WO2019109649A1 - 一种电子制冷防结露系统及其防结露方法 - Google Patents

一种电子制冷防结露系统及其防结露方法 Download PDF

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Publication number
WO2019109649A1
WO2019109649A1 PCT/CN2018/098217 CN2018098217W WO2019109649A1 WO 2019109649 A1 WO2019109649 A1 WO 2019109649A1 CN 2018098217 W CN2018098217 W CN 2018098217W WO 2019109649 A1 WO2019109649 A1 WO 2019109649A1
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Prior art keywords
electronic
temperature
test chamber
cooling
control unit
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PCT/CN2018/098217
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English (en)
French (fr)
Inventor
夏可瑜
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Dongguan City Simplewell Technology Co Ltd
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Dongguan City Simplewell Technology Co Ltd
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Priority to JP2019556362A priority Critical patent/JP6873507B2/ja
Priority to MYPI2020002386A priority patent/MY199619A/en
Priority to KR1020207016097A priority patent/KR102405777B1/ko
Priority to US16/603,591 priority patent/US11313609B2/en
Priority to RU2019129832A priority patent/RU2720928C1/ru
Priority to EP18885402.0A priority patent/EP3588237B1/en
Publication of WO2019109649A1 publication Critical patent/WO2019109649A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/002—Test chambers
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
    • G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L1/00—Enclosures; Chambers
    • B01L1/02—Air-pressure chambers; Air-locks therefor
    • B01L1/025—Environmental chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/14—Process control and prevention of errors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/14—Process control and prevention of errors
    • B01L2200/143—Quality control, feedback systems
    • B01L2200/147—Employing temperature sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/06—Auxiliary integrated devices, integrated components
    • B01L2300/0627—Sensor or part of a sensor is integrated
    • B01L2300/0663—Whole sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/10—Means to control humidity and/or other gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/18—Means for temperature control
    • B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
    • B01L2300/1822—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using Peltier elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/18—Means for temperature control
    • B01L2300/1894—Cooling means; Cryo cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

Definitions

  • the present invention relates to the field of testing equipment, and more particularly to an electronic refrigeration anti-condensation system and an anti-condensation method thereof.
  • Volatile harmful gases such as formaldehyde and volatile organic compounds (VOC) present in existing furniture, automotive supplies, etc., if the concentration of volatile harmful gases exceeds a certain range, it will cause harm to the human body.
  • Reasonable collection of volatile and harmful gases such as formaldehyde and VOC in materials is one of the important aspects of detection technology.
  • test equipment can be cooled or heated by electronic refrigeration sheets, but electronic refrigeration sheets often cause test equipment during cooling. Dew condensation appeared in the cabin, which affected the test results.
  • the object of the present invention is to overcome the above-mentioned drawbacks in the prior art, and to provide an anti-condensation measure for a refrigerating sheet, an electronic cooling anti-condensation system for refrigerating sheet redundancy control, a failure without stopping, and an anti-condensation method.
  • a first aspect of the present invention provides an electronic refrigeration anti-condensation system, including a test chamber, further comprising:
  • An electronic refrigerating sheet for cooling and/or heating the electronic refrigerating sheet being provided with at least one set, each set of electronic refrigerating sheets being respectively mounted on a bulkhead of the test chamber, and one end portion of which is radiated outside the test chamber , another part of which is fixed on the bulkhead of the test chamber or in the tank;
  • a temperature sensor for detecting the temperature of the electronic refrigerating sheet, the temperature sensor being installed on the inner side of the cabin of each group of electronic refrigerating sheets or on the inner side of the shared compartment of all the electronic refrigerating sheets or on the bulkhead or the electronic refrigerating piece Relying on the heat sink inside the cabin;
  • a temperature and humidity sensor for detecting an internal temperature and humidity of the test chamber, the temperature and humidity sensor being installed inside the test chamber;
  • cooling sheet control unit for controlling operation and/or stop of the electronic cooling sheet, wherein the cooling sheet control unit is electrically connected to the corresponding electronic cooling sheets one-to-one or electrically connected to all the electronic cooling sheets one-to-many;
  • the main controller is electrically connected to the temperature sensor, the temperature and humidity sensor and the cooling sheet control unit, and is configured to calculate the air dew point value in the test cabin according to the internal temperature and humidity of the test chamber collected by the temperature and humidity sensor, when the air dew point value is higher than
  • the control cooling sheet control unit reduces the working quantity of the electronic refrigerating piece or the output power of the electronic refrigerating piece; wherein the preset threshold value is the temperature T1 of the electronic refrigerating piece collected by the temperature sensor or the temperature of the electronic refrigerating piece T1+n°C, 0 ⁇ n ⁇ 10.
  • the main controller calculates an air dew point value corresponding to the temperature and humidity according to the stored dew point table.
  • the cooling sheet control unit is further configured to determine whether the electronic refrigeration chip is operating normally by detecting an output power, a current, or a voltage of the electronic refrigeration chip.
  • the main controller is further configured to automatically disconnect the working circuit of the failed electronic refrigerating piece when the refrigerating piece control unit detects that the electronic refrigerating piece fails, start the standby electronic refrigerating piece to work or keep other The electronic cooling unit operates normally.
  • the main controller is further configured to prompt the number of the electronic cooling chip that has failed when the cooling sheet control unit detects that the electronic cooling chip has failed.
  • the main controller identifies the number of the failed electronic cooling sheet by the detection of the cooling sheet control unit and/or the detection of the temperature sensor.
  • the main controller is further configured to reactivate the working circuit of the replaced electronic refrigerating piece when the failed electronic refrigerating piece is replaced.
  • a second aspect of the present invention provides an anti-condensation method for an electronic refrigeration anti-condensation system, comprising the following steps:
  • the invention can control the working state of the electronic refrigeration sheet in real time, realize the redundant control of the cooling sheet, can avoid the condensation of the cabin caused by the cooling sheet, and can realize the failure without stopping work.
  • 1 is a schematic structural view of an electronic refrigeration anti-condensation system.
  • an embodiment of the present invention provides an electronic refrigeration anti-condensation system including a test chamber 1, an electronic refrigeration unit 2, a temperature sensor 3, a temperature and humidity sensor 4, a cooling sheet control unit 5, and a main control.
  • the electronic refrigerating sheet 2 is used for cooling and/or heating, and the electronic refrigerating sheet 2 is provided with at least one group (for example, M1, M2, ... Mn), and each group of electronic refrigerating sheets 2 is respectively installed in the test chamber 1. On the bulkhead, and one end of the heat is radiated outside the test chamber, and the other part is fixed on the bulkhead of the test chamber or in the cabin.
  • the temperature sensor 3 is configured to detect the temperature of the electronic refrigerating sheet 2, and the temperature sensor 3 is installed on the inner side of the cabin of each group of the electronic refrigerating sheets 2 or on the inner side of the shared compartment of all the electronic refrigerating sheets or on the bulkhead Or the electronic cooling sheet is placed on the heat sink inside the cabin.
  • the temperature and humidity sensor 4 is for detecting the internal temperature and humidity of the test chamber 1, and the temperature and humidity sensor 4 is installed inside the test chamber 1.
  • a cooling sheet control unit 5 for controlling operation and/or stop of the electronic refrigerating sheet 2, the refrigerating sheet control unit 5 being provided with at least one (eg, N1, N2, . . . Nn), the refrigerating sheet control unit 5
  • the electronic cooling sheets 2 corresponding to the respective places are electrically connected or electrically connected to all of the electronic cooling sheets 2 one-to-many.
  • the main controller 6 is electrically connected to the temperature sensor 3, the temperature and humidity sensor 4, and the cooling sheet control unit 5 for calculating the air dew point value in the test chamber 1 based on the internal temperature and humidity of the test chamber 1 collected by the temperature and humidity sensor 4.
  • the control fin control unit 5 reduces the number of operations of the electronic refrigerating sheet 2 or the output power of the electronic refrigerating sheet 2.
  • the preset threshold is the temperature T1 of the electronic refrigerating sheet 2 collected by the temperature sensor 3 or the temperature T1+n°C of the electronic refrigerating sheet 2, 0 ⁇ n ⁇ 10.
  • the main controller 6 calculates an air dew point value corresponding to the temperature and humidity according to the stored dew point table.
  • the dew point table can be obtained according to literature or textbooks.
  • the cooling sheet control unit 5 is further configured to determine whether the electronic refrigerating sheet 2 is normally operated by detecting the output power, current or voltage of the electronic refrigerating sheet 2.
  • the main controller 6 is further configured to automatically disconnect the working circuit of the failed electronic refrigerating piece 2 when the cooling sheet control unit 5 detects that the electronic refrigerating piece 2 is faulty, and start the standby electronic refrigerating piece. 2 Work or keep other electronic cooling sheets 2 in normal operation.
  • the main controller 6 is further configured to prompt the number of the electronic cooling sheet 2 that has failed when the cooling sheet control unit 5 detects that the electronic refrigerating sheet 2 has failed.
  • the main controller 6 can identify the number of the failed electronic refrigerating sheet 2 by the detection of the cooling sheet control unit 5 and/or the detection of the temperature sensor 3. These two fault determinations can be used separately or simultaneously.
  • the main controller 6 is further configured to reactivate the working circuit of the replaced electronic refrigerating sheet 2 when the failed electronic refrigerating sheet 2 is replaced.
  • a first temperature sensor 7 is externally mounted on the test chamber for detecting an ambient temperature.
  • the main controller 6 prompts the risk that the test chamber sampling port may be dew condensation. And / or temperature control of the sampling pipeline.
  • the present invention also provides an anti-condensation method for an electronic refrigeration anti-condensation system, comprising the following steps:
  • the control unit 5 reduces the number of operations of the electronic refrigerating sheet 2 or the output power of the electronic refrigerating sheet 2; wherein the predetermined threshold value is the temperature T1 of the electronic refrigerating sheet 2 or the temperature T1+ of the electronic refrigerating sheet 2 collected by the temperature sensor 3. n ° C, 0 ⁇ n ⁇ 10.
  • the invention can control the working state of the electronic refrigeration sheet in real time, realize the redundant control of the cooling sheet, can avoid the condensation of the cabin caused by the cooling sheet, and can realize the failure without stopping work.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Biodiversity & Conservation Biology (AREA)
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  • Ecology (AREA)
  • Pathology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

本发明公开了一种电子制冷防结露系统及其防结露方法，该系统包括测试舱、电子制冷片、温度传感器、温湿度传感器、制冷片控制单元和主控制器，主控制器与温度传感器、温湿度传感器和制冷片控制单元电连接，主控制器能够根据温湿度传感器采集到的测试舱的内部温度和湿度计算测试舱内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元减少电子制冷片的工作数量或电子制冷片的输出功率；其中，所述预设阈值为温度传感器采集到的电子制冷片的温度T1或者电子制冷片的温度T1+n℃，n≤10。本发明能够实时控制电子制冷片的工作状态，实现制冷片的冗余控制，可避免制冷片导致舱体出现结露的情况，可实现故障无停机工作。

Description

一种电子制冷防结露系统及其防结露方法 技术领域
本发明涉及检测设备技术领域，更具体地说，是涉及一种电子制冷防结露系统及其防结露方法。
背景技术
现有的家具、汽车用品等材料会中存在的甲醛、挥发性有机物(VOC)等挥发性有害气体，当挥发性有害气体的浓度若超过一定的范围，则会对人体造成危害。合理地收集材料中的甲醛、VOC等挥发性有害气体是检测技术的重要环节之一。
目前，工业上也有许多对甲醛、VOC等挥发性有害气体的释放量进行测试的设备，此类测试设备可以通过电子制冷片进行制冷或加热，但是电子制冷片在制冷时经常会使测试设备的舱体出现结露现象，影响测试效果。
发明内容
本发明的目的在于克服现有技术中的上述缺陷，提供一种制冷片防结露措施及制冷片冗余控制、故障无停机的电子制冷防结露系统及其防结露方法。
为实现上述目的，本发明第一方面提供了一种电子制冷防结露系统，包括测试舱，还包括：
电子制冷片，用于制冷和/或制热，所述电子制冷片设置有至少一组，每组电子制冷片分别装设在测试舱的舱壁上，并且其一端部位在测试舱的 外部散热，其另一部位固定在测试舱的舱壁上或者舱内；
温度传感器，用于检测电子制冷片的温度，所述温度传感器装设在每组电子制冷片的靠舱内侧部位上或者所有电子制冷片的共用靠舱内侧部位上或者舱壁上或者电子制冷片靠舱内散热片上；
温湿度传感器，用于检测测试舱的内部温度和湿度，所述温湿度传感器装设在测试舱的内部；
制冷片控制单元，用于控制电子制冷片的运行和/或停止，所述制冷片控制单元一对一地与各自对应的电子制冷片电连接或者一对多地与所有电子制冷片电连接；
主控制器，与温度传感器、温湿度传感器和制冷片控制单元电连接，用于根据温湿度传感器采集到的测试舱的内部温度和湿度计算测试舱内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元减少电子制冷片的工作数量或电子制冷片的输出功率；其中，所述预设阈值为温度传感器采集到的电子制冷片的温度T1或者电子制冷片的温度T1+n℃，0＜n≤10。
作为优选的实施方式，所述主控制器在获取到温湿度传感器采集到的测试舱的内部温度和湿度后根据其储存的露点表计算出与该温度和湿度相对应的空气露点值。
作为优选的实施方式，所述制冷片控制单元进一步用于通过检测电子制冷片的输出功率、电流或电压来判断电子制冷片是否正常运行。
作为优选的实施方式，所述主控制器进一步用于当制冷片控制单元检测到电子制冷片发生故障时，自动断开发生故障的电子制冷片的工作回路，启动备用电子制冷片工作或保持其他电子制冷片正常运行。
作为优选的实施方式，所述主控制器进一步用于当制冷片控制单元检测到电子制冷片发生故障时，提示发生故障的电子制冷片的编号。
作为优选的实施方式，所述主控制器通过制冷片控制单元的检测和/或温度传感器的检测来识别发生故障的电子制冷片的编号。
作为优选的实施方式，所述主控制器进一步用于当发生故障的电子制冷片被更换时，重新激活更换后的电子制冷片的工作回路。
本发明第二方面提供了一种电子制冷防结露系统的防结露方法，包括以下步骤：
(1)通过温湿度传感器实时采集的测试舱的内部温度和湿度，以及通过温度传感器实时检测电子制冷片的温度；
(2)通过主控制器获取到的温湿度传感器采集到的测试舱的内部温度和湿度计算测试舱内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元减少电子制冷片的工作数量或电子制冷片的输出功率；其中，所述预设阈值为温度传感器采集到的电子制冷片的温度T1或者电子制冷片的温度T1+n℃，0＜n≤10。
与现有技术相比，本发明的有益效果在于：
本发明能够实时控制电子制冷片的工作状态，实现制冷片的冗余控制，可避免制冷片导致舱体出现结露的情况，可实现故障无停机工作。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是电子制冷防结露系统的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参考图1，本发明的实施例提供了一种电子制冷防结露系统，该系统包括测试舱1、电子制冷片2、温度传感器3、温湿度传感器4、制冷片控制单元5和主控制器6，下面结合附图对本实施例各个组成部分进行详细说明。
电子制冷片2，用于制冷和/或制热，所述电子制冷片2设置有至少一组(如：M1、M2……Mn)，每组电子制冷片2分别装设在测试舱1的舱壁上，并且其一端部位在测试舱的外部散热，其另一部位固定在测试舱的舱壁上或者舱内。
温度传感器3，用于检测电子制冷片2的温度，所述温度传感器3装设在每组电子制冷片2的靠舱内侧部位上或者所有电子制冷片的共用靠舱内侧部位上或者舱壁上或者电子制冷片靠舱内散热片上。
温湿度传感器4，用于检测测试舱1的内部温度和湿度，所述温湿度传感器4装设在测试舱1的内部。
制冷片控制单元5，用于控制电子制冷片2的运行和/或停止，所述制冷片控制单元5设置有至少一个(如：N1、N2……Nn)，所述制冷片控制单元5一对一地与各自对应的电子制冷片2电连接或者一对多地与所有电 子制冷片2电连接。
主控制器6，与温度传感器3、温湿度传感器4和制冷片控制单元5电连接，用于根据温湿度传感器4采集到的测试舱1的内部温度和湿度计算测试舱1内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元5减少电子制冷片2的工作数量或电子制冷片2的输出功率。其中，所述预设阈值为温度传感器3采集到的电子制冷片2的温度T1或者电子制冷片2的温度T1+n℃，0＜n≤10。
在本实施例中，所述主控制器6在获取到温湿度传感器4采集到的测试舱1的内部温度和湿度后根据其储存的露点表计算出与该温度和湿度相对应的空气露点值。其中，露点表可根据文献或教科书就可获取到。
在本实施例中，所述制冷片控制单元5进一步用于通过检测电子制冷片2的输出功率、电流或电压来判断电子制冷片2是否正常运行。
在本实施例中，所述主控制器6进一步用于当制冷片控制单元5检测到电子制冷片2发生故障时，自动断开发生故障的电子制冷片2的工作回路，启动备用电子制冷片2工作或保持其他电子制冷片2正常运行。
在本实施例中，所述主控制器6进一步用于当制冷片控制单元5检测到电子制冷片2发生故障时，提示发生故障的电子制冷片2的编号。
具体实施时，所述主控制器6可通过制冷片控制单元5的检测和/或温度传感器3的检测来识别发生故障的电子制冷片2的编号。这二种故障判定可分别使用，也可同时使用。
在本实施例中，所述主控制器6进一步用于当发生故障的电子制冷片2被更换时，重新激活更换后的电子制冷片2的工作回路。
进一步而言，所述测试舱外部安装有第一温度传感器7，用于检测环 境温度，在环境温度低于测试舱内部空气的露点时，主控制器6提示测试舱采样口可能结露的风险和/或对采样管道调温处理。
此外，本发明还提供了一种电子制冷防结露系统的防结露方法，包括以下步骤：
(1)通过温湿度传感器4实时采集的测试舱1的内部温度和湿度，以及通过温度传感器3实时检测电子制冷片2的温度；
(2)通过主控制器6获取到的温湿度传感器4采集到的测试舱1的内部温度和湿度计算测试舱1内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元5减少电子制冷片2的工作数量或电子制冷片2的输出功率；其中，所述预设阈值为温度传感器3采集到的电子制冷片2的温度T1或者电子制冷片2的温度T1+n℃，0＜n≤10。
综上所述，本发明能够实时控制电子制冷片的工作状态，实现制冷片的冗余控制，可避免制冷片导致舱体出现结露的情况，可实现故障无停机工作。
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。

Claims (9)

  1. 一种电子制冷防结露系统，包括测试舱，其特征在于，还包括：
    电子制冷片，用于制冷和/或制热，所述电子制冷片设置有至少一组，每组电子制冷片分别装设在测试舱的舱壁上，并且其一端部位在测试舱的外部散热，其另一部位固定在测试舱的舱壁上或者舱内；
    温度传感器，用于检测电子制冷片的温度，所述温度传感器装设在每组电子制冷片的靠舱内侧部位上或者所有电子制冷片的共用靠舱内侧部位上或者舱壁上或者电子制冷片靠舱内散热片上；
    温湿度传感器，用于检测测试舱的内部温度和湿度，所述温湿度传感器装设在测试舱的内部；
    制冷片控制单元，用于控制电子制冷片的运行和/或停止，所述制冷片控制单元一对一地与各自对应的电子制冷片电连接或者一对多地与所有电子制冷片电连接；
    主控制器，与温度传感器、温湿度传感器和制冷片控制单元电连接，用于根据温湿度传感器采集到的测试舱的内部温度和湿度计算测试舱内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元减少电子制冷片的工作数量或电子制冷片的输出功率；其中，所述预设阈值为温度传感器采集到的电子制冷片的温度T1或者电子制冷片的温度T1+n℃，0＜n≤10。
  2. 根据权利要求1所述的电子制冷防结露系统，其特征在于，所述主控制器在获取到温湿度传感器采集到的测试舱的内部温度和湿度后根据其储存的露点表计算出与该温度和湿度相对应的空气露点值。
  3. 根据权利要求1所述的电子制冷防结露系统，其特征在于，所述制冷片控制单元进一步用于通过检测电子制冷片的输出功率、电流或电压来判断电子制冷片是否正常运行。
  4. 根据权利要求1所述的电子制冷防结露系统，其特征在于，所述主控制器进一步用于当制冷片控制单元检测到电子制冷片发生故障时，自动断开发生故障的电子制冷片的工作回路，启动备用电子制冷片工作或保持其他电子制冷片正常运行。
  5. 根据权利要求1所述的电子制冷防结露系统，其特征在于，所述主控制器进一步用于当制冷片控制单元检测到电子制冷片发生故障时，提示发生故障的电子制冷片的编号。
  6. 根据权利要求5所述的电子制冷防结露系统，其特征在于，所述主控制器通过制冷片控制单元的检测和/或温度传感器的检测来识别发生故障的电子制冷片的编号。
  7. 根据权利要求1所述的电子制冷防结露系统，其特征在于，所述主控制器进一步用于当发生故障的电子制冷片被更换时，重新激活更换后的电子制冷片的工作回路。
  8. 根据权利要求1所述的电子制冷防结露系统，其特征在于，所述测试舱外部安装有第一温度传感器，用于检测环境温度，在环境温度低于测试舱内部空气的露点时，控制器提示测试舱采样口可能结露的风险和/或对采样管道调温处理。
  9. 一种权利要求1至8中任意一项所述的电子制冷防结露系统的防结露方法，其特征在于，该方法包括以下步骤：
    (1)通过温湿度传感器实时采集的测试舱的内部温度和湿度，以及 通过温度传感器实时检测电子制冷片的温度；
    (2)通过主控制器获取到的温湿度传感器采集到的测试舱的内部温度和湿度计算测试舱内的空气露点值，当空气露点值高于预设阈值时，控制制冷片控制单元减少电子制冷片的工作数量或电子制冷片的输出功率；其中，所述预设阈值为温度传感器采集到的电子制冷片的温度T1或者电子制冷片的温度T1+n℃，0＜n≤10。
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