Laird Thermal Systems 341-Watt Thermoelectric Coolers for Handheld Cosmetic Laser Applications

时间： 2024-09-04 来源：Laird Thermal Systems Official Website

技术问答

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.

Thermoelectric-coolers-for-cosmetic-lasers

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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授权代理商 - 世强先进（深圳）科技股份有限公司线上商城技术资料

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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

选型指南 - LAIRD THERMAL SYSTEMS - 2022/1/18 PDF 中文下载

Laird Thermal SystemsLaunches the OptoTEC™ MBX Series, a New Line of Micro Thermoelectric Coolers for High-performance Space-constrained Optoelectronic Applications

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产品发布时间 : 2024-11-14

Laird Thermal Systems热电冷却器选型表

Laird Thermal Systems热电冷却器（半导体制冷片）选型表，提供以下选型：Qmax（W）：0.2W~321.90 W， ΔTmax（°C）：63°C~129°C， Imax（A）：0.25A~60A， Vmax（V）：0.5V~38.4V，AC Resistance（Ω）：0.17Ω~9.2Ω， Max Temperature（°C）：80°C~175°C

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型号- 1510.00,WL1500,385901-001,VRC2400,VRC4500,NRC5000,WL3004,387008451,1550.00,LA5000,WL1000,385911-015,1520.00,387009925,OW4002,385910-043,387010178,387010179,NRC2400,1505.00,38701 0181,1264.00,1155.00,1104.00,VRC1200,WW5001,387002779,NRC400,WW3001,1515.00,WL500,WL2000,387005774,387005598,OL4503,385912-029,NRC1200,385910-015

选型指南 - LAIRD THERMAL SYSTEMS - 050422 PDF 英文下载

Laird Thermal Systems（莱尔德热系统）热电冷却器选型指南（英文）

目录- Thermoelectric Coolers

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 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选型指南 - LAIRD THERMAL SYSTEMS - 2022/1/18 PDF 英文下载

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.

技术问答发布时间 : 2024-10-30

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.

产品发布时间 : 2024-06-13

【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。

产品发布时间 : 2024-02-05

Is it possible to stack Thermoelectric coolers to achieve higher temperature differential, ΔT?

Yes. The Multistage MS Series is able to reach colder temperatures than single stage thermoelectric coolers. Laird Thermal Systems offers two, three, four and five stage thermoelectric coolers that achieve temperature differentials of up to 131°C in a vacuum. The drawback is efficiency will go down with each stage.

技术问答发布时间 : 2024-10-30