DE6919317U - PRESSURE COOLING DEVICE FOR STATIONARY OR MOVING HOT-GOING SYSTEM COMPONENTS AND THE LIKE. WITH CURVED OR FLAT SURFACE - Google Patents

Description

.report document,

Pressure cooling device for stationary or moving hot-running Aluminum parts and the like with a curved or flat surface

The invention relates to a further embodiment of a pressure cooling device according to patent application P 16 08 327.5 / 18e for stationary and moving Home system parts and the like, with one or preferably several, Pressure cooling units equipped with coolant outflow openings with high flow resistance, connected via wide inflow openings to a coolant pressure line,

The pressure cooling device cools stationary or moving hot-running system parts and the like. With curved or flat surface, which in the production process or the like. By the product to be manufactured or other circumstances caused in the manufacturing process from high temperature permanently in a short time to a lower one.

For example, it reached the surface of rollers that run on glowing or hot-plate material or the molds that run on hot-liquid material are charged, high temperatures, which have a negative effect on the service life. The service life increases when the cooling system is more efficient.

There are cooling devices «? !! known, in which the coolant with pressures of 0.5 to 20 atmospheres and more via a multitude of possible nozzle shapes cooling surfaces is sprayed on or these surfaces are standing or immersed in a coolant.

All known systems have the disadvantage that the to be cooled The water film that forms on the surface with the layer of vapor bubbles underneath, as is well known, has a negative effect on the desired high cooling rate.

Even the use of a large number of hard jet nozzles will bring "egg" the increasing roughness of the surface during operation does not have the desired effect.

The object is achieved according to the invention in that a cooling device for stationary or moving home system parts and the like. With curved or flat surface with one or preferably several, Via wide inlet openings connected to a coolant pressure line, pressure cooling units equipped with coolant flow openings with high flow resistance against the β is created.

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Execution examples are shown schematically in the drawings and described below.

Show it

Fig. 1 cross section through curved pressure cooling units

la for smooth rollers or belt deflections

Ib for rolls with large calibration

Ic b, ei rollers with small calibration

Fig. 2 longitudinal section through curved pressure cooling units on one Pair of rollers

a) with a flow space of constant cross-section,

b) with a conical flow space

3 shows a longitudinal section through planar pressure cooling units (shown on one side)

a) a band, with a flow space constant cross-section

b) a mold with a conical flow space.

Pressure cooling units (Z) are placed on the rollers (1, la, Ib, Ic), the band 1 d or the mold Ie, which are used on the hot material (O), which are driven by rollers (3) or sliders ( 3a) are guided in the late height (4) of the surface to be cooled (5). The Eruck coolant flows from the coolant pressure pipe (6) via the valve (7), the distributor pipe (8) and the inflow opening (9) into the flow space (10), which is designed with a variable cross section (15) , with the height (11) and the elevation (12) at the inflow openings (9) and leaves this through the A ig flow opening (13) with the rows (14),

The design of the outflow opening (13) is the desired objective pi reasons for giving this such a large flow resistance, that there practically the entire pressure drop occurs, the cooling, "medium-pressure line is adjusted so at this point the end (6).

In the flow space (10) itself there is only an insignificantly lower pressure than in the cooling medium pressure line (6), which should be at least 0.5 atmospheres, but preferably above 4 atmospheres.

The highest possible pressure with the highest possible flow velocity result in a high level of turbulence: in the flow space (10) » which together have a beneficial effect on the cooling in several ways.

6919317 ob.12.77

There are compressed on said hot surface to be cooled forming ¹ Steam "bubble, whereby the unwanted heat insulating effect

j is reduced, its replacement speed is further increased

and thus accelerates their recondensation.

The outflow openings (13) should be as small as possible and are combined dimensioned with the coolant flow space (10), and bind in their gap height (4) not greater than 10 mm, but preferably less than 3 mm. The flow space (10) between the wide inflow openings (9) udu the narrow outflow openings (13) is small in its height (11), not greater than 20 mm, but preferably less than 10 mm.

In the immediate area of the inflow openings (9) is the flow space (10) preferably 30% (12) higher than the height (11) in order to

to achieve the division of the coolant.

j In the preferred design, the flow space (10) becomes conical to the

'Flow openings (13) carried out, the flow space height (12) in the

Center no larger than 25 mm, but preferably smaller LLs 10 mm and on the outflow side (13) not larger than 10 mm, but preferably smaller

j is measured as 3 mm,

The inflow openings (9) are over the width of the cooling unit as wide openings

j evenly distributed over the pressure cooling unit and in one or more

. Arranged in rows.

! The line (14) at the outflow openings (13) is made of heat-resistant, stainless steel

! · The material and the surface of the surface to be cooled are adapted so that a

■ The smallest possible gap height _V 4) can be driven.

The cooling units (2) are installed with spacer rollers (3) or sliders (4) in a fixed position or adjustable following the surface to be cooled.

The advantage of the pressure cooling device is that

a) thanks to the bridge coolant flowing in the narrow flow space with high turbulence, the small vapor bubbles in the hot surface are also quickly detached and a high heat transfer value oC is achieved, which ensures a good cooling effect, whereby

j aa) the dimensions of the cooling device are small

■ ab) the Ακίage parts, which are cooled quickly and intensively, for a longer period of time

Achieve service life,

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which saves investment and operating costs,

b) due to the good cooling effect with the same cooling, a lower pressure Kuhlmifctelmerga is consumed, whereby energy is saved,

^! c) the coolant exits at a high temperature and over corresponding

ι 'heat exchanger is made further nutsbar, reducing the cost of the

; Kfthluing will be lowered »

Claims (8)

t t »» l t t I · «β <· M ft JtIIlI · t,. itttl «·« «« ·! ittttttniiii -4 - Proverbs 1. Pressure cooling device according to patent application P 16 08 327. 5 / l8c for stationary or calibrated moving home system parts and the like, with Curved or flat surface with one or preferably several pressure cooling units, which are connected to a coolant pressure line via wide inlet openings and are equipped with high flow resistance and external flow openings, characterized in that the gap height (4) the outflow opening (13) is as small as possible, at most about 10 mm. 2 «printing K ^ Meineinrichtung according to claim 1, characterized in that the Gap height «(4) of the outflow opening (13) is less than 3 mm. 3 »Pressure cooling device according to claims 1 and 2, characterized in that the height (U) of the flow space (10) is low, at most 20 mm. 4. Pressure cooling device according to claims 1 to 3, characterized in that «the height (11) of the flow space (10) is less than 6 mm. 5. Pressure cooling device according to claims 1 to 4, characterized in that the height (11) of the flow space (10) in the area of the inflow openings (9) over the entire width of the cooling unit compared to the gap height (11) by about 30% ( 12) is increased. 6 «pressure cooling device according to claims 1 and 2, characterized in that the flow space MO) is conical from the center to the outflow openings (13), the gap height (12) at the inflow openings (9) according to claims 5 and in front of dr, n outflow openings (13) according to claims 1 and 2 are formed. 7 · Pressure cooling device according to claims 1 to 6, characterized in that the wide inflow openings (9) into the flow space (10) with of the elevation (12) are distributed over the width of the pressure cooling unit in such a way that that the flow velocities in the flow space (10) in the longitudinal direction of the pressure cooling unit (2) are as uniform as possible over the entire width. 8. Pressure cooling device according to claims 1 to 7, characterized in that the bar (14) at the outflow openings (13) of the surface of the surface to be cooled is adapted so that the smallest possible gap height (4) can be driven. 9 · Pressure cooling device according to claims 1 to 8, characterized in that the pressure K <· subtleties (2) via rollers (3) or sliding pieces «(3a) the height of the spine (4) can be installed in a variable manner. 6919317 December 8th, 77 I It '* t · · '. I. al · e · ι IH M ti III I * ι · III 5 - 10 «Pressure cooling device according to claims 1 to 9», characterized in that the pressure cooling devices (2) are designed for curved or flat surfaces to be cooled. 11 · Pressure cooling device according to claims 1 to 10, characterized in that the cooling units are arranged opposite one another . 6919317 December 8th, 77