KR20140025201A

KR20140025201A - Heat exchanger

Info

Publication number: KR20140025201A
Application number: KR1020120091644A
Authority: KR
Inventors: 원철호; 오세권; 문준호
Original assignee: 원철호; 오세권
Priority date: 2012-08-22
Filing date: 2012-08-22
Publication date: 2014-03-04

Abstract

The present invention relates to a heat exchanger including a case (10) which has an external circulation flow passage (12) for circulating a first fluid inside to function as an external circulation pipe; and an internal circulation pipe (20) installed inside the external circulation flow passage (12) with an internal flow passage for circulating a second fluid which exchanges heat with the first fluid. The case (10) has a flow passage forming plate (11) inside. The flow passage forming plate (11) is spirally curved into a swirl of which the diameter increases from the center of the case (10) to form the external circulation flow passage (12). Therefore, the present invention enables users to manufacture a double pipe heat exchanger with a simple structure by installing the spiral flow passage forming plate inside the hexahedral case; and inserting and fixing the internal circulation pipe into the external circulation flow passage which is formed by the flow passage forming plate.

Description

Heat Exchanger {HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly, the outside fluid while the fluid supplied to the inside and the inside of the building, the air conditioner air supply and exhaust, or installed inside the hot air heater such as boiler or air conditioner to move smoothly And a heat exchanger for performing heat exchange with.

A heat exchanger is a device that allows heat exchange between fluids having different temperatures, and each fluid having different temperatures flows separately from each other, and performs heat exchange by heat conduction or radiation effects between the fluids.

Such heat exchangers are widely used in various types of hot air heaters such as boilers and air conditioners.

The double tube heat exchanger in which the inner circulation tube is integrally combined inside the outer circulation tube having different diameter among the heat exchangers to separate the flow of the fluid into the outer circulation tube and the inner circulation tube, and to increase the heat exchange area. It is manufactured by integrating the outer circulation tube and the inner circulation tube in a coil shape.

Accordingly, since the double tube heat exchanger according to the prior art is twisted in a coil shape, the volume thereof increases, thereby increasing the volume of various hot air heaters such as a boiler or an air conditioner on which the heat exchanger is mounted.

In particular, as the volume of the heat exchanger increases, the volume of the domestic boiler or air conditioner installed indoors occupies a lot of space, and there is a problem in that installation and movement are inconvenient.

In order to solve this problem, the present applicant has a heat exchanger installed inside the outer circulation pipe in the Republic of Korea Patent Registration No. 10-0854098 (August 26, 2008, hereinafter referred to as 'Patent Document 1') It has been filed and registered.

However, the heat exchanger according to Patent Document 1 has a problem in that manufacturing work is difficult and workability is deteriorated, as the work to install the inner circulation pipe inside the outer circulation pipe is performed.

In addition, since the heat exchanger according to Patent Document 1 is formed in a spiral shape, there is a problem of being deformed or damaged by an impact or vibration applied from the outside during movement and installation work.

Republic of Korea Patent Registration No. 10-0854098 (August 26, 2008)

The present invention is to solve the above problems, an object of the present invention to provide a heat exchanger that can smoothly move the fluid circulating therein to improve the heat exchange efficiency.

Another object of the present invention is to provide a heat exchanger capable of improving the heat exchange efficiency by maximizing the surface area of the internal circulation pipe corresponding to the external circulation path.

Still another object of the present invention is to provide a heat exchanger capable of easily performing an installation operation of an internal circulation pipe inside an external circulation passage and preventing damage and deformation due to external shock or vibration.

According to a feature of the present invention for achieving the object as described above, the present invention is provided inside the case and the outer circulation passage to form an external circulation passage through which the first fluid circulates to perform an external circulation tube function; And an inner circulation tube in which a flow path through which the second fluid performing heat exchange with the first fluid circulates is formed, and the inside of the case is formed to be bent in a spiral of spiral shape, the diameter of which gradually increases from the center of the case. The flow path forming plate is formed to form the external circulation flow path.

At each end of the outer circulation passage, an inlet hole for introducing the first fluid and a discharge hole for discharging the first fluid to the outside are formed, and the second fluid is supplied into the inner circulation tube at both ends of the inner circulation pipe. And a discharge hole through which the supply hole and the second fluid are discharged to the outside of the heat exchanger are formed.

The inner circulation pipe is formed with an outer diameter smaller than the minimum inner diameter of the outer circulation flow path and is inserted into and fixed to the center of the outer circulation flow path so that the center is located on the same plane as the outer circulation flow path.

The outer peripheral surface of the inner circulation tube is characterized in that the projection is formed to increase the contact area with the first fluid, and to slow down the circulation speed of the first fluid.

The heat exchanger is connected to the outer circulation passage and the inner circulation pipe provided in each heat exchanger, respectively, a plurality of them are stacked up and down, or arranged in parallel on the same plane is characterized in that installed in one hot air.

As described above, the present invention is to install a spiral-shaped flow path forming plate inside the hexahedral case, and to insert and fix the inner circulation pipe inside the outer circulation flow path formed by the flow path forming plate to manufacture a simple double-tube heat exchanger. Can be.

Accordingly, the present invention smoothly moves the first fluid circulating along the outer circulation passage and the second fluid circulating along the inner circulation tube, thereby performing heat exchange, thereby improving heat exchange efficiency.

In addition, the present invention by installing a flow path forming plate and the inner circulation tube formed in a spiral shape inside the case having a constant volume, it is possible to reduce the total volume of the heat exchanger to minimize the area occupied by the heat exchanger inside the hot air.

In addition, the present invention can be easily manufactured as compared with the conventional method of installing the inner circulation tube in the outer circulation tube by installing the flow path forming plate and the inner circulation tube inside the case can improve the workability.

In addition, the present invention is installed so that the center of the inner circulation pipe is located on the same plane as the center of the outer circulation flow path can be made thinner by minimizing the thickness of the heat exchanger to further reduce the space occupied by the heat in the room efficiency of space utilization Can be increased.

In addition, the present invention can improve the heat exchange efficiency while minimizing the total volume of the heat exchanger to connect a plurality of heat exchangers up and down and / or in parallel to easily produce a heat exchanger of a larger size and capacity, it is possible to maintain efficient heat exchange performance Has the effect.

1 is a perspective view of a heat exchanger according to a first embodiment of the present invention;
2 is a plan sectional view of the heat exchanger shown in FIG. 1;
3 is a side cross-sectional view of the heat exchanger shown in FIG. 1;
4 is a plan sectional view of a heat exchanger according to a second embodiment of the present invention;
5 and 6 are side views of a heat exchanger according to a third embodiment of the present invention;
7 is a plan view of a heat exchanger according to a fourth embodiment of the present invention.

Hereinafter, a heat exchanger according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a heat exchanger according to a first embodiment of the present invention, FIG. 2 is a plan sectional view of the heat exchanger shown in FIG. 1, and FIG. 3 is a side sectional view of the heat exchanger shown in FIG. 1.

As illustrated in FIGS. 1 to 3, the heat exchanger according to the first embodiment of the present invention forms an external circulation passage 12 therein to perform an external circulation tube function to perform a case 10 and an inside of the case 10. It includes an inner circulation pipe 20 is installed in the outer circulation passage 12 formed in the.

The case 10 is formed in a hexahedral shape having a height lower than that of the horizontal and vertical lengths, and the flow path forming plate 11 forming a spiral outer circulation passage 12 inside the case 10 to perform an external circulation tube function. ) Is installed.

That is, the flow path forming plate 11 is formed by bending in a spiral of a spiral shape in which the diameter gradually increases from the center of the case 10, and is disposed in the case 10 in the vertical direction.

Accordingly, the flow path forming plate 11 forms an outer circulation passage 12 in a spiral shape from the inner center of the case 10 toward the outer side, and forms a heat medium or a refrigerant along the outer circulation passage 12 formed as described above. The first fluid moves.

Here, both ends of the outer circulation passage 12 may have inlet holes 13 through which the first fluid is introduced and discharge holes 14 through which the first fluid circulated along the outer circulation passage 12 is discharged to the outside. Can be.

For example, as shown in FIGS. 1 and 3, an inlet hole 13 may be formed in a central upper portion of the case 10, and an outlet hole 14 may be formed in one side of the case 10.

On the other hand, as shown in Figure 2, the discharge hole 14 'is formed in the upper portion of the center of the case 10 in accordance with the circulating direction of the fluid, the inlet hole 13' is formed on one side of the case 10 It may be changed as much as possible.

The inner circulation pipe 20 forms a flow path through which the second fluid that undergoes heat exchange is moved by the first fluid flowing through the outer circulation path 12.

To this end, the inner circulation pipe 20 is formed in a spiral shape so as to correspond to the outer circulation flow path 12 having a space formed therein, and is inserted and fixed inside the flow path forming plate 11.

Here, the inner circulation pipe 20 is preferably formed with an outer diameter smaller than the minimum inner diameter of the outer circulation passage (12).

At both ends of the inner circulation pipe 20, the second fluid circulated along the flow path inside the supply hole 21 and the inner circulation pipe 20, in which the second fluid is supplied into the inner circulation pipe 20, is located outside the heat exchanger. The discharge hole 22 discharged to the can be formed.

For example, as illustrated in FIGS. 1 and 3, a supply hole 21 is formed at an outer end of the inner circulation pipe 20, and a discharge hole 22 is formed at the center end of the inner circulation pipe 20. This can be formed.

Of course, as shown in FIG. 2, a supply hole 21 ′ is formed at the center end of the inner circulation pipe 20 according to the circulating direction of the fluid, and a discharge hole is formed at the outer end of the inner circulation pipe 20. 22 ') may be formed.

Here, the inlet hole 13 or the outlet hole 14 of the outer circulation passage 12 formed on one side of the case 10 and the supply hole 21 or the discharge hole formed on the outside of the inner circulation pipe 20 ( 22 may be arranged in a direction perpendicular to each other.

And the inner circulation pipe 20 is inserted into the center of the outer circulation passage 12 is fixed so that the center is located on the same plane as the outer circulation passage (12).

As described above, the present invention can install a spiral flow path forming plate inside the hexahedron case, and insert and fix the inner circulation pipe inside the outer circulation flow path formed by the flow path forming plate to manufacture a double pipe heat exchanger having a simple structure. .

In addition, the present invention can easily produce a heat exchanger of a larger size and capacity by improving the heat exchange efficiency while minimizing the total volume of the heat exchanger, it is possible to maintain an efficient heat exchange performance.

On the other hand, the present invention, contrary to the above, according to the use of the heat exchanger circulates the first fluid, such as the heat medium or the refrigerant in the inner circulation pipe, and circulates the second fluid heat exchanged by the first fluid through the external circulation passage It can be changed to make.

In addition, the present invention may be modified to form the flow path forming plate and the inner circulation tube in a polygonal shape such as an octagonal shape or a hexagonal shape as well as a spiral shape.

In addition, the present invention by arranging the inlet and outlet holes of the outer circulation flow path and the supply and discharge holes of the inner circulation pipe in the vertical direction, respectively, it is possible to prevent the various pipes connected to the heat exchanger to be entangled or interfere with each other. In addition, the piping connection of the air conditioner can be made more easily, and the arrangement of the piping can be made simple.

4 is a plan sectional view of a heat exchanger according to a second embodiment of the present invention.

The heat exchanger according to the second embodiment of the present invention is the same as the configuration of the heat exchanger according to the first embodiment, except that the first and second screw members 23 and 24 are disposed on the outer circumferential surface of the inner circulation pipe 20 and inside. Prepared.

The first screw member 23 is formed in a spiral shape integrally with the outer circumferential surface of the inner circulation tube 20 to increase the contact area between the inner circulation tube 20 and the first fluid circulating along the outer circulation passage 12. And slows the circulation speed of the first fluid.

The second screw member 24 is formed in a spiral shape and inserted into the inner circulation tube 20. The second screw member 24 serves to increase the contact area with the second fluid circulating along the inner circulation pipe 20 and to slow down the circulation speed of the second fluid.

Accordingly, the present invention can increase the heat exchange efficiency between the fluid using the outer peripheral surface and the first and second screw members provided in the inner circulation tube.

On the other hand, the present invention may be modified to form a plurality of the first screw member 23 on the outer circumferential surface of the inner circulation pipe 20 in a ring shape as well as a spiral shape.

In addition, the present invention may be modified to include only one of the first and second screw members 23 and 24.

5 and 6 are side cross-sectional views of a heat exchanger according to a third embodiment of the present invention.

In the third embodiment of the present invention, in order to increase the capacity of the heat exchanger, a plurality of heat exchangers are stacked up and down.

For example, as shown in Figure 5, the case 10 of each heat exchanger is stacked up and down, the inlet hole (13, 13 ') and the discharge hole formed on both ends of the external circulation passage 12 of each heat exchanger The supply holes 21 and 21 'and the discharge holes 22 and 22' formed at both ends of the 14 and 14 'and the inner circulation pipe 20 are respectively connected to sequentially circulate the first and second fluids.

On the other hand, as shown in Figure 6, each inlet hole 13 formed in the outer circulation passage 12 of each heat exchanger is connected to each other, the discharge hole 14 is the first pipe disposed vertically outside the heat exchanger It may be connected to (25).

Similarly, each discharge hole 22 formed in the inner circulation pipe 20 of each heat exchanger may be connected to each other, and the supply hole 21 may be connected to a second pipe 26 vertically disposed outside the heat exchanger.

Accordingly, the present invention by stacking a plurality of heat exchangers up and down to connect the external circulation flow path and the internal circulation pipe to each other or to an external pipe, it is possible to perform a plurality of heat exchanger uniform heat exchange operation efficiency of the heat exchanger Can be increased, and optimum heat exchange performance can be maintained.

7 is a plan view of a heat exchanger according to a fourth embodiment of the present invention.

That is, in the fourth embodiment of the present invention, in order to increase the capacity of the heat exchanger, the plurality of heat exchangers are arranged on the same plane and connected in parallel.

For example, as shown in Figure 7, the supply hole of the inlet hole 13 and the discharge hole 14 and the inner circulation pipe 20 of the outer circulation passage 12 formed in the case 10 of each heat exchanger. The 21 and the discharge holes 22 are connected to each other to sequentially circulate the first and second fluids.

Accordingly, the present invention by placing a plurality of heat exchangers in parallel on the same plane to connect the external circulation flow path and the inner circulation pipe to each other, a plurality of heat exchangers can perform a uniform heat exchange operation to increase the efficiency of the heat exchanger It is possible to maintain the optimum heat exchange performance.

Meanwhile, the present invention may be modified to further increase the capacity of the heat exchanger by mixing the configurations described in the third and fourth embodiments, respectively, and stacking the plurality of heat exchangers up and down, and simultaneously placing them in parallel on the same plane.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is applied to a technique for manufacturing a double-tube heat exchanger having a simple structure by installing a spiral flow path forming plate inside a hexahedron case and inserting and fixing an inner circulation pipe inside an external circulation flow path formed by the flow path forming plate. .

The present invention can be applied to heat exchanger technology installed inside and outside the building, air supply and exhaust of the air conditioner, or various types of hot air heaters such as boilers and air conditioners.

10: case 11: flow path forming plate
12: External circulation passage 13: Inlet
14: outlet 20: internal circulation pipe
21: supply hole 22: discharge hole
23: first screw member 24: second screw member
25: first pipe 26: second pipe

Claims

A case 10 which performs an external circulation tube function by forming an external circulation passage 12 through which the first fluid circulates;
And an inner circulation pipe 20 installed inside the outer circulation path 12 and having a flow path through which a second fluid for performing heat exchange with the first fluid circulates.
Inside the case 10, a flow path forming plate 11 is formed to be bent in a spiral of a spiral shape gradually increasing in diameter from the center of the case 10 to form the external circulation passage 12. Heat exchanger made.

The method of claim 1,
At both ends of the outer circulation passage 12, inflow holes 13 and 13 'into which the first fluid is introduced and discharge holes 14 and 14' through which the first fluid is discharged to the outside are formed, respectively.
At both ends of the inner circulation pipe 20, supply holes 21 and 21 ′ in which the second fluid is supplied into the inner circulation pipe 20 and discharge holes 22 in which the second fluid is discharged to the outside of the heat exchanger 22. , 22 ') is formed.

The method of claim 1,
The inner circulation pipe 20 is formed at an outer diameter smaller than the minimum inner diameter of the outer circulation passage 12 so that the center of the outer circulation passage 12 is located at the same plane as the outer circulation passage 12. Heat exchanger, characterized in that inserted and fixed.

The method of claim 1,
At least one of the inner and outer circumferential surfaces of the inner circulation pipe 20 may include a screw member to increase the contact area with the first fluid or the second fluid and to slow down the circulation speed of the first fluid or the second fluid. Heat exchanger, characterized in that provided.

5. The method according to any one of claims 1 to 4,
The heat exchanger is connected to the outer circulation passage 12 and the inner circulation pipe 20 provided in each heat exchanger, respectively, a plurality of them are stacked up and down, or arranged in parallel on the same plane heat exchanger, characterized in that the heat exchanger group.