RU1836579C - External heat supply engine and its operation - Google Patents

Abstract

Usage: power engineering, in particular a closed-displacement volume displacement engine. SUMMARY OF THE INVENTION.-0 18 8: the engine comprises a cylinder 1 and a rotor 2 with plates 3 mounted eccentrically in the cylinder and forming cavities of variable objects in it. The engine is equipped with an integrated recuperative cooler 20 and a recuperative heat exchanger 18, the cylinder in the region of the minimum volume of cavities is made with fins 4 on the outer surface, the casing is made with additional nozzles for venting air 9 and 10 and the dampers 11 and 12 installed in them. The casing is insulated 7 in the region from minimum to maximum cavity objects with 4/4/7 15 25 & 9 18 00 00 about SL x | Che s g g yy Fig. G

Description

side of the combustion chamber 17, which is made of profiled ceramic elements 14-16. The heat is removed from the working fluid by two oppositely directed air streams, part of each stream being emitted into the atmosphere, the remaining parts of the streams are heated and sent to burn fuel. The heat from the combustion products is supplied in countercurrent mode with a maximum temperature in the initial stage of expansion. The use of two oppositely directed air flows for heat removal allows increasing heat removal from the working floor during compression and the final stage of expansion, which leads to an increase in engine efficiency. 2 s.p. f-ly, 2 ill.

The invention relates to power engineering, in particular to closed-cycle displacement engines, and can be used in stand-alone power plants as a vehicle engine.

The aim of the invention is to increase efficiency by increasing the removal of heat from the working fluid during compression and the final stage of expansion and connection to the working volumes of the tubes of the refrigerator.

Figure 1 shows a section of an engine with an external supply of heat; figure 2 presents diagrams of the external and internal cycles of the engine in 1-9 coordinates and a diagram of their thermal interaction.

The engine comprises a cylinder 1 with covers (not shown) in which a rotor 2 is eccentrically mounted with plates 3 that form cavities of variable objects in the cylinder. On the outer surface of cylinder 1, fin 4 (needle or other type) is made, and the cylinder is enclosed in a housing with an annular gap 5 and mounted on legs 6. The housing is thermally insulated 7 in the region from minimum to maximum cavity volumes from the side of the combustion chamber (250-180 ° cylinder coverage). The housing is equipped with a nozzle for supplying air 8 and additional nozzles for venting air 9 and .10 with shutters 11 and 12 installed in them, as well as a nozzle for venting products of combustion 13. Profiled ceramic elements 14-16 form a combustion chamber 17. The engine is equipped with a regenerative heat exchanger 18, a nozzle for supplying fuel 19 and an integrated recuperative cooler 20, Pipes 21 and 22 with valves 23 and 24 connected to the buffer cavity 25 are connected to the cylinder 1 in the region of the minimum and maximum volume of cavities PEGylated ceramic member 15 is formed with an aperture 26 for supplying fuel.

An engine with an external supply of heat operates as follows.

A supercharger (not shown) delivers air through the nozzle 8. The nozzle for supplying air 8 is located between the nozzles for venting air within the arc of the cylinder 35-110 ° from the beginning of compression). Air is supplied to the annular gap 5, where the built-in regenerative refrigerator 20 is installed, at

In this case, heat is removed from the working fluid by two oppositely directed flows: the first and second. The first air stream cools the working fluid through the built-in recuperative cooler 20, reaches the damper 11, which divides the stream into two parts. Part of the first air stream through an additional pipe for exhaust air 9 is discharged into the atmosphere, and the remaining part of the first stream is heated with exhaust combustion products in a recuperative heat exchanger 18 and then sent to burn fuel in a combustion chamber 17 made of profiled ceramic elements

14-16. The second air stream cools the working fluid through the built-in recuperative cooler 20. The recuperative cooler 20 is installed in the annular gap 5 between the region of the minimum volume of the cavities and the combustion chamber 17 (within the cylinder arc 160-300 ° from the end of the compression). Next, the second air stream reaches the damper 12, which divides the stream into two parts. Part of the second air stream is released into the atmosphere through an additional pipe to exhaust air 10, and the remaining part of the second stream is heated by the heat removed from the working fluid during expansion through the regenerative cooler 20, and then sent to burn fuel to the combustion chamber 17. Fuel is supplied by the nozzle 19 through an opening 26 in a profiled ceramic element 15. Products of combustion from

the combustion chambers 17 are directed into the fins 4 of the cylinder 1, which is made in the region of the minimum volume of the cavities (on

arc of the cylinder 10-110 °). The fins, together with the outer surface of the cylinder 1, are a heater for the working fluid. Then, the combustion products enter the recuperative heat exchanger 18, where they give off heat to the part of the first stream of air entering the combustion chamber 17. Finally, the combustion products through the pipe for exhaust products 13 are released into the atmosphere. When the rotor 2 rotates, the cavities of the variable objects enclosed between adjacent plates 3. by the cylinder 1 and the rotor 2 are cyclically changed. In the process of compression, heat is removed from the working fluid in a regenerative refrigerator 20. After completion of the compression process, heat is supplied to the working fluid in the fin area 4 during expansion. Further, in the process of expansion, the working fluid through the recuperative heat exchanger 20 gives up the heat of the remaining part of the second air stream, which is sent to burn fuel to the combustion chamber 17.

Claims (4)

The use of two oppositely directed air streams for heat removal allows increasing heat removal from the working fluid to the compression process and the final expansion stage, which leads to an increase in engine efficiency. Formula 1, A method for operating an engine with an external supply of heat by burning fuel in air, supplying heat of the combustion products to the working fluid of the engine during expansion and removal of heat from the working fluid of the engine to cooling air during compression, followed by supplying this air to burn fuel, characterized in that, in order to increase efficiency by increasing the heat removal from the working fluid during compression and the final stage of expansion and connection to the working volumes of the cold tubes of the dowel, heat removal is carried out by two oppositely directed air streams: the first, second and part of each air stream are emitted into the atmosphere, the remaining part of the first stream is heated by the exhaust products of combustion, the remaining part of the second air stream is heated by the heat removed from the working fluid during expansion, then the remaining parts of both air flows are directed for fuel combustion, and the heat is supplied from the combustion products to the working fluid using a countercurrent circuit with a maximum rate of eratura heating products of combustion and working fluid in the initial stage of expansion. 2. An engine with an external supply of heat, containing a cylinder, closed covers, a rotor with plates mounted eccentrically in the cylinder and forming cavities of variable volumes in it, and a housing enclosing the cylinder with an annular gap and provided with nozzles for air supply and exhaust of combustion products and a nozzle for supplying fuel for combustion, characterized in that, in order to increase the efficiency of the engine, the engine is equipped with a built-in regenerative cooler and a regenerative heat exchanger, the cylinder in the region of minimum cavity volumes is made with ribbing on the outer surface, the casing is made with additional nozzles for venting and installed flaps in them, and the first additional nozzle is installed in the field of minimum volumes of working bands s and illuminator configured to supply air into the recuperative heat exchanger, the outlet of the latter is connected by a bypass channel to the combustion chamber, the second additional pipe is installed in the region of the maximum volume of the cavities, and the pipe a supply of cooling air is located between the nozzles for venting air, the combustion chamber is located in the zone of minimum volumes of cavities, the nozzle is installed in the combustion chamber opposite a silver section of the cylinder, a recuperative heat exchanger is installed in the bypass channel connecting the annular gap to the combustion chamber, and is included by heated surfaces in the pipe for removal combustion products, a recuperative cooler is installed in the annular gap between the region of the minimum volume of the cavities and the combustion chamber, the casing is thermally insulated in the region from the minimum to maximum volumes of cavities from the side of the combustion chamber, 3. The engine according to claim 2, characterized in that the combustion chamber is made of profiled ceramic elements. 4. The engine according to claim 2, about l and ch and yushch and th so that. in order to improve the regulation of engine power, the engine is equipped with a buffer cavity, the latter connected through nozzles with valves to the cylinder in the field of minimum and maximum cavity volumes. Fig. 2. tesh supply - tell tap b - inner cycle AND 9