JP5934951B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator that is closed in a double door manner with left and right doors that are provided with a front opening of a storage chamber provided in an upper part of a main body.

  Large-capacity refrigerators for home use have commercialized refrigerators with many doors in each storage room along with diversification of cooling storage temperature to meet various user needs. The top freezer type with the top placed, the middle freezer type with the freezer compartment placed between the upper refrigerator compartment and the lower vegetable compartment, the bottom freezer type with the freezer compartment placed at the bottom, and the upper refrigerator compartment below Various forms such as a type in which a vertically long freezer room and a vegetable room are juxtaposed and a side-by-side type in which a freezer room and a refrigerator room are juxtaposed on the left and right have been commercialized.

  In such a product environment, in recent years, considering ease of use, a refrigerator room that is frequently used and has the largest storage capacity has been placed at the top as a double door, and an ice making room and a temperature switching room are located below it. The main type is a vegetable room at the bottom and a freezer room at the bottom. When the door is closed on the inner surface of one open end of the refrigerating compartment door, it turns to the other door. A partition is attached to provide a gasket adsorption surface.

  Furthermore, in the case of the double doors in recent refrigerators, the size of the door is increased and the longitudinal dimension is long, and in order to solve the problem of the external design due to the curved long partition in the longitudinal direction, A thin steel plate partition plate that forms the suction surface of the door gasket of the body, the flat suction surface and its side edges are folded back inward, overlapped, and further folded inward to have an angle part The outer peripheral surface of the partition plate and the outer surface of the heat insulating member provided on the inner side of the partition plate are covered with a synthetic resin partition frame body, and the partition plate is engaged and held by the partition frame body. The thing which stuck the surface heater and prevented the dew condensation which generate | occur | produces on the partition plate surface has prevailed widely (for example, refer patent document 1).

  Hereafter, the specification of the rotation partition of the conventional refrigerator is demonstrated using FIG. 10, FIG.

  The basic structure of the rotating partition 13 includes a partition plate 16 made of a thin steel plate, which is a magnetic body that forms an attracting surface, a molded heat insulating member 18 made of polystyrene foam that forms a heat insulating layer, and the rotating partition 13 that covers these components. A synthetic resin partition frame 17 forming an outer shell, a surface heater 19 made of an aluminum foil heater or the like disposed on the inner surface of the partition plate 16, and an upper end portion of the rotary partition 13 are disposed on the upper end surface. The cap member 58 is formed with a guide groove.

  In general, in the above configuration, since the partition plate 16 made of a thin steel plate and the surface heater 19 are in direct contact with each other, it is necessary to provide a ground wire for connecting the partition plate 16 and the refrigerator 1 main body as a countermeasure against electric leakage. is there.

  Further, the cap member 58 for fitting the refrigerator and the rotary partition 13 also serves to cover and connect the upper ends of the partition plate 16 and the partition frame 17.

JP 2010-249491 A

  However, in the above conventional configuration, the door gasket 12 cooled by the temperature effect of the refrigerator compartment that has become a low temperature directly contacts the partition plate 16 made of a thin steel plate having high thermal conductivity, so that the atmosphere of the partition plate 16 is increased. There was a problem that the surface temperature of the open portion was lowered, the capacity of the surface heater was increased more than necessary, and the power consumption was increased.

  This invention solves said subject and aims at providing the refrigerator which can reduce the electric power input to heating means, such as a heater of a rotary partition.

  In the above conventional configuration, the partition plate is made of a non-insulating thin steel plate and has a large area. When an electric part such as a surface heater is attached to the inner surface, it is necessary to provide a ground wire in consideration of leakage. There is a problem that the configuration is complicated and the cost is high.

  An object of the present invention is to solve the above problems, and to provide a refrigerator in which a ground wire is eliminated, a cost can be reduced with a simple configuration, and a partition plate can be designed with an optimum size.

In order to solve the above-mentioned conventional problems, the refrigerator of the present invention is closed in a double door manner with left and right doors that are arranged with the front opening of the storage room, and is vertically mounted on the inner surface of at least one of the left and right doors on the side opposite to the pivot. In a refrigerator provided with a rotating partition body extending in a direction to serve as a suction surface for a door gasket, the rotating partition body includes at least a partition plate that forms a suction surface for the door gasket, and a heat insulating material disposed inside the rotary partition body. A partition frame that covers the peripheral edge of the partition plate and the outer surface of the heat insulating material, a linear heater that is linearly disposed on the inner surface of the partition plate, and the door gasket in a state where the left and right doors are closed A rectangular parallelepiped plastic magnet disposed in the concave portion on the inner surface of the partition plate at a position facing the magnetic body incorporated in the partition plate , the partition plate and the partition frame body are made of synthetic resin, and the linear shape Heater is on The resin thickness of the partition plate at the contact point is 0.8 mm or more and 3 mm or less, and the linear heater and the plastic magnet are connected to the partition plate and the cutting plate
It is held in pressure contact between the heat materials . Thereby, the electric power input to the heating means for preventing the condensation of the rotating partition is suppressed, and the ground wire can be eliminated. Furthermore, the minimum required electric power input to the heating means and the allowable deformation amount of the partition plate due to the heat amount of the heating means can be taken into consideration, and an optimum rotating partition can be configured by designing the resin thickness dimension of the partition plate.

  In the refrigerator of the present invention, a magnetic body is disposed on the inner surface of the partition plate, and the magnetic body is disposed at a position facing the magnetic body incorporated in the door gasket in a state where the left and right doors are closed. The resin thickness of the partition plate where the magnetic material comes into contact is 0.5 mm or more and 2 mm or less. As a result, it is possible to secure the minimum necessary adsorption force between the door gasket and the partition plate, and to consider the allowable deformation amount at the time of molding the partition plate resin, and it is possible to configure an optimum rotating partition body by designing the resin thickness dimension of the partition plate.

  The refrigerator of the present invention can minimize power input for preventing condensation of the rotating partition and can save energy.

The front view which shows the door opening state of the double doors of the refrigerator by Embodiment 1 of this invention Sectional drawing which shows the principal part in the closed state of the refrigerator compartment by Embodiment 1 of this invention Detail enlarged view of part A of FIG. 2 of the refrigerator compartment according to Embodiment 1 of the present invention Detail enlarged view of part A of the refrigerating room according to Embodiment 1 of the present invention in FIG. FIG. 2 is a cross-sectional view of the refrigerator compartment according to the first embodiment of the present invention, taken along line BB in FIG. The exploded perspective view of the rotation partition of the refrigerator compartment by Embodiment 1 of the present invention The graph explaining the relationship between the electricity supply rate of the heating means of the refrigerator by Embodiment 1 of this invention, and the surface temperature of a partition plate The figure explaining the partition plate thickness of the refrigerator by Embodiment 1 of this invention, the deformation | transformation amount by heating, and the surface temperature rise value The figure explaining the partition plate thickness of the refrigerator by Embodiment 1 of this invention, the deformation amount by shaping | molding, and the relationship of the adsorption amount by a magnetic body Sectional drawing which shows the closed state of the refrigerator compartment door of the conventional refrigerator The exploded perspective view of the rotation partition of the conventional refrigerator

According to the first aspect of the present invention, there is provided a rotating partition body that is closed in a double-spreading manner with left and right doors arranged in parallel with the front opening of the storage chamber, and that hangs vertically on the inner surface of at least one of the left and right doors on the opposite side. In the refrigerator provided and used as the suction surface of the door gasket, the rotating partition includes at least a partition plate that forms the suction surface of the door gasket, a heat insulating material disposed inside the rotating partition, and a peripheral edge of the partition plate And a partition frame that covers the outer surface of the heat insulating material, a linear heater that is linearly disposed on the inner surface of the partition plate, and a magnetic body that is built in the door gasket in a state where the left and right doors are closed. A rectangular parallelepiped plastic magnet disposed in the inner surface concave portion of the partition plate at an opposing position, the partition plate and the partition frame body are made of synthetic resin, and the portion where the linear heater abuts is formed. Partition tree The fat thickness is 0.8 mm or more and 3 mm or less, and the linear heater and the plastic magnet are held in pressure contact between the partition plate and the heat insulating material. It is possible to prevent dew condensation on the surface of the partition plate of the rotating partition with a minimum power input while suppressing the amount of deformation of the plate, that is, eliminating the influence of repeated stress on the rotating partition due to warping.

According to a second aspect of the present invention, in the first aspect of the present invention, the resin thickness of the partition plate at a location where the plastic magnet abuts is 0.5 mm or more and 2 mm or less. The amount of deformation at the time of molding, that is, warpage can be suppressed, and the partition plate thickness is minimal, so that the adsorbing force with the door gasket is ensured, and the heat intrusion from the outside into the cabinet can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view showing an open state of a double door of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view showing a main part in a closed state of a refrigerator compartment according to Embodiment 1, and FIG. 2 is a detailed enlarged view of part A of FIG. 2 of the refrigerating room according to the first embodiment, FIG. 4 is a detailed enlarged view of part A of FIG. 2 of the refrigerating room according to the first embodiment, and FIG. 5 is the same embodiment. 2 is a cross-sectional view of the refrigerator compartment according to FIG. 2, FIG. 6 is an exploded perspective view of the rotating partition of the refrigerator compartment according to the first embodiment, and FIG. 7 is an energization of the heating means of the refrigerator according to the first embodiment. 8 is a graph illustrating the relationship between the rate and the surface temperature of the partition plate, FIG. 8 is a diagram illustrating the relationship between the partition plate thickness of the refrigerator according to the first embodiment, the amount of displacement due to heating, and the surface temperature rise value, and FIG. The figure explaining the relationship between the partition plate thickness of the refrigerator according to Embodiment 1, the amount of deformation by molding, and the amount of adsorption by the magnetic material A.

  In FIG. 1, a refrigerator 100 has a left door 102 located on the left side and a right door 103 located on the right side, and FIG. 1 shows a state in which the left door 102 and the right door 103 are opened. . A portion where the left door 102 and the right door 103 are provided is a portion of the refrigerated storage chamber 105, and an ice making chamber 106 is provided below the left door 102, and a frozen storage chamber 107 and a vegetable compartment 108 are provided below. A switching chamber 109 is provided below the right door 103 and to the right of the ice making chamber 106.

The left door 102 and the right door 103 are pivotally supported by hinge portions, respectively, and are configured to open to the left and right sides. A rotating partition 200 is provided on the non-pivot side of the left door 102. The rotating partition 200 rotates according to the opening / closing operation of the left door 102. When the left door 102 is closed, the non-pivot side of the left door 102 and the right door 103 is closed via the door gasket 110 to store in a refrigerator. Cold air leakage from the chamber 105 is prevented.

  Here, a heat insulating partition member (not shown) is disposed between the storage compartments, and steel cover 501, 502, 503 is disposed on the front surface of the heat insulation partition member, and each storage compartment door is provided. The door is closed via a door gasket to prevent cold air leakage from each storage room.

  Next, in FIG. 2 to FIG. 9, the rotary partition 200 includes a partition plate 210 that forms the suction surface 111 of the door gasket 110, a polystyrene foam heat insulating material 220 disposed inside the rotary partition 200, and a partition. It consists of a synthetic resin partition frame 230 that covers the peripheral edge of the plate 210 and the outer surface of the heat insulating material 220, and heating means 240 disposed at the center of the inner surface of the partition plate 210.

  The partition plate 210 is made of synthetic resin, and two magnetic bodies 211 are attached to the inner surface. The magnetic body 211 is configured in substantially the entire height region of the rotary partition 200 with respect to the height direction of the refrigerator, and the magnetic body configured in the door gasket 110 when the left door 102 and the right door 103 are closed. 112. In this embodiment, a rectangular parallelepiped plastic magnet is used. Further, the heating means 240 and the magnetic body 211 are held in pressure contact between the partition plate 210 and the heat insulating material 220. The heating means 240 is a linear device such as a linear heater, and is disposed between the magnetic bodies 211 in parallel with the magnetic bodies 211.

  Here, the detailed example of the arrangement | positioning relationship of the partition plate 210, the heating means 240, and the magnetic body 211 is demonstrated. For example, as shown in FIG. 3, the partition plate 210 is flat on the air release side, and is separated from the resin thickness distance X by the partition plate 210 and the heating means 240 (linear heater insulation coating) on the heat insulating material 220 side. Abut. Similarly, the magnetic body 211 is also in contact with the partition plate 210 on the side of the heat insulating material 220 with a resin thickness distance Y therebetween.

  Next, FIG. 4 shows another example. In the partition plate 210, the atmosphere opening portion 212 has a curved convex portion on the atmosphere side, and the resin thickness distance X is separated from the heat insulating material 220 side. The heating means 240 is fitted in the recess, and the partition plate 210 and the heating means 240 (linear heater insulation coating) are brought into contact with each other. Further, the magnetic body 211 comes into contact with the partition plate 210 on the side of the heat insulating material 220 separated by the resin thickness distance Y at the location of the partition plate 210 whose atmosphere side is a plane. By forming the partition plate 210 into a shape as shown in FIG. 4, a molding die having a complicated shape is not necessary, and the heating means 240 can be easily aligned during assembly.

  The overall configuration of the rotary partition 200 will be described in a little more detail with reference to the perspective view of FIG. The rotary partition 200 includes a synthetic resin partition plate 210 that forms the adsorption surface 111 of the door gasket 110, a polystyrene foam heat insulating material 220 (not shown) disposed inside the rotary partition 200, and a partition plate. A synthetic resin partition frame 230 covering the peripheral edge of 210 and the outer surface of the heat insulating material 220, a heating means 240 disposed in the center of the inner surface of the partition plate 210, and a heating means 240 on the inner surface of the partition plate 210. Two magnetic bodies 211 are attached in a sandwiched manner.

  At this time, a guide groove 231 is formed on the upper end surface of the partition frame 230, and a guide pin (not shown) protruding downward from the ceiling surface of the refrigerator 100 is engaged.

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

First, in the conventional configuration, the door gaskets 11 and 12 cooled by the temperature effect of the refrigerator compartment 3 which has become low temperature are in direct contact with the partition plate 16 made of a thin steel plate having a high thermal conductivity. In the case of the present embodiment, the surface temperature of the air release portion of the partition plate 16 is lowered, and it is necessary to increase the capacity of the surface heater 19 in order to make up for this to be equal to or higher than the dew point temperature. The partition plate 210 that forms the suction surface 111 of the door gasket 110 of the rotary partition 200 is made of synthetic resin. Thus, as shown in the graph of the relationship between the energization rate of the heating means and the surface temperature of the partition plate in FIG. 7, the surface temperature of the partition plate 210 in this embodiment is the same as that of the conventional example under the same energization rate conditions. It can be seen that the energization rate for maintaining the dew point temperature when the surface temperature of the partition plate is about 3 ° C. higher than the surface temperature of the partition plate and the outside air conditions are 30 ° C. and 75% can be reduced by about 10%. This is because the partition plate 210 with which the door gasket 110 contacts is made of a synthetic resin having a low thermal conductivity, so that a decrease in the temperature of the atmosphere opening portion 212 of the partition plate 210 is suppressed.

  In addition, by disposing the magnetic body 211 so as to face the magnetic body 112 configured in the door gasket 110, it is possible to ensure the basic function of the rotating partition 200, such as adsorption to the door gasket 110. .

  Next, distances X and Y of the resin thickness of the partition plate 210 shown in FIGS. 3 and 4 will be described with reference to the relational diagrams of FIGS. 8 and 9. First, in FIG. 8, when a certain amount of heat is supplied from the heating means 240 to change the resin thickness distance X between the heating means 240 and the atmosphere release section 212, the temperature of the atmosphere release section 212 (measurement point Z) increases. The value ΔT varies with a linear line descending to the right. That is, ΔT decreases as the resin thickness of the partition plate 210 increases. At this time, it was found that the minimum limit of ΔT that does not cause condensation on the surface of the partition plate 210 was experimentally when the thickness X was 3 mm. The most ideal value of thickness X was 1 mm and ΔT was 3 ° C.

  Further, when heat is applied from the heating means 240, the partition plate 210 is deformed in the direction of warping due to the difference in thermal expansion coefficient, and the amount of deformation changes in a quadratic curve descending to the right. That is, the amount of deformation increases as the resin thickness of the partition plate 210 decreases. At this time, it was found that the maximum deformation amount at the stress limit considering the reliability of the partition plate 210 was experimentally when the thickness X was 0.8 mm. In summary, 3 mm or less is preferable from the viewpoint of preventing condensation on the surface of the partition plate 210, 0.8 mm or more is preferable from the point of eliminating repeated stress of the rotating partition 200, and the resin thickness X is optimally in the range of 0.8 mm ≦ X ≦ 3 mm. It becomes.

  Next, in FIG. 9, if the resin thickness distance Y between the magnetic body 211 of the partition plate 210 and the adsorption surface of the door gasket 110 is changed in the magnetic body 211 having a constant magnetic force, the magnetic body 211 of the rotating partition 200 The adsorbing force with the door gasket 110 changes in a straight line that descends to the right. That is, the adsorption force decreases as the resin thickness of the partition plate 210 increases. At this time, it has been experimentally found that the minimum adsorbing force capable of preventing the cold air leakage from the refrigerated storage chamber 105 by the adsorption of the rotating partition 200 and the door gasket 110 is a thickness Y of 2 mm.

  Further, when the partition plate 210 is resin-molded, warpage occurs, and the amount of displacement changes with a quadratic curve that descends to the right. That is, the amount of deformation increases as the resin thickness of the partition plate 210 decreases. At this time, it has been found that the maximum deformation amount at which the warp of the partition plate 210 does not affect the adhesion with the door gasket 110 is experimentally when the thickness Y is 0.5 mm. In summary, 2 mm or less from the point of securing the attractive force by the magnetic material 211, 0.5 mm or more is good from the point of eliminating the influence of warping when the partition plate 210 is molded, and the resin thickness Y is in the range of 0.5 mm ≦ Y ≦ 2 mm. Is optimal.

As described above, in the present embodiment, the rotary partition 200 that extends in the vertical direction is provided on the inner surface of at least one of the left and right doors of the refrigerated storage chamber 105 (here, the left door 102) on the side opposite to the pivot. Then, the adsorption surface 111 of the door gasket 110 is a synthetic resin partition plate 210, and a magnetic body 211 is disposed inside the partition plate 210 at a position facing the magnetic body 112 built in the door gasket 110, and between the magnetic bodies 211. The heating means 240 is arranged linearly in parallel, the peripheral edge of the partition plate 210 and the outer surface of the heat insulating material 220 are covered with a synthetic resin partition frame 230, and the resin of the partition plate 210 where the heating means 240 abuts. By setting the thickness X in the range of 0.8 mm ≦ X ≦ 3 mm, the influence of warping due to the deformation of the rotating partition 200 when the heating means 240 is heated can be eliminated, and the surface temperature of the partition plate 210 is controlled. Thin steel can be maintained higher than, the power input of the heating means 240 for preventing dew condensation is reduced, it is possible to reduce the power consumption of the refrigerator 100.

  In addition, the magnetic body 211 is disposed at a position facing the magnetic body 112 built in the door gasket 110 in a state where the left and right doors 102 and 103 are closed, and the resin of the partition plate 210 at the location where the magnetic body 211 abuts. By setting the thickness Y in the range of 0.5 mm ≦ Y ≦ 2 mm, warpage due to deformation of the partition plate 210 during resin molding can be suppressed, and the thickness of the partition plate 210 is minimized, so Adsorption power is secured, heat penetration from the outside into the refrigerated storage room 105 can be suppressed, and power consumption of the refrigerator 100 can be further reduced.

  As described above, the refrigerator according to the present invention is such that the partition plate which is the adsorption surface of the rotating partition and the door gasket is made of resin, and power consumption can be reduced while preventing condensation. It can also be applied to. Moreover, the method of arranging a magnetic body on the inner surface of the resin flange and adsorbing it with the door gasket can also be applied to the front cover of the heat insulating partition member that partitions the storage compartments of the refrigerator.

DESCRIPTION OF SYMBOLS 100 Refrigerator 102 Left side door 103 Right side door 105 Refrigerated storage room 106 Ice making room 107 Frozen storage room 108 Vegetable room 109 Switching room 110 Door gasket 111 Adsorption surface 112 Magnetic body 200 Rotary partition body 210 Partition plate 211 Magnetic body 212 Atmospheric release part 220 Thermal insulation Material 230 Partition frame 231 Guide groove 240 Heating means 501, 502, 503 Cover

Claims (2)

It is closed in a double-spreading manner with left and right doors that are aligned with the front opening of the storage chamber, and a rotating partition body that extends in the vertical direction is provided on the inner surface of at least one of the left and right doors as an adsorption surface of the door gasket In the refrigerator, the rotating partition covers at least a partition plate that forms an adsorption surface of the door gasket, a heat insulating material disposed inside the rotating partition, a peripheral portion of the partition plate, and an outer surface of the heat insulating material. A partition frame, a linear heater disposed linearly on the inner surface of the partition plate, and an inner surface of the partition plate at a position facing the magnetic body incorporated in the door gasket in a state where the left and right doors are closed. A rectangular parallelepiped plastic magnet disposed in the recess, the partition plate and the partition frame are made of synthetic resin, and the resin thickness of the partition plate at the location where the linear heater contacts is 0.8 mm. Above The refrigerator , wherein the linear heater and the plastic magnet are held in pressure contact between the partition plate and the heat insulating material . The refrigerator according to claim 1, wherein a resin thickness of the partition plate where the plastic magnet comes into contact is 0.5 mm or more and 2 mm or less.

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