CN211399739U - Gas steam engine heat exchanger combining fin plate structure and flat tube structure - Google Patents

Abstract

The utility model relates to the field of commercial kitchen utensils, in particular to a gas steam engine heat exchanger combining a fin plate structure and a flat tube structure. The bottom plate of the hot water area is a finned plate, the bottom surface of the finned plate is provided with fins, and the finned plate is at a certain inclined angle. Short rectangular tubes on the left and right, a plurality of flat smoke tubes are arranged in the left and right directions at a certain distance, the space between adjacent smoke tubes and the space above and below the smoke tubes are all hot water bodies, which is conducive to the matching burner to organize the gas to be fully and fully The combustion reaction is conducive to the smooth discharge of the generated flue gas, the full absorption and utilization of the heat of the high-temperature flue gas and the heat of the low-temperature flue gas, and the smooth and centralized discharge of the scale.

Description

Gas steam engine heat exchanger combining fin plate structure and flat tube structure

technical field

The utility model relates to the field of commercial kitchen utensils, in particular to a gas steam engine heat exchanger which combines a fin plate structure and a flat tube structure.

Background technique

The core components of a commercial gas steam engine include a burner and a heat exchanger. The burner organizes the mixed combustion of gas and air to release heat, and the heat exchanger absorbs the heat released by the combustion of gas. There are three types of flue gas discharge methods: one is to use the wind pressure of the blast burner to promote flue gas discharge; the other is to use the negative pressure and strong suction of the air inlet of the blower at the exhaust port of the steam engine to promote flue gas discharge; the third is to set up a chimney, Relying on the rise of hot gas to form a pulling effect to promote flue gas emission. Steam engines that use blower burners and forced smoke exhaust by blowers usually have a high temperature in the internal working environment of the steam engine, which is not conducive to the long-term stable operation of the motor and electronic control components, not only the failure rate is high, but also the production, use and maintenance. The cost will also be high; the steam engine that sets up a chimney and relies on the rising of hot gas to form a drawing effect to promote flue gas emission, although the structure is relatively simple, the heat exchanger structure and heat exchange efficiency of current steam engine products are generally low, which is difficult to meet people's needs. The speed, amount of steam and energy efficiency of steam generated by the steam engine are required. Therefore, the utility model is a chimney, relying on the rising of hot gas to form a drawing effect to promote the discharge of flue gas, and heat exchange between the fin plate heat exchange structure and the flat tube. The structure is combined with high-efficiency steam engine heat exchanger.

Utility model content

The technical problem that the utility model mainly solves is the problem that the heat exchanger structure and heat exchange efficiency of the current steam engine products are generally low. It is a high-efficiency steam engine heat exchanger that combines the plate heat exchange structure and the flat tube heat exchange structure.

The utility model comprises a fin plate, a fin, a flat smoke pipe, a flue gas confluence pipe, a smoke exhaust port, a chimney, a hot water area of a box body, a steam outlet, a cold water area of the box body, a cold water inlet, a burner, and a front of the combustion chamber. Coaming plate, lower coaming plate of combustion chamber, side coaming plate of combustion chamber, secondary air deflector, flue gas transfer chamber. It is characterized in that the heat exchanger box body includes a hot water area of the box body and a cold water area of the box body, the bottom plate of the hot water area of the box body is a fin plate, the bottom surface of the fin plate is provided with fins, and the bottom surface of the fin plate is provided with fins Below one side of the fin is the combustion chamber, and above the fin plate is the hot water exchange body. The fin plate is inclined at a certain angle. The side with a high inclination angle connects upward to the front panel of the hot water area of the box. The bottom is connected to the front panel of the cold water area of the box body, the front panel of the hot water area is provided with a connection port of a flat smoke pipe, and the hot water exchange body of the hot water area is provided with a flat smoke pipe. The connection port of the flat smoke pipe set on the front panel of the water area is welded, and the flue gas outlet end of the flat smoke pipe is welded and connected to the flue gas confluence pipe. The flat smoke pipe is a rectangular pipe with long up and down and short left and right. They are arranged in a line at a certain distance. The space between adjacent smoke pipes and the upper and lower spaces of the smoke pipes are all hot water bodies. The two ends of the internal passage of the smoke pipes are respectively connected with the flue gas transfer room and the flue gas confluence pipe. The upper end of the flue gas confluence pipe It is a smoke exhaust pipe that is closed inward. The upper end of the smoke exhaust pipe protrudes from the upper panel of the hot water area of the box body, and the protruding part of the upper end of the smoke exhaust pipe is inserted into the chimney; the front panel of the hot water area of the box body is burned. The space between the front panel of the hot water area of the box and the front panel of the combustion chamber is the flue gas transfer chamber, the lower part of the combustion chamber coaming is connected to the front end of the combustion chamber bottom coaming, and the rear end of the lower coaming of the combustion chamber is connected to the front end of the combustion chamber. The head is the secondary air guide plate, the space between the secondary air guide plate and the front panel of the cold water area of the box is the burner placement area, and the left and right ends of the burner placement area are closed by the side wall of the combustion chamber;

The flue gas generated by the combustion of gas flows from the combustion chamber through the flue between the fins of the fin plate and flows forward and upward, changes direction through the flue gas transfer chamber and flows into the flat flue pipe, from the outlet of the flat flue pipe into the flue gas confluence pipe, and passes through the exhaust pipe. The smoke outlet flows out of the box in the hot water area, and is discharged from the chimney plugged outside the box in the hot water area; because the utility model adopts a compound heat exchange structure that combines the fin plate outside the water body and the flat smoke tube inside the water body, The fins of the fin plate are used to absorb the high temperature heat in the combustion flame in the combustion chamber outside the water body, and the heat is transferred to the water body inside the box through the metal conduction of the fin plate, which can maximize the integrity and efficiency of the gas combustion reaction process. In addition, it can also maximize the reduction of gas flow resistance, reduce the heat exchange burden for the flat smoke tube set inside the water body to absorb and utilize the remaining low-temperature heat in the flue gas, and create the best conditions for setting the flow resistance of the flat smoke tube. The heat exchange area and heat exchange stroke of the flat flue pipe are maximized within the range of normal emission conditions, and the contradiction between the flue gas flow resistance, heat exchange area and heat exchange stroke is well resolved. At the same time, the utilization rate of heat absorption is significantly improved. The fin plate is inclined at a certain angle, and the combustion flame and high-temperature flue gas flow forward and upward, which can reduce the flow resistance. At the same time, the scale generated in the water body inside the fin plate can also fall to the cold water area of the box body backward and downward along the inclined angle. Conducive to the comprehensive and centralized discharge of scale. The purpose of adopting the heat exchange structure of the flat flue pipe is to increase the effective heat exchange area while maximizing the reduction of the surface area of the upper end face of the flat flue pipe in the horizontal direction. Correspondingly, the distance between the flat flue pipes is widened, which can effectively reduce the chance of scale remaining on the surface of the flat flue pipe. , At the same time, it is conducive to the upward flow of the generated steam from the gap between the adjacent flat smoke pipes, which is beneficial to the stability and durability of the steam engine operation.

The utility model has the beneficial effects of the burner that utilizes a plurality of split burners and a combustion bowl combined to do work on the tray:

It is beneficial for the matching burner to organize the gas to carry out a complete and sufficient combustion reaction, which is conducive to the smooth discharge of the generated flue gas, which is conducive to the full absorption and utilization of the heat of the high-temperature flue gas and the heat of the low-temperature flue gas, and is conducive to the smooth and centralized discharge of the scale. .

Description of drawings

The present utility model will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

FIG. 1 is a schematic structural diagram of a gas-fired steam engine heat exchanger combining a fin plate structure and a flat tube structure according to the present invention.

In the figure: combustion chamber 1; fin plate 2; flat smoke pipe 3; flue gas confluence pipe 4; smoke outlet 5; chimney 6; box hot water area 7; steam outlet 8; box cold water area 9; burner 10; Combustion chamber front wall 11-1; combustion chamber lower wall 11-2; combustion chamber side wall 11-3; secondary air guide plate 12; flue gas transfer chamber cold water inlet 13; Combustion chamber 15 ; flue gas transfer chamber 16 ; flue gas flow path 17 .

Detailed ways

The present embodiment will be described below with reference to FIG. 1. The present invention relates to a heat exchange structure of a gas steam engine, more specifically a heat exchanger of a gas steam engine combining a fin plate structure and a flat tube structure, including a fin plate 2 , flat smoke pipe 3, flue gas confluence pipe 4, smoke exhaust port 5, chimney 6, hot water area of box 7, steam outlet 8, cold water area of box 9, cold water inlet 13, burner 10, front wall of combustion chamber 11-1. The lower coaming plate 11-2 of the combustion chamber, the side coaming plate 11-3 of the combustion chamber, the secondary air guide plate 12, and the flue gas transfer chamber 16. It is characterized in that the heat exchanger box body includes a box body hot water area 7 and a box body cold water area 9, the bottom plate of the box body hot water area 7 is a fin plate 2, and the bottom surface of the fin plate 2 is provided with fins 2-1, The bottom surface of the finned plate 2 is provided with the finned side below which is the combustion chamber, and the upper surface of the finned plate is the hot water body. The front panel, the side with the low angle of inclination, is downwardly connected to the front panel of the cold water area 9 of the box body, the front panel of the hot water area is provided with a flat smoke pipe connection port, and the hot water exchange body of the hot water area 7 of the box body is provided with a flat panel. Smoke pipe 3, the flue gas inlet end of the flat smoke pipe 3 is welded with the connection port of the flat smoke pipe set on the front panel of the hot water area, and the flue gas outlet end of the flat smoke pipe is welded and connected with the flue gas confluence pipe 4, and the flat smoke pipe 3 is A rectangular tube with long top and bottom and short left and right, a plurality of flat tobacco pipes 3 are arranged in the left and right direction according to a certain spacing, the space between adjacent flat tobacco pipes 3 and the upper and lower spaces of the smoke pipes are both hot water bodies, and the interior of the flat tobacco pipes 3 The two ends of the passage are respectively connected with the flue gas transfer chamber 16 and the flue gas confluence pipe 4. The upper end of the flue gas confluence pipe 4 is a flue gas exhaust pipe that closes inwards. The protruding part of the upper end of the exhaust pipe is inserted into the chimney 6; the front of the front panel of the hot water area 7 of the box is the front panel 11-1 of the combustion chamber, the front panel of the hot water area of the box and the front panel 11 of the combustion chamber The space between -1 is the flue gas transfer chamber 16, the lower part of the combustion chamber front wall 11-1 is connected to the front end of the combustion chamber lower wall 11-2, and the rear end of the combustion chamber lower wall 11-2 is secondary air The space between the guide plate 12, the secondary air guide plate 12 and the front panel of the cold water area 9 of the box is the burner placement area, and the left and right ends of the burner placement area are closed by the combustion chamber side wall 11-3. The flue gas generated by the combustion of gas flows from the combustion chamber through the flue between the fins 2-1 of the fin plate 2 and flows forward and upward, changes direction through the flue gas transfer chamber 16 and flows into the flat flue pipe 3, and flows from the outlet of the flat flue pipe 3. The flue gas confluence pipe 4 flows out of the hot water area 7 of the box body through the smoke exhaust port, and is discharged from the chimney 6 plugged outside the hot water area 7 of the box body; because the utility model adopts the fin plate 2 outside the water body and the flat smoke The double heat exchange structure in which the tubes 3 are combined inside the water body uses the fins 2-1 of the fin plate 2 to absorb the high temperature heat in the combustion flame in the combustion chamber outside the water body, and transfers the heat to the box through the metal conduction of the fin plate 2 The water body inside the body can maximize the integrity and efficiency of the gas combustion reaction process, and can also minimize the gas flow resistance, absorb and utilize the remaining low-temperature heat in the flue gas for the flat smoke pipe 3 set inside the water body to reduce the heat exchange burden. At the same time, it creates the best conditions for setting the flow resistance of the flat flue pipe 3, which can maximize the heat exchange area and heat exchange stroke of the flat flue pipe 3 within the normal range of flue gas emission, and well resolve the flue gas flow resistance. In contrast to the contradiction between the heat exchange area and the heat exchange stroke, while ensuring that the gas is fully burned to release heat, the heat absorption and utilization rate is significantly improved. The fin plate 2 is inclined at a certain angle, and the combustion flame and high-temperature flue gas flow forward and upward, which can reduce the flow resistance. At the same time, the scale generated in the water body of the fin plate 2 can also follow the inclination angle to the cold water area 9 of the box body below the rear. Falling down is conducive to the comprehensive and centralized discharge of scale. The purpose of adopting the flat flue pipe 3 heat exchange structure is to increase the effective heat exchange area and at the same time minimize the surface area of the upper end face of the flat flue pipe 3 in the horizontal direction, and correspondingly widen the distance between the flat flue pipes, which can effectively reduce the scale on the flat flue pipe 3. The probability of surface retention, and at the same time, is conducive to the upward flow of the generated steam from the gap between the adjacent flat smoke pipes, which is beneficial to the stability and durability of the steam engine operation.

Of course, the above description does not limit the present utility model, and the present utility model is not limited to the above-mentioned examples. Changes, modifications, additions or replacements made by those of ordinary skill in the technical field within the essential scope of the present utility model also belong to the scope of the present utility model. The scope of protection of the face.

Claims (1)

1. A gas steam engine heat exchanger that combines a fin plate structure with a flat tube structure, including a combustion chamber, a fin plate, a flat smoke pipe, a flue gas confluence pipe, a smoke outlet, a chimney, a hot water area in the box, and a steam Outlet, cold water area of box, burner, front wall of combustion chamber, lower wall of combustion chamber, side wall of combustion chamber, secondary air deflector, cold water inlet of flue gas transfer chamber, scale discharge outlet, combustion chamber, smoke The gas transfer chamber and the flue gas flow path are characterized in that: the heat exchanger box includes a hot water area of the box body and a cold water area of the box body, the bottom plate of the hot water area of the box body is a fin plate, and the bottom surface of the fin plate is provided with fins The bottom surface of the fin plate is provided with fins. The lower side is the combustion chamber, and the top of the fin plate is the hot water body. The fin plate is inclined at a certain angle. The panel, the side with the lower angle of inclination, is downwardly connected to the front panel of the cold water area of the box body, the front panel of the hot water area is provided with a flat smoke pipe connection port, and the hot water exchange body of the hot water area is provided with a flat smoke pipe. The flue gas inlet end of the flat smoke pipe is welded with the connection port of the flat smoke pipe set on the front panel of the hot water area; The flue gas outlet end of the flat flue pipe is welded and connected to the flue gas confluence pipe. The flat flue pipe is a rectangular pipe with long top and bottom and short left and right. A plurality of flat flue pipes are arranged in a line in the left and right directions according to a certain distance. The space and the upper and lower spaces of the smoke pipe are both hot water bodies. The two ends of the inner passage of the smoke pipe are respectively connected with the flue gas transfer chamber and the flue gas confluence pipe. The upper end of the flue gas confluence pipe is a flue gas exhaust pipe closed inward. The head protrudes from the upper panel of the hot water area of the box body, and the protruding part of the upper end of the exhaust pipe is inserted into the chimney; the front panel of the hot water area of the box body is the front panel of the combustion chamber, and the front panel of the hot water area of the box body is connected with the chimney. The space between the front coaming plates of the combustion chamber is the flue gas transfer chamber. The lower part of the coaming plate of the combustion chamber is connected to the front end of the bottom coaming plate of the combustion chamber, and the rear end of the lower coaming plate of the combustion chamber is a secondary air guide plate. The space between the flow plate and the front panel of the cold water area of the box is the burner placement area, and the left and right ends of the burner placement area are closed by the side walls of the combustion chamber; the flue gas generated by the combustion of the gas passes from the combustion chamber through the fins of the fin plate. The flue between the slices flows forward and upward, changes direction through the flue gas transfer room and flows into the flat flue pipe, flows into the flue gas confluence pipe from the outlet of the flat flue pipe, flows out of the hot water area box through the exhaust port, and flows from the hot water area box body. Outer plugged chimney for discharge.

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