WO2002031453A1 - Appareil frigorifique a capteur de temperature - Google Patents

Appareil frigorifique a capteur de temperature Download PDF

Info

Publication number
WO2002031453A1
WO2002031453A1 PCT/EP2001/011350 EP0111350W WO0231453A1 WO 2002031453 A1 WO2002031453 A1 WO 2002031453A1 EP 0111350 W EP0111350 W EP 0111350W WO 0231453 A1 WO0231453 A1 WO 0231453A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
infrared sensor
interior
sensor
refrigerating
Prior art date
Application number
PCT/EP2001/011350
Other languages
German (de)
English (en)
Inventor
Alexander Walter
Original Assignee
BSH Bosch und Siemens 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 Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to EP01974320A priority Critical patent/EP1327127A1/fr
Priority to JP2002534789A priority patent/JP2004511764A/ja
Priority to AU2001293859A priority patent/AU2001293859A1/en
Priority to KR10-2003-7004206A priority patent/KR20030040487A/ko
Priority to PL01360730A priority patent/PL360730A1/xx
Priority to BR0114244-5A priority patent/BR0114244A/pt
Publication of WO2002031453A1 publication Critical patent/WO2002031453A1/fr
Priority to US10/411,600 priority patent/US20040003611A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/041—Mountings in enclosures or in a particular environment
    • 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
    • F25D2700/12—Sensors measuring the inside temperature
    • 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
    • F25D29/005—Mounting of control devices

Definitions

  • the invention relates to a refrigerator with a temperature sensor for detecting an operating temperature of the refrigerator.
  • temperature-dependent resistors are conventionally used in refrigeration devices such as refrigerators, freezers or combination devices, which are connected via a wiring harness to a control circuit for regulating the cooling operation.
  • Wiring is required to route the measurement signal from the temperature-sensitive resistor to the control circuit. This wiring is sensitive to interference from electromagnetic interference.
  • the detected temperature is not necessarily that of the location to be monitored, but the temperature that arises in the temperature-sensitive resistor. In order to avoid falsification of the temperature measurement, it is therefore necessary to insulate it well against the uncooled outside area.
  • the object of the present invention is to provide a refrigeration device with a temperature sensor, in which the assembly of the temperature sensor is simplified, in which the sensitivity of the measurement signal of the temperature sensor to electromagnetic interference is reduced, and in which a failure due to thermal loads is excluded.
  • the operating temperature to be detected with the infrared sensor of this refrigerator can be an interior temperature of the refrigerator.
  • a black body can be provided in the interior of the refrigerator, with which the infrared sensor is in eye contact.
  • the temperature of an evaporator of the refrigerator can also be used as the operating temperature to be measured.
  • the infrared sensor is preferably in eye contact with a surface of the evaporator facing the interior of the refrigeration device. This allows the temperature of this surface of the evaporator, which is relevant for the cooling of the interior, to be measured directly, instead of the temperature of the rear, which is easier to achieve when measuring with a temperature-sensitive resistor, but which may be falsified by the influx of heat from the outside.
  • the infrared sensor does not have to be arranged in direct contact with the object whose temperature it is to measure, it is possible to arrange it in the immediate vicinity of the control circuit, in particular on a common circuit board with the control circuit; the control circuit and the temperature sensor can be prefabricated as a single unit and can be installed together in the refrigeration device according to the invention during assembly.
  • the temperature of the infrared sensor is not decisive for the measurement result, it can be installed in an uncooled outside area of the refrigerator. In such a case, it is desirable for it to be separated from a measurement area to be monitored by an infrared-transmissive window which blocks an unimpeded flow of heat into the interior of the refrigerator. If the distance between the infrared sensor and the measuring surface to be monitored by it is large, it is desirable that a lens is provided between the two for imaging the measuring surface onto a radiation-sensitive surface of the sensor. This lens can in particular form the window mentioned above at the same time.
  • FIG. 1 shows a schematic section through part of the housing of a refrigerator according to the invention in accordance with a first embodiment of the invention
  • Fig. 2 shows an analog section according to a second embodiment of the invention.
  • FIG. 1 shows a highly schematic section through the upper front corner of the housing of a refrigeration device according to the invention.
  • the refrigerator comprises a thermally insulating housing, of which part of an upper side 1 and a front side 2 with a door 3 mounted thereon can be seen in FIG. 1.
  • a panel 4 is mounted on the front side 2, which can be a simple plastic molded part without its own significant thermal insulation effect.
  • an infrared sensor 7 In the space enclosed by the panel 4 and the front side 2, a control circuit and, on its surface facing the interior 6 of the refrigerator, an infrared sensor 7 are mounted on a circuit board 5.
  • Such an infrared sensor can detect the intensity of infrared radiation in different spectral ranges and, based on the intensity distribution, allow conclusions to be drawn about the temperature of the radiation source.
  • This infrared sensor can e.g. B. be of a similar type to those z. B. in so-called "ear thermometers" for body temperature measurement.
  • the infrared radiation from inside a refrigerator is significantly weaker and on average longer than that of a human body, on the other hand, the requirements for measurement accuracy when controlling a refrigerator are significantly lower than in the Body temperature measurement, so that such an infrared sensor is also considered suitable for regulating a refrigerator.
  • the attachment of the board 5 with the control circuit in the front area of the refrigerator has the advantage that it is possible to mount on the board 5 display elements such as a light-emitting diode 8, which are visible to a user through a window 9 of the panel 4, so that who can easily convince the proper functioning of the refrigerator at any time.
  • regulators e.g. B. for setting a target temperature of the interior, can be mounted directly on the board 5 and are still easily accessible to a user.
  • the infrared sensor 7 is opposite a window 10 made of an infrared-permeable material which is let into the front side 2 and through which the characteristic heat radiation of a black body 11 mounted in the interior 6 can fall onto the radiation-sensitive surface of the infrared sensor 7 essentially unhindered.
  • this black body 11 With the help of this black body 11, it is possible to specifically measure the temperature in a critical area of the interior 6. Especially the front upper area of the interior 6, where the black body 11 is shown in the figure, is such an area, since here due to the heat flow into the interior 6, which is strongest along the edges of the door 3, in the Usually set the highest temperatures in the interior.
  • the black body 11 so that the infrared sensor 7 has a "free view" of the interior 6 through the window 10.
  • This interior 6 also has the radiation characteristics of a black body in thermal equilibrium, so that if the black body 1 is left out, a temperature can be measured with the infrared sensor 7, which is averaged over the entire field of view of the infrared sensor 7.
  • the result of such an arrangement is the peculiarity that the measured values detected by the infrared sensor 7 can be "falsified", if there is refrigerated goods in its field of vision that has only recently been loaded into the refrigerator and has not yet reached its internal temperature.
  • the infrared radiation power of a body increases much more than linearly with its temperature.
  • Such “warm” refrigerated goods can therefore be sure of their cold surroundings.
  • the temperature detected by the infrared sensor is higher than an arithmetic mean of the temperature formed taking into account the “warm” refrigerated goods.
  • Such adulteration may be desirable here, however, because it makes it possible to regulate the cooling capacity of the refrigeration device well before the heat introduced with the new refrigerated goods has spread inside. In this way, heating of the interior by newly introduced, relatively warm refrigerated goods is reliably prevented without any complex circuitry measures being necessary for this.
  • FIG. 2 shows a section analogous to that of FIG. 1 through a further developed variant of a refrigeration device according to the invention.
  • FIG. 2 also shows a part of the rear wall 13 of its housing and an evaporator plate 14 arranged thereon.
  • the window 10 is replaced by a lens 15 which consists of the same material as the window 10 and can be embedded in a corresponding manner in the front 2 of the housing.
  • the lens 15 has the effect that the field of view 16 of the lens, which is delimited by broken lines in FIG. 2, is restricted in comparison to the embodiment from FIG. 1 and only covers a limited area 17 of the evaporator plate 14. With this arrangement, precise monitoring of the temperature of the evaporator plate 14 is possible across the interior 6.
  • the infrared sensor 7 Since the infrared sensor 7 is not exposed to the temperature fluctuations in the evaporator plate itself, its lifespan is not impaired thereby, and malfunctions in the operation of the refrigeration device are avoided.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Radiation Pyrometers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

Appareil frigorifique équipé d'un capteur d'infrarouge (7) en tant que capteur de température, en vue de la détection d'une température de fonctionnement de l'appareil. Le capteur d'infrarouge (7) est placé, avec un circuit de commande, sur un plateau, dans une partie non réfrigérée de l'appareil frigorifique.
PCT/EP2001/011350 2000-10-10 2001-10-01 Appareil frigorifique a capteur de temperature WO2002031453A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP01974320A EP1327127A1 (fr) 2000-10-10 2001-10-01 Appareil frigorifique a capteur de temperature
JP2002534789A JP2004511764A (ja) 2000-10-10 2001-10-01 温度センサを備えた冷却装置
AU2001293859A AU2001293859A1 (en) 2000-10-10 2001-10-01 Refrigerating device with a temperature sensor
KR10-2003-7004206A KR20030040487A (ko) 2000-10-10 2001-10-01 온도센서를 가진 냉각장치
PL01360730A PL360730A1 (en) 2000-10-10 2001-10-01 Refrigerating device with a temperature sensor
BR0114244-5A BR0114244A (pt) 2000-10-10 2001-10-01 Aparelho de refrigeração com sensor de temperatura
US10/411,600 US20040003611A1 (en) 2000-10-10 2003-04-10 Refridgerating device with a temperature sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10050074.9 2000-10-10
DE10050074A DE10050074A1 (de) 2000-10-10 2000-10-10 Kältegerät mit Temperatursensor

Publications (1)

Publication Number Publication Date
WO2002031453A1 true WO2002031453A1 (fr) 2002-04-18

Family

ID=7659229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/011350 WO2002031453A1 (fr) 2000-10-10 2001-10-01 Appareil frigorifique a capteur de temperature

Country Status (10)

Country Link
US (1) US20040003611A1 (fr)
EP (1) EP1327127A1 (fr)
JP (1) JP2004511764A (fr)
KR (1) KR20030040487A (fr)
CN (1) CN1220036C (fr)
AU (1) AU2001293859A1 (fr)
BR (1) BR0114244A (fr)
DE (1) DE10050074A1 (fr)
PL (1) PL360730A1 (fr)
WO (1) WO2002031453A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1482264A1 (fr) * 2003-05-09 2004-12-01 C.R.F. Società Consortile per Azioni Réfrigérateur avec contrôle amelioré de la température
DE102017113246A1 (de) 2017-06-16 2018-12-20 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2008000705A1 (es) * 2007-03-12 2008-08-22 Lma Medical Innovations Ltd Aparato para el manejo de la temperatura consistente en un cojin termico que comprende un elemento calefactor acoplado a la superficie calefactora del cojin termico, una unidad de potencia operativa, una pluralidad de sensores superficiales de temper
DE102009036089A1 (de) * 2009-08-04 2011-02-17 Wmf Württembergische Metallwarenfabrik Ag Einrichtung zur Bevorratung von Milch
EP2503322B1 (fr) * 2011-03-25 2016-03-09 Detlev Gertitschke Dispositif de vérification de petits produits pharmaceutiques
CN103673495A (zh) * 2012-09-25 2014-03-26 海尔集团公司 一种冰箱照明装置及方法
US9408939B2 (en) 2013-03-15 2016-08-09 Medline Industries, Inc. Anti-microbial air processor for a personal patient warming apparatus
CN106642977B (zh) * 2016-12-27 2019-12-13 Tcl集团股份有限公司 一种变频方法和装置
CN110031111A (zh) * 2019-04-24 2019-07-19 中国科学院云南天文台 一种用于天文选址的中红外大气辐射探测***
CN112984947B (zh) * 2021-03-08 2021-11-02 上海绿联智能科技股份有限公司 冰箱的温度控制方法、装置及智能控制存储介质

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509389A1 (de) * 1984-05-28 1985-11-28 VEB dkk Scharfenstein, DDR 9366 Scharfenstein Temperatursensorsystem fuer haushaltkaeltegeraete

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Publication number Priority date Publication date Assignee Title
US4671458A (en) * 1985-02-25 1987-06-09 Kabushiki Kaisha Toshiba Air conditioning apparatus
US4891952A (en) * 1987-07-22 1990-01-09 Sharp Kabushiki Kaisha Freezer-refrigerator
US5772326A (en) * 1996-08-30 1998-06-30 Hubbell Incorporated Temperature and passive infrared sensor module
US6279832B1 (en) * 1999-03-31 2001-08-28 Melexis Nv Temperature control system
JP3800900B2 (ja) * 1999-09-09 2006-07-26 三菱電機株式会社 冷凍冷蔵庫、冷凍冷蔵庫の運転方法
US6625997B1 (en) * 2001-10-26 2003-09-30 Delphi Technologies, Inc. Automotive air conditioning system
US6694758B1 (en) * 2002-08-14 2004-02-24 Lg Electronics Inc. Apparatus and method for controlling concentrated cooling of refrigerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509389A1 (de) * 1984-05-28 1985-11-28 VEB dkk Scharfenstein, DDR 9366 Scharfenstein Temperatursensorsystem fuer haushaltkaeltegeraete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1482264A1 (fr) * 2003-05-09 2004-12-01 C.R.F. Società Consortile per Azioni Réfrigérateur avec contrôle amelioré de la température
DE102017113246A1 (de) 2017-06-16 2018-12-20 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Also Published As

Publication number Publication date
CN1220036C (zh) 2005-09-21
AU2001293859A1 (en) 2002-04-22
US20040003611A1 (en) 2004-01-08
CN1469992A (zh) 2004-01-21
BR0114244A (pt) 2003-10-07
EP1327127A1 (fr) 2003-07-16
DE10050074A1 (de) 2002-04-18
PL360730A1 (en) 2004-09-20
JP2004511764A (ja) 2004-04-15
KR20030040487A (ko) 2003-05-22

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