High-efficiency air suction silencer for compressor

Abstract

The utility model relates to a kind of high-efficiency suction silencing device for compressor, belong to compressor suction silencing device technical field, comprising: sound-absorbing box, suction pipe and refrigerant pipe, one end of suction pipe passes through and inserts into sound-absorbing cavity in insertion hole, the inner hole of suction pipe is divided into inlet taper hole section, intermediate throat hole section and outlet taper hole section from far away sound-absorbing box to the direction of insertion sound-absorbing box in turn, the diameter of inlet taper hole section is reduced from far away sound-absorbing box to the direction of close to sound-absorbing box in turn, refrigerant pipe is arranged along the height direction of sound-absorbing box and its bottom end is fixed and communicated at air hole.The utility model divides the inner hole of suction pipe from far away sound-absorbing box to the direction of insertion sound-absorbing box into inlet taper hole section, intermediate throat hole section and outlet taper hole section in turn, constitutes venturi structure, because intermediate throat hole section sectional area reduces, flow velocity increases, pressure reduces, drive external refrigerant to enter from air hole, accelerate gas-liquid mixing efficiency, improve suction silencing efficiency of suction pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of compressor suction silencer devices, and in particular to a high-efficiency suction silencer device for compressors. Background Technology

[0002] The development of compressors tends towards miniaturization and higher efficiency. As compressors become smaller, their overall intake efficiency decreases due to structural limitations, leading to increased noise. The intake silencer is a crucial component of the compressor, primarily responsible for improving overall intake efficiency and eliminating multi-frequency noise. Miniaturization of the compressor affects the volume of the intake silencer, consequently impacting overall intake efficiency and multi-frequency noise. Currently, miniaturized silencer designs, while maintaining a smaller internal volume, still aim to eliminate multi-frequency noise. This often employs a multi-stage silencer structure, resulting in a significant sacrifice in intake efficiency.

[0003] The design of the inlet cross-sectional area of ​​common silencers needs to consider both intake efficiency and noise levels. While minimizing noise, the inlet is typically not designed to be very large. However, this small cross-sectional area ultimately affects the compressor's intake efficiency, resulting in insufficient gas-liquid mixture entering the intake silencer chamber. This hinders adequate heat exchange to improve compressor efficiency. Furthermore, in miniaturized and high-efficiency compressors, the intake port of the silencer chamber is reduced due to the overall size of the unit, further shrinking the inlet. This makes it more difficult to design a multi-stage internal silencer structure to eliminate multi-frequency noise, further throttling the airflow and causing a more significant decrease in intake efficiency. Consequently, compressor efficiency is wasted, making it difficult to achieve truly high-efficiency compressors.

[0004] Therefore, how to design a miniaturized and efficient compressor intake silencer is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a high-efficiency suction silencer for compressors, solving the technical problems of low suction efficiency and low silencer efficiency in existing miniaturized compressor silencers.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a high-efficiency suction silencer for a compressor, comprising: a silencer box, a suction pipe, and a refrigerant pipe. The interior of the silencer box is a silencing cavity, and its side wall is provided with a insertion hole. The axis of the intake pipe is arranged at an angle α with the height direction of the silencer box, and one end of the intake pipe extends into the silencing cavity through the insertion hole. The inner hole of the intake pipe is divided into an inlet cone section, an intermediate throat section, and an outlet cone section from the direction away from the silencer box to the direction of insertion into the silencer box. The diameter of the inlet cone section decreases from the direction away from the silencer box to the direction of insertion into the silencer box. The diameter of the intermediate throat section is smaller than the diameter of the small end of the inlet cone section. The diameter change direction of the outlet cone section is opposite to that of the inlet cone section. The intake pipe is provided with a vent hole on the upper side wall corresponding to the intermediate throat section. The refrigerant pipe is arranged along the height direction of the silencer box, and its bottom end is fixed and connected to the vent hole.

[0007] The beneficial effects of this utility model are as follows: The inner hole of the intake pipe is divided into an inlet cone section, a middle throat section, and an outlet cone section from the direction away from the silencer box to the direction of insertion into the silencer box, forming a Venturi tube structure (according to the continuity equation of fluid, the flow rate of fluid in the pipe is constant. When the cross-sectional area of ​​the pipe decreases, the flow velocity of the fluid must increase to keep the flow rate constant). The vent hole added in the middle throat section, due to the decrease in the cross-sectional area of ​​the middle throat section, the flow velocity increases and the pressure decreases, which drives the external refrigerant to enter through the vent hole, accelerates the gas-liquid mixing efficiency, greatly improves the airflow velocity of the intake pipe, and improves the intake efficiency of the intake pipe. Without affecting the noise reduction, the intake silencing efficiency of the intake silencing device is improved.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the included angle α is 30 to 60°.

[0010] Furthermore, the taper of the inlet cone section is 10–15°.

[0011] Furthermore, the taper of the outlet conical section is 5–7°. Furthermore, the diameter of the small end of the inlet cone section is twice the diameter of the intermediate throat section. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a high-efficiency suction silencer for a compressor according to the present invention; Figure 2 This is a half-sectional structural diagram of a high-efficiency suction silencer for a compressor according to the present invention.

[0013] The attached diagram lists the components represented by each number as follows: 1. Silencer box; 11. Silencer chamber; 2. Intake pipe; 21. Inlet cone section; 22. Middle throat section; 23. Outlet cone section; 3. Refrigerant pipe. Detailed Implementation

[0014] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0015] like Figure 1 As shown, a high-efficiency suction silencer for a compressor includes: a silencer box 1, a suction pipe 2, and a refrigerant pipe 3. The interior of the silencer box 1 is a silencer cavity 11, and its side wall is provided with a plug hole; the axis of the intake pipe 2 is arranged at an angle α with the height direction of the silencer box 1, and one end of it passes through the plug hole and extends into the silencer cavity 11. The inner hole of the intake pipe 2 is divided into an inlet cone section 21, an intermediate throat section 22 and an outlet cone section 23 in sequence from the direction away from the silencer box 1 to the direction of insertion into the silencer box 1. The diameter of the inlet cone section 21 decreases in sequence from the direction away from the silencer box 1 to the direction close to the silencer box 1. The diameter of the intermediate throat section 22 is smaller than the diameter of the small end of the inlet cone section 21. The diameter change direction of the outlet cone section 23 is opposite to the diameter change direction of the inlet cone section 21. The intake pipe 2 is provided with a vent hole on the upper side wall corresponding to the intermediate throat section 22. The refrigerant pipe 3 is arranged along the height direction of the silencer box 1 and its bottom end is fixed and connected to the vent hole.

[0016] Specifically, the included angle α can be 30 to 60°.

[0017] Specifically, the taper of the inlet cone section 21 can be 10 to 15 degrees.

[0018] Specifically, the taper of the outlet cone section 23 can be 5–7°. In some specific embodiments, the diameter of the small end of the inlet cone section 21 can be twice the diameter of the intermediate throat section 22.

[0019] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-efficiency suction silencer for a compressor, characterized in that, include: The silencing box (1) has a silencing cavity (11) inside and its side wall is provided with a plug hole; The suction pipe (2) is arranged at an angle α with the height direction of the silencer box (1), and one end of the suction pipe (2) extends into the silencer cavity (11) through the insertion hole. The inner hole of the suction pipe (2) is divided into an inlet cone hole section (21), an intermediate throat hole section (22) and an outlet cone hole section (23) from the direction away from the silencer box (1) to the direction of insertion into the silencer box (1). The diameter of the inlet cone hole section (21) decreases from the direction away from the silencer box (1) to the direction close to the silencer box (1). The diameter of the intermediate throat hole section (22) is smaller than the diameter of the small end of the inlet cone hole section (21). The diameter change direction of the outlet cone hole section (23) is opposite to the diameter change direction of the inlet cone hole section (21). The refrigerant pipe (3) has a vent hole on the upper side wall of the intake pipe (2) corresponding to the middle throat section (22). The refrigerant pipe (3) is arranged along the height direction of the silencer box (1) and its bottom end is fixed and connected to the vent hole.

2. The high-efficiency suction silencer for a compressor according to claim 1, characterized in that, The included angle α is 30 to 60°.

3. The high-efficiency suction silencer for a compressor according to claim 1, characterized in that, The taper of the inlet cone section (21) is 10 to 15 degrees.

4. The high-efficiency suction silencer for a compressor according to claim 1, characterized in that, The taper of the outlet cone section (23) is 5 to 7 degrees.

5. The high-efficiency suction silencer for a compressor according to claim 1, characterized in that, The diameter of the small end of the inlet cone section (21) is twice the diameter of the intermediate throat section (22).

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