WO2022151692A1 - 微波蒸烤箱 - Google Patents

微波蒸烤箱 Download PDF

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Publication number
WO2022151692A1
WO2022151692A1 PCT/CN2021/107767 CN2021107767W WO2022151692A1 WO 2022151692 A1 WO2022151692 A1 WO 2022151692A1 CN 2021107767 W CN2021107767 W CN 2021107767W WO 2022151692 A1 WO2022151692 A1 WO 2022151692A1
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WO
WIPO (PCT)
Prior art keywords
hot air
cooking cavity
microwave
microwave oven
steam
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Application number
PCT/CN2021/107767
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English (en)
French (fr)
Inventor
刘钦
吴永强
任国栋
刘骏
贺聪
Original Assignee
运鼎科技（北京）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN202120116973.7U external-priority patent/CN216147855U/zh
Priority claimed from CN202110053515.8A external-priority patent/CN112754314A/zh
Application filed by 运鼎科技（北京）有限公司 filed Critical 运鼎科技（北京）有限公司
Publication of WO2022151692A1 publication Critical patent/WO2022151692A1/zh

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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
    • A47J27/00—Cooking-vessels
    • A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
    • 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
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/24—Warming devices
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings

Definitions

  • the present invention generally relates to the technical field of kitchen electrical equipment, in particular to a microwave oven.
  • microwave ovens are usually provided with temperature sensors or temperature probes.
  • the temperature sensor or temperature probe in the prior art has no shielding cover or the packaging and shielding are not completely tight, especially microwaves of different frequencies will pass through the joint between the metal shell and the shielding wire, and the AD sampling results of the temperature sensor will be collected. cause greater impact. Therefore, the temperature value sensed by the temperature sensor or temperature probe in the prior art is easily disturbed by the microwaves entering it, and irregular jumps occur when the microwave oven works, which seriously affects the accuracy of temperature measurement.
  • the embodiment of the present invention solves the problem that the temperature value measured by the temperature sensor in the prior art is interfered by microwaves by adding a shielding cover with a special structure to the outside of the temperature sensor.
  • the present invention proposes a microwave oven, comprising:
  • the hollow part inside the box body forms a cooking cavity
  • a microwave generating part configured to generate microwaves and conduct the microwaves into the cooking cavity to heat the food to be heated
  • a heating device and a hot air fan configured to form hot air with the heat generated by the heating device and send it into the cooking cavity
  • a temperature sensor configured to sense the temperature of the hot air
  • a sensor microwave shielding cover the sensor microwave shielding cover includes a cover body, wherein the cover body includes a plurality of holes, the holes are configured to shield microwaves from entering the sensor through the microwave shielding cover, and the cover body is
  • the columnar structure has a non-planar structure on the side facing the hot air, wherein along the hot air direction, the cross-sectional area of the non-planar structure in a plane perpendicular to the hot air direction gradually increases.
  • the side of the cover body facing the hot air is arranged so that the water droplets attached to the cover body can flow along the direction of the hot air.
  • the cover body has a cylindrical structure, a semi-circular arc structure or a conical structure.
  • the aperture of the hole on the cover body is set to be smaller than a quarter of the microwave wavelength.
  • the microwave oven further comprises an air duct located above the cooking cavity, wherein the hot air is dispersed to the cooking along the air duct intracavity.
  • the temperature sensor is arranged in the air duct on a side away from the heating device and the hot air fan.
  • the sensor microwave shielding cover further comprises a base connected with the cover body, and the base is mounted on the side wall of the box body.
  • a steam generator configured to blow the steam generated and released by the steam generator into the cooking cavity.
  • a circulation fan is further included, the circulation fan being configured to increase the air flow in the cooking cavity, so that the hot air and/or the steam are evenly distributed in the cooking cavity.
  • an end of the air duct away from the heating device is gradually narrowed.
  • the heating device is a carbon heating tube
  • the circulating fan is a turbo fan
  • the steam generator is a steam boiler.
  • it further includes a controller, which is respectively coupled to the microwave generating part, the heating device, the steam generator and the temperature sensor, and is configured to control the microwave generating part to generate microwaves, and monitor the The humidity in the cooking cavity, the steam generator is controlled to generate steam and the heating temperature of the heating device is controlled according to the temperature of the hot air sensed by the temperature sensor and the humidity.
  • a controller which is respectively coupled to the microwave generating part, the heating device, the steam generator and the temperature sensor, and is configured to control the microwave generating part to generate microwaves, and monitor the The humidity in the cooking cavity, the steam generator is controlled to generate steam and the heating temperature of the heating device is controlled according to the temperature of the hot air sensed by the temperature sensor and the humidity.
  • the present invention further includes a hot air orifice plate, the hot air orifice plate is arranged at the junction of the air duct and the cooking cavity, and is provided with a plurality of small holes, the hot air passes through the hot air holes Plates are dispersed into the cooking cavity.
  • it further comprises a steam orifice plate, which is arranged under the side wall or the bottom of the cooking cavity, and is provided with a plurality of small holes, and the steam is passed through the steam orifice plate. into the cooking cavity.
  • a steam orifice plate which is arranged under the side wall or the bottom of the cooking cavity, and is provided with a plurality of small holes, and the steam is passed through the steam orifice plate. into the cooking cavity.
  • a plurality of steam ports are provided under the rear portion or on the side wall of the cooking cavity, and the steam is dispersed into the cooking cavity through the plurality of steam ports.
  • the partition wall is provided with a plurality of circulation holes, wherein the circulation fan is configured so that the cooking cavity The gas in the gas leaves the cooking cavity through a part of the circulation holes, and re-enters the cooking cavity through the other part of the circulation holes.
  • a shielding cover is added outside the temperature sensor or temperature probe, and the shielding cover is arranged to have a non-planar structure with a cross-sectional area in a plane perpendicular to the hot wind direction gradually increasing in the direction of the hot wind, so as to solve the problem of solving the problem.
  • the problem of inaccurate measurement results caused by the entry of microwaves due to the imprecise packaging and shielding of the temperature sensor or temperature probe in the prior art is solved, and the measurement accuracy of the temperature sensor is improved.
  • the temperature sensor shield of the present invention has the outstanding features of simple structure and easy fabrication and installation.
  • FIG. 1 shows a schematic diagram of a sensor microwave shielding cover according to an embodiment of the present invention
  • FIG. 2A, FIG. 2B, and FIG. 2C respectively show schematic diagrams of in-plane cross-sections of the non-planar structure in the sensor microwave shielding cover facing the direction of hot air according to an embodiment of the present invention
  • Figure 3 shows a side view of the internal structure of a microwave oven according to an embodiment of the present invention.
  • FIG. 4 shows a side view of the internal structure of a microwave oven according to another embodiment of the present invention.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection: it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection: it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • a first feature "on” or “under” a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes that the first feature is directly above and diagonally above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature “below”, “below” and “beneath” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature has a lower level than the second feature.
  • FIG. 1 shows a schematic diagram of a sensor microwave shield according to an embodiment of the present invention.
  • the sensor microwave shielding cover 10 includes a cover body 11 , wherein the cover body 11 includes a plurality of holes 12 , and the holes 12 are configured to shield microwaves from entering the sensor through the microwave shielding cover 10 , But it can allow hot air to pass through.
  • the cover body 11 is a columnar structure, and has a non-planar structure 13 on the side facing the hot air, wherein the cross-sectional area of the non-planar structure 13 in a plane perpendicular to the hot air direction gradually increases along the hot air direction. increase (refer to Figures 2A, 2B, and 2C below).
  • the sensor microwave shielding cover 10 also includes a base 14 connected to the cover body 11, the base 14 is installed on the inner wall of the microwave oven, and is used to cover the sensor microwave shielding cover 10 in the sensor such as temperature. outside the sensor, so as to shield the microwave transmitted from the microwave oven to the temperature sensor.
  • FIG. 2A , 2B and 2C respectively show schematic diagrams of in-plane cross-sections of a non-planar structure in a sensor microwave shielding cover facing the direction of hot air according to an embodiment of the present invention.
  • the cover body 11 has a cylindrical structure, a semi-circular arc structure or a conical structure, as shown in FIG. 2A , FIG. 2B , and FIG. 2C , the cover body 11 is parallel to the direction of the hot air.
  • the cross-sections of are semicircular, semicircular arc and triangular respectively from left to right.
  • the non-planar structure 13 is parallel to the direction of the hot air due to its semicircular, semicircular
  • the arc or angle of the arc or triangular section increases sequentially from right to left, so that the cross-sectional area of the non-planar structure 13 in the plane perpendicular to the hot air direction gradually increases.
  • the structure of the cover body 11 is not limited to the above-mentioned three specific non-planar structures 13 on the side facing the hot air.
  • the cover body 11 can understand that any The water droplets on the cover body 11 flow along the direction of the hot air instead of directly blowing into the cover body 11, and the structure of the cover body 11 that can use the hot air to destroy the water film tension on the windward surface of the shielding cover, all fall into the protection scope of the present invention.
  • the cover body 11 in order to make the cover body 11 not only can strictly shield the microwaves emitted from the microwave oven, but also allow hot air to pass through, so as to ensure that the real-time performance of the temperature collection by the temperature sensor 10 is not affected. Influence, the aperture of the hole 12 on the cover body 11 is set to be smaller than a quarter of the microwave wavelength. According to an embodiment of the present invention, the material of the cover body 11 is metal.
  • FIG. 3 shows a side view of the internal structure of a microwave oven according to an embodiment of the present invention.
  • the microwave oven 100 includes: a box body 110 , a microwave generating part 120 , a heating device 130 , a hot air fan 140 , a temperature sensor 150 and a sensor microwave shielding cover 10 .
  • the hollow part inside the box body 110 forms a cooking cavity 101 , and food is placed in the cooking cavity 101 to be heated and processed.
  • the microwave generating part 120 is optionally disposed on the top of the cooking cavity 101 and configured to generate microwaves and conduct the microwaves into the cooking cavity 101 to heat the food to be heated.
  • the heating device 130 and the hot air fan 140 are optionally disposed at the rear of the cooking cavity 101 , and are configured to generate the heat generated by the heating device 130 into hot air and send it into the cooking cavity 101 .
  • the temperature sensor 150 is configured to sense the temperature of the hot air.
  • the sensor microwave shielding cover 10 is disposed outside the temperature sensor 150, and is configured to shield the microwaves generated by the microwave oven 100 that interfere with the temperature sensor 150, so as to ensure the measurement accuracy and reliability of the temperature sensor 150.
  • the sensor microwave shielding cover 10 includes a cover body 11 , wherein the cover body 11 includes a plurality of holes 12 , and the holes 12 are configured to shield microwaves from passing through the cover body 11 .
  • the microwave shield 10 enters the sensor 10, but can allow hot air to pass through.
  • the cover body 11 is a columnar structure, and has a non-planar structure 13 on the side facing the hot air, wherein the cross-sectional area of the non-planar structure 13 in a plane perpendicular to the hot air direction gradually increases along the hot air direction. increase.
  • the specific structure of the microwave shielding cover 10 can be referred to FIG. 1 and the above description, which will not be repeated here.
  • the microwave oven 100 further includes an air duct 160 located above the cooking cavity 101 , wherein an end of the air duct 160 away from the heating device 130 gradually changes narrow.
  • the air duct 160 can be narrowed from an end close to the heating device 130 , or from any part in the middle of the air duct 160 along a direction away from the heating device 130 , so that the The hot air is dispersed into the cooking cavity 101 along the air duct 160 .
  • the hot air fan 140 is disposed at the rear of the heating device 130 . When the heating device 130 generates heat, the hot air fan 140 transfers the heat from the microwave oven 100 along the air duct 160 . The rear is passed forward and downward to fill the entire air duct 160 and the cooking cavity 101 .
  • FIG. 4 shows a side view of the internal structure of a microwave oven according to another embodiment of the present invention.
  • the vertical section of the air duct 160 is a trapezoid or a triangle.
  • the "slope" 161 formed by a hypotenuse with a trapezoidal or triangular cross-section is forced to force the The heat changes the original horizontal flow direction, and then flows to the lower part of the microwave oven 100 , that is, the cooking cavity 101 , and gradually fills the entire cooking cavity 101 .
  • the temperature sensor 150 is disposed in the air duct 160 on a side away from the heating device 130 and the hot air fan 140 to sense The temperature of the hot air blown by the heating device 130 and the hot air fan 140 .
  • the base 14 of the sensor microwave shielding cover 10 is installed in the air duct 160 and on the side wall of the box 110 , and the temperature The sensor 150 is tightly enclosed.
  • the non-planar structure 13 of the sensor microwave shield 10 is arranged to face the direction from which the hot air blows, so that the non-planar structure 13 faces the hot air, and the water droplets flow along the direction of the hot air so as not to let all the The water droplets hang on the non-planar structure 13 .
  • the microwave oven 100 further includes a steam generator 170, and the steam generator 170 is configured to blow the steam generated and released by the steam generator 170 to a inside the cooking cavity 101 .
  • the microwave oven 100 further includes a circulation fan 180, and the circulation fan 180 is configured to increase the air flow in the cooking cavity 101, so that the hot air and the /or the steam circulates in the cooking cavity 101 for uniform distribution.
  • the heating device 130 is a carbon heating tube
  • the circulating fan 180 is a turbo fan
  • the steam generator 170 is a steam boiler.
  • the turbo fan is set so that when the turbo fan rotates, the central area of the turbo fan is inhaled from the inside of the cooking cavity 101, and the air in the middle area of the cooking cavity 101 will be sucked into the turbo fan, and then from the inside of the cooking cavity 101.
  • the surrounding area of the turbo fan is blown out, and in this way, the inside of the cooking cavity 101 is circulated and ventilated, and finally the steam evenly fills the entire cooking cavity 101 .
  • the microwave oven 100 further includes a controller (not shown in the figure), the controller is respectively connected with the microwave generating part 120 , the heating device 130 , the steam generator 170 and the temperature sensor 150 is coupled and configured to control the microwave generating part 120 to generate microwaves, monitor the humidity in the cooking cavity 101, and control the steam generator according to the temperature of the hot air sensed by the temperature sensor 150 and the humidity 170 generates steam and controls the heating temperature of the heating device 130 .
  • the microwave oven 100 further includes a hot air orifice plate 162 , and the hot air orifice plate 162 is disposed between the air duct 160 and the cooking cavity 101 .
  • the junction is provided with a plurality of small holes, and the hot air is dispersed into the cooking cavity 101 through the hot air orifice plate 162 , so that the hot air evenly fills the cooking cavity 101 .
  • the microwave oven 100 further includes a steam orifice plate 171 .
  • the steam orifice plate 171 is disposed at the bottom of the cooking cavity 101 and is provided with a steam orifice plate 171 .
  • a plurality of small holes, the steam is dispersed into the cooking cavity 101 through the steam hole plate 171 .
  • the steam generated by the steam generator 170 can fill the cooking cavity 101 more evenly, and the bottom of the food can be better moistened, so that the fresh taste of the food can be preserved.
  • a plurality of steam ports 172 are provided under the rear of the cooking cavity 101 or on a side wall, and the steam passes through the plurality of steam ports 172 are dispersed into the cooking cavity 101 .
  • the functions of the plurality of steam ports 172 are similar to those of the steam orifice plate 171 , and details are not described herein again.
  • the microwave oven 100 further includes a partition wall 181 disposed between the circulation fan 180 and the cooking cavity 101 , the partition wall 181 A plurality of circulation holes 182 are provided thereon, wherein the circulation fan 180 is configured so that the gas in the cooking cavity 101 leaves the cooking cavity 101 through a part of the circulation holes, and re-enters the cooking cavity through another part of the circulation holes 101.
  • the gas inside the cooking cavity 101 is sucked into the circulation fan 180 through a part of the circulation holes distributed in the central area of the circulation fan 180 , and recirculated through another part of the circulation holes distributed in the surrounding area of the circulation fan 180 .
  • the steam generator 170 is located behind the circulation fan 180 , the present invention is not limited thereto, the steam generator 170 may also be located below the circulation fan 180 , and the steam passes through the steam orifice plate 181 through a separate pipeline. Or the steam port 182 is fed into the cooking cavity.
  • the heating device 130 and the hot air fan 140 are used to generate hot air
  • the steam generator 170 is used to generate steam and supply the steam to the cooking cavity. It can be turned on or off individually, so it can be flexibly applied to the heating of various types of food.
  • a microwave shielding cover with a special structure is arranged outside the temperature sensor or temperature probe, wherein the shielding cover has a non-planar surface with a gradually increasing cross-sectional area in a plane perpendicular to the hot wind direction facing the direction of the hot wind.
  • the structure solves the problem of inaccurate measurement results caused by the entry of microwaves due to the inaccurate packaging and shielding of the temperature sensor or temperature probe in the prior art, and improves the measurement accuracy, stability and real-time performance of the temperature sensor.
  • the temperature sensor shield of the present invention has the outstanding features of simple structure and easy fabrication and installation.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

一种微波蒸烤箱(100)，包括：箱体(110)，箱体(110)内部的中空部分形成烹饪腔(101)；微波生成部(120)，配置成可产生微波，并将微波传导至烹饪腔(101)内，对待加热食物进行加热；加热装置(130)和热风风扇(140)，配置成可将加热装置(130)产生的热量形成热风并送入烹饪腔(101)内；温度传感器(150)，配置成可感测热风的温度；传感器微波屏蔽罩(10)，包括罩体(11)，其中罩体(11)上包括多个孔眼(12)，孔眼(12)配置成可屏蔽微波通过该微波屏蔽罩(10)进入该传感器(150)，罩体(11)为柱状结构，且迎着热风的一侧上具有非平面的结构(13)，其中沿着热风方向，非平面的结构(13)在垂直于热风方向的平面内的截面面积逐渐增大。该微波蒸烤箱(100)能够使温度传感器(150)的封装和微波屏蔽更严密，测量更加准确。

Description

微波蒸烤箱 技术领域
本发明大致涉及厨房电器设备技术领域，尤其涉及一种微波蒸烤箱。
背景技术
在厨房电器设备领域中，微波蒸烤箱通常都设置有温度传感器或者温度探头。现有技术中的温度传感器或者温度探头，由于没有屏蔽罩或者封装和屏蔽并不完全严密，尤其是在金属外壳和屏蔽线接缝处会透过不同频率的微波，对温度传感器的AD采样结果造成较大影响。因此，现有技术中的温度传感器或者温度探头所感测到的温度值容易受到进入其中的微波的干扰，在微波蒸烤箱工作时出现无规则跳变，严重影响了温度测量的准确性。
背景技术部分的内容仅仅是发明人所知晓的技术，并不当然代表本领域的现有技术。
发明内容
本发明的实施例通过对温度传感器的外部增加具有特殊结构的屏蔽罩，解决了现有技术中所述温度传感器所测量的温度值受到微波干扰的问题。
有鉴于现有技术的至少一个缺陷，本发明提出一种微波蒸烤箱，包括：
箱体，所述箱体内部的中空部分形成烹饪腔；
微波生成部，配置成可产生微波，并将所述微波传导至所述烹饪腔内，对待加热食物进行加热；
加热装置和热风风扇，配置成可将所述加热装置产生的热量形成热风并送入所述烹饪腔内；
温度传感器，所述温度传感器配置成可感测所述热风的温度；和
传感器微波屏蔽罩，所述传感器微波屏蔽罩包括罩体，其中所述罩体上包括多个孔眼，所述孔眼配置成可屏蔽微波通过所述微波屏蔽罩进入所述传 感器，所述罩体为柱状结构，且迎着热风的一侧上具有非平面的结构，其中沿着热风方向，所述非平面的结构在垂直于所述热风方向的平面内的截面面积逐渐增大。
根据本发明的一个方面，其中所述罩体迎着热风的一侧设置为可使附着在所述罩体上的水滴顺着所述热风方向流动。
根据本发明的一个方面，其中所述罩体具有圆柱体结构、半圆弧形结构或者锥形结构。
根据本发明的一个方面，其中所述罩体上孔眼的孔径设置为小于四分之一微波波长。
根据本发明的一个方面，其中所述罩体的材料为金属，所述微波蒸烤箱还包括位于所述烹饪腔上方的风道，其中所述热风沿着所述风道被分散到所述烹饪腔内。
根据本发明的一个方面，其中所述温度传感器设置在所述风道内、远离所述加热装置和热风风扇的一侧。
根据本发明的一个方面，其中所述传感器微波屏蔽罩还包括与所述罩体连接的底座，所述底座安装在所述箱体的侧壁上。
根据本发明的一个方面，还包括蒸汽发生器，所述蒸汽发生器配置成可将所述蒸汽发生器产生并释放的蒸汽吹到所述烹饪腔内。
根据本发明的一个方面，还包括循环风扇，所述循环风扇配置成可增加烹饪腔中的空气流动，使所述热风和/或所述蒸汽在所述烹饪腔中均匀分布。
根据本发明的一个方面，其中所述风道远离所述加热装置的一端逐渐变窄。
根据本发明的一个方面，其中所述加热装置为碳加热管，所述循环风扇为涡轮风扇，所述蒸汽发生器为蒸汽锅炉。
根据本发明的一个方面，还包括控制器，所述控制器分别与所述微波生成部、加热装置、蒸汽发生器和温度传感器耦接，配置成可控制所述微波生成部产生微波，并监控所述烹饪腔内的湿度，根据所述温度传感器感测的热 风的温度和所述湿度控制所述蒸汽发生器产生蒸汽以及控制所述加热装置的加热温度。
根据本发明的一个方面，还包括热风孔板，所述热风孔板设置在所述风道与所述烹饪腔的交界处，其上设置有多个小孔，所述热风通过所述热风孔板被分散到所述烹饪腔内。
根据本发明的一个方面，还包括蒸汽孔板，所述蒸汽孔板设置在所述烹饪腔的侧壁下方或底部，其上设置有多个小孔，所述蒸汽通过所述蒸汽孔板被分散到所述烹饪腔内。
根据本发明的一个方面，其中所述烹饪腔的后部下方或侧壁上设置有多个蒸汽口，所述蒸汽通过所述多个蒸汽口被分散到所述烹饪腔内。
根据本发明的一个方面，还包括设置在所述循环风扇与所述烹饪腔之间的分隔壁，所述分隔壁上设置有多个循环孔，其中所述循环风扇配置成使得所述烹饪腔中的气体通过其中一部分循环孔离开所述烹饪腔，并通过另一部分循环孔重新进入所述烹饪腔。
本发明的实施例通过在温度传感器或者温度探头外增加屏蔽罩，且设置所述屏蔽罩迎着热风的方向具有在垂直于热风方向的平面内的截面面积逐渐增大的非平面的结构，解决了现有技术中的温度传感器或者温度探头由于封装和屏蔽不严密导致微波进入而造成的测量结果不准确的问题，提高了温度传感器的测量准确性。且本发明的温度传感器屏蔽罩具有结构简单和制作安装容易的突出特点。
附图说明
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：
图1示出了根据本发明一个实施例的传感器微波屏蔽罩的示意图；
图2A、图2B、图2C分别示出了根据本发明一个实施例的传感器微波屏蔽罩中非平面的结构迎着热风方向的平面内的截面的示意图；
图3示出了根据本发明一个实施例的微波蒸烤箱的内部结构的侧视图；和
图4示出了根据本发明另一个实施例的微波蒸烤箱的内部结构的侧视图。
具体实施方式
在下文中，仅简单地描述了某些示例性实施例。正如本领域技术人员可认识到的那样，在不脱离本发明的精神或范围的情况下，可通过各种不同方式修改所描述的实施例。因此，附图和描述被认为本质上是示例性的而非限制性的。
在本发明的描述中，需要理解的是，术语"中心"、"纵向"、"横向"、"长度"、"宽度"、"厚度"、"上"、"下"、"前"、"后"、"左"、"右"、"竖直"、"水平"、"顶"、"底"、"内"、"外"、"顺时针"、"逆时针"等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语"第一"、"第二"仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有"第一"、"第二"的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，"多个"的含义是两个或两个以上，除非另有明确具体的限定。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语"安装"、"相连"、"连接"应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接:可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之"上" 或之"下"可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征"之上"、"上方"和"上面"包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征"之下"、"下方"和"下面"包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
以下结合附图对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
图1示出了根据本发明一个实施例的传感器微波屏蔽罩的示意图。如图1所示，所述传感器微波屏蔽罩10包括罩体11，其中所述罩体11上包括多个孔眼12，所述孔眼12配置成可屏蔽微波通过所述微波屏蔽罩10进入传感器，但可以允许热风透过。所述罩体11为柱状结构，且迎着热风的一侧上具有非平面的结构13，其中所述非平面的结构13在垂直于所述热风方向的平面内的截面面积沿着热风方向逐渐增大(参照下图2A、图2B、图2C)。所述传感器微波屏蔽罩10还包括与所述罩体11连接的底座14，所述底座14安装在微波蒸烤箱的内壁上，用于将所述传感器微波屏蔽罩10罩在所述传感器如温度传感器外，以屏蔽从所述微波蒸烤箱透向所述温度传感器的微波。
图2A、图2B、图2C分别示出了根据本发明一个实施例的传感器微波屏蔽罩中非平面的结构迎着热风方向的平面内的截面的示意图。根据本发明的一个实施例，所述罩体11具有圆柱体结构、半圆弧形结构或者锥形结构，如 图2A、图2B、图2C所示，所述罩体11在与所热风方向平行的截面从左到右对应地分别为半圆形、半圆弧形和三角形。结合图1和图2A、图2B、图2C所示，沿着热风方向(即图中从右到左的方向)，所述非平面的结构13由于其平行于热风方向的半圆形、半圆弧形或三角形截面从右到左的弧度或角度依次增大，使所述非平面的结构13在垂直于所述热风方向的平面内的截面面积逐渐增大。当所述热风由图中从右到左吹向所述罩体11时，附着在所述罩体11上的水滴将随着热风方向，沿着所述半圆形、半圆弧形或三角形截面的弧度或角度从右到左流动，而不是被直接吹进所述罩体11内，进而影响所述温度传感器10的测量准确性。
根据本发明的一个实施例，所述罩体11的结构并不局限于其迎着热风的一侧具有上述三种具体的非平面的结构13，本领域的技术人员能够理解，任何能使附着在所述罩体11上的水滴顺着所述热风方向流动而不是直接吹进所述罩体11内、且能利用热风破坏屏蔽罩迎风面水膜张力的罩体11的结构，这些都落入本发明的保护范围。
根据本发明的一个实施例，为了使所述罩体11既可以严密地屏蔽从微波蒸烤箱中发射的微波，又可以使热风透过、保证所述温度传感器10的温度采集的实时性不受影响，所述罩体11上孔眼12的孔径设置为小于四分之一微波波长。根据本发明的一个实施例，所述罩体11的材料为金属。
图3示出了根据本发明一个实施例的微波蒸烤箱的内部结构的侧视图。如图3所示，所述微波蒸烤箱100包括：箱体110、微波生成部120、加热装置130和热风风扇140、温度传感器150以及传感器微波屏蔽罩10。所述箱体110内部的中空部分形成烹饪腔101，食物置于所述烹饪腔101中被加热、处理。所述微波生成部120可选地设置在所述烹饪腔101的顶部，配置成可产生微波，并将所述微波传导至所述烹饪腔101内，对待加热食物进行加热。所述加热装置130和热风风扇140可选地设置在所述烹饪腔101的后部，配置成可将所述加热装置130产生的热量形成热风并送入所述烹饪腔101内。所述温度传感器150配置成可感测所述热风的温度。所述传感器微波屏蔽罩 10设置在所述温度传感器150的外侧，配置成可屏蔽由所述微波蒸烤箱100产生干扰所述温度传感器150的微波，以确保所述温度传感器150的测量准确性和稳定性。参照图1和图2A、2B、2C所示，所述传感器微波屏蔽罩10包括罩体11，其中所述罩体11上包括多个孔眼12，所述孔眼12配置成可屏蔽微波通过所述微波屏蔽罩10进入所述传感器10，但可以允许热风透过。所述罩体11为柱状结构，且迎着热风的一侧上具有非平面的结构13，其中所述非平面的结构13在垂直于所述热风方向的平面内的截面面积沿着热风方向逐渐增大。关于所述微波屏蔽罩10的具体结构参见图1以及上述说明，这里不再赘述。
根据本发明的一个实施例，如图3所示，所述微波蒸烤箱100还包括位于所述烹饪腔101上方的风道160，其中所述风道160远离所述加热装置130的一端逐渐变窄。可选地，所述风道160可从靠近所述加热装置130的一端开始变窄，或者从所述风道160的中间任何部位沿着远离所述加热装置130的方向开始变窄，以使所述热风沿着所述风道160被分散到所述烹饪腔101内。所述热风风扇140设置在所述加热装置130的后部，当所述加热装置130产生热量时，所述热风风扇140将所述热量沿着所述风道160从所述微波蒸烤箱100的后部向前以及向下传递，以充满整个风道160和所述烹饪腔101。
图4示出了根据本发明另一个实施例的微波蒸烤箱的内部结构的侧视图。如图3和图4所示，根据本发明的一个优选实施例，所述风道160的竖直截面为梯形或三角形。当所述热量沿着所述风道160从所述微波蒸烤箱100的后部向前传递时，由于碰到所述截面为梯形或三角形的一条斜边构成的“斜坡”161，迫使所述热量改变原本水平的流动方向，转而流向所述微波蒸烤箱100的下部即所述烹饪腔101内，并逐渐充满整个烹饪腔101。
根据本发明的一个实施例，如图3所示，所述温度传感器150设置在所述风道160内、远离所述加热装置130和所述热风风扇140的一侧，以感测从所述加热装置130和所述热风风扇140吹出的热风的温度。
根据本发明的一个实施例，如图1和图3所示，所述传感器微波屏蔽罩 10的底座14安装在所述风道160内、所述箱体110的侧壁上，将所述温度传感器150严密地罩住。其中所述传感器微波屏蔽罩10的非平面的结构13布置为朝向所述热风吹来的方向，使所述非平面的结构13迎着热风，所述水滴沿着热风方向流动而不至于让所述水滴挂在所述非平面的结构13上。
根据本发明的一个实施例，如图3所示，所述微波蒸烤箱100还包括蒸汽发生器170，所述蒸汽发生器170配置成可将所述蒸汽发生器170产生并释放的蒸汽吹到所述烹饪腔101内。
根据本发明的一个实施例，如图3所示，所述微波蒸烤箱100还包括循环风扇180，所述循环风扇180配置成可增加所述烹饪腔101中的空气流动，使所述热风和/或所述蒸汽在所述烹饪腔101中循环流动，以均匀分布。
根据本发明的一个实施例，如图3所示，其中所述加热装置130为碳加热管，所述循环风扇180为涡轮风扇，所述蒸汽发生器170为蒸汽锅炉。具体地，所述涡轮风扇设置为当所述涡轮风扇转动时，其中心区域从所述烹饪腔101的内部吸气，烹饪腔101中间区域的空气会被吸入到所述涡轮风扇中，随后从所述涡轮风扇的四周区域吹出，如此反复交替，在所述烹饪腔101的内部实现循环换气，最终使所述蒸汽均匀地充满整个烹饪腔101。
根据本发明的一个实施例，所述微波蒸烤箱100还包括控制器(图中未示出)，所述控制器分别与所述微波生成部120、加热装置130、蒸汽发生器170和温度传感器150耦接，配置成可控制所述微波生成部120产生微波，并监控所述烹饪腔101内的湿度，根据所述温度传感器150感测的热风的温度和所述湿度控制所述蒸汽发生器170产生蒸汽以及控制所述加热装置130的加热温度。
根据本发明的一个实施例，如图3和图4所示，所述微波蒸烤箱100还包括热风孔板162，所述热风孔板162设置在所述风道160与所述烹饪腔101的交界处，其上设置有多个小孔，所述热风通过所述热风孔板162被分散到所述烹饪腔101内，使所述热风均匀地充满所述烹饪腔101。
根据本发明的一个实施例，如图3和图4所示，所述微波蒸烤箱100还 包括蒸汽孔板171，所述蒸汽孔板171设置在所述烹饪腔101的底部，其上设置有多个小孔，所述蒸汽通过所述蒸汽孔板171被分散到所述烹饪腔101内。通过所述蒸汽孔板171，可以使所述蒸汽发生器170产生的蒸汽更加均匀地充满所述烹饪腔101，且较好地湿润所述食物的底部，保留食物的新鲜口感。
根据本发明的一个实施例，如图3和图4所示，其中所述烹饪腔101的后部下方或侧壁上设置有多个蒸汽口172，所述蒸汽通过所述多个蒸汽口172被分散到所述烹饪腔101内。所述多个蒸汽口172的作用与所述蒸汽孔板171的作用相似，在此不再赘述。
根据本发明的一个实施例，如图3和图4所示，所述微波蒸烤箱100还包括设置在所述循环风扇180与所述烹饪腔101之间的分隔壁181，所述分隔壁181上设置有多个循环孔182，其中所述循环风扇180配置成使得所述烹饪腔101中的气体通过其中一部分循环孔离开所述烹饪腔101，并通过另一部分循环孔重新进入所述烹饪腔101。其中通过分布在所述循环风扇180的中心区域的一部分循环孔将所述烹饪腔101内部的气体吸入所述循环风扇180内，通过分布在所述循环风扇180的四周区域的另一部分循环孔再将所述气体释放至所述烹饪腔101内部，以此实现所述烹饪腔101内部的多次交替热循环，使所述气体充分混合，并均匀分布在所述烹饪腔101中。在图3的实施例中，蒸汽发生器170位于循环风扇180的后方，本发明并不限于此，蒸汽发生器170也可以位于循环风扇180的下方，蒸汽通过单独的管路经由蒸汽孔板181或蒸汽口182被送入烹饪腔中。
另外，本发明的实施例中，加热装置130和热风风扇140用于产生热风，蒸汽发生器170用于产生蒸汽并向烹饪腔供送蒸汽，二者是单独的装置，可以分别进行控制，即可以单独地开启或者关闭，因而可以灵活适用于各种类型食物的加热。
本发明的实施例通过将温度传感器或者温度探头外部设置具有特殊结构的微波屏蔽罩，其中所述屏蔽罩迎着热风的方向具有在垂直于热风方向的平 面内的截面面积逐渐增大的非平面的结构，解决了现有技术中的温度传感器或者温度探头由于封装和屏蔽不严密导致微波进入而造成的测量结果不准确的问题，提高了温度传感器的测量准确性、稳定性和实时性。且本发明的温度传感器屏蔽罩具有结构简单和制作安装容易的突出特点。
最后应说明的是：以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (16)

  1. 一种微波蒸烤箱，包括：
    箱体，所述箱体内部的中空部分形成烹饪腔；
    微波生成部，配置成可产生微波，并将所述微波传导至所述烹饪腔内，对待加热食物进行加热；
    加热装置和热风风扇，配置成可将所述加热装置产生的热量形成热风并送入所述烹饪腔内；
    温度传感器，所述温度传感器配置成可感测所述热风的温度；和
    传感器微波屏蔽罩，所述传感器微波屏蔽罩包括罩体，其中所述罩体上包括多个孔眼，所述孔眼配置成可屏蔽微波通过所述微波屏蔽罩进入所述传感器，所述罩体为柱状结构，且迎着热风的一侧上具有非平面的结构，其中所述非平面的结构在垂直于所述热风方向的平面内的截面面积沿着热风方向逐渐增大。
  2. 如权利要求1所述的微波蒸烤箱，其中所述罩体迎着热风的一侧设置为可使附着在所述罩体上的水滴顺着所述热风方向流动。
  3. 如权利要求1或2所述的微波蒸烤箱，其中所述罩体具有圆柱体结构、半圆弧形结构或者锥形结构。
  4. 如权利要求1或2所述的微波蒸烤箱，其中所述罩体上孔眼的孔径设置为小于四分之一微波波长。
  5. 如权利要求1或2所述的微波蒸烤箱，其中所述罩体的材料为金属，所述微波蒸烤箱还包括位于所述烹饪腔上方的风道，其中所述热风沿着所述风道被分散到所述烹饪腔内。
  6. 如权利要求5所述的微波蒸烤箱，其中所述温度传感器设置在所述风道内、远离所述加热装置和热风风扇的一侧。
  7. 如权利要求6所述的微波蒸烤箱，其中所述传感器微波屏蔽罩还包括与所述罩体连接的底座，所述底座安装在所述箱体的侧壁上。
  8. 如权利要求1或2所述的微波蒸烤箱，还包括蒸汽发生器，所述蒸汽发生器配置成可将所述蒸汽发生器产生并释放的蒸汽吹到所述烹饪腔内。
  9. 如权利要求8所述的微波蒸烤箱，还包括循环风扇，所述循环风扇配置成可增加烹饪腔中的空气流动，使所述热风和/或所述蒸汽在所述烹饪腔中均匀分布。
  10. 如权利要求5所述的微波蒸烤箱，其中所述风道远离所述加热装置的一端逐渐变窄。
  11. 如权利要求9所述的微波蒸烤箱，其中所述加热装置为碳加热管，所述循环风扇为涡轮风扇，所述蒸汽发生器为蒸汽锅炉。
  12. 如权利要求11所述的微波蒸烤箱，还包括控制器，所述控制器分别与所述微波生成部、加热装置、蒸汽发生器和温度传感器耦接，配置成可控制所述微波生成部产生微波，并监控所述烹饪腔内的湿度，根据所述温度传感器感测的热风的温度和所述湿度控制所述蒸汽发生器产生蒸汽以及控制所述加热装置的加热温度。
  13. 如权利要求5所述的微波蒸烤箱，还包括热风孔板，所述热风孔板设置在所述风道与所述烹饪腔的交界处，其上设置有多个小孔，所述热风通过所述热风孔板被分散到所述烹饪腔内。
  14. 如权利要求1或2所述的微波蒸烤箱，还包括蒸汽孔板，所述蒸汽孔板设置在所述烹饪腔的侧壁下方或底部，其上设置有多个小孔，所述蒸汽通过所述蒸汽孔板被分散到所述烹饪腔内。
  15. 如权利要求1或2所述的微波蒸烤箱，其中所述烹饪腔的后部下方或侧壁上设置有多个蒸汽口，所述蒸汽通过所述多个蒸汽口被分散到所述烹饪腔内。
  16. 如权利要求9所述的微波蒸烤箱，还包括设置在所述循环风扇与所述烹饪腔之间的分隔壁，所述分隔壁上设置有多个循环孔，其中所述循环风扇配置成使得所述烹饪腔中的气体通过其中一部分循环孔离开所述烹饪腔，并通过另一部分循环孔重新进入所述烹饪腔。
PCT/CN2021/107767 2021-01-15 2021-07-22 微波蒸烤箱 WO2022151692A1 (zh)

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