CN208315346U - Transformer and microwave cooking electric appliance - Google Patents

Abstract

The utility model discloses a kind of transformer and microwave cooking electric appliances.Transformer includes the bobbin and two magnetic cores of insulation.The first spacer is provided on the inside pipe wall of bobbin.First spacer includes the first spacer block, the second spacer block and third spacer block.First spacer block is connected on the inside pipe wall of bobbin.Second spacer block and third spacer block are all connected with the first spacer block.The thickness of first spacer block is less than the thickness of the second spacer block and the thickness of third spacer block.The thickness of second spacer block is different from the thickness of third spacer block.One end of two magnetic cores is separated by the first spacer block or the second spacer block or third spacer block respectively.In above-mentioned transformer, two magnetic cores can be resisted against the first spacer block or the second spacer block or third spacer block according to actual demand to adjust the gap size between two magnetic cores, to make transformer can satisfy the demand of different size or model, entirety makes transformer, and cost is relatively low, and production efficiency is higher.

Description

Transformer and microwave cooking electric appliance

Technical field

The utility model relates to fields of home appliance technology, more specifically, are related to a kind of transformer and microwave cooking electricity Device.

Background technique

In the related art, transformer generally comprises various windings and magnetic core etc..Incorporated by reference to Figure 11, 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 magnetic gap is able to maintain between core, still, the mold for making transformer may be only available for a kind of transformer of specification, Can not be general, the higher cost of transformer is caused in this way, and production efficiency is lower.When there are different transformer difference production requirements When, transformer coil the number of turns has corresponding difference, there is corresponding difference so as to cause coil length-width ratio, thus need reasonably to adjust For magnetic gap to meet coupling efficiency, the winding bobbin of such mass production needs to re-start mold design, changes magnetic gap to meet Product requirement, thus the different design of skeleton closes standardization of products requirement.

Utility model content

The utility model embodiment provides a kind of transformer and microwave cooking electric appliance.

The transformer of the utility model embodiment 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, the second spacer block and third spacer block, first spacer block are connected on the inside pipe wall of the bobbin, institute It states the second spacer block and the third spacer block is all connected with first spacer block, the thickness of first spacer block is less than described The thickness of the thickness of second spacer block and the third spacer block, the thickness of second spacer block and the third spacer block Thickness is different；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 or the third spacer block separate.

In the transformer of above embodiment, thickness the first interval of different sizes is internally provided with due to bobbin Block, the second spacer block and third spacer block, and two magnetic cores can be resisted against according to actual demand the first spacer block or Second spacer block or third spacer block are to adjust the gap size between two magnetic cores, so that transformer be made to can satisfy difference The demand of specification or model, integrally making transformer, cost is relatively low, and production efficiency is higher.

In some embodiments, first spacer includes first connecting portion, and the first connecting portion includes first Connector and the second connector, the first connector connection first spacer block and second spacer block, described second Connector connects first spacer block and the third 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 first connector is multiple, each institute of each first connector connection State the first spacer block and second spacer block；

The quantity of second connector be it is multiple, each second connector connect each first spacer block and The third spacer block.

In some embodiments, first spacer includes second connecting portion, described in the second connecting portion connection Second spacer block and the third spacer block.

In some embodiments, the thickness of the first connecting portion is not more than the thickness of first spacer block, described The thickness of second connecting portion is no more than lesser thickness in second spacer block and the third spacer block.

In some embodiments, the second connecting portion includes multiple third connectors, multiple 4th connectors and Five connectors, the third connector and the 4th connector are alternately connected to the 5th company along the circumferential of the bobbin The side of fitting, each third connector connection second spacer block and the 5th connector, each described 4th Connector connects the third spacer block and the 5th connector.

In some embodiments, the quantity of first spacer block is multiple, and the second connecting portion is located at multiple institutes The center that the first spacer block is formed by cyclic structure is stated, second spacer block and the third spacer block surround described second Interconnecting piece.

In some embodiments, winding slot is formed on the outside of the bobbin, the transformer includes cover, described Cover at least partly covers the winding slot, and the cover includes corresponding second spacer of first spacer location, Second spacer includes the 4th spacer block, the 5th spacer block and the 6th spacer block, the 5th spacer block and the described 6th Spacer block is all connected with the third spacer block, and the thickness of the 4th spacer block is identical as the thickness of first spacer block, institute The thickness for stating the 5th spacer block is identical as the thickness of second spacer block, between the thickness and the third of the 6th spacer block The thickness of spacer block is identical；

When one end of described two magnetic cores is separated by first spacer block respectively, the other end point of described two magnetic cores It is not separated by the 4th spacer block, when one end of described two magnetic cores is separated by second spacer block respectively, described two The other end of a magnetic core is separated by the 5th spacer block respectively, in one end of described two magnetic cores respectively by the third interval When block separates, the other end of described two magnetic cores is separated by the 6th spacer block respectively.

In some embodiments, winding slot is formed on the outside of the bobbin, the winding slot includes primary coiling Slot and secondary rolling thread slot, the transformer include be wound around the armature winding of the primary winding slot and be wound around it is described it is secondary around The secondary windings of wire casing.

In some embodiments, the winding slot includes filament coil slot, and the secondary rolling thread slot position is in the filament Between winding slot and the primary winding slot, the transformer includes the Filament Winding for being wound around the filament coil slot.

The utility model embodiment also provides a kind of microwave cooking electric appliance comprising the transformation of any of the above-described embodiment Device and microwave generator, the microwave generator connect the transformer.

In the microwave cooking electric appliance of above embodiment, due to bobbin be internally provided with thickness it is of different sizes first Spacer block, the second spacer block and third spacer block, and two magnetic cores can be resisted against the first spacer block according to actual demand Either the second spacer block or third spacer block are to adjust the gap size between two magnetic cores, so that transformer be made to can satisfy The demand of different size or model, integrally making transformer, cost is relatively low, and production efficiency is higher.

The additional aspect and advantage of the embodiments of the present invention will be set forth in part in the description, partially will be from Become obvious in following description, or is recognized by the practice of the embodiments of the present invention.

Detailed description of the invention

In description of the above-mentioned and/or additional aspect and advantage of the utility model from combination following accompanying drawings to embodiment It will be apparent and be readily appreciated that, in which:

Fig. 1 is the structural schematic diagram of the first spacer of the utility model embodiment.

Fig. 2 is schematic cross-section of the first spacer in Fig. 1 along L-L line.

Fig. 3 is another structural schematic diagram of the first spacer of the utility model embodiment.

Fig. 4 is the schematic cross-section of the transformer of the utility model embodiment.

Fig. 5 is the partial structure diagram of the transformer of the utility model embodiment.

Structural representation when Fig. 6 is the first spacer removal third spacer block of the transformer of the utility model embodiment Figure.

Fig. 7 is that the first spacer of the transformer of the utility model embodiment removes the second spacer block and third spacer block When structural schematic diagram.

Fig. 8 is the structural schematic diagram of the second spacer of the utility model embodiment.

Fig. 9 is another structural schematic diagram of the second spacer of the utility model embodiment.

Figure 10 is the structural schematic diagram of the microwave cooking electric appliance of the utility model embodiment.

Figure 11 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, third spacer block 123, first connecting portion 125, the first connector 1252, the second connector 1254, Second connecting portion 127, third connector 1272, the 4th connector 1274, the 5th connector 1276, winding slot 14, primary coiling Slot 142, secondary rolling thread slot 144, armature winding 141, secondary windings 143, filament coil slot 146, Filament Winding 145, magnetic core 20, Cover 30, the second spacer 32, the 4th spacer block 322, the 5th spacer block 324, the 6th spacer block 326, microwave generator 110, Cavity 130, cavity 150, pallet 160.

Specific embodiment

The embodiments of the present invention is described further below in conjunction with attached drawing.Same or similar label in attached drawing Same or similar element or element with the same or similar functions are indicated from beginning to end.

In addition, the embodiments of the present invention described with reference to the accompanying drawing is exemplary, it is only used for explaining this reality With novel embodiment, and should not be understood as limiting the present invention.

In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down " It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

Fig. 1, Fig. 2 and Fig. 4 are please referred to, the utility model embodiment provides a kind of transformer 100.Transformer 100 includes The bobbin 10 of insulation and two magnetic cores 20.Two magnetic cores 20 are to being inserted in bobbin 10.It is set on the inside pipe wall 11 of bobbin 10 It is equipped with the first spacer 12.First spacer 12 includes the first spacer block 122, the second spacer block 124 and third spacer block 123. First spacer block 122 is connected on the inside pipe wall 11 of bobbin 10.Second spacer block 124 and third spacer block 123 are all connected with One spacer block 122.Thickness D2 and third spacer block 123 of the thickness D1 of first spacer block 122 less than second spacer block 124 Thickness D3.The thickness D2 of second spacer block 124 and the thickness D3 of third spacer block 123 are different.One end difference of two magnetic cores 20 It is separated by the first spacer block 122 or the second spacer block 124 or third spacer block 123.

In the transformer 100 of above embodiment, due to bobbin 10 be internally provided with thickness it is of different sizes first Spacer block 122, the second spacer block 124 and third spacer block 123, and two magnetic cores 20 can be resisted against according to actual demand First spacer block 122 or the second spacer block 124 or third spacer block 123 are big to adjust the interval between two magnetic cores 20 Small, so that transformer 100 be made to can satisfy the demand of different size or model, integrally making transformer 100, cost 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 between plug in magnetic core to needing to be kept according to actual demand Preset magnetic gap, so that transformer is able to satisfy default magnetic gap requirement.Two magnetic cores can generate 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 make transformation be able to maintain 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 or Person's third spacer block 123 separates, so that transformer 100 can satisfy the demand of different size or model, that is to say, that In the case where not increasing cost, the first spacer 12 of present embodiment is adapted to the transformer 100 of three kinds of different characteristics, and And transformer 100 can be made to can satisfy different coupling efficiency demands, the range of 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 second spacer block 124 The thickness D3 of thickness D2 and third spacer block 123, the thickness D2 of the second spacer block 124 are less than the thickness of third spacer block 123 D3。

Preferably, the range of the thickness D1 of the first spacer block 122 can be 1.4mm to 1.7mm, the thickness of the second spacer block 124 The range for spending D2 can be 1.9mm to 2.2mm, and the range of the thickness D3 of third spacer block 123 can be 2.4mm to 2.7mm.

Specifically, in some embodiments, the first spacer block 122 can be integrally in continuous ring-type and around the second interval Block 124 and third spacer block 123 and be arranged.Second spacer block 124 may include two spacer blocks substantially in solid sector disk, and Third spacer block 123 may also comprise two spacer blocks substantially in solid sector disk.Two spacer blocks of the second spacer block 124 and Two spacer blocks of third spacer block 123 are arranged along the circumferential alternate intervals of bobbin, and between the second spacer block 124 and third Spacer block 123 is surrounded by a discontinuous cyclic structure.It is appreciated that in other embodiments, the second spacer block 124 can also For single spacer block, third spacer block 123 can also be single spacer block.

When the magnetic gap between two magnetic cores 20 of transformer 100 needs to meet the thickness D3 of third spacer block 123, can incite somebody to action One end of two magnetic cores 20 abuts directly against the two sides (see Fig. 5) of third spacer block 123, at this point, the first spacer block 122 and Two spacer blocks 124 are still connect with third spacer block 123.

It, can be with when the magnetic gap between two magnetic cores 20 of transformer 100 needs to meet the thickness D2 of the second spacer block 124 Disconnect the connection (if having) of (such as cut) third spacer block 123 and the second spacer block 124, and disconnect third spacer block 123 and The connection of first spacer block 122, to make third spacer block 123 separate from the first spacer 12, at this point, can be by two magnetic cores 20 One end abut directly against the two sides of the second spacer block 124 (see Fig. 6).

It, can be with when the magnetic gap between two magnetic cores 20 of transformer 100 needs to meet the thickness D1 of the first spacer block 122 The connection (if having) of (such as cutting) third spacer block 123 and the first spacer block 122 is disconnected, and disconnects the second spacer block 124 With the connection of the first spacer block 122, so that the second spacer block 124 and third spacer block 123 be made to divide simultaneously from the first spacer 12 From at this point, one end of two magnetic cores 20 can be abutted directly against to the two sides of the first spacer block 122 (see Fig. 7).

In some embodiments, the first spacer block 122, the second spacer block 124 and third spacer block 123 can be in piece Shape.In one example, referring to Fig. 2, plane where plane, the second spacer block 124 where the first spacer block 122, the Plane where three spacer block 123 can be generally aligned in the same plane.In another example, referring to Fig. 3, the second spacer block The plane where plane and third spacer block 123 where 124 is identical, and between the plane and second where the first spacer block 122 Plane where spacer block 124 is located at Different Plane, the position of the first spacer block 122, the second spacer block 124 and third spacer block 123 Set that this is not restricted.In other examples, the plane where the second spacer block 124, the plane where third spacer block 123 and Plane where first spacer block 122 is respectively positioned on not same plane.

Referring to Fig. 1, in some embodiments, the first spacer 12 includes first connecting portion 125, first connecting portion 125 include the first connector 1252 and the second connector 1254, and the first connector 1252 connects between the first spacer block 122 and second Spacer block 124, the second connector 1254 connect the first spacer block 122 and third spacer block 123.

In this way, passing through the connection function of the first connector 1252 and the second connector 1254, the second spacer block 124 can be made It is fixed on the first spacer block 122 with third spacer block 123, and the second spacer block can be made by disconnecting the first connector 1252 124 are rapidly separated the connection with the first spacer block 122, and disconnecting the second connector 1254 can make third spacer block 123 quickly de- It is easy to operate from the connection with the first spacer block 122.

Referring to Fig. 1, in some embodiments, the quantity of the first spacer block 122 is multiple.Multiple first spacer blocks 122 being provided at circumferentially spaced along bobbin 10.The quantity of first connector 1252 is multiple.Each first connector 1252 connects Connect each first spacer block 122 and the second spacer block 124.The quantity of second connector 1254 is multiple.Each second connector Each first spacer block 122 of 1254 connections and third spacer block 123.

In this way, the manufacturing cost of the first spacer 12 can be made to reduce the first connector 1252 and the and be easy in this way Two connectors 1254 disconnect.

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 It is arranged every 90 degree.The quantity of second spacer block 124 is 2, and the quantity of third spacer block 123 is also 2, the second spacer block 124 It is arranged with 123 alternate intervals of third spacer block and is formed by among cyclic structure in multiple first spacer blocks 122.Between each second Pre-determined distance is kept between spacer block 124 and each third spacer block 123 of adjacent spaces setting, each second spacer block 124 Radian is 90 degree, and the radian of each third spacer block 123 is also 90 degree.

Further, horizontally disposed 2 the first spacer blocks 122, the first connector 1252 and the second spacer block 124 can Positioned at same level.2 the first spacer blocks 122, the second connector 1254 and the third spacer block 123 arranged vertically can positions In same vertical plane.

In some embodiments, the first spacer 12 includes second connecting portion 127, the connection of second connecting portion 127 second Spacer block 124 and third spacer block 123.

In this way, the second spacer block 124 and third spacer block 123 can be made to link together by second connecting portion 127, so that The structure of first spacer 12 is more stable.

Specifically, second connecting portion 127 can be located at the center of the first spacer 12.Fig. 1 and Fig. 2 is please referred to, at certain In a little embodiments, second connecting portion 127 includes multiple third connectors 1272, multiple 4th connectors 1274 and the 5th connection Part 1276, third connector 1272 and the 4th connector 1274 are alternately connected to the 5th connector 1276 along the circumferential of bobbin 10 Side, each third connector 1272 connects the second spacer block 124 and the 5th connector 1276, each 4th connector 1274 Connect third spacer block 123 and the 5th connector 1276.

In this way, may make the second interval by third connector 1272, the 4th connector 1274 and the 5th connector 1276 Block 124 and third spacer block 123 link together, and structure is simple, and by cutting third connector 1272 or the 4th company Fitting 1274 may make the second spacer block 124 and third spacer block 123 quickly to disconnect.

Structure or square structure specifically, the 5th connector 1276 assumes diamond in shape, and third connector 1272 and the 4th connection Part 1274 can be in strip structure.The quantity of third connector 1272 is 2, and the quantity of the 4th connector 1274 is 2.2 Three connectors 1272 are connected to two corner locations on a diagonal line of the 5th connector 1276,2 the 4th connections Part 1274 is connected to two corner locations on another diagonal line of the 5th connector 1276.Second formed in this way connects Socket part 127 can provide more uniform connecting strength to the first spacer 12.

In one embodiment, it disconnects the first connector 1252 and third connector 1272 may make the second spacer block 124 separate from the first spacer 12, and also disconnect the second connector 1254 and the 4th connector 1274 makes third interval Block 123 is separated from the first spacer 12, and one end of two magnetic cores 20 can be abutted directly against to 122 phase of the first spacer block at this time The two sides of back (see Fig. 7).

In another embodiment, it disconnects the second connector 1254 and the 4th connector 1274 may make third spacer block 123 separate from the first spacer 12, at this point, it is opposite that one end of two magnetic cores 20 can be abutted directly against to the second spacer block 124 Two sides (see Fig. 6).

In yet another embodiment, the second spacer block 124 and third spacer block 123 are connected by second connecting portion 127 Together, at this point, one end of two magnetic cores 20 can be abutted directly against to the opposite two sides of third spacer block 123 (see Fig. 5).

In some embodiments, the thickness of first connecting portion 125 no more than the first spacer block 122 thickness D1, second The thickness of interconnecting piece 127 is no more than lesser thickness in the second spacer block 124 and third spacer block 123.

So, so that the first spacer block 122, the second spacer block 124 and third spacer block 123 play interval action, It prevents that interconnecting piece is thicker and touches one end of magnetic core 20, and influence the distance of two 20 one end of magnetic core.

It is appreciated that the thickness of first connecting portion 125 is not more than the thickness D1 of the first spacer block 122, that is to say, that one In a example, the thickness of first connecting portion 125 can be equal to the thickness D1 of the first spacer block 122, or in another example, The thickness of first connecting portion 125 can be less than the thickness D1 of the first spacer block 122.The thickness of second connecting portion 127 is no more than the Lesser thickness in two spacer blocks 124 and third spacer block 123, that is to say, that in one example, second connecting portion 127 Thickness can be equal to lesser thickness in the second spacer block 124 and third spacer block 123, or in another example, and second The thickness of interconnecting piece 127 is less than lesser thickness in the second spacer block 124 and third spacer block 123.Between it should be pointed out that The setting of spacer block and interconnecting piece thickness and the setting of position be in order to guarantee that two separating for magnetic core 20 are realized by spacer block, and Connection between spacer block is realized by interconnecting piece.And operation of thickness lesser interconnecting piece when being also convenient for disconnecting portion.

In some embodiments, second connecting portion 127 is located at multiple first spacer blocks 122 and is formed by cyclic structure Center, the second spacer block 124 and third spacer block 123 surround second connecting portion 127.In this way, the structure of the first spacer is simple And stablize, it is integrally not easy to deform, guarantees efficiency when transformer 100 assembles, and be easy so that the second spacer block 124 and the Three spacer blocks 123 disconnect.

Fig. 4, Fig. 8 and Fig. 9 are please referred to, in some embodiments, the outside of bobbin 10 is formed with winding slot 14.Transformation Device 100 includes cover 30, and cover 30 at least partly covers winding slot 14.Cover 30 includes corresponding with 12 position of the first spacer The second spacer 32.Second spacer 32 includes the 4th spacer block 322, the 5th spacer block 324 and the 6th spacer block 326.The Five spacer blocks 324 and the 6th spacer block 326 are all connected with third spacer block 123.The interval the thickness D4 of 4th spacer block 322 and first The thickness D1 of block 122 is identical.The thickness D5 of 5th spacer block 324 is identical as the thickness D2 of the second spacer block 124.6th spacer block 326 thickness D6 is identical as the thickness D3 of third spacer block 123.

When one end of two magnetic cores 20 is separated by the first spacer block 122 respectively, the other end of two magnetic cores 20 respectively by 4th spacer block 322 separates.When one end of two magnetic cores 20 is separated by the second spacer block 124 respectively, two magnetic cores 20 it is another One end is separated by the 5th spacer block 324 respectively.When one end of two magnetic cores 20 is separated by third spacer block 123 respectively, two The other end of magnetic core 20 is separated by the 6th spacer block 326 respectively.

In this way, by the first spacer block 122 and the 4th spacer block 322 to separate the both ends of two magnetic cores 20 or pass through Second spacer block 124 and the 5th spacer block 324 are to separate the both ends of two magnetic cores 20 or by third spacer block 123 and the Six spacer blocks 326 can make transformer 100 meet the needs of different size or model in this way to separate the both ends of two magnetic cores 20, Entirety makes transformer 100, and cost is relatively low, and 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 the 4th spacer block 322. Second spacer block 124 can be consistent or inconsistent with the shapes and sizes of the 5th spacer block 324.Between third spacer block 123 and the 6th The shapes and sizes of spacer block 326 can be consistent or inconsistent.In one embodiment, the first spacer block 122 is for separating two One end of magnetic core 20, the 4th spacer block 322 are used to separate the other end of two magnetic cores 20.In another embodiment, second Spacer block 124 is used to separate one end of two magnetic cores 20, and the 5th spacer block 324 is used to separate the other end of two magnetic cores 20.? In another embodiment, third spacer block 123 is used to separate one end of two magnetic cores 20, and the 6th spacer block 326 is for separating The other end of two magnetic cores 20.First spacer 12, which is located in bobbin 10, is formed by center magnetic by one end of two magnetic cores 20 Gap A.The side that second spacer 32 is located at cover 30 is formed by interval B by the other end of two magnetic cores 20.

Referring to Fig. 4, in some embodiments, the outside of bobbin 10 is formed with winding slot 14, winding slot 14 includes Primary winding slot 142 and secondary rolling thread slot 144, the transformer 100 include the armature winding for being wound around primary winding slot 142 141 and it is wound around the secondary windings 143 of secondary rolling thread slot 144.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, high production efficiency.In present embodiment, primary winding slot 142 be it is single, secondary rolling thread slot 144 include three sub- winding slots.

Referring to Fig. 4, in some embodiments, winding slot 14 includes filament coil slot 146, secondary rolling thread slot 144 Between filament coil slot 146 and primary winding slot 142, transformer 100 includes the Filament Winding for being wound around 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.

Fig. 1, Fig. 2 and Figure 10 are please referred to, the utility model embodiment also provides a kind of microwave cooking electric appliance 200.Microwave Cooking appliance 200 includes 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 above embodiment, due to bobbin 10 to be internally provided with thickness of different sizes The first spacer block 122, the second spacer block 124 and third spacer block 123, and two magnetic cores 20 can be according to actual demand The first spacer block 122 or the second spacer block 124 or third spacer block 123 are resisted against to adjust between two magnetic cores 20 Gap size integrally makes the cost of transformer 100 so that transformer 100 be made to can satisfy the demand of different size or model Lower, production efficiency is higher.

It is appreciated that the Filament Winding 145 and secondary windings 143 of transformer 100 connect microwave generator 110.Specifically, Microwave generator 110 can be magnetron.Magnetron is a kind of electron tube for generating microwave energy.Electricity in magnetron Son interacts under the control of orthogonal stationary magnetic field and steady electric field with electromagnetic field of high frequency, from transformer Energy conversion is obtained in 100 output power into microwave energy, to achieve the purpose that generate microwave energy.

Specifically, microwave cooking electric appliance 200 further includes cavity 130, door body (not shown) and fan 150.In cavity 130 Equipped with pallet 160, for pallet 160 for placing food to be heated, door body is rotatably arranged in the front of cavity 130, for beating The opening of closed chamber body 130 is opened or closed, microwave generator 110 and transformer 100 are mounted on the outside of cavity 130 and are 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 and conduct 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 of the utility model or show In example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.And And particular features, structures, materials, or characteristics described can be in any one or more embodiments or example to close Suitable mode combines.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting 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 described feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three, unless otherwise specifically defined.

Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model It inside can make changes, modifications, alterations, and variations to the above described embodiments, the scope of the utility model is by claim and its is equal Object limits.

Claims (11)

1. a kind of transformer characterized by comprising

The bobbin of insulation, the first spacer is provided on the inside pipe wall of the bobbin, and first spacer includes first Spacer block, the second spacer block and third spacer block, first spacer block are connected on the inside pipe wall of the bobbin, and described Two spacer blocks and the third spacer block are all connected with first spacer block, and the thickness of first spacer block is less than described second The thickness of the thickness of spacer block and the third spacer block, the thickness of the thickness of second spacer block and the third spacer block It is different；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 It states the second spacer block or the third spacer block separates.

2. transformer as described in claim 1, which is characterized in that first spacer includes first connecting portion, and described One interconnecting piece includes the first connector and the second connector, and first connector connects first spacer block and described second Spacer block, second connector connect first spacer block and the third 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, the quantity of first connector be it is multiple, each described first Connector connects each first spacer block and second spacer block；

The quantity of second connector be it is multiple, each second connector connects each first spacer block and described Third spacer block.

4. transformer as claimed in claim 2, which is characterized in that first spacer includes second connecting portion, and described Two interconnecting pieces connect second spacer block and the third spacer block.

5. transformer as claimed in claim 4, which is characterized in that the thickness of the first connecting portion is not more than between described first The thickness of spacer block, the thickness of the second connecting portion is no more than lesser thickness in second spacer block and the third spacer block Degree.

6. transformer as claimed in claim 4, which is characterized in that the second connecting portion includes multiple third connectors, more The circumferential direction alternating of a 4th connector and the 5th connector, the third connector and the 4th connector along the bobbin It is connected to the side of the 5th connector, each third connector connects second spacer block and the 5th connection Part, each 4th connector connect the third spacer block and the 5th connector.

7. transformer as claimed in claim 4, which is characterized in that the quantity of first spacer block be it is multiple, described second Connecting portion is formed by the center of cyclic structure in multiple first spacer blocks, between second spacer block and the third Spacer block surrounds the second connecting portion.

8. 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 cover, and the cover at least partly covers the winding slot, and the cover includes and first spacer position Set corresponding second spacer, second spacer includes the 4th spacer block, the 5th spacer block and the 6th spacer block, and described the Five spacer blocks and the 6th spacer block are all connected with the third spacer block, between the thickness and described first of the 4th spacer block The thickness of spacer block is identical, and the thickness of the 5th spacer block is identical as the thickness of second spacer block, the 6th spacer block Thickness it is identical as the thickness of the third spacer block；

When one end of described two magnetic cores is separated by first spacer block respectively, the other end of described two magnetic cores respectively by 4th spacer block separates, when one end of described two magnetic cores is separated by second spacer block respectively, described two magnetic The other end of core is separated by the 5th spacer block respectively, one end of described two magnetic cores respectively by the third spacer block every When opening, the other end of described two magnetic cores is separated by the 6th spacer block respectively.

9. transformer as described in claim 1, which is characterized in that be formed with winding slot on the outside of the bobbin, it is described around Wire casing includes primary winding slot and secondary rolling thread slot, the transformer include be wound around the primary winding slot armature winding and It is wound around the secondary windings of the secondary rolling thread slot.

10. transformer as claimed in claim 9, which is characterized in that the winding slot includes filament coil slot, it is described it is secondary around Wire casing is located between the filament coil slot and the primary winding slot, and the transformer includes being wound around the filament coil slot Filament Winding.

11. a kind of microwave cooking electric appliance, which is characterized in that produced including the described in any item transformers of claim 1-10 and microwave Raw device, the microwave generator connect the transformer.