CN113638865A - S-shaped communicating pipe silencer for refrigerator compressor - Google Patents
S-shaped communicating pipe silencer for refrigerator compressor Download PDFInfo
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- CN113638865A CN113638865A CN202110983460.0A CN202110983460A CN113638865A CN 113638865 A CN113638865 A CN 113638865A CN 202110983460 A CN202110983460 A CN 202110983460A CN 113638865 A CN113638865 A CN 113638865A
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- pipe
- silencing
- partition plate
- shaped
- snake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
Abstract
The invention discloses a snake-shaped communicating pipe silencer for a refrigerator compressor, which comprises an upper silencing chamber and a lower silencing chamber, wherein the lower silencing chamber comprises a communicating pipe component, a left silencing expansion cavity and a right silencing expansion cavity; the communicating device component comprises a snake-shaped communicating pipe and a partition plate fixedly connected with the snake-shaped communicating pipe; the snake-shaped communicating pipe comprises a U-shaped bent pipe part, a neck pipe part and a tail pipe part, wherein the U-shaped bent pipe part is provided with a pair of opening slits which are symmetrically arranged; according to the invention, through the matching of the snake-shaped communicating pipe and the opening slit, the noise elimination frequency range can be effectively adjusted by utilizing the Helmholtz resonance noise elimination principle, and the noise elimination volume of the target frequency band is increased.
Description
Technical Field
The invention relates to the field of refrigeration compressor equipment, in particular to a snake-shaped communicating pipe silencer for a refrigerator compressor.
Background
With the increasing living standard of people, refrigerators become common household appliances in households. However, due to the trend of miniaturization of housing area caused by high housing price, the noise quality of the refrigerator is becoming a major concern for people to purchase. The compressor, as the "heart" in the refrigerator system, is the main source of noise generation for the refrigerator noise. The cause of the compressor noise generation is complicated: including mechanical kinematic pair friction, opening and closing of suction and exhaust valves, suction and exhaust pulsation, electromagnetic excitation and other vibrations during the operation of the compressor. Among the numerous noise sources of the compressor, the suction muffler disposed between the suction pipe and the suction valve plate of the compressor is one of the important components capable of effectively reducing the noise of the compressor, and has been the key point of the noise reduction design of the refrigerator. The silencer commonly used at present is generally designed into a silencing structure with two expansion cavities of an upper cavity and a lower cavity.
The prior chinese invention patent with application number CN201611047773.0 discloses an air suction silencer for a compressor in 2018, 05 and 29, wherein a partition plate is arranged between an upper shell and a lower shell, a coiled pipe assembly is arranged between the partition plate and the lower shell, an air suction pipe is connected with the coiled pipe assembly, the air suction pipe is positioned outside the lower shell, and the partition plate comprises an air pipe, a support plate and a fixing plate; the support plate is positioned on the lower shell, the fixing plate and the air pipe are positioned in the shell of the upper shell, the air pipe is fixed on the support plate, the air outlet of the air pipe is connected with the air outlet pipe of the upper shell, the air inlet is connected with the outlet of the coiled pipe assembly, the fixing plate is vertically arranged on the support plate along the axis direction of the silencer and is connected with the pipe body of the air pipe, the space formed by the partition plate and the shell of the upper shell is divided into a first silencing cavity and a second silencing cavity by the fixing plate, a first expanding hole is formed in the part of the air pipe positioned in the first silencing cavity, and a second expanding hole is formed in the part of the air pipe positioned in the second silencing cavity; however, the proposal has the defects that because the tail end of the serpentine tube assembly is arranged in a suspension way, the serpentine tube assembly is easy to vibrate during air suction and becomes a noise source,
disclosure of Invention
The invention aims to solve the problems in the prior art and provides a snake-shaped communicating pipe silencer for a refrigerator compressor.
In order to achieve the purpose, the invention adopts the technical scheme that:
a snake-shaped communicating pipe silencer for a refrigerator compressor comprises an upper silencing chamber and a lower silencing chamber, wherein a horizontal partition plate is arranged between the upper silencing chamber and the lower silencing chamber, the upper side of the upper silencing chamber is connected with an air outlet pipeline, the outer side of the lower silencing chamber is connected with an air suction pipeline, the lower silencing chamber comprises a communicating device assembly, the communicating device assembly comprises a snake-shaped communicating pipe and a partition plate fixedly connected with the snake-shaped communicating pipe, and the partition plate divides the lower silencing chamber into a left silencing expansion cavity and a right silencing expansion cavity; the snake-shaped communicating pipe comprises a first half pipe and a second half pipe which are split into two halves, the partition plate comprises a first half partition plate and a second half partition plate which are symmetrically split, the first half pipe is fixedly connected with the first half partition plate, and the second half pipe is fixedly connected with the second half partition plate; strip-shaped mounting grooves are symmetrically formed in two side walls of the lower silencing chamber, and edges of two sides of the partition plate are clamped in the strip-shaped mounting grooves; the snakelike communicating pipe comprises a U-shaped bent pipe part, a neck pipe part and a tail pipe part, wherein the neck pipe part and the tail pipe part are respectively connected with two ends of the U-shaped bent pipe part; an air inlet communicated with the air suction pipeline is arranged below one side of the right silencing expansion cavity, a spoiler is arranged on the side edge of the air inlet of the right silencing expansion cavity, and the spoiler is abutted to one side of the end part of the tail pipe part.
The silencer is an internal component of the refrigerator compressor, is specifically arranged between the air suction pipe and the air suction valve plate of the compressor cylinder and is used for reducing noise when low-temperature and low-pressure gas sucked by the cylinder, and therefore the noise reduction capability is the most critical index for judging the quality of the silencer.
Compared with the existing product improvement, the improvement method has the key points that firstly, the flow direction of the airflow is changed for many times by arranging the snake-shaped communicating pipe, so that the flow resistance of the gas is increased, the energy attenuation of sound waves generated by reflection in the pipeline is increased, and the effect of enhancing noise elimination is achieved;
secondly, the U-shaped bent pipe part is arranged in the left silencing expansion cavity and matched with the opening slit, the position of the opening slit is adjusted, the silencing frequency range can be effectively adjusted by utilizing the Helmholtz resonance silencing principle, and the silencing volume of the target frequency band is increased;
thirdly, the snake-shaped communicating pipe and the partition plate are designed in a split mode, the structure is simple, the structural strength is high, the processing and the assembly are convenient, and the adjustment and the design of the position, the number and the size of the slit of the opening are facilitated;
strip-shaped mounting grooves are symmetrically formed in two side walls of the lower sound-deadening chamber, edges of two sides of the partition plate are clamped in the strip-shaped mounting grooves, and the partition plate is located at different positions of the snake-shaped communicating pipe by quickly replacing different communicating device assemblies, so that the proportion of the snake-shaped communicating pipe, which is located in the left sound-deadening expansion cavity and the right sound-deadening expansion cavity, is adjusted, and the requirements of different target frequency bands on sound-deadening volumes are met;
fifthly, the spoiler supports the lower end port of the snake-shaped communicating pipe, so that self vibration noise of the snake-shaped communicating pipe is reduced, the direction of air flow when entering is adjusted, turbulence is reduced, the sound wave propagation direction is reflected, a certain sound wave mutual offset effect is formed, and a structural noise reduction effect is achieved;
sixthly, the two opening slits are symmetrical to each other and are respectively arranged on the first half pipe and the second half pipe, so that the forces borne by the flowing-out airflow and the flowing-in airflow on the two sides of the snake-shaped communicating pipe are mutually counteracted, and the vibration noise of the snake-shaped communicating pipe is reduced.
Further, the horizontal partition plate is provided with an upper cavity through pipe and a lower cavity through pipe which vertically penetrate through, the neck pipe part is connected with the upper cavity through pipe and the lower cavity through pipe, and the bending direction of the neck pipe part is opposite to that of the U-shaped bent pipe part. Through setting up the neck pipe portion, make the air current carry out the switching-over many times in snakelike UNICOM's pipe to enter into the upper muffler room diffusion through last lower chamber siphunculus, further promote the noise cancelling effect.
Furthermore, the neck pipe part is positioned between the left silencing expansion cavity and the right silencing expansion cavity, and the neck pipe part is fixedly connected with the partition plate. The neck pipe part is fixedly connected with the partition plate, so that the partition plate supports the neck pipe part, and the vibration noise of the snake-shaped communicating pipe is reduced.
Further, the port of the tailpipe portion is disposed opposite to the intake port with a space therebetween. The interval that gas passes through between tailpipe portion and the air inlet enters into has the amortization expansion chamber to expand fast, slows down the velocity of flow of air current, reduces the pressure of air current to reduce the noise of breathing in.
Further, the port of the tailpipe portion has an inclined angle with respect to the air inlet. Through making for having the slope contained angle between tailpipe portion and the air inlet, make the air current that flows from the air inlet form the contained angle when entering into tailpipe portion, the air current is hindered slowly by the inside wall of the slope of tailpipe portion, reduces the velocity of flow to further less noise.
Furthermore, the lower side end part of the first half pipe and the second half pipe is provided with a connecting lug, the connecting lug of the first half pipe is provided with a blind hole, and the connecting lug of the second half pipe is provided with a bolt inserted into the blind hole. The lower side end part of the first half pipe and the lower side end part of the second half pipe are in interference fit with each other through the connecting lugs, so that the first half pipe and the second half pipe are connected more stably, and vibration is reduced.
Furthermore, the bending angle of the U-shaped bent pipe part is 60-150 degrees, wherein the pair of opening slits are arranged in the middle of the U-shaped bent pipe part. The opening slit is arranged at the middle position of the U-shaped bent pipe part, so that airflow can more easily escape from the snake-shaped communicating pipe to enter the left silencing expansion cavity when passing through the opening slit; through reducing the bend angle of U type bent pipe portion, can reduce the effect of hindering slowly of U type bent pipe portion to the air current, improve compressor suction efficiency, through the bend angle of increase U type bent pipe portion, can increase the effect of hindering slowly of U type bent pipe portion to the air current, improve the noise cancelling effect of silencer, be 60 ~ 150 intervals through the bend angle with U type bent pipe portion to obtain the balance of suction efficiency and noise cancelling effect.
The ratio of the sum of the neck pipe part and the tail pipe part to the U-shaped bent pipe part is less than 0.5. Through improving the proportion that U type bent pipe portion accounts for whole snakelike closed tube, further improve noise cancelling effect.
Further, the up end of horizontal separator sets up the round boss perpendicularly, the boss encloses to be located around the last port of snakelike closed tube, the upside of boss is equipped with the micropore spacer (not shown in the figure), the peripheral edge of micropore spacer with the boss passes through pin fixed connection. The air current that flows from snakelike closed tube, the speed and the pressure of air current are further reduced through hindering of micropore spacer, later enter into the pipeline of giving vent to anger.
Furthermore, a circle of connecting inserting plate is arranged on the peripheral side wall of the upper end of the lower silencing chamber, connecting inserting slots in interference fit with the connecting inserting plates are arranged on the peripheral side wall of the upper silencing chamber, and the lower silencing chamber and the upper silencing chamber are detachably mounted; the inner wall of the upper silencing chamber and the inner wall of the lower silencing chamber are connected through a connecting portion to form an annular mounting groove, and the edges of the peripheral sides of the horizontal partition plates are clamped in the annular mounting groove.
Furthermore, a silencing bulge is arranged on the outer side of the end part of the tail pipe part, an inner cavity channel of a conical structure is arranged inside the silencing bulge, and the silencing bulge is located on one side far away from the spoiler. The silencing bulge and the spoiler are oppositely arranged and matched with each other, so that when the airflow of the tail pipe part flows out of the silencing bulge, the end part of the tail pipe part is not stressed to vibrate; through the inner cavity channel with the conical structure, airflow in the tail pipe part is easier to discharge, microcirculation is formed with the end part sucked airflow, and airflow vibration noise caused by overlarge vacuumizing force during air suction is reduced.
Furthermore, the first half pipe is provided with a first step structure along the end face of the pipe wall, the second half pipe is provided with a second step structure along the end face of the pipe wall, and the first step structure is matched with the second step structure in an inserting mode to enable the first half pipe and the second half pipe to be clamped.
The upper end face of the snake-shaped communicating pipe is provided with a step structure III matched with the upper cavity communicating pipe and the lower cavity communicating pipe, and the step structure III realizes the stable installation of the snake-shaped communicating pipe and the upper cavity communicating pipe and the lower cavity communicating pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the snake-shaped communicating pipe is arranged, so that the flow direction of the air flow is changed for many times, the flow resistance of the air is increased, the energy attenuation of sound waves generated by reflection in the pipeline is increased, and the effect of enhancing noise elimination is achieved;
2. the U-shaped bent pipe part is arranged in the left silencing expansion cavity and is matched with the opening slit, the position of the opening slit is adjusted, the silencing frequency range can be effectively adjusted by utilizing the Helmholtz resonance silencing principle, and the silencing volume of a target frequency band is increased;
3. the snake-shaped communicating pipe and the partition plate are designed in a split mode, so that the structure is simple, the structural strength is higher, the processing and the assembly are convenient, and the adjustment and the design of the position, the number and the size of the slit of the opening are facilitated;
4. the edges of two sides of the partition plate are clamped in the strip-shaped mounting groove, and the partition plate is positioned at different positions of the snake-shaped communicating pipe by quickly replacing different communicating device assemblies, so that the sizes of the left silencing expansion cavity and the right silencing expansion cavity are adjusted, and the requirements of different silencing volumes of target frequency bands are met;
5. the spoiler supports the lower end port of the snake-shaped communicating pipe, so that the self vibration noise of the snake-shaped communicating pipe is reduced, the direction of air flow during entering is adjusted, the turbulence phenomenon is reduced, the sound wave propagation direction is reflected, a certain sound wave mutual offset effect is formed, and the structural noise reduction effect is achieved;
6. through making two the opening slit symmetry each other just locates first half pipe with the second half pipe makes from snakelike closed tube both sides by the mutual counterbalance of the air current power that flows out and flow in, reduces the vibration noise of snakelike closed tube.
Drawings
FIG. 1 is a perspective view of a serpentine shaped communication tube muffler for a refrigerator compressor in accordance with the present invention;
FIG. 2 is a cross-sectional view of a serpentine shaped communication tube muffler for a refrigerator compressor in accordance with the present invention;
fig. 3 is a perspective view of a communicator assembly of the present invention;
fig. 4 is a schematic diagram of a disassembled linker assembly of the present invention;
FIG. 5 is a schematic view of a first half-pipe of the present invention;
FIG. 6 is a schematic view of a second tube half of the present invention;
in the figure: 1. an upper silencing chamber; 2. a lower anechoic chamber; 3. a horizontal partition plate; 4. an air outlet pipe; 5. an air intake duct; 6. a snake-shaped communicating pipe; 601. a neck portion; 602. a U-shaped bent pipe portion; 603. a tailpipe section; 7. a partition plate; 8. a first half pipe; 9. a second half pipe; 10. a strip-shaped mounting groove; 11. an open slit; 12. a spoiler; 13. connecting lugs; 14. a boss; 15. a sound deadening bulge; 16. the upper and lower cavities are communicated with each other.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "horizontal", "vertical", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 6, a snake-shaped communicating pipe silencer for a refrigerator compressor comprises an upper silencing chamber 1 and a lower silencing chamber 2, wherein a horizontal partition plate 3 is arranged between the upper silencing chamber 1 and the lower silencing chamber 2, an air outlet pipeline 4 is connected to the upper side of the upper silencing chamber 1, an air suction pipeline 5 is connected to the outer side of the lower silencing chamber 2, the lower silencing chamber 2 comprises a communicating device assembly, the communicating device assembly comprises a snake-shaped communicating pipe 6 and a partition plate 7 fixedly connected with the snake-shaped communicating pipe 6, and the partition plate 7 divides the lower silencing chamber 2 into a left silencing expansion cavity and a right silencing expansion cavity; the snake-shaped communicating pipe 6 comprises a first half pipe 8 and a second half pipe 9 which are split into two halves, the partition plate 7 comprises a first half partition plate and a second half partition plate which are symmetrically split, the first half pipe 8 is fixedly connected with the first half partition plate, and the second half pipe 9 is fixedly connected with the second half partition plate; strip-shaped mounting grooves 10 are symmetrically formed in two side walls of the lower sound-deadening chamber, and edges of two sides of the partition plate 7 are clamped in the strip-shaped mounting grooves 10; the snake-shaped communicating pipe 6 comprises a U-shaped bent pipe part 602, a neck pipe part 601 and a tail pipe part 603 which are respectively connected with two ends of the U-shaped bent pipe part 602, the U-shaped bent pipe part 602 is positioned in the left silencing expansion cavity, the U-shaped bent pipe part 602 is provided with at least one pair of opening slits 11, and the two opening slits 11 are mutually symmetrical and respectively arranged on the first half pipe 8 and the second half pipe 9; an air inlet communicated with the air suction pipeline 5 is arranged below one side of the right silencing and expanding cavity, a spoiler 12 is arranged on the side edge of the air inlet of the right silencing and expanding cavity, and the spoiler 12 is abutted to one side of the end part of the tail pipe part 603.
The silencer is an internal component of the refrigerator compressor, is specifically arranged between the air suction pipe and the air suction valve plate of the compressor cylinder and is used for reducing noise when low-temperature and low-pressure gas sucked by the cylinder, and therefore the noise reduction capability is the most critical index for judging the quality of the silencer.
Compared with the existing product improvement, the improvement method has the key points that firstly, the snake-shaped communicating pipe 6 is arranged, so that the airflow changes the flow direction for many times, the flow resistance of the gas is increased, the energy attenuation of sound waves generated by reflection in the pipeline is increased, and the silencing effect is enhanced;
secondly, the U-shaped bent pipe part 602 is arranged in the left silencing expansion cavity and is matched with the opening slit 11, the position of the opening slit 11 is adjusted, the silencing frequency range can be effectively adjusted by utilizing the Helmholtz resonance silencing principle, and the silencing volume of the target frequency band is increased;
thirdly, the snake-shaped communicating pipe 6 and the partition plate 7 are designed in a split mode, so that the structure is simple, the structural strength is higher, the processing and the assembly are convenient, and the position, the number and the size of the opening slit 11 can be adjusted and designed more conveniently;
fourthly, strip-shaped mounting grooves 10 are symmetrically formed in two side walls of the lower anechoic chamber, edges of two sides of the partition plate 7 are clamped in the strip-shaped mounting grooves 10, and different communicating device assemblies are quickly replaced to enable the partition plate 7 to be located at different positions of the snake-shaped communicating pipe 6, so that the proportion of the snake-shaped communicating pipe 6 located in the left anechoic expansion cavity and the right anechoic expansion cavity is adjusted, and requirements of different target frequency bands on anechoic volume are met;
fifthly, the spoiler 12 supports the lower end port of the snake-shaped communicating pipe, so that the self vibration noise of the snake-shaped communicating pipe 6 is reduced, the direction of air flow during entering is adjusted, the turbulence phenomenon is reduced, the sound wave propagation direction is reflected, a certain sound wave mutual offset effect is formed, and the structural noise reduction effect is achieved;
sixthly, the two opening slits 11 are mutually symmetrical and are respectively arranged on the first half pipe 8 and the second half pipe 9, so that the forces borne by the air flow flowing out and in from the two sides of the snake-shaped communicating pipe 6 are mutually counteracted, and the vibration noise of the snake-shaped communicating pipe 6 is reduced.
Further, the horizontal partition plate 3 is provided with an upper cavity through pipe 16 and a lower cavity through pipe 16 which vertically penetrate through, the neck pipe part is connected with the upper cavity through pipe 16 and the lower cavity through pipe 16, and the bending direction of the neck pipe part 601 is opposite to that of the U-shaped bent pipe part 602. Through setting up neck pipe portion 601, make the air current carry out the switching-over many times in snakelike closed tube 6 to enter into the upper and lower sound chamber diffusion through last lower chamber siphunculus 16, further promote noise cancelling effect.
Further, the neck pipe portion 601 is located between the left silencing expansion cavity and the right silencing expansion cavity, and the neck pipe portion 601 is fixedly connected with the partition plate 7. By fixedly connecting the neck pipe part 601 with the partition plate 7, the partition plate 7 supports the neck pipe part 601, and the vibration noise of the snake-shaped communicating pipe 6 itself is reduced.
Further, the ports of the tailpipe portion 603 are disposed opposite to the intake port with a space therebetween. The gas enters the fast expansion of the silencing expansion cavity through the interval between the tail pipe part 603 and the gas inlet, the flow speed of the gas flow is slowed down, the pressure of the gas flow is reduced, and therefore the suction noise is reduced.
Further, the port of the tailpipe section 603 has an inclined angle with respect to the intake port. By making the inclined angle between the tailpipe section 603 and the air inlet, the air flow flowing out from the air inlet forms an angle when entering the tailpipe section 603, and the air flow is retarded by the inclined inner side wall of the tailpipe section 603, reducing the flow velocity, thereby further reducing the noise.
Further, first half pipe 8 the downside tip of second half pipe 9 all is equipped with engaging lug 13, engaging lug 13 of first half pipe 8 is equipped with the blind hole, engaging lug 13 of second half pipe 9 is equipped with and inserts the bolt in the blind hole. First half pipe 8 the downside tip of second half pipe 9 passes through engaging lug 13 interference block, makes first half pipe 8 be connected more firmly with second half pipe 9, reduces the vibration.
Further, the bending angle of the U-shaped bent pipe portion 602 is 60 ° to 150 °, wherein the pair of opening slits 11 is provided at a middle position of the U-shaped bent pipe portion 602. The opening slit 11 is arranged at the middle position of the U-shaped bent pipe part 602, so that the airflow can more easily escape from the snake-shaped communicating pipe 6 to enter the left silencing expansion cavity when passing through; through reducing the bend angle of U type bent pipe portion 602, can reduce the effect of hindering of U type bent pipe portion 602 to the air current and slow, improve compressor suction efficiency, through the bend angle of increase U type bent pipe portion 602, can increase the effect of hindering of U type bent pipe portion 602 to the air current and slow, improve the noise cancelling effect of silencer, through being 60 ~ 150 intervals with the bend angle of U type bent pipe portion 602 to obtain the balance of suction efficiency and noise cancelling effect.
The ratio of the sum of the neck pipe part 601 and the tail pipe part 603 to the U-shaped bent pipe part 602 is less than 0.5. The proportion of the U-shaped bent pipe part 602 in the whole snake-shaped communicating pipe is improved, and the silencing effect is further improved.
Further, the up end of horizontal partition plate 3 sets up the round boss 14 perpendicularly, boss 14 encloses to be located around the last port of snakelike closed tube 6, the upside of boss 14 is equipped with the micropore spacer (not shown in the figure), the peripheral edge of micropore spacer with the boss passes through pin fixed connection. The air flow flowing out from the snake-shaped communicating pipe 6 further reduces the flow rate and pressure of the air flow through the resistance of the microporous spacer, and then enters the air outlet pipeline 4.
Furthermore, a circle of connecting inserting plates are arranged on the peripheral side wall of the upper end of the lower silencing chamber 2, connecting inserting slots in interference fit with the connecting inserting plates are arranged on the peripheral side wall of the upper silencing chamber 1, and the lower silencing chamber 2 and the upper silencing chamber 1 are detachably mounted; the inner wall of the upper silencing chamber 1 and the inner wall of the lower silencing chamber 2 are connected through a joint to form an annular mounting groove, and the edges of the peripheral sides of the horizontal partition plates 3 are clamped in the annular mounting groove.
Further, a silencing protrusion 15 is arranged on the outer side of the end portion of the tail pipe portion 603, an inner cavity channel with a conical structure is arranged inside the silencing protrusion 15, and the silencing protrusion 15 is located on one side far away from the spoiler 12. The silencing bulge 15 and the spoiler 12 are oppositely arranged and matched with each other, so that when the airflow of the tail pipe part 603 flows out of the silencing bulge 15, the end part of the tail pipe part 603 is not stressed to vibrate; through the inner cavity channel with the conical structure, air flow in the tail pipe part 603 is easier to discharge, microcirculation is formed with end suction air flow, and air flow vibration noise caused by overlarge vacuumizing force during air suction is reduced.
Furthermore, the first half pipe 8 is provided with a first step structure along the end face of the pipe wall, the second half pipe 9 is provided with a second step structure along the end face of the pipe wall, and the first step structure is matched with the second step structure in an inserting mode to enable the first half pipe and the second half pipe to be clamped.
The upper end face of the snake-shaped communicating pipe 6 is provided with a step structure III matched with the upper cavity communicating pipe and the lower cavity communicating pipe 16, and the step structure III realizes the stable installation of the snake-shaped communicating pipe 6 and the upper cavity communicating pipe and the lower cavity communicating pipe 16.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A snake-shaped communicating pipe silencer for a refrigerator compressor is characterized by comprising an upper silencing chamber and a lower silencing chamber, wherein a horizontal partition plate is arranged between the upper silencing chamber and the lower silencing chamber, the upper side of the upper silencing chamber is connected with an air outlet pipeline, the outer side of the lower silencing chamber is connected with an air suction pipeline, the lower silencing chamber comprises a communicating device assembly, the communicating device assembly comprises a snake-shaped communicating pipe and a partition plate fixedly connected with the snake-shaped communicating pipe, and the partition plate divides the lower silencing chamber into a left silencing expansion cavity and a right silencing expansion cavity; the snake-shaped communicating pipe comprises a first half pipe and a second half pipe which are split into two halves, the partition plate comprises a first half partition plate and a second half partition plate which are symmetrically split, the first half pipe is fixedly connected with the first half partition plate, and the second half pipe is fixedly connected with the second half partition plate; strip-shaped mounting grooves are symmetrically formed in two side walls of the lower silencing chamber, and edges of two sides of the partition plate are clamped in the strip-shaped mounting grooves; the snakelike communicating pipe comprises a U-shaped bent pipe part, a neck pipe part and a tail pipe part, wherein the neck pipe part and the tail pipe part are respectively connected with two ends of the U-shaped bent pipe part; an air inlet communicated with the air suction pipeline is arranged below one side of the right silencing expansion cavity, a spoiler is arranged on the side edge of the air inlet of the right silencing expansion cavity, and the spoiler is abutted to one side of the end part of the tail pipe part.
2. The silencer of claim 1, wherein the horizontal partition plate has vertically penetrating upper and lower chamber pipes, the neck pipe portion is connected to the upper and lower chamber pipes, and the bending direction of the neck pipe portion is opposite to the bending direction of the U-shaped bent pipe portion.
3. The serpentine communication pipe muffler for a refrigerator compressor as claimed in claim 2, wherein the neck pipe portion is located between the left and right muffling expansion chambers, and the neck pipe portion is fixed to the partition plate.
4. The serpentine communication pipe muffler for a compressor of a refrigerator as claimed in claim 1, wherein the port of the tailpipe portion is disposed opposite to the intake port with a space therebetween; the port of the tailpipe portion has an inclined angle with respect to the inlet.
5. The serpentine communication pipe silencer for the refrigerator compressor as claimed in claim 1, wherein the first half pipe and the second half pipe are provided with connection lugs at lower ends thereof, the connection lug of the first half pipe is provided with a blind hole, and the connection lug of the second half pipe is provided with a plug inserted into the blind hole.
6. The silencer of claim 1, wherein the bent angle of the U-shaped bent pipe portion is 60 ° to 150 °, and wherein a pair of the open slits are provided at a middle position of the U-shaped bent pipe portion.
7. The serpentine communication pipe muffler for a refrigerator compressor as claimed in claim 1, wherein a ratio of a sum of the neck pipe portion and the tail pipe portion to the U-bend pipe portion is less than 0.5.
8. The silencer for the serpentine communicating pipe of the refrigerator compressor as claimed in claim 1, wherein a circle of boss is vertically arranged on the upper end surface of the horizontal partition plate, the boss is arranged around the upper end opening of the serpentine communicating pipe, a micropore partition is arranged on the upper side of the boss, and the peripheral edge of the micropore partition is fixedly connected with the boss through a pin.
9. The snake-shaped communicating pipe silencer for the refrigerator compressor as claimed in claim 1, wherein a circle of connecting insertion plate is arranged on the peripheral side wall of the upper end of the lower silencing chamber, a connecting insertion slot which is in interference fit with the connecting insertion plate is arranged on the peripheral side wall of the upper silencing chamber, and the lower silencing chamber and the upper silencing chamber are detachably mounted; the inner wall of the upper silencing chamber and the inner wall of the lower silencing chamber are connected through a connecting portion to form an annular mounting groove, and the edges of the peripheral sides of the horizontal partition plates are clamped in the annular mounting groove.
10. The serpentine communication pipe muffler for a refrigerator compressor as claimed in claim 1, wherein a silencing protrusion is provided at an outer side of an end of the tailpipe portion, and an inner cavity passage of a conical structure is provided inside the silencing protrusion, and the silencing protrusion is located at a side away from the spoiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110983460.0A CN113638865A (en) | 2021-08-25 | 2021-08-25 | S-shaped communicating pipe silencer for refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110983460.0A CN113638865A (en) | 2021-08-25 | 2021-08-25 | S-shaped communicating pipe silencer for refrigerator compressor |
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| Publication Number | Publication Date |
|---|---|
| CN113638865A true CN113638865A (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110983460.0A Pending CN113638865A (en) | 2021-08-25 | 2021-08-25 | S-shaped communicating pipe silencer for refrigerator compressor |
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| CN (1) | CN113638865A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114550685A (en) * | 2022-01-25 | 2022-05-27 | 哈尔滨理工大学 | Ventilating duct silencer based on folding type rough neck pipe Helmholtz resonant cavity |
-
2021
- 2021-08-25 CN CN202110983460.0A patent/CN113638865A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114550685A (en) * | 2022-01-25 | 2022-05-27 | 哈尔滨理工大学 | Ventilating duct silencer based on folding type rough neck pipe Helmholtz resonant cavity |
| CN114550685B (en) * | 2022-01-25 | 2022-09-02 | 哈尔滨理工大学 | Ventilating duct silencer based on folding type rough neck pipe Helmholtz resonant cavity |
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