CN110001355B - Portable phase-change heat storage and supply device - Google Patents
Portable phase-change heat storage and supply device Download PDFInfo
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- CN110001355B CN110001355B CN201910405073.1A CN201910405073A CN110001355B CN 110001355 B CN110001355 B CN 110001355B CN 201910405073 A CN201910405073 A CN 201910405073A CN 110001355 B CN110001355 B CN 110001355B
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- change heat
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- heating
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- 238000005338 heat storage Methods 0.000 title claims abstract description 83
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 239000011232 storage material Substances 0.000 claims abstract description 29
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 230000008859 change Effects 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims description 6
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- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 9
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 9
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- 239000012782 phase change material Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The present disclosure provides a portable phase change heat storage and supply device, comprising: a main body, which is integrally cylindrical and comprises: the inner pipe body is hollow and tubular, and phase-change heat storage materials are filled in the inner pipe body; the heating body is uniformly arranged along the axial direction inside the tube body and is used for heating the phase change heat storage material inside the tube body after being electrified; the inner hot air duct is axially arranged along the pipe body and is used for heating air circulating inside; the first heat insulation layer is coaxially arranged outside the inner pipe body with the inner pipe body; the outer pipe body and the inner pipe body are coaxially arranged outside the first heat insulation layer, and a cool air duct is arranged between the pipe wall of the outer pipe body and the first heat insulation layer; the second heat insulation layer is wrapped outside the outer tube; the fan is arranged at one end of the main body and used for sucking outside air into the main body and respectively conveying the outside air into the hot air duct and the cool air duct; the other end of the main body is an air outlet, so that the mixing of cool air and hot air is realized, and the output of warm air with proper temperature is completed.
Description
Technical Field
The disclosure relates to the field of mobile heat supply, in particular to a portable phase-change heat storage and supply device.
Background
The electric automobile gradually replaces the fuel automobile, so that the emission of carbon dioxide and pollutants in the transportation industry can be reduced to a certain extent, and the problems of petroleum shortage, excessive carbon dioxide emission, air pollution and the like in China are alleviated. However, the current electric automobile still faces a short technical board with higher battery cost and lower energy storage density, which makes the endurance mileage of the electric automobile relatively insufficient. Particularly, under the low-temperature environment in winter, the battery efficiency is reduced, the heat consumption requirement is increased, the endurance of the electric automobile is further reduced, the reduction range can be up to more than 50%, and the problem of bottleneck of popularization and development of the electric automobile is already solved.
Existing automobile air conditioning technology
The existing automobile air conditioner is an application of heating ventilation air conditioning technology, particularly to automobiles, can maintain the comfort of the interior thermal microenvironment of the automobile, and keeps the indexes such as the interior temperature and humidity of the automobile in a standard range of thermal comfort. The difference between the electric automobile and the traditional diesel locomotive mainly focuses on the refrigerating and heating processes. The difference in the refrigerating process is mainly a driving mode of a compressor, the traditional automobile air conditioner adopts an engine to provide power, and the electric automobile air conditioner adopts electric energy to drive. The principle difference exists between the heating modes.
(1) The heat source is not acquired by the air conditioner when the traditional automobile air conditioner is used for heating, and is provided by a radiating water tank of the automobile, so that the heating is basically free from power consumption loss and is completed through the waste heat of the automobile. Only in winter, in order to quickly supply hot air when the automobile is started, the heating wires inside the fan heater can be started briefly. Under the low-temperature working condition in winter, the lower the outside air temperature is, the higher the internal heat load is, but the continuous voyage of the automobile is not influenced.
(2) Heating schemes of electric automobiles can be divided into three categories: PTC air conditioning system, heat pump air conditioning system and waste heat air conditioning system.
(1) PTC (positive temperature coefficient ) in a PTC (positive temperature coefficient) air conditioning system refers to a positive temperature coefficient thermistor, simply referred to as PTC thermistor. PTC thermistors are typically temperature sensitive semiconductor resistors whose resistance increases stepwise with increasing temperature above a certain temperature (curie temperature). The PTC air conditioning system adopts a PTC thermistor to replace a radiating water tank in the traditional automobile air conditioner, so that the system can change the fuel automobile air conditioning system into an electric automobile air conditioning system very briefly. Under ideal working conditions, the COP of the PTC air conditioner is 1, the power consumption of the system is high, the efficiency is low, and the endurance of the electric automobile can be obviously reduced.
(2) The heat pump air conditioning system of the electric automobile is similar to the heat pump air conditioning system in a building, but serious frosting under the heating working condition of the heat pump air conditioning leads to serious shortage of heating quantity, and condensed water on a heat exchanger in an air duct is rapidly evaporated when the system is converted into a heating mode from a defrosting mode, frosting is carried out on a windshield, and driving safety is affected.
(3) The principle of the electric automobile waste heat air conditioning system is that a part of energy is converted into heat energy in the discharging process of the battery, and if the part of waste heat can be effectively utilized, the efficiency of the battery can be improved, and the electric automobile waste heat air conditioning system can be used for driving the on-board air conditioning system to meet the requirement of the automobile interior on temperature. Waste heat air conditioning systems mainly utilize waste heat from a battery pack by means of a heat pump refrigeration system. However, the battery waste heat is insufficient to maintain the temperature of the battery in a low-temperature environment, and heat cannot be supplied to the interior of the vehicle.
(II) solving the problem of winter heat supply of the existing electric automobile
In order to solve the problem of the great reduction of endurance caused by heat supply under the low-temperature working condition of the electric automobile in winter relatively stably and efficiently, researchers mainly propose a low-energy consumption heat pump air conditioning system, such as a solar auxiliary heat pump.
The solar energy auxiliary electric automobile heat pump air conditioning system uses solar energy as a power source of the auxiliary electric automobile heat pump air conditioning system. The solar cell panel is arranged on the roof of the electric automobile, so that on one hand, the solar radiation can be prevented from entering the automobile through the roof in summer, the load of the air conditioning system is reduced, and the consumption of the air conditioning system to the electric quantity of the power battery is reduced; on the other hand, the solar battery can provide electric energy for the whole vehicle and provide more energy sources for an air conditioning system of the electric vehicle. However, the technology increases the weight of the whole vehicle, and has no substantial improvement on the problem of reduced endurance caused by heat supply in winter, and the endurance is still improved in a mode of increasing the battery capacity.
In combination with the analysis, in order to solve the problem of endurance degradation caused by heat supply of the electric automobile under the low-temperature working condition in winter, the existing method is generally complex and can not well solve the problem. However, this problem is a key problem in the promotion and development of electric vehicles, and thus an efficient, convenient and reliable technology is required.
Phase-change heat storage heating is an energy-saving and efficient heating technology in the field of building air conditioners. The technology is often applied to the heating field to solve the contradiction that the energy supply and demand are not matched in time and space, and common technologies comprise solar phase-change heat storage heating, phase-change heat storage electric heating and the like. The solar phase-change heat storage heating system adopts a phase-change heat storage device, stores solar energy through a heat storage cycle in sunny daytime in winter, and heats the room through a heat release cycle at night. The phase-change heat-storage electric heating is suitable for places with larger electric difference in the morning and evening, and can play the role of peak clipping and valley filling. However, the phase-change heat storage heating technology is oriented to the field of fixed and larger-scale building air conditioners and is not suitable for moving and miniaturized heating scenes of electric automobiles and the like.
From the above analysis, the existing mobile heat storage and supply technical field still faces the following problems:
1) The battery efficiency of the electric automobile is reduced due to low temperature in winter, meanwhile, the energy consumption of the electric automobile is increased due to large heat load in winter, and the electric automobile can greatly reduce the endurance mileage of the electric automobile in winter under the combined action of the two, so that the problem of heating of the electric automobile in winter is not solved;
2) At present, the energy supply of the electric automobile still mainly depends on the electric energy stored in a battery, on one hand, the electric energy storage cost is high, and on the other hand, the high-grade electric energy is used for providing low-grade heat energy to cause larger irreversible loss, so that the energy utilization concept of 'grade opposite and cascade utilization' is not met;
3) The existing electric automobile heat storage and supply technology relies on the sensible heat of water to store heat, so that the heat storage density is low, and the heat supply requirement of the electric automobile cannot be met;
4) The existing heat storage and heating technology is mainly aimed at the field of building air conditioning, is not oriented to the mobile heat demand, has a large scale, and does not consider applicability, portability, flexibility and the like of a heat storage device.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
First, the technical problem to be solved
Based on the above problems, the present disclosure provides a portable phase-change heat storage and supply device, so as to alleviate the technical problems of large volume, immobility, poor flexibility, low heat storage density and the like of the phase-change heat storage and supply device in the prior art.
(II) technical scheme
The present disclosure provides a portable phase change heat storage and supply device, comprising: a main body, which is integrally cylindrical and comprises: the inner pipe body is hollow and tubular, and phase-change heat storage materials are filled in the inner pipe body; the heating body is uniformly arranged along the axial direction inside the tube body and is used for heating the phase change heat storage material inside the tube body after being electrified; the inner hot air duct is axially arranged along the pipe body and is used for heating air circulating inside; the first heat insulation layer is coaxially arranged outside the inner pipe body with the inner pipe body; the outer pipe body and the inner pipe body are coaxially arranged outside the first heat insulation layer, and a cool air duct is arranged between the pipe wall of the outer pipe body and the first heat insulation layer; the second heat insulation layer is wrapped outside the outer tube; the fan is arranged at one end of the main body and used for sucking outside air into the main body and respectively conveying the outside air into the hot air duct and the cool air duct; the other end of the main body is an air outlet, so that the mixing of cool air and hot air is realized, and the output of warm air with proper temperature is completed.
In an embodiment of the present disclosure, the main body further includes: and the external hot air duct is arranged between the outer wall of the inner pipe body and the first heat insulation layer.
In an embodiment of the present disclosure, the phase change heat storage material includes: crystalline hydrated salts, molten salts, liquid metals.
In an embodiment of the present disclosure, the phase change heat storage material includes: at least one of paraffin, fatty acid, polyol or ester.
In an embodiment of the present disclosure, the heating body includes: at least one of a heating wire, a heating rod or a heating sheet.
In an embodiment of the disclosure, the cross section of the main body is circular, elliptical or polygonal.
In an embodiment of the disclosure, the phase change heat storage material has a phase change temperature of: 30-500 ℃.
In this disclosed embodiment, interior body, outside hot air wind channel, inside hot air wind channel and cold wind channel are provided with the structure of strengthening the heat transfer, include: fins, threads, bends, micro-channels, heat pipes.
In an embodiment of the disclosure, the type of the first insulating layer or the second insulating layer includes: a solid insulating layer, a gas insulating layer or a vacuum insulating layer.
In the embodiment of the disclosure, the number of the fans is 1-10.
(III) beneficial effects
According to the technical scheme, the portable phase-change heat storage and supply device has at least one or a part of the following beneficial effects:
(1) The electric heating device is strong in use flexibility, light, small and exquisite, portable, suitable for various mobile application environments and places, and particularly suitable for heating of electric automobiles.
(2) The heat storage device has a wide application range, adopts a cold air and hot air premixing air distribution mode, and can be suitable for working condition environments with different temperatures, different heat demands and the like by adjusting the cold and hot air quantity.
(3) The energy storage density is high, and compared with the conventional heat storage material, the phase change heat storage material is adopted, so that the heat storage density is higher; the device can adopt the high-temperature phase change material as the heat storage material by adopting a cold air and hot air premixing air distribution mode, so that the selection range of the phase change material is enlarged, and the phase change material with high energy storage density can be selected; on the other hand, by increasing the heat storage temperature, sensible heat storage can be performed while phase change heat storage, so that the complementation of the sensible heat storage and the latent heat storage is realized, and the heat storage capacity and the energy storage density of the device are further improved.
(4) The energy storage cost is low, and compared with the battery electricity storage of the mobile energy utilization scene such as an electric automobile, the phase change heat storage cost is greatly reduced.
(5) The energy storage efficiency is high, the efficiency of heating erythritol is close to hundred percent, and the efficiency of the heat storage process is more than 90 percent.
(6) The energy-saving effect is good, hot air is obtained by directly heating the phase-change heat storage material, warm air is obtained by radiating and preheating cold air through the recovery device, the radiating capacity of the device can be reduced, and the consumption is further controlled.
Drawings
Fig. 1 is a schematic diagram of the composition and principle of a portable phase-change heat storage and supply device according to an embodiment of the disclosure.
Fig. 2 is a schematic cross-sectional view of a portable phase-change heat storage and supply device according to an embodiment of the present disclosure.
Detailed Description
The utility model provides a portable phase change heat accumulation heating device, portable phase change heat accumulation heating device is based on phase change heat accumulation material, and erythritol has advantages such as heat storage density height, safety, pollution-free and with low costs as first-choice heat accumulation material. The device is filled with erythritol; when heat is stored, the device is set to a heat storage mode, and the device heats erythritol to a set temperature in an electric heating mode according to a built-in program; when there is a heat supply demand, the heat supply temperature and air quantity are set, the device sucks external cold air into the device through the fan according to the built-in program and respectively inputs the cold air channel and the hot air channel of the device according to the demand, the cold air and the hot air are respectively formed by heating the surface waste heat of the inner tube surface of the device and the high-temperature erythritol, and the proportion of the cold air and the hot air is adjusted by adjusting the air distribution rate of the fan so as to mix the cold air and the hot air into warm air with proper temperature and air quantity to be externally supplied.
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
In an embodiment of the present disclosure, there is provided a portable phase-change heat storage and supply device, as shown in fig. 1, including:
a main body, which is integrally cylindrical and comprises:
the inner pipe body is hollow and tubular, and phase-change heat storage materials are filled in the inner pipe body;
the heating body is uniformly arranged along the axial direction inside the tube body and is used for heating the phase change heat storage material inside the tube body after being electrified;
the inner hot air duct is axially arranged along the pipe body and is used for heating air circulating inside;
the first heat insulation layer is coaxially arranged outside the inner pipe body with the inner pipe body, and a space between the outer wall of the inner pipe body and the first heat insulation layer is used as an external hot air channel;
the outer pipe body and the inner pipe body are coaxially arranged outside the first heat insulation layer, and a cool air duct is arranged between the pipe wall of the outer pipe body and the first heat insulation layer;
and the second heat insulation layer is wrapped outside the outer tube body.
The fan is arranged at one end of the main body and is used for sucking external air into the main body and respectively flowing through the hot air duct and the cold air duct, and the other end of the main body is provided with an air outlet, so that the air outlet can realize the mixing of cold air and hot air, and the output of warm air with proper temperature is completed;
the included angle between the axis of the inner pipe body and the horizontal plane is 0-90 degrees;
the cross section of the shape of the inner pipe body is circular, elliptical, polygonal or a combination of the above patterns;
the phase-change heat storage material can be an inorganic phase-change heat storage material, an organic phase-change heat storage material and a mixed phase-change heat storage material;
the inorganic phase-change heat storage material comprises: crystalline hydrated salts, molten salts, metals, water, and the like;
the organic phase-change heat storage material comprises: paraffin, fatty acid, polyol, esters, etc.;
the temperature of the phase-change heat storage material is as follows: 30-500 ℃;
the heating body includes: heating rod, heating plate, heater strip.
When the heating body is a heating wire, the heating body is spiral, so that the heating efficiency is increased;
when the heating body is a heating rod, the heating body is arranged in the inner pipe body;
when the heating body is a heating sheet, the heating body is arranged inside, outside or on the wall surface of the inner pipe body;
the heating body can be replaced by a solar heating device and a fluid heating device;
the external hot air duct and the internal hot air duct are not required at the same time, but at least one of the external hot air duct and the internal hot air duct is arranged;
the inner pipe body, the heating rod, the heating plate, the external hot air duct, the internal hot air duct and the cool air duct are provided with structures for enhancing heat exchange, such as fins, threads, bends, micro-channels, heat pipes and the like;
the first heat insulation layer and the second heat insulation layer can be solid heat insulation layers, gas heat insulation layers, vacuum heat insulation layers and the like;
the cross section of the main body is circular, elliptical, polygonal or a combination of the above patterns;
the number of the fans is 1-10, and the fans are respectively arranged at the inlets of the cool air channel and the hot air channel according to the requirement;
the inner hot air duct and the inner pipe body are made of metal materials or temperature-resistant nonmetallic materials.
Working principle: when the portable phase-change heat storage and supply device stores heat, the internal heating body heats the phase-change heat storage material in the inner pipe body to heat and change phase until reaching the set temperature; the portable phase-change heat storage and supply device can be carried to environments with heat supply requirements after heat storage, such as in a car, a tent for camping in the open air, a house and the like; when the portable phase-change heat storage and supply device supplies heat, the fan transmits part of ambient cold air into the internal hot air duct and/or the external hot air duct pipeline, and the other part of ambient cold air is transmitted into the cold air duct, wherein the cold air transmitted into the internal (external) hot air duct exchanges heat with the high-temperature phase-change heat storage material to become high-temperature hot air; after cold air flows through the cool air duct, the temperature is raised to a certain extent; the high-temperature hot air is mixed with cool air output from the cool air duct at the air outlet, warm air with proper temperature is formed and then is discharged from the air outlet, and the high-temperature hot air is circulated in such a way, so that the temperature in the environment is gradually increased to the set temperature and maintained.
The hot air temperature is more than the warm air temperature is more than the cool air temperature in the present disclosure;
thus, embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It should be noted that, in the drawings or the text of the specification, implementations not shown or described are all forms known to those of ordinary skill in the art, and not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments, and may be simply modified or replaced by those of ordinary skill in the art.
From the above description, it should be clear to a person skilled in the art that the portable phase change heat storage and supply device of the present disclosure.
In summary, the present disclosure provides a portable phase-change heat storage and supply device, which is based on a phase-change heat storage material, such as erythritol, and has the advantages of high heat storage capacity, safety, low cost, and the like as a preferred heat storage material. After erythritol is stored in the device, the erythritol is charged with heat to enable the temperature of the erythritol to reach a set temperature, when a user needs to increase the temperature of the surrounding environment, a switch is turned on, a fan can suck cold air in the environment into the device, then the cold air respectively enters a hot air duct and a cold air duct to be heated to form hot air and cold air, then warm air with proper temperature is mixed at an air outlet to enter the environment, and the temperature in the environment gradually rises to proper temperature by circulation.
It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.
And the shapes and dimensions of the various elements in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Unless otherwise known, numerical parameters in this specification and the appended claims are approximations that may vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". In general, the meaning of expression is meant to include a variation of + -10% in some embodiments, a variation of + -5% in some embodiments, a variation of + -1% in some embodiments, and a variation of + -0.5% in some embodiments by a particular amount.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the description and the claims to modify a corresponding element does not by itself connote any ordinal number of elements or the order of manufacturing or use of the ordinal numbers in a particular claim, merely for enabling an element having a particular name to be clearly distinguished from another element having the same name.
Furthermore, unless specifically described or steps must occur in sequence, the order of the above steps is not limited to the list above and may be changed or rearranged according to the desired design. In addition, the above embodiments may be mixed with each other or other embodiments based on design and reliability, i.e. the technical features of the different embodiments may be freely combined to form more embodiments.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also, in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
Similarly, it should be appreciated that in the above description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
While the foregoing embodiments have been described in some detail for purposes of clarity of understanding, it will be understood that the foregoing embodiments are merely illustrative of the invention and are not intended to limit the invention, and that any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (10)
1. A portable phase change heat storage and supply device comprising:
a main body, which is integrally cylindrical and comprises:
the inner pipe body is hollow and tubular, and phase-change heat storage materials are filled in the inner pipe body;
the heating body is uniformly arranged along the axial direction inside the inner tube body and is used for heating the phase-change heat storage material inside the tube body;
the inner hot air duct is axially arranged along the pipe body and is used for heating air circulating inside;
the first heat insulation layer is coaxially arranged outside the inner pipe body with the inner pipe body;
the outer pipe body and the inner pipe body are coaxially arranged outside the first heat insulation layer, and a cool air duct is arranged between the pipe wall of the outer pipe body and the first heat insulation layer; and
the second heat insulation layer is wrapped outside the outer tube;
the fan is arranged at one end of the main body and used for sucking external air into the main body and respectively conveying the external air into the internal hot air duct and the cold air duct; the other end of the main body is an air outlet, so that the mixing of cool air and hot air is realized, and the output of warm air with proper temperature is completed.
2. The portable phase-change heat storage and supply device of claim 1, the body further comprising:
and the external hot air duct is arranged between the outer wall of the inner pipe body and the first heat insulation layer and is used for heating air flowing through the surface of the inner pipe body.
3. The portable phase-change heat storage and supply device of claim 1, the phase-change heat storage material comprising: crystalline hydrated salts, molten salts, liquid metals.
4. The portable phase-change heat storage and supply device of claim 1, the phase-change heat storage material comprising: at least one of paraffin, fatty acid, polyol or ester.
5. The portable phase-change heat storage and supply device according to claim 1, the heating body comprising: at least one of a fluid heating device, a heating wire, a heating rod or a heating sheet.
6. The portable phase-change heat storage and supply device according to claim 1, wherein the cross section of the main body is circular, elliptical or polygonal.
7. The portable phase-change heat storage and supply device of claim 1, the phase-change heat storage material having a phase-change temperature of: 30-500 ℃.
8. The portable phase-change heat storage and supply device according to claim 2, wherein the inner pipe body, the outer hot air duct, the inner hot air duct and the cool air duct are provided with a structure for enhancing heat exchange, comprising: fins, threads, bends, micro-channels, heat pipes.
9. The portable phase change heat storage and supply device of claim 1, the type of the first or second insulating layer comprising: a solid insulating layer, a gas insulating layer or a vacuum insulating layer.
10. The portable phase-change heat storage and supply device according to claim 1, wherein the number of the fans is 1-10.
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| CN201910405073.1A CN110001355B (en) | 2019-05-17 | 2019-05-17 | Portable phase-change heat storage and supply device |
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| CN201910405073.1A CN110001355B (en) | 2019-05-17 | 2019-05-17 | Portable phase-change heat storage and supply device |
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| CN110001355B true CN110001355B (en) | 2023-12-15 |
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| CN210680321U (en) * | 2019-05-17 | 2020-06-05 | 天津大学 | Portable phase-change heat storage and supply device |
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| CN2147474Y (en) * | 1992-09-16 | 1993-11-24 | 孙宇光 | Light contact type warmer |
| CN104296576A (en) * | 2014-10-09 | 2015-01-21 | 天津大学 | Phase-change material energy storage heat exchange pipe for buildings |
| CN106016788A (en) * | 2016-07-11 | 2016-10-12 | 江苏爱能森科技有限公司 | Temperature control system and control method thereof |
| CN208312728U (en) * | 2018-02-05 | 2019-01-01 | 楚雄师范学院 | A kind of thermal storage type vacuum tube solar thermal collection system |
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| CN110001355A (en) | 2019-07-12 |
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