JP2011237117A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of preventing the outside air from entering into the refrigerator through the vicinity of a magnet of a gasket of a door.SOLUTION: The refrigerator includes a refrigerator body 21 and a door. The door includes a gasket 40 which is adsorbed to a peripheral edge 41a of a front side opening 44 of the refrigerator body 21. The gasket 40 includes a fitting part 49 which is fitted to the door, a magnet holding part 48 which holds a magnet 47 inside and is adsorbed to the peripheral edge 41a, and a flexible part 50 which connects the fitting part 49 to the magnet holding part 48 in shrinkable manner. Inside the magnet holding part 48, an air layer part 60 is formed between the magnet 47 and the magnet holding part 48.

Description

  The present invention relates to a refrigerator in which a magnet gasket with a built-in magnet is attached to the periphery on the back side of a door.

  Conventionally, in this type of refrigerator, the magnetic force of the magnet gasket is strengthened with a simple configuration, and the heat conduction performance is improved to improve the cooling capacity and the ability to prevent dew condensation outside the cabinet (for example, Patent Document 1). reference).

  FIG. 6 shows a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in the figure, the refrigerator body forms a storage space inside by the inner box 4 provided via the outer box 2 and the heat insulating layer 3, and the front opening of the storage space is divided by several heat insulating partition walls. A plurality of independent spaces are formed in the cabinet, and the refrigerator compartment 6 and other storage rooms are formed.

  The figure is a cross-sectional view of the main part of the refrigerator compartment door 9, with a magnet gasket 11 attached, and sealing the gap between the flange 2a formed on the periphery of the front opening of the outer box 2 and the periphery on the back side of the door 9. The inside of the refrigerator compartment 6 and the outside are thermally cut off, and heat leakage is prevented together with the heat insulating material 3 filled between the inner and outer boxes on the wall surface of the main body.

  Further, on the back side of the flange 2a of the outer box 2, as a heating source for preventing the flange, a part of which is exposed on the inside 6 side, from being cooled and condensed by cooling in the refrigerator compartment 6, A high-temperature refrigerant pipe 12 that is a part of the condenser constituting the refrigeration cycle is provided.

  The magnet gasket 11 has a cross-sectional shape composed of a magnet holding portion 13 for holding a magnet 17, an attachment portion 15 on the door inner plate 14 side, and a thin bag-like portion 16 that connects these in a stretchable manner, and is a soft synthetic resin. Is extruded into a long string.

  The magnet holding part 13 is not a bag shape, but a magnet gasket 11 that has a substantially U-shaped cross section with the side surface of the main body serving as an adsorbing part open, and adsorbs the outer surface 17a of the magnet directly to the flange part 2a. It has a ditch | groove 17c and it can suppress that the heat | fever outside a warehouse is conducted to the magnet 17 from the collar part 2a of an outer box, and penetrate | invades into the inside 6 side.

JP 2005-188840 A

  The above-described conventional configuration has a magnet for preventing heat outside the box from being transmitted from the flange 2a of the outer box to the magnet 17 made of a magnetic powder material having relatively high thermal conductivity and entering the inside 6 of the box. The outer flat surface 17a which becomes the suction surface of 17 is provided with two concave grooves 17c.

  However, since the magnet 17 is in direct contact with the flange portion 2a without using a soft gasket, the groove 17c of the magnet 17 is cracked while the door is repeatedly opened and closed, or the flange portion 2a is damaged by the groove 17c. May peel off and cause rust. In addition, the magnet 17 has high thermal conductivity, and there is a risk that heat may enter the inside of the cabinet through the inside of the magnet 17.

  The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a refrigerator that reduces the entry of outside air into the cabinet through the magnet of the door gasket.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerator main body, a door, and the door has a gasket that adsorbs to a peripheral edge portion of a front opening of the refrigerator main body, and the gasket is the door. In the refrigerator comprising: a mounting portion to be attached to a magnet; a magnet holding portion that holds a magnet inside and is attracted to the peripheral portion; and a flexible portion that connects the mounting portion and the magnet holding portion in a telescopic manner. An air layer is formed between the magnet and the magnet holding part inside the part.

  As a result, the magnet can be reduced in size while maintaining the magnetic force of the attracting surface portion of the magnet, so that it is possible to reduce the outside heat from entering through the magnet holding portion.

  The refrigerator of this invention can suppress the heat | fever which penetrate | invades from the outside through a gasket, and can reduce the power consumption of a refrigerator.

Front view of the refrigerator in Embodiment 1 of the present invention Sectional drawing of the refrigerator in Embodiment 1 of this invention Sectional drawing of the door gasket part in Embodiment 1 of this invention Sectional drawing of the gasket of embodiment of this invention Sectional drawing of the door gasket part in Embodiment 2 of this invention Expanded sectional view of the conventional door gasket

  1st invention has a refrigerator main body, a door, and the said door has a gasket adsorb | sucked to the peripheral part of the front-surface opening part of the said refrigerator main body, The said gasket attaches to the said door, A magnet is equipped inside. A refrigerator comprising: a magnet holding portion that holds and adsorbs to the peripheral edge portion; and a flexible portion that connects the attachment portion and the magnet holding portion in a telescopic manner. The magnet and the magnet inside the magnet holding portion. By forming an air layer between the holding part and the magnet, the magnet can be miniaturized while maintaining the magnetic force of the attracting surface part of the magnet. Therefore, it is possible to reduce the intrusion of heat outside the storage through the magnet holding part.

  According to a second aspect of the present invention, in the first aspect of the invention, a magnet attracting surface portion attracted to a peripheral portion and a non-adsorbing surface portion serving as a back surface of the attracting surface portion are provided. By forming the layer, it is possible to maintain the magnetic force of the attracting surface portion of the magnet and to reduce the intrusion of heat outside the warehouse.

  According to a third aspect, in the second aspect, by providing a rib between the non-adsorptive surface portion of the magnet and the magnet holding portion, the positioning of the magnet in the magnet holding portion and the formation of the air layer portion are facilitated. The attracting surface portion can be brought into close contact with the surface of the magnet holding portion, so that the magnetic force can be maintained, the magnet can be downsized, and the heat from outside the chamber due to the air layer can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the same reference numerals are given to the same configurations as those of the conventional example or the above-described embodiments, and detailed description thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of the refrigerator according to Embodiment 1 of the present invention.

  In FIG. 1, the refrigerator main body 21 has a refrigerated room 22, an ice making room 23, a switching room 24, a freezing room 25, and a vegetable room 26 in order from the top. An operation unit 27 is disposed in the vicinity of the center of the refrigerator compartment door 22a of the refrigerating chamber 22, and an operation board (not shown) is formed inside the operation part 27. Is provided with an illuminance sensor (not shown) as illuminance detection means. The illuminance sensor 36 can be specifically configured by using an optical sensor having a photodiode or phototransistor as a base element.

  In the figure, the heat insulating box body of the refrigerator main body 21 is foamed in a space between the outer box 41 and the inner box 42, an outer box 41 mainly using a steel plate, an inner box 42 molded of a resin such as ABS. It is comprised with the foaming heat insulating materials 43, such as hard foaming urethane with which it fills, and it heat-insulates with the circumference | surroundings and is heat-insulated into the some storage chamber by the partition wall. A refrigerating room 22 is provided at the top, a switching room 24 or an ice making room 23 is provided side by side at the bottom of the refrigerating room, a freezing room 25 is disposed at the bottom of the switching room 24 and the ice making room 23, and a vegetable room 26 is disposed at the bottom. In addition, a door is formed in the front opening of the refrigerator main body in order to partition outside air from the front of each storage room.

  The refrigerator compartment 22 is normally set to 1 ° C. to 5 ° C. at the lower limit of the temperature at which it does not freeze for refrigerated storage, and the lowermost vegetable compartment 26 is set to 2 ° C. to 7 ° C., which is the same or slightly higher temperature setting as the refrigerator compartment 22. In addition, the freezer compartment 25 is set in a freezing temperature zone and is usually set at −22 ° C. to −15 ° C. for frozen storage, but for example, −30 ° C. or − It may be set at a low temperature of 25 ° C.

  The switching chamber 24 is not only refrigerated set at 1 ° C to 5 ° C, vegetables set at 2 ° C to 7 ° C, and frozen at a temperature set usually at -22 ° C to -15 ° C. It is possible to switch to a preset temperature range between the freezing temperature ranges. The switching room 24 is a storage room provided with an independent door arranged in parallel with the ice making room 23, and is often provided with a drawer-type door.

  In the present embodiment, the switching chamber 24 is a storage room including the temperature range of refrigeration and freezing. However, the refrigeration is performed by the refrigeration room 22 and the vegetable room 26, and the freezing is performed by the freezing room 25. A storage room specialized for switching only the temperature zone in the middle of freezing may be used. Moreover, the storage room fixed to refrigeration may be sufficient as the demand for frozen foods has increased in recent years, for example, frozen food.

  The ice making chamber 23 makes ice with an automatic ice maker (not shown) provided in the upper part of the room with water sent from a water storage tank (not shown) in the refrigerator compartment, and an ice storage container (not shown) arranged in the lower part of the room. To store).

  The top surface of the heat insulating box has a stepped recess in the rear direction of the refrigerator. A machine room is formed in the stepped recess, and the compressor 28 and water are removed from the machine room. Houses high-pressure components of the refrigeration cycle such as a dryer (not shown). That is, the machine room in which the compressor 28 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 22.

  In this embodiment, the matters relating to the main part of the invention described below are of the type in which a compressor room is provided by providing a machine room in the rear region of the lowermost storage room of a heat insulation box that has been generally used conventionally. You may apply to the refrigerator main body 21. FIG.

A cooling chamber 29 for generating cold air is provided on the back surface of the freezing chamber 25 and is partitioned from the air passage.
In the meantime, a cooling air conveyance path to each chamber having heat insulation properties and a rear partition wall configured to thermally separate each storage chamber are configured. In addition, a partition plate for separating the freezing chamber discharge air passage and the cooling chamber 29 is provided. A cooler 30 is disposed in the cooling chamber. In the upper space of the cooler 30, cold air cooled by the cooler 30 by a forced convection method is transferred to a refrigerator room, a switching room, an ice making room, a vegetable room, and a freezer room. A cooling fan 31 for blowing air is disposed.

  Further, a radiant heater 32 made of glass tube is provided in the lower space of the cooler 30 for defrosting the frost and ice adhering to the cooler 30 and its surroundings at the time of cooling. A drain pan for receiving defrosted water, a drain tube penetrating from the deepest part to the outside of the warehouse is configured, and an evaporating dish is configured outside the downstream side of the warehouse.

  FIG. 3 is a cross-sectional view of a main part in the first embodiment of the present invention. FIG. 4 is a sectional view of the gasket. FIG. 3 is a cross-sectional view in which the opening of the refrigerator compartment 22 is sealed with a gasket 40 attached to the refrigerator compartment door 22a.

  Further, the outer box 41 of the refrigerator main body 21 forms a tightly bent shape at a position that becomes the peripheral edge 41a of the outer box 41 constituting the front opening 44, and further forms a folded portion 41b. And the inner box 42 is inserted in the folding | returning part 41b.

  Further, on the back side of the peripheral portion 41a, as a heating source for preventing the surface of the peripheral portion 41a from being cooled by the cooling in the refrigerator compartment 22 between the folded portion 41b and the outer box 41, a refrigeration cycle is used. A connected dewproof pipe 45 is provided. Then, the space between the outer box 41 and the inner box 42 is filled and foamed with a foam heat insulating material 43 such as hard foam urethane.

  A door outer plate 53 and a door inner plate 46 forming the refrigerator compartment door 22a are provided, and the door inner plate 46 is formed with a mounting groove 46a for attaching the gasket 40. The gasket 40 includes a magnet holding portion 48 that holds the magnet 47 therein, an attachment portion 49 that is inserted and attached to the attachment groove 46a, and a thin-walled flexible member that connects the attachment portion 49 and the magnet holding portion 48 in a telescopic manner. The unit 50 is configured. The magnet holding portion 48 has a substantially rectangular cross section.

  The magnet 47 is not positioned at a position on the back surface side of the attracting surface portion 47a and an attracting surface portion 47a that is a flat surface portion of the magnet 47 that is attracted to the peripheral edge portion 41a via a magnet holding portion 48 formed of a soft synthetic resin material. A suction surface portion 47b. The non-attraction surface portion 47b does not adhere to the magnet holding portion 48 and forms an air layer portion 60 that becomes a gap.

  A rib 61 is formed between the non-attraction surface portion 47 b of the magnet 47 and the magnet holding portion 48, and an air layer portion 60 is formed between the non-attraction surface portion 47 b and the magnet holding portion 48.

  The thickness dimension of the magnet 47 in the front-rear direction of the refrigerator main body 21, that is, the distance between the attracting surface portion 47a and the non-adsorbing surface portion 47b is about ½ of the thickness dimension of the magnet holding portion 48, and the attracting surface portion 47a is a flat surface. It has become.

  The rib 61 is integrally formed with the magnet holding portion 48, and the non-attraction surface portion 47 b of the magnet 47 is configured to abut against the rib 61 so that the attraction surface portion 47 a is in close contact with the magnet holding portion 48.

Therefore, the attracting surface portion 47a is arranged with no gap with respect to the magnet holding portion 48 so that the surface area of the attracting surface portion 47a is maintained, so that the magnet attracting force is maintained and the non-adsorbing surface portion 47b and the magnet holding portion 48 are Since the air layer part 60 is comprised between the external heat, the heat | fever penetration | invasion is interrupted | blocked by the air layer part 60, and the heat absorption load to a store | warehouse | chamber can be reduced.

  Although the rib 61 is integrally formed with the magnet holding portion 48, the rib of the magnet may be integrally formed on the non-attraction surface portion 47b of the magnet 47.

  Further, a fin 51 is provided on a substantially vertical surface portion 48b of the magnet holding portion 48 formed to rise in a substantially vertical direction with respect to the attracting surface portion 48a of the gasket that forms the magnet holding portion 48 that is attracted to the peripheral edge portion 41a by magnetic force, The base 51a of the fin 51 is formed integrally with the magnet holding part 48, and the free end 51b is formed to extend outward from the refrigerator.

  Of each surface of the magnet holding portion 48 formed in a substantially rectangular shape, a fin 51 is formed on a substantially vertical surface portion 48b that is the surface closest to the dew prevention pipe 45.

  Further, a gap 52 serving as an air layer is formed between the fin 51 and the peripheral edge 41a.

  Moreover, the 1st fin part 55 is integrally molded by the flexible part 50 which connects the magnet holding | maintenance part 48 and the attaching part 49, and the 1st fin part 55 is extended toward the warehouse outer side. The gasket 40 is integrally formed with a second fin portion 56 that covers the door inner plate 46 that forms the refrigerator compartment door 22a between the flexible portion 50 and the attachment portion 49 toward the outside of the warehouse.

  The distal end portion 55a of the first fin portion 55 and the distal end portion 56a of the second fin portion 56 are each free ends and are not connected to each other. When the refrigerator compartment door 22a is closed, the gasket 40 has a magnet holding portion 48 that is magnetized. When it is going to jump to the peripheral part 41a by the adsorption | suction force of 47, when the flexible part 50 is extended and the refrigerator compartment door 22a is closed completely, the flexible part 50 will shrink and the sealing performance by the gasket 40 will be maintained.

  At this time, it is important to ensure the stretchability of the flexible portion 50, and since the tip portion 55a of the first fin portion 55 is a free end portion, when the flexible portion 50 is extended, the tip portion 55a is When the flexible part 50 is contracted away from the second fin part 56, the tip part 55a is kept in contact with the second fin part 56, and an air layer 57 is formed by the first fin part 55 and the second fin part 56. To do.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, as described above, the surface of the peripheral edge portion 41 a is cooled by the cooling in the refrigerator compartment 22 in the peripheral edge portion 41 a of the front opening of the refrigerator compartment 22 configured in the refrigerator main body 21. In order to prevent the cooled peripheral edge portion 41a from condensing, the heat of the dew-proof pipe 45 serving as a heat source embedded in the peripheral edge portion 41a is thermally conducted to the metal peripheral edge portion 41a and is in close contact with the peripheral edge portion 41a of the gasket 40. Is transmitted to the magnet holding part 48.

  At this time, the fin 51 formed in the magnet holding portion 48 closest to the dew prevention pipe 45 conducts heat of the dew prevention pipe 45 from the base portion 51a to the free end portion 51b to provide a gap provided around the fin 51. The heat radiation area of the fin 51 is secured by the part 52 and the heat of the dew proof pipe 45 is radiated. Accordingly, heat conduction to the magnet 47 can be suppressed, and external heat absorbed into the refrigerator compartment 22 through the gasket 40 can be reduced.

  In addition, since the plurality of fins 51 form gaps 52 between the fins 51 in the substantially vertical surface portion 48b to further increase the heat radiation area for dissipating the heat of the dew prevention pipe 45, further into the refrigerator compartment 22. It is possible to reduce heat absorption.

The gasket 40 is formed by extrusion molding with a soft synthetic resin material, and the fins 51 are integrally molded. In addition to the refrigerating chamber 22, the gasket 40 is also provided for the ice making chamber 23, the switching chamber 24, the freezing chamber 25, the peripheral portion 41a of the vegetable chamber 26, and the dew-proof pipe 45 embedded between partition walls (not shown). Constitutes the fin 51 in the same manner as described above, and can reduce heat absorption into the room.

  When the refrigerator door 22a is closed, the heat of the outside air is blocked to some extent by the blocking effect of the air layer 57, and the outside air enters the gap between the flexible portion 50 and the second fin portion 56. Can be prevented, and heat intrusion into the cabinet can be reduced.

  Further, since the tip end portion 55a of the first fin portion 55 is inclined toward the second fin portion 56, even if the first fin portion 55 or the second fin portion 56 is deformed due to variations in the gasket 40 or the like. When the door is closed, the first fin portion 55 can be brought into contact with the second fin portion 56 to form the air layer 57, and the heat intrusion of outside air can be reduced.

  Further, the thickness of the flexible portion 50 on the side of the mounting portion 49 is formed thinner than the thickness on the side of the magnet holding portion 48, so that the flexibility of the flexible portion 50 on the side of the mounting portion 49 is increased and the magnet holding portion 48 is increased. By making the side thick, it is possible to maintain the adsorptivity with the peripheral edge portion 41a when the door is closed.

  Moreover, although demonstrated with the refrigerator compartment door 22a, it is also the same structure as the above also to the gasket 40 attached to the door of the freezer compartment 25, the ice making compartment 23, and the vegetable compartment 26, and the heat | fever penetration | invasion of external air can be reduced, and consumption of a refrigerator The amount of power can be reduced.

(Embodiment 2)
FIG. 5 is a cross-sectional view of a main part of the second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The magnet 62 of the gasket 40 is formed in a substantially triangular shape with a chamfered cross section, and an air layer is formed by two sides formed on the inner side of the magnet holding portion 48 having a substantially rectangular cross section and the non-adsorptive surface portion 62b of the magnet 62. A portion 63 is formed. Further, the rib 64 is in contact with the non-attraction surface portion 62b so that the attraction surface portion 62a serving as the flat surface portion of the magnet 62 is in close contact with the attraction surface portion 48a of the gasket forming the magnet holding portion 48.

  As a result, the attracting force of the magnet 62 is maintained, and the air layer portion 63 is formed between the non-attracting surface portion 62 b and the magnet holding portion 48 by the ribs 64, so that external heat is absorbed by the air layer portion 63. The intrusion is blocked and the heat absorption load into the cabinet can be reduced.

  The rib 64 is integrally formed with the magnet holding portion 48 made of soft synthetic resin, but the air layer portion 63 may be formed by integrally forming the magnet 62 and the rib 64.

  As a result, external heat can be blocked by the air layer portion 63.

  As described above, the refrigerator according to the present invention can be applied to a magnet gasket of a household or commercial refrigerator.

21 Refrigerator body 22a Refrigeration room door 40 Gasket 41a Peripheral part 44 Front opening 47, 62 Magnet 47a, 62a Adsorption surface part 47b, 62b Non-adsorption surface part 48 Magnet holding part 60, 63 Air layer part 61, 64 Rib

Claims (3)

A refrigerator main body, a door, and the door has a gasket that adsorbs to a peripheral edge portion of a front opening of the refrigerator main body, the gasket has an attachment portion that is attached to the door, a magnet is held inside, and the peripheral edge portion In a refrigerator comprising a magnet holding part to be adsorbed, and a flexible part that connects the attachment part and the magnet holding part in a stretchable manner, between the magnet and the magnet holding part inside the magnet holding part. A refrigerator characterized by forming an air layer portion. The magnet has an adsorption surface portion adsorbed on a peripheral edge portion and a non-adsorption surface portion serving as a back surface of the adsorption surface portion, and an air layer portion is formed between the non-adsorption surface portion and the magnet holding portion. The refrigerator according to 1. The refrigerator according to claim 2, further comprising a rib between the non-adsorbing surface portion of the magnet and the magnet holding portion.