PL70128B2 - - Google Patents

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Publication number
PL70128B2
PL70128B2 PL15286772A PL15286772A PL70128B2 PL 70128 B2 PL70128 B2 PL 70128B2 PL 15286772 A PL15286772 A PL 15286772A PL 15286772 A PL15286772 A PL 15286772A PL 70128 B2 PL70128 B2 PL 70128B2
Authority
PL
Poland
Prior art keywords
inlet
knee
fan
partition
vibrations
Prior art date
Application number
PL15286772A
Other languages
Polish (pl)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to PL15286772A priority Critical patent/PL70128B2/pl
Publication of PL70128B2 publication Critical patent/PL70128B2/pl

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Pierwszenstwo: 11.01.1972 (P. 152 867) Zgloszenie ogloszono: 30.05.1973 Opis patentowy opublikowano:. 10.04.1974 KI. 27c, 7/04 MKP' F04d 19/00 CZYTELNIA Urzedy Pofentower ftlSklDJ b8«ftW?3lit*| Lt.: Twórcywynalhzku: Jan Radwanski, Justyn Polok Uprawniony z patentu tymczasowego: Fabryka Wentylatorów, Chelm Slaski (Polska) Wentylator z wlotem kolanowym Przedmiotem wynalazku jest wentylator posiadajacy wlot kolanowy.Znane sa wentylatory i dmuchawy wykonywane z wlotami kolanowymi. Dotychczasowe rozwiazania kon¬ strukcyjne nie przewiduja przegrody we wlotach kolanowych, (fig. 1A i IB) Gaz przeplywajacy przez wlot kolanowy na wirnik wentylatora lub dmuchawy zmienia kierunek przeplywu najczesciej o 90°, wskutek czego powstaja straty cisnienia, zmiany rozkladu predkosci przed wirnikiem oraz drgania strumienia gazów. Drgania te wytwarzaja szum o wysokiej czestotliwosci z cyklicznie zmieniajaca sie amplituda, bardzo uciazliwy dla otocze¬ nia oraz szkodliwy dla ukladu mechanicznego czesci wirujacych wentylatora. Powyzsze zjawisko powoduje równiez wahania cisnienia wytwarzane przez wentylator wokól pewnej sredniej wartosci.Istota wynalazku polega na zastosowaniu we wlocie kolanowym przegrody zabudowanej pod katem ostrym O < uzyskuje sie bardziej prawidlowy rozklad predkosci przed wirnikiem wentylatora przy jednoczesnym wyelimino waniu drgan strumienia gazów. Zmniejsza sie przez to niepozadany szum wentylatora, polepszaja sie wlasnosci przeplywowe oraz dynamiczne. Przedmiot wynalazku jest przedstawiony w przykladzie wykonania na rysunku fig. 2.W dolnej czesci wlotu kolanowego 1 umieszczona jest przegroda 2 pod katem \p, której ksztalt jest zgodny z zarysem przekroju podluznego wlotu kolanowego 1. Polozenie zas wlotu kolanowego 1 zalezy od warunków instalacji i moze byc prostopadle lub pod katem a w stosunku do pionu. PL PLPriority: January 11, 1972 (P. 152 867) Application announced: May 30, 1973 The patent description was published :. April 10, 1974 KI. 27c, 7/04 IPC 'F04d 19/00 READING ROOM Offices Pofentower ftlSklDJ b8 «ftW? 3lit * | Lt .: Twórcywynalhzku: Jan Radwanski, Justyn Polok Authorized by the provisional patent: Fan Factory, Chelm Slaski (Poland) Fan with a knee inlet The subject of the invention is a fan with a knee inlet. Fans and blowers with knee inlets are known. The current design solutions do not provide for a partition in the knee inlets, (Fig. 1A and IB) The gas flowing through the knee inlet to the fan or blower impeller changes the direction of flow, usually by 90 °, which results in pressure losses, changes in the speed distribution upstream of the impeller and vibrations. gas stream. These vibrations generate high-frequency noise with cyclically changing amplitude, very burdensome for the environment and harmful to the mechanical system of the rotating parts of the fan. The above phenomenon also causes pressure fluctuations generated by the fan around a certain average value. The essence of the invention consists in the use of a partition in the knee inlet with an acute angle O <, a more correct speed distribution in front of the fan impeller is obtained while at the same time eliminating the vibrations of the gas stream. As a result, the undesirable fan noise is reduced, the flow and dynamic properties are improved. The subject matter of the invention is shown in the embodiment in Fig. 2. In the lower part of the knee inlet 1 there is a partition 2 at the angle \ p, the shape of which corresponds to the outline of the longitudinal section of the knee inlet 1. The position of the elbow inlet 1 depends on the installation conditions and it may be perpendicular or at an angle to the vertical. PL PL

Claims (3)

1. Z as t r z e zenia p a t e nt owe 1. Wentylator z wlotem kolanowym, znamienny tym, ze we wlocie (1) znajduje sie przegroda (2).1. P a t e n a t s e ctio ns 1. Fan with a knee inlet, characterized in that in the inlet (1) there is a partition (2). 2. Wentylator wedlug zastrz. 1, znamienny tym, ze przegroda (2) umieszczona we wlocie (1) jest usytuowana pod katem ostrym2. Fan according to claim 3. The method of claim 1, characterized in that the partition (2) located in the inlet (1) is located at an acute angle 3. Wentylator wedlug zastrz. 1, znamienny tym, ze polozenie przegrody we wlocie jest niezalezne od poloze¬ nia wlotu kolanowego.KI. 27c,7/04 70128 MKP F04d 19/00 A-A *ys. 1A Rys. 1R Rys.2 Prac. Poligraf. UP PRL. zam. 163/74 naklad 120+18 Cena 10 zl PL PL3. Fan according to claim A method as claimed in claim 1, characterized in that the position of the partition in the inlet is independent of the position of the knee inlet. 27c, 7/04 70128 MKP F04d 19/00 A-A * ys. 1A Fig. 1R Fig. 2 Work. Typographer. UP PRL. residing 163/74 edition 120 + 18 Price PLN 10 PL PL
PL15286772A 1972-01-11 1972-01-11 PL70128B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15286772A PL70128B2 (en) 1972-01-11 1972-01-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL15286772A PL70128B2 (en) 1972-01-11 1972-01-11

Publications (1)

Publication Number Publication Date
PL70128B2 true PL70128B2 (en) 1974-02-28

Family

ID=19957068

Family Applications (1)

Application Number Title Priority Date Filing Date
PL15286772A PL70128B2 (en) 1972-01-11 1972-01-11

Country Status (1)

Country Link
PL (1) PL70128B2 (en)

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