Compressor suction muffler

Abstract

This invention relates to a compressor intake silencing device, belonging to the technical field of compressor silencing accessories. It includes: a silencing box for housing the compressor, the silencing box having independently distributed airflow buffer chambers and resonance silencing chambers internally, and an intake channel connecting the airflow buffer chambers and resonance silencing chambers; the compressor is placed inside the resonance silencing chamber; the side wall of the silencing box corresponding to the airflow buffer chamber has multiple intake holes arranged in a honeycomb pattern at intervals, and the top of the silencing box corresponding to the resonance silencing chamber has an outlet hole. This invention utilizes the honeycomb-shaped small-diameter intake holes to enhance the throttling pressure drop effect, thereby increasing the intake air velocity and reducing the gas specific volume, thus improving the compressor's unit volume cooling capacity; simultaneously, the front and rear separation of the airflow buffer chamber and the resonance silencing chamber effectively buffers high-speed pulsating airflow and suppresses turbulence and regenerated noise, achieving the dual benefits of rapid intake and efficient silencing.

Description

Technical Field

[0001] This invention relates to the field of compressor noise reduction accessories, and in particular to a compressor intake noise reduction device. Background Technology

[0002] As the core power component of refrigeration systems such as refrigerators and air conditioners, the compressor needs to continuously draw in low-temperature, low-pressure refrigerant gas through its suction port during operation. However, the high-speed airflow pulsation and mechanical vibration inside the compressor generate noise, which is easily radiated outward through the suction channel, becoming one of the main sources of noise in the refrigeration equipment. To suppress the propagation of noise on the suction side, existing technologies typically incorporate a silencer at the suction port. Common structures include a single expansion chamber or an internal tube, utilizing abrupt changes in cross-section or the principle of sound wave interference to attenuate noise in specific frequency bands.

[0003] However, the above-mentioned silencers have the following two technical limitations in practical applications: First, in terms of the design of the air inlet, existing silencers mostly adopt open-type or large-diameter grilles. Although this form is simple in structure, the large gas inflow cross section leads to a low and uneven airflow velocity. At the same time, due to the large area of ​​a single hole, the throttling pressure drop effect when the gas passes through is not obvious, and the increase in flow velocity is limited, resulting in a relatively large specific volume of gas entering the compressor, which to some extent restricts the effective improvement of the compressor's unit volume cooling capacity. Second, in terms of the internal cavity layout, the existing silencer structure is relatively simple. Although a single expansion cavity can attenuate specific narrowband noise, it is not strong enough to suppress broadband turbulence and airflow regeneration noise caused by high-speed airflow. Especially when the compressor is under high load and the intake flow rate increases significantly, the airflow turbulence inside the single cavity intensifies, making it difficult to take into account both the functions of airflow buffering and sound energy attenuation. Instead, it is easy to cause eddy current loss or secondary noise radiation, making the contradiction between noise reduction performance and intake efficiency increasingly prominent.

[0004] Therefore, how to design a compressor intake silencer that can both avoid the loss of intake energy and effectively reduce the operating noise of the compressor is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a compressor suction silencing device, which solves the technical problem that existing compressor suction silencing devices cannot simultaneously achieve rapid suction and efficient silencing.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a compressor suction silencing device, comprising: a silencing box for holding the compressor, wherein the silencing box has independently distributed airflow buffer chamber and resonance silencing chamber and has an air intake channel connecting the airflow buffer chamber and the resonance silencing chamber; the compressor is placed in the resonance silencing chamber; the silencing box is provided with a plurality of air intake holes arranged in a honeycomb pattern on the side wall corresponding to the airflow buffer chamber and an air outlet hole is provided at the top of the resonance silencing chamber, so that outside air is first drawn into the airflow buffer chamber through the plurality of air intake holes, and then the air in the airflow buffer chamber is drawn into the resonance silencing chamber through the air intake channel.

[0007] The beneficial effects of this invention are as follows: By setting independent airflow buffer chambers and resonance silencing chambers inside the silencer box, and opening honeycomb-shaped spaced air intake holes on the side wall of the airflow buffer chamber, on the one hand, multiple small-diameter air intake holes replace the traditional large-diameter open structure, increasing the throttling pressure drop effect when the gas flows in, thereby effectively increasing the refrigerant gas flow rate and reducing the gas specific volume, which is beneficial to increasing the compressor's unit volume cooling capacity; on the other hand, the honeycomb arrangement makes the intake distribution more uniform, avoiding eddy losses caused by local velocity concentration, and suppressing intake pulsating noise radiation from the source; in addition, by using the front and rear separation arrangement of the airflow buffer chamber and the resonance silencing chamber, the airflow first passes through the buffer chamber for expansion and deceleration before entering the compressor intake port, and then enters the resonance silencing chamber after being guided by the intake channel. This can not only avoid intake flow loss and effectively buffer high-speed pulsating airflow, but also reduce the compressor's operating noise while suppressing turbulent noise and airflow regeneration noise in the resonance silencing chamber, thereby making the airflow more stable and orderly.

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

[0009] Furthermore, the silencer box is also provided with an independently distributed diversion silencer chamber inside between the airflow buffer chamber and the resonance silencer chamber, and the diversion silencer chamber is located above the air intake channel; the silencer box is provided with a vent hole on the pipe wall corresponding to the air intake channel, which communicates with the diversion silencer chamber, so as to divert the large flow of air drawn in from the air intake channel.

[0010] The further beneficial effects of adopting the above are as follows: by adding an independently distributed diversion silencer chamber and arranging it above the intake channel, and using the vent holes on the intake channel wall to connect with the intake channel, when the compressor is under high load or the intake flow rate increases significantly, some of the excess airflow can be diverted into the diversion silencer chamber through the vent holes for expansion, pressure reduction and sound energy attenuation. This effectively avoids the problems of excessive flow velocity, increased pressure pulsation and local eddy current loss caused by the accumulation of large flow of air in the intake channel. Thus, while ensuring sufficient intake volume of the compressor, it significantly reduces the impact noise of high-speed airflow on the cavity wall and the noise generated by turbulence.

[0011] Furthermore, the silencer also includes a handle, the bottom end of which is fixed to the top of the cover.

[0012] Furthermore, it also includes a vent pipe and a capacity-enhancing shell. One open end of the vent pipe is inserted into the air outlet of the silencer box. The interior of the capacity-enhancing shell is a capacity-enhancing and silencing cavity, and its shell wall is provided with a connection hole and an exhaust hole. The other open end of the vent pipe is fixedly connected to the connection hole of the capacity-enhancing shell.

[0013] The further beneficial effects of the above are: by adding a vent pipe and an expansion shell, the airflow discharged from the vent of the silencer box is introduced into the expansion and silencer chamber inside the expansion shell through the vent pipe. The abrupt change in the cross-section of the expansion and silencer chamber is used to perform secondary expansion and pressure reduction on the airflow on the outlet side and attenuate the sound wave reflection, which effectively suppresses the noise radiation from the outlet caused by the compressor exhaust pulsation and high-speed airflow, and further reduces the operating noise of the compressor. Attached Figure Description

[0014] Figure 1 This is a front-view three-dimensional structural diagram of a compressor suction silencer according to the present invention;

[0015] Figure 2 This is a rear-view three-dimensional structural diagram of a compressor suction silencer according to the present invention; Figure 3 This is a schematic diagram of the internal structure of a compressor suction silencer according to the present invention; Figure 4 This is a three-dimensional structural diagram of the cover in a compressor suction silencer according to the present invention; Figure 5 This is a three-dimensional structural diagram of the housing in a compressor suction silencer according to the present invention.

[0016] The attached diagram lists the components represented by each number as follows: 1. Silencer box; 11. Airflow buffer chamber; 12. Resonance silencing chamber; 13. Intake channel; 14. Intake hole; 15. Diversion silencing chamber; 16. Box body; 17. Box cover; 18. First partition; 19. Second partition; 110. Handle; 111. Vent hole; 2. Vent pipe; 3. Capacity-enhancing shell. Detailed Implementation

[0017] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0018] like Figure 1 , Figure 2 and Figure 3As shown, a compressor intake silencing device includes: a silencing box 1 for housing the compressor, the silencing box 1 having independently distributed airflow buffer chamber 11 and resonance silencing chamber 12 inside, and an intake channel 13 connecting the airflow buffer chamber 11 and the resonance silencing chamber 12 inside; the compressor is placed in the resonance silencing chamber 12; the silencing box 1 has a plurality of honeycomb-shaped air intake holes 14 on the side wall corresponding to the airflow buffer chamber 11, and an air outlet is provided at the top of the resonance silencing chamber 12, so that outside air is first drawn into the airflow buffer chamber 11 through the plurality of air intake holes 14, and then the air in the airflow buffer chamber 11 is drawn into the resonance silencing chamber 12 through the intake channel 13.

[0019] like Figure 3 As shown, in some specific embodiments, the silencer box 1 is further provided with an independently distributed diversion silencer 15 inside between the airflow buffer chamber 11 and the resonance silencer 12. The diversion silencer 15 is located above the air intake channel 13. The silencer box 1 is provided with a vent hole 111 on the pipe wall corresponding to the air intake channel 13, which communicates with the diversion silencer 15, so as to divert the large flow of air drawn into the air intake channel 13.

[0020] like Figure 4 and Figure 5 As shown, in some specific embodiments, the silencing box 1 may include a box body 16, a box cover 17, a first partition 18 and a second partition 19. The box body 16 is hollow inside and has an opening at its top and an open hole on its side wall. The box cover 17 covers the opening of the box body 16 and closes the open hole. The first partition 18 and the second partition 19 are arranged along the height direction of the box body 16 and fixed at intervals inside the box body 16. The airflow buffer cavity 11 is the area between the box body 16, the first partition 18 and the box cover 17. The diversion silencing cavity 15 is the area between the first partition 18, the second partition 19, the box body 16 and the box cover 17. The resonance silencing cavity 12 is the area between the second partition 19, the box body 16 and the box cover 17. A plurality of honeycomb-shaped air intake holes 14 are provided on the side wall of the box cover 17 corresponding to the open hole. The air intake channel 13 is provided inside the box body 16. The air outlet is provided on the box cover 17.

[0021] like Figure 1 and Figure 2 As shown, the muffler box 1 also includes a handle 110, the bottom end of which is fixed to the top of the box cover 17.

[0022] like Figure 3 and Figure 4 As shown, it may also include a vent pipe 2 and a capacity-enhancing shell 3. One open end of the vent pipe 2 is inserted into the air outlet of the silencer box 1. The interior of the capacity-enhancing shell 3 is a capacity-enhancing and silencing cavity, and its shell wall is provided with a connection hole and an exhaust hole. The other open end of the vent pipe 2 is fixedly connected to the connection hole of the capacity-enhancing shell 3.

[0023] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compressor intake silencer, characterized in that, include: The silencer box (1) is used to hold the compressor. The silencer box (1) has an independently distributed airflow buffer chamber (11) and a resonance silencer chamber (12) inside, and has an air intake channel (13) connecting the airflow buffer chamber (11) and the resonance silencer chamber (12). The compressor is placed in the resonance silencer chamber (12). The silencer box (1) has a plurality of air intake holes (14) arranged in a honeycomb pattern on the side wall corresponding to the airflow buffer chamber (11) and an air outlet hole corresponding to the top of the resonance silencer chamber (12). The outside air is first drawn into the airflow buffer chamber (11) through the plurality of air intake holes (14), and then the air in the airflow buffer chamber (11) is drawn into the resonance silencer chamber (12) through the air intake channel (13).

2. The compressor intake silencer according to claim 1, characterized in that, The silencer box (1) is further provided with an independently distributed diversion silencer chamber (15) inside between the airflow buffer chamber (11) and the resonance silencer chamber (12). The diversion silencer chamber (15) is located above the air intake channel (13). The silencer box (1) is provided with a vent (111) on the pipe wall of the air intake channel (13) that communicates with the diversion silencer chamber (15) to divert the large flow of air drawn into the air intake channel (13).

3. The compressor suction silencing device according to claim 2, characterized in that, The silencer box (1) includes a box body (16), a box cover (17), a first partition (18), and a second partition (19). The box body (16) is hollow inside and has an opening at its top and an open hole on its side wall. The box cover (17) covers the opening of the box body (16) and closes the open hole. The first partition (18) and the second partition (19) are arranged along the height direction of the box body (16) and fixed at intervals inside the box body (16). The airflow buffer chamber (11) is composed of the box body (16), the first partition (18), and the second partition (19). The area between the box cover (17); the diversion silencing cavity (15) is the area between the first partition (18), the second partition (19), the box body (16) and the box cover (17); the resonance silencing cavity (12) is the area between the second partition (19), the box body (16) and the box cover (17); a plurality of honeycomb-shaped air intake holes (14) are provided on the side wall of the box cover (17) corresponding to the opening; the air intake channel (13) is provided in the box body (16); the air outlet is provided on the box cover (17).

4. A compressor suction silencing device according to claim 3, characterized in that, The silencer box (1) also includes a handle (110), the bottom end of which is fixed to the top of the box cover (17).

5. A compressor intake silencer according to claim 1, characterized in that, It also includes a vent pipe (2) and a capacity-enhancing shell (3). One open end of the vent pipe (2) is inserted into the air outlet of the silencer box (1). The interior of the capacity-enhancing shell (3) is a capacity-enhancing and silencing cavity, and its shell wall is provided with a connection hole and an exhaust hole. The other open end of the vent pipe (2) is fixedly connected to the connection hole of the capacity-enhancing shell (3).

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