SU1236304A1 - Adjustable heat tube - Google Patents

Description

12.36304

2. The pipe according to item 1, which differs by not exceeding the magnitude of the fact that the disks are installed in relation to one another from the zones of hype6oJ: oid as it moves.

The invention relates to heat engineering and can be used in heat exchangers to regulate the flow area.

The purpose of the invention is to simplify the design and increase reliability.

Figure 1 presents the proposed heat pipe, General view; in Fig.2 a section aa in fig 1; on fig.Z - the same, when prirezi on disks do not match; figure 4 - section bb in figure 1, hyperboloid, cross section.

The adjustable heat pipe includes a housing 1 with a steam channel 2 and a capillary structure 3. In channel 2, a valve is installed that is filled in the form of two disks 4 and 5 with slots 6, one of the disks 4 being mounted for movement and through a transfer device in The form of a spring 7 is connected to a drive, made in the form of a corrugated single-cavity hyperboloid 8 with hOLR 9 located along its straight lines forming. Moreover, the hyperboloid 8 is filled with a liquid with a large coefficient of volume expansion, and the disks 4 and 5 are set relative to each other with a gap of 10 that does not exceed the magnitude of the elongation of the hyperboloid as it moves, and this amount is 0, -0.8 of this extension. The spring 7 may be made of plate, wire, cylindrical or conical.

rum not exceeding the value of

Nejep6oJ: oida when it moves.

ten

five

five

0

five

The device works as follows.

When a heat pipe is operated with a given temperature of the source of heat supply, the drive is hyperboloid 8 does not work. In this case, the slots 6 of the fixed and rotary disks coincide, ensuring normal circulation of the heat transfer medium. The area of the slots 6 is 45-50% of the cross section of the steam channel 2.

The vapor condenses in the condensation zone and returns through the capillary structure 3 to the evaporation zone.

As the temperature in the evaporation zone increases, the liquid filling the hyperboloid 8 expands. This causes the helix of its N1 end and the disk 4 to turn along the helix. The latter overlaps the notches 6 of the fixed disk 5, reducing the flow area of the steam channel 2

The speed of the steam movement decreases, causing an increase in the temperature difference between the evaporation and condensation zones,. With a significant increase in the temperature of the heat source, the rotary disk 4 rotates at the limiting angle, causing a complete overlap of the passage through the steam channel 2. Dp The angle of rotation of the disk 4 is 60 °. Practically it is possible to ensure the rotation of the disk 4 to 50-180. The specified size of the gap 10 prevents discs 4 and 5 from abrasion.

FIG. 2

bb

e

Fy

Fig.Z

Compiled by S. Bugorsk Editor O. Bugir Tehred O. Sopko Proofreader: E. Sirokhman

Order 3078/43 Circulation 589 Subscription

VNIIPI State Committee SS CP

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Proektna st, 4

Claims (2)

1. ADJUSTABLE HEAT TUBE, comprising a housing with a steam channel, in which a valve is installed made in the form of two disks with slots, one of the disks being installed with the possibility of movement and connected via a transmission device to the drive in the form of a corrugated elastic element, characterized in that that, in order to simplify the design and increase reliability, the elastic drive element is made in the form of a single-cavity hyperboloid with corrugations located along its rectilinear generators, and the transmission device is made in the form Pr- <g of life. Lh. " f yo co 2. Pipe pop. 1, characterized in that the disks are installed in relation to one another with a gap not exceeding the magnitude of the elongation of the hyperboloid when moving it. The device operates as follows. When a heat pipe is operating with a given temperature of a source under 5 heat water, the drive - hyperboloid 8 does not work. In this case, the slots 6 of the fixed and rotary disks coincide, providing normal circulation of the coolant. The area of the slots 6 is 45-50Z section of the steam channel 2. The vapor condenses in the condensation zone and returns to the evaporation zone by capillary structure 3. ¹⁵ With increasing temperature in the evaporation zone, the liquid filling the hyperboloid 8 expands. This causes a turn along the helical line of its lower end and disk 4. The last ²⁰ ni overlaps the slots 6 of the fixed disk 5, reducing the passage section of the steam channel 2. The steam speed decreases, causing an increase in the temperature difference between the evaporation and condensation zones. With a significant increase in the temperature of the heat source, the rotary disk 4 rotates to the limit angle _{1 (} causing a complete overlap of 30 the passage section of the steam channel 2. For the design of the device shown in FIG. 1, the limiting angle of rotation of the disk 4 is 60 °. In practice, it is possible to ensure the rotation of the disk 4 to 150-180 °. The specified size of the gap 10 protects the discs 4 and 5 from abrasion.