silencer, compressor, air conditioner

Abstract

This invention provides a muffler, a compressor, and an air conditioner. The muffler includes a muffler body having a flow chamber, a first exhaust passage, a first silencing chamber, a first exhaust port, and a first vent. The flow chamber is connected to the outside of the muffler body through the first exhaust passage, and the first silencing chamber is connected to the outside of the first exhaust port through the first exhaust port. The two ends of the first vent lead to the flow chamber and the first silencing chamber, respectively. A first valve body is located in the first silencing chamber and can open or close the first vent according to the flow rate of the fluid flowing in the first exhaust passage. According to this invention, because the first silencing chamber diverts the gaseous refrigerant flowing in the flow chamber when the exhaust pulsation is large, the gaseous refrigerant with different flow rates is automatically matched with the corresponding flow path and chamber, thus optimizing the exhaust pulsation problem. At the same time, adaptively adjusting the flow path and chamber corresponding to the gaseous refrigerant with different flow rates also achieves noise reduction for multiple frequency bands.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a muffler, compressor, and air conditioner. Background Technology

[0002] With the steady improvement of my country's productivity, household and commercial air conditioners are widely used. At the same time, as people's pursuit of a better life increases, users have become more stringent in their requirements regarding the noise level of the compressors in air conditioning systems. An effective way to reduce compressor noise is usually to install a silencer on the compressor pump body. However, most silencers can only reduce noise in specific frequency bands and cannot solve the problem of excessive exhaust pulsation from the pump body. Summary of the Invention

[0003] Therefore, the present invention provides a muffler that can solve the technical problem that the muffler installed on the pump body of the compressor can only reduce noise in a specific frequency band and cannot overcome the defect of excessive exhaust pulsation of the pump body.

[0004] To address the aforementioned problems, the present invention provides a muffler, comprising a muffler body and a first valve body mechanism. The muffler body has a flow chamber, a first exhaust channel, a first silencing chamber, a first exhaust port, and a first vent. The flow chamber communicates with the outside of the muffler body through the first exhaust channel, and the first silencing chamber communicates with the outside of the muffler body through the first exhaust port. One end of the first vent leads to the flow chamber, and the other end leads to the first silencing chamber. The first valve body mechanism is installed within the muffler body and includes a first valve body located within the first silencing chamber. The first valve body has a first open state where the first vent is opened to connect the flow chamber and the first silencing chamber, and a first closed state where the first vent is closed to isolate the flow chamber from the first silencing chamber.

[0005] In some embodiments, a first receiving groove is constructed on the side wall of the first exhaust passage. The first receiving groove is separated from the first silencing chamber by a first partition wall. The first valve body mechanism further includes a first activator and a first connector. The first activator is disposed in the first receiving groove and can slide along the first receiving groove. One end of the first connector is connected to the first activator, and the other end of the first connector passes through the first partition wall and is connected to the first valve body. During the sliding process along the first receiving groove, the first activator drives the first valve body to switch between the first open state and the first closed state.

[0006] In some embodiments, the muffler body is assembled on a target component, the target component having an exhaust port whose position corresponds to the position of the flow chamber, the first receiving groove having a first opening facing the first exhaust channel and a second opening facing the target component, the first activator closing the first opening, and the target component closing the second opening; and / or, the first activator includes a first plate and two first side plates respectively connected to both sides of the first plate, the two first side plates respectively contacting the two groove walls of the first receiving groove, and the two first side plates being located on the side of the first plate facing away from the first exhaust channel.

[0007] In some embodiments, a first rotating shaft is provided in the first silencing chamber, the first valve body is mounted on the first rotating shaft, and the first valve body can rotate about the first rotating shaft. A first flow-through hole is formed on the first valve body, the first flow-through hole penetrates the first valve body, and the other end of the first connector penetrates the first partition wall and is hinged to the first valve body. When the first flow-through hole is connected to the first vent hole, the first valve body is in the first open state; when the first flow-through hole is not connected to the first vent hole, the first valve body is in the first closed state.

[0008] In some embodiments, the first valve body is a cylindrical structure, and a first common wall is formed between the flow chamber and the first silencer chamber. A first arc surface is formed on the first common wall that contacts the first valve body. The first arc surface is adapted to the first valve body, and the first vent hole penetrates the first common wall from the first arc surface.

[0009] In some embodiments, the muffler body further includes a second exhaust channel, a second silencing chamber, a second exhaust port, and a second vent. The flow chamber is connected to the outside of the muffler body through the second exhaust channel, and the second silencing chamber is connected to the outside of the muffler body through the second exhaust port. One end of the second vent leads to the flow chamber, and the other end leads to the second silencing chamber. The silencing frequencies of the second silencing chamber are different from those of the first silencing chamber. A second valve body mechanism is also installed inside the muffler body. The second valve body mechanism includes a second valve body located inside the second silencing chamber. The second valve body has a second open state where the second vent is opened to connect the flow chamber and the second silencing chamber, and a second closed state where the second vent is closed to isolate the flow chamber from the second silencing chamber.

[0010] In some embodiments, a second receiving groove is constructed on the side wall of the second exhaust passage. The second receiving groove is separated from the second silencing chamber by a second partition wall. The second valve body mechanism further includes a second activator and a second connector. The second activator is disposed in the second receiving groove and can slide along the second receiving groove. One end of the second connector is connected to the second activator, and the other end of the second connector passes through the second partition wall and is connected to the second valve body. As the second activator slides along the second receiving groove, it drives the second valve body to switch between the second open state and the second closed state.

[0011] In some embodiments, when the first valve body mechanism includes a first activator, the first activator has a first flow surface facing the first exhaust passage, and the second activator has a second flow surface facing the second exhaust passage, wherein the area of ​​the first flow surface is different from the area of ​​the second flow surface.

[0012] In some embodiments, the muffler body is assembled on a target component, the target component having an exhaust port whose position corresponds to the position of the flow chamber; the second receiving groove having a third opening facing the second exhaust passage and a fourth opening facing the target component; the second activator closing the third opening; and the target component closing the fourth opening; and / or, the second activator comprising a second plate and two second side plates respectively connected to both sides of the second plate, the two second side plates respectively contacting two groove walls of the second receiving groove, and the two second side plates being located on the side of the second plate facing away from the second exhaust passage.

[0013] In some embodiments, a second rotating shaft is provided in the second silencing chamber, the second valve body is mounted on the second rotating shaft, and the second valve body can rotate about the second rotating shaft. A second flow-through hole is constructed on the second valve body, the second flow-through hole penetrates the second valve body, and the other end of the second connector penetrates the second partition wall and is hinged to the second activator. When the second flow-through hole is connected to the second vent hole, the second valve body is in the second open state; when the second flow-through hole is not connected to the second vent hole, the second valve body is in the second closed state.

[0014] In some embodiments, the second valve body is a cylindrical structure, and a second common wall is formed between the flow chamber and the second silencer chamber. A second arc surface is formed on the second common wall that contacts the second valve body. The second arc surface is adapted to the second valve body, and the second vent hole penetrates the second common wall from the second arc surface.

[0015] The present invention also provides a compressor including the aforementioned muffler.

[0016] The present invention also provides an air conditioner, including the aforementioned compressor.

[0017] The present invention provides a silencer, compressor, and air conditioner, which have the following beneficial effects:

[0018] When the muffler of this application is installed at the exhaust port of the compressor's pump body, the gaseous refrigerant discharged from the pump body first enters the flow chamber of the muffler body, and then exits through the first exhaust channel to the outside of the muffler. During this process, the muffler reduces low-frequency aerodynamic noise. When the pump body experiences excessive exhaust pulsation, the first valve body switches to the first open state, and the flow chamber connects with the first muffler chamber through the first vent. The gaseous refrigerant in the flow chamber then enters the first muffler chamber through the first vent, and then exits through the first exhaust port to the outside of the muffler. Because the first muffler chamber diverts the gaseous refrigerant flowing through the flow chamber when the exhaust pulsation is large, gaseous refrigerants with different flow rates are automatically matched with the corresponding flow paths and chambers, thus optimizing the exhaust pulsation problem. Meanwhile, the flow of some gaseous refrigerant through the first silencing chamber also reduces aerodynamic noise in the high-frequency band. In other words, this application also achieves noise reduction in multiple frequency bands by adaptively adjusting the flow path and chamber corresponding to different flow rates of gaseous refrigerant, thereby achieving a better silencing effect. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 This is a top view of the first valve body of the muffler's first valve body mechanism in a first closed state and the second valve body mechanism in a second closed state, according to an embodiment of the present invention.

[0021] Figure 2 This is a top view of the muffler in an embodiment of the present invention when the first valve body of the first valve body mechanism is in a first open state and the second valve body mechanism of the second valve body mechanism is in a second closed state.

[0022] Figure 3 This is a top view of the first valve body of the first valve body mechanism of the muffler in the first open state and the second valve body mechanism in the second open state, according to an embodiment of the present invention.

[0023] Figure 4 This is an exploded schematic diagram of the silencer according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the muffler according to an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the first valve body of the muffler's first valve body mechanism in a first closed state and the second valve body mechanism in a second closed state, according to an embodiment of the present invention.

[0026] Figure 7 This is a cross-sectional view of the first valve body of the first valve body mechanism of the muffler in the first open state and the second valve body mechanism of the second valve body mechanism in the second closed state, according to an embodiment of the present invention.

[0027] Figure 8 The first valve body of the first valve body mechanism of the muffler in the first open state and the second valve body mechanism in the second open state are cross-sectional views of an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of the second valve body mechanism of the muffler in an embodiment of the present invention when the second valve body is in the second closed state.

[0029] Figure 10 This is a schematic diagram of the structure of the second valve body mechanism of the muffler in the second open state according to an embodiment of the present invention.

[0030] Figure 11 This is a front view of the muffler according to an embodiment of the present invention.

[0031] The reference numerals in the attached figures are as follows:

[0032] 1. Muffler body; 2. First valve body mechanism; 21. First valve body; 22. First activator; 23. First connecting rod; 24. Second connecting rod; 3. Flow chamber; 4. First exhaust passage; 5. First muffler chamber; 6. First exhaust port; 7. First vent hole; 8. First receiving groove; 9. First rotating shaft; 10. First flow hole; 11. Second exhaust passage; 12. Second muffler chamber; 13. Second exhaust port; 14. Second vent hole; 15. Second valve body mechanism; 151. Second valve body; 152. Second activator; 153. Third connecting rod; 154. Fourth connecting rod; 16. Second receiving groove; 17. Second rotating shaft; 18. Second flow hole. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] See also Figures 1 to 11As shown, according to an embodiment of the present invention, a muffler is provided, including a muffler body 1 and a first valve body mechanism 2. The muffler body 1 has a flow chamber 3, a first exhaust channel 4, a first silencing chamber 5, a first exhaust port 6, and a first vent 7. The flow chamber 3 communicates with the outside of the muffler body 1 through the first exhaust channel 4, and the first silencing chamber 5 communicates with the outside of the muffler body 1 through the first exhaust port 6. One end of the first vent 7 leads to the flow chamber 3, and the other end leads to the first silencing chamber 5. The first valve body mechanism 2 is installed inside the muffler body 1 and includes a first valve body 21. The first valve body 21 is located inside the first silencing chamber 5. The first valve body 21 has a first open state where the first vent 7 is opened to communicate between the flow chamber 3 and the first silencing chamber 5, and a first closed state where the first vent 7 is closed to isolate the flow chamber 3 from the first silencing chamber 5. Specifically, when the flow velocity of the fluid flowing in the first exhaust channel 4 is greater than or equal to the first set flow velocity, the first valve body 21 is in the first open state, and when the flow velocity of the fluid flowing in the first exhaust channel 4 is less than the first set flow velocity, the first valve body 21 is in the first closed state.

[0038] In this technical solution, when the muffler of this application is installed at the exhaust port of the compressor pump body, the gaseous refrigerant discharged from the pump body will first enter the flow chamber 3 of the muffler body 1, and then be discharged outside the muffler through the first exhaust channel 4. During this process, the muffler will reduce low-frequency aerodynamic noise. When the pump body experiences excessive exhaust pulsation, the flow velocity of the gaseous refrigerant flowing through the first exhaust channel 4 will increase significantly, making the refrigerant flow velocity greater than or equal to the first set flow velocity. Then, the first valve body 21 will switch to the first open state, and the flow chamber 3 will be connected to the first muffler chamber 5 through the first vent 7. The gaseous refrigerant in the flow chamber 3 will then enter the first muffler chamber 5 through the first vent 7, and then be discharged outside the muffler through the first exhaust port 6. Because the first silencing chamber 5 diverts the gaseous refrigerant flowing through the flow chamber 3 when the exhaust pulsation is large, the gaseous refrigerant with different flow rates is automatically matched with the corresponding flow path and chamber, thus optimizing the exhaust pulsation problem. At the same time, the flow of some gaseous refrigerant through the first silencing chamber 5 also reduces aerodynamic noise in the high-frequency range. That is, this application also achieves noise reduction in multiple frequency bands by adaptively adjusting the flow path and chamber corresponding to gaseous refrigerant with different flow rates, thereby achieving a better silencing effect.

[0039] See also Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, a first receiving groove 8 is constructed on the side wall of the first exhaust channel 4. The first receiving groove 8 is separated from the first silencing chamber 5 by a first partition wall. The first valve body mechanism 2 also includes a first activator 22 and a first connector. The first activator 22 is disposed in the first receiving groove 8 and can slide along the first receiving groove 8. One end of the first connector is connected to the first activator 22, and the other end of the first connector passes through the first partition wall and is connected to the first valve body 21. During the sliding process along the first receiving groove 8, the first activator 22 drives the first valve body 21 to switch between a first open state and a first closed state. Specifically, when the flow velocity of the fluid flowing in the first exhaust channel 4 is greater than or equal to a first set flow velocity, the first activator 22 slides along the first receiving groove 8 toward the side where the first exhaust channel 4 is located to drive the first valve body 21 to switch to a first open state; when the flow velocity of the fluid flowing in the first exhaust channel 4 is less than the first set flow velocity, the first activator 22 slides along the first receiving groove 8 toward the side where the first silencing chamber 5 is located to drive the first valve body 21 to switch to a first closed state. The first connecting member can be a first linkage assembly.

[0040] In this embodiment, the first activator 22 has a first side facing the first exhaust channel 4 and a second side facing the first receiving groove 8. When the exhaust pulsation is large, causing the flow velocity of the gaseous refrigerant flowing through the first exhaust channel 4 to be greater than or equal to a first set flow velocity, the airflow velocity flowing through the first side of the first activator 22 is large, while the airflow velocity on the second side of the first activator 22 is almost zero, that is, the airflow velocity difference between the two sides of the first activator 22 is large. According to Bernoulli's principle, the large airflow velocity difference results in a large pressure difference between the two sides of the first activator 22, and the pressure difference causes the first activator 22 to be subjected to pressure in the direction of the first exhaust channel 4. This pressure is greater than the friction force on the first activator 22, pushing the first activator 22 to slide along the first receiving groove 8 towards the direction of the first exhaust channel 4. During the sliding process, the first activator 22 will pull the first valve body 21 to move forward through the first linkage assembly, thereby realizing the switching of the first valve body 21 to the first open state. After the first activator 22 slides along the first receiving groove 8 toward the side where the first exhaust channel 4 is located, the air volume in the first receiving groove 8 expands, the gas is diluted, the pressure decreases, and a negative pressure is formed. When the exhaust pulsation is small, causing the flow rate of the gaseous refrigerant flowing through the first exhaust channel 4 to be less than the first set flow rate, the first activator 22 will be drawn back under the action of the pressure difference. That is, the first activator 22 will slide along the first receiving groove 8 toward the side where the first silencing chamber 5 is located. During the sliding process, the first activator 22 will push the first valve body 21 to move in the opposite direction through the first connecting rod assembly, thereby realizing the switching of the first valve body 21 to the first closed state.

[0041] It should be noted that because the exhaust of the compressor pump body has pulsation, as the exhaust volume increases, the intake volume of the muffler also increases, while the area of ​​the exhaust end of the first exhaust channel 4 remains unchanged, which leads to an increase in the gas flow velocity through the first exhaust channel 4.

[0042] In one specific implementation, the muffler body 1 is assembled on the target component, the target component has an exhaust port, the position of the exhaust port corresponds to the position of the flow chamber 3, the first receiving groove 8 has a first opening facing the first exhaust channel 4 and a second opening facing the target component, the first activator 22 closes the first opening, and the target component closes the second opening.

[0043] In this technical solution, the first opening of the first receiving groove 8 is sealed by the first activating element 22 and the second opening of the first receiving groove 8 is sealed by the target component, making the first receiving groove 8 a sealed cavity. Therefore, during the back-and-forth sliding of the first activating element 22 along the first receiving groove 8, the first receiving groove 8 will never connect with the first exhaust channel 4 to form cross-flow, thus ensuring that a predetermined airflow velocity difference exists on both sides of the first activating element 22 to achieve its movement. The target component can be the stationary scroll plate of a scroll compressor pump body or the upper flange of a roller compressor pump body; both the stationary scroll plate and the upper flange have exhaust ports.

[0044] See also Figures 6 to 10 As shown, a first rotating shaft 9 is provided inside the first silencing chamber 5. A first valve body 21 is mounted on the first rotating shaft 9 and can rotate around the first rotating shaft 9. A first flow-through hole 10 is constructed on the first valve body 21, which penetrates the first valve body 21. The other end of the first connecting member penetrates the first partition wall and is hinged to the first valve body 21. Specifically, when the first activating member 22 pulls the first valve body 21 to rotate through the first connecting rod assembly so that the first flow-through hole 10 communicates with the first vent hole 7, the first valve body 21 is in a first open state; when the first activating member 22 pushes the first valve body 21 to rotate through the first connecting rod assembly so that the first flow-through hole 10 is not connected with the first vent hole 7, the first valve body 21 is in a first closed state.

[0045] In this embodiment, since the first valve body 21 is rotatably mounted on the first rotating shaft 9, when the first activating member 22 pulls the first valve body 21 through the first connecting rod assembly, the first valve body 21 will rotate around the first rotating shaft 9. During the rotation of the first valve body 21, if the first flow-through hole 10 is connected to the first vent hole 7, the first valve body 21 can be in a first open state, and the flow-through chamber 3 is connected to the first silencer chamber 5; if the first flow-through hole 10 is not connected to the first vent hole 7, the first valve body 21 can be in a first closed state, and the flow-through chamber 3 is not connected to the first silencer chamber 5. The first flow-through hole 10 penetrates the first valve body 21 radially. It can be understood that the first valve body 21 can also be similar to an exhaust valve plate, which initially blocks the first vent hole 7. When the first activator 22 pulls the exhaust valve plate to deform via the first linkage assembly, the exhaust valve plate opens the first vent 7, connecting the flow chamber 3 and the first silencer chamber 5. When the first activator 22 pushes the exhaust valve plate back to its initial state via the first linkage assembly, the exhaust valve plate closes the first vent 7, disconnecting the flow chamber 3 and the first silencer chamber 5. This push-pull method can also achieve the opening and closing of the first valve body 21. However, it should be noted that when using this push-pull method, the airflow entering the first silencer chamber 5 through the first vent 7 will impact the exhaust valve plate, causing the impact force on the exhaust valve plate to be transmitted to the first activator 22. The two forces affect each other, and the entire first valve body mechanism 2 cannot be precisely controlled by the first activator 22. At the same time, the exhaust valve plate is prone to deformation under push-pull and airflow impact. The first valve body 21 can effectively avoid these two problems by using a rotation method to open and close the first vent 7. Therefore, although the push-pull method is also a feasible solution, this application recommends using the rotation method.

[0046] See also Figures 1 to 3 , Figure 6 and Figure 8 As shown, the first valve body 21 has a cylindrical structure. A first common wall is formed between the flow chamber 3 and the first silencing chamber 5. A first arc surface is formed on the first common wall that contacts the first valve body 21. The first arc surface is adapted to the first valve body 21. The first vent 7 penetrates the first common wall from the first arc surface. The adaptation of the first arc surface to the first valve body 21 means that the radius of curvature of the first arc surface is the same as the radius of the first valve body 21.

[0047] In this technical solution, when the first valve body 21 is a cylindrical structure and a first arc surface that contacts the first valve body 21 is formed on the first common wall, it can be ensured that the first valve body 21 always has a tight contact with the first common wall during rotation, thereby realizing the accurate opening and closing of the first vent hole 7 by the first valve body 21.

[0048] See also Figures 1 to 5 As shown, the first linkage assembly includes a first link 23 and a second link 24. One end of the first link 23 is connected to the first activator 22, and the other end of the first link 23 passes through the first partition wall and is hinged to the second link 24. The end of the second link 24 away from the first link 23 is hinged to the first valve body 21. This design and connection method of the first linkage assembly can accurately convert the linear motion of the first activator 22 into the rotational motion of the first valve body 21.

[0049] In one specific implementation, the first activator 22 includes a first plate and two first side plates respectively connected to both sides of the first plate. The two first side plates are in contact with the two groove walls of the first receiving groove 8, and the two first side plates are located on the side of the first plate facing away from the first exhaust channel 4.

[0050] In this embodiment, when the first activating element 22 is composed of a first plate and two first side plates respectively connected to both sides of the first plate, it indicates that the first activating element 22 is a concave plate. Even if the first plate moves out of the first receiving groove 8 and enters the first exhaust channel 4, the two first side plates still have partial sections within the first receiving groove 8 and are in sealed contact with the two opposite groove walls of the first receiving groove 8, thereby ensuring the sealing of the first receiving groove 8. Moreover, the concave shape of the first activating element 22 can also reduce the weight of the first activating element 22, making it easier for the first activating element 22 to move under pressure difference.

[0051] See also Figures 1 to 3 , Figure 6 and Figure 8 As shown, the muffler body 1 also has a second exhaust channel 11, a second muffler chamber 12, a second exhaust port 13, and a second vent 14. The flow chamber 3 is also connected to the outside of the muffler body 1 through the second exhaust channel 11. The second muffler chamber 12 is connected to the outside of the muffler body 1 through the second exhaust port 13. One end of the second vent 14 leads to the flow chamber 3, and the other end of the second vent 14 leads to the second muffler chamber 12. The muffler frequencies of the second muffler chamber 12 are different from those of the first muffler chamber 5. The muffler body 1 also includes a second valve mechanism 15, which comprises a second valve body 151 located within the second silencing chamber 12. The second valve body 151 has a second open state where the second vent 14 is opened to connect the flow chamber 3 to the second silencing chamber 12, and a second closed state where the second vent 14 is closed to isolate the flow chamber 3 from the second silencing chamber 12. Specifically, when the flow velocity of the fluid flowing in the second exhaust passage 11 is greater than or equal to a second set flow velocity, the second valve body 151 is in the second open state; when the flow velocity of the fluid flowing in the second exhaust passage 11 is less than the second set flow velocity, the second valve body 151 is in the second closed state.

[0052] In this technical solution, when the pump body experiences excessive exhaust pulsation, causing the flow velocity of the gaseous refrigerant flowing through the second exhaust channel 11 to be greater than or equal to the second set flow velocity, the second valve body 151 will switch to the second open state, allowing the flow chamber 3 to connect with the second silencer chamber 12 through the second vent 14. The gaseous refrigerant in the flow chamber 3 will then enter the second silencer chamber 12 through the second vent 14, and then be discharged outside the silencer through the second exhaust port 13. Since the second silencer chamber 12 also diverts the gaseous refrigerant flowing through the flow chamber 3 when the exhaust pulsation is large, it further optimizes the exhaust pulsation problem by automatically matching the corresponding flow path and chamber for gaseous refrigerants with different flow velocities. Meanwhile, since the second silencing chamber 12 and the first silencing chamber 5 have different silencing frequencies, the second silencing chamber 12 and the first silencing chamber 5 can be designed to reduce noise in different specific frequency bands. In this way, while optimizing exhaust pulsation, noise reduction can also be achieved in multiple different specific frequency bands.

[0053] It should be noted that the second exhaust passage 11 and the first exhaust passage 4 are separated by a wall, and the second exhaust passage 11 and the first exhaust passage 4 exhaust independently without interfering with each other. However, the exhaust ends of the second exhaust passage 11 and the first exhaust passage 4 are combined to form the radial exhaust port of the muffler body 1, that is, both the second exhaust passage 11 and the first exhaust passage 4 exhaust through radial exhaust ports. Preferably, the second exhaust passage 11 and the first exhaust passage 4 are symmetrically distributed within the muffler body 1. It can be understood that because the exhaust of the compressor pump body has pulsations, as the exhaust volume increases, the intake volume of the muffler also increases, while the area of ​​the exhaust end of the second exhaust passage 11 remains unchanged, which leads to an increase in the gas flow velocity through the second exhaust passage 11.

[0054] It should also be noted that the silencing effect of the first silencing chamber 5 and the second silencing chamber 12 can be achieved by the first silencing chamber 5 having a first narrowing region and a first expansion region, and the second silencing chamber 12 having a second narrowing region and a second expansion region. During the flow of air through the first silencing chamber 5 and the second silencing chamber 12, silencing occurs through contraction and expansion. By making the volumes of the first expansion region of the first silencing chamber 5 and the second expansion region of the second silencing chamber 12 different, the silencing frequencies of the first silencing chamber 5 and the second silencing chamber 12 can be made different.

[0055] See also Figures 1 to 3 , Figure 6 and Figure 8As shown, a second receiving groove 16 is constructed on the side wall of the second exhaust channel 11. The second receiving groove 16 is separated from the second silencing chamber 12 by a second partition wall. The second valve body mechanism 15 also includes a second activator 152 and a second connector. The second activator 152 is disposed in the second receiving groove 16 and can slide along the second receiving groove 16. One end of the second connector is connected to the second activator 152, and the other end of the second connector passes through the second partition wall and is connected to the second valve body 151. During the sliding process along the second receiving groove 16, the second activator 152 drives the second valve body 151 to switch between a second open state and a second closed state. Specifically, when the flow velocity of the fluid flowing in the second exhaust channel 11 is greater than or equal to the second set flow velocity, the second activator 152 slides along the second receiving groove 16 toward the side where the second exhaust channel 11 is located, thereby causing the second valve body 151 to switch to the second open state; when the flow velocity of the fluid flowing in the second exhaust channel 11 is less than the second set flow velocity, the second activator 152 slides along the second receiving groove 16 toward the side where the second silencing chamber 12 is located, thereby causing the second valve body 151 to switch to the second closed state. The second connecting member can be a second linkage assembly.

[0056] In this embodiment, the second activator 152 has a first side facing the second exhaust channel 11 and a second side facing the second receiving groove 16. When the exhaust pulsation is large, causing the flow velocity of the gaseous refrigerant flowing through the second exhaust channel 11 to be greater than or equal to a second set flow velocity, the airflow velocity flowing through the first side of the second activator 152 is large, while the airflow velocity on the second side of the second activator 152 is almost zero, that is, the airflow velocity difference between the two sides of the second activator 152 is large. According to Bernoulli's principle, the large airflow velocity difference results in a large pressure difference between the two sides of the second activator 152, and the pressure difference causes the second activator 152 to be subjected to pressure in the direction pointing towards the side where the second exhaust channel 11 is located. This pressure is greater than the frictional force on the second activator 152, pushing the second activator 152 to slide along the second receiving groove 16 towards the side where the second exhaust channel 11 is located. During the sliding process, the second activator 152 will pull the second valve body 151 to move forward through the second linkage assembly, thereby realizing the switching of the second valve body 151 to the second open state. After the second activator 152 slides along the second receiving groove 16 toward the side where the second exhaust channel 11 is located, the air volume in the second exhaust channel 11 expands, the gas is diluted, the pressure decreases, and a negative pressure is formed. When the exhaust pulsation is small, causing the flow rate of the gaseous refrigerant flowing through the second exhaust channel 11 to be less than the second set flow rate, the second activator 152 will be drawn back under the action of the pressure difference. That is, the second activator 152 will slide along the second receiving groove 16 toward the side where the first silencing chamber 5 is located. During the sliding process, the second activator 152 will push the second valve body 151 to move in the opposite direction through the second connecting rod assembly, thereby realizing the switching of the second valve body 151 to the first closed state.

[0057] In one specific implementation, the dimensions of the first activator 22 are different from those of the second activator 152. Specifically, the first activator 22 has a first flow surface facing the first exhaust passage 4, and the second activator 152 has a second flow surface facing the second exhaust passage 11. The areas of the first flow surface and the second flow surface are different.

[0058] In this embodiment, when the size of the first activator 22 is different from that of the second activator 152, airflow at different velocities is required for the two activators to slide along the two receiving grooves, thereby connecting the first silencing chamber 5 and the second silencing chamber 12 to the flow chamber 3. This allows the first activator 22 and the second activator 152 to slide at different times during exhaust pulsation, causing the first valve body 21 to open the first vent 7 and the second valve body 151 to open the second vent 14. This achieves different flow splitting conditions for different exhaust pulsation conditions, thus enabling adaptive optimization of exhaust pulsation. Simultaneously, it also achieves adaptive adjustment of different flow velocities to different silencing chambers, resulting in better silencing effect and more targeted silencing bands. Specifically, the size of the first activator 22 can be larger than that of the second activator 152. When the flow velocity of the gaseous refrigerant in the first exhaust channel 4 and the second exhaust channel 11 increases, the first activator 22 slides first, causing the first valve body 21 to open the first vent 7. As the flow velocity of the gaseous refrigerant in the first exhaust channel 4 and the second exhaust channel 11 further increases, the second activator 152 slides again, causing the second valve body 151 to open the second vent 14. The reason why the first activator 22 moves first and the second activator 152 moves later is that the pressure on the activator is equal to the pressure difference multiplied by the flow surface. Therefore, the larger first activator 22 experiences greater pressure under the same flow velocity, and this pressure has a greater tendency to increase than the friction caused by the larger size. Therefore, the first activator 22 moves first.

[0059] More specifically, the muffler body 1 is assembled on the target component, the second receiving groove 16 has a third opening toward the second exhaust passage 11 and a fourth opening toward the target component, the second activator 152 closes the third opening, and the target component closes the fourth opening.

[0060] In this technical solution, the second activating element 152 closes the third opening of the second receiving groove 16, and the target component closes the fourth opening of the second receiving groove 16, making the second receiving groove 16 a sealed cavity. Therefore, during the back-and-forth sliding of the second activating element 152 along the second receiving groove 16, the second receiving groove 16 will never connect with the second exhaust channel 11 to form a cross-flow, thus ensuring that a predetermined airflow velocity difference exists on both sides of the second activating element 152 to achieve the movement of the second activating element 152. The target component can be the stationary scroll plate of the pump body of a scroll compressor or the upper flange of the pump body of a roller compressor.

[0061] See Figures 6 to 10As shown, a second rotating shaft 17 is provided inside the second silencing chamber 12. A second valve body 151 is mounted on the second rotating shaft 17 and can rotate around the second rotating shaft 17. A second flow-through hole 18 is constructed on the second valve body 151, which penetrates the second valve body 151. The other end of the second connector penetrates the second partition wall and is hinged to the second activator 152. Specifically, when the second activator 152 pulls the second valve body 151 to rotate through the second linkage assembly so that the second flow-through hole 18 communicates with the second vent hole 14, the second valve body 151 is in a second open state; when the second activator 152 pushes the second valve body 151 to rotate through the second linkage assembly so that the second flow-through hole 18 is not connected with the second vent hole 14, the second valve body 151 is in a second closed state.

[0062] In this embodiment, since the second valve body 151 is rotatably mounted on the second rotating shaft 17, when the second activator 152 pulls the second valve body 151 through the second connecting rod assembly, the second valve body 151 will rotate around the second rotating shaft 17. During the rotation of the second valve body 151, if the second flow-through hole 18 is connected to the second vent hole 14, the second valve body 151 can be in a second open state, and the flow-through chamber 3 is connected to the second silencer chamber 12; if the second flow-through hole 18 is not connected to the second vent hole 14, the second valve body 151 can be in a second closed state, and the flow-through chamber 3 is not connected to the second silencer chamber 12. The second flow-through hole 18 penetrates the second valve body 151 radially. It can be understood that the second valve body 151 can also be similar to an exhaust valve plate, which initially blocks the second vent hole 14. When the second activator 152 pulls the exhaust valve plate to deform via the second linkage assembly, the exhaust valve plate opens the second vent 14, connecting the flow chamber 3 and the second silencing chamber 12. When the second activator 152 pushes the exhaust valve plate back to its initial state via the second linkage assembly, the exhaust valve plate closes the second vent 14, disconnecting the flow chamber 3 and the second silencing chamber 12. This push-pull method can also be used to open and close the second valve body 151. However, it should be noted that when using this push-pull method, the airflow entering the second silencing chamber 12 through the second vent 14 will impact the exhaust valve plate, causing the impact force on the exhaust valve plate to be transmitted to the second activator 152. The two forces affect each other, and the entire second valve body mechanism 15 cannot be precisely controlled by the second activator 152. At the same time, the exhaust valve plate is prone to deformation under push-pull and airflow impact. The second valve body 151 can effectively avoid these two problems by opening and closing the second vent 14 by rotation. Therefore, although the push-pull method is also a feasible solution, this application recommends the rotation method.

[0063] See also Figures 1 to 3 , Figures 6 to 8 As shown, the second valve body 151 has a cylindrical structure. A second common wall is formed between the flow chamber 3 and the second silencing chamber 12. A second arc surface is formed on the second common wall that contacts the second valve body 151. The second arc surface is adapted to the second valve body 151, and the second vent 14 penetrates the second common wall from the second arc surface. The adaptation of the second arc surface to the second valve body 151 means that the radius of curvature of the second arc surface is the same as the radius of curvature of the second valve body 151.

[0064] In this technical solution, when the second valve body 151 is a cylindrical structure and a second arc surface is formed on the second common wall to contact the second valve body 151, it can be ensured that the second valve body 151 always maintains a tight seal with the second common wall during rotation, thereby achieving accurate opening and closing of the second vent hole 14 by the second valve body 151. The second common wall and the first common wall together form an annular wall, which, together with the top wall of the muffler body 1, forms a flow chamber 3. The flow chamber 3 is located in the central region of the muffler body 1, and the central region of the muffler body 1 protrudes upward to increase the volume of the flow chamber 3. The first silencing chamber 5 and the second silencing chamber 12 are both located radially outside the flow chamber 3, and their tails are connected. The first exhaust port 6 is located near the tail of the first silencing chamber 5, and the second exhaust port 13 is located near the tail of the second silencing chamber 12. Both the first exhaust port 6 and the second exhaust port 13 extend along the axial direction of the muffler body 1.

[0065] See also Figures 1 to 3 , Figure 9 and Figure 10 As shown, the second linkage assembly includes a third linkage 153 and a fourth linkage 154. One end of the third linkage 153 is connected to the second activator 152, and the other end of the third linkage 153 passes through the second partition wall and is hinged to the fourth linkage 154. The end of the fourth linkage 154 away from the third linkage 153 is hinged to the second valve body 151. This design and connection method of the second linkage assembly can accurately convert the linear motion of the second activator 152 into the rotational motion of the second valve body 151.

[0066] In one specific implementation, the second activator 152 includes a second plate and two second side plates respectively connected to both sides of the second plate. The two second side plates are in contact with the two groove walls of the second receiving groove 16, and the two second side plates are located on the side of the second plate facing away from the second exhaust channel 11.

[0067] In this embodiment, when the second activator 152 is composed of a second plate and two second side plates respectively connected to both sides of the second plate, it indicates that the second activator 152 is a concave plate. Even if the second plate moves out of the second receiving groove 16 and into the second exhaust channel 11, the two second side plates still have partial sections within the second receiving groove 16 and are in sealed contact with the two opposing groove walls of the second receiving groove 16, thereby ensuring the sealing of the second receiving groove 16. Moreover, the concave shape of the second activator 152 can also reduce the weight of the second activator 152, making it easier for the second activator 152 to move under pressure differential.

[0068] The present invention also provides a compressor including the aforementioned muffler.

[0069] The present invention also provides an air conditioner, including the aforementioned compressor.

[0070] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. 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 the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A muffler characterized by comprising: The muffler body (1) has a flow-through chamber (3), a first exhaust passage (4), a first muffling chamber (5), a first exhaust hole (6) and a first vent hole (7), the flow-through chamber (3) is communicated with the outside of the muffler body (1) through the first exhaust passage (4), the first muffling chamber (5) is communicated with the outside of the muffler body (1) through the first exhaust hole (6), one end of the first vent hole (7) leads to the flow-through chamber (3), and the other end of the first vent hole (7) leads to the first muffling chamber (5); The first valve body mechanism (2) is installed in the muffler body (1), the first valve body mechanism (2) comprises a first valve body (21), the first valve body (21) is in the first muffling chamber (5), the first valve body (21) has a first open state of opening the first vent hole (7) to make the flow-through chamber (3) communicated with the first muffling chamber (5), and the first valve body (21) also has a first closed state of closing the first vent hole (7) to make the flow-through chamber (3) cut off from the first muffling chamber (5); A first containing groove (8) is formed on the passage side wall of the first exhaust passage (4), the first containing groove (8) is separated from the first muffling chamber (5) by a first separation wall body, the first valve body mechanism (2) further comprises a first activating piece (22) and a first connecting piece, the first activating piece (22) is arranged in the first containing groove (8), the first activating piece (22) can slide along the first containing groove (8), one end of the first connecting piece is connected with the first activating piece (22), the other end of the first connecting piece is connected with the first valve body (21) after penetrating through the first separation wall body, and the first activating piece (22) drives the first valve body (21) to switch between the first open state and the first closed state in the process of sliding along the first containing groove (8).

2. The muffler of claim 1, wherein The muffler body (1) is assembled on a target component, the target component has an exhaust port, the position of the exhaust port corresponds to the position of the flow-through chamber (3), the first containing groove (8) has a first opening towards the first exhaust passage (4) and a second opening towards the target component, the first activating piece (22) closes the first opening, and the target component closes the second opening; and / or the first activating piece (22) comprises a first plate body and two first side plates connected on two sides of the first plate body respectively, two first side plates are in contact with two groove walls of the first containing groove (8) respectively, and two first side plates are on the side of the first plate body away from the first exhaust passage (4).

3. The muffler of claim 1, wherein The first silencing chamber (5) is provided with a first rotating shaft (9), the first valve body (21) is installed on the first rotating shaft (9) and can rotate around the first rotating shaft (9), the first valve body (21) is provided with a first flow hole (10) penetrating the first valve body (21), and the other end of the first connecting piece is hinged to the first valve body (21) after penetrating the first partition wall body. When the first flow hole (10) communicates with the first air hole (7), the first valve body (21) is in the first open state; when the first flow hole (10) does not communicate with the first air hole (7), the first valve body (21) is in the first closed state.

4. The muffler of claim 3, wherein The first valve body (21) is in a cylindrical structure, a first shared wall body is formed between the flow chamber (3) and the first silencing chamber (5), the first shared wall body is provided with a first arc surface in contact with the first valve body (21), the first arc surface is matched with the first valve body (21), and the first air hole (7) penetrates the first shared wall body from the first arc surface.

5. The muffler according to any one of claims 1 to 4, characterized in that The muffler body (1) further has a second exhaust passage (11), a second silencing chamber (12), a second exhaust hole (13) and a second air hole (14), the flow chamber (3) further communicates with the outside of the muffler body (1) through the second exhaust passage (11), the second silencing chamber (12) communicates with the outside of the muffler body (1) through the second exhaust hole (13), one end of the second air hole (14) leads to the flow chamber (3), the other end of the second air hole (14) leads to the second silencing chamber (12), and the second silencing chamber (12) has a different silencing frequency from the first silencing chamber (5). The muffler body (1) is further provided with a second valve body mechanism (15), the second valve body mechanism (15) comprises a second valve body (151), the second valve body (151) is located in the second silencing chamber (12), the second valve body (151) has a second open state of opening the second air hole (14) to make the flow chamber (3) communicate with the second silencing chamber (12), and the second valve body (151) also has a second closed state of closing the second air hole (14) to make the flow chamber (3) cut off from the second silencing chamber (12).

6. The muffler of claim 5, wherein The second exhaust passage (11) is provided with a second accommodating groove (16) on the passage side wall, the second accommodating groove (16) is separated from the second sound damping chamber (12) by a second partition wall, the second valve body mechanism (15) further comprises a second activating member (152) and a second connecting member, the second activating member (152) is arranged in the second accommodating groove (16) and can slide along the second accommodating groove (16), one end of the second connecting member is connected with the second activating member (152), the other end of the second connecting member penetrates through the second partition wall and is connected with the second valve body (151), the second activating member (152) drives the second valve body (151) to switch between the second open state and the second closed state during sliding along the second accommodating groove (16).

7. The muffler of claim 6, wherein When the first valve body mechanism (2) comprises a first activating member (22), the first activating member (22) has a first flow surface facing the first exhaust passage (4), the second activating member (152) has a second flow surface facing the second exhaust passage (11), the area of the first flow surface is different from the area of the second flow surface.

8. The muffler of claim 6, wherein The sound damper body (1) is assembled on a target component, the target component has an exhaust port, the position of the exhaust port corresponds to the position of the flow passage chamber (3), the second accommodating groove (16) has a third opening facing the second exhaust passage (11) and a fourth opening facing the target component, the second activating member (152) closes the third opening, and the target component closes the fourth opening; and / or, the second activating member (152) comprises a second plate body and two second side plates connected on both sides of the second plate body respectively, the two second side plates are in contact with two groove walls of the second accommodating groove (16) respectively, and the two second side plates are on the side of the second plate body away from the second exhaust passage (11).

9. The muffler of claim 6 wherein, The second sound damping chamber (12) is provided with a second rotating shaft (17), the second valve body (151) is installed on the second rotating shaft (17) and can rotate around the second rotating shaft (17), the second valve body (151) is provided with a second flow hole (18) penetrating through the second valve body (151), and the other end of the second connecting member is hinged with the second activating member (152) after penetrating through the second partition wall; When the second flow hole (18) communicates with the second air hole (14), the second valve body (151) is in the second open state; when the second flow hole (18) does not communicate with the second air hole (14), the second valve body (151) is in the second closed state.

10. The muffler of claim 9, wherein The second valve body (151) is a cylindrical structure, a second shared wall body is formed between the flow cavity (3) and the second sound attenuation cavity (12), a second arc surface in contact with the second valve body (151) is formed on the second shared wall body, the second arc surface is matched with the second valve body (151), and the second vent hole (14) penetrates the second shared wall body from the second arc surface.

11. A compressor characterized by, The muffler comprises the muffler according to any one of claims 1 to 10.

12. An air conditioner characterized by comprising: The compressor comprises the compressor according to claim 11.

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