Steam heater and steam generator

Abstract

The utility model relates to the field of steam generating equipment, in particular to a steam heater and a steam generator, which comprise a shell, an inner container arranged on the inner side of the shell and a heating piece arranged between the shell and the inner container, a first opening is formed in the top of the inner container, and a second opening is formed in the bottom of the inner container. The heating piece comprises a heating body wrapping the outer side of the inner container, and the inner container is arranged to be a heat conduction inner container. According to the utility model, generated steam can be dried through the steam heater, so that the existing problems are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of steam generating equipment, and in particular to a steam heater and a steam generator. Background Technology

[0002] The quality level of medical steam directly affects the sterilization effect of medical devices. There are four main indicators representing the steam quality level (steam condensate quality, dryness, non-condensable gases, and superheat). Among them, dryness directly affects the efficiency and safety of the steam system. Dry steam can better utilize latent heat, improve thermal efficiency, and reduce energy waste. Therefore, improving the dryness of steam is a key aspect.

[0003] Currently, quality control of steam dryness mainly involves controlling the heat exchange efficiency of the steam generator and controlling the water-vapor separation in the steam exhaust stage. The applicant proposes a steam heater and steam generator that can reduce the requirements for heat exchange efficiency and water-vapor separation in the steam heater. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a steam heater and a steam generator, which can dry the generated steam through the steam heater, effectively solving the existing problems.

[0005] To address the aforementioned problems, this utility model provides a steam heater and a steam generator, comprising a shell, an inner liner disposed inside the shell, and a heating element disposed between the shell and the inner liner. The inner liner has a flow guiding spiral on its inner side, a first opening at the top, and a second opening at the bottom. The heating element includes a heating body covering the outer side of the inner liner, and the inner liner is configured as a heat-conducting inner liner.

[0006] Furthermore, the heating element covers the flow guide spiral.

[0007] Furthermore, the heating element includes a heating cylinder sleeved on the outside of the inner liner, and the surface of the heating cylinder is provided with mounting grooves spaced apart along its circumference; the heating element also includes an electric heating part installed in the mounting groove.

[0008] Furthermore, the heating element is configured as a heating wire.

[0009] Furthermore, the heating cylinder includes two semi-cylindrical sections that can be joined together, and the cross-section of the semi-cylindrical sections is semi-annular.

[0010] Furthermore, the heating cylinder is covered with an insulation layer on its outer side, and the insulation layer covers the heating element.

[0011] Furthermore, the insulation layer is configured as a flexible insulation layer.

[0012] This utility model also provides a steam generator, including the steam heater as described above. The steam generator further includes: a raw water booster pump; a preheater connected to the raw water booster pump; an evaporator connected to the preheater, capable of heating and evaporating the hot water provided by the preheater, the top of the evaporator being provided with a wire mesh filter, the first inlet of the steam heater being connected to the wire mesh filter; and a buffer tank connected to the second inlet of the steam heater, the buffer tank being connected to a steam output pipe.

[0013] The beneficial effect of this invention is that it can dry the generated steam through a steam heater, effectively solving the existing problems. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of a steam heater according to an embodiment of the present invention after removing the insulation layer, the heating element, and part of the outer shell.

[0016] Figure 2 for Figure 1 The illustrated embodiment is shown in a top cross-sectional view.

[0017] Figure 3 for Figure 1 A schematic diagram of a partial structure on the inner side of the inner liner in the illustrated embodiment.

[0018] Figure 4 This is a schematic diagram of the steam generator in one embodiment of the present invention.

[0019] The components are: 1. Outer shell; 2. Inner liner; 3. Guide spiral; 4. First inlet; 5. Second inlet; 6. Heating cylinder; 7. Mounting groove; 8. Electric heating element; 9. Half cylinder; 10. Insulation layer; 11. Raw water booster pump; 12. Preheater; 13. Evaporator; 1301. Wire mesh filter element; 14. Buffer tank. Detailed Implementation

[0020] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0021] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0022] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] In this utility model, such as Figures 1 to 4As shown, a steam heater and steam generator are provided, including a shell 1, an inner liner 2 disposed inside the shell 1, and a heating element disposed between the shell 1 and the inner liner 2. The inner liner 2 is provided with a flow guiding spiral 3 on its inner side, and a first opening 4 is formed at the top and a second opening 5 is formed at the bottom. The heating element includes a heating body covering the outside of the inner liner 2, and the inner liner 2 is configured as a heat-conducting inner liner 2.

[0026] In use, the steam heater of this invention connects its first inlet 4 to the outlet of a steam generator. Steam generated by the generator enters the inner liner 2 and is guided by a high-speed spiral 3. Due to inertia, the steam adheres tightly to the inner wall of the liner 2. The heating element heats the steam by heating the liner 2, increasing its superheat. Increased superheat allows the steam to carry more heat, helping to reduce the amount of condensate generated during cooling and liquefaction in pure steam pipeline transport. Simultaneously, some water droplets carried in the steam adhere to the inner wall of the liner 2 due to inertia. Heating by the heating element promotes evaporation of these droplets, further improving the dryness of the steam.

[0027] In a preferred embodiment, a further optimization of the structure of this invention is that the heating element covers the flow-guiding spiral 3. This increases the coverage area of ​​the heating element and further improves the heating effect.

[0028] In a preferred embodiment, the structure of the present invention further specifically includes a heating cylinder 6 sleeved on the outside of the inner liner 2, and mounting grooves 7 are provided circumferentially on the surface of the heating cylinder 6; the heating element also includes an electric heating part 8 installed in the mounting groove 7.

[0029] In a preferred embodiment, the heating cylinder 6 can be made of aluminum or copper with high thermal conductivity so that the inner liner 2 can be heated evenly.

[0030] In a preferred embodiment, more specifically regarding the structure of this utility model, the heating element 8 is configured as a heating wire.

[0031] In a preferred embodiment, more specifically regarding the structure of this utility model, the heating cylinder 6 includes two semi-cylindrical portions 9 that can be joined together, and the cross-section of the semi-cylindrical portions 9 is semi-annular.

[0032] This makes it easier to assemble and disassemble the semi-cylinder 9 on the outside of the inner liner 2.

[0033] In a preferred embodiment, specifically regarding the structure of this invention, the heating cylinder 6 is covered with a heat insulation layer 10, which covers the heating element 8. By providing the heat insulation layer 10, heat loss from the heating element 8 can be reduced, thereby improving the heat utilization efficiency of the heating element 8.

[0034] In the illustrated embodiment, the insulation layer 10 can also cover and fix the two semi-cylindrical portions 9, thereby realizing the assembly of the heating cylinder 6 and the fixation of the heating tube. The assembly method of the semi-cylindrical portions 9 is not limited to this method. In optional embodiments, the semi-cylindrical portions 9 can also be connected and fixed in other ways, such as the semi-cylindrical portions 9 are provided with ear plates respectively, and the ear plates are connected by bolts, or the semi-cylindrical portions 9 are fixed by clamps.

[0035] In a preferred embodiment, more specifically, regarding the structure of this utility model, the insulation layer 10 is configured as a flexible insulation layer 10.

[0036] Specifically, the insulation layer 10 can be made of composite foam insulation cotton, which makes it easy to wrap the insulation layer 10 around the outside of the heating cylinder 6.

[0037] This utility model also provides a steam generator, including the steam heater as described above. The steam generator further includes: a raw water booster pump 11; a preheater 12 connected to the raw water booster pump 11; an evaporator 13 connected to the preheater 12, capable of heating and evaporating the hot water provided by the preheater 12, the top of the evaporator 13 is provided with a wire mesh filter 1301, the first port 4 of the steam heater is connected to the wire mesh filter 1301; and a buffer tank 14 connected to the second port 5 of the steam heater, the buffer tank 14 being connected to a steam output pipe.

[0038] In this way, when steam processing is carried out, pure water is pumped into the preheater 12 through the raw water booster pump 11. The water preheated in the preheater 12 enters the evaporator 13 to generate steam. The generated steam passes through the wire mesh filter 1301 to reduce the water content in the steam, so that the water content in the steam discharged from the steam heater is reduced. The steam discharged from the steam heater is further dried by the action of the steam heater and then enters the buffer tank 14. The steam is discharged from the buffer tank 14.

[0039] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0040] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A steam heater, characterized in that, The device includes an outer shell, an inner liner disposed inside the outer shell, and a heating element disposed between the outer shell and the inner liner. The inner liner has a guide spiral on its inner side, and a first opening is formed at the top and a second opening is formed at the bottom of the inner liner. The heating element includes a heating body covering the outside of the inner liner, and the inner liner is configured as a heat-conducting inner liner.

2. The steam heater according to claim 1, characterized in that, The heating element covers the flow guide spiral.

3. The steam heater according to claim 1 or 2, characterized in that, The heating element includes a heating cylinder sleeved on the outside of the inner liner, and the surface of the heating cylinder is provided with mounting grooves spaced apart along its circumference. The heating element also includes an electric heating section installed in the mounting slot.

4. The steam heater according to claim 3, characterized in that, The heating element is configured as a heating wire.

5. The steam heater according to claim 3, characterized in that, The heating cylinder includes two semi-cylindrical sections that can be joined together, and the cross-section of the semi-cylindrical sections is semi-annular.

6. The steam heater according to any one of claims 3 to 5, characterized in that, The heating cylinder is covered with an insulation layer on its outer side, and the insulation layer covers the heating element.

7. The steam heater according to claim 6, characterized in that, The insulation layer is configured as a flexible insulation layer.

8. A steam generator, characterized in that, The steam generator includes a steam heater as described in any one of claims 1-7, and further includes: Raw water booster pump; The preheater is connected to the raw water booster pump; An evaporator, connected to the preheater, is capable of heating and evaporating the hot water provided by the preheater. The top of the evaporator is provided with a wire mesh filter, and the first inlet of the steam heater is connected to the wire mesh filter. A buffer tank is connected to the second inlet of the steam heater, and the buffer tank is connected to a steam output pipe.

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