Electric heating steam generator

Abstract

The utility model discloses an electric heating steam generator, and belongs to the technical field of evaporator equipment. An electric heating steam generator comprises a box body, a heat preservation cavity is formed in the box body, a furnace tank and a water tank are arranged in the heat preservation cavity, electric heating structures are arranged in the water tank and the furnace tank, a water inlet of the water tank is connected with a heat exchange structure, water in the water tank is conveyed into the furnace tank through a water pump, and the heat exchange structure comprises a heat exchange pipe. An inlet of the heat exchange pipe is connected with a water inlet pipe, and an outlet of the heat exchange pipe is connected with a water inlet of the water tank through an electromagnetic valve. According to the steam generator, through the arrangement of the heat preservation cavity, on one hand, heat generated by the furnace tank can be prevented from leaking outwards, then the temperature in the furnace tank is more stable, and on the other hand, the heat exchange structure can be used for supplementing water and preheating the water subsequently, so that the problem that heat generated by the steam generator in the prior art cannot be fully utilized is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporator equipment, in particular to an electric heating steam generator. Background Art

[0002] A steam generator is a mechanical device that uses the heat energy of fuel or other heat sources to heat water into hot water or steam. During the heating process of the steam generators on the market at present, the inner tank will emit a certain amount of heat into the air, and this part of the heat is difficult to be effectively utilized, resulting in waste of heat energy. At the same time, the steam generators in the prior art take a long time to heat the initial water in the cold machine state, so improvements are needed. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems that the heat generated by the steam generator in the prior art cannot be fully utilized and the cold machine heating takes a long time, and an electric heating steam generator is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An electric heating steam generator includes a box body, a heat preservation cavity is arranged in the box body, a furnace tank and a water tank are arranged in the heat preservation cavity, electric heating structures are arranged in both the water tank and the furnace tank, a heat exchange structure is connected to the water inlet of the water tank, and the water in the water tank is conveyed into the furnace tank through a water pump.

[0006] Preferably, the heat exchange structure includes a heat exchange tube, a water inlet pipe is connected to the inlet of the heat exchange tube, and the outlet of the heat exchange tube is connected to the water inlet of the water tank through an electromagnetic valve.

[0007] Preferably, the water outlet of the water tank is connected to one end of a first connecting pipe, the other end of the first connecting pipe is connected to the inlet of the water pump, the outlet of the water pump is connected to one end of a second connecting pipe, and the other end of the second connecting pipe is connected to the water inlet of the furnace tank.

[0008] Preferably, the electric heating structure is a heating rod.

[0009] Preferably, a steam outlet pipe, a pressure gauge and a pressure relief pipe are arranged at the top of the furnace tank, and a safety valve is arranged on the pressure relief pipe.

[0010] Preferably, a sewage discharge pipe is arranged at the bottom of the furnace tank, and a valve is arranged on the sewage discharge pipe.

[0011] Compared with the prior art, the utility model provides an electric heating steam generator, which has the following beneficial effects.

[0012] 1. In this utility model, through the provided heat preservation cavity, on the one hand, it can prevent the heat generated by the furnace tank from leaking out, thereby making the temperature inside the furnace tank more stable. On the other hand, it can use the heat exchange structure to preheat the water during subsequent water replenishment, thus solving the problem that the heat generated by the steam generator in the prior art cannot be fully utilized.

[0013] 2. In this utility model, by arranging electric heating structures in both the furnace tank and the water tank, when starting the cold machine, a part of water can be input into the furnace tank for heating, and a part of water is left in the water tank for heating. When the water in the water tank is heated to a certain extent, it is then input into the furnace tank, mixed with the water in the furnace tank and continuously heated to generate steam. Compared with the existing equipment, this device adopts two groups of electric heating structures, which can shorten the heating time of the cold machine, thus solving the problem that the cold machine of the steam generator in the prior art takes a long time to heat.

[0014] 3. In this utility model, the electric heating structure on the water tank can not only assist in heating during the cold machine heating, but also heat the water during the subsequent water replenishment process. As a result, the temperature difference between the replenished water and the water already in the furnace tank is not large, so that the temperature in the furnace tank will not change significantly, thereby achieving a relatively stable output of steam.

[0015] Other advantages, objectives and features of this utility model will be described to some extent in the subsequent specification; and to some extent, based on the study of the following text, it will be obvious to those skilled in the art; or, it can be taught from the practice of this utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 It is a schematic sectional structure diagram of this utility model.

[0018] Figure 3 It is a schematic diagram of the partially disassembled structure of this utility model.

[0019] In the figure:

[0020] 1. Box body; 2. Pressure relief pipe; 3. Safety valve; 4. Steam outlet pipe; 5. Pressure gauge; 6. Water inlet pipe; 7. Drain pipe; 8. Furnace tank; 9. Heat exchange pipe; 10. Solenoid valve; 11. Water tank; 12. Heating rod; 13. First connecting pipe; 14. Water pump; 15. Heat preservation cavity; 16. Second connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Referring to Figures 1-3 , an electric heating steam generator includes a box body 1, a heat preservation cavity 15 is arranged in the box body 1, a furnace tank 8 and a water tank 11 are arranged in the heat preservation cavity 15, electric heating structures are arranged in both the water tank 11 and the furnace tank 8, the water inlet of the water tank 11 is connected with a heat exchange structure, and the water in the water tank 11 is conveyed into the furnace tank 8 through a water pump 14.

[0023] In a specific embodiment of the present invention, through the provided heat preservation cavity 15, it can be used to prevent the heat generated outside the furnace tank 8 from dissipating, for externally insulating the furnace tank 8, so that the internal temperature is not easily lowered, thereby better generating steam; at the same time, the heat retained in the heat preservation cavity 15 can be used in combination with the heat exchange structure. On the one hand, the heat exchange structure can be used for heat exchange to preheat the subsequent water, and on the other hand, during heat exchange, a part of the heat can be taken away to prevent the temperature in the heat preservation cavity 15 from being too high; by arranging an electric heating structure in the water tank 11, on the one hand, it can play an auxiliary heating role during cold machine heating, reducing the cold machine start-up heating time, and on the other hand, during the water replenishment process, the water can be heated and then replenished into the furnace tank 8, so that the water temperature in the furnace tank 8 will not change greatly due to the addition of new water, thereby realizing the stable output of steam.

[0024] The heat exchange structure includes a heat exchange tube 9, the inlet of the heat exchange tube 9 is connected with a water inlet pipe 6, the outlet of the heat exchange tube 9 is connected with the water inlet of the water tank 11 through an electromagnetic valve 10. When in use, the heat exchange tube 9 can be used to collect the heat in the heat preservation cavity 15 so that the water can absorb a part of the heat, preventing the temperature in the heat preservation cavity 15 from being too high. At the same time, the water that has absorbed heat can be used as the subsequent water replenishment, reducing the water heating time during subsequent water replenishment.

[0025] The water outlet of the water tank 11 is connected with one end of a first connecting pipe 13, the other end of the first connecting pipe 13 is connected with the inlet of the water pump 14, the outlet of the water pump 14 is connected with one end of a second connecting pipe 16, and the other end of the second connecting pipe 16 is connected with the water inlet of the furnace tank 8. When in use, by using the water pump 14, the water in the water tank 11 can be pumped into the furnace tank 8 for water conveyance and replenishment.

[0026] The electric heating structure is a heating rod 12, the heating rod 12 is an electric heating rod, using existing equipment, when in use, it is energized, so that the rod body on the heating rod 12 generates heat to heat the water, which is a conventional existing setting.

[0027] A steam outlet pipe 4, a pressure gauge 5 and a pressure relief pipe 2 are provided at the top of the furnace tank 8, and a safety valve 3 is provided on the pressure relief pipe 2; the steam outlet pipe 4 is provided for outputting the generated steam, which is a conventional existing setting; the pressure gauge 5 is provided to monitor the pressure in the furnace tank 8, which is a conventional existing setting; the pressure relief pipe 2 and the safety valve 3 are provided to automatically relieve pressure when the pressure in the furnace tank 8 is too high, which is a conventional existing setting.

[0028] A blowdown pipe 7 is provided at the bottom of the furnace tank 8, and a valve is provided on the blowdown pipe 7. The blowdown pipe 7 is provided for blowdown, which is a conventional existing setting.

[0029] Working process: Open the solenoid valve 10, water enters from the water inlet pipe 6, passes through the heat exchange pipe 9 and then enters the water tank 11. Then use the water pump 14 to pump the water in the water tank 11 into the furnace tank 8. Note that when the cold machine starts heating, the water input into the furnace tank 8 is half of the preset standard water volume, and the other half of the water remains in the water tank 11. Then start the heating rod 12 to heat the water in the water tank 11 and the water in the furnace tank 8 respectively. When the water in the water tank 11 is heated, use the water pump 14 to transport this part of hot water into the furnace tank 8, mix it with the water in the furnace tank 8, and continuously heat to generate steam. The steam is discharged from the steam outlet pipe 4. At this time, the heating rod 12 in the water tank 11 stops heating; then after the furnace tank 8 runs continuously for a period of time, heat will also be generated on its outer surface and then retained in the heat preservation cavity 15 and is not easy to dissipate. Then close the solenoid valve 10 and inject water into the heat exchange pipe 9 for heat exchange to prevent the temperature in the heat preservation cavity 15 from being too high; before replenishing water, send the water in the heat exchange pipe 9 into the water tank 11 and heat it. Since this part of water is pre-heated water through heat exchange, the heating efficiency is relatively high when heating this part of water. Then use the heated water as the water replenishment source to avoid the problem that the steam output is unstable due to the large temperature difference between the water replenished into the furnace tank 8 and the original water.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0031] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0032] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An electric heating steam generator, comprising a housing (1), characterized in that: The box body (1) is provided with a heat preservation chamber (15), and a furnace pot (8) and a water tank (11) are provided in the heat preservation chamber (15). Both the water tank (11) and the furnace pot (8) are provided with electric heating structures. The water inlet of the water tank (11) is connected to a heat exchange structure, and the water in the water tank (11) is transported to the furnace pot (8) by a water pump (14).

2. An electrically heated steam generator according to claim 1, characterized in that: The heat exchange structure comprises a heat exchange tube (9), the inlet of the heat exchange tube (9) is connected to a water inlet pipe (6), and the outlet of the heat exchange tube (9) is connected to a water inlet of a water tank (11) via a solenoid valve (10).

3. The electric heating steam generator according to claim 1, characterized in that: The water outlet of the water tank (11) is connected to one end of a first connecting pipe (13), the other end of the first connecting pipe (13) is connected to an inlet of a water pump (14), the outlet of the water pump (14) is connected to one end of a second connecting pipe (16), the other end of the second connecting pipe (16) is connected to a water inlet of the furnace tank (8).

4. The electric heating steam generator according to claim 1, characterized in that: The electric heating structure is a heating rod (12).

5. The electrically heated steam generator according to claim 1, characterized in that: The top of the furnace tank (8) is provided with a steam outlet pipe (4), a pressure gauge (5) and a pressure relief pipe (2), and the pressure relief pipe (2) is provided with a safety valve (3).

6. The electrically heated steam generator according to claim 1, characterized in that: A sewage discharge pipe (7) is provided at the bottom of the furnace tank (8), and a valve is provided on the sewage discharge pipe (7).

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