CN212115721U

CN212115721U - Microwave cooking equipment and magnetron heat abstractor and magnetron subassembly thereof

Info

Publication number: CN212115721U
Application number: CN202020517379.4U
Authority: CN
Inventors: 裴杰
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-12-08
Anticipated expiration: 2030-04-09

Abstract

The invention discloses microwave cooking equipment, a magnetron heat dissipation device and a magnetron assembly thereof, and relates to the technical field of magnetron cooling and heat dissipation. The magnetron heat dissipation device has the advantages of reasonable and compact structure, high heat dissipation efficiency, stable heat dissipation performance, convenient installation, suitability for installation with magnetrons of different specifications and good universality.

Description

Microwave cooking equipment and magnetron heat abstractor and magnetron subassembly thereof

Technical Field

The invention relates to the technical field of magnetron cooling and heat dissipation, in particular to microwave cooking equipment, a magnetron heat dissipation device and a magnetron assembly thereof.

Background

The magnetron is one of the main parts of the microwave oven, has important function in the application of the microwave oven, but the problem of temperature rise of the magnetron is always a great problem in the application, and brings great trouble to the use and the development of the microwave oven. The common solution to the problem of temperature rise in the magnetron is to use a fan and heat dissipation fins, but this method will greatly increase the volume of the magnetron and limit the installation position of the magnetron and other parts. The other method is to adopt a magnetron water-cooling heat dissipation device which realizes heat dissipation in a mode of combining cast aluminum and a water pipe channel, but the method brings problems of installation and cost, and simultaneously causes overlarge weight of the magnetron, can not realize civil use, has small heat exchange contact area and low heat exchange efficiency, can not realize high-efficiency heat exchange of the magnetron, and easily causes the condition of poor heat dissipation of the magnetron under the condition of low water flow.

Disclosure of Invention

The invention aims to provide novel microwave cooking equipment, a magnetron heat dissipation device and a magnetron component thereof.

In order to achieve the above object, the present invention provides a magnetron heat sink, which includes a hoop sleeve portion disposed around a magnetron, the hoop sleeve portion including a hollow annular heat exchange cavity, a heat dissipation medium inlet and a heat dissipation medium outlet communicating with the annular heat exchange cavity, and a circumferential adjustment opening for adapting to magnetrons of different tube diameters.

Further, the hoop sleeve portion may include a first circumferential end and a second circumferential end on either side of the circumferential adjustment opening, the first circumferential end having a first fastener attached thereto, the second circumferential end having a second fastener attached thereto, the first fastener and the second fastener being coupled to adjust the opening size of the circumferential adjustment opening.

Still further, the hoop sleeve portion may be a hollow tube collet and the first and second fasteners are abutting fastening mounting plates.

In some embodiments, the hoop sleeve portion may be a sheet assembly and include:

the annular heat exchange cavity is clamped between the inner sleeve plate and the outer sleeve plate;

an annular top cover plate closing the top end of the annular heat exchange cavity; and

and the annular bottom sealing cover plate is used for sealing the bottom end of the annular heat exchange cavity.

Alternatively, the inner sleeve plate and the outer sleeve plate may be integrally formed.

Optionally, the annular top cover plate, the annular bottom cover plate, the inner sleeve plate and the outer sleeve plate may be welded together.

Alternatively, the outer contour of the outer sleeve plate may be circular, elliptical or square.

Alternatively, the heat-dissipating medium inlet may be provided on a bottom outer peripheral wall of the ferrule sleeve portion, and the heat-dissipating medium outlet may be provided on a top outer peripheral wall of the ferrule sleeve portion.

In some embodiments, the heat dissipation medium inlet is disposed at a first circumferential end of the circumferential adjustment opening and the heat dissipation medium outlet is disposed at a second circumferential end of the circumferential adjustment opening.

In further exemplary embodiments, the heat dissipation medium inlet is arranged at a first circumferential end of the circumferential adjustment opening and/or at a second circumferential end of the circumferential adjustment opening, and the heat dissipation medium outlet is arranged at a radially opposite side with respect to the circumferential adjustment opening.

Correspondingly, the invention also provides a magnetron assembly which comprises a magnetron body and the magnetron heat dissipation device, wherein the hoop sleeve part is arranged around the anode of the magnetron body.

In addition, the invention also provides microwave cooking equipment which comprises the magnetron assembly.

The magnetron heat dissipation device comprises the hoop sleeve part arranged around the magnetron, the structure is reasonable and compact, the hoop sleeve part comprises the hollow annular heat exchange cavity, the heat exchange contact area between the hoop sleeve part and the magnetron is large, the heat exchange efficiency is high, the capacity of a heat dissipation medium which can be introduced into the annular heat exchange cavity is large, efficient heat dissipation can be realized even under the condition of low heat dissipation medium flow, and the heat dissipation performance is stable; in addition, the hoop sleeve portion further comprises a circumferential adjusting opening used for being matched with magnetrons with different pipe diameters, so that the magnetron heat dissipation device can be matched and installed with the magnetrons with different specifications, and the universality is good.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates a schematic structural view of a prior art magnetron assembly;

FIG. 2 is a schematic structural diagram of the magnetron heat sink in FIG. 1;

FIG. 3 illustrates a schematic structural diagram of a magnetron assembly in accordance with one embodiment of the invention;

FIG. 4 is a schematic structural diagram of the magnetron heat sink in FIG. 3;

FIG. 5 is a schematic view of another angle of the magnetron heat sink of FIG. 3;

fig. 6 is a schematic structural diagram of a magnetron heat sink according to another embodiment of the present invention.

Description of the reference numerals

1 hoop sleeve part 11 heat radiation medium inlet

12 circumferentially adjustable opening for outlet 13 of heat-dissipating medium

14 first circumferential end 141 first fastener

15 second circumferential end 151 second fastener

2 magnetron

Detailed Description

The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.

The magnetron heat sink 100 and the magnetron assembly according to the present invention will be described with reference to the accompanying drawings, wherein the magnetron heat sink 100 has a reasonable and compact structure, high heat dissipation efficiency, convenient installation, and good versatility, and can be adapted to magnetrons 2 of different specifications.

Referring to the magnetron heat dissipation device 100 of fig. 3 to 6, the magnetron heat dissipation device 100 includes a hoop sleeve portion 1 disposed around a magnetron 2, the hoop sleeve portion 1 includes a hollow annular heat exchange cavity, a heat dissipation medium inlet 11, a heat dissipation medium outlet 12 and a circumferential adjustment opening 13, the heat dissipation medium inlet 11 and the heat dissipation medium outlet 12 are respectively communicated with the annular heat exchange cavity, and the circumferential adjustment opening 13 is used for adapting to magnetrons with different pipe diameters.

As shown in fig. 1 and 2, the magnetron water-cooling heat dissipation device comprises a cast aluminum base and a water pipe channel, the cast aluminum base and the water pipe have large weight and volume, high cost, inconvenient installation and no civil use, and the cast aluminum base and the water pipe have small contact heat exchange area and low heat exchange efficiency. In addition, in the case of a low water flow rate, the magnetron is likely to have poor heat dissipation. In order to solve the above problems, the magnetron heat dissipation device 100 of the present invention includes the hoop sleeve portion 1 disposed around the magnetron 200, and has a reasonable and compact structure, the hoop sleeve portion 1 includes a hollow annular heat exchange cavity, the heat exchange contact area between the hoop sleeve portion 1 and the magnetron 200 is large, the heat exchange efficiency is high, and the capacity of the heat dissipation medium that can be received by the annular heat exchange cavity is large, so that the magnetron heat dissipation device can achieve efficient heat dissipation even under the condition of low heat dissipation medium flow, and the heat dissipation performance is stable. In addition, the hoop sleeve portion 1 further comprises a circumferential adjusting opening 13 for adapting to magnetrons 200 with different pipe diameters, so that the magnetron heat dissipation device 100 can be adapted to and mounted with magnetrons 200 with different specifications, and the universality is good.

Referring to the magnetron heat dissipation device 100 in fig. 3 to 6, the circumferential adjustment opening 13 axially penetrates through the cylinder wall of the hoop sleeve portion 1, the hoop sleeve portion 1 is sleeved on the outer circumferential wall of the magnetron 200 through the circumferential adjustment opening 13 to achieve convenient installation, the size of the opening of the circumferential adjustment opening 13 can be appropriately adjusted according to the pipe diameter of the magnetron 200, so that the magnetron heat dissipation device can be installed in a manner of being matched with magnetrons 200 of different specifications, and the magnetron heat dissipation device is good in universality. The heat dissipation medium enters the annular heat exchange cavity of the hoop sleeve portion 1 from the heat dissipation medium inlet 11 and flows out from the heat dissipation medium outlet 12, heat is taken away by the heat dissipation medium which continuously flows, and the purpose of temperature control is achieved, wherein the heat dissipation medium can be cooling liquid such as water.

Accordingly, as shown in fig. 3, the present invention also provides a magnetron assembly including a magnetron 200 and the magnetron heat sink 100 described above, with a hoop sleeve portion 1 disposed around an anode of a magnetron 2. In addition, the invention also provides a microwave cooking device which comprises the magnetron assembly, wherein the microwave cooking device can be a microwave oven, a microwave whole box and the like.

Alternatively, in order to allow the collar sleeve portion 1 to be stably installed and fixed to the magnetron 200, the collar sleeve portion 1 may include a first circumferential end 14 and a second circumferential end 15 on both sides of the circumferential adjustment opening 13, the first circumferential end 14 may be connected with a first fastening member 141, the second circumferential end 15 may be connected with a second fastening member 151, and the first fastening member 141 and the second fastening member 151 may be connected to adjust the opening size of the circumferential adjustment opening 13. As shown in fig. 4 to 6, the hoop sleeve portion 1 may be a hollow pipe jacket, the first fastening member 141 and the second fastening member 151 may be fastening mounting plates butted to each other, the fastening mounting plates may be provided with fastening member mounting holes, for example, fastening members such as screws and nuts may be used to perform reinforced mounting, and the fastening degree between the hoop sleeve portion 1 and the magnetron 200 may be adjusted by adjusting the tightness of the screws, so that the hoop sleeve portion 1 may be more closely attached to the anode of the magnetron 200, thereby maximally achieving a heat exchange function, and thus, the problem of temperature rise of the anode of the magnetron 200 may be effectively reduced.

The hoop sleeve portion 1 may be fastened by providing the first fastening member 141 and the second fastening member 151 at the first circumferential end 14 and the second circumferential end 15, or by additionally providing a hoop pipe clamp collar to the hoop sleeve portion 1, for example. In addition, the first fastening member 141 and the second fastening member 151 may also be not limited to fastening mounting plates, and the first fastening member 141 and the second fastening member 151 may also be snap-in detachable mounting structures that are matched with each other, but the invention is not limited thereto.

Further, in order to reduce the weight and volume of the magnetron heat sink 100, and reduce the manufacturing and logistics costs, the hoop sleeve portion 1 may be a plate assembly. The hoop sleeve part 1 can comprise an inner sleeve plate, an outer sleeve plate and an annular top sealing cover plate, the annular heat exchange cavity is clamped between the inner sleeve plate and the outer sleeve plate, and the annular top sealing cover plate and the annular bottom sealing cover plate respectively seal the top end and the bottom end of the annular heat exchange cavity. Alternatively, the annular top cover sealing plate, the annular bottom cover sealing plate, the inner sleeve plate and the outer sleeve plate can be welded, so that the magnetron heat dissipation device 100 of the invention has simple manufacturing process and low manufacturing cost.

Further, the inner and outer sleeve plates may be integrally formed, so that the manufacturing process and manufacturing cost of the magnetron heat sink 100 may be further simplified. The inner sleeve plate and the outer sleeve plate can be bent into a shape of a hollow annular heat exchange cavity by welding two ends of a square steel plate to form a closed ring; or the inner sleeve plate and the outer sleeve plate can be formed by bending a square steel plate into a shape with a hollow annular heat exchange cavity and then welding and sealing two ends of the square steel plate; alternatively, the inner sleeve plate and the outer sleeve plate may be directly formed integrally by an integrally formed profile with a hollow annular heat exchange cavity, and the invention is not limited thereto. Alternatively, the outer contour of the outer sleeve plate can be designed into a circular ring, an oval or a square shape according to the requirements of actual production or actual application.

When the anode temperature of the magnetron 200 is too high, the heat dissipation medium in the annular heat exchange cavity generates steam bubbles after heat exchange, so that the flow path of the heat dissipation medium is discontinuous, and the heat exchange efficiency of the steam bubbles is lower than that of the liquid heat dissipation medium, thereby causing the magnetron heat dissipation device 100 to have unstable heat exchange. Alternatively, as shown in fig. 3 to 5, the heat dissipation medium outlet 12 is disposed on the outer peripheral wall of the top of the hoop sleeve portion 1, so that steam bubbles generated during the heat exchange process will automatically rise to the upper portion of the annular heat exchange cavity and be discharged from the heat dissipation medium outlet 12, so that the total amount of the heat dissipation medium in the annular heat exchange cavity is kept stable, and the heat exchange performance of the magnetron heat dissipation apparatus 100 is more stable and reliable. In addition, the heat dissipation medium inlet 11 can be arranged on the outer peripheral wall of the bottom of the hoop sleeve portion 1, so that the heat dissipation medium flows in from the heat dissipation medium inlet 11 at the bottom of the annular heat exchange cavity and flows out from the heat dissipation medium outlet 12 at the top, and the relative position of the heat dissipation medium inlet 11 is lower than that of the heat dissipation medium outlet 12, so that the flowing stroke of the heat dissipation medium is longer, the heat exchange time of the heat dissipation medium is prolonged, and the heat exchange effect is better. The experiment of the inventor proves that the magnetron heat dissipation device 100 can stabilize the temperature rise of the anode of the 800W magnetron 200 at 300 ℃ and has good heat dissipation effect.

In some embodiments, as shown in fig. 6, in order to further increase the flow path of the heat dissipation medium and increase the heat exchange time of the heat dissipation medium, the hoop sleeve portion 1 may include a first circumferential end 14 and a second circumferential end 15 located at both sides of the circumferential adjustment opening 13, the heat dissipation medium inlet 11 is disposed at the first circumferential end 14, and the heat dissipation medium outlet 12 is disposed at the second circumferential end 15.

Of course, besides the arrangement of fig. 6, in other embodiments, as shown in fig. 4, the hoop sleeve portion 1 may also include a first circumferential end 14 and a second circumferential end 15 located at two sides of the circumferential adjustment opening 13, the heat dissipation medium inlet 11 is arranged at the first circumferential end 14 and/or the second circumferential end 15, and the heat dissipation medium outlet 12 is arranged at the other radial side relative to the circumferential adjustment opening 14, which is not limited to this. Further, as shown in fig. 3 to 6, the heat radiating medium inlet 11 and the heat radiating medium outlet 12 may also be formed as short pipes protruding radially outward, thereby facilitating installation with the pipes.

In summary, the present invention provides a magnetron heat dissipation apparatus 100, and the magnetron heat dissipation apparatus 100 has a reasonable and compact structure, high heat dissipation efficiency, convenient installation, and good versatility, and can be adapted to magnetrons 200 of different specifications. In addition, the magnetron heat dissipation device 100 of the invention has simple structure, low manufacturing cost and stable and reliable heat exchange performance.

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 invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

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 such 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 expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; 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 be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The magnetron heat dissipation device is characterized by comprising a hoop sleeve part arranged around a magnetron, wherein the hoop sleeve part comprises a hollow annular heat exchange cavity, a heat dissipation medium inlet and a heat dissipation medium outlet which are communicated with the annular heat exchange cavity, and a circumferential adjusting opening for adapting to magnetrons with different pipe diameters.

2. The magnetron heat sink of claim 1 wherein the collar sleeve portion includes a first circumferential end and a second circumferential end on opposite sides of the circumferential adjustment opening, the first circumferential end having a first fastener attached thereto and the second circumferential end having a second fastener attached thereto, the first fastener and the second fastener being coupled to adjust the size of the opening of the circumferential adjustment opening.

3. The magnetron heat sink of claim 2 wherein said hoop sleeve portion is a hollow tube jacket and said first and second fasteners are abutting fastening mounting plates.

4. The magnetron heat sink of claim 2 wherein the collar sleeve portion is a sheet assembly and comprises:

5. The magnetron heat sink of claim 4 wherein said inner sleeve plate and said outer sleeve plate are integrally formed.

6. The magnetron heat sink of claim 4 wherein the annular top blanking plate, the annular bottom blanking plate, the inner sleeve plate and the outer sleeve plate are welded together.

7. The magnetron heat sink of claim 4 wherein the outer contour of the outer jacket plate is circular, elliptical or square.

8. The magnetron heat sink according to any one of claims 1 to 7, wherein the heat dissipation medium inlet is provided on a bottom outer peripheral wall of the collar sleeve portion, and the heat dissipation medium outlet is provided on a top outer peripheral wall of the collar sleeve portion.

9. The magnetron heat sink of claim 8 wherein the heat sink media inlet is disposed at a first circumferential end of the circumferential adjustment opening and the heat sink media outlet is disposed at a second circumferential end of the circumferential adjustment opening.

10. The magnetron heat sink of claim 8, wherein the heat sink medium inlet is disposed at a first circumferential end of the circumferential adjustment opening and/or a second circumferential end of the circumferential adjustment opening, and the heat sink medium outlet is disposed at a radially opposite side with respect to the circumferential adjustment opening.

11. A magnetron assembly comprising a magnetron and a magnetron heat sink as claimed in any one of claims 1 to 10, the collar sleeve portion being disposed around an anode of the magnetron.

12. A microwave cooking apparatus, characterized in that the microwave cooking apparatus comprises a magnetron assembly according to claim 11.