CN202971095U - Partition plate and internal intubation tube structure of air suction silencer for compressor - Google Patents

Abstract

The utility model discloses a partition plate and internal intubation tube structure of an air suction silencer for a compressor. The structure comprises a first partition plate, a first internal intubation tube, a second partition plate and a second internal intubation tube, wherein the first internal intubation tube and the second internal intubation tube are respectively arranged on the first partition plate and the second partition plate; a suction inlet of the first internal intubation tube is formed over against an air suction port of the air suction silencer; and an opening in the upper end of the first internal intubation tube is formed over against a suction inlet in the lower end of the second internal intubation tube. The structure can give consideration to the requirements to the noise reduction and high efficiency effectively, and is especially suitable for being applied to high-noise hermetically sealed compressors.

Description

The dividing plate interpolation pipe structure of suction muffler for compressor

Technical field

The utility model relates to the dividing plate interpolation pipe structure of the plastics air suction silencer that is applied to hermetically sealed compressor.

Background technique

For hermetically sealed compressor, noise is an important indicator weighing its performance always.Use the noise that produces when air suction silencer can reduce compressor air suction better, the noise of valve block being patted valve seat also can play good soundproof effect.But then, the employing air suction silencer can increase the flow losses of refrigeration agent intakeport to a certain extent, reduces the overall performance of compressor.And the main noise frequency range that the different model compressor produces is also different.Therefore, compressor air suction silencer internal structure reasonable in design helps to improve the compressor overall performance, reduces the noise level of compressor.At present, the air suction silencer that uses on high-efficiency full-closed refrigeration compressor adopts a dividing plate and interpolation pipe that its inside is divided into two noise reduction chambers usually, to reduce noise.But along with the compressor user is more and more higher for low noise requirement, and the type of air suction silencer is also more and more, although improving, said structure can reduce noise, but all can increase the inhalation resistance of air suction silencer, reduce the overall performance of compressor, be difficult to satisfy simultaneously low noise and high efficiency requirement.

Summary of the invention

Technical problem to be solved in the utility model is to propose a kind of dividing plate interpolation pipe structure that can take into account simultaneously the suction muffler for compressor of noise reduction and efficient performance requirement.

For solving the problems of the technologies described above, the dividing plate interpolation pipe structure of the utility model suction muffler for compressor comprises the first dividing plate, the first interpolation pipe, second partition and the second interpolation pipe, described the first interpolation pipe and the second interpolation pipe are located at respectively on described the first dividing plate and second partition, the suction port of described the first interpolation pipe lower end and the intakeport of described air suction silencer over against the suction port of, the opening of described the first interpolation pipe upper end and described the second interpolation pipe lower end over against.

The above-mentioned compressor dividing plate interpolation pipe structure of air suction silencer, described the first interpolation pipe is U-shaped, described the second interpolation pipe is bent.

Above-mentioned compressor is respectively equipped with oil leaking hole with the dividing plate interpolation pipe structure of air suction silencer on described the first dividing plate and second partition.

The above-mentioned compressor dividing plate interpolation pipe structure of air suction silencer, described the first dividing plate will be divided near the noise reduction chamber of described air suction silencer intakeport two noise reduction chambers, the divergence ratio of described two noise reduction chambers is all greater than 4, and the volume of described two noise reduction chambers is identical.

The utility model is owing to adopting above-mentioned technical pattern, it is three noise reduction chambers with the interior separation of air suction silencer, three noise reduction chambers are communicated with by two interpolation pipes, the flow direction to refrigeration agent in breathing process has played good guiding function, the generation of eddy current in the time of effectively reducing flow of refrigerant, reduce flow resistance and the pressure loss of refrigeration agent, guarantee the overall performance of compressor.The first interpolation pipe will be divided near the noise reduction chamber of intakeport two noise reduction chambers, can reduce more targetedly noise on the less important frequency range of compressor by the length of adjusting U-shaped interpolation pipe, and Noise Reduction is better.Therefore, the utility model structure can effectively be taken into account noise reduction and efficient performance requirement, is particularly suitable for large noise hermetically sealed compressor.

Description of drawings

Fig. 1 is the external structure schematic diagram that adopts the compressor air suction silencer of the utility model structure;

Fig. 2 is the internal structure schematic diagram that adopts the compressor air suction silencer of the utility model structure;

Fig. 3 is the axle geodesic structure schematic diagram of the utility model the first dividing plate interpolation pipe;

Fig. 4 is the structural representation of facing of the utility model the first dividing plate interpolation pipe;

Fig. 5 is the plan structure schematic diagram of the utility model the first dividing plate interpolation pipe.

Embodiment

As shown in Figure 2, the dividing plate interpolation pipe structure of the utility model suction muffler for compressor comprises the first dividing plate 3, the first interpolation pipe 11, second partition 5 and the second interpolation pipe 12, the first interpolation pipe 11 is U-shaped (please consulting simultaneously Fig. 4), and it is located on the first dividing plate 3.The second interpolation pipe 12 is bent, and it is located on second partition 5.The frequency range that the length of 11 liang of arms of the first interpolation pipe is eliminated the noise according to the silencing apparatus needs is adjusted, and can accomplish to take into account the noise elimination of less important frequency range when eliminating main frequency range noise.The first dividing plate 3, second partition 5 and muffler shell 6 adopt the mode of direct buckles be connected (please consulting simultaneously Fig. 1), second partition 5 becomes two chambers with the baffler interior separation, and the first dividing plate 3 will be divided near the noise reduction chamber of intakeport 1 two noise reduction chambers 2,4 again.Refrigeration agent enters noise reduction chamber 2 by intakeport 1, then enters noise reduction chamber 4 by the interpolation pipe 11 on dividing plate 3.Due to the suction port 8 of intakeport 1 and the first interpolation pipe 11 over against, the opening 9 of the first interpolation pipe 11 and the suction port 13 of the second interpolation pipe 12 over against, so can effectively reduce the flow losses of baffler.Noise reduction chamber 2 is basic identical with the main frequency of noise elimination of noise reduction chamber 4, and less important frequency can be revised according to the length of the first interpolation pipe 11, to reach best erasure effect

As shown in Figure 3 and Figure 5, the first dividing plate 3 is provided with oil leaking hole 10, can effectively prevent the lubricant oil deposition.Also be provided with oil leaking hole on second partition 5.

Theoretical according to the noise elimination of simple expansion chamber silencing apparatus, the sound deadening capacity during single chamber is:

$\mathrm{\ΔL}=10\lg (1+\frac{1}{4}{(m-\frac{1}{m})}^2{\sin }^2\mathrm{kL})---\left(1\right)$

In formula, divergence ratio m is the ratio of noise reduction chamber sectional area S and interpolation pipe sectional area s; K is velocity of wave; L is the length of noise reduction chamber.

When the noise reduction chamber was divided into two noise reduction chambers: total sound deadening capacity was:

$\mathrm{\Δ}{L}^{\′}=\mathrm{\Δ}{L}_1+\mathrm{\Δ}{L}_2=10\lg (1+\frac{1}{4}{(m_1-\frac{1}{m_1})}^2{\sin }^2\mathrm{kL})+10\lg (1+\frac{1}{4}{(m_2-\frac{1}{m_2})}^2{\sin }^2\mathrm{kL})---\left(2\right)$

M in formula ₁, m ₂Be two noise reduction chambers divergence ratios separately, ignore block board thickness, satisfy m=m ₁+ m ₂

The main frequency range of eliminating the noise N=0.1.2.3 ... near, work as m ₁m ₂＞4 o'clock, Δ L '＞Δ L.

When

The time, Δ L ' maximum, so baffler chamber of said structure, only need to guarantee that two noise reduction chambers 2 that the first dividing plate 3 is divided into, 4 divergence ratio are all greater than 4, and two noise reduction chambers 2 that the first dividing plate 3 is separated, 4 volume are as far as possible identical, the acoustical absorptivity in compressor main noise frequency range is stronger, can play better Noise Reduction.

After tested, the acoustic attenuation performance of the utility model contracting machine air suction silencer dividing plate interpolation pipe structure has good soundproof effect near 900HZ, 2700HZ, taken into account simultaneously the soundproof effect of some less important frequency ranges.Therefore, the present invention can under the prerequisite that guarantees the air suction silencer gettering efficiency, reduce the noise level of compressor effectively.

Claims (4)

1. the dividing plate interpolation pipe structure of suction muffler for compressor, it is characterized in that, comprise the first dividing plate, the first interpolation pipe, second partition and the second interpolation pipe, described the first interpolation pipe and the second interpolation pipe are located at respectively on described the first dividing plate and second partition, the suction port of described the first interpolation pipe lower end and the intakeport of described air suction silencer over against the suction port of, the opening of described the first interpolation pipe upper end and described the second interpolation pipe lower end over against.

2. the dividing plate interpolation pipe structure of suction muffler for compressor as claimed in claim 1, is characterized in that, described the first interpolation pipe is U-shaped, and described the second interpolation pipe is bent.

3. the dividing plate interpolation pipe structure of suction muffler for compressor as claimed in claim 1 or 2, is characterized in that, is respectively equipped with oil leaking hole on described the first dividing plate and second partition.

4. the dividing plate interpolation pipe structure of suction muffler for compressor as claimed in claim 1 or 2, it is characterized in that, described the first dividing plate will be divided near the noise reduction chamber of described air suction silencer intakeport two noise reduction chambers, the divergence ratio of described two noise reduction chambers is all greater than 4, and the volume of described two noise reduction chambers is identical.

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