The invention relates to heat exchange engineering and can be used for heating or cooling of liquid and gaseous media.

Already known spiral heat exchanger the construction of which involves planning of at least one unit of a spiral heat transfer tube knot, in which assembles a folded heat transfer tube having a compound longitudinal section of the pipe wall, wrapped in the form of a spiral, the plate is located between the links of the spiral heat transfer tube, which are separated from each other, or a plate with a wound flat lid is usually used for each knot of the spiral heat transfer tube and is concentrically inserted between the adjacent ladder heat transfer tubes by a multi-stage spiral heat transfer, and the multi-stage hosing 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 by each of the spiral tubes of the heat exchangers are located sequentially in the container and the inner part of the container is used as first flow system and the inner part of each of the spiral heat exchange tube blocks is used as another flow system, respectively, so that it is possible to carry out heat exchange through backflow in the case of a crossover flow or an inexpensive flow between two fluid media. (Patent JPS5188865 (U), publ.1976-07-16).

The closest to the proposed is a spiral heat exchanger, in the construction of which the spiral path (7) is made between the spiral partitions (3) comprising a deferent; 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 road (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 of the spiral tubes (4), is equivalent to the width of the passage path (PP) of the spiral path (7) , through which the first fluid flows from the outside of the spiral tubes (4) in a direction perpendicular to the central direction of the spiral of the spiral tubes (4). (Patent WO2015020047 (A1), publ. 2015-02-12).

The technical aim of the invention is to simplify the design and reduce the size of already known spiral heat exchangers, due to constructive changes.

This task is achieved due to a new construction of the spiral heat exchanger comprising a housing in which there is a channel for passage the first heat exchange medium with a branch pipe for inlet of the first heat exchange medium and a branch pipe for outlet of the first heat exchange medium, while a channel for passage the second heat exchange medium serves as a bundle of spiral tubes twisted in the direction from the side walls of the housing to the center, and the ends of each of the spiral tubes of the channel of the second heat exchange medium, are connected to the collector for the inlet of the second heat exchange medium and the collector for the outlet of the second heat exchange medium, is characterized by that the spiral tubes of the channel of the second heat exchange medium are located in one vertical area and are tightly adjacent to each other, and the outer ones adhere tightly and fasten to the walls of the housing, while the channel for passage of the first heat exchange medium is the free space formed between the turns of the spiral tubes of the channel of the second heat exchange medium, and the function of the spiral separating wall of the channel, for passage of the first heat exchange medium, performs a series of tightly adjacent spiral tubes of the channel of the second heat exchange medium. Brief description of the figures

Fig. 1 - shows spiral heat exchanger in a cutaway A - A

Fig. 2 - shows spiral heat exchanger in a cutaway B - B

where: 1 - channel of the first heat exchange medium; 2 - channel of the second heat exchange medium; 3 - housing of the spiral heat exchanger; 4 - a branch pipe for inlet of the first heat exchange medium; 5 - a branch pipe for the outlet of first heat exchange medium; 6 - collector for the inlet of the second heat exchange medium; 7 - collector for the outlet of the second heat exchange medium.

The technical aim of the invention is to simplify the design and reduce the size of already known spiral heat exchangers, due to constructive changes.

This task is achieved due to a new construction of the spiral heat exchanger comprising a housing 3 in which there is a channel for passage the first heat exchange medium 1 with a branch pipe for inlet of the first heat exchange medium 4 and a branch pipe for outlet of the first heat exchange medium 5, while a channel for passage the second heat exchange medium 2 serves as a bundle of spiral tubes twisted in the direction from the side walls of the housing 3 to the center, and the ends of each of the spiral tubes of the channel of the second heat exchange medium 2, are connected to the collector for the inlet of the second heat exchange medium 6 and the collector for the outlet of the second heat exchange medium 7, is characterized by that the spiral tubes of the channel of the second heat exchange medium 2 are located in one vertical area and are tightly adjacent to each other, and the outer ones adhere tightly and fasten to the walls of the housing 3, while the channel for passage of the first heat exchange medium 1 is the free space formed between the turns of the spiral tubes of the channel of the second heat exchange medium 2, and the function of the spiral separating wall of the channel, for passage of the first heat exchange medium 1 , performs a series of tightly adjacent spiral tubes of the channel of the second heat exchange medium 2.

The heat exchanger works as follows:

Along the branch pipe of the inlet for the first heat exchange medium 4 to the spiral heat exchanger the first heat exchange medium enters, which passes through the channel of the first heat exchange medium 1 and exits the spiral heat exchanger through the outlet of the first heat exchange medium 5. Through the collector for the passage of the second heat exchange medium 6 into spiral heat exchanger 6, second exchange medium enters the spiral heat exchanger, passing through the channel of the second heat exchange medium 2 and exits the spiral heat exchanger through the collector for the exit of the second heat exchange medium 7. During the passage of heat exchange media over the spiral heat exchanger, through the walls of the spiral tubes of the channel of the second heat exchange medium 2, a heat exchange process takes place between the first and second heat exchange media.