A silencer and a compressor

Abstract

The present invention relates to a muffler and a compressor, belonging to the technical field of compressors. The muffler comprises an air collecting groove, the bottom of which is provided with a mounting through hole; it also comprises a drainage channel for guiding the airflow to flow in an oblique downward direction, the drainage channel is connected and arranged at the edge of the groove mouth of the air collecting groove, and an air outlet is arranged at one end of the drainage channel away from the air collecting groove; it also comprises a mounting plate arranged on the outer wall of the drainage channel and provided with screw through holes thereon. The muffler adopting this structure has the advantage of better reducing exhaust noise, and the oil content in the gas discharged therefrom is lower. The muffler adopted by the compressor is the above-mentioned muffler, which has the advantages of lower exhaust noise, higher heat exchange efficiency and energy efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a muffler and a compressor. Background Art

[0002] The existing muffler used on the compressor can reduce the noise generated when the gas in the compressor is discharged through the flange exhaust port. It is installed on the flange and covers the flange exhaust port. The oil-gas mixture discharged upward from the flange exhaust port hits the existing muffler and then is discharged upward through the through hole on the existing muffler, which can reduce the noise. However, it has the following disadvantages:

[0003] 1. The gas discharged from the existing muffler directly impacts the rotor and stator upwards. Since there are no other components to extend the gas's circuitous path to reduce the gas flow rate, the gas will generate a lot of noise after being discharged from the existing muffler;

[0004] 2. The oil-gas mixture directly enters the system upward, which is not conducive to the separation of oil and gas in the oil-gas mixture, resulting in a high oil content entering the system, reducing the system's heat exchange efficiency and energy efficiency. Summary of the invention

[0005] The present invention provides a muffler to solve the technical problem that the gas discharged from the existing muffler has a fast flow rate and is discharged directly upward, directly colliding with the stator and the rotor at high speed to produce a lot of noise. It can also solve the technical problem that the gas discharged from the muffler in the prior art has a high oil content, resulting in low system heat exchange efficiency and energy efficiency.

[0006] The present invention is implemented by the following technical solution: a muffler comprises an air collecting groove, wherein the bottom of the air collecting groove is provided with a mounting through hole;

[0007] It also includes a drainage channel for guiding the airflow to flow in an oblique downward direction, the drainage channel is connected and arranged at the edge of the notch of the gas collecting groove, and an air outlet is arranged at one end of the drainage channel away from the gas collecting groove;

[0008] It also includes a mounting plate, which is arranged on the outer wall of the drainage channel, and is provided with screw through holes for passing fastening screws.

[0009] Furthermore, in order to better realize the present invention, an air inlet is provided at one end of the drainage channel close to the air collecting groove, the bottom wall of the air inlet is flush with the bottom wall of the air outlet, and the distance between the top wall of the air inlet and the bottom wall of the air inlet is greater than the distance between the top wall of the air outlet and the bottom wall of the air outlet.

[0010] Furthermore, in order to better implement the present invention, the width of the air outlet is smaller than the width of the air inlet.

[0011] Furthermore, in order to better implement the present invention, the inner wall of the drainage channel is a gradual and smooth surface.

[0012] Furthermore, in order to better implement the present invention, the drainage channel is a straight flow channel.

[0013] Furthermore, in order to better realize the present invention, the number of the drainage channels is multiple, and the multiple drainage channels are distributed in a divergent manner at the edge of the gas collecting groove, and every two adjacent drainage channels form a channel group. The number of channel groups is also multiple, and the mounting through hole is a circular hole. The multiple channel groups are distributed in a circular array with the axial line of the mounting through hole as the center, and a connecting plate A is arranged between the relative outer walls of the two drainage channels in each channel group, and the mounting plate is arranged between two adjacent channel groups.

[0014] Furthermore, in order to better implement the present invention, the mounting plate is flush with the A connecting plate, and the upper surface of the mounting plate and the upper surface of the A connecting plate are both flush with the bottom wall of the air outlet.

[0015] Furthermore, in order to better implement the present invention, the number of the drainage channels is eight.

[0016] Furthermore, in order to better implement the present invention, the drainage channel is a curved flow channel.

[0017] Furthermore, in order to better implement the present invention, the number of the drainage channels is multiple, the mounting through hole is a circular hole, and the multiple drainage channels are evenly distributed in a first fan surface with the center of the mounting through hole as the center of the circle and a central angle of 270°. The mounting plate is provided between two adjacent drainage channels in the first fan surface, and a B connecting plate is provided in the area complementary to the first fan surface.

[0018] Furthermore, in order to better implement the present invention, the B connecting plate is flush with the mounting plate and the upper surface of the B connecting plate and the upper surface of the mounting plate are both flush with the bottom wall of the air outlet.

[0019] Furthermore, in order to better implement the present invention, the middle position of the B connecting plate protrudes outward toward the top wall of the air inlet to form a balancing air groove, and the balancing air groove is connected to the air collecting groove. The screw through hole is also provided on the B connecting plate in the area where the balancing air groove connects with the drainage channel.

[0020] Furthermore, in order to better implement the present invention, the number of the drainage channels is three.

[0021] The present invention also provides a compressor, which solves the technical problem of low system heat exchange efficiency and energy efficiency caused by high oil content entering the system through the muffler in the compressor in the prior art, and can also solve the technical problem of high exhaust noise of the compressor in the prior art.

[0022] The present invention is implemented through the following technical scheme: it includes a rotor, a stator, a shell and an integrated exhaust flange and a flange sleeve, and also includes the above-mentioned muffler, the rotor, the stator, the exhaust flange, the flange sleeve and the muffler are all installed in the shell, and also includes a fastening screw, the fastening screw passes through the screw through hole and is screwed on the exhaust flange, the mounting through hole is adapted to the flange sleeve, and the flange sleeve is passed through the mounting through hole.

[0023] Furthermore, in order to better implement the present invention, an inclined surface parallel to the flow direction of the fluid in the drainage channel is provided at the edge of the exhaust flange.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The silencer provided by the present invention comprises an air collecting groove, a drainage channel and a mounting plate. The drainage channel is connected and arranged at the groove mouth of the air collecting groove and an exhaust port is also arranged at one end thereof away from the air collecting groove. A mounting through hole is arranged at the groove bottom of the air collecting groove. The mounting through hole cooperates with the mounting plate to install the silencer in the compressor. The gas discharged from the exhaust flange of the compressor will impact on the groove wall of the air collecting groove to achieve a silencing effect, and then flow in an oblique downward direction through the drainage channel and discharge from the silencer from the exhaust port. In this way, the gas discharged from the silencer is not discharged directly upward, but is discharged in an oblique downward direction after making a detour. The discharged gas It will not directly hit the rotor and stator at high speed but hit the compressor housing, eliminating the noise generated by the gas hitting the rotor and stator. Moreover, since the gas travel path is extended, the flow rate of the gas discharged from the silencer is lower, and the noise generated by the gas hitting the compressor housing is lower than the noise of the gas discharged from the existing silencer hitting the rotor and stator, thereby reducing the noise generated after the gas is discharged from the silencer. Moreover, since the gas flows in an oblique downward direction, the oil will be more easily separated from the gas under the action of gravity, reducing the oil content in the gas entering the system, thereby improving the heat exchange efficiency and energy efficiency of the system.

[0026] (2) The compressor provided by the present invention has the advantages of lower noise and higher heat exchange efficiency and energy efficiency due to the use of the above-mentioned muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of an existing muffler installed in a compressor;

[0029] Figure 2 It is a schematic diagram of the structure in which the muffler of the present invention is installed in the compressor;

[0030] Figure 3 It is a schematic diagram of the structure in which the muffler of the present invention is installed in a compressor with an inclined surface on the edge of the exhaust flange;

[0031] Figure 4 is a schematic structural diagram of a muffler when the drainage channel in the present invention is a straight flow channel;

[0032] Figure 5 yes Figure 4 AA section view in;

[0033] Figure 6 is a schematic structural diagram of a muffler when the drainage channel in the present invention is a curved flow channel;

[0034] Figure 7 yes Figure 6 Side view of the muffler shown.

[0035] In the figure:

[0036] 1-muffler; 11-air collecting groove; 12-drainage channel; 13-mounting plate; 14-A connecting plate; 15-B connecting plate; 16-balance air groove; 17-screw through hole; 18-mounting through hole;

[0037] 2- rotor;

[0038] 3- stator;

[0039] 4- housing;

[0040] 5-exhaust flange; 51-bevel;

[0041] 6-flange sleeve;

[0042] 7- Existing silencer. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0044] Embodiment 1:

[0045] In this embodiment, Figures 4 to 7 As shown, a silencer 1 includes an air collecting groove 11, a drainage channel 12 and a mounting plate 13. The bottom of the air collecting groove 11 is provided with a mounting through hole 18. The mounting plate 13 is installed on the outer wall of the drainage channel 12 and is provided with a screw through hole 17 for passing a fastening screw. The mounting plate 13 cooperates with the above-mentioned mounting through hole 18 to install the silencer 1 in the compressor. The gas discharged from the exhaust flange 5 of the compressor directly hits the groove wall of the above-mentioned air collecting groove 11 upward and is collected, thereby achieving a silencing effect.

[0046] The above-mentioned drainage channel 12 is connected and arranged at the edge of the groove mouth of the above-mentioned gas collecting groove 11, so that the gas in the above-mentioned gas collecting groove 11 will flow out of the muffler 1 under the drainage action of the drainage channel 12, and it is limited that the drainage channel 12 can guide the gas flowing therein in an oblique downward direction, and an air outlet is arranged at one end of the drainage channel 12 away from the gas collecting groove 11, so that the gas passing through the drainage channel 12 will be discharged from the exhaust port in an oblique downward direction.

[0047] The silencer 1 with this structure can reduce the noise generated by the gas discharged from the exhaust flange 5 of the compressor, and because the silencer 1 guides the gas to be discharged in an oblique downward direction instead of directly discharging the silencer 1 upward, the noise generated by the gas directly hitting the rotor 2 and the stator 3 at high speed can be eliminated, and the circuitous path of the gas flow can be extended to reduce the flow rate. Even if the noise generated by the gas discharged from the silencer 1 provided by the present invention hitting the housing 4 of the compressor will be less than the noise generated by the existing silencer 7 directly discharging the gas upward and hitting the rotor 2 and the stator 3, the silencer 1 provided by the present invention can reduce the noise generated by the gas after being discharged from the silencer 1, and the silencer effect is better. In addition, the gas guided by the drainage channel 12 flows in an oblique downward direction to be discharged from the silencer 1. Under the action of the oil's own gravity, the oil in the gas will be more easily separated, thereby reducing the oil content in the gas discharged from the silencer 1, thereby improving the heat exchange efficiency and energy efficiency of the compressor.

[0048] As a specific implementation of this embodiment, the mounting plate 13 in this embodiment is installed on the exhaust flange 5 (upper flange) in the compressor, and the above-mentioned gas collecting groove 11 is covered outside the exhaust flange 5. The gas discharged from the exhaust flange 5 will collide with and be collected in the gas collecting groove 11, and will not pass through the bottom of the gas collecting groove 11.

[0049] Embodiment 2:

[0050] As the best implementation mode of this embodiment, the above-mentioned drainage channel 12 is defined as being provided with an air inlet at one end close to the air collecting groove 11, and the air inlet is connected to the interior of the above-mentioned air collecting groove 11, and the bottom wall of the air inlet is defined as being flush with the bottom wall of the above-mentioned air outlet, and the distance between the top wall of the above-mentioned air inlet and the bottom wall of the above-mentioned air inlet is greater than the distance between the top wall of the air outlet and the air outlet, so that the drainage channel 12 can achieve the function of diagonally diverting the gas downward.

[0051] As another implementation of this embodiment, the top wall of the air outlet can be set below the bottom wall of the air inlet, or the top wall of the air outlet can be set between the bottom wall and the top wall of the air outlet, as long as the height of the air outlet is lower than the height of the air inlet.

[0052] Embodiment 3:

[0053] This embodiment is the optimal implementation of Embodiment 2. In this embodiment, the width of the above-mentioned air outlet is limited to be smaller than the width of the air inlet. In this way, the distance between the top wall of the above-mentioned air inlet and the bottom wall of the above-mentioned air inlet is greater than the distance between the top wall of the air outlet and the air outlet, so that the air outlet size of the drainage channel 12 is smaller than the air inlet size, and the entire drainage channel 12 is a contraction structure with a smaller air outlet and a larger air inlet, which guides the gas to be discharged in an orderly manner, reduces the resistance caused by turbulence during the gas flow, reduces power consumption and reduces the noise generated by the gas flowing in the drainage channel 12.

[0054] As a better implementation mode of this embodiment, the inner wall of the drainage channel 12 in this embodiment is a gradual and smooth surface, which can make the gas flow more smoothly in the drainage channel 12, further reduce the resistance caused by turbulence during the flow of gas, reduce power consumption and reduce the noise generated by the gas flowing in the drainage channel 12.

[0055] Embodiment 4:

[0056] This embodiment is a specific implementation of the above embodiment. Figure 4 and Figure 5As shown, the drainage channel 12 in this embodiment is a straight channel, which is easy to manufacture, and there are multiple drainage channels 12, and the multiple drainage channels 12 are defined in a divergent shape at the edge of the slot of the air collecting groove 11. In this way, the force at each position of the entire muffler 1 is roughly the same when in use, thereby enhancing its stability in use and making it more beautiful.

[0057] It is defined that every two adjacent drainage channels 12 form a channel group, and the number of the channel groups is also multiple, and the above-mentioned installation through hole 18 is defined as a circular hole, and the multiple channel groups are arranged in a circular array with the center line of the installation through hole 18 as the center. A connecting plate 14 is provided between the opposite outer walls of the two drainage channels 12 in each channel group to enhance the overall structural strength and prevent the gas from passing through the gap between the two drainage channels 12 in the channel group, and the above-mentioned installation plate 13 is provided between two adjacent channel groups.

[0058] The silencer 1 of this structure can guide the gas to flow more smoothly in the drainage channel 12, reduce the gas flow resistance, and smoothly flow out from the exhaust port of the drainage channel 12. Specifically, the number of the drainage channels 12 in the straight channel shape is eight.

[0059] In order to make the structure of the silencer 1 in this embodiment more beautiful and more convenient to use, as a preferred solution of this embodiment, the mounting plate 13 in this embodiment is flush with the above-mentioned A connecting plate 14 and the upper surface of the mounting plate 13 and the upper surface of the A connecting plate 14 are both flush with the bottom wall of the above-mentioned air outlet.

[0060] Embodiment 5:

[0061] This embodiment is another implementation of embodiment 4. In this embodiment, Figure 6 and Figure 7 As shown, the above-mentioned drainage channel 12 is limited to a curved channel, so that the path length of the gas flowing therein can be further extended, the flow rate of the gas discharged from the outlet can be further reduced, and the noise generated by the gas after being discharged from the silencer 1 can be further reduced.

[0062] Preferably, the number of the drainage channels 12 in this embodiment is also multiple, and the above-mentioned installation through hole 18 is also a circular hole, and the multiple drainage channels 12 are evenly distributed in the first sector with the center of the installation through hole 18 as the center and the central angle of 270°, as shown in the following example. Figure 6 As shown, the above-mentioned mounting plate 13 is provided between two adjacent drainage channels 12, and a B connecting plate 15 is provided in the area complementary to the above-mentioned first fan surface. The B connecting plate 15, the mounting plate 13 and the multiple drainage channels 12 form a complete circular surface, thereby preventing the gas from passing through it and being discharged directly upward.

[0063] The curved drainage channel 12 allows the gas therein to be discharged in a rotating manner, which is more in line with the characteristics of gas flow, reduces the resistance to gas flow and discharge to a greater extent, reduces exhaust power consumption, and improves COP.

[0064] In order to make the silencer 1 provided in this embodiment more beautiful in appearance and easier to use, the B connecting plate 15 in this embodiment is flush with the mounting plate 13, and the upper surface of the B connecting plate 15 and the upper surface of the mounting plate 13 are both flush with the bottom wall of the air outlet.

[0065] Preferably, the number of drainage channels 12 in this embodiment is three.

[0066] Embodiment 6:

[0067] This embodiment is a further improved implementation of Embodiment 5. In this embodiment, Figure 6 As shown, a balancing gas groove 16 is formed by bending and protruding at the middle position of the above-mentioned B connecting plate 15 toward the top wall of the air inlet of the drainage channel 12. The balancing gas groove 16 is connected with the above-mentioned gas collecting groove 11. In this way, the gas pressure of the muffler 1 is balanced around the gas collecting groove 11, which enhances the stability of the muffler 1 and allows it to be installed and used more stably.

[0068] In this case, the above-mentioned screw through holes 17 for passing screws are also provided on the B connecting plate 15 connecting the above-mentioned balancing gas groove 16 and the drainage channels 12 on both sides, so as to facilitate installation and fastening.

[0069] Embodiment 7:

[0070] This embodiment is a better implementation of embodiment 5. In this embodiment, Figure 6 As shown, the outer contour of the entire drainage channel 12 is a curved shape, and the air inlet of the drainage channel 12 is larger than its air outlet, but the interior of the entire channel presents a structure that first gradually increases and then gradually decreases. When the gas flows through the drainage channel 12 with this structure, it will pass through the channel with a variable cross-section, and the acoustic impedance will change, and the wavelength of the corresponding sound wave will also change, causing a part of the sound wave to be reflected back along the direction of the source, and the sound silencing effect is better.

[0071] Embodiment 8:

[0072] This embodiment provides a compressor, such as Figure 2 and Figure 3As shown, the embodiment includes a rotor 2, a stator 3, a housing 4, an integrated exhaust flange 5 and a flange sleeve 6, and also includes the muffler 1 described in the above embodiment. The exhaust flange 5 and the flange sleeve 6 are actually upper flanges. The rotor 2, the stator 3, the exhaust flange 5 and the flange sleeve 6, and the muffler 1 are all installed in the housing 4, and also include fastening screws, which pass through the screw through holes 17 and are screwed on the exhaust flange 5. The mounting through holes 18 are adapted to the flange sleeve 6, and the flange sleeve 6 is connected to the mounting through holes 18. In this way, the muffler 1 is installed above the exhaust flange 5. Since the rotor 2, the stator 3, the exhaust flange 5 and the flange sleeve 6, and the housing 4 are all prior art, they will not be described in detail here.

[0073] Due to the use of the muffler 1 provided in the above embodiment, the compressor provided by the present invention has the advantages of lower exhaust noise, higher heat exchange efficiency and energy efficiency.

[0074] Embodiment 9:

[0075] This embodiment is an improved implementation of embodiment 8. In this embodiment, Figure 3 As shown, a slope 51 parallel to the flow direction of the fluid (gas) in the guide channel 12 is provided at the edge of the exhaust flange 5, which helps to increase the slope of the muffler 1, facilitates gas flow and reduces noise.

[0076] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A muffler, characterized in that: It comprises a gas collecting tank, wherein the bottom of the gas collecting tank is provided with a mounting through hole; It also includes a drainage channel for guiding the airflow to flow in an oblique downward direction, the drainage channel is connected and arranged at the edge of the notch of the gas collecting groove, and an air outlet is arranged at one end of the drainage channel away from the gas collecting groove; It also includes a mounting plate, which is arranged on the outer wall of the drainage channel, and is provided with a screw through hole for passing a fastening screw; An air inlet is provided at one end of the drainage channel close to the air collecting groove, the bottom wall of the air inlet is flush with the bottom wall of the air outlet, and the distance between the top wall of the air inlet and the bottom wall of the air inlet is greater than the distance between the top wall of the air outlet and the bottom wall of the air outlet; The width of the air outlet is smaller than the width of the air inlet, and the inner wall of the drainage channel is a gradient surface, so that the entire drainage channel is a shrinkage structure with a smaller air outlet and a larger air inlet.

2. A muffler according to claim 1, characterized in that: The inner wall of the drainage channel is a smooth surface.

3. A muffler according to any one of claims 1-2, characterized in that: The drainage channel is a straight flow channel.

4. A muffler according to claim 3, characterized in that: The number of the drainage channels is multiple, and the multiple drainage channels are distributed in a divergent manner at the edge of the gas collecting groove. Every two adjacent drainage channels form a channel group, and the number of channel groups is also multiple. The mounting through hole is a circular hole, and the multiple channel groups are distributed in a circular array with the axial line of the mounting through hole as the center. A connecting plate A is arranged between the relative outer walls of the two drainage channels in each channel group, and the mounting plate is arranged between two adjacent channel groups.

5. A muffler according to claim 4, characterized in that: The mounting plate is flush with the A connecting plate, and the upper surface of the mounting plate and the upper surface of the A connecting plate are both flush with the bottom wall of the air outlet.

6. A muffler according to claim 5, characterized in that: The number of the drainage channels is eight.

7. A muffler according to any one of claims 1-2, characterized in that: The drainage channel is a curved flow channel.

8. A muffler according to claim 7, characterized in that: There are multiple drainage channels, and the mounting through hole is a circular hole. The multiple drainage channels are evenly distributed in a first fan surface with the center of the mounting through hole as the center of the circle and a central angle of 270°. The mounting plate is provided between two adjacent drainage channels in the first fan surface, and a B connecting plate is provided in the area complementary to the first fan surface.

9. A muffler according to claim 8, characterized in that: The B connecting plate is flush with the mounting plate, and the upper surface of the B connecting plate and the upper surface of the mounting plate are both flush with the bottom wall of the air outlet.

10. A muffler according to claim 9, characterized in that: The middle part of the B connecting plate bulges outward toward one side of the top wall of the air inlet to form a balancing gas groove, and the balancing gas groove is connected to the gas collecting groove. The screw through hole is also provided on the B connecting plate in the area where the balancing gas groove and the drainage channel are connected.

11. A muffler according to claim 10, characterized in that: The number of the drainage channels is three.

12. A compressor, characterized in that: It includes a rotor, a stator, a shell and an integrated exhaust flange and a flange sleeve, and also includes the silencer described in any one of claims 1-11, the rotor, the stator, the exhaust flange, the flange sleeve and the silencer are all installed in the shell, and also includes a fastening screw, the fastening screw passes through the screw through hole and is screwed on the exhaust flange, the mounting through hole is adapted to the flange sleeve, and the flange sleeve is passed through the mounting through hole.

13. A compressor according to claim 12, characterized in that: An inclined surface parallel to the flow direction of the fluid in the drainage channel is provided at the edge of the exhaust flange.

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