Lubricating structure, pump body structure and compressor

Abstract

The utility model provides a lubricating structure, a pump body structure and a compressor, relates to the technical field of compressors, and solves the technical problems that a slip ring is high in stirring power consumption in an oil pool at the bottom of an upper bracket filled with lubricating oil, and a friction surface is abraded due to oil shortage. The lubricating structure comprises a pressure relief oil channel, one end of the pressure relief oil channel is connected with the oil pool at the bottom of the upper support, the other end of the pressure relief oil channel is connected with the supporting face of the upper support, and therefore when the cross-shaped sliding ring horizontally moves, lubricating oil on the extruded side enters the supporting face of the upper support through the pressure relief oil channel. The pressure relief oil duct is additionally arranged in the oil pool at the bottom of the upper support of the scroll compressor, so that the oil stirring phenomenon of the cross slip ring in the oil pool at the bottom of the upper support is relieved, and the oil stirring power of the compressor is reduced; the pressure relief oil duct is connected with the upper support supporting surface, so that the lubricating effect of the movable scroll plate and the upper support supporting surface is enhanced, the friction power of the compressor is reduced, the sliding abrasion of the movable scroll plate and the upper support is reduced, and the reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a lubrication structure, a pump body structure and a compressor. Background Art

[0002] The scroll compressor is a positive displacement compressor. The compression component consists of a moving scroll 2 and a fixed scroll 1. During the compression process, the relative revolution of the moving and fixed scrolls is used to form a continuous change in the closed volume to achieve the purpose of compressing the gas. Figure 1 As shown, in order to realize the orbital motion, the movable scroll 2 needs to be provided with a special anti-rotation mechanism. In the conventional structure, a cross ring 3 is installed between the movable scroll 2 and the upper bracket 4. The installation of the cross ring 3 and the upper bracket 4 only allows translational displacement, which is driven by the crankshaft 5. When the cross ring 3 and the upper bracket 4 make translational displacement, the stirring of the cross ring 3 in the oil pool 40 at the bottom of the upper bracket filled with lubricating oil on the upper bracket 4 has large resistance, high power and high power consumption.

[0003] In addition, the bottom of the movable scroll 2 is in contact with the upper bracket support surface 43. When the compressor is running, the bottom surface of the movable scroll 2 and the upper bracket support surface 43 slide and rub. When the lubricating oil does not fill the oil pool 40 at the bottom of the upper bracket, the sliding friction surface between the movable scroll 2 and the upper bracket support surface 43 will be short of oil, which will eventually lead to dry friction, increase power and cause wear. Utility Model Content

[0004] The utility model aims to provide a lubrication structure, a pump body structure and a compressor to solve the technical problems in the prior art that the slip ring consumes high power when stirring in the oil pool at the bottom of the upper bracket filled with lubricating oil, and the friction surface is worn due to lack of oil.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a lubrication structure, comprising:

[0007] The oil pool at the bottom of the upper bracket is relatively arranged inside the upper bracket and contains lubricating oil. The convex key of the cross ring extends into the oil pool at the bottom of the upper bracket, and the cross ring can move horizontally along the extension direction of the oil pool at the bottom of the upper bracket.

[0008] The upper bracket supporting surface is in contact with the bottom of the movable scroll to form contact sliding friction between the two;

[0009] The pressure relief oil passage has one end connected to the oil pool at the bottom of the upper bracket and the other end connected to the support surface of the upper bracket, so that when the cross slip ring moves horizontally, the lubricating oil on the squeezed side can enter the support surface of the upper bracket through the pressure relief oil passage.

[0010] The utility model adopts a method of adding a pressure relief oil channel in the oil pool (slip ring groove) at the bottom of the upper bracket of the scroll compressor, thereby alleviating the oil stirring phenomenon of the cross slip ring in the oil pool at the bottom of the upper bracket and reducing the oil stirring power of the compressor; the pressure relief oil channel is connected to the supporting surface of the upper bracket, thereby enhancing the lubrication effect of the movable scroll plate and the supporting surface of the upper bracket, reducing the friction power of the compressor, reducing the sliding wear of the movable scroll plate and the upper bracket, and improving reliability.

[0011] As a further optional embodiment of the utility model, the number of the pressure relief oil channel is one, including a first horizontal section, a second horizontal section and a vertical section. The number of the first horizontal section is one, and the starting end is connected to the side wall of the oil pool at the bottom of the upper bracket; the number of the vertical sections and the second horizontal sections are both multiple, and each of the vertical sections is arranged at a different upper bracket support surface, with the bottom located below the upper bracket support surface and the top extending to the upper bracket support surface; one end of each of the second horizontal sections is connected to the first horizontal section, and the other end is connected to each of the vertical sections.

[0012] As a further optional embodiment of the utility model, the number of the pressure relief oil passages is more than two, the starting ends of all the pressure relief oil passages are respectively located at different positions of the oil pool at the bottom of the upper bracket, and the ends of all the pressure relief oil passages are respectively located on different supporting surfaces of the upper bracket.

[0013] As a further optional mode of the utility model, each of the pressure relief oil passages includes a horizontal section and a vertical section, wherein:

[0014] One end of the horizontal section is connected to the side wall of the oil pool at the bottom of the upper bracket, and the other end is connected to the bottom of the vertical section;

[0015] The bottom of the vertical section is located below the support surface of the upper bracket, and the top of the vertical section extends to the support surface of the upper bracket.

[0016] As a further optional embodiment of the present invention, the pressure relief oil passage is an integral equal-diameter passage, or the pressure relief oil passage is a variable-diameter structure with a thicker front and a thinner rear.

[0017] As a further optional embodiment of the present invention, the top of the vertical section is located in the middle or at both ends of the support surface of the upper bracket.

[0018] As a further optional embodiment of the present invention, the corners of the pressure relief oil passages are all arc transition structures.

[0019] As a further optional embodiment of the present invention, the pressure relief oil passage is arranged in a mirror-symmetrical manner.

[0020] In a second aspect, the utility model provides a pump body structure, including a movable scroll, a fixed scroll, an upper bracket, a cross ring, a crankshaft and the lubrication structure; wherein:

[0021] The crankshaft is drivingly connected to the movable scroll;

[0022] The upper bracket is sleeved on the outer side of the crankshaft and is in contact and connected with the movable scroll through the upper bracket support surface;

[0023] The cross ring is arranged between the upper bracket and the movable scroll;

[0024] The fixed scroll is located at the top of the upper bracket;

[0025] The lubrication structure is arranged between the oil pool at the bottom of the upper bracket and the supporting surface of the upper bracket.

[0026] The pump body structure of the utility model optimizes the lubrication of the movable scroll plate of the scroll compressor and the supporting surface of the upper bracket, alleviates the oil stirring effect of the cross slip ring in the oil pool at the bottom of the upper bracket, reduces the power of the compressor, improves energy efficiency, and enhances reliability.

[0027] In a third aspect, the utility model provides a compressor, which is a scroll compressor, comprising the pump body structure.

[0028] The scroll compressor provided by the utility model adopts a pressure relief oil channel added in the oil pool at the bottom of the upper bracket of the scroll compressor, which alleviates the oil stirring phenomenon of the cross slip ring in the oil pool at the bottom of the upper bracket and reduces the oil stirring power of the compressor; the pressure relief oil channel is connected with the supporting surface of the upper bracket, which enhances the lubrication effect of the movable scroll plate and the supporting surface of the upper bracket, reduces the friction power of the compressor, reduces the sliding wear between the movable scroll plate and the upper bracket, and improves reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic cross-sectional diagram of the structure assembly of a scroll compressor pump body in the prior art;

[0031] Figure 2 It is a schematic diagram of the assembly cross section of the scroll compressor pump body structure of the utility model;

[0032] Figure 3 It is a structural schematic diagram of an embodiment of the lubrication structure of the utility model;

[0033] Figure 4It is a structural schematic diagram of an embodiment of an upper bracket in a pump body structure of a scroll compressor of the utility model;

[0034] Figure 5 It is a structural schematic diagram of another embodiment of an upper bracket in a pump body structure of a scroll compressor of the utility model.

[0035] In the figure, 1, fixed scroll; 2, movable scroll; 3, cross ring; 4, upper bracket; 5, crankshaft; 40, oil pool at the bottom of the upper bracket; 41, pressure relief oil passage at the outer side of the oil pool at the bottom of the upper bracket; 42, pressure relief oil passage at the inner side of the oil pool at the bottom of the upper bracket; 43, upper bracket supporting surface; 44, upper oil pool at the top of the upper bracket. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0037] Embodiment 1:

[0038] like Figure 1 As shown, the pump body structure of the existing scroll compressor is mainly composed of a movable scroll plate 2, a fixed scroll plate 1, a cross ring 3, an upper bracket 4, a crankshaft 5, etc.; the lower end convex key of the cross ring 3 is installed in the oil pool 40 at the bottom of the upper bracket. When the compressor is working, the oil will fill the oil pool 40 at the bottom of the upper bracket. The left and right sliding of the cross ring 3 will stir the oil pool. When the cross ring 3 moves to the limit position, the local compression of the oil generates resistance, which deteriorates the reliability and power. In order to solve the problem that when the cross ring 3 moves horizontally left and right along the upper bracket 4, its convex key is located in the oil pool 40 at the bottom of the upper bracket, The cross ring 3 stirs the oil, causing the problem of high compressor power. The utility model provides a lubrication structure. Through the lubrication structure, when the cross ring 3 slides left and right, the oil in the oil pool 40 at the bottom of the upper bracket will be compressed. By increasing the pressure relief oil channel, the oil with increased pressure can be discharged to the low-pressure area to reduce the oil pressure, that is, reduce the sliding resistance of the cross ring 3, thereby not only reducing the compressor oil stirring power, but also enhancing the lubrication effect of the movable scroll and the upper bracket support surface, reducing the compressor friction power, reducing the sliding wear of the movable scroll and the upper bracket, and improving reliability.

[0039] like Figure 2 As shown, specifically, in this embodiment, the lubrication structure includes:

[0040] The oil pools 40 at the bottom of the upper bracket are two in number and are arranged relatively inside the upper bracket 4. Lubricating oil is stored inside. The convex key of the cross ring 3 extends into the oil pool 40 at the bottom of the upper bracket. The cross ring 3 can move horizontally along the extension direction of the oil pool 40 at the bottom of the upper bracket.

[0041] Furthermore, a portion of the upper bracket bottom oil pool 40 is formed by being recessed from the bottom of the upper bracket upper oil pool 44, and another portion is formed by being recessed from the gap between adjacent upper bracket support surfaces 43; the extension direction of the upper bracket bottom oil pool 40 is the radial direction of the upper bracket 4;

[0042] The upper bracket support surface 43 is in contact with the bottom of the movable scroll 2 to form a contact sliding friction between the two; specifically, Figure 4 As shown, in the pump body structure of the compressor, a plurality of upper bracket support surfaces 43 are arranged in a circle inside the upper bracket 4, and gaps are left between adjacent upper bracket support surfaces 43, such as Figure 3 As shown, in this embodiment, the number of the upper bracket support surfaces 43 is eight and they are symmetrically arranged; the number of the convex keys of the cross ring 3 is two, which are respectively inserted into the oil pools 40 at the bottom of the upper bracket which are arranged oppositely;

[0043] like Figure 3 As shown, the pressure relief oil passage is connected to the oil pool 40 at the bottom of the upper bracket at one end and to the upper bracket support surface 43 at the other end, so that when the cross slip ring 3 moves horizontally, the lubricating oil on the squeezed side enters the upper bracket support surface 43 through the pressure relief oil passage.

[0044] The utility model adopts a method of adding a pressure relief oil channel in the oil pool (slip ring groove) at the bottom of the upper bracket of the scroll compressor, thereby alleviating the oil stirring phenomenon of the cross slip ring in the oil pool at the bottom of the upper bracket and reducing the oil stirring power of the compressor; the pressure relief oil channel is connected to the supporting surface of the upper bracket, thereby enhancing the lubrication effect of the movable scroll plate and the supporting surface of the upper bracket, reducing the friction power of the compressor, reducing the sliding wear of the movable scroll plate and the upper bracket, and improving reliability.

[0045] It should be noted here that since there are two oil pools 40 at the bottom of the upper bracket in the utility model, which are symmetrically arranged, and the number of upper bracket support surfaces 43 is also an even number, which are symmetrically arranged, in the subsequent description, the structure and layout of the pressure relief oil channel are specifically explained using the oil pool 40 at the bottom of the upper bracket on one side as an example, and the pressure relief oil channel corresponding to the oil pool 40 at the bottom of the upper bracket on the other side is a mirror-symmetrical structure with the pressure relief oil channel on one side, and will not be repeatedly introduced.

[0046] In this embodiment, the pressure relief oil passage only needs to be able to guide the compressed oil in the oil pool 40 at the bottom of the upper bracket to the upper bracket support surface 43, so as to reduce the pressure and movement resistance while reducing the friction resistance between the movable scroll 2 and the upper bracket support surface 43. The specific structure is not limited.

[0047] Embodiment 2:

[0048] The difference between the second embodiment and the first embodiment is that, in the present embodiment, the pressure relief oil passage is specifically defined. In the present embodiment, as an optional implementation of the present invention, the number of the pressure relief oil passage is one. It should be noted that the number of the pressure relief oil passage is one, which means that there is one pressure relief oil passage connected to the bottom oil pool 40 of one of the upper brackets, and the bottom oil pool 40 of the upper bracket on the other side is a mirror structure, and a pressure relief oil passage is also connected thereto. Since both sides are mirror structures, only one side is taken as an example for specific description. Specifically, the pressure relief oil passage includes a first horizontal section, a second horizontal section and a vertical section. The number of the first horizontal section is one, and the starting end is connected to the side wall of the bottom oil pool 40 of the upper bracket, and the end extends to the vicinity of the upper bracket support surface 43 near the bottom oil pool 40 of the other upper bracket. Through this structural setting, half of all the upper bracket support surfaces 43 can be supplied with oil through one pressure relief oil passage, and the other half of the upper bracket support surfaces 43 are supplied with oil by the pressure relief oil passage connected to the bottom oil pool 40 of the other upper bracket.

[0049] Furthermore, there are multiple vertical sections and second horizontal sections. Specifically, the number of vertical sections and second horizontal sections is half of the total number of upper bracket support surfaces 43. Each vertical section is arranged one by one at different upper bracket support surfaces 43. Specifically, the bottom of the vertical section is located below the upper bracket support surface 43, and the top extends to the upper bracket support surface 43. The vertical section extends to the upper bracket support surface 43, so that the lubricating oil in the oil pool 40 at the bottom of the upper bracket can be introduced into the upper bracket support surface 43 to overcome the problem of high friction resistance caused by less oil on the support surface; one end of each second horizontal section is connected to the first horizontal section, and the other end is connected to each vertical section respectively.

[0050] Through the above structural arrangement, the oil stirring phenomenon of the cross slip ring in the oil pool of the upper bracket is alleviated, and the oil stirring power of the compressor is reduced; the pressure relief oil channel is connected to the supporting surface of the movable disk of the upper bracket, which enhances the lubrication effect of the movable scroll and the supporting surface of the upper bracket, reduces the friction power of the compressor, reduces the sliding wear of the movable scroll and the upper bracket, and improves reliability; and by setting a first horizontal section and then extending it to half of the upper bracket supporting surface 43, the grooving length can be reduced, the processing process is simplified, and the processing cost is reduced.

[0051] Embodiment 3:

[0052] The difference between Example 3 and Example 2 is that in this example, the pressure relief oil passage has a different structure from that in Example 2. Specifically, in this example, the number of the pressure relief oil passages is not one, but more than two, the starting ends of all the pressure relief oil passages are respectively located at different positions of the oil pool at the bottom of the upper bracket, and the ends of all the pressure relief oil passages are respectively located on different upper bracket support surfaces.

[0053] Specifically, Figure 4 As shown, a schematic diagram of the structure of four pressure relief oil passages is shown in the oil pool 40 at the bottom of each upper bracket. The four pressure relief oil passages are symmetrical mirror structures with respect to the corresponding oil pool 40 at the bottom of the upper bracket.

[0054] like Figure 5 As shown, it is a structural schematic diagram of another embodiment of the utility model. In this embodiment, the number of upper bracket support surfaces 43 is four. Compared with the scheme of setting eight upper bracket support surfaces 43, in this embodiment, the length of each upper bracket support surface 43 is large, and the four upper bracket support surfaces 43 are arranged in a full circle along the axis of the upper bracket 4, and there is a gap between adjacent support surfaces; when four upper bracket support surfaces 43 are used, the number of pressure relief oil passages connected to the bottom oil pool 40 of one of the upper brackets is two, and the number of pressure relief oil passages connected to the bottom oil pool 40 of the other upper bracket is also two, that is, a total of four pressure relief oil passages, and the four pressure relief oil passages are symmetrically arranged about the central symmetry line between the two upper bracket bottom oil pools 40.

[0055] Since the pressure relief oil channel is a symmetrical mirror structure or a symmetrical structure, the following Figure 4 The two pressure relief oil passages on the side shown, and Figure 5 The two pressure relief oil passages on both sides shown in the figure are used as an example for specific description. Figure 4 and Figure 5 As shown, the two pressure relief oil passages located on one side of an upper bracket bottom oil pool 40 and the two pressure relief oil passages located on both sides of an upper bracket bottom oil pool 40 are respectively the upper bracket bottom oil pool inner pressure relief oil passage 42 and the upper bracket bottom oil pool outer pressure relief oil passage 41, and each of the upper bracket bottom oil pool inner pressure relief oil passage 42 or the upper bracket bottom oil pool outer pressure relief oil passage 41 includes a horizontal section and a vertical section, wherein:

[0056] One end of the horizontal section is connected to the side wall of the oil pool 40 at the bottom of the upper bracket, and the other end is connected to the bottom of the vertical section;

[0057] The bottom of the vertical section is located below the upper bracket support surface 43 , and the top of the vertical section extends onto the upper bracket support surface 43 .

[0058] The utility model optimizes the scroll compressor pump body structure, on the basis of the unchanged and conventional structure of the main parts, adds a pressure relief oil channel 42 on the inner side of the oil pool at the bottom of the upper bracket and a pressure relief oil channel 41 on the outer side of the oil pool at the bottom of the upper bracket to the oil pool 40 at the bottom of the upper bracket, and lifts the oil in the bottom oil pool to the upper bracket support surface 43 by the left and right movement of the cross slip ring 3, which not only alleviates the oil stirring phenomenon of the cross slip ring 3 in the oil pool at the bottom of the upper bracket 40, and reduces the oil stirring power of the compressor; and the pressure relief oil channel is connected with the upper bracket support surface 43, thereby enhancing the lubrication effect of the movable scroll plate 2 and the upper bracket support surface 43, reducing the friction power of the compressor, reducing the sliding wear between the movable scroll plate and the upper bracket, and improving reliability.

[0059] Embodiment 4:

[0060] The only difference between Example 4 and Example 3 is that in this example, the diameter of the pressure relief oil passage is specifically limited. In this example, the pressure relief oil passage is an integral equal-diameter passage, that is, the diameter of the pressure relief oil passage is the same from the starting end to the end end, and the cross-section of the pressure relief oil passage is circular. This structural form can facilitate processing.

[0061] Of course, as another optional implementation of the present invention, the pressure relief oil channel can also be a unequal diameter structure. For example, it can be set to a variable diameter structure with a thick front and a thin rear. At this time, the cross-section of the pressure relief oil channel can also be circular. Although this structure increases the difficulty of processing and the procedures are more complicated, since the front end is a thick channel, it can facilitate the outflow of a large amount of lubricating oil, and the rear section is a thin diameter structure, which not only increases the lubricating oil on the supporting surface and improves the lubrication effect, but also has a certain pressurization effect when the lubricating oil is sprayed, thereby better improving the ability of the lubricating oil to diffuse to different areas of the supporting surface.

[0062] It should be noted here that the top of the vertical section is located at both ends of the upper bracket support surface 43. Through this structure, the lubricating oil flows from one side to the other side; however, this design structure has certain defects, that is, it takes a long time for the lubricating oil to diffuse to the other end of the support surface, which can easily cause the lubrication effect to be good at one end and poor at the other end. Therefore, as an optimal implementation method of the present invention, the top of the vertical section is located in the middle of the upper bracket support surface. By being set in the middle, the lubricating oil can diffuse to the surroundings when entering the support surface, thereby improving the diffusion efficiency.

[0063] Furthermore, in order to reduce the flow resistance, the corners of the pressure relief oil channel are all arc transition structures, and of course a right-angle structure can also be used.

[0064] Embodiment 5:

[0065] In this embodiment, the utility model provides a pump body structure, including a movable scroll 2, a fixed scroll 1, an upper bracket 4, a cross ring 3, a crankshaft 5 and any one of the lubrication structures in Embodiments 1 to 4; wherein:

[0066] The crankshaft 5 is drivingly connected to the movable scroll 2;

[0067] The upper bracket 4 is sleeved on the outer side of the crankshaft 5 and is in contact and connected with the movable scroll 2 through the upper bracket support surface 43;

[0068] The cross slip ring 3 is arranged between the upper bracket 4 and the movable scroll 2;

[0069] The fixed scroll plate 1 is located at the top of the upper bracket 4; it should be noted that the above structures are all structures in the prior art, and the present utility model does not make any improvements to this part, so it will not be described in detail;

[0070] The lubrication structure is arranged between the oil pool 40 at the bottom of the upper bracket and the upper bracket support surface 43 .

[0071] The pump body structure of the utility model optimizes the lubrication of the movable scroll plate of the scroll compressor and the supporting surface of the upper bracket, alleviates the oil stirring effect of the cross slip ring in the oil pool at the bottom of the upper bracket, reduces the power of the compressor, improves energy efficiency, and enhances reliability.

[0072] Embodiment 6:

[0073] In this embodiment, a compressor provided by the utility model is a scroll compressor, which includes the pump body structure in Example 5.

[0074] The scroll compressor provided by the utility model adopts a pressure relief oil channel added in the oil pool at the bottom of the upper bracket of the scroll compressor, which alleviates the oil stirring phenomenon of the cross slip ring in the oil pool at the bottom of the upper bracket and reduces the oil stirring power of the compressor; the pressure relief oil channel is connected with the supporting surface of the upper bracket, which enhances the lubrication effect of the movable scroll plate and the supporting surface of the upper bracket, reduces the friction power of the compressor, reduces the sliding wear between the movable scroll plate and the upper bracket, and improves reliability.

[0075] Further, such as Figure 4 and Figure 5 As shown, the inner and outer sides of the oil pool 40 at the bottom of the upper bracket are provided with pressure relief oil passages (starting points of the pressure relief oil passages 41 at the outer side of the oil pool at the bottom of the upper bracket and the pressure relief oil passages 42 at the inner side of the oil pool at the bottom of the upper bracket), and the pressure relief oil passages pass through the interior of the upper bracket and are connected to the upper bracket support surface 43 (end points of the pressure relief oil passages 41 at the outer side of the oil pool at the bottom of the upper bracket and the pressure relief oil passages 42 at the inner side of the oil pool at the bottom of the upper bracket). It should be noted that the inner and outer sides referred to here are relative to the center axis of the upper bracket 4 and the outer edge of the upper bracket 4, the side close to the center axis is the inner side, and the side close to the outer edge of the upper bracket 4 is the outer side.

[0076] When the compressor is running, the cross slip ring 3 performs periodic translation in the oil pool 40 at the bottom of the upper bracket. Figure 3 When the position moves to the left, the left oil in the oil pool 40 at the bottom of the two upper brackets is compressed. As the cross slip ring 3 moves to the left, the left oil in the oil pool 40 at the bottom of the left upper bracket and the left oil in the oil pool 40 at the bottom of the right upper bracket are compressed, resulting in increased pressure. The high-pressure oil flows through the pressure relief oil channel on the high-pressure side (corresponding to Figure 3 The outer pressure relief oil passage 41 of the left upper bracket bottom oil pool and the inner pressure relief oil passage 42 of the right upper bracket bottom oil pool) are directed to the upper bracket support surface 43, and the diversion and pressure relief of the oil pressure in the bottom oil pool reduces the flow resistance of the Cross ring 3 in the bottom oil pool 40 of the upper bracket, and reduces the oil stirring power loss of the Cross ring 3; at the same time, since the high-pressure oil flows out from the upper bracket support surface 43, the lubrication of the movable scroll 2 and the upper bracket support surface 43 is enhanced, the friction power loss of the compressor movable scroll is reduced, the sliding wear between the movable scroll and the upper bracket is reduced, and the reliability is improved.

[0077] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0078] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] 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 the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect 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.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0083] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A lubrication structure, characterized in that: include: The oil pool at the bottom of the upper bracket is relatively arranged inside the upper bracket and contains lubricating oil. The convex key of the cross ring extends into the oil pool at the bottom of the upper bracket, and the cross ring can move horizontally along the extension direction of the oil pool at the bottom of the upper bracket. The upper bracket supporting surface is in contact with the bottom of the movable scroll to form contact sliding friction between the two; The pressure relief oil passage has one end connected to the oil pool at the bottom of the upper bracket and the other end connected to the support surface of the upper bracket, so that when the cross slip ring moves horizontally, the lubricating oil on the squeezed side can enter the support surface of the upper bracket through the pressure relief oil passage.

2. The lubrication structure according to claim 1, characterized in that: The number of the pressure relief oil channel is one, including a first horizontal section, a second horizontal section and a vertical section. The number of the first horizontal section is one, and the starting end is connected to the side wall of the oil pool at the bottom of the upper bracket; the number of the vertical sections and the second horizontal sections are both multiple, and each of the vertical sections is arranged at a different upper bracket support surface, with the bottom located below the upper bracket support surface and the top extending to the upper bracket support surface; one end of each of the second horizontal sections is connected to the first horizontal section, and the other end is connected to each of the vertical sections.

3. The lubrication structure according to claim 1, characterized in that: The number of the pressure relief oil passages is more than two, the starting ends of all the pressure relief oil passages are respectively located at different positions of the oil pool at the bottom of the upper bracket, and the ends of all the pressure relief oil passages are respectively located at different supporting surfaces of the upper bracket.

4. The lubrication structure according to claim 3, characterized in that: Each of the pressure relief oil passages comprises a horizontal section and a vertical section, wherein: One end of the horizontal section is connected to the side wall of the oil pool at the bottom of the upper bracket, and the other end is connected to the bottom of the vertical section; The bottom of the vertical section is located below the support surface of the upper bracket, and the top of the vertical section extends to the support surface of the upper bracket.

5. The lubrication structure according to claim 1, characterized in that: The pressure relief oil passage is an integral equal-diameter passage, or the pressure relief oil passage is a variable-diameter structure with a thicker front and a thinner rear.

6. The lubrication structure according to claim 2 or 4, characterized in that: The top of the vertical section is located in the middle or at both ends of the supporting surface of the upper bracket.

7. The lubrication structure according to claim 1, characterized in that: The corners of the pressure relief oil passages are all arc transition structures.

8. The lubrication structure according to claim 1, characterized in that: The pressure relief oil passages are arranged in a mirror-symmetrical manner.

9. A pump structure, characterized in that: It comprises a movable scroll, a fixed scroll, an upper bracket, a cross ring, a crankshaft and a lubrication structure as claimed in any one of claims 1 to 8; wherein: The crankshaft is drivingly connected to the movable scroll; The upper bracket is sleeved on the outer side of the crankshaft and is in contact and connected with the movable scroll through the upper bracket support surface; The cross ring is arranged between the upper bracket and the movable scroll; The fixed scroll is located at the top of the upper bracket; The lubrication structure is arranged between the oil pool at the bottom of the upper bracket and the supporting surface of the upper bracket.

10. A compressor, characterized in that: The invention is a scroll compressor, comprising the pump body structure as claimed in claim 9.

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