CN204806634U - Vehicle air conditioner low pressure muffler for pipeline - Google Patents
Vehicle air conditioner low pressure muffler for pipeline Download PDFInfo
- Publication number
- CN204806634U CN204806634U CN201520517930.4U CN201520517930U CN204806634U CN 204806634 U CN204806634 U CN 204806634U CN 201520517930 U CN201520517930 U CN 201520517930U CN 204806634 U CN204806634 U CN 204806634U
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- CN
- China
- Prior art keywords
- muffler body
- muffler
- escape pipe
- low pressure
- pressure line
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- 238000004378 air conditioning Methods 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 description 15
- 230000010349 pulsation Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model relates to a vehicle air conditioner low pressure muffler for pipeline, including muffler body (1), outlet duct (2) and compressor intercommunication are passed through to muffler body (1) one end, and muffler body (1) other end passes through intake pipe (3) and holds intercommunication, outlet duct (2) and intake pipe (3) the two decentraction with the expansion valve of air conditioner, the diameter of outlet duct (2) and the diameter of intake pipe (3) all are less than the radial dimension of muffler body (1), muffler body (1) is the cavity structures of cylinder type, and the one end of muffler body (1) is planar structure, is provided with decentered second mounting hole (13) on this terminal surface with installation intake pipe (3), the other end of muffler body (1) is convex structure (11), is provided with first mounting hole (12) on convex structure (11) with installation outlet duct (2), the length that inserted in muffler body (1) cavity outlet duct (2) is the half the of muffler body (1) inner chamber length.
Description
Technical field
The utility model belongs to automotive air-conditioning system technical field, is specifically related to a kind of air conditioning for automobiles low pressure line muffler.
Background technology
Along with development and the progress of automobile market, user proposes more and more higher requirement for automobile ride comfort.The performance of car load NVH pay close attention to by increasing user, for meeting the demand that comfortableness is driven, require auto parts and components must consider how to reduce the noise problem produced in car running process when designing, the car noise problem after wherein turning on the aircondition can by the directly perceived and strong perception of client.In the prior art, there is the abnormal sound that sound is larger in idling after turning on the aircondition, to the very uncomfortable sensation of occupant, when engine speed rises to 1500-3500rpm, abnormal sound increases the weight of, and allows occupant feel irritated.Find in test process, driver left ear place abnormal sound frequency is 900-1200Hz, further investigates discovery by pasting the mode of vibration acceleration sensor, the abnormal vibrations on the low-voltage tube near compressor place and this abnormal sound frequency range very identical.Again by filtering playback, turn on the aircondition after this frequency band is filtered and just there is no this abnormal sound, judge that this frequency range is abnormal sound frequency range.Tentatively be judged as that compressor air suction is pulsed the low-voltage tube abnormal vibrations caused and the abnormal sound produced by noise source analytic approach.In addition, the coupling due to air-conditioning system is complicated and difficulty is large, and the low-pressure side pulsation problem of compressor of air conditioner or the bad air-conditioning system caused of system matches, the effective mode of less expensive increases muffler to improve exactly on air-conditioning low pressure line.
Summary of the invention
The utility model devises a kind of air conditioning for automobiles low pressure line muffler, which solve pulsing the problem of the low-voltage tube abnormal vibrations that causes and abnormal sound due to compressor air suction of occurring in prior art, reduce or eliminate in compressor air suction process the uneven pulsation produced, thus eliminate the vibration of low-voltage tube place compared with large amplitude, to reach the more comfortable noise impression of turning on the aircondition of indoor occupant.
In order to solve the technical problem of above-mentioned existence, the utility model have employed following scheme:
A kind of air conditioning for automobiles low pressure line muffler, comprise muffler body (1), muffler body (1) one end is communicated with compressor by escape pipe (2), muffler body (1) other end is communicated with the expansion valve end of air-conditioning by air inlet pipe (3), it is characterized in that: one end that escape pipe (2) is connected with muffler body (1) is inserted in muffler body (1) cavity, escape pipe (2) and the two decentraction of air inlet pipe (3); The diameter of escape pipe (2) and the diameter of air inlet pipe (3) are all less than the radial dimension of muffler body (1).
Further, the cavity body structure that muffler body (1) is column type, one end of muffler body (1) is planar structure, this end face is provided with eccentric the second installing hole (13) to be installed into tracheae (3); The other end of muffler body (1) is boss structure (11), boss structure (11) is provided with the first installing hole (12) to install escape pipe (2).
Further, escape pipe (2) inserts the half that the length in muffler body (1) cavity is this muffler body (1) cavity length.
Further, escape pipe (2) inserts port of export processing porose (21) of the part in muffler body (1) cavity.
Further, the diameter of hole (21) is 3mm.
Further, one end end face wall thickness that muffler body (1) is connected with air inlet pipe (3) is 7mm, one end end face wall thickness that muffler body (1) is connected with escape pipe (2) is 3mm, and the thickness of boss structure (11) is 6mm, and the chamber wall thickness of the circumferential section of muffler body (1) is 2mm.
Further, muffler body (1) radial boundary is of a size of 55mm, axial boundary is of a size of 50mm, and the length of radial inner chamber is 48mm, and axial bore length is 46mm; The length that escape pipe (2) inserts in muffler body (1) cavity is 24mm.
Further, escape pipe (2) and air inlet pipe (3) are all straight pipes, and escape pipe (2) is identical with the diameter of air inlet pipe (3).
This air conditioning for automobiles low pressure line muffler has following beneficial effect:
(1) the utility model, due to both escape pipe and air inlet pipe decentraction, air-flow decentraction when this air conditioning for automobiles low pressure line passes in and out with muffler of refrigerant gas, and muffler body and the sudden change of import and export pipeline sectional area cause acoustic reactance to change, make a part along the acoustic reflection of pipe transmmision, simultaneously by the change of chamber and inner connecting tube road length, make to produce phase difference between the sound wave of forward direction from the back wave on different tube section, mutual interference, thus the object reaching noise elimination.
(2) the utility model structure simple, with low cost, be easy to application and promote, result of use is good.
Accompanying drawing explanation
Fig. 1: the front view of the utility model air conditioning for automobiles low pressure line muffler;
The A-A sectional view of Fig. 2: Fig. 1;
Fig. 3: the right view of the utility model air conditioning for automobiles low pressure line muffler;
Fig. 4: the left view of the utility model air conditioning for automobiles low pressure line muffler;
Fig. 5: the structural representation of muffler body in the utility model;
Fig. 6: the perspective view of the utility model air conditioning for automobiles low pressure line muffler.
Description of reference numerals:
1-muffler body; 11-boss structure; 12-the first installing hole; 13-the second installing hole; 2-escape pipe; 21-hole; 3-air inlet pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 to Fig. 6 shows a kind of air conditioning for automobiles low pressure line muffler, comprises muffler body 1, and muffler body 1 one end is communicated with compressor by escape pipe 2, and muffler body 1 other end is communicated with the expansion valve end of air-conditioning by air inlet pipe 3.Muffler body 1 is the expansion cavity of column type, and the diameter of muffler body 1 is greater than the diameter of escape pipe 2 and air inlet pipe 3.One end of muffler body 1 is planar structure, and the wall thickness of this end face is 7mm, this end face is provided with the second eccentric installing hole 13 and is connected with the expansion valve end of air-conditioning to be installed into tracheae 3; The other end end face of muffler body 1 is provided with boss structure 11, the wall thickness of this end face is 3mm, the thickness of boss structure 11 is 6mm, boss structure 11 is provided with the first installing hole 12 to be connected with compressor to install escape pipe 2, escape pipe 2 is fixed on the boss side on muffler body 1 by welding manner, escape pipe 2 length inserted in muffler body 1 cavity is 24mm, is the half of this muffler body 1 inner chamber physical length.The thickness of boss structure 11 can increase the intensity of muffler body 1 and escape pipe 2 junction, avoids tearing.Because escape pipe 2 inserts muffler body 1 cavity portion near compressor end, can make refrigerant gas (containing compressor and freeze oil) by time be obstructed, in order to avoid compressor, because adding muffler, oil return is not smooth, the gas outlet end of the part inserted in muffler body 1 cavity at escape pipe 2 is processed with the hole 21 that a diameter is 3mm, comes back in compressor for the compressor and freeze oil be obstructed herein.The chamber wall thickness of the circumferential section of muffler body 1 is 2mm.The first installing hole 12 and the second installing hole 13 that the two ends of muffler body 1 have, the two disalignment, first installing hole 12 with at muffler body 1 coaxial line, the second installing hole 13 eccentric setting of side in addition, is as the criterion with the edge near muffler body 1 end face that technique can realize.Escape pipe 2 and air inlet pipe 3 are all straight pipes, and caliber keeps basically identical.
Muffler body 1 radial boundary is of a size of 55mm, axial boundary is of a size of 50mm, and the length of radial inner chamber is 48mm, and axial bore length is 46mm.
The principle of this air conditioning for automobiles low pressure line muffler is: the air-flow of refrigerant gas enters muffler body 1 from expansion valve end through air inlet pipe 3, after expanding the muffler body 1 of cavate, roundabout reflection in the cavity that caliber becomes suddenly large, again because the first installing hole 12 and the second installing hole 13 two hole decentraction, also be escape pipe 2 axis different from air inlet pipe 3, further increase reflecting barrier wall, then enter escape pipe 2, and enter into compressor by escape pipe 2 outflow.Refrigerant gas stream enters again escape pipe 2 after entering into muffler body 1 by the air inlet pipe 3 of expansion valve end, suddenly the pipeline changed through this cross section and the impedance mismatching of the pipe-line system formed, thus the acoustic wave segment in making to advance forward produces reflection, and some sound wave creates interference in addition, in addition due to the bias structure of escape pipe 2 and air inlet pipe 3, make again sound wave roundabout in the cavity of muffler under the effect of reflecting wall, further enhance the effect of reflection, thus reach the effect consuming pulsation, pulsation reduces, abnormal vibration also reduces a lot, thus more comfortable noise is experienced to have made the passenger of crew module have after turning on the aircondition.
The utility model is expansion and impedance composite muffler, and this silencer cushions pulsation with the form of reflection, interference, reduces amplitude, thus alleviates pulsations.
The utility model cold-producing medium from evaporimeter out, before entering compressor, be introduced into this muffler body expansion cavity, the insertion pipeline then passed through in muffler flows out, and acoustic energy is reflected, produce phase difference suppresses to offset mutually, thus pulsation is weakened, reach the object reducing vibration and noise.
After with the addition of above-described muffler, the idling of this car of subjective assessment and raising speed (1000-3500rpm) abnormal sound of turning on the aircondition is not obvious, and whole structure can accept.After carried out again objective data acquisition, drawn by the test result analysis split with do not turn on the aircondition, arbitrarily downgrade at the Abnormal Sound of this frequency range after adding this muffler and obviously reduce.Therefore the turn on the aircondition pulsation abnormal sound of the above muffler to 900-1200Hz has comparatively effective eliminating effect.
By reference to the accompanying drawings exemplary description is carried out to the utility model above; obvious realization of the present utility model is not subject to the restrictions described above; as long as have employed the various improvement that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all in protection domain of the present utility model without to improve.
Claims (9)
1. an air conditioning for automobiles low pressure line muffler, comprise muffler body (1), muffler body (1) one end is communicated with compressor by escape pipe (2), muffler body (1) other end is communicated with the expansion valve end of air-conditioning by air inlet pipe (3), it is characterized in that: one end that escape pipe (2) is connected with muffler body (1) is inserted in muffler body (1) cavity; Escape pipe (2) and the two decentraction of air inlet pipe (3), the diameter of escape pipe (2) and the diameter of air inlet pipe (3) are all less than the radial dimension of muffler body (1).
2. air conditioning for automobiles low pressure line muffler according to claim 1, it is characterized in that: the cavity body structure that muffler body (1) is column type, one end of muffler body (1) is planar structure, this end face is provided with eccentric the second installing hole (13) to be installed into tracheae (3); The other end of muffler body (1) is boss structure (11), boss structure (11) is provided with the first installing hole (12) to install escape pipe (2).
3. air conditioning for automobiles low pressure line muffler according to claim 1 and 2, is characterized in that: escape pipe (2) length inserted in muffler body (1) cavity is the half of this muffler body (1) cavity length.
4. air conditioning for automobiles low pressure line muffler according to claim 1 and 2, is characterized in that: escape pipe (2) inserts port of export processing porose (21) of the part in muffler body (1) cavity.
5. air conditioning for automobiles low pressure line muffler according to claim 4, is characterized in that: the diameter of hole (21) is 3mm.
6. the air conditioning for automobiles low pressure line muffler according to claim 2 or 5, it is characterized in that: one end end face wall thickness that muffler body (1) is connected with air inlet pipe (3) is 7mm, one end end face wall thickness that muffler body (1) is connected with escape pipe (2) is 3mm, the thickness of boss structure (11) is 6mm, and the chamber wall thickness of the circumferential section of muffler body (1) is 2mm.
7. air conditioning for automobiles low pressure line muffler according to claim 6, is characterized in that: muffler body (1) radial boundary is of a size of 55mm, axial boundary is of a size of 50mm, the length of radial inner chamber is 48mm, and axial bore length is 46mm; The length that escape pipe (2) inserts in muffler body (1) cavity is 24mm.
8. the air conditioning for automobiles low pressure line muffler according to claim 1,2 or 5, it is characterized in that: muffler body (1) radial boundary is of a size of 55mm, axial boundary is of a size of 50mm, the length of radial inner chamber is 48mm, and axial bore length is 46mm; The length that escape pipe (2) inserts in muffler body (1) cavity is 24mm.
9. the air conditioning for automobiles low pressure line muffler according to claim 1,2,5 or 7, is characterized in that: escape pipe (2) and air inlet pipe (3) are all straight pipes, and escape pipe (2) is identical with the diameter of air inlet pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520517930.4U CN204806634U (en) | 2015-07-16 | 2015-07-16 | Vehicle air conditioner low pressure muffler for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520517930.4U CN204806634U (en) | 2015-07-16 | 2015-07-16 | Vehicle air conditioner low pressure muffler for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204806634U true CN204806634U (en) | 2015-11-25 |
Family
ID=54591450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520517930.4U Active CN204806634U (en) | 2015-07-16 | 2015-07-16 | Vehicle air conditioner low pressure muffler for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204806634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116601A (en) * | 2018-02-06 | 2019-08-13 | 上海汽车集团股份有限公司 | A kind of air-conditioning duct silencer |
-
2015
- 2015-07-16 CN CN201520517930.4U patent/CN204806634U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116601A (en) * | 2018-02-06 | 2019-08-13 | 上海汽车集团股份有限公司 | A kind of air-conditioning duct silencer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |