RU1804772C - Apparatus for controlling temperature condition in cooking boiler with cover - Google Patents

Abstract

Appointment: household appliances used to signal the boiling of liquids during cooking. SUMMARY OF THE INVENTION: in the device, the signal device is made in the form of a spring clip, in the holder of which a plate of material with thermomechanical shape memory is installed, the end of the plate is pre-deformed mechanically, then it is expanded in a predetermined heating range of the liquid by lifting the lid. 4 ill.

Description

The invention relates to domestic appliances, and in particular to devices for signaling and boiling liquids during cooking, mainly cooking pots.

The purpose of the invention is to visualize the moment of boiling.

This is achieved by the fact that in the device for monitoring the temperature in cooking containers with a lid containing a signal device, the latter is a spring clip with a plate made of a material with a thermometric shape memory effect that is pre-deformed and assumes its original shape when heated to a predetermined temperature range with the possibility of contact with the cover, while the spring clip at one end has a holder for mounting on a container, and at the other a loop for placed and in it a plate, a mechanical memory of the form, which takes its original shape when heated, the spring is installed on the edge of the pan with liquid and a lid

so that the end with the shelf abuts against the outer surface of the pan, the free end of the plate is mechanically preformed and interacts with the lid (lifts the lid) in a predetermined range of heating of the liquid. ,

The implementation of the device in the manner described above also expands the functionality due to the fact that it can be installed on edges of various designs, namely, on a straight edge, bent and folded. At the same time, in all of the listed designs of the edges of the pots, the end of the bracket with the holder should be pressed firmly against the inner surface of the pan and the installed device cannot install the lid and close the pan tight enough. Providing the device with a plate of material with a thermomechanical shape memory that takes its original shape when heated and interacts (lifts) the pan lid before boiling the liquid expands the device's functionality by providing

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the possibility of signaling not only about the boiling of the liquid, but also about its heating to the required temperature by using a set of plates with thermomechanical memory assuming the original shape in different temperature ranges. And also by the fact that the sound information (rattling) is replaced by visual information - by changing the position of the lid on the pan, by lifting the lid. This allows the device to be used by people with partial or complete hearing impairment, i.e. deaf. The possibility of signaling that the set temperature has been reached by the liquid allows the use of the device not only to control the boiling of the liquid, but for other purposes in cooking, when taking care of children (warming tea, compote, milk, cereal, etc.), in medicine, and heating lotion of ec, local baths, etc. In addition, the device not only signals that the set temperature has been reached by the liquid, it also changes the heating mode, because it is known that when the lid is lifted (opened), a liquid transfusion is prevented during boiling, provided that there is no excessively intense heating.

Thus, this device provides visual control of the temperature state of liquids in cooking, actively affects the mode of heating, preventing spillage of liquids during boiling, does not require silence and can be operated by people. with hearing impairment.

Figure 1 shows the device; figure 2 - installation of the device on the straight edge of the pan; in Fig.Z - the same; for the bent edge of the pan; Fig. 4 is the same for a flat edge of the pan. .

The device (Fig. 1) consists of a spring clip 1, the end 2 of which ends with a shelf 3. The end 4 ends with a loop-shaped holder 5. A plate 6 of material with thermomechanical shape memory is installed in the holder. The end of the plate, before using the signal device, is deformed by the radius R, then, during heating, it is expanded to its initial state in a predetermined temperature range.

The device is mounted on the edge of the pan 7 so that the end with the shelf abuts against the outer surface of the pan, for example, having a straight edge 8, Fig. 2, a bent edge 9, Fig. 3, or a collar 10, Fig. 4.

Spring clip 1 is made by stamping stainless (food grade)

steels to provide corrosion resistance during the boiling process of various liquids. Such steel has a rigidity sufficient to provide spring

the properties of the bracket required when it is installed on the edges of the pots 7 of various designs 8, 9, 10. The strap 6 is made of a material with a thermomechanical shape memory having the ability

after mechanical deformation, restore its original shape during heating. For signaling boiling liquids, the temperature range of the restoration of the form of appointment within

t.z. (80-90) ° C, for heating liquids (cooked food) within the limits of (45-55) ° C. The most suitable for the manufacture of plank 6 at present is an alloy of nickel with titanium, nitinol containing 55% nickel and 45% titanium (3). It should be noted that nitinol has a high (necessary) corrosion resistance and biological inertness, i.e. harmless in the process

cooking, the thickness and width of the plate is selected within the limits ensuring its deformation by the fingers of the hand, without the use of any tools. The length of the strap is chosen so that

during the process, it is dissolved in the pan, the lid is raised to a height h sufficient for visual inspection, for example, to a height h (15-20) mm.

The device operates as follows,

The plate 6 is deformed, prior to installation in the bracket, with a radius R providing the dimension H (Fig. 1), which is necessary for the cover of the existing pan to be easily installed. This value varies between H (7-10) mm. Place the band in the bracket. Prepared (cocked) device is installed on the edge of the pan with liquid (Fig.2-4). Close the pan with a lid and place it on the stove. Depending on the volume of liquid, the power of the flame (heater) is regulated. In a given temperature range, the plate b1., Under the action of liquid vapor, straightens and raises the cover to a height h. This phenomenon serves as a signal for controlling the boiling of the contents of the pan. If the flame power is optimally selected, then raising the cover by (15-20) mm is sufficient to

preventing boiling liquid from escaping from the pan. After removing the hot pan from the stove, the device can be removed from the edge of the pan by grabbing onto the plate 6 or at the outer end 2 of the bracket

spring loaded, refrigerated and reused.

The device operates in the temperature range of 1 order (75-90) ° С. The number of nitenol actuation cycles is at least 10 cycles. When using the device 10 times a day (which is unlikely), it will serve for a time T equal to:

T 105: 10 104 days: 365 30 years That is, the device has a sufficiently long service life, therefore, it has high consumer efficiency and profitability.

Claims (1)

The claims Device for temperature control in cooking containers with a lid, 0 comprising a signal device, characterized in that, for the purpose of visualizing the boiling moment, the signal device is a spring clip with a plate made of a material with a thermomechanical effect of shape memory pre-deformed and taking its original shape when heated in a predetermined temperature range, providing contact with the lid, the spring clip at one end having a holder for attaching to the container, and at the other a loop to place the plate in it.