KR100832771B1 - Thermal storage container - Google Patents

Abstract

A heat storage container is provided to prevent drift of hot oil, which melts PCM stored in the heat storage container, by using auxiliary hot oil pipes which may be opened or closed, thereby inducing the PCM to be molten uniformly and increasing heat transfer between the hot oil and the PCM to reduce heat storage time. A heat storage container includes a hot oil inlet pipe(30) mounted in a PCM(Phase Change Material) which is filled in the container and formed with outlets(32), auxiliary hot oil pipes(50) mounted in the container and connected to the hot oil pipe by passing the PCM and an opening/closing element such as an inner pipe(33) formed with outlets(35) for opening or closing the outlets of the hot oil pipe and the auxiliary hot oil pipes alternately, wherein the inner pipe is connected to a driving element(34) to be driven by the driving element to reciprocate for opening or closing the outlets of the hot oil inlet pipe and the auxiliary hot oil pipe.

Description

Heat Storage Container {Thermal Storage Container}

The present invention relates to a heat storage container using a latent heat storage material.

More particularly, the present invention relates to a heat storage container which increases heat transfer efficiency between a latent heat storage material and a fruit oil by introducing an auxiliary heat exchanger oil pipe that can be opened and closed in the configuration of the fruit oil pipe installed to pass through the latent heat storage material.

In particular, the present invention relates to a heat storage container that can be suitably used for heat transport by reducing heat storage time by increasing heat transfer efficiency.

In order to store heat energy highly concentrated inside a heat storage container, the technique which uses a latent heat storage material (PCM) has been used conventionally.

The heat transfer between the heat storage container and the outside is carried out by heat transfer between the fruit oil and the latent heat storage material circulating the outside and inside of the heat storage container.

The heat storage process of the heat storage container is described in detail as follows.

The hot fruit oil heated from the external heat source is injected into the lower portion of the container to flow between the latent heat storage materials 20, thereby transferring the heat amount of the fruit oil to the latent heat storage materials 20.

Accordingly, the latent heat storage material 20 is dissolved in the liquid state from the solidified solid state. That is, as the latent heat storage material 20 changes from solid to liquid, heat is stored.

The heat dissipation process of the heat storage container is the reverse of the heat storage process.

That is, the latent heat storage material heats the fruit oil circulating with the coagulation heat released while solidifying from the liquid to a solid, and then discharges it to the outside of the heat storage container.

In the conventional heat storage container, as shown in FIG. 1, the fruit inflow pipe 30 having the outlet 32 is installed to be buried in the latent heat storage material 20 so that the fruit oil 10 may be discharged at a predetermined interval. The fruit oil discharge pipe 40 is installed above the latent heat storage material 20.

Therefore, the fruit oil introduced into the lower portion of the container through the fruit inflow pipe 3 is formed as a flow path to any portion of the latent heat storage material as shown in FIG. And efficient heat exchange between the latent heat storage material becomes difficult.

That is, as shown in FIG. 2, when a high temperature fruit oil flows into the latent heat storage material 20 in which heat is accumulated, a flow path is first formed (see b of FIG. 2), and heat transfer occurs in the thus formed flow path to cause drift. Fruit oil flows while only the passage is expanded (see c of FIG. 2).

Accordingly, the liquefaction of the latent heat storage material is made non-uniformly, the overall uniform heat transfer between the fruit oil and the latent heat storage material 20 is delayed, resulting in a decrease in heat exchange efficiency, resulting in a long heat storage and heat dissipation time.

If the time required for heat storage and heat dissipation is long, the overall efficiency of the heat delivery service using the heat storage container is also reduced.

In addition, when the drift occurs, the heat flux of the latent heat storage material 20 is increased, and thus the latent heat storage material 20 is mixed with the fruit oil and leaks to the outside of the heat storage container.

On the other hand, according to Korean Utility Model Publication No. 91-3000, a configuration has been proposed in which a rod-shaped heater is inserted into a heat storage tank, and a plurality of heat transfer fins are extended from the outer surface of the heater into the heat storage material at predetermined intervals. .

Such heat transfer fins have some effect in diffusing and transferring heat from the heater to the heat storage material in the heat storage tank, but are difficult to use for evenly dispersing the flow of fruit oil, and the heat transfer efficiency is not so high.

In order to solve the above problems, the fruit oil has a uniform cross-sectional area between the latent heat storage material (20) to achieve efficient heat exchange in the shortest possible time in the heat transfer process between the fruit oil and the latent heat storage material (20). It is an object of the present invention to provide a configuration for smoothly flowing.

Specifically, in the present invention, after installing a plurality of auxiliary fruit oil pipes 50 that can be opened and closed inside the heat storage container, the auxiliary fruit oil pipes installed between the latent heat storage material 20 by opening the auxiliary fruit oil pipe 50 at the initial stage of heat storage ( 50) by heating the high temperature fruit oil uniformly into the latent heat storage material 20 to form a plurality of heat medium flow path, and once the heat medium flow path is uniformly formed throughout the latent heat storage material 20, the auxiliary heat medium oil pipe ( High efficiency heat storage container capable of uniform dissolution of latent heat storage material 20 which can shorten heat storage and heat dissipation time by closing 50) and passing fruit oil directly into latent heat storage material 20 to heat transfer by direct contact. The purpose is to provide.

In order to achieve the above object, the present invention, by installing the fruit inlet pipe having the outlet 32 is formed in the latent heat storage material filled in the heat storage container, the auxiliary fruit oil pipe connected to communicate with the fruit inflow pipe latent heat storage It is installed so as to pass through the ash, and the opening and closing means for alternately opening and closing the outlet and the auxiliary fruit oil pipe formed in the fruit inflow pipe.

The present invention provides, as an example, an inner pipe having an inner pipe outlet 35 installed inside the fruit inflow pipe as the opening and closing means.

The present invention by installing the inner pipe outlet 35 in accordance with the interval between the outlet 32 is installed in the fruit inlet pipe or the interval between the auxiliary fruit oil pipe by reciprocating the inner pipe to the outlet formed in the fruit inlet pipe And auxiliary fruit oil pipe can be opened and closed alternately.

In the present invention, the inner pipe outlet 35 is formed at the same interval as the interval between the outlet 32 and the auxiliary fruit oil pipe is installed in the fruit inlet pipe, the outlet 32 is installed in the fruit inlet pipe And the internal pipe outlet 35 corresponding to each of the auxiliary fruit oil pipes may be shifted by a predetermined angle to rotate the internal pipes so that the outlet and auxiliary fruit oil pipes formed in the fruit inflow pipe may be alternately opened and closed.

On the other hand, the present invention as a means for improving the heat exchange efficiency between the fruit oil and the latent heat storage material, a plurality of outlets may be further formed in the auxiliary fruit oil pipe, or protruding fins on the outer surface of the auxiliary fruit oil pipe.

The heat storage container according to the present invention prevents the flow of the fruit oil dissolving the latent heat storage material stored in the heat storage container by drift by using the auxiliary heat exchanger pipe which can be opened and closed to induce the latent heat storage material to be dissolved uniformly. And the heat transfer efficiency between the heat storage material and the latent heat storage material, resulting in shortening the heat storage time.

In addition, in the present invention, since the fruit oil flows uniformly with a wide cross-sectional area between the latent heat accumulators, the flow rate of the fruit oil flowing inside the latent heat accumulators is not excessive. Problems can be prevented.

And the present invention by installing the pin 51 on the outer surface of the auxiliary fruit oil pipe to promote heat transfer between the fruit oil 10 and the latent heat storage material 20, it is possible to further shorten the heat storage time.

The configuration and method of the present invention will be described with reference to the embodiments shown in the accompanying drawings.

3 is a configuration diagram showing a heat storage container capable of uniformly dissolving the latent heat storage material 20 according to the present invention, and FIG. 4 is a process of dissolving the latent heat storage material 20 while the heat medium flows through the auxiliary heat medium oil pipe 50. 5 is a cross-sectional view schematically illustrating the opening and closing of the auxiliary fruit oil pipe 50, and FIG. 6 is a configuration diagram in which a fin 51 is installed in the auxiliary fruit oil pipe 50.

The configuration of the heat storage container according to the present invention will be described with reference to FIG.

The heat storage container is hermetically formed with an insulated shell, and this insulated shell is used with known techniques.

Inside the heat storage container is filled with a latent heat storage material 20 for storing and releasing heat while phase-changing into a solid phase and a liquid phase.

Under the heat storage container, the fruit inflow pipe 30 is drawn from the outside to be filled with the latent heat storage material which is filled in order to introduce the fruit oil.

The fruit oil flowing out from the fruit inflow pipe 30 is heat-exchanged with the latent heat storage material 20 and is collected in the heat storage container, and the fruit oil discharge pipe 40 is discharged from the heat storage container to discharge the fruit oil to the outside of the container. It is excreted in, and one end is drawn out.

At this time, the fruit inflow pipe 30 and the fruit oil discharge pipe 40 may be arranged in multiple stages or multiple rows according to the capacity of the heat storage container.

The above configuration is the same as that of the conventional heat storage container.

As a characteristic constitution of the present invention, in order to uniformly melt the latent heat storage material solidified at the initial stage of heat storage, the auxiliary fruit oil pipe 50 communicating with the fruit inflow pipe 30 is provided at predetermined intervals.

In addition, in the present invention, as shown in FIG. 5, the plurality of outlets 32 are formed in the fruit inflow pipe 30 at regular intervals, and a plurality of auxiliary fruit oil pipes 50 are connected to each other.

At this time, if necessary, a small outlet (not shown) may be formed in the body of the auxiliary fruit oil pipe 50.

Here, the present invention is provided with an opening and closing means to open and close the auxiliary fruit oil pipe 50 in communication with the outlet 32 formed in the fruit inlet pipe 30 alternately.

FIG. 5 shows an embodiment using the inner pipe 33 having the inner pipe outlet 35 formed inside the fruit inflow pipe 30 as the opening and closing means.

5 (a) and 5 (b) in the inner pipe 33 in accordance with the interval and position between the outlet 32 is installed in the fruit inlet pipe 30 and the auxiliary fruit oil pipe 50 in the inner pipe ( An embodiment in which 35 is formed is shown.

With this configuration, when the inner pipe 33 reciprocates in the inside of the fruit inflow pipe 30, the auxiliary fruit oil pipe 50 or the outlet 32 of the fruit inflow pipe 30 may be alternately opened and closed. Will be.

5 (c) and (d), an inner pipe outlet 35 formed in the inner pipe 33 is disposed between the outlet 32 and the auxiliary fruit oil pipe 50 installed in the fruit inflow pipe 30. Each embodiment is formed at the same interval as, but the position is shifted by a certain angle, for example about 90 degrees is shown.

By this configuration, when the inner pipe 33 rotates in the inside of the fruit inflow pipe 30, the auxiliary fruit oil pipe 50 or the outlet 32 of the fruit inflow pipe 30 may be alternately opened and closed. Will be.

In the present invention, but the configuration using the inner pipe 33, the inner pipe outlet 35 is formed to alternately open and close the outlet 32 of the auxiliary fruit oil pipe 50 and the fruit inlet pipe 30, the auxiliary The configuration of alternately opening and closing the fruit oil pipe 50 and the outlet 32 of the fruit oil inflow pipe 30 is not necessarily limited thereto, and may be performed at the level of those skilled in the art, such as a structure that opens and closes an electric signal using a solenoid valve or the like. Obviously, it can be implemented by various technical means.

Meanwhile, the reciprocating or rotating motion of the inner pipe 33 is driven by the inner pipe driving means 34 which is connected to one end of the inner pipe 33, and this connection configuration is known in the art.

For example, the reciprocating motion of the inner pipe 33 may be implemented by installing a pinion and a rack on the output shaft of the inner pipe driving means 34 or by installing a hydraulic actuator or the like and connecting the inner pipe 33.

The latent heat storage material 20 filled in the heat storage container is a material that remains in a solid state at a low temperature but changes to a liquid state at a predetermined temperature or more when heated by fruit oil, mainly erythritol, sodium acetate, magnesium chloride, and the like. Use

These latent heat storage materials 20 have a characteristic of storing heat in the form of heat of fusion as it turns from solid to liquid when heated, and releasing heat in the form of coagulation heat as the phase is changed from liquid to solid when cooled.

The following describes the working process of the present invention.

In order to accumulate heat in the heat storage container of the present invention, the fruit oil heated to a high temperature from an external heat source is introduced into the container through the fruit inflow pipe 30 installed at the bottom of the container.

At this time, as shown in (a) of FIG. 5, the inner pipe 33 installed inside the fruit inflow pipe 30 is reciprocated to coincide with the lower end of the auxiliary pipe oil pipe 50. Transfer to the position

Of course, in the case shown in Figure 5 (c) by rotating the inner pipe 33, the inner pipe outlet 35 is transferred to a position corresponding to the lower end of the auxiliary fruit oil pipe (50).

In this case, the auxiliary fruit oil pipe 50 is opened, and the outlet 32 of the fruit inflow pipe 30 is closed so that the fruit oil flows into the auxiliary fruit oil pipe 50.

Therefore, the high temperature fruit oil flows into the lower portion of the container through the fruit inflow pipe 30 and then moves to the upper portion of the container through the auxiliary fruit oil pipe 50 and around the auxiliary fruit oil pipe 50 and the fruit inflow pipe 30. Melting the latent heat storage material 20 to make a liquid state while forming a uniform flow path as many as the auxiliary fruit oil pipe 50 (see Fig. 4), and the fruit oil collected through the auxiliary fruit oil pipe 50 at the top of the container Is discharged to the outside through the fruit oil discharge pipe (40).

At this time, if a plurality of small outlets (not shown) are formed in the body of the auxiliary fruit oil pipe 50, the high temperature fruit oil leaks toward the latent heat storage material 20 while moving to the upper portion of the container through the auxiliary fruit oil pipe 50. Can be further promoted.

After a predetermined time, the outlet of the fruit inflow pipe 30 may be reciprocated by the inner pipe 33 as shown in (b) of FIG. 5 or rotated as shown in (d) of FIG. 32) and the auxiliary fruit oil pipe 50 is closed.

Therefore, the fruit oil introduced into the fruit inflow pipe 30 exits through the outlet 32 and performs heat exchange while directly contacting the latent heat storage body 20 along a flow path formed outside the auxiliary fruit oil pipe 50. Collected fruit is discharged to the outside through the discharge pipe (40).

On the other hand, in order to promote heat transfer between the fruit oil and the latent heat storage material 20 through the auxiliary fruit oil pipe 50, a fin (51) may be installed on the outer surface of the auxiliary fruit oil pipe (50).

In the above, certain preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention described in the claims.

1 is a configuration diagram schematically showing a conventional heat storage container.

Figure 2 is a schematic diagram of the fruit oil drift phenomenon in the latent heat storage material of the conventional heat storage container.

Figure 3 is a schematic view showing a heat storage container according to the present invention.

Figure 4 is a schematic diagram of the fruit oil flow path formed by the auxiliary fruit oil pipe.

5 is a schematic diagram of the fruit oil flow path change by the inner pipe

6 is a conceptual view of the auxiliary fruit oil pipe installed with a fin (Fin)

   <Description of the symbols for the main parts of the drawings>

    10: fruit oil 20: latent heat storage material

    30: fruit inflow pipe 32: outlet

    33: internal pipe 34: internal pipe driving means

    35: internal pipe outlet 40: fruit oil discharge pipe

    50: auxiliary fruit oil pipe 51: fin

Claims (6)

Install the fruit inflow pipe having the outlet 32 formed inside the latent heat storage material filled in the heat storage container, An auxiliary fruit oil pipe connected to communicate with the fruit inflow pipe is installed to pass through the latent heat storage material, Heat storage container, characterized in that the opening and closing means for opening and closing the outlet and the auxiliary fruit oil pipe formed in the fruit inflow pipe The method of claim 1, The opening and closing means is a heat storage container, characterized in that the inner pipe is formed with the inner pipe outlet 35 is installed in the fruit inlet pipe The method of claim 2, The inner pipe outlet (35) is a heat storage container, characterized in that it is installed in accordance with the interval between the outlet 32 is installed in the fruit inlet pipe or the gap between the auxiliary fruit oil pipe. The method of claim 2, The inner pipe outlet 35 is formed at the same interval as the interval between the outlet 32 and the auxiliary fruit oil pipe installed in the fruit inlet pipe, the outlet 32 and the auxiliary fruit oil pipe installed in the fruit inlet pipe The heat storage container, characterized in that the position of the inner pipe outlet 35 corresponding to each other are formed at a predetermined angle. The method of claim 1, The secondary heat storage oil pipe is characterized in that a plurality of outlets are formed The method of claim 1, A heat storage container, characterized in that the fin is formed on the outer surface of the auxiliary fruit oil pipe.

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