CN115182137A - Electromagnetic heating module, manufacturing process and clothes treatment device - Google Patents
Electromagnetic heating module, manufacturing process and clothes treatment device Download PDFInfo
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- CN115182137A CN115182137A CN202110361947.5A CN202110361947A CN115182137A CN 115182137 A CN115182137 A CN 115182137A CN 202110361947 A CN202110361947 A CN 202110361947A CN 115182137 A CN115182137 A CN 115182137A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 48
- 238000005406 washing Methods 0.000 description 56
- 239000004744 fabric Substances 0.000 description 11
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Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/779—Heating equipment
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention belongs to the technical field of clothes treatment devices, and discloses an electromagnetic heating module, a manufacturing process and a clothes treatment device, wherein the electromagnetic heating module is used for the clothes treatment device and comprises a support with a plate-shaped structure, an electromagnetic heating coil is fixedly arranged on the surface of one side of the support, and a magnet is fixedly arranged on the surface of the other side of the support; the electromagnetic heating coil and the magnet are fixed on the surface of the bracket in the molding process of the bracket. The electromagnetic heating device is applied to the clothes treatment device, can heat the water container made of metal materials, and accordingly realizes non-contact heating of water. Meanwhile, the electromagnetic heating coil and the magnet are directly fixed on the surface of the bracket in the process of forming the bracket, so that a complex assembly procedure is omitted, and the manufacturing process is simple.
Description
Technical Field
The invention belongs to the technical field of clothes treatment devices, and particularly relates to an electromagnetic heating module, a manufacturing process and a clothes treatment device.
Background
Most of the existing clothes treatment devices with heating function, such as washing machines, adopt a mode of arranging a recess at the bottom of an outer drum and installing heating devices such as a heating pipe in the recess to achieve the purpose of heating washing water. However, the heating device is arranged in the outer cylinder, which occupies the space of the outer cylinder and affects the capacity of the washing machine. Meanwhile, the heating device is positioned inside the outer tub and is in direct contact with the washing water, so that the requirement on the sealing performance is high. However, when the heating device works, the heating device and the surrounding are in a high temperature state for a long time, so that the aging of the sealing element is accelerated to a certain extent, the sealing failure is easily caused, the washing water permeates into the heating device, or the washing water seeps out from the mounting opening of the outer barrel for mounting the heating device, and the potential safety hazard is further caused.
On the other hand, during the heating process, the local environment temperature near the heating device is relatively high, and the temperature at other positions inside the washing machine shell is low, so that condensed water is easily generated at a position far away from the heating device on the inner wall of the shell. The inner wall of the shell of the washing machine is provided with the lead, if the shell is in a humid environment for a long time, the insulation layer on the surface of the lead is easy to age, the condition of ignition and discharge can be caused, burnt peculiar smell is generated at a light rate, and hidden mounting trouble is caused at a heavy rate.
In recent years, the washing machine industry has developed a non-porous inner-cylinder washing machine, which is different from the traditional washing machine that water is contained in an outer cylinder in the washing process, the inner cylinder contains clothes, and dewatering holes are not arranged on the inner cylinder, so that the inner cylinder 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 by the mode, the using amount of washing water is saved, and meanwhile, the dirt accumulation between the inner barrel and the outer barrel is avoided to a great extent, so that the condition that the dirt between the inner barrel and the outer barrel enters the inner barrel to pollute clothes is avoided, and the clean and sanitary washing is realized. 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 above problems, a solution for heating the washing water by using an electromagnetic heating module in the washing machine is proposed in the prior art. However, the temperature of the electromagnetic heating module is high when the electromagnetic heating module is heated, and if effective heat dissipation cannot be realized, the electromagnetic heating module is prone to overheating and breaks down, and use is affected. At present, one scheme for avoiding overheating of the electromagnetic heating module is to arrange a fan inside the electromagnetic heating module so as to enhance air flow and improve heat dissipation efficiency. The other solution is that the electromagnetic heating coil is made of the high-frequency cloud bus, and the high-frequency cloud bus has stronger high-temperature resistance and can bear higher working temperature, so that the overheating fault of the electromagnetic heating module can be avoided. However, the two schemes both cause the manufacturing cost of the electromagnetic heating module to be increased, and are not beneficial to popularization and application
Meanwhile, the conventional electromagnetic heating module generally has a fixing structure, such as a winding slot, disposed on the bracket, and the electromagnetic heating coil and the magnet for shielding the magnetic field are mounted on the bracket through the fixing structure during assembly. Therefore, the electromagnetic heating module is complex in structure and complicated in assembly process, the electromagnetic heating coil and the magnet are mounted on the bracket in the later period, and the electromagnetic heating coil or the magnet may fall off from the bracket due to vibration generated in the working process of the clothes treatment device, so that the use of the electromagnetic heating module is influenced.
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 an electromagnetic heating module, a manufacturing process and a clothes processing device.
In order to solve the technical problems, the invention adopts the technical scheme that:
an electromagnetic heating module for a clothes treatment device comprises a support with a plate-shaped structure, wherein an electromagnetic heating coil is fixedly arranged on one side surface of the support, and a magnet is fixedly arranged on the other side surface of the support; the electromagnetic heating coil and the magnet are fixed on the surface of the bracket in the molding process of the bracket.
Furthermore, the support comprises a supporting part in a disc structure, and the electromagnetic heating coil is spirally wound on the surface of one side of the supporting part to form a plurality of concentric circles which are concentric with the supporting part; the magnet is a bar magnet, is arranged along the radial direction of the supporting part and is fixed on the other side surface of the supporting part;
preferably, a plurality of bar magnets are provided at intervals in the circumferential direction of the support portion.
Further, the electromagnetic heating coil is partially embedded in one side surface of the support; and/or the magnet part is embedded in the other side surface of the support part.
Furthermore, the bracket also comprises a fixing part, and a fixing hole is formed in the fixing part;
preferably, the fixing portion is provided at an outer periphery of the support portion.
Another object of the present invention is to provide a manufacturing process of the above electromagnetic heating module, including:
respectively placing a magnet, a material sheet and an electromagnetic heating coil in a die, and enabling the electromagnetic heating coil and the magnet to be respectively positioned at two sides of the material sheet;
the material sheet is solidified and molded to form a support, and the magnet and the electromagnetic heating coil are fixed on the surface of the support;
and demolding to obtain the electromagnetic heating module.
Further, the material sheet is a rubber material sheet, and the rubber material sheet is subjected to vulcanization treatment and then is cured and molded to form the bracket.
Further, the material sheet is a sheet-shaped prepreg, and the sheet-shaped prepreg is subjected to heat treatment and then is subjected to thermal curing molding to form the support;
preferably, the sheet-like prepreg is an epoxy resin-preimpregnated carbon fiber or an epoxy resin-preimpregnated glass fiber.
Further, the sheet is bulk molding compound, and the bulk molding compound is subjected to pressurization and heating treatment in a mold and then is subjected to thermal curing forming to form the support.
Further, the sheet is a sheet molding compound, and the sheet molding compound is subjected to pressure and heat treatment in a mold and then is subjected to thermal curing molding to form the bracket.
Still another object of the present invention is to provide a clothes treating apparatus comprising the above electromagnetic heating module;
preferably, the device also comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is arranged in the outer cylinder, and the cylinder wall of the inner cylinder is made of a metal material capable of generating eddy current in an alternating magnetic field;
preferably, the electromagnetic heating module is arranged below the outer cylinder and connected with the cylinder wall of the outer cylinder;
more preferably, the electromagnetic heating module is arranged on the cylinder wall of the outer cylinder in an area close to the cylinder bottom of the outer cylinder.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
In the electromagnetic heating module, the electromagnetic heating coil and the magnet are respectively arranged on the surfaces of two sides of the bracket with the plate-shaped structure, and the surface of one side of the electromagnetic heating coil is directly exposed in the air, so that the electromagnetic heating module has a good heat dissipation effect. The magnet on the other side can play a role in shielding a magnetic field and prevent the magnetic field from leaking, so that the magnetic field generated by the electromagnetic heating coil more efficiently acts on the heated water container, and the heating efficiency is improved.
In the electromagnetic heating module, the electromagnetic heating coil and/or the magnet are partially embedded into the surface of the supporting part, so that the contact area between the electromagnetic heating coil and the supporting part and the contact area between the magnet and the supporting part are increased, the electromagnetic heating coil and the magnet are more firmly fixed on the supporting part, and the phenomenon that the electromagnetic heating coil or the magnet falls off from the supporting part is avoided.
In the manufacturing process of the electromagnetic heating module, a support is formed by solidifying and molding a material sheet, such as a rubber material sheet, a fiber material sheet of prepreg resin, a bulk or sheet molding compound and the like, an electromagnetic heating coil and a magnet are put into a mold together with the material sheet, and the electromagnetic heating coil and the magnet can be adhered to the material on the surface of the material sheet into a whole in the solidifying process of the material sheet surface material, so that the material sheet is directly fixed on the surface of the formed support after being solidified and molded, a complex assembly process is omitted, and the manufacturing process is greatly simplified.
The electromagnetic heating module is arranged in the clothes treatment device, so that the non-contact heating of the water contained in the inner cylinder is realized. The electromagnetic heating module is arranged below the outer barrel, can intensively heat the bottom area of the inner barrel, namely the concentrated part of the washing water, and has higher heating efficiency. On the other hand, the electromagnetic heating module is not in direct contact with water during the work of the clothes treatment device, so that the potential safety hazard caused by the contact of the electromagnetic heating coil and the water is further reduced.
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 and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention to the proper form disclosed herein. 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 an electromagnetic heating module in an embodiment of the present invention;
FIG. 2 is a schematic view of an electromagnetic heating module according to another aspect of the present invention;
FIG. 3 is a top view of an electromagnetic heating module in an embodiment of the present invention;
FIG. 4 isbase:Sub>A schematic view of section A-A of FIG. 3 of the present invention;
fig. 5 is a schematic structural view of a clothes treating apparatus according to a sixth embodiment of the present invention.
In the figure: 100. a housing; 101. footing; 200. an outer cylinder; 210. the front part of the outer cylinder; 211. a water outlet; 220. the rear part of the outer cylinder; 300. a shock absorber; 400. an electromagnetic heating module; 401. an electromagnetic heating coil; 402. a magnet; 404. a support; 430. a fixed part; 431. a fixing hole; 460. a support portion.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments 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", "front", "back", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, 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" and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1 to 4, the present embodiment provides an electromagnetic heating module 400 for a laundry treating apparatus, including a bracket 404 having a plate-shaped structure, an electromagnetic heating coil 401 fixedly provided on one side surface of the bracket 404, and a magnet 402 fixedly provided on the other side surface. The electromagnetic heating coil 401 and the magnet 402 are fixed to the surface of the holder 404 during the molding of the holder 404.
In this embodiment, the electromagnetic heating coil 401 fixed on the upper surface of the bracket 404 may generate a high-frequency alternating magnetic field when a high-frequency alternating current is applied, and may be installed inside the laundry treatment apparatus, and may excite an eddy current effect in the laundry treatment drum made of a metal material or other water containers through the generated high-frequency alternating magnetic field, so that the laundry treatment drum or other water containers may generate heat by themselves, thereby heating water under a non-contact condition. The support 404 is made of an insulating material that is not excited by a magnetic field, and does not generate heat under the action of the electromagnetic heating coil 401, and does not affect the magnetic field generated by the electromagnetic heating coil 401.
The magnet 402 fixed to the lower surface of the bracket 404 functions to shield the magnetic field and block most of the magnetic field radiated downward, thereby reducing the portion of the magnetic field generated by the electromagnetic heating coil 401 radiated downward and causing almost all of the generated magnetic field to radiate upward. Therefore, the generated high-frequency alternating magnetic field can be more concentrated, and the heating efficiency of the high-frequency alternating magnetic field to the clothes treatment drum is improved. The electromagnetic heating coil 401 and the magnet 402 are separated by the bracket 404 and do not contact with each other, so that the influence of the contact between the magnet 402 and a wire forming the electromagnetic heating coil 401 is avoided.
Meanwhile, the electromagnetic heating coil 401 and the magnet 402 are respectively disposed on the upper and lower side surfaces of the bracket 404 of the plate structure, and the upper side surface of the electromagnetic heating coil 401 is directly exposed to the air, thereby having a good heat dissipation effect. The bracket 404 is of a plate-shaped structure, so that the whole electromagnetic heating module 400 has a smaller thickness and a larger heating area, the heating efficiency is high, the occupied space is small, and the internal space of the clothes treatment device is saved.
On the other hand, the electromagnetic heating coil 401 and the magnet 402 are directly fixed on the surface of the bracket 404 during the molding process of the bracket 404, so that a complex mounting structure for fixing the electromagnetic heating coil 401 and the magnet 402 is not required, or the electromagnetic heating coil 401 and the magnet 402 are fixed through an additional process step, and the manufacturing process flow is simplified.
In a further aspect of this embodiment, the support 404 includes a support 460 in a disc structure, and the electromagnetic heating coil 401 is spirally wound on a side surface of the support 460 to form a plurality of concentric circles concentric with the support 460. The magnet 402 is a bar magnet 402, disposed in a radial direction of the support 460, and fixed to the other side surface of the support 460.
Specifically, the electromagnetic heating coil 401 is formed by winding copper wires with insulating layers coated on the surfaces, two adjacent circles of copper wires are in contact winding or have a fine interval, and the diameter of the circumference surrounded by the outermost circle of copper wires is as close as possible to the outer diameter of the supporting portion 460.
Preferably, a plurality of bar magnets 402 are provided at intervals in the circumferential direction of the support portion 460, the plurality of bar magnets 402 being evenly distributed in the circumferential direction.
In the above scheme, the electromagnetic heating coil 401 spirally wound to form a plurality of concentric circles is advantageous to generate a uniform magnetic field, so that uniform heating of the laundry treating drum can be realized. The plurality of bar magnets 402 are spaced apart from each other in the circumferential direction of the support portion 460, and thus a uniform shielding effect can be provided under the electromagnetic heating coil 401, thereby making the magnetic field radiated to the laundry treating drum more uniform.
In a further aspect of the present embodiment, the electromagnetic heating coil 401 is partially embedded in one side surface of the supporting portion 460; and/or the magnet 402 is partially embedded in the other side surface of the support 460.
In the above-described embodiment, the electromagnetic heating coil 401 and/or the magnet 402 are partially embedded in the surface of the support 460, and the contact area between the electromagnetic heating coil 401 and the magnet 402 and the support 460 can be increased, so that the electromagnetic heating coil 401 and the magnet 402 are more firmly fixed to the support 460, and the electromagnetic heating coil 401 or the magnet 402 is prevented from falling off the support 460.
Specifically, in this embodiment, the support 404 is made by curing and molding a material sheet, the electromagnetic heating coil 401 and the magnet 402 are placed at appropriate positions on two sides of the material sheet before curing and molding the material sheet, and the material on the surface of the material sheet before curing has certain fluidity, can wrap the lower surface of the electromagnetic heating coil 401 and the upper surface of the magnet 402, and can also penetrate into a gap between two adjacent circles of copper wires in the electromagnetic heating coil 401. After the curing molding, the bottom of the electromagnetic heating coil 401 and the top of the magnet 402 are wrapped by the material forming the bracket 404, so as to be firmly fixed on the surface of the support 460, and not to be easily detached.
In this embodiment, the bracket 404 further includes a fixing portion 430, and the fixing portion 430 is provided with a fixing hole 431. The electromagnetic heating module 400 may be installed inside the laundry treating apparatus, for example, on the wall of the outer tub of the washing machine, through the fixing hole 431 of the fixing portion 430, and further, the high-frequency ac power is introduced to excite the inner tub in the outer tub to generate the eddy current effect, thereby achieving the purpose of heating the washing water.
Specifically, the fixing portion 430 is disposed at the outer periphery of the supporting portion 460, so that when the electromagnetic heating module 400 is installed, the electromagnetic heating module 400 can be made to be as close as possible to the installation surface, that is, the wall of the outer cylinder, and further closer to the heated inner cylinder, thereby achieving higher heating efficiency.
In this embodiment, the electromagnetic heating module 400 is formed by fixing the electromagnetic heating coil 401 and the magnet 402 by the bracket 404 having a plate-shaped structure, the electromagnetic heating coil 401 and the magnet 402 are respectively located on the two side surfaces of the bracket 404, and the upper surface of the electromagnetic heating coil 401 is directly exposed in the air, so that a high heat dissipation efficiency can be achieved, and the electromagnetic heating module 400 is prevented from being overheated and affected in use. The whole electromagnetic heating module 400 is in a thin plate shape, so that the occupied space can be saved under the condition of providing a certain heating area, and the influence of the arrangement of the electromagnetic heating module 400 on the installation of other elements in the clothes treatment device is avoided.
Example two
As shown in fig. 1 to 4, the present embodiment provides a manufacturing process of the electromagnetic heating module 400 according to the first embodiment, including:
respectively placing a magnet 402, a material sheet and an electromagnetic heating coil 401 in a die, and enabling the electromagnetic heating coil 401 and the magnet 402 to be respectively positioned at two sides of the material sheet;
the material sheet is solidified and molded to form a bracket 404, and the magnet 402 and the electromagnetic heating coil 401 are fixed on the surface of the bracket 404;
and demolding to obtain the electromagnetic heating module 400.
In this embodiment, the bracket 404 formed by curing may have defects such as flash and protrusion, so as to improve the overall aesthetic degree of the electromagnetic heating module 400 and avoid the defects from affecting the installation when the electromagnetic heating module 400 is installed in the laundry processing apparatus at a later stage, for example, the fixing hole 431 is blocked to affect the installation, and the defects can be removed by polishing and correction, so that the surface of the electromagnetic heating module 400 is smoother.
In the above-described scheme, the electromagnetic heating coil 401 and the magnet 402 are placed in the mold together with the web forming the holder 404, and the material of the web surface, that is, the portion thereof in contact with the electromagnetic heating coil 401 and the magnet 402 is adhered to the electromagnetic heating coil 401 and the magnet 402 during the curing process, so that the electromagnetic heating coil 401 and the magnet 402 can be fixed to the surface of the formed holder 404 after the curing is completed. The electromagnetic heating module 400 is integrally formed in the mold without a subsequent assembly process or a subsequent process for fixing the electromagnetic heating coil 401 and the magnet 402, so that the manufacturing process is greatly simplified.
Further, the rubber sheet is a rubber sheet, and the rubber sheet is cured and molded after being subjected to a vulcanization process to form the bracket 404.
Specifically, in this embodiment, the rubber sheet is cured and molded by heat vulcanization to form the bracket 404, and the unvulcanized rubber sheet is cut into a shape and a size similar to those of the bracket 404 to be obtained. Then, the magnet 402, the rubber sheet, and the electromagnetic heating coil 401 are sequentially placed in a mold, the rubber sheet is positioned between the magnet 402 and the electromagnetic heating coil 401, and the mold is closed, and heat treatment and, if necessary, pressure treatment are performed. After a certain time, the electromagnetic heating coil 401 and the magnet 402 are adhered and fixed to both side surfaces of the rubber sheet, and the rubber sheet is cured and molded by itself to form the holder 404. After demolding, the electromagnetic heating module 400 in which the electromagnetic heating coil 401 and the magnet 402 are respectively fixed to the two side surfaces of the support 404 can be obtained.
EXAMPLE III
As shown in fig. 1 to 4, the present embodiment is different from the second embodiment in that: the material sheet is a sheet-shaped prepreg, and the sheet-shaped prepreg is subjected to heat treatment and then is subjected to thermal curing molding to form the support 404.
Prepreg is a composition of a resin matrix and a reinforcement prepared by impregnating continuous fibers or fabrics with the resin matrix, and is generally used as an intermediate material for producing a composite material.
Specifically, in this embodiment, the resin matrix is made of epoxy resin, and the reinforcement is made of carbon fiber or glass fiber. That is, the sheet-like prepreg is carbon fiber pre-impregnated with epoxy resin or glass fiber pre-impregnated with epoxy resin.
In detail, the manufacturing process of the present embodiment will be described by taking a carbon fiber cloth as an example.
Cutting according to the shape and size of the required bracket 404 to obtain a plurality of pieces of carbon fiber cloth basically matched with the shape and size of the bracket 404, and pre-soaking the carbon fiber cloth with epoxy resin; or cutting the carbon fiber cloth after the carbon fiber cloth is presoaked with the epoxy resin to obtain a plurality of pieces of carbon fiber cloth presoaked with the epoxy resin;
putting the magnet 402 into a specific position in a mold, then overlapping a plurality of pieces of carbon fiber cloth presoaked with epoxy resin together, and putting the carbon fiber cloth above the magnet 402 in the mold;
placing the electromagnetic heating coil 401 above the plurality of pieces of carbon fiber cloth, and closing the dies;
heating and pressurizing the mould to cure and mold the epoxy resin, and connecting a plurality of pieces of carbon fiber cloth, the electromagnetic heating coils 401 and the magnets 402 on the upper side and the lower side into a whole;
and demolding, polishing and correcting to obtain the electromagnetic heating module 400.
In this embodiment, the bracket 404 is made of a composite material of carbon fiber or glass fiber and epoxy resin, and has high strength and low density, so that the electromagnetic heating module 400 has sufficient strength and is not easy to damage, and meanwhile, the electromagnetic heating module 400 has light weight, so that the weight of the clothes processing device is not significantly increased after the electromagnetic heating module 400 is installed.
Example four
As shown in fig. 1 to 4, the present embodiment is different from the first embodiment in that: the web is Bulk Molding Compound (BMC) that is heat cured and formed in a mold under pressure and heat to form the stent 404.
BMC is a heat-set plastic that incorporates various inert fillers, fiber reinforcements, catalysts, stabilizers, and pigments. In general, BMC is mainly prepared by thoroughly mixing chopped glass fibers, unsaturated resins, fillers, and various additives. The BMC adopted in the embodiment is glass fiber reinforced unsaturated polyester thermosetting plastic.
In this embodiment, the BMC is formed into the bracket 404 via a press forming process. Specifically, the mold comprises two parts which are arranged in a split manner, the two parts are respectively provided with a space for accommodating and limiting the electromagnetic heating coil 401 and the magnet 402, the magnet 402 and the electromagnetic heating coil 401 are respectively placed in the corresponding positions, and then the BMC to be molded is placed above the magnet 402. The mold is closed so that the two parts of the mold snap together and the BMC inside fills the mold cavity in the mold to form the shape of the bracket 404. The entire mold is subjected to pressurization and heating treatment, and is kept at a certain pressure and temperature for a certain time, and the BMC is cured and molded to form the holder 404, and the electromagnetic heating coil 401 and the magnet 402 are fixed to the surface thereof. And demolding, polishing and correcting to obtain the electromagnetic heating module 400.
EXAMPLE five
As shown in fig. 1 to 4, the present embodiment is different from the fourth embodiment in that: the web is a Sheet Molding Compound (SMC) that is molded by thermal curing after being subjected to pressure and heat in a mold to form the stent 404.
SMC is a type of sheet molding compound made by impregnating a fiber or chopped strand mat with a resin paste and covering both sides with polyethylene films. When in use, the polyethylene film is cut according to a certain shape and size, then the polyethylene films on the two sides are removed, the polyethylene films are stacked in a mould for heating and pressurizing molding, and the product with the required shape can be obtained after demoulding.
In this embodiment, the magnet 402 is placed in a specific position in the mold, then one or more sheets of SMC are placed in the mold above the magnet 402 according to the thickness requirement of the bracket 404, and finally the electromagnetic heating coil 401 is placed on the surface of the SMC. After the mold is closed, the SMC is thermally cured and molded in the mold by pressing and heating, and the electromagnetic heating coil 401 and the magnet 402 are adhered and fixed on the surface. And (5) demolding, polishing and correcting to obtain the electromagnetic heating module 400.
Because the frame 404 is a plate-like structure, multiple sheets of SMC having the same shape and size can be cut and stacked in the molding cavity of the mold, so that the final frame 404 fits the desired structure. In this embodiment, SMC is used as the web forming the frame 404, and the operation is simple.
EXAMPLE six
As shown in fig. 5, the present embodiment provides a laundry treating apparatus including the electromagnetic heating module 400 according to the first embodiment.
Specifically, the present embodiment is described taking a washing machine as an example. The washing machine comprises an outer barrel 200 and an inner barrel, wherein the inner barrel is arranged in the outer barrel 200, and the wall of the inner barrel is made of a metal material capable of generating eddy current in an alternating magnetic field.
Preferably, the inner tub of the washing machine of the present embodiment may independently contain washing water during washing. Specifically, the wall of the inner cylinder is not provided with dewatering holes, and the inner cylinder is in a closed state in the washing process and can independently contain washing water. The wall of the inner barrel is provided with a drain hole which is plugged by a sealing component in the washing process, and when the inner barrel reaches a certain rotating speed, the sealing component can open the drain hole under the action of centrifugal force to realize the drainage of washing water. The wall of the outer tub 200 is provided with a water outlet 211 communicated with the water discharge structure, and water discharged from the inner tub enters the outer tub 200 and is discharged out of the washing machine through the water outlet 211 and the water discharge structure.
The wall of the inner cylinder is made of metal, and the outer cylinder 200 is made of plastic that does not excite the eddy current effect in the magnetic field. An electromagnetic heating module 400 is mounted on the outside of the tub 200. As shown in fig. 1 and 5, after the washing machine starts a heating program, a voltage, such as 220V household alternating current, is converted into direct current through a bridge rectifier, and then converted into high-frequency alternating current through an IGBT power tube, and the high-frequency alternating current is input to an electromagnetic heating coil 401 in an electromagnetic heating module 400, so that the electromagnetic heating coil 401 can generate a high-frequency alternating magnetic field. The electromagnetic induction lines of the high-frequency alternating magnetic field can penetrate through the outer cylinder 200 and act on the inner cylinder made of metal, so that the inner cylinder generates eddy current under the action of electromagnetic induction, the eddy current overcomes the internal resistance of the inner cylinder and completes the conversion of electric energy to heat energy when flowing, the inner cylinder is heated, and accordingly washing water in the inner cylinder is heated.
In the heating process, the inner cylinder is controlled to rotate in the outer cylinder 200, so that the inner cylinder is heated uniformly, the washing water contained in the inner cylinder is uniformly transferred, and the heating effect is better. A temperature sensor is provided at the bottom of the tub 200, and when the temperature detected by the temperature sensor reaches a set temperature, that is, the washing water reaches a predetermined washing temperature, the heating process is stopped, and the electromagnetic heating module 400 stops heating.
In a preferred embodiment of the present embodiment, the electromagnetic heating module 400 is disposed below the outer cylinder 200 and connected to the cylindrical wall of the outer cylinder 200. Fig. 5 is a bottom view of the washing machine of the present embodiment, in which a bottom region of the casing 100 is removed to show an internal structure of the washing machine. Feet 101 are provided at four corners of the bottom surface of the casing 100, and the outer cylinder 200 is supported inside the casing 100 by means of the damper 300. The fixing portion 430 is provided on the outer periphery of the electromagnetic heating module 400, a fixing hole 431 is formed in the fixing portion 430, and the electromagnetic heating module 400 is mounted on the cylindrical wall of the outer cylinder 200 by passing a screw through the fixing hole 431.
Since the washing water is located in the bottom region of the inner tub in the inner tub, that is, the inner tub rotated to the bottom is in direct contact with the washing water, the electromagnetic heating module 400 is installed below the outer tub 200, and the bottom region of the inner tub can be intensively heated, so that the purpose of directly heating the washing water is achieved, and the heating efficiency is higher. Meanwhile, the problem that the overheating fault of the electromagnetic heating module 400 is easily caused because the heated area of the inner barrel is not contacted with washing water and the temperature rises too fast is avoided.
In a further preferred aspect of the present embodiment, the electromagnetic heating module 400 is provided on the wall of the outer tub 200 in a region close to the bottom of the outer tub 200.
In this embodiment, the wall of the outer cylinder 200 includes a front part 210 close to the opening and a rear part 220 connected to the bottom. The drain outlet 211 is provided in the outer tub front 210, and the electromagnetic heating module 400 is mounted in the outer tub rear 220. The above arrangement allows both the electromagnetic heating module 400 and the drain port 211 to be disposed in the lowest region of the cylindrical wall of the outer cylinder 200 without interfering with each other.
As shown in fig. 1 to 5, in the present embodiment, when the electromagnetic heating module 400 is installed, the electromagnetic heating coil 401 is installed to face the cylindrical wall of the outer cylinder 200. When the electromagnetic heating module 400 works, the electromagnetic heating coil 401 can generate a high-frequency alternating magnetic field to excite the inner cylinder to generate an eddy current effect, so as to heat and heat the washing water. The magnet 402 below the electromagnetic heating coil 401 can shield the generated magnetic field, so that the magnetic field is prevented from leaking in the direction back to the inner cylinder, the magnetic field generated by the electromagnetic heating coil 401 can more efficiently act on the inner cylinder, and the heating efficiency is improved.
The electromagnetic heating coil 401 and the magnet 402 are respectively fixed on the upper surface and the lower surface of the bracket 404, and the upper side surface of the electromagnetic heating coil 401 is directly exposed in the air, so that a good heat dissipation effect is achieved, and the phenomenon that the work of the electromagnetic heating module 400 is influenced due to an overheating fault can be avoided. The electromagnetic heating coil 401 is formed by winding a copper wire with an insulating layer coated on the surface, and the electromagnetic heating module 400 is installed outside the outer tub 200, and generally does not contact with the washing water, so that even if the outer tub 200 has a water seepage phenomenon, the seepage water amount is small, and the insulating layer is protected enough to avoid the short circuit fault caused by the washing water.
The washing machine of the present embodiment realizes the heating function of the washing water by providing the electromagnetic heating module 400, and realizes the purpose of heating the washing water of the washing machine without water between the inner tub and the outer tub 200. The electromagnetic heating module 400 is arranged below the outer tub 200, and is not in contact with the washing water during the operation of the washing machine, and the electromagnetic heating coil 401 can be directly arranged on the surface of the bracket 404 facing the outer tub 200, that is, the upper surface of the electromagnetic heating coil 401 can be exposed to the air, so that the electromagnetic heating coil 401 has a good heat dissipation effect without worrying about the situation that the washing water causes the electromagnetic heating coil 401 to be short-circuited, and the overheating fault can be effectively avoided.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An electromagnetic heating module for a clothes processing device is characterized by comprising a bracket with a plate-shaped structure, wherein an electromagnetic heating coil is fixedly arranged on the surface of one side of the bracket, and a magnet is fixedly arranged on the surface of the other side of the bracket; the electromagnetic heating coil and the magnet are fixed on the surface of the bracket in the molding process of the bracket.
2. The electromagnetic heating module as set forth in claim 1, wherein said support includes a support portion in a disk configuration, said electromagnetic heating coil being helically wound around a side surface of said support portion to form a plurality of concentric circles concentric with said support portion; the magnet is a bar magnet, is arranged along the radial direction of the supporting part and is fixed on the other side surface of the supporting part;
preferably, a plurality of bar magnets are provided at intervals in the circumferential direction of the support portion.
3. The electromagnetic heating module as set forth in claim 2, wherein said electromagnetic heating coil is partially embedded in one side surface of the support; and/or the magnet part is embedded in the other side surface of the support part.
4. The electromagnetic heating module as set forth in claim 2 or 3, wherein said support further comprises a fixing portion, said fixing portion being provided with a fixing hole;
preferably, the fixing portion is provided at an outer periphery of the support portion.
5. A process for manufacturing an electromagnetic heating module as set forth in any one of claims 1-4, comprising:
respectively placing a magnet, a material sheet and an electromagnetic heating coil in a die, and enabling the electromagnetic heating coil and the magnet to be respectively positioned at two sides of the material sheet;
the material sheet is solidified and molded to form a support, and the magnet and the electromagnetic heating coil are fixed on the surface of the support;
and demolding to obtain the electromagnetic heating module.
6. The manufacturing process of claim 5, wherein the sheet is a rubber sheet that is cured to form the stent after a vulcanization process.
7. The manufacturing process according to claim 5, wherein the web is a sheet-shaped prepreg, and the sheet-shaped prepreg is subjected to heat treatment and then is subjected to thermal curing molding to form the bracket;
preferably, the sheet-like prepreg is carbon fiber pre-impregnated with epoxy resin or glass fiber pre-impregnated with epoxy resin.
8. The manufacturing process of claim 5, wherein the sheet is a bulk molding compound that is thermally cured and formed after being subjected to pressure and heat in a mold to form the stent.
9. The manufacturing process according to claim 5, wherein the sheet is a sheet molding compound, and the sheet molding compound is subjected to a pressing and heating treatment in a mold and then is subjected to a thermal curing forming process to form the stent.
10. A laundry treatment apparatus, characterized by comprising an electromagnetic heating module according to any one of claims 1-4;
preferably, the device also comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is arranged in the outer cylinder, and the cylinder wall of the inner cylinder is made of a metal material capable of generating eddy current in an alternating magnetic field;
preferably, the electromagnetic heating module is arranged below the outer cylinder and connected with the cylinder wall of the outer cylinder;
more preferably, the electromagnetic heating module is arranged on the cylinder wall of the outer cylinder in an area close to the cylinder bottom of the outer cylinder.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110361947.5A CN115182137B (en) | 2021-04-02 | 2021-04-02 | Electromagnetic heating module, manufacturing process and clothes treatment device |
| PCT/CN2022/078546 WO2022206258A1 (en) | 2021-04-02 | 2022-03-01 | Electromagnetic heating module, manufacturing process, and clothes treatment device |
| EP22778443.6A EP4317574A1 (en) | 2021-04-02 | 2022-03-01 | Electromagnetic heating module, manufacturing process, and clothes treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110361947.5A CN115182137B (en) | 2021-04-02 | 2021-04-02 | Electromagnetic heating module, manufacturing process and clothes treatment device |
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| CN115182137A true CN115182137A (en) | 2022-10-14 |
| CN115182137B CN115182137B (en) | 2023-11-14 |
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| CN112210946A (en) * | 2019-07-11 | 2021-01-12 | 青岛海尔洗衣机有限公司 | Washing machine and control method thereof |
| WO2021040374A1 (en) * | 2019-08-26 | 2021-03-04 | 엘지전자 주식회사 | Clothes treatment apparatus |
| CN112481945A (en) * | 2019-08-20 | 2021-03-12 | 青岛海尔滚筒洗衣机有限公司 | Washing machine and control method thereof |
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| JP2000213868A (en) * | 1999-01-25 | 2000-08-02 | Matsushita Electric Ind Co Ltd | Dryer fro water-containing matter |
| CN202210877U (en) * | 2011-09-14 | 2012-05-02 | 熊铭刚 | Novel electromagnetic heating disc |
| CN104066218A (en) * | 2013-03-22 | 2014-09-24 | 美的集团股份有限公司 | Coil panel bracket component, die and manufacturing method thereof |
| CN112048883A (en) * | 2019-06-06 | 2020-12-08 | 青岛海尔洗衣机有限公司 | Washing machine and control method thereof |
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| CN115182137B (en) | 2023-11-14 |
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Effective date of registration: 20231007 Address after: 400026 No.303, Block E, No.1 Gangcheng South Road, Jiangbei District, Chongqing Applicant after: Chongqing Haier Front-loading Washing Machine Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Applicant before: Haier Zhijia Co.,Ltd. |
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