CN2215167Y - Dry boiling preventing heating device for electric kettle - Google Patents
Dry boiling preventing heating device for electric kettle Download PDFInfo
- Publication number
- CN2215167Y CN2215167Y CN 94219890 CN94219890U CN2215167Y CN 2215167 Y CN2215167 Y CN 2215167Y CN 94219890 CN94219890 CN 94219890 CN 94219890 U CN94219890 U CN 94219890U CN 2215167 Y CN2215167 Y CN 2215167Y
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- CN
- China
- Prior art keywords
- electrothermal tube
- bimetal leaf
- utility
- model
- dry
- 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.)
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Abstract
The utility model relates to a dry boiling preventing heating device for an electric kettle, which comprises an electrothermal tube (6), a casting (1), two plug pins (2) of a power supply arranged in the casing, and a dry boiling preventing device, wherein, the dry boiling preventing device is composed of a bimetal leaf (7), a push bar (8), an elastic resetting device of the push bar, and a moving contact pair (11). The bimetal leaf (7) is directly contacted with the electrothermal tube (6) to sense the temperature changes of the electrothermal tube, and the deformation of the bimetal leaf decides whether the push bar (8) positioned on the back of the bimetal leaf pushes a contact piece (12) to separate the moving contact pair (11) in order to cut off a circuit and achieve the purpose of safe protection. The utility model senses the temperature change of the electrothermal tube directly via the bimetal leaf, so the utility model is more reliable and the control of the on-off of the circuit is more timely. The utility model has simple structure, and the installation and the usage of the utility model are the same with the existing electric kettle.
Description
The utility model relates to a kind of heater of electric kettle, particularly a kind of insulating pot heater with anti-dry function.
No matter be now in family or in office, people begin generally to adopt insulating pot to heat up water, but the various insulating pots of Chu Shouing are simply electrothermal tube to be directly installed in the kettle mostly in the market, during use water being poured into switches on behind kettle and the submergence electrothermal tube heats up water, and does not have extra anti-dry burning device; So under normal circumstances, because of the electrothermal tube in the kettle always in the immersion water, its temperature remains in the normal range (NR) always, but in case, or busy leaving (this is recurrent thing) because people's carelessness does not notice that water-in-kettle is boiled, insulating pot is easy to be dryouied the dry combustion method that causes electrothermal tube because of the water in the kettle, electrothermal tube is owing to can not get timely heat radiation, gently then electrothermal tube by scaling loss, heavy then will cause fire.In order to address this problem, people begin to develop the insulating pot with anti-dry burning device, as notification number is disclosed new design in the utility model patent " electric heating teapot safety device " of CN2113015U and the utility model patent " insulating pot auto-power-off device " that notification number is CN2116430U, but they all are based on water and boil the back principle that the kettle body weight can alleviate when dryouting, the support spring that alleviates by the bottom by perception kettle body weight lifts the kettle body and auto power off, because these schemes are not the direct variations in temperature by the perception electrothermal tube, this just exists the defective in the design inevitably, the auto switching of circuit is reliable inadequately, and is difficult to satisfy such as only burning low amounts of water or need boiling specific (special) requirements such as sterilization for a long time.
The purpose of this utility model provides a kind of anti-dry insulating pot heater that comes the control circuit break-make by direct perception electrothermal tube variations in temperature with regard to being for the defective that overcomes above-mentioned prior art.
Scheme of the present utility model is: anti-dry insulating pot heater comprises electrothermal tube and case that has two electrical connection pins and two power pins that are positioned at it, between described electrothermal tube and power pin, be provided with anti-dry burning device, comprise bimetal leaf, push rod and flexible restoring organ thereof and moving contact are right, bimetal leaf and electrothermal tube directly contact the variations in temperature of perception electrothermal tube, push rod is positioned at thereafter and is supported by flexible restoring organ, the other end of push rod is aimed at the right movable contact spring of moving contact, has at least one pair to be electrically connected with a pin of electrothermal tube by moving contact in described two power pins.When the electrothermal tube operate as normal, the deformation of bimetal leaf is not enough so that push rod is thereafter pushed movable contact spring open, and moving contact is to keeping in touch the holding circuit path; When electrothermal tube was warming up to abnormal temperature because of dry combustion method, the deformation of bimetal leaf was enough to make push rod thereafter to push movable contact spring open, made moving contact to separation, thereby in time cut off circuit, reached the safeguard protection purpose.
The utility model compared with prior art owing to directly pass through the variations in temperature of bimetal leaf perception electrothermal tube, has been controlled the break-make of circuit more reliably, more in time, and simple in structure, installs and uses consistent with existing insulating pot.
Description of drawings.
Fig. 1 is a structure cross-sectional schematic of the present utility model.
Fig. 2 is an electric principle wiring schematic diagram of the present utility model.
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, 2, the utility model embodiment comprises the case (1) of electrothermal tube (6), carrying spigots and power pin (2), shell body (3) and the anti-dry burning device in the case, and anti-dry burning device comprises that bimetal leaf (7), push rod (8) and flexible restoring organ thereof and moving contact are to (11); Electrothermal tube (6) is welded with a metal flange dish (5) and has two to be electrically connected pin (14), Dui Ying two power pins (2) are connected on the unitary housing body (3) by being fixed on case with being threaded of nut with it, and wherein a pin (2) is electrically connected with a pin (14) of electrothermal tube (11) by moving contact, another pin then can be electrically connected with another electrothermal tube pin simply and (not show among Fig. 1, referring to Fig. 2 electrical schematic diagram), can certainly be by another moving contact to connecting; Moving contact is made of movable contact spring (12), static contact (13) and silver contact thereof (11), is fixed on the shell body (3); Described flexible restoring organ is by support (9), support spring (10) and inner housing (4) are formed, bimetal leaf (7) is supported by support (9) front end and is close on the metal flange dish (5), support (9) supports and is connected on the inner housing (4) by two springs (10), and inner housing (4) is done limited moving forward and backward relatively, the middle position that push rod (8) passes support (9) and inner housing (4) be able to spacing and relatively support (9) do limited moving forward and backward, the one end is against on the bimetal leaf (7), the other end is aimed at movable contact spring (12), described inner housing (4) is connected one with shell body (3) by screw, described case (1), shell body (3), inner housing (4) and support (9) are made by insulating material, (15) are electrical connecting element among Fig. 2, can be conductive metal sheets.
Described stent support spring (10) also can be other flexible support members, and its main purpose is that the bimetal leaf (7) of support front end and metal flange dish (5) are kept in touch.
When the utility model operate as normal, electrothermal tube is in normal temperature, and the deformation of bimetal leaf (7) is not enough so that push rod thereafter (8) is pushed movable contact spring (12) open, and moving contact keeps in touch (11), the holding circuit path; When electrothermal tube was warming up to abnormal temperature because of dry combustion method, the deformation of bimetal leaf (7) was pushed movable contact spring (12) open even as big as making push rod (8) thereafter, moving contact is separated (11), thereby in time cut off circuit, reached the safeguard protection purpose.
Claims (5)
1. anti-dry insulating pot heater, comprise and have two two power pins (2) that are electrically connected the electrothermal tube (6) and the case (1) of pin (14) and are positioned at it, it is characterized in that: between described electrothermal tube (6) and power pin (2), be provided with anti-dry burning device, comprise bimetal leaf (7), push rod (8) and flexible restoring organ thereof and moving contact are to (11), bimetal leaf (7) and electrothermal tube (6) directly contact the variations in temperature of perception electrothermal tube, push rod (8) is positioned at thereafter and is supported by flexible restoring organ, the other end of push rod (8) is aimed at the movable contact spring (12) of moving contact to (11), has at least one by moving contact (11) to be electrically connected with a pin (14) of electrothermal tube in described two power pins (2).
2. anti-dry insulating pot heater as claimed in claim 1 is characterized in that described electrothermal tube (6) is fixed with metal flange dish (5), and bimetal leaf (7) promptly is resisted against on this metal flange dish (5).
3. anti-dry insulating pot heater as claimed in claim 1, it is characterized in that described flexible restoring organ is made up of support (9), flexible support members and inner housing (4), the two ends of described bimetal leaf (7) are supported by support (9), support (9) is then supported and is connected on the inner housing (4) by flexible support members, inner housing (4) is done limited moving forward and backward relatively, the middle position that described push rod (8) passes support (9) and inner housing (4) be able to spacing and relatively support (9) do limited moving forward and backward.
4. anti-dry insulating pot heater as claimed in claim 3 is characterized in that described flexible support members is spring (10).
5. anti-dry insulating pot heater as claimed in claim 1 is characterized in that described power pin (2) is installed on the shell body (3) by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219890 CN2215167Y (en) | 1994-08-26 | 1994-08-26 | Dry boiling preventing heating device for electric kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219890 CN2215167Y (en) | 1994-08-26 | 1994-08-26 | Dry boiling preventing heating device for electric kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2215167Y true CN2215167Y (en) | 1995-12-13 |
Family
ID=33834625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94219890 Expired - Fee Related CN2215167Y (en) | 1994-08-26 | 1994-08-26 | Dry boiling preventing heating device for electric kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2215167Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954288A (en) * | 2017-05-16 | 2017-07-14 | 叶人龙 | Intelligent safety electric heating tube of kettle |
| CN108175287A (en) * | 2018-01-18 | 2018-06-19 | 广东小豚电器科技有限公司 | A kind of two-phase open circuit electrothermal tube temperature controller assembly |
| CN113397382A (en) * | 2021-08-09 | 2021-09-17 | 温州雷凡科技有限公司 | Electronic temp. controller for electric kettle |
-
1994
- 1994-08-26 CN CN 94219890 patent/CN2215167Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954288A (en) * | 2017-05-16 | 2017-07-14 | 叶人龙 | Intelligent safety electric heating tube of kettle |
| CN108175287A (en) * | 2018-01-18 | 2018-06-19 | 广东小豚电器科技有限公司 | A kind of two-phase open circuit electrothermal tube temperature controller assembly |
| CN113397382A (en) * | 2021-08-09 | 2021-09-17 | 温州雷凡科技有限公司 | Electronic temp. controller for electric kettle |
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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 |