EP0623788A1 - Refroidisseur d'air - Google Patents

Refroidisseur d'air Download PDF

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Publication number
EP0623788A1
EP0623788A1 EP94107231A EP94107231A EP0623788A1 EP 0623788 A1 EP0623788 A1 EP 0623788A1 EP 94107231 A EP94107231 A EP 94107231A EP 94107231 A EP94107231 A EP 94107231A EP 0623788 A1 EP0623788 A1 EP 0623788A1
Authority
EP
European Patent Office
Prior art keywords
air
cooler according
housing
air cooler
grille
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.)
Granted
Application number
EP94107231A
Other languages
German (de)
English (en)
Other versions
EP0623788B1 (fr
Inventor
Paul Jyrek
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.)
Kueba Kaltetechnik GmbH
Original Assignee
Kueba Kaltetechnik 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 Kueba Kaltetechnik GmbH filed Critical Kueba Kaltetechnik GmbH
Publication of EP0623788A1 publication Critical patent/EP0623788A1/fr
Application granted granted Critical
Publication of EP0623788B1 publication Critical patent/EP0623788B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the invention relates to an air cooler for generating a cooling air flow, consisting of a housing having an air inlet and an air outlet, in which a cooling pipe arrangement is provided, at least one fan driven by an electric motor, which is arranged in the flow direction of the air behind the cooling pipe arrangement. and an air grille arrangement provided at the air outlet.
  • Air coolers of this type are known and generally have an axial or radial blower or a plurality of such blowers in circular recesses in a housing wall, which blowers are covered by protective grille arrangements with generally low air conduction.
  • a disadvantage of the known air coolers is that the throw of the cold air flow and the distribution uniformity leave something to be desired, particularly for special applications.
  • the object of the invention is therefore to provide an air cooler of the type mentioned at the outset which enables the generation of a far-reaching cooling air flow of a selectable cross-sectional shape and - based on the flow speed and direction of exit - a homogeneous flow profile.
  • the fan is arranged in an opening in an intermediate wall, which divides the housing into an upstream heat exchanger chamber containing the cooling tube arrangement and an downstream pressure chamber with at least one air baffle arrangement arranged at a distance from the fan.
  • the division of the housing and the resulting formation of a separate pressure chamber ensures that reduce or calm the inhomogeneous pressure and / or flow conditions in the pressure chamber in the area of the blower or blowers.
  • an essentially constant dynamic pressure is established in the pressure chamber, as a result of which pressure conditions are largely constant over the entire pressure chamber side surface of the air grille arrangement, which lead to a homogeneous outlet flow behind the air grille arrangement with respect to the direction and speed distribution.
  • the air cooler according to the invention thus has an advantageously directed and far-reaching cooling air flow of selectable cross-sectional shape.
  • a particularly favorable embodiment of the invention which leads to a high degree of variability in the possible uses, is characterized in that the part of the housing forming the pressure chamber is designed as a separate part which can be fitted with air guiding grilles in different ways. In this way, the required outflow characteristics of the air cooler can be easily adapted to the respective requirements and practical conditions.
  • air grille elements can generally have any shape whatsoever, in practice rectangular air grille elements are preferred which can extend over the entire width of the front and / or rear wall.
  • the provision of an air outlet with a total air outlet area smaller than the air intake surface of the blower can increase the flow velocity at the air outlet.
  • an air cooler 10 consists of a housing 12, which is rectangular in longitudinal section and has an air inlet opening 14, via which outside air, as indicated by arrows, can reach the housing 12 essentially over the entire opening area.
  • a cooling tube arrangement 18 which consists of a cooling tube 20 which is guided several times from one end wall 22 of the housing 12 to the other end wall 24 and whose tube start 26 or tube end 28 is led out through the end walls 22 or 24 of the housing 12 and there a coolant circuit containing a coolant source can be coupled.
  • an intermediate wall 30 extends above the cooling tube arrangement 18 essentially parallel to the air inlet opening 14 through the housing 12, which has a circular disk-shaped opening 32 in its center, in which the housing 36 of an electric motor 38 of a blower 40 is held via struts 34.
  • the blower 40 has a fan blade arrangement 42, the diameter of which corresponds approximately to the diameter of the opening 32 of the intermediate wall 30.
  • the front wall 47 shown in FIG. 1 is provided in the area of the pressure chamber 46 with an air guide grille element 50, which has square, grid-shaped individual openings 52 which have a predeterminable depth extent and thereby produce a well-directed, far-reaching air flow.
  • the air grille element 50 extends essentially over the entire width of the front wall 47 and over part of the height of the pressure chamber 46.
  • a corresponding air grille element 50 ′ can be provided on the rear wall 48 of the housing 12, as shown in FIG. 2.
  • the air grille elements 50, 50 ′ arranged opposite one another can have different shapes or sizes, and it is also possible, as an alternative or in addition, to integrate an air outlet grille into the top wall 44 of the housing 12.
  • the recesses in the pressure chamber walls intended to accommodate the air grille arrangements can be closed with suitable cover elements, if only a one-sided blow-out direction is required.
  • the pressure chamber which is located above the intermediate wall 30, can expediently be designed as a separate housing part and designed to be removable overall, so that housing parts with different air guide grille arrangements can be provided preassembled and used as required.
  • the configuration of the pressure chamber housing part as a separate one Housing part also has the advantage that the blower (40) is easily accessible for any maintenance work.
  • further fans can also be provided in the intermediate wall (30) of the air cooler (10).
  • a cooling medium flows through the cooling tube arrangement 20, the air sucked in by the blower 40 being cooled due to the heat exchange occurring when flowing through the cooling tube arrangement 18 and entering the pressure chamber 46.
  • the cooled air flows around the electric motor 38 and thereby contributes in a desired manner to the cooling of this electric motor 38 and thus to an increase in its service life.
  • the cold air stream entering via the opening 32 is calmed down, and a certain dynamic pressure is formed in this pressure chamber 46.
  • an essentially homogeneous cold air admission pressure is applied to the air guide grille elements 50, 51 which determine the air outlet area, which leads to a uniform application of these air guide grille elements over their entire surface and has the result that a rectified, homogeneous cooling air flow is obtained on the outlet side, which is pronouncedly directed is and leads to surprisingly large cooling air throwing distances.
  • cooling air streams of the desired cross-section and corresponding cooling air throw can be generated, in particular by selecting and arranging the air grille elements and dimensioning them while maintaining the other basic structure of the air cooler a variety of practical requirements can be optimally taken into account.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
EP94107231A 1993-05-07 1994-05-09 Refroidisseur d'air Expired - Lifetime EP0623788B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9306969U DE9306969U1 (fr) 1993-05-07 1993-05-07
DE9306969U 1993-05-07

Publications (2)

Publication Number Publication Date
EP0623788A1 true EP0623788A1 (fr) 1994-11-09
EP0623788B1 EP0623788B1 (fr) 1998-09-16

Family

ID=6893009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107231A Expired - Lifetime EP0623788B1 (fr) 1993-05-07 1994-05-09 Refroidisseur d'air

Country Status (3)

Country Link
EP (1) EP0623788B1 (fr)
DE (2) DE9306969U1 (fr)
ES (1) ES2122081T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6963758B2 (en) 2000-09-29 2005-11-08 Ntt Docomo, Inc. High-sensitivity wireless receiving device and high-frequency unit used therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440026B (zh) * 2016-08-01 2022-05-13 奥克斯空调股份有限公司 一种壁挂式空调
CN106287947B (zh) * 2016-08-01 2022-03-01 奥克斯空调股份有限公司 一种壁挂式空调

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057681A (fr) * 1952-06-04 1954-03-10 Carrier Soc Conditionneur d'air pour appartements
FR2145735A1 (fr) * 1971-07-14 1973-02-23 Boehler Zenkner Stroemtech

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057681A (fr) * 1952-06-04 1954-03-10 Carrier Soc Conditionneur d'air pour appartements
FR2145735A1 (fr) * 1971-07-14 1973-02-23 Boehler Zenkner Stroemtech

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6963758B2 (en) 2000-09-29 2005-11-08 Ntt Docomo, Inc. High-sensitivity wireless receiving device and high-frequency unit used therefor

Also Published As

Publication number Publication date
DE9306969U1 (fr) 1993-07-15
ES2122081T3 (es) 1998-12-16
EP0623788B1 (fr) 1998-09-16
DE59406907D1 (de) 1998-10-22

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