CN210425143U - Electromagnetic oven - Google Patents

Abstract

The utility model provides an induction cooker, including drain pan (10), circuit board components (20), fan (30) and be located the panel on drain pan (10), but drain pan (10) and panel enclose holding chamber (13) that can hold circuit board components (20) and fan (30) jointly, but one side that is close to fan (30) on circuit board components (20) is provided with radiator (40), and the air inlet direction and the air-out direction of radiator (40) are the same, and all have with the first air-out direction of fan (30) and predetermine the contained angle. The utility model discloses can reduce each radiating fin of radiating fin's the wind current entrance and the average contained angle of the wind current direction of angle constantly changing to reduce the vortex that the wind current of fan produced in the electromagnetism stove, thereby improve wind speed and amount of wind, optimize the radiating efficiency of circuit board subassembly and electromagnetism stove, guarantee job stabilization nature and high efficiency.

Description

Electromagnetic oven

Technical Field

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

Background

The induction cooker is a common household appliance, has the advantages of rapid heating, no open fire, safety, convenience and the like, and is popular and approved by more and more consumers.

Fig. 1 is a schematic structural diagram of an inside of an induction cooker in the prior art, and referring to fig. 1, the conventional induction cooker mainly includes a bottom case 10 and a panel located on a top of the bottom case 10, a fan 30 and a heating element are disposed inside the bottom case 10, the heating element generally includes a coil panel 60 and a circuit board assembly 20, the coil panel 60 and the circuit board assembly 20 are located at an air outlet of the fan 30, an air flow generated by the fan 30 flows to positions of the circuit board and the coil panel 60, and heat collected around the coil panel 60 is taken away by the air flow, so as to reduce temperatures of the coil panel 60 and the circuit board. The circuit board is located in the corner area between the coil panel 60 and the bottom case 10, the heat sink 40 is disposed on one side of the circuit board close to the coil panel 60, the heat dissipation fins of the heat sink 40 are all disposed along a fixed air-out direction of the fan 30, and the air-out direction gradually changes based on that the air flow direction generated by the fan 30 is along a plurality of tangential directions of the outer edge of the fan 30. The included angle between most radiating fins and the air outlet direction is too large, the radiating fins cannot guide more air to flow to the circuit board, eddy current is easily generated in the corner area of the circuit board, and the radiating efficiency of the air flow is reduced. The existing solution to this problem is to increase the distance between the fan 30 and the heat dissipating fins, reduce the included angle between the heat dissipating fins and the air outlet direction, and ensure that the heat dissipating fins can guide more air flows.

However, the inner space layout of the induction cooker is limited, the design difficulty of the induction cooker can be increased by increasing the distance between the fan and the radiating fins, the adjusting effect is not ideal, and the radiating effect of the induction cooker is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one problem mentioned in the background art, the utility model provides an electromagnetism stove can reduce the vortex that the distinguished and admirable of fan produced in the electromagnetism stove to improve wind speed and amount of wind, optimize the radiating efficiency of circuit board subassembly and electromagnetism stove, guarantee job stabilization nature and high efficiency.

In order to achieve the above object, the utility model provides an electromagnetic oven, including drain pan, circuit board assembly, fan and the panel that is located the drain pan, but the holding chamber that can holding circuit board assembly and fan is enclosed into jointly to drain pan and panel, and the last one side that is close to the fan of circuit board assembly is provided with the radiator, and the air inlet direction and the air-out direction of radiator are the same, and all have with the first air-out direction of fan and predetermine the contained angle.

The utility model provides an induction cooker sets up fan and circuit board assembly through the holding intracavity that encloses at drain pan and panel, utilizes the fan to dispel the heat to circuit board assembly. Through being close to fan one side on circuit board subassembly and setting up the radiator, utilize the heat exchange effect between the air current of radiator reinforcing circuit board subassembly and fan, and set up to the same through the air inlet direction and the air-out direction with the radiator, and all have the predetermined contained angle with first air-out direction, can guarantee that the air current of fan flows through the radiator smoothly, reduce the vortex that the air current produced, improve the wind speed and the amount of wind that the air current flows, optimize the radiating efficiency of circuit board subassembly and electromagnetism stove, guarantee job stabilization nature and high efficiency.

In the above electromagnetic oven, optionally, the heat sink is provided with a heat dissipation air duct, and the extension direction, the air inlet direction and the air outlet direction of the heat dissipation air duct are the same.

The extending direction of the heat dissipation air duct and the first air outlet direction of the fan form a preset included angle; or the extending direction of the heat dissipation air duct and the extending direction of the radiator both have preset included angles with the first air outlet direction of the fan.

The arrangement can ensure that the wind flow of the fan smoothly flows through the heat dissipation air channel of the radiator, reduce the eddy flow generated by the wind flow at the heat dissipation air channel, and the extending direction of the heat dissipation air channel and the first air outlet direction have a first preset included angle, so that the wind speed and the wind quantity of the wind flow flowing through the heat dissipation air channel are improved, and the heat exchange effect of the wind flow and the radiator is enhanced.

In the above electromagnetic oven, optionally, at least a part of the extending direction of the circuit board assembly and the first air outlet direction of the fan have a preset included angle.

The extending direction of at least part of the circuit board assembly is set to be at a preset included angle with the first air outlet direction, so that the air volume and the air speed flowing through the circuit board assembly can be increased, and the heat dissipation efficiency of the circuit board assembly is improved.

In the above electromagnetic oven, optionally, the accommodating cavity is provided with an air deflector, the air deflector includes a first air guiding section at least partially surrounding the fan, and an air outlet area of the fan is formed between two ends of the first air guiding section.

The first end of first wind-guiding section is close to circuit board components one side, and the tangential direction of the first end of first wind-guiding section on the periphery of fan forms first air-out direction.

The first air guide section of the air guide plate is arranged on at least part of the periphery of the fan, and the first air guide section is used for guiding the air flow generated by the fan to one side of the circuit board assembly, so that the air flow at the position of the circuit board assembly is improved.

In the above electromagnetic oven, optionally, the accommodating cavity has a first side wall, a second side wall, a third side wall and a fourth side wall which are connected in sequence, the fan is close to a joint of the first side wall and the fourth side wall, and the circuit board assembly is located between the fan and the second side wall and extends towards the second side wall.

In the above electromagnetic oven, the preset included angle is optionally in the range of 10-30 °.

In the above electromagnetic oven, optionally, the heat sink includes a heat dissipation plate disposed on the circuit board assembly and a plurality of heat dissipation fins disposed on the heat dissipation plate and parallel to each other, and a heat dissipation air duct is formed between adjacent heat dissipation fins.

The extending direction of the radiating fins and the first air outlet direction of the fan form a preset included angle; or the extending direction of the heat dissipation plate and the extending direction of the heat dissipation fins have preset included angles with the first air outlet direction of the fan.

Through set up heating panel and a plurality of radiating fin on circuit board assembly, utilize the heating panel to increase circuit board assembly's heat conductivility to the heat that will transmit the circuit board assembly on the heating panel through radiating fin distributes away, utilizes the distinguished and admirable outside of carrying this heat to the holding chamber.

In the above electromagnetic oven, optionally, the circuit board assembly includes a first extension section and a second extension section connected to each other, the first extension section is adjacent to the first side wall side, and the second extension section is adjacent to the second side wall side.

The radiator is located the tip that is close to fan one side of first extension, and the extending direction of first extension has preset contained angle with the first air-out direction of fan.

Set up to have through the first extension section with circuit board assembly and predetermine the contained angle for having with first air-out direction, increase the air current volume on the first extension section of circuit board assembly, improve the radiating efficiency of first extension section, avoid simultaneously that the second extension section sets up the position change great, influence the stability that sets up of all the other electronic component of holding intracavity.

In the above electromagnetic oven, optionally, the air guiding plate includes a second air guiding section at least partially disposed on an edge of one side of the side wall of the circuit board assembly close to the accommodating cavity, the second air guiding section extends from a side close to the fan to the second side wall, and an end of the second air guiding section close to the fan is connected to the first end of the first air guiding section.

The first air guide section is located between the fan and the fourth side wall, the second air guide section is located at the edge of one side of the side wall, close to the containing cavity, of the first extension section, and the extension direction of the second air guide section and the first air outlet direction of the fan are provided with a preset included angle.

The second air guide section of the air guide plate is arranged on one side of the side wall, close to the accommodating cavity, of the first extension section of the circuit board assembly, the extension direction of the first air guide section is set to be a preset included angle with the first air outlet direction, the average included angle between each radiating fin at the air flow inlet of the radiating fin and the air flow direction with constantly changed angles is reduced, the air flow of the first air guide section to the first extension section is increased, the air flow and the air speed of the first extension section of the circuit board assembly are improved, and the heat dissipation effect of the circuit board assembly is enhanced.

In the above electromagnetic oven, optionally, an end of the second wind guiding section near the second side wall abuts against the second side wall.

The extending direction of the second wind guide section and the extending direction of the second side wall form an included angle larger than 90 degrees.

Due to the arrangement, the air flow can be prevented from leaking outside the abutting part of the second air guide section and the second side wall, the air flow rate on the circuit board assembly is improved, and the heat dissipation efficiency of the circuit board assembly is ensured.

In the above electromagnetic oven, optionally, the end of the second wind guiding section near the second side wall and the abutment of the second side wall have an arc-shaped transition section.

The arrangement can effectively reduce the wind flow eddy at the abutting part of the end part of the second wind guide section close to the second side wall and the second side wall, and reduce the flowing resistance and the air flow loss of the wind flow, thereby improving the flow rate and the flow speed of the wind flow.

In the above electromagnetic oven, optionally, a third air guiding section is further connected between the first air guiding section and the second air guiding section, the third air guiding section is close to one side of the first side wall, and the third air guiding section extends along the first air outlet direction of the fan.

An air inlet is formed in one side, close to the fan, of the bottom wall of the bottom shell, and an air outlet is formed in one side, close to the third side wall, of the second side wall and/or the third side wall.

The air deflector comprises a fourth air guide section, an air outlet is formed in the third side wall, the fourth air guide section is located between the fan and the fourth side wall, one end of the fourth air guide section is connected with the first air guide section, and the other end of the fourth air guide section extends to the air outlet in the third side wall.

Through set up the third wind-guiding section between first wind-guiding section and second wind-guiding section, set up the fourth wind-guiding section between fan and fourth lateral wall, utilize first wind-guiding section, second wind-guiding section, third wind-guiding section and fourth wind-guiding section of aviation baffle to guide the wind-flow of different positions in the holding chamber respectively to coil panel and circuit board components one side to improve radiating efficiency between them, guarantee electromagnetism stove's stability in use and high efficiency.

In the above electromagnetic oven, optionally, an extending direction of the second wind guiding section near the side of the heat sink is parallel to an extending direction of the heat dissipation fins of the heat sink.

The arrangement can ensure that an air duct which is beneficial to the air flow to flow through is formed between the second air guiding section at one side of the radiator and the heat dissipation air duct, thereby avoiding the air flow at the position from forming a large amount of vortex and reducing the air flow loss and the flow resistance of the air flow.

The structure of the present invention and other objects and advantages thereof will be more clearly understood 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 required 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 creative efforts.

FIG. 1 is a schematic view of the internal structure of a prior art induction cooker;

fig. 2 is a schematic structural diagram of an interior of an induction cooker according to a first embodiment of the present invention;

fig. 3 is a top view of the inside of an induction cooker according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the inside of an induction cooker according to a second embodiment of the present invention;

fig. 5 is a top view of the inside of an induction cooker according to the second embodiment of the present invention.

Description of reference numerals:

10-a bottom shell;

11-an air inlet;

12-an air outlet;

13-a containing cavity;

14-a first side wall;

15-a second side wall;

16-a third side wall;

17-a fourth side wall;

20-a circuit board assembly;

21-a first extension;

22-a second extension;

30-a fan;

40-a radiator;

41-radiating fins;

50-a wind deflector;

51-a first wind guiding section;

52-a second wind guiding section;

53-third wind guiding section;

54-a fourth wind guiding section;

55-a transition section;

60-coil disk.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting 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. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through an intermediary, a connection between two elements, or an interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Fig. 2 is a schematic structural diagram of an inside of an induction cooker according to an embodiment of the present invention. Fig. 3 is a top view of the inside of an induction cooker according to an embodiment of the present invention. Referring to fig. 2 and 3, the induction cooker provided in this embodiment includes a bottom case 10, a circuit board assembly 20, a fan 30, and a panel located on the bottom case 10, where the bottom case 10 and the panel jointly enclose an accommodating cavity 13 capable of accommodating the circuit board assembly 20 and the fan 30, a radiator 40 is disposed on one side of the circuit board assembly 20 close to the fan 30, and an air inlet direction and an air outlet direction of the radiator 40 are the same and both have a preset included angle with a first air outlet direction of the fan 30.

It should be noted that, the bottom case 10 of the induction cooker provided in this embodiment may include a lower cover and an upper cover (not shown in the drawings) that are fastened to each other, wherein the panel covers the upper cover, and the panel, the upper cover and the lower cover jointly enclose the accommodating cavity 13 of the induction cooker. The accommodating cavity 13 is internally provided with a circuit board assembly 20, a coil panel 60, a fan 30, a lamp panel and other structures.

Wherein the coil disk 60 is generally disposed near the middle region of the accommodating chamber 13, and the coil disk 60 is wound with a plurality of coils. The circuit board assembly 20 is disposed at one side of the coil panel 60 and electrically connected to the coil panel 60, and the circuit board assembly 20 is provided with various electronic components, such as resistors, capacitors, diodes, triodes, etc., and circuits formed by the above components, when the induction cooker works, the circuit board assembly 20 inputs electric signals into the coil panel 60, controls the coil panel 60 to work and generate an alternating magnetic field, and the alternating magnetic field interacts with the magnetic conductive pot above the panel, thereby heating the magnetic conductive pot. The fan 30 is located in the accommodating cavity 13, negative pressure is generated in the working process, the air flow with lower temperature outside the accommodating cavity 13 is guided to the accommodating cavity 13 and contacts with heating elements such as the coil panel 60 and the circuit board assembly 20, heat generated by the heating elements during working is conveyed to the outside of the accommodating cavity 13, and the heat is prevented from being accumulated in the accommodating cavity 13 to influence the working stability of the coil panel 60 and the circuit board assembly 20.

The fan 30 may include a fan support fixed on the inner wall of the accommodating cavity 13 and a fan body disposed on the fan support, the fan 30 may be a centrifugal separator or an axial flow fan, and the specific structure and type of the fan 30 are not limited in this embodiment.

Based on the circuit board assembly 20 having a large number of electronic components and circuits for controlling the operation of the coil panel 60 and supplying power to the coil panel 60, in order to ensure the operational stability and efficiency of the coil panel 60 and the circuit board assembly 20, the present embodiment provides the heat sink 40 on the side of the circuit board assembly 20 close to the fan 30, and the heat sink 40 can improve the heat exchange efficiency between the circuit board assembly 20 and the wind flow generated by the fan 30, thereby reducing the heat collected around the circuit board assembly 20. The air inlet direction and the air outlet direction of the radiator 40 are the same, so that the smoothness of air flow flowing through the radiator 40 can be guaranteed, the radiator 40 is prevented from blocking the air flow, the air flow flowing through the radiator 40 can be increased, and the air flow with the higher temperature after heat exchange with the radiator 40 can flow to the outside of the accommodating cavity 13 conveniently.

Further, the air inlet direction and the air outlet direction of the heat sink 40 have a preset included angle with the first air outlet direction of the fan 30, and it can be understood that no matter the fan is an axial flow fan or a centrifugal fan, the air outlet area of the fan 30 surrounds the outside of the fan 30. This embodiment uses axial fan as an example, and this fan 30 guides the outside wind current in accommodation chamber 13 to the accommodation chamber 13 inside in the course of the work to distribute away along the radial periphery of fan 30, therefore the air-out direction is along the tangential direction of the radial periphery of fan 30, for guaranteeing that more wind currents can contact circuit board assembly 20, can set up the first air-out direction of fan 30 to have the preset contained angle with radiator 40 air inlet direction and air-out direction, in order to guarantee that fan 30 carries more wind currents to circuit board assembly 20's position.

Specifically, referring to fig. 1 and 2, an air guiding plate 50 is disposed in the accommodating cavity 13, the air guiding plate 50 includes a first air guiding section 51 at least partially surrounding the periphery of the fan 30, and an air outlet area of the fan 30 is formed between two ends of the first air guiding section 51.

The first end of the first wind guiding section 51 is close to the circuit board assembly 20 side, and the tangential direction of the first end of the first wind guiding section 51 on the outer periphery of the fan 30 forms a first wind outlet direction.

It should be noted that the fan 30 of the present embodiment is disposed on a side of the accommodating cavity 13 close to the inner wall, so that a side of the fan 30 away from the inner wall of the accommodating cavity 13 forms a main air outlet area of the fan 30, in order to guide the air close to the side of the inner side of the accommodating cavity 13 to flow to the coil panel 60 or the circuit board assembly 20, a first air guiding section 51 of the air guiding plate 50 is disposed on at least a portion of the periphery of the fan 30, the first air guiding section 51 is mainly and intensively distributed between the fan 30 and the inner wall of the accommodating cavity 13, and an air outlet area of the fan 30 is formed between two ends of the first air guiding section 51.

The first end of the first air guiding section 51 is close to the circuit board assembly 20 side, and can guide the wind flow to the position of the circuit board assembly 20. And the first air outlet direction of the fan 30 is a tangential direction of the first end of the first air guiding section 51 on the outer periphery of the fan 30, which can be understood as an air outlet point corresponding to the first end of the first air guiding section 51 on the outer periphery of the fan 30, and the tangential direction of the air outlet point is the first air outlet direction. The direction indicated by L in the figure is the first air outlet direction.

Specifically, the heat sink 40 has a heat dissipation air duct, and the extension direction, the air inlet direction, and the air outlet direction of the heat dissipation air duct are the same. A preset included angle is formed between the extending direction of the heat dissipation air duct and the first air outlet direction of the fan 30; or, the extending direction of the heat dissipation air duct and the extending direction of the heat sink 40 both have a preset included angle with the first air outlet direction of the fan 30.

It should be noted that, the heat sink 40 provided in this embodiment is provided with a heat dissipation air duct, a main air inlet area of the heat sink 40 is formed on a side of the heat dissipation air duct close to the fan 30, and a main air outlet area of the heat sink 40 is formed on a side of the heat dissipation air duct far away from the fan 30. The extending direction of the heat dissipation air channel located in the air inlet area and the air outlet area is the same as the extending direction of the whole heat dissipation air channel, so that the extending direction of the heat dissipation air channel, the air inlet direction and the air outlet direction are consistent, the arrangement can ensure that air flow smoothly flows through the heat dissipation air channel, the heat dissipation air channel is prevented from blocking the air flow, the flow and the flow speed of the air flow passing through the heat dissipation air channel are improved, and the air flow can convey heat around the heat radiator 40 to the outside of the accommodating cavity 13 in time.

In this embodiment, a preset included angle is further defined between the extending direction of the heat dissipation air duct and the first air outlet direction of the fan 30; or, the extending direction of the heat dissipation air duct and the extending direction of the heat sink 40 both have a preset included angle with the first air outlet direction of the fan 30, and such arrangement can ensure that most of the air flow output by the fan 30 flows through the heat dissipation air duct.

Specifically, the heat sink 40 includes a heat dissipation plate disposed on the circuit board assembly 20 and a plurality of heat dissipation fins 41 disposed on the heat dissipation plate and parallel to each other, and a heat dissipation air duct is formed between adjacent heat dissipation fins 41. The extending direction of the heat dissipating fins 41 and the first air outlet direction of the fan 30 form a preset included angle; or, the extending direction of the heat dissipation plate and the extending direction of the heat dissipation fins 41 both have a preset included angle with the first air outlet direction of the fan 30.

It should be noted that the heat dissipation plate may be detachably connected to the circuit board assembly 20, or may be disposed on the circuit board assembly 20 by bonding or welding, and the heat dissipation plate has a higher heat conduction performance, so that the heat dissipation plate is attached to the circuit board assembly 20, and the heat on the circuit board assembly 20 can be transferred to the heat dissipation plate in time. Further, a plurality of heat dissipating fins 41 are provided in parallel to each other on the heat dissipating plate, and the heat dissipating air duct described above is formed between the adjacent heat dissipating fins 41. On one hand, the heat dissipation fins 41 can increase the heat exchange area between the heat dissipation plate and the wind flow, and on the other hand, the heat dissipation air duct formed by the heat dissipation fins 41 can also guide the wind flow, so that the heat dissipation efficiency of the circuit board assembly 20 is increased by using the heat dissipation plate and the heat dissipation fins 41.

In order to increase the flow rate of the air flow on the heat sink 40, as an implementation manner, when the setting space on the accommodating cavity 13 or the circuit board assembly 20 is sufficient, the extending direction of the heat dissipation plate and the extending direction of the heat dissipation fins 41 may be set to have a preset included angle with the first air outlet direction of the fan 30. When the setting space on the accommodating cavity 13 or the circuit board assembly 20 is limited, only the extending direction of the heat dissipating fins 41 on the heat dissipating plate may be set to have a predetermined included angle with the first air outlet direction of the fan 30. In practical use, a user may selectively use any one of the two arrangements according to the requirement of the accommodating cavity 13 or the arrangement space of the circuit board assembly 20, and the embodiment is not limited thereto.

Further, the minimum distance between the side of the heat sink 40 close to the fan 30 and the fan 30 is in the range of 2-40 mm. In order to ensure a safe and stable installation gap between the heat sink 40 and the fan 30, the present embodiment limits the minimum distance between the two to be not less than 2mm, and when the installation stability of the fan 30 is poor, the possibility of interference between the rotation of the fan 30 and the heat sink 40 can be reduced, but if the minimum distance between the two is too large, although the average included angle between each heat dissipation fin 41 and the front wind flow is reduced, the wind flow generated by the fan 30 needs to flow through a longer distance to contact the heat sink 40, so that a great amount of wind flow energy is lost on the flow path, and the heat dissipation efficiency is reduced. In practical use, the user may select a specific value of the minimum distance between the side of the heat sink 40 close to the fan 30 and the fan 30 within the above range according to the requirement of the installation space in the accommodating cavity 13, which is not limited in this embodiment.

As an implementation manner, the heat dissipation plate and the heat dissipation fins 41 may be made of a material with excellent heat conductivity, such as a metal member, a heat conductive ceramic, or a heat conductive rubber, which is not limited by the embodiment.

Specifically, referring to fig. 3, at least a portion of the extending direction of the circuit board assembly 20 and the first air outlet direction of the fan 30 have a predetermined included angle.

It should be noted that, based on the restriction of the setting space in the accommodating cavity 13, the one end of the circuit board assembly 20 of this embodiment is close to the fan 30 and is set up, the other end extends towards the one side of keeping away from the fan 30, the extending direction of at least part of the circuit board assembly 20 and the first air-out direction of the fan 30 have a preset included angle, specifically, the one side of the circuit board assembly 20 close to can be set up to have a preset included angle with the first air-out direction, thereby increasing the air volume and the air speed flowing through the circuit board assembly 20, and improving the heat dissipation.

As an achievable embodiment, the predetermined angle is in the range of 10-30 °.

It should be noted that, based on the main air outlet area of the fan 30 in this embodiment is defined by the first air guiding section 51, a large amount of air flow is mainly concentrated on the air outlet area, and has a predetermined included angle with the first air outlet direction. Therefore, when the preset included angle is too small, the wind flow is blocked by the first end of the first wind guiding section 51 and cannot contact the circuit board assembly 20. When the value of the preset included angle is too large, the arrangement position of the circuit board assembly 20 is too close to the position of the coil panel 60, which not only can not contact the main wind flow of the fan 30, but also influences the stable arrangement of the coil panel 60.

Through experimental comparison, under the same experimental conditions, compared with the preset included angle range of 10-30 degrees, the preset included angle range of the embodiment is set within 10-30 degrees, and the temperature of the heat dissipation fins 41 on the circuit board assembly 20 is reduced by 5-10 ℃. In practical use, a user may select a specific value of the preset included angle within the above range according to a requirement and a limitation of a setting space in the accommodating cavity 13, which is not limited in this embodiment.

In the electromagnetic oven of the present embodiment, the accommodating chamber 13 has a first side wall 14, a second side wall 15, a third side wall 16 and a fourth side wall 17 which are connected in sequence, the fan 30 is close to the connection of the first side wall 14 and the fourth side wall 17, and the circuit board assembly 20 is located between the fan 30 and the second side wall 15 and extends toward the second side wall 15.

The circuit board assembly 20 includes a first extension 21 and a second extension 22 connected to each other, the first extension 21 is adjacent to the first side wall 14, and the second extension 22 is adjacent to the second side wall 15.

The radiator 40 is located at an end portion of the first extending section 21 close to the side of the fan 30, and a preset included angle is formed between an extending direction of the first extending section 21 and a first air outlet direction of the fan 30.

It should be noted that the accommodating cavity 13 provided in this embodiment may be square or quasi-square, and has a first side wall 14, a second side wall 15, a third side wall 16, and a fourth side wall 17 connected in sequence. The fan 30 is located at a corner of the accommodating cavity 13 near the joint of the first side wall 14 and the fourth side wall 17, and the fan 30 is located at the corner, so that the wind flow generated by the fan 30 can flow through more areas in the accommodating cavity 13, and the area of the dead angle through which the wind flow flows is reduced. The lamp plate can be close to first lateral wall 14 setting, and when using, first lateral wall 14 is towards user one side to be convenient for the user to control the operation on the lamp plate.

The circuit board assembly 20 is disposed between the blower 30 and the second sidewall 15 and includes a first extension 21 and a second extension 22 connected to each other, wherein the first extension 21 is disposed adjacent to the blower 30 and the first sidewall 14, and the second extension 22 is disposed adjacent to the second sidewall 15. Based on the configuration structure of the circuit board assembly 20, the first extension section 21 may be configured with an electronic component with a larger heating power on the circuit board assembly 20, such as a bridge stack and an IGBT (Insulated Gate Bipolar Transistor), so that the electronic component is in contact with the wind flow generated by the fan 30 in time, and the heat dissipation effect is enhanced. Correspondingly, the second extension section 22 can be provided with electronic components with smaller heating power on the circuit board assembly 20, and the arrangement space of the circuit board assembly 20 can be effectively utilized through the arrangement, so that the arrangement positions of the electronic components with different heating powers can be reasonably arranged, and the heat dissipation efficiency of the circuit board assembly 20 can be improved.

To ensure that the heat sink 40 and the electronic components on the first extension section 21 contact more wind, the extension direction of the first extension section 21 may be set to have a predetermined angle with the first wind outlet direction of the fan 30. While the second extension 22 is maintained at the side close to the second sidewall 15, it is possible to prevent the second extension 22 from affecting the stability of the arrangement of the coil disk 60.

Further, referring to fig. 2, the wind deflector 50 includes a second wind guiding section 52 at least partially disposed on an edge of a side wall of the circuit board assembly 20 close to the accommodating cavity 13, the second wind guiding section 52 extends from a side close to the fan 30 to the second side wall 15, and an end of the second wind guiding section 52 close to the fan 30 is connected to a first end of the first wind guiding section 51.

The first wind guiding section 51 is located between the fan 30 and the fourth side wall 17, the second wind guiding section 52 is located at the edge of the first extending section 21 close to one side of the side wall of the accommodating cavity 13, and the extending direction of the second wind guiding section 52 and the first wind outlet direction of the fan 30 form a preset included angle.

It should be noted that, during the operation of the fan 30, the wind flow generated by the fan 30 flows toward the area where the circuit board assembly 20 and the coil panel 60 are located under the guiding action of the first wind guiding section 51, wherein the second wind guiding section 52 located on one side of the circuit board assembly 20 close to the inner wall of the accommodating cavity 13 can block the wind flow from flowing over the circuit board assembly 20 and toward the inner wall of the accommodating cavity 13, so that the wind flow is concentrated on the area where the circuit board assembly 20 is located.

The extending direction of the second wind guiding section 52 and the first wind outlet direction can have a preset included angle, so that the wind flow direction flowing along the second wind guiding section 52 and the extending direction of the first extending section 21 can be kept consistent, the flow resistance of wind flow is reduced, the wind flow rate and the wind speed of the first extending section 21 of the circuit board assembly 20 are improved, and the heat dissipation effect of the circuit board assembly is enhanced.

In an implementation, the extending direction of the second wind guiding section 52 near the side of the heat sink 40 is parallel to the extending direction of the heat dissipating fins 41 of the heat sink 40. The end of the second wind guiding section 52 close to the side of the fan 30 may be flush with the end of the radiator 40 close to the side of the fan 30, so that the second wind guiding section 52 limits the flow direction of the wind flow to ensure that more wind flows through the heat dissipating air duct of the radiator 40. And the extending direction of the second wind guiding section 52 is parallel to the radiating fins 41 of the radiator 40, so that a structure for blocking the wind flow is prevented from being formed between the second wind guiding section 52 and the radiating fins 41, thereby preventing the wind flow from forming a large amount of eddy currents, and reducing the air flow loss and the flow resistance of the wind flow.

As an achievable embodiment, the end portion of the second air guiding section 52 close to the second side wall 15 abuts against the second side wall 15, and such an arrangement can avoid a gap between the end portion of the second air guiding section 52 close to the second side wall 15 and the second side wall 15, thereby preventing the air flow from leaking outside at the abutting position of the second air guiding section 52 and the second side wall 15, improving the air flow rate on the circuit board assembly 20, and ensuring the heat dissipation efficiency thereof.

As shown in fig. 3, an included angle between the extending direction of the second wind guiding section 52 and the extending direction of the second side wall 15 is greater than 90 °, so that the area of a corner region where the end of the second wind guiding section 52 close to the second side wall 15 abuts against the second side wall 15 can be increased, and the size of a vortex formed by wind flow in the corner region can be reduced, as can be seen from fig. 1, the included angle between the extending direction of the second wind guiding section 52 and the extending direction of the second side wall 15 is greater than 90 °, so that the wind flow vortex therein can be effectively reduced, wind resistance is reduced, and wind speed and wind volume are increased, so that more wind flow can flow through the corner region and enter the second extending section 22 of the circuit board assembly 20.

In an implementation manner, a third wind guiding section 53 is further connected between the first wind guiding section 51 and the second wind guiding section 52, the third wind guiding section 53 is close to the first side wall 14, and the third wind guiding section 53 extends along the first wind outlet direction of the fan 30.

An air inlet 11 is arranged on one side of the bottom wall of the bottom shell 10 close to the fan 30, and an air outlet 12 is arranged on one side of the second side wall 15 close to the third side wall 16 and/or on the third side wall 16.

The air deflector 50 includes a fourth air guiding section 54, the third side wall 16 is provided with the air outlet 12, the fourth air guiding section 54 is located between the fan 30 and the fourth side wall 17, one end of the fourth air guiding section 54 is connected with the first air guiding section 51, and the other end of the fourth air guiding section 54 extends to the air outlet 12 on the third side wall 16.

When the distance between the fan 30 and the circuit board assembly 20 is large, the third air guiding section 53 may be provided at a joint between the first air guiding section 51 outside the fan 30 and the second air guiding section 52 on the side of the circuit board assembly 20, and the third air guiding section 53 may extend in the first air outlet direction, and may assist the air guiding function of the second air guiding section 52. When the air flows from the outlet of the outlet area limited by the first air guiding section 51, the air flows along the extending direction of the third air guiding section 53, and then flows to the position of the second air guiding section 52, so as to improve the guiding effect of the air flow. The length of the third wind guiding section 53 can be selected according to the specific value of the distance between the fan 30 and the circuit board assembly 20, which is not limited in this embodiment.

The fourth wind guide section 54 is arranged between the fan 30 and the fourth side wall 17, and based on that the coil panel 60 is located in the middle area of the accommodating cavity 13 and the circuit board assembly 20 is arranged close to the second side wall 15, the wind flow needs to flow towards the middle area of the accommodating cavity 13 and the side close to the second side wall 15, and the fourth wind guide section 54 is arranged on the side of the fourth side wall 17, so that the wind flow generated by the fan 30 can be prevented from being gathered on the side close to the fourth side wall 17, and the wind flow flowing to the side of the coil panel 60 and the circuit board assembly 20 is increased.

Correspondingly, based on the present embodiment, taking the fan 30 as an axial flow fan as an example for description, the bottom wall of the bottom case 10 is provided with an air inlet 11 on a side close to the fan 30, so as to form a bottom air inlet and side air outlet airflow flowing mode of the fan 30. Moreover, based on the corner region where the fan 30 is disposed at the joint of the first sidewall 14 and the fourth sidewall 17, the air outlet 12 is disposed at one side of the second sidewall 15 close to the third sidewall 16 and/or the third sidewall 16, so that the air flow can be ensured to flow along the general directions of the first sidewall 14 to the third sidewall 16 and the fourth sidewall 17 to the second sidewall 15 in the accommodating cavity 13, thereby forming a smooth air flow path, reducing the flow resistance of the air flow, and improving the flow speed of the air flow.

The embodiment of the utility model provides an induction cooker sets up fan and circuit board assembly through the holding intracavity that encloses at drain pan and panel, utilizes the fan to dispel the heat to circuit board assembly. Through being close to fan one side on circuit board subassembly and setting up the radiator, utilize the heat exchange effect between the air current of radiator reinforcing circuit board subassembly and fan, and set up to the same through the air inlet direction and the air-out direction with the radiator, and all have the predetermined contained angle with first air-out direction, can guarantee that the air current of fan flows through the radiator smoothly, reduce the vortex that the air current produced, improve the wind speed and the amount of wind that the air current flows, optimize the radiating efficiency of circuit board subassembly and electromagnetism stove, guarantee job stabilization nature and high efficiency.

Example two

Fig. 4 is a schematic structural diagram of the inside of an induction cooker according to the second embodiment of the present invention. Fig. 5 is a top view of the inside of an induction cooker according to the second embodiment of the present invention. Referring to fig. 4 and 5, on the basis of the first embodiment, a second embodiment of the present invention further provides an induction cooker, and compared with the first embodiment, the difference between the first embodiment and the second embodiment is: the second air guiding section 52 of the air guiding plate 50 has a different structure from the abutting portion of the second side wall 15.

Specifically, the end of the second wind guiding section 52 close to the second side wall 15 abuts against the second side wall 15, and an arc-shaped transition section 55 is provided.

It should be noted that, compared with the first embodiment, the abutting part of the end part of the second wind guiding section 52 close to the second side wall 15 and the second side wall 15 is connected by the fold-line-shaped transition structure, the arc-shaped transition section 55 of the first embodiment can effectively reduce the resistance when the wind flows through, so as to weaken the vortex of the wind flow, reduce the resistance and the air flow loss of the wind flow, thereby improving the flow rate and the flow velocity of the wind flow, and optimizing the heat dissipation effect.

In practical use, the radius of curvature of the curved transition section 55 may be set according to the space requirement at the abutting position of the end portion of the second wind guiding section 52 close to the second side wall 15 and the second side wall 15, which is not limited in this embodiment.

Other technical features are the same as those of the first embodiment and can achieve the same technical effects, and are not described in detail herein.

The embodiment of the utility model provides an electromagnetism stove that second provides sets up fan and circuit board assembly through the holding intracavity that encloses at drain pan and panel, utilizes the fan to dispel the heat to circuit board assembly. Through being close to fan one side on circuit board subassembly and setting up the radiator, utilize the heat exchange effect between the air current of radiator reinforcing circuit board subassembly and fan, and set up to the same through the air inlet direction and the air-out direction with the radiator, and all have the predetermined contained angle with first air-out direction, can guarantee that the air current of fan flows through the radiator smoothly, reduce the vortex that the air current produced, improve the wind speed and the amount of wind that the air current flows, optimize the radiating efficiency of circuit board subassembly and electromagnetism stove, guarantee job stabilization nature and high efficiency.

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 (13)

1. The utility model provides an induction cooker, includes drain pan (10), circuit board assembly (20), fan (30) and is located panel on drain pan (10), drain pan (10) with the panel encloses into jointly and can hold circuit board assembly (20) with holding chamber (13) of fan (30), its characterized in that, one side that is close to fan (30) on circuit board assembly (20) is provided with radiator (40), the air inlet direction and the air-out direction of radiator (40) are the same, and all with the first air-out direction of fan (30) has and predetermines the contained angle.

2. The induction cooker according to claim 1, wherein the heat sink (40) has a heat dissipation air duct, and the extension direction, the air inlet direction and the air outlet direction of the heat dissipation air duct are the same;

the extending direction of the heat dissipation air duct and the first air outlet direction of the fan (30) form the preset included angle; or the extending direction of the heat dissipation air duct and the extending direction of the radiator (40) are both in the preset included angle with the first air outlet direction of the fan (30).

3. The induction hob according to claim 2, characterized in, that at least a part of the circuit board assembly (20) extends in a direction having a predetermined angle with the first air outlet direction of the fan (30).

4. The induction cooker according to any one of claims 1 to 3, characterized in that a wind deflector (50) is disposed in the accommodating cavity (13), the wind deflector (50) comprises a first wind guiding section (51) at least partially surrounding the periphery of the fan (30), and a wind outlet area of the fan (30) is formed between two ends of the first wind guiding section (51);

the first end of the first air guide section (51) is close to one side of the circuit board assembly (20), and the tangential direction of the first end of the first air guide section (51) on the periphery of the fan (30) forms the first air outlet direction.

5. The induction hob according to claim 4, characterized in that the receiving cavity (13) has a first side wall (14), a second side wall (15), a third side wall (16) and a fourth side wall (17) which are connected in sequence, the fan (30) is close to the connection of the first side wall (14) and the fourth side wall (17), and the circuit board assembly (20) is located between the fan (30) and the second side wall (15) and extends towards the second side wall (15).

6. The induction hob according to claim 4, characterized in, that the preset included angle is in the range of 10-30 °.

7. The induction cooker according to claim 2 or 3, wherein the heat sink (40) comprises a heat dissipation plate disposed on the circuit board assembly (20) and a plurality of heat dissipation fins (41) disposed on the heat dissipation plate and parallel to each other, and the heat dissipation air duct is formed between adjacent heat dissipation fins (41);

the extending direction of the radiating fins (41) and the first air outlet direction of the fan (30) form the preset included angle; or the extending direction of the heat dissipation plate and the extending direction of the heat dissipation fins (41) are both provided with the preset included angle with the first air outlet direction of the fan (30).

8. The induction cooking hob according to claim 5, characterized in, that the circuit board assembly (20) comprises a first extension (21) and a second extension (22) connected to each other, the first extension (21) being adjacent to the side of the first side wall (14) and the second extension (22) being adjacent to the side of the second side wall (15);

radiator (40) are located being close to of first extension section (21) the tip of fan (30) one side, the extending direction of first extension section (21) with the fan first air-out direction has the preset contained angle.

9. The induction cooking stove according to claim 8, characterized in that the air deflector (50) comprises a second air deflecting section (52) at least partially disposed at an edge of a side wall of the circuit board assembly (20) close to the accommodating cavity (13), the second air deflecting section (52) extends from a side close to the fan (30) to the second side wall (15), and an end of the second air deflecting section (52) close to the fan (30) is connected to a first end of the first air deflecting section (51);

first wind-guiding section (51) are located fan (30) with between fourth lateral wall (17), second wind-guiding section (52) are located first extending section (21) are close to the edge of the lateral wall one side of holding chamber (13), just the extending direction of second wind-guiding section (52) with fan (30) first air-out direction has predetermine the contained angle.

10. The induction hob according to claim 9, characterized in, that the end of the second wind guiding section (52) close to the second side wall (15) abuts the second side wall (15);

the extending direction of the second wind guide section (52) and the extending direction of the second side wall (15) form an included angle larger than 90 degrees.

11. The induction hob according to claim 9, characterized in, that the end of the second wind guiding section (52) close to the second side wall (15) has an arc-shaped transition section (55) at the abutment with the second side wall (15).

12. The induction cooker according to claim 9, characterized in that a third air guiding section (53) is further connected between the first air guiding section (51) and the second air guiding section (52), the third air guiding section (53) is close to one side of the first side wall (14), and the third air guiding section (53) extends along the first air outlet direction of the fan (30);

an air inlet (11) is formed in one side, close to the fan (30), of the bottom wall of the bottom shell (10), and an air outlet (12) is formed in one side, close to the third side wall (16), of the second side wall (15) and/or the third side wall (16);

the air deflector (50) comprises a fourth air guiding section (54), the air outlet (12) is formed in the third side wall (16), the fourth air guiding section (54) is located between the fan (30) and the fourth side wall (17), one end of the fourth air guiding section (54) is connected with the first air guiding section (51), and the other end of the fourth air guiding section (54) extends to the air outlet (12) in the third side wall (16).

13. The induction cooker according to claim 9, wherein the second wind guiding section (52) on the side close to the heat sink (40) extends in parallel with the extending direction of the heat dissipating fins (41) of the heat sink (40).

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