WO2011064839A1 - 熱交換器 - Google Patents
熱交換器 Download PDFInfo
- Publication number
- WO2011064839A1 WO2011064839A1 PCT/JP2009/069815 JP2009069815W WO2011064839A1 WO 2011064839 A1 WO2011064839 A1 WO 2011064839A1 JP 2009069815 W JP2009069815 W JP 2009069815W WO 2011064839 A1 WO2011064839 A1 WO 2011064839A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat transfer
- transfer tube
- heat
- heat exchanger
- tube
- Prior art date
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Classifications
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- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
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- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
- F28D7/0016—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being bent
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- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
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- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
- F28F2275/125—Fastening; Joining by methods involving deformation of the elements by bringing elements together and expanding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
- F28F2275/127—Fastening; Joining by methods involving deformation of the elements by shrinking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
Definitions
- the present invention relates to a heat exchanger, and more particularly to a heat exchanger such as a heater / cooler that can be used for a process in which the flow rate of a fluid to be processed is small, particularly a chemical experiment.
- the performance generally required for a heat exchanger is heat exchange performance, corrosion resistance, pressure resistance and robustness, cleanability, downsizing, etc., and low cost is required.
- conventional heat exchangers mainly use multi-tube type, double-pipe type, coil type, plate type, etc., and the structure is complex or difficult to miniaturize, expensive, cleaning
- drawbacks such as poor nature.
- a heat exchanger used for a small flow rate treatment, particularly a chemical experiment is generally a glass coil type or a glass double tube type.
- the heat exchange performance cannot be expected due to the low thermal conductivity of the glass itself, but it takes a lot of labor to clean the treated material adhering to the coil, and may not be able to clean completely.
- many heat exchangers must be prepared and the cost is high.
- there is a high risk of breakage and in particular, when distributing a treatment with risk, cost is also required for safety measures.
- a coiled heat transfer tube is arranged in a space formed between an inner cylinder and an outer cylinder, and the inside of the heat transfer tube is used as one flow path.
- a heat exchanger is known in which a coiled space sandwiched between the heat transfer tubes in the space is used as the other flow path, and efficient heat exchange is realized between one and the other fluid.
- the heat transfer tube is not fixed to both the outer peripheral surface of the inner cylinder and the inner peripheral surface of the outer cylinder, and the heat transfer tube is in a natural state. Stops being attached. For this reason, when the viscosity of the fluid is high, the heat transfer tube expands and contracts due to flow resistance or the like, and for example, the coiled pitch is not uniform and may be partially narrowed or clogged.
- an object of the present invention is to arrange a coiled heat transfer tube in a space formed between an inner cylinder and an outer cylinder, and the inside of the heat transfer tube as one flow path
- An object of the present invention is to improve a heat exchanger of a type in which a coiled space sandwiched between the heat transfer tubes serves as the other flow path, and heat exchange is performed between one and the other fluid.
- one object is to provide a heat exchanger in which the heat transfer tubes can be easily attached and detached, and the other purpose is to suppress changes in the flow path area due to deformation of the heat transfer tubes due to flow resistance or the like. Therefore, it is an object of the present invention to provide a heat exchanger that can achieve either of the two purposes.
- a more specific purpose is to provide a heat exchanger that is small and efficient in heat exchange and that allows the fluid to be processed to pass through small flow rate processing, especially various chemical experiments, at a lower cost than conventional products. Is an issue.
- the invention according to claim 1 of the present application is that a coiled heat transfer tube 1 is arranged in a space 7 formed between an inner tube 5 and an outer tube 6, and the heat transfer tube is arranged.
- 1 is one flow path
- the coiled space 4 sandwiched between the heat transfer tubes 1 in the space 7 is the other flow path
- heat exchange is performed between one and the other fluid.
- the heat transfer tube 1 is provided with a tension mechanism for maintaining an expansion / contraction force that acts to expand or contract the coiled diameter from the natural state, and the expansion / contraction force is applied to the heat transfer tube 1 by the tension mechanism.
- a heat exchanger characterized in that heat exchange is performed between one and the other fluid in a heated state.
- the heat transfer tube 1 is not fixed to both the outer peripheral surface of the inner tube 5 and the inner peripheral surface of the outer tube 6, and the heat transfer tube is formed by the tension mechanism.
- the coiled diameter of 1 is expanded or contracted from a natural state, and the heat transfer tube 1 is brought into close contact or pressure contact with the inner cylinder 5 or the outer cylinder 6 by the expansion or contraction.
- a heat exchanger according to 1 is provided.
- the axial load of the coil applied when the heat transfer tube 1 is displaced by 10% in the axial length of the coil relative to its natural state is 10 kg or less.
- a heat exchanger according to claim 1 or 2 is provided.
- the material of the heat transfer tube 1 is made of a metal such as stainless steel, hastelloy, inconel, titanium, copper or nickel; an acrylic resin such as ABS, polyethylene, polypropylene or PMMA; polycarbonate, PTFE or PFA.
- the invention according to claim 5 of the present application provides the heat exchanger according to claim 4, wherein an outer diameter of the heat transfer tube 1 is 28 mm or less.
- the coiled heat transfer tube 1 is arranged in a space 7 formed between the inner tube 5 and the outer tube 6, and the inside of the heat transfer tube 1 is connected to one flow path.
- the coiled heat transfer is performed.
- the heat tube 1 is elastically deformed from a natural state, the heat transfer tube 1 is in close contact or pressure contact with the inner tube 5 or the outer tube 6, and the heat transfer tube 1 is elastically deformed between one and the other fluid.
- a heat exchanger characterized in that heat exchange is performed.
- the heat exchanger according to the present invention maintains a state in which expansion / contraction force is applied to the heat transfer tube 1 by a tension mechanism in a use state, that is, at least during heat exchange. Therefore, a force is always applied to the heat transfer tube, and accordingly, even when the heat transfer tube is not in contact with the inner tube 5 or the outer tube 6, the heat transfer tube is not easily deformed due to flow resistance or the like, and the coiled heat transfer tube 1 Can alleviate uneven deformation. More preferably, even if the heat transfer tube 1 is not fixed to both the outer peripheral surface of the inner tube 5 and the inner peripheral surface of the outer tube 6, the heat transfer tube 1 is moved by the action of the tension mechanism.
- the coiled heat transfer tube 1 can be easily attached and detached. Specifically, in a free state, the heat transfer tube 1 is arranged in a state where an appropriate clearance is set between the inner cylinder 5 and the outer cylinder 6, and then in a tension state, the expansion / contraction force is generated to generate a coil shape. The heat transfer tube 1 is brought into contact with either the inner cylinder 5 or the outer cylinder 6, and the expansion / contraction force is maintained by a tension mechanism, thereby maintaining the contact state.
- a heat exchanger tube can be easily removed by canceling
- the expansion and contraction of the heat transfer tube due to the flow of the heat medium can be prevented, and the structure can be simplified as compared with the conventional product. Therefore, the number of manufacturing steps can be reduced, and thus the heat exchanger can be provided at a low cost. .
- (A) is structure explanatory drawing of the heat exchanger which concerns on embodiment of this invention, (B) is the same top view.
- (A) is structure explanatory drawing of the heat exchanger which concerns on other embodiment of this invention, (B) is the same top view.
- (A) is structure explanatory drawing of the heat exchanger which concerns on other embodiment of this invention, (B) is the same top view.
- (A) is principal part expansion explanatory drawing in the assembly
- (B) is principal part expansion explanatory drawing at the time of the assembly
- the heat exchanger has an inner cylinder 5 and an outer cylinder 6 whose side surfaces are substantially circular in cross section, and upper and lower ends thereof are closed by upper and lower closing portions 9 and 8.
- the inner cylinder 5 and the lower closing part 8 are integrated.
- the coiled heat transfer tube 1 is installed so as to be in close contact or pressure contact with at least one of the outer periphery of the inner cylinder 5 and the inner periphery of the outer cylinder 6. It can be connected to piping outside the heat exchanger through the portions 9 and 8. However, the heat transfer tube 1 is not fixed to both the outer peripheral surface of the inner cylinder 5 and the inner peripheral surface of the outer cylinder 6. Between the turns of the coiled heat transfer tube 1, a coiled space 4 having a predetermined interval surrounded by the upper and lower heat transfer tubes 1 and the inner and outer cylinders 5 and 6 having different turns is formed.
- the illustrated coiled heat transfer tube 1 and the inner and outer cylinders 5 and 6 are formed in a cylindrical shape having a uniform diameter in the vertical direction, they may be implemented as those having different diameters in the vertical direction, such as a truncated cone or an inverted truncated cone. it can.
- the heat transfer tube 1 is preferably made of a material that can expand and contract and has high durability such as corrosion resistance, pressure resistance, and robustness against the target fluid to be treated.
- metals such as stainless steel, hastelloy, inconel, titanium, copper, and nickel; acrylic resins such as ABS, polyethylene, polypropylene, and PMMA; fluorine-based resins such as polycarbonate, PTFE, and PFA; and epoxy resins.
- the coiled space 4 outside the heat transfer tube 1, in other words, the coiled space 4 between the heat transfer tube 1 and the heat transfer tube 1 is a space through which the heat medium 3 flows.
- the heating medium 3 enters and exits from a nozzle 10 provided in the upper and lower closing portions 9 and 8. Thereby, the heat medium 3 can be circulated through the space 7 and the coiled space 4.
- the fluid 2 to be treated is circulated in the upward direction (U direction) in FIG. 1 and the heat medium 3 is circulated in the downward direction (S direction). Both the fluid to be treated 2 and the heat medium 3 can prevent an increase in pressure loss, secure a large overall heat transfer coefficient, and can be performed efficiently and effectively. However, this does not prevent the two fluids from flowing in the same direction.
- the heat transfer tube 1 is assembled to the lower closing portion 8 and the inner cylinder 5 that are manufactured as an integral type.
- a smooth mounting operation can be performed by setting an appropriate clearance 4c between the inner cylinder 5 and the heat transfer tube 1 (see FIG. 4A).
- the heat transfer tube 1 is fixed to the lower closed portion 8. This fixing is performed with a tension mechanism 11.
- the tension mechanism 11 is for maintaining the expansion / contraction force that acts to expand or contract the coiled diameter of the heat transfer tube 1 from the natural state.
- the biting joint 11 is employed.
- Other embodiments include a method using a clamp, a saddle band, a strap, a bracket, or the like, and may be fixed by welding or adhesion (not shown).
- the tension mechanism 11 only maintains the expansion / contraction force, and other means may be used to generate the expansion / contraction force. In the case of the bite joint 11, the expansion / contraction force is generated and the expansion / contraction force is generated. The power is maintained.
- the coiled diameter of the heat transfer tube 1 is reduced by pulling the heat transfer tube 1 in the U direction, and the heat transfer tube 1 is brought into close contact or pressure contact with the inner cylinder 5 (FIG. 4B). Thereafter, the outer cylinder 6 and the upper closing part 9 having a small gap 4d and the outer diameter of the coiled diameter of the assembled heat transfer tube 1 are assembled.
- the outer cylinder 6 and the upper closing part 9 may be integrated or may be disassembled.
- the outer cylinder 6 while pulling the heat transfer tube 1 in the U direction, the outer cylinder 6 is mounted outside the heat transfer tube 1 while maintaining the slight gap 4d, and the upper closing portion 9 is temporarily mounted. Under this temporary mounting state, the upper end of the heat transfer tube 1 is fixed to the upper closing part 9 while maintaining the pulled state in the U direction, and the mounting of the outer cylinder 6 and the upper closing part 9 is completed.
- the tension mechanism 11 of the upper closing part 9 may be capable of adjusting the upper end position of the outer cylinder 6 like a bite joint 11 similar to the lower closing part 8 or may be a fixing means that cannot be adjusted. .
- the load is 10 kg or less when the expandable / contractable coiled heat transfer tube 1 is displaced by 10% with respect to its natural length.
- the outer diameter of the heat transfer tube 1 is 28 mm or less, which enables the heat transfer tube 1 having a small coiled diameter to be processed, and small heat exchange. Can be provided.
- the above example is suitable for the heat transfer tube 1 having a natural state inner diameter larger than the outer diameter of the inner tube 5, but the heat transfer tube 1 has a natural state inner diameter larger than the outer diameter of the inner tube 5 and the heat transfer tube 1.
- the following method can be adopted. Release the pulling force in the U direction under the above temporary mounting condition. As a result, the coil of the heat transfer tube 1 is in close contact or pressure contact with the inner peripheral surface of the attached outer cylinder 6 in an attempt to return to the natural state. Then, the upper end of the heat transfer tube 1 is fixed to the upper closing portion 9 in a state where the heat transfer tube is in close contact or pressure contact with the outer tube 6, and the mounting of the outer tube 6 and the upper closing portion 9 is completed.
- the natural state inner diameter of the heat transfer tube 1 is larger than the outer diameter of the inner tube 5 and the natural state outer diameter of the heat transfer tube 1 is smaller than the inner diameter of the outer tube 6, the following method is adopted. You can also. That is, it is mounted with an appropriate clearance 4c between the inner tube 5 and the heat transfer tube 1, and the outer tube 6 and the upper closing portion 9 having a slight gap with the outer diameter of the coiled diameter of the heat transfer tube 1. Assemble. In this state, by operating the biting joint 11 or the like, the heat transfer tube 1 is pulled in the vertical direction so that the upper and lower ends move away from each other to generate an expansion / contraction force (in this case, a contraction force). The shape diameter is reduced, the heat transfer tube 1 is brought into close contact or pressure contact with the inner cylinder 5, and this expansion / contraction force is maintained to maintain the close contact or pressure contact state.
- an expansion / contraction force in this case, a contraction force
- the heat transfer tube 1 is brought into close contact or pressure contact with the inner cylinder 5, but as another embodiment, by pushing the heat transfer tube 1 downward (S direction) (ie, upper and lower ends) A method in which the coiled diameter is increased and the heat transfer tube 1 is brought into close contact or pressure contact with the outer cylinder 6.
- the upper and lower ends of the heat transfer tube 1 are pushed and pulled in the axial direction of the coil.
- the upper and lower ends of the heat transfer tube 1 may be pushed and pulled in the direction in which the coil spiral extends.
- the direction of pushing and pulling can be appropriately changed on condition that expansion / contraction force can be generated.
- the upper and lower sides are exemplified, but the upper and lower sides may be reversed. That is, upper and lower can be read as one side and the other side.
- the heat transfer tube 1 can be arranged on the concentric circle of the inner and outer tubes in the space 7 formed between the inner tube 5 and the outer tube 6, and the heat transfer tube 1 and the heat transfer tube in the space 7.
- the coil-shaped space 4 sandwiched between 1 and 1 can be used as a flow path of the heat medium 3.
- the heat exchanger according to the present invention can be easily disassembled by the reverse procedure of the above assembling method.
- the heat transfer tube 1 even if the heat transfer tube 1 is not fixed, it is in close contact or pressure contact with at least one of the outer periphery of the inner cylinder 5 and the inner periphery of the outer cylinder 6. Since the displacement of the coiled heat transfer tube 1 due to the generated flow resistance can be prevented, the above problems can be solved.
- a plurality of heat transfer tubes 1 can be implemented.
- the number of heat transfer tubes 1 to be assembled at the same time is not particularly limited. It is determined by the required flow rate of the fluid to be processed and the number of types.
- An example in the case of assembling a plurality of heat transfer tubes is shown in FIGS. 2 (A) (B) and 3 (A) (B).
- the heat transfer tube 1a is connected to the lower closed portion 8 (or the upper closed portion 9) and the inner cylinder 5 which are integrally formed.
- the heat transfer tube 1b are assembled and fixed to different positions of the lower closing portion 8, respectively, and the heat transfer tube 1a and the heat transfer tube 1b are brought into intimate contact or pressure contact with the inner tube 5 by the above mechanism, and then the outer tube 6 and the upper closing portion 9 ( Alternatively, a plurality of heat transfer tubes 1 can be assembled by assembling the lower closing portion 8).
- the coiled diameter of the heat transfer tube 1 can be assembled as a concentric circle. In that case, the heat transfer tube 1a is assembled to the lower closing portion 8 (or the upper closing portion 9) and the inner cylinder 5 which are integrally manufactured, and the heat transfer tube 1a is brought into close contact or pressure contact with the inner cylinder 5 by the above mechanism, and then transferred.
- the outer cylinder 6a having a slight gap with the outer diameter of the coiled diameter of the heat tube 1a is assembled.
- the heat transfer tube 1b is assembled to the lower closing portion 8 (or the upper closing portion 9), and the heat transfer tube 1b is brought into close contact or pressure contact with the outer peripheral surface of the outer cylinder 6a by the above mechanism.
- the plurality of heat transfer tubes 1 can be assembled by assembling the outer cylinder 6b and the upper closing portion 9 (or the lower closing portion 8).
- coiled spaces 4a and 4b are formed.
- the fluid to be treated 2 such as water or an organic solvent used for various chemical experiments
- a solution in which a solute is dissolved, or a fine particle dispersion flows through the heat transfer tube 1.
- the heat transfer tube 1 it is necessary to frequently replace the heat transfer tube 1 due to a change in the experiment contents.
- solids or powders contained in the fluid 2 to be treated or solutes dissolved in the fluid 2 to be treated are deposited due to temperature change, concentration change, drying, etc., they adhere to the heat transfer tube 1 or become clogged. In such a case, it is necessary to replace the heat transfer tube 1.
- the heat exchanger structure of the present invention cannot be expected in a general small flow rate processing, particularly a throw-in type heat exchanger or a double tube type heat exchanger used in various chemical experiments. Solves the problems of the throw-in heat exchanger and double-tube heat exchanger. Further, when the heat transfer tube 1 needs to be replaced as described above, the structure of the heat exchanger of the present invention is very simple compared to the multi-tube heat exchanger and the plate heat exchanger. It is characterized by being very easy to assemble and disassemble. Further, since the heat exchanger can be easily disassembled and cleaned as well as the exchange of the heat transfer tubes, it is not necessary to discard the heat exchanger itself or to perform costly cleaning like a conventional heat exchanger.
- the inner tube 5 When the inner diameter ⁇ of the coiled heat transfer tube 1 is larger than or equal to the outer diameter ⁇ of the inner tube 5 ( ⁇ ⁇ ⁇ ), the inner tube 5 is inserted into the heat transfer tube 1 in its natural state, and after the insertion, When the heat pipe 1 is pulled in a direction in which both ends thereof are moved away, the outer diameter ⁇ of the inner cylinder 5 and the inner diameter ⁇ of the heat transfer pipe 1 are equalized by an external force, and the heat transfer pipe 1 is in close contact or pressure contact with the inner cylinder 5. Even if ⁇ ⁇ ⁇ , it does not prevent the heat transfer tube 1 from being compressed to increase the inner diameter ⁇ in order to facilitate insertion.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
ところが、この特許文献1の熱交換器にあっては、上記伝熱管は、上記内筒の外周面と上記外筒の内周面との双方に固定されておらず、伝熱管は自然状態で装着されているに止まる。そのため、流体の粘度が高い場合などにあっては、流れ抵抗などによって、伝熱管が伸縮し、例えばコイル状のピッチが不均一となり部分的に狭くなったり詰まってしまうおそれがある。
本願の請求項2に係る発明は、上記伝熱管1が、上記内筒5の外周面と上記外筒6の内周面との双方に固定されておらず、上記緊張機構によって、上記伝熱管1のコイル状の径が自然状態よりも拡大又は収縮しており、この拡大又は収縮によって上記伝熱管1が内筒5もしくは外筒6に密接もしくは圧接させられていることを特徴とする請求項1記載の熱交換器を提供する。
本願の請求項3に係る発明は、上記伝熱管1が、コイルの軸方向長さを、その自然状態に比して10%変位させた時に加わるコイルの軸方向の荷重が10kg以下であることを特徴とする請求項1又は2記載の熱交換器を提供する。
本願の請求項4に係る発明は、上記伝熱管1の材質が、ステンレス、ハステロイ、インコネル、チタン、銅、ニッケルなどの金属;ABS,ポリエチレン、ポリプロピレン、PMMAなどのアクリル樹脂;ポリカーボネート、PTFE,PFAなどのフッソ系樹脂;エポキシ樹脂である請求項3記載の熱交換器を提供する。
本願の請求項5に係る発明は、上記伝熱管1の外径が28mm以下であることを特徴とする請求項4記載の熱交換器を提供する。
本願の請求項6に係る発明は、内筒5と外筒6との間に形成される空間7内にコイル状の伝熱管1が配位され、上記伝熱管1内が一方の流路とされ、前記空間7内の上記伝熱管1同士に挟まれたコイル状空間4が他方の流路とされ、一方と他方の流体間に熱交換が行なわれる熱交換器において、上記コイル状の伝熱管1が自然状態から弾性変形させられて、上記伝熱管1が内筒5もしくは外筒6に密接もしくは圧接させられており、上記伝熱管1が弾性変形した状態で一方と他方の流体間に熱交換が行なわれることを特徴とする熱交換器を提供する。
本発明に係る熱交換器の他の作用効果としては、上記のコイル状の伝熱管1の着脱が容易となる。具体的には、自由状態下で、内筒5と外筒6の間に適当なクリアランスを設定した状態で伝熱管1を配位し、その後、緊張状態にして拡縮力を発生させてコイル状の伝熱管1を内筒5と外筒6とのいずれかに接触させ、緊張機構によって拡縮力を維持することで、その接触状態を維持する。そして、分解等の際には、拡縮力を解除することで、容易に伝熱管を取り外すことができる。あるいは、クリアランスがない状態(接触する状態)で、装着した後、拡縮力を加えて圧接状態にし、この圧接状態を緊張機構によって維持する。そして、分解時には、拡縮力を解除することで、伝熱管を比較的容易に取り外すことができる。
よって、より具体的には、効率良い熱交換はもとより、伝熱管の詰まりや付着など発生した場合でも容易に伝熱管を交換でき、従来の様に熱交換器自体を廃棄したりコストをかけて洗浄する必要がなくなる。また熱媒の流れによる伝熱管の伸縮の発生を防止でき、従来品に比べて構造を簡略化できるため、製造工数を削減でき、よって安価に熱交換器を提供することができたものである。
(第1の形態)内筒5の外径α、外筒6の内径β、コイル状の伝熱管1の内径γ、コイル状の伝熱管1の外径θとする。内筒5の外径αに対して、コイル状の伝熱管1の内径γが大きいか或いは等しい場合(α≦γ)、自然状態のまま伝熱管1に内筒5を挿入し、挿入後伝熱管1をその両端が遠ざかる方向に引っ張ってやると、外力により内筒5の外径αと伝熱管1の内径γが等しくなり、伝熱管1が内筒5に密着又は圧接する。なお、α≦γであっても、挿入を容易にするために、伝熱管1を圧縮して内径γを大きくすることを妨げるものではない。
(第2の形態)内筒5の外径αに対して、コイル状の伝熱管1の内径γが小さい場合(α>γ)、伝熱管1を圧縮して内径γを広げた状態で内筒5を挿入する。挿入後、圧縮する力を解除し、さらに必要に応じて引っ張ってやると、伝熱管1は弾性変形により内筒5の外径αと伝熱管1の内径γが等しくなり、伝熱管1が内筒5に密着又は圧接する。
(第3の形態)外筒6の内径βに対して、コイル状の伝熱管1の外径θが小さいか或いは等しい場合(β≧θ)、自然状態のまま伝熱管1を外筒6に挿入し、挿入後伝熱管1を圧縮してやると、外力により外筒6の内径βと伝熱管1の外径θが等しくなり、伝熱管1が外筒6に密着又は圧接する。なお、β≧θであっても、挿入を容易にするために、伝熱管1を引張して外径θを小さくすることを妨げるものではない。
(第4の形態)外筒6の内径βに対して、コイル状の伝熱管1の外径θが大きい場合(β<θ)、伝熱管1を引張状態としてその径を小さくし、外筒6に挿入する。挿入後、引張力を解除し、必要に応じて圧縮すると、外筒6の内径βと伝熱管1の外径θが等しくなり、伝熱管1が外筒6に密着又は圧接する。
1 伝熱管
3 熱媒
4 コイル状空間
5 内筒
6 外筒
8 下閉塞部
9 上閉塞部
11 緊張機構
Claims (6)
- 内筒と外筒との間に形成される空間内にコイル状の伝熱管が配位され、上記伝熱管内が一方の流路とされ、前記空間内の上記伝熱管同士に挟まれたコイル状空間が他方の流路とされ、一方と他方の流体間に熱交換が行なわれる熱交換器において、
上記伝熱管コイル状の径を自然状態よりも拡大又は収縮させるように作用する拡縮力を維持するための緊張機構を備え、
上記緊張機構によって拡縮力が上記伝熱管に加えられた状態で一方と他方の流体間に熱交換が行なわれることを特徴とする熱交換器。 - 上記伝熱管は、上記内筒の外周面と上記外筒の内周面との双方に固定されておらず、
上記緊張機構によって、上記伝熱管のコイル状の径が自然状態よりも拡大又は収縮しており、この拡大又は収縮によって上記伝熱管が内筒もしくは外筒に密接もしくは圧接させられていることを特徴とする請求項1記載の熱交換器。 - 上記伝熱管は、コイルの軸方向長さを、その自然状態に比して10%変位させた時に加わるコイルの軸方向の荷重が10kg以下であることを特徴とする請求項1又は2記載の熱交換器。
- 上記伝熱管の材質が、ステンレス、ハステロイ、インコネル、チタン、銅、ニッケルなどの金属;ABS,ポリエチレン、ポリプロピレン、PMMAなどのアクリル樹脂;ポリカーボネート、PTFE,PFAなどのフッソ系樹脂;エポキシ樹脂からなる群から選択された少なくとも一種である請求項3記載の熱交換器。
- 上記伝熱管1の外径が28mm以下であることを特徴とする請求項4記載の熱交換器。
- 内筒と外筒との間に形成される空間内にコイル状の伝熱管が配位され、上記伝熱管内が一方の流路とされ、前記空間内の上記伝熱管同士に挟まれたコイル状空間が他方の流路とされ、一方と他方の流体間に熱交換が行なわれる熱交換器において、
上記コイル状の伝熱管径が自然状態から弾性変形させられて、上記伝熱管が内筒もしくは外筒に密接もしくは圧接させられており、上記伝熱管が弾性変形した状態で一方と他方の流体間に熱交換が行なわれることを特徴とする熱交換器。
Priority Applications (7)
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PCT/JP2009/069815 WO2011064839A1 (ja) | 2009-11-24 | 2009-11-24 | 熱交換器 |
US13/395,155 US20120193072A1 (en) | 2009-11-24 | 2009-11-24 | Heat exchanger |
JP2009554809A JP4517248B1 (ja) | 2009-11-24 | 2009-11-24 | 熱交換器 |
CN200980160139.XA CN102472594B (zh) | 2009-11-24 | 2009-11-24 | 热交换器 |
EP09851631.3A EP2505951B1 (en) | 2009-11-24 | 2009-11-24 | Heat exchanger |
KR1020117029241A KR101358271B1 (ko) | 2009-11-24 | 2009-11-24 | 열교환기 |
US15/975,276 US20180259266A1 (en) | 2009-11-24 | 2018-05-09 | Heat exchanger |
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PCT/JP2009/069815 WO2011064839A1 (ja) | 2009-11-24 | 2009-11-24 | 熱交換器 |
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US13/395,155 A-371-Of-International US20120193072A1 (en) | 2009-11-24 | 2009-11-24 | Heat exchanger |
US15/975,276 Continuation US20180259266A1 (en) | 2009-11-24 | 2018-05-09 | Heat exchanger |
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EP (1) | EP2505951B1 (ja) |
JP (1) | JP4517248B1 (ja) |
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DE102014220403A1 (de) * | 2014-10-08 | 2016-04-14 | Mahle International Gmbh | Verfahren zur Montage einer Wärmetauschereinrichtung und Wärmetauschereinrichtung |
CN106440871B (zh) * | 2016-12-06 | 2018-10-16 | 上海初远环保科技有限公司 | 换热器 |
CN108463677A (zh) * | 2016-12-19 | 2018-08-28 | 株式会社藤仓 | 热交换器以及磁热泵装置 |
EP3415853A4 (en) * | 2017-02-28 | 2019-11-20 | Tomoe Shokai Co., Ltd | HEAT EXCHANGER |
EP3679414A4 (en) * | 2017-09-08 | 2021-05-05 | Commscope Technologies LLC | HEAT DRAINING HOUSING |
JP7314462B2 (ja) * | 2019-04-02 | 2023-07-26 | Smc株式会社 | 温調装置 |
WO2022015712A1 (en) * | 2020-07-13 | 2022-01-20 | Ivys Inc. | Hydrogen fueling systems and methods |
KR102557046B1 (ko) * | 2022-09-13 | 2023-07-21 | (주)승리에스텍 | 흡수식 냉동기의 흡수기용 전열관의 제조방법 |
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2009
- 2009-11-24 WO PCT/JP2009/069815 patent/WO2011064839A1/ja active Application Filing
- 2009-11-24 CN CN200980160139.XA patent/CN102472594B/zh active Active
- 2009-11-24 EP EP09851631.3A patent/EP2505951B1/en active Active
- 2009-11-24 JP JP2009554809A patent/JP4517248B1/ja active Active
- 2009-11-24 US US13/395,155 patent/US20120193072A1/en not_active Abandoned
- 2009-11-24 KR KR1020117029241A patent/KR101358271B1/ko active IP Right Grant
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2018
- 2018-05-09 US US15/975,276 patent/US20180259266A1/en not_active Abandoned
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JPS5782688A (en) * | 1980-11-12 | 1982-05-24 | Hitachi Ltd | Heat exchanger |
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CN102472594A (zh) | 2012-05-23 |
EP2505951B1 (en) | 2020-12-23 |
JP4517248B1 (ja) | 2010-08-04 |
US20120193072A1 (en) | 2012-08-02 |
KR101358271B1 (ko) | 2014-02-05 |
KR20120067975A (ko) | 2012-06-26 |
JPWO2011064839A1 (ja) | 2013-04-11 |
EP2505951A4 (en) | 2016-06-15 |
EP2505951A1 (en) | 2012-10-03 |
US20180259266A1 (en) | 2018-09-13 |
CN102472594B (zh) | 2014-08-20 |
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