KR0163300B1 - Adiabatic panel of refrigerator and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a refrigerator insulation wall and a method of manufacturing the same, the object of which is to reduce the manufacturing time and cost of the insulation wall. The refrigerator insulation wall according to the present invention is provided with a vacuum insulating material 40 between the outer plate 12 and the inner wound 11 and the outer plate 12 and the inner wound 11, the urethane foam is provided in the remaining space. Will be. The vacuum insulating material 40 is provided with a heat-sealed polyethylene film 40 is integrally provided to be automatically coupled to the trauma recessed plate 12 by heat applied from the outside during the manufacturing process. Since the refrigerator insulation wall is made automatically, such a refrigerator has an advantage of reducing its manufacturing time and manufacturing cost.

Description

Insulation wall of refrigerator and its manufacturing method

Figure 1 (a) is a partial cross-sectional view showing the wall of the refrigerator provided with a conventional vacuum insulating material.

(b) is a partial cross-sectional view of a conventional vacuum insulator.

Figure 2 (a) is a partial cross-sectional view showing a heat insulating wall of the refrigerator according to the present invention.

(b) is a partial cross-sectional view of the vacuum insulator according to the present invention.

3 is a vacuum insulating material coupling process according to the present invention.

4 is a step of manufacturing a refrigerator wall according to the present invention.

* Explanation of symbols for main parts of the drawings

10: refrigerator wall 11: inner box

12: trauma plate 13: fixture

14: vacuum insulation material 24: heat fusion film

30: jig 31: heater

The present invention relates to a heat insulating wall of a refrigerator and a method of manufacturing the same, and more particularly, to a vacuum heat insulating wall of a refrigerator having improved shape and a manufacturing method of a heat insulating wall provided with a vacuum insulating material.

In general, the use of a vacuum insulator for the refrigerator wall has an advantage that the inner capacity of the refrigerator can be increased because the insulation performance is about three times better than that of the urethane foam used for the conventional general refrigerator wall.

For this reason, a vacuum insulator is used in the refrigerator wall. The refrigerator wall in which the conventional vacuum insulation material is provided has a plurality of fixtures on the outer plate 12 of the refrigerator as shown in FIGS. 1A and 1B. 13) is provided in combination, the double-sided tape 20 is attached to the upper surface of the fastener (13).

The vacuum insulating material 14 is seated and adhered to the double-coated tape 20 to which the vacuum insulating material 14 is placed, and the vacuum insulating material 14 has a heat insulating film disposed therebetween with a filling material 14a made of urethane foam or inorganic oxide therebetween. It is prepared by laminating, that is, laminated molding. The insulation film is first deposited with PE (polyethylene) 14b, EVOH (ethylene vinyl alcohol) 14c or PVOH (polyethylene vinyl alcohol) from the inside out, and then PET / AL (aluminum foil deposited poly) at the outermost side. Ester) 14d film is provided by combining layers in turn.

When the vacuum insulator 14 configured as described above is attached, the refrigerator outer plate 12 is bent in a bending line, and the refrigerator inner box 11 is coupled. After the refrigerator inner box 11 is combined, a heat insulating material such as urethane foam is foamed in the remaining space 15 to fill the remaining space 15 between the trauma plate 12 and the inner box 11.

Meanwhile, the refrigerator heat insulating wall 10 to which the conventional vacuum heat insulating material 14 is coupled requires a separate fastener 13 and a double-sided tape 20 to be combined with the vacuum heat insulating material 14. And the bonding operation between the refrigerator outer plate 12, the fixture 13 and the vacuum insulating material 14 is required. Since the bonding operation is made by hand, the manufacturing takes a long time, there is a problem that the manufacturing cost is also raised.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and an object of the present invention is to simplify the structure of a refrigerator wall in which a vacuum insulation material is provided by applying a heat-sealing film to a vacuum insulation material coupled to a refrigerator outer plate, and thus, a method of manufacturing a heat insulation wall. It aims to reduce the manufacturing cost of the refrigerator wall and the working time for the manufacture by automation.

In order to achieve the above object, the present invention is a refrigerator insulation wall provided with a vacuum insulation material between the outer plate and the inner wound, the outer plate and the inner wound, wherein one surface of the vacuum insulation is provided with a heat-sealing member to the heat applied from the outside The vacuum insulation is attached directly to the adhesive surface of the outer phase.

In order to achieve the above object, the method of manufacturing a heat insulation wall of the present invention includes a method of manufacturing a heat insulation wall of a refrigerator in which a vacuum insulation material is embedded between a trauma plate and an inner phase, wherein the vacuum insulation material has a heat-sealed film attached to one surface thereof. A step of attaching the heat-sealed vacuum insulation material provided with a heat-sealed vacuum heat insulating material, the heat-sealed vacuum heat insulator, wherein the heat-sealed vacuum heat insulator is placed on the trauma plate. The inner phase bonding step of the inner phase is coupled to the trauma plate banded through the heat-sealing step, the heat-sealed vacuum heat insulating material is heat-sealed to the outer plate, the heat-sealed vacuum heat insulating material is heated through the step. Characterized in that it consists of a heat insulating material foaming step of the heat insulating material is foamed between the trauma plate and the internal wound through the internal phase bonding step.

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

As shown in (a) and (b) of FIG. 2, the wall of the refrigerator according to the present invention includes a trauma plate 12 constituting the outer surface of the refrigerator, and a refrigerator internal wound made of a plastic material bonded to the trauma plate 12. 11) the shape is achieved.

The inside of the vacuum insulation material 40 is heat-sealed and coupled to the outer plate 12 by heat applied from the outside, and the vacuum insulation material 40 is coupled to the refrigerator outer plate 12 by heat-sealing. The heat-sealing film 24 is integrally provided on the vacuum insulating film on the attaching surface of the vacuum insulating material 40 so that the vacuum insulating film 40 can be provided. And the urethane foam is foamed in the remaining space 22 of the outer plate 12 and the inner box 11 to fill the empty space.

Hereinafter, a method of manufacturing such a refrigerator wall will be described step by step with reference to FIGS. 2, 3, and 4.

Thermal Fusion Film Attachment Step (S1): The vacuum insulation material 40 is provided with a filler 14a made of an inorganic oxide in the middle thereof, and the vacuum insulation film is attached to the top and bottom of the filler 14a. This vacuum insulation film is in turn from inside to outside PE (polyethylene) 14b, EVOH (ethylene vinyl alcohol) 14c or PVOH (polyethylene vinyl alcohol) and then PET / AL (aluminum foil deposited polyester film 14d). This layer is formed.

Then, the PE (polyethylene) 24 within 80-100μ which can be heat-sealed to the bonding surface of the vacuum insulator 40 with the refrigerator outer plate 12 is laminated, and the vacuum insulator 14 is heated. It is a step to be provided with a fusion-melt heat-sealed vacuum insulating material (40).

Vacuum heat insulating material seating step (S2): the heat-sealed vacuum heat insulating material (40) attached to the heat-sealed film 24 and the refrigerator outer plate (12) at the same time separate conveyor line, that is, heat-sealed vacuum heat insulating material (40) supply line ( 41 and the trauma bending line 42, the respective conveyor line (41, 42) is paused when the appropriate position is detected by the sensor 43 installed in each line (41, 42) .

At the same time, the heat-sealed vacuum heat insulating material 40 provided in the heat-sealed vacuum heat insulating material 40 supply line 41 is provided to the trauma plate 12 bending line 42 by the jig 30 provided in the refrigerator wall manufacturing line 50. The step of being seated in the adhesive portion of the refrigerator outer case plate (12).

Thermal fusion step (S3): When the heat-sealed vacuum insulating material 40 is seated on the refrigerator outer plate 12, the heater 31 is integrally provided in the outer plate 12 bending line 42 is operated, When the heat of about 140 degrees to 150 degrees Celsius generated by the heater 31 heats the trauma plate 12 for a predetermined time, the adhesive surface of the heat-sealed film 24 is melted by this heat and the trauma plate 12 ) Will be fused.

As a result, the heat-sealed vacuum insulating material 40 is bonded to the refrigerator outer plate 12 by heat-sealing.

Inner phase bonding step (S4): After the heat-sealed vacuum insulating material 40 is fused to the outer plate 12, the outer plate 12 is bent to form three sides of the refrigerator, this banded refrigerator outer plate 12 The inside of the refrigerator 11 is a step in which the refrigerator inner box 11 is coupled to form a shape of the refrigerator wall 20 with an appropriate empty space therebetween.

Insulation material foaming step (S5): The empty space is left inside the refrigerator combined with the refrigerator outer plate 12 and the inner box 11 is a step of foaming a porous insulation such as urethane foam of the inorganic oxide.

In this manner, the refrigerator insulation wall 20 provided with the vacuum insulation 40 according to the present invention is manufactured.

Meanwhile, the filler and the vacuum insulation film may be separately provided to be temporarily bonded to the refrigerator outer plate, and the coupling relationship will be described step by step.

① The heat-sealing vacuum insulation film seating step: outer plate (12) of the refrigerator outer plate (12) provided in the bending line PE (polyethylene) (14b), EVOH (ethylene vinyl alcohol) (14c), PET / AL (aluminum) Thin-deposited polyester) 14d, and a heat-sealing film (PE) film (24), which is a heat-sealing film, are sequentially stacked and integrally provided with a heat-sealed vacuum insulating film, which is seated on the heat-insulated portion of the refrigerator outer plate 12. Step.

② Filling step: It is a step in which a plurality of porous fillers 14a, such as urethane, are placed on the heat-sealed vacuum insulating film in a refrigerator outer plate 12 on which the heat-sealed vacuum insulating film is placed, with a predetermined separation distance therebetween. .

③ vacuum insulation film seating step: After filling the packing material 14a in the refrigerator outer plate 12, PE (polyethylene) (14b), EVOH (ethylene vinyl alcohol) (14c). This is a step in which a vacuum insulating film provided by stacking a PET / AL (aluminum foil deposited polyester) film 14d and a PE (polyethylene) 24 film in turn is placed on the packing 14a.

④ Attachment step: When the heat-sealed vacuum insulation film, the filling material 14a and the vacuum insulation film are seated in turn on the refrigerator outer plate 12, the press is operated to be pressed on it, and at the same time to the outer line plate 12 bending line The provided heater is a step of applying the heat of about 140-150 degrees Celsius to the vacuum insulation film, the filling material (14a) and the heat-sealed vacuum insulation film is temporarily bonded to the refrigerator outer plate (12).

Subsequent manufacturing steps are composed of an inner phase bonding step and a heat insulating material foaming step, and the manufacturing method thereof is the same as the conventional method.

Such a refrigerator insulation wall and its manufacturing method have the advantage of simplifying the shape of the insulation wall and automating the manufacturing process, thereby reducing the manufacturing cost and manufacturing time to a minimum.

Claims (6)

In the refrigerator insulation wall provided with a vacuum insulating material 14 between the outer plate 12 and the inner wound 11, the outer plate 12 and the inner wound 11, heat is formed on one surface of the vacuum heat insulating member 14. Refrigerator heat insulation wall, characterized in that the vacuum insulation material 14 is attached to the outer shell 12 by fusion of the heat sealing member to the adhesive surface of the outer shell 12 by the heat applied from the outside fusion member 24 is provided. . The heat insulating member of claim 1, wherein the heat sealing member is formed of a polyethylene film having a thickness within 80-100 µ. In the method for manufacturing a refrigerator insulation wall including a vacuum insulation material 14 between the outer plate 12 and the inner phase 11, the vacuum insulation material 14 is attached to the heat-sealed film 24 on one surface thereof. The heat fusion film insulation step (S1) provided with a fusion-vacuum heat insulating material 40, the heat-sealed vacuum heat insulating material 40, the heat-sealed vacuum heat insulating material 40 passed through the heat-sealed film attaching step is seated on the outer plate 12 Step (S2), the heat-sealing plate 12 is heat-sealed after the heat-sealing vacuum insulating material seating step is heat-sealed step (S3) that the heat-sealed vacuum heat insulating material 40 is heat-sealed to the outer plate 12 The inner wound coupling step (S4) in which the inner wound 11 is coupled to the outer wound plate 12 which is bent through the heat fusion step (S4), and the outer wound plate 12 and the inner wound 11 which have undergone the inner wound bonding step Refrigerator insulation wall, characterized in that consisting of the insulation foaming step (S5) that the insulation is foamed in between Method. The method according to claim 3, wherein the heat fusion film (24) in the step of attaching the heat fusion film (S1) is made of polyethylene film and laminated on the vacuum insulation material (14). 4. The trauma plate 12, which is supplied through the bending line 42 of the refrigerator wall 10 in the heat-sealing vacuum insulation seating step S2, is provided at one side of the bending line 42. When the sensing line 43 is detected by the bending line 42 is temporarily suspended, the heat-sealed vacuum insulation material 40 is seated by a jig 30 provided in the refrigerator wall manufacturing line 50. Refrigerator insulation wall manufacturing method. According to claim 3, In the heat fusion step (S3) is provided with a heater 31 which is provided integrally with the bending line 42 below the trauma plate 12, by the heater (31) The heat-sealed vacuum insulating material 40 is a heat-sealed refrigerator manufacturing method, characterized in that the heat-sealed to the outer plate (12).