CN217584876U - Low-power solid electric regenerative furnace structure - Google Patents

Abstract

The utility model provides a miniwatt solid electricity regenerator structure, includes lagging casing, electric heating element, heat transfer unit, solid heat accumulator and circulating fan, the technical essential is: the solid heat storage body is internally and uniformly distributed with hot air tube bundles which are arranged in parallel and are provided with electric heating parts, the inlet and outlet ends of the hot air tube bundles form a closed loop with circulating air through air pipes on the side surfaces of the solid heat storage body, a heat exchange unit is also arranged in a cavity close to the inlet end of the circulating fan, and the heat exchange unit comprises a hot water type heat exchanger or a steam type heat exchanger.

Description

Low-power solid electric regenerative furnace structure

Technical Field

The utility model belongs to the technical field of solid electric heat accumulation stove, especially, relate to a heat accumulation temperature works under 200 ℃ -500 ℃, has modular structure, can wholly transport and can realize the solid electric heat accumulation stove structure of single or many concatenation outputs.

Background

At present, a common manufacturer for producing the solid electric heat storage furnace adopts a customized method for users, firstly produces parts in a factory workshop, and then sends a team with the capabilities of installing a solid heat storage body, electrically heating, circulating air/water heat exchange, preserving heat, electrically insulating and thermally controlling to a field to finish delivery equipment. Regardless of the delivered power of the equipment, the personnel dispatched to the site construction need to include various kinds of civil engineering, heating ventilation, welding and electric control. For the equipment with the power of more than 1000kW, the ratio of the field delivery construction cost to the sales price of the equipment is 8-15%, and if the equipment power is less than 50kW, the ratio of the field delivery construction cost to the sales price of the equipment is 30-50%. Therefore, the bottleneck restricting the market opening of the low-power solid electric regenerative furnace is to get rid of the production mode of field installation and delivery.

Disclosure of Invention

To the problems existing in the prior art, the utility model provides a low-power solid electric heat accumulation furnace structure. The production mode of household appliance enterprises such as air conditioners, water heaters and the like is adopted, complete machine production is realized in a factory workshop, and the whole is transported to a site to be installed in place. The performance advantages of the traditional solid electric regenerative furnace can be ensured, and the field assembly difficulty and cost can be greatly reduced.

In order to achieve the above purpose, the present invention is realized by the following technical solutions: it is including the lagging casing to and the electric heating part that sets up in this lagging casing, the heat transfer unit, solid heat accumulator and circulating fan, the centralized control case that has switch then sets up on the lateral wall of lagging casing, its characterized in that: hot air tube bundles which are arranged in parallel and are provided with electric heating parts are uniformly distributed in the solid heat accumulator, the inlet end of each hot air tube bundle is connected with a low-temperature flange at the outlet of the circulating fan through an air return pipeline on the side surface of the solid heat accumulator, and the outlet end of each hot air tube bundle is connected with a high-temperature flange close to the inlet of the circulating fan through an air guide pipeline on the other side surface of the solid heat accumulator; and a heat exchange unit is also arranged in the cavity between the high-temperature flange and the inlet of the circulating fan, the heat exchange unit comprises a hot water type heat exchanger or a steam type heat exchanger, and an input pipe interface and an output pipe interface of the heat exchanger are arranged on the outer side of the heat-insulating shell.

The electric heating component of the utility model is an electric heating wire or an electric heating sheet; the outer side of the hot air pipe bundle is also connected with radiating fins which are uniformly distributed in the solid heat storage body. The hot air pipe bundle is a solid heat accumulator heat accumulation and release pipeline which integrates an electric heating wire and a radiating fin.

The utility model discloses a: the granular heat storage material is a fine granular high-temperature-resistant refractory material, and has the characteristics of bulk pouring, such as: quartz sand, salt, iron powder, magnesium oxide and alumina refractory aggregate.

The utility model discloses a: the hot air tube bundles are uniformly arranged in the electric heating component and form an air path same-path structure with the air guide pipeline and the air return pipeline.

The utility model discloses a: the heat exchanger is divided into a hot water type heat exchanger and a steam type heat exchanger. The steam type is composed of a heat-absorbing fin tubular structure heat exchanger and a vertical tubular steam drum, wherein the upper port of the heat-absorbing fin tubular structure heat exchanger is connected with the middle part of the vertical tubular steam drum, and the lower port of the heat-absorbing fin tubular structure heat exchanger is connected with the bottom part of the vertical tubular steam drum; the hot water type heat exchanger only has a heat absorption fin tubular structure; the heat exchanger with the heat absorption fin tubular structure is formed by welding an array fin tube bundle; the vertical tubular steam pocket is a pressure-resistant and temperature-resistant metal container which is connected with the output port and the input port.

The utility model discloses a: the input pipe interface and the output pipe interface refer to an access port for hot water or steam heat exchange.

The utility model discloses still include: the centralized control box is a control device which can control one or more devices to work in parallel.

The utility model has the advantages that: the utility model provides a pair of miniwatt solid electricity regenerator structure is a standardized, the fashioned product of batch production, possesses that the structure integrated level is high, the assembly is nimble, can be according to project demand list or many concatenation work to can form comprehensive integrated control, reach small, the superior production electricity regenerator of performance.

Drawings

The following detailed description of the embodiments of the present invention is to be read in connection with the accompanying drawings, which are to be construed as exemplary and illustrative only and not limiting in any way. The drawing is only a schematic diagram of an embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawing without creative efforts.

FIG. 1 is a schematic sectional view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a solid heat storage with an electric heating element according to the present invention;

fig. 3 is a schematic sectional view of the heat exchange unit of the present invention.

Description of the main components in the figures: a solid heat accumulator 1; an electric heating part 2; a heat-insulating housing 3; a heat exchange unit 4; a centralized control box 5; a hot air tube bundle 201; a heating wire 202; a heat sink 203; a draft duct 204; an induced draft flange 205; a return air duct 206; a return air flange 207; a circulating fan 401; a heat exchanger 402; a heat exchange box frame 403; a high temperature air duct 404; a high temperature flange 405; a low temperature air duct 406; a cryogenic flange 407; an output pipe interface 408; an input tube interface 409; a finned tubular construction heat exchanger 410; a vertical tubular steam drum 411.

Detailed Description

The utility model relates to a miniwatt solid electric heat accumulation furnace structure, as fig. 1-fig. 3 institute, 3 in the picture be lagging casing, be provided with the solid heat accumulator 1 that the heap of gathering structure in bulk by graininess refractory material in this lagging casing 3's inside, evenly distributed has the hot-blast tube bank 201 of parallel arrangement and electrified heater block 2 each other in this solid heat accumulator 1, the inside electric heating wire 202 that is equipped with of electric heating block 2, still be connected with fin 203 in the hot-blast tube bank 201 outside, this fin evenly distributed is in solid heat accumulator 1, this hot-blast tube bank is that support electric heating wire and fin in 1 heat accumulation of solid heat accumulator, heat release pipe way of an organic whole. The inlet end of the hot air tube bundle 201 is connected with an air return flange 207 through an air return pipeline 206 on the side surface of the solid heat accumulator 1, and the air return flange 207 is hermetically butted with a low-temperature flange 407 at the outlet of the circulating fan 401; the outlet end of the hot air tube bundle 201 is connected with an air inducing flange 205 through an air inducing pipeline 204 on the other side surface of the solid heat accumulator 1, and the air inducing flange 205 is in sealing butt joint with a high-temperature flange 405 close to the inlet of the circulating fan 401; the centralized control box 5 with a power switch is arranged on the side wall of the heat-insulating shell; a heat exchange unit 4 is further arranged in the cavity close to the inlet end of the circulating fan 401, the heat exchange unit comprises a hot water type heat exchanger or a steam type heat exchanger, and an input pipe connector 409 and an output pipe connector 408 of the heat exchanger are arranged on the outer side of the heat-insulating shell.

As shown in fig. 1-3, after the induced air flange 205 and the return air flange 207 in the electric heating part 2 are respectively in sealed butt joint with the high-temperature flange 405 and the low-temperature flange 407 in the heat exchange part 4, the heat preservation shell 3 is assembled and fixed to form the inner cavity of the solid heat accumulator, and finally, the power supply interface and the heat output interface are configured, so that the factory leaving condition of the whole machine is met. Carrying out single or multiple splicing installation on the equipment transportation user site according to project requirements; after the equipment is in place, the granular heat storage materials are filled into the heat preservation shell 3 to form a solid heat storage body 1 and tamped, finally, the centralized control box 5 is installed, the access of an external power supply and the butt joint work of the interface 408 of the heat output pipe and the interface 409 of the input pipe are completed, and the whole set of equipment has power-on and system debugging conditions. If a user installs hot water type equipment, the circulating water of the external network outputs high-temperature water through an output pipe interface 408, low-temperature water flows back to a heat absorption finned tube component 410 in a heat exchanger 402 through an input pipe interface 409, is regulated to a rated water supply temperature through a circulating fan 401 in a frequency conversion mode, and then is output through the output pipe interface 408; if a user installs a steam type device, high-temperature steam is output by the output pipe interface 408, low-temperature supplemented water is supplied to the heat absorption fin tubular structure heat exchanger 410 and the vertical tubular steam drum 411 in the heat exchanger 402 through the input pipe interface 409, is subjected to frequency conversion regulation and control to reach the rated steam temperature through the circulating fan 401, and is output to a steam user through the output port 408. As shown in fig. 2, the electric heating component 2 comprises a hot air pipe bundle 201, which highly integrates a heating wire 202 and a cooling fin 203, and effectively connects a wind guiding pipe 204 and a wind returning pipe 206 to form a structure integrating a wind path with a heating function. As shown in fig. 3, the heat exchange unit 4 connects a circulating fan 401 and a heat exchanger 402 inside a heat exchange box body 403 thereof with a high temperature air duct 404 and a low temperature air duct 406 to form a hot air heat release channel inside the heat exchange unit 4. The internal hot air heat release channel is connected with the induced air flange 205 and the return air flange 207 through the high-temperature flange 405 and the low-temperature flange 407 to form a closed-loop heat release channel, and the hot air is driven by the circulating fan 401 to convey the heat energy stored in the solid heat accumulator 1 to the heat exchanger 402 to complete the heat exchange process.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail, it should be understood by those skilled in the art that the embodiments of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the embodiments of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a miniwatt solid electricity regenerator structure, it is including the lagging casing to and the electric heating part that sets up in this lagging casing, heat transfer unit, solid heat accumulator and circulating fan, the centralized control case that has switch then sets up on the lateral wall of lagging casing, its characterized in that: hot air tube bundles which are arranged in parallel and are provided with electric heating parts are uniformly distributed in the solid heat accumulator, the inlet end of each hot air tube bundle is connected with a low-temperature flange at the outlet of the circulating fan through an air return pipeline on the side surface of the solid heat accumulator, and the outlet end of each hot air tube bundle is connected with a high-temperature flange close to the inlet of the circulating fan through an air guide pipeline on the other side surface of the solid heat accumulator; and a heat exchange unit is also arranged in the cavity between the high-temperature flange and the inlet of the circulating fan, the heat exchange unit comprises a hot water type heat exchanger or a steam type heat exchanger, and an input pipe interface and an output pipe interface of the heat exchanger are arranged on the outer side of the heat-insulating shell.

2. The solid electric heat storage furnace structure according to claim 1, characterized in that: the electric heating part is an electric heating wire or an electric heating sheet.

3. The solid electric heat storage furnace structure according to claim 1, characterized in that: the outer side of the hot air pipe bundle is also connected with radiating fins which are uniformly distributed in the solid heat storage body.

4. The solid electric heat storage furnace structure according to claim 1, wherein: the hot air pipe bundle is a solid heat accumulator heat accumulation and release pipeline which integrates a heating wire and a radiating fin.

5. The solid electric heat storage furnace structure according to claim 1, characterized in that: the input pipe interface and the output pipe interface refer to an access port for heat exchange of hot water or steam.

6. The solid electric heat storage furnace structure according to claim 1, characterized in that: the steam type heat exchanger comprises a finned tubular heat exchanger and a vertical tubular steam drum connected with the heat exchanger in series.

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