IMPROVED JUICE EXTRACTOR FOR INDUSTRIAL USE

Abstract: The present application for a Patent concerns a Juice Ex­ tractor for industrial use, consisting of an outer shell (1), which is cylindrical in shape and obtained by extrusion from a light material such as aluminium. The electric driving motor (2) is housed inside this shell (1) and there is a linear potentio­ meter (5) for changing the centrifugal speed on one of its sides. Above this section is the liquidiser head or basin (9) with its pertinent inlet (13) at the top for introducing the prod­ ucts to be liquidised and the outlet (10) at the bottom for the liquid. There is also an elbow-lever, which, when in the up­ right position, enables the upper centrifugal section to be sealed; the centrifugal device is activated by a suitable micro­ switch.

Description: This invention relates to juice extractors for industrial use and more particularly to a juice extractor comprising a basic shell forming an upright tubular component housing the electric motor with the apropiate clearance along with its fittings, said basic shell including openings enabling cooling air to penetrate easily. Exhaustive search work has been carried out with the aim of obtaining juice extractor of minimum cost with regard to a manufacture and of high performance and simplified structure which is as practical as possible. From the US-A-2 655 354 a mixer and processor for home use according to the first part of the main claim is known. This device comprises a bottom plate which is provided with openings for the intake of air. These openings are beneath the housing of the extractor. The housing stands on three feet, but there is only a short distance between the base plate of the housing and the surface where the known device stands. Therefore, if the surface is not plain the openings could be closed thereby preventing the intake of cooling air. Therefore, the object of the invention is to ensure that the function of cooling air is not interrupted, even if the extractor stands on a not plain surface. This object is accomplished by the features of the characterizing part of claim 1. As cooling devices for the juice extractor, the base of the shell is supplied with fins with openings which enable air to penetrate easily and flow through the chamber defined by the aforementioned shell, thus providing adequate ventilation with the air leaving through a gap between such shell and the cover supporting and protecting the motor with its complementary sealing gland. The stand of this improved juice extractor for industrial use has been constructed with a short, truncated cone-shaped part which is of lesser diameter than the shell and screwed to a base of of the shell so as to form an integral part of it. Such stand is extended outwards horizontally at the base of this to form a circular rim in a concentric position with the essential non-slip flexible element underneath designed to ensure the stability of the extractor as a whole; furthermore, it is equipped with a cable-storage compartment in its truncated cone-shaped neck, constituting an additional feature of the practicability. Two components which form essential parts of the extractor since they are determining factors for its practical use, are attached to the upper part or head of the juice extractor. One of these is the basin in which the products to be liquidised are placed and contains the shredding and centrifugal devices for obtaining the juice from the fruit; the second part concerns the lid which is supplied with a large handle connected to the part covering the cylindrical section formed by the shell and the support for the motor. This handle has a right angle in its upper section to make its use as a lever easier for sealing the basin tightly with the lid by means of complementary circular toric joints. As the extractor is sealed, so the handle activates a microswitch which connects the electric circuit to start the appliance, and alternatively, to stop it when such lid is opened. A suitable pipe has been designed to allow for the exit of the juice obtained, located on the base of the aforementioned basin containing the chopping and centrifugal devices. Such pipe is cylindrical in shape, preferably with a downward slant and oblique cut at its free end so as to facilitate the exit of the liquid extracted. A cavity has been made in the upper section or lid of the extractor in which the pulp accumulates from the products being liquidised once these have been shredded and squeezed by centrifugal action, with the pulp passing out through the wide outlet or spout that forms a continuation of such lid and also slants downwards to empty into an auxiliary container designed for such use. In order to make it easier to pass the products to be liquidised through the feed tube located on one side of the lid, a pusher has been included. This is preferably shaped like a truncated pyramid with a rectangular section and dulled edges. As spring collet, placed over the component emptying out the pulp, determines the appropriate functional orientation and fixture of such element. Further features and advantages of the invention will be best understood from the following detailed description of a certain specific embodiment with reference to the accompanying drawing, in which: Figure 1 provides a free side view of the juice extractor with a quadrantal section in the cylindrical shell and its bases. Figure 2 shows another free side view at a right angle to the view offered in figure 1. Figure 3 provides a detailed illustration of the intenal microswitch device with the on/off positions. Illustrated in figure 1 is a shell 1 defining a chamber in which is located a motor 2 and its complementary parts, including a flange 3 and a fixing screw 4, a potentiometer 5 for changing the centrifugal speed and a master safety switch 6 that supplies electricity to the motor. Over the aforementioned shell is located a cover 7 supporting and protecting the motor, together with a gland 7' with the microswitch which is illustrated in detail in figure 3 being housed inside beneath the protective support and connected to one end of the handle 8 which activates such microswitch to start or stop the motor of the extractor, according to which position it is in. The position of a basin or shredding and centrifugalization area 9 can be seen in the head or upper part of the appliance, supplied at its base with a tubular pipe 10 for the exit of the juice, the lid 11 with the fittings 12 for attachment to the handle and for fixing this in the raised position is also visible as is a feed tube 13 for addition of the product to be liquidised and an outlet 14 for the pulp or waste resulting from centrifugal action, with such outlet being supplied with a collet 15 which fixes it in the right position. Further down, beneath a base of the shell, there are fins supplied with openings 16 designed to allow air to penetrate for cooling the motor by surrounding this as it rises and then leaving through a gap 17 form between the shell 1 and cover 7. Finally, a stand of the extractor can be seen with a short section shaped like a truncated cone 18 and its external protuberance 19 in the shape of a concentric circular rim, equipped with the corresponding non-slip device 19' underneath. In figure 2, apart from the features indicated by reference signs 1, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 18, 19, and 19' already commented on, a pusher 20 facilitating the introduction of the product in the extractor can be seen easily. The functional characteristics of the microswitch housed inside the appliance next to one end of the handle 8 below the protective support, according to the description of figure 1, are represented in figure 3 by a circular part 21 with an angular notch that, by means of a connecting device 22 closes or opens the circuit with a button 23 that stops and starts the extractor, with the handle being moved to the vertical raised position designed for such purpose when the motor is activated, and to the horizontal or lower position when this is to be stopped, once the product has been liquidised as desired.

Claims: Juice extractor, comprising a basic shell (1) forming an upright tubular component housing the electric motor (2) with an appropriate clearance along with its fittings, said basic shell (1) including openings (16) enabling cooling air to penetrate a chamber, defined by the shell (1), and flow between the motor (2) and said shell (1) before passing out of said shell (1) characterized in, that a gap (17) is formed between said shell (1) and a cover (7) where the air can pass out after flowing through the chamber between the motor (2) and said shell (1) and that a short truncated cone-shaped element (18) of lesser diameter than said shell (1) is screwed to a base of said shell (1) so as to form an integral stand, that the cone-shaped element (18) ends in a horizontal protrusion in the form of a concentric circular rim (19) forming a stand and that the openings (16) are beneath the base of said shell (1). Juice extractor, according to claim 1, characterized in that the shell (1) is obtained by extrusion and made of aluminium so as to reduce weight. Juice extractor, according to claim 1 or 2, characterized in that the circular rim (19) has a non-slip flexible strip underneath to keep the unit stable. Juice extractor, according to one of the claims 1 to 3, characterized in further comprising an upper part consisting of a basin (9) containing shredding and centrifugal devices for obtaining the juice and of a lid (11) which is equipped with a handle (8) which activates a micro switch (22, 23) for starting and stopping said motor (2). Juice extractor, according to one of the claims 1 to 4, characterized in that a cylindrical pipe (10) which has a downward slant and which is cut obliquely across its free end is fitted to the bottom of the basin (9). Juice extractor, according to one of the claims 1 to 5, characterized in that a wide outlet (14) is formed as a continuation of the lid (11), said outlet (14) being slanted downwards. Juice extractor, according to one of the claims 1 to 6, characterized in that on one side of the lid (11) a feed tube is located and that a pusher (20), preferably in shape of a truncated pyramide, with rectangular section and dulled edges, which has been designed to fit said feed tube (13) is included. Juice extractor, according to one of the claims 1 to 7, characterized in that a spring collet (15) located over the outlet (14) secures this in an appropriate direction and functional position.

Inventors: CAPDEVILA, GUILLERMO
Applicants: SAMMIC, S.A.
Application year: 1986
Main classification: A47J19
IPC codes: A47J42, A47J19