Energy-saving refrigerator

Abstract

The invention discloses an energy-saving refrigerator and belongs to the technical field of refrigerator energy conservation. Before polyurethane foam is filled in a heat-insulating layer to foam, one or two high-vacuum thermal insulation plates are arranged in the heat-insulating layer. The whole heat-insulating material consists of polyurethane open-cell foam, an air adsorbent and a trapping membrane, wherein the polyurethane open-cell foam serves as a core heat-insulating material; the aperture ratio of the polyurethane foam is more than or equal to 95 percent; and the polyurethane open-cell foam is vacuumized and is sealed by the trapping membrane, so that the heat conductivity is greatly reduced. A double-magnetic stripe door seal is arranged at a connecting place of the cabinet body and a door body; two parallel magnetic stripes of which the length is 4 to 6mm respectively pass through two correspondingly independent air bags; and a small air bag is spaced between the two air bags. The two magnetic stripes realize two door seals and have complementary effect of two sealing surfaces which overcome leakage caused by warping of a single magnetic stripe and guarantee that the seal is more thorough. The aim of energy conservation and consumption reduction is fulfilled by changing the material and structure of the heat-insulating layer and the mounting positions and number of the magnetic stripes of the door seal.

Description

technical field [0001] The invention relates to a refrigerator, more specifically, an energy-saving refrigerator-freezer. Background technique [0002] Refrigerators have only appeared in a few short decades, but they have undergone several updates. The appearance and volume have developed from single-door small capacity to multi-door large capacity, and the functional use has developed from single freezing to multi-temperature, multi-layer and multi-functional purposes. The control method has developed from mechanical to digital control, but increasing the volume and capacity of the refrigerator means taking up more space and consuming more energy, which is bound to be limited by living conditions and energy shortages. Many other uses of the refrigerator It is just an additional function. Freezing and refrigeration are always the basic functions of refrigerators, and humanization, energy saving and high efficiency are the themes of refrigerator development. [0003] At pre...

AI Technical Summary

Problems solved by technology

[0002] Refrigerators have only appeared in a few short decades, but they have undergone several updates. The appearance and volume have developed from single-door small capacity to multi-door large capacity, and the functional use has developed from single freezing to multi-temperature, multi-layer and multi-functional purposes. The control method has developed from mechanical to digital control, but increasing the volume and capacity of the refrigerator means taking up more space and consuming more energy, which is bound to be limited by living conditions and energy shortages. Many other uses of the refrigerator It is just an additional function. Freezing and refrigerating are always the basic functions of refrigerators, and humanization, energy saving and high efficiency are the themes of refrigerator development

[0003] At present, the energy-saving technology of domestic refrigerators mainly reduces the energy consumption of refrigerators from the following aspects: 1) Increase the thickness of the foam layer of the refrigerator. In order to reduce the radiation of cold to the outside, increase the thickness of the foam layer in the refrigerator to 55mm to 65mm, and increase the thickness of the foam layer in the freezer to 85mm to 100mm or even 120mm, and increasing the thickness of the foam layer will inevitably increase the temperature of the refrigerator. 2) Using a mechanical thermostat, the refrigerator compressor of the single-cycle refrigeration system is only controlled by the temperature of the refrigerator room. Compared with the refrigerator of the cycle refrigeration system, the start-up time is shorter and more power-saving; 3) High-efficiency compression is adopted 4) Using the airbag door seal, whether the refrigerator door is closed tightly will directly affect the working efficiency of the refrigerator, and the air leakage of the refrigerator will lead to poor cooling effect and increase power consumption. It is easy to cause the compressor to start repeatedly and burn out. The use of door seals can reduce the flow of cold energy through the gap in the refrigerator door and increase power consumption.

[0004] The conventional energy-saving technology of the above-mentioned refrigerator has the advantages of simple production process and high reliability, but its disadvantages are also obvious: too thick foaming will affect the appearance of the refrigerator and increase the production cost of the refrigerator; the mechanical thermostat is inconvenient to operate , poor freezing capacity of the single-cycle system; the development cycle of high-efficiency compressors is too long, which will increase the overall cost of the refrigerator; door seals are used, and most refrigerators use a whole magnetic strip to attract the refrigerator shell for sealing. If the box shell is uneven or has impurities, it will cause the entire suction surface to "warp", resulting in gaps at the joints of the door and body, resulting in the overflow of cold air in the refrigerator, poor thermal insulation performance, and increased power consumption

[0005] For this reason, many refrigerator products now use vacuum insulation panels to improve the heat insulation effect. The application method is usually to paste them on the inside of the refrigerator shell or the outside of the inner cavity. It is used for vacuum panels and pasted surfaces, but this method is costly, and in practical applications, due to the uneven outer surface of the refrigerator shell and inner cavity, the vacuum insulation panel is often not in 100% contact with the refrigerator shell and inner cavity. After foaming, there will be separation or cavitation, and the foaming rate is not high, which limits the application and promotion of vacuum insulation panels in refrigerators

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