DE2334443A1 - Apparatus for rapid heating of canned foodstuffs - without removal from the cans - Google Patents

Abstract

Foodstuffs or other preservers are heated in containers by moving the latter through a fluid heating medium, partic, hot water, with a constant succession of alternate dipping of the containers in and out of the medium, and in particular turning them end over end during their motion. Enables the contents of cans to be heated more rapidly and uniformly in the can than when the can is heated while stationary in e.g a saucepan of water.

Description

DI PL.-1 N G. O. R. KRETZSCH MAR 2 Hamburg ι

AT THE STRAW HOUSE PATENT ADVERTISER RUF Ο4 ../ “67 43

Hermann STOCK Κ / hp. - 4088

Machine factory

NEUMÜNSTER

Attorney file: 4088

Method of heating food or other items placed in containers Substances and device for carrying out the method

The invention relates to a method for heating in containers arranged food or other substances, (hereinafter also referred to as canned food).

The invention also relates to a device for carrying out the method with a flowable heating smedium, especially water, absorbing and heatable boiler.

If food or other substances mentioned above it is noted that the preferred application of the invention relates to food. Other substances include, for example, blood plasma or solutions.

When reference is made to containers, in the preferred embodiment such containers are cans.

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ACCOUNTS · DRESDNER BANK, ACCOUNT NO. 9329 * 7 «· POITICHICi HAMBURG NO. 193766-loc.

It is known to either pour tin cans into a saucepan after opening and warm them up when preparing food or to place the closed can in an optionally pot-shaped kettle filled with water and to warm it by heating the water. In both cases, the rewarming process takes a relatively long time. That The reason for this is that the tin can is stationary in the heating medium, i.e. in boiling water from the fact that this results in different temperatures both over the height of the can and the heat from the stationary can contents must penetrate from the outside inwards, so that the contents of the can are heated to different degrees results in the diameter direction. This is disadvantageous especially with a can with a food that already has Was subjected to heating because the reheating was repeated many times, i.e. also depending on the consistency and type of food that affects taste. When heating a tin can in a water bath different portions of the canned food are heated to different degrees and for different lengths of time.

It is true that one tries to do this by the other method given above by emptying the can into a pot-like kettle, because then the kettle contents can be stirred. Apart from that From the work process, however, there is the disadvantage that the kettle contents are later placed in special bowls or distribution container needs to be filled, apart from being heated in a pot by outgoing steam Loss of flavor leads.

The invention is based on the object of providing a method of the type mentioned above , by means of which the heating of foods arranged in containers is improved by a shorter heating time

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uniform treatment of all subsets of a unit is achieved is, at the same time a device for canned food is created for the implementation of the method should be, by which with short-term treatment in particular the original state, especially of individual foods, be it meat, vegetables or fruit, in terms of taste and is preserved in a handsome manner.

This object is achieved according to the method according to the invention solved that the container with canned food by a flowable Warming medium, especially heated water, but under constant successive and alternating Immersion and exit can be moved.

This procedure already has the advantage that by moving the container through the flowable heating medium a better heat transfer is achieved than if only there is a stationary arrangement of the canned food in the heating medium. Because of that, but with constant movement is alternately immersed in and out, however, the relative speed between the heating medium and the walls of the container increased, which does not have to be the case if the container without immersion and removal in a heating medium are moved because then the relative speed between this and the container walls through Can reduce entrainment of the heating medium. Dipping in and out also produces a stirring effect in the heating medium, with practically a temperature change in the heating medium depending on the distance is avoided by a heating device.

The alternating immersion and removal processes will not only the heating medium is constantly stirred, in a way that that a strong relative movement between the cans and the heating medium is always maintained in a way remains because the heating medium is also at

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longer operating times, not the movement of the container can customize.

The relative movement of the heating medium on the container wall is namely improved by the fact that the respective Layer of heating medium flows off when being lifted out, in particular the immersion and removal processes of the container Cause temperature equality in the entire working vessel, and by the relative movement that actually occurs between the heating medium and the container wall, by which it is certain the heating medium is constantly changed on the container wall, there is also a higher heat penetration achieved.

When using cylindrical cans, it is preferred that the containers are turned end over end as they move will. Such an overhead rotation of the container is advantageous because it also circulates the contents of the container and different partial quantities of the container contents alternately reach the container wall.

A device for carrying out the method is characterized in that a holding device in the boiler is movably mounted for at least one can and is connected to a movement drive in such a way that the at least a can is immersed in the heating medium one after the other and then lifted out will.

This includes the fact that a control arrangement for measuring the degree of filling of the boiler is provided in order to control the inflow of heating liquid, in particular water, this control arrangement limiting the degree of filling to a partial volume of the boiler.

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¥ enn also to the indicated movement of the container up and moving devices, possibly in the form of a to-and-fro movement or paternoster-like devices, included are, so is a particularly preferred embodiment in that a carrier is rotatably arranged as a holding device and its axis of rotation or shaft is essentially in or below the level determined by the level of the heating medium, in particular water, but an upper section of the carrier is above this level. Such a solution enables the immersion and removal movement with simple means and the end-over-end turn of the containers »

As a result of the alternating immersion and removal, the so-called "boiling up" of the heating medium surrounding the can, in particular the water, is unnecessary.

It should be noted at this point that the invention works, both in the field of the method and the device, preferably using water as the heating medium at a temperature below 100.degree. Lower temperatures can also be used to warm up canned food. The temperature range from 40 to 70 ° C. is considered to be particularly advantageous here. Higher temperatures are also included. These can be achieved by using, for example, salt water, glycerine, oil or the like as a heating medium or in overpressure versions of the device. The invention extends to such means.

The carrier is expediently designed in the form of a disk and several cans are fastened concentrically around the shaft, preferably with a radial axis, in a detachable manner. Here, too, it can be included that the tank is designed as a pressure tank and can be closed and is cylindrical, in which case the shaft is expediently provided concentrically to the cylinder axis, which is arranged essentially horizontally.

According to a particularly preferred embodiment of the invention, the carrier is designed as a basket-like frame with holding devices for cans in its periphery

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has an arrangement that the cans are provided with their longitudinal axis tangential to the turning circle, and "the kettle faces." in the upper area at least one closable opening through which cans arranged in the uppermost position are introduced or can be removed. In this case, the heating medium can reach the lower edge of the closable opening Be filled, in particular a permanent filling for several batches is preferred in order to generate the energy for the heating to keep the heating medium low.

It is particularly preferred that the holding devices combine a tension lock to fix the cans with a pivotable support arranged on the carrier in such a way that when the clamping device is opened it is in a position sloping towards the lower edge of the opening is brought. This is the introduction and discharge relieved by cans. An expedient embodiment provides that the rail is advantageously made up of rails in Axial direction of the carrier existing support is pivotably mounted on the end facing away from the opening and at opening of the clamp only a lowering movement of the support is effected.

For this purpose, the one facing the opening is useful At the end of the support a swivel bracket belonging to the holding and clamping device is arranged, which is at a distance from its Ends is pivotally mounted on the support and with its inner end with respect to the carrier on at least one support plate is movably guided, while the other outer end, which has greater distance from its pivot bearing, with a spring clip across the cans can be connected under tension of the same. It goes without saying that between the inner end of the swivel bracket and the support plate friction-reducing means can be provided, such as

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for example, roles at the end of the swivel bracket. Execution the part that extends over the cans acts as a spring clip at the same time when the clamping lock is opened a lifting of it from the cans.

The swivel bracket advantageously forms one over the lower one Loading or unloading track for cans extending out from the opening edge. As a result, if the heating medium remains in the boiler, the loading of the device facilitated.

In a device-like design, it is appropriate under an optionally pressure-tight container for the heating medium, in particular water, is provided for the boiler, and this The container has a downward-facing, swamp-like approach, at which the suction nozzle of a pump opens, which on the other hand with a deepest point of the boiler is connected by a line, with an overflow being provided at the boiler at essentially mid-height, which is connected to the container by a line and a heating device in the downward-facing attachment of the container, in particular a heater is arranged. This design with the container for the heating medium, which is arranged in particular under the boiler, has the advantage of that it is possible to work in a cycle and especially with a flow heater-like device when heating a sufficiently high temperature can be achieved for canned food with a relatively low output.

The height of the overflow on the boiler can be adjusted. This also allows the conditions to be adapted to the type of food according to the rotational speed of the Carrier to be changed.

It is also included that holding devices on the carrier made up of holding pegs directed parallel to the axial direction there are hook-shaped bends at their free end,

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and that between a group of retaining pins assigned to one another a can can be used and holding elements spanning the can are detachably arranged at the bends.

In each of the described embodiments it is preferred that the carrier receives several cans next to one another in its axial direction, possibly several discs one behind the other on a arranged on the shaft, rotatably connected to this tubular sleeve.

The invention is illustrated below using an exemplary embodiment explained schematically, which is shown in the drawing. In the drawing show:

1: a side view of an advantageous embodiment according to the invention in section;

FIG. 2: an end view of FIG. 1 in schematic form Representation, wherein in particular the carrier is shown behind the front wall, its opening in this front wall however is indicated;

3: a partial view essentially corresponding the line III - III in Figure 1 to explain a support for the carrier;

4: a principle view of another according to the invention Contraption;

Fig. 5: a side view of the device in a simple design in section;

FIG. 6: an end view in section along the line VI - VI in FIG. 5.

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First, the execution form according to Flg. 1 to 3 that particularly preferred is described.

In a practical cased apparatus frame 50, a boiler 51 is arranged, which can than be down above deeper and the shaped U-approximately mid-height on the front wall 52 and rear wall 53 upwardly open bearing $ k _t 55 for the ends of a shaft 56 of the basket-like carrier 57. In the area of the rear bearing 55 protrudes the end of a shaft 58 introduced through a sealed bushing 57, which is connected via a countershaft 59 »60 to a gear drive motor 61, which is supported, for example, by special supports 62, 63 and on one of the supports Plate 6k is attached.

Both the end of the shaft 58 and that engaged therewith coming end 65 of shaft 56 form coupling halves in such a way that that, for example, the end 65 of the shaft 56 is a diagonal Has slot in which a diagonal spring 66 on the shaft 58 can be inserted when a vertical orientation of the parts is provided.

At the top, the boiler 51 has an opening which can be closed by a cover 67, through which the basket-like carrier 57 as a whole can be removed or inserted. However, this is not necessary for ongoing operation.

To load the basket-like carrier is in the front Boiler wall 52 has an opening 68 provided through a flap-like cover 69 can be closed, the lower Edge around joints 70 can be folded outwards, so that in the open state it is a system table at the lower edge of the Opening 68 forms.

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As can also be seen from FIG. 2, the basket-like carrier consists of a strut frame which is attached to the shaft 56.

X)
is ordered and has radially extending struts 71-76, which each end approximately in the middle under a holding device. It can be seen from FIG which in Fig. 1 two are denoted by 77, 78. Rails 79, 80 or 81, 82 arranged at right angles to them are firmly connected to these struts and connected at the ends at an angle to rails 83, 84 and 85, 86 arranged on adjacent struts, so that practically polygons, in the example hexagons, are formed , on the outside of which the holding devices for cans are attached. The hexagons, of which the one at the front is smaller than the one at the rear, are connected in the area of the rails 79-86 by connecting rods 87, 88 running obliquely to the shaft 56, two of which are each provided in parallel. On these connecting rods, support plates 89, 90 are correspondingly arranged in pairs towards the front, as shown in FIG. 2 for the support plates 89 and 91.

The holding device has supports 92, 93 », each are formed for example from two parallel rails over the support plates and on the rear wall 53 facing End of a carrier around joints 94, 95 are pivotable. At the front end of the rails 96, 97 forming the support 92, there is advantageously one consisting of two struts 98, 99 Swivel bracket 100 mounted so that it can be swiveled around joints 10, 102, that a short lever arm 103 protrudes vertically downwards when the clamping device is closed and rests on the support plate 89, 91, while at the upper end 104 a provision for example a slot for a toggle fastener element 105 is arranged. The toggle fastener element in Shape of an eyelet is pivotally attached to the front end of a spring clip IO6, for example, two on the

x) each of a disk 120, 121 attached to the shaft

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Support 92 arranged cans 107, 108 overlaps. The spring clip 106 is with play under the outer bezels 109 »HO held by the basket-like carrier so that it cannot spread outwards at will

Starting from the closed position shown in FIG. 1, it can be seen that the flap-shaped cover 69 is open can be, with a spring abutment 111 to maintain the substantially horizontally unfolded position Support plates 89 »91 reach under. After releasing the tension lock element 105 the spring clip IO6 springs up, and when the swivel clip 100 is unfolded, at the same time the support 92 in the direction of the connecting rod 87 lowered. The front box 108 is still held between abutment elevations 112, II3 on the support 92, but can can easily be removed, whereby the can 107 then automatically rolls forward towards the opening.

A so-called heating flange is located on the rear wall of the boiler 53 provided, on which a heating element 115 protruding into the boiler and on the outside an operating and connection device 116 is arranged for the heating device.

There are also fittings 117 and connections for an inlet and drainage of water is provided, valve devices 118 being actuatable from the front, for example via a linkage 119 are.

From Fig. 1 it can be seen that the shaft 58 on the outside the rear wall is completely enclosed, while the upwardly open U-shaped bearing element is arranged on the inside is.

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According to Fig. K _f, which is to be regarded as a schematic representation, a kettle 1 is provided, which is for example cylindrical and with a horizontal axis.This kettle is penetrated by a concentrically arranged shaft 2 on which at least one disc-shaped carrier 3 for cans k _t 5 is rotatably mounted This boiler is closed at one end and can be closed at the other end with a pressure lock

In particular, under the boiler there is an optionally pressure-tight container 6. This container has a downward directed, executed as approach 7 recess, which is designed in the manner of a sump and below at its deepest Place is tapped through the suction port 8 of a pump 9. The suction nozzle ends expediently in the area of the upper end of approach 7 »so that hot water that collects in this approach is removed in the area of the highest temperature. Of the The pressure port 10 of the pump 9 is connected via a line 11 to the lowest point 12 of the boiler 1 and the suction port of the pump is connected accordingly.

A heating device, in particular a flow heater 13t, is provided in the downwardly directed extension 7. When arranging a flow heater in the approach 7, this is designed in the manner of such.

The boiler 1 has essentially in its middle height, preferably, but with respect to this adjustable in a certain range, an overflow 14, which by a Line 15 is connected to the container 6.

It should be noted that the pump 9 causes a backflow of the liquid, especially in the container, from the boiler 1 when it is not running into the container. Such pumps are known

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The container 6 has, in particular without the interior of the extension 7, a volume which corresponds essentially to the filling level of the boiler 1 up to the overflow Ik.

The heating medium is preferably water. This is initially located in the container 6. After the heating device 13 has been switched on, it is heated and conveyed into the boiler 1 by the pump 9, the carrier 3 with the tinned food k, 5 being rotated at the same time. The hot water stirred through this rises to the level of the overflow Ik and then flows back through the line 15 into the container 6 and in particular into the recess in the attachment 7. This recess is therefore always kept so full that the heating device 13 is covered .

FIGS. 5 and 6 show a more detailed representation.

The boiler 6, which is also cylindrical with a horizontal axis and is thermally insulated on the outside, has a rear wall 17 through which a sealed passage 18 for a shaft 19 passes. Bearings 20, 21 for the shaft are located on a bracket 22 on the rear wall 17 · Ib. Inside the kettle, the shaft carries a disk 23 in a rotationally fixed manner (see also FIG. 6, in which it is shown, for example, for the tin can Zk ).

A group of holding devices 25, 26, 27, 28, 29, 30, 31, 32 is arranged in the form of retaining pegs, between which a tin can can be placed · These retaining pegs are angled outwards at their free ends with regard to the group-wise arrangement and wear at these points the can spanning holding elements 3 * 1, 35. These Retaining elements can for example consist of bands or rubber or similar material.

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The boiler 16 is closed on the side facing away from the rear wall 17 by a pressure lock 36 known per se.

The boiler is by means of side supports 37f 38 from one Base .39 supported on which, attached to the brackets shown, the water tank 40 is located. This one has the downward facing Anaatz 4l, to which the pump 42 can be connected. According to FIG. 5, however, is the connection line 49 led to the bottom of the water tank 40, which at this point may have a swamp-like design in such a way that from the extension 4l, in which a heating device is arranged, the details in FIGS. 5 and 6 are not detailed is shown, incoming hot water reaches the connection line 49. In the approach 4l opens the line 43, which of the overflow 44 runs out. This overflow is at the level of the shaft 19, for example.

It can also be seen that a line 46 opens out at the lowest point of the boiler l6. This line corresponds to the Line 11 in Fig. 4 and is assigned to the pump accordingly.

The pump 42 is integrated with a motor. Furthermore, a transmission 47 is provided on the console 22, to which a motor 48 is flanged, which causes the rotation, the control device such that the motor 48 and the motor of the pump 42. work at the same time, i.e. when boiler l6 begins to be filled, but when the pump is switched off, the motor of the pump first 42 and only then the motor 48 can be switched off. This is not shown in detail and can be achieved with simple means will. Relay circuits are possible, with respect to the inertia and the size of a device certain timing elements can also be arranged.

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Claims (1)

Claims 1, Method of heating food or other substances placed in containers (hereinafter also known as canned food), characterized in that the container with canned food is replaced by a flowable Warming medium, especially heated water, but under continuously successive and alternating Immersion and immersion are moved. 2. The method according to claim 1 using cylindrical cans, characterized in that the containers be turned when moving End over End. Apparatus for carrying out the method according to claim or 2 with a boiler that absorbs a flowable heating medium, in particular water, and can be heated, characterized in that in the boiler (l, l6, 51) a holding device (3, 23, 57) for at least one The can (4, 5, 24, 107, 108) is movably mounted and is connected to a movement drive (47, 48, 6l) in this way is that the at least one can is continuously dipped in succession in the heating medium and then is lifted out. 409886/1126 2334U3 k. Device according to claim 3, characterized in that a support (3t 23, 57) is rotatably arranged as a holding device and its axis of rotation or shaft (56) is essentially in or below the level determined by the level of the heating medium, in particular water, but a upper portion of the beam is above this level. 5. The device according to claim 3, characterized in that the carrier (3, 23) is disc-shaped and around the shaft (2, I9) several cans concentrically, preferably with a radial axis, are releasably attached. 6. The device according to claim k, characterized in that the carrier (57) is designed as a basket-like frame, which on its periphery holding devices (92, 1OO, 106) for cans (107, 108) in an arrangement that the cans with their longitudinal axis are provided tangential to the turning circle and that the boiler has at least one closable opening (68) in the upper area through which cans arranged in the uppermost position can be introduced or removed. 7. The device according to claim 6, characterized in that the opening (68) is arranged in a front wall (52). 8. The device according to claim 6, characterized in that the holding devices (92, 100, IO6) have a tension lock (105) for fixing the cans in combination with a support (92, 93) pivotably arranged on the carrier have that this when opening the clamping device in a sloping towards the lower edge of the opening Position is brought. 409886/1126 -lh 9. Apparatus according to claim 8, characterized in that the advantageous from rails (96, 97) in the axial direction of the carrier (57) existing supports (92, 93) on that of the end facing away from the opening is pivotably mounted and when the toggle fastener (105) is opened, only one Lowering movement of the support is effected. 10 «Device according to claim 9, characterized in that at the end of the support facing the opening (92, 93) a swivel bracket (100) belonging to the holding and clamping device is arranged, which is spaced from its ends is pivotally mounted on the support (92, 93) and with its inner end with respect to the carrier on at least a support plate (89, 91) is movably guided, while the other outer end (104), the greater distance from its pivot bearing (10l, 102) has, with one of the cans (107, 108) overlapping spring clip (106) can be connected under tension thereof. 11. The device according to claim 10, characterized in that the swivel bracket (100) a loading or unloading track for cans that extends beyond the lower edge of the opening forms. 12. Device according to one of claims 6 to 11, characterized in that the support (92, 93) at least for the can arranged on the opening side has abutment elevations (112, 113). 13. Device according to one of claims 3 to 5 »characterized in that an optionally pressure-resistant container (6, ko) for the heating medium, in particular water, is provided under the boiler (l, l6), this container (6, ho) a downward, swamp-like 409886/1126 2334U3 led approach (7 » kl) , at which the suction nozzle (8) of a pump (9» kz) opens which, on the other hand, is connected to a lowest point (12) of the boiler (l, l6) by a line (ll, 46) is, and that an overflow (lk _t kk) is provided on the boiler (l, 16) at essentially mid-height, which is connected to the container by a line (l5 >> 3), whereby in the downward-facing approach ( 7 »* H) a heating device (13), in particular a flow heater, is arranged in the container« Ik, device according to claim 5 and I3, characterized in that holding devices (25-32) on the carrier (3, 23) consist of holding pegs directed parallel to the axial direction with hook-shaped bends at their free end and that between a group of holding zap assigned to one another fen a box (2 * 4 ·) can be used and the holding elements (3 ^ »35) spanning the box are detachably arranged on the bends. 15 · Device according to claim 6 or 13 »characterized in that the carrier (3, 23, 57) in its axial direction accommodates several cans (107 »108) next to one another, possibly several slices one behind the other on one on the Velle (19) arranged, rotatably connected to this tubular sleeve has. 409886/1126 Blank page