SU616518A1 - Radiator - Google Patents

Description

(54) RADIATOR

The invention relates to heat exchangers, in particular, to radiators for cooling the heat in media in the internal combustion systems of transport vehicles of stationary machines, for example, as sections of the engine of a diesel locomotive refrigeration compartment.

Radiators of cooling systems for NIN engines are known, containing a bundle of heat-finned heat pipes or tubular-flame-sheeted tubes within which circulations. ruet cooling medium; ij. Outside pipes or pipes (plate sections are washed by gas or other medium at lower temperatures.

Such radiators have a low heat dissipating capacity per unit heat exchange surface, and in order to increase the heat removal of these structures, it is necessary to increase the cooling surface, which entails an increase in size

Also known are radiators made from a bundle of individual heat pipes sealed at the ends.

and partially filled with ε nappositle, the design of which increases the heat dissipation without increasing the dimensions of r2j.

The disadvantage of such a radiator is the unevenness of operation of individual tubes, as a result of which the heat flux from the heat exchange surface is insignificant.

Heat flow equalization, i.e. uniform operation of heat pipes is achieved in another well-known radiator design, in which a bundle of heat 1x tubes filled with an intermediate heat carrier is connected in the evaporation zone using the common chamber B, thanks to the outer sparring area, the same pipe operation takes place,

However, even in such structures of 15P1, the heat dissipation of the ceramic arises due to the possible power of one of the tubes, which operate individually in the condensin zone.

The aim of the invention is to increase the specific heat flux.

The ego is achieved by the fact that the ends of the heat pipe bundle in the concentration zone are united by a common chamber formed by an amplifying plate and a bottom plate, and the zones of lonsensation and evaporation of the pas tube bundle are divided by an intermediate partition.

The internal surface of the pipes along the entire evaporation length 3OHij is provided with rof.bpapo finning.

FIG. 1 shows a radiator, a general view, and FIG. 2 is a section A-A in FIG. 1; FIG. 3 is a view along arrow B on fkg, Ij in FIG. 4 shows a section B-B in FIG. Ij in FIG. 5 - the node in FIG. four; in fig. 6, node 11 in FIG. one; in fig. 7 - node W in FIG. 2; in fig. 8 - implementation of the partition.

The radiator (or its secdie) consists of a bundle of individual tubes 1, mounted at the ends (with a spark or solder) into the common reinforcing discs 2, hermetically welded around the periphery or welded to the bottoms 3. The bottom shape over each of the tubes has corresponding recesses, communicating with each other and forming a common chamber 4 (fig. b), the shape of which in the condensation zone 5 is identical to the shape of the chamber in the evaporation zone 6. On the bottom 3 of the condensation zone 5, the valve 7 is filled with an intermediate “coolant”. Through the valve 7, in addition, vacuuming and sealing of the tubes are carried out, which are filled with the heat carrier only partially. Since the tubes 7 are united by a common chamber - 4, the filling level in all the tubes is the same.

An intermediate baffle or tube sheet 8 connects the tubes 1 into one unit and separates the condensation and vapor zones. The partition 8 can be connected to the tubes 1 by soldering, flaring or another similar method. The tides 9 of the fumes are equipped with fastening elements 1О and d, using gaskets 11 installed on the collector 12, which conducts the cooled medium.

In the supply zone 6 (or by evaporation in the heat removal (or condensation zone 5) about the tubes 1 of the beam, they are provided with heat transfer plates (or external fins) 13. The inner surface 14 of the tubes 1 is provided with an additional evaporation fin 15, made for example 55 The bends of the 16 corrugations are in direct contact with the inner walls of the pipes. The internal fins can be made as guaranteed contact bends can be achieved by, for example, sintering,

The pipes 1 are supplied with fins on the inner walls only in the evaporator zone 6,

In the adiabatic zone n in the upper part of the condenser zone of the pipe 1 are free of heat exchange plastic 13, these zones can be covered with flaps 17 to eliminate irrational consumption (or through cooling / cooling of the medium and more efficient heat exchange in the working zones.

A radiator, partially filled with an intermediate heat carrier, evacuated and sealed by known methods, works in the following way.

Through the collector 12, a cooled medium is circulated, the temperature of which is to be reduced to the required level. The flow through the collector channels 12, the cooled medium washes on the onion 3 and the supper board 2, which is common to all tubes for chamber 4 in the evaporation zone, and the tube 1 with heat transfer plates 13, which facilitate intensive heat exchange. When this occurs, the elements in the collector 12 are heated, and heat exchange spreads to the internal fins 15. Thus, heat is applied to evaporate the intermediate heat transfer fluid through the developed evaporation surface, which 6 significantly increases the heat load to the evaporator part of the radiator without increasing its dimensions ; The intermediate coolant vapors, the diversions of the difference between the evaporative and condenser zones, rush upward along the tubes 1 of the beam. Since in the evaporation zone 6 the tubes 1 are joined by a common chamber 4, the evaporation process and the operation of each tube proceed uniformly.

Contacting the cooler walls of pipes 1 in condensation zone 6, where they are washed by a cooling medium whose temperature is lower than the temperature of the medium in the evaporation zone, the intermediate heat carrier vapors condense on the inner walls of pipes 1, heat exchange occurs in the reverse order, i.e. from the coolant to the walls of the pipes, from them into the plates and then to the surrounding medium.

Condensed coolant vapors in the form of droplets flow along the pipe walls to the evaporation zone, and the cycle is repeated.

The uniformity of pipe operation in condensate

Claims (3)

Mr. Topyom. R oov of the QCK site are the same chamber 4 as in the evaporation zone 6. In the event of a possible failure (due to blockage of the steam channel) of at least one of the pipes, the condensation is evenly distributed on the bottom along the pipes that remain with the pipes, a similar phenomenon will occur in the evaporation zone. Favorable to such a design of the radiator increases the specific heat flux. Claims. 1. A radiator containing a bundle of heat pipes filled with an intermediate heat carrier and connected in the evaporation zone with the help of chamber No. 1, in order to increase the specific heat flux, the ends of the pipes in the zone the condensations are also united by a common chamber formed by the reinforcement plate and the bottom, and the condensation and evaporation zones are separated by an intermediate partition .. 2. Radiator according to claim 1, which is the inner surface of the pipes along the entire length of the zone evaporation provided with corrugated fins. , Sources of information taken into account in the examination: 1. US patent N 3326278, cl. 165-1O5, 1967. 2.Patent of France No. 294947, cl. F O1 P 9 / OO, 1972. 3. US patent number 329843O, cl. 165-105, 1967. fig 616518; 4- D .7Dukh G7 // ew b