CN112426027B - Cooking equipment with baking function - Google Patents
Cooking equipment with baking function Download PDFInfo
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- CN112426027B CN112426027B CN202011186717.1A CN202011186717A CN112426027B CN 112426027 B CN112426027 B CN 112426027B CN 202011186717 A CN202011186717 A CN 202011186717A CN 112426027 B CN112426027 B CN 112426027B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
- A47J2027/043—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels for cooking food in steam
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention relates to cooking equipment with a baking function, which comprises a liner, wherein a hot air baffle with an air inlet and an air outlet is arranged on the rear side of an inner cavity of the liner, a hot air fan is arranged on the back of the liner, the hot air baffle and a back plate of the liner enclose a hot air chamber, a hot fan blade of the hot air fan is positioned in the hot air chamber, a motor of the hot air fan is positioned outside the back plate of the liner, a heating pipe is arranged on the periphery of the hot air fan blade, the cooking equipment also comprises an air guide channel with an air guide blade, an air inlet of the air guide channel is in fluid communication with the air outlet of the hot air baffle, an air outlet is positioned in the inner cavity of the liner and is adjacent to the front opening of the liner, and air flow in the air outlet of the air guide channel flows from back to front. The hot air circulation in the inner cavity is high in speed, the temperature field uniformity of the inner container is good, the situation that the residual in the inner container is directly sprayed to users when the users open the door body can be avoided, the self-cleaning of the air guide channel can be realized, and the humidity of the externally discharged steam can be reduced.
Description
Technical Field
The invention relates to the field of cooking equipment, in particular to cooking equipment with a baking function.
Background
The oven is a cooking device that utilizes inside heating element's heat radiation to heat food, the heating element of current oven generally includes the top heating pipe, back heating pipe and bottom heating pipe, wherein the top heating pipe is installed on the interior top surface of oven inner bag, the bottom heating pipe is installed on the outer bottom surface of oven inner bag, and the vertical hot-blast baffle of installing in rear side of oven inner bag, this hot-blast baffle encloses into hot-blast room with the backplate of inner bag, the flabellum of the air heater of oven is installed in this hot-blast room, and above-mentioned back heating pipe encloses the periphery of establishing at this flabellum. Such as Chinese patent with application No. CN201811452962.5 (publication No. CN111248764A), Chinese patent with application No. CN202010036718.1 (publication No. CN111227669A), and other domestic oven structures.
However, the volume of the existing oven liner is large, so that the distance between the hot air baffle on the back side of the liner and the oven door body is large, the hot air circulation speed is low, the temperature rise inside the liner is low, the uniformity of a temperature field is poor, and the cooking efficiency and the cooking effect are affected. In addition, the arrangement of the top heating pipe and the bottom heating pipe can cause the local heating temperature at the top and the bottom of the food to be too high, and further influence the uniformity of the temperature field inside the liner.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a cooking device with a baking function, which has a high hot air circulation speed, aiming at the prior art.
The second technical problem to be solved by the present invention is to provide a cooking apparatus with a baking function, which has a good temperature field uniformity, in view of the prior art.
The third technical problem to be solved by the present invention is to provide a cooking device with a baking function, which can avoid direct steam injection when the door is opened.
A fourth technical problem to be solved by the present invention is to provide a cooking apparatus with a self-cleaning function and a baking function in view of the prior art.
The fifth technical problem to be solved by the present invention is to provide a cooking device with a baking function, which has low humidity of discharged steam.
The technical scheme adopted by the invention for solving at least one technical problem is as follows: a cooking device with a baking function comprises a liner, wherein a hot air baffle with an air inlet and an air outlet is arranged on the rear side of an inner cavity of the liner, a hot air fan is arranged on the back of the liner, the hot air baffle and a back plate of the liner enclose a hot air chamber, a hot fan blade of the hot air fan is positioned in the hot air chamber, a motor of the hot air fan is positioned outside the back plate of the liner, and a heating pipe is arranged on the outer periphery of the hot air fan blade.
Further, the air guide channel extends along the front-back direction of the inner container. Thereby the length of the air guide channel can be shortened as much as possible, and the speed of the hot air circulation in the inner container is further accelerated.
Furthermore, the air guide channel is arranged in the inner container, an air inlet of the air guide channel is communicated with an air outlet of the hot air baffle, and the air flow direction in an air outlet of the air guide channel deviates from the horizontal direction. The structure that sets up the air guide channel and enable the cooking equipment that has the function of baking inside the inner bag is compacter to can avoid the loss of heat of hot-air at the air guide channel flow in-process, improve the heat utilization ratio of inner bag, and the air current direction skew horizontal direction in the gas outlet of air guide channel, thereby can avoid the internal surface of the air guide channel's air outlet direct injection door body and cause the loss of heat.
Further, the air guide fan blade is an axial flow fan blade which is arranged in the middle of the air guide channel and is linked with a motor shaft of the air heater. The air inlet direction and the air outlet direction of the axial flow fan blade are the same, so that the flowing speed of hot air in the air guide channel can be further accelerated, the flowing time from the air outlet of the air outlet to the front side of the inner container inner cavity is further shortened, the axial flow fan blade is linked with a motor shaft of an air heater, the rotation of the air guide fan blade can be realized without adding a driving device, and simultaneously the air guide fan blade and the air heater can synchronously work, namely when the cooking equipment starts to work, the air guide fan blade can start to work.
Further, the air guide channel sequentially comprises an air inlet section, a flow guide section, an acceleration section, a jet flow section and an air outlet section along the airflow direction of the air guide channel, the free end of the air inlet section is an air inlet of the air guide channel, the free end of the air outlet section is an air outlet of the air guide channel, the cross sections of the air inlet section, the flow guide section, the jet flow section and the air outlet section are flat along the left-right direction, the cross section areas of the air inlet section and the air outlet section are unchanged, the cross section area of the flow guide section increases progressively along the airflow direction while the cross section area of the jet flow section decreases progressively along the airflow direction, the cross section of the acceleration section is formed in a circular shape, the cross section area of the acceleration section is smaller than the maximum cross section area of the flow guide section and larger than the maximum cross section area of the jet flow guide section, and the air guide fan blades are installed in the acceleration section. Wherein, the cross sectional area increase of drainage section can reduce the resistance to the air current, can carry out the drainage to the hot-air that gets into the air inlet section, enables during the hot-air gets into the air guide channel more smoothly, and the air guide flabellum in the acceleration segment can get into the hot-air and accelerate to accelerate the velocity of flow of hot-air, make the air velocity who reaches air guide channel gas outlet department reach higher level, further promote the inside heated air circulation speed of inner bag.
Further, the horizontal section of the flow guiding section is reduced along the airflow direction and the vertical section is expanded along the airflow direction, and correspondingly, the air outlet is arranged along the left and right directions of the hot air baffle. Thereby enlarging the air intake area and further reducing the resistance to the gas.
Furthermore, the accelerating section sequentially comprises a first accelerating section and a second accelerating section along the airflow direction, wherein the cross section area of the first accelerating section is unchanged, the cross section area of the second accelerating section is gradually decreased along the airflow direction, and the air guide fan blade is arranged in the first accelerating section. Because the air guide fan blades enter air along the horizontal direction, the area of the cross section of the first acceleration section is unchanged, the air flow can be accelerated more efficiently through the air guide fan blades, and the air flow accelerated by the air guide fan blades can be accelerated for the second time through the change of the area of the cross section of the second acceleration section, so that the air flow entering the jet flow section reaches higher flow speed.
Further, the horizontal cross section of the jet flow section is flared along the airflow direction and the vertical cross section is necked down along the airflow direction. The flaring of the horizontal section can ensure that the air outlet of the air guide channel can be distributed over the left and right areas of the inner container at the height of the air guide channel as much as possible, thereby ensuring the uniformity of the left and right temperature fields of the inner container, and the necking of the vertical section can accelerate the air flow again, so that the air flow speed reaching the air outlet section reaches a higher level.
Further, the air guide channel is arranged on one side of the horizontal central plane of the inner container, and the jet flow section and the air outlet section are inclined towards the horizontal central plane of the inner container along the air flow direction. On the one hand, the air flow direction at the air outlet of the air guide channel is closer to the height of the air inlet of the hot air baffle plate, so that the air outlet of the air guide channel can flow back to the hot air chamber more smoothly through the suction force of the fan blades of the hot air chamber, the hot air circulation inside the liner is promoted, and on the other hand, the heat loss caused by the inner surface of the air outlet direct blowing door of the air guide channel can be better avoided.
Furthermore, the air guide channel comprises a first air guide channel positioned at the upper part of the inner container inner cavity and a second air guide channel positioned at the lower part of the inner container inner cavity, correspondingly, the air outlet on the hot air baffle plate comprises a first air outlet arranged at the upper end of the hot air baffle plate and a second air outlet arranged at the lower end of the hot air baffle plate, and the first air outlet and the second air outlet are respectively communicated with the air inlet of the first air guide channel and the air inlet of the second air guide channel. The arrangement of the double channels can further accelerate the hot air circulation speed in the inner container and promote the uniformity of the upper and lower temperature fields in the inner container.
Furthermore, the first air guide channel and the second air guide channel are arranged up and down symmetrically relative to the horizontal central plane of the inner container. Thereby further promoting the uniformity of the temperature field in the inner container.
Further, the air guide fan blades in each air guide channel are linked with a motor shaft of the air heater through a linkage mechanism, the linkage mechanism comprises a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a seventh gear, a first worm, a second worm, a third worm, a fourth worm, a fifth worm, a sixth worm and a seventh worm, wherein the first gear is installed on the motor shaft of the air heater, the first worm extends vertically, a thread section in the middle of the first worm and the first gear form worm gear transmission, two ends of the first worm are respectively provided with a second gear and a third gear, the second worm and the third worm are arranged up and down and respectively extend horizontally, wherein the thread ends of the second gear and the rear end of the second worm form worm gear transmission, and the thread ends of the third gear and the rear end of the third worm form worm gear transmission, and the middle parts of the second worm and the third worm are respectively provided with the fourth gear and the fifth gear, the fourth worm and the fifth worm respectively extend vertically and respectively form worm gear transmission with the fourth gear and the fifth gear, the sixth gear and the seventh gear are respectively arranged on the fourth worm and the fifth worm, the sixth worm and the seventh worm respectively extend horizontally, each air guide fan blade is respectively arranged on the sixth worm and the seventh worm, and the sixth worm and the seventh worm respectively form worm gear transmission with the sixth gear and the seventh gear. Therefore, the rotation of the motor shaft of the air heater can drive the rotation of each air guide fan blade simultaneously, so that the two air guide fan blades rotate in the same direction.
Compared with the prior art, the invention has the advantages that: through setting up the air guide channel, utilize the rotation of air guide flabellum in the air guide channel can be with the adjacent inner bag opening part of air current direction inner bag front end of hot air baffle air outlet department, the cooperation through utilizing air guide flabellum and hot fan leaf enables the air in the inner bag and gets into hot-blast room more fast, thereby accelerate the air-out of hot-blast room and flow the velocity of flow to inner bag inner chamber front side, accelerate the inside heated air circulation's of inner chamber speed, and then accelerate the programming rate of the inner bag, promote the temperature field homogeneity of inner bag, then improve cooking equipment's culinary art efficiency, promote cooking equipment's culinary art effect. In addition, the invention does not need to additionally arrange an upper heating pipe and a lower heating pipe, so that the inner structure of the liner is simple and the liner is convenient to clean.
In addition, when the cooking device with the baking function is a steaming and baking integrated machine or other cooking devices with the steaming function, after the steaming function is finished, the motor of the hot air blower is reversed to rotate, so that the rotating direction of the air guide fan blade is changed, and residual steam in the liner can be sucked into the air guide channel from the air outlet of the air guide channel, so that residual direct injection of the liner by a user when the door body is opened is avoided, the steam entering the air guide channel can clean the inner peripheral surface of the air guide channel under the assistance of the air guide fan blade, self-cleaning of the air guide channel is realized (the air guide channel is troublesome to clean manually), residual stains on the inner peripheral surface of the air guide channel after long-term use are avoided, in addition, the steam entering the air guide channel can further enter the hot air chamber, the steam is further heated by the heating pipe in the hot air chamber, the humidity of the steam is reduced, and after the hot air fan blade and the air guide fan blade stop rotating, the steam after reheating can be arranged outside through the exhaust passage at the top of the inner container, so that the humidity of the arranged steam is reduced, and the use experience of a user is improved.
Drawings
FIG. 1 is a schematic structural diagram of a cooking apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
FIG. 3 is a schematic view of the structure of FIG. 1 in still another direction;
FIG. 4 is a cross-sectional view of a cooking apparatus in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a linkage mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic view of a partial structure of a cooking apparatus according to an embodiment of the present invention;
FIG. 7 is a horizontal sectional view of an air guide channel according to an embodiment of the present invention;
FIG. 8 is a vertical cross-sectional view of an air guide channel in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 8, a cooking device with a baking function, such as an electric oven, a steaming and baking all-in-one machine, includes a liner 1, a hot air baffle 2 having an air inlet 21 and an air outlet 22 is disposed at the rear side of an inner cavity of the liner 1, a hot air blower 3 is disposed at the back of the liner 1, the hot air baffle 2 and a back plate of the liner 1 enclose a hot air chamber 20, a hot air fan blade 31 of the hot air blower 3 is located in the hot air chamber 20, a motor of the hot air blower 3 is located outside the back plate of the liner 1, and an annular heating pipe 7 is disposed around the outer periphery of the hot air fan blade 31. Wherein, the air inlet 21 of the hot air baffle 2 is arranged at the center of the hot air baffle 2, and the air outlet 22 is arranged at the end of the hot air baffle 2.
Further, an air guide channel 50 with air guide fan blades 6 is also included, the air inlet 510 of the air guide channel 50 is in fluid communication with the air outlet 22 of the hot air baffle 2, the air outlet 551 is located in the inner cavity of the liner 1 and adjacent to the opening of the liner 1, and the air flow in the air outlet 551 of the air guide channel 50 flows from back to front. According to the invention, the air guide channel 50 is arranged, the rotation of the air guide fan blade 6 in the air guide channel 50 can guide the air flow at the air outlet 22 of the hot air baffle 2 to the front end of the inner container 1 adjacent to the opening of the inner container 1, and the air in the inner container 1 can more quickly enter the hot air chamber 20 by utilizing the cooperation of the air guide fan blade 6 and the hot air fan blade 31, so that the flow speed of the air outlet of the hot air chamber 20 flowing to the front side of the inner cavity of the inner container 1 is increased, the speed of hot air circulation in the inner container 1 is increased, the temperature rise speed of the inner container 1 is increased, the temperature field uniformity of the inner container 1 is improved, the cooking efficiency of the cooking equipment is improved, and the cooking effect of the cooking equipment is improved. In addition, when the cooking device with the baking function in the invention is a cooking device with a steaming function such as a steaming and baking integrated machine, after the steaming function is finished, the motor of the hot air blower 3 is reversed to rotate, so that the rotation direction of the air guide fan blade 6 is changed, and the residual steam in the inner container 1 can be sucked into the air guide channel 50 from the air outlet 551 of the air guide channel 50, so that the residual direct injection user in the inner container 1 when the door body is opened by the user is avoided, and the steam entering the air guide channel 50 can clean the inner circumferential surface of the air guide channel 50 with the aid of the air guide fan blade 6, so that the air guide channel 50 is self-cleaned, the residual stain on the inner circumferential surface of the air guide channel 50 after long-term use is avoided, in addition, the steam entering the air guide channel 50 can further enter the hot air chamber 20, and the steam is further heated by the heating pipe 7 in the hot air chamber 20, so as to reduce the humidity of the steam, after the hot fan blades 31 and the air guide fan blades 6 stop rotating, the reheated steam can be discharged outside through an exhaust channel (not shown) at the top of the inner container 1, so that the humidity of the discharged steam is reduced, and the use experience of a user is improved.
In this embodiment, the air guide channel 50 is disposed in the inner container 1 and extends along the front-rear direction of the inner container 1, so that the length of the air guide channel 50 can be shortened as much as possible, and the speed of the hot air circulation inside the inner container 1 can be further increased. The air inlet 510 of the air guide channel 50 is connected to the air outlet 22 of the hot air baffle 2, and the air flow direction in the air outlet 551 of the air guide channel 50 deviates from the horizontal direction. The structure of the cooking device with the baking function is more compact by arranging the air guide channel 50 in the inner container 1, the heat loss of hot air in the flowing process of the air guide channel 50 can be avoided, the heat utilization rate of the inner container 1 is improved, the air flow direction in the air outlet 551 of the air guide channel 50 deviates from the horizontal direction, and the heat loss caused by the inner surface of the air outlet direct injection door body of the air guide channel 50 can be avoided.
In addition, in this embodiment, the air guide vane 6 is an axial flow vane, which is disposed in the middle of the air guide channel 50 and is linked with the motor shaft 30 of the air heater 3. The air inlet direction and the air outlet direction of the axial flow fan blade are the same, so that the flowing speed of hot air in the air guide channel 50 can be further accelerated, the flowing time from the air outlet of the air outlet 22 to the front side of the inner cavity of the inner container 1 is further shortened, the axial flow fan blade is linked with the motor shaft 30 of the hot air blower 3, the rotation of the air guide fan blade 6 can be realized without adding a driving device, meanwhile, the air guide fan blade 6 and the hot air blower 3 can synchronously work, namely, when the cooking equipment starts to work, the air guide fan blade 6 can start to work, on one hand, cold air in the inner container 1 can be quickly sucked into the hot air chamber 20 to be heated, the temperature rising speed of the inner container 1 is accelerated, on the other hand, hot air heated in the hot air chamber 20 can be quickly guided to the front end of the inner container 1, the hot air circulation in the inner container 1 is promoted, and the uniformity of a temperature field is promoted.
In this embodiment, the air guide passage 50 is formed by an inner cavity of the air guide cover 5 transversely disposed in the inner container 1, and accordingly, the air outlet 22 is disposed along the length direction of the hot air baffle 2. Further, the air guide channel 50 comprises an air inlet section 51, a flow guiding section 52, an accelerating section 53, a jet flow section 54 and an air outlet section 55 in sequence along the airflow direction, the free end of the air inlet section 51 is the air inlet 510 of the air guide passage 50 and the free end of the air outlet section 55 is the air outlet 551 of the air guide passage 50, the cross sections of the air inlet section 51, the flow guiding section 52, the jet flow section 54 and the air outlet section 55 are flat along the left-right direction, wherein the cross-sectional areas of the air inlet section 51 and the air outlet section 55 are constant, the cross-sectional area of the flow guiding section 52 increases progressively along the air flow direction and the cross-sectional area of the jet flow section 54 decreases progressively along the air flow direction, the cross-sectional area of the accelerating section 53 is formed in a circular shape, and the accelerating section 53 has a cross-sectional area smaller than the maximum cross-sectional area of the flow inducing section 52 and larger than the maximum cross-sectional area of the spouting section 54, and the air guide vane 6 is installed in the accelerating section 53. The cross-sectional area of the flow-guiding section 52 is increased to reduce resistance to air flow, so that hot air entering the air-intake section 51 can be guided, the hot air can enter the air-guiding channel 50 more smoothly, the air-guiding blades 6 in the accelerating section 53 can accelerate the entering hot air, and therefore the flowing speed of the hot air is increased, the air flow speed reaching the air outlet 551 of the air-guiding channel 50 reaches a higher level, and the hot air circulation speed inside the inner container 1 is further increased. Wherein, the horizontal section of the flow guiding section 52 is contracted along the airflow direction and the vertical section is expanded along the airflow direction, and correspondingly, the air outlet 22 is arranged along the left and right directions of the hot air baffle 2, thereby expanding the air inlet area and further reducing the resistance to the air. The acceleration section 53 sequentially includes a first acceleration section 531 and a second acceleration section 532 in the airflow direction, wherein the cross-sectional area of the first acceleration section 531 is constant and the cross-sectional area of the second acceleration section 532 decreases in the airflow direction, and the air guide blade 6 is installed in the first acceleration section 531. Because the air guide fan blade 6 enters air along the horizontal direction, the cross section area of the first accelerating section 531 is unchanged, so that the air flow can be accelerated more efficiently through the air guide fan blade 6, and the air flow accelerated by the air guide fan blade 6 can be accelerated for the second time through the change of the cross section area of the second accelerating section 532, so that the air flow entering the jet flow section 54 reaches a higher flow velocity. In addition, the horizontal section of the jet flow section 54 is flared along the airflow direction, the vertical section is narrowed along the airflow direction, and the flaring of the horizontal section enables the outlet air of the air guide channel 50 to spread over the left and right areas of the liner 1 at the height of the air guide channel as much as possible, so that the uniformity of the left and right temperature fields of the liner 1 is ensured, while the narrowing of the vertical section can accelerate the airflow again, so that the airflow speed reaching the air outlet section 55 reaches a higher level.
In this embodiment, the air guide passage 50 is disposed at one side of the horizontal central plane of the inner container 1, and the jet flow section 54 and the air outlet section 55 are both inclined toward the horizontal central plane of the inner container 1 along the air flow direction. Therefore, on one hand, the air flow direction at the air outlet 551 of the air guide channel 50 is closer to the height of the air inlet 21 of the hot air baffle 2, so that the air outlet of the air guide channel 50 can flow back to the hot air chamber 20 more smoothly through the suction force of the fan blades of the hot air chamber 20, the hot air circulation inside the inner container 1 is promoted, and on the other hand, the heat loss caused by the fact that the air outlet of the air guide channel 50 directly blows the inner surface of the door body can be better avoided.
Further, in this embodiment, the air guide channel 50 includes a first air guide channel 501 located at an upper portion of the inner cavity of the inner container 1 and a second air guide channel 502 located at a lower portion of the inner cavity of the inner container 1, and the first air guide channel 501 and the second air guide channel 502 are arranged vertically symmetrically with respect to a horizontal center plane of the inner container 1. That is, in the present invention, the upper portion and the lower portion of the inner bag 1 are respectively provided with one air guide hood 5 in the lateral direction, and the inner cavities of the air guide hoods 5 respectively constitute the first air guide passage 501 and the second air guide passage 502. Correspondingly, the air outlet 22 of the hot air baffle 2 includes a first air outlet 221 formed at the upper end of the hot air baffle 2 and a second air outlet 222 formed at the lower end of the hot air baffle 2, and the first air outlet 221 and the second air outlet 222 are respectively communicated with the air inlet 510 of the first air guide channel 501 and the air inlet 510 of the second air guide channel 502. The arrangement of the double channels can further accelerate the hot air circulation speed in the inner container 1 and promote the uniformity of the upper and lower temperature fields in the inner container 1.
In this embodiment, the air guide fan blade 6 in each air guide channel 50 is linked with the motor shaft 30 of the air heater 3 through a linkage mechanism 4, the linkage mechanism 4 includes a first gear 411, a second gear 412, a third gear 413, a fourth gear 414, a fifth gear 415, a sixth gear 416, a seventh gear 417, a first worm 421, a second worm 422, a third worm 423, a fourth worm 424, a fifth worm 425, a sixth worm 426 and a seventh worm 427, wherein the first gear 411 is installed on the motor shaft 30 of the air heater 3, the first worm 421 extends vertically, a thread section of the middle portion of the first worm 421 and the first gear 411 form a worm-gear drive, two ends of the first worm 421 are respectively installed with the second gear 412 and the third gear 413, the second worm 422 and the third worm 423 are arranged up and down and respectively extend horizontally, wherein the second gear 412 and a thread end of the rear end of the second worm 422 form a worm-gear drive, and the third gear 413 and the threaded end of the rear end of the third worm 423 form a worm gear-worm transmission, the middle parts of the second worm 422 and the third worm 423 are respectively provided with the fourth gear 414 and the fifth gear 415, the fourth worm 424 and the fifth worm 425 respectively extend vertically and respectively form the worm gear-worm transmission with the fourth gear 414 and the fifth gear 415, the sixth gear 416 and the seventh gear 417 are respectively arranged on the fourth worm 424 and the fifth worm 425, the sixth worm 426 and the seventh worm 427 respectively extend horizontally, each air guide fan blade 6 is respectively arranged on the sixth worm 426 and the seventh worm 427, and the sixth worm 426 and the seventh worm 427 respectively form the worm gear-worm transmission with the sixth gear 416 and the seventh gear 417. The invention adopts worm and gear transmission, has stable transmission and low noise, can simultaneously drive the air guide fan blades 6 to rotate in the same direction by the rotation of the motor shaft 30 of the air heater 3, and further, when the cooking equipment works, the hot fan blades 31 and the two air guide fan blades 6 can synchronously rotate. Specifically, in the present invention, the first worm 421 is disposed on the back side of the inner container 1 and on the rear side of the motor of the air heater 3, the second worm 422 and the third worm 423 are disposed above and below the inner container 1, respectively, and the fourth worm 424 and the fifth worm 425 vertically penetrate through the top wall and the bottom wall of the inner container 1 and penetrate into the corresponding air guiding cover 5, respectively.
The working process of the invention is as follows:
in a baking mode: when the cooking device starts to work, the hot fan blade 31 and the two air guide fan blades 6 can rotate simultaneously (the three rotate clockwise), cold air in the inner container 1 is sucked into the hot air chamber 20 through the air inlet 21 of the hot air baffle 2 rapidly under the combined action of the hot air fan blade 31 and the two air guide fan blades 6, hot air heated by the heating pipe 7 enters each air guide channel 50 under the action of each air guide fan blade 6 through each air outlet of the hot air baffle 2 respectively, is discharged from the front end of the inner container 1 through the diversion and acceleration of each air guide channel 50, and can flow back to the hot air chamber 20 again under the suction action of the hot air fan blade 31, so that the hot air circulation inside the inner container 1 is accelerated, the heating speed of the inner container 1 is accelerated, the rapid heating of food is realized, and the uniformity of the temperature field of the inner container 1 can be improved.
At the end of the steam mode: the motor of the hot air blower 3 rotates in a reversing manner, so that the rotating direction (anticlockwise rotation) of the air guide fan blade 6 is changed, residual steam in the inner container 1 can be sucked into the air guide channel 50 from the air outlet 551 of the air guide channel 50, residual steam in the inner container 1 is prevented from being directly sprayed to a user when the user opens the door body, the steam entering the air guide channel 50 can clean the inner peripheral surface of the air guide channel 50 with the aid of the air guide fan blade 6, self-cleaning of the air guide channel 50 is achieved (the air guide channel 50 is flat and long in structure, and troublesome in manual cleaning), and residual stains on the inner peripheral surface of the air guide channel 50 after long-term use are avoided. In addition, steam that gets into in the air guide channel 50 can further get into hot-blast room 20, carries out further heating to steam through heating pipe 7 in hot-blast room 20, reduces the humidity of steam, and after hot fan leaf 31 and air guide flabellum 6 stall, the steam after reheating can be arranged outside through the exhaust passage at inner bag 1 top to reduce the humidity of arranging steam outward, promote user's use experience.
Claims (7)
1. A cooking device with a baking function comprises a liner (1), a hot air baffle plate (2) with an air inlet (21) and an air outlet (22) is arranged on the rear side of the inner cavity of the liner (1), a hot air fan (3) is arranged on the back of the liner (1), a hot air chamber (20) is enclosed by the hot air baffle plate (2) and the back plate of the liner (1), a hot air fan blade (31) of the hot air fan (3) is positioned in the hot air chamber (20), a motor of the hot air fan (3) is positioned outside the back plate of the liner (1), a heating pipe (7) is arranged on the outer periphery of the hot air fan blade (31), the cooking device is characterized by further comprising an air guide channel (50) with an air guide blade (6), the air inlet (510) of the air guide channel (50) is in fluid communication with the air outlet (22) of the hot air baffle plate (2), and the air outlet (551) is positioned in the inner cavity of the liner (1) and is adjacent to an air guide opening of the liner (1), and the air flow in the air outlet (551) of the air guide channel (50) flows from back to front, the air guide channel (50) extends along the front-back direction of the inner container (1), the air guide channel (50) is arranged in the inner container (1), the air inlet (510) of the air guide channel (50) is communicated with the air outlet (22) of the hot air baffle plate (2), the air flow direction in the air outlet (551) of the air guide channel (50) deviates from the horizontal direction,
the air guide fan blade (6) is an axial flow fan blade, is arranged in the middle of the air guide channel (50) and is linked with a motor shaft (30) of the air heater (3),
the air guide channel (50) sequentially comprises an air inlet section (51), a flow guide section (52), an acceleration section (53), a jet flow section (54) and an air outlet section (55) along the airflow direction, the free end of the air inlet section (51) is an air inlet (510) of the air guide channel (50), the free end of the air outlet section (55) is an air outlet (551) of the air guide channel (50), the cross sections of the air inlet section (51), the flow guide section (52), the jet flow section (54) and the air outlet section (55) are flat along the left-right direction, the cross section areas of the air inlet section (51) and the air outlet section (55) are unchanged, the cross section area of the flow guide section (52) is increased progressively along the airflow direction, the cross section area of the jet flow section (54) is decreased progressively along the airflow direction, the cross section of the acceleration section (53) is formed in a round shape, and the cross section area of the acceleration section (53) is smaller than the maximum cross section area of the flow guide section (52) and larger than the maximum cross section area of the jet flow section (54), the air guide fan blades (6) are installed in the accelerating section (53), the horizontal section of the jet flow section (54) is flared along the airflow direction, and the vertical section is necked along the airflow direction.
2. Cooking device with grilling function according to claim 1, characterized in that the horizontal section of the tapping section (52) is constricted in the direction of the airflow and the vertical section is flared in the direction of the airflow.
3. The cooking apparatus with a grill function according to claim 1, wherein the acceleration section (53) comprises a first acceleration section (531) and a second acceleration section (532) in order along the direction of the air flow, wherein the cross-sectional area of the first acceleration section (531) is constant and the cross-sectional area of the second acceleration section (532) is decreased gradually along the direction of the air flow, and the air guide fan (6) is installed in the first acceleration section (531).
4. The cooking apparatus with a grill function according to claim 1, wherein the air guide passage (50) is provided at one side of a horizontal center plane of the inner container (1), and the spouting portion (54) and the air outlet portion (55) are inclined in an air flow direction toward the horizontal center plane of the inner container (1).
5. The cooking apparatus with a toasting function according to any of the claims 1 to 4, wherein the air guide channel (50) comprises a first air guide channel (501) located at the upper part of the inner cavity of the inner container (1) and a second air guide channel (502) located at the lower part of the inner cavity of the inner container (1), correspondingly, the air outlet (22) of the hot air baffle (2) comprises a first air outlet (221) opened at the upper end of the hot air baffle (2) and a second air outlet (222) opened at the lower end of the hot air baffle (2), and the first air outlet (221) and the second air outlet (222) are respectively communicated with the air inlet (510) of the first air guide channel (501) and the air inlet (510) of the second air guide channel (502).
6. The cooking apparatus having a grilling function as claimed in claim 5, wherein the first air guide channel (501) and the second air guide channel (502) are disposed up and down symmetrically with respect to a horizontal center plane of the inner tub (1).
7. The cooking apparatus with a toasting function according to claim 5, wherein the air guide fan blades (6) in each air guide channel (50) are linked with the motor shaft (30) of the air heater (3) by a linkage mechanism (4), the linkage mechanism (4) comprises a first gear (411), a second gear (412), a third gear (413), a fourth gear (414), a fifth gear (415), a sixth gear (416), a seventh gear (417), a first worm (421), a second worm (422), a third worm (423), a fourth worm (424), a fifth worm (425), a sixth worm (426) and a seventh worm (427), wherein the first gear (411) is installed on the motor shaft (30) of the air heater (3), the first worm (421) extends vertically and a thread section in the middle portion forms a worm gear transmission with the first gear (411), a second gear (412) and a third gear (413) are respectively installed at two ends of the first worm (421), a second worm (422) and a third worm (423) are arranged up and down and respectively extend horizontally, wherein the threaded ends of the rear ends of the second gear (412) and the second worm (422) form a worm gear-worm transmission, the threaded ends of the rear ends of the third gear (413) and the third worm (423) form a worm gear-worm transmission, the middle parts of the second worm (422) and the third worm (423) are respectively installed with the fourth gear (414) and the fifth gear (415), the fourth worm (424) and the fifth worm (425) respectively extend vertically and respectively form a worm gear-worm transmission with the fourth gear (414) and the fifth gear (415), the sixth gear (416) and the seventh gear (417) are respectively installed on the fourth worm (424) and the fifth worm (425), and the sixth worm (426) and the seventh worm (427) respectively extend horizontally, the air guide fan blades (6) are respectively arranged on a sixth worm (426) and a seventh worm (427), and the sixth worm (426) and the seventh worm (427) respectively form worm gear transmission with a sixth gear (416) and a seventh gear (417).
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| CN202011186717.1A CN112426027B (en) | 2020-10-30 | 2020-10-30 | Cooking equipment with baking function |
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| CN202011186717.1A CN112426027B (en) | 2020-10-30 | 2020-10-30 | Cooking equipment with baking function |
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| CN112426027A CN112426027A (en) | 2021-03-02 |
| CN112426027B true CN112426027B (en) | 2022-05-17 |
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| CN114468792B (en) * | 2022-01-14 | 2023-06-20 | 宁波方太厨具有限公司 | Steaming and baking oven and exhaust control method thereof |
| CN116982858A (en) * | 2023-08-08 | 2023-11-03 | 宁波方太厨具有限公司 | A cooking device, integrated cooking machine and integrated stove |
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| CN107334386A (en) * | 2017-03-29 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of baking box |
| CN110547696A (en) * | 2019-09-15 | 2019-12-10 | 宁波方太厨具有限公司 | Oven inner container structure and oven with same |
| CN210893411U (en) * | 2019-06-25 | 2020-06-30 | 中国空气动力研究与发展中心低速空气动力研究所 | Jet flow channel for jet flow noise test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL9301581A (en) * | 1993-09-13 | 1995-04-03 | Gastec Nv | Compact gas-fired infrared radiator in closed design. |
| CN205251295U (en) * | 2015-12-18 | 2016-05-25 | 广州伟格机械设备有限公司 | Oven hot air circulating system |
| CN110811349A (en) * | 2018-08-08 | 2020-02-21 | 宁波方太厨具有限公司 | an oven |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107334386A (en) * | 2017-03-29 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of baking box |
| CN210893411U (en) * | 2019-06-25 | 2020-06-30 | 中国空气动力研究与发展中心低速空气动力研究所 | Jet flow channel for jet flow noise test |
| CN110547696A (en) * | 2019-09-15 | 2019-12-10 | 宁波方太厨具有限公司 | Oven inner container structure and oven with same |
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