NL8502473A

NL8502473A - Refrigerator with eutectic plate heat exchanger - uses gas evaporation system which only requires compressor power once or twice per day

Info

Publication number: NL8502473A
Application number: NL8502473A
Authority: NL
Original assignee: Jacobus Maria Joannus Kochx
Priority date: 1985-09-10
Filing date: 1985-09-10
Publication date: 1987-04-01

Abstract

At the rear of the cooled cavity, which has a volume of 20 litres or more, is a eutectic plate. The plate contains a 'solid solution' in which the freezing of the water concentrates the strength of the other constituent of the solution. The plate is pierced by a network of tubes which carry the refrigerant gas. The gas passes to a condenser on the rear wall of the refrigerator. The condenser is not of the normal grid type, but is a plate contg. quantities of material which melts to absorb the heat transferred from the inside cavity. The eutectic plate freezes in about 1.5 hours, during which the compressor is running, and melts in about 12 hours, when no power is consumed. The compressor is operated by a thermostatic clock.

Description

Koeik-ast met gebruikmaking \.an een eutectische plaat een condensor met meebouwde atsmeitelementen. een thermostaatkiok die ervoor zorgt dat de compressor slechts enkele malen oer etmaal aanslaat.Cow-ast using a eutectic plate a condenser with co-built elements. a thermostat cook that ensures that the compressor only starts a few times a day.

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Ad. I * 1 Dit systeem werkt met platen waarin zich een eutectische oplossing bevindt.Ad. I * 1 This system works with plates containing a eutectic solution.

Deze hebben de eigenschap dat wanneer de concentratie kleiner is dan de eutectische concentratie hier eerst het water uitvriest, waardoor de concentratie van de overblijvende vloeistof toeneemt tot de eutectische concentratie.These have the property that when the concentration is smaller than the eutectic concentration, the water here first freezes out, so that the concentration of the remaining liquid increases to the eutectic concentration.

2 Is de concentratie sterker dan de eutectische concentratie, dan kristalliseert eerst de oplosser uit totdat de eutectische concentratie is bereikt.2 If the concentration is stronger than the eutectic concentration, the dissolver first crystallizes out until the eutectic concentration is reached.

Deze koelkast gaat uit van het principe dat de eutectische plaat welke een koelvloeistof bevat bevriest en daarna door inwendig afsmelten van de plaat de koelkast op temperatuur houdt.This refrigerator is based on the principle that the eutectic plate containing a cooling liquid freezes and then keeps the refrigerator at temperature by melting the plate internally.

3 De eutectische plaat werkt in combinatie met de verdamper, waarbij de constructie zodanig is dat de verdamper in de eutectische plaat is gebracht, waardoor de warmte-overdracht zo optimaal mogelijk is.3 The eutectic plate works in combination with the evaporator, the construction of which is such that the evaporator is placed in the eutectic plate, so that the heat transfer is optimal.

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De condensor bestaat niet zoals de huidige types uit een rasterwerk, doch uit Ψ een plaat waarin zich ruimten bevinden, opgevuld met een stof die afsmelt en zodoende de warmte opneemt die aan de eutectische plaat ontrokken wordt, hetgeen als voordeel met zich meebrengt : - een kleine condensor.The condenser, like the current types, consists of a grid, but of a plate in which there are spaces, filled with a substance that melts and thus absorbs the heat that is extracted from the eutectic plate, which has the advantage: - a small condenser.

- een zeer stabiele en lagere condensor druk.- a very stable and lower condenser pressure.

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De eutectische plaat bevriest in 11/2 uur en smelt in ongeveer 12 uren af.The eutectic plate freezes in 11/2 hours and melts in about 12 hours.

Door middel van een instelbare klok, wordt ervoor gezorgd dat de koelkast in de avond of nacht niet aanslaat, hetgeen een groot geluidscomfort voor bewoners van kleine ruimten met zich meebrengt.By means of an adjustable clock, it is ensured that the refrigerator does not start in the evening or at night, which provides a great sound comfort for residents of small spaces.

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Claims

1 The elaboration concerns:

1 Installing in a refrigerator, content 20 ltr. and larger, from a eutectic plate.

2 Melting substances by condensing gases; so an entirely 2 new type of condenser.

3 The use of an adjustable clock thermostat that ensures that the refrigerator does not start in the evening or at night, while the same refrigerator continues to fulfill its cooling function. Ψ The above findings and / - or applications individually or in combination - 3 possibilities with each other in refrigerators containing 20 ltr. and bigger. The purpose of the application of said inventions is: a High efficiency improvement. b Significant energy savings compared to current compression and absorption 4 systems. c Low noise compared to current cooling systems. Ad. a Efficiency is improved by increasing the evaporation temperature.

5 The suction temperature, which is normally - 33 ° C, for an eutectic plate is approximately - 10 ° C. This means a considerable improvement in yield. Ad. b

6 The energy savings are achieved on the one hand by the higher evaporation temperature and on the other hand by the lower condensation temperature. Ad. c The adjustable clock thermostat, mentioned earlier, ensures that the refrigerator no longer switches on in the evening or night, which gives spacious sound comfort in a small space (sitting-bedroom or room-suite). I may also point out that the compressor, because it only starts a few times per 24 hours, lasts longer because it avoids additional wear. 8502 4 73