CN212511293U

CN212511293U - Electromagnetic oven

Info

Publication number: CN212511293U
Application number: CN202020573351.2U
Authority: CN
Inventors: 宋勇
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-02-09
Anticipated expiration: 2030-04-16

Abstract

The utility model provides an induction cooker, including drain pan (10) upper cover (20) and panel, drain pan (10), upper cover (20) and panel enclose into the holding chamber jointly, be provided with cooling fan (40) and circuit board (30) in the holding chamber, set up fresh air inlet (12) on drain pan (10), it is provided with the deep bead to be close to fresh air inlet (12) one side in the holding chamber, deep bead and drain pan (10), upper cover (20) and panel are the components of a whole that can function independently setting, the clearance has between diapire (11) of deep bead and drain pan (10), the clearance forms the at least partial air intake of cooling fan (40). The utility model discloses can effectively reduce the manufacturing degree of difficulty of electromagnetism stove, improve cooling fan's intake to optimize the heat dissipation cooling effect of electromagnetism stove.

Description

Electromagnetic oven

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an induction cooker.

Background

The electromagnetic oven has the advantages of quick heating, no open fire, no smoke, safety, convenience and the like, and is more and more favored and accepted by consumers.

The electromagnetism stove includes the drain pan, covers the panel of establishing on the drain pan and is located the upper cover between drain pan and the panel, and the three encloses into the holding chamber of electromagnetism stove jointly, generally is provided with heating element and cooling fan in the holding chamber, and heating element generally includes coil panel and circuit board. An air inlet hole and an air outlet hole are formed in the bottom shell, and the accommodating cavity is communicated with the outside. When the induction cooker works, the low-temperature air flow outside the holding cavity is introduced into the holding cavity through the air inlet hole by the heat dissipation fan, the low-temperature heat dissipation air flow flows to the positions of the circuit board and the coil panel after passing through the heat dissipation fan, carries heat around the circuit board and the coil panel, then flows to the air outlet hole, flows to the outside of the holding cavity through the air outlet hole, carries the heat in the holding cavity to the outside, and achieves heat dissipation and cooling of the induction cooker. The periphery of the heat dissipation fan is generally provided with an air deflector, the air deflector is provided with an air inlet of the heat dissipation fan, and heat dissipation air flow entering from the air inlet hole reaches the heat dissipation fan through the air inlet.

However, the air deflectors around the cooling fan in the existing electromagnetic oven are arranged on the bottom shell of the electromagnetic oven, so that the structure of a manufacturing mold of the bottom shell is complex, the structure and the size of the air inlet are limited, the manufacturing difficulty of the electromagnetic oven is increased, the air inlet amount of the cooling fan is reduced, and the cooling effect of the electromagnetic oven is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one problem mentioned in the background art, the utility model provides an electromagnetic oven can effectively reduce the manufacturing degree of difficulty of electromagnetic oven, has improved cooling fan's intake to optimize the heat dissipation cooling effect of electromagnetic oven, guarantee the stability and the high efficiency of electromagnetic oven work, prolong the life of electromagnetic oven.

In order to realize the above object, the utility model provides an induction cooker, including the drain pan, set up the panel of covering on the drain pan with the lid, the drain pan, upper cover and panel enclose into the holding chamber jointly, are provided with cooling fan and circuit board in the holding chamber, set up the fresh air inlet on the drain pan, are close to fresh air inlet one side in the holding chamber and are provided with the deep bead, and the deep bead is the components of a whole that can function independently setting with drain pan, upper cover and panel, has the clearance between the diapire of deep bead and drain pan, and this clearance forms cooling fan's at least partial air intake.

In the above electromagnetic oven, optionally, at least a part of the circuit board extends to at least a part of the outer periphery of the heat radiating fan and forms an extension portion which forms the above wind deflector.

A first gap is formed between the extending part and the bottom wall of the bottom shell, and the first gap forms at least part of an air inlet of the heat dissipation fan.

The utility model provides an induction cooker, at least part periphery and formation extension through extending to the radiator fan with the at least part of circuit board, utilize the first clearance that forms between the diapire of this extension and drain pan as radiator fan's at least partial air intake, compare and set up the air intake structure in the drain pan in prior art, the structure based on the drain pan is comparatively complicated, the structure complexity of the mould that uses in the manufacturing process has been increased, the mould of structure complexity has restricted the structure and the size of air intake, influence radiator fan's intake. However, the extension part of the application is positioned on the circuit board, the circuit board structure and the bottom shell are mutually independent, so that the mold manufacturing process is not influenced by the bottom shell structure, and the manufacturing difficulty of the air inlet structure of the cooling fan is greatly reduced. And the structure and the size of the air inlet formed by the extension part can be adjusted according to the structure of the cooling fan, so that the formed air inlet structure is flexible, the air inlet amount of the cooling fan is increased, the cooling effect of the cooling fan is enhanced, the working stability and the working efficiency of the induction cooker are ensured, and the service life of the induction cooker is prolonged.

In the above electromagnetic oven, optionally, the air inlet is disposed on a side wall of the bottom casing, the side wall of the bottom casing at least includes a first side wall section, a second side wall section, a third side wall section and a fourth side wall section which are connected in sequence, and the heat dissipation fan is disposed in the accommodating cavity near a connection of the first side wall section and the second side wall section.

The air inlet openings are provided in at least part of the first side wall section and/or at least part of the second side wall section.

The arrangement can ensure that the air inlet hole is close to the heat dissipation fan as much as possible, the air inlet flow of the air inlet hole is facilitated to flow to the heat dissipation fan, and the flow path of the air inlet flow in the accommodating cavity is reduced, so that the air inlet amount of the heat dissipation fan is increased, and the heat dissipation effect on the heating element in the electromagnetic oven is enhanced.

In the above electromagnetic oven, optionally, a side of the extension portion close to the heat dissipation fan has a first edge.

The first edge is arc-shaped, the first edge surrounds at least part of the periphery of the heat radiation fan, and the arc-shaped first edge and the circle center of the heat radiation fan are concentrically arranged.

And/or the area of the first edge surrounding the outer perimeter of the heat rejection fan is at least 1/3 of the entire outer perimeter of the heat rejection fan.

And/or the first edge has a central angle in the range of 50-150.

The first edge of the extension portion is arc-shaped, so that a surrounding structure is formed for the cooling fan, air inlet flow is gathered to the cooling fan, and the air inlet amount of the cooling fan is increased.

In the above electromagnetic oven, optionally, an upper surface of the first edge is higher than an upper surface of the heat dissipation fan, and a lower surface of the first edge is located between the upper surface and the lower surface of the heat dissipation fan.

According to the arrangement, the air inlet air flow between the lower surface of the heat dissipation fan and the bottom wall of the bottom shell can enter the heat dissipation fan as far as possible, and meanwhile, the air outlet air flow on the upper surface of the heat dissipation fan can flow to the position of the heating element as far as possible, so that the heat dissipation effect of the heating element is optimized.

And/or the distance between the lower surface of the first edge and the upper surface of the heat dissipation fan is 30-60% of the thickness of the heat dissipation fan.

And/or the upper surface of the extension extends to the lower surface of the panel. The arrangement can avoid the leakage of the air outlet flow of the heat dissipation fan and ensure the heat dissipation effect of the air outlet flow on the heating element.

And/or the lower surface of the extension part is a plane, a bevel or a cambered surface. The arrangement can ensure the smoothness of the flowing of the air inlet flow, thereby optimizing the air inlet process of the heat radiation fan.

In the above described electromagnetic oven, the thickness of the first edge may optionally be in the range of 10-25 mm.

And/or the first edge is provided with a first flanging, the end part of the first flanging extends towards one side of the panel, and the height range of the first flanging is 10-25 mm.

In the above electromagnetic oven, optionally, a side of the extension portion away from the heat dissipation fan has a second edge, and the second edge is disposed near the second sidewall section.

And/or the second edge is linear.

And/or the second edge is provided with a second flange, the end of which extends towards the panel.

The second edge of the extension portion is set to be a straight line, the second edge is favorably attached to the second side wall section, and the second flanging on the second edge can protect the circuit board.

In the above-described induction cooker, the circuit board may optionally include a circuit board support and a circuit board body disposed above the circuit board support, the circuit board support being located between at least a portion of the circuit board body and at least a portion of the air inlet opening.

At least part of the circuit board support extends to at least part of the periphery of the heat radiating fan and forms an extension part.

The circuit board support is used for supporting, installing and protecting the circuit board body, and the circuit board support is used for guiding the air inlet flow of the heat dissipation fan.

And/or the circuit board bracket is a plastic part.

And/or the lower surface of the circuit board support is a plane, an inclined plane or an arc surface.

And/or at least one reinforcing rib is arranged on the circuit board bracket.

The arrangement can improve the smoothness of the air current flowing through the circuit board support and increase the mechanical strength of the circuit board support.

In the above electromagnetic oven, the air inlet holes may be provided on the bottom wall and/or the side wall of the bottom case.

And/or the heat radiation fan is an axial flow fan.

And/or the cooling fan comprises a fan support and a fan body arranged on the fan support, and the fan support is positioned at the bottom of the fan body.

Such setting can reduce radiator fan's manufacturing cost, avoids radiator fan to inhale outside steam and spot simultaneously in the course of the work, guarantees the cleanliness in the holding chamber and the stability of electronic component work. The fan support of the heat dissipation fan is arranged at the bottom of the fan body, so that the fan support is prevented from blocking the air outlet flow of the heat dissipation fan, and the air outlet flow is guaranteed to the heating element.

In the above electromagnetic oven, optionally, the panel includes an operation area and a heating area, and the air inlet hole is disposed on a side of the bottom case close to the operation area.

And/or the air inlet hole is arranged on the bottom wall of the bottom shell and is positioned outside the projection area of the heat radiation fan on the bottom wall of the bottom shell.

Through setting up the fresh air inlet outside the projection area of radiator fan at the drain pan diapire, avoid near diapire the air current direct entering holding chamber to bring steam or the spot of electromagnetism stove bottom into, guaranteed the cleanliness in the holding chamber, and improved electronic component job stabilization nature.

In the foregoing electromagnetic oven, optionally, a first air deflector is disposed in the accommodating cavity near the first side wall section, a first end of the first air deflector is connected to the fourth side wall section, and a second end of the first air deflector extends toward the heat dissipation fan.

In the above electromagnetic oven, optionally, the air inlet hole is provided on the entire first side wall section, and the circuit board support is provided at the bottom of the entire circuit board body between the circuit board body and the air inlet hole.

Such setting can increase the quantity of the fresh air inlet on the first side wall section to increase the air flow of air inlet, the circuit board support is located the bottom of whole circuit board body and can improves the protection effect to the circuit board body.

Or the air inlet hole is arranged on at least part of the first side wall section, a fourth air deflector is arranged between the first air deflector and the first side wall section, the first end of the fourth air deflector is connected to the first side wall section, and the second end of the fourth air deflector is connected to one end, close to the first air deflector, of the first air deflector or the extension part; the first air deflector, the fourth air deflector, part of the first side wall section and part of the fourth side wall section jointly enclose a cavity.

The fresh air inlet sets up the one side that is close to cooling blower on first lateral wall section, and is located the outside of cavity, and the circuit board support sets up the bottom that is close to cooling blower's one side at the circuit board body, and is located between circuit board body and the fresh air inlet.

Through setting up the fresh air inlet on first side wall section one side that is close to radiator fan and be located the outside of cavity, guarantee that the air inlet stream can flow to radiator fan department as early as possible, reduced the route of flowing through of air inlet stream in the holding chamber, reduce the loss volume of air inlet stream.

In the foregoing electromagnetic oven, optionally, a second air deflector is disposed in the accommodating cavity on a side close to the second side wall section, a first end of the second air deflector is located on a side close to the heat dissipation fan, and a second end of the second air deflector extends toward the third side wall section.

In the above electromagnetic oven, optionally, the second end of the second air deflector is connected to a side of the second side wall section away from the heat dissipation fan; or, the second end of the second air deflection plate is connected to the third sidewall section; alternatively, the second end of the second air deflection plate is connected at the connection of the second and third sidewall sections.

In the above electromagnetic oven, the air inlet holes may be provided on the entire second side wall section. Such an arrangement may increase the number of air inlet openings in the second side wall section, thereby increasing the air flow of the inlet air.

In the above electromagnetic oven, optionally, the air inlet hole is disposed on at least a portion of the second side wall section, a third air guiding plate is further disposed in the accommodating cavity, a first end of the third air guiding plate extends toward the second side wall section, and a second end of the third air guiding plate extends toward the first end of the second air guiding plate.

And/or the air inlet hole is arranged on one side, close to the heat dissipation fan, of the second side wall section.

And/or the air outlet hole in the bottom shell is arranged on one side, far away from the heat radiation fan, of the second side wall section.

Through setting up the fresh air inlet on the second lateral wall section one side that is close to radiator fan, guarantee that the air inlet stream can flow to radiator fan department as early as possible, reduced the route of flowing through of air inlet stream in the holding chamber, reduced the loss volume of air inlet stream. Meanwhile, the second air deflector and the third air deflector are utilized to guide the inlet air flow.

In the above electromagnetic oven, optionally, the first end of the third air deflection plate is connected to the second side wall section.

And/or the second end of the third air deflector is connected to the first end of the second air deflector.

And/or the third air deflector is connected to one end of the extension part far away from the circuit board body. The arrangement can improve the mounting flexibility of the third air deflector and reduce the assembly difficulty of the induction cooker.

In the above electromagnetic oven, optionally, a second gap is formed between the lower surface of the heat dissipation fan and the bottom wall of the bottom casing, and the second gap is communicated with the air inlet and forms an air inlet portion of a fan cavity of the heat dissipation fan.

And a third gap is formed between the upper surface of the heat radiation fan and the panel, and the third gap is communicated with the air outlet hole of the bottom shell and forms an air outlet part of a fan cavity of the heat radiation fan. The arrangement can enable the cooling fan to form a bottom air inlet and top air outlet airflow flowing mode, and the guiding effect of the cooling fan on airflow is improved.

In the above electromagnetic oven, optionally, a fourth gap is formed between the circuit board support and the side wall of the bottom shell, and at least a part of the circuit board support is provided with a third flange at an end close to the side wall of the bottom shell, and an end of the third flange extends toward the panel.

The height range of the third flanging is 10-25 mm.

Through set up the fourth clearance in the lateral wall support of circuit board support and drain pan, utilize the third turn-ups to play the guard action to the circuit board body to the air current that gets into to the fresh air inlet on the drain pan lateral wall plays the guide action.

In the above electromagnetic oven, optionally, the first air deflector and the second air deflector are disposed in the accommodating cavity at an interval, the extending portion is located in the interval area, and two ends of the extending portion are respectively abutted to the first air deflector and the second air deflector.

And/or the end part of the extension part is overlapped and abutted with at least part of the first air deflector.

And/or the end part of the extension part is overlapped and abutted with at least part of the second air deflector.

Through the both ends with the extension respectively with first aviation baffle and second aviation baffle butt, and/or overlap the butt, can improve the stability that sets up of extension in the drain pan, avoid the air current to leak outward simultaneously, reduce the loss volume of air current.

In the above electromagnetic oven, optionally, a first transition piece is disposed between the first air deflector and the extension portion, and the first air deflector and the extension portion are abutted by the first transition piece.

The first transition piece is connected to the bottom wall of the bottom shell, and/or the first transition piece is connected to the first air deflector, and/or the first transition piece is connected to one side of the extension portion, which is close to the first air deflector.

And/or a second transition piece is arranged between the second air deflector and the extension part, and the second air deflector and the extension part are abutted through the second transition piece.

The second transition piece is connected to the bottom wall of the bottom shell, and/or the second transition piece is connected to the second air deflector, and/or the second transition piece is connected to one side, close to the second air deflector, of the extension portion.

The first transition piece is used for connecting the first air guide plate and the extension portion, the second transition piece is used for connecting the second air guide plate and the extension portion, the connection difficulty between the extension portion and the first air guide plate and between the extension portion and the second air guide plate can be reduced, and therefore the assembly difficulty of the induction cooker is reduced.

In the above electromagnetic oven, optionally, a first air inlet area of the heat dissipation fan is formed between the first air deflector and at least part of the first side wall section, and at least part of the circuit board is located in the first air inlet area.

And a second air inlet area of the heat dissipation fan is formed between the second air deflector and at least part of the second side wall section.

The first air inlet area and the second air inlet area are communicated with an air inlet part of a fan cavity of the heat dissipation fan.

The arrangement facilitates the air flow in the first air inlet area and the second air inlet area to the heat dissipation fan, and meanwhile, the heat dissipation and cooling effects of the air inlet flow in the first air inlet area on the circuit board in the first air inlet area are achieved.

In the above electromagnetic oven, the circuit board may be disposed in the accommodating chamber through the connecting member.

The connecting assembly comprises at least one fixing column arranged in the bottom shell and at least one fixing hole arranged on the circuit board, when the circuit board is arranged in the bottom shell, the fixing columns penetrate through the fixing holes in a one-to-one correspondence mode, and at least part of the fixing holes are located at the end portion of the extending portion.

And/or, the connecting assembly comprises at least one connecting piece arranged on the circuit board body, and when the circuit board is arranged in the bottom shell, the connecting piece is connected to the bottom shell.

Through setting up fixed column and fixed orifices, utilize the fixed column to wear to establish the fixed orifices to play the effect of location installation to the circuit board, can play fixed mounting's effect to the circuit board through setting up the connecting piece.

In the above electromagnetic oven, optionally, a supporting assembly for supporting the circuit board is disposed on the bottom case, and the supporting assembly includes one or more of the following components:

the first supporting rib is arranged on the surface, close to the first side wall section, of the first air deflector;

the second supporting rib is arranged on the surface of the first side wall section, which is close to one side of the first air deflector;

at least one third brace rod, the third brace rod sets up on the periphery wall of fixed column.

Through set up foretell brace rod in the drain pan, can improve the installation stability of circuit board, reduce the degree of difficulty of installation simultaneously.

In the above electromagnetic oven, optionally, a distance between the upper surface of the extension portion and the lower surface of the panel is in a range of 0.5 to 1 mm.

In the above electromagnetic oven, the circuit board may be a lamp panel and/or a power panel.

In the electromagnetic oven, optionally, an upper cover is arranged between the bottom shell and the panel, a first wind blocking rib is arranged on one side of the upper cover close to the heat dissipation fan, and a second wind blocking rib is arranged on one side of the bottom shell close to the heat dissipation fan; first fender wind muscle and second fender wind muscle all set up around radiator fan.

A fifth gap is formed between the first wind blocking rib and the bottom wall of the bottom shell, a sixth gap is formed between the second wind blocking rib and the bottom wall of the bottom shell, and the first gap, the fifth gap and the sixth gap jointly form an air inlet of the heat radiating fan.

The arrangement can improve the flexibility of the wind blocking rib at the air inlet, thereby reducing the complexity of the assembly of the induction cooker and simultaneously improving the air inlet volume of the heat radiation fan.

The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of an accommodating chamber of an induction cooker according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of an accommodating cavity of an induction cooker with a circuit board body taken out according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of an accommodating cavity of an induction cooker with a circuit board taken out according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of the accommodating cavity of the induction cooker with the circuit board taken out according to the first embodiment of the present invention;

fig. 5 is a schematic structural view of a third flanging side of a circuit board support of an induction cooker according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a first flanging side of a circuit board support of an induction cooker according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of a lower surface side of a circuit board support of an induction cooker according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of the accommodating cavity of the induction cooker with the circuit board body taken out according to the second embodiment of the present invention;

fig. 9 is a schematic structural view of the accommodating cavity of the induction cooker with the circuit board taken out according to the second embodiment of the present invention;

fig. 10 is a schematic structural view of a third flanging side of a circuit board support of an induction cooker according to a second embodiment of the present invention;

fig. 11 is a schematic structural view of a first flanging side of a circuit board support of an induction cooker according to a second embodiment of the present invention;

fig. 12 is a schematic structural view of a lower surface side of a circuit board support of an induction cooker according to an embodiment of the present invention.

Description of reference numerals:

10-a bottom shell; 11-a bottom wall; 12-air inlet holes; 13-air outlet holes; 14-a first sidewall segment;

141-a first air deflector; 15-a second sidewall segment; 151-a second air deflector; 16-a third sidewall segment;

17-a fourth sidewall segment; 18-a third air deflection plate; 19-a fourth air deflection plate; 20-covering the upper cover; 30-a circuit board;

31-a circuit board holder; 311-third flanging; 312-reinforcing ribs; 32-a circuit board body; 33-an extension;

331-a first edge; 332-a first cuff; 333-a second edge; 334-second flanging;

335-a first transition piece; 336-a second transition piece; 40-a heat dissipation fan; 41-a fan bracket;

42-a fan body; 50-a connecting assembly; 51-a fixation hole; 52-fixed column; 53-a connector;

60-a support assembly; 61-a first support rib; 62-a second support rib; 63-third support ribs;

70-a coil disc; 80-a cavity; 90-power panel.

Detailed Description

The utility model discloses an applicant discovers at the actual research in-process, and the aviation baffle around the cooling fan in present electromagnetism stove all sets up on the drain pan, still need set up other structures and electronic component based on the drain pan, and consequently installation space is limited, leads to the structure of aviation baffle to need adapt to the installation space in the drain pan, can't adjust according to cooling fan's structure, has reduced the flexibility of aviation baffle structure. Simultaneously, the required mould structure of aviation baffle in the forming process on the drain pan is also comparatively complicated relatively, need accomplish the shaping of air inlet on the aviation baffle simultaneously based on the aviation baffle in the forming process, the shaping of air inlet is mainly accomplished through the oblique top structure on the drain pan mould, the size of oblique top structure is great, and it is relatively poor at the holistic connection stability of drain pan mould, consequently influence the size of air inlet after the shaping, the design that leads to cooling fan's inlet air channel has great limitation, cooling fan's intake has been reduced, thereby influence the heat dissipation cooling effect of electromagnetism stove. Further, the installation of other structural members and electronic components on the bottom shell needs to avoid an installation space for the die pitched roof structure, and normal installation of other structural members and electronic components in the electromagnetic oven is also affected. Therefore, the assembly complexity of the induction cooker is increased, and the manufacturing efficiency of the induction cooker is reduced.

In view of this, the embodiment of the present invention provides a through at least part periphery that extends the circuit board to the radiator fan and form the extension, utilize the first clearance that forms between the diapire of this extension and drain pan as radiator fan's at least partial air intake, compare and set up the air intake structure in the drain pan in prior art, the extension of this application is located the circuit board, circuit board structure and drain pan structure mutual independence, and the installation space of circuit board structure is comparatively abundant, therefore the mould manufacturing process does not receive the influence of drain pan structure, the manufacturing degree of difficulty of radiator fan air intake structure has been reduced greatly, the while has been avoided producing the influence to structure and electronic component's on the drain pan installation. And the structure and the size of the air inlet formed by the extension part can be adjusted according to the structure of the cooling fan, the formed air inlet structure is flexible, the air inlet amount of the cooling fan is increased, the cooling effect of the cooling fan is enhanced, the working stability and the working efficiency of the induction cooker are ensured, and the service life of the induction cooker is prolonged.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

Example one

Fig. 1 is a schematic structural view of an accommodating chamber of an induction cooker according to an embodiment of the present invention. Fig. 2 is a schematic structural view of an accommodating cavity of an induction cooker with a circuit board body taken out according to an embodiment of the present invention. Fig. 3 is a schematic structural view of an accommodating cavity of an induction cooker with a circuit board taken out according to an embodiment of the present invention. Fig. 4 is a schematic structural view of an accommodating cavity of an induction cooker with a circuit board taken out according to an embodiment of the present invention. Fig. 5 is a schematic structural view of a third flanging side of a circuit board support of an induction cooker according to an embodiment of the present invention. Fig. 6 is a schematic structural view of a first flanging side of a circuit board support of an induction cooker according to an embodiment of the present invention. Fig. 7 is a schematic structural view of a lower surface side of a circuit board support of an induction cooker according to an embodiment of the present invention.

Referring to fig. 1 to 7, a first embodiment of the present invention provides an induction cooker, which includes a bottom case 10, an upper cover 20 disposed on the bottom case 10, and a panel covered on the bottom case 10, wherein the bottom case 10, the upper cover 20, and the panel jointly enclose an accommodating chamber, a heat dissipation fan 40 and a circuit board 30 are disposed in the accommodating chamber, and an air inlet 12 is disposed on the bottom case 10. A wind shield is arranged on one side of the accommodating cavity close to the air inlet 12, the wind shield, the bottom shell 10, the upper cover 20 and the panel are arranged in a split mode, a gap is formed between the wind shield and the bottom wall 11 of the bottom shell 10, and at least part of air inlets of the heat dissipation fan 40 are formed in the gap.

Specifically, at least a portion of the circuit board 30 extends to at least a portion of the periphery of the heat sink 40 and forms an extension 33, and the extension 33 forms the wind guard.

The extending portion 33 and the bottom wall 11 of the bottom case 10 have a first gap therebetween, and the first gap forms at least a part of an air inlet of the heat dissipation fan 40.

It should be noted that the panel cover provided in this embodiment is disposed on the bottom case 10, and defines an accommodating cavity together with the bottom case 10 for disposing various structural members and electronic components. The electromagnetic oven may be a square structure as shown in the figure, or may be an existing circular or other shape electromagnetic oven, which is not limited in this embodiment. The accommodating cavity is provided with electronic elements such as the circuit board 30, the coil panel 70 and the heat dissipation fan 40, and the circuit board 30 and the coil panel 70 generate heat in the working process, so that the circuit board and the coil panel belong to heating elements in the accommodating cavity. The bottom shell 10 is provided with an air inlet 12, and the heat dissipation fan 40 generates negative pressure in the accommodating chamber when working, so as to guide low-temperature air flow outside the accommodating chamber to enter the accommodating chamber through the air inlet 12 and form inlet air flow. Meanwhile, the heat dissipation fan 40 can further guide the air inlet airflow to the position of the heating element, the heat around the heating element is taken away by the low-temperature air inlet airflow, a high-temperature air outlet airflow is formed, the heat dissipation fan 40 drives the air outlet airflow to flow out of the accommodating cavity through the air outlet hole 13 in the bottom shell 10, and therefore the purpose of heat dissipation and cooling of the electronic element in the accommodating cavity is achieved.

In the embodiment, at least a portion of the circuit board 30 extends to at least a portion of the periphery of the heat dissipation fan 40, the extended area is an extended portion 33 of the circuit board 30, and an air inlet of the heat dissipation fan 40 is formed by utilizing a first gap between the extended portion 33 and the bottom wall 11 of the bottom case 10. Because the circuit board 30, the bottom case 10 and the panel are independent structures, the structure of the circuit board 30 is not affected by the structure of the bottom case 10 and the panel, the installation space on the circuit board 30 is more abundant, the structure of the extension portion 33 can be adjusted according to the structure of the heat dissipation fan 40, the extension portion 33 is located at least part of the periphery of the heat dissipation fan 40, the air flow entering the heat dissipation fan 40 is guided, the air flow is ensured to flow to the heat dissipation fan 40 as much as possible, and the loss of the air flow is reduced.

Further, the structure of the circuit board 30 is relatively simple compared to the structure of the bottom chassis 10, and when the circuit board 30 is manufactured by injection molding, the complexity of the mold structure can be greatly reduced. And because the air inlet is formed through the first gap, an inclined top structure similar to that on the bottom shell 10 die does not need to be arranged on the die, the stability of the die structure is improved, and the influence on the structure and the size of the air inlet is avoided.

It should be noted that, in practical use, the shape and size of the first gap may be set according to the setting height of the heat dissipation fan 40, the installation space in the accommodation cavity, and the like, which is not limited in this embodiment. This can effectively improve the structural flexibility of the air inlet, thereby adapting to the structure of the heat dissipation fan 40.

It should be particularly noted that the bottom wall 11 of the bottom shell 10 in the present embodiment may be a wall surface of the bottom shell 10 near the bottom, or may be a wall surface of the bottom shell and other structural members disposed on the wall surface, for example, in order to prevent the magnetic field generated by the coil panel 70 from acting on a magnetically conductive material prevention table surface on which the induction cooker is placed, an aluminum plate for the magnetic isolation member is typically disposed on the bottom wall 11, and the aluminum plate should also be included in the protection scope of the bottom wall 11 of the bottom shell 10 in the present application.

Specifically, the panel provided by the present embodiment may include an operation area and a heating area, wherein the heating area may be located directly above the coil panel 70, so as to facilitate a pot on which the magnetic field generated by the coil panel 70 acts. The operation area can be positioned on one side of the whole structure of the induction cooker, which is close to the operation area, so that a user can conveniently input a control instruction in the operation area and acquire the working state of the induction cooker.

As an implementable embodiment, the air inlet hole 12 is provided on the bottom case 10 on a side close to the operation area. Generally place in the district of heating top based on the pan, consequently the hot water juice in the pan spills over the back and mainly remains on the mesa of placing of the district of heating below, consequently set up fresh air inlet 12 on the drain pan 10 that is close to operation zone one side, can make fresh air inlet 12 keep away from the retention area who spills over hot water juice, thereby avoid fresh air inlet 12 to carry steam or spot on the mesa of placing and get into the holding chamber at the air inlet in-process, the cleanliness in the holding chamber has not only been improved, promote user experience comfort level, and guaranteed the stability of various electronic component work in the holding chamber.

Specifically, the air inlet holes 12 are formed in the bottom wall 11 and/or the side wall of the bottom case 10. The heat dissipation fan 40 may include a fan support 41 and a fan body 42 disposed on the fan support 41, and the fan support 41 is located at the bottom of the fan body 42.

It should be noted that the heat dissipation fan 40 may be an axial flow fan, and the fan commonly used in the electromagnetic oven at present includes an axial flow fan and a centrifugal fan, and the reason that the axial flow fan is selected in this embodiment is that: the structure of the centrifugal machine generally comprises a housing, a fan bracket 41 arranged in the housing and a fan body 42 arranged on the fan bracket 41. The axial flow fan only comprises the fan bracket 41 and the fan body 42, so the structure is simpler than that of a centrifugal fan and the cost is lower. And this embodiment sets up axial fan's fan support 41 in the bottom of fan body 42, can avoid the air-out wind flow at axial fan top to receive stopping of fan support 41 like this to the unobstructed nature of flow of air-out wind flow has been improved.

As an achievable embodiment, the air inlet holes 12 are provided on the bottom wall 11 of the bottom case 10, and the air inlet holes 12 are located outside the projection area of the heat dissipation fan 40 on the bottom wall 11 of the bottom case 10.

It should be noted that, in the present embodiment, the air inlet hole 12 is disposed on the bottom wall 11 of the bottom case 10, which is convenient for the axial flow fan to form a bottom air inlet mode, however, in the process of bottom air inlet, the air inlet flow can carry water vapor or dirt at the bottom of the induction cooker to enter the accommodating cavity, and in order to avoid this situation, the air inlet hole 12 is disposed at a portion of the bottom wall 11 of the bottom case 10, which is outside the projection area of the heat dissipation fan 40, so that in the process of entering the accommodating cavity, the air inlet flow can pass through a curved path, thereby increasing the length of the flow path to reduce the water vapor or dirt entering the accommodating cavity, ensuring the cleanliness in the accommodating cavity, and improving the working stability of the electronic component.

As another realizable embodiment, the air inlet opening 12 is disposed on a side wall of the bottom case 10, the side wall of the bottom case 10 at least comprises a first side wall section 14, a second side wall section 15, a third side wall section 16 and a fourth side wall section 17 which are connected in sequence, and the heat dissipation fan 40 is disposed in the accommodating cavity near a connection of the first side wall section 14 and the second side wall section 15.

The air inlet openings 12 are provided in at least part of the first side wall section 14 and/or at least part of the second side wall section 15.

It should be noted that, in the embodiment, the induction cooker is illustrated and drawn by taking a square as an example, and includes the four side wall sections connected in sequence, and adjacent side wall sections may be transited through an arc structure. The heat dissipation fan 40 is arranged at the joint of the first side wall section 14 and the second side wall section 15, namely, the corner region in the whole accommodating cavity, so that the air outlet airflow flowing out of the heat dissipation fan 40 can be ensured to cover the whole accommodating cavity as much as possible, and heat dissipation of a plurality of heating elements in the accommodating cavity is facilitated. The air inlet holes 12 are arranged on at least part of the first side wall section 14 and/or at least part of the second side wall section 15, so that the air inlet holes 12 can be ensured to be close to the heat dissipation fan 40 as much as possible, the length of the flowing path of the inlet air entering the air inlet holes 12 to the heat dissipation fan 40 is reduced, the loss of the inlet air in the flowing process is reduced, and the inlet air of the air inlet holes 12 can flow to the heat dissipation fan 40 more quickly, so that the air inlet amount of the heat dissipation fan 40 is increased, the heat dissipation effect of the heating element in the electromagnetic oven is enhanced, and the heat dissipation efficiency of the heating element is improved.

Specifically, as shown in fig. 5 to 7, a side of the extension 33 close to the heat dissipation fan 40 has a first edge 331. The first edge 331 has an arc shape, and the first edge 331 surrounds at least a part of the outer circumference of the heat dissipation fan 40. The arc-shaped first edge 331 is concentrically disposed with the center of the heat dissipation fan 40. The arc-shaped first edge 331 can effectively adapt to the arc-shaped periphery of the heat dissipation fan 40, thereby ensuring that the first edge 331 is attached to the periphery of the heat dissipation fan 40 and forms a surrounding state for the same. The first edge 331 and the curvature of the arc periphery of the heat dissipation fan 40 are adapted to each other, so that the fitting degree of the first edge 331 and the arc periphery of the heat dissipation fan 40 can be improved, the effect of gathering the inlet airflow by the extension portion 33 is ensured, the loss of the inlet airflow at the periphery of the heat dissipation fan 40 is reduced, and the air volume of the inlet airflow entering the heat dissipation fan 40 is improved. In practical applications, the curvatures of the first edge 331 and the circular arc-shaped outer circumference of the heat dissipation fan 40 may be set as needed, which is not limited in this embodiment.

As an achievable embodiment, the area of the first edge 331 surrounding the outer circumference of the radiator fan 40 occupies at least 1/3 of the entire outer circumference of the radiator fan 40. The central angle of the first edge 331 may range from 50 to 150. Based on the effect of the first edge 331 on gathering the intake air flow, if the area surrounding the outer periphery of the heat dissipation fan 40 by the first edge 331 is too small, or the central angle of the first edge 331 is too small, the area where the first edge 331 gathers is too small, and it is not guaranteed to reduce the loss of the intake air flow on the outer periphery of the heat dissipation fan 40. In practical applications, the specific percentage of the area of the first edge 331 surrounding the outer circumference of the heat dissipation fan 40 at least over the entire outer circumference of the heat dissipation fan 40 and the specific value of the central angle of the first edge 331 may be selected within the above range according to needs, and the specific percentage and the specific value of the central angle are not limited in this embodiment.

Specifically, the upper surface of the first edge 331 is higher than the upper surface of the heat dissipation fan 40, and the lower surface of the first edge 331 is located between the upper surface and the lower surface of the heat dissipation fan 40.

It should be noted that, since the first edge 331 surrounds at least a part of the outer periphery of the heat dissipation fan 40, the first edge 331 has a guiding effect on the wind flow at the outer periphery of the heat dissipation fan 40. In the process that the air flow passes through the heat dissipation fan 40, the inlet air flow contacts the fan body 42 of the heat dissipation fan 40 through the lower surface of the heat dissipation fan 40 and flows out through the upper surface of the heat dissipation fan 40 to form an outlet air flow, so that the lower surface of the first edge 331 is positioned between the upper surface and the lower surface of the heat dissipation fan 40, the inlet air flow at the periphery of the heat dissipation fan 40 can be guided, meanwhile, the area of the inlet air flow entering the heat dissipation fan 40 area is increased, and the inlet air flow is increased; the upper surface of the first edge 331 is higher than the upper surface of the heat dissipation fan 40, so that the outlet air flow of the heat dissipation fan 40 can be guided, and the leakage of the outlet air flow at the periphery of the fan is reduced, thereby reducing the loss of the outlet air flow and optimizing the heat dissipation effect of the outlet air flow on the heating element.

Wherein, optionally, the distance between the lower surface of the first edge 331 and the upper surface of the heat dissipation fan 40 is 30% -60% of the thickness of the heat dissipation fan 40. When the distance between the lower surface of the first edge 331 and the upper surface of the heat dissipation fan 40 is too small in percentage of the thickness of the heat dissipation fan 40, the whole structure of the first edge 331 is located at the upper half of the heat dissipation fan 40, resulting in too high the whole height of the extension 33, thereby increasing the whole thickness of the induction cooker. When the distance between the lower surface of the first edge 331 and the upper surface of the heat dissipation fan 40 is too large in the thickness percentage of the heat dissipation fan 40, the whole structure of the first edge 331 is located at the lower half portion of the heat dissipation fan 40, which causes the distance between the extension portion 33 and the bottom wall 11 of the bottom case 10 to be too small, thereby affecting the size of the air inlet and reducing the flow of the inlet air. Therefore, in practical use, the user can select a specific percentage of the distance between the lower surface of the first edge 331 and the upper surface of the heat dissipation fan 40 in the thickness of the heat dissipation fan 40 within the above range according to needs, and the specific value is not limited in the embodiment.

As an achievable embodiment, the upper surface of the extension 33 extends to the lower surface of the panel. Such setting can effectively reduce the distance between the upper surface of extension 33 and the panel lower surface to avoid the air-out wind current at cooling fan 40 top to leak outward from the clearance between the upper surface of extension 33 and the lower surface of panel, reduce the loss of air-out wind current, guarantee that air-out wind current flows to heating element as much as possible, improve the radiating effect to heating element.

As an achievable embodiment, the lower surface of the extension 33 is flat, inclined or curved. The lower surface of the extension part 33 is a plane, which can reduce the flowing resistance of the inlet airflow, thereby increasing the flow velocity of the inlet airflow and improving the heat dissipation efficiency. The lower surface of the extension portion 33 can also be an inclined surface or an arc surface, and the height of the lower surface of the extension portion 33 is gradually reduced from the side close to the accommodating cavity to the side far away from the accommodating cavity, so that the flow of the air inlet flow entering the accommodating cavity can be increased, and the heat dissipation effect is improved. In practical use, a user may set a specific slope value when the lower surface of the extension portion 33 is a slope surface or a specific arc value when the lower surface is an arc surface, which is not limited in this embodiment.

As an achievable embodiment, the thickness of the first edge 331 is in the range of 10-25 mm. As an achievable embodiment, the first edge 331 is provided with a first flange 332, the end of the first flange 332 extending towards the panel side, the first flange 332 having a height in the range of 10-25 mm. This ensures that the first edge 331 has a sufficient thickness on one side thereof to guide the flow of the intake air.

Specifically, the side of the extension 33 away from the heat dissipation fan 40 has a second edge 333, and the second edge 333 is disposed near the second sidewall section 15. Wherein the second edge 333 may be linear. Because the second edge 333 is close to the second side wall section 15, the second edge 333 is set to be linear, so that the degree of fitting between the second edge 333 and the second side wall section 15 can be improved, the structural adaptability between the extension portion 33 and the bottom case 10 is improved, and the setting stability of the extension portion 33 is improved.

Wherein the second edge 333 may be provided with a second cuff 334, the end of the second cuff 334 extending towards the panel. Because the air inlet hole 12 can be arranged on at least part of the second side wall section 15, the second flanging 334 can protect the circuit board 30, can block at least part of water vapor, oil smoke or dust to a certain extent, and reduce the probability that the water vapor, oil smoke or dust directly fall onto the circuit board 30 through the air inlet hole 12 to cause the damp or damage of the circuit board 30, thereby effectively protecting the circuit board 30. In addition, if someone stretches the strip-shaped or rod-shaped conductor into the bottom case 10 from the part of the air inlet 12, the conductor stretched from the part of the air inlet 12 cannot easily touch the live circuit board 30 due to the existence of the second flange 334, so that the probability of electric shock caused by the fact that the conductor stretched from the air inlet 12 touches the circuit board 30 in the bottom case 10 is reduced to a certain extent, and the safety is improved.

Specifically, the circuit board 30 includes a circuit board support 31 and a circuit board body 32 disposed above the circuit board support 31, and the circuit board support 31 is located between at least a portion of the circuit board body 32 and at least a portion of the air inlet opening 12.

At least part of the circuit board support 31 extends to at least part of the outer periphery of the heat sink 40 and forms an extension 33.

It should be noted that the circuit board support 31 may support, mount and protect the circuit board body 32, and as shown in fig. 5, the circuit board support 31 has a mounting plane on which the lower surface of the circuit board body 32 is disposed, so as to improve the mounting and supporting stability of the circuit board body 32. The circuit board support 31 is located between at least part of the circuit board body 32 and at least part of the air inlet 12, so that water vapor, oil smoke or dust outside the accommodating cavity can be prevented from falling on the circuit board body 32 through the air inlet 12, an external conductor is prevented from contacting the circuit board body 32 through the air inlet 12, and the use safety and stability of the circuit board body 32 are improved.

Because the circuit board body 32 is an independent structural member in the bottom case 10, the structure of the circuit board body is not affected by the bottom case 10 and the panel, so that at least part of the circuit board body 32 forms the extension portion 33, the structural flexibility of the extension portion 33 can be improved, and the adaptability of the extension portion 33 and the periphery of the cooling fan 40 is ensured.

As an implementation, the circuit board support 31 is a plastic member. Such an arrangement can manufacture the circuit board support 31 by injection molding, and because the circuit board support 31 includes the extension portion 33, the structure is irregular, and the injection molding can reduce the manufacturing difficulty of the special-shaped circuit board support 31. And the plastic part is generally made of insulating materials, so that the influence on the working process of the electronic elements on the circuit board body 32 can be reduced, and the problem of short circuit or electromagnetic interference is avoided.

As an implementable embodiment, the lower surface of the circuit board support 31 is a flat surface, a slanted surface, or a curved surface. Because the circuit board 30 is located between at least part of the air inlet holes 12 and the heat dissipation fan 40, the lower surface of the circuit board support 31 is a plane, which reduces the flowing resistance of the inlet airflow, thereby increasing the flow velocity of the inlet airflow and improving the heat dissipation efficiency. The lower surface of the circuit board support 31 can also be an inclined surface or an arc surface, and the height of the lower surface of the circuit board support 31 is gradually reduced from one side close to the accommodating cavity to one side far away from the accommodating cavity, so that the flow of the air inlet flow entering the accommodating cavity can be increased, and the heat dissipation effect is improved. In practical use, a user may set a specific slope value when the lower surface of the circuit board support 31 is a slope or a specific arc value when the lower surface is an arc as required, which is not limited in this embodiment.

As an implementation manner, at least one stiffener 312 is disposed on the circuit board support 31 to increase the mechanical strength of the circuit board support 31 and improve the stability of supporting the circuit board body 32. The specific structure and number of the ribs 312 can be set according to the requirement, and the embodiment is not limited thereto.

Referring to fig. 2 and 3, a first air deflector 141 is disposed in the accommodating cavity near the first side wall section 14, a first end of the first air deflector 141 is connected to the fourth side wall section 17, and a second end of the first air deflector 141 extends toward the heat dissipation fan 40.

The air inlet hole 12 is arranged on at least part of the first side wall section 14, a fourth air deflector 19 is arranged between the first air deflector 141 and the first side wall section 14, a first end of the fourth air deflector 19 is connected to the first side wall section 14, and a second end of the fourth air deflector 19 is connected to one end of the first air deflector 141 or the extension 33 close to the first air deflector 141; the first air deflector 141, the fourth air deflector 19, a portion of the first side wall section 14 and a portion of the fourth side wall section 17 together enclose the cavity 80.

The air inlet 12 is disposed on the first side wall section 14 on a side close to the heat dissipation fan 40 and outside the cavity 80, and the circuit board bracket 31 is disposed on a bottom of the circuit board body 32 on a side close to the heat dissipation fan 40 and between the circuit board body 32 and the air inlet 12.

It should be noted that the first air deflector 141, the fourth air deflector 19, a part of the first side wall section 14, and a part of the fourth side wall section 17 together enclose the cavity 80, and the cavity 80 may be a closed cavity 80 or a semi-closed cavity 80. The first end of the fourth air deflector 19 is connected to the middle section of the first side wall section 14, the air inlet hole 12 is located on the side of the first side wall section 14 far away from the cavity 80, the area where the air inlet hole 12 is arranged is separated from the cavity 80 by the fourth air deflector 19, and no air convection exists between the first end and the second end. The arrangement can ensure that the inlet air current entering the air inlet hole 12 flows to the heat dissipation fan 40 directly, and the inlet air current is prevented from flowing to the cavity 80, so that the length of the flowing path of the inlet air current in the accommodating cavity can be reduced, and the loss of the inlet air current is reduced.

In this case, the circuit board support 31 is only located at the bottom of a portion of the circuit board body 32, and the circuit board body 32 can extend into the cavity 80, however, the circuit board body 32 located in the cavity 80 is not affected by the air inlet 12, and therefore the circuit board support 31 is not disposed therein, which can effectively reduce the manufacturing cost and weight of the induction cooker.

In practical use, the specific position of the connection point of the fourth air guiding plate 19 and the first side wall section 14 at the middle section of the first side wall section 14 can be set according to practical needs, which is not limited in this embodiment. Further, the fourth wind deflector 19 can also support the circuit board 30.

Specifically, a second air deflector 151 is disposed in the accommodating cavity on a side close to the second side wall section 15, a first end of the second air deflector 151 is located on a side close to the heat dissipation fan 40, and a second end of the second air deflector 151 extends toward the third side wall section 16.

The second end of the second air deflector 151 is connected to a side of the second side wall section 15 away from the heat dissipation fan 40; alternatively, the second end of the second air deflector 151 is connected to the third sidewall section 16; alternatively, the second end of the second air deflection plate 151 is connected at the connection of the second side wall section 15 and the third side wall section 16.

As an achievable embodiment, the air inlet openings 12 are provided over the entire second side wall section 15. Therefore, the area of the arrangement area of the air inlet holes 12 can be increased, so that the number of the air inlet holes 12 on the second side wall section 15 is increased, and the air flow of the inlet air is improved. The second air deflector 151 can guide the flow of the inlet air, so that the inlet air is ensured to flow to an area close to the heat dissipation fan 40, and the accumulation of the inlet air in a dead angle area between the second air deflector 151 and the second side wall section 15 is avoided.

In another embodiment, the air inlet opening 12 is disposed on at least a portion of the second side wall section 15, and the receiving cavity further has a third air guiding plate 18 disposed therein, wherein a first end of the third air guiding plate 18 extends toward the second side wall section 15, and a second end of the third air guiding plate 18 extends toward a first end of the second air guiding plate 151.

The air inlet openings 12 are provided on the second side wall section 15 on the side close to the radiator fan 40. In this case, the second air guiding plate 151 may not be disposed in the accommodating cavity, and only the third air guiding plate 18 is used to guide the intake air flow, or the second air guiding plate 151 may be disposed, and the second air guiding plate 151 guides the heat dissipating air flow around the coil panel 70 to flow to the air outlet 13 on the third side wall section 16.

In another practical embodiment, the air inlet 12 is disposed on the second side wall section 15 on a side close to the heat dissipation fan 40, and the air outlet 13 on the bottom case 10 is disposed on the second side wall section 15 on a side away from the heat dissipation fan 40.

It should be noted that, with such an arrangement, the air inlet 12 can be ensured to be as close to the heat dissipation fan 40 as possible, which is beneficial for the inlet air flow to the heat dissipation fan 40 quickly, the air outlet 13 is as close to the coil panel 70 as possible, and the high-temperature outlet air flow flows out of the accommodating cavity as soon as possible. In this case, the third air deflector 18 disposed in the accommodating cavity isolates the inlet air flow and the outlet air flow, thereby preventing the inlet air flow and the outlet air flow from being influenced by mutual convection.

In particular, a first end of the third air deflection plate 18 is connected to the second side wall section 15. The specific connection position of the third air guiding plate 18 on the second side wall section 15 can be set according to practical needs, and this embodiment does not limit this. In an implementation, the second end of the third air guiding plate 18 is connected to the first end of the second air guiding plate 151. As another realizable embodiment, the third air guiding plate 18 is connected to an end of the extending portion 33 away from the circuit board body 32. The arrangement can improve the flexibility of the third air deflector 18 and reduce the assembly difficulty of the induction cooker.

A second gap is formed between the lower surface of the heat dissipation fan 40 and the bottom wall 11 of the bottom shell 10, and the second gap is communicated with the air inlet and forms an air inlet part of a fan cavity of the heat dissipation fan 40. A third gap is formed between the upper surface of the heat dissipation fan 40 and the panel, and the third gap is communicated with the air outlet 13 of the bottom case 10 and forms an air outlet part of a fan cavity of the heat dissipation fan 40. Due to the arrangement, the heat radiation fan 40 can form a bottom air inlet and top air outlet air flow flowing mode, and the air flow guiding effect of the heat radiation fan 40 is improved.

Further, a first air inlet area of the heat dissipation fan 40 is formed between the first air deflector 141 and at least a part of the first side wall section 14, and at least a part of the circuit board 30 is located in the first air inlet area. A second air inlet area of the heat dissipation fan 40 is formed between the second air deflector 151 and at least a part of the second side wall section 15. The first air inlet area and the second air inlet area are both communicated with an air inlet part of a fan cavity of the heat dissipation fan 40. Due to the arrangement, air flows in the first air inlet area and the second air inlet area can conveniently flow to the heat dissipation fan 40, and meanwhile, the heat dissipation and cooling effects of the air flows in the first air inlet area on the circuit board 30 in the first air inlet area are achieved.

Specifically, a fourth gap is formed between the circuit board support 31 and the side wall of the bottom case 10, a third flange 311 is disposed at one end of at least a portion of the circuit board support 31 close to the side wall of the bottom case 10, and an end of the third flange 311 extends toward the panel.

It should be noted that, based on the air inlet 12 disposed on the side wall of the bottom case 10, the third flange 311 is disposed on a section of at least a portion of the circuit board support 31 near the side wall, so that the third flange 311 can be utilized to protect the circuit board body 32, prevent the water vapor, oil smoke or dust outside the accommodating cavity from falling on the circuit board body 32 through the air inlet 12, and prevent the external conductive body from contacting the circuit board body 32 through the air inlet 12, thereby improving the safety and stability of the use of the circuit board body 32. Meanwhile, the third turned-over edge 311 can also play a role in guiding the air flow entering through the air inlet 12, so that the air flow is prevented from accumulating in a dead angle area between the third turned-over edge 311 and the side wall, and the air flow entering the heat dissipation fan 40 is ensured.

Optionally, the height of the third flange 311 ranges from 10 mm to 25 mm. In practical use, the user may set a specific value of the height of the third flange 311 as needed, which is not limited in this embodiment.

Specifically, the first air guiding plate 141 and the second air guiding plate 151 are disposed in the accommodating cavity at an interval, the extending portion 33 is located in the interval area, and two ends of the extending portion 33 are respectively abutted to the first air guiding plate 141 and the second air guiding plate 151. The two ends of the extension part 33 are respectively abutted against the first air deflector 141 and the second air deflector 151, so that air currents leaking between the first air deflector 141 and the extension part 33 and between the second air deflector 151 and the extension part 33 can be effectively reduced, the air inlet flow is improved, and the heat dissipation effect of the heating element is ensured.

The end of the extending portion 33 may overlap and abut at least a portion of the first wind deflector 141. The end of the extension 33 may overlap and abut at least a portion of the second wind guide plate 151. By providing an overlapping region between extension 33 and at least a portion of first air deflector 141 and an overlapping region between extension 33 and at least a portion of second air deflector 151, the stability of abutment thereof can be improved, and not only the stability of installation of extension 33 in bottom case 10 can be improved, but also the amount of loss of the air flow can be reduced.

Specifically, when the first air guiding plate 141 abuts against the extending portion 33, or the second air guiding plate 151 abuts against the extending portion 33, the abutting angle or the radian of the abutting portion may be inconsistent, so that the stability of the abutting of the extending portion 33 against the first air guiding plate 141 and the second air guiding plate 151 is reduced, and even a large gap may occur at the abutting portion, which causes the loss of the intake air flow.

In order to solve this problem, as shown in fig. 5, a first transition piece 335 is provided between the first air deflector 141 and the extension portion 33, and the first air deflector 141 and the extension portion 33 are in contact with each other via the first transition piece 335. First transition piece 335 is connected to bottom wall 11 of bottom case 10, and/or first transition piece 335 is connected to first air deflector 141, and/or first transition piece 335 is connected to a side of extension 33 close to first air deflector 141.

It should be noted that the first transition piece 335 may have a straight line structure, an extension length of the straight line structure may be set according to a structure of the first air guiding plate 141, one end of the first transition piece 335 is adapted to the arc structure of the extension portion 33, and the other end is adapted to the straight line structure of the first air guiding plate 141, so that the first air guiding plate 141 and the extension portion 33 may overlap and abut through the first transition piece 335, thereby reducing an assembly difficulty of the first air guiding plate 141 and the extension portion 33, and reducing an assembly gap between the first air guiding plate 141 and the extension portion 33.

A second transition part 336 is arranged between the second air guiding plate 151 and the extension part 33, and the second air guiding plate 151 and the extension part 33 are abutted through the second transition part 336. Second transition member 336 is connected to bottom wall 11 of bottom case 10, and/or second transition member 336 is connected to second air deflector 151, and/or second transition member 336 is connected to a side of extension portion 33 adjacent to second air deflector 151.

It should be noted that the second transition piece 336 may have an arc-shaped structure, a bending angle of the arc-shaped structure may be set according to a structure of the second wind deflector 151, one end of the second transition piece 336 is adapted to the arc-shaped structure of the extension portion 33, and the other end of the second transition piece 336 is adapted to the structure of the second wind deflector 151, so that the second wind deflector and the extension portion 33 may be overlapped and abutted through the second transition piece 336, thereby reducing an assembly difficulty of the second wind deflector 151 and the extension portion 33, and reducing an assembly gap between the second wind deflector and the extension portion 33.

In practical use, the specific structures of the first transition piece 335 and the second transition piece 336 may be adjusted according to the specific structures of the extension portion 33, the first wind deflector 141 and the second wind deflector 151, which is not limited by the embodiment and is not limited by the above-mentioned text and the drawings.

Specifically, the circuit board 30 is disposed in the receiving cavity through the connecting assembly 50. The connecting assembly 50 includes at least one fixing post 52 disposed in the bottom case 10 and at least one fixing hole 51 disposed on the circuit board 30, the fixing posts 52 penetrate the fixing holes 51 in a one-to-one correspondence when the circuit board 30 is disposed in the bottom case 10, and at least a portion of the fixing holes 51 are located at an end of the extending portion 33. It should be noted that the fixing holes 51 may be located at end positions or corner positions of the circuit board 30, or may be simultaneously disposed in an area between end points of the circuit board 30, and a plurality of fixing holes 51 may be arranged at intervals, and the specific number and the interval distance of the fixing holes 51 are not limited in this embodiment. The number and the installation position of the fixing posts 52 and the fixing holes 51 may correspond to each other. In the embodiment, the mounting feet of the induction cooker are used as part of the fixing posts 52, so that the stability of the fixing posts 52 can be improved, and the stability of the connection component 50 can be improved. In the installation process, the fixing holes 51 of the circuit board 30 are penetrated by the fixing posts 52, so that the circuit board 30 is guided to be installed.

Of course, the fixing post 52 and the fixing hole 51 can be tightly connected, thereby further achieving the effect of fixed installation. Specifically, the fixing holes 51 may be located on the circuit board support 31 of the circuit board 30, so as to reduce the influence of the fixing holes 51 on the arrangement of the electronic components on the circuit board body 32.

Further, the connection assembly 50 includes at least one connection member 53 disposed on the circuit board body 32, and the connection member 53 is connected to the bottom chassis 10 when the circuit board 30 is disposed in the bottom chassis 10. It should be noted that there may be a plurality of connectors 53, one end of each connector 53 is disposed on the circuit board body 32, and the other end of each connector 53 is connected to the bottom case 10, during the installation process, the circuit board support 31 is first positioned through the fixing holes 51 and the fixing posts 52, and then the circuit board body 32 is disposed on the circuit board support 31, and is fastened and connected by the connectors 53.

As an implementation manner, the connecting member 53 may be an elastic connecting member 53, and during the installation process, the panel covers the bottom shell 10, and applies a certain pressure to the elastic connecting member 53, so as to complete the connection and fastening process of the elastic connecting member 53.

Specifically, the bottom chassis 10 is provided with a support assembly 60 for supporting the circuit board 30, and the support assembly 60 includes one or more of the following components:

at least one first support rib 61, the first support rib 61 being disposed on a face of the first air deflection plate 141 adjacent to the first sidewall section 14. The first support rib 61 may be provided in plural, and the plural first support ribs 61 may be provided at intervals on the surface of the first air deflection plate 141 near the first side wall section 14.

At least one second support rib 62, the second support rib 62 is disposed on the surface of the first side wall section 14 on the side close to the first air deflector 141. The second support rib 62 may be provided in plural, and a plurality of second support ribs 62 may also be provided at intervals on the surface of the first side wall section 14 adjacent to the first air deflector 141.

At least one third support rib 63, the third support rib 63 being provided on the outer peripheral wall of the fixing column 52. The third support rib 63 may be provided in plurality, and a plurality of the third support ribs 63 may also be provided at intervals along the outer peripheral wall of the fixing column 52. The supporting component 60 can support the circuit board 30, so that the mounting stability of the circuit board 30 can be improved, and the difficulty of the mounting process can be reduced.

As an achievable embodiment, the spacing between the upper surface of the extension 33 and the lower surface of the panel is in the range 0.5-1 mm. When the distance between the two is too small, the shaking process of the extension part 33 can impact the panel and even damage the panel, and meanwhile, the difficulty of assembly is increased due to too small assembly gap between the two. When the distance between the two is too large, the leakage of the inlet air flow is too large, and the heat dissipation effect of the induction cooker is affected.

Optionally, the circuit board 30 is a lamp panel and/or a power panel 90. In the present embodiment, the circuit board 30 is taken as an example of the lamp panel to perform the above description, in practical use, the circuit board 30 may also be a power panel 90, and of course, the lamp panel and the power panel 90 may also be an integrated structure.

Example two

Fig. 8 is a schematic structural view of the accommodating cavity of the induction cooker with the circuit board body taken out according to the second embodiment of the present invention. Fig. 9 is a schematic structural view of the accommodating cavity of the induction cooker with the circuit board taken out according to the second embodiment of the present invention. Fig. 10 is a schematic structural view of a third flanging side of a circuit board support of an induction cooker according to an embodiment of the present invention. Fig. 11 is a schematic structural view of a first flanging side of a circuit board support of an induction cooker according to an embodiment of the present invention. Fig. 12 is a schematic structural view of a lower surface side of a circuit board support of an induction cooker according to an embodiment of the present invention.

Referring to fig. 8 to 12, on the basis of the first embodiment, a second embodiment of the present invention provides an induction cooker, and compared with the first embodiment, the second embodiment of the present invention has the following differences: the arrangement positions of the air inlet holes 12, the structure of the circuit board support 31 and the arrangement positions are different.

Specifically, the air inlet opening 12 is provided throughout the first side wall section 14, and the circuit board bracket 31 is provided throughout the bottom of the circuit board body 32 and between the circuit board body 32 and the air inlet opening 12.

It should be noted that, by such an arrangement, the area of the air inlet holes 12 on the first side wall section 14 can be increased, so that the number of the air inlet holes 12 on the first side wall section 14 is increased, the air inlet flow rate is increased, and the heat dissipation effect is enhanced. In this case, because the air inlet holes 12 are located on the whole first side wall section 14, the circuit board support 31 needs to be disposed at the bottom of the whole circuit board body 32, so as to protect the circuit board body 32, and prevent the circuit board body 32 from being affected by moisture or damage due to water vapor, oil smoke or dust entering from any position of the air inlet holes 12, or prevent the electrical conductors entering from the air inlet holes 12 from affecting the stability of the electronic components on the circuit board body 32.

At this time, the fourth air guiding plate 19 is not disposed between the first air guiding plate 141 and the first side wall section 14, so that the fourth air guiding plate 19 is prevented from blocking the intake air flow stably.

Other technical features are the same as those of the first embodiment, and the same or corresponding technical effects can be obtained, which are not described herein again.

The embodiment of the utility model provides an electromagnetism stove that second provides, at least part periphery and formation extension through extending to the radiator fan with the at least part of circuit board, utilize the first clearance that forms between the diapire of this extension and drain pan as radiator fan's at least partial air intake, based on circuit board structure and drain pan structure mutually independent, and circuit board structure's installation space is comparatively abundant, consequently, the mould manufacturing process does not receive the influence of drain pan structure, the manufacturing degree of difficulty of radiator fan air intake structure has been reduced greatly, the while has been avoided producing the influence to structure and electronic component's on the drain pan installation. And the structure and the size of the air inlet formed by the extension part can be adjusted according to the structure of the heat dissipation fan, the formed air inlet structure is flexible, the air inlet amount of the heat dissipation fan is increased, and the heat dissipation and cooling effects of the heat dissipation fan are enhanced.

EXAMPLE III

On the basis of the first embodiment and the second embodiment, the third embodiment of the present invention provides an induction cooker with another structure, and compared with the first embodiment or the second embodiment, the third embodiment of the present invention has the following differences: the air inlet structures of the cooling fans are different.

Specifically, be provided with the upper cover between drain pan and the panel, the one side of covering near cooling fan on the upper cover is provided with first muscle that keeps out the wind, and first muscle that keeps out the wind sets up around cooling fan. And a fifth gap is formed between the first wind blocking rib and the bottom wall of the bottom shell, and the first gap and the fifth gap jointly form an air inlet of the heat radiating fan.

It should be noted that, in this embodiment, at least a portion of the circuit board is extended to at least a portion of an outer periphery of the heat dissipation fan to form an extended portion, and the upper cover is provided with a first wind shielding rib, where the first wind shielding rib can surround at least a portion of the outer periphery of the heat dissipation fan. And a gap formed between the extension part and the bottom wall of the bottom shell and between the first wind shielding rib and the bottom wall of the bottom shell is used as at least part of the air inlet of the heat dissipation fan. Compare and set up the air intake structure in prior art in the drain pan, the structure based on the drain pan is comparatively complicated, has increased the structural complexity of the mould that uses in the manufacturing process, and the mould that the structure is complicated has restricted the structure and the size of air intake, influences cooling fan's intake.

However, the extension portion of the present embodiment is located on the circuit board, and the circuit board, the bottom case, the upper cover and the panel are all separated from each other, so the structure is not limited by the three. The first wind-shielding rib is positioned on the upper cover, and the upper cover and the bottom shell structure are mutually independent, so that the wind-shielding rib is not limited by the bottom shell structure. Therefore, the air inlet of the heat dissipation fan formed by the extension part and the first wind blocking rib can be adjusted adaptively according to the structure of the heat dissipation fan, the structural flexibility of the air inlet is higher, the air inlet volume of the heat dissipation fan is increased, the heat dissipation and cooling effects of the heat dissipation fan are enhanced, the working stability and the working efficiency of the induction cooker are ensured, and the service life of the induction cooker is prolonged.

As an alternative embodiment, the side of the extension part adjacent to the heat dissipation fan has an edge, and the side of the first wind shielding rib adjacent to the heat dissipation fan also has an edge.

Two edges are arc-shaped, the two edges are all surrounded on at least part of the periphery of the heat dissipation fan, and the two arc-shaped edges are all concentrically arranged with the circle center of the heat dissipation fan.

And/or the area of the periphery of the heat dissipation fan, which is surrounded by the edge of one side of the extension part close to the heat dissipation fan, accounts for 10% -15% of the whole periphery of the heat dissipation fan.

And/or the area of the periphery of the heat radiation fan surrounded by the edge of one side of the first wind shielding rib close to the heat radiation fan accounts for 20% -25% of the whole periphery of the heat radiation fan.

And/or the central angle of the edge of one side of the arc-shaped extension part close to the heat dissipation fan ranges from 40 degrees to 50 degrees.

And/or the central angle of the edge of one side, close to the heat radiation fan, of the first arc-shaped wind shielding rib ranges from 70 degrees to 90 degrees.

The edge of the extending part and the edge of the first wind blocking rib are arranged to be arc-shaped, so that a surrounding structure is formed for the heat dissipation fan, air inlet flow is gathered to the heat dissipation fan, and the air inlet amount of the heat dissipation fan is increased.

As an alternative embodiment, the thickness of the edge of the side of the extension part close to the heat radiation fan and the thickness of the edge of the side of the first wind shielding rib close to the heat radiation fan are both 10-25 mm.

And/or the edge of one side of the extension part close to the heat dissipation fan and the edge of one side of the first wind shielding rib close to the heat dissipation fan are respectively provided with flanges, the end parts of the two flanges extend towards one side of the panel, and the height ranges of the two flanges are 10-25 mm.

As an alternative embodiment, an upper surface of an edge of the side of the extension portion close to the heat dissipation fan and an upper surface of an edge of the first wind shielding rib close to the heat dissipation fan are flush, and a lower surface of an edge of the side of the extension portion close to the heat dissipation fan and a lower surface of an edge of the first wind shielding rib close to the heat dissipation fan are flush.

The edge of one side of the extension part close to the heat dissipation fan and the upper surface of the edge of one side of the first wind shielding rib close to the heat dissipation fan are both higher than the upper surface of the heat dissipation fan, and the edge of one side of the extension part close to the heat dissipation fan and the lower surface of the edge of one side of the first wind shielding rib close to the heat dissipation fan are both located between the upper surface and the lower surface of the heat dissipation fan.

Such setting can make during cooling blower lower surface and the drain pan generate heat the air inlet air current between the diapire and get into cooling blower as far as, guarantee simultaneously that the air outlet air current of cooling blower upper surface can flow to heating element position as far as, optimize heating element's radiating effect.

And/or the distance between the lower surface of the edge of one side of the extension part close to the heat radiation fan and the lower surface of the edge of one side of the first wind shielding rib close to the heat radiation fan and the upper surface of the heat radiation fan is 30-60% of the thickness of the heat radiation fan.

And/or the upper surfaces of the extending part and the first wind shielding rib extend to the lower surface of the panel. The arrangement can avoid the leakage of the air outlet flow of the heat dissipation fan and ensure the heat dissipation effect of the air outlet flow on the heating element.

And/or the lower surfaces of the extension part and the first wind blocking rib are both planes, inclined planes or cambered surfaces.

Other technical features are the same as those of the first embodiment and the second embodiment, and the same or corresponding technical effects can be obtained, which are not described in detail herein.

Example four

On the basis of the first embodiment and the second embodiment, the fourth embodiment of the present invention provides an induction cooker with another structure, and compared with the first embodiment, the fourth embodiment of the present invention has the following differences: the air inlet structures of the cooling fans are different.

Specifically, one side of the bottom shell close to the heat dissipation fan is provided with a second wind blocking rib, and the second wind blocking rib is arranged around the heat dissipation fan. And a sixth gap is formed between the second air blocking rib and the bottom wall of the bottom shell, and the first gap and the sixth gap jointly form an air inlet of the heat radiating fan.

It should be noted that, in this embodiment, at least a portion of the circuit board is extended to at least a portion of the periphery of the heat dissipation fan to form an extended portion, and a second wind blocking rib is disposed on the bottom case, and the second wind blocking rib can surround at least a portion of the periphery of the heat dissipation fan. Utilize the clearance between the diapire of this extension and second fender wind muscle and drain pan as cooling blower's at least partial air intake, compare and only set up the air intake structure in the drain pan among the prior art, the structure based on the drain pan is comparatively complicated, has increased the structure complexity of the mould that uses in the manufacturing process, and the mould that the structure is complicated has restricted the structure and the size of air intake, influences cooling blower's air inlet volume.

However, the extension portion of the present embodiment is located on the circuit board, and is separated from the bottom case, the upper cover, and the panel, which are independent from each other, so the structure of the extension portion is not limited by the bottom case, the upper cover, and the panel. The extension portion and the second wind blocking rib are matched with each other, so that the air inlet of the formed heat dissipation fan can be adjusted in adaptability according to the structure of the heat dissipation fan, the structural flexibility of the air inlet is higher, the air inlet amount of the heat dissipation fan is increased, the heat dissipation and cooling effects of the heat dissipation fan are enhanced, the working stability and the working efficiency of the induction cooker are guaranteed, and the service life of the induction cooker is prolonged.

As an alternative embodiment, the second wind blocking rib has a supporting portion and a wind blocking portion connected to each other, the wind blocking portion has a gap with the bottom wall of the bottom case, and the supporting portion is connected between the wind blocking portion and the bottom wall of the bottom case. And/or the supporting part is connected to one end of the wind shielding part close to the extending part.

Through setting up the second fender wind muscle into supporting part and wind-break portion, utilize the supporting part to support wind-break portion, utilize wind-break portion restriction cooling fan's air inlet wind to flow and play the guide effect to the air inlet wind, thereby improve the installation stability of second fender wind muscle, the reinforcing is to cooling fan's air inlet wind guide effect that flows.

As an alternative embodiment, the extension has an edge on a side thereof adjacent to the heat dissipation fan. The edge and the second wind blocking rib are both arc-shaped and surround at least part of the periphery of the heat dissipation fan. The arc-shaped edge and the second wind blocking rib are arranged concentrically with the circle center of the heat dissipation fan. And/or the area of the edge surrounding the periphery of the cooling fan accounts for 10% -15% of the whole periphery of the cooling fan. And/or the area of the second wind blocking rib surrounding the periphery of the heat radiation fan accounts for 20-25% of the whole periphery of the heat radiation fan. And/or the central angle of the edge of the arc ranges from 40 to 50. And/or the central angle of the arc-shaped second wind blocking rib ranges from 70 degrees to 90 degrees.

The edge of one side of the extending part, which is close to the heat dissipation fan, and the second air blocking rib are arranged to be arc-shaped, so that a surrounding structure is formed for the heat dissipation fan, the gathering of air inlet flow to the heat dissipation fan is facilitated, and the air inlet amount of the heat dissipation fan is increased.

As an alternative embodiment, the thickness of the edge and the wind shield each range from 10 to 25 mm. And/or the edge is provided with a flange, the end part of the flange extends towards one side of the panel, and the height of the flange ranges from 10 mm to 25 mm.

As an alternative embodiment, the upper surface of the rim is flush with the upper surface of the windscreen and the lower surface of the rim is flush with the lower surface of the windscreen. The upper surfaces of the edge and the wind shielding part are higher than the upper surface of the heat radiation fan, and the lower surfaces of the edge and the wind shielding part are both positioned between the upper surface and the lower surface of the heat radiation fan.

Such setting can make the air inlet air current between the diapire of cooling blower lower surface and drain pan get into cooling blower as far as, guarantee simultaneously that the air outlet air current of cooling blower upper surface can flow to heating element position as far as possible, optimize heating element's radiating effect.

And/or the distance between the edge and the lower surface of the windshield part and the upper surface of the heat dissipation fan is 30-60% of the thickness of the heat dissipation fan. And/or the upper surfaces of the extending part and the second wind blocking rib extend to the lower surface of the panel. And/or the lower surfaces of the extension part and the second wind blocking rib are both planes, inclined planes or cambered surfaces. The arrangement can avoid the leakage of the air outlet flow of the heat dissipation fan and ensure the heat dissipation effect of the air outlet flow on the heating element.

Other technical features are the same as those of the first to the second embodiments, and the same or corresponding technical effects can be obtained, which are not described herein again.

EXAMPLE five

On the basis of the first embodiment to the fourth embodiment, the fifth embodiment of the present invention provides an induction cooker with another structure, and compared with the first embodiment, the fifth embodiment has the following differences: the air inlet structures of the cooling fans are different.

Specifically, an upper cover is arranged between the bottom shell and the panel, a first wind blocking rib is arranged on one side, close to the heat dissipation fan, of the upper cover, and a second wind blocking rib is arranged on one side, close to the heat dissipation fan, of the bottom shell; first fender wind muscle and second fender wind muscle all set up around radiator fan.

It should be noted that, in this embodiment, at least a portion of the circuit board extends to at least a portion of the periphery of the heat dissipation fan and forms an extension portion, the upper cover is provided with a first wind blocking rib, the bottom shell is provided with a second wind blocking rib, and both the first wind blocking rib and the second wind blocking rib can surround at least a portion of the periphery of the heat dissipation fan. And gaps formed among the extension parts, the first wind blocking ribs, the second wind blocking ribs and the bottom wall of the bottom shell are used as at least part of air inlets of the heat dissipation fan. Compared with the prior art in which an air inlet structure is only arranged in the bottom shell, the structure based on the bottom shell is complex, the structural complexity of a mold used in the manufacturing process is increased, the structure and the size of the air inlet are limited by the mold with the complex structure, and the air inlet amount of the heat dissipation fan is influenced.

However, the extension portion of the present embodiment is located on the circuit board, and the circuit board, the bottom case, the upper cover and the panel are all separated from each other, so the structure is not limited by the three. The first wind-shielding rib is positioned on the upper cover, and the upper cover and the bottom shell structure are mutually independent, so that the wind-shielding rib is not limited by the bottom shell structure. Therefore extension, first muscle and the second muscle three that keeps off the wind of keeping off the wind mutually support, and the air intake of the radiator fan who forms can carry out the adaptability adjustment according to radiator fan's structure, and the structural flexibility ratio of air intake is higher, has improved radiator fan's intake, has strengthened radiator fan's heat dissipation cooling's effect, guarantees the stability and the high efficiency of electromagnetism stove work, prolongs the life of electromagnetism stove.

Other technical features are the same as those in the first to fourth embodiments, and the same or corresponding technical effects can be obtained, which are not described in detail herein.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The induction cooker comprises a bottom shell (10), an upper cover (20) arranged on the bottom shell (10) and a panel arranged on the upper cover (20) in a covering mode, wherein the bottom shell (10), the upper cover (20) and the panel jointly enclose an accommodating cavity, a heat dissipation fan (40) and a circuit board (30) are arranged in the accommodating cavity, an air inlet hole (12) is formed in the bottom shell (10), and the induction cooker is characterized in that a wind shield is arranged on one side, close to the air inlet hole (12), in the accommodating cavity, the wind shield, the bottom shell (10), the upper cover (20) and the panel are arranged in a split mode, a gap is formed between the wind shield and the bottom wall (11) of the bottom shell (10), and at least part of air inlets of the heat dissipation fan (40) are formed in the gap.

2. The induction hob according to claim 1, characterized in, that at least part of the circuit board (30) extends to at least part of the periphery of the cooling fan (40) and forms an extension (33), the extension (33) forming the wind deflector;

a first gap is formed between the extension part (33) and the bottom wall (11) of the bottom shell (10), and the first gap forms at least part of an air inlet of the heat radiation fan (40).

3. The induction hob according to claim 2, characterized in that the air inlet opening (12) is provided on a side wall of the bottom shell (10), the side wall of the bottom shell (10) comprises at least a first side wall section (14), a second side wall section (15), a third side wall section (16) and a fourth side wall section (17) connected in sequence, the heat dissipation fan (40) is provided in the accommodation chamber near a junction of the first side wall section (14) and the second side wall section (15);

the air inlet openings (12) are arranged at least in sections on the first side wall section (14) and/or at least in sections on the second side wall section (15).

4. The induction hob according to claim 3, characterized in, that the side of the extension (33) close to the cooling fan (40) has a first edge (331);

the first edge (331) is arc-shaped, the first edge (331) surrounds at least part of the periphery of the heat radiation fan (40), and the arc-shaped first edge (331) is concentrically arranged with the center of the heat radiation fan (40);

and/or the area of the first edge (331) surrounding the outer circumference of the heat dissipation fan (40) is at least 1/3 of the whole outer circumference of the heat dissipation fan (40);

and/or the central angle of the first edge (331) ranges from 50 ° to 150 °.

5. The induction cooking oven according to claim 4, wherein an upper surface of said first edge (331) is higher than an upper surface of said heat dissipation fan (40), and a lower surface of said first edge (331) is located between the upper surface and the lower surface of said heat dissipation fan (40);

and/or the distance between the lower surface of the first edge (331) and the upper surface of the heat dissipation fan (40) is 30% -60% of the thickness of the heat dissipation fan (40);

and/or the upper surface of the extension (33) extends to the lower surface of the panel;

and/or the lower surface of the extension part (33) is a plane, a bevel or a cambered surface.

6. The induction hob according to claim 4, characterized in, that the thickness of the first edge (331) ranges from 10-25 mm;

and/or the first edge (331) is provided with a first flange (332), the end of the first flange (332) extends towards one side of the panel, and the height range of the first flange (332) is 10-25 mm.

7. The induction hob according to claim 3, characterized in, that the side of the extension (33) remote from the cooling fan (40) has a second edge (333), the second edge (333) being arranged close to the second side wall section (15);

and/or the second edge (333) is rectilinear;

and/or the second edge (333) is provided with a second flange (334), the end of the second flange (334) extending towards the panel.

8. The induction hob according to any one of the claims 3 to 7, characterized in, that the circuit board (30) comprises a circuit board support (31) and a circuit board body (32) arranged above the circuit board support (31), the circuit board support (31) being located between at least part of the circuit board body (32) and at least part of the air inlet opening (12);

at least a part of the circuit board support (31) extends to at least a part of the outer periphery of the heat dissipation fan (40) and forms the extension part (33);

and/or the circuit board bracket (31) is a plastic part;

and/or the lower surface of the circuit board support (31) is a plane, an inclined plane or an arc surface;

and/or at least one reinforcing rib (312) is arranged on the circuit board support (31).

9. The induction hob according to any one of the claims 1 to 7, characterized in, that the air inlet openings (12) are provided on the bottom wall (11) and/or the side walls of the bottom shell (10);

and/or the heat radiation fan (40) is an axial flow fan;

and/or the heat radiation fan (40) comprises a fan bracket (41) and a fan body (42) arranged on the fan bracket (41), and the fan bracket (41) is positioned at the bottom of the fan body (42).

10. The induction cooking hob according to claim 9, characterized in, that the panel comprises an operating area and a heating area, the air inlet openings (12) being provided on the bottom shell (10) on a side close to the operating area;

and/or the air inlet hole (12) is arranged on the bottom wall (11) of the bottom shell (10), and the air inlet hole (12) is positioned outside the projection area of the heat radiation fan (40) on the bottom wall (11) of the bottom shell (10).

11. The induction hob according to claim 8, characterized in that a first air deflector (141) is arranged in the receiving cavity adjacent to the first side wall section (14), a first end of the first air deflector (141) is connected to the fourth side wall section (17), and a second end of the first air deflector (141) extends towards the cooling fan (40).

12. The induction hob according to claim 11, characterized in, that the air inlet openings (12) are provided over the entire first side wall section (14), the circuit board support (31) is provided over the entire bottom of the circuit board body (32) and between the circuit board body (32) and the air inlet openings (12);

or, the air inlet hole (12) is arranged on at least part of the first side wall section (14), a fourth air deflector (19) is arranged between the first air deflector (141) and the first side wall section (14), a first end of the fourth air deflector (19) is connected to the first side wall section (14), and a second end of the fourth air deflector (19) is connected to one end of the first air deflector (141) or the extension part (33) close to the first air deflector (141); the first air deflector (141), the fourth air deflector (19), a portion of the first side wall section (14) and a portion of the fourth side wall section (17) together enclose a cavity (80);

the air inlet hole (12) is formed in the first side wall section (14) and close to one side of the heat dissipation fan (40), the air inlet hole is located on the outer portion of the cavity (80), the circuit board support (31) is arranged on the bottom of the circuit board body (32) close to one side of the heat dissipation fan (40), and the circuit board body (32) is located between the air inlet holes (12).

13. The induction hob according to claim 11, characterized in that a second air deflector (151) is arranged in the receiving cavity on a side close to the second side wall section (15), a first end of the second air deflector (151) is located on a side close to the heat dissipation fan (40), and a second end of the second air deflector (151) extends towards the third side wall section (16).

14. The induction hob according to claim 13, characterized in, that the second end of the second air deflector (151) is connected to a side of the second side wall section (15) remote from the cooling fan (40); or, the second end of the second air deflector (151) is connected to the third side wall section (16); or, the second end of the second air deflector (151) is connected at the connection of the second and third side wall sections (15, 16).

15. The induction hob according to any one of the claims 3 to 7, characterized in, that the air inlet openings (12) are provided over the entire second side wall section (15).

16. The induction hob according to claim 13, characterized in that the air inlet opening (12) is arranged on at least a part of the second side wall section (15), a third air guiding plate (18) is arranged in the receiving cavity, a first end of the third air guiding plate (18) extends towards the second side wall section (15), and a second end of the third air guiding plate (18) extends towards a first end of the second air guiding plate (151);

and/or the air inlet opening (12) is arranged on one side of the second side wall section (15) close to the heat dissipation fan (40);

and/or an air outlet (13) on the bottom shell (10) is arranged on one side of the second side wall section (15) far away from the heat radiation fan (40).

17. The induction hob according to claim 16, characterized in, that the first end of the third air deflector (18) is connected to the second side wall section (15);

and/or the second end of the third air deflector (18) is connected to the first end of the second air deflector (151);

and/or the third air deflector (18) is connected to one end of the extension part (33) far away from the circuit board body (32).

18. The induction cooker according to claim 12, characterized in that a second gap is provided between the lower surface of the heat dissipation fan (40) and the bottom wall (11) of the bottom casing (10), the second gap is communicated with the air inlet and forms an air inlet part of the fan cavity of the heat dissipation fan (40);

the upper surface of the heat radiation fan (40) and a third gap are arranged between the panels, and the third gap is communicated with the air outlet hole (13) of the bottom shell (10) and forms an air outlet part of a fan cavity of the heat radiation fan (40).

19. The induction cooker according to claim 8, characterized in that a fourth gap is provided between the circuit board support (31) and the side wall of the bottom shell (10), at least a part of the circuit board support (31) near one end of the side wall of the bottom shell (10) is provided with a third flange (311), and the end of the third flange (311) extends towards the panel;

the height range of the third flanging (311) is 10-25 mm.

20. The induction cooker according to claim 13, wherein the first air deflector (141) and the second air deflector (151) are disposed at an interval in the receiving cavity, the extension portion (33) is located in the interval area, and two ends of the extension portion (33) are respectively abutted against the first air deflector (141) and the second air deflector (151);

and/or the end of the extension part (33) is overlapped and abutted with at least part of the first air deflector (141);

and/or the end part of the extension part (33) is overlapped and abutted with at least part of the second air deflector (151).

21. The induction hob according to claim 20, characterized in, that a first transition piece (335) is arranged between the first wind deflector (141) and the extension portion (33), the first wind deflector (141) and the extension portion (33) are abutted by the first transition piece (335);

the first transition piece (335) is connected to the bottom wall (11) of the bottom shell (10), and/or the first transition piece (335) is connected to the first air deflector (141), and/or the first transition piece (335) is connected to the side of the extension portion (33) close to the first air deflector (141);

and/or a second transition piece (336) is arranged between the second air deflector (151) and the extension part (33), and the second air deflector (151) and the extension part (33) are abutted through the second transition piece (336);

the second transition piece (336) is connected to the bottom wall (11) of the bottom shell (10), and/or the second transition piece (336) is connected to the second air deflector (151), and/or the second transition piece (336) is connected to a side of the extension portion (33) close to the second air deflector (151).

22. The induction hob according to claim 13, characterized in that the first air deflector (141) and at least a part of the first side wall section (14) form a first air inlet area of the heat dissipation fan (40), and at least a part of the circuit board (30) is located in the first air inlet area;

a second air inlet area of the heat dissipation fan (40) is formed between the second air deflector (151) and at least part of the second side wall section (15);

the first air inlet area and the second air inlet area are communicated with an air inlet part of a fan cavity of the heat radiation fan (40).

23. The induction hob according to claim 11, characterized in, that the circuit board (30) is arranged in the housing cavity by means of a connection assembly (50);

the connecting assembly (50) comprises at least one fixing column (52) arranged in the bottom shell (10) and at least one fixing hole (51) arranged on the circuit board (30), when the circuit board (30) is arranged in the bottom shell (10), the fixing columns (52) penetrate through the fixing holes (51) in a one-to-one correspondence manner, and at least part of the fixing holes (51) are positioned at the end part of the extending part (33);

and/or, the connection assembly (50) comprises at least one connection (53) provided on the circuit board body (32), the connection (53) being connected to the bottom shell (10) when the circuit board (30) is provided inside the bottom shell (10).

24. The induction hob according to claim 23, characterized in, that a support assembly (60) for supporting the circuit board (30) is provided on the bottom shell (10), the support assembly (60) comprising one or more of:

at least one first support rib (61), the first support rib (61) being disposed on a face of the first air deflector (141) adjacent to the first sidewall section (14);

at least one second support rib (62), wherein the second support rib (62) is arranged on the surface of the first side wall section (14) close to the side of the first air deflector (141);

at least one third support rib (63), the third support rib (63) being provided on the outer peripheral wall of the fixing column (52).

25. Induction cooker according to any of claims 2 to 7, characterized in that the spacing between the upper surface of the extension (33) and the lower surface of the panel is in the range of 0.5-1 mm.

26. The induction hob according to any one of the claims 1 to 7, characterized in, that the circuit board (30) is a lamp panel and/or a power panel (90).

27. The induction cooker according to any one of claims 2-7, wherein an upper cover (20) is disposed between the bottom case (10) and the panel, a first wind blocking rib is disposed on one side of the upper cover (20) close to the heat dissipation fan (40), and a second wind blocking rib is disposed on one side of the bottom case (10) close to the heat dissipation fan (40); the first wind blocking rib and the second wind blocking rib are arranged around the heat radiation fan (40);

a fifth gap is formed between the first wind blocking rib and the bottom wall (11) of the bottom shell (10), a sixth gap is formed between the second wind blocking rib and the bottom wall (11) of the bottom shell (10), and the first gap, the fifth gap and the sixth gap jointly form an air inlet of the heat dissipation fan (40).