Air intake mufflers, compressors, 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] Refrigerators are essential household appliances in daily life, and people's requirements for their performance are increasing. In addition to the important refrigeration capacity of refrigerators, their comfort is also one of the important indicators. As an important parameter for measuring comfort, the noise value has also attracted 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 outlets and inlets 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, resulting in a decrease in air intake efficiency and ultimately leading to a decrease in compressor efficiency. The second is that the outlets and inlets 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, resulting in a large noise of the compressor.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The embodiments of this application aim to provide an air inlet muffler, a compressor, and an electrical equipment to solve the problem of the prior art that it is difficult to achieve both noise reduction performance and air intake efficiency of the air inlet muffler of a compressor.

Means for Solving the Problems

[0006] To achieve the above objective, the air intake muffler provided as a technical solution employed in the embodiments of the present application includes a muffler cavity, an air inlet pipe, and an air outlet pipe, wherein the muffler cavity includes a first cavity and a second cavity, and the air intake muffler further includes a communication passage connecting the first cavity and the second cavity, the communication passage having a passage inlet that enters the first cavity and a passage outlet that communicates with the second cavity, the air inlet pipe having a first inlet located outside the first cavity and a first outlet that enters the first cavity, the air outlet pipe having a second inlet that communicates with the second cavity and a second outlet located outside the second cavity, the first outlet being positioned directly opposite and spaced apart from the passage inlet, and the passage outlet being positioned directly opposite and spaced apart from the second inlet.

[0007] In an optional embodiment, the air intake muffler further includes a muffler duct, the side wall of which is provided a muffler hole, and the muffler duct is provided between the flow outlet and the second inlet.

[0008] In an optional embodiment, one end of the muffler duct is connected to the flow outlet, and the other end of the muffler duct is positioned at a distance 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 direction of the flow path inlet, the axial direction of the flow path outlet, the axial direction of the first outlet, and the axial direction of the second inlet lie on 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 flow path inlet is located on the side of the communication flow path facing the air inlet pipe.

[0014] In an optional embodiment, the air intake muffler includes a casing having the muffler cavity, the casing being provided with a partition wall dividing the muffler cavity into a first cavity and a second cavity, the partition wall being provided with an insertion pipe forming the communication passage, and the air inlet pipe and the air outlet pipe being connected to the casing, respectively.

[0015] In an optional embodiment, the first cavity is located below the second cavity, the air intake muffler further includes a first oil leak passage connecting the first cavity and the second cavity, and a second oil leak passage is provided at the bottom of the first cavity.

[0016] Another object of the embodiments of this application is to provide a compressor that includes the air intake muffler described in the above embodiments.

[0017] The embodiments of this application further aim to provide electrical equipment including the compressor described in the above embodiments. [Effects of the Invention]

[0018] The beneficial effects of the air intake muffler provided by the embodiment of the present application are as follows: Compared with the prior art, the air intake muffler of the embodiment of the present application improves air intake efficiency by arranging a connecting passage to connect the first cavity and the second cavity, having the first outlet of the air inlet pipe enter the first cavity and be positioned directly opposite the inlet of the connecting passage, and having the outlet of the connecting passage directly opposite the second inlet of the air outlet pipe. At the same time, the first outlet of the air inlet pipe and the inlet of the connecting passage are spaced apart so that the first cavity effectively silences the airflow from the air inlet pipe to the connecting passage, thereby reducing noise. Furthermore, the outlet of the connecting passage and the second inlet of the air outlet pipe are spaced apart so that the second cavity effectively silences the airflow from the connecting passage to the air outlet pipe, thereby reducing noise. This improves the noise reduction performance of the air intake muffler, and ultimately achieves both air intake efficiency and noise reduction performance.

[0019] The beneficial effects of the compressor provided by the embodiment of the present invention are as follows: Compared to the prior art, the compressor of the embodiment of the present invention has low air intake resistance, high air intake efficiency, and low noise because it uses the above-mentioned air intake muffler.

[0020] The beneficial effects of the electrical equipment provided by the embodiments of this application are as follows: Compared to the prior art, the electrical equipment of the embodiments of this application has the technical effects of the compressor described above, as it uses the compressor described above, which will not be repeated here. [Brief explanation of the drawing]

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings that may be used to describe the embodiments or exemplary techniques are briefly introduced below. Obviously, the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without any creative effort.

[0022] [Figure 1] It is a schematic structural view of an air intake muffler provided by an embodiment of the present application. [Figure 2] It is a schematic exploded structural view of an air intake muffler provided by an embodiment of the present application. [Figure 3] It is a schematic front structural view of an air intake muffler provided by an embodiment of the present application. [Figure 4] It is a schematic cross-sectional structural view taken along the A-A line of FIG. 3. [Figure 5] It is a schematic cross-sectional structural view taken along the B-B line of FIG. 3. [Figure 6] It is a schematic right-side structural view of an air intake muffler provided by an embodiment of the present application. [Figure 7] It is a cross-sectional structural view taken along the C-C line of FIG. 6. [Figure 8] It is a schematic top structural view of an air intake muffler provided by an embodiment of the present application. [Figure 9] It is a cross-sectional structural view taken along the D-D line of FIG. 8.

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 combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit 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 this description, “multiple” means two or more unless explicitly and specifically limited. “Several” means one or more unless explicitly and specifically limited. The terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more such features. The orientations or positional relationships indicated by terms such as “center,” “length,” “width,” “thickness,” “top,” “bottom,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside” are based on the orientations and positional relationships shown in the drawings and are for convenience to describe this application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, or must be constructed and operate in a specific orientation. Therefore, they should not be interpreted as limiting this application.

[0026] In this description, unless otherwise explicitly stated and limited, the terms “attachment,” “connection,” and “linking” should be understood in a broad sense, and it should be noted that they can be, for example, fixed connections, removable connections, or integrated connections; they can be mechanical or electrical connections; they can be direct connections or indirect connections via an intermediate medium; and they can be internal communication between two elements or an interactive relationship between two elements. Those skilled in the art will understand the specific meaning of these terms in this application depending on the particular context.

[0027] Any reference in this specification to “one embodiment,” “several embodiments,” or “embodiments” means that the specific features, structures, or properties described in relation to the embodiment are included in one or more embodiments of this application. Thus, phrases such as “in one embodiment,” “several embodiments,” “several other embodiments,” and “several other embodiments” appearing elsewhere in this specification do not necessarily all refer to the same embodiment, and unless otherwise specified, mean “one or more embodiments, but not all embodiments.” Furthermore, specific features, structures, or properties can be combined in any appropriate manner within one or more embodiments.

[0028] The air intake muffler 100 provided by this application will be described with reference to Figures 4, 5, and 9. The air intake muffler 100 includes a muffler cavity 101, a communication passage 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, and a communication passage 41 connects the first cavity 1011 and 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. As a result, airflow can enter the first cavity 1011 from the air inlet pipe 20, pass through the communication passage 41 to the second cavity 1012, and flow out from the air outlet pipe 30.

[0030] The communication channel 41 has an inlet and an outlet. The inlet of the communication channel 41 is the channel inlet 411, and the outlet of the communication channel 41 is the channel outlet 412. The channel inlet 411 enters the first cavity 1011 and communicates with the first cavity 1011, and the channel outlet 412 connects to the second cavity 1012 and communicates with the second cavity 1012, thereby connecting the first cavity 1011 and 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 a first inlet 211, and the outlet of the air inlet pipe 20 is a first outlet 212, the first outlet 212 enters into the first cavity 1011 and communicates with the first cavity 1011, and the first inlet 211 is located outside the first cavity 1011 so that gas enters 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 a second inlet 311, and the outlet of the air outlet pipe 30 is a second outlet 312. The second inlet 311 enters into and communicates with the second cavity 1012, and the second outlet 312 is located outside the second cavity 1012, allowing gas to flow out of the second cavity 1012 through the air outlet pipe 30.

[0033] The first outlet 212 is positioned directly opposite the flow path inlet 411, thereby reducing resistance to the airflow from the first outlet 212 to the flow path inlet 411 and making the airflow easier to pass through. By positioning the first outlet 212 and the flow path inlet 411 with a gap between them, the noise reduction effect of the first cavity 1011 on the airflow can be improved.

[0034] The flow path outlet 412 is positioned directly opposite the second inlet 311, thereby reducing resistance to the airflow from the flow path outlet 412 to the second inlet 311 and making the airflow easier. By positioning the flow path outlet 412 and the second inlet 311 with a gap between them, the noise reduction effect of the second cavity 1012 on the airflow can be improved.

[0035] With the above structure, airflow can flow from the air inlet pipe 20 through the communication channel 41 to the air outlet pipe 30, resulting in low airflow resistance, high noise reduction and silencing effects, and in particular, reduction of high-frequency aerodynamic noise. When applied to a compressor, it results in high air intake efficiency and minimal impact on the compressor's compression efficiency.

[0036] The air intake muffler 100 provided by the embodiment of the present application, compared to the prior art, is configured such that the communication passage 41 connects the first cavity 1011 and the second cavity 1012, the first outlet 212 of the air inlet pipe 20 enters the first cavity 1011 and is positioned directly opposite the passage inlet 411 of the communication passage 41, and the passage outlet 412 of the communication passage 41 is positioned directly opposite the second inlet 311 of the air outlet pipe 30. This reduces the resistance to the airflow from the air inlet pipe 20 and the communication passage 41 to the air outlet pipe 30, thereby improving the air intake efficiency. At the same time, by arranging the first outlet 212 and the flow path inlet 411 of the air inlet pipe 20 with a gap between them, the first cavity 1011 effectively silences the airflow from the air inlet pipe 20 to the connecting flow path 41, thereby reducing noise. Furthermore, by arranging the flow path outlet 412 of the connecting flow path 41 and the second inlet 311 of the air outlet pipe 30 with a gap between them, the second cavity 1012 effectively silences the airflow from the connecting flow path 41 to the air outlet pipe 30, thereby reducing noise. This improves the noise reduction performance of the air intake muffler 100, and ultimately achieves both air intake efficiency and noise reduction performance.

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

[0038] It will be understood that two shells having cavities may be used, with an air inlet pipe 20 and an air outlet pipe 30 arranged in each of the two shells and connected by a conduit, with the two cavities functioning as the first cavity 1011 and the second cavity 1012 of the muffler cavity 101, respectively, and the conduit functioning as a connecting passage 41.

[0039] In one embodiment, referring to Figures 4, 5, and 9, the first cavity 1011 is located below the second cavity 1012, and the air intake muffler 100 further includes a first oil leakage passage 131, which connects the first cavity 1011 and the second cavity 1012, and a second oil leakage passage 122 is provided at the bottom of the first cavity 1011. As a result, oil droplets deposited in the second cavity 1012 from the airflow flow from the first oil leakage passage 131 to the first cavity 1011, merge with the oil droplets in the first cavity 1011, and can flow out through the second oil leakage passage 122.

[0040] In one embodiment, an oil leak hole may be placed in the partition wall 13 to form the first oil leak passage 131, or an oil leak hole may be placed at the bottom of the casing 10 to form the second oil leak passage 122. It should be understood that when using two shells having cavities, the two shells may be connected using a pipe, and the pipe may be used as the first oil leak passage 131.

[0041] In one embodiment, the diameter of the oil leak hole is in the range of 0.8 mm to 1.2 mm, for example, the diameter of the oil leak hole may be 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, etc. This allows oil droplets to pass through the oil leak hole effectively without affecting the sound-dampening effect.

[0042] In one embodiment, referring to Figures 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 being snap-fit ​​connected to each other, and a partition wall 13 located on the second shell 12. When the first shell 11 and the second shell 12 are snap-fit ​​connected, the partition wall 13 abuts against the first shell 11, dividing the muffler cavity 101 into a first cavity 1011 and a second cavity 1012. An air inlet pipe 20 is connected to the first shell 11, an air outlet pipe 30 is connected to the first shell 11, and an inlet pipe 40 is provided on the partition wall 13. An air intake muffler 100 of this structure is easy to process, manufacture, and assemble. It will be understood that the partition wall 13 can also be located on the first shell 11.

[0043] In one embodiment, a positioning slot 111 is provided on the side of the first shell 11, and a positioning rib 121 is provided on the side 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, thereby securely connecting the first shell 11 and the second shell 12. It should also be understood that the first shell 11 can be connected to the second shell 12 by planar joining.

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

[0045] In one embodiment, the first shell 11 is provided with an adapter slot 112, and 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 divides the muffler cavity 101 into a first cavity 1011 and a second cavity 1012.

[0046] In one embodiment, referring to Figures 2, 4, and 7, the air intake muffler 100 includes a muffler duct 52, the side wall of which is provided with muffler holes 521, and the muffler duct 52 is located between the flow outlet 412 and the second inlet 311. By arranging the muffler duct 52, the flow from the flow outlet 412 to the air outlet pipe 30 can be better guided, reducing airflow resistance and improving air intake efficiency. The muffler holes 521 are provided on the side of the muffler duct 52 to improve the sound-dampening effect, and in particular, low-frequency and medium-frequency mechanical noise can be effectively reduced.

[0047] In one embodiment, one end of the muffler duct 52 is connected to the flow outlet 412, allowing airflow in the communication flow path 41 to easily enter the muffler duct 52 and reducing airflow resistance. The other end of the muffler duct 52 is positioned at a distance from the second inlet 311 to improve noise reduction and silencing performance.

[0048] In one embodiment, if the air intake muffler 100 includes an inlet 40, one end of the muffler duct 52 is attached to the inlet 40 to facilitate the installation and fixing of the muffler duct 52. It will also be understood that the muffler duct 52 may be connected to the inner wall of the casing 10 via a bracket.

[0049] In one embodiment, referring to Figures 2 and 4, a mounting slot 42 is provided at one end of the inlet 40 connected to the second cavity 1012, and one end of the muffler duct 52 is attached to the mounting slot 42, so that the muffler duct 52 is positioned by the mounting slot 42.

[0050] In one embodiment, referring to Figure 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. In other words, by having the distance between the other end of the muffler duct 52 and the second inlet 311 in the axial direction of the muffler duct 52 be in the range of 1 / 2 to 1 / 4 of the length of the second cavity 1012, a good sound-dampening effect is ensured, and the resistance of the airflow entering the air outlet pipe 30 from the muffler duct 52 is reduced.

[0051] In one embodiment, the distance between the other end of the muffler duct 52 and the second inlet 311 is 1 / 4 the length of the second cavity 1012 along the axial direction of the muffler duct 52. In other words, by making the distance between the other end of the muffler duct 52 and the second inlet 311 in the axial direction of the muffler duct 52 1 / 4 the length of the second cavity 1012, airflow resistance is reduced and a good sound-dampening effect is ensured.

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

[0053] In one embodiment, if the air intake muffler 100 includes an intubation tube 40, the filter screen 51 can be attached to the intubation tube 40 to facilitate the installation and fixing of the filter screen 51.

[0054] In one embodiment, referring to Figures 2 and 4, a mounting slot 42 is provided at one end of the intubation 40 connected to the second cavity 1012, and the filter screen 51 is mounted to the mounting slot 42 so that the filter screen 51 is positioned by the mounting slot 42.

[0055] In one embodiment, when the air intake muffler 100 includes an inlet 40, a muffler duct 52, and a filter screen 51, the filter screen 51 and the muffler duct 52 are attached to the inlet 40, and the muffler duct 52 presses the filter screen 51 against the inlet 40, making it easier to fix the filter screen 51 in place.

[0056] In one embodiment, referring to Figures 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. This structure shortens the flow path of the airflow within the muffler cavity 101, reduces airflow resistance, and improves air intake efficiency.

[0057] In one embodiment, the communication channel 41 is a straight channel, which facilitates processing and manufacturing, and allows the length of the communication channel 41 to be shortened.

[0058] In one embodiment, referring to Figures 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 may 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. This reduces the resistance when air flows between the first outlet 212 and the flow path inlet 411, ensuring good noise reduction and silencing effects.

[0059] In one embodiment, referring to Figures 2, 4, and 5, the first outlet 212 is located on one side in the axial direction of the air inlet pipe 20. That is, the first outlet 212 is positioned to curve relative to the air inlet pipe 20. The flow channel inlet 411 is located on the side of the communication flow channel 41 facing the air inlet pipe 20. That is, the flow channel inlet 411 is positioned to curve relative to the communication flow channel 41. This structure facilitates processing and manufacturing, and when oil droplets in the airflow collide with the curved portion of the air inlet pipe 20 and the curved portion of the communication flow channel 41, the oil droplets in the airflow aggregate and precipitate, reducing the oil droplet content in the airflow.

[0060] Furthermore, the air inlet pipe 20 can also be arranged as a straight pipe. That is, the first outlet 212 may be arranged along the axial direction of the air inlet pipe 20, the flow inlet 411 of the communication flow path 41 may be curved toward the air inlet pipe 20, and the first outlet 212 of the air inlet pipe 20 may be positioned directly opposite and spaced apart from the flow inlet 411 of the communication flow path 41.

[0061] Of course, the communication channel 41 can also be arranged in a straight pipe. That is, the channel inlet 411 is arranged along the axial direction of the communication channel 41, the air inlet pipe 20 extends to the bottom of the communication channel 41, the first outlet 212 of the air inlet pipe 20 is curved toward the communication channel 41, and the first outlet 212 of the air inlet pipe 20 may be positioned directly opposite and spaced apart from the channel inlet 411 of the communication channel 41.

[0062] In one embodiment, referring to Figure 4, the second outlet 312 of the air outlet pipe 30 is located on one side in the axial direction of the air outlet pipe 30, making it easy to connect to the compressor pump body and reducing the space occupied by the air intake muffler 100.

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

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

[0065] The air intake muffler 100 of the embodiment of the present invention has low airflow resistance, and when applied, it has high air intake efficiency and good noise reduction and silencing effects. In particular, it can reduce high-frequency aerodynamic noise. Furthermore, it also has a relatively good noise reduction effect against low-frequency and medium-frequency mechanical noise. A compressor to which the air intake muffler 100 of the embodiment of the present invention is applied can reduce the airflow 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] Because the structure of the air intake muffler 100, which has low flow resistance and high efficiency, has the above advantages, the compressor according to the embodiment of the present application, by arranging the structure of the air intake muffler 100, not only can the low-frequency and medium-frequency mechanical noise inside the compressor be silenced, but the flow resistance of the compressor air intake system can also be reduced, thereby improving the refrigeration performance of the compressor and improving the high-frequency aerodynamic noise of the air intake muffler 100.

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

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

[0069] Embodiments of the present application further provide electrical equipment. Referring with reference to Figure 1, the electrical equipment includes the compressor of the above embodiment. The electrical equipment of the present embodiment uses the above compressor and, consequently, the above air intake muffler 100, resulting in low air intake resistance, high air intake efficiency, low noise, and high compressor compression efficiency.

[0070] The electrical equipment in the embodiment of this application could be a refrigerator, an air conditioner, etc. Of course, it could also be other equipment that uses a compressor.

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

[0072] The correspondence between the reference numerals and part names in Figures 1 to 9 is as follows: 100 Air Intake Muffler 10 Casing 101 Muffler Cavity 1011 First Cavity 1012 Second Cavity 11 The First Shell 111 Positioning slots 112 adapter slots 12. The second shell 121 Positioning Rib 122 Second oil leak channel 13 Bulkhead 131 First oil leak channel 20 Air inlet pipe 211 First Entrance 212 First Exit 30 Air outlet pipe 311 Second entrance 312 Second Exit 32 Convex ribs 33 Positioning protrusion 40 Intubation 41 Connecting channel 411 Channel Inlet 412 Flow outlet 42 mounting slots 51 Filter Screen 52 Muffler duct 521 Muffler holes

Claims

1. It is an air intake muffler, Including the muffler cavity, air inlet pipe and air outlet pipe, The muffler cavity includes a first cavity and a second cavity, The air intake muffler further includes a communication passage that connects the first cavity and the second cavity, The aforementioned communication channel has a channel inlet that enters the first cavity and a channel 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 into 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 positioned directly opposite and spaced apart from the flow channel inlet, and the flow channel outlet is positioned directly opposite and spaced apart from the second inlet. The first outlet is located on one side in the axial direction of the air inlet pipe and is positioned to curve relative to the air inlet pipe. The aforementioned flow channel inlet is located on the side of the communication flow channel facing the air inlet pipe and is arranged to curve relative to the communication flow channel. An air intake muffler characterized by the following.

2. The air intake muffler further includes a muffler duct, the side wall of which is provided with a muffler hole, and the muffler duct is provided between the flow outlet and the second inlet. The air intake muffler according to feature 1.

3. One end of the muffler duct is connected to the flow outlet, and the other end of the muffler duct is positioned at a distance from the second inlet. The air intake muffler according to feature 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. The air intake muffler according to feature 3.

5. The axial direction of the channel inlet, the axial direction of the channel outlet, the axial direction of the first outlet, and the axial direction of the second inlet are all on the same plane. An air intake muffler according to any one of claims 1 to 4.

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

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

8. The air intake muffler includes a casing having the muffler cavity, the casing is provided with a partition wall that divides the muffler cavity into a first cavity and a second cavity, the partition wall is provided with an insertion pipe that forms the communication passage, and the air inlet pipe and the air outlet pipe are each connected to the casing. An air intake muffler according to any one of claims 1 to 4.

9. The first cavity is located below the second cavity, and the air intake muffler further includes a first oil leakage passage connecting the first cavity and the second cavity, and a second oil leakage passage is provided at the bottom of the first cavity. An air intake muffler according to any one of claims 1 to 4.

10. It is a compressor, Includes an air intake muffler according to any one of claims 1 to 4 A compressor characterized by the following features.

11. Includes the compressor described in claim 10 An electrical device characterized by the following features.

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