CN115682434A

CN115682434A - Gas water heater based on pulse combustion technology

Info

Publication number: CN115682434A
Application number: CN202211417748.2A
Authority: CN
Inventors: 徐艳英; 刘嵩勃
Original assignee: Shenyang Aerospace University
Current assignee: Shenyang Aerospace University
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-02-03

Abstract

The invention provides a gas water heater based on a pulse combustion technology, and relates to the technical field of household appliances. The gas water heater comprises a shell, a pulse combustor inside the shell and a control center. The shell is provided with a water inlet pipe, a water outlet pipe, an air inlet pipe and a smoke exhaust pipe which extend to the outside. The pulse combustor is divided into a combustion part, a heat exchange part and a smoke exhaust part; in the combustion part, the mixing chamber mixes air and fuel gas, the ignition device gives out an instruction in the control center and then ignites, the mixed gas is combusted in the combustion chamber, and hot flue gas is generated and transmitted to the heat exchange part; in the heat exchange part, a tail pipe is used as a heat exchange surface, and hot flue gas flows through the tail pipe to exchange heat with cold water in a water jacket; in the smoke exhaust part, smoke flows through the decoupling chamber and then is exhausted by the smoke exhaust pipe. The invention applies the pulse combustion technology to the gas water heater, can increase the heat exchange coefficient, save the heat exchange area and improve the combustion efficiency.

Description

Gas water heater based on pulse combustion technology

Technical Field

The invention relates to the technical field of household appliances, in particular to a gas water heater based on a pulse combustion technology.

Background

The gas water heater is one of the most commonly used water heaters in people's life, and comprises a shell and a heating device inside the shell; the shell is provided with a water inlet and a water outlet, and cold water enters the shell from the water inlet and is heated by the heating device and then is output from the water outlet pipe.

The existing gas water heater uses the traditional combustion technology and has the following defects: because the combustion intensity is limited, the situation of insufficient heat production sometimes occurs; when the heat exchanger is used for heat exchange, the heat transfer coefficient is small, a larger heat exchange area is needed, the size of the water heater is increased, and the cost is increased; the combustion efficiency is not high under the condition of lower excess air similarity coefficient, and more heat loss is caused.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, and provides a gas water heater based on a pulse combustion technology.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a gas water heater based on pulse combustion technology comprises a shell, a pulse combustor inside the shell and a control center;

the shell is provided with an extended water inlet pipe, an extended water outlet pipe, an extended fuel gas inlet pipe, an extended air inlet pipe and an extended smoke exhaust pipe;

the water inlet pipe is connected with a household water supply pipe of a user to be connected with cold water; the water outlet pipe is connected with a domestic water pipe to output hot water; the gas inlet pipe and the household gas pipeline are connected with combustible gas; the air inlet pipe is connected with air to be connected with air; the smoke exhaust pipe is used for exhausting smoke generated by the pulse combustor; the control center is used for regulating and controlling the whole water heater;

the pulse combustor comprises a combustion part, a heat exchange part and a smoke exhaust part; the pulsating burner combustion part is used for mixing and combusting combustible gas and air; the pulsating burner heat exchange part is used for heating cold water accessed by the water inlet pipe through hot smoke generated by the combustion part; the smoke exhaust part is used for exhausting smoke generated by the pulse combustor out of the gas water heater through the smoke exhaust pipe.

Further, the combustion part of the pulse combustor comprises an ignition device, a mixing chamber and a combustion chamber; the ignition device is used for electric spark ignition; the mixing chamber is used for fully mixing air and fuel gas; the combustion chamber is used for pulse combustion;

after the control center obtains the instruction, the gas enters the mixing chamber through the gas inlet pipe, the air enters the mixing chamber through the air inlet pipe, the gas and the air are fully mixed, and the gas is ignited by the ignition device and then is combusted in the combustion chamber.

Further, a water inlet, a water outlet, a tail pipe and a water jacket of the heat exchange part of the pulse combustor; the front end of the tail pipe is connected with the combustion chamber, and the surface of the tail pipe is provided with a water jacket; the water inlet is connected with a water inlet pipe on the shell and used for introducing cold water into the water jacket; the water outlet is connected with a water outlet pipe on the shell and used for discharging hot water out of the water jacket; cold water enters the water jacket arranged outside the tail pipe from the water inlet, the surface of the tail pipe serves as a heat exchange surface to heat the cold water in the water jacket, and the heated hot water is discharged out of the water jacket through the water outlet.

Further, the smoke exhaust part of the pulse combustor comprises a decoupling chamber and a smoke outlet; the inlet of the decoupling chamber is connected with the tail end of the tail pipe, and the outlet of the decoupling chamber is connected with the smoke outlet; the decoupling chamber is used for reducing noise generated by pulsating combustion oscillation; the smoke outlet is connected with a smoke exhaust pipe on the shell and used for exhausting smoke.

Furthermore, an air pump is arranged on the air inlet pipe and used for pressing air into the pulse combustor.

Further, the tail pipe is spiral.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the gas water heater based on the pulse combustion technology can increase the heat exchange coefficient, save the heat exchange area and improve the combustion efficiency. The decoupling chamber arranged at the tail end of the tail pipe can effectively reduce noise.

Drawings

Fig. 1 is a schematic structural diagram of a gas water heater based on a pulse combustion technology according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a combustion part of a pulse combustor provided by an embodiment of the invention;

fig. 3 is a schematic structural diagram of a heating part of a pulse combustor provided in an embodiment of the invention.

In the figure: 1. a water inlet pipe; 2. a water outlet pipe; 3. a gas inlet pipe; 4. an air inlet pipe; 5. a smoke exhaust pipe; 6. a pulsating burner combustion section; 7. a heat exchange and smoke exhaust part of the pulse combustor; 8. an air pump; 9. a control center; 11. an ignition device; 12. a mixing chamber; 13. a combustion chamber; 21. a smoke outlet; 22. a water inlet; 23. a water outlet; 24. a tail pipe; 25. a decoupling chamber.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1, the present embodiment provides a gas water heater based on the pulse combustion technology, which includes a housing, a pulse combustor inside the housing, and a control center 9.

The shell is provided with an extended water inlet pipe 1, an extended water outlet pipe 2, an extended fuel gas inlet pipe 3, an extended air inlet pipe 4 and an extended smoke exhaust pipe 5. The water inlet pipe 1 is connected with a household water supply pipe of a user and is connected with cold water; the water outlet pipe 2 is connected with a domestic water pipe to output hot water; combustible gas is introduced into the gas inlet pipe 3 and a household gas pipeline; the air inlet pipe 4 is connected with air to receive air; the smoke exhaust pipe 5 is used for exhausting the flue gas generated by the pulse combustor. The air inlet pipe 4 is provided with an air pump 8 for pressing air into the pulsation combustor.

The control center 9 is used for regulating and controlling the whole water heater.

The pulse combustor comprises a combustion part 6 and a heat exchange and smoke exhaust part 7. The combustion, heat exchange and smoke exhaust parts are sealed; the pulsation combustor combustion part 6 is used for pre-mixing combustible gas and air and then combusting; the pulsating burner heat exchange and smoke exhaust part 7 is used for heating cold water accessed by the water inlet pipe 1 through hot smoke generated by the combustion part and exhausting the smoke from the smoke exhaust pipe 5.

During specific implementation, cold water enters from the water inlet pipe 1, fuel gas and air respectively enter the combustor from the fuel gas inlet pipe 3, the air inlet pipe 4 and the air pump 8, after the control center 9 obtains an instruction, premixed gas burns in the combustion part 6 of the pulse combustor, hot smoke generated is transmitted to the heat exchange and smoke exhaust part 7 of the pulse combustor, finally the smoke is discharged from the smoke exhaust pipe 5, and hot water is discharged from the water outlet pipe 2.

The pulsating burner combustion section 6 includes an ignition device 11, a mixing chamber 12, and a combustion chamber 13, as shown in fig. 2. The ignition device 11 is used for spark ignition; the mixing chamber 12 is used for fully mixing air and fuel gas; the combustion chamber 13 is used for pulsating combustion.

After the control center 9 obtains the instruction, the control center controls the gas to enter the mixing chamber 12 from the gas inlet pipe 3, the air enters the mixing chamber 12 from the air inlet pipe 4, the gas and the air are fully mixed, and the ignition device 11 ignites the mixed gas and then burns the mixed gas in the combustion chamber 13.

The heat and smoke exchange part 7 of the pulse combustor comprises a smoke outlet 21, a water inlet 22, a water outlet 23, a tail pipe 24, a water jacket and a decoupling chamber 25, as shown in figure 3. Wherein the heat exchanging part comprises a water inlet 22, a water outlet 23, a tail pipe 24 and a water jacket, and the smoke discharging part comprises a smoke outlet 21 and a decoupling chamber 25. The smoke outlet 21 is connected with a smoke exhaust pipe 5 on the shell. The tail pipe 24 is spiral, the front end of the tail pipe is connected with the combustion chamber 13, and the tail end of the tail pipe is connected with the inlet of the decoupling chamber 25. The surface of the tail pipe 24 is covered with a water jacket, and the surface of the tail pipe 24 serves as a heat exchange surface to heat cold water in the water jacket. The water inlet 22 is connected with a water inlet pipe 1 on the shell and is used for introducing cold water into the water jacket; the water outlet 23 is connected with the water outlet pipe 2 on the shell and is used for discharging hot water out of the water jacket. The outlet of the decoupling chamber 25 is connected to the smoke outlet 21. The decoupling chamber 25 serves to reduce noise generated by the pulsating combustion oscillations. The flue gas is finally discharged out of the gas water heater from the smoke discharge pipe 5.

In specific implementation, hot flue gas enters the tail pipe 24 from the combustion part 6 of the pulse combustor, and cold water enters the water jacket from the water inlet 22 and is discharged from the water jacket from the water outlet 23 after being heated. The flue gas is discharged from the flue gas outlet 21 and finally discharged out of the gas water heater through the smoke discharge pipe 5.

The pulsating combustion is as a novel clean and advanced combustion technology, and this embodiment can increase the heat transfer coefficient with its design in the water heater, saves heat transfer area, improves combustion efficiency. And adopt spiral tail pipe design, make full use of water heater space increases the heated area.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit of the invention, which is defined by the claims.

Claims

1. The utility model provides a gas heater based on pulsation combustion technique which characterized in that: the pulse combustor comprises a shell and a pulse combustor inside the shell, and a control center (9);

the shell is provided with an extended water inlet pipe (1), an extended water outlet pipe (2), an extended gas inlet pipe (3), an extended air inlet pipe (4) and an extended smoke exhaust pipe (5);

the water inlet pipe (1) is connected with a household water supply pipe of a user and is connected with cold water; the water outlet pipe (2) is connected with a domestic water pipe to output hot water; the gas inlet pipe (3) and a household gas pipeline are connected with combustible gas; the air inlet pipe (4) is communicated with the outside atmosphere; the smoke exhaust pipe (5) is used for exhausting smoke generated by the pulse combustor; the control center (9) is used for regulating and controlling the whole water heater;

the pulse combustor comprises a combustion part (6), a heat exchange part and a smoke exhaust part; the combustion part (6), the heat exchange part and the smoke exhaust part are sealed; the pulsating burner combustion part (6) is used for pre-mixing combustible gas and air and then combusting; the heat exchange part of the pulse combustor is used for heating cold water accessed by the water inlet pipe (1) through hot smoke generated by the combustion part (6); the smoke exhaust part is used for exhausting smoke generated by the pulse combustor out of the gas water heater through a smoke exhaust pipe (5).

2. The gas water heater based on the pulse combustion technology as claimed in claim 1, wherein: the pulse combustor combustion part (6) comprises an ignition device (11), a mixing chamber (12) and a combustion chamber (13); the ignition device (11) is used for electric spark ignition; the mixing chamber (12) is used for fully mixing air and fuel gas; the combustion chamber (13) is used for pulsating combustion;

after the control center (9) obtains an instruction, gas enters the mixing chamber (12) from the gas inlet pipe (3), air enters the mixing chamber (12) from the air inlet pipe (4), the gas and the air are fully mixed, and the gas and the air are ignited by the ignition device (11) and then are combusted in the combustion chamber (13).

3. Gas water heater based on pulsating combustion technology as claimed in claim 1 or 2, wherein: the pulse combustor heat exchange part comprises a water inlet (22), a water outlet (23), a tail pipe (24) and a water jacket; the front end of the tail pipe (24) is connected with the combustion chamber (13), and the surface of the tail pipe (24) is provided with a water jacket; the water inlet (22) is connected with a water inlet pipe (1) on the shell and is used for introducing cold water into the water jacket; the water outlet (23) is connected with a water outlet pipe (2) on the shell and used for discharging hot water out of the water jacket; cold water enters a water jacket arranged outside a tail pipe (24) from a water inlet (22), the surface of the tail pipe (24) serves as a heat exchange surface to heat the cold water in the water jacket, and heated hot water is discharged out of the water jacket through a water outlet (23).

4. Gas water heater based on pulse combustion technology according to claim 3, characterized in that: the smoke exhaust part of the pulsating burner comprises a decoupling chamber (25) and a smoke outlet (21); the inlet of the decoupling chamber (25) is connected with the tail end of the tail pipe (24), and the outlet of the decoupling chamber (25) is connected with the smoke outlet (21); the decoupling chamber (25) is used for reducing noise generated by pulsation combustion oscillation; the smoke outlet (21) is connected with a smoke exhaust pipe (5) on the shell and used for exhausting smoke.

5. The gas water heater based on the pulse combustion technology as claimed in claim 1, wherein: and an air pump (8) is arranged on the air inlet pipe (4) and is used for pressing air into the pulse combustor.

6. A gas water heater based on pulse combustion technology as claimed in claim 1, characterized in that: the tail pipe (27) is spiral.