JP4859898B2 - Freezer refrigerator - Google Patents

Description

  The present invention relates to a refrigerator-freezer, and more particularly, to a refrigerator-freezer provided with a door device having a partition that rotates with the opening and closing of one of the doors. It is.

  In the conventional refrigerator-freezer, generally, the top chamber is a refrigerating chamber, the door is composed of a double door, and a gasket having a magnet is attached to the inner peripheral edge of both doors. A partition body for closing a gap between the doors is provided on the inner side of the central portion side (the joint side of the doors) of the doors. This partition is rotatably supported by a support arm provided on one door, and an arcuate guide groove provided on the upper end of the partition is fitted to a guide pin provided on the box body.

  When the door is closed, the guide groove of the partition is fitted to the guide pin, and the partition is parallel to the door and closes the gap between the left and right doors. The front part of the partition is made of a steel plate, and the front part is adsorbed by a gasket magnet provided on the door to keep it airtight. When the door that supports the partition is opened, the partition rotates 90 ° while moving along the guide pin, the guide groove comes off the guide pin, and when the door is closed, the guide groove fits into the guide pin and the partition Is rotated 90 ° in the reverse direction to return to the original state.

  However, the partition body of such a conventional door device has a front part formed of a steel plate (hereinafter referred to as a front steel plate) and has a high thermal conductivity, so that it is easily cooled by the influence of cool air inside the cabinet and the outer surface of the front steel plate. There was a problem that when the water cooled and condensed, the water gradually dropped to the floor and damaged the floor. Therefore, in order to solve such a problem, there is one in which a heater is installed on the back side of the front steel plate and the front steel plate is heated to prevent condensation (for example, see Patent Document 1).

  Also, the front plate that contacts the door of the refrigerator partition wall is made of a material with low thermal conductivity such as synthetic resin, and the magnetic material such as a steel plate to be adsorbed by the magnet of the gasket provided on the door is placed behind the front plate. (See, for example, Patent Documents 2 and 3).

Japanese Patent Laid-Open No. 10-47844 (page 3, FIG. 1-2) Japanese Patent Laid-Open No. 11-118327 (page 4-5, FIG. 1) Japanese Patent Laid-Open No. 11-311478 (page 3-4, FIG. 1)

  According to the refrigerator-freezer of Patent Document 1, it is possible to prevent the formation of condensation on the front steel plate of the partition provided on the door, but the heater not only wastes power but also heat load in the cabinet due to the heat of the heater. There is a problem that power consumption increases.

In addition, the refrigerator-freezers of Patent Documents 2 and 3 have a problem that the strength of the front plate is reduced because the front plate of the partition wall is formed of synthetic resin, and that when it is applied to the partition, it is easily deformed.
In addition, since the steel plate for adsorbing the magnet of the gasket is provided on the back side of the synthetic resin front plate, the adsorptivity of the magnet is weak, and when this is applied to the door partition, the airtightness is reduced. There is a fear. Furthermore, when a heated object such as a heater is brought into contact with the steel plate for attracting the magnet of the gasket, there is a problem that the heat flow that travels through the steel plate or the like and enters the cabinet increases, resulting in an increase in power consumption.

  The present invention has been made to solve the above-described problems, and can reliably prevent the occurrence of condensation on the front surface of the partition provided on the double doors, and is provided on the upper partition. An object of the present invention is to provide a refrigerator-freezer provided with a door device that can reduce the power supplied to the heater.

  The refrigerator-freezer according to the present invention has a double door type door device that opens and closes an opening provided with a gasket having a magnet on the inner peripheral edge, and the upper and lower sides of the free end of one door of the door device on the inner side. A partition provided rotatably in the direction, and the partition is a magnet-adsorbing steel plate provided with a magnet attracting portion exposed to the outside of the chamber on both sides of the recess opening to the outside of the chamber, and opened to the inside of the chamber A heater is provided in the recess of the magnet adsorption steel plate and the front surface is exposed to the outside of the warehouse, and the heater heating steel plate having a U-shaped cross section is exposed between the magnet adsorption steel plate and the heater heating steel plate. What was comprised by the front part which consists of the resin for heat insulation interposed, the resin case of cross-sectional U shape covering the inner side of a warehouse, and the heat insulating material interposed between this resin case and the said front part It is.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent reliably that dew condensation generate | occur | produces in the front part of the partition provided in the double doors, and the electric power supplied to the heater provided in the upper partition can be reduced. The refrigerator-freezer provided with the door device which can be obtained can be obtained.

[Embodiment 1]
FIG. 1 is a perspective view of a refrigerator-freezer according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged explanatory view of a main part (indicated by reference numeral T) of FIG.
The top room of the refrigerator-freezer 1 is a refrigerator room, and a door device comprising a double door left door 2 and a right door 3 is provided at the front opening. And the gasket 5 which has the magnet 4 (refer FIG. 3) and in which the air layer was formed is provided in the peripheral part inside the store | warehouse | chamber of the left and right doors 2 and 3, respectively.

  10 is provided to close the gap between the doors 2 and 3 in the vertical direction of the central side end (in the opposite side of the right door 3, hereinafter referred to as a free end) inside the left door 2. The partition is rotatably supported by pins 12 on a support arm 11 provided inside the left door 2. An arcuate guide groove 13 is provided at the upper end of the partition 10 so as to open on the right door 3 side and fit into a guide pin 14 provided on the bottom surface of the top of the box body.

As shown in FIG. 2, in the double door type left and right doors 2, 3 of the refrigerating room configured as described above, when both the doors 2, 3 are closed, the guide groove 13 of the partition 10 has guide pins 14 as shown in FIG. 2. The partition 10 is parallel to the left door 2 and closes the gap between the doors 2 and 3.
When the left door 2 is opened in the direction of arrow a, the partition 10 moves while the guide groove 13 rotates along the guide pin 14 in the direction of arrow b, rotates 90 °, and the guide groove 13 comes off the guide pin 14. The left door 2 is greatly opened.

  When the left door 2 is closed, the guide groove 13 of the partition 10 is fitted into the guide pin 14 again, and the partition 10 is rotated by 90 ° in the counter arrow b direction to return to the original state again. In FIG. 1, 6 is an ice making room door, 7 is a switching room door, 8 is a vegetable room door, 9 is a freezing room door, and the drawing type door is shown in the figure.

3 is a cross-sectional view of the main parts of the left and right doors and the partition body in FIG. 2 (corresponding to the AA cross section in FIG. 1), and FIG. 4 is an enlarged view of the partition body in FIG. The same parts as those in FIG. 2 are denoted by the same reference numerals.
The front surface portion 15 (outside of the compartment) of the partition 10 is composed of a magnet adsorbing steel plate 16, a heater heating steel plate 17, a heat blocking resin 18, and a heater 20 for heating the heater heating steel plate 17. Is covered with a resin case 21 having a U-shaped cross section, and a heat insulating material 22 is filled inside.

  The magnet attracting steel plate 16 is provided with a recess 16a that opens to the outside of the store at the center in the width direction, and magnet attracting portions 16b that are exposed to the outside of the store are formed on both sides thereof. It is bent and joined to the inner wall of the resin case 21.

  The heat shielding resin 18 is formed in a U-shaped cross section that opens to the outside of the warehouse, and is fitted in the recess 16 a of the steel plate 16 for magnet adsorption. In addition, a heater heating steel plate 17 having a U-shaped cross section that opens to the inside of the chamber is fitted in the recess of the heat shielding resin 18, and the heater 20 is attached to the recess 17a with an aluminum tape 20a. It is attached. In this state, the outer surface of the heater heating steel plate 17 is positioned substantially on the same plane as the magnet attracting portion 16b of the magnet attracting steel plate 16.

In the partition 10 in which the front surface portion 15 is configured as described above, the magnet-adsorbing steel plate 16 and the heater heating steel plate 17 are provided with a heat-blocking resin 18 interposed therebetween, so that they are in contact with each other. Insulated without
Although not shown in FIG. 3, the upper end of the partition 10 is provided with a guide groove 13 that fits into a guide pin 14 provided on the box body, and the partition 10 is the same as in FIG. Similarly, it is rotatably supported by a pin 12 on a support arm 11 provided on the left door 2. In the following description, the exposed portion on the outside of the front surface portion 15 of the support 10 is referred to as a front surface exposed portion.

  In the refrigerator-freezer 1 according to the present embodiment provided with the door device as described above, the operation of the partition body 10 accompanying the opening and closing of the doors 2 and 3 is as described in FIG. According to the present embodiment, since the heater 20 is provided on the front surface portion 15 of the partition 10 and the heater heating steel plate 17 is heated, dew condensation does not occur at the front exposed portion.

  As is well known, the heat flow easily propagates through parts made of a material having a high thermal conductivity and has a property of flowing from the high temperature side to the low temperature side, so that the heat from the heater 20 is diffused through the heater heating steel plate 17. As in the past, when one steel plate component communicates from the heater to the inside of the cabinet, the heat of the heater penetrates through the steel plate to the inside of the cabinet, increasing the thermal load in the cabinet and increasing the temperature of the steel plate. The power supplied to the heater has increased because of the tendency to decrease.

  In the present embodiment, the heater heating steel plate 17 is surrounded by a heat blocking resin 18, and the resin has a lower thermal conductivity than the steel plate and heat is less likely to be transmitted, so the heat of the heater 20 is less likely to be transferred into the chamber. Therefore, when electric power equivalent to that in the past is applied to the heater 20, the temperature of the heater heating steel plate 17 rises from that in the past.

In order to prevent dew condensation on the front exposed portion of the front surface portion 15 of the partition body 10, the temperature of the heater heating steel plate 17 should be equal to or higher than the dew point temperature of the outside air. Therefore, the power consumption wasted by the heater 20 can be reduced.
Moreover, since the heat load which penetrates into the store | warehouse | chamber from the partition 10 reduces, refrigeration capacity is low, and since this can reduce the operation rate and rotation speed of a compressor, the power consumption for compressor operation Can be reduced.

  The material of the member that blocks the heat from the heater heating steel plate 17 may be other than resin as long as the material has a low thermal conductivity, and the energy saving effect is greater as the material has a lower thermal conductivity. When the member for heating the heater is a steel plate, the surface temperature of the front surface portion 15 can be easily made uniform, and the temperature distribution can be made more uniform by attaching the heater 20 to the steel plate with the aluminum tape 20a. If the temperature distribution is non-uniform, a portion that heats up to the dew point temperature or more is generated, and the input power to the heater 20 increases. Therefore, by making the temperature distribution uniform, the input power to the heater 20 is minimized. be able to.

  Further, according to the present embodiment, the front surface portion 15 of the partition 10 is composed of the magnet adsorption steel plate 16, the heater heating steel plate 17, and the heat shielding resin 18, and the steel plate is bent to increase the strength. In addition, since the magnet-adsorbing steel plate 16 is formed of one component, it is resistant to twisting. Therefore, even if a rotational motion is applied to the partition 10, the components do not shift in position.

  Furthermore, since the magnet adsorption | suction part 16b adsorbed | sucked to the magnet 4 of the gasket 5 of the steel plate 16 for magnet adsorption | suction is exposed out of the store | warehouse | chamber, the adsorption rate of the magnet 4 is high, Therefore Airtightness is maintained reliably. Since both ends of the magnet attracting steel plate 16 (including the front steel plate 26 described later) are located inside the partition 10, there is no possibility of damaging a finger or the like due to burrs at the end.

[Embodiment 2]
FIG. 5 is a cross-sectional view of the main parts of the left and right doors and the partition of the refrigerator compartment of the refrigerator-freezer according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
The front surface portion 15 of the partition 10 according to the present embodiment is configured by the magnet adsorption steel plate 16 having the same structure as the magnet adsorption steel plate 16 of the first embodiment and the heater heating resin 23.

The heater heating resin 23 is formed in a U-shaped cross section that opens to the inside of the cabinet, and is fitted and fixed in the recess 16a of the magnet adsorption steel plate 16, in which the heater 20 is attached with aluminum tape. It has been.
In this embodiment, since the heating member to which the heat of the heater 20 is transmitted is made of a resin material having a low thermal conductivity having both functions of heating by the heater 20 and heat blocking, the heater 20 is used for magnet adsorption. The thermal resistance up to the steel plate 16 is increased, and the heat load on the interior can be reduced. Therefore, substantially the same effect as in the case of the first embodiment can be obtained, but furthermore, since the front surface portion 15 is composed of two parts of the magnet adsorption steel plate 16 and the heater heating resin 23, the cost can be reduced. Can do.

[Embodiment 3]
FIG. 6 is a cross-sectional view of the main parts of the left and right doors and the partition of the refrigerator compartment of the refrigerator-freezer according to Embodiment 3 of the present invention. The same parts as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In this embodiment, in Embodiment 2, two heaters 20 are provided in the recesses of the heater heating resin 23 of the partition 10, and between the magnet adsorption steel plate 16 and the heater heating resin 23, A heater fixing resin 24 is provided.

  In the present embodiment, since two heaters 20 are provided, a space for attaching the heater 20 to the heater heating resin 23 with aluminum tape is reduced, and fixing becomes difficult. For this reason, two concave grooves 24a are provided in the vertical direction on the outer side of the heater fixing resin 24 (the side in contact with the heater heating resin 23), and the heaters 20 are respectively inserted and fixed in the concave grooves 24a. 20 is in contact with the heater heating resin 23. In this case, the member for fixing the heater 20 is not limited to the heater fixing resin 24, and any material having a low thermal conductivity may be used. A material having a lower thermal conductivity reduces the heat load on the inside of the warehouse. Can do.

  According to the present embodiment, substantially the same effect as in the second embodiment can be obtained, but furthermore, since two heaters 20 are provided, the heat generation density can be reduced. The temperature distribution on the surface of the surface portion 15 can be made uniform, whereby the input power to the heater 20 can be minimized. In the partition 10 of the first embodiment, two heaters 20 may be provided and fixed with the heater fixing resin 24.

[Embodiment 4]
FIG. 7: is sectional drawing of the principal part of the door on either side of the refrigerator compartment of the refrigerator-freezer which concerns on Embodiment 4 of this invention, and a partition. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, the gasket 5 on the inner side of the opposite end of the free ends of the left and right doors 2 and 3 protrudes toward the center along the vertical direction, and has a cross section having an air layer in the internal sealed space. A substantially U-shaped bulging portion 25 is provided, and when the doors 2 and 3 are closed, the tip portions of the bulging portions 25 are in contact with each other.

  In addition, the front surface portion 15 of the partition 10 is provided with a front steel plate 26 that serves as both a front exposed portion and a magnet attracting portion that are flat across the entire width and exposed outside the storage. In addition, the steel plate 16 for magnet adsorption, the steel plate 17 for heater heating (or the heater heating resin 23), the heater 20, etc. provided in the front surface part 15 in Embodiments 1-3 are not provided. Although the figure shows a case where the bulging portion 25 is formed in a substantially U-shaped cross section, the cross sectional shape may be an ellipse or a rectangle, for example, and has a sealed space where an air layer exists. If it is.

In the present embodiment, when both doors 2 and 3 are closed, the bulging portion 25 closes the space where the front steel plate 26 of the partition 10 is in contact with the outside air, and the bulging portion 25 is interposed between the front steel plate 26 and the outside air. A sealed space is formed. The air layer in this sealed space has good heat insulation properties, and the surface temperature of the bulging portion 25 that contacts the outside air is kept high, so that the temperature of the front steel plate 26 is lowered and condensation is prevented from forming on the front exposed portion. be able to.
Moreover, according to this Embodiment, since the structure of the partition 10 is simple, it can reduce cost, Furthermore, since the heater is not provided, running cost can be reduced.

[Embodiment 5]
FIG. 8: is sectional drawing of the principal part of the right-and-left door and partition of a refrigerator-freezer concerning Embodiment 5 of this invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In this embodiment, in the refrigerator 1 according to the first embodiment, a part of the free end side of the gasket 5 provided at the inner peripheral edge of the left and right doors 2 and 3 is cut out. The free ends of the gasket holding portions of the plates 2b and 3b are extended to the inner side, and the free ends of the outer plates 2a and 3a of the doors 2 and 3 are extended to the inner side to extend to the inner plates 2b and 3b. When the doors 2 and 3 are closed and the doors 2 and 3 are closed, the outer plates 2 a and 3 a are configured to be close to the front steel plate 26 of the partition 10. The partition 10 has substantially the same structure as that of the fourth embodiment (FIG. 7), but two heaters 20 are provided inside the front steel plate 26. In this case, the two heaters 20 may be fixed by the heater fixing resin 24 of the third embodiment.

According to the present embodiment configured as described above, since the front steel plate 26 of the partition 10 is heated by the two heaters 20, condensation may occur even if the front exposed portion is in contact with the outside air. Absent.
Further, the air layer in the gasket 5 has low thermal conductivity and heat is not easily transmitted. However, by removing a part of this air layer, the heat of the outside air is efficiently transmitted from the outer plates 2a and 3b to the front steel plate 26. The power supplied to the heater 20 can be reduced.

  Further, the heat of the outside air is transmitted from the outer plates 2a and 3a of the doors 2 and 3 to the front steel plate 26, and the surrounding air is also warmed, so that the temperature of the front steel plate 26 rises. Supply power can be further reduced.

FIG. 9 is a cross-sectional view showing another example of the partition according to the present embodiment.
In this example, both end portions of the front steel plate 26 of the partition 10 are bent inwardly in a hairpin shape so as to contact the inner wall surface of the resin case 21. By configuring in this way, the contact area of the front steel plate 26 to the resin case 21 is reduced, so that the contact thermal resistance is increased and the heat flow entering the chamber from the heater 20 is reduced, so the power supplied to the heater 20 is reduced. Further reduction can be achieved. Moreover, since both ends are bent in a hairpin shape, the strength of the front steel plate 26 can be increased. In addition, you may bend the both ends of the steel plate 16 for magnet adsorption | suction of Embodiment 1-3 to the inner side in the shape of a hairpin.

  Although the embodiments of the present invention have been described above, these may be implemented singly or in appropriate combinations.

In the above description, the case where the present invention is applied to the double door of the refrigerator compartment of the refrigerator-freezer is shown. However, the present invention is not limited to this. The invention can be implemented.
Moreover, although the case where the partition was provided in the left door of the double doors is shown, the present invention can be similarly implemented in a refrigerator-freezer in which the partition is provided in the right door.
Furthermore, although the case where this invention was implemented to the illustrated refrigerator-freezer was shown, it is not limited to this, If it has a double door type door, this invention is implemented also to the refrigerator-freezer of another structure be able to.

It is a perspective view of the refrigerator-freezer which concerns on Embodiment 1 of this invention. It is an enlarged view of the upper surface principal part of FIG. It is sectional drawing of the principal part of the right-and-left door of FIG. 2, and a partition. It is an enlarged view of the partition body of FIG. It is sectional drawing of the right-and-left door of the refrigerator compartment of the refrigerator-freezer which concerns on Embodiment 2 of this invention, and the principal part of a partition. It is sectional drawing of the right-and-left door of the refrigerator compartment of the refrigerator-freezer which concerns on Embodiment 3 of this invention, and the principal part of a partition. It is sectional drawing of the right-and-left door of the refrigerator compartment of the refrigerator-freezer which concerns on Embodiment 4 of this invention, and the principal part of a partition. It is sectional drawing of the right-and-left door of the refrigerator compartment of the refrigerator-freezer which concerns on Embodiment 5 of this invention, and the principal part of a partition. It is sectional drawing which shows the other example of the partition of FIG.

Explanation of symbols

  1 Refrigerator, 2 Left door, 3 Right door, 2a, 3a Outer plate, 2b, 3b Inner plate, 4 Magnet, 5 Gasket, 10 Partition, 11 Support arm, 13 Guide groove, 14 Guide pin, 15 Front part, 16 Magnet adsorption steel plate, 17 Heater heating steel plate, 18 Heat blocking resin, 20 Heater, 21 Resin case, 22 Heat insulating material, 23 Heater heating resin, 24 Heater fixing resin, 25 Swelling part, 26 Front steel plate.

Claims (5)

A gasket having a magnet is provided on the inner peripheral edge of the cabinet, and has a double door type door device that opens and closes the opening, and is provided to be rotatable in the vertical direction inside the warehouse at the free end of one door of the door device. With a partition,
The partition is formed of a magnet-adsorbing steel plate provided with magnet adsorbing portions exposed to the outside of the chamber on both sides of a recess opening to the outside of the chamber, and a recess provided in the magnet-adsorbing steel plate that is open on the inside of the chamber and provided with a heater inside. A steel plate for heater heating having a U-shaped cross section that is housed inside and exposed to the outside of the warehouse, and a front portion made of a heat blocking resin interposed between the steel plate for magnet adsorption and the steel plate for heater heating; A refrigerator-freezer comprising: a resin case having a U-shaped cross-section covering the inside of the refrigerator; and a heat insulating material interposed between the resin case and the front surface portion. A gasket having a magnet is provided on the inner peripheral edge of the cabinet, and has a double door type door device that opens and closes the opening, and is provided to be rotatable in the vertical direction inside the warehouse at the free end of one door of the door device. With a partition,
The partition body includes a magnet-adsorbing steel plate provided with magnet adsorbing portions exposed to the outside of the chamber on both sides of a concave portion opened to the outside of the cabinet, and a heater provided in the interior of the magnet-adsorbing steel plate. A front portion made of a heater heating resin having a U-shaped cross section that is housed in a recess and the front surface is exposed to the outside of the chamber, a U-shaped resin case that covers the inner side of the chamber, and the resin case and the front portion A refrigerator-freezer comprising a heat insulating material interposed therebetween.   The refrigerator-freezer according to claim 1 or 2, wherein the heater is attached to the inside of the heater heating steel plate or heater heating resin with an aluminum tape.   Two heaters are provided inside the heater heating steel plate or heater heating resin, and these heaters are interposed between the magnet adsorption steel plate and the heater heating steel plate or heater heating resin. 3. The refrigerator-freezer according to claim 1 or 2, wherein the heater is inserted into two concave grooves provided in the vertical direction, and the heater is brought into contact with the heater heating steel plate or the heater heating resin. The refrigerator-freezer according to any one of claims 1 to 4 , wherein both ends of the partition that contact the resin case of the magnet adsorption steel plate or the front steel plate are folded back into a hairpin shape.

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