Methods for cutting food product

Abstract

Methods and apparatuses for reducing food products. Such a method includes introducing a food product into an impeller rotating within a casing about an axis thereof. The impeller has paddles and pockets defined by and between adjacent pairs of the paddles. The paddles are circumferentially spaced so that each pocket is sequentially radially aligned with a circumferential opening of the casing as the impeller rotates. Each paddle has a relief slot defined in an outer radial edge of the paddle. Food products are expelled from the pockets and cut with a knife disposed at the circumferential opening of the casing as the impeller rotates and the pockets travel past the circumferential opening. The knife defines a cord of the casing, extends into the path of the paddles, and passes through the relief slots of the paddles.

Claims

1. A method of reducing the size of food product, the method comprising: rotating an impeller within a casing about an axis of the impeller, the impeller comprising a drum, paddles mounted to the drum, and pockets defined by and between adjacent pairs of the paddles, each of the paddles being associated with one of the pockets that is circumferentially ahead thereof in a direction of rotation of the impeller, the paddles being circumferentially spaced along a perimeter of the drum so that each pocket is sequentially radially aligned with a circumferential opening of the casing as the impeller rotates, each paddle having a relief slot defined in an outer radial edge of the paddle; introducing a food product into the impeller; pushing the food product with a surface of a first of the paddles associated with a first of the pockets; expelling the food product from the first pocket; cutting the food product with a knife disposed at the circumferential opening of the casing as the impeller rotates within the casing and the first pocket travels past the circumferential opening, the knife defining a cord of the casing and having a cutting edge located within an interior of the casing so that the knife extends into the path of the paddles; and passing the knife through the relief slots of the paddles as the impeller rotates and the pockets pass across the circumferential opening.

2. The method according to claim 1, wherein the surface of each paddle is approximately perpendicular to the cutting edge of the knife at the moment the paddle thereof has completed its pass across the circumferential opening of the casing.

3. The method according to claim 1, wherein the surface of each paddle is approximately parallel to the knife at the moment a food product carried thereby encounters the knife.

4. The method according to claim 1, wherein the knife is oriented perpendicular to the axis of the impeller.

5. The method according to claim 1, wherein the knife is secured to the casing at oppositely-disposed ends of the knife.

6. The method according to claim 1, wherein the knife makes a single cut through the food product.

7. The method according to claim 6, wherein the knife halves the food product.

8. The method according to claim 1, further comprising performing additional processing on the food product downstream of the knife.

9. The method according to claim 8, wherein the additional processing comprises cutting the food product into strips or dicing the food product downstream of the knife.

10. A method of reducing the size of food product, the method comprising: rotating an impeller within a casing about an axis of the impeller, the impeller comprising a drum, paddles mounted to the drum, and pockets defined by and between adjacent pairs of the paddles, each of the paddles being associated with one of the pockets that is circumferentially ahead thereof in a direction of rotation of the impeller, the paddles being circumferentially spaced along a perimeter of the drum so that each pocket is sequentially radially aligned with a circumferential opening of the casing as the impeller rotates, each paddle having a relief slot defined in an outer radial edge of the paddle; introducing a food product into the impeller; pushing the food product with a planar surface of a first of the paddles associated with a first of the pockets; expelling the food product from the first pocket; cutting the food product with a knife disposed at the circumferential opening of the casing as the impeller rotates within the casing and the first pocket travels past the circumferential opening, the knife defining a cord of the casing and having a cutting edge located within an interior of the casing so that the knife extends into the path of the paddles; and passing the knife through the relief slots of the paddles as the impeller rotates and the pockets pass across the circumferential opening; wherein the planar surface of each paddle is approximately perpendicular to the cutting edge of the knife at the moment the paddle thereof has completed its pass across the circumferential opening of the casing.

11. The method according to claim 10, wherein the planar surface of each paddle is approximately parallel to the knife at the moment a food product carried thereby encounters the knife.

12. The method according to claim 10, wherein the knife is oriented perpendicular to the axis of the impeller.

13. The method according to claim 10, wherein the knife is secured to the casing at oppositely-disposed ends of the knife.

14. The method according to claim 10, wherein the knife makes a single cut through the food product.

15. The method according to claim 14, wherein the knife halves the food product.

16. The method according to claim 10, further comprising performing additional processing on the food product downstream of the knife.

17. The method according to claim 16, wherein the additional processing comprises cutting the food product into strips or dicing the food product downstream of the knife.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a fragmentary view of a machine adapted for slicing, dicing, shredding and/or granulating food products in accordance with the prior art.

(2) FIG. 2 depicts a machine adapted for cutting food product in accordance with an embodiment of this invention.

(3) FIGS. 3 and 4 are perspective and cross-sectional views, respectively, of an impeller section of the machine of FIG. 2.

DETAILED DESCRIPTION OF THE INVENTION

(4) FIGS. 2 through 4 depict an apparatus 50 configured to initially perform a single-cut operation, such as a halving operation, on food products. The apparatus 50 comprises a casing-impeller assembly 52, an electric motor 54, a drive housing 56, and a frame 58 that supports the apparatus 50. The motor 54 powers a drive assembly (not shown) within the drive housing 56, which in turn drives an impeller assembly 60 of the casing-impeller assembly 52, as will be discussed in more detail below. The apparatus 50 is similar to the DiversaCut 2110 model represented in FIG. 1, and as such preferred embodiments of the apparatus 50 would further include a hopper (not shown) for delivering food product to the casing-impeller assembly 52 and a discharge chute (not shown) through which processed food product is discharged from the casing-impeller assembly 52, consistent with the previous description of FIG. 1.

(5) The casing-impeller assembly 52 is the operative section of the apparatus 50 for reducing the size of food product. As more particularly evident from FIGS. 3 and 4, the casing-impeller assembly 52 comprises the aforementioned impeller assembly 60, which is enclosed and coaxially mounted for rotation within an annular-shaped casing 62 that defines a stationary housing for the impeller assembly 60. Both the impeller assembly 60 and casing 62 have generally cylindrical shapes with coinciding axes. The casing 62 has a circumferential wall 64 that defines an open axial end 66 through which food product is able to enter the impeller assembly 60, and further defines a circumferential opening 68 (FIG. 3) through which food product is able to exit the impeller assembly 60. The circumferential opening 68 is shown in FIGS. 3 and 4 as being closable with a gate 70 mounted to the casing 62. The impeller assembly 60 comprises a drum 72 with an open axial end coinciding with the open axial end 66 of the casing 62, a number of axially-orientated, circumferentially-spaced paddles 74 that are mounted near the perimeter of the drum 72 so as to be adjacent the wall 64 of the casing 62, and a cylindrical or conical cap 76 (FIG. 4) that rotates with the drum 72 and paddles 74 within the casing 62. The circumferential opening 68 and gate 70 of the casing 62 cooperate with a pair of guards 78 to define an outlet 80 of the casing-impeller assembly 52. The size of the outlet 80 is adjustable by pivoting the gate 70 toward and away from the casing 62. With this arrangement, as the impeller assembly 60 rotates in a clockwise direction (as viewed in FIG. 4), pockets defined by and between adjacent pairs of paddles 74 capture food product 96 introduced into the impeller assembly 60 through the open axial end of its drum 72, and centrifugal forces produced by rotation of the impeller assembly 60 cause the product 96 to be urged radially outward into engagement with the casing 62.

(6) Disposed at the outlet 80 is a cutting assembly 82 that includes a knife 84 whose ends are secured between a pair of knife holders 86 and 88 attached to the casing 62. The knife 84 is oriented in a plane perpendicular to the axis of rotation of the impeller assembly 60, and is mounted to lie on a cord of the casing 62 so that a cutting edge 85 of the knife 84 is located within the interior of the casing 62. Because the knife 84 extends into the path of the impeller paddles 74, the paddles 74 are shown as having relief slots 90 in their outer radial edges through which the knife 84 passes as the impeller assembly 60 rotates and the paddles 74 pass across the circumferential opening 68 in the casing 62. The knife 84 is shown in FIGS. 2 through 4 as not passing entirely through the radial extents of the paddles 74, and therefore the relief slots 90 are not required to extend entirely through the paddles 74. However, it is foreseeable that the paddles 74 could be constructed so that each is entirely divided by its relief slot 90 to comprise two paddle portions separated by its slot 90.

(7) In view of the above, as the impeller assembly 60 rotates in a clockwise direction (as viewed in FIG. 4), the paddles 74 effectively push the product 96 through the knife 84 instead of simply propelling the product 96 through the knife 84. After the knife 84 has passed through the product 96, the product 96 is ejected from the casing 62 through the circumferential opening 68 and then exits the apparatus 50 through the outlet 80. As evident from FIG. 4, the knife 84 may be the only cutting element of the cutting assembly 82 and the apparatus 50, or the apparatus 50 may be configured to perform additional processing on the product 96 downstream of the knife 84, such as with circular knives 92, and/or crosscut knives 94 similar to the type employed by the DiversaCut 2110.

(8) As seen in FIG. 4, the paddles 74 define planar surfaces that push the food product 96 and are preferably inclined relative to radials of the impeller assembly 60. A suitable inclination angle is believed to be approximately thirty degrees from a radial of the impeller assembly 60 that passes through an outer radial edge of the paddle 74, with each paddle 74 inclined so that its inner radial edge is circumferentially ahead of its outer radial edge in the direction of impeller rotation. With this orientation, FIG. 4 shows the planar surface of a paddle 74 as roughly parallel to the knife 84 at the moment a food product 96 carried by the paddle 74 encounters the knife 84. As also shown in the embodiment of FIG. 4, the planar surface of a paddle 74 is roughly perpendicular to the knife 84 at the moment the paddle 74 has completed its pass across the circumferential opening 68 of the casing 62. FIG. 4 also depicts the circumferential opening 68 in the casing 62 as spanning approximately seventy degrees of the casing circumference, and the portion of the knife 84 that projects into the interior of the casing 62 spans approximately fifty-five degrees of the casing circumference. It should be understood that the angular span of the circumferential opening 68 determines what inclination angle will be necessary to ensure that the paddles 74 will be roughly parallel to the knife 84 at the moment the food product 96 encounters the knife 84. While an inclination angle of about thirty degrees is suitable for the embodiment shown, lesser and greater inclination angles are foreseeable, as are lesser and greater angular spans for the circumferential opening 68. Furthermore, optimal outer and inner diameters of the impeller assembly 60 and casing 62, respectively, and radial extents of the paddles 74 may depend on the food product 96 to be processed. In an example in which the outer diameter of the impeller assembly 60 is roughly twenty inches (about 50 cm), the inner radial edge of each paddle 74 may be a radial distance of, for example, about two inches (about 5 cm) or more from the outer perimeter of the impeller assembly 60.

(9) The apparatus 50 represented in FIGS. 2 through 4 can be adapted to cut a variety of different types of food products, and more particularly to cut food product while the food product still resides within the pockets between adjacent paddles 74. In the embodiment shown in FIGS. 2 through 4, a single knife 84 is shown centrally located within the circumferential opening 68 of the casing 62, with the result that the cut produced by the knife 84 essentially halves the product 96. However, the knife holders 86 and 88 are preferably adjustable to enable the position of the knife 84 to be adjusted relative to the circumferential opening 68 in directions parallel to the axis of the impeller assembly 60, such that cuts other than halving can be made in products as they are ejected by the impeller assembly 60 through the opening 68. It is also within the scope of the invention that more than one knife 84 could be held by the knife holders 86 and 88, such that multiple cuts can be simultaneously made through the food product 96.

(10) While the invention has been described in terms of a specific embodiment, it is apparent that other forms could be adopted by one skilled in the art. For example, the physical configuration of the apparatus 50, its impeller assembly 60 and casing 62, and particular components of the apparatus 50 could differ from that shown, and various materials and processes could be used to manufacture the apparatus 50 and its components. Therefore, the scope of the invention is to be limited only by the following claims.