KR20150025118A - Method for forming multi-insulation structure of hot water heating apparatus and hot water heating apparatus having the multi-insulation structure - Google Patents

Abstract

The present invention provides a method to form a multi-insulation structure for a hot water heating apparatus comprising: a hot water heating apparatus preparation step preparing a cylindrical hot water heating apparatus; a vacuum insulation installation step forming a plurality of folding portions in a vacuum insulation, covered to adhere to an outer side of the hot water heating apparatus; and an outer insulation installation step installing an outer installation in an outer side of the vacuum insulation. Moreover, the present invention provides a hot water heating apparatus having a multi-insulation structure.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for forming a multi-insulation structure for a heater, and a method for forming a multi-insulation structure for a multi-

The present invention relates to a method of forming a multi-insulation structure for a heater and a heat sink having a multi-insulation structure, and more particularly, to a method of forming a multi-insulation structure for a heater capable of reducing an air gap at the outer surface of a heat- And a heat exchanger having a multi-adiabatic structure.

In general, energy conservation is being promoted in various fields in order to suppress the emission of CO2 as a society coping with global warming prevention.

In recent electric appliances, especially household appliances related to cold and heat, it is mainstream to adopt a vacuum insulator to enhance the heat insulating performance from the viewpoint of reducing the power consumption.

In addition, in order to suppress all energy consumption from various raw materials to the production process of the product, promotion of recycling for raw materials and energy saving such as suppression of fuel value and electricity tax in the manufacturing process are being promoted.

Particularly, in the case of heating, a water heater such as a hydrothermal apparatus is used. In the past, a polyurethane foam was installed on the outer surface of a heat exchanger to insulate it.

However, there is a problem that power consumption is increased because the air gap increases between the outer surfaces of the heat exchanger when the heat insulating layer with a single structure is formed and another heat insulator coated with the aluminum foil is wound and used.

Accordingly, in the case of a heat exchanger, it is required to develop a technique capable of reducing the power consumption by providing a plurality of heat exchangers having improved adhesion on the outer surface of the heat exchanger.

Prior art related to the present invention includes Korean Patent Laid-Open No. 10-2010-0027938 (published on Mar. 11, 2010), and the prior art discloses a technique for a hot water supply apparatus using a vacuum insulation material.

It is an object of the present invention to provide a method of forming a multi-insulation structure for a heater and a water heater having a multi-insulation structure, which can reduce the air gap at the outer surface of the vacuum insulation material and the heat sink.

In a preferred aspect, the present invention provides a hot water generator comprising: a hot water preparing step of preparing a cylindrical water heater; A vacuum insulating material forming step of forming a plurality of folded parts on the vacuum insulating material and wrapping the vacuum insulating material so as to be in close contact with the outer surface of the heat sink; And installing an outer heat insulating material on the outer surface of the vacuum heat insulating material, wherein the outer heat insulating material is installed on the outer surface of the vacuum heat insulating material.

The vacuum insulator is prepared by preparing the vacuum insulator and forming a plurality of folded portions by forming folding grooves having the same interval on one surface of the vacuum insulator so that the vacuum insulator having the plurality of folded portions is inserted into the heat insulator It is preferable to be closely attached to the outer surface.

It is preferable to calculate the outer diameter of the thermal water heater and set the length of the vacuum thermal insulation material so as to correspond to the outer diameter of the thermal water heater and to set the number of the plurality of the folded portions to be proportional to the outer diameter of the thermal water heater .

It is preferable that each of the folding grooves is formed so as to gradually expand from a bottom having a certain depth and one side of the vacuum insulating material from both sides of the bottom.

It is preferable that the molding protrusions corresponding to the shapes of the respective folding grooves are pressed against the outer surface of the vacuum insulator to press-form the folding grooves.

It is preferable that the pressure molding is performed using any one of a pressure roller on which the molding protrusions are formed or a pressing plate on which the molding protrusions are formed.

In the case of forming the body portion with the heaters having different shapes from each other,

The plurality of folded portions may be formed in the vacuum insulation material so as to correspond to the circumference of the top portion and the circumference of the body portion in the vacuum insulation material installation step.

In the step of installing the outer heat insulating material, it is preferable that a foam is installed to surround the outer circumference of the vacuum insulating material, and the metal is installed to surround the outer circumference of the foam.

According to another aspect of the present invention, there is provided a heat exchanger comprising: a heat sink body including a top portion having a different shape and a body portion; A vacuum insulator formed by forming a plurality of folded portions and coming into close contact with an outer surface of the heat sink; And an outer heat insulating material provided on the outer periphery of the vacuum heat insulating material.

On the one surface of the vacuum insulator, the plurality of folded portions are formed at intervals.

Each of the plurality of folded portions may be formed as a folded groove having a predetermined depth from one surface of the vacuum heat insulating material.

It is preferable that the number of the plurality of folded portions is set to be proportional to the outer diameter of the heat sink.

Each of the folding grooves is preferably formed so as to gradually expand from a bottom having a predetermined depth and from one side of the bottom toward the one side of the vacuum insulation.

Each of the folding grooves may be formed of a groove having a curved surface or a groove having a multiple angle.

The forming of the folding grooves is preferably performed by using any one of a pressure roller having molding protrusions corresponding to the shape of each of the folding grooves or a pressure plate having the molding protrusions on one side thereof.

It is preferable that the vacuum insulation material is independently formed so as to correspond to each of the circumference of the top part and the circumference of the body part, and the plurality of folded parts are independently formed in each of the independently prepared vacuum insulation materials.

The outer heat insulating material may include a foam surrounding the outer periphery of the vacuum insulating material and a metal surrounding the outer periphery of the foam.

The vacuum insulator includes a core, a cover member provided on an outer surface of the core, and a getter installed inside the core.

The getter preferably comprises CaO and a metal.

INDUSTRIAL APPLICABILITY The present invention has the effect of reducing the air gap in the outer surface of the vacuum heat insulator and the heat sink, thereby effectively lowering power consumption.

1 is a perspective view showing a water heater according to the present invention.
2 is a view showing a vacuum insulation material according to the present invention.
3 is a sectional view showing the vacuum insulation material of FIG.
4A is a perspective view showing a process of molding a plurality of folded portions in a vacuum insulation material according to the present invention.
4B is a view showing a process of forming a plurality of folded portions and bending the vacuum heat insulating material in a round shape.
FIG. 5 is a view showing a state in which a vacuum insulator according to the present invention is installed in a heat exchanger. FIG.
6 is a cross-sectional view showing a water heater having a multi-insulation structure according to the present invention.
FIG. 7 is a table comparing the heat insulating performance and electric power of the heat sink according to the number of folding portions formed according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of forming a multi-insulating structure for a heater and a water heater having a multi-insulating structure will be described with reference to the accompanying drawings.

The structure of the heat sink will be described with reference to the method of forming the multi-insulation structure of the present invention.

FIG. 1 is a perspective view showing a water heater according to the present invention, and FIG. 2 is a view showing a vacuum insulation material according to the present invention.

The method for forming a multi-insulation structure for a heater according to the present invention proceeds to the step of preparing the heat sink, the step of installing the vacuum insulation material, and the step of installing the external insulation material.

Steps to prepare for heat treatment

1 shows a hydrothermal reactor according to the present invention.

Referring to FIG. 1, the heat sink 100 prepared in the present invention may include a body 110 and a top 120.

The body part 110 may have a fluid space in which hot water to be heated flows.

A connection region 111 having a plurality of connection ports connected to an external pipe or the like is formed on an outer surface portion of the body 110. In the case of the connection region 111, the installation of the vacuum insulator 200 to be described later is excluded.

The top portion 120 is formed at the upper end of the body portion 110 and is formed as an upward convex circular plate.

That is, the body 110 and the top 120 of the present invention are formed in different shapes and have different outer diameters.

Steps for installing vacuum insulation

After the water heater is prepared as described above, the vacuum insulator 200 is closely attached to the outer surface of the water heater 100.

Figure 2 shows a vacuum insulation according to the invention.

Referring to FIG. 2, the vacuum insulating material 200 is cut into a predetermined area and length.

First, a vacuum insulator 200 is divided into a first vacuum insulator 201 to be installed on the body 110 and a second vacuum insulator 202 to be installed on the top portion 120.

The length L1 of the first vacuum insulator 201 has a length corresponding to the outer diameter D1 of the body 110 and has an area corresponding to the outer surface of the body 110 .

In addition, the area corresponding to the connection area 111 is set in advance, but is not cut in advance in the vacuum insulator 200.

The second vacuum insulator 220 is also prepared by cutting the upper surface of the tower 120 and the length L2 surrounding the outer circumference of the tower 120.

3 is a sectional view showing the vacuum insulation material of FIG.

Referring to FIG. 3, the structure of the vacuum insulator 200 prepared as described above will be described.

The vacuum insulator 200 includes a core material 200a, a sheath material 200b, and a getter 200c.

The core material 200a is formed by laminating 1 to 60 glass fiber boards.

That is, a glass fiber having a diameter of 0.1 to 10 탆 is dispersed in an inorganic binder (water glass), and the produced boards are laminated with 1 to 60 pieces.

Here, after the vacuum insulator 200 is manufactured, the thickness compression ratio of the core material 200a is set to 15 to 40%.

Next, an aluminum foil having a thickness of 7 to 9 占 퐉 is used as the outer cover material 200b.

For example, the outer cover material 200b is obtained by laminating an L-LDPE film of 30 to 50 mu m from the lower layer and an aluminum foil of 7 mu m on the film, and stacking an NY film of 15 to 25 mu m on the aluminum foil And a K-PET film of 12 to 15 탆 is laminated on the NY film.

Then, the respective layers are bonded to each other by using a polyurethane-based resin.

And, the getter uses CaO (quicklime) of 2 to 80 g / EA.

The quicklime is packed in a pouch (wrinkled paper + PP impregnated nonwoven fabric) of high purity calcium powder of 95% or more, and one or two pieces of the quicklime powder are inserted so as to correspond to the size of the vacuum insulating material 200.

Here, the specific surface area of the quicklime is 0.5 to 15 m < 2 > / g.

In addition, SUS is formed in the form of a cap which is exposed on one side, and a quicklime having a specific surface area of 10 m < 2 > / g or more for absorbing moisture is present therein, and a zeolite having a specific surface area of 300 m & .

Further, in order to adsorb air such as oxygen and hydrogen, the metal powder may exist simultaneously with the moisture absorber, or may exist at the same time as the layer existing separately from the separated or mixed layer.

The metal powder is composed of a mixture of Zr, Mn, Ti, V and Fe and an alloy. The composition ratio of the metal powder is 55 to 65% of Zr, 10 to 20% of Mn, 5 to 15 of Ti, 5%, and Fe: 5 to 15%.

FIG. 4A is a perspective view illustrating a process of forming a plurality of folded portions in the vacuum thermal insulator according to the present invention, FIG. 4B is a view showing a process of forming a plurality of folded portions and bending the vacuum thermal insulator in a round shape.

Referring to FIGS. 4A and 4B, a plurality of folded portions 210 are formed on the first and second vacuum heat insulators 201 and 202 as described above.

The plurality of folded portions 210 are press-formed into the folding grooves 211, and a pressurizing roller 500 or a pressure plate (not shown) may be used for the press forming.

In the following description, the pressure roller 500 will be described as a representative example.

The pressure roller 500 is prepared.

At the outer periphery of the pressure roller 500, molding protrusions 510 are protruded and formed at intervals.

The forming protrusions 510 are formed to correspond to the shape of the folding grooves 211 to be formed.

The forming protrusions 510 are spaced apart from each other in the circumferential direction on the outer circumference of the pressure roller 500 and have a length connecting one end of the pressure roller 500 and the other end.

Of course, although not shown in the drawings, the arrangement of the molding protrusions 510 may be variably set so as to correspond to the formation and spacing of the folding grooves 211 to be pressure-molded.

The variable setting method includes a method of replacing the pressure roller 500 itself and a method of replacing a frame portion formed with the molding protrusions 510 on the outer periphery of the pressure roller 500.

In the latter case, the pressure roller 500 may be constituted by a center roller (not shown) having a rotation shaft formed at both ends thereof, and a ring-shaped forming roller (not shown) fitted to the outer periphery of the center roller.

The center roller and the forming roller can be fitted to each other.

Here, molding protrusions are formed on the outer periphery of the forming roller.

Therefore, by folding a plurality of forming rollers formed in different sizes to the center rollers, the folded portions of various sizes can be pressure-molded.

A feeding roller 600 is disposed below the pressing roller 500 and the pressing roller 500 and the feeding roller 600 are rotated by a driving source (not shown).

The prepared vacuum insulator 200 is moved along the forming path formed between the pressing roller 500 and the feeding roller 600 by the rotation of the feeding roller 600.

The vacuum insulator 200 is moved along the molding path so that one surface of the vacuum insulator 200 is pressed by the molding protrusions 510 formed on the outer periphery of the rotating pressure roller 500, Are formed at intervals.

Therefore, as shown in FIG. 4A, a plurality of folded portions 210 are formed on the one surface of the vacuum insulating material 200 by the folding grooves 211, and are sequentially press-formed.

The folding grooves 211 may be formed by a groove having a curved surface or a polygonal groove having a plurality of angles.

The shape of the folding groove 211 is determined by the shape of the molding protrusions 510.

Here, the plurality of folded portions 210 are applied to the first and second vacuum heat insulators 201 and 202 in the same manner.

The number and spacing of the folding portions 211 are preferably set in proportion to the outer diameter D1 of the object 110 and the outer diameter D2 of the top portion 120. [

The first vacuum insulator 201 is attached to the outer surface of the body 110 and the second vacuum insulator 202 is attached to the top portion 120 of the vacuum insulator 200. [ As shown in Fig.

Then, the vacuum insulator 200 is further subjected to a molding process.

In the case of the first vacuum insulator 201, an area corresponding to the connection area 111 formed in the body 110 is removed.

The removing method is cut by a cutting method, and the cutting method uses a cutting blade.

In addition, in the case of the second vacuum insulator 202, the connection area 121, which exposes the upper connectors formed on the upper surface of the tower 120 to the outside, is cut. The cutting method uses a perforation method.

In the case of the second vacuum insulator 202, it is preferable that the second vacuum heat insulator 202 further bends at a circumference of the top portion 120 and can be closely attached to the circumferential surface of the top portion 120.

Thus, preparation of the vacuum heat insulating material 200 provided on the outer surface of the heat sink 100 can be completed.

FIG. 5 is a view showing a state in which a vacuum insulator according to the present invention is installed in a heat exchanger. FIG.

5, one surface of the first vacuum insulator 201 is installed in close contact with the outer surface of the body 110 of the heat generator 100.

At this time, the first vacuum insulator 201 is closely attached to the outer surface of the body 110 except for the connection area 111, and is surrounded by a plurality of folding grooves (not shown) formed on one surface of the first vacuum insulator 201 211 are folded individually.

Accordingly, one surface of the first vacuum insulator 201 is closely adhered to the outer surface of the body 110 while the air gap due to the plurality of folds 210 is significantly reduced.

One side of the second vacuum insulator 202 is also closely attached to the upper surface of the tower 120 and closely attached to the outer periphery of the tower 120.

At this time, the plurality of folded portions 210 press-molded to the second vacuum insulator 202 are also folded as in the first vacuum insulator 201, and one side of the second vacuum insulator 202 is folded to the top portion 120 The air gaps due to the plurality of folded portions 210 are significantly reduced and adhered to each other.

Steps for installing external insulation

6 is a cross-sectional view showing a water heater having a multi-insulation structure according to the present invention.

6, the polyurethane foam 300 is prepared and closely attached to the outer surfaces of the first and second vacuum heat insulators 201 and 202 closely attached to the outer surfaces of the body 110 and the tower 120.

The polyurethane foam 300 may be installed on the outer surfaces of the body 110 and the top 120 before the vacuum insulation 210 is installed.

Next, a stainless steel case 400 formed of a metal is provided on the outer surface of the polyurethane foam 300 installed on the outer surfaces of the first and second vacuum heat insulators 201 and 202.

This completes the production of a hot water tool having a multi-insulating structure according to the present invention.

Next, the results of comparison of the heat insulating performance and the power by the number of the folded portions formed in the vacuum insulating material will be described.

The vacuum insulator 200 in the comparative example and the embodiment is constituted by the sheath material 200b, the core material 200a and the getter 200c, and the getter 200c of the embodiment further comprises metal in the quicklime. The description of the inclusion of the metal is the same as the above example.

The heat sink sizes in the comparative example and the embodiment are equal to each other.

In the comparative example, the number of the folded portions 210 is formed in the vacuum heat insulator 200. In the embodiment, the number of the folded portions 210 is increased by forming the folded portions 210 in the vacuum heat insulator 200.

The initial heat insulation performance (mW / mK) of the vacuum insulator in the comparative examples and the examples is 4.0, which is the same as each other.

The results obtained by comparing the amount of power consumption and the area of air gap formation when the vacuum insulator 200 is applied after the operating conditions of the heat exchanger 100 are made equal to each other under the above conditions will be described.

In the case of the comparative example, 200 BTU (59 kWh) is formed when the vacuum insulator 200 is applied, and 120 BTU (35 kWh) is achieved in the embodiment.

That is, it can be seen that, by increasing the number of the folded portions 210, the embodiment results in a reduction in power consumption close to half of the comparative example.

In addition, the area of the air gap is 57.35 cm 2, and the area of the air gap is 57.65 cm 2, which is 24.66 cm 2.

Therefore, the embodiment can effectively prevent the performance deterioration from occurring due to the increase in the area of the air gap in the comparative example.

Although the present invention has been described with respect to specific embodiments of the method for forming a heat insulating multi-insulating structure and the heat sink having a multi-insulating structure, it is apparent that various modifications may be made without departing from the scope of the present invention .

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: heat exchanger 110: body part
111: thermal region 120:
121: Connection area 200: Vacuum insulation
201: first vacuum insulator 202: second vacuum insulator
210: folded portion 211: folded groove
200a: core material 200b: sheath material
200c: getter 300: polyurethane foam
400: stainless steel case 500: pressure roller
510: forming projection

Claims (17)

Preparing a hot water heater for preparing a cylindrical hot water heater;
A vacuum insulating material forming step of forming a plurality of folded parts on the vacuum insulating material and wrapping the vacuum insulating material so as to be in close contact with the outer surface of the heat sink; And
And installing an outer heat insulating material on the outer surface of the vacuum heat insulating material, wherein the outer heat insulating material is installed on the outer surface of the vacuum heat insulating material.
The method according to claim 1,
In the vacuum insulation material installation step,
The vacuum insulator is prepared,
Wherein a plurality of folded portions are formed on one surface of the vacuum insulation material by forming folding grooves having the same interval,
Wherein the vacuum heat insulating material provided with the plurality of folded portions is closely attached to the outer surface of the heat sink.
3. The method of claim 2,
Calculating an outer diameter of the heat sink,
A length of the vacuum insulator is set so as to correspond to the outer diameter of the heat sink,
Wherein the number of the plurality of folded portions is set to be proportional to the outer diameter of the heat sink.
The method of claim 3,
Wherein each of the folding grooves is formed so as to gradually expand from a bottom having a predetermined depth to one side of the vacuum insulation from both sides of the bottom.
The method of claim 3,
Wherein the forming protrusions corresponding to the shapes of the respective folding grooves are pressed against the outer surface of the vacuum insulating material to press-form the folding grooves.
6. The method of claim 5,
The above-
Wherein one of the pressing protrusions formed on the circumference of the pressing protrusion is formed by using a pressurizing roller on which the forming protrusions are formed or a pressing plate on which the forming protrusions are formed.
3. The method of claim 2,
In the case of forming the body portion with the heaters having different shapes from each other,
In the step of installing the vacuum insulation material,
Wherein the plurality of folded portions are formed in the vacuum insulation material so as to correspond to the circumference of the top portion and the circumference of the body portion.
The method according to claim 1,
Wherein the step of installing the outer heat insulating material comprises:
A foam is installed to surround the outer periphery of the vacuum insulator,
Wherein the metal is installed to surround the outer periphery of the foam.
A heat sink body comprising a top portion having a different shape and a body portion;
A vacuum insulator formed by forming a plurality of folded portions and coming into close contact with an outer surface of the heat sink; And
And an outer heat insulator provided on the outer periphery of the vacuum heat insulator.
10. The method of claim 9,
Wherein a plurality of folded portions are formed on one surface of the vacuum insulation material,
Wherein each of the plurality of folds comprises:
Wherein the vacuum insulator is formed of a folding groove having a predetermined depth from one side of the vacuum insulator.
11. The method of claim 10,
Wherein the number of the plurality of folded portions,
Wherein the heat exchanger is set to be proportional to the outer diameter of the heat exchanger.
12. The method of claim 11,
Wherein each of the folding grooves is formed so as to gradually expand from a bottom having a predetermined depth to one side of the vacuum insulation from both sides of the bottom.
12. The method of claim 11,
Each of the folding grooves
Wherein the groove is formed by a groove having a curved surface or a groove forming a polygonal shape.
12. The method of claim 11,
The forming of the folding-
Wherein the pressing tool is press-formed by using any one of a pressure roller having molding protrusions corresponding to the shape of each of the folding grooves or a pressing plate having the molding protrusions on one surface thereof.
11. The method of claim 10,
Wherein the vacuum insulator comprises:
Independently of the circumference of the top portion and the circumference of the body portion,
Wherein the plurality of folded portions are independently formed in each of the independently prepared vacuum insulation materials.
11. The method of claim 10,
Wherein the outer heat insulating material comprises:
A foam surrounding the outer periphery of the vacuum insulator,
And a metal surrounding the outer periphery of the foam.
11. The method of claim 10,
Wherein the vacuum insulator comprises:
A cover member provided on an outer surface of the core member, and a getter installed inside the core member,
Characterized in that the getter comprises CaO and a metal.

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