The heat exchanger
(57) Abstract:Usage: in heat technology, in particular, in the cooling systems of internal combustion engines. The essence of the invention: improvement of thermal and mass and size parameters, as well as the increased reliability provided by the fact that the heat exchanger containing at least two tank connected by tubes to pass, mainly, the liquid coolant having walls arranged with a constant pitch of wydawcy 7 forming the outer cavity and an inner ledges, and United with the walls of the tubes outer transverse edges 6a, located along the length of the tubes with a constant step b and forming channels for the passage of the second, predominantly gaseous fluid at an angle to the direction of passage of the first fluid, step vydavac 7 made more step b of edges 6a. 3 C. p. F.-ly, 6 ill. The invention relates to a heating engineer, and in particular to heat exchangers, such as radiators, cooling systems of internal combustion engines.Known heat exchangers, such as radiators, cooling systems of internal combustion engines containing at least two tank connecting tube designed the side, for example soldered, the outer transverse ribs that are constant along the tube step and forming channels for the flow of the second fluid predominantly gaseous, e.g. air, at an angle to the direction of flow of the first fluid. M. the motor cycle", 1958 
When creating such heat exchangers there is a task to provide the required heat transfer for optimum weight and performance, low resistance to the passage of fluids and technological suitability for mass production.Known heat exchangers of the specified type with tubes having walls arranged with a constant along each tube step wydawcy forming the outer cavity and an inner protrusions 
In such heat exchangers due to the increased heat transfer between the first fluid and the tube wall can increase the total heat transfer to either reduce the weight and dimensions for a given heat exchange.However, due to the fact that part of the outer transverse ribs may be placed against the outer depressions on the walls of the tubes and not to be in thermal contact with the walls of the tubes, in such heat exchangers is not achieved optimal performance.SIS made cross wydawcy, forming an outer cavity and an inner projections  In such a tube, the depth of each depression is made constant. This embodiment, while also improving heat transfer between flowing inside the tube by the fluid and the walls of the tube by increasing the degree of turbulence in the coolant flow, is not optimal for strength reasons and does not reduce the thickness of the walls.Thus, despite the known heat exchangers of this type, their thermal, mass and strength properties are not optimal.The basis of the invention was tasked to create a heat exchanger with high heat transfer, reduced consumption and increased strength.The main aim of the invention is the improvement of thermal and mass and size parameters of the heat exchangers of this type. In addition, the aim of the invention is to increase the strength of the tubes of such heat exchangers. This goal is achieved by the fact that the heat exchanger containing at least two tank connecting tube designed for flowing the first fluid, primarily liquid between the tanks and having walls spaced the ones with the walls of the tubes, for example soldered, the outer transverse ribs that are constant along the tube step and forming channels for the flow of the second fluid predominantly gaseous, e.g. air, at an angle to the direction of flow of the first fluid, according to the invention the step above vydavac more than a step above the transverse ribs.It is recommended to perform the step above vydavac to step above the outer transverse edges equal to the ratio of two relatively Prime numbers, the smaller of which more than a dozen.This embodiment of the heat exchanger allows you to minimize the combination of the outer cavities of the tubes and the outer transverse edges and thereby eliminate gaps between them, impairing heat transfer.The depth of each of the specified trench in a direction across the tube is made variable with the highest value in its middle part.Each hollow in cross section, held across the tube may have an arched shape.This embodiment of the tube increases its strength and rigidity, which reduces the wall thickness of the tube and thereby to reduce its consumption.Further, the invention is illustrated on-tape heat exchanger according to the invention, General front view of Fig.2 tubular heat exchanger according to the invention, a General front view of Fig. 3 section III-III in Fig.1; Fig.4 section IV-IV in Fig.3; Fig.5 section V-V in Fig.2; Fig.6 section VI-VI in Fig.5.As shown in Fig.1 and 2, the heat exchanger includes two tank top 1 and bottom 2, connected by tubes 3 held for flowing liquid coolant between the tanks, and rigid side walls 4. The upper tank 1 has a filler neck 5 and the inlet pipe (not shown). The lower tank 2 has a discharge pipe (not shown). With walls (not labeled) of the tubes 3 are connected to the outer lateral edges 6A (Fig.1) formed by corrugated strips arranged between the tubes 3 and is also marked 6A, or formed by plates 6b (Fig.2). The connection of the transverse edges with the walls of the tubes is carried out by means of soldering.Tubes 3 are on the walls of the transverse wydawcy 7 (Fig.3-6) that are constant along each tube step d. Wydawcy 7 form an external cavity 7a and the inner protrusions 7b and are staggered on opposite walls of the tubes 3. The opposite wall of the tube 3 and tube tape heat exchanger, which is made of wydawcy 7, the imp is the intellectual property).Transverse ribs 6A, 6b are constant along the tube step b to form 8 channels for the flow of the second gaseous fluid, for example air, from the outside of the tubes 3 at an angle to the direction of flow of the liquid coolant inside the tubes. Step and vydavac 7 and step b of the transverse ribs are made different, namely: step and more step b. The maximum size of each of wydawcy 7 in the direction along the tube 3 is larger than the thickness d of each rib 6A, 6b. Step b transverse ribs 6A, 6b is larger than the size of S. the Ratio of step a to step b is equal to the ratio of two relatively Prime numbers, the smaller of which more than a dozen.Transverse ribs 6A formed of corrugated ribbons, made the slits 9, the edges of which are bent so that these edges formed by the slits for the passage of the second fluid at an angle to the surfaces of the ribs. Transverse ribs 6b formed by the plates may have corrugations (not shown in the drawings).The depth of each trench 7a in the wall of the tube 3 (Fig.6) is made variable, and has the largest value in the middle of wydawcy 7. Depression 7a in section conducted across the tube has an arcuate shape.The heat exchanger works as follows.First theplanet ACOK 2 and is discharged from it. A second fluid having a second temperature, flows through the channels 8. As a result of heat exchange between the heat transfer through the walls of the tube 3 there is a change of temperature. The inner protrusions 7b increase the turbulization of the first fluid and improve heat transfer. The transverse outer edges 6A, 6b, with thanks to the above described features good thermal contact with the walls of the tubes, also help to improve heat transfer. The above-described shape of the depressions formed by wydawca on the walls of the tubes, contributes to the strength and rigidity of the tubes. As a result, the heat exchanger has a given mass parameters improved thermal performance or under specified thermal characteristics of less weight and less consumption.The most successful of the invention can be used in the radiator liquid cooling systems of internal combustion engines of automobiles and tractors, gas-air heat exchangers transport and stationary power plants, heating systems, ventilation and air-conditioning. You can use the invention in refrigeration machines. 2. The heat exchanger under item 1, characterized in that the step of the above vydavac to step above the outer transverse edges is equal to the ratio of two relatively Prime numbers, the smaller of which more than a dozen.3. The heat exchanger under item 1, characterized in that the depth of each of the specified trench in a direction across the tube is made variable with the highest value in its middle part.4. Heat exchanger according to p. 3, characterized in that each hollow in cross section, held across the tube is made arcuate.
FIELD: agriculture: heat engineering equipment for poultry and stock-rearing.
SUBSTANCE: the invention is dealt with the field of agricultural heat engineering equipment ensuring a heat transfer from one heat-exchanger to another in presence of aggressive corrosion-influencing components in one of them. The equipment may be used in the gas-air ventilation facilities of heat recovery in poultry and stock-rearing farms. The method of production of a cross-running heat exchanger out of a polymeric material containing a package made out of polymeric cellular plates bound to each other and encased in a box ensuring an inlet and an outlet of warm and cool air streams. At that the cellular plates located in one direction in a package are bound to each other by a two-sided polymeric adhesive tape through gaskets made out of the same polymer and placed along the surface and perpendicularly to directions of cells in a plate, are kept till full polymerization of the joints with following formation of the package on all its corners with metal angle sections into a rigid metal framework. At that in one of the vertical sides of the angle section they drill some bores ensuring a free running of a liquid. Then using a sliding fit the package is inserted in the guides made out of the angle sections and mounted perpendicularly to the corners of the air-distributive box so, that the bores of the lower corner of the package meet the bores of a lateral wall of a guide. The package is fixed in the guides formed by the metal angle sections. The bores of the lower angle section of a guide should be located opposite to the bores drilled-in in the lower wall of the air channel of the box placed above a draining container. The invention ensures the necessary tightness of the channels linking the heat exchangers, possibility to use the heat exchangers at low temperatures and also to increase the cost efficiency of the polymeric material cutting.
EFFECT: the invention ensures the necessary tightness of the channels linking the heat exchangers, possibility to use the heat exchangers at low temperatures and increased the cost efficiency of the polymeric material cutting.
FIELD: gas turbine construction.
SUBSTANCE: matrix can be used in heat exchangers of heat regeneration heat system's exchanger, as well as for warming up (cooling down) gas or liquid in different heat-sing installations. Matrix of ring-shaped lamellar heat exchanger has heat-exchange members formed by lamellar plates with corrugated parts and openings of collectors, which are connected by means of lugs of internal and external diameters of plates or by means of lugs of collectors. Corrugated parts and collectors are limited by internal and external diameters of ring-shaped plate, or by lines being equidistant to them, and by frontal planes being parallel to axis of symmetry of corrugated parts. Axes of symmetry of any part and of collectors pass through center of plate. Angles between frontal planes of distributing and gathering collectors are equal to each other. Vertexes of angles are disposed at concentric circles having the same or different radiuses. Area of distributing collector relates to gathering collector is directly proportional to relation of corresponding radiuses of vertexes of angles and belongs to 0,4-0,8 interval.
EFFECT: improved efficiency of operation of heat exchanger.
2 cl, 7 dwg
FIELD: mechanical engineering; air conditioning and ventilation.
SUBSTANCE: invention relates to heat exchange devices used in air conditioning and ventilating plants, namely, to methods of evaporating cooling to dew point and to plate devices for evaporative cooling. According to invention, plates of plate device are made so that channels and perforation to pass from dry side to wet side can be at least partially wetted with evaporating liquid. Chute is provided made in part of plates which temporarily holds evaporating liquid in contact with wick material on surface of wet side of plate. Evaporating liquid flows along chute through perforation for liquid into following chute. When chute of plate from wet side is from above, perforation for liquid is on side forming reservoir for wetting opposite wick materials. When flow move along dry side, heat is conveyed to plate. In proposed method several heat transfer plates are used. Said plates have wet and dry sides and they form chutes. Plates are wetted form wet sides with evaporating liquid and they pass separately two flows, namely, working and product ones through dry sides. Flow of working gas passes along dry side and gets through perforation into channels on wet side which is cooled owing to evaporation, thermal conductivity of plate and its heat radiation.
EFFECT: provision of more effective air flow and heat transfer owing to evaporative cooling with intermediate coolant.
SUBSTANCE: invention is referred to thermal engineering and may be used in district heating systems for heating service water. Heat exchanger contains primary circuit channel located between inlet and outlet connections, secondary circuit channel located between supply pipeline assembly and return pipeline assembly, heat-conducting device between primary circuit channel and secondary circuit channel, and temperature sensor. Temperature sensor is located between secondary circuit channels close to connection with return pipeline. Besides, temperature sensor contacts with heat-conducting device or situates at small distance from it.
EFFECT: space saving in heat exchanger when temperature is measured and good results are achieved.
7 cl, 5 dwg
FIELD: heating systems.
SUBSTANCE: inventions are intended for heat exchange, and can be used for heating heat carriers. Heat exchanger core consists of two groups of alternating plates. The latter are connected to each other and each plate in each group is made at least in one of its surfaces at least with three platelets, each of which consists of a group of parallel channels, holes passing through the first and second group of plates for transferring fluid heat carriers to the platelets and from them, and distributing channels connecting opposite ends of each platelet in each of the plates to some of the holes related thereto. Distributing channels that are connected to each of the platelets in the plates of the first group are located so that they cross the distributing channels that are connected to some of the appropriate platelets in the plates of the second group. Heat exchanger can include at least one core. Heat exchanger can include headers connected to the core. Heat exchanger can include at least two cores. In heat exchanger the cores are attached rear side-to-rear side, and headers are connected to assembly for transferring fluid heat carriers to the cores and from them.
EFFECT: providing required thermal efficiency, and decreasing dimensions and mass of heat exchanger.
31 cl, 16 dwg
SUBSTANCE: invention is of relevance for operation of apparatus for air cooling of gas and is to be utilised in power engineering industry. The proposed method of the heat exchanger apparatus fabrication envisages the following activities: fabrication of finned heat exchange tubes, a framework, at least a single apparatus section with lateral walls and beams joining them together, gas inlet and outlet chambers; packing the section with a bundle of finned one-way-flow heat exchange tubes; fabrication of a manifold for gas supply and removal, a support structure and their assembly. The section walls are represented by channel bars with shelves turned towards the tubes and are equipped with fairing displacers forming the U-bar reinforcement ribs. One of the methods of the apparatus heat exchanger section fabrication envisages positioning an optimal number of tubes within the section in accordance with the dependence specified within the framework of the invention concept. An alternative method envisages assembly of the section elements on a holding frame designed within the framework of the invention concept. A third method envisages assembly of the elements in a specific sequence combined with performance of hydraulic pressure testing. The method of fabrication of the apparatus chamber for gas inlet or outlet envisages manufacture of the chamber elements and their assembly in a sequence developed within the framework of the invention concept. The method of fabrication of the gas delivery and removal manifold envisages manufacture of the manifold body sections and their assembly with the help of the tool tab designed within the framework of the invention concept. Method of hydraulic pressure testing of the apparatus sections envisages mounting the section to be tested on the hydraulic test bench designed within the framework of the invention concept with the pressure increase and drop modes as per the dependence given. Method of the manifold hydraulic pressure testing envisages it being mounted on the hydraulic test bench or a loft with the help of support structures designed within the framework of the invention concept.
EFFECT: enhanced effectiveness and precision of assembly of the apparatus and elements thereof combined with reduction of labour and material consumption, reduction of hydraulic losses occurring in the apparatus as well as technological simplification of the hydraulic pressure testing of heat exchanger sections and manifolds of the apparatus for air cooling of gas, improved effectiveness and reduced labour intensity of their performance.
25 cl, 30 dwg
SUBSTANCE: proposed multi use plate of the plate heat exchanger contains the following: the extreme and middle parts, lying in the first plane; the rib, mating these parts, the middle of which lies in the second plane parallel to the first; the first and the second pairs from the first and the second holes same in size on the opposite sides of the middle part. These pairs of holes are positioned mirror-wise relatively to the transverse axis, passing in the first or the second plane equidistantly between the pairs of holes; at that the first and the second hole in each of these pairs of holes are formed in the sections of the middle part, lying respectively in the first and the second planes; the entire space of the middle part between the sections with holes is occupied by alternating recesses and protruberances, at that the recesses bottom and the protuberances tops are lying respectively in the first and the second planes. The package assembly of such plates consists in consequent plates packing one by one with the similar planes with the rotation of each even or each odd plate by 180° relatively to the transverse axis, after that provide the plates welding in the contact places of their similar planes. The turbulizing elements can be placed in some of the forming cells, that allows to change the hydro-gasdynamic and heat-mass exchange characteristics of the working channels.
EFFECT: operating means range expansion.
8 cl, 3 dwg