Integrated component of suction sealing plate and oil baffle, compressor and fluid mechanical apparatus

Abstract

An integrated component of a suction sealing plate and an oil baffle, a compressor and a fluid mechanical apparatus. The integrated component is arranged between a rotor and a rotor bearing of a compressor, such that the suction sealing plate fits against a rotor suction end face of a compressor body, and the oil baffle abuts against the rotor bearing. The integrated component comprises a male integrated sub-component and a female integrated sub-component, wherein the male integrated sub-component comprises a male suction sealing plate and a male oil baffle which are joined together by means of a male connecting portion, and the female integrated sub-component comprises a female suction sealing plate and a female oil baffle which are joined together by means of a female connecting portion, the male connecting portion and the female connecting portion being fixed to each other in a fitting manner, such that after assembly, the male suction sealing plate and the female suction sealing plate fit against the rotor suction end face of the compressor body in the same plane. The integrated component can isolate the rotor from the rotor bearing of the compressor, at least partially block the rotor suction end face, and / or ensure that there is refrigeration oil at the rotor bearing.

Description

Intake seal plate and oil baffle assembly, compressor and fluid machinery equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims that the Chinese application with application number 202311779979.2 and application date is December 22, 2023 is based on and claims priority to its application. The entire disclosure of the Chinese application is hereby incorporated by reference into this document. Technical Field

[0003] The present disclosure relates to the field of fluid machinery and equipment, and in particular to an integrated component of an air intake seal plate and an oil baffle plate, a compressor having the integrated component, and a fluid machinery and equipment. The integrated component of the air intake seal plate and the oil baffle plate can be suitable for providing air intake sealing and controllable oil storage for compressors such as screw compressors. Background Art

[0004] In a screw compressor, the suction sealing device is divided into a radial sealing structure and an axial sealing structure. For the axial sealing structure, as shown in FIG1A and FIG1B , the traditional axial sealing structure 10 is a separate part connected to the suction end face 24 of the compressor body 20. Since there is a sharp corner 22 of the compressor body at the intersection line of the two rotor cavities of the compressor body 20, it is necessary to avoid the sharp corner 22 of the body by designing an avoidance hole 12 when designing the axial sealing structure 10 (as shown in FIG1C ). Therefore, there is a gap 30 between the avoidance hole 12 and the compressor body 20, which causes leakage when the compressor is sucked in, resulting in poor suction sealing performance, which affects the reliability of the compressor.

[0005] In addition, in screw compressors, the bearings cannot do without the lubrication and cooling of refrigeration oil. During the working process, there must be enough refrigeration oil around the bearings at all times to ensure the reliable operation of the rotating mechanism (for example, the compressor rotor) where the bearings are located and the compressor as a whole. Especially when the compressor is started for the first time and before starting after a long period of shutdown, the refrigeration oil must be around the bearings in advance to ensure that the bearings are in an "oil-lubricated and cooled" state when they move. However, too much oil will hinder the rotation of the rotor when the rotor rotates at high speed, so that the rotor needs to add additional "refrigeration oil stirring work" in addition to normal work, which is undesirable. In short, the refrigeration oil in the compressor needs to be ensured to be present around the bearings at all times but not too much. Therefore, it is necessary to ensure that there is an appropriate amount of refrigeration oil around the bearings to ensure the reliable and efficient operation of the compressor.

[0006] Summary of the Invention

[0007] One purpose of the present disclosure is to solve the leakage problem caused by incomplete air sealing in existing air sealing devices.

[0008] Another object of the present disclosure is to solve the problem of oil accumulation in the compressor.

[0009] Yet another object of the present disclosure is to solve the problem of oil quantity control in a compressor.

[0010] In view of the state of the prior art, the overall concept of the present disclosure is to integrate an air intake seal plate and an oil baffle plate into an integrated component, which is then positioned between the compressor rotor and the rotor bearing. This allows the air intake seal plate to contact the compressor rotor's air intake end face, while the oil baffle plate abuts the rotor bearing. This ensures reliable sealing of the compressor rotor's air intake end face and / or ensures an appropriate amount of refrigerant oil is present at the rotor bearing. This solves at least one of the aforementioned technical problems.

[0011] In one aspect, the present disclosure provides an integrated component of an air intake sealing plate and an oil baffle plate, wherein the integrated component of the air intake sealing plate and the oil baffle plate is arranged between the rotor and the rotor bearing of the compressor, so that the air intake sealing plate fits the rotor intake end face of the compressor body and the oil baffle plate abuts the rotor bearing. The integrated component of the air intake sealing plate and the oil baffle plate includes a male integrated component and a female integrated component. The male integrated component includes a male air intake sealing plate and a male oil baffle plate combined together by a male connecting portion. The female integrated component includes a female air intake sealing plate and a female oil baffle plate combined together by a female connecting portion. The male connecting portion and the female connecting portion are fixed to each other in a fitting manner, so that after assembly, the male air intake sealing plate and the female air intake sealing plate fit the rotor intake end face of the compressor body in the same plane.

[0012] Because the male and female subassemblies are constructed separately, the male and female suction seals are also separate structures and can be positioned flush against the rotor suction end face, eliminating the need for the avoidance holes of the prior art, thereby preventing leakage at the rotor suction end face. Furthermore, the thus constructed assembly of the suction seal and oil baffle also isolates the compressor rotor from the rotor bearings and at least partially blocks the rotor suction end face through the suction seal, while also allowing the oil baffle to retain refrigerant oil at the rotor bearings.

[0013] In one or more embodiments, the male suction sealing plate and the female suction sealing plate are both arc-shaped plates, and the arc-shaped plates of the male suction sealing plate and the female suction sealing plate are arranged adjacent to each other in the same plane to at least partially block the rotor suction end face. Thus, it is easy to partially block the rotor suction end face of the compressor body by the male suction sealing plate and the female suction sealing plate.

[0014] In one or more embodiments, the male suction seal plate includes a first male arc-shaped portion, and the female suction seal plate includes a first female arc-shaped portion, to match corresponding structures at the sharp corners of the compressor body, thereby ensuring reliable sealing of the compressor.

[0015] In one or more embodiments, the male suction seal plate includes a second male arc-shaped portion having a shape that matches the male rotor shaft, and / or the female suction seal plate includes a second female arc-shaped portion having a shape that matches the female rotor shaft. Thus, the movement of the male and / or female rotor shafts is not interfered with.

[0016] In one or more embodiments, the male suction sealing plate further comprises a planar male engaging surface to snugly abut the male rotor suction end surface, and the female suction sealing plate further comprises a planar female engaging surface to snugly abut the female rotor suction end surface, thereby ensuring reliable sealing of the compressor.

[0017] In one or more embodiments, the male connecting portion and the female connecting portion are each provided with at least one connecting hole, and are detachably fixed together by a connecting piece passing through the connecting hole.

[0018] In one or more embodiments, the connection hole is a threaded hole, and the connection piece is a threaded connection piece, thereby providing a detachably connected male sub-assembly and female sub-assembly.

[0019] In one or more embodiments, the male connection part and the female connection part are fixed together by bonding or welding, thereby providing a permanently connected male sub-assembly and female sub-assembly.

[0020] In one or more embodiments, the male air suction seal plate and the male oil baffle plate are arranged parallel to each other, and the male connecting portion extends vertically between the male air suction seal plate and the male oil baffle plate. Furthermore, the female air suction seal plate and the female oil baffle plate are arranged parallel to each other, and the female connecting portion extends vertically between the female air suction seal plate and the female oil baffle plate. Thus, male and female sub-assemblies are provided that are easy to manufacture.

[0021] In one or more embodiments, the male oil baffle and the female oil baffle are both in the form of a partial ring with a central hole, thereby achieving an oil blocking function for the rotor bearing.

[0022] In one or more embodiments, the male and female oil deflectors each have a first surface that at least partially abuts the compressor block and the outer ring of the corresponding rotor bearing, and a second surface opposite the first surface. Thus, the male and female oil deflectors reliably abut the corresponding rotor bearing to achieve an oil deflection function.

[0023] In one or more embodiments, a recess is provided on the first surface of the male oil baffle and the first surface of the female oil baffle, thereby preventing the male oil baffle and the female oil baffle from abutting against the inner ring of the corresponding rotor bearing and interfering with its operation.

[0024] In one or more embodiments, the diameter of the central holes of the male and female oil deflectors is set to be smaller than or equal to the outer diameter of the inner ring of the corresponding rotor bearing but larger than the diameter of the corresponding rotor shaft. Thus, the central holes do not hinder the movement of the corresponding rotor shaft and can still achieve the oil deflection function.

[0025] In one or more embodiments, both the male and female oil baffles are provided with oil quantity control mechanisms, thereby ensuring that an appropriate amount of refrigeration oil is present at the rotor bearings by utilizing the oil quantity control mechanisms.

[0026] In one or more embodiments, both the male and female oil baffles are equipped with oil quantity control mechanisms. These oil quantity control mechanisms are configured so that the diameter of the central hole of each plate is comparable to the outer diameter of the inner ring of the corresponding bearing. This provides a first method of oil quantity control.

[0027] In one or more embodiments, the oil quantity control mechanism includes an oil control hole for controlling the maximum liquid level of the refrigeration oil, thereby providing a second oil quantity control method.

[0028] In one or more embodiments, the oil control holes of the male and female oil baffles are positioned so that the bottom edge of each oil control hole is equal to or slightly higher than the top edge of the bottom rolling element of the corresponding rotor bearing. Thus, the arrangement of the oil control holes ensures that the amount of refrigerant oil reaches just enough to submerge the bottom rolling element of the rotor bearing, thereby confining an appropriate amount of refrigerant oil.

[0029] In one or more embodiments, the oil control holes of the male and female oil baffles are located on either side of the lowermost rolling element of the corresponding rotor bearing in the horizontal direction, thereby providing possible locations for the oil control holes.

[0030] In one or more embodiments, the horizontal distance between the central axis of the oil control holes of the male and female oil baffles relative to the central axis of the lowermost rolling element of the corresponding rotor bearing is smaller than the radius of the central hole of the corresponding oil baffle, thereby providing possible placement locations for the oil control holes.

[0031] In one or more embodiments, the male suction seal plate and the female suction seal plate are embedded in the compressor body, and the male oil baffle plate and the female oil baffle plate are fixed to the compressor body by fasteners. Thus, the integrated component of the suction seal plate and the oil baffle plate is firmly assembled to the compressor body in a simple manner.

[0032] In another aspect, the present disclosure provides a compressor comprising the integrated component of the air suction sealing plate and the oil baffle plate according to the present disclosure, thereby enabling the compressor to operate reliably and efficiently.

[0033] In another aspect, the present disclosure provides a fluid mechanical device, comprising the compressor according to the present disclosure, thereby enabling the fluid mechanical device to operate reliably and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present disclosure will be more easily understood by the following detailed description in conjunction with the accompanying drawings, in which like reference numerals represent like elements. The drawings are illustrative and non-limiting. The elements in the drawings are not necessarily drawn to scale. For example, elements may be enlarged for illustrative purposes or may be reduced in scale to keep the drawings clear and easy to understand. In the drawings:

[0035] FIG1A schematically shows a front view of an air suction sealing plate of the prior art;

[0036] FIG1B schematically shows a front view of a conventional air intake sealing plate assembled on a compressor;

[0037] FIG1C schematically shows an enlarged view of the portion indicated by A in FIG1B ;

[0038] FIG2A schematically shows a perspective view of an integrated component of an air suction sealing plate and an oil baffle according to the present disclosure;

[0039] FIG2B schematically shows a front view of an integrated component of an air suction sealing plate and an oil baffle according to the present disclosure;

[0040] FIG2C schematically shows a left side view of an integrated component of an air suction sealing plate and an oil baffle according to the present disclosure;

[0041] FIG3A schematically shows a front view of an integrated component of an air suction sealing plate and an oil baffle plate according to the present disclosure assembled in a compressor;

[0042] 3B schematically shows a side cross-sectional view of an integrated assembly of an air suction sealing plate and an oil baffle plate according to the present disclosure assembled in a compressor, taken along a vertical plane passing through the male rotor shaft;

[0043] FIG4A shows a schematic diagram of a first example of an oil quantity control mechanism of an integrated component of an air suction sealing plate and an oil baffle plate according to the present disclosure; and

[0044] FIG4B is a schematic diagram showing a second example of an oil quantity control mechanism of an integrated component of an air suction sealing plate and an oil baffle plate according to the present disclosure. DETAILED DESCRIPTION

[0045] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below. The embodiments described below are intended to make the disclosure of the present disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should be understood that the same reference numerals represent the same elements throughout the drawings.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The terms "including" and "having" and any derivatives thereof in the specification and claims of the present disclosure and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0047] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. are only used to distinguish different objects and should not be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0048] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present disclosure, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0050] In the description of the embodiments of the present disclosure, the terms "inside", "outside", "horizontal", "vertical", "parallel" and "perpendicular" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operate in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present disclosure.

[0051] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, the terms "installation," "assembly," and "connection" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0052] As is known, the sealing plate can play the role of blocking the rotor and the rotor bearing in the screw compressor to prevent the bearing from contacting the rotor suction end face during operation and causing scratches. For this reason, the suction sealing plate provided by the prior art is usually arranged between the compressor rotor and the rotor bearing in the compressor body and partially blocks the rotor suction end face of the compressor body. As shown in Figures 1A-1C, since there is a body sharp corner 22 at the intersection line of the two rotor cavities of the compressor body 20, the suction sealing plate 10 of the prior art is required to avoid the body sharp corner 22. For this reason, the suction sealing plate 10 is usually designed at the lower part with two arcs that converge at the body sharp corner 22. However, when processing the two arcs of the suction sealing plate 10, a tool avoidance space is required at the final convergence point of the two arcs. Usually, an avoidance hole 12 is "dug" upwards, and the diameter of the avoidance hole depends on the diameter of the tool selected when processing the two arcs. In mass production, to improve efficiency, the tool diameter is generally not less than 8mm. Through tool path simulation, it can be determined that the diameter of the avoidance hole needs to be above 5mm. For screw compressors, the clearance values ​​at various locations often need to be controlled at the order of 0.01 to 0.1mm. Therefore, if the clearance caused by machining the avoidance hole is too large, it will cause leakage during the compressor intake, resulting in poor intake sealing performance and affecting the performance of the compressor. For this reason, it is necessary to eliminate the avoidance hole 12.

[0053] In addition, a certain amount of refrigeration oil needs to be present around the rotor bearing of the compressor to ensure that the rotor bearing is in an "oil-lubricated and cooled" state during movement. Therefore, an oil baffle needs to be provided at the rotor bearing to seal a certain amount of refrigeration oil.

[0054] In view of the state of the prior art, the present disclosure envisions integrating the suction sealing plate and the oil baffle into an integrated component, and arranging the integrated component between the compressor rotor and the rotor bearing, thereby not only achieving reliable sealing of the rotor suction end face of the compressor body but also ensuring the presence of a certain amount of refrigerant oil at the rotor bearing.

[0055] The technical solution of the present disclosure is described in detail below through the accompanying drawings and embodiments.

[0056] Figures 2A to 2C schematically illustrate a perspective view, a front view, and a side view, respectively, of an integrated component of an air intake seal plate and an oil baffle plate according to the present disclosure. Figures 3A and 3B schematically illustrate a front view and a side cross-sectional view, respectively, of an integrated component of an air intake seal plate and an oil baffle plate according to the present disclosure assembled in a compressor.

[0057] 2A and 2B , the integrated component 1000 of the air intake seal and the oil baffle includes an oil baffle and an air intake seal integrated into one. The integrated component of the air intake seal and the oil baffle can be used in a compressor such as a screw compressor. The integrated component of the air intake seal and the oil baffle can be arranged between the compressor rotor and the rotor bearing of the compressor body, so that the air intake seal fits the rotor intake end face of the compressor body and the oil baffle is installed on the compressor body against the rotor bearing. Thus, the integrated component of the air intake seal and the oil baffle can block the compressor rotor and the rotor bearing, at least partially block the rotor intake end face of the compressor body and / or ensure that there is refrigerant oil at the rotor bearing. Specifically, the air intake seal is embedded in the housing of the compressor body 20 and fits the rotor intake end face, and the oil baffle is fixed to the compressor body by fasteners (such as screws). Since the suction seal plate does not need to be installed using fasteners and only the oil baffle plate is fixed to the compressor body using fasteners, the integrated component 1000 of the suction seal plate and the oil baffle plate of the present disclosure achieves stable assembly thereof in a simple manner.

[0058] The integrated component 1000 of the suction sealing plate and the oil baffle plate includes a male sub-assembly 100 and a female sub-assembly 200. The male sub-assembly 100 and the female sub-assembly 200 have similar structures. The male sub-assembly 100 and the female sub-assembly 200 are configured to be fixed together in a snug fit. The male sub-assembly 100 includes a male oil baffle 110 and a male suction sealing plate 120 that are combined together by a male connecting portion 130. The female sub-assembly 200 includes a female oil baffle 210 and a female suction sealing plate 220 that are combined together by a female connecting portion 230. The male connecting portion 130 and the female connecting portion 230 are fixed together in a snug fit so that after assembly, the male suction sealing plate 120 and the female suction sealing plate 220 are fitted against the rotor suction end face of the compressor body in the same plane. At this time, the male oil baffle and the female oil baffle can abut the rotor bearing in another plane parallel to the same plane. The male oil baffle 110 and the female oil baffle 210 can be fixed to the compressor body by fasteners (such as multiple screws) respectively (see Figure 3A). In the example of Figures 2A and 2B, the male oil baffle 110 has four connection holes, while the female oil baffle 210 has three connection holes. The male oil baffle 110 and the male suction seal plate 120 can be arranged parallel to each other. The female oil baffle 210 and the female suction seal plate 220 can be arranged parallel to each other. The male connecting portion 130 can be configured to extend vertically between the male suction seal plate 120 and the male oil baffle 110, and the female connecting portion 230 can be configured to extend vertically between the female suction seal plate 220 and the female oil baffle 210. The male connecting portion 130 and the female connecting portion 230 can be detachably connected together by means of a connecting member 300. The connecting member 300 can be a threaded connecting member, such as a screw or a bolt. The male connection portion 130 and the female connection portion 230 may also be bonded or welded together.

[0059] Since the male sub-assembly 100 and the female sub-assembly 200 are constructed separately, the male suction sealing plate 120 and the female suction sealing plate 220 are also separately constructed and can be arranged to fit the rotor suction end face. The avoidance holes required by the tools for processing the integrated suction sealing plates in the prior art are no longer needed, thereby avoiding leakage at the rotor suction end face.

[0060] As shown in Figure 2B, the male suction sealing plate 120 is in the form of an arc-shaped plate. The male suction sealing plate 120 is embedded in the shell of the compressor body and fits with the male rotor suction end face, and the male suction sealing plate 120 is arranged on the inner side of the compressor male rotor shaft to facilitate the male suction sealing plate 120 to partially block the male rotor suction end face of the compressor body 20. In this article, the "inside" of the compressor rotor shaft refers to the side between the adjacent male rotor shaft and the female rotor shaft, and the side opposite to the inside is the outside. The male suction sealing plate 120 includes a first male arc-shaped portion 124 and a second male arc-shaped portion 122. The first male arc-shaped portion 124 is configured to match the corresponding structure at the body corner 22 of the compressor body 20. The arc shape of the second male arc-shaped portion 122 matches the shape of the male rotor shaft so as not to interfere with the movement of the male rotor. The male suction seal plate 120 also includes a planar male engagement surface 126 configured to snugly abut the male rotor suction end surface. The male engagement surface 126 extends parallel to the second surface 114 of the male oil baffle 110 (see FIG. 3B ). The male connecting portion 130 extends perpendicularly from the second surface 114 of the male oil baffle 110 to the male engagement surface 126 of the male suction seal plate 120.

[0061] The male oil baffle 110 is in the form of a partial ring with a central hole. The diameter of the central hole in the male oil baffle 110 can be set to be smaller than or equal to the outer diameter of the inner ring 420 of the male rotor bearing, but larger than the diameter of the male rotor shaft. This prevents the central hole from obstructing the movement of the male rotor shaft and allows the oil to be blocked. Referring to FIG. 3B , the male oil baffle 110 has a first surface 112 that can at least partially abut the compressor block and the outer ring 410 of the male rotor bearing 400, and a second surface 114 opposite the first surface. The first surface 112 of the male oil baffle 110 may also be provided with a recessed portion 116 to prevent abutment with the inner ring 420 of the male rotor bearing, which could interfere with its operation, and to reduce weight.

[0062] Similarly, as shown in Figure 2B, the female suction sealing plate 220 is in the form of an arc-shaped plate. The female suction sealing plate 220 is embedded in the shell of the compressor body and fits with the female rotor suction end face, and the female suction sealing plate 220 is arranged on the inner side of the compressor female rotor shaft, so as to easily realize that the female suction sealing plate 220 partially blocks the female rotor suction end face on the compressor body 20. The female suction sealing plate 220 includes a first female arc-shaped portion 224 and a second female arc-shaped portion 222. The first female arc-shaped portion 224 is configured to match the corresponding structure at the body corner 22 of the compressor body 20. The arc shape of the second female arc-shaped portion 222 matches the shape of the male rotor shaft so as not to interfere with the movement of the female rotor. The female suction sealing plate 220 also includes a planar female joint surface 226, which is configured to fit closely against the female rotor suction end face. The planar male engagement surface 126 and the female engagement surface 226 are arranged adjacent to each other on the same plane and engage with the corresponding rotor suction end surface, thereby sealing at least the rotor suction end surface from the inside. The female engagement surface 226 extends parallel to the second surface of the female oil baffle 210. The female connecting portion 230 extends perpendicularly from the second surface of the female oil baffle 210 to the female engagement surface 226 of the female gas sealing plate 220.

[0063] The female oil baffle 210 is in the form of a partial ring with a central hole. The diameter of the central hole in the female oil baffle 210 can be set to be smaller than or equal to the outer diameter of the inner ring of the female rotor bearing, but larger than the diameter of the female rotor shaft. This ensures that the central hole does not impede the movement of the female rotor shaft and still functions as an oil barrier. The female oil baffle 210 has a first surface that can at least partially abut the compressor block and the outer ring of the female rotor, and a second surface opposite the first surface. The first surface of the female oil baffle 210 can be recessed to prevent contact with the inner ring of the female rotor bearing and interference with its operation, while also reducing weight.

[0064] The male connection part 130 has a relative male inner surface and a male outer surface, and the male inner surface faces the center hole of the male oil baffle 110. The female connection part 230 has a relative female inner surface and a female outer surface, and the female inner surface faces the center hole of the female oil baffle 210. The male outer surface of the male connection part 130 and the female outer surface of the female connection part 230 are in close contact with each other. The male connection part 130 and the female connection part 230 may also be provided with at least one connecting hole for being fastened together by a connector 300. In the example shown in Figures 2A and 2B, the male connection part 130 and the female connection part 230 are each provided with a corresponding threaded hole. The male connection part 130 and the female connection part 230 are fastened together in close contact with each other by means of a threaded connector. After assembly, the male suction sealing plate 120 and the female suction sealing plate 220 are located in the same plane and fit closely against the rotor suction end face. Since the male connection portion 130 and the female connection portion 230 fit together and the first male arc-shaped portion 124 of the male air suction sealing plate 120 and the first female arc-shaped portion 224 of the female air suction sealing plate 220 respectively match the corresponding structures at the sharp corners of the compressor body (see Figure 3A), the male air suction sealing plate 120 and the female air suction sealing plate 220 can be tightly fitted with the compressor body without the need to set the avoidance hole 12 of the prior art. Since there is only a gap generated by the fit between the male connection portion 130 and the female connection portion 230, the gap is on the order of 0.01 to 0.1 mm, which is much smaller than the diameter of the avoidance hole of the prior art of more than 5 mm. Therefore, the leakage area of ​​the gap is significantly smaller than the leakage area of ​​the avoidance hole 12 of the prior art, thereby achieving a better seal on the rotor suction end face.

[0065] The oil baffles can be equipped with an oil volume control mechanism to maintain an appropriate amount of refrigerant oil around the rotor bearings. Specifically, the male and female oil baffles 110 and 210 can be configured to ensure an appropriate amount of refrigerant oil around the rotor bearings by having center holes with appropriately sized diameters. Furthermore, each male and female oil baffles 110 and 210 can be equipped with an oil volume control mechanism, such as an oil control hole, to ensure an appropriate amount of oil.

[0066] The design principles of the male and female oil baffles 110 and 210 are to ensure the presence of refrigerant oil and to control the maximum level of the refrigerant oil. The maximum level should ensure that the refrigerant oil is sufficient to submerge the lowest rolling element of the rotor bearing, and that the liquid level is approximately tangent to the lowest edge of the bearing inner ring.

[0067] To meet this requirement, in one embodiment, the oil level control mechanism can be configured by designing the diameters of the center holes of the male and female oil baffles 110 and 210. As shown in Figure 4A , when the diameter D of the center holes of the male and female oil baffles 110 and 210 is comparable to the outer diameter d of the inner ring of the corresponding bearing, the refrigerant oil level can be controlled. In other words, in this case, the oil level control mechanism can be the center holes of the male and female oil baffles 110 and 210.

[0068] During the actual design process, considering the assembly process, it is difficult to ensure that the diameter D of the center hole of the male and female oil baffles 110 and 210 is equivalent to the outer diameter d of the bearing's inner ring. In this case, to meet the oil quantity control requirements, in another embodiment, the oil quantity control mechanism can be an oil control hole positioned appropriately in the oil baffle. The shape of the oil control hole is not limited to circular; it can be any through-opening shape, as long as it ensures that excess refrigerant oil does not accumulate in the bearing. Specifically, as shown in Figure 4B, the oil quantity control mechanism can include a male oil control hole 118 provided in the male oil baffle 110 and a female oil control hole 218 provided in the female oil baffle 210.

[0069] The following description uses the configuration of the male oil control hole 118 as an example. The female oil control hole 218 can be configured similarly and will not be described in detail. As shown in Figure 4B, the male rotor bearing has a cylindrical roller bearing element 430 located at the bottom. The height of the oil control hole 118 in the male oil baffle 110 can be designed to be relative to the cylindrical roller bearing element 430. The bottom edge of the oil control hole 118 is equal to or slightly higher than the top edge of the cylindrical roller bearing element 430. The oil control hole 118 can be located horizontally on either side of the cylindrical roller bearing element 430. The horizontal distance between the center axis of the oil control hole 118 and the center axis of the cylindrical roller bearing element 430 is less than the radius of the center hole of the male oil baffle 110. This allows the refrigerant oil to submerge the bottom cylindrical roller bearing element, facilitating lubrication and cooling of the compressor's internal bearings. However, the amount of oil is not excessive to prevent rotor rotation from being blocked during high-speed rotation, thus avoiding the need for additional "refrigerant oil stirring work" beyond the normal rotor work.

[0070] Thus, the integrated component of the air suction sealing plate and the oil baffle plate according to the present disclosure ensures that an appropriate amount of refrigeration oil is present at the rotor bearing through the oil control holes provided by the male oil baffle plate 110 and the female oil baffle plate 210 .

[0071] The present disclosure also relates to a compressor comprising an integrated component of the air suction sealing plate and the oil baffle plate according to the present disclosure, thereby enabling the compressor to operate reliably and efficiently.

[0072] The present disclosure also relates to a fluid mechanical device, which includes the above-mentioned compressor. Since the compressor of the present disclosure can improve energy efficiency, the fluid mechanical device of the present disclosure also has the above-mentioned beneficial technical effects.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An integrated component of an air intake sealing plate and an oil baffle plate, wherein the integrated component of the air intake sealing plate and the oil baffle plate is arranged between a rotor and a rotor bearing of a compressor, so that the air intake sealing plate fits against the rotor intake end surface of the compressor body and the oil baffle plate abuts against the rotor bearing, in, The integrated part of the air suction sealing plate and the oil baffle plate comprises: A male sub-assembly, the male sub-assembly comprising a male air suction sealing plate and a male oil baffle plate combined together by a male connecting portion; and A female sub-assembly, wherein the female sub-assembly comprises a female air suction sealing plate and a female oil baffle plate which are combined together through a female connecting portion; The male connection part and the female connection part are fixed to each other in a close fit, so that after assembly, the male suction sealing plate and the female suction sealing plate are in close fit with the rotor suction end surface of the compressor body in the same plane.

2. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 1, wherein: The male suction sealing plate and the female suction sealing plate are both arc-shaped plates, and the arc-shaped plates of the male suction sealing plate and the female suction sealing plate are arranged adjacent to each other in the same plane to at least partially block the rotor suction end face.

3. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 1 or 2, wherein: The male suction sealing plate includes a first male arc-shaped portion, and the female suction sealing plate includes a first female arc-shaped portion to match the corresponding structure at the sharp corner of the compressor body.

4. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 3, wherein: The male air suction sealing plate includes a second male arc-shaped portion whose shape matches the male rotor shaft, and / or the female air suction sealing plate includes a second female arc-shaped portion whose shape matches the female rotor shaft.

5. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 4, wherein: The male suction sealing plate also includes a planar male joint surface to fit against the male rotor suction end surface, and the female suction sealing plate includes a planar female joint surface to fit against the female rotor suction end surface.

6. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 5, wherein: The male connecting part and the female connecting part are each provided with at least one connecting hole, and are detachably fixed together by a connecting piece passing through the connecting hole.

7. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 6, wherein: The connecting hole is a threaded hole, and the connecting piece is a threaded connecting piece.

8. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 5, wherein: The male connecting part and the female connecting part are fixed together by bonding or welding.

9. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 8, wherein: The male air suction sealing plate and the male oil baffle plate are arranged parallel to each other, and the male connecting part extends vertically between the male air suction sealing plate and the male oil baffle plate, and the female air suction sealing plate and the female oil baffle plate are arranged parallel to each other, and the female connecting part extends vertically between the female air suction sealing plate and the female oil baffle plate.

10. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 9, wherein: The male oil baffle plate and the female oil baffle plate are both in the form of a partial ring with a central hole.

11. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 10, wherein: The male oil baffle plate and the female oil baffle plate each have a first surface at least partially abutting against the compressor body and the outer ring of the corresponding rotor bearing and a second surface opposite to the first surface.

12. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 11, wherein: A first surface of the male oil baffle plate and a first surface of the female oil baffle plate are provided with a recessed portion.

13. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 10, wherein: The hole diameters of the central holes of the male oil baffle plate and the female oil baffle plate are set to be smaller than or equal to the outer diameter of the inner ring of the corresponding rotor bearing but larger than the diameter of the corresponding rotor shaft.

14. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 13, wherein: Both the positive oil baffle plate and the negative oil baffle plate are provided with oil quantity control mechanisms.

15. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 10, wherein: The male and female oil baffles are both provided with oil quantity control mechanisms, which are configured such that the diameters of the central holes of the male and female oil baffles are equivalent to the outer diameters of the inner rings of the corresponding bearings.

16. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 14, wherein: The oil quantity control mechanism comprises an oil control hole for controlling the maximum liquid level of the refrigeration oil.

17. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 16, wherein: The oil control holes of the male oil baffle plate and the female oil baffle plate are arranged so that the lowermost edge of the corresponding oil control hole is equal to or slightly higher than the uppermost edge of the lowermost rolling body of the corresponding rotor bearing.

18. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 17, wherein: The oil control holes of the male oil baffle plate and the female oil baffle plate are located on either side relative to the lowest rolling element of the corresponding rotor bearing in the horizontal direction.

19. The integrated component of the air suction sealing plate and the oil baffle plate according to claim 17 or 18, wherein: The horizontal distance between the central axis of the oil control holes of the male and female oil baffle plates and the central axis of the lowest rolling element of the corresponding rotor bearing is smaller than the radius of the central hole of the corresponding oil baffle plate.

20. The integrated component of the air suction sealing plate and the oil baffle plate according to any one of claims 1 to 19, wherein: The male suction sealing plate and the female suction sealing plate are embedded in the compressor body, and the male oil baffle plate and the female oil baffle plate are fixed to the compressor body through fasteners.

21. A compressor, comprising an integrated component of an air suction sealing plate and an oil baffle plate according to any one of claims 1 to 20.

22. A fluid mechanical device, comprising the compressor according to claim 21.

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