Silencing cover for pump body structure, pump body structure with silencing cover and compressor
By setting a radial exhaust gap and a main exhaust port at the end where the muffler cover connects to the upper bearing, the problems of noise frequency limitation and excessive internal pressure in the design of the muffler cover are solved, achieving better noise reduction effect and cost control.
Patent Information
- Application Number
- CN202520568012.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The existing compressor muffler cover design increases material costs and limits the muffler effect after increasing the number and layers of mufflers, making it impossible to further reduce noise. In addition, excessive internal pressure of the muffler cover may cause it to rupture.
An exhaust gap is provided at the end where the muffler cover is connected to the upper bearing, and its exhaust direction is radially outward along the muffler cover. Combined with the exhaust hole as the main exhaust channel, the exhaust gap is used as an auxiliary exhaust channel to eliminate noise of a certain frequency and reduce internal pressure.
Without increasing the number of muffler covers, the noise reduction effect is effectively improved, the problem of muffler covers breaking due to excessive internal pressure is avoided, and material costs are reduced at the same time.
Smart Images
Figure CN223806289U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a compressor technical field especially is related to a kind of muffling cover for pump body structure and the pump body structure and compressor with it. BACKGROUND
[0002] Rotary compressor is generally composed of upper cover, lower cover, shell, motor fixed in the interior to provide rotating power and pump body to realize refrigerant compression. Among them, pump body includes upper bearing, lower bearing, muffling cover, cylinder assembly, piston and crankshaft structure, muffling cover is generally set on crankshaft, and is surrounded with upper bearing and / or lower bearing to form muffling chamber, and refrigerant gas compressed by cylinder assembly is discharged into muffling chamber from the compression chamber of cylinder through upper bearing, to realize muffling and noise reduction.
[0003] With the improvement of people's quality of life, the development of the silent refrigeration equipment using compressor is more and more concerned by people. At present, in the muffling and noise reduction design of the pump body structure of compressor, the common method is to set the muffling cover on the upper bearing, so that the muffling cover forms different muffling chambers, thereby muffling and noise reduction is realized. In addition, some methods use double muffling covers to realize muffling and noise reduction, but also increase the material cost, and because the muffling cover and the motor need to maintain a certain safety distance, the height and the number of layers of the muffling cover cannot be increased all the time, and the muffling effect is limited. UTILITY MODEL CONTENTS
[0004] Therefore, the utility model aims at overcoming the defects of prior art, and provides a muffling cover for pump body structure and pump body structure and compressor with it, which can realize the elimination of noise of certain frequency and reduce the internal pressure of muffling cover by setting exhaust gap at one end of muffling cover connected with upper bearing, without increasing the number of muffling cover, and effectively improves the muffling effect.
[0005] In order to realize the above-mentioned purpose, the utility model embodiment provides a kind of muffling cover for pump body structure, the muffling cover is covered in the upper bearing of pump body structure, and the muffling cover and the upper bearing form muffling chamber, the end of the muffling cover away from the upper bearing is provided with exhaust hole communicating with the muffling chamber, and the end of the muffling cover abutting with the upper bearing is recessed along the axial direction of the muffling cover and provided with exhaust gap communicating with the muffling chamber, and the exhaust direction of the exhaust gap is outwardly arranged along the radial direction of the muffling cover.
[0006] Therefore, the sound insulation cover for the pump body structure according to the embodiment of the utility model, through setting up the exhaust gap in the one end of the sound insulation cover and connecting with the upper bearing, and making the exhaust direction of the exhaust gap set up along the radial direction of the sound insulation cover outward, cooperating with the exhaust hole of the sound insulation cover, on the basis of the exhaust hole as the main exhaust passage, using the radial exhaust of the exhaust gap as the auxiliary exhaust passage, can eliminate the noise of certain frequency in the sound insulation cover, and can effectively reduce the internal pressure of the sound insulation cover, that is to say, the embodiment of the utility model can avoid the problem that the distance between the multilayer sound insulation cover in the axial direction and the rotor is too small without increasing the number of the sound insulation cover, and can effectively improve the internal pressure of the sound insulation cover and the sound insulation and noise reduction effect, and prevent the sound insulation cover from being broken due to the excessive internal pressure.
[0007] As an implementation form, the exhaust volume of the pump body structure is V, the exhaust area of the exhaust gap is S1, and 0.9*10 -3 / mm≤S1 / V≤2.8*10 -3 / mm.
[0008] As an implementation form, the total area of the exhaust hole is S2, and 0.13≤S1 / S2≤0.32.
[0009] As an implementation form, the height of the exhaust gap along the axial direction of the sound insulation cover is H, and 0.2mm≤H≤0.8mm.
[0010] As an implementation form, the exhaust direction of the exhaust hole is parallel to the axis of the sound insulation cover.
[0011] As an implementation form, the number of the exhaust hole is one or more.
[0012] As an implementation form, the number of the exhaust gap is one or more, and one or more exhaust gaps are arranged along the circumferential direction of the one end of the sound insulation cover abutting against the upper bearing.
[0013] As an implementation form, the one end of the sound insulation cover away from the upper bearing is provided with a central hole for the crankshaft to pass through.
[0014] The utility model embodiment second aspect provides a kind of pump body structure, including the sound insulation cover described in any one of the above. According to the pump body structure of the utility model embodiment, by setting up exhaust gap in the one end of the sound insulation cover and connecting with the upper bearing, without increasing the number of the sound insulation cover, can realize the elimination of certain frequency noise, and reduce the internal pressure of the sound insulation cover, effectively improve the sound insulation effect.
[0015] The utility model discloses an embodiment third aspect provides a kind of compressor, comprising the pump body structure of any one described above. According to the compressor of the utility model embodiment, by setting the exhaust gap in the one end of the sound cover and the upper bearing, without increasing the number of sound cover, the noise of certain frequency can be removed, and the internal pressure of sound cover is reduced, and the sound elimination effect is effectively improved.
[0016] For better understanding and implementation, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is one of structure schematic view of the sound cover for the pump body structure of the utility model embodiment;
[0018] Figure 2 It is the second structure schematic view of the sound cover for the pump body structure of the utility model embodiment;
[0019] Figure 3 It is the third structure schematic view of the sound cover for the pump body structure of the utility model embodiment;
[0020] Figure 4 It is one of connection schematic view of the sound cover for the pump body structure of the utility model embodiment and upper bearing;
[0021] Figure 5 It is the second connection schematic view of the sound cover for the pump body structure of the utility model embodiment and upper bearing;
[0022] Figure 6 It is Figure 5 The cross section schematic view of A-A direction shown;
[0023] Figure 7 It is the structure schematic view of the pump body structure of the utility model embodiment;
[0024] Figure 8 It is Figure 7 The enlarged schematic view of A part shown.
[0025] BRIEF DESCRIPTION OF DRAWINGS
[0026] 10, sound cover;11, sound cavity;12, exhaust hole;13, exhaust gap;20, upper bearing;30, cylinder assembly;40, lower bearing. DETAILED DESCRIPTION
[0027] To further illustrate the embodiments, the utility model provides has the drawing. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can be combined with the related description of the specification to explain the operating principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementations and the advantages of the utility model.
[0028] In the related art, the rotary compressor is generally composed of an upper cover, a lower cover, a shell, a motor fixed inside to provide rotary power and a pump body to realize refrigerant compression. Among them, the pump body includes an upper bearing, a lower bearing, a sound insulation cover, a cylinder assembly, a piston and a crankshaft structure, the sound insulation cover is generally sleeved on the crankshaft, and the sound insulation cover and the upper bearing and / or the lower bearing form a sound insulation cavity, the refrigerant gas compressed by the cylinder assembly is discharged from the compression cavity of the cylinder through the upper bearing into the sound insulation cavity to realize sound insulation and noise reduction.
[0029] With the improvement of people's requirements for the quality of life, the development of the quietness of the refrigeration equipment using the compressor has attracted more and more attention. At present, in the sound insulation and noise reduction design of the pump body structure of the compressor, the common method is to set the sound insulation cover on the upper bearing and the sound insulation cover to form different sound insulation cavities, thereby sound insulation and noise reduction are realized. Some other methods are to use double sound insulation covers to realize sound insulation and noise reduction, but the material cost is also increased accordingly, and since the sound insulation cover and the motor need to maintain a certain safety distance, the height and the number of layers of the sound insulation cover cannot be increased all the time, and the sound insulation effect is limited.
[0030] Therefore, the utility model embodiment provides a sound insulation cover 10 for a pump body structure and a pump body structure and a compressor with the same. According to the sound insulation cover 10 for the pump body structure and the pump body structure and the compressor with the same, by setting the exhaust gap 13 at one end of the sound insulation cover 10 connected with the upper bearing 20, without increasing the number of the sound insulation cover 10, the noise of a certain frequency can be eliminated, and the internal pressure of the sound insulation cover 10 is reduced, and the sound insulation effect is effectively improved.
[0031] Please refer to Figures 1 to 6 ; the utility model embodiment first aspect provides a sound insulation cover 10 for a pump body structure, the sound insulation cover 10 is covered in the upper bearing 20 of pump body structure, and the sound insulation cover 10 and the upper bearing 20 form the sound insulation cavity 11, the sound insulation cover 10 is set up with the exhaust hole 12 of the sound insulation cavity 11 in the end away from the upper bearing 20, and the sound insulation cover 10 is set up with the exhaust gap 13 of the sound insulation cavity 11 in the end along the axial direction of the sound insulation cover 10 abuts with the upper bearing 20, and the exhaust direction of the exhaust gap 13 is set up along the radial direction of the sound insulation cover 10 and outward.
[0032] Therefore, according to the sound insulation cover 10 for the pump body structure, the exhaust gap 13 is arranged at one end of the sound insulation cover 10 connected with the upper bearing 20, and the exhaust direction of the exhaust gap 13 is arranged outward along the radial direction of the sound insulation cover 10, cooperating with the exhaust hole 12 of the sound insulation cover 10, on the basis of the exhaust hole 12 as a main exhaust passage, the radial exhaust of the exhaust gap 13 is used as an auxiliary exhaust passage, the noise of a certain frequency in the sound insulation cover 10 can be eliminated, and the internal pressure of the sound insulation cover 10 can be effectively reduced; that is, without increasing the number of the sound insulation cover 10, the problem that the distance between the multilayer sound insulation cover 10 in the axial direction and the rotor is too small can be avoided, and the internal pressure and the sound insulation and noise reduction effect of the sound insulation cover 10 can be effectively improved, and the problem that the sound insulation cover 10 is broken due to excessive internal pressure can be prevented.
[0033] In the embodiment of the utility model, the exhaust capacity of the pump body structure is V, the exhaust area of the exhaust gap 13 is S1, 0.9*10 -3 / mm≤S1 / V≤2.8*10 -3 / mm. Therefore, according to the sound insulation cover 10 of the utility model embodiment, by limiting the ratio of the exhaust capacity V of the pump body structure and the exhaust area S1 of the exhaust gap 13 to 0.9*10 -3 / mm-2.8*10 -3 / mm, the phenomenon that the sound insulation effect is not ideal due to the exhaust area of the exhaust gap 13 being too large is prevented.
[0034] Among them, the number of exhaust gap 13 can be one, also can be multiple;When the number of exhaust gap 13 is multiple, multiple exhaust gap 13 is respectively spaced apart and is distributed in the circumferential direction of one end of the sound insulation cover 10 connected with the upper bearing 20, and the total exhaust area of multiple exhaust gap 13 is S1, and the ratio of the exhaust capacity V of the pump body structure is also limited to the range of 0.9*10 -3 / mm-2.8*10 -3 / mm.
[0035] Optionally, in some embodiments of the utility model, the height of the exhaust gap 13 along the axial direction of the sound insulation cover 10 is H, 0.2mm≤H≤0.8mm. Therefore, according to the sound insulation cover 10 of the utility model embodiment, by limiting the height H of the exhaust gap 13 along the axial direction to the range of 0.2mm-0.8mm, the phenomenon that the sound insulation effect is not ideal due to the exhaust gap 13 being too large can be prevented, and the sound insulation effect of the sound insulation cover 10 can be effectively ensured.
[0036] In the embodiment of the utility model, the exhaust direction of the exhaust hole 12 is parallel to the axis of the soundproof cover 10. In addition, the total area of the exhaust hole 12 is S2, and 0.13 <= S1 / S2 <= 0.32. It can be understood that, in the embodiment of the utility model, the ratio of the exhaust area S1 of the exhaust gap 13 to the total area S2 of the exhaust hole 12 is limited in the range of 0.13-0.32, so that the exhaust hole 12 serves as the main exhaust passage, while the exhaust gap 13 serves as the auxiliary exhaust passage, and the exhaust direction of the exhaust hole 12 is axially arranged, while the exhaust direction of the exhaust gap 13 is radially arranged, which can eliminate certain frequency noise in the soundproof cover 10 and effectively reduce the internal pressure of the soundproof cover 10. The number of the exhaust hole 12 can be one or multiple.
[0037] In addition, in the embodiment of the utility model, the soundproof cover 10 is provided with a central hole for the crankshaft to pass through at the end away from the upper bearing 20.
[0038] The following will be described in detail Figures 1 to 8 It is worth understanding that the following is only a demonstrative description and cannot be understood as a limitation of the utility model.
[0039] The embodiment provides a soundproof cover 10 for a pump body structure, the soundproof cover 10 is covered on the upper bearing 20 of the pump body structure, and the soundproof cover 10 and the upper bearing 20 enclose a soundproof cavity 11, the soundproof cover 10 is provided with an exhaust hole 12 communicating with the soundproof cavity 11 at the end away from the upper bearing 20, the soundproof cover 10 is provided with an exhaust gap 13 communicating with the soundproof cavity 11 at the end abutting against the upper bearing 20 and recessed along the axial direction of the soundproof cover 10, and the exhaust direction of the exhaust gap 13 is outwardly arranged along the radial direction of the soundproof cover 10.
[0040] In the embodiment, the exhaust volume of the pump body structure is V, the exhaust area of the exhaust gap 13 is S1, S1 / V = 0.9*10-3 / mm; the height of the exhaust gap 13 along the axial direction of the soundproof cover 10 is H, H = 0.2mm; the total area of the exhaust hole 12 is S2, and S1 / S2 = 0.13.
[0041] The following will be described in detail Figures 1 to 8 It is worth understanding that the following is only a demonstrative description and cannot be understood as a limitation of the utility model.
[0042] The embodiment provides a sound attenuation cover 10 for a pump body structure, the sound attenuation cover 10 is covered on an upper bearing 20 of the pump body structure, and the sound attenuation cover 10 and the upper bearing 20 enclose a sound attenuation cavity 11, an exhaust hole 12 communicating with the sound attenuation cavity 11 is arranged at one end of the sound attenuation cover 10 away from the upper bearing 20, and an exhaust gap 13 communicating with the sound attenuation cavity 11 is arranged at one end of the sound attenuation cover 10 abutting against the upper bearing 20 and recessed along the axial direction of the sound attenuation cover 10, and the exhaust direction of the exhaust gap 13 is outward along the radial direction of the sound attenuation cover 10.
[0043] In the embodiment, the number of the exhaust gaps 13 is four, the four exhaust gaps 13 are distributed in the circumferential direction of one end of the sound attenuation cover 10 connected with the upper bearing 20, the number of the exhaust holes 12 is two, and the exhaust direction of the exhaust holes 12 is parallel to the axis of the sound attenuation cover 10.
[0044] Further, in the embodiment, the exhaust volume of the pump body structure is V, the total exhaust area of the four exhaust gaps 13 is S1, S1 / V = 1.9*10-3 / mm, the height of the exhaust gap 13 along the axial direction of the sound attenuation cover 10 is H, H = 0.5mm, and the total area of the two exhaust holes 12 is S2, S1 / S2 = 0.23.
[0045] The specific embodiment of the sound attenuation cover 10 for the pump body structure according to the utility model will be described below. Figures 1 to 8 It is worth understanding that the following is only a demonstrative description and cannot be understood as a limitation of the utility model.
[0046] The embodiment provides a sound attenuation cover 10 for a pump body structure, the sound attenuation cover 10 is covered on an upper bearing 20 of the pump body structure, and the sound attenuation cover 10 and the upper bearing 20 enclose a sound attenuation cavity 11, an exhaust hole 12 communicating with the sound attenuation cavity 11 is arranged at one end of the sound attenuation cover 10 away from the upper bearing 20, and an exhaust gap 13 communicating with the sound attenuation cavity 11 is arranged at one end of the sound attenuation cover 10 abutting against the upper bearing 20 and recessed along the axial direction of the sound attenuation cover 10, and the exhaust direction of the exhaust gap 13 is outward along the radial direction of the sound attenuation cover 10.
[0047] In the embodiment, the number of the exhaust gaps 13 is four, the four exhaust gaps 13 are distributed in the circumferential direction of one end of the sound attenuation cover 10 connected with the upper bearing 20, the number of the exhaust holes 12 is two, and the exhaust direction of the exhaust holes 12 is parallel to the axis of the sound attenuation cover 10.
[0048] Further, in the embodiment, the pump body structure has a discharge volume V, the total discharge area of the four discharge gaps 13 is S1, S1 / V=2.8*10-3 / mm, the height of the discharge gap 13 along the axial direction of the sound elimination cover 10 is H, H=0.8mm, and the total area of the two discharge holes 12 is S2, S1 / S2=0.32.
[0049] Please refer to Figure 7 and Figure 8 The utility model embodiment second aspect provides a pump body structure, including any one of above described sound elimination cover 10, still include upper bearing 20, cylinder subassembly 30, lower bearing 40, upper bearing 20 with lower bearing 40 are arranged respectively in the upper and lower end of cylinder subassembly 30, sound elimination cover 10 is set up in upper bearing 20, and sound elimination cover 10 with upper bearing 20 enclose sound elimination chamber 11, the one end of sound elimination cover 10 is set up away from upper bearing 20 and is equipped with the discharge hole 12 of the communication sound elimination chamber 11, the one end of sound elimination cover 10 is in abutment with upper bearing 20 and is provided with the discharge gap 13 of the communication sound elimination chamber 11 along the axial recess of sound elimination cover 10, and the discharge direction of discharge gap 13 is outwardly arranged along the radial direction of sound elimination cover 10.
[0050] Among them, the cylinder subassembly 30 of the utility model embodiment can be one cylinder, or two cylinders and an intermediate plate, and the number of cylinders can be set according to actual needs.
[0051] Therefore, according to the pump body structure of the utility model embodiment, by setting the discharge gap 13 at the end of the sound elimination cover 10 connected with the upper bearing 20, the noise of a certain frequency can be eliminated without increasing the number of sound elimination covers 10, the internal pressure of the sound elimination cover 10 is reduced, and the sound elimination effect is effectively improved.
[0052] The utility model embodiment third aspect provides a compressor, including any one of above described pump body structure. According to the compressor of the utility model embodiment, by setting the discharge gap 13 at the end of the sound elimination cover 10 connected with the upper bearing 20, the noise of a certain frequency can be eliminated without increasing the number of sound elimination covers 10, the internal pressure of the sound elimination cover 10 is reduced, and the sound elimination effect is effectively improved.
[0053] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0054] The above-described embodiments only express several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as limiting the utility model for the sound cover of the pump body structure, the pump body structure with the same and the compressor range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.
Claims
1. A sound attenuation cover for a pump body structure, characterized in that: the sound attenuation cover is arranged on an upper bearing of the pump body structure, and the sound attenuation cover and the upper bearing form a sound attenuation cavity, an exhaust hole is arranged on an end of the sound attenuation cover away from the upper bearing and communicates with the sound attenuation cavity, an exhaust gap is arranged on an end of the sound attenuation cover abutting against the upper bearing and communicates with the sound attenuation cavity, and an exhaust direction of the exhaust gap is arranged outward along a radial direction of the sound attenuation cover. 2.The sound attenuation cover for the pump body structure according to claim 1, characterized in that: The pump body structure has a discharge volume V, the discharge area of the discharge gap is S1, and 0.9*10 -3 / mm≤S1 / V≤2.8*10 -3 / mm. 3.The sound attenuation cover for the pump body structure according to claim 1, characterized in that: a total area of the exhaust hole is S2, and 0.13≤S1 / S2≤0.
32. 4.The sound attenuation cover for the pump body structure according to claim 1, characterized in that: a height of the exhaust gap along an axial direction of the sound attenuation cover is H, and 0.2mm≤H≤0.8mm. 5.The sound attenuation cover for the pump body structure according to claim 1, characterized in that: the exhaust direction of the exhaust hole is parallel to an axis of the sound attenuation cover. 6.The sound attenuation cover for the pump body structure according to claim 5, characterized in that: a number of the exhaust hole is one or more. 7.The sound attenuation cover for the pump body structure according to claim 1, characterized in that: a number of the exhaust gap is one or more, and one or more of the exhaust gaps are arranged along a circumferential direction of the end of the sound attenuation cover abutting against the upper bearing. 8.The sound attenuation cover for the pump body structure according to claim 1, characterized in that: a center hole is arranged on the end of the sound attenuation cover away from the upper bearing and is arranged for a crankshaft to pass through. 9.A pump body structure, characterized in that: the pump body structure comprises the sound attenuation cover for the pump body structure according to any one of claims 1 to 8. 10.A compressor, characterized in that: the compressor comprises the pump body structure according to claim 9.