CA1210287A - Heating process and its apparatus in reducing air pressure within a chamber at a balanced level - Google Patents
Heating process and its apparatus in reducing air pressure within a chamber at a balanced levelInfo
- Publication number
- CA1210287A CA1210287A CA000430561A CA430561A CA1210287A CA 1210287 A CA1210287 A CA 1210287A CA 000430561 A CA000430561 A CA 000430561A CA 430561 A CA430561 A CA 430561A CA 1210287 A CA1210287 A CA 1210287A
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- Canada
- Prior art keywords
- chamber
- air
- air pressure
- reduced
- outer air
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
- F24V40/00—Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/30—Friction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Sustainable Development (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Drying Of Solid Materials (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
TITLE OF THE INVENTION
Heating Process and Its Apparatus in Reducing Air Pressure Within a Chamber at a Balanced Level ABSTRACT
This invention relates to a heating process and its apparatus in reducing air pressure within a chamber at a balanced level. The air retained within the chamber or the air suctioned through an outer air suction means is suctioned forcibly by rotation of rotary means disposed in the chamber and discharged outside the chamber through an inner air discharge means until air pressure within the chamber is reduced to a balanced level. Meanwhile, air friction heat is generated by continuous rotation of the rotary means, thereby the interior of the chamber is heated by air friction heat. And, a cooled outer air suctioned by the outer air suction means is heat-exchanged with a heated air energy discharged by the inner air discharge means.
Heating Process and Its Apparatus in Reducing Air Pressure Within a Chamber at a Balanced Level ABSTRACT
This invention relates to a heating process and its apparatus in reducing air pressure within a chamber at a balanced level. The air retained within the chamber or the air suctioned through an outer air suction means is suctioned forcibly by rotation of rotary means disposed in the chamber and discharged outside the chamber through an inner air discharge means until air pressure within the chamber is reduced to a balanced level. Meanwhile, air friction heat is generated by continuous rotation of the rotary means, thereby the interior of the chamber is heated by air friction heat. And, a cooled outer air suctioned by the outer air suction means is heat-exchanged with a heated air energy discharged by the inner air discharge means.
Description
~2~0~17 BACKGROUND OF THE INVENTION
This invention relates to a heating process and its apparatus in reducing air pressure within a chamber at a balanced level.
The origin of this invention is based on Canadian Patent Application ~o. 381,449 entitled "Heating process and its apparatus in reducing air pressure within a chamber at a balanced level" which was invented by the present Applicant. And, the Official Notice of Allowance of the above application has now been received. Based upon the above basic Canadian Patent Application, the Applicant has developed various related techniques and filed the corresponding Canadian Patent Applications Serial Nos.
396,388, 399,526 and 424,467. Referring to the principle of the aforesaid Canadian Patent Applications and related techniques, the air within a chamber is suctioned forcibly and discharged thereoutside by rotation of rotary means disposed in the chamber. As a result, the air pressure therewithin gets reduced and after a short lapse of time a difference between a reduced air pressure within the chamber and a normal air pressure thereoutside is main-tained at a balanced level. Under such circumstances, air friction heat is generated by continuous rotation of the rotary means, thereby the chamber inside is heated by air friction and can be utilized as a heat source. Further, if necessary, it is feasible to dry the wet articles in-corporated in the chamber by feeding a certain amount.
~ `~
9 Z~ 7 outer air into the chamber manually or automatically.
Accordingly, this technology is being highly evaluated because it can be applied widely for various industrial circles engaging in drying and heat generation.
When drying those wet articles, it will be very useful to carry out effectively without heat loss a drying treatment to discharge a heated gas containing an evapo-rated content equivalent to a certain quantity of cooled outer air suctioned from the outside which should be supplied into the chamber heated at reduced air pressure.
From this point of view, this invention has been achieved.
BRIEF SUMMARY OF THE INVENTION
It is an object of this invention to provide a heating process and its apparatus in reducing air pressure within a chamber at a balanced level, wherein the outer air suction function and the inner air discharge function are simulta-neously actuated in mutually opposite direction in the area of a heat exchange means. That is to say, a low temperature outer air to be suctioned from the outside is heat-exchanged with a high temperature inner air to be discharged. In other words, the former is absorbed by the latter, thereby a nearly complete heat exchange is carried out and heat loss is prevented. Accordingly, the temperature decrease of the chamber can be prevented.
When reducing continuously air pressure within a chamber at a balanced level while making the quantity of the outer ~10~
air suction lesser than that of the inner air discharge, the air temperature of the chamber does not fall, but begins to rise. Accordingly, if a user wishes to decrease the temperature rapidly, it is required to supply a certain quantity of outer air into the chamber by installing one or more outer air introducing means therein. Particularly, when drying various kinds of wet articles, it is well-known that it is required to control the temperature condition of the chamber and the heating time to a desired level. Other-wise, the quality of the dried articles might be worsened.
It is another object of this invention to provide aheating process and its apparatus in reducing air pressure within a chamber at a balanced level, wherein even if the outer air is suctioned by the outer air suction means and the air within the chamber is communicated with the outer air, it is possible to continue to reduce air pressure within the chamber at a balanced level. Further, if necessary, it is possible to decrease the chamber temper-ature rapidly or discharge an evaporated water content of the chamber rapidly thereoutside by installing the outer air introducing means for supplying the outer air directly into the chamber.
Other and further objects, features and advantages of this invention will appear more fully from the following description taken in connection with the accompanying drawings.
12102~`7 BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 is a longitudinal section view of an example of a heating apparatus in reducing air pressure within a chamber at a balanced level according to this invention.
Fig. 2a is a partially cutaway rear view taken on line II-II of Fig. 1.
Fig. 2b is a partially enlarged section view of a heat exchange means of Fig. 2a.
Fig. 3 is a section view taken on line III-III of Fig. 1.
DETAILED DESCRIPTION OF THE INVENTION
A preferred example of this invention will now be described with reference to the accompanying drawings.
Numeral 1 is a chamber which is closed by a door 2 and shielded by two external walls, between which is incorporated a heat insulating material 3. Numeral 4 is air friction heat generating means comprising a motor 5, one fan or a plurality of fans 6 and a cylinder 7 covering the fans 6. Between the fans 6 and the cylinder 7 is formed a slight gap g. Numeral 8 is air friction heat generating means which is formed in the space where the plurality of fans 6 are rotated. Owing to the slight gap g, the air friction effect is enhanced. It is of course optional to modify a size of the fan 6, the number of vanes 6a, an inclination of each vane 6a, a distance between
This invention relates to a heating process and its apparatus in reducing air pressure within a chamber at a balanced level.
The origin of this invention is based on Canadian Patent Application ~o. 381,449 entitled "Heating process and its apparatus in reducing air pressure within a chamber at a balanced level" which was invented by the present Applicant. And, the Official Notice of Allowance of the above application has now been received. Based upon the above basic Canadian Patent Application, the Applicant has developed various related techniques and filed the corresponding Canadian Patent Applications Serial Nos.
396,388, 399,526 and 424,467. Referring to the principle of the aforesaid Canadian Patent Applications and related techniques, the air within a chamber is suctioned forcibly and discharged thereoutside by rotation of rotary means disposed in the chamber. As a result, the air pressure therewithin gets reduced and after a short lapse of time a difference between a reduced air pressure within the chamber and a normal air pressure thereoutside is main-tained at a balanced level. Under such circumstances, air friction heat is generated by continuous rotation of the rotary means, thereby the chamber inside is heated by air friction and can be utilized as a heat source. Further, if necessary, it is feasible to dry the wet articles in-corporated in the chamber by feeding a certain amount.
~ `~
9 Z~ 7 outer air into the chamber manually or automatically.
Accordingly, this technology is being highly evaluated because it can be applied widely for various industrial circles engaging in drying and heat generation.
When drying those wet articles, it will be very useful to carry out effectively without heat loss a drying treatment to discharge a heated gas containing an evapo-rated content equivalent to a certain quantity of cooled outer air suctioned from the outside which should be supplied into the chamber heated at reduced air pressure.
From this point of view, this invention has been achieved.
BRIEF SUMMARY OF THE INVENTION
It is an object of this invention to provide a heating process and its apparatus in reducing air pressure within a chamber at a balanced level, wherein the outer air suction function and the inner air discharge function are simulta-neously actuated in mutually opposite direction in the area of a heat exchange means. That is to say, a low temperature outer air to be suctioned from the outside is heat-exchanged with a high temperature inner air to be discharged. In other words, the former is absorbed by the latter, thereby a nearly complete heat exchange is carried out and heat loss is prevented. Accordingly, the temperature decrease of the chamber can be prevented.
When reducing continuously air pressure within a chamber at a balanced level while making the quantity of the outer ~10~
air suction lesser than that of the inner air discharge, the air temperature of the chamber does not fall, but begins to rise. Accordingly, if a user wishes to decrease the temperature rapidly, it is required to supply a certain quantity of outer air into the chamber by installing one or more outer air introducing means therein. Particularly, when drying various kinds of wet articles, it is well-known that it is required to control the temperature condition of the chamber and the heating time to a desired level. Other-wise, the quality of the dried articles might be worsened.
It is another object of this invention to provide aheating process and its apparatus in reducing air pressure within a chamber at a balanced level, wherein even if the outer air is suctioned by the outer air suction means and the air within the chamber is communicated with the outer air, it is possible to continue to reduce air pressure within the chamber at a balanced level. Further, if necessary, it is possible to decrease the chamber temper-ature rapidly or discharge an evaporated water content of the chamber rapidly thereoutside by installing the outer air introducing means for supplying the outer air directly into the chamber.
Other and further objects, features and advantages of this invention will appear more fully from the following description taken in connection with the accompanying drawings.
12102~`7 BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 is a longitudinal section view of an example of a heating apparatus in reducing air pressure within a chamber at a balanced level according to this invention.
Fig. 2a is a partially cutaway rear view taken on line II-II of Fig. 1.
Fig. 2b is a partially enlarged section view of a heat exchange means of Fig. 2a.
Fig. 3 is a section view taken on line III-III of Fig. 1.
DETAILED DESCRIPTION OF THE INVENTION
A preferred example of this invention will now be described with reference to the accompanying drawings.
Numeral 1 is a chamber which is closed by a door 2 and shielded by two external walls, between which is incorporated a heat insulating material 3. Numeral 4 is air friction heat generating means comprising a motor 5, one fan or a plurality of fans 6 and a cylinder 7 covering the fans 6. Between the fans 6 and the cylinder 7 is formed a slight gap g. Numeral 8 is air friction heat generating means which is formed in the space where the plurality of fans 6 are rotated. Owing to the slight gap g, the air friction effect is enhanced. It is of course optional to modify a size of the fan 6, the number of vanes 6a, an inclination of each vane 6a, a distance between
2~
adjacent fans 6, the number of fan 6, etc. As disclosed in Canadian Patent Application No. 424,467, the rotary means can be equipped with multistage fans. The fan 6 such as a propeller fan, a sirocco fan or the like com-prising rotary vanes 6a which are provided with a certaininclination so as to suction and discharge the air within the chamber 1.
A heat exchange means A consisting of an inner air discharge means 9 and an outer air suction means 13 will now be described.
The inner air discharge means 9 is communicated with an opening 4a of the discharge side of the air friction heat generating means 4 and further communicated with the outside of the chamber 1.
The inner air discharge means 9 comprises a large number of heat exchange plates 10 in parallel with each other, a large number of heat exchange pipes 11 inter-sected with a right angle relative to the heat exchange plates 10 and a passage 12 formed outside the heat exchange pipes 11.
Numeral 13 is an outer air suction means which is incorporated integrally in the inner air discharge means 9.
~umeral 14 is a tubular body formed outside the inner air discharge means 9, which comprises spaces 14a, 14a of two rows along both openings lla, lla of the large number of heat exchange pipes 1~. In the spaces 14a, 14a of two rows are disposed a large number of partitions 15 biassed with 8~
each other. Further, the tubular body 14 comprises a passage 1~ formed in a zigzag type from a valve port 16 of the outer air suction means 13 toward an opening 17 communicated with the chamber 1, and such zigzag passage 18 is formed along the heat exchange pipes 11 and the partitions 15.
It is optional to open or close the valve port 16 of the outer air suction means 13 by a timer or manually in order to control the air temperature of the chamber 1.
Numeral 13a is outer air introducing means connected directly with the chamber 1, which comprises a valve V
controllable either manually or automatically and a pipe P. When it is required to decrease the air temperature in the chamber 1 rapidly, the valve V may be opened in accordance with the instructions of a controller (not illustrated). It is optional to connect a plurality of outer air introducing means 13a.to the chamber 1.
Numeral 19 is an inner air introducing cylinder which is disposed below an opening 4b of the air suction side of the air friction heat generating means 4. Numeral 20 is an air circulating tube having an opening 22 communicated with the chamber 1. Numeral 21 is a partition wall for covering the air friction heat generating means 4. Numeral 23 is also an opening for circulating the inner air.
Numeral 24 is a small-sized conduit for introduclng outer air to prevent the motor 5 from overheating.
., ~2~0287 The heating process of this invention will now be described.
When the motor 5 is energized, a plurality of fans 6 are rotated and the air within the closed chamber 1 is suctioned forcibly and discharged thereoutside through the inner air discharge means by the air suction and dis-charge function of the plurality of fans 6. As a result, the air pressure within the chamber 1 is gradually reduced. Then, a difference between a reduced air pressure within the chamber 1 and a normal air pressure thereoutside becomes larger gradually, but after a short lapse of time the difference therebetween is maintained at a balanced level.
In the reduced balanced air pressure within the cham-ber, an air retaining phenomenon is generated in the airfriction heat generating area 8 in a rotation area of the fans 6. That is, the vanes 6a are rotated continuously in the slight gap g of the air friction heat generating area 8, air friction heat is generated and its temperature is gradually raised. The thus heated air friction heat is spread uniformly throughout the chamber 1 and the chamber may be heated at a desired temperature.
Accordingly, when wet articles are disposed within the chamber 1, an acqueous content in each article is removed by the air pressure reduction effect within the chamber 1.
In addition to this, owing to the air friction heat effect, :, :
~L2~287 the chamber temperature is raised, thereby all the wet articles disposed in the chamber are heated. Thus, drying treatment of those articles, extract treatment of their water content or the like can be carried out efficiently.
S When opening the valve port 16 of the outer air introducing means 13 by the timer or in view of the tem-perature of the chamber 1, the outer air is supplied and dispersed into the chamber 1 while meandering in a zigzag line by way of the passage 18 through the large number of heat exchange pipes 11 and the spaces 14a, 14a of two rows.
Then, the quantity of the water containing gas in the chamber 1 which is equivalent to the introducing quantity of the outer air is discharged outside the chamber by way of the inner air discharge means 9 of the air friction heat generating means 4. When the discharge quantity of the heated inner air is more than the introducing quantity of the outer air, the degree of the air pressure reduction in the chamber 1 is decreased somewhat in comparing with the condition that the valve port 16 is sealed, but the air pressure reduction effect is maintained at a balanced level and the heat generation function is continued, thereby the temperature is raised.
When an operator wishes to decrease the chamber tem-perature speedily, the outer air can be fully introduced into the chamber by opening the valve V of the outer air introducing means 13a. Thus, the difference between the ~L21~287 air pressure within the chamber 1 and the normal pressure thereoutside disappears and the chamber temperature can drop rapidly to a desired level.
According to a usual operation of this invention, the valve port 16 of the outer air introducing means 13 is first of all sealed.
In such a completely sealed condition, the air pressure within the chamber 1 is reduced at a balanced level. Subsequently, the valve port 16 is opened.
Further, the valve V of the outer air introducing means 13a is opened. However, the chamber temperature can also be raised even in the condition that the valve port 16 of the outer air suction means 13 is opened in advance prior to operation, the air in the chamber is somewhat communi-cated with the outer air and consequently the degree of ; the air pressure reduction effect is lower than that in the completely sealed state of the chamber 1. And, the outer air introducing means 13a can be of course utilized for decreasing the chamber temperature.
Since the inner air discharge means 9 comprises a large number of heat exchange plates 10 and a large number of heat exchange pipes 11, the inner air heated in the chamber is effectively heat-exchanged with the outer air passed through the large number of heat exchange pipes 11 by way of the outer air suction means 13. As a result, a water content of the heated inner air is radiated and lZ~C~287 cooled, and it is removed completely as a coagulated water.
As shown in a number of arrows of Fig. 1, the air within the chamber 1 is effectively circulated by the arrangement of the inner air introducing cylinder 19, the circulation tube 20 and the side opening 23. Thus, the wet articles incorporated in the chamber 1 can be heated or dried efficiently.
According to one aspect of this invention, since the heat exchange means is formed by incorporating the outer air suction means integrally in the inner air discharge means, the outer air suction function and the inner air discharge function are actuated in mutually opposite direction, thereby a very efficient heat exchange is carried out. Thus, the temperature decrease of the chamger can be prevented.
Further, since the heat exchange is carried out effectively, the vaporized water content of the heated inner air can be coagulated and liquefied, thereby discharge of moist air is prevented. Thus, the heat exchange means is applicable for extraction of the water content or the like.
According to another aspect of this invention, by removing the outer air introducing means or by sealing the valve thereof, the chamber can be closed and heated in reducing air pressure therewithin at a balanced level.
In addition, even if the chamber is communicated with outer . . .
~L2~02~37 air by introducing it thereinto by way of the heat exchange means through the outer air suction means, the chamber can be heated in reducing air pressure therewithin at the balanced level. Accordingly, the apparatus of this inven-tion may be applied for drying, heating and other variousindustrial purpose by decreasing the chamber temperature rapidly by actuation of the outer air introducing means.
adjacent fans 6, the number of fan 6, etc. As disclosed in Canadian Patent Application No. 424,467, the rotary means can be equipped with multistage fans. The fan 6 such as a propeller fan, a sirocco fan or the like com-prising rotary vanes 6a which are provided with a certaininclination so as to suction and discharge the air within the chamber 1.
A heat exchange means A consisting of an inner air discharge means 9 and an outer air suction means 13 will now be described.
The inner air discharge means 9 is communicated with an opening 4a of the discharge side of the air friction heat generating means 4 and further communicated with the outside of the chamber 1.
The inner air discharge means 9 comprises a large number of heat exchange plates 10 in parallel with each other, a large number of heat exchange pipes 11 inter-sected with a right angle relative to the heat exchange plates 10 and a passage 12 formed outside the heat exchange pipes 11.
Numeral 13 is an outer air suction means which is incorporated integrally in the inner air discharge means 9.
~umeral 14 is a tubular body formed outside the inner air discharge means 9, which comprises spaces 14a, 14a of two rows along both openings lla, lla of the large number of heat exchange pipes 1~. In the spaces 14a, 14a of two rows are disposed a large number of partitions 15 biassed with 8~
each other. Further, the tubular body 14 comprises a passage 1~ formed in a zigzag type from a valve port 16 of the outer air suction means 13 toward an opening 17 communicated with the chamber 1, and such zigzag passage 18 is formed along the heat exchange pipes 11 and the partitions 15.
It is optional to open or close the valve port 16 of the outer air suction means 13 by a timer or manually in order to control the air temperature of the chamber 1.
Numeral 13a is outer air introducing means connected directly with the chamber 1, which comprises a valve V
controllable either manually or automatically and a pipe P. When it is required to decrease the air temperature in the chamber 1 rapidly, the valve V may be opened in accordance with the instructions of a controller (not illustrated). It is optional to connect a plurality of outer air introducing means 13a.to the chamber 1.
Numeral 19 is an inner air introducing cylinder which is disposed below an opening 4b of the air suction side of the air friction heat generating means 4. Numeral 20 is an air circulating tube having an opening 22 communicated with the chamber 1. Numeral 21 is a partition wall for covering the air friction heat generating means 4. Numeral 23 is also an opening for circulating the inner air.
Numeral 24 is a small-sized conduit for introduclng outer air to prevent the motor 5 from overheating.
., ~2~0287 The heating process of this invention will now be described.
When the motor 5 is energized, a plurality of fans 6 are rotated and the air within the closed chamber 1 is suctioned forcibly and discharged thereoutside through the inner air discharge means by the air suction and dis-charge function of the plurality of fans 6. As a result, the air pressure within the chamber 1 is gradually reduced. Then, a difference between a reduced air pressure within the chamber 1 and a normal air pressure thereoutside becomes larger gradually, but after a short lapse of time the difference therebetween is maintained at a balanced level.
In the reduced balanced air pressure within the cham-ber, an air retaining phenomenon is generated in the airfriction heat generating area 8 in a rotation area of the fans 6. That is, the vanes 6a are rotated continuously in the slight gap g of the air friction heat generating area 8, air friction heat is generated and its temperature is gradually raised. The thus heated air friction heat is spread uniformly throughout the chamber 1 and the chamber may be heated at a desired temperature.
Accordingly, when wet articles are disposed within the chamber 1, an acqueous content in each article is removed by the air pressure reduction effect within the chamber 1.
In addition to this, owing to the air friction heat effect, :, :
~L2~287 the chamber temperature is raised, thereby all the wet articles disposed in the chamber are heated. Thus, drying treatment of those articles, extract treatment of their water content or the like can be carried out efficiently.
S When opening the valve port 16 of the outer air introducing means 13 by the timer or in view of the tem-perature of the chamber 1, the outer air is supplied and dispersed into the chamber 1 while meandering in a zigzag line by way of the passage 18 through the large number of heat exchange pipes 11 and the spaces 14a, 14a of two rows.
Then, the quantity of the water containing gas in the chamber 1 which is equivalent to the introducing quantity of the outer air is discharged outside the chamber by way of the inner air discharge means 9 of the air friction heat generating means 4. When the discharge quantity of the heated inner air is more than the introducing quantity of the outer air, the degree of the air pressure reduction in the chamber 1 is decreased somewhat in comparing with the condition that the valve port 16 is sealed, but the air pressure reduction effect is maintained at a balanced level and the heat generation function is continued, thereby the temperature is raised.
When an operator wishes to decrease the chamber tem-perature speedily, the outer air can be fully introduced into the chamber by opening the valve V of the outer air introducing means 13a. Thus, the difference between the ~L21~287 air pressure within the chamber 1 and the normal pressure thereoutside disappears and the chamber temperature can drop rapidly to a desired level.
According to a usual operation of this invention, the valve port 16 of the outer air introducing means 13 is first of all sealed.
In such a completely sealed condition, the air pressure within the chamber 1 is reduced at a balanced level. Subsequently, the valve port 16 is opened.
Further, the valve V of the outer air introducing means 13a is opened. However, the chamber temperature can also be raised even in the condition that the valve port 16 of the outer air suction means 13 is opened in advance prior to operation, the air in the chamber is somewhat communi-cated with the outer air and consequently the degree of ; the air pressure reduction effect is lower than that in the completely sealed state of the chamber 1. And, the outer air introducing means 13a can be of course utilized for decreasing the chamber temperature.
Since the inner air discharge means 9 comprises a large number of heat exchange plates 10 and a large number of heat exchange pipes 11, the inner air heated in the chamber is effectively heat-exchanged with the outer air passed through the large number of heat exchange pipes 11 by way of the outer air suction means 13. As a result, a water content of the heated inner air is radiated and lZ~C~287 cooled, and it is removed completely as a coagulated water.
As shown in a number of arrows of Fig. 1, the air within the chamber 1 is effectively circulated by the arrangement of the inner air introducing cylinder 19, the circulation tube 20 and the side opening 23. Thus, the wet articles incorporated in the chamber 1 can be heated or dried efficiently.
According to one aspect of this invention, since the heat exchange means is formed by incorporating the outer air suction means integrally in the inner air discharge means, the outer air suction function and the inner air discharge function are actuated in mutually opposite direction, thereby a very efficient heat exchange is carried out. Thus, the temperature decrease of the chamger can be prevented.
Further, since the heat exchange is carried out effectively, the vaporized water content of the heated inner air can be coagulated and liquefied, thereby discharge of moist air is prevented. Thus, the heat exchange means is applicable for extraction of the water content or the like.
According to another aspect of this invention, by removing the outer air introducing means or by sealing the valve thereof, the chamber can be closed and heated in reducing air pressure therewithin at a balanced level.
In addition, even if the chamber is communicated with outer . . .
~L2~02~37 air by introducing it thereinto by way of the heat exchange means through the outer air suction means, the chamber can be heated in reducing air pressure therewithin at the balanced level. Accordingly, the apparatus of this inven-tion may be applied for drying, heating and other variousindustrial purpose by decreasing the chamber temperature rapidly by actuation of the outer air introducing means.
Claims (4)
1. A heating process for heating the interior of a chamber at reduced air pressure, comprising:
forcibly suctioning the air retained within said chamber or the air suctioned through an outer air suction means by rotation of rotary means disposed in said chamber;
discharging said air through an inner air discharge means outside said chamber until air pressure within said chamber is reduced to a balanced level;
maintaining a difference between the reduced air pressure within said chamber and the air pressure outside said chamber at said balanced level;
generating air friction heat by continuous rotation of said rotary means and heating the interior of said chamber by said air friction heat; and heat-exchanging a heated air energy discharged by said inner air discharge means with a cooled outer air suctioned by said outer air suction means.
forcibly suctioning the air retained within said chamber or the air suctioned through an outer air suction means by rotation of rotary means disposed in said chamber;
discharging said air through an inner air discharge means outside said chamber until air pressure within said chamber is reduced to a balanced level;
maintaining a difference between the reduced air pressure within said chamber and the air pressure outside said chamber at said balanced level;
generating air friction heat by continuous rotation of said rotary means and heating the interior of said chamber by said air friction heat; and heat-exchanging a heated air energy discharged by said inner air discharge means with a cooled outer air suctioned by said outer air suction means.
2. A heating process for heating the interior of a chamber at reduced air pressure, comprising:
forcibly suctioning the air retained within said chamber or the air suctioned through an outer air suction means by rotation of rotary means disposed in said chamber;
discharging said air through an inner air discharge means outside said chamber until air pressure within said chamber is reduced to a balanced level;
maintaining a difference between the reduced air pressure within said chamber and the air pressure outside said chamber at said balanced level;
generating air friction heat by continuous rotation of said rotary means and heating the interior of said chamber by said air friction heat;
heat-exchanging a heated air energy discharged by said inner air discharge means with a cooled outer air suctioned by said outer air suction means; and supplying outer air directly into the interior of said chamber by way of an outer air introducing means.
forcibly suctioning the air retained within said chamber or the air suctioned through an outer air suction means by rotation of rotary means disposed in said chamber;
discharging said air through an inner air discharge means outside said chamber until air pressure within said chamber is reduced to a balanced level;
maintaining a difference between the reduced air pressure within said chamber and the air pressure outside said chamber at said balanced level;
generating air friction heat by continuous rotation of said rotary means and heating the interior of said chamber by said air friction heat;
heat-exchanging a heated air energy discharged by said inner air discharge means with a cooled outer air suctioned by said outer air suction means; and supplying outer air directly into the interior of said chamber by way of an outer air introducing means.
3. A heating apparatus comprising:
a sealable chamber having outer air introducing means for introducing outer air directly into said chamber;
rotary means disposed within said chamber to reduce air pressure in said chamber to a reduced balanced level by forcibly suctioning the air retained in said chamber through an inner air discharge means adjacent said rotary means and discharging said air outside said chamber; said rotary means effective to maintain a difference between the reduced air pressure within said chamber and the air pressure outside said chamber at said reduced balanced level and to heat the interior of said chamber; and a heat exchange means in which an outer air suction means is integrally incorporated in said inner air dis-charge means.
a sealable chamber having outer air introducing means for introducing outer air directly into said chamber;
rotary means disposed within said chamber to reduce air pressure in said chamber to a reduced balanced level by forcibly suctioning the air retained in said chamber through an inner air discharge means adjacent said rotary means and discharging said air outside said chamber; said rotary means effective to maintain a difference between the reduced air pressure within said chamber and the air pressure outside said chamber at said reduced balanced level and to heat the interior of said chamber; and a heat exchange means in which an outer air suction means is integrally incorporated in said inner air dis-charge means.
4. The heating apparatus as claimed in claim 3,wherein said chamber is provided with a plurality of outer air introducing means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57-106679 | 1982-06-23 | ||
| JP57106679A JPS58224269A (en) | 1982-06-23 | 1982-06-23 | Method of pressure reduced equilibrium heating and apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1210287A true CA1210287A (en) | 1986-08-26 |
Family
ID=14439747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000430561A Expired CA1210287A (en) | 1982-06-23 | 1983-06-16 | Heating process and its apparatus in reducing air pressure within a chamber at a balanced level |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS58224269A (en) |
| BR (1) | BR8303311A (en) |
| CA (1) | CA1210287A (en) |
| ES (1) | ES523843A0 (en) |
| FR (1) | FR2529310B1 (en) |
| SE (1) | SE446659B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158222B (en) * | 1984-05-04 | 1987-11-18 | Nobuyoshi Kuboyama | Heated chambers for growing plants |
| FR2648547B1 (en) * | 1989-06-20 | 1991-10-18 | Preau Prosper | CALORIE RECOVERY FOR DIRECT VENT DRYERS |
| FR2914734B1 (en) * | 2007-04-05 | 2010-06-11 | Innovation Technologique Pour | METHOD FOR DRYING WOOD AND DEVICE FOR IMPLEMENTING IT |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3040159C2 (en) * | 1980-07-10 | 1985-05-02 | Kuboyama, Nobuyoshi, Miyamori, Iwate | Device for heating a gaseous medium |
-
1982
- 1982-06-23 JP JP57106679A patent/JPS58224269A/en active Pending
-
1983
- 1983-06-16 CA CA000430561A patent/CA1210287A/en not_active Expired
- 1983-06-21 SE SE8303547A patent/SE446659B/en not_active IP Right Cessation
- 1983-06-22 FR FR8310302A patent/FR2529310B1/en not_active Expired
- 1983-06-22 BR BR8303311A patent/BR8303311A/en unknown
- 1983-06-22 ES ES523843A patent/ES523843A0/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2529310A1 (en) | 1983-12-30 |
| FR2529310B1 (en) | 1987-01-09 |
| SE8303547D0 (en) | 1983-06-21 |
| ES8405499A1 (en) | 1984-06-16 |
| ES523843A0 (en) | 1984-06-16 |
| SE446659B (en) | 1986-09-29 |
| SE8303547L (en) | 1983-12-24 |
| JPS58224269A (en) | 1983-12-26 |
| BR8303311A (en) | 1984-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |