JP2005207689A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of achieving effective heat shielding performance by mounting a gasket and a packing between a door inner plate at an inside side and an inner casing to form a plurality of sealing spaces, and surely bringing fins of the seal packing into contact with an opposite face and separated therefrom without resistance in opening and closing the door. <P>SOLUTION: This refrigerator comprises the gasket 11 made out of a soft resin, and mounted on an outer periphery of a door inside 12 in a state of forming a suction part 11a to an opening part peripheral edge 2a of a refrigerator main body 1, and the seal packing 15 positioned at the inside 8 side with respect to the gasket and provided with soft fins 15b, 15c extended to the inner case 4 side forming a chill room with a mounting part 15a to a door side 12. Tips of the fins of the seal packing are brought into contact with inner casing faces 4b, 4d from the oblique direction in closing the door. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator having an improved seal configuration of a door gasket portion that prevents heat leakage from the periphery of the opening of the refrigerator.

  In recent years, in refrigerators, in order to reduce power consumption, various technical measures have been studied not only for cooling control but also for cabinet insulation structures, and cabinet openings that occupy a large proportion of heat leakage from storage rooms. As for the gap between the door and the door, not only a conventional heat insulating seal with a gasket but also a magnet gasket (as shown in FIG. 3) provided on the front flange of the door (50) and the outer box (42) 51) and a separate seal packing (48a) formed between the outer surface of the bead (52c) forming the storage pocket inside the door inner plate (52) and the inner surface of the inner box (44) ( 55) is used, and a so-called double seal system is employed to block heat leakage due to air flow inside and outside the cabinet (see, for example, Patent Document 1).

The seal packing (55) has a mounting portion (55a) attached to the wall surface of the inner box (44) spaced from the gasket (51), and a soft fin (55b) is extended to the throat (48a) side. When the door is closed, the bead (52c) of the door inner plate that forms the throat (48a) enters the cabinet, so that the surface of the bead (52c) that has entered the fin (55b) ) And the inside and outside of the cabinet are shut off, and when the door is closed, heat leakage inside and outside the cabinet is prevented by a double blocking wall together with the gasket (51).
Japanese Patent Laid-Open No. 10-259983 (FIGS. 9 to 14)

  However, the seal packing (55) in the conventional double seal system including the above-mentioned Patent Document 1 contacts and deforms and seals the inner plate bead (52c) of the door (50) that is put in and out by a rotary type or a drawer type. In addition, since the contact length extends over the entire width of the bead (52c), there is a large resistance when the door (50) enters and contacts, and the door (50) does not completely close. .

  In particular, in the case of the structure shown in the figure, since the direction of the fin (55b) of the seal packing extends to the inside of the warehouse, the resistance at the time of opening the door is further increased, and the burden of opening the door is increased. In addition, when the resistance at the time of contact is large as described above, a rubbing sound is generated each time the door is opened and closed, which causes discomfort to the user.

  The width of the throat (48a) varies depending on the position of the door (50) attached to the main body and the position of the inner box (44) when forming the heat insulation box. Depending on the variation, the door (50) In some cases, the tip of the fin (55b) does not come into contact with the opposing surface due to the parallel movement.

  The present invention has been made in consideration of the above points, and has an effective heat insulation performance by forming a plurality of seal spaces between the inside and outside of the box by arranging packing between the gasket and the door inner plate inside the box and the inner box. In addition, an object of the present invention is to provide a refrigerator in which fins of the seal packing at the time of an open / close door can reliably come into contact with and separate from the opposing surface without resistance.

  In order to solve the above problems, the refrigerator of the present invention is formed of a soft resin, provided with a suction portion to the periphery of the opening of the refrigerator main body, and disposed on the inner periphery of the door, and positioned closer to the inner side than the gasket. And a seal packing provided with a soft fin extending toward the inner box forming the storage chamber together with the attachment portion on the door side, and when the door is closed, the tip of the fin of the seal packing is the inner box surface It arrange | positions so that it may contact | abut with respect to the diagonal direction.

  According to the refrigerator of the present invention, it is possible to effectively cut off heat inside and outside the cabinet by forming a plurality of seal spaces, thereby preventing heat leakage and reducing power consumption. To obtain a seal configuration that can reliably contact without causing poor contact, and that can be contacted and separated without resistance even when contacting the opposite surface, so that incomplete door closing and rubbing noise do not occur. Can do.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The refrigerator main body (1) which shows the schematic longitudinal cross-sectional view in FIG. 1 forms the storage space in the inside by the inner box (4) provided through the outer box (2) and the heat insulation layer (3), By dividing the front opening of the storage space by several insulated partitions (5), a plurality of independent spaces are formed in the storage, each of which is a refrigerator compartment (6), a vegetable compartment (7), a freezer Cooling control is performed to a predetermined temperature range suitable for the storage temperature of food such as the chamber (8).

  Opening doors such as a refrigerator door (9) and a freezer door (10) are provided at the opening of each storage room, and in each door, the refrigerator door (9) is one side of the front opening. The hinges attached to the upper and lower sides of the hinge are pivotally supported by pivoting one side thereof, but the freezer compartment (8) and other storage compartment doors are formed in a drawer type.

  A magnet gasket (11) is attached to the periphery of the back surface of each door. As an example, as shown in FIG. 2, which is an enlarged longitudinal sectional view of the lower part of the freezer compartment (8) immediately before the door is closed, the gasket (11) is formed of the outer box (2) that forms the outer shape of the main body (1). The gap between the flange (2a) formed at the periphery of the front opening and the periphery of the back of the freezer compartment door (10) is hermetically sealed to heat the outside of the freezer compartment (8) formed by the inner box (4) and the outside. In combination with the heat insulating material (3) filled between the inner and outer boxes on the wall surface of the main body, heat leakage is prevented, and the inside of the freezer compartment (8) is controlled and held at a predetermined freezing temperature.

  The structure of the magnet gasket (11) is basically the same in any of the above-described storage chamber doors. The magnet (11a) is made of a long string-like soft body having a rectangular cross section formed by mixing soft rubber and magnetic powder. ) Has a cross-sectional shape composed of a magnet holding portion (11b) inserted and held, a mounting portion (11c) to the door inner plate (12) side, and a thin bag-like portion (11d) for connecting these in a stretchable manner. A frame formed along the back edge of the door (10) by extruding into a long string of soft synthetic resin, cutting it at an inclination angle of 45 degrees, butting the end faces together and heat-welding It is formed in a shape.

  The attachment portion (11c) has a wedge-shaped anchor shape protruding downward from the thick base, and is fitted into an attachment groove (12a) formed by undercutting on the four peripheral edges of the door inner plate (12). By doing so, the gasket (11) is held so as not to come out. The bag-like portion (11d) is formed in a bag shape by connecting the magnet holding portion (11b) and the attachment portion (11c) from each side with a thin material having a thickness of 0.3 to 0.4 mm. The gasket-like part (11d) allows the gasket (11) to expand and contract in the left-right direction in FIG. 2, which is the opening and closing direction of the door (10), and absorbs the attractive force of the magnet holding part (11b) when the door is opened. The door opening force is alleviated, and the magnet (11a) has a jumping allowance to the outer box flange (2a) and a buffering action of the door closing force when the door is closed.

  And in the bag-like part (11c) connected to the inner side of the magnet holding part (11b), the inner box collar part (4a) connected to the collar part (2a) of the outer box forming the front opening of the main body (1). The soft fin (11e) is extended toward the arc-shaped portion (4b) to be formed. When the door is closed, the soft fin (11e) is formed on the convex curved surface of the arc-shaped portion (4b) together with the magnet holding portion (11b). On the other hand, it is formed so as to come into contact with the diagonal direction.

  The magnet gasket (11) formed in this way has the magnet holding part (11b) of the flange part (2a) in which the front opening of the outer casing (2) made of a thin steel plate is formed by the magnetic force of the magnet (11a). By adsorbing to the surface, the space between the freezer compartment (8) and the outside of the refrigerator is hermetically sealed and the heat is shut off. The gasket mounting portion (11c) is not limited to the configuration in which the gasket is fitted into the mounting groove (12a) of the door inner plate as described above, and may be an adhesive or screw fixing method. A structure in which a gasket made of resin is integrally formed may be used.

  Thus, the packing (15) is attached to the door inner plate (12) on the inner side of the magnet gasket (11) with a predetermined distance from the gasket. The packing (15) includes a fixed portion (15a) made of a hard material that fits into a locking protrusion (12b) formed integrally with the door inner plate (12), and the gasket (11) side of the fixed portion (15a) The first seal fin (15b) that extends perpendicularly from the end of the gasket to the opposite side and abuts against the curved surface of the arc-shaped portion (4b) of the inner casing collar (4a) inside the chamber from the soft fin (11e) of the gasket , And similarly extending from the end on the inner side of the fixed portion (15a) to the opposing surface and descending substantially downward, and forming a stepped portion (4c) on the inner side of the inner box (4) A second seal fin (15c) is in contact with the arcuate surface (4d).

  The first and second seal fins (15b) (15c) are made of a soft body formed integrally with the hard portion (15a), and the first freezing chamber door (10) is closed when the first door is closed. The seal fin (15b) has a tip extending portion extending perpendicularly to the closing direction obliquely abuts against the arcuate convex surface (4b) of the inner box collar (4a), and the second seal fin (15c) A tip extending portion extending substantially horizontally with respect to the closing direction and descending is formed so as to come into contact with the concave surface (4d) of the rising portion of the step (4c) of the inner box from an oblique direction.

  That is, both seal fins (15b) and (15c) contact the opposing surfaces (4b) and (4d) from an oblique direction rather than horizontal or vertical, and the fins relative to the surface are not vertical but inclined. It forms an angle and abuts.

  Further, a bag-like portion (15d) that forms a closed loop is formed from the fixed portion (15a) between the first seal fin (15b) and the second seal fin (15c), Even when the door is closed, it is arranged so as to be close to the inner box surface (4) so as not to contact.

  This is because the space volume between the first and second seal fins (15b) (15c) is divided into small portions by the bag-like portion (15d) so as not to generate air convection in the portion, preventing heat transfer due to convection, This is to increase the heat-blocking effect. Also, when opening and closing the door, the bag-like part (15d) does not come into contact with the horizontal surface of the opposing inner box. It prevents the problem that occurs. Although not shown in particular, the same effect can be obtained by attaching a soft sponge tape to the fixing portion (15a) instead of the bag-like portion (15d).

  The present invention is configured as described above, and without damaging the closing door attracting force by the magnet gasket (11), the heat leakage between the inside of the freezer compartment (8) and the outside of the refrigerator is surely cut off, thereby improving the cooling efficiency and consumption. When the door is closed, the magnet gasket (11) is attracted to the flange (2a) of the outer box and the first and second seal fins (15b) of the packing (15) are closed. ) (15c) abuts the inner box surface (4) on the inner side from the gasket (11), so that the inside of the freezer compartment (8) and the outside of the compartment are the gasket (11), packing (15), Heat is cut off in at least three small spaces in between, and heat leakage inside and outside the cabinet can be suppressed by a good heat insulating effect.

  At the same time, the first seal fin (15b) hangs vertically with respect to the closing direction, but the tip extension portion along with the closing is an oblique angle with respect to the arcuate convex surface (4b) of the inner box collar (4a). Since the tip of the fin (15b) is easily deformed even if there is some dimensional variation, there is no resistance from the point of contact until the door is closed, and a gap is created between the case and the outer box. There is no risk of closing the door.

  In addition, the second seal fin (15c) extends into the interior (8) almost horizontally with respect to the closing direction, but the fins against the concave surface (4d) of the rising portion of the step (4c) of the inner box. The extension part of the tip is inclined downward, and when closing the door shown in the figure, the tip of the fin obliquely contacts the arcuate surface (4d) of the rising base forming the step (4c) of the inner box. When the second seal fin (15c) is also closed and the tip of the fin comes into contact with the inner box surface (4d), the fin is easily deformed without being repelled. Adsorption of the portion (11b) to the outer box collar (2a) is not hindered.

  When the door is opened, the seal fins (15b) and (15c) are in contact with the arcuate convex surface (4b) in the vicinity of the flange portion of the inner box and the raised concave surface (4d) of the step portion diagonally, neither horizontally nor vertically. Therefore, when the freezer compartment door (10) is separated from the outer box collar (2a), the packing (15) does not act as a resistor and smoothly separates from the surface of the inner box (4). Thus, at the beginning of the door opening operation, it is possible to prevent the seal packing from rubbing on the inner box surface and generating a rubbing sound and causing discomfort to the user.

  Further, the soft fin (11e) extended from the gasket (11) has an arcuate convex surface of the inner box collar (4a) adjacent to the outer box collar (2a) to which the magnet holding part (11b) is attracted ( 4b) is in contact with 4b) to form a small space, thereby further improving the heat shielding effect and further reducing the heat transfer of the cooling air in the cabinet to the outer casing (4) made of a thin steel plate, which is a good heat conductor. It is possible to improve the effect of preventing heat leakage.

  At this time, the tip of the soft fin (11e) is in contact with the arcuate convex surface (4b) which is a bent portion to the inner side of the inner box collar (4a), and Since the action at the time of contact and separation is the same as in the case of the seal fins (15b) and (15c), the contact force does not cause resistance when closing the door, or wear due to rubbing with the opposing surface at the opening or Generation of sound can be prevented.

  In addition, in the said Example, the door (9) magnet of a back surface facing the engagement collar part (2a) (4a) of the outer case (2) and inner case (4) in the front opening part of a freezer compartment () Although the gasket configuration has been described, the present invention is not limited to this, and can be applied as a seal configuration for other storage room doors such as the refrigerator compartment (6) and the vegetable compartment (7). Needless to say, the present invention can also be applied to a double seal configuration of a magnet gasket and a packing in the partition wall (5).

  INDUSTRIAL APPLICATION This invention can be utilized for the refrigerator which improved the heat-insulation performance between a main-body opening part and an opening-and-closing door.

It is a longitudinal cross-sectional view which shows the outline of the refrigerator in this invention. It is an expanded sectional view of the door gasket and packing part which show one Embodiment of this invention. It is sectional drawing which shows the conventional door gasket part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 2a Outer box collar part 3 Heat insulation layer 4 Inner box 4a Inner box collar part 4b Arc-shaped convex part 4c Step part 4d Arc-shaped concave part 5 Partition wall 8 Freezer compartment 10 Freezer compartment door
11 Magnet gasket 11a Magnet 11b Magnet holder
11c Mounting part 11d Bag-shaped part 11e Soft fin
12 Door inner plate 12a Mounting groove 12b Locking protrusion
15 Packing 15a Fixing part 15b First seal fin
15c Second seal fin 15d Bag-shaped part

Claims (5)

  A storage chamber together with a gasket that is formed of a soft resin and is provided on the outer periphery of the inside of the door with an adsorbing portion to the periphery of the opening of the refrigerator main body, and a mounting portion that is provided on the inner side of the gasket from the gasket. And a seal packing provided with a soft fin extending toward the inner box side, and when the door is closed, the tip of the fin of the seal packing is disposed so as to contact the inner box surface from an oblique direction. A refrigerator characterized by.   The seal packing is provided with a plurality of fins, and at least the first fin is brought into contact with the rising inclined surface of the inner box forming the step inside the cabinet, and the second fin is bent to form the front flange of the inner box The refrigerator according to claim 1, wherein the refrigerator is in contact with an inclined surface of the portion.   The refrigerator according to claim 1 or 2, wherein the abutting surface is an arc-shaped surface, and the tip of the fin is in contact with the concave surface or the convex surface obliquely.   4. The refrigerator according to claim 2, wherein a bulging portion extending to the facing space surface is formed between the plurality of fins. A fin extending integrally with the gasket is formed, and this fin is brought into contact with the surface of the bent portion forming the front flange of the inner box in the oblique direction from the oblique direction. The refrigerator according to any one of claims 1 to 4.

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