Liquid accumulator and compressor with same

Abstract

The utility model provides a liquid storage device and a compressor with the liquid storage device, and the liquid storage device comprises a shell which is enclosed to form a containing cavity; the silencing structure is arranged in the containing cavity, the silencing structure is provided with a resonant cavity and a silencing inlet communicating with the resonant cavity, and the silencing inlet communicates with the containing cavity; the silencing inlet is located in the top of the silencing structure. By means of the technical scheme, the technical problem that in the prior art, noise of a liquid storage device is serious can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of liquid storage devices, and more specifically, to a liquid storage device and a compressor having the same. Background Art

[0002] At present, the compressor is the core component of the refrigeration system. The compressor mainly includes a compression mechanism, a housing, a driving motor, and a liquid storage device. Among them, the liquid storage device is connected to the outlet of the air conditioner evaporator and the compression mechanism, and is an important component of the compressor. It plays the roles of gas-liquid separation, reducing gas pressure pulsation, and reducing noise, and improves the efficiency of the compressor because it improves the smoothness of the suction process.

[0003] However, since the suction process during the operation of the compressor is intermittent and periodic, the liquid storage device will generate suction noise, eddy current noise, cavity resonance noise, etc. In addition, the vibration of the liquid storage device may excite the vibration of components such as connecting pipes, thereby generating secondary noise, that is, transmitted sound. Moreover, the vibration generated during the operation of the compressor will also be transmitted to the liquid storage device, and then radiate noise. In this way, the noise problem of the liquid storage device is relatively serious. Summary of the Utility Model

[0004] The main purpose of the present utility model is to provide a liquid storage device and a compressor having the same, so as to solve the technical problem of relatively serious noise of the liquid storage device in the prior art.

[0005] To achieve the above object, according to one aspect of the present utility model, there is provided a liquid storage device, including:

[0006] A housing that encloses to form a receiving cavity;

[0007] A sound-absorbing structure disposed in the receiving cavity. The sound-absorbing structure has a resonance cavity and a sound-absorbing inlet communicating with the resonance cavity, and the sound-absorbing inlet communicates with the receiving cavity;

[0008] Wherein, the sound-absorbing inlet is located at the top of the sound-absorbing structure.

[0009] Furthermore, the liquid storage device further includes a pipe disposed in the receiving cavity; the sound-absorbing structure is an annular structure, the inner ring of the annular structure is sleeved on the pipe and is spaced apart from the pipe, and the sound-absorbing inlet is located on the side of the sound-absorbing structure close to the pipe.

[0010] Furthermore, the sound-absorbing structure is an annular structure, the sound-absorbing structure has at least two separated resonance cavities and at least two sound-absorbing inlets, the at least two sound-absorbing inlets are arranged in one-to-one correspondence with the at least two resonance cavities, and each sound-absorbing inlet communicates with the corresponding resonance cavity;

[0011] Wherein, the at least two sound-absorbing inlets are arranged around the circumference of the inner ring of the annular structure; and / or,

[0012] At least two resonant cavities are arranged along the periphery of the annular structure; and / or,

[0013] At least two resonant cavities are symmetrically distributed.

[0014] Furthermore, the inner ring of the annular structure is a square structure, and the sound absorption inlet is a strip-shaped opening extending along the edge of the square structure;

[0015] Wherein, at least two sound absorption inlets are oppositely distributed on both sides of the inner ring; or,

[0016] At least two sound absorption inlets are symmetrically distributed on both sides of the inner ring.

[0017] Furthermore, at least part of the outer ring of the annular structure is connected to the inner wall of the housing, and an avoidance recess for avoiding the inner wall of the housing is provided at the outer ring of the annular structure.

[0018] Furthermore, there are multiple avoidance recesses, and the multiple avoidance recesses are arranged at intervals along the outer ring of the annular structure.

[0019] Furthermore, the sound absorption structure further includes:

[0020] A diversion section is arranged at the sound absorption inlet, at least part of the diversion section is inserted into the resonant cavity, and the diversion section extends along the height direction of the sound absorption structure towards the bottom of the resonant cavity and is arranged at an interval from the bottom of the resonant cavity.

[0021] Furthermore, along the extension direction from the top of the resonant cavity to the bottom of the resonant cavity, the flow-through cross-section of the diversion section gradually decreases; or,

[0022] Along the extension direction from the top of the resonant cavity to the bottom of the resonant cavity, the diversion section has at least two sequentially connected diversion sub-sections, and the flow-through cross-section of one of the adjacent two diversion sub-sections close to the bottom of the resonant cavity is smaller than that of the other of the adjacent two diversion sub-sections.

[0023] Furthermore, the sound absorption structure has at least two separately arranged resonant cavities and at least two sound absorption inlets, the at least two sound absorption inlets are arranged in one-to-one correspondence with the at least two resonant cavities, and each sound absorption inlet is communicated with the corresponding resonant cavity;

[0024] Wherein, a diversion section is arranged at at least one sound absorption inlet.

[0025] Furthermore, there are at least two diversion sections, the at least two diversion sections are arranged in one-to-one correspondence with the at least two sound absorption inlets, and each diversion section is arranged at the corresponding sound absorption inlet;

[0026] Wherein, the structures of the multiple diversion sections and the depths inserted into the resonant cavity are the same; or,

[0027] At least one of the structures of at least two flow guiding sections and the depth inserted into the resonance cavity is different.

[0028] Furthermore, the height of the sound absorption structure is h, where 15 mm ≤ h ≤ 40 mm; and / or,

[0029] The distance between the inner ring of the annular structure and the pipe is d, where d ≥ 5 mm; and / or,

[0030] The sound absorption inlet is a strip-shaped opening, and the width of the strip-shaped opening is b, where 1 mm ≤ b ≤ 3 mm.

[0031] Furthermore, there are multiple sound absorption structures, and the multiple sound absorption structures are arranged at intervals along the height direction of the housing; and / or,

[0032] The sound absorption structure further includes at least two partitions, and the at least two partitions are arranged at intervals to enclose at least two resonance cavities.

[0033] According to another aspect of the present invention, a compressor is provided, including the liquid storage device provided above.

[0034] Applying the technical solution of the present invention, by providing a sound absorption structure in the liquid storage device, part of the air flow in the accommodation cavity enters the resonance cavity through the sound absorption inlet, so that the noise reduction effect of the air flow is realized through the resonance cavity to reduce the noise in the liquid storage device. Specifically, by arranging the sound absorption inlet at the top of the sound absorption structure, the gas in the accommodation cavity can be effectively received through the sound absorption inlet, which is convenient for effectively enabling the gas in the accommodation cavity to smoothly and fully enter the resonance cavity, so as to effectively ensure the noise reduction and sound elimination effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0036] Figure 1 Shows a schematic structural diagram of a liquid storage device provided according to Embodiment 1 of the present invention;

[0037] Figure 2 Shows a top view of a sound absorption structure provided according to Embodiment 1 of the present invention;

[0038] Figure 3 Shows a cross-sectional view of a sound absorption structure provided according to Embodiment 1 of the present invention;

[0039] Figure 4 Shows a schematic structural diagram of a liquid storage device provided according to Embodiment 2 of the present invention;

[0040] Figure 5Shows a top view of the sound insulation structure provided in the second embodiment of the present utility model;

[0041] Figure 6 Shows a cross-sectional view of the sound insulation structure provided in the second embodiment of the present utility model;

[0042] Figure 7 Shows a schematic structural diagram of the liquid storage device provided in the third embodiment of the present utility model;

[0043] Figure 8 Shows a top view of the sound insulation structure provided in the third embodiment of the present utility model;

[0044] Figure 9 Shows a cross-sectional view of the sound insulation structure provided in the third embodiment of the present utility model;

[0045] Figure 10 Shows a schematic structural diagram of the liquid storage device provided in the fourth embodiment of the present utility model;

[0046] Figure 11 Shows a top view of the sound insulation structure provided in the fourth embodiment of the present utility model;

[0047] Figure 12 Shows a cross-sectional view of the sound insulation structure provided in the fourth embodiment of the present utility model;

[0048] Figure 13 Shows a comparison diagram of the noise reduction effect of the liquid storage device provided in the embodiment of the present utility model and the liquid storage device in the prior art.

[0049] Among them, the above-mentioned drawings include the following reference numerals:

[0050] 10. Outer shell; 11. Accommodation cavity;

[0051] 20. Sound insulation structure; 21. Resonance cavity; 22. Sound insulation inlet; 23. Diversion section; 24. Avoidance recess; 25. Partition board;

[0052] 30. Pipeline. Detailed implementation manners

[0053] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0054] Such as Figures 1 to 12As shown in the figure, an embodiment of the present utility model provides a liquid reservoir, which includes a housing 10 and a sound-absorbing structure 20. The housing 10 encloses to form a receiving cavity 11; the sound-absorbing structure 20 is arranged in the receiving cavity 11. The sound-absorbing structure 20 has a resonance cavity 21 and a sound-absorbing inlet 22 communicated with the resonance cavity 21, and the sound-absorbing inlet 22 is communicated with the receiving cavity 11. Among them, the sound-absorbing inlet 22 is located at the top of the sound-absorbing structure 20.

[0055] Adopting the technical solution provided by this embodiment, by arranging the sound-absorbing structure 20 in the liquid reservoir, part of the air flow in the receiving cavity 11 enters the resonance cavity 21 through the sound-absorbing inlet 22, so as to achieve the noise reduction effect on the air flow through the resonance cavity 21, thereby reducing the noise in the liquid reservoir. Specifically, by arranging the sound-absorbing inlet 22 at the top of the sound-absorbing structure 20, the gas in the receiving cavity 11 can be effectively received through the sound-absorbing inlet 22, which is convenient for the gas in the receiving cavity 11 to smoothly and fully enter the resonance cavity 21, so as to effectively ensure the noise reduction and noise elimination effect. Therefore, through the technical solution provided by this embodiment, the technical problem of serious noise in the liquid reservoir in the prior art can be solved.

[0056] In this embodiment, the liquid reservoir further includes a pipeline 30, and the pipeline 30 is arranged in the receiving cavity 11; the sound-absorbing structure 20 is an annular structure, and the inner ring of the annular structure is sleeved on the pipeline 30 and is arranged at an interval from the pipeline 30. The sound-absorbing inlet 22 is located on the side of the sound-absorbing structure 20 close to the pipeline 30. Since the air flow in the receiving cavity 11 will flow through the gap between the inner ring and the pipeline 30, such a setting can facilitate the air flow in the receiving cavity 11 to fully and smoothly enter the sound-absorbing inlet 22, ensure the air intake volume of the sound-absorbing inlet 22, and thus effectively ensure the noise reduction effect.

[0057] Specifically, the sound-absorbing structure 20 is an annular structure. The sound-absorbing structure 20 has at least two resonance cavities 21 separated from each other and at least two sound-absorbing inlets 22. The at least two sound-absorbing inlets 22 are arranged in one-to-one correspondence with the at least two resonance cavities 21, and each sound-absorbing inlet 22 is communicated with the corresponding resonance cavity 21. Adopting such a structural setting can facilitate the resonance noise reduction by the multiple separated resonance cavities 21 respectively, improve the noise reduction effect, and help to achieve a higher sound absorption volume in a wider frequency band.

[0058] Among them, the at least two sound-absorbing inlets 22 are arranged around the circumference of the inner ring of the annular structure, so as to facilitate the intake of air flow through the at least two sound-absorbing inlets 22 to ensure that the air flow can smoothly enter the resonance cavity 21.

[0059] The at least two resonance cavities 21 are arranged along the circumference of the annular structure, so as to optimize the structural layout of the resonance cavity 21 and facilitate sufficient noise reduction and noise elimination.

[0060] At least two resonant cavities 21 are symmetrically distributed to facilitate better noise reduction and improve the uniformity of noise reduction.

[0061] Specifically, the inner circle of the annular structure is a square structure, and the sound absorption inlet 22 is a strip-shaped opening extending along the edge of the square structure. In this way, it is convenient for the air flow in the accommodation cavity 11 to fully flow into the resonant cavity 21.

[0062] Among them, at least two sound absorption inlets 22 are oppositely distributed on both sides of the inner circle to effectively intake air and reduce noise for the air flow on both sides of the inner circle. Or, at least two sound absorption inlets 22 are symmetrically distributed on both sides of the inner circle to improve the uniformity of sound absorption and noise reduction, so as to achieve a better overall noise reduction effect.

[0063] In this embodiment, at least a part of the outer circle of the annular structure is connected to the inner wall of the housing 10, and an avoidance recess 24 for avoiding the inner wall of the housing 10 is provided at the outer circle of the annular structure. With such a structural arrangement, it is convenient for a part of the air flow in the accommodation cavity 11 to smoothly avoid the recess 24, avoiding the situation of unsmooth air flow caused by excessive flow blockage of the accommodation cavity 11 by the sound absorption structure 20, and also avoiding the situation of generating another kind of noise caused thereby.

[0064] Specifically, there are a plurality of avoidance recesses 24, and the plurality of avoidance recesses 24 are arranged at intervals along the outer circle of the annular structure, so that the air flow can smoothly pass through the plurality of avoidance recesses 24 at the outer peripheral edge of the outer circle, facilitating the smooth flow of the air flow.

[0065] In this embodiment, the sound absorption structure 20 further includes a diversion section 23. The diversion section 23 is arranged at the sound absorption inlet 22, at least a part of the diversion section 23 is inserted into the resonant cavity 21, and the diversion section 23 extends along the height direction of the sound absorption structure 20 towards the bottom of the resonant cavity 21 and is spaced from the bottom of the resonant cavity 21. With such a structural arrangement, the flow cross-section of the diversion section 23 must be smaller than that of the resonant cavity 21. In this way, the air flow will enter the resonant cavity 21 after passing through the diversion section 23 with a smaller flow cross-section, so as to better ensure the resonance noise reduction and sound absorption effect.

[0066] Specifically, the insertion depth of the diversion section 23 in this embodiment is limited by the height of the resonant cavity 21, so that the insertion depth of the diversion section 23 must be less than the height of the corresponding resonant cavity 21.

[0067] Specifically, along the extension direction from the top to the bottom of the resonance cavity 21, the flow cross-section of the diversion section 23 gradually decreases. Alternatively, along the extension direction from the top to the bottom of the resonance cavity 21, the diversion section 23 has at least two sequentially connected diversion sub-sections, and the flow cross-section of one of the adjacent two diversion sub-sections closer to the bottom of the resonance cavity 21 is smaller than that of the other of the adjacent two diversion sub-sections, so as to form a stepped micro-slit structure. With such a structural arrangement, the resonance noise reduction and sound absorption effect can be better improved.

[0068] In this embodiment, the sound absorption structure 20 has at least two separately arranged resonance cavities 21 and at least two sound absorption inlets 22. The at least two sound absorption inlets 22 are arranged in one-to-one correspondence with the at least two resonance cavities 21, and each sound absorption inlet 22 is communicated with the corresponding resonance cavity 21. Among them, a diversion section 23 is arranged at at least one sound absorption inlet 22. In this way, it is convenient to better improve the noise reduction effect of each resonance cavity 21.

[0069] Specifically, when there are two sound absorption inlets 22, a diversion section 23 can be arranged at one of the sound absorption inlets 22, and no diversion section 23 is arranged at the other sound absorption inlet 22. In this way, the acoustic impedances of the two resonance cavities 21 will be different, and thus the resonance frequencies will be different. It is possible to dissipate the resonance sound energy at different resonance frequencies, so as to achieve efficient noise reduction and sound absorption in different frequency bands and better improve the noise reduction effect.

[0070] In this embodiment, there are at least two diversion sections 23, and the at least two diversion sections 23 are arranged in one-to-one correspondence with the at least two sound absorption inlets 22, and each diversion section 23 is arranged at the corresponding sound absorption inlet 22. With such an arrangement, it is convenient to better improve the noise reduction effect of each resonance cavity 21.

[0071] Among them, the structures of the multiple diversion sections 23 and the depths inserted into the resonance cavity 21 are the same. In this way, it can be ensured that the resonance frequencies of each resonance cavity 21 are the same, so as to better weaken or even eliminate the airflow noise in a specific frequency band. Alternatively, at least one of the structures of the at least two diversion sections 23 and the depths inserted into the resonance cavity 21 is different. In this way, it is convenient to make the vibration damping frequencies of the at least two resonance cavities 21 different, so as to facilitate the realization of the vibration damping and noise reduction effects in different frequency bands.

[0072] Specifically, the height of the sound absorption structure 20 is h, and 15 mm ≤ h ≤ 40 mm, so as to ensure that there is enough space for the resonance cavity 21 inside the sound absorption structure 20. The above arrangement can avoid the situation where the volume of the resonance cavity 21 is too small resulting in limited resonance effect, and also avoid the situation where the height of the sound absorption structure 20 is too high resulting in limited space for the internal refrigerant circulation due to occupying too much space inside the liquid storage device.

[0073] Specifically, the distance between the inner circle of the annular structure and the pipe 30 is d, where d≥5mm. In this way, it is convenient to ensure the smooth flow of the air flow inside the liquid reservoir.

[0074] Specifically, the sound-absorbing inlet 22 is a strip-shaped opening with a width of b, where 1mm≤b≤3mm. With such a structural arrangement, it is convenient for the air flow inside the liquid reservoir to smoothly enter the resonance cavity 21 through the strip-shaped opening, and it can also avoid the reduction of the resonance effect of the resonance cavity 21 due to the excessive width of the strip-shaped opening. Therefore, it is convenient to effectively ensure the resonance effect while ensuring the smooth entry of the air flow into the resonance cavity 21.

[0075] In this embodiment, there are multiple sound-absorbing structures 20, and the multiple sound-absorbing structures 20 are arranged at intervals along the height direction of the outer shell 10. With such a structural arrangement, it is convenient to better achieve the noise reduction effect on the air flow inside the accommodation cavity 11.

[0076] Specifically, the sound-absorbing structure 20 further includes at least two partition plates 25, and the at least two partition plates 25 are arranged at intervals to enclose at least two resonance cavities 21. In this way, it is convenient to effectively form at least two resonance cavities 21 and ensure the structural strength of the sound-absorbing structure 20.

[0077] In addition, the installation position of the sound-absorbing structure 20 inside the outer shell 10 can be changed, thereby changing the mode of the accommodation cavity 11 and causing the frequencies of the peaks and valleys of the transmission loss curve to change. By arranging multiple sound-absorbing structures 20 with sound-absorbing functions in the axial direction of the liquid reservoir, on the one hand, the stiffness of the liquid reservoir can be improved, and its structural and cavity natural modal frequencies can be changed. On the other hand, the sound attenuation amount in a specific frequency band can be increased.

[0078] Due to the adoption of the sound-absorbing structure 20 provided in the embodiment, compared with the traditional liquid reservoir, the liquid reservoir in this embodiment effectively reduces the noise in the 0-2000Hz frequency band. In addition, different resonance cavities 21 with variable micro-slit cross-sections are designed in the above embodiment, and by utilizing their coupling effect, the sound attenuation amount in a specific frequency band can be greatly increased.

[0079] Specifically, the transmission loss (sound attenuation amount) of the liquid reservoir is calculated according to the following formula:

[0080]

[0081] Among them, ρc represents the acoustic impedance of the fluid medium, P IRe and P IIm respectively represent the real and imaginary parts of the acoustic pressure at the inlet, A i represents the inlet cross-sectional area, P ORe and P OIm respectively represent the real and imaginary parts of the acoustic pressure at the outlet, A o represents the outlet cross-sectional area.

[0082] According to the above formula, for the silencing structure 20 attached with two stepped micro-slit resonators 21 in this embodiment, the transmission loss of noise of the liquid reservoir in this embodiment is numerically calculated. The comparison result of the transmission loss of noise of the liquid reservoir in this embodiment (corresponding to the current solution) and the transmission loss of noise of the liquid reservoir in the prior art (corresponding to the original solution) is shown in Figure 13 As shown. The height of the partition 25 of the liquid reservoir in this embodiment can be set to 15.0 mm. It is composed of two micro-slit resonators 21, and the volumes of the two resonators 21 are the same, while the widths and heights of the micro-slits are different. Among them, the width of the noise reduction inlet of one resonator 21 is 1.5 mm, and the height of the diversion section is 1.0 mm; the other resonator 21 adopts a stepped diversion section structure, the heights of the diversion sections are all 5.0 mm, the width of the noise reduction inlet is 1.5 mm, and the width of the micro-slit at one end of the diversion section far from the noise reduction inlet is 1.0 mm.

[0083] Specifically, as Figures 1 to 3 shown, two symmetrically arranged noise reduction inlets 22 and corresponding two resonators 21 are provided on the liquid reservoir in the first embodiment of the present invention.

[0084] As Figures 4 to 6 shown, two symmetrically arranged noise reduction inlets 22 and corresponding two damping cavities are provided on the liquid reservoir in the second embodiment of the present invention. A diversion section 23 is provided at one noise reduction inlet 22, and no diversion section 23 is provided at the other noise reduction inlet 22.

[0085] As Figures 7 to 9 shown, two symmetrically arranged noise reduction inlets 22 and corresponding two damping cavities are provided on the liquid reservoir in the third embodiment of the present invention. Diversion sections 23 are provided at both noise reduction inlets 22, and the heights of the two diversion sections 23 are not equal.

[0086] As Figures 10 to 12 shown, four symmetrically arranged noise reduction inlets 22 and corresponding four damping cavities are provided on the liquid reservoir in the fourth embodiment of the present invention. Diversion sections 23 are provided at all four noise reduction inlets 22, and the heights of at least two diversion sections 23 are not equal.

[0087] The fifth embodiment of the present invention provides a compressor, including the liquid reservoir provided in the first embodiment above.

[0088] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: The problem of broadband noise generated by the liquid reservoir can effectively reduce noise in the frequency band of 0 - 2000 Hz, and achieve the maximum transmission loss near 1050 Hz. On the one hand, the installation of the silencing structure 20 can improve the stiffness of the liquid distributor and increase its natural frequency; on the other hand, the resonance cavity 21 converts sound energy into kinetic energy and heat energy to dissipate sound energy and achieve silencing. By designing the liquid reservoir partition 25 as a silencing structure 20 with multiple stepped micro-slit resonance cavities 21, it is possible to effectively reduce broadband noise in the 0 - 2000 Hz broadband; by setting a silencing structure with multiple stepped micro-slit resonance cavities 21 with varying cross-sections, it is possible to further increase the silencing amount in a specific frequency band; by changing the upper and lower widths and heights of the stepped micro-slits (i.e., the upper and lower widths and heights of the diversion section 23), the acoustic impedance changes, achieving an increase in the silencing amount in a specific frequency band; by increasing or decreasing the number of partitions 25 in the silencing structure, and thus changing the number and volume of the resonance cavities 21, an increase in the silencing amount in a specific frequency band is achieved.

[0089] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0090] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further discussion in subsequent drawings.

[0091] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0092] For convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations should be made for the spatial relative descriptions used here.

[0093] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present application.

[0094] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A liquid storage device, characterized in that: include: A housing (10), wherein the housing (10) encloses a receiving cavity (11); A sound-absorbing structure (20) is arranged in the accommodating cavity (11), the sound-absorbing structure (20) comprising a resonance cavity (21) and a sound-absorbing inlet (22) communicating with the resonance cavity (21), the sound-absorbing inlet (22) communicating with the accommodating cavity (11); Wherein, the silencer inlet (22) is located at the top of the silencer structure (20).

2. The liquid storage device according to claim 1, characterized in that: The liquid storage device further comprises a pipeline (30), wherein the pipeline (30) is arranged in the accommodating chamber (11); the muffler structure (20) is an annular structure, wherein an inner ring of the annular structure is arranged on the pipeline (30) and is spaced apart from the pipeline (30); and the muffler inlet (22) is located on a side of the muffler structure (20) close to the pipeline (30).

3. The liquid storage device according to claim 1, characterized in that: The muffler structure (20) is an annular structure, and comprises at least two separately arranged resonance cavities (21) and at least two muffler inlets (22), the at least two muffler inlets (22) being arranged in one-to-one correspondence with the at least two resonance cavities (21), and each of the muffler inlets (22) being in communication with the corresponding resonance cavity (21); Wherein, at least two of the muffler inlets (22) are arranged around the periphery of the inner ring of the annular structure; and / or, At least two of the resonance cavities (21) are arranged along the periphery of the annular structure; and / or, At least two of the resonance cavities (21) are symmetrically distributed.

4. The liquid reservoir according to claim 3, characterized in that The inner ring of the annular structure is a square structure, and the muffler inlet (22) is a strip-shaped opening extending along the edge of the square structure; Wherein, at least two of the muffler inlets (22) are relatively distributed on both sides of the inner ring; or, At least two of the muffler inlets (22) are symmetrically distributed on both sides of the inner ring.

5. The liquid reservoir according to claim 3, characterized in that: At least part of the outer ring of the annular structure is connected to the inner wall of the outer shell (10), and an avoidance recess (24) for avoiding the inner wall of the outer shell (10) is provided at the outer ring of the annular structure.

6. The liquid reservoir according to claim 5, characterized in that There are a plurality of the avoidance recesses (24), and the plurality of the avoidance recesses (24) are arranged at intervals along the outer ring of the annular structure.

7. The liquid reservoir according to claim 1, characterized in that The noise reduction structure (20) further comprises: A guide section (23) is arranged at the muffler inlet (22), at least a portion of the guide section (23) is inserted into the resonance cavity (21), and the guide section (23) extends toward the bottom of the resonance cavity (21) along the height direction of the muffler structure (20) and is spaced apart from the bottom of the resonance cavity (21).

8. The liquid reservoir according to claim 7, characterized in that Along the extension direction from the top of the resonance cavity (21) to the bottom of the resonance cavity (21), the flow cross section of the guide section (23) gradually decreases; or, Along the extension direction from the top of the resonance cavity (21) to the bottom of the resonance cavity (21), the flow guide section (23) has at least two flow guide sub-segments connected in sequence, and the flow cross section of one of the two adjacent flow guide sub-segments close to the bottom of the resonance cavity (21) is smaller than the flow cross section of the other of the two adjacent flow guide sub-segments.

9. The liquid reservoir according to claim 7, characterized in that: The muffler structure (20) comprises at least two separately arranged resonance cavities (21) and at least two muffler inlets (22), the at least two muffler inlets (22) being arranged in one-to-one correspondence with the at least two resonance cavities (21), and each muffler inlet (22) being connected to the corresponding resonance cavity (21); Wherein, at least one of the silencer inlets (22) is provided with the guide section (23).

10. The liquid reservoir according to claim 7, characterized in that There are at least two guide sections (23), and at least two guide sections (23) are arranged in one-to-one correspondence with at least two muffler inlets (22), and each guide section (23) is arranged at a corresponding muffler inlet (22); Wherein, the structures of the plurality of guide sections (23) and the depths of insertion into the resonance cavity (21) are the same; or, At least two of the guide sections (23) have different structures and at least one of the depths of insertion into the resonance cavity (21).

11. The liquid reservoir according to claim 2, characterized in that The height of the noise reduction structure (20) is h, 15 mm ≤ h ≤ 40 mm; and / or, The distance between the inner ring of the annular structure and the pipe (30) is d, d≥5mm; and / or, The muffler inlet (22) is a strip-shaped opening, and the width of the strip-shaped opening is b, 1mm≤b≤3mm.

12. The liquid storage device according to any one of claims 1 to 11, characterized in that: There are a plurality of the noise reduction structures (20), and the plurality of the noise reduction structures (20) are arranged at intervals along the height direction of the housing (10); and / or, The noise reduction structure (20) further comprises at least two partitions (25), wherein the at least two partitions (25) are arranged at intervals to enclose at least two resonance cavities (21).

13. A compressor, characterized in that: A liquid reservoir comprising any one of claims 1 to 12.

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