MXPA97009702A - Suction unit for covers, ovens and electrical, domestic similar appliances that have a surrounding with two or more adjacent barrels and separate - Google Patents

Abstract

This invention relates to a suction unit for cutlery, furnaces and similar domestic electric appliances, consisting of a double auger housing in which the two augers are adjacent, but separated in such a way that two separate suction inlets can be made sobare the same, one on the outer side and the other on the inter side

Description

SUCTION UNIT FOR CUBI ERTAS. OVENS AND ELECTRIC APPLIANCES. DOM ÉSTICOS SI M I LARES WHAT HAVE A SURROUNDING WITH TWO OR MORE BARRENAS ADJACENT AND SEPARATE DESCRI PCIÓ N OF THE I NVENCIÓN This design patent application refers to a suction unit for domestic appliances, furnaces, and appliances, if it has two or more fans housed in adjacent adjacent and separate augers. This invention relates to a powerful suction unit of the type having an individual electric motor that drives various fans. In the suction units of this type currently available on the market, the ends of an arrow on which two fans are fixed with a false tongue project from the sides of such an engine; Each fan consists of a disk that supports a series of vanes that have a horizontal axis facing the opposite side of the motor. Currently, suction units of this type are provided with a special enclosure consisting of two separate adjacent drills, placed one near the other; while the motor that drives both fans is mounted flush in the center of such envelope. Each side of the shell is provided with an opening (or suction inlet), through which the external air is pulled into each auger by the respective fan. Considering that the internal compartment of each auger is separated from the internal compartment of the adjacent auger, it is evident that each auger uses only one air suction inlet: ie the opening on the outer side. Furthermore, such positioning of the suction inlets is also the reason why the vanes of the two fans of the conventional suction units are turned upwards from the outer side of the envelope. It should be remembered that the output of each of these conventional augers is provided with a hole through which air previously drawn through the side inlet is discharged. The scope of this invention is to improve the performance and method of operation of such double auger suction units. In particular, this has been achieved by designing a special enclosure that can house a motor and a relevant pair of fans mounted on its sides, characterized by the use of two adjacent drills, but separated in such a way that a space is formed between them. The decision to separate the two bits also leads to the creation of a second suction inlet on each of them. This means that each of the new bits can use two separate suction inlets; the first entry, that is, the traditional entry, is made in the vicinity of the external door, while the second entrance, that is, the new entry, is made on the internal side, that is, on the same side that houses the motor. In this respect, it is evident that the inner surfaces of the two bits, as well as their relevant openings are placed, in the case of the shell according to the invention, in an opposite position, but separated from the space that is by above. It should be noted that the presence of two suction inlets on each auger is extremely important in terms of operation and performance of the double fan suction unit. It is evident that in the case of the unit according to the invention, each auger envelope, thanks to its two suction inlets, will have, under the same conditions (power and rpm of the motor, auger dimensions, etc.), a capacity of suction significantly greater with respect to conventional ones. Furthermore, it should be noted that most of the air flow that occurs obviously in the new drills, with respect to that which occurs in conventional drills that have an individual suction inlet, allows the first to have the same suction capacity. the second with the engine running at a lower speed and thus ensuring energy savings and a lower noise level. It should also be noted that the two lateral inlets on each auger have allowed the use of special ventilators; in fact, each of these ventilators is of the type consisting of a central disc, which has a series of the respective perimeter etas, on both sides. It appears that each vent mounted on the new suction unit in question uses a series of fins turned upwards from the outer side of the respective auger and a second identical series of fins turned upwards from the inner side of the same auger. Finally, it should be noted that the presence of the space above between the two augers does not alter the transverse dimensions of the envelope, whose outlet flow outward can be adjusted directly without the use of a manifold or pipe fitting, to the pipe through from which the air is discharged to the outside. This characteristic of the unit according to the invention is particularly important in that in this form it is perfectly interchangeable with the conventional suction units, with respect to which, however, it has a higher flow, greater head and better performance at the same power absorbed and vice versa. Attention should be paid to the fact that all of the above advantages and aspects, which derive from the idea of using two adjacent but separate augers, increase as the number of separate adjacent augers increases. For clarity, the description will continue with reference to the accompanying drawings, which are for purposes of illustration and not a limiting sense and which use two structurally different embodiments of the same invention, one consisting of two adjacent and separate bits. , and the other consisting of three adjacent and separate augers. Figures 1 and 2 refer to the first embodiment, while Figures 3 and 4 refer to the second embodiment.

Figures 1 and 3 are axonometric views of the fan motor according to the invention in the two previous structural modes; Figures 2 and 4 are the cross section of the enclosure housing the fan motor used respectively in Figures 1 and 3. With reference to Figure 1, the motor (1) of the suction unit in question is housed in part in a cover (2) ci l indrica, provided externally with three radial extremities (3) placed at 1 20 ° two of which are turned up and one is turned down, all ending with the respective pins, which have the vertical axis (4) each with the enlarged extreme base (4a). In the case of the embodiment according to the invention shown in Figure 1, such radial ends (3) are incorporated in a disc (5) made outside the cylindrical cover (2). Two fans (6) of the type consisting of a ring having a respective series of vanes (6a) on their two sides, are fixed with false tongues at the ends of the through arrow of the motor (1), ie on the side right and on the left side of the engine (1). With reference to Figure 2, the shell (7) consists of two adjacent bits (8) separated by a space (9).

Both sides of each auger (8) are provided with the suction inlets (8a and 8b), the first (8a) on the outer side and the second (8b) on the inner side. Figure 2 shows the arrows illustrating the flow of air extracted through both the two external suction inlets (8a) and through the two suction inlets (8b). The number (10) refers to two of the three shirts fitted in the space (9) designed to accommodate the pins (4) provided at the ends of the radial ends (3) projecting from the cover (2) to ensure secure fixing of the fan motor unit to the enclosure (7). It is evident that the anterior disk (5) provided on the outside of the cylindrical cover (2) is placed between the two opposite inlets (8b) provided in the vicinity of the internal sides of each bit (8); such disc (5) has an accident prevention function, that is, it prevents the operator from inserting a finger into such suction inlets. It is considered that a detailed description of Figures 2 and 4 is not necessary insofar as the only difference in the second structural embodiment of the invention, with respect to the first embodiment, is the use of three separate and adjacent bits (80), separated by the respective spaces (90).

In the second mode, there are three fans (6) despite the fact that there is only one motor (1). In this aspect it should be noted that the same numbers used in Figures 1 and 3, were used in Figures 2 and 4, to illustrate the corresponding structural components in the first and second embodiments of the invention.

Claims (1)

R EI VI N D I CATION IS

1 . A suction mode of the type consisting of an electric motor, housed in a cylindrical current, and traversed transversely by an arrow having several fans fixed with a false tongue at its ends; each of the ventilators operates inside a auger provided with respective output fl ow output and which forms an integral part of the envelope that completely houses the fan motor unit and which is characterized in that the series of augers are adjacent, but separated by a space and characterized by the fact that the augers have two suction inlets, of which one is on the outer side and the other is on the inner side; provided that each fan has two series of vanes, one placed in the direction of the suction inlet, on the outer side of the respective auger, and the other placed in the direction of the suction inlet on the inner side of the same auger .