High-power-density fully-sealed microwave generator

Abstract

The embodiment of the utility model provides a high-power-density fully-sealed microwave generator, and belongs to the technical field of microwave generators. The microwave generator comprises a microwave head cabinet body which is used for defining an accommodating space; the magnetron assembly is arranged in the microwave head cabinet body; the condenser is arranged on the lateral upper portion of the magnetron assembly, a fan is arranged on the condenser to extract hot air generated by the magnetron assembly, and a water inlet and a water outlet of the condenser are connected with an external water path through pipelines to cool the hot air generated by the magnetron assembly; the cooling fan is arranged on the side wall adjacent to or opposite to the condenser and arranged above the magnetron assembly so as to extract air cooled by the condenser and blow the air to the magnetron assembly. According to the overall structure of the microwave generator, an external air inlet and outlet of a microwave head in the microwave generator are omitted, so that dust or moisture in external air is prevented from entering the microwave head.

Description

Technical Field

[0001] This utility model relates to the field of microwave generator technology, and specifically to a high power density fully sealed microwave generator. Background Technology

[0002] In a microwave generator system, the magnetron inside the microwave head is a key component for microwave output. Forced air cooling is required for the cathode lead and output end of the magnetron, while water cooling is used for the tube body. The magnetron has high environmental requirements. Air cooling necessitates external air vents and exhaust ducts for air circulation. This is typically achieved by adding dust covers or filters. While ensuring the air vents are open, care must be taken to prevent microwave leakage. Therefore, this approach usually affects the airflow, requiring a larger fan for cooling, thus increasing the size of the microwave head. Without protective measures, dust or moisture from the outside air can enter the microwave head, adhering to the surface of the magnetron's cathode lead and output end or entering the excitation cavity, easily causing magnetron arcing. This significantly reduces the magnetron's lifespan and increases operating costs. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a high power density fully sealed microwave generator. The overall structure of this microwave generator eliminates the external air inlet and outlet of the microwave head to prevent dust or moisture in the outside air from entering the microwave head.

[0004] To achieve the above objectives, this utility model provides a high power density fully sealed microwave generator, the microwave generator comprising:

[0005] Microwave head cabinet, used to enclose a storage space;

[0006] The magnetron assembly is housed within the microwave head cabinet.

[0007] A condenser is installed on the side wall of the microwave head cabinet and above the magnetron assembly. The condenser is equipped with a fan to extract the hot air generated by the magnetron assembly. The inlet and outlet of the condenser are connected to an external water system through pipes to cool the hot air generated by the magnetron assembly.

[0008] A cooling fan is installed on a side wall adjacent to or opposite to the condenser and above the magnetron assembly to draw in the cooled air from the condenser and blow it toward the magnetron assembly.

[0009] Optionally, the magnetron assembly includes:

[0010] The excitation cavity is located inside the microwave head cabinet;

[0011] An electromagnet is disposed at the top of the excitation chamber;

[0012] The magnetron is located inside the electromagnet;

[0013] The electromagnet and the magnetron are each equipped with an internal water circuit component, which is connected to an external water circuit to cool the electromagnet and the magnetron with water.

[0014] Optionally, the microwave generator includes a heat sink connected to the condenser and the internal water circuit components for heat dissipation and cooling.

[0015] Optionally, the heat sink is disposed within the microwave head cabinet and separated into different installation spaces by a partition and the magnetron assembly, the partition being sealed to the microwave head cabinet via shielding cotton; and / or

[0016] The radiator is a plate heat exchanger.

[0017] Optionally, the outlet of the cooling fan's duct is rectangular; and / or

[0018] The outlet of the cooling fan duct faces the magnetron assembly, so as to force the airflow to directionally cool the cathode heat sink of the magnetron assembly.

[0019] Optionally, the microwave generator includes a high-voltage isolation transformer disposed on the side of the magnetron assembly and connected to the magnetron assembly and an external power supply to provide high-voltage isolation for the magnetron assembly.

[0020] Optionally, the microwave head cabinet includes a cabinet frame and a sealed door panel, and electromagnetic shielding cotton is installed at the contact position between the cabinet frame and the sealed door panel.

[0021] Optionally, the fan in the condenser blows air onto the side wall of the microwave head cabinet.

[0022] Optionally, the cooling fan is installed at the same height as the condenser; and / or

[0023] The cooling fan and the condenser are spaced apart along the length and / or width of the microwave head cabinet.

[0024] Optionally, the cooling fan is a centrifugal fan; and / or

[0025] The condenser is a finned condenser.

[0026] Through the above technical solution, this utility model provides a high-power-density, fully sealed microwave generator with a microwave head cabinet, which can be enclosed to form a housing space. A magnetron assembly can also be installed inside the microwave head cabinet. The condenser can be installed on the side wall of the microwave head cabinet and above the magnetron assembly. A fan can be installed on the condenser to extract the hot air generated by the magnetron assembly. The inlet and outlet of the condenser can be connected to an external water system through pipes, thereby forming a water circulation to cool the hot air generated by the magnetron assembly. The cooling fan can be installed on the side wall adjacent to or opposite the condenser and above the magnetron assembly, thereby extracting the cooled air from the condenser and blowing it onto the magnetron assembly to cool it. The overall structure of this microwave generator eliminates the external air inlet and outlet of the microwave head, thus preventing dust or moisture from the outside air from entering the microwave head.

[0027] Other features and advantages of this utility model embodiment will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a microwave head cabinet outline drawing of a high power density fully sealed microwave generator according to one embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal heat dissipation element of a high power density fully sealed microwave generator according to one embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of a condenser assembly of a high power density fully sealed microwave generator according to one embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of a cooling fan for a high-power-density, fully sealed microwave generator according to one embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the cooling of the magnetron assembly of a high power density fully sealed microwave generator according to one embodiment of the present invention;

[0034] Figure 6This is a schematic diagram of the cooling water circuit of a high power density fully sealed microwave generator according to one embodiment of the present invention;

[0035] Figure 7 This is a top view illustrating the internal wind direction of a high-power-density, fully sealed microwave generator according to one embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures

[0037] 1. Microwave head cabinet 2. Magnetron assembly

[0038] 3. Condenser 4. Cooling fan

[0039] 5. Excitation cavity 6. Electromagnet

[0040] 7. Magnetron 8. High-voltage isolation transformer

[0041] 9. Internal water system components 10. Radiator Detailed Implementation

[0042] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0043] Figure 1 This is a view of the microwave head cabinet of a high power density fully sealed microwave generator according to one embodiment of the present invention. Figure 2 This is a schematic diagram of the internal heat dissipation elements of a high-power-density, fully sealed microwave generator according to one embodiment of the present invention. In this invention, the microwave generator may include: a microwave head cabinet 1, a magnetron assembly 2, a condenser 3, and a cooling fan 4. The microwave head cabinet 1 serves to enclose a receiving space. The magnetron assembly 2 can be disposed within the microwave head cabinet 1 and can be disposed within the microwave head cabinet 1 to generate microwaves. The condenser 3 can be disposed on the side wall of the microwave head cabinet 1 and can be disposed above and to the side of the magnetron assembly 2. The condenser 3 may be equipped with a fan to draw in the hot air generated by the magnetron assembly 2 and pass it through the condenser 3. The inlet and outlet of the condenser 3 can be connected to an external water system through pipes to cool the hot air generated by the magnetron assembly passing through the condenser 3. Figure 3As shown, the condenser 3 can be air-cooled and water-cooled. When high-temperature, high-pressure hot air flows through the condenser 3, the condenser 3 absorbs heat and transfers it to the cooling pipes. The heat is quickly removed by the water inside the cooling pipes, thus cooling the exterior. At the same time, a fan is installed on the condenser to accelerate the circulation of the heat generated inside, thereby reducing the internal temperature rise of the microwave head and achieving cooling circulation. The magnetron assembly 2 generates heat during operation. Hot air has a lower density and tends to rise. Therefore, the condenser 3 is placed in the space above the magnetron assembly 2. Since the magnetron assembly 2 operates in a high-pressure environment, the condenser 3 needs to maintain a certain safe distance from the magnetron assembly 2 and ensure reliable installation. Therefore, it can be fixed with stainless steel sheet metal to ensure the stability of the condenser 3 during operation. This layout makes reasonable use of a gradient layout to guide the directional transfer of heat, so that the heat dissipation capacity and heat source distribution are dynamically matched. It achieves directional heat dissipation and balanced distribution in a limited space, solving the problems of uneven internal temperature and local overheating. The cooling fan 4 can be installed on the side wall of the microwave head cabinet 1 adjacent to or opposite the condenser 3, and can be installed above the magnetron assembly 2, so as to draw in the air cooled by the condenser 3 and blow it onto the magnetron assembly 2, thereby cooling the magnetron assembly 2. Figure 2 As shown, the cooling fan 4 is installed on the side wall of the microwave head cabinet 1 adjacent to the condenser 3. It draws in air cooled by the condenser 3 and blows it towards the magnetron assembly 2. The cooling fan 4 and the condenser 3 can form an airflow circulation path, such as... Figure 7 As shown, after the hot air is cooled by the condenser 3, it moves to both sides of the inner wall of the microwave head cabinet 1. Then, the cooling fan 4 on the side wall can draw the cooled air and blow it toward the magnetron assembly 2 to cool the magnetron assembly 2. The heated air can also be drawn back into the condenser 3 for cooling.

[0044] In one embodiment of this utility model, such as Figure 2 and Figure 5As shown, the magnetron assembly 2 may include: an excitation chamber 5, an electromagnet 6, a magnetron 7, and an internal water channel component 9. The excitation chamber 5 can be located inside the microwave head cabinet 1. The electromagnet 6 can be located on top of the excitation chamber 5. The magnetron 7 can be located inside the electromagnet 6. The electromagnet 6 provides a magnetic field to the magnetron 7, which can be installed inside the electromagnet 6. Internal water channel components 9 can be respectively installed inside the electromagnet 6 and the magnetron 7. These internal water channel components 9 can be connected to external water channels to form a water circulation system, thereby cooling the electromagnet 6 and the magnetron 7. The internal water channel component 9 can be composed of various water pipes, and coolant can flow through it. The coolant can be cold water or other liquids with cooling properties. When the magnetron assembly 2 generates a large amount of heat during operation, the internal water channel component 9 can circulate coolant to carry away the heat from the magnetron assembly 2, thus achieving a cooling effect.

[0045] In one embodiment of this utility model, such as Figure 2 and Figure 6 As shown, the microwave generator may include a radiator 10. The radiator 10 can be connected to the condenser 3 and the internal water circuit component 9, thereby providing cooling. Compared to the traditional external cooling unit for microwave heads, this application adopts an internal heat exchange circulation method. The radiator 10 is installed inside the microwave head cabinet 1. The radiator 10 can be water-cooled. The internal water pipes of the microwave head are installed inside the cabinet. Only a main water inlet and outlet need to be reserved externally to achieve the cooling effect. Furthermore, the main water inlet and outlet use standard flange interfaces, which facilitates installation and use while solving the problems of cluttered external water circuits and the inability to move the device, making the microwave head an integrated unit that is easy to install and use.

[0046] In one embodiment of this utility model, such as Figure 2As shown, the heat sink 10 can be installed inside the microwave head cabinet 1 and can be separated from the magnetron assembly 2 by a partition in a different installation space. The partition can be sealed to the microwave head cabinet 1 using shielding cotton. The heat sink 10 and the magnetron assembly 2 are physically separated, forming an isolated space to prevent the heat sink 10 from absorbing or releasing heat during operation, which could cause a localized temperature rise. After physical isolation, the heat exchange process of the heat sink 10 and the heat dissipation of the magnetron assembly 2 do not interfere with each other, ensuring that both are within their optimal temperature range. This avoids thermal interference to a certain extent, ensures a certain degree of water and electricity separation, and prevents water leakage from the heat sink 10 from damaging electrical components. Furthermore, to a certain extent, the heat sink 10 can be added separately to the microwave head cabinet 1 or removed independently from it. The heat sink 10 can take various forms; in this application, the heat sink 10 can be a plate heat exchanger for better heat exchange. The plate heat exchanger is water-cooled. This heat exchanger features a compact structure, effectively saving space. The plate radiator design creates intense turbulence in the fluid, disrupting the boundary layer and significantly improving the heat transfer coefficient, thus achieving a cooling effect. Cooling water first enters the plate radiator through inlet S1 and flows out through outlet S2. Outlet S2 connects to inlet N1 of internal water circuit component 9. After passing through the internal heat-generating elements, the water generates heat and flows out through outlet N2 of internal water circuit component 9. Outlet N2 connects to inlet S3 of the plate radiator, where the hot water dissipates heat. The water then flows through outlet S4 and finally into the water tank. This cooling water circuit is integrated into the microwave head for repeated heat dissipation circulation. The water in the tank can undergo secondary heat dissipation, which can cool the heat inside the cabinet and also remove the heat generated by the magnetron assembly 2. This achieves a cooling cycle. When the magnetron assembly 2 is working, it generates hot water that transfers heat to the cooling fins of the plate radiator. At this time, the heat on the cooling fins of the plate radiator is dissipated into the individual cabinet, causing hot air to be generated inside the cabinet. Since the plate radiator's S1-S2 water channels flow with cold water, the hot air inside the cabinet is transferred to the cooling fins that flow with cold water, thereby reducing the temperature rise in the plate radiator installation space and achieving cooling balance.

[0047] In one embodiment of this utility model, such as Figure 4As shown, the outlet of the cooling fan 4's air duct can be constructed as a rectangle. The function of the cooling fan 4 is to cool the magnetron assembly 2. Therefore, to better cool the magnetron assembly 2, the outlet of the cooling fan 4's air duct can face the magnetron assembly 2, thereby forcing airflow to directionally cool the cathode heat sink of the magnetron assembly 2. In terms of structural layout, the outlet of the cooling fan 4's air duct is rectangular. The rectangular outlet can precisely control the airflow direction, facilitate integrated design with the air duct, simplify the assembly process, and reduce airflow diffusion losses. At the same time, the outlet connecting the air duct to the magnetron assembly 2 can force airflow to directionally cool the center of the cathode lead-out end, thereby accelerating the cooling speed of the magnetron assembly 2.

[0048] In one embodiment of this utility model, such as Figure 2 As shown, the microwave generator may include a high-voltage isolation transformer 8. This high-voltage isolation transformer 8 can be located on the side of the magnetron assembly 2 and can be connected to both the magnetron assembly 2 and an external power supply, thereby providing high-voltage isolation to the magnetron assembly 2. The high-voltage isolation transformer 8 is separated from the magnetron assembly 2 and also from the centrifugal fan, avoiding cross-connection of high and low voltage power supplies and preventing potential safety hazards.

[0049] In one embodiment of this utility model, the microwave head cabinet 1 can be composed of a cabinet frame and a sealed door panel. Electromagnetic shielding cotton can be installed at the contact position between the cabinet frame and the sealed door panel. The electromagnetic shielding cotton can increase the dustproof and moisture-proof effect, and also prevent microwave leakage, thus providing safety protection and ensuring the product's fully sealed characteristics.

[0050] In one embodiment of this invention, the fan in the condenser 3 can blow air towards the side wall of the microwave head cabinet 1. The cooling fan 4 can be positioned at the same height as the condenser 3. Therefore, when the condenser 3 cools down and blows the cooled air towards both sides of the cabinet, the cooling fan 4 can better draw in the cooled air from the condenser 3 and blow it towards the magnetron assembly 2, and an air duct can be formed between the cooling fan 4 and the condenser 3. The cooling fan 4 can be spaced apart from the condenser 3 along the length and / or width of the microwave head cabinet 1, preferably to achieve cooling of the magnetron assembly 2.

[0051] In one embodiment of this invention, the cooling fan 4 can be a centrifugal fan. Compared to axial fans, centrifugal fans have the characteristics of high air volume and small size, while also having higher air pressure. This allows them to overcome the resistance encountered by the gas during transport, ensuring that the gas can be delivered to the designated location and ensuring continuous air transport and circulation. The condenser 3 can be a finned condenser. The added fins of the finned condenser can increase the contact area with hot air, thereby better conducting heat to cool the hot air.

[0052] Through the above technical solution, this utility model provides a high-power-density, fully sealed microwave generator with a microwave head cabinet, which can be enclosed to form a housing space. A magnetron assembly can also be installed inside the microwave head cabinet. The condenser can be installed on the side wall of the microwave head cabinet and above the magnetron assembly. A fan can be installed on the condenser to extract the hot air generated by the magnetron assembly. The inlet and outlet of the condenser can be connected to an external water system through pipes, thereby forming a water circulation to cool the hot air generated by the magnetron assembly. The cooling fan can be installed on the side wall adjacent to or opposite the condenser and above the magnetron assembly, thereby extracting the cooled air from the condenser and blowing it onto the magnetron assembly to cool it. The overall structure of this microwave generator eliminates the external air inlet and outlet of the microwave head, thus preventing dust or moisture from the outside air from entering the microwave head.

[0053] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0054] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A high power density fully sealed microwave generator, characterized in that, The microwave generator includes: Microwave head cabinet (1), used to enclose a storage space; The magnetron assembly (2) is disposed inside the microwave head cabinet (1); A condenser (3) is installed on the side wall of the microwave head cabinet (1) and above the magnetron assembly (2). The condenser (3) is equipped with a fan to extract the hot air generated by the magnetron assembly (2). The inlet and outlet of the condenser (3) are connected to an external water system through pipes to cool the hot air generated by the magnetron assembly (2). A cooling fan (4) is installed on the side wall adjacent to or opposite to the condenser (3) and above the magnetron assembly (2) to draw air cooled by the condenser (3) and blow it toward the magnetron assembly (2).

2. The microwave generator according to claim 1, characterized in that, The magnetron assembly (2) includes: The excitation cavity (5) is located inside the microwave head cabinet (1); An electromagnet (6) is disposed at the top of the excitation cavity (5); A magnetron (7) is disposed inside the electromagnet (6); The electromagnet (6) and the magnetron (7) are respectively provided with internal water circuit components (9), which are connected to external water circuits to cool the electromagnet (6) and the magnetron (7) by water.

3. The microwave generator according to claim 2, characterized in that, The microwave generator includes a radiator (10) connected to the condenser (3) and the internal water circuit component (9) for heat dissipation and cooling.

4. The microwave generator according to claim 3, characterized in that, The heat sink (10) is installed inside the microwave head cabinet (1) and is separated into different installation spaces by a partition and the magnetron assembly (2). The partition is sealed to the microwave head cabinet (1) by shielding cotton; and / or The radiator (10) is a plate heat exchanger.

5. The microwave generator according to claim 1, characterized in that, The outlet structure of the air duct of the cooling fan (4) is rectangular; and / or The outlet of the cooling fan (4) is directed toward the magnetron assembly (2) to force airflow to directionally cool the cathode heat sink of the magnetron assembly (2).

6. The microwave generator according to claim 1, characterized in that, The microwave generator includes a high-voltage isolation transformer (8) disposed on the side of the magnetron assembly (2) and connected to the magnetron assembly (2) and an external power supply to provide high-voltage isolation to the magnetron assembly (2).

7. The microwave generator according to claim 1, characterized in that, The microwave head cabinet (1) includes a cabinet frame and a sealed door panel, and electromagnetic shielding cotton is installed at the contact position between the cabinet frame and the sealed door panel.

8. The microwave generator according to claim 1, characterized in that, The fan in the condenser (3) blows air onto the side wall of the microwave head cabinet (1).

9. The microwave generator according to claim 1, characterized in that, The cooling fan (4) is installed at the same height as the condenser (3); and / or The cooling fan (4) and the condenser (3) are spaced apart along the length and / or width of the microwave head cabinet (1).

10. The microwave generator according to claim 1, characterized in that, The cooling fan (4) is a centrifugal fan; and / or The condenser (3) is a finned condenser.

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