Environment-friendly gas water heater

Abstract

The present application relates to gas water heater technical field, the present application provides a kind of environmental protection gas water heater, be equipped with heat exchange chamber and combustion chamber, catalytic baffle is equipped in combustion chamber, and the shell of combustion chamber forms gas flow passage;Combustion chamber is equipped with first air inlet hole;Catalytic baffle includes first baffle and second baffle;First baffle is flat plate structure and upper and lower end is equipped with second air inlet hole, second baffle is "Z" letter shape structure and from top to bottom by first sheet material, second sheet material and third sheet material are formed, the bottom end of first sheet material and the top end of second sheet material are connected, and third air inlet hole is equipped on second sheet material;The distance between first baffle, third sheet material and the shell of combustion chamber is b, the shortest distance between second sheet material and the shell of combustion chamber is a, and the inclination angle between level surface is α, b / 4 < a < b / 2;45 ° < α < 60 °, the present application makes gas fully burn, can effectively avoid the generation of nitrogen oxide compound, protects environment, saves energy.

Description

Technical Field

[0001] This invention relates to the field of gas water heater technology, and more specifically, to an environmentally friendly gas water heater. Background Technology

[0002] Gas water heaters generally consist of a combustion chamber and a heat exchange chamber. The combustion chamber is connected to an air intake pipe and a gas pipe. The air intake pipe and gas pipe are activated by detecting the water flow to supply gas to the combustion chamber. During gas combustion, due to the small space of the combustion chamber, the air intake is mainly provided by a fan. As the water heater ages and the fan becomes worn out, the gas combustion inside the combustion chamber may become incomplete when adjusting the air-to-gas ratio, producing nitrogen oxides and carbon monoxide, which pollute the air. At the same time, carbon monoxide can undergo secondary combustion in the presence of sufficient oxygen. However, since the existing combustion chamber only has one air intake port, which is the air intake port where the fan connects to the combustion chamber from the bottom, the incompletely burned carbon monoxide is heated in the upper part of the flame without sufficient oxygen for secondary combustion, resulting in waste and the production of nitrogen oxides. Summary of the Invention

[0003] The purpose of this invention is to provide an environmentally friendly gas water heater that can effectively provide sufficient oxygen to the combustion chamber through two air ducts, so that the gas can be fully burned. The side walls of the air ducts are made of catalytic materials, which can effectively avoid the generation of nitrogen oxides, protect the environment, and save energy.

[0004] The embodiments of the present invention are achieved through the following technical solution: An environmentally friendly gas water heater, comprising a heat exchange chamber and a combustion chamber from top to bottom, wherein the combustion chamber is provided with an air inlet pipe and the heat exchange chamber is provided with an exhaust pipe, the combustion chamber has a cubic structure and a catalytic baffle is provided inside the combustion chamber, the catalytic baffle and the shell of the combustion chamber forming a gas flow channel; a notch is left between the top of the catalytic baffle and the top of the shell of the combustion chamber, and a first air inlet is provided on the shell of the combustion chamber near the bottom of the catalytic baffle; the catalytic baffle includes a first baffle and a second baffle arranged in pairs; the first baffle has a flat plate structure, and the first baffle... The upper and lower ends are provided with second air intake holes. The second baffle has a "Z" shaped structure and is composed of a first plate, a second plate and a third plate from top to bottom. The third plate is set vertically. The bottom end of the first plate and the top end of the second plate are connected and set close to the shell of the combustion chamber. The second plate is provided with a third air intake hole. The distance between the first baffle and the shell of the combustion chamber is b, the distance between the third plate and the shell of the combustion chamber is b, the shortest distance between the second plate and the shell of the combustion chamber is a, and the inclination angle between the second plate and the horizontal plane is α. b / 4 < a < b / 2; 45° < α < 60°.

[0005] Furthermore, the first baffle is inclined and the distance between the bottom end of the first baffle and the housing of the combustion chamber is a, and the distance between the top end of the first baffle and the housing of the combustion chamber is b.

[0006] Furthermore, the intake pipe of the combustion chamber is a venturi pipe, the outlet of the venturi pipe is connected to the combustion chamber, the intake pipe of the venturi pipe is connected to the intake fan, and the throat of the venturi pipe is connected to the gas pipe.

[0007] Furthermore, the venturi tube has an adjustment mechanism at its throat, comprising: a first magnet and a second magnet symmetrically arranged, the first magnet and the second magnet being arranged perpendicular to the throat and their adjacent ends attracting each other; the first magnet being enclosed by a first housing connected to the throat and sliding within the first housing into the throat; the second magnet being enclosed by a second housing connected to the throat and sliding within the second housing into the throat; the other end of the first magnet being connected by a spring to the end of the first housing away from the throat, and the other end of the second magnet being connected by a spring to the end of the second housing away from the throat; a first coil being sleeved on the outside of one housing, and a second coil being sleeved on the outside of the second housing; the first coil and the second coil being energized; an igniter being provided inside the throat and above the first housing or the second housing; the end of the first magnet having a first opening, and the end of the second magnet having a second opening, the first opening and the second opening forming a through hole when the first magnet and the second magnet are in contact.

[0008] Furthermore, the catalytic separator is covered with a combustion catalyst, which is one of Pd, Pt, CuO, or MnO2.

[0009] Furthermore, the catalytic separator is connected to the combustion chamber housing via a support rod.

[0010] Furthermore, a condensate drain pipe is provided on the casing of the combustion chamber.

[0011] The present invention has at least the following advantages and beneficial effects: by setting a catalytic baffle, the originally single combustion chamber shell is set as a sandwich structure, and secondary oxygen supply is carried out through the sandwich. In this stage, the oxygen is heated by the combustion chamber, which is conducive to secondary combustion. In addition, the catalytic baffle is composed of a first baffle and a second baffle. The first baffle is for gas supply to the top and bottom of the combustion chamber, and the second baffle is for gas supply to the upper middle part of the combustion chamber. By using a special parameter relationship, the intake air volume is maximized and the amount of monoxide discharged is minimized. At the same time, a combustion catalyst is set on the catalytic baffle, which helps combustion and oxidizes combustible gases in advance, reducing the production of nitrogen oxides. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram of an environmentally friendly gas water heater provided in Embodiment 1;

[0014] Figure 2 This is a schematic diagram of the gas flow channel in an environmentally friendly gas water heater provided in Embodiment 1;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of an environmentally friendly gas water heater provided in Embodiment 1;

[0016] Figure 4 This is a schematic diagram of the structure of an environmentally friendly gas water heater provided in Embodiment 2;

[0017] Figure 5 This is a schematic diagram of the first working state of the first magnet and the second magnet in an environmentally friendly gas water heater provided in Embodiment 2;

[0018] Figure 6 This is a schematic diagram of the second working state of the first and second magnets in an environmentally friendly gas water heater provided in Embodiment 2;

[0019] Icons: 1-Heat exchange chamber, 2-Combustion chamber, 21-Gas flow channel, 22-First air inlet, 31-First plate, 32-Second plate, 33-Third plate, 34-Third air inlet, 41-First partition, 42-Second air inlet, 5-Adjusting mechanism, 51-Venturi tube, 52-Gas pipe, 53-Intake fan, 54-First magnet, 55-Second magnet, 56-First coil, 57-Igniter, 58-Second coil, 59-Spring, 60-Through hole, 61-First opening, 62-Second opening. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] Example 1

[0023] like Figure 1 As shown in the figure, this embodiment mainly discloses an environmentally friendly gas water heater, which is provided with a heat exchange chamber 1 and a combustion chamber 2 from top to bottom. The combustion chamber 2 is provided with an air inlet pipe, and the heat exchange chamber 1 is provided with a flue pipe. The combustion chamber 2 has a cubic structure and a catalytic baffle is provided inside the combustion chamber 2. The catalytic baffle and the shell of the combustion chamber 2 form a gas flow channel 21. There is a notch between the top of the catalytic baffle and the top of the shell of the combustion chamber 2. A first air inlet 22 is provided on the shell of the combustion chamber 2 near the bottom of the catalytic baffle. Air enters from the first air inlet 22 and enters the notch through the gas flow channel 21, and finally replenishes the combustion chamber 2 with combustion-supporting gas, so that the gas is fully combusted and the utilization rate is improved.

[0024] Furthermore, such as Figure 2As shown in Figure 3, the catalytic separator includes a first separator 41 and a second separator arranged in pairs. The first separator 41 is a flat plate structure, and the upper and lower ends of the first separator 41 are provided with second air inlets 42. The air entering through the first air inlets 42 is heated through the gas flow channel 21 to improve combustion efficiency and reduce gas waste. Furthermore, the second air inlets 42 at the upper and lower ends ensure the supplementary combustion gas for primary and secondary combustion in the combustion chamber 2. The second separator has a "Z" shaped structure and is composed of a first plate 31, a second plate 32, and a third plate 33 from top to bottom. The third plate 33 is vertically arranged, with the bottom end of the first plate 31 connected to the top end of the second plate 32 and located close to the shell of the combustion chamber 2. The second plate 32 is provided with a third air inlet 34. The main purpose of the third air inlet 34 is to supplement the middle of the combustion chamber 2 with air to improve combustion efficiency. The air entering through the first air inlet 22 is mainly free air intake. Of course, in some embodiments, a fan can also be provided to assist air intake. It should be noted that... Since the amount of gas required for combustion in the inner and outer flames is different, in this embodiment, to ensure the highest efficiency of the second air inlet 42 and the second air port in supplying the combustion chamber 2, the following settings are adopted: the distance between the first baffle 41 and the shell of the combustion chamber 2 is b, the distance between the third plate 33 and the shell of the combustion chamber is b, the shortest distance between the second plate 32 and the shell of the combustion chamber 2 is a, and the inclination angle with the horizontal plane is α, where a is 3b / 8 and α° is 55°; in addition, the first baffle 41 is inclined and the distance between the bottom end of the first baffle 41 and the shell of the combustion chamber 2 is a, and the distance between the top end of the first baffle 41 and the shell of the combustion chamber 2 is b. Correspondingly, the distance between the second plate 32 and the shell of the combustion chamber 2 is 3b / 8, ensuring the supply of combustion-supporting gas to the combustion chamber 2 by the second air inlet 42 and the third air inlet 34. In actual experiments, carbon monoxide emissions can be reduced by 2% to 10%, while the gas temperature rises faster per unit volume, resulting in high combustion efficiency.

[0025] Furthermore, the combustion chamber 2 of this invention is also corrosion-resistant. Specifically, in the prior art, the outer wall of the combustion chamber 2 is generally equipped with a coil. In use, cold water first passes through the coil outside the combustion chamber and then enters the pipe of the heat exchange chamber 1. This allows the coil outside the combustion chamber 2 to absorb the high temperature of the outer wall of the combustion chamber 2, thereby cooling the combustion chamber 2. It also avoids energy waste caused by heat loss from the outer wall of the combustion chamber 2. However, the water temperature inside the coil outside the combustion chamber 2 is generally around 30 degrees Celsius. Studies have found that microorganisms are more active at this water temperature and are more likely to corrode the coil. Therefore, the coil outside the combustion chamber 2 in the prior art is easily corroded and damaged. The combustion chamber 2 of this embodiment is provided with a gas flow channel 21. In use, cold air is continuously replenished into the gas flow channel 21, thereby effectively dissipating heat from the combustion chamber 2. This eliminates the need for a coil for heat dissipation, effectively avoiding corrosion. At the same time, the cooling effect also greatly reduces the material requirements of the combustion chamber 2. There is no need to use materials such as heat insulation boards; instead, common steel plates are used. This also greatly reduces costs.

[0026] In this embodiment, the heat exchange chamber 1 adopts the existing technical solution; the air intake pipe on the combustion chamber 2 mainly includes the gas intake pipe and the air intake pipe, both of which adopt the existing technical solution and can be pre-mixed or input separately. The exhaust pipe on the heat exchange chamber 1 is also the existing technical solution. The purpose of this invention is to reduce the carbon monoxide emission in the exhaust pipe and improve the combustion efficiency.

[0027] In addition, the first partition 41 and the second partition are catalytic partitions. The catalytic partitions are equipped with a combustion catalyst, mainly one of Pd, Pt, CuO, and MnO2. The mixture of fuel gas and air is oxidized and then discharged into the combustion chamber 2 for combustion, reducing the production of nitrogen oxides. Of course, oxidation also takes place in the combustion chamber 2 to avoid the production of carbon monoxide and directly produce carbon dioxide and water. Through the dual effects of preheating and catalysis, the production of nitrogen oxides is reduced.

[0028] Furthermore, in this embodiment, the catalytic separator is connected to the shell of the combustion chamber 2 via a support rod; it should be emphasized that the support rod is a thin rod; in addition, the combustion chamber 2 will produce a certain amount of water under the dual effects of catalysis and preheating, so a condensate drain pipe is also provided on the shell of the combustion chamber 2.

[0029] Example 2

[0030] like Figure 4 As shown, in this embodiment, the main structure is completely the same as in embodiment 1. The difference is that in this embodiment, an adjustment mechanism 5 is also provided. Its main purpose is to reduce the peak phenomenon caused by excessive internal gas volume when the water heater is ignited, which may lead to instantaneous explosion and back-pushing phenomenon, and reduce the lifespan of the water heater.

[0031] In this embodiment, the following configuration is adopted: the intake pipe of the combustion chamber 2 is a venturi pipe 51, the outlet of the venturi pipe 51 is connected to the combustion chamber 2, the intake pipe of the venturi pipe 51 is connected to the intake fan 53, and the throat of the venturi pipe 51 is connected to the gas pipe 52; the venturi pipe 51 serves the purpose of thorough mixing.

[0032] Furthermore, the throat of the venturi tube 51 is provided with an adjustment mechanism 5, which includes:

[0033] A first magnet 54 and a second magnet 55 are symmetrically arranged. The first magnet 54 and the second magnet 55 are arranged perpendicular to the throat tube and their adjacent ends are attracted to each other, which is N-S attraction. The first magnet 54 is wrapped by a first shell that connects to the throat tube and slides inside the first shell into the throat tube. The second magnet 55 is wrapped by a second shell that connects to the throat tube and slides inside the second shell into the throat tube.

[0034] The other end of the first magnet 54 is connected to the end of the first housing away from the throat via a spring 59, and the other end of the second magnet 55 is connected to the end of the second housing away from the throat via a spring 59; when the first magnet 54 and the second magnet 55 are demagnetized, they separate under the action of the spring 59.

[0035] A first coil 56 is fitted onto the outer side of the first housing, and a second coil 58 is fitted onto the outer side of the second housing. The main purpose of the first coil 56 and the second coil 58 is to restore the magnetic force of the first magnet 54 and the second magnet 55. The process involves energizing the first coil 56 and the second coil 58 to magnetize the first magnet 54 and the second magnet 55. It should be emphasized that the two coils are in opposite directions. In this embodiment, the first magnet 54 and the second magnet 55 in the middle are magnetized by the coils, and then they attract each other. The first magnet 54 and the second magnet 55 can be made of soft iron or silicon steel. Since they demagnetize quickly when the power is cut off, the opening of the two can be controlled directly by cutting off the power. Alternatively, they can be made of materials such as neodymium iron boron, which can retain a certain amount of magnetism after magnetization, achieving the effect of mutual attraction. Or, rare metals can be used. Theoretically, metals can be magnetized an unlimited number of times, meeting the requirements of multiple ignitions.

[0036] An igniter 57 is provided inside the throat and above the first or second housing; for example Figure 5As shown, the first magnet 54 has a first opening 61 at its end, and the second magnet 55 has a second opening 62 at its end. When the first magnet 54 and the second magnet 55 are in contact, the first opening 61 and the second opening 62 form a through hole 60. When the first magnet 54 and the second magnet 55 are in contact, combustible gas passes through the through hole 60 formed by the first opening 61 and the second opening 62. At this time, because the through hole 60 is small, the amount of combustible gas is very small. When ignited, the cavity volume inside the combustion chamber 2 is relatively large compared to the amount of combustible gas, which can effectively absorb the peak and avoid generating a large backflow, thus shortening the life of the water heater. If neodymium iron boron is used for the first magnet 54 and the second magnet 55, it will be demagnetized due to the high temperature of combustion after successful ignition. Specifically, the demagnetization temperature of neodymium iron boron is 300 degrees Celsius, while the combustion temperature of natural gas can generally reach 800 degrees Celsius. The outer flame temperature is sufficient for demagnetization. If the temperature is not reached, the magnetic force can be reduced. As the magnetic force decreases, the through hole 60 becomes larger and larger, and the flame becomes larger and larger. Figures 5 to 6 The change completes the expansion of the through hole 60, achieving full air intake and ensuring the normal operation of the combustion chamber 2 while avoiding the spike phenomenon during ignition.

[0037] It should be noted that if the first magnet 54 and the second magnet 55 are made of soft iron or silicon steel, they will lose their magnetism when the power is off, thereby achieving the purpose of enlarging the through hole 60. In addition, the operation of the first coil 56 and the second coil 58 is controlled by a microcontroller or PLC, which can be integrated into the original controller of the gas water heater. It will not be described in detail here, as it is something that those skilled in the art should know and understand.

[0038] Finally, it should be noted that this embodiment only describes in detail the implementation and principle of the main inventive points. For other structures of the water heater, existing technical solutions can be used, such as the control methods for gas and air volume, and the control methods for water supply and gas flow, etc., all of which adopt existing technical solutions.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An environmentally friendly gas water heater, comprising a heat exchange chamber (1) and a combustion chamber (2) from top to bottom, wherein the combustion chamber (2) is provided with an air inlet pipe and the heat exchange chamber (1) is provided with a flue pipe, characterized in that, The combustion chamber (2) is cuboid structure and a catalytic partition is arranged in the combustion chamber (2), the catalytic partition and the shell of the combustion chamber (2) form a gas flow channel (21), a gap is left between the top of the catalytic partition and the top of the shell of the combustion chamber (2), a first air inlet hole (22) is arranged on the shell of the combustion chamber (2) and close to the bottom of the catalytic partition; The catalytic partition comprises a first partition (41) and a second partition arranged in pairs, the first partition (41) is flat structure, second air inlet holes (42) are arranged on the upper and lower ends of the first partition (41), the second partition is "Z" shape structure and comprises a first plate (31), a second plate (32) and a third plate (33) from top to bottom, the third plate (33) is arranged vertically, the bottom end of the first plate (31) and the top end of the second plate (32) are connected and arranged close to the shell of the combustion chamber (2), third air inlet holes (34) are arranged on the second plate (32); The distance between the first partition (41) and the shell of the combustion chamber (2) is b, the distance between the third plate (33) and the shell of the combustion chamber (2) is b, the shortest distance between the second plate (32) and the shell of the combustion chamber (2) is a, the inclination angle between the second plate (32) and the horizontal plane is α, b / 4 The air inlet pipe of the combustion chamber (2) is a venturi tube (51), the air outlet of the venturi tube (51) is communicated with the combustion chamber (2), the air inlet pipe of the venturi tube (51) is communicated with an air inlet fan (53), a gas pipe (52) is connected to the throat of the venturi tube (51); The throat of the venturi tube (51) is provided with an adjusting mechanism (5), which comprises: Symmetrically arranged first magnet (54) and second magnet (55), the first magnet (54) and the second magnet (55) are arranged perpendicular to the throat and the adjacent ends of the two are arranged to attract each other, the first magnet (54) is wrapped by a first shell communicated with the throat and the first magnet (54) is arranged to slide into the throat in the first shell; the second magnet (55) is wrapped by a second shell communicated with the throat and the second magnet (55) is arranged to slide into the throat in the second shell; The other end of the first magnet (54) is connected to the end of the first shell away from the throat by a spring (59), the other end of the second magnet (55) is connected to the end of the second shell away from the throat by a spring (59); The outer side of the first shell is sleeved with a first coil (56), the outer side of the second shell is sleeved with a second coil (58), the first coil (56) and the second coil (58) are arranged to be electrified; A igniter (57) is arranged in the throat and above the first shell or the second shell; The end of the first magnet (54) is provided with a first opening (61), and the end of the second magnet (55) is provided with a second opening (62), when the first magnet (54) and the second magnet (55) contact, the first opening (61) and the second opening (62) form a through hole (60).

2. The environmentally friendly gas water heater of claim 1, wherein The first partition plate (41) is obliquely arranged, the distance between the bottom end of the first partition plate (41) and the shell of the combustion chamber (2) is a, and the distance between the top end of the first partition plate (41) and the shell of the combustion chamber (2) is b.

3. The environmentally friendly gas water heater of claim 1, wherein The catalytic partition plate is covered with a combustion catalyst, and the combustion catalyst is one of Pd, Pt, CuO and MnO2.

4. The environmentally friendly gas water heater of claim 3, wherein, The catalytic partition plate is connected to the shell of the combustion chamber (2) through a supporting rod.

5. The environmentally friendly gas water heater of claim 4, wherein, The shell of the combustion chamber (2) is provided with a condensed water discharge pipe.

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