WO2012071781A1 - 全湿型塑料吸热板、平板型集热器、平板型太阳热水器和塑料热合器 - Google Patents

全湿型塑料吸热板、平板型集热器、平板型太阳热水器和塑料热合器 Download PDF

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Publication number
WO2012071781A1
WO2012071781A1 PCT/CN2011/001871 CN2011001871W WO2012071781A1 WO 2012071781 A1 WO2012071781 A1 WO 2012071781A1 CN 2011001871 W CN2011001871 W CN 2011001871W WO 2012071781 A1 WO2012071781 A1 WO 2012071781A1
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WIPO (PCT)
Prior art keywords
heat
plastic
heating wire
heat absorbing
absorbing plate
Prior art date
Application number
PCT/CN2011/001871
Other languages
English (en)
French (fr)
Inventor
李建全
Original Assignee
Li Jianquan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Li Jianquan filed Critical Li Jianquan
Priority to CN201180056191.8A priority Critical patent/CN103314263B/zh
Publication of WO2012071781A1 publication Critical patent/WO2012071781A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
    • F24S10/501—Solar heat collectors using working fluids the working fluids being conveyed between plates having conduits of plastic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Definitions

  • the present invention relates to a flat type solar water heater in the field of solar energy utilization devices, and a main component thereof (a flat type collector) , and the heat absorber inside it (whole-wet plastic heat absorbing plate), and its production equipment (plastic heat sealer).
  • a flat type solar water heater is composed of a hot water storage tank, an upper circulation pipe, a lower circulation pipe and a flat type collector.
  • the flat type collector is composed of a top transparent incubator and a flat type heat absorbing body (also called a heat absorbing plate, commonly known as a core). "On the flat-plate type heat absorbing body, a discharge pipe and a header are usually arranged.
  • the discharge pipe refers to a component in which the heat absorbing body is longitudinally arranged and constitutes a fluid passage; the header means that the upper and lower ends of the heat absorbing body are laterally connected to the plurality of rows Tube and constitutes the component of the fluid passage" (taken from “Solar Water Heater and System”).
  • "The use of new energy and renewable energy” states: "The all-wet type heat absorbing plate has no fluid-free fins, which makes up for the shortage of heat-absorbing plates made of materials with a small thermal conductivity, and the thermal conductivity is small. The material used to make the heat absorbing plate must use the all-wet structural core.”
  • thermocompression bonding line between the tubes of the heat absorbing plate that is, the heat sealing line
  • the thermocompression bonding line between the tubes of the heat absorbing plate cannot be made wider, otherwise a small fin that does not pass through the fluid is formed, although it is more than a tube plate type.
  • the fins of the heat absorbing plate are much smaller, and the full wet type mechanism is not fully realized.
  • the second is to achieve automatic insulation, at least to withstand more than 1 m of high water pressure, then the heat sealing line between the tubes should be wide, otherwise its end will be torn and torn due to pressure.
  • the plastic heat sealer consists of a narrow (fine) electric heating wire (usually a round wire) or a wide electric heating wire (generally a flat wire) and a backing plate and a non-stick cloth. Its heating wire is usually in a straight state, so each processed A plastic heat sealing line can only be wide.
  • a first object of the present invention is to provide an improved all-wet plastic heat absorbing plate having no fluid-free fins between the rows of tubes; the end of the heat-sealing line between the tubes can be added Great ability to withstand water pressure.
  • a second object of the present invention is to provide an improved flat type heat collector whose heat absorbing body is the all wet type plastic heat absorbing board of the present invention.
  • a third object of the present invention is to provide an improved flat type solar water heater whose heat absorbing body is the all wet type plastic heat absorbing plate of the present invention.
  • a fourth object of the present invention is to provide an improved plastic heat seal which is capable of heat sealing out the narrow section of the middle end of the heat sealing line.
  • the heat sealing line between the pipes is narrow in the middle section. Because the middle part is narrow (excluding the width), there is no fin that does not pass the fluid; the so-called end section is wide, the purpose is to widen the end of the tube, so that the end can withstand the water pressure capacity, so here The last paragraph is the end. If it is not the end width, only the end is wide, it will produce a new narrow end, and it is difficult to withstand the water pressure.
  • the flat type heat collector of the present invention comprises a top transparent heat insulating box and a flat type heat absorbing body therein, and the heat absorbing body is a full wet type plastic heat absorbing plate of the present invention.
  • the flat type solar water heater of the invention comprises a hot water storage tank, an upper circulation pipe, a lower circulation pipe, a top transparent heat preservation box and a flat type heat absorbing body therein, wherein the heat absorbing body adopts the whole wetness of the invention Type plastic heat absorbing plate.
  • the plastic heat exchanger of the invention consists of a heating wire and a backing plate, and an insulating heat-insulating heat-insulating sheet is arranged on the backing plate; the heating wire needs to give the plastic heat-sealed portion a narrow section at the middle end, but a narrow electric heating wire in the middle section It is close to the end of the wide electric heating wire and is not close to the top surface of the insulating heat-resistant heat-insulating sheet; the heating wire does not need to heat the plastic part under the insulating heat-resistant heat-insulating sheet; the middle-section narrow electric heating wire is not required by the two ends.
  • the reverse tension of the heat-sealed portion is stretched.
  • the purpose of the middle section of the narrow electric heating wire is that it is close to the end of the wide electric heating wire.
  • the purpose is to: heat the wide and narrow different heat sealing lines because they are not touching each other; because the adjacent is very close (because there is a wire between the heating wire and the plastic)
  • the non-stick cloth is separated by the diffusion of the plastic with a certain thickness, so that the heat sealing surface of the plastic will be larger than the heating contact surface of the heating wire), so that the wide and narrow heat sealing lines are connected to the narrow section of the middle section.
  • the all-wet type plastic heat absorbing plate of the invention can fully realize the all-wet structure because there is no fluid-free fin between the pipes, thereby not only increasing the heat absorbing area of the heat-carrying fluid, but also improving the heat collecting effect, and Can extend the life of the heat absorbing plate. Due to poor thermal conductivity of plastics, it is not resistant to high temperatures. If there are fins, the temperature will not drop.
  • the end of the heat sealing line between the tubes is wide, thus widening the end, it increases The end is subjected to water pressure capacity, can adapt to the hot water tank of the flat type solar water heater at a higher position, increase the natural circulation flow rate, and ensure the flat type solar collector and the flat type solar water heater adopting the all-wet type plastic heat absorption board.
  • the realization can effectively enjoy solar hot water at low cost.
  • the plastic heat sealer of the invention has the middle and the last stage heat sealing electric heating wire of the narrow section of the middle end of the plastic heat sealing line on the same plastic heat sealer, which can heat the heat sealing line of the narrow section at the middle end.
  • the prior art plastic heat sealer must be heat-sealed multiple times with a plurality of plastic heat sealers of wide and narrow electric heating wires to form a heat sealing line with a narrow section at the middle end.
  • Figure 1 is a schematic view showing the structure of a prior art all-wet type plastic heat absorbing plate.
  • FIG. 2 is a schematic view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the prior art.
  • Fig. 3 is a schematic view showing the structure of a prior art (wide electric heating wire) plastic heat sealer.
  • Fig. 4 is a schematic view showing the structure of a prior art (narrow electric heating wire) plastic heat sealer.
  • Fig. 5 is a schematic view showing the structure of a all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 6 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 7 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 8 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 9 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 10 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Figure n is a schematic view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 12 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Figure 13 is a schematic view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Fig. 14 is a view showing the shape of a heat sealing line between the discharge pipes of the all-wet type plastic heat absorbing plate of the present invention.
  • Figure 15 is a schematic view showing the structure of a plastic heat sealer of the present invention.
  • Figure 16 is a schematic view showing the structure of a plastic heat sealer of the present invention.
  • Figure 17 is a schematic view showing the structure of a plastic heat sealer of the present invention.
  • the all-wet type plastic heat absorbing plate of the present invention is composed of a pipe 1 and a header 2, and a heat sealing line 3 is disposed between the pipes 1.
  • the difference from the prior art is: the middle section of the heat sealing line 3 between the pipes 1 is narrow and the width is 5 wide. In the middle section 4, there is no fin that does not pass the fluid; the width of the end section 5 widens the end 6, and the end 6 can be increased in water pressure capacity.
  • Embodiment 1 Its plastic is made of a plastic film; one or more plastic films are added together at the end of the heat sealing line 3 between the tubes 1 and the outside of the header 2.
  • the addition of one or more layers of plastic film is to increase the water pressure capacity of the end 6 , but the thicker thickness will result in a lowering of the heat collecting effect, and the heat collecting of the heat absorbing plate is basically mainly at the pipe 1 .
  • the header 2 also adding one or more layers of plastic film together with the last section 5? This is because each plastic film of one or more layers of plastic film is subjected to the same pressure as the header so that each layer of the plastic film at the end 6 of the end portion 5 of the co-heating is subjected to water pressure.
  • Embodiment 4 This is a preferred technical solution of Embodiment 4.
  • the width of the end section 5 of the heat sealing line 3 between the rows of tubes 1 is 6 to 7. 5 legs, and the length of the end section 5 (in the direction of the tube) is not greater than the width.
  • the broken line in the figure indicates the portion of the heating wire below the insulating heat-resistant heat insulating sheet 7.
  • the plastic heat sealer of the present invention is composed of a heating wire and a backing plate. The difference from the prior art is: there is an insulating heat-resistant heat insulating sheet 7 on the backing plate; the heating wire needs to give the plastic heat-bonded portion a narrow section of the middle section.
  • the narrow electric heating wire is not close to the end of the wide electric heating wire, and is on the top surface of the insulating heat-resistant heat insulating sheet 7; the heating wire does not need to be heat-sealed to the plastic heat insulating sheet 7 Below; the middle narrow electric heating wire is stretched by the reverse pulling force of the parts where the two ends do not need to be heat sealed. It is also possible to stretch the heating wire of the heat sealing line of the header line by the reverse pulling force of the portion where the two ends do not need to be heat sealed.
  • the plastic heat sealer of this embodiment can heat the heat sealing line of Fig. 6.
  • the dotted line in the figure indicates the portion of the heating wire below the insulating heat-resistant heat insulating sheet 7.
  • the heating wire needs to be bent back to the end of the plastic heat sealing, and the middle section extends into the last section and is out of contact with the last section (nearly adjacent and does not touch each other).
  • the plastic heat sealer of this embodiment can heat-seal the heat sealing line of Fig. 9 or Fig. 11 or Fig. 6.
  • the plastic heat sealer of this embodiment can heat-seal the heat sealing line of Fig. 13 or Fig. 14 or Fig. 7, but is generally mainly the heat sealing line of Fig. 14.
  • the all-wet type plastic heat absorbing plate, the flat plate type heat collector, and the flat type solar water heater of the present invention are all characterized in that the heat sealing line between the pipes is narrow at the middle end. Therefore, the structure is particularly simple and can be realized only by the plastic heat exchanger of the present invention.
  • the plastic heat exchanger of the present invention is also a very simple production equipment.
  • the invention can be implemented with ultra low material (plastic) cost and extremely simple processing (heat sealing).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

说 明 书 全湿型塑料吸热板、 平板型集热器、 平板型太阳热水器和塑料热合器 技术领域 本发明涉及太阳能利用装置领域的平板型太阳热水器、 和它的主要部件 （平板型集热 器）、 和其里面的吸热体 （全湿型塑料吸热板）、 及其生产设备 （塑料热合器）。
背景技术 从《太阳热水器及系统》和 《新能源和可再生能源的利用》 中可知： 平板型太阳热水 器， 由蓄热水箱、 上循环管、 下循环管和平板型集热器组成， 该平板型集热器由顶透明的保温箱体和其 里面的平板型吸热体（又称吸热板，俗称板芯）组成。 "在平板形状的吸热体上，通常布置有排管和集管。 排管是指吸热体纵向排列并构成流体通道的部件； 集管是指吸热体上下两端横向连接若干根排管并构成 流体通道的部件"（摘自《太阳热水器及系统》）。《新能源和可再生能源的利用》中指出： "全湿型吸热板 没有不通流体的翅片， 弥补了使用导热系数较小的材料制成吸热板之不足， 凡是用导热系数较小的材料 制作吸热板， 必须采用全湿型结构板芯。" 中国专利申请 93216022.0中的塑料薄膜吸热板和 《新能源和 可再生能源的利用》 中的全湿型塑料吸热板， 都存在两个问题： 一是要实现全湿型结构， 吸热板的排管 之间的热压粘合线即热合线不能做宽了， 否则形成不通流体的小翅片， 虽然它比管板式吸热板的翅片要 小很多， 也未能充分实现全湿型机构。 二是要实现自动保温， 至少要承受 l m多高水压， 那么排管之间 的热合线要宽才行， 否则它的末端会因承压被撕开扯烂的。 这两个问题是相矛盾的， 是由塑料热合器加 工的热合线的形状决定的。 塑料热合器由窄 (细)电热丝 （一般是圆丝） 或宽电热丝 （一般是扁丝） 和垫 板及不粘布组成， 它的电热丝通常呈整体绷直状态， 因此加工的每一根塑料热合线， 只能是齐宽的。
发明内容 本发明的第一个目的是提供一种改进的全湿型塑料吸热板， 它的排管之间没有不通流 体的翅片； 它的排管之间的热合线的末端， 能加大承受水压的能力。 本发明的第二个目的是提供一种改 进的平板型集热器， 它的吸热体是本发明的全湿型塑料吸热板。 本发明的第三个目的是提供一种改进的 平板型太阳热水器， 它的吸热体是本发明的全湿型塑料吸热板。 本发明的第四个目的是提供一种改进的 塑料热合器， 它能热合出中段窄末段宽的热合线。
本发明的全湿型塑料吸热板， 它的排管之间的热合线呈中段窄末段宽。 排管之间的热合线因中段窄 (不计宽度）， 就没有不通流体的翅片了； 所谓末段宽， 目的是使它的末端加宽， 就能加大末端承受水压 能力， 因此这里的末段是包括末端的。 如果不是末段宽， 只是末端宽的话， 将产生新的窄末端， 也难以 承受水压。
本发明的平板型集热器， 由顶透明的保温箱体和其里面的平板型吸热体组成， 该吸热体采用的是本 发明的全湿型塑料吸热板。
本发明的平板型太阳热水器， 包括贮热水箱、 上循环管、 下循环管、 顶透明的保温箱体和其里面的 平板型吸热体， 该吸热体采用的是本发明的全湿型塑料吸热板。
本发明的塑料热和器， 由电热丝和垫板组成， 在垫板上面还有绝缘耐热隔热片； 电热丝需给塑料热 合的部位呈中段窄末段宽， 但其中段窄电热丝与末段宽电热丝相邻很近不相碰， 在绝缘耐热隔热片顶面 上； 电热丝无需给塑料热合的部位在绝缘耐热隔热片下面； 中段窄电热丝受其两头无需热合的部位之反 向拉力而绷着。 中段窄电热丝与末段宽电热丝相邻很近不相碰的目的是： 因为不相碰才能热合出宽、 窄 不同的热合线； 因为相邻很近（由于电热丝与塑料之间有不粘布相隔再加上塑料有一定的厚度的辐射扩 散作用导致塑料的热合面会大于电热丝发热接触面） 才能使宽、 窄不同的热合线相连成中段窄末段宽。
本发明的全湿型塑料吸热板， 由于它的排管之间没有不通流体的翅片， 能充分实现全湿型结构， 不 但能增加载热流体的吸热面积， 提高集热效果， 而且能延长吸热板的使用寿命。 因塑料导热不良， 又不 耐高温， 若有翅片则高温难降。 又由于它的排管之间的热合线的末段宽， 从而加宽了其末端， 就加大了 末端承受水压能力， 能适应平板型太阳热水器的贮热水箱在较高的位置， 加大自然循环流速， 保证了采 用全湿型塑料吸热板之平板型集热器、 平板型太阳热水器的实现， 能以低成本高效享用太阳能热水。 本 发明的塑料热合器， 它给中段窄末段宽的塑料热合线的中、 末段热合之电热丝在同一塑料热合器上， 能 热合出中段窄末段宽的热合线。 而现有技术的塑料热合器， 必须用宽、 窄电热丝的多个塑料热合器经多 次热合， 才能组合成中段窄末段宽的热合线。
附图概述 图 1是现有技术的全湿型塑料吸热板的结构示意图。
图 2是现有技术的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 3是现有技术的 （宽电热丝之）塑料热合器的结构示意图。
图 4是现有技术的 （窄电热丝之）塑料热合器的结构示意图。
图 5是本发明的全湿型塑料吸热板的结构示意图。
图 6是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 7是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 8是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 9是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 10是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 n是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 12是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 13是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 14是本发明的全湿型塑料吸热板的排管之间的热合线的形状示意图。
图 15是本发明的塑料热合器的结构示意图。
图 16是本发明的塑料热合器的结构示意图。
图 17是本发明的塑料热合器的结构示意图。
实施方式 下面结合附图详细说明本发明的 10个实施例。
实施例 1
如图 5 7所示， 本发明的全湿型塑料吸热板， 由排管 1和集管 2组成， 排管 1之间是热合线 3。 与 现有技术不同的是： 排管 1之间的热合线 3的中段 4窄末段 5宽。 中段 4窄就没有不通流体的翅片了； 末段 5宽就加宽了末端 6， 就能加大末端 6承受水压能力。
实施例 2
这是实施例〗的优选技术方案。 所述的排管 1之间的热合线 3的末段 5及集管 2邻末端 6—带的塑 料厚度大一些， 以加大末端 6的承压力。
实施例 3
这是实施例 1的优选技术方案。 它的塑料采用的是塑料薄膜； 在排管 1之间的热合线 3的末段 5和 集管 2的外面共同增加一层或多层塑料薄膜。增加一层或多层塑料薄膜是为了加大末端 6承受水压能力， 但厚度大了会导致集热效果降低， 而吸热板的集热基本上主要是在排管 1部位。 为什么集管 2也与末段 5在外面共同增加一层或多层塑料薄膜呢？这是因为增加一层或多层塑料薄膜的每一层塑料薄膜要与集 管受到同样的压力， 才能使共同热合之末段 5之末端 6处的每一层塑料薄膜共同承受水压。
实施例 4
这是实施例 1或 2或 3的优选技术方案。 所述的排管 1之间的热合线 3的末段 5的宽度是排管 1中 段周长的五分之一至四分之一， 且为 5 8 说 明 书 实施例 5
这是实施例 4的优选技术方案。所述的排管 1之间的热合线 3的末段 5的宽度为 6〜7. 5腿， 末段 5 的长 (顺着排管方向)度不大于宽度。
实施例 6
如图 8〜10所示， 这是实施例 1或 2或 3的优选技术方案。 所述的排管 1之间的热合线 3的末段 5 呈回折弯之形。 那么中段 4与末段 5的任何位置相连即可； 如果热合线 3较粗， 中段 4伸入末段 5 , 可 与末段 5脱节。
实施例 7
如图 11〜14所示，这是实施例 6的优选技术方案。所述的拌管 1之间的热合线 3的末段 5之回折弯 之形是封口的。 封口的目的是减少承压漏水的机会， 且末段 5可以是窄热合线经回折弯而变宽的。
实施例 8
如图 15所示， 图中虚线表示的是电热丝在绝缘耐热隔热片 7下面的部分。本发明的塑料热合器， 由 电热丝和垫板组成， 与现有技术不同的是： 在垫板上面还有绝缘耐热隔热片 7; 电热丝需给塑料热合的 部位呈中段窄末段宽，但其中段窄电热丝与末段宽电热丝相邻很近不相碰，在绝缘耐热隔热片 7顶面上； 电热丝无需给塑料热合的部位在绝缘耐热隔热片 7下面； 中段窄电热丝受其两头无需热合的部位之反向 拉力而绷着。 同样还可以将集管边线之热合线之电热丝受其两头无需热合的部位之反向拉力而绷着。 本 实施例之塑料热合器， 可热合出图 6之热合线。
实施例 9
如图 16所示，是实施例 8的优选技术方案。图中虚线表示的是电热丝在绝缘耐热隔热片 7下面的部 分。 所述的电热丝需给塑料热合的末段呈回折弯之形， 中段伸入末段且与末段脱节 (相邻很近不相碰)。 本实施例之塑料热合器， 可热合出图 9或图 11或图 6之热合线。
实施例 10
如图 17所示，是实施例 9的优选技术方案。图中虚线表示的是电热丝在绝缘耐热隔热片 7下面的部 分。 所述的电热丝需给塑料热合的部位均是窄电热丝， 它的中段与末段之里段两边相邻很近不相碰。 本 实施例之塑料热合器， 可热合出图 13或图 14或图 7之热合线， 但一般主要是图 14之热合线。
工业实用性 本发明的全湿型塑料吸热板、 平板型集热器和平板型太阳热水器， 它们的发明点均 在于排管之间的热合线呈中段窄末段宽。 所以结构特别简单， 仅由本发明的塑料热和器即可实现。 而本 发明的塑料热和器， 也是非常简单之生产设备。 本发明只需超低的材料 (塑料)成本和极其简单的加工工 艺 （热合） 即可实施。

Claims

1.全湿型塑料吸热板， 由排管 ω和集管 (2)组成， 排管 (1)之间是热合线 (3)， 其特征是： 排管 (1)之间的 热合线 (3)的中段 (4)窄末段 (5)宽。
2.如权利要求 1所述的全湿型塑料吸热板， 其特征是： 所述的排管 (1)之间的热合线 (¾的末段 (5)及集 管 (2)邻末端 (6)—带的塑料厚度大一些。
3.如权利要求】所述的全湿型塑料吸热板， 其特征是： 它的塑料采用的是塑料薄膜； 在排管 (1)之间 的热合线 (3)的末段 (5)和集管 (2)的外面共同增加一层或多层塑料薄膜。
4.如权利要求 1或 2或 3所述的全湿型塑料吸热板， 其特征是： 所述的排管 (1)之间的热合线 (¾的末 段 (5)的宽度是排管 (1)中段周长的五分之一至四分之一， 且为 5〜8
5.如权利要求 4所述的全湿型塑料吸热板， 其特征是： 所述的排管 (1)之间的热合线 ( 的末段 的宽 度为 6〜7. 5 末段 (5)的长度不大于宽度。
6.如权利要求 1或 2或 3所述的全湿型塑料吸热板， 其特征是： 所述的排管 (1)之间的热合线 (3)的末 段 (6)呈回折弯之形。
7.如权利要求 6所述的全湿型塑料吸热板， 其特征是： 所述的排管 (1)之间的热合线 (3)的末段 (5)之回 折弯之形是封口的。
8.—种平板型集热器， 由顶透光的保温箱体， 和其里面的平板型吸热体组成， 其特征是： 该平板型 吸热体是权利要求 1〜7中所述的任何一种全湿型塑料吸热板。
9.一种平板型太阳热水器， 由蓄热水箱、 上循环管、 下循环管、 顶透光的保温箱体和其里面的平板 型吸热体组成， 其特征是： 该平板型吸热体是权利要求 1〜7中所述的任何一种全湿型塑料吸热扳。
10.—种塑料热合器， 由电热丝和垫板组成， 其特征是： 在垫板上面还有绝缘耐热隔热片 (7); 电热丝 需给塑料热合的部位呈中段窄末段宽， 但其中段窄电热丝与末段宽电热丝相邻很近不相碰， 在绝缘耐热 隔热片 (7)顶面上； 电热丝无需给塑料热合的部位在绝缘耐热隔热片 (?)下面； 中段窄电热丝受其两头无需 热合的部位之反向拉力而绷着。
11.如权利要求 10所述的塑料热合器， 其特征是： 所述的电热丝需给塑料热合的末段呈回折弯之形， 中段伸入末段且与末段脱节。
12.如权利要求 11所述的塑料热合器， 其特征是： 所述的电热丝需给塑料热合的部位均是窄电热丝， 它的中段与末段之里段两边相邻很近不相碰。
PCT/CN2011/001871 2010-12-01 2011-11-07 全湿型塑料吸热板、平板型集热器、平板型太阳热水器和塑料热合器 WO2012071781A1 (zh)

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