CN212535982U - Special-shaped communicated silencer for refrigerator compressor - Google Patents

Abstract

The utility model discloses a dysmorphism UNICOM muffler for refrigerator compressor belongs to muffler technical field, the epitheca forms the holding chamber with the inferior valve cooperation, the holding intracavity has a plurality of amortization rooms that cut off, the amortization room includes upper amortization room, left amortization room and right amortization room, the coiled tubing assembly passes a plurality of amortization rooms, just the one end of coiled tubing assembly with the breathing pipe intercommunication, the other end of coiled tubing assembly with the outlet duct intercommunication, be equipped with the upper dilation hole of the right amortization room of difference intercommunication, the left dilation hole of the left amortization room of intercommunication and the upper dilation hole of the amortization room on the coiled tubing assembly in proper order. The utility model discloses a breathing pipe, coiled pipe subassembly and outlet duct series connection in proper order, gaseous directly discharge from the outlet duct through the coiled pipe subassembly after getting into from the breathing pipe, reduced the route of circulation of gas and the resistance of gas flow, reduce loss of pressure, be favorable to improving into, exhaust flow.

Description

Special-shaped communicated silencer for refrigerator compressor

Technical Field

The utility model relates to a muffler technical field, in particular to dysmorphism UNICOM muffler for refrigerator compressor.

Background

With the increasing improvement of the living standard of people and the pursuit of living quality, the requirement on the noise quality of the household refrigerator is higher and higher; in addition, the housing area caused by high housing price develops towards miniaturization and multifunction, and the national requirements on energy conservation and consumption reduction in reasonable resource use lead the household refrigerator to move towards frequency conversion, energy conservation and mute miniaturization. And the compressor is a key component for power consumption and noise generation of the refrigerator. The compressor is used as the main noise generating source of the refrigerator, and is the noise generated by the joint coupling of the friction of a mechanical kinematic pair of the compressor, the opening and closing of a suction and exhaust valve, electromagnetic excitation, other vibration and the like. Because the noise source of the compressor is complex, the suction muffler arranged in the suction oil path part of the compressor is an important part of the compressor for active noise reduction, and is always the focus of noise reduction design.

Chinese patent No. CN205207087U discloses an impedance composite type direct air suction muffler for a refrigerator compressor, which comprises an upper chamber, a lower chamber, an air suction pipe flange, and an S pipe assembly, wherein the air suction flange and the lower chamber are integrated, the S pipe assembly is fixed inside the lower chamber, and the upper chamber is arranged at the top of the lower chamber; the S pipe assembly consists of a left S pipe and a right S pipe, and the left S pipe consists of a left S pipe partition plate, an expansion cavity and a left S pipeline which form an integral part; the right S pipe is an integral component consisting of a right clapboard and a right S pipeline; the left S-tube partition plate and the right S-tube partition plate are clamped and fixed in the lower cavity fixing rib plate, the lower cavity is divided into a first silencing cavity and a second silencing cavity by the partition plates, a first expansion hole of the S-tube assembly is located in the first silencing cavity, and a second expansion hole of the S-tube assembly is located in the second silencing cavity; the upper cavity and the S pipe assembly form a third silencing cavity, the air suction pipe of the S pipe assembly and the air suction pipe of the upper cavity keep a certain distance to form an expansion hole, the expansion hole and the third silencing cavity form a double-layer expansion resonance structure, and the air suction pipes are arranged in a staggered mode in cross section. However, by adopting the structure, the gas exhausted from the gas suction pipe of the gas flow S pipe assembly is firstly expanded through the gas flow and then exhausted from the gas suction pipe of the upper cavity through the silencing cavity III, so that the gas inlet and exhaust flow is reduced; secondly, the pipe diameter tortuosity of the S pipe assembly is large, so that the exhaust resistance is large; moreover, the silencing frequency band of the suction silencer still needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the prior art, the utility model aims to provide a dysmorphism UNICOM muffler for refrigerator compressor, through breathing pipe, serpentine pipe subassembly and outlet duct series connection in proper order inject airflow channel, and gas directly discharges from the outlet duct through the serpentine pipe subassembly after getting into from the breathing pipe, has reduced the route of circulation of gas and the resistance of gas flow, reduces loss of pressure, is favorable to improving into, exhaust flow.

In order to achieve the above object, the present invention is specifically realized by the following techniques:

the utility model provides a dysmorphism UNICOM muffler for refrigerator compressor, includes epitheca, inferior valve, breathing pipe, outlet duct and coiled pipe subassembly, the epitheca forms the holding chamber with the cooperation of inferior valve, the holding intracavity has the amortization room of a plurality of partitions, the amortization room includes upper amortization room and lower amortization room, lower amortization room includes left amortization room and right amortization room, the coiled pipe subassembly passes a plurality of amortization rooms, just the one end of coiled pipe subassembly with the breathing pipe intercommunication, the other end of coiled pipe subassembly with the outlet duct intercommunication, be equipped with the right expanding hole of communicating right amortization room respectively on the coiled pipe subassembly, communicate left expanding hole of left amortization room and the last expanding hole of communicating upper amortization room.

Adopt above-mentioned technical scheme: the 2 clapboards divide the holding cavity into 3 silencing chambers to form a reactive silencer structure of the resonant cavity, sound is transmitted into the coiled pipe assembly by the air suction pipe, when the sound passes through the right silencing chamber, an elastic resonance system is formed by utilizing an air column at the position of a right expansion hole and air in the right silencing chamber, when the external noise frequency is the same as the natural frequency of the resonance system, the air column in the right expansion hole resonates and violently rubs with the hole wall, the friction can consume sound energy, thereby achieving the aim of silencing, gas subjected to primary noise reduction is expanded into the left silencing chamber from the left expansion hole, subjected to secondary resonance noise reduction again to eliminate noise of another frequency band, and then gas subjected to secondary noise reduction enters the upper silencing chamber to perform tertiary resonance noise reduction, so that a large amount of energy is lost, the noise is greatly reduced, and a good noise reduction and silencing effect is achieved. Through breathing pipe, serpentine pipe subassembly and outlet duct are series connection in proper order, promptly the serpentine pipe subassembly respectively with breathing pipe and outlet duct lug connection, and then inject the air current passageway, gaseous directly discharges from the outlet duct through the serpentine pipe subassembly after getting into from the breathing pipe, has reduced the route of gas circulation and the resistance that the gas flows, reduces loss of pressure, is favorable to improving into, exhaust flow. And secondly, an inner hole of the upper silencing chamber is opened, and when the air suction valve is closed, air is released to the upper silencing chamber, so that the air flow hedging noise is reduced.

Furthermore, the coiled pipe assembly comprises a horizontal pipe section, a U-shaped pipe section, an arc-shaped pipe section and a vertical pipe section which are sequentially connected, wherein the horizontal pipe section is over against the air outlet of the air suction pipe, and the vertical pipe section is over against the air inlet of the air suction pipe.

Furthermore, two edges of the U-shaped pipe section form an included angle of 15-18 degrees.

Above-mentioned structure makes the gas that gets into the coiled pipe subassembly carry out the straight line earlier and flows, then turns to through U type pipe section, and the transition of again by the arc pipeline section enters into vertical pipe section, and gaseous flow is more steady, and reducible loss of pressure makes the gaseous velocity of flow in the coiled pipe subassembly steadily reduce under the prerequisite of guaranteeing sufficient air input or gas output, effectual reduction because the noise that the high-speed flow of gas brought.

Furthermore, the silencing frequency bands of the right silencing chamber, the left silencing chamber and the upper silencing chamber are sequentially increased.

Furthermore, the volumes of the left silencing chamber and the right silencing chamber are equivalent, and the volume of the upper silencing chamber is smaller than that of the left silencing chamber.

Further, the aperture of the right expanded hole is larger than that of the left expanded hole.

Further, the aperture of the right expansion hole is 4-6 mm, and the apertures of the left expansion hole and the upper expansion hole are 1-3 mm.

Further, the inner diameter of the coiled pipe assembly is 4-8 mm.

Because the volume ratio of the expanding hole to the silencing chamber determines the silencing effect of a certain frequency band for eliminating noise, the hole diameter of the expanding hole has a calculation relation with the silencing frequency, and the larger the hole diameter is, the lower the silencing frequency is. By adopting the technical scheme, the expanding holes with different hole diameters and the silencing chambers with different volumes are arranged, so that the resonance frequencies of the silencing chambers are separated, the total silencing quantity can be improved, the frequency characteristic of the silencer can be improved, and a better noise reduction and silencing effect can be obtained in a wide frequency band range. The right expansion hole is used for eliminating low-frequency noise of 800Hz or below, and the aperture of the left expansion hole is smaller than that of the right expansion hole and is used for eliminating noise of 1000 Hz; the upper orifice has substantially the same diameter as the left orifice but the volume of the upper muffling chamber is reduced, so the upper orifice serves to cancel 1830Hz noise. Noise energy of a plurality of frequencies is reduced in sequence through a plurality of resonant cavities, the effect of effectively controlling noise is achieved, the noise reduction frequency band is increased in sequence, and high-frequency noise generated secondarily due to low-frequency noise elimination is avoided.

Furthermore, two ends of the serpentine pipe assembly are fixedly connected with the inner wall of the accommodating cavity, and the middle part of the serpentine pipe assembly and the partition plate are integrally formed; the stability of the coiled pipe assembly is improved. The coil pipe assembly in the prior art is generally clamped or inserted and fixed through the partition plate, the air suction silencer generates a thermal expansion phenomenon under the high-temperature action of the compressor during operation, and the coil pipe assembly fixed through clamping or insertion is easy to shake and generate noise. And adopt the middle part to pass through the baffle fixed, and the tip passes through the fixed structure of inner wall for its fixed position is unchangeable, is difficult to take place to rock, thereby reaches the effect that noise abatement produced.

The utility model has the advantages that:

1. through breathing pipe, serpentine pipe assembly and outlet duct are connected in series in proper order, inject the air current passageway, and gas is direct to be discharged from the outlet duct through serpentine pipe assembly after getting into from breathing pipe, has reduced the route of gas circulation and the resistance that the gas flows, reduces pressure loss, is favorable to improving into, exhaust flow.

2. The serpentine pipe assembly comprises horizontal pipeline section, U type pipeline section, arc pipeline section and the vertical pipeline section that connects gradually for the gas that gets into the serpentine pipe assembly carries out the straight line earlier and flows, then turns to through U type pipeline section, enters into vertical pipeline section by the transition of arc pipeline section again, and gaseous flow is more steady, and existing unobstructed nature is good, the advantage that the discharge resistance is little, has the good advantage of noise elimination effect of circuitous nature again simultaneously.

3. Noise energy of a plurality of frequencies is reduced in sequence through a plurality of resonant cavities, the effect of effectively controlling noise is achieved, the noise reduction frequency band is increased in sequence, and high-frequency noise generated secondarily due to low-frequency noise elimination is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a special-shaped communicating muffler for a refrigerator compressor of embodiment 1;

FIG. 2 is a schematic structural view of the serpentine tube assembly of example 1;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a bottom view of FIG. 2;

FIG. 5 is a diagram showing the muffling effect of the irregularly-shaped communicating muffler for a refrigerator compressor of embodiment 2;

in the figure, 1, an upper shell; 2. a lower case; 3. an air intake duct; 4. an air outlet pipe; 5. an upper silencing chamber; 6. a left anechoic chamber; 7. a right muffling chamber; 8. a horizontal partition plate; 9. a vertical partition; 10. a serpentine tube assembly; 101. a horizontal pipe section; 102. a U-shaped pipe section; 103. an arc-shaped pipe section; 104. a vertical pipe section; 11. a right dilation hole; 12. a left dilated hole; 13. and an upper expanded aperture.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

A special-shaped communicated silencer for a refrigerator compressor is disclosed, and referring to FIGS. 1-4, the special-shaped communicated silencer comprises an upper shell 1 and a lower shell 2, wherein a suction pipe 3 is arranged on the side wall of the lower shell 2, the upper shell 1 is covered on the lower shell 2, an air outlet pipe 4 is arranged in the middle of the upper shell 1, the upper shell 1 and the lower shell 2 are matched to define a containing cavity, a plurality of partitioned silencing chambers are arranged in the containing cavity, each silencing chamber comprises an upper silencing chamber 5 and a lower silencing chamber, each lower silencing chamber comprises a left silencing chamber 6 and a right silencing chamber 7, specifically, a plurality of partition plates are arranged in the containing cavity, each partition plate comprises a horizontal partition plate 8 and a vertical partition plate 9 which are perpendicular to each other, and the horizontal partition plate 8 divides the containing cavity into the upper silencing chamber 5 and the lower silencing chamber to form a structure with two cavities arranged in parallel; the lower muffling chamber is internally provided with a vertical baffle 9, the lower muffling chamber is divided into a left muffling chamber 6 and a right muffling chamber 7 by the vertical baffle 9, a two-chamber parallel arrangement structure is formed, and the thickness of the baffle is 1.5-2 mm, so that the better rigidity is ensured.

The holding intracavity still sets firmly snakelike pipe assembly 10, snakelike pipe assembly 10 runs through vertical baffle 9 and horizontal baffle 8, just the one end of snakelike pipe assembly 10 with breathing pipe 3 intercommunication, the other end of snakelike pipe assembly 10 with outlet duct 4 intercommunication, preferred the both ends of snakelike pipe assembly 10 with the inner wall fixed connection in holding chamber, the middle part of snakelike pipe assembly 10 with baffle integrated into one piece, promptly, snakelike pipe assembly 10 is connected with the inner wall in baffle and holding chamber respectively through a plurality of positions, is set firmly the holding intracavity is favorable to improving the fixed stability of snakelike pipe assembly 10. Referring to fig. 2 to 3, the serpentine tube assembly 10 includes a horizontal tube section 101, a U-shaped tube section 102, an arc-shaped tube section 103, and a vertical tube section 104, which are connected in sequence, wherein two sides of the U-shaped tube section 102 have an included angle of 15 to 18 degrees (see fig. 4), that is, a certain staggered angle is formed, so as to avoid generation of a vortex, the horizontal tube section 101 faces an air outlet of the air suction tube 3, and the vertical tube section 104 faces an air inlet of the air suction tube 3. The structure enables gas entering the coiled pipe assembly 10 to flow linearly firstly, then turns to the direction through the U-shaped pipe section 102, and then enters the vertical pipe section 104 through the transition of the arc-shaped pipe section 103, so that the gas flows more stably, and the coiled pipe assembly has the advantages of good smoothness and small discharge resistance, and also has the advantage of good noise elimination effect.

The air suction pipe 3, the serpentine pipe assembly 10 and the air outlet pipe 4 are sequentially connected in series, so that an air outlet flow channel is defined; the coiled pipe assembly 10 is sequentially provided with a right expansion hole 11 communicated with the right silencing chamber 7, a left expansion hole 12 communicated with the left silencing chamber 6 and an upper expansion hole 13 communicated with the upper silencing chamber 5, namely: the part of the coiled pipe assembly 10 positioned in the right silencing chamber 7 is provided with a right expansion hole 11 communicated with the right silencing chamber cavity 7, the part of the coiled pipe assembly 10 positioned in the left silencing chamber 6 is provided with a left expansion hole 12 communicated with the left silencing chamber 6, the part of the coiled pipe assembly 10 positioned in the upper silencing chamber 5 is provided with an upper expansion hole 13 communicated with the upper silencing chamber 5, and the upper expansion holes 13 are 2 and are symmetrically arranged.

Adopt above-mentioned technical scheme: through breathing pipe 3, snakelike pipe assembly 10 and outlet duct 4 connect in proper order in series, inject the air outlet channel, gas is directly discharged from outlet duct 4 through snakelike pipe assembly 10 after getting into from breathing pipe 3, has reduced the route of gas circulation and the resistance that the gas flows, reduces pressure loss, is favorable to improving into, exhaust flow.

Example 2

Example 2 is essentially the same as example 1, except that: in order to widen the frequency band of noise reduction and noise reduction, the partition plate is further limited to be arranged at the central part of the lower silencing chamber, so that the volumes of the left silencing chamber 6 and the right silencing chamber 7 are equivalent, the volume of the upper silencing chamber 5 is smaller than the volume of the left silencing chamber 6, the aperture of the right expanding hole 11 is 4-6 mm, the apertures of the left expanding hole 12 and the upper expanding hole 13 are 1-3 mm, and the inner diameter of the coiled pipe assembly 10 is 4-8 mm, so that the silencing frequency bands of the right silencing chamber 7, the left silencing chamber 6 and the upper silencing chamber 5 are sequentially increased; in this embodiment, the diameter of the expanded hole is 5mm, the diameters of the left expanded hole 12 and the upper expanded hole 13 are 2mm, and the inner diameter of the serpentine tube assembly 10 is 6.5 mm.

Adopt above-mentioned technical scheme: through the noise energy of a plurality of frequencies of a plurality of resonance chambers subducting in proper order, reach the effect of effective control noise, the amortization frequency channel increases in proper order moreover, has avoided the high frequency noise because of eliminating low frequency noise secondary emergence. According to simulating its noise elimination effect with noise analysis software, see fig. 5, each anechoic room of the utility model is effectual at a plurality of frequency channels noise elimination.

Claims (9)

1. A special-shaped communicated silencer for a refrigerator compressor is characterized by comprising an upper shell (1), a lower shell (2), an air suction pipe (3), an air outlet pipe (4) and a coil pipe assembly (10), the upper shell (1) and the lower shell (2) are matched to form an accommodating cavity, a plurality of partitioned anechoic chambers are arranged in the accommodating cavity, the silencing chamber comprises an upper silencing chamber (5) and a lower silencing chamber, the lower silencing chamber comprises a left silencing chamber (6) and a right silencing chamber (7), the serpentine tube assembly (10) penetrates through the silencing chambers, and one end of the serpentine pipe assembly (10) is communicated with the air suction pipe (3), the other end of the serpentine pipe assembly (10) is communicated with the air outlet pipe (4), the coiled pipe assembly (10) is sequentially provided with a right expanding hole (11) which is respectively communicated with the right silencing chamber (7), a left expanding hole (12) which is communicated with the left silencing chamber (6) and an upper expanding hole (13) which is communicated with the upper silencing chamber (5).

2. The shaped communication silencer for a refrigerator compressor according to claim 1, characterized in that said serpentine tube assembly (10) comprises a horizontal tube section (101), a U-shaped tube section (102), an arc-shaped tube section (103) and a vertical tube section (104) connected in sequence, said horizontal tube section (101) facing the air outlet of said air suction tube (3) and said vertical tube section (104) facing the air inlet of said air suction tube (3).

3. The special-shaped communicating silencer for the refrigerator compressor as claimed in claim 2, wherein two sides of the U-shaped pipe section (102) have an included angle of 15-18 degrees.

4. The heteromorphic communication silencer for a refrigerator compressor according to claim 1, characterized in that the silencing frequency bands of the right (7), left (6) and upper (5) silencing chambers increase in sequence.

5. The muffler for refrigerator compressors characterized in that, as set forth in claim 4, the volumes of said left muffling chamber (6) and said right muffling chamber (7) are equivalent, and the volume of said upper muffling chamber (5) is smaller than the volume of said left muffling chamber (6).

6. The muffler for refrigerator compressors of claim 4, characterized in that the diameter of said right expanded hole (11) is greater than the diameter of said left expanded hole (12).

7. The special-shaped communicating silencer for the refrigerator compressor according to claim 6, wherein the diameter of the right expanded hole (11) is 4-6 mm, and the diameters of the left expanded hole (12) and the upper expanded hole (13) are 1-3 mm.

8. The muffler for a refrigerator compressor according to any one of claims 1 to 7, wherein the inner diameter of the coil assembly (10) is 4 to 8 mm.

9. The special-shaped communication silencer for the refrigerator compressor according to any one of claims 1 to 7, wherein two ends of the serpentine pipe assembly (10) are fixedly connected with the inner wall of the accommodating cavity, and the middle part of the serpentine pipe assembly (10) is integrally formed with the partition plate.

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