KR102536070B1 - apparatus for making ice - Google Patents

Abstract

In order to improve use safety, the present invention includes a heat conduction plate made of a metal material provided in a flat plate shape, and an evaporator including a pipe made of metal coupled to one surface of the heat conduction plate and bent along the longitudinal and transverse directions; And an ice generating unit spaced apart from each other along the longitudinal and transverse directions and having a plurality of ice generating grooves formed in the front portion, respectively, formed integrally with the inner surface of the ice generating unit, but the heat conduction plate and the outer contour of the pipe An ice-making apparatus includes an ice-making case formed by insert injection molding of a synthetic resin material, including a heat transfer cover portion molded to surround the evaporator along the evaporator.

Description

Ice maker {apparatus for making ice}

The present invention relates to an ice maker, and more particularly, to an ice maker with improved use safety.

BACKGROUND OF THE INVENTION [0002] In general, an ice maker for making a large amount of ice is used in places such as restaurants and cafes.

For example, the ice maker may be configured such that a plurality of pockets having a shape suitable for the size of ice cubes to be manufactured are arranged on a base plate, and refrigerant pipes are piped to the outer plane and side surfaces of the pockets to be integrated with the pockets. there is.

A typical method of manufacturing ice cubes using such an ice maker is to keep the pockets cool by a refrigerant circulating through a refrigerant pipe in a state where the pockets are turned downward, and then spray water into the pockets to make ice. After the icing is completed, hot gas is applied to the base plate to slightly thaw the interface between the pocket and the ice, so that the ice cubes fall off in a natural fall method and accumulate in the storage unit.

Here, since the conventional ice maker is made of copper for both the pocket and the refrigerant pipe, there are disadvantages in that it is heavy and increases equipment cost. In addition, if the ice maker is heavy, it is difficult to handle during transportation and installation, the capacity of other facilities for supporting and driving the ice maker must be increased, and it is inevitably difficult for a worker to lift and carry the ice maker. Moreover, since copper is expensive as a raw material, there is a problem of increasing the overall cost of equipment as well as the evaporator assembly.

In particular, since the pockets of the conventional ice maker are made of copper, patina, a harmful substance generated by corrosion, adheres to the ice surface, which is harmful to the human body.

To solve this problem, hot-dip plating of tin or the like can be performed on the surface of the pocket made of copper, but there is a problem in that the plating layer is peeled off during long-term use. Furthermore, in order to solve the corrosion problem, when the material of the pocket is made of a synthetic resin such as plastic, the ice-making power is lowered, so the ice-making time is increased and economical efficiency is lowered.

Korean Patent Publication No. 10-2016-0149572

In order to solve the above problems, an object of the present invention is to provide an ice maker with improved use safety.

In order to solve the above problems, the present invention includes a heat conduction plate made of a metal material provided in a flat plate shape, and a pipe made of a metal material coupled to one surface of the heat conduction plate and bent along the longitudinal and transverse directions. evaporator; And an ice generating unit spaced apart from each other along the longitudinal and transverse directions and having a plurality of ice generating grooves formed in the front portion, respectively, formed integrally with the inner surface of the ice generating unit, but the heat conduction plate and the outer contour of the pipe An ice making case formed by insert injection of a synthetic resin material including a heat transfer cover portion molded while surrounding the evaporator along the evaporator, wherein the heat conduction plate communicates with the center of the inner surface of each ice making unit and is spaced apart from each other along the longitudinal and lateral directions A plurality of through-holes are formed to pass through, and the pipes are spaced apart from the through-holes and are curvedly disposed, aligned along the inner rim of the ice making unit, and the pipes and the heat conduction plate are clad-welded to each other to be in close contact with each other. The hole cover part is integrally insert-injected and extended to the heat transfer cover part by covering the inner circumference of the through-hole and closely coupled to the heat transfer cover part, and the hole cover part is tightly covered on the front and rear surfaces of the heat conduction plate and is insert-injected, and the hole cover In the portion, a communication hole is set to be less than the inner diameter of the through hole and formed through the inner circumference of the through hole, and the ice making case contains 8 to 97 wt% of a thermoplastic resin and 92 to 3 wt% of a ceramic solid with respect to the total weight%. An ice-making device characterized by the present invention is provided.

On the other hand, the present invention is a heat conduction plate made of a metal material provided in a flat plate shape and having a plurality of through holes spaced apart from each other along the longitudinal and lateral directions, and spaced apart from the through holes along the longitudinal and lateral directions and curved A first step in which the pipes made of metal are arranged; a second step of manufacturing an evaporator including the heat conduction plate and the pipe by clad-welding the pipe so that the pipe is closely coupled to one surface of the heat conduction plate; And spaced apart from each other along the longitudinal and transverse directions, provided with a plurality of ice generating grooves, each of which is formed by insert injection molding, and at the same time, formed integrally with the inner surface of the ice generating unit, the heat conduction plate and the pipe An ice making case including the ice generator and the heat transfer cover is manufactured by insert injection molding of a heat transfer cover part wrapped around and molded to the evaporator along the outer surface contour of the ice generator, and each of the through holes communicates with each other at the center of the inner surface of the ice maker. wherein the pipe is aligned along the rim of the inner surface of the ice making unit, and a hole cover unit that is closely coupled to the heat transfer cover unit by surrounding the inner circumference of the through hole extends integrally, and the through hole of the hole cover unit extends through the through hole. A method of manufacturing an ice maker including a third step of forming a hole smaller than the inner diameter of the through hole and passing through the inner circumference of the through hole.

Through the above solution, the present invention provides the following effects.

First, in order to prevent patina, a harmful substance generated by corrosion of the evaporator, from being attached to the ice surface, the heat transfer cover integrally formed with the ice generating unit wraps along the outer contour of the evaporator and is formed by insert injection molding of synthetic resin material. Accordingly, external exposure of the evaporator is blocked, and contact between the evaporator and ice is prevented to provide ice harmless to the human body.

Second, the pipes of the evaporator are aligned along the inner edge of the ice maker, communicate with the center of the inner surface of each ice maker on the heat conduction plate, and are spaced apart from the through-hole formed through, and are clad welded and tightly coupled to each other in a curved arrangement. Since the pipe and the heat conduction plate are organically arranged with the ice generating unit, the heat conduction efficiency can be remarkably improved.

Third, on the heat conduction plate, a welded groove corresponding to the outer contour of the pipe is formed in a curved shape in a 'L' shape along the line where the pipes are arranged, or the pipe is provided as a flat pipe having a square cross section with rounded corners. As the clad is welded in a state in which one surface is in surface contact with the heat conduction plate, the heat conduction efficiency can be remarkably improved.

Fourth, the heat transfer cover part covers the inner circumference of the through hole and is closely coupled. As the hole cover part integrally insert-injected and extended, the external exposure of the evaporator is completely blocked, and the formation of a gap between the evaporator and the ice making case, which are made of different materials, is prevented in advance even during long-term use. It can be.

1 is a perspective view showing a rear part of an ice maker according to an embodiment of the present invention;
2 is a perspective view illustrating a front portion of an ice maker according to an embodiment of the present invention;
3 is a perspective view illustrating an evaporator in the ice maker according to an embodiment of the present invention;
4 is a perspective view illustrating an ice making case in the ice making apparatus according to an embodiment of the present invention;
5 is an exemplary diagram illustrating a disposition of pipes in an ice maker according to an embodiment of the present invention;
6 is a cross-sectional view in the AB direction of FIG. 5;
7 is a flowchart illustrating a manufacturing method of an ice maker according to an embodiment of the present invention.

Hereinafter, an ice maker and a manufacturing method thereof according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a rear portion of an ice maker according to an embodiment of the present invention, FIG. 2 is a perspective view showing a front portion of the ice maker according to an embodiment of the present invention, and FIG. 4 is a perspective view showing an ice-making case in the ice-making apparatus according to an embodiment of the present invention, and FIG. 5 is a perspective view showing the arrangement of pipes in the ice-making apparatus according to an embodiment of the present invention. FIG. 6 is a cross-sectional view in the A-B direction of FIG. 5, and FIG. 7 is a flowchart illustrating a manufacturing method of an ice maker according to an embodiment of the present invention.

As shown in FIGS. 1 to 7 , the ice making apparatus 100 according to an embodiment of the present invention includes an evaporator 10 and an ice making case 20 .

In addition, in the method of manufacturing an ice maker according to an embodiment of the present invention, the heat conduction plate and the pipe are arranged (s10), the heat conduction plate and the pipe are clad welded so that the heat conduction plate and the pipe are tightly coupled to manufacture an evaporator (s20), and the heat transfer cover covers the evaporator and molds it. It includes a series of steps of insert injection molding (s30) as much as possible.

Here, in the ice making apparatus 100 according to an embodiment of the present invention, in a state where the ice making groove 21a formed in the ice making case 20 is turned downward, the pipe 12 provided in the evaporator 10 is turned over. ) It is a device for making ice in such a way that the heat conduction plate 11 is kept cool by the refrigerant circulating therein, and at the same time, water is sprayed into the ice-producing grooves 21a to deposit ice. Of course, the manufacturing method of ice produced by the ice maker 100 according to an embodiment of the present invention is not limited to the above example.

Meanwhile, a heat conduction plate 11 made of a metal material provided in a flat plate shape and a pipe 12 made of a metal material bent along the longitudinal and transverse directions are arranged (s10).

In detail, the heat conduction plate 11 is provided in a flat plate shape and is preferably made of a metal material having excellent thermal conductivity such as aluminum or copper. Here, in the heat conduction plate 11, a plurality of through-holes 11a communicate with the center of the inner surface of the ice generator 21 formed in plurality in the ice-making case 20 to be described later and are spaced apart from each other along the longitudinal and lateral directions. Forming through is preferred. In this case, the intervals between the ice making units 21 and the intervals between the through holes 11a may be set at uniform intervals along the longitudinal and lateral directions.

Further, the pipe 12 is preferably provided to be curved along the longitudinal and transverse directions, and the pipe 12 is preferably made of a metal material such as aluminum and copper having excellent thermal conductivity.

Meanwhile, the evaporator 10 including the heat conduction plate 11 and the pipe 12 is manufactured by mutual clad welding such that the pipe 12 is tightly coupled to one surface of the heat conduction plate 11 (s20). . At this time, it is preferable to understand that the evaporator 10 includes the heat conduction plate 11 and the pipe 12.

In addition, it is preferable that the pipe 12 be coupled to one surface of the heat conduction plate 11 and bent along the longitudinal and transverse directions. At this time, most preferably, the pipe 12 may be coupled to the front surface of the heat conduction plate 11 . Here, the pipe 12 is spaced apart from each of the through-holes 11a in a 'L' shape and is preferably disposed curvedly. That is, the pipe 12 may be disposed in a 'D' shape between the through holes 11a along the longitudinal and transverse directions.

Meanwhile, it is preferable that the pipe 12 and the heat conduction plate 11 are tightly coupled to each other by clad welding. At this time, the clad welding refers to a method in which the pipe 12 and the heat conduction plate 11 are immersed in a liquid coating material and a solvent for clad welding, and then aligned and welded to each other, and the pipe 12 and the heat conduction plate 11 are welded. (11) may cover a method of welding after applying a coating material and a solvent to the joint area in a mutually aligned state, but is not limited to the above example.

Here, in the heat conduction plate 11, a welding groove for increasing the contact area is curved in a 'D' shape along the line where the pipe 12 is aligned and disposed, corresponding to the outer contour of the pipe 12, and is formed with a depression. It can be. Through this, the pipe 12 may be arranged along the welding groove formed in the heat conduction plate 11 and then clad welded.

Alternatively, the pipe 12 is plastically deformed into a flat tube having a square cross section having rounded corners by compressing a pipe having a circular cross section, and then clad in a state in which one surface is in surface contact with the flat heat conduction plate 11 can be welded

On the other hand, a plurality of ice making parts 21 spaced apart from each other along the longitudinal and lateral directions and having ice making grooves 21a recessed therein are formed by insert injection molding, and at the same time, the inner surface of the ice making part 21 The heat transfer cover part 22 formed integrally with the heat conduction plate 11 and wrapped around the evaporator 10 along the outer contours of the pipe 12 and formed by insert injection molding of a synthetic resin material to form the ice making part An ice making case 20 including (21) and the heat transfer cover part 22 is manufactured (S30).

Here, it is preferable that the ice making case 20 includes an ice making unit 21 and a heat transfer cover unit 22 integrally formed with each other. At this time, it is preferable that the ice making case 20 is integrally made of any one of polypropylene and polyethylene. In addition, the ice making case 20 may be manufactured by insert injection molding.

Alternatively, in some cases, the ice making case 20 may include 8 to 97 wt% of a thermoplastic resin and 92 to 3 wt% of a ceramic solid having a thermal conductivity of 250 W/m·K or more, based on the total weight%.

Here, the thermoplastic resin is polybutylene terephthalate, polyethylene terephthalate, aromatic polyamide, polyamide, polycarbonate, polystyrene, polyphenylene sulfide, thermotropic liquid crystal polymer, polysulfone, polyethersulfone, polyetherimide, poly Ether ether ketone, polyarylate, polymethylmethyl acrylate, polyvinyl alcohol, polypropylene, polyethylene, polyacrylonitrile butadiene styrene copolymer, polytetramethylene oxide-1,4-butanediol copolymer (polybutylene tereph ralate elastomer), styrene-containing copolymers (SBR, SBS, ASA), fluorine-based resins (PVDF, PTFE, FEP), polyvinyl chloride, and polyacrylonitrile. At least one member may be selected from the group consisting of there is.

In addition, the ceramic solid is silicon carbide, boron nitride, diamond, beryllium oxide, boron phosphide, aluminum nitride, beryllium sulfide, boron arsenide, silicon, gallium nitride, aluminum having a thermal conductivity of 250 W / m K or more At least one kind may be selected from the group consisting of phosphide and gallium phosphide.

Here, in some cases, the ice making case 20 may further include 2 to 15% by weight of a filler selected from the group consisting of flakes, glass fibers or carbon fibers, and halogen or non-halogen flame retardants. there is.

At this time, the halogen or non-halogen flame retardant is bromine-based carbonate oligomer, Sb2O3, phosphorus-based and red-based flame retardants, melamine cyanurate, melamine, triphenyl isocyanurate, melamine phosphate, melamine pyrophosphate, ammonium polyphosphate, At least one kind may be selected from the group consisting of alkyl amine phosphate, melamine resin and zinc borate.

Accordingly, the ice making case 20 may be made of a non-metallic material and have high thermal conductivity.

Meanwhile, it is preferable that a plurality of ice making parts 21 are spaced apart from each other along the longitudinal and lateral directions, and the ice making grooves 21a are recessed in the front part to the rear. At this time, the contour of the ice-producing groove 21a may be set to correspond to the outer contour of the ice to be created.

In addition, the heat transfer cover part 22 is integrally formed with the inner surface of the ice generator 21 and surrounds the evaporator 10 along the outer contours of the heat conduction plate 11 and the pipe 12. Combining is preferred. It is preferable that the ice generating unit 21 and the heat transfer cover unit 22 are integrally formed by insert injection molding of a synthetic resin material. In this case, preferably, the ice making case 20 including the ice making unit 21 and the heat transfer cover unit 22 integrally formed with each other may be made of any one of polypropylene and polyethylene.

Meanwhile, a hole cover part 22a tightly coupled to the inner circumference of the through hole 11a is integrally extended to the heat transfer cover part 22, and the ice generating groove 21a is formed in the hole cover part 22a. A through hole is set smaller than the inner diameter of the through hole 11a to prevent the inside of the ice producing groove 21a from being in a vacuum state when the ice generated in the ice is separated, and is formed on the inner circumference of the through hole 11a in the forward and backward directions. Forming through is preferred.

Here, the hole cover portion 22a surrounds the inner circumference of the through hole 11a and closely covers the front and rear surfaces of the heat conduction plate 11 and is preferably insert-injected. Accordingly, the area where the through hole 11a is formed in the heat conduction plate 11 is also sealed by the hole cover part 22a made of synthetic resin, so that it can be blocked from the outside.

At this time, it is preferable that the communication hole is formed through the hole cover part 22a in the front and rear directions, and the inner diameter is set to have a difference by the thickness of the hole cover part 22a from the inner diameter of the through hole 11a. can In addition, the communication hole may be formed in a hole shape according to an inverse correspondence to the contour of the mold during insert injection.

On the other hand, on the surface of the heat transfer cover part 22, a raised part 22b integrally protrudes forward and backward from a position corresponding to the pipe 12, and on the heat transfer cover part 22, the raised part 22b It is preferable that an inner space 22e surrounding the pipe 12 is formed inside the position corresponding to ).

In addition, the pipe 12 is coupled to any one surface of the heat conduction plate 11 and disposed at the rear of the ice making unit 21 to be described later, but is preferably bent along the longitudinal and transverse directions. At this time, most preferably, the pipe 12 may be coupled to the front surface of the heat conduction plate 11 adjacent to the ice generator 21, and the front surface of the heat conduction plate 11 and the ice generator 21 ) may be disposed between the rear ends of

In addition, a recessed groove 22c may be recessed between the raised parts 22b on the surface of the heat transfer cover part 22 . In this case, each of the ice making parts 21 may integrally extend downward from the recessed groove 22c.

Here, referring to FIG. 5 , the pipe 12 is spaced apart from each of the through holes 11a in a 'D' shape and curvedly disposed, and is preferably aligned along the edge of the ice generator 21. do.

On the other hand, in the heat transfer cover part 22, a pair communicating with the inner space 22e is exposed so that the ends 12a and 12b of the pipe 12 are exposed on either side corresponding to the side surface of the raised part 22b. It is preferable that the opening 22d is formed. At this time, it is preferable that the ends 12a and 12b of the pipe 12 extend from the inside of the heat transfer cover part 22 to the outside of the opening 22d.

In this way, the inner surface of the ice making part 21 in which the ice making groove 21a is recessed is prevented from adhering to the surface of the ice, which is a harmful substance generated by the corrosion of the evaporator 10 , in advance. and the heat conduction cover part 22 formed integrally with and wrapped around the outer contour of the evaporator 10 including the heat conduction plate 11 and the pipe 12 made of a metal material that is easily corroded, and the heat transfer cover part 22 As the ice making case 20 is formed by insert injection molding of a synthetic resin material, external exposure of the evaporator 10 is blocked and contact between the evaporator 10 and ice is prevented, thereby providing ice harmless to the human body.

In addition, the pipe 12 is aligned along the rim of the inner surface of the ice maker 21 and communicates with the heat conduction plate 11 at the center of the inner surface of each ice maker 21 and is formed through the through hole. As the pipe 12 and the heat conduction plate 11 are organically arranged with the ice generating unit 21 as they are clad welded and tightly coupled to each other in a state of being curved and spaced apart from (11a), the heat conduction efficiency is remarkably improved. It can be.

In addition, in the heat conduction plate 11, a welding groove is formed to be bent in a 'D' shape along the line where the pipe 12 is aligned and disposed corresponding to the outer contour of the pipe 12 and is recessed, or the pipe ( 12) is provided as a flat tube having a square cross-section with rounded corners, and as the clad is welded in a state in which one surface is in surface contact with the heat conduction plate 11, the heat conduction efficiency can be remarkably improved.

In particular, as the hole cover part 22a, which wraps around the inner circumference of the through hole 11a and is closely coupled to the heat transfer cover part 22, is integrally insert-injected and extended, external exposure of the evaporator 10 is completely blocked. However, even when used for a long time, the formation of a gap between the evaporator 10 and the ice making case 20, which are made of different materials, can be prevented in advance.

In addition, since a through hole is formed through the hole cover part 22a made of synthetic resin to prevent vacuum formation when ice is separated, contact between ice and metal is blocked in advance, thereby improving use safety.

In addition, since the ice making case 20 includes 8 to 97 wt % of thermoplastic resin and 92 to 3 wt % of ceramic solids with respect to the total weight %, the ice making case 20 is made of a non-metallic material and has high thermal conductivity. It is provided so that the ice production speed may be increased.

In this case, terms such as "include", "comprise" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

As described above, the present invention is not limited to the above-described embodiments, and it is possible to modify and implement the present invention by those skilled in the art without departing from the scope claimed in the claims of the present invention. And, such modifications fall within the scope of the present invention.

100: ice maker 10: evaporator
11: heat conduction plate 12: pipe
20: ice making case 21: ice generating unit
22: heat transfer cover

Claims (5)

An evaporator including a heat conduction plate made of a metal material provided in a flat plate shape, and a pipe made of metal coupled to one surface of the heat conduction plate and bent along the longitudinal and transverse directions; and
An ice generating unit spaced apart from each other along the longitudinal and transverse directions and provided with a plurality of ice generating grooves in the front portion, respectively, formed integrally with the inner surface of the ice generating unit, but the outer contour of the heat conduction plate and the pipe An ice-making case formed by insert injection molding of a synthetic resin material including a heat transfer cover portion wrapped around the evaporator and molded according to the evaporator,
In the heat conduction plate, a plurality of through-holes communicating with the center of the inner surface of each of the ice generating units and spaced apart from each other in the longitudinal and lateral directions are formed through,
The pipes are spaced apart from each of the through-holes and are curvedly arranged, and aligned along an inner edge of the ice making unit,
The pipe and the heat conduction plate are tightly coupled by clad welding to each other,
The heat transfer cover part is integrally insert-injected and extended with a hole cover part wrapped around the inner circumference of the through hole and closely coupled, and the hole cover part is closely covered on the front and rear surfaces of the heat conduction plate and is insert-injected,
In the hole cover portion, a communication hole is set to be less than the inner diameter of the through hole and formed through the inner circumference of the through hole,
The ice-making case comprises 8 to 97% by weight of thermoplastic resin and 92 to 3% by weight of ceramic solids, based on the total weight%. delete According to claim 1,
In the heat conduction plate, a welding groove is formed to be bent in a 'L' shape along a line where the pipes are aligned and disposed, corresponding to the outer contour of the pipe and recessed,
The ice making apparatus according to claim 1 , wherein the pipe is provided as a flat tube having a rounded corner and has a square cross-section and is clad welded in a state in which one surface is in surface contact with the heat conduction plate. delete delete

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