CN110974047A - Heating furnace - Google Patents
Heating furnace Download PDFInfo
- Publication number
- CN110974047A CN110974047A CN201911305358.4A CN201911305358A CN110974047A CN 110974047 A CN110974047 A CN 110974047A CN 201911305358 A CN201911305358 A CN 201911305358A CN 110974047 A CN110974047 A CN 110974047A
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- Prior art keywords
- jet
- cavity
- chamber
- hole
- guide
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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
Abstract
The invention discloses a heating furnace, wherein a furnace body is arranged in the heating furnace, a furnace chamber is arranged in the furnace body, and a pressurizing cavity and a fan cavity are arranged outside the furnace body; a jet flow plate is arranged between the furnace chamber and the pressurizing chamber, jet holes are arranged on the jet flow plate, the furnace chamber is communicated with the fan chamber through a return air hole, and the pressurizing chamber is communicated with the fan chamber through an air inlet hole; the fan cavity is internally provided with a fan and a heater, and the fan cavity is internally provided with a temperature sensing device. According to the invention, the fan in the fan cavity is adopted to pump the air flow in the furnace cavity into the fan cavity, the air flow is heated by the heater in the fan cavity, then the air flow is input into the pressurization cavity through the air inlet hole and is conveyed into the furnace cavity through the pressurization cavity, and the circulating heating of the air flow is realized.
Description
Technical Field
The invention relates to the field of kitchen appliances, in particular to a heating furnace.
Background
A heating oven is a sealed electric appliance for baking food or drying products, and is classified into a home appliance and an industrial oven. The household heating furnace can be used for processing cooked wheaten food, and the industrial heating furnace is equipment which is used for drying products in industry, and is also called as an oven, a drying box and the like. Because the heating device is arranged in the heating furnace, the heating device generates heat, and the heat energy acts on the food in the furnace chamber of the heating furnace, thereby realizing the food processing. Because the installation position of heating device is relatively definite, when detecting the heating furnace internal temperature, because the position of heating device is relatively definite, and the department that is close to heating device, the temperature that detects is higher relatively, and keeps away from heating device's position, and the temperature is lower relatively, and then makes to detect inaccurate to the heating furnace internal temperature, further causes the inaccurate problem of heating furnace temperature control.
Disclosure of Invention
The invention mainly aims to provide a heating furnace, which aims to solve the problem of inaccurate temperature control in the conventional heating furnace.
In order to achieve the purpose, the heating furnace provided by the invention is characterized in that a furnace body is arranged in the heating furnace, a furnace chamber is arranged in the furnace body, and a supercharging cavity and a fan cavity are arranged outside the furnace body;
a jet flow plate is arranged between the furnace chamber and the pressurizing chamber, jet holes are arranged on the jet flow plate, the furnace chamber is communicated with the fan chamber through a return air hole, and the pressurizing chamber is communicated with the fan chamber through an air inlet hole;
the fan cavity is internally provided with a fan and a heater, and the fan cavity is internally provided with a temperature sensing device.
Optionally, the temperature sensing device is disposed on one side of the fan cavity close to the return air hole.
Optionally, the pressurization cavities are two groups which are arranged on the outer side of the furnace body in an aligned mode, and the air inlet holes are formed between the two groups of pressurization cavities and the fan cavity respectively.
Optionally, an inclined guide plate is arranged at one end, away from the air inlet hole, of the pressurization cavity, and a guide surface is formed on the surface of one side, facing the jet flow plate, of the guide plate;
and the air flow entering the end, far away from the air inlet hole, of the pressurization cavity is reflected towards the jet plate through the guide surface.
Optionally, the angle between the guide plate and the jet plate is adjustable.
Optionally, a heater is arranged in the fan cavity, and airflow is heated by the heater and then is input into the pressurization cavity through the air inlet hole.
Optionally, a guide part is arranged on one side surface of the jet flow plate facing the furnace cavity;
the guide part corresponds to the position of the jet hole, and the airflow output by the jet hole is input into the furnace cavity through the guide part.
Optionally, the guide portion is provided internally with a guide hole coaxial with the jet hole.
Optionally, the jet hole and the guide hole form a jet channel, and the inner diameter of the jet channel gradually decreases from the jet hole to the guide hole.
Optionally, a guide hole of the guide part located in the middle of the jet flow plate is opened towards the middle of the jet flow plate;
the guide hole of the guide part positioned at the edge of the jet flow plate is opened towards the inner wall of the furnace chamber.
According to the technical scheme, the fan in the fan cavity is adopted to pump the airflow in the furnace cavity into the fan cavity, the airflow is heated by the heater in the fan cavity, then the airflow is input into the pressurization cavity through the air inlet hole and conveyed into the furnace cavity through the pressurization cavity, and the circulating heating of the airflow is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the internal structure of a heating furnace according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic view illustrating an installation position of a temperature sensing device of a heating furnace according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a jet plate structure according to an embodiment of the invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | |
| 12 | |
20 | Pressurizing |
| 21 | |
22 | |
| 23 | |
24 | |
| 30 | |
31 | |
| 32 | |
33 | |
| 34 | |
35 | |
| 36 | |
40 | Temperature sensing device |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic view of an internal structure of a heating furnace according to an embodiment of the present invention, and the present invention provides a heating furnace 10, wherein a furnace body 11 is disposed inside the heating furnace 10, a furnace chamber 12 is disposed inside the furnace body 11, and a pressure increasing cavity 20 and a fan cavity 30 are disposed outside the furnace body 11; a jet flow plate 21 is arranged between the furnace chamber 12 and the supercharging cavity 20, jet holes 24 are arranged on the jet flow plate 21, the furnace chamber 12 is communicated with the fan cavity 30 through a return air hole 31, and the supercharging cavity 20 is communicated with the fan cavity 30 through an air inlet hole 32; the fan cavity 30 is internally provided with a fan 33 and a heater 34, and the fan cavity 30 is internally provided with a temperature sensing device 40. When the fan 33 is operated, the fan 33 draws the air in the cavity 12 into the fan cavity 30 through the return air holes 31, and the air flow enters the plenum cavity 20 through the air inlet holes 32 and is input into the cavity 12 through the jet holes 24 on the jet plate 21 under the action of the fan 33, and circulates.
Because the temperature in the heating furnace 10 rises when the heating furnace 10 is in operation, the temperature in the heating furnace 10 is high because the installation position of the heating source in the heater 34 is constant, the temperature in the position close to the heating source in the furnace chamber 12 is easily high, the food is easily scorched at high temperature when being close to the heating source, the temperature in the position far away from the heating source is low, and the position far away from the heating source is not cooked, which affects the normal processing of the food. In this embodiment, the fan 33 draws the air flow inside the cavity 12 into the fan cavity 30, and the air flow passes through the fan cavity 30 and then is pressurized and input into the cavity 12 through the pressurization cavity 20 again, so as to realize air flow circulation, further promote uniform temperature distribution inside the cavity 12, and uniformly heat food.
Because the air flow can circulate in the furnace chamber 12, the fan chamber 30 and the pressurizing chamber 20, the heat source can be fully utilized, and the food in the furnace chamber 12 can be rapidly heated; after the airflow enters the pressurizing cavity 20 from the fan cavity 30, the pressure inside the pressurizing cavity 20 is higher than the pressure inside the oven cavity 12 due to the arrangement of the jet flow plate 21, the jet holes 24 can be uniformly distributed on the jet flow plate 21, and when the airflow is injected into the oven cavity 12 from the jet holes 24, the airflow can be more dispersed, so that the heat can be fully applied to the food inside the oven cavity 12, and uniform heating can be realized.
The air flow is sucked into the fan cavity 30 under the action of the fan 33, the temperature of the air flow is detected through the temperature sensing device 40 at the moment, and the air flow in the furnace cavity 12 is circularly sucked into the fan cavity 30, so that the temperature in the furnace cavity 12 can be continuously detected, the accurate detection of the temperature in the furnace cavity 12 is realized, and the normal operation of control equipment is facilitated.
The heat source inside the cavity 12 may be heat generated by auxiliary components such as the heater 34, and may also be hot air generated during microwave heating. When the food heating device is installed, the heating device can be arranged at the bottom of the oven cavity 12, the jet flow plate 21 is arranged at the top of the oven cavity 12, when the heating device operates, the bottom of food is heated, when the fan 33 operates, hot air flow is pumped into the fan cavity 30, and the hot air flow is pressurized and input to the upper surface of the food through the pressurization cavity 20, so that the upper surface and the lower surface of the food are uniformly heated, and in the air flow circulation process in the oven cavity 12, the air in the oven cavity 12 continuously participates in circulation, so that the food heating efficiency is higher.
In another embodiment of the present invention, a magnetron is disposed outside the oven body 11, and the magnetron is used to heat food in the oven cavity 12, so as to achieve an effect of increasing the temperature inside the oven cavity 12, and when the airflow inside the oven cavity 12 circulates, the inside of the oven cavity 12 can be heated quickly and uniformly.
A heating device may be disposed in the fan cavity 30, and the air in the fan cavity 30 is heated by the heating device, so that the air can be uniformly heated in the furnace cavity 12 when the air flow circulates. The heating device may also be disposed in the pressure increasing chamber 20, and the heat is uniformly applied to the inside of the cavity 12 by using the circulating air flow.
Referring to fig. 1 and 2, fig. 2 is a front view of fig. 1, in an embodiment of the present invention, a heater 34 is disposed in the blower chamber 30, and airflow is heated by the heater 34 and then is input into the plenum chamber 20 through the air inlet holes 32. The heater 34 may be disposed in the blower chamber 30 on a side thereof adjacent to the air inlet opening 32.
Taking the case that the pressurizing cavity 20 is arranged above the furnace body 11 as an example, when the fan 33 operates, airflow enters the pressurizing cavity 20 from the direction H in fig. 2, the airflow is heated in the pressurizing cavity 20 by the heater 34, the heated airflow is conveyed into the pressurizing cavity 20 through the air inlet hole 32 along the direction a in fig. 2, the airflow is pressurized in the pressurizing cavity 20 and conveyed into the furnace cavity 12 along the direction C in fig. 2, and primary airflow circulation is realized.
When the pressurizing cavity 20 is arranged below the furnace body 11, after the airflow enters the fan cavity 30 along the direction H in fig. 2, the airflow enters the pressurizing cavity 20 along the direction B in fig. 2, and the pressurized airflow is input into the furnace cavity 12 along the direction D in fig. 2, so that airflow circulation is realized.
In order to improve the heating efficiency, the pressurizing cavities 20 are two groups which are arranged at the outer side of the furnace body 11 in an aligned manner, and the air inlet holes 32 are respectively arranged between the two groups of pressurizing cavities 20 and the fan cavity 30. When the fan 33 is operated, the air flow in the fan cavity 30 is respectively input into the two groups of the pressurizing cavities 20 through the air inlet holes 32, the air flow in the two groups of the pressurizing cavities 20 is respectively input into the oven cavity 12 from two opposite directions of the oven cavity 12, and simultaneously, two surfaces of food are heated, so that the food is rapidly heated.
Take two sets of pressure boost chamber 20 for upper and lower structure as an example, because the air current can be followed upper and lower surface and heated food for when the hot gas flow acted on the food surface, the working face was bigger, and the heating effect is more even, avoided the problem that the heating position that current food heating mode exists concentrates.
Referring to fig. 3, fig. 3 is a schematic view illustrating an installation position of a temperature sensing device of a heating furnace according to an embodiment of the present invention, in order to facilitate real-time detection of the temperature inside the furnace cavity 12, in an embodiment of the present invention, the temperature sensing device 40 is disposed on a side of the fan cavity 30 close to the return air hole 31. The temperature sensing device 40 detects the gas in the furnace chamber 12 in real time, so as to realize accurate temperature control of the temperature of the furnace chamber 12.
When the temperature sensing device 40 is installed, a plurality of temperature sensing devices 40 may be uniformly distributed in the fan cavity 30, so that the temperature sensing devices perform multi-point detection on the airflow entering the fan cavity 30 from the return air hole 31 in the fan cavity 30, so as to accurately measure the temperature change in the oven cavity 12.
With continued reference to fig. 1 and 2, an inclined guide plate 35 is disposed at an end of the plenum chamber 20 away from the air inlet opening 32, and a guide surface 36 is formed on a side surface of the guide plate 35 facing the jet plate 21; the air flow entering the plenum chamber 20 at the end remote from the air inlet openings 32 is reflected toward the air jet plate 21 by the guide surface 36. When the airflow is inputted into the pressure increasing chamber 20 in the direction a in fig. 2, part of the airflow is inputted into the pressure increasing chamber 20 in the direction C in fig. 2, and part of the airflow is further conveyed to the end away from the air inlet opening 32, and when the airflow contacts the guide surface 36, the airflow is reflected toward the flow plate 21 by the guide surface 36, so that the airflow is conveyed into the cavity 12 in the direction E in fig. 2.
Because the guide surface 36 can transmit part of the airflow in the direction E in fig. 2, the airflow can be transmitted to the middle of the oven cavity 12, so that the airflow can uniformly act on the food in the oven cavity 12, thereby avoiding the airflow from generating turbulent flow in the pressurizing cavity 20 and improving the airflow utilization efficiency.
When two sets of the pressurizing cavities 20 are arranged, the airflow far away from one end of the air inlet hole 32 is conveyed into the furnace cavity 12 along the direction E and the direction F in fig. 2 respectively under the action of the corresponding guide plate 35, so that the hot airflow is fully utilized.
Optionally, in this embodiment, an angle between the guide plate 35 and the jet plate 21 is adjustable. By adjusting the relative angle between the guide plate 35 and the flow jet plate 21, the reflection angle of the guide surface 36 to the airflow can be changed, and further the flow direction of part of the airflow can be changed, so that the guide plate 35 reflects the hot airflow to a specific part inside the oven cavity 12, and the utilization efficiency of heat is improved.
Referring to fig. 4, fig. 4 is a schematic view illustrating a structure of a jet flow plate according to an embodiment of the present invention, in an embodiment of the present invention, a guide portion 22 is disposed on a surface of the jet flow plate 21 facing the cavity 12; the guide portion 22 corresponds to the jet hole 24, and the airflow output from the jet hole 24 is input into the cavity 12 through the guide portion 22. When the airflow enters the oven cavity 12 through the jet holes 24, the conveying direction of the airflow can be changed under the action of the guide part 22, so that directional air supply is realized.
The guide portion 22 may be disposed on the surface of the jet plate 21 in a protruding manner, or may be a strip-shaped or arc-shaped sheet-shaped structure disposed on the surface of the jet plate 21, when the airflow is output from the jet hole 24, the airflow continues to flow along the guide portion 22, and the distribution and extension angles of the guide portion 22 can achieve the effect of changing the flow direction of the airflow, thereby realizing directional air supply when necessary.
In this embodiment, optionally, the guide portion 22 is a protrusion structure protruding on the surface of the jet plate 21, and a guide hole 23 coaxial with the jet hole 24 is formed in the middle of the guide portion 22. The adjustment of the jet direction is achieved by changing the angle of the end of the guide part 22 away from the jet plate 21.
In order to improve the heating efficiency, in this embodiment, further optionally, the jet hole 24 and the guide hole 23 form a jet channel, and an inner diameter of the jet channel gradually decreases from the jet hole 24 to the guide hole 23. When the airflow is conveyed into the furnace chamber 12 through the jet flow channel, the inner diameter of the jet flow channel is gradually reduced, so that the flow velocity of the airflow is increased, and the inside of the furnace chamber 12 can be rapidly heated when the airflow is input into the furnace chamber 12, so that the heating efficiency is improved.
In order to avoid the hot air flow from concentrating the heating surface of the food too much, in this embodiment, the guide hole 23 of the guide portion 22 located in the middle of the jet plate 21 is further opened toward the middle of the jet plate 21; the guide hole 23 of the guide portion 22 located at the edge of the current projecting plate 21 is opened toward the inner wall of the cavity 12. The guiding hole 23 located in the middle portion conveys hot air flow toward the surface of the flow jet plate 21, the hot air flow output from the guiding hole 23 located at the edge of the flow jet plate 21 is conveyed to the inner wall of the oven cavity 12, and under the action of the inner wall of the oven cavity 12, the air flow is reflected toward the surface of the food far away from the flow jet plate 21, so that the hot air flow can uniformly act on each surface of the food, and the food is uniformly heated.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A furnace body is arranged in the heating furnace, and a furnace chamber is arranged in the furnace body;
a jet flow plate is arranged between the furnace chamber and the pressurizing chamber, jet holes are arranged on the jet flow plate, the furnace chamber is communicated with the fan chamber through a return air hole, and the pressurizing chamber is communicated with the fan chamber through an air inlet hole;
and a fan and a temperature sensing device are arranged in the fan cavity.
2. The heater according to claim 1, wherein the temperature sensing device is disposed on a side of the fan chamber adjacent to the return air hole.
3. The heating furnace according to claim 1, wherein the pressurizing chambers are two groups which are arranged at the outer side of the furnace body in an aligned manner, and the air inlet holes are respectively arranged between the two groups of pressurizing chambers and the fan chamber.
4. The heating furnace according to any one of claims 1 to 3, wherein an end of the pressurizing chamber remote from the air inlet hole is provided with an inclined guide plate, and a surface of the guide plate facing a side of the jet flow plate forms a guide surface;
and the air flow entering the end, far away from the air inlet hole, of the pressurization cavity is reflected towards the jet plate through the guide surface.
5. The heating furnace according to claim 4, wherein an angle between the guide plate and the jet plate is adjustable.
6. The heating furnace according to any one of claims 1 to 3, wherein a heater is provided in the blower chamber, and an air flow heated by the heater is introduced into the pressurizing chamber through the air inlet hole.
7. The heating furnace according to any one of claims 1 to 3, wherein a guide portion is provided on a side surface of the jet plate facing the furnace chamber;
the guide part corresponds to the position of the jet hole, and the airflow output by the jet hole is input into the furnace cavity through the guide part.
8. The heating furnace according to claim 7, wherein the guide portion is provided in its middle with a guide hole coaxial with the jet hole.
9. The heating furnace according to claim 8, wherein the jet hole and the guide hole form a jet passage, and an inner diameter of the jet passage is gradually reduced from the jet hole toward the guide hole.
10. The heating furnace according to claim 8, wherein the guide hole of the guide portion located at the central portion of the jet plate is opened toward the central portion of the jet plate;
the guide hole of the guide part positioned at the edge of the jet flow plate is opened towards the inner wall of the furnace chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911305358.4A CN110974047A (en) | 2019-12-16 | 2019-12-16 | Heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911305358.4A CN110974047A (en) | 2019-12-16 | 2019-12-16 | Heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110974047A true CN110974047A (en) | 2020-04-10 |
Family
ID=70095007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911305358.4A Pending CN110974047A (en) | 2019-12-16 | 2019-12-16 | Heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110974047A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301477A (en) * | 1998-04-02 | 2001-06-27 | 透波歇夫技术股份有限公司 | Residential oven with convectional and microwave heating |
| EP0696710B1 (en) * | 1993-10-14 | 2002-01-23 | Fujimak Corporation | High speed oven |
| KR20090099814A (en) * | 2008-03-18 | 2009-09-23 | 주식회사 대우일렉트로닉스 | Multi-function microwave oven |
| KR20110058140A (en) * | 2009-11-25 | 2011-06-01 | 주식회사 대우일렉트로닉스 | Convection type microwave oven |
| CN106073527A (en) * | 2016-08-31 | 2016-11-09 | 安庆三维电器有限公司 | A kind of heated air circulation type electric baker peculiar to vessel |
| CN107397452A (en) * | 2017-08-23 | 2017-11-28 | 广东美的厨房电器制造有限公司 | Cooking apparatus |
| CN109288406A (en) * | 2018-11-30 | 2019-02-01 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN109619999A (en) * | 2018-11-30 | 2019-04-16 | 广东美的厨房电器制造有限公司 | Microwave oven |
-
2019
- 2019-12-16 CN CN201911305358.4A patent/CN110974047A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0696710B1 (en) * | 1993-10-14 | 2002-01-23 | Fujimak Corporation | High speed oven |
| CN1301477A (en) * | 1998-04-02 | 2001-06-27 | 透波歇夫技术股份有限公司 | Residential oven with convectional and microwave heating |
| KR20090099814A (en) * | 2008-03-18 | 2009-09-23 | 주식회사 대우일렉트로닉스 | Multi-function microwave oven |
| KR20110058140A (en) * | 2009-11-25 | 2011-06-01 | 주식회사 대우일렉트로닉스 | Convection type microwave oven |
| CN106073527A (en) * | 2016-08-31 | 2016-11-09 | 安庆三维电器有限公司 | A kind of heated air circulation type electric baker peculiar to vessel |
| CN107397452A (en) * | 2017-08-23 | 2017-11-28 | 广东美的厨房电器制造有限公司 | Cooking apparatus |
| CN109288406A (en) * | 2018-11-30 | 2019-02-01 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN109619999A (en) * | 2018-11-30 | 2019-04-16 | 广东美的厨房电器制造有限公司 | Microwave oven |
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Application publication date: 20200410 |