CN2171091Y

CN2171091Y - Frost remover for evaporator

Info

Publication number: CN2171091Y
Application number: CN 92242928
Authority: CN
Inventors: 薛允荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-09
Filing date: 1992-12-09
Publication date: 1994-07-06
Anticipated expiration: 2002-12-09

Abstract

The utility model relates to a frost remover for evaporator which is provided with more than two evaporating pipes, an electric heater and more than two fins for the evaporating pipes and the electric heater to thread. The frost remover for evaporator is characterized in that a heat conductor is also arranged between the fin and the electric heater. The heat conductor is used to enlarge the heat conducting contact area of the electric heater and the fin. The frost remover for evaporator has better defrosting effect.

Description

Frost remover for evaporator

The utility model relates to a kind of evaporimeter, and it is big and then have a defroster of the evaporimeter of preferable defrosting effect particularly to relate to a kind of heat transfer area.

Used so that confined space has the evaporimeter of cool house effect after long-time the use in the past, its surface easily has the frosting situation to take place, as the evaporimeter in the refrigerator promptly is a tangible example, if the frosting of evaporator surface is not removed under long-time accumulation, can influence the cool house effect of evaporimeter, this is especially obvious in the big freezing place of refrigerating capacity, so, under the normal condition, the evaporimeter work that promptly can once defrost at set intervals; The Defrost mode of evaporimeter was nothing more than there being following two kinds in the past, wherein a kind of is hot gas defrosting, another kind then is the electric heater defrosting, two kinds of Defrost modes all are to produce heat and transmit to give evaporimeter basically, so that the frosting of evaporator surface is melted rapidly, thereby can reach the purpose of defrosting, wherein the widest with electric heater defrosting range of application again.

Be existing evaporator defrost schematic representation of apparatus as shown in Figure 1, evaporimeter 1 is to defrost with the electric heater defrosting mode among the figure, evaporimeter 1 is made of many evaporation tubes 11, also be installed with a plurality of fins 12 on the evaporation tube 11, fin 12 is in order to increase the disengagement area of evaporation tube, and then can play the effect of heat exchange comparatively apace, then be equipped with electric heater 13 in evaporimeter 1 both sides, shown in Figure 2 is the partial structure figure of existing evaporator defrost device, both sides appropriate location at evaporimeter 1 each fin 12 offers groove 121,13 of electric heaters are arranged in the groove 121 of fin 12, electric heater 13 can clearly be seen in both sides at evaporimeter 1, and the heat that is given out by electric heater 13 can reach the purpose that makes evaporimeter 1 defrosting gradually.

Though the heat that is produced by electric heater 13 of existing evaporimeter 1 can reach the purpose of defrosting, but its defrosting effect is not good within a certain period of time, defrosting time more of a specified duration must be expended and just predetermined defrosting effect can be reached, because evaporimeter 1 carries out in the process in the defrosting operation, the cold-room effect of whole confined space is the state that is pause, so defrosting time more for a long time, causes the temperature in the cold-room to go up more easily, and then article stored in the cold-room are damaged; The existing not good reason of electric heater defrosting efficiency is that electric heater 13 is arranged on the both sides of evaporimeter 1, the heat energy that makes electric heater 13 be produced is transmitted toward inboard by the outside of evaporimeter 1, so not only heat energy easily is dissipated in evaporimeter 1 outside, and by outer past interior bang path, the speed of its thermal energy transfer is slower, thereby makes that existing electric heater defrosting effect is relatively poor; Again as shown in Figure 1, 2, electric heater 13 was very limited with the contact area of evaporimeter 1 in the past, promptly only fin 12 contacts with the annular cross section of electric heater 13, so the heat energy that electric heater 13 is produced can't be done the heating of full blast to evaporimeter 1 in the mode of transmission of heat by contact, thereby makes that existing electric heater defrosting effect is not good.

Main purpose of the present utility model is to provide a kind of defroster of evaporimeter, makes it have bigger heat transfer area, and then can produce preferable defrosting effect.

The utility model provides a kind of defroster of evaporimeter, and this device comprises evaporation tube, electric heater and the fin that evaporation tube and electric heater can be set thereon, wherein also is provided with heat conductor between fin and the electric heater.

Design of the present utility model has following characteristics with use than known technology:

(1) has bigger heat conduction contact area: as can be known by above explanation, the utility model is provided with heat conductor between fin and electric heater, can enlarge the heat conduction contact area between electric heater and fin, and then the heat that electric heater is produced can transmit effectively and gives fin, so that fin and the evaporation tube that is arranged in the fin have the preferable thermal effect that is subjected to, and then can produce better defrosting effect, relatively can reduce evaporimeter and defrost time of operation, and reduce because of cool house effect stop to cause be frozen that thing is flimsy may.

(2) can reduce the loss of heat: as can be known by aforesaid explanation, the utility model is located on the fin from zone far away, fin edge electric heater by the design to heat conductor, thereby make heat that electric heater produced in fin, to conduct by interior conducting path outward, compared to the prior art more as can be known, the utility model can make the less dissipation of heat in the evaporimeter outside, simultaneously evaporimeter is heated fully, so have the loss that reduces heat and improve the evaporimeter heating degree and produce the advantage of preferable defrosting effect.

In sum, the defroster of the utility model evaporimeter design can improve the fin and the conduction of the heat between the electric heater contact area of evaporimeter, reduces the loss of heat simultaneously, thereby compares than prior art and to have preferable defrosting effect.

Be elaborated below by most preferred embodiment and accompanying drawing defroster to evaporimeter of the present utility model, in the accompanying drawing:

Fig. 1 is existing evaporator defrost schematic representation of apparatus.

Fig. 2 is the partial structure figure of existing evaporator defrost device.

Fig. 3 is the schematic diagram of the utility model embodiment.

Fig. 4 is the cutaway view of the utility model embodiment.

Fig. 5 is the stereogram of the utility model embodiment heat conductor.

At first please consult Fig. 3 and Fig. 4 simultaneously.

The evaporimeter 2 of present embodiment has two above evaporation tubes 21, electric heater 22 and can be set in wherein fin 23 for evaporation tube 21 and electric heater 22 more than two, between fin 23 and electric heater 22, also be provided with heat conductor 24, heat conductor 24 is arranged on the fin 23, and its position can be near vertical plane of symmetry of fin; Consult Fig. 5, heat conductor 24 is aluminiums of monolithic extruded moulding, and it has arc groove 241 and extends from the plural fin 242 of arc groove 241 1 sides, and the length of fin 242 can be decided according to the quantity of fin 23.

When being provided with heat conductor 24 between fin 23 and the electric heater 22, can effectively enlarge the heat conduction contact area between electric heater 22 and the fin 23, as shown in Figure 4, the heat that electric heater 22 is produced is except that some fins 23 that directly transmission is contacted above giving, remaining heat will be passed to and electric heater 22 contacted heat conductors 24, then transmit via heat conductor 24 again and give fin 23, because heat conductor 24 has arc groove 241 and plural fin 242, thereby be formed with bigger heating surface, so when electric heater 22 is passed to heat on it, heat conductor 24 can be bigger contact area fin 23 is given in the heat transmission, being provided with of heat conductor 24 enlarged the heat conduction contact area of 23 of electric heater 22 and fins, and then make heat that electric heater 22 produced can be comparatively quick and efficient transmission give fin 23, make fin 23 and be arranged in wherein evaporation tube 21 reaches defrosting because of being heated purpose.

Can make electric heater 22 be positioned at zone by the setting of heat conductor as can be known 24 shown in Figure 4 away from fin 23 edges, thereby, the heat that electric heater 22 is produced not only can transmit effectively with bigger contact area via heat conductor 24 and give fin, simultaneously, the heat of electric heater 22 conducts toward outside zone via the interior zone of fin 23, conducting path can reduce heat and dissipate to evaporimeter 2 loss outward, and then the efficiency of heating surface of relative increase electric heater 22, to produce preferable defrosting effect.

Claims

1, a kind of defroster of evaporimeter comprises evaporation tube, electric heater and the fin that evaporation tube and electric heater can be set thereon, it is characterized in that: also be provided with heat conductor between fin and the electric heater.

2, by the defroster of the described evaporimeter of claim 1, it is characterized in that: heat conductor is arranged on the fin zone away from the fin edge.

3, by the defroster of the described evaporimeter of claim 1, it is characterized in that: heat conductor has circular arc and is extended with fin in a side of arc groove.

4, by the defroster of the described evaporimeter of claim 1, it is characterized in that: heat conductor is the aluminium of monolithic extruded moulding.