compressor
By installing a connecting bracket between the compressor body and the liquid receiver, the modal frequency of the liquid receiver is increased, which solves the problem of low-frequency radiated noise from the compressor and effectively reduces noise.
Patent Information
- Application Number
- CN202010956153.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-09-11
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2040-09-11
AI Technical Summary
The existing compressor has high low-frequency radiated noise due to the connection method between the liquid receiver and the rotary compressor. This is mainly because the support has low tangential stiffness along the compressor, which makes it easy to excite the first and second order modes with low frequencies.
By setting a connecting bracket between the compressor body and the liquid receiver, the connecting bracket includes a first connecting part, a second connecting part, and a transition part, thereby increasing the rigidity of the connecting bracket along the tangential direction of the compressor body and enhancing the first and second order modal frequencies of the liquid receiver to above 3000Hz.
It effectively improves the low-frequency radiated noise problem of the compressor, increases the modal frequency of the liquid receiver, and reduces the excitation of low-frequency noise.
Smart Images
Figure CN114165447B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of refrigeration equipment, in particular to a compressor. BACKGROUND
[0002] In the prior art, the contribution of the liquid accumulator to the noise generated by the rotor compressor is relatively large. The liquid accumulator and the rotor compressor are mainly connected through the combination of a bracket and a clamp rubber pad. Specifically, the clamp rubber pad is sleeved on the part of the compressor cylinder body, the bracket extends along the axial direction of the compressor and is connected with the cylinder part of the liquid accumulator. The bracket has low tangential stiffness along the compressor, so that the first and second order modes of the liquid accumulator are low, generally around 300Hz. The modal frequency is relatively close to the compressor shaft modal, and is more likely to be excited, which easily leads to high low-frequency radiation noise of the compressor. SUMMARY
[0003] The purpose of the present application is to provide a compressor to solve the problem of high low-frequency radiation noise of the compressor.
[0004] To solve the above technical problems, based on one aspect of the present application, a compressor is provided, which comprises a compressor main body, a liquid accumulator and a connecting bracket. The compressor main body is communicated with the liquid accumulator through a compressor suction port. The compressor main body is connected with the liquid accumulator through the connecting bracket.
[0005] The compressor main body has a first top end face away from the compressor suction port along its own axial direction. The liquid accumulator has a second top end face away from the compressor suction port along its own axial direction.
[0006] The connecting bracket comprises a first connecting part connected with the first top end face, a second connecting part connected with the second top end face, and a transition part connecting the first connecting part and the second connecting part respectively.
[0007] Optionally, there is a height difference between the first connecting part and the second connecting part along the axial direction of the compressor main body.
[0008] Optionally, the thickness of the connecting bracket along the axial direction of the compressor main body is not less than 2mm.
[0009] Optionally, the axis of the compressor main body is parallel to the axis of the liquid accumulator, the first top end face is parallel to the second top end face, and the first connecting part is parallel to the second connecting part.
[0010] Optionally, the connecting bracket is a plate-shaped piece, one end of the transition part is connected with the first connecting part, and the other end of the transition part is connected with the second connecting part.
[0011] Optionally, the compressor body has a protrusion part protruding along the axial direction of the compressor body and protruding from the first top end surface, and the first connecting part has an opening end facing away from the second connecting part, and the opening end is connected with a part of the profile of the protrusion part.
[0012] Optionally, the liquid accumulator has an air inlet pipe penetrating through the second top end surface along the axial direction of the liquid accumulator, and the second connecting part has a through hole penetrating through the second connecting part along the axial direction of the liquid accumulator, and the second connecting part is sleeved on the air inlet pipe through the through hole.
[0013] Optionally, the first connecting part is welded with the first top end surface, and the second connecting part is welded with the second top end surface.
[0014] Optionally, the first connecting part has a positioning bump on the side facing the suction port of the compressor, and the positioning bump is used to connect with the first top end surface of the compressor body.
[0015] Optionally, there is a gap between the compressor body and the liquid accumulator in the direction perpendicular to the axial direction of the compressor body, and the distance is not greater than 5 mm.
[0016] In summary, in the compressor provided by the present application, the compressor comprises a compressor body, a liquid accumulator and a connecting bracket, the compressor body is communicated with the liquid accumulator through a suction port of the compressor, and the compressor body is connected with the liquid accumulator through the connecting bracket; the compressor body has a first top end surface facing away from the suction port of the compressor along the axial direction of the compressor body, and the liquid accumulator has a second top end surface facing away from the suction port of the compressor along the axial direction of the liquid accumulator; the connecting bracket comprises a first connecting part connected with the first top end surface, a second connecting part connected with the second top end surface, and a transition part connecting the first connecting part and the second connecting part respectively. By connecting the first connecting part of the connecting bracket with the first top end surface of the compressor body and connecting the second connecting part with the second top end surface of the liquid accumulator, the rigidity of the connecting bracket along the tangential direction of the compressor body can be improved, the first and second order modal frequencies of the liquid accumulator are increased to above 3000 Hz, and thus the low-frequency radiation noise of the compressor body is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Those skilled in the art should understand that the provided drawings are used to better understand the present application, and do not constitute any limitation on the scope of the present application. Among them:
[0018] Figure 1 is a schematic diagram of a compressor according to an embodiment of the present application;
[0019] Figure 2 is a schematic diagram of a compressor according to an embodiment of the present application in the front view;
[0020] Figure 3 is a schematic view of a connecting bracket according to an embodiment of the present application;
[0021] Figure 4 is a schematic view of a connecting bracket according to an embodiment of the present application from a top direction;
[0022] Figure 5 is a schematic view of a connecting bracket according to an embodiment of the present application from a front direction.
[0023] In the drawings:
[0024] 10 - compressor body; 11 - first top end surface; 12 - protruding portion; 13 - compressor suction port; 20 - liquid accumulator; 21 - second top end surface; 22 - intake pipe; 30 - connecting bracket; 31 - first connecting portion; 310 - open end; 311 - positioning protrusion; 32 - second connecting portion; 320 - through hole; 33 - transition portion. DETAILED DESCRIPTION
[0025] In order to make the objects, advantages and features of the present application more clearly, the following further describes the present application in conjunction with the drawings and specific embodiments. It should be noted that the drawings are all very simplified and not drawn in proportion, and are only used to facilitate and clearly assist the purpose of describing the embodiments of the present application. In addition, the structures shown in the drawings are often a part of the actual structures. In particular, the emphasis of each drawing needs to be different, and sometimes different proportions are used.
[0026] As used in the present application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in the sense of "and / or", the term "several" is generally used in the sense of "at least one", the term "at least two" is generally used in the sense of "two or more", and in addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or at least two of the features, unless the content clearly indicates otherwise.
[0027] The present application provides a compressor to solve the problem of high low-frequency radiation noise of the compressor.
[0028] The following description is made with reference to the drawings.
[0029] Reference is made to Figures 1 to 5 , wherein, Figure 1 is a schematic view of a compressor according to an embodiment of the present application; Figure 2 is a schematic view of a compressor according to an embodiment of the present application from a front direction; Figure 3is a schematic view of a connecting bracket according to an embodiment of the present application; Figure 4 is a schematic view of a connecting bracket according to an embodiment of the present application from a top direction; Figure 5 is a schematic view of a connecting bracket according to an embodiment of the present application from a front direction.
[0030] As shown in Figure 1 and Figure 2 , the present embodiment provides a compressor, which comprises a compressor body 10, a liquid accumulator 20 and a connecting bracket 30, the compressor body 10 is communicated with the liquid accumulator 20 through a compressor suction port 13, the compressor body 10 is connected with the liquid accumulator 20 through the connecting bracket 30; the compressor body 10 has a first top end surface 11 away from the compressor suction port 13 along its own axial direction, the liquid accumulator 20 has a second top end surface 21 away from the compressor suction port 13 along its own axial direction; the connecting bracket 30 comprises a first connecting part 31 connected with the first top end surface 11, a second connecting part 32 connected with the second top end surface 21, and a transition part 33 connecting the first connecting part 31 and the second connecting part 32 respectively. In an exemplary embodiment, the compressor body 10 and the liquid accumulator 20 are respectively a cylinder; the first connecting part 31 is fixedly connected with the first top end surface 11, and the first connecting part 31 is fixedly connected with the second top end surface 21, such as fixedly connected by welding, so that the compressor body 10 and the liquid accumulator 20 are connected more firmly through the connecting bracket 30. Further, referring to Figure 5 , the first connecting part 31 has positioning protrusions 311 on the side facing the first top end surface 11 of the compressor body 10, and the number of the positioning protrusions 311 is at least two, the positioning protrusions 311 are used to connect with the first top end surface 11, preferably, the positioning protrusions 311 are connected with the first top end surface 11 through pressure welding. In the compressor as described above, by setting the connecting bracket 30, firstly, the connecting bracket 30 plays a role in connecting the compressor body 10 and the liquid accumulator 20 to fix the two, further, the first connecting part 31 of the connecting bracket 30 is connected with the first top end surface 11 of the compressor body, and the second connecting part 32 is connected with the second top end surface 21 of the liquid accumulator, which can improve the rigidity of the connecting bracket 30 along the tangential direction of the compressor body 10, so that the first and second order modal frequencies of the liquid accumulator 20 are increased to above 3000 Hz, thereby improving the low frequency radiation noise of the compressor body 10. It should be noted that the first order modal is when the excitation frequency of external force is equal to the natural frequency of the object, and the second order modal is when the excitation frequency of external force is twice the natural frequency of the object.
[0031] Preferably, the connecting bracket 30 is a sheet metal part, which is formed by a comprehensive cold working process of a metal sheet, so that the rigidity of the connecting bracket 30 along its own extension direction is much greater than the rigidity along its own axial direction. It should be noted that the rigidity refers to the ability of a material or structure to resist elastic deformation under stress.
[0032] Further, the first connecting portion 31 and the second connecting portion 32 are not coplanar, i.e. there is a height difference between the first connecting portion 31 and the second connecting portion 32 along the axial direction of the compressor body 10. In one exemplary embodiment, the distance between the first connecting portion 31 and the compressor suction port 13 along the axial direction of the compressor body 10 is smaller than the distance between the second connecting portion 32 and the compressor suction port 13 along the axial direction of the compressor body 10, i.e. the axial distance between the first top end face 11 and the compressor suction port 13 is smaller than the axial distance between the second top end face 21 and the compressor suction port 13. In another exemplary embodiment, the distance between the first connecting portion 31 and the compressor suction port 13 along the axial direction of the compressor body 10 is larger than the distance between the second connecting portion 32 and the compressor suction port 13 along the axial direction of the compressor body 10.
[0033] Further, the thickness of the connecting bracket 30 along the axial direction of the compressor body 10 is not less than 2mm. In this way, the rigidity of the connecting bracket 30 along the direction perpendicular to the axial direction of the compressor body 10 can meet the actual assembly requirements.
[0034] Optionally, the axis of the compressor body 10 is parallel to the axis of the liquid reservoir 20, the first top end face 11 is parallel to the second top end face 21, and the first connecting portion 31 is parallel to the second connecting portion 32. It should be noted that the axis of the compressor body 10 and the axis of the liquid reservoir 20 can also have a small angle (e.g. +-5°), which can be ignored, and it should be understood that the axis of the compressor body 10 and the axis of the liquid reservoir 20 are substantially parallel. Similarly, the first top end face 11 and the second top end face 21 can also have a small angle (e.g. +-5°), which can be ignored, and it should be understood that the first top end face 11 and the second top end face 21 are substantially parallel. Obviously, the spatial geometric relationship between the first connecting portion 31 and the second connecting portion 32 is the same as the spatial geometric relationship between the first top end face 11 and the second top end face 21.
[0035] Optionally, with reference to Figure 3 and Figure 4The connecting bracket 30 is a plate, and the first connecting part 31, the second connecting part 32 and the transition part 33 are all plates. One end of the transition part 33 is connected with the first connecting part 31, and the other end of the transition part 33 is connected with the second connecting part 32. The transition part 33 is connected with the first connecting part 31 and the second connecting part 32 through arcs. In this way, the transition part 33 is not connected with the first connecting part 31 and the second connecting part 32 perpendicularly, and the effective connection area of the transition part 33 in the direction perpendicular to the axial direction of the compressor body 10 is increased, and the rigidity of the connecting bracket 30 in the axial direction of the compressor body 10 is further increased. Of course, in some embodiments, the transition part 33 can also be an arc-shaped plate, or a plate with multiple arc segments, or a twisted plate, which can connect the first connecting part 31 and the second connecting part 32, and the present application does not make specific limitations in this regard.
[0036] Optionally, referring to Figure 1 Figure 2 Figure 5 Figure 3 Figure 4 Figure 1 The compressor body 10 has a protrusion 12 protruding from the first top end 11 in the axial direction of the compressor body 10. The first connecting part 31 has an opening end 310 opening away from the second connecting part 32, and the opening end 310 is connected with a part of the profile of the protrusion 12. The liquid accumulator 20 has an air inlet pipe 22 penetrating through the second top end surface 21 in the axial direction of the liquid accumulator 20, and the air inlet pipe 22 is used for communication with the inner cavity of the liquid accumulator 20. The second connecting part 32 has a through hole 320 penetrating through the second connecting part 32 in the axial direction of the liquid accumulator 20, and the second connecting part 32 is sleeved on the air inlet pipe 22 through the through hole 320. Specifically, the first top end surface of the compressor body 10 is actually the surface of the upper cylinder cover of the compressor, and a person skilled in the art can set different shapes of the protrusion 12 on the surface of the upper cylinder cover according to actual needs, and at least a part of the profile of the protrusion 12 should match the opening end 310 of the first connecting part 31.
[0037] Optionally, there is a gap between the compressor body 10 and the liquid accumulator 20 in the direction perpendicular to the axial direction of the compressor body 10, and the distance is not greater than 5 mm, so that the distance from the liquid accumulator 20 to the central axis of the compressor body 10 is within the actual requirement range.
[0038] In summary, in the compressor provided by the application, the compressor comprises a compressor body, a liquid accumulator and a connecting bracket, the compressor body is communicated with the liquid accumulator through a compressor suction port, and the compressor body is connected with the liquid accumulator through the connecting bracket; the compressor body has a first top end surface away from the compressor suction port along an axial direction of the compressor body, and the liquid accumulator has a second top end surface away from the compressor suction port along an axial direction of the liquid accumulator; the connecting bracket comprises a first connecting part connected with the first top end surface, a second connecting part connected with the second top end surface, and a transition part connected with the first connecting part and the second connecting part respectively. By connecting the first connecting part of the connecting bracket with the first top end surface of the compressor body and connecting the second connecting part with the second top end surface of the liquid accumulator, the rigidity of the connecting bracket along the tangential direction of the compressor body can be improved, the first-order and second-order modal frequencies of the liquid accumulator are increased to more than 3000 Hz, and thus the low-frequency radiation noise of the compressor body is improved.
[0039] The above description is only a description of the preferred embodiments of the application and does not limit the scope of the application in any way. Any modification or change made by a person skilled in the art according to the above disclosure is within the protection scope of the claims.
Claims
1. A compressor characterized by, The compressor body is connected with the accumulator through a connecting support, and the compressor body is communicated with the accumulator through a compressor suction port; The compressor body has a first top end surface away from the compressor suction port along an axial direction of the compressor body, and the accumulator has a second top end surface away from the compressor suction port along an axial direction of the accumulator; The connecting support includes a first connecting part connected with the first top end surface, a second connecting part connected with the second top end surface, and a transition part connecting the first connecting part and the second connecting part.
2. The compressor of claim 1, wherein, The first connecting part and the second connecting part have a height difference along the axial direction of the compressor body.
3. The compressor of claim 1, wherein, The thickness of the connecting support along the axial direction of the compressor body is not less than 2mm.
4. The compressor of claim 1, wherein, The axis of the compressor body is parallel to the axis of the accumulator, the first top end surface is parallel to the second top end surface, the first connecting part is parallel to the second connecting part.
5. The compressor of claim 4, wherein, The connecting support is a plate-shaped part, one end of the transition part is connected with the first connecting part, and the other end of the transition part is connected with the second connecting part.
6. The compressor of claim 1, wherein, The compressor body has a protruding part protruding from the first top end surface along the axial direction of the compressor body, and the first connecting part has an opening end opening away from the second connecting part, and the opening end is connected with a part of the profile of the protruding part.
7. The compressor according to claim 1 or 6, characterized in that The accumulator has an air inlet pipe penetrating through the second top end surface along the axial direction of the accumulator, and the second connecting part has a through hole penetrating through the second connecting part along the axial direction of the accumulator, and the second connecting part is sleeved on the air inlet pipe through the through hole.
8. The compressor of claim 1, wherein, The first connecting part is welded with the first top end surface, and the second connecting part is welded with the second top end surface.
9. The compressor of claim 1 or 8, wherein, The first connecting part has a positioning bump on the side facing the first top end surface, and the positioning bump is used to connect with the first top end surface of the compressor body.
10. The compressor of claim 1, wherein, The compressor body and the accumulator have a gap in the direction perpendicular to the axial direction of the compressor body, and the distance is not greater than 5mm.
Citation Information
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