CN201149402Y - Fin evaporator of refrigerator - Google Patents

Abstract

The utility model discloses a finned aluminium evaporator of an air cooled refrigerator, which comprises fins, a ledger plate and an evaporating pipe, wherein, the evaporating pipe comprises a dentate evaporating aluminium pipe with internal threads, an inlet pipe with a Cu-Al joint and an outlet pipe with a Cu-Al joint. The dentate evaporating aluminium pipe with the internal threads increases the contact area with the pipe wall when a refrigerant flows, and adopts the means of augmenting heat transfer to enlarge the temperature difference between the temperature of air in the refrigerator and the temperature of the refrigerant in the pipes, thereby achieving the purposes of high efficiency and energy saving. The finned aluminium evaporator of the utility model has the advantages of high heat transfer efficiency, small volume, low production cost and low energy consumption.

Description

The refrigerator evaporator fin

Technical field

The utility model relates to a kind of wind cooling refrigerator evaporimeter, specifically a kind of low cost, energy-efficient evaporator fin.

Background technology

What existing wind cooling refrigerator mostly adopted is evaporator fin, in recent years, because the upstream materials rise in price causes skyrocketing of copper valency, makes the copper evaporimeter into the aluminum evaporation device under the pressure of cost pressure.Along with the aggravation that world energy sources uses, various countries more and more pay attention to the energy consumption problem of refrigerator.Air-cooled refrigerator is originally just than general direct cooling refrigerator power consumption height, the trend toward miniaturization of the energy-efficient and evaporimeter of wind cooling refrigerator has promoted continually strengthening of evaporimeter heat transfer property, adopts traditional aluminium evaporator fin more and more to be difficult to satisfy the energy consumption class requirement of wind cooling refrigerator.

Evaporator of refrigerator is one of critical piece that influences in the cooling cycle system of refrigerator energy consumption of refrigerator, and in running, the liquid refrigerant of low temperature flows at evaporation tube, absorbs the heat around the evaporation tube and transfers steam state attitude cold-producing medium to.Under the constant situation of evaporation structure, the evaporation tube inner refrigerant is big more with the contact area of pipe arm, and the heat that evaporation tube absorbs is just many more, and refrigerating capacity is big more.In addition, the welding requirements of refrigerator refrigeration system is very high, does not allow to occur any leakage.On production line, the solder yield that reaches between copper, the aluminum pipe between evaporimeter and the refrigeration system aluminum pipe is lower, and weldability good between the copper pipe has then been filled up this defective, has improved refrigerator production efficiency and product percent of pass.

Summary of the invention

The purpose of this utility model is at the problems referred to above, and a kind of improved aluminium evaporator fin is provided, and this evaporimeter has better heat exchange efficiency, good welding performance, and reduce product cost.

For achieving the above object, evaporator fin of the present utility model comprises that the cooling fins and the coiling of dentation internal thread evaporation tube that are arranged on the evaporation tube form, and the refrigerant inlet end of aluminum evaporation device and refrigerant outlet end all adopt copper aluminium mouthpiece.

Adopt this structure, cold-producing medium is compared with common evaporimeter increasing with evaporation tube interior threaded surface contact area when the evaporimeter, is obtaining under the prerequisite of identical refrigerating capacity also corresponding the reducing of volume of evaporation tube length minimizing evaporimeter.That is to say that under the evaporator fin condition of same volume, the corresponding raising of refrigeration of the present utility model reduces energy consumption of refrigerator.

In addition, as the further improvement of the utility model evaporator fin, the refrigerant inlet end of evaporimeter and refrigerant outlet end adopt copper, aluminium joint tube connector, have avoided the increase of production equipment special; The welding performance that copper pipe is good has reduced refrigerator and has leaked because of the cold-producing medium that the welding procedure reason produces.The utlity model has advantages such as heat exchange efficiency height, the raw material consumption is few, production cost is low.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a front schematic view of the present utility model;

Fig. 3 is a dentation internal thread cross section partial enlarged drawing.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model improves the structure of the in line aluminium evaporator fin of tradition, comprises evaporimeter copper aluminium inlet connecting branch 4, copper aluminium outlet connecting pipe 3, dentation internal thread evaporation tube 1.Its architectural feature is the aluminum pipe end of copper aluminium inlet connecting branch 4 and is bent into the evaporation tube welding that seven rows are parallel to each other, and the welding of the aluminum pipe end of the evaporation tube other end and copper aluminium outlet connecting pipe 3, some fins 5 that the edge cover is arranged by corresponding interval on every row's evaporation tube, the left and right fixed head of the certain intensity of its outside edge cover fixes.

The utility model and fan and air channel are used, and force hot-air is sucked by fan, and hot-air blows out through becoming cold air behind the evaporimeter of low temperature.Its operation principle is: cold-producing medium enters dentation internal thread evaporation tube from entrance point, fully contacts with the evaporation tube internal tooth wall, becomes vaporized refrigerant output after this carries out heat exchange.As shown in Figure 3, because dentation internal thread evaporation tube inner tubal wall area increases, then effectively improved heat exchange property and reached the purpose of refrigerator energy-saving consumption reduction with this.

In addition, refrigerator is formed its aluminum pipe other end and the welding of dentation internal thread evaporation tube respectively with the copper aluminium import and export tube connector of evaporator fin by a joint copper pipe and a joint Al pipe butt welding.The good welding performance of import and export end copper sleeve of evaporimeter has improved its welding efficiency and welding quality on production line, has reduced cost.

Claims (3)

1. a wind cooling refrigerator evaporator fin is made up of evaporation tube (1), right fixed head (2), outlet connecting pipe (3), inlet connecting branch (4), fin (5), left fixed head (6) six parts.It is characterized in that the evaporation tube of described evaporator fin (1) is formed by the aluminum pipe coiling of dentation internal thread.

2. wind cooling refrigerator evaporator fin according to claim 1 is characterized in that, the refrigerant inlet tube connector (4) of described evaporimeter, refrigerant outlet tube connector (3) adopt copper pipe and Al pipe butt welding to be integral.

3. according to claim 1 and 2 described wind cooling refrigerator evaporator fins, it is characterized in that, refrigerant inlet pipe (4) is connected an end of the evaporation tube (1) of dentation internal thread, and refrigerant outlet pipe (3) is connected the other end of the evaporation tube (1) of dentation internal thread.

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