Compression assembly, compressor and refrigeration equipment

Abstract

The utility model discloses a compression assembly, compressor and refrigeration equipment, relates to compressor technical field, wherein the compression assembly includes cylinder, piston and slip sheet, the cylinder is provided with slip sheet groove, the piston is located in the cylinder, the peripheral wall of the piston is provided with groove, the groove includes arc groove and open slot, and the open slot is provided with the slip sheet groove. The circular arc groove is communicated with the peripheral wall of the piston through the open groove, the minimum width of the connecting position of the circular arc groove and the open groove is t, and the diameter of the circular arc groove is D. The sliding piece comprises a main body section, a connecting section and a cylindrical section which are sequentially connected, the main body section is movably connected to the sliding piece groove, and the cylindrical section is movably connected to the connecting section. The cylindrical section is movably connected into the arc groove, and the minimum width of the connecting section is d. According to the technical scheme, noise generated in the operation process of the compression assembly is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of compressors, and in particular to a compression assembly, a compressor, and a refrigeration device. Background Technology

[0002] Rotary compressors are widely used due to their high efficiency, compact structure, small size, and light weight, for example, in the interior of household air conditioners.

[0003] The compression assembly is a crucial component of a rotary compressor. Existing compression assemblies primarily consist of a cylinder, piston, vane, crankshaft, and springs. The piston is located inside the cylinder and is mounted axially on the crankshaft. The cylinder has a spring hole and a vane slot. A spring is installed in the spring hole, and the vane is placed in the vane slot, with its tail end compressible to the spring. Within the compression chamber, under the force of the spring at its tail end, the vane's head maintains close contact with the piston, forming a dynamic seal. The vane divides the cylinder interior into an intake chamber and a compression chamber. Driven by the crankshaft, the processes of intake, compression, and exhaust are completed.

[0004] However, since the contact between the vane and the piston relies on spring force and pressure difference, the vane and piston are prone to disengage when the operating pressure difference is small. When the piston and vane contact again, they collide due to the difference in speed, producing a harsh noise and thus reducing the user experience. Utility Model Content

[0005] The main purpose of this invention is to provide a compression assembly, a compressor, and a refrigeration device, which aims to reduce the noise generated during the operation of the compression assembly.

[0006] To achieve the above objectives, the compression component proposed in this utility model includes:

[0007] The cylinder is provided with a sliding vane groove;

[0008] A piston is located inside the cylinder. The outer peripheral wall of the piston is provided with a groove, which includes an arc groove and an open groove. The arc groove is connected to the outer peripheral wall of the piston through the open groove. The minimum width at the connection between the arc groove and the open groove is t, and the diameter of the arc groove is D.

[0009] A slider, comprising a main body segment, a connecting segment, and a cylindrical segment connected in sequence, wherein the main body segment is movably connected to the slider groove, the cylindrical segment is movably connected within the arc groove, and the minimum width of the connecting segment is d.

[0010] In one implementation, t / D < 0.9.

[0011] In one embodiment, Dt > 0.1 mm.

[0012] In one embodiment, 0.5 <d / D<0.9。

[0013] In one embodiment, Dd > 0.5 mm.

[0014] In one embodiment, the cylindrical segment has a planar segment at the end opposite to the connecting segment.

[0015] In one embodiment, the length of the planar segment along the thickness direction of the slider is L, L <d。

[0016] In one embodiment, the width of the opening groove is increased in the direction away from the arc groove.

[0017] This invention also proposes a compressor, including the compression assembly described above.

[0018] This utility model also proposes a refrigeration device, including the compressor described above.

[0019] The compression assembly in this invention includes a cylinder, a piston, and a sliding vane. The cylinder has a sliding vane groove, and the outer peripheral wall of the piston has a groove, which includes an arc groove and an open groove. The arc groove is connected to the outer peripheral wall of the piston through the open groove. The sliding vane includes a main body section, a connecting section, and a cylindrical section connected in sequence. The main body section is movably connected to the sliding vane groove, and the cylindrical section is movably connected to the arc groove. The sliding vane divides the inside of the cylinder into an intake chamber and a compression chamber. Then, driven by the piston, the sliding vane completes the process of intake, compression, and exhaust. Compared with the prior art, where the sliding vane maintains close contact with the piston through the action of a spring at its tail end, this invention maintains close contact between the sliding vane and the piston by movably connecting the cylindrical section of the sliding vane to the arc groove. This eliminates the need for a spring in the main body section of the sliding vane, thereby reducing the manufacturing difficulty and cost of the compression assembly. Meanwhile, since the sliding vane and piston are connected by a cylindrical section and an arc-shaped groove, the piston and vane are less likely to disengage. The cylindrical section only rotates within a limited range within the arc-shaped groove, thus reducing noise generated between the vane and piston during the compression assembly's movement and improving the user experience. Furthermore, the minimum width at the connection between the arc-shaped groove and the opening groove is t, the diameter of the arc-shaped groove is D, and the minimum width of the connecting section is d. This allows for the reasonable setting of the minimum width of the connecting section and the diameter of the arc groove, ensuring that the connecting section is strong enough to prevent fatigue fracture, while reducing the gap between the connecting section and the arc groove wall, thus improving the energy efficiency of the compression assembly. At the same time, by reasonably setting the width t at the connection between the arc groove and the open groove, the structural strength at the connection between the arc groove and the open groove is improved, reducing the possibility of groove collapse and extending the service life of the compression assembly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the compression component provided by this utility model;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 for Figure 1 Schematic diagram of the middle piston;

[0024] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0025] Figure 5 for Figure 1 A schematic diagram of the middle slider.

[0026] Explanation of icon numbers:

[0027] 10. Cylinder; 11. Sliding vane groove; 20. Piston; 21. Groove; 211. Arc groove; 212. Opening groove; 30. Sliding vane; 31. Main body section; 32. Connecting section; 33. Cylindrical section; 331. Planar section.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Reference Figures 1 to 5 This utility model proposes a compression component, comprising:

[0033] Cylinder 10, wherein the cylinder 10 is provided with a sliding vane groove 11;

[0034] A piston 20 is located inside the cylinder 10. The outer peripheral wall of the piston 20 is provided with a groove 21. The groove 21 includes an arc groove 211 and an open groove 212. The arc groove 211 is connected to the outer peripheral wall of the piston 20 through the open groove 212. The minimum width at the connection between the arc groove 211 and the open groove 212 is t, and the diameter of the arc groove 211 is D.

[0035] The slider 30 includes a main body segment 31, a connecting segment 32, and a cylindrical segment 33 connected in sequence. The main body segment 31 is movably connected to the slider groove 11, and the cylindrical segment 33 is movably connected within the arc groove 211. The minimum width of the connecting segment 32 is d.

[0036] The compression assembly in this utility model includes a cylinder 10, a piston 20, and a sliding vane 30. The cylinder 10 has a sliding vane groove 11, and the outer peripheral wall of the piston 20 has a groove 21. The groove 21 includes an arc groove 211 and an open groove 212. The arc groove 211 communicates with the outer peripheral wall of the cylinder 10 through the open groove 212. The sliding vane 30 includes a main body section 31, a connecting section 32, and a cylindrical section 33 connected in sequence. The main body section 31 is movably connected to the sliding vane groove 11, and the cylindrical section 33 is movably connected within the arc groove 211. The sliding vane 30 divides the interior of the cylinder 10. The compressor has an intake chamber and a compression chamber. The vane 30, driven by the piston 20, completes the intake, compression, and exhaust processes. Compared to existing technologies where the vane 30 maintains close contact with the piston 20 through a spring at its tail end, this invention uses a movable connection of the cylindrical section 33 of the vane 30 within the arc groove 211. This ensures constant close contact between the vane 30 and the piston 20, eliminating the need for a spring in the main body section 31 of the vane 30 and reducing manufacturing difficulty and cost. Furthermore, because the vane 30 and piston 20 are connected by the cylindrical section 33 and the arc groove 211, they are less prone to disengagement. The cylindrical section 33 only rotates within the arc groove 211, reducing noise generated between the vane 30 and piston 20 during compressor operation and improving user experience.

[0037] Furthermore, the minimum width at the connection between the arc groove 211 and the open groove 212 is t, the diameter of the arc groove 211 is D, and the minimum width of the connecting section 32 is d. This allows for the reasonable setting of the minimum width of the connecting section 32 and the diameter of the arc groove 211, ensuring that the connecting section 32 does not suffer fatigue fracture, while reducing the gap between the connecting section 32 and the wall of the arc groove 211, thus improving the energy efficiency of the compression assembly. Furthermore, by reasonably setting the minimum width t at the connection between the arc groove 211 and the opening groove 212, the structural strength at the connection between the arc groove 211 and the opening groove 212 is improved, reducing the possibility of groove 21 collapse and extending the service life of the compression assembly. However, if... If td is too small and / or D is too large, td will result in too small a gap between the connecting section 32 and the opening groove 212, which will limit the rotation range of the piston 20 during its rotation within the cylinder 10, and may even lead to excessive stress between the sliding vane 30 and the piston 20, thus increasing the risk of breakage of the connecting section 32. If D is too large, it will result in too large a gap between the wall of the arc groove 211 and the cylindrical section 33, thereby reducing the energy efficiency of the compression assembly.

[0038] Meanwhile, in the existing technical solution, since the sliding vane 30 is kept in close contact with the outer peripheral surface of the piston 20 by the action of a spring, there is a risk that the sliding vane 30 may detach from the piston 20 during the high-speed operation of the compression assembly. However, in the technical solution of this application, the piston 20 and the sliding vane 30 are limited by the cylindrical section 33 by the arc groove 211. During the movement of the piston 20, the sliding vane 30 will move along the length direction of the sliding vane groove 11. Therefore, the risk of the sliding vane 30 detaching from the piston 20 during the high-speed operation of the compressor is reduced, thereby improving the stability and reliability of the compression assembly.

[0039] Furthermore, since the piston 20 in the traditional compression assembly may move relative to the vane 30, and the sides of the vane 30 are the high temperature and high pressure on the exhaust side and the low temperature and low pressure on the suction side, the movement of the piston 20 relative to the vane 30 will cause the high temperature on the exhaust side to be transferred to the low temperature, and the low temperature on the suction side will also be transferred to the high temperature, resulting in a decrease in the compressor's cooling capacity and an increase in the intake force. When the oil on the piston 20 moves from the high pressure side to the low pressure side with the rotation of the piston 20, the pressure on the surface of the oil changes rapidly from high pressure to low pressure. Since the internal pressure of the liquid cannot change in time, the oil will explode from the inside to the outside, forming an oil mist. This oil mist will be discharged from the pump body with the next exhaust, ultimately causing a significant increase in the compressor's oil discharge. Since the piston 20 and the vane 30 in this application only rotate relative to the groove 21, the groove 21 separates the suction chamber (low-pressure chamber) and the compression chamber (high-pressure chamber) on both sides of the vane 30. And the vane 30 moves under the drive of the piston 20, so the vane 30 and the piston 20 always maintain close contact, thereby greatly reducing the possibility of oil flowing from the high-pressure side to the low-pressure side, and thus greatly reducing the generation of oil mist, and thus reducing the amount of oil discharged by the compressor.

[0040] Specifically, t / D < 0.9. Understandably, if t / D ≥ 0.9, the minimum width t at the connection between the arc groove 211 and the opening groove 212 will be too large compared to the diameter of the arc groove 211. This results in an excessively large gap between the slider 30 and the groove wall of the arc groove 211, increasing the risk of the slider 30 disengaging from the arc groove 211 and reducing the energy efficiency of the compression assembly. Therefore, by reasonably setting t and D, the gap between the slider 30 and the groove wall of the arc groove 211 can be reduced, improving the stability of the slider 30 during operation and increasing the energy efficiency of the compression assembly.

[0041] Furthermore, D - t > 0.1 mm. If D - t ≤ 0.1 mm, it indicates that the gap between t and D is too small. At this time, the opening at the connection between the opening groove 212 and the circular arc groove 211 is too large, even approaching the semi - circle of the circular arc groove 211, which makes it difficult for the sliding piece 30 to be stably limited within the circular arc groove 211, and further increases the risk of the sliding piece 30 disengaging from the circular arc groove 211. Therefore, by setting D - t > 0.1 mm, the risk of the sliding piece 30 disengaging from the circular arc groove 211 is reduced, the reliability of the connection between the sliding piece 30 and the piston to be translated as "20" is improved, and the stability of the operation of the compression assembly is enhanced.

[0042] Specifically, 0.5 < d / D < 0.9. Among them, if d / D ≤ 0.5, it indicates that the minimum width of the connecting section 32 is too small compared to the diameter of the circular arc groove 211, which easily causes the connecting section 32 of the sliding piece 30 to break, and further reduces the service life of the sliding piece 30. If d / D > 0.9, it will cause the gap of the cylindrical section 33 within the circular arc groove 211 to become very small. As a result, during the reciprocating motion of the piston 20, the frictional force between the cylindrical section 33 of the sliding piece 30 and the wall of the circular arc groove 211 will increase significantly. This will increase the resistance of the piston 20's movement, reduce the mechanical efficiency of the compression assembly, and at the same time, the increased frictional force will also reduce the service life of the sliding piece 30 and the piston 20. Furthermore, when there are certain errors in the processing accuracy or minor deformations occur during the operation of the compression assembly (such as thermal expansion, etc.), the cylindrical section 33 is very likely to get stuck within the circular arc groove 211, resulting in the compression assembly being unable to work properly. Therefore, by reasonably setting the values of d and D, when the cylindrical section 33 moves within the circular arc groove 211, it can better fill the space of the circular arc groove 211, reducing the possibility of gas leakage from the gap between the circular arc groove 211 and the cylindrical section 33, thereby improving the sealing performance of the compression assembly. At the same time, the movement of the sliding piece 30 within the circular arc groove 211 is relatively stable. The cylindrical section 33 will not wobble within the circular arc groove 211 due to being too loose, nor will it be blocked due to being too tight. During the reciprocating motion of the piston 20, the sliding piece 30 can stably slide within the sliding piece groove 11 and the circular arc groove 211, ensuring the normal operation of the entire compression assembly.

[0043] Furthermore, D - d > 0.5 mm. This shows that there is enough gap between the sliding piece 30 and the circular arc groove 211. During the assembly process, it is more convenient to install the cylindrical section 33 of the sliding piece 30 into the circular arc groove 211, reducing the assembly difficulty and improving the assembly efficiency. At the same time, considering that the compressor may experience component deformations due to factors such as temperature changes and pressure changes during operation. The larger D - d value allows the sliding piece 30 and the circular arc groove 211 to have more space to adapt to these deformations, reducing the possibility of interference between components caused by deformation, thereby improving the reliability of the compression assembly.

[0044] Since the contact between the sliding vane 30 and the piston 20 in the existing technical solution is a line contact, when the sliding vane 30 or the piston 20 is relatively tilted, or due to the temperature difference between the suction and discharge sides, the thermal deformation of the contact positions of the sliding vane 30 and the piston 20 is different, resulting in the connection between the suction and discharge sides of the compressor, which reduces the effective suction volume of the compressor and its capacity. Therefore, in one embodiment, a flat section 331 is provided at one end of the cylindrical section 33 away from the connecting section 32. Thus, the line contact between the sliding vane 30 and the piston 20 is improved to a surface contact, reducing the possibility of air leakage from the high-pressure side to the low-pressure side, and thereby improving the operating efficiency of the compressor. At the same time, the flat section 331 can increase the contact area between the sliding vane 30 and the arc groove 211, thereby improving the stability and reliability of the compression assembly and reducing the vibration and deformation of the sliding vane 30 during operation.

[0045] Further, the length of the flat section 331 in the thickness direction of the sliding vane 30 is L, and L < d. The shorter flat section 331 can reduce the friction area with other components, thereby reducing friction and wear, and further extending the service life of the sliding vane 30 and the piston 20. At the same time, during the operation of the compressor, each component may undergo slight deformation or displacement. The shorter flat section 331 can make the sliding vane 30 more adaptable to these changes, thereby reducing the interference and jamming phenomena caused by deformation between the sliding vane 30 and the piston 20, and further improving the stability of the operation of the compression assembly.

[0046] In one embodiment, the width of the opening groove 212 is set to increase in the direction away from the arc groove 211. It can be understood that when the piston 20 rotates in the cylinder 10, there will be a certain relative rotation between the piston 20 and the sliding vane 30. Therefore, at this time, the width of the opening groove 212 is set to increase in the direction away from the arc groove 211, thereby reducing the restriction of the opening groove 212 on the rotation of the sliding vane 30, and further improving the stability of the movement of the sliding vane 30. The side wall of the opening groove 212 can be linear, arc-shaped, etc.

[0047] The present utility model also proposes a compressor, which includes a motor and a compression assembly. The specific structure of the compression assembly refers to the above embodiments. Since this compressor adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0048] This utility model also proposes a refrigeration device, which can be categorized into compression refrigeration devices, absorption refrigeration devices, vapor jet refrigeration devices, heat pump refrigeration devices, and electric heating refrigeration devices. The refrigeration device mainly includes a motor, compressor, electronic expansion valve, evaporator, condenser, accessories, and piping. Examples include refrigerators and air conditioners. The specific structure of the compressor is as described in the above embodiments. Since the refrigeration device in this utility model adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0049] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A compression component, characterized in that, include: Cylinder (10), wherein the cylinder (10) is provided with a sliding vane groove (11); A piston (20) is located inside the cylinder (10). The outer peripheral wall of the piston (20) is provided with a groove (21). The groove (21) includes an arc groove (211) and an open groove (212). The arc groove (211) is connected to the outer peripheral wall of the piston (20) through the open groove (212). The minimum width at the connection between the arc groove (211) and the open groove (212) is t. The diameter of the arc groove (211) is D. A slider (30) comprises a main body segment (31), a connecting segment (32), and a cylindrical segment (33) connected in sequence. The main body segment (31) is movably connected to the slider groove (11), and the cylindrical segment (33) is movably connected to the arc groove (211). The minimum width of the connecting segment (32) is d.

2. The compression component as described in claim 1, characterized in that, t / D<0.

9.

3. The compression component as described in claim 1, characterized in that, Dt>0.1mm.

4. The compression component as described in claim 1, characterized in that, 0.5 <d / D<0.9。 5. The compression assembly as claimed in claim 1, characterized in that, Dd>0.5mm.

6. The compression assembly as claimed in claim 1, characterized in that, The cylindrical segment (33) has a planar segment (331) at one end away from the connecting segment (32).

7. The compression assembly as claimed in claim 6, characterized in that, The length of the planar segment (331) along the thickness direction of the slider (30) is L, L <d。 8. The compression assembly as claimed in claim 1, characterized in that, The width of the opening groove (212) is increased in the direction away from the arc groove (211).

9. A compressor, characterized in that, Includes the compression component as described in any one of claims 1 to 8.

10. A refrigeration device, characterized in that, Includes the compressor as described in claim 9.

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