CN101014219A - Electric heating tube with automatic temperature control and preventing dry burning - Google Patents
Electric heating tube with automatic temperature control and preventing dry burning Download PDFInfo
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- CN101014219A CN101014219A CN 200710019729 CN200710019729A CN101014219A CN 101014219 A CN101014219 A CN 101014219A CN 200710019729 CN200710019729 CN 200710019729 CN 200710019729 A CN200710019729 A CN 200710019729A CN 101014219 A CN101014219 A CN 101014219A
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Abstract
The invention relates to one electrical heating tube with automatic temperature control and dry burst, which comprises electric heating tube, temperature sense tube connected to electric heating tube and automatic reset temperature controller in side sense tube, wherein, the automatic reset controller also comprises one heating element. The invention has the following advantages: for earth connecting and for avoiding automatic reset controller and reverse breaks only with one power plug to stop heating element work to get automatic reset temperature point.
Description
Technical field
The present invention relates to a kind of electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method, is to the improvement of existing electric heating tube, belongs to the electrical heated appliance applied technical field.
Background technology
The electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method in the prior art generally is in electric heating tube or is used to install the bimetal chip thermostat of packing on the flange of electric heating tube and reaches temperature control that people are accustomed to claiming that the thermostat of this structure is the thermostat that automatically resets.With the solar water heater electrical auxiliary heater is example, in order to reach automatic temperature-adjusting control and to prevent dry combustion method, the aforesaid double-metal sheet type thermostat that automatically resets often is installed, but this thermostat in use seriously exposes following shortcoming: have in water tank under the normal condition of water, it can be controlled automatically to the water temperature in the case, yet when in the case when anhydrous, when electric heating arrives the design temperature point of thermostat, only show as the temporary transient power supply that disconnected, because when waiting to arrive the reset temperature point of thermostat, because of the energized that resets can begin heating again under anhydrous situation, therefore thermostat is in the state of operating at full capacity that disconnects repeatedly and reset, not only can quicken the damage of thermostat contact, but also can quicken electric heater wearing out in dry combustion method, and waste electric energy unreasonably.In view of said circumstances, bimetal chip thermostat can not reach anti-dry truly.
People have recognized above-mentioned technical problem and have made every effort to be remedied, the way that remedies is that a temperature controller with manual reset is installed again, because the intervention of temperature controller with manual reset, understand deenergization when under anhydrous situation, arriving the temperature spot of setting and play real anti-dry, but, because the installation and the use of temperature controller with manual reset can bring atypical technical problem, one, installing space is restricted; Its two, need the professional to open utensil after the temperature controller with manual reset action and just can carry out hand-reset; Its three because solar water heater installs (setting up) usually on the roof, climb onto the roof and carry out hand-reset and not only bother but also dangerous.
There are above-mentioned 3 shortcomings in view of temperature controller with manual reset again, so people bet sight in the warm protector of limit, but facts have proved, need to seek help from professional's replacing too for the replacing of limitting warm fuse, not only using to the user increases trouble, and the cycle that interruption is used is long.
Summary of the invention
Task of the present invention be to provide a kind of can play automatic temperature-adjusting control reliably and stop dry combustion method, that do not need hand-reset, can prolong thermostat and electric heater useful life effectively have automatic temperature-adjusting control and prevent the electric heating tube of dry combustion method.
Task of the present invention is finished like this, a kind of electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method, it comprises the electric heating body, with the temperature-sensitive pipe of electric heating tube sports association knot and place the thermostat that automatically resets in the temperature-sensitive pipe, the described thermostat that automatically resets also includes a heater element.
Heater element of the present invention is combined on the wall body of the thermostat that automatically resets, and a pair of pin of heater element is connected in parallel with the lead-in wire formation of the thermostat that automatically resets.
Heater element of the present invention is a thick-film resistor.
Heater element of the present invention is a constant temperature heating sheet.
Constant temperature heating sheet of the present invention is positive temperature coefficient thermistor (PTC).
Be in series with the warm protector of a limit on the lead-in wire of the thermostat that automatically resets of the present invention.
The thermostat that automatically resets of the present invention is arranged with the heatproof insulating sleeve outward.
The connection of temperature-sensitive pipe of the present invention and electric heating body is any one in direct contact and connection or the indirect connection.
Direct contact and connection of the present invention is that the outer wall of temperature-sensitive Guan Yiduan end and electric heating body fits.
Indirect connection of the present invention is for to be installed with a heat conduction support on the electric heating body, and an end end of temperature-sensitive pipe is fixed on the heat conduction support.
The present invention is because heater element in parallel on the thermostat that automatically resets of bimetal leaf structure in prior art, when arriving the temperature value that the thermostat that automatically resets sets, the electric heater temperature just disconnects, this moment, electric current was no longer by the thermostat that automatically resets, but pass through from heater element, make the heater element heating, provide and be higher than the temperature that the thermostat that automatically resets resets, make the thermostat that automatically resets to return to the temperature spot that is resetted and be in off-state all the time, electric heater can not heat all the time, even water tank is anhydrous, also can play the controller that prevents to automatically reset reliably disconnects repeatedly or resets, as long as the user pulls up attaching plug, heater element just quits work, and the thermostat that automatically resets this moment automatically restores to again and is able to automatically reset temperature spot.Therefore not only need not hand-reset, and can protect the whole service life of automatically reset thermostat and electric heater effectively.
Description of drawings
Fig. 1 is one embodiment of the invention structure chart.
Fig. 2 is the another embodiment of the present invention structure chart.
Fig. 3 is an also example structure figure of the present invention.
Fig. 4 is equipped with the schematic diagram of the thermostat that automatically resets of heater element for the present invention.
Fig. 5 is the be electrically connected schematic diagram of heater element of the present invention with the thermostat that automatically resets.
Embodiment
Embodiment 1:
In Fig. 1 and Fig. 3, the applicant has provided the electric heating body 1 of the employed and employed immersion heater of family of the water heater (claiming the boiled water machine again) that is suitable for the solar water heater electrical auxiliary heater and/or is suitable for enterprises and institutions, this electric heating body 1 constitute U-shaped on the whole, the end disposes one for the flange cover 11 that usefulness is installed, heat generating components 12 (showing as Fig. 5) in the electric heating body 1 is connected with power line as the exit end of heating wire, one end of temperature-sensitive pipe 2 is arranged in flange cover 11, the other end be the lower end extend in flange cover 11 outer and with the outer wall indirect contact of electric heating body 1, here alleged indirect contact is to fix a heat conduction support 6 on electric heating body 1, and the bottom of temperature-sensitive pipe 2 and heat conduction support 6 are fixed, also can be fitted on the electric heating body 1 by the bottom binding of heat conduction support 6 with temperature-sensitive pipe 2, heat conduction support 6 is a quoit.In use, with heat transferred heat conduction support 6, and then pass to temperature-sensitive pipe 2 by electric heating body 1, by thermostat 3 perception that automatically reset in the temperature-sensitive pipe 2 by heat conduction support 6.The thermostat 3 that automatically resets of the bimetal leaf structure identical with prior art is placed in the tube chamber of temperature-sensitive pipe 2, and its a pair of lead-in wire 31 leads to outside the flange cover 11.Main points as the technical scheme that the present invention recommended, on the body of thermostat 3 that automatically resets, be combined with a heater element 4, the a pair of pin 41 of heater element 4 is connected in parallel with the lead-in wire 31 of the thermostat 3 that automatically resets, and that is to say that heater element 4 is connected in parallel on the circuit of the thermostat 3 that automatically resets.Preferably, adopt thick-film resistor for heater element 4, it is to lay one piece of thick resistor 43 on potsherd 42, and with the body cementation of potsherd 42 with the thermostat 3 that automatically resets, making both structures is one (specifically asking for an interview Fig. 4 shows).For thick-film resistor 43, be the MX-II thick-film resistor as adopting the model of producing and selling by Changshu City, Jiangsu Province, China star Electronics Inc..Heater element 4 also can adopt PTC, PTC is cemented on the body of the controller 3 that automatically resets, and the leading foot of PTC is connected in parallel with lead-in wire 31.Whole thermostat 3 available heatproof insulating sleeve 7 covers after carrying heater element 4 that automatically reset protect.
Please, on the circuit of thermostat 3 that automatically resets, also can be connected in series one and limit warm protector 5 to realize multiple protective in conjunction with Fig. 5.Though the given electric heating body 1 of present embodiment takes the shape of the letter U, and is not subjected to the restriction of this shape.
Embodiment 2:
In Fig. 2, the applicant has provided the structure of touching has directly been pasted mutually with electric heating body 1 in the lower end of temperature-sensitive pipe 2, thereby can save heat conduction support 6 and directly connection of realization.All the other are with the description to embodiment 1.
Embodiment 3:
In Fig. 3, the applicant has provided the electric heating body 1 that widely is used on the insulating pot 8, the same thermostat 3 that automatically resets that is equipped with heater element 4 that is provided with in the temperature-sensitive pipe 2.All the other are with the description to embodiment 1.
In the foregoing description 1-3, lift and electric heating body 1 bending that all takes the shape of the letter U, promptly only be one if electric heating body 1 is designed to straight pipe type (more suitable in the solar energy electrical auxiliary heater), should be considered as equivalence so.
Have automatic temperature-adjusting control and prevent that the electric heating tube of dry combustion method from can show automatic temperature-adjusting control truly and preventing dry combustion method by the resulting the present invention of the foregoing description, specifically by following so that explain and.After water temperature in water tank or kettle arrives the disconnection set point of the thermostat 3 that automatically resets, owing to the effect of the bimetal leaf of the thermostat 3 that automatically resets is cut off the electricity supply, electric heater no longer heats, and that is to say heat generating components 12 (Fig. 5 shows) outage of electric heating body 1 and stops heating.Yet electric current is then from being connected in parallel on heater element 4 processes on the thermostat 3 that automatically resets, heater element 4 is in febrile state all the time, and its temperature is higher than the reset temperature point of the thermostat 3 that automatically resets, therefore, the thermostat 3 that automatically resets can't return to the temperature spot that is resetted and be in the state of deenergization all the time, and electric heater is no longer heating all the time.Even there is anhydrous situation in solar water container or the insulating pot,, thereby can not undermine as the heat generating components 12 of the electric heating body 1 of electric heater and Qi Nei and the thermostat 3 self that automatically resets because the thermostat 3 that automatically resets can not reset behind deenergization.If make state before electric heater returns to heating, as long as pull out attaching plug artificially, make heater element 4 dead electricity and stop heating, thereby it is extensive to can automatically reset temperature spot that the thermostat 3 that automatically resets is returned again.Entered the operating state that automatically resets again behind the last attaching plug to be inserted.As from the foregoing, the automatically reset extensive position temperature spot of thermostat 3 is controlled by the resistance of heater element 4 and watt level.
Claims (10)
1, a kind of electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method, the temperature-sensitive pipe (2) that it comprises electric heating body (1), connect with electric heating body (1) and place the thermostat that automatically resets (3) in the temperature-sensitive pipe (2) is characterized in that the described thermostat that automatically resets (3) also includes a heater element (4).
2, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 1, it is characterized in that described heater element (4) is combined on the wall body of the thermostat that automatically resets (3), a pair of pin (41) of heater element (4) is connected in parallel with lead-in wire (31) formation of thermostat (3) that automatically reset.
3, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 1 and 2 is characterized in that described heater element (4) is a thick-film resistor.
4, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 1 and 2 is characterized in that described heater element (4) is constant temperature heating sheet.
5, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 4 is characterized in that described constant temperature heating sheet is positive temperature coefficient thermistor (PTC).
6, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 1 and 2 is characterized in that being in series with a limit warm protector (5) on the lead-in wire (31) of the described thermostat that automatically resets (3).
7, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 1 and 2 is characterized in that the outer heatproof insulating sleeve (7) that is arranged with of the described thermostat that automatically resets (3).
8, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 1, the connection that it is characterized in that described temperature-sensitive pipe (2) and electric heating body 1 is any one in direct contact and connection or the indirect connection.
9, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 8 is characterized in that described direct contact and connection is that the outer wall of temperature-sensitive pipe (2) one end ends and electric heating body (1) fits.
10, the electric heating tube that has automatic temperature-adjusting control and prevent dry combustion method according to claim 8, it is characterized in that described indirect connection on electric heating body (1), to be installed with a heat conduction support (6), and an end end of temperature-sensitive pipe (2) is fixed on the heat conduction support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100197293A CN100466866C (en) | 2007-02-05 | 2007-02-05 | Electric heating tube with automatic temperature control and preventing dry burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100197293A CN100466866C (en) | 2007-02-05 | 2007-02-05 | Electric heating tube with automatic temperature control and preventing dry burning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101014219A true CN101014219A (en) | 2007-08-08 |
| CN100466866C CN100466866C (en) | 2009-03-04 |
Family
ID=38701445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100197293A Expired - Fee Related CN100466866C (en) | 2007-02-05 | 2007-02-05 | Electric heating tube with automatic temperature control and preventing dry burning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100466866C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683190A (en) * | 2012-08-31 | 2014-03-26 | 宁波新乐生活电器有限公司 | Dry burning prevention protection circuit of liquid electric-heating appliance as well as liquid evaporation pan and electric iron |
| CN103945584A (en) * | 2014-04-30 | 2014-07-23 | 江阴滨江医疗设备有限公司 | Heating device for sterilizer |
| CN107426835A (en) * | 2015-12-18 | 2017-12-01 | E.G.O.电气设备制造股份有限公司 | Heater |
| EP3869118A1 (en) | 2020-02-24 | 2021-08-25 | Vaillant GmbH | Electric water heater |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213502Y (en) * | 1994-10-11 | 1995-11-29 | 淄博多星电器总厂 | Electric kettle with protection of no water burning |
| CN2224370Y (en) * | 1995-05-10 | 1996-04-10 | 尹维平 | Fully-automatic electric water-boiling utensil |
| CN2363236Y (en) * | 1998-10-25 | 2000-02-09 | 珠海永隆集团公司 | Heater for drinking-water machine with function of preventing water from boiling out |
| CN2769750Y (en) * | 2005-03-03 | 2006-04-05 | 秦爱祥 | Drinker heating tank |
| CN201004719Y (en) * | 2007-02-05 | 2008-01-09 | 常熟市新力电子器件厂 | Electric heating tube with automatic temperature control and burning prevention |
-
2007
- 2007-02-05 CN CNB2007100197293A patent/CN100466866C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683190A (en) * | 2012-08-31 | 2014-03-26 | 宁波新乐生活电器有限公司 | Dry burning prevention protection circuit of liquid electric-heating appliance as well as liquid evaporation pan and electric iron |
| CN103683190B (en) * | 2012-08-31 | 2018-08-03 | 宁波新乐控股集团有限公司 | The anti-dry protection circuit and liquid vaporizing pot and electric iron of a kind of liquid electric heater tool |
| CN103945584A (en) * | 2014-04-30 | 2014-07-23 | 江阴滨江医疗设备有限公司 | Heating device for sterilizer |
| CN107426835A (en) * | 2015-12-18 | 2017-12-01 | E.G.O.电气设备制造股份有限公司 | Heater |
| EP3869118A1 (en) | 2020-02-24 | 2021-08-25 | Vaillant GmbH | Electric water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100466866C (en) | 2009-03-04 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20140205 |