RU213541U1 - KETTLE - Google Patents

Abstract

The utility model relates to small household appliances for the kitchen, in particular to kettles with the possibility of adding water without opening the lid. A kettle, characterized in that its lid has a through hole tightly closed by a damper located on the inside of the lid and fixed with the possibility of displacement downwards under the action of water pressure; and also in that the damper is provided with a ball-shaped counterweight which returns the damper to the closed position after the action of the water has ceased. In this case, the counterweight is made of a denser material than the rest of the damper. The technical result of the utility model is to increase the reliable fixation of the damper, which, in turn, ensures the tightness of the kettle lid during water heating, as well as when the kettle body is moved and deviated from the working vertical position. 6 w.p. f-ly, 3 ill.

Description

Technical field

The utility model relates to small household appliances for the kitchen and can be used in the light industry in the production of kettles, including the production of electric kettles.

State of the art

There are a number of technical solutions aimed at developing a kettle, the design of which allows topping up water without opening the lid.

So from the document CN 206462819 U, a teapot is known, in the lid of which there is a hole closed by a damper. The damper has two fixed positions - open and closed. The kettle is equipped with a temperature sensor that moves the damper from the closed position to the open position when the water temperature reaches a certain value. The damper can also be moved manually. The mechanism for moving the damper has a complex structure, including gears and springs.

The disadvantage of the known solution is the complexity of the mechanism for moving the damper.

The closest analogue of the proposed technical solution is the kettle described in the document CN 202022585212. The lid of this kettle has a damper that can be shifted down under the action of water pressure, topped up, for example, from the tap. The damper is rigidly fixed in a groove made in the kettle lid. Displacement under the action of water pressure and return to its original position is carried out due to the elasticity of the damper material itself.

The disadvantages of this technical solution include the unreliability and rapid wear of the damper, as well as the need to use an elastic material for its manufacture.

Unlike the closest analogue, the proposed solution allows the damper to be made of any, not necessarily elastic, material used in the food industry. In particular, the damper can be made of food-grade plastic, food-grade rubber, or glass. In addition, the proposed mechanism for returning the damper to the closed position is more reliable, which increases the life of the kettle.

Thus, the object of the present utility model is to provide a kettle that allows topping up water without opening the lid, and is characterized by a simple structure and high reliability of the topping mechanism, which can be made from a wide range of materials.

The technical result of the claimed utility model is the development of a damper, the parameters of which ensure reliable sealing of the lid during water heating.

Utility Model Disclosure

The set goal, the technical result required and obtained by using the utility model are achieved by the fact that the kettle has a lid in which a through hole is made, and a movable damper is fixed on the inside of the kettle lid, equipped with a ball-shaped counterweight and made of a denser material than the rest of the damper.

In this case, the damper is fixed on the inside of the kettle lid by means of a shaft.

In addition, the hole in the cover is located in the center.

In turn, the walls of the cover are made conical, tapering towards the damper.

In this case, the damper plate closing the hole in the lid is made arcuately curved in the direction of the outer side of the lid.

In addition, tight contact between the lid and the damper is ensured by means of an o-ring placed in a recess on the inside of the kettle lid.

Also, the part of the shutter that closes the hole in the cover is made of plastic, rubber or glass.

Brief description of the drawings

The essence of the utility model is illustrated by drawings.

The following designations are used in the drawings:

1 - kettle body;

2 - cover;

3 - through hole for topping up water;

4 - damper closing hole 3;

5 - connecting part of the damper;

6 - counterweight;

7 - ears for fastening the damper;

8 - shaft.

In FIG. 1 shows an example of the general view of the claimed kettle.

In FIG. 2 shows a variant of the lid with a damper for topping up water.

In FIG. 3 shows a variant of the mechanism for attaching the damper to the lid of the kettle. This drawing shows only part of the damper without counterweight 6.

Implementation of the utility model

Currently, electric kettles with a lid that opens by pressing a button or by applying direct muscular effort on the part of the user are widely used. Adding water to a kettle with a lid of this design is not the most practical solution - as it takes a long time to open the lid, it makes it difficult to top up with one hand, which is necessary when working in the kitchen. This complicates the use of the kettle by people with disabilities and the elderly. In addition, an open lid can also create additional inconvenience when adding water, touching the tap or spontaneously closing when the kettle is tilted.

The proposed teapot is characterized by the presence of a lid, the design of which allows topping up water without opening it. This effect is achieved by making a through hole 3 in the cover 2 and including a damper 4 in the design, located directly under the specified hole 3 and in the closed position close to its lower edge. The damper 4 can be attached to the kettle lid using a rotary mechanism. When implementing this mounting option, a through hole is made in the connecting part 5 to accommodate the shaft 8, as shown in Fig. 2 and FIG. 3, and on the inside of the cover 2, ears 7 are made for attaching the shaft 8.

The opening and return of the damper 4 to its original, closed position is carried out according to the principle of a lever: in the process of topping up, water exerts pressure on the damper 4, thereby outweighing the load 6 and opening the damper 4. After the cessation of the action of water, the moment of force from the side of the load 6 returns the damper 4 to the closed position.

The damper 4 can be made of any material used for the manufacture of elements of kitchen appliances in contact with food. In particular, it can be made of food-grade rubber, plastic or glass.

Counterweight 6 can be made of any material used in the food industry, the density of which exceeds the density of the rest of the damper 4. The size of the counterweight 6 is selected in accordance with the material, weight or density of the damper 4: the heavier the dampers, the heavier the required counterweight. The counterweight 6 has the shape of a ball. This shape allows you to compactly place the counterweight under the lid, while maintaining the maximum volume for water. Also, the shape of the ball creates less resistance when interacting with steam or air, due to the streamlined shape, which reduces the counterweight counterweight force, which is important when water boils, when the counterweight is acted upon by a buoyant force from steam flows. The compact counterweight does not occupy a large volume inside the kettle and does not touch the water line, which makes its use hygienic, and the kettle itself is more durable, because due to the lack of contact with water, including heated to high temperatures of 80-100 ° C, the counterweight wears out slower.

The tightness of the lid, ensured by tight contact between the shutter and the bottom of the through hole, increases the energy efficiency of the kettle and also makes it safer to use. Tight contact between damper and bonnet is ensured by using a counterweight of precisely calculated mass. It has been established that in order to ensure tight fixation of the damper to the lid of the kettle, when calculating the parameters of the counterweight, it is necessary to take into account the damper fixation coefficient, determined by the formula:

where k is the damper fixation factor, where k∈[0.3; 0.85);

R - counterweight radius;

L ₁ - distance from the counterweight to the fulcrum;

L ₂ - distance from the center of the damper to the fulcrum;

V _in - the volume of water above the damper;

V _pl - damper volume;

ρ _mp - the density of the material from which the counterweight is made;

ρ _in - water density;

ρ _mpl - the density of the material from which the damper is made.

Also, to understand the essence of the claimed solution in Fig. 2b shows the curvature radius R ₂ of the damper, which in the proposed version is equal to 6R.

The optimal values of the coefficient k were obtained during testing of the layout with dampers made of different materials. It was experimentally found that for dampers with k in the range from 0.3 to 0.85, the sealing of the lid during operation of the kettle is more reliable and at the same time does not require too much water pressure when topping up. When using a damper with coefficient k values greater than 0.85, damper 4 oscillates under the action of rising steam flows and the general vibration of the kettle body when water boils and does not provide the required sealing of the lid. Valves with k values less than 0.3 require a strong water pressure when topping up, since considerable pressure is required to open them, a large amount of water can accumulate above such a valve after topping up, which reduces the convenience of using the kettle.

It should be understood that in this application we are talking only about proportionality, and not about equality, that is, to simplify the understanding of the calculation of damper parameters, some of the constants in the formula have been omitted. If the water head is fixed, the coefficient is determined only by the weight of the damper and counterweight, the materials and dimensions of which are selected so that the coefficient falls within the required acceptable range.

Downsizing of the counterweight when using a damper made of heavy materials is possible by choosing a material with a higher density.

Thus, as follows from all of the above, from the standpoint of the claimed technical result and the problem to be solved, it is essential

1) making a through hole in the lid of the kettle, which is tightly closed by a movable damper,

2) the damper and the counterweight have different densities, and the counterweight is made of a material that is denser than the rest of the damper,

3) the counterweight has the shape of a ball to ensure an increase in the reliable fixation of the damper in the kettle lid, which in turn ensures the tightness of the kettle lid during water heating, as well as when the kettle body moves and deviates from the working vertical position.

For additional sealing of the contact between the closed damper 4 and the lid of the kettle 2, standard sealing elements can be used. In particular, it can be a sealing ring placed on the inside of the lid in a special recess (not shown in the drawings).

The shutter 4, in turn, can be made convex. In this case, the weight of the water is distributed in such a way that the greatest pressure falls on the edges of the damper plate 4, and the damper opens faster. Also, to increase the water pressure, the hole in the lid can be made tapering towards the bottom.

As follows from the description of possible implementations of the claimed utility model, the proposed kettle with the possibility of topping up without opening the lid ensures the achievement of the claimed technical result, namely the development of a damper, the parameters of which ensure reliable sealing of the lid during water heating. This design of the damper leads to an increase in the service life of the kettle.

Considering the novelty of the set of essential features, the technical solution of the task, the materiality of all general and particular features of the utility model, proven in the section "Prior Art" and "Disclosure of the utility model"; the technical feasibility and industrial applicability of the proposed device proved in the section "Implementation and industrial implementation of the utility model"; solution of the tasks and confident achievement of the required technical result in the implementation and use of the utility model, in our opinion, the claimed device satisfies all the requirements for patentability for utility models.

The analysis also shows that all general and particular features of the utility model are essential, since each of them is necessary, and together they are not only sufficient to achieve the purpose of the utility model, but also allow it to be implemented industrially.

Claims (7)

1. A kettle, characterized in that a through hole is made in its lid, and a movable damper is fixed on the inside of the kettle lid, equipped with a ball-shaped counterweight and made of a denser material than the rest of the damper. 2. Kettle according to claim 1, characterized in that the shutter is fixed on the inside of the kettle lid with a shaft. 3. Kettle according to claim 1, characterized in that the hole in the lid is located in the center. 4. Kettle according to claim 1, characterized in that the walls of the lid are made conical, tapering towards the damper. 5. Kettle according to claim 1, characterized in that the part of the damper closing the hole in the lid is made arcuately curved in the direction of the outer side of the lid. 6. Kettle according to claim 1, characterized in that tight contact between the lid and the damper is ensured by means of an o-ring placed in a recess on the inside of the kettle lid. 7. Kettle according to claim 1, characterized in that the part of the damper that closes the hole in the lid is made of plastic, rubber or glass.

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