Internal and external direct injection combustor structure

Abstract

The utility model discloses an internal and external direct injection combustor structure which comprises a central air inlet horn furnace end, an external air inlet seat and an external direct injection pipeline. The outer gas inlet seat is arranged at the top of the central gas inlet horn furnace head and is fixedly connected with the central gas inlet horn furnace head, a central gas outlet hole is formed in the top of the central gas inlet horn furnace head, a central gas outlet pipeline matched with the central gas outlet hole is arranged in the middle of the outer gas inlet seat, and gas enters from the central gas inlet horn furnace head and is directly exhausted through the central gas outlet pipeline. An outer air inlet pipeline is arranged on the outer side of the outer air inlet seat, an outer air inlet pipeline air inlet head is arranged on the outer side face of the outer air inlet pipeline, a plurality of outer air inlet pipeline air outlet heads are arranged on the top of the outer air inlet pipeline, and the bottom of the outer direct injection pipeline is arranged on the outer air inlet pipeline air outlet heads. Fuel gas enters from the gas inlet head of the outer gas inlet pipeline, passes through the gas outlet head of the outer gas inlet pipeline and then is exhausted from the outer direct injection pipeline.

Description

Technical Field

[0001] This utility model relates to the field of burners, and in particular to an internal and external direct injection burner structure. Background Technology

[0002] Most existing burners adopt a dual-intake design, with the central intake and direct exhaust forming an inner flame, and the outer intake and inclined exhaust forming an outer flame. However, because the outer side is not a direct exhaust design, this design results in relatively higher burner noise and lower combustion efficiency. Utility Model Content

[0003] The main purpose of this invention is to provide an internal and external direct injection burner structure that uses direct injection for both internal and external combustion, and employs an inner and outer burner cap with anti-clogging structures, thereby effectively improving thermal efficiency and reducing noise.

[0004] This utility model proposes an internal and external direct injection burner structure, including a central air intake trumpet burner head, an external air intake seat, and an external direct injection pipe;

[0005] The external air inlet seat is fixedly connected to the top of the central air inlet horn burner head. The top of the central air inlet horn burner head is provided with a central air outlet hole. The external air inlet seat is provided with a central air outlet pipe that is adapted to the central air outlet hole. Gas enters from the central air inlet horn burner head and exits directly through the central air outlet pipe.

[0006] An external air intake pipe is provided on the outer side of the external air intake seat. An external air intake head is provided on the outer side of the external air intake pipe. Multiple external air intake outlets are provided on the top of the external air intake pipe. The bottom of the external direct injection pipe is located on the external air intake outlet. The gas enters from the external air intake head and exits from the external direct injection pipe after passing through the external air intake outlet.

[0007] Preferably, it also includes a center distributor cap, which is disposed on the top of the center exhaust pipe.

[0008] Preferably, it also includes multiple external flame spreaders, which are disposed on the external direct injection pipe.

[0009] Preferably, the bottom radius of the external direct injection pipe is larger than the air outlet of the external air intake pipe, so that the bottom of the external direct injection pipe can be fitted onto the air outlet of the external air intake pipe, thereby fixing the external direct injection pipe to the external air intake seat.

[0010] Preferably, the bottom side of the external direct injection pipe has multiple external direct injection pipe side air inlets, through which air enters and mixes with the fuel gas.

[0011] Preferably, it also includes a connecting plate, which is positioned on the outer air intake seat. The connecting plate and the outer direct injection pipe are integrally formed. The outer direct injection pipe is suspended and correspondingly positioned on the upper side of the air outlet head of the outer air intake pipe. A nozzle is provided on the air outlet head of the outer air intake pipe. Air mixes with the gas ejected from the nozzle in the gap between the bottom of the outer direct injection pipe and the nozzle.

[0012] Preferably, the outer air intake seat is provided with a positioning protrusion, and the connecting plate is provided with a positioning groove that matches the positioning protrusion. The positioning protrusion and the positioning groove cooperate to position and connect the connecting plate to the outer air intake seat.

[0013] The beneficial effects of the internal and external direct injection burner structure of this utility model are as follows:

[0014] By adopting a straight-through air outlet design for both the central air outlet pipe on the inner side of the air intake seat and the external direct injection pipe on the outer side, noise can be effectively reduced and thermal efficiency can be improved.

[0015] By adding multiple air inlets on the bottom side of the external direct injection pipe, it is easier for air to enter the external direct injection pipe from the side air inlets, thereby improving the overall thermal efficiency of the external direct injection pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a first embodiment of the internal and external direct injection burner structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the internal and external direct injection burner of this utility model, as shown in Embodiment 2.

[0018] Figure 3 This is a schematic diagram of the central air intake horn-shaped burner head of the internal and external direct injection burner structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the outer air inlet seat of the internal and external direct injection burner structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the external direct injection pipe in Embodiment 1 of the internal and external direct injection burner structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the connecting plate in Embodiment 2 of the internal and external direct injection burner structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the central flame distribution cap of the internal and external direct injection burner structure of this utility model;

[0023] Figure 8 This is a schematic diagram of the outer flame distribution cover of the internal and external direct injection burner structure of this utility model.

[0024] The diagram is labeled as follows: 1. Center air intake horn burner head, 2. External air intake seat, 3. External direct injection pipe, 4. Connecting plate, 5. Center flame spreader cover, 6. External flame spreader cover, 11. Center air outlet, 12. Burner head connecting hole, 21. External air intake seat connecting column, 22. Center air outlet pipe, 23. External air intake pipe, 24. Positioning protrusion, 31. Side air intake hole of external direct injection pipe, 41. Positioning groove, 231. Air inlet head of external air intake pipe, 232. Air outlet head of external air intake pipe.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] Reference Figure 1 , 3 4, 5, 7, and 8 present an embodiment of the internal and external direct injection burner structure of this utility model:

[0028] An internal and external direct injection burner structure includes a central air intake horn burner head 1, an external air intake seat 2, a central flame distribution cover 5, an external flame distribution cover 6, and an external direct injection pipe 3.

[0029] The central air intake horn burner 1 has four burner connection holes 12 on its bottom side. The central air intake horn burner 1 is connected to the external structure through two of the burner connection holes 12. The bottom of the central air intake horn burner 1 is connected to the gas pipeline. The top of the central air intake horn burner 1 has a central gas outlet hole 11.

[0030] The outer air inlet seat 2 has two outer air inlet seat connecting posts 21 at its bottom. These posts are connected to the remaining burner head connecting hole 12 via screws, thus connecting the outer air inlet seat 2 to the top of the central air inlet horn burner head 1. A central air outlet pipe 22, compatible with the central air outlet hole 11, is located in the middle of the outer air inlet seat 2. A central flame spreader cap 5 covers the top of the central air outlet pipe 22. Gas enters from the central air inlet horn burner head 1, flows directly through the central air outlet pipe 22, and then exits from the central flame spreader cap 5 for combustion.

[0031] An external air intake pipe 23 is provided on the outer side of the external air intake seat 2. An external air intake pipe inlet head 231 is provided on the outer surface of the external air intake pipe 23. Multiple external air intake pipe outlet heads 232 are provided on the top of the external air intake pipe 23. The bottom radius of the external direct injection pipe 3 is larger than that of the external air intake pipe outlet head 232, so that the bottom of the external direct injection pipe 3 can be fitted onto the external air intake pipe outlet head 232, thereby fixing the external direct injection pipe 3 to the external air intake seat 2. An external flame spreader 6 is placed on the top of the external direct injection pipe 3. The fuel gas enters from the external air intake pipe inlet head 231, passes through the external air intake pipe outlet head 232, and then flows directly through the external direct injection pipe 3, and then exits from the external flame spreader 6 and is burned. Multiple external direct injection pipe side air inlets 31 are provided on the bottom side of the external direct injection pipe 3. Air enters from the external direct injection pipe side air inlets 31 and mixes with the fuel gas.

[0032] Reference Figure 2 , 3 4, 6, 7, and 8 present another embodiment of the internal and external direct injection burner structure of this utility model:

[0033] An internal and external direct injection burner structure includes a central air intake horn burner head 1, an external air intake seat 2, a central flame distribution cover 5, an external flame distribution cover 6, a connecting plate 4, and an external direct injection pipe 3.

[0034] The central air intake horn burner 1 has four burner connection holes 12 on its bottom side. The central air intake horn burner 1 is connected to the external structure through two of the burner connection holes 12. The bottom of the central air intake horn burner 1 is connected to the gas pipeline. The top of the central air intake horn burner 1 has a central gas outlet hole 11.

[0035] Two external air intake base connecting posts 21 are provided at the bottom of the external air intake base 2. The external air intake base connecting posts 21 and the remaining burner head connecting hole 12 are connected by screws to connect the external air intake base 2 to the top of the central air intake horn burner head 1. A central air outlet pipe 22 adapted to the central air outlet hole 11 is provided in the middle of the external air intake base 2. The central burner cover 5 is placed on the top of the central air outlet pipe 22. Gas enters from the central air intake horn burner head 1 and passes directly through the central air outlet pipe 22, and then exits from the central burner cover 5 and is burned. An external air intake pipe 23 is provided on the outer side of the external air intake base 2. An external air intake pipe inlet head 231 is provided on the outer surface of the external air intake pipe 23, and multiple external air intake pipe outlet heads 232 are provided on the top of the external air intake pipe 23.

[0036] The connecting plate 4 and the external direct injection pipe 3 are integrally formed. The external air intake seat 2 is provided with a positioning protrusion 24, and the connecting plate 4 is provided with a positioning groove 41 that matches the positioning protrusion 24. Through the cooperation of the positioning protrusion 24 and the positioning groove 41, the connecting plate 4 is positioned and connected to the external air intake seat 2. The positioning protrusion is provided with a positioning protrusion connection hole, which is used to limit and fix the ignition needle and the sensing needle. The external direct injection pipe 3 is suspended and correspondingly positioned on the upper side of the external air intake pipe outlet head 232. A nozzle is provided on the external air intake pipe outlet head 232. Air mixes with the combustion gas ejected from the nozzle in the gap between the bottom of the external direct injection pipe 3 and the nozzle.

[0037] The top of the external direct injection pipe 3 extends from the top of the connecting plate 4, and the external flame spreader 6 covers the top of the external direct injection pipe 3. The gas enters the external air intake pipe from the air intake head 231 and then exits from the nozzle 232. After the gas is exited, it mixes with the air and passes through the external direct injection pipe 3 directly. Then it exits from the external flame spreader 6 and is burned.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An internal-external direct injection burner structure, characterized in that, it comprises a central air inlet horn burner, an outer air inlet seat and an outer direct injection pipeline; the outer air inlet seat is fixedly connected to the top of the central air inlet horn burner, the top of the central air inlet horn burner is provided with a central air outlet hole, the middle of the outer air inlet seat is provided with a central air outlet pipeline matched with the central air outlet hole, and gas is directly discharged from the central air inlet horn burner and the central air outlet pipeline; an outer air inlet pipeline is arranged on the outer side of the outer air inlet seat, an outer air inlet pipeline air inlet head is arranged on the outer side of the outer air inlet pipeline, a plurality of outer air inlet pipeline air outlet heads are arranged on the top of the outer air inlet pipeline, and the outer direct injection pipeline is arranged on the outer air inlet pipeline air outlet heads, gas enters from the outer air inlet pipeline air inlet head and is discharged from the outer direct injection pipeline after passing through the outer air inlet pipeline air outlet heads.

2. The inner and outer direct injection burner structure according to claim 1, wherein it further comprises a central ignition cap, which is arranged on the top of the central air outlet pipeline.

3. The inner and outer direct injection burner structure according to claim 1 or 2, characterized in that, it further comprises a plurality of outer ignition caps, which are arranged on the outer direct injection pipeline.

4. The inner and outer direct injection burner structure according to claim 1, wherein the bottom radius of the outer direct injection pipeline is greater than that of the outer air inlet pipeline air outlet head, so that the bottom of the outer direct injection pipeline can be sleeved on the outer air inlet pipeline air outlet head, thereby fixing the outer direct injection pipeline to the outer air inlet seat.

5. The inner and outer direct injection burner structure according to claim 1 or 4, wherein a plurality of outer direct injection pipeline side air inlet holes are arranged on the bottom of the side of the outer direct injection pipeline, air enters the outer direct injection pipeline side air inlet holes and mixes with the gas.

6. The inner and outer direct injection burner structure according to claim 1, wherein it further comprises a connecting disc, which is limitingly arranged on the outer air inlet seat and integrally formed with the outer direct injection pipeline, the outer direct injection pipeline is suspended and correspondingly arranged on the upper side of the outer air inlet pipeline air outlet head, a nozzle is arranged on the outer air inlet pipeline air outlet head, and air in the gap between the bottom of the outer direct injection pipeline and the nozzle mixes with the gas sprayed by the nozzle.

7. The inner and outer direct injection burner structure according to claim 6, wherein the outer air inlet seat is provided with a positioning lug, the connecting disc is provided with a positioning groove matched with the positioning lug, and the connecting disc is positioned and connected to the outer air inlet seat through cooperation of the positioning lug and the positioning groove.

Images