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公开(公告)号：US20230417632A1
公开(公告)日：2023-12-28
申请号：US18339572
申请日：2023-06-22
申请人： ESPEC CORP.
发明人： Haruki SETO , Yuta Moriyama , Katsuhiko Watabe , Tetsuya Okadome , Masaki Yamamoto , Takumi USUI
CPC分类号： G01M99/002 , F25B7/00 , F25B2400/0409 , F25B2400/0411
摘要： There is provided an environmental test apparatus that can create a predetermined environment inside a test chamber, the environmental test apparatus including: the test chamber for placing a test target object; a heating portion; and a cooling portion. The cooling portion has a refrigeration circuit having a compressor, a condenser, an expansion portion, and an evaporator and in which a phase-changing refrigerant is to be circulated. The refrigeration circuit has a first bypass flow path connecting a discharge side of the condenser and a suction side of the compressor and the first bypass flow path is provided with a first flow rate control portion. A temperature measurement portion for measuring a temperature of the compressor and a controller are provided. The controller is configured to control a substantial degree of opening of the first flow rate control portion according to a detection value of the temperature measurement portion.
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公开(公告)号：US09453872B2
公开(公告)日：2016-09-27
申请号：US13944686
申请日：2013-07-17
申请人： ESPEC CORP.
发明人： Michiya Kusaka
IPC分类号： G01R31/26
CPC分类号： G01R31/2619
摘要： Provided is a power cycle test apparatus that eliminates the need to measure a thermal resistance in a power cycle test and that pursues power saving in the evaluation of IGBT reliability by exactly applying a required thermal stress through the automatic adjustment of a stress current. The power cycle test apparatus performs a power cycle test for an IGBT to be tested by applying a thermal stress to the IGBT to be tested through the intermittent application of a stress current thereto. The apparatus applies the stress current to the IGBT to be tested and thereafter applies a current for measurement to the IGBT to be tested to measure a collector-emitter voltage of the IGBT to be tested. The apparatus further obtains a junction temperature of the IGBT to be tested from the measured collector-emitter voltage and a temperature coefficient of the IGBT to be tested.
摘要翻译： 提供了一种功率循环测试装置，其消除了在功率循环测试中测量热阻的需要，并且通过在应力电流的自动调整中精确地施加所需的热应力来追求节能以评估IGBT的可靠性。 动力循环试验装置通过向应力电流的间歇施加对待测试的IGBT施加热应力来对要测试的IGBT进行功率循环试验。 该装置将应力电流施加到要测试的IGBT，然后将待测电流用于测量的IGBT，以测量待测IGBT的集电极 - 发射极电压。 该装置还从所测得的集电极 - 发射极电压和待测IGBT的温度系数中获得待测IGBT的结温。
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公开(公告)号：US09329118B2
公开(公告)日：2016-05-03
申请号：US14089257
申请日：2013-11-25
申请人： ESPEC CORP.
发明人： Osamu Matsuguma , Kensuke Akamatsu
CPC分类号： G01N17/002
摘要： An environmental chamber includes a testing tub in which a testing space is formed. The testing tub has a front wall, a left sidewall, a right sidewall, a rear wall, and a ceiling part, and is divided into a lower tub part and an upper tub part by a dividing surface extended in a direction inclined downwardly and frontwardly. The left and right sidewalls are respectively divided into two portions by the dividing surface. An inner surface of the upper tub part includes at least a part of an inner surface of each of the ceiling part, the front wall, the left sidewall, and the right sidewall. The upper tub part is supported by the lower tub part to be able to open the testing space.
摘要翻译： 环境室包括其中形成测试空间的测试槽。 测试槽具有前壁，左侧壁，右侧壁，后壁和顶部，并且通过沿向下和向下倾斜的方向延伸的分隔表面被分为下部桶部分和上部桶部分 。 左侧壁和右侧壁分别由分割面分成两部分。 上槽部的内表面包括顶板部，前壁，左侧壁和右侧壁中的每一个的内表面的至少一部分。 上桶部分由下槽部分支撑以能够打开测试空间。
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公开(公告)号：US20150129575A1
公开(公告)日：2015-05-14
申请号：US14535837
申请日：2014-11-07
申请人： ESPEC CORP.
发明人： Hideki Tanaka
CPC分类号： G01R31/2874 , G01R31/003 , G01R31/2875 , H05B3/22
摘要： A contact-type testing device that has a heating plate capable of being heated and in which a desired test is conducted while a test object is in contact with the heating plate, the contact-type testing device including: a heating member that heats the heating plate, wherein the heating member includes: a plurality of strips of heat generation bodies; and a power feeding section that feeds electricity to the heat generation bodies, wherein the heat generation bodies are distributed in a planar manner, and a group or all of the heat generation bodies are parallel-connected, wherein a part or all of the heat generation bodies have a steep temperature/resistance characteristic, and resistance values of the heat generation bodies increase with temperature, and wherein the heating member is disposed to face the heating plate, and a gap is provided between the heating plate and the heating member.
摘要翻译： 一种接触型测试装置，其具有能够被加热的加热板，并且在测试对象与所述加热板接触的同时进行期望的测试，所述接触型测试装置包括：加热部件，其加热 板，其中所述加热构件包括：多个发热体条; 以及向所述发热体供电的供电部，其中所述发热体以平面方式分布，并且所述一组或全部所述发热体并联，其中，所述发热体的一部分或全部 主体具有陡峭的温度/电阻特性，并且发热体的电阻值随温度升高，并且其中加热部件设置成面对加热板，并且在加热板和加热部件之间设置间隙。
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公开(公告)号：US20140150574A1
公开(公告)日：2014-06-05
申请号：US14089257
申请日：2013-11-25
申请人： ESPEC CORP.
发明人： Osamu Matsuguma , Kensuke Akamatsu
IPC分类号： G01N17/00
CPC分类号： G01N17/002
摘要： An environmental chamber includes a testing tub in which a testing space is formed. The testing tub has a front wall, a left sidewall, a right sidewall, a rear wall, and a ceiling part, and is divided into a lower tub part and an upper tub part by a dividing surface extended in a direction inclined downwardly and frontwardly. The left and right sidewalls are respectively divided into two portions by the dividing surface. An inner surface of the upper tub part includes at least a part of an inner surface of each of the ceiling part, the front wall, the left sidewall, and the right sidewall. The upper tub part is supported by the lower tub part to be able to open the testing space.
摘要翻译： 环境室包括其中形成测试空间的测试槽。 测试槽具有前壁，左侧壁，右侧壁，后壁和顶部，并且通过沿向下和向下倾斜的方向延伸的分隔表面被分为下部桶部分和上部桶部分 。 左侧壁和右侧壁分别由分割面分成两部分。 上桶部分的内表面包括天花板部分，前壁，左侧壁和右侧壁中的每一个的内表面的至少一部分。 上桶部分由下槽部分支撑以能够打开测试空间。
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公开(公告)号：US20140021973A1
公开(公告)日：2014-01-23
申请号：US13944686
申请日：2013-07-17
申请人： ESPEC CORP.
发明人： Michiya Kusaka
IPC分类号： G01R31/26
CPC分类号： G01R31/2619
摘要： Provided is a power cycle test apparatus that eliminates the need to measure a thermal resistance in a power cycle test and that pursues power saving in the evaluation of IGBT reliability by exactly applying a required thermal stress through the automatic adjustment of a stress current. The power cycle test apparatus performs a power cycle test for an IGBT to be tested by applying a thermal stress to the IGBT to be tested through the intermittent application of a stress current thereto. The apparatus applies the stress current to the IGBT to be tested and thereafter applies a current for measurement to the IGBT to be tested to measure a collector-emitter voltage of the IGBT to be tested. The apparatus further obtains a junction temperature of the IGBT to be tested from the measured collector-emitter voltage and a temperature coefficient of the IGBT to be tested.
摘要翻译： 提供了一种功率循环测试装置，其消除了在功率循环测试中测量热阻的需要，并且通过在应力电流的自动调整中精确地施加所需的热应力来追求节能以评估IGBT的可靠性。 动力循环试验装置通过向应力电流的间歇施加对待测试的IGBT施加热应力来对要测试的IGBT进行功率循环试验。 该装置将应力电流施加到要测试的IGBT，然后将待测电流用于测量的IGBT，以测量待测IGBT的集电极 - 发射极电压。 该装置还从所测得的集电极 - 发射极电压和待测IGBT的温度系数中获得待测IGBT的结温。
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公开(公告)号：US20240068930A1
公开(公告)日：2024-02-29
申请号：US18457936
申请日：2023-08-29
申请人： ESPEC CORP.
CPC分类号： G01N17/002 , G05D7/0635 , G05D23/19
摘要： A snow environment test apparatus includes an injector including a two-fluid nozzle, a temperature setting section for setting an indoor temperature, an air conditioner for cooling an inside of a test chamber, a temperature control section for controlling the air conditioner, a water flow rate setting section for setting a flow rate of water to be supplied to the injector, a water supply section for supplying water having a predetermined temperature to the injector, a snow quality selection section for selecting snow quality, a related information storage section that stores information in which a temperature in the test chamber, a flow rate of water to be supplied to the injector, a pressure of air to be supplied to the injector, and a snow quality are related with each other, and a pressure regulation section for regulating the pressure of the air to be supplied to the injector to a pressure obtained by using the information stored in the related information storage section.
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公开(公告)号：US20220228787A1
公开(公告)日：2022-07-21
申请号：US17572000
申请日：2022-01-10
申请人： ESPEC CORP.
发明人： Hiroyuki ENOKI , Kouki SAKANE , Koshi TAMURA
IPC分类号： F25C3/04
摘要： A snow making apparatus includes: a snow making container having an inner space for snow making; a supply unit configured to supply fine snow or fine water droplets to the inner space; a catching unit configured to catch the fine snow or the fine snow formed of the water droplets; and a drive unit configured to move the catching unit toward a place where the fine snow is flying in the inner space. The catching unit is configured to be shaken thereby making snow caught by the catching unit fall off from the catching unit.
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9.发明申请公开(公告)号：US20210138450A1
公开(公告)日：2021-05-13
申请号：US17094927
申请日：2020-11-11
申请人： ESPEC CORP.
发明人： MASASHI TERAO
IPC分类号： B01L1/02
摘要： There is provided an image-capturing device for an environment forming apparatus used for the environment forming apparatus. The environment forming apparatus includes an environment forming chamber configured to be adjusted to a predetermined environment, and a through-hole configured to connect the environment forming chamber to an outside. The image-capturing device for the environment forming apparatus includes: a camera; an inner tubular member; an outer tubular member configured to cover the inner tubular member; and an air blower. A first ventilation space is formed by an inside of the inner tubular member, and a second ventilation space is formed between the inner tubular member and the outer tubular member. Air is blown toward the camera by the air blower via one of the first ventilation space and the second ventilation space, and is exhausted via the other of the first ventilation space and the second ventilation space.
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公开(公告)号：USD742332S1
公开(公告)日：2015-11-03
申请号：US29498682
申请日：2014-08-06
申请人： Espec Corp.
设计人： Osamu Matsuguma , Yasushi Watanabe
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