CN116770565A - Electromagnetic heating module and clothes treatment device - Google Patents
Electromagnetic heating module and clothes treatment device Download PDFInfo
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- CN116770565A CN116770565A CN202210230811.5A CN202210230811A CN116770565A CN 116770565 A CN116770565 A CN 116770565A CN 202210230811 A CN202210230811 A CN 202210230811A CN 116770565 A CN116770565 A CN 116770565A
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- heating module
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 116
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 236
- 239000010959 steel Substances 0.000 claims abstract description 236
- 239000007769 metal material Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 13
- 238000005406 washing Methods 0.000 description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 239000011241 protective layer Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000003570 air Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000012466 permeate Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The invention belongs to the technical field of clothes treatment devices, and discloses an electromagnetic heating module and a clothes treatment device, wherein the electromagnetic heating module comprises a mounting bracket and a coil arranged on the mounting bracket; the coil is provided with an annular structure and is used for generating an alternating magnetic field radiating outwards, a hollowed-out area is formed around the inner periphery of the coil, inner magnetic steel used for reinforcing the intensity of the alternating magnetic field is arranged in the hollowed-out area, one side of the inner magnetic steel, which faces the mounting bracket, protrudes out of the surface of the coil, which faces the mounting bracket, and the other side of the inner magnetic steel is at least flush with the surface of the other side of the coil. According to the invention, the inner magnetic steel is arranged on the inner periphery of the coil, and the inner magnetic steel forms a protruding structure at least on one side of the coil facing the mounting bracket and opposite to the surface of the coil, so that the magnetic field intensity generated in the hollowed-out area can be enhanced, the alternating magnetic field radiated outwards by the electromagnetic heating module can cover the annular area of the coil, the hollowed-out area can be covered, and the heating efficiency can be remarkably improved.
Description
Technical Field
The invention belongs to the technical field of clothes treatment devices, and particularly relates to an electromagnetic heating module and a clothes treatment device.
Background
In recent years, in order to solve the problems that dirt is easy to accumulate between the inner barrel and the outer barrel of the washing machine and the washing is difficult to clean, the industry of the washing machine develops a hole-free inner barrel washing machine, namely, a dewatering hole is not arranged on the inner barrel any more, so that the inner barrel can independently hold washing water in the washing process. Through the mode, the condition of water storage between the inner cylinder and the outer cylinder in the washing process can be avoided, the consumption of washing water is saved, and meanwhile, dirt accumulation between the inner cylinder and the outer cylinder is avoided to a great extent, so that dirt between the inner cylinder and the outer cylinder is prevented from entering the inner cylinder to pollute clothes, and the clothes washing is clean and sanitary. However, since the inner cylinder and the outer cylinder are anhydrous in the washing process, the washing water cannot be heated by arranging a heating pipe in the outer cylinder in the conventional washing machine.
In order to solve the above problems, a scheme of heating washing water using an electromagnetic heating device in a washing machine has been proposed in the prior art. For example, chinese patent application No. 201910767689.3 discloses a washing machine and a control method thereof, the washing machine comprising: an inner cylinder having a washing chamber for independently holding washing water; an outer cylinder sleeved outside the inner cylinder; the electromagnetic heating device is arranged on the side wall of the outer cylinder and corresponds to the side wall of the inner cylinder.
However, in the scheme, the electromagnetic heating device is electrified through the electromagnetic coil inside, so that an alternating magnetic field radiating outwards is generated to heat the inner cylinder, and the aim of heating the washing water is fulfilled. However, the middle part of the electromagnetic coil is often hollowed out, the magnetic induction wires of the alternating magnetic field are more concentrated in a range which can be covered by the projection of the electromagnetic coil to the direction of the inner cylinder, and the magnetic induction wires are relatively sparse for the hollowed-out area of the middle part, so that the intensity of the alternating magnetic field is weaker. In this way, the intensity distribution of the alternating magnetic field acting on the inner cylinder is uneven, which affects the heating efficiency of the electromagnetic heating device.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an electromagnetic heating module and a clothes treatment device which can strengthen the intensity of an alternating magnetic field radiated in a coil hollowed-out area.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
an electromagnetic heating module comprises a mounting bracket and a coil arranged on the mounting bracket; the coil is provided with an annular structure and is used for generating an alternating magnetic field radiating outwards, a hollowed-out area is formed around the inner periphery of the coil, inner magnetic steel used for reinforcing the intensity of the alternating magnetic field is arranged in the hollowed-out area, one side of the inner magnetic steel, which faces the mounting bracket, protrudes out of the surface of the coil, which faces the mounting bracket, and the other side of the inner magnetic steel is at least flush with the surface of the other side of the coil.
Further, the inner magnetic steel is of a sheet-shaped structure with a certain thickness, and the coil is spirally wound around the periphery of the inner magnetic steel; the coil has a certain thickness in the thickness direction of the inner magnetic steel, and the thickness of the inner magnetic steel is larger than that of the coil.
Further, the inner magnetic steel has a certain extension length in a direction perpendicular to the thickness direction thereof, and the inner magnetic steel comprises:
the first inner magnetic steel sheet comprises two sheets which are respectively arranged at two ends of the inner magnetic steel in the length extending direction;
the second inner magnetic steel sheet at least comprises two sheets, is distributed along the length extension direction of the inner magnetic steel and is arranged between the two first inner magnetic steel sheets.
Further, bottom magnetic steel is arranged between the coil and the mounting bracket; the bottom surface magnetic steel is paved on the bottom wall of the mounting bracket and is provided with a hollow area corresponding to the hollow area of the inner periphery of the coil, and the part of the inner magnetic steel protruding out of the surface of the coil is arranged in the hollow area of the bottom surface magnetic steel;
preferably, the surface of the inner magnetic steel facing the mounting bracket is flush with the surface of the bottom magnetic steel facing the mounting bracket.
Further, protruding isolation ribs are arranged on the inner side of the bottom wall of the mounting support, the isolation ribs are arranged around the periphery of the inner magnetic steel, and the coil and the bottom magnetic steel are arranged on the outer side of an area surrounded by the isolation ribs.
Further, the hollow area of bottom surface magnet steel has certain extension length, and the bottom surface magnet steel comprises a plurality of bottom magnet steel pieces, and a plurality of bottom magnet steel pieces include:
the first bottom magnetic steel sheets comprise four sheets, two sheets are respectively arranged at the outer sides of two ends of the hollow area, and the two first bottom magnetic steel sheets positioned at the same end of the hollow area are axially symmetrically distributed relative to the length extension direction of the hollow area;
the second bottom magnetic steel sheets at least comprise four sheets, are symmetrically arranged on two sides of the length extending direction of the hollow area, are positioned on the same side, are distributed along the length extending direction of the hollow area and are arranged between the two first bottom magnetic steel sheets on the same side.
Further, the coil comprises outer magnetic steel arranged at the periphery of the coil, wherein the outer magnetic steel comprises a plurality of magnetic steel blocks with the same shape and size, and the plurality of magnetic steel blocks are distributed around the periphery of the coil; the side wall of the mounting bracket is provided with a plurality of mounting grooves, and the magnetic steel blocks are arranged in the mounting grooves in a one-to-one correspondence manner.
Further, the coil and the inner magnetic steel are packaged between the protective layer and the mounting bracket;
preferably, the protective layer is injection molded from epoxy onto the mounting bracket.
It is another object of the present invention to provide a laundry treating apparatus comprising an inner drum, at least part of which is made of a metallic material that can generate eddy currents in an alternating magnetic field, and an electromagnetic heating module as described above.
Further, the electromagnetic heating device further comprises an outer cylinder, the inner cylinder is arranged in the outer cylinder, the electromagnetic heating module is arranged below the outer cylinder and connected with the wall of the outer cylinder, and one side of the inner magnetic steel, which is at least flush with the coil, is arranged towards the wall of the outer cylinder.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
According to the invention, the inner magnetic steel is arranged in the hollowed-out area formed by the coil, and the thickness of the inner magnetic steel is larger than that of the coil, so that the intensity of the magnetic field radiated outwards at the hollowed-out area can be effectively enhanced, and the alternating magnetic field radiated outwards by the electromagnetic heating module can cover the annular area covered by the coil with the annular structure and also can cover the hollowed-out area in the middle of the coil. The alternating magnetic field intensity that electromagnetic heating module produced is strengthened, can improve electromagnetic heating module's heating efficiency, and magnetic field intensity distributes more evenly simultaneously, is favorable to providing even heating effect.
According to the invention, the bottom surface magnetic steel with the hollow area is arranged between the coil and the mounting bracket, and can play a role of shielding magnetic induction lines, so that alternating magnetic fields generated by the coil are concentrated to radiate towards the direction opposite to the mounting bracket, leakage of the magnetic fields is reduced, and heating efficiency can be further improved. The hollow area of the bottom surface magnetic steel can avoid the part of the inner magnetic steel protruding out of the surface of the coil, and meanwhile, the part of the inner magnetic steel protruding out of the coil is surrounded by the bottom surface magnetic steel, so that the bottom surface magnetic steel weakens the magnetic field of the inner magnetic steel radiated to the side where the mounting bracket is located, and the alternating magnetic field radiated back to the mounting bracket is more concentrated.
In the invention, the inner magnetic steel and the bottom magnetic steel are respectively composed of a plurality of magnetic steel sheets, so that the size of a single magnetic steel sheet can be reduced, and the production is easier. Through the distribution design of a plurality of magnetic steel sheets in the electromagnetic heating module, the variety and the number of the magnetic steel sheets in different shapes can be reduced as much as possible, so that the number of different dies required for producing the magnetic steel sheets is reduced, and the production cost is saved.
According to the invention, the coil is packaged by matching the protective layer with the mounting bracket, so that the sealing effect on the inner space of the electromagnetic heating module can be realized, the external air is isolated, the electromagnetic heating module can be prevented from firing accidents caused by short circuit ignition of the coil, the potential safety hazard is avoided, and the working safety of the electromagnetic heating module is improved.
The following describes the 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 invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is an exploded view of an electromagnetic heating module in an embodiment of the invention;
FIG. 2 is a schematic diagram of an electromagnetic heating module according to an embodiment of the present invention;
FIG. 3 is a schematic view of a mounting bracket according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the present invention at A in FIG. 3;
fig. 5 is an exploded view of a clothing processing apparatus according to a second embodiment of the present invention.
In the figure: 100. an outer cylinder; 110. a cylinder wall; 200. an electromagnetic heating module; 201. a coil; 201A, a hollowed-out area; 210. an inner magnetic steel; 211. a first inner magnetic steel sheet; 212. a second inner magnetic steel sheet; 220. a bottom magnetic steel; 221. a first bottom magnetic steel sheet; 222. a second bottom magnetic steel sheet; 230. an outer magnetic steel; 231. a magnetic steel block; 240. a mounting bracket; 241. a bottom wall; 242. a sidewall; 243. a mounting groove; 244. a reinforcing groove; 245. a mounting part; 246. a mounting hole; 247. wiring grooves; 251. isolation ribs; 252. a first separator rib; 253. second separating ribs; 260. a protective layer; 261. a reinforcing part; 271. a first step; 272. a second step; 273. and a third step.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1 to 4, the present embodiment provides an electromagnetic heating module 200 that can be used in a laundry treatment apparatus such as a washing machine.
Specifically, the electromagnetic heating module 200 of the present embodiment includes a mounting bracket 240, and a coil 201 disposed on the mounting bracket 240. When the electromagnetic heating module 200 works, high-frequency alternating current is supplied to the coil 201, and the coil 201 can generate a high-frequency alternating magnetic field radiating outwards. The electromagnetic heating module 200 is installed in the clothes treating apparatus, and the generated high-frequency alternating magnetic field can excite the eddy current effect in the clothes treating drum or other water containers made of metal materials, so that the clothes treating drum or other water containers can generate heat by themselves, and the water can be heated under the non-contact condition. The mounting bracket 240 is made of an insulating material, such as plastic, that is not excited by the magnetic field, and does not affect the magnetic field generated by the coil 201.
In this embodiment, the coil 201 has an annular structure, the inner periphery of the coil 201 forms a hollowed-out area 201A, and an inner magnetic steel 210 for reinforcing the intensity of the alternating magnetic field is disposed in the hollowed-out area 201A. One side of the inner magnetic steel 210 facing the mounting bracket 240 protrudes from the surface of the coil 201 facing the mounting bracket 240, and the other side of the inner magnetic steel 210 is flush with the other side surface of the coil 201 or protrudes from the other side surface of the coil 201 as well.
The alternating magnetic field generated by the coil 201 is mainly concentrated in the annular region covered by the coil 201, and is radiated to the upper and lower sides of the coil 201. And for the hollowed-out area 201A in the middle of the coil 201, the magnetic field strength is obviously weakened. In the above scheme, the inner magnetic steel 210 is disposed inside the hollow area 201A, and the inner magnetic steel 210 can be excited by the alternating magnetic field generated by the coil 201, so that the alternating magnetic field radiating outwards can also be generated in the hollow area 201A, and the alternating magnetic field at the hollow area 201A is enhanced.
In operation of the electromagnetic heating module 200 of this embodiment, the heated component is disposed on the side of the coil 201 facing away from the mounting bracket 240. The upper side of the inner magnetic steel 210 is at least flush with the upper surface of the coil 201, and the lower side protrudes from the lower surface of the coil 201, so that the alternating magnetic field generated in the hollowed-out area 201A can radiate to the upper and lower sides, but not only in the plane of the coil 201. This increases the coverage area of the alternating magnetic field radiated from the electromagnetic heating module 200 on the heated member, and improves the heating efficiency of the electromagnetic heating module 200. At the same time, the distribution of the magnetic field intensity in the coverage area is made more uniform, which is beneficial to providing more uniform heating effect through the electromagnetic heating module 200.
In a further aspect of this embodiment, the inner magnetic steel 210 has a sheet structure with a certain thickness, and the coil 201 is spirally wound around the outer periphery of the inner magnetic steel 210. The coil 201 also has a certain thickness, and the thickness of the inner magnetic steel 210 is greater than that of the coil 201, so that the lower surface of the inner magnetic steel 210 protrudes out of the lower surface of the coil 201, and the upper surface of the inner magnetic steel 210 is at least flush with the upper surface of the coil 201.
In another scheme of this embodiment, the inner magnetic steel may be further configured into another shape, or be configured into a hollow structure, so long as it can satisfy that the lower surface of the inner magnetic steel protrudes from the lower surface of the coil, and the upper surface is at least flush with the upper surface of the coil.
In this embodiment, the inner magnetic steel 210 is set to fill the hollow area 201A in the middle of the coil 201, and the upper surface of the inner magnetic steel 210 is preferably flush with the upper surface of the coil 201. It should be noted that "flush" specifically means that the outer circumference of the inner magnetic steel 210 and the inner circumference of the coil 201 are located at the same level at the same position in the circumferential direction of the coil 201.
In this arrangement, as long as the distances between the surface of the heated member and the upper surface formed integrally with the inner magnet steel 210 and the coil 201 are equal everywhere, the magnetic field strength acting on the surface of the heated member can be substantially uniform everywhere, thereby securing a uniform heating effect to the greatest extent.
In this embodiment, a bottom magnetic steel 220 is further disposed between the coil 201 of the electromagnetic heating module 200 and the mounting bracket 240. The bottom magnetic steel 220 can shield the alternating magnetic field radiated to the downside, reduce leakage of the alternating magnetic field, enable the generated alternating magnetic field to radiate to the upside more intensively, and further improve heating efficiency.
Specifically, the mounting bracket 240 has a bottom wall 241, and a side wall 242 disposed around the outer periphery of the bottom wall 241. The bottom magnetic steel 220 has a sheet structure and is laid on the bottom wall 241 of the mounting bracket 240. The middle part of the bottom surface magnetic steel 220 is provided with a hollow area corresponding to the hollow area 201A of the inner periphery of the coil 201, and the part of the inner magnetic steel 210 protruding out of the lower surface of the coil 201 is arranged in the hollow area of the bottom surface magnetic steel 220.
In the above scheme, the hollow area of the bottom magnetic steel 220 can avoid the inner magnetic steel 210 on one hand, so as to ensure that the coil 201 and the inner magnetic steel 210 can reach the effect of flush upper surface after being assembled on the mounting bracket 240. On the other hand, the portion of the lower portion of the inner magnetic steel 210 protruding from the lower surface of the coil 201 is surrounded by the bottom magnetic steel 220, and the magnetic induction line penetrating from the lower surface of the inner magnetic steel 210 is guided by the bottom magnetic steel 220 to the outer circumferential direction, so that the magnetic field intensity of the inner magnetic steel 210 radiating downwards is weakened, the magnetic field leakage is further reduced, and the alternating magnetic field radiating to the upper side of the electromagnetic heating module 200 is further concentrated.
In a preferred scheme of this embodiment, the lower surfaces of the inner magnetic steel 210 and the bottom magnetic steel 220 are flush, and the lower surfaces of the inner magnetic steel 210 and the bottom magnetic steel 220 are respectively attached to the inner side surface of the bottom wall 241 of the mounting bracket 240. The inner side surface of the bottom wall 241 of the mounting bracket 240 may be a flat surface, and there is no need to provide a height fluctuation to support the bottom surface magnetic steel 220 and the inner magnetic steel 210 respectively.
In this embodiment, the protruding spacer ribs 251 are disposed on the inner side of the bottom wall 241 of the mounting bracket 240, the spacer ribs 251 are disposed around the outer periphery of the inner magnetic steel 210, and the coil 201 and the bottom magnetic steel 220 are disposed on the outer side of the region surrounded by the spacer ribs 251.
In the above scheme, the coil 201 is formed by winding the copper wire with the surface coated by the insulating layer, the coil 201 and the inner magnetic steel 210 are separated in two mutually independent areas by the arrangement of the isolating rib 251, and even if the insulating layer on the surface of the copper wire is damaged, the contact between the copper wire forming the coil 201 and the inner magnetic steel 210 can be avoided by the isolating rib 251, so that the work of the electromagnetic heating module 200 is affected. Meanwhile, the inner magnetic steel 210 and the bottom magnetic steel 220 are respectively arranged on the inner side and the outer side of the isolation rib 251, so that positioning in the assembly process is facilitated.
In a further aspect of this embodiment, the inner magnetic steel 210 and the bottom magnetic steel 220 are each formed by combining a plurality of magnetic steel sheets having the same shape or different sizes. A plurality of magnetic steel sheets are respectively paved on the bottom wall 241 of the mounting bracket 240 to replace internal magnetic steel or bottom magnetic steel of the whole sheet structure, and the size of a single magnetic steel sheet is reduced, so that the production difficulty is reduced.
In this embodiment, the inner magnetic steel 210 has a certain extension length in a direction perpendicular to the thickness direction (specifically, the left-right direction shown in fig. 1 to 3), and the inner magnetic steel 210 has an overall shape of a long strip-like sheet with arc edges at two ends. The inner magnetic steel 210 specifically includes two magnetic steel sheets with different shapes and sizes, namely a first inner magnetic steel sheet 211 and a second inner magnetic steel sheet 212.
The first inner magnetic steel sheet 211 includes two sheets, which are respectively disposed at two ends of the inner magnetic steel 210 in the length extension direction, and the outer contour of the first inner magnetic steel sheet 211 is close to an arc shape. The second inner magnetic steel sheet 212 is a rectangular magnetic steel sheet, is disposed between the two first inner magnetic steel sheets 211, and at least two second inner magnetic steel sheets 212 are disposed along the length extension direction of the inner magnetic steel 210 according to the overall size of the electromagnetic heating module 200 and the size of the second inner magnetic steel sheet 212. In the electromagnetic heating module 200 of the present embodiment, two second inner magnetic steel sheets 212 are provided.
The middle part of the bottom magnetic steel 220 is provided with a hollow area matched with the overall outline shape of the inner magnetic steel 210, and the hollow area further has a certain extension length along the length extension direction of the inner magnetic steel 210. The bottom magnetic steel 220 is composed of a plurality of bottom magnetic steel sheets distributed around the hollow area, and specifically includes two bottom magnetic steel sheets with different shapes and sizes, namely a first bottom magnetic steel sheet 221 and a second bottom magnetic steel sheet 222.
The first bottom magnetic steel sheet 221 comprises four sheets, and two sheets are respectively arranged at the outer sides of two ends of the hollow area. The outline of the first bottom magnetic steel sheet 221 is close to a quarter ring, and the two first bottom magnetic steel sheets 221 at the same end of the hollow area are axisymmetrically distributed relative to the length extending direction of the hollow area, so that the two first bottom magnetic steel sheets 221 form a half ring shape.
The second bottom magnetic steel sheets 222 are rectangular magnetic steel sheets, and can be divided into two groups symmetrically arranged at two sides of the length extending direction of the hollow area, and the second bottom magnetic steel sheets 222 belonging to the same group are arranged between the two first bottom magnetic steel sheets 221 at two ends of the same side. Each set of second bottom magnetic steel sheets 222 is provided with at least two sheets distributed along the length extending direction of the hollow region according to the overall size of the electromagnetic heating module 200 and the size of the second bottom magnetic steel sheets 222. In the electromagnetic heating module 200 of the present embodiment, two second bottom magnetic steel sheets 222 are respectively disposed on two sides of the hollow area, that is, four second bottom magnetic steel sheets 222 are disposed in total.
In this embodiment, the above-mentioned distribution manner of the magnetic steel sheets is adopted, so that only four magnetic steel sheets with different shapes and sizes are needed to form the inner magnetic steel 210 and the bottom magnetic steel 220, and then only four types of dies are needed during production, which is beneficial to saving production cost.
Further, in this embodiment, a space is provided between the first inner magnetic steel sheet 211 and the second inner magnetic steel sheet 212, and a space is also provided between the first bottom magnetic steel sheet 221 and the second bottom magnetic steel sheet 222, and the two spaces are flush.
In this embodiment, the bottom wall 241 of the mounting bracket 240 is further provided with a raised spacer rib. Specifically, the separating ribs include a first separating rib 252 and a second separating rib 253, both of which extend in directions perpendicular to the length extending direction of the inner magnetic steel 210.
The first separating rib 252 is disposed inside a region surrounded by the separating rib 251, separates the inside of the separating rib 251 into four mutually independent regions, and the first inner magnetic steel sheet 211 and the second inner magnetic steel sheet 212 are respectively and independently assembled inside one of the regions. The second separating rib 253 is disposed between the separating rib 251 and the side wall 242 of the mounting bracket 240 to separate an annular region therebetween into eight mutually independent regions, and each of the first and second bottom magnetic steel sheets 221, 222 is independently assembled inside one of the regions.
In the above scheme, through the arrangement of the first partition rib 252 and the second partition rib 253, a plurality of independent installation spaces are partitioned on the bottom wall 241 of the installation bracket 240, and each magnetic steel sheet can be respectively positioned when being installed, so that the accurate assembly of a plurality of magnetic steel sheets forming the inner magnetic steel 210 and the bottom surface magnetic steel 220 is easier to realize.
In a further aspect of this embodiment, the electromagnetic heating module 200 further includes an outer magnetic steel 230 disposed on the outer periphery of the coil 201. The outer magnet steel 230 surrounds the outer periphery of the coil 201, so that the alternating magnetic field radiated to the outer periphery of the coil 201 can be shielded, leakage of the magnetic field to the outer periphery of the coil 201 can be reduced, and the alternating magnetic field can be more intensively radiated to the upper side of the electromagnetic heating module 200.
Specifically, the outer magnetic steel 230 includes a plurality of magnetic steel blocks 231 having a shape and a size consistent with each other, the magnetic steel blocks 231 are specifically rectangular parallelepiped, and the plurality of magnetic steel blocks 231 are distributed around the outer circumference of the coil 201. A plurality of mounting grooves 243 are formed in the side wall 242 of the mounting bracket 240, and the magnetic steel blocks 231 are arranged in the mounting grooves 243 in a one-to-one correspondence manner.
In the above scheme, the outer magnetic steel 230 is composed of a plurality of small-sized magnetic steel blocks 231, and the shape and size of each magnetic steel block 231 are unified, so that the same mold can be used for production, and the trouble of designing multiple molds according to the peripheral shape of the coil 201 is avoided.
In the present embodiment, the side wall 242 of the mounting bracket 240 has a certain thickness, the mounting groove 243 is provided between the inner circumference and the outer circumference of the side wall 242, and the opening of the mounting groove 243 is provided on the upper surface of the side wall 242. At both left and right ends of the mounting bracket 240, the inner peripheral surfaces of the side walls 242 are smooth circular arc surfaces, and fit to the outer periphery of the coil 201 inside. While the outer circumferential surface of the sidewall 242 is formed by connecting a plurality of planes sequentially deflected by a certain angle so as to be adapted to the shape of the plurality of magnetic steel blocks 231.
Further, a connection terminal (not shown) to which the coil 201 is connected passes out of the electromagnetic heating module 200 from the side wall 242 of the mounting bracket 240. Specifically, the side wall 242 is provided with a notch, and a wiring groove 247 is formed at the notch to communicate the inner side and the outer side of the side wall 242. Accordingly, the magnetic steel block 231 constituting the outer magnetic steel 230 is not mounted at a position corresponding to the wiring groove 247 on the outer periphery of the coil 201.
In a further aspect of this embodiment, the electromagnetic heating module 200 further includes a protective layer 260, where the protective layer 260 is disposed above the coil 201 and is connected to the mounting bracket 240, and encapsulates the coil 201 and the inner magnetic steel 210, the bottom magnetic steel 220, and the outer magnetic steel 230 between the protective layer 260 and the mounting bracket 240.
In the embodiment of the present embodiment, the protective layer 260 is made of high temperature resistant epoxy. During installation, the coil 201, the inner magnetic steel 210, the bottom magnetic steel 220 and the outer magnetic steel 230 are assembled at corresponding positions on the mounting bracket 240, then epoxy resin is injected into the upper layer for encapsulation, and the epoxy resin is solidified to form the protective layer 260 covering the upper part of the mounting bracket 240.
In the above scheme, the coil 201 and various magnetic steels inside the mounting bracket 240 are encapsulated by the arrangement of the protective layer 260, so that the space between the protective layer 260 and the mounting bracket 240 is sealed, and the internal space of the electromagnetic heating module 200 is isolated from the external air. In this way, even if the coil 201 is ignited due to a short-circuit fault, the air in the electromagnetic heating module 200 is extremely thin, so that the combustion is not substantially generated, and the ignition accident of the electromagnetic heating module 200 can be avoided. The arrangement of the protective layer 260 eliminates potential safety hazards, improves the working safety of the electromagnetic heating module 200, and enables the electromagnetic heating module 200 to meet safety standards.
Further, in the present embodiment, a reinforcing groove 244 recessed in the inner surface of the mounting groove 243 is provided on the inner wall of the mounting groove 243 on the mounting bracket 240, and the reinforcing groove 244 is provided specifically on the side close to the outer peripheral surface of the side wall 242 of the mounting bracket 240. The epoxy resin used to form the protective layer 260 may infiltrate and fill each of the reinforcing grooves 244 before curing, so that the cured protective layer 260 has a plurality of reinforcing parts 261 spaced around its outer circumference.
In the above scheme, the reinforcing groove 244 is formed on the mounting bracket 240, and the epoxy resin permeates into the reinforcing groove 244 to form the reinforcing part 261, so that the contact area between the protective layer 260 and the mounting bracket 240 is increased, the protective layer 260 and the mounting bracket 240 are more firmly connected into a whole, and the situation that the protective layer 260 falls off is avoided.
Further, the side wall 242 of the mounting bracket 240 has a stepped structure in the thickness direction thereof. Specifically, the side near the outer peripheral surface of the sidewall 242 is a first step 271 with the highest height, and the protective layer 260 is entirely located inside the area surrounded by the first step 271. The first step 271 has a second step 272 of a reduced height inside thereof, and the upper side opening of the reinforcing groove 244 is located on the upper surface of the second step 272. The second step 272 has a third step 273 having a further reduced height on the inner side, the upper opening of the mounting groove 243 is located on the upper surface of the third step 273, and when the magnetic steel block 231 is assembled in the mounting groove 243, the upper surface of the magnetic steel block 231 is flush with the upper surface of the third step 273.
The electromagnetic heating module 200 of this embodiment sets up the inner magnet steel 210 that thickness is greater than coil 201 thickness in the middle part hollow area 201A of coil 201, can strengthen the alternating magnetic field intensity of hollow area 201A department, strengthens the heating efficiency of electromagnetic heating module 200. Meanwhile, the inner magnetic steel 210 can also improve the uniformity of the intensity distribution of the alternating magnetic field, which is beneficial to the electromagnetic heating module 200 to provide uniform heating effect.
The bottom surface magnetic steel 220 and the outer magnetic steel 230 are respectively arranged below and at the periphery of the coil 201, so that the magnetic steel radiating to the lower side and the periphery side of the coil 201 can be shielded, magnetic field leakage is reduced, the alternating magnetic field is enabled to radiate more intensively to the upper side, and further the alternating magnetic field is enabled to act on the heated component more intensively. Through optimizing the distribution of the inner magnetic steel 210, the bottom magnetic steel 220 and the outer magnetic steel 230, the trouble of producing the whole large-volume magnetic steel can be avoided, and meanwhile, the number of the needed moulds with different specifications is reduced, thereby being beneficial to saving the production cost.
The uppermost layer of the electromagnetic heating module 200 is encapsulated by injecting high-temperature-resistant epoxy resin, so that the internal coil 201 and external ambient air are isolated, the occurrence of fire accident of the electromagnetic heating module 200 can be avoided, and the working safety is improved.
Example two
As shown in fig. 1 to 5, the present embodiment provides a laundry treating apparatus including the electromagnetic heating module 200 according to the first embodiment. The laundry treatment apparatus according to the present embodiment includes, but is not limited to, a washing machine, a washing and drying integrated machine, and the like.
In particular, the laundry treating device comprises an inner drum (not shown in the figures), at least part of which is made of a metallic material that generates eddy currents in an alternating magnetic field. After the electromagnetic heating module 200 is electrified, an alternating magnetic field radiating to the inner cylinder is generated, so that the inner cylinder heats, and the aim of heating washing water in the inner cylinder is fulfilled.
In detail, the electromagnetic heating module 200 is disposed below the inner cylinder, the wall of the inner cylinder is at least partially made of metal material, and a part of the wall of the inner cylinder is heated by the eddy effect generated by the excitation of the electromagnetic heating module 200, so as to heat the washing water in the inner cylinder. Preferably, the wall of the inner cylinder is entirely made of metal material, and when the inner cylinder rotates to a position close to the electromagnetic heating module 200, each part of the wall can be excited by the electromagnetic heating module 200 to generate heat, so that higher heating efficiency can be realized.
In another aspect of this embodiment, the wall of the inner cylinder may be made of an insulating material, and a lifting rib or other additional module made of a metal material is disposed on the wall of the inner cylinder, and the lifting rib or other additional module heats under the excitation of the electromagnetic heating module 200, so as to heat the washing water in the inner cylinder.
Further, the laundry treating apparatus of the present embodiment further includes an outer tub 100, the inner tub being disposed within the outer tub 100. Preferably, the inner tub of the washing machine of the present embodiment can independently contain washing water during washing. Specifically, the wall of the inner cylinder is not provided with a dehydration hole, and the inner cylinder is in a closed state in the washing process, so that washing water can be independently contained. The cylinder wall of the inner cylinder is provided with a drain hole, the drain hole is blocked by the sealing component in the washing process, and when the inner cylinder reaches a certain rotating speed, the sealing component can open the drain hole under the action of centrifugal force, so that the washing water is discharged. The outer tub 100 communicates with a drain structure, and water discharged from the inner tub enters the outer tub 100 and is discharged out of the washing machine through the drain structure.
In this embodiment, the wall of the inner cylinder is made of a metal material, and the outer cylinder 100 is made of a plastic material that does not excite an eddy current effect in a magnetic field. The electromagnetic heating module 200 is installed outside the outer cylinder 100, and a high-frequency alternating magnetic field can be generated by supplying high-frequency alternating current to the coil 201 inside the electromagnetic heating module. The electromagnetic induction line of the high-frequency alternating magnetic field can penetrate through the outer cylinder 100 and acts on the inner cylinder wall of the metal material, so that vortex is generated on the inner cylinder wall under the electromagnetic induction action, and the vortex finishes the conversion from electric energy to heat energy when overcoming the internal resistance of the inner cylinder wall and flows, thereby realizing the heating of the inner cylinder wall and heating the washing water in the inner cylinder wall.
In a further aspect of this embodiment, the electromagnetic heating module 200 is disposed below the outer cylinder 100 and is connected to the cylinder wall 110 of the outer cylinder 100.
Specifically, the bottom wall 241 of the mounting bracket 240 has a mounting portion 245 extending in the peripheral direction of the side wall 242 of the mounting bracket 240, and the mounting portion 245 is provided with a mounting hole 246. The mounting portions 245 are provided at both left and right ends of the sidewall 242 and extend further toward both ends, respectively, and a mounting hole 246 is provided at a front portion and a rear portion of each of the mounting portions 245, respectively. The electromagnetic heating module 200 is connected with the cylinder wall 110 of the outer cylinder 100 through the mounting hole 246 on the mounting part 245, so that the electromagnetic heating module 200 is mounted on the outer cylinder 100.
In the above scheme, the electromagnetic heating module 200 is disposed below the outer tub 100, and is not in direct contact with the washing water during the operation of the washing machine, thereby reducing the potential safety hazard caused by the contact of the coil 201 with the water. On the other hand, the electromagnetic heating module 200 may intensively heat the bottom region of the inner tub, i.e., the portion where the washing water is concentrated, with higher heating efficiency.
In this embodiment, the side of the electromagnetic heating module 200 with the inner magnetic steel 210 flush with the coil 201 is disposed towards the cylinder wall 110 of the outer cylinder 100, and the upper surface of the coil 201 and the inner magnetic steel 210 is an arc surface coaxial with the cylinder wall of the inner cylinder. In this way, the distances between the parts on the whole upper surface and the wall of the inner cylinder are equal, so that the wall of the inner cylinder is uniformly heated.
In a preferred embodiment of the present embodiment, the electromagnetic heating module 200 has a longer extension in the circumferential direction of the outer tub 100 than in the radial direction of the outer tub 100. The electromagnetic heating module 200 increases the heating area by extending in the circumferential direction of the outer tub 100, thereby not requiring a large area to be occupied in the radial direction of the outer tub 100.
In this embodiment, the electromagnetic heating module 200 is installed at the lowest position of the cylinder wall 110 of the outer cylinder 100 to achieve the optimal heating effect, and some other structures, such as a water outlet on the outer cylinder 100, also need to be provided at the lowest position of the cylinder wall 110. By reducing the extension length of the electromagnetic heating module 200 along the radial direction of the outer cylinder 100, the electromagnetic heating module can avoid occupying excessive space at the lowest position of the cylinder wall 110 of the outer cylinder 100, and influencing the arrangement of structures such as a water outlet. And the electromagnetic heating module 200 extends in the circumferential direction of the outer tub 100 to provide a larger heating area, so that higher heating efficiency can be achieved.
The laundry treating apparatus of the present embodiment achieves a non-contact heating effect with the washing water by providing the electromagnetic heating module 200 to heat the washing water. The electromagnetic heating module 200 is arranged below the outer cylinder 100, is not contacted with the washing water all the time during the working period of the washing machine, reduces potential safety hazards caused by the contact of the coil 201 with the washing water, and can heat the contact part of the bottom of the inner cylinder and the washing water, so that the heating efficiency is higher. The coil 201 and the inner magnetic steel 210 in the electromagnetic heating module 200 form an upward arc surface and are parallel to the wall surface of the inner cylinder, so that a uniform heating effect can be achieved. The electromagnetic heating module 200 extends in the circumferential direction of the outer tub 100 to provide a larger heating area, does not have an excessively long extension in the radial direction of the outer tub 100, and avoids taking up excessive space at the lowest portion of the tub wall 110 of the outer tub 100.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (10)
1. An electromagnetic heating module comprises a mounting bracket and a coil arranged on the mounting bracket; the coil has annular structure for produce the alternating magnetic field of outside radiation, become hollow area around the interior of coil, its characterized in that, set up the interior magnet steel that is used for strengthening alternating magnetic field intensity in the hollow area, interior magnet steel towards one side protrusion in the coil towards the surface of installing support, interior magnet steel's opposite side is at least with the opposite side surface parallel and level of coil.
2. The electromagnetic heating module according to claim 1, wherein the inner magnetic steel has a sheet-like structure with a certain thickness, and the coil is spirally wound around the outer periphery of the inner magnetic steel; the coil has a certain thickness in the thickness direction of the inner magnetic steel, and the thickness of the inner magnetic steel is larger than that of the coil.
3. The electromagnetic heating module of claim 2, wherein the inner magnetic steel has a certain extension length in a direction perpendicular to a thickness direction thereof, and comprises:
the first inner magnetic steel sheet comprises two sheets which are respectively arranged at two ends of the inner magnetic steel in the length extending direction;
the second inner magnetic steel sheet at least comprises two sheets, is distributed along the length extension direction of the inner magnetic steel and is arranged between the two first inner magnetic steel sheets.
4. The electromagnetic heating module of claim 2, wherein a bottom surface magnetic steel is disposed between the coil and the mounting bracket; the bottom surface magnet steel is laid on the diapire of installing support, and has the cavity region that corresponds with the fretwork region of coil inner periphery, interior magnet steel protrusion is in the hollow region of bottom surface magnet steel setting on coil surface.
5. The electromagnetic heating module of claim 4, wherein the inner side of the bottom wall of the mounting bracket is provided with raised isolation ribs, the isolation ribs are arranged around the periphery of the inner magnetic steel, and the coil and the bottom magnetic steel are arranged outside an area surrounded by the isolation ribs.
6. The electromagnetic heating module of claim 4, wherein the hollow region of the bottom surface magnetic steel has an extension length, the bottom surface magnetic steel is composed of a plurality of bottom magnetic steel sheets, the plurality of bottom magnetic steel sheets comprising:
the first bottom magnetic steel sheets comprise four sheets, two sheets are respectively arranged at the outer sides of two ends of the hollow area, and the two first bottom magnetic steel sheets positioned at the same end of the hollow area are axially symmetrically distributed relative to the length extension direction of the hollow area;
the second bottom magnetic steel sheets at least comprise four sheets, are symmetrically arranged on two sides of the length extending direction of the hollow area, are positioned on the same side, are distributed along the length extending direction of the hollow area and are arranged between the two first bottom magnetic steel sheets on the same side.
7. The electromagnetic heating module of claim 1, further comprising an outer magnetic steel disposed at the outer periphery of the coil, the outer magnetic steel comprising a plurality of magnetic steel blocks of uniform shape and size, the plurality of magnetic steel blocks being distributed around the outer periphery of the coil; the side wall of the mounting bracket is provided with a plurality of mounting grooves, and the magnetic steel blocks are arranged in the mounting grooves in a one-to-one correspondence manner.
8. The electromagnetic heating module of any of claims 1-7, further comprising a shield coupled to the mounting bracket, the coil and inner magnet steel being encapsulated between the shield and the mounting bracket.
9. A laundry treatment apparatus comprising an inner drum, at least part of which is made of a metallic material which generates eddy currents in an alternating magnetic field, characterized in that it further comprises an electromagnetic heating module according to any one of claims 1 to 8.
10. The clothes treating apparatus of claim 9 further comprising an outer tub, the inner tub being disposed within the outer tub, the electromagnetic heating module being disposed below the outer tub and connected to a wall of the outer tub, wherein at least a flush side of the inner magnetic steel with the coil is disposed toward the wall of the outer tub.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230811.5A CN116770565A (en) | 2022-03-10 | 2022-03-10 | Electromagnetic heating module and clothes treatment device |
| PCT/CN2023/075822 WO2023169155A1 (en) | 2022-03-10 | 2023-02-14 | Electromagnetic heating module and laundry treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230811.5A CN116770565A (en) | 2022-03-10 | 2022-03-10 | Electromagnetic heating module and clothes treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116770565A true CN116770565A (en) | 2023-09-19 |
Family
ID=87937184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210230811.5A Pending CN116770565A (en) | 2022-03-10 | 2022-03-10 | Electromagnetic heating module and clothes treatment device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116770565A (en) |
| WO (1) | WO2023169155A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4155453A1 (en) * | 2016-08-25 | 2023-03-29 | LG Electronics Inc. | Laundry treatment apparatus provided with an induction heater |
| CN206932430U (en) * | 2017-06-29 | 2018-01-26 | 肇庆鼎茂机电有限公司 | Micro electromagnetic coil panel |
| KR102669130B1 (en) * | 2018-08-09 | 2024-05-23 | 엘지전자 주식회사 | Laundry Treatment Apparatus) |
| CN111118830A (en) * | 2019-12-26 | 2020-05-08 | 青岛海尔洗衣机有限公司 | Washing machine and control method thereof |
| CN212936240U (en) * | 2020-09-10 | 2021-04-09 | 佛山市顺德区美的电热电器制造有限公司 | Coil disc assembly and electromagnetic heating device |
-
2022
- 2022-03-10 CN CN202210230811.5A patent/CN116770565A/en active Pending
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2023
- 2023-02-14 WO PCT/CN2023/075822 patent/WO2023169155A1/en unknown
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| WO2023169155A1 (en) | 2023-09-14 |
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