CN203249390U - Water heater preventing dry heating - Google Patents
Water heater preventing dry heating Download PDFInfo
- Publication number
- CN203249390U CN203249390U CN 201320189489 CN201320189489U CN203249390U CN 203249390 U CN203249390 U CN 203249390U CN 201320189489 CN201320189489 CN 201320189489 CN 201320189489 U CN201320189489 U CN 201320189489U CN 203249390 U CN203249390 U CN 203249390U
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- water level
- switch
- switches
- water heater
- electric heating
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- Expired - Fee Related
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Abstract
The utility model relates to a water heater preventing dry heating. The water heater comprises an outer shell (1), a power source connector (2), a water tank (3), two float switches (4), an electric heating pipe (5), a circuit (6) and an alarming device (7), wherein the circuit is used for judging the states of the two float switches, the two float switches comprise a high-water-level float switch (41) and a low-water-level float switch (42), the two float switches (4) are both installed on the water tank (3), the electric heating pipe (5) is installed inside the water tank (3), and under the condition that the two float switches (4) are powered on, heat is conducted. Directing at the risk that an electric water heater conducts heating easily in a dry mode, according to the water heater preventing dry heating, the technology that the two float switches are used for avoiding dry heating of the electric heating pipe is provided, more importantly, the technology that the contradiction between the states of the two float switches early warns that one of the two float switches is out of work is provided, and the risks of equipment damage and human body injuries due to the electric heating pipe of the water heater are completely avoided.
Description
Technical field
The utility model relates to the electric-heating technology field of water, relates in particular to a kind of water heater of anti-dry.
Background technology
Consider that from the angle in safety and service life the danger of the water heater maximum of electricity consumption is exactly dry combustion method.Dry combustion method is damage equipment then gently, but heavy then fire hazard and the personnel that cause injure.Chinese utility model patent 201120039913.6 and 200920313815.X have announced the anti-dry burning device of a switch of a kind of use.Consider the risk that a switch may lose efficacy, Chinese patent 200920119083.1 has been announced the technology of " two-stage dry-heating preventing " of a kind of temperature control and switch protection.Particularly Chinese patent 200720149269.1, and the inventor has not only analyzed the reason that a switch can not thoroughly not avoided dry combustion method, also analyzed the common weak point with the temperature-sensitive element anti-dry, are exactly that reflection is slow, poor reliability.In this Chinese patent, the inventor has proposed to improve the response speed of anti-dry burning device and the technology of reliability with cubical expansion formula temperature controller.But no matter the response speed of cubical expansion formula temperature controller how soon, and it all is the response action that will just can make protectiveness after dry combustion method produces high temperature, can not definitely prevent the generation of dry combustion method phenomenon.
Summary of the invention
The utility model provides a kind of water heater of anti-dry, and it comprises following a few part:
Circuit and the warning device of shell, power connection, water tank, two switches, electric heating tube, two switch states of judgement;
Its housing is isolated from the outside whole device and comes, and externally guarantees the safety of the person and miscellaneous equipment, internally fixes and protect the safety of the parts of water heater;
Power connection is used for introducing the electric power of water heater need of work, can be binding post or plug;
Water tank stores and holds water to be heated and that heating;
Two switches comprise high water level switch and low water level switch, and two switches are installed on the water tank, respectively perception and report high water level and low water level two states;
Electric heating tube is installed in the water tank, in the situation that two switches all lead to, and the electric heating tube heating power;
Send early warning signal by warning device in the circuit of judging two the switch states situation that switch low water level is disconnected in that the switch of high water level is logical;
Warning device is comprised of high water level switch indication light diode and two light emitting diodes of low water level switch indication light diode, can also comprise power supply status indication light diode.The early warning signal that sends according to the circuit of judging two switch states, when only having low water level switch indication light diode not work, the user and or the maintenance of equipment personnel can judge that the high water level switch has had fault.
During use, the power connection energising, power supply status indication light diode is at first luminous, and the expression power supply is normal.Only have high water level switch and low water level switch to detect simultaneously water, relay gets electric adhesive, the electric heating tube heating power.Along with the reduction of water level, at first be that the high water level switch can't detect water, relay electric-loss disconnects, and the electric heating tube stopped heating prevents the electric heating tube dry combustion method.If the high water level switch lost efficacy because of long-term work, relay electric-loss is disconnected, electric heating tube works on, water level in the water tank also can continue to descend, until the low water level switch detects lack of water, relay (43) dead electricity disconnects, and electric heating tube (5) stopped heating is avoided dry combustion method.At this moment, the circuit of judging two switch states is logical according to the high water level switch and abnormality that the low water level switch is disconnected sends early warning signal, warning device notifies the relevant personnel to overhaul the high water level switch according to early warning signal with sound, light and the signal of telecommunication again, in time recover the two-way safeguarding function of two switches, absolutely prevent dry combustion method.
The water heater of anti-dry of the present utility model is for the risk of the easy dry combustion method of water heater of electricity consumption, not only proposed to avoid with two switches the technology of electric heating tube dry combustion method, the more important thing is the method that has proposed to have had according to two switches of contradiction early warning of two switch states an inefficacy, thoroughly avoided equipment that the heating tube of the electricity consumption of water heater brings easily and the risk of damage to person.This technology especially is fit to various electrically heated water evaporimeters, and especially industry and civilian condensation generator can be avoided dry combustion method and the various accidents that cause.
Description of drawings
The schematic diagram of the water heater of Fig. 1 anti-dry of the present utility model
The fundamental diagram of Fig. 2 embodiment one
The fundamental diagram of Fig. 3 embodiment two
1 shell
2 power connections
3 water tanks
4 two switches
41 high water level switches
42 low water level switches
43 relays
5 electric heating tubes
6 judge the circuit of two switch states
7 warning devices
711 high water level signal current-limiting resistances
712 high water level switch indication light diodes
721 low water level signal current-limiting resistances
722 low water level switch indication light diodes
731 power supply signal current-limiting resistances
732 power supply status indication light diodes
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one
The utility model proposes a kind of water heater of anti-dry, it comprises following a few part:
Its housing 1 is isolated from the outside whole device and comes, and externally guarantees the safety of the person and miscellaneous equipment, internally fixes and protect the safety of the parts of water heater;
Two switches 4 comprise that high water level switch 41 and 42, two switches of low water level switch are installed on the water tank 3, respectively perception and report high water level and low water level two states;
The circuit 6 of judging two switch states sends early warning signal by warning device 7 in the disconnected situation of the logical and low water level switch of high water level switch 41 42;
Concrete circuit diagram is seen Fig. 2;
After power connection 2 had electricity, through current-limiting resistance 731, power supply status indication light diode 732 was at first luminous, and the expression power supply is normal.Along with the rising of water level, low water level switch 42 and high water level switch 41 are successively connected.Then, through high water level signal current-limiting resistance 711 and low water level signal current-limiting resistance 721, high water level switch indication light diode 712 and low water level switch indication light diode 722 are simultaneously luminous, represent that two switches all connect.Simultaneously, relay 43 gets electric adhesive, and electric current produces heats by electric heating tube 5, and the water heater of anti-dry is started working.Under normal circumstances, along with the reduction of water level, the switch 41 of high water level disconnects first.At this moment, high water level switch indication light diode 712 and low water level switch indication light diode 722 stop luminous simultaneously, and relay 43 dead electricity disconnect, and do not have electric current to pass through in the electric heating tube 5, and heating stops, can dry combustion method.Under deviant circumstance, high water level switch 41 is because contact weld together, remains on-state, even water level descends, high water level switch 41 also can not disconnect the power supply of relay 43, and electric heating tube 5 will continuous heating.But along with the continuation of water level descends, low water level switch 42 can disconnect the power supply of relay 43, cuts off the electric current of electric heating tube 5, makes electric heating tube 5 stopped heatings, avoids the generation of dry combustion method accident.At this moment, through high water level signal current-limiting resistance 711, high water level switch indication light diode 712 is bright and low water level switch indication light diode 722 does not work.When only having low water level switch indication light diode 722 not work in three light emitting diodes of warning device 7, the welding of contact of this explanation high water level switch 41 has together lost sensed water level and the function that prevents dry combustion method, needs to change.
Embodiment two
A kind of water heater of anti-dry, it comprises following a few part:
Its housing 1 is isolated from the outside whole device and comes, and externally guarantees the safety of the person and miscellaneous equipment, internally fixes and protect the safety of the parts of water heater;
Two switches 4 comprise that high water level switch 41 and 42, two switches of low water level switch are installed on the water tank 3, respectively perception and report high water level and low water level two states;
Send early warning signal by warning device 7 in the disconnected situation of the switch 42 of the circuit 6 of judging two switch states and low water level logical at the switch 41 of high water level;
Its circuit diagram is seen Fig. 3;
After power connection 2 had electricity, through current-limiting resistance 731, power supply status indication light diode 732 was at first luminous, and the expression power supply is normal.Along with the rising of water level, low water level switch 42 and high water level switch 41 are successively connected, and through high water level signal current-limiting resistance 711, high water level switch indication light diode 712 is luminous, and relay 43 gets electric adhesive.Then, through low water level signal current-limiting resistance 721, the luminous and electric current of low water level switch indication light diode 722 occurs simultaneously by electric heating tube 5, and the water heater of anti-dry is started working.Under normal circumstances, along with the reduction of water level, high water level switch 41 disconnects first.At this moment, high water level switch indication light diode 712 stops luminous, and relay 43 dead electricity disconnect, and low water level switch indication light diode 722 stops luminous, does not have electric current to pass through in the electric heating tube 5, and heating stops, can dry combustion method.Under deviant circumstance, high water level switch 41 is because contact weld together, remains on-state, even water level descends, high water level switch 41 also can not disconnect the power supply of block system relay 43, and electric heating tube 5 will continuous heating.But along with the continuation of water level descends, low water level switch 42 can disconnect the power supply of relay 43, cuts off the electric current of electric heating tube 5, makes electric heating tube 5 stopped heatings, avoids the generation of dry combustion method accident.At this moment, when only having low water level switch indication light diode 722 not work in three light emitting diodes of warning device 7, the welding of contact of this explanation high water level switch 41 has together lost sensed water level and the function that prevents dry combustion method, needs to change.Warning device 7 can send early warning signal immediately, and early warning signal can be acoustical signal, optical signal or the signal of telecommunication, thereby makes the anti-dry water heater recover the function of dual fail-safe, thoroughly avoids the generation of dry combustion method accident.
Claims (1)
1. the water heater of an anti-dry is characterized in that comprising following a few part:
Circuit (6) and the warning device (7) of shell (1), power connection (2), water tank (3), two switches (4), electric heating tube (5), two switch states of judgement;
Two switches (4) comprise high water level switch (41) and low water level switch (42), and two switches are installed on the water tank (3);
Electric heating tube (5) is installed in the water tank (3), in the situation that two switches (4) all lead to, and heating power;
Send signal to warning device (7) in the circuit (6) of judging two the switch states situation that switch (42) low water level is disconnected in that the switch (41) of high water level is logical;
Warning device (7) is comprised of high water level switch indication light diode (712) and (722) two light emitting diodes of low water level switch indication light diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189489 CN203249390U (en) | 2013-04-16 | 2013-04-16 | Water heater preventing dry heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189489 CN203249390U (en) | 2013-04-16 | 2013-04-16 | Water heater preventing dry heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203249390U true CN203249390U (en) | 2013-10-23 |
Family
ID=49375829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320189489 Expired - Fee Related CN203249390U (en) | 2013-04-16 | 2013-04-16 | Water heater preventing dry heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203249390U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175305A (en) * | 2013-04-16 | 2013-06-26 | 杨肇通 | Anti-dry burning water heater |
| CN105444421A (en) * | 2015-12-08 | 2016-03-30 | 芜湖恒美电热器具有限公司 | Dry-burning-preventing alarm PTC electric water heater |
| CN107036683A (en) * | 2016-11-21 | 2017-08-11 | 珠海格力电器股份有限公司 | A kind of water storage tank body fluid position detecting system and hot tank |
-
2013
- 2013-04-16 CN CN 201320189489 patent/CN203249390U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175305A (en) * | 2013-04-16 | 2013-06-26 | 杨肇通 | Anti-dry burning water heater |
| CN103175305B (en) * | 2013-04-16 | 2016-04-20 | 杨肇通 | A kind of water heater of anti-dry |
| CN105444421A (en) * | 2015-12-08 | 2016-03-30 | 芜湖恒美电热器具有限公司 | Dry-burning-preventing alarm PTC electric water heater |
| CN107036683A (en) * | 2016-11-21 | 2017-08-11 | 珠海格力电器股份有限公司 | A kind of water storage tank body fluid position detecting system and hot tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170418 Address after: Shanghai City, Jinshan District road 201500 No. 188 1 zhujingzhen in Room 202 Patentee after: Shanghai LED temperature control technology Co., Ltd. Address before: 201804 Jiading District Cao An Road, Tongji University, School of automotive engineering, B306 Patentee before: Yang Zhaotong |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20160416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |