CN208804000U - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- CN208804000U CN208804000U CN201821417263.2U CN201821417263U CN208804000U CN 208804000 U CN208804000 U CN 208804000U CN 201821417263 U CN201821417263 U CN 201821417263U CN 208804000 U CN208804000 U CN 208804000U
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- China
- Prior art keywords
- porous plate
- screw compressor
- partition
- compressor according
- screw
- Prior art date
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- 238000005192 partition Methods 0.000 claims description 35
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000003519 ventilatory effect Effects 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a screw compressor. This screw compressor includes exhaust bearing frame (1), and exhaust bearing frame (1) has the exhaust chamber, is provided with baffle (2) and perforated plate (3) in the exhaust chamber, and perforated plate (3) set up between the air inlet in exhaust chamber and baffle (2), and the air current flows to baffle (2) through perforated plate (3) from the air inlet. According to the utility model discloses a screw compressor can reduce the noise that screw compressor operation process produced because of the air current is too big or unstable.
Description
Technical field
The utility model belongs to Compressor Technology field, and in particular to a kind of screw compressor.
Background technique
Large size water cooler is more and more widely used in plastic cement, plating, electronics, chemical industry, pharmacy, printing, food at present
The industry such as processing, high-speed rail, subway, market, hotel and civil field, core component of the screw compressor as water cooler,
Reach product cooling capacity effect by compression refrigerant, can product quality be most important, control compressor operational process well
In noise level then directly embody that Compressor Manufacturing is horizontal, and low noise product can not only improve product quality, promote user experience,
Further embody the manufacturing capacity of company's perfection quality product.
Multiple works such as screw compressor need to freeze in such as nominal condition, low voltage difference refrigeration, High Pressure Difference refrigeration, maximum are freezed
Reliability service under condition.There are many noise sources that screw compressor generates in operation test process, and main source has
Two, one is by the uneven caused mechanical friction noise of rotor engagement, the second is since gas is discharged after compression pressurization
Moment, flow-induced vibration noise caused by air-flow is excessive or unstable, especially under High Pressure Difference operating condition, the operation of rotor is most unstable
Fixed, the vibration for generating air-flow can be more obvious.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of screw compressor, it can reduce screw rod
The noise that formula compressor operational process is generated because air-flow is excessive or unstable.
To solve the above-mentioned problems, the utility model provides a kind of screw compressor, including exhaust bearing block, exhaust shaft
Holding seat tool has discharge chamber, is provided with partition and porous plate in discharge chamber, porous plate be arranged in discharge chamber air inlet and partition it
Between, air-flow flows to partition through porous plate from air inlet.
Preferably, along air current flow direction, the distance between porous plate and partition are D, D=c/2f, and wherein c noise exists
Spread speed in medium, f are the frequency of noise.
Preferably, the distance between porous plate and partition are adjustable.
Preferably, porous plate by screw rod be arranged on partition, and by screw rod adjusting porous plate and partition between away from
From.
Preferably, the venthole on porous plate is circular hole, elliptical aperture or polygonal hole.
Preferably, venthole is circular hole, and the diameter of circular hole is 1 to 3mm.
Preferably, the sum of area of venthole is the 1% to 48% of the gross area of porous plate.
Preferably, screw compressor further includes slide valve assembly, and slide valve assembly includes piston rod, and piston rod is threaded through partition
Between porous plate, the end of piston rod is provided with piston.
Preferably, screw compressor further includes rotor assembly, and slide valve assembly and rotor assembly cooperate, and adjusts rotor assembly
Displacement.
Screw compressor provided by the utility model, including exhaust bearing block, exhaust bearing seat tool have discharge chamber, are vented
Intracavitary to be provided with partition and porous plate, porous plate is arranged between the air inlet of discharge chamber and partition, and air-flow is from air inlet through more
Orifice flow is to partition.In screw compressor operation, gaseous coolant is arranged after rotor compression from slide valve tail part exhaust mouth
Out, enter discharge chamber through exhaust outlet to contact with porous plate, after porous plate shunts partial pressure, be discharged from the venthole of porous plate
Airflow direction is constant, and after the baffle contacts of the air stream outlet direction of porous plate, air flow direction is reversed, and with subsequent by porous
The air-flow reverse phase of plate discharge is offset, and so as to play effective Noise Reduction, screw compressor operation can be effectively reduced
The noise that process is generated because air-flow is excessive or unstable.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the screw compressor of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the porous plate of the screw compressor of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the exhaust bearing block of the screw compressor of the utility model embodiment；
Fig. 4 is the side structure schematic view of the exhaust bearing block of the screw compressor of the utility model embodiment；
Fig. 5 is that the structure that the exhaust bearing block of the screw compressor of the utility model embodiment cooperates with rotor assembly is shown
It is intended to；
Fig. 6 is the exhaust bearing block of the screw compressor of the utility model embodiment and the side view knot of rotor assembly cooperation
Structure schematic diagram.
Appended drawing reference indicates are as follows:
1, it is vented bearing block；2, partition；3, porous plate；4, venthole；5, slide valve assembly；6, piston rod；7, piston；8, turn
Sub-component.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to 6, embodiment according to the present utility model, screw compressor includes exhaust bearing block
1, exhaust bearing block 1 has discharge chamber, is provided with partition 2 and porous plate 3 in discharge chamber, porous plate 3 be arranged in discharge chamber into
Between port and partition 2, air-flow flows to partition 2 through porous plate 3 from air inlet.
In screw compressor operation, gaseous coolant is discharged, through being vented after rotor compression from slide valve tail part exhaust mouth
The discharge chamber that mouth enters exhaust bearing block 1 is contacted with porous plate 3, after porous plate 3 shunts partial pressure, from the venthole of porous plate 3
The airflow direction of middle discharge is constant, and after contacting with the partition 2 of the air stream outlet direction of porous plate 3, air flow direction is reversed, and with it is rear
The continuous air-flow reverse phase being discharged by porous plate 3 is offset, and so as to play effective Noise Reduction, screw can be effectively reduced
The noise that compressor operational process is generated because air-flow is excessive or unstable.
Along air current flow direction, the distance between porous plate 3 and partition 2 are D, D=c/2f, and wherein c noise is in medium
In spread speed, f be noise frequency.According to noise interference principle, work as D=c/2f, reverse phase interference, drop can occur for noise
Low noise.Porous plate 3 is installed with screw to the discharge chamber of exhaust bearing block 1, mounting height need to be according to screw compressor
Running frequency is designed, and guarantees the air-flow returned by the air-flow of porous plate 3 and by hitting discharge chamber bottom after porous plate 3
After the two intersection, two-phase wave frequency cancellation, frequency noise reduces.
Preferably, the distance between porous plate 3 and partition 2 are adjustable.For different compressor operating frequencies, and difference
Screw compressor operating condition for, the frequency noise for needing to eliminate also can accordingly change, therefore, same porous plate
3 be the noise reduction process for being difficult to meet simultaneously a variety of different frequency noises.Due to reduce noise by porous plate 3 and partition 2 it
Between distance influence, therefore can according to need reduction noise frequency come the porous plate 3 that designs required for determining with every
Then the distance between plate 2 adjusts the installation site of porous plate 3, it can the noise reduction for bettering meet a variety of different noises is wanted
It asks, improves the anti-acoustic capability of screw compressor.
In the present embodiment, porous plate 3 is arranged on partition 2 by screw rod, and adjusts porous plate 3 and partition by screw rod
The distance between 2.Threaded hole is provided on porous plate 3, screw rod is threaded through on the threaded hole, be then rotatably arranged in every
On plate 2, porous plate 3 can be slided along the cavity wall of discharge chamber, but cannot be rotated relative to discharge chamber, therefore in rotation screw rod
When, porous plate 3 can not rotate together with screw rod, the rotary motion of screw rod can be converted to the linear motion of porous plate 3, thus
Easily the installation site of porous plate 3 is adjusted.Porous plate 3 can also be adjusted by other means between partition 2
Relative position, such as gas bar etc..
Venthole 4 on porous plate 3 is circular hole, elliptical aperture or polygonal hole.
Preferably, venthole 4 is circular hole, and the diameter of circular hole is 1 to 3mm.
Acoustic resistance Z=8 η t/a2+4j ω ρ t/4, η are the coefficient of viscosity in cold media gas, and a is aperture, and t is thickness, and ρ is cold
Medium gas volume density, j are unit vector, ω is angular frequency, by acoustic resistance formula it is found that acoustic resistance and caliber square are inversely proportional in round tube
Relationship, when caliber is small to a certain extent, acoustic resistance can reach the degree effectively absorbed；According to the principle, in screw-compression
Under the specific noise of machine operation, setting hole away from aperture, aperture can be reduced when needing big acoustic resistance.Due to screw compressor
Exhaust to first pass through porous plate 3, can be discharged from exhaust pipe, therefore the pore size of porous plate 3 influences whether capacity
Number, when 4 aperture of venthole on porous plate 3 is too small, it is less to will lead to the amount that gaseous coolant passes through from porous plate 3, nothing
Method meets work requirements, it is therefore desirable to balance the relationship between the ventilatory capacity and noise reduction of porous plate 3.By by the diameter of circular hole
Be limited to above-mentioned numerical value, can the relationship of active balance between the two, can on the basis of obtaining obvious noise reduction effect, protect
It demonstrate,proves gaseous coolant smoothly to pass through from porous plate 3, guarantees the working performance of screw compressor.
Preferably, the sum of area of venthole 4 is the 1% to 48% of the gross area of porous plate 3.
Screw compressor further includes slide valve assembly 5, and slide valve assembly 5 includes piston rod 6, and piston rod 6 is threaded through 2 He of partition
Between porous plate 3, the end of piston rod 6 is provided with piston 7.It is provided with through-hole on partition 2, guarantees that piston 7 can control cunning
It is dynamic, the spool position in adjustable slide valve assembly 5.
When the exhaust of helical-lobe compressor reaches partition 2 by porous plate 3, part gaseous coolant can be by partition 2
Through-hole reaches piston 7, then reverse flow under the action of piston 7, supports with the gas reverse phase flowed into from the through-hole on partition 2
Disappear, to form secondary noise reduction, noise can be further decreased.
Screw compressor further includes rotor assembly 8, and slide valve assembly 5 and rotor assembly 8 cooperate, and adjusts rotor assembly 8
Displacement.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (9)
1. a kind of screw compressor, which is characterized in that including being vented bearing block (1), the exhaust bearing block (1) has exhaust
Chamber is provided with partition (2) and porous plate (3) in the discharge chamber, and the air inlet of the discharge chamber is arranged in the porous plate (3)
Between the partition (2), air-flow flows to the partition (2) through the porous plate (3) from air inlet.
2. screw compressor according to claim 1, which is characterized in that along air current flow direction, the porous plate
It (3) is D, D=c/2f with the distance between the partition (2), wherein the spread speed of c noise in the medium, f are the frequency of noise
Rate.
3. screw compressor according to claim 2, which is characterized in that the porous plate (3) and the partition (2) it
Between distance it is adjustable.
4. screw compressor according to claim 3, which is characterized in that the porous plate (3) is arranged by screw rod
On the partition (2), and the distance between described porous plate (3) and the partition (2) are adjusted by the screw rod.
5. screw compressor according to claim 1, which is characterized in that the venthole (4) on the porous plate (3) is
Circular hole, elliptical aperture or polygonal hole.
6. screw compressor according to claim 5, which is characterized in that the venthole (4) is circular hole, the circular hole
Diameter be 1 to 3mm.
7. screw compressor according to claim 5, which is characterized in that the sum of area of the venthole (4) is institute
State the 1% to 48% of the gross area of porous plate (3).
8. screw compressor according to claim 1, which is characterized in that the screw compressor further includes slide valve group
Part (5), the slide valve assembly (5) include piston rod (6), and the piston rod (6) is threaded through the partition (2) and the porous plate
(3) between, the end of the piston rod (6) is provided with piston (7).
9. screw compressor according to claim 8, which is characterized in that the screw compressor further includes rotor set
Part (8), the slide valve assembly (5) and the rotor assembly (8) cooperate, and adjust the displacement of the rotor assembly (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821417263.2U CN208804000U (en) | 2018-08-30 | 2018-08-30 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821417263.2U CN208804000U (en) | 2018-08-30 | 2018-08-30 | Screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208804000U true CN208804000U (en) | 2019-04-30 |
Family
ID=66235864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821417263.2U Active CN208804000U (en) | 2018-08-30 | 2018-08-30 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208804000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162920A (en) * | 2018-08-30 | 2019-01-08 | 珠海格力电器股份有限公司 | Screw compressor |
-
2018
- 2018-08-30 CN CN201821417263.2U patent/CN208804000U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162920A (en) * | 2018-08-30 | 2019-01-08 | 珠海格力电器股份有限公司 | Screw compressor |
| CN109162920B (en) * | 2018-08-30 | 2024-07-02 | 珠海格力电器股份有限公司 | Screw compressor |
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