WO2022151694A1 - 微波屏蔽门及包括其的微波蒸烤箱 - Google Patents
微波屏蔽门及包括其的微波蒸烤箱 Download PDFInfo
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- WO2022151694A1 WO2022151694A1 PCT/CN2021/107769 CN2021107769W WO2022151694A1 WO 2022151694 A1 WO2022151694 A1 WO 2022151694A1 CN 2021107769 W CN2021107769 W CN 2021107769W WO 2022151694 A1 WO2022151694 A1 WO 2022151694A1
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- door
- microwave
- shielding
- cooking cavity
- shielding plate
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- 238000010411 cooking Methods 0.000 claims abstract description 88
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims description 41
- 238000005192 partition Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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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
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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
- A47J36/00—Parts, details or accessories of cooking-vessels
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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
Definitions
- the present invention generally relates to the technical field of kitchen electrical equipment, in particular to a microwave shielding door and a microwave oven including the same.
- Microwave devices such as microwave ovens or microwave ovens heat food by generating microwaves during operation. Before heating, the door of the microwave oven or microwave oven is opened, and the food to be heated is put into the box in the microwave oven or microwave oven. , and then close the door to microwave the food to be heated. Since the door and the box are not fixedly connected, it is inevitable that microwaves will leak out through the door during the heating process. Microwave leakage is one of the problems in microwave equipment. If the microwave leakage exceeds the standard, it will interfere with electrical signals, damage electronic components, and cause equipment failure; if it is serious, it will cause harm to the human body. The national standard requires microwave leakage ⁇ 5mW/cm2 (microwave frequency 2450MHz) at a distance of 5cm from the equipment.
- the embodiment of the present invention solves the problem of microwave leakage in microwave equipment in the prior art by adopting a microwave shielding door structure with double shielding of the first shielding plate, the second shielding plate and the sealing ring.
- the present invention proposes a microwave shielding door, comprising:
- first shielding plate the region of the first shielding plate facing the microwave cooking cavity cavity forms a first shielding region
- the first shielding plate is connected to the first surface of the second shielding plate, and the area of the second shielding plate is larger than that of the first shielding plate;
- a sealing ring is spaced apart from the first shielding plate, and a second shielding area is formed in the area of the second shielding plate inside the sealing ring facing the microwave cooking cavity.
- the sealing ring is fixed around the second shielding plate.
- the sealing ring is provided on the second shielding plate.
- the door body is provided with a groove, the groove surrounds the second shielding plate, and the sealing ring is fixed in the groove.
- a connecting piece is further included, and the first surface of the first shielding plate and the first surface of the second shielding plate are connected by the connecting piece.
- the door body includes a door outer panel and a door inner panel that are fixedly connected, and the second surface of the second shielding panel is mounted on the door inner panel.
- the present invention further includes a door handle and a door handle fixing box, the upper sides of the door outer panel and the door inner panel are provided with a hole groove, and the door handle is fixed to the box through the hole groove and the door handle Installed on the outside of the door outer panel.
- the periphery of the first shielding plate includes a bent portion facing the second shielding plate, and a choke groove structure is provided on the bent portion.
- the present invention also relates to 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 the heat generated by the heating device into hot air and send it into the cooking cavity
- a steam generator configured to blow steam generated and released by the steam generator into the cooking cavity
- a circulation fan configured to distribute the hot air and/or the steam evenly in the cooking cavity
- microwave shielding door according to any one of the above, wherein the microwave shielding door is disposed at the front of the box body, and is configured to shield the microwaves leaking from the cooking cavity to the outside of the microwave oven during operation.
- it further includes a door connecting portion, holes and grooves for accommodating the door connecting portion are provided on both sides of the lower portion of the door body in the microwave shielding door, and the microwave shielding door can pass through the door connecting portion. On and off.
- it further includes an air duct located above the cooking cavity, wherein the hot air blown by the heating device and the hot air fan is dispersed into the cooking cavity along the air duct.
- an end of the air duct away from the heating device is gradually narrowed, the heating device is a carbon heating device, the circulating fan is a turbo fan, and the steam generator is a steam boiler.
- the present invention further includes a temperature sensor, the temperature sensor is disposed in the air duct on a side away from the heating device and the hot air fan, and is configured to sense the hot air blown by the heating device and the hot air fan temperature.
- 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 and a steam 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 orifice plate is dispersed into the cooking cavity, the steam orifice plate 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 passes through the steam orifice plate dispersed into the cooking cavity.
- a plurality of steam ports are provided under the rear of the cooking cavity or on a side wall, the steam is dispersed into the cooking cavity through the plurality of steam ports, and the microwave steams
- the oven further includes a partition wall disposed between the circulation fan and the cooking cavity, the partition wall is provided with a plurality of circulation holes, wherein the circulation fan is configured to allow gas in the cooking cavity to pass through a portion thereof The circulation hole leaves the cooking cavity and re-enters the cooking cavity through another portion of the circulation hole.
- the microwave shielding door is provided with a first shielding plate, a second shielding plate and a sealing ring, and the positional relationship between the sealing ring and the first shielding plate and the second shielding plate, so as to prevent leakage from the microwave oven.
- the microwave is double shielded, which improves the sealing performance and microwave shielding performance of the microwave shielding door, and effectively avoids the leakage of microwaves to the outside.
- FIG. 1 shows a schematic diagram of a microwave shielding door according to an embodiment of the present invention
- FIG. 2 shows an exploded view of a microwave shielding door 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 direct contact between the first and second features, 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 microwave shielding door according to an embodiment of the present invention.
- FIG. 2 shows an exploded view of a microwave shielding door according to an embodiment of the present invention.
- the microwave shielding door 10 includes: a first shielding plate 11, a second shielding plate 12, a door body 13, and a sealing ring 14.
- the region of the first shielding plate 11 facing the microwave cooking cavity forms a first shielding region.
- the first shielding plate 11 is connected to the first surface 12 - 1 of the second shielding plate 12 , and the area of the second shielding plate 12 is larger than that of the first shielding plate 11 .
- the second surface 12 - 2 of the second shielding plate 12 is mounted on the door body 13 .
- the sealing ring 14 is spaced from the first shielding plate 11 , that is, the inner side of the sealing ring 14 is not in direct contact with the outer side of the first shielding plate 11 , but is arranged at a certain distance.
- the area of the second shielding plate 12 on the inner side of the sealing ring 14 facing the microwave cooking cavity forms a second shielding area. It can be seen that the second shielding area is based on the first shielding area, and the area of the second shielding plate 12 enclosed by the sealing ring 14 exceeds the area of the first shielding plate 11. that part.
- the first shielding plate 11 protrudes from the second shielding plate 12 , so when the microwave shielding door 10 is closed, the first shielding plate 11 extends into the cooking cavity of the microwave oven In the body, it is used to shield the microwaves generated in the microwave oven to prevent leakage to the outside.
- the gap between the first shielding plate 11 and the front plate of the microwave oven is set to 1-2 mm (ie, the gap between the outer circumference of the first shielding plate 11 and the cooking cavity) .
- the second shielding plate 12 and the sealing ring 14 are attached to the surface of the front plate.
- the second shielding plate 12 is used to shield the microwaves leaking out through the gap, so that the first shielding plate 11 And the second shielding plate 12 constitutes a double insurance for shielding microwaves.
- the sealing ring 14 plays the role of sealing the steam, so that the steam in the microwave oven does not overflow.
- the sealing ring 14 is fixed around the second shielding plate 12 .
- the sealing ring 14 is tightly attached to the periphery of the second shielding plate 12 by tension.
- the sealing ring 14 is disposed on the second shielding plate 12 . Specifically, the sealing ring 14 is disposed in the area surrounded by the second shielding plate 12 and beyond the first shielding plate 11 , and is disposed at a certain distance from the first shielding plate 11 .
- the door body 13 is provided with a groove (not shown in the figure), the groove surrounds the second shielding plate 12, and the shape of the groove is the same as that of the sealing ring.
- the shape of the sealing ring 14 is corresponding, so that the sealing ring 14 is fixed in the groove and is not easy to come out.
- the sealing ring 14 of the present invention is not in direct contact with the first shielding plate 11, but uses the settings in the above embodiments to connect the sealing ring 14 with the first shielding plate 11.
- the shielding plates 11 are arranged at intervals. Such an arrangement not only reduces the processing requirements and processing accuracy of the first shielding plate 11 and the second shielding plate 12 during the production and processing of the microwave shielding door 10 , but also better shields the leaked microwaves.
- the microwave shielding door 10 further includes a connecting member 15 , the first shielding plate 11 and the first surface 12 of the second shielding plate 12 - 1 is connected by the connecting piece 15 .
- the connecting member 15 is fixedly connected to the first shielding door 11 and is configured to support the first shielding plate 11 .
- the door body 13 includes a door outer panel 13 - 1 and a door inner panel 13 - 2 that are fixedly connected.
- the face 12-2 is mounted on the door inner panel 13-2.
- the microwave shielding door 10 further includes a door handle 16 and a door handle fixing box 17 .
- the upper side of the door outer panel 13 - 1 and the door inner panel 13 - 2 is provided with a hole slot 18 , and the door handle 16 is installed on the door outer panel through the hole slot 18 and the door handle fixing box 17 . 13-1 outside.
- the door handle 16 cooperates with the door handle fixing box 17 , and the microwave shielding door 10 is controlled to be opened and closed by rotating the door handle 16 .
- the periphery of the first shielding plate 11 includes a bending portion 11 - 1 facing the second shielding plate 12 , and the bending portion 11 - 1 is provided with a choke groove structure.
- the depth of the choke groove in the choke groove structure is a quarter microwave wavelength.
- 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 steam generator 150 , a circulation fan 160 and the microwave shielding door 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 is 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 steam generator 150 is optionally disposed at the rear of the cooking cavity 101 , and is configured to blow the steam generated and released by the steam generator 150 into the cooking cavity 101 .
- the circulating fan 160 is optionally arranged at the rear of the cooking cavity 101 and in front of the steam generator 150, and is configured to make the hot air and/or the steam evenly distributed in the cooking cavity 101 .
- the microwave shielding door 10 is disposed at the front of the box, and is configured to shield microwaves leaking from the cooking cavity 101 to the outside of the microwave oven 100 during operation.
- the microwave oven 100 further includes a door connecting part (not shown in the figure), and two sides of the lower part of the door body in the microwave shielding door 100 are provided with a door that can accommodate the door connecting part. hole, the microwave shielding door 100 can be opened and closed through the door connection part.
- the microwave oven 100 further includes an air duct 170 located above the cooking cavity 101 , wherein an end of the air duct 170 away from the heating device 130 gradually changes narrow.
- the air duct 170 can be narrowed from one end close to the heating device 130 , or from any part in the middle of the air duct 170 along the direction away from the heating device 130 , so that the The hot air is dispersed into the cooking cavity 101 along the air duct 170 .
- 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 170 . The rear is passed forward and downward to fill the entire air duct 170 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 170 is a trapezoid or a triangle.
- the heating device 130 is a carbon heating tube
- the circulating fan 160 is a turbo fan
- the steam generator 150 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, circulating ventilation is achieved in the interior of the cooking cavity 101 , and finally, the steam evenly fills the entire cooking cavity 101 .
- the microwave oven 100 further includes a temperature sensor 180, and the temperature sensor 180 is disposed in the air duct 170 away from the heating device 130 and One side of the hot air fan 140 is configured to sense the temperature of the hot air blown by the heating device 130 and the hot air fan 140 .
- 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 150 and the temperature sensor 180 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 and the humidity sensed by the temperature sensor 180 150 generates steam and controls the heating temperature of the heating device 130 .
- the microwave oven 100 further includes a hot air orifice plate 172 and a steam orifice plate 151 .
- the hot air orifice plate 172 is disposed at the junction of the air duct 170 and the cooking cavity 101 , and a plurality of small holes are provided thereon, and the hot air is dispersed to the cooking cavity 101 through the hot air orifice plate 172 inside, so that the hot air evenly fills the cooking cavity 101 .
- the steam orifice plate 151 is disposed at the bottom of the cooking cavity 101 and is provided with a plurality of small holes, and the steam is dispersed into the cooking cavity 101 through the steam orifice plate 151 . Through the steam orifice plate 151, the steam generated by the steam generator 150 can fill the cooking cavity 101 more uniformly, and better moisten the bottom of the food, so as to retain the fresh taste of the food.
- a plurality of steam ports 152 are provided under the rear of the cooking cavity 101 or on the side walls, and the steam is passed through the plurality of steam ports 152 . dispersed into the cooking cavity 101 .
- the functions of the plurality of steam ports 152 are similar to those of the steam orifice plate 151 , and details are not described herein again.
- the microwave oven 100 further includes a partition wall 161 disposed between the circulation fan 160 and the cooking cavity 101 , the partition wall 161 is provided with a plurality of circulation holes 162 , wherein the circulation fan 160 is configured to 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 101 through another part of the circulation holes. The gas inside the cooking cavity 101 is sucked into the circulation fan 160 through a part of the circulation holes distributed in the central area of the circulation fan 160 , and recirculated through another part of the circulation holes distributed in the surrounding area of the circulation fan 160 .
- the gas is released into the cooking cavity 101 , so as to realize multiple alternating thermal cycles inside the cooking cavity 101 , so that the gas is fully mixed and evenly distributed in the cooking cavity 101 .
- the steam generator 150 is located behind the circulation fan 160 , but the present invention is not limited thereto, the steam generator 150 may also be located below the circulation fan 160 , and the steam passes through the steam orifice plate 151 through a separate pipeline. Or the steam port 152 is fed into the cooking cavity 101 .
- the heating device 130 and the hot air fan 140 are used to generate hot air
- the steam generator 150 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.
- the microwave shielding door is respectively provided with a first shielding plate, a second shielding plate and a sealing ring, and the double shielding microwave shielding door structure realizes effective shielding of microwave leakage, and at the same time ensures the steam in the microwave oven. Seal tightness.
- the microwave shielding door of the embodiment of the present invention improves the shielding performance of microwaves, so that the detection head partially extends into the door slit to measure the microwave leakage from the initial 10.5Mw/cm2 compared with the prior art.
- the measurement at the point where the probe part extends into the door slit is at least reduced from greater than 5mW/cm2 to less than 1mW/cm2.
- the microwave leakage is less than or equal to 0.3mW/cm2 (microwave frequency 2450MHz).
- microwave frequency 2450MHz microwave frequency 2450MHz
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Abstract
一种微波屏蔽门（10）及包括其的微波蒸烤箱（100），微波屏蔽门（10）包括：第一屏蔽板（11），第一屏蔽板（11）朝向微波烹饪腔（101）腔体的区域形成第一屏蔽区域；第二屏蔽板（12），第一屏蔽板（11）与第二屏蔽板（12）的第一面（12-1）连接，第二屏蔽板（12）的面积大于第一屏蔽板（11）的面积；门体（13），第二屏蔽板（12）的第二面（12-2）安装在门体（13）上；和密封圈（14），密封圈（14）与第一屏蔽板（11）间隔设置，密封圈（14）内侧的第二屏蔽板（12）朝向微波烹饪腔（101）腔体的区域形成第二屏蔽区域。该微波屏蔽门（10）能够有效屏蔽从微波设备内向外泄漏的微波。
Description
本发明大致涉及厨房电器设备技术领域，尤其涉及一种微波屏蔽门及包括其的微波蒸烤箱。
微波炉或微波蒸烤箱等微波设备在工作时通过产生微波来对食物进行加热，加热前将微波炉或微波蒸烤箱的门开启，将待加热食物放入所述微波炉或微波蒸烤箱内的箱体中，再关闭所述门，对所述待加热食物进行微波加热。由于所述门与箱体并不是固定连接，因此在加热过程中不可避免地会有微波通过所述门而向外泄漏的情况。微波泄漏是微波设备上的难题之一，微波泄漏超标轻则会干扰电信号、损伤电子元器件，造成设备故障；重则会对人体造成伤害。国家标准中要求在距离设备5cm处，微波泄漏≤5mW/cm2(微波频率2450MHz)。
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采用第一屏蔽板、第二屏蔽板和密封圈的双重屏蔽的微波屏蔽门结构，解决了现有技术中微波设备中微波泄漏的问题。
有鉴于现有技术的至少一个缺陷，本发明提出一种微波屏蔽门，包括：
第一屏蔽板，所述第一屏蔽板朝向微波烹饪腔腔体的区域形成第一屏蔽区域；
第二屏蔽板，所述第一屏蔽板与所述第二屏蔽板的第一面连接，所述第二屏蔽板的面积大于所述第一屏蔽板的面积；
门体，所述第二屏蔽板的第二面安装在所述门体上；和
密封圈，所述密封圈与所述第一屏蔽板间隔设置，所述密封圈内侧的第二屏蔽板朝向所述微波烹饪腔腔体的区域形成第二屏蔽区域。
根据本发明的一个方面，其中所述密封圈固定在所述第二屏蔽板的四周。
根据本发明的一个方面，其中所述密封圈设置在所述第二屏蔽板上。
根据本发明的一个方面，其中所述门体上设置有凹槽，所述凹槽围绕所述第二屏蔽板，所述密封圈固定在所述凹槽内。
根据本发明的一个方面，还包括连接件，所述第一屏蔽板与所述第二屏蔽板的第一面通过所述连接件连接。
根据本发明的一个方面，其中所述门体包括固定连接的门外板和门内板，所述第二屏蔽板的第二面安装在所述门内板上。
根据本发明的一个方面，还包括门把手和门把手固定盒，所述门外板和门内板的上侧设置有孔槽，所述门把手通过所述孔槽和所述门把手固定盒安装在所述门外板的外侧。
根据本发明的一个方面，其中所述第一屏蔽板的四周包括朝向所述第二屏蔽板的弯折部，所述弯折部上设置有扼流槽结构。
本发明还涉及一种微波蒸烤箱，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到所述烹饪腔内；
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；
循环风扇，配置成可使所述热风和\或所述蒸汽在所述烹饪腔中均匀分布；和
如上任一项所述的微波屏蔽门，所述微波屏蔽门设置在所述箱体的前部，配置成可屏蔽所述微波蒸烤箱在工作时从所述烹饪腔内向外泄漏的微波。
根据本发明的一个方面，还包括门连接部，所述微波屏蔽门中门体的下部两侧设置有可容纳所述门连接部的孔槽，所述微波屏蔽门可通过所述门连接部开启和关闭。
根据本发明的一个方面，还包括位于所述烹饪腔上方的风道，其中所述加热装置和热风风扇吹出的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，其中所述风道远离所述加热装置的一端逐渐变窄，所述加热装置为碳加热装置，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，还包括温度传感器，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，配置成可感测所述加热装置和热风风扇吹出的热风的温度。
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，还包括热风孔板和蒸汽孔板，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，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，所述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。
本发明的实施例通过对微波屏蔽门分别设置第一屏蔽板、第二屏蔽板和密封圈以及密封圈与第一屏蔽板和第二屏蔽板之间的位置关系，对从微波蒸烤箱内泄漏的微波进行双重屏蔽，提高了所述微波屏蔽门的密封性和微波屏蔽性，有效避免了微波向外泄漏的情况。
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微波屏蔽门的示意图；
图2示出了根据本发明一个实施例的微波屏蔽门的爆炸图；
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。
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微波屏蔽门的示意图。图2示出了根据本发明一个实施例的微波屏蔽门的爆炸图。如图1和图2所示，所述微 波屏蔽门10包括：第一屏蔽板11、第二屏蔽板12、门体13、密封圈14。所述第一屏蔽板11朝向微波烹饪腔腔体的区域形成第一屏蔽区域。所述第一屏蔽板11与所述第二屏蔽板12的第一面12-1连接，所述第二屏蔽板12的面积大于所述第一屏蔽板11的面积。所述第二屏蔽板12的第二面12-2安装在所述门体13上。所述密封圈14与所述第一屏蔽板11间隔设置，即所述密封圈14的内侧与所述第一屏蔽板11的外侧没有直接接触，而是间隔一定的距离设置。所述密封圈14内侧的第二屏蔽板12朝向所述微波烹饪腔腔体的区域形成第二屏蔽区域。由此可知，所述第二屏蔽区域在所述第一屏蔽区域的基础上，还增加了所述密封圈14围起来的第二屏蔽板12的面积超出所述第一屏蔽板11的面积的那一部分。
如图1所示，第一屏蔽板11突出设置于第二屏蔽板12上，因此当所述微波屏蔽门10闭合后，所述第一屏蔽板11伸入所述微波蒸烤箱的烹饪腔腔体内，用于屏蔽所述微波蒸烤箱内产生的微波，以防向外泄漏。根据本发明的一个实施例，所述第一屏蔽板11与微波蒸烤箱的前板之间的间隙设置为1～2mm(即所述第一屏蔽板11的外周与烹饪腔之间的间隙)。所述第二屏蔽板12和所述密封圈14贴在所述前板表面，所述第二屏蔽板12用来屏蔽透过所述间隙向外泄漏的微波，从而所述第一屏蔽板11和所述第二屏蔽板12构成屏蔽微波的双重保险。同时所述密封圈14起到密封蒸汽的作用，使所述微波蒸烤箱内的蒸汽不向外溢。
根据本发明的一个实施例，如图1所示，所述密封圈14固定在所述第二屏蔽板12的四周。可选地，所述密封圈14通过张力作用紧贴在所述第二屏蔽板12的四周。
根据本发明的一个实施例，所述密封圈14设置在所述第二屏蔽板12上。具体地，所述密封圈14设置在所述第二屏蔽板12所包围的、超出所述第一屏蔽板11的区域中，并且与所述第一屏蔽板11间隔一定距离设置。
根据本发明的一个实施例，所述门体13上设置有凹槽(图中未示出)，所述凹槽围绕所述第二屏蔽板12，所述凹槽的形状与所述密封圈14的形状 相对应，以使所述密封圈14固定在所述凹槽内，不易脱出。
与现有技术相比，本发明的所述密封圈14不与所述第一屏蔽板11直接接触，而是采用如上几种实施例中的设置，将所述密封圈14与所述第一屏蔽板11间隔设置。这样的设置在所述微波屏蔽门10的生产加工过程中，不仅降低了对所述第一屏蔽板11和第二屏蔽板12的加工要求和加工精度，而且能够更好地屏蔽泄漏的微波。
根据本发明的一个实施例，如图1和图2所示，所述微波屏蔽门10还包括连接件15，所述第一屏蔽板11与所述第二屏蔽板12的第一面12-1通过所述连接件15连接。可选地，所述连接件15与所述第一屏蔽门11固定连接，配置成可支撑所述第一屏蔽板11。
根据本发明的一个实施例，如图1和图2所示，所述门体13包括固定连接的门外板13-1和门内板13-2，所述第二屏蔽板12的第二面12-2安装在所述门内板13-2上。
根据本发明的一个实施例，如图1和图2所示，所述微波屏蔽门10还包括门把手16和门把手固定盒17。所述门外板13-1和门内板13-2的上侧设置有孔槽18，所述门把手16通过所述孔槽18和所述门把手固定盒17安装在所述门外板13-1的外侧。所述门把手16和所述门把手固定盒17相配合，通过旋转所述门把手16，控制所述微波屏蔽门10的开启和关闭。
根据本发明的一个实施例，如图1和图2所示，所述第一屏蔽板11的四周包括朝向所述第二屏蔽板12的弯折部11-1，所述弯折部11-1上设置有扼流槽结构。可选地，所述扼流槽结构中扼流槽的深度为四分之一微波波长。
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、蒸汽发生器150、循环风扇160以及所述微波屏蔽门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。所述蒸汽发生器150可选地设置在所述烹饪腔101的后部，配置成可将所述蒸汽发生器150产生并释放的蒸汽吹到所述烹饪腔101内。所述循环风扇160可选地设置在所述烹饪腔101的后部、所述蒸汽发生器150的前方，配置成可使所述热风和\或所述蒸汽在所述烹饪腔101中均匀分布。所述微波屏蔽门10设置在所述箱体的前部，配置成可屏蔽所述微波蒸烤箱100在工作时从所述烹饪腔101内向外泄漏的微波。
根据本发明的一个实施例，所述微波蒸烤箱100还包括门连接部(图中未示出)，所述微波屏蔽门100中门体的下部两侧设置有可容纳所述门连接部的孔槽，所述微波屏蔽门100可通过所述门连接部开启和关闭。
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170，其中所述风道170远离所述加热装置130的一端逐渐变窄。可选地，所述风道170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170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170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170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170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170的竖直截面为梯形或三角形。当所述热风沿着所述风道170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”171，迫使所述热风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和图4所示，其中所述加热装置130为碳加热管，所述循环风扇160为涡轮风扇，所述蒸汽发生器150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，如图3和图4所示，所述微波蒸烤箱100还包括温度传感器180，所述温度传感器180设置在所述风道170内、远离所述加热装置130和热风风扇140的一侧，配置成可感测所述加热装置130和热风风扇140吹出的热风的温度。
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150和温度传感器180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180感测的热风的温度和所述湿度控制所述蒸汽发生器150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172和蒸汽孔板151。所述热风孔板172设置在所述风道170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172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。所述蒸汽孔板151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151被分散到所述烹饪腔101内。通过所述蒸汽孔板151，可以使所述蒸汽发生器150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，所述烹饪腔101的后部下方或侧壁上设置有多个蒸汽口152，所述蒸汽通过所述多个蒸汽口152被分散到所述烹饪腔101内。所述多个蒸汽口152的作用与所述蒸汽孔板151的作用相似，在此不再赘述。所述微波蒸烤箱100还包括设置在所述循环风扇160与所述烹饪腔101之间的分隔壁161，所述分隔壁161上设置有多个 循环孔162，其中所述循环风扇160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160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160内，通过分布在所述循环风扇160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150位于循环风扇160的后方，本发明并不限于此，蒸汽发生器150也可以位于循环风扇160的下方，蒸汽通过单独的管路经由蒸汽孔板151或蒸汽口152被送入烹饪腔101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150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。
本发明的实施例对微波屏蔽门分别设置第一屏蔽板、第二屏蔽板以及密封圈，通过双重屏蔽的微波屏蔽门结构实现了对微波泄漏的有效屏蔽，同时保证了微波蒸烤箱内蒸汽的密封严密性。与现有技术相比，本发明实施例的微波屏蔽门提高了微波的屏蔽性，使所述探测头部分伸入门缝处测量微波泄漏量由最初的10.5Mw/cm2相较于现有技术从探测头部分伸入门缝处测量至少从大于5mW/cm2降低到小于1mW/cm2。如果按照国家标准中要求在距离设备5cm处进行测量，微波泄漏≤0.3mW/cm2(微波频率2450MHz)。对比商用微波炉门体平整屏蔽金属板在内圈，在运营中开合不容易夹到东西从而破坏屏蔽金属板平整度影响微波屏蔽效果。
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)
- 一种微波屏蔽门，包括：第一屏蔽板，所述第一屏蔽板朝向微波烹饪腔腔体的区域形成第一屏蔽区域；第二屏蔽板，所述第一屏蔽板与所述第二屏蔽板的第一面连接，所述第二屏蔽板的面积大于所述第一屏蔽板的面积；门体，所述第二屏蔽板的第二面安装在所述门体上；和密封圈，所述密封圈与所述第一屏蔽板间隔设置，所述密封圈内侧的第二屏蔽板朝向所述微波烹饪腔腔体的区域形成第二屏蔽区域。
- 如权利要求1所述的微波屏蔽门，其中所述密封圈固定在所述第二屏蔽板的四周。
- 如权利要求1所述的微波屏蔽门，其中所述密封圈设置在所述第二屏蔽板上。
- 如权利要求1所述的微波屏蔽门，其中所述门体上设置有凹槽，所述凹槽围绕所述第二屏蔽板，所述密封圈固定在所述凹槽内。
- 如权利要求1-4中任一项所述的微波屏蔽门，还包括连接件，所述第一屏蔽板与所述第二屏蔽板的第一面通过所述连接件连接。
- 如权利要求1-4中任一项所述的微波屏蔽门，其中所述门体包括固定连接的门外板和门内板，所述第二屏蔽板的第二面安装在所述门内板上。
- 如权利要求6所述的微波屏蔽门，还包括门把手和门把手固定盒，所述门外板和门内板的上侧设置有孔槽，所述门把手通过所述孔槽和所述门把手固定盒安装在所述门外板的外侧。
- 如权利要求2所述的微波屏蔽门，其中所述第一屏蔽板的四周包括朝向所述第二屏蔽板的弯折部，所述弯折部上设置有扼流槽结构。
- 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到所述烹饪腔内；蒸汽发生器，配置成可产生蒸汽并将所述蒸汽吹到所述烹饪腔内；循环风扇，配置成可使所述热风和\或所述蒸汽在所述烹饪腔中均匀分布；和如权利要求1-8中任一项所述的微波屏蔽门，所述微波屏蔽门设置在所述箱体的前部，配置成可屏蔽所述微波蒸烤箱在工作时从所述烹饪腔内向外泄漏的微波。
- 如权利要求9所述的微波蒸烤箱，还包括门连接部，所述微波屏蔽门中门体的下部两侧设置有可容纳所述门连接部的孔槽，所述微波屏蔽门可通过所述门连接部开启和关闭。
- 如权利要求9或10所述的微波蒸烤箱，还包括位于所述烹饪腔上方的风道，其中所述加热装置和热风风扇吹出的热风沿着所述风道被分散到所述烹饪腔内。
- 如权利要求11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，所述加热装置为碳加热装置，所述循环风扇为涡轮风扇，所述蒸汽发生器为蒸汽锅炉。
- 如权利要求11所述的微波蒸烤箱，还包括温度传感器，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，配置成可感测所述加热装置和热风风扇吹出的热风的温度。
- 如权利要求13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。
- 如权利要求11所述的微波蒸烤箱，还包括热风孔板和蒸汽孔板，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，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。
- 如权利要求9或10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，所述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。
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