WO2025146232A1 - Procédé et dispositif de nettoyage automatisé d'échangeurs de chaleur refroidis par air au moyen d'un dispositif de nettoyage à entraînement fluidique - Google Patents

Procédé et dispositif de nettoyage automatisé d'échangeurs de chaleur refroidis par air au moyen d'un dispositif de nettoyage à entraînement fluidique Download PDF

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Publication number
WO2025146232A1
WO2025146232A1 PCT/DE2024/000101 DE2024000101W WO2025146232A1 WO 2025146232 A1 WO2025146232 A1 WO 2025146232A1 DE 2024000101 W DE2024000101 W DE 2024000101W WO 2025146232 A1 WO2025146232 A1 WO 2025146232A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
cross member
portal unit
guide carriage
heat exchanger
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/DE2024/000101
Other languages
German (de)
English (en)
Inventor
Jens-Werner Kipp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mycon GmbH
Original Assignee
Mycon GmbH
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 by Mycon GmbH filed Critical Mycon GmbH
Publication of WO2025146232A1 publication Critical patent/WO2025146232A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/02—Supports for cleaning appliances, e.g. frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/04—Feeding and driving arrangements, e.g. power operation

Definitions

  • Heat exchangers however, quickly become dirty due to various environmental influences that may be present at their locations. For example, sand, dust, pollen, and other suspended particles in the environment can deposit on the heat exchangers. Such contamination quickly forms an insulating layer that negatively affects heat transfer in the heat exchanger, significantly reducing its energy efficiency and increasing energy costs, for example for air conditioning. In addition, the contamination reduces the amount of air forced or drawn through the spaces between the finned tubes. This leads to a further reduction in cooling capacity. In addition, the Corrosion of the contaminated heat exchanger components caused by such contamination leads to a reduction in the operating time of the devices.
  • Heat exchangers therefore depends to a large extent on the cleanliness of the heat exchanger surfaces.
  • Heat exchangers are currently mostly cleaned using chemicals (so-called spraying methods).
  • Compressed air is often used in addition to or after cleaning.
  • Such methods are often unsatisfactory in terms of cleaning results and are also harmful to the environment and employees.
  • WO 2018/077326 A1 a process is known which is used for the purification of special design into a compressed air stream.
  • the required water quantity is usually only 30-90 l per operating hour, depending on the application and the jet nozzle used.
  • the high cleaning power is primarily due to the cavitation effect when the jet hits the surface to be cleaned. This cleaning power removes even oil and grease without the need for any additives.
  • Possible applications are primarily in the area of cleaning sensitive surfaces such as finned heat exchangers.
  • This process is also automated for larger heat exchanger surfaces. Usually 3-4 jet nozzles are used simultaneously, resulting in a jet width of approx. 500 mm.
  • a fully automated version has an electronic control system (PLC).
  • PLC electronic control system
  • the electronic control system allows a selection of several cleaning programs. The appropriate cleaning program can then be selected depending on the degree of contamination.
  • the arfindunasnamäßp Varfahran comes from van ainam Varfahran 1 ir ai itnmati i rt n it is moved in at least two directions substantially parallel to the plane of the heat exchanger such that the surface of the heat exchanger to be cleaned can be partially or completely cleaned.
  • the guide carriage which extends across the entire length of the heat exchanger, allows for precise yet simple jet nozzle movements.
  • the jet nozzle movements are carried out by a guide carriage, which is advantageously movable along two axes. The movements of the guide carriage allow at least one jet nozzle to sweep over the section of the heat exchanger covered by the gantry unit, allowing the jet nozzle to clean this section, for example, line by line.
  • the guide carriage can run in one direction, for example transverse to the length of the heat exchanger, directly along a guide crossbar, which acts as a linear guide to move the jet nozzle linearly.
  • this guide crossbar can then be moved within the gantry unit.
  • a particular advantage here is that, due to the simple Cartesian movement possibilities of the jet nozzle, these movements do not require complex drive and control devices, e.g., of an electrical nature, but can be implemented quite easily using fluidic and, in particular, pneumatic means.
  • Such fluidic and, in particular, pneumatic drives are particularly robust and can be operated safely, even over extended periods, even under difficult environmental conditions, in which heat exchangers frequently operate and, of course, must also be cleaned, and they require little maintenance.
  • Another advantage is that, due to the cleaning of the heat exchangers using compressed air and water, the compressed air medium must be present at the heat exchangers anyway, thus eliminating the need for an additional power supply for the cleaning device.
  • FIG. 2 - a schematic device according to Figure 1 when cleaning a
  • Figure 6 - a variant of the device according to Figure 1 with drive of the guide carriage by means of a pneumatic motor.
  • FIG. 1 shows a schematic representation of a possible embodiment of the device according to the invention, in which a cleaning device 1 for a surface of a heat exchanger 15, located here in the plane of the drawing, is shown.
  • the cleaning device consists of a frame 2 that extends essentially over the entire surface of the heat exchanger 15. Within the area covered by the frame and via guides 23, which will be explained later. Covered area, which represents the working area of a guide carriage 5, which will be explained in more detail later.
  • a single jet nozzle 3, known per se can be seen on the guide carriage 5, which is intended to clean the surface of the heat exchanger 15 with water and compressed air.
  • the guide carriage 5 performs mutually perpendicular movements 17, 18 and can thus cover the entire working space within the portal unit 6 in a manner explained later.
  • the guide carriage 5 For the movement of the guide carriage 5 along the direction of movement 17, the guide carriage 5 is mounted in a manner only indicated on a guide cross member 4 so as to be movable and linearly displaceable, for example with the aid of a roller guide or similar bearing.
  • the guide cross member 4 extends essentially from the lower strut of the frame 2 to the upper strut of the frame 2 and is movably held in the direction of movement 18 within the gantry unit 6 by means of guides 23, 24, as explained below.
  • the guide carriage 5 is shown in a middle position of this lifting movement, in Figure 2 the guide carriage 5 is in the area of the upper end position and in Figure 3 in the area of the lower end position.
  • the guide carriage 5 and thus the jet nozzle 3 are moved by retracting and extending the cylinder rod 27 along the guide cross member 4 from bottom to top in the direction of movement 17 and can thereby clean a partial area of the surface of the heat exchanger 15 in the working area of the portal unit 6 in a gap-like manner.
  • a one-sided operating the return stroke of the guide carriage 5 can be effected via the weight load of the guide carriage 5 itself or, if necessary, an additional weight can be attached which moves the guide carriage 5 back into its lower end position and the cylinder rod 27 into its retracted position in the pneumatic cylinder 7.
  • a pneumatic motor 9 (only indicated) can be seen on the lower crossbar of the frame 2.
  • This motor can move the entire portal unit 6 along the direction of movement 22 via a winch and a cable 19, thus ensuring that the working area below the portal unit 6 can be moved across the entire heat exchanger 15.
  • this adjustment primarily serves to roughly position the portal unit 6 above the heat exchanger 15; the movement of the guide carriage 5 for the actual cleaning of the heat exchanger 15 is described below.
  • a mechanical forced guide is arranged at the top and bottom of the portal unit 6 for executing the feed movement in the feed direction 18, which is carried out with the aid of a toothed rail 11.
  • the toothed rail 11 has, as can be better seen in Figures 4a and 4b, a type of toothing with guide bevels 21, which are intended for interaction with rollers 10 on the guide carriage 5. If the guide carriage 5 moves into one of its end positions during the cleaning movement in the direction of movement 17, the roller 10 arranged on the guide carriage 5 comes into the area of the toothed rail 11 and, as can be seen in Figure 4a, encounters the guide bevel 21.
  • the stroke to be carried out of the guide carriage 5 and the jet nozzle 3 is carried out slightly offset from the previous path of the guide carriage 5 and the jet nozzle 3, wherein the toothing width of the toothed rail 11 should be selected such that the working area of the jet nozzle 3 here overlaps the previous path of the guide carriage 5 and the jet nozzle 3 and the surface of the heat exchanger can be covered without gaps.
  • the guide carriage 5 and the jet nozzle 3 now reach the opposite end of their movement, the process described above is again carried out on the corresponding serrated strip 11.
  • the lower and upper serrated strips 11 should be offset from one another in the feed direction, advantageously by half a tooth width, so that the guide carriage 5 and thus the jet nozzle 3 can again move forward in the feed direction 18.
  • the guide cross member 4 can gradually advance within the area of the heat exchanger 15 covered by the portal unit, as can be seen more clearly when comparing Figures 2 and 3.
  • the guide cross member 4 can be moved back to a home position by a return carriage 12, which can also be pneumatically actuated, for example, and is connected to the gantry unit 6 by means of a cable pull 13.
  • a toggle switch 14 or rocker is attached to this return carriage 12, which flips over and is activated as soon as the guide cross member 4 reaches its end position within the gantry unit 6.
  • Figure 5 shows an embodiment of the device according to Figure 1, which is equipped with a double-acting pneumatic cylinder 7 for a back-and-forth movement of the guide carriage 5, even for applications in which the heat exchanger is essentially horizontally aligned and a return movement of the guide carriage 5 under the influence of gravity is not possible.
  • separate deflection pulleys 16, 26 and cables 8, 25 are provided on the double-acting pneumatic cylinder 7 for both directions of movement of the guide carriage 5, which are arranged such that the guide carriage 5 is virtually clamped between them and moves parallel to the movement of the pneumatic cylinder 7 along the guide cross member 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour le nettoyage automatisé d'échangeurs de chaleur (15) refroidis par air au moyen d'un dispositif de nettoyage (1), une buse à jet (3) maintenue mobile sur le dispositif de nettoyage (1) étant orientée dans au moins deux directions (17, 18) sensiblement parallèlement au plan de l'échangeur de chaleur (15) de sorte que la surface à nettoyer de l'échangeur de chaleur (15) peut être partiellement ou complètement nettoyée, dans lequel le dispositif de nettoyage (1) présente un châssis (2) qui le recouvre et sur lequel en ensemble portique (6) pour la buse de projection (3) est disposé de manière mobile, que les mouvements de l'ensemble portique (6) peuvent recouvrir au moins des zones partielles de l'échangeur de chaleur (15) à nettoyer et les atteindre pour le nettoyage, et qu'un chariot de guidage (5) est disposé de manière mobile à l'intérieur de l'ensemble portique (6) de sorte que les mouvements (17, 18) du chariot de guidage (5) pour la buse de projection (3) balayent la zone partielle de l'échangeur de chaleur (15) recouverte par l'ensemble portique (6) et la buse à jet (3) peut alors nettoyer cette zone partielle, tous les mouvements (17, 18) de l'ensemble portique (6) et du chariot de guidage (5) pouvant être commandés et/ou entraînés par un fluide, de préférence par voie pneumatique.
PCT/DE2024/000101 2024-01-06 2024-12-29 Procédé et dispositif de nettoyage automatisé d'échangeurs de chaleur refroidis par air au moyen d'un dispositif de nettoyage à entraînement fluidique Pending WO2025146232A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102024000039.9A DE102024000039B4 (de) 2024-01-06 2024-01-06 Verfahren und Vorrichtung zur automatisierten Reinigung von luftgekühlten Wärmetauschern mittels einer fluidisch angetriebenen Reinigungseinrichtung
DE102024000039.9 2024-01-06

Publications (1)

Publication Number Publication Date
WO2025146232A1 true WO2025146232A1 (fr) 2025-07-10

Family

ID=94393996

Family Applications (1)

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PCT/DE2024/000101 Pending WO2025146232A1 (fr) 2024-01-06 2024-12-29 Procédé et dispositif de nettoyage automatisé d'échangeurs de chaleur refroidis par air au moyen d'un dispositif de nettoyage à entraînement fluidique

Country Status (2)

Country Link
DE (1) DE102024000039B4 (fr)
WO (1) WO2025146232A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060037736A1 (en) * 2004-08-17 2006-02-23 Heyman Keith A Heat exchange coil cleaning apparatus
WO2018077326A1 (fr) 2016-10-31 2018-05-03 Mycon Gmbh Agencement d'installation et procédé de nettoyage automatique d'échangeurs de chaleur à lamelles
CN111256518A (zh) * 2018-11-30 2020-06-09 青岛海高设计制造有限公司 一种空调器自清洗系统及空调器
CN111256519A (zh) * 2018-11-30 2020-06-09 青岛海高设计制造有限公司 一种空调器自清洗系统及空调器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1037634C2 (nl) * 2010-01-20 2010-10-19 Montagebedrijf Terneuzen B V Inrichting voor het reinigen van een warmtewisselaar.
DE102015010623B4 (de) * 2015-08-14 2017-04-13 Armin F. Khadjavi Reinigungsvorrichtung und Verfahren zur Reinigung für luftgekühlte Wärmetauscher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060037736A1 (en) * 2004-08-17 2006-02-23 Heyman Keith A Heat exchange coil cleaning apparatus
WO2018077326A1 (fr) 2016-10-31 2018-05-03 Mycon Gmbh Agencement d'installation et procédé de nettoyage automatique d'échangeurs de chaleur à lamelles
CN111256518A (zh) * 2018-11-30 2020-06-09 青岛海高设计制造有限公司 一种空调器自清洗系统及空调器
CN111256519A (zh) * 2018-11-30 2020-06-09 青岛海高设计制造有限公司 一种空调器自清洗系统及空调器

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DE102024000039B4 (de) 2026-01-22
DE102024000039A1 (de) 2025-07-10

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