CN112361443B - Extensible electric heating equipment - Google Patents
Extensible electric heating equipment Download PDFInfo
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- CN112361443B CN112361443B CN202011153435.1A CN202011153435A CN112361443B CN 112361443 B CN112361443 B CN 112361443B CN 202011153435 A CN202011153435 A CN 202011153435A CN 112361443 B CN112361443 B CN 112361443B
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- heating
- electric heating
- phase change
- flexible connector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
Abstract
The invention relates to an extensible electric heating device. The equipment comprises at least one electric heating control module, a plurality of parallel heating group pieces and at least one penetrating type flexible connector. The electric heating control module is arranged at the bottom of one end of the electric heating equipment; each parallel heating group piece comprises a closed annular fluid pipeline, fins and an electric heating element voltage regulator; the annular fluid pipeline is filled with a phase change medium, one end of the lower part of the heating group piece is provided with an electric heating element, and the electric heating element is uniformly regulated and controlled by the electric heating control module. The parallel heating group pieces realize the functions of extension and contraction through the flexible connectors, and the outer fins of the annular fluid pipelines are arranged in a staggered manner, so that the occupied area of the warmer is reduced when the warmer is in a contracted state; the flexible connector penetrates through each heating group piece, and a channel at the bottom of the flexible connector is connected with a pressure regulator arranged on each heating group piece, so that the regulation and control distribution of the phase change medium on each heating group piece can be realized; meanwhile, the flexible connector can enable the warmer to be unfolded in any posture, and the warmer is suitable for different application spaces and environment requirements.
Description
This application claims priority to chinese patent application entitled "an extensible electric heating device" entitled application number 202011107609.0 filed on 16/10/2020.
Technical Field
The invention relates to the field of heating, in particular to an extension type electric heating device.
Background
The existing electric heating equipment structure is divided into three main types according to heat transfer modes, one is to achieve the heating effect through the heat conduction and natural convection of the surface of the outer shell of the electric heater and the ambient air, such as an oil-filled electric heater; one is to heat the surrounding objects in the form of radiation, such as halogen tube electric heaters, quartz tube heating body electric heaters; one is an air heater, which generates heat through an electric heating wire and blows out the heat generated by the electric heating wire by a fan, such as an electric heating wire warmer and an electric heating film warmer. The oil-filled electric heater has the characteristics of no discharge, no light pollution, no noise, comfortable heating and the like, is superior to other two electric heaters, and has higher market share. The shell is heated through the oil in the heating shell to current oil-filled electric heater, and the natural convection current of rethread radiation and shell surface and air reaches the effect that improves the room temperature, and its limitation lies in: due to volume limitation, the heat exchange area is small; the temperature rise around the electric warmer and the range of the human comfort zone are limited due to the upward movement of the hot air. In addition, the oil-filled electric heater also has the problems of high power consumption and low starting speed due to the large power required for heating the heat conduction oil.
The steam type electric heater disclosed in patent CN110748944A adopts water as a phase change medium, realizes the quick start of electric heater under the low power heating condition, reaches energy-conserving effect. However, the steam directly flows back after being condensed on the upper part of the heating pipe, the generated liquid film can cause the reduction of the heat dissipation efficiency, and the regional limitation of the temperature rise of the electric heater is still not solved.
Patent CN110567034A discloses a portable electric heater of retractable adopts V type telescoping device to link to each other a plurality of piece that generates heat, has realized the flexible of electric heater, and every piece that generates heat uses the heat-generating body as the heat source to the mode of the heat conduction between the solid layer outwards conducts heat. The patent mainly solves the problem of limitation of heating area, but is limited by a heating mode, and the working efficiency is not high; at the same time, the extensibility of the hard-connection of its fins is very limited.
The foldable electric radiator capable of being unfolded and radiating disclosed by patent CN210107545U adopts water as a heating medium, can work in environments with different sizes, and is provided with a dining table plate and a water outlet pipe simultaneously for a user to get warm when eating and provide hot water for washing hands. The main problem of solving of this patent lies in variability and the multifunctionality of electric heater structure, and the regional limitation and the radiating efficiency problem of electric heater temperature rise still are not solved in the house in winter.
Patent CN204943645U discloses an intelligence oil heater, be equipped with the fin on its base, be equipped with electric gear on the base, base and control panel have the gyro wheel, can realize that each fin interval can be adjusted from this. The structure can be conveniently moved and stored, is beneficial to uniform and sufficient heating, and can only realize the adjustment in a single direction; meanwhile, the radiating fins are relatively independent, and the phase change media cannot be exchanged or distributed secondarily.
CN201090951Y discloses a superconducting heat transfer type heater, wherein a heat dissipation device is a vacuum sealed casing formed by an evaporator and a condenser and having a through interior, and heat is transferred from the heater to the casing through a superconducting heat transfer medium and then transferred from the casing to the environment. The patent makes no relevant claims on the extended heating function of the electric heater and does not see descriptions of internal surface features.
The patent CN2276125 discloses a high-efficiency electric heater with normal pressure, in which the boiling part is separated from the radiator, and the medium of the electric heating liquid is vaporized and enters the radiator, where it condenses to release heat. The liquid collecting tank is communicated with an air pipe, and simultaneously, the liquid collecting tank is the same as the vaporizer, so that the normal-pressure work is realized. The patent does not make relevant claims on the extension heating function of the electric heater, and the specification of the electric heater does not see relevant structures related to the regulation and control of the phase-change medium.
Patent CN203687151 discloses a foldable electric heater, links to each other through flexible pipe between the adjacent electric heater piece, has realized the folding of electric heater, has solved the problem that current electric heater is difficult to deposit because of bulky. The patent specification does not disclose the heating working mode of the electric heating device in the extension and contraction states, and the extension and contraction of the electric heating sheets can only realize the adjustment in a single direction.
Disclosure of Invention
The invention provides extensible electric heating equipment based on evaporation and condensation heat exchange of an annular pipeline, aiming at the problems of small heat exchange area, limited temperature rise area of an electric heater, large storage space occupation and the like of the conventional oil-filled electric heater. The part is applied to indoor heating, can obviously increase the heat dissipation area of the electric heater, reduces the storage space, simultaneously is effective in energy conservation, and improves the heating experience of users.
The technical scheme for solving the problems is as follows:
the extensible electric heating equipment comprises at least one electric heating control module, a plurality of parallel heating group pieces and at least one penetrating flexible connector; each heating group piece comprises a closed annular fluid pipeline, a fin, an electric heating element and a pressure regulator; filling liquid phase change medium into the annular fluid pipeline, wherein the liquid phase change medium is positioned at the lower part of the annular pipeline, and the gas phase change medium is positioned at the upper part; the staggered fins can effectively reduce the occupied area when the heating equipment shrinks; the bottom of one end of the heating group piece is provided with an electric heating element which consists of a plurality of heating rods and is uniformly regulated and controlled by an electric heating control module; the phase change medium flows to the other end of the annular pipeline after being vaporized at the heating end, and then is condensed to be in a liquid state and returns to the heating end. The flexible connector is positioned in the middle of the annular loop and is used for connecting two adjacent heating sheets so as to realize the functions of free extension and contraction; the independent passageway that the bottom of flexible connector was arranged, the voltage regulator of each heating group piece of UNICOM, inside packing has the phase change medium, under the local expansion of heating installation or the complete expansion state, according to the control demand of user to outside space local temperature, the voltage regulator can regulate and control and distribute the phase change medium.
The preferable scheme further comprises any one of the following technical characteristics:
the flexible connector is made of a flexible material with a trapezoidal characteristic, and has the characteristics of three degrees of freedom and unlimited space and free telescopic extension; the independent channel in bottom of connector runs through each heating group piece and has stored the phase change medium, according to outer space local heat dissipation demand, the voltage regulator can regulate and control the distribution to the phase change medium of each heating group piece.
A structure for enhancing boiling heat exchange, such as an inner fin, foamed metal and the like, is arranged below the liquid level of the phase change medium in the annular pipeline so as to accelerate the starting speed of the electric heating equipment.
And in order to eliminate the influence of non-condensable gas in the fluid pipeline and prevent gas leakage, vacuumizing the inner part of the inner shell.
The evaporation end in the annular pipeline adopts a hydrophilic or super-hydrophilic surface so as to enhance the wettability of the channel surface and improve the safety of the heating equipment; the inner surface of the condensation end is treated by hydrophobic or super-hydrophobic treatment to enhance the descending speed of the condensate, the circulation of nearby fluid and improve the heat exchange performance.
The pressure regulators are arranged on the heating unit pieces, the pressure regulators are connected in parallel with the lower channels of the flexible connectors, when the heating equipment works only on part of the heating unit pieces or each heating unit piece works in a non-uniform power state, phase change media can be distributed as required, the energy utilization efficiency is improved, and meanwhile, the danger caused by overlarge internal pressure of part of the annular fluid pipeline is avoided.
The fins which are arranged in a staggered mode are arranged on the outer surface of the shell of the annular pipeline, and the occupied area in a contraction state is effectively reduced.
The electric heating control module is arranged below the heating group piece at one end, and can realize local overall regulation and control on the electric heating elements of each group of parallel heating group pieces.
The pressure monitoring device is arranged in the heating set piece, when the pressure in a certain annular pipeline reaches a threshold value, the electric heating module and the pressure regulator immediately start feedback regulation and control, and the safe operation of the heating equipment is ensured.
Compared with the prior art, the invention has the following effects:
the flexible connector of the extensible electric heating equipment can be freely extended and retracted in three degrees of freedom, and can be distributed in a wider and more complex space after being extended, so that the effective heat dissipation area of the electric heating equipment is increased, and the practicability is enhanced. Compare traditional electric heater, can effectively promote human activity area's temperature and home range. Heating group piece cooperation flexible connector and crisscross fin arrange, compare traditional electric heater, the convenience that equipment removed and accomodate the operation is showing and is promoting. The parallel heat dissipation channel is matched with the design of the distributed electric heating element and the heating control module group, so that the local temperature control can be realized, and the comfort of a human body is improved.
According to the extension type electric heating device provided by the invention, the liquid phase change media between two adjacent heating sheets are connected and communicated through the independent channel at the bottom of the flexible connector, the phase change media are distributed as required by the pressure regulator at the lower part of each heating sheet, and the pressure of the phase change media in each heating sheet is controllable, safe and reliable. Compared with the traditional oil heater, the high-voltage work in the shell of the electric heater is avoided; secondly, when part of the heating fins work independently, the problem of evaporation to dryness of the heating fins with high heat dissipation power is avoided; meanwhile, the phase change media are distributed on each layer of heating fins according to requirements, and the local temperature of the external environment can be accurately controlled.
The invention provides an extension type electric heating device, wherein each layer of heating group piece utilizes the siphon loop heat pipe principle, liquid phase change medium is heated at one end of a circular pipeline, steam rises after boiling and gradually flows to the other side of the circular pipeline, and exchanges heat (natural convection and radiation) with external air through fins in the process of gradually flowing to the other side of the circular pipeline, and is condensed into liquid, returns to the bottom at the other side of the circular pipeline under the action of gravity and returns to a heating end. Compare in the mode of traditional oil-filled electric heater at same space evaporation, condensation oil gas, the suppression effect that the condensate whereabouts produced to the boiling has effectively been prevented to the arrangement mode of separation evaporation and condensation surface, has improved phase change heat exchange efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the extended electric heating apparatus of the present invention;
FIG. 2 is a schematic view of the heating fins of the extended electric heating apparatus of the present invention;
FIG. 3 is a schematic view of the arrangement of the interlaced fins in a contracted state of the heating apparatus;
fig. 4 shows the connection of the voltage regulator according to the invention.
Description of reference numerals:
1-an annular fluid conduit; 2-a fin; 3-a flexible linker; 4-an electrical heating element; 5-a voltage regulator; 6-electric heating control module; 7-a phase change medium; 8-an intensified boiling device; 9-a pressure sensor; 10-heating and slicing;
Detailed Description
Fig. 1 and 2 are schematic views of the extended electric heating device according to the present invention.
The present invention will be described in detail below with reference to the accompanying drawings. The utility model provides a malleable electric heating installation, its overall structure comprises annular fluid pipeline 1, fin 2, flexible connector 3, electric heating element 4, voltage regulator 5, electric heating control module group 6. Wherein the annular fluid pipeline 1 and the fins 2 form the outer surface of each layer of heating fins, and the fluid pipeline is made of a material with high heat conductivity coefficient (such as copper or aluminum) so as to improve the heat dissipation effect; the outside of the annular fluid pipe 1 is arranged with fins arranged in a staggered manner to increase the heat exchange area and facilitate storage (see fig. 3). The fluid conduit 1 is filled with a liquid phase change medium 7, at one end of which an electric heating element 4 is arranged. The liquid phase-change medium 7 is heated by the electric heating element 4 and then vaporized, steam rises and circulates to the other end of the annular fluid pipeline at the upper part of the heating set piece, heat is exchanged with external air through the fluid pipeline 1 and the fins 2 in a radiation and natural convection mode, the steam in the fluid pipeline 1 is gradually condensed, and the condensed liquid phase-change medium falls to the liquid level at the other end of the fluid pipeline 1 under the action of gravity, so that a circulation channel for boiling and condensation is formed. The arrangement mode of one side evaporation and the other side condensation effectively prevents the boiling heat exchange inhibiting effect caused by the direct falling of the condensate, effectively improves the boiling and condensation heat exchange performance, and obviously improves the efficiency of the electric heating warmer.
The annular fluid pipelines 1 are internally provided with pressure sensors, so that the pressure of the steam inside each annular fluid pipeline 1 can be monitored conveniently. As shown in fig. 4, the pressure regulator is arranged on each heating group piece 10, and the lower channels of the flexible connectors 3 are connected in parallel, so that the distribution amount of the phase-change medium can be adjusted as required when only part of the heating group pieces 10 work, and meanwhile, when the power of each heating group piece of the heating equipment is not uniform, the distribution as required of the phase-change medium is realized, the energy utilization efficiency is improved, and the danger caused by the overhigh internal working pressure of part of the annular fluid pipeline 1 is effectively avoided.
Preferably, the enhanced boiling device 8 can be arranged below the liquid level of the bottom of the annular fluid pipeline 1 close to the boiling end of the phase change medium, and can be an inner fin or a porous medium such as foamed copper, so that heat can be more widely transferred to the liquid working medium, a vaporization core is increased, the boiling efficiency of the liquid phase change medium 7 is higher under the same heating power, and the heater is started more quickly.
Preferably, the evaporation end of the annular fluid pipeline 1 is subjected to hydrophilic treatment, and the inner wall of the condensation end is subjected to hydrophobic treatment, so that the liquid film falling rate of the condensation end is increased, and the circulation speed is increased.
Adjacent annular fluid ducts 1 are connected by flexible connecting bodies 3. The flexible connector 3 is made of a flexible material with a trapezoidal characteristic, can be stretched and contracted according to space requirements, stores phase-change media in an independent channel at the bottom, and can realize the regulation and control and the distribution as required of the liquid phase-change media in each heating group piece by matching with the pressure regulator 5 arranged on each heating group piece. When the heat demand of the external space where a certain layer of heating group piece is located is higher, the power of the heating group piece is increased, more liquid phase change media are transferred to the heating group piece by the heating group piece with lower power through the pressure regulator, and the accurate regulation and control of the local temperature of the external space are realized. On the other hand, the electric heating equipment can be freely expanded or contracted according to the heating space and the user requirements and is not limited by the expansion angle and the direction. The heating control module 6 and the pressure regulator 5 can realize the overall regulation and control of the heating element power and the phase change medium capacity of each layer of heating fins so as to realize the local regulation of the heating power of each layer of heating fins and the distributed layout with power gradient.
The present invention is not described in detail with respect to the automatic control circuit conventionally configured in an electrically heated heating appliance.
The embodiments of the present invention are merely exemplary and not intended to limit the scope of the patent, and those skilled in the art may make modifications to the embodiments without departing from the spirit and scope of the patent.
Claims (5)
1. A malleable electrically heated heating device, comprising: comprises at least one electric heating control module, a plurality of parallel heating group pieces and at least one penetrating type flexible connector; each parallel heating group piece comprises a closed annular fluid pipeline, fins, an electric heating element and a pressure regulator; the closed annular fluid pipeline is filled with a phase change medium; one end of the lower part of the heating group piece is provided with an electric heating element which consists of a plurality of heating rods; the annular fluid pipeline of each heating assembly sheet utilizes the siphon loop heat pipe principle, the phase change medium rises after being vaporized at the heating end of the annular pipeline, and flows back to the heating end after being condensed at the other side of the annular fluid pipeline, and all the electric heating elements are uniformly regulated and controlled by the electric heating control module; the heating unit pieces are connected through a flexible connector, a liquid phase change medium connecting pipeline is arranged at the bottom of the flexible connector and is communicated with a pressure regulator of each heating unit piece, and a phase change medium can be prepared in each liquid phase change medium connecting pipeline connected in parallel through the pressure regulator; meanwhile, the flexible connector can be freely stretched and contracted, so that the requirements of different application spaces and use environments are met; the fins which are arranged in a staggered mode are arranged on the outer surface of the annular fluid pipeline, and the occupied area can be effectively reduced in a contraction state; the flexible connector is made of a flexible material with a trapezoidal characteristic, has three degrees of freedom, penetrates through each heating group piece, and has a free telescopic extension characteristic without space limitation; the pressure regulators are arranged on the heating unit pieces, the pressure regulators are connected in parallel with the lower channels of the flexible connectors, when the heating equipment works only on part of the heating unit pieces or each heating unit piece works in a non-uniform power state, phase change media can be distributed as required, the energy utilization efficiency is improved, and meanwhile, the danger caused by overlarge internal pressure of part of the annular fluid pipeline is avoided.
2. An electrically heated heating appliance as claimed in claim 1, wherein: and a reinforced boiling structure is arranged below the liquid level of the phase change medium in the heating unit.
3. An electrically heated heating appliance as claimed in claim 1, wherein: the evaporation side of the annular pipeline adopts a hydrophilic or super-hydrophilic structure, so that the surface wetting can be promoted, and the safety can be improved; the inner surface of the condensation side adopts a hydrophobic or super-hydrophobic structure, so that the reflux of the condensate can be promoted.
4. An electrically heated heating appliance as claimed in claim 1, wherein: the electric heating control module is arranged below the heating group piece at one end, and can realize local overall regulation and control on the electric heating elements of each group of parallel heating group pieces.
5. An electrically heated heating appliance as claimed in claim 1, wherein: the pressure monitoring device is arranged in the heating set piece, when the pressure in a certain annular pipeline reaches a threshold value, the electric heating module and the pressure regulator immediately start feedback regulation and control, and the safe operation of the heating equipment is ensured.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020111076090 | 2020-10-16 | ||
| CN202011107609 | 2020-10-16 |
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| Publication Number | Publication Date |
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| CN112361443A CN112361443A (en) | 2021-02-12 |
| CN112361443B true CN112361443B (en) | 2022-02-22 |
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| CN202011153435.1A Active CN112361443B (en) | 2020-10-16 | 2020-10-26 | Extensible electric heating equipment |
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| CN117059371B (en) * | 2023-09-14 | 2024-02-06 | 广州市得业高压电器有限公司 | Cooling device of transformer and use method |
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