Combined microwave power supply and spacer thereof

Abstract

The utility model discloses a combined microwave power supply and a spacer thereof. The combined microwave power supply comprises a metal shell, two microwave power supply modules and the spacer, wherein the isolation sheet is arranged in the metal shell and divides an inner cavity of the metal shell into two mounting cavities, and the isolation sheet can comprise a metal sheet, two end face insulating films and at least one side face insulating film; the two end face insulating films are compounded with the two end faces of the metal sheet respectively, the side face insulating films are compounded with the four side faces of the metal sheet and the two end face insulating films, and the metal sheet is completely wrapped by the end face insulating films and the side face insulating films; and the two microwave power supply modules are respectively matched in the two mounting cavities. According to the combined microwave power supply, the two microwave power supply modules can be prevented from interfering with each other through the spacer, and normal use of the combined microwave power supply is ensured.

Description

Technical Field

[0001] The utility model relates to the field of microwave power supplies, in particular to a combined microwave power supply and an isolation sheet thereof. Background Art

[0002] Microwaves refer to electromagnetic waves with a frequency of 300MHz to 3000GHz and a wavelength of 0.1mm to 1m. They have the characteristics of penetrability, small thermal inertia, uniform heating, fast speed, and high thermal efficiency. Therefore, they are widely used in microwave heating and other fields. A complete microwave system mainly includes microwave power supply, magnetron, waveguide element, sensor, controller and load. Among them, microwave power supply and magnetron are the core of microwave system, and the performance of microwave power supply and magnetron directly affects the performance of microwave system.

[0003] The existing microwave power supply generally includes a metal shell and a microwave power module arranged in the metal shell; the microwave power module mainly includes a half-wave voltage doubler rectifier circuit composed of a magnetic leakage transformer, a capacitor and a diode, and the magnetic leakage transformer is the core component of the microwave power module. In order to improve the utilization rate of the product, some people set two microwave power modules together in the metal shell, but when using this microwave power supply with two microwave power modules, it is found that the two microwave power modules will interfere with each other due to magnetic leakage, affecting the use of the microwave power supply.

[0004] In view of the existence of the above problems, it is necessary to study a combined microwave power supply and an isolation plate thereof, which can prevent the two microwave power supply modules from interfering with each other through the isolation plate, thereby ensuring the normal use of the combined microwave power supply. Utility Model Content

[0005] The utility model aims to provide a combined microwave power supply and an isolation sheet thereof, which can prevent two microwave power supply modules from interfering with each other through the isolation sheet, thereby ensuring the normal use of the combined microwave power supply.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A spacer comprises a metal sheet, two end face insulating films, and at least one side face insulating film; the two end face insulating films are respectively compounded with the two end faces of the metal sheet, each side face insulating film is compounded with the four side faces of the metal sheet and the two end face insulating films, and each end face insulating film and the side face insulating film completely cover the metal sheet.

[0008] The metal sheet is copper foil.

[0009] The end face insulating film and the side face insulating film are made of PET film.

[0010] There are four side surface insulating films, which are respectively compounded with four side surfaces of the metal sheet, and each side surface insulating film is compounded with two end surface insulating films.

[0011] The two end surface insulating films are respectively compounded with the two end surfaces of the metal sheet by adhesive, and the side surface insulating films are compounded with the four side surfaces of the metal sheet and the two end surface insulating films by adhesive.

[0012] The adhesive is acrylic pressure-sensitive adhesive.

[0013] A combined microwave power supply comprises a metal shell, two microwave power modules, and the isolation sheet as described above; the isolation sheet is arranged in the metal shell and the isolation sheet divides the inner cavity of the metal shell into two installation chambers, and the two microwave power modules are respectively matched in the two installation chambers.

[0014] An insulating sheet is sandwiched between the microwave power module and the metal shell.

[0015] The insulating sheet is made of flame-retardant Mylar sheet.

[0016] The magnetic notches of the leakage transformers of the two microwave power modules face opposite to each other.

[0017] After adopting the above scheme, the utility model arranges an isolation plate in the metal shell, and the isolation plate divides the inner cavity of the metal shell into two installation chambers to respectively install two microwave power modules. The isolation plate has a metal plate, and the metal plate can cooperate with the metal shell to make the two installation chambers have an electromagnetic shielding effect, so that the two microwave power modules respectively matched in the two installation chambers can be isolated from each other to avoid mutual interference between the two microwave power modules; in addition, the isolation plate has an end face insulating film and a side face insulating film that completely cover the metal plate, so that the metal plate will not be conductive with the metal shell and the microwave power module, thereby ensuring the safe use of the microwave power module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the combined microwave power supply of the utility model.

[0019] Figure 2 It is a partial structural schematic diagram of the combined microwave power supply of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the isolation sheet of the utility model.

[0021] Figure 4 A partial cross-sectional view of the isolation sheet of the utility model Figure 1 .

[0022] Figure 5 A partial cross-sectional view of the isolation sheet of the utility model Figure 2 .

[0023] Description of labels:

[0024] Metal shell 1, metal box cover 11, connecting terminal 111, metal box body 12,

[0025] Microwave power module 2,

[0026] Isolation sheet 3, metal sheet 31, end surface insulating film 32, side surface insulating film 33. DETAILED DESCRIPTION

[0027] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0028] like Figures 1 to 5 As shown, the utility model discloses a combined microwave power supply, which includes a metal shell 1, two microwave power modules 2, and an isolating plate 3; wherein the isolating plate 3 is arranged in the metal shell 1 and the isolating plate 3 divides the inner cavity of the metal shell 1 into two installation chambers, and the isolating plate 3 may include a metal sheet 31, two end surface insulating films 32, and at least one side surface insulating film 33; the two end surface insulating films 32 are respectively compounded with the two end surfaces of the metal sheet 31, each side surface insulating film 33 is compounded with the four side surfaces of the metal sheet 31 and the two end surface insulating films 32, and each end surface insulating film 32 and the side surface insulating film 33 completely cover the metal sheet 31; and the two microwave power modules 2 are respectively matched in the two installation chambers.

[0029] In the present invention, a spacer 3 is provided in the metal shell 1, and the spacer 3 divides the inner cavity of the metal shell 1 into two installation chambers to respectively install two microwave power modules 2. The spacer 3 has a metal sheet 31, and the metal sheet 31 can cooperate with the metal shell 1 to make the two installation chambers have an electromagnetic shielding effect, so that the two microwave power modules 2 respectively matched in the two installation chambers can be isolated from each other to avoid mutual interference between the two microwave power modules 2; in addition, the spacer 3 has an end face insulating film 32 and a side face insulating film 33 that completely cover the metal sheet 31, so that the metal sheet 31 will not be conductive with the metal shell 1 and the microwave power module 2, ensuring the safety of the use of the microwave power module 2. In addition, in the present invention, since the spacer 3 can isolate the two microwave power modules 2 and the spacer 3 does not conduct electricity with the microwave power module 2, the two microwave power modules 2 can be as close as possible, which helps to reduce the volume of the metal shell 1.

[0030] In an embodiment of the utility model, when the isolation sheet 3 is produced, the two end face insulating films 32 are firstly compounded with the two end faces of the metal sheet 31 respectively, and then the side insulating films 33 are compounded with the four sides of the metal sheet 31 and the two end face insulating films 32; wherein, the thickness of the composite body formed after the two end face insulating films 32 are compounded with the two end faces of the metal sheet 31 respectively is thicker, so that it is convenient to compound the side insulating films 33 with the four sides of the metal sheet 31 and the two end face insulating films 32 later.

[0031] In the embodiment of the utility model, the metal sheet 31 of the isolation sheet 3 can be made of copper foil with a thickness of 0.05-0.1 mm; the end face insulating film 32 and the side face insulating film 33 of the isolation sheet 3 are made of PET film.

[0032] In the embodiment of the utility model, the two end face insulating films 32 of the isolation sheet 3 are respectively bonded with the two end faces of the metal sheet 31 by adhesive, and the side face insulating films 33 of the isolation sheet 3 are bonded with the four side faces of the metal sheet 31 and the two end face insulating films 32 by adhesive, so as to ensure the bonding strength of the metal sheet 31, the end face insulating films 32 and the side face insulating films 33. The adhesive is acrylic pressure sensitive adhesive, which is a kind of adhesive that can be tightly bonded to the adherend by light finger pressure without the aid of solvents, heat or other means, and is convenient for bonding the metal sheet 31, the end face insulating films 32 and the side face insulating films 33.

[0033] In an embodiment of the utility model, the number of the side insulating films 33 of the isolation sheet 3 can be four, and the four side insulating films 33 are respectively compounded with the four side surfaces of the metal sheet 31, and each side insulating film 33 is compounded with two end face insulating films 32; such an arrangement enables the compounding of the side insulating film 33 with the metal sheet 31 and the end face insulating film 32, as well as the compounding of the end face insulating film 32 with the metal sheet 31 to be automated by mechanical equipment, thereby improving production efficiency.

[0034] In the embodiment of the utility model, an insulating sheet (not shown) is sandwiched between the microwave power module 2 and the metal shell 1, and the insulating sheet can prevent the microwave power module 2 from conducting electricity with the metal shell 1; the insulating sheet can be a flame-retardant Mylar sheet. In addition, the metal shell 1 can be filled with insulating and heat-conductive transformer oil, so that the heat of the microwave power module 2 can be quickly transferred to the metal shell 1 through the transformer oil to avoid overheating of the microwave power module 2, and the outer wall of the metal shell 1 can be provided with heat dissipation fins to facilitate heat dissipation.

[0035] In an embodiment of the utility model, the magnetic notches of the leakage magnetic transformers of the two microwave power modules 2 face opposite to each other, so that the leakage magnetic directions of the leakage magnetic transformers of the two microwave power modules 2 are opposite to each other, and the mutual interference between the two microwave power modules 2 can be avoided, so that the two microwave power modules 2 can be as close as possible, thereby helping to reduce the volume of the metal shell 1.

[0036] In an embodiment of the utility model, the metal shell 1 may include a connected metal box cover 11 and a metal box body 12, the metal box cover 11 may be provided with connection terminals 111 respectively electrically connected to the two microwave power modules 2, the heat sink of the microwave power module 2 may be bonded to the inner wall of the metal shell 1 by an adhesive to fix the microwave power module 2, and the isolation plate 3 may be plugged into and matched with the metal shell 1 to prevent the isolation plate 3 from shifting.

[0037] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A spacer, characterized in that: It includes a metal sheet, two end surface insulating films, and at least one side surface insulating film; The two end face insulating films are respectively compounded with the two end faces of the metal sheet, each side face insulating film is compounded with the four side faces of the metal sheet and the two end face insulating films, and each end face insulating film and the side face insulating film completely cover the metal sheet.

2. The isolation sheet according to claim 1, characterized in that: The metal sheet is copper foil.

3. The isolation sheet according to claim 1, characterized in that: The end face insulating film and the side face insulating film are made of PET film.

4. The isolation sheet according to claim 1, characterized in that: There are four side surface insulating films, which are respectively compounded with four side surfaces of the metal sheet, and each side surface insulating film is compounded with two end surface insulating films.

5. The isolation sheet according to claim 1 or 4, characterized in that: The two end surface insulating films are respectively compounded with the two end surfaces of the metal sheet by adhesive, and the side surface insulating films are compounded with the four side surfaces of the metal sheet and the two end surface insulating films by adhesive.

6. The isolation sheet according to claim 5, characterized in that: The adhesive is acrylic pressure-sensitive adhesive.

7. A combined microwave power supply, comprising a metal housing and two microwave power modules, characterized in that: The combined microwave power supply also includes the isolation plate as claimed in claim 1; the isolation plate is arranged in the metal shell and the isolation plate divides the inner cavity of the metal shell into two installation chambers, and the two microwave power supply modules are respectively matched in the two installation chambers.

8. The combined microwave power supply according to claim 7, characterized in that: An insulating sheet is sandwiched between the microwave power module and the metal shell.

9. The combined microwave power supply according to claim 8, characterized in that: The insulating sheet is made of flame-retardant Mylar sheet.

10. The combined microwave power supply according to claim 7, characterized in that: The magnetic notches of the leakage transformers of the two microwave power modules face opposite to each other.

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