Compressor front cover assembly, compressor and air conditioner

Abstract

The application relates to the compressor field, in particular to a compressor front cover assembly, a compressor and an air conditioner. The compressor front cover assembly comprises a front cover which is formed with a cavity, the cavity comprising an inlet hole and an outlet hole; an oil distribution pipe, one end of the oil distribution pipe being an air inlet end and the other end being an air outlet end; the outer circumferential surface of the oil distribution pipe is formed with a plurality of intersecting grooves, the first end of the groove being located on the end face of the air inlet end, and the second end of the groove being a blind end; the oil distribution pipe is arranged in the outlet hole, the air inlet end faces the cavity, and the air outlet end faces the outside of the front cover; at least one groove is communicated with the inlet hole, thereby improving the oil distribution effect of the oil distribution pipe of the compressor and reducing the oil discharge rate of the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressors, and more specifically to a compressor front cover assembly, a compressor, and an air conditioner. Background Technology

[0002] The oil discharge rate of an air conditioner compressor directly affects its performance. A high oil discharge rate leads to poor oil return and even the discharge of impurities during operation, impacting the heat exchange capacity of the evaporator and condenser, thus reducing the overall heat exchange efficiency of the air conditioner. Conversely, a low oil return rate and the discharge of impurities can cause excessive wear on the compressor. Therefore, reducing the compressor's oil discharge rate, lowering the system's oil content, and ensuring adequate lubrication are crucial.

[0003] There is currently no good solution to the above-mentioned technical problems. Summary of the Invention

[0004] To improve the oil distribution effect of the compressor's oil distribution pipe and reduce the compressor's oil discharge rate, this invention provides a compressor front cover assembly, a compressor, and an air conditioner.

[0005] In a first aspect, the present invention provides a compressor front cover assembly, comprising:

[0006] The front cover has a cavity, the cavity including an inlet and an outlet.

[0007] The oil distribution pipe has an air intake end at one end and an exhaust end at the other end. The outer circumferential surface of the oil distribution pipe has multiple intersecting grooves. The first end of each groove is located on the end face of the air intake end, and the second end of each groove is a blind end.

[0008] The oil distribution pipe is disposed in the outlet hole, the air inlet end faces the cavity, and the exhaust end faces the outside of the front cover; at least one groove communicates with the inlet hole.

[0009] Preferably, the multiple intersecting grooves are spirally arranged around the outer circumferential surface of the oil distribution pipe.

[0010] Preferably, the multiple intersecting grooves include a first groove and a second groove with opposite rotation directions.

[0011] Preferably, the first groove and the second groove have the same pitch and the same cross-sectional area.

[0012] Preferably, the oil distribution pipe includes an inner hole, and when the oil distribution pipe is in a horizontal state, the first end of the first groove and the first end of the second groove are lower than the bottom wall surface of the inner hole.

[0013] Preferably, the blind ends of the first trench and the second trench intersect and communicate with the inlet hole.

[0014] Preferably, the inner wall surface of the outlet is formed with a first step structure, the first step structure including a first inner wall surface A with a smaller inner diameter, a first inner wall surface B with a larger inner diameter, and a first step surface connecting the first inner wall surface A and the first inner wall surface B; the first inner wall surface B is disposed near the outer side of the outlet.

[0015] The outer peripheral surface of the oil distribution pipe is formed with a second step structure, which includes a second outer wall surface A with a smaller outer diameter, a second outer wall surface B with a larger outer diameter, and a second step surface connecting the second outer wall surface A and the second outer wall surface B.

[0016] The second step surface faces the cavity and abuts against the first step surface, and the second outer wall surface B is opposite to the first inner wall surface B and is in an interference fit.

[0017] Preferably, a filter screen 6 is provided inside the inner hole of the oil distribution pipe.

[0018] In a second aspect, the present invention provides a compressor, including the aforementioned compressor front cover assembly.

[0019] Thirdly, the present invention also provides an air conditioner including the compressor described above.

[0020] This invention creates intersecting spiral grooves on the outer wall of the oil distribution pipe. Airflow enters the grooves through the inlet, flows along the grooves, and collides with the inner wall of the grooves. During the collision, droplets in the airflow adhere to the inner wall of the grooves, and the droplets are initially separated. At the groove intersection, the airflow splits into at least two streams and flows in different grooves. At the next groove intersection, the gas-liquid mixture in different grooves collides with each other. During the collision, droplets adsorb each other, forming larger droplets. These larger droplets fall onto the groove wall under the influence of gravity. The droplets on the inner wall of the groove flow out of the groove and into the cavity under the influence of the airflow; or they continue to flow with the airflow and adhere to the inner wall of the groove when colliding with it, and the droplets are separated again. Because different airflow streams converge and mix at the intersection, and droplets in the airflow adsorb each other, vibration and noise are reduced compared to airflow colliding with solids. Attached Figure Description

[0021] Figure 1 This is a bottom view of the compressor front cover assembly according to an embodiment of the present invention;

[0022] Figure 2 This is an embodiment of the present invention. Figure 1 CC section view;

[0023] Figure 3 This is a cross-sectional view of the front cover according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the appearance of the oil distribution pipe according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of a compressor according to an embodiment of the present invention.

[0026] The reference numerals in the attached figures are as follows:

[0027] 1. Front cover; 2. Oil distribution pipe; 3. Inlet hole; 4. Outlet hole; 101. Cavity; 501. First groove; 502. Second groove; 202. Inner hole; 401. First step; 4011. First inner wall surface; 4012. First inner wall surface B; 4013. First step surface; 201. Second step structure; 2011. Second outer wall surface A; 2012. Second outer wall surface B; 2013. Second step surface; 6. Filter screen. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention 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 inclusion of at least one.

[0030] It should be understood that the term "and / or" used in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship; "first" and "second" are merely used to distinguish different technical features, not to indicate a chronological order; "upper," "lower," "front," and "rear" are only used to more conveniently illustrate the positional relationship of technical features and only have meaning when combined with actual usage or the specific location descriptions in the preceding text, not as absolute positional relationships; "opposite side" and "front side" are only used to distinguish two different surfaces of the baffle and have no other meaning.

[0031] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0032] This invention relates to the field of compressors, specifically to a compressor front cover assembly, a compressor, and an air conditioner. The oil output rate of an air conditioner compressor directly affects its performance. If the oil output rate is high, the compressor's oil return effect is poor, and impurities may even be discharged during operation, affecting the heat exchange capacity of the evaporator and condenser, thus reducing the air conditioner's heat exchange efficiency. Conversely, when the oil return effect is low and impurities are discharged, the compressor may experience excessive wear. Therefore, reducing the compressor's oil output rate, lowering the system's oil content, and ensuring adequate lubrication of the compressor are particularly important.

[0033] To address the aforementioned technical problems, the present invention provides a compressor front cover assembly, a compressor, and an air conditioner.

[0034] like Figure 1-5 As shown, the present invention provides a compressor front cover 1 assembly, comprising: a front cover 1 having a cavity 101, the cavity 101 including an inlet 3 and an outlet 4; an oil distribution pipe 2, one end of which is an air inlet and the other end is an exhaust end; the outer peripheral surface of the oil distribution pipe 2 has multiple intersecting grooves, the first end of which is located on the end face of the air inlet, and the second end of which is a blind end; the oil distribution pipe 2 is disposed in the outlet 4, the air inlet facing the cavity 101, and the exhaust end facing the outside of the front cover 1; at least one groove communicates with the inlet 3. Here, the "blind end" is the endpoint of the groove extending on the outer wall of the oil distribution pipe 2, which does not have an opening in the extension direction. Correspondingly, the first end of the groove located on the end face of the air inlet is not a blind end, and the airflow can flow along the groove and be discharged from the end face of the air inlet.

[0035] The airflow enters the groove through the inlet 3, flows along the groove, and collides with the inner wall of the groove. During the collision, the droplets in the airflow adhere to the inner wall of the groove, and the droplets are initially separated. At the intersection of the grooves, they split into at least two streams and flow in different grooves. At the next intersection of the grooves, the gas-liquid mixture in different grooves collides with each other. During the collision, the droplets adsorb each other to form larger droplets. The larger droplets fall onto the groove wall under the action of gravity. The droplets on the inner wall of the groove flow out of the groove and enter the cavity 101 under the action of the airflow; or they continue to flow with the airflow and adhere to the inner wall of the groove when they collide with it, and the droplets are separated again. Because different airflows converge and mix at the intersection, and the droplets in the airflow adsorb each other, the vibration and noise are reduced compared to the collision between the airflow and the solid.

[0036] Preferred, such as Figure 4 As shown, multiple intersecting grooves can be spirally arranged around the outer circumference of the oil distribution pipe 2.

[0037] This allows the airflow to flow along the spiral groove, which on the one hand accelerates the airflow and avoids excessive pressure caused by poor airflow, and on the other hand extends the path of the airflow around the oil separator 2, increasing the probability of the airflow colliding with the inner wall of the groove and increasing the probability of droplets in the airflow being adsorbed on the inner wall of the groove, which is beneficial to gas-liquid separation.

[0038] Multiple intersecting grooves can also be made, including a first groove 501 and a second groove 502 with opposite rotation directions.

[0039] In this way, the airflow flows along grooves with different spiral directions, causing more intense collisions at the intersection of the grooves, more thorough convergence of the airflows, and an increased probability of mutual adsorption between different droplets in the airflow, thus improving the droplet separation efficiency.

[0040] Preferably, the first groove 501 and the second groove 502 have the same pitch and the first groove 501 and the second groove 502 have the same cross-sectional area.

[0041] When airflow flows in the first groove 501 and the second groove 502 with the same pitch, the airflow travels the same distance and has the same cross-sectional area in the two grooves. This results in the same flow resistance and momentum in the two grooves. When the two airflows with the same momentum collide at the intersection of the first groove 501 and the second groove 502, they can generate a more intense and thorough convergence and mixing at the intersection. This prevents the airflow in one groove from being too large and continuing to flow along the groove under the action of inertia, which would lead to insufficient collision between the two airflows.

[0042] Preferred, such as Figure 2 and Figure 4 As shown, the oil distribution pipe 2 includes an inner hole 202. When the oil distribution pipe 2 is in a horizontal state, the first end of the first groove 501 and the first end of the second groove 502 are lower than the bottom wall surface of the inner hole 202.

[0043] When the airflow flows out from the first end, since the first end of the groove is lower than the bottom wall of the inner hole 202, the liquid flowing out along the inner wall of the groove flows downward to the bottom wall of the cavity 101 under the action of gravity, preventing the liquid from flowing downward into the inner hole 202, thereby preventing the droplets from being discharged from the inner hole 202 with the airflow and increasing the oil discharge of the compressor.

[0044] Preferred, such as Figure 2 As shown, the blind end of the first groove 501 and the blind end of the second groove 502 intersect and are connected to the inlet hole 3.

[0045] The blind ends of the first groove 501 and the second groove 502 intersect and are directly opposite the inlet hole 3, allowing airflow to simultaneously enter the first groove 501 and the second groove 502 through the inlet hole 3. On the one hand, this prevents the airflow from flowing along the groove towards the side away from the cavity 101. On the other hand, the airflow splits into two at the blind ends. In order to distribute the airflow into two streams more evenly, the blind ends of the two grooves can be directly opposite the inlet hole 3. This helps to distribute the airflow evenly in the first groove 501 and the second groove 502, and further facilitates the full collision and convergence of the airflow at the intersection of the first groove 501 and the second groove 502.

[0046] Preferred, such as Figure 3 As shown, the inner wall surface of the outlet 4 is formed with a first step structure 401. The first step structure 401 includes a first inner wall surface A4011 with a smaller inner diameter, a first inner wall surface B4012 with a larger inner diameter, and a first step surface 4013 connecting the first inner wall surface A4011 and the first inner wall surface B4012. The first inner wall surface B4012 is disposed near the outer side of the outlet 4. The outer peripheral surface of the oil distribution pipe 2 is formed with a second step structure 201. The second step structure 201 includes a second outer wall surface A2011 with a smaller outer diameter, a second outer wall surface B2012 with a larger outer diameter, and a second step surface 2013 connecting the second outer wall surface A2011 and the second outer wall surface B2012. The second step surface 2013 faces the cavity 101 and abuts against the first step surface 4013. The second outer wall surface B2012 is opposite to the first inner wall surface B4012 and is interference-fitted.

[0047] The interference fit between the second outer wall surface B2012 and the first inner wall surface B4012 prevents airflow leakage between them. The second stepped surface 2013 and the first stepped surface 4013 abut against each other to axially position the airflow pipe, ensuring that the blind ends of the first groove 501 and the second groove 502 are aligned with the inlet hole 3. To reduce airflow leakage between the second outer wall surface B2012 and the first outer wall surface B, the second outer wall surface A2011 and the first outer wall surface A can be fitted with a transition fit or an interference fit. The oil distribution pipe 2 and the outlet hole 4 can also be connected by threads. If connected by threads, the threads must be sealing threads, and after the threaded connection, it must be ensured that the first groove 501 and the second groove 502 can communicate with the inlet hole 3.

[0048] Preferred, such as Figure 2 As shown, a filter screen is installed inside the inner hole 202 of the oil distribution pipe 2.

[0049] When the airflow exits through the inner hole 202, the filter screen filters droplets and impurities in the airflow. Simultaneously, due to the filter screen's obstruction of the airflow, the airflow exerts an axial force on the oil distribution pipe 2. This force increases the compression of the second step surface 2013 against the first step surface 4013, further improving the axial positioning of the oil distribution pipe 2 relative to the outlet hole 4. This ensures that the blind ends of the first groove 501 and the second groove 502 are aligned with the inlet hole 3, ensuring that the airflow can smoothly enter the grooves and be evenly divided into two streams at the blind ends. The filter screen can be wavy, with the peaks and troughs of the waves in the vertical direction. The wavy shape increases the filtration area, and the vertical peaks and troughs facilitate the downward flow of droplets on the filter screen, cleaning impurities as they flow downwards.

[0050] This invention provides a compressor, including a compressor front cover assembly. This compressor exhibits low oil discharge, stable operation, and high efficiency.

[0051] The present invention also provides an air conditioner including the above-mentioned compressor, which has good heating effect, high refrigerant efficiency and long service life.

[0052] To more clearly illustrate the present invention, the working process of the present invention will be described below using a compressor as an example.

[0053] For ease of explanation, the term "airflow" as used below includes "droplets." When the compressor operates, the airflow containing droplets flows from the inlet 3 to the oil distribution pipe 2, and is equally divided into two streams at the blind ends of the first groove 501 and the second groove 502. The two airflows flow along the extension direction of the grooves. Firstly, as the two airflows flow within the grooves, they collide with the inner walls of the grooves. Some droplets in the airflow adhere to the inner walls of the grooves and flow downwards under gravity, while simultaneously flowing along the inner walls of the grooves and eventually entering the cavity 101. Secondly, the two airflows collide at the intersection of the two grooves. Since the cross-sectional area and pitch of the two grooves are the same, the momentum of the airflow within the two grooves is also essentially the same. When the two airflows collide, the droplets in the airflows attract each other to form larger droplets. Some droplets fall downwards onto the inner wall of the groove, while others flow with the airflow and eventually enter the cavity 101. The droplets flowing along the inner wall of the groove flow downwards along the end face of the oil separator 2 to the bottom wall of the cavity 101 when they exit the groove. Some of the droplets that enter the cavity 101 with the airflow collide with and are attracted to the inner wall of the cavity 101, while others follow the airflow into the inner hole 202 of the oil separator 2. Since the inner hole 202 is equipped with a filter screen, both droplets and solid impurities in the airflow are blocked by the filter screen. The filter screen can be designed as a vertical plane, and when the droplets flow downwards on the filter screen, they carry the solid impurities downwards to achieve the effect of cleaning the filter screen.

[0054] Through the flow process described above, a large number of liquid droplets in the airflow are separated, reducing the oil discharge rate of the compressor.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A compressor front cover assembly characterized by, The application relates to a compressor front cover assembly. The front cover (1) is formed with a cavity (101), the cavity (101) comprising an inlet hole (3) and an outlet hole (4); The oil distribution pipe (2) has an air inlet end and an air outlet end; a plurality of intersecting grooves are formed on the outer periphery of the oil distribution pipe (2), the first end of the grooves is located on the end face of the air inlet end, and the second end of the grooves is a blind end; The oil distribution pipe (2) is arranged in the outlet hole (4), the air inlet end faces the cavity (101), the air outlet end faces the outside of the front cover (1), and at least one groove is in communication with the inlet hole (3); The plurality of intersecting grooves are spirally arranged on the outer periphery of the oil distribution pipe (2); The first groove (501) and the second groove (502) have the same pitch and the same cross-sectional area.

2. The compressor front cover assembly of claim 1, wherein, The oil distribution pipe (2) comprises an inner hole (202), when the oil distribution pipe (2) is in a horizontal state, the first end of the first groove (501) and the first end of the second groove (502) are lower than the bottom wall of the inner hole (202).

3. The compressor front cover assembly of claim 2, wherein, The blind end of the first groove (501) and the blind end of the second groove (502) intersect and are in communication with the inlet hole (3).

4. The compressor front cover assembly of claim 3, wherein, The inner wall of the outlet hole (4) is formed with a first step structure (401), the first step structure (401) comprises a first inner wall A (4011) with a smaller inner diameter, a first inner wall B (4012) with a larger inner diameter, and a first step surface (4013) connected between the first inner wall A (4011) and the first inner wall B (4012), and the first inner wall B (4012) is arranged close to the outer side of the outlet hole (4); 5. The compressor front cover assembly of claim 4, wherein, The outer periphery of the oil distribution pipe (2) is formed with a second step structure (201), the second step structure (201) comprises a second outer wall A (2011) with a smaller outer diameter, a second outer wall B (2012) with a larger outer diameter, and a second step surface (2013) connected between the second outer wall A (2011) and the second outer wall B (2012); The second step surface (2013) faces the cavity (101) and abuts against the first step surface (4013), and the second outer wall B (2012) is in abutting connection with the first inner wall B (4012). A filter screen (6) is arranged in the inner hole (202) of the oil distribution pipe (2).

6. The compressor front cover assembly of any of claims 1-5, wherein, The application further discloses a compressor comprising the compressor front cover assembly.

7. A compressor characterized by, The application further discloses a compressor comprising the compressor.

8. An air conditioner characterized by comprising: ​

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