UA57671U - Rotary piston compressor - Google Patents

Abstract

A rotary piston compressor has an epitrochoid body with front and back side covers, rotor, eccentric shaft, working chambers with variable volume, lubrication system for working surfaces of the compressor, carter for placement of lubricant, device for oil sprinkling as ejector, system of channels, device for dozing supply of lubricant.

Description

volume, the lubrication system of the working surfaces is located outside the compressor, a container for the compressor, containing an oil tank for holding the lubricating fluid, a device for spraying lubricant, a device for spraying lubricant in the form of a liquid in the form of an ejector, the nozzle of which connects to the ejector, the nozzle of which connects a tube with a tube with the specified capacity, a system with the mentioned oil tank, and a system of channels, executive channels connecting the ejector with the working stones in the epitrochoid case and the eccentric frame, and a device for dosing the supply of liquid to the shaft, connecting ejector with working chamber - axial drilling of an eccentric shaft (A. S. we (A. Sb. USSR Mo315800, publ. 01.10.1971, USSR Me1231263, publ. 15.05.1986, bull. Me18, bull. Mo29). prototype).

The specifics of rotary-piston compressors In this compressor, the first is partially eliminated due to the lack of space for the solutions from the above-mentioned disadvantages, namely, the displacement of the effective end seals of the rotor entrance to the radial drilling of the eccentric and the difficulty of removing the lubricant from it , hired an installed dispenser in the form of a rotary, a simpler and more reliable way to prevent a valve with a drive supplied by a time relay, which allows you to regulate the amount of liquid supplied to the chambers, is the dosage of its supply. shaft during the expansion process.

Disadvantages of the well-known rotary-piston com- However, this dispenser complicates the construction of the pressor: it reduces the reliability of the compressor. 1. It does not have a dosage of the amount of supplied oil. In addition, it has the other litter listed above. benefits 2. Since the ejector is permanently connected to the ro- The basis of the useful model is the side chambers and the oil tank, through it, when creating a rotary-piston compressor, the flow of expansion processes is injected, and the sora, in which due to the change in the placement of the suction - excess, non-ejector and commutation channels of the lubrication system are sucked in, a controlled amount of lubricant, which due to the earlier as well as the introduction of new structural elements, noted specifics of the rotor-piston tives, provides an economical metered supply of compressors, is mostly discharged into the gas lubricants to the friction surfaces of the compressor. (air) rotary-piston compressors in The task is solved by the fact that into the atmosphere, worsening the ecology, increasing the rotary-piston compressor, which contains the epi-loss of lubricant from the system, leads to a stronger trochoidal body with front and rear lateral soot formation, especially in the injection pump with their caps and placed in the valve formed by them, impairing its operation. cavity with a rotor located on an eccentric 3. In addition, an oil tank is needed, which is a structural shaft, while the body, side covers are not actively included in the compressor, the rotor is located form working chambers of variable volume, outside it, as well as an ejector with a lubrication line. In the case of a lubrication system for the working surfaces of compression at low temperatures of the surrounding medium, which has a crankcase for holding the lubricant, the pimples, which under the operating conditions reach the nozzles for spraying the lubricant in the form of an ejector, minus 55 "С, the lubricant thickens so much that without the nozzle of which is connected by a tube to the bottom part of the forced heating in the oil tank by a third-party crankcase, a system of channels connecting each heat source ejector (and another type of pump) with the working chambers, and the device for dosing can suck it up from the oil tank and supply of lubricant, according to the model, the channel system is implemented in the form of 4. The ejector works only in the presence of a certain radial or inclined opening made in the pressure drop, while in operation it is in the housing in the expansion process zone, connected to can be (significantly) lower, for example, when a hole with a larger diameter is made through the chamber, which is necessary for sandblasting, painting, etc. works, child in the axial direction through the body, at which the ejector does not work. the flange of the rear side cover and the front flange. 5. The ejector is made of small pipes on the outside of the crankcase, and connected to the ejector, the diameter of which is of the order of 8..10 mm, and since it is inside the crankcase, and on the working surfaces they are located outside the compressor, radial channels are made easily on the side covers to prevent them from being damaged (broken) during transport - connection through the annular gap formed between the bath and the operation of the compressor. eccentric shaft and rear side cover 6. Installation of the ejector in front of the front kick, the crankcase cavity with working chambers in the center of the eccentric shaft excludes (or force- the period of the suction process, and the device for the bottom complicates) the possibility of installing on it the lubrication supply made in the form of a sub-impeller of the charging fan, a purpose-built valve and a split elastic wheel for cooling the compressor. this, mainly from anti-friction material, which

Also known is a rotary-piston compressor with a gap of a given (dosing) value in the place of waste, containing an epitrochoid body with a front cut, from which, a spring-loaded valve with installed and rear side covers and placed in front of the ejector in the mentioned chamber of a larger ov the cavity formed by the rotor, diameter, and a split elastic ring is installed in the located on the eccentric shaft, with an annular gap between the eccentric shaft and this body, side covers and the rotor form the rear side cover, and the elastic ring- working chambers of variable volume, the system is lubricated this annular gap is covered by this, and in its place, a gap of a specified (dosing) ter is formed on the working surfaces of the compressor, which has a car-cut, is not intended for placing lubricant of the size.

Above the spring-loaded valve, a buffer is placed, when the intake volume begins to open. window 10.

The split ring can be installed both in the discharge valve 11 installed in the discharge groove made in the opening of the rear discharge (discharge) well of the housing 1. In the cover and in the annular groove made in the rotor 5, radials 12 and end 13 bodies of the eccentric shaft. sealing strips that are pressed against the

In the crankcase, there is an additional double sided surface with expanders, which provide a means of sprinkling lubricant, which is made to seal the working chambers 8 and 9. in the form of leading and driven gears, which are connected to each other. , at the same time, the driving gear, implemented in the form of an inclined or radial shaft, is rigidly fixed on the eccentric shaft, hole 14, made in the working surface of the epitro- and the axis of the driven gear is immovably fixed in the gear case 1 in the zone of the expansion process and the tide of the lower part of the rear side cover with of the axial hole 15 connected to it, passing in such a way that a part of this gear is located through the epitrochoid case 1, the flange is pressed below the lower mark of the oil level. side cover C and the crankcase front flange

The execution of the compressor in accordance with the requirements, to which the ejector is coaxially connected, which provides the following useful model consists of a nozzle 16 and a tube 17 (Fig. 1, 3, 4), advantages: at the same time, to radial 14 or axial 15

In the compressor, a more accurate correlation of the amount of lubricant supplied to the friction parts is ensured through the holes in the epitrochoid housing or the working chambers of the cylinder are perpendicularly connected to them. During the flow of the process, the suction chamber 18 larger than the suction holes 14 and 15 is sucked in the necessary and counter-diameter, closed from the end at the axially arranged amount of lubricant. Therefore, its emission into the atmosphere is reduced to a minimum by the front side cover 2 of the chamber, reduces (Fig. 3), and in the case of a radial arrangement, soot formation is suppressed, the need for a mask 19 is eliminated (Fig. 4). A self-acting valve 20 in the form of a piston is inserted into the compressor in the cylindrical chamber 18, since the crankcase with lubricant is structurally thin. At low temperatures (Fig. 3, 4) or balls, not shown in the figures. Additional lubricant from the rear side cover of the compressor is connected to the environment, and the cylindrical chamber 18 is heated. buffer volume 21, and above the piston (ball)

Despite the fact that the ejector works only when spring 22 is installed; on the working surfaces of the presence of a certain pressure drop, and radial channels 23 are made in the operating covers 2 and C, it can be (much) lower, for example, with (Fig. 2) connecting through an annular gap between the execution of sandblasting, painting and eccentric shaft 4 and the rear side cover - other works, during which the ejector does not work, however, and with the cavity of the crankcase 6 with working chambers, while the lubrication system performs its functions 8 and 9 during the suction process. tion, as the lubricant is sprayed with an additional, Placement of the ejector inside the crankcase 6 by a duplicating system consisting of two near the rear side cover C improves the conditions of the rotating gears that are engaged at low temperatures, because the lower one is driven - constantly during operation of the compressor, cover C is heated, in the oil bath of the crankcase. heating the lubricant located near it,

Because the ejector is placed in the crankcase, reducing its viscosity, and the ejector inside the car is protected from damage. transportation and operation of the compressor. In the place of passage of the eccentric shaft 4

A useful model is explained by the drawings, in the opening of the rear side cover Z in it or in the ex

Fig. 1 - longitudinal section of the compressor, the installation is mainly made of anti-friction material

Fig. 2 - a cross-section of the compressor with the split elastic rings 24 (Fig. 5) or 25 removed from the front side cover (Fig. b6), which are pressed against the eccentric

Fig. 3 and Fig. 4 - elements of the lubrication system, shaft 4 (Fig. 5) or to the opening of the rear side cover

Fig. 5 and Fig. b6 - variants of the arrangement of the dosing device Z (Fig. b6) by the forces of its own elasticity and in the place of the rings. of the section have a gap of a given amount that dispenses

The rotary-piston compressor (further on, the compressor supplied for lubrication of the friction detasor) consists of an epitrochoid body 1, filling the working chambers of the gas-lubricant mixture. covered from the ends with the front 2 and the rear With side The compressor additionally contains inside the car covers, the eccentric shaft 4, the rotor 5 is rigidly fixed to the eccentric on the eccentric vacuum part of which is installed. To the shaft 4, the leading gear 26 and the driven gear, that the arm of the rear side cover Z, the attached crankcase is in constant engagement with it, 27 6, closed from the rear end by the crankcase cover 7. (Fig. 1), installed on the axis 28, which is immovably closed

The lower part of the crankcase is filled with grease plena in the tide of the lower part of the rear side (Fig. 1). There is no nozzle in the crankcase. covers Z in such a way that the lower part leads

The epitrochoid body 1, side covers 2, Z and the ring gear were constantly in grease, and the grease 5 forms the working chambers 8 and 9 of the variable depending on its level. The specified gear ratio. In Fig. 2, the rotor 5 is shown in two polarities: a solid line, when the volume of the lubricant spraying chamber 8. minimum (harmful), chamber 9 - maximum- The compressor works in this way. Eccentric (full), and with a dotted line in the intermediate shaft 4 is driven to rotate from the engine shaft. From the eccentric shaft, the rotation between the rear side cover Z and the eccentric one is transmitted to the rotor 5, which makes the planetary shaft 4, as well as the radial channels 23, a connection, rotating with the shaft and rotating, the working chambers 8 and 9 are restored during the period of flow in the carrier him When the rotor rotates, the working volume of the suction process, the gas-lubricant mixture of chambers 8 and 9 cyclically changes from the minimum to be sucked into them. For dosing, the amount is up to the maximum, due to which the gas-lubricant mixture given for lubrication is carried into the work process. In Fig. 1 and 2, solid lines in the ring gap installed in the rear side rotor 5 are shown in the initial position, when the injection process has ended in cover C (Fig. 3) or in the eccentric shaft 4 in the working chamber 8, (Fig. 6) elastic split rings 24 or 25, which have in the working chamber 9 the suction process ended - a gap of the specified (dosing) value. But inertial replenishment comes from the robot. In Fig. 2, during the process, the rotor 5 is connected to the nozzle 16 of the ejector by the puncture chambers 8 and 9 during the process, and the nozzle 16 of the ejector is shown in the middle, through which position, when the gas-lubricant mixture has run out in the working chamber 8, it can be sucked into ( or close to completion) the process of expanding the working chambers. In order to block its arrival, the radial bar 12 begins to open or limit the required amount for lubrication, the intake window 10, starting the process of suction of the working surface of the epitrochoid case 1, ny. In the working chamber 9, the process of compressing the installed piston (ball) 20 begins, which, under the action of pressure, when the injection pressure is reached, the vacuum in the working chambers 8 or 9 opens and the discharge valve 11 and the compressed gas springs 22 sit on their seats, completely or pushed out of it. After the arrival of the rotor 5 in the initial position, partially blocking the passage for suction, the working chambers 8 and 9 change the gas-lubricant mixture. Thus, it succeeds in places, then the cycle repeats itself. avoid increased consumption of lubricant, heat

Lubrication of the compressor is carried out with a stylish mixture. When passing through the radial, the ecology is improved. The absence of a breather and a sealing bar 12 of the radial hole contributes to this. Additional buffer volume 21 14 (Figs. 2, 3, 4) gas with increased pressure weakens the action of the pumping strokes and facilitates rapid pushing into it, squeezes the spring 22 and, as the movement of the piston (ball) 20 is shown in Fig. .3 and 4, the piston (ball) 20 is moved to the extreme left position (Fig. 3) or the extreme operating position of the compressor (Fig. 4). With high oil viscosity and gas flow into the axial hole 15, nozzle 16, the compressor operates at reduced modes, when the ejector and creating in its smaller area the gas pressure in the process of expansion is insufficient, the ejector cross-section of rarefaction, due to which the tube works cannot, the lubricant in the crankcase 6 17, the lubricant is sucked from the crankcase 6 and ejected - it will be sprayed by a nozzle 16 immersed in it, driven into the crankcase in the form of a finely splined gear 27, which is driven into rotation of the cast gas-lubricant mixture, which fills the car with conductive gear 26. ter. Since with the crankcase through the annular gap with y y in B E yiv y6 KI V. shen meh them not lu y ITI dv ANU ШY; zhy sho s SS LONSM MEN Zv Akti molasnyast "ZHY V Km V Mykh cor

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Ministry of Education and Science of Ukraine

State Department of Intellectual Property, str. Urytskogo, 45, Kyiv, MSP, 03680, Ukraine

SE "Ukrainian Institute of Industrial Property", str. Glazunova, 1, Kyiv - 42, 01601