WO2020025409A1 - Appareil de froid ménager pourvu d'un ensemble d'antennes - Google Patents

Appareil de froid ménager pourvu d'un ensemble d'antennes Download PDF

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Publication number
WO2020025409A1
WO2020025409A1 PCT/EP2019/069870 EP2019069870W WO2020025409A1 WO 2020025409 A1 WO2020025409 A1 WO 2020025409A1 EP 2019069870 W EP2019069870 W EP 2019069870W WO 2020025409 A1 WO2020025409 A1 WO 2020025409A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
reflector
refrigeration device
household refrigeration
household
Prior art date
Application number
PCT/EP2019/069870
Other languages
German (de)
English (en)
Inventor
Stephan Kempfle
Gerald Schmidt
Stoyan Iliev
Original Assignee
BSH Hausgeräte GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeräte GmbH filed Critical BSH Hausgeräte GmbH
Priority to CN201980050639.1A priority Critical patent/CN112513549A/zh
Publication of WO2020025409A1 publication Critical patent/WO2020025409A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/08—Sensors using Radio Frequency Identification [RFID]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07758—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Definitions

  • the invention relates to a household refrigerator with an antenna assembly.
  • EP 1 666 820 A1 discloses a household refrigeration device which comprises a heat-insulated body with an inner container which delimits a coolable interior space provided for storing food.
  • the foods are provided with RFID transponders.
  • the household refrigeration device comprises a plurality of RFID reading devices foamed into an insulating foam of the body, each of which has a flat antenna and is provided for reading out the RFID transponders.
  • DE 10 2013 216 763 discloses a household refrigerator with an RFID module for WLAN transmission from the refrigerator to the outside.
  • the object of the present invention is to provide an improved household refrigeration device which has an RFID reader with an antenna module.
  • the object of the invention is achieved by a domestic refrigeration appliance with the features of claim 1.
  • a domestic refrigeration device has a coolable interior for storing food, a heat-insulated wall, which comprises an inner container facing the coolable interior, an outer shell made of metal and a heat insulation arranged between the inner container and the outer shell, and one connected to an RFID module Antenna assembly on.
  • the outer shell has a sheet metal wall with a recess, a backing part is arranged on the recess, the antenna assembly is arranged in the backing part, and the outer shell has a metal cover which is arranged on the outside over the recess.
  • this has the advantage that the antenna assembly is accessible from the outside even after the housing of the refrigerator has been foamed, and on the other hand it has the advantage that the antenna assembly does not receive any radiation from outside the refrigerator and does not radiate it outside of the refrigerator.
  • the antenna assembly has a reflector and an antenna arranged parallel to it. This has the advantage that the building is flat and takes up little space perpendicular to the surface. It is also advantageous that the complete antenna assembly can be preassembled and mounted as a whole on the backing part without having to readjust or fine-tune the antenna.
  • the household refrigeration device serves the purpose of being able to manage stored food that is provided with an RFID tag.
  • the household refrigeration device has the metallic outer shell, within which the enclosed RFID tags are detected by means of the RFID module and the RFID antenna or antenna module, while RFID tags located outside the refrigeration device are not detected. Unused RFID tags can be stored in the household refrigerator without being detected if they are shielded.
  • the corresponding stored food can be recorded and managed through a clear assignment between RFID tag and food. It can be used to query the food inventory in the refrigerator from a distance and also to automatically replenish the desired or selected food.
  • the backing part preferably lies against a sheet metal wall of the outer casing of the refrigerator and is foamed in insulation material.
  • An arrangement of the RFID antenna or antenna module outside the insulating foam enables good detection of the RFID tags on the one hand and a location in the refrigerator that is accessible from the outside.
  • the backing part or the antenna module are preferably arranged in the ceiling of the refrigerator, alternatively arrangements in side walls, in the rear wall in the floor or in a door are also possible.
  • the backing part has a mounting surface lying in a first level, a reference surface lying in a second level and a floor surface lying in a third level, and the reflector is fastened to the mounting surface at a defined distance from the mounting surface.
  • the antenna has a PCB with a first metal layer, which has an outer surface and at least one coupling surface, the metal layer between the outer surface and the coupling surface being recessed like a frame.
  • the coupling surface is rectangular.
  • this has the advantage that a symmetrical arrangement with good radiation characteristics can easily be achieved.
  • the outer surface is electrically conductively connected to the reflector. This has the advantage of favorable radiation characteristics.
  • the electrical connection between the outer surface and the reflector consists of a metallic screw connection, which is preferably arranged in the middle of the PCB.
  • the advantage of the metallic screw connection lies in the mechanical stability and the simple assembly. The position in the middle of the PCB promotes stability as well as favorable in terms of radiation characteristics.
  • the antenna module has an antenna cable, which is a coaxial cable, the core of which is electrically conductively connected to the coupling surface and the outer conductor of which Reflector is electrically connected. This has the advantage of a good electrical connection of the surfaces to the cable.
  • the PCB has a second metal layer opposite the first metal layer, the first metal layer being arranged on the side of the PCB facing away from the reflector.
  • the reflector can advantageously be connected to the outer surface of the PCB with a metallic screw connection, a screw head resting on the first metal layer.
  • the first and second metal layers can be connected to one another in an electrically conductive manner, wherein electrically insulated areas and electrical separations between mutually insulated areas of one metal layer have correspondences on the other metal layer.
  • the second metal layer has a solder joint with a solder connection of the soul. This has the advantage that the core is attached to the PCB with a second soldering point and the mechanical reliability of the connection of the core is thereby improved.
  • the reflector has clamps which clamp the outer conductor of the antenna cable. This has the advantage that the antenna cable is reliably held on the reflector and positioned in a defined manner.
  • the RFID module has a circuit board and the antenna cable is connected to the circuit board. This is advantageous when installing the refrigerator.
  • the antenna cable can be connected to the board with a two-pin connector.
  • the antenna assembly has spacer sleeves between the reflector and the antenna, which define the distance between the antenna and reflector. This has the advantage that the defined distance between antenna and reflector can be achieved with standard plastic parts.
  • the reflector preferably has pressed threaded sleeves. The advantage of the threaded sleeves on the reflector is a reliable screw connection, which in conjunction with spacer sleeves also reliably creates the desired distance between the antenna and reflector.
  • the antenna is attached to the reflector by means of plastic screws.
  • the heads of these screws preferably have a defined thickness. This has the advantage that the antenna and reflector are insulated at the fastening points and the defined thickness ensures a minimum distance between the antenna and the bottom of the backing part.
  • the threaded sleeves are preferably flush with the surface of the reflector which faces the cover.
  • the reflector protrudes laterally beyond the antenna. This has the advantage of favorable radiation characteristics.
  • the backing part has a receiving space for the RFID module.
  • This has the advantage that the RFID module and antenna module are arranged in a common backing part. A short antenna cable is thus possible and only a single connection from the back part to the outside, namely from the RFID module, for example to a control unit or to a voltage supply, is required.
  • the RFID module has a housing which is clipped into the backing part via a snap mechanism. This has the advantage of simple handling during assembly.
  • the circuit board is snapped into the housing of the RFID module. This has the advantage of simple handling during assembly.
  • the backing part is foamed into the insulation material. This has the advantage that with a foaming process to manufacture the housing of the refrigerator, a space for the subsequent installation of the antenna module and, if appropriate, the RFID module is kept free.
  • a seal made of a plastic material, preferably a thermoplastic elastomer, is arranged between the sheet metal wall of the outer casing and the cover. This achieves the advantage of reliable protection against the ingress of moisture from outside.
  • Fig. 1 is a schematic perspective view of a household refrigerator with a heat insulated body and with an antenna assembly according to the invention
  • Fig. 2 is a schematic sectional view of an antenna assembly according to the invention in a ceiling of a household refrigerator.
  • Fig. 1 shows a refrigerator representative of a general household refrigerator 100 with a refrigerator door 101 for closing a coolable interior 103 of the household refrigerator 100 and with a heat-insulated wall 105, the inner container 107 facing the coolable interior 103, an outer shell 109 made of metal and one between the inner container 107 and the outer casing 109 arranged thermal insulation.
  • the household refrigeration device 100 has a recess 11 1 in a ceiling 110 with an RFID module 113 and an antenna module 115.
  • the domestic refrigeration device 100 comprises one or more refrigerant circuits, each with a refrigerant evaporator, refrigerant compressor, refrigerant condenser and throttle element.
  • FIG. 2 schematically shows an antenna module 10 and an RFID module 12 in a ceiling 14 of a housing 15 of a refrigeration device 16.
  • the antenna assembly 10 has an antenna 20 and a reflector 22.
  • the antenna 20 is mounted on the reflector 22 at a first distance.
  • the antenna module 10 is mounted at a second distance on the housing 15 of the refrigeration device 16.
  • the antenna module 10 is mounted on a backing part 24.
  • the backing part 24 is arranged on the housing 15 of the refrigeration device 16 from above / outside.
  • the antenna assembly 10 is arranged in a recess 26 in a sheet metal wall 28 of the outer shell of the housing 15.
  • a metal cover 30 is arranged on the housing 15 above the backing part.
  • the connection of the cover 30 to the housing 15 is formed in such a way that there is no gap between the cover 30 and the housing 15 in order to be sealed against radio waves.
  • a seal 32 made of a thermoplastic elastomer is arranged against water ingress.
  • the reflector 22 projects laterally beyond the antenna 20.
  • the reflector 22 is designed as a radiation plate.
  • the antenna 20 has a PCB 34 with a metal layer 36 on an underside facing away from the reflector 22 and a metal layer 38 on an upper side of the PCB 34.
  • the metal layer 36 has a frame-like interruption 40 at two locations, so that insulation is provided with respect to an outer surface 42 Coupling surfaces 44 arise.
  • the frame-like interruption 40 and the isolated coupling-in surfaces 44 are rectangular here.
  • An antenna cable 46 is designed as a coaxial cable 48 with a core 50 and a shield 52.
  • the core 50 of a coaxial cable 48 in each case is connected to the two metal layers 36, 38 of the PCB at the insulated areas 44 with soldering points 54.
  • the shield 52 of the or each antenna cable 46 is connected to the reflector 22 by means of a clamp 56.
  • a port 58 for coupling an RFID signal comprises the connections of the core 50 to the isolated coupling surfaces 44 of the antenna and the shield 52 of an antenna cable 46 on the reflector 22.
  • the antenna module 10 is connected via two ports 58, each with an antenna cable 46, to the RFID module 12 by means of a two-pin connector 60.
  • An antenna 20 is mounted on the reflector 22 with spacer sleeves 62 and screws 64.
  • the spacer sleeves 62 are made of a plastic tube and are placed over short threaded sleeves 66.
  • the threaded sleeves 66 are pressed onto the reflector 22 and are flush at the top.
  • the screws 64 are made of plastic and have a screw head 68 with a defined thickness.
  • the screw head 68 can rest on the backing part 24. This results in a defined minimum distance between backing part 24 and antenna 20.
  • the antenna 20 is connected to the spacer sleeve 63 and a metallic screw 65 to the reflector 22.
  • the screw engages in a threaded sleeve 67, which is pressed onto the reflector 22 and is flush on the upper side thereof.
  • the screw head 69 of the metallic screw 65 lies in the outer surface 42 of the PCB 34 on the metal layer 36 of the underside of the PCB 34 facing away from the reflector 22.
  • the backing part 24 has a mounting surface 71 in a first level for mounting the backing part 24 on an outer shell 94, a reference surface 72 in a second level for positioning the antenna assembly 10 with respect to the outer shell 94 and a bottom surface 73 in a third level Bottom 80 of a recess 76 for the antenna assembly 10.
  • the antenna module 10 can be positioned with respect to the outer shell 94 in that it is ensured that the screw heads 68 rest on the base surface 73 on the backing part 24.
  • the reflector 22 is provided with preassembled spacer domes 70 which define a spacing from a reference surface 72 of the backing part 24.
  • the reflector 22 is fastened to the backing part 24 from above with screws (not shown).
  • the reflector 22 is fastened on an intermediate plane 74 of the backing part 24, the surfaces of which define the reference mounting surfaces 72 of the backing part 24.
  • the backing part 24 has two installation recesses 76, 78 with a flat bottom 80, 82 for the antenna assembly 10 and the RFID module 12.
  • the RFID module 12 has module housing 84, which is positioned in the backing part 24 via a snap mechanism 86.
  • the RFID module 12 has a circuit board 90 to which the antenna cable 46 is connected. This is advantageous when installing the refrigerator. For example, the antenna cable can be connected to the board with a two-pin connector.
  • a heat-insulated wall 93 has an inner container 92 and the outer casing 94. Between an inner container 92 and the outer casing 94, thermal insulation 96 with an insulation foam 91 138 is arranged.
  • the outer shell 94 has a sheet metal wall 28 with a recess on which the backing part is arranged on the recess. The backing part 24 lies against the housing 15 of a refrigeration device 16 and is foamed into the insulation foam 98.
  • Backing part 72 reference surface recess 74 intermediate level sheet metal wall 76, 78 recess recess cover 80, 82 bottom

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne un appareil de froid ménager (100) présentant un espace intérieur (103) pouvant être refroidi pour le stockage d'aliments, une paroi (93, 105) isolée thermiquement et un ensemble d'antennes (10, 115) relié à un module RFID (12, 113). La paroi (93, 105) isolée thermiquement comprend un contenant intérieur (92, 107) tourné vers l'espace intérieur (103) pouvant être refroidi, une enveloppe extérieure (94, 109) en métal et une isolation thermique (96) disposée entre le contenant intérieur (92, 103) et l'enveloppe extérieure (94, 109). L'enveloppe extérieure (94, 109) présente une paroi en tôle (28) pourvue d'un évidement (26), une partie d'intégration arrière (24) est disposée sur l'évidement (26), l'ensemble d'antennes (10, 115) est disposé dans la partie d'intégration arrière (24), et l'enveloppe extérieure (94, 109) présente un couvercle (30) en métal, qui est disposé à l'extérieur au-dessus de l'évidement (26). L'ensemble d'antennes (10, 115) présente un réflecteur (22) et une antenne (20) disposée parallèlement à celui-ci.
PCT/EP2019/069870 2018-07-31 2019-07-24 Appareil de froid ménager pourvu d'un ensemble d'antennes WO2020025409A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980050639.1A CN112513549A (zh) 2018-07-31 2019-07-24 具有天线组件的家用制冷器具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018212717.4 2018-07-31
DE102018212717.4A DE102018212717A1 (de) 2018-07-31 2018-07-31 Haushaltskältegerät mit einer Antennenbaugruppe

Publications (1)

Publication Number Publication Date
WO2020025409A1 true WO2020025409A1 (fr) 2020-02-06

Family

ID=67402951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/069870 WO2020025409A1 (fr) 2018-07-31 2019-07-24 Appareil de froid ménager pourvu d'un ensemble d'antennes

Country Status (3)

Country Link
CN (1) CN112513549A (fr)
DE (1) DE102018212717A1 (fr)
WO (1) WO2020025409A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020215336A1 (de) 2020-12-04 2022-06-09 BSH Hausgeräte GmbH Haushaltskältegerät mit spezifischen Verbau eines Antennenmoduls im Boden des Gehäuses

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1666820A1 (fr) 2004-11-30 2006-06-07 Samsung Electronics Co., Ltd. Réfrigérateur ayant une disposition améliorée des lecteurs de puces RFID
US20120019394A1 (en) * 2010-07-22 2012-01-26 Hm Energy Llc Surface acoustic wave transponder package for down-hole applications
US20140125529A1 (en) * 2012-11-08 2014-05-08 Samsung Electronics Co., Ltd. Antenna device and electronic appliance having the same
DE102013216763A1 (de) 2013-08-23 2015-02-26 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einem Funkmodul
DE102017212174A1 (de) * 2017-07-17 2019-01-17 BSH Hausgeräte GmbH Haushaltskältegerät mit einer Antennenvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4323440B2 (ja) * 2005-02-10 2009-09-02 アルプス電気株式会社 アンテナ装置
CN206291579U (zh) * 2016-11-17 2017-06-30 青岛海尔特种电冰箱有限公司 具有射频识别功能的冷藏冷冻装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1666820A1 (fr) 2004-11-30 2006-06-07 Samsung Electronics Co., Ltd. Réfrigérateur ayant une disposition améliorée des lecteurs de puces RFID
US20120019394A1 (en) * 2010-07-22 2012-01-26 Hm Energy Llc Surface acoustic wave transponder package for down-hole applications
US20140125529A1 (en) * 2012-11-08 2014-05-08 Samsung Electronics Co., Ltd. Antenna device and electronic appliance having the same
DE102013216763A1 (de) 2013-08-23 2015-02-26 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einem Funkmodul
DE102017212174A1 (de) * 2017-07-17 2019-01-17 BSH Hausgeräte GmbH Haushaltskältegerät mit einer Antennenvorrichtung

Also Published As

Publication number Publication date
DE102018212717A1 (de) 2020-02-06
CN112513549A (zh) 2021-03-16

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