Silencing assembly and refrigeration equipment

Abstract

The utility model discloses a silencing assembly and refrigeration equipment. The silencing assembly comprises a silencing shell and a first air pipe. A containing cavity is defined in the silencing shell, and the silencing shell is provided with a first through hole and a second through hole which communicate with the containing cavity. The first air pipe penetrates through the first through hole and comprises a first pipe section located in the containing cavity, the first pipe section and the second through hole are arranged in a spaced mode, and a first pipe opening communicated with the containing cavity is formed in the end, away from the first through hole, of the first pipe section. In the direction perpendicular to the axis of the first pipe section, the inner sectional area of the first pipe section is S1, the inner sectional area of the containing cavity is S2, and S2 / S1 is larger than or equal to 2. In the direction parallel to the axis of the first pipe section, the extension length of the silencing shell is L1, the extension length of the first pipe section is L2, and L2 / L1 is larger than or equal to 0.2 and smaller than or equal to 0.6. According to the scheme, the silencing frequency band can be effectively widened, the passing frequency of noise is reduced, and the noise reduction effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field especially relates to a sound attenuation assembly and refrigeration equipment. BACKGROUND

[0002] In prior art, with the improvement of the noise reduction measures for the internal pipeline, fan and air duct and other components of the refrigerator, the suction and exhaust noise of the compressor of the refrigerator is highlighted. In related technology, sound absorption cotton or sound attenuation mud is used to reduce the noise of the air pipe of the compressor. Specifically, the sound absorption cotton or sound attenuation mud is wrapped around part of the air pipe, but the sound absorption cotton or sound attenuation mud only has better sound attenuation effect on medium and high frequency noise, and the low frequency noise (for example, below 800 Hz) has longer sound wave, which can partially penetrate the sound absorption cotton and sound attenuation mud, resulting in poor sound attenuation effect. SUMMARY

[0003] The main purpose of the utility model is to provide a sound attenuation assembly and refrigeration equipment, which aims to solve the technical problem of poor sound attenuation effect of the compressor suction and exhaust.

[0004] To achieve the above purpose, the utility model discloses a sound attenuation assembly in the first aspect of embodiment, which comprises:

[0005] The sound attenuation shell defines a cavity inside, and the sound attenuation shell is provided with a first through hole and a second through hole which are communicated with the cavity respectively;

[0006] The first air pipe is arranged in the first through hole, and the first air pipe comprises a first pipe section located in the cavity, the first pipe section is arranged in a spaced manner with the second through hole, and the end of the first pipe section away from the first through hole is provided with a first pipe opening communicated with the cavity;

[0007] Wherein, along the axis direction perpendicular to the first pipe section, the inner cross-sectional area of the first pipe section is S1, the inner cross-sectional area of the cavity is S2, and S2 / S1 is greater than or equal to 2; along the axis direction parallel to the first pipe section, the extension length of the sound attenuation shell is L1, the extension length of the first pipe section is L2, and 0.2≤L2 / L1≤0.6.

[0008] In some embodiments, the first pipe section is provided with a first air hole, the first air hole is communicated with the cavity and the cavity in the first pipe section, and the hole axis of the first air hole is arranged in a crossing manner with the pipe axis of the first pipe section.

[0009] In some embodiments, the sound attenuation assembly comprises a second air pipe, the second air pipe is arranged in the second through hole, the second air pipe comprises a second pipe section located in the cavity, the end of the second pipe section away from the second through hole is provided with a second pipe opening communicated with the cavity, and the second pipe opening is arranged in a spaced and opposite manner with the first pipe opening;

[0010] The inner cross-sectional area of the second pipe section in a direction perpendicular to the axis of the second pipe section is S3, and S2 / S3≥2; the extension length of the second pipe section in a direction parallel to the axis of the second pipe section is L3, and 0.2≤L3 / L1≤0.6.

[0011] In some embodiments, the second pipe section is provided with a second air hole, which communicates the cavity and a lumen in the second pipe section, and the hole axis of the second air hole is arranged transversely to the pipe axis of the second pipe section.

[0012] In some embodiments, the sound attenuation shell comprises a peripheral wall plate, a first end wall plate and a second end wall plate, the first end wall plate and the second end wall plate are connected to opposite sides of the peripheral wall plate, the first end wall plate is provided with the first through hole, and the second end wall plate is provided with the second through hole.

[0013] In some embodiments, the outer peripheral wall surface of the first pipe section and the inner peripheral wall surface of the peripheral wall plate jointly define an annular space;

[0014] and / or,

[0015] The sound attenuation assembly comprises a second air pipe, which is arranged through the second through hole, the second air pipe comprises a second pipe section located in the cavity, an end of the second pipe section away from the second through hole is provided with a second pipe opening communicating with the cavity, the second pipe opening is spaced apart from and oppositely arranged to the first pipe opening, and the outer peripheral wall surface of the second pipe section and the inner peripheral wall surface of the peripheral wall plate jointly define an annular space.

[0016] In some embodiments, the pipe axis of the first air pipe is arranged parallel to the axis of the peripheral wall plate;

[0017] and / or,

[0018] The sound attenuation assembly comprises a second air pipe, which is arranged through the second through hole, the second air pipe comprises a second pipe section located in the cavity, an end of the second pipe section away from the second through hole is provided with a second pipe opening communicating with the cavity, the second pipe opening is spaced apart from and oppositely arranged to the first pipe opening, and the pipe axis of the first air pipe is arranged parallel to the pipe axis of the second air pipe.

[0019] In some embodiments, the extension length of the peripheral wall plate in the direction of the axis of the peripheral wall plate is L1, and L1≥3cm;

[0020] and / or,

[0021] The first pipe section is provided with a first air hole in the peripheral side, the first air hole is communicated with the cavity and the pipe cavity in the first pipe section, the hole axis of the first air hole is crossly arranged with the pipe axis of the first pipe section, and the opening area of the first air hole is S4 in the direction perpendicular to the axis of the peripheral wall plate, wherein 0.1≤S4 / S1≤0.5.

[0022] In some embodiments, the first pipe section is provided with a plurality of the first air holes, and each of the first air holes is arranged at intervals in the peripheral direction of the first pipe section.

[0023] The first pipe section is provided with a plurality of the first air holes, and each of the first air holes is arranged at intervals in the axial direction of the first pipe section.

[0024] The utility model discloses a second aspect embodiment proposes a kind of refrigeration equipment, comprising:

[0025] The silencing assembly as described in the above embodiments; and

[0026] Compressor, is provided with air pipe, the air pipe is communicated with the first air pipe.

[0027] Compared with the prior art, the utility model has the beneficial effects that:

[0028] In the technical scheme of the utility model, the silencing assembly includes a silencing shell and a first air pipe. The silencing shell defines a cavity inside. The silencing shell is provided with a first through hole and a second through hole that are communicated with the cavity, respectively. The first air pipe is arranged through the first through hole, and the first air pipe includes a first pipe section located in the cavity. The first pipe section is arranged at intervals with the second through hole, that is, the first air pipe can be arranged through the inside of the silencing shell. Compared with the scheme in which the first air pipe is only communicated with the silencing shell without being arranged through the inside of the silencing shell, the present scheme can effectively broaden the sound-absorbing frequency band, reduce the passing frequency of noise, and improve the noise reduction effect. Compared with the sound-absorbing scheme in which the air pipe is wrapped with sound-absorbing cotton or sound-absorbing mud, the present scheme can ensure the sound-absorbing effect on low-frequency noise and prevent the high-temperature and high-pressure gas discharged by the compressor from burning the sound-absorbing cotton, thereby facilitating the optimization of the spatial arrangement of the compressor and the heat dissipation treatment.

[0029] Further, the end of the first pipe section away from the first through hole is provided with a first pipe opening communicated with the cavity. In the direction perpendicular to the axis of the first pipe section, the inner cross-sectional area of the first pipe section is S1, and the inner cross-sectional area of the cavity is S2. S2 / S1≥2, that is, the inner cross-sectional area of the cavity is greater than that of the first pipe section, so that the airflow sound wave can be fully reflected and refracted in the cavity, effectively reducing the airflow noise. Moreover, in the direction parallel to the axis of the first pipe section, the extension length of the silencing shell is L1, and the extension length of the first pipe section is L2. 0.2≤L2 / L1≤0.6. When the first pipe section and the silencing shell satisfy the above parameter settings, the airflow noise can be eliminated, and the noise reduction effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0031] Figure 1 It is a schematic view of the refrigeration equipment in an embodiment of the present application, wherein the compressor, the air pipe, the first air pipe, the sound attenuation shell and the second air pipe are shown;

[0032] Figure 2 It is a schematic view of the sound attenuation assembly in an embodiment of the present application;

[0033] Figure 3 It is a sectional view of the sound attenuation assembly in an embodiment of the present application, wherein the cavity, the first through hole, the second through hole, the peripheral wall plate, the first end wall plate, the second end wall plate, the first pipe segment, the first air hole, the second pipe segment and the second air hole are shown;

[0034] Figure 4 It is a schematic view of the sound attenuation assembly in an embodiment of the present application; Figure 3 It is a local enlarged schematic view of position A in the sound attenuation assembly, wherein the first pipe opening and the second pipe opening are shown;

[0035] Figure 5 It is a noise test view when the sound attenuation assembly is not used for sound attenuation for the existing compressor, wherein when the frequency band is 800Hz, the noise is 28.8dB;

[0036] Figure 6 It is a noise test view after the sound attenuation assembly is used for sound attenuation for the compressor in an embodiment of the present application, wherein when the frequency band is 800Hz, the noise is 26.8dB.

[0037] Explanation of reference numerals:

[0038] The refrigeration equipment 1;

[0039] The sound attenuation assembly 10;

[0040] The sound attenuation shell 100; the cavity 110; the first through hole 111; the second through hole 112; the peripheral wall plate 120; the first end wall plate 130; the second end wall plate 140;

[0041] The first air pipe 200; the first pipe segment 210; the first pipe opening 211; the first air hole 212;

[0042] The second air pipe 300; the second pipe segment 310; the second pipe opening 311; the second air hole 312;

[0043] Compressor 20; air pipe 201.

[0044] The purposes, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0046] The applicant finds that, according to the refrigerator user experience research data of the company (company internal data), the radiation noise of the compressor chamber of the refrigerator during operation is at the top of all user interpretation noises. The user interpretation noise refers to a classification of the internal user noise complaints of the company: that is, the product noise complained by the user is measured within the relevant standard range, but needs to be explained and described by the after-sales customer service. And the suction and exhaust sound radiated by the compressor exhaust pipe is an important component of the radiation noise of the compressor chamber.

[0047] In the related art, sound-absorbing cotton or sound-absorbing mud is used to reduce the noise of the air pipe of the compressor. Specifically, the sound-absorbing cotton or sound-absorbing mud is wrapped around part of the air pipe, but the sound-absorbing cotton or sound-absorbing mud only has good sound-absorbing effect on medium and high frequency noise, and the low frequency noise (for example, below 800 Hz) has a long sound wave, which can partially penetrate the sound-absorbing cotton and sound-absorbing mud, resulting in poor sound-absorbing effect.

[0048] Therefore, the utility model provides a sound-absorbing assembly 10 in the first aspect of the embodiment, which has good noise reduction effect. It should be noted that the sound-absorbing assembly 10 can be used in the refrigeration equipment 1, which can be a refrigerator, a freezer or an air conditioner, etc. The embodiments of the present application take the sound-absorbing assembly 10 used in the refrigerator as an example for description. The sound-absorbing assembly 10 of the embodiments of the present application will be introduced below with reference to Figures 1 to 4 Specifically, the sound-absorbing assembly 10 comprises a sound-absorbing shell 100 and a first air pipe 200.

[0049] The sound-absorbing shell 100 is used to reduce airflow noise. It should be noted that the sound-absorbing shell 100 can be the shell of a resistive muffler. The sound-absorbing shell 100 can change the impedance of the sound wave propagation path, utilize the multiple reflection and refraction of the sound wave in the sound-absorbing shell 100 to make different frequency sound waves interfere with each other, so as to offset each other and reduce the noise.

[0050] Reference Figure 3The silencing housing 100 internally defines a cavity 110. The silencing housing 100 has a first through hole 111 and a second through hole 112, both of which communicate with the cavity 110. (Refer to...) Figure 3 In terms of orientation, the through hole on the left side of the muffler housing 100 can be a first through hole 111, and the through hole on the right side of the muffler housing 100 can be a second through hole 112. It should be noted that in some embodiments, the first through hole 111 can be used for air intake, and the second through hole 112 can be used for air exhaust. In other embodiments, the first through hole 111 can be used for air exhaust, and the second through hole 112 can be used for air intake. The specific arrangement of the first through hole 111 and the second through hole 112 can be determined according to the actual situation.

[0051] Reference Figures 1 to 3 The first air pipe 200 provides an airflow channel for gas to enter and exit the silencer shell 100. The first air pipe 200 passes through the first through hole 111. The specific penetration depth of the first air pipe 200 can be determined according to the actual situation. In this embodiment, the first air pipe 200 is completely inserted through the first through hole 111 and partially inserted into the cavity 110 as an example. The section of the first air pipe 200 inserted into the cavity 110 is the first pipe section 210.

[0052] Reference Figure 3 The first pipe section 210 and the second through hole 112 are arranged at intervals, that is, the gas in the first air pipe 200 will first flow to the cavity 110 of the sound-absorbing shell 100 and then flow to the second through hole 112 to achieve noise reduction, which can avoid the situation where the gas in the first air pipe 200 does not flow to the cavity 110 first and flows directly to the second through hole 112.

[0053] It should be noted that the end of the first pipe section 210 opposite to the first through hole 111 is provided with a first pipe opening 211, as shown in the reference. Figure 3 The orientation is such that the first through hole 111 is located on the left side of the silencer shell 100, and the right end of the first pipe section 210 is provided with a first pipe opening 211. The first pipe opening 211 connects to the cavity 110, that is, the gas in the first air pipe 200 can enter and exit the cavity 110 through the first pipe opening 211.

[0054] Reference Figure 3 and Figure 4 The first pipe section 210 is provided with a first vent 212 on its periphery. The first vent 212 can be provided on any side of the first pipe section 210 along the circumference. The first vent 212 connects the cavity 110 and the pipe cavity inside the first pipe section 210, that is, the gas in the pipe cavity inside the first pipe section 210 can enter and exit the cavity 110 through the first vent 212.

[0055] It should be noted that the hole axis of the first gas hole 212 is arranged to cross the pipe axis of the first pipe section 210. In some embodiments, the hole axis of the first gas hole 212 can be arranged to be perpendicular to the pipe axis of the first pipe section 210. In other embodiments, the hole axis of the first gas hole 212 can be arranged to be at other angles other than perpendicular to the pipe axis of the first pipe section 210. Embodiments of the present application are described by way of example with the hole axis of the first gas hole 212 being arranged to be perpendicular to the pipe axis of the first pipe section 210, i.e. the opening direction of the first gas hole 212 can be perpendicular to the extending direction of the first pipe section 210. Referring to Figure 4 In the orientation, the hole axis of the first gas hole 212 can be directed in the up-down direction, and the pipe axis of the first pipe section 210 can be directed in the left-right direction.

[0056] In the technical scheme of the present application, the sound attenuation assembly 10 comprises a sound attenuation shell 100 and a first air pipe 200. The sound attenuation shell 100 defines an accommodating cavity 110 inside. The sound attenuation shell 100 is provided with a first through hole 111 and a second through hole 112, which are respectively communicated with the accommodating cavity 110. The first air pipe 200 is arranged through the first through hole 111, and the first air pipe 200 comprises a first pipe section 210 located in the accommodating cavity 110, and the first pipe section 210 is arranged to be spaced apart from the second through hole 112, i.e. the first air pipe 200 can be arranged to pass through the inside of the sound attenuation shell 100. Compared with the scheme in which the first air pipe is only communicated with the sound attenuation shell and does not pass through the inside of the sound attenuation shell, the present scheme can effectively widen the sound attenuation frequency band, reduce the passing frequency of noise, and improve the noise reduction effect. Compared with the sound attenuation scheme in which the air pipe is wrapped with sound absorption cotton or sound attenuation mud, the present scheme can guarantee the sound attenuation effect on low-frequency noise, and can prevent the high-temperature and high-pressure gas discharged by the compressor 20 from burning the sound absorption cotton, thereby facilitating the optimization of the spatial arrangement of the compressor 20 and the heat dissipation treatment.

[0057] Further, the end of the first pipe section 210 away from the first through hole 111 is provided with a first pipe opening 211 communicated with the accommodating cavity 110. The first pipe section 210 is provided with a first gas hole 212 on the side, and the first gas hole 212 is communicated with the accommodating cavity 110 and the pipe cavity in the first pipe section 210. That is, part of the gas in the pipe cavity of the first pipe section 210 can enter and exit the accommodating cavity 110 through the first pipe opening 211, and another part of the gas can enter and exit the accommodating cavity 110 through the first gas hole 212. The hole axis of the first gas hole 212 is arranged to cross the pipe axis of the first pipe section 210, i.e. the opening direction of the first gas hole 212 crosses the extending direction of the first pipe section 210. Therefore, the air column formed by the first gas hole 212 can effectively reduce noise through vibration friction, thereby guaranteeing the noise reduction effect.

[0058] Referring to Figures 1 to 3In some embodiments, the sound attenuation assembly 10 comprises a second air pipe 300. The second air pipe 300 can provide a gas flow channel for the gas to enter or exit the sound attenuation shell 100. The second air pipe 300 is arranged in the second through hole 112, and the specific arrangement depth of the second air pipe 300 can be determined according to actual conditions. In the embodiments of the present application, the second air pipe 300 is arranged to completely pass through the second through hole 112 and partially arranged in the cavity 110. The pipe segment of the second air pipe 300 arranged in the cavity 110 is a second pipe segment 310.

[0059] The end of the second pipe segment 310 away from the second through hole 112 is provided with a second pipe opening 311. Referring to Figure 3 the orientation, the second through hole 112 is located on the right side of the sound attenuation shell 100, and the end of the left side of the second pipe segment 310 is provided with the second pipe opening 311. The second pipe opening 311 communicates with the cavity 110, that is, the gas in the cavity 110 can enter or exit the cavity 110 through the second pipe opening 311. The second pipe opening 311 is spaced apart from and arranged opposite to the first pipe opening 211. Referring to Figure 4 the orientation, the second pipe opening 311 is spaced apart from and arranged opposite to the first pipe opening 211 along the left-right direction, that is, the gas flowing out of the first pipe opening 211 can first enter the cavity 110, and then enter the second pipe opening 311 from the cavity 110 to achieve sound attenuation and noise reduction, and because the first pipe opening 211 is opposite to the second pipe opening 311, the gas can smoothly flow in and out of the sound attenuation shell 100.

[0060] It should be noted that in some embodiments, the structure of the second air pipe 300 can be the same as or different from that of the first air pipe 200. In the embodiments of the present application, the structure of the first air pipe 200 is the same as that of the second air pipe 300. Specifically, the first air pipe 200 and the second air pipe 300 are both straight pipe segments. In other embodiments, the extension length of the second pipe segment 310 can be the same as, greater than, or less than the extension length of the first pipe segment 210. In the embodiments of the present application, the extension length of the second pipe segment 310 is less than that of the first pipe segment 210.

[0061] In the present scheme, the second air pipe 300 is arranged in the second through hole 112, and the second pipe segment 310 is arranged in the cavity 110 of the sound attenuation shell 100. Compared with the scheme in which the second air pipe only communicates with the sound attenuation shell and is not arranged in the interior of the sound attenuation shell, the present scheme can further widen the sound attenuation frequency band, reduce the passing frequency of noise, and improve the noise reduction effect.

[0062] Referring to Figure 3 and Figure 4In some embodiments, the second pipe segment 310 is provided with a second air hole 312 on the circumferential side of the second pipe segment 310. The second air hole 312 can be arranged on any circumferential side of the second pipe segment 310. The second air hole 312 is in communication with the pipe cavity in the second pipe segment 310 and the cavity 110 of the sound attenuation shell 100, i.e. the gas in the cavity 110 can enter or exit the cavity 110 through the second air hole 312.

[0063] It should be noted that the hole axis of the second air hole 312 is arranged to intersect the pipe axis of the second pipe segment 310. In some embodiments, the hole axis of the second air hole 312 can be arranged to be perpendicular to the pipe axis of the second pipe segment 310. In other embodiments, the hole axis of the second air hole 312 can be arranged to be at other angles to the pipe axis of the second pipe segment 310. The embodiments of the present application are described by way of example with the hole axis of the second air hole 312 being arranged to be perpendicular to the pipe axis of the second pipe segment 310, i.e. the opening direction of the second air hole 312 can be perpendicular to the extending direction of the second pipe segment 310. Referring to Figure 4 In this way, the hole axis of the second air hole 312 can be directed in the up-down direction, and the pipe axis of the second pipe segment 310 can be directed in the left-right direction.

[0064] The circumferential side of the second pipe segment 310 of the present scheme is provided with the second air hole 312 in communication with the cavity 110 and the pipe cavity of the second pipe segment 310, and the second pipe opening 311 is in communication with the cavity 110, i.e. part of the gas in the cavity 110 can enter or exit the pipe cavity of the second pipe segment 310 through the second pipe opening 311, and another part of the gas can enter or exit the pipe cavity of the second pipe segment 310 through the second air hole 312. Moreover, the opening direction of the second air hole 312 can intersect the extending direction of the second pipe segment 310, i.e. the air column formed by the second air hole 312 can effectively reduce noise through vibration friction, thereby ensuring the noise reduction effect.

[0065] Referring to Figure 1 and Figure 3 The relative arrangement of the first air pipe 200 and the second air pipe 300 will be described below. The pipe axis of the first air pipe 200 is arranged to be parallel to the pipe axis of the second air pipe 300. Specifically, in some embodiments, the pipe axis of the first air pipe 200 can be arranged to be parallel and spaced apart from the pipe axis of the second air pipe 300, i.e. the first air pipe 200 can be arranged to be opposite and misaligned with the second air pipe 300, and the present scheme enables the cavity 110 to sufficiently reflect and refract the airflow sound waves to achieve noise reduction. In other embodiments, the pipe axis of the first air pipe 200 can be arranged to coincide with the pipe axis of the second air pipe 300, i.e. the first air pipe 200 can be arranged to be directly opposite the second air pipe 300, and the present scheme enables the airflow to smoothly flow between the first air pipe 200, the sound attenuation shell 100 and the second air pipe 300. Figure 3

[0066] Referring to Figure 2 and Figure 3 ​, the specific structure of the sound attenuation shell 100 is introduced. In some embodiments, the sound attenuation shell 100 can be cylindrical, and specifically, the sound attenuation shell 100 includes a peripheral wall plate 120, a first end wall plate 130, and a second end wall plate 140. The first end wall plate 130 and the second end wall plate 140 are connected to opposite sides of the peripheral wall plate 120. Referring to Figure 3 the first end wall plate 130 can be the left wall plate of the sound attenuation shell 100, and the second end wall plate 140 can be the right wall plate of the sound attenuation shell 100. It can be understood that the peripheral wall plate 120 can jointly define the cavity 110 with the first end wall plate 130 and the second end wall plate 140. The first end wall plate 130 is provided with a first through hole 111, and the second end wall plate 140 is provided with a second through hole 112.

[0067] The first through hole 111 of the present scheme is arranged on the first end wall plate 130 of the sound attenuation shell 100, and the second through hole 112 is arranged on the second end wall plate 140 of the sound attenuation shell 100, that is, the first air pipe 200 can pass through the first end wall plate 130 to the cavity 110, and the second air pipe 300 can pass through the second end wall plate 140 to the cavity 110. Therefore, the present scheme can fully utilize the internal cavity 110 of the sound attenuation shell 100 and guarantee the noise reduction effect on the airflow.

[0068] It should be noted that in some embodiments, the first air pipe 200 can be integrally connected with the first end wall plate 130, and the second air pipe 300 can be integrally connected with the second end wall plate 140. In other embodiments, the first air pipe 200 can be detachably connected with the first end wall plate 130, and the second air pipe 300 can be detachably connected with the second end wall plate 140. The specific connection of the first air pipe 200 and the second air pipe 300 with the sound attenuation shell 100 can be determined according to actual conditions.

[0069] Referring to Figure 3 , the specific passing position of the first air pipe 200 on the sound attenuation shell 100 is introduced. In some embodiments, the outer peripheral wall surface of the first pipe section 210 can jointly define an annular space with the inner peripheral wall surface of the peripheral wall plate 120, that is, the first pipe section 210 is arranged in a spaced manner along the peripheral wall plate 120. The present scheme can avoid the situation that the inner wall of the peripheral wall plate 120 interferes or blocks the first air hole 212, so that the first air hole 212 can reliably inhale and exhale air, and the stability of noise reduction is improved.

[0070] Referring to Figure 3 , the specific passing position of the second air pipe 300 on the sound attenuation shell 100 is introduced. In some embodiments, the outer peripheral wall surface of the second pipe section 310 can jointly define an annular space with the inner peripheral wall surface of the peripheral wall plate 120, that is, the second pipe section 310 is arranged in a spaced manner along the peripheral wall plate 120. The present scheme can avoid the situation that the inner wall of the peripheral wall plate 120 interferes or blocks the second air hole 312, so that the second air hole 312 can reliably inhale and exhale air, and the stability of noise reduction is improved.

[0071] With reference to Figure 3 , the specific relative arrangement of the first air pipe 200 and the sound attenuation shell 100 is described below. In some embodiments, the pipe axis of the first air pipe 200 can be parallel to the axis of the peripheral wall plate 120. Specifically, in some embodiments, the pipe axis of the first air pipe 200 can be arranged in parallel and spaced apart from the axis of the peripheral wall plate 120, i.e., the first air pipe 200 can be arranged in staggered opposition to the peripheral wall plate 120. In other embodiments, the pipe axis of the first air pipe 200 can be arranged coincident with the axis of the peripheral wall plate 120, i.e., the first air pipe 200 can be arranged in direct opposition to the peripheral wall plate 120. The embodiments of the present application are described by way of example with the first air pipe 200 arranged in direct opposition to the peripheral wall plate 120. This scheme can enable the sound waves of the airflow in the first air pipe 200 to be fully reflected and refracted in the cavity 110, thereby improving the noise reduction effect.

[0072] With reference to Figure 3 , the specific relative arrangement of the second air pipe 300 and the sound attenuation shell 100 is described below. In some embodiments, the pipe axis of the second air pipe 300 can be parallel to the axis of the peripheral wall plate 120. Specifically, in some embodiments, the pipe axis of the second air pipe 300 can be arranged in parallel and spaced apart from the axis of the peripheral wall plate 120, i.e., the second air pipe 300 can be arranged in staggered opposition to the peripheral wall plate 120. In other embodiments, the pipe axis of the second air pipe 300 can be arranged coincident with the axis of the peripheral wall plate 120, i.e., the second air pipe 300 can be arranged in direct opposition to the peripheral wall plate 120. The embodiments of the present application are described by way of example with the second air pipe 300 arranged in direct opposition to the peripheral wall plate 120. This scheme can enable the airflow in the second air pipe 300 to be fully reflected and refracted in the cavity 110, thereby improving the noise reduction effect.

[0073] With reference to Figure 3 and Figure 4 , the specific arrangement of the first air hole 212 is described below. In some embodiments, the first pipe section 210 is provided with a plurality of first air holes 212, and each first air hole 212 can be arranged in spaced apart relation around the circumference of the first pipe section 210. It can be understood that the spacing between adjacent two first air holes 212 can be uniform or non-uniform. In other embodiments, the first pipe section 210 is provided with a plurality of first air holes 212, and each first air hole 212 can be arranged in spaced apart relation along the axis of the first pipe section 210, with reference to Figure 3 , each first air hole 212 can be arranged in spaced apart relation in the left-right direction. The specific number of first air holes 212 can be determined according to actual conditions. In the present scheme, the first pipe section 210 is provided with a plurality of first air holes 212, and therefore the plurality of air columns formed by the first pipe section 210 can effectively reduce noise through vibrational friction, thereby improving the noise reduction effect.

[0074] It should be noted that in other embodiments, the first air hole 212 can also be an arc-shaped hole, which can be arranged around the peripheral wall of the first pipe section 210, and the specific circumferential angle of the arc-shaped hole can be determined according to actual conditions.

[0075] With reference to Figure 3 and Figure 4 , the specific arrangement of the second air hole 312 will be described below. In some embodiments, the second pipe section 310 is provided with a plurality of second air holes 312, and each second air hole 312 can be arranged at intervals in the circumferential direction of the second pipe section 310. It can be understood that the interval between two adjacent second air holes 312 can be uniform or non-uniform. In other embodiments, the second pipe section 310 is provided with a plurality of second air holes 312, and each second air hole 312 can be arranged at intervals in the axial direction of the second pipe section 310. With reference to Figure 3 , each second air hole 312 can be arranged at intervals in the left-right direction. The specific number of second air holes 312 can be determined according to actual conditions. The second pipe section 310 of the present scheme is provided with a plurality of second air holes 312, so that the plurality of air columns formed by the second pipe section 310 can effectively reduce noise through vibration friction, thereby improving the noise reduction effect.

[0076] The relative size arrangement between the first pipe section 210 and the cavity 110 of the sound attenuation shell 100 will be described below. In some embodiments, along the axis direction perpendicular to the peripheral wall plate 120, with reference to Figure 1 , that is, in the up-down direction, the inner cross-sectional area of the first pipe section 210 is S1, and the inner cross-sectional area of the cavity 110 is S2. Wherein, S2 / S1≥2. Exemplarily, S2 / S1 can be 2, 2.5, 3, 4 or 5, etc. The present embodiment takes S2 / S1=3 as an example for description. The inner cross-sectional area of the cavity 110 of the sound attenuation shell 100 is larger than the inner cross-sectional area of the first pipe section 210, that is, the airflow sound wave can be fully reflected and refracted in the cavity 110, thereby effectively reducing the exhaust noise. It can be understood that the size of the non-first pipe section part of the first air pipe 200 can be the same as the size of the first pipe section 210. The size of the air pipe 201 of the compressor 20 can also be the same as the size of the first pipe section 210.

[0077] The relative size arrangement between the second pipe section 310 and the cavity 110 of the sound attenuation shell 100 will be described below. In some embodiments, along the axis direction perpendicular to the second pipe section 310, with reference to Figure 1The inner cross-sectional area of the second pipe section 310 is S3, and the inner cross-sectional area of the cavity 110 is S2 in the orientation, i.e., in the up-down direction. S2 / S3≥2. For example, S2 / S3 can be 2, 2.5, 3, 4, or 5, etc. The embodiments of the present application take S2 / S3=3 as an example for illustration. The inner cross-sectional area of the cavity 110 of the sound attenuation shell 100 is greater than the inner cross-sectional area of the second pipe section 310, i.e., the sound waves of the airflow can be fully reflected and refracted in the cavity 110, effectively reducing the exhaust noise. It can be understood that the size of the non-second pipe section 310 of the second air pipe 300 can be the same as the size of the first pipe section 210. It should be noted that the size of the second air pipe 300 can also be equal to the size of the first air pipe 200.

[0078] Referring to Figure 1 The specific arrangement of the peripheral wall plate 120 will be described below. In some embodiments, the extension length of the peripheral wall plate 120 along the axis direction of the peripheral wall plate 120 is L1. L1≥3cm. For example, L1 can be 3cm, 3.5cm, 4cm, 4.4cm, 5cm, 6cm, or 7cm, etc. The embodiments of the present application take L1=5cm as an example for illustration. This scheme can not only avoid the situation that the size of the sound attenuation shell 100 is too large to affect the arrangement of the compressor 20, but also avoid the situation that the size of the sound attenuation shell 100 is too small to cause the noise reduction to be not obvious.

[0079] The relative size of the first air hole 212 and the first pipe section 210 will be described below. In some embodiments, the inner cross-sectional area of the first pipe section 210 along the direction perpendicular to the axis of the peripheral wall plate 120 is S1, i.e., the opening area of the first pipe port 211 is S1, and the opening area of the first air hole 212 is S4. 0.1≤S4 / S1≤0.5. For example, S4 / S1 can be 0.1, 0.2, 0.25, 0.3, 0.4, or 0.5, etc. The embodiments of the present application take S4 / S1=0.2 as an example for illustration. The first air hole 212 and the first pipe section 210 of the present scheme adopt the above size arrangement, which can not only make the airflow flow smoothly, but also guarantee the noise reduction effect of the airflow.

[0080] Referring to Figure 1 The specific extension arrangement of the first pipe section 210 will be described below. In some embodiments, the extension length of the peripheral wall plate 120 along the axis direction of the peripheral wall plate 120 is L1, and the extension length of the first pipe section 210 is L2. 0.2≤L2 / L1≤0.6. For example, L2 / L1 can be 0.2, 0.25, 0.3, 0.4, 0.5, or 0.6, etc. The embodiments of the present application take L2 / L1=0.5 as an example for illustration.

[0081] Referring to Figure 1The specific extension of the second pipe section 310 is described below. In some embodiments, the extension length of the peripheral wall plate 120 is L1, and the extension length of the second pipe section 310 is L3 along the axis direction of the peripheral wall plate 120. Wherein, 0.2≤L3 / L1≤0.6. Exemplarily, L3 / L1 can be 0.2, 0.25, 0.3, 0.4, 0.5 or 0.6, etc. The embodiments of the present application take L3 / L1 as 0.25 for example.

[0082] It should be noted that in some embodiments, the sound attenuation amount of a general expansion muffler (i.e. the cross-sectional area of the cavity 110 in the sound attenuation shell 100 is larger than that of the vent pipe 201) can be calculated by the following formula:

[0083]

[0084] Wherein, m is the expansion ratio, which is defined as the ratio of the cross-sectional area of the internal cavity 110 flow space of the resistive muffler to the cross-sectional area of the internal flow space of the vent pipe 201 of the compressor 20, i.e. m=S2 / S1; k is the wave number, k=2πf / c, c is the sound speed. Exemplarily, the extension length of the sound attenuation shell 100 can be 0.05m, and the expansion ratio m=3. According to Figure 5 and Figure 6 , the sound attenuation of the muffler of the present embodiment can reduce 2.13dB for the air sound of the compressor 800Hz vent pipe 201. When kl=nπ, i.e. f=nc / 2l (n=1, 2, 3…), the sound attenuation amount of the muffler is 0, and the frequency of f at this time is the pass frequency. Therefore, in some embodiments, in order to widen the sound attenuation range of the muffler, L2 / L1 can be taken as 0.5, and L3 / L1 can be taken as 0.25, i.e. the frequencies of odd and even numbers of n can have certain sound attenuation effect respectively.

[0085] Referring to Figure 1The utility model discloses a second aspect embodiment proposes a kind of refrigeration equipment 1, and refrigeration equipment 1 includes the silencing subassembly 10 of above-mentioned embodiment with compressor 20.Compressor 20 is equipped with vent pipe 201, vent pipe 201 can be communicated first gas pipe 200.It needs to be explained, vent pipe 201 can be exhaust pipe, can also be for suction pipe, and the application embodiment is explained with vent pipe 201 as exhaust pipe as example.This scheme can effectively broaden the sound deadening band of silencing subassembly 10, reduce the passing frequency of noise, improve the effect of noise reduction.Compared with the sound-absorbing cotton or silencing mud wrapped vent pipe sound deadening scheme, this scheme can guarantee the sound deadening effect of low-frequency noise, and can prevent the high-temperature, high-pressure gas discharged by compressor 20 from burning sound-absorbing cotton, facilitate optimizing the space arrangement of compressor 20 and carrying out heat dissipation treatment.Further, part of gas in the tubular cavity of first pipe section 210 can enter and exit container cavity 110 by first pipe opening 211, and another part of gas can enter and exit container cavity 110 by first gas hole 212.Because the hole axis of first gas hole 212 and the tube axis of first pipe section 210 are cross arrangement, i.e., the opening direction of first gas hole 212 and the arrangement direction of first pipe section 210 cross.Therefore, the air column formed by first gas hole 212 can effectively reduce noise by vibration friction, guarantee the effect of noise reduction.In summary, on the basis of guaranteeing the refrigerant flow and service life of refrigeration equipment 1, this scheme can effectively reduce the radiation noise of compressor 20 warehouse, improve user experience.

[0086] It needs to be explained that if the embodiment of the utility model has directionality indication (such as up, down, left, right, front, back, etc.), then the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, then the directionality indication also changes accordingly.

[0087] In addition, if the embodiment of the utility model has description of "first", "second" and the like, then the description of "first", "second" and the like is only for description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the whole text, it means that the three parallel schemes include "A and / or B", including A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that ordinary skilled in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0088] The above are only preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent structural transformation made by using the present application specification and drawing contents, or directly / indirectly applied in other related technical fields are included in the patent protection range of the present application.

Claims

1. A sound attenuation assembly, characterized by, The muffling assembly comprises: a muffling shell defining an accommodating cavity inside, the muffling shell being provided with a first through hole and a second through hole respectively communicating with the accommodating cavity; a first air pipe penetrating through the first through hole, the first air pipe comprising a first pipe section located in the accommodating cavity, the first pipe section being arranged in a spaced manner with the second through hole, and an end of the first pipe section away from the first through hole being provided with a first pipe opening communicating with the accommodating cavity; wherein, along a direction perpendicular to an axis of the first pipe section, an inner cross-sectional area of the first pipe section is S1, and an inner cross-sectional area of the accommodating cavity is S2, S2 / S1≥2; along a direction parallel to the axis of the first pipe section, an extension length of the muffling shell is L1, and an extension length of the first pipe section is L2, 0.2≤L2 / L1≤0.

6.

2. The muffling assembly according to claim 1, wherein a first air hole is arranged on a peripheral side of the first pipe section, the first air hole communicating with the accommodating cavity and a pipe cavity in the first pipe section, and a hole axis of the first air hole is arranged in a crossing manner with a pipe axis of the first pipe section.

3. The sound attenuation assembly of claim 1, wherein, Further comprising: a second air pipe penetrating through the second through hole, the second air pipe comprising a second pipe section located in the accommodating cavity, an end of the second pipe section away from the second through hole being provided with a second pipe opening communicating with the accommodating cavity, and the second pipe opening being arranged in a spaced and opposite manner with the first pipe opening; wherein, along a direction perpendicular to an axis of the second pipe section, an inner cross-sectional area of the second pipe section is S3, S2 / S3≥2; along a direction parallel to the axis of the second pipe section, an extension length of the second pipe section is L3, 0.2≤L3 / L1≤0.

6.

4. The muffling assembly according to claim 3, wherein a second air hole is arranged on a peripheral side of the second pipe section, the second air hole communicating with the accommodating cavity and a pipe cavity in the second pipe section, and a hole axis of the second air hole is arranged in a crossing manner with a pipe axis of the second pipe section.

5. The muffling assembly according to claim 1, wherein the muffling shell comprises a peripheral wall plate, a first end wall plate and a second end wall plate, the first end wall plate and the second end wall plate being connected to opposite sides of the peripheral wall plate, the first end wall plate being provided with the first through hole, and the second end wall plate being provided with the second through hole.

6. The muffling assembly according to claim 5, wherein an outer peripheral wall surface of the first pipe section and an inner peripheral wall surface of the peripheral wall plate jointly define an annular space; and / or, the muffling assembly comprises a second air pipe penetrating through the second through hole, the second air pipe comprising a second pipe section located in the accommodating cavity, an end of the second pipe section away from the second through hole being provided with a second pipe opening communicating with the accommodating cavity, and the second pipe opening being arranged in a spaced and opposite manner with the first pipe opening, and an outer peripheral wall surface of the second pipe section and an inner peripheral wall surface of the peripheral wall plate jointly defining an annular space.

7. The muffling assembly according to claim 5, wherein a pipe axis of the first air pipe is arranged in a parallel manner with an axis of the peripheral wall plate; and / or, The sound attenuation assembly comprises a second air pipe, the second air pipe is arranged in the second through hole, the second air pipe comprises a second pipe section in the cavity, an end of the second pipe section away from the second through hole is provided with a second pipe opening communicating with the cavity, the second pipe opening is spaced apart from and oppositely arranged with the first pipe opening, and the pipe axis of the first air pipe is arranged in parallel with the pipe axis of the second air pipe.

8. The sound attenuation assembly of claim 5, wherein, an extension length of the peripheral wall plate along the axial direction of the peripheral wall plate is L1, and L1 is greater than or equal to 3 cm; and / or, the first pipe section is provided with a first air hole on the peripheral side of the first pipe section, the first air hole communicates with the cavity and a pipe cavity in the first pipe section, and a hole axis of the first air hole is arranged in cross with the pipe axis of the first pipe section; an opening area of the first air hole along a direction perpendicular to the axial direction of the peripheral wall plate is S4, and 0.1≤S4 / S1≤0.

5.

9. The sound attenuation assembly of claim 2, wherein, the first pipe section is provided with a plurality of first air holes, and each first air hole is arranged in spaced apart along a circumferential direction of the first pipe section; and / or, the first pipe section is provided with a plurality of first air holes, and each first air hole is arranged in spaced apart along an axial direction of the first pipe section.

10. A refrigeration appliance characterised in that, including: the sound attenuation assembly of any one of claims 1-9; and a compressor provided with an air pipe, the air pipe communicates with the first air pipe. ​

Images