WO2019240612A1

WO2019240612A1 - Ski with sliding base heating

Info

Publication number: WO2019240612A1
Application number: PCT/RU2018/000472
Authority: WO
Inventors: Степан Алексеевич ПЫХОВ
Original assignee: Степан Алексеевич ПЫХОВ
Priority date: 2018-06-14
Filing date: 2018-07-17
Publication date: 2019-12-19

Abstract

The utility model relates to the field of sport and popular recreational pursuits and can be used for improving the sliding of all types of cross-country skis, downhill skis and snowboards. The technical result of the solution being patented is an increase in the sliding effectiveness of a ski by the sliding base being heated depending on various weather conditions, more particularly on the snow temperature and air humidity. A ski with sliding base heating comprises a heating element which is connected to a control board which can adjust the heating temperature of the heating element depending on the snow temperature and air humidity. A metal filament, in particular made of a nickel-chromium alloy, is used as the heating element. The control board comprises a push-button switch and can adjust the heating temperature of the heating element depending on the type of snow.

Description

SKI WITH HEATING SLIDING SURFACE

The utility model relates to the field of sports and mass entertainment and can be used to improve the sliding of all types of cross-country skiing, alpine skiing and snowboarding.

The following solutions are known in the art.

So, from the description of the USSR author's certificate Ns 597378 (published 03.15.1978), skis are known that contain a wooden layer, an inner layer made of fiberglass with conductive filler in the middle part, and contacts for connecting to a power source.

For the closest analogue to the patented solution, skis are adopted that contain heating elements, a power source, a controller and temperature sensors that indicate the temperature near the interface between the ski and the snow. The controller is configured to receive signals from the skier, as well as from temperature sensors (see US patent Ns 5441305, published 08/15/1995).

The disadvantage of the closest analogue is an incomplete analysis of parameters that affect the quality of the slip.

Available analogues rely only on snow temperature, which is not enough to achieve good results, because at the same temperature there can be different indicators of air humidity and type of snow and, as a result, will need its own preparation of the ski surface.

The technical problem to which the claimed utility model is directed is to eliminate the indicated drawbacks, improve the consumer properties of the skis, eliminate the sticking of snow on the sliding surface of the skis, fully analyze the main gliding factors, no need to use weather paraffins, increase the functionality, operational characteristics of the device and expand Arsenal of hardware.

The technical result of the patented solution is to increase the efficiency of ski sliding by heating the sliding surface, regardless of various weather conditions - snow temperature and air humidity. The technical result is achieved through the use of a ski with heating a sliding surface, which contains a heating element connected to a control board configured to set the heating temperature of the heating element depending on snow temperature and air humidity.

The presence of a control board on a ski with a heated sliding surface is intended for entering weather parameters and automatically supplying the necessary amount of energy to the heating element and ensures the adaptation of the ski to various weather conditions.

Supply of the ski with a heating element connected to the control board provides the necessary heating power for the sliding surface, which improves the sliding quality of the ski.

The use of a metal thread as a heating element, in particular, of a nichrome alloy, provides high heat resistance, elasticity, low weight, which allows maintaining the necessary heating power relative to the entered values and makes the ski construction cumbersome.

In particular, the control board includes a push button switch and can be configured to set the heating temperature of the heating element depending on the type of snow, which will further increase the sliding efficiency of the ski.

Under the influence of atmospheric phenomena, snow can heat or cool. The rate of change depends on air temperature and humidity. Overmoistening of the air causes condensation on the snow surface, as a result of which latent heat is released, and there is a need for less heating of the sliding surface than would have to be based only on air temperature. On the other hand, in dry weather, sublimation of snow occurs - a process that takes away heat from a layer of snow. This requires more energy than dictated by air temperature. Therefore, for better contact of the sliding surface with the snow cover, it is necessary to take into account the values of snow temperature and air humidity. For this, control boards are installed with the ability to manually enter data. In addition, the type of snow (frostbitten abrasive snow, fresh snow, hard snow (long-falling, dirty, wet snow) affects ski glide. At low temperatures, skiing glides worse on fresh dry snow. This is because the particles of snow are coarser In fresh snow, snowflakes have sharp edges that scratch the surface of the skis (in hard snow, snowflakes do not have sharp edges - they crush and melt under the influence of external factors), the friction coefficient increases, which affects the heating force - it it will be necessary to increase it to achieve the required value of the water film, and thus, analysis of the type of snow also improves the sliding efficiency.

Next, the solution is illustrated by reference to the figure, which depicts the following.

Figure 1 - cross-sectional ski.

In FIG. 2 is a top view of a ski with a control board.

According to figure 1, the ski contains a core 3, which is responsible for the rigidity of the ski. Stiffening ribs 1 are placed on the sides of the core, and fiberglass material 4 is located on the top and bottom. The varnish coating 6 is applied to the entire outer surface of the ski, and the lower surface of the ski is a sliding layer 5, which is responsible for the sliding of the ski. The heating element 2 for heating the ski is located between the sliding surface 5 and the layer of fiberglass 4 and is made in the form of a metal (nichrome) thread.

The control board 7 (in Fig. 2) is located on the upper surface of the ski, connected to the heating element 2 and is configured to set the heating temperature of the heating element 2 depending on snow temperature and air humidity. The control board 7 is configured to connect to a power source that is located on the user's leg. In particular, the control board 7 can be configured to set the heating temperature of the heating element depending on the type of snow. The control board 7 contains an indicator of numbers 8, a switch in the form of a “Menu” button 9 for entering input parameters: snow temperature and air humidity, such as snow, and buttons 10 for decreasing and increasing parameter values. In the board menu it will be possible set the parameters necessary for a specific weather: snow temperature (from 0 ° С to -40 ° С), air humidity (from 0% to 100%), type of snow (thawed abrasive snow, fresh snow, hard snow (long-time, dirty) , wet snow). The required heating temperature is determined thanks to the programmed microcontroller, in which the weather conditions are compared with the parameters set in the control program. Depending on the set parameters, the board will automatically select (in accordance with the developed firmware) and supply the required amount of energy to the heating element. Board programming is based on the results of experiments to find the optimal heating mode for each combination of weather conditions.

The minimum heating temperature will be at a snow temperature of 0 ° С, air humidity of 100% and the ice surface of the snow, and the strongest heating temperature will be at the most negative snow temperature, minimum values of air humidity and fresh falling snow. The lower the temperature of the snow, the lower the humidity and the fresh snow, the stronger the heating should be. For example, at a temperature of 0 ° C and a relative humidity of 100% and icy snow, heating should be minimal; at a similar temperature, humidity and fresh falling snow - a little more.

The dependence of heating on weather conditions is as follows: the lower the snow temperature, the greater the heating; lowering air humidity increases heating; the heating power of the type of snow decreases in a row: frozen abrasive, fresh snow, hard snow (long-standing, dirty), wet snow, ice. However, the optimal degree of heating is selected depending on these three indicators in the complex. With a simultaneous increase in temperature, a change in humidity, and the precipitation of fresh snow, both an increase option and an option to reduce heating, depending on the combination of input parameters, can be selected.

For example, at a snow temperature of -10 ° С, air humidity of 50%, fresh snow requires more intense heating than at a snow temperature of -10 ° С, air humidity of 70% and fresh snow; even less heating is required at a snow temperature of -10 ° С, air humidity of 70% and hard snow. But if if the temperature is still lower or humidity drops, the heating force should be increased.

The dependence of the required level of heating on various weather phenomena is multifactorial, compiled on the basis of numerous experiments, and cannot be predicted mathematically.

The device operates as follows.

The control board 7 for operation receives energy from a power source (battery), which is placed on the foot or in the user's shoes. Then, using the push-button switches 9 and 10, weather conditions are entered on the control board 7, which are determined by the user for a given period of time. After that, in automatic mode, heating of the sliding surface 5 begins due to the supply of power to the heating element 2. When heated, the sliding surface is heated to the required temperature at the contact points of the ski with the snow surface. As a result, the required thickness of the water film is formed between the sliding surface of the ski and the snow, which positively affects the quality of ski sliding. The required heating temperature is determined thanks to the programmed microcontroller, in which the values of the weather conditions are compared with the parameters laid down in the control program.

The possibility of implementing the proposed utility model: using well-known technical means and technologies (power source in the form of a rechargeable battery, control board, microcontroller).

The utility model improves the consumer properties of the ski by increasing the efficiency of sliding due to the heating of the sliding surface from various weather conditions. There is also no need to apply weather paraffins to the skis, there is no “sticking” of snow to the sliding surface of the ski, which contributes to the deterioration of the sliding of the ski. The ability to set an automatic heating mode for the sliding surface allows real-time adaptation to possible changes in weather conditions.

Claims

Utility Model Formula

1. Ski heating a sliding surface, characterized in that it contains a heating element connected to the control board, configured to set the heating temperature of the heating element depending on snow temperature and air humidity.

2. The ski according to claim 1, characterized in that a metal thread is used as a heating element.

3. The ski according to claim 2, characterized in that the metal thread is made of nichrome alloy.

4. The ski according to claim 1, characterized in that the control board contains a push button switch.

5. The ski according to claim 1, characterized in that the control board is configured to set the heating temperature of the heating element depending on the type of snow.