CN110974050B - Hot air assembly and heating device with same - Google Patents
Hot air assembly and heating device with same Download PDFInfo
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- CN110974050B CN110974050B CN201911418106.2A CN201911418106A CN110974050B CN 110974050 B CN110974050 B CN 110974050B CN 201911418106 A CN201911418106 A CN 201911418106A CN 110974050 B CN110974050 B CN 110974050B
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- hot air
- wind
- fan
- cover
- heating
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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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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention belongs to the technical field of domestic appliances, and particularly relates to a hot air assembly and a heating device with the same. The hot air assembly comprises a hot air cover, a fan cover plate, an axial flow fan, a plurality of wind shields and a heating element, wherein the fan cover plate and the hot air cover are enclosed to form an accommodating cavity, a first vent and a second vent arranged around the first vent are arranged on the fan cover plate, the axial flow fan is arranged in the accommodating cavity and arranged along the same axis with the first vent, the wind shields are arranged around the axial flow fan, a flow guide opening is formed between any two adjacent wind shields in the wind shields, the heating element is arranged in a space enclosed by the wind shields, and the second vent is arranged outside the space enclosed by the wind shields. According to the hot air assembly, the heat circulation of the heating cavity can be completed according to the set circuit, and the flowing speed and the stability of hot air flow are improved, so that the heat utilization rate of the heating piece is improved, and the purpose of quickly heating food is achieved.
Description
Technical Field
The invention belongs to the technical field of domestic appliances, and particularly relates to a hot air assembly and a heating device with the same.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
Along with the improvement of living standard of people, the application of the electric oven is more and more common, and the diversity of the baked food causes the performance of the electric oven to be required to be higher and higher. The traditional heating device of the electric oven adopts a heating element to generate heat, and the pressure in a limited space is increased along with the rotation of a centrifugal fan, so that high-temperature air is pressed into the oven through holes on the periphery. The high-temperature gas heats the food in the oven, then is discharged from the central hole under the action of the centrifugal fan, and is circulated and reciprocated. However, the centrifugal fan has a low working efficiency and the heat generated by the heating element is not fully utilized.
Disclosure of Invention
The object of the invention is to at least solve the problem of the heating element being inefficient to heat under the action of the centrifugal fan.
A first aspect of the present invention provides a hot air assembly comprising:
a hot air hood;
the fan cover plate and the hot air cover are enclosed to form an accommodating cavity, and a first vent and a second vent arranged around the first vent are arranged on the fan cover plate;
the axial flow fan is arranged in the accommodating cavity and is arranged along the same axis with the first ventilation opening;
the wind deflectors are annularly arranged on the axial flow fan, and a flow guide opening is formed between any two adjacent wind deflectors in the wind deflectors;
the heating piece is arranged in the space surrounded by the wind shields, and the second ventilation opening is arranged outside the space surrounded by the wind shields.
According to the hot air assembly, the axial flow fan and the heating piece are arranged in the accommodating cavity defined by the cover plate of the fan cover and the hot air cover, and are limited in a certain space by the plurality of wind shields, and hot air generated by the axial flow fan and the heating piece can be exchanged with other air in the accommodating cavity only through the flow guide openings between the two wind shields. Meanwhile, a first ventilation opening and a second ventilation opening are arranged on the fan cover plate, the first ventilation opening and the axial flow fan are arranged along the same axial direction, namely, the first ventilation opening is arranged inside the space enclosed by the plurality of wind shields, the second ventilation opening is arranged outside the space enclosed by the plurality of wind shields, therefore, when the heating element heats and the axial flow fan rotates, the airflow in the heating cavity can enter the accommodating cavity through one of the first ventilation opening and the second ventilation opening, and is discharged into the accommodating cavity again through the other one of the first ventilation opening and the second ventilation opening under the action of the axial flow fan after being heated by the heating element, therefore, the thermal cycle of the heating cavity is completed according to the set circuit, the flowing speed and the stability of hot air flow are improved, the heat utilization rate of the heating piece is improved, and the purpose of quickly heating food is achieved.
In addition, the hot air assembly according to the present invention may further have the following additional technical features:
the wind shields are arranged on the inner wall surface of the hot air cover arranged towards the direction of the fan cover plate.
In some embodiments of the present invention, the plurality of wind deflectors are disposed on a plate surface of the fan cover plate disposed toward the hot air hood.
In some embodiments of the present invention, the hot air assembly further includes an air guiding cover, the air guiding cover is connected to the hot air cover and/or the fan cover plate, and the air guiding cover is provided with the plurality of wind deflectors.
In some embodiments of the present invention, the wind scooper includes a plate body, the plate body is connected to the wind cover plate, and the plurality of wind deflectors are disposed on a surface of the plate body that is disposed toward the direction of the hot wind cover.
In some embodiments of the present invention, the plate body is provided with a first opening disposed corresponding to a position of the first ventilation opening, and a second opening disposed corresponding to a position of the second ventilation opening.
In some embodiments of the invention, the radial dimension of the first opening is greater than the maximum radial dimension of the axial fan.
In some embodiments of the present invention, the heat generating member is a heat generating pipe annularly disposed on an outer circumferential surface of the axial flow fan.
The heating device comprises a heating cavity and a hot air assembly, wherein the hot air assembly is the hot air assembly in any one of the above items, and the hot air assembly is communicated with the heating cavity through the first ventilation opening and the second ventilation opening.
In some embodiments of the invention, the heating device is an electric oven.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. Wherein:
FIG. 1 is a schematic view of a portion of a hot air assembly according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of the hot air assembly of FIG. 1;
FIG. 3 is a schematic structural view of the wind scooper of FIG. 2;
fig. 4 is a schematic structural view of the axial flow fan in fig. 2.
The reference numerals in the drawings denote the following:
100: a hot air assembly;
10: a hot air hood;
20: fan housing apron, 21: first vent, 22: a second vent;
30: axial flow fan, 31: a fan blade;
40: wind scooper, 41: wind deflector, 42: flow guide port, 43: plate body, 44: first opening, 45: second opening, 46: a support plate;
50: a heat generating member;
60: an electric motor.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Fig. 1 is a schematic view of a part of a hot air assembly 100 according to an embodiment of the present invention. Fig. 2 is a partial structural view of the hot air module 100 in fig. 1. Fig. 3 is a schematic structural view of the wind scooper 40 in fig. 2. As shown in fig. 1, 2 and 3, a first aspect of the present invention provides a hot air assembly 100, wherein the hot air assembly 100 is mainly used in an electric oven or an electric oven for supplying heat to a heating cavity of the electric oven or the electric oven, so as to effectively heat food. In some embodiments of the present invention, the hot air assembly 100 includes a hot air hood 10, a hood cover 20, an axial fan 30, a plurality of wind deflectors 40, and a heat generating member 50. The fan housing cover plate 20 and the hot air housing 10 enclose an accommodating cavity, and the fan housing cover plate 20 is provided with a first ventilation opening 21 and a second ventilation opening 22 surrounding the first ventilation opening 21. The axial flow fan 30 is disposed in the accommodating chamber and is disposed along the same axis as the first ventilation opening 21. The plurality of wind deflectors 41 are provided around the axial flow fan 30, and a guide opening 42 is formed between any adjacent two wind deflectors 41 of the plurality of wind deflectors 41. The heat generating member 50 is disposed in a space surrounded by the plurality of wind shielding plates 41, and the second ventilation opening 22 is disposed outside the space surrounded by the plurality of wind shielding plates 41.
According to the hot air assembly of the present invention, the axial flow fan 30 and the heating element 50 are disposed in the accommodating cavity enclosed by the cover plate 20 and the hot air cover 10, and the axial flow fan 30 and the heating element 50 are limited in a certain space by the plurality of wind shields 41, so that the hot air flow generated by the axial flow fan 30 and the heating element 50 can be exchanged with other air in the accommodating cavity only through the flow guide opening 42 between the two wind shields 41. Meanwhile, the fan housing cover plate 20 is provided with the first ventilation opening 21 and the second ventilation opening 22, and the first ventilation opening 21 and the axial flow fan 30 are arranged along the same axial direction, that is, the first ventilation opening 21 is arranged inside the space surrounded by the plurality of wind shields 41, and the second ventilation opening 22 is arranged outside the space surrounded by the plurality of wind shields 41, so that when the heating element 50 generates heat and the axial flow fan 30 rotates, the airflow in the heating cavity can enter the accommodating cavity through one of the first ventilation opening 21 and the second ventilation opening 22, and after being heated by the heating element 50, the airflow flows back to the accommodating cavity through the other one of the first ventilation opening 21 and the second ventilation opening 22 again under the action of the axial flow fan 30, thereby completing the thermal circulation of the heating cavity according to a set circuit, improving the flow speed and stability of hot airflow, and improving the heat utilization rate of the heating element 50, the purpose of heating food quickly and stably is achieved.
In some embodiments of the present invention, the hot air assembly 100 further includes an air guiding cover 40, the air guiding cover 40 is connected to the hot air cover 10 and/or the fan cover plate 20, and the air guiding cover 40 is provided with a plurality of air deflectors 41.
The wind scooper 40 can be connected to the hot-air hood 10 or the wind hood cover plate 20 by means of bolts or clips, and the wind deflectors 41 are arranged between the wind scooper 10 and the wind hood cover plate 20, so that one end of the wind deflector 41 is connected to the wind scooper 10, and the other end of the wind deflector 41 is connected to the wind hood cover plate 20, thereby ensuring that the airflow in the space surrounded by the wind deflectors 41 can only exchange with other air in the accommodating cavity through the flow guiding holes 42, effectively limiting the flow path of the airflow, and improving the heat utilization rate of the heating element 50. Meanwhile, the wind scoopers 40 are provided with the plurality of wind deflectors 41, so that the wind scoopers 40 can be detached at any time according to the requirement of the air flow, and the wind scoopers 40 with the guide openings 42 of different sizes can be replaced. In some embodiments of the present invention, the wind scooper 40 may be connected to the hot blast hood 10 and the hood cover 20 by bolts,
as shown in fig. 3, in some embodiments of the present invention, the wind scooper 40 includes a plate 43, the plate 43 is connected to the wind cover plate 20, and the wind deflectors 41 are disposed on a plate surface of the plate 43 facing the hot air hood 10. Due to the arrangement of the plate 43, the air guiding cover 10 is conveniently connected with the cover plate 20, and the strength of the wind deflector 41 can be increased.
The plate 43 is provided with a first opening 44 at a central position, and the shape and size of the first opening 44 are consistent with or larger than those of the first ventilation opening 21, so that the air flow can be allowed to pass through the first ventilation opening 21 to the maximum extent. The edge of the plate 43 is provided with a second opening 45 surrounding the first opening 44, and the shape and size of the second opening 45 are the same as or larger than those of the second ventilation opening 22, so that the air flow can be allowed to pass through the second ventilation opening 22 to the maximum. The plate body 43 is further provided with a support plate 46, and the support plate 46 is used for further improving the strength of the wind deflector 41 and preventing the wind deflector 41 from being deformed due to extrusion of the hot wind cover 10 and the wind cover plate 20 for a long time, so that the air tightness is not affected.
Fig. 4 is a schematic structural diagram of the axial flow fan 30 in fig. 2. As shown in fig. 4, in some embodiments of the present invention, the axial fan 30 includes a plurality of blades 31 having a certain setting angle, and the blades 31 can rotate under the driving of the motor 60, so as to form an airflow along the axial direction or the circumferential direction, and the specific air flow entering and exiting direction is determined by the setting angle of the blades 31 and the rotation direction of the axial fan 30. Since the axial flow fan 31 can perform input or output of the air flow in the linear direction, the first ventilation opening 21 includes a plurality of ventilation holes which are integrally formed in a circular shape in order to secure the input amount or the output amount of the air flow. Correspondingly, the first opening 44 is also a circular opening, and the radial dimension of the circular opening is larger than the maximum radial dimension of the axial flow fan 30, so as to ensure smooth circulation of the air flow.
In some embodiments of the present invention, the heat generating element 50 heats the space enclosed by the plurality of wind shielding plates 41 to generate high temperature air, and the axial fan 30 is driven by the motor 60 to rotate, so that the hot air flows through the guiding opening 42 of the air guiding cover 40 and enters the accommodating cavity outside the space enclosed by the plurality of wind shielding plates 41. As shown in fig. 3, four wind deflectors 41 are provided in the present embodiment, and four flow guides 42 are correspondingly provided, but in another embodiment of the present invention, the number of wind deflectors 41 and flow guides 42 is not limited. The hot air flow entering the accommodating cavity enters the heating cavity through the second ventilation opening 22, so that the food in the heating cavity is heated. Meanwhile, under the action of the axial flow fan 30, the airflow in the heating cavity flows back to the space surrounded by the plurality of wind shields 41 through the first ventilation opening 21 again, and the thermal cycle is completed. Wherein, the axial flow fan 30 has an improved circulation efficiency of the air flow compared to the centrifugal fan, and the air flow in the thermal cycle process is increased, thereby accelerating the flow of the high temperature air inside and outside the heating chamber and improving the stabilization speed of the temperature inside the heating chamber.
In some embodiments of the present invention, the heat generating member 50 is a heat generating pipe annularly disposed on the outer circumferential surface of the axial flow fan 30, so that the heat generated by the heat generating member 50 can more uniformly pass through each of the guiding holes 42 by the action of the axial flow fan 30.
In some embodiments of the present invention, a plurality of wind deflectors 41 may be further disposed on an inner wall surface of the hot air hood 10 disposed toward the fan cover plate 20, and the wind deflectors 41 and the flow guide openings 42 are formed on the bottom surface of the inner cavity of the hot air hood 10 by a casting process, so as to limit the flow direction of the hot air flow and increase the strength of the wind deflectors 41.
In some embodiments of the present invention, the plurality of wind deflectors 41 are provided on the plate surface of the fan cover plate 20 that faces the hot air cover 10. The wind shield 41 and the diversion port 42 are directly arranged on the wind shield cover plate 20 through metal bending or welding and other processes, so that the flow direction of hot air is limited, and the strength of the wind shield 41 can be increased.
Another aspect of the present invention also provides a heating apparatus, which may be an electric oven. The electric oven comprises a heating cavity and a hot air assembly 100, wherein the hot air assembly 100 is the hot air assembly 100 in any one of the above embodiments, and the hot air assembly 100 is in communication connection with the heating cavity through a first ventilation opening 21 and a second ventilation opening 22.
The heating element 50 heats the space enclosed by the plurality of wind shields 41 to generate high-temperature air, and the axial flow fan 30 is driven by the motor 60 to rotate, so that the hot air flows into the accommodating cavity outside the space enclosed by the plurality of wind shields 41 through the flow guide opening 42 on the air guide cover 40. The hot air flow entering the accommodating cavity enters the heating cavity through the second ventilation opening 22, so that the food in the heating cavity is heated. Meanwhile, under the action of the axial flow fan 30, the airflow in the heating cavity flows back to the space surrounded by the plurality of wind shields 41 through the first ventilation opening 21 again, and the thermal cycle is completed. Wherein, the axial flow fan 30 has an improved circulation efficiency of the air flow compared to the centrifugal fan, and the air flow in the thermal cycle process is increased, thereby accelerating the flow of the high temperature air inside and outside the heating chamber and improving the stabilization speed of the temperature inside the heating chamber.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A hot air assembly, comprising:
a hot air hood;
the fan cover plate and the hot air cover are enclosed to form an accommodating cavity, and a first vent and a second vent arranged around the first vent are arranged on the fan cover plate;
the axial flow fan is arranged in the accommodating cavity and is arranged along the same axis with the first ventilation opening;
the wind deflectors are annularly arranged on the axial flow fan, and a flow guide opening is formed between any two adjacent wind deflectors in the wind deflectors;
the heating part is arranged in the space surrounded by the plurality of wind shields, and the second ventilation opening is arranged outside the space surrounded by the plurality of wind shields;
the hot air flow generated by the axial flow fan and the heating piece can be exchanged with other air in the accommodating cavity only through the flow guide port.
2. The hot air assembly according to claim 1, wherein the plurality of wind deflectors are provided on an inner wall surface of the hot air hood that is provided in a direction toward the hood cover.
3. The hot air assembly according to claim 1, wherein the plurality of wind deflectors are disposed on a surface of the cover plate of the fan housing facing the hot air housing.
4. The hot air assembly according to claim 1, further comprising an air guide cover, wherein the air guide cover is connected to the hot air cover and/or the air cover plate, and the air guide cover is provided with the plurality of wind deflectors.
5. The hot air assembly according to claim 4, wherein the wind scooper includes a plate connected to the hood cover, and the plurality of wind scoopers are disposed on a surface of the plate facing the hot air hood.
6. The hot air assembly according to claim 5, wherein the plate body is provided with a first opening corresponding to a position of the first ventilation opening, and a second opening corresponding to a position of the second ventilation opening.
7. The hot air assembly according to claim 6, wherein a radial dimension of the first opening is greater than a maximum radial dimension of the axial fan.
8. The hot air assembly according to any one of claims 1 to 7, wherein the heat generating member is a heat generating pipe annularly disposed on an outer circumferential surface of the axial flow fan.
9. A heating apparatus comprising a heating chamber and a hot air assembly according to any one of claims 1 to 8, wherein the hot air assembly is in communication with the heating chamber through the first and second vents.
10. A heating device as claimed in claim 9, wherein the heating device is an electric oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911418106.2A CN110974050B (en) | 2019-12-31 | 2019-12-31 | Hot air assembly and heating device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911418106.2A CN110974050B (en) | 2019-12-31 | 2019-12-31 | Hot air assembly and heating device with same |
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| Publication Number | Publication Date |
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| CN110974050A CN110974050A (en) | 2020-04-10 |
| CN110974050B true CN110974050B (en) | 2021-06-29 |
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| CN201911418106.2A Active CN110974050B (en) | 2019-12-31 | 2019-12-31 | Hot air assembly and heating device with same |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111972999B (en) * | 2020-07-17 | 2022-04-01 | 广东美的白色家电技术创新中心有限公司 | Cooking device |
| CN111904293B (en) * | 2020-07-17 | 2022-04-01 | 广东美的白色家电技术创新中心有限公司 | Cooking device |
| CN112493878B (en) * | 2020-12-22 | 2022-04-19 | 广东美的厨房电器制造有限公司 | Cooking device |
| CN114668302A (en) * | 2020-12-24 | 2022-06-28 | 广东美的白色家电技术创新中心有限公司 | Heating device and cooking equipment |
| CN113384164B (en) * | 2021-06-30 | 2023-07-14 | 广东美的厨房电器制造有限公司 | Hot air assembly and cooking device |
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| CN110974050A (en) | 2020-04-10 |
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