WO2010133069A1

WO2010133069A1 - Energy-saving refrigerator

Info

Publication number: WO2010133069A1
Application number: PCT/CN2009/075208
Authority: WO
Inventors: 蔡拾贰; 吴世庆
Original assignee: 广东奥马电器股份有限公司
Priority date: 2009-05-19
Filing date: 2009-11-30
Publication date: 2010-11-25
Also published as: CN101566415A; EP2434238A4; EP2434238A1; CN101566415B

Abstract

An energy-saving refrigerator includes an inner shell (1) and multiple layers of inner chamber evaporators (2) which are arranged inside a chamber of the inner shell (1), and outer chamber evaporators (3) are arranged on the surfaces of four sides outside the inner shell (1). In one embodiment, the outer chamber evaporators (3) include evaporation pipes (31) and heat transmission plates (32), and the heat transmission plates (32) are arranged between the evaporation pipes (31) and the inner shell (1). In another embodiment, the outer chamber evaporators (3) include evaporation pipes (31) and aluminium foils (33), and the aluminium foils (33) cover on the surfaces of the evaporation pipes (31) and the inner shell (1).

Description

Instruction manual

Title of Invention: An energy-efficient refrigerator

[I] Technical field

[2] The present invention relates to a refrigeration device, and more particularly to an energy-saving refrigerator.

[3] Background Art

[4] At present, many resources are scarce, and so is electric energy. Therefore, energy saving in refrigerators has become a development trend in the refrigerator industry. Energy saving than refrigerators can be designed from two aspects. First, the temperature of the evaporator is increased by increasing the temperature of the evaporator and increasing the evaporation area. It is more effective to increase the compressor COP value or to optimize the evaporator in the freezer compartment. If the evaporator is encrypted, heat-dissipating fins are added to the evaporation tube. Second, reduce the speed of the refrigerator to stop the load, such as thickening the insulation layer of the box, using vacuum insulation technology. Therefore, in order to make the refrigerator have a good energy-saving effect, it is necessary to improve the insulation layer, the evaporator or the compressor in the freezing chamber, which not only causes waste of material resources, but also has complicated process operation, high production cost and high price. Meet the requirements of energy saving for all.

[5] Summary of the invention

[6] In order to overcome the deficiencies of the prior art, the present invention provides a refrigerator which is low in cost, energy-saving, and simple in process operation.

[7] The technical solution adopted by the present invention to solve the technical problem thereof is:

[8] An energy-saving refrigerator comprising an inner casing and a plurality of inner-cavity evaporators disposed in the inner casing chamber, wherein an outer cavity evaporator is disposed on a peripheral surface of the outer casing.

[9] As a further improvement of the present invention, the outer chamber evaporator includes an evaporation tube and a heat transfer plate, and the heat transfer plate is interposed between the evaporation tube and the inner casing.

[10] As another modification of the present invention, the outer cavity evaporator includes an evaporation tube and an aluminum foil, and the aluminum foil is coated on the surfaces of the evaporation tube and the inner casing.

[II] The beneficial effects of the present invention are: Since the outer cavity evaporator is installed on the outer surface of the outer casing of the present invention, after the refrigerator is collapsed, the inner cavity evaporator in the inner casing chamber and the outer cavity evaporator outside the inner casing are formed. The three-dimensional cold air curtain greatly increases the evaporation area, so that the cold air is alternately transmitted, and the cooling is more rapid and strong; The function of the cavity evaporator, when the refrigerator is stopped, can avoid the high temperature of the external environment affecting the load temperature rise in the box, which is more conducive to preventing the high temperature brought by the radiator arranged on the left and right side plates of the refrigerator, and when the refrigerator is turned on again, the cooling is performed. The agent quickly takes away the external heat absorbed by the external cavity evaporator, so the reasonable design of the opening and closing time ratio can achieve the desired thermal insulation effect; the design also meets the requirements of cooling and heat preservation, the refrigerator is more energy-saving, and the indoor temperature is uniform. Conducive to food preservation, the design of this design is simple, the process operation is very simple, and the cost is low.

[12] BRIEF DESCRIPTION OF THE DRAWINGS

[13] The invention will now be further described with reference to the drawings and embodiments.

Figure 1 is a perspective view of a first embodiment of the present invention;

Figure 2 is a perspective view of a second embodiment of the present invention;

Figure 3 is a schematic diagram of the operation of the present invention.

[17] Specific implementation

[18] Referring to FIG. 1, FIG. 2, FIG. 3, an energy-saving refrigerator includes an inner casing 1 and a plurality of inner-cavity evaporators 2 disposed in the inner casing 1 chamber, and the outer surface of the inner casing 1 is provided There is an external cavity evaporator 3. The same is composed of a compressor 5, a condenser 6, a filter 7, a capillary 8, an internal evaporator 2, an external chamber evaporator 3, and a refrigerating chamber evaporator 4, which constitute a single-cycle refrigeration system. When the refrigerator is cooled, the refrigerant coming out of the capillary 8 first passes through the inner cavity evaporator 2, since the inner cavity evaporator 2 is directly in contact with the load, the cooling speed is fast, and then the refrigerant passes through the outer cavity evaporator 3, the inner casing The inner cavity evaporator 2 in the inner chamber and the outer cavity evaporator 3 on the outer side of the inner casing are equivalent to forming a three-dimensional cold air curtain, which greatly increases the evaporation area, so that the cold air is alternately transmitted, and the cooling is more rapid and strong, and the inner casing is in a chamber. The temperature is also more uniform, which is conducive to food preservation; when the refrigerator is stopped, the temperature of the heat transfer plate 32 is below -30 °C, and the load temperature of the inner casing 1 chamber is maintained at -18 ° C, which is equivalent to the temperature of the heat transfer plate 32 is at least The food temperature is 12 °C lower, which can avoid the high temperature of the external environment and affect the load temperature rise inside the box. It is more conducive to preventing the high temperature brought by the radiator arranged on the left and right side panels of the refrigerator. When the refrigerator is turned on and off next time, the refrigerant The external heat absorbed by the heat transfer plate 32 in the external cavity evaporator 3 is quickly taken away, so that the proportion of the shutdown time is reasonably designed, and the evaporation of the surrounding surface of the freezer compartment is about to be stopped. The temperature of the heat transfer plate rises back to -18 °C as the length of the shutdown time to achieve the desired insulation effect; the design of this design is simple, the process operation is very simple, and the cost is low, which can meet the energy saving of the whole people. Requirements.

[19] The external cavity evaporator 3 includes an evaporation tube 31 and a heat transfer plate 32, and the heat transfer plate 32 is placed in the evaporation tube 31 and the inner casing 1 Between the heat transfer plate 32, the heat transfer plate 32 can be in sufficient contact with the casing 1 to facilitate refrigeration; in addition, the outer cavity evaporator 3 can also adopt other methods, that is, the outer cavity evaporator 3 includes the evaporation tube 31 and the aluminum foil 33, and the evaporation tube 31 is wound. On the casing 1, the aluminum foil 33 covers the evaporation tube 31 and the surface of the casing 1, and can be effectively cooled.

Of course, the present invention is not limited to the above-described embodiments, and it should be within the scope of the present invention as long as it achieves the technical effects of the present invention by substantially the same means.

Claims

Claim

[Claim 1] An energy-saving refrigerator comprising an inner casing (1) and a plurality of inner-cavity evaporators (2) disposed in the inner casing (1) chamber, characterized in that: the outer casing (1) is external An external cavity evaporator (3) is provided on the surrounding surface.

[Claim 2] An energy-saving refrigerator according to claim 1, characterized in that: the external cavity evaporator (3) comprises an evaporation tube (31) and a heat transfer plate (32), the heat transfer plate ( 32) Place between the evaporation tube (31) and the inner casing (1).

[Claim 3] An energy-saving refrigerator according to claim 1, characterized in that: the external cavity evaporator (3) comprises an evaporation tube (31) and an aluminum foil (33), the aluminum foil (33) being covered The evaporation tube (31) is on the surface of the inner casing (1).