Compressor and its sound attenuation control method, device, air conditioner and storage medium

Abstract

The present invention discloses a compressor and its silencing control method, device, air conditioner and storage medium. The compressor includes: a housing, a pump body assembly, a muffler, an opening switching member, a pressure pulsation sensor and a driving module. A plurality of opening shape changing parts for changing the opening shape of the muffler are provided on the opening switching member. The pressure pulsation sensor is used to collect the pressure pulsation signal at the opening and send the pressure pulsation signal to the control module for identification to confirm the target shape signal. The driving module drives the opening switching member to move according to the received target shape signal to perform the switching of the opening shape changing parts, and switches to the opening shape changing part corresponding to the target shape signal to cooperate with the opening correspondingly, so that the compressor can automatically adjust the opening shape of the muffler according to the difference in the pressure pulsation components near the outlet of the muffler under different working conditions, that is, the muffler can achieve the required noise reduction effect under different pulsation components, and the noise reduction ability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor, a noise reduction control method, a device, an air conditioner and a storage medium thereof. Background Art

[0002] The comfort of an air conditioner is usually an important reference factor for users to choose an air conditioner, and the size of the noise often has a great impact on the comfort of the air conditioner. In order to reduce the noise of the air conditioner compressor, a muffler is usually provided in the compressor to reduce the noise, so the noise and vibration of the compressor become an important evaluation index.

[0003] At present, large gas pulsation noise is generated at the exhaust port of the pump body of the rotary compressor, which has a significant impact on the compressor noise. For the pump body assembly of the existing rotary compressor on the market, a muffler is provided on the flange end face to solve the problem of gas pulsation noise at the exhaust port of the pump body. However, the current variable-frequency compressor has a wide operating frequency range and complex operating conditions, which have a great impact on the physical properties of the refrigerant, resulting in differences in gas pulsation components. The traditional muffler has a fixed noise reduction effect for each frequency band during design and cannot meet the noise reduction requirements for different pulsation components under different working conditions. Summary of the Invention

[0004] An embodiment of the present invention provides a compressor, a noise reduction control method, a device, an air conditioner and a storage medium thereof, aiming to solve the problem of poor noise reduction effect of the existing muffler under different working conditions.

[0005] In a first aspect, an embodiment of the present invention provides a compressor, including: a housing, a pump body assembly, a muffler, an opening switching member, a pressure pulsation sensor and a driving module. The pump body assembly is disposed in the housing; the muffler is installed on the pump body assembly, and an opening is provided on the muffler; the opening switching member is provided with a plurality of opening shape changing portions, and the shape of each opening shape changing portion is different; the pressure pulsation sensor is disposed in the housing and close to the opening, and the pressure pulsation sensor is used to monitor the pressure pulsation signal at the opening; the driving module is connected to the opening switching member, and the driving module is used to drive the opening switching member to move according to the received target shape signal so that the opening shape changing portion corresponding to the target shape signal cooperates with the opening to change the shape of the opening, wherein the target shape signal is determined by the pressure pulsation signal.

[0006] In the compressor provided by the embodiment of the present invention, the opening switching member includes a disk body, the disk body is connected to the driving module, the disk body is driven by the driving module to rotate, and a plurality of the opening shape changing portions are distributed along the rotation direction of the disk body.

[0007] In the compressor provided by the embodiment of the present invention, the opening shape changing part includes a first opening shape changing part, and the first opening shape changing part is a first circular hole formed in the disc body.

[0008] In the compressor provided by the embodiment of the present invention, the opening shape changing part includes a second opening shape changing part, and the second opening shape changing part is a first arc-shaped hole formed in the disc body.

[0009] In the compressor provided by the embodiment of the present invention, the opening shape changing part includes a third opening shape changing part, and the third opening shape changing part is two second arc-shaped holes arranged oppositely on the disc body.

[0010] In the compressor provided by the embodiment of the present invention, the opening shape changing part includes a fourth opening shape changing part, and the fourth opening shape changing part includes a second circular hole formed in the disc body and a cylinder surrounding the second circular hole.

[0011] In the compressor provided by the embodiment of the present invention, when the pulsation component of the pressure pulsation signal is 900 - 1200 Hz, the corresponding target shape signal is the first opening shape changing part; and / or when the pulsation component of the pressure pulsation signal is 1300 - 1500 Hz, the corresponding target shape signal is the second opening shape changing part; and / or when the pulsation component of the pressure pulsation signal is 1800 - 2000 Hz, the corresponding target shape signal is the third opening shape changing part; and / or when the pulsation component of the pressure pulsation signal is 2400 - 2600 Hz, the corresponding target shape signal is the fourth opening shape changing part.

[0012] In a second aspect, the embodiment of the present invention further provides a noise reduction control method for a compressor. The compressor is the compressor described in the first aspect. The method includes: collecting the pressure pulsation signal at the opening of the muffler and sending the pressure pulsation signal to a control module so that the control module determines the corresponding target shape signal according to the pulsation component in the pressure pulsation signal; receiving the target shape signal returned by the control module, and controlling a driving module to drive an opening switching member to move according to the target shape signal, so that the opening shape changing part corresponding to the target shape signal cooperates with the opening correspondingly to change the shape of the opening.

[0013] In a third aspect, an embodiment of the present invention further provides a silencing control device for a compressor, including: a collecting unit, configured to collect a pressure pulsation signal at an opening of a muffler and send the pressure pulsation signal to a control module so that the control module determines a corresponding target shape signal according to a pulsation component in the pressure pulsation signal; a driving unit, configured to receive the target shape signal returned by the control module and control a driving module to drive an opening switching member to move according to the target shape signal, so that an opening shape changing portion corresponding to the target shape signal cooperates with the opening correspondingly to change the shape of the opening.

[0014] In a fourth aspect, an embodiment of the present invention further provides an air conditioner, including a processor and a memory, where a computer program is stored on the memory, and when the processor executes the computer program, the method as described above is implemented.

[0015] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the above method can be implemented.

[0016] An embodiment of the present invention provides a compressor and its silencing control method, device, air conditioner and storage medium. The compressor includes: a housing, a pump body assembly, a muffler, an opening switching member, a pressure pulsation sensor and a driving module. A plurality of opening shape changing portions for changing the shape of the muffler opening are arranged on the opening switching member. The pressure pulsation sensor is used to collect the pressure pulsation signal at the opening and send the pressure pulsation signal to the control module for identification to confirm the target shape signal. The driving module drives the opening switching member to move according to the received target shape signal to perform the switching of the opening shape changing portion, and switches to the opening shape changing portion corresponding to the target shape signal to cooperate with the opening correspondingly. Thus, the compressor can automatically adjust the shape of the muffler opening according to the difference in the pressure pulsation components near the outlet of the muffler under different working conditions, ensure the silencing effect of the muffler, that is, enable the muffler to achieve the required silencing effect under different pulsation components, thereby optimizing the noise reduction ability of the compressor. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Schematic diagram of a pump body assembly in the prior art;

[0019] Figure 2Schematic diagram of the pulsation difference of the compressor under different working conditions;

[0020] Figure 3 Cross-sectional schematic diagram of the compressor provided by the embodiment of the present invention;

[0021] Figure 4 Schematic structural diagram of the pump body assembly of the compressor provided by the embodiment of the present invention;

[0022] Figure 5 Cross-sectional schematic diagram of the pump body assembly of the compressor provided by the embodiment of the present invention;

[0023] Figure 6 Schematic diagram of the opening switching member of the compressor provided by the embodiment of the present invention;

[0024] Figure 7 Schematic diagrams of four opening transmission loss curves of the compressor provided by the embodiment of the present invention;

[0025] Figure 8 Schematic diagram of the step flow of the noise reduction control method of the compressor provided by the embodiment of the present invention;

[0026] Figure 9 Schematic block diagram of the noise reduction control device of the compressor provided by the embodiment of the present invention;

[0027] Figure 10 Schematic block diagram of an air conditioner provided by the embodiment of the present invention; Description of the drawings:

[0029] 1. Housing; 11. Upper cover; 12. Lower cover; 2. Pump body assembly; 21. Upper flange; 22. Lower flange; 23. Cylinder; 24. Crankshaft; 25. Silencer; 31. Opening switching member; 311. First opening shape changing part; 312. Second opening shape changing part; 313. Third opening shape changing part; 314. Fourth opening shape changing part; 315. Disk body; 32. Driving module; 33. Pressure pulsation sensor; 4. Control module; 5. Stator; 6. Rotor; 7. Distributor assembly. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0032] It should also be understood that the terminology used in this specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification of the present invention and the appended claims, unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0033] It should be further understood that the term "and / or" used in this specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0034] As used in this specification and the appended claims, the term "if" can be interpreted, depending on the context, as "when", "once", "in response to determining" or "in response to detecting". Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted, depending on the context, as meaning "once determined", "in response to determining", "once [the described condition or event] is detected" or "in response to detecting [the described condition or event]".

[0035] An embodiment of the present invention provides a compressor, a muffling control method, a device, an air conditioner and a storage medium, which solve the problem that the existing muffler 25 has poor muffling effect under different working conditions. By driving a driving module 32 to drive an opening switching member 31 to switch different opening shape changing parts to change the shape of the opening of the muffler 25, the muffler 25 can achieve the required muffling effect under different pulsation components.

[0036] As Figure 1 shown, the pump body assembly 2 of the existing market rotor 6 compressor includes an upper flange 21, a lower flange 22, a cylinder 23, a crankshaft 24 and a muffler 25. The cylinder 23 is arranged between the upper and lower flanges 22, and the crankshaft 24 passes through the upper and lower flanges 22. By arranging the muffler 25 on the flange end face, the problem of gas pulsation noise at the exhaust port of the pump body is solved. However, the current variable-frequency compressor has a wide operating frequency and complex operating conditions, which have a great influence on the physical properties of the refrigerant, resulting in different gas pulsation components. As Figure 2 shown, Figure 2It is a pressure pulsation spectrum analysis diagram of gas pulsation of the compressor under different working conditions. Among them, the abscissa is the frequency (Hz), and the ordinate is the pressure pulsation (Pa), which reflects the magnitude of the pressure pulsation at different frequencies. It can be seen from the figure that there are differences in the pulsation component frequencies of the gas discharged from the pump body under two different working conditions. That is to say, when the compressor operates under different working conditions and frequencies, the gas pulsation components of the refrigerant discharged from the pump body are different, so the required noise reduction frequency bands are different. The traditional muffler 25 has been finalized in terms of the noise reduction effect in each frequency band during design and cannot meet the noise reduction requirements for different pulsation components under different working conditions. Therefore, how to ensure the noise reduction effect of the compressor muffler 25 under different working conditions has become an urgent problem to be solved in this field.

[0037] In the embodiment of the present invention, to solve the above problem of poor noise reduction effect, the technical solution is as follows: When the compressor operates, the pressure pulsation sensor 33 monitors the pressure pulsation signal in real time and transmits the monitored signal to the control module 4. The control module 4 identifies the current pulsation component, selects the required opening shape of the muffler 25 through the pulsation component to generate a target shape signal, and sends this target shape signal to the drive module 32 on the muffler 25. The drive module 32 rotates the opening switching member 31, thereby changing the opening shape, so that the muffler 25 can achieve the required noise reduction effect under different pulsation components, and optimize the noise reduction effect of the compressor.

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0039] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the compressor provided by the embodiment of the present invention. As Figure 3 shown, the compressor includes: a housing 1, a pump body assembly 2, a muffler 25, an opening switching member 31, a pressure pulsation sensor 33, and a drive module 32. The pump body assembly 2 is arranged in the housing 1; the muffler 25 is installed on the pump body assembly 2, and the muffler 25 is provided with an opening; the opening switching member 31 is provided with a plurality of opening shape changing parts, and the shape of each opening shape changing part is different; the pressure pulsation sensor 33 is arranged in the housing 1 and close to the position of the opening, and the pressure pulsation sensor 33 is used to monitor the pressure pulsation signal at the opening; the drive module 32 is connected to the opening switching member 31, and the drive module 32 is used to drive the opening switching member 31 to move according to the received target shape signal so that the opening shape changing part corresponding to the target shape signal cooperates with the opening to change the shape of the opening, wherein the target shape signal is determined by the pressure pulsation signal.

[0040] Specifically, the compressor includes an upper cover 11, a housing 1, a pump body assembly 2, a lower cover 12, a liquid distributor assembly 7, a stator 5, a rotor 6, and a pressure pulsation sensor 33. The upper cover 11 and the lower cover 12 are respectively arranged on the upper and lower sides of the housing 1. The pump body assembly 2 is disposed in the housing 1. The liquid distributor assembly 7 is located outside the housing 1 and is connected to the pump body assembly 2 in the housing 1. Both the rotor 6 and the stator 5 are disposed in the housing 1 and are located above the pump body assembly 2. The pump body assembly 2 includes an upper flange 21, a lower flange 22, a cylinder 23, and a crankshaft 24. The cylinder 23 is arranged between the upper and lower flanges 22. The crankshaft 24 passes through the upper and lower flanges 22. The silencer 25 is fixed on the end face of the upper flange 21 and can be fixed by screws. The drive module 32 can be installed on the silencer 25 and is located near the opening of the silencer 25. The opening switching member 31 is located on the opening of the silencer 25. The opening switching member 31 is provided with a plurality of opening shape changing portions, and each opening shape changing portion has a corresponding shape. The opening switching member 31 is connected to the drive module 32, and the drive module 32 can drive the opening switching member 31 to move, thereby driving the opening shape changing portions on the opening switching member 31 to cooperate with the opening of the silencer 25. Since the shapes of different opening shape changing portions are different, when corresponding cooperation is performed, different opening shape changing portions can change the opening of the silencer 25 into different shapes. It should be noted that there are various ways for the drive module 32 to drive the opening switching member 31 to move. For example, the opening switching member 31 includes a slide rail and a slide bar. The slide rail is arranged on the opening of the silencer 25, and the slide bar is provided with a plurality of opening shape changing portions. The drive module 32 drives the slide bar to slide along the slide rail, and the slide bar can slide along the slide rail so that different opening shape changing portions cooperate with the opening of the silencer 25 to change the shape of the opening. This embodiment provides a preferred implementation manner, which is specifically described as follows.

[0041] Refer to Figures 4 - 6, in one embodiment, the opening switching member 31 includes a disk body 315. The disk body 315 is connected to the driving module 32. The disk body 315 rotates under the drive of the driving module 32. A plurality of opening shape changing portions are distributed along the rotation direction of the disk body 315. Specifically, the opening switching member 31 is in the shape of a circular disk body 315. A threaded hole is provided at the rotation center of the disk body 315. The driving module 32 includes a servo motor. The output shaft of the servo motor drives the disk body 315 to rotate 360 degrees by cooperating with the threaded hole of the disk body 315. Of course, it can be understood that other driving methods can also be used as long as the disk body 315 can rotate, and it is not limited here. A plurality of opening shape changing portions are arranged at intervals in the rotation direction of the disk body 315. For example, four opening shape changing portions can be provided, namely a first opening shape changing portion 311, a second opening shape changing portion 312, a third opening shape changing portion 313, and a fourth opening shape changing portion 314. The four opening shape changing portions can change the opening of the silencer 25 into four different shapes. When it is necessary to change the opening of the silencer 25 into the first shape, the driving module 32 drives the disk body 315 to rotate a certain angle so that the first opening shape changing portion 311 exactly corresponds to and cooperates with the opening of the silencer 25. The corresponding cooperation can be understood as that the first opening shape changing portion 311 overlaps with the opening of the silencer 25, so that the shape of the opening of the silencer 25 is changed into the shape of the first opening shape changing portion 311, and the gas is discharged through the first opening shape changing portion 311. Similarly, when it is necessary to change the opening of the silencer 25 into the second shape, the third shape, and the fourth shape, the second opening shape changing portion 312, the third opening shape changing portion 313, and the fourth opening shape changing portion 314 respectively correspond to and cooperate with the opening of the silencer 25.

[0042] In this embodiment, the pressure pulsation sensor 33 is provided in the housing 1, which means that the pressure pulsation sensor is installed inside the housing 1. The specific installation position inside the housing 1 is not limited in this embodiment, as long as the installed pressure pulsation sensor 33 can be close to the opening. For example, the pressure pulsation sensor 33 is installed on the inner wall of the housing 1 and on the side close to the opening of the silencer 25. Another example is that the pressure pulsation sensor 33 can extend above the opening through a bracket fixed inside the housing. The pressure pulsation sensor 33 continuously monitors the pressure pulsation signal of the gas at the opening and sends the collected pressure pulsation signal to the control module 4. It should be noted that the control module 4 can be an external control module 4, such as the main control board of an air conditioner, or the control module 4 inside the compressor, and it is not limited here.

[0043] The control module 4 can identify the current pressure pulsation component, thereby determining the corresponding opening shape under this pulsation component, generating a corresponding target opening shape signal, and sending the target opening shape signal to the driving module 32. In this way, the driving module 32 can drive the disk body 315 to rotate according to the target opening shape signal and select the corresponding opening shape change part.

[0044] In a specific implementation, for example, the opening shape signals include a first opening shape signal corresponding to the first opening shape, a second opening shape signal corresponding to the second opening shape, a third opening shape signal corresponding to the third opening shape, and a fourth opening shape signal corresponding to the fourth opening shape. When the control module 4 receives the pressure pulsation signal, it first identifies the current pressure pulsation component. Here, the "pulsation component" refers to the frequency component with relatively large pressure pulsation. For example, 900 - 1200 Hz, 1300 - 1500 Hz, 1800 - 2000 Hz, and 2400 - 2600 Hz, etc. To facilitate the understanding of the pulsation component in this embodiment, an example is given below for illustration. Assume that the pulsation component is 900 - 1200 Hz under a certain working condition. In the frequency band of 900 - 1200 Hz under this working condition, the pressure value of the gas is significantly greater than that in other frequency bands. Then, the frequency band of 900 - 1200 Hz is identified as the pulsation component. After identifying the pulsation component, determine the opening shape under this pulsation component. For example, the opening shape corresponding to the pulsation component of 900 - 1200 Hz is the first opening shape. In this way, a first opening shape signal can be generated, and this first opening shape signal is the target opening shape signal. Finally, the control module 4 sends this target opening shape signal to the driving module 32, and the driving module 32 drives the disk body 315 to rotate a certain angle according to this target opening shape signal, so that the first opening shape change part 311 is correspondingly matched with the opening, thereby changing the opening to the first opening shape. Similarly, the control actions under other pulsation components are similar and will not be elaborated here. Because, under different pulsation components, different-shaped openings have different noise reduction effects. Assume that under the pulsation component of 900 - 1200 Hz, the noise reduction effect of the first opening shape can reach 70 dB, and the noise reduction effects of the second opening shape, the third opening shape, and the fourth opening shape are 20 dB. Then obviously, the noise reduction effect of the first opening shape is the best, so the first opening shape change part 311 is selected, and the opening of the muffler 25 is changed to the first shape through the first opening shape change part 311.

[0045] In order to measure the best sound absorption effect under different pulsating components, the inventor determines the best opening shape based on a large number of experimental tests. Next, in this embodiment, four best opening shapes under four pulsating components of 900 - 1200 Hz, 1300 - 1500 Hz, 1800 - 2000 Hz, and 2400 - 2600 Hz will be proposed. Of course, it can be understood that the opening shapes in this embodiment are only partial implementation manners. In other embodiments, there can be more numbers and more shapes of openings. However, any change in the opening shape of the muffler 25 achieved through the above inventive concept should be within the protection scope of this patent.

[0046] Referring to Figure 6 and Figure 7 , in this embodiment, under the pulsating component of 900 - 1200 Hz, the corresponding best opening shape is a round hole. Therefore, the first opening shape changing part 311 in this embodiment is the first round hole opened on the disk body 315. Specifically, it can be referred to Figure 6 as shown in Figure 6 which is the transmission loss curve graph of 4 opening shapes. Among them, the abscissa is the frequency (Hz), and the ordinate is the transmission loss (dB). Each curve reflects the sound absorption effect of the muffler 25 on each frequency component under 1 opening shape. The higher the transmission loss, the better the sound absorption effect. It can be seen from the figure that under the pulsating component of 900 - 1200 Hz, the transmission loss of the first opening shape can reach 70 dB, and the transmission losses of the second opening shape, the third opening shape, and the fourth opening shape are 20 dB. Then obviously, the sound absorption effect of the first opening shape is the best, so the first opening shape changing part 311 is selected, and the opening of the muffler 25 is changed to the first shape through the first opening shape changing part 311, so as to achieve the best sound absorption effect.

[0047] Continuing to refer to Figure 6 and Figure 7 , in this embodiment, under the pulsating component of 1300 - 1500 Hz, the corresponding best opening shape is the first arc-shaped hole. Therefore, the second opening shape changing part 312 in this embodiment is the first arc-shaped hole opened on the disk body 315, and this first arc-shaped hole is similar to the shape of the moon. Under the pulsating component of 1300 - 1500 Hz, the transmission loss of the second opening shape can reach 65 dB, the transmission loss of the third opening shape is 45 dB, and the transmission losses of the first opening shape and the fourth opening shape are 20 dB. Then obviously, the sound absorption effect of the second opening shape is the best, so the second opening shape changing part 312 is selected, and the opening of the muffler 25 is changed to the second shape through the second opening shape changing part 312, so as to achieve the best sound absorption effect.

[0048] Continuing to refer to Figure 6 andFigure 7 , in this embodiment, under the pulsating component of 1800 - 2000 Hz, the corresponding optimal opening shape is two second arc-shaped holes arranged oppositely. Therefore, the third opening shape changing part 313 in this embodiment is two second arc-shaped holes arranged oppositely and opened on the disk body 315. This arc-shaped hole is similar to the shape of the moon. Arranged oppositely means that the inner curved lines of the two arc-shaped holes are arranged facing each other, and the outer curved lines of the two arc-shaped holes are arranged back to back in opposite directions. Among them, the inner curved line is a curve with a relatively small curvature, and the outer curved line is a curve with a relatively large curvature. Under the pulsating component of 1300 - 1500 Hz, the transmission loss of the third opening shape can reach 65 dB, the transmission loss of the second opening shape is 50 dB, the transmission loss of the fourth opening shape is 45 dB, and the transmission loss of the first opening shape is 20 dB. Then obviously, the third opening shape has the best sound absorption effect. Therefore, the third opening shape changing part 313 is selected, and the opening of the muffler 25 is changed to the third shape through the third opening shape changing part 313, so as to achieve the best sound absorption effect.

[0049] Continue to refer to Figure 6 and Figure 7 , in this embodiment, under the pulsating component of 2400 - 2600 Hz, the corresponding optimal opening shape is a cylindrical hole. Therefore, the fourth opening shape changing part 314 in this embodiment includes a second round hole opened on the disk body 315 and a cylinder surrounding the second round hole. This cylinder is a hollow cylinder and is communicated with the second round hole. Under the pulsating component of 2400 - 2600 Hz, the transmission loss of the fourth opening shape can reach 70 dB, the transmission loss of the third opening shape is 45 dB, and the transmission losses of the first opening shape and the second opening shape are 20 dB. Then obviously, the fourth opening shape has the best sound absorption effect. Therefore, the fourth opening shape changing part 314 is selected, and the opening of the muffler 25 is changed to the fourth shape through the fourth opening shape changing part 314, so as to achieve the best sound absorption effect.

[0050] Refer to Figure 8 As shown, the embodiment of the present invention also provides a muffling control method for a compressor. The compressor is the compressor described in the above embodiment. Figure 8 is a step flowchart of a muffling control method for a compressor provided by the embodiment of the present invention. This control method includes steps: S110 - S120.

[0051] S110. Collect the pressure pulsation signal at the opening of the muffler, and send the pressure pulsation signal to the control module so that the control module determines the corresponding target shape signal according to the pulsating component in the pressure pulsation signal;

[0052] S120. Receive the target shape signal returned by the control module, and control the driving module to drive the opening switching member to move according to the target shape signal, so that the opening shape changing part corresponding to the target shape signal cooperates with the opening correspondingly to change the shape of the opening.

[0053] In this embodiment, the pressure pulsation sensor in the housing monitors the pressure pulsation signal near the opening of the muffler in real time, and uploads the pressure pulsation signal to an external control module. The external control module identifies the current pressure pulsation components, determines the corresponding opening shape under this pulsation component, generates a target opening shape signal corresponding to the opening shape, and sends the target opening shape signal to the driving module. The driving module drives the disk to rotate according to the target opening shape signal to change the opening shape and achieve different muffling effects. It should be noted that the generation process of the target opening shape signal in the control module is as follows: after receiving the pressure pulsation signal, first identify the pulsation components in the pressure pulsation signal. The pulsation components refer to "frequency components with large pressure pulsations". For example, 900 - 1200 Hz, 1300 - 1500 Hz, 1800 - 2000 Hz, and 2400 - 2600 Hz, that is, the frequency bands where relatively large pressure values are generally considered to exist are considered pulsation components; after determining the pulsation components, generate a target opening shape signal corresponding to the pulsation component according to the mapping table between the pulsation components and the opening shape signals. The mapping table is pre-set, and its mapping relationship is as follows: "900 - 1200 Hz: the first opening shape signal"; "1300 - 1500 Hz: the second opening shape signal"; "1800 - 2000 Hz: the third opening shape signal"; "2400 - 2600 Hz: the fourth opening shape signal"; determine one of the mapped opening shape signals as the target opening shape signal, and finally send the target opening shape signal to the driving module. The driving module drives the disk to rotate and selects the corresponding opening shape changing part to change the muffler opening to the corresponding shape. Thus, the muffler can achieve the required muffling effect under different pulsation components.

[0054] Figure 9 It is a schematic block diagram of a muffling control device 200 for a compressor provided by an embodiment of the present invention. As Figure 9 shown, corresponding to the above muffling control method for the compressor, the present invention also provides a muffling control device 200 for the compressor. The muffling control device 200 for the compressor includes units for executing the above muffling control method for the compressor, and this device can be configured in an air conditioner. Specifically, please refer to Figure 9 . The muffling control device 200 for the compressor includes a collection unit 201 and a driving unit 202.

[0055] Among them, the acquisition unit 201 is configured to acquire the pressure pulsation signal at the opening of the muffler and send the pressure pulsation signal to the control module so that the control module determines the corresponding target shape signal according to the pulsation component in the pressure pulsation signal; the driving unit 202 is configured to receive the target shape signal returned by the control module and control the driving module to drive the opening switching member to move according to the target shape signal, so that the opening shape changing portion corresponding to the target shape signal is correspondingly matched with the opening to change the shape of the opening.

[0056] The muffler control device of the above compressor can be implemented in the form of a computer program, and this computer program can run on an air conditioner as shown in Figure 10 shown.

[0057] Please refer to Figure 10 , Figure 10 which is a schematic block diagram of an air conditioner provided by an embodiment of the present invention. The air conditioner 300 is a device having the above compressor.

[0058] Referring to Figure 10 , the air conditioner 300 includes a processor 302, a memory, and a network interface 305 connected through a system bus 301. Among them, the memory may include a non-volatile storage medium 303 and an internal memory 304.

[0059] The non-volatile storage medium 303 can store an operating system 3031 and a computer program 3032. When the computer program 3032 is executed, the processor 302 can be made to execute a muffler control method for a compressor.

[0060] The processor 302 is used to provide computing and control capabilities to support the operation of the entire air conditioner 300.

[0061] The internal memory 304 provides an environment for the operation of the computer program 3032 in the non-volatile storage medium 303. When the computer program 3032 is executed by the processor 302, the processor 302 can be made to execute a muffler control method for a compressor.

[0062] The network interface 305 is used for network communication with other devices. Those skilled in the art can understand that Figure 10 the structure shown in

[0063] Among them, the processor 302 is used to run the computer program 3032 stored in the memory to implement any embodiment of the above-mentioned noise reduction control method for the compressor.

[0064] It should be understood that in the embodiment of the present invention, the processor 302 may be a central processing unit (CPU), and the processor 302 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0065] Those of ordinary skill in the art can understand that all or part of the processes in the methods of implementing the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a storage medium, and the storage medium is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the above method embodiments.

[0066] Therefore, the present invention also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program. When the computer program is executed by the processor, the processor is caused to execute any embodiment of the above-mentioned noise reduction control method for the compressor.

[0067] The storage medium may be a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disc, etc., all of which are computer-readable storage media that can store program codes.

[0068] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0069] In several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0070] The steps in the method embodiments of the present invention can be adjusted, combined, and deleted according to actual needs. The units in the apparatus embodiments of the present invention can be combined, divided, and deleted according to actual needs. In addition, the functional units in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0071] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing an air conditioner to execute all or part of the steps of the methods described in each embodiment of the present invention.

[0072] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0073] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications therein.

[0074] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A compressor, characterized in that, Comprising: A housing; A pump body assembly disposed in the housing; A silencer mounted on the pump body assembly, the silencer having an opening; An opening switching member located on the opening, the opening switching member comprising a disk body, and a plurality of opening shape changing portions are distributed along the rotation direction of the disk body, and the shape of each opening shape changing portion is different; A pressure pulsation sensor disposed in the housing and near the opening, the pressure pulsation sensor being used to monitor the pressure pulsation signal at the opening; A driving module connected to the disk body, the driving module being used to drive the disk body to rotate according to the received target shape signal so that the opening shape changing portion corresponding to the target shape signal cooperates with the opening to change the shape of the opening, wherein the target shape signal is determined by the pressure pulsation signal.

2. The compressor according to claim 1, characterized in that, The opening shape changing portion includes a first opening shape changing portion, and the first opening shape changing portion is a first circular hole formed in the disk body.

3. The compressor according to claim 2, characterized in that, The opening shape changing portion includes a second opening shape changing portion, and the second opening shape changing portion is a first arc-shaped hole formed in the disk body.

4. The compressor according to claim 3, characterized in that, The opening shape changing portion includes a third opening shape changing portion, and the third opening shape changing portion is two second arc-shaped holes arranged oppositely on the disk body.

5. The compressor according to claim 4, characterized in that, The opening shape changing portion includes a fourth opening shape changing portion, and the fourth opening shape changing portion includes a second circular hole formed in the disk body and a cylinder surrounding the second circular hole.

6. The compressor according to claim 5, characterized in that, When the pulsation component of the pressure pulsation signal is 900 - 1200 Hz, the corresponding one to the target shape signal is the first opening shape changing portion; and / or When the pulsation component of the pressure pulsation signal is 1300 - 1500 Hz, the corresponding one to the target shape signal is the second opening shape changing portion; and / or When the pulsation component of the pressure pulsation signal is 1800 - 2000 Hz, the corresponding one to the target shape signal is the third opening shape changing portion; and / or When the pulsation component of the pressure pulsation signal is 2400 - 2600 Hz, the corresponding one to the target shape signal is the fourth opening shape changing portion.

7. A noise reduction control method for a compressor, characterized in that, The compressor is the compressor according to any one of claims 1 - 6, and the method includes: Collecting the pressure pulsation signal at the opening of the silencer and sending the pressure pulsation signal to a control module so that the control module determines the corresponding target shape signal according to the pulsation component in the pressure pulsation signal; Receiving the target shape signal returned by the control module, and controlling the driving module to drive the opening switching member to move according to the target shape signal so that the opening shape changing portion corresponding to the target shape signal cooperates with the opening to change the shape of the opening.

8. A noise reduction control device for a compressor, characterized in that, Applied to the compressor according to any one of claims 1 - 6, the device includes: A collecting unit for collecting the pressure pulsation signal at the opening of the silencer and sending the pressure pulsation signal to a control module so that the control module determines the corresponding target shape signal according to the pulsation component in the pressure pulsation signal; A driving unit, configured to receive the target shape signal returned by the control module, and control a driving module to drive an opening switching member to move according to the target shape signal, so that an opening shape changing part corresponding to the target shape signal is in corresponding cooperation with the opening to change the shape of the opening.

9. An air conditioner, comprising a processor and a memory, wherein a computer program is stored on the memory, and when the processor executes the computer program, the method according to claim 7 is implemented.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and when the computer program is executed by a processor, the method described in claim 7 can be implemented.

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