Compression structure and compressor

Abstract

The application provides a compression structure and a compressor, and the compression structure comprises: a cylinder, which has a compression cavity inside; the compression cavity is a cylindrical cavity; a roller component, which is movably arranged in the compression cavity; and a sliding vane, which is movably arranged in the compression cavity and connected with the roller component to divide the compression cavity into an air inlet cavity and an air outlet cavity; wherein the cylinder comprises a first inner wall surface surrounding the compression cavity and a second inner wall surface connected with the first inner wall surface, the second inner wall surface has an exhaust groove in communication with the air outlet cavity between the second inner wall surface and the compression cavity, and the second inner wall surface is an arc surface; along the extending direction of the second inner wall surface, the shortest distance between the second inner wall surface and the axis of the compression cavity gradually increases. The compression structure of the application makes the discharge of liquid more smooth, and ensures that the compressor will not be over-compressed, and the timely discharge of liquid during the compression process can effectively avoid the damage of the pump body caused by the over-compression impact of the compressor pump body.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically to a compression structure and a compressor. Background Technology

[0002] Traditional compressor pump structures discharge high-pressure gas through the exhaust ports of the upper and lower flanges.

[0003] However, in the existing pump body structure, if the compressor draws in liquid refrigerant or a gas-liquid mixture, the exhaust valve plate and exhaust baffle covering the flange exhaust port will be severely impacted by the liquid refrigerant, causing them to break and damage the compressor. After the liquid refrigerant is discharged, it will be overcompressed. Since the liquid refrigerant is incompressible, the pump body will be subjected to the impact of liquid overcompression, and the pressure will rise sharply, causing the pump body parts to wear or shift.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a compression structure and compressor to solve the technical problem that parts in compressors in related technologies are easily damaged during the process.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: a compression structure is provided, comprising: a cylinder having a compression chamber; the compression chamber being a cylindrical cavity; a roller component movably disposed within the compression chamber; and a sliding vane movably disposed within the compression chamber, the vane being connected to the roller component to divide the compression chamber into an intake chamber and an exhaust chamber; wherein the cylinder includes a first inner wall surface forming the compression chamber and a second inner wall surface connected to the first inner wall surface, the second inner wall surface having a discharge groove communicating with the exhaust chamber between it and the compression chamber, and the second inner wall surface being an arc-shaped surface; along the extension direction of the second inner wall surface, the shortest distance between the second inner wall surface and the axis of the compression chamber gradually increases.

[0007] Furthermore, a sliding vane groove is provided inside the cylinder, and the sliding vane is movably inserted into the sliding vane groove. One end of the second inner wall surface is connected to the first inner wall surface, and the other end of the second inner wall surface is connected to the sliding vane groove.

[0008] Furthermore, the second inner wall surface has a first connecting edge line connected to the first inner wall surface and a second connecting edge line connected to the sliding vane groove; wherein, both the first connecting edge line and the second connecting edge line are arranged parallel to each other with the axis of the compression cavity, and the value of the central angle β of the second inner wall surface ranges from 45° to 90°; and / or, the shortest distance between the first connecting edge line and the axis of the compression cavity is s, and the shortest distance between the second connecting edge line and the axis of the compression cavity is S, where s < S.

[0009] Furthermore, the cylinder has an intake groove that communicates with the intake chamber. The intake groove is located on the side of the slide away from the discharge groove, and the intake groove is recessed into the first inner wall surface.

[0010] Furthermore, the compression structure includes a preset plane, which is arranged perpendicular to the axis of the compression chamber. The cross-sectional area of ​​the air inlet groove on the preset plane is B, and the cross-sectional area of ​​the exhaust groove on the preset plane is A; wherein, A > B.

[0011] Furthermore, the first inner wall surface includes a connecting surface, and the second inner wall surface includes a first machining surface and a second machining surface located on opposite sides of the first inner wall surface; the first machining surface, the connecting surface, and the second machining surface are distributed sequentially along a direction parallel to the axis of the compression cavity.

[0012] Furthermore, the cylinder includes an upper cylinder and a lower cylinder arranged at intervals, and the compression structure also includes a partition plate located between the upper cylinder and the lower cylinder. The partition plate is provided with a first connecting groove, and the exhaust chamber on the upper cylinder is connected to the exhaust chamber on the lower cylinder through the first connecting groove.

[0013] Furthermore, the compression structure also includes: a first fixing component, which is connected to the upper cylinder, and the first fixing component is provided with a second connecting groove that communicates with the exhaust chamber on the upper cylinder; and a second fixing component, which is connected to the side of the lower cylinder away from the upper cylinder, and the second fixing component is provided with a third connecting groove that communicates with the exhaust chamber on the lower cylinder.

[0014] Furthermore, the partition is provided with a first communicating inner wall surface, a second communicating inner wall surface, and a third communicating inner wall surface; one end of the first communicating inner wall surface is connected to one end of the second communicating inner wall surface, one end of the third communicating inner wall surface is connected to the end of the first communicating inner wall surface away from the second communicating inner wall surface, and the other end of the third communicating inner wall surface is connected to the end of the second communicating inner wall surface away from the first communicating inner wall surface; wherein, both the first communicating inner wall surface and the second communicating inner wall surface are arc surfaces, the first communicating inner wall surface and the first inner wall surface are located on the same arc surface; the second communicating inner wall surface and the second inner wall surface are located on the same arc surface.

[0015] A compressor is provided, including a compression structure.

[0016] Beneficial effects:

[0017] 1. The crescent-shaped drainage structure design ensures that the liquid can be fully drained throughout the entire compression process without over-compression.

[0018] 2. It not only solved the problem of broken exhaust valve plates and exhaust baffles, but also solved the problem of pump body damage caused by compressor impact. Attached Figure Description

[0019] Figure 1This is a top view of the compression structure used in an embodiment of the present invention;

[0020] Figure 2 This is a top view of the cylinder with the compression structure used in the embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the cylinder with the compression structure used in the embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the discharge groove of the compression structure used in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the first embodiment of the second inner wall surface of the compression structure provided in this invention.

[0024] Figure 6 This is a schematic diagram of the second embodiment of the compression structure provided in this invention, showing the second inner wall surface.

[0025] Figure 7 This is a schematic diagram of the third embodiment of the second inner wall surface of the compression structure provided in this invention.

[0026] Figure 8 This is a cross-sectional view of the compression structure provided in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the partition of the compression structure provided in the embodiment of the present invention;

[0028] Figure 10 This is an internal schematic diagram of the compression structure provided in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the second fixing component of the compression structure provided in an embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the compression structure provided in the embodiment of the present invention when it is in the first working state;

[0031] Figure 13 This is a schematic diagram of the compression structure provided in the embodiment of the present invention when it is in the second working state;

[0032] Figure 14 This is a schematic diagram of the compression structure provided in the embodiment of the present invention when it is in the third working state;

[0033] Figure 15 This is a schematic diagram of the compression structure provided in the embodiment of the present invention when it is in the fourth working state;

[0034] Figure 16This is a schematic diagram of the compression structure provided in the embodiment of the present invention when it is in the fifth working state.

[0035] The above figures include the following reference numerals:

[0036] 1. Cylinder; 101. Upper cylinder; 102. Lower cylinder; 11. Compression chamber; 111. Intake chamber; 112. Exhaust chamber; 12. First inner wall surface; 121. Connecting surface; 13. Second inner wall surface; 131. First connecting edge; 132. Second connecting edge; 133. First machined surface; 134. Second machined surface; 14. Discharge groove; 15. Sliding vane groove; 16. Intake groove; 2. Roller component; 3. Sliding vane; 4. Partition; 41. First connecting groove; 42. First connecting inner wall surface; 43. Second connecting inner wall surface; 44. Third connecting inner wall surface; 5. First fixed component; 51. Second connecting groove; 6. Second fixed component; 61. Third connecting groove. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0038] According to an embodiment of the present invention, a compression structure is provided; please refer to [link / reference]. Figures 1 to 16 The system includes: a cylinder 1, which has a compression chamber 11; the compression chamber 11 is a cylindrical cavity; a roller component 2, which is movably disposed within the compression chamber 11; and a slide 3, which is movably disposed within the compression chamber 11 and is connected to the roller component 2 to divide the compression chamber 11 into an intake chamber 111 and an exhaust chamber 112; wherein the cylinder 1 includes a first inner wall surface 12 that surrounds the compression chamber 11 and a second inner wall surface 13 that is connected to the first inner wall surface 12, and the second inner wall surface 13 has an exhaust groove 14 that communicates with the exhaust chamber 112 between it and the compression chamber 11, and the second inner wall surface 13 is an arc-shaped surface; along the extension direction of the second inner wall surface 13, the shortest distance between the second inner wall surface 13 and the axis of the compression chamber 11 gradually increases.

[0039] Using the above-described device, the roller component 2 rotates within the compression chamber 11, dividing the compression chamber 11 into an intake chamber 111 and an exhaust chamber 112. As the roller component 2 rotates one revolution along the first inner wall surface 12 and the second inner wall surface 13, the space of the exhaust chamber 112 gradually shrinks, and the air inside the chamber is compressed as the roller component 2 rotates. Simultaneously, the liquid drawn into the compression chamber 11 is also discharged along the discharge groove 14 as the roller component 2 rotates. Since the second inner wall surface 13 is an arc-shaped surface, the space of the exhaust chamber 112 will not decrease drastically during the rotation of the roller component 2, making the discharge of liquid smoother. This also ensures that the compressor will not over-compress. Furthermore, timely discharge of liquid during compression can effectively prevent pump damage caused by over-compression impact on the compressor pump body.

[0040] In the compression structure of this embodiment, see Figures 1 to 2 The cylinder 1 is provided with a vane groove 15, and the vane 3 is movably inserted into the vane groove 15. One end of the second inner wall surface 13 is connected to the first inner wall surface 12, and the other end of the second inner wall surface 13 is connected to the vane groove 15. In this way, the arc-shaped second inner wall surface 13 connects the first inner wall surface 12 and the vane groove 15, forming a crescent-shaped discharge groove 14 in the exhaust chamber 112.

[0041] In some embodiments, the second inner wall surface 13 has other shapes, and the second inner wall surface 13 connects the first inner wall surface 12 and the vane groove 15 to form an exhaust groove 14 of other shapes in the exhaust chamber 112.

[0042] In the compression structure of this embodiment, see Figures 1 to 3 The second inner wall surface 13 has a first connecting edge 131 connected to the first inner wall surface 12 and a second connecting edge 132 connected to the sliding vane groove 15. Both the first connecting edge 131 and the second connecting edge 132 are parallel to the axis of the compression chamber 11. The central angle β of the second inner wall surface 13 ranges from 45° to 90°. Alternatively, the shortest distance between the first connecting edge 131 and the axis of the compression chamber 11 is s, and the shortest distance between the second connecting edge 132 and the axis of the compression chamber 11 is S, where s < S. Thus, the distance between the second inner wall surface 13 and the axis of the compression chamber 11 gradually increases from the first connecting edge 131 to the second connecting edge 132. The discharge groove 14 appears crescent-shaped when viewed from above. Simultaneously, as the roller component 2 rotates one revolution, the space of the compression chamber 11 continuously decreases, resulting in a smooth pressure change in the exhaust chamber 112 and preventing over-compression.

[0043] In the compression structure of this embodiment, see Figures 1 to 2The cylinder 1 has an intake groove 16 that communicates with the intake chamber 111. The intake groove 16 is located on the side of the slide plate 3 away from the discharge groove 14, and is recessed into the first inner wall surface 12. In this way, gas enters the intake chamber 111 from the intake groove 16, and then is compressed into the exhaust chamber 112 as the roller component 2 rotates one revolution, and is discharged through the discharge groove 14, completing one compression cycle.

[0044] In the compression structure of this embodiment, see Figure 4 The compression structure includes a preset plane, which is perpendicular to the axis of the compression chamber 11. The cross-sectional area of ​​the inlet groove 16 on the preset plane is B, and the cross-sectional area of ​​the outlet groove 14 on the preset plane is A; wherein A > B. Specifically, the central angle β of the second inner wall surface 13 ranges from 45° to 90° to ensure that the cross-sectional area A of the outlet groove 14 on the preset plane is greater than or equal to the cross-sectional area B of the intake U-shaped groove. This ensures smoother liquid discharge and prevents overcompression.

[0045] In the compression structure of this embodiment, see Figure 5 The first inner wall surface 12 includes a connecting surface 121, and the second inner wall surface 13 includes a first machining surface 133 and a second machining surface 134 located on opposite sides of the first inner wall surface 12; the first machining surface 133, the connecting surface 121, and the second machining surface 134 are distributed sequentially along a direction parallel to the axis of the compression chamber 11. During machining, the second inner wall surface 13 is milled from both sides of the cylinder 1 according to its shape.

[0046] In some embodiments, see Figure 6 The connecting surface 121, the first machining surface 133, and the second machining surface 134 are on the same surface. During machining, the second inner wall surface 13 is milled once on a conventional cylinder according to its shape.

[0047] In some embodiments, see Figure 7 The first machining surface 133 and the connecting surface 121 are on the same surface, and the second machining surface 134 is on one side of the first machining surface 133 and the connecting surface 121. During machining, a partial milling is performed on a conventional cylinder according to the shape of the second inner wall surface 13.

[0048] In the compression structure of this embodiment, see Figures 8 to 11 The cylinder 1 includes an upper cylinder 101 and a lower cylinder 102 that are spaced apart from each other. The compression structure also includes a partition 4, which is located between the upper cylinder 101 and the lower cylinder 102. A first connecting groove 41 is provided on the partition 4. The exhaust chamber 112 on the upper cylinder 101 and the exhaust chamber 112 on the lower cylinder 102 are connected through the first connecting groove 41.

[0049] In the compression structure of this embodiment, see Figures 8 to 11The compression structure further includes: a first fixing component 5, which is connected to the upper cylinder 101, and has a second connecting groove 51 that communicates with the exhaust chamber 112 on the upper cylinder 101; and a second fixing component 6, which is connected to the side of the lower cylinder 102 away from the upper cylinder 101, and has a third connecting groove 61 that communicates with the exhaust chamber 112 on the lower cylinder 102. Thus, the liquid in the exhaust chamber 112 passes sequentially through the discharge groove 14, the first connecting groove 41, the second connecting groove 51, and the third connecting groove 61 before being discharged from the cylinder.

[0050] In the compression structure of this embodiment, see Figures 8 to 11 The partition 4 is provided with a first communicating inner wall surface 42, a second communicating inner wall surface 43, and a third communicating inner wall surface 44. One end of the first communicating inner wall surface 42 is connected to one end of the second communicating inner wall surface 43, one end of the third communicating inner wall surface 44 is connected to the end of the first communicating inner wall surface 42 away from the second communicating inner wall surface 43, and the other end of the third communicating inner wall surface 44 is connected to the end of the second communicating inner wall surface 43 away from the first communicating inner wall surface 42. Both the first communicating inner wall surface 42 and the second communicating inner wall surface 43 are curved surfaces. The first communicating inner wall surface 42 and the first inner wall surface 12 are located on the same curved surface; the second communicating inner wall surface 43 and the second inner wall surface 13 are located on the same curved surface. In this way, during the rotation of the roller component 2, the pressure change in the exhaust chamber 112 is gradual, the liquid discharge is smoother, and overcompression is avoided.

[0051] According to an embodiment of the present invention, a compressor is provided. When the compressor starts working, see [reference needed]. Figure 12 At this time, the compression structure is in its first working state. As the roller component 2 rotates, independent intake chamber 111 and exhaust chamber 112 are formed. (See below) Figure 13 At this point, the compression structure is in its second operating state; as the roller component 2 continues to rotate, the intake chamber 111 gradually enlarges, while the exhaust chamber 112 gradually shrinks, see [reference needed]. Figure 14 At this point, the compression structure is in its third operating state. As the roller component 2 rotates, the intake chamber 111 further expands, and the exhaust chamber 112 further shrinks. (See below) Figure 15 At this point, the compression structure is in its fourth operating state. Roller component 2 rotates to its maximum value in the intake chamber 111 and its minimum value in the exhaust chamber 112. (See below) Figure 16At this time, the compression structure is in the fifth working state. After the fifth working state is completed, the roller component 2 continues to rotate and repeats the process from the first working state to the fifth working state. The exhaust chamber 112 continuously discharges liquid. The cross-sectional area A of the discharge groove 14 on the preset plane is greater than or equal to the cross-sectional area B of the air inlet groove 16 on the preset plane. Furthermore, the cross-section of the discharge groove 14 is crescent-shaped, so the discharge flow rate will not drop sharply, making the discharge very smooth and preventing overcompression.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0054] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0055] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0056] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A compression structure, characterized in that, include: A cylinder (1) has a compression chamber (11) inside; the compression chamber (11) is a cylindrical cavity; The roller component (2) is movably disposed within the compression chamber (11); Sliding vane (3), which is movably disposed in the compression chamber (11), is connected to the roller component (2) to divide the compression chamber (11) into an intake chamber (111) and an exhaust chamber (112). The cylinder (1) includes a first inner wall surface (12) forming the compression chamber (11) and a second inner wall surface (13) connected to the first inner wall surface (12). The second inner wall surface (13) has a discharge groove (14) communicating with the exhaust chamber (112) between it and the compression chamber (11). The second inner wall surface (13) is an arc-shaped surface. Along the extension direction of the second inner wall surface (13), the shortest distance between the second inner wall surface (13) and the axis of the compression chamber (11) gradually... The cylinder (1) is provided with a sliding vane groove (15), and the sliding vane (3) is movably inserted into the sliding vane groove (15). One end of the second inner wall surface (13) is connected to the first inner wall surface (12), and the other end of the second inner wall surface (13) is connected to the sliding vane groove (15). The second inner wall surface (13) has a first connecting edge (131) connected to the first inner wall surface (12) and a second connecting edge (132) connected to the sliding vane groove (15). The first connecting edge (131) and the second connecting edge (132) are both set parallel to the axis of the compression cavity (11), and the value of the central angle β of the second inner wall surface (13) ranges from 45° to 90°. The shortest distance between the first connecting edge (131) and the axis of the compression cavity (11) is s, and the shortest distance between the second connecting edge (132) and the axis of the compression cavity (11) is S, where s < S.

2. The compression structure according to claim 1, characterized in that, The cylinder (1) has an intake groove (16) that communicates with the intake chamber (111). The intake groove (16) is located on the side of the slide (3) away from the discharge groove (14). The intake groove (16) is recessed into the first inner wall surface (12).

3. The compression structure according to claim 2, characterized in that, The compression structure includes a preset plane, which is perpendicular to the axis of the compression chamber (11). The cross-sectional area of ​​the air inlet groove (16) on the preset plane is B, and the cross-sectional area of ​​the discharge groove (14) on the preset plane is A; wherein A > B.

4. The compression structure according to claim 1, characterized in that, The first inner wall surface (12) includes a connecting surface (121), and the second inner wall surface (13) includes a first processing surface (133) and a second processing surface (134) located on opposite sides of the first inner wall surface (12); the first processing surface (133), the connecting surface (121) and the second processing surface (134) are distributed sequentially along a direction parallel to the axis of the compression cavity (11).

5. The compression structure according to claim 1, characterized in that, The cylinder (1) includes an upper cylinder (101) and a lower cylinder (102) arranged at intervals. The compression structure also includes a partition (4). The partition (4) is located between the upper cylinder (101) and the lower cylinder (102). A first connecting groove (41) is provided on the partition (4). The exhaust chamber (112) on the upper cylinder (101) and the exhaust chamber (112) on the lower cylinder (102) are connected through the first connecting groove (41).

6. The compression structure according to claim 5, characterized in that, The compression structure further includes: The first fixing component (5) is connected to the upper cylinder (101), and the first fixing component (5) is provided with a second communicating groove (51) that communicates with the exhaust chamber (112) on the upper cylinder (101). The second fixing component (6) is connected to the side of the lower cylinder (102) away from the upper cylinder (101). The second fixing component (6) is provided with a third connecting groove (61) that communicates with the exhaust chamber (112) on the lower cylinder (102).

7. The compression structure according to claim 6, characterized in that, The partition (4) is provided with a first communicating inner wall surface (42), a second communicating inner wall surface (43) and a third communicating inner wall surface (44); one end of the first communicating inner wall surface (42) is connected to one end of the second communicating inner wall surface (43), one end of the third communicating inner wall surface (44) is connected to the end of the first communicating inner wall surface (42) away from the second communicating inner wall surface (43), and the other end of the third communicating inner wall surface (44) is connected to the end of the second communicating inner wall surface (43) away from the first communicating inner wall surface (42); The first connecting inner wall surface (42) and the second connecting inner wall surface (43) are both arc surfaces. The first connecting inner wall surface (42) and the first inner wall surface (12) are located on the same arc surface; the second connecting inner wall surface (43) and the second inner wall surface (13) are located on the same arc surface.

8. A compressor, comprising a compression structure, characterized in that, The compression structure is the compression structure according to any one of claims 1 to 7.

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