Silencers, compressors and their control methods and air conditioners

Abstract

This application provides a silencer, a compressor, a control method thereof, and an air conditioner. The silencer includes a cylindrical body, of which two are provided; each cylindrical body includes a silencing chamber; a connector has multiple isolated flow channels, each flow channel connecting to one of the two silencing chambers at both ends; the connector is provided with multiple adjustable valves, each valve corresponding to one of the flow channels, and the valves are adjusted to keep the flow channels open or closed. This application uses multiple flow channels connecting the two silencing chambers, and the valves control the opening and closing of the flow channels, changing the length between the two silencing chambers, thus achieving active adjustment of the silencing performance and effectively solving the problem of noise transmission from the air conditioner's indoor unit caused by compressor operation.

Description

Technical Field

[0001] This application belongs to the field of air conditioner technology, specifically relating to a muffler, a compressor and its control method, and an air conditioner. Background Technology

[0002] During the cooling or heating process of an air conditioner, the required performance and capacity of the air conditioner will change with the adjustment of the operating conditions or user. This requires the compressor to change its operating frequency to meet the ever-changing performance and capacity requirements. However, this leads to another problem: the changing compressor operating frequency causes changes in the pulsation pattern of the refrigerant in the pipeline, which ultimately produces different transmission noise problems in the indoor unit.

[0003] The conventional approach to solving the problem of noise transmission from the indoor unit is to install a simple expansion chamber silencer in the outdoor unit's piping. This reduces transmission loss due to refrigerant pulsation by changing the cross-sectional area of ​​the piping. However, changes in the required performance and capacity of the air conditioner alter the compressor's operating frequency, further changing the refrigerant pulsation pattern. Since traditional simple expansion chamber silencers have a fixed structure and only address specific noise transmission issues, they cannot meet the needs of variable noise transmission caused by compressor frequency changes. Therefore, a new type of silencer with adjustable noise reduction performance is required. Summary of the Invention

[0004] Therefore, this application provides a silencer, a compressor, a control method thereof, and an air conditioner, which can solve the problem of unadjustable noise reduction performance in the prior art.

[0005] To address the aforementioned problems, this application provides a muffler, comprising:

[0006] The cylinder has two parts; each cylinder includes a sound-absorbing cavity.

[0007] The connector has multiple isolated flow channels inside, and the two ends of each flow channel are respectively connected to the two noise-absorbing cavities;

[0008] The connector is equipped with multiple adjustable valves, each valve corresponding to a flow channel. The valves are adjusted to make the flow channel open or closed.

[0009] In some implementations...

[0010] The multiple flow channels are arranged in parallel, and the connector is also provided with two flow guide grooves located at both ends of the flow channels. The flow guide grooves are intersecting and connected to the flow channels; one end of each flow guide groove is connected to a sound-absorbing cavity.

[0011] In some implementations...

[0012] The connector includes a sealing box, with interfaces at both ends on one side of the sealing box, the interfaces communicating with the silencing cavity; the sealing box contains multiple partitions arranged in parallel to divide the interior of the sealing box into multiple flow channels; the two ends of the flow channels are connected to the interfaces.

[0013] In some implementations...

[0014] The extension direction of the flow channel is perpendicular to the extension direction of the interface.

[0015] In some implementations...

[0016] The sealing box includes a sealed box body and a box cover. The partition is disposed in the box body, and the valve is disposed on the box cover. The valve includes a sliding slider that can be slidably inserted into or slid out of the flow channel to make the flow channel in a conducting or blocking state.

[0017] In some implementations...

[0018] The box cover has a through hole, and the outer side of the box cover has a cavity, which is connected to the inside of the sealed box through the through hole; the slider is slidably disposed in the cavity.

[0019] In some implementations...

[0020] The chamber has pressure balancing channels on its opposite sidewalls so that when the slider is inserted into the flow channel, the pressure on both sides of the slider can be balanced.

[0021] In some implementations...

[0022] The partition plate is provided with a limiting protrusion, and the slider slides into or out of the flow channel along the limiting protrusion.

[0023] In some implementations...

[0024] The lid is equipped with a driving component, which drives the slider to move.

[0025] In some implementations...

[0026] The driving component includes a magnetic block and an electromagnetic induction coil. The magnetic block is disposed on the slider, and the electromagnetic induction coil is disposed on the cover. When the electromagnetic induction coil is energized, it generates a magnetic field that acts on the magnetic block to move the slider.

[0027] According to another aspect of this application, a compressor is provided, including the silencer as described above.

[0028] According to another aspect of this application, a method for controlling a compressor as described above is provided, comprising:

[0029] When the driving component includes an electromagnetic induction coil, the operating frequency of the compressor is obtained, and the transmitted sound generated at that operating frequency is determined;

[0030] If the transmitted sound exceeds the current muffler's muffler range, adjust the energization of the electromagnetic induction coil to move the corresponding slider, thereby adjusting the muffler's muffler range to the area where the transmitted sound is located.

[0031] In some implementations...

[0032] When the operating frequency of the compressor changes, the transmitted sound will change accordingly. If the transmitted sound is within the current muffler's muffler range, the current state is maintained; if the transmitted sound exceeds the current muffler's muffler range, the energization of the electromagnetic induction coil is adjusted to move the corresponding slider, thereby adjusting the muffler's muffler range to the area where the transmitted sound is located.

[0033] According to a third aspect of this application, an air conditioner is provided, including a silencer or a compressor as described above, and a compressor operating according to the control method described above.

[0034] This application provides a silencer, comprising: a cylindrical body, of which two are provided; each cylindrical body includes a silencing cavity; a connector having multiple mutually isolated flow channels, each flow channel having two silencing cavities connected at both ends; the connector having multiple adjustable valves, each valve corresponding to one of the flow channels, the valves being adjusted to make the flow channels open or closed.

[0035] This application uses multiple flow channels to connect two silencing chambers, and valves regulate the opening and closing of the flow channels, thereby changing the length between the two silencing chambers and realizing active adjustment of the silencing performance. This can effectively solve the problem of noise transmission in the air conditioner indoor unit caused by the operation of the compressor.

[0036] The slider moves by inserting and removing, completing the opening and closing of the corresponding flow channel and controlling the flow change from one silencing cavity to another. It has a simple and compact structure and good sealing performance. Attached Figure Description

[0037] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0038] Figure 1This is a schematic diagram of the structure of the muffler according to an embodiment of this application;

[0039] Figure 2 This is an exploded structural diagram of the muffler according to an embodiment of this application;

[0040] Figure 3 This is a three-dimensional structural diagram of the connector according to an embodiment of this application;

[0041] Figure 4 This is a front view of the connector according to an embodiment of this application;

[0042] Figure 5 Examples of this application Figure 4 The sectional view shown;

[0043] Figure 6 This is a schematic diagram of the connector housing structure according to an embodiment of this application;

[0044] Figure 7 This is a three-dimensional structural diagram of the connector housing according to an embodiment of this application;

[0045] Figure 8 This is a front view of the box lid according to an embodiment of this application;

[0046] Figure 9 Examples of this application Figure 8 The sectional view shown;

[0047] Figure 10 This is a three-dimensional structural diagram of the driving component according to an embodiment of this application;

[0048] Figure 11 This is a front view of the driving component according to an embodiment of this application;

[0049] Figure 12 Examples of this application Figure 11 Sectional view in;

[0050] Figure 13 This is a schematic diagram of the structure of the electromagnetic induction coil according to an embodiment of this application;

[0051] Figure 14 This is a comparison diagram of the transmission loss of the embodiment of this application and that of the conventional method;

[0052] Figure 15 This is a flowchart of the control method according to an embodiment of this application.

[0053] The reference numerals in the attached figures are as follows:

[0054] 1. First cylinder body; 11. External pipeline connection end of the first cylinder body; 12. Connection end between the first cylinder body and the connector; 13. Limiting ring of the first cylinder body;

[0055] 2. Second cylinder; 21. External pipeline connection end of the second cylinder; 22. Connection end between the second cylinder and the connector; 23. Limiting ring of the second cylinder;

[0056] 3. Connector; 31. Housing; 311. Housing interface; 312. Partition; 313. Limiting protrusion; 32. Housing cover; 321. Housing cover interface; 322. Chamber; 323. Mounting protrusion; 324. Balancing channel; 325. Limiting block; 33. Slider; 34. Magnetic block; 35. Drainage groove;

[0057] 4. Driving component; 41. Fixing device; 42. Electromagnetic induction coil; 43. Mounting groove; 44. Spacer bar. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0060] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of illustrative purposes and to facilitate understanding and reading by those skilled in the art, and are not intended to limit the conditions under which the invention can be implemented. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives achieved by the invention, should still fall within the scope of the technical content disclosed in the invention. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0062] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0065] See also Figures 1 to 15 As shown, according to an embodiment of this application, a muffler includes:

[0066] The cylinder has two parts; each cylinder includes a sound-absorbing cavity.

[0067] Connector 3 has multiple isolated flow channels inside, and the two ends of each flow channel are respectively connected to the two silencing cavities;

[0068] The connector 3 is equipped with multiple adjustable valves, each valve corresponding to a flow channel. The valves are adjusted to make the flow channel open or closed.

[0069] This application uses multiple flow channels to connect two silencing chambers, and valves regulate the opening and closing of the flow channels, thereby changing the length between the two silencing chambers and realizing active adjustment of the silencing performance. This can effectively solve the problem of noise transmission in the air conditioner indoor unit caused by the operation of the compressor.

[0070] Multiple flow channels are arranged between the two silencing chambers, and the opening or closing of each flow channel is adjustable, so that the path from one silencing chamber to the other is variable, including the change in length between the two silencing chambers. This allows for the adjustment of the silencing frequency. Relatively speaking, the silencer of this application can achieve the elimination of noise of more frequencies.

[0071] In some implementations...

[0072] The multiple flow channels are arranged in parallel, and the connector 3 is also provided with two flow guide grooves 35 located at both ends of the flow channels. The flow guide grooves 35 are intersecting and connected to the flow channels. One end of each flow guide groove 35 is connected to a sound-absorbing cavity.

[0073] The system employs a multi-channel structure arranged in parallel, with a guide groove 35 at each end of all channels. This allows all channels to connect to the silencing cavity via the guide groove 35. Since one end of the guide groove 35 connects to the silencing cavity, the paths between each parallel channel and the silencing cavity will differ. This ensures the adjustability of the multi-channel structure and achieves the elimination of noise at various frequencies.

[0074] In some implementations...

[0075] The connector 3 includes a sealing box, with interfaces on both ends of one side of the sealing box, the interfaces being connected to the silencing cavity; the sealing box contains a plurality of partitions 312 arranged in parallel to divide the interior of the sealing box into a plurality of flow channels; the two ends of the flow channels are connected to the interfaces.

[0076] Connector 3 adopts a sealed box structure, with interfaces communicating with the silencing chambers on both ends of one side. Multiple partitions 312 are installed inside the sealed box, allowing for the parallel arrangement of multiple flow channels. The structure is simple and easy to manufacture. One silencing chamber can reach another through different flow channels, only the path differs. The opening or closing of multiple flow channels can be combined to achieve noise cancellation effects at various frequencies.

[0077] In some implementations...

[0078] The extension direction of the flow channel is perpendicular to the extension direction of the interface.

[0079] The extension direction of the flow channel is set perpendicular to the extension direction of the interface, which makes it convenient to measure or calculate the frequency of noise that the flow channel can eliminate, and to achieve precise control of the number and position of the flow channel.

[0080] In some implementations...

[0081] The sealing box includes a box body 31 and a box cover 32 that are sealed and fastened together. The partition 312 is disposed inside the box body 31. The valve is disposed on the box cover 32. The valve includes a slider 33 that is slidably disposed. The slider 33 can be slidably inserted into or slid out of the flow channel so that the flow channel is in a conducting or blocking state.

[0082] Because a partition 312 is installed inside the sealed box, a combination of a split box body 31 and a box cover 32 is adopted, which facilitates the manufacture and installation of the partition 312. At the same time, the valve adopts a slider 33 structure on the box cover 32, which controls the flow channel by insertion or sliding out. The overall structure is simple and easy to operate.

[0083] For the split-type sealed box structure, the interface is composed of the box body interface 311 and the box cover interface 321 spliced ​​together.

[0084] In some implementations...

[0085] The cover 32 has a through hole, and the outer side of the cover 32 has a cavity 322, which is connected to the inside of the sealed box through the through hole; the slider 33 is slidably disposed in the cavity 322.

[0086] A chamber 322 is provided on the outer surface of the cover 32, and a slider 33 is disposed in the chamber 322. The slider 33 is inserted into or slid out of the flow channel through the through hole on the cover 32 to avoid fluid loss caused by the movement of the slider 33.

[0087] In some implementations...

[0088] The chamber 322 has a pressure balancing channel 324 on the opposite side wall so that when the slider 33 is inserted into the flow channel, the pressure on both sides of the slider 33 can be balanced.

[0089] Since there will be a pressure difference on both sides of the slider 33 when it is in the flow channel, a balance channel 324 is set on both sides of the chamber 322 to eliminate the pressure difference, reduce the resistance of the slider 33, and ensure that the slider 33 can smoothly slide from the chamber 322 into the flow channel or from the flow channel into the chamber 322.

[0090] The principle of pressure balance is that the fluid on the high-pressure side enters the chamber 322 through a pressure balance channel 324, and then reaches the low-pressure side through another pressure balance channel 324, thereby achieving pressure balance on both sides of the slider 33.

[0091] In some implementations...

[0092] The partition 312 is provided with a limiting protrusion 313, and the slider 33 slides into or out of the flow channel along the limiting protrusion 313.

[0093] To prevent the slider 33 from being impacted by the fluid when it is inserted into the flow channel, a limiting protrusion 313 is provided on the partition 312 to limit the sliding position of the slider 33 and make it move along the limiting protrusion 313.

[0094] The limiting protrusion 313 can specifically be two protruding ridges, and the two sides of the slider 33 abut against the two protruding ridges.

[0095] In some implementations...

[0096] The box cover 32 is provided with a driving component 4, which drives the slider 33 to move.

[0097] A drive component 4 is provided on the cover 32 to drive the slider 33 inside the chamber 322, which is relatively easy to install and operate.

[0098] In some implementations...

[0099] The driving component 4 includes a magnetic block 34 and an electromagnetic induction coil 42. The magnetic block 34 is disposed on the slider 33, and the electromagnetic induction coil 42 is disposed on the cover 32. When the electromagnetic induction coil 42 is energized, it generates a magnetic field that acts on the magnetic block 34 to move the slider 33.

[0100] The driving component 4 adopts an electromagnetic mechanism. The magnetic block 34 is placed on the slider 33 and is in the magnetic field of the electromagnetic induction coil 42. Under the action of the magnetic field of the electromagnetic induction coil 42, the movement of the slider 33 is controlled.

[0101] The magnetic block 34 can be fixed to the slider 33, such as by gluing or screw fixing, or one end of the slider 33 can be made of magnetic material.

[0102] The drive component 4 can be sleeved outside the chamber 322. Specifically, the outer wall of the chamber 322 can be provided with a mounting protrusion 323, and the inner wall of the drive component 4 can be provided with a mounting groove 43. The two are matched and inserted. The drive component 4 is provided with an electromagnetic induction coil 42. Since there are multiple flow channels and sliders 33, there are also multiple electromagnetic induction coils 42 and magnetic blocks 34. Adjacent electromagnetic induction coils 42 are separated and spaced apart by spacers 44.

[0103] In summary, this application discloses a series muffler with variable noise reduction performance, mainly composed of a first cylinder 1, a second cylinder 2, a connector 3, and a drive component 4. The first cylinder 1 has an external pipe connection end 11 at one end and a connection end 12 between the first cylinder and the connector at the other end, and is equipped with a first cylinder limiting ring 13 to control the insertion depth of the first cylinder 1 into the connector 3. The second cylinder 2 has an external pipe connection end 21 at one end and a connection end 22 between the second cylinder and the connector at the other end, and is equipped with a second cylinder limiting ring 23 to control the insertion depth of the second cylinder 2 into the connector 3.

[0104] The connector 3 mainly consists of a housing 31, a cover 32, and a slider 33. Multiple partitions 312 are evenly distributed on the housing 31, and limiting protrusions 313 are distributed on the partitions 312 to restrict the movement of the slider 33. A magnetic block 34 is fixed on one side of the slider 33. The slider 33 and the magnetic block 34 are placed in the corresponding chambers 322. There are four limiting blocks 325 on the top of each chamber 322 to prevent the slider 33 and the magnetic block 34 from moving to the top of the chamber 322 and blocking the pressure balance channel 324. The pressure balance channel 324 is distributed in the side wall of each chamber 322 to balance the pressure difference caused by the movement of the slider 33. Mounting protrusions 323 are also distributed on the outer side wall of the chamber 322 to facilitate the installation of the drive component 4. The drive component 4 is mounted on the connector 3 through the mounting groove 43 on the inner sidewall and the mounting protrusion 323. The drive component 4 is provided with an electromagnetic induction coil chamber that is separated by a spacer 44 and corresponds to the slider chamber. The electromagnetic induction coil 42 and the fixing device 41 of the electromagnetic induction coil 42 are mounted together in the electromagnetic induction coil chamber. The electromagnetic induction coil 42 and the fixing device 41 contain the electromagnetic induction coil 42 control chip.

[0105] This application modifies the flow channel to change the length between the two silencing cavities, thereby achieving the purpose of silencing; comparative experiments show that, as Figure 14 As shown, the sound transmission loss of Embodiments 1, 2 and 3 of this application is increased relative to the comparative example, thus indicating that more noise can be eliminated.

[0106] The comparative test parameters are: the dimensions of the two cylinders, the inlet and outlet radius of 3mm, the inner radius of the silencing cavity of 6mm, and the effective length of the cylinder of 40mm;

[0107] Comparative example: Simple expansion chamber silencer;

[0108] Example 1: Total flow channel length 20mm;

[0109] Example 2: Total flow channel length 40mm;

[0110] Example 3: Total flow channel length 60mm.

[0111] According to another aspect of this application, a compressor is provided, including the silencer as described above.

[0112] According to another aspect of this application, a method for controlling a compressor as described above is provided, comprising:

[0113] When the driving component includes an electromagnetic induction coil, the operating frequency of the compressor is obtained, and the transmitted sound generated at that operating frequency is determined;

[0114] If the transmitted sound exceeds the current muffler's muffler range, adjust the energization of the electromagnetic induction coil to move the corresponding slider, thereby adjusting the muffler's muffler range to the area where the transmitted sound is located.

[0115] In a compressor structure that includes a muffler, the noise generated by the compressor's operation usually corresponds to the operating frequency. Thus, the noise frequency can be determined by detecting the compressor's operating frequency. If the noise frequency is within the muffler's silencing range, silencing can be achieved without adjusting the slider's movement. If the noise frequency exceeds the muffler's silencing range, adjusting the slider's movement will adjust the muffler's silencing range accordingly, covering the noise frequency and achieving the purpose of silencing.

[0116] In some implementations...

[0117] When the operating frequency of the compressor changes, the transmitted sound will change accordingly. If the transmitted sound is within the current muffler's muffler range, the current state is maintained; if the transmitted sound exceeds the current muffler's muffler range, the energization of the electromagnetic induction coil is adjusted to move the corresponding slider, thereby adjusting the muffler's muffler range to the area where the transmitted sound is located.

[0118] For compressors with varying operating frequencies, it is necessary to intermittently monitor their operating frequency, such as... Figure 15 As shown, when a change in the compressor's operating frequency is detected, the system compares the transmitted sound with built-in data to determine if it falls within the effective noise reduction range of the current muffler. If it does, monitoring continues. If the transmitted sound is outside the effective noise reduction range, the system further compares the data with the muffler database and issues a drive control command. Specifically, the corresponding electromagnetic induction coil generates magnetic force, which, in conjunction with the magnetic block 34, drives the slider 33 to open or close the corresponding flow channel in the connector. This adjusts the length of the flow channel between the first and second cylinders, thereby altering the noise reduction performance of the entire series-connected muffler structure. This ensures that the transmitted sound remains within the effective noise reduction range of the muffler, ultimately improving the comfort of the indoor unit.

[0119] According to a third aspect of this application, an air conditioner is provided, including a silencer or a compressor as described above, and a compressor operating according to the control method described above.

[0120] During the cooling or heating process of an air conditioner, the performance and capacity required by the air conditioner will change with the adjustment of the operating conditions or the user. This requires the compressor to change its operating frequency to meet the ever-changing performance and capacity requirements. The changing compressor operating frequency causes changes in the pulsation pattern of the refrigerant in the pipeline, which ultimately produces different transmission noise problems in the indoor unit.

[0121] The air conditioner of this application uses the aforementioned silencer, which can drive the slider to move through the electromagnetic induction coil, thereby changing the length of the connecting section between the two series-connected silencer chambers, and thus achieving active adjustment of the silencer frequency and silencer performance. Compared with the simple expansion chamber silencer, the silencer performance is greatly improved, which can effectively solve the problem of sound transmission in the air conditioner indoor unit caused by the operation of the compressor. In addition, the structure is simple, compact and has good sealing performance.

[0122] It will be readily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

[0123] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above description is merely a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A silencer, characterized in that, include: The cylinder has two parts; each cylinder includes a sound-absorbing cavity. The connector (3) has multiple mutually isolated flow channels inside, and the two ends of each flow channel are respectively connected to the two silencing cavities; The connector (3) is provided with multiple adjustable valves, each valve corresponding to a flow channel. By adjusting the valves, the flow channel can be in a conducting or closed state, so that the path from one silencing cavity to another can be changed, and the length between the two silencing cavities can be changed, thereby achieving the adjustment of the silencing frequency.

2. The silencer according to claim 1, characterized in that: The multiple flow channels are arranged in parallel, and the connector (3) is also provided with two flow channels (35) located at both ends of the flow channels. The flow channels (35) are intersecting and connected to the flow channels. One end of each flow channel (35) is connected to a sound-absorbing cavity.

3. The silencer according to claim 2, characterized in that: The connector (3) includes a sealing box, and interfaces are provided at both ends on one side of the sealing box. The interfaces are connected to the silencing cavity. The sealing box is provided with multiple partitions (312), which are arranged in parallel to divide the interior of the sealing box into multiple flow channels. The two ends of the flow channels are connected to the interfaces.

4. The silencer according to claim 3, characterized in that: The extension direction of the flow channel is perpendicular to the extension direction of the interface.

5. The silencer according to claim 3 or 4, characterized in that: The sealing box includes a sealed box body (31) and a box cover (32). The partition (312) is disposed inside the box body (31). The valve is disposed on the box cover (32). The valve includes a sliding slider (33). The slider (33) can be slidably inserted into or slid out of the flow channel so that the flow channel is in a conducting or blocking state.

6. The silencer according to claim 5, characterized in that: The cover (32) has a through hole, and the outer side of the cover (32) has a cavity (322), which is connected to the inside of the sealed box through the through hole; the slider (33) is slidably disposed in the cavity (322).

7. The silencer according to claim 6, characterized in that: The chamber (322) has a pressure balancing channel (324) on the opposite side wall so that when the slider (33) is inserted into the flow channel, the pressure on both sides of the slider (33) can be balanced.

8. The silencer according to claim 7, characterized in that: The partition (312) is provided with a limiting protrusion (313), and the slider (33) slides into or out of the flow channel along the limiting protrusion (313).

9. The silencer according to claim 5, characterized in that: The cover (32) is provided with a driving component (4), which drives the slider (33) to move.

10. The silencer according to claim 9, characterized in that: The driving component (4) includes a magnetic block (34) and an electromagnetic induction coil (42). The magnetic block (34) is disposed on the slider (33), and the electromagnetic induction coil (42) is disposed on the cover (32). When the electromagnetic induction coil (42) is energized, it generates a magnetic field that acts on the magnetic block (34) to move the slider (33).

11. A compressor, characterized in that, Includes the silencer as described in any one of claims 1-10.

12. A control method for a compressor as described in claim 11, wherein when the muffler is the muffler as described in claim 9 or 10, characterized in that, The control method includes: When the drive component (4) includes an electromagnetic induction coil (42), the operating frequency of the compressor is obtained, and the transmitted sound generated at that operating frequency is determined; If the transmitted sound exceeds the current muffler's muffler range, adjust the energization of the electromagnetic induction coil (42) to move the corresponding slider (33) and adjust the muffler's muffler range to the area where the transmitted sound is located.

13. The control method according to claim 12, characterized in that: When the operating frequency of the compressor changes, the transmitted sound will change accordingly. If the transmitted sound is within the current muffler's muffler range, the current state is maintained; if the transmitted sound exceeds the current muffler's muffler range, the energization of the electromagnetic induction coil (42) is adjusted so that the corresponding slider (33) moves, adjusting the muffler's muffler range to the area where the transmitted sound is located.

14. An air conditioner, characterized in that, It includes a muffler as described in any one of claims 1-10 or a compressor as described in claim 11, and a compressor operating according to the control method described in any one of claims 12-13.

Images