulated mounting bracket (24) mounted on an outer wall of said outer cylinder (22), said coil (23) ) placed on the mounting bracket (24).
The laundry treating apparatus according to claim 13, wherein the coil (23) is attached to an outer wall of the outer cylinder (22).
The laundry treating apparatus according to any one of claims 1 to 12, wherein a plurality of magnetic strips are mounted on an outer side of the coil (23) for reducing leakage of a magnetic line.
A laundry treating apparatus according to any one of claims 1 and 12 to 15, wherein said coil (23) is a high frequency resonant coil.
A laundry treating apparatus according to any one of claims 12-15, wherein said coil (23) is provided in plurality, and a plurality of said coils (23) are axially along said outer cylinder (22) The cloth is disposed on the outer side of the outer cylinder (22).
A laundry treating apparatus according to any one of claims 12-15, wherein said coil (23) is provided in plurality, and a plurality of said coils (23) are evenly distributed along a circumference of said outer cylinder (22) The outer side of the outer cylinder (22).
The laundry treating apparatus according to any one of claims 12-15, further comprising a temperature sensor (25) disposed at a bottom of the outer cylinder (22), the temperature sensor (25) for detecting The temperature of the wash water in the outer cylinder (22).
The laundry treating apparatus according to claim 20, further comprising a controller connected to said coil (23) and said temperature sensor (25), said controller being based on said temperature sensor (25) The transmitted temperature signal controls the on and off of the coil (23).