CN2192871Y

CN2192871Y - Internal fin copper tube of efficient freezing water apparatus

Info

Publication number: CN2192871Y
Application number: CN 94200143
Authority: CN
Inventors: 陈国连
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-11
Filing date: 1994-01-11
Publication date: 1995-03-22
Anticipated expiration: 2004-01-11

Abstract

The utility model relates to a heat-exchange internal fin copper tube of efficient freezing water apparatus of cooling medium, which is used on a refrigerator and characterized in a helical copper tube internal fin, and a helical-shaped cooling medium flow passage which is formed by helical fin pieces generates turbulent stream even more easily than a straight and flat flow passage to make the contact opportunity between cooling medium molecules and the flow passage wall more average, namely to make the temperature distribution of the cooling medium fluid on the same section more uniform, so the heat exchange effectiveness is superior to the general stellar and linear type fin pipe flow passage.

Description

Internal fin copper tube of efficient freezing water apparatus

The utility model relates to fin copper pipe in a kind of air-conditioner.

The refrigerant copper pipe of the refrigeration freezing water apparatus of present medium-and-large-sized centralized air-conditioning device main (WATER CHILLER) is for for the purpose of increasing cold and hot exchange efficiency, in copper pipe, pack into a kind of interior fin of starlike aluminum strip, contact with heat absorption to increase refrigerant stream, the structure of this copper pipe and interior fin as shown in Figure 1.Fin 2 in being equipped with in the copper pipe 1, the section of fin 2 is star-shaped in being somebody's turn to do, constitute straight refrigerant channel 22 with fin 21, the heat of copper pipe 1 outer wall can directly reach the refrigerant fluid via copper pipe wall 11 and be absorbed by refrigerant, also can be via 11 interior fins 2 of copper pipe wall to aluminum, and borrow contacting of fin 21 surfaces and mobile refrigerant, heat is reached refrigerant and reaches preferable refrigeration.The section temperature of therefore mobile refrigerant distributes the utmost point is similar to the layered distribution shown in Fig. 2 (shown in dotted line), straight formula runner 22 is difficult for making fluid to produce flow-disturbing, its shortcoming is: the refrigerant of runner core contact with wall and the chance that absorbs heat far beyond around refrigerant be little, so the refrigerant temperature of peripheral part is higher than the refrigerant temperature than core, thereby the refrigerant endothermic effect is undesirable.

The purpose of this utility model is to provide at the above-mentioned straight not high shortcoming of formula runner heat absorption efficiency fin copper pipe in the heat exchange refrigerant of an efficient freezing water apparatus.

The purpose of this utility model can reach by following measure: fin has 5-10 leaf zigzag fin in the spiral aluminum strip, fin and copper pipe inwall are combined closely, constitute screw type runner, and also to have a wall be zigzag tubulose runner at the fin center in the spiral aluminum strip.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a fin copper pipe finished figure in the general starlike straight formula;

Fig. 2 is a fin copper pipe sectional drawing in the general starlike straight formula;

Fig. 3 is the interior fin copper pipe finished figure of the heat exchange refrigerant of the utility model high efficiency freezing water apparatus;

Fig. 4 is the interior fin copper pipe finished product sectional drawing of the heat exchange refrigerant of the utility model high efficiency freezing water apparatus;

Fig. 5 changes key diagram for the cold and hot conversion of refrigeration freezing water apparatus;

Fig. 6 is the detailed structure combination key diagram of fin copper pipe practical application in the refrigeration freezing water apparatus in the new creation.

The utility model is described further below in conjunction with drawings and Examples.

See also Fig. 3, fin copper pipe structure is made up of fin 4 in copper pipe 3 and the spiral aluminum strip in the heat exchange refrigerant of the present utility model, wherein the principal character of fin 4 is to constitute spiral helicine runner 42 with fin in the spiral helicine 5-10 leaf zigzag aluminium matter type bar 41 in the aluminum strip, its center has in the whole double helix aluminum strips of runner 43 of a tubulose fin 4 and packs into after the copper pipe 3, handle and combination through pressure pipe, wherein fin 41 and copper pipe 3 fluid-tight engagement are shown in Fig. 4 finished product.Its application examples such as Fig. 5, shown in Figure 6.By can see among two figure when water after freezing water apparatus high temperature water inlet 51 enters, to make a circulation within freezing water apparatus because of the effect of dividing plate 52, and fully heat is imported into copper pipe 3 inside, and take away and fully absorbed by refrigerant, making outlet 53 water that flowed out is the frozen water of cryogenic freezing.

In sum, refrigerant copper pipe of the present utility model constitutes spiral helicine runner with spiral helicine fin, and for zigzag can to increase more large contact surface long-pending, and because the pipe properties of flow of fluid, make the stronger flow-disturbing of the easier generation of interior fin of the more present straight formula runner of the interior refrigerant fluid of this kind helical flow path make the touch opportunity of each refrigerant molecule and runner wall average, the Temperature Distribution of its section is more even, therefore the runner of the more present straight formula of temperature of refrigerant and runner wall contact position is low, be the bigger of the refrigerant and the copper pipe external world in abutting connection with the temperature difference, its heat conducting trend is stronger, and endotherm area is bigger.So the efficient of heat exchange is higher, makes the frozen water of freezing water apparatus colder.

Claims

1, a kind of interior fin copper pipe of high efficiency freezing water apparatus, formed by fin in copper pipe and the spiral aluminum strip, it is characterized in that: fin has spiral helicine 5-10 leaf zigzag fin in the described spiral aluminum strip, and above-mentioned fin and copper pipe inwall are combined closely, and constitute screw type runner.

2, the interior fin copper pipe of high efficiency freezing water apparatus according to claim 1 is characterized in that: the center of fin has a tubulose runner in the described spiral aluminum strip, and this tubulose flow path wall also is a zigzag.