Gas combustion device

Abstract

The utility model provides a fuel gas combustion device. The fuel gas combustion device comprises a base; the gas part is arranged on the base; the fresh air part is arranged on the base; the nozzle part is arranged on the base and connected with the fresh air part; the air adjusting part is arranged on the base, and the nozzle part comprises a big fire nozzle connected with the fresh air part; the small fire nozzle is connected with the fresh air part; and at least one group of air inlets are arranged on the big fire nozzle and the small fire nozzle. A set of combustion structure with good combustion sufficiency and high energy-saving performance is provided for the fuel gas heating device, an existing single-hole type gas inlet is replaced by the gas inlet formed by the multiple laser micropores, and under the condition that the gas inflow is equivalent, air is dispersed after entering the nozzle part and mixed with fuel gas entering the nozzle part better, so that the fuel gas heating effect is improved. The fuel gas combustion sufficiency is better, the fuel gas loss is reduced, the energy-saving effect is achieved, nitrides such as nitric oxide after combustion are fewer, and the environmental protection property is high.

Description

Technical Field

[0001] The utility model relates to gas combustion, in particular to a gas combustion device, in particular to a gas combustion device with two-stage firepower. Background Art

[0002] Gas combustion plays a vital role in water heaters or steam heaters. It generates heat by burning fuel and provides a heat source for the water heater or steam heater.

[0003] Existing gas combustion devices are basically divided into two categories: one is natural convection gas-air mixing type, and the other is gas-air forced mixing type. In natural convection type, gas and air are mixed in a mixing chamber through convection and then burn after flowing out of the mixing chamber. Its representatives are harmonica-type fire grate combustion devices and tubular combustion devices. The advantages of natural convection combustion devices are: low noise, no need for fans to pressurize the air, and the disadvantages are that the combustion power of each fire grate is low, each fire grate is only about 1 kilowatt, and additional fire grates are needed for high-power heating; the advantages of forced mixing combustion devices are: high power, a single one can reach tens or even hundreds of kilowatts of thermal power, and its disadvantages are that the air inlets are concentrated and not dispersed enough, and a fan is needed to pressurize the air so that the air is mixed with the gas in a very small mixing chamber and then released for combustion, and the noise is loud.

[0004] During the combustion of gas-fired grate, a fresh air inlet needs to be opened so that the oxygen in the fresh air can be combined with the gas and then burned to achieve heating of the heated object. However, the fresh air inlet of the existing gas-fired grate is a single-group air inlet structure with a larger diameter, resulting in poor dispersion of the fresh air after entering the nozzle, limited sufficiency of the mixing of fresh air and gas, and part of the gas cannot be fully burned, resulting in a large waste of gas. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a gas combustion device, which adopts a component consisting of a base, a gas part, a fresh air part, a nozzle part, a harmonica-shaped fire grate and an adjusting air part, so as to provide a set of combustion structures with good combustion completeness and high energy saving for the gas heating device, and replace the existing single-hole air inlet with an air inlet formed by multiple laser micropores. Under the condition of equivalent air intake volume, the air is more dispersed after entering the nozzle part, and is better mixed with the gas entering the nozzle part, so that the gas combustion completeness is better.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A gas combustion device, comprising:

[0008] Base;

[0009] A gas unit, which is arranged on the base;

[0010] The fresh air part is set on the base;

[0011] The nozzle part is arranged on the base and connected with the fresh air part;

[0012] A harmonica-shaped fire bar connected to the nozzle section;

[0013] The wind regulating part is arranged on the base.

[0014] In a preferred embodiment, the nozzle portion comprises:

[0015] The large fire nozzle is connected to the fresh air section;

[0016] Small fire nozzle, connected to the fresh air part;

[0017] At least one group of air inlets is provided, which is arranged on the high-fire nozzle and the low-fire nozzle.

[0018] In a preferred embodiment, the gas unit comprises:

[0019] A gas valve seat connected to the base;

[0020] High-fire solenoid valve, connected to the gas valve seat;

[0021] Low-fire solenoid valve, connected to the gas valve seat;

[0022] The gas pipe is connected to the nozzle portion.

[0023] In a preferred embodiment, the fresh air unit comprises:

[0024] Fresh air vestibule, connected to the nozzle part;

[0025] The wind damper seat is set on the fresh air vestibule;

[0026] High-temperature fresh air inlet, connected to the fresh air vestibule;

[0027] The large fire fresh air chamber is arranged on the air damper seat and connected to the large fire nozzle;

[0028] The small fire fresh air chamber is arranged on the air damper seat and connected with the small fire nozzle;

[0029] The fresh air partition plate is arranged on the air partition damper seat.

[0030] In a preferred embodiment, the air regulating unit comprises:

[0031] The air damper guide rail is arranged on the air damper seat;

[0032] The fresh air damper movable plate is arranged on the guide rail of the air damper;

[0033] An electromagnetic tractor is arranged on the fresh air vestibule;

[0034] The connecting rod is connected with the electromagnetic traction device and the fresh air brake movable plate.

[0035] In a preferred embodiment, a large fire air inlet corresponding to the large fire fresh air chamber is provided on the air dividing damper seat, and three groups of large fire air inlets are arranged. A group of small fire air inlets corresponding to the small fire fresh air chamber is provided on the air dividing damper seat away from the bottom of the large fire fresh air chamber.

[0036] In a preferred embodiment, the fresh air damper movable plate is provided with air intake grille openings corresponding to the high-fire air inlet and the low-fire air inlet.

[0037] In a preferred embodiment, each group of the air inlets consists of twenty laser microholes.

[0038] In a preferred embodiment, a damper is provided at the air inlet end of the high-temperature fresh air inlet, and a damper adjusting screw is provided at the top of the damper.

[0039] In a preferred embodiment, a main solenoid valve is connected to the gas valve seat, an air pressure switch is provided at the air inlet end of the main solenoid valve, a gas filter is connected to the air inlet end of the air pressure switch, and a gas inlet is provided at the bottom of the gas filter.

[0040] The above solution of the utility model includes at least the following beneficial effects:

[0041] The above scheme of the present utility model utilizes components consisting of a base, a gas part, a fresh air part, a nozzle part, a harmonica-shaped fire grate and an adjusting air part to provide a gas heating device with a combustion device with good gas combustion completeness and high energy saving. The air inlet structure formed by multiple laser micropores replaces the structure of the single-hole air inlet on the existing gas heating device, so that the air intake of the air inlet of the present application has better air dissipation when the air intake volume is equivalent to the air intake volume of the existing fire grate air inlet. After the external air enters the nozzle part through the air inlet, the high dissipation makes the air and the gas entering the nozzle part mix more fully, so that the combustion completeness of the gas during combustion is greatly improved, and the situation that the gas combustion is not complete and the gas is directly discharged is reduced, thereby reducing the loss of gas and achieving the effect of energy saving. At the same time, the gas that is fully burned in the nozzle part of the present application produces less nitrogen oxides such as nitric oxide after combustion, and is highly environmentally friendly.

[0042] The above scheme of the utility model, through the components composed of a high-fire nozzle and a low-fire nozzle, realizes providing a set of combustion medium supply parts for the combustion device, which are matched with the large-fire and small-fire combined combustion. Because the temperature of the gas after combustion has an upper limit, at the time of initial ignition and in the intervals when the heated object is replaced, the heated object is heated by the high-fire nozzle and the small-fire nozzle. After the heating temperature reaches the upper limit, the fresh air part is operated to close the air intake of the high-fire fresh air chamber and the air supply of the high-fire solenoid valve, leaving only the small-fire nozzle to work, and the temperature of the heated object is maintained by the small-fire nozzle. During this period, a circulating pump is arranged, and the circulating pump is used to assist in adjusting the flow rate of the high-temperature steam in the heating environment, so that the high-temperature steam generated by the combustion flows in the heated object, thereby ensuring the efficiency of combustion and heating while reducing the waste of gas energy, and having good energy-saving performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is an overall schematic diagram of a gas combustion device of the utility model;

[0044] Figure 2 It is a top cross-sectional schematic diagram of a gas combustion device of the utility model;

[0045] Figure 3 It is a side cross-sectional schematic diagram of a gas combustion device of the utility model;

[0046] Figure 4 This is a schematic diagram of the main view of a wind damper seat of a gas combustion device of the utility model;

[0047] Figure 5 This is a schematic diagram of a wind gate guide rail of a gas combustion device of the utility model;

[0048] Figure 6 The utility model is a schematic diagram of a fresh air damper movable plate of a gas combustion device.

[0049] In the figure: 1. base; 2. gas valve seat; 3. high-fire solenoid valve; 4. low-fire solenoid valve; 5. electromagnetic tractor; 6. connecting rod; 7. nozzle part; 701. high-fire nozzle; 702. low-fire nozzle; 703. air inlet; 8. air damper seat; 9. high-fire air inlet; 10. low-fire air inlet; 11. fresh air damper movable plate; 12. fresh air vestibule; 13. high-temperature fresh air inlet; 14. high-fire fresh air chamber; 15. low-fire fresh air chamber; 16. fresh air partition; 17. air damper guide rail; 18. harmonica-shaped fire grate; 19. gas pipe; 20. air intake grille; 21. air door; 22. air door adjustment screw; 23. main solenoid valve; 24. air pressure switch; 25. gas filter; 26. gas inlet. DETAILED DESCRIPTION

[0050] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0051] Example 1

[0052] like Figures 1 to 6 As shown, the utility model provides a gas combustion device, comprising:

[0053] Base 1;

[0054] The gas unit is arranged on the base 1;

[0055] A fresh air unit is arranged on the base 1;

[0056] The nozzle part 7 is arranged on the base 1 and connected with the fresh air part;

[0057] A harmonica-shaped fire bar 18 connected to the nozzle portion 7;

[0058] The wind regulating part is arranged on the base 1.

[0059] Wherein, the nozzle portion 7 comprises:

[0060] The large fire nozzle 701 is connected to the fresh air section;

[0061] A small fire nozzle 702, connected to the fresh air part;

[0062] There are 5 groups of air inlets 703, and 3 groups of air inlets 703 are set on the high-fire nozzle 701, and 2 groups of air inlets 703 are set on the low-fire nozzle 702. Each group of air inlets 703 is composed of 5-20 air holes, and the 5-20 air holes are arranged in an anchor shape; the diameter of the air hole is 0.05-1mm, and the anchor handle of the air inlet 703 is in the direction of the fresh wind.

[0063] Wherein, the gas unit comprises:

[0064] The gas valve seat 2 is connected to the base 1;

[0065] A high-fire solenoid valve 3 is connected to the gas valve seat 2;

[0066] A low-fire solenoid valve 4 is connected to the gas valve seat 2;

[0067] The gas pipe 19 is connected to the nozzle portion 7 .

[0068] Wherein, the fresh air department includes:

[0069] A fresh air vestibule 12 connected to the nozzle portion 7;

[0070] The wind damper seat 8 is arranged on the fresh air vestibule 12;

[0071] A high-temperature fresh air inlet 13 is connected to the fresh air vestibule 12;

[0072] The large fire fresh air chamber 14 is arranged on the air damper seat 8 and connected to the large fire nozzle 701;

[0073] The small fire fresh air chamber 15 is arranged on the air damper seat 8 and connected to the small fire nozzle 702;

[0074] The fresh air partition plate 16 is disposed on the air partition damper seat 8 .

[0075] Wherein, the air regulating unit comprises:

[0076] The air damper guide rail 17 is arranged on the air damper seat 8;

[0077] The fresh air damper movable plate 11 is arranged on the air damper guide rail 17;

[0078] The electromagnetic tractor 5 is arranged on the fresh air vestibule 12;

[0079] The connecting rod 6 is connected with the electromagnetic traction device 5 and the fresh air damper movable plate 11.

[0080] Among them, a large fire air inlet 9 corresponding to the large fire fresh air chamber 14 is opened on the air dividing damper seat 8, and three groups of large fire air inlets 9 are arranged. The air dividing damper seat 8 is provided with a group of small fire air inlets 10 corresponding to the small fire fresh air chamber 15 away from the bottom of the large fire fresh air chamber 14.

[0081] The fresh air damper movable plate 11 is provided with air intake grille openings 20 corresponding to the high-fire air inlet 9 and the low-fire air inlet 10 .

[0082] The air inlet end of the high-temperature fresh air inlet 13 is provided with a damper 21 , and the top of the damper 21 is provided with a damper adjusting screw 22 .

[0083] Wherein, the gas valve seat 2 is connected to a main solenoid valve 23 .

[0084] Example 2

[0085] like Figures 1 to 6 As shown, the utility model provides a gas combustion device, comprising:

[0086] Base 1;

[0087] The gas unit is arranged on the base 1;

[0088] A fresh air unit is arranged on the base 1;

[0089] The nozzle part 7 is arranged on the base 1 and connected with the fresh air part;

[0090] A harmonica-shaped fire bar 18 connected to the nozzle portion 7;

[0091] The wind regulating part is arranged on the base 1.

[0092] Wherein, the nozzle portion 7 comprises:

[0093] The large fire nozzle 701 is connected to the fresh air section;

[0094] A small fire nozzle 702, connected to the fresh air part;

[0095] There are 7 groups of air inlets 703, 4 groups of air inlets 703 are arranged on the high-fire nozzle 701, and 3 groups of air inlets 703 are arranged on the low-fire nozzle 702. Each group of air inlets 703 is composed of 10-30 laser microholes; the 10-30 laser microholes are arranged in a fan shape, the diameter of each laser microhole is less than 0.05-1mm, and the fan handle is the direction of the fresh air.

[0096] Wherein, the gas unit comprises:

[0097] The gas valve seat 2 is connected to the base 1;

[0098] A high-fire solenoid valve 3 is connected to the gas valve seat 2;

[0099] A low-fire solenoid valve 4 is connected to the gas valve seat 2;

[0100] The gas pipe 19 is connected to the nozzle portion 7 .

[0101] Wherein, the fresh air department includes:

[0102] A fresh air vestibule 12 connected to the nozzle portion 7;

[0103] The wind damper seat 8 is arranged on the fresh air vestibule 12;

[0104] A high-temperature fresh air inlet 13 is connected to the fresh air vestibule 12;

[0105] The large fire fresh air chamber 14 is arranged on the air damper seat 8 and connected to the large fire nozzle 701;

[0106] The small fire fresh air chamber 15 is arranged on the air damper seat 8 and connected to the small fire nozzle 702;

[0107] The fresh air partition plate 16 is disposed on the air partition damper seat 8 .

[0108] Wherein, the air regulating unit comprises:

[0109] The air damper guide rail 17 is arranged on the air damper seat 8;

[0110] The fresh air damper movable plate 11 is arranged on the air damper guide rail 17;

[0111] The electromagnetic tractor 5 is arranged on the fresh air vestibule 12;

[0112] The connecting rod 6 is connected with the electromagnetic traction device 5 and the fresh air damper movable plate 11.

[0113] Among them, a large fire air inlet 9 corresponding to the large fire fresh air chamber 14 is opened on the air dividing damper seat 8, and three groups of large fire air inlets 9 are arranged. The air dividing damper seat 8 is provided with a group of small fire air inlets 10 corresponding to the small fire fresh air chamber 15 away from the bottom of the large fire fresh air chamber 14.

[0114] The fresh air damper movable plate 11 is provided with air intake grille openings 20 corresponding to the high-fire air inlet 9 and the low-fire air inlet 10 .

[0115] The air inlet end of the high-temperature fresh air inlet 13 is provided with a damper 21 , and the top of the damper 21 is provided with a damper adjusting screw 22 .

[0116] Among them, the gas valve seat 2 is connected to a main solenoid valve 23, the air inlet end of the main solenoid valve 23 is provided with a gas pressure switch 24, the air inlet end of the gas pressure switch 24 is connected to a gas filter 25, and the bottom of the gas filter 25 is provided with a gas inlet 26; adding the gas pressure switch 24, the steam furnace is forced to stop running when the gas pressure is lower than a certain value, and solves the problem of backfire when the gas pressure is too low due to the user's inertia of not caring about the gas cylinder pressure and only changing the gas cylinder.

[0117] The fuel gas filter 25 filters the fuel gas to solve the problem of nozzle clogging.

[0118] Working principle: When in use, the combustion device of the present application is installed in the furnace cavity of the water heater or steam heating equipment, and the heat exhaust end of the combustion device of the present application is connected to the heat exchanger of the water heater or steam heating equipment, so that the high-temperature gas generated by the combustion device enters the heat exchanger of the steam heating equipment, and the high-temperature gas entering the heat exchanger exchanges heat with the water source entering the heat exchanger, thereby generating steam thermal energy, and the high-temperature steam is used to heat the heated object in the steam heating equipment;

[0119] During this period, a set of fans are installed on the heat exchanger assembly in the steam boiler. The fans draw air from the inside of the heat exchanger assembly and discharge it to the outside. Under the action of the fans, the exhaust gas discharged into the heat exchanger by the combustion device of the present application can be discharged to the outside. As the fans draw the gas in the heat exchanger to the outside, the combustion device of the present application will continuously generate negative pressure. Therefore, the fresh air from the outside will flow into the high-temperature fresh air inlet 13 from the damper 21 based on the negative pressure, so as to achieve the effect of the fresh air from the outside actively entering the combustion device. Therefore, compared with the existing combustion structure that forces the air to be added to the burner, the active air intake structure of the combustion device of the present application has lower noise and better performance during use.

[0120] At the same time, in order to maintain a fixed ratio of fresh air to gas, the present application is provided with a gas pressure switch 24 and a damper 21 to control the flow of gas and fresh air when entering the combustion part, so that the gas and fresh air enter the combustion part in the required ratio;

[0121] Before the combustion heating operation, the gas valve seat 2 of the present application is connected to the gas supply pipeline of the work site, and the electrical components in the present application are centrally controlled by the PLC controller. When the heated object is heated for the first time, the electromagnetic traction device 5 drives the connecting rod 6 to push up the fresh air gate movable plate 11, so that the air intake grille opening 20 overlaps with the high-fire air inlet 9 and the low-fire air inlet 10, so that the fresh air can enter the high-fire fresh air chamber 14 and the low-fire fresh air chamber 15 respectively, and enter the high-fire nozzle 701 and the low-fire nozzle 702 respectively through the air inlet 703. After the high-fire solenoid valve 3 and the low-fire solenoid valve 4 are opened for ventilation, the gas enters the high-fire nozzle 701 and the low-fire nozzle 702 respectively through the gas pipe 19, and passes through The air inlet 703 formed by multiple laser micropores replaces the existing single-hole air inlet. Under the condition of equivalent air intake volume, the air entering the nozzle can be more dispersed and better mixed with the gas entering the nozzle, so that the combustion efficiency after the gas is ignited is better. After the heating temperature reaches the upper limit, the electromagnetic traction device 5 drives the connecting rod 6 to pull down the fresh air gate movable plate 11, so that the fresh air gate movable plate 11 after being pulled down closes the high-fire air inlet 9, and then closes the high-fire solenoid valve 3, leaving only the air intake in the low-fire nozzle 702 to maintain the temperature of the heated object until the heating of the heated object is completed, and the heating work is completed; thereby, a combustion device with good gas combustion efficiency and high energy saving is provided for water heaters or steam heating equipment.

[0122] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A gas combustion device, characterized in that: include: Base (1); A gas unit, arranged on the base (1); A fresh air unit is arranged on the base (1); The nozzle part (7) is arranged on the base (1) and connected to the fresh air part; A harmonica-shaped fire bar (18) connected to the nozzle portion (7); The wind regulating part is arranged on the base (1).

2. The gas combustion device according to claim 1, characterized in that: The nozzle portion (7) comprises: A large fire nozzle (701) is connected to the fresh air part; A small fire nozzle (702) connected to the fresh air part; At least one group of air inlets (703) is provided, and is arranged on the high-fire nozzle (701) and the low-fire nozzle (702).

3. The gas combustion device according to claim 2, characterized in that: The gas unit comprises: A gas valve seat (2) connected to the base (1); A high-fire electromagnetic valve (3) connected to the gas valve seat (2); A low-fire electromagnetic valve (4) connected to the gas valve seat (2); The gas pipe (19) is connected to the nozzle part (7).

4. The gas combustion device according to claim 3, characterized in that: The fresh air department includes: A fresh air vestibule (12) connected to the nozzle portion (7); A wind damper seat (8) is arranged on the fresh air vestibule (12); A high-temperature fresh air inlet (13) connected to the fresh air vestibule (12); A large fire fresh air chamber (14) is arranged on the air damper seat (8) and connected to the large fire nozzle (701); A low-fire fresh air chamber (15) is disposed on the air damper seat (8) and connected to the low-fire nozzle (702); The fresh air partition plate (16) is arranged on the air partition damper seat (8).

5. The gas combustion device according to claim 4, characterized in that: The air regulating unit comprises: The air damper guide rail (17) is arranged on the air damper seat (8); A fresh air damper movable plate (11) is arranged on the air damper guide rail (17); An electromagnetic tractor (5) is arranged on the fresh air vestibule (12); The connecting rod (6) is connected with the electromagnetic tractor (5) and the fresh air damper movable plate (11).

6. The gas combustion device according to claim 5, characterized in that: The air damper seat (8) is provided with a large fire air inlet (9) corresponding to the large fire fresh air chamber (14), and the large fire air inlet (9) is provided in three groups. The air damper seat (8) is provided with a group of small fire air inlets (10) corresponding to the small fire fresh air chamber (15) away from the bottom of the large fire fresh air chamber (14).

7. The gas combustion device according to claim 6, characterized in that: The fresh air damper movable plate (11) is provided with an air intake grille opening (20) corresponding to the high-fire air intake opening (9) and the low-fire air intake opening (10).

8. The gas combustion device according to claim 7, characterized in that: Each group of the air inlets (703) consists of 5-30 laser microholes.

9. The gas combustion device according to claim 8, characterized in that: The air inlet end of the high-temperature fresh air inlet (13) is provided with a damper (21), and the top of the damper (21) is provided with a damper adjusting screw (22).

10. The gas combustion device according to claim 9, characterized in that: The gas valve seat (2) is connected to a main solenoid valve (23), an air pressure switch (24) is provided at the air inlet end of the main solenoid valve (23), a gas filter (25) is connected to the air inlet end of the gas pressure switch (24), and a gas inlet (26) is provided at the bottom of the gas filter (25).

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