EP0062312A2 - Procédé pour le fonctionnement de meubles de vente réfrigérés - Google Patents

Procédé pour le fonctionnement de meubles de vente réfrigérés Download PDF

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Publication number
EP0062312A2
EP0062312A2 EP82102779A EP82102779A EP0062312A2 EP 0062312 A2 EP0062312 A2 EP 0062312A2 EP 82102779 A EP82102779 A EP 82102779A EP 82102779 A EP82102779 A EP 82102779A EP 0062312 A2 EP0062312 A2 EP 0062312A2
Authority
EP
European Patent Office
Prior art keywords
temperature sensor
thermostat
temperature
heating
furniture
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP82102779A
Other languages
German (de)
English (en)
Other versions
EP0062312A3 (en
EP0062312B1 (fr
Inventor
Fritz Reininger
Gerd Böckmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Priority to AT82102779T priority Critical patent/ATE14345T1/de
Publication of EP0062312A2 publication Critical patent/EP0062312A2/fr
Publication of EP0062312A3 publication Critical patent/EP0062312A3/de
Application granted granted Critical
Publication of EP0062312B1 publication Critical patent/EP0062312B1/fr
Expired legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0478—Control or safety arrangements
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
    • F25B2700/21173—Temperatures of an evaporator of the fluid cooled by the evaporator at the outlet

Definitions

  • the invention relates to a method for operating cooled sales furniture with a thermostat having a temperature sensor for detecting the room temperature within the cooled sales furniture.
  • the invention is therefore based on the object of providing an inexpensive and simple temperature control which can also be used to save energy. This object is achieved in that the temperature sensor of the thermostat is electrically heated during the sales period.
  • the temperature within the goods zone is kept at the same value in daytime operation as before, while in nighttime operation the temperature is raised slightly compared to the previous method.
  • a higher temperature is simulated by the electrical heating during the sales times on the temperature sensor and at the same time the thermostat is adjusted so that the desired cooling temperature prevails in the goods room.
  • the heating of the temperature sensors is switched off so that it measures the real temperature.
  • the thermostat operates at a slightly higher temperature, so that the cooling temperature in the store also rises by a few degrees.
  • the method according to the invention saves energy because less cooling power is required and also prevents the goods from freezing.
  • the heating of the temperature sensor is switched on and off together with the furniture and / or shop lighting.
  • the heating of the temperature sensor can also be switched off when a roller blind serving as a night cover is actuated.
  • a device for carrying out the method according to the invention has, inter alia, a thermostat equipped with a temperature sensor.
  • the temperature sensor is provided with a heating element designed as a heating resistor.
  • the heating resistor is connected to a low-voltage source via a transformer and a relay, and the transformer and the relay are arranged outside the cooling zone and with the electrical device which switches on or off together with the heating of the temperature sensor, such as store and / or furniture lighting or night cover.
  • the method according to the invention and the associated device can be applied to all refrigeration and freezer units.
  • the figure shows in cross section an open refrigerated display case, which is described in the example as a cooling shelf 1.
  • the cooling shelf 1 has a refrigerator body 2 made of a heat-insulating material, which is designed in its lower part as a tub.
  • a cover 3 separates a goods room 4, which has a plurality of brackets 5 for storing goods to be cooled, from the interior 6 of the tub, in which an evaporator 7 of a thermostat and as a device for air delivery, a fan 8 are arranged.
  • the fan 8 is used for air circulation, the air first flowing past the evaporator 7, which is part of a refrigeration cycle, then via an air duct on the rear wall of the freezer upwards and between the brackets and flows down at the front of the brackets as a cold air curtain .
  • the air flow is indicated by arrows 9.
  • the cooling shelf 1 has a roller blind 10.
  • a temperature sensor 11 of the thermostat is inside the cooling zone of the goods room 4, for example on that shown Place, attached.
  • this temperature sensor 11 is provided with a heating element designed as a heating resistor. Since the heating element is in the wet area of the cooling shelf, the heating resistor is usually installed in a potted form. As an additional safeguard and to save energy, the heating resistor is fed with low current (e.g. 12 V).
  • a required transformer and a relay which are installed together in a housing 12, are mounted in a suitable place outside the cooling zone or the wet area and connected to, for example, the switch for the furniture and / or shop lighting. The heating of the temperature sensor 11 can also be actuated via a timer.
  • the temperature sensor 11 is e.g. 0.2 W heated. In this way, a temperature which is higher by, for example, 2 to 4 ° C. is simulated on the temperature sensor 11.
  • the thermostat or evaporator 7 is adjusted so that the cooling air with a temperature of z. B. -3 ° C in the air duct on the rear wall, whereby the desired temperature within the goods room 4, which has the same value as before, for example + 5 ° C, is set.
  • the heating of the temperature sensor 11 is switched off, for example, together with the furniture and / or shop lighting or when the night cover is actuated, and the temperature sensor 11 measures the actual temperature.
  • the thermostat or evaporator 7 operates at a temperature that is a few degrees higher, so that the cooling air heats up into the air shaft, for example at 0 ° C.
  • the slightly warmed cooling air the same temperature prevails in the goods room 4 as during the sales times, since when the roller blind is closed, no heat is emitted to the surroundings and therefore less cold air is sufficient for the same To generate cooling temperature.
  • the measure according to the invention prevents the goods, for example milk, from freezing due to the temperature drop as a result of the night cover. Since less cooling capacity is required in the case of night coverage in order to generate the same cooling temperature, the method according to the invention also achieves considerable energy savings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Vending Machines For Individual Products (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
EP82102779A 1981-04-03 1982-04-01 Procédé pour le fonctionnement de meubles de vente réfrigérés Expired EP0062312B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102779T ATE14345T1 (de) 1981-04-03 1982-04-01 Verfahren zum betreiben gekuehlter verkaufsmoebel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813113542 DE3113542A1 (de) 1981-04-03 1981-04-03 Verfahren zum betreiben gekuehlter verkaufsmoebel
DE3113542 1981-04-03

Publications (3)

Publication Number Publication Date
EP0062312A2 true EP0062312A2 (fr) 1982-10-13
EP0062312A3 EP0062312A3 (en) 1983-05-25
EP0062312B1 EP0062312B1 (fr) 1985-07-17

Family

ID=6129294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102779A Expired EP0062312B1 (fr) 1981-04-03 1982-04-01 Procédé pour le fonctionnement de meubles de vente réfrigérés

Country Status (3)

Country Link
EP (1) EP0062312B1 (fr)
AT (1) ATE14345T1 (fr)
DE (2) DE3113542A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000075743A1 (fr) * 1999-06-04 2000-12-14 Arçelik A.Ş. Appareil de chauffage pour thermostat

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613610A1 (de) * 1986-04-22 1987-10-29 Linde Ag Kuehlmoebel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1897945U (de) * 1964-05-25 1964-08-06 Amberger Kuehlanlagen Maschine Kuehlmoebel.
DE1501265A1 (de) * 1966-09-10 1969-09-18 Walter Holzer Thermostat fuer Kuehlschraenke und Anordnung des Thermostaten
US3465536A (en) * 1968-11-18 1969-09-09 Dual Jet Refrigeration Co Removable cover for access opening of refrigerated cabinet
DE1946259B2 (de) * 1969-09-12 1976-10-07 Kuehlmoebel, insbesondere kuehltruhe
US3727419A (en) * 1971-06-16 1973-04-17 Whirlpool Co Refrigerator control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000075743A1 (fr) * 1999-06-04 2000-12-14 Arçelik A.Ş. Appareil de chauffage pour thermostat

Also Published As

Publication number Publication date
EP0062312A3 (en) 1983-05-25
DE3264743D1 (en) 1985-08-22
ATE14345T1 (de) 1985-08-15
EP0062312B1 (fr) 1985-07-17
DE3113542A1 (de) 1982-10-21

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