CN216924445U - Microwave oven and waveguide box structure thereof - Google Patents

Abstract

The utility model relates to a microwave oven and a waveguide box structure thereof. The waveguide box structure comprises a cover body, a first box body, a second box body and a protection part, wherein the cover body comprises a first cover plate and a second cover plate which are connected in a non-straight angle or a non-zero angle; the first cover plate is covered on the first box body and is encircled into a first channel, and a first flanging is arranged on the first box body; the first box body is connected with the second box body, the second cover plate is covered on the second box body and surrounds a second channel, the first channel is communicated with the second channel, a second flanging is arranged on the second box body, a first gap is formed between the first flanging and the second flanging, and the first gap can be communicated with the first channel and the second channel; the guard cover is disposed at the first void. The protection piece cover is arranged on the first gap, so that the protection piece is guaranteed to completely block the first gap, and the microwave is prevented from leaking from the interior of the waveguide box structure to the outside. The safety and the reliability of the waveguide box structure are improved.

Description

Microwave oven and waveguide box structure thereof

Technical Field

The utility model relates to the technical field of household appliances, in particular to a microwave oven and a waveguide box structure thereof.

Background

A microwave oven generally comprises a power supply, a magnetron, a waveguide box, a control circuit, a cooking cavity, and the like, wherein a microwave inlet is formed on the wall of the cooking cavity, the magnetron generates microwaves, and the microwaves are conducted into the cooking cavity through the waveguide box, thereby heating food.

The traditional waveguide box is manufactured by a sheet metal part through a stretching process, the shape of the traditional waveguide box is generally in a straight line shape or an L shape, the L-shaped waveguide box comprises a body and a cover body covering the body, and the cover body is welded to a welding flanging of the body through a welding process. Because the sheet metal component atress is inhomogeneous in tensile technology for welding turn-ups warp inequality, unevenness's phenomenon appears easily in the welding turn-ups, and after the lid welded the welding turn-ups of body, the crack appears easily in the welding department, and the microwave reveals away from the crack easily, causes certain harm.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a microwave oven and a waveguide box structure thereof with a safer and more reliable structure.

A waveguide box structure comprises a cover body, a first box body, a second box body and a protection piece, wherein the cover body comprises a first cover plate and a second cover plate which are connected in a non-straight angle or a non-zero angle; the first cover plate is covered on the first box body and encloses a first channel, and a first flanging is arranged at the edge of an opening, which is used for being connected with the first cover plate, on the first box body; the first box body is connected with the second box body, the second cover plate is covered on the second box body and encloses a second channel, the first channel is communicated with the second channel, a second flanging is arranged at the edge of an opening, used for being connected with the second cover plate, of the second box body, and a first gap is formed between the first flanging and the second flanging at the position corresponding to the connection position of the first cover plate and the second cover plate; the guard cover is provided at the first gap and closes the first gap.

In one embodiment, the first box body comprises a first bottom plate and a first enclosing plate, the first enclosing plate is arranged along the edge of the first bottom plate, the first enclosing plate and the first bottom plate enclose a first groove body, the first enclosing plate is arranged on the first groove body in a covering mode and forms the first channel, the first flanging is arranged on one side, away from the first bottom plate, of the first enclosing plate, and the first flanging and the first enclosing plate are connected in a non-straight angle or a non-zero angle.

In one embodiment, the second box body comprises a second bottom plate and a second enclosing plate, the second enclosing plate is arranged along the edge of the second bottom plate, a second groove body is defined by the second enclosing plate and the second bottom plate, the second cover plate is arranged on the second groove body in a covering mode and forms the second channel, the second flanging is arranged on one side, away from the second bottom plate, of the second enclosing plate, and the second flanging and the second enclosing plate are connected in a non-straight angle or a non-zero angle.

In one embodiment, the second bottom plate and the first bottom plate are connected at a non-straight angle or a non-zero angle, the first enclosing plate and the second enclosing plate form a second gap at the connection position of the first bottom plate and the second bottom plate, the second gap can be communicated with the first channel, the second channel and the first gap, the protection piece is arranged at the connection position of the first bottom plate and the second bottom plate, one part of the protection piece can be covered on the first gap, and the other part of the protection piece can be covered on the second gap.

In one embodiment, the protection member includes a baffle plate and a protection plate, the protection plate is connected to a connection portion of the first base plate and the second base plate, the baffle plate is connected to the protection plate, the protection plate can be covered on the second gap, two sides of the protection plate are respectively in contact with or approximately in contact with the first enclosing plate and the second enclosing plate, the baffle plate can be covered on the first gap, and two sides of the baffle plate are respectively in contact with or approximately in contact with the first flanging and the second flanging.

In one embodiment, the baffle and the protection plate are connected at a non-straight angle or a non-zero angle.

In one embodiment, the waveguide box structure further comprises a transition piece, one side of the transition piece is connected with the first box body at a non-flat angle or a non-zero angle, the other side of the transition piece is connected with the second box body at a non-flat angle or a non-zero angle, and the first enclosing plate and the second enclosing plate form the second gap at the transition piece.

In one embodiment, the fender is connected to and integrally formed with the transition piece.

In one embodiment, the first cover plate and the second cover plate are connected in an L shape.

A microwave oven comprises the waveguide box structure and a magnetron, wherein a microwave introducing port is formed in a first box body and communicated with a first channel; the magnetron is arranged at the microwave guide inlet.

According to the microwave oven and the waveguide box structure thereof, the first channel on the first box body is used for guiding in microwaves, and the microwaves are guided out through the second channel of the second box body. When the first box body and the second box body are connected, a first gap is formed between the connecting positions of the first cover plate and the second cover plate by the first flanging on the first box body and the second flanging on the second box body, the first gap can be communicated with the first channel and the second channel, and therefore microwaves in the first channel and the second channel are leaked to the external environment through the first gap. And the protection piece is covered on the first gap, and the two sides of the protection piece can be respectively connected with the first flanging and the second flanging, so that the protection piece is ensured to completely block the first gap, and the microwave is prevented from leaking to the outside from the waveguide box structure. The safety and the reliability of the waveguide box structure are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a microwave oven according to an embodiment;

FIG. 2 is a schematic structural diagram of a waveguide box structure in the embodiment of FIG. 1;

FIG. 3 is a schematic structural diagram of a waveguide box structure in the embodiment of FIG. 2;

FIG. 4 is an isometric view of the waveguide box structure in the embodiment of FIG. 3;

FIG. 5 is a schematic structural diagram of a first box and a second box in the embodiment of FIG. 1;

FIG. 6 is an isometric view of the first container and the second container of the embodiment of FIG. 5;

fig. 7 is a schematic diagram of a sheet metal part of the waveguide box structure in the embodiment of fig. 1.

The elements in the figure are labeled as follows:

10. a microwave oven; 100. a waveguide box structure; 110. a cover body; 111. a first cover plate; 112. a second cover plate; 113. a lead-out port; 120. a first case; 121. a first channel; 122. a first flanging; 123. a first base plate; 124. a first coaming; 125. an inlet port; 130. a second box body; 131. a second channel; 132. second flanging; 133. a second base plate; 134. a second enclosing plate; 140. a guard; 141. a baffle plate; 142. a protection plate; 150. a transition piece; 200. a magnetron.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, 2 and 4, a microwave oven 10 in one embodiment includes a waveguide box structure 100 and a magnetron 200. The waveguide box structure 100 includes a cover 110, a first box 120, a second box 130 and a protection part 140, wherein the cover 110 includes a first cover 111 and a second cover 112, and the first cover 111 and the second cover 112 are connected at a non-flat angle or a non-zero angle; the first cover plate 111 is covered on the first box body 120 and encloses a first channel 121, and a first flange 122 is arranged at the edge of an opening of the first box body 120 for connecting with the first cover plate 111; the first box body 120 is connected with the second box body 130, the second cover plate 112 is covered on the second box body 130 and encloses a second channel 131, the first channel 121 is communicated with the second channel 131, a second flanging 132 is arranged at the opening edge of the second box body 130 for connecting with the second cover plate 112, and a first gap is formed between the first flanging 122 and the second flanging 132 corresponding to the connection part of the first cover plate 111 and the second cover plate 112; the guard 140 covers the first gap and closes the first gap. The first box 120 is provided with a microwave introduction port 125. The microwave introduction port 125 communicates with the first channel 121 and the second channel 131. The magnetron 200 is disposed at the microwave introduction port 125. The cover plate is provided with a microwave outlet 113. The microwave guide-out port 113 communicates with the second channel 131. The microwave guide-out port 113 guides out the microwave.

The first passage 121 of the first pack 120 is used to guide microwaves, which are guided out through the second passage 131 of the second pack 130. When the first container 120 and the second container 130 are connected, the first flange 122 of the first container 120 and the second flange 132 of the second container 130 form a first gap between the connection points of the first cover 111 and the second cover 112, and the microwaves in the first channel 121 and the second channel 131 can leak to the external environment through the first gap. The shielding member 140 is disposed on the first gap, so as to ensure that the shielding member 140 completely blocks the first gap, and prevent the microwave from leaking from the inside of the waveguide box structure 100 to the outside. The safety and reliability of the waveguide box structure 100 is improved.

Specifically, the first gap can communicate with the first channel 121 and the second channel 131. The guard 140 is releasable from the first and second flanges 122, 132. As shown in fig. 2, a portion of the first cover 111 can abut on the first flange 122. A portion of the first cover plate 111 is connected to the first flange 122 by means of a bolt connection. A portion of the second cover 112 can abut against the second flap 132. A portion of the second cover plate 112 is connected to the second flange 132 by means of a bolt connection.

Specifically, as shown in fig. 2 and 3, the first cover plate 111 and the second cover plate 112 are connected in an "L" shape. Meanwhile, the first container 120 and the second container 130 are connected in an "L" shape. The first void is formed at a corner of the "L" shape. The connection angle of the first case 120 and the second case 130 is ninety degrees. Of course, the connection angle between the first box 120 and the second box 130 may be other degrees, and may be adjusted according to actual situations. The coupling angle between the first cover 111 and the second cover 112 may be identical to that of the first container 120 and the second container 130.

Referring to fig. 4 and 5, the first container 120 includes a first bottom plate 123 and a first enclosing plate 124, the first enclosing plate 124 is disposed along an edge of the first bottom plate 123, and the first enclosing plate 124 and the first bottom plate 123 enclose a first slot. The first cover plate 111 covers the first groove and forms a first channel 121. The first flange 122 is disposed on a side of the first enclosing plate 124 away from the first bottom plate 123, and the first flange 122 and the first enclosing plate 124 are connected at a non-flat angle or a non-zero angle. The first groove body is also provided with a first opening. Specifically, as shown in fig. 7, the first enclosing plate 124 is integrally formed on the first bottom plate 123. For example, the first enclosing plate 124 is integrally formed on the first bottom plate 123 by stamping or punching. The structural strength of the first box 120 can be improved by integrally forming the first enclosing plate 124 on the first bottom plate 123, so that the sealing performance of the first box 120 is ensured, and the manufacturing cost is reduced. Meanwhile, the first flange 122 is integrally formed on the first surrounding plate 124, and is connected with the first surrounding plate 124 in a non-straight angle or a non-zero angle in a bending manner.

Referring to fig. 5 and 6, in one embodiment, the second container 130 includes a second bottom plate 133 and a second enclosing plate 134, the second enclosing plate 134 is disposed along an edge of the second bottom plate 133, the second enclosing plate 134 and the second bottom plate 133 enclose a second slot, the second cover 112 covers the second slot and forms the second channel, the second flange 132 is disposed on a side of the second enclosing plate 134 away from the second bottom plate 133, and the second flange 132 and the second enclosing plate 134 are connected at a non-straight angle or a non-zero angle. A second opening is also formed on the second groove body. As shown in fig. 7, the second shroud 134 is integrally formed with the second base plate 133. The structural strength and the sealing property of the second case 130 can be improved, and the manufacturing cost can be reduced. Meanwhile, the second flange 132 is integrally formed on the second surrounding plate 134 and is connected with the second surrounding plate 134 in a non-straight angle or a non-zero angle by bending.

Referring to fig. 4, 6 and 7, in one embodiment, the second base plate 133 is connected to the first base plate 123 at a non-straight or non-zero angle. The first and second enclosure plates 124 and 134 form a second void at the junction of the first and second bottom plates 123 and 133. The second gap can communicate with the first channel 121, the second channel 131, and the first gap. The guard 140 is disposed at the connection of the first base plate 123 and the second base plate 133. A portion of the shielding member 140 may cover the first gap, and another portion of the shielding member 140 may cover the second gap. When the second gap is formed between the first enclosing plate 124 and the second enclosing plate 134, the shielding member 140 can cover the first gap and the second gap at the same time, and the sealing performance of the waveguide box structure 100 is ensured.

Further, as shown in fig. 7, the first base plate 123 is integrally formed on the second base plate 133. The first base plate 123 and the second base plate 133 are connected by bending to form a non-straight angle or a non-zero angle. The integrity and the structural strength of the waveguide box structure 100 are ensured, and the sealing performance of the waveguide box structure 100 is further improved.

In the present embodiment, as shown in fig. 5 and 7, the guard 140 is integrally formed at the connection of the first base plate 123 and the second base plate 133. The sealing performance of the shield 140 with respect to the first and second gaps is further improved, and the sealing performance of the waveguide box structure 100 is improved.

Specifically, as shown in fig. 3 and 7, the shield 140 includes a baffle 141 and a shielding plate 142. The guard plate 142 is connected at the junction of the first base plate 123 and the second base plate 133, the baffle plate 141 is connected on the guard plate 142, the guard plate 142 can be covered on the second gap, the two sides of the guard plate 142 are respectively contacted with the first enclosing plate 124 and the second enclosing plate 134, the baffle plate 141 can be covered on the first gap, and the two sides of the baffle plate 141 are respectively contacted with the first flanging 122 and the second flanging 132. The baffle 141 is covered on the first gap, and the protection plate 142 is covered on the second gap, so that the sealing effect of the protection member 140 is ensured. In another embodiment, both sides of the guard plate 142 are in substantial contact with the first and second shroud plates 124, 134, respectively. Alternatively, both sides of the baffle 141 are substantially in contact with the first and second flanges 122 and 132, respectively.

Further, as shown in fig. 3 and 4, the baffle 141 and the shielding plate 142 are connected at a non-straight angle or a non-zero angle. In an alternative embodiment, the connection angle between the baffle 141 and the guard 142 is the same as the connection angle between the first flange 122 and the first shroud 124. Or the connection angle of the baffle plate 141 and the protection plate 142 is consistent with the connection angle of the second flanging 132 and the second enclosing plate 134. The connection angle between the baffle 141 and the protection plate 142 and the connection angle between the first flange 122 and the first enclosing plate 124 are the same, so that the phenomenon that the baffle 141 and the protection plate 142 generate new gaps in the covering process to cause microwave leakage is avoided. The hermeticity and practicality of the waveguide box structure 100 are ensured. In the present embodiment, the baffle 141 and the guard plate 142 are disposed at a ninety-degree angle.

Referring to fig. 3-5, in one embodiment, the waveguide box structure 100 further includes a transition piece 150, one side of the transition piece 150 is connected to the first box 120 at a non-straight angle or a non-zero angle, the other side of the transition piece 150 is connected to the second box 130 at a non-straight angle or a non-zero angle, and the first and second enclosing plates 124 and 134 form a second gap at the transition piece 150. The transition piece 150 can ensure a larger bending range and rationality between the first box 120 and the second box 130, so that the waveguide box structure 100 can be more suitable for the microwave oven 10 body, and the practicability and reliability of the waveguide box structure 100 are improved. Meanwhile, the shielding plate 142 is connected to the transition piece 150 and is integrally formed on the transition piece 150. One side of the baffle 141 is attached to the transition piece 150. The transition piece 150 also provides a reasonable location for the shield 140 to be positioned, ensuring the rationality of the waveguide box structure 100.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may directly conflict with the first and second features, or the first and second features may indirectly conflict with each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. A waveguide box structure, comprising:

the cover body comprises a first cover plate and a second cover plate, and the first cover plate and the second cover plate are connected in a non-straight angle or a non-zero angle;

the first cover plate is covered on the first box body and forms a first channel in an enclosing mode, and a first flanging is arranged at the edge of an opening, used for being connected with the first cover plate, of the first box body;

the first box body is connected with the second box body, the second cover plate is covered on the second box body and encloses a second channel, the first channel is communicated with the second channel, a second flanging is arranged at the opening edge of the second box body, which is used for being connected with the second cover plate, and a first gap is formed between the first flanging and the second flanging at the joint corresponding to the first cover plate and the second cover plate;

a shield provided at the first gap and closing the first gap.

2. The waveguide box structure of claim 1, wherein the first box body comprises a first bottom plate and a first enclosing plate, the first enclosing plate is arranged along an edge of the first bottom plate, the first enclosing plate and the first bottom plate enclose a first groove body, the first enclosing plate is arranged on the first groove body in a covering mode and forms the first channel, the first flanging is arranged on one side, away from the first bottom plate, of the first enclosing plate, and the first flanging and the first enclosing plate are connected in a non-straight angle or a non-zero angle.

3. The waveguide box structure of claim 2, wherein the second box body comprises a second bottom plate and a second enclosing plate, the second enclosing plate is arranged along an edge of the second bottom plate, the second enclosing plate and the second bottom plate enclose a second groove body, the second enclosing plate is arranged on the second groove body in a covering mode and forms the second channel, the second flanging is arranged on one side, far away from the second bottom plate, of the second enclosing plate, and the second flanging and the second enclosing plate are connected in a non-straight angle or a non-zero angle.

4. The waveguide box structure of claim 3, wherein the second base plate and the first base plate are connected at a non-straight angle or a non-zero angle, the first and second enclosing plates form a second gap at the connection of the first and second base plates, the second gap can be communicated with the first channel, the second channel and the first gap, the shielding member is disposed at the connection of the first and second base plates, a portion of the shielding member can be disposed over the first gap, and another portion of the shielding member can be disposed over the second gap.

5. The waveguide box structure of claim 4, wherein the shielding member comprises a baffle plate and a protection plate, the protection plate is connected to the connection portion of the first bottom plate and the second bottom plate, the baffle plate is connected to the protection plate, the protection plate can be covered on the second gap, two sides of the protection plate are respectively in contact with or approximately in contact with the first surrounding plate and the second surrounding plate, the baffle plate can be covered on the first gap, and two sides of the baffle plate are respectively in contact with or approximately in contact with the first flange and the second flange.

6. The waveguide box structure of claim 5, wherein the baffle and the guard plate are connected at a non-straight or non-zero angle.

7. The waveguide box structure of claim 5, further comprising a transition piece, one side of the transition piece being connected to the first box at a non-straight or non-zero angle, the other side of the transition piece being connected to the second box at a non-straight or non-zero angle, the first and second enclosures forming the second void at the transition piece.

8. A waveguide box structure according to claim 7, wherein the guard plate is connected to and integrally formed with the transition piece.

9. The waveguide box structure of any one of claims 1 to 8, wherein the first and second cover plates are connected in an "L" shape.

10. A microwave oven, characterized in that the microwave oven comprises:

the waveguide box structure according to any one of claims 1 to 9, wherein the first box body is provided with a microwave introduction port, and the microwave introduction port is communicated with the first channel and the second channel; and

a magnetron disposed at the microwave guide entrance.

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