KR102308613B1 - Printed circuit heat exchanger for easy prevention and removal of icing - Google Patents

Abstract

The present invention relates to a printed circuit board-type heat exchanger for easily preventing and removing icing and, more specifically, to a printed circuit board-type heat exchanger for easily preventing and removing icing, capable of preventing icing on stacked boards by overlapping flow paths of glycol water used for a heat exchange; and supplying additional glycol water through a plurality of ports formed to easily remove formed icing. According to the present invention, in regard to the printed circuit board-type heat exchanger comprising a case, a main port for introducing and discharging fluids to be heated, a sub port for introducing and discharging fluids for heating, and a board-stacked channel embedded in the case while having a flow path formed therein, the sub port comprises: an introduction sub port formed on one side of the case, while divided into first and second introduction sub ports; and a discharge sub port formed on the other side of the case, while opposed to the first introduction sub port.

Description

Printed circuit heat exchanger for easy prevention and removal of icing

The present invention relates to a printed circuit board type heat exchanger that is easy to prevent and remove icing, and more particularly, to prevent icing of stacked substrates by overlapping flow paths of a heating fluid used for heat exchange, and to easily prevent icing It relates to a printed circuit board type heat exchanger that is easy to prevent and remove icing so that an additional heating fluid is supplied through a plurality of ports formed so as to be easily removed.

The heat exchanger is used to cause a phase change by cooling or heating the temperature of a specific fluid, and generally uses a method in which heat exchange is performed by arranging a plurality of fluids having different temperatures to overlap each other.

Recently, while using LNG as a fuel for a ship, the use of a heat exchange device has become more important to vaporize liquefied LNG, and the stable operation and efficiency improvement thereof are required. Printed circuit heat exchanger (PCHE) that increases the heat transfer area by forming a flow path through which the heating fluid passes and the other plate forms a flow path through which the heating fluid passes. has been developed

Due to the development of the printed circuit board type heat exchanger, the size and weight of the heat exchanger can be reduced, thereby increasing space utilization, ease of operation, and improvement of heat exchange efficiency.

However, the flow path of such a printed circuit board type heat exchanger is formed of a micro flow path, so clogging occurs. Specifically, when icing occurs due to the cooling heat transferred from the heating fluid to the heating fluid. was often

In particular, when the continuous supply of the heating fluid to the heat exchanger is not made, for example, when the operation of the heat exchanger is stopped, the possibility of icing is increased, and when the heat exchanger is restarted, the There was a problem in that the operating efficiency of the

In addition, the blockage of the flow path due to the icing may cause equipment failure due to adhesion of the icing as well as deterioration of the performance of the heat exchanger, which eventually causes the entire system to stop.

US 10-1903663 B1 US 10-2073625 B1

The present invention was invented to solve the above problems, and the generation of icing on the stacked printed circuit boards is prevented through the recovery of the heating fluid in the printed circuit board type heat exchanger, and the icing generated through the additional heating fluid supply line An object of the present invention is to provide a printed circuit board type heat exchanger that is easy to prevent and remove icing, which can be easily removed to improve heat exchanger efficiency and ensure stable operation.

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood from the description below.

A printed circuit board type heat exchanger that is easy to prevent and remove icing according to the present invention for achieving the above object includes a case, a main port through which a heating fluid enters and exits, a sub port through which a heating fluid enters and exits, and a flow path is formed inside the case. A printed circuit board type heat exchanger having a board stacked channel, the subport comprising: an inlet subport formed on one side of the case and divided into a first inlet subport and a second inlet subport; and an exhaust subport formed on the other side of the case to face the first inlet subport.

In addition, the channel may include: a main plate communicating with the main port and having a main flow path through which a fluid to be heated passes; a first plate overlapping the upper and lower portions of the main plate, the inlet side communicating with the first inlet subport and the outlet communicating with the second inlet subporting, the first plate having a first flow path through which the heating fluid passes; and a second plate disposed overlapping on the outside of the first plate, the inlet side communicating with the second inlet subport and the outlet side of the second plate having a second flow path communicating with the outlet subport.

In addition, the first flow passage is technically characterized in that it is formed in a zigzag shape.

In addition, the second flow passage is technically characterized in that it is formed in a straight line.

In addition, it is technically characterized in that the second inlet subport is further provided with an openable and openable valve.

In addition, the upper and lower portions of the case, the second inlet sub-port and the discharge sub-port and a jacket communicating with the further provided is characterized in that the technical feature.

The present invention according to the above configuration can expect the following effects.

When the heat exchanger is operated, the heating fluid is primarily cooled by receiving cooling heat from the fluid to be heated, but the occurrence of icing can be prevented by being heated by the recovered heating fluid.

As described above, the generation of icing that clogs or narrows the microchannel is prevented, so that the heat exchanger performance is improved and stable operation is possible.

In the case of ships where heat exchangers are mainly used, maintaining the maximum equipment operation rate is the most important factor. .

A plurality of ports through which the heating fluid flows are provided so that the ports on one side can be opened and closed, so that, when icing has already occurred, the heating fluid can be quickly supplied to remove the icing as quickly as possible.

In general, equipment is not continuously operated, but discontinuously starts and stops repeatedly. Considering that the largest load occurs when the equipment is switched from a stopped state to an operational state, when the heat exchanger is restarted, the Delay can be a big problem.

The additionally formed heating fluid inlet port is configured to be able to be opened and closed by a valve, so that icing generated by the rapid addition of the heating fluid during restart can be eliminated, thereby eliminating the restart delay.

In particular, the delay generated during restart causes an instantaneous increase in the load on the peripheral device, and the icing, which is the cause, is quickly removed, thereby significantly reducing the possibility of a malfunction of the peripheral device. can

In addition, by providing jackets for increasing heat capacity at the upper and lower portions of the case to sufficiently accommodate the cooling heat of the fluid to be heated, prevention and removal of icing can be made more quickly and easily.

1 is a perspective view of a printed circuit board type heat exchanger that is easy to prevent and remove icing according to a preferred embodiment of the present invention.
2 is an overall configuration diagram of a case according to a preferred embodiment of the present invention.
3 is a block diagram showing a jacket according to a preferred embodiment of the present invention.
4 is an internal configuration diagram of a channel according to a preferred embodiment of the present invention.
5 is a block diagram showing a stacked structure of channels according to a preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a printed circuit board type heat exchanger capable of preventing and removing icing according to a preferred embodiment of the present invention will be described in detail.

1 is a perspective view of a printed circuit board type heat exchanger that is easy to prevent and remove icing according to a preferred embodiment of the present invention, FIG. 2 is an overall configuration diagram of a case according to a preferred embodiment of the present invention, and FIG. A configuration diagram showing a jacket according to a preferred embodiment of the present invention, FIG. 4 is an internal configuration diagram of a channel according to a preferred embodiment of the present invention, and FIG. 5 is a stacked structure of channels according to a preferred embodiment of the present invention. It is a configuration diagram.

A printed circuit board type heat exchanger that is easy to prevent and remove icing according to a preferred embodiment of the present invention includes a case 100 , a main port 200 , a sub port 300 and a channel 400 as shown in FIG. 1 . can be configured.

First, look at the case 100 .

The case 100 generally refers to a configuration that provides an appearance in which other components can be embedded. In the present invention, the fluid to be heated and the heating fluid are supplied while providing a space in which the channel 400 to be described later is embedded. The main port 200 and the sub-port 300 may be collectively referred to as serving to be attached to one side.

The case 100 may be configured in various shapes, but considering the ease of processing of the channel 400 in that the channel 400 is embedded as described above, it may be preferable to be configured in a rectangular parallelepiped shape. In this section, a rectangular parallelepiped shape is assumed and explained.

A jacket 600 having a zigzag flow path formed therein may be provided at the upper and lower portions of the case 100 , which will be described later.

Next, the main port 200 and the sub port 300 will be looked at.

The port refers to a place where the fluid is introduced and discharged, and may be divided into a main port 200 to which a heating fluid is supplied and a subport 300 to which a heating fluid is supplied.

The main port 200 and the sub-port 300 may be attached to one side of the case 100 , and preferably, the main port 200 and the sub-port 300 are perpendicular to the surface of the case 100 . can be attached to

In detail, when the main port 200 is attached to the opposite two surfaces of the four side surfaces of the case 100 , the sub-port 300 is attached to the remaining two surfaces perpendicular thereto, resulting in the main port 200 and the sub-port. 300 may be formed to be vertical.

The main port 200 is a place where the fluid to be heated is supplied, and may be directly connected to the main plate 410 of the channel 400 to be described later, and the inflow side and the discharge side may be configured in the same shape.

Since the main port 200 is generally formed in the form of a pipe, a main header 210 may be provided between the main port 200 and the case 100 so that the fluid to be heated can be uniformly distributed and entered and exited.

The sub-port 300 is a place where the heating fluid is supplied. As described above, the sub-port 300 is disposed perpendicular to the main port 200 and attached to the case 100, and a first plate 430 and a second plate 450 to be described later. ) can be directly connected to

Unlike the main port 200, the sub-port 300 has a plurality of inflow side first inflow sub-port 310 and second inflow sub-port 330, and a single discharge sub-port 350 on the discharged side. ) and may have different shapes.

Due to the morphological characteristics, the first inlet subport 310 and the second inlet subport 330 are both formed on one side of the case 100 , and the discharge subport 350 is the other side of the case 100 . Doedoe formed in the first inlet sub-port 310 and may be disposed to face.

The first inlet subport 310 is directly connected to a first plate 430 to be described later, but is limitedly connected to the inlet side of the first plate 430 , and the second inlet subport 330 is connected to the first plate 430 . ) may be connected to both the outlet side and the inlet side of the second plate 450 , and the discharge subport 350 may be connected to the outlet side of the second plate 450 .

A header may also be provided between the sub-port 300 and the case 100, and the first inlet sub-header 311 and the second inlet sub-header 331 are formed independently so as not to communicate with each other, and the outlet sub-header ( 351 may be formed to face the same shape as that of the first inflow sub-header 311 .

Next, look at the channel 400 .

The channel 400 is made of a stacked printed circuit board, and may refer to a movement path of the fluid flowing in and out of the main port 200 and the sub-port 300 described above.

Due to the shape of the stacked printed circuit board, heat exchange between the fluid to be heated and the fluid moving through the flow path formed in the channel 400 may be performed.

The channel 400 may be divided into a main plate 410 , a first plate 430 , and a second plate 450 to be stacked.

The main plate 410 communicates with the main port 200 and is formed so that the fluid to be heated passes, and a main flow path 411 for guiding the movement of the fluid to be heated may be formed on the surface of the main plate 410 .

In detail, the main flow path 411 is formed in the form of a micro flow path on the surface of the main plate 410 , and may be generally formed by an etching method, and a first flow path 431 and a second flow path 431 to be described later. The flow path 451 may be formed in the same way.

The main flow path 411 may be formed in the same direction as the main port 200 , and may be configured in a straight line from the main port 200 on the inlet side to the main port 200 on the outlet side.

The first plate 430 is formed to allow the heating fluid to pass therethrough, and is overlapped on the upper and lower sides of the main plate 410 , so that the first plate 430 may serve to perform an initial heat exchange between the heating fluid and the heating fluid.

A first flow path 431 may be formed on the surface of the first plate 430 . The inlet side of the first flow path 431 communicates with the first inlet sub port 310 , and the outlet side communicates with the second inlet sub port 310 . It may communicate with the port 330 .

Considering the structure in which the first inlet subport 310 and the second inlet subport 330 are formed on the same side of the case 100, the inlet side and the outlet side of the first flow path 431 may also be formed on the same side. , specifically, the first flow path 431 may be formed in a zigzag shape.

Such a zigzag structure of the first flow path 431 may serve to improve heat exchange efficiency by maximizing the heat transfer area with the main flow path 411 described above, and the first plate 430 may be disposed on the upper and lower sides of the main plate 410 . Since the heating target fluid passing through the main flow path 411 can be effectively heat-exchanged with the first flow path 431 located at the upper and lower sides.

A second plate 450 may be overlapped on the outside of the first plate 430 .

The second plate 450 may have a second flow path 451 formed on its surface. The second flow path 451 has an inlet side in communication with the second inlet subport 330 and an outlet side with the outlet subport 350 and can be communicated.

As described above, since the outlet side of the first flow path 431 and the inlet side of the second flow path 451 are both formed to communicate with the second inlet subport 330 , as a result, the discharge from the first flow path 431 . The heated fluid may be in a form that is recovered to the inlet of the second flow path 451 .

Since the outlet side of the second flow path 451 communicates with the discharge subport 350, the inlet and the outlet of the second flow path 451 may be formed on opposite sides, and in detail, the second flow path 451 is A plurality of micro-channels may be formed to be perpendicular to the direction in which the heating fluid flows into the inlet and outlet.

Unlike the first flow passage 431 that makes heat exchange in contact with the fluid to be heated, the second flow passage 451 only comes in contact with the first flow passage 431 to transfer heat to prevent icing from occurring. can

Looking at the structure in which the main plate 410, the first plate 430, and the second plate 450 are overlapped based on the above-described structure, the main plate 410 is the center, and the main plate 410 is The first plate 430 is disposed vertically, and the second plate 450 is disposed outside the first plate 430 .

Accordingly, assuming that the structure is one set as shown in FIG. 5 , each set may be disposed to share the second plate 450 .

Additionally, an openable valve 500 may be further provided in the second inlet subport 330 , and the valve 500 may be automatically controlled or manually controlled.

According to the opening and closing of the valve 500, the inflow of the heating fluid through the second inlet sub port 330 can be controlled, which is a second inlet to remove icing that may occur when the heat exchanger is stopped. This is to quickly supply the heating fluid through the sub-port 330 .

In detail, when the valve 500 is closed, the heating fluid moves through the first flow path 431 of the first plate 430 and then is recovered through the second sub port 300 and returned to the second plate ( 450), but it is difficult to quickly remove the icing through this recovery path.

When the valve 500 is opened, the heating fluid flows into the first plate 430 through the first sub-port 300 , and additionally through the second sub-port 300 to the second plate 450 through the recovery path Since it is supplied through a direct route, the removal of icing can be done very quickly.

Additionally, the upper and lower portions of the case 100 are further provided with a jacket 600 having a closed box shape, and may be formed to communicate with the second inlet subport 330 and the outlet subport 350 .

As described above, the discharge subport 350 may be disposed on the same line as the first inlet subport 310, and the first inlet subport 310 and the second inlet subport 330 are spaced apart, The passage through which the jacket 600 communicates with the second inlet sub-port 330 and the outlet sub-port 350 may be disposed in a form to be spaced apart from the same line.

Due to this shape, the partition wall 610 may be formed inside the jacket 600 to form a zigzag movement path so that the heating fluid inside the jacket 600 can easily move.

The jacket 600 may serve to sufficiently maintain a retention amount of the heating fluid to increase the total heat capacity of the heating fluid so that all of the cooling heat transferred from the fluid to be heated can be accommodated.

Looking at the above structure as a whole, all sides of the case 100 may be provided with components, the jacket 600 is provided on the upper and lower surfaces, the subport 300 is provided on two side surfaces, and the other side 2 A main port 200 may be provided on the surface.

A heat exchange method of a heat exchanger based on the above-described components will be described.

The fluid to be heated flows in through the main port 200 provided on the two side surfaces of the case 100 and is discharged through the main flow path 411 formed in a straight line to the main port 200, the main header 210 ) can be uniformly introduced and discharged.

The sub-port 300 is formed in a direction perpendicular to the main port 200, and the valve 500 is divided into a closed case and an open case.

When the valve 500 is closed, the heating fluid introduced through the first inlet subport 310 flows into the first plate 430 and moves along the first flow path 431 formed in a zigzag shape, while the main It exchanges heat with the fluid to be heated passing through the flow path (411).

The heating fluid passing through the first flow path 431 is introduced into the second plate 450 formed outside the first plate 430 through the second inlet subport 330, and is formed perpendicular to the inflow direction. After moving along the second flow path 451 and supplying additional heat to the first plate 430 , icing that may be generated in the first flow path 431 is prevented, it is discharged through the discharge subport 350 .

When the valve 500 is opened, the heating fluid is introduced at once through the first inlet subport 310 and the second inlet subport 330, and the heating fluid flowing into the second plate 450 is Unlike the case in which the valve 500 is closed, heat exchange with the fluid to be heated is not performed to maintain a relatively high temperature, so that the icing formed in the channel 400 can be quickly removed.

In addition, in the normal operating state of the heat exchanger, icing can be prevented with the valve 500 closed, but when icing occurs in the channel 400 due to sudden shutdown or stoppage, the valve 500 ) is temporarily opened to remove the icing, and then the valve 500 is closed again to maintain the normal operating state of the heat exchanger.

The above-described embodiments are merely exemplary, and those of ordinary skill in the art can variously modified other embodiments therefrom.

Therefore, the true technical protection scope of the present invention should include not only the above embodiments but also other embodiments variously modified by the technical spirit of the invention described in the following claims.

100: case
200: main port
210: main header
300: subport
310: first inflow subport
311: first inflow sub-header
330: second inflow subport
331: second inflow subheader
350: exhaust subport
351: emission subheader
400: channel
410: main plate
411: Main Euro
430: first plate
431: 1st Euro
450: second plate
451: 2nd Euro
500: valve
600: jacket
610: bulkhead

Claims (6)

delete In the printed circuit board type heat exchanger comprising a case, a main port through which the heating fluid enters and exits, a sub port through which the heating fluid enters and exits, and a substrate stacked channel built in the case and having a flow path,
The subport is
an inlet subport formed on one side of the case and divided into a first inlet subport and a second inlet subport; and
Doedoe formed on the other side of the case, consisting of a discharge sub-port formed to face the first inlet sub-port,
The channel is
a main plate communicating with the main port and having a main flow path through which a fluid to be heated passes;
a first plate overlapping the upper and lower portions of the main plate, the inlet side communicating with the first inlet subport and the outlet communicating with the second inlet subporting, the first plate having a first flow path through which the heating fluid passes; and
Doedoe overlapping on the outside of the first plate, the inlet side communicating with the second inlet subport and the outlet side of the icing prevention and removal, characterized in that consisting of a second plate is formed in communication with the outlet subport Easy printed circuit board heat exchanger. 3. The method of claim 2,
The first flow path is a printed circuit board type heat exchanger that is easy to prevent and remove icing, characterized in that it is formed in a zigzag shape. 4. The method according to any one of claims 2 to 3,
The second flow path is a printed circuit board type heat exchanger that is easy to prevent and remove icing, characterized in that it is formed in a straight line. 3. The method of claim 2,
The second inlet subport is a printed circuit board type heat exchanger that is easy to prevent and remove icing, characterized in that the openable valve is further provided. In the printed circuit board type heat exchanger comprising a case, a main port through which the heating fluid enters and exits, a sub port through which the heating fluid enters and exits, and a substrate stacked channel built in the case and having a flow path,
The subport is
an inlet subport formed on one side of the case and divided into a first inlet subport and a second inlet subport; and
Doedoe formed on the other side of the case, consisting of a discharge sub-port formed to face the first inlet sub-port,
A printed circuit board type heat exchanger that is easy to prevent and remove icing, characterized in that the upper and lower portions of the case further include a jacket communicating with the second inlet subport and the outlet subport.

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