Combustion chamber of natural gas furnace

Abstract

The utility model belongs to the technical field of natural gas furnace combustion chambers, and particularly relates to a natural gas furnace combustion chamber which comprises a combustion chamber shell assembly, a combustion chamber inner container assembly is installed in the combustion chamber shell assembly, and a gas furnace combustion chamber inlet assembly is installed at the end of the combustion chamber shell assembly. The combustion chamber shell assembly comprises a first gas furnace combustion chamber shell, a sealing clamping block, a sealing clamping groove, a second gas furnace combustion chamber shell, a first mounting block, a fixing screw, a fixing nut and a second mounting block, the bottom of the first gas furnace combustion chamber shell is integrally connected with the sealing clamping block, and the sealing clamping groove is connected to the outer portion of the sealing clamping block in a clamped mode; according to the utility model, the trumpet-shaped combustion chamber shell is arranged, so that sufficient air can enter the afterburning chamber at the rear end conveniently, further, fuel gas can be combusted more sufficiently, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas furnace combustion chambers, in particular to a natural gas furnace combustion chamber. Background Art

[0002] Natural gas refers to a mixture of hydrocarbons and non-hydrocarbon gases naturally stored in strata. In petroleum geology, it usually refers to oilfield gas and gasfield gas, which is mainly composed of hydrocarbons and contains non-hydrocarbon gases.

[0003] In Chinese Patent 202122221947.3, the utility model belongs to the technical field of natural gas combustion chamber equipment, especially a natural gas combustion chamber with high efficiency thermal insulation, including an inner frame of the combustion chamber, the surface of the inner frame of the combustion chamber is a frame structure, and the outer surface of the inner frame of the combustion chamber is provided with a thermal insulation mechanism, and the thermal insulation mechanism includes a thermal insulation layer. The high efficiency thermal insulation and insulation natural gas combustion chamber achieves the use of a frame structure for the inner frame of the combustion chamber by setting a thermal insulation mechanism, so that it can achieve structural stability; the outer frame of the combustion chamber uses a folding plate splicing form, so that there is no connection point between the inner and outer plates, blocking the heat transfer channel; and filling a thermal insulation layer between the inner and outer plates to further improve the thermal insulation effect; and modifying the position and shape of the return air duct and the air supply duct to increase the ventilation volume, and setting a heat exchange liner at the return air duct to increase the air flow rate, increase the heat exchange efficiency, and effectively reduce the temperature in the combustion chamber.

[0004] The combustion chamber of an existing natural gas furnace has a combustion chamber shell that is usually a cylinder or rectangle with the same inner diameter at the front and back. During the intake process, air flows in from the front to the back. After part of the air enters the main combustion chamber first, the air content that can enter the rear combustion chamber will be less, and the flow rate will not be as fast as the front, and the oxygen supply is insufficient, which can easily affect the efficiency of gas combustion in the combustion chamber. After long-term use, carbon deposits may appear inside the combustion chamber, blocking the air inlet. The existing combustion chamber shell is usually an integral part and cannot be disassembled. It is difficult to clean the air inlet on the combustion liner installed inside it. If the air inlet is not cleaned for a long time, the blockage affects the air entering the combustion chamber, which can easily cause the problem of insufficient gas combustion.

[0005] Therefore, a natural gas furnace combustion chamber is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, the problem is that the combustion chamber shell of the existing natural gas furnace is usually a cylinder or rectangle with the same inner diameter at the front and back. During the air intake process, the air flows in from the front to the back. After part of the air enters the main combustion chamber first, the air content that can enter the rear combustion chamber will be less, and the flow rate will not be as fast as the front, and the oxygen supply is insufficient, which can easily affect the efficiency of the gas combustion inside the combustion chamber. After long-term use, carbon deposits may appear inside the combustion chamber, blocking the air inlet. The existing combustion chamber shell is usually an integral whole and cannot be disassembled. It is difficult to clean the air inlet on the combustion liner installed inside it. If the air inlet is not cleaned for a long time, the blockage affects the air entering the combustion chamber, which can easily cause the problem of insufficient gas combustion.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a natural gas furnace combustion chamber described in the utility model includes a combustion chamber shell assembly, a combustion chamber inner liner assembly is installed inside the combustion chamber shell assembly, and a gas furnace combustion chamber inlet assembly is installed at the end of the combustion chamber shell assembly, the combustion chamber shell assembly includes a first gas furnace combustion chamber shell, a sealing block, a sealing slot, a second gas furnace combustion chamber shell, a first mounting block, a fixing screw, a fixing nut, and a second mounting block, the bottom of the first gas furnace combustion chamber shell is integrally connected with the sealing block, and the outside of the sealing block is snap-connected with the sealing slot, and the bottom of the sealing slot is fixedly connected with the second gas furnace combustion chamber shell, the side of the first gas furnace combustion chamber shell is fixedly connected with the first mounting block, and the inside of the first mounting block is penetrated by a fixing screw, the bottom end of the fixing screw is threadedly connected with a fixing nut, and the top of the fixing nut is tightly fitted with the second mounting block.

[0008] Preferably, the shape of the first gas furnace combustion chamber shell is set to be an upwardly arched semi-trumpet shape, and the inner diameter of the first gas furnace combustion chamber shell is consistent with the inner diameter of the second gas furnace combustion chamber shell, and the shape of the second gas furnace combustion chamber shell is set to be a downwardly arched semi-trumpet shape.

[0009] Preferably, the sealing card block and the sealing card slot form a snap-fit ​​structure, and the outer wall of the sealing card block is tightly fitted with the inner wall of the sealing card slot, and the material of the sealing card block is set to graphene material.

[0010] Preferably, the combustion chamber inner liner assembly includes a gas furnace combustion chamber ignition zone, a natural gas fuel nozzle, an ignition device, a main combustion chamber air intake zone, a main combustion chamber air intake hole, a natural gas gas furnace main combustion chamber, a supplementary combustion chamber air intake zone, a supplementary combustion chamber air intake hole, a natural gas gas furnace supplementary combustion chamber, and a transition section. A natural gas fuel nozzle is installed on the side of the gas furnace combustion chamber ignition zone, and an ignition device is installed on the top of the gas furnace combustion chamber ignition zone. The end of the gas furnace combustion chamber ignition zone is connected to the main combustion chamber air intake zone, and the outer wall of the main combustion chamber air intake zone is provided with the main combustion chamber air intake hole, and the other end of the main combustion chamber air intake zone is connected to the natural gas gas furnace main combustion chamber. The other end of the natural gas gas furnace main combustion chamber is connected to the supplementary combustion chamber air intake zone, and the outer wall of the supplementary combustion chamber air intake zone is provided with the supplementary combustion chamber air intake hole, the side of the supplementary combustion chamber air intake zone is fixedly connected to the natural gas gas furnace supplementary combustion chamber, and the other side of the natural gas gas furnace supplementary combustion chamber is fixedly connected to the transition section.

[0011] Preferably, the main combustion chamber air inlet holes are arranged at equal intervals about the sides of the main combustion chamber air inlet area, and the shape of the main combustion chamber air inlet area is set to be trumpet-shaped, the materials of the main combustion chamber of the natural gas furnace and the supplementary combustion chamber of the natural gas furnace are set to be aluminosilicate ceramic materials, and the inner walls of the main combustion chamber of the natural gas furnace and the supplementary combustion chamber of the natural gas furnace are coated with nano-ceramic high-temperature resistant coatings.

[0012] Preferably, the gas furnace combustion chamber inlet assembly includes a combustion chamber air inlet, a first sealing gasket, a mounting flange, a second sealing gasket, and a bolt hole. The first sealing gasket is fixedly connected to the bottom of the combustion chamber air inlet, and the mounting flange is welded to the end of the combustion chamber air inlet. The second sealing gasket is fixedly connected to the side of the mounting flange, and a bolt hole is opened inside the second sealing gasket.

[0013] Preferably, the bolt holes are arranged at equal intervals inside the second sealing gasket, and the material of the second sealing gasket is set to graphene material, the combustion chamber air inlet and the first gas furnace combustion chamber shell are integrated, and the combustion chamber air inlet and the second gas furnace combustion chamber shell form a snap-fit ​​structure.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model is provided with a combustion chamber housing assembly, and the housing is shaped like a trumpet with a front opening larger than a rear opening. When air circulates inside the housing, it is convenient to gather the air when it circulates to the rear, thereby facilitating the flow rate of the air to the rear end, and preventing the air content and flow rate of the supplementary combustion chamber from being low after part of the air enters the main combustion chamber, thereby affecting the efficiency of gas combustion. The upper and lower combustion chamber housings are detachable, so that the air inlet holes on the combustion chamber liner inside the housing can be opened for cleaning, thereby preventing the air inlet holes from being blocked due to carbon deposition, thereby affecting gas combustion.

[0016] 2. The utility model is provided with a combustion chamber inner liner assembly, and the inner walls of the main combustion chamber of the natural gas furnace and the supplementary combustion chamber of the natural gas furnace are coated with nano-ceramic high-temperature resistant coating. Since the grain size of the nano-ceramic coating is extremely small, the number of microscopic interfaces inside the coating increases, and the interface distance decreases, so that the mean free path of phonons in the heat conduction process is reduced, and the thermal conductivity of the nano-ceramic high-temperature resistant coating material is also reduced, so that it is convenient to block the heat generated by the combustion of the gas inside the combustion liner, reduce the dissipation of heat, and thus facilitate to improve the utilization rate of the heat in the natural gas furnace combustion chamber, and the nano-coating has a strong anti-fouling ability, which is convenient to reduce carbon deposits adhering to the inner walls of the main combustion chamber and the supplementary combustion chamber of the natural gas furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the explosion structure of the utility model as a whole;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model as a whole from the side;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of a combustion chamber housing assembly of the utility model in a partially opened state;

[0021] Figure 4 It is a three-dimensional structural diagram of the combustion chamber inner chamber component of the utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the inlet component part of the gas furnace combustion chamber of the utility model.

[0023] In the figure: 1. combustion chamber shell assembly; 2. combustion chamber inner liner assembly; 3. gas furnace combustion chamber inlet assembly; 101. first gas furnace combustion chamber shell; 102. sealing card block; 103. sealing card slot; 104. second gas furnace combustion chamber shell; 105. first mounting block; 106. fixing screw; 107. fixing nut; 108. second mounting block; 201. gas furnace combustion chamber ignition zone; 202. natural gas fuel nozzle; 203. ignition device; 204. main combustion chamber air intake zone; 205. main combustion chamber air intake hole; 206. natural gas furnace main combustion chamber; 207. afterburning chamber air intake zone; 208. afterburning chamber air intake hole; 209. natural gas furnace afterburning chamber; 210. transition section; 301. combustion chamber air inlet; 302. first sealing gasket; 303. mounting flange; 304. second sealing gasket; 305. bolt hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figure 1 and Figure 2 As shown, a natural gas furnace combustion chamber comprises a combustion chamber shell assembly 1, a combustion chamber inner liner assembly 2 is installed inside the combustion chamber shell assembly 1, and a gas furnace combustion chamber inlet assembly 3 is installed at the end of the combustion chamber shell assembly 1.

[0027] See also Figure 3As shown, a natural gas furnace combustion chamber, the combustion chamber shell assembly 1 is used to be installed outside the entire combustion chamber, the bottom of the first gas furnace combustion chamber shell 101 is integrally connected with a sealing block 102, and the outside of the sealing block 102 is snap-connected with a sealing slot 103, and the bottom of the sealing slot 103 is fixedly connected with a second gas furnace combustion chamber shell 104, the side of the first gas furnace combustion chamber shell 101 is fixedly connected with a first mounting block 105, and the interior of the first mounting block 105 passes through a fixing screw 106, the bottom end of the fixing screw 106 is threadedly connected with a fixing nut 107, and the top of the fixing nut 107 is tightly fitted with a second mounting block 108, the shape of the first gas furnace combustion chamber shell 101 is set to be an upwardly arched semi-trumpet shape, and the inner diameter of the first gas furnace combustion chamber shell 101 is the same as the inner diameter of the second gas furnace combustion chamber shell 104. The shape of the second gas furnace combustion chamber shell 104 is set to be a downwardly arched semi-trumpet shape, the sealing block 102 and the sealing slot 103 form a clamping structure, and the outer wall of the sealing block 102 is tightly fitted with the inner wall of the sealing slot 103, and the material of the sealing block 102 is set to graphene material, and the shell with a trumpet-shaped front end opening is larger than the rear end opening. When air flows inside it, it is convenient to gather the air when it flows to the rear, so as to accelerate the flow rate of air to the rear end, and prevent part of the air from entering the main combustion chamber. The air content and flow rate in the supplementary combustion chamber are low, which affects the efficiency of gas combustion, and the upper and lower combustion chamber shells can be disassembled, so that the air inlet holes on the inner liner of the combustion chamber can be opened for cleaning, so as to prevent the air inlet holes from being blocked due to carbon deposition and affecting gas combustion.

[0028] See also Figure 4 As shown, a natural gas furnace combustion chamber, the combustion chamber inner chamber component 2 is used to provide a place for natural gas combustion, the main combustion chamber air inlet holes 205 are arranged at equal intervals about the sides of the main combustion chamber air inlet area 204, and the shape of the main combustion chamber air inlet area 204 is set to be trumpet-shaped, the materials of the natural gas furnace main combustion chamber 206 and the natural gas furnace supplementary combustion chamber 209 are set to be aluminosilicate ceramic materials, and the inner walls of the natural gas furnace main combustion chamber 206 and the natural gas furnace supplementary combustion chamber 209 are coated with nano-ceramic high-temperature resistant coatings, and the inner walls of the natural gas furnace main combustion chamber 206 and the natural gas furnace supplementary combustion chamber 209 are coated There is a nano-ceramic high-temperature resistant coating. Due to the extremely small grain size of the nano-ceramic coating, the number of microscopic interfaces inside the coating increases, and the interface distance decreases, which reduces the mean free path of phonons in the heat conduction process. The thermal conductivity of the nano-ceramic high-temperature resistant coating material also decreases accordingly, thereby facilitating the isolation of the heat generated by the combustion of gas inside the combustion liner, reducing the dissipation of heat, and facilitating the improvement of the heat utilization rate of the natural gas furnace combustion chamber. The nano-coating has a strong anti-fouling ability, which facilitates the reduction of carbon deposits adhering to the inner walls of the natural gas furnace main combustion chamber 206 and the natural gas furnace supplementary combustion chamber 209.

[0029] See also Figure 5 As shown, a natural gas furnace combustion chamber, a gas furnace combustion chamber inlet assembly 3 is used to connect the natural gas furnace combustion chamber with other equipment components, a first sealing gasket 302 is fixedly connected to the bottom of the combustion chamber air inlet 301, and a mounting flange 303 is welded to the end of the combustion chamber air inlet 301, a second sealing gasket 304 is fixedly connected to the side of the mounting flange 303, and bolt holes 305 are opened inside the second sealing gasket 304, the bolt holes 305 are arranged at equal intervals about the inside of the second sealing gasket 304, and the material of the second sealing gasket 304 is set to graphene material, the combustion chamber air inlet 301 and the first gas furnace combustion chamber shell 101 are integrated, and the combustion chamber air inlet 301 and the second gas furnace combustion chamber shell 104 form a snap-fit ​​structure.

[0030] Working principle: First, air enters the internal space formed by the first gas furnace combustion chamber shell 101 and the second gas furnace combustion chamber shell 104 from the combustion chamber air inlet 301, and at the same time, the natural gas fuel nozzle 202 is opened, and the natural gas is sprayed into the interior of the gas furnace combustion chamber ignition zone 201 through the natural gas fuel nozzle 202. At this time, the ignition device 203 is started, and the sparks from the ignition device 203 will ignite the natural gas. The ignited natural gas will then go to the position of the natural gas furnace main combustion chamber 206, and part of the air in the inner cavity of the first gas furnace combustion chamber shell 101 and the second gas furnace combustion chamber shell 104 will enter the main combustion chamber air intake area 20 through the main combustion chamber air intake hole 205. 4. Mixed with natural gas, the first combustion is carried out at the position of the natural gas furnace main combustion chamber 206. At the same time, the remaining air in the inner cavity of the first gas furnace combustion chamber shell 101 and the second gas furnace combustion chamber shell 104 will continue to move backwards. Since the space at the rear end of the inner cavity of the first gas furnace combustion chamber shell 101 and the second gas furnace combustion chamber shell 104 is reduced, the air will be squeezed and the flow rate will increase appropriately. Then the remaining part of the air will enter the afterburning chamber air inlet area 207 through the afterburning chamber air inlet hole 208, and come to the position of the natural gas furnace afterburning chamber 209, and mix and burn again with the remaining natural gas burned in the main combustion chamber 206 of the natural gas furnace;

[0031] When carbon deposits appear in the main combustion chamber air inlet 205 or the supplementary combustion chamber air inlet 208 after the natural gas furnace combustion chamber has been used for a period of time, tools can be used to unscrew the fixing nuts 107 and remove the fixing screws 106, so that the first gas furnace combustion chamber shell 101 and the second gas furnace combustion chamber shell 104 can be separated, thereby exposing the internal combustion chamber liner assembly 2. At this time, tools can be used to clean the carbon deposits inside the main combustion chamber air inlet 205 and the supplementary combustion chamber air inlet 208. After cleaning, they can be reassembled and continue to work.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A natural gas furnace combustion chamber, characterized in that: It comprises a combustion chamber shell assembly (1), a combustion chamber inner liner assembly (2) is installed inside the combustion chamber shell assembly (1), and a gas furnace combustion chamber inlet assembly (3) is installed at the end of the combustion chamber shell assembly (1); The combustion chamber shell assembly (1) comprises a first gas furnace combustion chamber shell (101), a sealing block (102), a sealing slot (103), a second gas furnace combustion chamber shell (104), a first mounting block (105), a fixing screw (106), a fixing nut (107), and a second mounting block (108); the bottom of the first gas furnace combustion chamber shell (101) is integrally connected with the sealing block (102), the outside of the sealing block (102) is snap-connected with the sealing slot (103), and the bottom of the sealing slot (103) is fixedly connected with the second gas furnace combustion chamber shell (104); the side of the first gas furnace combustion chamber shell (101) is fixedly connected with the first mounting block (105), and the interior of the first mounting block (105) is penetrated by a fixing screw (106); the bottom end of the fixing screw (106) is threadedly connected with the fixing nut (107), and the top of the fixing nut (107) is tightly fitted with the second mounting block (108).

2. A natural gas furnace combustion chamber according to claim 1, characterized in that: The shape of the first gas furnace combustion chamber shell (101) is set to be an upwardly arched semi-trumpet shape, and the inner diameter of the first gas furnace combustion chamber shell (101) is consistent with the inner diameter of the second gas furnace combustion chamber shell (104), and the shape of the second gas furnace combustion chamber shell (104) is set to be a downwardly arched semi-trumpet shape.

3. A natural gas furnace combustion chamber according to claim 1, characterized in that: The sealing card block (102) and the sealing card slot (103) form a snap-fit ​​structure, and the outer wall of the sealing card block (102) is tightly fitted with the inner wall of the sealing card slot (103), and the material of the sealing card block (102) is set to be graphene material.

4. A natural gas furnace combustion chamber according to claim 1, characterized in that: The combustion chamber inner liner assembly (2) comprises a gas furnace combustion chamber ignition zone (201), a natural gas fuel nozzle (202), an ignition device (203), a main combustion chamber air intake zone (204), a main combustion chamber air intake hole (205), a natural gas furnace main combustion chamber (206), a supplementary combustion chamber air intake zone (207), a supplementary combustion chamber air intake hole (208), a natural gas furnace supplementary combustion chamber (209), and a transition section (210). The natural gas fuel nozzle (202) is installed on the side of the gas furnace combustion chamber ignition zone (201), and the ignition device (203) is installed on the top of the gas furnace combustion chamber ignition zone (201). The gas furnace combustion chamber ignition zone (201 ) is connected to the main combustion chamber air inlet area (204), and the outer wall of the main combustion chamber air inlet area (204) is provided with a main combustion chamber air inlet hole (205), and the other end of the main combustion chamber air inlet area (204) is connected to the natural gas furnace main combustion chamber (206), the other end of the natural gas furnace main combustion chamber (206) is connected to the supplementary combustion chamber air inlet area (207), and the outer wall of the supplementary combustion chamber air inlet area (207) is provided with a supplementary combustion chamber air inlet hole (208), the side of the supplementary combustion chamber air inlet area (207) is fixedly connected to the natural gas furnace supplementary combustion chamber (209), and the other side of the natural gas furnace supplementary combustion chamber (209) is fixedly connected to a transition section (210).

5. A natural gas furnace combustion chamber according to claim 4, characterized in that: The main combustion chamber air inlet holes (205) are arranged at equal intervals on the sides of the main combustion chamber air inlet area (204), and the shape of the main combustion chamber air inlet area (204) is set to be trumpet-shaped. The materials of the natural gas furnace main combustion chamber (206) and the natural gas furnace supplementary combustion chamber (209) are both set to be aluminosilicate ceramic materials, and the inner walls of the natural gas furnace main combustion chamber (206) and the natural gas furnace supplementary combustion chamber (209) are coated with nano-ceramic high-temperature resistant coatings.

6. A natural gas furnace combustion chamber according to claim 1, characterized in that: The gas furnace combustion chamber inlet assembly (3) comprises a combustion chamber air inlet (301), a first sealing gasket (302), a mounting flange (303), a second sealing gasket (304), and a bolt hole (305); the first sealing gasket (302) is fixedly connected to the bottom of the combustion chamber air inlet (301), and the mounting flange (303) is welded to the end of the combustion chamber air inlet (301); the second sealing gasket (304) is fixedly connected to the side of the mounting flange (303), and the bolt hole (305) is opened inside the second sealing gasket (304).

7. A natural gas furnace combustion chamber according to claim 6, characterized in that: The bolt holes (305) are arranged at equal intervals inside the second sealing gasket (304), and the material of the second sealing gasket (304) is set to graphene material. The combustion chamber air inlet (301) and the first gas furnace combustion chamber shell (101) are integrated, and the combustion chamber air inlet (301) and the second gas furnace combustion chamber shell (104) form a snap-fit ​​structure.

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