Filter assembly and oil separator

Abstract

The utility model provides a filtering assembly and an oil separator, and relates to the technical field of filtering. The filtering assembly comprises a filtering filler and at least two filtering cover plates, each filtering cover plate comprises a filtering part and a connecting arm, at least part of the connecting arm and the filtering part are arranged at an angle, and the connecting arm is convexly arranged on the filtering part; any two adjacent filter cover plates are overlapped along the axial direction of the filter cover plates; any two adjacent filtering cover plates are connected with each other through respective connecting arms to form an accommodating space or are connected with each other through one filtering part and the other connecting arm to form an accommodating space; the filtering part is provided with a plurality of first filtering holes which are formed at intervals, and each first filtering hole penetrates through the thickness direction of the filtering part and is communicated with the accommodating space; the filtering filler is filled in the accommodating space, and a gap in the filtering filler is smaller than the first filtering holes. The filtering cover plate and the filtering filler can realize multi-layer filtering, so that the filtering effect is improved, oil drops are distributed at different positions, the accumulation of the oil drops is slowed down, and the cleaning frequency is reduced.

Description

Technical Field

[0001] The present application relates to the field of filtering technology, and in particular to a filtering component and an oil separator. Background Art

[0002] The oil separator separates the refrigeration oil from the gaseous refrigerant through centrifugal motion, and the separated refrigeration oil returns to the compressor from the oil return hole, and the gaseous refrigerant is output to the compressor through the air outlet. However, the diversion effect of centrifugal motion is limited, and the gaseous refrigerant may still be mixed with oil droplets. In the related technology, a filter screen is provided in the cylinder of the oil separator to further separate the oil droplets in the refrigerant gas through filtration. After the oil separator is used for a long time, the oil droplets adhere to the filter screen, resulting in poor filtering and separation effect of the filter screen, affecting the oil return efficiency. Utility Model Content

[0003] Based on this, it is necessary to provide a filter assembly and an oil separator to improve the filtering and separation effect and reduce the impact of oil droplet adhesion and accumulation.

[0004] A filter assembly comprises a filter filler and at least two filter cover plates, each of the filter cover plates comprises a filter portion and a connecting arm, at least a portion of the connecting arm is arranged at an angle to the filter portion and protrudes from the filter portion; any two adjacent filter cover plates are stacked along their own axial direction; between any two adjacent filter cover plates, an accommodating space is formed by connecting each other with the connecting arms or by connecting the filter portion of one of them with the connecting arm of the other to form an accommodating space; the filter portion is constructed with a plurality of first filter holes arranged at intervals, each of the first filter holes is arranged through the thickness direction of the filter portion, and the first filter hole is connected to the accommodating space; the filter filler is filled in the accommodating space, and the gap in the filter filler is smaller than the first filter hole.

[0005] It is understandable that the filter part is provided with a first filter hole to filter out large-volume oil droplets, the connection arm is provided to facilitate the connection of two adjacent filter cover plates, and there is a space between the two adjacent filter cover plates to facilitate the filling of the filter filler, and the filter filler can further enhance the filtering effect on the basis of the filter cover plate. In summary, the setting of the filter cover plate and the filter filler can achieve multi-layer filtering, which is conducive to improving the filtering effect, distributing the oil droplets in different positions, slowing down the adhesion and accumulation of oil droplets, and reducing the number of cleaning times.

[0006] In one embodiment, the connecting arm is provided with a plurality of second filter holes arranged at intervals, and each of the second filter holes is arranged to penetrate along the thickness direction of the connecting arm.

[0007] It can be understood that the connecting arm is provided with a second flow hole to achieve filtration along the radial direction of the filter cover plate.

[0008] In one embodiment, the second filter hole is not larger than the first filter hole, and the second filter hole is larger than the gap.

[0009] It can be understood that such a configuration can enhance the filtering effect of the connecting arm along the radial direction of the filter assembly and reduce the accumulation and clogging of oil droplets.

[0010] In one embodiment, the connecting arm includes a first extension segment and a second extension segment, the first extension segment is connected between the second extension segment and the filter portion, the first extension segment and the second extension segment are arranged at an angle, and the second extension segment is connected to the adjacent filter cover plate.

[0011] It can be understood that the first extension section has a radial limiting effect on the filter filler, and the second extension section is provided to increase the connection area to facilitate the connection between two adjacent filter cover plates.

[0012] In one embodiment, the diameter of the first filter hole is no greater than 10% of the outer diameter of the filter portion.

[0013] It can be understood that, with such an arrangement, the aperture of the first filter hole is smaller, and a good filtering effect is achieved.

[0014] In one of the embodiments, along the axial direction of the filter assembly, the filter portion is protruded toward the filter filler, and surfaces of the filter portion on both sides along its thickness direction are both configured as curved surfaces.

[0015] It can be understood that such a configuration is conducive to increasing the filtering area, and the filtered oil droplets can also move along the curved surface toward the edge of the filtering portion.

[0016] In one of the embodiments, two filter cover plates are provided, and along the axial direction of the filter cover plate, the connecting arms of the two filter cover plates are arranged opposite to each other and connected to form the accommodating space.

[0017] It can be understood that such an arrangement allows two adjacent filter parts to be spaced apart by the distance between two connecting arms, thereby increasing the accommodation space to accommodate more filter fillers and enhance the filtering effect.

[0018] In one of the embodiments, the filter assembly has a first side and a second side along its own axial direction; the filter assembly includes a first stacking group, the filter cover plate in the first stacking group is a first filter cover plate, the connecting arms of each of the first filter cover plates in the first stacking group are all facing the first side, a plurality of the first filter cover plates are stacked axially along the filter assembly, between any two adjacent first filter cover plates, the filter portion of one of the first filter cover plates is connected to the connecting arm of another of the first filter cover plates; the filter assembly also includes a second stacking group, the filter cover plate in the second stacking group is a second filter cover plate; the connecting arms of each of the second filter cover plates in the second stacking group are all facing the second side, a plurality of the second filter cover plates are stacked axially along the filter assembly, between any two adjacent second filter cover plates, the filter portion of one of the second filter cover plates is connected to the connecting arm of another of the second filter cover plates; the first stacking group and the second stacking group are relatively stacked and connected.

[0019] It can be understood that the provision of the first filter cover plate and the second filter cover plate can increase the accommodation space while facilitating the stacking of multiple first filter cover plates and / or second filter cover plates to enhance the filtering effect.

[0020] The present application also provides an oil separator, which includes a cylinder, an air inlet pipe, an air outlet pipe and a filter assembly; the cylinder is provided with an air inlet and an air outlet spaced apart along its axial direction; the air inlet pipe is passed through the air inlet and is connected to the cylinder; the air outlet pipe is passed through the air outlet and is connected to the cylinder; the filter assembly is installed in the cylinder through the connecting arm, and along the axial direction of the cylinder, the filter assembly is located between the ports of the air inlet pipe and the air outlet pipe located in the cylinder.

[0021] It can be understood that arranging the filter assembly in the oil separator has a good filtering effect on filtering oil droplets in the refrigerant gas.

[0022] In one embodiment, the height of the filter assembly accounts for 5% to 20% of the height of the cylinder.

[0023] It is understandable that the filter assembly has a sufficient height to ensure the filtering effect without interfering with other structures in the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of a filter cover plate in a filter assembly provided in the present application;

[0026] Figure 2 A cross-sectional view of another embodiment of a filter cover plate in a filter assembly provided by the present application;

[0027] Figure 3 A cross-sectional view of a filter assembly in a first embodiment provided in the present application without filter filler;

[0028] Figure 4 A cross-sectional view of a filter assembly filled with filter filler in the first embodiment provided in the present application;

[0029] Figure 5 A cross-sectional view of a filter assembly in a second embodiment provided in the present application;

[0030] Figure 6 A cross-sectional view of a filter assembly in a third embodiment provided in the present application;

[0031] Figure 7 A cross-sectional view of the oil separator provided for this application.

[0032] Figure numerals: 1000, oil separator; 100, filter assembly; 200, cylinder; 300, air inlet pipe; 400, air outlet pipe; 500, oil return pipe; 1001, accommodating space; 10, filter cover plate; 11, first filter cover plate; 12, second filter cover plate; 101, filter part; 1011, first filter hole; 102, connecting arm; 1021, second filter hole; 1022, first extension section; 1023, second extension section; 20, filter filler. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0038] See also Figures 1 to 7The present application provides a filter assembly 100, comprising a filter filler 20 and at least two filter cover plates 10, each filter cover plate 10 comprising a filter portion 101 and a connecting arm 102, at least a portion of the connecting arm 102 is arranged at an angle to the filter portion 101, and is convexly arranged on the filter portion 101; any two adjacent filter cover plates 10 are stacked along their own axial direction; the connecting arms 102 of any two adjacent filter cover plates 10 are connected to each other and enclosed to form a receiving space 1001, or any two adjacent filter cover plates 10 In the figure, the filter part 101 of one filter cover plate 10 is connected to the connecting arm 102 of another filter cover plate 10 and surrounds a receiving space 1001; the filter part 101 is constructed with a plurality of first filter holes 1011 arranged at intervals, each of which is arranged to penetrate along the thickness direction of the filter part 101, and the first filter holes 1011 are connected to the receiving space 1001; the filter filler 20 is filled in the receiving space 1001, and the gap in the filter filler 20 is smaller than the first filter hole 1011.

[0039] In this way, the filter cover plate 10 filters out the larger oil droplets by setting the first filter hole 1011 at the filter part 101. By setting at least two filter cover plates 10 to achieve at least two layers of filtering of large oil droplets, it is beneficial to improve the filtering effect. The setting of the connecting arm 102 facilitates the connection of two adjacent filter cover plates 10. The two adjacent filter cover plates 10 can be surrounded to form a containing space 1001 to facilitate filling the filter filler 20. The gap in the filter filler 20 is small, which can better contact the refrigerant gas and filter small oil droplets, so as to further enhance the filtering effect on the basis of the filter cover plate 10. After long-term use, some oil droplets will adhere to the filter assembly 100, hindering the flow of fluid and affecting the filtering effect. It is precisely because the present application sets the filter cover plate 10 and the filter filler 20 that the oil droplets of different volumes are separated, so that the oil droplets of different volumes will not adhere to the same filter cover plate 10 or the filter filler 20, slowing down the accumulation of oil droplets, extending the single use time of the filter assembly 100, reducing the number of cleaning times, and improving work efficiency.

[0040] In a specific embodiment, the connection between two adjacent filter cover plates 10 can be achieved by welding, clamping, bonding, etc., which is not specifically limited here.

[0041] It should be noted that the filter packing 20 in the accompanying drawings is only for illustration and does not specifically limit the structure of the filter packing 20. Different filter packings 20 can be selected according to actual working conditions. In a specific embodiment, the filter packing 20 can be a plurality of stainless steel wires intertwined with each other, and the dense stainless steel wires can be used to block the entry of fine oil droplets, and the gaps between the stainless steel wires can allow the fluid to flow.

[0042] In some embodiments, the pore size of the first filter hole 1011 is not greater than 10% of the diameter of the filter portion 101, so that the fluid can pass through the first filter hole 1011 while preventing large volume oil droplets from passing through. Exemplarily, the pore size of the first filter hole 1011 is 2%, 5% or 10% of the diameter of the filter portion 101.

[0043] like Figures 1 to 6 As shown, in a further embodiment, the connecting arm 102 is provided with a plurality of second filter holes 1021 arranged at intervals, and each second filter hole 1021 is arranged to penetrate along the thickness direction of the connecting arm 102 to achieve radial filtration along the filter assembly 100, increase the filtration area, and facilitate the filtration effects in different directions, and can also reduce the material of the connecting arm 102 and reduce costs.

[0044] In some embodiments, the second filter hole 1021 is not larger than the first filter hole 1011, and the second filter hole 1021 is larger than the gap. With this arrangement, the second filter hole 1021 can block more small-volume oil droplets along the radial direction of the filter component 100, thereby enhancing the radial filtering effect. At the same time, the second filter hole 1021 being larger than the gap also avoids the oil droplets blocking the second filter hole 1021 due to the small aperture.

[0045] like Figure 2 As shown, in a further embodiment, the connecting arm 102 includes a first extension section 1022 and a second extension section 1023, the first extension section 1022 is connected between the second extension section 1023 and the filter portion 101, the first extension section 1022 and the second extension section 1023 are arranged at an angle, and the second extension section 1023 is connected to the adjacent filter cover plate 10. Among them, the first extension section 1022 can increase the axial size of the filter cover plate 10 to form the accommodating space 1001, and at the same time, the first extension section 1022 can radially limit the filter filler 20 in the accommodating space 1001. Further, the second extension section 1023 is conducive to increasing the connection area with the adjacent filter cover plate 10 and improving the connection stability.

[0046] In some embodiments, along the axial direction of the filter assembly 100, the filter portion 101 is convexly disposed toward the filter filler 20, and the surfaces of the filter portion 101 on both sides along its thickness direction are both curved surfaces, which have a larger filtering area than a flat surface, and are conducive to enhancing the filtering effect. Furthermore, the curved surface is arranged so that the oil droplets follow the curved direction of the curved surface and move toward the edge of the curved surface, which is conducive to the discharge of the oil droplets as soon as possible.

[0047] like Figure 3 and Figure 4As shown, in some embodiments, two filter cover plates 10 are provided, and along the axial direction of the filter cover plate 10, the connecting arms 102 of the two filter cover plates 10 are relatively arranged and connected, that is, the two filter cover plates 10 are connected by their respective connecting arms 102, and the two connecting arms 102 abut against each other and limit each other, and can be connected to each other on this basis, and there is a distance of two connecting arms 102 between two adjacent filter parts 101, and the accommodating space 1001 has a larger height dimension, which is conducive to increasing the accommodating space 1001 and promoting the filling of more filter fillers 20.

[0048] like Figure 5 As shown, in other embodiments, the connecting arms 102 corresponding to each filter portion 101 are arranged in the same direction along their own axial direction. In any two adjacent filter cover plates 10, the filter portion 101 of one filter cover plate 10 is connected to the connecting arm 102 of the other filter cover plate 10. This arrangement facilitates stacking of multiple layers of filter cover plates 10 to achieve multi-layer filtration.

[0049] like Figure 6 As shown, in other embodiments, the filter assembly 100 has a first side and a second side along its own axial direction, and the filter assembly 100 includes a first stacking group, the filter cover plate 10 in the first stacking group is a first filter cover plate 11, and the connecting arms 102 of each first filter cover plate 11 in the first stacking group are all facing the first side, and multiple first filter cover plates 11 are stacked along the axial direction of the filter assembly, and between any two adjacent first filter cover plates 11, the filter portion 101 of one first filter cover plate 11 is connected to the connecting arm 102 of another first filter cover plate 11; the filter assembly also includes a second stacking group, the filter cover plate 10 in the second stacking group is a second filter cover plate 12; the connecting arms 102 of each second filter cover plate 12 in the second stacking group are all facing the second side, and multiple second filter cover plates 12 are stacked along the axial direction of the filter assembly, and between any two adjacent second filter cover plates 12, the filter portion 101 of one second filter cover plate 12 is connected to the connecting arm 102 of another second filter cover plate 12. The first stacking group and the second stacking group are stacked and connected relative to each other.

[0050] In this way, by setting the first stacking group and the second stacking group, multiple first filter cover plates 11 and / or second filter cover plates 12 are stacked, which is beneficial to increase the number of stacked filter cover plates 10 and enhance the filtering effect. Since the first stacking group and the second stacking group are connected by relative stacking, the relative arrangement and connection of one of the first filter cover plates 11 and the second filter cover plate 12 is beneficial to enclose and form a larger accommodation space 1001, so as to further enhance the filtering effect.

[0051] like Figure 7As shown, the present application also provides an oil separator 1000, which includes a cylinder 200, an air inlet pipe 300, an air outlet pipe 400 and a filter assembly 100; the cylinder 200 is provided with an air inlet and an air outlet spaced apart along its own axial direction; the air inlet pipe 300 is passed through the air inlet and is connected to the cylinder 200; the air outlet pipe 400 is passed through the air outlet and is connected to the cylinder 200; the filter assembly 100 is installed in the cylinder 200 through a connecting arm 102, and along the axial direction of the cylinder 200, the filter assembly 100 is located between the ports of the air inlet pipe 300 and the air outlet pipe 400 located in the cylinder 200.

[0052] In this way, the refrigerant gas can enter the cylinder 200 from the air inlet pipe 300, and then flow out of the cylinder 200 from the air outlet pipe 400 after being filtered by the filter assembly 100. The filter assembly 100 can filter out the oil droplets in the refrigerant gas. Among them, the filter part 101 can filter out large-volume oil droplets, and the filter filler 20 can filter out relatively small-volume oil droplets. After long-term use, even if there are oil droplets attached, they will be distributed at different positions along the axial direction of the filter assembly 100, avoiding long-term accumulation at the same radial position to cause blockage, thereby ensuring the filtering effect.

[0053] In a further embodiment, the height dimension of the filter assembly 100 accounts for 5% to 20% of the height dimension of the cylinder 200, so as to ensure sufficient thickness for filtering, thereby ensuring the filtering effect, and at the same time, avoiding interference with other structures such as the air intake pipe 300 in the cylinder 200. Exemplarily, the height dimension of the filter assembly 100 accounts for 5%, 10% or 20% of the height dimension of the cylinder 200.

[0054] like Figure 7 As shown, in a specific embodiment, the cylinder 200 is provided with an oil return port, and the oil separator 1000 further includes an oil return pipe 500 , which is connected to the oil return port, and the filtered oil flows out from the oil return port into the oil return pipe 500 .

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A filter assembly, characterized in that: include: At least two filter cover plates (10), each of the filter cover plates (10) comprising a filter portion (101) and a connecting arm (102), at least a portion of the connecting arm (102) being arranged at an angle with the filter portion (101) and protruding from the filter portion (101); any two adjacent filter cover plates (10) being stacked along their own axial direction; Any two adjacent filter cover plates (10) are connected to each other through their respective connecting arms (102) to form an accommodation space (1001), or the filter portion (101) of one of them is connected to the connecting arm (102) of the other to form an accommodation space (1001); The filter portion (101) is configured with a plurality of first filter holes (1011) arranged at intervals, each of the first filter holes (1011) being arranged to penetrate along the thickness direction of the filter portion (101), and the first filter holes (1011) are in communication with the accommodating space (1001); A filter filler (20) is filled in the accommodating space (1001), and a gap in the filter filler (20) is smaller than the first filter hole (1011).

2. The filter assembly according to claim 1, characterized in that: The connecting arm (102) is provided with a plurality of second filtering holes (1021) arranged at intervals, and each of the second filtering holes (1021) is arranged to penetrate along the thickness direction of the connecting arm (102).

3. The filter assembly according to claim 2, characterized in that: The second filter hole (1021) is not larger than the first filter hole (1011), and the second filter hole (1021) is larger than the gap.

4. The filter assembly according to any one of claims 1 to 3, characterized in that: The connecting arm (102) comprises a first extension section (1022) and a second extension section (1023); the first extension section (1022) is connected between the second extension section (1023) and the filter portion (101); the first extension section (1022) and the second extension section (1023) are arranged at an angle; and the second extension section (1023) is connected to the adjacent filter cover plate (10).

5. The filter assembly according to any one of claims 1 to 3, characterized in that: The diameter of the first filter hole (1011) is no greater than 10% of the outer diameter of the filter portion (101).

6. The filter assembly according to any one of claims 1 to 3, characterized in that: Along the axial direction of the filter assembly, the filter portion (101) is convexly arranged toward the filter filler (20), and surfaces on both sides of the filter portion (101) along its own thickness direction are arranged as curved surfaces.

7. The filter assembly according to any one of claims 1 to 3, characterized in that: The filter cover plates (10) are provided with two connection arms (102) along the axial direction of the filter cover plates (10), which are arranged opposite to each other and connected to form the accommodation space (1001).

8. The filter assembly according to any one of claims 1 to 3, characterized in that: The filter assembly has a first side and a second side along its own axial direction; the filter assembly comprises a first stacking group, the filter cover plate (10) in the first stacking group is a first filter cover plate (11), the connecting arms (102) of each of the first filter cover plates (11) in the first stacking group are all facing the first side, a plurality of the first filter cover plates (11) are stacked along the axial direction of the filter assembly, and between any two adjacent first filter cover plates (11), the filter portion (101) of one of the first filter cover plates (11) is connected to the connecting arm (102) of another of the first filter cover plates (11); The filter assembly further comprises a second stacking group, wherein the filter cover plates (10) in the second stacking group are second filter cover plates (12); the connecting arms (102) of each of the second filter cover plates (12) in the second stacking group are all oriented toward the second side, and a plurality of the second filter cover plates (12) are stacked axially along the filter assembly, and between any two adjacent second filter cover plates (12), the filter portion (101) of one of the second filter cover plates (12) is connected to the connecting arm (102) of another of the second filter cover plates (12); The first stacking group and the second stacking group are stacked and connected relative to each other.

9. An oil separator, characterized in that: include: The cylinder (200) is provided with an air inlet, an air outlet and an oil return port arranged at intervals along its axial direction; An air inlet pipe (300) is provided through the air inlet and is connected to the cylinder (200); An air outlet pipe (400) is provided through the air outlet and connected to the cylinder (200); An oil return pipe (500) is passed through the oil return port and connected to the cylinder (200); The filter assembly according to any one of claims 1 to 8, wherein the filter assembly is installed in the cylinder (200) through the connecting arm (102), and along the axial direction of the cylinder (200), the filter assembly is located between the ports of the air inlet pipe (300) and the air outlet pipe (400) located in the cylinder (200).

10. The oil separator according to claim 9, characterized in that The height dimension of the filter assembly accounts for 5% to 20% of the height dimension of the cylinder (200).

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