CN110926020A - Double-loop heat supply gas water heater - Google Patents
Double-loop heat supply gas water heater Download PDFInfo
- Publication number
- CN110926020A CN110926020A CN201911262735.0A CN201911262735A CN110926020A CN 110926020 A CN110926020 A CN 110926020A CN 201911262735 A CN201911262735 A CN 201911262735A CN 110926020 A CN110926020 A CN 110926020A
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- Prior art keywords
- heat exchanger
- main heat
- low
- gas
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000008236 heating water Substances 0.000 claims description 7
- 239000008399 tap water Substances 0.000 claims description 7
- 235000020679 tap water Nutrition 0.000 claims description 7
- 239000002737 fuel gas Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 4
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 208000001408 Carbon monoxide poisoning Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- F24H1/48—Water heaters for central heating incorporating heaters for domestic water
- F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
-
- 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
- F24H9/0005—Details for water heaters
-
- 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
-
- 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
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)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention relates to the technical field of household water heaters, in particular to a double-loop heat supply gas water heater. The low-nitrogen gas pre-cooling device comprises a shell, and a discharge flue, a condensation heat exchanger, a fan, a main heat exchanger, a low-nitrogen burner, a pre-cooling pipe, a gas proportion control valve and a controller which are arranged in the shell; the discharge flue is arranged at the upper part of the shell, and the interior of the discharge flue is communicated with the condensing heat exchanger; the main heat exchanger is arranged at the upper part of the low-nitrogen combustor, and the fan is arranged at the top of the main heat exchanger and communicated with the discharge flue and the interior of the main heat exchanger; the pre-cooling pipe is arranged outside the low-nitrogen combustor, and the condensation heat exchanger, the pre-cooling pipe and the main heat exchanger are connected through pipelines; the inside some firearm that is equipped with of low nitrogen combustor, the gas proportional control valve passes through the tube coupling with the low nitrogen combustor, be equipped with methane concentration sensor between gas proportional control valve and the low nitrogen combustor, methane concentration sensor, gas proportional control valve and firearm are connected with the controller electricity respectively.
Description
Technical Field
The invention relates to the technical field of household water heaters, in particular to a double-loop heat supply gas water heater.
Background
The gas water heater is a gas appliance which takes gas such as natural gas as fuel and transfers energy to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. The gas water heater can be used immediately without waiting, the occupied area is small, the heat load of the gas water heater is large, the requirement that a plurality of people use a large amount of hot water can be met, and the gas water heater (or wall-mounted boiler) can be used for heating in areas without central heating in the south and the like, so that the living condition is improved.
Under the normal working condition of a common gas water heater, the heat loss brought away by smoke is large, the index of pollutant emission is high, and the heat efficiency is high under the condition of low heat load. The exhaust gas temperature of a common gas water heater is generally close to 200 ℃ or above 200 ℃, so that great energy waste is caused, and the heat efficiency of the gas water heater is lowered.
Disclosure of Invention
The invention aims to solve the technical problem and provides a double-loop heat supply gas water heater aiming at the technical defects, wherein two heat exchange loops are adopted to exchange heat better, the temperature of discharged flue gas is reduced, and a low nitrogen oxide discharge design is adopted.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a double-loop heat supply gas water heater comprises a shell, and a discharge flue, a condensation heat exchanger, a fan, a main heat exchanger, a low-nitrogen burner, a precooling pipe, a gas proportion control valve and a controller which are arranged in the shell; the discharge flue is arranged at the upper part of the shell, and the interior of the discharge flue is communicated with the condensing heat exchanger; the main heat exchanger is arranged at the upper part of the low-nitrogen combustor, and the fan is arranged at the top of the main heat exchanger and communicated with the discharge flue and the interior of the main heat exchanger; the pre-cooling pipe is arranged outside the low-nitrogen combustor, and the condensation heat exchanger, the pre-cooling pipe and the main heat exchanger are connected through pipelines; the inside some firearm that is equipped with of low nitrogen combustor, the gas proportional control valve passes through the tube coupling with the low nitrogen combustor, be equipped with methane concentration sensor between gas proportional control valve and the low nitrogen combustor, methane concentration sensor, gas proportional control valve and firearm are connected with the controller electricity respectively.
Further optimize this technical scheme, be equipped with the wind pressure switch on the fan, fan and wind pressure switch are connected with the controller electricity respectively.
Further optimize this technical scheme, double-circuit heat supply gas heater still includes circulating pump, water pressure gauge, display screen and input button, be equipped with air relief valve on the circulating pump, display screen and input button are connected with the controller electricity respectively.
The technical scheme is further optimized, the water inlet of the circulating pump is communicated with the heating water return interface, the main heat exchanger is communicated with the tap water interface and the domestic hot water interface respectively, the main heat exchanger is communicated with the water outlet of the circulating pump and the heating hot water interface respectively, and the main heat exchanger, the condensing heat exchanger and the precooling pipe are arranged in parallel.
Further optimize this technical scheme, be equipped with the rivers sensor on the pipeline between running water interface and the main heat exchanger, the rivers sensor is connected with the controller electricity.
Compared with the prior art, the invention has the following advantages: 1. the condensation heat exchanger is arranged outside the main heat exchanger, so that the structure is favorable for effectively utilizing the heat in the discharged flue gas and improving the efficiency; 2. the pre-cooling pipe is arranged outside the low-nitrogen combustor, so that the structure is favorable for ensuring that the temperature of combustion flame is lower, and the emission of nitrogen oxides can be reduced; 3. the methane concentration sensor is arranged, so that the structure is favorable for ensuring that the mixing ratio of fuel gas and air can be automatically adjusted, low-oxygen combustion is realized, and the emission of nitrogen oxides is reduced; 4. the display screen and the input keys are arranged, and the structure is favorable for ensuring that the running state of the device can be visually displayed and is convenient and fast to adjust.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic bottom view of the present invention.
Fig. 3 is a schematic view of the direction of water flow in the heating water circuit.
In the figure: 1. a housing; 2. a discharge flue; 3. a condensing heat exchanger; 4. a fan; 5. a primary heat exchanger; 6. a low-nitrogen burner; 7. a pre-cooling tube; 8. a gas proportional control valve; 9. a controller; 10. a circulation pump; 11. a water pressure gauge; 12. a display screen; 13. inputting a key; 14. a gas interface; 15. a tap water interface; 16. a heating water return interface; 17. a domestic hot water interface; 18. heating hot water interface.
Detailed Description
The specific implementation mode is as follows: referring to fig. 1-3, the double-loop heat supply gas water heater of the invention comprises a shell 1, a discharge flue 2 arranged in the shell 1, a condensing heat exchanger 3, a fan 4, a main heat exchanger 5, a low-nitrogen burner 6, a precooling pipe 7, a gas proportion control valve 8 and a controller 9; the discharge flue 2 is arranged at the upper part of the shell 1, and the interior of the discharge flue 2 is communicated with the condensing heat exchanger 3; the main heat exchanger 5 is arranged at the upper part of the low-nitrogen combustor 6, and the fan 4 is arranged at the top of the main heat exchanger 5 and communicated with the discharge flue 2 and the interior of the main heat exchanger 5; the pre-cooling pipe 7 is arranged outside the low-nitrogen combustor 6, and the condensing heat exchanger 3, the pre-cooling pipe 7 and the main heat exchanger 5 are connected through pipelines; 6 inside igniters that are equipped with of low-nitrogen combustor, gas proportional control valve 8 passes through the tube coupling with low-nitrogen combustor 6, be equipped with methane concentration sensor between gas proportional control valve 8 and the low-nitrogen combustor 6, methane concentration sensor, gas proportional control valve 8 and igniter are connected with 9 electricity of controller respectively.
Preferably, a wind pressure switch is arranged on the fan 4, and the fan 4 and the wind pressure switch are respectively and electrically connected with the controller 9. The pressure of discharging fume is monitored to the wind pressure switch, and normal condition lower pressure, when taking place flue jam scheduling problem, the pressure of discharging fume risees, and the flue gas can't in time be discharged. At the moment, the controller 9 controls the fuel gas proportional control valve 8 to close the fuel gas, so that the dangers of carbon monoxide poisoning and the like are avoided.
Preferably, the double-loop heat supply gas water heater further comprises a circulating pump 10, a water pressure gauge 11, a display screen 12 and an input key 13, wherein an automatic exhaust valve is arranged on the circulating pump 10, and the circulating pump 10, the display screen 12 and the input key 13 are respectively and electrically connected with the controller 9.
Preferably, the water inlet of the circulating pump 10 is communicated with a heating water return interface 16, the main heat exchanger 5 is respectively communicated with a tap water interface 15 and a domestic hot water interface 17, the main heat exchanger 5 is respectively communicated with the water outlet of the circulating pump 10 and a heating hot water interface 18, and the main heat exchanger 5, the condensing heat exchanger 3 and the pre-cooling pipe 7 are arranged in parallel.
Preferably, a water flow sensor is arranged on a pipeline between the tap water connector 15 and the main heat exchanger 5, and the water flow sensor is electrically connected with the controller 9.
When the heating device is used, the pipeline is connected according to the requirement, if only the heating function is used, the heating water return connector 16 and the heating hot water connector 18 are connected into the heating pipeline to form a closed loop, and the gas connector 14 is connected with natural gas. The heating water loop and the domestic hot water loop are switched by a built-in electromagnetic valve and are mutually independent. After the power is switched on, the whole device operates according to instructions input by a user, when a heating function is used, the circulating pump 10 drives water in the whole heating loop to realize circulating flow, the igniter ignites to enable rows of flames to be generated in the low-nitrogen combustor 6, and the water in the main heat exchanger 5 and the condensing heat exchanger 3 is heated to realize heat exchange. In order to realize low nitrogen emission, the mixed gas of fuel gas and air is pre-cooled by the pre-cooling pipe 7, so that the flame temperature is not too high, and the concentration of oxygen in the mixed gas is slightly higher than the theoretical value of complete combustion by matching the methane concentration sensor with the fuel gas proportional control valve 8, so that the nitrogen oxide generated by burning natural gas can be greatly reduced. The smoke generated by combustion is forcibly exhausted out of the room through the fan 4, the smoke exhaust pipe is of an inner-outer double-layer structure, the inner layer exhausts the smoke, the outer layer inhales the air, and the indoor air is not affected.
The whole device also has the function of providing domestic hot water, the domestic hot water can be provided only by connecting tap water, and the heating pipeline and the domestic hot water pipeline are automatically switched by the electromagnetic valve. When the domestic hot water is used, the heating function is interrupted, but the domestic hot water is short in service time, and the heating effect is not influenced. The device is intelligently controlled, has multiple purposes, and reduces the repeated investment of users.
The control mode of the present invention is automatically controlled by the controller 9, the control circuit of the controller 9 can be realized by simple programming by a person skilled in the art, which belongs to the common knowledge in the field, and the present invention is mainly used for protecting the mechanical arrangement, so the control mode and the circuit connection are not explained in detail in the present invention.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. The utility model provides a two return circuits heat supply gas heater which characterized in that: comprises a shell (1), and a discharge flue (2), a condensing heat exchanger (3), a fan (4), a main heat exchanger (5), a low-nitrogen burner (6), a precooling pipe (7), a fuel gas proportional control valve (8) and a controller (9) which are arranged in the shell (1); the discharge flue (2) is arranged at the upper part of the shell (1), and the interior of the discharge flue (2) is communicated with the condensing heat exchanger (3); the main heat exchanger (5) is arranged at the upper part of the low-nitrogen combustor (6), and the fan (4) is arranged at the top of the main heat exchanger (5) and communicated with the discharge flue (2) and the interior of the main heat exchanger (5); the pre-cooling pipe (7) is arranged outside the low-nitrogen combustor (6), and the condensation heat exchanger (3), the pre-cooling pipe (7) and the main heat exchanger (5) are connected through pipelines; low nitrogen burner (6) inside is equipped with some firearm, gas proportional control valve (8) pass through the tube coupling with low nitrogen burner (6), be equipped with methane concentration sensor between gas proportional control valve (8) and low nitrogen burner (6), methane concentration sensor, gas proportional control valve (8) and firearm are connected with controller (9) electricity respectively.
2. The dual circuit hot gas water heater of claim 1, wherein: the air pressure switch is arranged on the fan (4), and the fan (4) and the air pressure switch are respectively electrically connected with the controller (9).
3. The dual circuit hot gas water heater of claim 2, wherein: the double-loop heat supply gas water heater further comprises a circulating pump (10), a water pressure meter (11), a display screen (12) and an input key (13), wherein an automatic exhaust valve is arranged on the circulating pump (10), and the circulating pump (10), the display screen (12) and the input key (13) are respectively and electrically connected with the controller (9).
4. A dual circuit heating gas water heater according to claim 3, wherein: the water inlet of the circulating pump (10) is communicated with the heating water return interface (16), the main heat exchanger (5) is communicated with the tap water interface (15) and the domestic hot water interface (17) respectively, the main heat exchanger (5) is communicated with the water outlet of the circulating pump (10) and the heating hot water interface (18) respectively, and the main heat exchanger (5), the condensing heat exchanger (3) and the precooling pipe (7) are arranged in parallel.
5. The dual circuit hot gas water heater of claim 4, wherein: and a water flow sensor is arranged on a pipeline between the tap water connector (15) and the main heat exchanger (5), and the water flow sensor is electrically connected with the controller (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262735.0A CN110926020A (en) | 2019-12-11 | 2019-12-11 | Double-loop heat supply gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262735.0A CN110926020A (en) | 2019-12-11 | 2019-12-11 | Double-loop heat supply gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110926020A true CN110926020A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911262735.0A Pending CN110926020A (en) | 2019-12-11 | 2019-12-11 | Double-loop heat supply gas water heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN110926020A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635863A (en) * | 2012-04-08 | 2012-08-15 | 威能(无锡)供热设备有限公司 | Burner and fuel gas hot water equipment adopting same |
| CN204421358U (en) * | 2014-12-16 | 2015-06-24 | 浙江工业大学 | Have monitoring empty-fire the condensed type combustion gas water heater of full premix ratio function |
| US20150308711A1 (en) * | 2014-04-28 | 2015-10-29 | Idalex Technologies, Inc. | Heat Recovery Method and Apparatus |
| CN109612104A (en) * | 2018-12-17 | 2019-04-12 | 成都前锋电子有限责任公司 | A kind of warm bath dual-purpose stove of novel low nitrogen condensed type combustion gas |
| CN211695387U (en) * | 2019-12-11 | 2020-10-16 | 河北博志热能设备有限公司 | Double-loop heat supply gas water heater |
-
2019
- 2019-12-11 CN CN201911262735.0A patent/CN110926020A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635863A (en) * | 2012-04-08 | 2012-08-15 | 威能(无锡)供热设备有限公司 | Burner and fuel gas hot water equipment adopting same |
| US20150308711A1 (en) * | 2014-04-28 | 2015-10-29 | Idalex Technologies, Inc. | Heat Recovery Method and Apparatus |
| CN204421358U (en) * | 2014-12-16 | 2015-06-24 | 浙江工业大学 | Have monitoring empty-fire the condensed type combustion gas water heater of full premix ratio function |
| CN109612104A (en) * | 2018-12-17 | 2019-04-12 | 成都前锋电子有限责任公司 | A kind of warm bath dual-purpose stove of novel low nitrogen condensed type combustion gas |
| CN211695387U (en) * | 2019-12-11 | 2020-10-16 | 河北博志热能设备有限公司 | Double-loop heat supply gas water heater |
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