KR101358271B1 - Heat exchanger - Google Patents

Abstract

The object of the present invention is to provide a heat exchanger that can be exchanged efficiently and compactly, and can easily exchange heat transfer tubes through which a fluid to be treated passes, so as to cope with low flow rate treatment, especially various chemical experiments. The heat transfer tube 1 manufactured in the shape of a coil is attached to the lower closure part 8 and the inner cylinder 5, which are integrally formed, for example, and the heat transfer tube 1 is then tensioned in the U direction so that the coil diameter is reduced in diameter. It is a heat exchanger which is closely or press-contacted to the inner cylinder 5, and is equipped with an outer cylinder 6 and an upper closure 9 which have a slight gap with the outer diameter of the heat transfer tube 1, and the fluid to be processed in the heat transfer tube 1 (2) the heat transfer tube (1) and the heat transfer member (1) formed between the inner and outer cylinders (5, 6) and distributed in a coil shape in a space (7) closed by the upper and lower closure portions (8, 9). The heat exchange can be efficiently carried out by circulating the fruit in the coil-shaped space 4 to be fitted, and can be easily disassembled in the reverse order to the mounting method, so that the heat transfer pipe 1 can be easily replaced.

Description

Heat Exchanger {HEAT EXCHANGER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heat exchangers, particularly heat exchangers such as heating and cooling machines that can cope with treatments in which the flow rate of the fluid to be treated is a low flow rate, especially chemical experiments.

In general, the performance required for a heat exchanger is heat exchange performance, corrosion resistance, pressure resistance, fastness, detergency, miniaturization, and the like, and low cost is required. However, in the conventional heat exchanger, a multi-pipe type, a double pipe type, a coil type, a plate type, etc. are mainly used, and there are disadvantages such as a complicated structure, difficulty in miniaturization, high price, and poor cleaning. In particular, heat exchangers used for low flow rate treatment, especially chemical experiments, are generally glass coil type or glass double tube type. In this case, since the heat conductivity of the glass itself is low, the heat exchange performance cannot be expected. However, when cleaning the workpiece attached to the coil, a lot of labor is required, and a complete cleaning may not be possible. As a result, many heat exchangers are prepared. You have to do it, and cost is great. In addition, there are many risks of breakage, and in particular, the cost of safety measures is required for the distribution of the accompanying treatment products.

Conventionally, as disclosed in Patent Literature 1, a coil-shaped heat transfer tube is coordinated in a space formed between an inner cylinder and an outer cylinder, and the coil-shaped space in which the inner portion of the heat transfer tube becomes one flow path and is sandwiched between the heat transfer tubes in the space is It is known that a heat exchanger, which serves as the other flow path, and which realizes efficient heat exchange between one fluid and the other fluid.

By the way, in the heat exchanger of this patent document 1, the said heat exchanger tube is not fixed to both the outer peripheral surface of the said inner cylinder and the inner peripheral surface of the said outer cylinder, and the heat exchanger tube is only attached in a natural state. Therefore, in the case where the viscosity of the fluid is high, the heat transfer tube is stretched and contracted due to flow resistance or the like, and there is a possibility that the coil-shaped pitch becomes uneven, for example, to be partially narrowed or clogged.

In consideration of the manufacture or disassembly of the heat exchanger of Patent Document 1, when the coil-shaped heat transfer tube is mounted or drawn out in the space formed between the inner cylinder and the outer cylinder, when the clearance between the heat transfer tube, the inner cylinder, and the outer cylinder is increased, the attachment and disassembly are performed. Although it becomes easy, a coil-shaped heat exchanger becomes free in space, and there exists a possibility that a problem may arise as the said heat exchanger expands and contracts. On the other hand, eliminating the clearance makes it difficult to mount and disassemble the heat transfer tubes.

Japanese Patent Publication No. 2002-147976

In view of the above, a problem of the present invention is that a coil-shaped heat transfer tube is coordinated in a space formed between an inner cylinder and an outer cylinder, the inside of the heat transfer tube becomes one flow path, and the coil-shaped space fitted between the heat transfer tubes in the space is the other flow path. It is an improvement of the heat exchanger of the type in which heat exchange is performed between one fluid and the other fluid. Specifically, one object of the present invention is to provide a heat exchanger capable of easily mounting and disassembling the heat transfer tube, and another object is to suppress a change in the flow path area due to the deformation of the heat transfer tube due to flow resistance. It is to provide a heat exchanger that can achieve one. In addition, for a more specific purpose, the object of the present invention is to provide a heat exchanger at a lower cost than a conventional product through which the fluid to be treated can be exchanged in a compact and efficient manner and to cope with low flow rate treatment, especially various chemical experiments.

In order to solve the above problems, first, the invention according to claim 1 of the present invention is a coil-shaped heat transfer tube 1 is coordinated in a space 7 formed between an inner cylinder 5 and an outer cylinder 6, and inside the heat transfer tube 1. Is the one flow path, the coil-shaped space 4 sandwiched between the heat transfer tubes 1 in the space 7 is the other flow path, and in the heat exchanger in which heat exchange is performed between one and the other fluid, And a structure for generating an expansion force that acts to enlarge or contract the coil diameter of the coil-shaped heat transfer tube 1 than a natural state, and a tension mechanism for maintaining the generated expansion force. The structure includes a first structure that tensions the heat transfer tube mounted to the inner cylinder; A second structure for mounting the heat transfer tube tensioned in the state mounted in the inner cylinder and releasing the tensile force; A third structure for compressing the heat transfer tube mounted on the outer cylinder; Any one of the structures, wherein, when the heat exchanger is mounted, an expansion force is applied to the heat transfer pipe 1 by the tension mechanism, and heat exchange is performed between one fluid and the other fluid in this state. Provide a heat exchanger.

In the invention according to claim 2, the heat transfer pipe 1 is not fixed to both the outer circumferential surface of the inner cylinder 5 and the inner circumferential surface of the outer cylinder 6, and the coil is provided by the tension mechanism. The coil diameter of the heat-transfer tube 1 of the shape is enlarged or contracted than the natural state, the heat-transfer tube 1 is in close contact or in contact with the inner cylinder 5 or the outer cylinder 6 by this expansion or contraction. Provide a heat exchanger.

In the invention according to claim 3, the load in the axial direction of the coil is applied when the heat transfer pipe 1 is displaced by 10% compared to its natural state, according to claim 1 or 2 It provides a heat exchanger characterized by the following.

The invention according to claim 4 of the present invention is a material according to claim 3, wherein the heat pipe (1) is made of any one or more metals of stainless steel, Hastelloy, Inconel, titanium, copper, and nickel; Provided is a heat exchanger characterized in that ABS, polyethylene, polypropylene, PMMA, polycarbonate, PTFE, PFA, epoxy resin.

The invention according to claim 5 of the present application provides a heat exchanger according to claim 4, wherein an outer diameter of the heat transfer pipe 1 is 28 mm or less.

In the invention according to claim 6 of the present application, a coil-shaped heat transfer tube 1 is coordinated in a space 7 formed between the inner cylinder 5 and the outer cylinder 6, and the inside of the heat transfer tube 1 is one flow path. In the heat exchanger in which the coil-shaped space 4 sandwiched between the heat transfer tubes 1 in the space 7 serves as the other flow path and heat exchange is performed between one and the other fluid, at the time of mounting the heat exchanger, A first structure in which the heat transfer tube is in close contact or press contact with the inner cylinder after the inner tube is inserted into the heat transfer tube in a natural or compressed state; A second structure in which the heat transfer tube is in close contact or press contact with the inner cylinder by inserting the inner cylinder into the heat transfer tube in a compressed state and then releasing or tensioning the compression force of the heat transfer tube; A third structure in which the heat transfer tube is in close contact or press contact with the outer cylinder by inserting the heat transfer tube in a natural state or in a tension state and then compressing the heat transfer tube; A fourth structure in which the heat transfer tube is in close contact or press contact with the outer cylinder by releasing or compressing the tensile force of the heat transfer tube after inserting the heat transfer tube in the tensioned state into the outer cylinder; The coil diameter of the coil-shaped heat transfer tube 1 is elastically deformed from a natural state by any of the structures, and the heat transfer tube 1 is closely or press-contacted with the inner cylinder 5 or the outer cylinder 6, and the heat transfer tube ( The heat exchanger is characterized in that heat exchange is performed between one fluid and the other fluid in the state where 1) is elastically deformed.
Hereinafter, "coil diameter of a coil-shaped heat exchanger tube" is described as "diameter of coil shape of a heat-transfer tube" or "diameter (inner diameter, outer diameter) of a coil-shaped heat exchanger tube".

(Effects of the Invention)

The heat exchanger according to the present invention maintains a state in which the expansion force is applied to the heat transfer pipe 1 by the tension mechanism at the time of mounting the heat exchanger and in use (that is, at least during heat exchange). Therefore, the heat transfer tube is always in a state where a force is applied, and even if the heat transfer tube 1 is not in contact with the inner cylinder 5 or the outer cylinder 6, deformation of the heat transfer tube due to flow resistance or the like is unlikely to occur, resulting in uneven coil-shaped heat transfer tube 1. Deformation can be mitigated. More preferably, even if the heat transfer pipe 1 is not fixed to both the outer circumferential surface of the inner cylinder 5 and the inner circumferential surface of the outer cylinder 6, the heat transfer tube 1 is actuated by the inner cylinder 5 or the outer cylinder. By closely contacting or pressing with (6), it becomes hard to produce a further deformation | transformation.

As another effect of the heat exchanger according to the present invention, attachment and detachment of the coil-shaped heat transfer tube 1 becomes easy. Specifically, in the free state, the heat transfer pipe 1 is coordinated with the appropriate clearance set between the inner cylinder 5 and the outer cylinder 6, and after that, the expansion force is generated in a tension state to generate a coiled heat transfer tube 1. Is in contact with any one of the inner cylinder 5 and the outer cylinder 6, and the contact state is maintained by maintaining the expansion force by the tension mechanism. Then, during disassembly, the heat transfer tube can be easily separated by releasing the expansion force. Alternatively, it is mounted in a state without a clearance (contacting state), and an expansion force is applied to make the pressure contact state, and the pressure contact state is maintained by the tension mechanism. In addition, during disassembly, the heat transfer tube can be separated relatively easily by releasing the expansion force.

Therefore, more specifically, the heat exchanger tube can be easily exchanged even when the heat exchanger tube is clogged or adhered, as well as efficient heat exchange, so that the heat exchanger itself does not need to be disposed of or cleaned at a cost. In addition, the expansion and contraction of the heat transfer tube due to the flow of the fruit can be prevented, and the structure can be simplified compared with the conventional products, so that the manufacturing labor can be reduced, and therefore, the heat exchanger can be provided at a low cost.

1: (A) is explanatory drawing of the structure of the heat exchanger which concerns on embodiment of this invention, (B) is the same top view.
FIG. 2A is a diagram for explaining the structure of a heat exchanger according to another embodiment of the present invention, and FIG. 2B is a plan view of the same.
FIG. 3A is a structural explanatory diagram of a heat exchanger according to still another embodiment of the present invention, and FIG. 3B is a plan view of the same.
4: (A) is explanatory drawing of the principal part in the mounting operation of the heat exchanger by embodiment of this invention, (B) is explanatory drawing of the principal part at the time of completion of the mounting operation.

Next, one Embodiment of this invention is described based on drawing. In addition, the top, bottom, left and right in this invention are only showing relative positional relationship, and do not specify an absolute position.

As shown in Fig. 1, the heat exchanger has an inner cylinder 5 and an outer cylinder 6 substantially circular in cross section, and the upper and lower ends thereof are closed by upper and lower closures 9 and 8. In this example, the inner cylinder 5 and the lower closure 8 are integral. In addition, as another embodiment, the upper closure part 9 which is not the lower closure part 8 is integrated with the inner cylinder 5, and both the lower closure part 8 and the upper closure part 9 have an inner cylinder ( It is good also as a thing which can be attached or detached without taking an integrated type with 5).

In the space 7 between the inner and outer cylinders 5 and 6, the coil-shaped heat transfer tube 1 is provided to be in close contact or at least one of the outer circumference of the inner cylinder 5 or the inner circumference of the outer cylinder 6, It penetrates the closing parts 9 and 8, and can connect with the piping of the heat exchanger exterior. However, this heat exchanger tube 1 is not fixed to both the outer peripheral surface of the said inner cylinder 5, and the inner peripheral surface of the said outer cylinder 6. As shown in FIG. Between the windings of this coil-shaped heat transfer tube 1, the coil-shaped space 4 which has a predetermined space | interval enclosed by the upper and lower side heat-transfer tubes 1 of this winding difference and the inner and outer cylinders 5 and 6 is formed. Although the coil-shaped heat transfer pipe 1 and the inner and outer cylinders 5 and 6 of the figure are implemented as a cylindrical shape whose diameter is uniform up and down, it can also be implemented as having a different diameter up and down, such as a cone and an inverted cone.

Inside the heat transfer tube 1, the to-be-processed fluid 2, such as the solution which melt | dissolved water, an organic solvent, or a solute, and a microparticle dispersion liquid, flows, for example. The material of the heat exchanger tube 1 is expandable and it is preferable to use the thing with high durability, such as corrosion resistance, pressure resistance, or fastness with respect to the target to-be-processed fluid. For example, metals, such as stainless steel, Hastelloy, Inconel, titanium, copper, and nickel; Acrylic resins such as ABS, polyethylene, polypropylene, and PMMA; Fluorine resins such as polycarbonate, PTFE, and PFA; Epoxy resins and the like.

In other words, the coil space 4 outside the heat pipe 1, in other words, the coil space 4 between the heat pipe 1 and the heat pipe 1 is a space through which the fruit 3 flows. The fruit 3 enters and exits from the nozzle 10 provided in the upper and lower closure parts 9 and 8. Thereby, the fruit 3 can be made to flow in the space 7 and the coil space 4. The heat exchange of the fluid 2 to be processed first distributes the fluid 2 in the upward direction (U direction) in FIG. 1 and distributes the totally opposite flow by passing the fruit 3 in the downward direction (S direction). By forming, both the fluid 2 and the fruit 3 can be prevented from increasing the pressure loss, ensuring a large overall heat transfer coefficient, and can be efficiently and effectively performed. However, it does not prevent the flow of both fluids in the same direction.

The mounting and disassembly of the heat exchanger according to the present invention will be described. First, the heat exchanger tube 1 is attached to the lower closure part 8 and the inner cylinder 5 which were integrally manufactured. In this mounting, a smooth mounting operation can be performed by setting an appropriate clearance 4c between the inner cylinder 5 and the heat transfer pipe 1 (see FIG. 4A). After mounting, the heat pipe 1 is fixed to the lower closure 8. This fixing is performed with the tension mechanism 11. The tension mechanism 11 is for maintaining the expansion force which acts to expand or contract the coil-shaped diameter of the heat exchanger tube 1 from a natural state, In the example of illustration, the bite joint 11 is employ | adopted. As another embodiment, a clamp, a saddle band, a method of using a strap or a bracket, etc. may be mentioned, and other fixing may be performed by welding or adhesion (not shown). In addition, the tension mechanism 11 may only maintain the expansion force, and other means may be used to generate the expansion force. In the case of the bite joint 11, the tension mechanism 11 generates the expansion force and maintains the expansion force. It is supposed to be.

Subsequently, the heat transfer tube 1 is stretched in the U direction to reduce the diameter of the coil shape of the heat transfer tube 1 so that the heat transfer tube 1 is intimately or press-contacted to the inner cylinder 5 (FIG. 4B). Thereafter, the outer cylinder 6 and the upper closure 9 having the outer diameter of the coil-shaped diameter of the attached heat transfer tube 1 and a slight gap 4d are mounted. The outer cylinder 6 and the upper closure part 9 may be integrated or may be disassembled.

More specifically, the outer tube 6 is attached to the outer side of the heat exchanger tube 1, and the upper closure part 9 is temporarily attached, maintaining the some clearance 4d while pulling the heat exchanger tube 1 to U direction. Under the temporary mounting state, the upper end of the heat transfer pipe 1 is fixed to the upper closure 9 while maintaining the tension in the U direction, and the mounting of the outer cylinder 6 and the upper closure 9 is completed. The tension mechanism 11 of the upper closure 9 may be capable of adjusting the upper end position of the outer cylinder 6 like the bite joint 11 that is the same as the lower closure 8, or may be an unadjustable fixing means. good.

At this time, in order to enable easy mounting and disassembly, it is preferable that the stretchable coil-shaped heat transfer tube 1 has a load of 10 kg or less when the stretch amount is displaced by 10% with respect to its natural length. In addition, for the purpose of low flow rate treatment, for example, various chemical experiments, a small tube diameter of 28 mm or less in the outer diameter of the heat exchanger tube 1 is preferable, and the heat exchanger tube 1 having a small coil-shaped diameter can be processed to provide a small heat exchanger. Can provide.

The above example is suitable for the inner diameter of the heat transfer tube 1 being larger than the outer diameter of the inner cylinder 5, but the inner diameter of the heat transfer tube 1 is larger than the outer diameter of the inner tube 5, and When the outer diameter of a natural state is larger than the inner diameter of the outer cylinder 6, the following method can be employ | adopted. The tension is released in the U direction under the temporary mounting state. As a result, the coil of the heat transfer tube 1 is brought into close contact with the inner circumferential surface of the outer cylinder 6 attached to it in a natural state. The upper end of the heat transfer tube 1 is fixed to the upper closure portion 9 in a state in which the heat transfer tube is closely or press-contacted to the outer cylinder 6 to complete the mounting of the outer cylinder 6 and the upper closure portion 9.

In addition, when the inner diameter of the natural state of the heat exchanger tube 1 is larger than the outer diameter of the inner cylinder 5, and the outer diameter of the natural state of the heat exchanger tube 1 is smaller than the inner diameter of the outer cylinder 6, the following method may be employ | adopted. . In other words, the inner cylinder 5 and the heat transfer tube 1 are mounted in a state where a proper clearance 4c is set, and the outer cylinder 6 and the upper closure portion having a slight gap with the outer diameter of the coil-shaped diameter of the heat transfer tube 1 ( 9) Fit. In this state, by operating the bite joint 11, the heat transfer tube 1 is stretched in a direction away from each other in the up and down direction to generate an expansion force (in this case, a force to reduce it), thereby increasing the coil diameter of the heat transfer tube 1. A small hardening is carried out, and the heat exchanger tube 1 is made to be intimately or pressed against the inner cylinder 5, and this expansion force is maintained and it is kept in close or pressed contact state.

In the above embodiment, the heat transfer tube 1 is brought into close contact or pressure contact with the inner cylinder 5, but in another embodiment, the heat transfer tube 1 is pushed from the upper side to the lower side (in the S direction) (that is, by approaching the upper and lower ends) to form a coil. The method of making the heat exchanger tube 1 close or press-contact with the outer cylinder 6 by making the diameter large diameter is mentioned. In this example, the upper and lower ends of the heat transfer tubes 1 are pushed and pulled in the axial direction of the coil. For example, the upper and lower ends of the heat transfer tubes 1 may be pushed and pulled in the direction in which the spiral of the coils extends. The direction of pushing and pulling can be changed as long as it can generate an expansion force. In addition, although the upper and lower sides were illustrated in the said description, it may be reversed up and down. In other words, it can be read as "one side" and the other side.

According to the present invention, the heat transfer tube 1 can be coordinated on the concentric circles of the inner and outer cylinders in the space 7 formed between the inner cylinder 5 and the outer cylinder 6, and thus the heat transfer tube 1 and the heat transfer tube ( The coil-shaped space 4 fitted in 1) can be used as the flow path of the fruit 3. The heat exchanger according to the present invention can be easily disassembled in the reverse order to the above mounting method.

When the coil-shaped heat exchanger tube 1 is not fixed in the space 7, the heat-transfer tube 1 is stretched and contracted by the flow resistance of the fruit 3, etc., for example, when the coil-shaped pitch is clogged, etc. It is assumed. In other words, when the coil-shaped heat-transfer tubes 1 move close to each other by the flow resistance of the fruit 3 and finally the coil-shaped heat-transfer tubes 1 do not exist. This is assumed. In this case, when the fruit 3 is hard to flow in the coil-shaped space 4, the heat exchange cannot be performed at all, or the heat exchange can not be performed effectively or efficiently. It is considered to be. In the present invention, since the heat transfer pipe 1 is in close contact or at least one of the outer circumference of the inner cylinder 5 or the inner circumference of the outer cylinder 6 even though it is not fixed, flow resistance generated by circulating the fruit 3 Since it is possible to prevent the displacement of the heat transfer pipe 1 having a coil shape due to the above problem can be solved.

In addition, the heat exchanger tube 1 can also be implemented in multiple numbers. The number of heat transfer tubes 1 mounted at the same time is not particularly limited. It is determined by the required flow rate of the fluid to be processed, the number of types, and the like. An example in the case of attaching a some heat exchanger tube is shown to FIG. 2 (A), (B) and FIG. 3 (A), (B). For example, as shown in FIG. 2, in the case of mounting the coil shape diameter of the heat exchanger tube 1 with the same diameter, the lower closure part 8 (or the upper closure part 9) manufactured integrally, and the inner cylinder ( The heat transfer tube 1a and the heat transfer tube 1b are attached to 5), and are respectively fixed to the different positions of the lower closure part 8, and the heat transfer tube 1a and the heat transfer tube 1b are closely connected to the inner cylinder 5 by the said mechanism. Alternatively, the plurality of heat transfer pipes 1 can be mounted by press welding, and then attaching the outer cylinder 6 and the upper closure 9 (or the lower closure 8). As another embodiment, as shown in FIG. 3, it can also be carried out by a method in which the coil-shaped diameter of the heat transfer pipe 1 is mounted concentrically. In that case, the heat transfer pipe 1a is attached to the lower closure 8 (or upper closure 9) and the inner cylinder 5 which are integrally manufactured, and the heat transfer tube 1a is closely connected to the inner cylinder 5 by the said mechanism. Or it press-contacts and then attaches the outer cylinder 6a which has a some gap with the outer diameter of the coil-shaped diameter of the heat exchanger tube 1a. Subsequently, the heat transfer tube 1b is attached to the lower closure portion 8 (or the upper closure portion 9) so that the heat transfer tube 1b is in close contact or pressure contact with the outer peripheral surface of the outer cylinder 6a by the above mechanism. Thereafter, the plurality of heat transfer tubes 1 can be mounted by attaching the outer cylinder 6b and the upper closure portion 9 (or the lower closure portion 8). In the embodiment shown in FIG. 3, the coil spaces 4a and 4b are formed. In addition, when mounting three or more heat exchanger tubes, it can be implemented by the same method as the said material and mounting method. In that case, it is also possible to combine the mounting as the same diameter and the mounting as concentric circles.

As described above, the heat transfer tube 1 is circulated with the fluid 2 to be treated, such as water, an organic solvent, a solution in which solutes are dissolved, or a fine particle dispersion, which is used for low flow rate treatment, especially in various chemical experiments. Therefore, the heat exchanger tube 1 needs to be replaced frequently by the change of experiment content, etc. In addition, when the solid or powder contained in the to-be-processed fluid 2 or the solute dissolved in the to-be-processed fluid 2 precipitates by temperature change, concentration change, drying, etc., it adheres to the heat exchanger tube 1, A blockage occurs and even in such a case, the heat exchanger tube 1 needs to be replaced.

Since the efficiency of heat exchange cannot be expected in a general low flow rate treatment, especially an input heat exchanger or a double tube heat exchanger used in various chemical experiments, the heat exchanger structure according to the present invention has the structure of the input heat exchanger or double tube heat exchanger. Solved the problem of qi. In addition, as described above, even when the exchange of the heat exchanger tube 1 occurs, the structure of the heat exchanger of the present invention is very simple as compared to a multi-tube heat exchanger or a plate heat exchanger, so that assembly and disassembly can be performed very easily. to be. In addition, since the heat exchanger can be easily disassembled and cleaned as well as the heat exchanger tube, there is no need to dispose of the heat exchanger itself or to clean it at a cost like the conventional heat exchanger.

Moreover, as the form of the close contact or pressure contact with the inner cylinder 5 and the outer cylinder 6 by elastic deformation of a heat exchanger tube, multiple types can be implemented and this is shown below.

(1st aspect) The outer diameter (alpha) of the inner cylinder 5, the inner diameter (beta) of the outer cylinder 6, the inner diameter (gamma) of the coil-shaped heat exchanger tube 1, and the outer diameter (theta) of the coil-shaped heat exchanger tube 1 It is done. When the inner diameter γ of the coil-shaped heat exchanger tube 1 is greater than or equal to the outer diameter α of the inner cylinder 5 (α ≦ γ), the inner cylinder 5 is inserted into the heat transfer tube 1 in a natural state. When the heat transfer tube 1 is pulled in a direction away from both ends after insertion, the outer diameter α of the inner tube 5 is equal to the inner diameter γ of the heat transfer tube 1 by an external force, and thus the heat transfer tube 1 becomes the inner tube 5. Contact or press Moreover, even if it is (alpha) <= (gamma), it does not prevent that the heat exchanger tube 1 is compressed and the inner diameter (gamma) is made large in order to make insertion easy.

(2nd aspect) When the inner diameter (gamma) of the coil-shaped heat exchanger tube 1 is small with respect to the outer diameter (alpha) of the inner cylinder 5 ((alpha >> (gamma))), the heat exchanger tube 1 was compressed and the inner diameter (gamma) was expanded. Insert the inner cylinder (5) in the state. After releasing the compressive force after insertion and tensioning as necessary, the heat transfer tube 1 is elastically deformed so that the outer diameter α of the inner cylinder 5 and the inner diameter γ of the heat transfer tube 1 are equal to each other. The inner cylinder 5 is in close contact or press contact.

(Third Embodiment) When the outer diameter θ of the coil-shaped heat transfer tube 1 is smaller than or equal to the inner diameter β of the outer cylinder 6 (β ≥ θ), the heat transfer tube 1 is opened in a natural state. When the heat transfer tube 1 is compressed after insertion, the inner diameter β of the outer cylinder 6 and the outer diameter θ of the heat transfer tube 1 are equal to each other by the external force, and the heat transfer tube 1 becomes the outer cylinder 6. Or close contact with In addition, even if β≥θ, it does not prevent the heat transfer tube 1 from being pulled out to reduce the outer diameter θ in order to facilitate insertion.

(4th aspect) When the outer diameter (theta) of the coil-shaped heat exchanger tube 1 is large with respect to the inner diameter (beta) of the outer cylinder 6 ((beta << theta)), the diameter of the heat exchanger tube 1 is made into tension and the diameter is made small. To the outer cylinder (6). When the tension force is released after insertion and compressed as necessary, the inner diameter β of the outer cylinder 6 and the outer diameter θ of the heat transfer tube 1 are equal to each other so that the heat transfer tube 1 is in close contact or pressure contact with the outer cylinder 6.

Close contact

Relationship between diameter before insertion
State of heat exchanger tube 1 at insertion
External force after insertion
Inner tube (5)

α≤γ
Natural or compressed
Seal
Inner tube (5)

α> γ
Compression
Unnecessary or tensioned
Outer tube (6)

β≥θ
Natural or tensile
compression
Outer tube (6)

β <θ
Tensile state
Unnecessary or compressed

1: heat pipe 3: fruit
4: coil shape space 5: inner cylinder
6: outer cylinder 8: lower closure
9: upper closure 11: tension mechanism

Claims (6)

A coil-shaped heat transfer tube is coordinated in a space formed between an inner cylinder and an outer cylinder, the inside of the heat transfer tube becomes one flow path, and the coil-shaped space fitted between the heat transfer tubes in the space becomes the other flow path, one fluid and the other fluid. In a heat exchanger where heat exchange is performed between:
A structure for generating an expansion force acting to expand or contract a coil diameter of the coil-shaped heat transfer tube than a natural state;
It is provided with a tension mechanism for maintaining the generated expansion force,
The above-
A first structure for tensioning the heat transfer tube mounted in the inner cylinder;
A second structure for mounting the heat transfer tube tensioned in the state mounted in the inner cylinder and releasing the tensile force;
A third structure for compressing the heat transfer tube mounted on the outer cylinder; Any one of the structure,
An expansion force is applied to the heat transfer pipe by the tension mechanism when the heat exchanger is mounted, and heat exchange is performed between one fluid and the other fluid in this state. The method of claim 1,
The heat transfer tube is not fixed to both the outer circumferential surface of the inner cylinder and the inner circumferential surface of the outer cylinder,
And the coil diameter of the coil-shaped heat exchanger tube is enlarged or shrunk than the natural state by the tension mechanism, and the heat exchanger tube is in close contact with the inner or outer cylinder by the expansion or contraction. 3. The method according to claim 1 or 2,
The heat exchanger tube is characterized in that the load in the axial direction of the coil is 10kg or less when the axial length of the coil is displaced by 10% compared to its natural state. The method of claim 3, wherein
The material of the heat pipe is at least one metal of stainless steel, Hastelloy, Inconel, titanium, copper, nickel; Heat exchanger, characterized in that at least one selected from the group consisting of ABS, polyethylene, polypropylene, PMMA, polycarbonate, PTFE, PFA, epoxy resin. 5. The method of claim 4,
The heat exchanger, characterized in that the outer diameter of the heat transfer pipe (1) is 28 mm or less. A coil-shaped heat transfer tube is coordinated in a space formed between an inner cylinder and an outer cylinder, the inside of the heat transfer tube becomes one flow path, and the coil-shaped space fitted between the heat transfer tubes in the space becomes the other flow path, one fluid and the other fluid. In a heat exchanger where heat exchange is performed between:
At the time of mounting of the heat exchanger,
A first structure in which the heat transfer tube is in close contact or press contact with the inner cylinder after the inner tube is inserted into the heat transfer tube in a natural or compressed state;
A second structure in which the heat transfer tube is in close contact or press contact with the inner cylinder by inserting the inner cylinder into the heat transfer tube in a compressed state and then releasing or tensioning the compression force of the heat transfer tube;
A third structure in which the heat transfer tube is in close contact or press contact with the outer cylinder by inserting the heat transfer tube in a natural state or in a tension state and then compressing the heat transfer tube;
A fourth structure in which the heat transfer tube is in close contact or press contact with the outer cylinder by releasing or compressing the tensile force of the heat transfer tube after inserting the heat transfer tube in the tensioned state into the outer cylinder; The coil diameter of the coil-shaped heat exchanger tube is elastically deformed from a natural state by any one of the structures, and the heat-transfer tube is tightly or press-contacted to the inner or outer cylinder, and the heat transfer tube is elastically deformed between one fluid and the other fluid. A heat exchanger characterized in that heat exchange is performed.

Images