CN209763540U - air inlet system of air source heat pump for heating flue gas of gas-fired boiler - Google Patents
air inlet system of air source heat pump for heating flue gas of gas-fired boiler Download PDFInfo
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- CN209763540U CN209763540U CN201822271922.2U CN201822271922U CN209763540U CN 209763540 U CN209763540 U CN 209763540U CN 201822271922 U CN201822271922 U CN 201822271922U CN 209763540 U CN209763540 U CN 209763540U
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Abstract
The utility model discloses a gas boiler flue gas heating air source heat pump air inlet system mainly relates to the air source heat pump field. The air source heat pump is characterized by comprising an air source heat pump, a chimney and a duct pipe, wherein an air suction inlet of the air source heat pump is communicated with the chimney through the duct pipe, a smoke control valve is arranged at the lower reaches of the position communicated with the duct pipe, an air duct air taking opening is formed in the upper side of the duct pipe, an air duct air taking control valve is arranged at the air duct air taking opening, an induced draft fan is arranged on one side, close to the air source heat pump, of the duct pipe, the induced draft fan blows air to the air source heat pump, a temperature transmitter is arranged on the duct pipe and senses the temperature change of the air in the duct pipe, and the temperature of the air in the duct is changed according to the. The beneficial effects of the utility model reside in that: the problem of environmental frosting of the air source heat pump in winter can be solved by utilizing the temperature generated by the smoke emission of the natural gas boiler.
Description
Technical Field
The utility model relates to an air source heat pump field specifically is a gas boiler flue gas heating air source heat pump air inlet system.
Background
However, when the air temperature is very low in winter (especially the air temperature is in the range of-5 ℃ to 5 ℃), the surface temperature of an outdoor heat exchanger of the air source heat pump is lower than 0 ℃, and when the air temperature is lower than the dew point temperature of the air, moisture in the air can be condensed into frost on the surface of the heat exchanger, so that the heating coefficient and the operation reliability of the air source heat pump are reduced. The air source heat pump needs frequent auxiliary defrosting by electric heating, the heat supply of the system at the stage to users is interrupted, the COP of the air heat pump system is greatly reduced, and a large amount of energy is consumed and the normal operation of an air conditioning system is influenced. The temperature of the flue gas discharged by the natural gas boiler is about 150 ℃ mostly (the temperature of the exhaust smoke of the gas condensing boiler is lower than 100 ℃), the residual heat of the flue gas has to be discharged to the environment due to the thermodynamic requirement of the exhaust smoke, and the heat is lost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas boiler flue gas heating air source heat pump air inlet system, it can utilize the temperature that the natural gas boiler flue gas emission produced to solve the winter environment frosting problem of air source heat pump.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
An air source heat pump air inlet system heated by flue gas of a gas boiler comprises an air source heat pump, a chimney and an air duct pipe, wherein an air source heat pump air suction opening and an air source heat pump air outlet are formed in the air source heat pump, an air source air taking and switching air door is arranged at the air source heat pump air suction opening, the air source heat pump air suction opening is communicated with the chimney through the air duct pipe, a flue gas control valve is arranged at the downstream of the position where the chimney is communicated with the air duct pipe, an air duct air taking opening is formed in the upper side face of the air duct pipe, a control cabinet is arranged beside the air duct pipe,
The air duct pipe comprises a smoke taking pipeline communicated with the chimney, an air taking pipeline connected with an air taking port of the air duct and a converging pipeline connected with an air suction port of the air source heat pump, the smoke taking pipeline, the air taking pipeline and the converging pipeline are communicated,
A chimney smoke taking control valve is arranged on the smoke taking pipeline, a first temperature transmitter is arranged on one side of the smoke taking pipeline close to the air source heat pump,
An air duct air intake control valve is arranged at the air duct air intake opening, a second temperature transmitter is arranged on one side of the air intake pipeline away from the air duct air intake opening,
be close to the chimney side on the pipeline that converges and be provided with the draught fan, be provided with the air source on the pipeline that converges between draught fan and the air source heat pump and get wind the switching valve, be provided with third temperature transmitter between air source heat pump and the pipeline that converges.
a flowmeter is arranged between the induced draft fan and the air source air intake switching valve,
the collecting pipe is provided with an upward diffusing port perpendicular to the collecting pipe, and the diffusing port is provided with a diffusing valve.
the confluence pipeline is provided with a drain outlet which is vertical to the confluence pipeline and faces downwards, and the drain outlet is provided with a drain valve.
and an alarm lamp is arranged on the control cabinet.
The outside of the air duct pipe is provided with heat insulation cotton.
contrast prior art, the beneficial effects of the utility model reside in that:
through the temperature of each region in the temperature transmitter real time monitoring wind channel pipe, when the temperature of third temperature transmitter surpassed the temperature of predetermineeing the scope, the switch board can control the size that the wind channel air control flap opened and shut to the air mass flow that gets into the wind channel pipe is changed, thereby changes the temperature of flue gas and air gas mixture, makes the mist temperature remain throughout in the certain limit.
The smoke of the gas boiler is used for increasing the temperature of the smoke and the air inlet of the air source heat pump, so that the frosting of the air source heat pump caused by low ambient temperature in winter can be avoided, the stability of heat supply for users is ensured, the increase of power consumption of the air source heat pump caused by defrosting is reduced, the comprehensive COP of the air source heat pump running in a high-efficiency area in winter is greatly improved all the time, and the energy saving rate is obvious. The waste heat of the boiler flue gas is used for heating the air inlet of the air source heat pump, and the energy utilization efficiency of the boiler system can be improved.
Drawings
Fig. 1 is a flow chart of the pipeline of the present invention.
Fig. 2 is a schematic diagram of the structure arrangement of the present invention.
Reference numerals shown in the drawings:
1. A chimney; 2. an air duct pipe; 3. an air source heat pump; 4. a control cabinet; 5. a flue gas control valve; 6. an air source heat pump air inlet; 7. an air source heat pump air outlet; 8. an air intake of the air duct; 9. a smoke extraction duct; 10. a gas taking pipeline; 11. a converging duct; 12. an isolation valve; 13. a chimney smoke taking control valve; 14. a first temperature transmitter; 15. a first thermometer; 16. an air intake control valve of the air duct; 17. a second temperature transmitter; 18. a second thermometer; 19. an induced draft fan; 20. a flow meter; 21. an air source air taking switching valve; 22. a third temperature transmitter; 23. a third thermometer; 24. a pressure gauge; 25. a bleed valve; 26. a blowoff valve; 27. an alarm lamp.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
Example (b): the utility model provides a gas boiler flue gas heating air source heat pump air inlet system, includes chimney 1, air duct pipe 2, air source heat pump 3 and switch board 4, be provided with flue gas control valve 5 in the chimney 1, flue gas control valve 5 sets up the downstream direction that the flue gas of the junction of chimney 1 and air duct pipe 2 flows, can carry out the flue gas that ends in the chimney 1 when using flue gas heating air source heat pump 3, leads the flue gas to air duct pipe 2. The air duct pipe 2 is communicated with the side wall of the chimney 1 and used for taking smoke from the chimney 1, an air source heat pump air suction opening 6 and an air source heat pump air outlet 7 are arranged on the air source heat pump 3, the air source heat pump air suction opening 6 is provided with an air source air taking and switching air door, when the air source air taking and switching air door is opened, ambient air can enter the air source heat pump air suction opening 6 from the air source air taking and switching air door, when the air source air taking and switching air door is closed, the ambient air cannot enter the air source heat pump air suction opening 6 from the air source air taking and switching air door, one end, far away from the chimney 1, of the air duct pipe 2 is communicated with the air source heat pump air suction opening 6 and guides the air to the air source heat pump 3, the air duct pipe 2 is provided with an air duct air taking opening 8 on the side wall, an alarm lamp 27 is arranged, The device comprises a gas taking pipeline 10 connected with an air channel air taking port 8 and a converging pipeline 11 connected with an air source heat pump suction port 6, wherein the gas taking pipeline 9, the gas taking pipeline 10 and the converging pipeline 11 are communicated through a tee pipe fitting, an isolation valve 12 is arranged on the side, close to a chimney 1, of the gas taking pipeline 9, the isolation valve 12 is a manual stop valve, a chimney smoke taking control valve 13 is arranged on the side, far away from the chimney 1, of the isolation valve 12 of the gas taking pipeline 9, the chimney smoke taking control valve 13 is an electric stop valve, a first temperature transmitter 14 and a first thermometer 15 are arranged on the side, close to the tee pipe fitting, of the gas taking pipeline 9, the first temperature transmitter 14 is used for recording and transmitting the temperature of smoke entering the gas taking pipeline 9, the first thermometer 15 can observe the temperature condition of the smoke entering the gas taking pipeline 9 when a worker walks on a line, the end, connected with the atmosphere, is the air channel air taking port 8, the wind inlet 8 department is provided with wind channel air and gets wind control valve 16 in wind channel air, wind channel air gets wind control valve 16 is electronic stop valve, get gas pipeline 10 and be close to tee bend pipe fitting one side and be provided with second temperature transmitter 17 and second thermometer 18, second temperature transmitter 17 is used for the record and the temperature of the air that the conveying got into gas pipeline 10, and second thermometer 18 can observe the temperature condition of the air that gets into gas pipeline 10 when the staff patrols the line, the position that is close to the tee bend pipe on converging pipeline 11 is provided with draught fan 19, draught fan 19 is axial flow type fan, draught fan 19 blows the air current to air source heat pump 3, be provided with flowmeter 20 between draught fan 19 and the air source heat pump for measure the flow that draught fan 19 blew off gas, flowmeter 20 uses ultrasonic flowmeter 20, and ultrasonic flowmeter 20 does not have the blade not produce the resistance in inside, the metering error can not be generated because particles in the flue gas are adsorbed on the blades, the flow meter 20 transmits flow data to the control cabinet 4, the control cabinet 4 can control the rotating speed of the induced draft fan 19 when the flow exceeds a preset value so as to change the flow speed, the alarm lamp 27 of the control cabinet 4 can flash to give an alarm when the flow is too low or too high, an air source air taking switching valve 21 is arranged between the flow meter 20 and the air source heat pump 3, the air source air taking switching valve 21 is an electric stop valve, a third temperature transmitter 22 and a third thermometer 23 are arranged between the air source air taking switching valve 21 and the air source heat pump 3, the third temperature transmitter 22 is used for recording and transmitting the temperature of the mixed gas to be transmitted to the air source heat pump 3, and the second thermometer 18 can observe the temperature condition of the mixed gas to be transmitted to the air source heat pump 3 when a worker walks on a, the first temperature transmitter 14, the second temperature transmitter 17 and the third temperature transmitter 22 transmit the temperature values to the control cabinet 4, and when the temperature of the third temperature transmitter 22 exceeds a preset value, the control cabinet can control the opening and closing size of the air intake control valve 16 of the air duct, so that the air flow entering the air duct pipe 2 is changed, and the temperature of the mixed gas is changed. When the temperature values of the first temperature transmitter 14 and the second temperature transmitter 17 exceed the original set value, the alarm lamp 27 of the numerical control cabinet 4 is lighted for alarming. A pressure gauge 24 is arranged between the flow meter 20 and the air source air intake switching valve 21, so that a worker can conveniently check the pressure condition in the air duct, the smoke exhaust effect is prevented from being influenced by overpressure when smoke is used, a diffusing opening is arranged between the flow meter 20 and the air source air intake switching valve 21 and is perpendicular to the confluence pipeline 11, a diffusing valve 25 is arranged at the diffusing opening, the diffusing valve 25 is a stop valve, all valves are closed when the equipment fails, the internal smoke is discharged by opening the diffusing valve 25, the injury of personnel caused by the internal smoke in the air duct during maintenance is prevented, a drain opening which is perpendicular to the confluence pipeline 11 and is arranged downwards is arranged between the flow meter 20 and the air source air intake switching valve 21, a drain valve 26 is arranged at the drain opening, the drain valve 26 uses a valve drain valve 26, and water drops which may be condensed in the confluence pipeline 11 due to the meeting of hot smoke and cold air in the actual sleeve type operation process, and finally, the sewage is accumulated at the bottom of the pipeline, and is discharged through a blowdown valve 26 at regular time, so that the influence of the sewage blown to the high-altitude air source heat pump 3 on the heat exchange efficiency or the heat exchange fins is reduced. The outside of the air duct pipe 2 is provided with heat insulation cotton, and the heat insulation cotton is formed by an EVA material and sleeved on the outside of the air duct pipe 2.
When the system uses boiler flue gas to mix air to improve the inlet air temperature of the air source heat pump 3, the flue gas control valve 5 of the chimney 1 is closed, the flue gas taking control valve 13 of the chimney is opened, the air taking control valve 16 of the air duct is opened, the air source air taking switching air door is closed, the induced draft fan 19 is opened, and the opening degree of the air taking control valve 16 of the air duct is controlled by the temperature at the evaporator of the air source heat pump 3. The rated air volume of the induced draft fan 19 is 1.1 times of the design air volume of the air source heat pump 3.
When the ambient temperature is higher or the boiler system can not provide the flue gas waste heat, when the system no longer uses boiler flue gas to mix wind, open the air source and get wind switching air door, close draught fan 19, close chimney and get cigarette control flap 13, open chimney 1 flue gas control flap 5, use ambient wind to provide the heat for air source heat pump 3.
When the equipment is stopped or overhauled, the air intake control valve 16 and the isolation valve 12 of the air duct are closed, so that the whole system can be separated from the chimney 1 and the heat exchanger, and personnel injury caused by the chimney effect formed when the equipment is stopped or overhauled is prevented.
Claims (6)
1. The utility model provides a gas boiler flue gas heating air source heat pump air inlet system which characterized in that: the air source heat pump chimney comprises an air source heat pump (3), a chimney (1) and an air duct pipe (2), wherein an air source heat pump air suction opening (6) and an air source heat pump air outlet (7) are arranged on the air source heat pump (3), the air source heat pump air suction opening (6) is provided with an air source air taking switching air door, the air source heat pump air suction opening (6) is communicated with the chimney (1) through the air duct pipe (2), a flue gas control valve (5) is arranged on the lower reaches of the position communicated with the air duct pipe (2) of the chimney (1), an air duct air taking opening (8) is arranged on the side face of the air duct pipe (2), and a control cabinet (4) is arranged beside the air duct pipe (2),
The air duct pipe (2) comprises a smoke taking pipeline (9) communicated with the chimney (1), an air taking pipeline (10) connected with an air taking port (8) of the air duct and a converging pipeline (11) connected with an air source heat pump suction inlet (6), the smoke taking pipeline (9), the air taking pipeline (10) and the converging pipeline (11) are communicated,
A chimney smoke taking control valve (13) is arranged on the smoke taking pipeline (9), a first temperature transmitter (14) is arranged on one side of the smoke taking pipeline (9) close to the air source heat pump (3),
An air duct air intake control valve (16) is arranged at the air duct air intake opening (8), a second temperature transmitter (17) is arranged on one side of the air intake pipeline (10) far away from the air duct air intake opening (8),
be close to chimney (1) side on converging pipeline (11) and be provided with draught fan (19), be provided with air source on converging pipeline (11) between draught fan (19) and the air source heat pump and get wind switching valve (21), be provided with third temperature transmitter (22) on converging pipeline (11) between air source air taking switching valve (21) and air source heat pump (3).
2. The air inlet system of the gas boiler flue gas heating air source heat pump according to claim 1, characterized in that: and a flowmeter (20) is arranged between the draught fan (19) and the air source air taking switching valve (21).
3. The air inlet system of the gas boiler flue gas heating air source heat pump according to claim 1, characterized in that: the converging pipeline (11) is provided with a diffusing port which is vertical to the converging pipeline (11) and faces upwards, and a diffusing valve (25) is arranged at the diffusing port.
4. the air inlet system of the gas boiler flue gas heating air source heat pump according to claim 1, characterized in that: the confluence pipeline (11) is provided with a sewage draining outlet which is vertical to the confluence pipeline (11) and faces downwards, and the sewage draining outlet is provided with a sewage draining valve (26).
5. The air inlet system of the gas boiler flue gas heating air source heat pump according to claim 1, characterized in that: and an alarm lamp (27) is arranged on the control cabinet (4).
6. The air inlet system of the gas boiler flue gas heating air source heat pump according to claim 1, characterized in that: the outer side of the air duct pipe (2) is provided with heat insulation cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822271922.2U CN209763540U (en) | 2018-12-29 | 2018-12-29 | air inlet system of air source heat pump for heating flue gas of gas-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822271922.2U CN209763540U (en) | 2018-12-29 | 2018-12-29 | air inlet system of air source heat pump for heating flue gas of gas-fired boiler |
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| Publication Number | Publication Date |
|---|---|
| CN209763540U true CN209763540U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822271922.2U Active CN209763540U (en) | 2018-12-29 | 2018-12-29 | air inlet system of air source heat pump for heating flue gas of gas-fired boiler |
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| CN (1) | CN209763540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869950A (en) * | 2018-12-29 | 2019-06-11 | 中民电力有限公司 | A kind of gas fired-boiler flue gas air source heat pump air inlet system |
-
2018
- 2018-12-29 CN CN201822271922.2U patent/CN209763540U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869950A (en) * | 2018-12-29 | 2019-06-11 | 中民电力有限公司 | A kind of gas fired-boiler flue gas air source heat pump air inlet system |
| CN109869950B (en) * | 2018-12-29 | 2024-07-12 | 中民云能源科技有限公司 | Air source heat pump air inlet system for heating flue gas of gas boiler |
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