RU2340267C1 - Device for controllable ventilation under clothing - Google Patents

Abstract

FIELD: ventilation.

SUBSTANCE: device for controllable ventilation under clothing includes flare in the form of tapered cone to be inserted into cylindrical elements of clothes. Lower base of flare includes casing where elastic open ring and lace with limiters are located. Cylindrical ventilation insert is located under flare and takes no more than 2/3 of length of its forming line. Rings from elastic material are located in upper and lower parts of insert. Upper base of flare is built into insert stitching to the main fabric of clothes. In free position, lower base of flare is open to its limits due to elastic forces of open ring. When lace is pulled tight, cross section area decreases and no air is supplied under clothes in maximum tightened position.

EFFECT: controllable air ventilation under clothes depending on changing meteorological conditions of environment and physical loading level.

3 dwg

Description

The invention relates to the clothing industry and can be used to create special and other clothes to improve its hygienic properties.

To improve the hygienic properties of clothing, it is necessary to provide controlled ventilation under clothing, depending on changes in meteorological factors of atmospheric air and the level of physical activity of a person.

A device is known for providing ventilation of the working space under conditions of elevated ambient temperature [1], containing uniformly placed fins and ventilation ducts. The ribs are made of a plastic substance, for example polyethylene foam, and are connected with a body made of the same material. The ribs and body contain vertical through holes, and the body and base of the ribs are connected to the mesh fabric. The ventilation ducts are formed by the body, the lateral surfaces of the ribs and the mesh fabric. In the presence of external sources of heat, heating of the upper clothes occurs, a temperature gradient is created between the skin and outer clothing. When a person moves, the efficiency of heat removal by wet paths increases due to the changing deformation of the channels and the external air pressure.

The authors propose to make the device in the form of modules and to form clothing complexes from them - vests, trousers.

The disadvantage of using the device in clothes made of airtight materials is the accumulation of moisture in the clothing area and its condensation on the inner surface of the clothes.

Known moisture protective suit [2], made of water and airtight material, the details of which are equipped with means to counter the undesirable effects of water and moisture and are connected to the product. Details of the costume are assembled from interconnected elements having the shape of hexagons. The upper and lower parts of each hexagon are not connected to other elements and form air exchange pockets closed by upper and lower valves. The invention provides air exchange with the environment and eliminates the ingress of water into the clothing area.

However, this device does not provide the necessary ventilation of the clothing area when using airtight materials, since this design does not create a stable air gap between the person’s body and clothing and the regulation of ventilation intensity.

Known ventilated garment [3] for ventilating warm air heated by the body of the user and entering the gap between the body and the cloth of clothing, and these ventilation elements are made on the corresponding holes of the specified garment and collected by at least one mesh, which is superimposed on the specified the corresponding holes of the garment, and spacers, which are made at least in the inner part of the garment forming the specified gap between the body of the user the weaving device and the cloth of the garment, the garment is lifted, in particular, at least the net is lifted from the body of the wearer using said bracing means.

However, this ventilated garment is not free from the above disadvantages.

Known clothing for protection from the cold [4], in which the regulation of convective heat transfer is carried out using means for changing the bore of the ventilation holes in the form of girdle belts overlapping the ventilation holes of the outer layer.

As our studies have shown, these ventilation openings are not effective, for example, in clothing to protect from rain.

The closest in technical essence and the achieved result is protective clothing for the beekeeper [5] with ventilation inserts and a system of elastic ribs that form a gap of a given thickness and stable air channels between the inner surface of the tissue and human skin. The clothes also have valves for opening and closing the ventilation inserts, and the ventilation inserts have corrugations, the shape of which is supported by an elastic element, and the valves are made in the form of a ring, while the valves are sewn into the protrusions of the corrugations of the ventilation inserts along the inner line of the ring, and along the outer line rings are assembled on an elastic band.

The disadvantage of this type of ventilation is the limitation of the possibility of regulating the effectiveness. Ventilation elements can only be in two stable states - open or closed

The problem to which the invention is directed, is to improve the thermal state of a person in clothes from air- and waterproof materials under changing weather conditions and levels of physical activity due to the regulated ventilation of air under the clothes.

This is achieved by the fact that the device for providing controlled ventilation under the clothes, containing an insert of mesh material, in contrast to the prototype, is a truncated cone socket with a drawstring in the lower base, in which an elastic open ring and a cord with limiters are located, while a cylindrical ventilation insert is located under the bell and occupies no more than 2/3 of the length of its generatrix; rings of elastic material are located in the upper and lower parts of the insert, while the upper base the flare is embedded in the seam of the insertion being sewn to the main fabric of the garment, and in the free state, the lower base of the bell is maximally disclosed due to the elastic forces of the open ring, and when the cord is tightened, the cross-sectional area of the base decreases, and in the extremely tightened state, the access of air to the clothes area ceases.

The invention is illustrated by drawings, where in Fig.1 shows a General view of the device for ventilation of the clothing space, Fig.2 is a diagram of the device, Fig.3 is a scan of a conical bell.

A device for providing ventilation of the working space contains a bell in the form of a truncated cone 2, which is embedded in the cylindrical elements of the clothes 6. The base of the bell contains a drawstring, in which there is an elastic open ring 4 and a cord with stops 5. A cylindrical insert from mesh 1 is located under the bell, the upper and lower sections has pockets in which closed rings of elastic material 3 are located. The pockets are formed by the main fabric of the object sewn on the seam allowance for the sewing-in cylinder a different insert from the net to the garment. The upper base of the socket is welded to the upper part of the air intake.

The device operates as follows. The conical shape of the bell 2 contributes to the intake of air from the environment around the perimeter of the element of clothing. The maximum possible angle of the taper of the bell corresponds to the best conditions for air to enter the clothes area and allows you to increase its speed under clothing. Air from the environment through a cylindrical mesh insert penetrates into the clothes area, due to the difference in densities it is understood upward, which contributes to the removal of endogenous heat and other metabolic products. The movement of air is carried out through the air gap formed between the inner surface of the clothes and the human body using closed rings of elastic material 3 located in special pockets along the upper and lower sections of the cylindrical mesh insert. The lower base of the conical bell with the cord released has an extremely open state due to the elastic forces of the open ring. When the cord is tightened, the elastic open ring is compressed, the cross-sectional area of the base decreases, and the intensity of air ventilation under the clothes is regulated. In the extremely buried state, the lower open ring closes with the lower ring of the insert, completely blocking the access of air under the clothes.

An example of the device. A trumpet-shaped bell is a shell from the main fabric of a garment obtained by sewing side sections (lines l _to ). The bell 2 is embedded in the seam of the stitching of the cylindrical insert from the mesh 1 to the main fabric of the garment (section I). When the main fabric of the garment is tuned to the seam allowance for the sewing of the cylindrical insert from the net to the garment, a pocket is formed in which closed rings 3 are located (section I, section II). At the base of the bell 2 (section III), when adjusting the hem of the bottom, a drawstring is formed in which an elastic open ring 4 is located. A free part of the base is occupied by a cord with limiters. For ease of use in clothing, closed rings are detachable, and it is also possible to remove them from clothing elements.

The device can be integrated into clothing items such as sleeves of the elbow joints and armholes, trousers in the knee joints, belts, and a jacket in the waist.

The use of a bell in the form of a truncated cone can significantly intensify the movement of air under clothing due to the self-pulling effect due to the work of the suction force. The suction effect with the distance from the inlet weakens, therefore, to increase the efficiency of ventilation, it is recommended to install several air intake devices along the length of the clothing element. By varying the geometric parameters of the conical air inlet - the length of the generatrix of the truncated cone l _to , the cone angle α _to , the diameter of the channel, you can get different values of the flow rate. As our studies have shown, the optimal speed of air movement under clothing can be at the level of 0.49 ÷ 1 m / s. The best air entry conditions are provided by the taper angle α _k = 30 °, l _k = 0.12 m.

Using the proposed device allows you to adjust the level of convective heat transfer from the human body to the air gap. So, with a temperature difference between the body surface and the outer surface of the garment of 20 ° С, the introduction of the proposed device into the design of clothes with an air gap 30 mm thick can control the level of convective heat transfer from 33.4 W in the extremely closed state to 47.1 W in the open condition, which corresponds to an increase in heat transfer by 41%.

Information sources

1. Patent RU 2143294 C1, A62B 17/00. Device for providing ventilation of the working space. Shchedrin A.K., Bochenkov A.A., Vlasov A.A., Baskova T.N. Declared 03/05/97. Publ. 12/27/99.

2. Patent RU 2254042 C1, A41D 27/28, 13/00. Moisture-proof suit. Bokova S.V., Cherepenko A.P., Brink I.Yu. Claim 02/12/2004. Publ. 06/20/2005.

3. Patent RU 2254792 C2, A41D 27/28. Ventilated garment. Geox S.P.A. Declared January 15, 2001. Publ. 02/27/2004.

4. Copyright certificate SU 1284500, A1 А41D 13/00. Overalls for protection against a cold. P.P. Koketkin, R.F. Afanasyeva, Z.S. Chubarova, A.F. Rodionov. Claim 03/14/85. Publ. 01/23/87. Bull. Number 3.

5. Patent RU 2176897, C1 A41D 13/00, A01K 55/00. A.P. Lapin, A.V. Uvarov, M.V. Rodicheva, G.A. Uvarov. Claim 05/10/2000. Publ. 12/20/2001, Bull. No. 35 (prototype).

Claims (1)

A device for providing controlled ventilation under clothes, containing an insert of mesh material, characterized in that it contains a bell in the form of a truncated cone, having a drawstring in the lower base, in which there is an elastic open ring and a cord with stops, while a cylindrical ventilation insert is located under the bell and occupies no more than 2/3 of the length of its generatrix, rings of elastic material are located in the upper and lower parts of the insert, while the upper base of the bell is built into the seam rates for the base fabric of the garment, and at the free state the lower base of the socket extremely disclosed due to elastic force of an open ring, and when tightening the base of the cord cross-sectional area decreases, and terminates the access of air into the space in pododezhnoe maximum contracted state.

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