CN210599316U - Air suction silencer with conical air suction pipeline structure - Google Patents
Air suction silencer with conical air suction pipeline structure Download PDFInfo
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- CN210599316U CN210599316U CN201920975136.2U CN201920975136U CN210599316U CN 210599316 U CN210599316 U CN 210599316U CN 201920975136 U CN201920975136 U CN 201920975136U CN 210599316 U CN210599316 U CN 210599316U
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Abstract
The utility model discloses a take toper muffler of breathing in of pipeline structure, including muffler box, baffle and muffler lid, be equipped with the air inlet pipeline on the muffler box, be equipped with the interpolation pipeline on the baffle, be equipped with the air outlet pipeline on the muffler lid, air inlet pipeline, interpolation pipeline and air outlet pipeline constitute the air inlet pipeline of the muffler of breathing in, and air inlet pipeline, interpolation pipeline and air outlet pipeline's inner tube are the toper, and air inlet pipeline, interpolation pipeline and air outlet pipeline's inner tube entry end pipe diameter is greater than the exit end pipe diameter. Adopt the utility model discloses the muffler of breathing in can further improve the runner structure, has promoted the gas transmission ability of the muffler of breathing in well, reduces its flow loss, promotes the mass flow of breathing in to promote compressor refrigerating output and complete machine energy efficiency ratio. Meanwhile, the expansion ratio can be adjusted to effectively balance the flow loss and the transmission loss of the suction muffler, improve the noise of the compressor and realize the optimization of comprehensive performance.
Description
Technical Field
The utility model belongs to the technical field of the compressor technique and specifically relates to a be applied to reciprocating piston compressor's area toper muffler of breathing in of pipeline structure.
Background
The suction muffler is a key part influencing the overall energy efficiency ratio and noise of the compressor. In the air suction process of the compressor, refrigerant gas enters the air suction hole of the valve plate through the air suction silencer and then enters the cylinder. When refrigerant gas passes through an internal pipeline of the suction muffler, the problem of insufficient gas transmission quantity exists, and the mass flow in the suction process is influenced, so that the refrigerating capacity is influenced, and the energy efficiency ratio of the whole compressor is finally influenced. Therefore, in order to increase the gas transmission amount of the suction muffler and reduce the flow loss of the refrigerant gas in the internal pipe of the suction muffler, it is important to consider how to optimize the structure of the suction pipe. Meanwhile, another important function of the suction muffler is to reduce the overall noise of the compressor through transmission loss. In the past engineering practice, the fluid performance and the acoustic performance of the suction muffler are two contradictory indexes, and cannot be optimized and improved simultaneously. How to seek a technical scheme aiming at the air suction silencer and balancing the fluid performance and the acoustic performance of the air suction silencer, and reducing the noise of the whole compressor or not influencing the noise of the whole compressor while improving the energy efficiency ratio of the whole compressor is an industrial problem in the development process of the compressor.
Disclosure of Invention
The utility model aims to solve the technical problem that a take toper muffler of breathing in of pipeline structure that can improve compressor complete machine energy efficiency ratio and noise effect simultaneously is provided.
For solving the technical problem, the utility model relates to a take toper muffler of breathing in of pipeline structure includes muffler box, baffle and muffler lid, be equipped with the air inlet pipeline on the muffler box, be equipped with the interpolation pipeline on the baffle, be equipped with the air outlet pipeline on the muffler lid, air inlet pipeline, interpolation pipeline and air outlet pipeline constitute the air inlet pipeline of the muffler of breathing in, the inner tube of air inlet pipeline, interpolation pipeline and air outlet pipeline is the toper, air inlet pipeline, interpolation pipeline and air outlet pipeline's inner tube entry end pipe diameter is greater than the exit end pipe diameter.
In the air suction muffler with the conical air suction pipeline structure, the conicity of the inner pipes of the air inlet pipeline, the inner inserting pipeline and the air outlet pipeline is 3-15 degrees respectively.
According to the air suction silencer with the conical air suction pipeline structure, the air inlet pipeline, the inner inserting pipeline and the air outlet pipeline have the same inner pipe taper.
In the air suction muffler with the conical air suction pipeline structure, the conicity of the inner pipes of the air inlet pipeline, the inner inserting pipeline and the air outlet pipeline is respectively 7 degrees.
In the air suction muffler with the conical air suction pipeline structure, the taper of the inner pipe of the air inlet pipeline is 7 degrees, the taper of the inner pipe of the inner inserting pipeline is 10 degrees, and the taper of the inner pipe of the air outlet pipeline is 13 degrees.
According to the air suction silencer with the conical air suction pipeline structure, the inlet of the inner insertion pipeline is opposite to the outlet of the air inlet pipeline, and the inlet of the air outlet pipeline is opposite to the outlet of the inner insertion pipeline.
According to the air suction silencer with the conical air suction pipeline structure, the cross sections of the inlet and the outlet of the air inlet pipeline, the inlet pipeline and the outlet pipeline are circular or oval.
Above-mentioned take toper muffler of breathing in of pipeline structure, interpolation pipeline is the straight tube.
According to the air suction silencer with the conical air suction pipeline structure, the inserted pipeline is a bent pipe, and the shape of the inserted pipeline is L-shaped, U-shaped or C-shaped.
According to the air suction silencer with the conical air suction pipeline structure, the circular arc surface flow guide structure is arranged at the outlet of the air outlet pipeline.
Above-mentioned take toper muffler of breathing in of pipeline structure, the baffle is placed horizontally or is placed vertically.
The utility model discloses owing to adopted above-mentioned technical scheme, the inner tube design of air inlet pipeline, interpolation pipeline and air outlet pipeline becomes the taper pipe, and the exit of air outlet pipeline is equipped with arc surface water conservancy diversion structure, has further improved the runner structure, has promoted the gas transmission ability of the muffler of breathing in well, reduces its flow loss, promotes the mass flow of breathing in to promote compressor refrigerating output and complete machine energy efficiency ratio. The inner pipes at different positions of the flow direction of the refrigerant of the suction pipeline can use the same or different tapers to form the same taper or taper gradient pipeline, so that a specific taper difference is formed, the air intake capacity of the suction pipeline is optimized under the action of pressure difference, the air delivery capacity of the suction muffler is optimized, the refrigeration capacity is improved, and the refrigeration efficiency is improved. Meanwhile, the utility model discloses among the technical scheme, can balance the flow loss and the transmission loss of breathing in the muffler effectively through the adjustment expansion ratio, improve the compressor noise, make its comprehensive properties optimum. Therefore, adopt the utility model discloses the muffler of breathing in can improve the complete machine energy efficiency ratio and the noise effect of compressor simultaneously.
Drawings
Fig. 1 is a schematic perspective view of the suction muffler of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is a schematic view of the front internal cross-sectional structure of the suction muffler of the present invention;
FIG. 4 is a schematic side view of the intake silencer of the present invention;
FIG. 5 is a schematic view of the exploded structure of the suction muffler of the present invention;
fig. 6 is a graph of the change in mach number over time of the refrigerant gas in the suction muffler piping of the present invention (R290 refrigerant);
fig. 7 is a graph of the change in refrigerant gas density over time in the suction muffler line of the present invention (R290 refrigerant).
Detailed Description
As shown in fig. 1 and 5, the suction muffler with a conical suction pipeline structure of the present invention includes a muffler box 5, a partition plate 3 and a muffler cover 2, and the partition plate 3 can be installed in a horizontal direction or a vertical direction (in this embodiment, the partition plate is horizontally disposed), so as to form an upper muffler chamber 9 and a lower muffler chamber 8 (please refer to fig. 3 and 4 at the same time).
As shown in fig. 2, 3 and 4, an air outlet pipeline 1 is arranged on the muffler cover 2, an air inlet pipeline 4 is arranged on the muffler box 5, an inserted pipeline 7 is arranged on the partition plate 3, the cross sections of the inlet and outlet of the air inlet pipeline 4, the inserted pipeline 7 and the air outlet pipeline 1 are circular or elliptical, and the inserted pipeline 7 is straight (a bent pipe can also be adopted, and the bent pipe can be L-shaped, U-shaped or C-shaped). The inlet of the inner inserting pipeline 7 is opposite to the outlet of the air inlet pipeline 4, and the inlet of the air outlet pipeline 1 is opposite to the outlet of the inner inserting pipeline 7. The baffle 3, the inserted pipeline 7, the upper silencing cavity 9 and the lower silencing cavity 8 jointly form an expansion cavity type air suction silencer (when the baffle 3 is vertically placed, a C-shaped air suction taper hole pipeline can be used, and a window and a silencer cavity are arranged on the pipeline to form a resonance cavity type air suction silencer). The air inlet pipeline 4, the inner inserting pipeline 7 and the air outlet pipeline 1 form an air suction pipeline of the air suction silencer to form a gas transmission path of refrigerant gas. In the air suction process of the compressor, refrigerant gas finally enters the cylinder through the air inlet pipeline 4, the inserted pipeline 7 and the air outlet pipeline 1. The inner pipes of the air inlet pipeline 4, the inner inserting pipeline 7 and the air outlet pipeline 1 are all designed as taper pipes, so that a pressure difference exists between an inlet and an outlet in the whole air inlet pipeline, the refrigerant gas is driven to flow rapidly, and the flow loss is reduced. The pipe diameters of the inlet ends of the inner pipes of the air inlet pipeline 4, the inner inserting pipeline 7 and the air outlet pipeline 1 are all larger than the pipe diameter of the outlet end. After the refrigeration compressor operates stably, the mass flow at the inlet and the outlet of the suction muffler is equal, and the flow is the product of the flow velocity and the sectional area of the pipeline. The sectional area of the outlet end is small, the flow velocity is large, the sectional area of the inlet end is large, and the flow velocity is small. In addition, for refrigerant gases, gravity can be ignored, and the Bernoulli force equation can be simplified to
Where P is the refrigerant gas pressure, ρ is the refrigerant gas density, v is the refrigerant gas flow rate, and C is a constant. When the refrigerant gas flows through the suction muffler, it is considered to be an incompressible flow, and the conditions that the density is constant and the Mach number is less than 0.3 are satisfiedReferring to fig. 6 and 7, the simplified bernoulli equation applies. According to a simplified Bernoulli equation, the inlet end has a large cross section, a small flow velocity and a large pressure, the outlet end has a small cross section, a large flow velocity and a small pressure, a positive pressure gradient is formed in the flowing direction of the refrigerant gas, the refrigerant gas is driven to flow rapidly, and the gas transmission capacity is improved.
The inner pipes of the pipelines (namely the air inlet pipeline 4, the interpolation pipeline 7 and the air outlet pipeline 1) at different positions of the air suction pipeline can adopt the same taper or different tapers, the taper size can be optimized within the range of 3-15 degrees, and a specific taper difference is formed, so that the pressure difference between the inlet and the outlet of the air inlet pipeline is optimal, and the capability of driving refrigerant gas is strongest. Experimental data show that when different tapers are used to form a taper gradient, in the flowing direction of the refrigerant, when the taper of the air inlet pipeline 4 is 7 degrees, the taper of the inner inserting pipeline 7 is 10 degrees, and the taper of the air outlet pipeline 1 is 13 degrees, the refrigeration capacity is improved by 2.73% and the energy efficiency ratio is improved by 2.56% by using the R290 working medium compared with a non-taper pipeline. When the inner tube tapers of the air inlet pipeline 4, the inner inserting pipeline 7 and the air outlet pipeline 1 are the same and are all 7 degrees, the R290 refrigerant is used, compared with a non-taper pipeline, the refrigerating capacity is improved by 2.33%, and the energy efficiency ratio is improved by 2.21%.
As shown in fig. 2 and 4, the circular arc surface flow guiding structure 6 is arranged at the outlet of the gas outlet pipeline 1, so that the flow channel can be further optimized, and the flow loss can be better reduced.
The acoustic performance is not influenced when the fluid performance is improved, and the theoretical calculation formula of the transmission loss of the single-chamber expansion chamber silencer is
Wherein m is expansion ratio, m is S2/S1, S2 is expansion chamber cross-sectional area, S1 is intake channel cross-sectional area, k is wave number, l is expansion chamber length. When the air suction pipeline with the taper is used, compared with a non-taper pipeline, S1 is reduced, the expansion ratio m is increased under the condition of keeping S2 unchanged, the transmission loss is increased, and the noise elimination quantity is increased in a main noise elimination frequency band; to seek a more optimal amount of sound attenuation, S2 is increased so that the expansion ratio m is further increased, with a consequent greater transmission loss. The masterThe frequency band to be silenced is
Where c is the speed of sound. The expansion ratio m is adjusted to change the volumes of the upper sound-absorbing cavity 9 and the lower sound-absorbing cavity 8 of the expansion silencer, so that the transmission loss of the suction silencer in the embodiment is improved. The experimental result shows that the noise of the whole machine can be reduced by about 1.5dB (A) by using the R290 refrigerant when using the air suction silencer with a conical air suction pipeline structure (with the same taper or taper gradient). This patent takes toper suction line structure's muffler of breathing in can improve compressor energy efficiency ratio and noise simultaneously.
Claims (10)
1. The utility model provides a take toper muffler of breathing in of pipeline structure, includes muffler box, baffle and muffler lid, be equipped with the air inlet pipeline on the muffler box, be equipped with the interpolation pipeline on the baffle, be equipped with the pipeline of giving vent to anger on the muffler lid, air inlet pipeline, interpolation pipeline and the pipeline of giving vent to anger constitute the air inlet pipeline of the muffler of breathing in, its characterized in that, the inner tube of air inlet pipeline, interpolation pipeline and the pipeline of giving vent to anger is the toper, the inner tube entry end pipe diameter of air inlet pipeline, interpolation pipeline and the pipeline of giving vent to anger is greater than the exit.
2. The suction muffler with a tapered suction line structure as set forth in claim 1, wherein the tapers of the inner tubes of the inlet line, the inner insertion line and the outlet line are 3, respectivelyo～15o。
3. The suction muffler with a tapered suction line structure as set forth in claim 1 or 2, wherein the inner tubes of the inlet line, the inner insertion line and the outlet line have the same taper.
4. A suction muffler with a tapered suction line structure as set forth in claim 3, wherein the tapers of the inner tubes of the inlet line, the inner insertion line and the outlet line are 7, respectivelyo。
5. Suction muffler with tapered suction line structure according to claim 1 or 2, characterized in that the inner pipe of the suction line has a taper of 7oThe taper of the inner pipe of the inserted pipeline is 10oThe taper of the inner pipe of the air outlet pipeline is 13o。
6. The suction muffler with a tapered suction line structure as set forth in claim 1 or 2, wherein an inlet of said inner insertion line is positioned opposite to an outlet of said inlet line, and an inlet of said outlet line is positioned opposite to an outlet of said inner insertion line.
7. The suction muffler having a tapered suction pipe structure according to claim 1 or 2, wherein the inlet and outlet ports of the inlet pipe, the inner insertion pipe and the outlet pipe have a circular or elliptical cross-sectional shape.
8. A suction muffler with a tapered suction line structure according to claim 1 or 2, wherein the inner insertion line is a straight line or an elbow line, and the elbow line has an L-shape, a U-shape or a C-shape.
9. A suction muffler with a tapered suction pipe structure as set forth in claim 1 or 2, wherein a circular arc surface flow guide structure is provided at the outlet of the outlet pipe.
10. A suction muffler with a tapered suction line structure according to claim 1 or 2, wherein the partition is horizontally or vertically disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920975136.2U CN210599316U (en) | 2019-06-26 | 2019-06-26 | Air suction silencer with conical air suction pipeline structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920975136.2U CN210599316U (en) | 2019-06-26 | 2019-06-26 | Air suction silencer with conical air suction pipeline structure |
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| CN210599316U true CN210599316U (en) | 2020-05-22 |
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| CN201920975136.2U Active CN210599316U (en) | 2019-06-26 | 2019-06-26 | Air suction silencer with conical air suction pipeline structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374841A (en) * | 2019-06-26 | 2019-10-25 | 加西贝拉压缩机有限公司 | A kind of air suction silencer with taper suction line structure |
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2019
- 2019-06-26 CN CN201920975136.2U patent/CN210599316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374841A (en) * | 2019-06-26 | 2019-10-25 | 加西贝拉压缩机有限公司 | A kind of air suction silencer with taper suction line structure |
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