Silencer for compressor

Abstract

The silencer for the compressor comprises an upper shell and a lower shell, and the upper shell and the lower shell are buckled with each other to define a cavity. A partition plate divides the cavity into a first cavity and a second cavity which are independent, and the volume of the second cavity is larger than that of the first cavity. The air inlet channel is communicated with the first cavity, and the exhaust channel is communicated with the second cavity; the compressor further comprises a communicating channel which communicates the first cavity with the second cavity, and noise generated by high-pressure fluid pulsation exhaust of the compressor can be remarkably reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of silencer components, in particular to a silencer for a compressor. Background Art

[0002] When the compressor is working, due to the characteristics of its working principle, there is inevitably noise influence. The noise of the compressor is generated in many aspects, including airflow noise, mechanical noise and electromagnetic noise. Among them, airflow noise is often more significant. Airflow noise is a major noise source of the compressor, and this noise is mainly caused by the pulsation of high-pressure fluid discharged from the compression chamber. At present, a muffler is often connected to the exhaust port of the compressor to reduce the airflow noise. The current muffler is often unreasonable in structure design, which often leads to its large size or unsatisfactory silencing effect, which is extremely inconvenient for use in some equipment with small installation space. Summary of the invention

[0003] The utility model aims to provide a muffler for a compressor, which is intended to eliminate or reduce the airflow noise of the compressor during operation.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] A silencer for a compressor comprises an upper shell and a lower shell, which are interlocked to enclose a cavity; a partition separates the cavity into an independent first cavity and a second cavity, and the volume of the second cavity is greater than the volume of the first cavity; it also includes an air intake channel and an exhaust channel, the air intake channel is connected to the first cavity, and the exhaust channel is connected to the second cavity; it also includes a connecting channel, which connects the first cavity and the second cavity.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the outlet end of the exhaust channel is trumpet-shaped, and the inlet end extends into the second cavity by a set length.

[0007] On the basis of the above solution and as a preferred solution of the above solution: a connecting joint is extended out of the cavity from one end of the air inlet channel.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a first balancing hole is provided between the first cavity and the second cavity to connect the two, and a second balancing hole is provided between the second cavity and the outside.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the lower shell is provided with a continuous groove on the end face connected to the upper shell, and the upper shell is provided with a continuous ridge protruding on the corresponding end face, and after the upper shell is buckled with the lower shell, the ridge is embedded in the groove.

[0010] On the basis of the above solution and as a preferred solution of the above solution: the groove is coated or filled with an adhesive.

[0011] On the basis of the above solution and as a preferred solution of the above solution: the upper shell and the lower shell are both injection molded.

[0012] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects: after the injection-molded upper shell and lower shell are snap-fitted and assembled, a first cavity and a second cavity are formed, and the volume of the second cavity is much larger than that of the first cavity. Since the volume of the first cavity is larger than that of the intake passage, when the gas enters the first cavity from the intake passage, the volume will expand rapidly, the pressure will decrease, and the flow rate will slow down; when the gas enters the second cavity from the first cavity through the connecting passage, similarly, the volume of the second cavity is much larger than that of the first cavity, the pressure of the gas continues to decrease, and the flow rate continues to slow down; when the gas is discharged from the second cavity to the atmosphere through the exhaust passage, the pressure and flow rate are already relatively slow at this time, and the pressure is further expanded and reduced through the trumpet-shaped exhaust port, thereby significantly reducing the noise generated by the pulsating exhaust of the high-pressure fluid of the compressor; in addition, by snap-fitting and assembling the upper and lower shells formed by injection molding, the efficiency of producing the muffler is improved, and the cost is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the overall structure of the utility model from another angle;

[0015] Figure 3 2. It is a schematic diagram of the structure of the lower cover;

[0016] Figure 4 It is a schematic diagram of the upper cover structure. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution in the embodiment will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of this application, not all embodiments. Based on the given embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0018] In the description of the present application, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0020] Combination Figure 1-4 As shown, the present application discloses a compressor silencer, comprising an upper shell 10 and a lower shell 20, which are buckled together to enclose a closed cavity; a partition 11 is arranged in the upper shell 10, and the partition 11 separates the space of the upper shell 10 into a first space 10a and a second space 10b, and the lower shell 20 is also separated into a first lower space 20a and a second lower space 20b by a raised separation groove 20c, and after the upper shell 10 and the lower shell 20 are buckled together, the partition 11 separates the cavity into an independent first cavity and a second cavity (The upper edge of the partition 11 will be embedded in the partition groove 20c and correspond to the first space 10a and the second space 10b), since the second space 10b is much larger than the first space 10a, the volume of the second cavity is bound to be larger than the volume of the first cavity; it also includes an intake channel 21 and an exhaust channel 22 arranged on the lower shell, the outlet 214 of the intake channel 21 is connected to the first cavity, and the exhaust channel 22 is connected to the second cavity; it also includes a connecting channel 12 arranged on the upper shell 10, the connecting channel 12 passes through the partition 11, and connects the first cavity and the second cavity. In this embodiment, it is further preferred that the outlet end 222 of the exhaust channel 22 is trumpet-shaped, and the inlet end 221 extends into the second cavity by a set length. One end of the intake channel 21 extends a connecting joint outside the cavity; and a positioning ridge 211 is symmetrically arranged on the side of the connecting joint to facilitate the connection and positioning with the compressor pipeline in the later stage. Similarly, a plurality of positioning columns 212 are also arranged, which also play the role of positioning with the compressor pipeline.

[0021] In addition, in order to further control the peak value of the high-pressure fluid pulsation, in the present embodiment, a first balancing hole 14 is provided between the first cavity and the second cavity to connect the two, and a second balancing hole 15 is provided between the second cavity and the outside. By providing the first balancing hole 14 and the second balancing hole 15, the first cavity and the second cavity are kept connected to the external atmosphere, thereby reducing the peak value of the high-pressure fluid pulsation and keeping the pressures of the first cavity and the second cavity balanced to a certain extent.

[0022] In order to realize the production of the silencer of the present application, in this embodiment, it is preferred that both the upper shell 10 and the lower shell 20 are plastic (nylon) injection molded; of course, in order to realize reliable connection and sealing between the upper shell and the lower shell, in this embodiment, a continuous groove 23 is arranged on the end face 24 of the lower shell 20 connected to the upper shell 10, and a continuous ridge 13 is raised on the corresponding end face 131 of the upper shell 10, that is, the groove 23 and the ridge 13 are respectively arranged on the connecting surface contour of the lower shell 20 and the upper shell 10 (the partition 11 is inserted into the raised separation groove 20c), then after the upper shell 10 and the lower shell 20 are buckled (after buckling, the continuous connection seam a is seen from the outside), the ridge 13 is embedded in the groove 23, and an independent first cavity and a second cavity are separated. Of course, it is difficult to realize reliable connection between the two by just buckling, for this reason, in this embodiment, it is preferred that the groove 23 is coated or filled with an adhesive, and then the upper shell is buckled on the lower shell, and the ridge 13 will be bonded and fixed in the groove 23, thereby realizing reliable connection.

[0023] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A muffler for a compressor, characterized in that: It includes an upper shell and a lower shell, which are buckled together to enclose a cavity; a partition separates the cavity into an independent first cavity and a second cavity, and the volume of the second cavity is greater than the volume of the first cavity; it also includes an air intake channel and an exhaust channel, the air intake channel is connected to the first cavity, and the exhaust channel is connected to the second cavity; it also includes a connecting channel, which connects the first cavity and the second cavity.

2. A compressor muffler according to claim 1, characterized in that: The outlet end of the exhaust passage is trumpet-shaped, and the inlet end extends into the second cavity by a set length.

3. A compressor muffler according to claim 1, characterized in that: One end of the air inlet passage extends out of the cavity to form a connecting joint.

4. A compressor muffler according to claim 1, characterized in that: A first balancing hole is provided between the first cavity and the second cavity to connect the two, and a second balancing hole is provided between the second cavity and the outside.

5. A compressor muffler according to claim 1, characterized in that: The lower shell is provided with a continuous groove on the end surface connected to the upper shell, and the upper shell is provided with a continuous ridge on the corresponding end surface. After the upper shell is buckled with the lower shell, the ridge is embedded in the groove.

6. A compressor muffler according to claim 5, characterized in that: The groove is coated or filled with adhesive.

7. A compressor muffler according to claim 1, characterized in that: The upper shell and the lower shell are both injection molded.

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