US2267425A - Air conditioning unit - Google Patents

Air conditioning unit Download PDF

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Publication number
US2267425A
US2267425A US317700A US31770040A US2267425A US 2267425 A US2267425 A US 2267425A US 317700 A US317700 A US 317700A US 31770040 A US31770040 A US 31770040A US 2267425 A US2267425 A US 2267425A
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United States
Prior art keywords
air
outlet
fan
air conditioning
inlet
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Expired - Lifetime
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US317700A
Inventor
Rowe William
Fitzgerald Robert
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    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/062—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/228—Heat exchange with fan or pump
    • Y10S165/30—Injector-type pump

Definitions

  • This invention relates to an apparatus for air conditioning a room. a
  • One of the objects of our invention is an apparatus to distribute heated or cooled air with such diflusion and directional characteristics so as to cause auniiorm temperature in the room without the presence of objectionable drafts or the sensation of abnormal heat or cold.
  • Another object of our invention is an adjustable feature whereby the apparatus may be adjusted to properly diifuse air according tothe dillerrent heights of different rooms.
  • Another object of our invention is to heat or cool a room by the introduction of a vortex air current and inducing a maximum of room air from the sides into said vortex before the air current reaches the breathing level.
  • Another object of our invention is thevrelationship between the size of the initial vortex and the apparatus designed to induce room air irom the sides.
  • Another object of our invention is the new and a; the diameter or the opening :2 is the diameter of the fan ll, and the diameter of the opening 2
  • Figure 2 is a diagrammatic sketch of the air currents where no frustro cone is used.
  • Figure 3 is a diagrammatic sketch showing the efiect of the air current by using the frustro cone.
  • Figure 1 relates to a unit heater, of which I l is the inlet, 12 a heating coil, i3 is the outlet; air is drawn through by fan It, operated by the motor l5; it is the upper casing; I1 is the lower casing; 18 is an outwardly flaring frustro cone; I9 is an outwardly flaring frustro cone; 20 is the point of attachment where the cone i3 is attached to the lower casing ll; 2
  • v a is the inlet, 12 a heating coil, i3 is the outlet; air is drawn through by fan It, operated by the motor l5; it is the upper casing; I1 is the lower casing; 18 is an outwardly flaring frustr
  • Figure 2 shows in diagrammatic form the air currents wherein no frustro cone is used.
  • the lines 21 represent the direction of the flow of air from the fan l4, and the length of the lines represent the velocity distribution.
  • the other arrows represent generally the direction of the flow,
  • Figure 3 shows diagrammatically the efiect on the air current of using the frustro cone.
  • the arrows 21 represent the direction and velocity of the flow ofair
  • the arrows 28 represent the induced air stream.
  • the member 26 is of importance in causing an induced air current from the center or vortex. Without the member 28 the air stream would tend to assume its original directional flow with a substantially reduced proportion of induced air currents from the center. In order to obtain diilusion without draft, it is necessary to induce as much air as is possible- This is of extreme importance in introducing warm air into the room wherein the temperature of the heated air is 125 degrees F. and the temperature of the air within the room is substantially '10 degrees F.
  • represent feed lines from source of power.
  • the conventional motor control switch 32 from which the line 34 goes to a conventional double-pole reversing switch 33, from which lines 35 and 36 run from the supply side of the reversing switch to one of the two windings of the motor, while lines 31 and 38 run from theload side of the reversing the lip switch to the remaining winding of the motor.
  • the heating coil I2 is of fin type construction with annular tubes 39 and fins 40, and the continual passage of air through this coil in one direction may cause a collection of lint, dust or dirt. It has been found that by reversing the flow of air through the unit this lint, dust or dirt will be dislodged from the fins or tubes. Accordingly, the apparatus shown in combination with the double-pole reversing switch, acts to reverse the direction of the fan so as to ;cause the air to flow out of the inlet II and thereby clean the coil and increase its efiiciency.
  • an air conditioning device the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heatexchang'er to said outlet, an air mixing and diffusing 'device in co-operation with said outlet comprising'tan outwardly flaring annular member attached tothe outlet of said casing and a second outwardly flaring annular member spaced by a distance substantially equal to onethird of the diameter of the fan from the first mentioned member to form an air passage therebetween, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan, whereby air is induced through said second member and out of the top opening, mixed with the outlet air and discharged through said passageway.
  • an air conditioning device the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diifusing device in co-operation with said outlet comprising an outwardly flaring annular member attached to the outlet of said casing and a second outwardly flaring annular member spaced from the first mentioned member to form an air passage means to adjustably regulate said spacing there-between, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan, whereby air is induced through said second member and out of the top opening, mixed with the outlet air and discharged through said passage-way.
  • an air conditioning device the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diffusing device in co-operation with said outlet comprising an outwardly flaring annular member attached to the outlet of said casing and a second outwardly flaring annular member spaced from the first mentioned member to form an air passage there-between, said member being attached to the first member by adJustable tie rods, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan, whereby air is induced through said second member and out of the top opening, mixed with the outlet air and discharged through said passageway.
  • an air conditioning device the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diffusing device in co-operation with said outlet comprising an outwardly flaring annular member open at the top and bottom, the top opening being coincident with said outlet and a second hollow outwardly flaring member open at the top and bottom, spaced from the first mentioned member to form an air passage there between, the top opening of the second mentioned member having a diameter substantially equal to one-third of the diameter of the fan and spaced from and below the said outlet whereby air is induced through the said second member and out the top opening and mixed'with the outlet air and discharged through said passage-way.
  • an air conditioning device the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diffusing device in cooperation with said outlet comprising an outwardly flaring annular member attached to the outlet of said casing and a second outwardly flaring annular member spaced from the first mentioned member to form an air passage there-between, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan and with the outward edge flared laterally whereby air which is induced through said second member and out of the top opening and is mixed with the outlet air will be discharged from said passage-way in a lateral direction.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Description

Dec. 23, 1941. w. ROWE ET AL AIR CONDITIONING UNIT I Filed Feb. '7, 1940 2 Sheets-Sheet l o o o o a O O O O0 ATTORNEY Dec. 23, 1941.
I Patented Dec 23, 1941 Crone, Wis, and Robert William Rowe, La
. Fitzgerald,
Chicago, Ill.
Application February 7, 1940, Serial No. 317,700 5 Claims- (Cl- 257-137) This invention relates to an apparatus for air conditioning a room. a
One of the objects of our invention is an apparatus to distribute heated or cooled air with such diflusion and directional characteristics so as to cause auniiorm temperature in the room without the presence of objectionable drafts or the sensation of abnormal heat or cold.
Another object of our invention is an adjustable feature whereby the apparatus may be adjusted to properly diifuse air according tothe diilerent heights of different rooms.
Another object of our invention is to heat or cool a room by the introduction of a vortex air current and inducing a maximum of room air from the sides into said vortex before the air current reaches the breathing level.
Another object of our invention is thevrelationship between the size of the initial vortex and the apparatus designed to induce room air irom the sides.
Another object of our invention is the new and a; the diameter or the opening :2 is the diameter of the fan ll, and the diameter of the opening 2| is one-third of the diameter of the fan ll.
The best efficiency and diffusion both as to respects quantity and direction is obtained by having the throat or. distance between the members l8 and I3. substantially equal to one-third of the diameter of the fan ll; an increase or decrease in the size of this throat will change both the novel means of cleaning the heater by reversing the flow of air therethrough.
The foregoing and manyother specific features of our invention are set forth in the following specification, where we described what we consider the preferred embodiments of our invention. These are illustrated in the accompanying drawings where- Figure 1 is a cross-sectional vertical elevation of the apparatus described in our invention.
Figure 2 is a diagrammatic sketch of the air currents where no frustro cone is used.
Figure 3 is a diagrammatic sketch showing the efiect of the air current by using the frustro cone.
Figure 1 relates to a unit heater, of which I l is the inlet, 12 a heating coil, i3 is the outlet; air is drawn through by fan It, operated by the motor l5; it is the upper casing; I1 is the lower casing; 18 is an outwardly flaring frustro cone; I9 is an outwardly flaring frustro cone; 20 is the point of attachment where the cone i3 is attached to the lower casing ll; 2| is the upper opening in I8; 22 is the upper opening'in the frustro cone i9; 23 is a rod adapted to support l8 and to regulate the distance between 18 and direction of the flow and the amount of diffusion, and with rooms of difierent heights it is very desirable to obtain different directional and diffusional characteristics. v a
Figure 2 shows in diagrammatic form the air currents wherein no frustro cone is used. The lines 21 represent the direction of the flow of air from the fan l4, and the length of the lines represent the velocity distribution. The other arrows represent generally the direction of the flow,
and the curved arrows represent induced air from the sides by the flow of the main stream.
Figure 3 shows diagrammatically the efiect on the air current of using the frustro cone. As in Figure 2, the arrows 21 represent the direction and velocity of the flow ofair, and the arrows 28 represent the induced air stream.
IS; the lower end of the rod 23 is affixed to the It has been found that the member 26 is of importance in causing an induced air current from the center or vortex. Without the member 28 the air stream would tend to assume its original directional flow with a substantially reduced proportion of induced air currents from the center. In order to obtain diilusion without draft, it is necessary to induce as much air as is possible- This is of extreme importance in introducing warm air into the room wherein the temperature of the heated air is 125 degrees F. and the temperature of the air within the room is substantially '10 degrees F.
The greater amount of 70 degrees F. air that can be mixed with the heated air before the air stream reaches occupied portion, the less liability there will be to drafts, and the more uniform the room temperature. This is also true when the apparatus is used to cool or introduce cold air into the room.
30 and 3| represent feed lines from source of power. Interposed in the line 30 is the conventional motor control switch 32, from which the line 34 goes to a conventional double-pole reversing switch 33, from which lines 35 and 36 run from the supply side of the reversing switch to one of the two windings of the motor, while lines 31 and 38 run from theload side of the reversing the lip switch to the remaining winding of the motor.
The heating coil I2 is of fin type construction with annular tubes 39 and fins 40, and the continual passage of air through this coil in one direction may cause a collection of lint, dust or dirt. It has been found that by reversing the flow of air through the unit this lint, dust or dirt will be dislodged from the fins or tubes. Accordingly, the apparatus shown in combination with the double-pole reversing switch, acts to reverse the direction of the fan so as to ;cause the air to flow out of the inlet II and thereby clean the coil and increase its efiiciency.
.We claim:
1. In an air conditioning device, the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heatexchang'er to said outlet, an air mixing and diffusing 'device in co-operation with said outlet comprising'tan outwardly flaring annular member attached tothe outlet of said casing and a second outwardly flaring annular member spaced by a distance substantially equal to onethird of the diameter of the fan from the first mentioned member to form an air passage therebetween, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan, whereby air is induced through said second member and out of the top opening, mixed with the outlet air and discharged through said passageway.
2. In an air conditioning device, the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diifusing device in co-operation with said outlet comprising an outwardly flaring annular member attached to the outlet of said casing and a second outwardly flaring annular member spaced from the first mentioned member to form an air passage means to adjustably regulate said spacing there-between, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan, whereby air is induced through said second member and out of the top opening, mixed with the outlet air and discharged through said passage-way.
3. In an air conditioning device, the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diffusing device in co-operation with said outlet comprising an outwardly flaring annular member attached to the outlet of said casing and a second outwardly flaring annular member spaced from the first mentioned member to form an air passage there-between, said member being attached to the first member by adJustable tie rods, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan, whereby air is induced through said second member and out of the top opening, mixed with the outlet air and discharged through said passageway.
4. In an air conditioning device, the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diffusing device in co-operation with said outlet comprising an outwardly flaring annular member open at the top and bottom, the top opening being coincident with said outlet and a second hollow outwardly flaring member open at the top and bottom, spaced from the first mentioned member to form an air passage there between, the top opening of the second mentioned member having a diameter substantially equal to one-third of the diameter of the fan and spaced from and below the said outlet whereby air is induced through the said second member and out the top opening and mixed'with the outlet air and discharged through said passage-way.
5. In an air conditioning device, the combination of a heat exchanger, a casing with inlet and outlet, a fan to draw air from said inlet through said heat exchanger to said outlet, an air mixing and diffusing device in cooperation with said outlet comprising an outwardly flaring annular member attached to the outlet of said casing and a second outwardly flaring annular member spaced from the first mentioned member to form an air passage there-between, the second member being hollow, open at top and bottom, the top opening being substantially one-third of the diameter of the fan and with the outward edge flared laterally whereby air which is induced through said second member and out of the top opening and is mixed with the outlet air will be discharged from said passage-way in a lateral direction.
ROBERT FITZGERALD. WILLIAM ROWE.
US317700A 1940-02-07 1940-02-07 Air conditioning unit Expired - Lifetime US2267425A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628550A (en) * 1948-04-16 1953-02-17 Bell Telephone Labor Inc Ventilator for telephone booths
US2674934A (en) * 1949-12-15 1954-04-13 Tuttle & Bailey Inc Air conditioning and distributing system
US2863645A (en) * 1953-11-16 1958-12-09 Modine Mfg Co Heat exchanger mounting
US2873097A (en) * 1955-06-14 1959-02-10 Brandi Otto Heinz Additional air supply for radiators
US4136735A (en) * 1975-01-24 1979-01-30 International Harvester Company Heat exchange apparatus including a toroidal-type radiator
US4184541A (en) * 1974-05-22 1980-01-22 International Harvester Company Heat exchange apparatus including a toroidal-type radiator
WO1980000743A1 (en) * 1978-09-20 1980-04-17 Mitco Corp Air distribution system
US4677904A (en) * 1985-05-20 1987-07-07 Matsushita Electric Industrial Co., Ltd. Fluid flow control assembly
US5077825A (en) * 1991-03-12 1991-12-31 Ernest Monrose Space heater mounted to ceiling fan
US5564980A (en) * 1995-02-09 1996-10-15 Becker; Sydney J. Room air quality conditioning system
US5668920A (en) * 1996-01-17 1997-09-16 Pelonis Usa Ltd. Ceiling fan with attachable heater housing having an additional fan therein
US5884694A (en) * 1997-03-26 1999-03-23 Tanenbaum; Aaron Bathroom dehumidifier method and apparatus
US20030228142A1 (en) * 1998-11-16 2003-12-11 Reiker Kenneth H. Ceiling mounted heating and cooling device and method therefor
DE102007031421B4 (en) * 2007-07-05 2018-02-22 Al-Ko Therm Gmbh Ceiling air conditioner

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628550A (en) * 1948-04-16 1953-02-17 Bell Telephone Labor Inc Ventilator for telephone booths
US2674934A (en) * 1949-12-15 1954-04-13 Tuttle & Bailey Inc Air conditioning and distributing system
US2863645A (en) * 1953-11-16 1958-12-09 Modine Mfg Co Heat exchanger mounting
US2873097A (en) * 1955-06-14 1959-02-10 Brandi Otto Heinz Additional air supply for radiators
US4184541A (en) * 1974-05-22 1980-01-22 International Harvester Company Heat exchange apparatus including a toroidal-type radiator
US4136735A (en) * 1975-01-24 1979-01-30 International Harvester Company Heat exchange apparatus including a toroidal-type radiator
DE2953168C2 (en) * 1978-09-20 1989-08-03 Mitco Corp., Somerville, Mass., Us
WO1980000743A1 (en) * 1978-09-20 1980-04-17 Mitco Corp Air distribution system
US4677904A (en) * 1985-05-20 1987-07-07 Matsushita Electric Industrial Co., Ltd. Fluid flow control assembly
US5077825A (en) * 1991-03-12 1991-12-31 Ernest Monrose Space heater mounted to ceiling fan
WO1992017041A1 (en) * 1991-03-12 1992-10-01 Ernest Monrose Space heater mounted to ceiling fan
US5564980A (en) * 1995-02-09 1996-10-15 Becker; Sydney J. Room air quality conditioning system
US5668920A (en) * 1996-01-17 1997-09-16 Pelonis Usa Ltd. Ceiling fan with attachable heater housing having an additional fan therein
US6160956A (en) * 1996-01-17 2000-12-12 Pelonis; Kosta L. Ceiling fan with heating/lighting assembly
US5884694A (en) * 1997-03-26 1999-03-23 Tanenbaum; Aaron Bathroom dehumidifier method and apparatus
US20030228142A1 (en) * 1998-11-16 2003-12-11 Reiker Kenneth H. Ceiling mounted heating and cooling device and method therefor
DE102007031421B4 (en) * 2007-07-05 2018-02-22 Al-Ko Therm Gmbh Ceiling air conditioner

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