Laird Thermal Systems 341-Watt Thermoelectric Coolers for Handheld Cosmetic Laser Applications
Introduction
Handheld lasers have become a standard device in cosmetic surgery and medical spa applications. Handheld cosmetic lasers offer a wide range cosmetic benefits with minimal damage to the body and reduced patient recovery time. Even though thousands of microscopic laser beams make pinpoint contact with the skin, the process does not affect the surrounding tissue. However, lasers generate a significant amount of heat that must be quickly and efficiently dissipated to protect the patient and the laser electronics. Thermoelectric Coolers deliver active cooling to move heat more efficiently and reliably compared to other temperature control solutions.
Application Overview
Surgeons have traditionally used handheld lasers in medical procedures for ultra-precise tissue incisions, ablation or coagulation. These virtually bloodless procedures minimize thermal damage to the surrounding tissue and decrease recovery time. These benefits have led to handheld lasers being used in a variety of cosmetic procedures including skin care, fat reduction, hair removal, and tattoo removal. Handheld cosmetic laser systems are simple and user-friendly with pre-set operating parameters that reliably produce both superficial and deep skin treatment with excellent precision.
There are two main types of lasers used for cosmetic procedures. Ablative lasers remove the surface of the skin and can result in scabbing, significant downtime, and some discomfort. Non-ablative lasers don't break the surface of the skin and are generally a gentler option, leaving mild redness and irritation.
Cosmetic laser engines consist of a high-efficiency laser, heat-spreader, convection cooling device, and optical lensing element, all contained within a radial heatsink shell. The laser engine is constructed to disperse as much heat as possible to allow for longer operating times at maximum power.
Many more advanced handheld cosmetic lasers provide direct cooling to the skin as the laser treats the patient. The cooling capability requires a separate cooling mechanism from what is used for cooling the laser.
Application Cooling Requirements
Handheld lasers generate a significant amount of waste heat that can affect the lasers' performance when in operation. Manufacturers face several thermal management design challenges such as temperature stability, space constraints, vibration, and reduced power consumption.
Waste heat significantly affects the performance of a laser and must be efficiently dissipated away from the sensitive laser components. Heat generated by the handheld laser can range from as little as 5 Watts to more than 200 Watts depending on the application. For optimal performance, the laser requires a stable operating temperature of 20℃± 0.5℃, while ambient temperature may fluctuate in room temperature environment.
The thermal stability is particularly challenging because of the form factor restrictions of the cosmetic handheld laser. The miniaturization of handheld lasers has led engineers to pack more electronics into a smaller footprint. More electronics increase functionality, like combining skin cooling with skin treatment, however, it also increases the complexity of the thermal solution. As a result, the thermal components must provide advanced thermal control and route heat dissipation through tight geometric space constraints. As this is a handheld device, components must also be able to withstand shock and vibration to ensure low maintenance and long-life operation. To further reduce operating costs, thermal management solutions with low power operation are preferred.
In addition to cooling the laser, it is also important to cool the patient’s superficial layers of the skin to protect the epidermis and prevent thermal injury. Cooling can be achieved by cold air convection, contact cooling or cryogen spray (dynamic) cooling. Contact cooling is considered the ideal method of cooling, More sophisticated cosmetic lasers feature an imbedded contact cooling device to reduce pain and erythema to increase patient comfort during the procedure.
Thermoelectric Coolers
Thermoelectric coolers are active solid-state heat pumps that operate via the Peltier effect. These thermoelectric coolers, often referred to as Peltier coolers, utilize a heat exchanger to move heat efficiently to protect laser components and improve performance. Thermoelectric coolers are designed with size, efficiency, cost, and continuous reliable operation in mind to enable long-life operation and meet design challenges. With no moving parts, choosing solid-state Thermoelectric coolers increases reliability and durability in high-shock and -vibration applications like handheld cosmetic lasers. These active cooling devices also contribute to reduced operational noise levels. Thermoelectric coolers do not require liquid cooling lines to run to the handpiece or noisy chillers in the doctor’s office. Overall, thermoelectric coolers significantly decrease maintenance, operation, and total cost of ownership.
During operation, DC current flows through the thermoelectric cooler to create heat transfer and a temperature differential across the ceramic surfaces, causing one side of the thermoelectric cooler to be cold, while the other side is hot. A single-stage thermoelectric cooler can achieve temperature differentials of up to 70℃ and transfer heat at a rate of up to 230 watts in a 40 x 40 configuration. In order to increase the amount of heat pumping capacity, the thermoelectric coolers can be wired side-by-side into a thermoelectric array.
Thermoelectric coolers are composed of two ceramic substrates that serve as electrically insulating materials and house P-type and N-type semiconductor elements. Heat is absorbed at the cold junction by electrons as they pass from a low-energy level in the P-type element onto a higher energy level in the N-type element. At the hot junction, energy is expelled to a thermal sink as electrons move from a high-energy element to a lower-energy element.
Reversing the polarity changes the direction of heat transfer. Thermoelectric coolers are rated at maximum parameters (∆Tmax, Imax, Vmax, and Qmax) under no load conditions, with temperature control accuracy achieving ±0.01℃ under steady-state conditions. They can reach a temperature of -100℃ (6-stage) and pump up to 15 watts per centimeter square of heat, by wiring thermoelectric coolers into an array. Thermoelectric coolers are available in sizes from 2x2 mm to 62x62 mm and work much more efficiently in heating mode than resistant heaters. Unlike traditional compressor-based technologies, thermoelectric coolers can be mounted in any orientation and fit into tight geometric space constraints.
Themoelectric coolers can also be embedded into the handpiece of a cosmetic laser to cool the patient’s skin and prevent thermal injury. The thermoelectric devices cool sapphire metal or glass plates integrated into the end of the handpiece. Sapphire tip cooling, or chill tip cooling, delivers active cooling throughout the cosmetic procedure (pre-, during- and post-cooling).
Laird Thermal Systems Solutions
Laird Thermal Systems’ Ceramic Plate (CP) Series is a rugged, compact thermoelectric cooler designed for higher current and large heat-pumping applications like handheld cosmetic lasers. Placed next to the laser, the CP Series direct-to-air configuration offers a maximum cooling power of up to 125 Watts with a temperature difference (ΔT) of 67℃ in a small form factor of 62 mm x 62 mm x 4.6 mm or smaller. The CP Series is available in a wide range of heat pumping capacities, geometric shapes, and input power ranges to meet handheld laser requirements.
The UltraTEC Series thermoelectric cooler has a heat pumping capacity of up to 341 watts, which is ideal for ablative cosmetic lasers. The cooler is assembled with a large number of semiconductor couples to achieve a higher heat pumping capacity than standard single stage TEMs. The UltraTEC Series thermoelectric cooler not only offers high heat pump density, but precise temperature control to within ± 0.01℃. With a Q Max @ temperature rating of 341W@25℃, the UltraTEC ensures the laser system will not overheat.
Conclusion
Thermoelectric coolers provide superior temperature stabilization to maintain the peak performance of a handheld medical cosmetic laser. Through the Peltier effect, thermoelectric coolers deliver solid-state operation, low maintenance, and long service life. Thermoelectrics also make an excellent thermal management solution due to compact size no vibration and low total cost of ownership. This cannot be accomplished by any other means without a complex heating and cooling system.
Applications
Medical
Medical Lasers
Product Section
Thermoelectric Coolers
CP Series
UltraTEC™ Series
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本文由Ray转载自Laird Thermal Systems Official Website，原文标题为:Thermoelectric Coolers for Handheld Cosmetic Lasers，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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Laird Thermal Systems（莱尔德热系统）热电冷却器选型指南（中文）
目录- 公司简介和产品介绍 热电冷却器 表面处理选项和热管理大师
型号- 430478-502,HTX20-31-F2A-0909-11-W2.25,64979-501,CP085-127-06-L1-W4.5,UTX15-24-F2-5252-TA-W6,CP14-31-10-L1-W4.5,ETX7-3-F1-2020-TA-RT-W6,9360001-301,7050045-502,71061-504,ETX14-12-F1-6262-TA-W6,UTX6-24-F1-5555-TA-W6,HTX15-31-F2A-0909-TB-W2.25,PCX7-156-F2-1672-TA-RT-W6,387008429,SH08-28-05-L1-W4.5,PCX6-12-F1-4040-TA-RT-W6,ULTRATEC™ UTX SERIES,CP14-71-10-L1-W4.5,PCX8-12-F1-4040-TA-W6,9340006-301,PCX7-16-F1-4040-TA-W6,ETX4-7-F1-2323-TA-W6,71092-501,ETX15-28-F2-5252-TA-RT-W6,387008431,CP14-127-10-L1-W4.5,387007103,CP14-35-045-L1-W4.5,ETX4-7-F2-3030-TA-RT-W6,430705-503,387007106,387007227,387007108,HTX12-65-F2A-1312-TB-RT-W2.25,OPTOTEC™ HTX,430874-503,71062-514,387007231,CP08-63-06-L1-W4.5,387007112,387007113,9350004-301,387007115,430052-501,387007117,MS5-257-10-15-11-W8,ETX2.5-12-F1-3030-TA-RT-W6,CP08-127-05-L1-W4.5,PCX10-223-F1-3172-TA-RT-W6,HITEMP ETX SERIES,CP14-127-045-L1-W4.5,430922-501,387007120,387007123,387007122,9320002-301,MS3-119-20-15-11-W8,ETX11-12-F1-4040-TA-RT-W6,MS SERIES,56760-505,ETX15-12-F2-4040-TA-RT-W6,MS2-192-14-20-11-18-11-W8,ETX6-12-F1-4040-TA-RT-W6,56590-502,SH10-23-06-L1-W4.5,71036-505,56610-502,MS4-108-10-20-11-W8,ETX4-12-F1-3030-TA-W6,430027-501,PCX12-248-F1-5040-TA-RT-W6,PT4-7-F2-3030-TA-W6,430848-502,OTX12-65-F2A-1312-11-W2.25,430848-504,PCX8-7-F2-3030-TA-RT-W6,MS2-068-14-14-15-15-11-W8,CP14-71-045-L1-W4.5,OTX20-66-F0-1211-11-W2.25,PCX4-6-F1-2040-TA-RT-W6,HTX,PCX5-16-F1-4040-TA-W6,56430-501,OTX19-23-F1N-0608-11-W2.25,HTX SERIES,UTX9-28-F2-4040-TA-W6,PCX15-7-F1-4040-TA-RT-W6,PT4-12-F2-3030-TA-W6,CP12-161-04-L1-W4.5,16506-302,PCX8-6-F1-2040-TA-RT-W6,430875-503,ETX4-3-F1-2020-TA-RT-W6,43280-503,66100-501,66156-505,71063-505,44440-501,71020-505,56550-501,MS3-052-10-17-11-W8,387004692,387005660,SH10-125-05-L1-W4.5,71012-506,387005662,ETX2.3-4-F1-1919-TA-RT-W6,ETX5-6-F1-2040-TA-RT-W6,387005663,ETX4-12-F2-4040-TA-RT-W6,387005664,387004697,387005665,387005667,387005669,OTX12-66-F0-1211-11-W2.25,430097-507,ETX2.6-12-F1-2525-TA-W6,PCX9-3-F2-2525-TB-RT-W6,387005671,387005672,MS2-102-22-22-17-17-11-W8,387005673,387005674,387005676,387005677,387005678,387005679,387005318,CP10-254-06-L1-W4.5,ETX9-3-F2-2525-TA-W6,CP10-71-05-L1-W4.5,430026-503,430511-504,56910-502,OTX20-66-F0-1211-11-EP-W2.25,387006650,387005681,56995-501,387006891,387005683,ETX6-19-F1-4040-TA-RT-W6,CP10-31-05-L1-W4.5,387006893,387005685,387005686,387006897,387006534,HTX15-30-F2A-0610-11-W2.25,OTX12-65-F2A-1312-TB-W2.25,RH14-14-06-L1-W4.5,ETX2-12-F2-3030-TA-W6,PCX8-6-F1-3518-TA-RT-W6,MS2-102-14-14-17-17-11-W8,387006784,UTX15-288-F2-5252-TA-W6,387005696,387006544,387005698,387005699,ETX4-12-F1-4040-TA-RT-W6,SH14-125-10-L1-W4.5,CP14-71-06-L1-W4.5,9340001-301,HTX12-18-F2A-0606-11-RT-W2.25,387006791,387006795,CP2-127-10-L1-W4.5,387006798,63604-511,PCX6-24-F1-5555-TA-RT-W6,CP14-199-06-L1-W4.5,OTX20-65-F2A-1312-11-W2.25,UTX,PCX5.6-19-F1N-3030-TA-RT-W6,ETX15-24-F2-5252-TA-W6,MS3-231-10-15-11-W8,SH14-125-045-L1-W4.5,POWERCYCLING PCX,62910-510,PCX24-128-F2-5555-TA-RT-W6,387005354,HTX15-65-F2A-1312-TB-W2.25,POWERCYCLING PCX SERIES,CP10-131-04-L1-TOW-W4.5,OTX08-18-F0-0505-11-W2.25,HTX12-18-F2A-0606-GG-W2.25,CP14-199-045-L1-W4.5,CP2-71-06-L1-W4.5,ETX4-6-F2-2143-TA-RT-W6,OTX20-68-F1A-1313-11-W2.25,OPTOTEC™ OTX SERIES,71212-502,CP SERIES,CP2-31-06-L1-W4.5,POLARTEC™ PT SERIES,63595-501,PCX4-4-F1-1515-TA-RT-W6,ETX8-12-F2-2525-TA-RT-W6,HTX12-65-F2A-1312-11-W2.25,OTX08-31-F1-0707-11-RT-W2.25,PT8-12-F2-4040-TA-W6,ETX4-12-F2-3030-TA-RT-W6,CP10-71-06-L1-W4.5,OTX08-66-F0-1009-11-RT-W2.25,CP14-17-10-L1-W4.5,ETX3-3-F2-1518-TA-W6,ETX11-12-F2-3030-TA-RT-W6,PCX4-7-F1-2020-TA-RT-W6,387004970,MS2-190-10-10-12-12-11-W8,387005700,ETX2.5-12-F1-4040-TA-RT-W6,CP10-127-06-L1-W4.5,9340002-301,OPTOTEC HTX 系列,MS2-065-04-04-11-11-11-W4,9350007-301,71049-501,POLARTEC™ PT,387006926,PT4-12-F2-4040-TA-W6,387006928,387006927,PCX11-12-F2-3030-TA-RT-W6,RH14-32-06-L1-W4.5,MS2-051-22-25-22-25-11-W8,MS4-115-14-15-11-W8,ETX14-3-F1-3030-TA-RT-W6,PCX8-176-F2-7528-TA-RT-W6,SH14-15-06-L-W4.5,PCX7.5-13-F1-4023-TA-RT-W6,OTX15-68-F1A-1313-11-W2.25,CP2-127-06-L1-W4.5,ETX6-7-F2-3030-TA-RT-W6,OTX08-08-F0-0303-11-W2.25,PCX6-28-F2-4040-TA-RT-W6,44530-501,MS2-049-10-10-15-15-11-W8,16503-310,UTX8-288-F2-5252-TA-W6,475010-313,ETX3-48-F1-1212-GG-W6,ETX2.6-6-F1-1225-TA-W6,OPTOTEC HTX,UTX6-19-F1-4040-TA-W6,OPTOTEC OTX 系列,430436-504,OPTOTEC™ OTX,387006832,UTX SERIES,387006834,387006836,387006837,9350006-301,387006839,HTX20-65-F2A-1312-11-W2.25,9380001-301,MS3-070-20-25-11-W8,9340003-301,MS2-192-14-20-15-25-11-W8,MS4-129-10-15-11-W8,PCX2-12-F1-3030-TA-RT-W6,ETX2-6-F1-1225-TA-RT-W6,ETX4-3-F1-1515-TA-RT-W6,387006845,387005513,387005514,387006847,387005515,387005516,ETX25-12-F1-6262-TA-W6,ETX1.6-12-F2-3030-TA-RT-W6,OTX12-66-F0-1211-TB-RT-W2.25,430023-507,9350001-301,HITEMP ETX,387004679,57180-501,CP10-63-06-L1-W4.5,PCX4-139-F1-1850-TA-RT-W6,71035-505,UTX8-12-F2-2525-TA-W6,430474-501,MS2-107-10-10-12-12-11-W8,UTX11-12-F2-3030-TA-W6,ETX8-12-F1-4040-TA-RT-W6,387004680,ETX6-3-F1-2020-TA-RT-W6,387004685,38700
莱尔德热力系统应用笔记：培养箱的加热和冷却
描述- 本资料主要讨论了孵化器腔室的加热和冷却技术，特别是针对细胞和组织培养的实验室和医院环境。资料强调了精确控制温度、湿度和气体浓度对于细胞培养的重要性，并探讨了传统冷却系统（如水套和压缩机）的局限性。资料介绍了热电技术作为替代方案的优势，包括高效、环保和紧凑的设计。此外，还详细介绍了Laird Thermal Systems提供的热电冷却器、模块和温度控制器，以及它们在孵化器设计中的应用。
型号- SAAX-175-24-22,PR-59,SDAX-220-24-02,SR-54,SLAX-215-24-02
Laird Thermal Systems（莱尔德热系统）热电冷却器选型指南（英文）
型号- 430478-502,HTX20-31-F2A-0909-11-W2.25,64979-501,CP085-127-06-L1-W4.5,UTX15-24-F2-5252-TA-W6,CP14-31-10-L1-W4.5,ETX7-3-F1-2020-TA-RT-W6,9360001-301,7050045-502,71061-504,ETX14-12-F1-6262-TA-W6,PCX SERIES,UTX6-24-F1-5555-TA-W6,HTX15-31-F2A-0909-TB-W2.25,PCX7-156-F2-1672-TA-RT-W6,387008429,SH08-28-05-L1-W4.5,PCX6-12-F1-4040-TA-RT-W6,CP14-71-10-L1-W4.5,ULTRATEC™ UTX SERIES,PCX8-12-F1-4040-TA-W6,9340006-301,71092-501,ETX4-7-F1-2323-TA-W6,PCX7-16-F1-4040-TA-W6,ETX15-28-F2-5252-TA-RT-W6,387008431,CP14-127-10-L1-W4.5,387007103,CP14-35-045-L1-W4.5,430705-503,ETX4-7-F2-3030-TA-RT-W6,387007106,387007227,387007108,HTX12-65-F2A-1312-TB-RT-W2.25,OPTOTEC™ HTX,430874-503,71062-514,387007231,CP08-63-06-L1-W4.5,387007112,387007113,9350004-301,387007115,430052-501,387007117,MS5-257-10-15-11-W8,ETX2.5-12-F1-3030-TA-RT-W6,CP08-127-05-L1-W4.5,PCX10-223-F1-3172-TA-RT-W6,CP14-127-045-L1-W4.5,HITEMP ETX SERIES,430922-501,387007120,387007123,387007122,9320002-301,MS3-119-20-15-11-W8,ETX11-12-F1-4040-TA-RT-W6,MS SERIES,56760-505,ETX15-12-F2-4040-TA-RT-W6,MS2-192-14-20-11-18-11-W8,ETX6-12-F1-4040-TA-RT-W6,56590-502,SH10-23-06-L1-W4.5,71036-505,56610-502,MS4-108-10-20-11-W8,ETX4-12-F1-3030-TA-W6,430027-501,PCX12-248-F1-5040-TA-RT-W6,PT4-7-F2-3030-TA-W6,430848-502,OTX12-65-F2A-1312-11-W2.25,430848-504,PCX8-7-F2-3030-TA-RT-W6,MS2-068-14-14-15-15-11-W8,CP14-71-045-L1-W4.5,PCX,OTX20-66-F0-1211-11-W2.25,PCX4-6-F1-2040-TA-RT-W6,HTX,PCX5-16-F1-4040-TA-W6,56430-501,OTX19-23-F1N-0608-11-W2.25,HTX 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冷冻离心机的帕尔贴冷却莱尔德热系统应用笔记
描述- 本文介绍了在离心机中应用Peltier冷却技术以实现精确温度控制的重要性。文章讨论了实验室离心机在热管理方面面临的挑战，如温度稳定性、空间限制、噪音水平、振动和制冷剂限制。Peltier冷却器因其高效、节能和可靠性而被推荐作为解决方案。文章详细介绍了Peltier冷却器的工作原理、规格和Laird Thermal Systems提供的具体产品系列，如Ceramic Plate (CP) Series和Tunnel Series、SuperCool X Series。此外，还讨论了与温度控制器结合使用Peltier冷却系统带来的优势，包括精确的温度控制和低噪音操作。最后，文章强调了Laird Thermal Systems在提供制冷解决方案方面的经验和专业知识。
型号- PR-59,SR-54 SERIES,SR-54
Laird Thermal Systems Launches the SuperCool X Series with Next-Gen Thermoelectric Cooling Technology
Laird Thermal Systems has launched a new high-performance thermoelectric cooler assembly series that utilizes next-generation thermoelectric coolers with advanced semiconductor materials. This enhancement boosts cooling performance by up to 10% over previous models.
【材料】最大温差72°K的UltraTEC™ UTX系列热电制冷器，泵热能力69至299W，适用于高功率激光系统
与标准半导体材料相比，Laird Thermal Systems的UltraTEC UTX系列采用先进的热电材料，具有更高的泵热能力，热泵容量提高了10%，系列中最大的型号具有高达299瓦的泵热能力，可提供更大的温差ΔTmax=72°K。
CP14-199-045 CP系列热电模块
描述- 该资料介绍了Laird Technologies公司生产的CP系列热电模块（TEMs），这是一款高性能、高可靠性的热泵产品。这些模块采用铋锑化物半导体材料和氧化铝陶瓷，适用于大电流和大热量泵送应用。产品具有精确的温度控制、紧凑的几何尺寸、固态操作无噪音振动等特点。
型号- CP14-199-045,CP SERIES
针对投影激光器的热电制冷器：莱尔德热系统UltraTEC™ UTX系列，运行噪音低，能耗降低多达50%
热电制冷器可提供局部点冷却，以保证卓越的温度稳定性，从而保持激光器和光电子器件的峰值性能。由于其固态运行，像Laird Thermal Systems UltraTEC UTX系列这样的热电冷却器可实现低维护和长寿命运行。通过在先进材料科学方面的突破，与标准热电冷却器相比，该产品系列能够提供更高的性能和更高的性能系数。
Laird Thermal Systems Offers Thermoelectric Coolers, Thermoelectric Cooler Assemblies and Temperature Controllers for Refrigerated Centrifuges
Centrifuges are crucial for separating mixtures in medical and food processing labs. They face thermal challenges like temperature stability and noise levels. Thermoelectric coolers, like those from Laird Thermal Systems, offer an efficient and reliable solution for precise temperature control in centrifuges, reducing power consumption and maintenance costs. Laird‘s CP Series and temperature controllers provide stable cooling capacities and accurate control, making them ideal for various centrifuge applications.
How do Thermoelectric Coolers work?
Thermoelectric coolers, also referred to as Peltier Coolers, are solid-state heat pumps that require DC voltage to dissipate heat using the Peltier effect. A Thermoelectric cooler consists of an array of p-and n-type semiconductor materials that are soldered between two ceramic plates. During operation, electric current flows through the module to create heat transfer and a temperature differential across the ceramic plates resulting in one cold and one hot side of the Thermoelectric cooler.
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使用FloTHERM和Smart CFD软件，提供前期热仿真模拟、结构设计调整建议、中期样品测试和后期生产供应的一站式服务，热仿真技术团队专业指导。
实验室地址： 深圳 提交需求>
提供稳态、瞬态、热传导、对流散热、热辐射、热接触、和液冷等热仿真分析，通过FloTHERM软件帮助工程师在产品设计初期创建虚拟模型，对多种系统设计方案进行评估，识别潜在散热风险。
实验室地址： 深圳 提交需求>
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