CN113587437A - Preheating method of gas water heating equipment and gas water heating equipment - Google Patents
Preheating method of gas water heating equipment and gas water heating equipment Download PDFInfo
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- CN113587437A CN113587437A CN202110709657.5A CN202110709657A CN113587437A CN 113587437 A CN113587437 A CN 113587437A CN 202110709657 A CN202110709657 A CN 202110709657A CN 113587437 A CN113587437 A CN 113587437A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 421
- 238000010438 heat treatment Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 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
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- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
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- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- 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)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a preheating method of gas water heating equipment and the gas water heating equipment. The preheating method of the gas water heating equipment comprises the following steps: s1: the gas water heating equipment is in a common mode; s2: selecting a preheating mode; s3: judging whether a first mode is selected, if so, starting a water pump of the gas water heating equipment at a first gear to open a first water way switch valve M1 arranged in a first water way, and then entering S100, and if not, entering S4; s4: and judging whether the second mode is selected, if so, starting a water pump of the gas water heater device at a gear position two to open the first water path switch valve M1 and a second water path switch valve M2 arranged in a second water path, and then entering S100. The gas water heating equipment provided by the invention adopts the preheating mode to preheat.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a preheating method of gas water heating equipment and the gas water heating equipment.
Background
At present, zero cold water gas water heaters are becoming the trend of the water heater industry because they can realize that hot water can be used immediately after being started, and are more and more favored by consumers. But with the use of zero cold water gas water heaters, the problems with them are gradually discovered. Because the whole pipe network water path in the user house needs to be heated in the preheating process, the preheating time is long, the energy consumption is high, and the problem that the heating is carried out immediately after the heating is started cannot be realized in the actual use process, so that the user complains the user.
Therefore, a preheating method of a gas-fired water heating apparatus is needed to solve the above problems.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore, the invention provides a preheating method of gas water heating equipment, which has the advantages of higher preheating speed and lower energy consumption.
The above purpose is realized by the following technical scheme:
a preheating method of a gas water heating device comprises the following steps:
s1: the gas water heating equipment is in a common mode;
s2: selecting a preheating mode;
s3: judging whether a first mode is selected, if the first mode is selected, starting a water pump of the gas water heating equipment at a first gear to open a first water path switch valve M1 arranged in a first water path, and then entering S100, and if the first mode is not selected, entering S4;
s4: judging whether a second mode is selected, if the second mode is selected, starting the water pump of the gas water heater device at a gear position two to open the first water path switch valve M1 and a second water path switch valve M2 arranged in a second water path, and then entering S100, and if the second mode is not selected, entering S5;
……
sn: judging whether an nth mode is selected, if the nth mode is selected, starting the water pump of the gas water heating equipment at a gear n to open a first water path switch valve M1, a second water path switch valve M2 … … and an nth water path switch valve Mn arranged in an nth water path, and then entering S100, if the nth mode is not selected, entering Sn + 1;
sn + 1: judging whether an n +1 th mode is selected or not, if the n +1 th mode is selected, starting the water pump on the gas hot water at a gear n +1 to open a first water path switching valve M1, a second water path switching valve M2, a … … nth water path switching valve and an n +1 th water path switching valve arranged in an n +1 th water path, and then entering S100;
s100: igniting and burning the gas water heating equipment, and entering a preheating working mode;
wherein n is a natural number.
Optionally, S100 further includes S10: and judging whether the real-time water inflow rate of the gas water heating equipment is greater than a preset starting flow rate or not, and if so, entering S100.
Optionally, in S10, if the real-time water inlet flow of the gas water heating apparatus is less than or equal to the preset startup flow, the method proceeds to S20: and closing the water pump, and turning off the gas water heating equipment and reporting an error.
Optionally, the operating current of the water pump is gradually increased from the first gear to the n +1 gear, and the valve sealing forces of the first hydraulic switch valve M1, the second hydraulic switch valve M2, the nth hydraulic switch valve Mn, and the n +1 th hydraulic switch valve Mn +1 are sequentially increased and are arranged in one-to-one correspondence with the first gear to the n +1 gear of the water pump.
The invention also provides a gas water heater which adopts the preheating method for preheating, the gas water heater comprises a gas water heater, a hot water waterway, a cold water waterway, a plurality of water consumption points and a plurality of switch valves which are arranged in one-to-one correspondence with the plurality of water consumption points, the gas water heater comprises a water pump, the water inlet end of the hot water waterway is communicated with the hot water outlet 12 of the gas water heater, the water outlet end of the hot water waterway is communicated with the plurality of water consumption points, the cold water waterway comprises a gas water heater water supply waterway and a water consumption point water supply waterway, the gas water heater water supply waterway is communicated with the cold water inlet 11 of the gas water heater, the water consumption point water supply waterway is communicated with the plurality of water consumption points, the water pump is communicated with the gas water heater water supply waterway, and the water pump can send the water in the cold water waterway and the hot water waterway to the gas water heater water supply waterway, the switch valves are connected in parallel and installed at two ends of a water consumption point hot water inlet and a water consumption point cold water inlet of the water consumption point; or the gas water heater further comprises a water return waterway, wherein the water inlet end of the water return waterway is communicated with the water return outlet of the gas water heater, the water outlet end of the water return waterway is connected with the plurality of water consumption point hot water inlets and the plurality of water consumption point cold water inlets in parallel, and in the structure, the switch valves in the plurality of water consumption points are arranged as follows: the switch valves are installed at the two ends of the water return waterway and the water consumption point hot water inlet in parallel.
Optionally, the on-off valve is a one-way valve.
Optionally, the gas water heater further comprises:
a water pipe having one end communicating with the cold water inlet 11 and the other end communicating with the hot water outlet 12;
the middle part of the water pipe passes through the combustion heat exchange system, and the combustion heat exchange system heats water in the water pipe;
and the flow sensing device is arranged at one end, close to the cold water inlet 11, of the water pipe and used for detecting the real-time water inlet flow of the water pipe.
Optionally, the gas water heater further comprises:
the gas supply structure is connected with the gas supply system and used for supplying gas to the combustion heat exchange system;
the flow sensing device and the gas supply structure are in communication connection with the controller;
and the controller is in communication connection with the controller, and a user can select a preheating mode and adjust the air supply quantity of the air supply structure through the controller.
Optionally, the manipulator comprises:
a preheating mode button for selecting a preheating mode;
and the temperature adjusting button is used for adjusting the temperature of the water heater so as to adjust the heating temperature of the combustion heat exchange system to the water in the water pipe.
Optionally, the gas supply structure comprises:
the combustion heat exchange system is communicated with an external gas pipeline through the gas supply system;
the gas valve is arranged on the gas supply system and is in communication connection with the controller, and the gas valve is opened and closed according to the real-time flow detected by the flow sensing device and adjusts the opening degree according to preset temperature information provided by the temperature adjusting button.
Compared with the prior art, the invention at least comprises the following beneficial effects:
according to the preheating method of the gas water heating equipment, different preheating modes are set, different water pump gears are set, different water pump powers are obtained, the switch valves in part or all of the water paths are opened, and instant circulating preheating of the selected water consumption points is achieved, so that preheating time is shortened, and energy consumption is reduced.
Drawings
FIG. 1 is a step diagram of a method for preheating a gas-fired water heating apparatus according to an embodiment of the present invention;
fig. 2 is a graph of the water pump speed when the water pump gear of the gas water heating apparatus according to the embodiment of the present invention increases with the increase of the current;
FIG. 3 is a schematic diagram of the connection of a gas-fired water heating apparatus having three water consumption points and the above structure according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a connection mode of a gas water heating device with three local water consumption points and the structure, according to an embodiment of the present invention.
In the figure:
1. a gas water heater; 10. a backwater outlet; 11. a cold water inlet 11; 12. a hot water outlet 12; 13. a water pipe; 14. a combustion heat exchange system; 15. a manipulator; 16. a flow sensing device; 17. a controller; 18. a water pump;
2. a hot water waterway;
3. a cold water waterway; 31. a water supply waterway of the gas water heater; 32. a water supply pipeline is used for supplying water;
4. a water return waterway;
100. a first water spot; 200. a second water point; 300. and a third water point.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Referring to fig. 1, the present invention provides a preheating method for a gas water heater, including the following steps:
s1: the gas water heating equipment is in a common mode;
s2: selecting a preheating mode;
s3: judging whether a first mode is selected, if the first mode is selected, starting a water pump 18 of the gas water heating equipment at a first gear to open a first water path switch valve M1 arranged in a first water path, and then entering S100, and if the first mode is not selected, entering S4;
s4: judging whether the second mode is selected, if the second mode is selected, starting the water pump 18 of the gas water heater 1 at a gear position two to open the first water path switch valve M1 and a second water path switch valve M2 arranged in a second water path, and then entering S100, and if the second mode is not selected, entering S5;
……
sn: judging whether the nth mode is selected, if the nth mode is selected, starting the water pump 18 of the gas water heating equipment at a gear n to open the first water path switch valve M1, the second water path switch valve M2 … … and the nth water path switch valve Mn arranged in the nth water path, and then entering S100, and if the nth mode is not selected, entering Sn + 1;
sn + 1: judging whether an n +1 th mode is selected, if the n +1 th mode is selected, starting the water pump 18 on the gas hot water at a gear n +1 to open the first water path switching valve M1, the second water path switching valves M2 and … …, the n +1 th water path switching valve arranged in the n +1 th water path, and then entering S100;
s100: igniting and burning the gas water heating equipment, and entering a preheating working mode;
wherein n is a natural number.
According to the invention, different preheating modes are set, and different water pump 1 gears are set to obtain different water pump powers so as to open the switch valves in part or all of the water channels, so that the instant circulating preheating of the selected water consumption point is realized, the preheating time is shortened, and the energy consumption is reduced.
Optionally, S100 is preceded by S10: and judging whether the real-time water inflow rate of the gas water heating equipment is greater than the preset starting flow rate or not, and if so, entering S100.
Optionally, in S10, if the real-time inflow water flow rate of the gas water heater is less than or equal to the preset startup flow rate, it indicates that an error occurs in the gas water heater at this time, and then the process goes to S20: the water pump 18 is turned off, and the gas water heating equipment is turned off and reports an error.
Optionally, the operating current of the water pump 18 is gradually increased from the first gear to the n +1 gear, and the valve sealing forces of the first water path switch valve M1, the second water path switch valve M2, the nth water path switch valve Mn and the n +1 th water path switch valve Mn +1 are sequentially increased and are arranged in one-to-one correspondence with the first gear to the n +1 gear of the water pump 18, so that when the switch valve Mn in the nth water path is opened, the switch valves Mn-1 to M1 in all the water paths in front of the nth water path can be opened.
Specifically, as shown in fig. 2, the gear of the water pump 18 increases with an increase in current, that is, the power (rotational speed) of the water pump 18 increases with an increase in current. That is, the gear of the water pump 18 can be increased by increasing the current of the water pump 18, and the power of the water pump 18 is increased, so that the gear size of the water pump 18 can be adjusted.
Referring to fig. 3 and 4, the present invention further provides a gas water heater apparatus for preheating by using the above preheating method, the gas water heater apparatus includes a gas water heater 1, a hot water path 2, a cold water path 3, a plurality of water consumption points, and a plurality of switch valves disposed in one-to-one correspondence with the plurality of water consumption points, the gas water heater 1 includes a water pump 18, a water inlet end of the hot water path 2 is communicated with a hot water outlet 12 of the gas water heater 1, a water outlet end of the hot water path 2 is communicated with the plurality of water consumption points, the cold water path 3 includes a gas water heater water supply path 31 and a water consumption point water supply path, the gas water heater water supply path 31 is communicated with a cold water inlet 11 of the gas water heater 1, the water consumption point water supply path 32 is communicated with the plurality of water consumption points, the water pump 18 is communicated with the gas water heater water supply path 31, the water pump is capable of delivering water in the cold water path 3 and the hot water path 2 to the gas water heater water supply path 31, referring to fig. 3, fig. 3 shows a schematic connection mode of a gas water heating apparatus having three water consumption points and the above structure, specifically, the three water consumption points are a first water consumption point 100, a second water consumption point 200 and a third water consumption point 300, respectively, wherein the first water consumption point 100 is provided with a first water path switch valve M1, the second water consumption point 200 is provided with a second water path switch valve M2, and the third water consumption point is provided with a third water path switch valve M3.
Or, in another embodiment, the gas water heater further includes a water return waterway 4, a water inlet end of the water return waterway 4 is communicated with the water return outlet 10 of the gas water heater 1, and a water outlet end of the water return waterway 4 is arranged in parallel with the plurality of water consumption point hot water inlets and the plurality of water consumption point cold water inlets, in this structure, the plurality of water consumption point clock switch valves are arranged as follows: referring to fig. 4, fig. 4 shows a schematic connection mode of a gas water heating apparatus having three local water consumption points, specifically, the three water consumption points are also a first water consumption point 100, a second water consumption point 200 and a third water consumption point 300, respectively, wherein the first water consumption point 100 is also provided with a first water consumption switch valve M1, the second water consumption point 200 is also provided with a second water consumption switch valve M2, and the third water consumption point 300 is also provided with a third water consumption switch valve M3.
Optionally, the on-off valve is a one-way valve to prevent reverse flow of water.
Optionally, the gas water heater 1 further comprises a water pipe 13, a combustion heat exchange system 14 and a flow sensing device 16. One end of the water pipe 13 is communicated with the cold water inlet 11, and the other end is communicated with the hot water outlet 12. The middle part of the water pipe 13 passes through the combustion heat exchange system 14, and the combustion heat exchange system 14 heats the water in the water pipe 13. The flow sensing device 16 is disposed at an end of the water pipe 13 close to the cold water inlet 11, and is used for detecting a real-time water inlet flow of the water pipe 13.
Optionally, the gas water heater 1 further comprises a gas supply structure, a controller 17 and an operator 15. The gas supply structure is connected with the combustion heat exchange system 14 and is used for supplying gas to the combustion heat exchange system 14. The flow sensing device 16 and the gas supply structure are both in communication with a controller 17. The manipulator 15 is in communication with a controller 17, and a user can select the preheating mode and adjust the air supply amount of the air supply structure through the manipulator 15.
Optionally, the manipulator 15 includes a preheat mode button and a thermostat button. The preheat mode button is used to select a preheat mode. The temperature adjusting button is used for adjusting the temperature of the water heater so as to adjust the heating temperature of the combustion heat exchange system 14 to the water in the water pipe 13.
Optionally, the gas supply arrangement comprises a gas supply system and a gas valve. The combustion heat exchange system 14 is communicated with an external gas pipeline through a gas supply system. The gas valve is arranged on the gas supply system and is in communication connection with the controller 17, and the gas valve is opened and closed according to the real-time flow detected by the flow sensing device 16 and is adjusted in opening degree according to preset temperature information provided by the temperature adjusting button.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A preheating method of a gas water heating device is characterized by comprising the following steps:
s1: the gas water heating equipment is in a common mode;
s2: selecting a preheating mode;
s3: judging whether a first mode is selected, if the first mode is selected, starting a water pump (18) of the gas water heating equipment at a first gear to open a first water path switch valve M1 arranged in a first water path, and then entering S100, and if the first mode is not selected, entering S4;
s4: judging whether a second mode is selected, if the second mode is selected, turning on the water pump (18) of the gas water heater device at a gear position two to open the first water path switch valve M1 and a second water path switch valve M2 arranged in a second water path, and then entering S100, and if the second mode is not selected, entering S5;
……
sn: judging whether an nth mode is selected, if the nth mode is selected, starting the water pump (18) of the gas water heating equipment at a gear n to open a first water path switching valve M1, a second water path switching valve M2 … … and an nth water path switching valve Mn arranged in an nth water path, and then entering S100, if the nth mode is not selected, entering Sn + 1;
sn + 1: judging whether an n +1 th mode is selected, if the n +1 th mode is selected, starting the water pump (18) on the gas hot water at a gear n +1 to open a first water path switching valve M1, second water path switching valves M2 and … … and an n +1 th water path switching valve arranged in an n +1 th water path, and then entering S100;
s100: igniting and burning the gas water heating equipment, and entering a preheating working mode;
wherein n is a natural number.
2. The preheating method of a gas-fired water heating apparatus according to claim 1, wherein the S100 is preceded by S10: and judging whether the real-time water inflow rate of the gas water heating equipment is greater than a preset starting flow rate or not, and if so, entering S100.
3. The preheating method of the gas-fired water heating apparatus according to claim 2, wherein in the step S10, if the real-time water inlet flow rate of the gas-fired water heating apparatus is less than or equal to the preset starting-up flow rate, the method proceeds to step S20: and the water pump (18) is turned off, and the gas water heating equipment is turned off and reports an error.
4. The preheating method of a gas-fired water heating apparatus according to any one of claims 1 to 3, wherein the operating current of the water pump (18) is increased stepwise from the first gear to the n +1 gear, and the valve closing forces of the first water passage switching valve M1, the second water passage switching valve M2, the n-th water passage switching valve Mn, and the n + 1-th water passage switching valve Mn +1 are sequentially increased and provided in one-to-one correspondence with the first gear to the n +1 gear of the water pump (18).
5. A gas water heater device, characterized in that the preheating method is adopted for preheating according to any one of claims 1 to 4, the gas water heater device comprises a gas water heater (1), a hot water waterway (2), a cold water waterway (3), a plurality of water consumption points and a plurality of switch valves arranged in one-to-one correspondence with the plurality of water consumption points, the gas water heater (1) comprises a water pump (18), the water inlet end of the hot water waterway (2) is communicated with a hot water outlet (12) of the gas water heater (1), the water outlet end of the hot water waterway (2) is communicated with the plurality of water consumption points, the cold water waterway (3) comprises a gas water heater water supply waterway (31) and a water consumption point water supply waterway (32), the gas water heater water supply waterway (31) is communicated with a cold water inlet (11) of the gas water heater (1), and the water consumption point water supply pipeline (32) is communicated with the plurality of water consumption points, the water pump (18) is communicated with the water supply waterway (31) of the gas water heater, the water pump (18) can send water in the cold water waterway (3) and the hot water waterway (2) to the water supply waterway (31) of the gas water heater, and the switch valves are arranged at two ends of a water consumption point hot water inlet and a water consumption point cold water inlet of the water consumption point in parallel; or the gas water heater also comprises a water return waterway (4), wherein the water inlet end of the water return waterway (4) is communicated with a water return outlet (10) of the gas water heater (1), the water outlet end of the water return waterway (4) is connected with a plurality of water consumption point hot water inlets and water consumption point cold water inlets in parallel, and in the structure, the switch valves in the water consumption points are arranged as follows: the switch valves are installed in parallel at the two ends of the water return waterway (4) and the water consumption point hot water inlet.
6. The gas-fired water heating apparatus according to claim 5, wherein said on-off valve is a one-way valve.
7. The gas-fired water heating apparatus according to claim 5, characterized in that the gas water heater (1) further comprises:
a water pipe (13) having one end communicating with the cold water inlet (11) and the other end communicating with the hot water outlet (12);
the middle part of the water pipe (13) passes through the combustion heat exchange system (14), and the combustion heat exchange system (14) heats water in the water pipe (13);
and the flow sensing device (16) is arranged at one end, close to the cold water inlet (11), of the water pipe (13) and used for detecting the real-time water inflow flow of the water pipe (13).
8. The gas-fired water heating apparatus according to claim 7, characterized in that the gas water heater (1) further comprises:
the gas supply structure is connected with the combustion heat exchange system (14) and is used for supplying gas to the combustion heat exchange system (14);
the controller (17), the flow sensing device (16) and the air supply structure are in communication connection with the controller (17);
a controller (15) communicatively connected to the controller (17) and by means of which a user can select a preheating mode and adjust the air supply quantity of the air supply structure.
9. The gas-fired hot water appliance according to claim 8, characterized in that the manipulator (15) comprises:
a preheating mode button for selecting a preheating mode;
and the temperature adjusting button is used for adjusting the temperature of the water heater so as to adjust the heating temperature of the combustion heat exchange system (14) to the water in the water pipe (13).
10. The gas-fired water heating apparatus according to claim 9, wherein the gas supply structure comprises:
the combustion heat exchange system (14) is communicated with an external gas pipeline through the gas supply system;
the gas valve is arranged on the gas supply system and is in communication connection with the controller (17), and the gas valve is opened and closed according to the real-time flow detected by the flow sensing device (16) and is adjusted in opening degree according to preset temperature information provided by the temperature adjusting button.
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| CN202110709657.5A CN113587437A (en) | 2021-06-25 | 2021-06-25 | Preheating method of gas water heating equipment and gas water heating equipment |
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| CN202110709657.5A CN113587437A (en) | 2021-06-25 | 2021-06-25 | Preheating method of gas water heating equipment and gas water heating equipment |
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| CN107036296A (en) * | 2017-05-06 | 2017-08-11 | 广东万家乐燃气具有限公司 | Multifunctional central gas heater and its control system |
| CN208012069U (en) * | 2018-03-05 | 2018-10-26 | 广东万和新电气股份有限公司 | Gas heater and apply its water route pipe network |
| CN109612118A (en) * | 2018-12-17 | 2019-04-12 | 成都前锋电子有限责任公司 | A kind of zero cold water burnt gas wall hanging furnace heating system of wireless remote-control with solenoid valve |
| CN110671824A (en) * | 2019-09-20 | 2020-01-10 | 华帝股份有限公司 | Zero cold water control system and method |
| CN112629034A (en) * | 2020-12-02 | 2021-04-09 | 华帝股份有限公司 | Remote control's zero cold water preheats temperature control system fast |
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Application publication date: 20211102 |