CN208431166U - A kind of muffler of compression mechanism cool equipment - Google Patents
A kind of muffler of compression mechanism cool equipment Download PDFInfo
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- CN208431166U CN208431166U CN201820957152.4U CN201820957152U CN208431166U CN 208431166 U CN208431166 U CN 208431166U CN 201820957152 U CN201820957152 U CN 201820957152U CN 208431166 U CN208431166 U CN 208431166U
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- expansion chambers
- muffler
- compression mechanism
- length
- cool equipment
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Abstract
The utility model proposes a kind of mufflers of compression mechanism cool equipment, the muffler is mounted on screw compressor exhaust pipe, its structure includes former and later two expansion chambers cavitys of cylinder, front head, rear head, intermediate bulkhead composition, and the composition such as air inlet tube, middle adapter, outgoing gas connection tube, the utility model muffler is according to resistant noise-reducing device principle, expansion chamber size and connecting pipe length pass through scientific algorithm, have the characteristics that processing and manufacturing is simple, at low cost, there is apparent effect to screw compressor exhaust side low frequency noise is reduced.
Description
Technical field
The utility model relates to a kind of mufflers of compression mechanism cool equipment, are used for its noise reduction process, are suitable for as large-scale
The equipment such as refrigeration equipment, air compressor.
Background technique
With the development of the social economy, requirement of the people to environment is higher and higher, such as air, water resource, wherein to making an uproar
On the one hand the requirement of acoustic environment is also.Work as currently, all kinds of Large Central Air Conditioning System refrigeration equipments are widely used in the various buildings in city
In, the noise that equipment generates is more and more to become the object complained, and noise source is typically from screw compressor.In addition,
Air compressor is also that can also generate very big noise, but it is generally used for industrial area using screw compressor, so throwing
It tells few.
The noise that screw compressor issues is usually Middle and low frequency noise, strong with penetration power, be not easy to decay, to the popular feeling
The characteristics of reason and physiology are also easy to produce damage.General device manufacturer is one sound attenuator of packaging on the outside of compressor, patch in sound attenuator
Waveform silencing cotton, such silencing means have noise reduction effect to high-frequency noise, but to low frequency noise without positive effect, so practical
Discovery is without obvious effect after use；Another noise reduction mode is to install a resistant noise-reducing device in compressor exhaust pipe, is passed through
Noise elimination, such design, which are suitable for reducing Middle and low frequency noise, to be achieved the purpose that the unexpected expansion and diminution of gas passage.But industry
The interior resistant noise-reducing device used that designs only has an expansion chambers, and design comparison is simple, lacks setting in detail to noise Principles of Acoustics
Meter calculates, and the frequency noise that can be zero there are many sound deadening capacity passes through, and causes noise reduction effect unobvious.Utility model patent
CN206770156 discloses a kind of good resistant noise-reducing device design, does not have the frequency that sound deadening capacity is zero and passes through, and combines
The principle that aperture is eliminated the noise.But the screw compressor very big to capacity is bound to open up many apertures, increases difficult processing
Degree, and it is short of the considerations of accumulating to refrigeration lubrication oil.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of equipment uses suitable for using screw compressor
Resistant noise-reducing device, which is mounted on screw compressor exhaust pipe, according to reactive muffling principle, cancels aperture and eliminates the noise
Design.
The silencing means of a kind of screw compressor refrigeration equipment provided by the utility model, wherein described device includes
Cylinder, front head, rear head, intermediate bulkhead, air inlet tube, middle adapter and outgoing gas connection tube, the front head, cylinder and rear envelope
Head forms a closed chamber, and the intermediate bulkhead is equipped in the chamber by the chamber and is divided into preceding expansion chambers and rear expansion
Room, the front head are equipped with air inlet tube, be connected to compressor exhaust outlet and the preceding expansion chambers, set on the intermediate bulkhead
There is middle adapter, be connected to the preceding expansion chambers and the rear expansion chambers, the rear head is equipped with outgoing gas connection tube, expands after connection is described
It opens room and silencing means is extraneous.
Further, the preceding expansion chambers are identical with the diameter of rear expansion chambers, and the cylinder is cylinder, the preceding expansion chambers
Length L1: the length L of expansion chambers after described2It is 7:13 fixed proportion than range, deviates ratio, have the frequency that sound deadening capacity is zero
Rate passes through.
Further, the length that the preceding expansion chambers are stretched in the air inlet tube is L1/ 2, preceding expansion is stretched in middle adapter
The length of room is L1/4；It is L that the rear indoor length of expansion is stretched in the middle adapter2/ 2, it stretches in the outgoing gas connection tube
The length of expansion chambers is L after described2/4。
Further, the preceding expansion chambers are identical with the diameter of rear expansion chambers, the air inlet tube, the middle adapter and institute
The diameter for stating outgoing gas connection tube is identical, and the sectional area of the cylinder sectional area and the air inlet tube is divergence ratio, expands ratio model
Enclose 1~20；Wherein preferably 5~15, ratio more large noise elimination quantity is bigger, but exceeds 15, and noise elimination edge effect reduces；Ratio is got over simultaneously
Greatly, barrel diameter becomes larger, and cost and space occupied increase.
Further, the intermediate bulkhead edge side opens up technical gaps, and the technical gaps are preferably triangle or circle,
Area is 2 ‰~the 5 ‰ of cylinder sectional area, before preventing lubricating oil from lodging in expansion chambers.
Further, the outgoing gas connection tube is equipped with technical gaps, and hole diameter 5~φ of preferred hole diameter φ 15mm is excellent
It selects close to rear head (sealing plate) side, prevents lubricating oil from lodging in rear expansion chambers.
Compared with existing patented technology, this patent is had the advantage that
1. structure is simple, materials are simple, the processing is simple, easy to assembly, while noise elimination effect is excellent, and not having sound deadening capacity is
Zero frequency passes through；
2. refrigeration lubrication oil prevents lubricating oil to exist with refrigerant circulation, the art of this patent for screw compressor
The accumulation of silencer cavity ensure that the safe operation of compressor.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram in the vertical section of the utility model embodiment 1；
Fig. 2 shows the structural schematic diagrams in the cross section of the utility model embodiment 1.
Attached drawing mark
1-6-middle adapter of front head 2-cylinder, 3-intermediate bulkhead, 4-rear head, 5-air inlet tube 7-goes out
Gas adapter tube 8-preceding expansion chambers 9-rear expansion chambers 10-oil stream, 11-oil stream of through-hole leads to notch
L1The length L of-preceding expansion chambers2The length L of-rear expansion chambers11The length of expansion chambers before being stretched in-air inlet tube
Spend L12The length L of expansion chambers before being stretched in-middle adapter21The length L of rear expansion chambers is stretched in-middle adapter22- go out
The length of rear expansion chambers is stretched in gas adapter tube
Specific embodiment
The embodiments of the present invention are described with detailed reference to attached drawing now.In the case of any possible, all attached
In figure the same or similar part will be indicated using identical label.
Embodiment 1
Fig. 1 shows the structural schematic diagram in the vertical section of one embodiment of the utility model.It is practical new that Fig. 2 shows this
The structural schematic diagram in the cross section of one embodiment of type.
A kind of embodiment of this patent as shown in Figure 1 and Figure 2: being from left to right gas circulating direction, intermediate bulkhead 3 welds
It is connected in cylindrical tube 2, and cylinder 2 is divided into the two parts of anterior-posterior length not etc., and respectively at front head 1 and rear head 4
Preceding expansion chambers 8 and rear expansion chambers 9 are formed, the length of preceding expansion chambers 8 is L1, the length of rear expansion chambers 9 is L2, L1Greater than L2And it is in
Fixed proportion relationship.L1Length determine the maximum pitch frequency of sound deadening capacity, L1Value is bigger, and pitch frequency is smaller, noise elimination frequency band
It is wider.Conversely, if obtaining noise spectrum in advance, it is known that the relatively high pitch frequency of noise can be set for this frequency
Count L1Length.The length L of expansion chambers 9 afterwards2It must be with length L1In fixed proportion relationship, the purpose is to eliminate the noise to preceding expansion chambers 8
The frequency that amount is zero carries out noise elimination processing.
Air inlet tube 5, middle adapter 6,7 diameter specifications d of outgoing gas connection tube are identical as compressor exhaust pipe, cylinder 2 with
The ratio between sectional area of adapter tube, referred to as divergence ratio, divergence ratio is bigger, and sound deadening capacity is bigger, expands ratio range 1~20；Wherein preferably 5
~15.It is required according to sound deadening capacity, in conjunction with factors such as installation space, costs, it may be determined that barrel diameter D specification.
The length L of expansion chambers 8 before being stretched in air inlet tube 511For L1/ 2, the length of expansion chambers 8 before stretching in middle adapter 6
L12For L1/ 4, the length L of rear expansion chambers 9 is stretched in middle adapter 621For L2/ 2, the length of rear expansion chambers 9 is stretched in outgoing gas connection tube 7
Spend L22For L2/ 4, these inward nozzles can eliminate the odd-multiple of half wavelength respectively and even-multiple is corresponding passes through frequency.
The L1/L2Length ratio be 7:13.
In addition, refrigeration equipment screw compressor contains a large amount of refrigeration lubrication oil, followed in systems together with refrigerant
Ring.When muffler expansion is bigger, it is compressor safety that muffler, which can generate the effect of oil separation and lodge in muffler,
Operation brings risk.So intermediate bulkhead 3 edge side open up oil stream lead to notch 11, area be cylinder sectional area 2 ‰~
5 ‰, oil stream through-hole 10 is opened up close to the position of rear head 4 in outgoing gas connection tube 7, hole diameter φ 5~φ 15mm makes in muffler
The lubricating oil isolated can flow out muffler with discharge refrigerant.
Those skilled in the art can be obvious, can the above exemplary embodiments of the utility model be carry out various modifications and be become
Spirit and scope of the type without departing from the utility model.Accordingly, it is intended to which the utility model covering is made to fall in the appended claims
And its modifications and variations to the utility model within the scope of equivalent arrangements.
Claims (8)
1. a kind of muffler of compression mechanism cool equipment, which is characterized in that the muffler include cylinder, front head, rear head,
Intermediate bulkhead, air inlet tube, middle adapter and outgoing gas connection tube, the front head, cylinder and rear head form a closed chamber
Room is equipped with the intermediate bulkhead in the chamber for the chamber and is divided into preceding expansion chambers and rear expansion chambers, sets on the front head
There is air inlet tube, the exhaust outlet and the preceding expansion chambers, the intermediate bulkhead for being connected to compressor are equipped with middle adapter, are connected to institute
Expansion chambers and the rear expansion chambers, the rear head are equipped with outgoing gas connection tube before stating, and are connected to outside the rear expansion chambers and silencing means
Boundary.
2. a kind of muffler of compression mechanism cool equipment according to claim 1, which is characterized in that the preceding expansion chambers and
The diameter of expansion chambers is identical afterwards, and the cylinder is cylinder, the length L of the preceding expansion chambers1；The length L of expansion chambers after described2,
L1/L2Length is in 7:13 fixed proportion.
3. a kind of muffler of compression mechanism cool equipment according to claim 2, which is characterized in that in the air inlet tube
The length for stretching the preceding expansion chambers is L1/ 2, the length of expansion chambers is L before stretching in middle adapter1/4；It is stretched in the middle adapter
The indoor length of expansion is L after described2/ 2, stretch in the outgoing gas connection tube it is described after the length of expansion chambers be L2/4。
4. a kind of muffler of compression mechanism cool equipment according to claim 1, which is characterized in that the preceding expansion chambers and
The diameter of expansion chambers is identical afterwards, and the air inlet tube, the middle adapter are identical with the diameter of the outgoing gas connection tube, the cylinder
The sectional area of sectional area and the air inlet tube is divergence ratio, expands ratio range 1~20.
5. a kind of muffler of compression mechanism cool equipment according to claim 4, which is characterized in that the expansion ratio model
Enclose 5~15.
6. a kind of muffler of compression mechanism cool equipment according to claim 1, which is characterized in that the intermediate bulkhead side
Edge side opens up technical gaps.
7. a kind of muffler of compression mechanism cool equipment according to claim 6, which is characterized in that the technical gaps are
Triangle or circle, area are 2 ‰~the 5 ‰ of cylinder sectional area.
8. a kind of muffler of compression mechanism cool equipment according to claim 1, which is characterized in that on the outgoing gas connection tube
Technique aperture, hole diameter 5~φ of φ 15mm are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820957152.4U CN208431166U (en) | 2018-06-21 | 2018-06-21 | A kind of muffler of compression mechanism cool equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820957152.4U CN208431166U (en) | 2018-06-21 | 2018-06-21 | A kind of muffler of compression mechanism cool equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431166U true CN208431166U (en) | 2019-01-25 |
Family
ID=65101151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820957152.4U Active CN208431166U (en) | 2018-06-21 | 2018-06-21 | A kind of muffler of compression mechanism cool equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN208431166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883062A (en) * | 2021-09-18 | 2022-01-04 | 中国船舶重工集团公司第七一一研究所 | Silencing absorber for screw compressor |
-
2018
- 2018-06-21 CN CN201820957152.4U patent/CN208431166U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883062A (en) * | 2021-09-18 | 2022-01-04 | 中国船舶重工集团公司第七一一研究所 | Silencing absorber for screw compressor |
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