CN209271716U - A kind of efficiency spraying apparatus - Google Patents
A kind of efficiency spraying apparatus Download PDFInfo
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- CN209271716U CN209271716U CN201821386261.1U CN201821386261U CN209271716U CN 209271716 U CN209271716 U CN 209271716U CN 201821386261 U CN201821386261 U CN 201821386261U CN 209271716 U CN209271716 U CN 209271716U
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- spraying apparatus
- converging transition
- flow direction
- fluid
- internal area
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Abstract
The utility model discloses a kind of efficiency spraying apparatus, main jet, receiving chamber, mixing chamber and diffuser casing including connection, the main jet includes: converging transition, is located at throat upstream according to flow direction and actual internal area is gradually reduced along fluid flow direction, be connected with Working-fluid intaking；Divergent segment is located at throat downstream according to flow direction and actual internal area is gradually increased along fluid flow direction；The converging transition includes leading portion and back segment, and the actual internal area variation of the back segment is gentler than leading portion；The converging transition of the efficiency spraying apparatus of the utility model, main jet uses this pungent fundamental mode line of Vito, so that the velocity variations of working fluid and driving fluid are gentler, reduces energy loss, to improve ejector efficiency.
Description
Technical field
The utility model belongs to fluid machinery technical field, more particularly, to a kind of efficiency spraying apparatus.
Background technique
Injector is a kind of device with high-pressure fluid injection low-pressure fluid to obtain with intermediate pressure fluid, injection
Device is usually to be made of four main jet, receiving chamber, mixing chamber and diffuser casing parts, simple with structure, at low cost, fortune
The advantages that row is reliable is widely used in the fields such as industry and the refrigeration in agricultural, material conveying, taste removal.
The working principle of injector is that the operating fluid crosses main jet of high pressure carries out adiabatic expansion, in nozzle exit
Low-voltage high speed stream is formed, and then the driving fluid of injection injector sequentially enters receiving chamber, mixing chamber, two fluids is sufficiently mixed
Into diffuser casing, speed reduces pressure rise, reaches outlet pressure parameter.
Such as the patent document of Publication No. CN101412011A discloses a kind of adjustable spraying apparatus, including outside injector
Chamber, nozzle, nozzle contraction part, nozzle throat and nozzle divergence part, injector exocoel be successively arranged receiving chamber, mixing chamber,
Diffuser casing, mixing chamber is successively arranged in mixing chamber conical entrance, variable cross-section mixing chamber, injector chambers body to be connect equipped with nozzle extension
Head, nozzle extend connector one end and are equipped with nozzle, and nozzle extends the connector other end and is equipped with control device, and nozzle extends connector and passes through company
Fitting is fixed on injector cavity one end, and nozzle enters mixing chamber, and expansion chamber exit is equipped with fluid-mixing exit passageway, and nozzle prolongs
Connector is stretched equipped with high-pressure fluid intake channel, and receiving chamber is equipped with low-pressure fluid intake channel.When the refrigerant flow for entering nozzle
When variation, by adjusting nozzle throat sectional area and mixing section conical entrance sectional area simultaneously, nozzle efficiency is adequately improved
Meanwhile air-flow being made not occur shock wave or backflow phenomenon in mixing section, ejector efficiency is improved, above-mentioned ejector applications are in injection
System effectiveness is improved in circulation.
Although the injector of above structure improves system effectiveness, performance superiority and inferiority and its own knot to a certain extent
Structure is closely bound up, and main loss is that working fluid is different with the speed of driving fluid before mixing, generates vortex phenomenon, and
Shock wave phenomena is generated with after mixing in mixed process.According to Bernoulli equation, working fluid is exhausted in the main jet of injector
Thermal expansion, partial pressure potential energy are kinetic energy, and energy conversion efficiency is related with fluid state parameter and nozzle arrangements size；Draw
Jet body enters the contraction section of receiving chamber, and velocity variations are influenced by receiving chamber's contraction section molded line, and molded line improper use will generate whirlpool
Stream increases injector energy loss.
In view of the above-mentioned problems, proposing a kind of using pungent this base curves design injector nozzle converging transition in Vito and receiving chamber's receipts
The efficiency spraying apparatus of contracting segment type line reduces energy loss when operating fluid crosses nozzle, reduces driving fluid and flows through receiving chamber
When energy loss to improve ejector efficiency, have a very important significance.
Utility model content
The utility model provides a kind of efficiency spraying apparatus, it is possible to reduce energy loss when operating fluid crosses nozzle,
Energy loss when driving fluid flows through receiving chamber is reduced, ejector efficiency is improved.
A kind of efficiency spraying apparatus, main jet, receiving chamber, mixing chamber and diffuser casing including connection, the main jet
Include:
Converging transition is located at throat upstream according to flow direction and actual internal area is gradually reduced along fluid flow direction, with work
Fluid inlet is connected；
Divergent segment is located at throat downstream according to flow direction and actual internal area is gradually increased along fluid flow direction；
The converging transition includes leading portion and back segment, and the actual internal area variation of the back segment is gentler than leading portion.
The efficiency spraying apparatus of the utility model in use, operating fluid crosses main jet converging transition, velocity variations are flat
It is slow, to reduce energy loss.
Gentle in order to which velocity variations are better achieved, the main jet converging transition leading portion and back segment are along fluid flow direction
Sectional area using this pungent base curves equation calculation of Vito as foundation, it is closely related with leading portion entrance and back segment outlet diameter.It is preferred that
, the actual internal area variation of the main jet converging transition uses this pungent base curves of Vito.This pungent base curves of the Vito, tool
There is contraction leading portion steeper, the relatively gentle feature of back segment reduces converging transition energy damage so that fluid velocity variation is gentler
It loses.
Preferably, this pungent base curves equation of the Vito are as follows:
In formula, r0For converging transition outlet height, R is converging transition entrance height, and L is converging transition axial length, and x enters for distance
Distance at mouthful, r are the height at converging transition entrance x.
Preferably, the receiving chamber includes the body cavity being connected to driving fluid entrance and is connected to the mixing chamber
Contraction section.Working fluid respectively enters mixing chamber with driving fluid and realizes that fluid mixes.
In order to reduce the loss of receiving chamber's self-energy, it is preferred that the actual internal area of receiving chamber's contraction section, which changes, to be used
This pungent base curves of Vito.This pungent base curves of the Vito have contraction leading portion steeper, the relatively gentle feature of back segment, so that
Fluid velocity variation is gentler.The calculation formula of the sectional area of the sectional area and main jet converging transition of receiving chamber's contraction section
It is identical.
Preferably, this pungent base curves equation of the Vito are as follows:
In formula, r0For contraction section outlet height, R is contraction section entrance height, and L is contraction section axial length, and x enters for distance
Distance at mouthful, r are the height at contraction section entrance x.
Preferably, the sectional area of the mixing chamber is shunk along fluid flow direction leading portion, and back segment is constant.Main jet outlet
Fluid and receiving chamber's outlet fluid enter mixing chamber simultaneously.Since receiving chamber's contraction section uses this pungent base curves of Vito, thus, it obtains
More uniformly stable driving fluid is obtained, momentum and energy between working fluid and driving fluid are being continued to complete in mixing chamber
Transmittance process.
Preferably, the diffusion structure that the diffuser casing uses actual internal area to be gradually increased along fluid flow direction.Through expanding
The speed for dissipating room fluid-mixing further decreases, and most kinetic energy of fluid-mixing are converted into pressure potential, higher to obtain
The fluid of pressure realizes the purpose of injector pressurization.
The utility model has the beneficial effects that
The efficiency spraying apparatus of the utility model, the converging transition and receiving chamber's contraction section of main jet use Vito Xin Siji
The changes of section molded line of equation reduces energy loss so that working fluid and the variation of driving fluid velocity gradient are gentler,
Improve ejector efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the efficiency spraying apparatus of the utility model.
Fig. 2 is the partial enlarged view of the receiving chamber of the utility model.
Fig. 3 is the partial enlarged view of utility model works nozzle.
Fig. 4 is the schematic diagram of each parameter of this pungent base curves of Vito of the utility model.
Wherein: 1, main jet；1a, main jet converging transition；2, Working-fluid intaking；3, driving fluid entrance；4, it connects
By room；4a, this chamber of receiving chamber；4b, receiving chamber's contraction section；5, mixing chamber；6, diffuser casing.
Specific embodiment
Embodiment
As shown in Figure 1, the efficiency spraying apparatus of the present embodiment includes: main jet 1, Working-fluid intaking 2, driving fluid enters
Mouth 3, receiving chamber 4, mixing chamber 5 and diffuser casing 6.
Main jet 1 is connected with Working-fluid intaking 2, and driving fluid entrance 3 is connected with receiving chamber 4, main jet
1, respectively with mixing chamber 5, mixing chamber 5 is connected to diffuser casing 6 for receiving chamber 4.
As shown in Fig. 2, receiving chamber 4 includes the song of the body cavity 4a and receiving chamber contraction section 4b being connected with body cavity 4a
Line designs molded line according to pungent this base curves in Vito, to reduce working fluid and driving fluid when mixing because of energy caused by speed difference
Amount loss.
As shown in figure 3, main jet 1 uses pantograph structure, main jet converging transition 1a is set according to this pungent base curves of Vito
Molded line is counted, leading portion is steeper, and back segment is relatively gentle, so that operating fluid velocity variation is gentler, reduces energy loss.
This pungent base curves equation of the Vito of main jet converging transition 1a are as follows:
In formula, r0For converging transition outlet height, R is converging transition entrance height, and L is converging transition axial length, and x enters for distance
Distance at mouthful, r are the height at converging transition entrance x, as shown in Figure 4.
In addition the calculation formula of receiving chamber's contraction section 4b is identical with main jet converging transition 1a.
The course of work of the injector of the present embodiment is as follows: the working fluid of high pressure by Working-fluid intaking 2 successively into
Enter main jet converging transition 1a and divergent segment, this pungent fundamental mode line of the Vito of main jet converging transition 1a helps to reduce energy damage
It loses, working fluid adiabatic expansion in main jet 1, forms low pressure in 1 exit of main jet.
Driving fluid is by driving fluid entrance 3, and under the action of main jet 1 exports low pressure, into having, Vito is pungent
The receiving chamber 4 of the receiving chamber 4 of this fundamental mode cable architecture, this pungent fundamental mode cable architecture of Vito effectively reduces energy loss.Workflow
Body and driving fluid are by momentum and energy exchange in mixing chamber 5, and it is identical to progressively reach speed, boost in pressure, and in diffusion
Speed is further decreased in room 6, improves pressure, finally achievees the purpose that promote citation jet body pressure in injector exit.
In injector practical work process, fluid state parameter with component part each in injector structure size variation and
Variation, biggish velocity gradient and barometric gradient are more also easy to produce energy loss, simulate working fluid and receiving in injector nozzle 1
The fluid molded line variation of driving fluid in room 4, the results showed that, the main jet according to pungent this base curves equation design in Vito is tapered
Section 1a and receiving chamber contraction section 4b can reduce the inhomogeneities of flow velocity, reduce energy loss.
Application examples
It is simulated calculating for the injector of traditional structure injector and embodiment, the assumed condition of calculating is such as
Under: (1) refrigerant be R134a；(2) traditional structure injector, main jet converging transition and receiving chamber's contraction section are all used
Tapered mold tapered configuration；(3) for traditional structure injector, the pressure and injection of working fluid on mixing chamber inlet section
The pressure of fluid is identical；(4) for the injector of embodiment, the pressure of mixing chamber inlet section working fluid and driving fluid
Pressure is identical；(5) pressure of working fluid be 2120kPa, temperature 348K, the pressure of driving fluid is 375kPa, temperature is
285K。
The mass ratio of induced-to-inducing air that the efficiency spraying apparatus of the application example reaches is as follows with the calculated result that injector outlet pressure changes:
As can be seen from the above results, the present embodiment is by using pungent this base curves design work nozzle converging transition 1a in Vito
And receiving chamber contraction section 4b reduces energy loss when operating fluid crosses nozzle so that fluid velocity variation is gentler, reduces
Driving fluid flows through energy loss when receiving chamber, and the present embodiment is when injector outlet pressure is identical, accessible injector
Mass ratio of induced-to-inducing air is typically much higher than conventional injector, and especially when adherence pressure requires higher, improvement is more obvious, and then demonstrate,proves
The superiority of the utility model is illustrated.
Claims (8)
1. a kind of efficiency spraying apparatus, main jet, receiving chamber, mixing chamber and diffuser casing including connection, the main jet packet
It includes:
Converging transition is located at throat upstream according to flow direction and actual internal area is gradually reduced along fluid flow direction, with working fluid
Entrance is connected；
Divergent segment is located at throat downstream according to flow direction and actual internal area is gradually increased along fluid flow direction；
It is characterized in that, the converging transition includes leading portion and back segment, the actual internal area variation of the back segment is gentler than leading portion.
2. efficiency spraying apparatus as described in claim 1, which is characterized in that the actual internal area of the main jet converging transition becomes
Change and uses this pungent base curves of Vito.
3. efficiency spraying apparatus as claimed in claim 2, which is characterized in that this pungent base curves equation of the Vito are as follows:
In formula, r0For converging transition outlet height, R is converging transition entrance height, and L is converging transition axial length, and x is apart from inlet
Distance, r is height at converging transition entrance x.
4. efficiency spraying apparatus as described in claim 1, which is characterized in that the receiving chamber includes being connected to driving fluid entrance
Body cavity and the contraction section that is connected to the mixing chamber.
5. efficiency spraying apparatus as claimed in claim 3, which is characterized in that the actual internal area of receiving chamber's contraction section becomes
Change and uses this pungent base curves of Vito.
6. efficiency spraying apparatus as claimed in claim 5, which is characterized in that this pungent base curves equation of the Vito are as follows:
In formula, r0For contraction section outlet height, R is contraction section entrance height, and L is contraction section axial length, and x is apart from inlet
Distance, r is height at contraction section entrance x.
7. efficiency spraying apparatus as described in claim 1, which is characterized in that the sectional area of the mixing chamber is along fluid flow direction
Leading portion is shunk, and back segment is constant.
8. efficiency spraying apparatus as described in claim 1, which is characterized in that the diffuser casing is using actual internal area along fluid stream
The structure that dynamic direction is gradually increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821386261.1U CN209271716U (en) | 2018-08-27 | 2018-08-27 | A kind of efficiency spraying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821386261.1U CN209271716U (en) | 2018-08-27 | 2018-08-27 | A kind of efficiency spraying apparatus |
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| CN209271716U true CN209271716U (en) | 2019-08-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605077A (en) * | 2019-10-14 | 2019-12-24 | 昆山复希工程技术有限公司 | A toper membrane hole microchannel structure for improving gas-liquid mixture |
| CN112627780A (en) * | 2019-09-24 | 2021-04-09 | 中国石油化工股份有限公司 | Ejector |
-
2018
- 2018-08-27 CN CN201821386261.1U patent/CN209271716U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627780A (en) * | 2019-09-24 | 2021-04-09 | 中国石油化工股份有限公司 | Ejector |
| CN112627780B (en) * | 2019-09-24 | 2022-11-04 | 中国石油化工股份有限公司 | Ejector |
| CN110605077A (en) * | 2019-10-14 | 2019-12-24 | 昆山复希工程技术有限公司 | A toper membrane hole microchannel structure for improving gas-liquid mixture |
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