Liquid accumulator and compressor with same

Abstract

The utility model provides a liquid storage device and a compressor with the liquid storage device. The silencing structure is installed in the outer shell, the silencing structure comprises a silencing shell and an insertion pipe which are connected with each other, the silencing structure is provided with a silencing cavity and a communication opening communicated with the silencing cavity, the communication opening is communicated with an inner cavity of the outer shell, the insertion pipe is inserted into the communication opening, and at least part of the insertion pipe extends into the silencing cavity to form a necking section. 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 liquid storage devices, and in particular, 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 drive 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 by improving 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, a liquid storage device is provided, including:

[0006] A housing;

[0007] A noise elimination structure installed in the housing. The noise elimination structure includes a noise elimination housing and an insertion tube connected to each other. The noise elimination housing has a noise elimination cavity and a communication port communicating with the noise elimination cavity. The communication port communicates with the inner cavity of the housing. The insertion tube is inserted at the communication port, and at least a part of the insertion tube extends into the noise elimination cavity to form a necking section.

[0008] Further, the noise elimination structure has at least two separately arranged noise elimination cavities and at least two communication ports. The at least two noise elimination cavities and the at least two communication ports are arranged in one-to-one correspondence. Each communication port communicates with the corresponding noise elimination cavity; the insertion tubes are at least two, and the at least two insertion tubes are arranged in one-to-one correspondence with the at least two communication ports. Each insertion tube is inserted at the corresponding communication port.

[0009] Further, the depths of the at least two insertion tubes inserted into the corresponding noise elimination cavities are different; and / or,

[0010] The volumes of the at least two separately arranged noise elimination cavities are equal.

[0011] Furthermore, an avoidance hole is provided on the sound-absorbing housing, and the liquid reservoir further includes a pipeline. The avoidance hole is arranged to avoid the pipeline so that the sound-absorbing housing is sleeved on the pipeline;

[0012] Among them, at least two sound-absorbing cavities are arranged circumferentially around the avoidance hole, and at least two communication ports are all arranged towards the pipeline; and / or,

[0013] There are multiple sound-absorbing structures, and the multiple sound-absorbing structures are arranged at intervals along the height direction of the pipeline; and / or,

[0014] The distance between the hole side wall of the avoidance hole and the pipeline is L, and L≥5mm.

[0015] Furthermore, the sound-absorbing structure has at least two sound-absorbing cavities that are separately arranged, and the at least two sound-absorbing cavities are communicated through a connection port. The sound-absorbing structure further includes a connecting pipe, and the connecting pipe is inserted at the connection port;

[0016] Among them, the first part of the connecting pipe is inserted into one of the at least two sound-absorbing cavities; and / or,

[0017] The second part of the connecting pipe is inserted into the other of the at least two sound-absorbing cavities.

[0018] Furthermore, along the extending direction from the communication port to the sound-absorbing cavity, the flow-through cross-section of the insertion pipe gradually decreases; or,

[0019] The insertion pipe has a first communication section and a second communication section that are sequentially communicated along the extending direction from the communication port to the sound-absorbing cavity, and the flow-through cross-section of the first communication section is larger than that of the second communication section.

[0020] Furthermore, the insertion pipe has at least one stepped stage so that at least part of the insertion pipe forms at least two successively connected necking sections.

[0021] Furthermore, along the extending direction from the communication port to the sound-absorbing cavity, the flow-through cross-sections of the at least two successively connected necking sections gradually decrease; and / or,

[0022] The sound-absorbing structure has at least two separately arranged sound-absorbing cavities and at least two communication ports. The at least two sound-absorbing cavities are arranged in one-to-one correspondence with the at least two communication ports, and each communication port is communicated with the corresponding sound-absorbing cavity; there are at least two insertion pipes, and the at least two insertion pipes are arranged in one-to-one correspondence with the at least two communication ports, and each insertion pipe is inserted at the corresponding communication port.

[0023] Furthermore, the sound-absorbing housing is an annular housing, the outer ring of the sound-absorbing housing is connected to the inner wall of the outer housing, and the communication port is arranged on the inner ring of the sound-absorbing housing; and / or,

[0024] The insertion pipe is located in the middle of the sound-absorbing cavity where the insertion pipe is installed.

[0025] Further, the height of the sound-absorbing housing is h, where 15 mm ≤ h ≤ 40 mm; and / or,

[0026] The inner diameter of the insertion tube is d, where 2.5 mm ≤ d ≤ 5 mm.

[0027] According to another aspect of the present utility model, there is provided a compressor including the liquid reservoir provided above.

[0028] Applying the technical solution of the present utility model, by providing a sound-absorbing cavity structure in the form of an insertion tube and connecting the sound-absorbing cavity to the inner cavity of the housing, the resonance of the sound-absorbing cavity can effectively reduce the noise inside the liquid reservoir. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0030] FIG. 1(a) shows a cross-sectional view of the liquid reservoir provided in the first embodiment of the present utility model in one direction;

[0031] FIG. 1(b) shows a cross-sectional view of the liquid reservoir provided in the first embodiment of the present utility model in another direction;

[0032] FIG. 2(a) shows a cross-sectional view of the liquid reservoir provided in the second embodiment of the present utility model in one direction;

[0033] FIG. 2(b) shows a cross-sectional view of the liquid reservoir provided in the second embodiment of the present utility model in another direction;

[0034] FIG. 3(a) shows a cross-sectional view of the liquid reservoir provided in the third embodiment of the present utility model in one direction;

[0035] FIG. 3(b) shows a cross-sectional view of the liquid reservoir provided in the third embodiment of the present utility model in another direction;

[0036] FIG. 4(a) shows a cross-sectional view of the liquid reservoir provided in the fourth embodiment of the present utility model in one direction;

[0037] FIG. 4(b) shows a cross-sectional view of the liquid reservoir provided in the fourth embodiment of the present utility model in another direction;

[0038] Figure 5 FIG. shows a comparison diagram of the sound-absorbing effect of the liquid reservoir provided in the embodiment of the present utility model.

[0039] Among them, the above-mentioned drawings include the following reference numerals:

[0040] 10. Housing;

[0041] 20, Noise elimination structure; 21, Noise elimination housing; 211, Noise elimination cavity; 212, Avoidance hole; 2121, Hole side wall; 22, Insertion tube; 221, Platform stage; 23, Connecting pipe; 24, Partition board;

[0042] 30, Pipeline. Specific implementation manner

[0043] 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.

[0044] As Figures 1(a) to 4(b) shown, the embodiment of the present utility model provides a liquid storage device, which includes: an outer shell 10 and a noise elimination structure 20. The noise elimination structure 20 is installed inside the outer shell 10. The noise elimination structure 20 includes a noise elimination housing 21 and an insertion tube 22 that are connected to each other. The noise elimination structure 20 has a noise elimination cavity 211 and a communication port that communicates with the noise elimination cavity 211. The communication port communicates with the inner cavity of the outer shell 10. The insertion tube 22 is inserted at the communication port, and at least a part of the insertion tube 22 extends into the noise elimination cavity 211 to form a necking section.

[0045] By using the liquid storage device provided in this embodiment, through the provision of a noise elimination cavity 211 structure in the form of an insertion tube 22 and making the noise elimination cavity 211 communicate with the inner cavity of the outer shell 10, the noise inside the liquid storage device can be effectively reduced through the resonance of the noise elimination cavity 211. Therefore, with the liquid storage device provided in this embodiment, the technical problem of relatively serious noise in the liquid storage device in the prior art can be solved.

[0046] Specifically, the noise elimination housing 21 can also be called a plate body assembly. The plate body assembly encloses the noise elimination cavity 211, and the noise elimination cavity 211 communicates with the inner cavity of the outer shell 10 only through the communication port. The outer shell 10 includes a lower cover plate, a cylinder body, and an upper cover plate that are connected in sequence.

[0047] Specifically, the noise elimination structure 20 has at least two separately arranged noise elimination cavities 211 and at least two communication ports. The at least two noise elimination cavities 211 are arranged in one-to-one correspondence with the at least two communication ports, and each communication port communicates with the corresponding noise elimination cavity 211; there are at least two insertion tubes 22, and the at least two insertion tubes 22 are arranged in one-to-one correspondence with the at least two communication ports, and each insertion tube 22 is inserted at the corresponding communication port. With such a structural arrangement, it is convenient to enable multiple noise elimination cavities 211 to achieve resonance noise reduction, thereby better improving the noise reduction effect.

[0048] Specifically, the insertion depths of at least two intubation tubes 22 into the corresponding sound-absorbing cavities 211 are different, so that the resonance frequencies of at least two sound-absorbing cavities 211 are different, thereby facilitating noise reduction of noises with different frequencies in the inner cavity of the housing 10 to achieve the noise reduction effect for noises in different frequency bands. With such a setting, the acoustic impedance of the corresponding sound-absorbing cavity 211 can be changed to improve the sound absorption effect for noises in a specific frequency band.

[0049] Specifically, the volumes of at least two separately arranged sound-absorbing cavities 211 can be made equal, which is convenient for forming at least two separated sound-absorbing cavities 211 with a uniform distribution, so as to better effectively reduce the noise at different positions in the inner cavity of the housing 10.

[0050] Specifically, at least two partition plates 24 are arranged in the sound-absorbing housing 21 to divide the sound-absorbing housing 21 into at least two sound-absorbing cavities 211 through the at least two partition plates 24. By changing the number of partition plates 24, the number and volume of the corresponding sound-absorbing cavities 211 can be changed, thereby achieving an increase in the sound absorption amount for a specific frequency band.

[0051] In addition, by making the volumes of two separately arranged sound-absorbing cavities 211 equal and making the insertion depths of at least the intubation tubes 22 into the corresponding sound-absorbing cavities 211 different, it is convenient to effectively ensure that the resonance frequencies of at least two sound-absorbing cavities 211 are different to effectively reduce the noise in different frequency bands.

[0052] In this embodiment, an avoidance hole 212 is arranged on the sound-absorbing housing 21. The liquid storage device further includes a pipeline 30. The avoidance hole 212 is arranged to avoid the pipeline 30, so that the sound-absorbing housing 21 is sleeved on the pipeline 30. At least two sound-absorbing housings 21 are arranged circumferentially around the avoidance hole 212, and at least two communication ports are all arranged towards the pipeline 30. With such a structural setting, it is convenient to effectively make the air flow at the avoidance hole 212 smoothly enter the communication port, thereby facilitating effective noise reduction of the air flow in the inner cavity of the housing 10.

[0053] Specifically, there are multiple sound-absorbing structures 20, and the multiple sound-absorbing structures 20 are arranged at intervals along the height direction of the liquid storage device. With such a structural setting, it is convenient to better effectively reduce the noise in the inner cavity of the housing 10 and further improve the noise reduction effect. The above setting can achieve noise reduction in a wider frequency band range and can also achieve a change in the frequency in the inner cavity of the housing 10.

[0054] In this embodiment, the distance between the hole side wall 2121 of the avoidance hole 212 and the pipeline 30 is L, and L≥5mm. With such a structural setting, it is convenient to effectively ensure the air flow and avoid the sound-absorbing structure 20 from blocking the air flow in the housing 10.

[0055] Specifically, the sound absorption structure 20 has at least two sound absorption cavities 211 that are separated from each other. The at least two sound absorption cavities 211 are communicated through connection ports. The sound absorption structure 20 further includes a connecting pipe 23, and the connecting pipe 23 is inserted at the connection ports. With such a structural arrangement, it is possible to facilitate the formation of at least two successively communicated sound absorption cavities 211, so as to gradually reduce noise through the at least two successively communicated sound absorption cavities 211, and better improve the noise reduction effect.

[0056] Specifically, a first part of the connecting pipe 23 can be inserted into one of the at least two sound absorption cavities 211, so as to form a constriction section in one of the at least two sound absorption cavities 211, thereby facilitating the effective improvement of the noise reduction effect.

[0057] Specifically, a second part of the connecting pipe 23 is inserted into the other of the at least two sound absorption cavities 211, so as to form a constriction section in the other of the at least two sound absorption cavities 211, so as to better improve the noise reduction effect on the liquid storage container.

[0058] In this embodiment, along the extending direction from the communication port to the sound absorption cavity 211, the flow cross-section of the insertion pipe 22 gradually decreases, so as to better improve the noise reduction effect. Specifically, with such an arrangement, the sound absorption amount for a specific frequency band can be further increased. Alternatively, the insertion pipe 22 has a first communication section and a second communication section that are successively communicated along the extending direction from the communication port to the sound absorption cavity 211, and the flow cross-section of the first communication section is larger than that of the second communication section, so as to better improve the noise reduction effect on the liquid storage container.

[0059] Specifically, at least part of the insertion pipe 22 has at least one stepped section 221, so that at least part of the insertion pipe 22 forms at least two successively connected constriction sections. In this way, it is convenient to better improve the noise reduction effect on the air flow in the inner cavity of the outer shell 10.

[0060] Specifically, along the extending direction from the communication port to the sound absorption cavity 211, the flow cross-sections of the at least two successively connected constriction sections gradually decrease, so as to better improve the noise reduction effect.

[0061] Specifically, the sound absorption structure 20 has at least two sound absorption cavities 211 that are separated from each other and at least two communication ports. The at least two sound absorption cavities 211 are arranged in one-to-one correspondence with the at least two communication ports, and each communication port is communicated with the corresponding sound absorption cavity 211; there are at least two insertion pipes 22, and the at least two insertion pipes 22 are arranged in one-to-one correspondence with the at least two communication ports, and each insertion pipe 22 is inserted at the corresponding communication port. With such a structural arrangement, it is possible to facilitate the noise reduction effect on the air flow in the liquid storage container through the resonance of multiple sound absorption cavities 211, and further improve the noise reduction effect on the liquid storage container.

[0062] In all of the above embodiments, the muffling housing 21 is an annular housing. The outer ring of the muffling housing 21 is connected to the inner wall of the outer housing 10, and the communication port is provided in the inner ring of the muffling housing 21. With such a structural arrangement, it is possible to facilitate the improvement of the installation stability of the muffling housing 21 and facilitate the installation and positioning of the muffling housing 21. Specifically, the inner ring of the muffling housing 21 is spaced from the inner wall of the pipeline 30 to ensure the smooth flow of the air flow in the inner cavity of the outer housing 10.

[0063] Specifically, the inner ring of the muffling housing 21 has a square structure.

[0064] Specifically, the insertion tube 22 is located in the middle of the muffling cavity 211 where the insertion tube 22 is installed. In this way, it is convenient to better achieve muffling and noise reduction through the muffling cavity 211.

[0065] Preferably, the axis of symmetry of the insertion tube 22 in this embodiment coincides with the axis of symmetry of the muffling cavity 211, so as to better achieve the effect of resonance noise reduction and muffling through the muffling cavity 211.

[0066] Preferably, one end of the insertion tube 22 in this embodiment extends into the muffling cavity 211, and the other end of the insertion tube 22 is flush with the outer edge of the muffling housing 10, so as to avoid the situation that the other end of the insertion tube 22 protrudes and interferes with other components in the outer housing 10, and avoid affecting the smooth flow of the air flow in the inner cavity of the outer housing 10.

[0067] Specifically, the height of the muffling housing 21 is h, and 15 mm ≤ h ≤ 40 mm, so as to form a muffling cavity 211 with sufficient space and effectively ensure the muffling effect. Specifically, the height of the muffling housing 21 can be understood as the dimension in the axial extension direction of the liquid storage device.

[0068] Specifically, the inner diameter of the insertion tube 22 is d, and 2.5 mm ≤ d ≤ 5 mm, so as to facilitate the smooth and sufficient entry of the air flow into the muffling cavity 211 and effectively form a necking of the air flow, thereby facilitating the improvement of the muffling effect.

[0069] Specifically, by adopting a plate body assembly with a resonance cavity attached with a plurality of insertion tubes 22, compared with the traditional liquid storage device, the noise in the 350 - 2000 Hz frequency band of the liquid storage device can be effectively reduced. In addition, the structure of the insertion tube 22 with a changing cross-section is further designed, which can greatly improve the muffling amount of the muffling cavity 211 in a specific frequency band.

[0070] Specifically, the transmission loss (muffling amount) of the liquid storage device is calculated according to the following formula:

[0071]

[0072] Among them, ρc represents the acoustic impedance of the fluid medium, P IRe and P IImrespectively represent the real part and the imaginary part of the sound pressure at the inlet, A i represents the inlet cross-sectional area, P ORe and P OIm respectively represent the real part and the imaginary part of the sound pressure at the outlet, A o represents the outlet cross-sectional area.

[0073] According to the above formula, for the liquid storage devices of the plate assemblies of the two different-length intubation tubes 22 in this embodiment (as shown in Fig. 1(a)), the transmission loss is numerically calculated. In this embodiment (corresponding to Figure 5 the existing solution in), the comparison result of the transmission loss of the noise by the liquid storage device with that of the liquid storage device in the prior art (corresponding to Figure 5 the original solution in) is shown in Figure 5 as shown.

[0074] As shown in Fig. 1(a) and Fig. 1(b), Embodiment 1 of the present utility model provides a liquid storage device. The height of the plate assembly of the liquid storage device can be set to 15.0 mm. It is composed of two sound-absorbing cavities 211 provided with intubation tubes 22 (the sound-absorbing cavities 211 in this embodiment can all be understood as resonance cavities). The volumes of the two sound-absorbing cavities 211 are the same. The neck radii of the two intubation tubes 22 are the same and can both be set to 5.0 mm. The neck lengths of the two intubation tubes 22 are different. Among them, the length of one intubation tube 22 can be set to 5.0 mm, and the length of the other intubation tube 22 can be set to 10.0 mm.

[0075] In this embodiment, by setting the liquid storage device as a sound-absorbing structure 20 with multiple neck inner intubation tubes 22 type resonance cavities, effective reduction of broadband noise within the 350 - 2000 Hz broadband is achieved. By setting the liquid storage device as a sound-absorbing structure 20 with resonance cavities of intubation tubes 22 having multiple variable cross-section necks, the sound absorption amount in a specific frequency band is further improved.

[0076] Specifically, by changing the radius of the intubation tube 22 and the inner insertion depth of the intubation tube 22, the acoustic impedance can be changed, thereby achieving an increase in the sound absorption amount in a specific frequency band. By increasing or decreasing the number of partition plates 24 in the sound-absorbing structure 20, and then changing the number and volume of the sound-absorbing cavities 211, an increase in the sound absorption amount in a specific frequency band is achieved. By axially installing multiple sound-absorbing structures 20 inside the liquid storage device, noise reduction within a wider frequency band range can be achieved, and the cavity modal frequency of the liquid storage device can also be changed.

[0077] Specifically, FIG. 1(a) is a cross-sectional view in one direction of a liquid storage device with a silencing chamber 211 attached with two inner insertion tubes 22 provided in the first embodiment, and FIG. 1(b) is a cross-sectional view in another direction of the liquid storage device with the silencing chamber 211 attached with two inner insertion tubes 22 provided in the first embodiment. The silencing structure 20 provided in this embodiment includes a silencing housing 21 sleeved on the inner sidewall of the liquid storage device housing 10. The silencing housing 21 is an annular housing, and the inner ring of the annular housing has a rectangular hollow sleeve. The rectangular hollow sleeve is sleeved on the pipeline 30 and is spaced from the pipeline 30. By providing the rectangular hollow sleeve, the circulation of the refrigerant inside the liquid storage device is allowed. In addition, by arranging the communication port of the resonance chamber on the sidewall of the rectangular hollow sleeve, the overall structure of the silencing structure 20 is improved. In this embodiment, there are two silencing chambers 211 with the same volume and both are provided with insertion tubes 22. The two silencing chambers 211 are separated by a partition plate 24. The partition plate 24 can divide the silencing structure 20 into multiple silencing chambers 211. The existence of multiple silencing chambers 211 helps to achieve a higher silencing amount in a wider frequency band. In this embodiment, the insertion depths of the insertion tubes 22 of the two silencing chambers 211 are different. By setting the insertion tubes 22 with different lengths, the acoustic impedance of the two silencing chambers 211 can be made different, and the resonance frequencies of the silencing chambers 211 are different. That is, at different resonance frequencies, the acoustic energy is dissipated by resonance to achieve efficient noise reduction.

[0078] As shown in FIGS. 2(a) and 2(b), the second embodiment of the present utility model provides a liquid storage device. The main difference between the liquid storage device in this embodiment and the liquid storage device in the first embodiment lies in the different number of silencing chambers 211 of the liquid storage device. Specifically, FIG. 2(a) is a cross-sectional view in one direction of a liquid storage device with a silencing chamber 211 provided with four insertion tubes 22 provided in this embodiment, and FIG. 2(b) is a cross-sectional view in another direction of the liquid storage device composed of a silencing chamber 211 provided with four insertion tubes 22 provided in this embodiment. The silencing housing provided in this embodiment is an annular housing. The outer wall of the annular housing is connected to the inner sidewall of the liquid storage device housing 10. The inner ring of the annular housing forms a rectangular hollow sleeve, and the rectangular hollow sleeve is located in the middle of the silencing housing. By providing the rectangular hollow sleeve, the circulation of the refrigerant inside the liquid storage device is allowed. The silencing structure has four silencing chambers 211 with the same volume and provided with insertion tubes 22. The four silencing chambers 211 are separated by a partition plate 24. The partition plate 24 can divide the silencing structure 20 into multiple silencing chambers 211. The existence of multiple silencing chambers 211 helps to achieve a higher silencing amount in a wider frequency band. Specifically, the insertion depths of the insertion tubes 22 of the four silencing chambers 211 can be made different. By setting the insertion tubes 22 with different insertion depths, their acoustic impedance is different, so that the resonance frequencies of the four silencing chambers 211 are different. That is, at different resonance frequencies, the acoustic energy is dissipated by resonance to achieve efficient noise reduction.

[0079] As shown in FIGS. 3(a) and 3(b), Embodiment 3 of the present utility model provides a liquid reservoir. The main difference between the liquid reservoir in this embodiment and the liquid reservoir in Embodiment 1 lies in the different connection modes of the sound-absorbing cavity 211. Specifically, FIG. 3(a) is a cross-sectional view in one direction of the liquid reservoir with the sound-absorbing cavity 211 having two series-connected insertion tubes 22 provided in this embodiment, and FIG. 3(b) is a cross-sectional view in another direction of the liquid reservoir with the sound-absorbing cavity 211 having two series-connected insertion tubes 22 provided in Embodiment 3 of the present utility model. The sound-absorbing structure provided in this embodiment includes an annular housing for sleeving on the inner sidewall of the outer shell 10. The outer ring of the annular housing is connected to the inner sidewall of the outer shell 10, and the inner ring of the annular housing forms a rectangular hollow sleeve. By providing the rectangular hollow sleeve, the circulation of the refrigerant inside the liquid reservoir is allowed. The sound-absorbing structure 20 has a sound-absorbing cavity 211 with 2 insertion tubes 22 having the same volume (or different volumes, which can be adjusted according to the target noise frequency band during actual use). The two sound-absorbing cavities 211 are separated by a partition 24. One or two connecting tubes 23 are inserted in the middle of one of the partitions 24, so that the two resonance cavities are connected in series, which can further reduce the operating frequency band of the sound-absorbing device.

[0080] As shown in FIGS. 4(a) and 4(b), Embodiment 4 of the present utility model provides a liquid reservoir. The main difference between the liquid reservoir in this embodiment and the liquid reservoir in Embodiment 1 lies in the different cross-sections of the insertion tubes 22. FIG. 4(a) is a cross-sectional view in one direction of the liquid reservoir with resonance cavities having two insertion tubes 22 with cross-sectional changes provided in Embodiment 4 of the present utility model, and FIG. 4(b) is a cross-sectional view in another direction of the liquid reservoir with resonance cavities having two insertion tubes 22 with cross-sectional changes provided in Embodiment 4 of the present utility model. The sound-absorbing structure provided in this embodiment includes an annular housing for sleeving on the inner sidewall of the outer shell 10. The outer ring of the annular housing is connected to the inner sidewall of the outer shell 10, and the inner ring of the annular housing forms a rectangular hollow sleeve. By providing the rectangular hollow sleeve, the circulation of the refrigerant inside the liquid reservoir is allowed. The sound-absorbing structure 20 includes two sound-absorbing cavities 211 provided with insertion tubes 22 having the same volume. The two sound-absorbing cavities 211 are separated by a partition 24. The partition 24 can divide the sound-absorbing housing 21 into multiple sound-absorbing cavities 211. The presence of multiple sound-absorbing cavities 211 helps to achieve a higher sound-absorbing volume in a wider frequency band. Inner insertion tubes 22 with cross-sectional changes are provided on both of the two sound-absorbing cavities 211. The sizes of the two insertion tubes 22 can be set differently, and the radii both decrease along the radial direction of the liquid reservoir in a stepped manner. The velocity of the medium particles in the variable cross-section inner insertion tube 22 changes, causing a siphon effect in the resonance cavity, promoting the enhancement of the thermo-viscous effect, and improving the sound-absorbing performance.

[0081] In all of the above embodiments, the insertion tube 22 can be disposed at any axial position of the muffling housing 21. However, due to the limited height of the muffling housing 21, the length of the insertion tube 22 must be less than the dimension of the muffling housing 21 in the radial direction. In addition, the installation position of the muffling structure 20 can be changed, thereby changing the cavity mode of the liquid reservoir, so that the frequencies at which the peaks and valleys of the transmission loss curve occur change. By arranging a plurality of muffling structures 20 with sound absorption functions in the axial direction of the liquid reservoir, on the one hand, the stiffness of the liquid reservoir can be increased, and its structural and cavity natural mode frequencies can be changed. On the other hand, the sound absorption amount in a specific frequency band can be increased.

[0082] According to Embodiment 5 of the present invention, a compressor is provided, including the liquid reservoir provided in all of the above embodiments.

[0083] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: effectively solving the problem of broadband noise of the above liquid reservoir, increasing the transmission sound absorption amount of the liquid reservoir in the frequency band of 350 - 2000 Hz. In this target frequency band, there is only one valley in the transmission loss curve. The muffling structure with broadband sound absorption function can, on the one hand, increase the stiffness of the liquid reservoir and increase its natural frequency; on the other hand, use the resonance cavity to convert sound energy into kinetic energy and heat energy, dissipate the sound energy, and achieve sound absorption.

[0084] 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.

[0085] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical 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 convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the 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 similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0086] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation terms 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 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. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0087] For the 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 figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the figure 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 for the spatial relative descriptions used here are made accordingly.

[0088] 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 separate 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.

[0089] 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: Housing (10); A sound-absorbing structure (20) is installed in a housing (10). The sound-absorbing structure (20) comprises a sound-absorbing shell (21) and a plug (22) which are connected to each other. The sound-absorbing shell (21) has a sound-absorbing cavity (211) and a connecting port connected to the sound-absorbing cavity (211). The connecting port is connected to the inner cavity of the housing (10). The plug (22) is inserted into the connecting port. At least a portion of the plug (22) extends into the sound-absorbing cavity (211) to form a necked section.

2. The liquid reservoir according to claim 1, characterized in that The muffler structure (20) comprises at least two separately arranged muffler chambers (211) and at least two communicating ports, the at least two muffler chambers (211) are arranged in one-to-one correspondence with the at least two communicating ports, and each communicating port is connected to the corresponding muffler chamber (211); there are at least two inserting tubes (22), the at least two inserting tubes (22) are arranged in one-to-one correspondence with the at least two communicating ports, and each inserting tube (22) is inserted at the corresponding communicating port.

3. The liquid reservoir according to claim 2, characterized in that The at least two insertion tubes (22) are inserted into the corresponding muffler chambers (211) to different depths; and / or, The volumes of at least two separately arranged muffler cavities (211) are equal.

4. The liquid reservoir according to claim 1, characterized in that The muffler housing (21) is provided with an avoidance hole (212), and the liquid storage device further comprises a pipeline (30), and the avoidance hole (212) is provided to avoid the pipeline (30), so that the muffler housing (21) is sleeved on the pipeline (30); Wherein, at least two muffler cavities (211) are arranged circumferentially around the avoidance hole (212), and at least two communication ports are arranged toward the pipeline (30); and / or, There are a plurality of noise reduction structures (20), and the plurality of noise reduction structures (20) are arranged at intervals along the height direction of the pipeline (30); and / or, The distance between the hole side wall (2121) of the avoidance hole (212) and the pipeline (30) is L, and L is ≥ 5 mm.

5. The liquid reservoir according to claim 1, characterized in that The muffler structure (20) comprises at least two muffler chambers (211) which are separated from each other, and the at least two muffler chambers (211) are connected via a connecting port. The muffler structure (20) further comprises a connecting pipe (23), and the connecting pipe (23) is inserted into the connecting port. Wherein, the first part of the connecting pipe (23) is inserted into one of the at least two muffler chambers (211); and / or, The second portion of the connecting pipe (23) is inserted into another one of the at least two muffler chambers (211).

6. The liquid reservoir according to claim 1, characterized in that Along the extension direction from the communication port to the muffler chamber (211), the flow cross section of the insertion tube (22) gradually decreases; or, The insert pipe (22) comprises a first connecting section and a second connecting section which are connected in sequence along an extending direction from the connecting port to the muffler chamber (211), and a flow cross section of the first connecting section is larger than a flow cross section of the second connecting section.

7. The liquid reservoir according to claim 1, characterized in that The cannula (22) has at least one stage (221) so that at least part of the cannula (22) forms at least two necked sections connected in series.

8. The liquid storage device according to claim 7, characterized in that: In the extending direction from the communication port to the muffler chamber (211), the flow cross-sections of at least two consecutively connected necking sections gradually decrease; and / or, The muffler structure (20) comprises at least two separately arranged muffler chambers (211) and at least two communicating ports, the at least two muffler chambers (211) are arranged in one-to-one correspondence with the at least two communicating ports, and each communicating port is connected to the corresponding muffler chamber (211); there are at least two inserting tubes (22), the at least two inserting tubes (22) are arranged in one-to-one correspondence with the at least two communicating ports, and each inserting tube (22) is inserted at the corresponding communicating port.

9. The liquid reservoir according to any one of claims 1 to 8, characterized in that The muffler housing (21) is an annular housing, the outer ring of the muffler housing (21) is connected to the inner wall of the outer shell (10), and the communication port is arranged on the inner ring of the muffler housing (21); and / or, The insertion tube (22) is located in the middle of the muffler chamber (211) in which the insertion tube (22) is installed.

10. The liquid reservoir according to any one of claims 1 to 8, characterized in that The height of the muffler housing (21) is h, 15 mm ≤ h ≤ 40 mm; and / or, The inner diameter of the cannula (22) is d, 2.5 mm ≤ d ≤ 5 mm.

11. A compressor, characterized in that: A liquid reservoir comprising any one of claims 1 to 10.

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