CN112244660A - Hot air structure for cooking equipment and oven with same - Google Patents
Hot air structure for cooking equipment and oven with same Download PDFInfo
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- CN112244660A CN112244660A CN202011064662.7A CN202011064662A CN112244660A CN 112244660 A CN112244660 A CN 112244660A CN 202011064662 A CN202011064662 A CN 202011064662A CN 112244660 A CN112244660 A CN 112244660A
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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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- Food Science & Technology (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention relates to a hot air structure for cooking equipment and an oven, which comprises an inner container and an air heater, wherein a hot air baffle with an air inlet and an air outlet is arranged at the rear side of the inner container, a hot air chamber is enclosed by the hot air baffle and a back plate of the inner container, a first fan blade of the air heater is positioned in the hot air chamber, a motor of the air heater is arranged on the rear surface of the back plate of the inner container, a back heating pipe is arranged at the outer periphery of the first fan blade, a second fan blade arranged at the center of the first fan blade is arranged at the front side of the first fan blade in the hot air chamber, the rotating directions of the first fan blade and the second fan blade are opposite, and the second fan blade is an axial flow fan blade. Compared with the prior art, the invention can increase the air inlet amount at the air inlet of the hot air baffle, namely the air inlet amount of the hot air chamber, thereby increasing the air outlet amount of the hot air chamber, promoting the circulation of hot air in the liner, blowing more hot air to the surface of food, improving the cooking efficiency and improving the cooking effect.
Description
Technical Field
The invention relates to the field of cooking equipment, in particular to a hot air structure for the cooking equipment and an oven with the same.
Background
The existing cooking equipment with baking function, such as an electric oven or a steaming and baking all-in-one machine, is generally provided with a hot air baffle at the rear side of an inner container, the hot air baffle and a back plate of the inner container form a hot air chamber, an air heater is installed in the hot air chamber, and a back heating pipe is arranged around the outer periphery of a fan blade of the air heater. When the cooking equipment works, the fan blades of the hot air blower rotate, air in the inner container is sucked into the hot air chamber through the air inlet of the hot air baffle under the action of suction force, and air entering the hot air chamber flows back to the inner container through the air outlet of the hot air baffle under the action of centrifugal force of the fan blades after being heated by the back heating pipe. In addition, an exhaust passage with an exhaust fan is arranged above the inner container, and gas generated in the cooking process can be exhausted into the exhaust passage through the exhaust port under the action of the suction force of the exhaust fan.
From the above, the inner container assembly, the hot air blower, the hot air baffle, the exhaust channel and the like in the existing cooking device with the baking function form a hot air circulating system including heat conduction, heat storage and heat dissipation, so that the food can be cooked. Wherein, the amount of wind is the important index of considering cooking equipment culinary art performance, and the bigger the amount of wind then the oven preheating time is shorter under the general condition, and the better is the stoving effect. Furthermore, the air volume is generally related to the air outlet area, the air inlet area, the ratio of the air outlet area to the air inlet area, and the air speed of the air heater. At present, generally through the wind speed that increases the air heater of the mode of increase air heater rotational speed, and then increase the amount of wind to promote culinary art effect, however, the increase of air heater rotational speed, its noise at work also can increase correspondingly, and then the noise at work of increase complete machine influences user's use and experiences, in addition, also can cause the influence to the life of air heater.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a hot air structure for cooking equipment, which can effectively increase the air volume on the basis of the unchanged rotation speed of the air heater.
The second technical problem to be solved by the present invention is to provide an oven with the above hot air structure, which has a large air volume and a good cooking effect.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a hot-blast structure for cooking equipment, includes inner bag and air heater, and the rear side of this inner bag sets up the hot-blast baffle that has air intake and air outlet, and this hot-blast baffle encloses into hot-blast room with the backplate of inner bag, and the first flabellum of above-mentioned air heater is located above-mentioned hot-blast room and the motor of air heater is installed on the rear surface of inner bag backplate, and the outer periphery of this first flabellum is equipped with back heating pipe, its characterized in that, be equipped with the second flabellum that sets up with this first flabellum center in the front side of above-mentioned first flabellum in the hot-blast room, the rotation direction of this first flabellum is opposite with the second flabellum, and this second fla.
Furthermore, a first fan blade shaft for driving the first fan blade to rotate penetrates through a center hole of the first fan blade, a second fan blade shaft for driving the second fan blade to rotate penetrates through a center hole of the second fan blade, the first fan blade shaft and the second fan blade shaft are nested inside and outside and form clearance fit therebetween, the first fan blade shaft and the second fan blade shaft are linked with a motor shaft of the air heater through a linkage mechanism respectively, and the rotation directions of the first fan blade shaft and the second fan blade shaft are opposite. The first fan blade and the second fan blade rotate oppositely through the opposite rotation of the first fan blade shaft and the second fan blade shaft, namely the two fan blades can be driven to rotate oppositely through the driving of one motor, the structure is simple, and the control is convenient.
Further, the linkage mechanism is integrally cylindrical in shape and horizontally arranged along the front-rear direction, and comprises an outer cylinder, a first linkage cylinder, a second linkage cylinder, a first slider, a second slider, a first slide rail and a second slide rail, wherein the first slide rail and the second slide rail respectively extend along the front-rear direction, the rear port of the outer cylinder is closed to form a rear sealing plate, the second fan shaft penetrates through the outer cylinder along the central axis of the outer cylinder, the front end of the second fan shaft penetrates through the outer cylinder and is connected with the central hole of the second fan, the rear end of the second fan shaft is fixed on the rear sealing plate of the outer cylinder and penetrates out to be fixed with the output shaft of the motor, the first linkage cylinder is embedded in the outer cylinder and is fixed with the outer cylinder, the second linkage cylinder is arranged in the first linkage cylinder, and an installation gap is formed between the first linkage cylinder and the second linkage cylinder along the circumferential direction, the front end opening of the second linkage cylinder is closed to form a front sealing plate, the center of the front sealing plate is opened and horizontally extends forwards along the circumferential direction to form the first fan blade shaft, the first fan blade shaft is sleeved outside the second fan blade shaft and penetrates through the center hole of the first fan blade, the first sliding rail and the second sliding rail are respectively embedded in the installation gap and are arranged oppositely, the first sliding block and the second sliding block are respectively embedded on the first sliding rail and the second sliding rail and can respectively slide back and forth along the corresponding sliding rails, the first linkage cylinder and the second linkage cylinder are respectively provided with a first annular sliding chute and a second annular sliding chute, two ends of each sliding block are respectively provided with a sliding column in a protruding manner, each sliding column can be respectively embedded in the corresponding sliding chute and can slide back and forth along the corresponding sliding chute, and the first sliding block and the second sliding block respectively slide back and forth along the corresponding sliding rail, the first sliding chute and the second sliding chute, and the sliding directions of the first sliding block and the second sliding block are opposite. Therefore, the motor drives the first fan blade shaft and the outer barrel to rotate so as to drive the first linkage barrel to rotate, so that the first sliding block and the second sliding block connected to the first sliding groove of the first linkage barrel move relative to the first sliding groove and the corresponding sliding rail respectively, and the second linkage barrel is driven to rotate in the direction opposite to that of the first linkage barrel, so that the second fan blade shaft rotates in the direction opposite to that of the first fan blade shaft, and finally the first fan blade and the second fan blade rotate in the opposite directions.
Further, the track of the first sliding chute on the first linkage cylinder is the same as the track of the second sliding chute on the second linkage cylinder, and the track of each sliding chute on the corresponding linkage cylinder is similar to a sine function in the unfolded state of the peripheral wall of each linkage cylinder, and any position of each sliding chute is perpendicular to the peripheral wall of the linkage cylinder where the sliding chute is located. Therefore, the first linkage cylinder and the second linkage cylinder can be better ensured to realize mutual reverse rotation through the sliding of the sliding blocks relative to the corresponding guide rails and the sliding grooves.
The first fan blade shaft is arranged in the mounting hole in a penetrating mode, the front end of the first sliding rail and the front end of the second sliding rail are connected into a whole through a connecting plate extending up and down, a connecting hole is formed in the middle of the connecting plate, the front end of the mounting block is fixed to the back plate of the inner container, and the rear end of the mounting block is fixed in the connecting hole of the connecting plate. Therefore, the internal structure of the whole linkage mechanism is stable, and the mutual reverse rotation of the first linkage cylinder and the second linkage cylinder can be better realized.
Furthermore, the air inlet of the hot air baffle comprises a first air inlet unit positioned at the center and a second air inlet unit arranged around the first air inlet unit, wherein the first air inlet unit is a circular array formed by arranging circular first air inlet holes, the second air inlet unit is an annular array formed by arranging strip-shaped second air inlet holes, and each second air inlet hole rotates from inside to outside in the circumferential direction towards the same direction to form a radial shape. Through the design of the upper air inlet, the diffusion movement of air at the air inlet can be reduced, so that the air in the liner can better enter the hot air chamber through the air inlet under the driving of the second fan blade, and the air inlet amount of the air inlet is further increased.
Further, the air outlet includes first exhaust vent, second exhaust vent, third exhaust vent and fourth exhaust vent, wherein, first exhaust vent sets up the upside at hot-blast baffle, the downside at hot-blast baffle is seted up to the second exhaust vent, and third exhaust vent and fourth exhaust vent set up respectively on the left side and the right side of hot-blast baffle, above-mentioned each exhaust vent is rectangular hole and all extends along the length direction of the hot-blast baffle of its place department, and the length of second exhaust vent is longer than first exhaust vent, and the length of third exhaust vent is longer than the fourth exhaust vent. According to the invention, the first fan blade rotates clockwise, and the air output of each air outlet can be increased through the design of each air outlet, so that the integral air output of the air outlet is increased.
Further, the middle part of hot-blast baffle swells forward and forms the boss, and the antetheca of this boss vertically extends and above-mentioned air intake is seted up on this antetheca, and the equal level of upper wall and the lower wall of boss extends, and above-mentioned first exhaust vent and second exhaust vent are seted up respectively on this upper wall and lower wall, and the left wall and the right wall of boss slope backward from inside to outside respectively, and above-mentioned third exhaust vent and fourth exhaust vent are seted up respectively in the rear end of this left wall and the rear end of right wall. Through the design of the lug boss, on one hand, the actual volume of the hot air chamber can be increased, so that the air inlet amount and the air outlet amount of the hot air chamber are increased, and then the actual air amount of the inner container during cooking is increased, on the other hand, the air inlet is arranged on the front wall of the lug boss, the air inlet is closer to the door body of the cooking equipment, so that the air in the inner container can better flow back to the hot air chamber under the suction action of the second fan blade, the air outlet of the first air outlet hole and the air outlet of the second air outlet hole respectively face the top heating pipe on the inner top surface of the inner container and the inner bottom surface of the inner container (the bottom heating pipe is arranged at the bottom of the inner container), thereby can reheat the air-out of first exhaust vent and second exhaust vent for the gas temperature that first exhaust vent and second exhaust vent blown out is higher, and third exhaust vent and fourth exhaust vent blow to the lateral wall about the inner bag in the slant respectively, rebound again to the overware on, thereby improve the heating efficiency to food.
Furthermore, an upper mounting plate is arranged above the inner container, an air guide cover is covered on the upper surface of the upper mounting plate to form an exhaust channel with an exhaust fan, an exhaust port is formed on the top wall of the inner container, an air inlet with the exhaust channel is formed on the upper mounting plate, the lower end of a ventilation plug with a ventilation hole extending vertically is inserted into the exhaust port, the upper end of the ventilation plug is inserted into the air inlet, the upper end of the ventilation plug is downwards sunken along the circumferential direction by taking the ventilation hole as the center to form an annular water storage groove, the upper mounting plate is downwards sunken at the air inlet to form an air inlet groove, and an air inlet cover plate with an air inlet hole is arranged on an opening upper cover of the air inlet groove. Partial steam in the outer exhaust gas can take place the condensation in the recess of admitting air like this, and the condensation hydroenergy after the condensation is collected in the retaining recess to self heat through the inner bag during operation will the recess evaporation of retaining, thereby reduce outer exhaust gas's humidity, promote user's use and experience.
The technical scheme adopted for further solving the second technical problem is as follows: an oven with the hot air structure is provided.
Compared with the prior art, the invention has the advantages that: the front side of the first fan blade is provided with a second fan blade which is an axial flow fan blade and is opposite to the rotation direction of the first fan blade, so that the air inlet amount of the air inlet of the hot air baffle plate can be increased, namely the air inlet amount of the hot air chamber is increased, further, the air outlet amount of the hot air chamber is increased, the hot air circulation in the inner container is promoted, more hot air is blown to the surface of food, the cooking efficiency is improved, the cooking effect is improved, in addition, the rotation direction of the second fan blade is opposite to that of the first fan blade, the diffusion movement of the air outlet of the second fan blade can be avoided, the air outlet can be blown into the first fan blade more efficiently, the effective air inlet amount of the hot air chamber is further improved, in addition, because the rotation directions of the second fan blade and the first fan blade are opposite, the movement inertia of the hot air blown out from the air outlet is different from the air (the temperature is relatively lower) in the inner, the heating speed of the inner container is accelerated.
Drawings
FIG. 1 is a schematic structural view of an oven 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 partial exploded view of the toaster according to the embodiment of the present invention;
FIG. 4 is a cross-sectional view of an oven embodying the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic structural diagram of an air heater (overall) according to an embodiment of the present invention;
FIG. 7 is an exploded view of a heat gun (overall) according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a linkage mechanism according to an embodiment of the present invention;
FIG. 9 is an exploded view of a linkage mechanism in an embodiment of the present invention;
FIG. 10 is a cross-sectional view of the linkage mechanism in one of the states in accordance with an embodiment of the present invention;
FIG. 11 is a cross-sectional view of the linkage mechanism in another state of the embodiment of the present invention;
FIG. 12 is a cross-sectional view of a linkage mechanism in yet another state in accordance with an embodiment of the present invention;
FIG. 13 is a schematic structural view of a hot air baffle according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of the vent plug in the 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 14, an oven includes an exhaust structure, which includes an inner container 1 and a hot air blower 4. An upper mounting plate 7 is disposed above the inner container 1, an air guiding cover 9 is disposed on the upper surface of the upper mounting plate 7 to form an exhaust passage 90 having an exhaust fan 91, an exhaust port 11 is opened on the top wall of the inner container 1, an air inlet 71 having the exhaust passage 90 is opened on the upper mounting plate 7, the lower end of a ventilation plug 8 having a ventilation hole 81 extending vertically at the center is inserted into the exhaust port 11, the upper end is inserted into the air inlet 71, the upper end of the ventilation plug 8 is recessed downward in the circumferential direction with the ventilation hole 81 as the center to form an annular water storage groove 82 (as shown in fig. 14), the upper mounting plate 7 is recessed downward at the air inlet 71 to form an air inlet groove 72, and an air inlet cover plate 73 having an air inlet hole 731 is disposed on the opening of the air inlet groove 72. Partial steam in the outer exhaust gas can take place the condensation in air inlet groove 72 like this, and the condensation hydroenergy after the condensation can be collected in retaining recess 82 to self heat through the inner bag 1 during operation is with the evaporation of retaining recess 82, thereby reduces outer exhaust gas's humidity, promotes user's use and experiences.
Further, the rear side of the inner container 1 is provided with a hot air baffle 2 having an air inlet 21 and an air outlet 22, the hot air baffle 2 and the back plate of the inner container 1 define a hot air chamber 3, a first fan blade 41 of the hot air blower 4 is located in the hot air chamber 3, a motor 42 of the hot air blower 4 is mounted on the rear surface of the back plate of the inner container 1 through a mounting frame 43, a back heating pipe 122 is arranged around the outer periphery of the first fan blade 41, a second fan blade 5 arranged at the center of the first fan blade 41 is arranged on the front side of the first fan blade 41 in the hot air chamber 3, the rotation directions of the first fan blade 41 and the second fan blade 5 are opposite, the second fan blade 5 is an axial flow fan blade, meanwhile, the first fan blade 41 is a centrifugal fan blade, the first fan blade 41 rotates clockwise, and the second fan blade 5 rotates counterclockwise. The air inlet volume of 2 air intakes 21 departments of hot-blast baffle plate can be increased like this, increase the air inlet volume of hot-blast room 3 promptly, and then the air output of hot-blast room 3 of ability, promote the heated air circulation in inner bag 1, make there be more hot-blast to blow to the food surface, improve cooking efficiency, promote the culinary art effect, and the direction of rotation of second flabellum 5 is opposite with first flabellum 41, can avoid the diffusion motion of second flabellum 5 air-out, make its air-out blow in first flabellum 41 more high-efficiently, further improve the effective air inlet volume of hot-blast room 3, furthermore, because the direction of rotation of second flabellum 5 is opposite with first flabellum 41, the hot-blast air that air outlet 22 blew off is different with the motion inertia of the gas (the temperature is relatively lower) in inner bag 1 like this, make both can mix better, and then promote the inside temperature field.
In order to realize the opposite rotation of the first fan blade 41 and the second fan blade 5, a first fan blade shaft 41 for driving the first fan blade 41 to rotate is arranged in the central hole of the first fan blade 41, a second fan blade shaft 51 for driving the second fan blade 5 to rotate is arranged in the central hole of the second fan blade 5, the first fan blade shaft 411 and the second fan blade shaft 51 are nested inside and outside and form clearance fit therebetween, the first fan blade shaft 411 and the second fan blade shaft 51 are respectively linked with the motor shaft 421 of the air heater 4 through the linkage mechanism 6, and the rotation directions of the first fan blade 41 shaft and the second fan blade 5 shaft are opposite. The first fan blade shaft 411 and the second fan blade shaft 51 rotate oppositely to realize the opposite rotation of the first fan blade 41 and the second fan blade 5, that is, the two fan blades can be driven to rotate oppositely by the driving of one motor 42, the structure is simple, and the control is convenient.
Specifically, the linkage mechanism 6 is generally cylindrical in shape and horizontally disposed in the front-rear direction, and includes an outer cylinder 61, a first linkage cylinder 62, a second linkage cylinder 63, a first slider 64, a second slider 65, a first slide rail 661, and a second slide rail 662, wherein the first slide rail 661 and the second slide rail 662 respectively extend in the front-rear direction, a rear port of the outer cylinder 61 is closed to form a rear sealing plate 612, the second fan shaft 51 is inserted into the outer cylinder 61 along the central axis direction of the outer cylinder 61, a front end of the second fan shaft 51 is inserted through the outer cylinder 61 and is connected to a central hole of the first fan 41, a rear end of the second fan shaft 51 is fixed to the rear sealing plate 612 of the outer cylinder 61 and is fixed to the motor shaft 421 of the motor 42, the first linkage cylinder 62 is inserted into the outer cylinder 61 and is fixed to the outer cylinder 61, the second linkage cylinder 63 is disposed inside the first linkage cylinder 62, and a gap is formed between the first linkage cylinder 62 and the second linkage cylinder 63 in the circumferential direction A front port of the second linkage cylinder 63 is closed to form a front sealing plate 632, a center of the front sealing plate 632 is open and extends horizontally forward along a circumferential direction to form the first vane shaft 411, the first vane shaft 411 is sleeved outside the second vane shaft 51 and penetrates through a center hole of the first vane 5, the first slide rail 661 and the second slide rail 662 are respectively embedded in the installation gap and are arranged opposite to each other, the first slide block 64 and the second slide block 65 are respectively embedded in the first slide rail 661 and the second slide rail 662 and can respectively slide back and forth along the corresponding slide rails, the first linkage cylinder 62 and the second linkage cylinder 63 are respectively provided with a first annular slide groove 621 and a second annular slide groove 631, two ends of each slide block are respectively provided with a convex sliding column 67, each sliding column 67 can be respectively embedded in the corresponding slide groove and can slide back and forth along the corresponding slide rail, and the first slide block 64 and the second slide block 65 can respectively slide back and forth along the corresponding slide rail, The first sliding groove 621 and the second sliding groove 631 slide to move back and forth, and the sliding directions of the first slider 64 and the second slider 65 are opposite, as shown in fig. 10 to 12.
Thus, the motor 42 drives the second vane shaft 51 and the outer cylinder 61 to rotate, and further drives the first linkage cylinder 62 to rotate, so that the first sliding block 64 and the second sliding block 65 connected to the first sliding slot 621 of the first linkage cylinder 62 move relative to the first sliding slot 621 and the corresponding sliding rail, and further drive the second linkage cylinder 63 to rotate in the direction opposite to that of the first linkage cylinder 62, thereby realizing that the second vane shaft 51 rotates in the direction opposite to that of the first vane shaft 411, and finally realizing the relative reverse rotation of the first vane 41 and the second vane 5. Preferably, in this embodiment, the track of the first sliding groove 621 on the first linkage cylinder 62 is the same as the track of the second sliding groove 631 on the second linkage cylinder 63, and in the unfolded state of the peripheral wall of each linkage cylinder, the track of each sliding groove on the corresponding linkage cylinder is similar to a sine function, and any position of each sliding groove is perpendicular to the peripheral wall of the linkage cylinder where the sliding groove is located, so that the first linkage cylinder 62 and the second linkage cylinder 63 can be better ensured to realize mutual reverse rotation through the sliding of each sliding block relative to the corresponding guide rail and each sliding groove.
The inner container further includes a mounting block 68 having a mounting hole 681 penetrating in the front and rear direction, the first fan shaft 411 is inserted into the mounting hole 681, the front end of the first slide rail 661 and the front end of the second slide rail 662 are integrally connected to each other by a connecting plate 663 extending in the vertical direction, a connecting hole 6631 is formed in the middle of the connecting plate 663, the front end of the mounting block 68 is fixed to the back plate of the inner container 1, and the rear end thereof is fixed to the connecting hole 6631 of the connecting plate 663. Therefore, the internal structure of the whole linkage mechanism 6 can be stabilized, and the relative opposite rotation of the first linkage cylinder 62 and the second linkage cylinder 63 can be better realized.
In this embodiment, as shown in fig. 13, the air inlet 21 of the hot air baffle 2 includes a first air inlet unit 21a located at the center and a second air inlet unit 21b surrounding the first air inlet unit 21a, wherein the first air inlet unit 21a is a circular array formed by arranging circular first air inlet holes 211, the second air inlet unit 21b is an annular array formed by arranging strip-shaped second air inlet holes 212, and each second air inlet hole 212 rotates from inside to outside in the circumferential direction towards the same direction to form a radial shape. Through the design of the upper air inlet 21, the diffusion movement of the air at the air inlet 21 can be reduced, so that the air in the liner 1 can better enter the hot air chamber 3 through the air inlet 21 under the driving of the second fan blades 5, and the air inlet amount of the air inlet 21 is further increased. The air outlet 22 includes a first air outlet 221, a second air outlet 222, a third air outlet 223 and a fourth air outlet 224, wherein the first air outlet 221 is disposed on the upper side of the hot air baffle 2, the second air outlet 222 is disposed on the lower side of the hot air baffle 2, the third air outlet 223 and the fourth air outlet 224 are disposed on the left side and the right side of the hot air baffle 2 respectively, each of the air outlets is a long strip and extends along the length direction of the hot air baffle 2 where the air outlet is located, the length of the second air outlet 222 is longer than that of the first air outlet 221, and the length of the third air outlet 223 is longer than that of the fourth air outlet 224. According to the invention, the first fan blade 41 rotates clockwise, and the air output of each air outlet can be increased through the design of each air outlet, so that the integral air output of the air outlet 22 is increased.
Further, as shown in fig. 13, the middle of the hot air baffle 2 protrudes forward to form a boss 23, the front wall 231 of the boss 23 extends vertically, the air inlet 21 is disposed on the front wall 231, the upper wall 232 and the lower wall 233 of the boss 23 both extend horizontally, the first air outlet 221 and the second air outlet 222 are disposed on the upper wall 232 and the lower wall 233, respectively, the left wall 234 and the right wall 235 of the boss 23 are inclined backward from inside to outside, and the third air outlet 223 and the fourth air outlet 224 are disposed at the rear end of the left wall 234 and the rear end of the right wall 235, respectively. Through the design of the boss 23, on one hand, the actual volume of the hot air chamber 3 can be increased, thereby increasing the air intake and the air output of the hot air chamber 3, and then increasing the actual air output of the inner container 1 during cooking, on the other hand, the air inlet 21 is arranged on the front wall 231 of the boss 23, so that the air inlet 21 is closer to the door body of the oven, so that the air in the inner container 1 can better flow back to the hot air chamber 3 under the suction action of the second fan blade 5, and the air output of the first air outlet 221 and the second air outlet 222 respectively faces to the top heating pipe 121 on the inner top surface of the inner container 1 and the inner bottom surface of the inner container 1 (the bottom heating pipe 123 is arranged at the bottom of the inner container 1), so that the air output of the first air outlet 221 and the second air outlet 222 can be reheated, so that the air temperature blown out by the first air outlet 221 and the second air outlet 222 is higher, and the third air outlet 223 and the, then rebounds to the baking tray, thereby improving the heating efficiency of the food.
The working process of the invention is as follows:
the motor 42 of the hot air blower 4 rotates to drive the first fan shaft 411 and the outer cylinder 61 to rotate clockwise, the outer cylinder 61 rotates to make the first linkage cylinder 62 fixed with the outer cylinder rotate synchronously, so that the outer sliding posts 67 on each sliding block move relative to the first sliding slots 621 on the first linkage cylinder 62 respectively, thereby driving each sliding block to move relative to the corresponding guide rail, and the movement of each sliding block drives each sliding post 67 on the inner side of each sliding block to move relative to the second sliding slots 631, so that the first sliding block 64 and the second sliding block 65 slide along the corresponding sliding rail, the first sliding slot 621 and the second sliding slots 631 respectively to move back and forth, and the sliding directions of the first sliding block 64 and the second sliding block 65 are opposite, finally, the second fan blade 5 shaft rotates counterclockwise.
Thus, the clockwise rotation of the first fan shaft 411 drives the first fan blade 41 to rotate clockwise, and the counterclockwise rotation of the second fan shaft 51 drives the second fan blade 5 to rotate counterclockwise, so as to realize the opposite rotation of the first fan blade 41 and the second fan blade 5. The gas in the inner container 1 can be rapidly sucked into the first fan blade 41 through the rotation of the first fan blade 41, then the gas enters the second fan blade 5, the air is discharged from the air outlet holes under the rotation of the second fan blade 5 and flows back to the inner container 1 for heating food, the hot gas (especially the moisture in the food at the early stage of baking) with steam generated in the baking process enters the exhaust passage 90 through the exhaust port 11 and the ventilation plug 8 and is discharged outside, meanwhile, the steam in the hot gas can be condensed in the air inlet groove 72, the condensed water is collected in the water storage groove 82 of the ventilation plug 8, and the condensed water in the water storage groove 82 can be self-cleaned through the heating of the heat of the inner container 1.
Claims (10)
1. A hot air structure for cooking equipment comprises an inner container (1) and a hot air blower (4), the rear side of the inner container (1) is provided with a hot air baffle (2) with an air inlet (21) and an air outlet (22), the hot air baffle (2) and the back plate of the inner container (1) enclose a hot air chamber (3), a first fan blade (41) of the hot air blower (4) is positioned in the hot air chamber (3) and a motor (42) of the hot air blower (4) is arranged on the rear surface of the back plate of the liner (1), a back heating pipe (122) is arranged on the outer periphery of the first fan blade (41), it is characterized in that a second fan blade (5) which is arranged at the center of the first fan blade (41) is arranged at the front side of the first fan blade (41) in the hot air chamber (3), the rotation directions of the first fan blade (41) and the second fan blade (5) are opposite, and the second fan blade (5) is an axial flow fan blade.
2. The hot wind structure according to claim 1, wherein a first fan shaft (411) for driving the first fan blade (41) to rotate is inserted into a central hole of the first fan blade (41), a second fan shaft (51) for driving the second fan blade (5) to rotate is inserted into a central hole of the second fan blade (5), the first fan shaft (411) and the second fan shaft (51) are nested inside and outside and form clearance fit therebetween, the first fan shaft (411) and the second fan shaft (51) are linked with the motor shaft (421) of the hot wind machine (4) through a linking mechanism (6), and the rotating directions of the first fan shaft (411) and the second fan shaft (51) are opposite.
3. The hot wind structure according to claim 2, wherein the link mechanism (6) has an overall cylindrical shape and is horizontally disposed in the front-rear direction, and includes an outer cylinder (61), a first link cylinder (62), a second link cylinder (63), a first slider (64), a second slider (65), a first slide rail (661), and a second slide rail (662), the first slide rail (661) and the second slide rail (662) extending in the front-rear direction, respectively,
the rear end of the outer cylinder (61) is sealed to form a rear sealing plate (612), the second fan blade shaft (51) penetrates through the outer cylinder (61) along the central shaft direction of the outer cylinder (61), the front end of the second fan blade shaft (51) penetrates through the outer cylinder (61) and is connected with the central hole of the second fan blade (5), the rear end of the second fan blade shaft (51) is fixed on the rear sealing plate (612) of the outer cylinder (6) and penetrates through the outer cylinder (61) to be fixed with the motor shaft (421) of the motor (42),
the first linkage cylinder (62) is embedded in the outer cylinder (61) and fixed with the outer cylinder (61), the second linkage cylinder (63) is arranged in the first linkage cylinder (62), an installation gap is formed between the first linkage cylinder (62) and the second linkage cylinder (63) along the circumferential direction, the front port of the second linkage cylinder (63) is closed to form a front sealing plate (632), the center of the front sealing plate (632) is opened and horizontally extends forwards along the circumferential direction to form the first fan blade shaft (411), the first fan blade shaft (411) is sleeved outside the second fan blade shaft (51) and penetrates through the central hole of the first fan blade (5),
the first slide rail (661) and the second slide rail (662) are respectively embedded in the installation gap and are arranged oppositely, the first slide block (64) and the second slide block (65) are respectively embedded on the first slide rail (661) and the second slide rail (662) and can respectively slide back and forth along the corresponding slide rails, the first linkage cylinder (62) and the second linkage cylinder (63) are respectively provided with a first annular slide groove (621) and a second annular slide groove (631), two ends of each slide block are respectively provided with a sliding column (67) in a protruding manner, each sliding column (67) can be respectively embedded in the corresponding slide groove and can slide back and forth along the slide groove,
the first slider (64) and the second slider (65) slide along the corresponding slide rail, the first slide groove (621) and the second slide groove (631) respectively to move back and forth, and the sliding directions of the first slider (64) and the second slider (65) are opposite.
4. The hot wind structure according to claim 3, wherein the track of the first chute (621) on the first linkage cylinder (62) is the same as the track of the second chute (631) on the second linkage cylinder (63), and the track of each chute on the corresponding linkage cylinder is similar to a sine function in the unfolded state of the peripheral wall of each linkage cylinder, and any position of each chute is perpendicular to the peripheral wall of the linkage cylinder where the chute is located.
5. The hot air structure according to claim 3 or 4, further comprising a mounting block (68) having a mounting hole (681) penetrating in a front and rear direction, wherein the first fan shaft (411) is inserted into the mounting hole (681), a front end of the first slide rail (661) and a front end of the second slide rail (662) are integrally connected by a connecting plate (663) extending in a vertical direction, a connecting hole (6631) is formed in a middle portion of the connecting plate (663), a front end of the mounting block (68) is fixed to a back plate of the inner container (1), and a rear end thereof is fixed to the connecting hole (6631) of the connecting plate (663).
6. The hot air structure according to any one of claims 1 to 4, wherein the air inlet (21) of the hot air baffle (2) comprises a first air inlet unit (21a) located at the center and a second air inlet unit (21b) surrounding the first air inlet unit (21a), wherein the first air inlet unit (21a) is a circular array formed by arranging circular first air inlet holes (211), the second air inlet unit (21b) is an annular array formed by arranging strip-shaped second air inlet holes (212), and each second air inlet hole (212) rotates from inside to outside along the circumferential direction in the same direction to form a radial shape.
7. The hot wind structure according to any one of claims 1 to 4, wherein the wind outlet (22) comprises a first wind outlet (221), a second wind outlet (222), a third wind outlet (223) and a fourth wind outlet (224), wherein the first wind outlet (221) is disposed at an upper side of the hot wind baffle (2), the second wind outlet (222) is disposed at a lower side of the hot wind baffle (2), the third wind outlet (223) and the fourth wind outlet (224) are disposed at a left side and a right side of the hot wind baffle (2), each wind outlet is a long-strip-shaped hole and extends along a length direction of the hot wind baffle (2) where the wind outlet is located, and the length of the second wind outlet (222) is longer than that of the first wind outlet (221), and the length of the third wind outlet (223) is longer than that of the fourth wind outlet (224).
8. The hot air structure according to claim 7, wherein the middle of the hot air baffle (2) is protruded forward to form a boss (23), the front wall (231) of the boss (23) extends vertically while the air inlet (21) is opened on the front wall (231), the upper wall (232) and the lower wall (233) of the boss (23) both extend horizontally, the first air outlet (221) and the second air outlet (222) are opened on the upper wall (232) and the lower wall (233), respectively, the left wall (234) and the right wall (235) of the boss (23) are respectively inclined backward from inside to outside, and the third air outlet (223) and the fourth air outlet (224) are opened at the rear end of the left wall (234) and the rear end of the right wall (235), respectively.
9. The hot air structure according to claim 1 to 4, wherein an upper mounting plate (7) is provided above the inner container (1), an air guide cover (9) is covered on the upper surface of the upper mounting plate (7) to form an exhaust passage (90) having an exhaust fan (91), an exhaust port (11) is opened on the top wall of the inner container (1) and an air inlet (71) having the exhaust passage (90) is opened on the upper mounting plate (7),
the lower end of a ventilation plug (8) with a ventilation hole (81) extending vertically in the center is inserted into the exhaust port (11) and the upper end is inserted into the air inlet (71), the upper end of the ventilation plug (8) is downwards sunken along the circumferential direction by taking the ventilation hole (81) as the center to form an annular water storage groove (82), the upper mounting plate (7) is downwards sunken at the air inlet (71) to form an air inlet groove (72), and an air inlet cover plate (73) with an air inlet hole (731) is arranged on the opening upper cover of the air inlet groove (72).
10. An oven having the hot air structure as claimed in any one of claims 1 to 9.
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| CN202011064662.7A CN112244660B (en) | 2020-09-30 | 2020-09-30 | Hot air structure for cooking equipment and oven with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011064662.7A CN112244660B (en) | 2020-09-30 | 2020-09-30 | Hot air structure for cooking equipment and oven with same |
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| CN112244660B CN112244660B (en) | 2022-01-21 |
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| CN112754317A (en) * | 2021-01-28 | 2021-05-07 | 宁波方太厨具有限公司 | Cooking inner container structure with humidifying and baking functions and oven |
| CN112994314A (en) * | 2021-04-21 | 2021-06-18 | 常州江苏大学工程技术研究院 | Dust collector motor convenient to maintain and working method thereof |
| CN113180488A (en) * | 2021-01-28 | 2021-07-30 | 宁波方太厨具有限公司 | Air heater and oven for cooking device |
| CN113187746A (en) * | 2021-01-28 | 2021-07-30 | 宁波方太厨具有限公司 | Air heater for cooking device, cooking inner container structure and oven |
| CN113498982A (en) * | 2021-08-18 | 2021-10-15 | 华帝股份有限公司 | Air frying box and integrated stove |
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