A high-efficiency waste heat recovery device for natural gas combustion

Abstract

The utility model belongs to the field of energy recycling, concretely is a kind of high -efficient waste heat recovery equipment based on natural gas combustion, including natural gas combustion cooking range, natural gas combustion cooking range is equipped with smoke exhauster, smoke exhauster is equipped with oil-gas separation mechanism, oil-gas separation mechanism includes heat insulation separation tank, heat insulation separation tank is placed in the top of smoke exhauster, heat insulation separation tank is equipped with threaded water injection pipe, threaded water injection pipe is equipped with screw cap, heat insulation separation tank is equipped with gas delivery pipe, gas delivery pipe is equipped with third flange, heat insulation separation tank is equipped with delivery pipe, delivery pipe is equipped with fourth flange, above-mentioned a kind of high -efficient waste heat recovery equipment based on natural gas combustion is solved by the cooperation of threaded water injection pipe and delivery pipe the problem that although a lot of grease is filtered to the existing smoke exhauster, but still a small part of grease is discharged to the outdoor with flue gas, and the flue gas discharged is recovered, will make grease adsorbed on the inner wall of waste heat recovery equipment, affect heat conduction.

Description

Technical Field

[0001] This utility model relates to the field of energy recycling, specifically a high-efficiency waste heat recovery device based on natural gas combustion. Background Technology

[0002] Waste heat refers to the sensible and latent heat that has not been rationally utilized in the original design of energy-consuming equipment in industrial enterprises that has been put into operation due to limitations such as historical, technological, and conceptual factors. It includes waste heat from high-temperature exhaust gases, waste heat from cooling media, waste steam and wastewater, waste heat from high-temperature products and slag, waste heat from chemical reactions, and waste heat from combustible exhaust gases, waste liquids, and waste materials.

[0003] Natural gas is a combustible gas that releases a large amount of heat energy during combustion. There is a significant amount of waste heat in the natural gas burners used in restaurants that can be utilized. However, existing waste heat recovery operations using natural gas combustion still have the following problems: In existing natural gas burners, the exhaust fan uses the principle of hot air rising and negative pressure to draw in cooking fumes. Although the exhaust fan filters out a large amount of grease, a small portion is still discharged outdoors with the flue gas. When attempting to recover waste heat from the discharged flue gas, the grease adheres to the inner wall of the waste heat recovery device, affecting heat conduction and resulting in poor waste heat recovery efficiency. Therefore, this paper proposes a high-efficiency waste heat recovery device for natural gas combustion to address the shortcomings of existing systems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, although existing smoke extraction machines filter out a large amount of grease, a small portion of grease is still discharged outdoors with the flue gas. When performing waste heat recovery on the discharged flue gas, the grease will adhere to the inner wall of the waste heat recovery equipment, affecting heat conduction and resulting in poor waste heat recovery effect. This utility model proposes a high-efficiency waste heat recovery device based on natural gas combustion.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-efficiency waste heat recovery device based on natural gas combustion, comprising: A natural gas combustion stove, wherein a range hood is fixedly installed on the natural gas combustion stove; An oil-gas separation mechanism includes an insulated separation tank placed on top of a range hood. A threaded water injection pipe is fixedly mounted on the insulated separation tank, and a threaded cap is threaded onto the threaded water injection pipe. An air supply pipe is fixedly mounted on the insulated separation tank, and a third flange is fixedly mounted at one end of the air supply pipe. A delivery pipe is fixedly mounted on the insulated separation tank, with one end of the delivery pipe penetrating into the interior of the insulated separation tank and close to the bottom surface of the interior of the insulated separation tank. A fourth flange is fixedly mounted at the other end of the delivery pipe.

[0006] Preferably, the natural gas combustion stove is equipped with a heat exchange cylinder inside, a cleaning tank is fixedly installed on the natural gas combustion stove, a drain pipe is fixedly installed at the bottom of the cleaning tank, the drain pipe passes through the natural gas combustion stove, and a water inlet pipe is fixedly installed on the heat exchange cylinder.

[0007] Preferably, a water outlet pipe is fixedly mounted on the heat exchange cylinder, one end of which passes through the natural gas combustion stove, and a support block is fixedly mounted between the water outlet pipe and the natural gas combustion stove. A water outlet nozzle is fixedly mounted on one end of the water outlet pipe, and the water outlet nozzle is located above the cleaning tank. A water outlet valve is mounted on the water outlet nozzle.

[0008] Preferably, an exhaust pipe is fixedly mounted on the heat exchange cylinder, the exhaust pipe is connected to the interior of the heat exchange cylinder, an air inlet pipe is fixedly mounted on the heat exchange cylinder, and an exhaust pipe is fixedly mounted on the heat exchange cylinder.

[0009] Preferably, one end of both the inlet pipe and the outlet pipe extends into the interior of the heat exchange cylinder, and a metal circulation pipe is fixedly installed between one end of the inlet pipe and one end of the outlet pipe. The metal circulation pipe is located inside the heat exchange cylinder, and a second flange is fixedly installed at one end of the inlet pipe. The second flange is assembled with a third flange.

[0010] Preferably, a natural gas connection pipe is fixedly installed on the natural gas combustion stove, and a stove support bracket is fixedly installed on the natural gas combustion stove, with the stove support bracket located below the range hood.

[0011] Preferably, the smoke extractor is fixedly equipped with a smoke exhaust pipe, and a first flange is fixedly equipped at one end of the smoke exhaust pipe. The first flange is assembled with a fourth flange.

[0012] Preferably, the first flange, the fourth flange, the second flange, and the third flange are equipped with a plurality of fastening bolts, and each fastening bolt is threaded with a nut.

[0013] The advantages of this utility model are: This invention allows water to be injected into the heat-insulating separator tank through a threaded water injection pipe after the threaded cap is unscrewed, so that one end of the delivery pipe is submerged in water. This small portion of high-temperature flue gas mixed with grease enters the heat-insulating separator tank through the delivery pipe. When this small portion of high-temperature flue gas mixed with grease comes into contact with water, the grease mixes with the water, and the hot gas is discharged through the gas delivery pipe, thereby improving the efficiency of clean energy use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the assembly structure of the natural gas combustion stove and the oil-gas separation mechanism of this utility model. Figure 2 This is a schematic diagram of the assembly structure of the natural gas combustion stove and high-efficiency waste heat recovery equipment of this utility model. Figure 3 This is a cross-sectional structural diagram of the natural gas combustion stove and oil-gas separation mechanism of this utility model. Figure 4 This is a cross-sectional structural diagram of the high-efficiency waste heat recovery equipment of this utility model; Figure 5 This is a cross-sectional structural diagram of the oil-gas separation mechanism of this utility model.

[0016] In the picture: 10. Natural gas stove; 11. Natural gas connection pipe; 12. Stove support bracket; 13. Washing sink; 20. Support block; 21. Water outlet pipe; 22. Water outlet nozzle; 23. Water outlet valve; 30. Smoke extractor; 31. Exhaust pipe; 32. First flange; 33. Heat exchanger; 40. Water inlet pipe; 41. Air inlet pipe; 42. Second flange; 43. Discharge pipe; 50. Exhaust pipe; 51. Drain pipe; 52. Metal circulation pipe; 53. Oil-gas separation mechanism; 5300. Insulated separation tank; 5301. Threaded water injection pipe; 5302. Threaded cover; 5303. Gas supply pipe; 5304. Third flange; 5305. Delivery pipe; 5306. Fourth flange; 5307. Fastening bolt; 5308. Nut. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0018] The following is in conjunction with the appendix Figure 1-5This application will be described in further detail. This application discloses a high-efficiency waste heat recovery device based on natural gas combustion. (Refer to...) Figure 1 and Figure 5 A high-efficiency waste heat recovery device based on natural gas combustion includes a natural gas combustion stove 10, a range hood 30 fixedly mounted on the natural gas combustion stove 10, an oil-gas separation mechanism 53 mounted on the top of the range hood 30, the oil-gas separation mechanism 53 including an insulated separation tank 5300, the insulated separation tank 5300 being placed on the top of the range hood 30, a threaded water injection pipe 5301 fixedly mounted on the insulated separation tank 5300, a threaded cap 5302 threadedly mounted on the threaded water injection pipe 5301, a gas supply pipe 5303 fixedly mounted on the insulated separation tank 5300, a third flange 5304 fixedly mounted at one end of the gas supply pipe 5303, a delivery pipe 5305 fixedly mounted on the insulated separation tank 5300, one end of the delivery pipe 5305 penetrating into the interior of the insulated separation tank 5300 and close to the inner bottom surface of the insulated separation tank 5300, and a fourth flange 5306 fixedly mounted at the other end of the delivery pipe 5305.

[0019] In this invention, the threaded cap 5302 is unscrewed, and water is injected into the heat insulation separation tank 5300 through the threaded water injection pipe 5301, so that one end of the delivery pipe 5305 is in the water. This small portion of high-temperature flue gas mixed with grease enters the heat insulation separation tank 5300 through the delivery pipe 5305. This small portion of high-temperature flue gas mixed with grease comes into contact with the water, causing the grease to mix with the water. The hot gas with high temperature is discharged through the gas delivery pipe 5303, thereby improving the efficiency of clean energy use.

[0020] Reference Figure 1 and Figure 3 as well as Figure 4A heat exchange cylinder 33 is fixedly installed inside the natural gas stove 10. A cleaning tank 13 is fixedly installed on the natural gas stove 10. A drain pipe 51 is fixedly installed at the bottom of the cleaning tank 13, and the drain pipe 51 passes through the natural gas stove 10. A water inlet pipe 40 is fixedly installed on the heat exchange cylinder 33, and a water outlet pipe 21 is fixedly installed on the heat exchange cylinder 33. One end of the water outlet pipe 21 passes through the natural gas stove 10, and a support block 20 is fixedly installed between the water outlet pipe 21 and the natural gas stove 10. A water nozzle 22 is fixedly installed at one end of the water outlet pipe 21. The water nozzle 22 is located above the cleaning tank 13, and water is discharged from it. The nozzle 22 is equipped with a water outlet valve 23. The heat exchange cylinder 33 is fixedly equipped with an exhaust pipe 50, which is connected to the interior of the heat exchange cylinder 33. The heat exchange cylinder 33 is fixedly equipped with an air inlet pipe 41 and an exhaust pipe 43. One end of the air inlet pipe 41 and the exhaust pipe 43 both penetrate into the interior of the heat exchange cylinder 33. A metal circulation pipe 52 is fixedly installed between one end of the air inlet pipe 41 and one end of the exhaust pipe 43. The metal circulation pipe 52 is located inside the heat exchange cylinder 33. A second flange 42 is fixedly installed at one end of the air inlet pipe 41. The second flange 42 is assembled with a third flange 5304.

[0021] In this invention, high-temperature flue gas enters the metal circulation pipe 52 of the heat exchange cylinder 33 through the inlet pipe 41, increasing the flow length of the high-temperature flue gas. This allows the high-temperature flue gas in the metal circulation pipe 52 to heat the water flowing in the inlet pipe 40 through heat conduction. The heated water flows through the outlet pipe 21. When the outlet valve 23 is opened, hot water flows out from the outlet nozzle 22, making it convenient to use hot water in the cleaning tank 13 and making efficient use of waste heat. The hot air generated by the hot water in the heat exchange cylinder 33 can be discharged through the exhaust pipe 50.

[0022] Reference Figure 1 and Figure 2 as well as Figure 5 A natural gas connection pipe 11 is fixedly installed on the natural gas combustion stove 10. A stove support bracket 12 is fixedly installed on the natural gas combustion stove 10. The stove support bracket 12 is located below the range hood 30. An exhaust pipe 31 is fixedly installed on the range hood 30. A first flange 32 is fixedly installed at one end of the exhaust pipe 31. The first flange 32 is assembled with a fourth flange 5306. Multiple fastening bolts 5307 are installed on the first flange 32, the fourth flange 5306, the second flange 42, and the third flange 5304. Nuts 5308 are threaded onto each of the fastening bolts 5307.

[0023] In this invention, the gas flows through the natural gas connection pipe 11 and is burned on the stove support bracket 12. When the range hood 30 is turned on, the grease-laden fumes are drawn in by the range hood 30. The range hood 30 can process most of the grease, and a small portion of the grease is discharged through the exhaust pipe 31.

[0024] Working principle: Multiple fastening bolts 5307 are installed on the first flange 32, the fourth flange 5306, the second flange 42, and the third flange 5304, and nuts 5308 are installed on the fastening bolts 5307. The threaded cap 5302 is unscrewed, and water is injected into the heat-insulating separator tank 5300 through the threaded water injection pipe 5301, so that one end of the delivery pipe 5305 is submerged in water. Gas flows through the natural gas connection pipe 11 and burns on the stove support bracket 12. The range hood 30 is turned on, allowing the grease-laden fumes to be drawn in. The range hood 30 can process most of the grease, while a small portion is discharged through the exhaust pipe 31. This small portion of grease-laden fumes is discharged at high temperatures. Flue gas enters the interior of the heat-insulating separator 5300 through the delivery pipe 5305, where it comes into contact with water, causing the grease to mix with the water. The hot gas is discharged through the air supply pipe 5303. The hot flue gas enters the metal circulation pipe 52 of the heat exchange cylinder 33 through the air inlet pipe 41, increasing the flow length of the hot flue gas. This allows the hot flue gas in the metal circulation pipe 52 to heat the water flowing in the water inlet pipe 40 through heat conduction. The heated water flows through the water outlet pipe 21. When the water outlet valve 23 is opened, hot water flows out from the water outlet nozzle 22, making it convenient to use hot water in the cleaning tank 13 and making efficient use of waste heat. The hot gas generated by the hot water in the heat exchange cylinder 33 can be discharged through the exhaust pipe 50, improving the usage effect.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-efficiency waste heat recovery device based on natural gas combustion, characterized in that: include: A natural gas combustion stove (10) is provided with a smoke extractor (30) fixedly mounted on it. The oil-gas separation mechanism (53) includes an insulated separation tank (5300), which is placed on top of the smoke extractor (30). A threaded water injection pipe (5301) is fixedly installed on the insulated separation tank (5300), and a threaded cap (5302) is threadedly installed on the threaded water injection pipe (5301). An air supply pipe (5303) is fixedly installed on the insulated separation tank (5300), and a third flange (5304) is fixedly installed at one end of the air supply pipe (5303). A delivery pipe (5305) is fixedly installed on the insulated separation tank (5300), and one end of the delivery pipe (5305) extends into the interior of the insulated separation tank (5300). One end of the delivery pipe (5305) is close to the bottom surface of the interior of the insulated separation tank (5300), and a fourth flange (5306) is fixedly installed at the other end of the delivery pipe (5305).

2. The high-efficiency waste heat recovery device based on natural gas combustion according to claim 1, characterized in that: The natural gas combustion stove (10) is equipped with a heat exchange cylinder (33) inside, a cleaning tank (13) is fixedly installed on the natural gas combustion stove (10), a drain pipe (51) is fixedly installed at the bottom of the cleaning tank (13), the drain pipe (51) passes through the natural gas combustion stove (10), and a water inlet pipe (40) is fixedly installed on the heat exchange cylinder (33).

3. The high-efficiency waste heat recovery device based on natural gas combustion according to claim 2, characterized in that: A water outlet pipe (21) is fixedly installed on the heat exchange cylinder (33). One end of the water outlet pipe (21) passes through the natural gas combustion stove (10), and a support block (20) is fixedly installed between the water outlet pipe (21) and the natural gas combustion stove (10). A water outlet nozzle (22) is fixedly installed on one end of the water outlet pipe (21). The water outlet nozzle (22) is located above the cleaning tank (13), and a water outlet valve (23) is installed on the water outlet nozzle (22).

4. The high-efficiency waste heat recovery device based on natural gas combustion according to claim 3, characterized in that: An exhaust pipe (50) is fixedly mounted on the heat exchange cylinder (33), and the exhaust pipe (50) is connected to the interior of the heat exchange cylinder (33). An air inlet pipe (41) is fixedly mounted on the heat exchange cylinder (33), and an exhaust pipe (43) is fixedly mounted on the heat exchange cylinder (33).

5. The high-efficiency waste heat recovery device based on natural gas combustion according to claim 4, characterized in that: One end of the air inlet pipe (41) and the exhaust pipe (43) both penetrate into the interior of the heat exchange cylinder (33), and a metal circulation pipe (52) is fixedly assembled between one end of the air inlet pipe (41) and one end of the exhaust pipe (43). The metal circulation pipe (52) is located inside the heat exchange cylinder (33). A second flange (42) is fixedly assembled at one end of the air inlet pipe (41), and the second flange (42) is assembled with a third flange (5304).

6. The high-efficiency waste heat recovery device based on natural gas combustion according to claim 5, characterized in that: The natural gas combustion stove (10) is fixedly equipped with a natural gas connection pipe (11) and a stove support bracket (12), which is located below the range hood (30).

7. A high-efficiency waste heat recovery device based on natural gas combustion according to claim 6, characterized in that: The smoke extractor (30) is fixedly equipped with a smoke exhaust pipe (31), and a first flange (32) is fixedly equipped at one end of the smoke exhaust pipe (31). The first flange (32) is assembled with a fourth flange (5306).

8. A high-efficiency waste heat recovery device for natural gas combustion according to claim 7, characterized in that: The first flange (32) and the fourth flange (5306), as well as the second flange (42) and the third flange (5304), are equipped with multiple fastening bolts (5307), and each fastening bolt (5307) is threaded with a nut (5308).

Images