Lamp-pumped xenon lamp cooling flow channel structure

Abstract

The utility model discloses a lamp pump condensing cavity xenon lamp cooling runner structure, xenon lamp is installed in quartz glass tube, and the both ends of xenon lamp are cathode and anode respectively, and the cooling water runner is formed between glass tube inner wall and xenon lamp, the xenon lamp cooling runner of glass tube adopts asymmetric structure, and the anode side runner cross -sectional area is less than the cathode side runner cross -sectional area, and the small diameter one side runner entrance of glass tube is equipped with the key groove, the xenon lamp anode is equipped with the boss, and the boss is matched with the key groove, the utility model discloses the glass tube is designed into the shape of gradually reducing from cathode to anode cross section, makes the anode one side flow rate relatively higher, through the forced xenon lamp anode butt joint high flow rate cooling area, overcomes electrode heating difference, enhances xenon lamp electrode thermal stability, solves because the anode one side cooling flow rate is relatively insufficient, and further appears xenon lamp anode heat dissipation instability, finally leads to the shortening of xenon lamp life and energy instability problem, prolongs the service life of xenon lamp and maintains the output energy stability.

Description

Technical Field

[0001] This utility model belongs to the field of laser heat dissipation technology, specifically relating to a cooling channel structure for a lamp pump focusing cavity xenon lamp. Background Technology

[0002] Xenon lamp-pumped solid-state lasers are high-power pulsed laser devices with irreplaceable applications in medical aesthetics (such as skin peeling and dental treatment) and precision machining of industrial materials. These lasers typically output pulse energies of 0.1–2 J with repetition rates of 1–50 Hz. Their core pump source is a pulsed xenon lamp, which couples the xenon lamp radiation to a laser crystal rod via a focusing cavity to achieve population inversion and stimulated emission of light.

[0003] Currently, most xenon lamp-pumped lasers consist of a cavity and a glass tube. The glass tube houses the xenon lamp and the working medium. Current xenon lamp cooling channels in glass tubes are generally symmetrical. However, because the heat load density in the xenon lamp anode region is significantly higher than that in the cathode, this symmetrical cooling design leads to unstable heat dissipation from the xenon lamp anode, causing two major problems: first, it accelerates xenon lamp aging, and anode overheating accelerates the deterioration of the quartz tube, shortening its lifespan; second, the laser energy is not stable enough. Furthermore, existing xenon lamp cooling channel structures have not been optimized to address the thermal differences between the electrodes and the instability of heat dissipation. Summary of the Invention

[0004] Based on the issues of heat generation difference and heat dissipation instability of xenon lamp electrodes in the background technology, a lamp pump focusing cavity xenon lamp cooling channel structure is proposed.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A lamp pump focusing cavity xenon lamp cooling channel structure is disclosed, wherein a xenon lamp is installed inside a glass tube, with the two ends of the xenon lamp being the anode and the cathode, respectively. A cooling water channel is formed between the inner wall of the glass tube and the xenon lamp. The glass tube xenon lamp cooling channel adopts an asymmetrical structure, and the inner diameter of the glass tube at the xenon lamp cooling channel gradually decreases linearly from the cathode to the anode. A keyway is provided at the inlet of the channel on the smaller diameter side of the inner wall of the glass tube, and a boss is provided at the anode of the xenon lamp, with the boss matching the keyway.

[0007] Furthermore, the cooling flow direction of the glass tube is such that water enters from the smaller diameter side and exits from the other side.

[0008] Furthermore, the inner diameter of the glass tube in the xenon lamp cooling channel gradually decreases linearly from the cathode to the anode, with an inclination angle of 1°~2°.

[0009] Furthermore, the closest distance between the inner wall of the glass tube on the anode side of the xenon lamp cooling channel and the outer surface of the xenon lamp is 0.5 mm.

[0010] Furthermore, the keyway and boss are hemispherical, serving to prevent reverse insertion.

[0011] Furthermore, the keyway (4) has a depth of 1mm ± 0.1mm and a radius of curvature of 1.6mm ± 0.1mm.

[0012] The above technical solution can achieve the following beneficial effects:

[0013] This invention designs the cross-section of the cooling channel of the glass tube xenon lamp to gradually decrease linearly from the cathode to the anode, so that the flow velocity of the cooling water on the anode side is greater than that on the cathode side. By forcing the xenon lamp anode to connect with the high-velocity cooling zone, the thermal difference between the electrodes is overcome, and the problems of shortened xenon lamp life and unstable laser energy caused by insufficient anode cooling and unstable heat dissipation are solved, thus extending the service life of the xenon lamp and maintaining the stability of the output energy.

[0014] In this invention, an anti-reverse insertion keyway is provided on the inner side of the flow channel inlet on the small-diameter side, which matches the boss near the xenon lamp anode, thus preventing incorrect installation of the anode and cathode. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the existing symmetrical cooling channel structure for xenon lamps.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] In the picture:

[0018] 1. Glass tube; 2. Xenon lamp; 3. Cooling water channel; 4. Boss; 5. Keyway; 6. Cathode; 7. Cathode wire; 8. Anode; 9. Anode wire. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figure 1-2 As shown, Figure 1 The diagram shows an existing symmetrical xenon lamp cooling channel structure. The inner wall of the glass tube and the cooling water flow channel formed by the xenon lamp are symmetrical. However, because the heat load density in the anode region of the xenon lamp is significantly higher than that in the cathode, there is a difference in electrode heating. Based on the above problems... Figure 2This utility model proposes an asymmetric xenon lamp cooling channel structure. The inner diameter of the glass tube 1 gradually decreases from the cathode to the anode. A xenon lamp 2 is installed inside the glass tube, with the anode 8 and cathode 6 at its two ends. A cooling water channel 3 is formed between the inner wall of the glass tube and the xenon lamp. The glass tube adopts an asymmetric structure. Due to the gradual decrease in the inner diameter of the glass tube, the flow velocity on the anode side is greater than that on the cathode side when the overall flow rate remains constant. According to the turbulent thermal convection effect, the cooling water flow velocity has a greater impact on the cooling effect than the cross-sectional area of ​​the channel, which can effectively compensate for the difference in heat load density between the anode and cathode areas. At the same time, due to the asymmetry of the glass tube, it is necessary to distinguish between the anode and cathode of the glass tube. When installing the xenon lamp, it is necessary to match the keyway 4 at the inlet of the channel on the smaller diameter side of the glass tube with the protrusion 5 at the cathode of the xenon lamp to prevent installation errors.

[0021] Based on the above embodiments: the cooling flow direction of the glass tube is that water enters from the smaller diameter side and exits from the other side.

[0022] Based on the above embodiments: the inner diameter of the glass tube in the xenon lamp cooling channel of the glass tube gradually decreases linearly from the cathode to the anode, and the tilt angle is 1°~2°.

[0023] Based on the above embodiments: the closest distance between the inner wall of the glass tube on the anode side of the xenon lamp cooling channel and the outer surface of the xenon lamp is 0.5 mm.

[0024] Based on the above embodiments: the keyway and boss are hemispherical, which serves to prevent reverse insertion.

[0025] Based on the above embodiments: the keyway depth is 1mm and the radius of curvature is 1.6mm.

[0026] The above descriptions are all preferred embodiments of this utility model. For those skilled in the art, any modifications to this utility model in various equivalent forms without departing from the principle of this utility model shall fall within the protection scope of the appended claims.

Claims

1. A lamp pump focusing cavity xenon lamp cooling channel structure, characterized in that: A xenon lamp (2) is installed inside a glass tube (1). The two ends of the xenon lamp (2) are an anode (8) and a cathode (6), respectively. The feature is that a cooling water channel (3) is formed between the inner wall of the glass tube (1) and the xenon lamp (2). The xenon lamp cooling channel of the glass tube adopts an asymmetrical structure. The inner diameter of the glass tube at the xenon lamp cooling channel gradually decreases linearly from the cathode to the anode. A keyway (4) is provided at the inlet of the channel on the small diameter side of the inner wall of the glass tube. A boss (5) is provided at the anode of the xenon lamp. The boss (5) matches the keyway (4).

2. The lamp pump focusing cavity xenon lamp cooling channel structure according to claim 1, characterized in that: The cooling flow direction of the glass tube (1) is that water enters from the small diameter side and exits from the other side.

3. The lamp pump focusing cavity xenon lamp cooling channel structure according to claim 1, characterized in that: The inner diameter of the glass tube (1) at the xenon lamp cooling channel gradually decreases linearly from the cathode to the anode, with an inclination angle of 1°~2°.

4. The lamp pump focusing cavity xenon lamp cooling channel structure according to claim 1, characterized in that: The closest distance between the inner wall of the glass tube (1) on the anode side and the outer surface of the xenon lamp at the xenon lamp cooling channel is 0.5 mm.

5. The lamp pump focusing cavity xenon lamp cooling channel structure according to claim 1, characterized in that: The keyway (4) and boss (5) are hemispherical, which serves to prevent reverse insertion.

6. The lamp pump focusing cavity xenon lamp cooling channel structure according to claim 1, characterized in that: The keyway (4) has a depth of 1mm ± 0.1mm and a radius of curvature of 1.6mm ± 0.1mm.

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