JP2012189304A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator having superior static resistance at low cost.SOLUTION: The refrigerator includes: a grounded refrigerator body outer case 1; a refrigeration compartment door 3 openably installed to the refrigerator body outer case 1; a refrigeration compartment hinge 5 for openably supporting the refrigeration compartment door 3; a refrigerator operation panel 2, which is mounted on a front surface of the refrigeration compartment door 3, and in which a refrigerator operating board is installed; a ground wire 8, which is connected with the refrigeration compartment hinge 5, and which is led on the backside of a sheet metal composing the refrigeration compartment door 3; and a conductive tape 9 for attaching the ground wire 8 on the backside of the sheet metal of the refrigeration compartment door 3 to be connected with the sheet metal.

Description

  The present invention relates to an electric refrigerator.

  Conventionally, the refrigerator door is generally electrically insulated from the refrigerator body. Patent Document 1 describes a method of electrically connecting a refrigerator door and its supporting fixing hinge with a conductive screw in order to prevent static electricity from being applied to the refrigerator control board and malfunctioning of the refrigerator. Yes.

Japanese Utility Model Publication No. 63-116892

  Since the conventional refrigerator door is not electrically connected to the refrigerator body, when a person who is resistant to electricity, such as a person, touches the refrigerator door, it is easy for electricity to flow through the refrigerator operation board and the refrigerator operation board to the refrigerator control board. And electricity flows. Since static electricity is generally several kV to several tens of kV, the microcomputer of the refrigerator control board or the refrigerator operation panel and other circuit components may malfunction.

  In addition, the method of electrically connecting the refrigerator compartment door hinge portion and the refrigerator compartment door portion to connect the refrigerator compartment door portion to the ground is because the external noise such as static electricity goes out to the ground where the electricity easily flows. Although noise is not applied to the operation board and the refrigerator control board, the problem of malfunction is solved, but there are problems that the number of parts increases and the processing of the door sheet metal becomes complicated, resulting in an increase in cost.

  The present invention has been made in view of the above, and an object of the present invention is to provide a refrigerator having excellent electrostatic strength at low cost.

  In order to solve the above-described problems and achieve the object, a refrigerator according to the present invention includes a grounded refrigerator body outer box, a refrigerator door that is openably and detachably attached to the refrigerator body outer box, and the refrigerator room. A hinge that supports the door so that it can be opened and closed, a refrigerator operation panel that is mounted on the front surface of the refrigerator compartment door and that has a refrigerator operation board attached thereto, and the hinge that supports the refrigerator door to which the refrigerator operation panel is attached. A grounding wire led on the back surface of the sheet metal constituting the refrigerator door; and a conductive tape for attaching the grounding wire to the back surface of the sheet metal of the refrigerator door and connecting to the sheet metal. And

  According to this invention, there exists an effect that the refrigerator excellent in static electricity tolerance can be provided cheaply.

Drawing 1 is a figure showing an example of the composition of the refrigerator concerning an embodiment. FIG. 2 is a diagram illustrating an example of the configuration of the refrigerator compartment door. FIG. 3 is a view of the sheet metal covering the design surface of the refrigerator door as seen from the back side. FIG. 4 is a diagram illustrating an example of the appearance of the refrigerator operation panel. FIG. 5 is a diagram illustrating an example of a circuit block diagram of the refrigerator operation board and the refrigerator control board. FIG. 6 is a diagram illustrating an example of an electrostatic noise propagation path in the refrigerator according to the embodiment.

  Embodiments of a refrigerator according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a diagram illustrating an example of a configuration of a refrigerator according to the present embodiment. FIG. 2 is a diagram illustrating an example of the configuration of the refrigerator compartment door. As shown in FIGS. 1 and 2, the refrigerator according to the present embodiment includes a refrigerator main body outer box 1, and a pair of left and right refrigerator compartment doors 3 that are openably and closably attached to the refrigerator main body outer box 1. A pair of refrigerating room hinges 5 that respectively support the pair of refrigerating room doors 3 so as to be openable and closable; A refrigerator operation panel 2 attached to the front surface of the refrigerator compartment door 3, a refrigerator control board 6 connected to the refrigerator operation panel 2 via the communication line 12 and attached to the back of the refrigerator, and controlling the entire refrigerator; A refrigerator compartment panel 7 provided at the free end of the refrigerator compartment door 3 to which the refrigerator operation panel 2 is mounted, and for partitioning the refrigerator compartment door 3 with the pair of refrigerator compartment doors 3 closed; Refrigerated room fitted with The ground wire 8 connected to the refrigerator compartment hinge 5 that supports 3 and led through the inside of the refrigerator compartment door partition 7 to the back surface of the sheet metal of the refrigerator compartment door 3, and the ground wire 8 is connected to the refrigerator compartment door. The conductive tape 9 is attached to the back surface of the sheet metal 3 and connected to the sheet metal.

  The refrigerator main body outer box 1 is made of sheet metal or the like, and is connected to the ground during normal operation. The refrigerator compartment door 3 is made of, for example, a plastic inner box and a heat insulating material such as polyurethane and a vacuum heat insulating material, and a design surface is covered with a sheet metal. Note that this embodiment can also be applied to doors other than the double-folded refrigerator compartment door.

  The refrigerator compartment hinge 5 is electrically connected to the refrigerator main body outer box 1. The refrigerator compartment door stopper 4 is electrically connected to the refrigerator main body outer box 1.

  The refrigerator operation panel 2 is an operation panel for performing various settings such as setting of the internal temperature. FIG. 4 is a diagram illustrating an example of the appearance of the refrigerator operation panel 2. As shown in FIG. 4, the refrigerator operation panel 2 includes a switch 17 for a user to operate, and a display unit 15 that displays, for example, the current temperature setting of each room of the refrigerator. The refrigerator operation panel 2 is fitted with the refrigerator operation board 16 shown in FIG. 5, and the microcomputer 13 is mounted on the refrigerator operation board 16. Here, FIG. 5 is a diagram illustrating an example of a circuit block diagram of the refrigerator operation board 16 and the refrigerator control board 6. The microcomputer 13 communicates with the microcomputer 14 mounted on the refrigerator control board 6 via the communication line 12 and can perform various settings such as temperature setting of each refrigerator room and ice making mode. The damper 20 is controlled by the microcomputer 13. In FIG. 5, information input and set by the user operating the switch 17 is transmitted from the microcomputer 13 constituting the refrigerator operation board 16 to the microcomputer 14 constituting the refrigerator control board 6. The microcomputer 14 controls the compressor 19 based on the received information.

  The refrigerator compartment door partition 7 is provided at the free end of the refrigerator compartment door 3 to which the refrigerator operation panel 2 is attached, that is, at the opposite end of the refrigerator compartment door 3 facing the refrigerator compartment door 3. ing. The refrigerator compartment door partitioning portion 7 extends in the vertical direction at the free end and partitions the refrigerator compartment door 3. Moreover, it is possible to pass wiring etc. up and down in the refrigerator compartment door partition part 7. FIG. As shown in FIG. 2, a ground wire 8 is wired in the refrigerator compartment door partition 7. The ground wire 8 is secured to the refrigerator compartment hinge 5 that supports the refrigerator compartment door 3, for example, by screws (not shown), and is electrically connected to the refrigerator main body outer box 1. The ground wire 8 is routed from the refrigerator compartment hinge 5 along the upper end surface of the refrigerator compartment door 3, and then passed through the refrigerator compartment door partition 7. It guide | induces to the back surface of the sheet metal of the refrigerator compartment door 3, and is affixed so that it may conduct | electrically_connect with the said sheet metal with the conductive tape 9 on the back surface of this sheet metal. Here, the back surface of the sheet metal is a surface inside the refrigerator of the sheet metal, and is hereinafter referred to as a refrigerator compartment door sheet metal back surface.

  FIG. 3 is a view of the sheet metal covering the design surface of the refrigerator compartment door 3 as seen from the back side. For example, one end of the ground wire 8 is attached to the refrigerating room door sheet metal back surface 10 with a conductive tape 9 in the vicinity of the refrigerator operation panel 2. The conductive tape 9 is, for example, an aluminum tape. Since the refrigerator compartment door sheet metal back surface 10 is sealed with a heat insulating material such as polyurethane for heat insulation from the outside, the electrical connection is stably maintained. The refrigerator operation panel 2 is in contact with the sheet metal. The ground wire 8 having one end affixed to the refrigerator compartment door sheet metal back surface 10 with the conductive tape 9 is guided into the refrigerator compartment door partition 7 through a hole (not shown) provided in the upper end portion of the sheet metal, Furthermore, it extends to the refrigerator compartment hinge 5 and is screwed to the refrigerator compartment hinge 5. In addition, the dew condensation prevention heater wire 11 is also shown on the refrigerator compartment door sheet metal back surface 10. Condensation prevention heater wire 11 passes through refrigerator compartment door partition 7, similarly to ground wire 8.

  Next, the operation of the present embodiment will be described with reference to FIG. FIG. 6 is a diagram illustrating an example of an electrostatic noise propagation path in the refrigerator of the present embodiment. When the user touches the refrigerator operation panel 2, the static electricity noise released from the human body is connected to the refrigerator compartment door sheet metal back surface 10 of the refrigerator compartment door 3 to which the refrigerator operation panel 2 is attached as shown in FIG. After passing through the ground wire 8 to the refrigerator compartment hinge 5, it passes through the refrigerator main body outer box 1 to the ground (noise propagation path 21). Therefore, since external noise such as static electricity is not applied to the refrigerator operation board 16 and the refrigerator control board 6, malfunction of these circuit components can be prevented.

  As described above, according to the present embodiment, no electrostatic noise is applied to the refrigerator operation board 16 and the refrigerator control board 6 and the grounding is eliminated, so that the microcomputers 13 and 14 and other electronic components malfunction. Can be prevented. Further, in the present embodiment, since the ground wire passing through the refrigerator compartment door partition 7 is simply branched and attached to the refrigerator compartment door sheet metal back surface 10 with the conductive tape 9, the static electricity is inexpensively provided. A highly refrigerated refrigerator can be realized.

  The present invention is useful as a refrigerator.

1 Refrigerator body outer box 2 Refrigerator operation panel 3 Refrigeration room door 4 Refrigeration room door stopper
5 Refrigerating Room Hinge 6 Refrigerator Control Board 7 Refrigerating Room Door Partition 8 Ground Wire 9 Conductive Tape 10 Refrigerating Room Door Sheet Metal Back 11 Condensation Prevention Heater Line 12 Communication Lines 13 and 14 Microcomputer 15 Display Unit 16 Refrigerator Operation Board 17 Switch 19 Compressor 20 Damper 21 Noise propagation path

Claims (3)

A grounded refrigerator outer case,
A refrigerator door attached to the outer box of the refrigerator body so as to be freely opened and closed;
A hinge that supports the refrigerator door so that it can be opened and closed;
A refrigerator operation panel attached to the front surface of the refrigerator compartment door and attached with a refrigerator operation board;
A ground wire connected to the hinge supporting the refrigerator door on which the refrigerator operation panel is mounted, and led to the back surface of the sheet metal constituting the refrigerator door;
A conductive tape that attaches the ground wire to the back surface of the sheet metal of the refrigerator door and connects to the sheet metal;
A refrigerator comprising: The refrigerator compartment door consists of a pair of left and right double doors,
The hinge is composed of a pair that supports a pair of the refrigerator compartment doors so as to be openable and closable,
The refrigerator operation panel is attached to one front surface of the pair of refrigerator compartment doors,
A refrigerator compartment door partitioning portion for partitioning the refrigerator compartment doors in a state where the pair of refrigerator compartment doors is closed is provided at the opposite end portion of the refrigerator compartment door to which the refrigerator operation panel is mounted. And
2. The refrigerator according to claim 1, wherein the ground wire connected to the hinge is led to a back surface of a sheet metal of the refrigerator door through the inside of the refrigerator compartment door partition.   The refrigerator according to claim 1, further comprising a refrigerator control board that is connected to the refrigerator operation panel via a communication line and controls the entire refrigerator.

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