CN108630415A - Transformer and microwave cooking electric appliance - Google Patents
Transformer and microwave cooking electric appliance Download PDFInfo
- Publication number
- CN108630415A CN108630415A CN201810388066.0A CN201810388066A CN108630415A CN 108630415 A CN108630415 A CN 108630415A CN 201810388066 A CN201810388066 A CN 201810388066A CN 108630415 A CN108630415 A CN 108630415A
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- Prior art keywords
- spacer block
- spacer
- transformer
- thickness
- block
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- 238000010411 cooking Methods 0.000 title claims abstract description 16
- 125000006850 spacer group Chemical group 0.000 claims abstract description 243
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 41
- 238000005096 rolling process Methods 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 238000009730 filament winding Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005417 remagnetization Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F2038/003—High frequency transformer for microwave oven
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention discloses a kind of transformers and microwave cooking electric appliance.Transformer includes the bobbin and two magnetic cores of insulation.Two magnetic cores are to being inserted in bobbin.The first spacer is provided on the inside pipe wall of bobbin, the first spacer includes the second spacer block of the first spacer block of the first spacer block and connection, and the thickness of the second spacer block and the thickness of the first spacer block differ.One end of two magnetic cores is separated by the first spacer block or the second spacer block respectively.In above-mentioned transformer, thickness the first spacer block and the second spacer block of different sizes are internally provided with due to bobbin, and two magnetic cores can be resisted against the first spacer block or the second spacer block to adjust the gap size between two magnetic cores according to actual demand, the needs of to allow transformer to meet different size or model, whole to make the cost of transformer relatively low, production efficiency is higher.
Description
Technical field
The present invention relates to household electrical appliance technical fields, more specifically, are related to a kind of transformer and microwave cooking electric appliance.
Background technology
In the related art, transformer generally comprises various windings and magnetic core etc..Incorporated by reference to Figure 10, two to plug in magnetic core
(not shown) need to be spaced from each other by the spacer block 302 being arranged on 301 inner wall of Insulated winding wire pipe of skeleton 300 so that two magnetic
A fixed gap can be kept between core, still, the mold for making transformer may be only available for a kind of transformer of specification,
Can not be general, cause the cost of transformer higher in this way, production efficiency is relatively low.When there are different transformer difference production requirements
When, transformer coil the number of turns has corresponding difference, has corresponding difference so as to cause coil length-width ratio, thus needs reasonably to adjust
To meet coupling efficiency, the winding bobbin of such mass production needs to re-start mold design magnetic gap, changes magnetic gap to meet
Product requirement, thus the different design of skeleton closes standardization of products requirement.
Invention content
A kind of transformer of embodiment of the present invention offer and microwave cooking electric appliance.
The transformer of embodiment of the present invention includes：
The bobbin of insulation is provided with the first spacer on the inside pipe wall of the bobbin, and first spacer includes
First spacer block and the second spacer block for connecting first spacer block, the thickness of second spacer block are spaced with described first
The thickness of block differs；With
To two magnetic cores being inserted in the bobbin, one end of described two magnetic cores respectively by first spacer block or
Second spacer block described in person separates.
In the transformer of the above embodiment, thickness the first spacer block of different sizes is internally provided with due to bobbin
With the second spacer block, and two magnetic cores can be resisted against the first spacer block or the second spacer block to adjust according to actual demand
Gap size between whole two magnetic cores, it is whole so that becoming the needs of to allow transformer to meet different size or model
The cost of depressor is relatively low, and production efficiency is higher.
In some embodiments, first spacer includes interconnecting piece, interconnecting piece connection first interval
Block and second spacer block, relative to first spacer block, second spacer block closer to the center of the bobbin,
The thickness of second spacer block is more than the thickness of first spacer block, and first spacer block is arranged in the bobbin
Inside pipe wall, the thickness of the interconnecting piece are less than the thickness of first spacer block.
In some embodiments, the quantity of first spacer block is multiple, and the multiple first spacer block is described in
Bobbin is provided at circumferentially spaced, and the quantity of the interconnecting piece is multiple, between each interconnecting piece connection each described first
Spacer block and second spacer block.
In some embodiments, second spacer block is located at the multiple first spacer block and is formed by cyclic structure
Center.
In some embodiments, second spacer block is in the form of a column, and the multiple interconnecting piece interval is connected to described
The outer surface of two spacer blocks.
In some embodiments, winding slot is formed on the outside of the bobbin, the transformer includes cap, described
Cap covers the winding slot at least partly, and the cap includes the second interval corresponding with first spacer location
Part, second spacer include third spacer block and connect the 4th spacer block of the third spacer block, the third interval
The thickness of block is identical as the thickness of the first spacer block, the thickness of the thickness and second spacer block of the 4th spacer block
Identical, when one end of described two magnetic cores is separated by first spacer block respectively, the other end of described two magnetic cores is distinguished
It is separated by the third spacer block, it is described two when one end of described two magnetic cores is separated by second spacer block respectively
The other end of magnetic core is separated by the 4th spacer block respectively.
In some embodiments, the winding slot includes primary winding slot and secondary rolling thread slot, the transformer include
Around the armature winding for being located at the primary winding slot and around the secondary windings for being located at the secondary rolling thread slot.
In some embodiments, the winding slot includes filament coil slot, and the primary winding slot is located at the filament
Between winding slot and the secondary rolling thread slot, the transformer includes around the Filament Winding for being located at the filament coil slot.
Embodiment of the present invention also provides a kind of microwave cooking electric appliance, including the transformer of any of the above-described embodiment and micro-
Baud generator, the microwave generator connect the transformer.
In the microwave cooking electric appliance of the above embodiment, due to bobbin be internally provided with thickness it is of different sizes first
Spacer block and the second spacer block, and two magnetic cores can be resisted against the first spacer block or the second interval according to actual demand
Block is to adjust the gap size between two magnetic cores, whole the needs of to allow transformer to meet different size or model
So that the cost of transformer is relatively low, production efficiency is higher.
The additional aspect and advantage of embodiments of the present invention will be set forth in part in the description, partly will be from following
Description in become apparent, or the practice of embodiment through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of the first spacer of embodiment of the present invention.
Fig. 2 is another structural schematic diagram of the first spacer of embodiment of the present invention.
Fig. 3 is the another structural schematic diagram of the first spacer of embodiment of the present invention.
Fig. 4 is the schematic cross-section of the transformer of embodiment of the present invention.
Structural schematic diagram when Fig. 5 is the first spacer the second spacer block of removal of the transformer of embodiment of the present invention.
Fig. 6 is the part-structure schematic diagram of the transformer of embodiment of the present invention.
Fig. 7 is the structural schematic diagram of the second spacer of embodiment of the present invention.
Fig. 8 is another structural schematic diagram of the second spacer of embodiment of the present invention.
Fig. 9 is the structural schematic diagram of the microwave cooking electric appliance of embodiment of the present invention.
Figure 10 is the structural schematic diagram of the skeleton of transformer in the related technology.
Main element symbol description：
Microwave cooking electric appliance 200, transformer 100, bobbin 10, inside pipe wall 11, the first spacer 12, the first spacer block
122, the second spacer block 124, interconnecting piece 126, winding slot 14, primary winding slot 142, secondary rolling thread slot 144, armature winding 141,
Secondary windings 143, filament coil slot 146, Filament Winding 145, magnetic core 20, cap 30, the second spacer 32, third spacer block
322, the 4th spacer block 324, microwave generator 110, cavity 130, cavity 150, pallet 160.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with attached drawing.Same or similar label is from beginning in attached drawing
To the same or similar element of expression or element with the same or similar functions eventually.
In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, it is only used for explaining the present invention's
Embodiment, and be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
It please refers to Fig.1 to Fig.3, embodiment of the present invention provides a kind of transformer 100.Transformer 100 include insulation around
Spool 10 and two magnetic cores 20.Two magnetic cores 20 are to being inserted in bobbin 10.It is provided with first on the inside pipe wall 11 of bobbin 10
Spacer 12, the first spacer 12 include the first spacer block 122 and connect the second spacer block 124 of the first spacer block 122, and second
The thickness D2 of spacer block 124 and the thickness D1 of the first spacer block 122 are differed.One end of two magnetic cores 20 is respectively by the first interval
Block 122 or the second spacer block 124 separate.
In the transformer 100 of the above embodiment, due to bobbin 10 be internally provided with thickness it is of different sizes first
Spacer block 122 and the second spacer block 124, and two magnetic cores 20 can be resisted against the first spacer block 122 according to actual demand
Or second spacer block 124 with adjust two magnetic cores 20 between gap size, to allow transformer 100 to meet different rule
The demand of lattice or model, whole so that the cost of transformer 100 is relatively low, production efficiency is higher.
Specifically, in one example, the bobbin 10 of insulation can be resin material.Magnetic core 20 can be copper core or iron core
Deng.
Specifically, in the related art, two of transformer need to be kept according to actual demand between plug in magnetic core
Preset gap, so that transformer can meet default magnetic gap requirement.Two magnetic cores will produce whirlpool during remagnetization ground
Stream loss, and magnetic gap advantageously reduces eddy-current loss.In addition, the coupling efficiency of transformer is related to the size of magnetic gap, at the same also with
The coiling stack height of winding is related to around line width size.That is, in order to enable transformation to keep a suitable coupling
Conjunction rate, can be by adjusting the coiling stack height of magnetic gap or winding between two magnetic cores and around the size of line width.
In present embodiment, due to present embodiment two magnetic cores 20 can by the first spacer block 122 or the second spacer block 124 every
It opens, so that transformer 100 can meet the needs of different size or model, and transformer 100 can be enable to expire
The range of the different coupling efficiency demand of foot, coupling efficiency is stablized 0.5 to 1.2.
It should be noted that in the figure 2 example, the thickness D1 of the first spacer block 122 is less than the thickness of the second spacer block 124
Spend D2, when the gap between two magnetic cores 20 of transformer 100 need meet the second spacer block 124 thickness D2 when, can connect by
One end of two magnetic cores 20 abuts directly against the both sides (see Fig. 5) of the second spacer block 124, at this point, the first spacer block 122 still with
Second spacer block 124 connects.When the gap between two magnetic cores 20 of transformer 100 needs the thickness for meeting the first spacer block 122
When spending D1, the connection of the first spacer block 122 and the second spacer block 124 can be interrupted, for example, directly wiping out, so that the second interval
Block 124 is detached from transformer 100, and two such magnetic core 20 can abut directly against the opposite both sides of the first spacer block 122 (see figure
4)。
In another embodiment, the thickness of the first spacer block is more than the thickness of the second spacer block, when transformer
When gap between two magnetic cores needs to meet the thickness of the first spacer block, can two magnetic cores directly be abutted directly against first
Spacer block, the first spacer block are still connect with the second spacer block.When the gap between two magnetic cores of transformer needs satisfaction
When the thickness of two spacer blocks, the connection of the first spacer block and the second spacer block can be interrupted, so that the first spacer block is detached from transformation
Device, two such magnetic core can abut directly against the opposite both sides of the second spacer block.
In some embodiments, the first spacer block 122 and the second spacer block 124 can in the form of sheets, referring to Fig. 2,
Plane where one spacer block 122 can be in the same plane with the plane where the second spacer block 124, in another example
In, 3 are please referred to, the plane where the first spacer block 122 can also be located at Different Plane with the plane where the second spacer block 124
On, this is not restricted for the position of the first spacer block 122 and the second spacer block 124.
It please refers to Fig.1, Fig. 5 and Fig. 6, in some embodiments, the first spacer 12 includes interconnecting piece 126, interconnecting piece
126 connection the first spacer blocks 122 and the second spacer block 124, relative to the first spacer block 122, the second spacer block 124 closer to around
The center of spool 10, the thickness D2 of the second spacer block 124 are more than the thickness D1 of the first spacer block 122, the setting of the first spacer block 122
In the inside pipe wall 11 of bobbin 10, the thickness of interconnecting piece 126 is less than the thickness D1 of the first spacer block 122.
In this way, connecting the first spacer block 122 and the second spacer block 124, and the thickness of interconnecting piece 126 by interconnecting piece 126
Degree is less than the first spacer block 122, so that two magnetic cores 20 need to meet be 122 thickness D1 of the first spacer block gap
When, connection of second spacer block 124 with interconnecting piece 126 can be disconnected so that the second spacer block 124 is rapidly separated transformer 100.
Preferably, the range of the thickness D1 of the first spacer block 122 can be 1.3mm to 1.7mm.The thickness of second spacer block 124
The range for spending D2 can be 1.8mm to 2.2mm.
Specifically, in some embodiments, the first spacer block 122 can be in integrally continuous cyclic annular and around the second interval
Block 124 and be arranged.Second spacer block 124 can be a solid disk.Since the first spacer block 122 is arranged in the pipe of bobbin 10
Wall 11, and the second spacer block 124 needs to meet the second spacer block when two magnetic cores 20 in this way closer to the center of bobbin 10
When the gap of 124 thickness D2, can one end of two magnetic cores 20 be directly resisted against the opposite both sides of the second spacer block 124, this
When, the first spacer block 122 is not in direct contact with magnetic core 20, that is to say, that the first spacer block 122 does not play interval magnetic core
20 effect.And when two magnetic cores 20 need to meet the gap of the thickness D1 of the first spacer block 122, it directly can quickly interrupt
The interconnecting piece 126 of the first spacer block 122 and the second spacer block 124 is connected so that the second spacer block 124 is detached from transformer 100, this
One end of two magnetic cores 20 of sample, which can be resisted against, is arranged the both sides opposite in the first spacer block 122 of the inside pipe wall 11 of bobbin 10.
Referring to Fig. 1, in some embodiments, the quantity of the first spacer block 122 is multiple, multiple first spacer blocks
The quantity of 122 being provided at circumferentially spaced along bobbin 10, interconnecting piece 126 is multiple, and each interconnecting piece 126 connects between each first
Spacer block 122 and the second spacer block 124.
In this way, the second spacer block 124 may make to be fixed on multiple first spacer blocks 122 in this way, it is simple in structure.
Specifically, in one example, multiple first spacer blocks 122 are uniformly arranged along the circumferentially-spaced of bobbin 10, this
Sample can make 124 uniform force of the second spacer block.Multiple first spacer blocks 122 form an intermittent cyclic structure.For example,
In the example depicted in fig. 1, the quantity of the first spacer block 122 is 4, and 4 the first spacer blocks 122 are between the circumferential direction of bobbin 10
Every 90 degree of settings.
Referring to Fig. 1, in some embodiments, the second spacer block 124 is located at multiple first spacer blocks 122 and is formed by
The center of cyclic structure.In this way, be easy that the second spacer block 124 is made to be detached from the first spacer block 122 in this way, it is simple in structure, it is convenient easy
Row.
Specifically, the quantity of the first spacer block 122 can be multiple, the quantity of the second spacer block 124 can be single.It is multiple
First spacer block 122 forms intermittent cyclic structure, and single second spacer block 124 is arranged at the center of cyclic structure, when two
When a magnetic core 20 needs to meet the gap of the thickness D2 of the second spacer block 124, one end of two magnetic cores 20 can directly abut in place
In the both sides that second spacer block 124 at the center of cyclic structure is opposite.It needs to meet the first spacer block 122 when two magnetic cores 20
Thickness D1 gap when, the second spacer block 124 can be opened from the disconnecting with the first spacer block 122, so that two
One end of a magnetic core 20 is resisted against the opposite both sides of multiple first spacer blocks 122.
In some embodiments, the second spacer block 124 is in the form of a column, and the interval of multiple interconnecting pieces 126 is connected to the second interval
The outer surface of block 124.In this way, be easy that the second spacer block 124 is made to be detached from the first spacer block 122 in this way, it is simple in structure, it is convenient easy
Row.
Specifically, the second spacer block 124 can be rule or irregular column, regular column be, for example, it is cylindric or
Person's flat column, this is not restricted for the shape of the second spacer block 124.
Fig. 4, Fig. 7 and Fig. 8 are please referred to, in some embodiments, the outside of bobbin 10 is formed with winding slot 14, transformation
Device 100 includes cap 30, and cap 30 covers winding slot 14 at least partly, and cap 30 includes corresponding with 12 position of the first spacer
The second spacer 32, the second spacer 32 includes third spacer block 322 and connects the 4th spacer block of third spacer block 322
324, the thickness D3 of third spacer block 322 is identical as the thickness D1 of the first spacer block 122, the thickness D4 of the 4th spacer block 324 with
The thickness D2 of second spacer block 124 is identical, when one end of two magnetic cores 20 is separated by the first spacer block 122 respectively, two magnetic
The other end of core 20 is separated by third spacer block 322 respectively, is separated respectively by the second spacer block 124 in one end of two magnetic cores 20
When, the other end of two magnetic cores 20 is separated by the 4th spacer block 324 respectively.
In this way, by the first spacer block 122 and third spacer block 322 to separate the both ends of two magnetic cores 20 or pass through
Second spacer block 124 and the 4th spacer block 324 can make transformer 100 meet difference in this way to separate the both ends of two magnetic cores 20
The demand of specification or model, whole so that the cost of transformer 100 is relatively low, production efficiency is higher.
It should be pointed out that the first spacer block 122 can be consistent or inconsistent with the shapes and sizes of third spacer block 322.
Second spacer block 124 can be consistent or inconsistent with the shapes and sizes of the 4th spacer block 324.In one embodiment, first
Spacer block 122 is used to separate one end of two magnetic cores 20, and third spacer block 322 is used to separate the other end of two magnetic cores 20.
In another embodiment, the second spacer block 124 is used to separate one end of two magnetic cores 20, and the 4th spacer block 324 is for separating
The other end of two magnetic cores 20.First spacer 12 is located at the center clearance A of bobbin 10.Second spacer 32 is located at cap 30
Side interval B.
Referring to Fig. 5, in some embodiments, winding slot 14 includes primary winding slot 142 and secondary rolling thread slot 144,
Transformer 100 includes around the armature winding 141 for being located at primary winding slot 142 and around the secondary windings for being located at secondary rolling thread slot 144
143.So, so that the structure of transformer 100 is simple.
Specifically, armature winding 141 and secondary windings 143 can by the higher copper conductor of conductivity and aluminum conductor coiling and
At.In some embodiments, armature winding 141 and secondary windings 143 may respectively be laminar winding.Laminar winding construction is tight
It gathers, production efficiency is high.
Referring to Fig. 5, in some embodiments, winding slot 14 includes filament coil slot 146, primary winding slot 142
Between filament coil slot 146 and secondary rolling thread slot 144.Transformer 100 includes around the Filament Winding for being located at filament coil slot 146
145.In this way, external microwave generator can be connected by Filament Winding 145, so as to power to microwave generator.
It please refers to Fig.1 and Fig. 9, embodiment of the present invention also provides a kind of microwave cooking electric appliance 200.Microwave cooking electric appliance
200 include the transformer 100 and microwave generator 110 of any of the above-described embodiment.Microwave generator 110 connects transformer 100.
In the microwave cooking electric appliance 200 of the above embodiment, due to bobbin 10 to be internally provided with thickness of different sizes
The first spacer block 122 and the second spacer block 124, and two magnetic cores 20 can be resisted against the first interval according to actual demand
Block 122 or the second spacer block 124 are to adjust the gap size between two magnetic cores 20, to allow transformer 100 to meet
The demand of different size or model, whole so that the cost of transformer 100 is relatively low, production efficiency is higher.
It is appreciated that the Filament Winding 145 of transformer 100 connects microwave generator.Specifically, microwave generator 110 can
To be magnetron.Magnetron is a kind of electron tube being used for generating microwave energy.Electronics in magnetron is orthogonal
It under the control of stationary magnetic field and steady electric field, interacts with electromagnetic field of high frequency, from the output power of transformer 100
Energy conversion is obtained at microwave energy, to achieve the purpose that generate microwave energy.
Specifically, microwave cooking electric appliance 200 further includes cavity 120, door body (not shown) and fan 150.It is set in cavity 130
There is pallet 160, for placing food to be heated, door body is rotatably arranged in the front of cavity 130, is used to open pallet 160
Or the opening of cavity 130 is closed, microwave generator 110 is mounted on the outside of cavity 130 with transformer 100 and is set to fan
150 blowing direction.When microwave cooking electric appliance 200 works, transformer 100 provides operating current to microwave generator 110, micro-
Baud generator 110 generates the microwave energy for food in heating cavity 130.Meanwhile fan 150 is absorbable from extraneous sky
Gas, and air-flow is formed, air-flow may pass through air duct conduction in transformer 100, and carry out cooling and heat dissipation to transformer 100, cold
But after transformer 100, air-flow can be expelled to outside microwave cooking electric appliance 200 out of transformer 100 again.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means in conjunction with the embodiment
Or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the present invention.
In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be in any one or more embodiments or example with suitable side
Formula combines.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two,
Three, unless otherwise specifically defined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, and the scope of the present invention is limited by claim and its equivalent.
Claims (9)
1. a kind of transformer, which is characterized in that including：
The bobbin of insulation, the first spacer is provided on the inside pipe wall of the bobbin, and first spacer includes first
Spacer block and the second spacer block for connecting first spacer block, the thickness of second spacer block and first spacer block
Thickness differs；With
To two magnetic cores being inserted in the bobbin, one end of described two magnetic cores is respectively by first spacer block or institute
The second spacer block is stated to separate.
2. transformer as described in claim 1, which is characterized in that first spacer includes interconnecting piece, the interconnecting piece
Connect first spacer block and second spacer block, relative to first spacer block, second spacer block closer to
The center of the bobbin, the thickness of second spacer block are more than the thickness of first spacer block, first spacer block
Inside pipe wall in the bobbin is set, and the thickness of the interconnecting piece is less than the thickness of first spacer block.
3. transformer as claimed in claim 2, which is characterized in that the quantity of first spacer block be it is multiple, it is the multiple
First spacer block is provided at circumferentially spaced along the bobbin, and the quantity of the interconnecting piece is multiple, and each interconnecting piece connects
Connect each first spacer block and second spacer block.
4. transformer as claimed in claim 3, which is characterized in that second spacer block is located at the multiple first spacer block
It is formed by the center of cyclic structure.
5. transformer as claimed in claim 3, which is characterized in that second spacer block is in the form of a column, the multiple interconnecting piece
Interval is connected to the outer surface of second spacer block.
6. transformer as described in claim 1, which is characterized in that be formed with winding slot, the change on the outside of the bobbin
Depressor includes cap, and the cap covers the winding slot at least partly, and the cap includes and first spacer position
Corresponding second spacer is set, second spacer includes third spacer block and connects the 4th interval of the third spacer block
Block, the thickness of the third spacer block is identical as the thickness of the first spacer block, the thickness of the 4th spacer block with it is described
The thickness of second spacer block is identical, described two when one end of described two magnetic cores is separated by first spacer block respectively
The other end of magnetic core is separated by the third spacer block respectively, in one end of described two magnetic cores respectively by second spacer block
When separating, the other end of described two magnetic cores is separated by the 4th spacer block respectively.
7. transformer as claimed in claim 6, which is characterized in that the winding slot includes primary winding slot and secondary rolling thread
Slot, the transformer include around the armature winding for being located at the primary winding slot and around be located at the secondary rolling thread slot it is secondary around
Group.
8. transformer as claimed in claim 7, which is characterized in that the winding slot includes filament coil slot, it is described it is primary around
For wire casing between the filament coil slot and the secondary rolling thread slot, the transformer includes around being located at the filament coil slot
Filament Winding.
9. a kind of microwave cooking electric appliance, which is characterized in that generated including claim 1-8 any one of them transformer and microwave
Device, the microwave generator connect the transformer.
Priority Applications (2)
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| PCT/CN2018/091329 WO2019205250A1 (en) | 2018-04-26 | 2018-06-14 | Transformer and electronic microwave cooking device |
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| CN201810388066.0A CN108630415B (en) | 2018-04-26 | 2018-04-26 | Transformer and microwave cooking appliance |
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| CN106298189A (en) * | 2016-10-11 | 2017-01-04 | 岭南师范学院 | A kind of mechanical type controllable impedance |
| CN106409479A (en) * | 2016-11-30 | 2017-02-15 | 广东美的厨房电器制造有限公司 | Magnetic core assembly of transformer, transformer and electric equipment |
| CN208189375U (en) * | 2018-04-26 | 2018-12-04 | 广东美的厨房电器制造有限公司 | Transformer and microwave cooking electric appliance |
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| US6433663B1 (en) * | 1999-12-22 | 2002-08-13 | Thomson Licensing Sa | High voltage transformer arrangement |
| KR200194020Y1 (en) * | 2000-03-16 | 2000-09-01 | 엘지전자주식회사 | Fixing structure for ferrite core of fly back transformer |
| CN101894660A (en) * | 2009-05-19 | 2010-11-24 | 台达电子工业股份有限公司 | Transformer structure |
| CN102779628A (en) * | 2011-05-11 | 2012-11-14 | 台达电子工业股份有限公司 | Transformer |
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| CN106409479A (en) * | 2016-11-30 | 2017-02-15 | 广东美的厨房电器制造有限公司 | Magnetic core assembly of transformer, transformer and electric equipment |
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| CN108630415B (en) | 2024-07-16 |
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