CN219995561U - Electric heating system - Google Patents

Electric heating system Download PDF

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Publication number
CN219995561U
CN219995561U CN202321393900.8U CN202321393900U CN219995561U CN 219995561 U CN219995561 U CN 219995561U CN 202321393900 U CN202321393900 U CN 202321393900U CN 219995561 U CN219995561 U CN 219995561U
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China
Prior art keywords
mounting plate
heat conduction
circular mounting
channel
fan
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CN202321393900.8U
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Inventor
卢正竹
吕吉玉
于百川
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Qingdao Sifang Alstom Railway Transportation Equipment Co ltd
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Qingdao Sifang Alstom Railway Transportation Equipment Co ltd
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Abstract

The utility model discloses an electric heating system, which comprises a heat conduction mechanism, a heating mechanism and a heat dissipation mechanism, wherein the heat conduction mechanism comprises: at least one first air duct is a tubular structure provided with a first external heat conduction channel; the inner heat conduction pipe is of a tubular structure provided with an inner heat conduction channel, the inner heat conduction pipe is sleeved in the first outer heat conduction channel, and the central axis of the first outer heat conduction channel is parallel to the central axis of the inner heat conduction channel; the heating mechanism comprises a carbon fiber motor hot wire which is wound on the outer wall of the inner heat conduction pipe; the heat dissipation mechanism comprises a heat dissipation fan arranged at one end of the heating mechanism. The system can efficiently convert electric energy into heat energy, and the loss of heat energy transferred to a using terminal is minimized.

Description

Electric heating system
Technical Field
The utility model relates to the technical field of heating equipment, in particular to an electric heating system.
Background
The carbon fiber is used as a heating body substrate, has the advantages of good bending performance, pressure resistance, long service life, high heat efficiency and the like, solves the defects of the traditional heating body substrate such as silicon carbide, stainless steel, iron-aluminum alloy and the like, is rapidly popularized in recent years, and various heating structure electric heating products such as electric hair dryers, bath heaters, electric blankets, floor warms and the like based on the carbon fiber serving as the heating substrate are developed on the market at present. The carbon fiber electric heating products have higher energy efficiency and also accord with the energy saving and emission reduction policies advocated by the national university.
However, the existing electric heating products using carbon fibers as heating elements rarely give consideration to the problems of heat preservation, heat dissipation and directional heat supply, and the energy efficiency still needs to be further improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide an electric heating system which can efficiently convert electric energy into heat energy and minimize the loss of heat energy transferred to a using terminal.
In order to achieve the above object, the present utility model discloses an electric heating system, comprising a heat conduction mechanism, a heating mechanism and a heat dissipation mechanism, wherein the heat conduction mechanism comprises:
at least one first air duct is a tubular structure provided with a first external heat conduction channel; a kind of electronic device with high-pressure air-conditioning system
The at least one inner heat conduction pipe is of a tubular structure provided with an inner heat conduction channel, the inner heat conduction pipe is sleeved in the first outer heat conduction channel, and the central axis of the first outer heat conduction channel is parallel to the central axis of the inner heat conduction channel;
the heating mechanism comprises a carbon fiber motor hot wire which is wound on the outer wall of the inner heat conduction pipe;
the heat dissipation mechanism comprises a heat dissipation fan arranged at one end of the heating mechanism.
Preferably, the first outer heat conducting channel and the inner heat conducting channel are cylindrical channels, and the two cylindrical channels are coaxially arranged.
Preferably, a plurality of first fins are fixedly mounted on the inner wall of the inner heat conduction channel, the first fins extend from one end to the other end of the inner heat conduction channel along the axial direction of the inner heat conduction channel, the plurality of first fins are uniformly distributed along the circumferential direction of the heat conduction channel, and the inner heat conduction pipe and the first fins are made of heat absorption materials.
Preferably, an electric heating wire mounting groove is formed in the cylindrical outer wall of the inner heat conduction pipe in a spiral manner, and the carbon fiber motor hot wire is mounted in the electric heating wire mounting groove; the radial dimension of the cooling fan is larger than that of the end part of the inner heat conducting pipe.
Preferably, the heat conducting mechanism further comprises at least one second air channel, the second air channel is provided with a tubular structure of a second outer heat conducting channel, the end part of the first air channel is connected with the end part of the second air channel, the central axis of the first outer heat conducting channel is arranged in line with the central axis of the second outer heat conducting channel, the diameters of the circular ports of the first outer heat conducting channel and the second outer heat conducting channel are the same, and the heat radiating fan is fixed between the first air channel and the second air channel through the mounting assembly.
Preferably, the first air duct is finless, the inner wall of the second outer heat conduction channel is fixedly provided with a plurality of second fins, the second fins extend from one end to the other end of the second outer heat conduction channel along the axial direction of the second outer heat conduction channel, and the plurality of second fins are uniformly distributed along the circumferential direction of the second outer heat conduction channel.
Preferably, the mounting assembly comprises a fan inner fixing plate and a fan outer fixing plate, the fan outer fixing plate is fixedly connected with the fan inner fixing plate, the fan inner fixing plate is mounted on a port of the first air duct, the fan outer fixing plate is mounted on a port of the second air duct, and the cooling fan is mounted between the fan inner fixing plate and the fan outer fixing plate.
Preferably, the fan inner fixing plate comprises a first circular mounting plate and a first circular mounting plate, the first circular mounting plate is arranged in an inner ring of the first circular mounting plate and is concentrically arranged with the first circular mounting plate, the first circular mounting plate is connected with the first circular mounting plate through a plurality of first grid bars, and the first grid bars extend from the outer edge of the first circular mounting plate to the inner ring wall of the first circular mounting plate along the radial direction of the first circular mounting plate, and a plurality of first grid bars are uniformly distributed along the circumferential direction of the first circular mounting plate.
Preferably, the fan external fixing plate comprises a second circular mounting plate and a second circular mounting plate, the second circular mounting plate is arranged in an inner ring of the second circular mounting plate and is concentrically arranged with the second circular mounting plate, the second circular mounting plate is connected with the second circular mounting plate through a plurality of second grid bars, the second grid bars extend from the outer edge of the second circular mounting plate to an inner ring wall of the second circular mounting plate along the radial direction of the second circular mounting plate, the second grid bars are uniformly distributed along the circumferential direction of the second circular mounting plate, and the number of the second grid bars is larger than that of the first grid bars; the first round mounting plate, the first annular mounting plate, the second round mounting plate and the second annular mounting plate are arranged in line with the central axis of the first outer heat conduction channel, and the cooling fan is mounted on the second round mounting plate.
Preferably, the first annular mounting plate is provided with a plurality of first vent holes, the first vent holes are communicated with the ports of the first external heat conduction channel, and the plurality of first vent holes are uniformly distributed along the circumferential direction of the first annular mounting plate; the second annular mounting plate is provided with a plurality of second ventilation holes, the second ventilation holes are communicated with the ports of the second external heat conduction channel, and the second ventilation holes are uniformly distributed along the circumference of the second annular mounting plate.
Preferably, one end of the inner heat conduction pipe is fixedly arranged on the first annular mounting plate.
Preferably, the outer wall of the first air duct is coated with a fireproof heat-insulating layer.
Compared with the prior art, the electric heating system provided by the utility model is based on the design of the novel heating mechanism, the heat dissipation mechanism and the heat conduction mechanism which takes heat dissipation and heat preservation into consideration, the performances of the electric heating system in the aspects of heating, heat dissipation, heat transfer, heat loss and the like are balanced, electric energy is efficiently converted into heat energy at a source, the loss of heat energy transferred to a using terminal is minimized, and the energy conservation and emission reduction policy is well responded. Meanwhile, the system has the characteristics of novel structure and flexible adjustment of architecture, and can adapt to different heat conduction requirements.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only embodiments of the utility model and that other drawings may be obtained from the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an electric heating system of embodiment 1;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
fig. 4 is a schematic structural diagram of a first air duct in the present embodiment;
fig. 5 is a schematic structural diagram of a second air duct in the present embodiment;
fig. 6 is a schematic structural diagram of a port of the second air duct of the present embodiment;
FIG. 7 is a schematic view of the structure of the inner fixing plate of the fan according to the present embodiment;
fig. 8 is a schematic diagram of an external fan fixing plate structure according to the present embodiment.
Detailed Description
The present utility model will be specifically described below by way of exemplary embodiments. It is to be understood that structures and features in one embodiment may be beneficially incorporated in other embodiments without further recitation.
It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "horizontal", "vertical", "inner", "outer", "upper", "lower", "left", "right", "front", "rear", etc. are based on the positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the structures referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1
As shown in fig. 1 to 8, an electric heating system includes a heat conduction mechanism, a heat generation mechanism, and a heat radiation mechanism; the heat conduction mechanism comprises at least one first air duct 1 and at least one inner heat conduction pipe 4, and the first air duct 1 is of a tubular structure provided with a first outer heat conduction channel 17; the inner heat conduction pipe 4 is of a tubular structure provided with an inner heat conduction channel, the inner heat conduction pipe sleeve 4 is arranged in the first outer heat conduction channel 17, and the central axis of the first outer heat conduction channel 17 is parallel to the central axis of the inner heat conduction channel; the heating mechanism comprises a carbon fiber motor hot wire 5, and the carbon fiber motor hot wire 5 is wound on the outer wall of the inner heat conduction pipe 4; the heat dissipation mechanism comprises a heat dissipation fan 8 arranged at one end of the heating mechanism.
The electric heating system of this embodiment adopts the carbon fiber motor heater 5 that has good bending performance, withstand voltage performance, high thermal efficiency as the heat-generating body, twine it on interior heat pipe 4 and cover locate in the first wind channel 1, and the axis parallel arrangement of interior heat conduction channel of interior heat pipe 4 and the first outer heat conduction channel 17 of first wind channel 1, and set up radiator fan 8 in the one end of mechanism that generates heat, can be when guaranteeing heating efficiency, the hot-blast drive at radiator fan 8 of mechanism heating that generates heat, and the direction of leading hot-blast flow of interior heat conduction channel and first outer heat conduction channel 17, thereby realize directional heat transfer, reduce the heat loss in the hot-blast transmission process, high efficiency converts the electric energy into heat energy, make the loss that heat energy transfer to the user terminal minimum.
Specifically, an electric heating wire mounting groove is formed in the cylindrical outer wall of the inner heat conduction pipe 4 in a spiral manner, and a carbon fiber motor hot wire 5 is arranged in the electric heating wire mounting groove; the radial dimension of the cooling fan 8 is larger than the radial dimension of the end part of the inner heat conducting pipe 4, so that the forced flow of the hot air inside and outside the inner heat conducting pipe 4 is ensured, and the forced flow of the hot air in the first air duct 1 is also ensured.
In order to ensure the guiding effect of the heat conducting mechanism on the hot air, as shown in fig. 2, the first outer heat conducting channel 17 and the inner heat conducting channel are cylindrical channels, and the two cylindrical channels are coaxially arranged. Specifically, in order to further enhance the directional heat conduction effect, the inner wall of the inner heat conduction channel is fixedly provided with a plurality of first fins 6, the first fins 6 extend from one end to the other end of the inner heat conduction channel along the axial direction of the inner heat conduction channel, the plurality of first fins 6 are uniformly distributed along the circumferential direction of the heat conduction channel, the flowing direction of hot air is consistent with the direction of the first fins 6, and the guiding effect can be enhanced.
Wherein, in order to further enhance the heat efficiency, the inner heat conducting tube 4 and the first fins 6 are made of heat absorbing materials, and the inner heat conducting tube 4 and the first fins 6 made of heat absorbing materials can absorb and store heat energy when the heating mechanism heats, and most of the heat energy which is not emitted in the air is absorbed on the heat conducting tube 4 and the first fins 6. The first fins 6 absorb the heat reflected or directly emitted in the inner heat conducting channel, so that the heat is controllable as much as possible, and the ordered heat dissipation is facilitated. When the power is on and the heat is generated, the heating mechanism heats up, surrounding air can be directly heated, the first air duct 1 isolates heat from the external environment of the system, the heating mechanism heats up the heat conducting pipe 4 and the first fins 6 at the same time, so that the air temperature is not overheated, when the heat demand of the environment is low, the power supply of the heating mechanism can be disconnected, the heat stored by the heat conducting pipe 4 and the first fins 6 is used as a heat supply source, and the heat is sent out from the system through the driving of the cooling fan 8. Specifically, the heat absorbing material is any one of aluminum alloy, copper alloy, titanium metal and stainless steel.
Wherein, in order to lengthen the heat conduction length and ensure directional heat conduction effect, heat conduction mechanism still includes at least one second wind channel 2, the tubular structure of second outer heat conduction passageway 18 has been seted up to second wind channel 2, the tip in first wind channel 1 links to each other with the tip in second wind channel 2, the axis of first outer heat conduction passageway 17 and the axis collineation setting of second outer heat conduction passageway 18, the diameter of the circular port of first outer heat conduction passageway 17 and second outer heat conduction passageway 18 is the same, radiator fan 8 is fixed in between first wind channel 1 and the second wind channel 2 through the installation component.
Specifically, for flexible adaptation to different heat conduction demands, a plurality of first air channels 1 and second air channels 2 can be arranged according to different heat conduction lengths, the first air channels 1 and the second air channels 2 are arranged at intervals, the first air channels 1 are detachably connected with the second air channels 2, an inner heat conduction pipe is arranged in each first air channel, and the inner heat conduction pipe is arranged close to one end of the radiator fan 8. For example, as shown in fig. 1, the electric heating system includes two first air channels 1, and one second air channel 2 disposed between the two first air channels 1, two heat dissipation fans 8 are provided, one of the heat dissipation fans 8 is disposed between the second air channel 2 and the first air channel 1 on the left side thereof, and the other heat dissipation fan 8 is disposed at the right port of the first air channel 1 on the right side.
In order to enhance the directional heat conduction efficiency, as shown in fig. 4 to 6, the wall surface of the first outer heat conduction channel 17 of the first air duct 1 is smooth and has a finless structure so as to facilitate air flow, the inner wall of the second outer heat conduction channel 18 is fixedly provided with a plurality of second fins 3, the second fins 3 extend from one end to the other end of the second outer heat conduction channel 18 along the axial direction of the second outer heat conduction channel 18, and the plurality of second fins 3 are uniformly distributed along the circumferential direction of the second outer heat conduction channel 18 so as to enhance the directional guiding effect when hot air flows in the second outer heat conduction channel 18. In particular, the second fins 3 are made of heat absorbing material to have similar heat absorbing and energy storing effects as the first fins 6.
The installation component for installing the cooling fan 8 comprises an inner fan fixing plate 7 and an outer fan fixing plate 9, the outer fan fixing plate 9 is fixedly connected with the inner fan fixing plate 7, the inner fan fixing plate 7 is installed on a port of the first air duct 1, the outer fan fixing plate 9 is installed on a port of the second air duct 2, and the cooling fan 8 is installed between the inner fan fixing plate 7 and the outer fan fixing plate 9; the radiator fan 8 may be mounted on the first circular mounting plate or on the second circular mounting plate.
In order to ensure that hot air flows through the first air duct 1 and the second air duct 2, as shown in fig. 7, the fan inner fixing plate 7 includes a first circular mounting plate 13 and a first circular mounting plate 11, the first circular mounting plate 13 is disposed in an inner ring of the first circular mounting plate 11 and is concentrically disposed with the first circular mounting plate 11, the first circular mounting plate 11 is connected with the first circular mounting plate 13 through a plurality of first grid bars 12, the first grid bars 12 extend from an outer edge of the first circular mounting plate 12 to an inner ring wall of the first circular mounting plate 11 along a radial direction of the first circular mounting plate 13, and the plurality of first grid bars 12 are distributed along a periphery Xiang Junyun of the first circular mounting plate 13; the first annular mounting plate 11 is provided with a plurality of first vent holes 10, the first vent holes 10 are communicated with ports of the first outer heat conduction channels 17, and the plurality of first vent holes 10 are uniformly distributed along the circumferential direction of the first annular mounting plate 11. As shown in fig. 8, the fan external fixing plate 9 comprises a second circular mounting plate 19 and a second circular mounting plate 16, the second circular mounting plate 19 is arranged in the inner ring of the second circular mounting plate 16 and is concentric with the second circular mounting plate 16, the second circular mounting plate 16 is connected with the second circular mounting plate 19 through a plurality of second grid bars 15, the second grid bars 15 extend from the outer edge of the second circular mounting plate 19 to the inner ring wall of the second circular mounting plate 16 along the radial direction of the second circular mounting plate 19, and the plurality of second grid bars 15 are uniformly distributed along the circumferential direction of the second circular mounting plate 19; the second annular mounting plate 16 is provided with a plurality of second ventilation holes 14, the second ventilation holes 14 are communicated with ports of the second external heat conduction channel 18, and the plurality of second ventilation holes 14 are uniformly distributed along the circumferential direction of the second annular mounting plate 16; the first circular mounting plate 13, the first circular mounting plate 11, the second circular mounting plate 19, and the second circular mounting plate 16 are arranged in line with the central axis of the first outer heat conducting channel 17. Specifically, one end of the inner heat conducting pipe 4 is fixedly installed on the first annular mounting plate.
Specifically, the number of the second grills 15 is greater than the number of the first grills 12, and the heat radiation fan 8 is mounted on the second circular mounting plate. The fan inner fixing plate 7 has fewer first grid bars 12 and is fixedly connected with the heating mechanism instead of being directly and fixedly connected with the cooling fan 8. The fan outer fixing plate 9 is directly connected with the second air duct 2, the cooling fan 8 and the fan inner fixing plate 7, and the second grid bars 15 of the fan outer fixing plate 9 are more so as to prevent larger foreign matters from being sucked into the air duct to cause influence.
In order to control heat to circulate inside the system as much as possible, the outer wall of the first air duct 1 is coated with a fireproof heat-insulating layer, and the fireproof heat-insulating layer can be made of any one of epoxy resin and silicon dioxide. Specifically, the main structural body materials of the first air duct 1 and the second air duct 2 are nonmetal materials, and specifically, the main structural body materials can be any one of epoxy resin and glass fiber reinforced plastic.
Specifically, in order to flexibly assemble according to the use requirement, all the components of the embodiment can be connected with each other by adopting a detachable connection mode, for example, a mounting hole is formed on the component to be connected, and the component is connected through a fixing bolt and a nut passing through each mounting hole.
The parts of the above embodiments, which are not described in detail, are conventional in the art, and for example, the connection means may be any existing connection means such as threaded connection, clamping connection, welding, riveting, etc.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An electrical heating system comprising a thermally conductive mechanism, a heat generating mechanism and a heat dissipating mechanism, the thermally conductive mechanism comprising:
at least one first air duct is a tubular structure provided with a first external heat conduction channel; a kind of electronic device with high-pressure air-conditioning system
The at least one inner heat conduction pipe is of a tubular structure provided with an inner heat conduction channel, the inner heat conduction pipe is sleeved in the first outer heat conduction channel, and the central axis of the first outer heat conduction channel is parallel to the central axis of the inner heat conduction channel;
the heating mechanism comprises a carbon fiber motor hot wire which is wound on the outer wall of the inner heat conduction pipe;
the heat dissipation mechanism comprises a heat dissipation fan arranged at one end of the heating mechanism.
2. An electrical heating system as in claim 1 wherein the first outer thermally conductive channel and the inner thermally conductive channel are both cylindrical channels and both cylindrical channels are coaxially disposed.
3. The electrical heating system of claim 2, wherein a plurality of first fins are fixedly mounted on the inner wall of the inner heat conduction channel, the first fins extend from one end of the inner heat conduction channel to the other end along the axial direction of the inner heat conduction channel, and the plurality of first fins are uniformly distributed along the circumferential direction of the heat conduction channel; the inner heat pipe and the first fin are both made of heat absorbing material.
4. The electric heating system according to claim 2, wherein an electric heating wire installation groove is formed in the cylindrical outer wall of the inner heat conduction pipe in a spiral shape, and the carbon fiber motor hot wire is installed in the electric heating wire installation groove; the radial dimension of the cooling fan is larger than that of the end part of the inner heat conducting pipe.
5. The electrical heating system of claim 2, wherein the heat conducting mechanism further comprises at least a second air duct, the second air duct is provided with a tubular structure of a second external heat conducting channel, the end of the first air duct is connected with the end of the second air duct, the central axis of the first external heat conducting channel is arranged in line with the central axis of the second external heat conducting channel, the diameters of the circular ports of the first external heat conducting channel and the second external heat conducting channel are the same, and the cooling fan is fixed between the first air duct and the second air duct through a mounting assembly.
6. The electrical heating system of claim 5, wherein the first air duct is finless, the second outer heat transfer channel inner wall is fixedly mounted with a plurality of second fins extending from one end of the second outer heat transfer channel to the other end in an axial direction of the second outer heat transfer channel, and the plurality of second fins are evenly distributed along a circumferential direction of the second outer heat transfer channel.
7. An electrical heating system in accordance with claim 5 wherein said mounting assembly comprises an inner fan plate and an outer fan plate, said outer fan plate being fixedly connected to said inner fan plate, said inner fan plate being mounted on a port of said first air duct, said outer fan plate being mounted on a port of said second air duct, said radiator fan being mounted between said inner fan plate and said outer fan plate.
8. The electrical heating system of claim 7, wherein the fan internal fixation plate comprises a first circular mounting plate and a first circular mounting plate, the first circular mounting plate being disposed in an inner ring of the first circular mounting plate and being disposed concentrically with the first circular mounting plate, the first circular mounting plate being connected to the first circular mounting plate by a plurality of first grid bars, the first grid bars extending in a radial direction of the first circular mounting plate from an outer edge of the first circular mounting plate to an inner ring wall of the first circular mounting plate, the plurality of first grid bars being evenly distributed in a circumferential direction of the first circular mounting plate; the fan outer fixing plate comprises a second circular mounting plate and a second circular mounting plate, the second circular mounting plate is arranged in the inner ring of the second circular mounting plate and is concentrically arranged with the second circular mounting plate, the second circular mounting plate is connected with the second circular mounting plate through a plurality of second grid bars, the second grid bars extend from the outer edge of the second circular mounting plate to the inner ring wall of the second circular mounting plate along the radial direction of the second circular mounting plate, a plurality of second grid bars are uniformly distributed along the circumferential direction of the second circular mounting plate, and the number of the second grid bars is larger than that of the first grid bars; the first circular mounting plate, the second circular mounting plate and the second circular mounting plate are arranged in line with the central axis of the first external heat conduction channel; the heat radiation fan is mounted on the second circular mounting plate.
9. The electrical heating system of claim 8, wherein the first annular mounting plate is provided with a plurality of first vent holes, the first vent holes are communicated with the ports of the first outer heat conduction channel, and the plurality of first vent holes are uniformly distributed along the circumferential direction of the first annular mounting plate; the second annular mounting plate is provided with a plurality of second ventilation holes, the second ventilation holes are communicated with the ports of the second external heat conduction channel, and the second ventilation holes are uniformly distributed along the circumferential direction of the second annular mounting plate; one end part of the inner heat conduction pipe is fixedly arranged on the first annular mounting plate.
10. The electrical heating system of claim 1, wherein an outer wall of the first air duct is covered with a fire-resistant insulating layer.
CN202321393900.8U 2023-06-02 2023-06-02 Electric heating system Active CN219995561U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321393900.8U CN219995561U (en) 2023-06-02 2023-06-02 Electric heating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321393900.8U CN219995561U (en) 2023-06-02 2023-06-02 Electric heating system

Publications (1)

Publication Number Publication Date
CN219995561U true CN219995561U (en) 2023-11-10

Family

ID=88604509

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321393900.8U Active CN219995561U (en) 2023-06-02 2023-06-02 Electric heating system

Country Status (1)

Country Link
CN (1) CN219995561U (en)

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