CN-116816642-B - Compressor and air conditioner

CN116816642BCN 116816642 BCN116816642 BCN 116816642BCN-116816642-B

Abstract

The invention discloses a compressor and an air conditioner, wherein a compression mechanism for compressing refrigerant is arranged in an inner cavity of the compressor, the compression mechanism comprises an air cylinder, the air cylinder is connected with a bearing, a bearing exhaust hole communicated with a compression cavity of the air cylinder is arranged on the bearing, the compression mechanism further comprises an exhaust valve block and a lift limiter, the exhaust valve block is used for closing or opening the bearing exhaust hole, the lift limiter is arranged above the exhaust valve block and is used for limiting the displacement of the exhaust valve block, and a driving part is used for enabling the exhaust valve block and the lift limiter to move relatively so as to adjust the effective length of the exhaust valve block, so that the effective length of the exhaust valve block of the compressor can be adjusted in a self-adaptive manner under different rotation frequencies of the compressor, and the problems of abnormal sound generation during low frequency and delayed closing during high frequency of the compressor are avoided.

Inventors

Huo Dehao
CAO FALI
BAI ZHENGCHAO
SONG BIN
LU HAIBIN

Assignees

青岛海信日立空调系统有限公司

Dates

Publication Date: 20260508
Application Date: 20230524

Claims (8)

1. The utility model provides a compressor, is equipped with the compression mechanism who is used for compressing refrigerant in its inner chamber, compression mechanism includes the cylinder, the bearing is connected to the cylinder, be equipped with on the bearing with the bearing exhaust hole of the compression chamber intercommunication of cylinder, its characterized in that, compression mechanism still includes: an exhaust valve sheet for closing or opening the bearing exhaust hole; the lift limiter is arranged above the exhaust valve plate and used for limiting the displacement of the exhaust valve plate; a driving part for generating relative motion between the exhaust valve plate and the lift limiter to adjust an effective length of the exhaust valve plate; The driving part drives the lift limiter and the exhaust valve plate to generate relative motion according to the rotation frequency of the compressor; When the compressor has a low-frequency slapping phenomenon, the driving part drives the lift limiter and the exhaust valve plate to move away from each other so as to increase the effective length of the exhaust valve plate; when the high-frequency delay closing phenomenon occurs to the compressor, the driving part drives the lift limiter and the exhaust valve plate to move close to each other so as to reduce the effective length of the exhaust valve plate; the system calculates and obtains the airflow thrust of the compressor under the frequency conversion according to the frequency conversion of the compressor; the system calculates the elasticity of the exhaust valve plate according to the initial structural parameters of the exhaust valve plate and the lift limiter; the system calculates and obtains the running track of the exhaust valve plate under the rotating frequency according to the airflow thrust and the elasticity of the exhaust valve plate; Judging whether the compressor has the phenomenon of low-frequency slapping or high-frequency delayed closing according to the running track of the exhaust valve plate by the system; if the lift limiter exists, the driving part drives the lift limiter and the exhaust valve plate to generate relative motion; if not, the driving part does not move.
2. The compressor of claim 1, wherein, And in the process of generating relative motion between the lift limiter and the exhaust valve plate driven by the driving part, the system obtains the optimal effective length of the exhaust valve plate through iterative calculation, and then the driving part stops.
3. A compressor according to claim 1 or 2, wherein, The control process of the driving part for driving the lift limiter and the exhaust valve plate to generate relative movement comprises a coarse control process and a fine control process, wherein the coarse control process is executed firstly, and then the fine control process is executed; In the course of coarse control, the system calculates the coarse effective length of the exhaust valve plate under different rotation frequencies of the compressor according to the structural parameters of the exhaust valve plate and the lift limiter, and the driving part drives the lift limiter and the exhaust valve plate to generate relative motion so that the exhaust valve plate reaches the state of the coarse effective length.
4. A compressor according to claim 3, wherein, The fine tuning control process includes: the system calculates and obtains the airflow thrust of the compressor under the frequency conversion according to the frequency conversion of the compressor; the system calculates the elasticity of the exhaust valve plate according to the initial structural parameters of the exhaust valve plate and the lift limiter; the system calculates and obtains the running track of the exhaust valve plate under the rotating frequency according to the airflow thrust and the elasticity of the exhaust valve plate; Judging whether the compressor has the phenomenon of low-frequency slapping or high-frequency delayed closing according to the running track of the exhaust valve plate by the system; if the lift limiter exists, the driving part drives the lift limiter and the exhaust valve plate to generate relative motion; if not, the driving part does not move.
5. A compressor according to claim 1 or 2, wherein, The driving part drives the lift limiter to move forwards or backwards relative to the exhaust valve plate so as to adjust the effective length of the exhaust valve plate.
6. The compressor of claim 5, wherein, The bearing is provided with a first limiting part, one end of the lift limiter is provided with a second limiting part, and the first limiting part is in sliding fit with the second limiting part, so that the lift limiter moves along the bearing under the drive of the driving part.
7. The compressor of claim 5, wherein, One end of the exhaust valve plate is fixedly arranged on the bearing, one end of the lift limiter faces the bottom surface of the exhaust valve plate and is provided with a plurality of rolling parts which are arranged at intervals, and the rolling parts are in rolling contact with the exhaust valve plate.
8. An air conditioner comprising the compressor according to any one of claims 1 to 7.

Description

Compressor and air conditioner Technical Field The invention relates to the technical field of air conditioners, in particular to a compressor and an air conditioner. Background The current development of compressors has reached a bottleneck period, and as the range of the compressor operation is larger and larger, problems are also slowly emerging. On the one hand, the performance of the compressor is not linearly increased with the increase of the operation frequency of the compressor, but gradually approaches a certain value or is worse than the low-frequency performance, and on the other hand, the compressor has a relatively obvious phenomenon of the beat noise of abnormal sound of 'pyridazine' during the low-frequency operation of the compressor. In view of the above problems, the determination is performed after the exploration, because the optimal operating frequency of the valve plate and the lift limiter is determined simultaneously after the boundary parameter design. If the compressor runs at low frequency, the situation of chatter, repeatedly beating lift limit and upper bearing surface is easy to occur, thereby causing abnormal sound of 'pyridazin' to influence hearing, and if the compressor runs at high frequency, the phenomenon that the valve plate cannot be normally closed exists, so that the performance of the compressor is greatly reduced. The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention Aiming at the problems pointed out in the background art, the invention provides a compressor and an air conditioner, which can realize the self-adaptive adjustment of the effective length of an exhaust valve plate of the compressor under different rotation frequencies of the compressor, and avoid the problems of abnormal sound generation at low frequency and delayed closing at high frequency of the compressor. In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme: In some embodiments of the present application, a compression mechanism for compressing a refrigerant is provided in an inner cavity of the compressor, the compression mechanism includes a cylinder, the cylinder is connected with a bearing, a bearing exhaust hole is provided on the bearing and is communicated with a compression cavity of the cylinder, the compression mechanism further includes an exhaust valve plate and a lift limiter, the exhaust valve plate is used for closing or opening the bearing exhaust hole, the lift limiter is provided above the exhaust valve plate and is used for limiting displacement of the exhaust valve plate, and the driving part is used for making relative movement between the exhaust valve plate and the lift limiter to adjust effective length of the exhaust valve plate, so that the effective length of the exhaust valve plate of the compressor can be adaptively adjusted under different rotation frequencies of the compressor, and problems of abnormal sound generation during low frequency and delayed closing during high frequency of the compressor are avoided. In some embodiments of the present application, the driving part drives the lift limiter and the exhaust valve plate to generate relative motion according to the rotation frequency of the compressor; When the compressor has a low-frequency slapping phenomenon, the driving part drives the lift limiter and the exhaust valve plate to move away from each other so as to increase the effective length of the exhaust valve plate; When the high-frequency delay closing phenomenon occurs to the compressor, the driving part drives the lift limiter and the exhaust valve plate to move close to each other so as to reduce the effective length of the exhaust valve plate. The compressor provided by the application realizes the self-adaptive control of the effective length of the exhaust valve plate by only acquiring the rotation frequency of the compressor and the necessary structural parameters of the exhaust valve plate, the lift limiter and the air cylinder and then combining the driving of the drive part on the exhaust valve plate and/or the lift limiter, thereby realizing the solving of the performance and abnormal sound of the compressor. In some embodiments of the present application, the system calculates the airflow thrust of the compressor at the operating frequency according to the compressor rotation frequency; the system calculates the elasticity of the exhaust valve plate according to the initial structural parameters of the exhaust valve plate and the lift limiter; The system calculates and obtains the running track of the exhaust valve plate under the running frequency according to the air flow thrust and the elastic force of the exhaust valve plate; Judging whether the compressor ha