JP2000073950A - Method and device for lubricating oil feeding type compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of seizure at the initial time of operation while feeding an appropriate quantity of the lubricating oil at need by generating the lubricating oil in the atomizing condition, granular condition or the mixed condition of the atomizing condition and the granular condition. SOLUTION: In a lubricating oil feeding device for reciprocating oil feeding compressor, the lubricating oil 18 of a lubricating oil vessel 17 is generated in the atomizing condition, granular condition or the mixed condition of the atomizing condition and the granular condition, and a vibrating mechanism including a vibrator 19 such as a diaphragm for feeding the lubricating oil to a sliding part is arranged, and the vibrator 19 is connected to a controller 20 for controlling the operation of a compressor. The vibrating mechanism for vibrating the lubricating oil 18 is arranged so that a part of the mechanism is arranged in the lubricating oil 18, and includes the vibrator 19 for ultrasonic vibration for example. Since the lubricating oil is fed to a sliding part, the lubricating oil is fed in the sliding part over a wide range, and the excellent lubrication and cooling are enabled so as to prevent the generation of seizure of the lubricating part due to a lack of the supply of the lubricating oil to the sliding part at the initial time of the operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for lubricating a lubricating compressor and, more particularly, to lubricating a lubricating oil to a sliding portion of the compressor by vibrating means provided in the lubricating oil of a lubricating oil tank. The present invention relates to a lubricating method and a lubricating method for supplying a required amount of lubricating oil to a sliding portion of a compressor when necessary.

[0002]

2. Description of the Related Art As a lubricating method for supplying lubricating oil to a sliding portion of an oil-supplying compressor, a reciprocating oil-supplying compressor employs an oil scraper mounted below a connecting rod to interlock with the operation of the compressor. A splash method in which the scraper blades enter the lubricating oil and lift the oil level to supply the oil, or a ring that is larger than the diameter of the crankshaft is attached to the crankshaft, and the lower part of the ring that rotates in conjunction with the operation of the compressor is the lubricating oil. In general, a ring system for supplying lubricating oil is used.

However, in the method of supplying lubricating oil to these sliding parts, the amount of lubricating oil supplied is determined in conjunction with the number of revolutions during operation of the compressor. In the case of the specification, the higher the horsepower specification, the higher the rotation speed of the compressor body, and the higher the rotation speed, the more lubricant oil is supplied to the sliding part during the operation of the compressor. The supply amount of lubricating oil in an unsuitable state cannot be adjusted to an appropriate amount. Further, the amount of lubricating oil to be lifted varies depending on whether the amount of lubricating oil in the lubricating oil tank enters the lubricating oil of the oil scraper blades or the ring depending on whether the lubricating oil is near the upper limit level or the lower limit level. That is, when the level of the lubricating oil is high, the amount of the oil scraping blade or ring entering the lubricating oil and scraping the lubricating oil increases, and conversely, when the level of the lubricating oil is low, the oil scraping blade or the ring The amount of the lubricating oil entering the lubricating oil is reduced and the amount of the lubricating oil scraped is reduced, so that a certain amount of the lubricating oil cannot be supplied to the sliding portion. In addition, the lubricating blades or rings enter the lubricating oil only during operation, and lubricate the lubricating oil. Therefore, even if it is necessary to supply lubricating oil to the sliding parts before the operation of the compressor, supply it. Can not do. That is, in the splash method or the ring method using the oil scraper blade, since the supply amount and supply time of the lubricating oil cannot be adjusted at all, the supply amount of the lubricating oil generally becomes excessive, and as a result, the oil consumption increases. In some cases, initial seizure of sliding parts may occur due to running out of lubricating oil or insufficient lubricating oil supply during startup after a long-term stop.

[0004]

In the case of a long-term compressor or a compressor which has been out of use for a long period of time, the lubricating oil adhering to the sliding portion may fall off, causing initial seizure due to poor lubrication at startup. Was. Also, in the case of the splash type or ring type, in the case of a model with a high rotational speed of the compressor, the lubricating oil is supplied to the sliding part more than necessary, especially, due to the excessive lubricating oil supplied between the piston and piston ring. In some cases, the ability of the piston ring to lower the lubricating oil cannot keep up with the oil consumption, resulting in an increase in oil consumption.

Accordingly, the present invention provides an appropriate amount of lubricating oil only when it is necessary to supply lubricating oil, thereby suppressing wasteful oil consumption and preventing seizure in the early stage of operation. An object of the present invention is to provide a lubricating compressor lubricating method and apparatus therefor.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a lubricating compressor operated by supplying lubricating oil to a sliding portion of the compressor.
Vibration means for generating a granulated state or a state in which the atomized state and the granulated state are mixed is disposed so that at least a part thereof enters the lubricating oil. The lubrication method of supplying the moving parts is adopted. The vibration means for vibrating the lubricating oil is configured to include a vibrating body such as a diaphragm, and the adjustment of the supply amount of the lubricating oil to the sliding portion is performed by increasing or decreasing the number of vibrations of the vibrating body for vibrating the lubricating oil. The lubricating oil is supplied to the sliding portion in a continuous operation time, an intermittent operation time, or a combination of the continuous operation time and the intermittent operation time of the vibrating body that vibrates the lubricating oil.

The lubricating oil supply time is determined by the continuous operation time of the diaphragm for vibrating the lubricating oil, the intermittent operation time, or a combination of the continuous operation time and the intermittent operation time.
The supply of the lubricating oil includes before the start or before the restart of the compressor, and before the start and before the restart. Further, the operating time of the vibration means for vibrating the lubricating oil is set to include before the compressor is started or before the restart, and before the start and before the restart. Also,
The adjustment of the lubricating oil supply amount and the lubricating oil supply time is performed by a controller that controls the operation of the compressor.

Further, in a lubricating compressor operated by supplying lubricating oil to a sliding portion of the compressor, the lubricating oil is vibrated so that the lubricating oil is atomized, granulated, or atomized. And a vibration means for supplying the lubricating oil to a sliding portion of the compressor so that at least a part of the vibrating means enters the lubricating oil. A controller that controls the operation is communicated with the controller, and the controller adjusts the operation time and the number of operations of the vibration unit.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is not a lubrication system in which lubricating oil is supplied to a sliding portion only during operation of a compressor as seen in a splash system or a ring system using oil scraping blades, but at a necessary time. It is possible to supply the required amount of lubricating oil, and at least a part of the lubricating oil is atomized by vibrating means including a vibrating body such as a diaphragm arranged in the lubricating oil. An object of the present invention is to provide a method and an apparatus for supplying a lubricating oil to a sliding portion by generating the atomized state or a state in which the atomized state and the granulated state are mixed.

An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing the entire configuration of a lubricating oil supply device for a reciprocating oil-supplying compressor embodying the present invention, and FIG. It is. The present invention includes elements whose design can be variously changed without departing from the scope of the claims.

In FIG. 1, a crankshaft 1 includes a bearing 2,
2 and rotatably attached to the crank chamber 3 through the same. One end of the crankshaft 1 protruding left and right from the crank chamber 3 has a cooling fan 4 for cooling the refueling reciprocating compressor main body A, and the other has the crankshaft 1 rotated via a belt from a drive source. Body pulleys 5 are attached respectively. Here, a diagram of the belt drive is described, but the present invention is not limited to the belt drive, but may be achieved by a direct drive that is directly driven by a motor, an engine, or the like. The piston 6 is fitted in a cylinder 7 and a piston ring 8 is provided on the outer periphery. The valve spacer 9 including the suction valve and the discharge valve is mounted between the cylinder 7 and the cylinder cover 10, and the pressure in the air tank is introduced into the suction chamber 11 of the cylinder cover 10 via an unloader valve (not shown). Then, the suction valve of the valve spacer 9 is opened, and the suction unloader device 12 that sets the operation state of the compressor to no-load operation is drawn into the suction chamber 11 after the outside air is removed by a filter and sucked. Further, a suction port 13 for reducing the operation noise of the suction valve and the like of the valve spacer 9 is provided. The discharge chamber 14 of the cylinder cover 10 is connected to an air tank via a connection pipe (not shown).

The piston 6 and the crankshaft 1 are connected by a connecting rod 15. The small end 15A of the connecting rod is connected to the piston 6 via a piston pin 16, and the large end 14B of the connecting rod is connected to the crank pin 1A. And each is attached to the crankshaft 1.

A lubricating oil tank 17 is provided below the crank chamber 3, and the upper surface of the lubricating oil 18 is stored at a position where it does not contact the lower end of the large end 15B of the connecting rod during operation of the compressor. In addition, no oil scraping blade that enters the lubricating oil 18 and scrapes the lubricating oil is attached to the lower end of the large end 15B of the connecting rod. The lubricating oil tank 17 may be provided outside the crankcase 3 by being configured to communicate with the inside of the crankcase 3 via the communication passage.

The sliding portions of the refueling reciprocating compressor main body A include the bearing 2, the connecting rod large end 13B and the crank pin 1A, the connecting rod small end 13A and the piston pin 14, the piston 6, and the boss of the piston 6. Piston pin 14, piston ring 8,
The cylinder 7 and the like are included.

In the lubricating oil 18 of the lubricating oil tank 17, a vibration means for vibrating the lubricating oil 18, that is, lubricating oil generated in an atomized state, a granulated state, or a mixed state of the atomized state and the granulated state is slid. Vibration means including a vibrating body 19 such as a vibrating plate to be supplied to the part is provided, and the vibrating body 19 communicates with a controller 20 for controlling the operation of the compressor. The vibrating means for vibrating the lubricating oil 18 is such that at least a part thereof is disposed in the lubricating oil 18. By vibrating the lubricating oil 18 by the vibrating means, the lubricating oil 18 is atomized and granulated. Any structure may be used as long as it is generated in a state or a mixed state of an atomized state and a granulated state, and includes a vibrating body 19 that performs ultrasonic vibration as an example. Method of vibrating iron plate etc. in lubricating oil by motor drive, method of arranging fan in oil and vibrating lubricating oil by rotation of fan in lubricating oil, introducing lubricating oil by introducing compressed air into oil Vibration method and the like are included.

The amount of the lubricating oil 18 supplied to the sliding portion is adjusted by increasing or decreasing the number of vibrations of the vibrating body 19 according to a signal from the controller 20. The supply time of the lubricating oil 18 to the sliding portion is determined based on a signal from the controller 20 as a continuous operation time of the vibrating body 19, an intermittent operation time, or a combination of the continuous operation time and the intermittent operation time.

As shown in FIG. 2, the operating time of the vibration means is
Not only the operation time of the compressor but also a signal from the controller 20 can be performed before starting and / or before restarting the compressor. Lubricating oil can also be supplied before the compressor is started or / and before the compressor is restarted.

In order to generate the lubricating oil 18 in the lubricating oil tank 17 in an atomized state, a granulated state, or a mixed state of the atomized state and the granulated state, a vibrating means for supplying to a sliding portion of the compressor is provided. Vibrating body 19 including the vibrating plate of
Vibrating body 19 and controller 20 for controlling operation of compressor
And the controller 20 adjusts the operation time and the number of operations of the vibration body 19. Therefore, as shown in FIG. 2, the supply amount of the lubricating oil is large according to the operation state of the compressor, that is, before the operation of the compressor, is small during the compression operation after the start of the operation, and further, the operation of the compressor body During the no-load operation in which the suction valve of the valve spacer 9 is pushed from the seat by the air tank pressure introduced into the suction unloader device 12 disposed in the suction chamber of the cylinder cover, the air tank pressure from the unloader valve is applied to the controller by the air pressure. By inputting as a signal, the number of operations of the vibrating body 19 can be reduced, and by further reducing the supply amount of the lubricating oil 18, oil consumption during no-load operation can be reduced. By releasing the pneumatic signal from the unloader valve to the controller, the amount returned during compression operation is restored, so that optimal lubrication is always maintained for the operating state of the compressor Rukoto can.

[0019]

As a method of supplying the lubricating oil to the sliding portion of the oil-supplying compressor, the lubricating oil is vibrated so that the lubricating oil is atomized, granulated or mixed between the atomized state and the granulated state. A vibrating means for generating at least a part of the lubricating oil is provided in the lubricating oil, and the lubricating oil is supplied to the sliding part of the compressor by the vibrating means. Is supplied in an atomized state, a granulated state, or a state in which the atomized state and the granulated state are mixed, so that a wide range of lubricating oil can be supplied to the sliding portion, and good lubricating cooling can be achieved. Further, even if the lubricating oil tank is arranged outside the crankcase, the lubricating oil can be transported to the sliding portion in an atomized state, a granulated state, or a mixed state of the atomized state and the granulated state.

Further, by communicating the vibration means with the control for controlling the operation of the compressor, it becomes possible to supply the lubricating oil to the sliding portion before the start and before the start of the operation. Burning of the sliding part due to insufficient lubricating oil supply to the part can be prevented. Further, since a required amount of lubricating oil can be supplied at a required time according to the operating state of the compressor, it is possible to prevent an increase in oil consumption due to an excessive supply of the lubricating oil particularly during no-load (unloader) operation. It is possible to supply the lubricating oil to the sliding portion in an appropriate amount at all times.

Further, since the oil storage level of the lubricating oil can be suppressed lower than that of the conventional splash type or ring type, there is an advantage that the height of the crank chamber can be reduced.

[0022]

[Brief description of the drawings]

FIG. 1 is a sectional view of a refueling type reciprocating compressor in which a vibration means of the present invention is disposed in lubricating oil in a lubricating oil tank.

FIG. 2 is an explanatory diagram showing a relationship between an operating state of a compressor of the present invention and an operating state of a vibration unit.

[Explanation of symbols]

 17 lubricating oil tank 19 vibrator 20 controller

Claims (9)

[Claims] In an oil supply type compressor operated by supplying lubricating oil to a sliding portion of the compressor, the lubricating oil is vibrated to atomize, granulate, or mix the atomized state and the granulated state. Lubricating compression, characterized in that a vibrating means for generating the compressed state is arranged so that at least a part thereof enters the lubricating oil, and the vibrating means supplies the lubricating oil to a sliding portion of the compressor. Machine lubrication method. 2. The lubricating method for an oil-filled compressor according to claim 1, wherein the vibration means for vibrating the lubricating oil includes a vibrating body such as a vibration plate. 3. The adjustment of the supply amount of the lubricating oil to the sliding portion is performed as follows.
2. The lubrication method for an oil-filled compressor according to claim 1, wherein the method is performed by increasing or decreasing the number of vibrations of a vibrating body that vibrates the lubricating oil. 4. The adjustment of the supply time of the lubricating oil to the sliding portion is performed by a continuous operation time, an intermittent operation time, or a combination of the continuous operation time and the intermittent operation time of the vibrating body for vibrating the lubricating oil. 2. The lubricating method for an oil-filled compressor according to claim 1, wherein 5. The lubricating method according to claim 1, wherein the supply of the lubricating oil to the sliding portion includes before starting and / or before restarting the compressor. 6. The lubrication method for an oil-filled compressor according to claim 1, wherein the operating time of the vibration means for vibrating the lubricating oil includes before starting and / or before restarting the compressor. 7. The method according to claim 1, wherein the setting of the supply amount of the lubricating oil and the supply time of the lubricating oil are performed by a controller that controls the operation of the compressor. 8. A lubricating compressor operated by supplying lubricating oil to a sliding portion of the compressor, wherein the lubricating oil is vibrated so that the lubricating oil is atomized, atomized, or atomized. And a vibration means for supplying the lubricating oil to a sliding portion of the compressor so as to at least partially enter the lubricating oil. A lubricating device for a refueling compressor, wherein the lubricating device is configured to communicate with a controller that controls the operation of the lubricating means, and to adjust the operating time and the number of times of operation of the vibration means by the controller. 9. A lubricating compressor operated by supplying lubricating oil to a sliding portion of the compressor, wherein at least at the time of no-load operation of the compressor, load operation is performed by a controller that controls the operation of the compressor. A lubricating device for an oil-filled compressor, characterized in that the supply of lubricating oil to sliding parts is reduced from time to time.