WO2018157293A1 - 保温型材及热水器 - Google Patents

保温型材及热水器 Download PDF

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Publication number
WO2018157293A1
WO2018157293A1 PCT/CN2017/075239 CN2017075239W WO2018157293A1 WO 2018157293 A1 WO2018157293 A1 WO 2018157293A1 CN 2017075239 W CN2017075239 W CN 2017075239W WO 2018157293 A1 WO2018157293 A1 WO 2018157293A1
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Prior art keywords
heat insulating
gas
microbubbles
water heater
layer
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PCT/CN2017/075239
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English (en)
French (fr)
Inventor
余远明
曲绍鹤
邹树平
王丽利
张庆堂
江渝
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Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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Priority to PCT/CN2017/075239 priority Critical patent/WO2018157293A1/zh
Publication of WO2018157293A1 publication Critical patent/WO2018157293A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/07—Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details

Definitions

  • the invention relates to the field of water heaters, in particular to a heat preservation profile and a water heater.
  • the insulation structure of the existing electric water heater is filled with a foaming material between the inner casing and the outer casing, and the heat of the water stored in the inner tank is reduced by means of sealing the inner liner.
  • the foamed heat insulating material due to the high heat transfer coefficient and low density of the foamed heat insulating material, in order to maintain the heat preservation performance of the water heater design, the overall volume of the electric water heater is likely to be large.
  • the main object of the present invention is to provide a heat insulating profile, which aims to solve the technical problem that the heat insulating material of the existing water heater has poor heat insulation effect and has a large volume ratio in the whole water heater.
  • the thermal insulation profile proposed by the present invention comprises:
  • gas barrier outer layer having a flat cavity
  • a plurality of microbubbles are filled in the flat cavity, the microbubbles are filled with a heat insulating gas, and the size of the microbubbles in any direction is less than 3 mm.
  • the thermal insulation gas has a thermal conductivity of less than 25 mW/(m•K).
  • the heat insulating gas is one or a mixture of two or more of argon gas, helium gas, neon gas, carbon dioxide, cyclopentane, and isopentane.
  • the microbubbles are further filled with nano powder having anti-heat radiation.
  • the outer layer of the gas barrier layer and the wall of the microbubbles are one or more than one or more layers of a plastic film, a metal foil composite plastic film, and a metal composite plate coated with a metal layer.
  • the thermal insulation profile further comprises a reflective layer attached to the front and back surfaces of the outer barrier layer, the reflective layer being a film layer or coating disposed on the outer barrier layer.
  • the invention also provides a water heater comprising:
  • the thermal insulation profile is attached to the outer wall surface of the inner liner and wrapped around the inner casing; the thermal insulation profile comprises:
  • gas barrier outer layer having a flat cavity
  • microbubbles filled in the flat cavity, the microbubbles are filled with a heat insulating gas, and the size of the microbubbles in any direction is less than 3 mm;
  • the outer casing is wrapped around the outer periphery of the thermal insulation profile.
  • the water heater further comprises a foamed heat insulating material filled between the outer casing and the heat insulating profile.
  • the heat insulating profile of the invention fills the microbubbles in the flat cavity of the outer layer of the gas barrier, and fills the heat insulating gas in the microbubbles, because the inner cavity of the microbubbles is smaller than the minimum space required for heat transfer of the gas convection,
  • the heat-insulating gas cannot form convective heat transfer in the micro-bubbles, so that the micro-bubbles can play a good heat-insulating effect, thereby reducing the average thermal conductivity of the heat-insulating profile, and the volume ratio is small under the premise of ensuring the same heat insulation effect.
  • the gas pressure of the heat insulating gas can support the microbubbles and the outer layer of the gas barrier, and the outer layer of the gas barrier is not easily damaged by the atmospheric pressure, thereby improving the reliability of the heat insulating profile.
  • FIG. 1 is a schematic structural view of an embodiment of a heat insulating profile of the present invention
  • Figure 2 is a partial enlarged view of a portion A in Figure 1;
  • FIG. 3 is a schematic structural view of an embodiment of a water heater according to the present invention.
  • the directional indication is only used to explain in a certain posture (as shown in the drawing)
  • the relative positional relationship between the components, the motion situation, and the like if the specific posture changes, the directional indication also changes accordingly.
  • first”, “second”, etc. in the embodiments of the present invention, the description of the "first”, “second”, etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the invention provides a thermal insulation profile.
  • the heat insulating profile 102 includes:
  • gas barrier outer layer 1 has a flat cavity
  • a plurality of microbubbles 2 are filled in the flat cavity, and the microbubbles 2 are filled with the heat insulating gas 3, and the size of the microbubbles 2 in either direction is less than 3 mm.
  • the gas barrier outer layer 1 is for accommodating the microbubbles 2, and after the microbubbles 2 are broken, prevents further leakage of the heat insulating gas 3.
  • the heat insulating profile 102 of the present invention fills the microbubbles 2 in the flat cavity of the gas barrier outer layer 1 and fills the heat insulating gas 3 in the microbubbles 2, since the inner cavity of the microbubbles 2 is smaller than the gas convection heat transfer.
  • the volume fraction is small; in addition, the gas pressure of the heat insulating gas 3 can support the microbubbles 2 and the gas barrier outer layer 1, and the gas barrier outer layer 1 is not easily damaged by the atmospheric pressure, thereby The reliability of the insulation profile 102 is improved.
  • the thermal conductivity of the insulating gas 3 is less than 25 mW/(m•K).
  • the heat insulating gas 3 is one or a mixture of two or more of argon gas, helium gas, neon gas, carbon dioxide, cyclopentane, and isopentane.
  • the gas pressure of the heat insulating gas 3 can support the microbubbles 2 and reduce the heat transfer effect. In order to reduce the pressure difference between the outside of the gas barrier outer layer 1 and the gas pressure in the microbubbles 2, the gas pressure of the heat insulating gas 3 coincides with the atmospheric pressure.
  • the microbubbles 2 are also filled with nano powder having anti-heat radiation.
  • the nano powder may be nano silica, nano titanium dioxide, nano xonotlite or the like.
  • the heat insulating gas 3 is filled in the voids of the nano-powders, so that the nano-powder can reduce the heat transfer of the heat-insulating gas 3 while reducing the heat radiation.
  • the microbubbles 2 are of an open type, and the adjacent microbubbles 2 communicate with each other. In this way, it is not necessary to fill the single microbubbles 2 with the heat insulating gas 3, and the plurality of microbubbles 2 can be filled with the insulating gas 3 as a whole.
  • a plurality of microbubbles 2 are placed in the environment of the insulating gas 3, and in the environment, the microbubbles 2 are encapsulated by the gas barrier outer layer 1. After the encapsulation is completed, the microbubbles 2 are filled with the insulating gas. 3.
  • the gas barrier outer layer 1 is provided with an air inlet hole 11 and a vent hole 12 communicating with the flat cavity, and the heat insulating profile 102 further includes a sealing member for sealing the air inlet hole 11 and the air vent hole 12.
  • the heat insulating gas 3 when the heat insulating gas 3 is charged, the heat insulating gas 3 enters from the intake hole 11 and is discharged from the exhaust hole 12. In the process of inflation, if the microbubbles 2 are filled with air, the heat insulating gas 3 needs to discharge the air in the microbubbles 2 from the exhaust holes 12.
  • the venting opening 12 is disposed away from the air inlet opening 11, and thus, it is advantageous to exhaust the air in the venting aperture as soon as possible.
  • the material of the gas barrier outer layer 1 and the wall of the microbubbles 2 is one or two or more layers of a plastic film, a metal foil composite plastic film, and a metal composite plate coated with a metal layer.
  • the material of the gas barrier outer layer 1 and the wall of the microbubbles 2 is a soft film having a low thermal conductivity and a gas barrier, so that on the one hand, the heat insulation effect can be further enhanced, and on the other hand, it can be resistant.
  • the bending is convenient to adapt to the shape installation of the water heater liner 101.
  • the heat insulating profile 102 further includes a reflective layer 4 attached to the front and back surfaces of the gas barrier outer layer 1, and the reflective layer 4 is a film layer or coating layer disposed on the gas barrier outer layer 1.
  • the reflection of the radiant heat by the reflective layer 4 can further increase the thermal insulation properties of the thermal insulation profile 102.
  • the reflective layer 4 may be one or more layers of a metal foil composite plastic film, a metal layer-coated plastic composite film, a metal reflective coating, and a nano reflective coating.
  • the invention also provides a water heater, please refer to FIG. 3 together, the water heater comprises:
  • the heat insulating profile 102 is attached to the outer wall surface of the inner liner 101 and wrapped around the inner liner 101;
  • the outer casing 103 is wrapped around the outer periphery of the thermal insulation profile 102.
  • the specific structure of the heat insulating profile 102 is referred to the above embodiment. Since the water heater adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are not repeated herein. . among them,
  • the outer casing 103 can protect the thermal insulation profile 102 from damage during transport or use.
  • the water heater is provided with a magnesium rod 105, an outlet pipe 106, an inlet pipe 107, a heater 108, and an electric control room 109.
  • the magnesium rod 105 is mounted on the inner wall surface of the inner liner 101, and a main control panel for controlling the heater 108 is provided in the electric control chamber 109.
  • the water heater further includes a foamed heat insulating material 104 filled between the outer casing 103 and the heat insulating profile 102.
  • a foamed heat insulating material 104 filled between the outer casing 103 and the heat insulating profile 102.
  • the heat insulation effect of the water heater can be further enhanced by providing the foam insulation material 104.
  • the foam insulation material 104 can completely wrap and seal the heat insulation profile 102, the heat insulation profile is enhanced.
  • the installation strength of 102 can also form an excellent composite insulation layer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Insulation (AREA)

Abstract

一种保温型材（102）及具有保温型材（102）的热水器，其中，保温型材（102）包括：隔气外层（1），所述隔气外层（1）具有扁状容腔；多个微气泡（2），填充在所述扁状容腔内，所述微气泡（2）内填充有隔热气体（3），且所述微气泡（2）在任一方向上的尺寸小于3mm。

Description

保温型材及热水器
技术领域
本发明涉及热水器领域，特别涉及一种保温型材及热水器。
背景技术
目前，现有的电热水器的保温结构是在内胆和外壳之间填充发泡材料，通过将内胆包裹密封的方式，降低内胆的存储的水体热量的散失。但是由于发泡隔热材料传热系数较高，密度小，如此，要保持热水器设计的保温性能，则容易导致电热水器整体体积偏大。
发明内容
本发明的主要目的是提出一种保温型材，旨在解决现有的热水器的隔热材料隔热效果差，在热水器整机中体积占比大的技术问题。
为实现上述目的，本发明提出的保温型材，包括：
隔气外层，所述隔气外层具有扁状容腔；
多个微气泡，填充在所述扁状容腔内，所述微气泡内填充有隔热气体，且所述微气泡在任一方向上的尺寸小于3mm。
优选地，所述隔热气体的导热系数低于25mW/（m•K）。
优选地，所述隔热气体为氩气、氪气、氙气、二氧化碳、环戊烷、异戊烷中的一种或两种以上的混合物。
优选地，所述微气泡内还填充有反热辐射的纳米粉体。
优选地，所述隔气外层及所述微气泡的壁体的材质为塑料膜、金属箔复合塑料膜、镀有金属层的塑料复合膜中的一层或两层以上的复合膜材料。
优选地，所述保温型材还包括贴合在隔气外层正面及背面处的反射层，所述反射层为设置在所述隔气外层上的膜层或涂层。
本发明还提出一种热水器，包括：
内胆，用于存储加热水体；
所述保温型材，所述保温型材贴合在所述内胆的外壁面上，并包裹所述内胆设置；所述保温型材包括：
隔气外层，所述隔气外层具有扁状容腔；
多个微气泡，填充在所述扁状容腔内，所述微气泡内填充有隔热气体，且所述微气泡在任一方向上的尺寸小于3mm；
外壳，包裹在所述保温型材的外围。
优选地，该热水器还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
本发明保温型材通过在隔气外层的扁状容腔内填充微气泡，并在微气泡内的充设隔热气体，由于微气泡内部容腔小于气体对流传热所需的最小空间，因此，隔热气体无法在微气泡内形成对流传热，从而微气泡可以起到良好的隔热作用，进而降低了保温型材平均导热系数，而在保证同样隔热效果的前提下，体积占比小；此外，隔热气体的气压可以对微气泡及隔气外层起到支撑作用，隔气外层不易受大气压的影响而产生破坏，从而提升了保温型材的可靠性。
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，下面描述中的附图仅仅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示出的结构获得其他的附图。
图1为本发明保温型材一实施例的结构示意图；
图2为图1中A处的局部放大图；
图3为本发明热水器一实施例的结构示意图。
附图标号说明：
标号 名称 标号 名称 标号 名称
1 隔气外层 4 反射层 105 镁棒
11 进气孔 101 内胆 106 出水管
12 排气孔 102 保温型材 107 进水管
2 微气泡 103 外壳 108 加热器
3 隔热气体 104 发泡隔热材料 109 电控室
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
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，所描述的实施例仅仅是本发明的一部分实施例，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。
需要说明，若本发明实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种保温型材。
在本发明实施例中，如图1及2所示，该保温型材102包括：
隔气外层1，隔气外层1具有扁状容腔；
多个微气泡2，填充在扁状容腔内，微气泡2内填充有隔热气体3，且微气泡2在任一方向上的尺寸小于3mm。
在本实施例中，隔气外层1用以容置微气泡2，并在微气泡2发生破坏后，阻止防止隔热气体3进一步泄漏。
本发明保温型材102通过在隔气外层1的扁状容腔内填充微气泡2，并在微气泡2内的充设隔热气体3，由于微气泡2内部容腔小于气体对流传热所需的最小空间，因此，隔热气体3无法在微气泡2内形成对流传热，从而微气泡2可以起到良好的隔热作用，进而降低了保温型材102平均导热系数，而在保证同样隔热效果的前提下，体积占比小；此外，隔热气体3的气压可以对微气泡2及隔气外层1起到支撑作用，隔气外层1不易受大气压的影响而产生破坏，从而提升了保温型材102的可靠性。
进一步地，隔热气体3的导热系数低于25mW/（m•K）。优选地，隔热气体3为氩气、氪气、氙气、二氧化碳、环戊烷、异戊烷中的一种或两种以上的混合物。
在本实施例中，隔热气体3的气压可以对微气泡2形成支撑作用，并降低热传递作用。为了减少隔气外层1外与微气泡2内的气压之间的压差，隔热气体3的气压与大气压一致。
进一步地，微气泡2内还填充有反热辐射的纳米粉体。本实施例中，该纳米粉体可以为纳米二氧化硅、纳米二氧化钛、纳米硬硅钙石等。隔热气体3则填充于这些纳米粉体的空隙中，如此，纳米粉体在降低热辐射传递的同时，还可以降低隔热气体3的传热。
进一步地，微气泡2为开孔型，相邻微气泡2之间相互连通。如此，无需对单个微气泡2进行隔热气体3的填充，多个微气泡2可以整体一起填充隔热气体3。例如，将多个微气泡2置于隔热气体3的环境中，并在该环境中用隔气外层1对微气泡2进行封装，封装完成后，微气泡2内则填充有隔热气体3。
进一步地，隔气外层1上设有与扁状容腔连通的进气孔11及排气孔12，保温型材102还包括用于密封进气孔11及排气孔12的密封件。
在本实施例中，充设隔热气体3时，隔热气体3从进气孔11进入，并从排气孔12排出。在充气的过程中，若微气泡2内填充有空气，隔热气体3需要将微气泡2内的空气从排气孔12排出。优选地，排气孔12远离进气孔11设置，如此，有利于尽快将透气孔隙内的空气排尽。
进一步地，隔气外层1及微气泡2的壁体的材质为塑料膜、金属箔复合塑料膜、镀有金属层的塑料复合膜中的一层或两层以上的复合膜材料。
在本实施例中，隔气外层1及微气泡2的壁体的材质均为导热系数低、不透气的软质膜，如此，一方面可以进一步地增强隔热效果，另一方面可以耐弯折方便适应热水器内胆101的外形安装。
进一步地，保温型材102还包括贴合在隔气外层1正面及背面处的反射层4，反射层4为设置在隔气外层1上的膜层或涂层。如此，通过反射层4对辐射热的反射，可以进一步地增加保温型材102的保温性能。反射层4可以为金属箔复合塑料膜、镀有金属层的塑料复合膜、金属反射涂层、纳米反射涂层中的一层或多层结构。
本发明还提出一种热水器，请一并参照图3，该热水器包括：
内胆101，用于存储加热水体；
保温型材102，保温型材102贴合在内胆101的外壁面上，并包裹内胆101设置；
外壳103，包裹在保温型材102的外围。
该保温型材102的具体结构参照上述实施例，由于本热水器采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。其中，
外壳103可以对保温型材102起到保护作用，防止保温型材102在运输或使用过程中遭到破坏。热水器内设有镁棒105、出水管106、进水管107、加热器108以及电控室109。镁棒105安装在内胆101的内壁面上，电控室109内设有用于控制加热器108的主控板。装配热水器时，首先制作按照内胆101的外形，设计制作合理尺寸的保温型材102，然后通过胶水或双面胶将保温型材102贴合在内胆101的外壁面上并包括内胆101设置。
进一步地，该热水器还包括填充在外壳103及保温型材102之间的发泡隔热材料104。如此，通过设置发泡隔热材料104可以进一步地增强热水器的隔热保温效果，此外，由于发泡后发泡隔热材料104可以完全将保温型材102包裹并密封，如此，即增强了保温型材102的安装强度，同时可以形成优异的复合保温层。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (18)

  1. 一种保温型材，应用于热水器，其特征在于，包括：
    隔气外层，所述隔气外层具有扁状容腔；
    多个微气泡，填充在所述扁状容腔内，所述微气泡内填充有隔热气体，且所述微气泡在任一方向上的尺寸小于3mm。
  2. 如权利要求1所述的保温型材，其特征在于，所述隔热气体的导热系数低于25mW/（m•K）。
  3. 如权利要求2所述的保温型材，其特征在于，所述隔热气体为氩气、氪气、氙气、二氧化碳、环戊烷、异戊烷中的一种或两种以上的混合物。
  4. 如权利要求1所述的保温型材，其特征在于，所述微气泡内还填充有反热辐射的纳米粉体。
  5. 如权利要求1所述的保温型材，其特征在于，所述隔气外层及所述微气泡的壁体的材质为塑料膜、金属箔复合塑料膜、镀有金属层的塑料复合膜中的一层或两层以上的复合膜材料。
  6. 如权利要求1所述的保温型材，其特征在于，还包括贴合在隔气外层正面及背面处的反射层，所述反射层为设置在所述隔气外层上的膜层或涂层。
  7. 一种热水器，其特征在于，包括：
    内胆，用于存储加热水体；
    保温型材，包括：隔气外层，所述隔气外层具有扁状容腔；以及多个微气泡，填充在所述扁状容腔内，所述微气泡内填充有隔热气体，且所述微气泡在任一方向上的尺寸小于3mm；所述保温型材贴合在所述内胆的外壁面上，并包裹所述内胆设置；
    外壳，包裹在所述保温型材的外围。
  8. 如权利要求7所述的热水器，其特征在于，还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
  9. 如权利要求7所述的热水器，其特征在于，所述隔热气体的导热系数低于25mW/（m•K）。
  10. 如权利要求9所述的热水器，其特征在于，还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
  11. 如权利要求9所述的保温型材，其特征在于，所述隔热气体为氩气、氪气、氙气、二氧化碳、环戊烷、异戊烷中的一种或两种以上的混合物。
  12. 如权利要求11所述的热水器，其特征在于，还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
  13. 如权利要求7所述的热水器，其特征在于，所述微气泡内还填充有反热辐射的纳米粉体。
  14. 如权利要求13所述的热水器，其特征在于，还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
  15. 如权利要求7所述的热水器，其特征在于，所述隔气外层及所述微气泡的壁体的材质为塑料膜、金属箔复合塑料膜、镀有金属层的塑料复合膜中的一层或两层以上的复合膜材料。
  16. 如权利要求15所述的热水器，其特征在于，还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
  17. 如权利要求7所述的热水器，其特征在于，还包括贴合在隔气外层正面及背面处的反射层，所述反射层为设置在所述隔气外层上的膜层或涂层。
  18. 如权利要求7所述的热水器，其特征在于，还包括填充在所述外壳及所述保温型材之间的发泡隔热材料。
PCT/CN2017/075239 2017-02-28 2017-02-28 保温型材及热水器 Ceased WO2018157293A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004060915A (ja) * 2002-07-25 2004-02-26 Toto Ltd 給湯装置
CN201772200U (zh) * 2010-07-16 2011-03-23 李志雄 一种保温管
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