KR20220121047A - Heat exchanger with metal foam - Google Patents

Abstract

The present invention relates to a heat exchanger equipped with metal foam, and more particularly to the heat exchanger equipped with metal foam in which a heat exchange efficiency is improved by evenly distributing fluid flowing through a nozzle and allowing the fluid to flow into the heat exchanger. In the heat exchanger provided with a plurality of inlets of the present invention, the inlet includes: a nozzle; a manifold connected to the nozzle; and a metal foam in which a void is formed by being interpolated inside the manifold. When the fluid flows into the heat exchanger and exchanges heat, the fluid in a mixed state of liquid and gas is prevented from being biased to one side so that the heat exchange efficiency is increased.

Description

Heat exchanger with metal foam

The present invention relates to a heat exchanger provided with a metal foam, and more particularly, to a heat exchanger provided with a metal foam in which heat exchange efficiency is improved by allowing a fluid flowing in through a nozzle to be evenly distributed and introduced into the heat exchanger.

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.

The heat exchanger is conventionally used to maintain the temperature of air conditioning, etc., but recently, the heat exchanger is used to control the vaporization and liquefaction process of the fluid to increase transport convenience and convert it into a phase suitable for use as fuel for the engine. It is widely used.

According to the arrangement of the heat exchanger, heat exchange efficiency becomes a factor that determines the performance of the engine, and development for improving the efficiency of the heat exchanger is being actively performed.

As described above, the vaporization and liquefaction processes of the fluid flowing into the heat exchanger can be controlled. As in LNG, which is generally used, it is often a liquid only in a very low temperature state, so it is vaporized by the inflow of minute heat, or sloshing. Since it is often vaporized by a liquid, it is actually introduced into the heat exchanger in a mixed state of liquid and gas.

When liquid and gas are introduced into the heat exchanger in a mixed state, a bias phenomenon occurs in which the supply of fluid is non-uniform inside the heat exchanger. , there is a problem in that the bias of the supplied fluid eventually causes a decrease in the efficiency of the heat exchanger.

US 10-1903663 B1 US 10-2073625 B1

The present invention was invented to solve the above problems, and when a fluid flows into a heat exchanger and heat exchange, a metal foam that increases heat exchange efficiency by preventing a fluid in a mixed state of liquid and gas from flowing into one side is provided An object of the present invention is to provide a heat exchanger.

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.

In the heat exchanger provided with a metal foam according to the present invention for achieving the above object is provided with a plurality of inlets, the inlet, the nozzle; a manifold connected to the nozzle; and a metal foam interpolated into the manifold to have voids formed therein.

In addition, the manifold, one side has an arcuate corner, the nozzle is coupled to the center, the other side is a hollow outer plate part; It is characterized in that it consists of a lattice-type cover part detachably coupled to the other open side of the outer plate part.

In addition, the metal foam is technically characterized in that the density of the pores is differentially formed.

In addition, the metal foam is technically characterized in that it is formed separately according to the density of the pores.

In addition, it is technically characterized in that a catch is provided inside the manifold to prevent deformation of the metal foam.

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

Since the fluid can be evenly distributed regardless of the phase of the fluid supplied to the heat exchanger, heat exchange efficiency can be improved.

The improvement of the heat exchange efficiency enables a stable fuel supply, which ultimately can stably maintain the output of the engine, thereby improving the efficiency of the entire equipment.

The density of the metal foam that can be inserted into the manifold can be precisely controlled by making it detachable, and the flexibility of this installation can be easily applied regardless of the type of fluid that can be changed when the heat exchanger is installed.

Due to the flexibility of the shape of the metal foam, it can be arranged so that an unbalanced or missing space is not formed even in various shapes of the manifold, so that its installation and exchange can be made very easily.

In particular, this ease of installation and exchange, considering that the fluid supplied by the heat exchanger is used as a fuel to determine whether the operation efficiency of the entire equipment is determined, it is possible to obtain an economic effect of rapid processing of work.

1 is a block diagram of a general heat exchanger.
2 is a block diagram showing the components of a general heat exchanger.
3 is an overall configuration diagram of a heat exchanger provided with a metal foam according to a preferred embodiment of the present invention.
4 is a side view showing the regulation according to a preferred embodiment of the present invention.
5 is a front view showing a configuration according to a preferred embodiment of the present invention.
6 is a perspective view showing a configuration according to a preferred embodiment of the present invention.
7 is a side view showing a configuration provided with metal foam having different densities according to another embodiment of the present invention.
8 is a block diagram showing a spinneret according to a preferred embodiment of the present invention.
9 is a side view showing a spinnerette according to a preferred embodiment of the present invention.

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

1 is a configuration diagram of a general heat exchanger, FIG. 2 is a configuration diagram showing the components of a general heat exchanger, FIG. 3 is an overall configuration diagram of a heat exchanger provided with metal foam according to a preferred embodiment of the present invention, FIG. 4 is a side view showing the regulation according to a preferred embodiment of the present invention, Figure 5 is a front view showing a configuration according to a preferred embodiment of the present invention, Figure 6 is a perspective view showing a configuration according to a preferred embodiment of the present invention, 7 is a side view showing a configuration provided with metal foam having different densities according to another embodiment of the present invention, FIG. 8 is a configuration diagram showing a spinnerette according to a preferred embodiment of the present invention, and FIG. 9 is the present invention It is a side view showing a spinneret according to a preferred embodiment of the.

A heat exchanger provided with a metal foam according to a preferred embodiment of the present invention includes a nozzle 100 , a manifold 200 and a metal foam 300 as shown in FIG. 3 .

First, look at the nozzle 100 .

The nozzle 100 may collectively refer to a passage through which a fluid flows into the inside of the heat exchanger 10 from the outside.

The nozzle 100 may be generally formed in the form of a circular tube having a constant diameter. One end may be connected to a tank to which a fluid is supplied, and the other end may be connected to a manifold 200 to be described later.

In order to maintain the phase of the fluid passing through the nozzle 100, it may be preferable that the nozzle 100 is made of a material having thermal insulation performance so that heat exchange with the outside does not occur.

The shape of the nozzle 100 may be of a general shape, but a dome-type spinneret 400 is further provided so that the nozzle 100 can radiate the fluid at a portion where it is connected to the manifold 200 . can be

In detail, the spinneret 400 is formed at the end of the manifold 200 side of the nozzle 100 and may be coupled by a fixing part 410 formed with a pin or a bolt. In this embodiment, although the spinneret 400 is shown as an example coupled with a bolt, it is not limited to this form, and may be fixed by welding or the like.

The spinneret 400 includes a jet part 430 formed of a dome having a plurality of jetting holes 431 formed so as to cause a radial jetting of the fluid, and the nozzle 100 is coupled to the jetting part 430. The inner diameter of the nozzle 100 It may be formed of an insertion part 450 having a through hole 451 inserted therein and through which the above-described fixing part 410 is coupled therethrough.

At the end of the nozzle 100, a seating part 110 is formed in which the aforementioned insertion part 450 can be inserted and seated, and the fixing part 410 penetrating the insertion part 450 is formed in the seating part 110. A fixing hole 111 to be fixedly coupled may be provided.

Looking at the fixed state based on such a structure, the seating portion 110 having a relatively expanded shape than the entire inner diameter of the nozzle 100 may be formed at the end of the nozzle 100 .

The insertion part 450 of the spinneret 400 is fitted and inserted into the seating part 110 and fixed, and the fixing hole 111 formed in the seating part 110 and the through hole formed in the insertion part 450 are fixed. 451 may be aligned.

A fixing part 410 in the form of a pin or bolt is installed through the aligned coupling hole in the axial direction of the nozzle 100 , and the end of the fixing part 410 may be coupled to the fixing hole 111 to be fixed.

Due to this structure, the spinneret 400 may be fixedly formed at the end of the nozzle 100 , and the fluid inside the nozzle 100 is ejected from the nozzle 100 to the ejection part 430 of the spinneret 400 . It may be ejected radially through the hole 431 .

The radial ejection of the fluid through the spinneret 400 can minimize the bias of the fluid flowing into the manifold 200 from the nozzle 100 without the spinnerette 400 .

On the other hand, the shape of the spinneret 400 according to the present embodiment is not limited to the shape shown in the drawings. That is, the spinneret 400 serves to distribute the fluid coming out through the narrow nozzle to the manifold 200 of the wide form in an even direction first before the fluid is evenly distributed in the metal foam 300 . Therefore, it can be manufactured in various shapes having voids. For example, it is widely formed in a plate shape, and may be manufactured in the form of a distribution plate.

Next, look at the manifold 200 .

The manifold 200 may serve to distribute the fluid flowing in from the nozzle 100 to the inlets of the plurality of heat exchangers 10 to be introduced.

The manifold 200 may be formed over the entire area in which the inlet of the heat exchanger 10 is formed. Specifically, one side has an arcuate edge to which the nozzle 100 is coupled, a closed outer plate, and the other side has an open shape. It is made of a shape coupled to form a closed space with the region where the inlet of the heat exchanger 10 is formed, and an outer plate 210 having a hollow shape may be formed inside.

The shape of the outer plate part 210 may prevent abrupt changes in the fluid path as much as possible by configuring the corners in an arcuate shape rather than a rectangular parallelepiped so that the path of the fluid flowing therein is not abruptly deformed.

A grid-shaped cover part 230 may be formed on the open side of the outer plate part 210 , and the cover part 230 may be configured to be detachably attached to the outer plate part 210 .

The cover part 230 serves to prevent the metal foam 300, which will be described later, from being separated from the internal space formed in the outer plate part 210 of the manifold 200. This can be done by, preferably, the vertical frame 231 and the horizontal frame 233.

As described above, the cover part 230 plays a major role in preventing the metal foam 300 from being separated, and the fluid passing through the metal foam 300 flows from the manifold 200 to the inlet of the heat exchanger 10 . It may be preferable to be formed of a frame having a minimum thickness that can maintain strength so as not to interfere with being.

A plurality of locks 211 formed in a hollow inner direction may be provided inside the outer plate portion 210 of the manifold 200 .

The metal foam 300 to be described later may have an elastic force by itself, and may generally maintain its shape.

The latch 211, one side is attached to the outer plate portion 210 having a fixed strength, and the other side has a metal form 300 to have a ring shape so that a part of the metal foam 300 can be caught in the shape of the metal foam 300. You can play a role in keeping it as long as possible.

A plurality of catches 211 may be formed on the inner surface of the outer plate portion 210 , and the radius of the ring is formed to be smaller than the air gap of the metal foam 300 , so that the ring of the stopper 211 is the air gap of the metal foam 300 . It may be preferable that the metal foam 300 is fixed by being inserted and caught between them.

Next, look at the metal foam 300 .

The metal foam 300 may refer to a metal foam, which means that it is made of a metal material and is formed so that irregular voids are formed therein.

It may be preferable to form the metal foam 300 to have corrosion resistance and durability while no reaction occurs when in contact with the flowing fluid.

Formation of the metal foam 300, by configuring the metal in the same shape as a thin wire and entangling it irregularly, it can form voids and have an overall adequate elastic force due to structural compensation by the voids, and by this property, Even when the shape of the fold 200 is complicated and variously formed, it is possible to facilitate the installation of the metal foam 300 .

The metal foam 300 is inserted into the manifold 200 as described above, is inserted into the inner space of the outer plate part 210 and can be prevented from being separated by the cover part 230 , and additionally the outer plate part 210 inside By being caught on the stopper 211 formed in the fixed, it may be possible to prevent separation and maintain the shape.

By attaching and detaching the cover part 230, the metal foam 300 can be easily installed and separated from the manifold 200,

The density of the pores of the metal foam 300 can be configured in various ways, and the provision of these various pores can be applied depending on the type of fluid flowing through the nozzle 100 and its properties, that is, properties such as phase or viscosity. can make it easy.

Additionally, the metal foam 300 inserted into one manifold 200 may be configured to have different densities.

As described above, the fluid flowing into the manifold 200 may be provided in a state in which its phase is mixed with liquid or gas, and the metal foam 300 having different voids may be disposed according to the shape of the phase.

Specifically, in the case of the fluid flowing from the manifold 200, the gaseous part flows into the upper part of the manifold 200, and the liquid part is more likely to flow into the lower part of the manifold 200, so that Accordingly, the metal foam 300 installed in the manifold 200 may be disposed so that the voids of the upper and lower portions are different.

The upper part is composed of the metal foam 300 having very dense pores because gas flows in, and the lower part is composed of the metal foam 300 having relatively less dense pores because the liquid flows in, and the upper and lower parts are can be formed separately.

The separately formed metal foam 300 can be individually replaced according to the degree of wear or corrosion, so that the service life of the corresponding equipment can be increased and the user's convenience can be maximized.

Finally, a movement path of the fluid flowing into the heat exchanger 10 with the above components is looked at.

The heat exchanger 10, for example, a plate-fin type heat exchanger (PFHE) or a printed circuit board type heat exchanger 10 (PCHE) may be provided with a plurality of inlets.

A manifold 200 is formed at the plurality of inlets, and the nozzle 100 may be connected to the outer plate 210 of the manifold 200 .

The fluid flows into the nozzle 100 from the tank formed outside, and as described above, the fluid may be in a state in which a liquid and a gas are mixed by external heat transfer and sloshing.

The flowing fluid passes through the spinneret 400 formed in the end of the nozzle 100, and the fluid is distributed as much as possible to the manifold 200 through the ejection hole 431 formed in the dome-shaped spinneret 400 and is radiated. can be imported.

The fluid flowing into the manifold 200 prevents the fluid from being biased on one side by the metal foam 300 , and the liquid is mainly located in the lower part of the manifold 200 by its own weight and the gas is located in the upper part of the manifold 200 . It can be mainly located in

The metal foam 300 is formed with different densities of the upper and lower portions, so that the gas is distributed through the very dense pores, and the liquid can be distributed as evenly as possible through the relatively less dense pores.

The fluid distributed as evenly as possible may be introduced into the heat exchanger 10 through the open side of the manifold 200 formed over the region where the inlet of the heat exchanger 10 is formed.

The metal foam 300 is located in the inner space of the outer plate part 210 , the separation can be prevented by the cover part 230 , and the separation is prevented by the latch 211 formed inside the outer plate part 210 . And in spite of the pressurization of the flowing fluid, its shape may be maintained.

The user can selectively replace all or part of the metal foam 300 by removing the grid-type cover 230 after disassembling the manifold 200 when corrosion or wear of some metal foam 300 occurs. It is possible, and even when the shape of the manifold 200 is very complicated and various, it can be easily installed without missing a space due to the elastic force of the metal foam 300 itself.

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.

10: heat exchanger
100: nozzle
110: seating part
111: fixing hole
200: manifold
210: outer plate
211: catch
230: cover part
231: vertical frame
233: horizontal frame
300: metal foam
400: spinneret
410: fixed part
430: ejection part
431: ejection hole
450: insert
451: through hole

Claims (5)

In the heat exchanger provided with a plurality of inlets,
The inlet is
Nozzle;
a manifold connected to the nozzle; and
A heat exchanger provided with a metal foam comprising; a metal foam interpolated into the manifold to form an air gap. According to claim 1,
The manifold is
One side has an arcuate corner, the nozzle is coupled to the center, the other side is an open hollow outer plate portion;
A heat exchanger provided with metal foam, characterized in that it comprises; a grid-type cover part detachably coupled to the other open side of the outer plate part. 3. The method of any one of claims 1 or 2,
The metal foam is a heat exchanger provided with a metal foam, characterized in that the void density is differentially formed. 4. The method of claim 3,
The metal foam is a heat exchanger provided with a metal foam, characterized in that formed separately according to the density of the pores. According to claim 1,
A heat exchanger with metal foam, characterized in that a catch is provided inside the manifold to prevent deformation of the metal foam.

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