CN101666323A - Fan and microwave oven using same - Google Patents
Fan and microwave oven using same Download PDFInfo
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- CN101666323A CN101666323A CN200810151231A CN200810151231A CN101666323A CN 101666323 A CN101666323 A CN 101666323A CN 200810151231 A CN200810151231 A CN 200810151231A CN 200810151231 A CN200810151231 A CN 200810151231A CN 101666323 A CN101666323 A CN 101666323A
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Abstract
The invention discloses a microwave oven, which comprises a fan casing and a blade, wherein the fan casing is provided with at least one air-suction part and at least two air-discharge parts; the blade is rotatably arranged inside the fan casing, sucks in air through the air-suction part and discharges the air through the air-discharge parts; and by taking the rotation direction of the blade as astandard, the shortest distances D1 and D3 from the inner circumference surface of the fan casing to the outer circumference surface on the end of the inlet side of each air-discharge part is greaterthan the shortest distances D2 and D4 from the inner circumference surface of the fan casing to the outer circumference surface on the end of the outlet side of each air-discharge part. The microwaveoven can more effectively cool components forming the microwave oven, particularly a power distribution component producing microwave and a heater producing electric heat, through a first fan component and a second fan component, so the microwave oven can prevent the components from being in an overheating state and improve the action reliability of the microwave oven.
Description
Technical field
The present invention relates to microwave oven, particularly relate to a kind of microwave oven that can cool off parts more swimmingly.
Background technique
Usually microwave oven is the cooking equipment that utilizes microwave or electric heating cooking food.This microwave oven have usually the electronic unit that produces microwave with and/or produce the heater of electric heating.In addition, in microwave oven, be provided with the cooling system that electronic unit or/and heater are cooled off.
But the cooling system of original microwave oven can not cool off electronic unit or/and heater effectively, thereby has reduced the efficient of microwave oven and the confidence level of action.
Summary of the invention
The present invention proposes in order to solve the problems of the prior art, and its objective is provides a kind of microwave oven that can more effectively cool off parts.
In order to achieve the above object, the microwave oven of one embodiment of the invention comprises: the fan casing that is formed with at least one suction unit and at least two exhaust portion, and the inside that can be rotatably set in the fan casing, suck air and the blade by described exhaust portion exhausting air by described suction portion, sense of rotation with described blade is as the criterion, on each exhaust portion inlet side end from fan casing inner peripheral surface to the beeline D1 the blade peripheral surface, D3 greater than on the outlet side end separately from fan casing inner peripheral surface to the beeline D2 the blade peripheral surface, D4.
The microwave oven of another embodiment of the present invention comprises: have the fan casing of at least one suction unit and at least two exhaust portion and can be rotatably set in described fan casing inside, suck air and the blade by described exhaust portion exhausting air by described suction unit, sense of rotation with described blade is as the criterion, long-pending long-pending greater than described housing inner peripheral surface and the flow profile between the described blade peripheral surface on outlet side end separately from described fan casing inner peripheral surface to the flow profile the described blade peripheral surface on the described exhaust portion inlet side end.
A kind of microwave oven comprises: housing, the fan that is arranged on a plurality of parts in the above-mentioned housing and is formed for cooling off the air-flow of above-mentioned parts at least by both direction.
Microwave stove of the present invention described above is just like issuing the obvious results fruit:
At first, among the present invention, can pass through the 1st and the 2nd fan component, more effectively cooling constitutes the parts of microwave oven, particularly produces the power distribution unit of microwave and the heater that produces electric heating.Therefore, can prevent that parts are in superheat state, improve the confidence level of microwave oven action.
In addition, among the present invention, utilize a fan to the both direction exhausting air.Thereby, can reduce the number of the parts that are used to cool off relatively, even and only use the fan of limited number, also can diversely design each position component.
In addition, among the present invention, the bolt plate is separately fixed at the side of front panel and wainscot by assembling part, thereby in the process of shutter door, the bolt plate can move to accurately on the position, can combine with the bolt hook more exactly.
Moreover, form along the current path that forms by fan component vary in size, to the cooling hole of heater supplies air.Thereby can cool off heater more effectively.
In addition, among the present invention, air behind the cooling low temperature parts and the air behind the cooling down high-temperature parts are spaced from each other under the effect of the 3rd air register, and by the air behind the cooling low temperature parts, be that Cryogenic air is cooled off convection fan, therefore can more effectively cool off the convection current motor.
In addition, among the present invention, utilize the suction grid can prevent that the suction unit of fan component from exposing, thereby can allow the user more safely use microwave oven.
In addition, among the present invention, utilize the 1st air guide element include by the air of the air of convection heater heating more effectively water conservancy diversion in cooking cavity, thereby can more effectively utilize convection fan to cook.
In addition, among the present invention, utilize the 2nd air guide element to two heaters diversion air equably.Thereby can cool off a plurality of heaters equably.
Among the present invention, in the porous portion of cooking cavity water conservancy diversion electric heating, be formed with the linear reinforcement of closed type press strip, thereby can preventing that microwave from concentrating in the porous portion, even use the contour power heater of halogen heater can prevent that also thermal distortion from appearring in porous portion.
Description of drawings
Fig. 1 is an embodiment's of a microwave oven of the present invention decomposing schematic representation;
Fig. 2 is the schematic representation of porous portion in the embodiments of the invention;
Fig. 3 is the schematic rear view of microwave oven in the embodiments of the invention;
Fig. 4 is the internal structure front schematic view in microwave oven convection current chamber in the embodiments of the invention;
Fig. 5 is along the generalized section of A-A ' line line direction among Fig. 4;
Fig. 6 is the side schematic view of microwave oven in the embodiments of the invention;
Fig. 7 is the partial structurtes schematic representation that constitutes bolt (latch) plate of the embodiment of the invention;
Fig. 8 is the decomposing schematic representation that constitutes the upper portion heater assembly of the embodiment of the invention;
Fig. 9 is the floor map that constitutes the reflector of the embodiment of the invention;
Figure 10 is the partial schematic diagram that constitutes the 1st heater housing of the embodiment of the invention;
Figure 11 is the schematic representation of the 2nd fan component and the 2nd air register in the embodiment of the invention;
Figure 12 is the schematic representation of the 2nd fan of the 2nd fan component in the embodiment of the invention;
Figure 13 is the schematic cross section of the 2nd fan of the 2nd fan component of the embodiment of the invention.
Embodiment
Below, with reference to accompanying drawing, microwave oven embodiment of the present invention is elaborated.
As Fig. 1～shown in Figure 7, top and bottom, bottom surface and the bi-side of the housing 100 of microwave oven are respectively arranged with top panel 110, bottom panel 120 and wainscot 130.Wainscot 130 has forwards open on the whole
The shape shape comprises back side portion and two side face.
In addition, be combined with front panel 140 and backplate 150 respectively in the front end and back end of housing 100.In fact front panel 140 and backplate 150 form the front and the back appearance of microwave oven.Front panel 140 and backplate 150 have respectively the tabular structure of rectangular that the side face of the bottom surface of end face to top panel 110, bottom panel 120 and wainscot 130 is extended.
In addition, be combined with base panel 160 in the bottom of housing 100.The front end and back end portion of base panel 160 is fixed on the lower end of front panel 140 and the lower end of backplate 150 respectively.In addition, base panel 160 under the state that is incorporated into housing 100 bottoms, with bottom panel 120 mutually across a certain distance.
Top and both sides at housing 100 are combined with shell 170.Shell 170 comprises top part and two side face, is downward opening on the whole
The shape shape.In addition, cover at shell 170 under the state of the top of housing 100 and both sides, the top part of shell 170 and side face respectively with the side of top panel 110 and wainscot 130 mutually across a certain distance.
In addition, be formed with cooking cavity 101 in the inside of housing 100.In fact, the end face of cooking cavity 101 and bottom surface, the back side and bi-side are formed by the back side portion and the both sides face of top panel 110 and bottom panel 120 and wainscot 130 respectively.Cooking cavity 101 is the spaces of material object being cooked by microwave or/and electric heating.
Between top panel 110 and shell 170 top parts, be provided with distribution chamber 103.In distribution chamber 103, be provided with the power distribution unit that is used to produce microwave, the 1st, the 2nd fan component 300,400 that is used to produce the upper portion heater assembly 200 of electric heating and is used to cool off power distribution unit and upper portion heater assembly 200.Power distribution unit comprises magnetron 104 and high-tension transformer 105.
As shown in Figure 2, in the distribution chamber 103 adjacent with high-tension transformer 105, the left side of top panel 110 is provided with porous portion 111 in Fig. 1.The porous portion 111 of top panel 110 is the long rectangular shape with respect to the axis slight inclination on the fore-and-aft direction on the whole.The porous portion 111 of top panel 110 is covered by heater glass (not shown).
In porous portion 111, be provided with and strengthen press strip 113.Strengthen press strip 113 and be forming with certain thickness and closed shape, have linearity configuration by the part of porous portion 111.This is in order to prevent that microwave from concentrating on the bight of strengthening press strip 113, have open linearity configuration if that is: strengthen press strip 113 that then microwave is concentrated in the two ends of suppressing bar 113.In the present embodiment, strengthen press strip 113 and have ' mouth ' font structure on the whole, but the present invention is not subject to this structure.That is, strengthen press strip 113 and can also have elliptical shape or run-track shaped (being the elliptical shape that intermediate portion has parallel-segment).
As shown in Figure 1, upper portion heater assembly 200 is set in place in the distribution chamber 103 on porous portion 111 tops.Upper portion heater assembly 200 is for the food radoal heating in the cooking cavity 101 being produced the part of electric heating.Detailed structure to upper portion heater assembly 200 will be described hereinafter.
The 1st fan component 300 is by long the place ahead of power distribution unit, the right side fore-end (being as the criterion with Fig. 1) in distribution chamber 103 of being formed on longways of left and right directions.The 1st fan component 300 comprises a fan electromotor 310 and two fans 320,330.Wherein, the 1st fan 320 that is called that is arranged in the figure right side, be arranged in the 2nd fan 330 that is called in figure left side.The 1st fan 320 of the 1st fan component 300 sucks the power distribution unit that cooling behind the indoor airs comprises magnetron 104 and high-tension transformer, is formed for discharging the oil gas in the cooking cavity 101 or the air-flow of steam.In addition, after the 2nd fan 330 of the 1st fan component 300 sucks indoor air, be formed for to close the air-flow that the stream mode is cooled off the following convection current motor 760 that will illustrate.For this reason, the 1st fan 320 is discharged to magnetron 104 directions after sucking air from 103 right sides, distribution chamber (accompanying drawing is as the criterion); After the 2nd fan 330 sucked indoor air from 103 left sides, distribution chamber (accompanying drawing is as the criterion), rearward high-tension transformer 105 directions (accompanying drawing is as the criterion) were discharged.
The 2nd fan component 400 is by the long left side (accompanying drawing is as the criterion) of upper portion heater assembly 200, the left end (accompanying drawing is as the criterion) in distribution chamber 103 of being arranged on longways of fore-and-aft direction.
The 2nd fan component 400 comprises a fan electromotor 410 and is separately positioned on two fans 420,430 of fan electromotor 410 both sides.Wherein, be called the 1st fan 420 to one after being arranged in figure and leaning on, be called the 2nd fan 430 being arranged in forward one of figure.The lower heater 780 that will illustrate below the 1st fan 420 of the 2nd fan component 400 is formed for cooling off and the air-flow of rotary tray motor 790.For this reason, after the portion of air that the 1st fan 420 of the 2nd fan component blows the 2nd fan 330 of the 1st fan component 300 was drawn into the rear in distribution chamber 103, row downwards.The 2nd fan 430 of the 2nd fan component 400 is formed for the air-flow that cools off the air-flow of upper portion heater assembly 200 and be used to cool off lower heater 780 and rotary tray motor 790.For this reason, the 2nd fan 430 of the 2nd fan component 400 is discharged to top heater assembly 200 and below behind the place ahead suction indoor air in distribution chamber 103.
That is, on the 2nd fan 430 of the 2nd fan component 400, be formed with the 1st and the 2nd discharge portion 433,434 (Figure 12 and Figure 13), in fact with the both direction exhausting air.According to the action of upper portion heater assembly 200 whether the 2nd fan component 400 that forms air-flow is driven with being allowed a choice.That is, the 2nd fan component 400 is also worked when 200 work of upper portion heater assembly together, also is stopped driving when upper portion heater assembly 200 stops to drive.The structure relevant with driving mode of the 2nd fan component 400 and the 2nd fan 430 will be elaborated in the back.
In addition, in distribution chamber 103, be provided with the 1st air register 510.The 1st air register 510 prevents to flow into the 1st fan component 300 again by the air that the 1st fan component 300 is discharged.In addition, in fact the 1st air register 510 marks off right side front end (accompanying drawing is as the criterion) part and the remainder that the distribution chamber 103 of power distribution unit and upper portion heater assembly 200 is set in the distribution chamber 103 that the 1st fan component 300 is set.
On the 1st air register 510, be provided with two exhaust ports (figure slightly).Exhaust port by the 1st air register 510 will be passed to distribution chamber 103 by the air that the 1st, the 2nd fan 320,330 of the 1st fan component 300 is discharged.
In addition, on distribution chamber 103, be formed with the 2nd air register 520.The 2nd air register 520 prevents to flow into the 2nd fan component 400 again by the air that the 2nd fan component 400 is discharged.In the present embodiment, the 2nd air register 520 extends to the bight of housing 170 end faces and left side (accompanying drawing is as the criterion) formation from the left corner (accompanying drawing is as the criterion) of housing 100 upper ends.
On the 2nd air register 520, be formed with two exhaust ports 521,523 (with reference to Fig. 6).Row is to spaces that the air of the 1st, the 2nd fan 420,430 of the 2nd fan component 400 exhaust port 521,523 by the 2nd air register 520 passes between the left side that is positioned at wainscot 130 (accompanying drawing is as the criterion) and shell 170 left sides (accompanying drawing is as the criterion).In addition, on the 2nd air register 520, be formed with open communication 525.Form after the 2nd air register 520 rear end partial cut of open communication 525 by the 1st fan 420 rears (accompanying drawing is as the criterion) that are positioned at the 2nd fan component 400.Even the 1st fan 420 of open communication 525 the 2nd fan component 400 stops (certainly, because the 1st, the 2nd fan 420,430 of the 2nd fan component 400 is driven by same motor 410, therefore the 1st fan and the 2nd fan 420,430 can stop simultaneously), the part air flow that the 2nd fan 330 by the 1st fan component 300 is blowed is positioned at the space between the left side (accompanying drawing is as the criterion) of wainscot 130 left sides (accompanying drawing is as the criterion) and shell 170.Below after describing the 2nd fan component 400 in detail, again the 2nd air register 520 is described.
The upper and lower end of plate 140 is respectively equipped with a plurality of suction ports 141 and exhaust port 143 in front.The suction port 141 of front panel 140 and exhaust port 143 are formed by definite shape excision back by the upper end or the lower end of front panel 140 respectively.The suction port 141 of front panel 140 and exhaust port 143 are respectively as the air suction inlet and the exhaust port of the 1st and the 2nd fan component 300,400.
In addition, be provided with at the front end of the top panel 110 at suction port 141 rears that are positioned at front panel 140 and suck grid 600.Suck grid 600 and be flat hexahedral shape substantially.In addition, suck indoor air water conservancy diversion to the 1 and the 2nd fan component 300,400 that grid 600 sucks the suction port 141 by front panel 140.Suck grid 600 when preventing that foreign from flowing into, prevent that the electric heating of upper portion heater assembly 200 from passing to indoor.
For this reason, sucking on the front of grid 600 and the end face the right side of the suction grid 600 that is positioned at power distribution unit and the 1st fan component 300 the place aheads, (accompanying drawing is as the criterion) and be formed with a plurality of inlet holes 610.In addition, in the left side (accompanying drawing is as the criterion) of the suction grid 600 that is positioned at upper portion heater assembly 200 and the 2nd fan component 400 the place aheads, sucking on the end face of grid 600 and be formed with a plurality of suction openings 620.The structure for inhaling air that why sucks grid 600 is different, be because position, the 1st fan component 300 and the 2nd fan component 400 of upper portion heater assembly 200 the position difference is set.That is,,, only form suction opening 620 at end face its left part (accompanying drawing is as the criterion) adjacent to suction grid 600 near the 2nd fan component 400 of upper portion heater assembly 200.In addition, because the suction portion that is used to suck air of the 1st fan component 300 is towards both sides, even therefore also can not enter the suction portion of the 1st fan component 300 in the front of suction grid 600 formation inlet hole 610, foreign.But, because the suction portion of the 2nd fan component 400 towards fore-and-aft direction, therefore in the left part (accompanying drawing is as the criterion) that sucks grid 600, only forms suction opening 620 at end face.
The upper end of plate 140 is provided with control set 180 in front.Control set 180 has and the corresponding width of front panel 140 left and right directions, is platy structure.The front of control set 180 and front panel 140 are positive in the same plane.In addition, be provided with control panel 190 in the front of control set 180.Control panel 190 is used for the various operation signals of input operation microwave oven action, and outwards shows and the relevant various information of microwave oven action.Control panel 190 covers the suction port 141 of front panel 140 and a part that sucks inlet hole 610 tops of grid 600 under the state that is arranged at control set 180.
In addition, control panel 190 is by cooling off by the suction port 141 of front panel 140, the inlet hole 610 of suction port 600 and the indoor air that suction opening 620 flows into.In order further to improve the cooling effectiveness of control panel 190, can heat pump (figure slightly) be set in the inboard of the control panel 190 adjacent with the inlet hole 610 that sucks grid 600, suction opening 620.
In addition, as Fig. 1, shown in Figure 3, the upper and lower end of plate 150 is formed with suction opening 151 and discharge aperture 157 respectively overleaf.The suction opening 151 of backplate 150 and discharge aperture 157 form after the partial cut by the backplate 150 that is positioned at top panel 110 tops and bottom panel 120 belows respectively.The suction opening 151 of backplate 150 allows air behind the cooling upper portion heater assembly 200 and the air behind the cooling high-tension transformer 105 suck, and plays the suction port effect of air.The part of suction opening 151 that following handle is positioned at the backplate 150 that is communicated with distribution chamber 103 in high-tension transformer 105 dead asterns calls distribution chamber suction opening 153, and the part of the suction opening 151 of the backplate 150 that is communicated with upper portion heater assembly 200 is called heater suction opening 155.In addition, the spatial communication between the discharge aperture 157 of backplate 150 and bottom panel 120 and the base panel 160 allows and discharges by suction opening 151 leaked-in airs of backplate 150, plays the exhaust port effect of air.
As shown in Figure 1, be provided with convection current chamber 710 at the rear of the backplate 150 that is equivalent to cooking cavity 101 back sides.Convection current chamber 710 is communicated with cooking cavity 101.In addition, in fact convection current chamber 710 is formed by backplate 150 and the convective cover 720 that is positioned at backplate 150 the insides.Convective cover 720 is positive open flat hexahedral shape substantially.
As shown in Figure 3, Figure 4, in convection current chamber 710, be provided with convection heater 730 and convection fan 740.Convection heater 730 can use on the whole the sheathed heater (Sheath Heater) by the ring structure bending.Convection fan 740 is positioned at convection heater 730, is the center rotation with the feathering axis on its fore-and-aft direction.In addition, convection fan 740 is discharged along diametric(al) after sucking air from its core.Convection heater 730 and convection fan 740 are used for the food with 101 inside, convection type heating cooking chamber.That is, when convection fan 740 drove, the air of convection heater 730 heating made the food in the cooking cavity 101 obtain convection heating in cooking cavity 101 and convection current chamber 710 inner loop.
For the electric heating that allows convection heater 730 produce passes more equably to cooking cavity 101 inside, in convection current chamber 710, be provided with the 1st air guide element 750 under the effect that blows of convection fan 740.The 1st air guide element 750 allows the bight of the air flow cooking cavity 101 that convection fan 740 discharges.For this reason, as shown in Figure 5, the 1st air guide element 750 is along the diametric(al) of convection fan 740, forwards, promptly to cooking cavity 101 inclination several angles.In addition, the 1st air guide element 750 is positioned at asymmetrical position with respect to the rotating center of convection fan 740.Thereby the air that is heated by convection heater 730 can only not flow to the specific part of cooking cavity 101, but can produce convection current in the gamut of cooking cavity 101 equably.
In the convective cover 720 that is equivalent to 710 outsides, convection current chamber, be provided with convection current motor 760.Convection current motor 760 is used to drive convection fan 740.Convection current motor 760 by the cooling power distribution unit after, suction opening 151 leaked-in airs by backplate 150 cool off.
In addition, as Fig. 1, shown in Figure 3, plate 150 is provided with back cover 770 overleaf.Back cover 770 has the suction opening 151 that can cover backplate 150, the size of discharge aperture 157.Thereby, form between plate 150 and the back cover 770 overleaf and allow the path of discharging by the discharge aperture 157 of backplate 150 by suction opening 151 leaked-in airs of backplate 150.
Be provided with the 3rd air register 530 between plate 150 and the back cover 770 overleaf.The 3rd air register 530 the spatial division between backplate 150 and the back cover 770 become to allow the air flows behind the cooling upper portion heater assembly 200 path and allow the path of the air flows behind the cooling high-tension transformer 105.Here, convection current motor 760 is positioned on the path of the air flows of cooling behind the high-tension transformer 105.
As shown in Figure 1, on the right flank (accompanying drawing is as the criterion) of wainscot 130, be provided with microwave guide 540.The air behind 540 coolings of microwave guide magnetron 104 and the microwave water conservancy diversion of magnetron 104 emissions are in cooking cavity 101.For this reason, the two ends of microwave guide 540 are communicated with cooking cavity 101 and magnetron 104 respectively.
As shown in Figure 6, (accompanying drawing is as the criterion) is provided with discharge conduit 550 on the left surface of the wainscot 130 that is positioned at microwave guide 540 opposition sides.Discharge conduit 550 by microwave guide 540 water conservancy diversion to cooking cavity 101 inside and the air conducting after flowing through cooking cavity 101 to the below.Therefore, discharge conduit 550 can be the hexahedral shape of bottom surface opened.
Though diagram is not provided with temperature transducer and humidity transducer on discharge conduit 550.Temperature transducer and humidity transducer are used for perception through being discharged from the temperature and humidity of the air of pipeline 550 water conservancy diversion behind the cooking cavity 101.
In addition, be provided with lower heater 780 in the space between bottom panel 120 and base panel 160.Lower heater 780 produces the electric heating that the food to cooking cavity 101 inside heats.Lower heater 780 can use ceramic heater (Ceramics Heater).The air cooling that lower heater 780 is blowed downwards by the 1st and the 2nd fan component 300,400.In addition, between the bottom panel 120 in lower heater 780 the place aheads and base panel 160, be provided with rotary tray motor 790.Rotary tray motor 790 provides power to the rotating disk that can be rotatably set in cooking cavity 101 bottom surfaces (figure slightly).The air cooling identical with lower heater, that rotary tray motor 790 is also blowed downwards by the 1st and the 2nd fan component 300,400.Be provided with the 4th air register 560 at bottom panel 120 that is positioned at lower heater 780 and rotary tray motor 790 right sides (accompanying drawing is as the criterion) and the space between the base panel 160.The 4th air register 560 forms longways along fore-and-aft direction is long, prevents to flow to, the air inflow behind cooling lower heater 780 and the rotary tray motor 790 is positioned at the right flank (accompanying drawing is as the criterion) of wainscot 130 and the space between shell 170 right flanks (accompanying drawing is as the criterion) in the space between bottom panel 120 and the base panel 160 in.
In addition, as shown in Figure 7, on housing 100, be provided with two bolt plates 810.Under the state of the door 820 sealing cooking cavities that bolt plate 810 will illustrate below, prevent its any rotation.Bolt plate 810 is fixed by assembling part such as screws under the state of upper end that closely is contacted with front panel 140 inside two sides ends and wainscot 130 side face upper end.Like this, bolt plate 810 with housing 100 orthogonal both directions on be fixed, in the time of can preventing shutter door 820 because the phenomenon that is subjected to displacement of external force effect.
As shown in Figure 1, in order to open and close cooking cavity 101, be provided with door 820 with being allowed a choice.Door 820 is the center with the articulated elements 821 that is arranged on its lower end, the inside, and rotate up and down the upper end, opens and closes cooking cavity 101 in the mode of drop-down (pull-down).The lower end of door 820 upper end and control panel 190 mutually across a certain distance.In addition, door 820 front is positioned on the positive identical plane with control panel 190.
On door 820, be provided with two bolt hooks 823.Bolt hook 823 is combined on the bolt plate 810 under the state of door 820 sealing cooking cavities 101.For this reason, bolt hook 823 is arranged on the upper end of door 820 inside two sides ends corresponding to bolt plate 810.
Path to microwave oven embodiment of the present invention describes below.
As shown in Figure 1, be formed with the 1st path P1 (not marking among the figure) on the top of housing 100.The 1st path P1 is arranged between some in the end face of top panel 110 and backplate 150, shell 170 and the side.Therefore, the 1st path P1 comprises the part in the distribution chamber 103 of power distribution units such as being provided with magnetron 104 and high-tension transformer 105.In addition, the 1st path P1 by the 1st and the 2nd fan component 300,400 blow, the path of the air flows of suction port 141 by front panel 140 and the 6th path P6 that the inlet hole 610 that sucks grid 600 is inhaled into, distribution chamber suction opening 143 by backplate 140 will illustrate below flowing to.
Be formed with the 2nd path P2 (not marking among the figure) on the top of housing 100.The 2nd path P2 comprises the part that upper portion heater assembly 200 is set in distribution chamber 103.In the 2nd path P2, flowing when flowing through the 1st path P1 to high-tension transformer 105 cooled part air.In addition, flow through the 1st fan 420 of air flow the 2nd fan component 400 behind the 2nd path P2.
In addition, be formed with the 3rd path P3 in the inside of upper portion heater assembly 200.The 3rd path P3 and the 1st path P1 are isolated.The air that is flowing among the 3rd path P3 cools off upper portion heater assembly 200.Flow through the 7th path P7 that the heater suction opening 145 of air by backplate 150 behind the 3rd path P3 will illustrate below flowing to.
Be provided with the 4th path P4 (not marking among the figure) on the right side of housing 100 (accompanying drawing is as the criterion).The 4th path P4, in fact right flank (accompanying drawing is as the criterion) and the microwave guide 540 by wainscot 130 surrounds.The 4th path P4 allows the part air that is blown into the 1st path P1 by the 1st fan component 300, promptly allows the path that is blown into the air flows of the 1st path P1 by the 1st fan 320 of the 1st fan component 300.That is the air that flows to cooking cavity 101 that in the 4th path P4, is flowing and cooling off magnetron 104 backs, comprise microwave.For this reason, the two ends of the 4th path P4 are communicated with the 1st path P1 and cooking cavity 101 respectively.
Be formed with the 5th path P5 (with reference to Fig. 6) that the left surface (accompanying drawing is as the criterion) by the left surface (accompanying drawing is as the criterion) of wainscot 130 and shell 170 surrounds in the left side of housing 100 (accompanying drawing is as the criterion).In the 5th path P5, flowing when flowing through the 2nd path P2 behind the cooling upper portion heater assembly 200 indirectly air and flow through the 4th path P4 after flow through the air of cooking cavity 101.Though the 5th path P5 separates with the 1st and the 2nd path P1, P2 on the whole by the 2nd air register 520, the open communication 525 by the 2nd air register 520 partly is communicated with the 2nd path P2.
In addition, between the backplate 150 that is equivalent to housing 100 rear portions and convective cover 720 and back cover 770, be formed with the 6th path P6 (with reference to Fig. 6).In addition, the 6th path P6 allows the part air that flows through the 1st path P1, promptly allows the path of the air flows of cooling behind the high-tension transformer 105.For this reason, the 6th path P6 is by the distribution chamber suction opening 153 and distribution chamber 103 of backplate 150, and promptly the 1st path P1 is communicated with.On the 6th path P6, be provided with convection current motor 760.
Be provided with the 7th path P7 at the rear portion of housing 100.In fact the 7th path P7 is identical with the 6th path P6, is formed between backplate 150, convective cover 720 and the back cover 770, separates by the 3rd air register 530 and the 6th path P6.In addition, the 7th path P7 promptly is communicated with the 3rd path by the inside of heater suction opening 155 with the upper portion heater assembly 200 of backplate 150.
Be formed with the 8th path P8 (Fig. 6 is as the criterion) in the bottom of housing 100.The 8th path P8 is formed between bottom panel 120 and the base panel 160.The 8th path P8, the left end on its accompanying drawing is communicated with the underpart of the 5th path P5.In addition, the 8th path P8 is communicated with the 6th path and the 7th path P7 by the discharge aperture 157 of backplate 150.In addition, the 8th path P8 is communicated with indoor by the exhaust port 143 of front panel 140.But the 8th path P8 obtains substantial division by the 4th air register 560 and the 1st path P1.In the 8th path P8, be provided with lower heater 780 and rotary tray motor 790.
With reference to the accompanying drawings the upper portion heater assembly in the embodiment of the invention is elaborated.
Shown in Fig. 8,9,10, the upper portion heater assembly 200 that constitutes the embodiment of the invention comprises heater support 210, two heater 220A, 220B, reflector the 230, the 1st heater housing the 240, the 2nd heater housing 250 and connecting tubes 260.
In addition, on reentrant part 231, be formed with a plurality of cooling hole 233.Cooling hole 233 is used to cool off heater 220A, 220B.As shown in Figure 9,233 of cooling hole are formed on 231 spaced apart from each other of reentrant part and the end face.At length, cooling hole 233 is not formed on the face in opposite directions of reentrant part 231.This be for prevent among heater 220A, the 220B some, promptly the 1st heater 220A carries out cooled air, flow to another, i.e. the phenomenon of the 2nd heater 220B.In addition, cooling hole 233 is by the difference of the air flue of cooling heater 220A, 220B, and its diameter is different.At length, be positioned at the cooling hole 233 of cooling hole 233 diameters of upstream side greater than the downstream side.This is in order to allow the air that is used to cool off heater 220A, 220B when its path flows heater 220A, 220B be cooled off.
The 1st heater housing 240 covers the 1st and the 2nd heater 220A, 220B and the reflector 230 that is supported by heater support 210.In fact the 1st heater housing 240 is also used as allows the path of air flows of cooling the 1st and the 2nd heater 220A, 220B.That is, between the end face of top panel 110 and the 1st heater housing 240 inner faces, be formed with the 3rd path P3 of cooling the 1st and the 2nd heater 220A, 220B.
In the present embodiment, the 1st heater housing 240 is the hexahedral shape with rectangular cross-section structure.In addition, the front end in the left side on the length direction of the 1st heater housing 240 and the back side are formed with entrance part 241 and export department 243 respectively.The entrance part 241 of the 1st heater housing 240 has played the effect of the inlet that air that the 2nd relief opening 434 that makes the 2nd fan 430 by the 2nd fan component in order to cool off heater 220A, 220B discharges sucks.The export department 243 of the 1st heater housing 240 allows entrance part 241 leaked-in airs by the 1st heater housing 240, behind cooling heater 220A, the 220B, and the outlet of discharge.The entrance part 241 of the 1st heater housing 240 is communicated with connecting tube 260.In addition, the export department 245 of the 1st heater housing 240 is communicated with the suction opening 151 of backplate 150.The entrance part 241 of the 1st heater housing 240 and the position of export department 243 are decided by the relative position of the heater assembly 200 relative with the suction opening 151 of the 2nd relief opening 434 of the 2nd fan 430 of the 2nd fan component 400 and backplate 150.
As shown in figure 10, on the 1st heater housing 240, be formed with the 2nd air register 245.245 shuntings of the 2nd air register make it to flow to the 1st heater 220A and the 2nd heater 220B respectively by the 1st heater housing 240 suction ports 241 leaked-in airs.For this reason, the 2nd air guide element 245 comprises the 1st guide portion 246 of extending to the 1st heater housing 240 inside from the entrance part 241 of the 1st heater housing 240, and, press the 2nd guide portion 247 that the 1st heater housing 240 length directions extend from an end of the 1st guide portion 246 in order to mark off the air that cools off the 1st and the 2nd heater 220A, 220B respectively.Here, the 1st guide portion 246 halves the entrance part 241 of the 1st heater housing 240 in the mode with equal flows sectional area.In addition, the appropriate location of the 2nd guide portion 247 between the 1st and the 2nd heater 220A, 220B allows the air flows sectional area that flows to the 2nd heater 220B greater than the air flows sectional area that flows to the 1st heater 220A.Thereby, entrance part 241 leaked-in airs by heater housing 240 with and the spacing of the 2nd fan component 400 irrelevant, always the amount with equalization flows to the 1st and the 2nd heater 220A, 220B.
In addition, the 2nd heater housing 250 prevents that the electric heating of the 1st and the 2nd heater 220A, 220B from passing to power distribution unit.For this reason, the 2nd heater housing 250 covers the part of 1st heater housing 240 adjacent with high-tension transformer 105.
As shown in Figure 8, on the 1st heater housing 240, be provided with two heat responsive devices 270.When heat responsive device 270 does not drive at the 2nd fan component 400, be used for perception upper portion heater assembly 200, i.e. the temperature of heater 220A, 220B.When the 2nd fan component 400 drove, heat responsive device 270 can not detect the temperature of heater 220A, 220B.
The 2nd fan component and the 2nd air register to microwave oven embodiment of the present invention is elaborated with reference to the accompanying drawings.
Shown in Figure 11,12,13, in fact the 2nd fan component 400 is fixed on the housing 100 with the state that is installed on the 2nd air register 520.That is, when the 2nd air register 520 is divided the 1st path P1 and the 5th path P5, be used to install the 2nd fan component 400, play the effect of blower tray.
On the 2nd air register 520, be provided with two exhaust ports 521,523.In the exhaust port 521,523 with the 2nd air register 520, be arranged in the 1st exhaust port 521 that is called of figure rear end below, be arranged in the 2nd exhaust port 523 that is called of figure front end.The the 1st and the 2nd exhaust port 521,523 of the 2nd air register 520 is cut by the part of the 2nd air register 520 and forms.The the 1st and the 2nd exhaust port 521,523 of the 2nd air register 520 forms with different mutually sectional areas.That is, the 2nd exhaust port 523 of the 2nd air register 520 forms with littler area with respect to the 1st exhaust port 521 of the 2nd air register 520.
The 1st fan 420 of the 2nd fan component 400 (below be called " the 1st fan ") is fixed on the back (accompanying drawing is as the criterion) of the fan electromotor 410 of the 2nd fan component 400.The 1st fan 420 comprises fan casing 421 and blade (figure slightly).Be formed with suction unit (figure slightly) in fan casing 421 back of the 1st fan 420.The suction unit of the 1st fan 420 is the parts that suck air.In addition, the side in the periphery of the 1st fan 420 fan casings 421 is formed with exhaust portion 423.The exhaust portion of the 1st fan 420 is used for exhausting air, has the area corresponding with the 1st exhaust port 521, rectangular in shape.
The 2nd fan 430 of the 2nd fan component 400 (below be called " the 2nd fan ") is positioned at the front (accompanying drawing is as the criterion) of the fan electromotor 410 of the 2nd fan component 400.In addition, the 2nd fan 430 is identical with the 1st fan 420, also comprises fan casing 431 and blade 437.The fan casing 431 of the 2nd fan 430 is formed on the cardinal principle substantially horizontal identical with the fan casing 421 of the 1st fan 420 with drum.The blade 427 of the 2nd fan 430 can be the center in the fan casing 431 of the 2nd fan 430, with the horizontal axis, rotate by the counter clockwise direction among the figure.
In addition, as shown in figure 12, be formed with suction unit 432 and the 1st and the 2nd exhaust portion 433,434 on the fan casing 431 of the 2nd fan 430.The suction unit 432 of the 2nd fan 430 is positioned at the front (accompanying drawing is as the criterion) of the fan casing 431 of the 2nd fan 430, by the suction unit 432 suction air of the 2nd fan 430.In addition, the 1st exhaust portion 433 of the 2nd fan 430 with the 2nd exhaust port 523 corresponding areas of the 2nd air register 520, form by rectangular shape.In addition, the 2nd exhaust portion 434 of the 2nd fan 430 is positioned at the position angled with the 1st exhaust portion 433 of the 2nd fan 430, is positioned at the side of outer circumferential face of the fan casing 431 of the 2nd fan 430.Thereby the 2nd fan 430 can be called the 1st and the 2nd exhaust portion 433,434 by the 2nd fan 430, by the two-way fan of different mutually both direction exhausting airs.
In addition, as shown in figure 13, in order to allow the 2nd fan 430 from the both direction exhausting air, the 1st and the 2nd exhaust portion 433,434 of the 2nd fan 430 will satisfy following 3 conditions:
(1) with the sense of rotation of blade, be that air-flow direction is as the criterion, from the inlet side end of the 1st and the 2nd exhaust portion 433,434 from fan casing inner peripheral surface to beeline D1, D3 the blade peripheral surface respectively greater than on the outlet side end of the 1st and the 2nd exhaust portion 433,434 from fan casing inner peripheral surface to beeline D2, D4 the blade peripheral surface.
(2) sense of rotation with blade is as the criterion, on the outlet side end of the 1st and the 2nd exhaust portion from fan casing inner peripheral surface to beeline D2, D4 the blade peripheral surface respectively greater than on the 2nd and the 1st exhaust portion from the inlet side end to fan casing inner peripheral surface and beeline D3, D1 the blade peripheral surface.
(3) sense of rotation with blade is as the criterion, and the 1st and the 2nd exhaust portion is not less than central angle A3 between the 1st exhaust portion inlet side end and the 2nd exhaust portion outlet side end and the central angle A4 between the 1st exhaust portion outlet side end and the 2nd exhaust portion inlet side end respectively with respect to central angle A1, the A2 of blade rotating center.
If relation is organized into inequality, the inequality below then the 1st exhaust portion 433 of the 2nd fan 430 and the 2nd exhaust portion 434 will satisfy respectively:
(1)D1＞D2?and?D3＞D4
(2)D2＞D3?and?D4＞D1
(3)A1＞＝A3?and?A2＞＝A4
Condition (1), (2) are the sufficient and necessary conditions by the 1st and the 2nd exhaust portion 433,434 exhausting airs of the 2nd fan 430, and condition (3) is actually for the 1st and the 2nd exhaust portion 433,434 exhausting airs by the 2nd fan 430 and needs satisfied condition though be not its sufficient and necessary condition.
The 1st exhaust portion 433 by regulating the 2nd fan 430 or the area of the 2nd exhaust portion 434 can be regulated the air quantity of discharging by the 1st exhaust portion 433 or the 2nd exhaust portion 434 of the 2nd fan 430.At length, the area of the 1st exhaust portion 433 by reducing the 2nd fan relatively can increase the air quantity that the 2nd exhaust portion 434 of the 2nd fan 430 is discharged relatively.
In addition, the the 1st and the 2nd exhaust portion 433,434 at the 2nd fan 430 has under the situation of the same area, and the area of the 2nd exhaust port 523 that can be by regulating the 2nd air register 520 is regulated the air quantity of discharging by the 1st and the 2nd exhaust portion 433,434 of the 2nd fan 430.That is, under the identical state of the area of the 1st and the 2nd exhaust portion 433,434 of the 2nd fan 430, if increase the 2nd exhaust port 523 areas of the 2nd air register 520, then the air quantity of discharging by the 1st exhaust portion 433 of the 2nd fan 430 increases relatively.On the contrary, reduce the area of the 2nd air register 520 the 2nd exhaust port 523, then the air quantity of discharging by the 2nd exhaust portion 434 of the 2nd fan 430 will increase.
The type of flow to air among the microwave oven embodiment of the present invention is described in detail with reference to the accompanying drawings.
At first, drive the 1st fan 320 of the 1st fan component 300 after, suction port 141 and the suction port 610 that suck grid 600 suction unit that flow into 1st fan 320 of 1st fan component 300 of indoor air by front panel 140.Inhaled air is discharged to the 1st path P1 by the exhaust portion of the 1st fan 320 of the 1st fan component 300, and magnetron 104 is cooled off.Here, be discharged to the air of exhaust portion of the 1st fan 320 of the 1st fan component 300, under the effect of the 1st air register 510, can not flow into the suction unit of the 1st fan 320 of the 1st fan component 300 again.In addition, the air behind the cooling magnetron 104 is under the state that comprises the microwave that is produced by magnetron 104, and by the 4th path P4, promptly the microwave guide 540, flow to cooking cavity 101 inside.Flow under the state of oil gas that the air of cooking cavity 101 inside produces in being included in the process of cooking food and water vapour, flow to the 8th path by the 5th path P5.
In addition, when when driving the 1st fan 320 of the 1st fan component 300, driving the 2nd fan 330 of the 1st fan component 300, suction port 141 and the inlet hole 610 that suck grid 600 suction unit that flow into 2nd fan 330 of 1st fan component 300 of indoor air by front panel 140.The exhaust portion of indoor air by the 1st fan 320 of the 1st fan component 300 of suction unit that flow into the 2nd fan 330 of the 1st fan component 300 is discharged to the 1st path P1, and high-tension transformer 105 is cooled off.Air behind the cooling high-tension transformer 105, major part wherein flows to the 6th path P6 by the distribution chamber suction opening 153 of backplate 150.After flowing to the air cooling convection fan 760 of the 6th path P6, the exhaust port 157 by backplate 150 flows to the 8th path.
In addition, when 200 work of upper portion heater assembly, the 2nd fan component 400 is also worked.When the 1st fan 420 of the 2nd fan component 400 is driven, suction port 141 and the suction opening 520 that suck grid 600 suction unit that flow into 1st fan 420 of 2nd fan component 400 of indoor air by front panel 140.In addition, by the 2nd fan 330 of the 1st fan component 300 by exhaust portion be discharged in the 1st path, air behind the cooling high-tension transformer 105, a part also flow into the suction unit of the 1st fan 420 of the 2nd fan component 400.The air of suction unit that is drawn into the 1st fan 420 of the 2nd fan component 400 cools off indirectly to upper portion heater assembly 200.In addition, the exhaust portion 423 of 1st fan 420 of air by the 2nd fan component 400 of suction unit that is drawn into the 1st fan 420 of the 2nd fan component is discharged, and flows through the 5th path P5, flows to the 8th path P8.Here, the air that the exhaust portion 423 of the 1st fan 420 by the 2nd fan component 400 is discharged can not flow into the 1st or the 2nd fan 420,430 of the 2nd fan component 400 again under the effect of the 2nd air register 520.
In addition, when driving, when driving the 2nd fan component the 2nd fan 430 with the 1st fan 420 of the 2nd fan component 400, suction port 141 and the suction opening 620 that suck grid 600 suction unit 432 that be inhaled into 2nd fan 430 of 2nd fan component 400 of air by front panel 140.Be drawn into the air of suction unit 432 of the 2nd fan 430 of the 2nd fan component, its part is discharged to the 5th path P5 by the 1st discharge portion 433 of the 2nd fan 430 of the 2nd fan component 400, flows to the 8th path P8.Here, exhaust portion 433 rows of the 2nd fan 430 by the 2nd fan component 400 are to the air of the 5th path P5, the air that is discharged to the 5th path P5 with the exhaust portion of the 1st fan 420 by the 2nd fan component 400 is identical, can not flow into the suction unit 432 of the 2nd fan 430 of the 2nd fan component 400 under the effect of the 2nd air register 520 again.
In addition, be drawn into the air of suction unit 432 of the 2nd fan 43 of the 2nd fan component 400, its part flows to the 3rd path P3 by the 2nd exhaust portion 434 of the 3rd fan of the 2nd fan component 400, i.e. connecting tube 260 and the 1st heater housing 240 inside.The air that flow to the 3rd path P3 specifically, cools off the 1st and the 2nd heater 220B that constitutes upper portion heater assembly 200 upper portion heater assembly 200.Here, the air of cooling upper portion heater assembly 200 is shunted under the effect of the 2nd air guide element 245, and is diversed respectively to the 1st heater 220A and the 2nd heater 220B, can cool off the 1st and the 2nd heater 220A, 220B more effectively.In addition, the air of cooling upper portion heater assembly 200 flow to the 7th path P7 by the heater suction opening 155 of backplate 150, flows to the 8th path P8.The air that is flowing among the 7th path P7 is isolated mutually with the air that is flowing among the 6th path P6 under the effect of the 3rd air register 530.Thereby the air that is flowing among the 7th path P7 after being heated in the process of cooling upper portion heater assembly 200 can be to 760 heating of convection current motor.
The air that flow to the 8th path P8 by the 4th path P4 to the 7 path P7 is arranged to indoor by the exhaust port 143 of front panel 140.Here, be positioned at the air cooling that lower heater 780 on the 8th path P8 and rotary tray motor 790 are flowing in the 8th path P8.Certainly, flow in the air of the 8th path P8, though cooling upper portion heater 200 backs are high temperature airs by the 7th path P7 leaked-in air, but by comparison, very low by the 4th path P4 and the 6th path P6 leaked-in air temperature, thus the bulk temperature that is flowing in the air of the 8th path can be lower than the temperature of lower heater 780 and rotary tray motor 790.Thereby the air that is flowing among the 8th path P8 can cool off lower heater 780 and rotary tray motor 790.In addition, be flowing in air among the 8th path P8 between the right flank (accompanying drawing is as the criterion) of the right flank (accompanying drawing is as the criterion) of wainscot 130 that can be by not being formed with the 3rd path P3 under the effect of the 4th baffle plate 560 and shell 170 the space and flow into the suction unit of the 1st or the 2nd fan 430 of the 1st fan component 300 again.
In addition, upper portion heater assembly 200 is in halted state, such as only utilizing microwave to cook or/and when utilizing convection heater to cook, and 300 work of the 1st fan component, and the 2nd fan component 400 quits work.At length, even upper portion heater assembly 200 quits work, the 1st fan component 300 still drives in the same manner as described above.But because the 2nd fan component 400 stops to drive, the therefore air behind cooling high-tension transformer 105 under the 2nd fan 330 of the 1st fan component 300 and the effect, its part can not flow to the 5th path P5.But, owing to be formed with open communication 525 on the 2nd air register 520, therefore even the 2nd fan component 400 quits work, the part air behind cooling high-tension transformer 105 under the effect of the 1st fan 320 of the 1st fan component 300 still can flow to the 5th path P5 by the open communication 525 of the 2nd air register 520.
In addition, when utilizing convection heater to cook, under the state that convection heater 730 is opened, convection current motor 760 carries out work.Thereby convection fan 740 is driven, and the heat that is sent by convection heater 730 carries out convection heating to the food in the cooking cavity 101.Here, the air that is blowed by convection fan 740 is comprising air state current downflow by convection heater 730 heating to cooking cavity 101 inside, quilt water conservancy diversion equably under 750 effects of the 1st air guide element.At length, the 1st air guide element 750 is the bight of the air conducting that contains convection heater 730 electric heating of discharging along the circumferencial direction of convection fan 740 to cooking cavity 101.Thereby the food of cooking cavity 101 inside can more effectively be carried out convection heating by the electric heating of convection heater 730.In basic fundamental thought range of the present invention,, can carry out other a lot of distortion, and interest field of the present invention should make an explanation according to the scope of accompanying Claim for personnel with related domain ABC.
Claims (11)
1. fan, it is characterized in that: comprise the fan casing that is formed with at least one suction unit and at least two exhaust portion, and can be rotatably set in the fan casing inside, suck air and the blade by described exhaust portion exhausting air by described suction portion, sense of rotation with described blade is as the criterion, on each exhaust portion inlet side end from fan casing inner peripheral surface to beeline D1, D3 the blade peripheral surface greater than on the outlet side end separately from fan casing inner peripheral surface to beeline D2, D4 the blade peripheral surface.
2. fan according to claim 1, it is characterized in that: the sense of rotation with described blade is as the criterion, on the outlet side end of each exhaust portion from described fan casing inner peripheral surface to beeline D2, D4 the blade peripheral surface respectively greater than and its on exhaust portion inlet side end adjacent on the opposite direction of blade sense of rotation, from fan casing inner peripheral surface to beeline D3, D1 the blade peripheral surface.
3. fan according to claim 1, it is characterized in that: the sense of rotation with blade is as the criterion, each exhaust portion with respect to central angle A1, the A2 of blade rotating center respectively greater than inlet side end and and its central angle A3, A4 between the outlet side end of exhaust portion adjacent on the opposite direction of blade sense of rotation separately.
4. fan according to claim 1 is characterized in that: by being adjusted in the amount of regulating the air of discharging by exhaust portion from fan casing inner peripheral surface to the difference of the beeline the blade peripheral surface on described exhaust portion inlet side end or the outlet side end.
5. fan according to claim 1 is characterized in that: by be adjusted on the some outlet sides end in the described exhaust portion from fan casing inner peripheral surface to the beeline the described blade peripheral surface and and its amount on exhaust portion inlet side end adjacent on the opposite direction of blade sense of rotation, regulate the air of discharging from fan casing inner peripheral surface to the difference of the beeline the blade peripheral surface by described relief opening.
6. fan according to claim 1 is characterized in that: regulate the amount of the air of discharging by relief opening with respect to the central angle of blade rotating center by in the described exhaust portion of described blade sense of rotation adjusted any.
7. fan according to claim 1 is characterized in that: by regulating any inlet side end and and its central angle between the outlet side end of exhaust portion adjacent on the opposite direction of the blade sense of rotation amount of regulating the air of discharging by described relief opening in the described relief opening.
8. fan, it is characterized in that: comprise fan casing and can be rotatably set in described fan casing inside, suck air and the blade by described exhaust portion exhausting air by described suction unit with at least one suction unit and at least two exhaust portion, sense of rotation with described blade is as the criterion, long-pending long-pending greater than described housing inner peripheral surface and the flow profile between the described blade peripheral surface on outlet side end separately from described fan casing inner peripheral surface to the flow profile the described blade peripheral surface on the described exhaust portion inlet side end.
9. fan according to claim 8, it is characterized in that: the sense of rotation with described blade is as the criterion, described fan casing inner peripheral surface on any the outlet side end in described exhaust portion and the flow profile integration between the described blade peripheral surface not greater than and it is long-pending at the fan casing inner peripheral surface on the inlet side end of exhaust portion adjacent on the opposite direction of blade sense of rotation and the flow profile between the blade peripheral surface.
10. fan according to claim 8, it is characterized in that: the sense of rotation with described blade is as the criterion, in the described exhaust portion any with respect to central angle A1, the A2 of described blade rotating center greater than inlet side end and and its central angle A3, A4 between the outlet side end of exhaust portion adjacent on the opposite direction of blade sense of rotation separately.
11. a microwave oven is characterized in that: the fan that comprises housing, is arranged on a plurality of parts in the housing and is formed for cooling off in the claim 1～10 of air-flow of described parts each at least by both direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810151231A CN101666323A (en) | 2008-09-03 | 2008-09-03 | Fan and microwave oven using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810151231A CN101666323A (en) | 2008-09-03 | 2008-09-03 | Fan and microwave oven using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101666323A true CN101666323A (en) | 2010-03-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810151231A Pending CN101666323A (en) | 2008-09-03 | 2008-09-03 | Fan and microwave oven using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN101666323A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765354A (en) * | 2016-11-17 | 2017-05-31 | 广东美的厨房电器制造有限公司 | Microwave cooking device |
| CN112137435A (en) * | 2020-08-28 | 2020-12-29 | 宁波方太厨具有限公司 | Impeller structure for cooking equipment and oven with same |
| CN112797013A (en) * | 2020-12-31 | 2021-05-14 | 广东美的厨房电器制造有限公司 | Fan assembly and cooking utensil |
-
2008
- 2008-09-03 CN CN200810151231A patent/CN101666323A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765354A (en) * | 2016-11-17 | 2017-05-31 | 广东美的厨房电器制造有限公司 | Microwave cooking device |
| CN106765354B (en) * | 2016-11-17 | 2018-09-04 | 广东美的厨房电器制造有限公司 | Microwave cooking device |
| CN112137435A (en) * | 2020-08-28 | 2020-12-29 | 宁波方太厨具有限公司 | Impeller structure for cooking equipment and oven with same |
| CN112797013A (en) * | 2020-12-31 | 2021-05-14 | 广东美的厨房电器制造有限公司 | Fan assembly and cooking utensil |
| CN112797013B (en) * | 2020-12-31 | 2023-08-18 | 广东美的厨房电器制造有限公司 | Fan assembly and cooking utensil |
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Application publication date: 20100310 |