CN2165381Y - Electric water heater with electric leakage and overtemp. controller - Google Patents
Electric water heater with electric leakage and overtemp. controller Download PDFInfo
- Publication number
- CN2165381Y CN2165381Y CN 93221365 CN93221365U CN2165381Y CN 2165381 Y CN2165381 Y CN 2165381Y CN 93221365 CN93221365 CN 93221365 CN 93221365 U CN93221365 U CN 93221365U CN 2165381 Y CN2165381 Y CN 2165381Y
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- electric leakage
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- temperature
- wave band
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Abstract
The utility model relates to an electric water heater provided with a control device for electric leakage and over temperature, which comprises a magnetic reed switch, an adjustment device for a wave band, a heating device, a zero phase ratio flow device, a comparator, a switching circuit for the quantity of the electric leakage, a temperature sensing switch and a temperature alarm circuit, wherein, the magnetic reed switch is switched on after entering water and is detected and controlled by a main circuit, and abnormal salient waves are absorbed by a salient wave absorber. A green lamp is light under the condition of no electric leakage and no over temperature for presenting normality, and an electromagnetic band switch can be adjusted to make the heating device work normally. When the electric leakage happens, the comparator and the switching circuit for the quantity of the electric leakage together move to enhance the alarm, If the over temperature happens, the alarm is raised by the temperature alarm circuit to prevent the electric leakage and the over temperature of the electric water heater.
Description
The utility model belongs to a kind of electric heater with safety control, is meant a kind of electric heater with electric leakage overtemperture control device especially.
The effect of general electric heater is nothing more than being to utilize the electric energy conversion thermal energy, and to the water heating, but the water after the heating is easy to produce steam, is to be under the high environment of humidity height, electric conductivity so well imagine general electric heater.With the aqueous vapor is media, the electricity of supplying with the electric heater heating will leak outside by this, and the path of following aqueous vapor (globule) and conductive body is disseminated and is come, in a single day the user touches the electricity that is leaked, and gently then human body is injured, heavy then hinder its life, and this phenomenon that jeopardizes life safety, of common occurrence, real is a big defective of electric heater, and present electric heater still can't solve this serious electric leakage problem effectively.
In addition, because electric heater constantly heating rises water temperature, to reach shower or to wash required temperature, if the heat that electric heater produced makes water temperature constantly rise, if in time do not check, too high water temperature then can be scalded the user, so user of present electric heater, when using electric heater, must be worried and meticulous, lest water temperature generation ANOMALOUS VARIATIONS.But electric heater still can't be eliminated the user to the unrestricted uneasiness and the puzzlement of rising and being caused of water temperature at present.So, cause the user to clasp distrust always to commonly using electric heater based on disappearances such as above-mentioned electric leakage and overtemperatures, be in fear of careless manipulation, cause electric leakage and overtemperature, and injure human body.
Because the defective of the aforementioned electric heater of commonly seeing, this case applicant designs this case it " electric heater with electric leakage overtemperture control device ".
The main purpose of this case is to provide an electric heater with electric leakage control device, in case the damage that the leak-stopping electricity is caused.
The secondary objective of this case is to provide an electric heater with overtemperture control device, injures human body to avoid the water temperature abnormal ascending.
The utlity model has the electric heater of electric leakage overtemperture control device, comprising:
One magnetic reed switch is connected in power supply activity, as current by the time just be conducting state, make power supply pass through main circuit;
One adjusts the wave band device, has an electromagnetic wave band switch, the input of this switch is connected in power supply, by the suction magnetic of a solenoid whether and output is articulated in heating element, and, decide the open close of power supply, mat one band switch changes output contact in addition, and the size of decision power output, and then change the degree that heating element heats, and mat wave band display shows it;
One heating element is accepted the solenoid power supply that main circuit board is controlled the electromagnetic wave band switch, and the electromagnetic wave band output switching terminal is connected in heating element, and when its contact conducting, heating element is heated, and water temperature is risen;
One zero phase current transformers in order to the size of perception electrical leakage quantity, and are converted to the size of electric weight;
One comparator, one end are connected in zero phase current transformer, and the other end then is a fixed reference potential, and when the electric weight that is reacted when zero phase current transformer was the non-normal working value, comparator was sent an electric leakage signal;
One electrical leakage quantity on-off circuit behind the signal of accepting to leak electricity, makes an electric leakage gauge tap turn to another contact conducting, and sends the electric leakage caution; Make solenoid not have operating voltage, and the electromagnetic wave band Switching Power Supply can't connect, and make heating element can't obtain power supply;
One temperature sensing switch, upper and lower in a certain temperature, the action of can produce unlatching, closing; It is also connected with a Thermal Cutoffs; And
One temperature warning circuit, by the action of temperature sensing switch, make the corresponding decision of this temperature warning circuit whether make solenoid obtain operating voltage, simultaneously, the electromagnetic wave band switch has or not power turn-on, thereby correspondingly makes heating element whether obtain power supply and send temperature caution.
The utility model can prevent that electric heater from causing damage because of electric leakage, also can avoid can guaranteeing the safe handling of electric heater effectively because of the water temperature abnormal ascending injures human body.
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
Description of drawings:
Fig. 1 is the process block diagram of the utility model circuit.
Fig. 2 is an enforcement circuit diagram of the present utility model.
As shown in the figure, surge absorber (TVR) 22 when the abnormal voltage surging produces, can absorb unusual surging automatically.
Adjust wave band device 3, comprise an electromagnetic wave band switch 31 and a wave band display 32, wherein electromagnetic wave band switch 31 comprises a solenoid (LOAD) 311 and band switch 312, when electric heater had overtemperature or electric leakage situation, solenoid (LOAD) 311 can't obtain operating voltage, so do not inhale magnetic, make electromagnetic wave band switch 31 can't connect power supply, because of electromagnetic wave band switch 31 outputs articulate heating element 4,, and can't heat so heating element 4 can't obtain voltage.Otherwise if do not have electric leakage or overtemperature situation, solenoid 311 is inhaled magnetic, and electromagnetic wave band switch 31 is connected power supply simultaneously, so heating element 4 obtains voltage, so the work of can heating.And the degree of heater 4 heating can change connecting point positions by stirring band switch 312, and make its power output change size, and then change the degree of heat of heating element 4; And wave band display 32 shows the wave band number of heating at that time with the degree of electric heater 4 heating with digital form.
Zero phase current transformer (ZCT) 5 in order to the size of induction leakage current, and is converted to the size of electric weight.
Electrical leakage quantity on-off circuit 7, comprise a silicon controlled rectifier (SCR) (SCR) 71, when leakage current during greater than 30mA, comparator 6 can be sent an electric leakage signal, and in 0.1 second, order electric leakage gauge tap (L2) 72 is inhaled magnetic (L2 SW switches simultaneously), makes red light (LED2) 74 bright, and sends the electric leakage caution; Simultaneously solenoid 311 can't obtain operating voltage, does not inhale magnetic, so electromagnetic wave band switch 31 non-transformers are connected, and no-voltage exports, and makes heating element 4 work of can't heating.If will leak electricity reparation, pressing answer button 73 this moment will involution.Because of replying button 73 silicon controlled rectifier (SCR) 71 short circuits are ended, and then make electric leakage gauge tap 72 not inhale magnetic.
Temperature sensing switch (TIC) 8 is upper and lower in a certain temperature, understands corresponding generation open circuit, closing motion, and connects with a Thermal Cutoffs 81.Because in the time of can not carrying out the overtemperture control function when 8 damages of temperature sensing switch, heating element 4 can constantly be heated, at this moment, established temperature fuse 81 can melt down under certain specified temp automatically, makes solenoid 311 can't obtain operating voltage, do not inhale magnetic, thereby electromagnetic wave band switch 31 non-transformers are connected, and also no-voltage output is not so heating element 4 is worked.
Temperature warning circuit 9 when the upper and lower change of a certain temperature, makes the overtemperature relay (L1) 91 of temperature warning circuit 9 produce the action (L1 SW change) of not inhaling magnetic, inhaling magnetic by temperature sensing switch 8.And impel overtemperature relay (L1, L1 SW) 91 and amber light (LED3) 92 in the temperature warning circuit to move.When the L1 of overtemperature relay 91 SW switches, make amber light 92 bright and when sending the temperature caution, solenoid 311 is not inhaled magnetic, electromagnetic wave band switch 31 non-transformers are connected simultaneously, and no-voltage output, and heating element 4 is not worked, and represent that promptly temperature surpasses 85 ℃ this moment; This moment, 8 meetings of temperature sensing switch were opened a way, and the L1 SW of overtemperature relay 91 switches, and amber light 92 is bright.
Under the situation of not having electric leakage, electric leakage gauge tap 72 is not inhaled magnetic, when not having the overtemperature situation again, temperature sensing switch 8 is in the state of ON, main circuit is able to operate as normal, and solenoid (LOAD) 311 can obtain operating voltage and inhale magnetic, makes electromagnetic wave band switch 31 connect power supply, so heating element 4 can normally be heated, but user's mat is stirred band switch 312 and is obtained correct water temperature simultaneously.
For more cheer and bright 26S Proteasome Structure and Function of the present utility model, with the flow process of an embodiment circuit, details are as follows respectively:
After main power source 1 power supply, magnetic reed switch 2 water inlets, the action of mat pipe internal magnet makes it be the ON state, and circuit board consumed current amount is not more than 500mA, fuse 21 also is a normal condition, and surge absorber 21 runs into has surging then with its absorption, and this moment, power supply was again through the transformation rectification, for other element work required voltages, and carry out Detection ﹠ Controling by main circuit.
If during overtemperature, temperature sensing switch 8 is OFF, overtemperature relay 91 switches to the B2 contact, and amber light 92 is bright, is the temperature alert status.If no overtemperature, overtemperature relay 91 switches to the A2 contact, and solenoid 311 obtains operating voltages and inhales magnetic at this moment, makes electromagnetic wave band switch 31 connect power supplys, thereby heating element 4 is heated smoothly.
If leaky is arranged, electric leakage gauge tap SW 72 switches to the A1 contact, and red light 74 is bright, is the electric leakage alert status.If no leaky, the gauge tap SW72 that then leaks electricity switches to the B1 contact, makes solenoid 311 obtain operating voltage and inhales magnetic, and electromagnetic wave band switch 31 connection power supplys make heater 4 operate as normal simultaneously.
If no overtemperature or when not having leaky, green light 23 is bright, the monitoring of expression main circuit normally, so solenoid 311 obtains operating voltage and inhales magnetic, make electromagnetic wave band switch 31 connect power supply, make heating element 4 actions, and mat wave band display 32 shows the degree of electric heater heating at that time.
In addition, this case also has the maltilevel security measure except that the anomaly that overcomes the electric leakage of commonly using electric heater and overtemperature, now is described below respectively:
1, magnetic reed switch, when when water inlet, the mat current make magnetic reed switch be conducting state to the effect of pipe internal magnet, if do not intake or water pipe when stopping up, then can't conducting.
2, fuse is if circuit board current sinking amount greater than 500mA, can fuse with holding circuit automatically.
3, electric leakage gauge tap, if when electric leakage, the electric leakage gauge tap is inhaled magnetic, makes solenoid obtain operating voltage and does not inhale magnetic, makes the electromagnetic wave band switch can't form power turn-on, no-voltage output is not so heating element is worked.
4, temperature sensing switch when surpassing 85 ℃ of operating temperatures, can cause open circuit, and make the overtemperature relay not inhale magnetic, causes solenoid to obtain operating voltage and does not inhale magnetic, makes the electromagnetic wave band switch can't form power turn-on, and heating element is not worked.
5, Thermal Cutoffs, when unusual as if the temperature sensing switch, heater continues to heat to a certain specified temp, can melt down automatically, makes solenoid not inhale magnetic, and non-transformer output, makes heating element can't obtain voltage, and can't continue to heat.
6, electromagnetic wave band switch, its input connects power supply, and output articulates heating element, and the mat solenoid is connected with above-mentioned magnetic reed switch, fuse, electric leakage gauge tap, temperature sensing switch and Thermal Cutoffs formation, if solenoid is not inhaled magnetic, then power supply also can't conducting.
Content disclosed in the utility model, just preferred embodiment is a kind of, and Ju Bu change or modification and come from the technological thought of this case and be what these those skilled in the art were easy to know by inference such as all is not separated from the patent protection category of case.
Claims (7)
1, a kind of electric heater with electric leakage overtemperture control device is characterized in that comprising:
One magnetic reed switch is connected in power supply activity, as current by the time just be conducting state, make power supply pass through main circuit;
One adjusts the wave band device, has an electromagnetic wave band switch, the input of this switch is connected in power supply, by the suction magnetic of a solenoid whether and output is articulated in heating element, and, decide the open close of power supply, mat one band switch changes output contact in addition, and the size of decision power output, and then change the degree that heating element heats, and mat wave band display shows it;
One heating element is accepted the solenoid power supply that main circuit board is controlled the electromagnetic wave band switch, and the electromagnetic wave band output switching terminal is connected in heating element, and when its contact conducting, heating element is heated, and water temperature is risen;
One zero phase current transformers in order to the size of perception electrical leakage quantity, and are converted to the size of electric weight;
One comparator, one end are connected in zero phase current transformer, and the other end then is a fixed reference potential, and when the electric weight that is reacted when zero phase current transformer was the non-normal working value, comparator was sent an electric leakage signal;
One electrical leakage quantity on-off circuit behind the signal of accepting to leak electricity, makes an electric leakage gauge tap turn to another contact conducting, and sends the electric leakage caution; Make solenoid not have operating voltage, and the electromagnetic wave band Switching Power Supply can't connect, and make heating element can't obtain power supply;
One temperature sensing switch, upper and lower in a certain temperature, the action of can produce unlatching, closing; It is also connected with a Thermal Cutoffs; And
One temperature warning circuit, by the action of temperature sensing switch, make the corresponding decision of this temperature warning circuit whether make solenoid obtain operating voltage, simultaneously, the electromagnetic wave band switch has or not power turn-on, thereby correspondingly makes heating element whether obtain power supply and send temperature caution.
2, the electric heater with electric leakage overtemperture control device as claimed in claim 1, wherein magnetic reed switch mat discharge drives the pipe internal magnet, and whether controls the magnetic reed switch conducting by magnet.
3, the electric heater with electric leakage overtemperture control device as claimed in claim 1, wherein this electrical leakage quantity on-off circuit also comprises a silicon controlled rectifier (SCR), after accepting the electric leakage signal, makes this electric leakage gauge tap turn to another contact.
4, the electric heater with electric leakage overtemperture control device as claimed in claim 2 comprises that also one replys the two ends that button is located at silicon controlled rectifier (SCR), makes after electric leakage is repaired, and breaks away from alert status by this button to make circuit, and recovers normal.
5, the electric heater with electric leakage overtemperture control device as claimed in claim 1, wherein the temperature warning circuit also comprises an overtemperature relay, according to the conducting or the disconnection of temperature sensing switch, whether the corresponding control of overtemperature relay turns to another contact and sends the temperature caution.
6, the electric heater with electric leakage overtemperture control device as claimed in claim 1, wherein so-called caution are to be demonstration with bright lamp.
7, the electric heater with electric leakage overtemperture control device as claimed in claim 1, wherein magnetic reed switch, fuse, electric leakage gauge tap, temperature sensing switch, Thermal Cutoffs all are in series with solenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221365 CN2165381Y (en) | 1993-08-12 | 1993-08-12 | Electric water heater with electric leakage and overtemp. controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221365 CN2165381Y (en) | 1993-08-12 | 1993-08-12 | Electric water heater with electric leakage and overtemp. controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2165381Y true CN2165381Y (en) | 1994-05-18 |
Family
ID=33800227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93221365 Expired - Fee Related CN2165381Y (en) | 1993-08-12 | 1993-08-12 | Electric water heater with electric leakage and overtemp. controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2165381Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102960052A (en) * | 2010-06-24 | 2013-03-06 | 熊津豪威株式会社 | Heater including electrical leakage breaker circuit, method of breaking electrical leakage using the same, and bidet including the same |
| CN105605793A (en) * | 2016-02-17 | 2016-05-25 | 山东省计量科学研究院 | Multipoint temperature measuring and quick temperature sensing thermal circuit breaker for electric water heater |
-
1993
- 1993-08-12 CN CN 93221365 patent/CN2165381Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102960052A (en) * | 2010-06-24 | 2013-03-06 | 熊津豪威株式会社 | Heater including electrical leakage breaker circuit, method of breaking electrical leakage using the same, and bidet including the same |
| CN102960052B (en) * | 2010-06-24 | 2015-11-25 | 熊津豪威株式会社 | Comprise the heater of residual current circuit breaker circuit, use the method that this residual current circuit breaker circuit makes electric leakage disconnect and the sanitary equipment comprising this heater |
| CN105605793A (en) * | 2016-02-17 | 2016-05-25 | 山东省计量科学研究院 | Multipoint temperature measuring and quick temperature sensing thermal circuit breaker for electric water heater |
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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 |