CN214536112U - Energy-saving steam generating device based on alcohol-based fuel - Google Patents
Energy-saving steam generating device based on alcohol-based fuel Download PDFInfo
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- CN214536112U CN214536112U CN202120248556.8U CN202120248556U CN214536112U CN 214536112 U CN214536112 U CN 214536112U CN 202120248556 U CN202120248556 U CN 202120248556U CN 214536112 U CN214536112 U CN 214536112U
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Abstract
The utility model discloses an energy-saving steam generating device based on alcohol-based fuel, which comprises a shell, a water pump, a solenoid valve, a burner and a controller, the right end surface of the shell is provided with a burner bayonet, the burner bayonet is provided with a burner, the left end surface of the shell is provided with a flue gas outlet, the electromagnetic valve is provided with an inlet, a first outlet and a second outlet, a heating water liner is arranged in the shell, the left end face of the heating water container is provided with a preheating water container, the middle part of the right end face of the heating water container is an inner concave face, an exhaust pipeline is arranged at the smoke outlet, an air filter is arranged at the air outlet of the exhaust pipeline, the exhaust duct outside is equipped with sealed water storage cylinder, the utility model has the characteristics of the heat utilization rate that alcohol group fuel burning produced is high, and the liquid boiling produces steam required time weak point, and the heat recovery in the flue gas of emission is high and environmental protection etc.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of methanol fuel steam generation, concretely relates to energy-conserving steam generator based on alcohol group fuel.
[ background of the invention ]
Steam generator, because of its steam volume is big and stable, extensively be used for the mill, the restaurant, the hospital, units such as school, the mode that adopts the heating liquid body to take place steam at present adopts the flame heating mode many, fuel raw materials just need be considered in the flame heating, alcohol group fuel is exactly one kind of fuel raw materials, use alcohol group fuel as steam generation's raw materials, spray steam generator inner water courage side or pipeline through combustor spun flame around, in order to realize making its boiling evaporation steam to the liquid heating in water courage or the pipeline, but two modes are low to the flame utilization ratio that alcohol group fuel produced: when the flame is sprayed to the side surface of the water liner, the side surface of the water liner is flat, the flame can be spread to the periphery when being sprayed to a single side surface of water, but the side surface of the water liner is flat, so the contact area of the flame and the side surface of the water liner is limited, and the part of the flame between every two pipelines is not well utilized by using a pipeline heating mode, so that the heat utilization rate of the flame is low due to the heating of the pipelines, and the boiling time of liquid is increased due to the heating of the water liner; when fuel is combusted, flue gas can be generated, a part of heat energy can exist in the flue gas, the part of flue gas is usually directly discharged in the process of using the steam evaporator at present, the part of energy can be wasted in the discharging process, and the discharged flue gas also has the condition of polluting the environment due to the carbon dioxide in the flue gas.
The above background disclosure is only provided to aid understanding of the inventive concepts and solutions of the present invention, and it does not necessarily pertain to the prior art of this patent application, and it should not be used to assess the novelty and inventive aspects of this application without explicit evidence that such contents are disclosed at the filing date of this patent application.
[ Utility model ] content
An object of the utility model is to provide an energy-conserving steam generator based on alcohol group fuel to the heat utilization rate who solves the burning of current alcohol group fuel and produce is low, and liquid boiling time is long, and the heat recovery utilization rate in the flue gas of emission is low and the not environmental protection scheduling problem of fume emission.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an energy-saving steam generating device based on alcohol-based fuel comprises a shell, a water pump, an electromagnetic valve, a burner and a controller, wherein a burner bayonet is arranged on the right end face of the shell, the burner is arranged at the burner bayonet, a flue gas outlet is arranged on the left end face of the shell, the electromagnetic valve is provided with an inlet, a first outlet and a second outlet, a heating water liner is arranged in the shell, a steam outlet and a first water inlet are formed in the top of the heating water liner, a preheating water liner is arranged on the left end face of the heating water liner, an inner concave surface is formed in the middle of the right end face of the heating water liner, inner concave long grooves are formed in the periphery of the inner concave surface, an exhaust pipeline is arranged at the flue gas outlet, an air filter is arranged at the air outlet of the exhaust pipeline, a sealed water storage cylinder is arranged outside the exhaust pipeline, and a water outlet is formed in the side wall of the middle upper part of the sealed water storage cylinder, the water outlet of the sealed water storage cylinder is provided with a first guide pipe, the first guide pipe is connected with a first water inlet at the top of the heating water container, the side wall of the middle lower part of the sealed water storage cylinder is provided with a fourth water inlet, the fourth water inlet of the sealed water storage cylinder is provided with a fourth guide pipe, the other end of the fourth guide pipe is connected with the outlet of the electromagnetic valve, and the second outlet of the electromagnetic valve is connected with a third guide pipe.
Further, two rings of isolating rings are arranged between the shell and the heating water liner, and smoke holes are formed in the bottom of the isolating ring at the bottom of the heating water liner.
Furthermore, the top surface of the heating water liner is also provided with an air pressure measuring port, the air pressure measuring port is provided with an air pressure pipe, and the other end of the air pressure pipe is provided with a barometer.
Furthermore, a steam guide pipe is arranged at a steam outlet at the top of the heating water liner, and the tail end of the steam guide pipe is connected with a switch valve.
Further, the exhaust duct is the L font, be equipped with a ring flange on the outer wall of the well upper portion and the well lower part of exhaust duct's long end respectively, sealed water storage cylinder establishes on the ring flange of the well upper portion and the well lower part of exhaust duct long end, the top surface of sealed water storage cylinder is equipped with the retaining ring, the bottom of sealed water storage cylinder is equipped with sealed ring flange, the top surface laminating of the bottom of sealed water storage cylinder top surface retaining ring and the ring flange of the well upper portion of exhaust duct long end, the bottom surface of the sealed ring flange of sealed water storage cylinder bottom surface and the top surface laminating of the ring flange of lower part in the exhaust duct.
Furthermore, a circle of heat-resistant rubber ring is arranged between the check ring on the top surface of the sealed water storage cylinder and the flange plate on the middle upper part of the long end of the exhaust pipeline, and a circle of heat-resistant rubber ring is also arranged between the sealed flange plate at the bottom of the sealed water storage cylinder and the flange plate on the middle lower part of the long end of the exhaust pipeline.
Furthermore, a second water inlet is formed in the left end face of the heating water container, a preheating water container water outlet is formed in the middle right side of the top of the preheating water container, a second guide pipe is arranged at the water outlet of the preheating water container, and the other end of the second guide pipe is connected with a second water inlet of the heating water container.
Furthermore, a plurality of threaded sleeves are arranged on the right end face of the preheating water container, bolts are arranged in the threaded sleeves, a plurality of round holes are formed in the right end face of the outer shell, the bolts penetrate through the round holes in the right end face of the outer shell to be matched with the threaded sleeves in the right end face of the preheating water container, a third water inlet is formed in the lower portion of the threaded sleeves of the preheating water container, and a third guide pipe penetrates through the round holes in the left end face of the outer shell to be connected with the third water inlet.
Furthermore, a guide pipe is arranged at the inlet of the electromagnetic valve, and the other end of the guide pipe is connected with a water pump.
Further, the water pump and the electromagnetic valve are connected with the controller.
The utility model discloses the beneficial effect who reaches is:
(1) the device modifies the surface of the heating water liner sprayed by the flame of the alcohol-based fuel, and the heating surface of the heating water liner is designed into an arc surface shape, so that the contact area with the flame is increased, the boiling speed of the liquid is accelerated, and the heat utilization rate of the flame generated by the alcohol-based fuel is also improved.
(2) The device is characterized in that the wall of the heating water liner has heat in the boiling process of liquid in the heating water liner, a preheating water liner is additionally arranged on the side part of the heating water liner, the preheating water liner is attached to the side surface of the heating water liner through the side surface of the preheating water liner to absorb a part of heat energy, so that the temperature of the liquid in the preheating water liner is raised to a certain extent, the water in the preheating water liner can be rapidly heated and the boiling time can be shortened when being added into the water liner, the interval time for generating steam is shortened, and the utilization rate of the heat energy on the wall of the heating water liner is improved; a sealed water storage cylinder is additionally arranged outside the flue gas pipeline and used as standby water, when alcohol-based fuel burns to generate flue gas with heat through the flue gas pipeline, certain heat energy can be left on the inner wall of the flue gas pipeline, liquid in the sealed water storage cylinder absorbs the heat energy on the inner wall of the flue gas pipeline, the liquid in the sealed water storage cylinder can be heated up, the water in the sealed water storage cylinder can be rapidly heated up when being added into a water container, the boiling time is shortened, and the recovery rate of the heat energy in the discharged flue gas is improved.
(3) The smoke outlet of the smoke pipeline is provided with an air filter, so that the pollution to the air can be reduced, and the smoke pipeline is environment-friendly.
[ description of the drawings ]
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a sectional view of a front view of the present invention;
FIG. 2 is a partial schematic view of FIG. 1A;
FIG. 3 is a partial schematic view at FIG. 1B;
fig. 4 is a right side view of the water bladder of the present invention.
1. A water pump; 2. an electromagnetic valve; 3. a fourth conduit; 4. sealing the water storage cylinder; 4-1, a check ring; 4-2, sealing a flange plate; 5. a flue gas duct; 5-1, a flange plate; 6. an air filter; 7. a first conduit; 8. a second conduit; 9. a barometer; 10. a steam conduit; 11. opening and closing the valve; 12. heating the water liner; 13. a combustion engine; 14. a fixing leg; 15. an isolating ring; 16. a housing; 17. preheating the water tank; 18. a third conduit; 19. a controller; 20. a conduit; 21. a heat-resistant rubber ring.
[ detailed description ] embodiments
The following is a detailed description of specific embodiments.
The present invention will be described in further detail with reference to the following embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
As shown in fig. 1-4, an energy-saving steam generating device based on alcohol-based fuel comprises a shell 16, a water pump 1, an electromagnetic valve 2, a burner 13 and a controller 19, wherein the shell 16 is a horizontal cylindrical hollow type, a burner bayonet is arranged on the right end face of the shell 16, the burner 13 is arranged at the burner bayonet, a flue gas outlet is arranged on the left end face of the shell 16, the electromagnetic valve 19 is a three-position three-way electromagnetic valve, the electromagnetic valve 19 has an inlet, a first outlet and a second outlet, a heating water liner 12 is arranged in the shell 16, a two-ring isolating ring 15 is arranged between the shell 16 and the heating water liner 12, and a flue gas hole is formed in the bottom of the isolating ring 15 at the bottom of the heating water liner 12.
The top of the heating water container 12 is provided with a steam outlet and a first water inlet, the steam outlet at the top of the heating water container 12 is provided with a steam guide pipe 10, the tail end of the steam guide pipe 10 is connected with a switch valve 11 which is not limited to two, the top surface of the heating water container 12 is also provided with an air pressure measuring port, the air pressure measuring port is provided with an air pressure pipe, the other end of the air pressure pipe is provided with an air pressure gauge 9, the left end surface of the heating water container 12 is provided with a preheating water container 17, the middle part of the right end surface of the heating water container 12 is an inner concave surface, the periphery of the inner concave surface is provided with 6 inner concave long grooves, the smoke outlet of the shell 16 is provided with an exhaust pipeline 5, the air outlet of the exhaust pipeline 5 is provided with an air filter 6, the outside of the exhaust pipeline 5 is provided with a sealing water storage cylinder 4, the exhaust pipeline 5 is L-shaped, and the middle upper part and middle lower part of the long end of the exhaust pipeline 5 are respectively provided with a flange 5-1, the diameter of a flange 5-1 at the middle lower part of the long end of the exhaust pipeline 5 is slightly larger than that of a flange 5-1 at the middle upper part, a sealing water storage cylinder 4 is arranged on the flange 5-1 at the middle upper part and the middle lower part of the long end of the exhaust pipeline 5, a check ring 4-1 is arranged on the top surface of the sealing water storage cylinder 4, a sealing flange 4-2 is arranged at the bottom of the sealing water storage cylinder 4, the bottom of the check ring 4-1 at the top surface of the sealing water storage cylinder 4 is attached to the top surface of the flange 5-1 at the middle upper part of the long end of the exhaust pipeline 5, and the bottom surface of the sealing flange 4-2 at the bottom surface of the sealing water storage cylinder 4 is attached to the top surface of the flange at the middle lower part of the exhaust pipeline 5. A circle of heat-resistant rubber ring 21 is arranged between a retainer ring 4-1 on the top surface of the sealed water storage cylinder 4 and a flange 5-1 on the middle upper part of the long end of the exhaust pipeline 5, a circle of heat-resistant rubber ring 21 is also arranged between a sealing flange 4-2 on the bottom of the sealed water storage cylinder 4 and a flange 5-1 on the middle lower part of the long end of the exhaust pipeline 5, and the heat-resistant rubber ring is made of fluorine rubber, full fluorine ether rubber and the like.
A second water inlet is formed in the left end face of the heating water container 12, a preheating water container water outlet is formed in the middle right side of the top of the preheating water container 12, a second guide pipe 8 is arranged at the preheating water container water outlet, and the other end of the second guide pipe 8 is connected with a second water inlet of the heating water container 12.
As shown in fig. 1, a plurality of screw sleeves are arranged on the right end face of the preheating water container 12, bolts are arranged in the screw sleeves, a plurality of round holes are formed in the right end face of the outer shell 16, the bolts penetrate through the round holes in the right end face of the outer shell 16 to be matched with the screw sleeves in the right end face of the preheating water container 17, a third water inlet is formed below the screw sleeves of the preheating water container 17, and a third guide pipe 18 penetrates through the round holes in the left end face of the outer shell 16 to be connected with the third water inlet.
The water outlet has been seted up on the well upper portion lateral wall of sealed water storage cylinder 4, the water outlet department of sealed water storage cylinder 4 is equipped with first pipe 7, first pipe 7 links to each other with the first water inlet at heating water container 12 top, the fourth water inlet has been seted up on the well lower part lateral wall of sealed water storage cylinder 4, the fourth water inlet department of sealed water storage cylinder 4 is equipped with fourth pipe 3, the export of solenoid valve 19 is connected to the other end of fourth pipe 3, the second exit linkage of solenoid valve 19 has third pipe 18, the entrance of solenoid valve 2 is equipped with pipe 19, the other end of pipe 19 is connected with water pump 1. The water pump 1 and the electromagnetic valve 2 are connected with a controller 19 through a conventional circuit. An oxygen supply hole (not shown) is opened at the right end surface of the housing 16.
The lateral wall of the heating water container 12 of the device is also provided with a water level gauge, the water level gauge is connected with the lateral wall of the heating water container 12, a hole through which the water level gauge penetrates is formed in the lateral wall of the shell 16, the water level gauge penetrates through the hole in the lateral wall of the shell 12 and then is fixed on the surface of the shell 12, an operator can observe the water level in the heating water container 12, the structure is the prior art, and the water level gauge structure is not embodied in the drawing of the specification on the premise that the technical personnel in the field can understand the structure.
The working process is as follows: the combustor 13 uses the burning of alcohol group fuel to obtain flame, and flame sprays the right-hand member face of heating water courage 12, because the right-hand member face of heating water courage 12 is the arcwall face, so the area of contact grow of flame and the right-hand member face of heating water courage 12 has accelerated the programming rate of the liquid in the heating water courage 12, and when the liquid boiling in the heating water courage 12, the steam that produces goes out along steam conduit 10, and control switch valve 11's gas output has just obtained the steam of demand. When the liquid in the heating water container 12 boils, the side wall of the heating water container 12 has heat, the heat can be conducted to the preheating water container 17, the liquid in the preheating water container 17 can absorb the heat to heat itself, the opening and closing action of the electromagnetic valve 2 is controlled by the controller 19, when the water pump 1 works, new liquid enters the preheating water container 17, the liquid in the preheating water container 17 is in interference, the liquid which just enters the preheating water container 17 can push the liquid which is heated in the preheating water container 17 to flow into the heating water container 17 through the second conduit 8, and therefore the temperature control and water adding are achieved. The arrow in fig. 1 indicates the flowing direction of the flue gas generated by combustion, when the flue gas flows, the flue gas can be discharged through the flue gas pipeline 5, heat energy can exist in the flue gas, when the flue gas passes through the flue gas pipeline 5, the heat energy can be conducted to the inner wall of the flue gas pipeline 5, the liquid in the sealed water storage cylinder 4 can absorb the part of the heat energy to raise the temperature of the sealed water storage cylinder 4, when the liquid in the sealed water storage cylinder 4 is needed, the opening and closing of the electromagnetic valve 2 are controlled through the controller 19, the controller 19 drives the water pump 1 to supply water to the sealed water storage cylinder 4 through the fourth conduit 3, the liquid in the sealed water storage cylinder 4 is subjected to an upward thrust of the liquid entering the sealed water storage cylinder 4, the original liquid in the sealed water storage cylinder 4 flows into the heating water container 12 through the first conduit 7, standby water replenishing is realized, and main water replenishing is also performed through the preheating water container 17. The flue gas is discharged through an air filter 6 at the flue gas outlet of the flue gas duct 5, and the air filter 6 comprises an adsorption filter, a carbon dioxide diffuser and the like.
The utility model improves the surface of the heating water liner sprayed by the flame of the alcohol-based fuel, and designs the heating surface of the heating water liner into an arc surface shape, thereby increasing the contact area with the flame, accelerating the boiling speed of the liquid and simultaneously improving the heat energy utilization rate of the flame generated by the alcohol-based fuel; the device is characterized in that the wall of the heating water liner has heat in the boiling process of liquid in the heating water liner, a preheating water liner is additionally arranged on the side part of the heating water liner, the preheating water liner is attached to the side surface of the heating water liner through the side surface of the preheating water liner to absorb a part of heat energy, so that the temperature of the liquid in the preheating water liner is raised to a certain extent, the water in the preheating water liner can be rapidly heated and the boiling time can be shortened when being added into the water liner, the interval time for generating steam is shortened, and the utilization rate of the heat energy on the wall of the heating water liner is improved; the sealed water storage cylinder is additionally arranged outside the flue gas pipeline and used for standby water addition, when the flue gas with heat generated by combustion of the alcohol-based fuel passes through the flue gas pipeline, certain heat energy can be left on the inner wall of the flue gas pipeline, liquid in the sealed water storage cylinder absorbs the heat energy on the inner wall of the flue gas pipeline, the liquid in the sealed water storage cylinder can be heated, the water in the sealed water storage cylinder can be quickly heated when added into the water container, the boiling time is shortened, and the recovery utilization rate of the heat energy in the discharged flue gas is improved; the smoke outlet of the smoke pipeline is provided with an air filter, so that the pollution to the air can be reduced, and the smoke pipeline is environment-friendly.
The above description should not be taken as limiting the invention to the specific embodiments, but rather, as will be apparent to those skilled in the art, numerous modifications and variations are possible without departing from the inventive concepts herein disclosed, and it is intended to cover all modifications and variations of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an energy-conserving steam generator based on alcohol group fuel, includes the shell, the water pump, the solenoid valve, combustor and controller, the right-hand member face of shell is equipped with the combustor bayonet socket, combustor bayonet socket department is equipped with the combustor, the left end face of shell is equipped with the exhanst gas outlet, the solenoid valve has the entry, first export and second export, its characterized in that: a heating water container is arranged in the shell, a steam outlet and a first water inlet are formed in the top of the heating water container, a preheating water container is arranged on the left end face of the heating water container, an inner concave face is formed in the middle of the right end face of the heating water container, inner concave long grooves are formed in the periphery of the inner concave face, an exhaust pipeline is arranged at a smoke outlet, an air filter is arranged at an air outlet of the exhaust pipeline, a sealed water storage cylinder is arranged outside the exhaust pipeline, a water outlet is formed in the side wall of the middle upper portion of the sealed water storage cylinder, a first guide pipe is arranged at the water outlet of the sealed water storage cylinder and connected with a first water inlet in the top of the heating water container, a fourth water inlet is formed in the side wall of the middle lower portion of the sealed water storage cylinder, a fourth guide pipe is arranged at the fourth water inlet of the sealed water storage cylinder, and the other end of the fourth guide pipe is connected with an outlet of the electromagnetic valve, and a second outlet of the electromagnetic valve is connected with a third conduit.
2. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: two rings of isolating rings are arranged between the shell and the heating water liner, and a smoke hole is formed in the bottom of the isolating ring at the bottom of the heating water liner.
3. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: the top surface of the heating water liner is also provided with an air pressure measuring port, the air pressure measuring port is provided with an air pressure pipe, and the other end of the air pressure pipe is provided with a barometer.
4. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: and a steam outlet at the top of the heating water liner is provided with a steam guide pipe, and the tail end of the steam guide pipe is connected with a switch valve.
5. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: the exhaust duct is the L font, be equipped with a ring flange on the outer wall of the well upper portion and the well lower part of exhaust duct's long end respectively, sealed water storage cylinder establishes on the ring flange of the well upper portion and the well lower part of exhaust duct long end, sealed water storage cylinder's top surface is equipped with the retaining ring, sealed water storage cylinder's bottom is equipped with sealed ring flange, the top surface laminating of the ring flange of the bottom of sealed water storage cylinder top surface retaining ring and the well upper portion of exhaust duct long end, the bottom surface of the sealed ring flange of sealed water storage cylinder bottom surface and the top surface laminating of the ring flange of lower part in the exhaust duct.
6. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 5, wherein: a circle of heat-resistant rubber ring is arranged between the check ring on the top surface of the sealed water storage cylinder and the flange plate on the middle upper part of the long end of the exhaust pipeline, and a circle of heat-resistant rubber ring is also arranged between the sealed flange plate at the bottom of the sealed water storage cylinder and the flange plate on the middle lower part of the long end of the exhaust pipeline.
7. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: the left end face of the heating water container is provided with a second water inlet, the middle right side of the top of the preheating water container is provided with a preheating water container water outlet, a second guide pipe is arranged at the water outlet of the preheating water container, and the other end of the second guide pipe is connected with a second water inlet of the heating water container.
8. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: the preheating water tank is characterized in that a plurality of threaded sleeves are arranged on the right end face of the preheating water tank, bolts are arranged in the threaded sleeves, a plurality of round holes are formed in the right end face of the outer shell, the bolts penetrate through the round holes in the right end face of the outer shell to be matched with the threaded sleeves in the right end face of the preheating water tank, a third water inlet is formed in the lower portion of the threaded sleeves of the preheating water tank, and a third guide pipe penetrates through the round holes in the left end face of the outer shell to be connected with the third water inlet.
9. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: a guide pipe is arranged at the inlet of the electromagnetic valve, and the other end of the guide pipe is connected with a water pump.
10. The energy-saving steam generating device based on the alcohol-based fuel as claimed in claim 1, characterized in that: the water pump and the electromagnetic valve are connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120248556.8U CN214536112U (en) | 2021-01-27 | 2021-01-27 | Energy-saving steam generating device based on alcohol-based fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120248556.8U CN214536112U (en) | 2021-01-27 | 2021-01-27 | Energy-saving steam generating device based on alcohol-based fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214536112U true CN214536112U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120248556.8U Active CN214536112U (en) | 2021-01-27 | 2021-01-27 | Energy-saving steam generating device based on alcohol-based fuel |
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| Country | Link |
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| CN (1) | CN214536112U (en) |
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2021
- 2021-01-27 CN CN202120248556.8U patent/CN214536112U/en active Active
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