Suction muffler, compressor and refrigeration equipment

Abstract

The present invention discloses a suction muffler, a compressor and a refrigeration device, comprising a muffler body and a muffler assembly, wherein the muffler body is provided with a muffler inlet and a muffler outlet, a muffler cavity is formed inside the muffler body, the muffler body is provided with a partition for dividing the muffler cavity into a first sub-cavity and a second sub-cavity, the partition is provided with a first conduit wall, the first conduit wall passes through the partition, and the lengths of the first conduit wall on both sides of the partition are different, the muffler body is provided with an assembly hole on the outside of the first conduit wall, the muffler assembly is assembled in the assembly hole, the muffler assembly is provided with a second conduit wall, the second conduit wall passes through the partition, and the lengths of the second conduit wall on both sides of the partition are different, and the first conduit wall and the second conduit wall are spliced ​​to form a conduit connecting the first sub-cavity and the second sub-cavity. The muffler assembly can obtain muffler solutions with different flow channel cross-sectional areas and different effective lengths of conduits, which greatly enriches the selectivity of the muffler solution and adapts to the characteristic requirements of different compressors.

Description

Technical Field

[0001] The invention is used in the field of compressors, and in particular relates to an air suction muffler, a compressor and a refrigeration device. Background Art

[0002] Reciprocating piston compressors used for refrigeration are usually driven by motors to realize the functions of suction, compression and exhaust, that is, reciprocating piston compressors are intermittently suctioned. Compressor noise usually includes airflow noise, mechanical noise and electromagnetic noise. Intermittent suction of the compressor will cause large airflow pulsation at the suction end of the compressor and generate strong airflow noise. In order to suppress the airflow noise of the reciprocating piston compressor, it is necessary to design and apply a suction muffler. The silencing effect of the suction muffler is determined by parameters such as the internal volume size, the internal flow channel length, and the internal flow channel cross-sectional area. When the internal volume of the suction muffler is fixed, the longer the flow channel and the smaller the flow channel area, the better the silencing effect of the suction muffler, but the greater the refrigerant flow pressure loss and the higher the flow loss, resulting in reduced compressor performance; conversely, the shorter the flow channel and the larger the flow channel area, the worse the silencing effect of the suction muffler, but the smaller the refrigerant flow pressure loss and the lower the flow loss, the better the compressor performance. At the same time, an oil leakage hole is provided at the bottom of the muffler, and a blocking structure is provided around the oil leakage hole to prevent the lubricating oil mist from entering the suction muffler.

[0003] There are many types of suction silencers, often including intubation type, guide tube type, multi-cavity type, etc. After the design of each type of suction silencer is finalized, its internal structure is fixed, with a fixed flow channel shape, flow channel length and flow channel cross-sectional area. The suction silencer is made of PBT material by injection molding. The complex internal structural design of the suction silencer makes mold making difficult and the mold cost is expensive. Therefore, a wide variety of suction silencers require the production of a series of molds, resulting in high costs. In order to reduce mold development costs, usually only a few suction silencers are developed, and compressors of different models share the same suction silencer, which will cause most compressors to be unable to match the most targeted suction silencer, that is, ultra-quiet and ultra-high efficiency compressors need to share the same suction silencer. Products with different cooling capacity, performance coefficient, and noise requirements require suction mufflers with different parameters. For example, high-efficiency compressors require suction mufflers with larger flow channel cross-sectional areas and smaller refrigerant flow losses, while ultra-quiet compressors require suction mufflers with smaller flow channel areas and longer pipes to achieve better noise reduction effects. Sharing a muffler cannot achieve the best noise and performance of the compressor. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide an air suction muffler, a compressor and a refrigeration device.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] In a first aspect, an air intake silencer comprises a silencer body and a silencer assembly, wherein the silencer body is provided with a silencer inlet and a silencer outlet, a silencer chamber is formed inside the silencer body, the silencer body is provided with a partition for dividing the silencer chamber into a first sub-chamber and a second sub-chamber, the partition is provided with a first duct wall, the first duct wall passes through the partition, and the lengths of the first duct wall on both sides of the partition are unequal, the silencer body is provided with an assembly hole on the outer side of the first duct wall, the silencer assembly is assembled in the assembly hole, the silencer assembly is provided with a second duct wall, the second duct wall passes through the partition, the lengths of the second duct wall on both sides of the partition are unequal, and the first duct wall and the second duct wall are spliced ​​to form a duct connecting the first sub-chamber and the second sub-chamber.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the muffler body includes a muffler shell and a muffler back plate, the muffler back plate is assembled on the back side of the muffler shell and forms the muffler cavity inside, the partition is formed on the muffler back plate and extends toward the muffler shell, and the inner wall surface of the muffler shell is provided with a first mounting groove that cooperates with the edge of the partition.

[0008] In combination with the first aspect and the above-mentioned implementation manner, in some implementation manners of the first aspect, the assembly hole is arranged on the muffler back plate, the partition is provided with a concave notch on the inner side of the assembly hole, the first duct wall is arranged in the notch, the muffler assembly comprises an assembly back plate, the second duct wall is formed on the assembly back plate, the assembly back plate is assembled to the assembly hole, the second duct wall is embedded in the notch, and is spliced ​​with the first duct wall to form a duct connecting the first sub-chamber and the second sub-chamber.

[0009] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, a matching fitting step is provided between the back plate of the assembly and the back plate of the muffler, the partition is provided with a first fitting groove on the inner side of the notch, the muffler assembly is provided with a first fitting ridge matching with the first fitting groove, the first duct wall is provided with a second fitting groove on the end face facing the assembly hole, and the second duct wall is provided with a second fitting ridge matching with the second fitting groove.

[0010] In combination with the first aspect and the above-mentioned implementations, in certain implementations of the first aspect, the muffler assembly is provided with a cantilever beam hook extending along the assembly direction, and the top and bottom of the partition are provided with hook limiting bosses that can cooperate with the cantilever beam hook.

[0011] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, circulation rings are provided at both ends of the second conduit wall, and the inner diameter of the circulation rings is smaller than the inner diameter of the conduit.

[0012] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, an oil leakage hole is provided at the bottom of the muffler body, the bottom of the muffler body is inclined toward the oil leakage hole, and the outer wall surface of the muffler body is provided with a sunken groove at the oil leakage hole.

[0013] In the second aspect, an air intake silencer includes a silencer body and a silencer assembly, wherein the silencer body is provided with a silencer inlet and a silencer outlet, a silencer chamber is formed inside the silencer body, the silencer body is provided with a partition which divides the silencer chamber into a first sub-chamber and a second sub-chamber, the silencer body is provided with an assembly hole on the outer side of the partition, the silencer assembly is assembled in the assembly hole, and the silencer assembly is provided with a conduit which passes through the partition and connects the first sub-chamber and the second sub-chamber.

[0014] In a third aspect, a compressor comprises the suction muffler described in any implementation of the first aspect or the second aspect.

[0015] In a fourth aspect, a refrigeration device comprises the compressor described in any implementation manner in the second aspect.

[0016] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of the present invention, the suction muffler includes a muffler body and a muffler assembly, and the muffler assembly is assembled on the muffler body, wherein by changing the assembly method of the muffler assembly on the muffler body or replacing different muffler assemblies, muffler solutions with different flow channel cross-sectional areas and different effective lengths of the conduit can be obtained, which greatly enriches the optionality of the muffler solution and very flexibly adapts to the characteristic requirements of different compressors. At the same time, the muffler assembly has a simple structure, small external dimensions, is easy to open the mold, and has a low mold opening cost, which can effectively reduce costs.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 1 is a schematic structural diagram of an embodiment of the air suction muffler of the present invention;

[0020] Figure 2It is an exploded view of the structure of an embodiment of the suction muffler of the present invention;

[0021] Figure 3 1 is a schematic structural diagram of a muffler back plate from a first perspective of an embodiment of an air suction muffler of the present invention;

[0022] Figure 4 2 is a schematic structural diagram of a muffler back plate of an embodiment of the air suction muffler of the present invention from a second viewing angle;

[0023] Figure 5 It is a schematic structural diagram of an embodiment of a muffler assembly of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a first assembly mode of a silencer assembly part of an embodiment of the suction silencer of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a second assembly method of a silencer assembly part of an embodiment of the suction silencer of the present invention;

[0026] Figure 8 is a schematic structural diagram of another embodiment of a muffler assembly of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of another embodiment of the muffler assembly of the present invention;

[0028] Fig.10 yes Fig. 9 An embodiment shown is assembled in a schematic diagram of the suction muffler structure. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0030] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention.

[0031] In the present invention, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present invention, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] See also Figure 1-Figure 8 The embodiment of the present invention provides an air suction muffler, including a muffler body 100 and a muffler assembly 200, wherein the muffler body 100 is provided with a muffler inlet 101 and a muffler outlet 102, a muffler cavity is formed inside the muffler body 100, the muffler body 100 is provided with a partition 105 for dividing the muffler cavity into a first sub-chamber 103 and a second sub-chamber 104, the partition 105 is provided with a first conduit wall 106, the first conduit wall 106 passes through the partition 105, the lengths of the first conduit wall 106 on both sides of the partition 105 are different, and the muffler body 100 is provided with a first conduit wall 106 on the first conduit wall 106. An assembly hole 107 is arranged on the outer side of the pipe wall 106, and the muffler assembly part 200 is assembled in the assembly hole 107. The muffler assembly part 200 is provided with a second conduit wall 201, and the second conduit wall 201 passes through the partition 105. The lengths of the second conduit wall 201 on both sides of the partition 105 are different. The first conduit wall 106 and the second conduit wall 201 are incomplete pipe structures cut along the length direction. After the muffler assembly part 200 is assembled in the assembly hole 107, the first conduit wall 106 and the second conduit wall 201 are spliced ​​to form a conduit that conducts the first sub-chamber 103 and the second sub-chamber 104. When the suction muffler is working, the refrigerant enters from the muffler inlet 101, then passes through the pipe course of the conduit, and finally is discharged from the muffler outlet 102, and the muffler cavity and the conduit are coordinated to achieve silencing.

[0034] In this embodiment, when assembled, if the second conduit wall 201 of the muffler assembly 200 is completely consistent with the first conduit wall 106 of the muffler body 100, that is, the longer end of the second conduit wall 201 on the side of the partition 105 corresponds to the longer end of the first conduit wall 106 on the side of the partition 105, and the shorter end of the second conduit wall 201 on the side of the partition 105 corresponds to the shorter end of the first conduit wall 106 on the side of the partition 105, see Figure 6 , then the effective length of the conduit is the largest, and the best noise reduction effect is obtained, but the gas flow resistance is the largest. When the silencer assembly 200 is turned upside down and assembled with the silencer body 100, the second conduit wall 201 of the silencer assembly 200 will not completely match the first conduit wall 106 of the silencer body 100, that is, the longer end of the second conduit wall 201 on the side of the partition 105 corresponds to the shorter end of the first conduit wall 106 on the side of the partition 105, and the shorter end of the second conduit wall 201 on the side of the partition 105 corresponds to the longer end of the first conduit wall 106 on the side of the partition 105, so the effective length of the combined conduit is the smallest, and the gas flow resistance is the smallest, the power consumption is the smallest, but the noise reduction effect is poor. When producing a compressor, different assembly methods of the silencer assembly 200 can be used according to the specific characteristics of the compressor to obtain silencer solutions with different flow channel cross-sectional areas and different effective lengths of the inner tube, which greatly enriches the optionality of the silencer solution and very flexibly adapts to the characteristics of different compressors. The present invention is easy to assemble, reliable to install, has a small number of parts, and has a low mold cost. Different combinations can be used according to product requirements to quickly achieve the needs of compressor noise reduction or efficiency improvement.

[0035] The muffler body 100 can be integrally formed or assembled.

[0036] In some embodiments, see Figure 2 , Fig.10 The muffler body 100 includes a muffler housing 108 and a muffler back plate 109. The muffler back plate 109 is assembled on the back side of the muffler housing 108 and forms a muffler cavity inside. The muffler inlet 101 is arranged on the muffler back plate 109 and communicates with the first sub-chamber 103. The muffler outlet 102 is arranged on the muffler housing 108 and communicates with the second sub-chamber 104. Among them, the partition 105 is formed on the muffler back plate 109 and extends to the muffler housing 108. The inner wall surface of the muffler housing 108 is provided with a first mounting groove 110 that matches the edge of the partition 105. The muffler housing 108 and the muffler back plate 109 form a good seal after matching to prevent gas leakage.

[0037] Further, in some embodiments, see Figure 2 , Figure 3The assembly hole 107 is provided on the muffler back plate 109, the partition plate 105 is provided with a concave notch on the inner side of the assembly hole 107, and the first conduit wall 106 is provided in the notch and connected to the partition plate 105. Figure 5-Figure 7 The muffler assembly 200 includes an assembly back plate 202, a second conduit wall 201 formed on the assembly back plate 202, the assembly back plate 202 is assembled in the assembly hole 107, the second conduit wall 201 is embedded in the notch, and is spliced ​​with the first conduit wall 106 to form a conduit connecting the first sub-chamber 103 and the second sub-chamber 104. In this embodiment, the muffler body 100 is provided with an assembly hole 107 on the muffler back plate 109, and the muffler assembly 200 is further assembled in the assembly hole 107, the muffler back plate 109 and the assembly back plate 202 cooperate to form a seal, the first conduit wall 106 and the second conduit wall 201 form a complete conduit, and the assembly of the muffler assembly 200 on the muffler body 100 is more convenient.

[0038] Among them, see Figure 2 , Figure 5 , Fig.10 Matching steps 203 and 111 are provided between the assembly back plate 202 and the muffler back plate 109. After the assembly back plate 202 and the muffler back plate 109 are matched, a good seal is formed to prevent gas leakage. The partition 105 is provided with a first matching groove 112 on the inner side of the notch, and the muffler assembly 200 is provided with a first matching convex edge 204 that matches the first matching groove 111, which plays a role of guiding and sealing to prevent gas leakage. The first conduit wall 106 is provided with a second matching groove 113 on the end face facing the assembly hole 107, and the second conduit wall 201 is provided with a second matching convex edge 205 that matches the second matching groove 113, which plays a role of sealing to prevent gas leakage.

[0039] In some embodiments, see Figure 4-Figure 7 The muffler assembly 200 is provided with a cantilever beam hook 206 extending along the assembly direction, and the top and bottom of the partition 105 are provided with a hook limiting boss 114 that can cooperate with the cantilever beam hook 206. During assembly, the cantilever beam hook 206 cooperates with the hook limiting boss 114 on the partition 105, and the cantilever beam hook is elastically lifted and then falls on the hook limiting boss 114, forming a good connection and playing a fixing role. By providing the hook limiting boss 114 on the top and bottom of the partition 105, it can meet the requirements of different installation methods, and the cantilever beam hook 206 of the muffler assembly 200 can cooperate with the hook limiting boss 114 to achieve fixed connection.

[0040] It is understandable that the muffler assembly 200 and the muffler body 100 may be fixedly connected by various methods such as bonding, fastener connection, etc.

[0041] See also Figure 5 , Figure 8 The second conduit wall 201 of the muffler assembly 200 can be a complete semicircle, or an incomplete semicircle, a trapezoid or a special shape. By manufacturing a plurality of different types of second conduit walls 201, and cooperating with the first conduit wall 106 of the muffler body 100, conduits with different flow channel cross-sectional areas are formed, and suction mufflers with different noise reduction performance or fluid resistance performance are obtained.

[0042] In some embodiments, see Fig. 9 , Fig.10 , circulation rings 207 are provided at both ends of the second conduit wall 201, and the inner diameter of the circulation ring 207 is smaller than the inner diameter of the conduit. When working, the refrigerant flows through the conduit, and the refrigerant gas first passes through the first circulation ring 207 with a small inner diameter, which plays the first noise reduction role, and then enters the conduit with a large inner diameter, reducing the gas flow resistance, and finally enters the second circulation ring 207 with a small inner diameter, which plays the second noise reduction role, and the noise reduction effect is greatly improved.

[0043] In some embodiments, see Figure 1 , Figure 4 The bottom of the muffler body 100 is provided with an oil leakage hole 115, and the bottom of the muffler body 100 is inclined toward the oil leakage hole 115, so that the lubricating oil inside the muffler is collected and stored at the lowest point, and discharged from the muffler cavity through the oil leakage hole 115. The outer wall surface of the muffler body 100 is provided with a sunken groove 116 at the oil leakage hole 115. The oil leakage hole 115 is blocked by the wall surface of the groove 116 of the muffler body 100, which plays a role in blocking the oil mist from entering the interior of the suction muffler, forming a hidden oil leakage hole 115, and reducing the additional blocking structure.

[0044] The invention also provides an air intake silencer, including a silencer body 100 and a silencer assembly 200. The silencer body 100 is provided with a silencer inlet 101 and a silencer outlet 102. A silencer chamber is formed inside the silencer body 100. The silencer body 100 is provided with a partition 105 which divides the silencer chamber into a first sub-chamber 103 and a second sub-chamber 104. The silencer body 100 is provided with an assembly hole 107 on the outer side of the partition 105. The silencer assembly 200 is assembled in the assembly hole 107. The silencer assembly 200 is provided with a conduit which passes through the partition 105 and connects the first sub-chamber 103 and the second sub-chamber 104. In this embodiment, the suction muffler includes a muffler body 100 and a muffler assembly 200, wherein the muffler assembly 200 is assembled on the muffler body 100, wherein the muffler assembly 200 can be provided with conduits of different structural forms, and muffler solutions with different flow channel cross-sectional areas and different effective lengths of conduits can be obtained by replacing different muffler assemblies 200, which greatly enriches the optionality of the muffler solution and very flexibly adapts to the characteristic requirements of different compressors. At the same time, the muffler assembly 200 is a simple structure, with a small size, easy to open the mold, and low mold opening cost, which can effectively reduce the cost.

[0045] The invention also provides a compressor, comprising the suction muffler in any of the above embodiments.

[0046] The invention also provides a refrigeration device, comprising the compressor in any of the above embodiments.

[0047] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A suction muffler, characterized in that: The utility model comprises a muffler body and a muffler assembly, wherein the muffler body is provided with a muffler inlet and a muffler outlet, a muffler cavity is formed inside the muffler body, the muffler body is provided with a partition for dividing the muffler cavity into a first sub-cavity and a second sub-cavity, the partition is provided with a first duct wall, the first duct wall passes through the partition, and the lengths of the first duct wall on both sides of the partition are different, the muffler body is provided with an assembly hole on the outer side of the first duct wall, the muffler assembly is assembled in the assembly hole, the muffler assembly is provided with a second duct wall, the second duct wall passes through the partition, and the lengths of the second duct wall on both sides of the partition are different, and the first duct wall and the second duct wall are spliced ​​to form a duct connecting the first sub-cavity and the second sub-cavity.

2. The suction muffler according to claim 1, characterized in that: The muffler body includes a muffler shell and a muffler back plate. The muffler back plate is assembled on the back side of the muffler shell and forms the muffler cavity inside. The partition is formed on the muffler back plate and extends toward the muffler shell. The inner wall surface of the muffler shell is provided with a first mounting groove that cooperates with the edge of the partition.

3. The suction muffler according to claim 2, characterized in that: The assembly hole is arranged on the muffler back plate, the partition is provided with a concave notch on the inner side of the assembly hole, the first duct wall is arranged in the notch, the muffler assembly comprises an assembly back plate, the second duct wall is formed on the assembly back plate, the assembly back plate is assembled to the assembly hole, the second duct wall is embedded in the notch, and is spliced ​​with the first duct wall to form a duct connecting the first sub-chamber and the second sub-chamber.

4. The suction muffler according to claim 3, characterized in that: A matching fitting step is provided between the back plate of the assembly and the back plate of the muffler, the partition is provided with a first fitting groove on the inner side of the notch, the muffler assembly is provided with a first fitting ridge matching with the first fitting groove, the first duct wall is provided with a second fitting groove on the end face facing the assembly hole, and the second duct wall is provided with a second fitting ridge matching with the second fitting groove.

5. The suction muffler according to claim 3, characterized in that: The muffler assembly is provided with a cantilever beam hook extending along the assembly direction, and the top and bottom of the partition are provided with a hook limiting boss capable of cooperating with the cantilever beam hook.

6. The suction muffler according to claim 1, characterized in that: Circulation rings are provided at both ends of the second conduit wall, and the inner diameter of the circulation rings is smaller than the inner diameter of the conduit.

7. The suction muffler according to claim 1, characterized in that: An oil leakage hole is arranged at the bottom of the muffler body, the bottom of the muffler body is inclined toward the oil leakage hole, and an inwardly sunken groove is arranged at the oil leakage hole on the outer wall surface of the muffler body.

8. An air suction muffler, characterized in that: The invention comprises a muffler body and a muffler assembly, wherein the muffler body is provided with a muffler inlet and a muffler outlet, a muffler chamber is formed inside the muffler body, the muffler body is provided with a partition which divides the muffler chamber into a first sub-chamber and a second sub-chamber, the muffler body is provided with an assembly hole on the outer side of the partition, the muffler assembly is assembled in the assembly hole, and the muffler assembly is provided with a conduit which passes through the partition and conducts the first sub-chamber and the second sub-chamber.

9. A compressor, characterized in that: The invention comprises the air intake silencer according to any one of claims 1 to 8.

10. A refrigeration device, characterized in that: Comprising the compressor as claimed in claim 9.

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