US2593702A - Gaseous curtain for ventilating exhaust - Google Patents
Gaseous curtain for ventilating exhaust Download PDFInfo
- Publication number
- US2593702A US2593702A US20666A US2066648A US2593702A US 2593702 A US2593702 A US 2593702A US 20666 A US20666 A US 20666A US 2066648 A US2066648 A US 2066648A US 2593702 A US2593702 A US 2593702A
- Authority
- US
- United States
- Prior art keywords
- air
- curtain
- gaseous
- gas
- ventilating exhaust
- 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
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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
- F24F9/00—Use of air currents for screening, e.g. air curtains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
- F24F2009/007—Use of air currents for screening, e.g. air curtains using more than one jet or band in the air curtain
Definitions
- This invention relates to gaseous curtains for U ventilating exhaust structures.
- the invention is particularly useful in the treatment of fumes, smoke, particle-laden gas, chemical vapors, etc.
- gas as employed herein, I mean' not only inccndensable gaseous materials but condensable vapors, etc.
- An object of the invention is to provide ventilating exhaust equipment in conjunction with means for forming air or-other gaseous curtains about one or more sides of a source of smoke, fumes, particle-laden gas, chemical vapors, etc., so as to confine them in an area adjacent the intake of the ventilating exhaust equipment.
- a further object is to provide in such a structure, means for providing a plurality of gaseous curtains with the result that one curtain is effective in projecting the other curtain for a greater distance than it would go without such assistance while at the same time providing an outer curtain of clean air or warm air as a protection for the operator.
- Yet another object is to provide ventilatin exhaust equipment wherein contaminated gaseous material or air is used to form an 'eifective curtain about a column of smoke, vapors, etc., while at the same time there is formed an outer sheath of non-contaminated air or gaseous material which protects the -op erator from said contaminated'air curtain, etc.
- Still another object is to provide an air curtain which may be employed for any purpose and which consists generally of cold air or other gaseous material while at the same time providenable it to be projected a greater distance.
- I provide two air curtains formed by nozzles which may be elongated to provide relatively narrow par- This arrangement permits the use or" contaminated air or gas for the inner sheet or curtain while the eporator is protected through the use of an outer curtain of relatively pure air which may be heated or otherwise treated for the benefit of the operator, etc.
- I provide an exhaust intake Ii] communicating with the conduit H connected with any suitable source of suction.
- I provide a nozzle I6 having an outlet I! from which is discharged an inner curtain of air or other gaseous material.
- the outlet l'l is elongated so as to provide a relatively wide curtain of air which will enclose substantially one side of the source of the gaseous material.
- the port ll may be relatively short and for other uses, it may be semi-circular or otherwise shaped to provide a curtain of the desired contour.
- the outlet port of the discharged nozzle It may be so extended as to cover two sides or all four sides of the material which is .the source of the rising fumes, smoke, etc.,as described more fully in .my co-pending application for Ventilating Exhaust Structureff bearing Serial No. 16,307, which has matured into Patent No. 2,565,933.
- the ventilating exhaust formed by the intake H ⁇ .and conduit 11, may, if desired, consist of a plurality of suction intakes communicating with separate conduits, as described more fully in my co-pending application for Gas Treating Apparains .and Method, Serial No. 1533s, which has matured into Patent No. 2,579,401.
- the conduit 18 may llead to any source ,from which contaminated or partially contaminated air maybe picked up. Further, if desired, the conduit :8 may lead to a point exterior of the bu'ildingior the picking up of cold ant.
- conduit 18 When contaminated air or .cold air is introduced through conduit 18, there is danger of injury to the operator who is working with the source of gaseous material supported upon the floor ⁇ 5 adjacent the intake 10.
- I provide a second conduit 2!! which may lead from the room itself in which the air is relatively clean and relatively Warm and may be discharged by the fan 2
- Port 23 is preferably supported so as to deliver an air stream or curtain which is substantially parallel to the curtain discharged by port 11.
- the pipe 20 lead from a source of con- I taminated air or cold air, I prefer to pass it through a filter 24 supported within conduit 20 and also through the heater 25 supported in conduit 2! If warm air is being circulated from the room, the heater 25 may be cut off. Any means for furnishing heat to the heater structure 25 may be provided. In the specific illustration given, electric. resistance elements 26 are shown. It will be understood, however, that a steam heat exchanger or other suitable means for heating the air may be employed.
- the casting or other source of the rising column of gases, fumes, smoke, etc. may be brought by car, crane or any other means of conveyance to a position on the floor [5 adjacent the ventilating exhaust intake 10.
- Contaminated or cold air or a gaseous body from any source may be introduced through the pipe and discharged through nozzle 16 to form a curtain about the source of gaseous material on one or more sides thereof.
- an outer curtain 23 which consists of relatively pure air and air which may be heated.
- the conduit 18 is employed for forming a gaseous curtain of extremely hot air or other gases
- the conduit 20 may be employed for passing cold air through the nozzle 22 to form an outer sheath of cool air which protects the operator from the inner curtain of hot air, etc.
- the outer stream formed by the nozzle 22v not only provides the protection for the operator described above but also serves to eliminate frictional resistance to the, outer side of the ,air curtain from nozzle it and thus causes the inner air curtain to be projected for a greater distance downwardly toward the floor I5 where it serves not only as a means for confining the smoke, etc. within the area but also it supplies the carrier fluid needed for withdrawing the contaminated material.
- the outer curtain of air as it approaches the floor [5 turns inwardly to provide additional carrier fluid serving as the conveying means for removal of the contaminant.
- a hood having an inlet opening, supporting means for said hood and supporting the inlet portion of said hood at an inclination with respect to said rising column of gas whereby the lower portion of said hood is at one side of said column and the upper portion of said hood extends into said, column, a suction pipe communicating with said hood, and a pair of pipes provided with elongated parallel discharge openings supported adjacent the upper forward edge portion of said hood, said outlets being directed outwardly and downwardly across said rising column of gas, and means for discharging air through said outlet openings to form parallel curtains of air across said rising column and on the outer side thereof opposite said hood.
- a method for treating a rising column of gas the steps of withdrawing a portion of said rising column in a stream along one side of said rising column, discharging a curtain of air about the opposite side of said column of gas, heating a body of air and discharging a portion thereof in a plane substantially parallel with and contiguous with the path of said first-mentioned curtain of air to provide a warm curtain of air about said first-mentioned curtain.
- a hood casing providing a chamber having an inlet opening along one side of said rising column of gas, supporting means for said hood, a suction pipe communicating with said hood, a casing providing a pair of discharge chambers adjacent the upper forward edge portion of said hood, and a pair of pipes leading from different sources of air separately to and communicating with said casing chambers, said discharge openings being directed outwardly and downwardly across said rising column of gas.
- a method for treating a rising column of gas the steps of withdrawing a portion of said rising column in a stream along one side of said rising column, discharging a curtain of air about the opposite side of said column of gas, collecting a body of air cleaner than the air forming said first-mentioned curtain, and discharging the same in a plane substantially parallel with and contiguous to the path of said first-mentioned curtain of air to provide a protective curtain of air about said first-mentioned curtain.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Prevention Of Fouling (AREA)
Description
April 22, 1952 c, SCHNEIBLE 2,593,702
GASEOUS CURTAIN FOR VENTILATING EXHAUST Filed April 1;, 194a 'all'el sheets of air or other 'gas.
Patented Apr. 22,1952
GASEOU S CURTAIN FOR VENTILATING EXHAUST Claude B. Schneible, Detroit, Mich. Application April 13, 1948, Serial No. 20,666
4 Claims.
This invention relates to gaseous curtains for U ventilating exhaust structures.
The invention is particularly useful in the treatment of fumes, smoke, particle-laden gas, chemical vapors, etc. By the term' gas, as employed herein, I mean' not only inccndensable gaseous materials but condensable vapors, etc.
An object of the invention is to provide ventilating exhaust equipment in conjunction with means for forming air or-other gaseous curtains about one or more sides of a source of smoke, fumes, particle-laden gas, chemical vapors, etc., so as to confine them in an area adjacent the intake of the ventilating exhaust equipment. A further object is to provide in such a structure, means for providing a plurality of gaseous curtains with the result that one curtain is effective in projecting the other curtain for a greater distance than it would go without such assistance while at the same time providing an outer curtain of clean air or warm air as a protection for the operator. Yet another object is to provide ventilatin exhaust equipment wherein contaminated gaseous material or air is used to form an 'eifective curtain about a column of smoke, vapors, etc., while at the same time there is formed an outer sheath of non-contaminated air or gaseous material which protects the -op erator from said contaminated'air curtain, etc.
Still another object is to provide an air curtain which may be employed for any purpose and which consists generally of cold air or other gaseous material while at the same time providenable it to be projected a greater distance.
Such arrangement is shown more clearly in my co-pending application for Augmented Jet, Serial No. 698,512. It will be understood that any desired number of air curtains may be formed in the parallel relation described.
.In ithe 's pec'rfic illustration set out, I provide two air curtains formed by nozzles which may be elongated to provide relatively narrow par- This arrangement permits the use or" contaminated air or gas for the inner sheet or curtain while the eporator is protected through the use of an outer curtain of relatively pure air which may be heated or otherwise treated for the benefit of the operator, etc.
In the illustration given, I provide an exhaust intake Ii] communicating with the conduit H connected with any suitable source of suction.
material.
In order to prevent portions of the rising gaseous material from escaping into the room, while at the same time, giving the operator free access to the source of the gaseous material, I provide a nozzle I6 having an outlet I! from which is discharged an inner curtain of air or other gaseous material. Preferably the outlet l'l is elongated so as to provide a relatively wide curtain of air which will enclose substantially one side of the source of the gaseous material. However, for certain uses, the port ll may be relatively short and for other uses, it may be semi-circular or otherwise shaped to provide a curtain of the desired contour. If desired, the outlet port of the discharged nozzle It may be so extended as to cover two sides or all four sides of the material which is .the source of the rising fumes, smoke, etc.,as described more fully in .my co-pending application for Ventilating Exhaust Structureff bearing Serial No. 16,307, which has matured into Patent No. 2,565,933.
' The ventilating exhaust formed by the intake H} .and conduit 11, may, if desired, consist of a plurality of suction intakes communicating with separate conduits, as described more fully in my co-pending application for Gas Treating Apparains .and Method, Serial No. 1533s, which has matured into Patent No. 2,579,401.
Communicating with the curtain forming nozzle I6 .is a conduit 18 equipped with a powerdriven fan 19 for forcing air through the nozzle outlet IT. The conduit 18 may llead to any source ,from which contaminated or partially contaminated air maybe picked up. Further, if desired, the conduit :8 may lead to a point exterior of the bu'ildingior the picking up of cold ant.
When contaminated air or .cold air is introduced through conduit 18, there is danger of injury to the operator who is working with the source of gaseous material supported upon the floor {5 adjacent the intake 10. In order to protect the operator from the contaminated or cold air stream forming the inner curtain, I provide a second conduit 2!! which may lead from the room itself in which the air is relatively clean and relatively Warm and may be discharged by the fan 2| through a nozzle 22 having a port 23 substantially similar to the port [1. Port 23 is preferably supported so as to deliver an air stream or curtain which is substantially parallel to the curtain discharged by port 11. v
Should the pipe 20 lead from a source of con- I taminated air or cold air, I prefer to pass it through a filter 24 supported within conduit 20 and also through the heater 25 supported in conduit 2! If warm air is being circulated from the room, the heater 25 may be cut off. Any means for furnishing heat to the heater structure 25 may be provided. In the specific illustration given, electric. resistance elements 26 are shown. It will be understood, however, that a steam heat exchanger or other suitable means for heating the air may be employed.
Operation In the operation of the apparatus, the casting or other source of the rising column of gases, fumes, smoke, etc., may be brought by car, crane or any other means of conveyance to a position on the floor [5 adjacent the ventilating exhaust intake 10. Contaminated or cold air or a gaseous body from any source, may be introduced through the pipe and discharged through nozzle 16 to form a curtain about the source of gaseous material on one or more sides thereof. By enveloping the source of gaseous material or the rising column of gaseous material, escape of any portion thereof is prevented and such material is confined about the intake until it can be efiectively drawn off. At the same time, however, the operator who is standing on the floor l5 opposite the intake l6 and the air curtain discharged through port I1, is protected from the contaminated air or unheated air by an outer curtain 23 which consists of relatively pure air and air which may be heated. If the conduit 18 is employed for forming a gaseous curtain of extremely hot air or other gases, the conduit 20 may be employed for passing cold air through the nozzle 22 to form an outer sheath of cool air which protects the operator from the inner curtain of hot air, etc.
The outer stream formed by the nozzle 22v not only provides the protection for the operator described above but also serves to eliminate frictional resistance to the, outer side of the ,air curtain from nozzle it and thus causes the inner air curtain to be projected for a greater distance downwardly toward the floor I5 where it serves not only as a means for confining the smoke, etc. within the area but also it supplies the carrier fluid needed for withdrawing the contaminated material. In addition, the outer curtain of air as it approaches the floor [5 turns inwardly to provide additional carrier fluid serving as the conveying means for removal of the contaminant.
In the foregoing description, a specific embodiment has been set out and described in connection with a specific form of ventilating exhaust. It will be understood that there are many forms in which the air curtains. may be employed and in which the methods described herein may be used.
While in the foregoing specification, I have set forth a specific structural embodiment in great detail for the purpose of illustrating the invention, it will be understood that the details of such structure and of the method steps de scribed may be varied widely by those skilled in the art without departing from the spirit of my invention.
I claim:
1. In ventilating exhaust apparatus for the treating of a rising column of gas, a hood having an inlet opening, supporting means for said hood and supporting the inlet portion of said hood at an inclination with respect to said rising column of gas whereby the lower portion of said hood is at one side of said column and the upper portion of said hood extends into said, column, a suction pipe communicating with said hood, and a pair of pipes provided with elongated parallel discharge openings supported adjacent the upper forward edge portion of said hood, said outlets being directed outwardly and downwardly across said rising column of gas, and means for discharging air through said outlet openings to form parallel curtains of air across said rising column and on the outer side thereof opposite said hood.
2. In a method for treating a rising column of gas, the steps of withdrawing a portion of said rising column in a stream along one side of said rising column, discharging a curtain of air about the opposite side of said column of gas, heating a body of air and discharging a portion thereof in a plane substantially parallel with and contiguous with the path of said first-mentioned curtain of air to provide a warm curtain of air about said first-mentioned curtain.
3. In ventilating exhaust apparatus for the treating of a rising column of gas, a hood casing providing a chamber having an inlet opening along one side of said rising column of gas, supporting means for said hood, a suction pipe communicating with said hood, a casing providing a pair of discharge chambers adjacent the upper forward edge portion of said hood, and a pair of pipes leading from different sources of air separately to and communicating with said casing chambers, said discharge openings being directed outwardly and downwardly across said rising column of gas.
4. In a method for treating a rising column of gas, the steps of withdrawing a portion of said rising column in a stream along one side of said rising column, discharging a curtain of air about the opposite side of said column of gas, collecting a body of air cleaner than the air forming said first-mentioned curtain, and discharging the same in a plane substantially parallel with and contiguous to the path of said first-mentioned curtain of air to provide a protective curtain of air about said first-mentioned curtain.
CLAUDE B. SCI-INEIBLE.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,185,919 Kurth Jan. 2, 1940 2,210,458 Keilholtz Aug. 6, 19%0 2,257,516 Roche, Jr. et a1. Sept. 30, 1941 2,438,606 I-Iulton Mar. 30, 1948 2,579,401 Schneible et al Dec. 18, 1951
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20666A US2593702A (en) | 1948-04-13 | 1948-04-13 | Gaseous curtain for ventilating exhaust |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20666A US2593702A (en) | 1948-04-13 | 1948-04-13 | Gaseous curtain for ventilating exhaust |
Publications (1)
Publication Number | Publication Date |
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US2593702A true US2593702A (en) | 1952-04-22 |
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ID=21799888
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US20666A Expired - Lifetime US2593702A (en) | 1948-04-13 | 1948-04-13 | Gaseous curtain for ventilating exhaust |
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Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2775187A (en) * | 1954-02-18 | 1956-12-25 | Cloise M Mcclurkin | Air circulating door for refrigerator |
US2819666A (en) * | 1955-12-14 | 1958-01-14 | Kirk & Blum Mfg Company | Laboratory fume hood |
US2862369A (en) * | 1956-08-30 | 1958-12-02 | Edward W Simons | Air conditioned display compartment and method |
US2875748A (en) * | 1953-01-08 | 1959-03-03 | Leitner Equipment Company | Flue structure for food service equipment unit |
US2908212A (en) * | 1957-09-30 | 1959-10-13 | Ross Engineering Of Canada Ltd | Vapor confining air curtain for paper machines |
US3010379A (en) * | 1958-05-19 | 1961-11-28 | Carrier Corp | Air distribution system for a food display case |
US3023688A (en) * | 1958-05-16 | 1962-03-06 | Jr Fred A Kramer | Air barrier |
US3131688A (en) * | 1962-10-08 | 1964-05-05 | Gen Electric | Air treatment means for domestic cooking appliances |
US3318223A (en) * | 1965-08-06 | 1967-05-09 | Crest Engineering Inc | Method and means for disposal of waste gas |
US4038974A (en) * | 1975-04-18 | 1977-08-02 | Pielkenrood-Vinitex B. V. | Apparatus for producing a germ-free air flow in the vicinity of an operating table |
FR2530163A1 (en) * | 1982-07-15 | 1984-01-20 | Commissariat Energie Atomique | METHOD FOR CONFINING POLLUTION OF A LOCAL USING A GASOLINE VEIN |
US4576619A (en) * | 1983-02-02 | 1986-03-18 | Smith Kline & French Laboratories Limited | Dust recovery apparatus |
WO1989011928A1 (en) * | 1988-06-10 | 1989-12-14 | Halton Oy | Focussed ventilation procedure and focussed ventilation means |
US5145459A (en) * | 1990-03-14 | 1992-09-08 | SGN-Societe General Pour les Techniques Nouvelles | Process and apparatus for the dynamic separation of two zones |
US5326314A (en) * | 1993-02-24 | 1994-07-05 | Brockway Mechanical And Roofing Company, Inc. | Method and system of cleaning industrial air |
US5622538A (en) * | 1995-03-28 | 1997-04-22 | Helical Dynamics, Inc. | Source capture sytem for an air cleaning system |
EP1462730A1 (en) * | 2003-03-25 | 2004-09-29 | Kampmann GmbH | Device for creating an air curtain |
US20060157878A1 (en) * | 2003-07-07 | 2006-07-20 | Ethypharm | Installation comprising a machine for the production of tablets which are intented, in particular, for therapeutic use |
WO2019131513A1 (en) * | 2017-12-25 | 2019-07-04 | ダイキン工業株式会社 | Air conditioning unit and air conditioning system |
WO2020089572A1 (en) * | 2018-11-01 | 2020-05-07 | CPA Engineered Solutions Limited | Air barrier |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2185919A (en) * | 1938-01-15 | 1940-01-02 | Franz J Kurth | Ventilating device |
US2210458A (en) * | 1936-11-16 | 1940-08-06 | Lester S Keilholtz | Method of and apparatus for air conditioning |
US2257516A (en) * | 1938-03-01 | 1941-09-30 | Binks Mfg Co | Operator-protecting spray booth |
US2438606A (en) * | 1944-03-16 | 1948-03-30 | Kirk & Blum Mfg Company | Pneumatic canopy |
US2579401A (en) * | 1948-03-17 | 1951-12-18 | Schneible | Gas treating apparatus and method |
-
1948
- 1948-04-13 US US20666A patent/US2593702A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210458A (en) * | 1936-11-16 | 1940-08-06 | Lester S Keilholtz | Method of and apparatus for air conditioning |
US2185919A (en) * | 1938-01-15 | 1940-01-02 | Franz J Kurth | Ventilating device |
US2257516A (en) * | 1938-03-01 | 1941-09-30 | Binks Mfg Co | Operator-protecting spray booth |
US2438606A (en) * | 1944-03-16 | 1948-03-30 | Kirk & Blum Mfg Company | Pneumatic canopy |
US2579401A (en) * | 1948-03-17 | 1951-12-18 | Schneible | Gas treating apparatus and method |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875748A (en) * | 1953-01-08 | 1959-03-03 | Leitner Equipment Company | Flue structure for food service equipment unit |
US2775187A (en) * | 1954-02-18 | 1956-12-25 | Cloise M Mcclurkin | Air circulating door for refrigerator |
US2819666A (en) * | 1955-12-14 | 1958-01-14 | Kirk & Blum Mfg Company | Laboratory fume hood |
US2862369A (en) * | 1956-08-30 | 1958-12-02 | Edward W Simons | Air conditioned display compartment and method |
US2908212A (en) * | 1957-09-30 | 1959-10-13 | Ross Engineering Of Canada Ltd | Vapor confining air curtain for paper machines |
US3023688A (en) * | 1958-05-16 | 1962-03-06 | Jr Fred A Kramer | Air barrier |
US3010379A (en) * | 1958-05-19 | 1961-11-28 | Carrier Corp | Air distribution system for a food display case |
US3131688A (en) * | 1962-10-08 | 1964-05-05 | Gen Electric | Air treatment means for domestic cooking appliances |
US3318223A (en) * | 1965-08-06 | 1967-05-09 | Crest Engineering Inc | Method and means for disposal of waste gas |
US4038974A (en) * | 1975-04-18 | 1977-08-02 | Pielkenrood-Vinitex B. V. | Apparatus for producing a germ-free air flow in the vicinity of an operating table |
US4576613A (en) * | 1982-07-15 | 1986-03-18 | Commissariat A L'energie Atomique | Process for confining the pollution in an area |
EP0099818A1 (en) * | 1982-07-15 | 1984-02-01 | Commissariat à l'Energie Atomique | Method of confining the pollution of an area by making use of an air curtain |
FR2530163A1 (en) * | 1982-07-15 | 1984-01-20 | Commissariat Energie Atomique | METHOD FOR CONFINING POLLUTION OF A LOCAL USING A GASOLINE VEIN |
US4576619A (en) * | 1983-02-02 | 1986-03-18 | Smith Kline & French Laboratories Limited | Dust recovery apparatus |
WO1989011928A1 (en) * | 1988-06-10 | 1989-12-14 | Halton Oy | Focussed ventilation procedure and focussed ventilation means |
US5145459A (en) * | 1990-03-14 | 1992-09-08 | SGN-Societe General Pour les Techniques Nouvelles | Process and apparatus for the dynamic separation of two zones |
US5326314A (en) * | 1993-02-24 | 1994-07-05 | Brockway Mechanical And Roofing Company, Inc. | Method and system of cleaning industrial air |
US5622538A (en) * | 1995-03-28 | 1997-04-22 | Helical Dynamics, Inc. | Source capture sytem for an air cleaning system |
EP1462730A1 (en) * | 2003-03-25 | 2004-09-29 | Kampmann GmbH | Device for creating an air curtain |
US20060157878A1 (en) * | 2003-07-07 | 2006-07-20 | Ethypharm | Installation comprising a machine for the production of tablets which are intented, in particular, for therapeutic use |
WO2019131513A1 (en) * | 2017-12-25 | 2019-07-04 | ダイキン工業株式会社 | Air conditioning unit and air conditioning system |
JP2019113257A (en) * | 2017-12-25 | 2019-07-11 | ダイキン工業株式会社 | Air-conditioning unit and air-conditioning system |
CN111512095A (en) * | 2017-12-25 | 2020-08-07 | 大金工业株式会社 | Air conditioning unit and air conditioning system |
CN111512095B (en) * | 2017-12-25 | 2021-08-03 | 大金工业株式会社 | Air conditioning unit and air conditioning system |
WO2020089572A1 (en) * | 2018-11-01 | 2020-05-07 | CPA Engineered Solutions Limited | Air barrier |
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