CN114287789A - Steaming and baking integrated machine - Google Patents
Steaming and baking integrated machine Download PDFInfo
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- CN114287789A CN114287789A CN202111526610.1A CN202111526610A CN114287789A CN 114287789 A CN114287789 A CN 114287789A CN 202111526610 A CN202111526610 A CN 202111526610A CN 114287789 A CN114287789 A CN 114287789A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
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Abstract
The invention relates to a steaming and baking integrated machine which comprises an inner container, wherein a circulating fan is installed on a back plate of the inner container, a hot air baffle is arranged on the rear side of an inner cavity of the inner container, a hot air chamber is formed by the hot air baffle and the back plate of the inner container in a surrounding manner, an impeller of the circulating fan is positioned in the hot air chamber, a heating pipe is arranged on the outer periphery of the impeller, the circulating fan further comprises a rotating shaft extending forwards and backwards, the middle part of the rotating shaft penetrates through a central shaft hole of the impeller, a rotor is arranged at the rear end of the rotating shaft, and a stator capable of interacting with the rotor to drive the rotating shaft to rotate is arranged on the rear surface of the back plate of the inner container. The invention can drive the rotating shaft to rotate by utilizing the interaction of the stator and the rotor inside and outside the inner container, so that a hole is not required to be formed in the inner container, the air tightness of the inner container is further favorably ensured, the cooking efficiency is favorably improved, and particularly in steaming cooking.
Description
Technical Field
The invention relates to the field of cooking devices, in particular to a steaming and baking integrated machine.
Background
The cooking devices with baking function such as electric oven, steaming and baking integrated machine are generally provided with a hot air baffle at the rear side of the inner cavity of the inner container, the hot air baffle and the back plate of the inner container enclose a hot air chamber, a circulating fan is installed on the back plate of the inner container, the impeller of the circulating fan is positioned in the hot air chamber, and the periphery of the impeller is provided with a heating pipe. In the cooking process, the circulating fan rotates, gas in the inner container enters the hot air chamber through the air inlet on the hot air baffle, and the gas entering the hot air chamber flows back to the inner container through the air outlet on the hot air baffle under the action of centrifugal force of the impeller after being heated.
The existing circulating fan is installed on a back plate of the liner, specifically, a motor of the circulating fan is installed on the rear surface of the back plate of the liner, a rotating shaft of the circulating fan penetrates into the liner through a large opening formed in the back plate of the liner, and an impeller of the circulating fan penetrates through the front end of the rotating shaft. The installation circulating fan of trompil on the backplate of inner bag can cause the influence to the leakproofness of inner bag, and the inner bag leakproofness can produce cooking device's culinary art effect, especially under the mode of steaming. In addition, like this under the circulating fan rotational state, the pivot can ceaselessly with friction such as bearing housing to make circulating fan's noise at work great, and then increase cooking device's whole noise at work.
In addition, the existing circulating fan generally has the problem of small air volume, so that the flow quantity and the flow speed of air flow in the inner container are influenced, and the cooking effect of the cooking device is further influenced. For example, chinese utility model patent No. ZL201821666238.8 (No. CN209569178U) discloses a circulation fan, including the hub plate and enclose the flabellum board of establishing in the hub plate periphery, the flabellum board includes the first plate body and the flabellum board that are connected with the hub plate and with hub plate parallel arrangement, and this flabellum board is fixed on the first side of first plate body along its direction of rotation and is perpendicular to first plate body, and the centre of a circle of above-mentioned hub plate is located in the extending direction of first side.
Disclosure of Invention
The invention aims to solve the first technical problem of providing a steaming and baking integrated machine with a good liner sealing property aiming at the prior art.
The second technical problem to be solved by the invention is to provide a steaming and baking all-in-one machine with long service life aiming at the prior art.
The third technical problem to be solved by the invention is to provide a steaming and baking all-in-one machine with low working noise aiming at the prior art.
The fourth technical problem to be solved by the invention is to provide a steaming and baking integrated machine with high cooking efficiency aiming at the prior art.
The technical scheme adopted by the invention for solving at least one technical problem is as follows: a steaming and baking integrated machine comprises an inner container, wherein a circulating fan is installed on a back plate of the inner container, a hot air baffle is arranged on the rear side of an inner cavity of the inner container, a hot air chamber is formed by the hot air baffle and the back plate of the inner container in an enclosing mode, an impeller of the circulating fan is located in the hot air chamber, and a heating pipe is arranged on the outer periphery of the impeller.
Further, the rotor is annularly sleeved at the rear end of the rotating shaft, the front surface of the liner back plate is recessed towards the rear to form a disc-shaped mounting groove protruding out of the rear surface of the back plate, the rotor is accommodated in the mounting groove, and the stator is annularly sleeved on the outer side surface of the mounting groove. On the one hand, the rotor and the stator can be stably installed, and on the other hand, the stator and the rotor can interact better.
Further, the stator and the rotor are magnetic blocks, the magnetic property of the stator and the magnetic property of the rotor are the same, and a coil is clamped in the magnetic block of the stator. Therefore, the coil in the stator forms a magnetic field in a power-on state, so that the rotor is driven to rotate, and the rotating shaft is driven to rotate. And under the non-energized state of the coil, the rotating shaft can also rotate in a small range through the interaction of the magnetic block in the stator and the rotor, so that the gas in the inner container is slowly exchanged with the outside through the small-range rotation of the impeller under the power-off state of the steaming and baking integrated machine or the non-working state of the circulating fan, and the problem of peculiar smell of the inner container after long-term placement is avoided. Meanwhile, the starting time of the circulating fan can be reduced, so that the current is reduced, and the coil is prevented from being overheated.
Further, the inner circumferential surface of the stator and the outer circumferential surface of the rotor are both irregular surfaces. The stator and the rotor can be provided with auxiliary force for interaction through designing the special-shaped surface, so that the phenomenon that the coil load in the stator is overlarge in the starting process is avoided, and the service life of the stator is prolonged.
Further, the inner circumferential surface of the stator and the outer circumferential surface of the rotor are both in a tooth surface shape. This provides better assistance to the interaction of the stator and rotor.
Further, the rotating shaft is arranged in the central shaft hole of the hub plate in a hanging mode in a penetrating mode, the rotating shaft is further connected with an annular magnetic bearing seat in a sleeved mode, a bearing sleeve with the same magnetism as the bearing seat is arranged on the periphery of the bearing seat in a sleeved mode in a clearance mode, the bearing sleeve is fixedly arranged in the inner container, and in the interaction force of the bearing seat and the bearing sleeve, the sum of downward acting force and the gravity of the rotating shaft is equal to upward acting force. Thereby enable the unsettled setting of pivot, avoid the friction of pivot rotation in-process to reduce starting current, coil load is too big when avoiding starting, and can reduce the noise at circulating fan working process, under the condition of the same input power, because the pivot does not rub the rotation, thereby can accelerate the rotational speed of pivot, and then further increase circulating fan's the amount of wind.
Further, the bearing frame includes that the cover is even at the front end of above-mentioned pivot front bearing frame and the cover is even at the rear end's of pivot rear bearing frame, and correspondingly, above-mentioned bearing housing includes with above-mentioned front bearing frame matched with front bearing housing and with above-mentioned rear bearing frame matched with rear bearing housing, and wherein, front bearing housing fixes on the rear surface of above-mentioned hot-blast baffle, and above-mentioned rear bearing frame is located behind above-mentioned rotor, and above-mentioned rear bearing frame is fixed on the medial surface of above-mentioned mounting groove to enable the unsettled setting that the pivot is more stable.
Furthermore, the inner circumferential surface of the front bearing sleeve and the outer circumferential surface of the front bearing seat are respectively provided with a front flaring and a rear flaring, and are arranged in parallel from inside to outside at intervals, and the inner circumferential surface of the rear bearing sleeve and the outer circumferential surface of the rear bearing seat are respectively provided with a front flaring and a rear flaring and are arranged in parallel from inside to outside at intervals. Therefore, the interaction force between the front bearing sleeve and the front bearing seat, the interaction force between the rear bearing sleeve and the rear bearing seat and the gravity of the rotating shaft can be better balanced with each other, and the stability of the suspended rotating shaft is further improved.
Further, the middle part of the rotating shaft is sleeved with a shaft seat, the shaft seat is in a spherical table shape, the shaft seat is embedded in a central shaft hole of the hub plate, the impeller can rotate in a circumferential limiting mode relative to the shaft seat when the circulating fan is not in working, and the impeller is static relative to the shaft seat when the circulating fan is in working. Therefore, the impeller can better rotate relative to the rotor by a small amplitude through the interaction of the magnetic block in the stator and the rotor under the condition that the circulating fan does not work through the spherical shaft seat. And under the working state of the circulating fan, the rotating shaft and the impeller are relatively static and rotate synchronously through the rotation of the rotating shaft and air resistance.
Furthermore, the hole edge of the central shaft hole of the hub plate extends backwards along the circumferential direction to form a spherical shaft sleeve, the size of the shaft sleeve is matched with the rear end of the shaft seat, the shaft sleeve and the shaft seat are nested inside and outside, the inner side surface of the shaft sleeve can slide circumferentially relative to the outer side surface of the rear end of the shaft seat, and the impeller can rotate relative to the rotating shaft more stably through the surface-to-surface contact of the shaft sleeve and the shaft seat, or the impeller and the rotating shaft can rotate synchronously more stably. The shaft sleeve is provided with circumferentially extending sliding grooves at circumferential intervals, the surface of the rear end of the shaft seat is convexly provided with sliding columns which are in one-to-one correspondence with the sliding grooves, and the sliding columns are respectively inserted into the corresponding sliding grooves and slide back and forth in the corresponding sliding grooves along the extending direction of the sliding grooves, so that the impeller can be prevented from shifting in the rotating process relative to the rotating shaft.
Furthermore, the width of each sliding chute is gradually reduced along the rotation direction of the shaft sleeve, the section size of each sliding column is matched with the narrower end of the corresponding sliding chute, the front side of the wider end of each sliding chute is provided with a notch penetrating through the hole edge of the central shaft hole, each sliding column can penetrate through the notch of the corresponding sliding chute, and each sliding column is abutted against the narrower end of the corresponding sliding chute under the working state of the circulating fan. Thereby can guarantee the synchronous rotation that impeller and pivot are more firm, make things convenient for the dismouting between impeller and the pivot simultaneously.
Furthermore, a limit nut is connected to the front side of the shaft seat in a threaded manner on the rotating shaft, a limit ring step is arranged on the rear side of the shaft seat, the front end of the shaft seat abuts against the limit nut, the rear end of the shaft seat abuts against the front ring surface of the limit ring step, and the rear ring surface of the limit ring step abuts against the front end surface of the rotor. Therefore, the shaft seat can be more stably arranged on the rotating shaft.
Furthermore, first magnetic limiting parts are uniformly distributed on the impeller, second magnetic limiting parts uniformly distributed by taking the rotating shaft as the center are fixed on the rear surface of the liner back plate, and the magnetic poles of the second magnetic limiting parts are the same as those of the first magnetic limiting parts. Through the interaction between each first magnetism locating part and the second magnetism locating part like this to enable the more stable rotation of impeller, also can guarantee the stable installation of impeller simultaneously.
Further, each first magnetic limiting piece is a block and is fixed on each fan blade plate, and each second magnetic limiting piece is a circular ring fixed on the rear surface of the liner back plate. Therefore, the interaction force between each first magnetic limiting part and each second magnetic limiting part can be distributed more uniformly, and the rotating stability of the impeller is further ensured.
Further, circulating fan's impeller is including the wheel hub plate that has central shaft hole and the flabellum board of interval periphery setting at this wheel hub plate periphery, its characterized in that, each flabellum board all includes first plate body and the second plate body that forms by the lateral margin of wheel hub plate outwards extension along one of them surface of wheel hub plate, and this second plate body is fixed on first plate body along the first side of its direction of rotation and is mutually perpendicular with this first plate body, and the first plate body is along the first salient angle that forms the triangle-shaped that the outside end of its direction of rotation's second side outwards extends along the direction of rotation. Each second plate body is perpendicular with the first plate body that corresponds respectively to the effective area of sweeping the wind of increase impeller, the regional wind speed of the biggest limit footpath of increase impeller, and then the regional velocity of flow of reinforcing impeller increases the low pressure value that impeller central point put, finally reaches the effect that promotes the inside amount of wind of inner bag. Through set up first salient angle on each first plate body, can catch the air current of escaping from the negative pressure region through this first salient angle and adjacent second plate body mutually support to increase the air density of impeller effective action within range, catch more wind, promote the amount of wind, thereby improve the culinary art efficiency of steaming and baking all-in-one.
Furthermore, the extending direction of the second plate body in each fan blade plate deviates from the radial direction of the circle where the hub plate is located, so that the air volume of the circulating fan can be further increased.
Furthermore, the extending direction of the second plate body in each fan blade plate is deviated from the radial direction of the circle of the hub plate by an angle of 15-18 degrees. On the basis of ensuring the strength of the internal structure of the impeller, the maximum air quantity of the circulating fan is realized.
Furthermore, the outer side edges of the second plate bodies respectively extend vertically relative to the first plate bodies, and the inner side edges of the second plate bodies are respectively inclined from inside to outside in the direction away from the hub plate. On one hand, the negative pressure area of the impeller can be increased, the escape of airflow in the negative pressure area is reduced, and on the other hand, the effective wind sweeping area of the impeller can be further increased.
Furthermore, the outer edge of each first salient angle and the outer edge of the first plate body where the first salient angle is located are on the same arc line, so that the effective wind sweeping area of the impeller is further increased, the inner edge of each first salient angle is parallel to the extending direction of the adjacent second plate body, and the outer edge and the inner edge of each first salient angle are smoothly connected respectively, so that the impeller can capture more wind, and the wind volume is further improved.
Compared with the prior art, the invention has the advantages that: the rotor is arranged at the rear end of the rotating shaft of the circulating fan, the stator capable of interacting with the rotor to drive the rotating shaft to rotate is arranged on the rear surface of the liner back plate, and therefore the rotating shaft can be driven to rotate by the interaction of the stator and the rotor inside and outside the liner, holes do not need to be formed in the liner, the airtightness of the liner is guaranteed, cooking efficiency is improved, and particularly in steaming cooking.
Drawings
Fig. 1 is a schematic structural diagram of a steaming and baking integrated machine in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
fig. 3 is a partial structure exploded view of the steaming and baking integrated machine in embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure of FIG. 3 in another direction;
FIG. 5 is a cross-sectional view of the steaming and baking integrated machine in embodiment 1 of the present invention (the inner container is only a real back plate portion);
fig. 6 is a schematic structural diagram of an impeller according to embodiment 1 of the present invention (the first magnetic position-limiting element is not shown);
FIG. 7 is a schematic view of the structure of FIG. 6 in another direction;
FIG. 8 is a schematic view of the structure of FIG. 6 in still another direction;
FIG. 9 is a cross-sectional view of the steaming and baking integrated machine in embodiment 2 of the present invention (the inner container is only a part of the back plate);
fig. 10 is a schematic structural view of a stator in embodiment 2 of the invention;
fig. 11 is a partial structural schematic view of a circulation fan in embodiment 1 of the present invention;
FIG. 12 is an enlarged view of portion A of FIG. 5;
fig. 13 is an enlarged view of a portion B in fig. 9.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
as shown in fig. 1 to 8, 11 and 12, an all-in-one steaming and baking machine includes an inner container 1, a circulating fan 4 is installed on a back plate of the inner container 1, a hot air baffle 2 is installed at a rear side of an inner cavity of the inner container 1, the hot air baffle 2 and the back plate of the inner container 1 define a hot air chamber 20, an impeller 40 of the circulating fan 4 is located in the hot air chamber 20, and a heating pipe 3 is installed around an outer periphery of the impeller 40.
The circulation fan 4 further includes a front and rear extending shaft 43, and a middle portion of the shaft 43 is inserted into the central shaft hole 411 of the hub plate 41. In the prior art, the rotating shaft 43 of the circulating fan 4 is generally arranged on the liner 1 through a hole arranged on the back plate of the liner 1, and the hole can influence the sealing performance of the liner 1. To avoid this problem, the rear end of the rotating shaft 43 in the present invention is provided with a rotor 6 and the rear surface of the back plate of the inner container 1 is provided with a stator 5 capable of driving the rotating shaft 43 to rotate by interacting with the rotor 6. The interaction of the stator 5 and the rotor 6 inside and outside the inner container 1 can drive the rotating shaft 43 to rotate, and holes do not need to be formed in the inner container 1, so that the airtightness of the inner container 1 is guaranteed, the cooking efficiency is improved, and particularly in steaming cooking (the cooking efficiency is prevented from being influenced by steam leakage).
Further, the rotor 6 is annularly shaped and coupled to the rear end of the rotating shaft 43, the front surface of the back plate of the inner container 1 is recessed rearward to form a disc-shaped mounting recess 11 protruding outward from the rear surface of the back plate, the rotor 6 is accommodated in the mounting recess 11, and the stator 5 is annularly shaped and coupled to the outer side surface of the mounting recess 11. By means of the above arrangement, on the one hand a stable mounting of the rotor 6 and the stator 5, respectively, can be achieved, and on the other hand a better interaction of the stator 5 and the rotor 6 is enabled, so that the rotation of the shaft 43 can be driven better. Specifically, the stator 5 and the rotor 6 are both magnetic blocks and have the same magnetism, and a coil (not shown) is sandwiched in the magnetic block of the stator 5. In this way, the coils in the stator 5 are energized to form a magnetic field, thereby driving the rotor 6 to rotate, and further driving the rotating shaft 43 to rotate. In the non-energized state of the coil, the rotating shaft 43 can also rotate with a small amplitude through the interaction between the magnetic blocks in the stator 5 and the rotor 6. Like this evaporate roast all-in-one machine outage or circulating fan 4 under the unoperated state, rotate the gas that makes in the inner bag 1 through impeller 40 a small margin and have slow exchange with the external world, avoid the peculiar smell problem that the inner bag 1 was put for a long time, also can reduce the time that circulating fan 4 started simultaneously to reduce the electric current, avoid the coil overheated.
Further, in the present embodiment, the rotating shaft 43 is suspended and inserted into the central shaft hole 411 of the hub plate 41, the rotating shaft 43 is further sleeved and connected with an annular and magnetic bearing seat, a bearing sleeve having the same magnetism as the bearing seat is sleeved on the outer periphery of the bearing seat with a gap, the bearing sleeve is fixedly disposed in the inner container 1, and in the interaction force between the bearing seat and the bearing sleeve, the sum of the downward acting force and the gravity of the rotating shaft 43 is equal to the upward acting force. Enable the unsettled setting of pivot 43 like this, avoid the friction of pivot 43 rotation in-process to reduce starting current, coil load is too big when avoiding starting, and can reduce the noise at circulating fan 4 working process, simultaneously, under the condition of the same input power, because pivot 43 does not rub the rotation, thereby can accelerate the rotational speed of pivot 43, and further increase circulating fan 4's the amount of wind.
Preferably, the bearing housing includes a front bearing housing 711 sleeved on the front end of the rotating shaft 43 and a rear bearing housing 712 sleeved on the rear end of the rotating shaft 43, and accordingly, the bearing housing includes a front bearing housing 721 matched with the front bearing housing 711 and a rear bearing housing 722 matched with the rear bearing housing 712, wherein the front bearing housing 721 is fixed on the rear surface of the hot air baffle 2, the rear bearing housing 712 is located behind the rotor 6, and the rear bearing housing 712 is fixed on the inner side surface of the mounting groove 11, so that the rotating shaft 43 can be more stably suspended. Further preferably, the inner circumferential surface of the front bearing sleeve 721 and the outer circumferential surface of the front bearing housing 711 are both flared front to back and are spaced apart from each other in parallel, and the inner circumferential surface of the rear bearing sleeve 722 and the outer circumferential surface of the rear bearing housing 712 are both flared front to back and are spaced apart from each other in parallel. Therefore, the interaction force between the front bearing sleeve 721 and the front bearing seat 711, the interaction force between the rear bearing sleeve 722 and the rear bearing seat 712, and the gravity of the rotating shaft 43 can be balanced better, so as to further improve the stability of the suspended arrangement of the rotating shaft 43.
Further, a shaft seat 82 is sleeved on the middle portion of the rotating shaft 43, the shaft seat 82 is in a shape of a spherical table, the shaft seat 82 is nested in the central shaft hole 411 of the hub plate 41, the impeller 40 can rotate in a circumferential direction relative to the shaft seat 82 in a limited manner when the circulating fan 4 is not in operation, and the impeller 40 is stationary relative to the shaft seat 82 when the circulating fan 4 is in operation. Thus, by providing the shaft seat 82, the impeller 40 can better rotate by a small degree through the interaction between the magnetic blocks in the stator 5 and the rotor 6 when the circulating fan 4 is not in operation. In the operating state of the circulation fan 4, the rotation shaft 43 and the impeller 40 are stationary and stably rotate in synchronization with each other by the rotation of the rotation shaft 43 and the air resistance.
In the present embodiment, the hole edge of the central hole 411 of the hub plate 41 extends backward in the circumferential direction to form a spherical boss-shaped bushing 81, the bushing 81 is sized to fit the rear end of the axle seat 82, and the inner surface of the bushing 81 is slidable in the circumferential direction with respect to the outer surface of the rear end of the axle seat 82. The impeller 40 can be more smoothly rotated with respect to the rotation shaft 43 or the impeller 40 can be more stably rotated in synchronization with the rotation shaft 43 by the surface-to-surface contact of the bushing 81 with the shaft seat 82. The shaft sleeve 81 is provided with circumferentially extending sliding grooves 811 at circumferential intervals, the surface of the rear end of the shaft seat 82 is convexly provided with sliding posts 821 which are in one-to-one correspondence with the sliding grooves 811, and each sliding post 821 is respectively inserted into the corresponding sliding groove 811 and slides back and forth in the corresponding sliding groove 811 along the extending direction of the sliding groove 811, so that the impeller 40 can be prevented from being deviated in the rotating process relative to the rotating shaft 43. Further, the width of each of the sliding grooves 811 decreases in the rotational direction of the sleeve 81, the cross-sectional size of each of the spools 821 is matched with the narrower end of the corresponding sliding groove 811, the front side of the wider end of each of the sliding grooves 811 has a notch 8111 penetrating through the hole edge of the central shaft hole 411, each of the spools 821 can pass through the notch 8111 of the corresponding sliding groove 811, and each of the spools 821 abuts against the narrower end of the corresponding sliding groove 811 in the operating state of the circulating fan 4. Thereby can guarantee more stable synchronous rotation of impeller 40 and pivot 43, make things convenient for the dismouting between impeller 40 and the pivot 43 simultaneously.
In addition, in order to realize the stable installation of the shaft seat 82, a limit nut 91 is threadedly connected to the front side of the shaft seat 82 on the rotating shaft 43, a limit ring step 431 is disposed at the rear side of the shaft seat 82, the front end of the shaft seat 82 abuts against the limit nut 91, the rear end of the shaft seat 82 abuts against the front ring surface of the limit ring step 431, and the rear ring surface of the limit ring step 431 abuts against the front end surface of the rotor 6. In this embodiment, the stop ring 431 and the shaft 43 are an integral component.
In the present invention, the rotating shaft 43 is suspended, so the first magnetic position-limiting members 92 are uniformly distributed on the impeller 40, and the second magnetic position-limiting members 93 uniformly distributed centering on the rotating shaft 43 are fixed on the rear surface of the back plate of the inner container 1, and the magnetic poles of the second magnetic position-limiting members 93 are the same as the first magnetic position-limiting members 92. Through the interaction between the first magnetic limiting pieces 92 and the second magnetic limiting pieces 93, the impeller 40 can rotate more stably, and the impeller 40 can be stably installed. Specifically, each of the first magnetic stoppers 92 is a block and is fixed on each of the vane plates 42, and the second magnetic stopper 93 is a circular ring fixed on the rear surface of the back plate of the inner container 1. Therefore, the interaction force between each first magnetic limiting piece 92 and each second magnetic limiting piece 93 can be distributed more uniformly, and the stability of the rotation of the impeller 40 is further ensured.
Further, the impeller 40 of the present invention includes a hub plate 41 having a central axial hole 411 and a blade plate 42 spaced around the outer periphery of the hub plate 41. Each of the vane plates 42 includes a first plate 421 and a second plate 422, the first plate 421 and the second plate 422 are formed by extending the side edge of the hub plate 41 outward along one surface (in this embodiment, the front surface) of the hub plate 41, the second plate 422 is fixed to a first side edge of the first plate 421 along the rotation direction and is perpendicular to the first plate 421, and an outer end of the first plate 421 along a second side edge of the rotation direction extends along the rotation direction to form a triangular first convex angle 423. In this way, in the present invention, each second plate 422 is perpendicular to the corresponding first plate 421, so as to increase the effective air sweeping area of the impeller 40, increase the air speed in the area of the largest edge diameter of the impeller 40, further enhance the flow velocity in the area of the impeller 40, increase the low pressure value in the center of the impeller 40, and finally achieve the effect of increasing the air volume inside the liner 1. By providing the first convex angle 423 on each first plate 421, the first convex angle 423 and the adjacent second plate 422 cooperate with each other to capture the airflow escaping from the negative pressure region, thereby increasing the air density within the effective action range of the impeller 40, capturing more air, and increasing the air volume, as shown in fig. 7.
In the present embodiment, the extending direction of the second plate 422 of each of the fan blades 42 is deviated from the radial direction of the circle on which the hub plate 41 is located, so that the air volume of the circulation fan 4 can be further increased. Specifically, the deviation angle α of the extending direction of the second plate 422 in each of the fan blade plates 42 with respect to the radial direction of the circle on which the hub plate 41 is located is 15 ° to 18 ° (preferably, α is 15 °), and the maximum air volume of the circulating fan 4 is realized while the internal structural strength of the impeller 40 is ensured.
Further, the outer side of each of the second plate 422 extends vertically relative to the first plate 421, and the inner side of each of the second plate 422 is inclined from inside to outside in a direction away from the hub plate 41. On one hand, the negative pressure area of the impeller 40 can be increased, the escape of airflow in the negative pressure area is reduced, and on the other hand, the effective wind sweeping area of the impeller 40 can be further increased. The outer edge of each first convex angle 423 and the outer edge of the first plate 421 located on the outer edge of each first convex angle are on the same arc line, so that the effective air sweeping area of the impeller 40 is further increased, the inner edge of each first convex angle 423 is parallel to the extending direction of the adjacent second plate 422, and the outer edge and the inner edge of each first convex angle 423 are smoothly connected, so that the impeller 40 can capture more air, and the air volume is further increased.
Example 2:
as shown in fig. 9, 10 and 12, unlike embodiment 1, in the present embodiment, both the inner peripheral surface of the stator 5 and the outer peripheral surface of the rotor 6 are irregular surfaces. The stator 5 and the rotor 6 can be provided with auxiliary force through designing the special-shaped surface, so that the phenomenon that the coil load in the stator 5 is overlarge in the starting process of the circulating fan 4 is avoided, and the service life of the stator 5 is prolonged. Specifically, the inner circumferential surface of the stator 5 and the outer circumferential surface of the rotor 6 are both in a tooth surface shape, which can better provide the assisting force for the interaction between the stator 5 and the rotor 6.
Claims (19)
1. The utility model provides a steaming and baking all-in-one machine, includes inner bag (1), install circulating fan (4) on the backplate of inner bag (1), and the rear side of inner bag (1) inner chamber is provided with hot-blast baffle (2), hot-blast baffle (2) and the backplate of inner bag (1) enclose into hot-blast room (20), impeller (40) of above-mentioned circulating fan (4) are located this hot-blast room (20), and the outer periphery of this impeller (40) is equipped with heating pipe (3), characterized in that, circulating fan (4) still include front and back extension pivot (43), the middle part of this pivot (43) is worn and is linked in central shaft hole (411) of above-mentioned impeller (40), the rear end of this pivot (43) is provided with rotor (6) and be provided with on the rear surface of inner bag (1) backplate and be able to drive pivot (43) pivoted stator (5) with this rotor (6) interact.
2. An integrated steaming and baking machine according to claim 1, wherein the rotor (6) is annular and is coupled to the rear end of the rotating shaft (43), the front surface of the back plate of the inner container (1) is recessed rearward to form a disc-shaped mounting groove (11) protruding outward from the rear surface of the back plate, the rotor (6) is received in the mounting groove (11), and the stator (5) is annular and is coupled to the outer side of the mounting groove (11).
3. The steaming and baking all-in-one machine as claimed in claim 1, wherein the stator (5) and the rotor (6) are both magnetic blocks and have the same magnetism, and a coil is clamped in the magnetic block of the stator (5).
4. An integrated steaming and baking machine as claimed in claim 3, wherein the inner peripheral surface of the stator (5) and the outer peripheral surface of the rotor (6) are both shaped surfaces.
5. An integrated steaming and baking machine as claimed in claim 4, wherein the inner peripheral surface of the stator (5) and the outer peripheral surface of the rotor (6) are tooth-shaped.
6. The steaming and baking all-in-one machine as claimed in claim 1, wherein the rotating shaft (43) is suspended and inserted into the central shaft hole (411), the rotating shaft (43) is further sleeved with an annular magnetic bearing seat, a bearing sleeve with the same magnetism as the bearing seat is sleeved on the periphery of the bearing seat in a clearance manner, the bearing sleeve is fixedly arranged in the inner container (1), and in the interaction force of the bearing seat and the bearing sleeve, the sum of the downward acting force and the gravity of the rotating shaft (43) is equal to the upward acting force.
7. An integrated steaming and baking machine according to claim 6, wherein the bearing housing comprises a front bearing housing (711) sleeved on the front end of the rotating shaft (43) and a rear bearing housing (712) sleeved on the rear end of the rotating shaft (43), and accordingly, the bearing housing comprises a front bearing housing (721) fitted to the front bearing housing (711) and a rear bearing housing (722) fitted to the rear bearing housing (712), wherein the front bearing housing (721) is fixed on the rear surface of the hot air baffle (2), the rear bearing housing (712) is located behind the rotor (6), and the rear bearing housing (712) is fixed on the inner side surface of the mounting groove (11).
8. The steaming and baking all-in-one machine as claimed in claim 7, wherein the inner circumferential surface of the front bearing sleeve (721) and the outer circumferential surface of the front bearing seat (711) are both flared from front to back and are arranged in parallel at intervals from inside to outside, and the inner circumferential surface of the rear bearing sleeve (722) and the outer circumferential surface of the rear bearing seat (712) are both flared from front to back and are arranged in parallel at intervals from inside to outside.
9. An integrated steaming and baking machine according to claim 7, wherein the shaft seat (82) is sleeved on the middle part of the rotating shaft (43), the shaft seat (82) is in a shape of a spherical table, the shaft seat (82) is embedded in the central shaft hole (411), the impeller (40) can rotate in a limited circumferential direction relative to the shaft seat (82) when the circulating fan (4) is not operated, and the impeller (40) is static relative to the shaft seat (82) when the circulating fan (4) is operated.
10. An integrated steaming and baking machine according to claim 9, wherein the hole edge of the central shaft hole (411) extends backward in the circumferential direction to form a spherical boss-shaped sleeve (81), the sleeve (81) is sized to fit the rear end of the shaft seat (82) and is nested inside and outside, and the inner side surface of the sleeve (81) can slide in the circumferential direction relative to the outer side surface of the rear end of the shaft seat (82),
the shaft sleeve (81) is provided with sliding grooves (811) extending in the circumferential direction at intervals in the circumferential direction, the surface of the rear end of the shaft seat (82) is convexly provided with sliding columns (821) corresponding to the sliding grooves (811) one by one, and the sliding columns (821) are respectively inserted into the corresponding sliding grooves (811) and slide back and forth in the corresponding sliding grooves (811) along the extending direction of the sliding grooves (811).
11. An integrated steaming and baking machine as claimed in claim 10, wherein the width of each sliding groove (811) decreases progressively along the direction of rotation of the shaft sleeve (81), the cross-sectional size of each sliding pillar (821) matches with the narrower end of the corresponding sliding groove (811), the front side of the wider end of each sliding groove (811) has a notch (8111) penetrating through the hole edge of the central shaft hole (411), each sliding pillar (821) can penetrate through the notch (8111) of the corresponding sliding groove (811), and each sliding pillar (821) abuts against the narrower end of the corresponding sliding groove (811) in the operating state of the circulating fan (4).
12. An integrated steaming and baking machine as claimed in claim 9, wherein the front side of the shaft seat (82) of the rotating shaft (43) is connected with a limit nut (91) by screw thread, and the rear side of the shaft seat (82) is provided with a limit ring step (431), the front end of the shaft seat (82) abuts against the limit nut (91), the rear end of the shaft seat (82) abuts against the front ring surface of the limit ring step (431), and the rear ring surface of the limit ring step (431) abuts against the front end surface of the rotor (6).
13. The steaming and baking all-in-one machine according to any one of claims 6 to 12, wherein first magnetic stoppers (92) are uniformly distributed on the impeller (40), second magnetic stoppers (93) uniformly distributed around the rotating shaft (43) are fixed on the rear surface of the back plate of the inner container (1), and the magnetic poles of the second magnetic stoppers (93) are the same as those of the first magnetic stoppers (92).
14. An all-in-one steaming and baking machine as claimed in claim 13, wherein each first magnetic retaining member (92) is a block and is fixed on each leaf plate (42) of the impeller (40), and the second magnetic retaining member (93) is a circular ring fixed on the rear surface of the back plate of the inner container (1).
15. The steaming and baking all-in-one machine as claimed in any one of claims 1 to 12, wherein the impeller (40) of the circulating fan (4) comprises a hub plate (41) having a central shaft hole (411) and fan blades (42) spaced and arranged on the periphery of the hub plate (41), wherein each fan blade (42) comprises a first plate body (421) and a second plate body (422) which are formed by extending the side edge of the hub plate (41) outwards along one surface of the hub plate (41), the second plate body (422) is fixed on the first side edge of the first plate body (421) along the rotating direction and is perpendicular to the first plate body (421), and the outer end of the second side edge of the first plate body (421) along the rotating direction extends along the rotating direction to form a triangular first convex angle (423).
16. An all-in-one steaming and baking machine as claimed in claim 15, wherein the second plate body (422) of each fan blade plate (42) extends in a direction deviating from the radial direction of the circle on which the hub plate (41) is located.
17. The steaming and baking all-in-one machine as claimed in claim 16, wherein the extending direction of the second plate body (422) in each fan blade plate (42) deviates from the radial direction of the circle of the hub plate (41) by an angle of 15-18 degrees.
18. The circulating fan according to claim 16, wherein the outer side of each second plate (422) extends vertically with respect to the first plate (421), and the inner side of each second plate (422) is inclined from inside to outside in a direction away from the hub plate (41).
19. The steaming and baking all-in-one machine as claimed in claim 18, wherein the outer edge of each first convex corner (423) is on the same arc line with the outer edge of the first plate body (421) where the first convex corner is located, the inner edge of each first convex corner (423) is parallel to the extending direction of the adjacent second plate body (422), and the outer edge and the inner edge of each first convex corner (423) are smoothly connected.
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| CN202111526610.1A CN114287789B (en) | 2021-12-14 | 2021-12-14 | Steaming and baking integrated machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111526610.1A CN114287789B (en) | 2021-12-14 | 2021-12-14 | Steaming and baking integrated machine |
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| CN114287789A true CN114287789A (en) | 2022-04-08 |
| CN114287789B CN114287789B (en) | 2023-05-26 |
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| JP2005009770A (en) * | 2003-06-19 | 2005-01-13 | Hitachi Hometec Ltd | Heating cooker |
| JPWO2005003554A1 (en) * | 2003-12-03 | 2007-09-20 | 金原 士朗 | Wind power generation system, permanent magnet arrangement structure and electric / force conversion device |
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| Publication number | Publication date |
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| CN114287789B (en) | 2023-05-26 |
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