WO1980001468A1 - Element of a dryer for compressed air - Google Patents
Element of a dryer for compressed air Download PDFInfo
- Publication number
- WO1980001468A1 WO1980001468A1 PCT/CH1980/000001 CH8000001W WO8001468A1 WO 1980001468 A1 WO1980001468 A1 WO 1980001468A1 CH 8000001 W CH8000001 W CH 8000001W WO 8001468 A1 WO8001468 A1 WO 8001468A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- heat exchanger
- freon
- element according
- heat exchangers
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/022—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0041—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having parts touching each other or tubes assembled in panel form
Definitions
- the invention relates to a refrigeration dryer element for compressed air, each with at least one air-air heat exchanger and one air-freon heat exchanger, the heat exchangers having bent, nested tubes.
- Refrigeration dryers are increasingly used in connection with compressed air networks to remove the moisture from the air and thus complicated compressed air systems, e.g. Control and regulation systems to be able to operate trouble-free.
- the air compressed by a compressor is first pre-cooled and then fed at a temperature of approximately 30 ° C. to an air-air heat exchanger in which the air is cooled to approximately 12 ° C.
- the further cooling of the air takes place in an air-freon heat exchanger, in which a final temperature of the air of about 2 C is reached.
- the precipitated moisture is then separated in a separator connected to it.
- the moisture-free air enters the air-air heat exchanger and is used to cool the compressed air
- a known heat exchanger unit consists of an outer tube with an inner tube arranged coaxially therein, which is bent into a number of turns. To a small height, e.g. of two pipe diameters, it is necessary to arrange the heat exchanger in spirals. However, the production of heat exchanger units with spirally laid turns is difficult in terms of manufacturing technology and is therefore more complex than units with helically arranged pipe turns. For a given heat exchange unit output for the heat exchanger unit, however, the desired small overall height cannot be maintained for a given turn diameter in the case of a helical arrangement of the pipe turns. Although it is known to improve the heat exchange performance of two coaxial tubes by means of internals, this makes the heat exchanger unit complicated and expensive to manufacture.
- the invention is therefore based on the object of designing a refrigeration dryer of the type described at the outset such that, with the simplest construction of the heat exchanger unit, a helical arrangement of the pipe windings is possible while observing the heat exchange output, the pressure loss, the height and the winding diameter is.
- the air-air heat exchanger has an outer tube and at least three inner tubes and the air-freon heat exchanger has an outer tube and a coaxial inner have a tube with at least three inner tubes arranged in the coaxial inner tube with mutual line contact.
- 1 is a side view of two superimposed heat exchangers
- FIG. 2 is a plan view of the heat exchanger according to FIG. 1,
- FIG. 6 is a plan view in an enlarged view of the tube ends of an air-freon heat exchanger.
- the heat exchangers shown in FIGS. 1 and 2 are composed of an air-air heat exchanger 1 and an air-freon heat exchanger 2. Both heat exchangers 1, 2 have a turn length of one and a half turns. This ensures that when heat exchangers are stacked on top of each other, an intermediate space Z is created, through which the Interior space formed by the tube turns is accessible, which is advantageous in the manufacture of a refrigeration dryer.
- the air-air heat exchanger * is composed of an outer tube 3 and four inner tubes 4, but a different number of inner tubes 4 can also be used.
- the cooling air flows through the inner tubes 4, for example, and the air to be cooled flows in the interior between the outer tube 3 and the inner tubes 4.
- the air-freon heat exchanger has, see FIG. 4, an outer tube 3 with a coaxial inner tube 5.
- Four inner tubes 4 are arranged in the interior of the coaxial inner tube 5. It is essential here that the inner tubes 4 are in line with each other and with the inner wall of the coaxial inner tube 13. For example, the air to be cooled flows through the coaxial inner tube 5 and the inner tubes 4, while the freon flows in the annular space between the outer tube 3 and the coaxial inner tube 5.
- the two heat exchangers 1, 2 have straight connectors 6 at their ends of the winches, see FIG. 2. With these, the heat exchangers 1, 2 are connected to collectors. In Fig. 2 manifolds 8, 9 are schematically shown for the cooling air and the air to be cooled.
- a conical connecting support with a connecting pipe 12 connects to the connector 6, while the coaxial inner pipe 5 is connected directly to the collecting pipe 9. Since the one medium flows both in the inner tubes 4 and in the coaxial inner tube 5, only the coaxial inner tube 5 needs to be connected to the collecting tube 9; an undesirable risky and later inaccessible solder joint in the. Freon area. avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Drying Of Gases (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT900380A AT373385B (de) | 1979-01-12 | 1980-01-07 | Kaeltetrockner-element fuer komprimierte luft |
DK387880A DK387880A (da) | 1979-01-12 | 1980-09-11 | Koeletoerrer-element for komprimeret luft |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH323/79 | 1979-01-12 | ||
CH32379A CH635517A5 (de) | 1979-01-12 | 1979-01-12 | Kaeltetrockner-vorrichtung fuer komprimierte luft. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1980001468A1 true WO1980001468A1 (en) | 1980-07-24 |
Family
ID=4184395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1980/000001 WO1980001468A1 (en) | 1979-01-12 | 1980-01-07 | Element of a dryer for compressed air |
Country Status (9)
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982003270A1 (en) * | 1981-03-20 | 1982-09-30 | Akerman Gert Ake Elof | Heat exchanger |
EP0344351A1 (de) * | 1988-06-03 | 1989-12-06 | VIA Gesellschaft für Verfahrenstechnik mbH | Gas-Kältemittel-Wärmetauscher, insbesondere für Drucklufttrockner |
WO2005078369A1 (en) * | 2004-02-18 | 2005-08-25 | Renewability Energy Inc. | Helical coil-on-tube heat exchanger |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR410920A (fr) * | 1909-12-29 | 1910-06-02 | Gotthold Hildebrandt | Tuyauterie pour échangeurs de chaleur |
US2651508A (en) * | 1949-11-04 | 1953-09-08 | William M Bready | Heat exchange apparatus for liquids containing solids |
US3417547A (en) * | 1966-12-07 | 1968-12-24 | Gen Erie Corp | Method for drying compressed air |
US3722583A (en) * | 1971-02-22 | 1973-03-27 | Arrow Pneumatics Inc | Refrigerated air dryer |
CH589467A5 (en) * | 1973-10-09 | 1977-07-15 | Droogtech | Refrigeration drier of compressed gas - using concentric helically coiled heat exchanger and evaporator heat exchange tubes |
FR2344804A1 (fr) * | 1976-03-17 | 1977-10-14 | Fimec | Echangeur de recuperation thermique |
FR2348456A1 (fr) * | 1976-04-13 | 1977-11-10 | Lipets Adolf | Echangeur de chaleur a elements modulaires et son utilisation |
DE2654253A1 (de) * | 1976-11-30 | 1978-06-08 | Via Gmbh | Vorrichtung zur kaeltetrocknung von gas, insbesondere druckluft |
-
1979
- 1979-01-12 CH CH32379A patent/CH635517A5/de not_active IP Right Cessation
-
1980
- 1980-01-07 NL NL8020001A patent/NL8020001A/nl not_active Application Discontinuation
- 1980-01-07 DE DE80CH8000001T patent/DE3028621D2/de not_active Expired
- 1980-01-07 GB GB8029323A patent/GB2058328B/en not_active Expired
- 1980-01-07 WO PCT/CH1980/000001 patent/WO1980001468A1/de active Application Filing
- 1980-01-08 FR FR8000289A patent/FR2446459A1/fr active Granted
- 1980-01-09 IT IT19102/80A patent/IT1129951B/it active
- 1980-01-11 BE BE0/198945A patent/BE881123A/fr not_active IP Right Cessation
- 1980-09-08 SE SE8006234A patent/SE8006234L/ unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR410920A (fr) * | 1909-12-29 | 1910-06-02 | Gotthold Hildebrandt | Tuyauterie pour échangeurs de chaleur |
US2651508A (en) * | 1949-11-04 | 1953-09-08 | William M Bready | Heat exchange apparatus for liquids containing solids |
US3417547A (en) * | 1966-12-07 | 1968-12-24 | Gen Erie Corp | Method for drying compressed air |
US3722583A (en) * | 1971-02-22 | 1973-03-27 | Arrow Pneumatics Inc | Refrigerated air dryer |
CH589467A5 (en) * | 1973-10-09 | 1977-07-15 | Droogtech | Refrigeration drier of compressed gas - using concentric helically coiled heat exchanger and evaporator heat exchange tubes |
FR2344804A1 (fr) * | 1976-03-17 | 1977-10-14 | Fimec | Echangeur de recuperation thermique |
FR2348456A1 (fr) * | 1976-04-13 | 1977-11-10 | Lipets Adolf | Echangeur de chaleur a elements modulaires et son utilisation |
DE2654253A1 (de) * | 1976-11-30 | 1978-06-08 | Via Gmbh | Vorrichtung zur kaeltetrocknung von gas, insbesondere druckluft |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982003270A1 (en) * | 1981-03-20 | 1982-09-30 | Akerman Gert Ake Elof | Heat exchanger |
EP0344351A1 (de) * | 1988-06-03 | 1989-12-06 | VIA Gesellschaft für Verfahrenstechnik mbH | Gas-Kältemittel-Wärmetauscher, insbesondere für Drucklufttrockner |
WO2005078369A1 (en) * | 2004-02-18 | 2005-08-25 | Renewability Energy Inc. | Helical coil-on-tube heat exchanger |
US7322404B2 (en) | 2004-02-18 | 2008-01-29 | Renewability Energy Inc. | Helical coil-on-tube heat exchanger |
US8251133B2 (en) | 2004-02-18 | 2012-08-28 | Renewability Energy Inc. | Helical coil-on-tube heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
GB2058328B (en) | 1983-04-20 |
DE3028621D2 (en) | 1982-02-11 |
FR2446459B3 (US07709020-20100504-C00041.png) | 1981-10-16 |
SE8006234L (sv) | 1980-09-08 |
BE881123A (fr) | 1980-05-02 |
IT1129951B (it) | 1986-06-11 |
CH635517A5 (de) | 1983-04-15 |
NL8020001A (nl) | 1980-11-28 |
FR2446459A1 (fr) | 1980-08-08 |
GB2058328A (en) | 1981-04-08 |
IT8019102A0 (it) | 1980-01-09 |
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