JP2017009190A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that in a case where an electrostatic switch is provided at a door, prevents an electrostatic switch from erroneously functioning when doors other than the door with the electrostatic switch are opened.SOLUTION: For a refrigerator, a left door 121 and a right door 122 are provided in a cold room; a drawer type door 131 is provided in a vegetable chamber; a door opening operation part 201 is provided on the left door 121; a door opening operation part 202 is provided on the right door 122; an electrostatic switch 210 and a guard electrode 211 are provided at each of the door opening operation parts 201 and 202; and the guard electrode 211 is provided outside the electrostatic switch 210.SELECTED DRAWING: Figure 4

Description

  Embodiments of the present invention relate to refrigerators.

  Recently, an opening switch made of an electrostatic switch, a cooling control change switch, and the like are provided on the front face of the refrigerator compartment door.

JP 2013-72581 A JP 2012-21696 A

  When the opening switch comprising the electrostatic switch is provided on the door of the refrigerator compartment, the door of the refrigerator compartment is located when the handle of the vegetable compartment door adjacent to the door of the refrigerator compartment is opened. There was a problem that the door of the refrigerator compartment might open in response to the electrostatic switch in this hand.

  Therefore, in view of the above problems, an embodiment of the present invention provides a refrigerator in which an electrostatic switch does not function by mistake when opening a door other than this door when an electrostatic switch is provided on the door. Objective.

  An embodiment of the present invention includes a cabinet, a first door provided in the cabinet, a second door provided in the cabinet and adjacent to the first door, and the first door or the second door. A capacitance type electrostatic switch provided on at least one of the doors and provided on an edge adjacent to the other door, and provided on the one door, and A refrigerator having a guard electrode that is provided on the other door side and generates an electromagnetic field that suppresses the electromagnetic field generated from the electrostatic switch from spreading to the other door.

The front view of the refrigerator which shows one Embodiment of this invention. The longitudinal cross-sectional view seen from the side of a refrigerator. The top view of a refrigerator. The enlarged front view of the door part of a left door, a right door, and a vegetable room. AA line sectional view in FIG. The figure of the front of a switch board. The figure of the rear surface of a switch board. It is a figure of the front surface of a switch board, Comprising: The figure of the state which described LED. The exploded perspective view of an opening operation part. The refrigerator block diagram. The front view of the refrigerator of the example 1 of a change. The front view of the refrigerator of the example 2 of a change.

  Hereinafter, the refrigerator 10 of one Embodiment is demonstrated based on FIGS.

(1) Structure of refrigerator 10 The structure of the refrigerator 10 is demonstrated based on FIG. 1 and FIG. FIG. 1 is a front view of the refrigerator 10, and FIG. 2 is a longitudinal sectional view as seen from the side of the refrigerator 10.

  The cabinet 11 of the refrigerator 10 is a heat insulating box, and is formed of an inner box and an outer box, and a heat insulating material is filled between them. The cabinet 11 has a refrigerator compartment 12, a vegetable compartment 13, a small freezer compartment 14 and a freezer compartment 15 in order from the top, and an ice making room 16 is provided next to the small freezer compartment 14. A horizontal heat insulating partition 36 is provided between the vegetable compartment 13, the small freezer compartment 14 and the ice making compartment 16. The refrigerator compartment 12 and the vegetable compartment 13 are partitioned by a horizontal partition 38. In front of the refrigerator compartment 12, a double door left door 121 and a right door 122 are provided. The vegetable compartment 13, the small freezer compartment 14, the freezer compartment 15 and the ice making compartment 16 have drawer doors 131, 141 and 151, respectively. 161 are provided.

  In the refrigerator compartment 12, a plurality of shelves 40 are provided horizontally, and a chilled chamber 42 is provided in the lower part. A plurality of door pockets 44 are provided on the rear surfaces of the left and right doors 141 and 142 of the refrigerator compartment 12. In the vegetable compartment 13, drawer-type vegetable containers 46 and 48 are provided.

  A refrigeration evaporator (hereinafter referred to as “R EVA”) 28 is provided from the lower rear surface of the refrigerator compartment 12 to the rear surface of the vegetable compartment 13, 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 20 that is a cooling chamber surrounded by the EVA cover 18.

  A freezing evaporator (hereinafter referred to as “F-eva”) 32 is provided in the F-evaporation chamber 29 from the rear surface of the small freezer compartment 14 and the ice making chamber 16 to the rear surface of the freezer compartment 15, and a refrigerating blower is provided above it. (Hereinafter referred to as “F fan”) 34 is provided. A defrost heater (not shown) is provided below the F EVA 32.

  A machine room 22 is provided at the bottom of the rear surface of the cabinet 11, and a compressor 24 and the like constituting the refrigeration cycle are placed thereon. A control plate 26 having a control unit 50 is provided on the upper rear surface of the machine room 22.

(2) Left door 121, right door 122, door 131
Next, the structure of the left door 121 and the right door 122 will be described with reference to FIGS.

  The left door 121 and the right door 122 of the refrigerator compartment 12 are double doors that are opened by a hinge portion. The left door 121 has a hinge portion on the left side, and the right door 122 has a hinge portion on the right side.

  A pair of left and right door pressing devices 101 and 102 are provided at the front portion of the ceiling surface of the cabinet 11. The door pressing device 101 opens the left door 121 by pushing the plunger forward by an electromagnet in response to an opening signal from the control unit 50. The door pressing device 102 opens the right door 122 by pushing the plunger forward by an electromagnet in response to an opening signal from the control unit 50.

  The front surface of the left door 121 has a front plate 103 formed of a steel plate, and a rear plate 104 is attached to the rear of the front plate 103. A lower cap 105 made of synthetic resin is attached to the lower portion of the left door 121 from the lower portion of the front plate 103 to the lower portion of the rear plate 104. In a space surrounded by the front plate 103, the rear plate 104, and the lower cap 105, a heat insulating member 106 made of urethane foam or a heat insulating panel is provided. On the top, bottom, left and right of the rear plate 104, seal materials 107 for preventing cold air leakage are attached in a frame shape. The sealing material 107 comes into contact with the front end portion of the partition plate 38 and closes the inside of the refrigerator compartment 12. A plurality of shelves 44 are attached to the rear surface of the rear plate 104.

  As shown in FIG. 5, the lower cap 105 has a shape that covers only the rear portion of the lower portion of the left door 121, and a handle portion 108 for inserting a hand is formed at the lower end of the lower cap 105.

  A panel plate 109 made of synthetic resin is attached to the lower portion of the front plate 103 and in front of the lower cap 105. A storage space 110 is formed on the rear right side of the panel plate 109 with the lower cap 105, and the left opening operation unit 201 is stored in the storage space 110.

  The right door 122 also has a symmetrical structure with the left door 121.

  The door 131 of the vegetable compartment 13 is a drawer type, the front surface of the door 131 is provided with a front plate 111 made of a steel plate, and a cap 112 is provided at the upper end of the front plate 111. The cap 112 is made of a synthetic resin, and a handle portion 113 for placing a hand in the front portion is formed. The handle portion 113 has an open top surface and a concave shape, and a finger is inserted from above as shown in FIG. A sealing material 114 for preventing cooling leakage is attached to the rear portion of the cap 112. The sealing material 114 is attached to the rear surface of the door 131 in a frame shape, and the upper sealing material 114 comes into contact with the partition body 38 and closes the vegetable compartment 13.

(3) Opening operation unit 201, 202
Next, the opening operation units 201 and 202 will be described with reference to the drawings. Note that the left-side opening operation unit 201 and the right-side opening operation unit 202 have the same structure and are symmetrical.

  The left opening operation unit 201 is attached to the lower right portion of the left door 121 as described above, and the panel plate 109 is attached to the front thereof. When the user operates the door opening operation unit 201, the control unit 50 operates the left door pressing device 101 to open the left door 121. Moreover, the opening operation part 202 is attached to the lower left side of the right door 122, and the panel board 109 is attached to the front surface. When the user operates the right door operation unit 202, the control unit 50 operates the right door pressing device 102 to open the right door 122.

  As shown in FIG. 9, the opening operation unit 201 includes a substrate assembly 203 and a casing 204 that houses the substrate assembly 203.

  The casing 204 is made of a synthetic resin and has a rectangular parallelepiped shape. The front surface is open and an opening portion 218 is provided. The lower surface is open. The opening portion of the lower surface is closed by the lid member 205. Is attached with a metal body such as an aluminum foil. A metal body 219 such as an aluminum foil is attached to the inner surface of the synthetic resin lid member 205. Thereby, the electromagnetic waves generated from the main body side of the refrigerator 1 do not affect the substrate assembly 203 side.

  The board assembly 203 includes a shielding plate 206, a switch board 207, and an LED board 216. The substrate assembly 203 is accommodated in the casing 204 through the opening 218 of the casing 204.

  The shielding plate 206 is made of synthetic resin, and the switch substrate 207 is fixed to the front surface, and the LED substrate 216 is fixed to the rear surface.

  The switch board 207 is a board of a capacitive touch sensor, and is provided with an electrostatic switch 210 and a guard electrode 211. A panel plate 109 is disposed in front of the switch board 207.

  The LED substrate 216 is provided with a plurality of LEDs 217.

(4) Switch board 207
Next, the switch substrate 207 will be described with reference to FIGS. 6 shows the front surface of the switch board 207 and FIG. 7 shows the rear surface.

  As shown in FIGS. 6 and 7, the switch board 207 of the opening operation unit 201 has an elongated rectangular shape. The switch board 207 includes an electronic component mounting portion 208, an electrostatic switch 210, and a guard electrode 211. An arrangement portion 209 is provided.

  A plurality of electronic components 208 a such as connectors are mounted on the mounting portion 208, and the electronic components 208 a protrude from the rear surface, and the protruding portion is accommodated in the recess of the shielding plate 206.

  As shown in FIG. 6, an electrostatic switch 210 that is a first electrode, an intermediate region electrode 214 that is a second electrode, and a guard electrode 211 that is a third electrode are provided on the front surface of the arrangement portion 209. Yes. The electrostatic switch 210 and the guard electrode 211 are metal electrodes and are electrically insulated from each other.

  As shown in FIG. 7, a mesh-like ground pattern 215 that is a fourth electrode is provided on the rear surface of the arrangement portion 209.

  The electrostatic switch 210 is a capacitive touch (contact) electrode that generates an electromagnetic field P, and is a touch sensor for detecting that a user's finger is approaching. The electrostatic switch 210 includes a mutual capacitance type touch sensor and a self-capacitance type touch sensor. The mutual capacitance method includes one transmission electrode and one reception electrode. When a current is supplied to the transmission electrode, an electromagnetic field is generated and the electromagnetic field is received by the reception electrode. For example, when the finger approaches the detection area of the electrostatic switch 210, a part of the electromagnetic field is absorbed and received by the receiving electrode, and the amount of detected energy is reduced, so that the electrostatic switch 210 detects the approach of the finger. it can. The self-capacitance method requires one electrode (electrostatic switch 210) having a stray capacitance. The stray capacitance of the electrode (electrostatic switch 210) is affected by the parasitic capacitance between the electrode (electrostatic switch 210) and the surrounding conductor (finger). When the finger approaches the electrostatic switch 210, the value of the stray capacitance increases due to the influence of the parasitic capacitance, and the electrostatic switch 210 can detect the approach of the finger by measuring the increased stray capacitance.

  The intermediate region electrode 214 is provided between the electrostatic switch 210 and the guard electrode 211, assists the electrostatic switch 210, and functions as an electrostatic switch.

  The guard electrode 211 generates an electromagnetic field Q that suppresses the downward expansion of the electromagnetic field P generated by the electrostatic switch 210.

  The ground pattern 215 is provided so that noise from the main body side of the refrigerator 10 does not affect the electromagnetic field P generated by the electrostatic switch 210 and the electromagnetic field Q generated by the guard electrode 211.

(5) Electrostatic switch 210
Next, the electrostatic switch 210 will be described. As shown in FIG. 6, the electrostatic switch 210 is a horizontally long rectangular switch, and slits 212 and 213 are formed vertically around the electrostatic switch 210. A through hole 210C is formed at the center of the electrostatic switch 210, and a conductive wire pattern 210D is connected to the through hole 210C as shown in FIG. Since the action of the user pressing (contacting) the electrostatic switch 210 with a finger is usually aimed at the center of the electrostatic switch 210, the through hole 210 </ b> C is formed at the center of the electrostatic switch 210. ing.

  In addition, a display unit 115 for indicating the position of the electrostatic switch 210 is described on the panel plate 109 attached in front of the electrostatic switch 210. The display unit 115 has, for example, a ring shape, and the position where the display unit 115 is displayed is shifted upward from the center of the electrostatic switch 210. That is, the position is displayed at a position opposite to the guard electrode 211.

  As shown in FIGS. 6 and 8, one end portion of the electrostatic switch 210 is connected to the arrangement portion 209 by a connecting portion 210A, and the other end portion of the electrostatic switch 210 is connected to the arrangement portion 209 by a connecting portion 210B. ing. The slits 212 and 213 do not surround the entire electrostatic switch 210 and are formed in a U shape. The connection between the electrostatic switch 210 and the outside of the slits 212 and 213 is made by connecting portions 210A and 210B. This is because the switch substrate 207 is not divided.

(6) LED board 216
Next, the LED substrate 216 will be described. As shown in FIG. 8, the plurality of LEDs 217 provided on the LED substrate 216 are arranged behind the slits 212 and 213 surrounding the electrostatic switch 210 via a shielding plate 206. The shielding plate 206 is provided with openings through which light passes in correspondence with the LEDs 217. Note that the four LEDs 217 corresponding to the four corners of the slits 212 and 213 are disposed outside the slit 213 that is out of the slit 212.

(7) Guard electrode 211
Next, the guard electrode 211 will be described. The guard electrode 211 shown in FIG. 6 is formed in a horizontally long rectangular shape below the electrostatic switch 210 and the intermediate region electrode 214 in the arrangement portion 209. The guard electrode 211 generates an electromagnetic field Q in a direction opposite to the electromagnetic field P generated by the electrostatic switch 210. Thereby, as shown in FIG. 5, the electromagnetic field P generated by the electrostatic switch 210 is suppressed from spreading downward by the electromagnetic field Q in the opposite direction generated by the guard electrode 211.

(8) Electrical configuration of refrigerator 10 Next, the electrical configuration of the refrigerator 10 will be described based on the block diagram of FIG. As shown in FIG. 10, the control unit 50 is electrically connected to the electrostatic switch 210 and the guard electrode 211 of the door opening operation units 201 and 202, the door pressing devices 101 and 102, and the plurality of LEDs 217.

  The control unit 50 is connected to a compressor 24, an R fan 30, an F fan 34, and the like.

(9) Attachment of the door opening operation part 201 Next, the structure which attaches the door opening operation part 201 to the left door 121 is demonstrated based on FIG.4, FIG.5, FIG.9.

  First, the substrate assembly 203 is inserted into the casing 204 from the opening portion 218.

  Next, the lid member 205 is attached to the opening portion on the lower surface of the casing 204 in a state where the substrate assembly 203 is accommodated, and the substrate assembly 203 is fixed to the casing 204. Thereby, the opening operation part 201 is completed.

  Next, regarding the left door 121, the front plate 103, the rear plate 104, and the lower cap 105 are attached and the heat insulating member 106 is injected. Then, the opening operation unit 201 is attached to the storage space 110 formed by the lower cap 105.

  Next, the panel plate 109 is attached to the lower part of the front plate 103. At this time, the display unit 115 is positioned slightly above the center of the electrostatic switch 210.

  The opening operation unit 202 is also attached to the right door 122 in the same manner as described above.

(10) Operation State of Door Opening Operation Unit 201 Next, an operation state when the user opens the left door 121 will be described.

  First, the control unit 50 maintains the electrostatic switch 210 in the “high sensitivity” state when the left door 121 is closed to generate the electromagnetic field P, and energizes the guard electrode 211 to generate the electromagnetic field Q.

  Next, when the user's finger enters the electromagnetic field P that is the detection area of the electrostatic switch 210, the electrostatic switch 210 sends an approach signal SG indicating that the finger is approaching to the control unit 50.

  Next, upon receiving the approach signal SG, the control unit 50 determines that the finger has approached the electrostatic switch 210, stops energization of the guard electrode 211, and increases the sensitivity of the electrostatic switch 210 to “high”. Decrease “sensitivity” to “low sensitivity”. In addition, the control unit 50 lights the LED 217 at the same time to illuminate the periphery of the electrostatic switch 210, thereby raising the position of the electrostatic switch 210. As a result, the user can visually confirm the position of the electrostatic switch 210.

  Next, when the finger touches the electrostatic switch 210 from a state in which the finger approaches the electrostatic switch 210, the electrostatic switch 210 functions as a contact switch, and the electrostatic switch 210 indicates that the finger contacts the electrostatic switch 210. Is sent to the control unit 50.

  Next, when receiving the contact signal SH, the control unit 50 operates the door pressing device 101 to open the left door 121.

  This operation is the same for the right door 122.

(11) Effect According to the present embodiment, when the left door 121 is opened, the left door 121 can be opened by bringing the finger close to and in contact with the display unit 115 on the lower right side of the left door 121.

  Further, even if a finger is inserted into the handle portion 113 to open the door 131 of the vegetable compartment 13, the electromagnetic field P generated from the electrostatic switch 210 in the door opening operation portions 201 and 202 is electromagnetically generated from the guard electrode 211. Since the downward spread is suppressed by the field Q, the electrostatic switch 210 does not function with a finger placed in the handle portion 113, and the left door 121 and the right door 122 are not accidentally opened.

  In addition, since the guard electrode 211 is formed elongated along the lower edge of the left door 121 or the right door 122, a malfunction occurs regardless of the position of the handle portion 113 of the door 131 of the vegetable compartment 13. Can be prevented.

  In addition, since the display unit 115 displayed on the panel plate 109 is provided so as to be shifted upward from the center of the detection position of the electrostatic switch 210 where the guard electrode 211 is not provided, the user can place the finger on the electrostatic switch. When approaching 210, the display unit 115 is shifted so that the electrostatic switch 210 can be reliably contacted without contacting the guard electrode 211.

  Further, since the guard electrode 211 is not provided at a position opposite to the guard electrode 211 currently provided across the electrostatic switch 210, that is, not provided above the electrostatic switch 210, When the user's finger approaches from above, the user can surely enter the electromagnetic field P generated from the electrostatic switch 210 and cause the electrostatic switch 210 to function.

(12) Modification 1
Next, a first modification of the above embodiment of the refrigerator 10 will be described with reference to FIG.

  In the above embodiment, the electrostatic switch 210 is provided only for opening the door. However, in addition to the electrostatic switch 210 for opening and closing, a plurality of electrostatic switches 220 used for cooling change are provided in a horizontal row. Moreover, the guard electrode 211 is provided in an L shape, and the electrostatic switch 210 and the electrostatic switch 220 are partitioned.

  Thereby, when the user tries to operate the electrostatic switch 220 with a finger, the adjacent opening / closing electrostatic switch 210 does not function erroneously due to the electromagnetic field Q of the guard electrode 211.

(13) Modification 2
Next, the refrigerator 10 of the modification 2 of the said embodiment is demonstrated based on FIG.

  In the said embodiment, although the front plate of the left door 121 and the right door 122 was a steel plate, in this example of a change, it is formed from the glass plate. Further, the electrostatic switch 210 and the guard electrode 211 are provided vertically in the lower right portion of the left door 121, and the electrostatic switch 210 and the guard electrode 211 are provided vertically in the lower left portion of the right door 122.

  Accordingly, when the user opens the left door 121 and tries to operate the left electrostatic switch 210 with his / her finger, the right electrostatic switch 210 is erroneously caused by the electromagnetic field Q of the guard electrode 211 and the right guard electrode 211. Does not work.

(14) Modification 3
Next, the refrigerator 10 of the modification 3 of the said embodiment is demonstrated.

  In the above embodiment, the handle 113 of the door 131 of the vegetable compartment 13 has a structure in which a finger is inserted from above, but instead, the handle 113 of the door 131 has a recess opened downward, and the user can A finger may be put into the recess of the handle from below.

(15) Other Modifications 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, 11 ... Cabinet, 12 ... Cold room, 13 ... Vegetable room, 50 ... Control part, 101 ... Door pressing device, 102 ... Door pressing device, 121 ... Left door, 122 ... Right door, 131 ... Vegetable room door, 109 ... Panel board, 115 ... Display part, 201 ... Opening operation part, 202 ... Open Door operation unit, 210 ... electrostatic switch, 211 ... guard electrode

Claims (8)

Cabinet,
A first door provided in the cabinet;
A second door provided in the cabinet and adjacent to the first door;
A capacitance-type electrostatic switch provided on at least one of the first door and the second door, and provided on an edge adjacent to the other door;
A guard that is provided on the one door and that is provided closer to the other door than the electrostatic switch and generates an electromagnetic field that suppresses the electromagnetic field generated from the electrostatic switch from spreading to the other door. Electrodes,
Refrigerator. Cabinet,
A first door provided in the cabinet;
A second door provided in the cabinet and adjacent to the first door;
A capacitance-type electrostatic switch provided on at least one of the first door and the second door, and provided on an edge adjacent to the other door;
A guard that is provided on the one door and that is provided closer to the other door than the electrostatic switch and generates an electromagnetic field that suppresses the electromagnetic field generated from the electrostatic switch from spreading to the other door. Electrodes,
Have
The guard electrode is not provided at the opposite position across the electrostatic switch,
refrigerator. The first door is an upper door;
The second door is a lower door provided below the upper door,
The refrigerator according to claim 1 or 2. The one door is the upper door;
The refrigerator according to claim 3. The guard electrode is provided below the electrostatic switch and is not provided above.
The refrigerator according to claim 4. The display unit indicating the position of the electrostatic switch is shifted to the side where the guard electrode is not provided from the center of the detection position of the electrostatic switch.
The refrigerator according to claim 5. The electrostatic switch has an elongated shape along an edge of the one door;
The refrigerator according to claim 1 or 2. The first door is a left door;
The second door is a right door provided on the right side of the left door;
The refrigerator according to claim 1 or 2.

Images