微通道换热器安装及维修手册 Version1 1

微通道换热器的探讨微通道换热器是一种新型的换热器，其具有结构紧凑、重量轻、节能高效等特点，被广泛应用于各个领域，如电子设备散热、汽车工业、太阳能、航天航空等。

在本文中，我们将探讨微通道换热器的原理、性能优势以及未来的发展前景。

首先，微通道换热器是指在压力容器中使用微细孔隙薄板来传导热量的设备。

与传统的换热器相比，微通道换热器具有更大的表面积和更好的传热性能。

这是因为微通道换热器的通道直径通常在微米量级，增加了流体与壁面的接触面积，从而提高了传热效率。

1.结构紧凑：微通道换热器的通道直径较小，能够在有限的空间内实现更大的传热表面积。

这意味着它可以在相对较小的体积内实现相同的传热效果，从而减小了设备的体积和重量。

2.传热效率高：由于微通道换热器的通道直径小，流体与壁面的接触面积增大，导致传热均匀且快速。

此外，在微通道中，流体的流动速度较高，可以增强流体的对流传热效果。

因此，微通道换热器能够实现更高的传热系数，提高传热效率。

3.节能环保：由于微通道换热器的传热效果好，可以在相同的传热量下降低能源的消耗。

此外，微通道换热器具有结构简单、材料使用量少的特点，减少了能源和环境的耗费。

4.可扩展性强：微通道换热器的结构可以根据具体的需求进行设计和制造。

不同的通道形状和排列方式可以实现不同的传热效果。

并且，微通道换热器可以通过增加通道的数量来实现更大的传热表面积，进一步提高传热效率。

目前，微通道换热器已经在电子设备散热、汽车工业、太阳能、航天航空等领域得到了广泛的应用。

例如，在电子设备散热中，微通道换热器可以有效地降低电子元件的温度，提高其工作稳定性和寿命。

在汽车工业中，微通道换热器可以替代传统的散热器，减小汽车发动机的体积和重量，提高燃油利用率。

在太阳能领域，微通道换热器可以将太阳能转化为热能，提高太阳能利用效率。

在航天航空领域，微通道换热器可以应用于航天器和航空发动机中，提高其工作效率和可靠性。

虽然微通道换热器具有很多优势，但目前仍存在一些挑战和问题1.制造难度高：由于微通道换热器的通道直径较小，制造过程中需要使用微米级的加工技术。

微通道换热器的特性分析及应用微通道换热器是一种用于传热和热力转换的新型换热技术。

相比传统换热器，微通道换热器具有体积小、传热效率高、响应速度快、能耗低等优点，被广泛应用于汽车、电子设备、航空航天等领域。

本文将对微通道换热器的特性及应用进行分析。

首先，微通道换热器的特性主要包括以下几个方面：1.尺寸小：微通道换热器采用微细通道设计，通道尺寸通常在10微米至1毫米之间。

相比传统换热器，微通道换热器的体积更小，可以实现高功率密度的换热，适用于对空间有限的系统。

2.传热效率高：微通道换热器的微细通道结构可以增加表面积，提高换热效率。

此外，微通道换热器采用微尺度流体，流体在通道内流动时，流体与通道墙面之间的质量传递和能量传递更为充分，传热效率更高。

3.响应速度快：微通道换热器由于尺寸小、结构简单，使得其对温度变化的响应速度更快。

这对于一些需要快速热传导或需要快速控制温度的应用场合非常重要。

4.能耗低：由于微通道换热器的传热效率高，可以实现在相同传热量的情况下，节约能源消耗。

这对于一些对能源效率要求高的应用来说，具有重要意义。

其次，微通道换热器的应用领域非常广泛，具体包括以下几个方面：1.汽车领域：由于微通道换热器具有尺寸小和传热效率高的特点，因此被广泛应用于汽车的冷却系统中。

微通道换热器可以有效减小汽车发动机冷却系统的体积和重量，并提高冷却效果。

2.电子设备领域：随着电子设备的不断发展，其集成度和功率密度越来越高，导致热管理成为一个重要问题。

微通道换热器作为一种非常有效的热管理技术，可以用于电子设备的散热和温度控制。

3.航空航天领域：在航空航天领域，微通道换热器可以用于飞机发动机的冷却、热交换器的制造等方面。

微通道换热器可以在有限的空间内实现高效传热，并提高飞机的整体效能。

4.化工工艺领域：微通道换热器不仅可以在传统化工工艺中用于传热，还可以用于多相反应、气体/液体分离等工艺过程中。

微通道换热器可以提高化工反应的效率和产能。

安装、使用、维护手册一、安装说明1、设备安装，应请熟悉该系统工艺的工程技术人员指导，按照本说明书和产品质量证明书及其系统工艺特点，确定安装工艺方案。

2、设备应安装在坚硬的水泥基础地面上，地面应设有地漏下水道。

换热器周围应留有足够的空间，以便观察和检修。

3、安装之前应清洗管道系统，不得有泥砂、杂物等存留其中；检查换热器在运输中是否损坏，是否有大杂物落入管口中。

4、在安装中，应考虑尽量利用管道的走向吸收热膨胀，并且安装要水平、对正，不能产生附加应力，以免对设备造成不利影响。

5、在安装管路的最高点应设有排气阀，充水时将管路内的空气排出。

在管路的最低点应设有排放阀，可以用来排放积水。

在换热器的进出管路上应加装温度计和压力表，以便在运行时观察其工况。

6、设备安装完毕，应检查换热器的各个夹紧螺母是否有松动现象，如有将其拧紧，并对设备与系统应进行水压试验。

7、水压试验完毕，应对设备进行保温。

二、操作运行1、开机时，先打开冷侧介质阀门，并排出空气，再打开热侧介质阀门，关时反之。

开关阀门应慢速进行；对于通过减压阀之后再进入换热器的系统，开机时，应最后打开减压阀后的阀门，关机时相反；当两侧介质有压差时，须先打开压力低的一端介质阀门后，方可打开另一侧介质阀门。

2、先将出口阀开1/4，再开1/2，再到全开，使换热器内部充满介质。

3、将入口阀开启1/4再启动泵，泵启动后再将入口阀开启1/2后，再全开，贸然开阀会造成热交换器损坏。

4、必顺在产品铭牌规定参数以下运行，不得超压超温使用。

5、当介质是水－水换热时，热水一侧，热水是从换热器的接口进入，从下端口排出；冷水一侧，冷水主要从换热器的下端接口进入，从上端接口排出。

这样做是为了在换热器内部冷热相邻热流道介质的流向相反，即“逆流”换热，这样可使换热器的冷热换流道在传热过程中始终保持较为均衡温差，以利于换热。

6、当介质是蒸汽－水换热时，蒸汽要从换热器的上端接口进入，下端接口排出冷凝水，换热器的热侧要单流程组装，在冷凝水出口上不要加装疏水器，以便让冷凝水自由排出。

User manualInstallation, Operation and Maintenance ManualAPP pumps (APP 21-43)Service guideMicroChannel Heat Exchangers MCHEInstallation and Maintenance Guide Sevice guide | Application, Installation and Maintenance Manual MCHE2 |AX292455807588en-000101 | 01.2019Table of ContentsTable of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 .1 G eneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 .2 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 . Storage and working environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 .1 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 .2 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 .3 Bending procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 . Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 .1 Pass arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 .2 Fan location and size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 .3 Coil mounting against thermal expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73 .4 Elimination of gaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83 .5 Prevention of galvanic corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83 .6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94 .Leak repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95 . Coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106 .1 Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106 .2 Shut down periods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106 .3 Cleaning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..10Service guide | Application, Installation and Maintenance Manual MCHE3AX292455807588en-000101 | 01.2019 |1.1 Gener a lThis guide is for installation and maintenance of Danfoss Microchannel Heat Exchangers (MCHEs) . We recommend that you read this manual carefully before commencing any work .Danfoss is not responsible or liable for any damage caused by failure to comply with the instructions in this manual and/or due to incorrect installation, operation and mainte-nance of MCHEs .All personnel being responsible for operation and maintenance of theeat exchanger unit must read and fully understand these instruc-tions before:• Transportation of the MCHE unit • Lifting the unit• Installing the MCHE unit •S ervicing the MCHE unit • Maintaining the MVHe unit•1.2 Gener alI ndicates something to be noted by thereaderI ndicates a situation which will or could result in personal injury and/or damage to the MCHE1. IntroductionSevice guide | Application, Installation and Maintenance Manual MCHE4 |AX292455807588en-000101 | 01.20192. Storage and workingenvironments• Microchannel heat exchangers should bestored indoors in a dry and clean environ-ment .• The storage temperature range is -40 °C to 121°C (-40°F to 250°F) .•Metal chips, and/or copper or steel dust can cause galvanic corrosion, so storage and installation areas must remain clean and separate from machining or welding areas . Use separate tools and/or keep tools clean .•To minimize potential damage, we recom-mend that you keep MCHEs in their original packaging until they are installed in the air conditioning or refrigeration equipment . •Improper storage and stacking of MCHEs can cause premature corrosion or deforma-tion and will reduce MCHE’s life . Extra care should be taken when storing MCHEs!• Refrigerants used in MCHE shall comply with AHRI Standard 700 .•The maximum operating pressure shall not exceed the value shown on the Label of MCHE .2.1 Stor a ge2.2 H a ndlingCompared to tube & fin coils, microchannel heat exchangers are relatively light, the fins are harder to bend and they are less likely to cut fingers . The combination of these features makes MCHEs easier to handle than tube & fin coils . However, the overall coil assembly is made of soft alu-minum, so it is susceptible to deformation (Fig .1)Fig . 1 Handling attentions2.3 Bending procedureThe same bending machines can be used for MCHE and tube & fin heat exchangers . In order to optimize costs associated with shipping and packaging, we recommend that MCHEs be shipped flat and formed at the customer’s location .Bending Radius:The minimum bend radius required to achieve acceptable manufacturing yields is a function of the microchannel tube, fin, and alloy, the overall capabilities of the bending equipment including, fixturing, bending speed and bending length .NOTE: Conducting trial bending runs of thespecific coil and configuration are recommended to verify . In general, tighter radius, thicker tubes and longer bend lines are harder to bend . Use a larger radius if possible .Recommended minimum bending radii (as determined by factory tests under favorable conditions) are shown in Table 1 for different microchannel tubes and fins . Consult with Danfoss for the tubes not listed . Do notarbitrarily extrapolate or interpolate the values .•Never lift a MCHE by the inlet and outlet tubes as it might result in dimensional deviation or worse yet, the initiation of a crack that can later result in a leak .• Do not hit or drop MCHE on edges . The MCHE is constructed of soft aluminum therefore, dropping, striking, placing heavy objects on top of, or stepping on any part of the heat exchanger will likely cause a deformation . If the coil becomes slightly deformed or bowed, it is possible to flatten them back out by laying them concave side down on a flat hard surface and applying pressure via a large heavy flat plate (say 3-4 square feet of ½” non-metallic sheet, such as plywood or plastic, with a couple of handles attached) . This procedure works for bowed coils with flush fins, but not for local fin protrusions .Table 1Service guide | Application, Installation and Maintenance Manual MCHE5AX292455807588en-000101 | 01.2019 |Consider the following during bending:• MCHEs are constructed of soft aluminumand are susceptible to deformation during handling . Prior to bending operation, make sure the MCHE is flat, square and undam-aged . Consider a sizing operation to ensure this .• Make sure the coils are loaded into thebender in a way that keeps them flat square and undamaged . • Keep the flat tubes perpendicular to thespindle while bending the coil .• Clamp the coil during the bending process,being careful not to crush it . • Slower bending speeds will often yieldbetter results .• Vertical spindle bending machines are oftenset up so that the microchannel coil ends up sliding along the table with all its weight supported by the header ends and/or the bottom dead tube .During the bending operation, do not let one end of the coil become cantilevered off the edge the table, because this can cause the coil to droop with the tubes being non-perpendicular to the spindle, resulting in corkscrewing or reduced bend quality and/or consistency . Note that with some benders, a portion of the supporting table will drop down during bending, creating opportunities for cantilever loads and improper bending .•Bending multi-bend coils on a horizontal spindle bender can cause cantilevered loads resulting from the dead weight of the unsupported bent legs . As an example, a coil with three (3) bends, depending on fixturing, may result in the load of the first 75% of the coil being transferred into the remaining coil leg, possibly causing poor bend quality and/or permanent deforma tion . Bending challenges are greater with MCHE’s than similar fin and tube coils, requiring proper fixturing .3. Inst a ll a tion 3.1 Pass arrangementCarefully identify the locations of the inlet andoutlet tubes . Microchannel condensers is often designed with multiple passages (parallel flow) that have fewer tubes in each successive pass (Fig . 2)Danfoss MCHEs include a small notch in both headers to indicate that this is the bottom of the heat exchanger . Additionally, a product label is placed on the outermost tube (unless specified elsewhere by the customer), indicating the top of the heat exchanger .Incorrectly connecting the inlet and outlet tubes of a MCHE will likely result in excessive refrige-rant side pressure drop and poor heat transfer .Fig . 2 MCHE passes distribution3.2 Fan location and sizeAir distribution may have an influence on the performance of the MCHE . For good air distribu-tion choosing a fan with proper fan diameter and keeping a constant distance between the coil and the fan is desirable . We recommend selecting a fan diameter that is as close as possible to the smallest of MCHE height and length . The distance between MCHE and fan is )recommended to be at least 15 times the width/depth of MCHE coil when possible (Fig .3) .Fig . 3 Fan location and sizeSevice guide | Application, Installation and Maintenance Manual MCHE6 |AX292455807588en-000101 | 01.20193.3 Coil mounting against thermal expan- sionThermal expansion of aluminum is higher than most other metals . Frequent thermally induced stress could shorten the life of the micro channel heat exchanger (Fig .4)Fig . 4 Coil mounting for MCHETo avoid the risk of thermal expansion, a micro channel heat exchanger must be mounted with brackets that allow some flexibility of movement . Mounting methods as indicated in Figures 5a and 5b are recommended .Fig . 5b Mounting by end plateInlet/outlet connections are not designed to be used as handles, support mating tubes, resist with mating tubes during assembly, etc . In particular:• not exposed to stress/tension . (Fig .6)aluminum inlet/outlet tubes and/orforcing is required during installation .Fig .6 Inlet/Outlet connection attentionsService guide | Application, Installation and Maintenance Manual MCHE7AX292455807588en-000101 | 01.2019 |Plastic heat shrink tubing prevents galvanic corrosion in the MCHE’s copper to aluminum joint by keeping moisture from entering the area . A minimum of 70mm length from the Cu/Al joint to the connection point is required to protect the Cu-Al brazing joint and plastic shrink tube from excessive heat during the brazing process . When brazing copper piping to the MCHE, it is recom-mended to use dry nitrogen purging along with a heat sink and/or wrapping the copper stub tube with a wet cloth to protect the Cu/Al joint and heat shrink tubing from excessive heat . This also applies to microchannel heat exchangers with aluminum inlet/outlet tubes . Depending on the location of the connections relative to the heat exchanger, a heat shield may be required to protect the MCHE’s tubes and fins from the brazing torch . The recommended pipe length “L” after the brazing joint should be greater than or equal to 70mm as shown in the picture below (Fig .7) .Fig . 7 Recommended length of inlet/outletconnections3.4 Elimination of gapsTo maximize heat transfer performance, gaps should be eliminated on both sides of the face of the MCHE . Gaps should also be eliminated on the top, bottom and sides of the MCHE so that all fan induced air is directed over the coil surface . This can be accomplished with sealing strips as shown in Fig . 8 .Fig . 8 Typical installation3.5 Prevention of galvanic corrosion Aluminum is a chemically reactive metal and will corrode when combined with most metals that are used today in industrial manufacturing . To avoid any galvanic corrosion, it is necessary to separate Al and other metals . The best way to prevent galvanic corrosion is to use plastic/rubber/foam as a means to isolate the aluminum coil from dissimilar metals (Fig 8)Sevice guide | Application, Installation and Maintenance Manual MCHE8 |AX292455807588en-000101 | 01.20193.6 Vibr a tionVibration that exceeds a specific range maycause the failure of MCHE . To avoid failure due to vibration:•Make sure vibration level meet require-ments as in table 2 .Table 2 The allowable vibration rangesService guide | Application, Installation and Maintenance Manual MCHE9AX292455807588en-000101 | 01.2019 |5. Co a tingCoating of a heat exchanger could increase corrosion resistance in certain applications and/or environmental conditions such as coastal or industrial areas, as well as situations with stagnant water or extreme wet conditions . Danfoss approved coating systems provide a controlled process for the cleaning, rinsing, and the application of the coating material with full and even coverage . Untested coating systems may not adhere properly to the aluminum surface due to the flux residue left on thealuminum surface after brazing . In addition, any small area not covered by the coating couldpotentially pose a risk of failure due to corrosion . Thermal performance may also be reduced by improper application of the coating resulting in clogging or bridging between the fin and louversWARNINGSField applied coatings are not recommended for brazed aluminum MicroChannel heat exchang-ers .Danfoss MicroChannel heat exchangers must NOT be coated using any other coating, but the ones specifically approved by Danfoss, such as certain qualified e-coating (epoxy based electrophoretic coating) suppliers or similar high-quality coating technologies . Coating of a coil using a supplier or coating process notapproved by Danfoss voids the product warranty . It may also reduce the lifetime and/or the performance of the MicroChannel heat exchanger . Consult your Danfoss Sales &Application representative for more information .6. M a inten a nceFrequent servicing is essential to maintainingthe required MCHE performance . For everyinstalled Danfoss MCHE, service records must be documented .CAUTIONPrior to servicing the MCHE, be sure to discon-nect the power supply and use lock-outmethods to prevent the power from acciden-tally being turned on .6.1 FiltersDanfoss recommends the use of air filters on the frontal face of the MCHE to lower the deposition of rain water and other contaminants that can collect on the surface of the tubes .6.2 Shut down periodsDuring periods when the MCHE is not operated for longer than a week, the MCHE must be completely cleaned following the cleaningprocedure . This practice must also be performed during short shut-down periods where corrosive deposits accumulate on the MCHE .6.3 Cleaning procedureRelative to tube & fin heat exchangers, Micro-Channel heat exchanger coils tend to accumu-late more dirt on the surface of the coil and less dirt inside the coil, making them easier to clean . Follow the steps below for proper cleaning:Step 1: Remove surface debrisRemove surface dirt, leaves, fibers, etc . with a vacuum cleaner (preferably with a brush or other soft attachment rather than a metal tube),compressed air blown from the inside out, and/or a soft bristle (not wire!) brush . Do not impact or scrape the coil with the vacuum tube, air nozzle, etc .Step 2: RinseRinse only with water . Do not use any chemicals (including those advertised as coil cleaners) to clean MicroChannel heat exchangers, as they may cause corrosion .Hose the MCHE off gently, preferably from the inside-out and top to bottom, running the water through every fin passage until it comes outclean . The fins of MicroChannel coils are stronger than traditional tube & fin coil fins but still need to be handled with care . Do not hit the coil with the hose . We recommend placing your thumb over the end of the hose rather than using the end of the nozzle to obtain a gentler spray and reduce the possibility of impact damage .We do not recommend using a pressure washer to clean the coil due to the possibility of damage .Warranty claims related to cleaning damage, especially from pressure washers, or corrosion resulting from chemical coil cleaners, will NOT be honored .Step 3: Blow dryDepending on the installation and fin geometry, MicroChannel heat exchangers could possibly retain more water compared to traditional tube & fin coils . It is advised to blow off or vacuum out the residual water from the coil to speed up drying and prevent pooling .Danfoss recommends a quarterly cleaning of the coils, as the minimum . The cleaning frequency should be increased depending on the level of dirt/dust accumulation and the environment (e .g ., coastal areas with chlorides and salts) orindustrial areas with aggressive substances .Danfoss MicroChannel Heat Exchangers (Jia Xing) Co ., Ltd .No . 8, Sangdelan Road, Wuyuan Street,Haiyan, Zhejiang Province314300 P .R . Chinawww .danfoss .com© Danfoss | DCS (im) | 2019.01AX292455807588en-000101 | 10。

专利名称：一种微通道换热器及换热系统专利类型：实用新型专利
发明人：杨帅朋,李雄林
申请号：CN202122719693.8
申请日：20211108
公开号：CN216205480U
公开日：
20220405
专利内容由知识产权出版社提供
摘要：本申请涉及一种微通道换热器及换热系统，微通道换热器的换热组件包括：第一管、第一件和保持件，第一管包括第一周壁和第一腔，围成第一腔的壁包括第一周壁，第一周壁包括内壁面和外壁面；至少部分第一件位于第一腔内并在第一管的长度方向上具有长度；至少部分保持件位于第一腔内，保持件包括贯穿第一件的第一孔道，部分第一件位于第一孔道内，保持件包括第一侧壁，第一侧壁包括第一侧壁面，第一侧壁面与第一周壁连接；在第一管的任一横截面上，保持件的第一侧壁面的最大投影长度为L1，第一周壁的内壁面的最大投影长度为L2，且0.6lt;L1/L2lt;0.9。

通过保持件对第一件进行支撑固定，有利于组件内部结构固定，并提高换热器的换热性能。

申请人：杭州三花微通道换热器有限公司
地址：310018 浙江省杭州市钱塘区白杨街道12号大街289-1号
国籍：CN
代理机构：北京汇思诚业知识产权代理有限公司
代理人：彭伶俐
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