CN209310058U - Electromagnetic oven - Google Patents

Abstract

The utility model provides an induction cooker, which comprises a bottom shell (1) and a panel (2) positioned on the bottom shell (1), wherein a heat radiation fan (5), a coil panel (3) and a circuit board assembly (4) are arranged in the inner cavity of the bottom shell (1), an air inlet hole (120) and an air outlet hole (110) are arranged on the bottom shell (1), and the air inlet hole (120) is arranged on the side wall of the bottom shell (1) facing a user; be provided with between coil panel (3) and cooling fan (5) and keep off muscle (8), keep off the clearance (a) scope between the top of muscle (8) and the lower surface of panel (2) and be 3mm ~ 20mm to can avoid desktop ponding by the suction drain pan in, and improve the radiating effect.

Description

Electromagnetic oven

Technical field

The utility model relates to field of home appliance technology more particularly to a kind of electromagnetic ovens.

Background technique

Electromagnetic oven has many advantages, such as to heat quick, the flames of anger, smoke dust, safe ready, increasingly by the blueness of consumer It looks at and approves.

Electromagnetic oven specifically includes that bottom case, the panel on bottom case, the coil panel in bottom case inner cavity, circuit board group Part and cooling fan；Wherein, coil panel and circuit board assemblies etc. are main heater element, and cooling fan is used for as fever member Part heat dissipation.Air inlet hole and exhaust vent are offered on bottom case, air inlet hole is specifically provided on the bottom wall of bottom case, and air inlet hole is positioned at scattered The underface of air-heater.When electromagnetic oven works, cooling wind outside electromagnetic oven cooling fan effect from bottom case bottom wall Air inlet hole enters in bottom case, and the heat of the heater elements such as coil panel, circuit board is taken away, then exhaust vent of the hot wind from bottom case Outside blowout to electromagnetic oven, to realize the heat dissipation of electromagnetic oven.

However, the bottom wall of bottom case is apart from table since the air inlet hole of the electromagnetic oven of the prior art is provided on the bottom wall of bottom case Face is closer, and especially for the electromagnetic oven of thin in profile, the space of bottom wall to desktop is especially narrow, cooling fan work When, it is easy for the ponding etc. on desktop to be sucked into bottom case inner cavity, the electronic device in bottom case is caused to meet water dampness or occur The phenomenon of short circuit occurs, and then leads to electromagnetic oven damage and the generation of unsafe accident.

Utility model content

In order to solve the problems, such as at least one mentioned in background technique, the utility model provides a kind of electromagnetic oven, can keep away Exempt from desktop ponding to be inhaled into bottom case, and improves heat dissipation effect.

To achieve the goals above, the utility model provides a kind of electromagnetic oven, including bottom case and is located on the bottom case Panel, cooling fan, coil panel and circuit board assemblies are equipped in the inner cavity of the bottom case, offer air inlet hole on the bottom case And exhaust vent, the air inlet hole are provided on the user oriented side wall of the bottom case；

Block reinforcement, the following table on the top of the block reinforcement and the panel are provided between the coil panel and the cooling fan Interstice coverage between face is 3mm~20mm.

The electromagnetic oven of the utility model, by the way that all air inlet holes are provided on the user oriented side wall of bottom case, that is, only Air inlet hole is opened up in the leading flank of electromagnetic oven bottom shell, compared with prior art, since the air inlet hole in the utility model is far from wind Machine pressure area, distance of the air inlet hole apart from desktop is higher than the position of bottom case bottom wall, and at air inlet hole inside and outside leeway it is smaller, To which the ponding of desktop when can avoid electromagnetic oven work is sucked into the generation of the situation in bottom case, electronics device in electromagnetic oven is extended The service life of part avoids the generation of unsafe accident.Moreover, if overflowing pot phenomenon occurs in cooking process, only due to air inlet hole It being provided on the user oriented side wall of bottom case, that is, air inlet hole is arranged close to operating area (i.e. on front side of electromagnetic oven), that is, It says, is placed on the cookware on electromagnetic oven panel apart from air inlet hole farther out, even if overflowing pot phenomenon, the soup overflowed in cookware occurs Also it is not easy to flow into bottom case inner cavity from air inlet hole, effective protection further has been carried out to the device in electromagnetic oven, has avoided uneasiness The generation of full accident.Meanwhile by the way that block reinforcement is arranged between coil panel and cooling fan, make cooling fan blows effect more It is good, and cooling wind can be flowed to by preset path, moreover, because in electromagnetic oven work, the heat of circuit board assemblies sending Bigger, i.e., coil panel is than the devices heatproof such as circuit board assemblies, in order to guarantee to have enough allocation of the amount of air to send out to circuit board assemblies etc. The bigger device of heat, by by the gap setting between the top of block reinforcement and the lower surface of panel between 3mm~20mm, That is, making the gap between block reinforcement and panel will not be very big, air quantity limitation be carried out to coil panel, to distribute more air quantity to circuit board Component guarantees to not only ensure that part wind blows to coil panel from the gap between the top and panel of block reinforcement to coil Effective heat dissipation of disk, while thering are enough air quantity to blow to the bigger device of the calorific values such as circuit board assemblies, to circuit board assemblies etc. It is effectively radiated, so that cooling wind be enable more preferably to utilize, improves the integral heat sink effect of electromagnetic oven.

Optionally, the gap between the top of the block reinforcement and the lower surface of the panel is 12mm.

By gap setting in 12mm, the heat dissipation effect of coil panel and circuit board assemblies is more preferable.

Optionally, the block reinforcement extends between the coil panel and the circuit board assemblies；

When the circuit board assemblies include circuit board and radiator, the radiator is arranged close to the cooling fan, institute Block reinforcement is stated to extend between the coil panel and the radiator.

By extending to block reinforcement between coil panel and circuit board assemblies, coil panel and circuit can be reduced to a certain extent Heat radiation between board group part avoids the heat of the two from influencing each other；In addition, block reinforcement extends between coil panel and radiator, It is further ensured that the circuit board of circuit board assemblies and enough cooling air-flows can be obtained positioned at the radiator of circuit front edge of board, into One step improves heat dissipation effect.

Optionally, the exhaust vent is provided on the side wall opposite with the air inlet hole of the bottom case, and/or, it is described Exhaust vent is provided with the side far from the air inlet hole of the bottom wall of the bottom case.

By the way that exhaust vent is provided on the side wall opposite with air inlet hole of bottom case, and/or, it is provided with the bottom wall of bottom case Far from air inlet hole side, that is, all exhaust vents are provided with the rear portion of electromagnetic oven, do not opened up on the wall of electromagnetic oven bottom shell two sides into Air holes does not also open up exhaust vent, that is to say, that the electromagnetic oven is air exhausting structure after advancing air, the cooling wind outside electromagnetic oven After entering bottom case inner cavity from air inlet hole under the action of cooling fan, wind cannot not open up the position blowout of exhaust vent from other, Can only be blown out from the exhaust vent far from air inlet hole is concentrated on so that the whole flow direction in the air duct of electromagnetic oven for from bottom case inner cavity from Front makes air duct flow direction substantially in a straight line, reduces the bend pressure loss of air-flow toward rear portion, makes to be formed in electromagnetic oven larger Wind pressure, concentrate the air quantity for blowing to heater element more, wind speed is bigger, to improve the heat dissipation effect of electromagnetic oven.Moreover, if Overflowing pot phenomenon occurs in cooking process, when the soup flowed out out of cookware is flowed down from bottom case two sides, due on the wall of bottom case two sides Air inlet hole and exhaust vent are not opened up, and therefore, soup will not enter in bottom case inner cavity；Since air inlet hole is only provided with the face of bottom case To on the side wall of user, that is, air inlet hole is close to operating area (i.e. on front side of electromagnetic oven) setting, that is to say, that is placed on electromagnetic oven Farther out apart from air inlet hole, even if overflowing pot phenomenon occurs, the soup overflowed in cookware is also not easy from air inlet cookware on panel Hole flows into bottom case inner cavity, has further carried out effective protection to the device in electromagnetic oven, has avoided the generation of unsafe accident.

Optionally, there is wind screen rib, the inner cavity of the bottom case is divided by the wind screen rib to pacify in the inner cavity of the bottom case Fill the second chamber of the cooling fan, the first chamber of the coil panel and the circuit board assemblies and mountable lamp plate；

The air inlet hole is provided on the user oriented side wall of the second chamber；

The ventilation opening for being connected to the second chamber and the first chamber is offered on the wind screen rib.

By the way that wind screen rib is arranged, air inlet hole is provided on the user oriented side wall of second chamber, so that bottom case inner cavity Formation temperature height opposite cold wind chamber and hot air cavity, while ventilation opening is opened up on wind screen rib, so that enter from air inlet hole Cooling wind can swimmingly enter at cooling fan by ventilation opening, ensure that the air quantity for blowing to heater element, make cooling wind It is effectively used, further improves heat dissipation effect；When due to electromagnetic oven work, the heat that is equipped in the second chamber of lamp plate Very little is measured, air inlet hole is provided with second chamber, so that the cooling wind temperature for entering to first chamber from second chamber is lower, from And further improve heat dissipation effect.

Optionally, the ventilation opening is provided with being disposed around on the part of the cooling fan periphery of the wind screen rib.

Setting is so that air inlet is more smooth in this way.

Optionally, air inlet hole described in the ventilation opening face is arranged.

In this way setting so that the cooling wind entered from air inlet hole to flow through route substantially rectilinear, reduce delay resistance, Enable cooling wind more quickly, swimmingly reach first chamber, further improve radiating efficiency.

Optionally, the lower surface of the cooling fan is formed as air intake surface, and the upper surface of the cooling fan is formed as Wind face；

The ventilation opening extends to the bottom end of the wind screen rib.

Making cooling fan in this way is that lower part air inlet top outlet air is made by the way that ventilation opening to be extended to the bottom end of wind screen rib The cooling wind that enter from ventilation opening can direct and arrival cooling fan as much as possible air intake surface, and then pass through radiation air Machine is pressurized after-blow to heater element, further improves the speed and smoothness of air inlet.

Optionally, the upper surface of the cooling fan is formed as air intake surface, and the lower surface of the cooling fan is formed as Wind face；

The ventilation opening extends to the top of the wind screen rib.

Making cooling fan in this way is that top air inlet lower part outlet air is made by the way that ventilation opening to be extended to the top of wind screen rib The cooling wind that enter from ventilation opening can direct and arrival cooling fan as much as possible air intake surface, and then pass through radiation air Machine is pressurized after-blow to heater element, further improves the speed and smoothness of air inlet.

Optionally, the lower surface of the cooling fan is formed as air intake surface, and the upper surface of the cooling fan is formed as When wind face, the plane where the top of the ventilation opening is not higher than the plane where the lower surface of the cooling fan.

If the plane where the top of ventilation opening to be set above to the plane where the lower surface of cooling fan, will lead to Part wind may be back in second chamber by cooling fan, and then cause the part wind that can not blow to coil panel, circuit board The heater elements such as component cause the air quantity for blowing to heater element to become smaller, and the utility model passes through where making the top of ventilation opening Plane is lower than plane where the lower surface of cooling fan, or concordant with the plane where the lower surface of cooling fan, to protect Card enters to the intake of first chamber from ventilation opening, further ensures heat dissipation effect.

Optionally, the upper surface of the cooling fan is formed as air intake surface, and the lower surface of the cooling fan is formed as When wind face, the plane where the bottom end of the ventilation opening is not less than the plane where the upper surface of the cooling fan.

If the plane where the bottom end of ventilation opening to be set below to the plane where the upper surface of cooling fan, will lead to Part wind may be back in second chamber by cooling fan, and then cause the part wind that can not blow to coil panel, circuit board Equal heater elements, cause the air quantity for blowing to heater element to become smaller, the utility model passes through the plane where making the top of ventilation opening It is or concordant with the plane where the upper surface of cooling fan higher than plane where the upper surface of cooling fan, thus guarantee from Ventilation opening enters to the intake of first chamber, further ensures heat dissipation effect.

Optionally, the side wall of the bottom case includes: along the sequentially connected the first side wall of circumferential direction of the bottom case, second side Wall, third side wall and the 4th side wall；

The third side wall is oppositely arranged with the first side wall, and the second sidewall is opposite with the 4th side wall to be set It sets；

The first side wall user oriented, the air inlet hole are provided on the first side wall.

Optionally, at least partly described exhaust vent is provided on the third side wall.

The distinguished and admirable path substantially straight type that can be further ensured that in electromagnetism furnace chamber in this way, ensure that wind speed, and make heat The outflow path of wind is more excellent, and outflow is faster.

Optionally, the coil panel, the circuit board assemblies and cooling fan integrally arrangement triangular in shape；

For the coil panel between the cooling fan and the third side wall, the circuit board assemblies are located at described dissipate Between air-heater and the 4th side wall.

Outlet air a part of cooling fan is made to blow to coil panel in this way, a part blows to circuit board assemblies, then hot wind It is directly blown out from the exhaust vent at bottom case rear portion, since exhaust vent is provided with the rear portion of bottom case, positioned at the second sidewall of two sides and the Do not open up exhaust vent on four side walls, the purpose that exhaust vent is not provided in second sidewall be avoid air-flow flow through this side without Effective cooling is generated to circuit board assemblies and coil panel, so as to cause the waste of unnecessary air-flow；It is not opened on the 4th side wall The purpose for setting out air holes is the change that the exhaust vent for avoiding herein can cause air duct path, avoids the quilt of a large amount of first flowing through coil disks The air-flow of heating flows through the rear portion of circuit board assemblies, and the temperature of accumulation makes temperature herein become higher to happen.

Optionally, when having wind screen rib in the inner cavity of the bottom case, the wind screen rib includes sequentially connected first muscle section With the second muscle section；The first muscle section is formed as the part cavity wall of the second chamber, and the second muscle section is disposed around described dissipate The periphery of air-heater；

The wind screen rib further includes third muscle section, and one end of the third muscle section is connect with the second muscle section, and described The other end of three muscle sections extends towards the direction of the third side wall, alternatively, the other end of the third muscle section is towards described the The joint of three side walls and the second sidewall extends.

By the way that third muscle section is arranged, extend third muscle section towards the direction of third side wall or towards third side wall and the The joint of two side walls extends, so that the width of first chamber is reduced, so that the cooling wind for blowing to first chamber is more concentrated, It is more preferable to the heat dissipation effect of heater element.

The construction of the utility model and its other purposes and beneficial effect will be in conjunction with the accompanying drawings to preferred realities Apply the description of example and more obvious and easy to understand.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the overlooking structure figure of the bottom shell for the electromagnetic oven that an embodiment of the present invention provides；

Fig. 2 is the sectional view along A-A in Fig. 1；

Fig. 3 is the three-dimensional structure diagram of the bottom shell for the electromagnetic oven that an embodiment of the present invention provides.

Description of symbols:

1-bottom case；

101-the first side walls；

102-second sidewalls；

103-third side walls；

104-the four side wall；

105-bottom walls；

110-exhaust vents；

120-air inlet holes；

11-first chambers；

12-second chambers；

2-panels；

3-coil panels；

4-circuit board assemblies；

40-radiators；

5-cooling fans；

6-wind screen ribs；

61-the first muscle section；

62-the second muscle section；

63-third muscle sections；

60-ventilation openings；

7-lamp plates；

8-block reinforcements；

A-gap.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Fig. 1 is the overlooking structure figure of the bottom shell for the electromagnetic oven that an embodiment of the present invention provides；Fig. 2 is in Fig. 1 Sectional view along A-A；Fig. 3 is the three-dimensional structure diagram of the bottom shell for the electromagnetic oven that an embodiment of the present invention provides.Reference Shown in Fig. 1 to Fig. 3, the present embodiment provides a kind of electromagnetic ovens.

The electromagnetic oven is specific can include: bottom case 1, panel 2, the coil panel 3 in bottom case 1, circuit board assemblies 4, heat dissipation Blower 5 and lamp plate 7.Wherein, panel 2 is located at the top of bottom case 1, and panel 2 can be ceramic panel, be also possible to glass surface Plate, the utility model are not construed as limiting the material of panel 2.Settable key, indicator light etc. manipulate device and/or show on lamp plate 7 Show device.

Coil panel 3 specifically may include coil plate rail and the coil that is wound around on coil plate rail, and coil is electrically connected with circuit board It connects.In electromagnetic oven work, coil panel 3 and circuit board assemblies 4 are main heater element, and cooling fan 5 is used to be coil panel 3 And the equal heater elements of circuit board assemblies 4 radiate.When being cooked using electromagnetic oven, the cookware for being loaded with food materials is placed on On the panel 2 of electromagnetic oven, electromagnetic oven is given to be powered, that is, the electric current for having high frequency flows through coil on coil panel 3, the magnetic line of force of generation Cookware is cut, so that countless small vortex are formed in the bottom surface of cookware, to heat to cookware.

Wherein, air inlet hole 120 and exhaust vent 110, cooling when electromagnetic oven works, outside electromagnetic oven are offered on bottom case 1 Wind enters in bottom case 1 under the action of cooling fan 5 from air inlet hole 120, after being pressurized by cooling fan, blows to coil panel 3 With circuit board assemblies 4 etc., the heat of the heater elements such as coil panel 3 and circuit board assemblies 4 is taken away, then hot wind is from exhaust vent 110 blowouts, to realize the heat dissipation of electromagnetic oven.

Circuit board assemblies 4 specifically include circuit board and radiator 40.Insulated gate bipolar transistor is typically provided on circuit board Manage electronic components, IGBT and the rectification such as (Insulated Gate Bipolar Transistor, abbreviation IGBT) and rectifier bridge stack The fever of bridge heap is very big, in order to further increase the heat dissipation effect of electronic component, by the way that radiator 40 is arranged, makes radiator 40 and electricity Electronic component contact on the plate of road, the heat that electronic component issues quickly is transferred to radiator 40, by radiator 40 by heat It distributes.

Since the air inlet hole of the electromagnetic oven of the prior art is arranged on the bottom wall of bottom case, the cooling wind outside electromagnetic oven is dissipating Entered in bottom case under the action of air-heater by the air inlet hole on the bottom wall of bottom case, but the bottom wall of bottom case is closer apart from desktop, Especially for the electromagnetic oven of thin in profile, the space of bottom wall to desktop is especially narrow, when cooling fan works, is easy table Ponding etc. on face is sucked into bottom case inner cavity, and the electronic device in bottom case is caused to meet water dampness or cause short circuit out It is existing, lead to electromagnetic oven damage and the generation of unsafe accident.Based on this, in the present embodiment, air inlet hole 120 is specifically provided with On the user oriented side wall of bottom case 1, it is to be understood that when user is normally cooked using electromagnetic oven, bottom case 1 close and That user oriented side wall is the side wall for opening up air inlet hole 120, that is, the front side wall of electromagnetic oven.

By the way that all air inlet holes 120 are provided on the user oriented side wall of bottom case 1, that is, only in electromagnetic oven bottom shell 1 Leading flank opens up air inlet hole 120, compared with prior art, since the air inlet hole 120 in the utility model is far from blower pressure area, Distance of the air inlet hole 120 apart from desktop is higher than the position of 1 bottom wall 105 of bottom case, and at air inlet hole 120 inside and outside leeway compared with It is small, so that the ponding of desktop is sucked into the generation of the situation in bottom case 1 when can avoid electromagnetic oven work, extend electric in electromagnetic oven The service life of sub- device avoids the generation of unsafe accident.Moreover, if overflowing pot phenomenon occurs in cooking process, due to air inlet Hole 120 is only provided on the user oriented side wall of bottom case 1, that is, air inlet hole 120 is set close to operating area (i.e. on front side of electromagnetic oven) It sets, that is to say, that the cookware on electromagnetic oven panel is placed on apart from air inlet hole 120 farther out, even if overflowing pot phenomenon occurs, from cookware In the soup that overflows also be not easy to flow into 1 inner cavity of bottom case from air inlet hole 120, further had to the device in electromagnetic oven Effect protection, avoids the generation of unsafe accident.

Meanwhile block reinforcement 8 is provided between the coil panel 3 in the present embodiment and cooling fan 5, the presence of block reinforcement 8 can make to dissipate The effect that blows of air-heater 5 is more preferable, and cooling wind can be flowed to by preset path.The cooling wind in bottom case 1 is entered to, is passed through After cooling fan 5 is pressurized, a part of cooling wind directly blows to coil panel 3 from the gap a between 2 lower surface of block reinforcement 8 and panel, is Coil panel 3 radiates, and the circuit board assemblies 4 that another part cooling wind blows to bottom case 1 wait other devices.

In electromagnetic oven work, the heat that circuit board assemblies 4 issue is bigger, that is, coil panel 3 is than devices such as circuit board assemblies 4 Part heatproof, in order to guarantee to have enough allocation of the amount of air to circuit board assemblies 4, in the present embodiment, the top of block reinforcement 8 and panel 2 Lower surface between the range of gap a may be provided between 3mm~20mm, that is to say, that make between block reinforcement 8 and panel 2 What gap a was done will not be very big, carries out air quantity limitation to coil panel 3, to distribute more air quantity to calorific values such as circuit board assemblies 4 more Big device is protected to not only ensure that part wind blows to coil panel 3 from the gap a between the top and panel 2 of block reinforcement 8 Effective heat dissipation to coil panel 3 is demonstrate,proved, while there are enough air quantity to blow to circuit board assemblies 4, circuit board assemblies 4 are effectively dissipated Heat improves the integral heat sink effect of electromagnetic oven so that cooling wind be enable more preferably to utilize.

Electromagnetic oven provided in this embodiment, by the user oriented side wall that all air inlet holes 120 are provided with to bottom case 1 On, that is, air inlet hole 120 only is opened up in the leading flank of electromagnetic oven bottom shell 1, compared with prior art, due in the utility model Air inlet hole 120 is far from blower pressure area, and distance of the air inlet hole apart from desktop is higher than the position of bottom case bottom wall 105, and air inlet hole Leeway inside and outside at 120 is smaller, so that the ponding of desktop is sucked into the hair of the situation in bottom case 1 when can avoid electromagnetic oven work It is raw, the service life of electronic device in electromagnetic oven is extended, the generation of unsafe accident is avoided.Moreover, if being sent out in cooking process Raw overflowing pot phenomenon, since air inlet hole 120 is only provided on the user oriented side wall of bottom case 1, that is, air inlet hole is close to operating area (i.e. electromagnetic oven on front side of) setting, that is to say, that the cookware on electromagnetic oven panel is placed on apart from air inlet hole 120 farther out, even if hair Raw overflowing pot phenomenon is also not easy to flow into 1 inner cavity of bottom case from air inlet hole 120, further to electromagnetism from the soup overflowed in cookware Device in furnace has carried out effective protection, avoids the generation of unsafe accident.Meanwhile by coil panel 3 and cooling fan 5 it Between be arranged block reinforcement 8, keep the effect that blows of cooling fan 5 more preferable, and cooling wind can be flowed to by preset path, moreover, because In electromagnetic oven work, the heat that circuit board assemblies 4 issue is bigger, i.e., coil panel 3 is than devices heatproofs such as circuit board assemblies 4 Guarantee the device for there are enough allocation of the amount of air bigger to calorific values such as circuit board assemblies 4, by by the top of block reinforcement 8 and panel Gap a between 2 lower surface is arranged between 3mm~20mm, that is, and make the gap a between block reinforcement 8 and panel 2 will not be very big, Air quantity limitation is carried out to coil panel 3, to distribute more air quantity to circuit board assemblies 4, to not only ensure that part wind from gear Gap a between the top and panel 2 of muscle 8 blows to coil panel 3, guarantees effective heat dissipation to coil panel 3, while having enough wind Amount blows to circuit board assemblies 4, is effectively radiated to circuit board assemblies 4, so that cooling wind be enable more preferably to utilize, improves electricity The integral heat sink effect of magnetic furnace.

In the present embodiment, specifically 12mm can be set by the gap a between the top of block reinforcement 8 and the lower surface of panel 2. Under the gap size, the heat dissipation effect of coil panel 3 and circuit board assemblies 4 is more preferable.

In the case where other test conditions are identical, by the gap between the top of block reinforcement 8 and the lower surface of panel 2 A setting it is larger when, the temperature rise of circuit board assemblies 4 is significantly higher, after tested, when gap a be 25mm when, circuit board assemblies 4 Temperature rise when 18mm is arranged in gap a by temperature rise ratio want it is 5 DEG C high~15 DEG C.

More preferred, block reinforcement 8 extends between coil panel 3 and circuit board assemblies 4, can reduce to a certain extent in this way Heat radiation between coil panel 3 and circuit board assemblies 4 avoids the heat of the two from influencing each other.Specifically, when circuit board assemblies 4 Including circuit board and when radiator 40, radiator 40 can be arranged close to cooling fan 5, so that more to the heat dissipation of radiator 40 Fastly, block reinforcement 8 specifically extends between coil panel 3 and radiator 40, to ensure that circuit board and positioned at circuit front edge of board 40 position of radiator can obtain enough cooling air-flows, further improve the heat dissipation effect to circuit board assemblies 4.

Further, the two sides side wall due to the exhaust vent of the electromagnetic oven of the prior art along bottom case is arbitrarily spread, and causes Wind direction is more dispersed, influences to blow to the wind speed of heater element and heat dissipation effect is caused to reduce.Based on this, the electromagnetism of the present embodiment The exhaust vent 110 of furnace is specifically provided on the side wall opposite with air inlet hole 120 of bottom case 1, and/or, exhaust vent 110 is provided with bottom The side of the separate air inlet hole 120 of the bottom wall 105 of shell 1.That is, exhaust vent 110 is provided on the rear wall of electromagnetic oven, or Person, exhaust vent 110 is provided with the bottom wall 105 of bottom case 1 close to the position of rear wall, alternatively, rear wall and bottom in electromagnetic oven The bottom wall 105 of shell 1 opens up exhaust vent 110 close to the position of rear wall.

That is, all air inlet holes 120 of the electromagnetic oven of the present embodiment are located at the front of electromagnetic oven, all exhaust vents 110 are located at the rear portion of electromagnetic oven, do not open up air inlet hole 120 on the wall of electromagnetic oven bottom shell two sides, also do not open up exhaust vent 110, that is, The electromagnetic oven is air exhausting structure after advancing air, and the cooling wind outside electromagnetic oven is under the action of cooling fan 5 from air inlet hole 120 Into 1 inner cavity of bottom case, after the pressurization of cooling fan 5, wind cannot not open up the position blowout of exhaust vent 110, Zhi Nengcong from other It concentrates on the exhaust vent 110 far from air inlet hole 120 to blow out, so that the whole flow direction in the air duct of electromagnetic oven is from 1 inner cavity of bottom case From front portion backward, make air duct flow direction substantially in a straight line, reduce the bend pressure loss of air-flow, make to be formed in electromagnetic oven compared with Big wind pressure makes to blow to heater element air quantity and more concentrate, and wind speed is bigger, to improve the heat dissipation effect of electromagnetic oven.

Moreover, if overflowing pot phenomenon occurs in cooking process, when the soup flowed out out of cookware is flowed down from 1 two sides of bottom case, by In not opening up air inlet hole 120 and exhaust vent 110 on the wall of 1 two sides of bottom case, therefore, soup will not be entered in 1 inner cavity of bottom case；By In on the user oriented side wall that air inlet hole 120 is only provided with bottom case 1, that is, air inlet hole 120 is close to operating area (i.e. electromagnetic oven Front side) setting, that is to say, that the cookware on electromagnetic oven panel is placed on apart from air inlet hole 120 farther out, even if it is existing that overflowing pot occurs As being also not easy to flow into 1 inner cavity of bottom case from air inlet hole 120 from the soup overflowed in cookware, further to the device in electromagnetic oven Part has carried out effective protection, avoids the generation of unsafe accident.

Wherein, bottom case 1 is specific can include: lower cover and the upper cover above lower cover.In the present embodiment, lower cover is specific For cavity body structure, upper cover can be frame shape lid.The side wall of lower cover is formed as at least partly side wall of bottom case 1, and air inlet hole 120 opens up On the user oriented side wall of lower cover, exhaust vent 110 is specifically provided on the side wall of separate air inlet hole 120 of lower cover, and/ Or, being provided with the bottom wall 105 of bottom case 1 far from the position of air inlet hole 120.It is of course also possible to be, upper cover includes side wall, upper cover Side wall is formed as at least partly side wall of bottom case 1, in that case, air inlet hole 120 can specifically be provided with upper cover towards with On the side wall at family, exhaust vent 110 can be specifically provided on the side wall opposite with air inlet hole 120 of upper cover.For another example upper cover includes Middle lid and the upper cover body above middle lid, the side wall of middle lid is formed as at least partly side wall of bottom case 1, in this kind In the case of, air inlet hole 120 can be specifically provided on the user oriented side wall of middle lid, during exhaust vent 110 can be specifically provided with On that side wall opposite with the side wall for offering air inlet hole 120 of lid.It is also possible to the side wall of upper cover and the side wall of lower cover It is collectively formed at least partly side wall of bottom case 1, it, can be on the user oriented side wall of upper cover and lower cover in the case of this kind Open up air inlet hole 120, exhaust vent 110 can be provided with that opposite with 120 side wall of air inlet hole is offered of upper cover and lower cover On a side wall.

Wherein, coil panel 3 can be specifically fixed on lid, can also be fixed on lid, or be clamped in upper cover and Between lower cover, alternatively, being fixed on the lower surface of panel, the utility model is not especially limited this.

When specific implementation, it can set multiple for air inlet hole 120, multiple air inlet holes 120 are intervally arranged in the face of bottom case 1 To on the side wall of user, for example, multiple air inlet holes 120 be arranged into it is grid-like, not only ensure that intake and air inlet uniformity, and Improve the aesthetic appearance of electromagnetic oven.Multiple air inlet holes 120 can also be arranged into multiple lines and multiple rows or ring-type etc..Each air inlet hole 120 can be the shapes such as bar shaped, circle, and the utility model is not construed as limiting this.Exhaust vent 110 may be set to be it is multiple, than If multiple exhaust vents 110 are intervally arranged on that side wall opposite with the side wall for offering air inlet hole 120 of bottom case 1, for example, Multiple exhaust vents 110 be arranged into along the length direction of the side wall it is grid-like, and/or, multiple exhaust vents 110 are intervally arranged in bottom case On the bottom wall of 1 separate air inlet hole 120, for example, multiple exhaust vents 110 are radially arranged.

In the present embodiment, there is wind screen rib 6, the inner cavity of bottom case 1 is divided into mountable by wind screen rib 6 in the inner cavity of bottom case 1 The first chamber 11 of coil panel 3, circuit board assemblies 4 and cooling fan 5 and the second chamber 12 of mountable lamp plate 7.Namely It says, coil panel 3, circuit board assemblies 4 and cooling fan 5 are located at first chamber 11, and lamp plate 7 is located at second chamber 12.

It, can be with it should be noted that the inner cavity of bottom case 1 is divided into first chamber 11 and second chamber 12 by wind screen rib 6 herein It is that wind screen rib 6 is completely isolated by first chamber 11 and second chamber 12, is also possible to wind screen rib 6 and substantially divides the inner cavity of bottom case 1 For two regions, first chamber 11 and second chamber 12 are not entirely isolated.

When specific implementation, wind screen rib 6 can be integrally formed with bottom case 1, for example, being molded when bottom case 1 is plastic pan When bottom case 1, the integrated injection molding wind screen rib 6 in bottom case 1.Certainly, wind screen rib 6 is also possible to subsequent fixed in bottom case 1, this Utility model is not construed as limiting this.

Wherein, air inlet hole 120 is specifically provided on the user oriented side wall of second chamber 12, in order to make from air inlet hole 120 cooling winds entered can swimmingly enter to 5 place chamber of cooling fan, be also provided on wind screen rib 6 for being connected to second Chamber 12 and the ventilation opening of first chamber 11 60.

By the way that wind screen rib 6 is arranged, air inlet hole 120 is provided on the user oriented side wall of second chamber 12, so that bottom 1 inner cavity formation temperature height of shell opposite cold wind chamber and hot air cavity, while ventilation opening 60 is opened up on wind screen rib 6 so that from into The cooling wind that air holes 120 enters can swimmingly enter at cooling fan 5 by ventilation opening 60, ensure that and blow to heater element Air quantity, so that cooling wind is effectively used, further improve heat dissipation effect；When due to electromagnetic oven work, lamp plate 7 is installed Second chamber 12 in heat very little, air inlet hole 120 is provided with second chamber 12, so that entering to from second chamber 12 The cooling wind temperature of one chamber 11 is lower, to further improve heat dissipation effect.

Wherein, ventilation opening 60 is specifically provided with being disposed around on the part of the periphery of cooling fan 5 of wind screen rib 6 so that from into The cooling wind that air holes 120 enters directly is inhaled into 5 position of cooling fan, keeps air inlet path shorter, enters the wind more smooth.It is more excellent Choosing, 60 face air inlet hole 120 of ventilation opening can be made to be arranged, so that the cooling wind entered from air inlet hole 120 flows through road Line is substantially rectilinear, reduces delay resistance, enable cooling wind more quickly, swimmingly reach first chamber 11, further Improve radiating efficiency.

The cooling fan 5 of the present embodiment specifically can be lower-cost axial flow blower.Cooling fan 5 is specific can include: Fan supporter and flabellum, have rotor on fan supporter, and flabellum is connect with rotor.After cooling fan 5 installs, for example, Fan supporter is located above, and flabellum is located below.Fan supporter can be fixed on the lower lid of bottom case 1, can also be fixed on Cover, or be fixed on panel 2 etc., the utility model is not especially limited this.Certainly, cooling fan 5 also may include Flabellum and the fan shroud for being located at flabellum periphery.

In the first feasible implementation, the lower surface of cooling fan 5 forms air intake surface, the upper table of cooling fan 5 Face is formed as outlet air surface, that is, the lower surface of flabellum is air intake surface, and the upper surface of flabellum is outlet air surface, and air inlet direction is lower air inlet Upper outlet air.Cooling wind enters to the bottom of cooling fan 5, then blows to heater element from the top of cooling fan 5.In this kind of feelings Under condition, more preferably, ventilation opening 60 can be made to extend to the bottom end of wind screen rib 6.Make the cooling entered from ventilation opening 60 in this way Wind can the direct and air intake surface as much as possible for reaching cooling fan 5, and then blow under the action of cooling fan 5 fever member Part further improves the speed and smoothness of air inlet.

Further, the plane where the top of ventilation opening 60 can be made not higher than flat where the lower surface of cooling fan 5 Face.That is, the plane where the top of ventilation opening 60 is not higher than the lowest part of the air intake surface of flabellum.If by the top institute of ventilation opening 60 Plane be set above the lower surface of cooling fan 5 where plane, will lead to cooling fan 5 may be by part wind It is back in second chamber 12, and then causes the part wind that can not blow to the heater elements such as coil panel 3, circuit board assemblies 4, cause to blow Become smaller to the air quantity of heater element, the plane where top of the utility model by making ventilation opening 60 is lower than cooling fan 5 Plane where lower surface, or it is concordant with the plane where the lower surface of cooling fan 5, to guarantee to enter to from ventilation opening 60 The intake of first chamber 11, further ensures heat dissipation effect.

In second of feasible implementation, the upper surface of cooling fan 5 is formed as air intake surface, under cooling fan 5 Surface is formed as outlet air surface, that is, the upper surface of flabellum is air intake surface, and the lower surface of flabellum is outlet air surface, and air inlet direction is enterprising Outlet air under wind.Cooling wind blows out from the bottom of cooling fan 5 after the pressurization of cooling fan 5, blows to heater element.In this kind of feelings Under condition, more preferably, ventilation opening 60 can be made to extend to the top of wind screen rib 6.Make the cooling entered from ventilation opening 60 in this way Wind can the direct and air intake surface as much as possible for reaching cooling fan 5, and then blow under the action of cooling fan 5 fever member Part further improves the speed and smoothness of air inlet.

Further, the plane where the bottom end of ventilation opening 60 can be made not less than flat where the upper surface of cooling fan 5 Face.Plane where the upper surface of cooling fan 5 is the highest point of the air intake surface of the flabellum of cooling fan 5.If by ventilation opening Plane where 60 bottom end is set below the plane where the upper surface of cooling fan 5, and will lead to cooling fan 5 may Part wind is back in second chamber 12, and then causes the part wind that can not blow to the fever such as coil panel 3, circuit board assemblies 4 Element causes the air quantity for blowing to heater element to become smaller, and the plane where top of the present embodiment by making ventilation opening 60, which is higher than, to be dissipated Plane where the upper surface of air-heater 5, or it is concordant with the plane where the upper surface to cooling fan 5, to guarantee from logical Air port 60 enters to the intake of first chamber 11, further ensures heat dissipation effect.

Specific profile shape the utility model of ventilation opening 60 is not especially limited, if can guarantee it is good into Wind.

Certainly, in other implementations, heat sinking function is equally can be achieved in cooling fan 5 or centrifugal blower.Than Such as, the lower surface of cooling fan 5 is air intake surface, circumferential direction blowout of the cooling wind from cooling fan 5.

Wherein, the side wall of bottom case 1 is specific can include: along the sequentially connected the first side wall 101 of the circumferential direction of bottom case 1, second side Wall 102, third side wall 103 and the 4th side wall 104.Wherein, third side wall 103 can be made to be oppositely arranged with the first side wall 101, second Side wall 102 is oppositely arranged with the 4th side wall 104, that is to say, that the bottom case 1 of the present embodiment is particularly formed as rectangular bottom case.Certainly, Bottom case 1 or surrounded by the first side wall 101, second sidewall 102, third side wall 103 and the 4th side wall 104 it is round or ellipse Round bottom case.

When normally being cooked using electromagnetic oven, 101 user oriented of the first side wall, that is, be formed as front side wall；Third side Wall 103 is formed as rear wall far from user；Second sidewall 102 and the 4th side wall 104 are respectively formed as the side of the left and right sides Wall.Air inlet hole 120 is provided on the first side wall 101.

More preferred, at least partly exhaust vent 110 is provided on third side wall 103, that is to say, that all exhaust vents 110 are all provided on third side wall 103, alternatively, a part of exhaust vent 110 is provided on third side wall 103, a part of outlet air Hole 110 is provided with the side of the close third side wall 103 of bottom wall 105, can be further ensured that in this way distinguished and admirable in electromagnetism furnace chamber Path substantially straight type, and keep the outflow path of hot wind more excellent, outflow is faster.

With continued reference to Fig. 1 to Fig. 3, it can specifically make coil panel 3, circuit board assemblies 4 and the whole row triangular in shape of cooling fan 5 Cloth.Cooling fan 5 is located at 6 rear of wind screen rib, and coil panel 3 is between cooling fan 5 and third side wall 103, circuit board assemblies 4 Between cooling fan 5 and the 4th side wall 104.Outlet air a part of cooling fan 5 is made to blow to coil panel 3 in this way, one Divide and blow to circuit board assemblies 4, then hot wind is directly blown out from the exhaust vent 110 at 1 rear portion of bottom case.

Since exhaust vent 110 is provided with the rear portion of bottom case 1, in the second sidewall 102 of two sides and the 4th side wall 104 Do not open up exhaust vent 110, the purpose that exhaust vent 110 is not provided in second sidewall 102 be avoid air-flow flow through this side without Effective cooling is generated to circuit board assemblies 4 and coil panel 3, so as to cause the waste of unnecessary air-flow；On the 4th side wall 104 The purpose for not opening up exhaust vent is the change that the exhaust vent for avoiding herein can cause air duct path, avoids a large amount of first flowing through coil disks 3 air-flow being heated flows through the rear portion of circuit board assemblies 4, and the temperature of accumulation makes temperature herein become higher situation hair It is raw.

Wherein, wind screen rib 6 is specific can include: sequentially connected first muscle section 61 and the second muscle section 62, wherein the first muscle section 61 are formed as the part cavity wall of second chamber 12, and the second muscle section 62 is disposed around the periphery of cooling fan 5.

More preferred, wind screen rib 6 can also include third muscle section 63, and one end of third muscle section and the second muscle section 62 connect It connects, the other end of third muscle section 63 extends towards the direction of third side wall 103, alternatively, the other end of third muscle section 63 is towards the The joint of three side walls 103 and second sidewall 102 extends.

By the way that third muscle section 63 is arranged, extend third muscle section 63 towards the direction of third side wall 103 or towards third The joint of side wall 103 and second sidewall 102 extends, so that the width of first chamber 11 is reduced, so that blowing to first chamber 11 cooling wind is more concentrated, more preferable to the heat dissipation effect of heater element.

Certainly, in other implementations, it can also be not provided with third muscle section 63, the second muscle section 62 is made to extend to second side Wall 102 is connect with second sidewall 102.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of electromagnetic oven, including bottom case (1) and the panel (2) being located on the bottom case (1), the inner cavity of the bottom case (1) In be equipped with cooling fan (5), coil panel (3) and circuit board assemblies (4), air inlet hole (120) and out is offered on the bottom case (1) Air holes (110), which is characterized in that the air inlet hole (120) is provided on the user oriented side wall of the bottom case (1)；

It is provided between the coil panel (3) and the cooling fan (5) block reinforcement (8), the top and the face of the block reinforcement (8) Gap (a) range between the lower surface of plate (2) is 3mm~20mm.

2. electromagnetic oven according to claim 1, which is characterized in that the block reinforcement (8) extends to the coil panel (3) and institute It states between circuit board assemblies (4)；

When the circuit board assemblies (4) include circuit board and radiator (40), the radiator (40) is close to the cooling fan (5) it is arranged, the block reinforcement (8) extends between the coil panel (3) and the radiator (40).

3. electromagnetic oven according to claim 1, which is characterized in that the exhaust vent (110) is provided with the bottom case (1) With the air inlet hole (120) on opposite side wall, and/or, the exhaust vent (110) is provided with the bottom wall of the bottom case (1) (105) the side far from the air inlet hole (120).

4. electromagnetic oven according to claim 3, which is characterized in that there are wind screen rib (6) in the inner cavity of the bottom case (1), The inner cavity of the bottom case (1) is divided into the mountable cooling fan (5), the coil panel (3) and described by the wind screen rib (6) The first chamber (11) of circuit board assemblies (4) and the second chamber (12) of mountable lamp plate (7)；

The air inlet hole (120) is provided on the user oriented side wall of the second chamber (12)；

The ventilation opening for being connected to the second chamber (12) and the first chamber (11) is offered on the wind screen rib (6) (60)。

5. electromagnetic oven according to claim 4, which is characterized in that the ventilation opening (60) is provided with the wind screen rib (6) Be disposed around on the part of the cooling fan (5) periphery；

The setting of air inlet hole (120) described in ventilation opening (60) face.

6. electromagnetic oven according to claim 4, which is characterized in that the lower surface of the cooling fan (5) is formed as entering the wind The upper surface in face, the cooling fan (5) is formed as outlet air surface；The ventilation opening (60) extends to the bottom of the wind screen rib (6) End；

Alternatively, the upper surface of the cooling fan (5) is formed as air intake surface, the lower surface of the cooling fan (5) is formed as Wind face；The ventilation opening (60) extends to the top of the wind screen rib (6).

7. electromagnetic oven according to claim 6, which is characterized in that the lower surface of the cooling fan (5) is formed as entering the wind When the upper surface in face, the cooling fan (5) is formed as outlet air surface, the plane where the top of the ventilation opening (60) is not higher than Plane where the lower surface of the cooling fan (5)；

The upper surface of the cooling fan (5) is formed as air intake surface, and the lower surface of the cooling fan (5) is formed as outlet air surface When, the plane where the bottom end of the ventilation opening (60) is not less than the plane where the upper surface of the cooling fan (5).

8. electromagnetic oven according to any one of claims 1 to 7, which is characterized in that the side wall of the bottom case (1) includes: edge The sequentially connected the first side wall of circumferential direction (101), second sidewall (102), third side wall (103) and the 4th side of the bottom case (1) Wall (104)；The third side wall (103) is oppositely arranged with the first side wall (101), the second sidewall (102) with it is described 4th side wall (104) is oppositely arranged；

The first side wall (101) user oriented, the air inlet hole (120) are provided on the first side wall (101)；

At least partly described exhaust vent (110) is provided on the third side wall (103).

9. electromagnetic oven according to claim 8, which is characterized in that the coil panel (3), the circuit board assemblies (4) and The whole arrangement triangular in shape of cooling fan (5)；

The coil panel (3) is between the cooling fan (5) and the third side wall (103), the circuit board assemblies (4) Between the cooling fan (5) and the 4th side wall (104).

10. electromagnetic oven according to claim 8, which is characterized in that there are wind screen rib (6) in the inner cavity of the bottom case (1) When, the wind screen rib (6) includes sequentially connected first muscle section (61) and the second muscle section (62)；The first muscle section (61) is formed For the part cavity wall of second chamber (12), the second muscle section (62) is disposed around the periphery of the cooling fan (5)；

The wind screen rib (6) further includes third muscle section (63), one end of the third muscle section (63) and the second muscle section (62) The other end of connection, the third muscle section (63) extends towards the direction of the third side wall (103), alternatively, the third muscle The other end of section (63) extends towards the joint of the third side wall (103) and the second sidewall (102).