KR100952157B1 - A helium compressor absorber with several functional filters - Google Patents

Abstract

PURPOSE: An adsorber for a helium compressor equipped with a functional filter is provided to effectively filter oil and activated charcoal components from compressed helium gas, and to perform a uniform filtering. CONSTITUTION: An adsorber for a helium compressor equipped with a functional filter comprises the following: a case(10) including an inlet and an outlet to flow helium gas; a filter(20) removing various impurities while minimizing pressure loss from the helium gas; a porous plate(30) formed with holes to guide the flow of the helium gas; and a supporting bar(40) supporting the porous plate. The filter includes: a demister filter(21) separating oil contained in the helium gas; an activated carbon filter(23) repeatedly adsorbing the oil, and removing the impurity included in the helium gas in which the oil is separated; and an activated carbon sheet filter(25) adsorbing activated charcoal components contained in the helium gas passed through the activated carbon filter.

Description

Adsorber for helium compressor with functional filter {A HELIUM COMPRESSOR ABSORBER WITH SEVERAL FUNCTIONAL FILTERS}

The present invention relates to an adsorber for a helium compressor having a functional filter, and more particularly, to minimize the pressure loss of helium gas generated in the adsorber, and to effectively filter oil and activated carbon components contained in the compressed helium gas. Various types of functional filters were installed, and the perforated plate shape of the internal support of the adsorber was optimized to eliminate the bias of the flow rate generated in the conventional adsorber, and a discharge device was installed to prevent backflow of separated oil. The present invention relates to an adsorber for a helium compressor equipped with a functional filter capable of extending the life of the adsorber.

The cryogenic freezer consists of a cooling unit including a compressor and a cold unit including a cold head. The working fluid mainly uses high-purity helium gas which has a low liquefaction temperature and is chemically stable under cryogenic conditions.

At this time, in order to fully exhibit the cooling performance of the cryogenic refrigerator, only pure helium gas containing various impurities including the oil component of the compressor should be introduced into the cold head. To this end, the helium compressor currently in use uses an adsorber, but it requires frequent repairs due to the mixing of oil components or the inflow of activated carbon components into the cold head due to continuous operation for a long time. It is acting as a detrimental factor.

The conventional adsorber has a problem in that the adsorption capacity is partially exerted due to partial contamination of the lower adsorbent due to the flow deflection of helium gas, thereby lowering the filtration function and causing a pressure drop, thereby shortening the life of the adsorber.

In addition, in the case of the existing cryogenic refrigerator, not only the cooling performance is significantly lowered due to the activated carbon component, but also the pressure loss and driving energy in the cryogenic space called the displacer in the cold head are increased, causing noise vibration. . Therefore, there is a need for improvement.

The present invention has been made in order to improve the above problems, a functional filter for minimizing the pressure loss of the helium gas discharged by forming a space between the plurality of filters stacked in multiple layers to provide a residual space of helium gas It is an object of the present invention to provide an adsorber for a helium compressor.

In addition, the present invention arranges a demister filter at a filter position where the helium gas flowing into the adsorber first passes among the stacked filters to separate the oil contained in the helium gas so as to filter the oil to the bottom of the adsorber. Accordingly, an object of the present invention is to provide an adsorber for a helium compressor having a functional filter for improving durability of each filter.

In addition, the present invention by placing the activated carbon sheet filter directly above the space portion of the stacked filters by minimizing the amount of activated carbon contained in the helium gas during the filtering by the lower side of the functional filter so that only pure helium gas is discharged It is an object of the present invention to provide an adsorber for a helium compressor.

In addition, the present invention not only improves the filter life according to the uniform flow of the flow by allowing the helium gas to uniformly pass through the entire porous plate by making a difference depending on the hole diameter of the porous plate supporting the stacked filters. The durability of the filter can be increased. It is then an object of the present invention to provide an adsorber for a helium compressor equipped with a functional filter that prevents the reverse flow of separated oil, thereby improving performance as well as extending the life of the filter in the adsorber.

Adsorber for a helium compressor having a functional filter according to the present invention includes: a case having an inlet and an outlet for helium gas flow, a filtration filter for removing various impurities while minimizing pressure loss from the helium gas flowing inside the case, And a support plate for supporting the lower side of the filtration filter and passing through the porous hole to guide the flow of helium gas, and a support bar for supporting the porous plate against the inner bottom of the case.

The porous plate is preferably through the porous holes of different sizes according to the diameter.

The perforated plate is divided into first, second, and third compartments in order as the diameter increases, and the first, second, and third compartments gradually increase the diameter of the perforated hole, and the perforated holes in the same compartment have the same diameter. This is preferred.

The filtration filter is a demister filter for separating the oil contained in the helium gas passing through, an activated carbon filter for removing impurities contained in the helium gas separating the oil passing through the demister filter and repeatedly adsorbing oil, and It includes an activated carbon sheet filter for adsorbing the activated carbon component contained in helium gas passing through the activated carbon filter.

It is preferable that a first glass fiber filter is interposed between the demister filter and the activated carbon filter to absorb oil from helium gas.

Between the activated carbon filter and the activated carbon sheet filter, it is preferable that a space portion for residual helium gas is formed in order to reduce the pressure loss of the helium gas finally passed.

The space portion preferably forms a mesh network to maintain a gap between the activated carbon filter and the activated carbon sheet filter.

On the upper side of the activated carbon sheet filter, a second glass fiber filter for oil absorption is laminated from the helium gas from which the activated carbon component is removed, and on the upper side of the second glass fiber filter, wool for finally removing the activated carbon component from helium gas. It is preferable that the felt filter is laminated.

The case is preferably provided with an inclined surface to collect the oil dropped to the floor by the demister filter.

As described above, the adsorber for a helium compressor equipped with a functional filter according to the present invention, unlike the prior art, forms a space between a plurality of filters stacked in a multi-layer, thereby providing a residual space of helium gas. Pressure loss can be minimized.

In addition, the present invention is to place the demister filter at the filter position where the helium gas flowing into the adsorber passes through the stacked filters to separate the oil contained in the helium gas to filter the oil to the bottom of the adsorber. Accordingly, the durability of each filter can be improved.

In addition, the present invention by placing the activated carbon sheet filter immediately above the space portion of the stacked filters can be removed as much as possible to remove the activated carbon components contained in the helium gas during the filtering as much as the degree of purification of the helium gas discharged Can be improved.

In addition, the present invention improves the degree of filtering as it can be uniformly filtered by allowing the helium gas to pass evenly over the entire porous plate by varying the size of the porous hole of the porous plate supporting the stacked filter according to the diameter In addition to increasing the durability of the filter.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the adsorber for a helium compressor having a functional filter according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a longitudinal sectional view of an adsorber for a helium compressor having a functional filter according to an embodiment of the present invention, and FIG. 2 is a plan view of a porous plate of the adsorber for a helium compressor having a functional filter according to an embodiment of the present invention. 3 is a flow chart of helium gas inside an adsorber for a helium compressor equipped with a functional filter according to an embodiment of the present invention.

4 is a view showing a discharge state of oil accumulated in the bottom of the adsorber for the helium compressor having a functional filter according to an embodiment of the present invention, Figure 5 is a helium with a functional filter according to an embodiment of the present invention A perspective view showing a mesh network of a compressor adsorber.

1 to 5, an adsorber for a helium compressor having a functional filter according to an embodiment of the present invention may include a case 10, a filtration filter 20, a porous plate 30, and a support bar 40. Include.

The case 10 receives a helium gas and provides a space for inducing discharge of the purified helium gas after filtering.

Thus, the case 10 forms an inlet 12 connected to the inside to receive the contaminated helium gas, and forms an outlet 14 connected inside and outside to discharge the purified helium gas.

In this case, the case 10 may freely change the shape positions of the inlet 12 and the outlet 14, but since the helium gas is lighter than air, the inlet 12 is formed on the lower circumferential surface and the outlet 14 is formed. It is preferable to form in the upper peripheral surface.

In addition, the inlet 12 and the outlet 14 are preferably formed in a diagonal direction in the case 10.

Of course, the case 10 may be modified in various shapes and various materials.

In addition, the case 10 includes a filtration filter 20 therein for filtering the contaminated helium gas flowing therein.

That is, the contaminated helium gas is introduced into the inlet 12 and passes through the filtration filter 20 to remove various impurities as much as possible, and the purified helium gas is then discharged through the outlet 14.

Here, impurities refer to oils, activated carbon components, moisture, and the like.

On the other hand, the porous plate 30 serves to support the lower side of the filter filter 20, and through the porous hole 31 to guide the upward flow of helium gas introduced into the case 10.

The porous plate 30 can be deformed into various shapes.

The support bar 40 supports the porous plate 30 with respect to the inner bottom of the case 10.

That is, the porous plate 30 maintains a state spaced apart from the bottom of the case 10 by the length of the support bar 40.

In this case, the support bar 40 may be deformed into various shapes and various materials, and preferably supports the porous plate 30 in a state where it is firmly fixed to the bottom of the case 10.

Thus, the support bars 40 are firmly fixed to the bottom surface of the case 10 by welding or the like, and at least four support bars 40 may be provided to sufficiently support the lower side of the porous plate 30.

In particular, the support bar 40 may integrate the porous plate 30 by welding or the like, but is preferably formed to be easily separated from the porous plate 30 for maintenance of the porous plate 30.

In addition, the size of the porous plate 30 can be applied in various ways. Of course, the number of support bars 40 is not limited.

In addition, the contaminated helium gas is introduced into the lower side of the case 10 and then flows upwardly to the filtration filter 20 through the porous hole 31 of the porous plate 30.

Therefore, the support bar 40 is preferably to minimize the thickness within the possible range in order to minimize the resistance to the flow of helium gas.

On the other hand, since the contaminated helium gas is introduced at high speed through the inlet 12, the contaminated helium gas flows to the filtration filter 20 through the porous hole 31 distributed far from the inlet 12.

That is, the filtration filter 20 is introduced into the helium gas through a portion that is biased to the lower portion of the durability is reduced.

Therefore, the porous plate 30 passes through the porous holes 33, 35, 37 of different sizes according to the diameter.

As an example, the porous plate 30 is divided into first, second, and third compartments 32, 34, and 36 in order as the diameter increases.

In other words, the porous plate 30 is partitioned into a first compartment 32 along a circle trajectory from the center to a constant diameter, and the second compartment (a) along the circle trajectory from the first compartment 32 to a diameter set outwardly. 34), and is divided into a third compartment 36 from the second compartment 34 to the entire outer side.

In addition, a plurality of first through holes 33 having a predetermined diameter are formed in the first compartment 32, and a second through hole 35 larger than the diameter of the first through holes 33 is formed in the second compartment 34. The plurality of through holes are provided, and the third compartment 36 has a plurality of third through holes 37 larger than the diameter of the second through hole 35.

That is, the first porous hole 33, the second porous hole 35 and the third porous hole 37 are formed to gradually increase in diameter in order.

At this time, all of the first porous holes 33 formed in the first compartment 32 have the same diameter, all the second porous holes 35 formed in the second compartment 34 have the same diameter, and the third All the third porous holes 37 formed in the partition 36 have the same diameter.

Of course, the porous plate 30 may be formed such that all the porous holes 31 gradually increase in diameter as the diameter increases.

Accordingly, as shown in FIG. 3, the contaminated helium gas introduced into the case 10 may have a substantially uniform amount throughout the first porous hole 33, the second porous hole 35, and the third porous hole 37. Will pass through.

Thus, since the filtration filter 20 contacts and passes the helium gas evenly over the entire lower side, durability is improved as compared with passing the helium gas unevenly to the lower part.

Meanwhile, the filtration filter 20 includes a demister filter 21, a first glass fiber filter 22, an activated carbon filter 23, an activated carbon sheet filter 25, a second glass fiber filter 26 and a wool felt filter. And (27).

Here, the filtration filter 20 is the demister filter 21, the first glass fiber filter 22, the activated carbon filter 23, the activated carbon sheet filter 25, the second glass in the direction in which contaminated helium gas flows. The fiber filter 26 and the wool felt filter 27 are laminated in this order.

In addition, the demister filter 21, the first glass fiber filter 22, the activated carbon filter 23, the activated carbon sheet filter 25, the second glass fiber filter 26 and the wool felt filter 27 are porous plates In order to pass all the helium gas past the porous hole 31 of 30, the porous plate 30 is preferably sized to cover the whole.

In particular, the demister filter 21 is supported on the upper side of the porous plate 30 and serves to separate the oil contained in the helium gas that passes first. Of course, the demister filter 21 can be modified in various shapes and thicknesses.

Although not shown, the demister filter 21 is formed so that the longitudinal wires of the metal material overlap each other so as to vertically cross the wires of the metal material and form pores. Thus, the demister filter 21 can more effectively separate various impurities contained in the incoming helium gas to fall to the bottom of the case 10. Of course, the demister filter 21 collects some of various impurities contained in helium gas.

Therefore, the case 10 has accumulated oil at the bottom by the demister filter 21.

Thus, the case 10 has an inclined surface 16 at the bottom. This inclined surface 16 serves to collect the falling oil in one place. In particular, it is preferable that the inclined surface 16 is formed so that the falling oil is collected at the bottom center of the case 10.

The case 10 passes through the discharge hole 18 at the bottom center. The discharge hole 18 serves to discharge the collected oil to a predetermined position.

The discharge hole 18 can be applied to various shapes and various positions.

In addition, the first glass fiber filter 22 is stacked on the demister filter 21 and passes through the demister filter 21 to remove impurities contained in helium gas from which the oil is separated, and to adsorb oil. Do it.

In particular, the first glass fiber filter 22 is preferably made of a glass fiber nonwoven fabric. Thus, the first glass fiber filter 22 is excellent in adsorption property.

The first glass fiber filter 22 is applicable to various shapes and various thicknesses.

Then, the activated carbon filter 23 is laminated on the upper side of the first glass fiber filter 22 and passes through the demister filter 21 included in helium gas passing through the first glass fiber filter 22 to separate oil. It removes impurities contained in a helium gas and repeatedly absorbs oil.

In particular, although not shown, the activated carbon filter 23 functions to adsorb oil and other impurities from helium gas introduced by forming a filter medium inside the frame.

At this time, the activated carbon filter 23 adsorbs the oil once again while passing the helium gas from which the oil is removed while passing through the first glass fiber filter 22.

Therefore, helium gas can remove oil as much as possible.

Here, the helium gas includes the activated carbon component while passing through the activated carbon filter 23.

Therefore, helium gas is preferably to remove the activated carbon component during the filtering process.

For this reason, the activated carbon sheet filter 25 is arrange | positioned above the activated carbon filter 23. FIG.

The activated carbon sheet filter 25 serves to adsorb activated carbon components contained in helium gas that has passed through the activated carbon filter 23.

That is, the activated carbon sheet filter 25 performs a function of sufficiently adsorbing activated carbon components. Of course, this activated carbon sheet filter 25 is applicable to various shapes and models.

On the other hand, the second glass fiber filter 26 is stacked on the upper side of the activated carbon sheet filter 25 serves to absorb oil from the helium gas from which the activated carbon component is removed.

This second glass fiber filter 26 is preferably made of the same material as the first glass fiber filter 22.

That is, the first glass fiber filter 22 and the second glass fiber filter 26 perform the same function, thereby repeatedly removing the oil contained in the helium gas, thereby minimizing or completely removing the oil content.

In addition, the wool felt filter 27 is stacked on the upper side of the second glass fiber filter 26 serves to finally remove the activated carbon component from the helium gas.

That is, the wool felt filter 27 filters the activated carbon contained in the helium gas in the activated carbon sheet filter 25 and then filters the secondary carbon.

Therefore, the demister filter 21, the first glass fiber filter 22, the second glass fiber filter 26 and the activated carbon filter 23 serve to filter oil contained in helium gas.

In addition, the activated carbon sheet filter 25 and the wool felt filter 27 serve to remove activated carbon components contained in helium gas while passing through the activated carbon filter 23.

On the other hand, each of the demister filter 21, the first glass fiber filter 22, the activated carbon filter 23, the activated carbon sheet filter 25, the second glass fiber filter 26 and the wool felt filter 27 is set It can be applied to other materials that perform functions.

As a result, the filtration filter 20 includes a demister filter 21, a first glass fiber filter 22, an activated carbon filter 23, an activated carbon sheet filter 25, a second glass fiber filter 26 and a wool felt. Since the filters 27 are stacked in order, impurities contained in helium gas can be divided and removed, thereby increasing durability and improving the degree of purification of helium gas.

In particular, it is preferable that the pressure of helium gas flowing into the inlet 12 and the pressure of helium gas discharged to the outlet 14 after being purified are not significantly different.

This is because the helium gas discharged from the case 10 is equal to or the same as the pressure of the helium gas introduced into the case 10, so that the entire flow of helium gas can be uniform in the entire installation.

Therefore, between the demister filter 21, the first glass fiber filter 22, the activated carbon filter 23, the activated carbon sheet filter 25, the second glass fiber filter 26 and the wool felt filter 27, respectively. Or it is preferable to form the space part 24 in any one site | part.

The space portion 24 is a buffer space that maintains the amount or pressure of helium gas discharged through the discharge port 14 by temporarily remaining helium gas to be filtered.

At this time, the space 24 is between the demister filter 21 and the first glass fiber filter 22, between the first glass fiber filter 22 and the activated carbon filter 23, the activated carbon filter 23 and the activated carbon sheet Between the filters 25, between the activated carbon sheet filter 25 and the second glass fiber filter 26 and between the second glass fiber filter 26 and the wool felt filter 27 may be formed in whole or in part.

In particular, the space 24 may prevent a sufficient pressure loss from being located only anywhere in the case 10.

In addition, the total volume of the case 10 may be minimized as the installation number of the space 24 and the space 24 are minimized.

For convenience, the space 24 is shown to be formed between the activated carbon filter 23 and the activated carbon sheet filter 25.

That is, the space 24 is formed in the center of the filtration filter 20 made of a multilayer.

Of course, the space 24 may be formed at various positions.

At this time, since the activated carbon filter 23 and the activated carbon sheet filter 25 are separated by the space part 24, the space part 24 maintains an interval between the activated carbon filter 23 and the activated carbon sheet filter 25. It is preferred to have a mesh net 28 for this purpose.

The mesh net 28 is made of a material capable of sufficiently supporting the activated carbon sheet filter 25, and is preferably formed to minimize fluidity resistance of the flowing helium gas.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a longitudinal sectional view of an adsorber for a helium compressor equipped with a functional filter according to an embodiment of the present invention.

Figure 2 is a plan view of the porous plate of the adsorber for helium compressor having a functional filter according to an embodiment of the present invention.

3 is a flow chart of helium gas inside the adsorber for a helium compressor equipped with a functional filter according to an embodiment of the present invention.

4 is a view showing a discharge state of oil accumulated in the bottom of the adsorber for helium compressor having a functional filter according to an embodiment of the present invention.

Figure 5 is a perspective view showing a mesh network of the adsorber for helium compressor having a functional filter according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

10: case 12: inlet

14: outlet 16: slope

20: filtration filter 21: demister filter

22, 26: 1,2 glass fiber filter 23: activated carbon filter

24: space part 25: activated carbon sheet filter

27: wool felt filter 28: mesh network

30: perforated plate 31: perforated hole

32, 34, 36: 1,2,3, compartment 33,35,37: 1,2,3 porous hole

40: support bar

Claims (9)

A case having an inlet and an outlet for helium gas flow; A filtration filter which removes various impurities while minimizing pressure loss from the helium gas flowing inside the case; A porous plate supporting the lower side of the filtration filter and passing through the porous hole to guide the flow of helium gas; And A support bar for supporting the porous plate with respect to the inner bottom of the case; The filtration filter, Demister filter for separating the oil contained in the helium gas passing through; An activated carbon filter passing through the demister filter to remove impurities contained in helium gas from which the oil is separated and to repeatedly adsorb the oil; And And an activated carbon sheet filter for adsorbing activated carbon contained in helium gas passing through the activated carbon filter. The method of claim 1, The porous plate is a helium compressor adsorber with a functional filter, characterized in that through the through holes of different sizes according to the diameter. 3. The method of claim 2, The porous plate is divided into first, second and third compartments in order as the diameter increases; The first 1,2,3 compartments gradually increase the diameter of the porous hole; Adsorbers for helium compressors with a functional filter, characterized in that the perforations in the same section are of the same diameter. delete The method of claim 1, And a first glass fiber filter for absorbing oil from helium gas is interposed between the demister filter and the activated carbon filter. The method of claim 1, Adsorber for a helium compressor having a functional filter between the activated carbon filter and the activated carbon sheet filter to form a space for the residual helium gas to reduce the pressure loss of the helium gas finally passed. The method of claim 6, And the space portion forms a mesh network to maintain a gap between the activated carbon filter and the activated carbon sheet filter. The method of claim 1, On the upper side of the activated carbon sheet filter is laminated a second glass fiber filter for oil absorption from helium gas from which the activated carbon component is removed; An upper side of the second glass fiber filter is an adsorber for a helium compressor having a functional filter, characterized in that the wool felt filter is laminated in order to finally remove the activated carbon component from the helium gas. The method of claim 1, The case has a helium compressor adsorber, characterized in that the inclined surface to collect the oil dropped to the floor by the demister filter.

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