SU2312A1 - Heat exchanger for cooling oil and other liquids - Google Patents

Description

The present invention relates to the type of heat exchangers in which the cooling and cooling fluids are directed towards each other. In addition to the counter-flow of liquids entering the apparatus described, one above and one below, to increase the heat transfer time, the cooling fluid makes a zigzag path along flat campers through which it flows, and the cooled fluid moves between them using scrapers from the center to the periphery in one camera and back to the next. In FIG. 1 shows a vertical section of the apparatus, FIG. 2 is a plan in the terminal chamber; FIG. 3 is a detail of the device of the lower part of the apparatus in a vertical section; FIG. 4 is a plan of the camera; FIG. 5 is a detail of a chamber with doors in a vertical section; FIG. 6 is a horizontal section of the cleaning doors of the chamber; FIG. 7 is an external view of the door; FIG. 8, 9 - scrapers in the plan; FIG. 10 is a vertical section of the scraper along line 17-17 in FIG. 9, and FIG. 11 is a side view of the scraper shown in FIG. 9. On the metal base 20 (Fig. 1 and 3) a frame 21 is strengthened, with a series of liquid cooling chambers located above it, containing the upper chamber A, several chambers J5 and 6 and the lower chamber D, through the center of which the axis passes 23 and which are bolted 22. The entire camera system may be enclosed in a wooden box (shown in dotted lines) to maintain appropriate insulation. A scraper E is placed over each camera B, fixed on axis 23 by means of a bearing 56, and a C-scraper F above each chamber is fixed on axis 23 connected by a pumper

Couplings 50 with a flange 57, sitting in a stopper 24 on the base 20. On the axis 23 a screw wheel 25 is fastened, coupled with a screw 26, which sits on the drive axis 27, equipped with working and idler bars 28.

Each scraper consists of a shoulder 60, provided with inclined ribs 33 and 36f located perpendicular to the shoulder, and two side blades 67 (FIG.). The latter are provided with lugs 62, which at the ends have cheeks for installation in the sockets 63 33 and 36. Each shoulder 60 also has a knife 64 inserted into the socket at the end of the shoulder. The chambers have a flat shape and are cast with incomplete baffles 47 (Fig. 4) to direct the coolant in order to increase the contact surface of the chamber with cold brine.

The cooling process is that the oil or other liquid intended for cooling enters chamber A (FIGS. 1 and 2) through the inlet pipe 29, which goes into the space surrounding the upper sub-bed 30, and through the central opening 37 in chamber A It passes into the space formed by the flange 32 of chamber B supporting chamber A. Next, the oil is picked up by scraper E, which, removing it from the walls of chambers A vi B, cleans those and moves it to the periphery, for which the scrapers are equipped with inclined ribs 33 (Fig . eight). The oil then passes through the openings 34 at the periphery of chamber B and enters the next compartment between chambers B and C, of which the latter is equipped with a flange 35, similar to chamber B. In the space between chambers B and C, oil is picked up by scraper F with ribs 36 inclined in the opposite direction (Fig. 9) to the edges of the scraper E, and is directed to the central opening 37, through which it passes to the next compartment, etc., until it leaves the last inter-chamber space through the central opening 38, having and hole 37, oval shapes And through the outlet pipe 39.

The cooling liquid, mainly cold brine, flows in the opposite direction, entering the lower chamber D through the inlet pipe. After passing through chamber D, the brine leaves it through the hole in the rim 42, which coincides with the corresponding opening of chamber B. After passing the last zigzag path formed by partitions 47, the cooling fluid enters the next high chamber C equipped with inlet 44 and outlet 45 (Fig. 4). Thus, the cooling fluid moves upwards, the passage is successively through chambers equipped with partitions 47, and exits the upper chamber A through the outlet 46 (Fig. 2) of chamber B.

The radiation loss is very small, since, with the exception of the side surface, the walls of the brine chambers are in direct contact with the cooled liquid.

In apparatuses in which brine is used as a cooling substance, the channels formed by the partitions 47 are clogged and therefore must be cleaned. For this purpose, in the proposed apparatus, the brine chambers are provided with doors 48, which serve both for cleaning and for inspecting the chambers, thereby eliminating the need for disassembling the apparatus for cleaning it. The end caps A and O are provided with fork lugs through which the bolts 22 holding the cameras placed one above the other pass, thereby facilitating the assembly and disassembly of the apparatus (Figs. 1, 2 and 3). Thus, for disassembling the apparatus, it is necessary to only lift the chambers one by one above the upper end of the axis 23, thereby significantly reducing the size of the room for mounting the apparatus.

The lower end of the axis 23 is supported by a hydraulic support for (POSSIBLE reduction of friction. For this purpose, the chamber 49 of the support 24 is connected by an opening 55 to a hydraulically powered battery (not shown in the drawing), the pressure of which on the lower end of the axis 23 balances its weight together with the scrapers. Likewise 5 / and the bushing 24 can be removed by moving the coupling 50 downward until the narrowed end 52 is released from the axis 23. To remove the draining oil, the apparatus is supplied with a cup 53 with a discharge pipe 54. To facilitate assembly and repair, the helical wheel 25 made out of two halves fastened together. SUBJECT OF THE PATENT 1. A heat exchanger for cooling oil and other liquids with oncoming movement of cooling and cooled liquids, consisting of two series of consecutively superimposed hollow chambers, characterized by the message of the cooled liquid, besides the oncoming to the cooling one, a movement from top to bottom, still sequentially varying from the center of the device to the periphery and back, is equipped with scrapers E, F (Fig. 1, 8, 9, 10, 11), mounted inside the inter-chamber spaces on the central axis of the apparatus and having edges inclined alternately in different directions (Fig. 8 and 9), while chambers B, C are equipped with incomplete partitions 47 (Fig. 4) , in order to communicate the coolant of the zigzag movement inside the chambers as it moves upwards in the apparatus. 2. At the use of doors 48 (figs. 3, 4, 5, 6, 7) indicated in p. 1 in the side walls of the chambers, in order to clean the latter without disassembling the whole apparatus. 3. When the apparatus specified in paragraph 1 is supplying end chambers A D with forked protrusions (Figs. 1, 2, 3), in order to simplify assembly and disassembly of the apparatus. 4.With the use of the movable coupling coupling 50 (Fig. 1) for coupling the axle 23 with point 51, as indicated in item 1 of the apparatus.

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