CN2388794Y - 厚膜加热器 - Google Patents

厚膜加热器 Download PDF

Info

Publication number
CN2388794Y
CN2388794Y CN98208708U CN98208708U CN2388794Y CN 2388794 Y CN2388794 Y CN 2388794Y CN 98208708 U CN98208708 U CN 98208708U CN 98208708 U CN98208708 U CN 98208708U CN 2388794 Y CN2388794 Y CN 2388794Y
Authority
CN
China
Prior art keywords
contact
contact element
heater
thick film
printed wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN98208708U
Other languages
English (en)
Inventor
J·C·泰勒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Strix Ltd
Original Assignee
Strix Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Strix Ltd filed Critical Strix Ltd
Application granted granted Critical
Publication of CN2388794Y publication Critical patent/CN2388794Y/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0213—Switches using bimetallic elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/262—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Contacts (AREA)
  • Surface Heating Bodies (AREA)
  • Resistance Heating (AREA)

Abstract

本实用新型涉及厚膜加热器领域,这种加热器的问题在于加热器的加热印刷电路端部需连接电接触元件。根据本实用新型,一个由银制或类似材料制成的电接触元件16连接到加热器印刷电路的触点安放凸缘14上,本实用新型在厚膜加热器中应用,例如用于水壶和热水罐。

Description

厚膜加热器
本实用新型涉及一种厚膜加热器，特别可用在象水壶、热水罐等这样的液体加热装置但不专门用在这些方面的厚膜加热器。
厚膜加热器包括通常所说的印制并烧制在一个电绝热基片上的‘厚膜’电阻加热印刷线路。典型的生产过程是将一层或多层绝缘玻璃陶瓷印剂附着在金属基体上，并在基体上烧制一个绝缘层。然后按要求的印刷图形将电阻印剂印制在绝热层上并烧制形成加热印刷线路。再用同样被烧制的保护性玻璃瓷釉覆盖印刷线路。
加热印刷线路也设有与印刷线路形成电连接的接线端子。可用几种方式实现上述连接。例如，一种建议是使用适当的焊料将连接电线焊到印刷线路上。但是，这样的连接易脱开损坏，更普通的是，印刷线路配有印制银触点凸缘。通常这些凸缘是通过用合适的印剂印在印刷线路端部之上然后烧制形成的，例如用成形的片簧，(如GB2283156所示)或通过一个支撑在弹簧上的闸刀式开关与印刷电路相连。带有这种触点的缺点仅仅为线接触，这意味着将可能发生接触过热。若凸缘很薄(通常为10-15μm)则不能维持很长时间。
此外，印刷线路上的被用作为这些触点中触点对的一个固定触点是不能满足需要的，因为它们不能抵抗当触点打开和关闭时发生的磨损和击穿。为此，在这种应用中，需要一个更坚固的触点以便能经受住因为控制箱远离印刷线路而常常出现的磨损和/或击穿。
为此，根据第一方面，本实用新型的目的在于提供一种厚膜加热器，它包括一个设置在电绝缘基片上的厚膜加热器印刷线路，和一个连接到加热器上的电接触元件。
根据本实用新型，将一个单独的接触元件连接到加热器的一个触点上，这种触点可更好地抵抗特别是在一组开关触点中的一个触点之处出现的磨损和高温，此外，即使用象片簧这样的非移动连接也可能实现更满意的电接触，这种连接触点采用下层的印刷线路可提供一个大的接触区域以减小接触面的热量，从而延长了触点的寿命。
使用导电连接材料将接触元件连接到加热器上，例如，用能耐加热器预期工作温度的钎或铜进行连接。这可以在加热器加工期间烧制操作过程中实现。然而，业已发现，如果接触元件只设置在加热器上未烧制的材料区域然后将它与接触元件浇制成最后的烧制材料，可以实现非常牢固的连接。
接触元件可以设置在印刷线路本身的没有烧制的部分上，但是更可取的是设置在高传导材料的触点安放凸缘上，例如目前通常用与印刷线路电连接的延长触点凸缘。
不必将接触元件设置在覆盖印刷线路的部分这样的触点安放凸缘上。例如，触点安放凸缘可以延伸，并且可将接触元件设置在其远离印刷线路的一端。
可以作为单独的工序在加热器上烧制接触元件，但是更可取的是在制造加热器的其它工序中烧制同时进行。例如，可以将加热器印刷线路，触点安放凸缘，甚至釉面层印制在已烧制的或未烧制绝缘的基片上。所有这些印制工作完成后，将接触元件设置在中间接触层，然后烧制整个组件。
接触元件可以由常规接触材料制成，作为优先使用之处，接触元件可用来构成一组开关触点中的一个，形成接触面的触点最好用Ag/Cdo，Ag/No制作，或更可取的是用具有很低接触电阻的纯银制作。这样对接触区的加热最小故可使触点下方的印刷线路和绝缘材料的温度达到最低。
接触元件也可以是一种具有涂覆如上所述的合适的衬底材料的合成触点，优先选用的衬底材料是铁类合金，例如含有镍和/或铬的合金而不是更常用的Cu/Ni合金衬底材料。优先选用在烧制期间具有较高的抗氧化能力的铁类合金。
接触元件可以从接触材料的线材或带材剪切而成，此处，触点的朝向加热器的一侧可以是不平的，例如加工成环状或横向开口的图形以改善接触元件的固着力，此外，或另一方面，接触元件的边缘可以是不平的，例如加工成锯齿状改善嵌入拚合下层材料的性能。
下面将参考附图，仅通过例子的方式描述对优选实施例进行描述；
图1表示本实用新型第一个实施例；
图2为示意图，它表示沿图1中II-II线剖开的剖视图；
图3表示接触元件产品示意图；和
图4表示本实用新型另外一个实施例；
首先参考图1，一个厚膜加热器2包括一个0.5mm厚不锈钢盘4，其上面设有一层100μm厚的绝缘材料层6。在绝缘材料层6上面盘旋厚金膜加热印刷电路8，大约15μm厚。
大约15μm厚的保护釉层10(图2)基本上涂覆在盘4整个表面上。为此，在印刷线路上围绕3个接触位置14设有小孔12，以便在这些位置可以与印刷线路8电连接。
在每一个接触位置14，大约0.5mm厚的银接触元件16通过银触点安放凸缘18连接到印刷线路8。
每一个接触元件16通常具有方形的截面，如图3所示，通过切割如从带20的一端冲压成形，切口是锯齿形，在接触元件16上设有对置的锯齿边缘22，这将改善烧制期间接触元件与印刷线路的连接性能，如下面所述，将材料朝上拉制成锯齿形。
现在将描述生产上述加热器2具体的方法。
首先，用一道或几道工序将如Dupont 3500这类的绝缘印剂层6印在盘4上，大约150-200μm厚，然后可在大约850℃温度下用30分钟时间对层5进行烧制以便生产完成的绝缘层6。
在烧制后，用如Dupont 3542和Dupont 3544之类的混合材料的抗热印刷线路8涂覆大约15-20μm厚。然后将Dupont 7760材料的触点安放凸缘18印制在适当位置大约15-20μm厚，最后将大约15-20μm厚的Dupont 3500材料釉层10印制到除接触位置14周围的区域外的整个绝缘层6上。
其后当整个触点安放凸缘18仍然潮润时，将接触元件16定位在在凸缘18上。接触元件16压入凸缘18以确保良好的接触，甚至可用振动方式到位以便消除接触元件16下的气泡等。
接触元件16一经定位，其后可在大约850℃的温度下用30分钟时间烧制加热器2即烧制印刷线路8触点安放凸缘18和釉层10，又将接触元件16连接在该位置上。在这个烧制过程中，触点安放凸缘18开始变成半流动状态，如果不是这样，借助于由毛细作用上述凸缘将充满在接触元件下表面的空隙。将材料朝上拉制使接触元件16边缘的周围成锯齿状。在这以后，凸缘材料将变硬牢固地确保接触元件定位。
业已发现，或许令人惊奇的是烧制过程中接触元件16没有氧化。
对于上述实施例在不超出本实用新型范围前提下可作出各种变形。例如，包括绝缘层6的所有各层可以同时烧制。同样，如图4所示，接触元件16不必直接覆盖到印刷电路8上。在这个实施例中，银接触凸缘18延伸至离开印刷电路8的一端并且接触元件16安装在远离印刷线路端的凸缘的端部24上。延长接触凸缘18的作用是保证接触元件16和印刷线路8电连接。
此外，接触元件16不一定是方形，而且可以设计成各种形状，例如，圆形，但是如上所述，在制造过程中方形或矩形接触元件具有优越性。

Claims (7)

1.一种厚膜加热器，其特征在于，包括一个设置在电绝缘基片上的厚膜加热印刷电路，和具有一个连接到加热器的电接触元件。
2.如权利要求1所述的厚膜加热器，其特征在于，上述接触元件被烧制到加热器上。
3.如权利要求1或2所述的厚膜加热器，其特征在于，上述接触元件连接到加热印刷线路上。
4.如权利要求3所述的厚膜加热器，其特征在于，上述接触元件位于设置在印刷线路上的触点安放凸缘上。
5.如权利要求4所述的厚膜加热器，其特征在于，所说的接触元件被压入凸缘材料中。
6.如权利要求1所述的厚膜加热器，其特征在于，还包括一附着在印刷线路上的釉层，印刷线路上有小孔以便与上述接触元件相通。
7.如权利要求1所述的厚膜加热器，其特征在于，上述接触元件由银制成。
CN98208708U 1997-02-17 1998-02-17 厚膜加热器 Expired - Fee Related CN2388794Y (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9703224.7 1997-02-17
GB9703224A GB2322272A (en) 1997-02-17 1997-02-17 Terminal arrangement for a thick film heater

Publications (1)

Publication Number Publication Date
CN2388794Y true CN2388794Y (zh) 2000-07-19

Family

ID=10807777

Family Applications (2)

Application Number Title Priority Date Filing Date
CN 98804187 Pending CN1252921A (zh) 1997-02-17 1998-02-17 厚膜加热器
CN98208708U Expired - Fee Related CN2388794Y (zh) 1997-02-17 1998-02-17 厚膜加热器

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN 98804187 Pending CN1252921A (zh) 1997-02-17 1998-02-17 厚膜加热器

Country Status (5)

Country Link
EP (1) EP1013147A1 (zh)
CN (2) CN1252921A (zh)
AU (1) AU6224298A (zh)
GB (1) GB2322272A (zh)
WO (1) WO1998036617A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6817088B1 (en) * 2000-06-16 2004-11-16 Watlow Electric Msg.C Termination method for thick film resistance heater
DE10111734A1 (de) * 2001-03-06 2002-09-26 Schott Glas Keramisches Kochsystem mit Glaskeramikplatte, Isolationsschicht und Heizelementen
GB0217351D0 (en) 2002-07-25 2002-09-04 Ceramaspeed Ltd Radiant electric heater
CN101500347B (zh) * 2009-03-03 2012-10-31 深圳市格普斯纳米电热科技有限公司 电热膜接电方法
DE102014202302B4 (de) * 2013-07-03 2015-02-19 Technische Universität Dresden Vorrichtung zum Beheizen von Vorformkörpern
KR102110417B1 (ko) * 2018-08-21 2020-05-13 엘지전자 주식회사 전기 히터
KR102048733B1 (ko) * 2018-08-21 2019-11-27 엘지전자 주식회사 전기 히터
KR102111332B1 (ko) 2018-10-11 2020-05-15 엘지전자 주식회사 전기 히터

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB737058A (en) * 1952-09-02 1955-09-21 Wmf Wuerttemberg Metallwaren Method of manufacturing heating conductors for electric heating apparatus
GB1112473A (en) * 1965-09-04 1968-05-08 Fuji Photo Film Co Ltd Improvements in and relating to the connection of leading wires to electrodes on surface electro-conductive elements
US4247981A (en) * 1979-06-18 1981-02-03 Western Electric Company, Inc. Methods of assembling interconnect members with printed circuit boards
NL8801182A (nl) * 1987-10-01 1989-05-01 Interconnection B V Verwarmingselement.
GB8803519D0 (en) * 1988-02-16 1988-03-16 Emi Plc Thorn Electrical connectors
GB8905014D0 (en) * 1989-03-04 1989-04-19 Emi Plc Thorn Electrical connectors
GB9215586D0 (en) * 1992-07-22 1992-09-02 Central Research Lab Ltd Electrical connection to thick film tracks
GB9423921D0 (en) * 1994-11-26 1995-01-11 Panaghe Stylianos Electrical connection method

Also Published As

Publication number Publication date
GB2322272A (en) 1998-08-19
CN1252921A (zh) 2000-05-10
EP1013147A1 (en) 2000-06-28
GB9703224D0 (en) 1997-04-09
WO1998036617A1 (en) 1998-08-20
AU6224298A (en) 1998-09-08

Similar Documents

Publication Publication Date Title
CN1058129C (zh) 液体电加热装置
CN2388794Y (zh) 厚膜加热器
CA1299631C (en) Thick film electrically resistive tracks
US6057530A (en) Fabric heating element and method of manufacture
CA1271215A (en) Flat electrical resistance heating element and heating article comprising such element
EP2044810B1 (en) Layered heater system having conductive overlays
CN1138454C (zh) 浸入式加热件和制造方法
CN101218854B (zh) 在用于加热液体的设备中应用的加热元件
US3845273A (en) Composite metal plate surface heating unit
US5699606A (en) Method of manufacturing a radiant electric heater
EP0783830B1 (de) Elektrisches heizelement
CN1202602A (zh) 薄膜型加热器及其制造方法
EP0980193A1 (de) Beheizbares Flächenelement
US5477031A (en) Electrical heating element, its manufacture and use
US5144279A (en) Resistor element with thin porous metallic layer covered with glass coating
CN1162047C (zh) 形成加热元件的方法及用其制造的元件以及包括该元件的电器
JP2756590B2 (ja) 電気湯沸かし器等に利用できるセラミックスヒータ
EP0637194A1 (en) Radiant electric heater
RU95120034A (ru) Композиционный гибкий электронагреватель поверхностного типа
CN205356721U (zh) 基于冲压附底工艺的加热膜电热盘
CN2369444Y (zh) 电热膜
EP0725557A1 (en) Heating device
CN2177417Y (zh) 陶瓷电热锅
JPH0328790B2 (zh)
JPH1116668A (ja) セラミック発熱体の製造方法

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee