Air suction silencer of compressor

Abstract

The air suction silencer comprises a cavity and a communicating pipe installed in an inner cavity of the cavity, the cavity is provided with an air outlet and an air inlet, the outlet end of the communicating pipe is arranged at the air outlet, and the pipe wall of the outlet end is provided with an open first heat insulation groove in the extending direction; the inlet end of the communicating pipe is arranged at the air inlet, and an open second heat insulation groove is formed in the pipe wall of the inlet end of the communicating pipe in the extending direction. According to the air suction silencer provided by the utility model, the heat conduction effect of heat in the silencer on a refrigerant entering the communicating pipe can be reduced, the air suction efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of compressor equipment, in particular to a compressor suction muffler. Background Art

[0002] In a fully enclosed compressor, a suction muffler is included inside. A connecting pipe is provided in the cavity of the suction muffler. One end of the connecting pipe is connected to the inlet of the muffler cavity, and the other end is connected to the outlet of the muffler cavity. In order to take into account the silencing effect, there is usually a certain distance between the connecting pipe and the inlet and outlet of the suction muffler cavity. During the movement of the compressor, the refrigerant discharged from the evaporator first enters the inner cavity of the suction muffler through the inlet of the suction muffler cavity, and then enters the cylinder from the outlet. However, since the gas temperature in the inner cavity of the suction muffler is relatively high, the refrigerant gas will exchange heat with the gas in the inner cavity of the suction muffler during the process of entering the connecting pipe, causing the gas temperature in the suction cylinder to increase, which in turn causes the gas density in the suction cylinder to decrease, resulting in a decrease in the suction efficiency and increased energy consumption. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a compressor suction muffler, which can reduce the heat conduction effect of the internal heat of the muffler on the refrigerant entering the connecting pipe, improve the suction efficiency and reduce energy consumption.

[0004] The utility model is realized through the following technical solutions:

[0005] A compressor suction muffler comprises a cavity and a connecting pipe installed in the inner cavity of the cavity, the cavity is provided with an air outlet and an air inlet, the outlet end of the connecting pipe is placed at the air outlet, and an open first insulation groove is provided on the pipe wall of the outlet end along the extension direction; the inlet end of the connecting pipe is placed at the air inlet, and an open second insulation groove is provided on the pipe wall of the inlet end of the connecting pipe along the extension direction; in the present technical scheme, the first insulation groove and the second insulation groove can form an insulation cavity on the pipe wall, and when the compressor is working, part of the refrigerant can be retained in the insulation cavity to form an insulation layer to slow down the heat conduction of the refrigerant in the heat connecting pipe in the muffler to avoid the occurrence of suction overheating, and the first insulation groove and the second insulation groove are both open structures, which can facilitate the noise inside the muffler to enter therein, and reflect and interfere with the noise of different frequency bands, thereby reducing the capacity of the sound wave and achieving the effect of noise reduction.

[0006] Preferably, an expansion pipe section is provided at the outlet end of the connecting pipe, and an open third insulation groove is provided on the tube wall of the expansion pipe section; in the present technical solution, the expansion pipe section can utilize the multi-stage pressure reduction principle to improve the gas guiding buffering effect, weaken the air flow pulsation, and reduce the noise and vibration generated by the gas pulsation on the pipeline.

[0007] Preferably, the connecting pipe is a right-angle bend structure, including a horizontal straight pipe section, a vertical straight pipe section and a right-angle bend pipe section; in the present technical solution, the connecting pipe is a right-angle bend structure, which can maximize the reflection and interference of noise entering the connecting pipe, improve the noise reduction effect, and structurally facilitate the design of the connecting pipe mold.

[0008] Preferably, connecting ribs are provided in both the first insulation groove and the second insulation groove; in the present technical solution, the connecting ribs can not only enhance the overall structural strength of the connecting pipe, but also divide the insulation groove into a number of open unit grooves of different sizes, so as to form reflection and interference phenomena for noises of different frequency bands, thereby reducing the capacity of sound waves and improving the noise reduction effect.

[0009] Preferably, the cavity includes an upper cavity and a lower cavity, the lower edge of the upper cavity is provided with a snap-in groove, the upper edge of the lower cavity is provided with a snap-in plate, and the snap-in plate is adapted to the snap-in groove; in the present technical solution, the snap-in groove and the snap-in plate can facilitate the connection and fixation between the upper cavity and the lower cavity, and the snap-in plate is inserted into the snap-in groove, which can improve the sealing of the connection between the upper cavity and the lower cavity.

[0010] Further preferably, the expansion tube section is a square tube structure, a positioning step is provided in the inner cavity of the lower cavity, a positioning plate is provided in the inner cavity of the upper cavity, the positioning plates are evenly distributed around the circumference of the expansion tube section, and the positioning plates are provided with right-angle snap-ons; the expansion tube section is fixed between the positioning plate and the positioning step; in the present technical solution, the expansion tube section is fixed between the positioning plate and the positioning step to form a silencer channel inside the silencer cavity, and compared with the structure of a traditional suction silencer, its fixed connection structure is simple and the manufacturing cost is low.

[0011] Preferably, an elastic groove is provided on the lower edge of the upper cavity; in the present technical solution, the elastic groove can provide a deformation space to facilitate the docking and installation of the lower edge of the upper cavity with the upper cavity.

[0012] The beneficial effects of the utility model are: 1. A heat-insulating groove is provided on the connecting pipe of the suction muffler, which can slow down the heat conduction of the refrigerant in the heat connecting pipe in the muffler and avoid the occurrence of suction overheating; 2. The heat-insulating groove of the connecting pipe of the suction muffler is an open structure, and connecting ribs are provided in the insulation cavity, which divide the insulation cavity into a number of longitudinally arranged unit cavities, which can effectively reduce the noise generated by the pump body and other parts in the compressor; 3. The connecting pipe of the suction muffler is clamped between the upper cavity and the lower cavity by a positioning step and a positioning plate. Compared with the structure of the traditional suction muffler, its fixed connection structure is simple, easy to install and low in production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the three-dimensional structure of a compressor suction muffler described in Example 1;

[0014] Figure 2 It is a schematic cross-sectional structural diagram of the upper cavity and the connecting pipe described in Example 1;

[0015] Figure 3 It is a schematic cross-sectional structural diagram of the lower cavity and the connecting pipe described in Example 1;

[0016] Figure 4 It is a schematic diagram of the top view of the lower cavity and the connecting pipe in the first embodiment;

[0017] Figure 5 It is a schematic diagram of the front view structure of the upper cavity described in the first embodiment;

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting pipe described in Example 1;

[0019] In the figure: 1. upper cavity; 11. air outlet; 12. snap-on groove; 13. positioning plate; 131. right-angle snap-on; 14. elastic slot; 2. lower cavity; 21. air inlet; 22. snap-on plate; 23. partition; 24. silencer cavity; 241. oil leakage hole; 242. spoiler; 243. positioning step; 25. air supply cavity; 251. air supply channel; 3. connecting pipe; 31. expansion pipe section; 311. third insulation groove; 32. horizontal straight pipe section; 321. second insulation groove; 33. vertical straight pipe section; 331. first insulation groove; 34. right-angle bend pipe section; 35. connecting rib. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] like Figures 1 to 6As shown, a compressor suction muffler includes a cavity and a connecting pipe 3 installed in the cavity of the cavity, the cavity includes an upper cavity 1 and a lower cavity 2 that are snapped together, the top of the upper cavity is provided with an air outlet 11, and the side of the lower cavity is provided with an air inlet 21; the lower edge of the upper cavity 1 is provided with a snap-in groove 12, and the upper edge of the lower cavity 2 is provided with a snap-in plate 22, the snap-in plate 22 is adapted to the snap-in groove 12, the snap-in groove 12 and the snap-in plate 22 can facilitate the connection and fixation between the upper cavity and the lower cavity, and the snap-in plate 22 is inserted into the snap-in groove 12 to form a circuitous sealing surface structure, which can improve the sealing of the connection between the upper cavity 1 and the lower cavity 2; it is convenient for the lower edge of the upper cavity 1 to The connecting pipe 3 is installed along the butt joint with the lower cavity 2, and an elastic groove 14 is provided on the lower edge of the upper cavity 1, and the elastic groove 14 can provide deformation space; the connecting pipe 3 is a right-angle bending structure, including a horizontal straight pipe section 32, a vertical straight pipe section 33 and a right-angle bending pipe section 34, and an expansion pipe section 31 is also provided at the outlet end of the connecting pipe 3; the outlet end of the expansion pipe section 31 is placed below the air outlet, corresponding to the air outlet, and a gap is provided between the outlet end of the expansion pipe section 31 and the upper cavity; the inlet end of the horizontal straight pipe section 32 is placed on the side of the air inlet, corresponding to the air inlet, and a gap is provided between the inlet end of the horizontal straight pipe section 32 and the lower cavity; the pipe wall of the expansion pipe section 31 is provided with a There is an open third insulation groove 311, an open second insulation groove 321 is provided on the tube wall of the horizontal straight tube section 32 along the extension direction, and an open first insulation groove 331 is provided on the vertical straight tube section along the extension direction; wherein, in order to optimize the structure of the muffler and reduce the manufacturing cost, the expansion tube section 31 is a square tube structure, the connecting tube is a round tube structure, a positioning step 243 is provided in the inner cavity of the lower cavity 2, and a positioning plate 13 is provided in the inner cavity of the upper cavity, the positioning plates 13 are evenly distributed around the circumference of the expansion tube section, and a right-angle bayonet 131 is provided on the positioning plate; the expansion tube section is fixed between the right-angle bayonet 131 and the positioning step 243; the connecting tube 3 is a right-angle bending structure , which can maximize the reflection and interference of the noise entering the connecting pipe 3, improve the noise reduction effect, and structurally facilitate the design of the connecting pipe mold; the first insulation groove, the second insulation groove and the third insulation groove can form an insulation cavity on the pipe wall of the connecting pipe 3. When the compressor is working, part of the refrigerant can be retained in the insulation cavity to form an insulation layer to slow down the heat conduction of the refrigerant in the heat connecting pipe in the muffler and avoid the occurrence of overheating of the suction air. The first insulation groove, the second insulation groove and the third insulation groove are all open structures, which can facilitate the noise inside the muffler to enter therein, and reflect and interfere with the noise of different frequency bands, thereby reducing the capacity of the sound wave and achieving the effect of noise reduction.

[0022] Preferably, the third insulation groove 311, the second insulation groove 321, the first insulation groove 331 and the middle thereof are all provided with connecting ribs 35, and the connecting ribs 35 can not only enhance the overall structural strength of the connecting pipe 3, but also divide the insulation groove into a plurality of open unit grooves of different sizes, so as to form reflection and interference phenomena for noises of different frequency bands, thereby reducing the capacity of sound waves and improving the noise reduction effect; further, in order to achieve the best silencing effect, the slot width of the third insulation groove 311, the second insulation groove 321 and the first insulation groove 331 is 0.5-5 mm, the length is 3-60 mm, and the depth is 5-60 times the slot width; the lower cavity 2 A partition 23 is provided in the inner cavity, and the partition divides the inner cavity of the lower cavity into a silencer cavity 24 and an air-making cavity 25; an oil leakage hole 241 is provided at the bottom of the silencer cavity, and an air-making channel 251 is provided in the air-making cavity, and the air-making channel 251 can make the refrigerant in the compressor enter the suction silencer cavity more quickly to improve the refrigeration efficiency of the compressor; the oil leakage hole 241 can facilitate the lubricating oil entering the silencer to be removed in time; a spoiler 242 is provided in the inner cavity of the silencer cavity 24, and the spoiler 242 can reflect the noise entering the silencer cavity, thereby causing the noise to interfere in the silencer cavity to weaken the noise inside the silencer.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A compressor suction muffler, comprising a cavity and a connecting pipe installed in the cavity, wherein the cavity is provided with an air outlet and an air inlet, characterized in that: The outlet end of the connecting pipe is placed at the air outlet, and an open first insulation groove is provided on the pipe wall of the outlet end along the extension direction; the inlet end of the connecting pipe is placed at the air inlet, and an open second insulation groove is provided on the pipe wall of the inlet end of the connecting pipe along the extension direction.

2. The compressor suction muffler according to claim 1, characterized in that: An expansion pipe section is provided at the outlet end of the connecting pipe, and an open third heat-insulating groove is provided on the pipe wall of the expansion pipe section.

3. The compressor suction muffler according to claim 1, characterized in that: The connecting pipe is a right-angle bending structure, comprising a transverse straight pipe section, a vertical straight pipe section and a right-angle bending pipe section.

4. The compressor suction muffler according to claim 1, characterized in that: The first heat-insulating groove and the second heat-insulating groove are both provided with connecting ribs.

5. The compressor suction muffler according to claim 2, characterized in that: The cavity comprises an upper cavity and a lower cavity, a clamping groove is arranged at the lower edge of the upper cavity, and a clamping plate is arranged at the upper edge of the lower cavity, and the clamping plate is matched with the clamping groove.

6. The compressor suction muffler according to claim 5, characterized in that: The expansion tube section is a square tube structure, a positioning step is provided in the inner cavity of the lower cavity, a positioning plate is provided in the inner cavity of the upper cavity, the positioning plates are evenly distributed around the circumference of the expansion tube section, and a right-angle bayonet is provided on the positioning plate; the expansion tube section is fixed between the positioning plate and the positioning step.

7. The compressor suction muffler according to claim 5, characterized in that: An elastic groove is arranged on the lower edge of the upper cavity.

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