US2234037A - Air conditioning system utilizing refrigeration - Google Patents

Air conditioning system utilizing refrigeration Download PDF

Info

Publication number
US2234037A
US2234037A US240995A US24099538A US2234037A US 2234037 A US2234037 A US 2234037A US 240995 A US240995 A US 240995A US 24099538 A US24099538 A US 24099538A US 2234037 A US2234037 A US 2234037A
Authority
US
United States
Prior art keywords
air
outdoor
recirculated
recirculated air
thermostat
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
Application number
US240995A
Inventor
Samuel M Anderson
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.)
BF Sturtevant Co
Original Assignee
BF Sturtevant Co
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 BF Sturtevant Co filed Critical BF Sturtevant Co
Priority to US240995A priority Critical patent/US2234037A/en
Application granted granted Critical
Publication of US2234037A publication Critical patent/US2234037A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit

Definitions

  • This invention relates to air conditioning systems employing refrigeration and relates more particularly to air conditioning systems for passenger vehicles employing mechanical refrigeration.
  • the .usual air conditioned railway passenger car is provided with an over-sized refrigerant compressor capable of supplying the refrigeration required under peak load.
  • the compressor probably operates under peak load not more than ten .days of a year, although it operates under reduced load about five months of a year. It is also the practice to recirculate about 75% of the air through the air cooler for saving refrigeration. This results in the over-sized compressor being started and stopped by the car thermostat at frequent intervals, it being idle a longer period than it is in service. This frequent cycling of the compressor equipment is undesirable for the reason that it increases depreciation of the equipment. The continuous recirculation of the air also adds undesirable odors to the air.
  • the wet bulb temperature of the outdoor air is at or below about 70 F. under average conditions.
  • bulb thermostat in the outdoor air stream for adjusting the outdoor and recirculated air intake shutters for increasing the volume of outdoor air preferably to 100% when the wet bulb temperature of the outdoor air is at or below 70 F., and for decreasing the volume of outdoor air when the wet bulb temperature of the outdoor air rises 4 above 70 F.
  • Another feature of my invention resides in automatically reinvigorating the recirculated air when the controls act to supply it' to the conditioner. This is accomplished, for example, by irradiating the recirculated air with ultra-violet light for destroying bacteria, and/or by spraying into the recirculated air a substance such, for example, as pine oil for the purpose of imparting to the recirculated air the characteristics of outdoor air.
  • one object of my invention is to use larger volumes of outdoor air in the air conditioning of passenger vehicles, and 5 to operate the refrigerating equipment during longer periods than has been the practice in the past, and that another object of the invention is to reinvigorate the recirculated air to simulate outdoor air when it is not economically feasible 10 to use all outdoor air.
  • the air washer 5 is supplied with chilled water 1 by the pump 6 from the evaporator l.
  • the car thermostat II is connected in circuit 20 with the motor 9 and the electric source l2 and starts and stops the compressor motor when the temperature is above and at respectively, the desired temperature.
  • the blower l3 draws outdoor air through the 25 shutters l4, and recirculated air from the passenger space through the shutters l5, and passes the air through the washer 5 into the supply duct H.
  • the shutters Hand l5 are adjusted by the mo- 30 tor I6 which is controlled by the thermostat it which responds to changes in the wet bulb temperature of the outdoor air.
  • the thermostat is connected by the wires I9, 20, 2
  • the load on the conditioner is greater and the compressor operates for longer periods of time. The result however, is that the air is more comfortable, is odorless, and the humidity does not rise as it normally does during the more frequent ofi cycles of the prior systems.
  • the thermostat l8 closes the above described circuit causing the outdoor and recirculated air shutters to be adjusted by the motor Hi to supply, for example, 75% recirculated air and 25% outdoor air.
  • the converter 23 and motor 24 both of which are connected in shunt to the shutter motor iii are
  • the converter then energizes the ultra-violet lamp in the recirculated air stream, to irradiate the recirculated air for destroying harmful bacteria, and the motor 24 drives the air pump 26 to spray pine oil or other lated air could be employed.
  • the air pump 26 drives the air pump 26 to spray pine oil or other lated air could be employed.
  • motor 24 could be actuated when recirculated air is supplied, to add the pine oil, or other desired substance to the washer spray water.
  • An air cooling system comprising an air cooler, means for supplying outdoor and mainculated air into said 'cooler, a thermostat excirculated air and for decreasing the proportion of outdoor air when the voutdoor temperature is above said point, means for reinvigorating the recirculatedair to simulate outdoor air conditions, and means for actuating said last mentioned means when said thermostat acts to increase the proportion of recirculated air.
  • An air cooling system comprising an air 50 cooler, means for supplying outdoor and recircumeans for actuating said last mentioned means when said thermostat acts to increase the proportion of recirculated air.
  • An air conditioner comprising a heat exchanger having an outdoor and a recirculated air inlet, an ultra-violet lamp for irradiating the recirculated air, an energizing source for said lamp, temperature responsive means for closing the recirculated air inlet, and means actuated when said temperature responsive means closes said recirculated air inlet for disconnecting said lamp from said source.
  • An air conditioner comprising a heat exchanger having an outdoor and a recirculated air inlet, an ultra-violet lamp for irradiating the recirculated air, an energizing source for said lamp, an outdoor wet bulb thermostat for closing the recirculated air inlet when the wet bulb temperature of the outdoor air falls below a predetermined polnt, and means actuated when said thermostat closes said recirculated air inlet for disconnecting said lamp from said source.
  • An air conditioner comprising a heat exchanger having a recirculated air inlet, means for varying the volume of recirculated air entering said inlet, a device for adding a pleasant odor to the air, and means for actuating said device when said first mentioned means increases the volume of recirculated air.
  • a heat exchanger having an outdoor air inlet, means forming a recirculated air inlet into said conditioner, adjustable means for opening and closing said recirculated air inlet, a device for adding a pleasant odor to the air, and means for actuating said device when said adjustable means opens said recirculated air inlet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Description

March 4, 1941. s. M. ANDERSON AIR CONDITIONING SYSTEM UTILIZING REFRIGERATION Filed Nov. 17, 1938 ON m 2 N m 7 x m u muwzmn 2 H monBEi z m M H U W I Tt N853 5.55m NN J E NM I E .3 z p N .WN M K 1 2 JAAfl/EL, M- ANDEIESOA/ w tfio M163 Patented Mar. 4, 1941 PATENT OFFICE AIR CONDITIONING SYSTEM UTILIZING REFRIGERATION Samuel M. Anderson Sharon, Mass., assignor to B. F. Sturtevant Company, Boston, Mass.
Application November 17, 1938, Serial No. 240,995
8 Claims.
This invention relates to air conditioning systems employing refrigeration and relates more particularly to air conditioning systems for passenger vehicles employing mechanical refrigeration.
The .usual air conditioned railway passenger car, is provided with an over-sized refrigerant compressor capable of supplying the refrigeration required under peak load. The compressor probably operates under peak load not more than ten .days of a year, although it operates under reduced load about five months of a year. It is also the practice to recirculate about 75% of the air through the air cooler for saving refrigeration. This results in the over-sized compressor being started and stopped by the car thermostat at frequent intervals, it being idle a longer period than it is in service. This frequent cycling of the compressor equipment is undesirable for the reason that it increases depreciation of the equipment. The continuous recirculation of the air also adds undesirable odors to the air.
I have determined that for a large portion of the time, the wet bulb temperature of the outdoor air is at or below about 70 F. under average conditions. I have also determined that when the wet bulb temperature of the outdoor air is not above about 70 F., the increased cost due to energy consumed, of supplying 100% outdoor air to the cooler, and of operating the compressor during longer periods and in fact, continuously if possible, is more than justified by the absence of unpleasant odors from the air, better control of humidity, and better air conditions.
5 I provide an air washer for cleaning and cooling the air, refrigeration compressor equipment, for
cooling the spray water, a car thermostat for starting and stopping the compressor, and a .wet
bulb thermostat in the outdoor air stream for adjusting the outdoor and recirculated air intake shutters for increasing the volume of outdoor air preferably to 100% when the wet bulb temperature of the outdoor air is at or below 70 F., and for decreasing the volume of outdoor air when the wet bulb temperature of the outdoor air rises 4 above 70 F.
Another feature of my invention resides in automatically reinvigorating the recirculated air when the controls act to supply it' to the conditioner. This is accomplished, for example, by irradiating the recirculated air with ultra-violet light for destroying bacteria, and/or by spraying into the recirculated air a substance such, for example, as pine oil for the purpose of imparting to the recirculated air the characteristics of outdoor air.
It is seen therefore that one object of my invention is to use larger volumes of outdoor air in the air conditioning of passenger vehicles, and 5 to operate the refrigerating equipment during longer periods than has been the practice in the past, and that another object of the invention is to reinvigorate the recirculated air to simulate outdoor air when it is not economically feasible 10 to use all outdoor air.
The invention will now be described with reference to the drawing which is a diagrammatic view of one embodiment of the invention.'
The air washer 5 is supplied with chilled water 1 by the pump 6 from the evaporator l. The compressor 8, driven by the electric motor 9, supplies the usual volatile refrigerant to the evaporator, through the condenser 10.
The car thermostat II is connected in circuit 20 with the motor 9 and the electric source l2 and starts and stops the compressor motor when the temperature is above and at respectively, the desired temperature.
The blower l3 draws outdoor air through the 25 shutters l4, and recirculated air from the passenger space through the shutters l5, and passes the air through the washer 5 into the supply duct H.
The shutters Hand l5 are adjusted by the mo- 30 tor I6 which is controlled by the thermostat it which responds to changes in the wet bulb temperature of the outdoor air. The thermostat is connected by the wires I9, 20, 2| and 22 in circuit with the shutter motor l6 andthe electric source l2 and acts when the wet bulb temperature of the outdoor air is at and below 68 F., to open the above described circuit causing the motor Hi to close the shutters l5 and open the shutters l4 so that all outdoor air enters the washer 5. During this period, the load on the conditioner is greater and the compressor operates for longer periods of time. The result however, is that the air is more comfortable, is odorless, and the humidity does not rise as it normally does during the more frequent ofi cycles of the prior systems.
When the wet bulb temperature of the outdoor air is above 70 F., the thermostat l8 closes the above described circuit causing the outdoor and recirculated air shutters to be adjusted by the motor Hi to supply, for example, 75% recirculated air and 25% outdoor air. At the same time, the converter 23 and motor 24 both of which are connected in shunt to the shutter motor iii, are
energized. The converter then energizes the ultra-violet lamp in the recirculated air stream, to irradiate the recirculated air for destroying harmful bacteria, and the motor 24 drives the air pump 26 to spray pine oil or other lated air could be employed. For example, the
motor 24 could be actuated when recirculated air is supplied, to add the pine oil, or other desired substance to the washer spray water.
While the invention has been described in connection with mechanical refrigeration, other forms of refrigeration could be employed. The usual ice source could be used and the thermostat I I could operate a by-pass around the ice water supply tank.
While one embodiment of the invention h been described for the purpose of illustration, it should be understood that other apparatus and arrangements of apparatus may be suggested by those skilled in the art without departure. from the spirit of the invention. I i
What is claimedis:
. 1. An air cooling system comprising an air cooler, means for supplying outdoor and mainculated air into said 'cooler, a thermostat excirculated air and for decreasing the proportion of outdoor air when the voutdoor temperature is above said point, means for reinvigorating the recirculatedair to simulate outdoor air conditions, and means for actuating said last mentioned means when said thermostat acts to increase the proportion of recirculated air.
- 2. An air cooling system comprising an air 50 cooler, means for supplying outdoor and recircumeans for actuating said last mentioned means when said thermostat acts to increase the proportion of recirculated air.
3. An air cooling system comprising an air cooler, means for supplying outdoor and recirculated air into said cooler, athermostat exposed to outdoor air for adjusting said means for in- 1 creasing the proportion of outdoor and for decreasing the proportion of =recirculated air when the outdoor temperature is below a predetermined point and for increasing .the proportion of recirculated air and for decreasing the proportion of outdoor air when the outdoor wet bulb temperature is above said point, means including means for adding a pleasant odor to the air for reinvigorating the recirculated air to simulate the outdoor temperature is below a predetermined point and for increasing the proportion of recirculated air and for decreasing the proportion of outdoor air when the outdoor temperature is above said point, means including an ultraviolet lamp for irradiating the recirculated air and including a device for adding a pleasant odor to the air for reinvigorating the recirculated air .to simulate outdoor air conditions, and means for actuating said last mentioned means when said thermostat acts to increase the proportion of recirculated air.
5. An air conditioner comprising a heat exchanger having an outdoor and a recirculated air inlet, an ultra-violet lamp for irradiating the recirculated air, an energizing source for said lamp, temperature responsive means for closing the recirculated air inlet, and means actuated when said temperature responsive means closes said recirculated air inlet for disconnecting said lamp from said source.
6. An air conditioner comprising a heat exchanger having an outdoor and a recirculated air inlet, an ultra-violet lamp for irradiating the recirculated air, an energizing source for said lamp, an outdoor wet bulb thermostat for closing the recirculated air inlet when the wet bulb temperature of the outdoor air falls below a predetermined polnt, and means actuated when said thermostat closes said recirculated air inlet for disconnecting said lamp from said source. I
7. An air conditioner comprising a heat exchanger having a recirculated air inlet, means for varying the volume of recirculated air entering said inlet, a device for adding a pleasant odor to the air, and means for actuating said device when said first mentioned means increases the volume of recirculated air.
8. In a heat exchanger having an outdoor air inlet, means forming a recirculated air inlet into said conditioner, adjustable means for opening and closing said recirculated air inlet, a device for adding a pleasant odor to the air, and means for actuating said device when said adjustable means opens said recirculated air inlet.
- SAMUEL M. ANDERSON.
US240995A 1938-11-17 1938-11-17 Air conditioning system utilizing refrigeration Expired - Lifetime US2234037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US240995A US2234037A (en) 1938-11-17 1938-11-17 Air conditioning system utilizing refrigeration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US240995A US2234037A (en) 1938-11-17 1938-11-17 Air conditioning system utilizing refrigeration

Publications (1)

Publication Number Publication Date
US2234037A true US2234037A (en) 1941-03-04

Family

ID=22908794

Family Applications (1)

Application Number Title Priority Date Filing Date
US240995A Expired - Lifetime US2234037A (en) 1938-11-17 1938-11-17 Air conditioning system utilizing refrigeration

Country Status (1)

Country Link
US (1) US2234037A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533690A (en) * 1949-05-03 1950-12-12 Pyle National Co Germicidal light arrangement for ventilated space
US2553711A (en) * 1949-03-11 1951-05-22 Raymond B Jackson Portable sterilizing apparatus
US2582986A (en) * 1949-06-10 1952-01-22 Walter Haertel Company Storage vault conditioning unit
US2619894A (en) * 1949-06-06 1952-12-02 Knepper Bonnie Air conditioning system
US2661676A (en) * 1948-01-21 1953-12-08 Farr Co Apparatus for maintaining predetermined atmospheric conditions in compartments
US2669923A (en) * 1950-10-09 1954-02-23 Knepper Bonnie Air conditioning system
US2709954A (en) * 1952-07-24 1955-06-07 Arthur K Baker Work tables
US2777759A (en) * 1953-02-13 1957-01-15 Sokolik Edward Air processing apparatus
US4319460A (en) * 1979-07-26 1982-03-16 Hester Industries, Inc. High humidity food chilling system
US4742761A (en) * 1987-07-20 1988-05-10 The Boeing Company Method and apparatus for controlling the concentration of carbon dioxide in an aircraft cabin
USRE33510E (en) * 1979-07-26 1991-01-01 Hester Industries, Inc. High humidity steam cooker with continuously running conveyor
WO2004027328A1 (en) * 2002-08-19 2004-04-01 Vladlen Futernik Device for air temperature control in a vehicle

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661676A (en) * 1948-01-21 1953-12-08 Farr Co Apparatus for maintaining predetermined atmospheric conditions in compartments
US2553711A (en) * 1949-03-11 1951-05-22 Raymond B Jackson Portable sterilizing apparatus
US2533690A (en) * 1949-05-03 1950-12-12 Pyle National Co Germicidal light arrangement for ventilated space
US2619894A (en) * 1949-06-06 1952-12-02 Knepper Bonnie Air conditioning system
US2582986A (en) * 1949-06-10 1952-01-22 Walter Haertel Company Storage vault conditioning unit
US2669923A (en) * 1950-10-09 1954-02-23 Knepper Bonnie Air conditioning system
US2709954A (en) * 1952-07-24 1955-06-07 Arthur K Baker Work tables
US2777759A (en) * 1953-02-13 1957-01-15 Sokolik Edward Air processing apparatus
US4319460A (en) * 1979-07-26 1982-03-16 Hester Industries, Inc. High humidity food chilling system
USRE33510E (en) * 1979-07-26 1991-01-01 Hester Industries, Inc. High humidity steam cooker with continuously running conveyor
USRE35259E (en) * 1979-07-26 1996-06-04 Hester Industries, Inc. High humidity steam cooker with continuously running conveyor
US4742761A (en) * 1987-07-20 1988-05-10 The Boeing Company Method and apparatus for controlling the concentration of carbon dioxide in an aircraft cabin
WO2004027328A1 (en) * 2002-08-19 2004-04-01 Vladlen Futernik Device for air temperature control in a vehicle

Similar Documents

Publication Publication Date Title
US2234037A (en) Air conditioning system utilizing refrigeration
US2513679A (en) Air conditioning system for passenger vehicles
US2160389A (en) Air conditioning system
US2048137A (en) Refrigeration method and apparatus
US2257485A (en) Air conditioning system
US3008694A (en) Coach heating, cooling and ventilating system
US2150224A (en) Refrigerating apparatus
US1853459A (en) Air conditioning for railway cars
US2846148A (en) Air heating system
US2204016A (en) Ventilating and humidifying system
US2343581A (en) Refrigerating apparatus
GB528420A (en) Improvements in or relating to the heating and air-conditioning of enclosures
US2685433A (en) Method and apparatus for air conditioning enclosures
US2187569A (en) Refrigerating apparatus
US2247542A (en) Thermo static air conditioning
US2206445A (en) Air conditioning system
US2029368A (en) Method and apparatus for conditioning air
US2598397A (en) Air-cooling attachment for warm air furnace systems
US2165830A (en) Air conditioning system for passenger vehicles
US2248756A (en) Refrigerating apparatus
US1944146A (en) Air conditioning apparatus
US2254813A (en) Aib conditioning system
US2426827A (en) Refrigeration apparatus
US2165829A (en) Air conditioning system
US1431146A (en) Drying apparatus