Distributor straight pipe, distributor, and rotary compressor

Abstract

The utility model provides a kind of for the direct pipe of distributor of rotor compressor, the pipe wall of direct pipe of distributor is equipped with at least one through hole, refrigerant can flow through direct pipe of distributor from through hole into pump body;The through hole of the inlet of direct pipe of distributor is most close to the distance of the inlet of direct pipe of distributor greater than or equal to a preset value.The utility model can improve the unstable flow near the mouth of direct pipe of distributor, to weaken the strength of aerodynamic excitation source, to further reduce the pressure pulsation inside distributor, reduce the low-frequency aerodynamic noise caused by the excessive pressure pulsation inside distributor.

Description

Technical Field

[0001] This utility model relates to the field of compressors, and in particular to a liquid distributor straight pipe, a liquid distributor and a rotary compressor. Background Technology

[0002] During the operation of the rotary compressor, the refrigerant in the distributor (also called the receiver) interacts with the inner wall of the distributor, superimposing acoustic modal effects. This amplifies pressure pulsations in certain frequency bands. Under the influence of structural modalities, the distributor vibration is amplified, generating significant low-frequency noise. Furthermore, excessive pressure pulsations can propagate within the air conditioning system, causing other noise problems. Common noise reduction methods involve altering the structural modes of the distributor cylinder to reduce structural resonance, but these methods do not address the root cause of the noise and cannot resolve the acoustic resonance problem. Utility Model Content

[0003] This invention addresses the problem of low-frequency aerodynamic noise caused by excessive internal pressure pulsation in liquid distributors in existing technologies by providing a liquid distributor straight pipe, a liquid distributor, and a rotary compressor. This invention improves the unstable flow near the inlet of the liquid distributor straight pipe, thereby reducing the intensity of the aerodynamic excitation source, and consequently reducing internal pressure pulsation in the liquid distributor, thus lowering the low-frequency aerodynamic noise caused by excessive internal pressure pulsation.

[0004] To achieve the above and other related objectives, this utility model provides a distributor straight pipe for a rotary compressor, wherein: the pipe wall of the distributor straight pipe is provided with at least one through hole, through which refrigerant can flow into the pump body; the distance between the center of the through hole closest to the inlet of the distributor straight pipe and the inlet of the distributor straight pipe is greater than or equal to a preset value.

[0005] Optionally, the distance between the center of the through hole closest to the straight inlet of the dispenser and the straight inlet of the dispenser is greater than or equal to three-quarters of the diameter of the through hole.

[0006] Optionally, the diameter of the through hole and the inner diameter of the straight tube of the distributor satisfy the following relationship:

[0007] 0.05D≤d≤0.85D;

[0008] In the above formula, D represents the inner diameter of the straight tube of the distributor, and d represents the diameter of the through hole.

[0009] Optionally, there are multiple through holes, which are distributed along the axial direction of the straight tube of the distributor.

[0010] Optionally, there are multiple through holes, which are distributed circumferentially around the straight tube of the distributor.

[0011] Optionally, the plurality of through holes are arranged opposite each other in the radial direction of the straight tube of the dispenser.

[0012] Optionally, the through holes are evenly distributed.

[0013] Optionally, the shape of the through hole includes circular, square, or oblong.

[0014] This utility model further provides a liquid dispenser, which includes the liquid dispenser straight tube described in any of the above claims.

[0015] The present invention further provides a rotary compressor, wherein the rotary compressor includes the liquid separator described in any of the above claims.

[0016] Compared with the prior art, the liquid distributor straight pipe, liquid distributor and rotary compressor provided by this utility model have the following advantages:

[0017] The distributor straight pipe provided by this utility model has at least one through hole in its pipe wall. Refrigerant flows through the through hole into the pump body, thereby improving the unstable flow near the inlet of the distributor straight pipe. The distance between the center of the through hole closest to the inlet of the distributor straight pipe and the inlet is greater than or equal to a preset value. This allows the fluid to stabilize after entering the distributor straight pipe, forming a more stable flow state, before being diverted or released through the through hole, effectively reducing the negative impact of unstable flow. In summary, the distributor straight pipe provided by this utility model can improve the unstable flow near the inlet of the distributor straight pipe, thereby reducing the intensity of the aerodynamic excitation source, and thus reducing the pressure pulsation inside the distributor, reducing the low-frequency aerodynamic noise caused by excessive internal pressure pulsation.

[0018] Furthermore, the distance between the center of the through-hole closest to the straight inlet of the distributor and the inlet of the distributor is greater than or equal to three-quarters of the diameter of the through-hole. Setting the distance between the through-hole and the straight inlet of the distributor based on the size of the through-hole not only provides a systematic and standardized proportional reference, but also ensures that the position of the through-hole avoids the antinodes or nodes of the dominant frequency sound wave, thus better preventing low-frequency resonance and further reducing low-frequency aerodynamic noise.

[0019] Furthermore, by adopting a design method in which the diameter of the through hole and the inner diameter of the straight tube of the distributor satisfy the relationship 0.05D≤d≤0.85D (where D represents the inner diameter of the straight tube of the distributor and d represents the diameter of the through hole), it is possible to avoid excessive flow resistance or blockage due to the through hole diameter being too small, ensuring sufficient flow area to disperse the pressure pulsation energy inside the straight tube of the distributor; and it is also possible to prevent the through hole diameter from being too large, thus damaging the integrity of the main structure of the straight tube of the distributor and avoiding severely uneven flow velocity distribution.

[0020] Furthermore, by adopting a design in which multiple through holes are distributed axially along the straight pipe of the distributor or circumferentially around the straight pipe of the distributor, the pressure pulsation energy generated by the refrigerant during the flow process can be dissipated step by step, thereby reducing the source of low-frequency aerodynamic noise.

[0021] Furthermore, by setting two opposing through holes in the radial direction of the distributor's straight tube, the refrigerant flow can be more evenly distributed in the radial direction, avoiding the formation of local high-pressure zones and thus reducing the source of low-frequency noise. Moreover, multiple reflection points can be formed inside the distributor's straight tube, disrupting the conditions for standing wave formation and suppressing resonance. Additionally, symmetrical openings during processing make it easier to ensure precision, improving production efficiency and consistency.

[0022] Since the liquid distributor and rotary compressor provided by this utility model are based on the same concept as the liquid distributor straight pipe provided by this utility model, the liquid distributor and rotary compressor provided by this utility model have at least all the advantages of the liquid distributor straight pipe provided by this utility model. For details on the beneficial effects of the liquid distributor and rotary compressor provided by this utility model, please refer to the above description of the beneficial effects of the liquid distributor straight pipe provided by this utility model. It will not be repeated here. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the straight tube of the dispenser inside the dispenser according to one embodiment of the present invention;

[0024] Figure 2 This is a front view of the straight tube of the dispenser inside the dispenser according to one embodiment of the present invention;

[0025] Figure 3 This is a top view of the straight tube of the dispenser inside the dispenser according to one embodiment of the present invention;

[0026] Figure 4 This is a side view of the straight tube of the dispenser inside the dispenser according to one embodiment of the present invention;

[0027] Figure 5A side view of the straight tube of the dispenser inside the dispenser, provided in another embodiment of the present invention;

[0028] Figure 6 A front view of the straight tube of the dispenser inside the dispenser, provided in another embodiment of the present invention;

[0029] Figure 7 A top view of the straight tube of the dispenser inside the dispenser, provided in another embodiment of this utility model;

[0030] Figure 8 This is a front view of the straight tube of the dispenser inside the dispenser, according to another embodiment of the present invention.

[0031] Among them, the appendix Figures 1-8 The annotations in the attached figures are explained as follows:

[0032] 10 - Dispenser, 100 - Dispenser straight tube, 101 - Through hole. Detailed Implementation

[0033] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the liquid separator straight pipe, liquid separator, and rotary compressor proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the purpose of illustrating this utility model. Please refer to the drawings to make the purpose, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, provided that the effects and purposes achieved by this utility model are the same or similar, should still fall within the scope of the technical content disclosed in this utility model. Specific design features of this utility model disclosed herein, including, for example, specific dimensions, orientations, positions, and shapes, will be determined in part by the specific application and usage environment. Furthermore, in the embodiments described below, the same reference numerals are sometimes used across different figures to denote the same parts or parts having the same function, and their repeated descriptions are omitted. In this specification, similar reference numerals and letters are used to denote similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0034] The core idea of ​​this utility model is to provide a liquid distributor straight pipe, a liquid distributor and a rotary compressor to solve the problem of low-frequency aerodynamic noise caused by excessive internal pressure pulsation of the liquid distributor.

[0035] To achieve the above-mentioned concept, one embodiment of this utility model provides a straight pipe for a distributor in a rotary compressor. For example, please refer to... Figure 1 , Figure 1 This is a schematic diagram showing the structure of a distributor with a straight tube installed inside the distributor, according to one embodiment of the present invention. Figure 1 It can be seen that the pipe wall of the distributor straight pipe 100 is provided with at least one through hole 101, through which the refrigerant can flow into the pump body. The distance between the center of the through hole 101 closest to the inlet of the distributor straight pipe 100 and the inlet of the distributor straight pipe 100 is greater than or equal to a preset value.

[0036] Therefore, the refrigerant first forms a relatively stable flow state after entering the distributor straight pipe 100, and then is diverted or pressure released through the through hole 101, which can effectively reduce the negative impact of unstable flow. In summary, the distributor straight pipe 100 provided by this utility model can improve the unstable flow near the pipe opening of the distributor straight pipe 100, reduce the internal pressure pulsation of the distributor 10, and reduce the low-frequency aerodynamic noise caused by excessive internal pressure pulsation of the distributor 10.

[0037] For further preferred options, please refer to [link / reference]. Figure 1 The diameter of the through-hole 101 is d, and the distance between the center of the through-hole 101 closest to the inlet of the distributor straight tube 100 and the inlet of the distributor straight tube 100 is L. L and d satisfy: L is greater than or equal to three-quarters of d (i.e., L ≥ 0.75d). Limiting the distance between the through-hole 101 and the distributor straight tube 100 based on the size of the through-hole 101 not only provides a system reference setting but also ensures that the position of the through-hole 101 avoids the antinodes or nodes of the dominant frequency sound wave, thus better preventing low-frequency resonance and further reducing low-frequency aerodynamic noise.

[0038] It should be noted that those skilled in the art should understand that the through hole 101 and the inlet of the liquid dispenser straight tube 100 should maintain a certain distance. This minimum distance is not set with reference to the aperture of the through hole 101. In some other exemplary embodiments (for example, when the through hole 101 does not have the concept of aperture), it can also be set according to the inner diameter of the liquid dispenser straight tube 100.

[0039] For example, in some of the exemplary embodiments, please continue to refer to Figure 1The inner diameter of the straight tube 100 of the distributor is D, and D and d satisfy: 0.05D≤d≤0.85D. This setting can avoid excessive flow resistance or blockage due to the small diameter of the through hole 101, ensuring sufficient flow area to disperse the pressure pulsation energy inside the straight tube 100 of the distributor; it can also prevent the large diameter of the through hole 101 from damaging the integrity of the main structure of the straight tube 100 of the distributor and avoid severe uneven flow velocity distribution.

[0040] For example, in some exemplary embodiments, please refer to Figure 2 , Figure 2 This is a front view of the straight tube of the dispenser inside the dispenser, according to one embodiment of the present invention. Figure 2 As can be seen, multiple through holes 101 are provided, and the multiple through holes 101 are distributed along the axial direction of the straight tube 100 of the distributor; in some other exemplary embodiments, please refer to Figure 3 , Figure 3 A top view of the straight tube of the dispenser within the dispenser, according to another embodiment of the present invention. Figure 3 As can be seen, multiple through holes 101 are provided, and these multiple through holes 101 are distributed circumferentially around the straight pipe 100 of the distributor. This arrangement of the through holes 101 allows the pressure pulsation energy generated by the refrigerant during flow to be dissipated step by step, thereby reducing the source of low-frequency aerodynamic noise.

[0041] It should be noted that those skilled in the art should understand that Figures 2-3 The distribution of the through holes 101 on the straight tube 100 of the dispenser shown is merely an exemplary illustration of a preferred embodiment and not a limitation of this utility model. In some other exemplary embodiments, the through holes may also adopt a combination of the above two distribution methods.

[0042] For example, in some exemplary embodiments, please refer to Figure 4 , Figure 4 This is a side view of the straight tube of the dispenser inside the dispenser, according to one embodiment of the present invention. Figure 4 It can be seen that the plurality of through holes 101 are arranged opposite each other in the radial direction of the straight tube 100 of the distributor (exemplary, Figure 4Taking one set of relatively opposite through holes as an example, it can be understood that a through hole 101 is set at a position symmetrically along the diameter of the distributor straight tube 100. This arrangement makes the refrigerant flow more uniformly distributed in the radial direction, avoiding the formation of local high-pressure areas and thus reducing the source of low-frequency noise. Moreover, this arrangement can create multiple reflection points inside the distributor straight tube 100, disrupting the conditions for standing wave formation and thus suppressing resonance. In addition, symmetrical openings make it easier to ensure accuracy during processing, which can improve production efficiency and consistency.

[0043] It should be noted that those skilled in the art should understand that in other embodiments, such as Figure 5 As shown, Figure 5 This is a side view of the straight tube of the dispenser provided in another embodiment of the present invention. The through hole 101 may not have a corresponding through hole 101 in the radial direction of the straight tube 100 of the dispenser, and a single through hole 101 is provided at one end, that is, an asymmetrical arrangement is adopted.

[0044] For example, in some of the exemplary embodiments, please continue to refer to Figures 2-3 ,from Figures 2-3 It can be seen that the multiple through holes 101 are evenly distributed along the axis or circumference of the distributor straight pipe 100, meaning that the spacing between each pair of through holes 101 is equal. This arrangement allows the refrigerant to flow evenly through the through holes 101 inside the distributor straight pipe 100, avoiding uneven flow velocity distribution, which is a relatively reliable approach. It should be noted that those skilled in the art should understand that in other embodiments, the through holes can also be distributed non-uniformly. For example, if the dominant frequency energy of the pressure pulsation inside the distributor straight pipe 100 is concentrated in a specific frequency band, the distribution of the through holes 101 can be adjusted according to the density of the dominant frequency energy of the pressure pulsation, such as... Figure 6 and Figure 7 As shown.

[0045] For example, in some exemplary embodiments, please refer to Figure 8 , Figure 8 This is a front view of the straight tube of the dispenser inside the dispenser according to another embodiment of the present invention. Figure 8 As can be seen, the shape of the through hole 101 includes circular, square, or oblong shapes. A circular hole is preferred, as it is the most common shape, easy to manufacture, and provides uniform stress distribution. Of course, a square hole can also be used depending on the actual application, to bring greater flow disturbance, or an oblong hole, such as an oval or elliptical shape, can be used to achieve directional noise reduction and flow control, meeting customized needs. As those skilled in the art will understand, the through hole 101 can also be fan-shaped or other regular or irregular shapes.

[0046] In summary, the distributor straight pipe, distributor, and rotary compressor provided by this utility model have the following advantages: The distributor straight pipe provided by this utility model, by having at least one through hole in the pipe wall, allows the refrigerant to flow through the through hole into the pump body, thereby improving the unstable flow near the inlet of the distributor straight pipe. The distance between the center of the through hole closest to the inlet of the distributor straight pipe and the inlet of the distributor straight pipe is greater than or equal to a preset value, which allows the fluid to stabilize after entering the distributor straight pipe, forming a relatively stable flow state, before being diverted or pressure released through the through hole, effectively reducing the negative impact of unstable flow. Furthermore, the distributor straight pipe provided by this utility model can improve the unstable flow near the inlet of the distributor straight pipe, reduce internal pressure pulsation of the distributor, and reduce low-frequency aerodynamic noise caused by excessive internal pressure pulsation of the distributor.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A straight pipe for a distributor in a rotary compressor, characterized in that, The straight pipe of the distributor has at least one through hole in its wall, through which refrigerant can flow into the pump body of the rotor compressor; the distance between the center of the through hole closest to the inlet of the straight pipe and the inlet of the straight pipe is greater than or equal to a preset value.

2. The straight tube of the dispenser as described in claim 1, characterized in that, The distance between the center of the through hole closest to the straight inlet of the dispenser and the straight inlet of the dispenser is greater than or equal to three-quarters of the diameter of the through hole.

3. The straight tube of the dispenser as described in claim 1, characterized in that, The diameter of the through hole and the inner diameter of the straight tube of the distributor satisfy the following relationship: 0.05D≤d≤0.85D; In the above formula, D represents the inner diameter of the straight tube of the distributor, and d represents the diameter of the through hole.

4. The straight tube of the dispenser as described in claim 1, characterized in that, There are multiple through holes, which are distributed along the axial direction of the straight tube of the distributor.

5. The straight tube of the dispenser as described in claim 1, characterized in that, There are multiple through holes, which are distributed circumferentially around the straight tube of the distributor.

6. The straight tube of the dispenser as described in claim 5, characterized in that, The plurality of through holes are arranged in pairs opposite each other in the radial direction of the straight tube of the distributor.

7. The straight tube of the dispenser as described in any one of claims 4 to 6, characterized in that, The multiple through holes are evenly distributed.

8. The straight tube of the dispenser as described in claim 1, characterized in that, The shape of the through hole can be circular, square, or oblong.

9. A liquid dispenser, characterized in that, Includes the straight tube of the dispenser as described in any one of claims 1 to 8.

10. A rotary compressor, characterized in that, Includes the liquid dispenser as described in claim 9.

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