Drum dryer

FIELD: textiles, paper.

SUBSTANCE: drum dryer contains a rotating drum (2) installed inside the outer housing and adapted to receive items for drying. The drum (2) comprises a cylindrical side wall (3), a front flange (11) with a hole for clothes, a rear flange (5), and at least one sound-absorbing coating (8), located on the outer surface of the rear or the front flange of the drum (2) to absorb the sound waves produced by items rotating inside the drum (2) which strike on its wall during the drying process. The sound-absorbing coating (8) comprises a metal sheet (9) and a viscous layer (10) placed between the sheet (9) and the outer surface of the drum (2).

EFFECT: improved drying.

1 cl, 2 dwg

 

The present invention relates to a drum dryer having improved acoustic properties.

Household machines for drying clothes usually contain a rotating drum made of sheet steel, in which clothing is flipped in the circulating there hot air to remove moisture and drying clothes. When the clothes are spinning inside the dryer drum, it constantly falls on the wall of the drum, and the heavier elements of the service, as well as buttons, zippers and other metal or, at least, solid jewelry that can be associated with objects sasasasa service or freely between them (e.g., coins), tend to strike against the wall of the drum of the dryer and create noise in the drying process. Moreover, in this case, the drum works as a resonance chamber, so that the level of noise pollution, with the time taken.

Thus, there is a need to reduce to an acceptable level of noise created by clothing and other items, rotating inside the dryer drum.

To solve this problem, the drum is usually manufactured so that it had increased thickness of the walls. It is, however, also means an increase in the overall weight of the drum, which, no doubt, greatly complicates the Assembly process. In addition, the manufacture of the drums with the increased thickness causes a corresponding odor the abolition of production.

To compensate for or reduce noise generated by clothing and other items that rotate inside the drum of the dryer, possible known solutions consist in the use of foam sheets stacked on the inner surface of the cylindrical wall of the dryer drum as a sound-absorbing means. However, the problem of such dryers is that selected for such applications, the foam must withstand high temperatures, which it will be subjected during drying. Moreover, it may be difficult to mount such material inside the drum, making the final cost of the dryer can, ultimately, lead to unacceptably high sale price.

Another attempt to reduce noise emitted by rotating inside the dryer things, is a manufacturer of rotary drum dryer with multi-layered walls, made of sheet metal laid between sheets of metal plastic. Although this solution does not use Styrofoam sheets for fastening on the inner surface of the wall of the drum dryer, the use of a layered wall of the dryer drum containing two sheet steel plates, interconnected by means introduced between the layer of polymeric material, in any case leads to a rather complicated in the production of the e design of the drum, which due to the inevitable increase in the price of production ultimately increases the sales price of the clothes dryers.

Thus, there is a need in the dryer service, endowed with superior sound quality that does not require significant departure from existing designs of drum dryers and, thus, in a relatively small degree of increasing overall production costs dryers.

The invention is directed to the creation of the dryer wash linen, which largely eliminates the problems resulting from the typical limitations and drawbacks of existing machines.

The present invention is the creation of the dryer washable linen, the design of which can prevent problems arising in the drum vibration and noise.

In the present invention this task, along with an additional, which will become apparent from the subsequent explanation, is solved in a dryer service, including signs that are defined and listed in the attached claims.

The characteristics and advantages of the present invention will be clearer from the description is not limiting of the invention of example with reference to the illustrative drawings.

Figure 1 shows the drum drum of a dryer in accordance with the present invention, a front view in perspective;

figure 2 - b is Rabanne drum of a dryer in accordance with the present invention, rear view.

Drum dryer equipped with an external housing adapted for mounting on the control panel of the machine, and the rotating drum 2, placed in it, along with the means of the actuator and blowing air.

This outer casing has a front wall with door, enabling the user to gain access into the interior of the drum through the access opening. The drum 2 is mounted inside the housing for rotation around its Central axis by a motor connected to the drum by the belt.

In addition, the drum 2 is mounted inside the outer casing so as to be on the path of the air flow, allowing the dry hot air to remove the moisture from rotating in it service.

The drum 2 includes a cylindrical side wall 3 made of metal, in particular stainless steel, the inner surface of which imposed the so-called grips 4 to provide the desired rotation of service, and is made of metal front flange 11 with an opening for access to the clothes and the rear flange 5.

The drum is made in the form of a single design, while the rear flange 5 is mechanically connected to the shaft 6 for rotation of the drum 2.

In the Central part of the rear flange 5 around the shaft 6, is provided with multiple holes for responsive is supply through them drying air.

In an alternative embodiment of the invention, the drum may consist of a cylindrical side wall 3, is installed rotatably on the front flange 11 and the rear flange 5, which is stationary with respect to the outer housing. To prevent leakage between the cylindrical side wall 3 and the front and rear flanges 11 and 5 posted by sealing elements. The rear flange 5 provided with means for supplying air to the inside of the drum 2 for flow of hot air.

Mainly drum dryer contains at least one sound-absorbing floor 8, United with the outer surface of the drum 2 to absorb the sound waves created by falling inside a rotating drum or other, and this acoustic cover 8 includes a metal sheet 9 and a viscous layer 10 placed between the sheet 9 and the outer surface of the drum 2.

The sound waves generated by a shock service and, especially, related solid or metallic elements, such as buttons or zippers on the inner surface of the metal wall of the rotating drum 2, for the most part absorbed by the viscous layer 10, which due to its viscoelastic properties largely converts these sound waves and vibrations into heat, warming up, thus, the viscous layer 1.

On the other hand, the sound waves that pass through the viscous layer 10, is transferred to the metal sheet 9, where they are vulnerable to further weakening.

Sound-absorbing coating 8 created viscous layer 10 and the metal sheet 9, forms a system that dampens and absorbs sound waves propagating in a certain frequency range, dependent on characteristics of the viscous layer 10 and the metal sheet 9.

Deserves special attention, which, as has been established, the viscous layer, having a thickness in the range from 100 to 300 μm and a surface density in the range from 50 g/m2to 150 g/m2proved to be particularly effective in absorbing sound waves with frequencies lying in the range from 500 to 10,000 Hz, which is typical frequency noise generated beating against the wall of the drum 2 clothes. On the other hand, it was found that the metal sheet 9, having a thickness in the range from 150 to 300 μm, optimally combined with viscous layer 10 having the above characteristics.

In practice it was found that the more the thickness of the wall of the drum (cylindrical side wall 3, the front flange 11 and the rear flange 5 and the metal sheet 9 are similar to each other, if not preferably equal to each other, the more effective sound-absorbing and damping characteristics.

More t the th, it was found that the most efficient absorption of the sound waves is achieved by using sheet metal 9 of the same metal material as the drum 2. For example, in the case of execution of the drum 2 stainless steel execution of the sheet metal 9 stainless steel ensures the best characteristic absorption of sound waves.

Special efficiency showed a viscous layer 10, formed by an adhesive based on silicone or acrylic adhesive, due to the viscoelastic properties of both adhesives and the fact that such adhesives can be used in the temperature range from -40°C to 180°C while maintaining constant their sound-absorbing and damping properties over a long period of time, regardless of temperature changes to which they are exposed in the drying process.

In addition, such adhesives demonstrate the particular effectiveness when working in cycles of drying at typical temperatures of the walls 3 and 5 of the drum 2, as well as in case of overheating due to an error operation or damage.

Moreover, the viscous layer 10 allows you to quickly attach the metal sheet 9 to the drum 2 without using any fastening means, such as screws or the like, required today.

In a particularly preferred embodiment of the invention, which is displayed by figure 1, the drum 2 is covered with many having a sound-absorbing coating elements 8, which largely cover the major part of the external cylindrical surface of the drum 2, so that they are able to maximize the effect of the absorption of sound waves. Viscous layer 10 is pre-applied to the surface of the metal sheet 9, which must be associated with the outer surface of the drum 2. Then the metal sheet 9 is glued to the outer cylindrical surface of the drum 2.

Alternatively, the sound-absorbing coating 8 may consist of a separate element, which is wrapped around the outer cylindrical surface of the drum 2 around its contour, completely covering the surface.

In the most preferred form of the sound-absorbing coating 8 is associated in addition to the external cylindrical surface of the drum 2 and the outer surface of the front flange 11 and the rear flange 5 of the same drum 2, as shown in figures 1 and 2 where the above-mentioned sound-absorbing coating 8 may, even in this case, to be presented in the form of a single element and multiple sound-absorbing coatings 8 fixed on said front and rear flanges 11 and 5.

In the private embodiment of the present invention a cylindrical side wall 3 of the drum 2 is made of a polymeric material, t is given as the rear flange 5, connected with the shaft 6, is made of metal, in particular stainless steel. This sound-absorbing coating 8 of the consolidated only with the said flange 5, and not with a cylindrical side wall 3. Suitable absorbent coating 8 to provide a front flange 11.

Thus, it can be argued that the drum dryer in accordance with the present invention effectively achieves its main goals by equipping its drum with superior sound-absorbing characteristics.

Sound-absorbing coating according to the present invention in addition to the greatest efficiency in absorption and damping of sound waves caused by clothing and related items, beating against the inner wall of the drum, it is very simple to manufacture and attach to the drum and thereby eliminates the disadvantages normally inherent in existing units of this type.

1. Drum dryer containing a rotating drum (2)mounted inside the outer casing and adapted to receive things for drying, and the said drum (2) has a cylindrical side wall (3), front flange (11) with a hole for clothes and rear flange (5) and connected to the outer surface of the drum (2), at least one sound-absorbing coating (8) to absorb the sound waves produced by the things of rotations is characterized mentioned inside the drum (2) and hits on his wall in the drying process, moreover, the aforementioned at least one sound-absorbing coating (8) includes a metal sheet (9) and a viscous layer (10)disposed between the sheet (9) and the outer surface of the drum (2), characterized in that at least one sound-absorbing coating (8) is connected only to the outer surface of the rear flange and/or front flange (5,11) drum (2).

2. Dryer according to claim 1, characterized in that the metal sheet (9) and the drum (2) is made of the same metallic material.

3. Dryer according to claim 1, characterized in that the cylindrical lateral wall (3) of the drum (2) is made of polymeric material, the rear flange (5) is made of metal, and at least one sound-absorbing coating (8) is connected with the outer surface of the rear flange (5).

4. Dryer according to any one of claims 1 to 3, characterized in that the thickness of the viscous layer (10) is from 100 to 300 microns.

5. Dryer according to claim 4, characterized in that the surface density of the viscous layer (10) is from 50 g/m2to 150 g/m2.

6. Dryer according to claim 5, characterized in that the thickness of the metal sheet (9) is from 150 to 300 microns.

7. Dryer according to claim 5, characterized in that the thickness of the metal sheet (9) is equal to the wall thickness (3, 5, 11) of the drum (2).

8. Dryer according to claim 1, characterized in that the viscous layer (10) is an adhesive based on silicone or acrylic is lei.



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: invention relates to the method of determining of at least one parameter of textile products and/or at least one parameter of a programme execution in the device of textile products treatment, in particular, in a drying device, a refreshing device or in a washing machine with a drying function. At that the device of textile products treatment contains a compartment intended for keeping the treated textile products, and at least one device for feeding additive, in particular, a steam. The method includes the steps, at which: the additive is supplied from at least one device for feeding additive, the response (S, A, C) of textile products in the compartment is determined as reaction to feeding supply, and by processing a specific response at least one parameter of textile goods is determined. The parameter of textile products is a type of textile products and/or the number of textile products. Also a textile products processing device is disclosed, having a control module and made with the ability to determine at least one parameter of textile products.

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32 cl, 5 dwg

FIELD: textiles, paper.

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FIELD: textiles, paper.

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FIELD: textiles, paper.

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35 cl, 4 dwg

FIELD: engineering.

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6 cl, 4 dwg

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8 cl, 3 dwg

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74 cl, 3 dwg

FIELD: textile, paper.

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63 cl, 3 dwg

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3 cl, 3 dwg

FIELD: drying technique.

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EFFECT: increased efficiency and enhanced reliability in operation.

12 cl, 5 dwg

FIELD: drying technique.

SUBSTANCE: locking unit is positioned in front panel of drying machine, on door of which machine hook is located, said hook being adapted for engagement with locking unit and disengagement therefrom. Locking unit has lock main body equipped with protrusions and retaining openings in its opposite sides, and lock cover having openings for accommodation of protrusions, and retaining openings provided at cover opposite sides. Protrusions are formed in active part protruding from carrier part of lock main body, and retaining openings are formed in carrier part, immediately under protrusions. Openings for accommodation of protrusions are provided in portion protruding from edge of cover lock planar portion, and retaining protrusions are formed at ends of lock cover protruding portion. On introducing of lock cover into main body of lock, protrusions become embraced with openings for accommodation of protrusions, and retaining protrusions are introduced into retaining openings. Such construction allows lock cover to be assembled with lock main body for one operation.

EFFECT: increased efficiency, simplified construction and reduced time for assembling of lock unit.

9 cl, 5 dwg

FIELD: mechanical engineering.

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16 cl, 7 dwg

FIELD: mechanics.

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6 cl, 7 dwg

FIELD: individual supplies.

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EFFECT: operational convenience at any height position of washing or drying machine.

8 cl, 17 dwg

FIELD: textile industry.

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EFFECT: possibility of preventing folds of the dried clothes or eliminating clothes folds.

10 cl, 7 dwg

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