JP2018004214A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that prevents dew condensation in a gap between double-door type right and left doors.SOLUTION: In a refrigerator, a planar swirl wound induction coil 154 is disposed in a vertical partition body 150 for sealing a gap between a double-door type right and left doors 141, 142. A heating plate 155 is installed in a front of the induction coil 154 to heat the heating plate 155 with induction heating and sublimate dew condensation water condensed in the gap between the right and left doors 141, 142.SELECTED DRAWING: Figure 4

Description

  Embodiments of the present invention relate to refrigerators.

  Some refrigerators of large refrigerators are provided with double doors. When the left and right doors are closed, there is a vertical partition for sealing the gap between the left and right doors to prevent cold air from escaping from the refrigerator compartment and preventing hot air from entering the refrigerator compartment from outside the refrigerator. Is provided.

  In the part that forms this gap, condensation is likely to occur due to the difference between the internal temperature and the outside temperature, so a linear heater is conventionally provided in the vertical partition, and condensation is prevented by heating this vertical partition. doing.

JP 2009-250602 A

  As described above, a linear heater is provided in the vertical partition, and heating is performed by flowing electricity to the heater. There was a problem that may occur.

  Then, embodiment of this invention aims at providing the refrigerator which prevents dew condensation in the clearance gap between the double doors type right and left doors.

  An embodiment of the present invention includes a storage chamber, an opening on the front surface of the storage chamber, and a left and right double door that is pivotally supported by hinge shafts on both sides of the opening and closes the opening. A vertical partition that is attached to the opposite shaft support side of one of the left and right doors, rotates according to the door opening and closing operation, and seals the gap between the left and right doors when the door is closed, and the metal facing the gap It is a refrigerator having an induction heating means for induction heating a portion with an induction coil, and a control unit for controlling the induction heating means.

The front view of the refrigerator of Embodiment 1 of this invention. The longitudinal cross-sectional view of a refrigerator. The perspective view of the refrigerator of the state which opened the right-and-left door. The enlarged plan view of the state which closed the right-and-left door. The front view of a vertical partition body main body. The refrigerator block diagram. The front view of the vertical partition body main body of Embodiment 2. FIG. The front view of the vertical partition body main body of Embodiment 3. FIG. The front view of the vertical partition body main body of Embodiment 6. FIG. The expansion lateral view of the part which the right and left doors of Embodiment 7 meet.

  Hereinafter, the refrigerator 10 of one Embodiment of this invention is demonstrated with reference to drawings.

Embodiment 1

  Hereinafter, the refrigerator 10 of Embodiment 1 of this invention is demonstrated with reference to FIGS.

(1) Structure of the refrigerator 10 The structure of the refrigerator 10 is demonstrated based on FIGS. 1-3. The cabinet 12 of the refrigerator 10 is a heat insulation box, and is formed of an inner box and an outer box, and a heat insulating material is filled between the inner box and the outer box. As shown in FIGS. 1 and 2, the cabinet 12 has a refrigerator compartment 14, a vegetable compartment 16, a small freezer compartment 18, and a freezer compartment 20 in order from the top, and an ice making room beside the small freezer compartment 18. 21 is provided. A horizontal heat insulating partition 36 is provided between the vegetable compartment 16, the small freezer compartment 18 and the ice making compartment 21. The refrigerator compartment 14 and the vegetable compartment 16 are partitioned by a horizontal partition 38.

  As shown in FIGS. 2 and 3, a plurality of glass shelves 40 are provided horizontally in the refrigerator compartment 14, and a chilled chamber 42 is provided in the lower part. On the left side of the chilled chamber 42, a tank 68 for supplying ice-making water is provided.

  As shown in FIG. 2 and FIG. 3, double doors 141 and 142 of double doors are provided at the front opening of the refrigerator compartment 14. A hinge shaft is provided at the left end of the left door 141 and is rotatably supported by a hinge member 143 provided at the front left end of the ceiling surface of the cabinet 12. A hinge shaft is provided at the right end of the right door 142 and is rotatably supported by a hinge member 144 provided at the front right end of the ceiling surface of the cabinet 12. A vertical partition 150 is rotatably provided on the opposite side of the left door 141 opposite to the hinge member 143, that is, on the rear side of the right side of the left door 141. The vertical partition 150 will be described in detail later.

  A gasket 145 is provided in a frame shape on the outer peripheral portion of the rear surface of the left door 141. A gasket 146 is also provided in a frame shape on the rear outer peripheral portion of the right door 142. A magnet 148 is provided inside the gaskets 145 and 146 (see FIG. 4).

  A plurality of door pockets 44 are provided on the rear surfaces of the left and right doors 141 and 142. An operation unit 56 having an operation switch is provided on the front surface of the left door 141. The operation unit 56 is provided with an outside air temperature sensor 58 and an outside humidity sensor 60 for detecting the outside air temperature around the refrigerator 10 and the outside outside humidity.

  A door switch 62 is provided at the lower part of the left door 141. When this door switch 62 is pressed, the solenoid door pressing portion 64 at the center of the front end of the ceiling of the cabinet 12 pushes the left door 141 from the rear. The left door 141 is opened. A door switch 62 is also provided below the right door 142. When the door switch 62 is pressed, the door pressing portion 64 presses the rear surface of the right door 142, and the right door 142 is opened.

  The vegetable compartment 16 is provided with a drawer-type vegetable door 16a, and the small freezer compartment 18, the freezer compartment 20 and the ice making compartment 21 are provided with drawer-type doors 18a, 20a and 21a, respectively. In the vegetable compartment 16, a drawer-type vegetable container 46 is provided. An ice making device 66 for making ice using an ice tray is provided in the ice making chamber 21, and water for ice making is supplied from a tank 68 disposed inside the refrigerator compartment 14.

  A refrigeration evaporator (hereinafter referred to as “R EVA”) 28 is provided from the lower rear surface of the refrigerator compartment 14 to the rear surface of the vegetable compartment 16, and a refrigeration blower (hereinafter referred to as “R fan”) 30 is provided below the evaporator. Is provided. The R EVA 28 and the R fan 30 are arranged in an R EVA chamber 27 that is a cooling chamber surrounded by an EVA cover 48.

  A cold air passage 50 extends upward from the R-evaporation chamber 27 along the back surface of the refrigerating chamber 14, and a plurality of outlets 52 are provided in the cold air passage 50, and cold air is blown out from the outlets 52 to the refrigerating chamber 14. . Further, a blow-out port 54 is also provided on the back surface of the chilled chamber 42 so that cold air is blown out into the chilled chamber 42. Furthermore, an R sensor 29 that detects the internal temperature of the refrigerator compartment 14 is provided on the back of the refrigerator compartment 14.

  A freezing evaporator (hereinafter referred to as “F-eva”) 32 is provided in the F-evaporating chamber 31 from the rear surface of the small freezing chamber 18 and the ice making chamber 21 to the rear surface of the freezing chamber 20. (Hereinafter referred to as “F fan”) 34 is provided. A defrost heater (not shown) is provided below the F EVA 32. An F sensor 35 that detects the internal temperature of the freezer compartment 20 is provided on the back surface of the freezer compartment 20.

  A machine room 22 is provided at the bottom of the rear surface of the cabinet 12, and a compressor 24 and the like constituting the refrigeration cycle are placed thereon. A control plate 26 is provided on the upper rear surface of the machine room 22.

(2) Vertical partition 150
Next, the vertical partition 150 will be described with reference to FIGS. 4 and 5. The vertical partition 150 rotates in accordance with the door opening / closing operation of the left and right doors 141 and 142, and seals the gap 151 formed between the left door 141 and the right door 142 when the left and right doors 141 and 142 are closed. To do. The gasket 145 provided on the left door 141 and the gasket 146 provided on the right door 142 are attracted to the heating plate 155 by the magnet 148 in the closed state. This can block cold air.

  The vertical partition 150 is a vertically long rectangular parallelepiped, and is pivotally supported by a rotating shaft 147 so as to be rotatable on the rear surface of the left door 141 on the side opposite to the shaft. In the closed state, the gasket 145 and the gasket 146 on the rear surfaces of the left door 141 and the right door 142 are pressed by a torsion spring (not shown) to maintain the sealed state, and in the opened state, 90 ° with respect to the left door 141. Rotate and retract so that it can be opened.

  The vertical partition 150 is composed of a partition body main body 152 and a heating plate 155. The partition body 152 has a rectangular parallelepiped box shape, and is formed of a synthetic resin in which an upper surface, a lower surface, left and right side surfaces, and a rear surface are integrally formed. A rectangular parallelepiped heat insulating member 153 is housed inside the partition body main body 152. An induction coil 154 is disposed on the front surface of the heat insulating member 153. A heating plate 155 is attached in front of the induction coil 154. The induction coil 154 and the heating plate 155 constitute an induction heating device (hereinafter referred to as “IH device”) 156.

  The heating plate 155 is made of a magnetic metal such as iron or stainless steel and has a vertically long rectangle. An eddy current is generated by a magnetic field from the induction coil 154, and the heating plate 155 is heated when the eddy current flows. Is done.

  The induction coil 154 is formed by winding a strand 158 formed by twisting a plurality of metal wires around a planar spiral. This winding method will be described with reference to FIG. FIG. 5 is a front view of the partition body 152 of the vertical partition 150. The strand 158 of the induction coil 154 is wound around the inside of the partition main body 152 in a clockwise direction and in a plane spiral in parallel with the upper side, the lower side, and the left and right sides of the partition main body 152. . In the drawings, the number of turns is reduced in order to make the winding state easy to understand. Thus, by forming the induction coil 154 by winding the element wire 158 into a planar spiral, the magnetic field from the induction coil 154 generates an eddy current in the heating plate 155 and heats it.

(3) Electrical configuration of refrigerator 10 Next, the electrical configuration of the refrigerator 10 will be described with reference to FIG. A control unit 70 that controls the refrigerator 10 and an inverter circuit 72 that controls the IH device 156 are provided inside the control plate 26. An inverter circuit 72 is connected to the control unit 70, and the operation unit 56, the R sensor 29, the F sensor 35, the outside air temperature sensor 58, the outside humidity sensor 60, the R fan 30, the F fan 34, and the motor of the compressor 24. The ice making device 66, the door switch 62, and the door pressing portion 64 are connected.

  The inverter circuit 72 outputs a high frequency current (for example, 20 to 30 kHz) to the IH device 156 by inverter control, and generates a magnetic field from the induction coil 154. The IH device 156 generates a magnetic field by the high frequency current from the inverter circuit 72, and an eddy current flows through the heating plate 155 due to this magnetic field, heat is generated based on the resistance of the heating plate 155, and the heating plate 155 is heated. The

  The control unit 70 and the inverter circuit 72 rectify household commercial power, and are driven by the rectified DC Vance power.

  The control unit 70 controls the compressor 24 by the R sensor 29, the F sensor 35, the outside air temperature sensor 58 and the outside humidity sensor 60, and sets the inside temperature of the refrigeration compartment such as the refrigerator compartment 14 and the freezer compartment such as the freezer compartment 20. Control each within the set temperature. Further, the control unit 70 controls the inverter circuit 72 based on the outside air temperature and the outside humidity from the outside air temperature sensor 58 and the outside humidity sensor 60 and drives the IH device 156 to heat the heating plate 155. For example, when the outside air temperature is 30 ° C. or more or the outside humidity is 60% or more, the inverter circuit 72 is controlled to drive the IH device 156 to heat the heating plate 155. The controller 70 drives the IH device 156 to heat the heating plate 155 when the inside temperature detected by the R sensor 29 or the F sensor 35 is lower than the set temperature.

  Further, the energization time of the IH device 156 is continued when a specific high-humidity environment condition (for example, 60% or more) continues, with the voltage suppressed, and when the humidity becomes low (for example, less than 60%). The energization is terminated.

(4) Effect According to the present embodiment, the heating plate 155 can be rapidly heated by causing the inverter circuit 72 to pass a high-frequency current through the induction coil 154. Then, heat can be transmitted and heated without unevenness by the heat generated by the heating plate 155 itself. Even under high humidity conditions (60% or more), the condensed water condensed in the vertical partition 150 and the gap 151 can be heated rapidly to prevent dripping and the like. Thus, it is possible to prevent the influence on the inside of the cabinet and the waste of electric power, such as heating of the linear heater by simple energization.

  In addition, since the heating plate 155 other than the magnetic material is formed of a synthetic resin other than the magnetic material and only the heating plate 155 is locally heated, the thermal influence on the peripheral structure and the like can be suppressed.

  In addition, when the control unit 70 determines that the outside air temperature or the outside humidity is high based on the detected temperature of the outside air temperature sensor 58 or the outside humidity sensor 60 or the detected humidity, the IH device 156 is driven, and the heating plate 155 is rapidly turned on. The condensed water condensed on the heating plate 155 can be sublimated only by energization (for example, 20 to 50 w as electric power) for a short time (for example, 1 to 10 minutes). Condensed water condensing on the surface can also be sublimated. Thereby, dew condensation can be prevented by energizing the heating plate 155 of the vertical partition 150 only under environmental conditions that require heating of the heating plate 155.

Embodiment 2

  Next, the refrigerator 10 of Embodiment 2 of this invention is demonstrated with reference to FIG. In the first embodiment, the induction coil 154 wound in a planar spiral is wound from the top to the bottom of the vertical partition 150, but in the present embodiment, it is wound in a planar spiral as shown in FIG. The induction coil 154 is divided into an upper part 154-1 and a lower part 154-2. However, the induction coils 154-1 and 154-2 are composed of a single wire 158.

  In this embodiment, heating can be performed at different temperatures between the upper and lower portions of the heating plate 155 of the vertical partition 150. For example, if the number of turns n1 of the upper induction coil 154-1 is greater than the number of turns n2 of the lower induction coil 154-2, the upper heating plate 155 can be heated to a higher temperature. The reason for doing this is that the temperature inside the portion where the cold air blown out from the outlet 54 of the refrigerator compartment 14 directly hits is lowered, and the temperature inside the portion where the cold air flows indirectly is difficult to lower, so the vertical partition 150 This is because the surface temperature in the vertical direction is not constant.

  Further, in this embodiment, the upper induction coil 154-1 and the lower induction coil 154-2 are formed by a single wire 158, but the upper induction coil 154-1 and the lower induction are not limited thereto. The coils 154-2 may be formed completely independently and each may be heated. In this case, for example, it is possible to heat only the upper induction coil 154-1 and not to heat the lower induction coil 154-2.

Embodiment 3

  Next, the refrigerator 10 of Embodiment 3 of this invention is demonstrated with reference to FIG. In the refrigerator compartment 14, when cold air is blown out from the upper outlet 52 and sucked into the bottom of the refrigerator compartment 14, the surface temperatures of the upper and lower parts of the vertical partition 150 are lowered. Therefore, in the present embodiment, induction coils 154 -A, 154 -B, and 154 -C wound in a planar spiral are arranged on the upper, middle, and lower portions of the vertical partition 150. Then, the number of turns of the central induction coil 154 -B is made smaller than the number of turns of the upper and lower induction coils 154 -A and 154 -C. Thereby, the upper part and lower part of the heating plate 155 are heated rather than a center part, and dew condensation can be appropriately sublimated.

  In some cases, the number of turns of the induction coil 154-B at the center may be increased. This is because when the left and right doors 141 and 142 of the refrigerator 10 are opened and closed for a long period of time, the door may be deformed, for example, warped in the longitudinal direction.

Embodiment 4

  Next, a fourth embodiment of the present invention will be described. In the above embodiment, the outside air temperature sensor 58 and the outside humidity sensor 60 are provided on the operation unit 56 on the front surface of the left door 141. However, in this embodiment, the outside air temperature sensor 58 and the outside humidity sensor 60 are provided on the heating plate 155 of the vertical partition 150 instead. . Thereby, since the outside air temperature and the outside humidity near the heating plate 155 are directly detected, the heating plate 155 can be heated at a more appropriate temperature.

  In the above-described embodiment, both the outside air temperature sensor 58 and the outside humidity sensor 60 are provided, but instead of this, either one is provided, and the IH device 156 is controlled based on the detection result of either one. Good.

Embodiment 5

  Next, a fifth embodiment of the present invention will be described. In the above embodiment, the induction coil 154 is disposed in contact with the heating plate 155, but instead, the induction coil 154 is disposed with a slight gap between the induction coil 154 and the heating plate 155. Thereby, the magnetic flux from the induction coil 154 changes, and the eddy current flowing through the heating plate 155 can be adjusted.

Embodiment 6

  Next, a sixth embodiment of the present invention will be described with reference to FIG. In the above embodiment, the pitch when the wire 158 constituting the induction coil 154 is wound is the same, but in this embodiment, the wire is wound at a different pitch. For example, as shown in FIG. 9, in the vertical direction Y of the vertical partition 150, the winding pitch of the wire 158 is shortened as it goes up and down, and in the horizontal direction X, the wire as it goes left and right The pitch of 158 is shortened. That is, as shown in the graph, y1> y2> y3 in the vertical direction Y, and the temperature T of the heating plate 155 increases as it goes up and down. In the horizontal direction X, x1> x2> x3, and the temperature T of the heating plate 155 increases as it goes to the left and right. Thereby, it can comprise so that temperature may become so high that it goes to the circumference | surroundings of the heating plate 155 of the vertical partition 150, and dew condensation water can be sublimated reliably.

Embodiment 7

  Next, a seventh embodiment of the present invention will be described with reference to FIG. In the said embodiment, the induction coil 154 was provided in the vertical partition 150, and the IH apparatus 156 was comprised by making the heating plate 15 metal. Instead of this, in the present embodiment, as shown in FIG. 10, an induction coil 154 is provided in the left side surface of the right door 142 on the side opposite to the shaft, and the first heating plate made of metal is provided on the left side surface of the right door 142. 155b is provided, and a metal second heating plate 155a is provided on the right side surface of the left door 141. Then, by passing a high frequency current through the induction coil 154, the first heating plate 155b on the left side of the right door 142 and the second heating plate 155a on the right side of the left door 141 are heated, and the gap 151 is formed. Heat. Thereby, the surface facing the gap 151 can be heated to sublimate the condensed water.

  As a modified example of the seventh embodiment, an induction coil 154 may be provided in the thickness portion in the left door 141.

Example of change

  Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Refrigerator, 12 ... Cabinet, 14 ... Cold room, 70 ... Control part, 72 ... Inverter circuit, 141 ... Left door, 142 ... Right door, 150 ... · Vertical partition, 151 · · · gap, 152 · · · partition body, 153 · · · insulation member, 154 · · · induction coil, 155 · · · heating plate, 156 · · · heating induction device, 158 · ..Wire

Claims (9)

A storage room;
An opening in front of the storage chamber;
A left and right door with double doors that is pivotally supported by a hinge shaft on both sides of the opening, and closes the opening;
A vertical partition that is attached to the opposite shaft support side of one door of the left and right doors, rotates according to the door opening and closing operation, and seals the gap between the left and right doors when the door is closed,
Induction heating means for induction heating the metal portion facing the gap with an induction coil;
A control unit for controlling the induction heating means;
Refrigerator. The induction heating means is provided on the vertical partition.
The refrigerator according to claim 1. The induction heating means includes
An iron-based or stainless-based metal plate provided at the front of the vertical partition;
In the vertical partition, the induction coil wound around a planar spiral and the portion wound around the planar spiral is opposed to the metal plate,
The refrigerator according to claim 2. A plurality of the induction coils wound in a planar spiral are provided inside the vertical partition,
The refrigerator according to claim 3. The number of turns of the plurality of sets of induction coils is different,
The refrigerator according to claim 4. The induction coil wound in a planar spiral is respectively provided in the upper part, the center part, and the lower part in the vertical partition body,
The number of turns of the induction coil in the upper part and the lower part is larger than the number of turns of the induction coil in the central part,
The refrigerator according to claim 4. The vertical partition has a temperature sensor or a humidity sensor,
The control unit controls the induction heating unit based on the temperature detected by the temperature sensor or the humidity detected by the humidity sensor.
The refrigerator according to any one of claims 1 to 6. The spacing between the strands of the induction coil wound around the planar spiral is different from the strands,
The refrigerator according to any one of claims 3 to 7. The induction heating means includes
The induction coil which is one door of the left and right doors and provided in a thickness portion in the one door where the left and right doors face each other;
A metal plate provided in a thickness portion of the one door;
A metal plate that is the other door of the left and right doors and that is provided in a thickness portion of the other door that the left and right doors face each other;
The refrigerator according to claim 1.

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