US3556201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heating and cooling presses and the like
Assignee: KONUS KESSEL GES fur WARMETECH
•
Filing: 1969-03-25
•
Granted: 1971-01-19
•
Expires: 1989-03-25
Abstract
Abstract A press or the like, to be heated and cooled alternately, is connected with a circulatory system for supplying either heating or cooling fluid to the press. Heating fluid leaving the press, during a certain period of the heating of the press, is used for subsequent cooling of the press, while cooling fluid leaving the press, during a certain period of cooling of the press, is subsequently used for heating the press. The heating and cooling fluid preferably is a liquid, such as an oil.
Inventors
- 👤 Wolfgang Sander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:00
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0662; B29C; B29C35/00; B29C35/007; B30; B30B; B30B15/00; B30B15/34; B29C35/02; B29C35/16; B29D2030/0675
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
231 words
In a method for alternate heating and cooling of a workpiece In a press means or the like in cyclically sequentially successive and alternating heating and cooling periods, and in which, during heating periods, heat transfer liquid warmer than the workpiece and, during cooling periods, heat transfer liquid colder than the workpiece, are circulated through the press means, with the heating liquid and the cooling liquid flowing, respectively, through heating means and cooling means externally of the press means: the improvement comprising the steps of, in at least one period of each cycle including a heating period and a cooling period, at least partly abstracting liquid emerging from the press means during a part of one period for return of the abstracted liquid to the press means during at least one later period of operation; bypassing the abstracted liquid relative to the heating and cooling means; initiating return of the abstracted liquid to the press means at a time when the difference between the instantaneous temperature of the workpiece and the final desired temperature of the workpiece at the end of the particular period is greater, in the same direction, than the difference between the instantaneous temperature of the abstracted liquid and such final desired temperature; and interrupting flow of the abstracted liquid when the temperature of the workpiece is not more substantially different from the temperature of the abstracted liquid.
Claim 2
Dependent Claim
231 words
In a method for alternate heating and cooling of a workpiece In a press means or the like in cyclically sequentially successive and alternating heating and cooling periods, and in which, during heating periods, heat transfer liquid warmer than the workpiece and, during cooling periods, heat transfer liquid colder than the workpiece, are circulated through the press means, with the heating liquid and the cooling liquid flowing, respectively, through heating means and cooling means externally of the press means: the improvement comprising the steps of, in at least one period of each cycle including a heating period and a cooling period, at least partly abstracting liquid emerging from the press means during a part of one period for return of the abstracted liquid to the press means during at least one later period of operation; bypassing the abstracted liquid relative to the heating and cooling means; initiating return of the abstracted liquid to the press means at a time when the difference between the instantaneous temperature of the workpiece and the final desired temperature of the workpiece at the end of the particular period is greater, in the same direction, than the difference between the instantaneous temperature of the abstracted liquid and such final desired temperature; and interrupting flow of the abstracted liquid when the temperature of the workpiece is not more substantially different from the temperature of the abstracted liquid.
Claim 3
Dependent Claim
46 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 1, including storing the abstracted liquid in different storage means into each of which liquid is abstracted at about the same final temperature.
Claim 4
Dependent Claim
107 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 2, including the steps of dividing each heating period and each cooling period into respective first and second stages; supplying heat transfer liquid to the press means from the heating means in the second stage of each heating period; supplying heat transfer liquid to the press means from the cooling means in the second stage of each cooling period; and supplying such abstracted liquid to the press in the first stage of each heating period and in the first stage of each cooling period.
Claim 5
Dependent Claim
77 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 3, in which, during the first stage of each cooling period, liquid abstracted from the first stage of a preceding heating period is supplied to the press means and, in the first stage of each heating period, liquid abstracted in the first stage of a preceding cooling period is supplied to the press means.
Claim 6
Dependent Claim
77 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 3, in which in the first stage of each cooling period, liquid abstracted in the second stage of a preceding cooling period is supplied to the press means and, in the first stage of each heating period, liquid abstracted in the second stage of a preceding heating period is supplied to the press means.
Claim 7
Dependent Claim
217 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 3, including the steps of, in a first stage of a heating period supplying liquid to the press means from a warm storage means; in a first part of such first stage returning liquid from the press means to a tepid storage means; and a second part of such first stage returning liquid from the press means to the warm storage means; in a second stage of the heating period supplying liquid to the press means from the hot storage means; at least during the latter part of such second stage, returning liquid from the press means to the hot storage means; in a first stage of the succeeding cooling period supplying liquid to the press means from the tepid storage means; in a first part of the first stage of the cooling period, returning liquid from the press means to the warm storage means; in the second part of this first stage of the cooling period, returning liquid from the press means to the tepid storage means; and, in a second stage of the cooling period, supplying liquid from a cold liquid storage means and returning the liquid to the tepid storage means.
Claim 8
Dependent Claim
51 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 6, in which, in the first part of the second stage of the heating period, liquid supplied to the press means is returned to the warm storage means.
Claim 9
Dependent Claim
47 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 6, including the step of continuously circulating liquid from the tepid storage means through the cooling means and into the cold liquid storage means.
Claim 10
Dependent Claim
53 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 6, including the step of continuously circulating liquid from one of the warm storage means and the hot storage means through the heating means and into the hot storage means.
Claim 11
Dependent Claim
47 words
In a method for alternate heating and cooling of a workpiece in a press means or the like, the improvement claimed in claim 1, including the step of continuously circulating liquid from the hot storage means through the heating means and back to the hot storage means.
Claim 12
Dependent Claim
204 words
Apparatus for supplying heat to, and removing heat from, a press means or the like, comprising, in combination, a pump; a cool liquid circuit including said pump, a cooling means and liquid storage means; a hot liquid circuit including said pump, a heating means and liquid storage means; means selectively connecting said circuits with the press means or the like to provide for heating of the liquid during cooling of the press means or the like and cooling of the liquid during heating of the thermal load; said liquid storage means including hot, warm, tepid and cold liquid storage means in said circuits, and each having a discharge duct; means connecting the discharge ducts of said four storage means with the press means or the like; means connecting the press means or the like with at least the hot, warm and tepid storage means for transfer of liquid from the press means or the like to these three storage means; a pump connected in a circuit including said cooling means, said tepid storage means, and said cold storage means; and a pump connecting said heating means and said hot storage means for circulation of liquid between said heating means and said hot storage means.
Claim 13
Dependent Claim
204 words
Apparatus for supplying heat to, and removing heat from, a press means or the like, comprising, in combination, a pump; a cool liquid circuit including said pump, a cooling means and liquid storage means; a hot liquid circuit including said pump, a heating means and liquid storage means; means selectively connecting said circuits with the press means or the like to provide for heating of the liquid during cooling of the press means or the like and cooling of the liquid during heating of the thermal load; said liquid storage means including hot, warm, tepid and cold liquid storage means in said circuits, and each having a discharge duct; means connecting the discharge ducts of said four storage means with the press means or the like; means connecting the press means or the like with at least the hot, warm and tepid storage means for transfer of liquid from the press means or the like to these three storage means; a pump connected in a circuit including said cooling means, said tepid storage means, and said cold storage means; and a pump connecting said heating means and said hot storage means for circulation of liquid between said heating means and said hot storage means.
Claim 14
Dependent Claim
34 words
Apparatus, as claimed in claim 11, including a pump connecting the discharge duct of said warm storage means with said heating means to supply liquid from said warm storage means to said heating means.
Claim 15
Dependent Claim
29 words
Apparatus, as claimed in claim 11, comprising connections between the discharge ducts of said warm, tepid and cold storage means; and valve means operable to selectively close said connections.
Claim 16
Dependent Claim
32 words
Apparatus, as claimed in claim 11, comprising duct means providing a short circuit path leading from and to said hot storage means; and selectively operable means for blocking said short circuit path.
Claim 17
Dependent Claim
41 words
Apparatus, as claimed in claim 11, comprising means connecting said warm storage means with a space heating installation for supply of liquid to the space heating installation; and return duct means connecting the space heating installation to said tepid storage means.
Claim 18
Dependent Claim
31 words
Apparatus, as claimed in claim 15, comprising means connecting said tepid storage means with the space heating installation for supplying liquid from said tepid storage means to the space heating installation.
Claim 19
Dependent Claim
59 words
Apparatus, as claimed in claim 15, comprising an additional heating device; a branch duct connected to said hot storage means to supply liquid from said hot storage means to said additional heating device; and means connecting said additional heating device to the Space heating installation for supply of liquid from said additional heating device to the space heating installation.
References Cited (Backward Citations)
US3259175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |