A microwave leakage-proof oven door structure and a cooking device

Abstract

The utility model discloses a kind of oven door structures of microwave leakage prevention, the oven door structure includes furnace body, oven door and front panel, the furnace body inside is provided with the oven cavity of front end opening;The oven door is rotationally arranged in the front side of furnace body to open or close oven cavity;The front panel is peripherally arranged in the outer periphery of oven cavity front end opening;A protrusion is annularly provided on the front panel. Among them, the oven door includes door main body and shielding door plate arranged on the side of door main body towards furnace body;When rotating oven door to close oven cavity, the protrusion on the shielding door plate and front panel is flatly docked to realize microwave shielding. Thus, by annularly providing a protrusion on the front panel, the machining flatness of the protrusion can be ensured, so that the protrusion can be completely flat, when rotating oven door to close oven cavity, the protrusion of the shielding door plate can be flatly docked with front panel, so that better microwave shielding effect is achieved. In addition, the utility model also provides a cooking device with the oven door structure.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliance technology, and in particular to a microwave leakage-proof oven door structure and cooking device. Background Technology

[0002] Microwave cooking appliances use a microwave generator to produce microwaves, which are then transmitted to the oven cavity through a waveguide to heat food. When microwave cooking appliances are in operation, it is important to prevent microwave leakage, as the human body can also absorb microwaves, and exposure to microwave radiation can have adverse health effects.

[0003] In microwave cooking appliances, microwave leakage is prevented by ensuring a smooth connection between the oven door and the front panel of the oven cavity. However, this microwave shielding method requires a high degree of flatness in the front panel of the oven cavity, resulting in very high processing difficulty and cost. It is almost impossible to make the front panel of the oven cavity completely flat, thus its effect in preventing microwave leakage is relatively poor. Utility Model Content

[0004] To overcome at least one of the defects described in the prior art, this utility model provides a microwave leakage prevention oven door structure. By circumferentially forming a protrusion on the front panel, the flatness of the protrusion can be ensured, making it completely flat. When the oven door is rotated to close the oven cavity, the shielding door panel can smoothly align with the protrusion on the front panel, thereby achieving a better microwave shielding effect. In addition, this utility model also provides a cooking device with this oven door structure, which has a better microwave shielding effect.

[0005] The technical solution adopted by this utility model to solve its problem is: A microwave leakage-proof oven door structure, comprising: The furnace body has an internal furnace cavity with an opening at the front end; A furnace door, which is rotatably mounted on the front side of the furnace body to open or close the furnace cavity; A front panel is arranged around the outer periphery of the front opening of the furnace cavity; a protrusion is arranged around the front panel; wherein, the furnace door includes a door body and a shielding door plate arranged on the side of the door body facing the furnace body; when the furnace door is rotated to close the furnace cavity, the shielding door plate and the protrusion on the front panel are flushly aligned to achieve microwave shielding.

[0006] As an optional implementation, the protrusion has a front end face; when the furnace door is rotated to close the furnace cavity, the shielding door plate and the front end face of the protrusion are flush together and the horizontal gap between them is a, and satisfies: 0≤a≤2mm.

[0007] As an optional implementation, the width of the protruding front end face is b, and satisfies: b≥6mm.

[0008] As an optional implementation, a sealing ring is also included, and a sealing groove is also provided around the front panel between the protrusion and the front opening of the furnace cavity, and the sealing ring is disposed in the sealing groove; The furnace door also includes a glass panel, and the shielding door panel has a recessed portion around its circumference, with the glass panel disposed within the recessed portion; When the furnace door is rotated to close the furnace chamber, the glass panel abuts against the sealing ring to achieve a seal.

[0009] As an optional implementation, the sealing groove is formed by extending inward and bending from the first side of the protrusion, and the sealing groove is welded and fixed to the outer wall of the furnace body.

[0010] As an alternative implementation, the recess is formed by extending inward from the first edge of the shielding door panel and bending.

[0011] As an optional implementation, the shielding door panel is also provided with a choke ring for shielding microwaves, the choke ring being formed by extending outward from the second side of the shielding door panel and being bent.

[0012] As an optional implementation, the furnace door further includes a door frame surrounding the outer periphery of the door body, the door frame having a rear end face; When the furnace door is rotated to close the furnace cavity, the rear end face of the door frame and the front panel are in clearance fit, and the horizontal gap between them is c, which satisfies c > a.

[0013] As an optional implementation, both the shielding door panel and the front panel are made of microwave shielding material.

[0014] In addition, this utility model also provides a cooking device, including the above-mentioned oven door structure, microwave generating module, and steam generating module, wherein: Both the microwave generating module and the steam generating module are mounted on the furnace body and supply microwaves and steam to the furnace cavity, respectively.

[0015] In summary, the microwave leakage-proof oven door structure and cooking device provided by this utility model have the following beneficial effects: (1) The furnace door structure of this utility model has a protrusion on the front panel, which can ensure the flatness of the protrusion and make it completely flat. When the furnace door is rotated to close the furnace cavity, the shielding door plate on the furnace door can be smoothly connected with the protrusion on the front panel, thereby achieving a better microwave shielding effect.

[0016] (2) The furnace door structure of this utility model has a protrusion on the front panel. When the furnace door is rotated to close the furnace cavity, the horizontal gap a between the shielding door panel and the front end face of the protrusion is smaller than the horizontal gap c between the rear end face of the door frame and the front panel. This avoids the rear end face of the door frame from contacting the front panel first, which would result in a large gap between the shielding door panel and the front panel, thereby improving the reliability of microwave shielding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the furnace door structure of this utility model; Figure 2 This is an exploded view of the furnace door structure of this utility model; Figure 3 This is a schematic diagram of the furnace door structure in this utility model; Figure 4 This is an exploded schematic diagram of the furnace door in the furnace door structure of this utility model; Figure 5 This is a cross-sectional schematic diagram of the furnace door structure of this utility model; Figure 6 for Figure 5 Enlarged diagram of section A in the middle; Figure 7 This is a schematic diagram of the structure of the cooking device of this utility model.

[0018] The meanings of the reference numerals in the attached figures are as follows: 1. Furnace door structure; 11. Furnace body; 111. Furnace cavity; 12. Furnace door; 121. Door body; 122. Shielding door panel; 1221. Recess; 1222. Choke ring; 12221. Fourth fold; 12222. Fifth fold; 12223. Sixth fold; 12224. Seventh fold; 12225. Eighth fold; 123. Glass panel; 124. Door frame; 1241. Rear end face; 13. Front panel; 131. Protrusion; 1311. Front end face; 132. Sealing groove; 1321. First fold; 1322. Second fold; 1323. Third fold; 14. Sealing ring; 2. Microwave generating module; 3. Steam generating module. Detailed Implementation

[0019] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example 1 Combination Figures 1 to 6 As shown, this application provides a microwave leakage prevention oven door structure 1, which includes an oven body 11 and an oven door 12. The oven body 11 has an oven cavity 111 with a front opening inside. The oven door 12 is rotatably disposed on the front side of the oven body 11 to open or close the oven cavity 111. It also includes a front panel 13, which surrounds the outer periphery of the front opening of the oven cavity 111. A protrusion 131 is circumferentially disposed on the front panel 13. Preferably, the protrusion 131 is an annular step formed by the front panel 13 protruding forward. The oven door 12 includes a door body 121 and a shielding door plate 122 disposed on the side of the door body 121 facing the oven body 11 (i.e., the rear side of the door body 121). When the oven door 12 is rotated to close the oven cavity 111, the shielding door plate 122 and the protrusion 131 are flushly aligned, thereby achieving microwave shielding.

[0023] Because the front panel 13 has a large area, processing it to be completely flat would be extremely difficult and costly, and even then, achieving perfect flatness might not be possible. Therefore, this application provides a protrusion 131 around the front panel 13. Since the protrusion 131 has a small area, its flatness can be guaranteed, ensuring it is completely flat. When the oven door 12 is rotated to close the oven cavity 111, the shielding door plate 122 can smoothly align with the protrusion 131 on the front panel 13, thus achieving a better microwave shielding effect.

[0024] Combination Figure 2 and Figure 6As shown, the protrusion 131 has a front end face 1311, which is arranged vertically. When the furnace door 12 is rotated until the furnace cavity 111 is closed, the shielding door panel 122 is also arranged vertically. The screen door panel 122 is parallel to the front end face 1311 of the protrusion 131 and the two are flush together. The horizontal gap between the two is 'a', which satisfies the condition: 0 ≤ a ≤ 2 mm.

[0025] That is, when the horizontal gap a between the two is equal to 0, the shielding door 122 and the front end face 1311 of the protrusion 131 fit together perfectly without any gaps. Therefore, it can completely shield the microwave and prevent microwave leakage. When the horizontal gap a between the two is greater than 0 and less than or equal to 2mm, there is still a small gap between the shielding door 122 and the front end face 1311 of the protrusion 131. However, since the two are flatly joined, it can also shield most of the microwaves to achieve a better microwave shielding effect.

[0026] It should be noted that the part of the shielding door panel 122 that is used to smoothly connect with the protrusion 131 of the front panel 13 is also protruding. Therefore, the smoothness of the part of the shielding door panel 122 that is smoothly connected with the protrusion 131 can also be guaranteed, thereby achieving a smooth connection between the two and thus achieving a better microwave shielding effect.

[0027] Preferably, the width of the front end face 1311 of the protrusion 131 on the front panel 13 is b, and satisfies: b≥6mm. With this limitation, when the front end face 1311 of the protrusion 131 is flatly attached to or flatly connected with the shielding door panel 122, the microwave shielding area formed between the two is also larger, thereby better shielding the microwave and preventing microwave leakage.

[0028] See also Figure 2 and Figure 6 The furnace door structure 1 also includes a sealing ring 14, and the front panel 13 is also provided with a sealing groove 132 located between the protrusion 131 and the front opening of the furnace cavity 111. The sealing ring 14 is disposed in the sealing groove 132. The furnace door 12 also includes a glass panel 123 disposed on the shielding door plate 122. When the furnace door 12 is rotated to close the furnace cavity 111, the glass panel 123 abuts against the sealing ring 14 to achieve a seal, thereby preventing steam leakage in the furnace cavity 111.

[0029] The sealing groove 132 is formed by extending inward and bending the first side of the protrusion 131. Specifically, the first side of the protrusion 131 is first bent backward to form a first folded edge 1321, then bent inward to form a second folded edge 1322, and finally bent forward to form a third folded edge 1323. The first folded edge 1321, the second folded edge 1322 and the third folded edge 1323 surround each other to form the sealing groove 132.

[0030] The third folded edge 1323 is fixed to the outer wall of the furnace body 11 by welding, thereby achieving the connection and fixation between the front panel 13 and the furnace body 11.

[0031] Combination Figure 4 and Figure 6 As shown, the shielding door panel 122 is also provided with a recess 1221, and the glass panel 123 is disposed in the recess 1221. Specifically, the shielding door panel 122 has a first side and a second side, and the recess 1221 is formed by extending inward from the first side of the shielding door panel 122 and bending. Preferably, when the glass panel 123 is disposed in the recess 1221, the rear end face of the glass panel 123 is flush with the rear end face of the shielding door panel 122, thereby ensuring its flatness. With this configuration, in some application scenarios, such as when the oven door structure 1 of this application is installed in a household appliance with steam cooking function and microwave heating function, on the one hand, it can ensure the sealing performance when the glass panel 123 is connected to the front panel 13 (i.e., ensure that the glass panel 123 can abut against the sealing ring 14), thereby preventing steam leakage in the oven cavity 111; on the other hand, it can also ensure the flatness of the connection between the shielding panel 122 and the protrusion 131 on the front panel 13, thereby preventing microwave leakage.

[0032] It should be noted that, in order to further improve the microwave shielding of the furnace door structure 1, a choke plate can also be set between the shielding door panel 122 and the glass panel 123. In use, since the rear end face of the glass panel 123 faces the furnace cavity 111 of the furnace body 11, and the periphery of the glass panel 123 is sealed to the furnace cavity 111 by the sealing ring 14, microwaves will pass through the glass panel 123 and enter between the glass panel 123 and the shielding door panel 122. By setting the choke plate, the microwaves can be blocked and reflected, thereby greatly reducing the amount of microwaves entering between the shielding door panel 122 and the front panel 13.

[0033] In addition, a choke ring 1222 for shielding microwaves is also provided around the shielding door plate 122. The choke ring 1222 is formed by extending outward and bending from the second side of the shielding door plate 122. Specifically, the second side of the shielding door plate 122 is first bent forward to form a fourth folded edge 12221, then bent outward to form a fifth folded edge 12222, then bent backward to form a sixth folded edge 12223, then bent inward to form a seventh folded edge 12224, and finally bent forward to form an eighth folded edge 12225. The sixth folded edge 12223, the seventh folded edge 12224, and the eighth folded edge 12225 are all choke teeth.

[0034] Therefore, by setting a choke ring 1222 on the shielding door plate 122, when the shielding door plate 122 and the front end face 1311 of the protrusion 131 are flatly connected and there is a small gap between them, when a small amount of microwaves leak out from the gap between the shielding door plate 122 and the front end face of the protrusion 131, they can be blocked and canceled by the choke ring 1222, thereby achieving complete shielding of microwaves and preventing them from leaking and causing harm to human health.

[0035] Therefore, the flat connection between the shielding door panel 122 and the protrusion 131 of the front panel 13, and the choke ring 1222 on the shielding door panel 122, forms a double microwave leakage barrier, thereby ensuring that the microwaves in the furnace cavity 111 will not leak out from the gap between the furnace door 12 and the front panel 13, thus ensuring user safety.

[0036] Combination Figures 3 to 6 As shown, the furnace door 12 also includes a door frame 124 surrounding the door body 121 and the choke ring 1222. The door frame 124 has a rear end face 1241, which protrudes from the shielding door panel 122 towards the furnace body 11. When the furnace door 12 is rotated to close the furnace cavity 111, the rear end face 1241 of the door frame 124 is in clearance fit with the front panel 13. The horizontal gap between the rear end face 1241 of the door frame 124 and the front panel 13 is c, and c > a. Preferably, the door frame 124 is made of plastic.

[0037] In traditional microwave cooking appliances, the front end face 1311 of the front panel 13 is a flat surface. Since the rear end face 1241 of the door frame 124 protrudes from the shielding door plate 122 on the side facing the oven body 11, when the oven door 12 is rotated to close the oven cavity 111, the door frame 124 will first come into contact with the front panel 13. At this time, there will be a large gap between the shielding door plate 122 and the front panel 13. Therefore, a large amount of microwaves will leak out through the gap between the shielding door plate 122 and the front panel 13, thereby causing harm to the human body.

[0038] To avoid the above situation, this application provides a protrusion 131 around the front panel 13. When the oven door 12 is rotated to close the oven cavity 111, the gap a between the shielding door plate 122 on the oven door 12 and the front end face 1311 of the protrusion 131 is smaller than the gap c between the rear end face 1241 of the door frame 124 and the front panel 13. That is, the shielding door plate 122 will contact the front panel 13 first, thereby avoiding the rear end face 1241 of the door frame 124 from contacting the front panel 13 first, which would result in a large gap between the shielding door plate 122 and the front panel 13. This ensures that the shielding door plate 122 and the front panel 13 can be smoothly connected or flatly fitted, thereby improving the reliability of microwave shielding.

[0039] Preferably, both the shielding door panel 122 and the front panel 13 are made of microwave shielding materials, such as metal or stainless steel, which have a better microwave shielding effect.

[0040] Example 2 Combination Figure 7 As shown, this application also provides a cooking device, which includes the oven door structure 1 of Embodiment 1, a microwave generating module 2 and a steam generating module 3. The microwave generating module 2 and the steam generating module 3 are both disposed on the oven body 11 and respectively provide microwaves and steam to the oven cavity 111, thereby realizing the cooking of food.

[0041] The cooking device in this application is specifically a microwave-steam oven. The microwave generating module 2 includes a microwave generator placed on the oven body 11. The microwave generator generates microwaves and introduces them into the oven cavity 111 to heat the food, thereby realizing a standalone microwave function. The steam generating module 3 includes a water tank and a steam generator. The steam generator is connected to the oven cavity 111 to deliver high-temperature steam into the oven cavity 111 during operation, thereby cooking the food in the oven cavity 111, thus realizing a standalone steaming function. In addition, it also includes a heating tube (not shown in the figure) placed on the oven cavity 111. The heating tube can directly heat the food in the oven cavity 111 to realize a standalone baking function. Furthermore, the above-mentioned microwave, steaming and / or heating functions can of course be combined together. For example, the heating tube can be combined with the steam generating module 3, or the heating tube can be combined with the microwave generating module 2, or the heating tube, the microwave generating module 2 and the steam generating module 3 can all be combined. There are no limitations here.

[0042] In summary, the microwave leakage-proof oven door structure 1 and cooking device provided by this utility model have the following beneficial effects: (a) The furnace door structure 1 of this utility model has a protrusion 131 on the front panel 13, which can ensure the flatness of the processing of the protrusion 131 and make the protrusion 131 completely flat. When the furnace door 12 is rotated to close the furnace cavity 111, the shielding door plate 122 can be smoothly connected with the protrusion 131 on the front panel 13, thereby achieving a better microwave shielding effect.

[0043] (ii) The furnace door structure 1 of this utility model has a protrusion 131 on the front panel 13. When the furnace door 12 is rotated to close the furnace cavity 111, the horizontal gap a between the shielding door plate 122 and the front end face 1311 of the protrusion 131 is smaller than the horizontal gap c between the rear end face 1241 of the door frame 124 and the front panel 13. This avoids the door frame 124 from contacting the front panel 13 first, which would cause a large gap between the shielding door plate 122 and the front panel 13, thereby improving the reliability of microwave shielding.

[0044] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A microwave leakage-proof oven door structure (1), characterized in that, include: The furnace body (11) has a furnace cavity (111) with an opening at the front end. Furnace door (12), which is rotatably disposed on the front side of the furnace body (11) to open or close the furnace cavity (111); A front panel (13) is arranged around the outer periphery of the front opening of the furnace cavity (111); a protrusion (131) is provided on the front panel (13); the furnace door (12) includes a door body (121) and a shielding door plate (122) arranged on the side of the door body (121) facing the furnace body (11); when the furnace door (12) is rotated to close the furnace cavity (111), the shielding door plate (122) and the protrusion (131) on the front panel (13) are flushly connected to achieve microwave shielding.

2. The door structure (1) according to claim 1, characterized in that: The protrusion (131) has a front end face (1311); when the furnace door (12) is rotated to close the furnace cavity (111), the shielding door plate (122) and the front end face (1311) of the protrusion (131) are flatly connected and the horizontal gap between them is a, and satisfies: 0≤a≤2mm.

3. The door structure (1) according to claim 2, characterized in that: The width of the front end face (1311) of the protrusion (131) is b, and satisfies: b≥6mm.

4. The door structure (1) according to any one of claims 1-3, characterized in that: It also includes a sealing ring (14), and the front panel (13) is also provided with a sealing groove (132) located between the protrusion (131) and the front opening of the furnace cavity (111), and the sealing ring (14) is disposed in the sealing groove (132); The furnace door (12) also includes a glass panel (123), and the shielding door panel (122) is provided with a recess (1221) on the upper ring, and the glass panel (123) is disposed in the recess (1221); When the furnace door (12) is rotated to close the furnace chamber (111), the glass panel (123) abuts against the sealing ring (14) to achieve a seal.

5. The furnace door structure (1) according to claim 4, characterized in that: The sealing groove (132) is formed by extending inward and bending from the first side of the protrusion (131), and the sealing groove (132) is welded and fixed to the outer wall of the furnace body (11).

6. The door structure (1) according to claim 4, characterized in that The recess (1221) is formed by extending inward and bending from the first side of the shielding door panel (122).

7. The door structure (1) according to any one of claims 1-3, characterized in that The shielding door panel (122) is also provided with a choke ring (1222) for shielding microwaves. The choke ring (1222) is formed by extending outward from the second side of the shielding door panel (122) and bending.

8. The door structure (1) according to any one of claims 1-3, characterized in that: The furnace door (12) also includes a door frame (124) surrounding the outer periphery of the door body (121), the door frame (124) having a rear end face (1241). When the furnace door (12) is rotated to close the furnace cavity (111), the rear end face (1241) of the door frame (124) and the front panel (13) are fitted with a clearance and the horizontal gap between them is c, which satisfies c > a.

9. The door structure (1) according to any one of claims 1-3, characterized in that Both the shielding door panel (122) and the front panel (13) are made of microwave shielding material.

10. A cooking apparatus characterized by, Includes the furnace door structure (1), microwave generating module (2), and steam generating module (3) as described in any one of claims 1-9, wherein: The microwave generating module (2) and the steam generating module (3) are arranged on the furnace body (11) and provide microwaves and steam into the furnace cavity (111) respectively.

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