CA2615169A1 - Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning - Google Patents
Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning Download PDFInfo
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- CA2615169A1 CA2615169A1 CA002615169A CA2615169A CA2615169A1 CA 2615169 A1 CA2615169 A1 CA 2615169A1 CA 002615169 A CA002615169 A CA 002615169A CA 2615169 A CA2615169 A CA 2615169A CA 2615169 A1 CA2615169 A1 CA 2615169A1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 37
- 230000006870 function Effects 0.000 title claims description 14
- 238000004891 communication Methods 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 23
- 238000012360 testing method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 2
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000004886 process control Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 7
- 101150042678 VAV1 gene Proteins 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- SBWGZAXBCCNRTM-CTHBEMJXSA-N n-methyl-n-[(2s,3r,4r,5r)-2,3,4,5,6-pentahydroxyhexyl]octanamide Chemical compound CCCCCCCC(=O)N(C)C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO SBWGZAXBCCNRTM-CTHBEMJXSA-N 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
- F24H9/2042—Preventing or detecting the return of combustion gases
- F24H9/205—Closing the energy supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/12—Preventing or detecting fluid leakage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
- F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/395—Information to users, e.g. alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Fluid Mechanics (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A gas water heater with a warning function, the gas water heater being disposed in a facility and comprising: a gas water heater main body including a controller having a warning cell; and a gas detecting unit separate from the main body and disposed at an indoor monitoring point of the facility, the gas detecting unit having a gas sensor and being in communication with the controller.
Description
Gas Water Heater with Hannful Gas Monitoring and Warning Functions and the Method of Monitoring and Warning Technical Field The invention relates to a kind of gas water heater with harmful gas monitoring and warning functions, especially a kind of gas water heater can monitor and wam gas-leaking and CO
gas. Meanwhile, it also involves the monitoring and warning methods of the gas water heater. The invention is attributed to technical field of gas appliances for domestic use.
Technical Background According to the statistics, the number of casuaities caused by gas-leaking has ascended to the third place of abnormal casualty, which is only next to traffic and work accidents.
Gas-leaking and CO gas poisoning thereinto caused by failure in using the gas water heater holds the first place. Recently, accidents, including gas-leaking, CO poisoning, and the possible fire, which are caused by using gas water heater have become the "leading kille-" and the main cause that many families dare not use gas water heaters. This is also the direct reason that the market share of gas water heater is caught up by the electric water heater. Now gas water heater only accounts for 40% of the market.
Through patent searching, Joint Action Waming of Gas Water Heater in Chinese utility model patent 00237346.7 publishes a kind of circuit that can integrally process joint actions and auto-control on gas water heaters, ventilation equipment and gas-leaking and excessive exhaust gas warning. The circuit has realized the function that the leaking sensor works intermittentiy under the control of timing circular circuits. The water heater will be tumed off after excessive exhaust gas is wamed and the ventilation equipment will be run after gas-leaking is wamed. Besides, Gas-leaking Protector of Gas WaterHeater with an Extemal A/D Convertor in Chinese design patent application 200510049317.5 provides a kind of gas-leaking protector of gas water heater with an external A/D convertor, through the extemal A/D
convertor; gas sensor output is connected with the I/O input port of single-chip computer in water heater controller. Then the water heater controller is connected with the valve and warning circuits, achieving that the single-chip computer will cut off the gas source and warn when the gas is exceeded.
According to researches, the applicant for this patent has found that the above existing technologies can't completely solve the problems of gas and CO gas leaking. Because in the practical application of water heater, except for the leaking of the water heater itself, other kinds of leaking also happen in gas transportation pipes and other sections. Other gas equipments also let out exhaust gas (such as ovens). Obviously, the above existing technologies can't detect the concentration of gas and CO gas in indoor air, thus they can't effectively prevent the accidents from causing by indoor gas-leaking or concentration of CO gas excess in using gas water heaters. Besides, whether the detective section is always under the normal working condition is the necessary assurance of ensuring the safety of using gas water heater. However, the above existing technologies can't detect whether the waming unit is run out or not. They also didn't consider about the system running mode after the waming unit is run out, thus these technologies have comparatively great limitations in practical applications.
Searching oversea related patents show that although The Controlling System of Gas Water Heater disclosed by American Patent US 5797358 has provided a controlling system that gas sensor, CO
sensor and water heater processor are electrically connected, the above described problems still exist in the technology.
Content of Invention Aiming for the shortcomings of the above existing technologies, the invention chiefly intends to put forward a kind of gas water heater having harmful gas monitoring and waming functions, especially a kind of gas water heater can monitor and warn gas-leaking and CO gas and offer corresponding monitoring and warning methods as well. Thus accidents caused by indoor gas-leaking or CO
concentration excess in using gas water heater can be effectively prevented.
The further purpose of the invention lies in putting forward a kind of gas water heater that can detect whether the waming function is run out, thus to ensure the reliability and safety in using gas water heater.
In order to achieve the above chief purposes, the invention adopts the separate setup heater body and gas detector unit to gas water heater. The gas sensor is involved in the described gas detector unit, which is set up in the indoor place needs to be monitored and connected with the process control unit in the gas water heater body; the described gas detector unit and one of the process control units are connected to the warning unit.
The monitoring and warning steps of the gas water heater in the invention are:
The gas detector unit converts the received signal of gas concentration into electric signal, then transmits to the process control unit in water heater body through communication;
The process control unit in water heater body compares the transmitted signal with the preset threshold.
When the signal exceeds the threshold, a warning command will be sent;
After receiving the warning command, the warning unit will send out warning signal.
When the data process unit is contained in the gas detector unit itself, the monitoring and waming steps of the invention are:
The gas detector unit converts the received signal of gas concentration Into electric signal, and then transmits to the data process unit;
The data process unit compares the transmitted signal with the preset threshold, and then transmits to the process control unit in water heater body through communication; or the data process unit directly transmits the signal to the process control unit in water heater body, then the process control unit compares the received signal with preset threshold;
When the signal exceeds the threshold, a warning command wi!l be made by the data process unit and one of the process control units;
After receiving the warning command, the warning unit will send out a warning signal.
To achieve the further purposes, the process control unit in water heater body and the gas detector unit are connected by duplex wire or wireless communications. The process control unit sends out a testing signal and transmits it to the gas detector unit in working;
If the gas detector unit cannot make response normally, the process control unit sends out an announcing signal.
A further pertection to the invention is that the control output port of the process control unit in water heater body is connected with the controlling unit of the gas transportation line valves. When the received detected signal exceeds the threshold, a warning command and a control signal will be made simultaneously, and the gas transportation line valves will be cut off.
In such case, the gas detector unit can be flexibly fixed in the places that gas and CO concentration can be easily collected, according to the actual needs. The water heater is installed in safe and easily-controlled positions. If the user doesn't need gas detecting function or the gas detector unit is running out and in servicing, the process control unit in water heater body will work according to no warning function setup. Meanwhile, an announcing message of "The gas detector unit is run out" will be shown on the host computer. When the chief controller of the water heater detects the gas detector unit works normally, it accepts and responds to the signal sent by the gas detector unit in time and control the waming and cut off the gas source through processing.
It is easily understood that the beneficial effects of the invention is: gas water heaters of various types (especially the speedy gas water heater) and the gas detector unit can be installed separately, thus to overcome the limitations of the existing technologies, such as it can't monitor the leaking in transportation pipe or some other sections and other gas equipments may let out exhaust gas in application. Meanwhile, the invention can effectively prevent the accidents from causing by indoor gas-leaking or concentration of CO gas excess in using gas water heater and bring more use value to the user and the society.
Illustrations Figure 1 is the circuit diagram of the implementing example 1 in the invention.
Figure 2 is the principle frame figure corresponding to the implementing example in figure 1.
Figure 3 is the circuit principte figure of the impiementing example 2 in the invention.
Figure 4 is the principle frame figure corresponding to the implementing example in figure 3.
Concrete Implementing Methods Combined with attached figures, the author will select some excellent implementing examples to make a further instruction to the patent.
Implementing example 1 Gas water heater having gas-leaking and/or CO gas waming functions in this implementing example is shown as Figure 1.
Gas detector unit 1 and the gas water heater body 2 are disassembled and can be installed separately.
The two parts process data communications with the serial port communication chips U1 (Type MAX202) and U2 (Type MAX202) and the electric power is offered by the water heater.
Data process chip IC2 (Type H83694), display module 9, communication chip U2, buzzer Fl and gas valve Vav1 functioning as the process control unit are contained in the water heater body. IC2 contains the memory unit EEPROM8.
CO sensor &]Type TGS2442q data process chip IC1(Type Mega 8) and IC1 serial port communication chips U1 (Type MAX202) are contained in gas detector unit 1, they process serial port communications with the water heater body. The I/O ports PB1 and PB2 of C1 output impulse signals control CO sensor through on-and-off pipes T3 and T4. CO sensor 5 can feel the gas concentration in the ambient environment through sensitive materials, and then outputs the change of voltage and transmits it to I/O
ports PCO of IC1. After receiving the change of voltage, PCO processes AID
transformation with the internal A/D transforming module and converts to practical concentration values. Meanwhile, PCO
detects whether the CO concentration exceeds the defined warning concentration. Then, through serial port data communication chips U1 and U2, IC1 sends a message of concentration values to the data process chip IC2 in the water heater body. IC2 receives the data message from gas detector unit 1 through serial port communication chips U2, and then displays the data in time through display module 9. Meanwhile, IC2 sets the saving time of the data in terms of procedures and saves them in EEPROM 8 so as to offer useful data if necessary. At the same time, based on the data message from serial port communication chips U2, IC2 makes PB1 and PB2 control buzzer Fl and gas valve Vav1 switch through on-and-off pipes T1, T2 and relay Rel.
Besides, IC1 can detect in time whether the CO sensor 5 is running out and transmits the message to IC2 through communication chip U1 and U2. If the detection Is failed, IC2 will control the operation of the water heater and provide a clue message based on the message.
When the concentration value of indoor CO gas is lower than the defined warning value, IC2 outputs the message received from serial port communication chip U2 to display module 9, and the water heater works normally; when the concentration value of indoor CO gas is higher than the defined warning value, IC2 outputs a control signal to on-and-off pipe T2 and cuts off the power of gas valve Vav1 through Relay Rel; at the same time, IC2 outputs the signal to on-and-off pipe T1 and controls buzzer Fl to wam; IC2 also offers a data signal and outputs waming codes through display module 9.
When the users apply other gas equipments instead of the gas water heater^but here the water heater is electricaiiy connected ^, if the indoor CO concentration doesn't achieve the defined warning concentration, gas detector unit 1 will feed back a concentration signal to IC2; the chief controller IC2 will show the signal on display module 9 after receiving it; if the indoor CO
concentration increases and achieves the defined warning concentration, the chief controller IC2 will start buzzer Fl after receiving the signal, and then controls display module 9 to put up a flashing warning and sends out related control signals to prevent gas valve Vav1 from starting. When the indoor gas concentration resumes to the normal condition, gas detector unit I will feed back a signal to IC2;
after receiving the signal, IC2 will stop the acousto-optic waming of buzzer Fl and display module 9 and release a signal of forbidding opening the gas valve Vav1.
Referring to figure 2, the working process of the implementing example can be simply described as follow: when there is flammable gas and/or CO gas within the room, gas sensor 5 outputs related signals to the data process chip IC1 after detecting the gas concentration;
the data process chip IC1 converts corresponding concentration numerical values after detecting the signals from sensor 5 and judges if the concentration value exceeds the defined waming concentration.
Then IC1 transmits the related data to the water heater data process chip IC2 through data communication modules U1 and U2; based on related data, IC2 controls display module 9 to show the concentration and saves the data on memory module 8. If the concentration value exceeds the defined waming concentration, IC2 will make waming module 6 to put up an acousto-optic waming and cut off the gas valve through gas valve control module 7.
After detecting the signal from sensor 5, the data process chip IC1 can also directiy transmit the signal to water heater data process chip IC2 through data communication modules U1 and U2. The data will be converted into corresponding numerical values by IC2 and judged if the concentration value exceeds the defined waming concentration, then corresponding controlling measures will be made.
After converting the signal from sensor 5 into corresponding numerical values, the data process chip IC1 can also transmit the signal to IC2 through data communication modules U1 and U2.
gas. Meanwhile, it also involves the monitoring and warning methods of the gas water heater. The invention is attributed to technical field of gas appliances for domestic use.
Technical Background According to the statistics, the number of casuaities caused by gas-leaking has ascended to the third place of abnormal casualty, which is only next to traffic and work accidents.
Gas-leaking and CO gas poisoning thereinto caused by failure in using the gas water heater holds the first place. Recently, accidents, including gas-leaking, CO poisoning, and the possible fire, which are caused by using gas water heater have become the "leading kille-" and the main cause that many families dare not use gas water heaters. This is also the direct reason that the market share of gas water heater is caught up by the electric water heater. Now gas water heater only accounts for 40% of the market.
Through patent searching, Joint Action Waming of Gas Water Heater in Chinese utility model patent 00237346.7 publishes a kind of circuit that can integrally process joint actions and auto-control on gas water heaters, ventilation equipment and gas-leaking and excessive exhaust gas warning. The circuit has realized the function that the leaking sensor works intermittentiy under the control of timing circular circuits. The water heater will be tumed off after excessive exhaust gas is wamed and the ventilation equipment will be run after gas-leaking is wamed. Besides, Gas-leaking Protector of Gas WaterHeater with an Extemal A/D Convertor in Chinese design patent application 200510049317.5 provides a kind of gas-leaking protector of gas water heater with an external A/D convertor, through the extemal A/D
convertor; gas sensor output is connected with the I/O input port of single-chip computer in water heater controller. Then the water heater controller is connected with the valve and warning circuits, achieving that the single-chip computer will cut off the gas source and warn when the gas is exceeded.
According to researches, the applicant for this patent has found that the above existing technologies can't completely solve the problems of gas and CO gas leaking. Because in the practical application of water heater, except for the leaking of the water heater itself, other kinds of leaking also happen in gas transportation pipes and other sections. Other gas equipments also let out exhaust gas (such as ovens). Obviously, the above existing technologies can't detect the concentration of gas and CO gas in indoor air, thus they can't effectively prevent the accidents from causing by indoor gas-leaking or concentration of CO gas excess in using gas water heaters. Besides, whether the detective section is always under the normal working condition is the necessary assurance of ensuring the safety of using gas water heater. However, the above existing technologies can't detect whether the waming unit is run out or not. They also didn't consider about the system running mode after the waming unit is run out, thus these technologies have comparatively great limitations in practical applications.
Searching oversea related patents show that although The Controlling System of Gas Water Heater disclosed by American Patent US 5797358 has provided a controlling system that gas sensor, CO
sensor and water heater processor are electrically connected, the above described problems still exist in the technology.
Content of Invention Aiming for the shortcomings of the above existing technologies, the invention chiefly intends to put forward a kind of gas water heater having harmful gas monitoring and waming functions, especially a kind of gas water heater can monitor and warn gas-leaking and CO gas and offer corresponding monitoring and warning methods as well. Thus accidents caused by indoor gas-leaking or CO
concentration excess in using gas water heater can be effectively prevented.
The further purpose of the invention lies in putting forward a kind of gas water heater that can detect whether the waming function is run out, thus to ensure the reliability and safety in using gas water heater.
In order to achieve the above chief purposes, the invention adopts the separate setup heater body and gas detector unit to gas water heater. The gas sensor is involved in the described gas detector unit, which is set up in the indoor place needs to be monitored and connected with the process control unit in the gas water heater body; the described gas detector unit and one of the process control units are connected to the warning unit.
The monitoring and warning steps of the gas water heater in the invention are:
The gas detector unit converts the received signal of gas concentration into electric signal, then transmits to the process control unit in water heater body through communication;
The process control unit in water heater body compares the transmitted signal with the preset threshold.
When the signal exceeds the threshold, a warning command will be sent;
After receiving the warning command, the warning unit will send out warning signal.
When the data process unit is contained in the gas detector unit itself, the monitoring and waming steps of the invention are:
The gas detector unit converts the received signal of gas concentration Into electric signal, and then transmits to the data process unit;
The data process unit compares the transmitted signal with the preset threshold, and then transmits to the process control unit in water heater body through communication; or the data process unit directly transmits the signal to the process control unit in water heater body, then the process control unit compares the received signal with preset threshold;
When the signal exceeds the threshold, a warning command wi!l be made by the data process unit and one of the process control units;
After receiving the warning command, the warning unit will send out a warning signal.
To achieve the further purposes, the process control unit in water heater body and the gas detector unit are connected by duplex wire or wireless communications. The process control unit sends out a testing signal and transmits it to the gas detector unit in working;
If the gas detector unit cannot make response normally, the process control unit sends out an announcing signal.
A further pertection to the invention is that the control output port of the process control unit in water heater body is connected with the controlling unit of the gas transportation line valves. When the received detected signal exceeds the threshold, a warning command and a control signal will be made simultaneously, and the gas transportation line valves will be cut off.
In such case, the gas detector unit can be flexibly fixed in the places that gas and CO concentration can be easily collected, according to the actual needs. The water heater is installed in safe and easily-controlled positions. If the user doesn't need gas detecting function or the gas detector unit is running out and in servicing, the process control unit in water heater body will work according to no warning function setup. Meanwhile, an announcing message of "The gas detector unit is run out" will be shown on the host computer. When the chief controller of the water heater detects the gas detector unit works normally, it accepts and responds to the signal sent by the gas detector unit in time and control the waming and cut off the gas source through processing.
It is easily understood that the beneficial effects of the invention is: gas water heaters of various types (especially the speedy gas water heater) and the gas detector unit can be installed separately, thus to overcome the limitations of the existing technologies, such as it can't monitor the leaking in transportation pipe or some other sections and other gas equipments may let out exhaust gas in application. Meanwhile, the invention can effectively prevent the accidents from causing by indoor gas-leaking or concentration of CO gas excess in using gas water heater and bring more use value to the user and the society.
Illustrations Figure 1 is the circuit diagram of the implementing example 1 in the invention.
Figure 2 is the principle frame figure corresponding to the implementing example in figure 1.
Figure 3 is the circuit principte figure of the impiementing example 2 in the invention.
Figure 4 is the principle frame figure corresponding to the implementing example in figure 3.
Concrete Implementing Methods Combined with attached figures, the author will select some excellent implementing examples to make a further instruction to the patent.
Implementing example 1 Gas water heater having gas-leaking and/or CO gas waming functions in this implementing example is shown as Figure 1.
Gas detector unit 1 and the gas water heater body 2 are disassembled and can be installed separately.
The two parts process data communications with the serial port communication chips U1 (Type MAX202) and U2 (Type MAX202) and the electric power is offered by the water heater.
Data process chip IC2 (Type H83694), display module 9, communication chip U2, buzzer Fl and gas valve Vav1 functioning as the process control unit are contained in the water heater body. IC2 contains the memory unit EEPROM8.
CO sensor &]Type TGS2442q data process chip IC1(Type Mega 8) and IC1 serial port communication chips U1 (Type MAX202) are contained in gas detector unit 1, they process serial port communications with the water heater body. The I/O ports PB1 and PB2 of C1 output impulse signals control CO sensor through on-and-off pipes T3 and T4. CO sensor 5 can feel the gas concentration in the ambient environment through sensitive materials, and then outputs the change of voltage and transmits it to I/O
ports PCO of IC1. After receiving the change of voltage, PCO processes AID
transformation with the internal A/D transforming module and converts to practical concentration values. Meanwhile, PCO
detects whether the CO concentration exceeds the defined warning concentration. Then, through serial port data communication chips U1 and U2, IC1 sends a message of concentration values to the data process chip IC2 in the water heater body. IC2 receives the data message from gas detector unit 1 through serial port communication chips U2, and then displays the data in time through display module 9. Meanwhile, IC2 sets the saving time of the data in terms of procedures and saves them in EEPROM 8 so as to offer useful data if necessary. At the same time, based on the data message from serial port communication chips U2, IC2 makes PB1 and PB2 control buzzer Fl and gas valve Vav1 switch through on-and-off pipes T1, T2 and relay Rel.
Besides, IC1 can detect in time whether the CO sensor 5 is running out and transmits the message to IC2 through communication chip U1 and U2. If the detection Is failed, IC2 will control the operation of the water heater and provide a clue message based on the message.
When the concentration value of indoor CO gas is lower than the defined warning value, IC2 outputs the message received from serial port communication chip U2 to display module 9, and the water heater works normally; when the concentration value of indoor CO gas is higher than the defined warning value, IC2 outputs a control signal to on-and-off pipe T2 and cuts off the power of gas valve Vav1 through Relay Rel; at the same time, IC2 outputs the signal to on-and-off pipe T1 and controls buzzer Fl to wam; IC2 also offers a data signal and outputs waming codes through display module 9.
When the users apply other gas equipments instead of the gas water heater^but here the water heater is electricaiiy connected ^, if the indoor CO concentration doesn't achieve the defined warning concentration, gas detector unit 1 will feed back a concentration signal to IC2; the chief controller IC2 will show the signal on display module 9 after receiving it; if the indoor CO
concentration increases and achieves the defined warning concentration, the chief controller IC2 will start buzzer Fl after receiving the signal, and then controls display module 9 to put up a flashing warning and sends out related control signals to prevent gas valve Vav1 from starting. When the indoor gas concentration resumes to the normal condition, gas detector unit I will feed back a signal to IC2;
after receiving the signal, IC2 will stop the acousto-optic waming of buzzer Fl and display module 9 and release a signal of forbidding opening the gas valve Vav1.
Referring to figure 2, the working process of the implementing example can be simply described as follow: when there is flammable gas and/or CO gas within the room, gas sensor 5 outputs related signals to the data process chip IC1 after detecting the gas concentration;
the data process chip IC1 converts corresponding concentration numerical values after detecting the signals from sensor 5 and judges if the concentration value exceeds the defined waming concentration.
Then IC1 transmits the related data to the water heater data process chip IC2 through data communication modules U1 and U2; based on related data, IC2 controls display module 9 to show the concentration and saves the data on memory module 8. If the concentration value exceeds the defined waming concentration, IC2 will make waming module 6 to put up an acousto-optic waming and cut off the gas valve through gas valve control module 7.
After detecting the signal from sensor 5, the data process chip IC1 can also directiy transmit the signal to water heater data process chip IC2 through data communication modules U1 and U2. The data will be converted into corresponding numerical values by IC2 and judged if the concentration value exceeds the defined waming concentration, then corresponding controlling measures will be made.
After converting the signal from sensor 5 into corresponding numerical values, the data process chip IC1 can also transmit the signal to IC2 through data communication modules U1 and U2.
Corresponding controlling measures can be made after judged by IC2.
6' in the figure indicates that the warning module can be positioned with the detect unit as well and 8'indicates that the saving module can be extemally installed.
Implementing Example 2 Basic status of the circuit principle in this implementing example is similar with the above example, just shown as Figure 3. Similarly, gas detector unit 1 and gas water heater body 2 are installed separately and connected with signal lines. Their difference lies in that the I/O port P20 and P21 impulse signals of data process chip IC (Type H83694) are contained in the gas water heater body 2; sensor 5 on gas detector unit 1 is controlled by on-and-off pipes T3, T4, T5, T6 and T7; CO
sensor 5 feels the gas concentration in the ambient environment through sensitive materials, and then outputs the change of voltage and transmits to the I/O port PBO of Cl. After receiving the change of voltage, PBO processes A/D transformation with the internal A/D transforming module and converts into practical concentration values. Meanwhile, PBO detects whether the CO concentration exceeds the defined waming concentration. The working principles can be referred to the above described practical example. Here the author won't say any more.
Its working principles can be referred to Figure 4. When there is flammable gas and/or CO gas within the room, gas sensor 5 outputs related signals to the data process chip IC
after detecting the gas concentration; the data process chip IC converts the data into corresponding concentration numerical values after detecting the signals from sensor 5 and judges if the concentration value exceeds the defined warning concentration. IC controls display module 9 to show the concentration based on the concentration and saves the data to memory module 8. If the concentration value exceeds the defined waming concentration, IC will make waming module 6 to put up acousto-optic warning and cut off the gas valve through gas valve control module 7.
The invention is not limited to the above described implementing examples;
many other changing designs are permitted. For example, the communication mode can includes both wire and wireless, duplex and simplex; waming unit can be controlled either by the process control unit in the water heater body, or by the data process unit within the detect unit directly; display warning in the warning unit can either be shown on the screen of gas water heater, or set up individually;
various separate devices within the circuit can be further integrated or the integrated devices can be further separated; and so on.
Any technical scheme formed by adopting the equivalent substitution or the equivalent transformation is under the protection of the invention requirements.
6' in the figure indicates that the warning module can be positioned with the detect unit as well and 8'indicates that the saving module can be extemally installed.
Implementing Example 2 Basic status of the circuit principle in this implementing example is similar with the above example, just shown as Figure 3. Similarly, gas detector unit 1 and gas water heater body 2 are installed separately and connected with signal lines. Their difference lies in that the I/O port P20 and P21 impulse signals of data process chip IC (Type H83694) are contained in the gas water heater body 2; sensor 5 on gas detector unit 1 is controlled by on-and-off pipes T3, T4, T5, T6 and T7; CO
sensor 5 feels the gas concentration in the ambient environment through sensitive materials, and then outputs the change of voltage and transmits to the I/O port PBO of Cl. After receiving the change of voltage, PBO processes A/D transformation with the internal A/D transforming module and converts into practical concentration values. Meanwhile, PBO detects whether the CO concentration exceeds the defined waming concentration. The working principles can be referred to the above described practical example. Here the author won't say any more.
Its working principles can be referred to Figure 4. When there is flammable gas and/or CO gas within the room, gas sensor 5 outputs related signals to the data process chip IC
after detecting the gas concentration; the data process chip IC converts the data into corresponding concentration numerical values after detecting the signals from sensor 5 and judges if the concentration value exceeds the defined warning concentration. IC controls display module 9 to show the concentration based on the concentration and saves the data to memory module 8. If the concentration value exceeds the defined waming concentration, IC will make waming module 6 to put up acousto-optic warning and cut off the gas valve through gas valve control module 7.
The invention is not limited to the above described implementing examples;
many other changing designs are permitted. For example, the communication mode can includes both wire and wireless, duplex and simplex; waming unit can be controlled either by the process control unit in the water heater body, or by the data process unit within the detect unit directly; display warning in the warning unit can either be shown on the screen of gas water heater, or set up individually;
various separate devices within the circuit can be further integrated or the integrated devices can be further separated; and so on.
Any technical scheme formed by adopting the equivalent substitution or the equivalent transformation is under the protection of the invention requirements.
Claims (11)
1. A kind of gas water heater with gas leakage and (or) CO warning function, feature includes: the gas water heater main body is separated with gas detecting unit;
the gas detecting unit includes gas sensor which is installed at indoor monitoring point and is connected with the controlling & processing in the gas water heater main body through communication; the gas detecting unit or controlling & processing unit is connected with the warning cell.
the gas detecting unit includes gas sensor which is installed at indoor monitoring point and is connected with the controlling & processing in the gas water heater main body through communication; the gas detecting unit or controlling & processing unit is connected with the warning cell.
2. The gas water heater as described in claim 1, the controlling & processing unit in the gas water heater is connected with the gas detecting unit through duplex communication.
3. The gas water heater as described in claim 2, the output port of the controlling &
processing unit in the gas water heater is connected with the controlled port of the gas valve in the gas supply pipeline.
processing unit in the gas water heater is connected with the controlled port of the gas valve in the gas supply pipeline.
4. The gas water heater as described in claim 2, the main body of the gas water heater includes display module connected with the controlling unit for displaying CO
density and light warning signal.
density and light warning signal.
5. The gas water heater as described in claim 2, the main body of the gas water heater includes memory cell connected with the controlling & processing unit. The memory cell saves the detecting data for reading data when required. The memory cell can also be included in the detecting unit.
6. The monitoring & warning method of gas water heater with gas leakage and (or) CO
warning function as described in claim 1, feature includes:
Gas detecting unit converts the gas density signal into electricity signal and transmits the signal to the controlling & processing unit in the main body through communication;
Controlling & processing unit compares the delivered signal with the presetting threshold. Once the signal value exceeds the threshold, the controlling & processing unit will send out warning instruction;
Once receiving the warning instruction, the warning cell will send out warning signal.
warning function as described in claim 1, feature includes:
Gas detecting unit converts the gas density signal into electricity signal and transmits the signal to the controlling & processing unit in the main body through communication;
Controlling & processing unit compares the delivered signal with the presetting threshold. Once the signal value exceeds the threshold, the controlling & processing unit will send out warning instruction;
Once receiving the warning instruction, the warning cell will send out warning signal.
7. The monitoring & warning method of gas water heater with gas leakage and (or) CO
warning function as described in Claim 1, feature includes: when the gas detecting unit includes data processing module, the monitoring & warning process is as follows, Gas detecting module converts the gas density signal into electricity signal and transmits the signal to the data processing module;
Data processing module compares the delivered signal with the presetting threshold and at the same time transmits the signal to the controlling & processing unit in the main body through communication. Or data processing module directly transmits the signal to the controlling &
processing unit in the main body through communication. Controlling &
processing unit compares the delivered signal with the presetting threshold.
Once the signal value exceeds the threshold, the data processing module or the controlling &
processing unit will send out warning instruction;
Once receiving the warning instruction, the warning cell will send out warning signal.
warning function as described in Claim 1, feature includes: when the gas detecting unit includes data processing module, the monitoring & warning process is as follows, Gas detecting module converts the gas density signal into electricity signal and transmits the signal to the data processing module;
Data processing module compares the delivered signal with the presetting threshold and at the same time transmits the signal to the controlling & processing unit in the main body through communication. Or data processing module directly transmits the signal to the controlling &
processing unit in the main body through communication. Controlling &
processing unit compares the delivered signal with the presetting threshold.
Once the signal value exceeds the threshold, the data processing module or the controlling &
processing unit will send out warning instruction;
Once receiving the warning instruction, the warning cell will send out warning signal.
8. The monitoring & warning method of gas water heater as described in claim 6 or 7, feature includes: the processing & controlling unit in the main body of gas water heater is connected with the gas detecting unit through duplex communication. In working status, the processing & controlling unit sends out test signal and transmits to gas detecting unit. When the gas detecting unit can not respond normally, the processing & controlling unit sends out report signal.
9. The monitoring & warning method of gas water heater as described in claim 8, feature includes: the output port of the processing & controlling unit in the main body of gas water heater is connected with the controlled port of the gas valve in the gas supply pipeline.
Once receiving the detecting signal and the signal exceeds threshold, the processing &
controlling unit will send out warning instruction and also send out controlling signal to switch off the gas valve in the gas supply pipeline.
Once receiving the detecting signal and the signal exceeds threshold, the processing &
controlling unit will send out warning instruction and also send out controlling signal to switch off the gas valve in the gas supply pipeline.
10. A gas water heater with a warning function, the gas water heater being disposed in a facility and comprising:
a gas water heater main body including a controller having a warning cell; and a gas detecting unit separate from the main body and disposed at an indoor monitoring point of the facility, the gas detecting unit having a gas sensor and being in communication with the controller.
a gas water heater main body including a controller having a warning cell; and a gas detecting unit separate from the main body and disposed at an indoor monitoring point of the facility, the gas detecting unit having a gas sensor and being in communication with the controller.
11. A method of controlling a gas water heater having a warning function, the gas water heater including a main body and a gas detecting unit, the main body including a gas water heater controller and the gas water heater being disposed in a facility, the method comprising:
disposing the gas detecting unit at an indoor monitoring point separate from the main body;
the gas detecting module sensing a gas density;
the gas detecting module converting the sensed gas density into a gas density value;
the gas detecting module transmitting to the controller a signal based on the gas density value;
comparing the gas density value with a threshold; and the controller initiating a warning after the gas density value traverses the threshold.
disposing the gas detecting unit at an indoor monitoring point separate from the main body;
the gas detecting module sensing a gas density;
the gas detecting module converting the sensed gas density into a gas density value;
the gas detecting module transmitting to the controller a signal based on the gas density value;
comparing the gas density value with a threshold; and the controller initiating a warning after the gas density value traverses the threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2615169A CA2615169C (en) | 2007-12-17 | 2007-12-17 | Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2615169A CA2615169C (en) | 2007-12-17 | 2007-12-17 | Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2615169A1 true CA2615169A1 (en) | 2009-06-17 |
| CA2615169C CA2615169C (en) | 2016-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2615169A Active CA2615169C (en) | 2007-12-17 | 2007-12-17 | Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning |
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| CA (1) | CA2615169C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808499A (en) * | 2017-10-31 | 2018-03-16 | 张良 | Gas monitoring warning system |
| CN111947316A (en) * | 2019-05-14 | 2020-11-17 | 芜湖美的厨卫电器制造有限公司 | Gas water heater system, gas water heater and control method thereof |
| CN112305174A (en) * | 2020-11-26 | 2021-02-02 | 北京中电华劳科技有限公司 | Gas detector |
| CN113744505A (en) * | 2021-08-16 | 2021-12-03 | 吴海广 | Combustible gas detection alarm |
-
2007
- 2007-12-17 CA CA2615169A patent/CA2615169C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808499A (en) * | 2017-10-31 | 2018-03-16 | 张良 | Gas monitoring warning system |
| CN111947316A (en) * | 2019-05-14 | 2020-11-17 | 芜湖美的厨卫电器制造有限公司 | Gas water heater system, gas water heater and control method thereof |
| CN112305174A (en) * | 2020-11-26 | 2021-02-02 | 北京中电华劳科技有限公司 | Gas detector |
| CN113744505A (en) * | 2021-08-16 | 2021-12-03 | 吴海广 | Combustible gas detection alarm |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2615169C (en) | 2016-02-09 |
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