CN108903679B - Oven with circulation heating air duct structure - Google Patents
Oven with circulation heating air duct structure Download PDFInfo
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- CN108903679B CN108903679B CN201810988102.7A CN201810988102A CN108903679B CN 108903679 B CN108903679 B CN 108903679B CN 201810988102 A CN201810988102 A CN 201810988102A CN 108903679 B CN108903679 B CN 108903679B
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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
- A47J37/04—Roasting apparatus with movably-mounted food supports or with movable heating implements; Spits
- A47J37/041—Roasting apparatus with movably-mounted food supports or with movable heating implements; Spits with food supports rotating about a horizontal axis
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention discloses an oven with a circulating heating air duct structure, which comprises a shell and an oven cavity arranged in the shell, wherein an inclined plane which inclines inwards is arranged above the back of the oven cavity, the lower part of the inclined plane is connected with the back of the oven cavity, the back is provided with an air inlet, the inclined plane is provided with an upper heating source, and an air guide cavity is arranged outside the air inlet; the cavity wall of the front side of the baking cavity opposite to the air inlet is a combined inclined plane which is spliced up and down, and the combined inclined plane is obliquely arranged towards the inside of the baking cavity; still be equipped with the fan in the shell, and at least one fan wheel is located the wind-guiding intracavity is followed the air intake and is toasted the intracavity input air current. The oven of the invention improves the traditional circulating heating air duct structure, enhances the coverage range of heating air flow, so that the heat energy in the oven is more uniform, improves the heating cooking effect of the oven, and leads the oven to be more efficient and energy-saving.
Description
Technical Field
The invention relates to the field of household appliances for cooking, in particular to an oven with a circulating heating air duct structure.
Background
With the development of science and technology, people's demand for cooking and cooking is increasing day by day, and in order to make cooked food have more burnt flavor, an oven is generally adopted for cooking. At present, the oven on the market is generally in a rectangular frame structure, and a corresponding heating source is arranged in the oven for heating and cooking food. To the heating structure of oven, including setting up last heating source and the lower heating source at oven inner chamber, form upper and lower heating structure for food surface and bottom surface thermally equivalent do not need the user to do the upset operation to food, reduce the cooking process. In order to enable food to be heated more uniformly and quickly, the back heating source is also arranged at the back of the inner cavity of the novel oven, so that the oven forms a three-dimensional heating structure with three angles. However, the heat sources arranged at a plurality of angles irradiate and heat the food, only a fixed-point heating mode can be realized, and the corresponding parts of the food cannot be heated and cooked. Therefore, manufacturers in the prior art add an air duct structure for generating air flow, so that heat energy in the inner cavity of the oven is uniformly distributed, and food can be uniformly heated and cooked quickly.
The heating air duct structure of prior art generally sets up the air outlet baking the chamber, and the air intake sets up the wind-guiding chamber outward, and the position that the wind-guiding chamber is outside the air outlet sets up the air intake that feeds through baking the chamber, adopts centrifugal fan to take out the air current that bakes the chamber into the wind-guiding intracavity from the air outlet, utilizes centrifugal fan's characteristic to break up the air current, takes out from the air inlet outside the air outlet again and gets back to baking the chamber in, forms the circulation wind channel. But this heating air duct structure has certain defect, because under the effect of fan induced draft, returns the air current stroke of toasting the intracavity at the air intake and can not cover whole toasting the chamber, just is drawn back the wind-guiding intracavity by the suction air current guide of middle part air outlet, leads to the essence to toast the intracavity circulation flow's heating air current and can not cover toasting the chamber completely, influences the heating cooking effect.
If the fan of the air duct structure rotates reversely, the circulating airflow moves reversely, the airflow is pumped into the air guide cavity from the air inlet on the outer side, and then is pumped back to the motion track of the baking cavity from the air outlet on the middle part. Due to the characteristics of the centrifugal fan, the air suction force at the outer side is weak, the air flow cannot be effectively sucked, the air flow stroke of the air flow sucked into the air guide cavity from the air inlet is short, and the heat energy air flow in the baking cavity cannot be completely sucked into the air guide cavity for circulating operation, so that the circulating air flow driven by the heating air channel structure with the reverse operation of the fan cannot completely cover the whole baking cavity, and the heating effect is influenced.
Therefore, the structure of the heating air duct inside the oven in the prior art is a difficult problem to be researched by various large manufacturers, and an improved technical point is needed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an oven with a circulating heating air duct structure, which improves the traditional circulating heating air duct structure and enhances the coverage range of heating air flow, so that the heat energy in the oven is more uniform, the heating cooking effect of the oven is improved, and the oven is more efficient and more energy-saving.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an oven with a circulating heating air duct structure comprises a shell and an oven cavity arranged in the shell, wherein an inclined plane which is inclined inwards is arranged above the back of the oven cavity, the lower part of the inclined plane is connected with the back of the oven cavity, the back is provided with an air inlet, the inclined plane is provided with an upper heating source, and an air guide cavity is arranged outside the air inlet; the cavity wall of the front side of the baking cavity opposite to the air inlet is a combined inclined plane which is spliced up and down, and the combined inclined plane is obliquely arranged towards the inside of the baking cavity; still be equipped with the fan in the shell, and at least one fan wheel is located the wind-guiding intracavity is followed the air intake and is toasted the intracavity input air current.
Compared with the prior art, the oven with the circulating heating air duct structure is improved in the traditional heating circulating air duct structure, the baking cavity of the oven is set to be a polygonal cavity structure and comprises an inclined plane which is inclined inwards above the back of the baking cavity, a back surface which is connected with the lower part of the inclined plane, and a combined inclined plane which is spliced up and down on the cavity wall of the front surface of the baking cavity and opposite to the back surface, and the combined inclined plane is inclined towards the inside of the baking cavity, so that the polygonal cavity structure with a plurality of inclined planes is formed. The inclined plane is provided with an upper heating source, the back surface is provided with an air inlet, an air guide cavity and a fan impeller are arranged in the air inlet, and the fan impeller is used for inputting air flow into the baking cavity when a fan acts, so that heating air flow is produced in the baking cavity.
In practical application, the air flow input from the air inlet covers the whole depth of the baking cavity and directly reaches the front cavity wall of the baking cavity, the front cavity wall of the baking cavity is a combined inclined plane which is spliced up and down adjacently, the combined inclined plane is inclined towards the baking cavity to form an included angle structure, and the air flow is refracted by the included angle formed by the combined inclined plane to rise and then turns around after reaching the top surface of the baking cavity; and then returns to the area of the air inlet under the refraction of the inclined surface, and is pushed by the input air flow to circularly move, so that circularly rolling heating air flow is quickly formed in the baking cavity. This heating air current that the circulation was rolled covers whole roast chamber scope to heat energy evenly distributed in making the oven, improve the food cooking effect to placing in the roast chamber, let the oven more high-efficient more energy-conserving.
In addition, the upper heating source arranged on the inclined plane above the back of the baking cavity can effectively replace the traditional structure that heating sources are simultaneously arranged right above and at the back of the baking cavity, and the upper heating source arranged on the inclined plane above the back of the baking cavity irradiates and outputs heat energy to the center of the baking cavity in an inclined direction to heat and cook food loaded in the baking cavity, so that the space and the energy consumption of the heating sources arranged on the top surface and the back surface of the baking cavity of the oven are effectively saved, and the volume of the whole oven is reduced; moreover, the input can be effectively baked
The air flow heating in the baking cavity is in an ascending trend, and the circularly rolling heating air flow is quickly formed, so that the heating effect is improved.
The air flow structure in the oven is further improved, the inclined plane is provided with a heat source irradiation port, the heat source irradiation port is externally provided with the upper heating source and an accommodating cavity of the upper heating source, and the accommodating cavity is communicated with the air guide cavity. In order to ensure that the circulating heat energy in the baking cavity can uniformly and rapidly reach the heating temperature when the oven works, the air guide cavity is communicated with the accommodating cavity, so that the heat energy of an upper heating source is introduced into the air guide cavity from the accommodating cavity while the fan impeller inputs air flow to the air inlet, and the baking cavity is output from the air inlet, so that the air flow output from the air inlet is not only simple air flow but also heating flow with the heating temperature, and is matched with rolling air flow formed in the original baking cavity, the temperature of the heating air flow is rapidly increased, the heating cooking temperature is reached, and the cooking effect is further improved; moreover, under the structure, heat energy is brought into the baking cavity from the air inlet, and under the condition that a heating source is not additionally arranged, the scheme that the heating source is simultaneously arranged on the top surface and the back of the baking cavity is replaced, so that the internal space and the energy consumption are saved, and the baking oven is more energy-saving and efficient.
In addition, compared with the structure that the heating source is arranged at the back of the baking cavity and sleeved with the fan in the prior art, the heating source in the structure in the prior art can only irradiate the baking cavity from the back of the baking cavity at a horizontal angle to heat the back of the food in the baking cavity; or the heat source can only be used as a heat source for outputting hot air by the fan, and the hot air circularly flows through the air guide holes on the back wall of the baking cavity, so that multi-angle heat radiation can not be formed, and cooking hot flow can also be generated. Therefore, the upper heating source and the fan impeller are separately arranged, and the containing cavity for containing the upper heating source is communicated with the air guide cavity for arranging the fan impeller, so that on one hand, the upper heating source irradiates the center of the baking cavity from an inclined plane above the back of the baking cavity to heat the upper surface of food; on the other hand, because set up holding chamber and wind-guiding chamber intercommunication each other to under the rotatory effect of fan impeller, the heat energy that will go up the heating source and produce is introduced the wind-guiding intracavity from holding the chamber, lets the air current of following the air intake output have heat energy, rolls rapidly in toasting the intracavity and evenly spreads and reach heating temperature, improves the cooking effect, solves the problem that heating source and fan cup joint structure of prior art can not combine two kinds of functions.
Furthermore, a guide plate and a heat transfer port are arranged at the communication position of the accommodating cavity and the air guide cavity, the guide plate extends inwards from the air inlet, and the heat transfer port is arranged between the guide plate and the inner wall of the back of the air guide cavity. The heat energy generated by the upper heating source is introduced into the air guide cavity from the heat transfer port and is intensively output to the baking cavity under the action of the guide plate, so that the heat energy introduced into the air guide cavity is stored firstly and then is input into the baking cavity along with the output air flow, and the heating effect is improved.
Furthermore, the guide plate is matched with the profile of the air inlet and the shape of the fan impeller to form an arc-shaped baffle plate, a barrel-shaped air guide channel is formed, heat energy introduced from the heat transfer port is output in a centralized mode, and the flow guide effect is enhanced.
On the basis, a cover plate for covering the accommodating cavity and the air guide cavity is arranged at the back of the baking cavity, the cover plate is provided with the heat source irradiation port and the air inlet, and the heat source irradiation port and the air inlet are of net-shaped opening structures and are respectively matched with the accommodating cavity and the air guide cavity; the net-shaped opening structure of the air inlet comprises a forward hole and an inclined hole, wherein the forward hole is formed in the wall of the front cavity of the baking cavity, and the inclined hole is formed in the inclined hole in a downward inclined mode. Because the oil stain is difficult to be adhered to the baking cavity after cooking and cooking, the position at the back of the baking cavity is more because the circular heating airflow passes through the area which is easy to remain the oil stain, and the position at the inner part of the baking cavity is difficult to clean. Therefore, in order to conveniently clean the accommodating cavity and the air guide cavity and parts arranged in the accommodating cavity and the air guide cavity, the detachable cover plate is particularly arranged and covers the accommodating cavity and the air guide cavity, and the heat source irradiation port and the air inlet are arranged on the cover plate and matched with the accommodating cavity and the air guide cavity in position, so that the air channel structure is ensured, and meanwhile, the detachable cover plate is convenient to disassemble and clean and repair and replace parts. Wherein, the netted open pore structure of air intake includes forward hole and slant hole, the slant hole sets up for the downward sloping to the air current that makes from the air intake output sinks in toasting the chamber bottom, arrives toasting the positive chamber wall of chamber again, and the refraction rises to toasting the chamber top surface, then quilt inclined plane refraction returns, and the heating air current coverage that rolls in the further increase toasts the intracavity, makes toasting the case heat energy and distribute more evenly partially, improves the heating effect.
The air flow structure is further improved, the fan is arranged between the back of the baking cavity and the shell, the fan is a double-impeller fan and comprises a motor, a forward impeller and a reverse impeller, the forward impeller and the reverse impeller are connected with a driving shaft of the motor, the forward impeller is arranged in the air guide cavity, the reverse impeller is arranged between the baking cavity outside the air guide cavity and the shell, and heat dissipation holes are formed in the shell on the back of the baking cavity. The double-impeller fan is adopted, and the fan can realize two functions for the oven, on one hand, the forward impeller arranged in the air guide cavity is used for forming circulating heat flow in the oven cavity; on the other hand, the reverse impeller outside the air guide cavity is matched with a heat dissipation hole in the shell at the back of the oven and used for dissipating heat of the oven.
On the basis, the baking oven further comprises a fixing frame for fixing the motor and the reverse impeller, wherein the fixing frame is arranged between the baking cavity and the shell and covers the reverse impeller in a U-shaped frame body; and a driving shaft of the motor penetrates through the fixed frame to be connected with the reverse impeller. The fixing frame of the U-shaped frame body can cover and fix the reverse impeller, does not influence the output of the heat dissipation airflow generated during the operation of the reverse impeller, and effectively discharges the heat dissipated by the baking cavity from the heat dissipation holes of the back shell.
The structure of the oven is further improved, the combined inclined plane and the shell are integrally formed, or the combined inclined plane and the top surface of the baking cavity and the shell are integrally formed into a movable cover opening structure of the oven. The movable cover of the oven has two forms, one is a cover opening structure which is formed by integrating the combined inclined plane positioned on the front surface of the oven and the shell; the other is a cover opening structure which is formed by the combined inclined plane and the top surface of the baking cavity and is integrated with the shell. Especially, the cover opening structure which combines the inclined plane and the top surface of the baking cavity and is integrally formed with the shell enables the front part and the top part of the baking cavity of the oven to be opened to form a wide opening, so that a sufficient operable space is formed, a user can conveniently place large food materials into the baking cavity, for example, the whole roasted chicken and the like are processed, or the food materials in the baking cavity are subjected to feeding or other cooking processing, and the user experience is improved.
The oven is further improved in structure and comprises a food loading frame and a driving device for driving the food loading frame to rotate axially, the food loading frame is arranged in the center of the baking cavity in a transverse mode, and the rotating direction of the food loading frame is matched with the air flow direction of the air inlet. In order to further make the food material uniformly heated, a carrier for loading food is arranged in the oven, and the carrier can be preferably a multi-layer fixed frame or a rotating cage or the like transversely arranged in the baking cavity, so that the transverse surface of the carrier is matched with the circulating heating airflow in the baking cavity. Under the action of the driving device, the rotating direction of the carrier is matched with the output airflow direction of the air inlet, so that the rolling heating airflow formed in the baking cavity moves on the surface of the carrier along with the rotation of the carrier, the food heating effect on the carrier is accelerated, the heating is more uniform, and the cooking efficiency is improved. In addition, the object carrying frame is transversely arranged in the baking cavity and is in angle fit with the heat source irradiation port arranged on the inclined plane, so that the heat energy of the upper heating source output from the heat source irradiation port irradiates the transverse plane of the whole object carrying frame, the heating area is effectively increased, and the heating efficiency is improved.
Further, the bottom of the baking cavity is also provided with a lower heating source, a detachable oil receiving disc is arranged on the lower heating source, and the oil receiving disc is matched with the carrier in size and position. On one hand, a lower heating source is additionally arranged, so that a heating structure in the oven is more three-dimensional; on the other hand, the oil receiving disc matched with the object carrier is arranged, ingredients or moisture on the object carrier is stored in the cooking process, and the ingredients or the moisture are prevented from falling into the lower heating source to cause damage.
Drawings
FIG. 1 is an exploded view of the overall construction of the oven of the present invention;
FIG. 2 is a sectional view of the oven of the present invention 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a cross-sectional view of the oven of the present invention, FIG. 2;
FIG. 5 is an exploded view of a portion of the oven of the present invention;
FIG. 6 is a structural view of the baking chamber, the accommodating chamber and the air guiding chamber of the oven of the present invention;
fig. 7 is a structural view of the back of the oven cavity of the oven of the present invention.
Detailed Description
An oven with a circulating heating air duct structure according to the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 to 4, the oven includes a housing 1 and a baking cavity 2 disposed in the housing 1, an inclined plane 21 inclined inward is disposed above a back of the baking cavity 2, a back 22 of the baking cavity 2 is connected below the inclined plane 21, the back 22 is provided with an air inlet 41, the inclined plane 21 is provided with an upper heating source 3, the upper heating source 3 can adopt a heating tube or other heat output device, and an air guide cavity 4 is disposed outside the air inlet 41; the cavity wall of the front side of the baking cavity 2 opposite to the air inlet 41 is a combined inclined plane 23 which is spliced up and down, and the combined inclined plane 23 is obliquely arranged towards the inside of the baking cavity 2; the shell 1 is also internally provided with a fan 5, and at least one fan impeller is arranged in the air guide cavity 4 to input air flow into the baking cavity 2 from an air inlet 41.
The oven of the invention improves the traditional heating circulating air duct structure, the baking cavity 2 of the oven is set into a polygonal cavity structure, and the polygonal cavity structure comprises an inclined plane 21 above the back of the baking cavity 2, a back plane 22 below the connecting inclined plane 21, and an upper and lower spliced combined inclined plane 23 of the front cavity wall of the baking cavity 2 opposite to the back plane 22, wherein the combined inclined plane 23 is obliquely arranged towards the inside of the baking cavity 2, so that the polygonal cavity structure with a plurality of inclined planes is formed. The inclined plane 21 is provided with an upper heating source 3, the back 22 is provided with an air inlet 41, an air guide cavity 4 and a fan impeller are arranged in the air inlet 41, and the fan impeller is used for inputting air flow into the baking cavity 2 when a fan acts, so that heating air flow is produced in the baking cavity 2.
In practical application, as shown in fig. 4 (the direction of the circulating airflow in the baking cavity 2 is indicated in the drawing), when the oven works, the airflow input from the air inlet 41 covers the depth of the whole baking cavity 2 and directly reaches the front cavity wall of the baking cavity 2, the front cavity wall of the baking cavity 2 is a combined inclined surface 23 spliced up and down adjacently, the combined inclined surface 23 is inclined towards the inside of the baking cavity 2 to form an included angle structure, and the airflow is refracted by the included angle formed by the combined inclined surface 23 to rise and then turns around after reaching the top surface 24 of the baking cavity 2; then, under the refraction of the inclined plane 21, the air returns to the area of the air inlet 41 and is pushed by the input air flow to circularly move, so that the circularly tumbling heating air flow is formed in the baking cavity 2. Therefore, the formed circulating rolling heating airflow covers the whole range of the baking cavity 2, so that the heat energy in the oven is uniformly distributed, the food cooking effect of the baking cavity 2 is improved, and the oven is more efficient and more energy-saving.
In addition, the upper heating source 3 arranged on the inclined plane above the back of the baking cavity 2 can effectively replace the traditional structure that heating sources are arranged right above and at the back of the baking cavity 2, and the upper heating source 3 arranged on the inclined plane above the back of the baking cavity 2 irradiates and outputs heat energy to the center of the baking cavity 2 in the inclined direction to heat and cook food loaded in the baking cavity 2, so that the space and the energy consumption of the heating sources arranged on the top surface 24 and the back surface 22 of the baking cavity 2 are effectively saved, and the size of the whole oven is reduced; moreover, the air flow input into the baking cavity 2 can be effectively heated in an ascending trend, the circularly rolling heating air flow is quickly formed, and the heating effect is improved.
The combined inclined plane 23 and the outer shell 1 are integrally formed, or the combined inclined plane 23 and the top surface 24 of the baking cavity 2 and the outer shell 1 are integrally formed into a movable cover opening structure of the oven. That is, the movable cover of the oven has two forms: the first is a cover opening structure which is formed by integrating the combined inclined plane 23 positioned on the front surface of the oven and the shell 1; the second is an open cover structure in which the combined slope 23 and the top surface 24 of the oven cavity 2 are integrally formed with the housing 1. The attached fig. 1, 2 and 4 of the application are the second type, so that a spacious opening is formed after the front part and the top part of the oven are opened, a sufficient operation space is formed, and a user can conveniently place large food materials into the baking cavity 2. For example, the whole roast chicken is placed in the oven, and the food material placed in the oven cavity 2 is subjected to feeding or other cooking processing, so that the user experience is improved.
In order to make the circulating heat energy in the baking cavity reach the heating temperature uniformly and rapidly when the oven is in operation, the air flowing structure in the oven is optimized, as shown in fig. 1 to 5, the inclined plane 21 is provided with a heat source irradiation port 61, and the inclination angle of the inclined plane 21 can be preferably 45 to 55 degrees, so that the heat source irradiation port 61 can intensively irradiate the heat energy radiation of the upper heating source 3 to the middle position of the baking cavity 2. The upper heating source 3 and the accommodating cavity 6 of the upper heating source 3 are arranged outside the heat source irradiation port 61, the accommodating cavity 6 is communicated with the air guide cavity 4, so that when the fan impeller inputs air flow to the air inlet 41, heat energy of the upper heating source 3 is introduced into the air guide cavity 4 from the accommodating cavity 6, and then the air flow is output from the air inlet 41 to the baking cavity 2, so that the air flow output from the air inlet 41 is not only simple air flow, but also heating flow with heating temperature, and the temperature of the heating air flow is rapidly increased by matching with rolling air flow formed in the original baking cavity 2, thereby achieving the heating and cooking temperature and further improving the cooking effect; moreover, under the structure, heat energy is brought into the baking cavity 2 from the air inlet 41, and the scheme that a heating source is arranged on the back of the baking cavity 2 at the same time is replaced under the condition that the heating source is not additionally arranged, so that the internal space and the energy consumption are saved, and the oven is more energy-saving and efficient.
In addition, compared with the structure that the back of the baking cavity 2 is provided with the heating source which is sleeved with the fan in the prior art, the heating source in the structure in the prior art can only irradiate the baking cavity 2 from the back of the baking cavity 2 at a horizontal angle to heat the back of the food in the baking cavity 2; or the heat source can only be used as the heat source for outputting the heat flow air by the fan 5, and the air guide holes are arranged outside the air inlet 41 on the back wall of the baking cavity 2 to lead the heat flow air to return to the baking cavity 2 to form circular flow, thus not only forming multi-angle heat energy radiation, but also generating cooking heat flow. Therefore, the upper heating source 3 and the fan impeller are separately arranged, the accommodating cavity 6 for accommodating the upper heating source 3 is communicated with the air guide cavity 4 for arranging the fan impeller, on one hand, the upper heating source 3 irradiates the center of the baking cavity 2 from the inclined plane 21 above the back of the baking cavity 2, and heats the upper surface of the food; on the other hand, because the containing cavity 6 and the air guide cavity 4 are communicated with each other, under the action of rotation of the fan impeller, heat energy generated by the upper heating source 3 is introduced into the air guide cavity 4 from the containing cavity 6, air flow output from the air inlet 41 has heat energy, the air flow is rapidly rolled and uniformly dispersed in the baking cavity 2 to reach the heating temperature, the cooking effect is improved, and the problem that the sleeve joint structure of the heating source and the fan 5 in the prior art cannot combine two functions is solved.
Specifically, as shown in fig. 3, a flow guide plate 42 and a heat transfer port 43 are disposed at a communication position between the accommodating cavity 6 and the air guiding cavity 4, the flow guide plate 42 extends inward from the air inlet 41, and the heat transfer port 43 is disposed between the flow guide plate 42 and the inner wall of the back of the air guiding cavity 4. The heat energy generated by the upper heating source 3 is introduced into the air guide cavity 4 from the heat transfer port 43 and is intensively output to the baking cavity 2 under the action of the guide plate 42, so that the heat energy introduced into the air guide cavity 4 is stored and then is input into the baking cavity 2 along with the output air flow, and the heating effect is improved.
As shown in fig. 5 to 6, the baffle 42 is matched with the contour of the air inlet 41 and the shape of the fan impeller to form an arc-shaped baffle plate, so as to form a barrel-shaped air guide channel, so that the heat energy introduced from the heat transfer port 43 is concentrated and output, and the flow guide effect is enhanced.
On the basis, the grease is difficult to be adhered to the baking cavity 2 after cooking, and the position at the back of the baking cavity 2 is more difficult to be cleaned because the circulating heating airflow passes through the area where the grease is easy to remain and the position in the oven is difficult to be cleaned. Therefore, the accommodating cavity 6, the air guide cavity 4 and the components arranged in the accommodating cavity are convenient to clean. As shown in fig. 4, the back of the baking chamber 2 is provided with a cover plate 25 covering the accommodating chamber 6 and the air guide chamber 4, the cover plate 25 is detachably disposed, the cover plate 25 is provided with the heat source irradiation port 61 and the air inlet 41, the heat source irradiation port 61 and the air inlet 41 are in mesh-shaped opening structures, and are respectively matched with the positions of the accommodating chamber 6 and the air guide chamber 4, so as to ensure the air duct structure and facilitate disassembly, cleaning and part maintenance and replacement.
Wherein, the netted open pore structure of air intake 41 includes forward hole and slant hole, forward hole to roast 2 front chamber walls in chamber sets up, the slant hole is the downward sloping setting to the air current that makes from 41 outputs of air intake sinks in 2 bottoms in the chamber of toasting, arrives 2 front chamber walls in chamber of toasting again, and the refraction rises to 2 top surfaces 24 in chamber of toasting, then quilt inclined plane 21 refracts and returns, and then increases the heating air current coverage that rolls in 2 in the chamber of toasting, makes 2 heat energy of toasting case distribute more evenly on a partial basis, improves the heating effect.
As shown in fig. 5 to 7, the fan 5 is disposed between the back of the baking cavity 2 and the casing 1, the fan 5 is a dual-impeller fan, and includes a motor 51, a forward impeller 52 and a reverse impeller 53 connected to a driving shaft of the motor 51, the forward impeller 52 is disposed in the air guide cavity 4, the reverse impeller 53 is disposed between the baking cavity 2 and the casing 1 outside the air guide cavity 4, and the casing 1 at the back of the baking oven is provided with heat dissipation holes 11. On one hand, the forward impeller 52 arranged in the air guide cavity 4 is used for forming circulating heat flow in the baking cavity 2; on the other hand, the reverse impeller 53 outside the air guide cavity 4 is matched with the heat dissipation hole 11 on the oven back shell 1 and used for dissipating heat of the oven, so that the dual functions of the oven are realized.
On the basis, as shown in fig. 5 and 7, the baking oven further comprises a fixing frame 54 for fixing the motor 51 and the reverse impeller 53, wherein the fixing frame 54 is arranged between the baking chamber 2 and the housing 1 and covers the reverse impeller 53 in a U-shaped frame; the driving shaft of the motor 5 passes through the fixed frame 54 and is connected with the reverse impeller 53. The fixing frame 54 of the U-shaped frame body can cover and fix the reverse impeller 53, does not influence the output of the heat dissipation airflow generated when the reverse impeller 53 operates, and effectively discharges the heat dissipated by the baking cavity 2 from the heat dissipation hole 11 of the back shell 1.
In order to further make the food material uniformly heated, a carrier rack 7 for loading food and a driving device for driving the carrier rack 7 to rotate axially are arranged in the oven, as shown in fig. 1 to 2. The carrier 7 is arranged at the center of the baking cavity 2 in a transverse direction, and the rotation direction of the carrier 7 is matched with the air flow direction of the air inlet 41. The carrier 7 may preferably be a multi-level mounting or a rotating cage arranged laterally in the cooking chamber 2, such that the lateral surface of the carrier 7 cooperates with the circulating heating air flow inside the cooking chamber 2. Under the action of the driving device, the rotation direction of the carrier 7 is matched with the output airflow direction of the air inlet 41, so that the rolling heating airflow formed in the baking cavity 2 moves on the surface of the carrier 7 along with the rotation of the carrier 7, the food heating effect on the carrier 7 is accelerated, the heating is more uniform, and the cooking efficiency is improved. The carrier 7 is transversely arranged in the baking cavity 2 and is in angle fit with the heat source irradiation port 61 arranged on the inclined surface 21, so that the heat energy of the upper heat source 3 output from the heat source irradiation port 61 irradiates the transverse surface of the whole carrier 7, the heating area is effectively increased, and the heating efficiency is improved.
Preferably, as shown in fig. 1 to 2, a lower heating source 8 is further disposed at the bottom of the baking chamber 2, a detachable oil receiving tray 9 is disposed on the lower heating source 8, and the oil receiving tray 9 is adapted to the size and position of the rack 7. On one hand, the lower heating source 8 makes the heating structure in the oven more three-dimensional, and the lower heating source 8 can be preferably a heating device such as a heating tube arranged at the bottom of the oven cavity 2; on the other hand, the oil receiving tray 9 is used for receiving ingredients or moisture flowing down from the rack 7 during cooking, and avoids the ingredients or moisture from falling into the lower heating source 8 to cause damage.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. An oven with a circulating heating air duct structure comprises a shell and an oven cavity arranged in the shell, and is characterized in that an inclined plane which inclines inwards is arranged above the back of the oven cavity, the lower part of the inclined plane is connected with the back of the oven cavity, the back is provided with an air inlet, the inclined plane is provided with an upper heating source, and an air guide cavity is arranged outside the air inlet; the cavity wall of the front face of the baking cavity opposite to the air inlet is a combined inclined plane which is spliced up and down, the combined inclined plane is obliquely arranged towards the baking cavity to form an included angle structure, and air flow is refracted by an included angle formed by the combined inclined plane to rise; still be equipped with the fan in the shell, and at least one fan wheel is located the wind-guiding intracavity is followed the air intake and is toasted the intracavity input air current.
2. The oven of claim 1, wherein the inclined plane is provided with a heat source irradiation port, the heat source irradiation port is externally provided with the upper heating source and a containing cavity of the upper heating source, and the containing cavity is communicated with the air guide cavity.
3. The oven of claim 2, wherein a flow deflector and a heat transfer port are arranged at the communication position of the accommodating cavity and the air guide cavity, the flow deflector extends inwards from the air inlet, and the heat transfer port is arranged between the flow deflector and the inner wall of the back of the air guide cavity.
4. The oven of claim 3 wherein said deflector is in the form of an arcuate baffle that cooperates with the shape of said air inlet profile and fan wheel.
5. The oven of claim 2, wherein a cover plate covering the accommodating cavity and the air guide cavity is arranged at the back of the baking cavity, the cover plate is provided with the heat source irradiation opening and the air inlet, and the heat source irradiation opening and the air inlet are of a mesh-shaped perforated structure and are respectively matched with the accommodating cavity and the air guide cavity; the net-shaped opening structure of the air inlet comprises a forward hole and an inclined hole, wherein the forward hole is formed in the wall of the front cavity of the baking cavity, and the inclined hole is formed in the inclined hole in a downward inclined mode.
6. The oven of claim 1, wherein the fan is disposed between the back of the oven cavity and the housing, the fan is a dual-impeller fan comprising a motor and a forward impeller and a reverse impeller connected to a drive shaft of the motor, the forward impeller is disposed in the air guide cavity, and the reverse impeller is disposed between the oven cavity outside the air guide cavity and the housing; and a heat dissipation hole is formed in the shell at the back of the oven.
7. The oven of claim 6, further comprising a mounting bracket for mounting said motor and said counter-rotating impeller, said mounting bracket being disposed between said oven cavity and said housing and being a U-shaped frame for enclosing said counter-rotating impeller; the motor driving shaft penetrates through the fixed frame to be connected with the reverse impeller.
8. The toaster of claim 1, wherein said combined ramp is integrally formed with the housing, or said combined ramp and top surface of the toasting cavity are integrally formed with the housing as a removable lid structure of the toaster.
9. The oven as claimed in any one of claims 1 to 8, further comprising a carrier for loading food and a driving device for driving the carrier to rotate axially, wherein the carrier is disposed at the center of said oven cavity in a transverse direction, and the rotation direction of the carrier matches with the air flow direction of said air inlet.
10. The oven of claim 9, wherein a lower heating source is further disposed at the bottom of the baking chamber, and a detachable oil receiving tray is disposed on the lower heating source, and the oil receiving tray is adapted to the size and position of the rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810988102.7A CN108903679B (en) | 2018-08-28 | 2018-08-28 | Oven with circulation heating air duct structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810988102.7A CN108903679B (en) | 2018-08-28 | 2018-08-28 | Oven with circulation heating air duct structure |
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| CN108903679A CN108903679A (en) | 2018-11-30 |
| CN108903679B true CN108903679B (en) | 2020-11-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111000447B (en) * | 2019-12-31 | 2022-03-22 | 广东美的厨房电器制造有限公司 | Heating assembly and cooking device with same |
| CN113133684B (en) * | 2020-01-17 | 2023-10-24 | 广东美的生活电器制造有限公司 | Air frying pan |
| CN114847498A (en) * | 2022-06-13 | 2022-08-05 | 卓领电子(深圳)有限公司 | Fruit vegetables remove pesticide residue cleaning machine |
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