Xenon lamp precombustion circuit, xenon lamp precombustion system and laser equipment

Abstract

The utility model discloses a xenon lamp pre-combustion circuit which comprises a power supply, an energy storage capacitor, an electronic switch, a transformer and a spray point assembly. The output end of the power supply is connected with the input end of the energy storage capacitor, the output end of the energy storage capacitor is connected with the first end of the electronic switch, the second end of the electronic switch is further connected with the first end of the primary side of the transformer, the control end of the transformer is connected with a trigger signal end, and the second end of the primary side of the transformer is connected with the input end of the energy storage capacitor; the spray point assembly is connected between the third end and the fourth end of the secondary side of the transformer, and the xenon lamp is connected with the spray point assembly in parallel. When the voltage generated in the xenon lamp pre-combustion circuit is too high, a large amount of charges can be discharged in time, other circuits are prevented from being damaged, the structure of circuit board arrangement can be made compact, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical laser equipment, in particular to a xenon lamp pre-ignition circuit, system and laser equipment. Background Art

[0002] Xenon lamps used in medical laser equipment require a continuous current of approximately 150mA to maintain their normal luminous state. A voltage-doubling pre-ignition circuit applies high voltage to both ends of the xenon lamp, allowing it to quickly reach the pre-ignition state, thereby ensuring stability during the discharge process.

[0003] In existing xenon lamps, three power supplies are connected in parallel: a pre-ignition circuit, a maintenance circuit, and a busbar capacitor and charging circuit. The pre-ignition circuit generates high voltage, which releases charge through a low-impedance path. However, because the busbar capacitor and charging circuit have other protection mechanisms, the high voltage can only be discharged through the xenon lamp and the maintenance circuit. If the maintenance circuit requires a safe distance, the PCB traces must be spaced at least 10mm apart, hindering a compact PCB layout. Utility Model Content

[0004] The utility model provides a xenon lamp pre-ignition circuit, system and laser equipment. When the voltage generated in the xenon lamp pre-ignition circuit is too high, a large amount of charge can be discharged in time to avoid damage to other circuits, and the circuit board layout structure can be made compact, saving costs.

[0005] In a first aspect, an embodiment of the present utility model provides a xenon lamp pre-ignition circuit, comprising: a power supply, an energy storage capacitor, an electronic switch, a transformer, and a discharge needle assembly;

[0006] The output end of the power supply is connected to the input end of the energy storage capacitor, the output end of the energy storage capacitor is connected to the first end of the electronic switch, the second end of the electronic switch is also connected to the first end of the primary side of the transformer, the control end of the transformer is connected to the trigger signal end of the control module, and the second end of the primary side of the transformer is connected to the input end of the energy storage capacitor;

[0007] The discharge needle assembly is connected between the third end and the fourth end of the secondary side of the transformer, and the xenon lamp is connected in parallel with the discharge needle assembly.

[0008] Optionally, the discharge needle assembly includes a first discharge needle group and a second discharge needle group;

[0009] The first discharge needle group is connected to the third end of the secondary side of the transformer, and the second discharge needle group is connected to the fourth end of the secondary side of the transformer;

[0010] A preset distance is provided between the first discharge needle group and the second discharge needle group.

[0011] Optionally, the impedance of the first discharge needle group and the second discharge needle group are both greater than the impedance of the inert gas in the xenon lamp.

[0012] Optionally, the preset distance includes 4mm-10mm.

[0013] Optionally, the secondary side of the transformer includes at least one insulating slot and a preset number of coils;

[0014] The insulating groove is arranged between the two groups of coils.

[0015] Optionally, the secondary side of the transformer includes at least one retaining wall and a preset number of coils;

[0016] The retaining wall is arranged between the two groups of coils.

[0017] In a second aspect, an embodiment of the present invention further provides a xenon lamp pre-ignition system, comprising the xenon lamp pre-ignition circuit, bus capacitor and charging circuit, maintenance circuit, and xenon lamp as described in the first aspect;

[0018] The xenon lamp pre-ignition circuit is connected in parallel with the bus capacitor and charging circuit, the maintenance circuit and the xenon lamp.

[0019] Optionally, the electrical distance between the maintenance circuit and the pre-ignition circuit is less than 10 mm.

[0020] In a third aspect, an embodiment of the present invention further provides a laser device, comprising the xenon lamp pre-combustion system as described in the second aspect.

[0021] Optionally, the laser device is a solid-state laser.

[0022] The present invention provides a xenon lamp pre-ignition circuit, system, and laser equipment. The pre-ignition circuit includes: a power supply, an energy storage capacitor, an electronic switch, a transformer, and a discharge needle assembly. The output end of the power supply is connected to the input end of the energy storage capacitor, the output end of the energy storage capacitor is connected to the first end of the electronic switch, the second end of the electronic switch is also connected to the first end of the primary side of the transformer, the control end of the transformer is connected to the trigger signal end, and the second end of the primary side of the transformer is connected to the input end of the energy storage capacitor. The discharge needle assembly is connected between the third and fourth ends of the secondary side of the transformer, and the xenon lamp is connected in parallel with the discharge needle assembly. The discharge needle assembly is provided on the secondary side of the transformer of the xenon lamp pre-ignition circuit. When the voltage generated in the xenon lamp pre-ignition circuit is too high, a large amount of charge can be discharged in time to avoid damage to other circuits. The circuit board layout can also be made compact, saving costs.

[0023] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of a xenon lamp pre-ignition circuit provided in an embodiment of the present utility model;

[0026] Figure 2 A schematic structural diagram of a xenon lamp pre-combustion system provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Figure 1 A schematic diagram of a xenon lamp pre-ignition circuit according to an embodiment of the present invention is provided. Figure 1The xenon lamp pre-ignition circuit 100 includes: a power supply 110, an energy storage capacitor 120, an electronic switch 130, a transformer 140, and a discharge needle assembly 150. The output end of the power supply 110 is connected to the input end of the energy storage capacitor 120, the output end of the energy storage capacitor 120 is connected to the first end of the electronic switch 130, the second end of the electronic switch 130 is also connected to the first end of the primary side of the transformer 140, the control end of the transformer 140 is connected to the trigger signal end of the control module A, and the second end of the primary side of the transformer 140 is connected to the input end of the energy storage capacitor 120; the discharge needle assembly 150 is connected between the third and fourth ends of the secondary side of the transformer 140. In the embodiment of the present utility model, the xenon lamp and the discharge needle assembly 150 are connected in parallel.

[0030] Specifically, the voltage of the power supply 110 can be selected according to the requirement for igniting the xenon lamp and the amplification factor of the transformer 140. For example, the voltage of the power supply 110 can be 300V.

[0031] It should be noted that in the embodiment of the present invention, in actual application, after the system self-test (water temperature, optical fiber in place, interlock) of the laser device passes and confirms that the laser device is running, the trigger signal end of the control module A will output a trigger signal, thereby turning on the electronic switch 130. The power supply 110 of the embodiment of the present invention can charge the energy storage capacitor 120. When the electronic switch 130 is turned on and the energy storage capacitor 120 is discharged, the circuit can be completed in the order of the energy storage capacitor 120, the electronic switch 130, the primary side of the transformer 140, and then to the energy storage capacitor 120. The secondary side of the transformer 140 will generate an induced voltage and output it to the outside. The discharge needle assembly 150 of the embodiment of the present invention is connected between the third and fourth ends of the secondary side of the transformer 140. When the xenon lamp circuit fails, the high voltage will be released at the discharge needle assembly 150, which can protect other subsequent circuits connected to the third and fourth ends of the secondary side of the transformer 140 to avoid breakdown of the subsequent circuits.

[0032] In an embodiment of the present invention, a discharge needle assembly 150 is provided on the secondary side of the transformer 140 of the xenon lamp pre-ignition circuit 100. When the voltage generated in the xenon lamp pre-ignition circuit 100 is too high, a large amount of charge can be discharged in time to avoid damage to other circuits. As long as the electrical distance between the subsequent circuit and the secondary side of the transformer 140 is greater than the electrical distance between the discharge needle assembly 150 and the secondary side of the transformer 140, the high voltage will be released at the discharge needle assembly 150, which can make the circuit board layout structure compact and save costs.

[0033] Optionally, based on the above embodiment, the discharge needle assembly 150 includes a first discharge needle group 151 and a second discharge needle group 152. The first discharge needle group 151 is connected to the third terminal of the secondary side of the transformer 140, and the second discharge needle group 152 is connected to the fourth terminal of the secondary side of the transformer 140. A preset distance is provided between the first discharge needle group 151 and the second discharge needle group 152.

[0034] Among them, the preset distance can be adjusted according to usage requirements.

[0035] It should be noted that the first discharge needle group 151 and the second discharge needle group 152 in the embodiment of the present invention can both be composed of four discharge needles, and there is a preset distance between the first discharge needle group 151 and the second discharge needle group 152, so that high voltage can be released through the air between the first discharge needle group 151 and the second discharge needle group 152.

[0036] Optionally, based on the above embodiment, the impedance of the first discharge needle group 151 and the second discharge needle group 152 are both greater than the impedance of the inert gas in the xenon lamp.

[0037] Specifically, by adjusting the distance between the first discharge needle group 151 and the second discharge needle group 152 so that the impedance of the first discharge needle group 151 and the second discharge needle group 152 is greater than the impedance of the inert gas in the xenon lamp, the normal operation of the xenon lamp can be prevented from being affected by the arrangement of the discharge needle assembly 150.

[0038] Optionally, based on the above embodiment, the preset distance includes 4mm-6mm.

[0039] It should be noted that, in the embodiment of the present invention, the preset distance between the first discharge needle group 151 and the second discharge needle group 152 may be determined first, and then the distance between the subsequent circuit and the secondary side of the transformer 140 may be determined.

[0040] Optionally, based on the above embodiment, the secondary side of the transformer 140 includes at least one insulating slot and a preset number of coil groups; the insulating slot is provided between two coil groups.

[0041] Optionally, based on the above embodiment, the secondary side of the transformer 140 includes at least one retaining wall and a preset number of groups of coils; the retaining wall is provided between two groups of coils.

[0042] Specifically, transformer 140 can be a high-turns-ratio transformer. High-turns-ratio transformers have high insulation and withstand voltage properties. However, when the voltage is too high, voltage drops easily occur within the densely packed coils of a high-turns-ratio transformer, leading to self-breakdown. To improve the interlayer insulation of the secondary side of transformer 140, the coils of the secondary side of transformer 140 are grouped and insulation slots or barriers are provided between the two groups of coils to prevent self-breakdown of the coils.

[0043] In an embodiment of the present invention, a first discharge needle group 151 and a second discharge needle group 152 are provided on the secondary side of the transformer 140 of the xenon lamp pre-ignition circuit 100. When the voltage generated in the xenon lamp pre-ignition circuit 100 is too high, a large amount of charge can be promptly discharged to avoid damage to other circuits. As long as the electrical distance between the subsequent circuit and the secondary side of the transformer 140 is greater than the electrical distance between the discharge needle assembly 150 and the secondary side of the transformer 140, the high voltage will be discharged at the discharge needle assembly 150, which can make the circuit board layout more compact and save costs. By grouping the coils on the secondary side of the transformer 140 and providing an insulating groove or retaining wall between the two groups of coils, the coils can be prevented from self-breakdown, thereby improving circuit safety.

[0044] Figure 2 The utility model provides a schematic diagram of the structure of a xenon lamp pre-combustion system, referring to Figure 2 The xenon lamp simmering system B includes a xenon lamp simmering circuit 100, a bus capacitor and charging circuit 200, a maintenance circuit 300, and a xenon lamp 400. The xenon lamp simmering circuit 100 is connected in parallel with the bus capacitor and charging circuit 200, the maintenance circuit 300, and the xenon lamp 400.

[0045] Optionally, based on the above embodiment, the electrical distance between the circuit 300 and the simmer circuit 100 is maintained to be less than 10 mm.

[0046] It is understood that the electrical distance between the sustain circuit 300 and the simmer circuit 100 is less than 10 mm, which can make the circuit board layout compact and save costs. Because the high voltage generated by the secondary side of the transformer 140 of the xenon lamp simmer circuit 100 provided in this embodiment of the utility model is released at the discharge needle assembly 150, even if the electrical distance between the sustain circuit 300 and the simmer circuit 100 is less than 10 mm, the sustain circuit 300 will not be damaged.

[0047] A xenon lamp pre-ignition system provided in an embodiment of the present invention includes all the technical features of the xenon lamp pre-ignition circuit 100 provided in the above embodiment, and thus has the same beneficial effects. For matters not described in detail in the embodiment of the present invention, reference can be made to the xenon lamp pre-ignition circuit provided in the above embodiment, and no further description will be given here.

[0048] An embodiment of the present utility model further provides a laser device, comprising the xenon lamp pre-combustion system provided in the above embodiment.

[0049] Optionally, based on the above embodiment, the laser device is a solid laser.

[0050] It should be noted that the solid-state laser can be used in a holmium laser therapy machine or an erbium laser therapy machine.

[0051] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A xenon lamp pre-ignition circuit, characterized in that: include: Power supplies, energy storage capacitors, electronic switches, transformers, and discharge needle assemblies; The output end of the power supply is connected to the input end of the energy storage capacitor, the output end of the energy storage capacitor is connected to the first end of the electronic switch, the second end of the electronic switch is also connected to the first end of the primary side of the transformer, the control end of the transformer is connected to the trigger signal end of the control module, and the second end of the primary side of the transformer is connected to the input end of the energy storage capacitor; The discharge needle assembly is connected between the third end and the fourth end of the secondary side of the transformer, and the xenon lamp is connected in parallel with the discharge needle assembly.

2. The xenon lamp simmering circuit according to claim 1, characterized in that: The discharge needle assembly includes a first discharge needle group and a second discharge needle group; The first discharge needle group is connected to the third end of the secondary side of the transformer, and the second discharge needle group is connected to the fourth end of the secondary side of the transformer; A preset distance is provided between the first discharge needle group and the second discharge needle group.

3. The xenon lamp pre-ignition circuit according to claim 2, characterized in that: The impedance of the first discharge needle group and the second discharge needle group are both greater than the impedance of the inert gas in the xenon lamp.

4. The xenon lamp pre-ignition circuit according to claim 2, characterized in that: The preset distance includes 4mm-10mm.

5. The xenon lamp simmering circuit according to claim 1, characterized in that: The secondary side of the transformer includes at least one insulating slot and a preset number of coils; The insulating groove is arranged between the two groups of coils.

6. The xenon lamp simmering circuit according to claim 1, characterized in that: The secondary side of the transformer includes at least one retaining wall and a preset number of coils; The retaining wall is arranged between the two groups of coils.

7. A xenon lamp pre-combustion system, characterized in that: The xenon lamp pre-ignition circuit, bus capacitor and charging circuit, maintenance circuit and xenon lamp according to any one of claims 1 to 6 are included; The xenon lamp pre-ignition circuit is connected in parallel with the bus capacitor and charging circuit, the maintenance circuit and the xenon lamp.

8. The xenon lamp pre-ignition system according to claim 7, characterized in that: The electrical distance between the maintenance circuit and the pre-ignition circuit is less than 10 mm.

9. A laser device, characterized in that: Comprising the xenon lamp pre-combustion system as claimed in claim 7 or 8.

10. The laser device according to claim 9, characterized in that The laser device is a solid-state laser.

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