KR102169155B1 - Heat exchager using swirl type tube - Google Patents

Abstract

According to the present invention, disclosed is a heat exchanger using a swirl-shaped tube. More specifically, the heat exchanger comprises: a housing having upper and lower covers and a heat medium inlet, into which a heat medium is introduced, on one side thereof; a heat medium discharge tube formed on the upper cover to discharge the heat medium from the inside of the housing; a working fluid inlet tube into which a working fluid is introduced while vertically penetrating an edge of the housing; the swirl-shaped tube having one end communicating with the working fluid inlet tube, and bent inward in a swirl shape; and a working fluid discharge tube penetrating the heat medium discharge tube and the housing, and communicating with the other end of the swirl-shaped tube to discharge the working fluid. In the heat exchanger for exchanging heat between the heat medium in the housing and the working fluid passing through the swirl-shaped tube, the swirl-shaped tubes are stacked in a vertical direction, and each of the swirl-shaped tubes is bonded to each other to form an integrated swirl-shaped tube body. Upper and lower ends of the swirl-shaped tube body are formed in a structure bonded to the upper and lower covers, respectively. Therefore, the heat medium introduced into the housing flows along a swirl-shaped path formed inside the swirl-shaped tube body to have heat exchange, and then is discharged through the heat medium discharge tube. According to the present invention, the heat exchanger can be manufactured with a simple structure and a small size at reduced manufacturing costs.

Description

Heat exchanger using swirl type tube {Heat exchager using swirl type tube}

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger using a vortex tube capable of heating, cooling, vaporizing or liquefying a working fluid through heat exchange between a working fluid flowing through a plurality of stacked vortex tubes and a heat medium. will be.

Natural gas (NG), a low-pollution energy source that is widely used in real life, is very bulky at room temperature, making it difficult to transport and store. Therefore, to facilitate storage and transport, it is converted into liquefied natural gas (hereinafter referred to as LNG), which is in a cryogenic liquefied state, occupying only 1/600 of the volume of gas, and transported and stored.

Since liquefied natural gas is in a liquefied state, it cannot be used immediately, so a vaporizer that converts it into gaseous natural gas through heat exchange is required.

Two substances exist inside the vaporizer. In the case of LNG, heat is supplied to evaporate, and in the case of the heat medium flowing through the heater tube, heat is taken away and liquefied or the temperature decreases. The temperature of LNG is about -163°C, and steam or hot water can be used mainly as a heat medium. In the case of hot water, glycol propylene is mixed.

Including such a vaporizer, heat exchangers using heat exchange are used in all fields of industry. The heat exchanger is used not only for vaporizing liquid, but also for heating, cooling, or liquefying the working fluid.

In most heat exchangers, the key is to increase the contact area and contact time so that heat exchange between the heat medium and the working fluid occurs actively so that heat exchange occurs within a short time.

For this purpose, as in the prior art below, a tube through which the working fluid flows is installed in a spiral, coil, or spiral shape, and heat exchange is performed while passing the heat medium to the outside of the tube.

At this time, various attempts have been made to improve heat exchange efficiency by variously changing the shape of the tube or overlapping one or more tubes.

However, in the case of the prior art, even if a plurality of tubes are used, there is a gap between the tubes, so that a space divided by separate partition walls is created and each tube is accommodated in each space.

This complicates the structure of the heat exchanger and has a problem of increasing the scale and weight in order to handle a relatively large capacity.

In addition, there is a problem in that the heat exchange tube is damaged or damaged when used for a long period of time due to external vibrations or shocks such as ships.

In addition, there has been a demand for structural changes to improve heat exchange efficiency.

Republic of Korea Patent Laid-Open Patent 10-2016-0139530 (2016.12.7.) "Heat exchanger equipped with a baffle and a spacing plate" Republic of Korea Patent Publication 10-2016-0139528 (2016.12.7.) "Pluggable spiral flow type heat exchanger" Korean Patent Registration 10-1677605 (2016.11.14.) "Swirl type heat exchanger"

Accordingly, the present invention is to solve the above-described problem, and an object of the present invention is to have a structure in which one or more spiral tubes are superimposed, but each tube has a spiral tube body of a structure in which each tube is in close contact with each other. It is to provide a heat exchanger using a vortex tube capable of guiding the flow of the heat medium without a partition wall.

Another object of the present invention is to provide a heat exchanger using a vortex tube having a structure capable of preventing damage or breakage of the tube by external or self-vibration or shock, such as a ship, while separable to enable internal washing. will be.

The heat exchanger using a vortex tube according to the present invention for achieving the above object includes a housing having an upper cover and a lower cover, and a heat medium inlet through which a heat medium is introduced, and a heat medium formed on the upper cover to remove the heat medium from the inside of the housing. A heat medium discharge pipe to be discharged, a working fluid inlet pipe through which the working fluid is introduced while vertically penetrating the edge of the housing, a vortex tube whose one end is in communication with the working fluid inlet pipe and bent in a vortex shape, and the heat medium A heat exchanger that includes a discharge pipe and a working fluid discharge pipe that passes through the housing and communicates with the other end of the swirl tube to discharge the working fluid, so that heat exchange occurs between the heat medium in the housing and the working fluid passing through the swirl tube In the group, the swirling tube is a plurality of stacked in the vertical direction and each is joined to each other to form an integrated swirling tube body, the upper and lower ends of the swirling tube body is bonded to the upper cover and the lower cover, respectively. Consisting of a structure, the heat medium introduced into the housing may flow along a vortex path formed inside the vortex tube body, heat exchange occurs, and then be discharged through the heat medium discharge pipe.

In this case, the heat medium inlet may be formed adjacent to the working fluid inlet pipe.

In addition, the working fluid inlet pipe may be provided to be bonded to the inner surface of the housing so that the heat medium introduced through the heat medium inlet may be guided to go directly into the spiral tube body.

In addition, elastic pads for sealing and vibration-proofing may be further provided between the upper and upper covers of the spiral tube body or between the lower and lower covers, respectively.

According to the present invention described above, there are the following effects.

First, since a plurality of spiral tubes are pressed and bonded to each other to form an integrated spiral tube body, there is no need to divide the inside of the housing into a separate baffle. That is, the structure of the heat exchanger is simplified, the size can be reduced, and the manufacturing cost is also reduced.

Second, since the heat medium flows along the trajectory of the vortex, it is possible to increase the heat exchange time and contact area as much as possible, greatly improving the heat exchange efficiency.

Third, it is possible to clean the inside of the housing by opening the upper cover or the lower cover. Or it is possible to take out the swirling tube body and wash it, so it is easy to maintain.

Fourth, since the top and bottom of the spiral tube body are supported by elastic pads, respectively, the spiral tube can be protected from external or self-vibration or impact.

1 is a perspective view showing the appearance of a heat exchanger using a swirl tube according to an embodiment of the present invention
Figure 2 is an internal perspective view of the present invention shown in Figure 1
Figure 3 is a longitudinal sectional view of the present invention shown in Figure 1
Figure 4 is a cross-sectional view of the present invention shown in Figure 1
Figure 5 is a perspective view showing the spiral tube body of the present invention shown in Figure 2

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited thereto. Further, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

1 is a perspective view showing the exterior of a heat exchanger using a swirl tube according to an embodiment of the present invention, and FIG. 2 is an internal perspective view of the present invention shown in FIG.

Referring to the diagram, the present invention may be configured to include a housing 100, a heat medium discharge pipe 200, a working fluid inlet pipe 300, a spiral tube 400, and a working fluid discharge pipe 500.

First, the housing 100 will be described.

The housing 100 is a hollow cylinder with an empty inside so that heat exchange can occur therein. In addition, the upper and lower portions of the housing 100 may be sealed with an upper cover 110 and a lower cover 120, respectively.

The upper cover 110 and the lower cover 120 may have a structure that can be fastened or disassembled, respectively, but only the upper cover 110 has a structure that can be assembled and disassembled, and the lower cover 120 is the housing It may be a structure integrated with (100). This is for a structure that is easy to clean the inside of the housing 100.

Alternatively, the lower cover 120 may be integrally formed with the housing 100 and may have a structure in which only the upper cover 110 can be fastened or disassembled.

In addition, at least one heat medium inlet 130 may be formed on an outer peripheral surface of one side of the housing 100 so that the heat medium can be introduced from the outside.

For reference, the housing 100 preferably has a structure in which an insulating material (not shown) is attached to minimize heat dissipation to the outside.

Next, the heat medium discharge pipe 200 will be described.

The heat medium discharge pipe 200 is a pipe for discharging the heat medium to the outside after performing heat exchange while the heat medium flowing into the housing 100 through the heat medium inlet 130 flows, and may be formed in a circular tube shape.

As will be described later, since the heat medium flows in from one side of the housing 100 and flows to the center, heat exchange is performed and discharged from the center of the housing 100, so the heat medium discharge pipe 200 is located in the center of the housing 100. It is equipped.

At this time, the lower end of the housing 100 may be opened and the upper end may have a closed pipe shape, and are coupled to communicate with the upper cover 110.

A separate branch pipe 210 may be formed on the side of the heat medium discharge pipe 200 to control the discharge direction of the discharged heat medium.

The discharged heat medium may be processed and circulated to be sent back to the heat medium inlet 130.

Next, the working fluid inlet pipe will be described with reference to FIGS. 3 and 4 together.

3 is a longitudinal sectional view of the present invention shown in Fig. 1, and Fig. 4 is a cross-sectional view of the present invention shown in Fig. 1. In this case, in FIG. 4, the solid arrow indicates the flow of the working fluid, and the dotted arrow indicates the flow of the heat medium.

The working fluid inlet pipe 300 is a pipe through which a working fluid intended to perform heat exchange can be introduced.

The working fluid inlet pipe 300 is installed so as to be accommodated therein by penetrating the housing 100 vertically as shown.

In this case, the working fluid inlet pipe 300 is preferably disposed at the edge of the housing 100. That is, it is installed vertically inside the housing 100 while penetrating the edge of the upper cover 110, but preferably, it is located close to the inner surface of the housing 100 or is coupled to the inner surface to be completely bonded. It is good.

In addition, the lower end of the working fluid inlet pipe 300 may contact the lower cover 120 in a sealed state or coupled to the lower cover 120. In the case of coupling, a male thread is formed at a part of the lower end of the working fluid inlet pipe 300, and after passing through the lower cover 120, it may be fastened and fixed with screws.

However, the method of fastening the working fluid inlet pipe is not limited thereto, and any method capable of assembling or disassembling is possible.

On the other hand, the working fluid inlet pipe 300 is preferably provided adjacent to the heat medium inlet 130.

Therefore, since it is made in such a structure, the heat medium introduced into the heat medium inlet 130 immediately meets the working fluid inlet pipe 300, and first heat exchange with the working fluid received in the working fluid inlet pipe 300 is made. I can.

And the heat medium goes directly to the inlet connection part 410 of the working fluid inlet pipe 300 and the swirl tube 400, and flows around the outside of the swirl tube 400 along the swirl tube 400. Secondary heat exchange with the flowing working fluid is carried out continuously.

In addition, after the heating medium rotates between the outer side of the vortex tube 400 and the inner surface of the housing 100 once, the heating medium flows inside while drawing the trajectory of the vortex along the inner side of the vortex tube 400, At this time, the tertiary heat exchange is performed.

In addition, when the working fluid inlet pipe 300 and the inner surface of the housing 100 are spaced apart from each other, a part of the introduced heat medium is formed into a gap formed between the inner surface of the housing 100 and the working fluid inlet pipe 300. It may also be introduced and merged into the inside of the swirl tube 400.

Next, with reference to Figure 5 will be described with respect to the technical feature of the spiral tube 400 of the present invention. Figure 5 is a perspective view showing the spiral tube body of the present invention shown in Figure 2;

The spiral tube 400 is formed in a shape in which a linear tube is bent in a spiral shape as shown. In other words, it is a shape that spirals in one plane and is substantially similar to the shape of a mosquito coil.

At this time, the linear tube is bent, but it is manufactured so that it is not in close contact with each other and is bent while maintaining a constant interval. This is because the heat medium flows through the gap formed between these tubes.

An inlet connection part 410 is formed at one end of the spiral tube 400 to communicate with the side surface of the working fluid inlet pipe 300. Accordingly, the working fluid flows from the working fluid inlet pipe 300 to the swirl tube 400.

In addition, a discharge connection part 420 is formed at the other end of the spiral tube 400 to communicate with the side surface of the working fluid discharge pipe 500 to be described later to discharge the heat medium.

Here, only one of the swirl-shaped tubes 400 may be installed, but a plurality of the spiral tubes 400 may be stacked vertically in the same shape and size.

At this time, each of the stacked spiral tubes 400 may be bonded to each other to form an integrated spiral tube body 400A. This can function like a bulkhead that prevents the heat medium from flowing across the vortex tube.

In addition, the inlet connection portion 410, which is one end of each swirl tube 400, may be connected in a row along the longitudinal direction of the working fluid inlet pipe 300, respectively.

However, it is preferable that the inlet connection portions 410 to which each swirl tube 400 is connected to the working fluid inlet pipe 300 are alternately connected in a zigzag shape. In other words, it is preferable to be connected to the working fluid inlet pipe 300 so that the odd-numbered inflow connector (410-1, etc.) and the even-numbered inflow connector (410-2, etc.) are staggered from each other.

On the other hand, it is preferable that the upper end of the spiral tube body 400A is joined to the upper cover 110, and the lower end is joined to the lower cover 120. This is because the heat medium introduced into the housing 100 is to guide only the vortex flow path formed along the inside of the vortex tube body 400A.

Next, the working fluid discharge pipe 500 will be described.

The working fluid discharge pipe 500 is a pipe through which the working fluid can be discharged after performing heat exchange.

The working fluid discharge pipe 500 is installed so as to be accommodated therein by passing through the housing 100 vertically as shown.

In this case, the working fluid discharge pipe 500 is preferably disposed in the center of the housing 100. That is, while passing through the center of the upper cover 110, it is installed vertically in the interior of the housing 100.

It is preferable to be accommodated in the housing 100 while passing through the center of the heat medium discharge pipe 200 as shown.

That is, since both the heat medium discharge pipe 200 and the working fluid discharge pipe 500 are preferably located in the center of the housing 100, they are not formed at different positions, but operate more than the inner diameter of the heat medium discharge pipe 200 By reducing the outer diameter of the fluid discharge pipe 500 and arranging them to overlap each other, the heat medium may be discharged between the heat medium discharge pipe 200 and the working fluid discharge pipe 500.

Accordingly, heat exchange can be performed inside the heat medium discharge pipe 200 until the moment the working fluid is discharged through the working fluid discharge pipe 500.

For reference, even in the case of the discharge connection part 420 connected to the working fluid discharge pipe 500, the odd-numbered discharge connection part 420-1 and the even-numbered discharge connection part 420-2 are staggered from each other. It is good to be connected to the working fluid discharge pipe (500).

Meanwhile, as another embodiment of the present invention, an elastic pad 600 for sealing and vibration is provided between the upper and upper cover 110 and between the lower and lower cover 120 of the spiral tube body 400A, respectively. It is good to be.

As described above, the upper and lower ends of the spiral tube body 400A may be coupled to the upper cover 110 and the lower cover 120 of the housing 100, respectively, but it is preferable to prevent external vibrations. It is preferable to provide the elastic pad 600 in order to vibration-proof the swirling tube body 400A and opening the upper cover 110 to clean the swirling tube body 400A.

That is, by being installed in a state in which the upper and lower ends of the swirling tube body 400A are in close contact with the elastic pad 600, it is possible to reduce the transmission of external vibration to the swirling tube body 400A, The upper cover 110 may be opened to clean the swirl tube body 400A.

Hereinafter, an operating state of the present invention will be described with reference to FIG. 4.

When the heat medium is introduced through the heat medium inlet 130, the heat medium flows and fills the interior of the housing 100 along the above-described path. That is, it flows toward the center of the housing 100 along a swirl path formed inside the swirl tube body 400A.

The heat medium collected in the center of the housing 100 is discharged to the outside through the heat medium discharge pipe 200 and then cooled or heated, and then re-introduced through the heat medium inlet 130 and circulated.

At the same time, the working fluid is introduced through the working fluid inlet pipe 300 and flows through the inlet connection part 410 along the swirl tube 400.

The working fluid flows along the trajectory of the spiral tube 400 to exchange heat with the heat medium, reaches the center of the housing, and then is discharged through the working fluid discharge pipe 500 through the discharge connection part 420.

As the heat medium moves through such a path, the contact area and contact time with the vortex tube body 400A increase to increase heat exchange efficiency, and since the vortex tube body 400A itself serves as a baffle, there is no need to install a separate baffle. .

Although the exemplary embodiments of the present invention have been described above with reference to the drawings, a person of ordinary skill in the field to which the present invention belongs will be able to perform various applications and modifications within the scope of the present invention based on the above contents. Therefore, the scope of the present invention is limited to the described embodiments and should not be determined, and should not be determined by the claims to be described later, but also by those equivalents to the claims.

100: housing 110: upper cover
120: lower cover 130: heat medium inlet
200: heat medium discharge pipe 210: branch pipe
300: working fluid inlet pipe
400: swirl tube 400A: swirl tube body
410: inlet connection 420: discharge connection
500: working fluid discharge pipe
600: elastic pad

Claims (4)

A housing having an upper cover and a lower cover, and a heat medium inlet port through which the heat medium flows into one side, a heat medium discharge pipe formed on the upper cover to discharge the heat medium from the inside of the housing, and a working fluid flowing through the edge of the housing vertically The working fluid inlet pipe, one end of which is in communication with the working fluid inlet pipe, and a vortex tube that is bent in a vortex shape inward, and the heat medium discharge pipe and housing pass through and communicate with the other end of the vortex tube to discharge the working fluid In a heat exchanger comprising a working fluid discharge pipe to perform heat exchange between the heat medium in the housing and the working fluid passing through the swirl tube,
A plurality of the swirl-shaped tubes are stacked in an up-down direction and each is joined to each other to form an integrated swirl-shaped tube body. under,
The working fluid inlet pipe is provided adjacent to the heat medium inlet,
The working fluid inlet pipe is provided so as to be close to or completely joined to the inner surface of the housing so that the heat medium introduced into the heat medium inlet is guided to go directly to the inside of the spiral tube body,
Elastic pads for sealing and vibration-proofing are further provided between the upper and upper covers or between the lower and lower covers of the spiral tube body, respectively,
The heat medium introduced into the housing is discharged through the heat medium discharge pipe after heat exchange occurs while flowing along a vortex path formed inside the vortex tube body,
Heat exchanger using a vortex tube, characterized in that the outer diameter of the working fluid discharge pipe is smaller than the inner diameter of the heat medium discharge pipe and disposed so as to overlap, thereby being discharged between the working fluid discharge pipe and the heat medium discharge pipe. delete delete delete

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