CN2230423Y - Fully-automatic water-boiling-device controller - Google Patents
Fully-automatic water-boiling-device controller Download PDFInfo
- Publication number
- CN2230423Y CN2230423Y CN 95211811 CN95211811U CN2230423Y CN 2230423 Y CN2230423 Y CN 2230423Y CN 95211811 CN95211811 CN 95211811 CN 95211811 U CN95211811 U CN 95211811U CN 2230423 Y CN2230423 Y CN 2230423Y
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- China
- Prior art keywords
- water
- chip
- circuit
- pin
- resistance
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- 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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Abstract
The utility model relates to the technical field of the control of the electric water heater. The utility model solves the defect that the temperature detecting circuit of the controller of the existing electric water heater can not set the temperature control point on the water boiling temperature. The input end of the temperature detecting circuit is provided with a water heating probe head and a thermal insulation probe head. The temperature detecting circuit and a power supply control circuit are provided with a time delay circuit. When the water heating probe head detects that the water temperature of the container achieves the set value, the signal is outputted by the water heating probe head, is delayed for a period of time through the delay circuit, and is outputted to the power supply control circuit, and then electric heater is switched off. When the thermal insulation probe head detects that the water temperature of the container achieves the set value, the thermal insulation probe head directly outputs the signal to the power supply control circuit, and the electric heater is switched on. The utility model has the advantages that the water is boiled; the circuit is simple; the operation is reliable; the regulation is convenient.
Description
The utility model relates to the technical field of electric water boiler, especially the controller of the control heater break-make in the electric water boiler.
In the prior art, because the boiling temperature of water depends on the atmospheric pressure of there and then, in fact this is a uncertain amount, thereby temperature sensing circuit can not fix on the temperature that water seethes with excitement to temperature controlling point in the existing electric water boiler controller, and can only guarantee about 95 ℃, burn the in fact not boiling of the water that; Excessive low water level protection is because the effect of water vapour, detects usually malfunctioningly, do not have protective effect; Owing to adopted mechano-electronic device control section branch discreteness big, made and install, debug and all compare difficulty.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, provide a kind of guarantee water boiled rise, and circuit simple, use full automatic watec-boiler controller reliable, easy to adjust.
For reaching the purpose of this utility model, adopt following measure:
Input at temperature sensing circuit is provided with heat up water probe and insulation probe, between temperature sensing circuit and power control circuit, also be provided with delay circuit, the water temperature that detects in the container of popping one's head in when heating up water reaches when setting value, output signal is delayed time a period of time through delay circuit, export to power control circuit again, disconnect electric heater, when the insulation probe detects water temperature in the container and reaches setting value, directly output signal to power control circuit, connect electric heater.
The drawing of accompanying drawing is described as follows;
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit theory diagrams.
Below in conjunction with accompanying drawing one of them embodiment of the present utility model is described in further detail;
As shown in Figure 1, heat up water probe (3) and insulation probe (4) is temperature-sensitive device, be arranged on the chamber wall that is filled with water, when energising is heated up water, variation along with water temperature, the value of temperature-sensitive device is also along with variation, when water temperature reaches certain value (as 95 ℃), the voltage that is added on the temperature-sensitive device also reaches certain value along with the variation of temperature-sensitive device value, and this voltage is added in the input of temperature sensing circuit (1), and its output is then exported the control signal of a power cutoff, be arranged on the delay circuit (5) between temperature sensing circuit (1) and the power control circuit (2), with this output signal time-delay a period of time, export to power control circuit again, through the time-delay of certain hour, guarantee that water seethes with excitement, make the control circuit control relay disconnect at last, cut off the electricity supply, stop heating; When water temperature descends, the magnitude of voltage that is added in another temperature-sensitive device two ends also changes thereupon, when water temperature dropped to certain particular value, the output of temperature sensing circuit (1) was then exported the control signal of a connection power supply, delivers to power control circuit (2) at once, the closure of control relay, connect power supply water is heated,, so move in circles until the water boiling, realize heating automatically, automatic heat preserving.
Because water conducts electricity, therefore adopted single head water cut-off protection technology, a lack of water probe is set in the container that is filled with water, container links to each other with ground, denys that conduction judges whether water is arranged in the water container by judging between lack of water probe and the container.The lack of water probe is a metallic rod; and insulate between the water container; when in the water container during lack of water; open a way between lack of water probe and the container; control signal is turn-offed in excessive low water level protection circuit (6) output; otherwise control signal is connected in output, and the disconnection that is come control relay by power control circuit (2) is with closed.Be demonstration boiler duty, also being provided with boiling water indication (8) and insulation indication (9), by power control circuit (2) control, lack of water indicates (10) by excessive low water level protection circuit (6) control,
As shown in Figure 2, heat up water in this circuit the probe Rt
1With insulation probe Rt
2Adopt the NTC temperature-sensitive device as detecting element.
Temperature sensing circuit (1) is by ic chip
1With adjustable resistance W
1, W
2Constitute ic chip
1Be the NE555 time base circuit, adjustable resistance W
1With the probe Rt that heats up water
1Be connected between the power supply tie point and ic chip
16 pin link to each other adjustable resistance W
2With insulation probe Rt
2Be connected between the power supply tie point and ic chip
12 pin link to each other.
Delay circuit (5) is by diode D
1, resistance R
7And capacitor C
4Constitute diode D
1With resistance R
7Parallel connection is connected between the input of the output of temperature sensing circuit and power control circuit capacitor C
4Be connected between the input and ground of power control circuit.
Power control circuit (2) is by ic chip
2The break-make of output signal control triode BG is come the switch of control relay J, ic chip
2Be the NE555 time base circuit, 2,6 pin link to each other with the output of delay circuit, at ic chip
23 pin and ground between be provided with by resistance R
5With LED
1The indication (8) of heating up water of series connection.
The excessive low water level protection circuit is mainly by ic chip
3Constitute ic chip
3Be the NE555 time base circuit, 2,6 pin link to each other with the lack of water probe, are provided with resistance R between 2,6 pin and positive source
3, its output 3 pin and ic chip
24 pin link to each other, at ic chip
33 pin and ic chip
23 pin between be provided with by resistance R
4With LED
2The insulation indication (9) of series connection, ic chip
33 and ic chip
24 pin link to each other; At IC
33 pin and positive source between be provided with by resistance R
6With LED
3The lack of water indication (10) of series connection.
Behind closed power supply boiling water, this moment IC
12,6 pin all be in high level, 3 pin output low levels, IC
23 pin output high level, triode conducting, relay adhesive, luminous tube LED simultaneously
1Light, boiler is in the state of heating up water; Along with the rising of water temperature, the NTC resistance descends, and is added to IC
1The voltage of 2,6 pin also descend thereupon, when water temperature is raised to a certain particular value (95 ℃), 2 pin voltages become low level (being lower than supply voltage 1/3), this moment, 3 pin became high level, through capacitance-resistance after time-delay a period of time (guaranteeing that water temperature can reach 100 ℃), IC
22,6 pin become high level, simultaneously 3 pin become low level, triode cuts off the power supply of boiler by, relay, at this moment, luminous tube LED
1Extinguish luminous tube LED
2Light, transfer keeping warm mode to from the state of heating up water; When water temperature descends gradually, the resistance of NTC rises again thereupon, when water temperature drops to a certain particular value (being decided to be 85 ℃), and IC
1The voltage of 6 pin go up to high level, 3 pin step-down level, electric capacity passes through D
1Discharge rapidly, IC
23 pin become high level immediately, triode is conducting again, the relay adhesive, boiler transfers the state of heating up water again to.
Because the lack of water probe places boiler lowest water level place, when at ordinary times water being arranged, probe is to there being certain resistance between the water container, and just the A point has certain resistance, IC between ground
32,6 pin all be in low level, 3 pin output high level, relay is failure to actuate, boiler still is in the state of heating up water, when water level is lower than low water level, IC
32,6 pin become high level, 3 pin output low levels, triode ends, relay disconnects boiler power supply, luminous tube LED
3Light, show lack of water, play the effect of automatic protection.
The utility model IC
1, IC
2And IC
3All adopt the NE555 integrated package, that is to say that suction will adopt conventional device, just can realize boiler heating, the automatic control that is incubated and cuts off the water supply, and three kinds of monitored states that independently do not involve are mutually arranged, the boiler duty is understood, circuit structure is simple, reliable.Because this controller has adopted delay circuit, be not to adopt temperature control promptly back one period heat time heating time, but control certain heat that adds again, make satisfy water from 95 ℃ to water boiling institute calorific requirement, to guarantee that water is by boiled; Consider the temperature of environment, the height of working voltage, the size of container, what of water can be provided with the delay circuit of multiple delay parameter, guarantee that controller all can normally use under various conditions, and debugging is convenient; Owing to adopted the excessive low water level protection device of single probe, avoided making that owing to the ionization of water vapour the excessive low water level protection device is malfunctioning.Owing to adopted integrated circuit and temperature-sensitive device, make all boiler control circuits integrated, make and install easily, and cost is lower than mechanical type, the ratio of performance to price is higher.
Claims (6)
1. full automatic watec-boiler controller that constitutes by temperature sensing circuit (1) and power control circuit (2), it is characterized in that being provided with heat up water probe (3) and insulation probe (4) at the input of temperature sensing circuit (1), between temperature sensing circuit (1) and power control circuit (2), also be provided with delay circuit (5), the water temperature that detects in the container of popping one's head in when heating up water reaches when setting value, output signal is delayed time a period of time through delay circuit, export to power control circuit again, disconnect electric heater, when detecting water temperature container in, insulation probe (4) reaches when setting value, directly output signal to power control circuit (2), connect electric heater.
2. full automatic watec-boiler controller according to claim 1 is characterized in that described delay circuit (5) is by diode D
1, resistance R
7And capacitor C
4Constitute diode D
1With resistance R
7Parallel connection is connected between the input of the output of temperature sensing circuit and power control circuit capacitor C
4Be connected between the input and ground of power control circuit.
3. full automatic watec-boiler controller according to claim 1 and 2 is characterized in that described temperature sensing circuit (1) is by ic chip
1With adjustable resistance W
1, W
2Constitute ic chip
1Be 555 time base circuits, adjustable resistance W
1With the probe Rt that heats up water
1(3) be connected between the power supply tie point and ic chip
16 pin link to each other adjustable resistance W
2With insulation probe Rt
2(4) be connected between the power supply tie point and ic chip
12 pin link to each other.
4. full automatic watec-boiler controller according to claim 1 and 2 is characterized in that described power control circuit (2) is by ic chip
2The break-make of output signal control triode BG is come the switch of control relay J, ic chip
2Be 555 time base circuits, 2,6 pin link to each other with the output of delay circuit.
5. full automatic watec-boiler controller according to claim 4 is characterized in that being provided with by ic chip
3The excessive low water level protection circuit (6) that constitutes, ic chip
3Be 555 time base circuits, 2,6 pin link to each other with water prode, are provided with resistance R between 2,6 pin and positive source
3, its output 3 pin and ic chip
24 pin link to each other.
6. full automatic watec-boiler controller according to claim 5 is characterized in that at ic chip
23 pin and ground between be provided with by resistance R
5With LED
1The indication (8) of heating up water of series connection; At ic chip
33 pin and ic chip
23 pin between be provided with by resistance R
4With LED
2The insulation indication (9) of series connection, ic chip
33 and ic chip
24 pin link to each other; At IC
33 pin and positive source between be provided with by resistance R
6With LED
3The lack of water indication (10) of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95211811 CN2230423Y (en) | 1995-05-12 | 1995-05-12 | Fully-automatic water-boiling-device controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95211811 CN2230423Y (en) | 1995-05-12 | 1995-05-12 | Fully-automatic water-boiling-device controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2230423Y true CN2230423Y (en) | 1996-07-03 |
Family
ID=33862181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95211811 Expired - Fee Related CN2230423Y (en) | 1995-05-12 | 1995-05-12 | Fully-automatic water-boiling-device controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2230423Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101617173B (en) * | 2007-02-23 | 2011-12-21 | Bsh博施及西门子家用器具有限公司 | Water boiling device with a sterilisation function and method for conditioning water |
-
1995
- 1995-05-12 CN CN 95211811 patent/CN2230423Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101617173B (en) * | 2007-02-23 | 2011-12-21 | Bsh博施及西门子家用器具有限公司 | Water boiling device with a sterilisation function and method for conditioning water |
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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 |