CN210688349U - Cooking utensil - Google Patents
Cooking utensil Download PDFInfo
- Publication number
- CN210688349U CN210688349U CN201921495420.6U CN201921495420U CN210688349U CN 210688349 U CN210688349 U CN 210688349U CN 201921495420 U CN201921495420 U CN 201921495420U CN 210688349 U CN210688349 U CN 210688349U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- cooking appliance
- fan
- rib
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Induction Heating Cooking Devices (AREA)
Abstract
The utility model discloses a cooking utensil, which comprises a shell, a circuit board and a protective structure, wherein an installation cavity is formed in the shell, the shell is provided with an opening communicated with the installation cavity, the side wall provided with the opening is an installation wall, the circuit board is arranged in the installation cavity and arranged towards the installation wall, the projection of the circuit board on the installation wall is staggered with the opening, so that an installation area is formed on the inner side surface of the installation wall and between the projection of the circuit board and the opening, the protective structure is formed on the inner side surface of the installation wall and at least partially positioned in the installation area to increase the creepage distance from the opening to the circuit board, increase the creepage distance from the opening to the circuit board and improve the safety of the circuit board in the cooking utensil, the user experience is improved.
Description
Technical Field
The utility model relates to a cooking utensil technical field, in particular to cooking utensil.
Background
The space inside the cooking utensil product is increasingly compact, so that the circuit board is closer to the edge of the product, and when the safe distance from the circuit board to the position of the product opening is insufficient, a safety accident can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cooking utensil aims at improving the security of inside circuit board to improve user experience.
In order to achieve the above object, the utility model provides a cooking utensil, include:
the mounting structure comprises a shell, a mounting cavity and a mounting base, wherein the shell is internally provided with an opening communicated with the mounting cavity, and the side wall provided with the opening is a mounting wall;
the circuit board is arranged in the mounting cavity and faces the mounting wall, and the projection of the circuit board on the mounting wall is staggered with the opening, so that a mounting area is formed between the projection of the circuit board and the opening on the inner side surface of the mounting wall; and the number of the first and second groups,
and the protective structure is formed on the inner side surface of the mounting wall, at least partially positioned in the mounting area and used for increasing the creepage distance from the opening to the circuit board.
Optionally, the protective structure includes a first insulating protective rib protruding on an inner side surface of the mounting wall, and at least one section of the first insulating protective rib is located in the mounting area.
Optionally, in the extending direction of the circuit board, the distance between the first insulating protection rib and the circuit board is D1，D1Not less than 1.5 mm; and/or the presence of a gas in the gas,
in the extending direction of the circuit board, the distance between the first insulating protection rib and the circuit board is D1In the cooking utensil, the electric gap is D0And D is1＞D0。
Optionally, the thickness of the first insulating protection rib is t, and t is greater than or equal to 1.2 mm.
Optionally, the distance between the circuit board and the inner side surface of the mounting wall is H1Of said first insulating protective ribHeight of H2And H is2＞H1。
Optionally, the first insulating protection rib is annularly arranged, and a projection of the circuit board on the mounting wall is located on an inner side of the first insulating protection rib.
Optionally, the first insulating protection rib is provided in plurality and is gradually arranged close to the opening.
Optionally, the minimum creepage distance allowed by the circuit board in the cooking utensil is L0；
The distance between the circuit board and the inner side surface of the mounting wall is H1The height of the first insulating protection rib is H2The thickness of the first insulating protection rib is t, and H1+H2+D1+t≥L0。
Optionally, a second insulating protection rib is further arranged on the inner side surface of the mounting wall, and the second insulating protection rib is arranged right opposite to the circuit board and used for fixedly supporting the circuit board.
Optionally, the height of the second insulating protection rib is H3And H is3≥3mm。
Optionally, the second insulating protection rib is annularly arranged and is arranged opposite to the periphery of the circuit board.
Optionally, the shell is further provided with a shell air inlet and a shell air outlet, and a heat exchange air duct is formed between the shell air inlet and the shell air outlet;
the cooking utensil is still including locating the fan of installation intracavity, the fan is in on the heat transfer wind channel, be used for with the outer air suction of casing air intake extremely the installation intracavity accomplish the heat exchange after, certainly the discharge of casing air outlet department.
Optionally, the circuit board is provided with a heating element, and the heating element is arranged in the heat exchange air duct.
Optionally, the heating element is disposed adjacent to the blower and/or the housing air outlet.
Optionally, the heat generating component includes one or more of an insulated gate bipolar transistor, a bridge stack, and a fuse.
Optionally, a flow guide rib plate is further arranged in the installation cavity, at least one flow guide groove with an opening at one end is defined by the flow guide rib plate along the periphery of the fan, and the opening end of the flow guide groove faces the heating element and is used for collecting and guiding the air blown out from the air outlet end of the fan to the heating element.
Optionally, the housing air inlet and the housing air outlet are formed at the bottom of the housing;
the bottom surface of the shell is provided with an anti-backflow rib plate, and the anti-backflow rib plate is positioned on one side, close to the fan, of the shell air outlet and used for guiding the air blown out from the shell air outlet to the direction far away from the fan.
Optionally, the bottom of the housing is provided with a plurality of supporting feet;
the height difference between the lower end face of the backflow-preventing rib plate and the lower end face of the supporting leg is d, and d is larger than or equal to 0.5mm and smaller than or equal to 1 mm.
Optionally, the cooking appliance is an induction cooker or an infrared heating furnace.
Optionally, a fan air inlet located at the bottom of the fan and a fan air outlet located on the periphery of the fan are formed in the fan, and the fan air inlet corresponds to the shell air inlet.
Optionally, the fan includes:
the stator assembly is fixedly installed in the installation cavity; and the number of the first and second groups,
a rotor assembly including a rotor blade disc rotatably mounted within the mounting cavity relative to the stator assembly;
the fan air inlet and the fan air outlet are formed in the rotor blade disc.
Optionally, the rotor blade disk comprises:
the rotary mounting seat is rotatably mounted in the mounting cavity relative to the stator assembly and is provided with a first end close to the shell air inlet and a second end far away from the shell air inlet;
the air guide ring is sleeved at the second end; and the number of the first and second groups,
the blades extend from the outer side surface of the rotating installation seat along the radial direction of the rotating installation seat, are distributed at intervals along the circumferential direction of the rotating installation seat and are positioned on one side, close to the first end, of the air guide ring;
the air inlet of the fan is arranged on one side of the air inlet close to the shell, and the fan air outlet is arranged at the outer end of each blade.
Optionally, the rotor blade disc further includes a connection ring, and the connection ring is disposed on an end surface of the plurality of blades near one end of the housing air inlet and located at an outer end of the plurality of blades.
Optionally, the cross section of the blade is increased along the radial direction of the rotary mounting seat.
Optionally, the wind guide ring and the plurality of blades are integrally arranged.
Optionally, end surfaces of the plurality of blades, which are far away from one end of the air inlet of the housing, are arranged in a flush manner;
the wind guide ring is detachably mounted on the plurality of blades.
Optionally, the cooking appliance is an induction cooker or an infrared heating furnace.
The technical scheme provided by the utility model in, protective structure form in on the medial surface of installation wall, and be located the circuit board with between the opening, increased the opening extremely creepage distance between the circuit board has promoted the security of cooking utensil internal circuit board has improved user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic top view of an embodiment (a placement angle) of a cooking device according to the present invention;
FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is an enlarged schematic view of detail B of FIG. 2;
FIG. 4 is a schematic top view of the cooking device of FIG. 1 (at another angle of placement);
FIG. 5 is a bottom view of the cooking appliance of FIG. 1;
fig. 6 is a side view schematically illustrating the cooking appliance of fig. 1.
FIG. 7 is a perspective view of the cooking device (partial structure) of FIG. 1;
FIG. 8 is a schematic perspective exploded view of the cooking appliance of FIG. 7;
FIG. 9 is a schematic top view of the cooking appliance of FIG. 7;
FIG. 10 is a schematic cross-sectional view taken along C-C of FIG. 9;
FIG. 11 is a perspective view of the stator assembly of FIG. 7 assembled (inverted) with the rotor blade disk;
FIG. 12 is a top view schematic illustration of the stator assembly and rotor blade disk assembly (upright) of FIG. 7;
fig. 13 is a schematic cross-sectional view taken along D-D in fig. 12.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The space inside the cooking utensil product is increasingly compact, so that the circuit board is closer to the edge of the product, and when the safe distance from the circuit board to the position of the product opening is insufficient, a safety accident can be caused.
In view of this, the present invention provides a cooking appliance, and fig. 1 to 13 are views illustrating an embodiment of the cooking appliance provided by the present invention.
Referring to fig. 1 to 3, the cooking device 100 includes a housing 1, a circuit board 2 and a protective structure 3, wherein a mounting cavity 11 is formed in the housing 1, the housing 1 is provided with an opening 12 communicating with the mounting cavity 11, a side wall provided with the opening 12 is a mounting wall, the circuit board 2 is disposed in the mounting cavity 11 and faces the mounting wall, a projection of the circuit board 2 on the mounting wall is staggered from the opening 12, so that a mounting area is formed on an inner side surface of the mounting wall and between the projection of the circuit board 2 and the opening 12, and the protective structure 3 is formed on the inner side surface of the mounting wall and at least partially located in the mounting area to increase a creepage distance between the opening 12 and the circuit board 2.
The utility model provides an among the technical scheme, protective structure 3 form in on the medial surface of installation wall, and be located circuit board 2 with between the opening 12, increased opening 12 extremely creepage distance between the circuit board has promoted cooking utensil 100 inside circuit board 2's security has improved user experience.
It should be noted that, in the embodiment of the present invention, the specific type of the cooking apparatus 100 is not limited, for example, the cooking apparatus may be an electric cooker, a cooking machine, or the like, and may also be an induction cooker or an infrared heating furnace, and the cooking apparatus 100 is described in detail below as an induction cooker.
In consideration of the electrical clearance, specifically, the distance between the first insulating protection rib 31 and the circuit board 2 in the extending direction of the circuit board 2 is D1In the cooking utensil 100, the electric gap is D0And D is1＞D0When the distance between the first insulating protection rib 31 and the circuit board 2 is set to be larger, the creepage distance is calculated along the surface of the first insulating protection rib 31, and the creepage distance at this time at least comprises the sum of the heights of the two first insulating protection ribs 31 and the thicknesses of the first insulating protection ribs 31, so that the creepage distance is set to be larger, in one embodiment, the voltage of the circuit board 2 in the cooking appliance 100 reaches 1.6 kv-2 kv, and D at this time1≥1.5mm。
The creepage distance includes the thickness of the first insulation protection rib 31, in an embodiment, the thickness of the first insulation protection rib 31 is t, and t is greater than or equal to 1.2mm, so that the strength of the first insulation protection rib 31 is ensured, the creepage distance between the opening 12 and the circuit board is larger, and the safety of the circuit board 2 inside the cooking utensil 100 is improved.
Considering that external dust and moisture can enter the mounting cavity 11 through the opening 12, in one embodiment, the distance between the circuit board 2 and the inner side surface of the mounting wall is H1The height of the first insulating protection rib 31 is H2And H is2＞H1So set up, first insulation protection muscle 31 plays and separates shelves dust, aqueous vapor and circuit board 2 reduces the risk that circuit board 2 takes place the short circuit has better effect.
Further, in an embodiment, the first insulating protection rib 31 is annularly disposed, and a projection of the circuit board 2 on the mounting wall is located on an inner side of the first insulating protection rib 31, so as to further prevent dust and moisture from contacting the circuit board 2, and further reduce a risk of short circuit of the circuit board 2.
Furthermore, in order to increase the creepage distance between the opening 12 and the circuit board 2, in an embodiment, the first insulating protection rib 31 is provided in a plurality of numbers, and is gradually arranged to be close to the opening 12, and the creepage distance is increased by twice the sum of the height of the first insulating protection rib 31 and the thickness of the first insulating protection rib 31, so that the creepage distance between the opening 12 and the circuit board 2 can be increased by times.
It should be noted that the creepage distance from the opening 12 to the circuit board 2 is required to meet the requirement of safe creepage distance of the product, and specifically, the minimum creepage distance allowed by the circuit board 2 in the cooking utensil 100 is L0The distance between the circuit board 2 and the inner side surface of the mounting wall is H1The height of the first insulating protection rib 31 is H2The thickness of the first insulating protection rib 31 is t, and H1+H2+D1+t≥L0So configured, the safety performance of the cooking appliance 100 product is satisfied.
The technical scheme of the utility model in, circuit board 2 need with 1 interval of casing is fixed to be set up, specifically, still be equipped with the insulating protection muscle 32 of second on the medial surface of installation wall, the insulating protection muscle 32 of second is just right circuit board 2 sets up for fixed stay circuit board 2 is forming can form in the time of first insulating protection muscle 31 the insulating protection muscle 32 of second, so set up, be convenient for form the support the interval bearing structure of circuit board 2.
In particular, the second insulating protection rib 32 has a height H in consideration of the fact that the circuit board 2 can be disposed away from the housing 1 to increase a creepage distance3And H is3Not less than 3mm, the larger the height setting of second insulating protection muscle 32, circuit board 2 is far away from opening 12, the better the security performance of circuit board 2.
In order to further reduce the contact between dust and moisture and the circuit board 2, in an embodiment, the second insulating protection rib 32 is annularly disposed and disposed opposite to the periphery of the circuit board 2, so as to reduce the contact probability between dust and moisture and the circuit board 2, and further improve the safety performance of the circuit board 2.
The heat dissipation of the cooking appliance 100 is also a matter of the present invention, and particularly, referring to fig. 4 to 6, in one embodiment, the shell 1 is also provided with a shell air inlet 13 and a shell air outlet 14, a heat exchange air channel is formed between the shell air inlet 13 and the shell air outlet 14, the cooking appliance 100 further comprises a fan 4 disposed in the mounting cavity 11, the fan 4 is disposed on the heat exchange air duct and is configured to draw air outside the housing air inlet 13 into the mounting cavity 11, after the heat exchange is completed in the installation cavity 11, the air is discharged from the housing air outlet 14, and the fan 4 is disposed in the installation cavity 11, so as to facilitate the heat dissipation of the cooking appliance 100, the opening 12 may be one of the housing inlet 13 and the housing outlet 14, or may be another opening 12 different from the housing inlet 13 and the housing outlet 14.
Be equipped with a plurality of components and parts on the circuit board 2, consider that fully dispel the heat to the components and parts that generate heat, specifically, circuit board 2 is equipped with heating components and parts 5, heating components and parts 5 lay in the heat transfer wind channel, to heating components and parts 5 carry out concentrated heat dissipation, and the radiating effect is better.
Further, heating element 5 is close to fan 4 and/or casing air outlet 14 sets up, is close to fan 4 and/or casing air outlet 14's regional radiating effect is better, is more favorable to heating element 5's heat dissipation has better effect.
The heating components 5 in the cooking appliance 100 are many, for example, the igbt, the bridge stack, and the fuse are components with high heat productivity, and the components are disposed close to the blower 4 and/or the housing air outlet 14 to radiate heat in a targeted manner, so that the heat radiation effect is better.
In order to better guide the wind of the fan 4 to the heating element 5, in an embodiment, a flow guide rib plate 6 is further disposed in the mounting cavity 11, at least one flow guide groove with an open end is defined along the periphery of the fan 4 by the flow guide rib plate 6, the open end of the flow guide groove faces the heating element 5, so as to converge and guide the wind blown out from the wind outlet end of the fan 4 to the heating element 5, and the flow guide groove is more fit with the shape of the fan 4, so that the wind emitted from the fan 4 is guided to the housing air outlet 14 more, the wind converging effect is better, the wind loss is reduced, and the heat dissipation of the heating element 5 is maximized.
The technical scheme of the utility model in, do not restrict the type of fan can be axial fan, also can be for centrifugal fan etc. in an embodiment, fan 4 is axial fan 4, just axial fan 4 is from one end air inlet, follows the circumference air-out of 4 shells of axial fan is convenient for the heat dissipation of the components and parts in the cooking utensil 100.
Considering the experience of the user, the housing air inlet 13 and the housing air outlet 14 of the cooking appliance 100 are generally disposed at the bottom of the housing 1, and at this time, in order to reduce the air movement between the housing air outlet 14 and the housing air inlet 13, in an embodiment, the housing air outlet 14 is formed at the bottom of the housing 1, the bottom surface of the housing 1 is provided with a backflow-preventing rib plate 7, and the backflow-preventing rib plate 7 is located at a side of the housing air outlet 14 close to the fan 4, so as to guide the air blown out from the housing air outlet 14 to a direction away from the fan 4, so as to reduce the backflow of the hot air emitted from the housing air outlet 14 into the housing air inlet 13 as much as possible, thereby achieving a better effect.
In order to obtain a better anti-backflow effect, the height of the anti-backflow rib plate 7 is set as high as possible, but the height of the anti-backflow rib plate 7 is not higher than that of the supporting leg 8 for supporting the casing 1, specifically, the bottom of the casing 1 is provided with a plurality of supporting legs 8, the height difference between the lower end surface of the anti-backflow rib plate 7 and the lower end surface of the supporting leg 8 is d, and d is greater than or equal to 0.5mm and less than or equal to 1mm, so that the anti-backflow rib plate 7 has a better anti-backflow effect, and the supporting leg 8 can well support the casing 1.
The technical scheme of the utility model in, the air inlet end of fan 4 is formed in 4 axial one ends of fan, and the air outlet end form in 4 week sides of fan, specifically, please refer to fig. 7 to 8, be formed with on the fan 4 and be located the fan air intake 41 of 4 bottoms of fan and being located 4 week sides of fan air outlet 42, fan air intake 41 corresponds casing air intake 13 sets up, so sets up, makes 1 inside better heat transfer wind channel that forms of casing, the heat dissipation of the components and parts 5 of being convenient for generate heat.
In consideration of attractive appearance and convenience, the air draft of the fan 4 is realized, in one embodiment, a plurality of grid bars arranged at intervals are arranged at the air inlet 13 of the shell, and the grid bars are arranged in an arc shape, so that the air draft of the fan 4 is realized.
The fan 4 may be a centrifugal fan, however, the structure of the centrifugal fan is complex, and the air channel is limited by the casing, in this embodiment, referring to fig. 9 to 11, a fan without a casing is used to replace a centrifugal fan in the prior art, and specifically, the fan 4 comprises a stator assembly 43 and a rotor assembly, the stator assembly 43 is fixedly installed in the installation cavity 11, the rotor assembly 43 includes a rotor blade disc 44 rotatably mounted within the mounting cavity 11 relative to the stator assembly 43, wherein, the fan inlet 41 and the fan outlet 42 are both formed on the rotor blade disc 44, the fan air inlet 41 and the fan air outlet 42 are directly formed by the rotor blade disc 44, the structure is simple, and the fan 4 is convenient to dissipate heat of the heating element 5 in the shell 1.
Specifically, in an embodiment, the rotor blade disk 44 includes a rotating mounting seat 441, a wind guiding ring 442 and a plurality of blades 443, the rotating mounting seat 441 is rotatably mounted in the mounting cavity relative to the stator assembly 43, the rotating mounting seat 441 has a first end close to the housing wind inlet 13 and a second end far away from the housing wind inlet 13, the wind guiding ring 442 is sleeved on the second end, the blades 443 all extend from an outer side surface of the rotating mounting seat 441 in a radial direction of the rotating mounting seat 441, the blades 443 are spaced apart from each other in a circumferential direction of the rotating mounting seat 441 and are located on a side of the wind guiding ring 442 close to the first end, wherein wind passing grooves are defined between every two of the blades 443, the wind passing grooves are the fan wind inlet 41 on the side close to the housing wind inlet 13, and the fan outlet 42 is located at an outer end of the blades 443, in the rotation process of the plurality of blades 443, the airflow enters the rotor blade disc 44 from the fan air inlet 41, and is blown out from the outer ends of the plurality of blades 443 under the guiding action of the air guiding ring 442, so that the installation height of the fan 4 can be reduced, and the heat dissipation of the fan 4 to the heat generating component 5 in the housing 1 is facilitated.
In order to facilitate the fixing of the plurality of blades 443, in an embodiment, the rotor blade disk 44 further includes a connection ring 444, the connection ring 444 is disposed on an end surface of the plurality of blades 443 near the end of the housing air inlet 13 and is located at an outer end of the plurality of blades 443, and the connection ring 444 functions to connect the plurality of blades 443, so that the overall structural strength is better, and the rotor blade disk 44 is more stable during the overall rotation.
In an embodiment, referring to fig. 12 to 13, the cross-section of the blade 443 is enlarged along the radial direction of the rotating mounting seat 441, so as to facilitate the guiding and diffusing of the airflow, in this embodiment, the surface of the wind guiding ring 442 may be curved to adapt to the shape of the blade 443, so that the wind guiding ring 442 and the plurality of blades 443 may be integrally formed for convenient manufacturing.
In another embodiment, the end surfaces of the plurality of blades 443, which are far away from the end of the casing air inlet 13, are arranged in parallel, and the air guiding ring 442 is detachably mounted on the plurality of blades 443, so that the mold opening of the injection mold is facilitated, and the manufacturing is facilitated.
In addition, at the outer ends of the plurality of blades, the width of the air passing grooves between the plurality of blades 443 is large, and at this time, the blades with a small length along the radial direction of the rotation mounting seat 441 are arranged at the outer ends of the plurality of blades, so that the air outlet effect which is uniform along the circumferential direction of the rotor blade disc 44 is satisfied.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (26)
1. A cooking appliance, comprising:
the mounting structure comprises a shell, a mounting cavity and a mounting base, wherein the shell is internally provided with an opening communicated with the mounting cavity, and the side wall provided with the opening is a mounting wall;
the circuit board is arranged in the mounting cavity and faces the mounting wall, and the projection of the circuit board on the mounting wall is staggered with the opening, so that a mounting area is formed between the projection of the circuit board and the opening on the inner side surface of the mounting wall; and the number of the first and second groups,
and the protective structure is formed on the inner side surface of the mounting wall, at least partially positioned in the mounting area and used for increasing the creepage distance from the opening to the circuit board.
2. The cooking appliance of claim 1, wherein said shield structure includes a first insulating shield rib projecting on an inner side of said mounting wall, at least a portion of said first insulating shield rib being located in said mounting region.
3. The cooking appliance according to claim 2, wherein the first insulating protection rib is spaced from the circuit board by a distance D in the extending direction of the circuit board1，D1Not less than 1.5 mm; and/or the presence of a gas in the gas,
in the extending direction of the circuit board, the distance between the first insulating protection rib and the circuit board is D1In the cooking utensil, the electric gap is D0And D is1＞D0。
4. The cooking utensil of claim 2 wherein the first insulating protective rib has a thickness t ≧ 1.2 mm.
5. The cooking appliance of claim 2 wherein said circuit board is spaced from an inner side of said mounting wall by a distance H1The height of the first insulating protection rib is H2And H is2＞H1。
6. The cooking appliance according to claim 5, wherein the first insulating rib is annularly arranged, and a projection of the circuit board on the mounting wall is located inside the first insulating rib.
7. The cooking appliance according to claim 2, wherein the first insulating rib is provided in plurality and is disposed gradually closer to the opening.
8. The cooking appliance of claim 3, wherein the minimum creepage distance allowed by the circuit board in the cooking appliance is L0；
The distance between the circuit board and the inner side surface of the mounting wall is H1The height of the first insulating protection rib is H2The thickness of the first insulating protection rib is t, and H1+H2+D1+t≥L0。
9. The cooking appliance according to claim 1, wherein a second insulating protection rib is further disposed on an inner side surface of the mounting wall, and the second insulating protection rib is disposed opposite to the circuit board for fixedly supporting the circuit board.
10. The cooking appliance according to claim 9, wherein the second insulating protection rib has a height H3And H is3≥3mm。
11. The cooking appliance according to claim 9, wherein the second insulating protection rib is annularly arranged and is opposite to the periphery of the circuit board.
12. The cooking appliance according to claim 1, wherein the housing further comprises a housing inlet and a housing outlet, and a heat exchange air duct is formed between the housing inlet and the housing outlet;
the cooking utensil is still including locating the fan of installation intracavity, the fan is in on the heat transfer wind channel, be used for with the outer air suction of casing air intake extremely the installation intracavity accomplish the heat exchange after, certainly the discharge of casing air outlet department.
13. The cooking appliance according to claim 12, wherein the circuit board is provided with a heat generating component, and the heat generating component is arranged in the heat exchange air duct.
14. The cooking appliance of claim 13, wherein the heat generating component is disposed adjacent to the fan and/or the housing outlet.
15. The cooking appliance of claim 14, wherein the heat generating component comprises one or more of an insulated gate bipolar transistor, a bridge stack, and a fuse.
16. The cooking appliance according to claim 13, wherein a flow guide rib plate is further arranged in the mounting cavity, the flow guide rib plate defines at least one flow guide groove with an open end along the periphery of the fan, and the open end of the flow guide groove faces the heating element so as to converge and guide the air blown out from the air outlet end of the fan to the heating element.
17. The cooking appliance of claim 16, wherein the housing inlet and the housing outlet are formed in a bottom of the housing;
the bottom surface of the shell is provided with an anti-backflow rib plate, and the anti-backflow rib plate is positioned on one side, close to the fan, of the shell air outlet and used for guiding the air blown out from the shell air outlet to the direction far away from the fan.
18. The cooking appliance of claim 17 wherein the bottom of said housing is provided with a plurality of support feet;
the height difference between the lower end face of the backflow-preventing rib plate and the lower end face of the supporting leg is d, and d is larger than or equal to 0.5mm and smaller than or equal to 1 mm.
19. The cooking appliance according to claim 12, wherein the fan is formed with a fan inlet at a bottom of the fan and a fan outlet at a peripheral side of the fan, and the fan inlet is disposed corresponding to the housing inlet.
20. The cooking appliance of claim 19, wherein said fan comprises:
the stator assembly is fixedly installed in the installation cavity; and the number of the first and second groups,
a rotor assembly including a rotor blade disc rotatably mounted within the mounting cavity relative to the stator assembly;
the fan air inlet and the fan air outlet are formed in the rotor blade disc.
21. The cooking appliance of claim 20, wherein said rotor blade disk comprises:
the rotary mounting seat is rotatably mounted in the mounting cavity relative to the stator assembly and is provided with a first end close to the shell air inlet and a second end far away from the shell air inlet;
the air guide ring is sleeved at the second end; and the number of the first and second groups,
the blades extend from the outer side surface of the rotating installation seat along the radial direction of the rotating installation seat, are distributed at intervals along the circumferential direction of the rotating installation seat and are positioned on one side, close to the first end, of the air guide ring;
the air inlet of the fan is arranged on one side of the air inlet close to the shell, and the fan air outlet is arranged at the outer end of each blade.
22. The cooking appliance according to claim 21 wherein said rotor blade disk further comprises a connecting ring disposed on an end surface of said plurality of blades adjacent to an end of said housing air inlet and at an outer end of said plurality of blades.
23. The cooking appliance of claim 21 wherein said blades have an increasing cross-section in a radial direction of said rotatable mount.
24. The cooking appliance of claim 23 wherein said wind-directing ring is integral with said plurality of blades.
25. The cooking appliance according to claim 21 wherein the end surfaces of the plurality of vanes distal from the air inlet of the housing are flush;
the wind guide ring is detachably mounted on the plurality of blades.
26. The cooking appliance of any one of claims 1 to 25, wherein the cooking appliance is an induction cooker or an infrared heating oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921495420.6U CN210688349U (en) | 2019-09-09 | 2019-09-09 | Cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921495420.6U CN210688349U (en) | 2019-09-09 | 2019-09-09 | Cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210688349U true CN210688349U (en) | 2020-06-05 |
Family
ID=70898859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921495420.6U Active CN210688349U (en) | 2019-09-09 | 2019-09-09 | Cooking utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210688349U (en) |
-
2019
- 2019-09-09 CN CN201921495420.6U patent/CN210688349U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8760017B2 (en) | Electric machine | |
| JP4662608B2 (en) | Fan motor with integrated axial fan and motor | |
| CN110179324B (en) | Cooking device | |
| CN110219828B (en) | Volute of centrifugal fan, centrifugal fan and electrical apparatus | |
| EP1220573A2 (en) | Structure of ventilation motor assembly in microwave oven | |
| CN210688349U (en) | Cooking utensil | |
| CN105546815B (en) | Warm-air drier | |
| JP5667316B1 (en) | Electromagnetic cooker | |
| CN205747031U (en) | Hot blast assembly and microwave oven | |
| WO2022063309A1 (en) | Cooling fan, bottom plate assembly, and cooking utensil | |
| CN215723408U (en) | Cooking utensil | |
| CN216293808U (en) | Air fryer with low surface temperature rise | |
| JP5482727B2 (en) | Heat pump outdoor unit | |
| CN215777493U (en) | Heating device and cooking utensil with same | |
| CN215016378U (en) | Cooking utensil | |
| CN110894960A (en) | Cooking appliance with microwave heating function | |
| CN112524061A (en) | Air supply device and electromechanical device | |
| CN220917127U (en) | Cooking utensil | |
| CN218721721U (en) | Electromagnetic oven | |
| CN219166206U (en) | Air fryer | |
| CN219109224U (en) | Hot air assembly and cooking utensil | |
| CN218870096U (en) | Air duct structure and air fryer | |
| CN218788895U (en) | Electric heating furnace | |
| CN215650492U (en) | Wind-guiding heat abstractor and cooking utensil | |
| CN212996006U (en) | Bottom shell assembly of cooking utensil and cooking utensil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |