JP6745947B2 - refrigerator - Google Patents

Description

The embodiment relates to a refrigerator including a front plate on the front surface of a door.

2. Description of the Related Art In recent years, refrigerators having a front plate of a glass plate or a transparent plastic plate colored for decoration on the front surface of the door have appeared. In such a refrigerator, a capacitance-type operation input unit for inputting a cooling function selection or setting operation is arranged on the back side of the front plate.

In such a refrigerator, if the front plate is a conductive member, the electrostatic capacity is absorbed by the conductive member, and the electrostatic capacity is not generated, so that there is a problem that an operation input cannot be made.

JP, 2004-198058, A

The present invention has been made in view of the above-mentioned problems of the prior art, and in a refrigerator having a door in which an operation input unit is installed on the back side of a front plate, a refrigerator that can reliably perform capacitance-type operation input is provided. The purpose is to provide.

The refrigerator according to the embodiment includes a door body attached to a front opening of the refrigerator body, a non-conductive front plate installed on the front surface of the door body, and a back side of the front plate in the door body. A wireless communication unit for performing wireless communication of information, wherein a conductive member is not arranged at a position facing the wireless communication unit on the back surface of the front plate, and the position on the back surface of the front plate is Conductive members are arranged at different positions, the wireless communication unit is a position near one of the left and right side walls of the refrigerator main body , and in the door body provided with the wireless communication unit. It is characterized in that it is arranged closer to the one side wall than the other side wall, and the conductive member is arranged closer to the other side wall of the refrigerator body.

The front view of the refrigerator of an embodiment. The perspective view of the refrigerator of an embodiment of a door opening state. The expansion perspective view of the refrigerating room part of the refrigerator of an embodiment. The perspective view from the back of the right front plate in the refrigerator of an embodiment.

Hereinafter, embodiments will be described in detail with reference to the drawings.

The refrigerator 1 of the embodiment shown in FIG. 1 includes a cabinet 11 which is a refrigerator main body. As shown in FIG. 2, the cabinet 11 includes a refrigerating room 12, a vegetable room 13, a switching room 14 that can switch the internal set temperature, and a freezing room 15 from the top. An ice making chamber 16 is provided on the left side of the switching chamber 14.

As shown in FIGS. 2 and 3, in order to cover the front opening of the refrigerating compartment 12, a pair of left and right doors 21 and 22 open and close with a hinge portion 31 and 32 above and below the left end portion and the right end portion, respectively. It is installed so that The vegetable compartment 13, the switching compartment 14, the freezing compartment 15, and the ice making compartment 16 are provided with drawer-type doors 23, 24, 25, and 26, respectively. Although not shown in the drawing on the rear surface of the vegetable compartment 13, a refrigerating evaporator for cooling the refrigerating compartment 12 and the vegetable compartment 13 is arranged, and on the rear surface of the switching compartment 14 and the freezing compartment 15 are the same. Although not shown, a freezing evaporator for cooling the switching chamber 14, the freezing chamber 15, and the ice making chamber 16 is arranged. Further, on the back surface of the vegetable compartment 13, a control unit including a microcomputer for controlling the refrigerator 1 is also arranged.

The pair of left and right doors 21 and 22 is a double door type door, and the left side door (hereinafter referred to as left door) 21 has a hinge portion (hereinafter referred to as left hinge portion) 31 on the left side, and the right side door. The (hereinafter, referred to as right door) 22 has a hinge portion (hereinafter, referred to as right hinge portion) 32 on the right side portion. In FIG. 1, the left and right hinge portions 31 and 32 are covered with the caps 33 and 34, respectively.

As shown in FIG. 3, the left hinge portion 31 of the left door 21 is composed of a hinge shaft and a hinge receiving portion, and shaft holes are opened in the upper surface and the lower surface of the left end portion of the left door 21, respectively. A pair of upper and lower plate-shaped hinge receiving portions are provided at the left front end portion of the ceiling surface of the cabinet 11 and at the left end portion of the lower end of the refrigerating compartment 12, and the hinge shafts project from the pair of upper and lower hinge receiving portions. The pair of upper and lower hinge shafts are engaged with the shaft holes of the left door 21 so that the left door 21 can rotate. Also, the hinge shaft engaging with the shaft hole at the upper left end of the left door 21 has a cylindrical shape, and the lead wire 41, which will be described later, is inserted into the shaft hole and the hinge shaft, and the hinge receiver It is pulled out from the opening 31a in the upper part of the section. The right hinge portion 32 of the right door 22 has the same structure, and the lead wire 42 and the ground wire 43 are drawn out from the opening 32a. The lead wires 41, 42 are connected to the lead wires 44, 46 on the cabinet 11 side at the left and right hinge portions 31, 32, respectively. The lead wires 44 and 46 on the cabinet 11 side are connected to the control unit by crawling the inside of the cabinet 11. On the other hand, the ground wire 43 is connected to the ground wire 47 of the cabinet 11, and the end portion of the ground wire 47 is connected to the conductor portion of the cabinet 11 to ground the floating charge of the operation input unit 51, which will be described later, to the cabinet 11 side.

Both the left door 21 and the right door 22 have front plates 21B, 22B made of colored and transparent glass attached to the openings of the inner plates 21A, 22A opening to the front, and the inner plates 21A, 22A are made of urethane-like material. The structure is filled with a non-conductive heat insulating material. The degree of coloring of the front plates 21B and 22B is such that the filler such as the heat insulating material on the back side of the front plates 21B and 22B cannot be seen from the outside when receiving the external light. Moreover, from the front side, light is transmitted while the operating button name, cooling function name, LED display lamp that transparently displays cooling intensity, etc., and 7-segment LED display device that transparently displays changing numerical values such as temperature value are lit. It is also visible.

In the right end portion of the left door 21, that is, in the closed state, in the portion which closely faces and opposes the left end portion of the right door 22, a rotary partition body 61 for maintaining a sealed state with the right door 22 in the door closed state is provided. It is provided. A dew condensation prevention heater 62 for preventing dew condensation is built into the rotary partition 61. The lead wire 41 for supplying power to the dew condensation preventing heater 62 is pulled out from the opening 31a of the left hinge portion 31 through the back side of the front plate 21A of the left door 21 and is connected to the main body side lead wire 44 installed on the cabinet 11 side. It is connected by the connector 45.

Further, a conductor sheet 63 is attached to a part or all of the rear surface side of the front plate 21B of the left door 21. This is because the front plate 21B is made of glass and is therefore non-conductive, so that the magnet sheet cannot be attracted from the front side. By attaching the conductor sheet 63, the magnet sheet can be attracted from the front side of the front plate 22B. As a result, it becomes possible to attach a memo or the like to the front surface of the front plate 21B.

In order to attract the magnet, the left door 21 has a conductive heat insulating material inside the inner plate 21A (a vacuum heat insulating material covered with a conductive metal film such as aluminum at least on the surface thereof). Is a conductive heat insulating material, and the front surface is covered with the front plate 21B, so that the conductor sheet 63 can be substituted.

On the back side of the front plate 22B of the right door 22, a capacitance-type operation input unit 51 for operating the refrigerator by a touch operation from the front of the front plate 22B is attached. The operation input section 51 detects an infrared ray receiving section 52 for detecting an environmental condition around the refrigerator, a home button 53, a touch on the home button 53, and transmits an operation button name, a cooling function name, a cooling intensity, and the like. An LED display lamp 54 for displaying and a 7-segment LED display device 55 for transparently displaying a changing numerical value such as a temperature value are provided. Then, for supplying power to the infrared light receiving portion 52 of the operation input portion 51, the LED display lamp 54, the 7-segment LED display device 55, and the like, and for extracting a touch position detection signal, a light receiving intensity signal of the infrared light receiving portion 52, and the like. The lead wire 42 and the ground wire 43 are connected to the operation input unit 51. The lead wire 42 and the ground wire 43 are connected to the lead wire 46 and the ground wire 47 on the cabinet 11 side by a connector 48 at the right hinge portion 32.

In addition, a wireless communication unit 70 for wirelessly transmitting and receiving information is installed at an appropriate location of the right door 22, that is, a lower right portion of the right door 22 in this embodiment, at a position behind the front plate 22B. There is. The lead wire 71 of the wireless communication unit 70 is pulled out together with the lead wire 42 of the control operation unit 51.

In this way, the lead wire 41 to the dew condensation prevention heater 62 and the lead wire 42 to the operation input section 51 are made to pass through the left and right hinge portions 31 and 32 respectively. It is possible to prevent the adverse effect that the electromagnetic waves generated when the power is supplied from causing noise on the lead wire 42 connected to the operation input unit 51, and improve the reliability of the control operation.

Since the light distribution characteristic of the LED indicator lamp 54 is strong in the immediate front, the light of the transmissive display is strong in the central part and weak in the surroundings, resulting in uneven brightness. Therefore, as shown in FIG. 4, the corresponding portion 54-1 of the front plate 22B corresponding to the front of the installation position of the LED indicator lamp 54 has a surrounding portion 54- for the purpose of evenly distributing the intensity of transmitted light. The coloring degree is stronger (darker) than 2.

On the other hand, in the 7-segment LED display device 55, since the amount of light emitted from the LED of each segment is small, the transmitted light becomes weak. Therefore, in order to avoid this and to make the display appear bright from the front side, the coloring degree of the corresponding portion 55-1 of the front plate 22B corresponding to the front of the installation position of the 7-segment LED display device 55 is lower than other portions ( Thin).

Further, other information and characters on the front plate 22B, such as operation button names such as "refrigeration", "freezing", "ice making", and "single freezing", and the display window 56 for transparently displaying the control operation name are also displayed. The degree of coloring is lower than that of the portion so that the characters are clearly displayed from the front side of the front plate 22B.

The control unit for cooling control of the refrigerator according to the present embodiment is a general one and is not particularly limited. For example, a compressor, an operation panel, a dew condensation prevention heater, and an ice making chamber An ice making device, a refrigerator compartment fan, a freezer compartment fan, and a defrost heater are connected to this control unit and controlled.

(Example of change)
In the above embodiment, the left door 21 is provided with the dew condensation preventing heater and the right door 22 is provided with the operation input unit, but the combination may be reversed. Further, the LED indicator lamp and the 7-segment LED display device do not necessarily have to be provided together, and can be selectively provided.

As the simplest door structure, a single left-opening or right-opening single door is placed in front of the refrigerator compartment. A conductive front plate may be attached, and an electrostatic capacitance type operation input unit that receives an operation input by a touch operation on the front plate may be installed in the door body.

In the case of such a refrigerator, a ground wire for grounding the stray charge of the operation input unit is pulled out from the operation input unit and connected to a conductive member on the refrigerator main body side to perform a capacitive touch operation. Will be stable.

As another modified example, the door body is made up of two left and right door bodies that open and close in a double-sided manner at the hinges at the left and right ends, and one of the left and right door bodies is A colored transparent non-conductive front plate and a capacitive operation input section that receives operation input from the front side of the front plate are installed, and the other of the left and right door bodies is colored and transparent. It is also possible to install a front plate having a conductive portion and not install an operation input unit on the back surface of the front plate, thereby making the structure simpler than that of the above-described embodiment. As a result, the magnet sheet can be attracted to the front plate having the conductive portion, and the memo can be attached to the front surface of the front plate, which improves convenience.

Further, the wireless communication unit 70 may be installed not in the door body but in a proper place in the storage space in the cabinet 11 so that wireless communication of information can be performed through the door body. In that case, a conductive heat insulating material that absorbs communication radio waves is not installed at least at a position facing the wireless communication unit 70 of the door body, and a place where wireless communication through the front plate of the door body is not disturbed A heat insulating material having conductivity can be installed in the above. Further, regarding the left and right double-door type door bodies 21 and 22, the wireless communication unit 70 can be installed in the door body or the storage room on the side where the operation input unit 51 is not installed. In that case, at least the door body is installed. A conductive heat insulating material that absorbs communication radio waves is not installed at a position facing the wireless communication unit 70, and a conductive heat insulating material is installed at a location that does not interfere with wireless communication through the front plate of the door body. It can be configured to.

1 Refrigerator 11 Cabinet 12 Refrigerator 21 Left door 21A Inner plate 21B Front plate 22 Right door 22A Inner plate 22B Front plate 31 Left hinge part 32 Right hinge part 31a Opening 32a Opening 41, 42 Lead wire 43 Ground wire 51 Operation input Part 52 Infrared receiver 54 LED indicator 55 7 segment LED display 61 Rotating partition 62 Condensation prevention heater 70 Wireless communication part

Claims (3)

A door body attached to the front opening of the refrigerator body,
A non-conductive front plate installed on the front surface of the door body,
A wireless communication unit that is installed on the back side of the front plate in the door body and performs wireless communication of information;
No conductive member is arranged at a position facing the wireless communication unit on the back surface of the front plate, and a conductive member is arranged at a position different from the position on the back surface of the front plate ,
The wireless communication unit is closer to one of the left and right side walls of the refrigerator body , and is closer to the one side wall than the other side wall of the door body where the wireless communication unit is provided. Placed in a position ,
The refrigerator, wherein the conductive member is arranged at a position close to the other side wall of the refrigerator body. A plurality of door bodies are provided,
The refrigerator according to claim 1, wherein the wireless communication unit and the conductive member are arranged in the door main body different from each other. A pair of left and right door bodies are provided,
The wireless communication unit is one of the pair of left and right door bodies, which is closer to the one side wall than the side where the other door body is located in the one side wall body, and the wireless communication unit. The entire communication unit is arranged at a position closer to the one side wall than the center position in the left-right direction in the one door body,
The refrigerator according to claim 2, wherein the conductive member is arranged at a position close to the other side wall of the refrigerator main body and on the other door main body.