CN208718892U - A kind of cylinder cap and air compressor of air compressor - Google Patents

Abstract

The utility model discloses a kind of cylinder caps of air compressor, belong to air compressor field, cylinder cap is equipped with inlet chamber and discharge chamber, the discharge chamber is connected with exhaust outlet, it is equipped in the discharge chamber and deflector is installed, discharge chamber is separated into upper exhaust passage and lower exhaust passage by the deflector, intermediate flow through-hole is communicated between the upper exhaust passage and lower exhaust passage, exhaust outlet is connected to the upper exhaust passage, compressed air enters from lower exhaust passage, enters after upper exhaust passage after intermediate flow through-hole and is discharged from exhaust outlet.In addition, the invention also discloses a kind of air compressors using above-mentioned cylinder cap.The utility model has the advantage of the exhaust noises that can effectively reduce air compressor.

Description

A kind of cylinder cap and air compressor of air compressor

[technical field]

The utility model relates to a kind of cylinder caps of air compressor, belong to air compressor field.

[background technique]

Air compressor, especially electric compressor, are widely used in every field, such as electric car field, Since electric car is without this noise source of engine, in such a case, electric compressor generated noise when working Just than more prominent.

Electric compressor noise mainly has air power noise, mechanical noise and electromagnetic noise, air power noise It is the main sound source of air compressor machine noise, is that air compressor machine is generated in air inlet, exhaust.Air compressor air intake noise is by air-filtering What device and intake muffler reduced, and the reduction of exhaust noise is the class mainly studied in all electric compressor manufacturers Topic.

[utility model content]

A kind of air compression is provided the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art The cylinder cap of machine can effectively reduce the exhaust noise of air compressor.

Above-mentioned technical problem is solved, the utility model adopts the following technical solution:

A kind of cylinder cap of air compressor, cylinder cap are equipped with inlet chamber and discharge chamber, and the discharge chamber is connected with exhaust outlet, It being equipped in the discharge chamber and deflector is installed, discharge chamber is separated into upper exhaust passage and lower exhaust passage by the deflector, Intermediate flow through-hole is communicated between the upper exhaust passage and lower exhaust passage, exhaust outlet is connected to the upper exhaust passage, pressure Contracting air enters from lower exhaust passage, enters after upper exhaust passage after intermediate flow through-hole and is discharged from exhaust outlet.

Using the utility model has the beneficial effects that

In the utility model, discharge chamber is separated into upper exhaust passage and lower exhaust passage, while upper exhaust with deflector It is connected between channel and lower exhaust passage with intermediate flow through-hole, such design substantially extends the flowing road of compressed air Diameter, traditional cylinder head for air compressor, compressed air, which enters after discharge chamber, to be directly discharged from exhaust outlet, and is pressed in the utility model Contracting air needs to be introduced into lower exhaust passage, then enters back into upper exhaust passage by intermediate flow through-hole, finally arranges from exhaust outlet Out, under the premise of identical exhaust cavity volume, circulation path is obviously increased, while not increasing the own vol of cylinder cap also.And And if the position of intermediate flow through-hole be arranged it is more reasonable, such as setting arrive end position, be equivalent to the circulation of compressed air Path increases one times fully.

After extending the flow path of compressed air, reflex of the sound wave in discharge chamber can become more, thus the energy of sound wave Amount consumption is bigger, so that noise reduction effect becomes apparent from when exhaust, in addition, deflector is arranged in the utility model, is equivalent to entire The air-flow of discharge chamber is also oriented to, so that the air-flow in discharge chamber is more unified, uniform, not only can further be added Strong noise reduction effect, while exhaust can also be allowed more smooth.

Preferably, the discharge chamber and/or inlet chamber are in thin-and-long channel.

Preferably, the middle flow hole is located at the end position of discharge chamber.

Preferably, being equipped with flow-interfering bar, the length side of the flow-interfering bar in the upper exhaust passage and/or lower exhaust passage Intersect to airflow direction.

Preferably, the inner wall of the discharge chamber is equipped with positioning step, the deflector is mounted on positioning step.

Preferably, the discharge chamber includes normal exhaust section, and include at least a discharge chamber necking section, the exhaust The cross-sectional area of chamber necking section is less than the cross-sectional area of normal exhaust section.

Preferably, the cylinder cap is equipped with the through-hole of multiple fastenings, the cylinder cap forms institute in an at least through hole State discharge chamber necking section.

Preferably, the discharge chamber further includes an at least discharge chamber flared section, the cross section of the discharge chamber flared section Area is greater than the cross-sectional area of normal exhaust section.

Preferably, the inlet chamber includes normal air inlet section, and include at least an inlet chamber necking section, the air inlet The cross-sectional area of chamber necking section is less than the cross-sectional area of normal air inlet section；And/or the inlet chamber includes normal air inlet Section, the inlet chamber further include an at least inlet chamber flared section, the cross-sectional area of the inlet chamber flared section be greater than normally into The cross-sectional area of gas section.

In addition, the invention also discloses a kind of air compressor, including body and cylinder cap, cylinder cap is using above-mentioned any A kind of cylinder cap in scheme.

These features and advantages of the utility model will the detailed exposure in following specific embodiment, attached drawing.

[Detailed description of the invention]

The utility model is described further with reference to the accompanying drawing:

Fig. 1 is the overall structure diagram of air compressor；

Fig. 2 is the perspective view of the explosion of air compressor；

Fig. 3 is the structural schematic diagram of the upper cylinder cover mounting guiding board of cylinder cap in air compressor；

Fig. 4 is the structural schematic diagram of upper cylinder cover in air compressor；

Fig. 5 is the rough schematic view of upper cylinder cover in air compressor；

Fig. 6 is the air-flow schematic diagram in air compressor in cylinder cap；

Fig. 7 is the schematic cross-sectional view of body in air compressor；

Fig. 8 is the schematic top plan view of body in air compressor.

[specific embodiment]

The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but under It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art Obtained other embodiments without making creative work, belong to protection scope of the present invention.

In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or Positional relationship, description embodiment merely for convenience and simplified description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.

As shown in Figures 1 to 8, the present embodiment be a kind of air compressor, specifically a kind of electric air compressor, It mainly includes body, cylinder cap, motor 21.

For cylinder cap, the cylinder cap in the present embodiment is equipped with inlet chamber 31 and discharge chamber 32, and the discharge chamber 32 is connected with Exhaust outlet 320, interior be equipped with of discharge chamber 32 are equipped with deflector 34, and discharge chamber 32 is separated into upper exhaust by the deflector 34 Channel 321 and lower exhaust passage 322 are communicated with intermediate flow through-hole between the upper exhaust passage 321 and lower exhaust passage 322 323, exhaust outlet 320 is connected to the upper exhaust passage 321, and compressed air enters from lower exhaust passage 322, by middle flow Enter after upper exhaust passage 321 behind hole 323 and is discharged from exhaust outlet 320.

In the present embodiment, the deflector 34 of discharge chamber 32 is separated into upper exhaust passage 321 and lower exhaust passage 322, together When on be connected between exhaust passage 321 and lower exhaust passage 322 with intermediate flow through-hole 323, in the present embodiment exhaust outlet 320 only with Upper exhaust passage 321 is connected to, and is not connected to lower exhaust passage 322.Such design substantially extends the flowing of compressed air Path, the cylinder cap of traditional air compressor, compressed air, which enters after discharge chamber 32, to be directly discharged from exhaust outlet 320, and this reality It applies compressed air in example and needs to be introduced into lower exhaust passage 322, exhaust passage is then entered back by intermediate flow through-hole 323 321, it is finally discharged from exhaust outlet 320, under the premise of identical 32 volume of discharge chamber, the circulation path of compressed air obviously increases Add, while not increasing the own vol of cylinder cap also.If the position of intermediate flow through-hole 323 is arranged more reasonable, such as It is disposed away from the end position of exhaust outlet 320, the circulation path for being equivalent to compressed air increases one times fully.

After extending the flow path of compressed air, reflex of the sound wave in discharge chamber 32 can become more, thus sound wave Energy consumption is bigger, so that noise reduction effect becomes apparent from when exhaust, in addition, deflector 34 is arranged in the present invention, is equivalent to entire The air-flow of discharge chamber 32 is also oriented to, so that the air-flow in discharge chamber 32 is more unified, uniform, it not only can be into one Step reinforces noise reduction effect, while exhaust can also be allowed more smooth.

The preferred implementation structure of specific cylinder cap is as follows:

In the present embodiment, the discharge chamber 32 is in thin-and-long channel, and thin-and-long channel referred herein refers to discharge chamber 32 length direction is greater than width direction, and by taking Fig. 3 as an example, X-axis direction is the length direction of discharge chamber 32, Y-axis place Direction be discharge chamber 32 width direction, discharge chamber 32 is arranged to this shape, can allow compressed air circulation path more It is long, further realize noise reduction effect.Similarly, thin-and-long channel also can be set into the shape of the inlet chamber 31 in the present embodiment, The noise of air inlet can be reduced.

In conjunction with Fig. 3 and Fig. 4, in order to allow the circulation path of compressed air to maximize, the intermediate flow through-hole 323 is located at exhaust The position of end position of the chamber 32 far from exhaust outlet 320, the intermediate flow through-hole 323 in the present embodiment is located at the right end of discharge chamber 32 Position, it is assumed that the length of discharge chamber 32 is L, by taking the compressed air of left position as an example, it is assumed that from the most left of lower exhaust passage 322 End flows through the intermediate flow through-hole 323 of right end, and path overall length is L, then logical from intermediate 323 recirculation of recirculation hole to upper exhaust The left end in road 321, it is 2L that such compressed air, which is equivalent to circulation path, and circulation increases as many as one times, such design, and The overall volume of cylinder cap is not increased.

In the present embodiment, the position of exhaust outlet 320 is preferably the opposite side in intermediate flow through-hole 323, certainly at other In embodiment, it is not limited to which this layout is also equipped with one in the middle position close to discharge chamber 32 in the present embodiment A exhaust outlet 320, the setting for exhaust outlet 320 can be determined according to actual needs.

In order to further strengthen noise reduction effect, flow-interfering bar 324, ginseng are provided in the present embodiment in upper exhaust passage 321 See Fig. 4 and Fig. 5, flow-interfering bar 324 be provided with it is a plurality of, wherein the length direction of the flow-interfering bar 324 intersects with airflow direction, preferably Be flow-interfering bar 324 length direction it is vertical with airflow direction, as shown in Figure 5, the length direction of flow-interfering bar 324 is in vertical substantially Direction, i.e. Y direction, and airflow direction is then from the horizontal direction turned left of the right side, i.e. X-direction, when sound wave is turned left propagation from the right side When, flow-interfering bar 324 can play barrier effect, to reinforce the reflection consumption of sound wave, to reduce noise.

In order to more be stably installed deflector 34, the inner wall of the discharge chamber 32 is equipped with positioning step 325, described to lead Flowing plate 34 is mounted on positioning step 325.Positioning step 325 in the present embodiment is annular in shape, along the inner wall of discharge chamber 32 If such design, deflector 34 is installed more firm, while this step-like design can also play blocking and make With the problem of playing anti-gas-leak, so that the compressed air of lower exhaust passage 322 can only be entered by intermediate flow through-hole 323 Exhaust passage 321.It is preferably provided with fixed column 3251 on step 325, fixes deflector 34 to facilitate design threaded hole.

In addition, for the concrete shape of discharge chamber 32, by the shape design of discharge chamber 32 at irregular in the present embodiment Shape specifically, the discharge chamber 32 includes normal exhaust section, and includes at least a discharge chamber necking section, the exhaust The cross-sectional area of chamber necking section is less than the cross-sectional area of normal exhaust section, and the discharge chamber 32 further includes an at least discharge chamber Flared section, the cross-sectional area of the discharge chamber flared section are greater than the cross-sectional area of normal exhaust section.

In order to facilitate the relationship between expression normal exhaust section, discharge chamber necking section, discharge chamber flared section three, with Fig. 5 For, peak width forms the width of normal exhaust section, the region where label 32a, in Y-axis side between straight line d1 and straight line d2 To width to be significantly greater than the width between d1 and d2, the region label 32a forms discharge chamber flared section, and label 32b Region will be significantly less than the width between d1 and d2 in the width of Y direction, therefore, therefore the region label 32b forms row Air cavity necking section.

The purpose of discharge chamber necking section and discharge chamber flared section is set, is to constitute the shape of discharge chamber 32 irregular Shape, the discharge chamber 32 of irregular shape facilitates the reflection path for upsetting sound wave, so as to be consumed ground more for sound wave. Normal exhaust section, discharge chamber necking section, the shape of discharge chamber flared section in the present embodiment in Fig. 5 is just for the sake of right each other Than and set, the shape being not limited in other embodiments in the present embodiment, can also be in addition, in other embodiment It is only discharge chamber necking section, is also possible to only discharge chamber flared section.

Similarly, the shape of the inlet chamber 31 in the present embodiment is also provided with into irregular shape, also shown in FIG. 5, institute Stating inlet chamber 31 includes normal air inlet section, and includes at least an inlet chamber necking section, the cross section of the inlet chamber necking section Area is less than the cross-sectional area of normal air inlet section, and the inlet chamber 31 further includes an at least inlet chamber flared section, the air inlet The cross-sectional area of chamber flared section is greater than the cross-sectional area of normal air inlet section, and discharge chamber is arranged in principle of noise reduction and discharge chamber Necking section, the principle of discharge chamber flared section are similar, do not illustrate excessively herein.

In addition, cylinder cap includes upper cylinder cover 301 and lower cylinder cap 302 for convenient processing and manufacture in the present embodiment, cylinder is generally played Lid is also referred to as valve plate, is provided with exhaust valve and intake valve on lower cylinder cap, discharge chamber is by the inner cavity of upper cylinder cover and the inner cavity of lower cylinder cap Collectively constitute, the assembly connection of upper cylinder cover 301 and lower cylinder cap 302 can be found in Fig. 2, lower cylinder cap 302 be equipped with allow compressed gas from The stomata 300 being discharged into cylinder block 11 in discharge chamber 32.

Fig. 3 to Fig. 5, displaying be upper cylinder cover structural schematic diagram, deflector 34 is preferably mounted in the present embodiment On upper cylinder cover 301, but the design of those skilled in the art through this embodiment, it can mutually arrive in other embodiments, lead Flowing plate 34 also can be set on lower cylinder cap 302.

It in the present embodiment, is fixed between upper cylinder cover 301 and lower cylinder cap 302 by fastener, wherein the upper cylinder half of the cylinder cap Lid 301 is equipped with the through-hole 3011 of multiple fastenings, and the cylinder cap forms the discharge chamber necking at an at least through-hole 3011 Section, due to design through-hole 3011, the inner wall of discharge chamber 32 is designed in this way naturally towards projecting inward, and upper cylinder cover 301 does not have to deliberately Discharge chamber necking section is designed, using just naturally forming discharge chamber necking section at through-hole 3011.It should be noted that referred herein Through-hole be not limited to fixed upper cylinder cover and lower cylinder cap is used, be also possible to the through-hole for being fixed to cylinder cap on body.

In addition, also improve in the present embodiment body, with specific reference to Fig. 1, Fig. 2, Fig. 7, Fig. 8, in the present embodiment Body includes cylinder block 11, crankcase 12 and electric machine support 13, is equipped with cylinder inner cavity 111, the crankshaft in the cylinder block 11 Be equipped with crankshaft cavity 121 in case 12, be equipped with machine shaft chamber 131 in the electric machine support 13, the cylinder block 11, crankcase 12, Electric machine support 13 is structure as a whole, the central axes 131a coaxial arrangement of the central axes 121a, machine shaft chamber 131 of crankshaft cavity 121, And the central axes 131a of the central axes 111a of cylinder inner cavity 111, the central axes 121a of crankshaft cavity 121, machine shaft chamber 131 is located at On same plane.

In the present embodiment, cylinder block 11, crankcase 12, electric machine support 13 are respectively provided with into a single integrated structure, manufactured in this way When, directly the central axes 131a of the central axes 121a of crankshaft cavity 121, machine shaft chamber 131 can be coaxially disposed, it is ensured that Transmission between the output revolving shaft and crankshaft of motor 21 guarantees good concentricity, while cylinder block 11, crankcase 12, motor branch Frame 13 is respectively provided with into a single integrated structure, it can also be ensured that the central axes 111a of cylinder inner cavity 111, crankshaft cavity 121 central axes 121a, The central axes 131a of machine shaft chamber 131 is in the same plane, in this way from 21 output revolving shaft of motor to crankshaft to cylinder chamber 111 piston, the available good guarantee of transmission accuracy, so that the complete machine operation of air compressor is more stable, Noise, vibration are reduced, surface structure is compact.

In addition, in the present embodiment, due to cylinder block 11, crankcase 12,13 integral structure of electric machine support, it is upper from processing and Speech, reduce the processing of 12 faying face of cylinder block 11 and crankcase, decrease crankcase 12,13 faying face of electric machine support plus Work reduces processing cost, but also the components such as gasket, fastener that can reduce cylinder block 11 and 12 junction of crankcase, Leakage of oil failure caused by can also avoiding because of faying face problem.

Body is specific as follows in the present embodiment:

In the present embodiment, as shown in fig. 7, the cylinder block 11 includes cylinder body 112 and cylinder jacket 113, cylinder jacket 113 Inner cavity form the cylinder inner cavity 111, the cylinder jacket 113 is alloy plastid, and alloy plastid refers to antifriction alloy here Material, the cylinder body 112 are integrally formed with crankcase 12, and 113 castingin of cylinder jacket is in cylinder body 112, cylinder Ontology 112, which is equivalent to, to be coated on outside cylinder jacket 113.In this way design after, the inner cavity of cylinder jacket 113 be it is movable for piston, it is wear-resisting Property on it is more preferable, and 112 part of cylinder body is used only to fixed, support and uses, the requirement of intensity hardness do not need it is very high, can To use cast iron or aluminum material, so this structure of the present embodiment, not only ensure that the wear-resisting problem of cylinder block 11, but also realize Mitigate the purpose of cost, certain cylinder body 112 is preferably aluminum body, can also further realize light-weighted purpose.

In the present embodiment, the electric machine support 13 is connected with motor 21, and the motor 21, which is equipped with, protrudes into the motor turn Axocoel 131 and with the matched first boss 211 of 131 inner wall of machine shaft chamber, specifically, be first boss 211 outer diameter with The internal diameter of machine shaft chamber 131 is identical, realizes that shape positions using first boss 211 and 21 shaft inner cavity of motor, to guarantee 21 shaft of motor and crankshaft guarantee accurate concentricity.

In addition, the motor 21 is installed on the side of body in the present embodiment, body is equipped in the lower position of motor 21 Accommodation groove 14, the accommodation groove 14 in the present embodiment are preferably the bottom of directly perforation body, can do light weight degree in this way It is more preferable, it is more light using one in addition, be equipped with the support bar 141 for being used to support 21 bottom of motor on the accommodation groove 14 The support bar of quantization guarantees that certain support is arranged at 21 bottom of motor.

In addition, body described in the present embodiment is additionally provided with shaft coupling chamber between machine shaft chamber 131 and crankshaft cavity 121 15, for shaft coupling chamber 15 for accommodating shaft coupling, shaft coupling chamber 15 also has a corresponding central axes 15a, in the shaft coupling chamber 15 The central axes coaxial arrangement of axis, the central axes of crankshaft cavity 121, machine shaft chamber 131, to guarantee 21 turns of shaft coupling and motor Concentricity between axis, three axis of crankshaft is more preferable.

In order to reinforce the seal oil effect between shaft coupling chamber 15 and crankcase 12, the shaft coupling chamber 15 and crankshaft 12 connectivity part of case is equipped with oil sealing hole 16, and oil sealing is installed in oil sealing hole 16, and the oil sealing hole 16 in the present embodiment is circle, in order into one Step reinforces concentricity, and the central axes 16a of the oil sealing hole 16 and the central axes 121a of crankshaft cavity 121 are coaxial.

The body is additionally provided with side opening 126 in the opposite side of electric machine support 13, and oil feed pump 17 is equipped on the side opening, Be convexly equipped on oil feed pump 17 protrude into side opening 126 and with the matched second boss of 126 inner wall of side opening, second boss asked due to visual angle Inscribe not shown in FIG. 2, oil feed pump 17 is equipped with axis hole, and one end of crankshaft is mounted in axis hole, and second boss is matched with side opening 126 It closes, so that concentricity is more preferable.

In the present embodiment, the body is also integrally formed with the chassis 18 for installing oil sump 22, in the chassis 18 Equipped with lubricant reservoir 181,18 bottom of chassis is also equipped with oil sump 22, and the inner cavity of the oil sump 22 and lubricant reservoir 181 are total With the space of composition storage lubricating oil.

Also facilitate installation oil strainer integrally formed with the machine filter hole 122 for mounting oil filter 23 on the body Clear device 23, in addition, the body in the present embodiment is also integrally formed with oil return pipe mounting hole 123, fuel sucking pipe mounting hole 124, for peace Reinstall oil pipe 24, fuel sucking pipe 25 is provided convenience, and is also advanced optimized in the present embodiment, integrally formed with for install change The heat exchanger mounting hole 125 of hot device, heat exchanger 26 can be directly installed on body by heat exchanger mounting hole 125, so right For the present embodiment, some additional components are installed on body and are very convenient.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with The those skilled in the art should be understood that the present invention includes but is not limited to attached drawing and interior described in specific embodiment above Hold.Any modification without departing from function and structure principle of the invention is intended to be included in the range of claims.

Claims (10)

1. a kind of cylinder cap of air compressor, cylinder cap is equipped with inlet chamber and discharge chamber, and the discharge chamber is connected with exhaust outlet, It is characterized in that thering is deflector in the discharge chamber, discharge chamber is separated into upper exhaust passage and lower exhaust by the deflector Channel, is communicated with intermediate flow through-hole between the upper exhaust passage and lower exhaust passage, exhaust outlet and the upper exhaust passage connect Logical, compressed air enters from lower exhaust passage, enters after upper exhaust passage after intermediate flow through-hole and is discharged from exhaust outlet.

2. the cylinder cap of air compressor as described in claim 1, which is characterized in that the discharge chamber and/or inlet chamber are in narrow Elongate channel.

3. the cylinder cap of air compressor as described in claim 1, which is characterized in that it is remote that the middle flow hole is located at discharge chamber End position from exhaust outlet.

4. the cylinder cap of air compressor as described in claim 1, which is characterized in that the upper exhaust passage and/or lower exhaust Flow-interfering bar is equipped in channel, the length direction of the flow-interfering bar intersects with airflow direction.

5. the cylinder cap of air compressor as described in claim 1, which is characterized in that the inner wall of the discharge chamber is equipped with positioning table Rank, the deflector are mounted on positioning step.

6. the cylinder cap of air compressor as described in claim 1, which is characterized in that the discharge chamber includes normal exhaust section, And a discharge chamber necking section is included at least, the cross-sectional area of the discharge chamber necking section is less than the cross section of normal exhaust section Area.

7. the cylinder cap of air compressor as claimed in claim 6, which is characterized in that the cylinder cap is equipped with multiple fastenings Through-hole, the cylinder cap form the discharge chamber necking section in an at least through hole.

8. the cylinder cap of air compressor as claimed in claim 6, which is characterized in that the discharge chamber further includes at least one exhaust Chamber flared section, the cross-sectional area of the discharge chamber flared section are greater than the cross-sectional area of normal exhaust section.

9. the cylinder cap of air compressor as described in claim 1, which is characterized in that the inlet chamber includes normal air inlet section, And an inlet chamber necking section is included at least, the cross-sectional area of the inlet chamber necking section is less than the cross section of normal air inlet section Area；And/or the inlet chamber further includes an at least inlet chamber flared section, the cross-sectional area of the inlet chamber flared section is big In the cross-sectional area of normal air inlet section.

10. a kind of air compressor, including body and cylinder cap, which is characterized in that the cylinder cap use as claim 1 to 9 it Cylinder cap described in one.