JP2006105405A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator for suppressing heat conduction from a dew proofing pipe even when using a soft magnet gasket. <P>SOLUTION: The gasket 30 formed of a soft resin has a magnet holding portion 31 storing a magnet to be attractively attached to a front flange portion 2a, a mounting portion 32 for a door 13, and a bagged portion 33 for flexibly connecting the magnet holding portion 31 to the mounting portion 32. At the lower part on the reverse of the door 13, a supporting portion 19 is provided for holding the gasket 30 at its bottom. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator in which a door gasket portion for preventing heat leakage from the opening periphery of a cabinet is improved in sealing configuration.

  Conventionally, the magnet gasket 110 that is attached to the back surface of the refrigerator door and that cools and seals against the peripheral edge of the front opening of the cabinet when the door is closed is formed of a soft synthetic resin material. A magnet holding part 112 containing a magnet to be attracted to the front flange part 100, a mounting part 113 fitted in a gasket holding groove 121 formed on the peripheral edge of the back surface of the door 120, the magnet holding part 112 and the mounting part 113 It has a cross section composed of a thin-walled bag-like portion 114 that connects the two in a stretchable manner, and is configured in a square shape (for example, Patent Document 1).

  When the gasket 110 is attached to the inner periphery of the door 120, the bag-like portion 114 expands and contracts with the opening and closing of the door 120 with respect to the attachment portion 113 and the magnet holding portion 112 attracted to the front flange portion 100. The sealed state of the door 120 surface with respect to the front opening of the refrigerator body is maintained.

  The front flange portion 100 is covered with a gasket 110 when the door is closed, but a part of the front flange portion 100 is exposed to the outside of the warehouse, and cooling of the storage chamber 130 prevents the front flange portion 100 made of a thin steel plate from being cooled and causing condensation. Therefore, a high-temperature refrigerant pipe 101 (hereinafter referred to as a dew-proof pipe) that is a part of the condenser in the refrigeration cycle is disposed on the back side of the front flange portion 100 with which the gasket 110 abuts.

Then, the temperature of the front flange portion 100 heated by the heat conduction from the dew proof pipe 101 causes a harmful effect that the temperature in the storage chamber 130 rises. Therefore, the heat conduction from the heated front flange portion 100 In order to suppress this, the arrangement position of the dew-proof pipe 101 is separated from the inside of the warehouse, or the contact position between the magnet holding part 112 and the front flange part 100 is arranged upward.
JP 2002-22351 A

  However, in recent years, the width of the door has also become longer due to the increase in the size of the refrigerator body accompanying the expansion of the storage capacity, and the gasket 110 needs to ensure stretchability and is soft, so when the door is opened In particular, the weight of the gasket 110 causes a phenomenon that the central portion of the upper side or the bottom side hangs down.

  In this case, if the gasket 110 is on the upper side, the area of the front flange portion 100 exposed to the inside of the cabinet is reduced even if the door is closed in a hanging state, so that heat conduction due to heating of the dew-proof pipe 101 is suppressed. However, as shown by the dotted line, when the bottom gasket 110 is hung down and the door is closed, the area of the front flange portion 100 exposed to the inside of the warehouse increases. Due to heat conduction, the temperature in the storage chamber 130 was likely to rise.

  The present invention has been made in consideration of the above points, and an object of the present invention is to provide a refrigerator that suppresses heat conduction from a dew-proof pipe even when a soft magnet gasket is used.

  The refrigerator of the present invention includes a cabinet filled with a heat insulating material between an outer box and an inner box, a dew-proof pipe that abuts against a front flange portion of the cabinet to prevent the formation of condensation, and a front opening of the cabinet. A door that can be freely opened and closed, and a rectangular gasket attached to the inner peripheral edge of the back surface of the door. The gasket is formed of a soft resin and contains a magnet that is attracted to the front flange portion. A magnet holding portion; a door-side mounting portion; and a bag-like portion that connects the magnet holding portion and the mounting portion in a telescopic manner, and holds the bottom of the gasket at a lower portion of the back surface of the door. A support portion is provided.

  According to the above invention, since the bottom of the gasket is held by the support portion, it can be prevented from sagging due to the weight of the gasket, thereby reducing the area exposed to the inside of the heated front flange portion. It is possible to suppress the temperature rise in the storage.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The refrigerator main body 1 shown in FIG. 2 forms a storage space inside by a cabinet 2 filled with a heat insulating material 5 between an outer box 3 and an inner box 4, and includes a refrigerator compartment 7, a vegetable compartment 8, and specifications. A switching chamber 9 and a freezing chamber 10 are provided in order from the top. Although not particularly shown, an ice making chamber is provided on the side of the specification switching chamber 9.

  A partition wall 21 is provided between the refrigerator compartment 7 and the vegetable compartment 8, and a heat insulating partition wall 22 is provided between the other storage compartments, thereby forming a plurality of independent spaces in the cabinet. Cooling control is performed to a predetermined temperature range suitable for the storage temperature of food such as the refrigerator compartment 7, the vegetable compartment 8, the freezer compartment 10, and the like.

  Opening doors such as a refrigerator compartment door 11, a vegetable compartment door 12, a specification switching compartment door 13 and a freezer compartment door 14 are provided at the front opening of each storage compartment, and in each door, the refrigerator compartment door 11 is The hinges attached to the top and bottom of one side of the front opening are pivotally supported by pivoting one side of the hinge, but the vegetable compartment 14 and other storage compartment doors are formed in a drawer type.

  Since the gasket 30 and its peripheral structure, which will be described later, are basically the same, the insulating partition wall 22 and the specification switching chamber door 13 provided between the specification switching chamber 9 and the freezing chamber 10 are taken up, and the configuration is illustrated. 1 will be described in more detail.

  A synthetic resin frame 24 having an E-shaped cross section is attached to the front portion of the heat insulating partition wall 22, and a part of the front flange portion 2 a of the cabinet 2 is formed in the front opening thereof. A front plate 27 made of a thin steel plate is provided. On the back side of the front plate 27, as a heating source for preventing the front flange portion 2a, a part of which is exposed to the outside of the warehouse, from being cooled and condensed by cooling in the storage chamber, the condenser in the refrigeration cycle A part of the dew-proof pipe 26 is disposed, and is in contact with the back surface of the front plate 27 by the elastic force of the heat insulating material 25 made of polystyrene foam provided behind the pipe.

  The door 13 is configured by filling a heat insulating material 17 between the outer plate 15 and the inner plate 16, and a synthetic resin door cap 18 is attached to the upper and lower openings. On the four peripheral edges of the door inner plate 16 are provided gaskets 30 that are fitted into undercut molded gasket holding grooves 16a, and the front flange portion 2a formed on the peripheral edge of the front opening edge of the cabinet 2 and the rear surface of the door 13. The gap with the side periphery is hermetically sealed to thermally shut off the storage chamber 9 and the outside to prevent heat leakage, and each storage chamber is controlled and held at a predetermined temperature.

  The gasket 30 has a cross-sectional shape including a magnet holding portion 31, an attachment portion 32 on the door inner plate 16 side, and a thin bag-like portion 33 that connects these in a stretchable manner, and the back surface of the door is made of soft synthetic resin. It is formed in a square shape along the periphery.

  A soft magnet 34 formed by mixing soft rubber and magnetic powder is inserted and disposed in the magnet holding portion 31, and this adsorbs to the front plate 27, that is, the front flange portion 2a to seal the inside and outside of the refrigerator in an airtight manner. The heat is shut off. The attachment portion 32 has an anchor shape protruding downward from the thick base portion, and holds the gasket 30 in place by fitting into the gasket holding concave groove 16a.

  The bag-shaped portion 33 is formed by connecting the magnet holding portion 31 and the attachment portion 32 with a thin material having a thickness of 0.3 to 0.4 mm from both sides, and formed into a bag shape. The gasket 30 can be expanded and contracted in the horizontal direction in FIG. 1 which is the opening / closing direction of the door 13, absorbs the adsorption force of the magnet holding portion 31 when the door is opened, relaxes the opening force, and the front flange of the magnet when the door is opened It has a buffering effect of the allowance to the part 2a and the closing force.

  Now, when the door is closed, since the magnet holding portion 31 is attracted to the front flange portion 2a, the gasket 30 does not hang down due to its weight. However, when the door is opened, the gasket 30 is not attracted to the inner side. Therefore, the gaskets 30 on the upper side and the lower side hang down. This phenomenon occurs due to deterioration or breakage of the soft synthetic resin, and particularly appears when the width of the door 13 is large. In this case, when the door is closed while hanging down on the bottom side, the area of the front flange portion 2a exposed to the inside of the warehouse is enlarged, and the temperature of the inside of the storage chamber 9 is increased by heating of the dewproof pipe 26.

  Therefore, in the present invention, the support portion 19 that holds the bottom side of the gasket 30 is provided in the lower portion of the back surface of the door 13. Specifically, the support portion 19 is formed integrally with the lower door cap 18 and is extended toward the inner side so as to support the bag-like portion 33 of the gasket 30 and the lower surface of the magnet holding portion 31. .

  For this reason, even when the gasket 30 passes downward due to its weight when the door is opened, the support portion 19 supports the gasket 30. Therefore, the gasket 30 can be prevented from drooping, and the exposed area of the front flange portion 2a can be increased. It is prevented and the rise in the internal temperature can be suppressed.

  In the present embodiment, the support portion 19 is protruded from the door cap 18 in accordance with the width dimension of the gasket 30. However, since the drooping particularly appears in the central portion in the width direction of the door 13, In addition, by providing the support portion 19 over a predetermined range, for example, 20 mm, it is possible to reliably prevent drooping and improve the attachment property of the gasket 30.

  On the other hand, the front flange portion 2a is further provided by disposing the support portion 19 so that the position where the magnet holding portion 31 and the front flange portion 2a are in contact with the inner side of the storage position of the dew-proof pipe 26. The rise in the internal temperature due to the exposure of can be suppressed.

  The configuration described above is an embodiment of the present invention, and various modifications can be made without departing from the scope of the invention. For example, although only the support part 19 provided in the specification switching chamber door 13 has been described, the same configuration may be applied to other storage chamber doors. In addition, you may provide the support part 19 so that the gasket 30 of an upper side or a side may also be supported. Further, although the support portion 19 is integrally formed with the door cap 18, it may be attached and fixed as a separate part, or may be integrally formed with or attached to the outer plate 15 and the inner plate 16. Furthermore, the dewproof pipe 26 is not limited to the refrigerant pipe, and may be changed to a heating wire heater or the like.

  Applicable to various refrigerators using dew-proof pipes and magnet gaskets.

It is a longitudinal cross-sectional view which shows the support part which is one Embodiment of this invention. It is a longitudinal cross-sectional view of the refrigerator which shows one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the conventional gasket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body 2 ... Cabinet 2a ... Front flange part 9 ... Specification switching chamber 13 ... Door 15 ... Outer plate 16 ... Door inner plate 16a ... Gasket recessed groove 17 ... Heat insulating material 18 ... Door cap 19 ... Support part 22 ... Heat insulation Partition wall 26 ... dew prevention pipe 27 ... front plate 30 ... gasket 31 ... magnet holding part 32 ... mounting part 33 ... bag-like part

Claims (2)

  A cabinet filled with heat insulating material between the outer box and the inner box, a dew-proof pipe disposed on the front flange contact surface of this cabinet to prevent condensation, and the front opening of the cabinet can be opened and closed freely And a gasket having a square shape attached to the inner peripheral edge of the back surface of the door, and the gasket is formed of a soft resin and has a magnet holding portion that houses a magnet that is attracted to the front flange portion. And an attachment portion to the door side, and a bag-like portion for connecting the magnet holding portion and the attachment portion in a telescopic manner, and a support portion for holding the bottom side of the gasket is provided at the lower part of the rear surface of the door. A refrigerator characterized by that.   The refrigerator according to claim 1, wherein the support portion is provided over a predetermined range at a substantially central portion in the width direction of the door.

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