CN211695387U - Double-loop heat supply gas water heater - Google Patents
Double-loop heat supply gas water heater Download PDFInfo
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- CN211695387U CN211695387U CN201922203270.3U CN201922203270U CN211695387U CN 211695387 U CN211695387 U CN 211695387U CN 201922203270 U CN201922203270 U CN 201922203270U CN 211695387 U CN211695387 U CN 211695387U
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Abstract
The utility model relates to a domestic water heater technical field especially relates to a two return circuits heat supply gas 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 utility model relates to a domestic water heater technical field especially relates to a two return circuits heat supply gas 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the technique that exists is not enough to the aforesaid, provides a two return circuits heat supply gas heater, adopts two heat transfer circuit to come better exchange heat, reduces the flue gas temperature of emission and adopts low nitrogen oxide emission design.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: 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 utility model has the advantages of it is following: 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
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The specific implementation mode is as follows: referring to fig. 1-3, the dual-circuit heat supply gas water heater of the present invention comprises a housing 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 pre-cooling pipe 7, a gas proportional control valve 8 and a controller 9 which are arranged in the housing 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 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 utility model discloses a control mode comes automatic control through controller 9, and the control circuit of controller 9 can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting the machinery setting, so the utility model discloses no longer explain control mode and circuit connection in detail.
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 |
|---|---|---|---|
| CN201922203270.3U CN211695387U (en) | 2019-12-11 | 2019-12-11 | Double-loop heat supply gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922203270.3U CN211695387U (en) | 2019-12-11 | 2019-12-11 | Double-loop heat supply gas water heater |
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| CN211695387U true CN211695387U (en) | 2020-10-16 |
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| CN201922203270.3U Active CN211695387U (en) | 2019-12-11 | 2019-12-11 | Double-loop heat supply gas water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926020A (en) * | 2019-12-11 | 2020-03-27 | 河北博志热能设备有限公司 | Double-loop heat supply gas water heater |
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- 2019-12-11 CN CN201922203270.3U patent/CN211695387U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926020A (en) * | 2019-12-11 | 2020-03-27 | 河北博志热能设备有限公司 | Double-loop heat supply gas water heater |
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