WO2007050045A1

WO2007050045A1 - Separator in separator

Info

Publication number: WO2007050045A1
Application number: PCT/TR2006/000050
Authority: WO
Inventors: Kemal Yazici
Original assignee: Mikro Makina Sanayi Ve Ticaret A.S
Priority date: 2005-10-25
Filing date: 2006-10-20
Publication date: 2007-05-03

Abstract

This invention is about the separators which are used for separating the air and the oil from each other in compressors . This invention is especially subject to the innovation which is well adapted for a purpose of efficiency growth and prolongation of service life of separators which are acting like separating the air and the oil from each other that this oil and air exists in the compressor as mixed. By using two separate telescopic separators in this separator system (Figure 1) , the filter surface area is extended in the ratio of approximately 60% then the other separators which are used in the contemporary state of art and as a result of this, the contrast pressure is dropped and so high efficient performance and the durability of the separator is being provided.

Description

DESCRIPTION

SEPARATOR IN SEPARATOR

This invention is related with the separators which are used for separating the air and the oil from each other in compressors .

This invention is especially subject to the innovation which is well adapted for a purpose of efficiency growth and prolongation of service life of separators which are acting like separating the air and the oil from each other that this oil and air exists in the compressor as mixed.

The State of Art

On the contemporary state of art, in order to pump air by means of rotors of screw on screwed compressors, the impermeability in between the rotors and the body is provided by the oil. The heated oil, which comes through the screw together with the air, needs to be separated from the air and then to be cooled and to be injected to the screw again. The separation process of the air pumped by the compressor from the oil is performed by the means of separators .

The known separators, which are used on the contemporary state of art, are generally like convex and cylindrical chambers which consist of one single segment. In order to have a high efficient performance, fiber glass alloyed materials, which have high permeability and low resistance, are preferred and separators are made of these materials which are folded by metal sheet. When oil-air mixture enters to the separators, the speed of the mixture is lessening because of the sudden spreading. The oil is separated from the air current through the loss of heat, change on path of current and centrifugal force which are all occurred in this area. In order to separate even the smallest oil particles existing in the air current, the loss of the speed in the separator must be high enough.

Generally it is required that the separators and the air filters, which are used in the compressors, have the following features:

> To separate the oil and the air existing in the system

> To clean the impure air in the compressor > Long service life

> Low contrast pressure and high efficiency

> Impermeability

As if the separators having all these features are also dropping the contrast pressure in addition by the means of enlarging the surface area of the filters and are adequate and economical choice for high efficiency and more service life, then they can be evaluated as advantage by terms of use in the compressors.

As mentioned above, the separation process in the separator is basically carried out by the loss in the mixture speed by means of contrast pressure resulted from sudden expansion in the separator. As it appears from this explanation, the enlargement on the surface area of the filters has direct proportion with the drop of pressure and the loss in the speed of mixture. So, in order to increase the efficiency of the separators which are used in the compressors, the surface area of the filters must be enlarged. Above mentioned technical problems can be solved by means of two pieces of nested/telescopic separators (separator in separator) with various diameters, which are used in the separator system of subject matter of the invention. As a result of the separator of subject matter of the invention consists of two pieces of separators having different diameters, provided to be connected to the outer surface of the separator, the surface area of the filter can be enlarged at an average ratio of 60% and again as a result of this a high efficiency is provided in the separator, and capacity can be increased thus.

On the other hand, the factors which are affecting the service life of the separators are considered as run-time environment of the separator (dust in the air, percentage of relative humidity) , the diameter of the kept particle and the flow of the air which passed through the filters. In the separator of subject matter of the invention, the surface area of the filter is comparatively wide and so it is more stabilized to the bigger air flows and the particle diameters in comparison with the separators which are used in the contemporary state of art and as a result of this, its service life is longer with regard to the other separators.

Description of the Figures

Figure 1 : the view of 1/4 vertical cross section taken from the separator of subject matter of the invention . Figure 2 : the view of 1/2 vertical cross section taken from the separator of subject matter of the invention .

Figure 3 : the outer metal sheet of the internal separator. Figure 4 : the inner metal sheet of the internal separator. Figure 5 : the outer metal sheet of the external separator. Figure 6 : the inner metal sheet of the external separator. Figure 7 : the detailed view of the upper cover. Figure 8 : the detailed view of the outer ring/peripheral of the upper cover.

Figure 9 : the detailed view of bottom cover 1 (internal separator) . Figure 10 : the detailed view of the inner ring/peripheral of the bottom cover. Figure 11 : the detailed view of the outer ring/peripheral of the bottom cover. Figure 12 : the detailed view of bottom cover 2 (external separator) .

Detailed Description of The Preferred Embodiments

The separator system (Figure 1) of subject matter of the invention is basically composed of the metal sheets forming internal separator (4, 5), the metal sheets forming the external separator (6, 7), the upper and bottom covers (1, 3, 10) . Bottom cover of the internal separator (3) is attached to the upper cover of the external separator (1) by means of welding square metal plates (11) at four different points, and the upper and bottom covers of the external separator (1, 10) are attached to the external separator by using glue.

The internal separator is consisting of five different kinds of metal sheet groups, and these metal sheets are evaluated in two different groups as inner and outer.

The inner metal sheet group of the internal separator (4) is setting in with a kind of metal sheet which is the inmost one and its thickness is varying in between 1,0-3,0 mm. This metal sheet has a perforated form, and is folded with a fiber glass natured paper material. In order to provide the tightness of the paper, it is also folded with a perforated metal sheet which has a thickness of varying in between 0,7- 2,0 mm. This whole structure which is consisting of fiber glass in between is forming the inner metal sheet of the internal separator.

The outer metal sheet of the internal separator (5) is consisting of two different kinds of metal sheets and synthetic natured fibers are placed in between these metal sheets. The outer metal sheet of the internal separator (5) is setting in from inside to outside with a kind of metal sheet which is shaped in expanded form and its thickness is varying in between 0,5-1,0 mm. This metal sheet is folded with a synthetic natured fiber which has a weight in grams per square meter of varying in between 150-175 gr/m² and in order to provide the tightness of this fiber, another perforated metal sheet which has a thickness of varying in between 0,5-1,0 mm is placed onto the synthetic natured fiber.

As it emerges from the above given description in details, the internal separator, which consists of inner and outer metal sheets (4, 5) , is completed with a bottom cover (3) that is placed onto it. A kind of material sheet which has a thickness of varying in between 1,0-2,0 mm is used as raw material in the bottom cover (3) , and this cover has a convex shape. This buckled bottom cover is attached to the internal separator by using polyurethane based glue with two components or buy using epoxy based glue. The said buckled bottom cover (3) , as above described, can be convex or flat, or can be attached to the internal separator by using screw bolts instead of the glue. Like the internal separator, the external separator also consists of again five different kinds of metal sheet groups, and these metal sheets are evaluated in two different groups as inner and outer.

At the inmost part of the external separator, there is a metal sheet which has a thickness of varying in between 0,5- 1,0 mm due to the size of the separator, and this metal sheet can be shaped in expanded or perforated form. Onto this metal sheet, a synthetic natured fiber which has a weight in grams per square meter of varying in between 150-175 gr/m² is placed. In order to provide the tightness of this fiber, another perforated metal sheet which has a thickness of varying in between 1,0-3,0 mm is placed onto the synthetic natured fiber. And so, the inner metal sheet of the external separator (6) is being completed.

The outer metal sheet of the external separator (7) consists of another metal sheet which is folded with again a fiber glass natured paper and a perforated metal sheet which has a thickness of varying in between 0,5-1,0 mm and that is placed onto the fiber glass natured paper in order to provide its tightness .

The upper cover of the external separator (1) is made of a metal sheet which has thickness of varying in between 1,0-2,0 mm, and it can be perforated or imperforated. The upper cover

(1) and the outer ring/peripheral of the upper cover (2) are attached to the outmost metal sheet of the metal sheets group of the external separator by means of spots .

The above described external separator and the internal separator are welded to each other by using four pieces of square metal plates (11) at the top, and at the bottom they are attached together by means of the bottom cover of the external separator (10) . As shown in details on Figure 2, the upper cover of the external separator (1) is attached to the bottom cover of the internal separator by using four pieces of square metal plates (11) . At the bottom, the bottom cover of the external separator (10) is placed in the way that it contains the whole structure, and the external and the internal separators are fixed in the bottom cover (10) by means of the outer (9) and the inner (8) rings/peripherals of the bottom cover.

Differently from the known separators, which are used on the contemporary state of art, and within the context of the said invention, the surface area of the filter of the separator is increased at the ratio of approx. 60%, on the stipulation to adhere to the external surfaces of the separator, by means of the internal separator which is placed additionally to the inside of the separator. Upon the enlargement of the surface area of the filter, low contrast pressures can be obtained and thus it is provided that the separator has a high efficient performance. In other words, the oil-air mixture is provided to be filtered twice. And furthermore, the separator of subject matter of the invention is stabilized to high air flows and to large particle diameters because of the surface area of the filter is being enlarged, and so it has a long service life all the same it can also get easily adapted to the compressors which operates in various speeds . Accordingly it is easy and economic in terms of use.

The comparison of a current separator with highest efficiency founded on the market and the separator of subject matter of the invention in equal size to the current separator is given on the Table 1, in terms of criteria that presents high importance technically. Table 1

References

1 the upper cover 2 the outer ring/peripheral of the upper cover 3 the bottom cover (internal separator) 4 the inner metal sheet of the internal separator 5 the outer metal sheet of the internal separator the inner metal sheet of the external separator the outer metal sheet of the external separator the inner ring/peripheral of the bottom cover

9 the outer ring/peripheral of the bottom cover

10 the bottom cover (external separator)

11 square metal plates (four pieces)

Claims

1. The separator (Figure 1) is used in the compressors in order to separate the air-oil mixture from each other, and is characterized by the fact that it consists of two pieces of nested/telescopic separators which are called as internal (3) and external (10) separator.

2. The separator (Figure 1) according to claim 1 characterized in that the structure of the internal separator (3) which is placed additionally into the separator (Figure 1) consists of a perforated metal sheet inmost (4), a fiber glass natured paper on this metal sheet, a second perforated metal sheet (5) on this paper, another metal sheet (10) expanded on the second metal sheet (5), synthetic natured fiber (6) on this metal sheet (10), and a perforated metal sheet (7) covering this fiber (6) at outmost.

3. The separator (Figure 1) according to any of the claims mentioned above, characterized in that low contrast pressures are provided because of the enlargement on the surface area of the filter while the size of the separator remains the same, and by the fact that it can operate on the compressors which are generating air at high flows while the size of the separator remains the same .