KR20010097292A - Door for refrigerator and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a refrigerator door and a method of manufacturing the same. A door for a refrigerator according to the present invention includes: a door outer plate having an opening formed through a plate surface; A door inner plate spaced apart from each other at a filling interval between the door outer plate and a predetermined filler; A monitor casing coupled between the door outer plate and the door inner plate such that the monitor accommodation portion is exposed to the outside through the opening with the monitor accommodation portion recessed on one side; A vacuum insulation member having a vacuum insulation layer formed therein and interposed between the monitor casing and the door inner plate to suppress heat transfer between the monitor casing and the door inner plate; It is characterized in that it comprises a filling molding portion that is filled between the door outer plate and the door inner plate. As a result, not only the production is easy and the space can be utilized efficiently, but also the dew condensation of the monitor area can be suppressed.

Description

Refrigerator door and its manufacturing method {DOOR FOR REFRIGERATOR AND MANUFACTURING METHOD THEREOF}

The present invention relates to a refrigerator door and a method of manufacturing the same, and more particularly, a refrigerator door and a product which can be easily manufactured and efficiently utilize space and can suppress dew condensation of a monitor area. It relates to a manufacturing method.

The refrigerator has a main body in which at least one cooling chamber is formed so as to keep food stored, and a door coupled to the main body to open and close an opening of the cooling chamber. An air flow path is formed in the rear region of the cooling chamber so that air can be circulated, and an evaporator and a blower fan for promoting the flow of air are respectively disposed in the air flow path to cool the air. The rear side of the main body is provided with a compressor to compress the refrigerant circulated from the evaporator and provide it to the evaporator again.

On the other hand, the front of the door is provided with a display unit for displaying the cooling state and / or operating conditions of the cooling chamber to the outside, and recently a refrigerator equipped with LCD monitor (LCD Monitor) has been released.

1 is a view showing a state of use of a conventional refrigerator door, Figure 2 is a partially enlarged cross-sectional view of the refrigerator door of Figure 1 along the line II-II. As shown in these figures, the refrigerator is hinged to the main body 111 to open and close the front and rear openings of the freezer compartment and the refrigerating compartment, respectively, the freezer compartment and the refrigerating compartment are formed inside the left and right directions, respectively. It has a freezing chamber door 113 and the refrigerating chamber door 115. The front of the freezer door 113 is provided with a dispenser 117 to provide ice or cold water, and the LCD monitor 127 is provided at the front of the refrigerator door 115 to display predetermined information. have.

Meanwhile, the refrigerating chamber door 115 may include a door outer plate 121 forming an outer appearance, a door inner plate 123 spaced apart from each other at a filling interval of a predetermined filler between the door outer plate 121, and a door outer plate ( Between the 121 and the door inner plate 123 is configured to include a filling molding portion 125 that is filled by a filler such as polyurethane. An opening 122 is formed in the central region of the door outer plate 121 to penetrate the plate surface, and a monitor casing 129 is coupled to the opening 122 to accommodate the LCD monitor 127. One side of the monitor casing 129 is formed with a monitor accommodating portion 131 recessed to accommodate the LCD monitor 129.

In the method of manufacturing the refrigerator compartment door 115, the monitor casing 131 is coupled to the monitor receiving unit 131 so as to be exposed to the outside through an opening 122 formed in the door outer plate 121. The rear surface of the door outer plate 121 to which the monitor casing 129 is coupled to the jig is disposed to face upward. Next, a predetermined filler (or foam material), that is, a filler mainly composed of polyurethane is injected into the filling space formed on the rear surface of the door outer plate 121. When the injection of the filler is completed, the door inner plate 123 is coupled to the rear of the door outer plate 121 to block the filling space.

By the way, in the conventional refrigerator door and its manufacturing method, the thickness of the filling molding portion 125 formed behind the monitor casing 129 is formed relatively thin compared to the thickness of the peripheral area, the LCD monitor 127 Because of the relatively high calorific value, the so-called dew condensation phenomenon occurs when moisture in the air condenses.

In consideration of this problem, some have adopted a method of forming a protrusion 133a protruding toward the refrigerating chamber side along the thickness direction in the monitor casing 129 region of the door inner plate 123, as shown in FIG. In this case, the manufacturing process of the door inner plate 123 is added, making it difficult to manufacture the door inner plate 123 and reducing the high contents of the refrigerating chamber, and there is a problem in that a lot of inconveniences occur.

In consideration of this problem, as shown in FIG. 3B, a protrusion 133b having a reduced protrusion length is formed in the door inner plate 123, and between the monitor casing 129 and the protrusion 133b, The method of interposing the vacuum insulation member 135, which is known to be 3 to 4 times superior to the urethane foam layer, is used.

By the way, as shown in Figure 3b, in the method of interposing the vacuum insulating member 135 between the monitor casing 129 and the protrusion 133b of the door inner plate 123, the monitor casing 129 and the vacuum insulating member. Since the space between the 135 and the foam material is filled, the gap between the door inner plate 123 and the vacuum insulation member 135 is not sufficient, which hinders the flowability of the foam material and thus unfilled sections and / or bubbles may be generated. There is a problem that concerns are large.

Accordingly, an object of the present invention is to provide a refrigerator door and a method of manufacturing the same, which are easy to manufacture and can effectively utilize space, and can suppress dew condensation of the monitor area.

1 is a view showing a state of use of a conventional refrigerator door,

2 is a partially enlarged cross-sectional view taken along line II-II of the refrigerator door of FIG. 1;

3A and 3B are views corresponding to FIG. 2 of the conventional refrigerator door,

4 is a view showing a state of use of the door for a refrigerator according to the present invention,

5 is a partially enlarged cross-sectional view taken along the line VV of the refrigerator door of FIG. 4;

6A to 6C are views for explaining a method of manufacturing a door for a refrigerator according to the present invention, respectively.

Explanation of symbols on the main parts of the drawings

11: body 15: refrigerator door

17 LCD monitor 21: Outer door

23: inner door door 25: monitor casing

27: vacuum insulation member 29: filling molding part

31a: Monitor accommodation part 31b: Insulation member accommodation part

32: adhesive member

The object is, according to the present invention, the door outer plate is formed through the plate surface and the opening; A door inner plate spaced apart from each other at a filling interval between the door outer plate and a predetermined filler; A monitor casing coupled between the door outer plate and the door inner plate such that the monitor accommodation portion is exposed to the outside through the opening with the monitor accommodation portion recessed on one side; A vacuum insulation member having a vacuum insulation layer formed therein and interposed between the monitor casing and the door inner plate to suppress heat transfer between the monitor casing and the door inner plate; It is achieved by a door for a refrigerator, characterized in that it comprises a filling molding that is filled between the door outer plate and the door inner plate.

Here, the monitor casing is preferably formed with a heat insulating member accommodating portion so that at least one region of the vacuum insulating member can be accommodated.

In addition, the heat insulating member accommodating part may have a reduced width compared to the vacuum heat insulating member so that at least one region of the filling molding part is formed in contact with the vacuum heat insulating member.

On the other hand, according to another field of the present invention, an opening is formed through the plate surface and forms a predetermined filling space at the rear, the door inner plate disposed to block the filling space behind the door outer plate, A monitor casing coupled between the door outer plate and the door inner plate such that the monitor accommodating part is exposed to the outside through the opening and having a monitor accommodating portion formed at one side thereof, and a vacuum insulation layer is formed therein; Providing a vacuum insulation member interposed between the plates to suppress heat transfer between the monitor casing and the door inner plate; Coupling the door outer plate and the monitor casing to position the monitor receiving portion in the opening area; Disposing the vacuum insulating member behind the monitor casing; Filling a filler behind the door shell; A method of manufacturing a door for a refrigerator is provided, comprising the step of coupling the door inner plate behind the door outer plate.

The preparing of the monitor casing may further include forming a heat insulating member accommodating part in which at least one region of the vacuum insulating member is seated on the opposite side of the monitor accommodating part.

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

4 is a view showing a state of use of the refrigerator door according to the present invention, Figure 5 is a partially enlarged cross-sectional view along the line V-V of the refrigerator door of Figure 4; As shown in these drawings, the freezer door 13 and the refrigerating chamber door 15 are hinged to the front surface of the main body 11 in which the freezer compartment and the refrigerating chamber (not shown) are rotated to open and close the freezer compartment and the refrigerating chamber, respectively. have. An LCD monitor 17 is coupled to the front surface of the refrigerating chamber door 15 to output predetermined information.

The refrigerating chamber door 15 is spaced apart from each other with a filling interval of a predetermined filler between the door outer plate 21 having an opening 22 formed therethrough and the door outer plate 21 forming an exterior. Interposed between the door inner plate 23 and the monitor casing 25 accommodated in the opening of the door outer plate 21 to accommodate the LCD monitor 17, and between the monitor casing 25 and the door inner plate 23. Filling molding part formed after the filling by the filling of the vacuum insulating member 27 to suppress heat transfer between the monitor casing 25 and the door inner plate 23 and the door outer plate 21 and the door inner plate 23 ( 29) is configured to include.

On the other hand, one side surface of the monitor casing 25 is formed with a monitor receiving portion 31a recessed along the thickness direction to accommodate the LCD monitor 17, the outer surface of the door housing plate on the peripheral surface of the monitor receiving portion (31a) An accommodating groove 31c which is recessed from the circumferential surface and extends in the circumferential direction is formed to be coupled to accommodate the edge of the opening 22 formed in the 21 to prevent the monitor casing 25 from being separated. On the opposite side of the monitor receiving portion 31a of the monitor casing 25, a heat insulating member accommodating portion 31b is formed so that the vacuum insulating member 27 can be seated therein.

Insulating member accommodating portion 31b is a contact surface of the monitor casing 25 and the vacuum insulating member 27 to prevent the flow of the vacuum insulating member 27 in the longitudinal direction of the door outer plate 21 during the filling of the filler. It is formed to protrude along the thickness direction of the vacuum insulation member 27 from the. The protruding length of the heat insulating member accommodating part 31b preferably has a width smaller than that of the vacuum insulating member 27 so that the filling molding part 29 may be formed in contact with the vacuum insulating member 27.

The vacuum insulation member 27 is formed to have a thickness corresponding to the distance between the monitor casing 25 and the door inner plate 23, and a plurality of vacuum cells 28 communicated with each other are formed therein. .

6A to 6C are views for explaining a method of manufacturing a door for a refrigerator according to the present invention, respectively. The refrigerating chamber door 15 having the above-described structural features is such that the edge of the opening 22 formed in the door outer plate 21 is accommodated in the accommodation groove 31c of the monitor casing 25. The monitor casing 25 is coupled to the inside, and as illustrated in FIG. 6A, the filling space S formed in the door outer plate 21 is disposed upward in a foam jig (not shown). The vacuum insulating member 27 is coupled to the heat insulating member accommodating portion 31b of the monitor casing 25, and an adhesive member 32 such as a double-sided tape is attached to the door inner plate 23 side of the vacuum insulating member 27. do. Here, the adhesive material may be applied to the surface of the vacuum insulation member 27.

Next, as shown in FIG. 6B, the foam liquid is injected into the filling space S formed behind the door outer plate 21 by the foam liquid injector 33. At this time, sufficient care is required so that the foaming liquid does not come into contact with the vacuum insulating member 27, and the foaming liquid is injected into both regions with the vacuum insulating member 27 interposed in the longitudinal direction of the door outer plate 21. do. That is, a predetermined amount of foam is first injected into one side of the vacuum insulation member 27, and the foam liquid injector 33 is moved to the opposite side in a state in which the foamed liquid does not flow out, and then a predetermined amount of foam is injected again. do.

When the injection of the foam is completed, as shown in Figure 6c, the door inner plate 23 is coupled to the upper side of the door outer plate 21 so that the filling space (S) of the door outer plate 21 is blocked. In this case, the vacuum insulation member 27 and the door inner plate 23 are coupled to each other by using the adhesive member 32 coupled to the vacuum insulation member 27.

On the other hand, the vacuum insulation member 27, one region is accommodated in the heat insulating member accommodating portion 31b to prevent the flow due to the pressure during foaming, the filling molding portion in the area protruding from the heat insulating member accommodating portion 31b. The contact 29 is formed to suppress heat transfer between the monitor casing 25 and the door inner plate 23 at the correct position.

As described above, according to the present invention, unlike the prior art in which the protrusions protruding toward the refrigerating chamber for the insulation thickness compensation on the door inner plate, it is not necessary to form the protrusions can simplify the manufacturing process of the door inner plate, By improving the performance, a refrigerator door and a method of manufacturing the same, which can suppress dew condensation in a monitor area, are provided.

In addition, the refrigerator door according to the present invention can effectively utilize the space of the refrigerating compartment by removing the protrusions on the inner plate of the door can enhance the user's convenience.

Claims (5)

A door outer plate having an opening formed through the plate surface; A door inner plate spaced apart from each other at a filling interval between the door outer plate and a predetermined filler; A monitor casing coupled between the door outer plate and the door inner plate such that the monitor accommodation portion is exposed to the outside through the opening with the monitor accommodation portion recessed on one side; A vacuum insulation member having a vacuum insulation layer formed therein and interposed between the monitor casing and the door inner plate to suppress heat transfer between the monitor casing and the door inner plate; A refrigerator door comprising a filling molding part filled between the door outer plate and the door inner plate. The method of claim 1, The monitor casing is a refrigerator door, characterized in that the heat insulating member accommodating portion is formed so that at least one region of the vacuum insulation member can be seated. The method of claim 2, The heat insulating member accommodating part has a width smaller than that of the vacuum insulating member so that at least one region of the filling molding part is formed in contact with the vacuum insulating member. The monitor has an opening formed through the plate surface and forms a predetermined filling space at the rear, a door inner plate disposed to block the filling space at the rear of the door outer plate, and a monitor accommodating portion recessed at one side. A monitor casing coupled between the door outer plate and the door inner plate so that an accommodating portion is exposed to the outside through the opening, and a vacuum insulation layer is formed therein, the monitor casing being interposed between the monitor casing and the door inner plate. Respectively providing a vacuum insulating member for suppressing heat transfer between inner plates; Coupling the door outer plate and the monitor casing to position the monitor receiving portion in the opening area; Disposing the vacuum insulating member behind the monitor casing; Filling a filler behind the door shell; And manufacturing the door inner plate behind the door outer plate. The method of claim 4, wherein The preparing of the monitor casing may further include forming a heat insulation member accommodating part in which at least one region of the vacuum insulation member is seated on an opposite side of the monitor accommodating part.