KR100441577B1 - Refrigerator - Google Patents

Abstract

An object of this invention is to provide the refrigerator which improved the heat insulation performance.

A refrigerator having a door filled with heat insulating material between an outer plate and an inner plate on a front surface side of a storage compartment, the refrigerator being provided to protrude from the inner surface of the outer plate to the inside of the door and disposed to be offset by any one of sidewalls of the door. And a protruding member, a passage provided on the side opposite to the side wall of one of the doors of the protruding member and facing the side wall, and an injection point of the heat insulator disposed in communication with the passage.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

In recent refrigerators, there is a structure in which a door is attached to a refrigerator compartment door in order to increase added value. The refrigerator with a small door does not need to open and close a large door when dispensing small foods in the refrigerator. The refrigerator can take out the first stored food by opening and closing the small door.

In the case where the small door is disposed in the large door, urethane foaming is unnecessary only at the size of the small door inside the large door and as much as the space volume of the heat insulation thickness of the large door. In order to make the urethane foam unnecessary parts, a rectangular frame member projecting from the door outer plate side to the heat insulating material side inward of the door in advance in the pre-foaming assembly step of the door member is attached to the inside of the door, and then filled with urethane foam. It is possible to form a foam insulation door member of the large door.

In such a foam insulation door member, it is a condition that a component for an additional function, that is, the frame member is built in the door insulation material side. According to the shape of these frame members, the member having additional functions protrudes from the heat insulating material of the door member, and the urethane stock solution from the injection port is impeded by the protruding parts during urethane foaming of the door member. There was a problem in that a filling space with a large resistance was formed, and a poor filling of urethane and voids occurred, resulting in unevenness of the door surface and deterioration of thermal insulation performance.

In order to prevent this, it is considered to inject a large amount of heat insulator, but the amount of the heat insulator becomes more than necessary, and the manufacturing cost and weight increase.

An object of the present invention is to provide a refrigerator with improved heat insulating performance.

The object is a refrigerator having a door filled with a heat insulating material between an outer plate and an inner plate on a front surface side of a storage compartment, wherein the refrigerator is provided to protrude from the inner surface of the outer plate to the inner side of the door, thereby to prevent any of the side walls of the door. A refrigerator having a protruding member disposed in a single direction, a passage provided on the side opposite to the side wall of one of the doors of the protruding member, the passage facing the side wall and an injection point of the heat insulating material disposed in communication with the passage; Is achieved by.

Further, the passage is constituted by the protruding member and a plate provided inside the door of the outer plate in accordance with the protruding member, and the plate is provided by an inclined portion inclined toward the side which is the one side wall.

Further, a stepped portion provided between the protruding member and the one side wall and having a step between the inner surface of the door outer plate, and a means for inducing the heat insulating material between the surface of the step portion and the inner surface of the door outer plate. It is achieved by having.

A refrigerator having a door filled with a first heat insulating material between an outer plate and an inner plate on a front surface side of a storage compartment, wherein the refrigerator is provided to protrude from the inner surface of the outer plate to the inside of the door so as to prevent any of the side walls of the door. A position between the protruding members arranged one by one, the injection point of the first heat insulating material provided on the side opposite to one side wall of the door of the protruding member, and the protruding member of the inner plate and the one side wall; It is achieved by the refrigerator provided with the bulging part provided so that it may expand inward of the said storage chamber, and the 2nd heat insulating material arrange | positioned inside this door of this bulging part.

By doing in this way, the heat insulating material injected from the injection point can flow along the left and right wall surface of the said guide member and the protrusion member wall. The heat insulating material can be uniformly introduced into the door member. In addition, the insulation may be smoothly introduced into the space portion having a large resistance of the inflow path of the insulation.

1 is a front view of a refrigerator of a door member with a door showing an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of the main portion of A-A of Fig. 1;

Fig. 3 is a perspective view of main parts of the door member, seen from the back of the door plate before urethane foaming;

Figure 4 is a plan view showing a state in which the urethane stock solution flows in the door member.

Fig. 5 is a sectional view of the essential portion of B-B in Fig. 3;

Fig. 6 is a cross sectional view of the main portion C-C in Fig. 4;

<Explanation of symbols for the main parts of the drawings>

1: door member

2: front door plate

2a: upper endpiece

2b: lower end piece

3: frame

3a, 3b, 3c, 3d: protruding wall

4: guide member

4a: slope

5: filling space

5a: entrance

6: induction member

7: door inner plate

8: inner plate member

9: lower door member

10: small door

11: refrigerator body

12: inside the refrigerator

13: compressor

14: machine room

15: cooler

16: blower

17: operation panel

Embodiments of the present invention will now be described with reference to Figs.

Figure 1 is a front view of the refrigerator of the present embodiment, Figure 2 is a longitudinal cross-sectional view of the AA main part of Figure 1, the reference numeral 1 is a door member rotatably open and closed by a hinge on the front of the refrigerator main body, this door member 1 is a main door It is provided with the 1st door which becomes a 2nd door (door) 10 mounted in the predetermined distance from the peripheral part. Like the door member 1, this small door 10 can also be opened and closed rotatably by a hinge on the door member side. In this embodiment, the small door 10 which is a 2nd door is arrange | positioned in the substantially center part of the left-right direction, matching the lower end part with the main door 1. As shown in FIG. In the part of the main door 1 above this small door 10, the operation panel 17 provided with the button for adjusting the operation | movement of this refrigerator, the display which shows a driving condition, etc. is provided.

In addition, the refrigerator main body 11 is a heat insulation box which filled urethane foam between an outer box and an inner box, and the machine room 14 which accommodated the compressor 13 etc. in the lower part of the refrigerator main body is provided. In addition, a cooler 15 constituting a refrigeration cycle, and a blower 16 are provided above and below the inside of the refrigerator 12 of the refrigerator main body 11, and the low-temperature air in the cooler 15 is blower ( 16) cools the inside of the refrigerator 12 via the duct in the refrigerator, and the heat-exchanged air forms a cold air circulation which returns to the intake port below the cooler again.

Fig. 3 shows a perspective view of the main part of the door member 1 viewed from the back of the door member of the pre- urethane foam assembled door. Fig. 4 is a plan view of Fig. 3 seen from the back of the door member, showing a state in which the urethane stock solution flows through the filling space in the door member 1 from the injection point; FIG. 5 is a sectional view taken along the line B-B of FIG. 3, and FIG. 6 is a sectional view taken along the line C-C at FIG. In addition, the arrow in a figure shows the flow of a urethane stock solution.

Next, the structure of these door member 1 is demonstrated one by one according to drawings. First, in Figs. 3 and 4, reference numeral 1 denotes a door member, and reference numeral 2 denotes a front door plate made of a thin metal plate, and has a sudden rising wall on both sides, and the sudden rising wall is bent toward the rear surface side. In addition, the upper end piece 2a and the lower end piece 2b made of resin are assembled at the upper and lower ends of the door member 1 in the longitudinal direction. Accordingly, the side wall of the door member 1 is formed as a rising wall on the left and right walls of the front door plate 2 and four sides of the upper and lower end pieces 2a and 2b.

In addition, the frame member 3 formed inside the front door plate 2 is formed of a molded article made of resin, and the door member 1 is positioned in the width direction at the lower end piece 2b side of the front door plate 2. It is located in the substantially center position, and is a protrusion member which protrudes from the front door board 2 side to the heat insulating material side. And the guide member 4 which protrudes to the heat insulating material side at the other wall side (upper end piece 2a side) of this frame member 3 is provided. In addition, one end of the protruding frame member 3 is close to the lower end piece 2b side, and the rising wall of the protruding wall surface 3b and the lower end piece 2b of one end of the frame member 3 is provided. The filling space 5 is provided in between, and the inlets 5a and 5b through which the urethane stock solution flows are opened at the left and right inlet ends of the filling space, respectively. The frame member 3, which is a protruding member, is provided with a lower end piece 2b on the inner surface of the door outer plate. Here, the small door 10 is attached to the inner space of the frame member 3 at the time of door assembly after urethane foaming.

Next, the peripheral structure of the guide member 4 formed in the other end of the frame member 3 will be described. On the filling space 5 side, the protruding wall surface 3a of the frame member 3 is proximate and protruded. The injection point Y in which the urethane raw liquid is injected into the door member 1 is provided at a position approximately in the center of the width direction of the other wall of the frame member 3, and the other of the frame member 3 is located close to the injection point Y. The projecting member 4 having a dimension substantially equal to the width of the protruding wall surface 3a of the frame member 3 protruding to a position facing the wall (the end piece 2a side) so as to protrude from the front door plate to the heat insulating material side. I install it. In other words, the injection point Y is in a positional relationship between the protruding wall surface 3a of the protruding frame member 3 and the guide member 4. The guide member 4 has a width dimension and a height dimension of the projecting wall surface 3a of the frame member 3 that are approximately equal in size, and are formed to be substantially parallel to the projecting wall surface 3a of the frame member 3. At the same time, it is resin molded integrally with the frame member 3. In addition, both ends of the guide member 4 are inclined in the direction of the frame member 3. Moreover, the front door plate 2 side of the guide member 4 is provided with the operation panel 17 and the board | substrate accommodating part which accommodates the board | substrate for these operations, respectively, at the time of the door assembly after urethane foaming.

In addition, the arrangement | positioning structure of this guide member 4 and the protruding wall surface 3a of the frame member 3 is demonstrated in FIG. 5, The distance L1 from the injection point Y to the wall surface of the guide member 4, and injection | pouring It is formed at a distance substantially equal to the distance L2 from the point Y to the protruding wall surface 3a of the frame member 3. The guide member 4 is made to be substantially parallel to the protruding wall surface 3a of the frame member 3. The reason for this arrangement is so that the injected urethane stock solution can be equally filled between the guide member 4 and the protruding wall surface 3a.

The reason why the urethane injection point is arranged in a positional relationship between the guide member and the other wall of the protruding member is to allow the injected urethane stock solution to uniformly enter the filling space into the door member.

First, as shown in the figure, a frame member 3 protruding from the heat insulating material is provided near one side (lower end piece 2b side) in the front door member 1, and the protruding wall surface 3b of the protruding frame member is provided. In the configuration in which the filling space 5 is formed between the rising wall (lower end piece 2b) of the door member 1 and the guide member 4 of the present invention, first, the injection point Y When the flow paths in the filling space 5 of the door member 1 are compared, the portion of the filling space 5 on one side where the frame member 3 is formed is filled by the presence of the frame member 3. The flow resistance of the urethane stock solution to the space 5 increases, so that the amount of urethane stock solution flowing to the filling space 5 to the other side (upper end piece 2a side) without the resistor of the frame member 3 is large. On the contrary, the flow rate to one side (lower end piece 2b side) is less In other words, when the filling space 5 is based on the injection point Y, the flow path resistance becomes a very large filling space, therefore, the amount of the urethane stock solution in the filling space portion 5 becomes small, so that the resistance is reduced. Poor filling of the urethane foam or voids in a large portion occurs.

In order to achieve such a uniform flow of the urethane stock solution and uniform distribution of the filling amount of the urethane foam in the door member, in the present invention, the position of the urethane injection point Y is adjusted to the protruding wall surface 3a of the frame member 3. It is comprised by the positional relationship which clamped by the guide member 4 which has a width substantially equal to this protrusion wall surface 3a.

In such a configuration, the injected urethane stock solution is first divided into a urethane stock solution equally between the guide member 4 and the wall surface of the protruding wall surface 3a. Then, both ends of the guide member 4 are inclined in the direction of the frame member 3 in order to flow the urethane stock solution into the filling space 5 of the above-mentioned large resistance portion, and the inclined portion 4a is in contact with the inclined portion 4a. The urethane stock solution can flow through the space on both sides of the frame member 3 to the front filling space 5. In Fig. 5, a slight gap (2 to 3 mm) is secured between the protruding tip of the guide member 4 and the door inner plate, so as not to contact the door inner plate when the door member is foamed. Therefore, the urethane stock solution hardly flows in the large space toward the upper end piece 2a side between the tip end of the guide member 4 and the door inner plate. The guide member 4 is a passage for inducing urethane between the frame members 3, and since the protruding frame member is disposed of the urethane injected into the passage, the width and the area of the flow path in the door through which the urethane can flow Drain it toward the smaller part. In the present embodiment, the width and the area of the flow path between the protruding wall surfaces 3b, 3c, and 3d of the frame member and the door side wall are smaller than those of the flow path (space) on the protruding wall surface 3a side. The wall surface 3b side has a level | step difference and is small in width and area. In these areas, the flow resistance of urethane increases, and in this embodiment, urethane flows in these areas.

The flow at the time of urethane foam foam of the door member structure mentioned above is demonstrated in FIG. First, the urethane stock solution coming in from the injection point Y flows approximately uniformly along the left and right wall surfaces of the protruding wall surface 3a and the guide member 4, and then a part of the urethane stock solution is large on the upper end piece 2a side of the guide member 4. It flows into the filling space and part flows along the protruding wall surfaces 3c and 3d of the frame member 3, respectively, to be filled.

Here, the urethane stock solution which flowed to the inclined part 4a of the both ends of the said guide member 4 flows to the both space parts of the said frame member 3 along this inclined surface direction. In addition, a part from the inclined portion 4a of the guide member flows in both side walls of the front door plate 2 toward the lower end piece 2b side of the door member 1 and the filling space 5.

Next, the urethane stock solution toward the filling space 5 of the large resistance portion by the guide member 4 first reaches the inlet portion 5a of the filling space of the large resistance portion. Thereafter, the urethane foam is uniformly mixed with the urethane stock solution introduced from the inlet portion 5a of the left and right filling spaces.

Here, in the inlet part 5a of the former filling space, the front door plate 2 and the frame member 3 have a step, and the step member 6 is formed with a styrol resin. This is to prevent deterioration of the flow of the urethane stock solution into the filling space 5a. Therefore, the urethane stock solution which flowed into this inlet part 5a can flow to the filling space 5 along the inclined surface of this induction member 6.

In addition, when the structure of this filling space 5 is demonstrated in FIG. 6, the front door board side of the said inlet part 5a has a step part in the joint part of both ends of a frame member and a door plate, and guide | induces that a cross section becomes substantially triangular at this step | step. The member 6 is attached. This induction member 6 is for smoothly flowing the urethane solution into the front filling space 5 along the inclined surface of the induction member 6 when the urethane solution has flowed into the inlet 5a. In addition, the induction member 6 is made of a foamed molded article, and is attached to the rear surface side of the front door plate 2 with a material such as polystyrene through an adhesive or the like.

In Fig. 5, there is a narrow space made of a door inner plate on the door inner plate side adjacent to the filling space 5, and the inner plate member 8 for improving the flow of the urethane stock solution to the door inner plate side in advance in this space. Is installed in a narrow space of the door inner plate over approximately the entire width. The door inner plate space portion is formed over the entire circumference of the door inner plate along the four side rising wall of the door member, and forms a wall for storing the stored food inside the door in the refrigerator.

The reason why the inner plate member 8 is provided here is that the narrow space of the door inner plate constitutes a filling space continuously connected to the filling space 5, so that the filling space volume in which the narrow space is added is Naturally, although the size increases, in consideration of the filling ability of the entire urethane foam in the door member 1, the filling space having a large portion of this resistance is as much as possible the space of the cube, and the fluid space of the urethane stock solution is ensured as a good shape space. This is because it is preferable. By doing in this way, urethane filling property to a filling space can be ensured.

If the inner plate member 8 is not placed in a narrow space of the door inner plate, the urethane flow path resistance may be increased because the tip portion of the space has an elongated shape having a substantially trapezoidal shape. As the resistance increases, the flow of the urethane stock solution decreases, causing a poor filling of the urethane foam into the filling space 5. In order to prevent such a filling failure, an inner plate member having a substantially trapezoidal cross section made of polystyrene foam molding is made in advance to the elongated shape of the door inner plate so that the filling space 5 can be smoothly filled. have.

Next, in the foaming procedure of the door member, the door members shown in Figs. 4 and 5 (with the door inner plate facing upward) are placed horizontally and placed on the mold. And the urethane stock solution is inject | poured from the urethane injection point Y in the state in which there is no door inner plate 7.

After the injection, the door inner plate 7 is covered on the back of the door member, and the inner plate foam jig is covered with the door member on the door inner plate 7 together.

After that, as described with reference to Fig. 4, the urethane stock solution flows into the filling space in the door member, and the urethane foam is filled to every corner to complete the foam insulation door member. In the filling space 5 of the large resistance part in the door member after foaming completed in this way, the guide member 4 is comprised by the positional relationship which clamped the urethane injection point position in the protrusion wall surface 3a, and said Since both ends of the guide member have a shape inclined in the direction of the protruding member, the unfilled urethane foam in the foam insulation door member 1 can be eliminated.

According to the above embodiment, the foam door member is an injection point of urethane foam filling the door member with the door member space position created by the other wall of the protruding member and the suddenly rising wall of the door member away from the portion with high resistance. A guide member for introducing the urethane stock solution injected from the point position into the portion having the high resistance is provided between the rising wall and the other wall of the protruding member, and the injection point is positioned between the guide member wall and the other wall of the protruding member. Since it installed so that it may make it possible, the urethane stock solution to a door member can be filled uniformly.

In addition, the urethane injection point is formed in a positional relationship such that the guide member is sandwiched by another wall of the protruding member, and is formed integrally with the protruding member, and further inclined both ends of the guide member in the direction of the protruding member. Since the injected urethane stock solution can flow between the wall surface of the guide member and the protruding member. And the urethane which touched the said inclination part can flow uniformly into the filling space to the part with large resistance along this inclination part wall surface, and can prevent the unfilling of a urethane foam.

In addition, an induction member for introducing a urethane solution into the filling space portion is provided at the inlet portion of the filling space portion having the large resistance portion, and the filling space of the portion having the large resistance portion. Since the bank of the inner plate of the door close to the part is filled with a heat insulating material such as styrofoam in advance, the urethane stock solution can be smoothly introduced into the filling space with a large resistance of the urethane inflow path.

In addition, the guide member facing the other wall of the protruding member is configured so that the width direction and the height direction of the other wall of the protruding member are approximately equal in size and are substantially parallel to the other wall surface, thereby adding parts of the guide member. Instead, the urethane stock solution can be introduced in accordance with the flow path resistance to the filling space into the door member, and the unit assembly cost of the door member can be suppressed.

In the above embodiment, the frame which is a protruding member is provided in close proximity to the lower end piece of the door, but in the case of being biased toward the other side wall or the end piece side, the above-described effect can be achieved.

As mentioned above, according to this invention, the refrigerator which improved the heat insulation performance can be provided.

Claims (4)

A refrigerator having a door filled with a heat insulating material between an outer plate and an inner plate on a front side of a storage compartment, A protruding member which protrudes from the inner surface of the door to the inside of the door and is arranged to be offset by any one of the side walls of the door, and is provided on the side opposite to one side wall of the door of the protruding member And a passage facing the side, and an injection point of the heat insulating material disposed in communication with the passage. The said passage is comprised by the said protruding member and the board provided in the door inside of the said outer board according to this protruding member, Comprising: The said board is provided with the inclination part inclined toward the side which is said one side wall. Refrigerator. The stepped portion according to claim 1 or 2, wherein a stepped portion is provided between the protruding member and the one side wall and has a step between the inner surface of the door outer plate, a surface of the stepped portion, and an inner surface of the door outer plate. And a means for guiding said heat insulating material between. A refrigerator having a door filled with a first insulating material between an outer plate and an inner plate on a front side of a storage compartment, A protruding member provided to protrude from the inner surface of the door to the inside of the door and offset from one of the side walls of the door, and the first heat insulating member disposed on a side opposite to the side wall of one of the doors of the protruding member. And a bulging portion provided to expand into the storage compartment at a position between the injection point of the inner plate and the one side wall of the inner plate, and a second heat insulating material disposed inside the door of the bulging portion. Featured refrigerator.