Air intake muffler, compressor, and electrical equipment

Abstract

The present application provides an air intake muffler, a compressor, and an electrical device. The air intake muffler includes a muffler cavity, a communication flow path, an air inlet pipe, and an air outlet pipe. The muffler cavity includes a first cavity and a second cavity. The communication flow path communicates the first cavity and the second cavity. The communication flow path has a flow path inlet and a flow path outlet. The air inlet pipe has a first inlet and a first outlet. The air outlet pipe has a second inlet and a second outlet. The first outlet is arranged opposite to and spaced apart from the flow path inlet. The flow path outlet is arranged opposite to and spaced apart from the second inlet. The air intake muffler provided by the present application arranges the first outlet of the air inlet pipe opposite to the flow path inlet of the communication flow path, and arranges the flow path outlet of the communication flow path opposite to the second inlet of the air outlet pipe, thereby reducing the resistance of the air flow from the air inlet pipe to the air outlet pipe through the communication flow path and improving the air intake efficiency. However, by arranging the first outlet and the flow path inlet spaced apart from each other, and arranging the flow path outlet and the second inlet spaced apart from each other, the noise reduction performance of the air intake muffler is improved.

Description

Technical Field

[0001] This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of China on August 31, 2022, with application number "202211053598.1" and application title "Air Inlet Muffler, Compressor and Electrical Equipment", the entire content of which is incorporated herein by reference.

[0002] This application belongs to the field of compressor technology, and more specifically, relates to an air inlet muffler, a compressor and an electrical equipment.

Background Art

[0003] A refrigerator is an essential household appliance in daily life, and people's requirements for its performance are also increasing. In addition to the important refrigeration capacity of the refrigerator, its comfort is also one of the important indicators. As an important parameter for measuring comfort, the noise value has also attracted much attention.

[0004] In related technologies, there are generally two types of internal pipe structures of the air inlet muffler of a compressor. The first is that the outlet and the inlet between the internal pipe structures are not connected to each other. In such a structure, the continuity of the air flow is poor, and the resistance of the air flow is large, so the air inlet efficiency is reduced, which in turn leads to a reduction in the compressor efficiency. The second is that the outlet and the inlet between the internal pipe structures are connected to each other. In such a structure, the continuity of the air flow is good and the resistance of the air flow is small, but the noise reduction performance is poor, so the noise of the compressor becomes large.

Summary of the Invention

Problems to be Solved by the Invention

[0005] An embodiment of this application aims to provide an air inlet muffler, a compressor and an electrical equipment for solving the problem of the prior art that it is difficult to achieve both the noise reduction performance and the air inlet efficiency of the air inlet muffler of a compressor.

Means for Solving the Problems

[0006] To achieve the above object, an air intake muffler provided as a technical solution adopted in an embodiment of the present application includes a muffler cavity, an air inlet pipe, and an air outlet pipe. The muffler cavity includes a first cavity and a second cavity. The air intake muffler further includes a communication flow path that communicates the first cavity and the second cavity. The communication flow path has a flow path inlet that enters the first cavity and a flow path outlet that communicates with the second cavity. The air inlet pipe has a first inlet located outside the first cavity and a first outlet that enters the first cavity. The air outlet pipe has a second inlet that communicates with the second cavity and a second outlet located outside the second cavity. The first outlet is disposed opposite to and spaced apart from the flow path inlet. The flow path outlet is disposed opposite to and spaced apart from the second inlet.

[0007] In an optional embodiment, the air intake muffler further includes a muffler duct. Muffler holes are provided in the side wall of the muffler duct. The muffler duct is provided between the flow path outlet and the second inlet.

[0008] In an optional embodiment, one end of the muffler duct is connected to the flow path outlet, and the other end of the muffler duct is disposed spaced apart from the second inlet.

[0009] In an optional embodiment, the distance between the other end of the muffler duct and the second inlet is in the range of 1 / 2 to 1 / 4 of the length of the second cavity along the axial direction of the muffler duct.

[0010] In an optional embodiment, the axial directions of the flow path inlet, the flow path outlet, the first outlet, and the second inlet are in the same plane.

[0011] In an optional embodiment, the distance between the first outlet and the flow path inlet is in the range of 1 to 3 mm.

[0012] In an optional embodiment, a filter screen is attached to the outlet of the flow path.

[0013] In an optional embodiment, the first outlet is located on one side in the axial direction of the air inlet pipe, and the inlet of the flow path is located on the side facing the air inlet pipe of the communication flow path.

[0014] In an optional embodiment, the air intake muffler includes a casing having the muffler cavity, and a partition wall for partitioning the muffler cavity into the first cavity and the second cavity is provided in the casing. An insertion pipe for forming the communication flow path is provided in the partition wall, and the air inlet pipe and the air outlet pipe are respectively connected to the casing.

[0015] In an optional embodiment, the first cavity is located below the second cavity, and the air intake muffler further includes a first oil leakage flow path for communicating the first cavity and the second cavity, and a second oil leakage flow path is provided at the bottom of the first cavity.

[0016] Another object of the embodiment of the present application is to provide a compressor including the air intake muffler described in the above embodiment.

[0017] A further object of the embodiment of the present application is to provide an electric device including the compressor described in the above embodiment.

Advantages of the Invention

[0018] The beneficial effects of the air intake muffler provided by the embodiments of the present application are as follows. Compared with the prior art, the air intake muffler of the embodiments of the present application arranges a communication flow path to communicate the first cavity and the second cavity, allows the first outlet of the air inlet pipe to enter the first cavity, and is arranged opposite to the flow path inlet of the communication flow path, and arranges the flow path outlet of the communication flow path opposite to the second inlet of the air outlet pipe, thereby reducing the resistance of the airflow from the air inlet pipe to the air outlet pipe through the communication flow path and improving the air intake efficiency. At the same time, the first outlet of the air inlet pipe and the flow path inlet of the communication flow path are arranged at an interval, so that the first cavity can effectively silence the airflow from the air inlet pipe to the communication flow path and reduce the noise. Furthermore, the flow path outlet of the communication flow path and the second inlet of the air outlet pipe are arranged at an interval, so that the second cavity can effectively silence the airflow from the communication flow path to the air outlet pipe and reduce the noise. Thereby, the noise reduction performance of the air intake muffler is improved, and thus the air intake efficiency and the noise reduction performance are made compatible.

[0019] The beneficial effects of the compressor provided by the embodiments of the present application are as follows. Compared with the prior art, since the compressor of the embodiments of the present application uses the above air intake muffler, the air intake resistance is small, the air intake efficiency is high, and the noise is small.

[0020] The beneficial effects of the electrical equipment provided by the embodiments of the present application are as follows. Compared with the prior art, since the electrical equipment of the embodiments of the present application uses the above compressor, it has the technical effects of the above compressor, which will not be repeated here.

Brief Description of the Drawings

[0021] To more clearly explain the technical solutions in the embodiments of the present application, the drawings necessary for describing the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

[0022]

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Embodiments for Carrying Out the Invention

[0023] In order to more clearly illustrate the technical problems, technical solutions and beneficial effects solved by the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used for explaining the present application and are not used for limiting the present application.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly present on the other element or indirectly present on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0025] In the description of the present application, unless explicitly and specifically limited, "a plurality" means two or more. Unless explicitly and specifically limited, "some" means one or more. The terms "first" and "second" are used only for the purpose of description and are not to be construed as indicating relative importance or implying or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. The orientation or positional relationship indicated by terms such as "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation and positional relationship shown in the drawings and is only for the convenience of explaining the present application and simplifying the explanation, and does not indicate or imply that the device or element mentioned must have a specific particular orientation and must be constructed and operated in a specific orientation. Therefore, it cannot be construed as limiting the present application.

[0026] In the description of the present application, unless specifically described and limited, the terms "attachment", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a removable connection, or an integral connection, and can also be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and can also be a communication inside two elements or an interaction relationship between two elements. It should be noted that those skilled in the art can understand the specific meaning of the above terms in the present application according to specific situations.

[0027] References to "one embodiment", "some embodiments", or "an embodiment" in the specification of the present application mean that the specific features, structures, or characteristics described in connection with that embodiment are included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment", "in some embodiments", "in some other embodiments", "in some other alternative embodiments", etc., which appear at different places in this specification, do not necessarily all refer to the same embodiment, and unless otherwise specified, mean "one or more but not all". Further, in one or more embodiments, the specific features, structures, or characteristics can be combined in any suitable manner.

[0028] Referring to FIGS. 4, 5 and 9, the air intake muffler 100 provided by the present application will be described. The air intake muffler 100 includes a muffler cavity 101, a communication flow path 41, an air inlet pipe 20 and an air outlet pipe 30.

[0029] The muffler cavity 101 includes a first cavity 1011 and a second cavity 1012. The communication flow path 41 communicates the first cavity 1011 with the second cavity 1012. The air inlet pipe 20 is connected to the first cavity 1011, and the air outlet pipe 30 is connected to the second cavity 1012. Thus, the air flow can enter the first cavity 1011 from the air inlet pipe 20, enter the second cavity 1012 through the communication flow path 41, and flow out from the air outlet pipe 30.

[0030] The communication flow path 41 has an inlet and an outlet. The inlet of the communication flow path 41 is a flow path inlet 411, and the outlet of the communication flow path 41 is a flow path outlet 412. The flow path inlet 411 enters the first cavity 1011 and communicates with the first cavity 1011. The flow path outlet 412 is connected to the second cavity 1012 and communicates with the second cavity 1012, thereby communicating the first cavity 1011 with the second cavity 1012.

[0031] The air inlet pipe 20 has an inlet and an outlet. The inlet of the air inlet pipe 20 is the first inlet 211, and the outlet of the air inlet pipe 20 is the first outlet 212. The first outlet 212 enters the first cavity 1011 and communicates with the first cavity 1011. The first inlet 211 is located outside the first cavity 1011 to allow gas to enter the first cavity 1011 from the air inlet pipe 20.

[0032] The air outlet pipe 30 has an inlet and an outlet. The inlet of the air outlet pipe 30 is the second inlet 311, and the outlet of the air outlet pipe 30 is the second outlet 312. The second inlet 311 enters the second cavity 1012 and communicates with the second cavity 1012. The second outlet 312 is located outside the second cavity 1012 to allow gas to flow out of the second cavity 1012 through the air outlet pipe 30.

[0033] The first outlet 212 is arranged opposite to the flow path inlet 411, thereby reducing the resistance of the air flow from the first outlet 212 to the flow path inlet 411 and making the air flow easier. The first outlet 212 and the flow path inlet 411 are arranged at an interval, and the noise reduction effect of the first cavity 1011 on the air flow can be improved.

[0034] The flow path outlet 412 is arranged opposite to the second inlet 311, thereby reducing the resistance of the air flow from the flow path outlet 412 to the second inlet 311 and making the air flow easier. The flow path outlet 412 and the second inlet 311 are arranged at an interval, and the noise reduction effect of the second cavity 1012 on the air flow can be improved.

[0035] With the above structure, the air flow can flow out from the air inlet pipe 20, through the communication flow path 41, and into the air outlet pipe 30. The air flow resistance is small, and the effects of sound absorption and noise reduction are high. In particular, the high-frequency aerodynamic noise can be reduced. When applied to a compressor, the air intake efficiency is high, and the impact on the compression efficiency of the compressor is small.

[0036] Regarding the air intake muffler 100 provided by the embodiments of the present application, compared with the prior art, in the air intake muffler 100 of the embodiments of the present application, the communication flow path 41 is arranged to communicate the first cavity 1011 and the second cavity 1012. The first outlet 212 of the air inlet pipe 20 is made to enter the first cavity 1011 and is arranged facing the flow path inlet 411 of the communication flow path 41, and the flow path outlet 412 of the communication flow path 41 is arranged facing the second inlet 311 of the air outlet pipe 30. By doing so, the resistance of the airflow from the air inlet pipe 20 to the air outlet pipe 30 through the communication flow path 41 is reduced, and the air intake efficiency is improved. At the same time, by arranging the first outlet 212 of the air inlet pipe 20 and the flow path inlet 411 at an interval, the first cavity 1011 can effectively silence the airflow from the air inlet pipe 20 to the communication flow path 41, and the noise can be reduced. Furthermore, by arranging the flow path outlet 412 of the communication flow path 41 and the second inlet 311 of the air outlet pipe 30 at an interval, the second cavity 1012 can effectively silence the airflow from the communication flow path 41 to the air outlet pipe 30, and the noise can be reduced. Thereby, the noise reduction performance of the air intake muffler 100 is improved, and thus both the air intake efficiency and the noise reduction performance can be achieved simultaneously.

[0037] In one embodiment, referring to FIGS. 1, 2, and 9, the air intake muffler 100 includes a casing 10. The casing 10 has a cavity, and the cavity constitutes the muffler cavity 101. A partition wall 13 is provided in the casing 10, and the partition wall 13 divides the muffler cavity 101 into a first cavity 1011 and a second cavity 1012. An insertion pipe 40 is provided in the partition wall 13. The insertion pipe 40 communicates the first cavity 1011 and the second cavity 1012, and the inside of the insertion pipe 40 forms a communication flow path 41. The air inlet pipe 20 and the air outlet pipe 30 are respectively connected to the casing 10. Such an air intake muffler 100 has a simple structure and a small volume.

[0038] Note that two shells having cavities are used. An air inlet pipe 20 and an air outlet pipe 30 are respectively arranged in the two shells and are communicated by a pipeline. The two cavities respectively function as a first cavity 1011 and a second cavity 1012 of the muffler cavity 101, and the pipeline may function as a communication flow path 41.

[0039] In one embodiment, referring to FIGS. 4, 5 and 9, the first cavity 1011 is located below the second cavity 1012. The air intake muffler 100 further includes a first oil leakage flow path 131. The first oil leakage flow path 131 communicates the first cavity 1011 and the second cavity 1012. A second oil leakage flow path 122 is provided at the bottom of the first cavity 1011. Thereby, the oil droplets deposited in the second cavity 1012 from the airflow can flow from the first oil leakage flow path 131 into the first cavity 1011, merge with the oil droplets in the first cavity 1011, and flow out from the second oil leakage flow path 122.

[0040] In one embodiment, an oil leakage hole may be arranged in the partition wall 13 to form the above-mentioned first oil leakage flow path 131, and an oil leakage hole may be arranged at the bottom of the casing 10 to form the above-mentioned second oil leakage flow path 122. Note that when two shells having cavities are used, it will be understood that a pipe may be used to connect the two shells and the pipe may be used as the first oil leakage flow path 131.

[0041] In one embodiment, the diameter of the oil leakage hole is in the range of 0.8 mm to 1.2 mm. For example, the diameter of the oil leakage hole may be 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, etc. Thereby, the oil droplets can effectively pass through the oil leakage hole and the sound absorption effect can be prevented from being affected.

[0042] In one embodiment, referring to FIGS. 2, 4, 5 and 8, the casing 10 includes a first shell 11 and a second shell 12. The first shell 11 and the second shell 12 are snap-fitted to each other. The partition wall 13 is disposed on the second shell 12. When the first shell 11 and the second shell 12 are snap-fitted, the partition wall 13 abuts against the first shell 11 to partition the muffler cavity 101 into a first cavity 1011 and a second cavity 1012. The air inlet pipe 20 is connected to the first shell 11, the air outlet pipe 30 is connected to the first shell 11, and the insertion pipe 40 is provided on the partition wall 13. The air intake muffler 100 having such a structure is easy to process, manufacture and assemble. It will be understood that the partition wall 13 can also be disposed on the first shell 11.

[0043] In one embodiment, a positioning slot 111 is provided on the side surface of the first shell 11, and a positioning rib 121 is provided on the side surface of the second shell 12. When the first shell 11 and the second shell 12 are connected, the positioning rib 121 of the second shell 12 is inserted into the positioning slot 111 of the first shell 11 to firmly connect the first shell 11 and the second shell 12. It will be understood that the first shell 11 can also be connected to the second shell 12 by planar joining.

[0044] Of course, a positioning rib 121 can be provided on the side surface of the first shell 11, and a positioning slot 111 can be provided on the side surface of the second shell 12. When the first shell 11 and the second shell 12 are connected, the positioning rib 121 can be inserted into the positioning slot 111 to firmly connect the first shell 11 and the second shell 12.

[0045] In one embodiment, an adapter slot 112 is provided on the first shell 11. When the first shell 11 and the second shell 12 are connected, one side of the partition wall 13 is inserted into the adapter slot 112 so that the partition wall 13 partitions the muffler cavity 101 into a first cavity 1011 and a second cavity 1012.

[0046] In one embodiment, referring to FIGS. 2, 4, and 7, the air intake muffler 100 includes a muffler duct 52. Muffler holes 521 are provided in the side wall of the muffler duct 52. The muffler duct 52 is provided between the flow path outlet 412 and the second inlet 311. By arranging the muffler duct 52, the flow from the flow path outlet 412 to the air outlet pipe 30 can be better guided, the resistance of the air flow can be reduced, and the air intake efficiency can be improved. Muffler holes 521 are provided on the side surface of the muffler duct 52 to improve the sound absorption effect, and in particular, the mechanical noise of low and medium frequencies can be effectively reduced.

[0047] In one embodiment, one end of the muffler duct 52 is connected to the flow path outlet 412, so that the air flow in the communication flow path 41 can easily enter the muffler duct 52, and the resistance of the air flow is reduced. The other end of the muffler duct 52 is arranged at a distance from the second inlet 311, and the performance of sound absorption and noise reduction can be improved.

[0048] In one embodiment, when the air intake muffler 100 includes the insertion pipe 40, one end of the muffler duct 52 is attached to the insertion pipe 40, which can facilitate the attachment and fixation of the muffler duct 52. It should be understood that the muffler duct 52 may also be connected to the inner wall of the casing 10 via a bracket.

[0049] In one embodiment, referring to FIGS. 2 and 4, an attachment slot 42 is provided at one end of the insertion pipe 40 connected to the second cavity 1012 so that the muffler duct 52 is positioned by the attachment slot 42. One end of the muffler duct 52 is attached to the attachment slot 42.

[0050] In one embodiment, referring to FIG. 4, the distance between the other end of the muffler duct 52 and the second inlet 311 is in the range of 1 / 2 to 1 / 4 of the length of the second cavity 1012 along the axial direction of the muffler duct 52. That is, in the axial direction of the muffler duct 52, the distance between the other end of the muffler duct 52 and the second inlet 311 is in the range of 1 / 2 to 1 / 4 of the length of the second cavity 1012, so that a good sound absorption effect is ensured, and the resistance of the air flow entering from the muffler duct 52 into the air outlet pipe 30 becomes smaller.

[0051] In one embodiment, the distance between the other end of the muffler duct 52 and the second inlet 311 is 1 / 4 of the length of the second cavity 1012 along the axial direction of the muffler duct 52. That is, in the axial direction of the muffler duct 52, the distance between the other end of the muffler duct 52 and the second inlet 311 is 1 / 4 of the length of the second cavity 1012, so as to reduce the resistance of the air flow and ensure a good sound absorption effect.

[0052] In one embodiment, referring to FIGS. 2, 4, 7, and 9, a filter screen 51 is attached to the flow path outlet 412, which can effectively filter impurities in the air flow, especially oil droplets in the air flow.

[0053] In one embodiment, when the air intake muffler 100 includes the insertion pipe 40, the filter screen 51 can be attached to the insertion pipe 40 to facilitate the attachment and fixation of the filter screen 51.

[0054] In one embodiment, referring to FIGS. 2 and 4, an attachment slot 42 is provided at one end of the insertion pipe 40 connected to the second cavity 1012 so that the filter screen 51 is positioned by the attachment slot 42, and the filter screen 51 is attached to the attachment slot 42.

[0055] In one embodiment, when the air intake muffler 100 includes the insertion pipe 40, the muffler duct 52, and the filter screen 51, the filter screen 51 and the muffler duct 52 are attached to the insertion pipe 40, and the muffler duct 52 presses the filter screen 51 against the insertion pipe 40 to facilitate the fixing of the filter screen 51.

[0056] In one embodiment, referring to FIGS. 4 and 7, the axial direction of the flow path inlet 411, the axial direction of the flow path outlet 412, the axial direction of the first outlet 212, and the axial direction of the second inlet 311 are on the same plane. With such a structure, the flow path of the airflow in the muffler cavity 101 becomes shorter, the resistance of the airflow is reduced, and the air intake efficiency is improved.

[0057] In one embodiment, the communication flow path 41 is a linear flow path, which facilitates processing and manufacturing and can make the length of the communication flow path 41 shorter.

[0058] In one embodiment, referring to FIGS. 4 and 5, the distance between the first outlet 212 and the flow path inlet 411 is in the range of 1 mm to 3 mm. For example, the distance between the first outlet 212 and the flow path inlet 411 can be 1.0 mm, 1.2 mm, 1.4 mm, 1.61 mm, 1.8 mm, 2.0 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3.0 mm, etc. Thereby, the resistance when the airflow flows between the first outlet 212 and the flow path inlet 411 is reduced, and a good sound absorption and noise reduction effect is ensured.

[0059] In one embodiment, referring to FIGS. 2, 4, and 5, the first outlet 212 is located on one axial side of the air inlet pipe 20. That is, the first outlet 212 is arranged to transition and curve with respect to the air inlet pipe 20. The flow path inlet 411 is located on the side facing the air inlet pipe 20 of the communication flow path 41. That is, the flow path inlet 411 is arranged to transition and curve with respect to the communication flow path 41. Such a structure facilitates processing and manufacturing, and the oil droplets in the air flow collide with the curved portion of the air inlet pipe 20 and the curved portion of the communication flow path 41, so that the oil droplets in the air flow gather, precipitate, and reduce the oil droplet content in the air flow.

[0060] It should be noted that the air inlet pipe 20 can also be arranged as a straight pipe. That is, the first outlet 212 is arranged along the axial direction of the air inlet pipe 20, the flow path inlet 411 of the communication flow path 41 is curved toward the air inlet pipe 20, and the first outlet 212 of the air inlet pipe 20 can be arranged to face the flow path inlet 411 of the communication flow path 41 with a gap therebetween.

[0061] Of course, the communication flow path 41 can also be arranged as a straight pipe. That is, the flow path inlet 411 is arranged along the axial direction of the communication flow path 41, the air inlet pipe 20 extends to below the communication flow path 41, the first outlet 212 of the air inlet pipe 20 is curved toward the communication flow path 41, and the first outlet 212 of the air inlet pipe 20 can be arranged to face the flow path inlet 411 of the communication flow path 41 with a gap therebetween.

[0062] In one embodiment, referring to FIG. 4, the second outlet 312 of the air outlet pipe 30 is located on one axial side of the air outlet pipe 30, which is easy to connect to the pump body of the compressor and reduces the occupied space of the air suction muffler 100.

[0063] In one embodiment, referring to FIG. 9, a convex rib 32 is provided on one side of the air outlet pipe 30. The convex rib 32 is arranged around the second outlet 312 and is connected in cooperation with a position limiting slot on the pump body of the compressor to ensure the sealing performance of the connection.

[0064] In one embodiment, referring to FIGS. 1, 3 and 6, a positioning protrusion 33 is provided on one side of the air outlet pipe 30 and is positioned in cooperation with a notch on the pump body of the compressor to facilitate the installation and fixation of the air intake muffler 100.

[0065] The air intake muffler 100 of the embodiment of the present application has a small flow resistance of the air flow. When applied, it has a high air intake efficiency, good sound absorption and noise reduction effects. In particular, it can reduce high-frequency aerodynamic noise. Furthermore, the noise reduction effect on low-frequency and medium-frequency mechanical noise is also relatively good. The compressor applying the air intake muffler 100 of the embodiment of the present application can reduce the flow resistance of the compressor air intake, improve the refrigeration performance of the compressor, and improve the high-frequency aerodynamic noise of the air intake muffler 100.

[0066] Since the structure of the air intake muffler 100 with low flow resistance and high efficiency has the above advantages, the compressor according to the embodiment of the present application can, by arranging the structure of the air intake muffler 100 with low flow resistance and high efficiency, not only eliminate low-frequency and medium-frequency mechanical noise inside the compressor by using the structure of the air intake muffler 100 with low flow resistance and high efficiency, but also reduce the flow resistance of the compressor air intake system, improve the refrigeration performance of the compressor, and improve the high-frequency aerodynamic noise of the air intake muffler 100.

[0067] The embodiment of the present application further provides a compressor. Referring to FIG. 1, the compressor includes the air intake muffler 100 of the above embodiment. The compressor of the embodiment of the present application uses the above air intake muffler 100, has a small air intake resistance, a high air intake efficiency, a high compression efficiency, and low noise.

[0068] In one embodiment, the compressor can be a reciprocating compressor. Of course, the compressor can also be a rotary compressor or the like.

[0069] Embodiments of the present application further provide an electrical device. Referring to FIG. 1, the electrical device includes the compressor of the above embodiments. The electrical device of the embodiments of the present application uses the above compressor and thus uses the above air intake muffler 100, having a small air intake resistance, high air intake efficiency, low noise, and high compression efficiency of the compressor.

[0070] The electrical device of the embodiments of the present application can be a refrigerator, an air conditioner, etc. Of course, it can also be other devices that use a compressor.

[0071] The above are merely optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, and improvements made within the scope of the spirit and principles of the present application shall all be included in the protection scope of the present application.

Description of Reference Numerals

[0072] Here, the correspondence between the reference numerals and component names in FIGS. 1 to 9 is as follows. 100 Air intake muffler 10 Casing 101 Muffler cavity 1011 First cavity 1012 Second cavity 11 First shell 111 Positioning slot 112 Adapter slot 12 Second shell 121 Positioning rib 122 Second oil leakage flow path 13 Partition wall 131 First oil leakage flow path 20 Air inlet pipe 211 First inlet 212 First outlet 30 Air outlet pipe 311 Second inlet 312 Second outlet 32 Convex rib 33 Positioning protrusion 40 Insertion tube 41 Communication flow path 411 Flow path inlet 412 Flow path outlet 42 Mounting slot 51 Filter screen 52 Muffler duct 521 Muffler hole

Claims

1. An air intake muffler, comprising a muffler cavity, an air inlet pipe, and an air outlet pipe, wherein the muffler cavity includes a first cavity and a second cavity, the air intake muffler further includes a communication flow path for communicating the first cavity and the second cavity, the communication flow path has a flow path inlet entering the first cavity and a flow path outlet communicating with the second cavity, the air inlet pipe has a first inlet located outside the first cavity and a first outlet entering the first cavity, the air outlet pipe has a second inlet communicating with the second cavity and a second outlet located outside the second cavity, the first outlet is disposed opposite to and spaced from the flow path inlet, and the flow path outlet is disposed opposite to and spaced from the second inlet characterizing the air intake muffler.

2. The air intake muffler further includes a muffler duct, a muffler hole is provided on a side wall of the muffler duct, and the muffler duct is provided between the flow path outlet and the second inlet characterizing the air intake muffler according to Claim 1.

3. One end of the muffler duct is connected to the flow path outlet, and the other end of the muffler duct is disposed spaced from the second inlet characterizing the air intake muffler according to Claim 2.

4. The distance between the other end of the muffler duct and the second inlet is in the range of 1 / 2 to 1 / 4 of the length of the second cavity along the axial direction of the muffler duct characterizing the air intake muffler according to Claim 3.

5. The axial directions of the flow path inlet, the flow path outlet, the first outlet, and the second inlet are in the same plane characterizing the air intake muffler according to any one of Claims 1 to 4.

6. The distance between the first outlet and the flow path inlet is in the range of 1 to 3 mm characterizing the air intake muffler according to any one of Claims 1 to 4.

7. A filter screen is attached to the flow path outlet characterizing the air intake muffler according to any one of Claims 1 to 4.

8. The first outlet is located on one axial side of the air inlet pipe, and the flow path inlet is located on the side of the communication flow path facing the air inlet pipe. The air intake muffler according to any one of claims 1 to 4, characterized in that.

9. The air intake muffler includes a casing having the muffler cavity, and a partition wall for partitioning the muffler cavity into the first cavity and the second cavity is provided in the casing. An insertion pipe forming the communication flow path is provided in the partition wall, and the air inlet pipe and the air outlet pipe are each connected to the casing. The air intake muffler according to any one of claims 1 to 4, characterized in that.

10. The first cavity is located below the second cavity, and the air intake muffler further includes a first oil leakage flow path for communicating the first cavity and the second cavity. A second oil leakage flow path is provided at the bottom of the first cavity. The air intake muffler according to any one of claims 1 to 4, characterized in that.

11. A compressor, Including the air intake muffler according to any one of claims 1 to 10 The compressor characterized by that.

12. Including the compressor according to claim 11 The electrical equipment characterized by that.

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