Exhaust pipe and compressor upper cylinder cover

Abstract

The present invention provides an exhaust duct and a compressor upper cylinder head, wherein the exhaust duct includes a pipe body and a flow guide device arranged on the inner wall of the pipe body, the flow guide device is used to make the gas in the pipe body form a vortex, and the flow guide device includes at least one group of vortex generator assemblies arranged along the axial direction of the pipe body. The compressor upper cylinder head includes the exhaust duct as described above. The flow guide device provided by the present invention can effectively reduce the situation of premature separation of airflow caused by uneven back pressure at the exhaust duct, increase the effective flow area in the exhaust duct, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust duct, which can reduce pressure loss, improve the efficiency of the compressor, and effectively reduce exhaust noise.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to an exhaust pipe and an upper cylinder cover of a compressor. Background Art

[0002] The airflow noise of the air conditioner rotary compressor is an important source of compressor noise, and it will cause noise in the air conditioner's internal unit, affecting user experience and product competitiveness. The airflow noise mainly occurs in the exhaust area of ​​the compressor. The airflow velocity near the exhaust valve seat of the compressor is high, and the airflow flow path is complex, with significant periodic exhaust characteristics. Therefore, the interaction between the airflow and the inner wall of the exhaust duct is strong, which easily forms obvious airflow noise.

[0003] Existing solutions to noise include the following two: one is to set an axial groove in the exhaust pipe of the compressor and arrange a plurality of square holes on the upper end surface of the exhaust port of the exhaust pipe, thereby generating turbulence and increasing the effective flow area of ​​the refrigerant gas, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe. However, this solution is prone to induce secondary vortices and will still cause noise problems; the other is to open a plurality of blind holes distributed in a certain pattern on the axial groove in the exhaust pipe of the compressor, and the airflow flowing into the blind holes vibrates under the action of sound pressure, consuming the energy of the airflow flow, thereby reducing the exhaust noise to a certain extent. Summary of the invention

[0004] The object of the present invention is to provide an exhaust duct and a compressor upper cylinder head to solve the problems in the prior art that the exhaust duct has a limited degree of reducing exhaust noise and reduces exhaust noise by consuming the energy and rate of airflow flow, thereby affecting the efficiency of the compressor.

[0005] In order to solve the above technical problems, the present invention provides an exhaust duct, which is applied to the compressor field. The exhaust duct includes a pipe body and a guide device arranged on the inner wall of the pipe body. The guide device is used to make the gas in the pipe body form a vortex. The guide device includes at least one group of vortex generator components arranged along the axial direction of the pipe body.

[0006] Optionally, each group of the vortex generator assemblies includes a plurality of vortex generators arranged at circumferential intervals along the inner wall of the tube body.

[0007] Optionally, each of the vortex generators includes two generating members with a preset angle.

[0008] Optionally, the generating element is fin-shaped or prism-shaped.

[0009] Optionally, the preset angle is 0° to 50°.

[0010] Optionally, the flow guide device further includes a hollow sleeve, the vortex generator assembly is disposed on the inner wall of the hollow sleeve, and the multiple vortex generators constituting the vortex generator assembly are arranged at intervals along the circumferential direction of the inner wall of the hollow sleeve.

[0011] Optionally, the hollow sleeve is made of an organic material or a metal material.

[0012] Optionally, the vortex generator and the hollow sleeve are an integrated structure.

[0013] Optionally, the guide device is made of a strip sheet by punching and curling.

[0014] The present invention also provides a compressor upper cylinder head, comprising the exhaust pipe as described above.

[0015] Compared with the prior art, the exhaust pipe and the upper cylinder head of the compressor provided by the present invention have the following advantages: the exhaust pipe provided by the present invention comprises a pipe body and a flow guide device arranged on the inner wall of the pipe body, and the flow guide device comprises at least one group of vortex generator components arranged along the axial direction of the pipe body. Thus, the gas in the pipe body can be effectively vortexed by the flow guide device, and when exhausting through the exhaust pipe, the gas in the pipe body can flow in the form of vortex, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe, thereby effectively reducing the pressure loss and reducing the airflow noise; the stability of the generated vortex can be more effectively guaranteed by at least one group of vortex generator components. The flow guide device provided by the present invention can effectively reduce the situation of premature separation of airflow caused by uneven back pressure at the exhaust pipe, increase the effective flow area in the exhaust pipe, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe, which can reduce the pressure loss, improve the efficiency of the compressor, and effectively reduce the exhaust noise. The compressor upper cylinder head provided by the present invention has the advantages of the exhaust pipe as described above, which will not be described in detail. In addition, the compressor upper cylinder head provided by the present invention has a low pressure loss at the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an upper cylinder cover provided by an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a flow guide device provided in one embodiment of the present invention;

[0018] Figure 3 A front view of a flow guide device provided by an embodiment of the present invention when it is unfolded;

[0019] Figure 4A side view of a flow guide device provided by an embodiment of the present invention when unfolded.

[0020] The reference numerals are as follows:

[0021] 100 - upper cylinder cover, 200 - exhaust pipe, 210 - flow guide device, 211 - generating element, 212 - hollow sleeve, 213 - strip sheet, 214 - through hole. DETAILED DESCRIPTION

[0022] To make the purpose, advantages and features of the present invention more clear, the following Figures 1 to 4 The exhaust pipe and the compressor upper cylinder head proposed in the present invention are further described in detail. It should be noted that the drawings are in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The core idea of ​​the present invention is to provide an exhaust pipe and a compressor upper cylinder cover, which can effectively reduce the exhaust noise of the compressor, reduce pressure loss, and improve the efficiency of the compressor, and can effectively increase the effective flow area in the exhaust pipe.

[0026] To realize the above idea, the present invention provides an exhaust pipe, which is applied to the compressor field. Figure 1 and Figure 2 ,in, Figure 1 The structural diagram of the upper cylinder cover provided by the present invention is schematically given; Figure 2 The structural diagram of the flow guiding device provided by the present invention is schematically shown. Figure 1 to Figure 2 As shown, the exhaust pipe 200 includes a pipe body and a flow guide device 210 arranged on the inner wall of the pipe body, the flow guide device 210 is used to make the gas in the pipe body form a vortex, and the flow guide device 210 includes at least one group of vortex generator components arranged along the axial direction of the pipe body. Therefore, the flow guide device 210 can effectively make the gas in the pipe body of the exhaust pipe 200 form a vortex, and when exhausting through the exhaust pipe 200, the gas in the pipe body of the exhaust pipe 200 can circulate in the form of a vortex, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe 200, thereby effectively reducing pressure loss and reducing airflow noise; at least one group of vortex generator components can more effectively ensure the stability of the generated vortex. The flow guide device 210 provided by the present invention can effectively reduce the premature separation of the airflow caused by the uneven back pressure in the exhaust pipe 200, thereby increasing the effective flow area in the exhaust pipe 200 so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe 200, thereby reducing the pressure loss and improving the efficiency of the compressor, and effectively reducing the exhaust noise.

[0027] It should be noted that the vortex generator assembly can be directly set in the exhaust duct 200 by welding or specific bonding connection methods, or the vortex generator assembly can be set on a fixing device by welding or specific bonding connection methods, and then the fixing device with the vortex generator assembly can be installed in the exhaust duct 200.

[0028] Preferably, each group of the vortex generator assembly includes a plurality of vortex generators arranged at intervals along the circumferential direction of the inner wall of the tube body. Thus, the airflow flowing in the exhaust duct 200 can be effectively discharged smoothly in the form of vortices through the plurality of vortex generators, effectively reducing noise and pressure loss; by arranging the plurality of vortex generators along the circumferential direction of the inner wall of the tube body of the exhaust duct 200, sufficient circulation space can be left for the gas vortex formed in the exhaust duct 200, avoiding the vortex generators blocking the circulation of the airflow and affecting the efficiency of the compressor and generating additional noise.

[0029] Preferably, if Figure 2 As shown, the flow guide device 210 further includes a hollow sleeve 212, the vortex generator assembly is arranged on the inner wall of the hollow sleeve 212, and the multiple vortex generators constituting the vortex generator assembly are arranged at intervals along the circumferential direction of the inner wall of the hollow sleeve 212. Therefore, the hollow sleeve 212 can effectively carry the vortex generator assembly, and by installing the hollow sleeve 212 with the vortex generator assembly in the exhaust pipe 200, the risk of directly welding the vortex generator assembly in the exhaust pipe 200 is avoided, so that the flow guide device 210 and the exhaust pipe 200 are detachably installed, which is conducive to the installation and removal of the flow guide device 210.

[0030] Preferably, the hollow sleeve 212 is made of organic material or metal material. Therefore, the metal material or organic material can more effectively suppress noise, reduce energy loss when the airflow collides with the guide device 210, effectively improve the flow stability of the airflow, and ensure the efficiency of the compressor.

[0031] Preferably, the vortex generator and the hollow sleeve 212 are an integrated structure. Thus, the integrated structure not only ensures the reliability of the connection between the vortex generator and the hollow sleeve 212, but also facilitates the manufacture of the flow guide device 210.

[0032] Preferably, each of the vortex generators includes two generating members 211 with a preset angle. Thus, the generating member 211 can effectively affect the flow pattern of the airflow, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe 200 in the form of a vortex, which can reduce pressure loss, improve the efficiency of the compressor, and effectively reduce exhaust noise.

[0033] Specifically, Figure 1As shown, each group of the vortex generator assembly includes five vortex generators arranged in a row, and each vortex generator includes two generating members 211. Therefore, this arrangement enables the vortex generators to be arranged at intervals from each other, which can not only ensure that the vortex generator assembly forms a gas vortex in the exhaust duct 200, but also control the number of the vortex generators to avoid affecting the circulation of the airflow due to too many vortex generators.

[0034] Preferably, the preset angle is 0° to 50°. Thus, the vortex generator formed by the two generating elements 211 with a preset angle of 0° to 50° can enable the gas in the pipe body of the exhaust duct to form a regular airflow disturbance, which is more conducive to the formation of vortices, thereby reducing exhaust noise and pressure loss. It should be noted that when the preset angle is 10° to 50°, it is more conducive to reducing exhaust noise.

[0035] Preferably, the generator is fin-shaped or prism-shaped. Thus, the generator 211 in the form of a fin or prism has a simple structure and is easy to manufacture, which can not only form a vortex in the gas flowing in the exhaust duct 200, but also greatly save costs. It should be noted that the generator 211 in the form of a fin is a polygonal sheet structure, and the generator 211 in the form of a prism is a convex structure with convex edges.

[0036] Please refer to Figure 3 and Figure 4 ,in, Figure 3 A schematic diagram of the front view of the flow guide device provided by the present invention when it is unfolded is given; Figure 4 The side view of the flow guiding device provided by the present invention when unfolded is schematically shown. Figure 3 and Figure 4 As shown, the flow guide device 210 is made of a strip sheet 213 by punching and curling. Thus, the structure of the generating element 211 is punched out on the same side of the strip sheet 213 to form the vortex generator, and then the strip sheet 213 is curled to form a hollow sleeve 212 with the vortex generator, thereby forming the flow guide device 210 including the vortex generator and the hollow sleeve 212.

[0037] Specifically, when the strip sheet 213 is punched to form the fin-shaped generating element 211, the fin-shaped generating element 211 is punched from one side of the strip sheet 213 to the other side, and the fin-shaped generating element 211 is bent 90°±20° to the same side of the strip sheet 213, and a through hole 214 having the same shape as the fin-shaped generating element 211 is left on the strip sheet, thereby the generating element 211 bent 90°±20° to the same side of the strip sheet 213 is formed. 11 can make the generating element more protruding relative to the surface of the strip-shaped sheet 213, increase the irregularity of the surface of the strip-shaped sheet, so that when the strip-shaped sheet is made into the guide device, the guide device is more conducive to forming a vortex of the gas in the exhaust duct; when the strip-shaped sheet is punched to form the prismatic generating element 211, a protrusion with convex ridges is formed from one side of the strip-shaped sheet 213 to the other side, and the protrusion is the prismatic generating element 211; Figure 3 As shown, two symmetrical generating parts 211 with the preset angle are punched out on the strip sheet to form the vortex generator, and a plurality of rows of the vortex generators are punched out in sequence on the same side of the strip sheet 213, so that the symmetry axes of all the vortex generators are parallel or overlapped with each other, and then the strip sheet 213 is curled end to end, so that the guide device can be made. It should be noted that when installing the guide device, the opening direction of the preset angle is consistent with the exhaust direction of the exhaust duct 200.

[0038] Preferably, if Figure 3 As shown, the generating element 211 is a triangular sheet structure, and the two generating elements 211 of each vortex generator are symmetrically arranged with respect to the axial direction of the exhaust duct 200. Since the two generating elements 211 of the vortex generator are symmetrically arranged with respect to the axial direction of the exhaust duct 200, the airflow gap can be divided more effectively, thereby changing the flow pattern of the airflow, which is conducive to the formation of vortices and reduces exhaust noise and pressure loss. By setting the shape of the generating element 211 to a triangle, not only the processing procedure of the vortex generator can be simplified, but also it is more conducive to controlling the angle between the two generating elements 211 constituting the vortex generator within the preset angle range. It should be noted that Figure 3 The angle A shown in the figure is the axial angle between the generating element 211 and the exhaust pipe 200, corresponding to the preset angle, and the angle A is 0° to 25°.

[0039] The present invention also provides a compressor upper cylinder head, comprising the exhaust pipe 200 as described above. Since the compressor upper cylinder head provided by the present invention comprises the exhaust pipe as described above, the compressor upper cylinder head 100 provided by the present invention can effectively reduce the premature separation of airflow caused by uneven back pressure at the exhaust pipe 200, increase the effective flow area of ​​the exhaust pipe 200, so that the refrigerant gas can be smoothly discharged from the cylinder in the form of a vortex through the exhaust pipe 200, which can reduce the pressure loss at the exhaust pipe 200 and effectively suppress the exhaust noise.

[0040] In summary, compared with the prior art, the exhaust pipe and the compressor upper cylinder head provided by the present invention have the following advantages:

[0041] The exhaust pipe provided by the present invention comprises a pipe body and a flow guide device arranged on the inner wall of the pipe body, wherein the flow guide device comprises at least one group of vortex generator assemblies arranged along the axial direction of the pipe body. Thus, the gas in the pipe body can be effectively vortexed by the flow guide device, and when exhausting through the exhaust pipe, the gas in the pipe body can circulate in the form of vortex, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe, thereby effectively reducing the pressure loss and reducing the airflow noise; the stability of the generated vortex can be more effectively guaranteed by at least one group of vortex generator assemblies. The flow guide device provided by the present invention can effectively reduce the situation of premature separation of airflow caused by uneven back pressure at the exhaust pipe, increase the effective flow area in the exhaust pipe, so that the refrigerant gas can be discharged smoothly from the cylinder through the exhaust pipe, which can reduce the pressure loss, improve the efficiency of the compressor, and effectively reduce the exhaust noise. The compressor upper cylinder head provided by the present invention has the advantages of the exhaust pipe as described above, which will not be repeated, and the compressor upper cylinder head provided by the present invention has a low pressure loss at the exhaust pipe.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An exhaust pipe, used in the field of compressors, characterized in that: The exhaust duct comprises a pipe body and a flow guide device arranged on the inner wall of the pipe body, the flow guide device is used to make the gas in the pipe body form a vortex, and the flow guide device comprises a hollow sleeve arranged on the inner wall of the pipe body and at least one group of vortex generator components arranged along the axial direction of the pipe body; Each group of the vortex generator assemblies includes a plurality of vortex generators spaced apart along the circumferential direction of the inner wall of the tube body; Each of the vortex generators comprises two generating members spaced apart from each other along the circumference of a hollow sleeve; an opening is formed by punching the hollow sleeve and the generating member is connected to a side wall of the opening.

2. The exhaust duct according to claim 1, characterized in that: The generating element is in the shape of a fin or a prism.

3. The exhaust duct according to claim 1, characterized in that: The hollow sleeve is made of organic material or metal material.

4. The exhaust duct according to claim 1, characterized in that: The vortex generator and the hollow sleeve are an integrated structure.

5. The exhaust duct according to claim 3, characterized in that: The flow guide device is made of a strip sheet through punching and curling.

6. A compressor upper cylinder head, characterized in that: The invention comprises the exhaust duct according to any one of claims 1 to 5.

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