A compressor front cover assembly and compressor

Abstract

The present application relates to the compressor field, specifically to a kind of compressor front cover assembly and compressor;Front cover is formed with exhaust cavity and the air inlet hole and exhaust port of exhaust cavity;Oil distribution pipe includes gas outlet end and gas inlet end, the outer circumferential surface of oil distribution pipe includes fixed section close to gas outlet end and oil distribution section close to gas inlet end;Oil distribution pipe is set in exhaust cavity through fixed section and gas outlet end is towards exhaust port;The outer wall of oil distribution section and the inner wall between exhaust cavity form oil distribution loop, and air inlet hole is communicated with oil distribution loop;Oil storage cavity, formed below exhaust cavity;Barrier block, formed between oil storage cavity and exhaust cavity, barrier block is formed with the communication hole between exhaust cavity and oil storage cavity, and the inlet of communication hole is communicated with exhaust cavity;The caliber of the inlet of communication hole is less than the diameter of exhaust cavity to solve the technical problem that separated lubricating oil is carried out again by gas and flows out of compressor after entering oil storage cavity, and the oil discharge rate of compressor is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the compressor field, in particular to a compressor front cover assembly and a compressor. BACKGROUND

[0002] The oil discharge rate of the compressor of the air conditioner directly affects the working performance of the compressor. If the oil discharge rate of the compressor is relatively high, the oil return effect of the compressor is poor, and even impurities are discharged during work, which affects the heat exchange capacity of the evaporator and the condenser, and further reduces the heat exchange effect of the air conditioner. When the oil return effect is low, the compressor will also be over-worn. Therefore, it is particularly important to reduce the oil discharge rate of the compressor, reduce the oil content of the system, and ensure the full lubrication of the compressor.

[0003] After the high-pressure refrigerant enters from the end cover air inlet, it will collide with the oil separation pipe. A small part of the lubricating oil in the refrigerant is separated due to the collision with the oil separation pipe and flows downward along the outer wall of the oil separation pipe. When reaching the bottom end of the oil separation pipe, the lubricating oil will be swept away by the high-speed refrigerant and discharged from the compressor, resulting in high oil discharge rate of the compressor.

[0004] To solve the problem that the lubricating oil at the bottom of the exhaust cavity is swept away by the high-pressure refrigerant again, in the prior art, an oil storage cavity is arranged at the bottom of the exhaust cavity. The separated lubricating oil enters the oil storage cavity, reducing the agitation of the high-pressure refrigerant to the separated lubricating oil. However, a channel for the flow of lubricating oil is arranged between the exhaust cavity and the oil storage cavity. The high-pressure refrigerant still enters the oil storage cavity along the channel and agitates the lubricating oil in the oil storage cavity. When the gas agitates the lubricating oil in the cavity and then flows out of the oil storage cavity, it still sweeps up the lubricating oil in the bottom oil storage cavity, so that the effect of reducing the oil discharge rate of the compressor is not ideal.

[0005] At present, there is no good solution to the above technical problems. SUMMARY

[0006] To solve the technical problem that the separated lubricating oil enters the oil storage cavity and is carried out of the compressor by gas again, resulting in high oil discharge rate of the compressor, the present application provides a compressor front cover assembly and a compressor.

[0007] In one aspect, the present application provides a compressor front cover assembly, comprising:

[0008] A front cover, an exhaust cavity, an air inlet hole and an exhaust port of the exhaust cavity are formed in the front cover;

[0009] An oil separation pipe, the oil separation pipe comprises an air outlet end and an air inlet end, the oil separation pipe is arranged in the exhaust cavity in the up-down direction and the air outlet end faces the exhaust port;

[0010] An oil storage cavity is formed below the exhaust cavity;

[0011] A barrier block is formed between the oil storage cavity and the exhaust cavity, and a communication hole is formed in the barrier block to communicate between the exhaust cavity and the oil storage cavity, and the inlet of the communication hole communicates with the exhaust cavity; the diameter of the inlet of the communication hole is smaller than the diameter of the exhaust cavity.

[0012] Preferably, the inlet of the communication hole is arranged eccentrically relative to the oil separation pipe.

[0013] Preferably, the communication hole comprises a first inclined hole, and the outlet of the first inclined hole communicates with the oil storage cavity.

[0014] The downward rotation direction of the gas entering the exhaust cavity from the gas inlet hole is opposite to the downward inclined direction of the first inclined hole.

[0015] Preferably, the communication hole further comprises a second inclined hole, and the downward inclined direction of the second inclined hole is opposite to the downward inclined direction of the first inclined hole.

[0016] The second inclined hole is located above the first inclined hole, the inlet of the second inclined hole communicates with the oil separation cavity, and the outlet of the second inclined hole communicates with the inlet of the first inclined hole.

[0017] Preferably, an oil separation cover is arranged in the oil separation pipe, and the oil separation cover is arranged at the gas outlet end.

[0018] Preferably, the gas outlet end is formed with a first oil discharge flow path, and the inner wall of the exhaust cavity is formed with a second oil discharge flow path, and the lubricating oil separated by the oil separation cover can flow into the communication hole in sequence under the action of gravity through the first oil discharge flow path and the second oil discharge flow path.

[0019] Preferably, the inner wall of the gas outlet end is formed with a stepped structure, the stepped structure comprises a first wall surface, a second wall surface and a step surface connecting the first wall surface and the second wall surface, and the first wall surface is connected with the end surface of the gas outlet end; the second wall surface is located on the inner side of the step surface, and the first wall surface is located on the outer side of the step surface.

[0020] The oil separation cover comprises an annular block, the annular block is formed with an outer peripheral wall, the axial lower part of the outer peripheral wall is sealingly connected with the second wall surface, a first groove is formed between the axial upper part of the outer peripheral wall, the step surface and the first wall surface, the gas outlet end is formed with a first oil discharge hole, one end of the first oil discharge hole opens into the first groove, and the other end of the first oil discharge hole opens into the second oil discharge flow path; the first oil discharge flow path comprises the first groove and the first oil discharge hole.

[0021] Preferably, the inner wall of the exhaust cavity is formed with a second groove, one end of the second groove being communicated with the first oil outlet hole and the other end being communicated with the communicating hole.

[0022] Preferably, the oil separation cover comprises an annular block, the outer peripheral wall of the annular block being sealingly connected with the inner wall of the air outlet end, an oil receiving ring being arranged below the annular block, the outer peripheral wall surface of the oil receiving ring being fitted with the inner wall surface of the oil separation pipe, the oil receiving ring being formed with an oil receiving groove with an opening facing upward, and the separated lubricating oil in the oil separation cover being able to flow along the inner wall of the annular block into the oil receiving groove.

[0023] The oil receiving groove is provided with an oil discharge hole, and the oil separation pipe is provided with a second oil outlet hole, the second oil outlet hole being communicated with the oil discharge hole.

[0024] The inner wall of the exhaust cavity is formed with a third groove, one end of the third groove being communicated with the second oil outlet hole and the other end being communicated with the communicating hole.

[0025] In a second aspect, the present application provides a compressor comprising the compressor front cover assembly.

[0026] Preferably, the compressor is a scroll compressor, the scroll compressor comprising a stationary disc, the stationary disc being formed with a first mating surface, the front cover being formed with a second mating surface, and the first mating surface being sealingly connected with the second mating surface.

[0027] The first mating surface is recessed to form an oil storage groove, the oil storage cavity extending towards the stationary disc to the second mating surface, and the oil storage cavity being communicated with the oil storage groove.

[0028] The present application sets a blocking block between the exhaust cavity and the oil storage cavity, forms a communicating hole on the blocking block, and makes the gas containing lubricating oil entering the exhaust cavity through the air inlet hole complete lubricating oil separation, the lubricating oil flowing downwards along the inner wall of the exhaust cavity and flowing into the oil storage cavity through the communicating hole. The gas spirally moves downwards around the oil separation section of the oil separation pipe, the gas spirally moving to the bottom of the oil separation cavity and then gathering in the middle part and moving upwards, the gas moving upwards and entering the oil separation pipe through the air inlet end and being discharged from the oil separation pipe through the air outlet end. Since the blocking block is arranged between the oil storage cavity and the exhaust cavity, the gas flowing upwards at the bottom of the exhaust cavity reduces the stirring of the lubricating oil in the oil storage cavity, prevents the lubricating oil in the oil storage cavity from entering the oil separation pipe when the gas moves upwards, and reduces the content of the gaseous refrigerant in the lubricating oil in the oil storage cavity, thereby ensuring the oil separation effect of the oil separation pipe. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a partial sectional view of the compressor of the present application;

[0030] Figure 2For the embodiment of the present application Figure 1 Enlarged view of the embodiment one at A in the figure;

[0031] Figure 3 For the embodiment of the present application Figure 1 Enlarged view of the embodiment two at A in the figure;

[0032] Figure 4 For the embodiment of the present application

[0033] Figure 5 For the embodiment of the present application Figure 4 Enlarged view at B in the figure;

[0034] Figure 6 For the embodiment of the present application

[0035] Figure 7 For the embodiment of the present application

[0036] The signs in the figures represent:

[0037] 1, front cover; 101, exhaust cavity; 102, air inlet hole; 103, exhaust port; 104, oil storage cavity; 2, oil distribution pipe; 3, blocking block; 301, communication hole; 4, oil distribution cover; 401, annular block; 5, stepped structure; 501, first wall surface; 502, second wall surface; 503, stepped surface; 601, first groove; 602, second groove; 603, third groove; 701, first oil discharge hole; 702, second oil discharge hole; 8, oil receiving ring; 801, oil receiving groove; 802, oil discharge hole; 9, static disc; 901, oil storage groove; 3011, first inclined hole; 3012, second inclined hole. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0039] The terms used in the embodiments of the present application are merely for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two, but does not exclude the case of including at least one.

[0040] It should be understood that the term "and / or" as used herein merely describes an associated relationship between associated objects, and indicates that there can be three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in the text generally represents that the front and rear associated objects are in an "or" relationship; "first", "second" in the text are only to distinguish different technical features, and not have a sequence; "upper", "lower", "front", "rear" in the text are only to facilitate the description of the position relationship of the technical features, and have certain significance only in combination with the actual use situation or the specific position description in the preceding text, and not an absolute position relationship.

[0041] It should also be noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that the goods or systems including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such goods or systems. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the goods or systems including the element.

[0042] The present application relates to the field of compressors, in particular to a compressor front cover assembly and a compressor.

[0043] The oil discharge rate of the compressor of the air conditioner directly affects the working performance of the compressor. If the oil discharge rate of the compressor is relatively high, the oil return effect of the compressor is poor, and even impurities are discharged during work, which affects the heat exchange capacity of the evaporator and the condenser, and further reduces the heat exchange effect of the air conditioner. When the oil return effect is low, impurities are discharged, and the compressor will also be over-worn. Therefore, it is particularly important to reduce the oil discharge rate of the compressor, reduce the oil content of the system, and ensure the full lubrication of the compressor. In the existing scroll compressor, the separated lubricating oil is below the exhaust cavity, and the gas discharged from the oil separation pipe causes agitation of the separated lubricating oil, which often carries part of the separated lubricating oil out of the oil separation pipe, thereby causing poor lubricating oil separation effect.

[0044] In the prior art, an oil storage cavity is arranged below the exhaust cavity to store the separated lubricating oil, but the communication passage between the oil storage cavity and the exhaust cavity still causes agitation of the lubricating oil in the oil storage cavity by the gas, and increases the content of the gas refrigerant in the lubricating oil in the oil storage cavity.

[0045] In view of the above technical problems, the present application provides a compressor front cover assembly and a compressor.

[0046] On the one hand, the present application provides a compressor front cover 1 assembly, as shown in Figures 1-7As shown, comprising: a front cover 1, the front cover 1 is formed with an exhaust cavity 101 and an air inlet hole 102 and an exhaust port 103 of the exhaust cavity 101; an oil separation pipe 2, the oil separation pipe 2 includes an air outlet end and an air inlet end, the oil separation pipe 2 is arranged in the exhaust cavity 101 in the up-down direction and the air outlet end faces the exhaust port 103; an oil storage cavity 104 is formed below the exhaust cavity 101; a blocking block 3 is formed between the oil storage cavity 104 and the exhaust cavity 101, the blocking block 3 is formed with a communication hole 301 communicating between the exhaust cavity 101 and the oil storage cavity 104, and the inlet of the communication hole 301 communicates with the exhaust cavity 101; the diameter of the inlet of the communication hole 301 is smaller than the diameter of the exhaust cavity 101.

[0047] After the gas containing lubricating oil entering the exhaust cavity 101 through the air inlet hole 102 is separated, the lubricating oil flows into the oil storage cavity 104 along the inner wall of the exhaust cavity 101 through the communication hole 301; the gas spirally moves downward around the oil separation section of the oil separation pipe 2, and after the gas spirally moves to the bottom of the oil separation cavity, it gathers in the middle and then moves upward, the gas moves upward through the air inlet end into the oil separation pipe 2 and is discharged from the air outlet end; the blocking block 3 is arranged between the oil storage cavity 104 and the exhaust cavity 101, which reduces the stirring of the lubricating oil in the oil storage cavity 104 when the gas flows upward at the bottom of the exhaust cavity 101, prevents the lubricating oil in the oil storage cavity 104 from entering the oil separation pipe 2 when the gas moves upward, and reduces the oil separation effect, thereby ensuring the oil separation effect of the oil separation pipe 2 and reducing the content of gaseous refrigerant in the lubricating oil in the oil storage cavity 104, thereby avoiding the adverse effects of the lubricating oil containing more refrigerant on the compressor when returning to the low-pressure side; the diameter of the inlet of the communication hole 301 is smaller than the diameter of the exhaust cavity 101, which greatly reduces the gas entering the oil storage cavity 104, reduces the stirring of the lubricating oil in the oil storage cavity 104, and reduces the content of gaseous refrigerant in the lubricating oil in the oil storage cavity 104; it needs to be explained that "the oil separation pipe 2 is arranged in the exhaust cavity 101 in the up-down direction", which does not require the oil separation pipe 2 to be absolutely vertically arranged, and "up-down direction" here refers to "non-horizontal direction", the purpose is to make the separated lubricating oil flow downward to the oil storage cavity under the action of gravity.

[0048] To further reduce the stirring of the gas in the oil storage cavity 104, the inlet of the communication hole 301 is eccentrically arranged relative to the oil separation pipe 2.

[0049] The eccentric arrangement of the communication hole 301 makes the edge of the exhaust cavity 101 form a high-pressure area when the gas spirally moves downward in the edge of the exhaust cavity 101, and the communication hole 301 is arranged in the high-pressure area, which has a pressurizing effect on the lubricating oil in the oil storage cavity 104, and accelerates the outward flow of the lubricating oil in the oil storage cavity 104.

[0050] Preferably, to further reduce the interference of gas in the exhaust chamber 101 on the lubricating oil in the oil storage chamber 104, such as... Figures 4-5 As shown, the connecting hole 301 includes a first inclined hole 3011, the outlet of the first inclined hole 3011 is connected to the oil storage chamber 104; the gas entering the exhaust chamber 101 from the air inlet 102 rotates downward around the oil distribution pipe 2 in a direction opposite to the downward inclined direction of the first inclined hole 3011.

[0051] The downward tilt of the first inclined hole 3011 is opposite to the downward spiral direction of the gas, which prevents the gas from directly entering the connecting hole and then being discharged upward from the connecting hole carrying lubricating oil. This effectively reduces the agitation of the gas in the exhaust chamber 101 on the lubricating oil in the oil storage chamber 104, and also reduces the content of gaseous refrigerant in the lubricating oil in the oil storage chamber 104.

[0052] Preferred, such as Figures 4-5 As shown, the connecting hole 301 also includes a second inclined hole 3012, the downward inclination direction of the second inclined hole 3012 is opposite to the downward inclination direction of the first inclined hole 3011; the second inclined hole 3012 is located above the first inclined hole 3011, the inlet of the second inclined hole 3012 is connected to the oil distribution chamber, and the outlet of the second inclined hole 3012 is connected to the inlet of the first inclined hole 3011.

[0053] The direction of the downward spiral movement of gas within the exhaust chamber 101 is related to the orientation of the intake port 102. Figure 4 For example, when the gas discharged from the air inlet 102 first passes behind the oil separator 2, in Figure 4 In the top view, the gas rotates counterclockwise. At this time, in Figure 4 In the process, the second inclined hole 3012 is located on the front side of the exhaust chamber 101. When the gas spirals downward to the bottom, its direction is consistent with the second inclined hole 3012. Similarly, when the gas discharged from the air inlet 102 passes through the front side of the oil distribution pipe 2 first, the second inclined hole 3012 needs to be located on the rear side of the exhaust chamber 101.

[0054] The spiraling downward gas first pressurizes the lubricating oil in the oil storage chamber 104 by passing through the second inclined hole 3012. When it passes through the first inclined hole 3011, the flow direction changes. On the one hand, this reduces the direct impact of the gas on the lubricating oil. On the other hand, when the gas is discharged from the oil storage chamber 104 through the connecting hole 301 again, the collision of the gas is increased, which separates the lubricating oil in the gas.

[0055] Since the gas entering the oil separator 4 still contains lubricating oil, the lubricating oil entering the oil separator pipe 2 needs to be separated again; preferably, such as Figure 1 As shown, an oil separator 4 is installed inside the oil separator pipe 2, and the oil separator 4 is located at the air outlet end.

[0056] A portion of the lubricating oil is drawn up by the gas flowing in the exhaust chamber 101. The gas enters the oil separator 2, where the oil separator 4 further separates the lubricating oil from the gas, effectively reducing the compressor's oil discharge rate.

[0057] Preferably, a first oil flow path is formed at the air outlet end, and a second oil flow path is formed on the inner wall of the exhaust chamber 101. The lubricating oil separated by the oil separator 4 can flow sequentially through the first oil flow path and the second oil flow path into the connecting hole 301 under the action of gravity.

[0058] The lubricating oil separated by the oil separator 4 enters the oil storage chamber 104 through the first and second oil discharge paths. This prevents the separated lubricating oil from being carried away again by the gas when it moves in the exhaust chamber 101, ensuring the separation effect of lubricating oil in the gas and reducing the oil discharge rate of the compressor.

[0059] After the gas is separated again by the oil separator 4, there are several ways in which the separated lubricating oil is discharged into the oil storage chamber 104:

[0060] Example 1, as Figure 2 As shown, the inner wall of the air outlet end forms a stepped structure 5. The stepped structure 5 includes a first wall surface 501, a second wall surface 502, and a stepped surface 503 connecting the first wall surface 501 and the second wall surface 502. The first wall surface 501 is connected to the end face of the air outlet end. The second wall surface 502 is located inside the stepped surface 503, and the first wall surface 501 is located outside the stepped surface 503. The oil distribution cover 4 includes an annular block 401. The annular block 401 forms an outer peripheral wall. The axial lower part of the outer peripheral wall is sealed to the second wall surface 502. The axial upper part of the outer peripheral wall, the stepped surface 503, and the first wall surface 501 form a first groove 601. The air outlet end forms a first oil drain hole 701. One end of the first oil drain hole 701 leads to the first groove 601, and the other end leads to the second oil drain path. The first oil drain path includes the first groove 601 and the first oil drain hole 701. The inner wall of the exhaust chamber 101 is formed with a second groove 602. One end of the second groove 602 is connected to the first oil drain hole 701, and the other end is connected to the connecting hole 301.

[0061] The lubricating oil separated by the oil separator 4 collects in the first groove 601 and flows into the oil storage chamber 104 through the first drain hole 701, the second flow path and the connecting hole 301. The lubricating oil separated by the oil separator 4 flows into the oil storage chamber 104 from the outside of the oil separator pipe 2. On the one hand, the first groove 601 can be used for temporary storage to collect the lubricating oil separated by the oil separator 4. On the other hand, the separated lubricating oil flows from the outside, which effectively prevents the gas in the oil separator pipe 2 from carrying away the separated lubricating oil again when it flows upward. The lubricating oil separated by the oil separator 4 flows along the second groove 602 in the exhaust chamber 101, preventing the gas from carrying away the separated lubricating oil again when flowing in the exhaust chamber 101, thus reducing the oil discharge rate of the compressor. At the same time, when the gas makes a spiral motion in the exhaust chamber 101, the gas collides with the side wall of the second groove 602, which improves the separation efficiency of the lubricating oil in the gas. Furthermore, when the gas passes through the second groove 602, some of the gas flows downward along the groove, which accelerates the downward flow speed of the lubricating oil in the groove, further reducing the interference of the gas on the lubricating oil in the exhaust chamber 101.

[0062] Example 2, as Figure 3 As shown, the oil separator 4 includes an annular block 401. The outer peripheral wall of the annular block 401 is sealed to the inner wall of the exhaust end. An oil receiving ring 8 is provided below the annular block 401. The outer peripheral wall of the oil receiving ring 8 is in contact with the inner wall of the oil separator 2. An oil receiving groove 801 with an upward opening is formed on the oil receiving ring 8. The lubricating oil separated by the oil separator 4 can flow along the inner wall of the annular block 401 into the oil receiving groove 801. An oil drain hole 802 is opened on the oil receiving groove 801. A second oil drain hole 702 is opened on the oil separator 2. The second oil drain hole 702 is connected to the oil drain hole 802. A third groove 603 is formed on the inner wall of the exhaust chamber 101. One end of the third groove 603 is connected to the second oil drain hole 702, and the other end is connected to the connecting hole 301.

[0063] After being separated by the oil separator 4, the lubricating oil flows downward along the inner wall of the annular block 401 into the oil receiving groove 801 on the oil receiving ring 8. The lubricating oil collects in the oil receiving groove 801 and enters the oil storage chamber 104 through the oil drain hole 802, the second oil drain hole 702, the third groove 603 and the connecting hole 301. The lubricating oil flows downward from the inside of the annular block 401 into the oil receiving groove 801. On the one hand, the oil receiving groove 801 can be used to collect and temporarily store the lubricating oil separated by the oil separator 4. On the other hand, the lubricating oil entering the oil receiving groove 801 can prevent the lubricating oil separated by the oil separator 4 from flowing downward along the inner wall of the oil separator pipe 2, thereby reducing the interference of the gas flowing in the oil separator pipe 2 on the separated lubricating oil, preventing the gas from carrying away the separated lubricating oil again, and reducing the oil discharge rate of the compressor.

[0064] The compressor of the present application comprises the above-mentioned compressor front cover 1 assembly, the lubricating oil in the high-pressure refrigerant in the compressor is effectively separated, the heat exchange efficiency of the refrigerant is ensured, the oil circuit lubrication of the moving parts inside the compressor is ensured, and the stability of the compressor operation is improved.

[0065] The compressor is a scroll compressor, which comprises a static plate 9, as shown in the figure, the static plate 9 is formed with a first matching surface, the front cover 1 is formed with a second matching surface, as shown in the figure, the first matching surface is connected to the second matching surface in a sealed manner, the first matching surface is recessed to form an oil storage groove 901, an oil storage cavity 104 extends to the second matching surface towards the static plate 9, and the oil storage cavity 104 is communicated with the oil storage groove 901. Figure 7 Figure 6 The first matching surface is connected to the second matching surface in a sealed manner, the first matching surface is recessed to form an oil storage groove 901, an oil storage cavity 104 extends to the second matching surface towards the static plate 9, and the oil storage cavity 104 is communicated with the oil storage groove 901.

[0066] By extending the oil storage cavity 104 towards the static plate 9, the oil storage cavity 104 is communicated with the oil storage groove 901 on the static plate 9, the volume of the oil storage cavity 104 is effectively enlarged, the agitation of the lubricating oil in the oil storage cavity 104 by the high-pressure refrigerant is further reduced, the gaseous refrigerant contained in the lubricating oil is reduced, and when the lubricating oil returns to the low-pressure side through the static plate oil return hole, the energy efficiency of the compressor is effectively improved.

[0067] The flow process of the high-pressure gas containing lubricating oil in the scroll compressor during operation is introduced as follows:

[0068] ​When the scroll compressor works, the high-pressure gas containing lubricating oil is discharged from the gas outlet of the static plate 9 (for the convenience of introduction, the gas below refers to the high-pressure gas containing lubricating oil), and the gas enters the exhaust cavity 101 in the front cover 1 from the gas inlet hole 102, the axis of the gas inlet hole 102 does not intersect with the axis of the oil separation pipe 2, and when the gas enters the exhaust cavity 101 from the gas inlet hole 102, it makes downward spiral motion around the outer wall of the oil separation pipe 2, in the spiral motion, the lubricating oil in the gas is separated under the action of centrifugal force, collision with the outer wall of the oil separation pipe 2, and collision with the inner wall of the exhaust cavity 101, and flows downward along the inner wall of the exhaust cavity 101 and the outer wall of the oil separation pipe 2, the separated lubricating oil enters the oil storage cavity 104 through the communication hole 301 on the blocking block 3; the gas spirally moves downward and collides with the blocking block 3, and then converges to the middle and moves downward and enters the oil separation pipe 2, since there is still unseparated lubricating oil in the gas, when the gas collides with the blocking block 3, it inevitably enters the oil storage cavity 104 through the communication hole 301, and part of the lubricating oil enters the exhaust cavity 101 again; when the gas enters the oil separation pipe 2 upward and passes through the oil separation cover 4, the lubricating oil in the gas is separated again by the oil separation cover 4, and the separated lubricating oil enters the oil storage cavity 104 along the first groove 601, the first oil outlet hole 701 and the second groove 602, or along the oil receiving groove 801, the oil outlet hole 802, the second oil outlet hole 702 and the third groove 603; the oil separation cover 4 can not only separate the lubricating oil, but also separate some impurities in the gas, and the separated impurities adhere to the separation cover and are taken away by the separated lubricating oil.

[0069] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be regarded as the protection scope of the present application.

Claims

1. A compressor front cover assembly characterized by, The application relates to a front cover (1) and a split oil pipe (2) and a barrier block (3) and a split oil cover (4) and a step structure (5). The front cover (1) is internally provided with an exhaust cavity (101) and an air inlet hole (102) and an exhaust port (103) of the exhaust cavity (101). The split oil pipe (2) is internally provided with an air outlet end and an air inlet end, and the air outlet end is arranged in the exhaust cavity (101) in the up-down direction and faces the exhaust port (103). An oil storage cavity (104) is formed below the exhaust cavity (101). The barrier block (3) is formed between the oil storage cavity (104) and the exhaust cavity (101), and the barrier block (3) is internally provided with a communication hole (301) for communicating between the exhaust cavity (101) and the oil storage cavity (104), the inlet of the communication hole (301) communicates with the exhaust cavity (101), and the diameter of the inlet of the communication hole (301) is smaller than the diameter of the exhaust cavity (101). The communication hole (301) comprises a first inclined hole (3011), and the outlet of the first inclined hole (3011) communicates with the oil storage cavity (104). The downward rotating direction of the gas entering the exhaust cavity (101) from the air inlet hole (102) around the split oil pipe (2) is opposite to the downward inclined direction of the first inclined hole (3011). The communication hole (301) further comprises a second inclined hole (3012), and the downward inclined direction of the second inclined hole (3012) is opposite to the downward inclined direction of the first inclined hole (3011). The second inclined hole (3012) is located above the first inclined hole (3011), the inlet of the second inclined hole (3012) communicates with the exhaust cavity (101), and the outlet of the second inclined hole (3012) communicates with the inlet of the first inclined hole (3011).

2. The compressor front cover assembly of claim 1, wherein, The inlet of the communication hole (301) is eccentrically arranged relative to the split oil pipe (2).

3. The compressor front cover assembly of any of claims 1-2, wherein, The split oil cover (4) is arranged in the air outlet end of the split oil pipe (2).

4. The compressor front cover assembly of claim 3, wherein, The air outlet end is provided with a first oil discharge flow path, and the inner wall of the exhaust cavity (101) is provided with a second oil discharge flow path, and the lubricating oil separated by the split oil cover (4) can flow into the communication hole (301) under the action of gravity in sequence through the first oil discharge flow path and the second oil discharge flow path.

5. The compressor front cover assembly of claim 4, wherein, The inner wall of the air outlet end is provided with a step structure (5), the step structure (5) comprises a first wall surface (501), a second wall surface (502) and a step surface (503) connecting the first wall surface (501) and the second wall surface (502), the first wall surface (501) is connected with the end surface of the air outlet end, the second wall surface (502) is located on the inner side of the step surface (503), and the first wall surface (501) is located on the outer side of the step surface (503). The oil separation cover (4) comprises an annular block (401) formed with an outer peripheral wall, an axial lower part of the outer peripheral wall being sealingly connected to the second wall surface (502), a first groove (601) being formed between an axial upper part of the outer peripheral wall, the step surface (503) and the first wall surface (501), the gas outlet end forming a first oil discharge hole (701) having one end opening into the first groove (601) and the other end opening into the second oil discharge flow path; the first oil discharge flow path comprising the first groove (601) and the first oil discharge hole (701).

6. The compressor front cover assembly of claim 5, wherein, The inner wall of the gas discharge chamber (101) is formed with a second groove (602) having one end communicating with the first oil discharge hole (701) and the other end communicating with the communication hole (301); the second oil discharge flow path comprises the second groove (602).

7. The compressor front cover assembly of claim 4, wherein, The oil separation cover (4) comprises an annular block (401) having an outer peripheral wall sealingly connected to the inner wall of the gas outlet end, an oil receiving ring (8) being arranged below the annular block (401), an outer peripheral wall surface of the oil receiving ring (8) being fitted to the inner wall surface of the oil separation pipe (2), the oil receiving ring (8) being formed with an oil receiving groove (801) having an opening facing upward, separated lubricating oil of the oil separation cover (4) being able to flow along the inner wall of the annular block (401) into the oil receiving groove (801); The oil receiving groove (801) is formed with a drain hole (802), the oil separation pipe (2) is formed with a second oil discharge hole (702) communicating with the drain hole (802); The inner wall of the gas discharge chamber (101) is formed with a third groove (603) having one end communicating with the second oil discharge hole (702) and the other end communicating with the communication hole (301); the first oil discharge flow path comprises the oil receiving groove (801), the drain hole (802) and the second oil discharge hole (702); the second oil discharge flow path comprises the third groove (603).

8. A compressor characterized by, The compressor front cover assembly comprises the compressor front cover assembly according to any one of claims 1-7.

9. The compressor of claim 8, wherein, The compressor is a scroll compressor comprising a static disc (9) formed with a first matching surface, the front cover (1) being formed with a second matching surface, the first matching surface being sealingly connected to the second matching surface; The first matching surface is recessed to form an oil storage groove (901), the oil storage cavity (104) extending toward the static disc (9) to the second matching surface, the oil storage cavity (104) communicating with the oil storage groove (901).

Images