Flow-dividing noise-reducing upper cylinder cover and rotor compressor
By adding arc-shaped ventilation slots and exhaust slots on the upper cylinder head of the rotor compressor, the shunt and noise reduction of high-temperature and high-pressure gases is achieved, the problems of exhaust loss, noise and vibration are solved, and the performance and life of the compressor are improved.
Patent Information
- Application Number
- CN202421534359.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-07-01
AI Technical Summary
When the existing rotor compressor is running, the high-temperature and high-pressure exhaust gas produces air pressure shock and gas vortex in the silence cover, resulting in exhaust gas loss, noise and vibration, affecting the performance and service life of the compressor.
A shunt noise reduction upper cylinder head is designed. By adding several arc-shaped ventilation grooves and exhaust grooves to the upper cylinder head, high-temperature and high-pressure gas is evenly diverted through the exhaust groove, reducing the impact force and vortex production of gas in the silence cover.
Through diversion exhaust, exhaust kinetic energy loss and noise are reduced, the smoothness and performance of the compressor are improved, and the service life is extended.
Smart Images
Figure CN222650169U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotor compressors, in particular to a flow-dividing and noise-reducing upper cylinder cover and a rotor compressor. Background Art
[0002] In recent years, the technology of rotary compressors has developed rapidly and is widely used in various refrigeration equipment. When the rotary compressor is running, it compresses the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gas and then discharges it from the exhaust valve port of the upper cylinder head. The gas discharged from the exhaust valve first enters the area covered by the silencer cover, and then flows out from the air outlet of the silencer cover. The high-temperature and high-pressure exhaust gas will produce air pressure shock and gas vortex in the silencer cover, thereby causing exhaust loss and affecting the performance of the compressor; it will also generate vibration and noise, affecting the stability and service life of the compressor. Summary of the invention
[0003] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a split-flow noise-reducing upper cylinder cover and a rotor compressor.
[0004] The specific scheme of the utility model is: a diversion noise reduction upper cylinder head, including an upper cylinder head body, the upper cylinder head body is provided with an exhaust valve plate mounting groove, the exhaust valve plate mounting groove is provided with an exhaust hole, the upper surface of the upper cylinder head body is provided with a silencer cover mounting seat, the silencer cover mounting seat is provided with a ventilation groove, the ventilation groove is connected with the exhaust valve plate mounting groove, the ventilation groove is arranged on the outer periphery of the crankshaft mounting hole, and the silencer cover mounting seat is also provided with a plurality of exhaust grooves along the direction of the ventilation groove, one end of all the exhaust grooves is connected with the ventilation groove, and the other end of the exhaust groove extends to the outer circumference and exceeds the coverage range of the silencer cover.
[0005] Furthermore, the plurality of exhaust grooves are arranged in a counterclockwise direction, and each exhaust groove is a straight line.
[0006] Furthermore, the ventilation groove is arc-shaped and arranged concentrically with the crankshaft mounting hole, and an angle β is provided between the tangent line at the intersection of the exhaust groove and the ventilation groove and the exhaust groove, and 10°<β<60°.
[0007] Furthermore, the width of the ventilation groove is 1-3 mm.
[0008] Furthermore, the width of the exhaust groove is 1-3 mm.
[0009] The utility model also provides a rotor compressor equipped with the above-mentioned flow-dividing noise-reducing upper cylinder cover, a silencer cover is installed on a silencer cover mounting seat, and the ventilation groove is arranged within the coverage range of the silencer cover.
[0010] Compared with the prior art, the utility model has the following advantages: by adding a plurality of exhaust grooves on the upper cylinder cover, the high-temperature and high-pressure gas discharged from the exhaust valve port is evenly diverted through the exhaust grooves, reducing the impact of the gas on the silencer cavity in the silencer cover and the generation of gas vortexes, thereby reducing noise and vibration, reducing exhaust losses, ensuring the stability of the compressor, and improving the performance and life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional view of the utility model;
[0012] Figure 2 It is the front view of the utility model;
[0013] In the figure: 1. Crankshaft mounting hole; 2. Exhaust valve plate mounting groove; 3. Muffler cover mounting seat; 4. Ventilation groove; 5. Exhaust groove; 6. Exhaust hole. DETAILED DESCRIPTION
[0014] See also Figure 1-2 The present embodiment is a shunt noise reduction upper cylinder head, comprising an upper cylinder head body, the upper cylinder head body is provided with an exhaust valve plate mounting groove 2, the exhaust valve plate mounting groove 2 is provided with an exhaust hole 6, the upper surface of the upper cylinder head body is provided with a silencer cover mounting seat 3, the silencer cover mounting seat 3 is provided with a ventilation groove 4, the ventilation groove 4 is connected with the exhaust valve plate mounting groove 2, the ventilation groove 4 is arranged on the outer periphery of the crankshaft mounting hole 1, and the silencer cover mounting seat 3 is also provided with a plurality of exhaust grooves 5 along the direction of the ventilation groove 4, one end of all the exhaust grooves 5 is connected with the ventilation groove 4, and the other end of the exhaust groove 5 extends to the outer circumference and exceeds the coverage range of the silencer cover.
[0015] Furthermore, the plurality of exhaust grooves 5 are arranged in a counterclockwise direction, and each exhaust groove 5 is a straight line.
[0016] Furthermore, the ventilation groove 4 is arc-shaped and arranged concentrically with the crankshaft mounting hole 1, and an angle β is set between the tangent line at the intersection of the exhaust groove 5 and the ventilation groove 4 and the exhaust groove 5, 10°<β<60°.
[0017] Furthermore, the width of the ventilation groove 4 is 1-3 mm.
[0018] Furthermore, the width of the exhaust groove 5 is 1-3 mm.
[0019] The utility model also provides a rotor compressor equipped with the above-mentioned split flow noise reduction upper cylinder cover, a silencer cover is installed on the silencer cover mounting seat 3, and the ventilation groove 4 is arranged within the coverage range of the silencer cover.
[0020] The working principle of the utility model is as follows: when the rotary compressor is running, exhaust gas is continuously generated, and the exhaust gas first enters the silencer cavity in the silencer cover, and then a part of the exhaust gas is diverted to each exhaust groove 5 through the arc-shaped ventilation groove 4 and discharged directly, and a part of the exhaust gas is discharged from the air outlet of the silencer cover. Since a part of the gas is diverted, the impact force of the gas in the silencer cover is reduced, and the generation of gas vortex is reduced, thereby achieving the purpose of reducing the exhaust kinetic energy loss and reducing the exhaust noise.
Claims
1. A split flow noise reduction upper cylinder head, comprising an upper cylinder head body, the upper cylinder head body is provided with an exhaust valve plate mounting groove, the exhaust valve plate mounting groove is provided with an exhaust hole, and the upper surface of the upper cylinder head body is provided with a silencer cover mounting seat, wherein: The silencer cover mounting seat is provided with a ventilation groove, which is connected to the exhaust valve plate mounting groove. The ventilation groove is arranged on the outer periphery of the crankshaft mounting hole. The silencer cover mounting seat is also provided with a plurality of exhaust grooves along the direction of the ventilation groove. One end of all the exhaust grooves is connected to the ventilation groove, and the other end of the exhaust groove extends to the outer circumference and exceeds the coverage range of the silencer cover.
2. The split flow noise reduction upper cylinder head according to claim 1 is characterized by: The plurality of exhaust grooves are arranged in a counterclockwise direction, and each exhaust groove is a straight line.
3. The split flow noise reduction upper cylinder head according to claim 2 is characterized by: The ventilation groove is arc-shaped and arranged concentrically with the crankshaft mounting hole. An angle β is provided between the tangent line at the intersection of the exhaust groove and the ventilation groove and the exhaust groove, and 10°<β<60°.
4. The split flow noise reduction upper cylinder head according to claim 1 is characterized by: The width of the ventilation groove is 1-3 mm.
5. The split flow noise reduction upper cylinder head according to claim 1 is characterized by: The width of the exhaust groove is 1-3 mm.
6. A rotary compressor, characterized in that: The utility model is provided with a flow-dividing noise-reducing upper cylinder head as claimed in any one of claims 1 to 5, a silencer cover is installed on a silencer cover mounting seat, and the ventilation groove is arranged within the coverage range of the silencer cover.