US3768552A - Device for heating and cooling various products - Google Patents

Device for heating and cooling various products Download PDF

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Publication number
US3768552A
US3768552A US00075446A US3768552DA US3768552A US 3768552 A US3768552 A US 3768552A US 00075446 A US00075446 A US 00075446A US 3768552D A US3768552D A US 3768552DA US 3768552 A US3768552 A US 3768552A
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United States
Prior art keywords
tank
particles
set forth
pulverulent
outlet
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Expired - Lifetime
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US00075446A
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English (en)
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P Ciraud
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C33/046—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/007—Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/46—Heating or cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/02—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using granular particles

Definitions

  • ABSTRACT The device comprises two containers respectively superposed and communicating through a valve Each container is fitted with heat exchange elements and contains a load of pulverulent material maintained in fluid state. Gaseous transfer means are provided to move a part of the load to a treatment area and therefrom to the inlet of the first container.
  • the invention becomes possible to combine the simple heating by a burner with the efficiency of oil heating and cooling, and to eliminate the disadvantages caused by the above mentioned process.
  • the device comprises at least one stove with heat exchanger components, said stove containing a load of regularly calibrated pulverulent material and being provided, on the inside, with means to maintain said load in fluid state, suction transfer means being furtherprovided to move at least a part of the load of material in fluid state towards a cavity of a treatment area and from this cavity, up the stove inlet.
  • FIG. 1 is a diagrammatic sectional view of an embodiment of the device of the invention.
  • FIG. 2 is a diagrammatic sectional view similar to FIG. 1 showing a development of the invention.
  • FIG. 3 is a diagrammatic perspective view of a rotary moulding device embodying the invention.
  • FIG. 1 In the embodiment of FIG. 1 is shown a mould l which has two walls 2 and 3, separated from each other.
  • the mould l is closed'by a cover 4 and is provided to mould a part made of thermoplastic resin, the
  • the mould 1 is equipped with one or two filling and draining flanges 9, 9a which allow access to cavity 10 delimited by walls 2 and 3.
  • a stove 11 as been provided, said stove, including, preferentially and as shown, two containers l2 and 13 connected to each other by a neck 14 with a valve 15 provided therein.
  • Container 12 is at least partially filled with glass balls 16 carefully calibrated the diameter of said glass balls can vary from some microns up to about half a millimeter.
  • glass balls are preferably used, other materials in pulverulent form can be used, subject to the conditions that these products present a regular granulometry and that they be not or little abrasive that they, cannot agglomerate and further that they present'a thermic inertia as important as possible.
  • the second container 13 is similar to container 12 and is also fitted on the lower part thereof with a valve 17.
  • container 13 is provided with means designed to fluidify the glass balls contained therein, said means can be a simple screw 18 or other stirrer component but preferably they are composed of an air diffuser 19 set out on the lower part of the container, and the air is delivered under slight pressure through a conduit 20 connected to the outlet of compressor 21.
  • a tap or valve 22 is provided for controlling the quantity of air brought into thecontainer 13 and a conduit 23 is also provided on the upper part of container 13 for exhausting the air in order to maintain the inside of container 13 substantially close to the air pressure.
  • the diffuser l9 many realizations are possible and, for instance, it is advantageous to provide all or a portion of the upper part of the container 13 bottom, with plates, discs or rings of porous material, particularly of bronze or fritted glass so that the air or other gas brought into saidcontainer 13 is uniformly distributed and maintain the mass of glass balls 16a that it may contain through opening of the valve 15 in a state similar to a fluid state, i.e. a fluidized state.
  • the containers l2 and 13 contain heating electric resistances 24 and 25 of which the feeding is controlled by thermosensitive probes 26, 26a, respectively.
  • the glass balls 16 are heated, said glass balls being pre-heated in container 12, a part of the glass balls is then transferred through the valve 15 into container 13 in which they are brought to the desired temperature, this temperature being controlled via the thermosensitive probe 26a, and being strictly the same for the balls since they are maintained stirred in the same way as molecules of a fluid.
  • mould 1 is placed under container 13 and the load of balls in fluid state that is contained therein is transferred into cavity 10 of the mould through the valve 17 and flange 9 of said mould.
  • the device of FIG. 1 also possible the extraction and the recuperation of the glass balls from cavity of the mould.
  • a conduit 27 fitted with a valve 28 is connected to an appliance 29 for separating balls and air, this appliance being, for example, made in the way of a cyclone.
  • the compressor 21 is equipped to blow air, for example by means of a nozzle 30, into the conduit 28 and towards the cyclone 29.
  • the nozzle 30 may be joined up to a Venturi 31.
  • conduit 27 which causes suction of the balls contained in the cavity 10 when either the flange 9, or as shown, the flange 9a is brought opposite the tube 27.
  • the filling and draining cycle of cavity 10 can be accelerated, making it possible to load and unload said cavity 10 several times if it is desired that the temperature be progressively increased in mould I, for instance to prevent a heat shock.
  • FIG. 1 It is obvious for anyone skilled in the art that the device of FIG. 1 can be utilized, in the same way for cooling. In that case it is only necessary to substitute cooling components to heating components composed of electric resistances 24, 25 for instance a coil run by a cold liquid or an evaporator from a refrigerating installation. It would not be beyond the scope of the invention to equip the stove 11 with both heating and cooling means, operating alternately.
  • FIG. 2 shows a development of the invention enabling to ensure indifferently the heating then the cooling in a progressive continuous cycle, of various products or materials, exactly in the same way as if a liquid were utilized, for example oil.
  • the device includes an heating stove 11, with two containers 12 13 similar to those of FIG. 1 and a cooling stove 11 including two cooling containers 12 and 13
  • the containers 12., 12 respectively are used for the storage of glass balls 16, and containers 13,, 13 respectively, for the storage of glass balls 16a maintained in a fluid state, for example by air or other gas diffuser 19.
  • FIG. 2 To eat and then to cool the glass balls respectively, it has been shown in FIG. 2 heat exchanger conduits 32 for the stove 1],, and respectively 33 for the stove 11 with a fluid running through these exchanger conduits, for example hot gas for the conduits 32 and a coldproducing fluid for the exchanger conduits 33.
  • the two containers 13 and 13 are connected to each other by means of a pipe 34 which is itself connected by a threeway valve 35 to a conduit 36 leading to the cavity 10 of mould l.
  • the cavity 10 furthermore is connected to a conduit 37 and a second three-way valve 38 at the inlet of conduit 27 and 27 through which the glass balls are respectively returned to the containers 12 and 12, through cyclone appliances 29 and 29 in relation with air compressors.
  • valves 35 and 38 are simply operated so that the balls 16a from container 13 are put into circulation in cavity 10.
  • the components for supporting mould l are composed of tubular shafts 40 inside of which the balls are put into circulation exactly as described with reference to FIG. 2, the conducts 36 and 37 of said figure leading, for example to shaft portions 40a and 40b respectively.
  • Apparatus for heating and cooling various products comprising:
  • At least one tank having an inlet and an outlet, said tank being connected at the outlet thereof with said inlet duct;
  • suction means connected to said outlet duct and to the inlet of said tank for moving the heated and in non-cohesive state particles from said tank when said first valve is opened through said closed area and from said closed area to said tank;
  • said disturbing means comprises a pneumatic gas diffuser placed on the bottom wall of at least one tank, said tank being then further provided with a separation appliance having a gas discharge outlet whereby separation of waste gas from said pulverulent material takes place and is eliminated from said tank.
  • suction means are composed of a gas injection nozzle placed in a venturi upstream from said separation appliance.
  • Apparatus for heating and cooling various products comprising:
  • a first tank having one input port and one output port and inside of which is provided a charge of pulverulent particles
  • a second tank having one input port and one output port and inside of which are provided together means to connect the output port of said first tank to the input port of said second tank, and to controllably permit part of said charge of pulverulent particles to pass into said second tank, heat exchange means for varying the temperature of the said particles in said second tank, and
  • disturbing means for the part of said charge of pulverulent particles within said second tank, said disturbing means being designed to maintain the pulverulent particles therein in a non-cohesive state
  • suction means for moving the heated pulverulent particles from the output port of said second tank towards the at least one inlet aperture of said closed area, then from said inlet to the at least one outlet aperture of said closed area and from this outlet to the input port of said first tank.
  • pulverulent particles are composed of fine-grained heat and cold conserving material having a diameter ranging from a few microns to 0.5 millimeter.
  • said disturbing means comprises a pneumatic gas diffuser placed on the bottom wall of said second tank, said second tank being then further provided with a separation appliance having a gas discharge outlet whereby separation of waste gas from said pulverulent material takes place and is eliminated from said second tank.
  • suction means are composed of gas injection nozzle placed in a venturi upstream from said separation appliance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Moulding By Coating Moulds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US00075446A 1969-09-12 1970-09-25 Device for heating and cooling various products Expired - Lifetime US3768552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6931229A FR2058530A5 (enrdf_load_stackoverflow) 1969-09-12 1969-09-12

Publications (1)

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US3768552A true US3768552A (en) 1973-10-30

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US00075446A Expired - Lifetime US3768552A (en) 1969-09-12 1970-09-25 Device for heating and cooling various products

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US (1) US3768552A (enrdf_load_stackoverflow)
DE (1) DE2047411C3 (enrdf_load_stackoverflow)
FR (1) FR2058530A5 (enrdf_load_stackoverflow)
GB (1) GB1322054A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837769A (en) * 1972-07-29 1974-09-24 H Erlenbach Apparatus for the manufacture of molded articles of foam-forming thermoplastic synthetics
US3859734A (en) * 1973-01-18 1975-01-14 Sintab Swedinventor Ab Methods and plants for drying material in liquid solid, suspended or granulated form, e.g. blood-plasma, digested sludge, forage, fish, cereals, etc.
US5542022A (en) * 1993-07-01 1996-07-30 Coal Tech Corp. Compact packed bed heater system
US6056981A (en) * 1994-02-28 2000-05-02 Biozyme Systems Inc. Euphausiid harvesting and processing method and apparatus
US6095803A (en) * 1999-06-04 2000-08-01 Slater; G. Barry Thermoplastic adhesive materials conveying system
US6112699A (en) * 1994-02-28 2000-09-05 Biozyme Systems, Inc. Euphausiid harvesting and processing method and apparatus
US6358042B1 (en) * 1999-10-19 2002-03-19 Kei Moriguchi Heating furnace
US6555155B2 (en) 1996-10-21 2003-04-29 Biozyme Systems, Inc. Method and apparatus for harvesting, digestion and dehydrating of krill hydrolysates and co-drying and processing of such hydrolysates

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9027184D0 (en) * 1990-12-14 1991-02-06 Ettinger George M Heat transport apparatus
DE4204171A1 (de) * 1992-02-13 1993-08-19 Ymos Ag Ind Produkte Verfahren und vorrichtung zum erwaermen einer form
DE19633121C1 (de) * 1996-08-16 1997-05-15 Ymos Ag Ind Produkte Verfahren zum Erwärmen eines Formwerkzeuges

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA578432A (en) * 1959-06-23 R. Fenske Merrell Process for heat removal by dispersed solids
US3178923A (en) * 1961-09-01 1965-04-20 Ass Elect Ind Roll heating means
US3215505A (en) * 1959-09-10 1965-11-02 Metallgesellschaft Ag Apparatus for the continuous cracking of hydrocarbons
US3227207A (en) * 1963-03-04 1966-01-04 Alan L Litman Thermal environmental control apparatus
US3388429A (en) * 1963-11-27 1968-06-18 Vistron Corp Thermodynamic casting machine
US3411465A (en) * 1966-02-23 1968-11-19 Shirai Takashi Method for incinerating moist materials and an apparatus therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA578432A (en) * 1959-06-23 R. Fenske Merrell Process for heat removal by dispersed solids
US3215505A (en) * 1959-09-10 1965-11-02 Metallgesellschaft Ag Apparatus for the continuous cracking of hydrocarbons
US3178923A (en) * 1961-09-01 1965-04-20 Ass Elect Ind Roll heating means
US3227207A (en) * 1963-03-04 1966-01-04 Alan L Litman Thermal environmental control apparatus
US3388429A (en) * 1963-11-27 1968-06-18 Vistron Corp Thermodynamic casting machine
US3411465A (en) * 1966-02-23 1968-11-19 Shirai Takashi Method for incinerating moist materials and an apparatus therefor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837769A (en) * 1972-07-29 1974-09-24 H Erlenbach Apparatus for the manufacture of molded articles of foam-forming thermoplastic synthetics
US3859734A (en) * 1973-01-18 1975-01-14 Sintab Swedinventor Ab Methods and plants for drying material in liquid solid, suspended or granulated form, e.g. blood-plasma, digested sludge, forage, fish, cereals, etc.
US5542022A (en) * 1993-07-01 1996-07-30 Coal Tech Corp. Compact packed bed heater system
US6056981A (en) * 1994-02-28 2000-05-02 Biozyme Systems Inc. Euphausiid harvesting and processing method and apparatus
US6112699A (en) * 1994-02-28 2000-09-05 Biozyme Systems, Inc. Euphausiid harvesting and processing method and apparatus
US6555155B2 (en) 1996-10-21 2003-04-29 Biozyme Systems, Inc. Method and apparatus for harvesting, digestion and dehydrating of krill hydrolysates and co-drying and processing of such hydrolysates
US6095803A (en) * 1999-06-04 2000-08-01 Slater; G. Barry Thermoplastic adhesive materials conveying system
US6358042B1 (en) * 1999-10-19 2002-03-19 Kei Moriguchi Heating furnace

Also Published As

Publication number Publication date
FR2058530A5 (enrdf_load_stackoverflow) 1971-05-28
DE2047411A1 (de) 1972-03-30
DE2047411C3 (de) 1980-06-26
DE2047411B2 (de) 1979-10-04
GB1322054A (en) 1973-07-04

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