KR0165655B1 - Compressor system - Google Patents

Abstract

A compressor system whose structure is improved to be advantageous in miniaturization is disclosed. This system is installed in the tank head 50, the compressor body 30, the oil filter 80, the oil separator 90, the temperature controller 100 and the like. This enables a compact compressor system and minimizes pressure loss and vibration by minimizing compressed air and oil lines.

Description

Compressor system

1 is a schematic view showing a conventional compressor system.

2 is an exploded perspective view showing a compressor system according to the present invention.

3 is a schematic diagram for explaining a compressor system according to the present invention.

4 is a cross-sectional view of the tank head.

5 is a front view of the tank head.

6 is a rear view of the tank head.

7 is a plan view of a compressor system.

8 is a perspective view of the tank head.

9 is a perspective view of another embodiment of a tank head employed in the system of the present invention.

FIG. 10 is a sectional view of another embodiment of the tank head shown in FIG.

11 is a cross-sectional view showing that the compressor main body and the tank head shown in FIG. 2 are integrally formed by casting.

* Explanation of symbols for main parts of the drawings

30 compressor body 36 discharge tube

40: drive motor 41: belt

50 tank head 60 reservoir

80: oil filter 90: oil separator

100: temperature controller 110: air cooler

120: oil cooler

The present invention relates to a compressor system, and more particularly, to a compressor system whose structure is simplified to reduce noise and vibration and to be advantageous in miniaturization.

Compressors for discharging high-pressure compressed air include screw, rotary, scroll and piston compressors. In particular, the screw compressor is provided with a pair of male and female rotors installed to be engaged with each other in parallel two axis, so that the compressed air is discharged to the working space formed when they are rotated with each other. In general, the female and female rotors are supplied with cooled oil in the female and female rotors in consideration of expansion and abrasion due to mutual friction.

1 schematically shows the above described screw compressor system. Reference numeral 27 denotes a housing for receiving the components of the compressor system to be described below, wherein one side is provided with a grill-type air passage 28. Reference numeral 3 denotes a compressor body in which a pair of screws 3a for compressing the air sucked through the air cleaner 4 are installed.

The screw 3a is rotationally driven by the drive motor 1, and the compressed air is supplied to the accumulator 5 through the discharge line 3b. Usually, the accumulator 5 is manufactured by welding a casting or a plurality of metal plates. In addition, the screw 3a is supplied with cooled oil through the first oil supply line 21 to prevent expansion and abrasion due to friction while being engaged with the screw 3a. Therefore, the compressed air discharged through the discharge line 3b is supplied to the accumulator 5 together with the oil, and the oil 6a is stored in the accumulator 6a.

On the other hand, the accumulator 5 has an oil separator 7 for separating the oil 6a contained in the compressed air. The compressed air passing through the oil separator 7 is supplied to the air cooler 10 through the air line 11, and finally compressed air is discharged through the service line 12. Here, reference numeral 8 is a pressure valve actuated by the pressure switch 17, and is opened when the pressure in the accumulator 5 is equal to or higher than the set pressure set by the pressure switch 17.

Some of the oil scattered with the compressed air in the accumulator 5 is free-falled and stored in the accumulator 5 and the remaining oil is attached to the oil separator 7. The oil attached to the oil separator 7 is lubricated to a bearing (not shown) installed at the center of the screw 3a through the auxiliary oil supply line 25.

The accumulator 5 is connected to a first oil supply line 23 through which oil 6a is discharged, and the oil 6a discharged through the first oil supply line 23 is a temperature controller 15. By selectively passing through the first oil supply line 21 and the second oil supply line 24.

That is, during the initial operation of the compressor, when the oil 6a is low temperature, the oil 6a is transferred through the first oil supply line 21 to be supplied to the screw 3a. It is supplied to the oil cooler 20 through the oil feed line 24. The oil supplied to the oil cooler 20 is cooled to be supplied to the temperature controller 15 through the second oil supply line 22, and by the operation of the temperature controller 15, the oil passes through the oil filter 16. It is conveyed along the first oil supply line 21.

However, the conventional compressor system as described above has the following problems.

First, the compressor main body 3, the temperature controller 15 and the oil filter 16 have a structure connected to the accumulator 5 by the discharge line 3b and the first oil supply line 23, respectively. This makes the whole system larger. Accordingly, there is a problem that the pipe loss is increased and disadvantageous as well as the amount of oil required increases.

Second, the accumulator 5 is usually produced by welding a casting or a plurality of metal plates to reduce productivity.

Third, the inner and outer parts of the housing 27 directly pass through the air passages 28, so that the noises caused by the air suction and the noises caused by the compressor operation are greatly emitted.

Fourth, the outlet of the discharge line (3b) is installed in a position close to the inlet of the oil separator (7) so that the oil in the compressed air scattered by the accumulator (5) before the free fall falls with the oil separator ( Pass 7). This not only lowers the oil separation efficiency of the oil separator 7 but also shortens its lifespan.

The present invention has been made to solve the above problems, and an object thereof is to provide a compact compressor system with a simple structure.

Another object of the present invention is to provide a compressor system capable of minimizing the emission of noise caused by compressor operation and noise caused by inflow air introduced into the system while the system is operating.

Still another object of the present invention is to provide a compressor system that is advantageous for an automated process by simplifying the manufacture of the accumulator.

Another object of the present invention is to provide a compressor system whose structure is improved to extend the life of the oil separator.

The present invention to achieve the above object is a housing having an air passage is formed, a compressor main body accommodated in the housing to suck the air to discharge compressed air, accommodating the compressed air and oil contained in the housing and discharged from the compressor main body An accumulator, an air cooler and an oil cooler for cooling compressed air and oil discharged from the accumulator, an oil filter for filtering oil discharged from the accumulator, and a compression discharged from the accumulator In a compressor system including an oil separator for separating oil into the air, the accumulator includes a reservoir for storing compressed air and oil discharged from the compressor main body, a reservoir for storing compressed air and oil discharged from the compressor main body, and the compressor main body being predetermined. Having a tank head coupled by a coupling means The features.

The tank head is formed with a first coupling hole in which the compressor body is coupled to one side thereof, and a second coupling hole in which the reservoir is coupled to the other side thereof, and a hollow portion through which the first and second coupling holes connect to each other. It has a structure.

In addition, the tank head has a structure in which a first coupling hole to which the compressor body is coupled and a second coupling hole to which the storage tank is coupled are formed on one side thereof, and a hollow portion through which the first and second coupling holes are connected to each other is formed. Can be.

The reservoir is formed by pressing a metal plate, and the oil filter and the oil separator are fixedly installed on an upper surface of the tank head.

The passage may include a through hole formed in one surface of the housing, a blocking member maintained at a predetermined distance from one surface of the housing in which the through hole is formed, and supporting the blocking member in the housing and flowing between the housing and the blocking member. It has a structure provided with a guide member for guiding air in a direction opposite to the inflow direction of air.

According to the above characteristics of the present invention, the compressor system according to the present invention is advantageous in miniaturizing the system by having a structure in which a plurality of components such as a compressor main body, an oil filter, a temperature separator, etc. are installed together in the tank head. In addition, it is possible to improve the compressor efficiency by reducing the pipe loss accordingly.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view schematically showing the compressor system according to the present invention, and FIG. 3 is a schematic diagram for explaining the system. In FIG. 3, reference numeral 80 is an oil filter, which is actually fixed to the tank head 50 as shown in FIG.

Reference numeral 30 denotes a rotor body 31 and a discharge casing 32 as a compressor body. In the rotor casing 31, a conventional water rotor and an arm rotor (not shown), which are engaged with each other around the two parallel shafts 31a and 31b and rotate to form an operating space, are accommodated, and an air intake chamber is sucked in. Is formed. The discharge casing 32 is coupled to the rotor casing 31 and has a discharge chamber through which air is discharged.

The water rotor is connected to the drive motor 40 and the belt 41 to be driven.

The rotor casing 31 is provided with an air cleaner 35 for filtering foreign substances in the air sucked into the suction chamber.

The accumulator 70 connected to the compressor main body 30 has a reservoir 60 for receiving compressed air and oil discharged from the discharge chamber, and is coupled with the reservoir 60 and the compressor main body 30 is connected to the compressor main body 30. The tank head 50 is coupled by a predetermined coupling means. The reservoir 60 is formed by pressing a single metal plate and the inlet edge is formed with a flange portion 61 formed with a coupling hole at a predetermined interval. 6 and 8, a flange portion 51 coupled to a flange portion 61 of the reservoir 60 and a fastening member such as a bolt is formed on one surface of the tank head 50. It is.

The tank head 50 is formed in the first coupling hole 57 is coupled to the compressor main body 30 on one side thereof, as shown in FIG. 2, 4 to 6 and 8 And a second coupling hole 58 to which the reservoir 60 is coupled to the other side thereof, and a hollow portion 59 through which the first and second coupling holes are connected to each other is formed.

Meanwhile, as shown in FIG. 9, the tank head 50 has a first coupling hole 57 to which the compressor main body 30 is coupled to one side, and a second coupling hole to which the reservoir 60 is coupled. 58 is formed, and the first and second coupling holes 57 and 58 are connected to each other to have a hollow portion 59 formed therein.

Here, the tank head 50, as shown in Figure 9, the first and second coupling holes 57, 58 may be formed together on the same surface. Therefore, the compressor main body 30 and the reservoir 60 are installed together on the same side of the tank head 50.

The reservoir 60 is horizontally coupled to the tank head 50 having the structure as shown in FIGS. 2 and 9, respectively.

The coupling means is fixed to the edge of the first coupling hole 57 formed in the tank head 50 and formed between the plate 56 and the rotor casing 31 and the discharge casing 32 having a screw hole at a predetermined interval. Flange 33 is screwed with the plate 56 has a structure formed. The above coupling means is also applicable here to a tank head having a structure as shown in FIG.

An air cooler 110 and an oil cooler 120 for cooling compressed air and oil discharged from the accumulator 70 are respectively provided on the accumulator 70.

The tank head 50 filters the oil separator 90 separating the oil in the compressed air in the reservoir 60, the oil discharged from the reservoir 60, and the oil passing through the oil cooler 120. An oil filter 80 and a temperature controller 100 for controlling the direction of oil to be selectively transferred to the oil filter 80 and the oil cooler 120 are installed according to the oil temperature discharged from the storage tank 60.

A pressure valve 91 is installed inside the oil separator 90 and is operated to open the spring 92 while pressing the spring 92 when the compressed air in the reservoir 60 is greater than or equal to the set pressure.

2 to 6, the coupling heads 53 and 54 to which the oil filter 80, the oil separator 90, and the temperature controller 100 are installed are disposed in the tank head 50. 55 is formed, and the drain 52 for discharging the foreign matter in the said storage tank 60 is formed.

And the side of the tank head 50 is further provided with oil amount display means for displaying the amount of oil accommodated in the reservoir (60). The oil amount display means has a structure in which a transparent tube 130 connecting upper and lower portions of the tank head 50 is installed as shown in FIG.

Meanwhile, a cooling means for cooling the air cooler 110 and the oil cooler 120 is further provided. The cooling means includes a blowing fan 140 that is rotated by the power of the driving motor 40, and the blowing air. It has a structure provided with a duct 130 for guiding the wind generated from the fan 140.

2 and 4, the discharge casing 32 has a discharge pipe 36 for guiding compressed air and oil discharged therein, and the discharge pipe 36 has a structure bent upwardly. Have On the other hand, the outlet of the discharge pipe 36 is located a predetermined distance from the inlet of the reservoir 60 as shown in FIG. Therefore, the outlet of the discharge pipe 36 and the oil separator 90 installed in the tank head 50 is spaced a predetermined interval.

Referring to FIG. 7, the compressor main body 30, the driving motor 40, the air cleaner 35, the accumulator 70, the oil filter 80, the oil separator 90, and the air cooler 110 are shown. The oil cooler 120 and the oil temperature controller 100 are installed in the housing 200 in which a passage 201 through which external air is introduced is formed.

The passage 201 is a through hole 230 formed on one surface of the housing 200, a blocking member 210 is maintained at a predetermined distance from one surface formed with the through hole 230, and the blocking member The support member 210 is supported by the housing 200 and has a structure formed of a guide member 220 for guiding air in a direction opposite to an inflow direction of air introduced between the housing 200 and the blocking member 210.

On the other hand, in the tank head 50 as shown in FIG. 9, therein is a partition intersecting between the discharge pipe 36 and the inlet 90a of the oil separator 90 as shown in FIG. It is preferable to provide the member 50a. As such, when the partition member 50a is installed, the compressed air discharged from the discharge pipe 36 and the scattered oil reach the oil separator 90 via the arrow shown. The oil splashed in this way is dropped in the reservoir 60 while the remaining oil is attached to the oil separator 90.

The compressor system according to the present invention configured as described above has the following operational effects.

When the female and male rotors installed on the parallel two-axis cores 31a and 31b are rotated by the drive motor 40, the air introduced through the air cleaner 35 is compressed and discharged into the storage tank 60, and the blower fan ( The heat of the air cooler 110 and the oil cooler 120 by the rotation of 140. At this time, the inside of the rotor casing 31 is supplied with oil through the main oil supply line 104 and the auxiliary oil supply line 95 to prevent thermal expansion and wear caused by the rotation of the female and male rotor.

Therefore, the oil is scattered in the reservoir 60 together with the compressed air discharged through the discharge tube 36. At this time, the compressor main body 30 is fixed to the tank head 50 directly, thereby minimizing the pressure loss of the compressed air due to pipeline friction.

Compressed air and scattered oil in the reservoir (60) are passed through the oil separator (90), where the oil is filtered and lubricated into the rotor casing (31) through the auxiliary oil supply line (95) and the compressed air It is moved to the air cooler 110 via the line 93. The compressed air passing through the air cooler 110 is cooled and discharged through the service line 94.

On the other hand, when the oil in the reservoir (60) is lower than the set temperature during the initial operation of the compressor is transferred to the oil filter 80 through the first oil supply line 101 by the operation of the temperature controller 100, after a predetermined time When the temperature is above the set temperature, the oil is transferred to the oil filter 80 via the oil cooler 120 through the first oil supply line 102.

The compressor system according to the present invention as described above has the following advantages.

First, the compressor has a structure in which the compressor body 30, the oil filter 80, the oil separator 90, the temperature controller 100, and the like are installed together in the tank head 50, which is advantageous in miniaturization of the system.

Second, since the above components have a structure in which the tank head 50 is directly fixed, oil and compressed air lines can be omitted. Accordingly, it is possible to minimize the loss and vibration of the discharge pressure of the compressed air due to the pipe loss, and to minimize the leakage of the compressed air and oil.

Third, the storage tank 60 may be formed by press working with one metal plate to improve production productivity.

Fourth, the passage 201 of air introduced into the housing 200 may be formed by the housing 200, the blocking member 210, and the guide member 220 in a U-turn shape to reduce the emission of noise.

Fifth, the scattered oil discharged from the discharge pipe 36 is partially dropped while passing through a predetermined distance and stored in the reservoir 60 and only a part of the oil separator 90 reaches the oil separator 90, thereby preventing the oil of the oil separator 90 from being discharged. Not only can the separation efficiency be increased, but the life can be extended.

As described above, the compressor system according to the present invention is advantageous in miniaturization while minimizing the loss of vibration, noise and discharge pressure.

Claims (9)

A compressor body for sucking air to discharge compressed air, an accumulator for receiving compressed air and oil discharged from the compressor body, and an air cooler and an oil cooler for cooling compressed air and oil discharged from the accumulator, respectively And an oil filter for filtering the oil discharged from the accumulator, and an oil separator for separating the oil in the compressed air discharged from the accumulator, wherein the accumulator includes the compressor. And a reservoir for storing compressed air and oil discharged from the main body, and a tank head coupled to the reservoir and to which the compressor main body is coupled. According to claim 1, The tank head has a first coupling hole is formed on one side of the compressor body is coupled, the other side is formed with a second coupling hole is coupled to the reservoir, the first, second coupling hole is Compressor system characterized in that the hollow portion is formed through the connection. According to claim 1, The tank head has a first coupling hole is coupled to the compressor body and the second coupling hole is coupled to the reservoir body on one side, the hollow portion through which the first and second coupling holes are connected is formed Compressor system characterized in that. The compressor system according to claim 1 or 2, wherein the reservoir is formed by pressing one metal plate by press working. The compressor system according to any one of claims 1 to 3, wherein the oil filter and the oil separator are fixed to the tank head. The rotor casing according to claim 1, wherein the compressor main body includes a suction chamber accommodating air and a water rotor accommodating the water rotor and the female rotor, which engage and rotate around a parallel two-axis core to form an operating space. A discharge casing coupled to form a discharge chamber through which air is discharged, and a first coupling hole for coupling the rotor casing to one surface of the tank head is formed, and a screw hole is formed at a predetermined interval at an edge of the first coupling hole. And a tank flange and a rotor flange screwed with the tank flange between the rotor casing and the discharge casing. The compressor system according to claim 6, wherein a discharge pipe for guiding oil and compressed air discharged to the discharge casing is combined. The rotor casing according to claim 1, wherein the compressor main body includes a suction chamber accommodating air and a suction rotor accommodating a water rotor and an arm rotor which are engaged with each other around the two parallel shafts to form an operating space. And a discharge casing coupled to form a discharge chamber through which air is discharged, wherein the rotor casing is integrated with the tank head. The compressor system according to claim 8, wherein the rotor casing and the tank head are formed together by casting.