KR100860208B1 - Ice container - Google Patents

Abstract

An ice container is provided to remove a spot that has not been heat exchanged and buoyancy and to improve heat exchange efficiency by not making a damping air layer in a filing unit. An ice container comprises a container body(11a), and an expansion unit(20a) wherein a neck unit(22a), an extension unit(23a), and a lower bent unit(24) are integrally formed. The container body has a hollow filling unit(30) where a freezing solution is filled up. The expansion unit is piled in the filling unit of the ice container. The neck unit has an opening where refrigerant is injected. The extension unit is formed at a lower part of the neck unit, bears the expansion pressure when the freezing solution is frozen and is recovered by elasticity when the freezing solution is melted. The extension unit has extension space connected to the opening of the neck unit. The lower bent unit is formed at the lower part of the extension unit to reduce tension.

Description

Ice container

1 is a schematic partial sectional sectional view and a plan view of an ice storage container according to a first embodiment of the present invention;

2 is a schematic partial sectional sectional view and a plan view of an ice storage container according to a second embodiment of the present invention;

3 is a schematic partial sectional sectional view and a plan view of an ice storage container according to a third embodiment of the present invention;

4 is a schematic partial sectional sectional view of an ice storage container according to a fourth embodiment of the present invention;

5 is a schematic partial sectional sectional view of an ice storage container according to a fifth embodiment of the present invention;

6 is a schematic partial sectional sectional view of an ice storage container according to a sixth embodiment of the present invention;

7 is a schematic cross-sectional view of a conventional ice container.

<Code Description of Main Parts of Drawing>

10a, 10b, 10c 10d, 10e, 10f: ice storage container 11a, 11b: container body

12: protrusion 13: depression

14: body opening 15: gap protrusion

20a, 20b, 20c, 20d, 20e, 123: expansion receiving portion

21a, 21b: opening 22a, 22b: neck

23a, 23b, 23c: expansion and contraction part 24: lower bend

25: expansion and contraction portion 26: expansion space

30, 140: charging unit 110: ice container

114: coupler 125: crimp ring

120: expansion receiving member 121: coupling portion

122: removal guide

The present invention relates to an ice storage container, and in particular, a container body for forming a hollow filling portion in which freezing liquid is filled; It is formed to be embedded in the filling portion in the region of the container body, the neck portion having an opening through which the refrigerant enters, and is formed in the lower portion of the neck, and the expansion of the freezing liquid with the expansion pressure corresponding to the expansion pressure which rises during freezing A resilient portion having a retracted space that is recirculated by elasticity and is formed in communication with the opening in response to the inflation pressure that is extinguished upon thawing at the time of thawing, and a lower bent portion formed under the retractable portion to reduce the fatigue of the retractable portion. It relates to an ice storage container comprising an expansion accommodating portion integrally configured.

The principle of ice heat storage cooling system is to use the freezer as a freezing heat source to cool the freezing point while flowing the refrigerant. The freezing liquid becomes ice and stores 80 kcal of latent heat for 1 kg of ice when it changes from liquid to solid. On the contrary, 80kcal latent heat is released even when ice is thawed with water, and the latent heat is used in the ice storage cooling system.

In general, an ice on ice system (ice on coli type) that freezes the ice storage system on the outside of the coil, and ice or ice container method (ice ice and ice) that freezes and thaws water or phase change material, which is the ice liquid filled in the ice storage container. container slurry) and an ice slurry type in which ice formed by using an ice-cold liquid mixed with an additive such as methanol or propylene glycol is formed into a slurry of fine particles, and a surface of a frozen plate through which refrigerant flows. After spraying water on the ice to icing the ice, the refrigerant gas is reversely circulated, and it is classified into an ice harvesting type (ice harvest type) in which the ice is removed in the form of ice from the freezing plate.

Here, in the ice storage system of the ice storage container type, a repetitive action of freezing and thawing the frozen liquid filled in the sealed ice storage container is essential.

For reference, when the water at 0 ℃ is frozen (phase change) with ice, a volume (thermal) expansion of 9.07% is achieved.

Therefore, ice storage containers usually made of high density polyethylene have a thin thickness of 1.5 to 2 mm due to the characteristics of the heat conduction, so if the sealed ice storage container cannot accommodate the volume expansion pressure due to freezing, If the volume expansion of the ice and the shrinking action of the ice are not absorbed efficiently, the ice storage container is damaged due to excessive accumulation of fatigue.

And ice storage container, in freezing and thawing action, has to heat exchange with the refrigerant flowing on the outer surface of ice storage container with the body as heat conduction part, and selects material having size of container, thickness of body and heat conductivity and pressure resistance. The buffer air layer in the ice storage container, which is formed for the purpose of buffering the freezing expansion pressure, insulates the directly contacting body and the freezing liquid to reduce freezing and thawing efficiency (ie, lowering of heat exchange efficiency per unit heat transfer area of the body). In addition, the expansion of the air layer is also limited by causing a decrease in heat storage rate and buoyancy problems.

However, ice storage containers manufactured by a simple manufacturing process are standard products, easy to mass-produce and supply, easy to operate as lightweight products, can be installed in any heat storage tank structural conditions, and have advantages over other ice storage methods such as low initial investment cost. There is this.

On the other hand, the serious drawback of ice storage containers is the breakage of ice storage containers, and it is almost impossible to identify, select and replace broken ice storage containers in a storage tank filled with a large amount of ice storage containers and refrigerants. There is a problem that the worker must empty and identify and replace the broken ice container with the naked eye.

As a method for reducing the ice expansion and thawing shrinkage, which are the causes of breakage of ice containers, new products have been developed such as the formation of corrugated depressions, bends, spiral protrusions, etc., which absorb expansion and contraction in ice containers. The change of the shape of the body alone is not effective in absorbing ice expansion and sea ice shrinkage, so the breakage problem of ice storage containers is not fundamentally solved.

In addition, conventional ice container has a buffer air space corresponding to 10% of the ice container container volume as a means to alleviate (freeze protection) of the freezing expansion, the body portion of the ice storage container facing the air space is freezing liquid It is caused by heat insulation and heat exchange efficiency, as well as reducing heat storage rate and buoyancy problems.

In addition, conventional ice storage containers have a problem in that the heat exchange properties of the ice and ice are low in the center of the ice storage container spaced apart from the body by freezing and thawing through a body forming a hollow outer shell.

In order to solve the problems of the conventional ice storage container, the invention "freezing container of the ice storage system" is disclosed in Korean Patent Publication No. 10-0525071 (2005. 10.28) filed by the applicant of the present invention on April 18, 2003 Known by

7 is a schematic cross-sectional view of a conventional ice container. As shown, the conventional freezing container 110 is a spherical structure in which the hollow filling part 140 is formed, and communicates with one side of the freezing container 110 to engage the coupling portion 121 of the expansion receiving member 120. ) Is provided with a coupler 114 coupled to the coupler, and a coupler 121 coupled to the coupler 114 and forming a coupling groove (not shown), and formed integrally with a lower portion of the coupler 121. An expansion receiving member 120 having an expansion receiving portion 123 to be received is coupled to the freezing container 110.

Here, the coupling sphere 114 is formed with a diameter smaller than the diameter of the coupling groove (not shown) formed along the outer circumferential surface of the coupling portion 121 in order to maintain the coupling airtight.

In addition, the expansion receiving member 120 is a tubular structure in which one side is opened and the other side is closed, and the coupling part 121 is formed with a coupling groove (not shown) that is press-fitted with the coupling port 14 of the icing container 110. And guides the coupling groove (not shown) to the coupler 114 to facilitate the insertion and separation easily, and is integrally configured with the insertion portion 122 and the expansion accommodating portion 123 having an inwardly inclined surface.

In addition, the outer diameter of the expansion receiving portion 123 is provided with an outer diameter equal to or slightly smaller than the diameter of the coupler 114 to facilitate insertion into the coupler 114.

The expansion accommodating part 123 is provided with a contracted contraction space 126 to allow a minimum amount of brine to flow even when the ice container 110 is frozen.

And it discloses the structure which further mounts the ring-shaped crimping ring 125 in the inner surface (inner peripheral surface) of the engaging part 121 which opposes a coupling groove.

This configuration prevents breakage due to freezing expansion and sea ice shrinkage, expands the heat transfer surface, improves freezing and thawing efficiency, and reduces the buoyancy problems and maintenance costs. Can provide.

By the way, the ice container for the ice heat storage system disclosed in the Patent Publication No. 10-0525071, and the coupler 114 is formed by opening a predetermined aperture in a region of the body of the ice container having a thickness of 1.5 mm and A coupling groove (not shown) coupled to the opening end of the coupling hole 114 of the coupling hole 114 by a close contact portion, and formed at a lower portion of the coupling groove to guide the insertion and separation easily and inclined inwardly. The coupling portion 121 forming the insertion portion 122 having a configuration of the airtight coupling,

In accordance with the freezing expansion of the freezing liquid in the freezing container 110, by shrinking to the area of the adjacent expansion receiving portion 123 of the coupling groove, the coupling groove press-coupled to the coupling hole (that is, the cross section of the opening) shrinkage deformation There has been a need to improve the structure, such that it is spaced apart from the coupler or the airtight is released.

In order to reinforce the strength of the hermetic coupling, the coupling groove is press-fitted to the coupling groove having an opening cross section of a thin thickness (about 1.5 mm), and then a ring-shaped pressing ring is formed on the inner circumferential surface of the coupling groove facing the coupling sphere. In press-fitting the 115, it is difficult to mount the pressing ring 115 to coincide with the opening cross section of the coupler 114, which has raised the need for improving its structure.

In addition, in order to reinforce the airtight strength, there is a need to enlarge each airtight surface to which the coupler 114 and the coupling groove tightly coupled.

And as a separate member hermetically coupled to the freezing container 110, the expansion receiving member 120 made of silicone rubber and synthetic rubber material, while having an excellent effect of preventing the breakage of the freezing container compared to the conventional freezing container As a result, the necessity of simplifying the structure and reducing the cost was raised, which contributed to the complexity of the structure and the cost increase.

Therefore, the present invention is devised to solve the problems of the conventional ice container and to provide a more advanced and practical ice storage container.

Accordingly, an object of the present invention is to provide a means capable of efficiently absorbing freezing expansion and thawing shrinkage of freezing liquid in an ice storage container to prevent breakage of the container body.

Another object of the present invention is to eliminate the heat exchange dead zone and buoyancy by excluding the buffer air layer in the live part.

It is still another object of the present invention to provide a means for improving heat exchange properties and efficiency.

An object of the present invention is to provide a structure that can easily produce medium and large ice storage containers.

Another object of the present invention is to provide an ice storage container which can reduce manufacturing cost and maintenance cost.

In order to achieve the above object, the present invention, in the ice storage container, the container body to form a hollow filling portion is filled with icing liquid; It is formed to be embedded in the filling portion in the region of the container body, the neck portion having an opening through which the refrigerant enters, and is formed in the lower portion of the neck, and the expansion of the freezing liquid with the expansion pressure corresponding to the expansion pressure which rises during freezing A resilient portion having a retracted space that is recirculated by elasticity and is formed in communication with the opening in response to the inflation pressure that is extinguished upon thawing at the time of thawing, and a lower bent portion formed under the retractable portion to reduce the fatigue of the retractable portion. It provides an ice storage container, characterized in that it comprises an expansion receiving portion integrally configured.

Here, the container body is preferably made of any one of a spherical, cylindrical, angular, cylindrical and polygonal body, it is formed to be embedded inside the charging unit integrally with the "container body" of the technical idea of the present invention, The shape of the container body is different in the application of an expansion receiving portion having a configuration in which the icing liquid is restored to its original shape by elasticity in response to the expansion pressure which rises during freezing and in response to the expansion pressure that disappears upon thawing. Even if it is, it is not bound by its application.

The container body may further include a plurality of hemispherical protrusions that communicate with the filling part and surround the circumference of the container body as means for improving freezing and thawing properties and increasing a heat exchange area. It may be formed by further comprising a portion.

Next, in the charging part, it is preferable to exclude the buffer air layer in order to remove the heat exchange dead zone and buoyancy.

Next, the opening and the neck are preferably formed in a circular shape, but may be easily configured in other shapes such as an ellipse, so that the shape is not limited.

Next, between the neck and the stretchable portion, it is preferable that the stretchable portion further includes a stretchable flexure portion that contracts the stretchable space and reinforces the original restoration in response to the expansion pressure.

Here, the elastic bending portion, when the expansion and contraction of the expansion and contraction of the expansion portion is bent upwardly stretched or stretched downwardly in accordance with the advancing direction of freezing, and to reinforce the elasticity of the original restoration of the elastic portion It is a means.

And it is preferable that the maximum contraction range of the expansion space does not exceed 10% of the filling part volume.

Next, since there is no nominal shape term coinciding with the three-dimensional shape for facilitating the stretching action in the present invention, the stretchable part is any one of an ellipse shape, a rugby ball shape, and a diamond shape as a representation of a similar shape. It is preferable that it is made in the shape of

Here, the expansion and contraction portion is formed to be spread from the lower portion of the neck portion to the central point of the elastic portion, in order to facilitate the expansion and contraction, it is preferably formed to be reduced to the lower bent portion from the central point of the elastic portion.

In addition, the stretchable portion may be formed in a plural number.

In addition, the shape of the expansion and contraction, the structure and shape can be modified through research and experiment so that the expansion and contraction more easily, it is formed to be embedded in the charging unit integrally with the container body of the technical idea of the present invention. In the case where the freezing liquid receives the expansion pressure in response to the inflation pressure that rises during freezing and applies the expansion receiving portion having a configuration that is restored to its original shape by elasticity in response to the expansion pressure that disappears during thawing, Although the structure is different, it is not bound by its application.

Next, the expansion receiving portion is preferably formed of the same material and thickness as the container body, the thickness of the expansion receiving portion can be varied through experiments to adopt the optimal elasticity.

Next, although not shown in the drawings as a conventional technique, the description thereof will be omitted in the embodiments described later, but the ice storage container for forming the expansion receiving portion has an extruding blow molding and an injection molding method, which is an existing plastic molding method. Since it is difficult to manufacture a single body by injection blow molding, the container body is molded and manufactured to have a body opening with a size at which one area of the expansion receiving portion can be embedded, and heat-sealed to the body opening. It is preferable that a shell having a size is integrally formed at the end of the neck, and after filling the freezing liquid through the body opening, the shell formed integrally at the end of the neck is sealed by heat fusion to the body opening. Do. Alternatively, it is possible to make a separate manufacture and seal combination of the body of the ice storage container and the expansion receiving portion, but this can be carried out sufficiently within the ordinary technical scope, so that the application is not limited.

Here, in the case of a spherical container body, when the body opening in which the expansion receiving portion is embedded is formed by reducing the uppermost space of the filling portion, the icing liquid corresponding to the reduced space cannot be filled. When sealingly expanding the expansion receiving part, an air layer may be formed in the charging part, which may reduce heat exchange efficiency and generate buoyancy. Therefore, in order to prevent this, the joint part of the neck and the neck part sealingly coupled with the body opening should be formed flat. Preferably, the container body may further include a separate filling hole, and in this case, the expansion and sealing unit is thermally fused and sealed to the container body, and then the filling liquid is filled through the filling hole. The sphere is preferably sealed by heat fusion.

Next, in the case where the container body is in a cylindrical shape, it is preferable to further include a gap projection on each side of the container body in communication with the charging unit in order to maintain the refrigerant flow interval between the container body.

Next, in the medium-large container body, it is preferable to form a plurality of expanded accommodation portions in order to efficiently absorb freezing expansion and thawing shrinkage.

 Next, the ice storage container and the expansion receiving portion is preferably made of a synthetic resin material such as high density polyethylene.

Next, it is preferable that the bent portion of each component constituting the expanded accommodation portion bends to a smooth curved surface in order to reduce fatigue transferred by freezing expansion and expansion and contraction of the sea ice shrinkage.

Hereinafter, various exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Prior to the description, detailed descriptions of functions and operations of well-known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted. In various embodiments, the same reference numerals are used to refer to elements having the same configuration. The embodiment will be described, and other embodiments will be described only with respect to the configuration different from the embodiment.

1 is a schematic partial sectional sectional view and a plan view of an ice storage container according to a first embodiment of the present invention. As shown, the ice storage container (10a) is a spherical structure in which the hollow filling portion 30 is formed, the container body (11a) to form a hollow filling portion 30 is filled with icing liquid; A neck portion 22a having an opening 21a and a neck portion 22a formed in the body opening 14 formed to penetrate one region of the container body 11a and having an opening 21a, and the neck portion 22a of the neck portion 22a. The tubular shape consists of the expansion-contraction part 23a formed in the lower part, the lower bending part 24 formed in the lower part of the expansion-contraction part 23a, and the expansion-contraction space 26 formed in communication with the said opening 21a. An expansion receiving portion 20a is provided, and the expansion and contraction portion 23a contracts the expansion and contraction space 26 to accommodate the expansion pressure in response to the expansion pressure at which the freezing liquid rises when frozen. It has a structure that is restored to its original shape by elasticity in response to the expansion pressure.

Here, the expansion receiving portion 20a forms a circular stretchable portion 23a in plan view, and the opening 21a also has a circular shape.

Next, the operation of the above-described first embodiment will be briefly described.

First, when the freezing heat is transferred from the refrigerant (Brine) flowing along the outer surface of the ice storage container 10a and the freezing liquid in the filling unit 30 is frozen, an expansion pressure is generated.

The expansion and contraction portion 23a acting at a pressure lower than the pressure for inflating the sealed container body 11a moves to the expansion and contraction space 26 as shown by reference numeral "A" in the drawing in correspondence with the expansion pressure. As the container body 11a is pushed in and contracted, the container body 11a maintains a pressure low enough to push the expansion and contraction part 23a into the expansion and contraction space 26. The fatigue of (11a) is greatly reduced to prevent breakage from fatigue accumulation.

Next, when the thawing heat is transferred from the refrigerant (Brine) flowing along the outer surface of the ice storage container 10a, and the ice frozen in the charging unit 30 is thawed, the expansion pressure disappears.

The expansion and contraction portion 23a is restored to its original shape by elasticity in response to the extinction pressure that is extinguished, and is converted to the ice storage container 10a state before freezing.

This ice expansion and sea ice shrinkage action is repeated repeatedly according to the cooling operation.

2 is a partial cross-sectional schematic and plan view of an ice storage container according to a second embodiment of the present invention. As shown, the ice storage container 10b is a spherical structure in which the hollow filling part 30 is formed. Unlike the first embodiment described above, the ice storage container 10b has a rugby ball-shaped expansion and contraction part 23b when viewed in cross section. The opening 21b has an elliptical shape.

By such a configuration, it is possible to provide an elastic portion 23b having a structure in which elasticity is enhanced.

Since the operation of the second embodiment described above is equivalent to the operation of the first embodiment, description thereof will be omitted.

3 is a partial cross-sectional view and a plan view of an ice storage container according to a third embodiment of the present invention. As shown, the ice storage container 10c is a spherical structure in which the hollow filling part 30 is formed, and unlike the second embodiment described above, between the lower part of the neck 22b and the upper part of the elastic part 23b. The elastic bending portion 25 is further included.

By this configuration, the stretchable flexion portion 25 is bent to extend or bend downward stretch the stretchable portion (23b) in accordance with the expansion direction of the freezing during the contraction of the stretchable space (26) The action and elasticity of the original restoration of the elastic portion 23b can be reinforced.

Since the operation of the third embodiment described above is equivalent to the operation of the first embodiment, description thereof will be omitted.

4 is a schematic partial sectional sectional view of an ice storage container according to a fourth embodiment of the present invention. As shown, the ice storage container 10d has a circular structure in which the hollow filling part 30 is formed. Unlike the above-described embodiments, the ice storage container 10d forms a diamond-shaped stretching part 23c, and has a circular opening 21a. ).

By such a configuration, the elastic strength of the expansion and contraction portion 23c can be strengthened, and since the expansion receiving portion 20d having a shorter length in plan view does not require an elliptical opening, the circular structure is simple. The opening 21a is formed.

Since the operation of the fourth embodiment described above is equivalent to the operation of the first embodiment, description thereof will be omitted.

5 is a schematic partial sectional sectional view of an ice storage container according to a fifth embodiment of the present invention. As shown, the ice storage container (10e), the hollow filling portion 30 is formed, the length of the container body (11b) is a relatively long cylindrical structure, unlike the above-described embodiments, of the container body (11b) On both sides, an expansion receiving portion 20d is formed, and the container body 11b is formed with a plurality of protrusions 12 circumferentially formed on the outer surface of the container body 11b in communication with the filling part 30. Doing.

With this configuration, it is possible to efficiently absorb freezing expansion and thawing shrinkage of the cylindrical ice storage container 10e having a relatively long structure, and to enlarge the heat exchange area through the plurality of protrusions 12 and the container body ( It is possible to strengthen the self-support of 11b), and to form the refrigerant flow interval for the ice storage period.

Since the operation of the fifth embodiment described above is equivalent to that of the first embodiment, description thereof will be omitted.

6 is a schematic partial cutaway cross-sectional view of an ice storage container according to a sixth embodiment of the present invention. As shown, the ice storage container (10f), the hollow filling portion 30 is formed, and the length of the container body (11b) is a relatively long angular cylindrical structure, unlike the above embodiments, the container body (11b) On one side of the expansion and contraction portion 23b and the expansion and contraction portion 23b is formed between the expansion receiving portion 20e having a stretchable flexion portion 25 is further formed, the container body (11b) In addition, a plurality of recesses 13 formed on the outer surface of the container body (11b) in communication with the charging unit 30 is formed to further include, and the container body (11b) in communication with the charging unit (30) It further comprises a plurality of gap projections 15 to form a refrigerant flow interval on the outer surface of the.

By such a configuration, it is possible to efficiently absorb freezing expansion and thawing contraction of each cylindrical ice storage container 10f having a relatively long structure, and to enlarge the heat exchange area through the plurality of recesses 13 and the vessel. It is possible to reinforce the self-support of the body (11b), it is possible to form a refrigerant flow interval between the ice storage container (10f).

Since the operation of the sixth embodiment described above is equivalent to the operation of the first embodiment, description thereof will be omitted.

In the above-described embodiment of the present invention, the ice-shaft container having a spherical shape, a cylindrical shape, and a cylindrical shape has been described above. However, the present invention may also be applied to other shapes such as a polygonal cylinder, a polyhedron cylinder, and an oval in which a hollow filling part is formed. Can be.

In the above-described embodiment of the present invention, the elliptical shape, the rugby ball shape, and the diamond-shaped stretch part are described as preferable examples, but may be applied to the stretch part of another shape.

As described above, according to the present invention, it is possible to effectively prevent freezing expansion and thawing shrinkage of the freezing liquid in the ice storage container to prevent damage to the container body, and to remove the heat exchange dead zone and buoyancy by excluding the buffer air layer in the charging part. It is possible to improve heat exchange properties and efficiency, to easily manufacture medium and large ice storage containers, and to provide an ice storage container that can reduce manufacturing costs and maintenance costs.

Claims (3)

In ice storage containers, A container body which forms a hollow filling part in which freezing liquid is filled; It is formed to be embedded in the filling portion in the region of the container body, the neck portion having an opening through which the refrigerant enters, and is formed in the lower portion of the neck, and the expansion of the freezing liquid with the expansion pressure corresponding to the expansion pressure which rises during freezing A resilient portion having a retracted space that is recirculated by elasticity and is formed in communication with the opening in response to the inflation pressure that is extinguished upon thawing at the time of thawing; Ice storage container, characterized in that it comprises an expansion receiving portion integrally configured. The method of claim 1, The container body further comprises any one of a hemispherical protrusion formed in communication with the filling portion and a hemispherical recessed portion as a means for improving freezing and thawing properties and increasing a heat exchange area. Vessel. The method of claim 1, Between the neck portion and the elastic portion, ice storage container, characterized in that it further comprises a stretchable flexure to reinforce the expansion and contraction of the stretching portion.

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