RU2267651C1 - Rotary supercharger - Google Patents

Abstract

FIELD: mechanical engineering; delivery and transportation of gaseous mixtures under pressure.

SUBSTANCE: proposed rotary supercharger has housing with cover, roller dividing the housing into hermetic isolated suction and discharge chambers with suction and discharge passages, drive mechanism made in form of endless two-sided toothed belt located in said passage for motion along it, thus forming gear-and-belt drive with pulleys. Supercharger is provided with second roller. Toothed rollers are mounted in slots of holder at spaced relation relative to each other. Passage is made between chambers. Endless two-sided toothed belt is located in clearance between toothed rollers for engagement with them. Pulleys are mounted in suction and discharge chambers.

EFFECT: enhanced reliability; increased productivity due to enhanced stability of compression and expansion of working medium.

3 cl, 3 dwg

Description

The invention relates to mechanical engineering and can find application in various industries and in transport for pumping and transporting a gaseous medium under pressure.

Known rotary supercharger comprising a housing with a cover, a roller dividing the body cavity into hermetically isolated and channel-connected suction and discharge chambers with suction and discharge channels, respectively, a drive mechanism made in the form of an endless double-sided toothed belt located in the specified channel with the possibility of moving along him and forming a toothed belt drive with pulleys (see GB 1540908 A, 12/09/1979, F 01 C 5/02).

The disadvantage of the design of the specified rotary supercharger is the low reliability and productivity due to the complexity of creating a tight insulation between the working chambers.

The objective of the invention is to increase the reliability and productivity by increasing the stability of the degree of compression (expansion) of the working fluid.

The problem is solved due to the fact that in a rotary supercharger containing a housing with a cover, a roller separating the housing cavity into hermetically isolated and channel-connected suction and discharge chambers with suction and discharge channels, respectively, a drive mechanism made in the form of an endless double-sided toothed belt, located in the specified channel with the possibility of movement along it and forming a gear-belt drive with pulleys, according to the invention, the supercharger is equipped with a second roller, pr This toothed rollers are mounted in the grooves and the cage with a gap between them, said channel is formed between the chambers, the endless double-sided toothed belt is situated in the gap between the toothed rollers to be engaged with them, and pulleys mounted in the suction and discharge chambers.

The channel can be made in the form of a tray with a cross-sectional profile of the belt along the tops of its teeth.

The channel can be formed by rollers installed with a gap between themselves.

Supplying the supercharger with a second roller, making the rollers serrated and installed in the grooves of the cage with a gap between each other, making a channel between the chambers, arranging the double-sided toothed belt in the gap between the gear rollers with the possibility of engagement with them and installing pulleys in the suction and discharge chambers makes it possible to transport the working fluid not only the hollows between the teeth of the rotors, but also along the channel - in the hollows between the teeth of the belt, which increases the performance during injection. The elasticity of the toothed belt of the drive mechanism creates the conditions for the tight isolation of the working chambers from each other, which stabilizes the degree of compression (expansion) of the working fluid and reduces noise during operation.

A rotary supercharger is illustrated by drawings, where Fig. 1 shows a general view without a cover - 1 embodiment of a channel; figure 2 - the same - 2 embodiment of the channel; figure 3 is a section along aa in figure 1.

The rotary supercharger consists of a housing 1 with a sealed cover 2. In the cavity of the housing 1 in the grooves of the cage 3 with a gap 4 there are toothed rollers 5 and 6, separating it into suction and discharge chambers 7. In the lid 2 above the chambers 7 and 8 are made suction channels 9 and discharge 10, respectively. A channel 11 is placed between the chambers 7 and 8. A double-sided toothed belt 12 is placed in the channel 11 and the gap 4, forming a gear-belt transmission with pulleys 13 and 14 installed in the chambers 7 and 8. An elastic insulator 15 is placed between the cage 3 and the channel 11. Channel 11 can be made in the form of a tray 16 with a cross-sectional profile of the belt along the tops of its teeth (Fig. 1), or formed by rollers 17 with a gap 18 between themselves.

Rotary supercharger operates as follows.

When the pulleys 13 and 14 rotate from a drive (not shown), the toothed belt 12 comes into motion and, translationally moving through the channel 11 and the yoke 3, rotates the rollers 5 and 6 in different directions. Through the suction channel 9, the working medium (air) enters the suction chamber 7 filling the cavities between the teeth of the rollers 5 and 6, and the belt 12. The belt 12 through the channel 11 and along the grooves of the holder 3 by the rollers 5 and 6, the working fluid moves into the discharge chamber 8, where the rollers 5 and 6, being engaged with the belt 12, are displaced and create excessive pressure. The working fluid from the discharge chamber 8 exits through the discharge channel 10 to perform work. The presence of an elastic insulator 15 prevents air from flowing from the discharge chamber 8 into the suction 7. The toothed belt 12 double-sided increases the volume of the working fluid passed through the channel and the gap between the rotors 5 and 6 , which increases the discharge performance.

The use of a rotary supercharger of the proposed design will allow compression (expansion) of a gaseous working agent with high performance in various-purpose injection devices — internal combustion engines, pumps, compressors, spray guns, etc., and the exclusion of friction elements during rotation increases its reliability and , reducing noise, increases operating comfort.

Claims (3)

1. A rotary supercharger comprising a housing with a lid, a roller dividing the housing cavity into a suction and discharge chambers with hermetically isolated and channel-connected suction and discharge chambers, respectively, a drive mechanism made in the form of an infinite bilateral gear belt located in the said channel with the possibility of movement along it and forming a toothed belt drive with pulleys, characterized in that the supercharger is equipped with a second roller, while the rollers are gear and installed in the grooves of the cage with a gap between each other, and the specified channel is made between the chambers, an endless double-sided toothed belt is located in the gap between the gear rollers with the possibility of engagement with them, and the pulleys are installed in the suction and discharge chambers. 2. The supercharger according to claim 1, characterized in that the channel is made in the form of a tray with a cross-sectional profile of the belt along the tops of its teeth. 3. The supercharger according to claim 1, characterized in that the channel is formed by rollers installed with a gap between each other.

Images