Light source system of integrated closed heat dissipation structure and heat dissipation method

Abstract

The invention relates to a light source system of an integrated closed heat dissipation structure. The light source system is mainly applied to equipment such as an ultraviolet phototherapy instrument. Aiming at the contradiction between potential safety hazards (liquid / dust invasion and ozone leakage) and heat dissipation efficiency in the existing open type air cooling heat dissipation scheme, the system innovatively adopts a totally-closed structure: a closed space for isolating the outside is formed by a sealed shell, and an internal circulation heat dissipation unit consisting of a heat conducting plate, a semiconductor chilling plate cold end and a double-circulation fan is arranged in the closed space. After cold air absorbs heat through the light source module, heat exchange is completed in a cold source fin air channel, and internal efficient circulation heat dissipation is achieved. And meanwhile, heat is led out through the hot end of the semiconductor chilling plate and an external cooling fan. The system has the advantages of airtight protection and active heat dissipation, external pollutants are effectively isolated, ozone leakage is prevented, the heat dissipation efficiency is improved through the multi-stage heat conduction design, the service life of a light source is prolonged, and the problem of contradiction between protection and heat dissipation in a traditional scheme is solved.

Description

Technical Field

[0001] The present invention relates to phototherapy equipment, and in particular to a light source system with an integrated closed heat dissipation structure. Background Art

[0002] The light source systems of current ultraviolet light therapy devices (such as excimer lamps and LED modules) will generate high temperatures (over 100°C) when running for a long time, and need to rely on open air cooling solutions. The typical method is to introduce external air through the light source or heat dissipation fins through a fan to achieve heat exchange (for example, patent CN202120023478.1), but there are significant defects: safety hazards: open air ducts can easily allow external liquids / dust to enter the light source area, causing a short circuit in high-voltage components or a decrease in the light transmittance of the light source; gas leakage: ozone generated by the excimer light source overflows through the heat dissipation holes, affecting the safety and comfort of use; protection contradictions: the existing closed structure is difficult to take into account both heat dissipation efficiency and sealing requirements, which aggravates the degradation of the light source life. Summary of the Invention

[0003] In view of the above-mentioned defects of the prior art, the present invention provides a light source system with an integrated closed heat dissipation structure, comprising:

[0004] A sealed shell, the interior of which forms a completely enclosed sealed space;

[0005] A light source module is disposed in the sealed space;

[0006] Internal circulation heat dissipation unit, including:

[0007] The heat conducting plate, as the side wall of the sealed space, is thermally connected to the cold end of the semiconductor refrigeration plate.

[0008] The cold source fin air duct is connected to the inner side of the heat conducting plate by heat conduction.

[0009] A circulation fan drives the airflow to circulate along a preset path in the sealed space, the path passing through the light source module and the cooling source fin duct;

[0010] The external heat dissipation unit includes a hot end of a semiconductor refrigeration plate and an external heat dissipation device, which is used to discharge the heat conducted by the internal circulation heat dissipation unit to the external environment.

[0011] Furthermore, the sealed shell is made of metal material or polymer material, and the connection is sealed by an airtight process.

[0012] Furthermore, the light source module includes an excimer lamp tube and a lamp tube shell that accommodates the excimer lamp tube. The air inlet end of the lamp tube shell is provided with an air guide ring, which is provided with an outer vortex hole and a central inner vortex hole, respectively guiding the airflow to form vortex heat dissipation channels on the outer wall and inner wall of the excimer lamp tube.

[0013] Furthermore, the sealed space is filled with hydrogen as a heat dissipation medium.

[0014] Furthermore, the outer side of the heat conducting plate is covered with a heat insulating layer.

[0015] Furthermore, the circulation fan group includes at least two fans, which are respectively arranged on the air inlet side of the light source module and the air outlet side of the cold source fin duct.

[0016] Furthermore, a light-transmitting sealing structure is provided between the light outlet of the light source module and the sealing housing.

[0017] The present invention also provides a closed heat dissipation method, comprising:

[0018] Establish an air circulation channel in a sealed space that is isolated from the external environment;

[0019] The circulating fan drives the air flow through the light source module to absorb heat and guide it to the cold source fin duct for heat exchange;

[0020] The cold end of the semiconductor refrigeration chip is used to cool the cold source fin air duct, while the heat is transferred to the external heat dissipation unit through its hot end;

[0021] The heat is discharged to the external environment through the external heat sink.

[0022] Furthermore, the path of the air circulation channel includes: sucking air from the air inlet side of the light source module, flowing through the light source module and carrying heat into the cold source fin duct, and returning to the air inlet side of the light source module after cooling.

[0023] Furthermore, the external heat dissipation device includes heat dissipation fins and an external fan, which accelerates heat diffusion through forced convection.

[0024] The present invention constructs a fully enclosed sealed space and an internal and external coordinated heat dissipation mechanism, which prevents the invasion of external pollutants and the leakage of harmful gases while significantly improving the heat dissipation efficiency and system stability: the internal circulation heat dissipation unit utilizes the synergistic effect of semiconductor refrigeration plates and circulating fans to quickly transfer the heat generated by the light source module to the cold source fin duct and evenly cool it down, and the external heat dissipation unit realizes efficient external discharge of internal heat through the hot end heat dissipation device; this structure not only solves the safety hazards and protection contradictions of the open heat dissipation solution, but also avoids the temperature rise out of control caused by the obstruction of the heat dissipation path in the traditional closed design, thereby extending the life of the light source and ensuring the long-term reliable operation of the equipment in complex environments. It is particularly suitable for medical phototherapy equipment with strict requirements on air tightness, cleanliness and temperature control accuracy.

[0025] The present invention further achieves precise dynamic control of the light source's operating temperature by optimizing airflow organization and medium selection, effectively avoiding local overheating caused by heat accumulation in traditional closed systems; the unique air guide ring design combined with the thermodynamic properties of hydrogen significantly improves the contact efficiency between the airflow and the light source surface, ensuring uniform and rapid heat extraction; in addition, the closed structure greatly reduces the equipment's sensitivity to external environmental temperature and humidity, enhances the system's adaptability under complex working conditions, and reduces the maintenance frequency caused by pollutant deposition, providing medical phototherapy equipment with more stable and reliable light output quality and long-term maintenance-free operation guarantees.

[0026] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the principle of the present invention;

[0028] Figure 2 It is an external view of a preferred embodiment of the present invention;

[0029] Figure 3 is an internal view of a preferred embodiment of the present invention;

[0030] Figure 4 Schematic diagram of an excimer lamp tube structure with an air guide ring in a preferred embodiment of the present invention;

[0031] Figure 5 yes Figure 4 A cross-sectional view of a fracture;

[0032] Figure 6 yes Figure 4 Cross-sectional view of . DETAILED DESCRIPTION

[0033] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0034] like Figure 1 As shown, the present invention proposes a closed heat dissipation light source system, the core of which is to construct a sealed space that is completely isolated from the outside world, and establish an efficient internal circulation heat dissipation path in the space, while at the same time exporting internal heat to the external environment through heat conduction components such as semiconductor refrigeration plates.

[0035] like Figure 2-3As shown, the system consists of a sealed housing 1, a light source module 4, an internal circulation heat dissipation unit, and an external heat dissipation unit. The sealed housing 1 is made of aluminum alloy or engineering plastic, forming a completely enclosed sealed space 2. Each joint is airtight using sealant or ultrasonic welding. The light source module 4 is fixed within the sealed space and contains an excimer lamp or LED light board. Its light outlet filter 41 is sealed with silicone rubber to the housing's light-transmitting window, ensuring light transmission while isolating it from foreign matter.

[0036] The internal circulation heat dissipation unit includes a heat conducting plate 3, a cold end 52 of the semiconductor refrigeration plate 5, a cold source fin duct 6, a first circulation fan 7, and a second circulation fan 8. The heat conducting plate 3, as one of the side walls of the sealed space, is made of a copper-based composite material. Its outer side is tightly fitted with the cold end 52 of the semiconductor refrigeration plate. At the same time, the cold end 52 of the semiconductor refrigeration plate 5 is embedded in the interior of the heat conducting plate 3 to maximize the contact area. The rest of the outer side of the heat conducting plate 3 is covered with a heat insulating material 31. The inner side of the heat conducting plate 3 is connected to the cold source fin duct 6, thereby transmitting the cooling effect of the cold end 52 of the semiconductor refrigeration plate 5 to the cold source fin duct 6. The first circulation fan 7 and the second circulation fan 8 cooperate to drive the airflow to circulate along a preset path in the sealed space: cold air enters from the light source module air inlet duct 13, flows through the high-temperature area of ​​the light source module 4, absorbs heat, and then enters the cold source fin duct 6 through the light source module air outlet duct 12 to complete the heat exchange. The cooled air enters the circulation again.

[0037] The external heat dissipation unit includes a hot end 51 of the semiconductor refrigeration plate 5 and an external heat dissipation fan 9. The hot end 51 of the semiconductor refrigeration plate 5 is connected to the external heat dissipation fan 9, so as to continuously dissipate the heat inside the sealed space 2.

[0038] like Figure 4-6 As shown, in a further embodiment of the present invention, the light source module 4 includes an excimer lamp tube 40. The excimer lamp tube 40 is arranged in a lamp tube housing 42. An air guide ring 43 is provided at one end of the air inlet of the lamp tube housing 42. The air guide ring 43 is provided with a circle of outer vortex holes 431 and an inner vortex hole 432 located in the center. The cold air entering through the outer vortex holes 431 is introduced into the cavity between the outer wall 401 of the excimer lamp tube 40 and the lamp tube housing 42, and forms a vortex around the outer wall 401 of the excimer lamp tube 40 to efficiently remove the heat emitted by the outer wall 401 of the excimer lamp tube 40; while the cold air entering through the inner vortex hole 432 is introduced into the central cavity of the excimer lamp tube 40, and forms a vortex around the inner wall 402 of the excimer lamp tube 40, thereby increasing the heat exchange time and efficiently removing the heat emitted by the inner wall 402 of the excimer lamp tube 40.

[0039] In the above embodiment, hydrogen is preferably used instead of air as the flow medium in the closed heat dissipation structure. The specific heat capacity of hydrogen is 14267 J / kg°C, while the specific heat capacity of air is approximately 1004 J / kg°C. This means that hydrogen can absorb or release more heat when the temperature changes. To improve the heat dissipation capacity of the internal circulating gas per unit volume, hydrogen with a higher specific heat capacity is used to replace the air. Simultaneously, the increased heat exchange time due to the formation of eddy currents can better utilize the high specific heat capacity of hydrogen, thereby increasing its heat dissipation capacity by orders of magnitude.

[0040] Furthermore, a temperature sensor can be provided at the air outlet of the excimer lamp to detect the air outlet temperature in real time, and control the power of the semiconductor refrigeration plate and / or the ventilation volume of the internal circulation cooling fan in real time according to the detected temperature, so that the internal circulation heat dissipation capacity can be adjusted, with the aim of maintaining a constant temperature of the excimer lamp. An excimer lamp with a more constant temperature can ensure the stability of its ultraviolet spectrum characteristics and light intensity.

[0041] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thickness of components in some places in the drawings is appropriately exaggerated.

[0042] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A light source system with an integrated closed heat dissipation structure, characterized in that: include: A sealed shell, the interior of which forms a completely enclosed sealed space; A light source module is disposed in the sealed space; Internal circulation heat dissipation unit, including: The heat conducting plate, as the side wall of the sealed space, is thermally connected to the cold end of the semiconductor refrigeration plate. The cold source fin air duct is connected to the inner side of the heat conducting plate by heat conduction. A circulation fan drives the airflow to circulate along a preset path in the sealed space, the path passing through the light source module and the cooling source fin duct; The external heat dissipation unit includes a hot end of a semiconductor refrigeration plate and an external heat dissipation device, which is used to discharge the heat conducted by the internal circulation heat dissipation unit to the external environment.

2. The light source system according to claim 1, wherein: The light source module includes an excimer lamp tube and a lamp tube shell that accommodates the excimer lamp tube. The air inlet end of the lamp tube shell is provided with an air guide ring, which is provided with an outer vortex hole and a central inner vortex hole, respectively guiding the airflow to form vortex heat dissipation channels on the outer wall and inner wall of the excimer lamp tube.

3. The light source system according to claim 2, wherein: The sealed space is filled with hydrogen as a heat dissipation medium.

4. The light source system according to claim 1, wherein: The outer side of the heat conducting plate is covered with a heat insulating layer.

5. The light source system according to claim 1, wherein: The circulation fan includes at least two fans, which are respectively arranged on the air inlet side of the light source module and the air outlet side of the cold source fin duct.

6. The light source system according to claim 1, wherein: A light-transmitting sealing structure is provided between the light outlet of the light source module and the sealing housing.

7. The light source system according to claim 1, wherein: By real-time monitoring of the air outlet temperature of the light source module, the operating current of the semiconductor refrigeration chip and the speed of the circulation fan are dynamically adjusted to maintain the temperature of the excimer lamp within the set threshold range.

8. A closed heat dissipation method based on the light source system according to any one of claims 1 to 7, characterized in that: include: Establish an air circulation channel in a sealed space that is isolated from the external environment; The circulating fan drives the air flow through the light source module to absorb heat and guide it to the cold source fin duct for heat exchange; The cold end of the semiconductor refrigeration chip is used to cool the cold source fin air duct, while the heat is transferred to the external heat dissipation unit through its hot end; The heat is discharged to the external environment through the external heat sink.

9. The heat dissipation method according to claim 8, characterized in that: The path of the air circulation channel includes: sucking air from the air inlet side of the light source module, flowing through the light source module and carrying heat into the cold source fin duct, and returning to the air inlet side of the light source module after cooling.

10. The heat dissipation method according to claim 8, wherein: The external heat dissipation device includes heat dissipation fins and an external fan, which accelerates heat diffusion through forced convection.

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