CN110793187A - Gas water heating system and control method thereof - Google Patents
Gas water heating system and control method thereof Download PDFInfo
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- CN110793187A CN110793187A CN201911250457.7A CN201911250457A CN110793187A CN 110793187 A CN110793187 A CN 110793187A CN 201911250457 A CN201911250457 A CN 201911250457A CN 110793187 A CN110793187 A CN 110793187A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000010438 heat treatment Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 206
- 230000008878 coupling Effects 0.000 claims abstract description 45
- 238000010168 coupling process Methods 0.000 claims abstract description 45
- 238000005859 coupling reaction Methods 0.000 claims abstract description 45
- 238000002485 combustion reaction Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000009969 flowable effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 53
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 25
- 239000003546 flue gas Substances 0.000 abstract description 25
- 238000009833 condensation Methods 0.000 abstract description 6
- 230000005494 condensation Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 2
- 239000008236 heating water Substances 0.000 description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000000779 smoke Substances 0.000 description 5
- 230000001808 coupling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
- F24H1/124—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 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
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/139—Continuous flow heaters
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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
-
- 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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- 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)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a gas water heating system and a control method thereof, wherein the gas water heating system comprises: a combustion device; the main heat exchange device is arranged on one side of the combustion device and can exchange heat with the combustion device; the main liquid return pipe is connected to the liquid inlet end of the main heat exchange device; the main liquid outlet pipe is connected to the liquid outlet end of the main heat exchange device; and the coupling structure is used for connecting the main liquid return pipe and the main liquid outlet pipe, and partial liquid in one of the main liquid return pipe and the main liquid outlet pipe can flow to the other one of the main liquid return pipe and the main liquid outlet pipe through the coupling structure. Above-mentioned gas hot water system, through the coupling structure, utilize the liquid in the main liquid return pipe to change the temperature difference of the liquid of the exit end outflow of liquid and main drain pipe among the main heat transfer device to make the liquid among the main heat transfer device maintain higher temperature, and then make the flue gas with the heat transfer of main heat transfer device keep higher temperature and difficult condensation, avoid the flue gas condensation and corrode main heat transfer device's purpose when improving gas hot water system's thermal efficiency.
Description
Technical Field
The invention relates to the field of heating equipment, in particular to a gas hot water system and a control method thereof.
Background
The gas heating water heater as a heating device for providing hot water and heating heat by natural gas is more and more accepted by the users, and becomes an important component of heating in cold regions. When the gas heating water heater is in heating operation, when a user needs to quickly raise the room temperature, the water outlet temperature and the system circulation flow of the gas heating water heater need to be increased, and at the moment, the gas heating water heater is in a large load state. When the room temperature reaches the required value, the water outlet temperature and the circulation flow of the gas heating water heater need to be reduced, and the gas heating water heater is in a small load state.
However, the inventor of the present invention found in research that the non-condensing gas-fired heating water heater on the market has a phenomenon that the difference between the minimum load and the maximum load is more than 8% in terms of thermal efficiency, the thermal efficiency of the heating water heater at the maximum load is about 93%, and the thermal efficiency of the heating water heater at the small load is about 85%, so that energy is wasted, and the root cause of the low thermal efficiency of the heating water heater at the small load is that when the gas-fired heating water heater is at the small load, a large amount of heat is taken away by the discharged flue gas. In the heating operation process, the gas heating water heater is in a small load state most of the time, so that the heat efficiency in the small load state is improved, and the energy waste can be effectively reduced.
At present, the heat efficiency of a gas heating water heater is generally increased by adopting the following two schemes, wherein one scheme is to increase the heat exchange capacity of a main heat exchanger and reduce the temperature of smoke generated by combustion so as to reduce heat loss, and the other scheme is to reduce the excess air coefficient and reduce the smoke volume.
However, according to the first embodiment, the temperature of the flue gas is lowered, and the combustion power of the burner is low and the amount and temperature of the flue gas are low in a state where the heating water heater is under a low load and a low water temperature, because the temperature of the flue gas easily reaches the dew point temperature (the dew point temperature of the flue gas is the temperature at which the water vapor in the high-temperature flue gas starts to condense). By adopting the second scheme, the excess air is reduced, the dew point temperature of the smoke is increased, and the smoke temperature can easily reach the dew point temperature when the heating water heater is under a small load. After the combustion, partial smoke is condensed on the main heat exchanger, so that the main heat exchanger is corroded, and the service life of the heating water heater is finally shortened.
Disclosure of Invention
Therefore, it is necessary to provide a gas hot water system having a high heat exchange efficiency under a low load condition and a control method thereof, in order to solve the problem that the heating water heater has a low heat exchange efficiency under a low load condition.
A gas fired water heating system, comprising:
a combustion device;
the main heat exchange device is arranged on one side of the combustion device and can exchange heat with the combustion device;
the main liquid return pipe is connected to the liquid inlet end of the main heat exchange device;
the main liquid outlet pipe is connected to the liquid outlet end of the main heat exchange device; and
a coupling structure connecting the main liquid return pipe and the main liquid outlet pipe, wherein part of liquid in one of the main liquid return pipe and the main liquid outlet pipe can flow to the other one through the coupling structure.
Above-mentioned gas hot water system, through the coupling structure, utilize the liquid in the main liquid return pipe to change the temperature difference of the liquid of the exit end outflow of liquid and main drain pipe among the main heat transfer device to make the liquid among the main heat transfer device maintain higher temperature, and then make the flue gas with the heat transfer of main heat transfer device keep higher temperature and difficult condensation, avoid the flue gas condensation and corrode main heat transfer device's purpose when improving gas hot water system's thermal efficiency.
In one embodiment, when the gas water heating system is in a low-load state, part of liquid in the main liquid return pipe flows to the main liquid outlet pipe through the coupling structure.
In one embodiment, when the gas-fired hot water system is in a non-light load state, part of liquid in the main liquid outlet pipe can flow to the main liquid return pipe through the coupling structure.
In one embodiment, the gas water heating system comprises a liquid return flow adjusting unit with adjustable flow and a liquid outlet flow adjusting unit with adjustable flow, the liquid return flow adjusting unit is located between the main heat exchange device and the coupling structure, and the liquid outlet flow adjusting unit is located between the coupling structure and the outlet end of the main liquid return pipe.
In one embodiment, when the gas hot water system is in a low-load state, the flow of the liquid return flow regulating unit is smaller than that of the liquid outlet flow regulating unit.
In one embodiment, when the gas hot water system is in a non-small load state, the flow of the liquid return flow regulating unit is greater than or equal to the flow of the liquid outlet flow regulating unit.
A control method of the gas water heating system comprises the following steps:
acquiring the load state of a gas hot water system;
and controlling the liquid flow state in the coupling structure of the gas hot water system according to the load state.
In one embodiment, when the gas water heating system is in a low-load state, part of liquid in the main liquid return pipe is controlled to flow to the main liquid outlet pipe through the coupling structure.
In one embodiment, when the gas-fired hot water system is in a non-light load state, part of liquid in the main liquid outlet pipe is controlled to flow to the main liquid return pipe through the coupling structure.
In one embodiment, the gas-fired water heating system includes a liquid return flow rate adjusting unit located between the main heat exchange device and the coupling structure and a liquid outlet flow rate adjusting unit located between the coupling structure and the outlet end of the main liquid outlet pipe, and the step of controlling the liquid flow state in the coupling structure of the gas-fired water heating system according to the load state specifically includes the following steps:
and controlling the flow of the liquid return flow regulating unit and the flow of the liquid outlet flow regulating unit according to the load state so as to regulate the liquid flowing state in the coupling structure of the gas hot water system.
In one embodiment, when the gas hot water system is in a low-load state, the flow of the liquid return flow regulating unit is controlled to be smaller than the flow of the liquid outlet flow regulating unit.
In one embodiment, when the gas hot water system is in a non-small load state, the flow of the liquid return flow regulating unit is controlled to be larger than or equal to the flow of the liquid outlet flow regulating unit.
Drawings
FIG. 1 is a schematic view of a gas fired water heating system according to an embodiment of the present invention;
fig. 2 is a flow coupling effect diagram of the coupling structure of the gas hot water system shown in fig. 1 when the flow of the backflow flow regulating unit is smaller than the flow of the liquid outlet flow regulating unit;
FIG. 3 is a flow coupling effect diagram of the coupling structure of the gas water heating system shown in FIG. 1 when the flow of the backflow flow regulating unit is equal to the flow of the liquid outlet flow regulating unit;
fig. 4 is a flow coupling effect diagram of the coupling structure of the gas hot water system shown in fig. 1 when the flow of the backflow flow regulating unit is greater than the flow of the liquid outlet flow regulating unit;
fig. 5 is a schematic view illustrating a control method of the gas-fired hot water system shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a gas-fired hot water system 100 according to an embodiment of the present invention may obtain hot water by using heat generated by burning natural gas. The structure of the medium gas water heating system 100 according to the present application will be described below by taking the gas water heating system 100 as a gas heating furnace system as an example. The present embodiment is described as an example, and the technical scope of the present application is not limited thereto. It is understood that, in other embodiments, the gas hot water system 100 may also be embodied as a gas water heater system, etc., and is not limited herein.
Specifically, the gas-fired hot water system 100 includes a control device (not shown), a combustion device 10, a main heat exchange device 20, a main liquid outlet pipe 40, a heating pipe (not shown), and a main liquid return pipe 30. The main heat exchange device 20 is disposed on one side of the combustion device 10, and the main heat exchange device 20 can exchange heat with the combustion device 10 to obtain heat of high-temperature flue gas generated by combustion of the combustion device 10.
Thus, under the control of the control device, the natural gas is combusted in the combustion device 10, the high-temperature flue gas generated by combustion can exchange heat with the liquid in the main heat exchange device 20, the liquid after heat exchange flows out of the main heat exchange device 20 through the main liquid outlet pipe 40, flows into each room through the heating pipe to exchange heat with the air in the room so as to heat each room, and finally the liquid after heat exchange returns to the main heat exchange device 20 through the main liquid return pipe 30.
Referring to fig. 1, the inlet end of the main liquid return pipe 30 is connected to the outlet end of the heating pipe, the outlet end of the main liquid return pipe 30 is connected to the liquid inlet end of the main heat exchanger 20, and the main liquid return pipe 30 can re-convey the liquid after heat exchange between the air and the heating pipe to the main heat exchanger 20. The inlet end of the main liquid outlet pipe 40 is connected to the liquid outlet end of the main heat exchange device 20, the outlet end of the main liquid outlet pipe 40 is connected to the inlet end of the heating pipe, and the main liquid outlet pipe 40 can convey liquid, which exchanges heat with high-temperature flue gas in the main heat exchange device 20, to the heating pipe so as to exchange heat with air.
The gas-fired hot water system 100 further comprises a coupling structure 50, a flow-adjustable liquid-returning flow-adjusting unit 60 and a flow-adjustable liquid-discharging flow-adjusting unit 70. The coupling structure 50 connects the main liquid return pipe 30 and the main liquid outlet pipe 40, the liquid return flow rate adjusting unit 60 is located between the main heat exchange device 20 and the coupling structure 50, and the liquid outlet flow rate adjusting unit 70 is located between the coupling structure 50 and the outlet end of the main liquid outlet pipe 40.
Thus, the flow of the liquid return flow adjusting unit 60 and the liquid outlet flow adjusting unit 70 can be adjusted, so that the liquid in one of the main liquid return pipe 30 and the main liquid outlet pipe 40 flows to the other through the coupling structure 50, the temperature difference between the liquid in the main heat exchange device 20 and the liquid flowing out from the outlet end of the main liquid outlet pipe 40 is changed by the liquid in the main liquid return pipe 30, the liquid in the main heat exchange device 20 is maintained at a higher temperature, the flue gas exchanging heat with the main heat exchange device 20 is kept at a higher temperature and is not easy to condense, and the purpose of preventing the flue gas from condensing and corroding the main heat exchange device 20 while improving the heat efficiency of the gas water heating system 100 is achieved.
In some embodiments, the liquid-returning flow-rate adjusting unit 60 and the liquid-discharging flow-rate adjusting unit 70 are both flow pumps, and the control device can adjust the flow rate of the flow pumps according to needs.
In some embodiments, the main liquid return pipe 30 and the main liquid outlet pipe 40 are further installed with temperature sensors to monitor the liquid temperature, and one end of the main liquid outlet pipe 40 close to the main heat exchange device 20 is further installed with a temperature limiter, which can shut down the gas water heating system 100 when the liquid temperature in the main liquid outlet pipe 40 is too high, so as to prevent the circulating liquid of the gas water heating system 100 from being gasified due to too high temperature. It is understood that the temperature limiter is not limited to the above-mentioned mounting position, and may be mounted at other positions of the main liquid return pipe 30 or the main liquid outlet pipe 40.
As shown in fig. 5, the control method of the gas-fired water heating system 100 includes the following steps:
s110: the load state of the gas fired water heating system 100 is obtained.
Specifically, the gas hot water system 100 has two load states, a small load state and a non-small load state, and the non-small load state includes any other load state such as a large load state other than the small load state. Specifically, in one embodiment, the light load condition is that the combustion power of the combustion apparatus 10 is less than or equal to 30% of the maximum combustion power of the combustion apparatus 10, and the temperature of the liquid flowing out of the outlet end of the main outlet pipe 40 is 20 ℃ to 45 ℃.
S120: the liquid flow state in the coupling structure 50 of the gas hot water system 100 is controlled according to the load state.
Specifically, the control device controls the flow rate of the liquid outlet flow rate adjusting unit 70 and the flow rate of the liquid return flow rate adjusting unit 60 according to the load state to adjust the liquid flow state in the coupling structure 50 of the gas hot water system 100.
As shown in fig. 1 and 2, when the gas hot water system 100 is in a low load state, the control device controls the flow rate of the return liquid flow rate adjusting unit 60 to be smaller than the flow rate of the outlet liquid flow rate adjusting unit 70. Therefore, a part of the liquid in the main liquid return pipe 30 enters the main heat exchange device 20 through the backflow flow rate adjusting unit 60 to perform heat exchange with the flue gas to increase the temperature, and then flows into the main liquid outlet pipe 40, and another part of the liquid in the main liquid return pipe 30 flows to the main liquid outlet pipe 40 through the coupling structure 50 to be mixed with the liquid in the main liquid outlet pipe 40 output by the main heat exchange device 20.
Since the liquid flowing through the coupling structure 50 is not heated up in the main heat exchange device 20, the temperature of the liquid flowing out of the outlet end of the main liquid outlet pipe 40 is lower than that of the liquid in the main heat exchange device 20, so as to meet the preset outlet liquid temperature. Because the liquid in the main heat exchange device 20 is higher, the temperature of the flue gas is also relatively higher, so that the temperature of the flue gas is higher than the dew point temperature of the flue gas, and the flue gas is not easy to condense on the main heat exchange device 20. That is to say, this application utilizes the liquid in the main liquid return pipe 30 to reduce the play liquid temperature of main drain pipe 40 through coupling structure 50, and need not directly to reduce the liquid temperature in main heat transfer device 20 to guaranteed that the flue gas that takes place heat exchange with the liquid in main heat transfer device 20 has higher temperature.
As shown in fig. 1, 3 and 4, when the gas hot water system 100 is in a non-low load state, the control device controls the flow rate of the return liquid flow rate adjusting unit 60 to be greater than or equal to the flow rate of the outlet liquid flow rate adjusting unit 70.
Specifically, when the control device controls the flow rate of the backflow flow rate adjusting unit 60 to be greater than the flow rate of the liquid outlet flow rate adjusting unit 70, all liquid in the main liquid return pipe 30 enters the main heat exchanging device 20 to exchange heat and raise the temperature, the liquid after temperature rise flows into the main liquid outlet pipe 40 from the main heat exchanging device 20, a part of liquid in the main liquid outlet pipe 40 flows into the main liquid return pipe 30 through the coupling structure 50, and the other part of liquid in the main liquid outlet pipe 40 flows out of the outlet end of the main liquid outlet pipe 40. When the control device controls the flow rate of the backflow flow rate adjusting unit 60 to be equal to the flow rate of the liquid outlet flow rate adjusting unit 70, all liquid in the main liquid return pipe 30 enters the main heat exchange device 20 for heat exchange and temperature rise, and the heated liquid flows into the main liquid outlet pipe 40 from the main heat exchange device 20 and then flows out from the outlet end of the main liquid outlet pipe 40 through the liquid outlet flow rate adjusting unit 7.
Because the liquid flowing out of the outlet end of the main liquid outlet pipe 40 completely comes from the main heat exchange device 20, the temperature of the liquid in the main liquid outlet pipe 40 is equal to that of the liquid after heat exchange of the main heat exchange device 20, so that liquid vaporization caused by overhigh temperature of the liquid in the main heat exchange device 20 can be avoided.
According to the gas water heating system 100 and the control method thereof, as the main liquid return pipe 30 is connected with the main liquid outlet pipe 40 through the coupling structure 50, the flow of the liquid return flow regulating unit 60 and the liquid outlet flow regulating unit 70 can be regulated according to different load states, so that the difference between the liquid outlet temperature of the main liquid outlet pipe 40 and the liquid temperature in the main heat exchange device 20 is regulated, the gas water heating system 100 can reduce the discharge amount of flue gas, improve the heat exchange efficiency in a small load state by 12% -14%, improve the heat exchange efficiency in a large load state by 3% -5%, ensure that the flue gas has higher temperature, avoid the condensation of the flue gas caused by the reduction of the discharge amount of the flue gas, achieve the purposes of energy conservation and emission reduction, and prolong the service life of the gas water heating system 100. In addition, because the problem of condensation of the gas water heating system 100 in a low-load low-water-temperature state is solved, the adjusting range of the combustion power of the combustion device 10 can be expanded, the starting times of the gas water heating system 100 are reduced, the applicability of the gas water heating system 100 is expanded, different requirements of a user on heating are met, and the user experience is greatly improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A gas fired water heating system, comprising:
a combustion device (10);
the main heat exchange device (20) is arranged on one side of the combustion device (10), and the main heat exchange device (20) can exchange heat with the combustion device (10);
the main liquid return pipe (30) is connected to the liquid inlet end of the main heat exchange device (20);
the main liquid outlet pipe (40) is connected to the liquid outlet end of the main heat exchange device (20); and
a coupling structure (50) connecting the main liquid return pipe (30) and the main liquid outlet pipe (40), wherein part of the liquid in one of the main liquid return pipe (30) and the main liquid outlet pipe (40) can flow to the other through the coupling structure (50).
2. The gas fired water heating system according to claim 1, wherein a portion of the liquid in the main return pipe (30) flows through the coupling structure (50) to the main outlet pipe (40) when the gas fired water heating system is in a light load condition.
3. The gas fired water heating system according to claim 1, wherein a portion of the liquid in the main liquid outlet pipe (40) is flowable through the coupling structure (50) to the main liquid return pipe (30) when the gas fired water heating system is in a non-light load condition.
4. The gas-fired water heating system according to claim 1, comprising a flow-adjustable liquid return flow adjusting unit (60) and a flow-adjustable liquid outlet flow adjusting unit (70), wherein the liquid return flow adjusting unit (60) is located between the main heat exchanging device (20) and the coupling structure (50), and the liquid outlet flow adjusting unit (70) is located between the coupling structure (50) and the outlet end of the main liquid return pipe (30).
5. The gas-fired water heating system according to claim 4, wherein when the gas-fired water heating system is in a low load state, the flow rate of the liquid return flow rate adjusting unit (60) is smaller than the flow rate of the liquid outlet flow rate adjusting unit (70).
6. The gas water heating system according to claim 4, wherein when the gas water heating system is in a non-light load state, the flow of the liquid return flow regulating unit (60) is greater than or equal to the flow of the liquid outlet flow regulating unit (70).
7. A control method of the gas-fired water heating system according to any one of claims 1 to 6, comprising the steps of:
acquiring the load state of a gas hot water system;
controlling a liquid flow condition in a coupling structure (50) of the gas-fired hot water system in accordance with the load condition.
8. The gas fired water heating system according to claim 7, wherein when the gas fired water heating system is in a light load condition, a portion of the liquid in the main return pipe (30) is controlled to flow to the main outlet pipe (40) through the coupling structure (50).
9. The gas fired water heating system according to claim 7, wherein when the gas fired water heating system is in a non-light load condition, a portion of the liquid in the main liquid outlet pipe (40) is controlled to flow to the main liquid return pipe (30) through the coupling structure (50).
10. The gas water heating system according to claim 7, comprising a liquid return flow regulating unit (60) between the main heat exchanging device (20) and the coupling structure (50) and a liquid outlet flow regulating unit (70) between the coupling structure (50) and the outlet end of the main liquid outlet pipe (40), wherein the step of controlling the liquid flow state in the coupling structure (50) of the gas water heating system according to the load state comprises the following steps:
and controlling the flow of the liquid return flow regulating unit (60) and the flow of the liquid outlet flow regulating unit (70) according to the load state so as to regulate the liquid flowing state in the coupling structure (50) of the gas hot water system.
11. The gas-fired water heating system according to claim 10, wherein when the gas-fired water heating system is in a low load state, the flow rate of the liquid return flow rate adjusting unit (60) is controlled to be smaller than the flow rate of the liquid outlet flow rate adjusting unit (70).
12. The gas water heating system according to claim 10, wherein when the gas water heating system is in a non-light load state, the flow rate of the liquid return flow rate adjusting unit (60) is controlled to be greater than or equal to the flow rate of the liquid outlet flow rate adjusting unit (70).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250457.7A CN110793187B (en) | 2019-12-09 | 2019-12-09 | Gas water heating system and control method thereof |
| PCT/CN2020/111280 WO2021114726A1 (en) | 2019-12-09 | 2020-08-26 | Gas hot water system and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250457.7A CN110793187B (en) | 2019-12-09 | 2019-12-09 | Gas water heating system and control method thereof |
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| CN110793187A true CN110793187A (en) | 2020-02-14 |
| CN110793187B CN110793187B (en) | 2023-10-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114726A1 (en) * | 2019-12-09 | 2021-06-17 | 珠海格力电器股份有限公司 | Gas hot water system and control method therefor |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6401669B1 (en) * | 2001-04-19 | 2002-06-11 | Ibc Technologies | Condensing boiler |
| CN2781263Y (en) * | 2005-03-01 | 2006-05-17 | 河南省凯森燃气设备有限公司 | Condensation gas hot water and heating intelligent wall hanging heater |
| JP2006275309A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Ind Co Ltd | Hot-water supply heating device |
| CN101118127A (en) * | 2006-07-31 | 2008-02-06 | 海尔集团公司 | Full-premixing condensing type heating and hot water dual-purpose device |
| JP2008032328A (en) * | 2006-07-31 | 2008-02-14 | Shinryo Corp | Static type ice heat storage system |
| CN101151494A (en) * | 2005-03-07 | 2008-03-26 | （株）庆东Navien | Hot-water supply system having dual pipe |
| CN101430174A (en) * | 2008-12-12 | 2009-05-13 | 北京科技大学 | Method and apparatus for retarding scale formation of water heating boiler by utilizing reflux dilution turbulence |
| CN102032613A (en) * | 2009-09-30 | 2011-04-27 | 盛新东 | Dual-purpose water heating device capable of heating and heating water |
| CN103499120A (en) * | 2013-10-23 | 2014-01-08 | 山东淄博齐瑞泵业有限公司 | Non-negative pressure hot water direct supply unit |
| CN104633636A (en) * | 2013-11-15 | 2015-05-20 | 安阳市方快锅炉有限公司 | Saturated steam combined boiler and quick steam manufacturing method |
| KR20150137570A (en) * | 2014-05-30 | 2015-12-09 | 린나이코리아 주식회사 | Driving device and method a non-condensing of a boiler condensing |
| CN106016748A (en) * | 2016-07-28 | 2016-10-12 | 浙江双菱戴纳斯帝电气有限公司 | Low-nitrogen atmosphere type condensation wall-hanging stove |
| WO2017111636A1 (en) * | 2015-12-21 | 2017-06-29 | Aic S.A. | Fired heat exchanger |
| WO2017133241A1 (en) * | 2016-02-01 | 2017-08-10 | 艾欧史密斯(中国)热水器有限公司 | Gas water heating device, gas water heating system, gas water heater and water heating device |
| WO2018014769A1 (en) * | 2016-07-22 | 2018-01-25 | 京能（锡林郭勒）发电有限公司 | Flue gas condensation water extraction system |
| US20180058718A1 (en) * | 2012-09-21 | 2018-03-01 | Suzhou Cq Heat Exchanger Co., Ltd | Straight Fin Tube with Bended Fins Condensing Heat Exchanger |
| CN207936045U (en) * | 2018-03-02 | 2018-10-02 | 中国华电科工集团有限公司 | A kind of device of novel thermal power plant's low temperature heat and eliminating white smoke |
| CN108731269A (en) * | 2018-08-06 | 2018-11-02 | 珠海格力电器股份有限公司 | Anti-condensation gas wall-mounted furnace and anti-condensation method thereof |
| CN109059290A (en) * | 2018-07-20 | 2018-12-21 | 广东万和热能科技有限公司 | A kind of condensed type combustion gas is warm to bathe dual-purpose stove and its control method |
| CN109489241A (en) * | 2018-11-29 | 2019-03-19 | 艾欧史密斯(中国)热水器有限公司 | Gas-fired water heater and its control method |
| CN208687994U (en) * | 2018-08-24 | 2019-04-02 | 江苏富特斯智能设备有限公司 | Split type gas thermal power plant unit |
| CN209445584U (en) * | 2018-09-07 | 2019-09-27 | 浙江广涛卫厨有限公司 | Gas-heating water heater structure |
| CN211503219U (en) * | 2019-12-09 | 2020-09-15 | 珠海格力电器股份有限公司 | Gas water heating system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769553A (en) * | 2008-12-30 | 2010-07-07 | 张明亮 | Circulating water heating system of secondary pump |
| CN205119226U (en) * | 2015-10-28 | 2016-03-30 | 北京建筑大学 | Weather compensation arrangement based on heat supply load demand |
| CN108645008A (en) * | 2018-06-28 | 2018-10-12 | 艾沃（深圳）智能环境科技有限公司 | A kind of tool mixes the heating hot water furnace apparatus of water function |
| CN109737605B (en) * | 2019-02-28 | 2021-05-04 | 中山市樱雪集团有限公司 | Zero-cold-water preheating device for gas heating water heater and control method thereof |
| CN110793187B (en) * | 2019-12-09 | 2023-10-31 | 珠海格力电器股份有限公司 | Gas water heating system and control method thereof |
-
2019
- 2019-12-09 CN CN201911250457.7A patent/CN110793187B/en active Active
-
2020
- 2020-08-26 WO PCT/CN2020/111280 patent/WO2021114726A1/en active Application Filing
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6401669B1 (en) * | 2001-04-19 | 2002-06-11 | Ibc Technologies | Condensing boiler |
| CN2781263Y (en) * | 2005-03-01 | 2006-05-17 | 河南省凯森燃气设备有限公司 | Condensation gas hot water and heating intelligent wall hanging heater |
| CN101151494A (en) * | 2005-03-07 | 2008-03-26 | （株）庆东Navien | Hot-water supply system having dual pipe |
| JP2006275309A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Ind Co Ltd | Hot-water supply heating device |
| CN101118127A (en) * | 2006-07-31 | 2008-02-06 | 海尔集团公司 | Full-premixing condensing type heating and hot water dual-purpose device |
| JP2008032328A (en) * | 2006-07-31 | 2008-02-14 | Shinryo Corp | Static type ice heat storage system |
| CN101430174A (en) * | 2008-12-12 | 2009-05-13 | 北京科技大学 | Method and apparatus for retarding scale formation of water heating boiler by utilizing reflux dilution turbulence |
| CN102032613A (en) * | 2009-09-30 | 2011-04-27 | 盛新东 | Dual-purpose water heating device capable of heating and heating water |
| US20180058718A1 (en) * | 2012-09-21 | 2018-03-01 | Suzhou Cq Heat Exchanger Co., Ltd | Straight Fin Tube with Bended Fins Condensing Heat Exchanger |
| CN103499120A (en) * | 2013-10-23 | 2014-01-08 | 山东淄博齐瑞泵业有限公司 | Non-negative pressure hot water direct supply unit |
| CN104633636A (en) * | 2013-11-15 | 2015-05-20 | 安阳市方快锅炉有限公司 | Saturated steam combined boiler and quick steam manufacturing method |
| KR20150137570A (en) * | 2014-05-30 | 2015-12-09 | 린나이코리아 주식회사 | Driving device and method a non-condensing of a boiler condensing |
| WO2017111636A1 (en) * | 2015-12-21 | 2017-06-29 | Aic S.A. | Fired heat exchanger |
| WO2017133241A1 (en) * | 2016-02-01 | 2017-08-10 | 艾欧史密斯(中国)热水器有限公司 | Gas water heating device, gas water heating system, gas water heater and water heating device |
| WO2018014769A1 (en) * | 2016-07-22 | 2018-01-25 | 京能（锡林郭勒）发电有限公司 | Flue gas condensation water extraction system |
| CN106016748A (en) * | 2016-07-28 | 2016-10-12 | 浙江双菱戴纳斯帝电气有限公司 | Low-nitrogen atmosphere type condensation wall-hanging stove |
| CN207936045U (en) * | 2018-03-02 | 2018-10-02 | 中国华电科工集团有限公司 | A kind of device of novel thermal power plant's low temperature heat and eliminating white smoke |
| CN109059290A (en) * | 2018-07-20 | 2018-12-21 | 广东万和热能科技有限公司 | A kind of condensed type combustion gas is warm to bathe dual-purpose stove and its control method |
| CN108731269A (en) * | 2018-08-06 | 2018-11-02 | 珠海格力电器股份有限公司 | Anti-condensation gas wall-mounted furnace and anti-condensation method thereof |
| CN208687994U (en) * | 2018-08-24 | 2019-04-02 | 江苏富特斯智能设备有限公司 | Split type gas thermal power plant unit |
| CN209445584U (en) * | 2018-09-07 | 2019-09-27 | 浙江广涛卫厨有限公司 | Gas-heating water heater structure |
| CN109489241A (en) * | 2018-11-29 | 2019-03-19 | 艾欧史密斯(中国)热水器有限公司 | Gas-fired water heater and its control method |
| CN211503219U (en) * | 2019-12-09 | 2020-09-15 | 珠海格力电器股份有限公司 | Gas water heating system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114726A1 (en) * | 2019-12-09 | 2021-06-17 | 珠海格力电器股份有限公司 | Gas hot water system and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110793187B (en) | 2023-10-31 |
| WO2021114726A1 (en) | 2021-06-17 |
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