JP2002062061A - Heat exchanger with tubes and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat exchanger with tubes and the manufacturing method of the same, contriving the improvement of productivity as well as the facilitation of heat transfer from refrigerant to a heat radiating body and easy in handling. SOLUTION: The heat exchanger is equipped with a heat transfer tube 11, whose inside the refrigerant flows, and the heat radiating body, provided on the outer periphery of the heat transfer tube to effect heat exchange between contacting fluid A and the refrigerant through the heat transfer tube, while the heat transfer tube is formed of a continuous tube having a predetermined configuration and the heat radiating body is formed of a thin sheet having a predetermined configuration, further, the heat radiating body 12 covers the peripheral surface of the heat transfer tube 11 along the continuous direction of the same by the surface 12a opposed to the heat transfer tube and is contacted with the tube. Accordingly, the heat exchange between the fluid contacted with the heat radiating body covering the continuous heat transfer tube and the refrigerant is improved while the heat exchanger can be manufactured simply by contacting the heat radiating body with the surface of the opposing heat transfer tube along the continuous direction of the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube heat exchanger which can be used in refrigerators, refrigerators, air conditioners, vending machines and the like, and a method of manufacturing the same.

[0002]

2. Description of the Related Art As shown in FIG. 10, a conventional heat exchanger with tubes of this type has a number of radiating fins 1 arranged side by side with an interval through which air indicated by arrows passes. A pipe 2 through which coolant flows is orthogonally penetrated through the heat radiation fins 1 and is provided in a meandering manner. Then, air indicated by an arrow is passed between the plurality of radiating fins 1, and the heat of the refrigerant flowing through the pipe 2 is transmitted from the pipe 2 to the air via the radiating fins 1. The heat exchanged air is used for a predetermined purpose.

[0003] The heat exchanger with tubes is generally manufactured as follows. The radiation fins 1 are formed by cutting a large number of thin sheets of an aluminum alloy into a predetermined shape. Then, the tube 2 is made to penetrate the many radiating fins 1 in which a number of the cut fins are arranged at regular intervals, and the U-shaped tube is welded to the tubes 2 on both sides of the radiating fins. And heat radiation fins 1 and tubes 2
Are brought into close contact with each other.

[0004]

The above-mentioned conventional heat exchanger with tubes involves many complicated operation steps, and involves high-precision operations, resulting in low productivity. That is, a thin plate made of an aluminum alloy must be cut into a predetermined shape to form a large number of heat radiation fins 1. And
The large number of radiating fins 1 must be arranged at regular intervals, and the tube 2 is penetrated perpendicularly to the large number of radiating fins 1. A U-shaped tube must be welded to the tubes 2 on both sides of the radiating fin to make a meandering shape.

A large number of radiating fins 1 and the tube 2 are joined at the end surfaces of the thin radiating fins through which the tube 2 passes.
Therefore, the heat transfer of the refrigerant to the radiation fins 1 through the pipe 2 was not large.

Further, since the pipe 2 located between the radiating fins 1 through which the air flows has a rear side on which the air does not directly hit, which is opposite to the front face with which the air directly hits, the heat radiation varies, which is not preferable. Radiating fins 1 to reduce
We need to do something more.

In the manufacturing process, the outer periphery of the radiating fin 1 is erroneously bent, so that a certain interval for air circulation is narrowed. And so on.

SUMMARY OF THE INVENTION The present invention solves many of the above-mentioned problems, improves the productivity, facilitates the transfer of heat to the radiator of the refrigerant, and easily handles the heat exchanger with tubes. It is intended to provide a manufacturing method.

[0009]

According to a first aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and a heat transfer tube provided on an outer periphery of the heat transfer tube, the refrigerant being transmitted through the heat transfer tube. A heat dissipating body for transmitting heat to a fluid to be contacted, wherein the heat transfer tube is formed of a long tube having a predetermined shape, the heat dissipating member is formed of a thin plate having a predetermined shape, and the heat dissipating member is a heat transfer tube. The heat transfer tubes are formed so as to cover the circumferential surfaces of the heat transfer tubes along the longitudinal direction of the heat transfer tubes and to be closely attached to each other.

According to the above means, since the radiator is in close contact with the surface of the heat transfer tube along the longitudinal direction of the heat transfer tube on the surface facing the heat transfer tube, the heat is transmitted through the heat transfer tube. The heat of the cooled refrigerant is uniformly transmitted to the contacting fluid from the entire radiator and can be positively transmitted, and even in handling, even if some damage occurs on the outer periphery of the radiator as in the conventional case. It has an effect that does not cause a big problem.

According to a second aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and a heat radiator provided on an outer periphery of the heat transfer tube to transfer heat of the refrigerant transmitted through the heat transfer tube to a fluid in contact with the heat transfer tube. The heat transfer tube is formed by a long tube having a predetermined shape, the heat dissipator is formed by a single thin plate having a predetermined shape, and the heat dissipator is transferred on a surface facing the heat transfer tube. The heat transfer tube is formed so as to cover the surface of the heat transfer tube in the circumferential direction along the longitudinal direction of the heat tube and to be closely attached thereto.

According to the above means, the same function as the first aspect of the invention is obtained. Since the heat radiator is a single thin plate, the heat radiator has an effect that it can be easily adhered to the heat transfer tube and can be easily folded not only into a flat plate but also into a heat exchanger having a predetermined shape.

According to a third aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and a heat radiator provided on an outer periphery of the heat transfer tube to transfer heat of the refrigerant transmitted through the heat transfer tube to a fluid in contact therewith. The heat transfer tube is formed of a long tube having a predetermined shape, the heat radiator is formed by facing two thin plates of a predetermined shape, and the heat radiator is formed opposite to the heat transfer tube. The heat transfer tube is formed by covering and adhering the circumferential surface of the heat transfer tube from both sides along the longitudinal direction of the heat transfer tube.

According to the above-mentioned means, the same function as the first aspect of the invention is obtained. Since the heat dissipating body covers the circumferential surface of the heat transfer tube from both sides at the surface opposed to the heat transfer tube and closely adheres to the heat dissipating tube, the heat dissipating member can be more easily adhered to the heat transfer tube than a single heat dissipating member. The use of the structure closely contacting the heat transfer tube has the effect of eliminating the need to integrally join the two radiators in portions other than the heat transfer tube.

According to a fourth aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and a heat radiator provided on an outer periphery of the heat transfer tube to transfer heat of the refrigerant transmitted through the heat transfer tube to a fluid in contact with the heat transfer tube. Body, the heat transfer tube is formed of a long tube of a predetermined shape, the radiator is formed of a thin plate of a predetermined shape,
In addition, the radiator covers the surface of the heat transfer tube in the circumferential direction along the longitudinal direction of the heat transfer tube on the surface opposite to the heat transfer tube and makes it closely adhered, and is bent into a shape according to the installation location of the mounting equipment is there.

According to the above means, the same action as the first aspect of the invention is obtained. If the heat radiator is bent into a predetermined shape instead of a flat plate, a heat exchanger having a shape corresponding to the installation location of the device to be mounted can be easily provided.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a plurality of holes through which a fluid passes through a portion of the heat radiator located between the heat transfer tubes. Alternatively, a cut-and-raised one-sided hole is provided.

According to the above-described means, the same action as the invention according to any one of claims 1 to 4 is obtained. The radiator has a function of causing a turbulent flow in the fluid by passing the fluid through a number of holes or the cut-and-raised one-sided holes, thereby promoting heat transfer of the radiator to the fluid.

According to a sixth aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and a heat radiator provided on an outer periphery of the heat transfer tube to transfer heat of the refrigerant transmitted through the heat transfer tube to a fluid in contact therewith. A first step of cutting the thin plate into a predetermined shape to form the radiator, and disposing the heat transfer tube having a predetermined shape at a prescribed position of the radiator formed in the first step. This is a manufacturing method comprising a second step and a third step of closely covering and covering the circumferential surface of the heat transfer tube along the longitudinal direction of the heat transfer tube on the surface of the radiator opposite to the heat transfer tube.

According to the above manufacturing method, the heat transfer tube arranged in the second step at the specified position of the heat radiator formed in the first step is connected to the third step.
In the process, the heat exchanger can be easily manufactured by closely adhering the surface of the radiator facing the heat transfer tube along the longitudinal direction of the heat transfer tube.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat exchanger with tubes according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a first embodiment of the present invention.
And FIG. 2 is a perspective view of a heat exchanger with a tube according to an embodiment corresponding to the invention described in claim 2. FIG. 2 is a cross-sectional view of the main part. This heat exchanger can be used for the condenser and evaporator in a general refrigeration cycle in which a compressor, a condenser and an evaporator are piped in a ring and a refrigerant compressed by the compressor is circulated to perform work. Things.

The heat exchanger has a heat transfer tube 11 through which a refrigerant flows, and is provided on the outer periphery of the heat transfer tube 11.
And a radiator 12 that transmits the heat of the refrigerant transmitted through the air to a fluid A such as air that comes into contact with the refrigerant. The heat transfer tube 11
A long thin circular pipe made of copper is continuously bent in a meandering shape having a predetermined shape, and is formed of a long pipe cut at a predetermined length. The heat dissipator 12 is formed by a single thin plate formed by cutting a long thin plate made of an aluminum alloy into a rectangle having a predetermined width and a predetermined length as a predetermined shape. And the radiator 1
2 is a straight tube portion 1 of the heat transfer tube 11 as is apparent from FIG.
The heat transfer tube 11 is attached to one surface of the radiator 12 by ultrasonic welding along the longitudinal direction of the heat transfer tube 11 and covering the entire surface in the circumferential direction of the heat transfer tube 11 on the surface 12a opposed to 1a. It is arranged. The fluid A flows from the right side to the left side by a fan (not shown) in parallel with the plane of the radiator 12 as indicated by an arrow, but may be reversed.
And it can flow from any direction of the upper and lower sides of the radiator 12, and in order to flow more efficiently, on both sides of the radiator 12,
A guide plate (not shown) may be provided at intervals.

In the above embodiment, the refrigerant sent from the compressor flows in from one inlet of the heat transfer tube 11 and flows out from the other outlet. Then, the heat of the refrigerant is transmitted to the radiator 12 through the heat transfer tube 11 and is exchanged with the fluid A flowing parallel to the plane of the radiator 12, and the fluid A is used for work. is there.

In particular, according to the present invention, the radiator 12 is connected to the heat transfer tube 11.
Of the heat transfer tube 11 along the longitudinal direction of the meandering heat transfer tube 11 so as to cover the entire surface of the heat transfer tube 11 in the circumferential direction.
The heat of the refrigerant transmitted through the radiator 12 is easily transmitted to the entire radiator 12. Therefore, the fluid A flowing along the plane of the heat radiator 12 can uniformly transmit heat from the entire heat radiator 12 and can positively transmit heat.

Further, even if the outer periphery of the heat dissipating body 12 is slightly damaged, it does not cause a great obstacle such as changing a constant interval of passage of the fluid unlike the conventional one. Can be facilitated and productivity can be improved.

Further, since the heat dissipator 12 is a thin sheet, the work of closely adhering to the circumferential surface of the heat transfer tube can be facilitated, and the heat dissipator 12 is bent not to be a flat plate but to a heat exchanger having a predetermined shape. It can be done easily and conveniently.

In the first embodiment, the heat transfer tubes 11
Surface 12a of heat radiator 12 facing straight pipe portion 11a
Thus, the entire surface of the heat transfer tube 11 in the circumferential direction is covered along the longitudinal direction of the heat transfer tube 11, but a part of the circumferential surface of the heat transfer tube 11 may be covered as long as the purpose is achieved. . Also,
Similarly, ultrasonic welding of the radiator 12 to the heat transfer tube 11
It may be a whole or a part in close contact.

(Embodiment 2) FIG. 3 shows a third embodiment of the present invention.
FIG. 4 is a perspective view of a heat exchanger with a tube in one embodiment corresponding to the invention described in FIG. 4, and FIG. 4 is a cross-sectional view of the main part. The second embodiment of the invention differs from the first embodiment only in that the number of heat radiators made of thin plates is two. Therefore, portions having the same configuration and operation and effect are denoted by the same reference numerals. Detailed description will be omitted, and different portions will be mainly described.

The heat radiator 12 is formed by joining two thin plates cut into a predetermined shape. The radiator 12 has a heat transfer tube 11 formed in a predetermined shape therebetween,
Two thin plates of a predetermined shape are formed so as to face each other, and a surface 12a facing the straight pipe portion 11a of the heat transfer tube 11 extends along the longitudinal direction of the heat transfer tube and the entire surface in the circumferential direction of the heat transfer tube 11. Are covered from both sides by ultrasonic welding, and the heat transfer tubes 11 are arranged on both sides of the radiator 12 so as to protrude equally.

In the above embodiment, the refrigerant sent from the compressor flows in from one inlet of the heat transfer tube 11 and flows out from the other outlet. Then, the heat of the refrigerant is transmitted to the radiator 12 via the heat transfer tube 11 and exchanges heat with the fluid A flowing parallel to the plane of the radiator 12, and the fluid A is used for work. is there.

In particular, in the present invention, the two radiators 12 are provided on the surface 12a facing the straight pipe portion 11a of the heat transfer tube 11 and along the longitudinal direction of the meandering heat transfer tube 11 in the entire circumferential direction of the heat transfer tube 11. Is covered and adhered from both sides, so that the heat of the refrigerant transmitted through the straight pipe portion 11a of the heat transfer pipe 11
2 easily. Therefore, the radiator 12
To the fluid A flowing along the flat surface, heat can be uniformly transmitted from the entire radiator 12 and positive heat transfer can be performed.

Since the radiator 12 is formed by combining two thin plates, it is possible to promote heat transfer by increasing the heat capacity, and of course, it is possible to increase the heat transfer tube 11 compared to the case of one radiator.
Can be easily adhered to the circumferential surface from both sides of the heat transfer tube 11.

Further, since the surface 12a of the heat radiator 12 is in close contact with the straight portion 11a of the heat transfer tube 11 from both sides, it is necessary to integrally join two heat radiators other than the heat transfer tube. As a result, the productivity can be improved, and the surface 12a of the heat radiator 12 is closely attached to a part of the circumferential surface of the straight pipe portion 11a of the heat transfer tube 11 so that the fluid A is disposed between the two opposed heat radiators 12. Can be formed, and not only can the operation be facilitated, but also the promotion of heat transfer to the fluid A can be further enhanced.

In the second embodiment, the two radiators 12 are closely attached to the straight pipe portion 11a of the heat transfer tube 11 from both sides and are integrally joined. Separately, they may be integrally adhered by ultrasonic welding.

(Embodiment 3) FIG. 5 shows a fourth embodiment of the present invention.
FIG. 6 is a side view of a heat exchanger with tubes in one embodiment corresponding to the invention described in FIG. 6. FIG. 6 is another example of a heat exchanger with tubes in one embodiment corresponding to the invention described in claim 4 of the present invention. FIG. The invention of the third embodiment is different from the first and second embodiments in that a heat radiator made of a thin plate with a heat transfer tube adhered thereto is bent into a shape corresponding to an installation location to form a heat exchanger. Since only the present invention is different from the present invention, portions having the same configuration and operation and effect are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

In the heat exchanger shown in FIGS. 5 and 6, the substantially flat radiator 12 in the heat exchanger shown in the first or second embodiment is replaced by the heat exchange capacity required by the device incorporating the heat exchanger. And bent in a shape corresponding to the installation location. FIG. 5 shows a heat dissipating body 12 formed of a thin plate in which the heat transfer tubes 11 are in close contact with each other. FIG. 6 shows a radiator 12 made of a thin plate in which a heat transfer tube 11 is closely attached.
It is bent continuously in a zigzag in a U-shape. These heat exchangers allow the fluid to flow in parallel along the plane of the heat radiator 12. However, when the fluid flows so as to intersect the plane of the heat radiator 12 as shown by the dotted arrow B, the heat transfer tube 1
A large number of holes (not shown) through which a fluid passes are provided in a portion of the radiator 12 between the heat transfer tube 1 and the heat transfer tube 11.

In the above embodiment, the same operation and effect as those of the heat exchanger shown in the first or second embodiment can be obtained.

In particular, according to the present invention, as in the first or second embodiment, if the heat exchanger is a flat plate, it cannot meet the required heat exchange capacity of the equipment incorporating the heat exchanger and its installation location. At this time, since the heat radiator 12 can be easily bent into a predetermined shape, heat exchangers having various predetermined shapes including a flat shape can be formed and easily installed on various appliances.

(Embodiment 4) FIGS. 7 and 8 are perspective views of a heat exchanger with tubes according to an embodiment corresponding to the fifth aspect of the present invention. The invention of the fourth embodiment is characterized in that a large number of holes through which a fluid passes are provided in a portion of a radiator located between heat transfer tubes.
Since the present embodiment is different from the third embodiment only, portions having the same configuration and operation and effect are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

The radiator 12 shown in FIG. 7 has a heat transfer tube 1 at a portion of the radiator 12 located between the heat transfer tubes 11.
Cut-and-raised piece 13 through which fluid passes along a direction orthogonal to 1
Are provided. The heat dissipating body 12 shown in FIG. 8 has a large number of holes 14a having cut-and-raised pieces 13a through which a fluid passes in parallel with the heat transferring tube 11 at a portion of the heat dissipating body 12 located between the heat transfer tubes 11. Is provided. The fluid passes through the hole 14 or the hole 14a at either the solid arrow A flowing parallel to the plane of the radiator 12 or the dotted arrow B flowing across the plane of the radiator 12.

In the above-described embodiment, the same operation and effect as those of the heat exchanger shown in the first or second embodiment and the third embodiment can be obtained.

In particular, in the present invention, a turbulent flow is generated in the fluid A or the fluid B by passing the fluid through the large number of holes 14 or 14a having the cut and raised pieces 13. Therefore, the radiator 12 can promote heat transfer to the fluid A or the fluid B that has become turbulent.

In the fourth embodiment, a large number of holes 14 having cut-and-raised pieces 13 are provided. However, only holes may be provided within the intended range, and the shape of the holes may be square, elliptical, A slit or the like may be used. Further, in the embodiment shown in FIG. 8, a plurality of holes 14a are provided over the entire width of the radiator 12 in parallel with the heat transfer tubes 11, but a single hole 14a may be arranged in several stages in the longitudinal direction.

(Embodiment 5) FIG. 9 shows a sixth embodiment of the present invention.
It is a manufacturing process figure of the heat exchanger with a tube in one Embodiment corresponding to the invention as described in. Since the invention of the fifth embodiment relates to a method of manufacturing a heat exchanger employing the inventions of the first to fourth embodiments, parts having the same configuration and operation and effect are denoted by the same reference numerals and detailed description. And a heat exchanger employing the first embodiment will be described with an emphasis on different parts.

The heat exchanger employing the first embodiment has a heat transfer tube 11 through which a refrigerant flows, and is provided on the outer periphery of the heat transfer tube 11 so that the heat of the refrigerant transmitted through the heat transfer tube 11 is transferred to the heat exchanger. The heat transfer tube 11 is formed of a long tube having a predetermined shape, and the heat radiator 12 is formed of a thin plate having a predetermined shape. Reference numeral 12 denotes a surface 12a of the heat transfer tube 11 which faces the straight tube portion 11a and covers the surface of the heat transfer tube 11 in the circumferential direction along the longitudinal direction of the heat transfer tube 11 and is closely attached thereto.

In the first step, a long thin plate made of an aluminum alloy serving as the heat radiator 12 is wound around a drum (hoop material), and while the long thin plate is being drawn out by rotation, a predetermined shape is formed by pressing. Of the heat transfer tube 11 is cut continuously into a rectangle having a certain width and a certain length.
Substantially semicircular groove 1 as a specified position for positioning 1a
5 is formed. Subsequently, in the second step, a copper thin long circular tube is continuously bent in a meandering shape having a predetermined shape, cut into a predetermined length, and is formed of a long tube made in advance. The heat pipe 11 is arranged at a specified position by aligning the straight portion 12a with the groove 15 of the heat radiator 12 formed in the first step. Further, in the third step, the outer surface of the groove 15 which is the surface 12a of the heat radiator 12 facing the straight pipe portion 11a of the heat transfer tube 11 is narrowed by a jig, and the heat is transferred along the longitudinal direction of the heat transfer tube 11. The entire surface of the heat pipe 11 in the circumferential direction is covered and brought into close contact with an ultrasonic welding machine.

In the above manufacturing method, the heat transfer tube arranged in the second step in the groove 15 of the radiator 12 formed in the first step is connected to the third step.
In the process, the straight pipe portion 11a of the heat transfer tube 11 in the radiator 12
The heat exchanger can be easily manufactured because the groove 15 which is the surface 12a facing the surface of the heat transfer tube 11 only covers the entire surface of the heat transfer tube 11 in the circumferential direction along the longitudinal direction of the heat transfer tube 11.

That is, the heat dissipating body 12 is a single heat dissipating member, which is simply adhered to the entire surface in the circumferential direction of the heat transfer tube 11 along the longitudinal direction of the heat transfer tube 11 of a predetermined shape. First, a large number of radiating fins must be cut, and a large number of radiating fins must be lined up at regular intervals. Compared to a manufacturing method in which a U-shaped pipe is welded to the pipes on both sides of the radiation fins that are lastly penetrated and formed into a meandering shape, it is extremely easy to manufacture and productivity can be greatly improved.

Further, since one heat dissipating body 12 is in close contact with the heat transfer tube 11 by covering the entire surface in the circumferential direction of the heat transfer tube 11 along the plane of the heat transfer tube 11, the conventional heat dissipating member is in close contact with the tube. The heat transfer of the refrigerant to the radiator 12 through the heat transfer tube 11 is extremely large as compared with the case where the end faces of the large number of radiating fins are in close contact with the tubes.

The fluid A flowing along the plane of the radiator 12 exchanges heat with the entire peripheral surface of the heat transfer tube 11 via the radiator 12, so that the radiating fin through which air flows is different from the conventional one. There is no unevenness in heat radiation due to a front surface to which air is directly applied and a rear surface to which air is not applied to the tube located between the tubes.

Further, even if the outer peripheral portion is erroneously damaged in the manufacturing process, the single radiator 12 narrows a certain interval for air circulation unlike the conventional one, so that no serious trouble is caused. It can be handled easily, and productivity can be improved.

In the fifth embodiment, the heat transfer tubes 11
Surface 12a of heat radiator 12 facing straight pipe portion 11a
Thus, the entire surface of the heat transfer tube 11 in the circumferential direction is covered along the longitudinal direction of the heat transfer tube 11, but a part of the circumferential surface of the heat transfer tube 11 may be covered as long as the purpose is achieved. . Also,
Similarly, ultrasonic welding of the radiator 12 to the heat transfer tube 11
It may be a whole or a part in close contact. Further, in the fifth embodiment, the whole or a part of the welding is performed by using the ultrasonic welding machine. However, the welding machine and the welding method are not specified.

[0054]

As described above, according to the first aspect of the present invention, the heat transfer tube through which the refrigerant flows, and the heat transfer tube provided on the outer periphery of the heat transfer tube to transfer the heat of the refrigerant transmitted through the heat transfer tube are provided. ,
A radiator for transmitting fluid to be in contact with the heat transfer tube, wherein the heat transfer tube is formed of a long tube having a predetermined shape, the heat radiator is formed of a thin plate having a predetermined shape, and the radiator is opposed to the heat transfer tube. The surface of the heat transfer tube covers the surface in the circumferential direction of the heat transfer tube along the lengthwise direction of the heat transfer tube, and is closely adhered to the heat transfer tube. Uniform,
In addition to being able to communicate positively, handling is easy and productivity can be improved.

Further, the invention according to claim 2 is a heat transfer tube in which a refrigerant flows, and the heat transfer tube is provided on the outer periphery of the heat transfer tube, and transfers the heat of the refrigerant transmitted through the heat transfer tube to a fluid that comes into contact with the heat transfer tube. A radiator for transmitting the heat, wherein the heat transfer tube is formed of a long tube having a predetermined shape, the heat radiator is formed of a single thin plate having a predetermined shape, and the radiator is a surface facing the heat transfer tube. The heat transfer tube covers the surface in the circumferential direction of the heat transfer tube along the longitudinal direction of the heat transfer tube and is closely adhered to the heat transfer tube. The heat exchanger having a predetermined shape can be easily formed.

According to a third aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and the heat transfer tube is provided on the outer periphery of the heat transfer tube, and transfers the heat of the refrigerant transmitted through the heat transfer tube to a fluid that contacts the heat transfer tube. A radiator for transmitting the heat, the heat transfer tube is formed by a long tube having a predetermined shape, the heat radiator is formed by facing two thin plates having a predetermined shape, and the heat radiator is formed by a heat transfer tube. The heat transfer tube is covered and adhered to the heat transfer tube from both sides along the longitudinal direction of the heat transfer tube on the opposing surfaces. In addition, it is possible to use a structure closely attached to the heat transfer tube to fix the two radiators to each other, which is convenient and can improve the productivity.

According to a fourth aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and the heat transfer tube is provided on an outer periphery of the heat transfer tube, and transfers the heat of the refrigerant transmitted through the heat transfer tube to a fluid that contacts the heat transfer tube. A radiator for transmitting the heat, wherein the heat transfer tube is formed of a long tube having a predetermined shape, the heat radiator is formed of a thin plate having a predetermined shape, and the heat radiator is formed of a heat transfer tube on a surface opposed to the heat transfer tube. Along with the lengthwise direction of the heat transfer tube, the surface in the circumferential direction is covered and adhered, and it is folded into a shape according to the installation location of the fixture to be attached, and since one piece is used as a radiator, If the radiator is bent to have a predetermined shape, it can be easily adapted to various appliances.

Further, the invention described in claim 5 is the first invention.
The method according to any one of claims 1 to 4, wherein a plurality of holes through which a fluid passes or holes with cut-and-raised portions are provided in a portion of the radiator located between the heat transfer tubes. When the fluid passes through the hole or the cut-and-raised one-sided hole, a turbulent flow is generated in the fluid, and heat transfer from the radiator to the fluid can be promoted.

According to a sixth aspect of the present invention, there is provided a heat transfer tube through which a refrigerant flows, and the heat transfer tube is provided on the outer periphery of the heat transfer tube, and transfers the heat of the refrigerant transmitted through the heat transfer tube to a fluid that contacts the heat transfer tube. A first step of forming a radiator by cutting a thin plate into a predetermined shape, and the heat transfer tube having a predetermined shape at a prescribed position of the radiator formed in the first step. Conventionally, the manufacturing method comprises a second step of disposing and a third step of closely covering the surface of the heat transfer tube along the longitudinal direction of the heat transfer tube on the surface of the heat radiator opposite to the heat transfer tube. As compared with the manufacture of the heat exchanger of the first embodiment, the productivity can be greatly improved, and a heat exchanger having a large heat transfer to the fluid in contact with the radiator and easy to handle can be manufactured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat exchanger with tubes according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view of a main part of the heat exchanger with a tube according to the first embodiment.

FIG. 3 is a perspective view of a heat exchanger with a tube according to the second embodiment.

FIG. 4 is a sectional view of a main part of the heat exchanger with a tube according to the second embodiment.

FIG. 5 is a side view of the heat exchanger with a tube according to the third embodiment.

FIG. 6 is a side view of another example of the heat exchanger with tubes according to the third embodiment.

FIG. 7 is a perspective view of a heat exchanger with a tube according to the fourth embodiment.

FIG. 8 is a perspective view of another example of the heat exchanger with tubes in the fourth embodiment.

FIG. 9 is a manufacturing process diagram of the heat exchanger with a tube according to the first embodiment of the present invention.

FIG. 10 is a perspective view of a conventional heat exchanger with a tube.

[Explanation of symbols]

 Reference Signs List 11 heat transfer tube 12 radiator 12a surface 13, 13a cut-and-raised piece 14, 14a hole 15 groove

Continuation of the front page (72) Inventor Norihito Hamane 4-5-2, Takaidahondori, Higashiosaka-shi, Osaka Matsushita Refrigerator Co., Ltd. F-term (reference) 3L065 AA09 3L103 AA01 AA37 BB42 BB44 CC22 CC28 DD06 DD33

Claims (6)

[Claims] A heat transfer pipe through which a refrigerant flows, and a radiator provided on an outer periphery of the heat transfer pipe and transmitting heat of the refrigerant transmitted through the heat transfer pipe to a fluid in contact with the heat transfer pipe. The heat tube is formed by a long tube having a predetermined shape, the radiator is formed by a thin plate having a predetermined shape, and the heat radiator is a heat transfer tube along a longitudinal direction of the heat transfer tube on a surface opposed to the heat transfer tube. A heat exchanger with tubes formed by covering the surface in the circumferential direction and closely contacting it. 2. A heat transfer tube, in which a refrigerant flows inside, and a radiator provided on an outer periphery of the heat transfer tube and transmitting heat of the refrigerant transmitted through the heat transfer tube to a contact fluid. The heat tube is formed by a long tube having a predetermined shape, the heat radiator is formed by a single thin plate having a predetermined shape, and the heat radiator is formed along a longitudinal direction of the heat transfer tube on a surface opposed to the heat transfer tube. A heat exchanger with a tube, which covers the surface of the heat transfer tube in the circumferential direction and is closely attached. 3. A heat transfer tube through which a refrigerant flows, and a radiator provided on an outer periphery of the heat transfer tube and transmitting heat of the refrigerant transmitted through the heat transfer tube to a fluid in contact with the heat transfer tube. The heat tube is formed by a long tube having a predetermined shape, the heat radiator is formed by facing two thin plates having a predetermined shape, and the heat radiator is formed by a heat transfer tube having a surface facing the heat transfer tube. A heat exchanger with a tube, which covers and closely adheres to the circumferential surface of the heat transfer tube from both sides along the shaku direction. 4. A heat transfer tube in which a refrigerant flows, and a radiator provided on an outer periphery of the heat transfer tube and transmitting heat of the refrigerant transmitted through the heat transfer tube to a contact fluid. The heat tube is formed by a long tube having a predetermined shape, the radiator is formed by a thin plate having a predetermined shape, and the heat radiator is a heat transfer tube along a longitudinal direction of the heat transfer tube on a surface opposed to the heat transfer tube. A heat exchanger with a tube, which covers the surface in the circumferential direction and is tightly folded, and is bent into a shape according to the installation location of the equipment for mounting the heat exchanger. 5. The heat transfer body according to claim 1, further comprising a plurality of holes or cut-and-raised holes provided in a portion of the radiator located between the heat transfer tubes. A heat exchanger with tubes as described. 6. A heat transfer tube having a heat transfer tube through which a refrigerant flows, and a heat radiator provided on an outer periphery of the heat transfer tube and transmitting heat of the refrigerant transmitted through the heat transfer tube to a contact fluid. A first step of cutting the thin plate into a predetermined shape to form the radiator, and a second step of disposing the heat transfer tube having a predetermined shape at a prescribed position of the radiator formed in the first step;
A step of covering the heat transfer tube in a longitudinal direction with the surface of the heat radiator facing the heat transfer tube and covering the circumferential surface of the heat transfer tube, and bringing the heat transfer tube into close contact with the heat transfer tube.