The invention relates to heat-exchange equipment and can be used for heating or cooling of liquids and gaseous media.

Already known, the design of which involves planning at least one unit of a node of a spiral heat transfer tube, which consists of a folded heat transfer tube having a complex lengthwise cut of the pipe wall, wound in the form of spiral, the plate is located between the links of the spiral heat transfer tube, which are separated by one from one, or a plate with a wound flat lid, is usually used for each node of a spiral heat transfer tube and is concentrically inserted between adjacent folded heat exchange tubes by the multi-stage spiral heat transfer, and this multi-stage body of the spiral heat transfer tube is located in the container and at the ends of the central side of the tube, and the ends of the outer tube each of the spiral tubes of the heat exchangers are arranged successively in the container, and the inner part of the container is used as one flow system and the inner part each of the spiral heat exchange tube blocks is used as another flow system accordingly, so it is possible to carry out the heat exchange on the counter-flow in the case of a crossover flow or an inexpensive flow between two fluid media (Publication JPS5188865 (U) 1976-07-16).

The closest to the proposed is a spiral heat exchanger, in the design of which the spiral path (7) is made between the spiral partitions (3), equipped with a vessel; a plurality of spiral tubes (4) which are in contact with the spiral path (7), are arranged vertically; and heat exchanges between the second fluid medium flowing through the spiral tubes (4) and the first fluid medium flowing through the spiral path (7) outside the spiral tubes (4). The width of the flow path (FP) of the spiral path (7), through which the first fluid medium flows outside of the spiral tubes (4) in the direction parallel to the central direction of the spiral tubes (4), is equivalent to the width of the passage path (PP) of the spiral path (7), trough which the first fluid flows from the outside of the spiral tubes (4) in a direction perpendicular to the central direction of the spiral tubes (4) (Publication WO201 5020047 (A1) 2015-02-12).

The technical aim of the invention is creating of a multicontour multifunctional spiral heat exchanger with the possibility of connection two or more contours both high and low pressure for different combinations of their function, namely: independent their work of each other, their sequential work with sequential connection and others mixed combinations of their connections with low pressure or high pressure media.

This task is achieved due to a new construction of multicontour multifunctional spiral heat exchanger, which includes: a housing in a form of a channel for the passage of one or several low pressure media, twisted in the direction from the side walls of the housing to the center, where the walls of the channel are a dividing wall, and characterized in that the channel for the passage of one or several low pressure media is divided into at least two parts by partitions and each part of the channel for the passage of one or several low pressure heat exchange medium has inlet and outlet pipes for external connection, and outlet and inlet pipes arranged sequentially next to each other have a connection unit equipped by three-way valves or shut-off devices for regulating the flow direction of one or several low pressure heat exchange media; at least two independent contours for the passage of the one or several high pressure media made in the form of a bundle of spiral tubes located inside of each part of the channel for the passage of low pressure heat exchange medium and are the channels for passage one or several high pressure media, wherein the ends of each spiral pipe are connected to the inlet and outlet manifolds of high pressure, and outlet and inlet manifolds are connected to an external high pressure media sources through an inlet and outlet distribution collectors of the one or several high pressure media equipped by three-way valves or shut-off devices and shut-off valves for regulating the flow direction of the one or several high pressure heat exchange media, while the free space between the dividing walls of channel for the passage of one or several low pressure media and the bundle of a spiral tubes forms a channel for the passage of one or several low pressure heat exchange media.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1 is the multicontour multifunctional spiral heat exchanger in a cross- sectional view A-A.

Fig. 2 is the multicontour multifunctional spiral heat exchanger in a cross- sectional view B-B. Fig. 3 shows the operation diagram and arrangement of the multicontour multifunctional spiral heat exchanger in unrolled view, where:

1 - housing in a form of a channel; 2 - dividing wall; 3 - partitions of a channel for the passage of one or several low pressure heat exchange media; 4 - inlet pipes for external connection of the one or several low pressure heat exchange media; 5 - outlet pipes for external connection of the one or several low pressure heat exchange media; 6 - connection unit of outlet and inlet pipes of the one or several low pressure media with tree-way valves or shut-off devices; 7 - channels for passage one or several high pressure heat exchange media; 8

- inlet manifolds of the one or several high pressure heat exchange media; 9 - outlet manifolds of the one or several high pressure heat exchange media; 10 - channels for the passage of the one or several low pressure heat exchange media; 11 - inlet distribution collector of the one or several high pressure media; 12 - first three-way valve or shut-off devices of the inlet distribution collector of the one or several high pressure media; 13 - second three-way valve or shut-off devices of the inlet distribution collector of the one or several high pressure media; 14 - shut-off valves of the inlet distribution collector of the one or several high pressure media; 15 - outlet distribution collector of the one or several high pressure media; 16 - first three-way valve or shut-off devices of the outlet distribution collector of the one or several high pressure media; 17 - second three-way valve or shut-off devices of the outlet distribution collector of the one or several high pressure media; 18 - shut-off valves of the outlet distribution collector of the one or several high pressure media.

The technical aim of the invention is creating of a multicontour multifunctional spiral heat exchanger with the possibility of connection and working two or more contours both high and low pressure for different combinations of their function, namely: independent their work of each other, their sequential work with sequential connection and others mixed combinations of their connections with low pressure or high pressure media.

This set goal is achieved due to a new construction of the multicontour multifunctional spiral heat exchanger comprising: a housing in a form of a channel 1 for the passage of one or several low pressure heat exchange media, twisted in the direction from the side walls of the housing to the center, where the walls of the channel are a dividing wall, 2 and characterized in that, the channel 1 for the passage of one or several low pressure media is divided into at least two parts by partitions 3, and each part of the channel 1 for the passage of the one or several low pressure heat exchange media has inlet 4 and outlet 5 pipes for external connection, and outlet 5 and inlet 4 pipes arranged sequentially next to each other have a connection unit 6, equipped by three-way valves or shut-off devices for regulating the flow direction of the one or several low pressure heat exchange media; at least two independent contours for the passage of one or several high pressure media made in the form of a bundle of spiral tubes located inside of each part of the channel 1 for the passage of low pressure heat exchange medium and are the channels 7 for the passage one or several high pressure media, wherein the ends of each spiral pipe are connected to the inlet 8 and outlet 9 manifolds of high pressure, and an inlet manifolds 8 are connected to one or several high pressure media sources through a inlet distribution collector 11 of the one or several high pressure media, equipped by three-way valves or shut-off devices 12, 13 and shut-off valves 14 for regulating the flow direction of one or several high pressure heat exchange media, and outlet manifolds 9 are connected to an outlet distribution collector 15 of the one or several high pressure media, equipped by three-way valves or shut-off devices 16, 17 and shut-off valves 18 for regulating the flow direction of one or several high pressure media, wherein a free space between the dividing wall 2 of channel 1 for the passage of one or several low pressure media and the bundle of spiral tubes are a channel 10 for the passage of the one or several low pressure heat exchange media.

Multicontour multifunctional spiral heat exchanger operates in several modes as follows:

1. The one or several low pressure heat exchange media enters the multicontour multifunctional spiral heat exchanger through the inlet pipes for external connection of the low pressure heat exchange media 4, and passes through the channels for the passage of low pressure heat exchange media 10, and leaves multicontour multifunctional spiral heat exchanger through the outlet pipes for external connection of the low pressure heat exchange media 5. Wherein the three-ways valves or shut-off devices of connection units 6 of outlet 5 and inlet 4 pipes located sequentially next to each other are in a position that covers the connecting jumper between them. The one or several high pressure heat exchange media enters the multicontour multifunctional spiral heat exchanger through the distribution collector 11 and inlet manifolds 8, and passes through the channels of one or several high pressure media 7, and leaves multicontour multifunctional spiral heat exchanger through the outlet manifolds of the heat exchange one or several high pressure media 9 and the outlet distribution collector 15. Wherein the three-ways valves or shut-off devices 12, 13 and shut-off valves 14 of the distribution collector 11 and the three-ways valves or shut-off devices 16,17 and shut-off valves 18 of the distribution collector of the one or several high pressure media 15 are in a position that covers only connecting jumpers between them. The heat exchange in this mode occurs independently in each part of the channel 10 both for the one or several low pressure media and the one or several high pressure media. 2. The one or several low pressure heat exchange media enters the multicontour multifunctional spiral heat exchanger through the inlet pipes for external connection of the low pressure heat exchange media 4, and passes through the channels for the passage of low pressure heat exchange media 10, and leaves multicontour multifunctional spiral heat exchanger through the outlet pipes for external connection of the low pressure heat exchange media 5. Wherein the three-ways valves or shut-off devices of connection units 6 of outlet 5 and inlet 4 pipes located sequentially next to each other are in a position that covers the connecting jumper between them. The high pressure heat exchange medium enters multicontour multifunctional spiral heat exchanger through the distribution collector 11 and inlet manifolds 8. Wherein the three-ways valves or shut-off devices 12,13 and shut-off valves 14 are in a position that provides a unified flow of the one high pressure heat exchange medium through the inlet distribution collector 11 towards inlet manifolds 8. The high pressure heat exchange medium passing through the channels 7 exits multicontour multifunctional spiral heat exchanger through the outlet manifolds of the heat exchange one or several high pressure media 9 and outlet distribution collector of the one or several high pressure media 15, wherein the three-ways valves or shut-off devices 16, 17 and shut-off valves 18 are in position that provides a unified flow of the one high pressure heat exchange medium through the outlet distribution collector 15. The heat exchange in this mode occurs independently in each part of the channel 10 for the one or several low pressure media, while the heat exchange for high pressure heat exchange medium occurs in the all parts of the heat exchanger from one source of high pressure medium. 3. When the three-ways valves or shut-off devices of connection units 6 of outlet

5 and inlet 4 pipes located sequentially next to each other are in a position that provides a unified flow of low pressure medium through all parts of the channel 10, the low pressure heat exchange medium enters the multicontour multifunctional spiral heat exchanger through the first inlet pipe for external connection of the low pressure heat exchange media 4, passes sequentially through the all parts of the channel 10 and leaves multicontour multifunctional spiral heat exchanger through the last outlet pipe for external connection of the low pressure heat exchange media 5. The high pressure heat exchange medium enters multicontour multifunctional spiral heat exchanger through the distribution collector 11 and inlet manifolds 8. Wherein the three-ways valves or shut-off devices 12,13 and shut-off valves 14 are in a position that provides a unified flow of the one high pressure heat exchange medium through the inlet distribution collector 11 towards inlet manifolds 8. The high pressure heat exchange medium passing through the channels 7 exits mu!ticontour multifunctional spiral heat exchanger through the outlet manifolds of the heat exchange one or several high pressure media 9 and outlet distribution collector of the one or several high pressure media 15, wherein the three-ways valves or shut-off devices 16, 17 and shut-off valves 18 are in position that provides a unified flow of the one high pressure heat exchange medium through the outlet distribution collector 15. In this mode the heat exchange occurs in the all parts of the channel 10 generally for the low pressure heat exchange medium, and the heat exchange for the high pressure medium occurs in the all parts of the heat exchanger from the one source of the high pressure medium.

4. When the three-ways valves or shut-off devices of connection units 6 of outlet 5 and inlet 4 pipes located sequentially next to each other are in a position that provides a unified flow of low pressure medium through all parts of the channel 10, the low pressure heat exchange medium enters the multicontour multifunctional spiral heat exchanger through the first inlet pipe for external connection of the low pressure heat exchange media 4, passes sequentially through the all parts of the channel 10 and leaves multicontour multifunctional spiral heat exchanger through the last outlet pipe for external connection of the low pressure heat exchange media 5. The high pressure heat exchange media enters the multicontour multifunctional spiral heat exchanger through the distribution collector 11 and inlet manifolds 8, and passes through the channels of one or several high pressure media 7, and leaves multicontour multifunctional spiral heat exchanger through the outlet manifolds of the heat exchange one or several high pressure media 9 and the outlet distribution collector 15. Wherein the three-ways valves or shut-off devices 12, 13 and shut-off valves 14 of the distribution collector 11 and the three-ways valves or shut-off devices 16,17 and shut-off valves 18 of the distribution collector of the one or several high pressure media 15 are in a position that covers only connecting jumpers between them. In this mode the heat exchange occurs in the all parts of the channel 10 generally for the low pressure heat exchange medium, and the heat exchange for the several high pressure media occurs independently in each part of the channel 10.

5. Depending on the numbers of the channels both for low and high pressure heat exchange media the other combined modes of multicontour multifunctional spiral heat exchanger operations can be used.