Silencing structure, compressor applying same and air conditioner

Abstract

The invention discloses a silencing structure, a compressor applying the silencing structure and an air conditioner. The silencing structure is fixed to a flange of the compressor. The silencing structure comprises an outer cover and a partition plate, the partition plate is located in the outer cover, and a silencing cavity is formed among the lower end face of the partition plate, the flange and the side face of the outer cover; the side face of the outer cover is provided with a first outlet, the end face of the partition plate is provided with a second outlet, and the first outlet and the second outlet are matched to form an exhaust port. The silencing structure further comprises an adjusting assembly, the adjusting assembly acts on the outer cover and the partition plate at the same time, and the partition plate can move up and down in the outer cover so that the volume of the silencing cavity and the area of the exhaust port can be adjusted. The silencing structure provided by the invention replaces a traditional expansion chamber type silencer and has self-adaptive capacity, the volume of the silencing cavity and the area of the exhaust port can be automatically adjusted when the compressor runs, the volume of the silencing cavity is increased and the area of the exhaust port is reduced along with the increase of frequency, and the silencing effect of the compressor is improved. And the high-frequency aerodynamic noise of the compressor is greatly improved under the condition that the low-frequency performance is not influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors and relates to a muffler structure, a compressor and an air conditioner using the same. Background Art

[0002] The compressor of the air conditioner often produces a lot of noise, which affects the user experience. The main source of the noise is aerodynamic noise. In order to reduce the aerodynamic noise of the compressor, the traditional method is to add an expansion chamber muffler near the exhaust port of the compression chamber.

[0003] However, the evaporator and condenser of the air conditioner are currently developing towards miniaturization, which leads to the continuous increase in the operating frequency of the variable frequency rotor compressor, the increasingly harsh working conditions, and the more prominent problem of compressor aerodynamic noise. The traditional expansion chamber muffler wants to significantly improve the silencing effect, mainly by increasing the volume of the muffler cavity and reducing the area of ​​the muffler exhaust port. In the compressor, the working conditions are heavy and the load is large when the high frequency is running, and the noise is prominent; the working conditions are light and the load is small when the low frequency is running, and the noise is also small. If the volume of the muffler is expanded blindly and the exhaust port area is reduced, the energy efficiency of the compressor will be reduced and the low-frequency operation capacity will be insufficient. Therefore, how to balance the low-frequency energy efficiency and high-frequency noise of the compressor has become a problem that practitioners in this field need to solve urgently. Summary of the invention

[0004] In view of this, the present invention provides a silencer structure, a compressor and an air conditioner using the same, which can significantly improve the high-frequency aerodynamic noise of the compressor without affecting the low-frequency performance, thereby solving the technical problem that the traditional silencer structure cannot balance the low-frequency energy efficiency and high-frequency noise of the compressor.

[0005] In order to solve the above problems, according to one aspect of the present application, an embodiment of the present invention provides a muffler structure, which is fixed on the flange of the compressor; the muffler structure includes an outer cover and a partition, the partition is located in the outer cover, and a muffler cavity is formed between the lower end surface of the partition, the flange and the side surface of the outer cover; the side surface of the outer cover has a first outlet, and the end surface of the partition has a second outlet, and the first outlet and the second outlet cooperate to form an exhaust port;

[0006] The muffler structure also includes an adjustment component, which connects the outer cover and the partition, and acts on the outer cover and the partition at the same time, and can make the partition move up and down in the outer cover to adjust the volume of the muffler chamber and the area of ​​the exhaust port.

[0007] In some embodiments, the adjustment assembly includes a first elastic member and a second elastic member, one end of the first elastic member abuts against the upper end surface of the partition, the other end of the first elastic member abuts against the inside of the top surface of the outer cover, and the second elastic member abuts against the outside of the top surface of the outer cover; the pressure difference change between the inside and outside of the silencer chamber can cause the partition to move up and down, and under the action of the first elastic member and the second elastic member, the volume of the silencer chamber divided by the partition and the area of ​​the exhaust port can correspond to the pressure difference change.

[0008] In some embodiments, the adjustment assembly also includes a positioning column, which is fixed to the upper end surface of the partition and has a top that passes through the top surface of the outer cover; the first elastic member is located on the positioning column and connected between the upper end surface of the partition and the top surface of the outer cover, and the second elastic member is located on the top of the positioning column extending out of the outer cover.

[0009] In some embodiments, both the first elastic member and the second elastic member are springs, which are sleeved at corresponding positions of the positioning column; and the top end of the positioning column has a limiting member, and when the positioning column passes through the top surface of the outer cover and the second elastic member is sleeved on the protruding part, the limiting member is connected to the top end of the positioning column.

[0010] In some embodiments, the top of the positioning column has a thread, the limiting member is a nut, and the nut cooperates with the thread to limit the second elastic member.

[0011] In some embodiments, the first elastic member, the second elastic member and the positioning column are each provided in plurality, and the three are provided in a one-to-one correspondence;

[0012] And / or the positioning posts are evenly distributed along the circumferential direction on the upper end surface of the partition.

[0013] In some embodiments, the outer cover includes a top surface, the edge of the top surface extends downward to form a side surface, the side surface allows the outer cover to have a cavity inside, the partition is located in the cavity and can move up and down in the cavity; the first outlet is opened on the side surface.

[0014] In some embodiments, the edge of the partition extends downward to form a skirt, and the skirt cooperates with the side surface to limit the radial movement of the partition in the cavity.

[0015] In some embodiments, when the partition is in a lowermost position within the housing, the first outlet and the second outlet completely overlap.

[0016] According to another aspect of the present application, an embodiment of the present invention provides a compressor, which includes the above-mentioned silencer structure.

[0017] In some embodiments, the compressor also includes a motor assembly and a pump body assembly, and the silencer structure is located between the motor assembly and the pump body assembly, wherein a motor lower cavity is formed between the stator and rotor of the motor assembly and the pump body assembly, and an outer cavity is formed between the upper end surface of the partition, the shaft neck of the flange and the outer cover, and the motor lower cavity and the outer cavity are connected.

[0018] According to another aspect of the present application, an embodiment of the present invention provides an air conditioner, comprising the above-mentioned compressor.

[0019] Compared with the prior art, the noise reduction structure of the present invention has at least the following beneficial effects:

[0020] The silencer structure provided by the present invention is fixed on the flange of the compressor; the silencer structure includes an outer cover and a partition, the partition is located inside the outer cover, and a silencer cavity is formed between the lower end surface of the partition, the flange and the side surface of the outer cover; the side surface of the outer cover has a first outlet, the end surface of the partition has a second outlet, and the first outlet and the second outlet cooperate to form an exhaust port; the silencer structure also includes an adjustment component, the adjustment component connects the outer cover and the partition, and acts on the outer cover and the partition at the same time, and can make the partition move up and down in the outer cover to adjust the volume of the silencer cavity and the area of ​​the exhaust port.

[0021] When the compressor is not pneumatic or it is running in the low frequency range, the partition is in the lowest state in the outer cover. At this time, the volume of the silencer chamber is the smallest, and the first outlet and the second outlet completely overlap, and the area of ​​the exhaust port is the largest. At this time, the compressor has good performance, and because the operating frequency is low, the noise is also controlled under the joint action of the silencer chamber and the exhaust port. When the frequency of the compressor gradually increases, the pressure difference between the silencer chamber and the outer chamber becomes larger. At this time, the partition moves upward, and the volume of the silencer chamber increases. At the same time, because the movement of the partition drives the second outlet to move upward, the second outlet and the first outlet no longer completely overlap, and the exhaust port area decreases. The larger silencer chamber and the smaller exhaust port can just adapt to the compressor with a higher frequency. Therefore, the compressor running at a high frequency at this time also has a good ability to eliminate noise. In the process of the movement of the partition, the changes in the adjustment component can keep the partition balanced at the current position. That is to say, the silencer structure provided in this embodiment replaces the traditional expansion chamber silencer, which has adaptive capabilities and can automatically adjust the volume of the silencer chamber and the area of ​​the exhaust port when the compressor is running. As the frequency increases, the volume of the silencer chamber increases and the area of ​​the exhaust port decreases, thereby greatly improving the high-frequency aerodynamic noise of the compressor without affecting the low-frequency performance.

[0022] The compressor provided by the present invention is designed based on the above-mentioned silencer structure. Its beneficial effects refer to the beneficial effects of the above-mentioned silencer structure, which will not be described in detail here.

[0023] The air conditioner provided by the present invention is designed based on the above compressor. Its beneficial effects refer to the beneficial effects of the above compressor, which will not be described in detail here.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0026] Figure 1 is an exploded view of a sound-absorbing structure provided by an embodiment of the present invention;

[0027] Figure 2 is a schematic structural diagram of an outer cover in a sound-absorbing structure provided by an embodiment of the present invention;

[0028] Figure 3 is a schematic structural diagram of a partition in a sound-absorbing structure provided by an embodiment of the present invention;

[0029] Figure 4 is a schematic structural diagram of a position-limiting member in a sound-absorbing structure provided by an embodiment of the present invention;

[0030] Figure 5 is a schematic structural diagram of a second elastic member in a sound-absorbing structure provided by an embodiment of the present invention;

[0031] Figure 6 is a cross-sectional view of a sound-absorbing structure provided by an embodiment of the present invention in an initial state;

[0032] Figure 7 is a cross-sectional view of another state of a sound-absorbing structure provided by an embodiment of the present invention;

[0033] Figure 8 is a schematic diagram of force analysis of a partition in a sound-absorbing structure provided by an embodiment of the present invention;

[0034] Fig. 9 is a cross-sectional view of a compressor provided by an embodiment of the present invention;

[0035] Fig.10 It is a cross-sectional view of a pump body assembly in a compressor provided by an embodiment of the present invention.

[0036] in:

[0037] 1. Silencing structure; 11. Outer cover; 12. Partition; 13. Adjustment assembly; 14. Silencing chamber; 15. Outer chamber; 111. First outlet; 112. Top surface; 113. Side surface; 114. Screw hole; 115. Positioning hole; 121. Second outlet; 122. Skirt; 131. First elastic member; 132. Second elastic member; 133. Positioning column; 134. Limiting member; 1331. Thread; 2. Flange; 21. Flange exhaust port; 3. Motor assembly; 31. Stator; 32. Rotor; 4. Pump body assembly; 5. Motor lower chamber; 6. Shell assembly; 7. Lower cover; 8. Dispenser assembly. DETAILED DESCRIPTION

[0038] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0039] In the description of the present invention, it should be clarified that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, but are not necessarily used to describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, and do not mean that the referred device or element must have a specific direction or position, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Example 1

[0042] This embodiment provides a sound-absorbing structure, such as Figure 1-8As shown, the muffler structure is fixed on the flange 2 of the compressor; the muffler structure includes an outer cover 11 and a partition 12, the partition 12 is located in the outer cover 11, and a muffler cavity 14 is formed between the lower end surface of the partition 12, the flange 2 and the side surface of the outer cover 11; the side surface of the outer cover 11 has a first outlet 111, and the end surface of the partition 12 has a second outlet 121, and the first outlet 111 and the second outlet 121 cooperate to form an exhaust port;

[0043] The muffler structure also includes an adjustment component 13, which connects the outer cover and the partition, and acts on the outer cover 11 and the partition 12 at the same time, and can make the partition 12 move up and down in the outer cover 11 to adjust the volume of the muffler chamber 14 and the area of ​​the exhaust port.

[0044] Specifically, the outer cover 11 has a certain height, and its general outline is similar to a hollow columnar structure with an opening at the bottom, and the partition 12 is assembled inside the hollow columnar structure through the opening at the bottom. A screw hole 114 is opened at the edge of the outer cover 11, and one end of the screw passes through the screw hole 114 and is connected to the upper end surface of the flange 2 to achieve the fixation of the sound-absorbing structure.

[0045] The silencer structure is installed on the end face of the flange 2, and together with the end face of the flange 2 and the journal of the flange 2, a cavity is formed, and the cavity is divided into a silencer cavity 14 and an outer cavity 15 by the partition 12. More specifically, the silencer cavity 14 is formed between the lower end face of the partition 12, the flange 2 and the side of the outer cover 11, and the outer cavity 15 is formed between the upper end face of the partition 12, the journal of the flange 2 and the outer cover 11. Among them, the silencer cavity 14 is a high-pressure cavity, and the outer cavity 15 is a low-pressure cavity. In addition, the bottom of the flange 2 has a flange exhaust port 21, and the flange exhaust port 21 is connected to the silencer cavity 14.

[0046] When the pressure difference between the silencer chamber 14 and the outer chamber 15 changes, the original equilibrium state of the partition 12 is broken, and the partition 12 moves up and down in the outer cover 11. During the movement, the volume of the silencer chamber 14 and the area of ​​the exhaust port will change. At the same time, in this process, the adjustment component 13 acts on the outer cover 11 and the partition 12, so that the pressure difference between the silencer chamber 14 and the outer chamber 15 can be matched with the volume of the silencer chamber 14 and the area of ​​the exhaust port to keep the partition 12 stable.

[0047] In this way, after adopting the above structure, when the compressor is not pneumatic or it is operating in the low frequency range, the partition 12 is in the lowest state in the outer cover 11, and the volume of the silencer chamber 14 is the smallest. At the same time, the first outlet 111 and the second outlet 121 completely overlap, and the area of ​​the exhaust port is the largest. At this time, the compressor has good performance, and because the operating frequency is low, the noise is also controlled under the joint action of the silencer chamber 14 and the exhaust port.

[0048] When the frequency of the compressor gradually increases, the pressure difference between the silencer chamber 14 and the outer chamber 15 increases. At this time, the partition 12 moves upward, and the volume of the silencer chamber 14 increases. At the same time, the movement of the partition 12 drives the second outlet 121 to move upward, so the second outlet 121 and the first outlet 111 no longer completely overlap, and the exhaust port area decreases. The larger silencer chamber 14 and the smaller exhaust port can just adapt to the compressor with a higher frequency. Therefore, the high-frequency compressor also has a good ability to eliminate noise. In the process of the movement of the partition 12, the adjustment component 13 changes, and its change can keep the partition 12 balanced at the current position. In other words, the silencer structure provided in this embodiment replaces the traditional expansion chamber silencer, which has adaptive ability and can automatically adjust the volume of the silencer chamber and the area of ​​the exhaust port when the compressor is running. As the frequency increases, the volume of the silencer chamber increases and the area of ​​the exhaust port decreases, so that the compressor can greatly improve the high-frequency pneumatic noise without affecting the low-frequency performance.

[0049] In a specific embodiment, Figure 1 , Figure 6 and Figure 7 As shown, the adjustment component 13 includes a first elastic member 131 and a second elastic member 132, one end of the first elastic member 131 abuts against the upper end surface of the partition 12, the other end of the first elastic member 131 abuts against the inside of the top surface of the outer cover 11, and the second elastic member 132 abuts against the outside of the top surface of the outer cover 11; the pressure difference change between the inside and outside of the silencer chamber 14 can make the partition 12 move up and down, and under the action of the first elastic member 131 and the second elastic member 132, the volume of the silencer chamber 14 divided by the partition 12 and the area of ​​the exhaust port can correspond to the pressure difference change.

[0050] Specifically, in order to explain how the partition 12 maintains balance at different positions in the outer cover 11 under the action of the adjustment component 13, the force condition of the partition 12 is analyzed as follows:

[0051] like Figure 8 As shown, the partition 12 is subjected to the downward gravity G, the first elastic member 131 is compressed to generate a downward thrust F3 on the partition 12, and the second elastic member 132 is compressed to generate an upward pulling force F4 on the partition 12. When the compressor is running, the pressure difference between the muffler chamber 14 and the outer chamber 15 generates an upward thrust Fp on the partition 12. When the forces on the partition 12 are balanced, the relationship is as follows:

[0052] F3+G=F4+Fp

[0053] When the operating frequency of the compressor increases, the pressure difference between the silencer chamber 14 and the outer chamber 15 increases, Fp increases, and the upward force increases, and the partition 12 moves up; at the same time, the compression of the first elastic member 131 increases, F3 increases, and the compression of the second elastic member 132 decreases, F4 decreases. When the partition 12 rises to reach force balance again, it oscillates slightly at this position under the action of inertia, the elastic force of the first elastic member 131 and the second elastic member 132, and the gas force until the next frequency change.

[0054] In addition, in one of the embodiments, in order to ensure the balance of the partition 12 after movement, the adjustment component 13 may also include two groups of magnets, and balance is achieved through the adsorption force of the magnets; but compared to the magnets, the gas impact energy is converted into elastic potential energy and kinetic energy through the change of the compression state of the first elastic member 131 and the second elastic member 132, and the compressor pneumatic noise can be further reduced. Therefore, the first elastic member 131 and the second elastic member 132 are preferred.

[0055] In a specific embodiment, Figure 1 and Figure 3 As shown, the adjustment assembly 13 also includes a positioning column 133, which is fixed on the upper end surface of the partition 12, and its top passes through the top surface of the outer cover 11; the first elastic member 131 is located on the positioning column 133, and is connected between the upper end surface of the partition 12 and the top surface of the outer cover 11, and the second elastic member 132 is located on the top of the outer cover 11 where the positioning column 133 extends.

[0056] A columnar structure extends upward from the upper end surface of the partition 12, which is the above-mentioned positioning column 133. The positioning column 133 is mainly used to connect the partition 12 and the outer cover 11, and provide support for the first elastic member 131 and the second elastic member 132. Specifically, the top surface of the outer cover 11 has a positioning hole 115, and the top of the positioning column 133 passes through the positioning hole 115.

[0057] In a specific embodiment, the first elastic member 131 and the second elastic member 132 are both springs, which are sleeved at corresponding positions of the positioning column 133; and the top of the positioning column 133 has a limiting member 134. When the positioning column 133 passes through the top surface of the outer cover 11 and the second elastic member 132 is sleeved on the protruding part, the limiting member 134 is connected to the top of the positioning column 133.

[0058] For better explanation, it is assumed that the first elastic member 131 is a first spring and the second elastic member 132 is a second spring. In order to better connect and fix the partition 12 and the outer cover 11 together, the position of the positioning column 133 and the positioning hole 115 on the outer cover 11 need to be arranged correspondingly up and down.

[0059] In this way, after the top end of the positioning column 133 passes through the positioning hole 115, the first spring is sleeved on the positioning column 133 located between the partition 12 and the top surface of the outer cover 11, and the second spring is sleeved on the positioning column 133 located outside the top surface of the outer cover 11. At the same time, in order to prevent the second spring from detaching from the positioning column 133, when the second spring is sleeved on the positioning column 133, a limit piece 134 is set on the top of the positioning column 133.

[0060] Continuing with the above-mentioned force analysis on the partition 12, when the operating frequency of the compressor increases, the partition 12 will move up; at the same time, the space for accommodating the first spring becomes smaller, so the compression of the first spring increases, and F3 increases; and after the positioning column 133 moves up with the partition 12, the length of the part of the positioning column 133 used to sleeve the second spring becomes longer, and the distance between the top surface of the outer cover 11 and the limit member 134 becomes larger, and the second spring is just located at this position, so the compression of the second spring decreases, and F4 will decrease.

[0061] In a specific embodiment, Figure 3 As shown, the top of the positioning column 133 has a thread 1331, and the limiting member 134 is a nut, which cooperates with the thread 1331 to limit the second elastic member 132. The cooperation between the thread 1331 and the nut makes it easier and more convenient to limit the second spring.

[0062] In order to make the upward and downward movement of the partition plate more stable, in a specific embodiment, a plurality of the first elastic member 131 , the second elastic member 132 and the positioning column 133 are provided, and the three are arranged in a one-to-one correspondence.

[0063] In a specific embodiment, the positioning posts 133 are evenly distributed along the circumferential direction on the upper end surface of the partition 12. That is, a circle of positioning posts 133 is distributed on the upper end surface of the partition 12, and the angles between adjacent positioning posts 133 are the same. For example, five positioning posts 133 are provided in the figure, that is, along the upper end surface of the partition 12, a positioning post 133 is provided every 72° in the same radial dimension. Corresponding to the positioning posts 133, a circle of positioning holes 115 is provided on the top surface of the outer cover 11, and the angles between adjacent positioning holes 115 are also 72°. Each positioning post 133 corresponds to a first elastic member 131, a second elastic member 132 and a stopper 134.

[0064] In a specific embodiment, Figure 2 As shown, the outer cover 11 includes a top surface 112, the edge of the top surface 112 extends downward to form a side surface 113, and the side surface 113 allows the outer cover 11 to have a cavity inside, and the partition 12 is located in the cavity and can move up and down in the cavity; the first outlet 111 is opened on the side surface 113.

[0065] like Figure 3 As shown, the edge of the partition 12 extends downward to form a skirt 122, and the skirt 122 cooperates with the side 113 to limit the radial movement of the partition 12 in the cavity. In this way, when the operating frequency of the compressor increases, the pressure difference between the muffler cavity 14 and the outer cavity 15 increases, and when the partition 12 moves upward, the skirt 122 will block part of the first outlet 111, so that the area of ​​the exhaust port is reduced. In addition, the skirt 122 cooperates with the side 113, that is, the shape of the side 113 of the skirt 122 is exactly the same, so that the partition 12 can fit tightly with the side 113 of the outer cover 11, avoiding the presence of a gap in the partition 12 in the radial direction, thereby causing the muffler cavity 14 and the outer cavity 15 to not be completely separated or causing the partition 12 to move radially and generate greater noise.

[0066] In addition, it should be noted that the height of the skirt 122 needs to be greater than the height of the first outlet 111 to avoid the skirt 122 being unable to block the first outlet 111 during the upward movement of the partition 12, that is, the area of ​​the exhaust port cannot be adjusted.

[0067] In a specific embodiment, when the partition 12 is located at the lowest position in the housing 11, the first outlet 111 and the second outlet 121 completely overlap. That is, when the first outlet 111 and the second outlet 121 completely overlap, the partition 12 can no longer move downward.

[0068] The assembly relationship of the muffler structure provided in this embodiment is as follows: a first spring is placed on the positioning column 133, the outer cover 11 is placed outside the partition 12, and the top of the positioning column 133 passes through the positioning hole 115 of the outer cover 11. After completing the above steps, a second spring is placed on the positioning column 133, and then the nut is locked with the thread 1331 at the end of the positioning column 133 to complete the assembly of the muffler structure. The first spring and the second spring are always in a compressed state.

[0069] The silencing structure provided in this embodiment divides the outer cover 11 into two parts, the silencing chamber 14 and the outer chamber 15, through the partition 12, wherein the silencing chamber 14 realizes the silencing effect, and the outer chamber 15 is connected with the motor lower chamber 5. The partition 12 is fixed by the first spring, the second spring, the nut and the outer cover 11, the partition 12 is provided with a second outlet 121, and the outer cover 11 is provided with a first outlet 111. In the initial state, the first outlet 111 and the second outlet 121 completely overlap, as shown in FIG. Figure 6 As shown in the figure, when the compressor frequency increases, the pressure difference between the muffler chamber 14 and the outer chamber 15 increases, and the partition 12 is forced upward. When the partition 12 moves upward, the volume of the muffler chamber 14 increases, as shown in the figure. Figure 7As shown, the overlap area of ​​the first outlet 111 and the second outlet 121 is reduced, and the sound reduction is improved. When the compressor frequency decreases, the pressure difference between the silencer chamber 14 and the outer chamber 15 decreases, and the partition 12 is subjected to the combined force downward. When the partition 12 moves downward, the volume of the silencer chamber 14 decreases, and the overlap area of ​​the first outlet 111 and the second outlet 121 increases, and the performance is improved. When the pressure changes, the compression state of the first spring and the second spring changes, and the gas impact energy is converted into elastic potential energy and kinetic energy, which further reduces the compressor pneumatic noise.

[0070] Example 2

[0071] This embodiment provides a compressor, which includes the silencer structure 1 described in Embodiment 1.

[0072] In a specific embodiment, Fig. 9 and Fig.10 As shown, the compressor also includes a motor assembly 3 and a pump body assembly 4, and the silencer structure 1 is located between the motor assembly 3 and the pump body assembly 4, wherein a motor lower chamber 5 is formed between the stator 31, the rotor 32 of the motor assembly 3 and the pump body assembly 4, and an outer chamber 15 is formed between the upper end surface of the partition 12, the shaft neck of the flange 2 and the outer cover 11, and the motor lower chamber 5 and the outer chamber 15 are connected.

[0073] Of course, the compressor also includes a shell assembly 6, a lower cover 7 and a liquid distributor assembly 8. The lower cover 7 is arranged below the shell assembly 6, the motor assembly 3 and the pump body assembly 4 are located inside the shell assembly, and the liquid distributor assembly 8 is arranged outside the shell assembly 6 and is connected to the pump body assembly 4.

[0074] After adopting the muffler structure provided in Example 1, the operation mode of the compressor is:

[0075] When the compressor is not pneumatic or it is running in the low frequency range, the partition 12 is in the lowest state in the outer cover 11, at this time, the volume of the silencer chamber 14 is the smallest, and the area of ​​the exhaust port is the largest. At this time, the compressor has good performance, and because the operating frequency is low, the noise is also controlled under the joint action of the silencer chamber 14 and the exhaust port. When the frequency of the compressor gradually increases, the pressure difference between the silencer chamber 14 and the outer chamber 15 becomes larger. At this time, the partition 12 moves upward, the volume of the silencer chamber 14 increases, and the area of ​​the exhaust port decreases. The larger silencer chamber 14 and the smaller exhaust port can just adapt to the compressor with a higher frequency, so the high-frequency compressor at this time also has a good ability to eliminate noise.

[0076] Example 3

[0077] This embodiment provides an air conditioner, which includes the compressor described in Embodiment 2.

[0078] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.

[0079] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sound-absorbing structure, characterized in that: The muffler structure is fixed on the flange of the compressor; the muffler structure comprises an outer cover and a partition, the partition is located in the outer cover, and a muffler cavity is formed between the lower end surface of the partition, the flange and the side surface of the outer cover; the side surface of the outer cover has a first outlet, the end surface of the partition has a second outlet, and the first outlet and the second outlet cooperate to form an exhaust port; The muffler structure also includes an adjustment component, which connects the outer cover and the partition, and acts on the outer cover and the partition at the same time, and can make the partition move up and down in the outer cover to adjust the volume of the muffler chamber and the area of ​​the exhaust port.

2. The sound absorbing structure according to claim 1, characterized in that: The adjustment component includes a first elastic member and a second elastic member, one end of the first elastic member abuts against the upper end surface of the partition, the other end of the first elastic member abuts against the inside of the top surface of the outer cover, and the second elastic member abuts against the outside of the top surface of the outer cover; the pressure difference change between the inside and outside of the silencer chamber can cause the partition to move up and down, and under the action of the first elastic member and the second elastic member, the volume of the silencer chamber divided by the partition and the area of ​​the exhaust port can correspond to the pressure difference change.

3. The sound absorbing structure according to claim 2, characterized in that: The adjustment assembly also includes a positioning column, which is fixed to the upper end surface of the partition and has a top that passes through the top surface of the outer cover; the first elastic member is located on the positioning column and connected between the upper end surface of the partition and the top surface of the outer cover, and the second elastic member is located on the top of the positioning column extending out of the outer cover.

4. The sound absorbing structure according to claim 3, characterized in that: The first elastic member and the second elastic member are both springs, which are sleeved at the corresponding positions of the positioning column; and the top of the positioning column is provided with a limiting member. When the positioning column passes through the top surface of the outer cover and the second elastic member is sleeved on the protruding part, the limiting member is connected to the top of the positioning column.

5. The sound absorbing structure according to claim 4, characterized in that: The top of the positioning column is provided with a thread, and the limiting member is a nut, and the nut cooperates with the thread to limit the second elastic member.

6. The sound absorbing structure according to claim 3, characterized in that: The first elastic member, the second elastic member and the positioning column are each provided in plurality, and the three are provided in a one-to-one correspondence; And / or the positioning posts are evenly distributed along the circumferential direction on the upper end surface of the partition.

7. The sound-absorbing structure according to any one of claims 1 to 6, characterized in that: The outer cover comprises a top surface, the edge of the top surface extends downward to form a side surface, the side surface makes the inner part of the outer cover have a cavity, the partition is located in the cavity and can move up and down in the cavity; the first outlet is opened on the side surface.

8. The sound absorbing structure according to claim 7, characterized in that: The edge of the partition extends downward to form a skirt, and the skirt cooperates with the side surface to limit the radial movement of the partition in the cavity.

9. The sound-absorbing structure according to any one of claims 1 to 6, characterized in that: When the partition is located at the lowest position in the housing, the first outlet and the second outlet completely overlap.

10. A compressor, characterized in that: The compressor comprises the sound-absorbing structure according to any one of claims 1 to 9.

11. The compressor according to claim 10, characterized in that The compressor also includes a motor assembly and a pump body assembly, and the silencer structure is located between the motor assembly and the pump body assembly, wherein a motor lower cavity is formed between the stator and rotor of the motor assembly and the pump body assembly, and an outer cavity is formed between the upper end surface of the partition, the shaft neck of the flange and the outer cover, and the motor lower cavity and the outer cavity are connected.

12. An air conditioner, characterized in that: The air conditioner comprises the compressor according to claim 10 or 11.

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