CN1199498A - Improvements relating to thermal controls for liquid heating vessels - Google Patents
Improvements relating to thermal controls for liquid heating vessels Download PDFInfo
- Publication number
- CN1199498A CN1199498A CN 97191163 CN97191163A CN1199498A CN 1199498 A CN1199498 A CN 1199498A CN 97191163 CN97191163 CN 97191163 CN 97191163 A CN97191163 A CN 97191163A CN 1199498 A CN1199498 A CN 1199498A
- Authority
- CN
- China
- Prior art keywords
- heating element
- controller
- mentioned
- plane
- control
- 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.)
- Granted
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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
- H05B1/0227—Applications
- H05B1/0288—Applications for non specified applications
- H05B1/0294—Planar elements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
- A47J27/21058—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
- H01H37/043—Mountings on controlled apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Resistance Heating (AREA)
Abstract
An element protecter control is assembled with a planar electric heating element of a water heating vessel to protect the heating element against overheating by switching off the power supply thereto, the control being biased towards the heating element by means of a cantilevered spring (35) and comprising a body portion (1, 2) to juxtaposed with the planar heating element at a certain predetermined spacing therefrom, spacers (25) formed of heat-resistant ceramics material being provided on said body portion to ensure said spacing, and a thermally-responsive member (9) of the control being arranged so as to bear against the planar heating element and to deform under spring pressure when the heating element temperature exceeds a certain level, such deformation being arranged to effect a switch-operating movement for disconnecting the heating element from its power supply. The resilient mounting of the control relative to the heating element and the use of the spacers (25) ensures that the control remains at a proper spacing from the heating element even when the latter is subject to thermal expansion/contraction effects.
Description
Invention field
The present invention relates to for example temperature controller of devices such as electric food warmer, the electric cup of being with handle, electric coffee pot, electric heating pan, electric heating cylinder, laboratory equipment of electric-heating liquid container; this controller plays the component protection effect; the superheat state that can respond detected parts is cut off the power supply of container heating element or is reduced its power supply, and this superheat state is not owing to for example guarantee at first to fill with container and just begin to switch on to heating element and cause.Sort controller is known, so-called component protection controller.
Background of invention
A kind of component protection controller that is used for the plane electric heating element is disclosed in our british patent specification No.GB-A-2283156; this controller comprises the stratie of certain pattern that forms at the bottom of the electrically insulating substrate; this substrate comprises a stainless sheet steel; form skim glass or other high temperature resistant electrical insulating material in upper endcap; stratie is formed on this glassy layer, forms the glass of another thin layer or other high temperature resistant electrical insulating material then on stratie again.The controller that illustrates in British patent GB-A-2283156 is specifically with reference to the improved form of its Fig. 3 A, 3B and 3C controller explanation and that illustrate in our british patent specification No.GB-A-2248724 in our british patent specification No.GB-A-2194099.British patent GB-A-2283156, GB-A-2194099 and GB-A-2248724 will be hereby incorporated by.
As described in british patent specification GB-A-2283156, then controller is fixed on the heating element on these bolts and the component protection controller is contained on the plane heating element by construction bolt is contained in.Yet owing to the thermal expansion effect goes wrong, this thermal expansion effect is relevant with heating element structure, and it may surpass the design and installation fit tolerance of controller.This situation is because the very high power level of heating element causes; this causes the thermal expansion effect; particularly produce differentiated expansion between (water) side and its dried (stratie) side wetting of heating element; this causes in use, and heating element produces very significant displacement; particularly under the situation of dry combustion method, the time and the situation bottom offset that heating element is still switched on is more remarkable, just need the operation of component protection controller this moment promptly at dried kettle.Be easy to be subjected to this influence that is subjected to warm-up movement of plane heating element especially at the component protection controller described in the British patent GB-A-2283156; because bimetal piece for main protection; this component protection controller comprises auxiliary or the stand-by protection system; this protection system is the form of molded plastics support; this support is arranged on the heating element and is suitable under the spring pressure effect deformation taking place, thereby when the plastics of support soften under the effect of heating element excessive temperature the electric contact in the controller is opened.For second protective cradle is correctly worked, need between the main body peace flat heating element of controller, keep predetermined minimum distance, we find, can not always guarantee to reach this situation of the described configuration of GB-A-2283156.
The problems referred to above do not occur over just the construction bolt that utilizes on the heating element element protection controller are fixed under the situation of plane heating element, and also occur in and use other device controller is clamped under the situation on the heating element securely.In addition, this problem is not limited to the plane heating element of the above-mentioned type, and this problem also takes place when adopting the plane heating element of other type, in the plane heating element of this other type, be contained in that wrapping wire stratie in the tubular metal cover is cast into or pincers is gone in the aluminium sheet.
Goal of the invention and general introduction
Main purpose of the present invention is to overcome the problems referred to above or reduce the problems referred to above at least basically.
According to the present invention, by component protection controller elasticity is installed on the plane heating element and can achieves the above object, wherein, controller is pressed on the heating element with spring; The spacer of preferably being made by ceramic material by heat proof material is set on the main body of controller, makes controller and plane heating element keep a suitable spacing.
More generally; one aspect of the present invention provides a kind of component protection controller that is used with the plane electrical heating elements; so that prevent that by deenergization heating element is overheated; this controller comprises one with the plane heating element and put and be spaced from the main part of a preset space length; be contained in the spacer of making by heat proof material on the aforementioned body part to guarantee above-mentioned interval; a thermal response component with above-mentioned controller; this response component is configured to be pressed against when controller uses on the plane heating element and when the temperature of heating element surpasses certain value and can under the spring pressure effect deformation takes place; this deformation is configured to open one group of contact in the controller, so heating element and its power supply are disconnected.
The present invention also proposes to make above-mentioned component protection controller and the combined method of plane electric heating element; this controller is contained on the heating element by elastic device, and this elastic device is pushed controller to heating element makes above-mentioned spacer be pressed against on the surface of heating element.
In affiliated claims, specifically stated above-mentioned and other feature of the present invention and aspect, describe with reference to the accompanying drawings, be explained in more detail the present invention thus.
Accompanying drawing is described
Figure 1A～1F illustrates and implements exemplary component protection controller of the present invention, Figure 1A is a controller when using and the plane graph seen of the juxtaposed side of heating element, Figure 1B is the plane graph of controller opposite side, Fig. 1 C is the front view of shorter side, Fig. 1 D is the front view of longer side, and Fig. 1 E and 1F are perspective views;
Fig. 2 is the decomposition diagram corresponding to Fig. 1 among the British patent GB-A-2283156, and the structure of prior art component protection controller is shown, and this controller is similar to the controller shown in Figure 1A～1F on the bilge construction within it especially very much; And
Fig. 3 schematically illustrates being connected of controller shown in Figure 1A～1F and plane heating element.
Embodiment describes in detail
Component protection controller shown in Figure 1A～1F is basically as its controller shown in Figure 1 among the British patent GB-A-2283156; for ease of reference; in the following description, identical with used numbering among British patent GB-A-2283156 numbering is represented identical parts.Fig. 2 of accompanying drawing is corresponding to the Fig. 1 among the British patent GB-A-2283156.
Component protection controller shown in Fig. 2 comprises the first and second moulded plastics body parts 1 and 2, and these two parts are suitable for being fitted together, and blocks first and second terminals 3 and 4 and elastic metallic conductor 5,6 and 7 betwixt.Bimetallic main switch driver 8 is housed on the opposite side of main part 2, this driver is contained on the plastic stent 9 in the mode that is similar to controller described in British patent GB-A-2194009 and the GB-A-2248724, and this support is suitable for again being configured in a predefined manner on the front surface (can not see) of main part 2.
Bimetallic main switch driver 8 disposes in the mode described in British patent GB-A-2194099 and the GB-A-2248724 with basic identical, so that determine the state of the switch that the part 10 and 11 by elastic metallic conductor 5 and 6 forms, push rod 12 be set for this purpose.Form each other under part 10 and 11 normal conditions and electrically contact, when the main switch driver 8 of bimetallic during at work in response to the superheat state of heating element, part 10 and 11 is disconnected by push rod 12.No matter which kind of reason, at main switch driver just in case when malfunctioning,, allow heating element continue energising for the contact between breaking part 10 and 11, the manipulable temperature of auxiliary heat response driver that its temperature is risen to constitute by plastic stent 9.Support 9 have towards after protuberance 13 and 14, this protuberance is designed to pass main part 2, and contact with the part 15 and 16 of elastic metallic conductor 5 and 7, thereby when controller was operably connected to plane heating parts and support 9 and is pushed rearward to main part 2, elastic metallic part 15 and 16 was just shifted onto with terminal 3 and 4 by protuberance 13 and 14 respectively and is contacted.This support 9 has four legs 17 and pin 18, this pin is placed on the rear surface of relevant heating element, when temp of heating element rises to when making the temperature that leg 17 begins to melt, this support 9 is just collapsed to heating element along direction forward under the elastic force effect of conductor part 15 and 16, makes conductor part 15 break away from and the terminal 3 of controller and 4 contact with 16 at last.
The component protection controller of Fig. 1 is fit to and overall smooth heater block coupling; and can obviously find out; elastic metallic conductor 6 and 7 has the part of protracting 19 and 20; this part is fit to protrude from the front portion of controller main part 2; and form with the terminal part of plane heating parts and to electrically contact, thus by controller to the heating element transmission of electric energy.
With reference to Figure 1A～1F; as can be seen; in use with on the surface of the juxtaposed controller of plane heating element the spacer 25 that three ceramic materials are made is housed; this spacer is contained in the Hollow Pillar of component protection part 2, makes pin 18 coplines of itself and main switch driver 8 of bimetallic and plastic stent 9.This spacer 25 guarantees the main switch driver 8 of bimetallic is correctly located with the plastic stent 9 relative surface energies that dispose the plane heating element of spacer thereon, and owing to adopt heat-resisting ceramic material, thereby can prevent that the moulded plastics body of controller is overheated preferably by the low for example talc materials manufacturing of roasting of material of thermal conductivity.
Figure 1B and 1F are illustrated in structure 30 are set on the controller side surface, and when controller and plane heating parts and when putting, this structure from heating element farthest.This structure 30 makes controller fixedly positioning with respect to cantilever fastening spring 35, as shown in Figure 3, this cantilever spring 35 forms secure engagement at its free end and structure 30, and its other end is contained on the construction bolt 40, this bolt 40 is formed on making things convenient on the position of plane heating element 45, perhaps is formed on the part of relevant container or on other parts relevant with container.
By Figure 1A～1F and the illustrated configuration of Fig. 3 of reference accompanying drawing, the component protection controller utilizes flexible bias pressure to be fixed on the precalculated position of plane heating parts, and can guarantee that the surface of controller and heating element separates necessary spacing.This configuration can adapt to the thermal expansion of heating element and can not hinder the correct location of controller with respect to heating element, does not also hinder the correct location of the plastic stent of collapsing of controller with respect to heating element.
Describe the present invention with reference to specific embodiments in the above, but will be appreciated that, the invention is not restricted to described embodiment, and can change and retrofit and do not break away from the spirit or scope of the present invention of being stated in the appended claims book.For example, can not use component protection controller and plane heating element are kept the cantilever spring of operative relationship, and adopt the spring that is the crossbeam form, this beam both had been supported in two end, again at centre position supporting controller.
Claims (12)
1. component protection controller that the plane electric heating element with water heating vessels fits together, this controller prevents that by the power supply that cuts off heating element heating element is overheated, this controller comprises: main part, and predetermined spacing is put and be spaced to it and plane heating element also; Spacer is made and is contained in aforementioned body by heat proof material and partly goes up to guarantee above-mentioned spacing; The thermal response component of above-mentioned controller, it is configured to be pressed against on the plane heating element when above-mentioned controller is worked, and when surpassing certain value, the temperature of heating element can under the effect at spring pressure deformation take place, this deformation is configured to influence the switching manipulation campaign, so that heating element and its power supply are disconnected.
2. controller as claimed in claim 1 is characterized in that above-mentioned controller comprises the switch contact by the State Control of above-mentioned thermal response component.
3. controller as claimed in claim 2, it is characterized in that above-mentioned switch contact comprises at least one elastic component, at the controller duration of work, this elastic component is towards the plane heating element above-mentioned thermal response component of setovering, and above-mentioned elastic component provides spring pressure to the deformation of above-mentioned thermal response component.
4. as the described controller of above-mentioned each claim, it is characterized in that above-mentioned thermal response component is by the synthetic plastic manufacturing, deliquescing when these plastics are higher than predetermined temperature.
5. as the described controller of above-mentioned each claim, it is characterized in that, above-mentioned heat is rung parts and is comprised a collapsed support that is used for bimetal element, above-mentioned bimetal piece is configured to respond the overheated of above-mentioned plane heating element and plays the major control effect, and above-mentioned support of collapsing is configured to can play auxiliary control action when the above-mentioned bimetal piece contingency that plays the major control effect is malfunctioning.
6. as the described controller of above-mentioned each claim, it is characterized in that above-mentioned spacer ceramic material.
7. controller as claimed in claim 6 is characterized in that the thermal conductivity of above-mentioned ceramic material is low.
One kind as claimed in claim 1 and basically with reference to the described controller of Figure 1A～1F in the accompanying drawing.
9. the combination of plane electric heating element and the described controller of above-mentioned each claim.
10. combination as claimed in claim 9 is characterized in that, above-mentioned controller utilizes elastic device to be fixed on the electric heating element, and this elastic device is towards the heating element offset controller, and this spacer guarantees the predetermined space between controller and electric heating element.
11. combination as claimed in claim 10 is characterized in that, this elastic device comprises spring.
12. an electric liquid heating vessels, it comprises as claim 9,10 or 11 described combinations.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9614667.5 | 1996-07-12 | ||
| GB9614667A GB2315366B (en) | 1996-07-12 | 1996-07-12 | Improvements relating to thermal controls for liquid heating vessels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1199498A true CN1199498A (en) | 1998-11-18 |
| CN1134808C CN1134808C (en) | 2004-01-14 |
Family
ID=10796798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971911630A Expired - Fee Related CN1134808C (en) | 1996-07-12 | 1997-07-14 | Improvements relating to thermal controls for liquid heating vessels |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1134808C (en) |
| AU (1) | AU3551397A (en) |
| GB (1) | GB2315366B (en) |
| HK (1) | HK1002579A1 (en) |
| WO (1) | WO1998002895A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104039203A (en) * | 2011-12-23 | 2014-09-10 | 翱泰温控器(深圳)有限公司 | Controls for heated liquid vessels and electrical appliance |
| CN108481916A (en) * | 2018-04-06 | 2018-09-04 | 崔浩轩 | A kind of ink jet numbering machine Ink box device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054903A2 (en) * | 1998-04-21 | 1999-10-28 | Otter Controls Limited | Improvements relating to the control of electric heating elements |
| GB2364890A (en) | 2000-07-25 | 2002-02-13 | Otter Controls Ltd | Securing planar heating element in liquid heating vessel |
| DE10313861A1 (en) * | 2003-03-21 | 2004-09-30 | Bleckmann Gmbh | Pre-assembled connection module |
| US8085009B2 (en) | 2007-08-13 | 2011-12-27 | The Powerwise Group, Inc. | IGBT/FET-based energy savings device for reducing a predetermined amount of voltage using pulse width modulation |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB894142A (en) * | 1959-07-25 | 1962-04-18 | Graviner Manufacturing Co | Improvements in or relating to temperature responsive switches |
| US3883717A (en) * | 1974-04-01 | 1975-05-13 | Michael J Delpercio | Mounting installation for temperature sensing switch |
| CA1206505A (en) * | 1982-03-18 | 1986-06-24 | Richard A. Phillips | Immersed element protection |
| DE8402834U1 (en) * | 1984-02-01 | 1984-05-10 | Rowenta-Werke Gmbh, 6050 Offenbach | Temperature safety switch |
| DE3839244C2 (en) * | 1988-02-24 | 1993-12-09 | Webasto Ag Fahrzeugtechnik | Heater, in particular vehicle auxiliary heater |
| DE4233676A1 (en) * | 1992-10-07 | 1994-04-14 | Ego Elektro Blanc & Fischer | Electric radiator for media, especially flow heaters |
| GB2283156B (en) * | 1993-10-21 | 1997-09-17 | Otter Controls Ltd | Improvements relating to electrical heating elements and controls therefor |
| DE19505621A1 (en) * | 1995-02-18 | 1996-08-22 | Ego Elektro Blanc & Fischer | Overheating protection for electrical heating devices |
-
1996
- 1996-07-12 GB GB9614667A patent/GB2315366B/en not_active Expired - Fee Related
-
1997
- 1997-07-14 CN CNB971911630A patent/CN1134808C/en not_active Expired - Fee Related
- 1997-07-14 AU AU35513/97A patent/AU3551397A/en not_active Abandoned
- 1997-07-14 WO PCT/GB1997/001910 patent/WO1998002895A1/en active Application Filing
-
1998
- 1998-03-05 HK HK98101844A patent/HK1002579A1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104039203A (en) * | 2011-12-23 | 2014-09-10 | 翱泰温控器(深圳)有限公司 | Controls for heated liquid vessels and electrical appliance |
| CN104039203B (en) * | 2011-12-23 | 2017-03-15 | 翱泰温控器（惠州）有限公司 | For heating the control device of liquid container and electric device |
| CN108481916A (en) * | 2018-04-06 | 2018-09-04 | 崔浩轩 | A kind of ink jet numbering machine Ink box device |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1002579A1 (en) | 1998-09-04 |
| GB2315366A (en) | 1998-01-28 |
| AU3551397A (en) | 1998-02-09 |
| GB2315366B (en) | 2000-10-18 |
| CN1134808C (en) | 2004-01-14 |
| GB9614667D0 (en) | 1996-09-04 |
| WO1998002895A1 (en) | 1998-01-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040114 |