A steamer car with recycling flue gas waste heat function

Abstract

The utility model relates to a steamer car related technical field especially, but more particularly to a kind of steamer car with recycling flue gas waste heat function, including steamer car main body, the bottom of steamer car main body is connected with combustor, the inside bottom of steamer car main body is installed with steam generator, the top of smoke exhaust hood is connected with smoke pipe, the surface of smoke pipe is provided with flue gas waste heat recovery device.This kind of steamer car with recycling flue gas waste heat function, by setting up flue gas waste heat recovery device, high-temperature flue gas generated by gas combustion is first into heat exchange cylinder in discharging process, the heat exchange pipe in heat exchange cylinder can fully absorb the heat in flue gas, make the water that flows through heat exchange pipe temperature rise, the water after temperature rise is re-inflowed into steam generator by outlet pipe, provides preheating for the generation of steam, reduces the gas amount required for steam generator to heat water, thereby greatly reduce the energy consumption of steamer car, realizes the efficient use of energy.

Description

Technical Field

[0001] This utility model relates to the field of steamer cart technology, and in particular to a steamer cart with the function of recovering and utilizing waste heat from flue gas. Background Technology

[0002] Steamer carts are commonly used equipment for steaming and cooking food, and are widely used in canteens, hotels, restaurants, and other places. Their working principle is to use the heat generated by burning natural gas or other energy sources to heat water and convert it into steam, which is then used to steam the food placed inside the steamer. To avoid resource waste, a steamer cart with the function of recovering and utilizing waste heat from flue gas is particularly needed.

[0003] In traditional steamer carts, a large amount of high-temperature flue gas generated by the combustion of gas is directly emitted into the external environment. This flue gas carries a lot of heat and is wasted without being recycled, which not only causes a huge loss of energy, but also makes the energy consumption of steamer carts remain high. Utility Model Content

[0004] The purpose of this utility model is to provide a steamer cart with the function of recovering and utilizing waste heat from flue gas, which can recover waste heat from flue gas to reduce energy consumption and solve the problem of energy waste in traditional steamer carts.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steamer cart with the function of recovering and utilizing waste heat from flue gas, comprising a steamer cart body, a burner connected to the bottom of the steamer cart body, a controller provided on the surface of the burner, a base frame connected to the bottom of the burner, pulleys installed at the bottom of the base frame, a steam generator installed inside the bottom of the steamer cart body, the burner connected to the steam generator via a pipe, a steamer layer placed inside the steamer cart body, a flow hole provided on the surface of the steamer layer, a smoke exhaust hood installed at the top of the steamer cart body, a smoke exhaust pipe connected to the top of the smoke exhaust hood, and a waste heat recovery device for flue gas provided on the surface of the smoke exhaust pipe;

[0006] The flue gas waste heat recovery device includes a heat exchange cylinder, with both ends of the heat exchange cylinder installed in the middle of the flue pipe. Flanges are connected to the surfaces of both the flue pipe and the heat exchange cylinder, and fixing bolts are connected to the surfaces of the flanges. An installation groove is formed on the inner side of the heat exchange cylinder. A connecting plate is installed inside the heat exchange cylinder, and filter holes are formed on the surface of the connecting plate. A heat exchange tube passes through the surface of the connecting plate. Mounting blocks are connected to both ends of the connecting plate. Positioning holes are formed at the inner ends of the mounting blocks, and springs are connected to the inner ends of the positioning holes. Limiting plates are connected to the outer ends of the springs, and wedge-shaped locking blocks are connected to the outer sides of the limiting plates. A wedge-shaped groove is formed on the inner side of the installation groove. A water pipe is connected to the bottom of the heat exchange tube, and a self-priming pump is installed on the surface of the water pipe.

[0007] Preferably, the outer wall surface of the steamer cart body is provided with a heat insulation layer, and the heat insulation layer is tightly connected to the steamer cart body.

[0008] Preferably, four identical sets of pulleys are provided at the bottom of the base frame, and each set of pulleys is equipped with a braking function.

[0009] Preferably, the steamer layers are arranged in multiple identical sets inside the steamer cart body, and the flow holes are distributed in multiple sets at equal intervals on the surface of each set of steamer layers.

[0010] Preferably, the heat exchange cylinder is connected to the middle of the flue pipe via a flange and fixing bolts, and multiple sets of fixing bolts are evenly distributed on the surface of the flange.

[0011] Preferably, the connecting plate installs the heat exchange tube inside the heat exchange cylinder via a mounting block and a mounting groove, the size of which is adapted to the size of the mounting groove.

[0012] Preferably, one end of the water pipe is connected to the steam generator, and the self-priming pump quickly delivers the water in the water pipe, which has been heated by heat exchange, to the steam generator.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This steamer cart with the function of recovering and utilizing waste heat from flue gas, by setting up a waste heat recovery device for flue gas, allows the high-temperature flue gas generated by the combustion of gas to first enter the heat exchange cylinder during the discharge process. The heat exchange tubes in the heat exchange cylinder can fully absorb the heat in the flue gas, thereby raising the temperature of the water flowing through the heat exchange tubes. The heated water then flows back into the steam generator through the water outlet pipe, providing preheating for steam generation and reducing the amount of gas required for the steam generator to heat the water, thus greatly reducing the energy consumption of the steamer cart and achieving efficient energy utilization. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the main body of the steamer cart of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the flue gas waste heat recovery device of this utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Steamer cart body; 2. Burner; 3. Controller; 4. Base frame; 5. Pulley; 6. Steam generator; 7. Steamer layer; 8. Flow hole; 9. Exhaust hood; 10. Exhaust pipe; 11. Waste heat recovery device; 1101. Heat exchange cylinder; 1102. Flange; 1103. Fixing bolt; 1104. Mounting groove; 1105. Connecting plate; 1106. Filter hole; 1107. Heat exchange tube; 1108. Mounting block; 1109. Positioning hole; 1110. Spring; 1111. Limiting plate; 1112. Wedge-shaped locking block; 1113. Wedge-shaped groove; 1114. Water pipe; 1115. Self-priming pump. Detailed Implementation

[0019] 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 protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a steamer cart with the function of recovering and utilizing waste heat from flue gas, including a steamer cart body 1, a burner 2 connected to the bottom of the steamer cart body 1, a controller 3 provided on the surface of the burner 2, a base frame 4 connected to the bottom of the burner 2, a pulley 5 installed at the bottom of the base frame 4, a steam generator 6 installed at the bottom inside the steamer cart body 1, the burner 2 connected to the steam generator 6 through a pipe, a steamer layer 7 placed inside the steamer cart body 1, a flow hole 8 opened on the surface of the steamer layer 7, a smoke hood 9 installed at the top of the steamer cart body 1, a smoke exhaust pipe 10 connected to the top of the smoke hood 9, and a waste heat recovery device 11 provided on the surface of the smoke exhaust pipe 10;

[0021] The flue gas waste heat recovery device 11 includes a heat exchange cylinder 1101. Both ends of the heat exchange cylinder 1101 are installed in the middle of the flue pipe 10. Flanges 1102 are connected to the surfaces of both the flue pipe 10 and the heat exchange cylinder 1101. Fixing bolts 1103 are connected to the surfaces of the flanges 1102. An installation groove 1104 is provided on the inner side of the heat exchange cylinder 1101. A connecting plate 1105 is installed inside the heat exchange cylinder 1101. Filter holes 1106 are provided on the surface of the connecting plate 1105. A heat exchange tube 1107 passes through the surface of the connecting plate 1105. Mounting blocks 1108 are connected to both ends of the connecting plate 1105. Positioning holes 1109 are provided at the inner ends of the mounting blocks 1108. Springs 1110 are connected to the inner ends of the positioning holes 1109. A limiting plate 1111 is connected, and a wedge-shaped locking block 1112 is connected to the outer side of the limiting plate 1111. A wedge-shaped groove 1113 is opened on the inner side of the mounting groove 1104. A water pipe 1114 is connected to the bottom of the heat exchange tube 1107, and a self-priming pump 1115 is installed on the surface of the water pipe 1114. Through the setting of the flue gas waste heat recovery device 11, the high-temperature flue gas generated by the burner 2 is collected by the exhaust hood 9 and enters the heat exchange cylinder 1101 through the exhaust pipe 10. In the heat exchange cylinder 1101, the high-temperature flue gas exchanges heat with the medium in the heat exchange tube 1107. At this time, the heat in the flue gas is transferred to the medium in the tube through the tube wall of the heat exchange tube 1107, thereby heating the medium. During the installation of the heat exchange tube 1107, the connecting plate 1105 is first connected along with the heat exchange tube. The heat exchange tube 1107 is placed inside the heat exchange cylinder 1101, aligning the mounting block 1108 with the mounting groove 1104. Pushing the connecting plate 1105 causes the wedge-shaped locking block 1112 to be squeezed by the inner wall of the mounting groove 1104, overcoming the elastic force of the spring 1110. This causes the limiting plate 1111 to compress the spring 1110, retracting the wedge-shaped locking block 1112 into the positioning hole 1109. When the mounting block 1108 is fully inserted into the mounting groove 1104 and reaches a specific position, the spring 1110 returns to its elastic deformation, pushing the limiting plate 1111 and the wedge-shaped locking block 1112 outwards. The wedge-shaped locking block 1112 precisely engages in the wedge-shaped groove 1113, firmly connecting the connecting plate 1105 to the heat exchange cylinder 1101, thereby stably fixing the heat exchange tube 1107 and ensuring its proper functioning during heat exchange. The heat exchange tubes 1107 remain stationary, ensuring stable and efficient heat exchange. The filter holes 1106 on the surface of the connecting plate 1105 provide preliminary filtration of larger particulate impurities in the flue gas, preventing them from adhering to the surface of the heat exchange tubes 1107 and affecting heat exchange efficiency. Simultaneously, the exhaust pipe 10 is connected to the heat exchange cylinder 1101 via a flange 1102 and fixing bolts 1103. This detachable connection facilitates future maintenance and replacement of components such as the heat exchange tubes 1107 and connecting plate 1105 inside the heat exchange cylinder 1101. The medium in the water pipe 1114 circulates under the action of the self-priming pump 1115. The self-priming pump 1115 draws in the low-temperature medium from external sources or the steam generator 6, causing it to flow through the heat exchange tubes 1107, absorbing heat from the high-temperature flue gas and raising its temperature.The water is then transported via pipe 1114 to locations requiring heat energy, such as the steam generator 6, to preheat the water. This process recovers and utilizes the waste heat from the flue gas, reducing energy waste and improving the overall energy efficiency of the steamer cart.

[0022] Furthermore, the outer wall surface of the steamer cart body 1 is provided with a heat insulation layer, and the heat insulation layer is tightly connected to the steamer cart body 1. Through the setting of the heat insulation layer, the heat inside the steamer cart can be effectively prevented from dissipating to the outside, reducing heat loss. During the operation of the steamer cart, the heat generated by the internal steam and food cooking is firmly locked in, which not only reduces energy consumption, but also prevents the ambient temperature from becoming too high due to heat leakage, improves the working environment of the operators, and prevents accidental burns, thus improving the safety of use.

[0023] Furthermore, four identical sets of pulleys 5 are installed at the bottom of the base frame 4, and each set of pulleys 5 is equipped with a braking function. Through the installation of pulleys 5, four sets of pulleys with braking function are installed at the bottom of the base frame 4, giving the steamer cart flexible mobility. Operators can easily push the steamer cart to move in different areas such as the kitchen and dining room to meet the usage needs of different scenarios.

[0024] Furthermore, multiple sets of steamer layers 7 are arranged inside the main body 1 of the steamer cart, and multiple sets of flow holes 8 are evenly distributed on the surface of each set of steamer layers 7. Through the arrangement of steamer layers 7 and flow holes 8, multiple sets of steamer layers 7 provide ample space for food placement, allowing for the simultaneous steaming of various types and quantities of food, greatly improving the efficiency of the steamer cart and meeting the steaming needs of large quantities of food in canteens, hotels, and other places. The evenly distributed flow holes 8 allow steam to circulate evenly and smoothly between each steamer layer, penetrating the food in each layer of steamer. The steam fully contacts the food through the flow holes 8, achieving efficient heat transfer, ensuring that the food is heated evenly, avoiding local overcooking or undercooking, and significantly improving the steaming quality of the food.

[0025] Furthermore, the heat exchange cylinder 1101 is connected to the middle of the flue pipe 10 via a flange 1102 and fixing bolts 1103. Multiple sets of fixing bolts 1103 are evenly distributed on the surface of the flange 1102. Through the setting of the flange 1102 and fixing bolts 1103, the multiple sets of evenly distributed fixing bolts 1103 tightly connect the flange 1102, so that the heat exchange cylinder 1101 is firmly installed in the middle of the flue pipe 10. This connection method ensures that the heat exchange cylinder 1101 will not loosen or fall off during the flue gas flow, ensuring that the flue gas can stably enter the heat exchange cylinder 1101 for heat exchange. At the same time, the detachable design facilitates the quick disassembly of the heat exchange cylinder 1101 during equipment maintenance or repair, making it convenient to clean and replace internal components such as the heat exchange tube 1107 and connecting plate 1105, reducing the difficulty of equipment maintenance and extending the service life of the equipment.

[0026] Furthermore, the connecting plate 1105 installs the heat exchange tube 1107 inside the heat exchange cylinder 1101 via the mounting block 1108 and mounting groove 1104. The size of the mounting block 1108 is adapted to the size of the mounting groove 1104. Through the setting of the mounting groove 1104 and the mounting block 1108, the two sizes are adapted to form a precise fitting structure, which firmly connects the connecting plate 1105 and the heat exchange cylinder 1101 like a "mortise and tenon". During the heat exchange process, the mounting groove 1104 and the mounting block 1108 can effectively fix the heat exchange tube 1107, preventing it from shifting or shaking due to the impact of flue gas or the vibration of water flow, ensuring full contact between the heat exchange tube 1107 and the flue gas, and maintaining stable and efficient heat exchange. In addition, this structure facilitates the disassembly and installation of the connecting plate 1105 and the heat exchange tube 1107, and facilitates regular cleaning and maintenance of the heat exchange components, ensuring that the performance of the flue gas waste heat recovery device is always in good condition.

[0027] Furthermore, one end of the water pipe 1114 is connected to the steam generator 6. The self-priming pump 1115 quickly transports the water in the water pipe 1114, which has been heated by heat exchange, to the steam generator 6. Through the arrangement of the water pipe 1114 and the self-priming pump 1115, the self-priming pump 1115 provides power for the water circulation in the water pipe 1114, and quickly and stably transports the water that has been heated by heat exchange in the heat exchange cylinder 1101 to the steam generator 6. After this preheated water enters the steam generator 6, it can reduce the energy required for the steam generator 6 to heat the water into steam, reduce energy consumption, and improve energy utilization efficiency. At the same time, the stable water supply also ensures that the steam generator 6 can continuously generate steam, providing a stable heat source for the steaming of food in the steamer layer 7, and ensuring the continuity and stability of the food steaming process.

[0028] Working principle: First, the operator sets the combustion parameters through the controller 3 on the surface of the burner 2 and turns on the burner 2. Gas is delivered to the burner 2 through the pipeline, and the igniter ignites the gas. The burner 2 begins stable combustion, and the heat generated by the combustion is transferred to the steam generator 6 through the pipeline, providing the initial heat source for steam generation. At the same time, the pulley 5 with a braking function ensures that the steam cart is stably parked in the designated position before starting, ensuring the safe operation of the equipment. Under the heat provided by the burner 2, the steam generator 6 heats the water inside and converts it into steam. The steam rises through the pipeline inside the main body 1 of the steam cart and diffuses evenly into each layer of steamers through the flow holes 8 at the bottom of the steamer layer 7. Because multiple sets of steamer layers 7 are stacked vertically and the flow holes 8 are evenly distributed, the steam is generated in a controlled manner. Steam flows smoothly and evenly between the layers of steamers, making full contact with the food placed in the steamer layer 7. Through heat transfer, the food is steamed. During this process, the insulation layer on the outer wall of the steamer cart body 1 effectively prevents internal steam heat from escaping to the outside, maintaining a high-temperature environment inside the steamer cart. This ensures that the steam heat is concentrated on steaming the food, reducing energy waste and lowering the risk of burns to operators. The high-temperature flue gas generated by the burner 2 is collected by the exhaust hood 9 and enters the exhaust pipe 10, then flows into the heat exchange cylinder 1101. Inside the heat exchange cylinder 1101, the high-temperature flue gas exchanges heat with the medium inside the heat exchange tube 1107. The heat from the flue gas is transferred through the tube wall of the heat exchange tube 1107 to the medium inside the tube, thus lowering the medium temperature. As the temperature rises, the filter holes 1106 on the surface of the connecting plate 1105 initially filter larger particulate impurities in the flue gas, preventing impurities from adhering to the surface of the heat exchange tube 1107 and affecting the heat exchange efficiency. The mating structure of the mounting groove 1104 with the mounting block 1108, the wedge-shaped locking block 1112, and the wedge groove 1113 ensures that the heat exchange tube 1107 is firmly installed and will not shift even under the impact of high-temperature flue gas, ensuring stable and efficient heat exchange. At the same time, the self-priming pump 1115 starts, drawing the low-temperature medium in the water pipe 1114 from the outside or the steam generator 6, allowing it to flow through the heat exchange tube 1107 to absorb heat. The heated medium is then transported back to the steam generator 6 through the water pipe 1114, and the preheated water enters the steam generator. After step 6, the energy required to heat water into steam is significantly reduced, the gas consumption of burner 2 is lowered, and efficient recovery and utilization of flue gas waste heat is achieved, improving the overall energy utilization efficiency of the steamer cart. The low-temperature flue gas after heat exchange continues to be discharged along exhaust pipe 10. When the steamer cart needs to be moved, the operator releases the brake function of pulley 5. With the flexible steering and rolling performance of the four sets of pulleys, the steamer cart can be easily moved in areas such as the kitchen and dining room, transferring it to different work areas such as food steaming and delivery. After reaching the designated location, the operator uses the brake device of pulley 5 to securely fix the steamer cart, preventing it from accidentally sliding and affecting food steaming operations or causing safety accidents during subsequent use. Throughout the entire operation...The burner 2, steam generator 6, flue gas waste heat recovery device 11, and steamer layer 7 work together seamlessly to achieve efficient food cooking while reducing energy consumption through flue gas waste heat recovery. Simultaneously, the design of the insulation layer and pulleys 5 enhances the equipment's safety and ease of use, meeting the needs of canteens, hotels, and other venues for efficient, energy-saving, and safe cooking equipment. This completes the usage process of a steamer cart with flue gas waste heat recovery function.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steamer cart with the function of recovering and utilizing waste heat from flue gas, comprising a steamer cart body (1), characterized in that: The bottom of the main body (1) of the steamer cart is connected to a burner (2), the surface of the burner (2) is provided with a controller (3), the bottom of the burner (2) is connected to a base frame (4), the bottom of the base frame (4) is equipped with a pulley (5), the bottom of the main body (1) of the steamer cart is equipped with a steam generator (6), the burner (2) is connected to the steam generator (6) through a pipe, the inside of the main body (1) of the steamer cart is equipped with a steamer layer (7), the surface of the steamer layer (7) is provided with a flow hole (8), the top of the main body (1) of the steamer cart is equipped with a smoke hood (9), the top of the smoke hood (9) is connected to a smoke exhaust pipe (10), and the surface of the smoke exhaust pipe (10) is provided with a flue gas waste heat recovery device (11). The flue gas waste heat recovery device (11) includes a heat exchange cylinder (1101). Both ends of the heat exchange cylinder (1101) are installed in the middle of the flue pipe (10). Flanges (1102) are connected to the surfaces of both the flue pipe (10) and the heat exchange cylinder (1101). Fixing bolts (1103) are connected to the surfaces of the flanges (1102). An installation groove (1104) is provided on the inner side of the heat exchange cylinder (1101). A connecting plate (1105) is installed inside the heat exchange cylinder (1101). Filter holes (1106) are provided on the surface of the connecting plate (1105). A heat exchanger is perforated through the surface of the connecting plate (1105). The tube (1107) has mounting blocks (1108) connected to both ends of the connecting plate (1105). The mounting block (1108) has a positioning hole (1109) at its inner end. The positioning hole (1109) has a spring (1110) connected to its inner end. The spring (1110) has a limit plate (1111) connected to its outer end. The limit plate (1111) has a wedge-shaped locking block (1112) connected to its outer side. The mounting groove (1104) has a wedge-shaped groove (1113) on its inner side. The heat exchange tube (1107) has a water pipe (1114) connected to its bottom. The water pipe (1114) has a self-priming pump (1115) installed on its surface.

2. A steamer basket trolley with a function of recycling waste heat of flue gas according to claim 1, characterized in that: The outer wall surface of the steamer cart body (1) is provided with a heat insulation layer, and the heat insulation layer is closely connected to the steamer cart body (1).

3. The steamer basket trolley with recycling flue gas waste heat function according to claim 1, characterized in that: The pulleys (5) are provided in four identical sets at the bottom of the base frame (4), and each set of pulleys (5) is equipped with a braking function.

4. The steamer basket trolley with recycling flue gas waste heat function according to claim 1, characterized in that: The steamer layer (7) is provided in multiple identical sets inside the steamer cart body (1), and the flow holes (8) are distributed in multiple sets at equal intervals on the surface of each set of steamer layers (7).

5. The colander car with recycling flue gas waste heat function according to claim 1, characterized in that: The heat exchange cylinder (1101) is connected to the middle of the flue pipe (10) via a flange (1102) and fixing bolts (1103), and multiple sets of fixing bolts (1103) are evenly distributed on the surface of the flange (1102).

6. The steamer basket cart with recycling flue gas waste heat function according to claim 1, characterized in that: The connecting plate (1105) installs the heat exchange tube (1107) inside the heat exchange cylinder (1101) via the mounting block (1108) and the mounting groove (1104). The size of the mounting block (1108) is adapted to the size of the mounting groove (1104).

7. The colander car with recycling flue gas waste heat function according to claim 1, characterized in that: One end of the water pipe (1114) is connected to the steam generator (6), and the self-priming pump (1115) quickly transports the water in the water pipe (1114) that has been heated by heat exchange to the steam generator (6).

Images