CN111795493A

CN111795493A - Self-generating gas wall-mounted furnace

Info

Publication number: CN111795493A
Application number: CN202010735740.5A
Authority: CN
Inventors: 李月锋; 翟鑫梦; 邹军; 王昭; 石明明; 杨波波
Original assignee: Shanghai Institute of Technology
Current assignee: Shanghai Institute of Technology
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-20

Abstract

The invention relates to a self-generating gas wall-mounted furnace which comprises a wall-mounted furnace shell, a gas collecting hood, a burner, a main heat exchanger and an electricity storage assembly, wherein the gas collecting hood and the electricity storage assembly are both positioned in the wall-mounted furnace shell, the burner and the main heat exchanger are both positioned in the gas collecting hood, the burner is positioned below the main heat exchanger, a gas inlet, a cold water inlet for heating, a smoke outlet and a hot water outlet for heating are formed in the wall-mounted furnace shell, the gas inlet is communicated with the burner, the smoke outlet is communicated with the gas collecting hood, the main heat exchanger is connected with the cold water inlet for heating and the hot water outlet for heating, and a plurality of temperature difference power generation sheets electrically connected with the electricity storage assembly are arranged on the outer side wall of the. Compared with the prior art, the invention can fully utilize heat energy and water pressure to carry out autonomous power generation and has multiple functions.

Description

Self-generating gas wall-mounted furnace

Technical Field

The invention belongs to the field of heating devices, and particularly relates to a self-generating gas wall-mounted furnace.

Background

With the development of science and technology, people have higher living standard, and the wall-hanging stove has been widely used as a common heating and warming device.

The working principle of the wall-mounted boiler is as follows: the combustor arranged in the wall-mounted boiler burns fuel gas to generate high-temperature flue gas flow, the high-temperature flue gas flow flows through the heat exchanger to heat circulating water in the heat exchanger, and therefore hot water is generated to be used by a user. The wall-mounted boiler also has various safety protection measures such as anti-freezing protection, dry burning prevention protection, accidental flameout protection, over-high temperature protection, water pump anti-blocking protection and the like. The temperature of the wall-mounted furnace can be freely controlled, and when no one is at home, the temperature of the wall-mounted furnace can be reduced, so that the consumption of natural gas is reduced.

In the in-service use process, the flue gas discharged after heat exchange through the heat exchanger in the wall-mounted furnace still has more heat, and the high-temperature flue gas is discharged from the air outlet without being subjected to heat exchange in the heat exchanger, so that the heat exchange efficiency of the heat exchanger is low, and a heat circulation water path in the wall-mounted furnace has great water pressure. The gas wall-mounted boiler in the current market does not consider the full utilization of temperature difference and water pressure.

Patent CN110542201A discloses a wall hanging stove. The hanging stove includes: the wall-mounted boiler main body is provided with a flue for smoke to pass through; the heat exchanger is arranged in the flue and exchanges heat with the flue gas passing through the flue; and the airflow adjusting device is arranged on a flue of the wall-mounted furnace main body, disturbs the flue gas flow passing through the heat exchanger, reduces the flow speed difference between different flue gas flows on different areas of the vertical section in the vertical section vertically corresponding to the flue gas flow, and further reduces the flow speed difference between different flue gas flows on different areas of the vertical section. This patent does not fully utilize the temperature difference, resulting in heat loss.

Patent CN209246395U discloses a hanging stove, including wind pressure switch (1) and fan (2), wind pressure switch (1) with be provided with communicating pipe (3) between fan (2), and part or whole communicating pipe (3) carry out the heat exchange with the heat source. The patent does not make good use of the water pressure in the heating circulation water path.

Therefore, the wall-mounted gas furnace effectively utilizing the heat of the flue gas and the water pressure of the circulating water channel has wide market application prospect and important practical significance.

Disclosure of Invention

The invention aims to provide a self-generating gas wall-mounted furnace which can fully utilize heat energy and water pressure to generate electricity autonomously and has multiple functions.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a from electricity generation gas hanging stove, the hanging stove includes hanging stove housing, collection petticoat pipe, combustor, main heat exchanger and accumulate subassembly, collection petticoat pipe and accumulate subassembly all are located hanging stove housing, combustor and main heat exchanger all are located the collection petticoat pipe, the combustor is located main heat exchanger's below, be equipped with on the hanging stove housing that the gas enters the mouth, the cold water entry is used in the heating, exhanst gas outlet and hot water export is used in the heating, the gas enters the mouth and the combustor is linked together, exhanst gas outlet and collection petticoat pipe are linked together, main heat exchanger is connected the cold water entry for the heating and is used hot water export in the heating, be equipped with a plurality of thermoelectric generation pieces of being connected with the accumulate subassembly electricity on the. The fume collecting hood has two functions: one is to exhaust the smoke generated in the shell of the wall-mounted boiler, and the other is to exhaust the gas in time when the wall-mounted boiler leaks. In the main heat exchanger, flame generated after the combustion of the burner heats the main heat exchanger to obtain high-temperature hot water. The thermoelectric generation piece is installed in the both sides of collection petticoat pipe, utilizes the difference in temperature in collection petticoat pipe inboard and the outside to generate electricity, and the electric energy storage that obtains of generating provides operating voltage for hanging the stove in the energy storage subassembly. The main heat exchanger adopts the commonly used products in the prior art, the smoke collecting hood adopts a support (the support can be a bolt or a steel frame, and the like, and the same applies below) to be fixed in the wall-mounted furnace shell, and the main heat exchanger and the combustor adopt the support to be fixed in the smoke collecting hood.

The thermoelectric generation piece is mainly a thermoelectric couple and comprises a cold end and a hot end, wherein the cold end and the hot end are both made of semiconductor materials (including P-type semiconductor materials and N-type semiconductor materials), when temperature difference is generated at the cold end and the hot end, the thermal motion of a cavity at the hot end of the P-type semiconductor materials is higher than that at the cold end, and the cavity is diffused from the high-temperature end to the low-temperature end to form potential difference; the thermal motion of the electrons at the hot end of the N-type semiconductor material is higher than that at the cold end, and then the electrons diffuse from the high-temperature end to the low-temperature end to form a potential difference. In the formed loop, when a temperature difference exists between the two ends of the composite semiconductor material, an electromotive force is generated to form a current. The thermoelectric power generation piece adopts a common product in the prior art.

The wall-mounted furnace shell is also provided with a domestic hot water outlet communicated with the main heat exchanger, so that the wall-mounted furnace can supply heat for a house and can provide sufficient domestic hot water for a user, and the wall-mounted furnace has two functions.

And a hot water main pipe is arranged between the main heat exchanger and the hot water outlet for heating, and a hot water branch pipe communicated with the domestic hot water outlet is arranged on the hot water main pipe. The hot water main pipe can be provided with a water pump for pumping out hot water.

A cold water main pipe is arranged between the cold water inlet for heating and the main heat exchanger, a circulating water pump is arranged on the cold water main pipe, a cold water branch pipe is further arranged on the cold water main pipe, and an expansion water tank is arranged at the end of the cold water branch pipe. The circulating water pump is a power device for water circulation of the gas wall-mounted boiler, provides power for water circulation and overcomes resistance of the wall-mounted boiler, and is used for ensuring normal circulation of water of the whole wall-mounted boiler. The expansion water tank plays a role in buffering pressure fluctuation and partial water supply in the whole wall-mounted boiler, and is used for absorbing the volume of a part of a working medium increased due to temperature change, absorbing water hammer impact caused by opening and closing of a valve, a water pump and the like of the wall-mounted boiler, and enabling a main pump (namely a circulating water pump) of a water supply system to be dormant due to a small amount of water supplement at night, so that the power consumption is reduced, and the service life of the circulating water pump is prolonged. The circulating water pump and the expansion water tank are both fixed in the wall-mounted furnace shell by adopting a support.

The hanging stove is still including locating the supplementary heat exchanger in the hanging stove casing, cold water is responsible for and the hot water branch pipe all is linked together with supplementary heat exchanger. The auxiliary heat exchanger is positioned below the smoke collecting hood. The auxiliary heat exchanger is fixed in the wall-mounted furnace shell by adopting a support, and the auxiliary heat exchanger adopts a common product in the prior art.

The wall-mounted furnace shell is also provided with a heating return water inlet communicated with the main heat exchanger, so that a pipeline forms a loop, and a return water pipeline is arranged between the heating return water inlet and the main heat exchanger. The heating return water inlet can be communicated with the heating hot water outlet and the domestic hot water outlet, when the water heater starts to work or finishes working, the temperature of water discharged from the heating hot water outlet and the domestic hot water outlet is low at the moment, the water cannot be used for heating, the water with the low temperature can be pumped back to the heating return water inlet for utilization, and when the temperature of water discharged from the heating hot water outlet and the domestic hot water outlet meets the requirement, the communication with the heating return water inlet is cut off.

The gas inlet, the cold water inlet for heating, the hot water outlet for living and the return water inlet for heating are all provided with piezoelectric ceramics, and the piezoelectric ceramics are electrically connected with the electricity storage component. The piezoelectric ceramic generates electricity based on the piezoelectric effect, and the piezoelectric effect is a phenomenon that the material generates polarization due to relative displacement of internal positive and negative charge centers under the action of mechanical stress, so that bound charges with opposite signs appear on the surfaces of two ends of the material. The piezoelectric ceramic is installed in the inner sides of each inlet and each outlet, when a water flow water pressure exists in a water path or a fuel gas pressure exists in a gas path, the piezoelectric ceramic power generation element generates current, and the controller is stored in the battery pack after rectification and voltage stabilization so as to provide working voltage for the integral work of the wall-mounted furnace. The dosage of the piezoelectric ceramic is selected according to the power limit, and is generally 0.3W/KHZ/cm ^{^}3, the output charge of the piezoelectric ceramic is related to the area and the pressure of the piezoelectric ceramic (the water pressure of a water channel of a common wall-hanging stove is 1.2-1.5mbar), and the charge quantity generated by the piezoelectric ceramic is as follows: q ═ d · f, where d is the piezoelectric coefficient of the piezoelectric ceramic and f is the pressure. The piezoelectric ceramic is commonly used in the prior artThe product of (1).

The electricity storage component comprises a controller and a battery pack electrically connected with the controller, the controller is electrically connected with the thermoelectric generation piece and the piezoelectric ceramics, a rectifying circuit, a capacitor and a voltage-stabilizing charging circuit are arranged in the controller, and the battery pack is used for storing electric energy generated by the thermoelectric generation piece and the piezoelectric ceramics and providing working voltage for the wall-mounted furnace. The controller is arranged below the interior of the wall-mounted furnace shell, the battery pack is also arranged below the interior of the wall-mounted furnace shell, the unit of the battery pack is milliampere hour (mAh), a lithium battery is selected, when the capacity of the lithium battery is 1000mA, and the output current is 1mA, the current can be output for 1000h, and the lithium battery in the invention has 100AH capacity. The battery pack can be detached, and when the electric quantity in the battery is sufficient, the battery pack which stores full electric energy can be used for supplying power to other household appliances, so that the electric energy is fully utilized.

Be equipped with the gas pipeline between gas entry and the combustor, be equipped with the flue gas pipeline between collection petticoat pipe and the exhanst gas outlet, be equipped with the gas proportional valve on the gas pipeline, be equipped with the fan on the flue gas pipeline. The fan is located the outlet flue position of hanging stove, and the power of multiplicable flue gas air current circulation in the flue gas pipeline is equipped with the switch on the fan, and only hanging stove carries out the during operation, and the fan just starts. The gas proportional valve, the circulating water pump, the fan and the like are electrically connected with the controller, so that the components are conveniently cooperated when the gas proportional valve is started.

The gas proportional valve consists of two safety on-off valves and a proportional regulating valve, and can instantly turn on or off a gas source, or instantly reduce or increase the gas flow according to different requirements of heat load in the on-state of the gas source.

The combustor includes fire row and a plurality of ignition needle, the fire is arranged including drawing that communicates in proper order from bottom to top and is penetrated the entry, draw and penetrate passageway and spout fire portion, the ignition needle is close to the portion setting of spouting fire, still includes the response needle in the combustor, and the response needle can with the integrative setting of ignition needle, also can set up alone. The burner is a product commonly used in the art.

The wall-mounted boiler is additionally provided with the thermoelectric generation piece and the piezoelectric ceramics which can generate electricity on the basis of the existing wall-mounted boiler, when the ignition switch of the wall-mounted boiler enters a working state, a negative pressure difference is formed in the smoke collecting hood firstly, then fuel gas and cold water are introduced, the burner and the main heat exchanger are started, and the cold water can be heated into hot water. The thermoelectric generation piece utilizes the temperature difference of collection petticoat pipe both sides to generate electricity, and piezoceramics make full use of water pressure and atmospheric pressure generate electricity, provides operating voltage for hanging the stove jointly.

Compared with the prior art, the invention has the following advantages and positive effects:

1. the invention combines the thermoelectric power generation technology with the piezoelectric ceramic technology, effectively utilizes the flue gas heat generated after combustion of fuel gas and the water pressure of the heating circulating water path to generate power, and the control system is stored in the lithium battery after rectification and voltage stabilization, thereby providing working voltage for the wall-mounted furnace, and being energy-saving and environment-friendly.

2. The lithium battery in the device can be detached, and when the electric quantity in the battery is sufficient, the storage battery can be used for supplying power to other household appliances, so that the electric energy is fully utilized.

3. The auxiliary heat exchanger allows for more efficient use of heat.

4. The wall-mounted boiler provided by the invention can be used as a machine, can supply heat for houses, and can provide sufficient domestic hot water for users.

Drawings

Fig. 1 is a schematic structural diagram of a self-generating gas wall-mounted boiler;

FIG. 2 is a schematic view showing a connection relationship between the thermoelectric generation element, the piezoelectric ceramic, and the electricity storage element.

In the figure: 1-a smoke collecting hood; 2-a primary heat exchanger; 3-thermoelectric power generation sheet; 4-an ignition needle; 5-a gas proportional valve; 6-auxiliary heat exchanger; 7-a controller; 8-flue gas pipeline; 9-a fan; 10-an expansion water tank; 11-a burner; 12-a circulating water pump; 13-a battery pack; 14-piezoelectric ceramics; 15-wall hanging furnace shell; 16-hot water main pipe; 17-hot water branch pipe; 18-cold water main; 19-cold water branch pipe; 20-a gas pipeline; 21-a water return pipeline; a-hot water outlet for heating; b-a domestic hot water outlet; c-a gas inlet; d-a cold water inlet for heating; e-a backwater inlet for heating; f-a smoke outlet.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Examples

As shown in fig. 1 and 2, a wall-mounted gas stove with self-generating function comprises a wall-mounted stove shell 15, a smoke collecting hood 1, a burner 11, a main heat exchanger 2, an electricity storage component, an auxiliary heat exchanger 6 (the auxiliary heat exchanger 6 is positioned below the smoke collecting hood 1), the smoke collecting hood 1 and the electricity storage component are both positioned in the wall-mounted stove shell 15, the burner 11 and the main heat exchanger 2 are both positioned in the smoke collecting hood 1, the burner 11 is positioned below the main heat exchanger 2, the wall-mounted stove shell 15 is provided with a gas inlet C, a cold water inlet D for heating, a gas outlet F, a hot water outlet a for heating, a hot water outlet B for domestic use and a return water inlet E for heating, the gas inlet C is communicated with the burner 11, the gas outlet F is communicated with the smoke collecting hood 1, the main heat exchanger 2 is connected with the cold water inlet D for heating and the hot water outlet a for heating, and the hot water outlet, the heating backwater inlet E is communicated with the main heat exchanger 2, the electricity storage component comprises a controller 7 and a battery pack 13 electrically connected with the controller 7, a rectifying circuit, an electric capacitor and a voltage stabilizing charging circuit are arranged in the controller 7, a plurality of thermoelectric generation pieces 3 electrically connected with the controller 7 are arranged on the outer side wall of the smoke collecting cover 1, and a piezoelectric ceramic 14 electrically connected with the controller 7 is arranged at the gas inlet C, the heating cold water inlet D, the heating hot water outlet A, the domestic hot water outlet B and the heating backwater inlet E.

A hot water main pipe 16 is arranged between the main heat exchanger 2 and the heating hot water outlet A, a hot water branch pipe 17 communicated with the domestic hot water outlet B is arranged on the hot water main pipe 16, a cold water main pipe 18 is arranged between the heating cold water inlet D and the main heat exchanger 2, a circulating water pump 12 is arranged on the cold water main pipe 18, a cold water branch pipe 19 is further arranged on the cold water main pipe 18, an expansion water tank 10 is arranged at the end part of the cold water branch pipe 19, the cold water main pipe 18 and the hot water branch pipe 17 are both communicated with the auxiliary heat exchanger 6, a gas pipeline 20 is arranged between the gas inlet C and the combustor 11, a flue gas pipeline 8 is arranged between the smoke collecting hood 1 and the flue gas outlet F, and a. The gas pipeline 20 is provided with a gas proportional valve 5, the gas proportional valve 5 consists of two safety on-off valves and a proportional control valve, and the flue gas pipeline 8 is provided with a fan 9.

The combustor 11 includes fire row and a plurality of ignition needle 4, and the fire row is including drawing that from bottom to top communicates in proper order penetrate the entry, draw and penetrate passageway and spout fire portion, and ignition needle 4 is close to the portion setting of spouting fire.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a from electricity generation gas hanging stove, its characterized in that, hanging stove includes hanging stove casing (15), collection petticoat pipe (1), combustor (11), main heat exchanger (2) and accumulate subassembly, collection petticoat pipe (1) and accumulate subassembly all are located hanging stove casing (15), combustor (11) and main heat exchanger (2) all are located collection petticoat pipe (1), combustor (11) are located the below of main heat exchanger (2), be equipped with gas entry (C) on hanging stove casing (15), cold water entry (D) for the heating, flue gas outlet (F) and hot water export (A) for the heating, gas entry (C) and combustor (11) are linked together, flue gas outlet (F) and collection petticoat pipe (1) are linked together, main heat exchanger (2) are connected cold water entry (D) for the heating and hot water export (A) for the heating, the outer side wall of the smoke collecting cover (1) is provided with a plurality of thermoelectric generation pieces (3) electrically connected with the electricity storage assembly.

2. The wall-mounted self-generating gas boiler according to claim 1, wherein the wall-mounted boiler shell (15) is further provided with a domestic hot water outlet (B) communicated with the main heat exchanger (2).

3. The wall-mounted self-generating gas boiler according to claim 2, wherein a main hot water pipe (16) is arranged between the main heat exchanger (2) and the hot water outlet (A) for heating, and a branch hot water pipe (17) communicated with the hot water outlet (B) for living is arranged on the main hot water pipe (16).

4. A self-generating gas wall-mounted furnace according to claim 3, wherein a cold water main pipe (18) is arranged between the cold water inlet (D) for heating and the main heat exchanger (2), a circulating water pump (12) is arranged on the cold water main pipe (18), a cold water branch pipe (19) is further arranged on the cold water main pipe (18), and an expansion water tank (10) is arranged at the end of the cold water branch pipe (19).

5. The wall-mounted self-generating gas boiler according to claim 4, further comprising an auxiliary heat exchanger (6) arranged in the wall-mounted boiler shell (15), wherein the cold water main pipe (18) and the hot water branch pipe (17) are both communicated with the auxiliary heat exchanger (6).

6. The self-generating gas wall-mounted furnace according to claim 2, wherein the wall-mounted furnace shell (15) is further provided with a heating return water inlet (E) communicated with the main heat exchanger (2), and a return water pipe (21) is arranged between the heating return water inlet (E) and the main heat exchanger (2).

7. The self-generating gas wall-mounted furnace according to claim 6, wherein piezoelectric ceramics (14) are arranged at the gas inlet (C), the cold water inlet (D) for heating, the hot water outlet (A) for heating, the hot water outlet (B) for living and the return water inlet (E) for heating, and the piezoelectric ceramics (14) are electrically connected with the electricity storage component.

8. A self-generating gas wall-hanging stove according to claim 1, characterized in that the electricity storage component comprises a controller (7) and a battery pack (13) electrically connected with the controller (7), the controller (7) is electrically connected with the thermoelectric generation sheet (3), and the controller (7) is provided with a rectifying circuit, a capacitor and a voltage-stabilizing charging circuit.

9. A self-generating gas wall-mounted furnace according to claim 1, wherein a gas pipeline (20) is arranged between the gas inlet (C) and the burner (11), a flue gas pipeline (8) is arranged between the fume collecting hood (1) and the flue gas outlet (F), a gas proportional valve (5) is arranged on the gas pipeline (20), and a fan (9) is arranged on the flue gas pipeline (8).

10. The wall-mounted self-generating gas stove according to claim 1, characterized in that the burner (11) comprises a fire grate and a plurality of ignition needles (4), the fire grate comprises an injection inlet, an injection passage and a fire spraying part which are sequentially communicated from bottom to top, and the ignition needles (4) are arranged close to the fire spraying part.