CA1070258A - Cooling or freezing plant comprising a housing with conveyor means for moving horizontally arranged carriers in vertical direction - Google Patents
Cooling or freezing plant comprising a housing with conveyor means for moving horizontally arranged carriers in vertical directionInfo
- Publication number
- CA1070258A CA1070258A CA270,833A CA270833A CA1070258A CA 1070258 A CA1070258 A CA 1070258A CA 270833 A CA270833 A CA 270833A CA 1070258 A CA1070258 A CA 1070258A
- Authority
- CA
- Canada
- Prior art keywords
- carriers
- housing
- carrier
- conveyor
- path
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
- F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
- F25D13/067—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space with circulation of gaseous cooling fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Intermediate Stations On Conveyors (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Abstract of the Disclosure.
A cooling or freezing plant, comprising a housing wherein conveyor means are arranged having supports for moving horizontally arranged carriers for the material to be cooled or frozen in the vertical direction one above the other from an inlet opening to an exit opening, and wherein means for circulating cold air through the housing are provided, wherein the conveyor means in the housing comprise two conveyor devices, viz. one for upward and one for downward movement of the carriers and a transfer device arranged between the two conveyor devices and wherein a path of transportation extending from the exit opening to the inlet opening of the housing, a conveyor positioned along the path for moving the carriers in such a way along the path that the front ends of the carriers follow immediately behind the trailing ends of the preceding carriers so as to form an almost unbroken carpet, the conveyor, moreover, being adapted so as to be engaged with the carriers at the exit opening of the housing and to be disengaged from the carriers after the positioning of the carriers on the supports of one of the two conveyor de-vices in the housing, a station for positioning the material to be cooled or frozen, arranged at the path of transportation before the inlet opening and a station for removing the cooled or frozen material arranged at the path of transportation after the exit opening, the two stations being arranged at approximately the same level.
A cooling or freezing plant, comprising a housing wherein conveyor means are arranged having supports for moving horizontally arranged carriers for the material to be cooled or frozen in the vertical direction one above the other from an inlet opening to an exit opening, and wherein means for circulating cold air through the housing are provided, wherein the conveyor means in the housing comprise two conveyor devices, viz. one for upward and one for downward movement of the carriers and a transfer device arranged between the two conveyor devices and wherein a path of transportation extending from the exit opening to the inlet opening of the housing, a conveyor positioned along the path for moving the carriers in such a way along the path that the front ends of the carriers follow immediately behind the trailing ends of the preceding carriers so as to form an almost unbroken carpet, the conveyor, moreover, being adapted so as to be engaged with the carriers at the exit opening of the housing and to be disengaged from the carriers after the positioning of the carriers on the supports of one of the two conveyor de-vices in the housing, a station for positioning the material to be cooled or frozen, arranged at the path of transportation before the inlet opening and a station for removing the cooled or frozen material arranged at the path of transportation after the exit opening, the two stations being arranged at approximately the same level.
Description
~0~,~0~2 The present invention relates to a cooling or freezing plant com-prising a housing wherein conveyor means are arranged having supports for moving horizontally arranged carriers for the material to be cooled or fro~en in the vertical direction one above the other from an inlet opening ~o an exit opening and wherein mcans for circul~ting cold air through the housing are provided.
An apparatus of this kind is previously known from United States patent specification No. 2,527,542. According to this United S~ates specifi cation the conveyor means in the housing constitute an elevator for upward movement of the carriers. The carriers are inserted manually into the housing at the bottom end thereof and the carriers are removed from the housing at the top end thereof. In order to achieve a high output it is necessary to construct the housing very high and according to the prior art mentioned above the housing extends through two floors, accordingly, the apparatus must be ed at the lower floor and the material treated in the apparatus must be removed at the next floor.
According to the present invention there is provided a cooling or freezing plant comprising: a) a housing having an inlet opening and an out-let opening, said openings being at substantially the same level; b) means for circulating cold air through the housing; c) a plurality of rectangular carriers for carrying material to be cooled or frozen, each said carrier being ?
flexible in a longitudinal direction; d) two tran.sport devices in said housing, each including supports ~or supporting a plural:ity o sa:id carriers horizontally and one above the other, one of the transport devices being arranged to move the carriers upwards and the other of the transport devices being arranged to move the carriers downwards; e) a transfer device in said housing for transferring carriers from one of the transport devices to the other; f) conveyor means comprising: i) two reversing roller means, one spaced from and behind the outlet opening, outside of said housing, and the other spaced from and in front of the inlet opening, outside of said housing,
An apparatus of this kind is previously known from United States patent specification No. 2,527,542. According to this United S~ates specifi cation the conveyor means in the housing constitute an elevator for upward movement of the carriers. The carriers are inserted manually into the housing at the bottom end thereof and the carriers are removed from the housing at the top end thereof. In order to achieve a high output it is necessary to construct the housing very high and according to the prior art mentioned above the housing extends through two floors, accordingly, the apparatus must be ed at the lower floor and the material treated in the apparatus must be removed at the next floor.
According to the present invention there is provided a cooling or freezing plant comprising: a) a housing having an inlet opening and an out-let opening, said openings being at substantially the same level; b) means for circulating cold air through the housing; c) a plurality of rectangular carriers for carrying material to be cooled or frozen, each said carrier being ?
flexible in a longitudinal direction; d) two tran.sport devices in said housing, each including supports ~or supporting a plural:ity o sa:id carriers horizontally and one above the other, one of the transport devices being arranged to move the carriers upwards and the other of the transport devices being arranged to move the carriers downwards; e) a transfer device in said housing for transferring carriers from one of the transport devices to the other; f) conveyor means comprising: i) two reversing roller means, one spaced from and behind the outlet opening, outside of said housing, and the other spaced from and in front of the inlet opening, outside of said housing,
2 ~ `
` .'.' .";
~0~0~58 and ii) conveying mealls for conveying said carriers longitudinally thereof along a carrier path rom one of the transport devices out o~ the outlet opening, around said one reversing roller means, along a return path to and around said other reversing roller, into the inlet opening and to the other of the transport devices, with the leading end of each carrier following im-mediately behind the trailing end of the preceding carrier so as to form a substantially unbroken carrier surface, the reversing rollers and the convey-ing means being arranged relative to the transport devices and the housing so as to provide substantially horizontal portions of said carrier path in front of the inlet opening and behind the outlet opening; g) means for depositing material to be cooled or frozen upon said carriers as they are conveyed through the horizo~tal part of the carrier path in front of the inlet opening; and h) means for removing cooled or frozen material from the carriers as they are conveyed through the horizontal part of the carrier path behind the outlet opening.
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~07~);Z58 By means of such construction it is achieved that the height of the housing is reduced and due to the specific arrangement o~
the carriers they will be moved from the exit opening o~ the housing to the inlet opening thereof as an almost unbroken conveyor band which makes the depositing of the material to ~;
be treated and the removal o~ the material after treatment very easy. Such easy way of operation is further supported by the arrangement of the two stations, vi~. the loading station and the removal station at the same level.
Further advantageous features of the present invention ~ ~
will become more apparent from the following description of ~ -a preferred embodiment of the cooling or freezing plant according to the present invention taken in conjunction with the accompany-ing drawing on which Figure 1 shows a vertical section of an embodiment of the cooling or freezing plant according to the invention in side view, and Figure 2 shows a vertical cross section of the plant illustrated in Figure 1 taken along the section line II-II in Figure 1.
On the drawing, 1 is an insulated housing which is pro-vided with means la for circulating cooled air through the housing. ~n the housing two transport devices 2 and 3 are arranged, viz. one 2 for upward movement as indicated by means of an arrow ~ and another 3 for downward movement as indicated by means of an arrow 50 The two transport devices 2 and 3 are almost indentical and, accordingly, only one of them, viz. the transport device 2, will be further explained. The transport device 2 comprises two end frames 7 and 8. Each of the end frames supports four sprockets, c~. Figure 2, wherein one. of the frames 7 of the transport device 2 i5 shown and from which it will be seen that the ~rame 7 supports the four sproc]cets :L0, 11, 12 and 13 arranged in pairs one above the other. An endless chain 15 and 16, respectively, runs about each pair of sprockets 10,11 and 12,13, respectively. At the opposite end of the conveyor device 2 four corresponding sprockets and two chains are mounted in the frame 8. The two chains arranged at each side o~ the transport device are mutually connected by means of supports in the form of angle irons of which only two, 17, are shown in Figure 2. ~owever, such supports 17 are secured evenly ~ ., ; : , . . . . . : ~ :
`` i~7~Z58 distributed along the full length of the chains. The mutual.
distance between two adjacent supports is selected according .
to the height of t.he material to be treated in the plant. From the above explanation it will be understood that the supports .
17 extend in the lonyitudinal direction of the housing 1 at each side of the housing. During operation of the plant the supports on the runs of the chains which face each other serve to support carriers 18 during the passage of the carriers 18 through the transport device.
Each carrier 18 consists, in a way known per se, of transversely extending lamellae which are mutually hinged in such a way that the carrier is flexible about axes extending perpendicular to the longitudinal direction o~ the carrier and, accordingly, it will be understood that, when a carrier is positioned in one of the transport devices, e.g. the transport device 2, the lamellae of the carrier extend from one of the supports 17 secured to the chain 15 and to the opposite support 17 on the other chain 16.
The carriers 18 are moved through the cooling or freezing plant shown by means of a system of chain conveyors. In Figure 1, 20 is a first one of these chain conveyors. It consists of two endless chains, viz. one at each side of the plant. The chain conveyor 20 runs around two reversing rollers 21 and 22 arranged outside the end of the housing 1 and opposite the lower part of the housing 1. At the lower right hand end of the conveyor device 2 the chain conveyor 20 runs about two rollers 23 and 24 in such a way that the chain conveyor adjacent these two rollers will be moved along a generally Z-shaped path. Pushing dogs 25 are secured to the chain conveyor for engagement with corresponding holes provided at the front end o:E each of the carriers 18. The mutual distance between the pushing dogs 25, as seen in the longitudinal direction of the chain conveyor 20, corresponds to the length of the carriers 18.Between the reversing rollers 21 and 22 the lower run of the chain conveyor 20 is guided in guiding rails having U-shaped cross section positioned at each side of the chain conveyor with their grooves facing each other so as to accomodate the side edges of the carriers and the chains of the chain conveyor 20. From the reversing roller 21 the upper run of the chain conveyor 20 extends :, . . .
. . . , :
- ---' 1~a~2S~
through and inle-t opening 26 into the housing l. The por-tion of ~
the upper run which extends outside the housing l serves as a l,`
depositing station for the material to be cooled or frozen in the housing l. At the opposite end of the housing l the chain conveyor 20 leaves the housing through an exit opening 27 and the part o~ the upper run of the chain conveyor 20 extending between the exit opening 27 and the reversing roller 22 serves as a removal station for the material which has been passed through the housing l.
Both at the inlet opening 26 and at the exit opening 27 two rotatable guiding devices are mounted. The guiding devices at the inlet opening 36 are schematically illustrated in Figure 2. In this figure the two guiding devices are designated 28 and 29, respectively. Each guiding device consists of rods which extend as generatrices of a truncated cone and are evenl~ distributed about the longitudinal axis of the cone.
Each guiding device is rotatable about the longitudinal axis of the co~responding cone by means not shown on the drawing.
The directions of rotation of the two guiding devices are indicated on Figure 2 by means o~ arrows 30 and 31.
A transfer device is arranged between the two transport devices 2 and 3 and comprises a second chain conveyor 34 also in the form of two chains arranged at the opposite sides of the housing l and a bridge 35 pivotally arranged about a horizontal shaft 36 arranged in the housing 1 and extending in the transversal direction of the housing. The chain conveyor 34 runs, at one end thereof, around a reversing roller 37 which as illustrated in Figure l is positioned at the top end of the frame 8 of the transport device 2. The chain conveyor 34 runs about another reversing roller 38 which as shown in Figure l is positioned at the top end of the right Erame of -the transport device 3. ~lso the chain conv~yor 34 is pro~ldecl with pushlng doys 39 ~or engagement with the holes at the ~ront end of the carriers 18.
40 designates a third endless chain conveyor which runs around two reversing rollers 41 and 42, one of which is positioned at the bottom of the right end frame of the transport device 3, and the other of which is positioned adjacent the exit opening 27. Also the third chain conveyor consists o~ two chains.
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,.. . .
.
~70258 setween the two reversing rollers 41 and 42 the chain conveyor 40 runs about three in-termediate rollers 4~, 45 and 46. Also the third chain conveyor is provided with pushing dogs 43 for the carriers.
The above explained plant operates i.n the ~ollowing way:
By means of the pushing dogs 25 the chain conveyor 20 moves the carriers 1~ along a path of transportation from the exit opening 27 in the direction indicated by an arrow, around the reversing roller 22 an~ towards the reversing roller 21 positioned in front of the front end of the housing. During the transfer between the two rollers 22 and 21 the carriers are suppor~ed as explained above by means of the U-shaped side gui~ing rails, not shown. Due to the spacing of the pushing dogs 25 along the conveyor 20 being selected corresponding to the length of the carriers, the carriers will be moved in such a way that the `. :
front end of a carrier follows immediately after the trailing end of the preceding carrier. Accordingly, along the path extending from the exit opening 27 to the inlet openi.ng 26 the carr.iers will be moved almost in the form of an unbroken or uninterrupted conveyor band or carpet. ~long the horizontally extending run between the reversing roller 21 and the inlet opening 26 material to be treated is deposited upon the carriers. Immediately after the front end of a carrier has been moved through the opening 26 the front end will be supported along its side edges by means of a rod of each of the two rod guiding devices 28 and 29, viz. at the narrow end of the truncated cones, wherein the rods in question are arranged as generatrices. The movement of the two guiding devices is synchronized in such a way that the front end of the rods in question, when the front encd of the carrier in question reaches the supports of the conveyor device 2, are positionecl at the same l.evel as the supports and, accordingl~, the rods in ~uestion form a supporting path for the carrier in question. During the continued movement of the chain conveyor 20 to the right in Figure 1, viz. towards the reversing roller 23, the carrier in question will be drawn on to two of the supports 17 of the conveyor device 2. During the period of time used by the chain conveyor 20 in order to move the front end of the carrier from one end of the transport clevice 2 to the other end thereof, the two supports 17 which support the carrier in question will move a distance `
.
, .
., . ~ . .
,, , ' ' ' ~ ' , 7~2~8 corresponding to the vertical distance between two adjacent sup-ports 17. Moreover, the movement of the rod cones i9 synchronized in such a way that the two rods which support the carrier beiny inserte~ are moved upwardly a ~istance corresponding to the dis-tance between the supports 17. ~ccordin~ly, also the trailing end of the carrier being inserted will be supported. When the front end o~ the carrier has reached the right hand end frame 8 of the transport device the pushing dogs 25 will be moved downwardly, viz. around the roller 23. Accordingly, the chain conveyor 20 will be disengaged from the carrier in question which simultaneously is being moved upwards due to the upward elevator movement of the transport device 2.
When a carrier 18 has a.rrived at the top position indicated in Figure 1, a set of pushing dogs 39 on the chain conveyor 34 will engage the holes at the front end of the carrier from above and the front end of the carrier in question will now be transferred along the upper surface of the bridge 35 and on to the set of supports of the conveyor device 3 which at that moment will be positioned at the top end of the transport device 3.
The insertion of the carrier into the transpoxt device 3 is carried out generally in the same way as the insertiOn i.nto the transport device 2. However, by inserting a carrier into the transport device 3 the carrier in question will be supported by means of the bridge 35. When the fror~t end of the carrier being transferred has reached the right hand end frame of the transport device 3, disen~agement of the carrier ln question and the chain conveyor 34 will be caused because the chain conveyor will be moved upwardly around the reversing roller 38 and, accordlngly, it will disengage the pushing dogs from the carrier in question which, simuitaneously/ will move downwardly.
When a carrier has reached the lowermost position i:Llustrated in FicJure 1 in the transport device 3, the front end of the carrier in question will be caught by a set of pushing dogs 43 on the chain conveyor 40 which will now draw the carrier in questi.on to the right towards the exit opening 27. The engagement i9 carrled out generally in the same way as at the top end of the transport device 3, however, at the exit opening the side edges of the carrier being removed from the housing, will be supported by means of the cone formed guiding rod devices .. , . . . . , . _ , :. ' , , . ,, . ~ . :
` ~ID7~25~
positioned at the exit opening. I'hese two guiding devices are rotated in directions opposite to the directions of the arrows 30 and 31 on Figure 2 in such a way that the rearward ends of the two rods supporting the carrier in question move downwardly corresponding to the downward movement of the transport device 3. Sliding along the rods in question the carrier will be guided to the first chain conveyor which at the e~it opening 27 will now be able to catch the front end of the carrier in question by means of a set of pushing dogs 25.
As it appears from Figure 1 the two ends of the upper run of the chain conveyor 20,which extend at the same level, offer working stations at which material may easily be deposited upon the carriers as they are moved through the opening 26 and material treated from the carriers moving out through the opening 27 may be removed.
All parts of the plant shown, with the exception of the pivot motion of the bridge 35, may be moved continuously which makes it possible to vary the time during which the material is maintained in the housing 1 solely by increasing or reducing the velocity of the parts corr~spondinyly. However, the bridge 35 must be pivoted about the shaft 36 so that the front end of the bridge may follow the set of supports 17 of the transport device 2 which delivers a carrier and so that the rear end of the bridye follows the set of supports 17 of the transport device
` .'.' .";
~0~0~58 and ii) conveying mealls for conveying said carriers longitudinally thereof along a carrier path rom one of the transport devices out o~ the outlet opening, around said one reversing roller means, along a return path to and around said other reversing roller, into the inlet opening and to the other of the transport devices, with the leading end of each carrier following im-mediately behind the trailing end of the preceding carrier so as to form a substantially unbroken carrier surface, the reversing rollers and the convey-ing means being arranged relative to the transport devices and the housing so as to provide substantially horizontal portions of said carrier path in front of the inlet opening and behind the outlet opening; g) means for depositing material to be cooled or frozen upon said carriers as they are conveyed through the horizo~tal part of the carrier path in front of the inlet opening; and h) means for removing cooled or frozen material from the carriers as they are conveyed through the horizontal part of the carrier path behind the outlet opening.
- 2a -, J~i ' . '. ' ' '` ,' ' ' ` ~
~07~);Z58 By means of such construction it is achieved that the height of the housing is reduced and due to the specific arrangement o~
the carriers they will be moved from the exit opening o~ the housing to the inlet opening thereof as an almost unbroken conveyor band which makes the depositing of the material to ~;
be treated and the removal o~ the material after treatment very easy. Such easy way of operation is further supported by the arrangement of the two stations, vi~. the loading station and the removal station at the same level.
Further advantageous features of the present invention ~ ~
will become more apparent from the following description of ~ -a preferred embodiment of the cooling or freezing plant according to the present invention taken in conjunction with the accompany-ing drawing on which Figure 1 shows a vertical section of an embodiment of the cooling or freezing plant according to the invention in side view, and Figure 2 shows a vertical cross section of the plant illustrated in Figure 1 taken along the section line II-II in Figure 1.
On the drawing, 1 is an insulated housing which is pro-vided with means la for circulating cooled air through the housing. ~n the housing two transport devices 2 and 3 are arranged, viz. one 2 for upward movement as indicated by means of an arrow ~ and another 3 for downward movement as indicated by means of an arrow 50 The two transport devices 2 and 3 are almost indentical and, accordingly, only one of them, viz. the transport device 2, will be further explained. The transport device 2 comprises two end frames 7 and 8. Each of the end frames supports four sprockets, c~. Figure 2, wherein one. of the frames 7 of the transport device 2 i5 shown and from which it will be seen that the ~rame 7 supports the four sproc]cets :L0, 11, 12 and 13 arranged in pairs one above the other. An endless chain 15 and 16, respectively, runs about each pair of sprockets 10,11 and 12,13, respectively. At the opposite end of the conveyor device 2 four corresponding sprockets and two chains are mounted in the frame 8. The two chains arranged at each side o~ the transport device are mutually connected by means of supports in the form of angle irons of which only two, 17, are shown in Figure 2. ~owever, such supports 17 are secured evenly ~ ., ; : , . . . . . : ~ :
`` i~7~Z58 distributed along the full length of the chains. The mutual.
distance between two adjacent supports is selected according .
to the height of t.he material to be treated in the plant. From the above explanation it will be understood that the supports .
17 extend in the lonyitudinal direction of the housing 1 at each side of the housing. During operation of the plant the supports on the runs of the chains which face each other serve to support carriers 18 during the passage of the carriers 18 through the transport device.
Each carrier 18 consists, in a way known per se, of transversely extending lamellae which are mutually hinged in such a way that the carrier is flexible about axes extending perpendicular to the longitudinal direction o~ the carrier and, accordingly, it will be understood that, when a carrier is positioned in one of the transport devices, e.g. the transport device 2, the lamellae of the carrier extend from one of the supports 17 secured to the chain 15 and to the opposite support 17 on the other chain 16.
The carriers 18 are moved through the cooling or freezing plant shown by means of a system of chain conveyors. In Figure 1, 20 is a first one of these chain conveyors. It consists of two endless chains, viz. one at each side of the plant. The chain conveyor 20 runs around two reversing rollers 21 and 22 arranged outside the end of the housing 1 and opposite the lower part of the housing 1. At the lower right hand end of the conveyor device 2 the chain conveyor 20 runs about two rollers 23 and 24 in such a way that the chain conveyor adjacent these two rollers will be moved along a generally Z-shaped path. Pushing dogs 25 are secured to the chain conveyor for engagement with corresponding holes provided at the front end o:E each of the carriers 18. The mutual distance between the pushing dogs 25, as seen in the longitudinal direction of the chain conveyor 20, corresponds to the length of the carriers 18.Between the reversing rollers 21 and 22 the lower run of the chain conveyor 20 is guided in guiding rails having U-shaped cross section positioned at each side of the chain conveyor with their grooves facing each other so as to accomodate the side edges of the carriers and the chains of the chain conveyor 20. From the reversing roller 21 the upper run of the chain conveyor 20 extends :, . . .
. . . , :
- ---' 1~a~2S~
through and inle-t opening 26 into the housing l. The por-tion of ~
the upper run which extends outside the housing l serves as a l,`
depositing station for the material to be cooled or frozen in the housing l. At the opposite end of the housing l the chain conveyor 20 leaves the housing through an exit opening 27 and the part o~ the upper run of the chain conveyor 20 extending between the exit opening 27 and the reversing roller 22 serves as a removal station for the material which has been passed through the housing l.
Both at the inlet opening 26 and at the exit opening 27 two rotatable guiding devices are mounted. The guiding devices at the inlet opening 36 are schematically illustrated in Figure 2. In this figure the two guiding devices are designated 28 and 29, respectively. Each guiding device consists of rods which extend as generatrices of a truncated cone and are evenl~ distributed about the longitudinal axis of the cone.
Each guiding device is rotatable about the longitudinal axis of the co~responding cone by means not shown on the drawing.
The directions of rotation of the two guiding devices are indicated on Figure 2 by means o~ arrows 30 and 31.
A transfer device is arranged between the two transport devices 2 and 3 and comprises a second chain conveyor 34 also in the form of two chains arranged at the opposite sides of the housing l and a bridge 35 pivotally arranged about a horizontal shaft 36 arranged in the housing 1 and extending in the transversal direction of the housing. The chain conveyor 34 runs, at one end thereof, around a reversing roller 37 which as illustrated in Figure l is positioned at the top end of the frame 8 of the transport device 2. The chain conveyor 34 runs about another reversing roller 38 which as shown in Figure l is positioned at the top end of the right Erame of -the transport device 3. ~lso the chain conv~yor 34 is pro~ldecl with pushlng doys 39 ~or engagement with the holes at the ~ront end of the carriers 18.
40 designates a third endless chain conveyor which runs around two reversing rollers 41 and 42, one of which is positioned at the bottom of the right end frame of the transport device 3, and the other of which is positioned adjacent the exit opening 27. Also the third chain conveyor consists o~ two chains.
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,.. . .
.
~70258 setween the two reversing rollers 41 and 42 the chain conveyor 40 runs about three in-termediate rollers 4~, 45 and 46. Also the third chain conveyor is provided with pushing dogs 43 for the carriers.
The above explained plant operates i.n the ~ollowing way:
By means of the pushing dogs 25 the chain conveyor 20 moves the carriers 1~ along a path of transportation from the exit opening 27 in the direction indicated by an arrow, around the reversing roller 22 an~ towards the reversing roller 21 positioned in front of the front end of the housing. During the transfer between the two rollers 22 and 21 the carriers are suppor~ed as explained above by means of the U-shaped side gui~ing rails, not shown. Due to the spacing of the pushing dogs 25 along the conveyor 20 being selected corresponding to the length of the carriers, the carriers will be moved in such a way that the `. :
front end of a carrier follows immediately after the trailing end of the preceding carrier. Accordingly, along the path extending from the exit opening 27 to the inlet openi.ng 26 the carr.iers will be moved almost in the form of an unbroken or uninterrupted conveyor band or carpet. ~long the horizontally extending run between the reversing roller 21 and the inlet opening 26 material to be treated is deposited upon the carriers. Immediately after the front end of a carrier has been moved through the opening 26 the front end will be supported along its side edges by means of a rod of each of the two rod guiding devices 28 and 29, viz. at the narrow end of the truncated cones, wherein the rods in question are arranged as generatrices. The movement of the two guiding devices is synchronized in such a way that the front end of the rods in question, when the front encd of the carrier in question reaches the supports of the conveyor device 2, are positionecl at the same l.evel as the supports and, accordingl~, the rods in ~uestion form a supporting path for the carrier in question. During the continued movement of the chain conveyor 20 to the right in Figure 1, viz. towards the reversing roller 23, the carrier in question will be drawn on to two of the supports 17 of the conveyor device 2. During the period of time used by the chain conveyor 20 in order to move the front end of the carrier from one end of the transport clevice 2 to the other end thereof, the two supports 17 which support the carrier in question will move a distance `
.
, .
., . ~ . .
,, , ' ' ' ~ ' , 7~2~8 corresponding to the vertical distance between two adjacent sup-ports 17. Moreover, the movement of the rod cones i9 synchronized in such a way that the two rods which support the carrier beiny inserte~ are moved upwardly a ~istance corresponding to the dis-tance between the supports 17. ~ccordin~ly, also the trailing end of the carrier being inserted will be supported. When the front end o~ the carrier has reached the right hand end frame 8 of the transport device the pushing dogs 25 will be moved downwardly, viz. around the roller 23. Accordingly, the chain conveyor 20 will be disengaged from the carrier in question which simultaneously is being moved upwards due to the upward elevator movement of the transport device 2.
When a carrier 18 has a.rrived at the top position indicated in Figure 1, a set of pushing dogs 39 on the chain conveyor 34 will engage the holes at the front end of the carrier from above and the front end of the carrier in question will now be transferred along the upper surface of the bridge 35 and on to the set of supports of the conveyor device 3 which at that moment will be positioned at the top end of the transport device 3.
The insertion of the carrier into the transpoxt device 3 is carried out generally in the same way as the insertiOn i.nto the transport device 2. However, by inserting a carrier into the transport device 3 the carrier in question will be supported by means of the bridge 35. When the fror~t end of the carrier being transferred has reached the right hand end frame of the transport device 3, disen~agement of the carrier ln question and the chain conveyor 34 will be caused because the chain conveyor will be moved upwardly around the reversing roller 38 and, accordlngly, it will disengage the pushing dogs from the carrier in question which, simuitaneously/ will move downwardly.
When a carrier has reached the lowermost position i:Llustrated in FicJure 1 in the transport device 3, the front end of the carrier in question will be caught by a set of pushing dogs 43 on the chain conveyor 40 which will now draw the carrier in questi.on to the right towards the exit opening 27. The engagement i9 carrled out generally in the same way as at the top end of the transport device 3, however, at the exit opening the side edges of the carrier being removed from the housing, will be supported by means of the cone formed guiding rod devices .. , . . . . , . _ , :. ' , , . ,, . ~ . :
` ~ID7~25~
positioned at the exit opening. I'hese two guiding devices are rotated in directions opposite to the directions of the arrows 30 and 31 on Figure 2 in such a way that the rearward ends of the two rods supporting the carrier in question move downwardly corresponding to the downward movement of the transport device 3. Sliding along the rods in question the carrier will be guided to the first chain conveyor which at the e~it opening 27 will now be able to catch the front end of the carrier in question by means of a set of pushing dogs 25.
As it appears from Figure 1 the two ends of the upper run of the chain conveyor 20,which extend at the same level, offer working stations at which material may easily be deposited upon the carriers as they are moved through the opening 26 and material treated from the carriers moving out through the opening 27 may be removed.
All parts of the plant shown, with the exception of the pivot motion of the bridge 35, may be moved continuously which makes it possible to vary the time during which the material is maintained in the housing 1 solely by increasing or reducing the velocity of the parts corr~spondinyly. However, the bridge 35 must be pivoted about the shaft 36 so that the front end of the bridge may follow the set of supports 17 of the transport device 2 which delivers a carrier and so that the rear end of the bridye follows the set of supports 17 of the transport device
3 which receives a carrier. However, such pivot motion may also easily be synchronized with the movements of the other parts of the plant because an increasin~ velocity of these parts need only be converted into a corresponding more rapid pivoting oE
the bridye 35.
.
.
the bridye 35.
.
.
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A cooling or freezing plant comprising:
a) a housing having an inlet opening and an outlet opening, said openings being at substantially the same level;
b) means for circulating cold air through the housing;
c) a plurality of rectangular carriers for carrying material to be cooled or frozen, each said carrier being flexible in a longitudinal direction;
d) two transport devices in said housing, each including supports for supporting a plurality of said carriers horizontally and one above the other, one of the transport devices being arranged to move the carriers upwards and the other of the transport devices being arranged to move the carriers down-wards;
e) a transfer device in said housing for transferring carriers from one of the transport devices to the other;
f) conveyor means comprising:
i) two reversing roller means, one spaced from and behind the outlet opening, outside of said housing, and the other spaced from and in front of the inlet opening, outside of said housing, and ii) conveying means for conveying said carriers longitudinally there of along a carrier path from one of the transport devices out of the outlet opening, around said one reversing roller means, along a return path to and around said other reversing roller, into the inlet opening and to the other of the transport devices, with the leading end of each carrier following immediately behind the trailing end of the preceding carrier so as to form a substantially unbroken carrier surface, the reversing rollers and the convey-ing means being arranged relative to the transport devices and the housing so as to provide substantially horizontal portions of said carrier path in front of the inlet opening and behind the outlet opening;
g) means for depositing material to be cooled or frozen upon said carriers as they are conveyed through the horizontal part of the carrier path in front of the inlet opening; and h) means for removing cooled or frozen material from the carriers as they are conveyed through the horizontal part of the carrier path behind the outlet opening.
a) a housing having an inlet opening and an outlet opening, said openings being at substantially the same level;
b) means for circulating cold air through the housing;
c) a plurality of rectangular carriers for carrying material to be cooled or frozen, each said carrier being flexible in a longitudinal direction;
d) two transport devices in said housing, each including supports for supporting a plurality of said carriers horizontally and one above the other, one of the transport devices being arranged to move the carriers upwards and the other of the transport devices being arranged to move the carriers down-wards;
e) a transfer device in said housing for transferring carriers from one of the transport devices to the other;
f) conveyor means comprising:
i) two reversing roller means, one spaced from and behind the outlet opening, outside of said housing, and the other spaced from and in front of the inlet opening, outside of said housing, and ii) conveying means for conveying said carriers longitudinally there of along a carrier path from one of the transport devices out of the outlet opening, around said one reversing roller means, along a return path to and around said other reversing roller, into the inlet opening and to the other of the transport devices, with the leading end of each carrier following immediately behind the trailing end of the preceding carrier so as to form a substantially unbroken carrier surface, the reversing rollers and the convey-ing means being arranged relative to the transport devices and the housing so as to provide substantially horizontal portions of said carrier path in front of the inlet opening and behind the outlet opening;
g) means for depositing material to be cooled or frozen upon said carriers as they are conveyed through the horizontal part of the carrier path in front of the inlet opening; and h) means for removing cooled or frozen material from the carriers as they are conveyed through the horizontal part of the carrier path behind the outlet opening.
2. A cooling or freezing plant according to claim 1, characterized in that the transfer device between the two transport devices in the housing comprises a bridge which is pivotally supported approximately at its centre.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK42176A DK144286C (en) | 1976-02-02 | 1976-02-02 | COOLING OR FREEZING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1070258A true CA1070258A (en) | 1980-01-22 |
Family
ID=8093329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA270,833A Expired CA1070258A (en) | 1976-02-02 | 1977-02-01 | Cooling or freezing plant comprising a housing with conveyor means for moving horizontally arranged carriers in vertical direction |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS52105347A (en) |
| BE (1) | BE851000A (en) |
| CA (1) | CA1070258A (en) |
| DE (1) | DE2704114C2 (en) |
| DK (1) | DK144286C (en) |
| FR (1) | FR2339825A1 (en) |
| GB (1) | GB1562671A (en) |
| IT (1) | IT1192170B (en) |
| NL (1) | NL7700884A (en) |
| NO (1) | NO140205C (en) |
| SE (1) | SE421300B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK147086C (en) * | 1977-07-14 | 1984-09-10 | Gram Brdr As | PLANT FOR TREATMENT OF GOODS WITH ELEVATOR BODIES FOR THE TRANSPORT OF TAPE-FORMED CARRIERS |
| DK150740C (en) * | 1977-09-01 | 1988-02-08 | Gram Brdr As | PROCEDURE FOR USE BY TRANSFER OF OBJECTS FROM A CONTINUOUS MOVED TRANSPORT TRANSPORT AND TO A RECIPIENT TRANSPORTER AND TRANSPORT PLANT FOR USE IN EXERCISING THE PROCEDURE |
| DE4242573C1 (en) * | 1992-12-16 | 1993-12-02 | Piller Oswald Baeckerei | Batch freezer with endless belt shelving arrangement - useful for freezing=in uncooked foodstuffs e.g. pretzel=shaped dough portions |
| DE19707716C2 (en) * | 1997-02-26 | 1999-04-22 | Oswald Piller | Food processing device |
| PE20110818Z (en) | 2008-12-11 | 2011-11-02 | Codensa S A Esp | ELECTRIC ENERGY DISTRIBUTION POST WITH BUILT-IN EARTHING SYSTEM |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE703373C (en) * | 1937-06-05 | 1941-03-07 | J M Lehmann Fa | Conveyor system for cooling, heating or drying devices, especially for chocolate work pieces |
| FR897969A (en) * | 1942-07-17 | 1945-04-06 | Teves Gmbh Alfred | Rosary refrigerator for products requiring intensive cooling |
| FR1005811A (en) * | 1947-09-27 | 1952-04-16 | Installation for the storage-storage and for the commissioning of containers intended to serve as a transport intermediary in an automatic distribution system | |
| GB699248A (en) * | 1950-11-13 | 1953-11-04 | Douglas James | Improvements in and relating to refrigerating apparatus |
| FR2091323A5 (en) * | 1970-05-02 | 1972-01-14 | Scardovi Diasco | |
| US3701263A (en) * | 1970-05-18 | 1972-10-31 | Barrett Arthur L | Direct contact food freezing |
| US3763991A (en) * | 1972-04-27 | 1973-10-09 | Product conveyor system | |
| FR2228689A1 (en) * | 1973-05-11 | 1974-12-06 | Matal | Handling system for temp. treatment tunnel - conveyor and loading systems ensure containers block tunnel entrances |
-
1976
- 1976-02-02 DK DK42176A patent/DK144286C/en active
-
1977
- 1977-01-28 NL NL7700884A patent/NL7700884A/en not_active Application Discontinuation
- 1977-01-31 FR FR7702632A patent/FR2339825A1/en active Granted
- 1977-02-01 CA CA270,833A patent/CA1070258A/en not_active Expired
- 1977-02-01 SE SE7701047A patent/SE421300B/en not_active IP Right Cessation
- 1977-02-01 DE DE2704114A patent/DE2704114C2/en not_active Expired
- 1977-02-01 NO NO770315A patent/NO140205C/en unknown
- 1977-02-02 BE BE174585A patent/BE851000A/en not_active IP Right Cessation
- 1977-02-02 GB GB4283/77A patent/GB1562671A/en not_active Expired
- 1977-02-02 JP JP1061177A patent/JPS52105347A/en active Pending
- 1977-02-02 IT IT19887/77A patent/IT1192170B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| NO770315L (en) | 1977-08-03 |
| DK144286B (en) | 1982-02-01 |
| FR2339825A1 (en) | 1977-08-26 |
| NO140205C (en) | 1979-07-18 |
| DK42176A (en) | 1977-08-03 |
| JPS52105347A (en) | 1977-09-03 |
| GB1562671A (en) | 1980-03-12 |
| NL7700884A (en) | 1977-08-04 |
| BE851000A (en) | 1977-05-31 |
| DK144286C (en) | 1982-07-05 |
| SE421300B (en) | 1981-12-14 |
| DE2704114C2 (en) | 1983-09-15 |
| SE7701047L (en) | 1977-08-03 |
| FR2339825B1 (en) | 1982-07-23 |
| DE2704114A1 (en) | 1977-08-04 |
| NO140205B (en) | 1979-04-09 |
| IT1192170B (en) | 1988-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |