CN211876366U - Direct-fired hot water generator - Google Patents

Abstract

The utility model discloses a direct combustion formula hot water generator, the power distribution box comprises a box body, the inside of upper end one side fixedly connected with fuel premixing pipe and running through to the box of box, the upper portion lateral wall fixedly connected with branch pipe of fuel premixing pipe, the upper end of branch pipe is provided with air intlet, the other end of branch pipe is provided with the gas import, the lower extreme of fuel premixing pipe is provided with the combustion chamber, the below of combustion chamber is provided with air water mixing arrangement, the upper end opposite side of box is provided with the heat transfer chamber, the upper end fixedly connected with exhaust port of heat transfer chamber, the upper portion lateral wall fixedly connected with cold water import of heat transfer chamber, the upper portion lateral wall of box is connected with the hot water outlet. The utility model discloses in, furthest's reduction the heat loss of discharging fume, very big improvement hot water generator's energy-conserving effect.

Description

Direct-fired hot water generator

Technical Field

The utility model relates to a gas formula water heating field especially relates to direct combustion formula hot water generator.

Background

The demand of people for hot water is full of every corner in our production and life, and the method for obtaining hot water also varies according to different occasions and conditions.

In industry or where there is a large demand for hot water, a hot water boiler is generally used to heat water. The hot water boiler can be generally classified into an electric heating type, a fuel oil (gas) type, and a coal-fired type according to the fuel used for heating. The electric heating boiler is convenient to use and pollution-free, but the relative operating cost is higher; the coal-fired boiler has low operation cost, but has larger pollution and high treatment cost which needs to be additionally increased. Considering environmental protection, economy and other factors comprehensively, oil (gas) fired boilers gradually occupy most markets, and the natural gas hot water boiler accounts for the highest proportion among the oil (gas) fired boilers.

Along with the gradual improvement of the living standard of people in daily life, the demand on rapid, safe and practical modern equipment is increasing day by day, and various water heaters are widely used for replacing the prior water boiling by a stove. The electric water heater and the gas water heater are common water heaters, and the gas water heater is accepted by the masses by virtue of the advantages of high heating speed, low use cost, small occupied area and the like. Most of civil gas water heaters in the market at the present stage are balanced type natural gas water heaters, oxygen required by combustion is taken from the outside, meanwhile, smoke generated by combustion is exhausted to the outside, and when hot water is rapidly supplied, other influences on the inside of a room cannot be caused.

With the increasing energy-saving consciousness, people pursue that the hot water generator can be more economical and save more energy to reduce the use cost while meeting the requirements of safety, environmental protection and comfort. For the existing hot water generator, the exhaust gas temperature is high, and water generated by combustion of natural gas is discharged along with the exhaust gas, so that a large amount of heat loss is caused. If the temperature of the discharged smoke can be reduced, and the latent heat released by the condensation of the vapor in the smoke is fully utilized, the utilization rate of the fuel is greatly improved, and the purpose of energy conservation is achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art and providing a direct-fired hot water generator.

In order to achieve the above purpose, the utility model adopts the following technical scheme: direct-fired hot water generator, the power distribution box comprises a box body, the inside of the upper end one side fixedly connected with fuel premixing pipe of box and running through to the box, the upper portion lateral wall fixedly connected with branch pipe of fuel premixing pipe, the upper end of branch pipe is provided with air intlet, the other end of branch pipe is provided with the gas import, the lower extreme of fuel premixing pipe is provided with the combustion chamber, the below of combustion chamber is provided with air water mixing arrangement, the upper end opposite side of box is provided with the heat transfer chamber, the upper end fixedly connected with exhaust port of heat transfer chamber, the upper portion lateral wall fixedly connected with cold water inlet of heat transfer chamber, the upper portion lateral wall fixedly connected with hot water outlet of box.

As a further description of the above technical solution:

the upper end fixedly connected with of fuel mixes the inside that the pipe was just extended to fuel mixes the pipe 4 in advance, the lower extreme lateral wall fixedly connected with temperature sensor of some firearm, the lower extreme inner wall fixedly connected with cyclone structure of fuel mixes the pipe 4 in advance.

As a further description of the above technical solution:

the cyclone structure comprises an outer ring, an inner ring is arranged at the inner side of the outer ring, and spiral blades are fixedly connected with the inner wall of the outer ring and the inner wall of the inner ring at equal angles.

As a further description of the above technical solution:

the gas-water mixing device comprises a gas-water mixing side wall, and inclined holes are uniformly distributed in the gas-water mixing side wall.

As a further description of the above technical solution:

the heat exchange chamber is internally provided with a heat exchange tube, the upper end of the heat exchange tube is communicated with the smoke outlet, the lower end of the heat exchange tube is fixedly connected with the upper end of the box body and is communicated with the inside of the box body, and a communication port is formed in the end plate of the heat exchange tube at the upper end of the box body.

As a further description of the above technical solution:

the lateral wall equidistance of heat exchange tube is provided with the bulge loop.

The utility model discloses following beneficial effect has:

the utility model discloses, change original structural style and heat transfer mode, make the sensible heat and the latent heat of flue gas basically absorbed by water, make the flue gas temperature fall to the normal atmospheric temperature, furthest's reduction the heat loss of discharging fume, very big improvement hot water generator's energy-conserving effect.

Drawings

Fig. 1 is a schematic structural view of a direct-fired hot water generator according to the present invention;

fig. 2 is a schematic view of an air separation structure of the direct-fired hot water generator of the present invention;

fig. 3 is a schematic structural diagram at a in fig. 1.

Illustration of the drawings:

1. an air inlet; 2. a gas inlet; 3. a branch pipe; 4. a fuel premix tube; 5. a temperature sensor; 6. a wind-swirl structure; 7. a combustion chamber; 8. a gas-water mixing device; 9. a box body; 10. a hot water outlet; 11. a communication port; 12. a heat exchange pipe; 13. a heat exchange chamber; 14. a cold water inlet; 15. a smoke outlet; 16. an igniter; 17. an outer ring; 18. a helical blade; 19. an inner ring; 20. a gas-water mixing side wall; 21. and (4) inclined holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: direct-fired hot water generator, including box 9, box 9's upper end one side fixedly connected with fuel mixes pipe 4 in advance and runs through to box 9's inside, fuel mixes pipe 4's upper portion lateral wall fixedly connected with branch pipe 3 in advance, the upper end of branch pipe 3 is provided with air intlet 1, the other end of branch pipe 3 is provided with gas import 2, fuel mixes pipe 4's lower extreme and is provided with combustion chamber 7, the below of combustion chamber 7 is provided with air water mixing arrangement 8, box 9's upper end opposite side is provided with heat transfer chamber 13, the upper end fixedly connected with exhaust port 15 of heat transfer chamber 13, the upper portion lateral wall fixedly connected with cold water inlet 14 of heat transfer chamber 13, box 9's upper portion lateral wall fixedly connected with hot water.

The upper end of the fuel premixing pipe 4 is fixedly connected with an igniter 16 and extends into the fuel premixing pipe 4, the igniter 16 has the same ignition mode as a spark plug and breaks through air by high voltage to generate electric sparks to further ignite the fuel, the lower end side wall of the igniter 16 is fixedly connected with a temperature sensor 5, the temperature sensor 5 adopts a model PT100, the lower end inner wall of the fuel premixing pipe 4 is fixedly connected with a cyclone structure 6, the cyclone structure 6 comprises an outer ring 17, an inner ring 19 is arranged at the inner side of the outer ring 17, the mixed gas is further fully mixed when passing through the cyclone structure 6, meanwhile, the rotating gas flame is helpful for heating the side wall of the combustion chamber 7, helical blades 18 are fixedly connected at equal angles on the inner walls of the outer ring 17 and the inner ring 19, the gas-water mixing device 8 comprises a gas-water mixing side wall 20, and inclined holes 21 are uniformly distributed on the gas-water mixing side, the heat exchange chamber 13 is internally provided with a heat exchange tube 12, the upper end of the heat exchange tube 12 is communicated with the smoke outlet 15, the lower end of the heat exchange tube 12 is fixedly connected with the upper end of the box body 9 and is communicated with the inside of the box body 9, the upper end of the box body 9 is provided with a communication port 11 at the position of the heat exchange tube 12, the side wall of the heat exchange tube 12 is equidistantly provided with convex rings, the surface area of the heat exchange tube 12 can be increased, and the heat exchange efficiency.

The working principle is as follows: the utility model discloses during the use, gas and combustion-supporting wind get into in the fuel mixes the pipe 4 in advance by gas import 2 and air inlet 1 respectively, through the cyclone structure 6, promote gas and combustion-supporting wind further to mix, light through some firearm 16, when the fuel normally burns in the combustion chamber 7 of closed placing the aquatic in, the water in the box 9 has the cooling effect to combustion chamber 7, prevents it from being burnt out, and the heat in the combustion chamber 7 heats gas through the heat of fluidization is carried out to the water in combustion chamber wall and the box 9 simultaneously; high-temperature flue gas generated by combustion enters the gas-water mixing device 8 by virtue of the pressure in the combustion chamber 7, is sprayed out of dense inclined holes 21 distributed on the gas-water mixing side wall 20 and enters water in the box body 9 to form a plurality of micro bubbles to be directly mixed with the water for heat exchange, and simultaneously, the water in the combustion product is orderly changed into liquid water by directly releasing heat to be mixed with the water in the box body 9 to finish direct mixing heat exchange; gas components in the flue gas are insoluble in water, rise to the top of the box body in a small bubble form, pass through a flue gas channel of the heat exchange tube 12 and are discharged from a smoke outlet 15; cold water enters a heat exchange chamber 13 from a cold water inlet 14, combustion smoke and the cold water in a tail heat exchange tube 12 exchange heat through a heat exchange surface, the heat exchange tube 12 has a condensation effect on the smoke, the smoke exhaust temperature is reduced, residual water vapor in the smoke is forced to further condense and flows back to the interior of a box body 9 along the inner wall of the heat exchange tube 12 to be mixed with hot water, and meanwhile, heat released by condensation of the water vapor is transferred to the cold water entering a system from the cold water inlet 14 to heat the cold water; finally, hot water is discharged from the hot water outlet 10 for users to use, so that the latent heat of the water vapor in the smoke is fully utilized, the heat loss of the smoke is reduced, and the aim of saving energy is fulfilled.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. Direct-fired hot water generator, including box (9), its characterized in that: the utility model discloses a fuel premixing device, including box (9), upper end one side fixedly connected with fuel premixing pipe (4) and the inside of running through to box (9) of box (9), the upper portion lateral wall fixedly connected with branch pipe (3) of fuel premixing pipe (4), the upper end of branch pipe (3) is provided with air intlet (1), the other end of branch pipe (3) is provided with gas import (2), the lower extreme of fuel premixing pipe (4) is provided with combustion chamber (7), the below of combustion chamber (7) is provided with air water mixing arrangement (8), the upper end opposite side of box (9) is provided with heat transfer chamber (13), the upper end fixedly connected with exhaust port (15) of heat transfer chamber (13), the upper portion lateral wall fixedly connected with cold water import (14) of heat transfer chamber (13), the upper portion lateral wall fixedly connected with hot water export (10) of box (9).

2. A direct-fired hot water generator as claimed in claim 1, wherein: the upper end fixedly connected with of fuel premix pipe (4) some firearm (16) and extend to the inside of fuel premix pipe (4), the lower extreme lateral wall fixedly connected with temperature sensor (5) of some firearm (16), the lower extreme inner wall fixedly connected with cyclone structure (6) of fuel premix pipe (4).

3. A direct-fired hot water generator as claimed in claim 2, wherein: the cyclone structure (6) comprises an outer ring (17), an inner ring (19) is arranged at the inner side of the outer ring (17), and spiral blades (18) are fixedly connected with the inner wall of the outer ring (17) and the inner wall of the inner ring (19) at equal angles.

4. A direct-fired hot water generator as claimed in claim 1, wherein: the gas-water mixing device (8) comprises a gas-water mixing side wall (20), and inclined holes (21) are uniformly distributed on the gas-water mixing side wall (20).

5. A direct-fired hot water generator as claimed in claim 1, wherein: the inside of heat transfer room (13) is provided with heat exchange tube (12), the upper end and the exhaust port (15) intercommunication of heat exchange tube (12), the lower extreme of heat exchange tube (12) and the upper end fixed connection of box (9) just communicate with the inside of box (9), the upper end of box (9) is provided with intercommunication mouth (11) in the tip shrouding department of heat exchange tube (12).

6. A direct-fired hot water generator as claimed in claim 5, wherein: the side wall of the heat exchange tube (12) is equidistantly provided with convex rings.

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