CN1213237C

CN1213237C - Diffuser structure of turbocompressor

Info

Publication number: CN1213237C
Application number: CNB021207542A
Authority: CN
Inventors: 崔文畅; 徐光河; 金永宽; 智裕喆; 王大兴; 金会善
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2005-08-03
Anticipated expiration: 2022-05-31
Also published as: CN1461893A

Abstract

The present invention relates to a diffuser structure of a turbine compressor, which comprises an inducing impeller, an impeller, a passage, a scroll shell, a shell and a diffuser main body, wherein the diffuser main body is communicated with the inserted space of the impeller and the scroll shell and is positioned on the passage, the diffuser main body has certain thickness and width and forms a ring shape, one side of the passage in a diffuser is scraped into ringent opening scraped passages, and the inner side and the outer side of the diffuser main body are connected with a plurality of opening scraped passages; the side wall of the passage is in contact with the opening scraped passages of the diffuser main body to form a scraped passage P, and the arbitrary sections of the opening scraped passage are composed of lower straight parts which are formed by certain distance intervals and semi-circle parts which are respectively connected with both ends of each lower straight part of the arbitrary sections. The diffuser structure of the turbine compressor enhances the gas compression properties of the turbine compressor, so the present invention has the advantages of more simple structure, convenient processing and manufacturing cost reduction.

Description

The diffuser structure of turbocompressor

Technical field

The present invention relates to the diffuser structure field of turbocompressor

Background technique

In general the compressor of compressed fluid divides following several according to its compress mode: rotary compressor, reciprocal compressor, scroll compressor, turbocompressor etc.Compressor is by seal container and to be installed in seal container inner and produce the motor of driving force, and the structures such as compression member of utilizing the driving force of motor to carry out gas compression constitute.

In turbocompressor, the impeller that is rotated by motor force is positioned at pressing chamber, and the rotation by impeller sucks gas and compresses.

Fig. 1 represents the compression member of turbocompressor, as schemes representedly, and the compression member of turbocompressor is provided with pressing chamber 10, and pressing chamber connects with the suction passage F that is positioned at shell 100 inside and is connected.Insert the impeller 20 that can be rotated at pressing chamber 10, impeller 20 is connected with the motor that is arranged on shell 100 inside by running shaft 30.The inducer impeller inducer 1 that connects with suction passage F and gas is sucked is into arranged in the pressing chamber 10; The impeller insertion space 2 that connects inducer impeller inducer 1 and can insert impeller 20; Connecting impeller inserts space 2 and converts gas kinetic energy structures such as to the diffuser 3 of malleation and spiral case 4 and constitute.Between the inwall in impeller insertion space 2 and the impeller 20 blade 5 is arranged.

Impeller 20 is made of impeller hub 21 and the alar part 22 that is formed on impeller hub 21 outsides, and impeller is installed in impeller and inserts 2 the insides, space.

The process of carrying out the refrigerant compression 20 li of pressing chambers is as follows: at first, the driving force of motor makes impeller 20 rotations, the rotating force of impeller 20 makes gas enter inducer impeller inducer 1, the gas that enters inducer impeller inducer 1 inserts space 2 by impeller, the kinetic energy of its gas increases, the gas that kinetic energy increases is through diffuser 3 and spiral case 4 time, and its that part of kinetic energy that is increased converts malleation to, thereby pressure is increased.The gas that pressure increases is discharged by the exhaust port (not shown) that is connecting with spiral case 4.

Because the rotation of impeller 20, the diffuser 3 that the gas kinetic energy that is increased is converted to malleation has a lot of shapes.But diffuser 3 is represented as Fig. 2, is formed with the ring-type projecting surface 3b of certain altitude and width on the face of the diffuser channel 3a that connects impeller insertion space 2 and spiral case 4, and a plurality of baffle plate V at a distance of certain distance are arranged on its projecting surface 3b.

It is streamlined that baffle plate v becomes, and its two end part respectively become sharp keen film shape.

But, said structure has following shortcoming: in company with the gas of impeller 20 high speed rotating when being in the end of state of rest baffle plate v, the pressure that baffle plate and flowing gas produce interacts, not only can produce high frequency noise, and unstable gas by flowing between baffle plate v and the baffle plate v, therefore produce isolation phenomenon in the end of baffle plate v, the physical channel that gas can flow is narrowed down.

Have another shape of the existing diffuser of above-mentioned shortcoming, represented as Fig. 3, a plurality of scraping passages 41 of formation that keep at a certain distance away on the ring-type diffuser body of certain thickness and width are being arranged.Scraping passage 41 forms inlet 42 at diffuser body 40 inner peripheral surfaces, form outlet 43 at diffuser body 40 outer peripheral surfaces, and the each several part cross section of its scraping passage 41 is big or small inequality.

Impeller 20 is positioned at the inside of diffuser body 40.

Tubulose diffuser body 40 is when impeller 20 is rotated, and the rotating force of impeller 20 flows gas, and its gas passes through the scraping passage 41 of diffuser body 40, thereby malleation is increased, and discharges through spiral case 4.

Though tubulose diffuser body 40 superior performances of this structure, but because a plurality of scraping passages 41 that perforation diffuser body 40 is formed with not only become certain angle of inclination, and the cross-sectional sizes of each several part is all different, and therefore processing is relatively more difficult, has increased manufacture cost.

Summary of the invention

Technical problem to be solved by this invention is, a kind of diffuser structure of turbocompressor is provided, and its gas compression performance is good, easy to process.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is, is used for connecting impeller and inserts space and spiral case, and be positioned at the diffuser body on the passage, and the diffuser body has certain thickness and width and circlewise; Have a side of scraping passage to become ringent opening scraping passage in the diffuser, a plurality of opening scraping passages connect the diffuser body inboard and the outside; Channel side wall contacts and forms scraping passage P with the opening scraping passage of diffuser body.

The arbitrary section of described opening scraping passage be the following line part that forms by the distance certain intervals and be connected separately its down the half-round at the two ends of line part constitute.

The last line part of described scraping passage P is a sidewall of flow channels.

Its cross section of described opening scraping passage is the elliptical shape of a side opening.

The invention has the beneficial effects as follows: improve the gas compression performance, make structure simpler, easy to process, reduce manufacture cost.

Description of drawings

Fig. 1 represents to be provided with the turbocompressor compression member sectional drawing of existing diffuser structure.

Fig. 2 represents diffuser structure one embodiment's of existing turbocompressor front elevation.

Fig. 3 represents another embodiment's of diffuser structure of existing turbocompressor front elevation.

Fig. 4 represents the turbocompressor sectional view that is provided with the diffuser structure of turbocompressor according to of the present invention.

Fig. 5 represents according to turbocompressor front elevation of the present invention.

Fig. 6 represents the front elevation according to Tubocompressor diffuser one embodiment of the present invention.In the drawings:

1. inducer impeller inducer 2. impellers insert space 3. diffusers

3a. diffuser channel 3b. ring-type protrusion surface 4. spiral cases

5. blade 6. flow channels 6a. conduit walls

10. pressing chamber 20. impellers 21. impeller hubs

22. alar part 30. running shafts 40. diffuser bodies

41. scraping passage 42. inlets 43. outlets

50. line part under the diffuser body 51. opening scraping passage 51a.

51b. half-round 52. inlets 53. outlets

100. shell p. scraping passage f. suction passage

V. baffle plate

Embodiment

Be described in further detail below in conjunction with the diffuser structure of the drawings and specific embodiments to turbocompressor of the present invention: Fig. 4 represents to be provided with the turbocompressor compression member of the diffuser structure of the turbocompressor that proposes among the present invention.The turbocompressor compression member is provided with the pressing chamber 10 that is connecting with suction passage F in shell 100 inside, and the impeller 20 that can be rotated inserts the inside that is arranged on pressing chamber 10.Impeller 20 connects with the motor that is arranged on shell 100 inside by running shaft 30.

Pressing chamber 10 is made of following structure: connect connection with suction passage F, and the inducer impeller inducer 1 that gas is entered, connect the impeller insertion space 2 that inducer impeller inducer 1 can insert rotary blade 2, be formed on impeller and insert space 2 spiral case 4 on every side, connect the flow channels 6 in spiral case 4 and impeller insertion space 2 etc.Its impeller inserts between space 2 inwalls and the impeller 20 and is connected with blade 5.

Impeller 20 is made of impeller hub 21 and the alar part 22 that is formed on impeller hub 21 outsides, and impeller inserts and is arranged on impeller insertion 2 the insides, space.

In the flow channels 6 of pressing chamber, be provided with diffuser.Diffuser such as Fig. 5 are represented to be made of following structure: be used for connecting impeller and insert space and spiral case, and be positioned at the diffuser body 50 on the flow channels 6, diffuser body 50 has certain thickness and width and circlewise; Have a side to become ringent opening scraping passage 51 in the diffuser, a plurality of opening scraping passages 51 connect the diffuser body inboard and the outside; Channel side wall 6a contacts and forms scraping passage P with the opening scraping passage of diffuser body 50.Be that diffuser body 50 is positioned on the flow channels 6, impeller 20 then is positioned at the inside of its diffuser body 50.The opening of the opening scraping passage 51 of diffuser body 50 contact with a sidewall 6a among the two side that constitutes flow channels 6, and the sidewall 6a by its flow channels 6 and opening scraping passage 51 formation of diffuser body 50 make the scraping passage P of gas flow.

The arbitrary section of opening scraping passage 51 be the following line part 51a that forms by the distance certain intervals and be connected separately its down the half-round 51b at the two ends of line part 51a constitute.

The last line part of scraping passage P is a sidewall 6a of flow channels 6.

The opening scraping passage 51 that is formed on the diffuser body 50 forms inlet 52 on the inner peripheral surface of its diffuser body 50.Export 53 and on the outer peripheral surface of its diffuser body 50, form.For pass through openings 52 and outlet 53, be the groove that benchmark is formed slopely a side opening with the vertical or horizontal line of diffuser body 50.

Cross section on the arbitrary position of its opening scraping passage 51 is by: line part 51a and prolongs the half-round 51b and the half-round 51b openings at two ends that form separately with semi-circular shape constitute on its two ends.It should be noted that the size of its size that exports 53 sides greater than inlet 52 sides.

Represented as Fig. 6, Fig. 6 has expressed according to another embodiment of the invention.Be formed at a plurality of opening scraping passages 51 its cross sections on the diffuser body 50 and become the elliptical shape of a side opening.

Below, effect and effect according to the diffuser structure of turbocompressor of the present invention are carried out following explanation.

At first, the rotating force of the motor of turbocompressor is communicated in the impeller 20 by running shaft, and impeller 20 is rotated, and the rotating force gas by impeller 20 enters inducer impeller inducer 1 place.When the gas that enters its inducer impeller inducer 1 place inserts space 2 by impeller, its kinetic energy increases, the gas that kinetic energy increases is after the scraping passage p that forms through a plurality of opening scraping passages 51 and passage one sidewall 6a by diffuser body 50, flow to spiral case 4, thereby make kinetic energy convert positive pressure to, reach the purpose that pressure rises.The gas that its pressure rises is discharged by connecting the exhaust port (not shown) that is connected with its spiral case 4.

The present invention is by being formed on the scraping passage p that opening scraping passage 51 on the diffuser body 50 and the passage one sidewall 6a that contacts with opening scraping passage 51 constitute diffuser.Therefore, improved the performance that gas pressure is risen.

And the scraping passage p that gas is passed through forms according to the open channel 51 of diffuser body 50 and passage one sidewall 6a, and therefore, the open channel 51 one sides of its diffuser body 50 form opening slot.Therefore, its manufacturing procedure and processing structure are very simple.

Claims

1. the diffuser structure of a turbocompressor, this turbocompressor comprises inducer impeller inducer (1), impeller (20), flow channels (6), spiral case (4), shell (100) and is used for connecting impeller inserts space and spiral case, and be positioned at the diffuser body (50) on the passage (6), it is characterized in that: the diffuser body (50) of the diffuser structure of turbocompressor has certain thickness and width and circlewise; Have a side to become ringent opening scraping passage (51) in the diffuser, a plurality of opening scraping passages (51) connect the diffuser body inboard and the outside; Channel side wall (6a) contacts and forms scraping passage (P) with the opening scraping passage (51) of diffuser body (50).

2. the diffuser structure of turbocompressor according to claim 1 is characterized in that: the arbitrary section of opening scraping passage (51) be the following line part (51a) that forms by the distance certain intervals and be connected separately its down the half-round (51b) at the two ends of line part (51a) constitute.

3. the diffuser structure of turbocompressor according to claim 2, it is characterized in that: the last line part of scraping passage (P) is a sidewall (6a) of flow channels (6).

4. the diffuser structure of turbocompressor according to claim 1, it is characterized in that: its cross section of opening scraping passage (51) is the elliptical shape of a side opening.