CN203394893U - Vacuum generator - Google Patents
Vacuum generator Download PDFInfo
- Publication number
- CN203394893U CN203394893U CN201320430592.1U CN201320430592U CN203394893U CN 203394893 U CN203394893 U CN 203394893U CN 201320430592 U CN201320430592 U CN 201320430592U CN 203394893 U CN203394893 U CN 203394893U
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- Prior art keywords
- contraction
- section
- diffusion
- head end
- nozzle
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- Expired - Fee Related
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- 230000008602 contraction Effects 0.000 claims abstract description 57
- 238000009792 diffusion process Methods 0.000 claims abstract description 31
- 238000010276 construction Methods 0.000 claims description 25
- 230000004044 response Effects 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 230000009467 reduction Effects 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model discloses a vacuum generator which comprises a Venturi nozzle and a tubular receiver nozzle. The Venturi nozzle comprises a contraction section and a diffusion section, wherein the contraction section comprises a contraction head end and a contraction tail end, the diffusion section comprises a diffusion head end and a diffusion tail end, the contraction head end and the diffusion head end are opposite, the other side of the Venturi nozzle at the diffusion section, relative to the contraction section, is provided with a mounting section, the inner diameter of one end of the mounting section relative to the diffusion section is larger than the inner diameter of the contraction head end, and one end of the receiver nozzle is connected to the Venturi nozzle through the mounting section. The diffusion tail end is opposite to the receiver nozzle, the inner diameter of the contraction tail end is identical with that of the diffusion head end, the inner diameter of the contraction head end is larger than that of the contraction tail end, the inner diameter of the contraction tail end is larger than that of the diffusion head end, a buffer section is arranged between the contraction section and the diffusion section, and the inner diameter of the buffer section is identical with that of the contraction head end. The vacuum generator has the advantages of high response speed, low gas consumption and energy conservation.
Description
Technical field
The utility model relates to a kind of generator, and more particularly, it relates to a kind of vacuum generator.
Background technique
Vacuum generator is exactly to utilize malleation source of the gas to produce a kind of novel of negative pressure, efficient, clean, economical, small-sized vacuum components and parts, this makes there is being compressed-air actuated place, or in a pneumatic system, needs the place acquisition negative pressure of positive/negative-pressure to become very easy and convenient simultaneously.Vacuum generator is widely used in machinery in industrial automation, electronics, packing, printing, the fields such as plastics and robot.
Vacuum generator is arranged to tubulose conventionally, comprises receiver nozzle and Venturi nozzle, and Venturi nozzle is again Venturi tube, 2 conical tubes with contraction section AB and diffuser BC, consist of, B place caliber is minimum, is called throat, the caliber at A and C place is equal, and the distance of AB is less than BC.When fluid passes through from Venturi tube, according to energy Wei Yi Changshu of real fluid.When Venturi tube horizontal positioned, the flow velocity of throat increases, and pressure decreased, so produce pressure reduction between import department and throat, vacuum generator is according to the process of Venturi tube principle work: pressurized air enters vacuum generator entrance A, from narrow jet pipe B ejection, just make the pressure decreased (vacuum) at nozzle rear portion, air enters from vacuum inlet D, and then, the air entering sprays from baffler C together with entering the pressurized air of nozzle.The vacuum generator of this set because pressurized air directly enters into diffuser by contraction section, and then enters receiver nozzle in when work, and between contraction section and diffuser, pressure reduction is less, and speed of response is slow and air consumption is large, not energy-conservation.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of fast response time, the vacuum generator that air consumption is little and more energy-conservation.
For achieving the above object, the utility model provides following technological scheme:
A kind of vacuum generator, the receiver nozzle that comprises Venturi nozzle and tubulose, described Venturi nozzle comprises contraction section and diffuser, described contraction section comprises contraction head end and shrinks tail end, described diffuser comprises diffusion head end and diffusion end, described contraction end is relative with diffusion head end, described Venturi nozzle is provided with construction section in the opposite side of the relative contraction section of diffuser, the relative diffuser of described construction section one end internal diameter is greater than and shrinks receiver nozzle one end described in head end internal diameter and access Venturi nozzle by construction section, described diffusion end is relative with receiver nozzle, described contraction end internal diameter equates with diffusion head end internal diameter, described contraction head end internal diameter is greater than and shrinks end internal diameter, described contraction end internal diameter is greater than diffusion head end internal diameter, between described contraction section and diffuser, be provided with breeze way, described breeze way internal diameter equates with contraction head end internal diameter.
By adopting technique scheme, construction section is set, the direct admission of air of receiver nozzle access construction section, between contraction section and diffuser, breeze way is set, pressurized air enters Venturi nozzle, by the larger contraction head end of internal diameter through the less contraction end compression injection of internal diameter to breeze way, breeze way internal diameter is little, flow velocity increases, pressure decreased, thereby make to produce pressure reduction between contraction section and breeze way, and then be ejected into diffuser through breeze way savings energy, by diffuser, enter receiver nozzle again, breeze way is set and has increased the pressure reduction between contraction section and breeze way, fast response time, air consumption is few, comparatively energy-conservation.
Further improvement as technique scheme: described receiver nozzle is provided with the convex edge portion of conflicting and connecting for the end of the diffuser the other end relative to construction section, described convex edge portion external diameter is greater than construction section external diameter.
By adopting technique scheme, arranging the combination between Venturi nozzle and receiver nozzle of convex edge portion is spacing.
The utility model is further set to: described receiver nozzle and construction section interference fit.
By adopting technique scheme, the soundness of receiver nozzle and construction section interference fit stiffening device.
Accompanying drawing explanation
Fig. 1 is the Venturi tube in background technique;
Fig. 2 is the utility model vacuum generator embodiment's structural representation.
Reference character:
1, Venturi nozzle; 11, contraction section; 111, shrink head end; 112, shrink end; 12, diffuser; 121, diffusion head end; 122, diffusion end; 13, breeze way; 14, construction section; 2, receiver nozzle; 21, convex edge portion.
Embodiment
With reference to Fig. 2, the utility model vacuum generator embodiment is described further.
As shown in Figure 2, the present embodiment vacuum generator, the receiver nozzle 2 that comprises Venturi nozzle 1 and tubulose, described Venturi nozzle 1 comprises contraction section 11 and diffuser 12, described contraction section 11 comprises contraction head end 111 and shrinks tail end, described diffuser 12 comprises diffusion head end 121 and diffusion end 122, described contraction end 112 is relative with diffusion head end 121, described Venturi nozzle 1 is provided with construction section 14 in the opposite side of diffuser 12 relative contraction sections 11, the relative diffuser 12 one end internal diameters of described construction section 14 are greater than and shrink described in head end 111 internal diameters receiver nozzle 2 one end by construction section 14 access Venturi nozzles 1, described diffusion end 122 is relative with receiver nozzle 2, described contraction end 112 internal diameters equate with diffusion head end 121 internal diameters, described contraction head end 111 internal diameters are greater than and shrink end 112 internal diameters, described contraction end 112 internal diameters are greater than diffusion head end 121 internal diameters, between described contraction section 11 and diffuser 12, be provided with breeze way 13, described breeze way 13 internal diameters equate with contraction head end 111 internal diameters.
By adopting technique scheme, construction section 14 is set, the direct admission of air of receiver nozzle 2 access construction section 14, between contraction section 11 and diffuser 12, breeze way 13 is set, pressurized air enters Venturi nozzle 1, by the larger contraction head end 111 of internal diameter through less contraction end 112 compression injections of internal diameter to breeze way 13, breeze way 13 internal diameters are little, flow velocity increases, pressure decreased, thereby make to produce pressure reduction between contraction section 11 and breeze way 13, and then be ejected into diffuser 12 through breeze way 13 savings energy, by diffuser 12, enter receiver nozzle 2 again, breeze way 13 is set and has increased the pressure reduction between contraction section 11 and breeze way 13, fast response time and air consumption are few.
Described receiver nozzle 2 is provided with the convex edge portion 21 of conflicting and connecting for the end of diffuser 12 the other ends relative to construction section 14, and described convex edge portion 21 external diameters are greater than construction section 14 external diameters.By adopting technique scheme, arranging the combination between Venturi nozzle 1 and receiver nozzle 2 of convex edge portion 21 is spacing.
Described receiver nozzle 2 and construction section 14 interference fit.By adopting technique scheme, the soundness of receiver nozzle 2 and construction section 14 interference fit stiffening devices.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a vacuum generator, the Venturi nozzle that comprises receiver nozzle and tubulose, described Venturi nozzle comprises contraction section and diffuser, described contraction section comprises contraction head end and shrinks tail end, described diffuser comprises diffusion head end and diffusion end, described contraction end is relative with diffusion head end, it is characterized in that: described Venturi nozzle is provided with construction section in the opposite side of the relative contraction section of diffuser, the relative diffuser of described construction section one end internal diameter is greater than and shrinks receiver nozzle one end described in head end internal diameter and access Venturi nozzle by construction section, described diffusion end is relative with receiver nozzle, described contraction end internal diameter equates with diffusion head end internal diameter, described contraction head end internal diameter is greater than and shrinks end internal diameter, described contraction end internal diameter is greater than diffusion head end internal diameter, between described contraction section and diffuser, be provided with breeze way, described breeze way internal diameter equates with contraction head end internal diameter.
2. vacuum generator according to claim 1, is characterized in that: described receiver nozzle is provided with the convex edge portion of conflicting and connecting for the end of the diffuser the other end relative to construction section, and described convex edge portion external diameter is greater than construction section external diameter.
3. vacuum generator according to claim 1 and 2, is characterized in that: described receiver nozzle and construction section interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430592.1U CN203394893U (en) | 2013-07-17 | 2013-07-17 | Vacuum generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430592.1U CN203394893U (en) | 2013-07-17 | 2013-07-17 | Vacuum generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394893U true CN203394893U (en) | 2014-01-15 |
Family
ID=49906428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320430592.1U Expired - Fee Related CN203394893U (en) | 2013-07-17 | 2013-07-17 | Vacuum generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394893U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757008A (en) * | 2016-04-15 | 2016-07-13 | 南通宏大机电制造有限公司 | Vacuum generator |
| CN106659991A (en) * | 2014-08-06 | 2017-05-10 | 戴科知识产权控股有限责任公司 | Pneumatically actuated vacuum pump having multiple venturi gaps and check valves |
| US10100720B2 (en) | 2015-01-09 | 2018-10-16 | Dayco Ip Holdings, Llc | Crankcase ventilating evacuator |
| US10273978B2 (en) | 2014-08-27 | 2019-04-30 | Dayco IP, Holdings LLC | Low-cost evacuator for an engine having tuned Venturi gaps |
| US10316864B2 (en) | 2015-04-13 | 2019-06-11 | Dayco Ip Holdings, Llc | Devices for producing vacuum using the venturi effect |
| US10443627B2 (en) | 2015-03-09 | 2019-10-15 | Dayco Ip Holdings, Llc | Vacuum producing device having a suction passageway and a discharge passageway entering through the same wall |
| US10626888B2 (en) | 2014-07-10 | 2020-04-21 | Dayco Ip Holdings, Llc | Dual Venturi device |
| CN113565738A (en) * | 2021-07-30 | 2021-10-29 | 华冠特种设备(江苏)有限公司 | Vacuum generator with noise reduction function and control system thereof |
-
2013
- 2013-07-17 CN CN201320430592.1U patent/CN203394893U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10626888B2 (en) | 2014-07-10 | 2020-04-21 | Dayco Ip Holdings, Llc | Dual Venturi device |
| CN106659991A (en) * | 2014-08-06 | 2017-05-10 | 戴科知识产权控股有限责任公司 | Pneumatically actuated vacuum pump having multiple venturi gaps and check valves |
| CN106659991B (en) * | 2014-08-06 | 2018-05-22 | 戴科知识产权控股有限责任公司 | Pneumatically actuated formula vacuum pump with a plurality of venturi gap and check-valves |
| US10273978B2 (en) | 2014-08-27 | 2019-04-30 | Dayco IP, Holdings LLC | Low-cost evacuator for an engine having tuned Venturi gaps |
| US10100720B2 (en) | 2015-01-09 | 2018-10-16 | Dayco Ip Holdings, Llc | Crankcase ventilating evacuator |
| US10443627B2 (en) | 2015-03-09 | 2019-10-15 | Dayco Ip Holdings, Llc | Vacuum producing device having a suction passageway and a discharge passageway entering through the same wall |
| US10316864B2 (en) | 2015-04-13 | 2019-06-11 | Dayco Ip Holdings, Llc | Devices for producing vacuum using the venturi effect |
| CN105757008A (en) * | 2016-04-15 | 2016-07-13 | 南通宏大机电制造有限公司 | Vacuum generator |
| CN113565738A (en) * | 2021-07-30 | 2021-10-29 | 华冠特种设备(江苏)有限公司 | Vacuum generator with noise reduction function and control system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
|
| CU01 | Correction of utility model | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: Expiration and Termination of 39 Volume 3102 Patent on August 4, 2023 Number: 31-02 Volume: 39 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 |