Wave guide device for microwave oven

Abstract

The utility model discloses a wave guide device for a microwave oven, which comprises an electric control board, a magnetron and a wave guide box, the magnetron is arranged on an inner container of the microwave oven, the electric control board is arranged on one side of the inner container of the microwave oven and is electrically connected with the magnetron, the wave guide box is fixedly connected with one side of the inner container to form a wave guide cavity, a radio frequency output end is arranged on one side of the magnetron, and the radio frequency output end is electrically connected with the magnetron. The radio frequency output end is located in the wave guide cavity, a wave guide piece is arranged on the inner wall of the side, away from the inner container, of the wave guide box, the inner container is provided with a microwave inlet corresponding to the wave guide piece, and a mica sheet is arranged in the microwave inlet. When the microwave oven works, microwaves generated by the radio frequency output end are reflected by the wave guide piece and the inner wall of the wave guide box, penetrate through the mica sheet of the microwave inlet of the inner container, enter the inner container and heat food in the inner container, and due to the arrangement of the wave guide piece, the microwave energy distribution range is wide, energy accumulation at the tail end of the microwaves is reduced, and the microwave oven is energy-saving and environment-friendly. The food heating effect is greatly improved, and it is guaranteed that food is evenly heated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the microwave oven equipment technical field, concretely relates to waveguide device for microwave oven. BACKGROUND

[0002] The microwave oven is the cooking utensil that utilizes food in microwave field absorbs microwave energy and makes oneself heat. The microwave that microwave oven microwave generator produces establishes the microwave electric field in microwave oven cavity, and takes certain measure to make this microwave electric field as far as possible even distribution in the oven cavity, puts the food into the microwave electric field, controls its cooking time and microwave electric field intensity by control center, carries out various cooking process.

[0003] The microwave oven in the heating process, the magnetron produces the microwave through the metal inner wall of the waveguide box reflection to the inner way and carries out the heating to the food, but, the microwave of prior art to waveguide box concentrates and leads to the food heating efficiency bottom and the uneven heating. UTILITY MODEL CONTENTS

[0004] The utility model discloses a waveguide device for microwave oven, through installing the waveguide box in the inner bag one side of magnetron radio frequency output end, and setting the waveguide piece in the waveguide box corresponding radio frequency output end, the waveguide cavity is formed between the waveguide box and the inner bag, and the radio frequency output end is located in the waveguide cavity, when the microwave oven works, the microwave of radio frequency output end passes through the reflection of waveguide piece and waveguide box inner wall, and passes through the mica sheet of inner bag microwave entry port and enters the inner bag, heats the food in the inner bag, and the setting of waveguide piece makes the microwave energy distribution range wide, reduces the microwave end energy accumulation, and the heating effect of food is greatly improved, and the food heating is uniform.

[0005] In order to solve above-mentioned technical problem, the utility model adopts following technical scheme:

[0006] The utility model provides a waveguide device for microwave oven, including electric control board and magnetron, the magnetron is located microwave oven inner bag on one side, and the electric control board is located microwave oven inner bag one side, and the electric control board is electrically connected with magnetron, still including waveguide box, waveguide box fixedly connected in the inner bag one side forms waveguide chamber, one side of magnetron is equipped with radio frequency output end, and the radio frequency output end is located in waveguide chamber, and the inner wall on the side of waveguide box away from the inner bag is equipped with waveguide piece, and the inner bag corresponds waveguide piece and is equipped with microwave entrance, and the microwave entrance is equipped with mica piece, the utility model discloses a waveguide box is installed on the side of inner bag in the radio frequency output end of magnetron, and the waveguide piece is set up in the waveguide box corresponding radio frequency output end, and the waveguide chamber is formed between waveguide box and inner bag, and the radio frequency output end is located in waveguide chamber, when microwave oven works, the microwave of radio frequency output end passes through the reflection of waveguide piece and waveguide box inner wall and passes through the mica piece in the microwave entrance of inner bag and enters the inner bag, heats the food in the inner bag, and the setting of waveguide piece makes microwave energy distribution range wide, reduces microwave end energy accumulation, greatly improves the heating effect of food, and ensures that food heating is uniform.

[0007] Further, the waveguide piece is a semicircular steel ball. The curved surface structure of the semicircular steel ball forms multi-angle reflection after the microwave generated by the radio frequency output end is incident on the surface of the semicircular steel ball, breaking through the limitation of the single reflection path of the traditional planar waveguide box. Through the scattering effect, the microwave energy distribution range is wider, the waveguide end energy accumulation is reduced, the food heating is uniform, and the food heating efficiency is improved.

[0008] Further, the bottom of the side of the waveguide box away from the inner bag is provided with a sandwich layer. By providing the sandwich layer, the energy escape or invalid scattering of the microwave during transmission in the waveguide box is reduced, and the transmission efficiency of the microwave from the magnetron to the inner bag is improved. The sandwich layer also has a shielding effect, which limits the diffusion of the microwave to non-target areas through multi-stage reflection, reduces the potential harm of microwave leakage to the human body and the environment, and at the same time, due to the provision of the waveguide piece, heat will accumulate at the bottom of the side of the waveguide away from the inner bag, and the sandwich layer also has a heat insulation effect.

[0009] Further, the outer side wall of the sandwich layer is provided with a heat dissipation hole. The heat dissipation hole accelerates the transfer of heat from the sandwich layer to the outside, avoids overheating of the components caused by accumulation of heat in the sandwich layer, promotes the formation of convection between the sandwich layer and the external environment, improves the heat exchange efficiency, reduces the operating temperature of the core components such as the magnetron, and at the same time, the heat dissipation hole reduces the probability of standing wave formation by destroying the symmetry of the microwave reflection path, thereby reducing the abnormal aggregation of microwave energy in a specific area.

[0010] Further, it further includes a choke groove plate, and the choke groove plate is arranged in the microwave oven door body. The choke groove plate is arranged in the microwave oven door body to scatter the microwave transmitted to the door body back into the inner bag, and also has a shielding effect of the microwave, which limits the diffusion of the microwave to non-target areas through multi-stage reflection, reduces the potential harm of microwave leakage to the human body and the environment.

[0011] Furthermore, one side of the electronic control board is fixedly connected to one side of the inner liner via a mounting bracket. The mounting bracket is provided for the fixed installation of the electronic control board.

[0012] Furthermore, the mounting base adopts a metal structure. This metal structure ensures the structural strength of the mounting base, improves its service life, and enhances its microwave reflection capability, reducing the possibility of microwaves penetrating to the control board area and preventing microwave interference with electronic components or potential safety hazards.

[0013] Furthermore, a choke groove is provided on the side of the mounting base near the inner liner. This choke groove design utilizes the principle of microwave reflection to reflect microwave energy from the connection between the control board mounting base and the inner liner back into the furnace cavity. This reduces the risk of microwave leakage from the mounting base gaps into the control area, preventing interference with electronic components or safety hazards. It also improves the absorption and reflection efficiency of high-frequency electromagnetic waves, ensuring a stable operating environment for the control board. Furthermore, by suppressing microwave leakage, the choke groove reduces energy loss, increases the utilization rate of microwave energy within the inner liner, and reduces the load pressure on the magnetron. Simultaneously, it avoids the thermal effects of microwaves on the control board components, extending the equipment's service life.

[0014] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0015] This invention involves installing a waveguide box on one side of the inner liner located at the RF output end of the magnetron, and setting a waveguide component at the corresponding RF output end of the waveguide box. A waveguide cavity is formed between the waveguide box and the inner liner, with the RF output end located inside the waveguide cavity. When the microwave oven is operating, the microwaves generated at the RF output end are reflected by the waveguide component and the inner wall of the waveguide box, passing through the mica sheet at the microwave inlet of the inner liner and entering the inner liner to heat the food inside. The setting of the waveguide component results in a wide distribution range of microwave energy, reduces energy accumulation at the microwave end, greatly improves the heating effect of the food, and ensures uniform heating of the food.

[0016] This invention utilizes a semi-circular steel sphere as the waveguide component. The curved surface structure of the semi-circular steel sphere allows microwaves generated at the RF output end to be reflected at multiple angles upon impact, overcoming the limitation of a single reflection path in traditional planar waveguide boxes. Through scattering effects, the microwave energy distribution is wider, reducing energy accumulation at the waveguide end, resulting in more uniform food heating and improved heating efficiency.

[0017] The bottom of the waveguide box far from the inner container is provided with a sandwich layer.The sandwich layer reduces the energy escape or invalid scattering of microwaves in the transmission process of the waveguide box, improves the transmission efficiency of microwaves from the magnetron to the inner container, and has a shielding effect, limits the diffusion of microwaves to non-target areas through multi-stage reflection, and reduces the potential harm of microwave leakage to the human body and the environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model makes further explanation in connection with the drawings:

[0019] Figure 1 It is the structure schematic diagram of microwave oven in the utility model;

[0020] Figure 2 It is the structure schematic diagram of microwave oven in the utility model; Figure 1 It is the section of A-A in the utility model;

[0021] Figure 3 It is the section of B-B in the utility model; Figure 1

[0022] Figure 4 It is the section of C-C in the utility model; Figure 1

[0023] Figure 5 It is the structure schematic diagram of microwave oven in the utility model;

[0024] Figure 6 It is the structure schematic diagram of microwave oven in the utility model;

[0025] Figure 7 It is the structure schematic diagram of microwave oven in the utility model;

[0026] In the drawing, 1-electronic control board;2-magnetron;3-microwave oven;4-inner container;5-waveguide box;6-waveguide cavity;7-shoot radio frequency output end;8-microwave inlet;9-mica sheet;10-semicircle steel ball;11-sandwich layer;12-radiating hole;13-choking groove plate;14-mounting seat;15-choking groove. DETAILED DESCRIPTION

[0027] As Figures 1 to 7 ​As shown, the utility model microwave oven waveguide device, including electric control board 1 and magnetron 2, magnetron 2 is located microwave oven 3 inner container 4, electric control board 1 is located microwave oven 3 inner container 4 one side, electric control board 1 with magnetron 2 electric connection, still including waveguide box 5, waveguide box 5 fixedly connected in inner container 4 one side and forms waveguide cavity 6, one side of magnetron 2 is equipped with radio frequency output end 7, and radio frequency output end 7 is located in waveguide cavity 6, and waveguide box 5 is equipped with waveguide piece on the inner wall of the side away from inner container 4, and inner container 4 is equipped with microwave inlet 8 corresponding waveguide piece, and microwave inlet 8 is equipped with mica sheet 9.

[0028] Waveguide piece adopts semicircular steel ball 10. The curved surface structure of the semicircular steel ball, the microwave generated by the radio frequency output end 7 is reflected at multiple angles after being incident on the surface of the semicircular steel ball 10, breaking through the limitation of the single reflection path of the traditional plane waveguide box 5, and through the scattering effect, the microwave energy distribution range is wider, the waveguide end energy accumulation is reduced, the food heating is uniform, and the food heating efficiency is improved.

[0029] The bottom of the side of the waveguide box 5 away from the inner container 4 is provided with a sandwich layer 11. By setting the sandwich layer 11, the energy escape or invalid scattering of the microwave in the transmission process of the waveguide box 5 is reduced, and the transmission efficiency of the microwave from the magnetron 2 to the inner container 4 is improved; the sandwich layer 11 also has a shielding effect, which limits the diffusion of microwave to non-target areas through multi-stage reflection, reduces the potential harm of microwave leakage to the human body box environment; at the same time, due to the setting of the waveguide piece, heat will accumulate at the bottom of the side of the waveguide away from the inner container 4, and the sandwich layer 11 also has a heat insulation effect. The outer side wall of the sandwich layer 11 is provided with a heat dissipation hole 12. The heat is transferred from the sandwich layer 11 to the outside to avoid the accumulation of heat in the sandwich layer 11, which causes the overheating of the components; at the same time, the convection between the sandwich layer 11 and the external environment is promoted, the heat exchange efficiency is improved, the operating temperature of the core components such as the magnetron 2 is reduced, and the heat dissipation hole 12 reduces the probability of standing wave formation by destroying the symmetry of the microwave reflection path, thereby reducing the abnormal aggregation of microwave energy in a specific area.

[0030] It also includes a choke groove plate 13, and the choke groove plate 13 is arranged in the door body of the microwave oven 3. The choke groove plate 13 is arranged in the door body of the microwave oven 3, which scatters the microwave transmitted to the door body back to the inner container 4 through the choke groove plate 13, and also has a shielding effect of microwave, which limits the diffusion of microwave to non-target areas through multi-stage reflection, reduces the potential harm of microwave leakage to the human body box environment.

[0031] The electric control board 1 is fixedly connected to one side of the inner container 4 through a mounting seat 14. The mounting seat 14 is arranged to fix the electric control board 1. The mounting seat 14 is made of metal structure. The metal structure ensures the structural strength of the mounting seat 14, prolongs the service life, enhances the reflection of microwaves, reduces the possibility of microwave penetration to the area of the electric control board 1, and prevents the microwave from interfering with the electronic components or causing safety hazards. The mounting seat 14 is provided with a choke groove 15 near the side of the inner container 4. The choke groove 15 is designed to reflect the microwave energy at the connection between the mounting seat 14 of the electric control board 1 and the inner container 4 back to the inside of the furnace cavity by using the principle of microwave reflection, reduces the risk of microwave leakage from the gap of the mounting seat 14 to the electric control area, prevents interference with electronic components or causes safety hazards, improves the absorption and reflection efficiency of high-frequency electromagnetic waves, ensures the stable working environment of the electric control board 1, and reduces energy loss by suppressing microwave leakage, improves the utilization rate of microwave energy in the inner container 4, reduces the load pressure of the magnetron 2, and avoids the influence of the thermal effect of microwaves on the components of the electric control board 1, prolongs the service life of the equipment.

[0032] The utility model discloses a microwave oven, which comprises a microwave oven body, a magnetron, an inner container, an electric control board and a choke groove.

[0033] The above is only a specific embodiment of the utility model, but the technical features of the utility model are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the utility model to solve the same technical problem and achieve the same technical effect is included in the protection scope of the utility model.

Claims

1. A wave guide device for microwave oven, comprising an electric control board and a magnetron, the magnetron is arranged on an inner container of the microwave oven, The electric control board is arranged on one side of the inner container of the microwave oven, and the electric control board is electrically connected with the magnetron. Further comprising a wave guide box, the wave guide box is fixedly connected on one side of the inner container to form a wave guide cavity, one side of the magnetron is provided with a radio frequency output end, the radio frequency output end is located in the wave guide cavity, a wave guide part is arranged on an inner wall of the side of the wave guide box away from the inner container, the inner container is provided with a microwave inlet opening corresponding to the wave guide part, a mica sheet is arranged in the microwave inlet opening.

2. The wave guide for a microwave oven according to claim 1, wherein: The wave guide part adopts a semi-circular steel ball.

3. The wave guide for a microwave oven according to claim 1, wherein: A sandwich layer is arranged on the bottom of the side of the wave guide box away from the inner container.

4. The wave guide for a microwave oven according to claim 3, wherein: A heat dissipation hole is arranged on an outer wall of the sandwich layer.

5. The wave guide for a microwave oven as claimed in claim 1, wherein: Further comprising a choke groove plate, the choke groove plate is arranged in a door body of the microwave oven.

6. The wave guide for a microwave oven according to claim 3, wherein: One side of the electric control board is fixedly connected on one side of the inner container through a mounting seat.

7. The wave guide for a microwave oven according to claim 6, wherein: The mounting seat adopts a metal structure.

8. The wave guide for a microwave oven according to claim 6, wherein: A choke groove is arranged on the side of the mounting seat close to the inner container.

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