CN201403209Y - Safety protecting equipment of electric heating membrane heater - Google Patents
Safety protecting equipment of electric heating membrane heater Download PDFInfo
- Publication number
- CN201403209Y CN201403209Y CN2009201185620U CN200920118562U CN201403209Y CN 201403209 Y CN201403209 Y CN 201403209Y CN 2009201185620 U CN2009201185620 U CN 2009201185620U CN 200920118562 U CN200920118562 U CN 200920118562U CN 201403209 Y CN201403209 Y CN 201403209Y
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- CN
- China
- Prior art keywords
- electric heating
- heating membrane
- lamina membranacea
- ground wire
- phase line
- 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
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- Control Of Resistance Heating (AREA)
- Central Heating Systems (AREA)
Abstract
A safety protecting equipment of electric heating membrane heater comprises an electric heating membrane plate, phase wire and ground wire power ends arranged on the electric heating membrane plate and a negative temperature factor sensor arranged on the electric heating membrane plate, and is characterized in that the phase wire power end on the electric heating membrane plate and the ground wirepower end arranged on the electric heating membrane plate are symmetrically provided with bimetallic-strip temperature controllers. The design combines the electronic circuit temperature control with a negative temperature factor heat-sensitive resistance and the mechanical bimetallic strip kick-type temperature controllers to form a temperature control device with three-grade safety (at leasttwo-grade) protection, which enables the safety protecting equipment of electric heating membrane heater to accord with requirements of national security standards, guarantees safe and reliable use ofelectric heating membrane heaters, and develops spreading road for the electric heating membrane heaters in household electric heater market. The safety protecting equipment of electric heating membrane heater grounds for improving electric heating efficiency and saving energy.
Description
Technical field
The utility model relates to a kind of safety guard of electric heater, particularly about the Heating protector of Electric radiant Heating Film.
Background technology
Because the thermal conversion speed of Electric radiant Heating Film is fast; heat energy transformation efficiency height; thermal inertia is few; compare with traditional electrothermal tube; the thermal conversion speed of Electric radiant Heating Film is 20 times of electrothermal tube electrothermal calefactive rate; the heat efficiency can reach 98%; the use of Electric radiant Heating Film has remarkable benefit on energy savings; become the ideal product that replaces resistance wire or electrothermal tube; but the electrothermal film heater of selling on the market; in protection safe in utilization, still there is following defective; it adopts the thermistor of negative temperature coefficient; be that NTC carries out safeguard protection; because the thermistor temperature sensor of negative temperature coefficient is wanted the electronic control circuit of supporting complexity; wherein bound cpu control circuit and program development software; cause the security appliance accident because the protection inefficacy takes place electronic circuit easily; only depend on single NTC system protection not meet the nation's security standard-required; nation's security standard-required household electronic products must have dual safeguard measure; so that just in case when protective device lost efficacy, second safety guard of Cun Zaiing guarantees that the user's is safe in utilization in addition.
Adopting the Kick type temperature controller that electric tube heater is carried out temperature control is the effective safety guard of a kind of routine; the memory type bimetal leaf of the Kick type temperature controller of selling on the market because of bimetal leaf by the metal shell complete closed; its operating temperature is subjected to the restriction of metal shell conduction of velocity; prolonged the response time of bimetal leaf widely to variations in temperature; cause the Electric radiant Heating Film overtemperature protection to lose efficacy easily; therefore according to the national safety standard requirement; improved Kick type temperature controller must be increased, to reach the standard-required that electrothermal film heater has dual security protection on the thermistor protection system basis of negative temperature coefficient.
Summary of the invention
The technical problems to be solved in the utility model is the defective at the electrothermal film heater safeguard protection, and the safety guard with two or more is provided, and every kind of safety guard works alone separately, and common monitor temperature state is guaranteed safe in utilization.
The safety guard of electrothermal film heater; comprise the electric heating lamina membranacea, be located at phase line and the ground wire power end on the Electric radiant Heating Film lamina membranacea and be located at negative temperature coefficient transducer on the electric heating lamina membranacea, it is characterized in that being symmetrical arranged the bimetal leaf temperature controller at phase line power end on the electric heating lamina membranacea and the ground wire power end on the electric heating lamina membranacea.
Described bimetal leaf temperature controller is close to exposed bimetal leaf on the electric heating lamina membranacea by one side, be located at the insulating rod above the exposed bimetal leaf, one end is fixed on phase line or the ground wire paster on the electric heating lamina membranacea, and the other end is formed with phase line or the movable movable contact spring that contacts of ground wire static contact.
Described insulating rod is the insulation porcelain rod, one end and exposed bimetal leaf edge-perpendicular, and the other end withstands on the centre below phase line contact or the ground wire contact.
Described bimetal leaf temperature controller is the bimetal strip thermostat that works alone separately of left and right symmetry.
The negative temperature coefficient transducer comprises that 2 are located at the middle thermistor of electric heating lamina membranacea one end side by side, and thermistor is introduced the input of microprocessor CPU by conducting strip.
The electronic circuit temperature control that above-mentioned design will have negative tempperature coefficient thermistor combines with mechanical bimetal leaf Kick type temperature controller; form the rarest 2 grades; the temperature control equipment that the protection of 3 level securities is generally arranged; the safety guard of electrothermal film heater is reached meet the national safety standard requirement; guarantee that electrothermal film heater is safe and reliable; be in the wide road of pin horizontal sliding in the electric heater for electrothermal film heater, raising electrothermal efficiency, energy savings are layed foundation.
Description of drawings
Fig. 1 is a partly overall structure schematic diagram of electrothermal film heater temperature controller tool.
Fig. 2 is a partly overall structure stereogram of electrothermal film heater temperature controller tool.
Fig. 3 is for being electrically connected control chart.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described.
Temperature control safety guard of the present utility model comprises that negative tempperature coefficient thermistor is the NTC temperature controller of temperature sensor and the bimetal leaf temperature controller of Kick type.
NTC temperature controller shown in Figure 1 partly comprises 2 and come thermistor 12 in the middle of Electric radiant Heating Film plate 1 upper end, and wherein left thermistor is 12a, and right thermistor is 12b, and the rear end of thermistor 12 be left or right thermistor paster 10a or 10b.Thermistor 12 is introduced the microprocessor CPU input by conducting strip 11a or 11b, thermistor 10a or 10b are a kind of negative temperature coefficient transducers, its resistance value descends with the rising of temperature, therefore when the variations in temperature of electric heating lamina membranacea 1, the value that is close to the thermistor of electric heating lamina membranacea 1 a middle end is also followed variation, and this change in electric is by conducting strip 11a and 11b input microprocessor CPU control electric heating lamina membranacea working temperature.
Kick type temperature controller is the bimetal leaf temperature controller, bimetal strip thermostat of the present utility model is divided into the bimetallic temperature controller that left and right two symmetrical groups works alone separately, wherein Zuo Ce bimetal leaf 2a is close to the power supply phase line input of electric heating lamina membranacea 1, phase line movable contact spring 4a is arranged, phase line static contact 7a, and on phase line moving contact 6a and phase line fixed contact 5a, the bimetal leaf 2b that is located at the right side is close to the power ground input of electric heating lamina membranacea 1, ground wire movable contact spring 4b is arranged, ground wire static contact 7b, and on ground wire moving contact 6b and ground wire fixed contact 5b.The bimetal leaf 2a or the 2b that are symmetrical set, insulation porcelain rod 3a or 3b, phase line contact 4a or ground wire movable contact spring 4b, phase line static contact 7a or ground wire static contact 7b.One end of movable contact spring 4 is located at the middle upper end of electric heating lamina membranacea 1, one end of movable contact spring 4 is converted into one to getting out of a predicament or an embarrassing situation, its end is fixed on the power supply contact 9 by movable contact spring fixing point 8, wherein phase line power supply fixing point 8a connects phase line movable contact spring 4a, ground wire power supply fixing point 8b connects ground wire movable contact spring 4b, upwards raise and be the moving contact 6 of movable contact spring below partly terminal, wherein the moving contact of phase line movable contact spring 4a is 6a, and the moving contact of ground wire movable contact spring 4b is 6b.The centre of movable contact spring 4 stands vertically in 3 supports of the insulation porcelain at bimetal leaf 2 edges rod by one, wherein is located to be phase line insulation porcelain rod 3a phase line movable contact spring 4a under, and being located at ground wire movable contact spring 4b under is the excellent 3b of ground wire insulation porcelain.Be located at and be static contact 7 under the moving contact 6 of movable contact spring 4, that wherein contact with phase line movable contact spring 4a activity is phase line static contact 7a, that contact with ground wire movable contact spring 4b activity is ground wire static contact 7b, and the end of phase line static contact 7a or ground wire static contact 7b establishes phase line fixed contact 5a or ground wire fixed contact 5b contacts with the moving contact 5a of phase line movable contact spring 4a end or the moving contact 5b activity of ground wire movable contact spring 4b end respectively.
Abovely sketch Control work process of the present utility model in conjunction with Fig. 1 and Fig. 3, power supply input shown in Figure 1 inserts by circuit board 15, also can directly insert.Circuit board 15 is provided with the operating current circuit for micro processor 18; comprise DC power supply 16 confession CPU work such as rectifying and wave-filtering voltage stabilizing; the NTC temperature controller is located at the centre position 13 of establishing on the electric heating lamina membranacea; the signal of telecommunication input CPU that NTC produces in the variations in temperature of electric heating lamina membranacea 1; controllable silicon 19 or relay 17 work that CPU is relevant with the heating of electric heating lamina membranacea according to the control program software control of design; make electric heating lamina membranacea 1 be in CPU control operate as normal down, this is normal one-level safeguard protection.When CPU and peripheral circuit thereof break down; make electric heating lamina membranacea 1 temperature not be subjected to the control of CPU and when rising to high temperature; for example more than 120 ℃; when reaching the temperature of bimetal leaf thermal deformation; the thermal deformation of bimetal leaf is beated and is made movable contact spring 4 actions; thereby cut off the power supply of electric heating lamina membranacea; about the bimetallic temperature controller work alone separately is set; as long as wherein arbitrary bimetallic temperature controller action just produces the secondary safeguard protection; about two bimetallic temperature controllers move simultaneously and just become three grades safeguard protection; guarantee that the Electric radiant Heating Film heating has the dual security protection requirement, reaches the requirement of national safety standard.
Claims (5)
1, the safety guard of electrothermal film heater; comprise the electric heating lamina membranacea, be located at phase line and the ground wire power end on the Electric radiant Heating Film lamina membranacea and be located at negative temperature coefficient transducer on the electric heating lamina membranacea, it is characterized in that being symmetrical arranged the bimetal leaf temperature controller at phase line power end on the electric heating lamina membranacea and the ground wire power end on the electric heating lamina membranacea.
2, the safety guard of electrothermal film heater according to claim 1; it is characterized in that described bimetal leaf temperature controller is close to electric heating lamina membranacea (1) by one side and goes up exposed bimetal leaf (2); be located at the insulating rod (3) above the exposed bimetal leaf (2); one end is fixed on phase line or the ground wire paster (9) on the electric heating lamina membranacea (1), and the other end is formed with phase line or the movable movable contact spring (4) that contacts of ground wire static contact (7).
3, the safety guard of electrothermal film heater according to claim 2; it is characterized in that described insulating rod (3) is the insulation porcelain rod; one end and exposed bimetal leaf (2) edge-perpendicular, the other end withstand on the centre below phase line contact (4a) or the ground wire contact (4b).
4, the safety guard of electrothermal film heater according to claim 1 and 2 is characterized in that described bimetal leaf temperature controller is the bimetal strip thermostat that works alone separately of left and right symmetry.
5, the safety guard of electrothermal film heater according to claim 1; it is characterized in that the negative temperature coefficient transducer comprises that 2 are located at the middle thermistor (12) of electric heating lamina membranacea (1) one end side by side, thermistor (12) is introduced the input of microprocessor CPU by conducting strip (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201185620U CN201403209Y (en) | 2009-04-24 | 2009-04-24 | Safety protecting equipment of electric heating membrane heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201185620U CN201403209Y (en) | 2009-04-24 | 2009-04-24 | Safety protecting equipment of electric heating membrane heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201403209Y true CN201403209Y (en) | 2010-02-10 |
Family
ID=41663008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201185620U Expired - Fee Related CN201403209Y (en) | 2009-04-24 | 2009-04-24 | Safety protecting equipment of electric heating membrane heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201403209Y (en) |
-
2009
- 2009-04-24 CN CN2009201185620U patent/CN201403209Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100210 Termination date: 20140424 |