Energy-saving steam furnace
By using the design of the column-type gas-gas heat exchanger and the fin coil-type gas-liquid heat exchanger in the steam furnace, the recycling cycle of steam and flame exhaust is achieved, solving the problem of low steam heat energy utilization, significantly reducing the number of Energy consumption and water consumption.
Patent Information
- Application Number
- CN202420783797.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The steam heat utilization rate of existing steam furnaces is low during the cooking process, resulting in serious energy waste. High-temperature steam is discharged only after passing through the steamed items once.
An energy-saving steam furnace is designed, using a column-type gas-gas heat exchanger and a fin coil-type gas-liquid heat exchanger to recover and circulate the steam through a steam pump, and the steam exhaust heat is transferred by a gas-gas heat exchanger. Recirculate on the burning fresh air to form condensate to replenish boiler water and reduce energy consumption.
Effectively recover waste heat from steam and flame exhaust gas, reduces steam heat energy waste and reduces energy consumption. Especially when the steam temperature reaches 100℃ at normal pressure, reduces energy input by 70%, greatly reducing energy consumption during the cooking process .
Smart Images
Figure CN222143014U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam furnaces, in particular to an energy-saving steam furnace. Background Art
[0002] Steamers have a wide range of uses in the fields of national production and life, such as steaming rice, steamed buns, and steamed dumplings.
[0003] No matter how efficient the steamer made by the known technology is in converting energy into steam energy, the energy waste is very serious; because the thermal energy utilization rate of the steam generated by the steamer made by the known technology when acting on the steamed items is extremely low - the high-temperature steam only passes over the steamed items once and is discharged into the atmosphere.
[0004] In view of this, in order to overcome the above technical problems, the utility model proposes an energy-saving steam boiler to solve the above technical problems. Utility Model Content
[0005] The main purpose of the utility model is to provide an energy-saving steam boiler, wherein a steamer body is placed on the upper end surface of a tray, a steamer cover with a steam outlet is provided on the top of the steamer body, a steam pump outlet pipe is connected to the boiler at one end away from the steam pump, a steam pump suction pipe is connected to a steam recovery pipe at one end away from the steam pump, the steam pump suction pipe is connected to a shell-and-tube gas-to-gas heat exchanger through an overflow steam pipe, and one end of the steam recovery pipe is inserted into the steam outlet of the steamer cover, thereby enabling steam recovery and circulation, and effectively solving the problems in the background technology.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] An energy-saving steam furnace comprises a boiler and a shell-and-tube gas-to-gas heat exchanger, wherein the boiler is installed in a bracket, a tray is fixedly installed on the top of the bracket, a movable table top is installed on one end of the tray, a shell-and-tube gas-to-gas heat exchanger is installed on the end of the bracket away from the movable table top, a fin coil gas-to-liquid heat exchanger A and a fin coil gas-to-liquid heat exchanger B are respectively installed on the side of the shell-and-tube gas-to-gas heat exchanger away from the tray, an exhaust fan is installed on the top of the shell-and-tube gas-to-gas heat exchanger, and a waste combustion gas outlet is provided on the top of the shell-and-tube gas-to-gas heat exchanger; a steamer body is placed on the upper end surface of the tray, a steamer cover with a steam outlet is provided on the top of the steamer body, a steam pump is installed on the lower part of the bracket, a steam pump outlet pipe and a steam pump suction pipe are respectively provided on the top of the steam pump, the steam pump outlet pipe is connected to the boiler at one end away from the steam pump, the steam pump suction pipe is connected to a steam recovery pipe at one end away from the steam pump, and the steam pump suction pipe is connected to the shell-and-tube gas-to-gas heat exchanger through an overflow steam pipe.
[0008] By adopting the above technical scheme, a fin coil gas-liquid heat exchanger A and a fin coil gas-liquid heat exchanger B are respectively installed on the side of the shell-and-tube gas-gas heat exchanger away from the tray, and an exhaust fan is installed on the top of the shell-and-tube gas-gas heat exchanger, and a waste combustion gas outlet is provided on the top of the shell-and-tube gas-gas heat exchanger, so that the burner can be improved and the steam can preheat the combustion air.
[0009] Preferably, the fin coil type gas-liquid heat exchanger A is located directly above the fin coil type gas-liquid heat exchanger B. The fin coil type gas-liquid heat exchanger A and the fin coil type gas-liquid heat exchanger B are connected by a hot water pipe and a cold water pipe. The cold water inlet is connected to the tap water pipe, and the cold water heated by the steam exhaust gas is sent to the boiler as boiler make-up water.
[0010] Preferably, a high-temperature fresh air duct is provided at the lower portion of the shell-and-tube gas-to-gas heat exchanger; and a steam-water separator is connected to the side of the shell-and-tube gas-to-gas heat exchanger close to the steam pump.
[0011] Preferably, a steam outlet of the boiler is provided with a steam-water separator, and the steam outlet of the steam-water separator is connected to the steamer through a tray.
[0012] Preferably, an aeration pipe, a heat pipe and a furnace are provided inside the boiler, and the aeration pipe and the heat pipe are both located above the furnace.
[0013] Preferably, a fire grate assembly is provided at the lower portion of the boiler at the location of the furnace, and a fire viewing window is provided at the lower portion of the boiler near the steam pump.
[0014] Preferably, a high-temperature fresh air duct is installed at the lower part of the tube-in-tube air-to-air heat exchanger away from the tray to the fire bar.
[0015] Preferably, a condensate outlet is provided at the bottom end of the fin coil type gas-liquid heat exchanger B, and the condensate is drained into the boiler through a hose. A normal temperature fresh air inlet is provided at the lower part of one side of the fin coil type gas-liquid heat exchanger A.
[0016] Preferably, an overflow steam inlet is provided between the fin coil type gas-liquid heat exchanger A and the fin coil type gas-liquid heat exchanger B.
[0017] Preferably, a pump air intake connecting pipe is connected to one side of the shell-and-tube air-to-gas heat exchanger, a high-temperature fresh air connecting pipe is installed at the lower part of the shell-and-tube air-to-gas heat exchanger close to the pump air intake connecting pipe, and a breeze switch is installed on the high-temperature fresh air connecting pipe.
[0018] Beneficial effects of the utility model:
[0019] 1. The energy-saving steam boiler described in the utility model can fully recover the waste heat of flame tail gas and steam tail gas, and transfer it to the combustion fresh air to participate in the recirculation again;
[0020] 2. The energy-saving steam boiler described in the utility model adopts a steam pump to circulate steam in the boiler, steam-water separator, steamer, steam recovery pipe, steam pump and boiler, and uses an air-to-air heat exchanger to absorb the waste heat of steam tail gas by fresh air to form condensed water, which is then drained into the boiler for reuse, thereby greatly reducing the waste of steam heat energy and greatly reducing water consumption;
[0021] 3. The energy-saving steam furnace described in the utility model reduces energy input by 70% when the circulating steam temperature reaches 100°C, based on the characteristic that the maximum temperature of steam under normal pressure is only 100°C, thereby greatly reducing energy consumption without affecting the requirements of the cooking process. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0023] Figure 1 The utility model is a schematic structural diagram of an energy-saving steam furnace.
[0024] Figure 2 The utility model is an energy-saving steam boiler Figure 1 AA section view.
[0025] Figure 3 The utility model is an energy-saving steam boiler Figure 2 BB cross-sectional view.
[0026] Figure 4 The utility model is an energy-saving steam boiler Figure 1 A-direction view.
[0027] In the figure: 1. movable table; 2. bracket; 3. aeration pipe; 4. boiler; 5. tray; 6. shell-and-tube gas-to-gas heat exchanger; 7. exhaust gas outlet; 8. exhaust fan; 9. fin coil gas-to-liquid heat exchanger A; 10. normal temperature fresh air inlet; 11. overflow steam inlet; 12. hot water pipe; 13. cold water pipe; 14. fin coil gas-to-liquid heat exchanger B; 15. condensed water outlet; 16. high temperature fresh air inlet; 17. Wind to fire grate; 17. Heat pipe; 18. Furnace; 19. Fire grate assembly; 20. Pump air intake connection pipe; 21. High-temperature fresh air connection pipe; 22. Breeze switch; 23. Steamer body; 24. Steamer cover; 25. Steam recovery pipe; 26. Steam pump; 27. Steam pump outlet pipe; 28. Fire viewing window; 29. Steam pump air intake pipe; 30. High-temperature fresh air pipe; 31. Overflow steam pipe; 32. Steam-water separator. DETAILED DESCRIPTION
[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0029] like Figure 1-4 As shown, an energy-saving steam furnace includes a boiler 4 and a shell-and-tube gas-to-gas heat exchanger 6, wherein the boiler 4 is installed in a bracket 2, a tray 5 is fixedly installed on the top of the bracket 2, a movable table top 1 is installed on one end of the tray 5, and a shell-and-tube gas-to-gas heat exchanger 6 is installed on the end of the bracket 2 away from the movable table top 1, a fin coil gas-to-liquid heat exchanger A9 and a fin coil gas-to-liquid heat exchanger B14 are respectively installed on the side of the shell-and-tube gas-to-gas heat exchanger 6 away from the tray 5, an exhaust fan 8 is installed on the top of the shell-and-tube gas-to-gas heat exchanger 6, and a waste combustion gas outlet 7 is provided on the top of the shell-and-tube gas-to-gas heat exchanger 6, so that the burner can be improved, and the steam can preheat the combustion air, thereby saving energy.
[0030] As an embodiment of the utility model, a steamer body 23 is placed on the upper end surface of the tray 5, and a steamer cover 24 with a steam outlet is provided at the top of the steamer body 23. A steam pump 26 is installed at the lower part of the bracket 2. A steam pump outlet pipe 27 and a steam pump suction pipe 29 are respectively provided at the top of the steam pump 26. The top of the steam pump outlet pipe 27 is much higher than the horizontal plane of the boiler to prevent the boiler water from backflowing. The end of the steam pump outlet pipe 27 away from the steam pump 26 is connected to the boiler 4, and the end of the steam pump suction pipe 29 away from the steam pump 26 is connected to the steam recovery pipe 25. The steam pump suction pipe 29 is connected to the shell-and-tube gas-to-gas heat exchanger 6 through the overflow steam pipe 31. One end of the steam recovery pipe 25 is inserted into the steamer cover 24, so that the steam can be utilized.
[0031] As an embodiment of the present utility model, the fin coil type gas-liquid heat exchanger A9 is located directly above the fin coil type gas-liquid heat exchanger B14, and the fin coil type gas-liquid heat exchanger A9 and the fin coil type gas-liquid heat exchanger B14 are connected by a hot water pipe 12 and a cold water pipe 13; a high-temperature fresh air pipe 30 is provided at the lower part of the shell-and-tube gas-to-gas heat exchanger 6, and the steam-water separator 32 is arranged above one side of the boiler 4 under the tray 5, and the steam inlet of the steam-water separator 32 is connected to the steam outlet of the boiler 4, and the steam outlet pipe of the steam-water separator 32 passes through the opening of the tray 5 and leads to the steamer.
[0032] An aeration pipe 3, a heat pipe 17 and a furnace 18 are provided inside the boiler 4, and the aeration pipe 3 and the heat pipe 17 are both located above the furnace 18; a fire grate assembly 19 is provided at the lower part of the boiler 4 at the position of the furnace 18, a fire viewing window 28 is provided at the lower part of the boiler 4 close to the steam pump 26, and a high-temperature fresh air to fire grate 16 is installed at the lower part of the shell-and-tube gas-to-gas heat exchanger 6 away from the tray 5. The design of the fire viewing window 28 facilitates the viewing of the combustion situation in the boiler 4.
[0033] As an embodiment of the present utility model, a condensate outlet 15 is provided at the bottom end of the fin coil gas-liquid heat exchanger B14, and the condensate flows back to the boiler 4 through a hose connecting the condensate outlet 15 and the boiler 4; a normal temperature fresh air inlet 10 is provided at the lower part of one side of the fin coil gas-liquid heat exchanger A9; an overflow steam inlet 11 is provided between the fin coil gas-liquid heat exchanger A9 and the fin coil gas-liquid heat exchanger B14; a pump suction port connecting pipe 20 is connected to one side of the shell-and-tube gas-gas heat exchanger 6, and a high-temperature fresh air connecting pipe 21 is installed at the lower part of the side of the shell-and-tube gas-gas heat exchanger 6 close to the pump suction port connecting pipe 20, and a breeze switch 22 is installed on the high-temperature fresh air connecting pipe 21, so as to facilitate the detection of high-temperature fresh air.
[0034] It should be noted that the utility model is an energy-saving steam furnace, and the shell-and-tube gas-to-gas heat exchanger 6 is respectively installed with a fin coil gas-to-liquid heat exchanger A9 and a fin coil gas-to-liquid heat exchanger B14 on the side away from the tray 5, an exhaust fan 8 is installed on the top of the shell-and-tube gas-to-gas heat exchanger 6, and a waste combustion gas outlet 7 is provided on the top of the shell-and-tube gas-to-gas heat exchanger 6. A steamer body 23 is placed on the upper end surface of the tray 5, and a steamer cover 24 with a steam outlet is provided on the top of the steamer body 23. A steam pump 26 is installed at the lower part of the bracket 2, and a steam pump outlet pipe 27 and a steam pump suction pipe 29 are respectively provided on the top of the steam pump 26. The end of the steam pump outlet pipe 27 away from the steam pump 26 is connected to the boiler 4, and the end of the steam pump suction pipe 29 away from the steam pump 26 is connected to the steam recovery pipe 25, and the steam pump suction pipe 29 is connected to the shell-and-tube gas-to-gas heat exchanger 6 through an overflow steam pipe 31;
[0035] When the circulating steam reaches 100 degrees, the central controller instructs the burner to reduce its power by 70%. The remaining 30% of the power is required to ensure that the circulating steam temperature does not drop, otherwise the power needs to be increased or decreased. When the circulating steam temperature drops after low-temperature steamed items are added, the burner is supplied with 100% power.
[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. 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, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An energy-saving steam boiler, characterized in that: The invention comprises a boiler (4) and a shell-and-tube gas-to-gas heat exchanger (6), wherein the boiler (4) is installed in a bracket (2), a tray (5) is fixedly installed at the top of the bracket (2), a movable table top (1) is installed at one end of the tray (5), the shell-and-tube gas-to-gas heat exchanger (6) is installed at one end of the bracket (2) away from the movable table top (1), a fin coil gas-to-liquid heat exchanger A (9) and a fin coil gas-to-liquid heat exchanger B (14) are installed at the side of the shell-and-tube gas-to-gas heat exchanger (6) away from the tray (5), an exhaust fan (8) is installed at the top of the shell-and-tube gas-to-gas heat exchanger (6), and a waste combustion gas outlet (7) is provided at the top of the shell-and-tube gas-to-gas heat exchanger (6); A steamer body (23) is placed on the upper end surface of the tray (5), and a steamer cover (24) with a steam outlet is provided at the top of the steamer body (23). A steam pump (26) is installed at the lower part of the bracket (2), and a steam pump outlet pipe (27) and a steam pump suction pipe (29) are provided at the top of the steam pump (26). The end of the steam pump outlet pipe (27) away from the steam pump (26) is connected to the boiler (4), and the end of the steam pump suction pipe (29) away from the steam pump (26) is connected to the steam recovery pipe (25). The steam pump suction pipe (29) is connected to the shell-and-tube gas-to-gas heat exchanger (6) through an overflow steam pipe (31).
2. The energy-saving steam boiler according to claim 1, characterized in that: The fin coil type gas-liquid heat exchanger A (9) is located directly above the fin coil type gas-liquid heat exchanger B (14), and the fin coil type gas-liquid heat exchanger A (9) and the fin coil type gas-liquid heat exchanger B (14) are connected via a hot water pipe (12) and a cold water pipe (13).
3. The energy-saving steam boiler according to claim 1, characterized in that: A high-temperature fresh air pipe (30) is provided at the lower part of the shell-and-tube gas-to-gas heat exchanger (6), and a steam-water separator (32) is connected to the side of the shell-and-tube gas-to-gas heat exchanger (6) close to the steam pump (26).
4. The energy-saving steam boiler according to claim 1, characterized in that: An aeration pipe (3), a heat pipe (17) and a furnace (18) are provided inside the boiler (4), and the aeration pipe (3) and the heat pipe (17) are both located above the furnace (18); A steam outlet is provided at the upper end of the boiler (4), and the steam outlet is connected to the steam inlet of the steam-water separator (32). The steam outlet of the steam-water separator (32) passes through the tray (5) through a connecting pipe and communicates with the steamer.
5. The energy-saving steam boiler according to claim 1, characterized in that: A fire grate assembly (19) is provided at the lower part of the boiler (4) at the location of the furnace (18), and a fire viewing window (28) is provided at the lower part of the boiler (4) near the steam pump (26).
6. The energy-saving steam boiler according to claim 1, characterized in that: A high-temperature fresh air to fire row (16) is installed at the lower part of the tube-in-tube gas-to-gas heat exchanger (6) away from the tray (5).
7. The energy-saving steam boiler according to claim 1, characterized in that: The bottom end of the fin coil type gas-liquid heat exchanger B (14) is provided with a condensed water outlet (15), and the lower part of one side of the fin coil type gas-liquid heat exchanger A (9) is provided with a normal temperature fresh air inlet (10).
8. The energy-saving steam boiler according to claim 1, characterized in that: An overflow steam inlet (11) is provided between the fin coil type gas-liquid heat exchanger A (9) and the fin coil type gas-liquid heat exchanger B (14).
9. The energy-saving steam boiler according to claim 1, characterized in that: A pump air intake connection pipe (20) is connected to one side of the shell-and-tube air-to-air heat exchanger (6), a high-temperature fresh air connection pipe (21) is installed at the lower part of the shell-and-tube air-to-air heat exchanger (6) close to the pump air intake connection pipe (20), and a breeze switch (22) is installed on the high-temperature fresh air connection pipe (21).