CA1192412A - Drycleaning machine - Google Patents
Drycleaning machineInfo
- Publication number
- CA1192412A CA1192412A CA000415769A CA415769A CA1192412A CA 1192412 A CA1192412 A CA 1192412A CA 000415769 A CA000415769 A CA 000415769A CA 415769 A CA415769 A CA 415769A CA 1192412 A CA1192412 A CA 1192412A
- Authority
- CA
- Canada
- Prior art keywords
- air current
- solvent
- drum
- heat exchanger
- tubes
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
- D06F43/08—Associated apparatus for handling and recovering the solvents
- D06F43/086—Recovering the solvent from the drying air current
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
Title :"Drycleaning machine"
ABSTRACT OF THE DISCLOSURE
The invention relates a drycleaning machine having a open or closed ventilation and drying circuit for recovering solvent from the cleaned clothes. Within said circuit a heat exchanger is inserted with a cooling part downstream the machine drum and upstream solvent condenser, and with warming part upstream the air flow heater.
ABSTRACT OF THE DISCLOSURE
The invention relates a drycleaning machine having a open or closed ventilation and drying circuit for recovering solvent from the cleaned clothes. Within said circuit a heat exchanger is inserted with a cooling part downstream the machine drum and upstream solvent condenser, and with warming part upstream the air flow heater.
Description
~9~
This invention relates to a drycleaning ~achine ~or clothes or the like.
It is well known that, in drycleaning machines, aEter a washing phase by means of a solvent, a cloth venti-lation and dryin~ phase takes place. This ventila-tion and drying phase is carried out by ~orcing, through -the machine drum, an air curren-t which is warmed-up by high temperature heating means. Said air enters the drum in a purified condi-tion and leaves said drum with -the solven-t picked-up from clothes. Outside -the drum, the air current is cooled to condense the solvent. The same ai.r current (in case o~
closed circuit) or a fresh one (in case of open circui-t) is then passed through heating means that bring the same to a suitably high temperature. This operation of -the solvent cir-cuit involves a high energy consump-tion, in particular due to heating means which are usually electrically operated.
The present invention provides a drycleaning machine wherein such an energy consumption is reduced.
Accordingly, this invention provides a drycleaning machine, having an open orClosed solvent circuit, wherein at leas-t one heat exchanger is placed in the ventila-tion and drying circuit, in heat exchange conditions respectively wi-th the warm air current flowing downstream the machine drum and up-stream the solvent condenser, and wi-th the cool air current flowing upstream the air hea-ting means. Preferably, the heat exchanger is of the continuous type, with warm air inner paths, for instance in the form of tubes, and with cool air inner paths, for instance obtained in the heat exchanger inner volume outside said tubes. Said heat exchanger is suitably slanted -toward the horizontal, so to allow draining of condensed solvent from the tubes thereof.
The single Figure of the accompanying drawing is a ,~
diagram~atic cross-section of a drycleaning machine according to the invention.
With reference to -the drawingt -the drycleaning machine or plant Eor clo-thes or -the like according -to the in-vention is diagrammatically shown only in its means as neces-sary for the understanding of -the invention. Said machine has a base A carrying a frame B which comprises a chamber C where-in a riddled washing drum D is housed. Said drum can rotate around a horizontal axis X-X and houses -the clothes or the like lG to be cleaned. Said chamber C communica-tes wi-th a fur-ther chamber F which is supported by the machine frame and houses a filter 12 for the air flow, circulating along a ventilation and drying circui-t as depicted by -the arrows.
Said filter may be of any suitable type and re-tains any down or impurity drawn-up from the clothes 10 during -the ven-tila-tion and drying step. A s-tanding-up duc-t 14 communica-tes said chamber F with a blower-aspirator G of the vertical axis type, having a fan operated by a motor H.
The air current as delivered by element G is fed to a divergent collector-fitting 18 which is sealingly fixed to a first end 20 of a housing L containing a heat exchanger M
of -the parallel tube type.
The opposite end 24 of such housing L is sealingly fixed to a divergent collector duct N wherein a cooling means P, in particular an evaporator of a refrigerating machine, is housed. Said duct N has a plug 28 at the end of i-ts slanting lower wall, to discharge the solvent as drawn by -the warm air flowing -through the tubes 22 of heat exchanger M (arrows Y) and condensed within the cooler P.
The heat exchanger M has free spaces 30 between its parallel tubes 22 t is placed downstream the blower G and upstream the cooler P and is downwardly slanting from i-ts end 20 to its end 24.
Downstream the cooler P, a diverging chamher Q is connec-ted, by means of a duct 32, wi-th a volume R which is defined within the hea-t exchanger M, by -the free spaces 30 between the hea-t exchanger -tubes 22, said duct 32 comprising an ou-tlet 34 from chamber Q and an inlet 36 -to the volume R.
Reference 38 shows baffle means to define a -tor-tuous path for -the air current, as depic-ted by arrows 40 within the hea-t exchanger M.
A duct 42 is connec-ted to an outle-t end of volume R, in order to convey the air flow according to arrows 44 and 46.
Of course, the tube nest 22 is fixed, at -the heat exchanger opposite ends, by means of tube plates adapted for connection of tubes 22 with the end manifolds and for sealing the volume R.
Said duct 42 has an elbow 48 and is then sealingly fixed to a diverging chamber S, having a downstream cylindric portion S' wherein a hea-ter or -the condenser of a refrigera-t-ing machine is housed. The air current, pre-heated within said hea-t exchanger M, flows through said heater T and, in case, to fur-ther heating means 54, which can be placed down-stream -the heater T when -this latter is considered not suf-ficien-t to reach the required temperature.
The chamber por-tion S', through an elbow 56, is -then connected with a ver-tical duct 58 wherein -the warm air cur-rent flows according -to arrows 60 un-til joining the inlet 62 of chamber C.
The heat exchanger could be of a type different than the one shown, for instance, wi-th plane surfaces or fins.
The advantages and opera-tion of the drycleaning machine according to the invention can now be summarized.
After the washing step of clothes 10 wi-thin drum D by means of a solven-t, a cloth ventilation and drying s-tep is carried-out, toge-ther with a solvent recovery, both in open plants or in closed circui-t plan-ts, as that shown in the drawing.
The whole close circui-t is shown by the arrows in the drawing. From outlet h2 of -the warm air duct 58, -the warm air curren-t follows arrows 6~ through the clothes 10, with ventilation ~f chamber C and drying of clothes. Said air current is then fed (arrows 66) to chamber F wherein said filter 12 retains downs and impurities from clothes 10. The warm air current is -then sucked, -through fitting 14, by blower-aspirator G and fed, according to arrows 68, to -the heat-exchanger M.
The air curren-t at high tempera-ture flows wi-thin tubes 22 of heat-exchanger M and heats said tubes, while possible solven-t condensate particles formed within tubes 22 are discharged in-to chamber Q and -then to the solven-t recovery through plug 28. The air current flows according to arrows y-y from tubes 22 and crosses -the cooler P along arrows 70, to be cooled until attaining a whole solvent condensation, with solvent recovery a-t plug 28. The cool air must be -then newly warmed to perform its drying operation and then it follows arrows 72 along duc-t 32 to be fed to said heat-exchanger M, namely to volume R thereof. The cool air con-tac-ts the hot outer surfaces of tubes 22 and is then pre-heated, with heat recovery. Preferably the air may follow a tortuous path as shown by arrows 40, in coun-tercurrent to the flow within tubes 22. However, different -types of hea-t exchangers may be foreseen, for instance, of the equicurrent or crossed-current type.
The pre-heated air from heat-exchanger M is -then ~ed to duc-t ~2, according to arrows 46, and -to chamber S
(arrows 52) -to reach the heater T, wherein the necessary air temperature for drying clothes lO within drum D is obtained.
If necessary, further heating resistors 54 can be placed down-stream said hea-ter T, when this la-tter is not in condition to fully join the required -targets. The warm air follows arrows 56-60 along duct 58 until reaching the lower opening 62 thereof and chamber C, wherein clothes lO are dried by current 64.
It is to be unders-tood that the heat recovery in said heat-exchanger allows to obtain a reduction of -the energy consumption of 30-50% in comparison wi-th known machines.
This invention relates to a drycleaning ~achine ~or clothes or the like.
It is well known that, in drycleaning machines, aEter a washing phase by means of a solvent, a cloth venti-lation and dryin~ phase takes place. This ventila-tion and drying phase is carried out by ~orcing, through -the machine drum, an air curren-t which is warmed-up by high temperature heating means. Said air enters the drum in a purified condi-tion and leaves said drum with -the solven-t picked-up from clothes. Outside -the drum, the air current is cooled to condense the solvent. The same ai.r current (in case o~
closed circuit) or a fresh one (in case of open circui-t) is then passed through heating means that bring the same to a suitably high temperature. This operation of -the solvent cir-cuit involves a high energy consump-tion, in particular due to heating means which are usually electrically operated.
The present invention provides a drycleaning machine wherein such an energy consumption is reduced.
Accordingly, this invention provides a drycleaning machine, having an open orClosed solvent circuit, wherein at leas-t one heat exchanger is placed in the ventila-tion and drying circuit, in heat exchange conditions respectively wi-th the warm air current flowing downstream the machine drum and up-stream the solvent condenser, and wi-th the cool air current flowing upstream the air hea-ting means. Preferably, the heat exchanger is of the continuous type, with warm air inner paths, for instance in the form of tubes, and with cool air inner paths, for instance obtained in the heat exchanger inner volume outside said tubes. Said heat exchanger is suitably slanted -toward the horizontal, so to allow draining of condensed solvent from the tubes thereof.
The single Figure of the accompanying drawing is a ,~
diagram~atic cross-section of a drycleaning machine according to the invention.
With reference to -the drawingt -the drycleaning machine or plant Eor clo-thes or -the like according -to the in-vention is diagrammatically shown only in its means as neces-sary for the understanding of -the invention. Said machine has a base A carrying a frame B which comprises a chamber C where-in a riddled washing drum D is housed. Said drum can rotate around a horizontal axis X-X and houses -the clothes or the like lG to be cleaned. Said chamber C communica-tes wi-th a fur-ther chamber F which is supported by the machine frame and houses a filter 12 for the air flow, circulating along a ventilation and drying circui-t as depicted by -the arrows.
Said filter may be of any suitable type and re-tains any down or impurity drawn-up from the clothes 10 during -the ven-tila-tion and drying step. A s-tanding-up duc-t 14 communica-tes said chamber F with a blower-aspirator G of the vertical axis type, having a fan operated by a motor H.
The air current as delivered by element G is fed to a divergent collector-fitting 18 which is sealingly fixed to a first end 20 of a housing L containing a heat exchanger M
of -the parallel tube type.
The opposite end 24 of such housing L is sealingly fixed to a divergent collector duct N wherein a cooling means P, in particular an evaporator of a refrigerating machine, is housed. Said duct N has a plug 28 at the end of i-ts slanting lower wall, to discharge the solvent as drawn by -the warm air flowing -through the tubes 22 of heat exchanger M (arrows Y) and condensed within the cooler P.
The heat exchanger M has free spaces 30 between its parallel tubes 22 t is placed downstream the blower G and upstream the cooler P and is downwardly slanting from i-ts end 20 to its end 24.
Downstream the cooler P, a diverging chamher Q is connec-ted, by means of a duct 32, wi-th a volume R which is defined within the hea-t exchanger M, by -the free spaces 30 between the hea-t exchanger -tubes 22, said duct 32 comprising an ou-tlet 34 from chamber Q and an inlet 36 -to the volume R.
Reference 38 shows baffle means to define a -tor-tuous path for -the air current, as depic-ted by arrows 40 within the hea-t exchanger M.
A duct 42 is connec-ted to an outle-t end of volume R, in order to convey the air flow according to arrows 44 and 46.
Of course, the tube nest 22 is fixed, at -the heat exchanger opposite ends, by means of tube plates adapted for connection of tubes 22 with the end manifolds and for sealing the volume R.
Said duct 42 has an elbow 48 and is then sealingly fixed to a diverging chamber S, having a downstream cylindric portion S' wherein a hea-ter or -the condenser of a refrigera-t-ing machine is housed. The air current, pre-heated within said hea-t exchanger M, flows through said heater T and, in case, to fur-ther heating means 54, which can be placed down-stream -the heater T when -this latter is considered not suf-ficien-t to reach the required temperature.
The chamber por-tion S', through an elbow 56, is -then connected with a ver-tical duct 58 wherein -the warm air cur-rent flows according -to arrows 60 un-til joining the inlet 62 of chamber C.
The heat exchanger could be of a type different than the one shown, for instance, wi-th plane surfaces or fins.
The advantages and opera-tion of the drycleaning machine according to the invention can now be summarized.
After the washing step of clothes 10 wi-thin drum D by means of a solven-t, a cloth ventilation and drying s-tep is carried-out, toge-ther with a solvent recovery, both in open plants or in closed circui-t plan-ts, as that shown in the drawing.
The whole close circui-t is shown by the arrows in the drawing. From outlet h2 of -the warm air duct 58, -the warm air curren-t follows arrows 6~ through the clothes 10, with ventilation ~f chamber C and drying of clothes. Said air current is then fed (arrows 66) to chamber F wherein said filter 12 retains downs and impurities from clothes 10. The warm air current is -then sucked, -through fitting 14, by blower-aspirator G and fed, according to arrows 68, to -the heat-exchanger M.
The air curren-t at high tempera-ture flows wi-thin tubes 22 of heat-exchanger M and heats said tubes, while possible solven-t condensate particles formed within tubes 22 are discharged in-to chamber Q and -then to the solven-t recovery through plug 28. The air current flows according to arrows y-y from tubes 22 and crosses -the cooler P along arrows 70, to be cooled until attaining a whole solvent condensation, with solvent recovery a-t plug 28. The cool air must be -then newly warmed to perform its drying operation and then it follows arrows 72 along duc-t 32 to be fed to said heat-exchanger M, namely to volume R thereof. The cool air con-tac-ts the hot outer surfaces of tubes 22 and is then pre-heated, with heat recovery. Preferably the air may follow a tortuous path as shown by arrows 40, in coun-tercurrent to the flow within tubes 22. However, different -types of hea-t exchangers may be foreseen, for instance, of the equicurrent or crossed-current type.
The pre-heated air from heat-exchanger M is -then ~ed to duc-t ~2, according to arrows 46, and -to chamber S
(arrows 52) -to reach the heater T, wherein the necessary air temperature for drying clothes lO within drum D is obtained.
If necessary, further heating resistors 54 can be placed down-stream said hea-ter T, when this la-tter is not in condition to fully join the required -targets. The warm air follows arrows 56-60 along duct 58 until reaching the lower opening 62 thereof and chamber C, wherein clothes lO are dried by current 64.
It is to be unders-tood that the heat recovery in said heat-exchanger allows to obtain a reduction of -the energy consumption of 30-50% in comparison wi-th known machines.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A drycleaning machine, of the type having a chamber housing a rotatable drum for clothes, and an open or closed ventilation and drying circuit comprising means for heating an air current, means for feeding said heated air current into said drum, means for drawing said air current with solvent vapours from said drum, and at least a solvent condenser for cooling said air current below the solvent boiling point, wherein at least one heat exchanger is disposed in said ventilation and drying circuit in heat exchange con-ditions with at least a warm air current downstream said machine drum and upstream said solvent condenser, and res-pectively with at least a cool air current upstream said air current heating means.
A drycleaning machine according to claim 1, wherein said ventilation and drying circuit is a closed cir-cuit with fan means downstream said drum, for circulating said air current, wherein said heat exchanger has at least a warm air cooling path downstream said fan and upstream said solvent condenser, and at least a cool air warming path down-stream said solvent condenser.
3. A drycleaning machine according to claim 1, wherein said heat exchanger comprises a series of tubes where-in the warm air is conveyed, while a cool air path is provided for outside said tubes.
4. A drycleaning machine according to claim 3, wherein said heat exchanger is slanted in such a manner to convey the liquid solvent condensed within the tubes thereof to a zone downward the same.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2362681U IT8123626V0 (en) | 1981-11-26 | 1981-11-26 | DRY CLEANING SYSTEM WITH HEAT RECOVERY IN THE VENTILATION AND DRYING CIRCUIT. |
| IT23626-B/81 | 1981-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1192412A true CA1192412A (en) | 1985-08-27 |
Family
ID=11208689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000415769A Expired CA1192412A (en) | 1981-11-26 | 1982-11-17 | Drycleaning machine |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5897398A (en) |
| AU (1) | AU9020482A (en) |
| CA (1) | CA1192412A (en) |
| CH (1) | CH649111A5 (en) |
| DE (1) | DE8219301U1 (en) |
| FR (1) | FR2516953A3 (en) |
| GB (1) | GB2110251B (en) |
| IT (1) | IT8123626V0 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130691U (en) * | 1983-02-22 | 1984-09-01 | 三菱重工業株式会社 | dry cleaner |
| JPS63177899A (en) * | 1987-01-16 | 1988-07-22 | 宮田 幸男 | Method and apparatus for drying washed article |
| JPS63240900A (en) * | 1987-03-27 | 1988-10-06 | 宮田 幸男 | Sol recovery apparatus of washing article |
| DE4015846A1 (en) * | 1990-05-17 | 1991-11-21 | R & W Finish Remmele & Wesseli | Garment cleaning assembly - has sealed links between stages with filter unit connected to exhaust with vapour condenser and active carbon filter |
| FR2677270B1 (en) * | 1991-06-10 | 1993-12-17 | Auguste Begarie | DUST FILTER AND DRY CLEANING MACHINE EQUIPPED WITH SUCH A FILTER. |
| JPH055094U (en) * | 1991-07-04 | 1993-01-26 | 株式会社山本製作所 | Recovery dryer |
| DE19635075A1 (en) * | 1996-08-30 | 1998-03-05 | Maul & Co Chr Belser Gmbh | Process and device for cleaning and reusing exhaust air |
| DE102005013051A1 (en) * | 2005-03-18 | 2006-09-21 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation Dryer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844097A (en) * | 1981-09-11 | 1983-03-14 | 三菱重工業株式会社 | Dry cleaning apparatus |
-
1981
- 1981-11-26 IT IT2362681U patent/IT8123626V0/en unknown
-
1982
- 1982-06-23 CH CH386282A patent/CH649111A5/en not_active IP Right Cessation
- 1982-07-06 DE DE19828219301 patent/DE8219301U1/en not_active Expired
- 1982-07-08 GB GB08219787A patent/GB2110251B/en not_active Expired
- 1982-07-08 FR FR8211990A patent/FR2516953A3/en active Granted
- 1982-11-05 AU AU90204/82A patent/AU9020482A/en not_active Abandoned
- 1982-11-17 CA CA000415769A patent/CA1192412A/en not_active Expired
- 1982-11-22 JP JP20382482A patent/JPS5897398A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CH649111A5 (en) | 1985-04-30 |
| DE8219301U1 (en) | 1982-12-16 |
| GB2110251A (en) | 1983-06-15 |
| FR2516953A3 (en) | 1983-05-27 |
| GB2110251B (en) | 1985-01-09 |
| FR2516953B3 (en) | 1983-10-21 |
| JPS5897398A (en) | 1983-06-09 |
| AU9020482A (en) | 1983-06-02 |
| IT8123626V0 (en) | 1981-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |