EP0490331B1 - Air refrigeration unit - Google Patents
Air refrigeration unit Download PDFInfo
- Publication number
- EP0490331B1 EP0490331B1 EP91121152A EP91121152A EP0490331B1 EP 0490331 B1 EP0490331 B1 EP 0490331B1 EP 91121152 A EP91121152 A EP 91121152A EP 91121152 A EP91121152 A EP 91121152A EP 0490331 B1 EP0490331 B1 EP 0490331B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- duct
- evaporator
- refrigeration unit
- fans
- 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.)
- Expired - Lifetime
Links
Images
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
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
-
- 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
- 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
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
-
- 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
- F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
-
- 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
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/04—Air-mixing units
Definitions
- the present invention relates to an air refrigeration unit.
- one is substantially constituted by a cabinet, composed of a frame and of covering panels, in which an evaporator is conveniently arranged between the other refrigeration devices and a series of two fans.
- a duct is defined in the cabinet, which contains the evaporator and the fans and is suitable for conveying air from a room and for returning it thereto after treating it.
- a seperate duct suitable for drawing external replacement air is also currently defined in said duct so as to terminate upstream of the evaporator.
- the aim of the present invention is to provide an air refrigeration unit which solves the problem described above in known types.
- a consequent primary object is to avoid resorting to an auxiliary fan for the external replacement air.
- Another object is to provide a refrigeration unit which is not more complicated than current units.
- Not least object is to provide an air refrigeration unit which can be used with conventional machines and facilities.
- an air refrigeration unit of the type which comprises: a box-like body composed of a supporting frame and covering panels; a refrigeration circuit comprising an evaporator; a battery of fans; a duct defined in the box-like body for conveying ambient air to and from the space to be conditioned; whereby the evaporator is arranged at a median position between the battery of fans and the other devices of the refrigeration circuit, and; whereby the evaporator and the battery of fans are arranged in the duct for conveying ambient air, said unit being characterized in that a further seperate duct is defined in the unit which connects the region downstream of the evaporator to an opening for drawing outside replacement air.
- the air refrigeration unit comprises a frame 1 made of metallic elements defining a parallelepipedal box-like body 2 which is conveniently closed by covering panels, which are not illustrated.
- the various air treatment elements are arranged in said body 2.
- an evaporator 3 is arranged transversely and in an inclined position in a median region inside a duct 4 defined in said structure.
- the intake opening 5 of the evaporator 3 is arranged in a median lateral region in a position directly underlying an operation and control panel 6.
- Said duct 4 which is substantially L-shaped, ends above the evaporator 3 in the region wherein a battery of two fans 7 is arranged, the delivery outlets 8 of said fans being directed upward and thus being suitable for returning the treated air into the room.
- the other refrigeration devices are arranged below said evaporator 3 and are divided therefrom by means of a wall 9 which delimits the duct 4.
- a seperate duct 12 having a substantially rectangular cross-section and arranged vertically, is defined on the side opposite to said intake opening 5 in the unit between the walls 11 of the channel system 4 and the covering panels.
- Said seperate duct 12 is connected, in a downward position, by means of a flexible connecting hose 13, to an opening 14 which is defined in the bottom in the region of the devices 10 and is adapted for drawing outside replacement air.
- said seperate duct 12 has a lateral hole at which a cylindrical filter 15 is arranged; said filter connects said seperate duct to the region downstream of the evaporator 3 immediately upstream of the axial suction inlet of one of the fans 7.
- outlet of the seperate duct 12 is in the region downstream of the evaporator 3, i.e. in a region wherein the air suction produced by the fans 7 is felt considerably, causes an amount of replacement air sufficient to provide a sufficient replacement in the room to be drawn through said outlet.
- the air refrigeration unit can be manufactured without particular problems by modifying the current structures and is more economical than known types by virtue of the fact that it does not have the additional fan.
- the materials employed so long as they are compatible with the contingent use, and the dimensions may be any according to the requirements.
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)
- Motor Or Generator Cooling System (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
- The present invention relates to an air refrigeration unit.
- Among the various types of air refrigeration unit currently commercially available, one is substantially constituted by a cabinet, composed of a frame and of covering panels, in which an evaporator is conveniently arranged between the other refrigeration devices and a series of two fans.
- A duct is defined in the cabinet, which contains the evaporator and the fans and is suitable for conveying air from a room and for returning it thereto after treating it.
- A seperate duct suitable for drawing external replacement air is also currently defined in said duct so as to terminate upstream of the evaporator.
- However, since the outlet of said seperate duct is arranged upstream of the evaporator, i.e. in a region where the suction effect of the series of fans is scarcely felt, and since said evaporator constitutes an element which induces a high load loss on the air flow as passes through it,the drawn replacement air flow-rate is extremely low and thus insufficient.
- In order to solve this problem, an additional fan has been arranged in the seperate duct, but this obviously entails an increase in cost for the entire apparatus.
- The aim of the present invention is to provide an air refrigeration unit which solves the problem described above in known types.
- A consequent primary object is to avoid resorting to an auxiliary fan for the external replacement air.
- Another object is to provide a refrigeration unit which is not more complicated than current units.
- Not least object is to provide an air refrigeration unit which can be used with conventional machines and facilities.
- This aim, these objects and others which will become apparent hereinafter are achieved by an air refrigeration unit of the type which comprises: a box-like body composed of a supporting frame and covering panels; a refrigeration circuit comprising an evaporator; a battery of fans; a duct defined in the box-like body for conveying ambient air to and from the space to be conditioned; whereby the evaporator is arranged at a median position between the battery of fans and the other devices of the refrigeration circuit, and; whereby the evaporator and the battery of fans are arranged in the duct for conveying ambient air, said unit being characterized in that a further seperate duct is defined in the unit which connects the region downstream of the evaporator to an opening for drawing outside replacement air.
- Further characteristics and advantages of the invention will become apparent from the detailed description of an embodiment thereof, illustrated only by way of non-limitative example in the accompanying drawings, wherein:
- figure 1 is a perspective view of the air refrigeration unit according to the invention, without the covering panels;
- figure 2 is a side view of the refrigeration unit of figure 1.
- With reference to the above figures, the air refrigeration unit according to the invention comprises a frame 1 made of metallic elements defining a parallelepipedal box-
like body 2 which is conveniently closed by covering panels, which are not illustrated. - The various air treatment elements are arranged in said
body 2. - In particular, an
evaporator 3 is arranged transversely and in an inclined position in a median region inside aduct 4 defined in said structure. The intake opening 5 of theevaporator 3 is arranged in a median lateral region in a position directly underlying an operation andcontrol panel 6. - Said
duct 4, which is substantially L-shaped, ends above theevaporator 3 in the region wherein a battery of two fans 7 is arranged, thedelivery outlets 8 of said fans being directed upward and thus being suitable for returning the treated air into the room. - The other refrigeration devices, generally indicated by the
reference numeral 10, are arranged below saidevaporator 3 and are divided therefrom by means of a wall 9 which delimits theduct 4. - According to the invention, a
seperate duct 12, having a substantially rectangular cross-section and arranged vertically, is defined on the side opposite to said intake opening 5 in the unit between the walls 11 of thechannel system 4 and the covering panels. - Said
seperate duct 12 is connected, in a downward position, by means of a flexible connectinghose 13, to an opening 14 which is defined in the bottom in the region of thedevices 10 and is adapted for drawing outside replacement air. - In an upward position, said
seperate duct 12 has a lateral hole at which acylindrical filter 15 is arranged; said filter connects said seperate duct to the region downstream of theevaporator 3 immediately upstream of the axial suction inlet of one of the fans 7. - The fact that the outlet of the
seperate duct 12 is in the region downstream of theevaporator 3, i.e. in a region wherein the air suction produced by the fans 7 is felt considerably, causes an amount of replacement air sufficient to provide a sufficient replacement in the room to be drawn through said outlet. - With this arrangement of the
seperate duct 12 it is therefore no longer necessary to use an additional fan as provided in current types. - In practice it has thus been observed that the air refrigeration unit according to the invention has achieved the intended aim and objects, the disadvantages observed in known types having been eliminated by defining in said unit a particular duct suitable for drawing replacement air.
- The air refrigeration unit can be manufactured without particular problems by modifying the current structures and is more economical than known types by virtue of the fact that it does not have the additional fan.
- In practice, the materials employed, so long as they are compatible with the contingent use, and the dimensions may be any according to the requirements.
Claims (6)
- An air refrigeration unit comprising:- a box-like body (2) composed of a supporting frame (1) and covering panels;- a refrigeration circuit comprising an evaporator (3);- a battery of fans (7);- a duct (4) defined in the box-like body (2) for conveying ambient air to and from the space to be conditioned;- whereby the evaporator (3) is arranged at a median position between the battery of fans (7) and the other devices (10) of the refrigeration circuit, and;- whereby the evaporator (3) and the battery of fans (7) are arranged in the duct (4) for conveying ambient air, characterized in that- a further seperate duct (12) is defined in the unit which connects the region downstream of the evaporator (3) to an opening (14) for drawing outside replacement air.
- An air refrigeration unit, according to claim 1, characterized in that said evaporator (3) is arranged above said other refrigeration devices (10) and below said fans (7), and that said air conveyance duct (4) conveniently is L-shaped with lateral suction and upward delivery.
- An air refrigeration unit according to one or more of the preceding claims, characterized in that said further duct (12) for replacement air is arranged vertically on the side opposite to the intake opening (5) of said ambient air duct (4).
- An air refrigeration unit according to one or more of the preceding claims, characterized in that said replacement air duct (12) is defined between the inner walls (11) and the covering panels of said unit.
- An air refrigeration unit according to one or more of the preceding claims, characterized in that said replacement air duct (12) is connected, by means of a flexible hose (13), to said intake opening (14) defined in the bottom of said box-like body (2) in the region of said other refrigeration devices (10).
- An air refrigeration unit according to one or more of the preceding claims, characterised in that said replacement air duct (12) is connected to the region downstream of said evaporator (3) by means of a filter (15).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT03073390U IT222964Z2 (en) | 1990-12-13 | 1990-12-13 | AIR REFRIGERATOR STRUCTURE |
IT3073390U | 1990-12-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0490331A2 EP0490331A2 (en) | 1992-06-17 |
EP0490331A3 EP0490331A3 (en) | 1992-12-16 |
EP0490331B1 true EP0490331B1 (en) | 1995-03-08 |
Family
ID=11231525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91121152A Expired - Lifetime EP0490331B1 (en) | 1990-12-13 | 1991-12-10 | Air refrigeration unit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0490331B1 (en) |
AT (1) | ATE119652T1 (en) |
DE (1) | DE69107973T2 (en) |
IT (1) | IT222964Z2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103307722B (en) * | 2013-03-19 | 2015-09-02 | 海尔集团公司 | There is the vertical air conditioner air-supply arrangement of flow deflector |
CN103375895B (en) * | 2013-04-17 | 2015-12-02 | 海尔集团公司 | A kind of air-conditioner air supply device |
CN103604202B (en) * | 2013-06-03 | 2016-08-10 | 海尔集团公司 | Vertical air conditioner air-supply arrangement |
EP3006851B1 (en) * | 2013-06-03 | 2018-04-25 | Haier Group Corporation | Air-conditioner with air supply apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2828110A (en) * | 1954-04-29 | 1958-03-25 | American Air Filter Co | Selective room heater and cooler |
BE793511A (en) * | 1971-12-31 | 1973-04-16 | F H Biddle Ltd | VENTILATION UNIT |
-
1990
- 1990-12-13 IT IT03073390U patent/IT222964Z2/en active IP Right Grant
-
1991
- 1991-12-10 EP EP91121152A patent/EP0490331B1/en not_active Expired - Lifetime
- 1991-12-10 AT AT91121152T patent/ATE119652T1/en not_active IP Right Cessation
- 1991-12-10 DE DE69107973T patent/DE69107973T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69107973T2 (en) | 1995-08-10 |
IT9030733U1 (en) | 1992-06-14 |
IT9030733V0 (en) | 1990-12-13 |
ATE119652T1 (en) | 1995-03-15 |
EP0490331A3 (en) | 1992-12-16 |
IT222964Z2 (en) | 1995-05-12 |
DE69107973D1 (en) | 1995-04-13 |
EP0490331A2 (en) | 1992-06-17 |
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