CN203693289U - Multihole steam furnace energy-saving device - Google Patents

Abstract

The utility model relates to an energy-saving device for a multi-hole steam oven, which is a heat exchange system composed of heat exchange tubes and heat exchange passages, which is connected to a traditional steam oven in series. The heat exchange channel is connected to the fire tube, and the other end of the fire tube is connected to the furnace core box to form a channel for high-temperature exhaust gas; the air goes through the tube side and is arranged symmetrically along the center of the heat exchange channel in the heat exchange tube to complete heat exchange. The fire tube is submerged in the cavity of the steam oven, and water is added to the cavity of the steam oven through the water inlet pipe, which is burned by the furnace core and heated and evaporated by the fire tube to provide high-temperature water vapor for cooking in the steamer. The utility model adopts low-temperature air and high-temperature tail gas heat exchange technology, which can make full use of fuel energy. At the same time, the structure of the steam oven cavity is designed to reduce the heat dissipation area, strengthen the seal and add insulation devices around the periphery to reduce heat loss, which not only reduces the cost but also meets the requirements of the national energy saving and emission reduction policy.

Description

Energy-saving device for porous steam oven

technical field

The utility model relates to a gas energy-saving device, in particular to a multi-hole steam furnace energy-saving device; specifically, it recovers and integrates the high-temperature tail gas released by the traditional steam furnace, and effectively improves the heat energy utilization of the gas by preheating and cooling the air. Rate.

Background technique

The common commercial porous steamers on the market are mostly burned through the stove core, directly or indirectly through the released flue gas to heat the cold water to form steam, and the final exhausted flue gas is still high temperature, taking away a lot of heat, which seriously reduces the utilization rate of fuel . Therefore, on the basis of the structure of the traditional furnace, the heat preservation and air preheating technology can be used to make secondary use of the heat of the combustion tail gas. At the same time, the air is combusted after being preheated by high-temperature exhaust gas, which is conducive to realizing low-oxygen ultra-high-temperature combustion, making combustion more complete, and reducing CO emissions.

200610119418.X designed an energy-saving stove with waste heat recovery function. The energy-saving stove is equipped with a water container inside the stove body, so that the waste heat of the stove can be used for water circulation heating to provide hot water for different purposes. 200610119420.7 Invented a water circulation energy-saving stove system, which connects the water container in the energy-saving stove body with the external water storage tank, which can make the gas burn efficiently and use the waste heat to generate hot water. 201310215484.7 mentioned a heat-integrated gas furnace system and operation method, and described in detail the process of air preheating by high-temperature exhaust gas. 201310102190.3 According to this idea, an energy-saving furnace was designed, which adopts the nested straight tube heat exchange method, so that the combustion tail gas can complete the heat exchange through the outer tube and the cold air in the inner tube, and at the same time, add Insulation medium, to achieve a certain energy-saving effect. These patented technologies all adopt the idea of waste heat recovery and utilization, but the implementation process is different. In the utility model, the countercurrent heat exchange technology is adopted to recycle and reuse the waste heat released by the porous steamer, which further improves the energy saving efficiency. The specific plan is stated as follows.

Contents of the invention

The utility model proposes a gas-fired energy-saving furnace device for a multi-hole steamer, in which a traditional steamer is connected to a heat exchange system consisting of heat exchange tubes 7 and heat exchange channels 9 . Among them, the heat exchange channel 9 is connected to the fire tube 3, and the other end of the fire tube 3 is connected to the furnace core box 6 to form a channel for high-temperature exhaust gas; Cloth to complete the heat exchange. Design the structure of the steam oven chamber 1 to reduce the heat dissipation area and add an insulation layer 2 to the periphery to continue to reduce heat dissipation and further improve fuel utilization. The fire tube 3 is submerged in the steamer chamber 1, and water is added to the steamer chamber 1 through the water inlet pipe 10, and is burned by the core box 6 and heated and evaporated by the fire tube 3, so as to provide high-temperature water vapor for cooking in the steamer.

The utility model is achieved in that:

The multi-hole steamer gas energy-saving furnace device of the present invention includes a steamer cavity 1, a heat preservation device 2, a fire pipe 3, a drain pipe 4, a fan 5, a furnace core box 6, a heat exchange pipe 7, an exhaust pipe 8, a heat exchange Channel 9 and water inlet pipe 10; it is characterized in that one end of the fire tube 3 is welded on the top side of the furnace core box 6, and the other end is welded to the opening at the top of the heat exchange channel 9, so as to communicate with the inside of the furnace core box 6 and the inside of the heat exchange channel 9, At the same time, the fire pipe 3 is immersed in the bottom of the steam furnace cavity 1; the fan 5 is fixed on the legs of the steam furnace, the air outlet is connected to one side of the heat exchange tube 7, and the other side of the heat exchange tube 7 is welded to the side of the furnace core box 6 connected; the heat exchange tube 7 is arranged in the heat passage 9; the water inlet pipe 10 is welded on one side of the steam oven chamber 1, and the drain pipe 4 is welded on the bottom side; The side opening is welded to communicate with the exhaust pipe 8; the circumference and top of the steam chamber 1 are provided with an insulating layer 2.

The steam oven cavity 1 is composed of a lower cuboid cavity and an upper circular hole cavity, the sum of the diameters of the circular holes is less than the side length of the rectangular parallelepiped, and the circular holes are evenly distributed.

The thermal insulation layer 2 is close to the upper side of the oven cavity 1 and around the circular hole body.

The heat exchange tube 7 is selected as a single tube or multiple tubes connected in parallel.

The heat exchange channel 9 is a rectangular parallelepiped or a round tube, which is fixed at the bottom of the steam oven chamber 1, and the length and form of the structural rotation are not limited.

A groove is slotted at the top of each circular hole, and a rough gasket is stacked for sealing.

The utility model has the advantages of:

1. The heat of high-temperature exhaust gas can be utilized to improve fuel utilization;

2. Use waste heat to insulate the gas furnace, saving fuel;

3. Reduce the heat dissipation area, strengthen the seal, and reduce the heat loss;

4. It can greatly reduce the use of fuel, which not only reduces the cost but also meets the requirements of the national energy conservation and emission reduction policy.

Description of drawings

Figure 1: Schematic diagram of the structure of the multi-hole steamer gas-fired energy-saving furnace device.

Figure 2: A schematic diagram of a top view of a gas-fired energy-saving furnace with a porous steamer.

Figure 3: A schematic three-dimensional structure diagram of a porous steamer gas-fired energy-saving furnace device.

Fig. 4: A schematic diagram of the structure of the steamer chamber 1.

Fig. 5: a schematic diagram of the structure of the furnace core box 6.

Figure 6: Schematic diagram of the gasket structure.

Fig. 7: Schematic diagram of the structure of the heat exchange channel 9.

Among them: 1—steam chamber, 2—insulation layer, 3—fire pipe, 4—drainage pipe, 5—fan, 6—core box, 7—heat exchange pipe, 8—exhaust pipe, 9—heat exchange channel , 10—water inlet pipe, slash section—insulation material, 6a—casing body, 6b—furnace core, 6c—gas inlet, 6d—ignition switch, black section—sealing gasket.

Detailed ways

The utility model patent is further described in conjunction with the accompanying drawings:

As shown in Figures 1 to 7:

A gas-fired energy-saving furnace device for a porous steam furnace, which includes a steam furnace chamber 1, an insulation layer 2, a fire pipe 3, a drain pipe 4, a fan 5, a furnace core box 6, a heat exchange pipe 7, an exhaust pipe 8, and a heat exchange channel 9 and the water inlet pipe 10; one end of the fire pipe 3 is welded on the top side of the furnace core box 6, and the other end is welded to the opening at the top of the heat exchange channel 9 to communicate with the inside of the furnace core box 6 and the inside of the heat exchange channel 9. At the same time, the fire tube 3 Immersed in the bottom of the steam oven cavity 1; the fan 5 is fixed on the leg of the steam oven to connect to the power supply, the air outlet of the fan 5 is connected in series with one side of the heat exchange tube 7, and the other side of the heat exchange tube 7 is welded to the side of the furnace core box 6 Communication; the heat exchange tube 7 nests and extends along the center of the heat exchange channel 9 to complete the preheating process of the air. A water inlet pipe 10 is welded on one side of the steam oven cavity 1, and a drain pipe 4 is welded on the bottom side. The furnace core box 6 is fixed on the lower part of the steam oven cavity 1, and a hole is opened on one side of the heat exchange channel 9 to communicate with the exhaust pipe 8 by welding. The circumference and the top of the steamer cavity 1 are installed with insulation, which covers the cylinder and the top surface of the insulation layer to prevent the steamer from sliding on the top and the bottom of the steamer from being not sealed enough to run steam from the side, reducing additional heat dissipation.

The steam oven cavity 1 is composed of a lower cuboid cavity and an upper circular hole cavity. The two cavity parts are directly connected as a whole. The water inside the cavity is heated and evaporated to generate water vapor. heating. Wherein, the sum of the diameters of the circular holes is smaller than the side length of the cuboid, and the circular holes are evenly distributed.

The insulation layer 2 is close to the upper side of the steam oven chamber 1 and around the round hole body, and the top of the insulation layer 2 around the round hole body of the steam oven chamber 1 is slotted, and rough gaskets are stacked for sealing.

The diameter of the fire tube 3 is smaller than the side length of the heat exchange channel 9 and is immersed in the inside of the cuboid of the steam chamber 1 . The structure of the fire tube 3 is a circular tube, a corrugated tube with fins, or the like.

The fan 5 is a small air blower, an axial flow fan or the like.

Furnace core box 6 is made of furnace core, ignition switch, gas inlet hole and casing, is fixed on the lower bottom surface of steam oven cavity 1 as combustion chamber.

The heat exchange tube 7 can be selected as a single tube or multiple tubes connected in parallel.

The heat exchange channel 9 is a rectangular parallelepiped or a round tube, which is fixed on the bottom of the steam chamber 1, and the length and form of the structural rotation are not limited.

Water passes into the inside of the steam oven chamber 1 through the water inlet pipe 10, and is heated by the core box 6 and the fire tube 3 to generate water vapor. After cooking, the waste water is discharged through the drain pipe 4. The gas is connected to the core box 6 to enter, and the air is sucked by the blower fan 5, enters the core box 6 along the heat exchange tube 7, and is mixed in the core box 6 to complete combustion. The high-temperature exhaust gas released by combustion enters the fire tube 3 through the upper opening of the furnace core box 6, and then is discharged into the heat exchange channel 9. After a second heat exchange with the heat exchange tube 7, it enters the exhaust pipe 8 and is discharged into the atmosphere.

The utility model will be better described below in conjunction with the example of specific size, but its application will not be limited thereby.

Example 1:

The new gas-fired energy-saving steam furnace body has a length of 500mm, a width of 450mm, and a height of 700mm. The inner diameter of the steam chamber 1 is 55mm and has three holes. 20mm thick ceramic fiber bricks are used for heat preservation, the fire pipe 3 is a 1mm thick stainless round pipe, and the fan 5 is a blower. The heat exchange tube 7 is a copper tube with a thickness of 0.7 mm and a diameter of 45 mm, which is bent along the heat exchange channel 9 and placed along its center. The heat exchange channel 9 is a cuboid with a length of 90 mm and a width of 70 mm, arranged along the size of the furnace body.

This device is used in a common three-hole steamer in the catering industry, and the fuel is canned liquefied gas that is common in the market. Market research shows that the working time of a combustion furnace in a good business booth is 14 hours/day, and the gas consumption of the traditional gas stove device is 12kg/day; after using the above-mentioned new device, the gas consumption is less than 10kg/day, and the energy saving efficiency is high. at 20%.

Example 2:

The new gas-fired energy-saving steam furnace has a body length of 720mm, width of 650mm, and height of 700mm. The inner diameter of steam chamber 1 is 55mm and four holes. 20mm thick ceramic fiber bricks are used for heat preservation, the fire pipe 3 is a 1mm thick stainless steel finned tube, and the fan 5 is an axial flow fan. The heat exchange tubes 7 are two copper tubes with a thickness of 0.7 mm and a diameter of 25 mm, which are bent along the heat exchange channel 9 and arranged symmetrically along the center thereof. The heat exchange channel 9 is a cuboid spiral channel with a length of 90 mm and a width of 70 mm.

This device is used in a common four-hole steamer oven in the catering industry, and the fuel is domestic natural gas. Market research shows that when the business is good in a day, the working time of the combustion furnace is 14 hours/day, and the gas consumption of the traditional gas stove device is 270m ³ /month; after using the above-mentioned new device, the gas consumption is less than 160m ³ /month, saving energy The efficiency is higher than 40%.

Example 3:

The new gas-fired energy-saving steam furnace has a body length of 1000mm, a width of 650mm, and a height of 700mm. The inner diameter of the steam chamber 1 is 55mm and has six holes. 30mm thick ceramic fiber bricks are used for heat preservation, the fire tube 3 is a 1mm thick stainless steel finned tube, and the fan 5 is an axial flow fan. The heat exchange tubes 7 are four copper tubes with a thickness of 0.7 mm and a diameter of 25 mm, which are bent along the heat exchange channel 9 and arranged symmetrically along the center thereof. The heat exchange channel 9 is a round stainless steel tube with a thickness of 1 mm and a diameter of 90 mm, arranged along the size of the furnace body.

This device is used in a relatively large six-hole steam oven in the hotel, and the fuel is domestic natural gas. According to the market research, the working time of the stove used by the hotel is 18 hours per day, and the average gas consumption of a traditional gas stove device is 320m ³ /month. After using the above new device, the gas consumption is less than 160m ³ /month, and the energy saving efficiency About 50%.

The purpose of the above embodiments is to better illustrate the utility model. According to different applications, sizes, materials, etc., the parameters, materials, sizes, processing details, installation methods, etc. of the device can be changed accordingly. Substitutions or transformations made on the basis are within the protection of the utility model.

Claims (6)

1. A gas-fired energy-saving furnace device for a porous steamer, which includes a steamer cavity (1), an insulation layer (2), a fire pipe (3), a drain pipe (4), a fan (5), and a core box (6) , heat exchange pipe (7), exhaust pipe (8), heat exchange channel (9) and water inlet pipe (10); it is characterized in that one end of the fire pipe (3) is welded on the top side of the furnace core box (6), and the other One end is welded to the opening at the top of the heat exchange channel (9), connecting the inside of the furnace core box (6) and the inside of the heat exchange channel (9). At the same time, the fire tube (3) is immersed in the bottom of the steam oven cavity (1); the fan ( 5) Fixed on the leg of the steamer, the air outlet is connected to one side of the heat exchange tube (7), and the other side of the heat exchange tube (7) is welded to the side of the furnace core box (6) to communicate; the heat exchange tube (7) ) is installed in the heat channel (9); the water inlet pipe (10) is welded on one side of the steam oven cavity (1), and the drain pipe (4) is welded on the bottom side; the core box (6) is fixed on the lower part of the steam oven cavity (1), A hole is opened on one side of the heat exchange channel (9) to communicate with the exhaust pipe (8) by welding; an insulation layer (2) is provided on the circumference and top of the steam chamber (1). 2. The device according to claim 1, characterized in that the steam oven cavity (1) is composed of a lower cuboid cavity and an upper circular hole cavity, the sum of the diameters of the circular holes is less than the side length of the rectangular parallelepiped, and the circular hole Evenly distributed. 3. The device according to claim 1, characterized in that the insulation layer (2) is close to the upper side of the steam oven chamber (1) and around the circular hole body. 4. The device according to claim 1, characterized in that the heat exchange tube (7) is selected as a single tube or multiple tubes connected in parallel. 5. The device according to claim 1, characterized in that the heat exchange channel (9) is a rectangular parallelepiped or a round tube, fixed at the bottom of the steam chamber (1), and the structure rotation length and form are not limited. 6. The device according to claim 3, characterized in that a groove is made at the top of each circular hole, and a rough gasket is stacked for sealing.