Silencer of refrigeration compressor

Abstract

The utility model discloses a refrigeration compressor silencer which comprises a shell and a silencing cover, the silencing cover is fixedly installed on the top of the shell in a clamping mode, an air inlet hole is formed in the side wall of the shell, an air inlet pipe is fixedly connected to the air inlet hole, a first air outlet hole communicated with the interior of the shell is formed in the silencing cover, and a second air outlet hole communicated with the interior of the shell is formed in the silencing cover. A partition plate is installed on the inner wall of the shell, a plurality of first supporting plates are installed at the bottom of the partition plate, trapezoidal clamping grooves are formed in the bottoms of the first supporting plates, first rubber clamping strips are slidably arranged in the trapezoidal clamping grooves, and hollow plates are fixed to the ends, away from the trapezoidal clamping grooves, of the first rubber clamping strips; a second air outlet hole is formed in the end, away from the air inlet hole, of the partition plate, a silencing pipe is connected to the bottom of the first air outlet hole, and the end, away from the first air outlet hole, of the silencing pipe corresponds to the second air outlet hole; the problems that an existing compressor silencer is poor in sound absorption effect, complex in structure and not beneficial to assembly and maintenance are solved.

Description

Technical Field

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

[0002] The compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas and is the heart of the refrigeration system. It sucks low-temperature, low-pressure refrigerant gas from the suction pipe, compresses it through the motor, and discharges high-temperature, high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] The operating noise of the compressor is one of the main noise sources of the compressor. Reducing the operating noise of the compressor can reduce the noise and effectively enhance the comfort of equipment use. Installing a muffler on the compressor pump body can effectively reduce the compressor fluid noise. The muffler has become an indispensable part of the compressor.

[0004] Existing air intake silencers generally have poor sound absorption effect. The sound absorption effect of the silencer decreases with the increase of air flow velocity. This is because when the air flow velocity is high, jet noise will be generated inside or at the outlet of the silencer, making the silencer effect poor and the silencer structure more complicated, making it difficult to process and assemble, and not easy to repair when damaged. A solution is proposed below to the above problems. Utility Model Content

[0005] The utility model aims to provide a refrigeration compressor muffler, which solves the problems of poor sound absorption effect and complex structure of the existing compressor muffler proposed in the above background technology, which is not conducive to assembly and maintenance.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] The vent cover is provided with an air inlet hole, and the vent cover is provided with an air inlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole, and the vent cover is provided with an air outlet hole.

[0008] Preferably, the silencer pipe adopts a serpentine curved structure, a silencer cotton layer is installed on the inner wall of the silencer pipe, and a plurality of raised sound-absorbing cottons are fixed on the inner wall of the silencer pipe, and each of the raised sound-absorbing cottons is arranged in the silencer pipe in a staggered manner.

[0009] Preferably, the connecting member is an annular support plate 2, the annular support plate 2 is fixed on the inner wall of the shell, and the partition plate and the annular support plate 2 are snap-fitted.

[0010] Preferably, a plurality of concave limit plates are symmetrically installed on the inner wall of the shell, and the concave limit plates are located below the annular support plate 2. Rubber clip strips 2 are fixed on both sides of the hollow plate, and the rubber clip strips 2 correspond to the concave limit plates, and the rubber clip strips 2 are clamped inside the concave limit plates.

[0011] Preferably, the exhaust holes on one side are arranged on the lower end side wall of the hollow plate, and the exhaust holes on the other side are arranged on the upper end side wall of the hollow plate.

[0012] Preferably, each of the hollow panels adopts a sound-absorbing panel structure, and a sound-absorbing cotton layer is also installed on the inner wall of the shell.

[0013] Preferably, a sealing ring is fixed to the bottom of the silencer cover, and an annular groove corresponding to the sealing ring is provided on the top of the shell. When the silencer cover is snapped onto the top of the shell, the sealing ring is arranged in the annular groove.

[0014] Preferably, a filter screen is installed on the second air outlet.

[0015] Beneficial effect: By installing a partition plate in the shell, the shell can be divided into a chamber structure for silencing by a hollow plate and a pipe structure for silencing by a silencer pipe. The combination of the chamber and the pipe is used to improve the silencing effect of the silencer. The air entering the shell through the air inlet will first contact the hollow plate. The flow rate of the gas can be slowed down through the hollow plate so that the gas can be better silenced. By installing a support plate 1 at the bottom of the partition plate, the hollow plate is installed in the support plate 1, which facilitates the installation and disassembly of the hollow plate and subsequent maintenance and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment;

[0017] Figure 2 The embodiment is a schematic cross-sectional structure diagram for showing the housing and the muffler cover;

[0018] Figure 3 The embodiment is used to show the cross-sectional structure diagram after the hollow plate, the support plate 1 and the concave limit plate are assembled;

[0019] Figure 4 The embodiment is used to show the assembly schematic diagram of the hollow plate and the rubber clip strip 1 and the rubber clip strip 2;

[0020] Figure 5 The embodiment is a schematic diagram of a cross-sectional structure of a hollow plate;

[0021] Figure 6 The embodiment is a schematic diagram of the cross-sectional structure of the muffler pipe.

[0022] Figure numerals: 1. Shell; 2. Silence cover; 3. Inlet pipe; 4. Outlet pipe; 5. Partition plate; 6. Connector; 7. Support plate 1; 8. Trapezoidal slot; 9. Rubber clip 1; 10. Hollow plate; 11. Exhaust hole; 12. Silence pipe; 13. Silence cotton layer; 14. Raised sound-absorbing cotton; 15. Concave limit plate; 16. Rubber clip 2; 17. Sound-absorbing cotton layer; 18. Filter. DETAILED DESCRIPTION

[0023] See Figures 1 to 6 As shown, a refrigeration compressor muffler comprises a shell 1 and a muffler cover 2, the muffler cover 2 is fixedly mounted on the top of the shell 1 by snap-fitting, a sealing ring is also fixed to the bottom of the muffler cover 2, an annular groove corresponding to the sealing ring is provided on the top of the shell 1, the sealing ring is arranged in the annular groove when the muffler cover 2 is snap-fitted to the top of the shell 1, and a sealing effect can be achieved through the setting of the sealing ring, a partition plate 5 is installed on the inner wall of the shell 1, a plurality of support plates 7 are installed at the bottom of the partition plate 5, a trapezoidal groove 8 is provided at the bottom of the support plate 7, a rubber clip strip 9 is slidably arranged in the trapezoidal groove 8, a hollow plate 10 is fixed to one end of the rubber clip strip 9 away from the trapezoidal groove 8, when the muffler is being installed, each hollow plate 10 can be installed to the bottom of the partition plate 5 first, the hollow plate 10 is fixedly mounted with the support plate 7 by the rubber clip strip 9, and the sealing installation between the hollow plate 10 and the support plate 7 can be achieved through the principle that the rubber clip strip 9 can be deformed.

[0024] A connecting piece 6 is installed between the shell 1 and the partition plate 5. The connecting piece 6 adopts an annular support plate 2, and the annular support plate 2 is fixed on the inner wall of the shell 1. The partition plate 5 and the annular support plate 2 are snap-fitted. After the hollow plate 10 is installed at the bottom of the partition plate 5, the partition plate 5 can be installed in the shell 1. When the partition plate 5 enters the shell 1, it will contact the annular support plate 2 in the shell 1. The annular support plate 2 is a stepped structure so that it can better support the partition plate 5. The partition plate 5 is fixed inside the shell 1 by snap-fitting with the annular support plate 2.

[0025] The inner wall of the shell 1 is also symmetrically installed with multiple concave limit plates 15, which are located below the annular support plate 2. Rubber clip strips 16 are fixed on both sides of the hollow plate 10, which correspond to the concave limit plates 15. The rubber clip strips 16 are clamped inside the concave limit plates 15. During the installation process, the partition plate 5 will drive the bottom hollow plate 10 to be installed inside the shell 1 together, and the rubber clip strips 16 on both sides of the hollow plate 10 will contact the concave limit plates 15. The rubber clip strips 16 will slide into the concave limit plates 15, and the two sides of the hollow plate 10 will be sealed and fixed through the rubber clip strips 16 to prevent gas from flowing through the gaps on both sides during subsequent silencing.

[0026] An air inlet is provided on the side wall of the shell 1, and an air inlet pipe 3 is connected and fixed to the air inlet hole. An air outlet hole 1 communicating with the interior of the shell 1 is provided on the silencer cover 2, and an air outlet pipe 4 is connected and fixed to the air outlet hole 1. The gas to be silenced will enter the shell 1 from the air inlet pipe 3 through the air inlet hole. The gas will first come into contact with the hollow plate 10. The hollow plates 10 all adopt a sound-absorbing plate structure. The gas will hit the hollow plate 10, and the sound-absorbing plate structure of the hollow plate 10 will play a role in sound absorption. The hollow plate 10 can also slow down the flow rate of the gas so that the gas can be better silenced. A sound-absorbing cotton layer 17 is also installed on the inner wall of the shell 1. By installing the sound-absorbing cotton layer 17 inside the shell 1, the sound-absorbing function of the shell 1 can be further improved.

[0027] A plurality of exhaust holes 11 communicating with the interior thereof are provided on both sides of each hollow plate 10. The exhaust holes 11 on one side are provided on the lower end side wall of the hollow plate 10, and the exhaust holes 11 on the other side are provided on the upper end side wall of the hollow plate 10. The gas in contact with the hollow plate 10 will flow through the exhaust holes 11 provided on the hollow plate 10 after being decelerated. The upper and lower settings of the exhaust holes 11 on the hollow plate 10 and the design of multiple hollow plates 10 can extend the circulation time of the gas and thus better perform the silencing treatment.

[0028] An air outlet hole 2 is formed at one end of the partition plate 5 away from the air inlet, and a silencer pipe 12 is connected to the bottom of the air outlet hole 1. The end of the silencer pipe 12 away from the air outlet hole 1 corresponds to the air outlet hole 2. A filter screen 18 is also installed on the air outlet hole 2. The gas after the silencer treatment by the hollow plate 10 will flow upward through the air outlet hole 2 on the partition plate 5, and the gas will enter the filter screen 18, and the impurities in the gas will be filtered through the filter screen 18. After filtration, the gas will enter the silencer pipe 12, and the gas will be further silenced through the silencer pipe 12. By installing the partition plate 5 in the shell 1, the shell 1 can be divided into a chamber structure for silencer by the hollow plate 10 and a pipe structure for silencer by the silencer pipe 12. The combination of the cavity and the pipe is used to improve the silencer effect of the silencer, thereby changing the problem of poor silencer of the traditional silencer.

[0029] The silencer pipe 12 adopts a serpentine curved structure, so that the residence time of the gas in the silencer pipe 12 can be prolonged. The silencer pipe 12 is used to perform the final silencer treatment on the gas, so that the noise of the gas can be reduced to a minimum. A silencer cotton layer 13 is installed on the inner wall of the silencer pipe 12. By installing the silencer cotton layer 13, the gas in the silencer pipe 12 can be better silenced. A plurality of raised sound-absorbing cottons 14 are also fixed on the inner wall of the silencer pipe 12. Each raised sound-absorbing cotton 14 is arranged in the silencer pipe 12 in a staggered manner. By installing the raised sound-absorbing cotton 14 on the inner wall of the silencer pipe 12, the gas will collide with the raised sound-absorbing cotton 14 after entering the silencer pipe 12. During the collision, the gas will generate friction with the raised sound-absorbing cotton 14 and be converted into heat energy, so that the sound waves passing through the silencer pipe 12 can be weakened.

[0030] Working principle: when the compressor gas needs to be silenced, the gas will enter through the intake pipe 3 and the intake hole into the shell 1, the gas will first come into contact with the hollow plate 10, and the gas will be preliminarily treated by the hollow plate 10. The hollow plates 10 all adopt a sound-absorbing plate structure, and the gas will hit the hollow plate 10, and the sound-absorbing plate structure of the hollow plate 10 will play a role in sound absorption. The hollow plate 10 can also slow down the flow rate of the gas so that the gas can be better silenced. A sound-absorbing cotton layer 17 is also installed on the inner wall of the shell 1. By installing the sound-absorbing cotton layer 17 inside the shell 1, the noise emitted by the shell 1 can be reduced as a whole.

[0031] The gas in contact with the hollow plate 10 will flow through the exhaust holes 11 opened on the hollow plate 10 after being decelerated. The upper and lower settings of the exhaust holes 11 on the hollow plate 10 and the design of multiple hollow plates 10 can extend the gas circulation time and thus better perform the silencing treatment.

[0032] The gas after being silenced by the hollow plate 10 will come into contact with the filter 18 through the air outlet 2, and the impurities in the gas will be filtered through the filter 18. The filtered gas will enter the silencer pipe 12, and the gas will be further silenced through the silencer pipe 12. By installing a partition plate 5 in the shell 1, the shell 1 can be divided into a chamber structure silenced by the hollow plate 10 and a pipe structure silenced by the silencer pipe 12. The combination of the cavity and the pipe is used to improve the silencer effect of the silencer, thereby changing the problem of poor silencer of the traditional silencer.

Claims

1. A refrigeration compressor muffler, comprising a housing (1) and a muffler cover (2), characterized in that: The muffler cover (2) is fixedly mounted on the top of the shell (1) by snap-fitting; an air inlet hole is provided on the side wall of the shell (1), and an air inlet pipe (3) is connected and fixed to the air inlet hole; an air outlet hole (1) communicating with the interior of the shell (1) is provided on the muffler cover (2), and an air outlet pipe (4) is connected and fixed to the air outlet hole (1); a partition plate (5) is installed on the inner wall of the shell (1); a connecting piece (6) is installed between the shell (1) and the partition plate (5); a plurality of support plates (7) are installed at the bottom of the partition plate (5); A trapezoidal slot (8) is provided at the bottom of the support plate (7), a rubber clip strip (9) is slidably arranged in the trapezoidal slot (8), a hollow plate (10) is fixed to the end of the rubber clip strip (9) away from the trapezoidal slot (8), a plurality of exhaust holes (11) communicating with the inside of each hollow plate (10) are provided on both sides, an exhaust hole (2) is provided at the end of the partition plate (5) away from the air inlet, a silencer (12) is connected to the bottom of the exhaust hole (1), and an end of the silencer (12) away from the exhaust hole (1) corresponds to the exhaust hole (2).

2. A refrigeration compressor muffler according to claim 1, characterized in that: The silencer pipe (12) adopts a serpentine curved structure, a silencer cotton layer (13) is installed on the inner wall of the silencer pipe (12), and a plurality of raised sound-absorbing cottons (14) are also fixed on the inner wall of the silencer pipe (12), and each of the raised sound-absorbing cottons (14) is arranged in a staggered manner in the silencer pipe (12).

3. A refrigeration compressor muffler according to claim 1, characterized in that: The connecting member (6) is an annular support plate 2, the annular support plate 2 is fixed on the inner wall of the shell (1), and the partition plate (5) is snap-fitted with the annular support plate 2.

4. A refrigeration compressor muffler according to claim 3, characterized in that: The inner wall of the shell (1) is also symmetrically mounted with a plurality of concave limit plates (15), the concave limit plates (15) being located below the second annular support plate, and two rubber clip strips (16) are fixed on both sides of the hollow plate (10), the two rubber clip strips (16) corresponding to the concave limit plates (15), and the two rubber clip strips (16) are clipped inside the concave limit plates (15).

5. A refrigeration compressor muffler according to claim 3, characterized in that: The exhaust hole (11) on one side is arranged on the lower end side wall of the hollow plate (10), and the exhaust hole (11) on the other side is arranged on the upper end side wall of the hollow plate (10).

6. A refrigeration compressor muffler according to claim 5, characterized in that: Each of the hollow panels (10) adopts a sound-absorbing panel structure, and a sound-absorbing cotton layer (17) is also installed on the inner wall of the shell (1).

7. A refrigeration compressor muffler according to claim 6, characterized in that: A sealing ring is also fixed to the bottom of the silencer cover (2), and an annular groove corresponding to the sealing ring is provided on the top of the shell (1); when the silencer cover (2) is snap-fitted to the top of the shell (1), the sealing ring is arranged in the annular groove.

8. A refrigeration compressor muffler according to claim 7, characterized in that: A filter screen (18) is also installed on the second air outlet.

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