CN112493874A - Hot air structure with air frying function and oven - Google Patents
Hot air structure with air frying function and oven Download PDFInfo
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- CN112493874A CN112493874A CN202011191171.9A CN202011191171A CN112493874A CN 112493874 A CN112493874 A CN 112493874A CN 202011191171 A CN202011191171 A CN 202011191171A CN 112493874 A CN112493874 A CN 112493874A
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- hot air
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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
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
- A47J37/0641—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements with forced air circulation, e.g. air fryers
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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
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention relates to a hot air heating structure with an air frying function and an oven, wherein a back hot air chamber, a top hot air chamber and a bottom hot air chamber are respectively arranged in an inner container, wherein the outlet air of the back hot air chamber can respectively enter the bottom hot air chamber and the bottom hot air chamber, so that the speed is increased through a top hot fan blade in the top hot air chamber and a bottom hot fan blade in the bottom hot air chamber, meanwhile, reheating is realized through a top heating pipe in the top hot air chamber and a bottom heating pipe in the bottom hot air chamber, and high-speed hot air circulation is formed in the inner container under the action of the suction force of a first air inlet of the back hot air chamber by the speed-increased and reheated air flow of the top hot air chamber and the bottom hot air chamber, so that the rapid temperature rise of the inner container is realized, and the requirement of the air. In addition, the back hot air chamber, the top hot air chamber and the bottom hot air chamber are heated simultaneously, so that the uniformity of the temperature field of the inner container can be improved.
Description
Technical Field
The invention relates to the field of cooking devices, in particular to a hot air structure with an air frying function and an oven.
Background
Air frying is to replace hot oil in the original frying pan with air, so that food is cooked, and meanwhile, hot air blows away moisture on the surface layer of the food, so that the food material achieves the effect similar to frying. For example, a chinese utility model patent having a patent number ZL201920085873.5 (grant publication number CN209678283U), a chinese invention patent having an application number CN201780015939.7(CN108778074A), and the like.
Multifunctional cooking equipment is a development direction of future cooking equipment, such as a steaming and baking all-in-one machine having a steaming function and a baking function at the same time, a steaming and baking micro-all-in-one machine having a steaming function, a baking function and a microwave function at the same time, and the like. The electric oven with the air frying function is a cooking device which is integrated with the air frying function and the baking function at the same time, namely, a user can simultaneously realize the baking and the frying operation of food in the same electric oven. For example, chinese utility model patent No. ZL201420473999.7 (publication No. CN204016036U) discloses an electric oven with air frying function. However, the air-frying function needs to be rapidly heated in a short time, and the existing oven has a large inner container and a slow heating speed, so the cooking effect of the existing oven with the air-frying function is poor.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a hot air structure with a high temperature rise speed and an air frying function aiming at the prior art.
The second technical problem to be solved by the present invention is to provide an oven with the above hot air structure in view of the prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a hot air heating structure with air frying function comprises a liner, a back hot air baffle plate with a first air inlet and a first air outlet is arranged at the rear side of an inner cavity of the liner, a back hot air chamber is formed by the back hot air baffle plate and a back plate of the liner in a surrounding manner, a back air heater is arranged on the back plate of the liner, a back hot fan blade of the back air heater is positioned in the back hot air chamber, a motor of the back air heater is positioned behind the back plate of the liner, a back heating pipe is arranged around the outer circumference of the hot fan blade of the back air heater, the first air inlet of the back hot air baffle plate and the hot fan blade of the back air heater are arranged in a front-back opposite manner, the hot air heating structure is characterized in that a top hot air baffle plate and a bottom hot air baffle plate are respectively arranged at the top and the bottom of the inner cavity of the liner, wherein the top hot air baffle plate has a second air inlet, the top hot air chamber is internally provided with a top hot air fan blade, the periphery of the top hot air fan blade is provided with a top heating pipe, the second air inlet of the top hot air baffle is arranged opposite to the top hot air fan blade up and down, the bottom hot air baffle is provided with a third air inlet and a third air outlet, the bottom hot air baffle and the top plate of the inner container enclose a bottom hot air chamber, a bottom hot air fan blade is arranged in the bottom hot air chamber, the outer periphery of the bottom hot air fan blade is provided with a bottom heating pipe, a third air inlet of the bottom hot air baffle plate is arranged opposite to the bottom hot air fan blade up and down, and the second air inlet of the top hot air baffle and the third air inlet of the bottom hot air baffle are respectively communicated with the first air outlet of the back hot air baffle in a fluid manner, and the first air inlet of the back hot air baffle is respectively communicated with the second air outlet of the top hot air baffle and the third air outlet of the bottom hot air baffle in a fluid mode.
Further, the vertical setting of hot-blast baffle in back is in the rear side of inner bag, and first air intake is seted up in the middle part of the hot-blast baffle in back, and first air outlet is including setting up the first air outlet of going up at the hot-blast baffle in back upper end and setting up the first air outlet at the hot-blast baffle in back lower extreme, and above-mentioned hot-blast baffle in top and the hot-blast baffle in bottom level respectively set up in the top and the bottom of inner bag to, above-mentioned second air intake and third air intake are seted up respectively in the middle part of the hot-blast baffle in top and the hot-blast baffle in bottom, and second air outlet and third air outlet are seted up respectively in the front. Therefore, the airflow accelerated by the top hot air chamber and the bottom hot air chamber and reheated can be blown out from the front end of the inner container, flows towards the rear end of the inner container under the action of the suction force of the first air inlet of the back hot air chamber and flows back to the back hot air chamber, and then hot air flow is formed in the inner container to heat food in the inner container.
Furthermore, the air output of the first upper air outlet and the first lower air outlet is more than 55-70% of the total air output of the back hot air baffle. Therefore, most air flow in the air outlet of the back hot air chamber can be accelerated and reheated, the rapid temperature rise of the inner container is guaranteed, and a small part of air flow directly flows back to the inner container, so that the uniformity of a temperature field of the inner container is guaranteed.
The back hot air baffle plate is provided with a first air inlet, a first air outlet and a second air outlet, the first air inlet of the top air guide cover is communicated with the first upper air outlet of the back hot air baffle plate, the first air outlet is communicated with the second air inlet of the top hot air baffle plate, the second air inlet of the bottom air guide cover is communicated with the first lower air outlet of the back hot air baffle plate, and the second air outlet is communicated with the third air inlet of the bottom hot air baffle plate. Make the hot-blast room in back be linked together with the hot-blast room in top and bottom respectively through top wind scooper and bottom wind scooper, on the one hand, the air-out that enables the hot-blast room in back can more smoothly get into in the hot-blast room in top and the hot-blast room in bottom by the speed-up and reheat, on the other hand can avoid the influence of the negative pressure that the second air intake of the hot-blast baffle in top and the third air intake department of the hot-blast baffle in bottom department formed to the inside air field of inner bag, make the gaseous energy in the inner bag most backward flow to in the hot-blast room in back, guarantee the homogeneity in inner bag.
Further, each wind scooper is arranged horizontally, the cross section of each wind scooper is vertically square and gradually decreases from front to back, the rear ends of the top wind scooper and the bottom wind scooper are opened to form the first air inlet and the second air inlet respectively, each air inlet is covered on the front surface of the hot air baffle at the first upper air outlet and the first lower air outlet respectively, the front ends of the top wind scooper and the bottom wind scooper are sealed, the first air outlet and the second air outlet are respectively formed in the bottoms of the top wind scooper and the bottom wind scooper, and each air outlet is covered on the upper surface of the hot air baffle at the second air inlet and the third air inlet respectively. Therefore, the air guiding covers can better guide the outlet air in the back hot air chamber into the top hot air chamber and the bottom hot air chamber respectively, and can better avoid the influence of negative pressure formed at the second air inlet of the top hot air baffle and the third air inlet of the bottom hot air baffle on the air field in the liner.
Furthermore, the top walls of the rear ends of the top wind scoopers and the rear ends of the bottom wind scoopers are inclined downwards from back to front respectively, and the bottom walls of the top wind scoopers and the bottom wind scoopers are inclined upwards from back to front respectively. Like this by the air current of back hot-blast room entering can be by the first acceleration in the rear end of each wind scooper, and the air current after the first acceleration passes through the effect of hot-blast room of second wind gap entering top after can be by the second acceleration by the hot fan leaf in top, simultaneously also by the second acceleration through the effect of hot fan leaf in bottom after the third wind gap entering bottom hot-blast room to promote the effect of accelerating the air current of top hot-blast room and bottom hot-blast room.
Furthermore, the top wall and the bottom wall of the top wind scooper corresponding to the second air inlet of the top hot air baffle extend horizontally, and the top wall and the bottom wall of the bottom wind scooper corresponding to the third air inlet of the bottom hot air baffle extend horizontally. Therefore, the air flow entering each air guide cover can rapidly enter the top hot air chamber and the bottom hot air chamber under the suction action of the second air inlet and the third air inlet, and the heat loss caused by the air flow flowing to the front side of each air inlet is avoided.
Furthermore, the horizontal central plane of each wind scooper is trapezoidal, and the width of the trapezoid is gradually reduced from back to front, so that each wind scooper can better guide the incoming airflow and increase the speed.
Furthermore, the top wall and the bottom wall of the inner container are respectively sunken upwards and downwards to form an upper mounting cavity and a lower mounting cavity, the top hot air baffle plate horizontal cover is arranged on an opening of the upper mounting cavity to form the top hot air chamber, and the bottom hot air baffle plate horizontal cover is arranged on an opening of the lower mounting cavity to form the bottom hot air chamber. Make the hot-blast room structure in top and the hot-blast room in bottom firm, can realize the firm installation to top hot-blast fan leaf, top heating pipe, bottom hot-blast fan leaf and bottom heating pipe simultaneously.
Further, the top hot fan blade and the bottom hot fan blade are respectively linked with a motor shaft of the back 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 first worm, a second worm, a third worm, a fourth worm and a fifth worm, wherein the first gear is installed on the motor shaft of the back air heater, the first worm extends vertically, a thread section of the middle of the first worm and the first gear form worm gear transmission, two ends of the first worm are respectively provided with the second gear and the third gear, the second worm and the third worm are vertically arranged and respectively extend horizontally, wherein the thread ends of the second gear and the rear end of the second worm form worm gear worm transmission, the thread ends of the third gear and the rear end of the third worm form worm gear transmission, the middle 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 a worm gear and worm transmission top hot fan blade and a bottom hot fan blade together with the fourth gear and the fifth gear, and the top hot fan blade and the bottom hot fan blade are respectively arranged on the fourth worm and the fifth worm. Rotation through the motor shaft of back air heater like this can drive the rotation of hot fan leaf in top and the hot fan leaf in bottom simultaneously for the hot fan leaf in top and the hot fan leaf syntropy in bottom rotate.
The technical scheme adopted for further solving the second technical problem is as follows: an oven with the hot air heating structure is provided.
Compared with the prior art, the invention has the advantages that: the liner is provided with a back hot air chamber, a top hot air chamber and a bottom hot air chamber respectively, wherein the outlet air of the back hot air chamber can enter the bottom hot air chamber and the bottom hot air chamber respectively, so that the speed is increased through a top hot air fan blade in the top hot air chamber and a bottom hot air fan blade in the bottom hot air chamber, reheating is realized through a top heating pipe in the top hot air chamber and a bottom heating pipe in the bottom hot air chamber, and high-speed hot air circulation is formed in the liner under the action of the suction force at the first air inlet of the back hot air chamber by the increased speed of the top hot air chamber and the bottom hot air chamber and the reheated air flow, so that the rapid heating of the liner is realized, and the requirement of an air frying function on the rapid heating is further met. In addition, the back hot air chamber, the top hot air chamber and the bottom hot air chamber are heated simultaneously, so that the temperature field uniformity of the inner container can be improved, and in addition, the bottom heating pipe is arranged in the inner container and is provided with the bottom hot fan blade, so that the temperature rise influence of the bottom of the oven on the cabinet can be effectively reduced.
Drawings
FIG. 1 is a schematic structural diagram of a hot air heating structure 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 schematic view of the structure of FIG. 1 in still another direction;
FIG. 5 is a schematic view of a partial structure of a hot air heating structure according to an embodiment of the present invention;
FIG. 6 is a sectional view of a hot wind heating structure according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an inner container according to an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of FIG. 7 in another direction;
fig. 9 is a schematic structural view of a top wind scooper (bottom wind scooper) according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 9, an oven includes a hot air heating structure with an air blast function, the hot air heating structure includes an inner container 1, a back hot air baffle 2 having a first air inlet 21 and a first air outlet 22 is disposed at a rear side of an inner cavity of the inner container 1, the back hot air baffle 2 and a back plate of the inner container 1 enclose a back hot air chamber 20, the oven further includes a back hot air blower 23 installed on the back plate of the inner container 1, a back hot fan blade 231 of the back hot air blower 23 is located in the back hot air chamber 20, a motor 232 of the back hot air blower 23 is located behind the back plate of the inner container 1, a heating pipe back 24 is disposed around an outer periphery of the back hot fan blade of the back hot air blower 23, and the first air inlet 21 of the back hot air baffle 2 and the back hot fan blade 231 of the back hot air blower 23 are. The top and the bottom of the inner cavity of the liner 1 are respectively provided with a top hot air baffle 3 and a bottom hot air baffle 5, wherein the top hot air baffle 3 is provided with a second air inlet 31 and a second air outlet 32, the top hot air baffle 3 and the top plate of the liner 1 enclose a top hot air chamber 30, a top hot fan blade 33 is installed in the top hot air chamber 30, a top heating pipe 34 is arranged on the outer periphery of the top hot fan blade 33, and the second air inlet 31 of the top hot air baffle 3 and the top hot fan blade 33 are arranged up and down relatively. The bottom hot air baffle 5 has a third air inlet 51 and a third air outlet 52, the bottom hot air baffle 5 and the top plate of the liner 1 enclose a bottom hot air chamber 50, a bottom hot air fan blade 53 is installed in the bottom hot air chamber 50, a bottom heating pipe 54 is arranged around the bottom hot air fan blade 53, and the third air inlet 51 of the bottom hot air baffle 5 and the bottom hot air fan blade 53 are arranged opposite to each other.
Further, the second air inlet 31 of the top hot air baffle 3 and the third air inlet 51 of the bottom hot air baffle 5 are respectively in fluid communication with the first air outlet 22 of the back hot air baffle 2, and the first air inlet 21 of the back hot air baffle 2 is respectively in fluid communication with the second air outlet 32 of the top hot air baffle 3 and the third air outlet 52 of the bottom hot air baffle 5.
From the above, in the present invention, the outlet air of the back hot air chamber 20 can enter the bottom hot air chamber 50 and the bottom hot air chamber 50 respectively, so that the speed increase is realized by the top hot fan blade 33 in the top hot air chamber 30 and the bottom hot fan blade 53 in the bottom hot air chamber 50, the reheating is realized by the top heating pipe 34 in the top hot air chamber 30 and the bottom heating pipe 54 in the bottom hot air chamber 50, and the high-speed hot air circulation is formed in the liner 1 by the air flow accelerated and reheated by the top hot air chamber 30 and the bottom hot air chamber 50 under the action of the suction force at the first air inlet 21 of the back hot air chamber 20, so as to realize the rapid temperature rise of the liner 1, and further meet the requirement of the air frying function for the rapid temperature rise. In addition, the back hot air chamber 20, the top hot air chamber 30 and the bottom hot air chamber 50 can heat simultaneously to improve the temperature field uniformity of the liner 1, and in addition, the bottom heating pipe 54 is arranged in the liner 1 and is provided with the bottom hot fan blade 53, so that the temperature rise influence of the bottom of the oven on the cabinet can be effectively reduced.
Specifically, in this embodiment, the back hot air baffle 2 is vertically disposed at the rear side of the liner 1, the first air inlet 21 is disposed in the middle of the back hot air baffle 2, the first air outlet 22 includes a first upper air outlet 221 disposed at the upper end of the back hot air baffle 2 and a first lower air outlet 222 disposed at the lower end of the back hot air baffle 2, the top hot air baffle 3 and the bottom hot air baffle 5 are horizontally disposed at the top and the bottom of the liner 1, respectively, the second air inlet 31 and the third air inlet 51 are disposed in the middle of the top hot air baffle 3 and the bottom hot air baffle 5, and the second air outlet 32 and the third air outlet 52 are disposed at the front ends of the top hot air baffle 3 and the bottom hot air baffle 5, respectively. The airflow accelerated and reheated by the top hot air chamber 30 and the bottom hot air chamber 50 can be blown out from the front end of the inner container 1, and flows towards the rear end of the inner container 1 under the suction force of the first air inlet 21 of the back hot air chamber 20 to flow back into the back hot air chamber 20, so that hot air flow is formed in the inner container 1 to heat the food in the inner container 1. Preferably, the air output of the first upper air outlet 221 and the first lower air outlet 222 is greater than 55% to 70% (preferably 70% in this embodiment) of the total air output of the back hot air baffle 2, so that most of the air flow in the air output of the back hot air chamber 20 can be accelerated and reheated, thereby ensuring the rapid temperature rise of the liner 1, and a small portion of the air flow directly flows back into the liner 1, thereby ensuring the uniformity of the temperature field of the liner 1. Specifically, in this embodiment, the top wall and the bottom wall of the inner container 1 are respectively recessed upwards and downwards to form an upper mounting cavity 11 and a lower mounting cavity 12, the top hot air baffle 3 is horizontally covered on the opening of the upper mounting cavity 11 to form the top hot air chamber 30, and the bottom hot air baffle 5 is horizontally covered on the opening of the lower mounting cavity 12 to form the bottom hot air chamber 50, so that the top hot air chamber 30 and the bottom hot air chamber 50 are stable in structure, and the top hot fan blade 33, the top heating pipe 34, the bottom hot fan blade 53 and the bottom heating pipe 54 can be stably mounted.
In this embodiment, the hot air heating structure further includes a top air guiding cover 6 having a first air inlet 61 and a first air outlet 62, and a bottom air guiding cover 7 having a second air inlet 71 and a second air outlet 72. The first air inlet 61 of the top wind scooper 6 is communicated with the first upper air outlet 221 of the back hot air baffle 2, the first air outlet 62 is communicated with the second air inlet 71 of the top hot air baffle 3, the second air inlet 71 of the bottom wind scooper 7 is communicated with the first lower air outlet 222 of the back hot air baffle 2, and the second air outlet 72 is communicated with the third air inlet of the bottom hot air baffle 5. The back hot air chamber 20 is respectively communicated with the top hot air chamber 30 and the bottom hot air chamber 50 through the top wind scooper 6 and the bottom wind scooper 7, on one hand, the outlet air of the back hot air chamber 20 can more smoothly enter the top hot air chamber 30 and the bottom hot air chamber 50 to be accelerated and reheated, on the other hand, the influence of negative pressure formed at the second air inlet 31 of the top hot air baffle plate 3 and the third air inlet 51 of the bottom hot air baffle plate 5 on the internal air field of the liner 1 can be avoided, so that most of the gas in the liner 1 can flow back to the back hot air chamber 20, and the uniformity of the internal air field of the liner 1 is ensured. In this embodiment, the top wind scooper 6 and the bottom wind scooper 7 have the same structure, as shown in fig. 9.
Specifically, in the present embodiment, each air guiding cover is horizontally disposed and extends horizontally in a flat shape, and accordingly, the first upper outlet 221 and the first lower outlet 222 also extend horizontally along the back hot air baffle 2. The cross section of each wind scooper is vertically square and gradually decreases from front to back, the rear ends of the top wind scooper 6 and the bottom wind scooper 7 are opened to form the first air inlet 61 and the second air inlet 71 respectively, each air inlet is covered on the front surface of the hot air baffle where the first upper air outlet 221 and the first lower air outlet 222 are located respectively, the front ends of the top wind scooper 6 and the bottom wind scooper 7 are sealed respectively, the bottoms of the top wind scooper 6 and the bottom wind scooper 7 are provided with the first air outlet 62 and the second air outlet 72 respectively, and each air outlet is covered on the upper surface of the hot air baffle where the second air inlet 31 and the third air inlet 51 are located respectively. Through the design, the air guiding covers can better guide the outlet air in the back hot air chamber 20 into the top hot air chamber 30 and the bottom hot air chamber 50 respectively, and can better avoid the influence of the negative pressure formed at the second air inlet 31 of the top hot air baffle plate 3 and the third air inlet 51 of the bottom hot air baffle plate 5 on the air field in the inner container 1.
In order to achieve better acceleration effect on the airflow, the top walls of the rear ends of the top wind scoopers 6 and the rear ends of the bottom wind scoopers 7 are respectively inclined downwards from back to front, and the bottom walls are respectively inclined upwards from back to front. Thus, the air flow entering from the back hot air chamber 20 can be accelerated for the first time at the rear end of each air guiding cover, the air flow after the first acceleration can be accelerated for the second time through the action of the top hot air fan blade 33 after entering the top hot air chamber 30 through the second air inlet, and simultaneously, the air flow can be accelerated for the second time through the action of the bottom hot air fan blade 53 after entering the bottom hot air chamber 50 through the third air inlet 51, so that the acceleration effect of the top hot air chamber 30 and the bottom hot air chamber 50 on the air flow is improved. In addition, the top wall and the bottom wall of the top wind scooper 6 corresponding to the second wind inlet 31 of the top hot wind baffle 3 extend horizontally, and the top wall and the bottom wall of the bottom wind scooper 7 corresponding to the third wind inlet 51 of the bottom hot wind baffle 5 extend horizontally. Therefore, the air flow entering each air guiding cover can rapidly enter the top hot air chamber 30 and the bottom hot air chamber 50 under the suction action of the second air inlet 31 and the third air inlet 51, and the heat loss caused by the air flow flowing to the front side of each air inlet is avoided. Preferably, in this embodiment, the horizontal central plane of each wind scooper is trapezoidal, and the width of the trapezoid decreases from back to front, so that each wind scooper plays a better role in guiding and accelerating the entering airflow.
The top hot fan blade 33 and the bottom hot fan blade 53 are coupled to the motor 232 of the back hot air blower 23 through the coupling 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 first worm 421, a second worm 422, a third worm 423, a fourth worm 424 and a fifth worm 425, wherein the first gear 411 is installed on a shaft of a motor 232 of the back hot air blower 23, the first worm 421 extends vertically, a thread section of the middle part of the first worm forms a worm gear transmission with the first gear 411, two ends of the first worm 421 are respectively provided 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 thread ends of the rear ends of the second gear 412 and the second worm 422 form a worm gear transmission, the thread ends of the rear ends of the third gear 413 and the third worm 423 form a worm gear 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 and fifth worms 424 and 425 extend vertically and form worm gears with the fourth and fifth gears 414 and 415, respectively, and the top and bottom hot fan blades 33 and 53 are mounted on the fourth and fifth worms 424 and 425, respectively. The invention adopts worm and gear transmission, has stable transmission and low noise, can simultaneously drive the top hot fan blade 33 and the bottom hot fan blade 53 to rotate in the same direction through the rotation of the motor shaft 2321 of the back hot air blower 23, and further, when the oven works, the back hot fan blade 231, the top hot fan blade 33 and the bottom hot fan blade 53 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 232 of the back hot air blower 23, 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 hot air chambers, respectively.
The working process of the invention is as follows:
as shown in fig. 6, when the oven starts to work, the back hot air fan blade 231, the top hot air fan blade 33 and the bottom hot air fan blade 53 can rotate simultaneously (all three rotate clockwise), the cold air in the inner container 1 is quickly sucked into the back hot air chamber 20 through the first air inlet 21 of the back hot air baffle 2 by the back hot air fan blade 231, the hot air heated by the back heating pipe 24 enters the top wind scooper 6 and the bottom wind scooper 7 through the first upper wind outlet 221 and the first lower wind outlet 222 of the back hot air baffle 2, the air flow entering each wind scooper is accelerated for the first time at the front end of each wind scooper, the air flow after the first acceleration enters the top hot air chamber 30 and the bottom hot air chamber 50 respectively through the corresponding air inlets, the second speed increase is realized in each hot air chamber through the action of each hot air fan blade, and the reheating is realized through the heating of each heating pipe. Gas after the secondary speed increasing and reheating flows back to the front end of the inner container 1 through the second air outlet 32 of the top hot air baffle 3 and the third air outlet 52 of the bottom hot air baffle 5 respectively, flows towards the rear end of the inner container 1 under the action of the suction force of the first air inlet 21 of the back hot air baffle 2, forms high-speed hot air circulation, achieves rapid temperature rise of the inner container 1, rapidly transfers heat to food, achieves rapid temperature rise of the food, and meets the requirement of an air frying function.
Claims (11)
1. A hot air heating structure with an air frying function comprises a liner (1), a back hot air baffle (2) with a first air inlet (21) and a first air outlet (22) is arranged on the rear side of an inner cavity of the liner (1), a back hot air chamber (20) is enclosed by the back hot air baffle (2) and a back plate of the liner (1), a back hot air blower (23) is arranged on the back plate of the liner (1), back hot fan blades (231) of the back hot air blower (23) are positioned in the back hot air chamber (20), a motor (232) of the back hot air blower (23) is positioned behind the back plate of the liner (1), heating pipes (24) are arranged on the outer periphery of the back hot fan blades (231) of the back hot air blower (23), the first air inlet (21) of the back hot air baffle (2) and the back hot fan blades (231) of the back hot air blower (23) are arranged in a front-back opposite manner, it is characterized in that the top and the bottom of the inner cavity of the inner container (1) are respectively provided with a top hot air baffle (3) and a bottom hot air baffle (5), wherein the top hot air baffle (3) is provided with a second air inlet (31) and a second air outlet (32), the top hot air baffle (3) and the top plate of the inner container (1) enclose a top hot air chamber (30), a top hot air fan blade (33) is installed in the top hot air chamber (30), the outer periphery of the top hot air fan blade (33) is provided with a top heating pipe (34), the second air inlet (31) of the top hot air baffle (3) and the top hot air fan blade (33) are arranged oppositely up and down,
the bottom hot air baffle (5) is provided with a third air inlet (51) and a third air outlet (52), the bottom hot air baffle (5) and the top plate of the inner container (1) enclose a bottom hot air chamber (50), a bottom hot air chamber (50) is internally provided with a bottom hot air fan blade (53), the outer periphery of the bottom hot air fan blade (53) is provided with a bottom heating pipe (54), the third air inlet (51) of the bottom hot air baffle (5) is arranged opposite to the bottom hot air fan blade (53) up and down, moreover, the second air inlet (31) of the top hot air baffle (3) and the third air inlet (51) of the bottom hot air baffle (5) are respectively communicated with the first air outlet (22) of the back hot air baffle (2) in a fluid manner, and the first air inlet (21) of the back hot air baffle (2) is respectively communicated with the second air outlet (32) of the top hot air baffle (3) and the third air outlet (52) of the bottom hot air baffle (5) in a fluid mode.
2. The hot air heating structure according to claim 1, wherein the back hot air baffle (2) is vertically disposed at the rear side of the inner container (1), the first air inlet (21) is opened at the middle portion of the back hot air baffle (2), and the first air outlet (22) comprises a first upper air outlet (221) disposed at the upper end of the back hot air baffle (2) and a first lower air outlet (222) disposed at the lower end of the back hot air baffle (2),
the top hot air baffle (3) and the bottom hot air baffle (5) are respectively horizontally arranged at the top and the bottom of the inner container (1), the second air inlet (31) and the third air inlet (51) are respectively arranged in the middle of the top hot air baffle (3) and the bottom hot air baffle (5), and the second air outlet (32) and the third air outlet (52) are respectively arranged at the front ends of the top hot air baffle (3) and the bottom hot air baffle (5).
3. The hot air heating structure according to claim 2, wherein the sum of the air output of the first upper outlet (221) and the first lower outlet (222) is greater than 55% to 70% of the total air output of the back hot air baffle (2).
4. The hot air heating structure according to claim 2, further comprising a top air guiding cover (6) having a first air inlet (61) and a first air outlet (62) and a bottom air guiding cover (7) having a second air inlet (71) and a second air outlet (72), wherein the first air inlet (61) of the top air guiding cover (6) is communicated with the first upper air outlet (221) of the back hot air baffle (2) and the first air outlet (62) is communicated with the second air inlet (71) of the top hot air baffle (3), the second air inlet (71) of the bottom air guiding cover (7) is communicated with the first lower air outlet (222) of the back hot air baffle (2), and the second air outlet (72) is communicated with the third air inlet (51) of the bottom hot air baffle (5).
5. The hot air heating structure according to claim 4, wherein each of the wind scoopers is horizontally arranged, the cross section of each wind scooper is vertically arranged in a square shape and the size of each wind scooper decreases from front to back, the rear ends of the top wind scooper (6) and the bottom wind scooper (7) are opened to form the first air inlet (61) and the second air inlet (71) respectively, and each air inlet is respectively covered on the front surface of the back hot air baffle (2) where the first upper air outlet (221) and the first lower air outlet (222) are positioned, the front ends of the top wind scooper (6) and the bottom wind scooper (7) are sealed, the bottoms of the top air guide cover (6) and the bottom air guide cover (7) are respectively provided with the first air outlet (62) and the second air outlet (72), and each air outlet is respectively covered on the upper surface of the hot air baffle plate where the second air inlet (31) and the third air inlet (51) are positioned.
6. A hot wind heating structure according to claim 5, wherein the top walls of the rear ends of the top wind scooper (6) and the bottom wind scooper (7) are inclined downward from the rear to the front, and the bottom walls are inclined upward from the rear to the front.
7. The hot air heating structure according to claim 6, wherein the top wind scooper (6) has top and bottom walls extending horizontally corresponding to the second wind inlet (31) of the top hot air baffle (3), and the bottom wind scooper (7) has top and bottom walls extending horizontally corresponding to the third wind inlet (51) of the bottom hot air baffle (5).
8. The hot air heating structure as claimed in claim 7, wherein the horizontal central plane of each wind scooper is trapezoidal, and the width of the trapezoidal shape decreases from the rear to the front.
9. The hot air heating structure according to any one of claims 1 to 8, wherein the top wall and the bottom wall of the inner container (1) are recessed upward and downward to form an upper mounting cavity (11) and a lower mounting cavity (12), respectively, the top hot air baffle (3) is horizontally disposed on the opening of the upper mounting cavity (11) to form the top hot air chamber (30), and the bottom hot air baffle (5) is horizontally disposed on the opening of the lower mounting cavity (12) to form the bottom hot air chamber (50).
10. The hot air heating structure according to any one of claims 1 to 8, wherein the top hot fan blade (33) and the bottom hot fan blade (53) are linked with a motor shaft (2321) of the back hot air blower (23) through a linkage mechanism (4), respectively, 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 first worm (421), a second worm (422), a third worm (423), a fourth worm (424) and a fifth worm (425), wherein the first gear (411) is installed on the motor shaft (2321) of the back hot air blower (23), the first worm (421) extends vertically, a thread section of the middle portion of the first worm forms a worm gear transmission with the first gear (411), and both 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 extend horizontally respectively, wherein the second gear (412) and the threaded end at the rear end of the second worm (422) form worm gear transmission, the third gear (413) and the threaded end at the rear end of the third worm (423) form worm gear transmission, the fourth gear (414) and the fifth gear (415) are respectively installed in the middle of the second worm (422) and the third worm (423), the fourth worm (424) and the fifth worm (425) respectively extend vertically and form worm gear transmission with the fourth gear (414) and the fifth gear (415), and the top hot fan blade (33) and the bottom hot fan blade (53) are respectively installed on the fourth worm (424) and the fifth worm (425).
11. An oven having the hot wind heating structure of any one of claims 1 to 10.
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| CN202011191171.9A CN112493874B (en) | 2020-10-30 | 2020-10-30 | Hot air structure with air frying function and oven |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011191171.9A CN112493874B (en) | 2020-10-30 | 2020-10-30 | Hot air structure with air frying function and oven |
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| US4386558A (en) * | 1981-02-12 | 1983-06-07 | Holman J Harrison | Convection cooking equipment |
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| CN206026110U (en) * | 2016-07-28 | 2017-03-22 | 宁波方太厨具有限公司 | Oven inner container structure |
| CN108294640A (en) * | 2018-02-13 | 2018-07-20 | 浙江竣浦电器有限公司 | A kind of electric oven for frying function with air |
| CN108720643A (en) * | 2018-08-14 | 2018-11-02 | 佛山市顺德区酷福电器有限公司 | A kind of air ovens |
| CN209003634U (en) * | 2018-01-24 | 2019-06-21 | 广东格兰仕集团有限公司 | A kind of heated air circulation device and its oven |
| CN111202438A (en) * | 2020-01-14 | 2020-05-29 | 宁波方太厨具有限公司 | Oven inner container structure and oven with same |
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2020
- 2020-10-30 CN CN202011191171.9A patent/CN112493874B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386558A (en) * | 1981-02-12 | 1983-06-07 | Holman J Harrison | Convection cooking equipment |
| CN102188168A (en) * | 2010-03-12 | 2011-09-21 | 乐金电子(天津)电器有限公司 | Baking oven with uniform large-air-volume hot air convection barbecuing function |
| CN202891672U (en) * | 2012-10-11 | 2013-04-24 | 虞世高 | Frying pan by using air circulation speeding up to fry food |
| CN206026110U (en) * | 2016-07-28 | 2017-03-22 | 宁波方太厨具有限公司 | Oven inner container structure |
| CN209003634U (en) * | 2018-01-24 | 2019-06-21 | 广东格兰仕集团有限公司 | A kind of heated air circulation device and its oven |
| CN108294640A (en) * | 2018-02-13 | 2018-07-20 | 浙江竣浦电器有限公司 | A kind of electric oven for frying function with air |
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| CN111202438A (en) * | 2020-01-14 | 2020-05-29 | 宁波方太厨具有限公司 | Oven inner container structure and oven with same |
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| CN112493874B (en) | 2022-03-18 |
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