ES2266001T3 - A DEFROSTING METHOD AND A COOLING DEVICE THAT USES THE SAME. - Google Patents
A DEFROSTING METHOD AND A COOLING DEVICE THAT USES THE SAME. Download PDFInfo
- Publication number
- ES2266001T3 ES2266001T3 ES00978196T ES00978196T ES2266001T3 ES 2266001 T3 ES2266001 T3 ES 2266001T3 ES 00978196 T ES00978196 T ES 00978196T ES 00978196 T ES00978196 T ES 00978196T ES 2266001 T3 ES2266001 T3 ES 2266001T3
- Authority
- ES
- Spain
- Prior art keywords
- evaporator
- fresh food
- sub
- compartment
- refrigerant
- 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.)
- Expired - Lifetime
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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/021—Alternate defrosting
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
-
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
- F25D2317/0682—Two or more fans
-
- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
Description
Un método de descongelación y un aparato de refrigeración que usa el mismo.A defrosting method and an apparatus for cooling that uses the same.
La presente invención se refiere a un aparato de refrigeración que tiene múltiples compartimentos de refrigeración y a un método para descongelar dicho aparato de refrigeración.The present invention relates to an apparatus of refrigeration that has multiple cooling compartments and to a method for defrosting said refrigeration apparatus.
Un aparato de refrigeración típico tiene dos compartimentos separados que se mantienen a diferentes temperaturas, al menos un compresor para suministrar refrigerante, y uno o más evaporadores sobre los que el aire caliente de los compartimentos se hace circular mediante un ventilador. El ventilador extrae el aire caliente de los compartimentos y lo hace circular sobre las superficies del evaporador, y suministra aire más frió a los compartimentos. La circulación de aire caliente sobre los evaporadores da como resultado la acumulación de escarcha sobre el evaporador, y hace disminuir la eficiencia del refrigerador. Por lo tanto, la escarcha se funde periódicamente durante un ciclo de descongelación.A typical refrigeration appliance has two separate compartments that are kept at different temperatures, at least one compressor to supply refrigerant, and one or more evaporators on which the hot air in the compartments It is circulated by a fan. The fan removes the hot air from the compartments and circulates it over the evaporator surfaces, and supplies cooler air to the compartments The circulation of hot air over the evaporators result in the accumulation of frost on the evaporator, and reduces the efficiency of the refrigerator. For the Thus, the frost melts periodically during a cycle of defrosting
Durante el ciclo de descongelación, el compresor se detiene y se activa una fuente de calor. La fuente de calor usada habitualmente es un calentador por resistencia. El uso de calentadores por resistencia ha aumentado el consumo de energía. Además, la eficiencia de descongelación con calentadores de resistencia generalmente es muy baja, alrededor del 30%, lo que significa que la mayor parte de la energía se consume para calentar el compartimento en lugar de fundir la escarcha.During the defrost cycle, the compressor it stops and a heat source is activated. Heat source commonly used is a resistance heater. The use of Resistance heaters have increased energy consumption. In addition, defrosting efficiency with heaters resistance is generally very low, around 30%, which means that most of the energy is consumed to heat the compartment instead of melting the frost.
En la patente de Estados Unidos numero 5.406.805 se utilizan dos evaporadores diferentes para cada uno de los compartimentos. La descongelación del evaporador de alimentos frescos se consigue haciendo circular aire en el compartimento de alimentos frescos mediante el evaporador mediante un ventilador cuando el compresor esta desconectado. El proceso de descongelación de aire caliente únicamente es eficaz cuando el compresor está desconectado. Como el compresor está desconectado durante el periodo de descongelación, la temperatura en el compartimento de alimentos frescos y especialmente en el compartimento del congelador puede aumentar por encima de los límites permitidos debido a la mayor duración de la descongelación cuando se compara con la descongelación con calentadores por resistencia. Por lo tanto, para asegurar una descongelación eficaz se usa también un calentador por resistencia que disminuye los beneficios del aire de descongelación y aumenta también el coste.In U.S. Patent No. 5,406,805 two different evaporators are used for each of the compartments Defrosting the food evaporator fresh is achieved by circulating air in the compartment fresh food through the evaporator using a fan when the compressor is disconnected. Defrosting process Hot air is only effective when the compressor is disconnected. As the compressor is disconnected during the period defrosting, the temperature in the food compartment fresh and especially in the freezer compartment you can increase above the allowed limits due to the higher defrost duration when compared to defrost with resistance heaters. Therefore for ensure efficient defrosting a heater is also used by resistance that decreases the benefits of defrosting air and also increases the cost.
El objeto de esta invención es proporcionar un método para descongelar eficazmente un aparato de refrigeración y un aparato de refrigeración que usa el mismo.The object of this invention is to provide a method for effectively defrosting a refrigeration apparatus and a refrigeration device that uses it.
Una realización del método de descongelación y el refrigerador que usa el mismo, que se lleva a la practica para obtener dicho objeto de la invención se ilustra en los dibujos adjuntos, en los que;An embodiment of the defrosting method and the refrigerator that uses it, which is put into practice to obtaining said object of the invention is illustrated in the drawings attachments, in which;
La figura 1 es una vista esquemática de un circuito de refrigeración para un sistema en el que los evaporadores se disponen en serie;Figure 1 is a schematic view of a cooling circuit for a system in which evaporators they are arranged in series;
La figura 2 es una vista esquemática del
circuito de refrigeración para un sistema en el que los
evaporadores se disponen en paralelo;Figure 2 is a schematic view of the cooling circuit for a system in which the
evaporators are arranged in parallel;
Los componentes usados en los dibujos se han enumerado individualmente de la siguiente manera:The components used in the drawings have been individually listed as follows:
-
1
\;
-one\;
- - CompresorCompressor
-
2
\;
-2\;
- - CondensadorCondenser
-
3
\;
-3\;
- - Filtro-secadorFilter-dryer
-
4a
\;
-4th\;
- - Tubo capilar para el primer sub-evaporadorCapillary tube for first sub evaporator
-
4b
\;
-4b\;
- - Tubo capilar para el segundo sub-evaporadorCapillary tube for second sub evaporator
-
4c
\;
-4c\;
- - Tubo capilar para el evaporador del congeladorCapillary tube for freezer evaporator
-
5
\;
-5\;
- - Tubería de succión del cambiador de calorSuction pipe heat exchanger
-
6
\;
-6\;
- - Evaporador del congeladorEvaporator of freezer
-
7
\;
-7\;
- - Ventilador del congeladorFan freezer
-
8
\;
-8\;
- - Válvula solenoideSolenoid valve
-
9
\;
-9\;
- - Ventilador de alimento frescoFood fan cool
-
10
\;
-10\;
- - Primer sub-evaporadorFirst sub evaporator
-
11
\;
-eleven\;
- - Segundo sub-evaporadorSecond sub evaporator
-
12
\;
-12\;
- - SeparadorSeparator
-
13
\;
-13\;
- - Bandeja de recogidaTray pick up
-
14
\;
-14\;
- - Tubería de succiónPipeline suction
-
15
\;
-fifteen\;
- - Orificio de recogida para el primer sub-evaporadorCollection hole for the first sub evaporator
-
16
\;
-16\;
- - Orificio de recogida para el segundo sub-evaporadorCollection hole for the second sub-evaporator
-
17
\;
-17\;
- - Compartimento del congeladorCompartment freezer
-
18
\;
-18\;
- - Compartimento de alimento frescoFood compartment cool
-
19
\;
-19\;
- - Válvula de retenciónValve retention
-
20
\;
-twenty\;
- - Evaporador de alimentos frescos.Food evaporator fresh.
Un aparato de refrigeración típico, refrigerado con la circulación de un refrigerante que tiene múltiples compartimentos de refrigeración, especialmente un compartimento de alimentos frescos (18) y un compartimento congelador (17), comprende un compresor (1) para presurizar el vapor refrigerante para aumentar la presión y la temperatura del refrigerante, un condensador (2) para condensar el refrigerante, un filtro-secador (3) para capturar la humedad y las impurezas del refrigerante, un tubo capilar (4) para disminuir la presión y, por lo tanto, la temperatura del refrigerante, un tubería de succión del cambiador de calor (5), un evaporador de alimentos frescos (20) para refrigerar el compartimento de alimentos frescos (18) y un ventilador de alimentos frescos (9) para hacer circular aire sobre el evaporador de alimentos frescos (20), un evaporador del congelador (6) para congelar el compartimento del congelador (17) y un ventilador del congelador (7) para hacer circular aire sobre el evaporador del congelador (6) y una tubería de succión (14) para hacer que el refrigerante vuelva al compresor (1).A typical refrigerated appliance with the circulation of a refrigerant that has multiple refrigeration compartments, especially a compartment of fresh food (18) and a freezer compartment (17), comprises a compressor (1) to pressurize the refrigerant vapor to increase the pressure and temperature of the coolant, a condenser (2) to condense the refrigerant, a filter-dryer (3) to capture moisture and coolant impurities, a capillary tube (4) to decrease the pressure and therefore the coolant temperature, a suction pipe heat exchanger (5), an evaporator fresh food (20) to refrigerate the food compartment fresh (18) and a fan of fresh food (9) to make circulate air over the fresh food evaporator (20), a freezer evaporator (6) to freeze the compartment of the freezer (17) and a freezer fan (7) to make circulate air over the freezer evaporator (6) and a pipe suction (14) to make the refrigerant return to the compressor (one).
El evaporador de alimentos frescos (20) y el evaporador del congelador (6) pueden disponerse tanto en serie como en paralelo. En la disposición en serie, el refrigerante circula en primer lugar a través de uno de los evaporadores y después a través del otro, mientras que en la disposición en paralelo, el refrigerante pasa a través de los evaporadores independientemente. Para enfriar los compartimentos (16 y 18) el compresor (1) se conecta y se desconecta. Si la temperatura del compartimento congelador (17) es alta, el compresor (1) y el ventilador del congelador (7) se conectan. Mientras el compresor (1) está encendido, si la temperatura del compartimento de alimento fresco (18) es alta, el ventilador de alimento fresco (9) se activa.The fresh food evaporator (20) and the freezer evaporator (6) can be arranged both in series and in parallel. In the series arrangement, the refrigerant circulates in first through one of the evaporators and then through of the other, while in parallel arrangement, the refrigerant passes through the evaporators independently. To cool the compartments (16 and 18) the compressor (1) is connect and disconnect. If the compartment temperature freezer (17) is high, the compressor (1) and the fan of the Freezer (7) connect. While the compressor (1) is on, if the temperature of the fresh food compartment (18) is high, the fresh food fan (9) is activated.
En la realización preferida de la presente invención, el evaporador del congelador (6) y el evaporador de alimento fresco (20) se disponen en serie. Por lo tanto, el refrigerante preferiblemente pasa en primer lugar a través del evaporador de alimento fresco (20) y después del evaporador del congelador (6).In the preferred embodiment of the present invention, the freezer evaporator (6) and the evaporator of Fresh food (20) are arranged in series. Therefore the refrigerant preferably passes first through the fresh food evaporator (20) and after evaporator freezer (6).
En el aparato de refrigeración de la presente invención, el evaporador de alimento fresco (20) está compuesto por más de un sub-evaporador que se disponen en paralelo. Preferiblemente, hay dos sub-evaporadores, es decir, un primer sub-evaporador (10) y un segundo sub-evaporador (11). Los sub-evaporadores (10 y 11) se disponen en paralelo y ambos sub-evaporadores (10 y 11) se usan secuencialmente para enfriar el compartimento de alimento fresco.In the refrigeration apparatus of the present invention, the fresh food evaporator (20) is composed of more than one sub-evaporator that are arranged in parallel. Preferably, there are two sub-evaporators, that is, a first sub-evaporator (10) and a second sub-evaporator (11). The sub-evaporators (10 and 11) are arranged in parallel and both sub-evaporators (10 and 11) are used sequentially to cool the food compartment cool.
El aparato de refrigeración comprende además un
separador (12) para aislar el primer sub-evaporador
(10) y el segundo sub-evaporador (11) entre sí, una
válvula de solenoide, preferiblemente un válvula
bi-estable, para dirigir el refrigerante a uno de
los sub-evaporadores (10 y 11) y dos tubos capilares
(4a y 4b) para hacer disminuir la presión y, por lo tanto, la
temperatura del refrigerante que se suministra al primer y segundo
sub-evaporadores (10 y 11) respectivamen-
te.The cooling apparatus further comprises a separator (12) to isolate the first sub-evaporator (10) and the second sub-evaporator (11) from each other, a solenoid valve, preferably a bi-stable valve, to direct the refrigerant to one of the sub-evaporators (10 and 11) and two capillary tubes (4a and 4b) to decrease the pressure and, therefore, the temperature of the refrigerant that is supplied to the first and second sub-evaporators (10 and 11) respectively
tea.
Durante un ciclo de refrigeración, el refrigerante es presurizado por el compresor (1) y se alimenta al condensador (2). Mediante el condensador (2), el refrigerante intercambia calor con el aire ambiente y se condensa. El refrigerante pasa después a través del filtro-secador (3) y la válvula de solenoide (8) dirige el refrigerante al sub-evaporador preferido (10 u 11) a través de los capilares respectivos (4a o 4b). Los capilares (4a y 4b) para crear intercambio de calor entre el tubo capilar (4) y la tubería de succión (14), pasa a través del cambiador de calor (5). Simultáneamente el ventilador del compartimento de alimento fresco (9) extrae aire caliente del compartimento de alimento fresco (18). El aire caliente pasa sobre los sub-evaporadores de alimento fresco (10 y 11), se enfría y después vuelve al compartimento de alimento fresco (18).During a refrigeration cycle, the refrigerant is pressurized by the compressor (1) and is fed to the condenser (2). Through the condenser (2), the refrigerant It exchanges heat with ambient air and condenses. He refrigerant then passes through the filter-dryer (3) and solenoid valve (8) directs the refrigerant to the preferred sub-evaporator (10 or 11) through the respective capillaries (4a or 4b). The capillaries (4a and 4b) to create heat exchange between the tube capillary (4) and suction pipe (14), passes through the heat exchanger (5). Simultaneously the fan of fresh food compartment (9) draws hot air from the Fresh food compartment (18). The hot air passes over fresh food sub-evaporators (10 and 11), cools and then returns to the fresh food compartment (18).
Después del evaporador de alimento fresco (20), el refrigerante pasa a través del evaporador del congelador (6), donde el compartimento del congelador se enfría mediante aire frío que se hace circular por el ventilador del congelador (7). El refrigerante pasa al cambiador de calor (5) y la tubería de succión (14). El refrigerante completa su ciclo cuando vuelve al compresor (1) de nuevo.After the evaporator of fresh food (20), the refrigerant passes through the freezer evaporator (6), where the freezer compartment is cooled by cold air which is circulated through the freezer fan (7). He refrigerant passes to the heat exchanger (5) and the suction pipe (14). The refrigerant completes its cycle when it returns to the compressor (1) again.
Durante el ciclo de refrigeración, el refrigerante se dirige a uno de los sub-evaporadores (10 y 11). La válvula de solenoide (8) para una duración de descongelación predeterminada y tdef1, dirige al refrigerante únicamente al primer sub-evaporador (10). Durante la circulación de aire sobre los sub-evaporadores (10 y 11) se acumula escarcha únicamente sobre la superficie del primer sub-evaporador (10) en el que se alimenta refrigerante a su través. Durante la duración de descongelación predeterminada tdef1, el ventilador de alimento fresco (9) esta funcionando, el aire caliente se hace circular sobre ambos sub-evaporadores (10 y 11). El aire caliente ayuda a descongelar el segundo sub-evaporador (11) que está en posición de reposo, es decir, el refrigerante no se alimenta a su través. Mientras, el aire caliente se enfría mediante el primer sub-evaporador (10). Durante la duración tdef1, se repiten las mismas etapas para descongelar el primer sub-evaporador (10). Durante este tiempo la válvula de solenoide (8) para la duración tdef2'' dirige el refrigerante únicamente al segundo sub-evaporador (11). Durante la circulación de aire sobre los evaporadores de alimento fresco (10 y 11), se acula escarcha únicamente sobre la superficie del segundo sub-evaporador (11) en el que alimenta refrigerante su través. Durante el la duración de descongelación tdef2 predeterminada si el ventilador de alimento fresco (9) está activo, el aire caliente se hace circular sobre ambos sub-evaporadores (10 y 11). El aire caliente se desplaza sobre el primer evaporador (10) y ayuda a fundir la escarcha. Mientras, el aire caliente se enfría mediante el segundo sub-evaporador (11).During the refrigeration cycle, the refrigerant is directed to one of the sub-evaporators (10 and 11). The solenoid valve (8) for a duration of default defrost and tdef1, directs the refrigerant only to the first sub-evaporator (10). During air circulation over sub evaporators (10 and 11) frost accumulates only on the surface of the first sub-evaporator (10) in which it feeds refrigerant through. During the defrost duration default tdef1, the fresh food fan (9) is running, hot air is circulated over both sub-evaporators (10 and 11). Hot air helps to defrost the second sub-evaporator (11) that is in the rest position, that is, the refrigerant is not feed through it. Meanwhile, the hot air is cooled by the first sub-evaporator (10). For the duration tdef1, the same steps are repeated to defrost the first sub-evaporator (10). During this time the valve solenoid (8) for duration tdef2 '' directs the refrigerant only to the second sub-evaporator (11). During air circulation over fresh food evaporators (10 and 11), frost is only acted on the surface of the second sub-evaporator (11) in which refrigerant feeds through During the defrost duration tdef2 default if the fresh food fan (9) is active, hot air is circulated over both sub-evaporators (10 and 11). Hot air is moves on the first evaporator (10) and helps to melt the Frost. Meanwhile, the hot air is cooled by the second sub-evaporator (11).
Como no se usan calentadores de resistencia adicionales u otros medios para descongelar, la duración de descongelación predeterminada se optimiza experimentalmente permitiendo la descongelación completa de los sub-evaporadores (10 u 11). Esto permite una refrigeración continua del compartimento de alimento fresco (18) y una descongelación del evaporador de alimento fresco (20) simultáneamente.As resistance heaters are not used additional or other means to defrost, the duration of default defrost is optimized experimentally allowing complete defrosting of sub-evaporators (10 or 11). This allows a continuous cooling of the fresh food compartment (18) and defrosting of the fresh food evaporator (20) simultaneously.
Los sub-evaporadores (10 y 11) se aíslan con el separador (12) que se prepara preferiblemente de estiro-espuma y se cubre con una lámina de aluminio que mantiene la humedad fuera del material de estiro-espuma y evitando problemas higiénicos. El separador (12) no interfiere con el flujo de aire aunque evita cortocircuitos de aire entre los evaporadores. El aire se hace circular siempre sobre ambos sub-evaporadores (10 y 11) independientemente de cual este funcionando. El separador (12) será suficientemente alto para establecer una barrera natural de manera que el aire frío no se mueva desde el otro lado y cree escarcha. Esta situación es probable que suceda ya que la temperatura del compartimento fresco (18) es baja, el ventilador de alimento fresco (9) está en posición desconectada y uno de los sub-evaporadores (10 y 11) todavía está funcionando. Debido al secador (12), el aire frío quedará atrapado en su volumen de manera que los problemas de congelación en el evaporador cercano se eliminarán.The sub-evaporators (10 and 11) they are isolated with the separator (12) which is preferably prepared from stretch-foam and cover with an aluminum foil that keeps moisture out of the material of stretch foam and avoiding hygienic problems. He separator (12) does not interfere with the air flow although it prevents short circuits between evaporators. The air is made always circulate on both sub-evaporators (10 and 11) regardless of which one is working. The separator (12) will be high enough to establish a natural barrier of so that the cold air does not move from the other side and creates Frost. This situation is likely to happen since the cool compartment temperature (18) is low, the fan of fresh food (9) is in the disconnected position and one of the Sub-evaporators (10 and 11) is still working. Due to the dryer (12), the cold air will be trapped in its volume so that the freezer problems in the nearby evaporator They will be deleted.
El aparato de refrigeración comprende además una bandeja de recogida (13) para recoger el agua descongelada durante la descongelación y dos orificios de recogida diferentes (15 y 16) para cada uno de los sub-evaporadores (10 y 11) para permitir una recogida fácil del agua sin afectar al otro.The refrigeration apparatus further comprises a collection tray (13) to collect defrosted water during defrosting and two different collection holes (15 and 16) for each of the sub-evaporators (10 and 11) to allow an easy collection of water without affecting the other.
En otra realización de la presente invención, el evaporador del congelador (6) y el evaporador de alimento fresco (20) se disponen en paralelo. Por lo tanto, el refrigerante pasa a través del evaporador de alimento fresco (20) o del evaporador del congelador (6). En la disposición en paralelo el aparato de refrigeración comprende además un tubo capilar (4c) para hacer disminuir la presión y temperatura del refrigerante que se suministra al evaporador del congelador (6) y una válvula de retención (19) para evitar el retroceso del flujo de refrigerante al evaporador del congelador (6).In another embodiment of the present invention, the freezer evaporator (6) and fresh food evaporator (20) are arranged in parallel. Therefore, the refrigerant passes to through the evaporator of fresh food (20) or the evaporator of the freezer (6). In parallel arrangement the apparatus of cooling also includes a capillary tube (4c) to make decrease the pressure and temperature of the refrigerant that supplies the freezer evaporator (6) and a valve retention (19) to prevent recoil of the refrigerant flow to the freezer evaporator (6).
En esta realización alternativa, el refrigerante después del filtro-secador (3) se dirige hacia el evaporador de alimento fresco (20) o al evaporador del congelador (6). El método de descongelación de los sub-evaporadores (10 y 11) es el mismo. El refrigerante después de dejar los sub-evaporadores (10 y 11) va directamente a la tubería de succión (14). Durante un ciclo de refrigeración, el refrigerante esta presurizado por el compresor (1) y se alimenta al condensador (2). A través del condensador (2), el refrigerante intercambia calor con el aire ambiente y se condensa. El refrigerante pasa después a través del filtro-secador (3) y la válvula de solenoide (8) que dirige al refrigerante al uno de los sub-evaporadores (10 u 11) o al evaporador del congelador (6) a través del capilar respectivo (4a, 4b o 4c). Los capilares (4a, 4b, y 4c) pasan a través del cambiador de calor (5). Simultáneamente el ventilador del compartimento de alimento fresco (9) extrae aire caliente del compartimento de aire fresco (18). El aire caliente se hace pasar sobre los sub-evaporadores de alimento (10 y 11), y se enfría, después se devuelve al compartimento de aire fresco (18). Durante la circulación de aire sobre los evaporadores de alimento fresco (10 u 11), se acumula escarcha sobre las superficies del evaporador y esto hace disminuir la eficiencia del aparato de refrigeración.In this alternative embodiment, the refrigerant after the filter-dryer (3) goes to the fresh food evaporator (20) or freezer evaporator (6). The defrosting method of Sub-evaporators (10 and 11) is the same. He refrigerant after leaving the sub-evaporators (10 and 11) goes directly to the suction pipe (14). During a refrigeration cycle, the refrigerant is pressurized by the compressor (1) and is fed to the condenser (2). Through condenser (2), the refrigerant exchanges heat with the air atmosphere and condenses. The refrigerant then passes through the filter-dryer (3) and solenoid valve (8) which directs the refrigerant to one of the sub-evaporators (10 or 11) or to the evaporator of the freezer (6) through the respective capillary (4a, 4b or 4c). The capillaries (4a, 4b, and 4c) pass through the heat exchanger (5). Simultaneously the fan of the fresh food compartment (9) draws hot air from the fresh air compartment (18). He hot air is passed over food sub-evaporators (10 and 11), and it cools, then returns to the fresh air compartment (18). During air circulation over food evaporators fresh (10 or 11), frost accumulates on the surfaces of the evaporator and this decreases the efficiency of the device refrigeration.
El refrigerante después de dejar los sub-evaporadores (10 y 11) o el evaporador del congelador (6) pasa a la tubería de succión (14). La válvula de retención (19) evita el retroceso del flujo a través de evaporador del congelador (6) cuando uno de los sub-evaporadores (10 u 11) está en funcionamiento y el evaporador del congelador (6) está en posición desconectada. El refrigerante completa su ciclo cuando vuelve al compresor (1) de nuevo.The refrigerant after leaving the sub-evaporators (10 and 11) or the evaporator of the Freezer (6) passes to the suction pipe (14). Valve retention (19) prevents backflow of the flow through evaporator of the freezer (6) when one of the sub-evaporators (10 or 11) is in operation and the freezer evaporator (6) is in the disconnected position. He refrigerant completes its cycle when it returns to the compressor (1) of new.
Durante el ciclo de refrigeración, el
refrigerante se dirige a uno de los sub-evaporadores
(10 y 11). La válvula de solenoide (8), para una duración de
descongelación predeterminada tdef1 dirige el refrigerante
únicamente al primer sub-evaporador (10). Durante
la circulación de aire sobre los sub-evaporadores
(10 y 11) se acumula escarcha únicamente sobre la superficie del
primer sub-evaporador (10) en el que el refrigerante
se alimenta a su través. Durante la duración de descongelación
predeterminada tdef1 si el primer ventilador de alimento fresco (9)
está en funcionamiento, se hace circular aire caliente sobre ambos
sub-evaporadores (10 y 11). El aire caliente ayuda
a descongelar el segundo sub-evaporador (11) que
está en posición de reposo, es decir, el refrigerante no se a
alimenta a su través. Mientras, se enfría el aire caliente mediante
el primer sub-evaporador (10). Después de la
duración tdef1, se repiten las mismas etapas para descongelar el
primer sub-evaporador (10). Durante este tiempo,
la válvula de solenoide (8), para la duración tdef2'' dirige el
refrigerante únicamente al segundo sub-evaporador
(11). Durante la circulación de aire sobre los evaporadores de
alimento fresco (10 y 11) la escarcha se acumula únicamente sobre
la superficie del segundo sub-evaporador (11) en el
que el refrigerante se alimenta a su través. Durante la duración de
descongelación tdef2 predeterminada si el ventilador de alimento
fresco (9) está en funcionamiento se hace circular aire caliente
sobre ambos sub-evaporadores (10 y 11). El aire
caliente viaja sobre el primer sub-evaporador (10) y
ayuda a fundir la escarcha. Mientras, el aire caliente se enfría
mediante el segundo sub-evaporador
(11).During the refrigeration cycle, the refrigerant is directed to one of the sub-evaporators (10 and 11). The solenoid valve (8), for a predetermined defrost duration tdef1 directs the refrigerant only to the first sub-evaporator (10). During the circulation of air over the sub-evaporators (10 and 11) frost accumulates only on the surface of the first sub-evaporator (10) in which the refrigerant is fed therethrough. During the predetermined defrost duration tdef1 if the first fresh food fan (9) is in operation, hot air is circulated on both sub-evaporators (10 and 11). The hot air helps defrost the second sub-evaporator (11) that is in the rest position, that is, the refrigerant is not fed through it. Meanwhile, the hot air is cooled by the first sub-evaporator (10). After the duration tdef1, the same steps are repeated to defrost the first sub-evaporator (10). During this time, the solenoid valve (8), for the duration tdef2 '' directs the refrigerant only to the second sub-evaporator (11). During the circulation of air over the fresh food evaporators (10 and 11) the frost accumulates only on the surface of the second sub-evaporator (11) in which the refrigerant is fed therethrough. During the defrost duration tdef2 predetermined if the fresh food fan (9) is in operation, hot air is circulated on both sub-evaporators (10 and 11). The hot air travels over the first sub-evaporator (10) and helps melt the frost. Meanwhile, the hot air is cooled by the second sub-evaporator
(eleven).
El aparato de refrigeración de la presente
invención elimina el uso de calentadores eléctricos para descongelar
evaporadores de alimento fresco, disminuyendo de esta manera el
consumo de energía mientras que se proporciona una
refrigeración
satisfactoria.The refrigeration apparatus of the present invention eliminates the use of electric heaters to defrost evaporators of fresh food, thereby reducing energy consumption while providing cooling.
satisfactory
Claims (4)
(20).2. A refrigeration apparatus that includes a fresh food compartment (18) and a freezer compartment (17) that are kept at different temperatures, a fresh food evaporator (20) and a freezer evaporator (6) to cool the fresh food compartment (18) and freezer compartment (17) respectively, a fresh food fan (9) for circulating air over the fresh food evaporator (20), characterized in that, the fresh food evaporator (20) is composed of a first sub-evaporator (10) and a second sub-evaporator (11) that are connected in parallel and the refrigeration unit is also composed of a solenoid valve (8) to direct the refrigerant to one of the sub- fresh food evaporators (10, 11) during which the fresh food fan (9) operates at least partially so that the fresh food compartment (18) is continuously cooled down and defrosted elar the fresh food evaporator
(twenty).
evaporadores (10 y 11) se aíslan con un separador (12) que está hecho preferiblemente de estiro-espuma y que se cubren con una lámina de aluminio que mantiene la humedad lejos del material de estiro-espuma y evitando problemas higiénicos y que es suficientemente grande para establecer una barrera natural para evitar que el aire frío se mueva al otro lado y cree escarcha.3. A refrigeration apparatus according to claim 1, characterized in that the sub-
Evaporators (10 and 11) are isolated with a separator (12) that is preferably made of stretch foam and that are covered with an aluminum foil that keeps moisture away from the stretch foam material and avoiding hygienic problems and that is sufficiently Great for establishing a natural barrier to prevent cold air from moving to the other side and creating frost.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/TR2000/000058 WO2002037038A1 (en) | 2000-11-03 | 2000-11-03 | A defrosting method and a refrigeration appliance using thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2266001T3 true ES2266001T3 (en) | 2007-03-01 |
Family
ID=21619308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES00978196T Expired - Lifetime ES2266001T3 (en) | 2000-11-03 | 2000-11-03 | A DEFROSTING METHOD AND A COOLING DEVICE THAT USES THE SAME. |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1334321B1 (en) |
| AT (1) | ATE330191T1 (en) |
| AU (1) | AU2001215680A1 (en) |
| DE (1) | DE60028837T2 (en) |
| ES (1) | ES2266001T3 (en) |
| TR (1) | TR200301052T1 (en) |
| WO (1) | WO2002037038A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1586837A1 (en) * | 2004-04-16 | 2005-10-19 | Electrolux Home Products Corporation N.V. | Refrigerator apparatus with freezer compartment and simplified defrosting device |
| DE102004035123B4 (en) * | 2004-07-20 | 2009-07-23 | Wurm Gmbh & Co. Kg | cooling system |
| KR100597748B1 (en) * | 2004-08-27 | 2006-07-07 | 삼성전자주식회사 | Cooling system |
| CN102564005A (en) * | 2011-10-13 | 2012-07-11 | 海尔集团公司 | Direct cooling type refrigerator |
| CN102331136A (en) * | 2011-10-13 | 2012-01-25 | 海尔集团公司 | Direct cooling refrigerator |
| CN102767929B (en) * | 2012-06-05 | 2017-04-05 | 海尔集团公司 | A kind of refrigerator and control method |
| CN102706021A (en) * | 2012-06-18 | 2012-10-03 | 合肥华凌股份有限公司 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
| GB2566671B (en) * | 2017-07-17 | 2021-07-28 | Andrew Simon | Heat pump apparatus |
| CN111936801B (en) | 2018-04-13 | 2022-08-09 | 开利公司 | Method for defrosting a refrigeration system having a plurality of heat absorption heat exchangers |
| CN111879029B (en) * | 2020-07-28 | 2021-05-14 | 西安交通大学 | Heat pump system of micro-channel heat exchanger and optimized restarting heating control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029576A (en) * | 1983-07-25 | 1985-02-14 | 株式会社東芝 | Refrigerator |
| US5187945A (en) * | 1991-05-13 | 1993-02-23 | Reefco Manufacturing Corporation | Refrigerated container |
| US5406805A (en) | 1993-11-12 | 1995-04-18 | University Of Maryland | Tandem refrigeration system |
| GB9500160D0 (en) * | 1995-01-05 | 1995-03-01 | British United Shoe Machinery | Chillers |
-
2000
- 2000-11-03 AT AT00978196T patent/ATE330191T1/en not_active IP Right Cessation
- 2000-11-03 EP EP00978196A patent/EP1334321B1/en not_active Expired - Lifetime
- 2000-11-03 TR TR2003/01052T patent/TR200301052T1/en unknown
- 2000-11-03 WO PCT/TR2000/000058 patent/WO2002037038A1/en active IP Right Grant
- 2000-11-03 DE DE60028837T patent/DE60028837T2/en not_active Expired - Lifetime
- 2000-11-03 AU AU2001215680A patent/AU2001215680A1/en not_active Abandoned
- 2000-11-03 ES ES00978196T patent/ES2266001T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1334321A1 (en) | 2003-08-13 |
| AU2001215680A1 (en) | 2002-05-15 |
| ATE330191T1 (en) | 2006-07-15 |
| DE60028837T2 (en) | 2007-01-18 |
| DE60028837D1 (en) | 2006-07-27 |
| TR200301052T1 (en) | 2007-01-22 |
| WO2002037038A1 (en) | 2002-05-10 |
| EP1334321B1 (en) | 2006-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR930004398B1 (en) | Method of operating low temperature snow case | |
| KR100186665B1 (en) | Show case of low temperature | |
| ES2266001T3 (en) | A DEFROSTING METHOD AND A COOLING DEVICE THAT USES THE SAME. | |
| ES2383608T3 (en) | Cooling device | |
| KR100186666B1 (en) | Defrosting device of low temperature | |
| US5715689A (en) | Evaporator for combination refrigerator/freezer | |
| US20110252816A1 (en) | Refrigerator icemaker moisture removal and defrost assembly | |
| JPH08303932A (en) | Defrosting device for freezer/refrigerator show case | |
| KR100958538B1 (en) | Drain water heating device by utilizing waste heat of defrost processing | |
| CN212362559U (en) | Diversified refrigeration equipment | |
| CN211977342U (en) | Low-temperature box | |
| ES2208710T3 (en) | REFRIGERATOR. | |
| CN112460903A (en) | Refrigeration defrosting system and refrigeration equipment | |
| JP2014048031A (en) | Refrigerator | |
| ES2961108T3 (en) | Method to defrost a freezer cabinet | |
| KR100469322B1 (en) | Evaporator | |
| JP2004183998A (en) | Refrigerator | |
| KR20120047009A (en) | A defroster of refrigeration cycle | |
| JP2004076995A (en) | Refrigerator and its control method | |
| KR100206801B1 (en) | Refrigerator defrost method and its device | |
| KR100627911B1 (en) | Defrosting apparatus for refrigerator | |
| TWI709723B (en) | Refrigeration device and operation method of refrigeration device | |
| JP3430160B2 (en) | refrigerator | |
| JP3567108B2 (en) | refrigerator | |
| CN214223495U (en) | Refrigerator with a door |