Energy-saving protective device for gas stove with heat flow control (embodiments)

Abstract

FIELD: power engineering.SUBSTANCE: protective energy-saving device for a gas stove with heat flow control includes a control casing (1), wherein the control casing (1) includes a base (2) and a side wall (3), in the central part of the base (2) a round opening (4) is made, the outer contour of the base (2) is made round, and the side wall (3) is located on the base (2) along its entire outer contour, wherein the upper surface of the base (2) is inclined upward from the inner part to the outer, and the inner surface of the side wall (3) is inclined inward from the lower part to the upper, wherein an annular wall (5) is located under the round opening (4), and in the base (2) several evenly distributed air inlet openings (6) are made.EFFECT: control and use of combustion energy, complete gas combustion, improved energy efficiency, increased temperature in the cookware heating zone, and securely holding the cookware in place during use.9 cl, 6 dwg

Description

AREA OF TECHNOLOGY

[0001] The present invention relates to the field of gas stove devices, in particular, to a new protective energy-saving device for a gas stove with heat flow control. BACKGROUND

[0002] Gas stoves are a common type of kitchen appliance that generates heat for cooking food through the combustion of gas. Their widespread adoption in various operating conditions is due to their ease of use, environmental friendliness, and high degree of control. Long-term observations have revealed the following operational shortcomings: when burning gas, due to the flat or rounded shape of the cookware bottom, the flame spreads outward upon contact with the surface of the bottom, heating its entire surface. When operating at high power, the flame reaches the upper sections of the side walls of the cookware, causing them to heat intensely for a short time. However, the sides of the cookware do not participate in the cooking process. After reaching a certain power level, further increasing the flame does not significantly improve heating, and most of the energy is completely lost.This not only increases gas consumption but also prevents optimal heating efficiency. At the same time, wasted energy is transferred to the surrounding area, including cookware handles, lids, and the surrounding area, creating hot spots that complicate working conditions for personnel and can cause burns. Existing windscreens for gas stoves are placed around the burner head to prevent ambient air currents from affecting the flame. However, the flame will continue to dissipate during cooking. Despite reducing the influence of external factors on the combustion process, the aforementioned shortcomings remain unresolved. Therefore, the aim of the present invention is to develop a method for regulating the heat flow of gas stoves and, based on this method, to create an energy-saving protective device capable of effectively controlling the heat flow. SUMMARY OF THE INVENTION

[0003] The present invention proposes a new energy-saving protective device for a gas stove with heat flow control. The device's main element is a control housing consisting of a base and a side wall. A circular opening is provided in the central portion of the base, allowing the burner head of the gas stove to pass through it. The combustion chamber of the gas stove is located within said housing. The outer contour of the base is circular to ensure optimal contact with standard heating utensils. The side wall is positioned on the base so that it encloses its entire outer contour, forming a combustion chamber bounded on the sides and bottom and having an opening at the top. To solve the problem of flame heat dissipation, it is necessary to retain the high-temperature outer portion of the flame within the heating zone and utilize the energy that would normally be lost, thereby improving energy efficiency.To achieve these results, the internal structure of the base and sidewall must have specific angles. The upper surface of the base slopes upward from the inner to the outer portion, while the inner surface of the sidewall slopes inward from the lower to the upper portion. Viewed from the side, the overall shape of the internal space of the control housing tapers toward the bottom and top and widens toward the middle. To prevent the housing from blocking the air supply during operation, which could result in a lack of oxygen for combustion, an annular wall is located beneath the circular opening, and several evenly spaced air inlets are provided in the base. The annular wall serves to mount the control housing onto the burner head of the gas stove. During combustion, air can continuously flow into the housing through the air inlets, providing the oxygen necessary for combustion.

[0004] Carbon dioxide is produced after gas combustion. Failure to remove it promptly can negatively impact the combustion process. To quickly remove the exhaust gas generated during combustion, including carbon dioxide, air outlets are provided on the side wall of the control housing. This ensures that the oxygen needed for combustion enters through the air inlets, and the resulting exhaust gases are systematically expelled through the air outlets, thereby creating a stable air flow and improving combustion efficiency.

[0005] During cooking, the flame intensity can be adjusted as needed. When set to maximum power, a single air outlet may not be sufficient to exhaust all the exhaust gases. Therefore, multiple outlets are provided to improve exhaust efficiency.

[0006] When operating a gas stove at high power, some of the flame and heat may escape through the air vents. If these vents are directed toward the cooking staff, the heat generated may cause discomfort. To prevent this, all air vents are located on the same side of the stove. When installing the adjustable guard, all air vents are oriented away from the user, effectively protecting them from exposure to heat.

[0007] A support frame is used to secure the burner housing more securely and improve combustion efficiency. The support frame consists of a frame base and three or more support arms, which are radially mounted to the frame base. The control housing is positioned on the support arms via a ring wall. When installing the control housing, the support frame is first placed on the burner head, then the control housing is mounted on it. This creates a gap between the bottom of the control housing and the gas stove's cooking surface. A circular opening in the center of the base serves as an air duct, increasing the contact area between the burner head and oxygen.

[0008] The optimal support frame design utilizes L-shaped support arms installed in an inverted position. One side of the support arm is vertically connected to the base of the frame, while the other is parallel to the horizontal plane and faces the center of the circular opening. Multiple support arms form multiple support points for the adjustment casing. Dish supports are mounted above the edges of the horizontal sides of the support arms, resulting in an ascending stepped structure between the dish supports and the support arms. Due to the radial arrangement of the support arms, the dish supports mounted on them are also radially arranged. Thus, multiple dish supports are arranged in a circle, the center of which coincides with the center of the circular opening. The distance from the outer end surface of the dish supports to the center of the opening is equivalent to the maximum radius of the circle.If the equivalent radius of the pan supports matches the radius of the circular opening, all supports fit precisely through this opening. Thanks to the cross-section created by the pan supports and support arms, the adjusting hood can be fixed to the support arms without shifting. The pan supports, projecting into the adjusting hood, serve as supports for the cookware during cooking.

[0009] To securely hold the control housing and prevent it from rotating during operation, grooves are provided on the annular wall located below the control housing. The number of grooves corresponds to the number of pan supports, allowing the supports to pass through the grooves from bottom to top. These grooves serve to limit the movement of the control housing.

[0010] Because the support frame lifts the control housing, a gap is created between the housing and the gas stove's cooking surface. This gap allows air to enter the circular opening, which can negatively impact the flame. To address this issue, the dimensions of the support frame and the annular wall are designed so that when the control housing is installed on the burner head, the lower edge of the annular wall is positioned below the gas openings on the burner head. As a result, air rushing toward the circular opening is blocked by the annular wall and forced to enter the circular opening strictly from the bottom up, maintaining flame stability in the combustion chamber.

[0011] To ensure a more secure fit, the bottom surface of the frame base is equipped with a soft rubber anti-slip coating designed to prevent the support frame from sliding on the surface of the gas stove during operation.

[0012] The new energy-saving protective device for gas stove with heat flow control has the following advantages: 1. It conserves and utilizes the energy released during combustion, directing most of it to cooking and heating, which improves the efficiency of gas combustion energy and reduces resource consumption under similar conditions. 2. The device's structural elements - air inlet and outlet holes, as well as the support frame - enhance air circulation, improve oxygen supply, eliminate the problem of incomplete combustion of gas fuel typical of conventional windscreens, and improve the efficiency of the combustion process. 3. By utilizing energy and preventing heat leakage, the device effectively prevents heat dissipation into the surrounding space, solving the problem of overheating pot handles, spatulas, side handles and other parts of kitchen utensils.The device prevents direct exposure to high temperatures, reducing the risk of injury and improving cooking safety. 4. The device ensures a secure hold of cookware during cooking, ensuring the bottom of the cookware adheres completely to the device and preventing it from slipping. 5. The combined use of the support frame and adjustable guard makes the device universal for various cookware, allowing one device to be used for a variety of culinary tasks. BRIEF DESCRIPTION OF DRAWINGS.

[0013] The present invention is described in detail below with reference to the accompanying drawings.

[0014] Fig. 1 - structural diagram of implementation option 1;

[0015] Fig. 2 - structural diagram of embodiment 1 (side view);

[0016] Fig. 3 - structural diagram of implementation option 2;

[0017] Fig. 4 - structural diagram of the control casing according to embodiment 3;

[0018] Fig. 5 - structural diagram of the support frame according to embodiment 3;

[0019] Fig. 6 - structural diagram of the assembled structure according to embodiment 3.

[0020] Legend: 1 - Adjusting cover; 2 - Base; 3 - Side wall; 4 - Round hole; 5 - Ring wall; 6 - Air inlet; 7 - Air outlet; 8 - Support frame; 9 - Frame base; 10 - Support lever; 11 - Dish support; 12 - Groove; 13 - Soft rubber anti-slip coating.DETAILED DESCRIPTION OF IMPLEMENTATION OPTIONS

[0021] For a better understanding of the essence of the present invention, embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

[0022] Implementation option 1

[0023] As shown in Fig. 1, the new energy-saving protective device for gas stove with heat flow control comprises a regulating casing (1) consisting of a base (2) and a side wall (3), and manufactured as a single piece by casting or stamping technology. The base (2) has the shape of a round disk with a raised peripheral part relative to the central area. The inclination angle of the base (2) relative to the horizontal plane is 15°. The side wall (3) extends upward from the periphery of the base (2) and has a general inward slope. The inclination angle of the side wall (3) relative to the horizontal plane is 72°. As shown in Fig. 2, a round hole (4) is made in the central part of the base (2). The diameter of the round hole (4) is set in accordance with the size of the burner head of the gas stove, which allows the burner head to be completely placed inside the round hole (4). An annular wall (5) is made vertically downward along the circumference of the round hole (4).On the surface of the base (2) there are several air inlet openings (6), evenly distributed over two concentric circles, the center of which coincides with the center of the round opening (4).

[0024] During operation, the control hood (1) is installed on top of the burner head so that the burner is completely within the annular wall (5). The control hood (1) is mounted to the surface of the gas stove via the annular wall (5). During cooking, the flame is directed back to the bottom of the cookware by the base (2) and side wall (3), ensuring the reuse of energy that would otherwise be dissipated, thereby increasing heating efficiency. At the same time, additional air is supplied through the air inlets (6), which provides oxygen to support combustion.

[0025] Implementation option 2

[0026] A new energy-saving protective device for a gas stove with heat flow control, based on Embodiment 1, in which the angle between the side wall (3) and the horizontal plane is increased to 78°, and the inclination angle of the base (2) relative to the horizontal plane is reduced to 11°. In addition, air outlet holes (7) are provided on the side wall (3). The number of air outlet holes (7) is five, and all of them are grouped on one section of the side wall (3), leaving a section of the side wall (3) without air inlet holes, as shown in Fig. 3.

[0027] During operation, the control hood (1) rotates so that all air outlets (7) face away from the user. Combustion gases, including carbon dioxide, are discharged through the outlets (7). A convection current is created between the air inlet (6) and outlet (7) openings, increasing oxygen supply and improving combustion. Heat from the operator-facing side of the control hood (1) is blocked by the side wall (3), preventing direct heat exposure to the user.

[0028] Implementation option 3

[0029] Based on Embodiment 2, the angle between the side wall (3) and the horizontal plane is changed to 75°, and the inclination angle of the base (2) relative to the horizontal plane is changed to 15°. A support frame (8) is additionally introduced. The support frame (8) includes a frame base (9) and support arms (10). The frame base (9) is formed in the shape of a square, and an annular anti-slip coating made of soft rubber (13) is installed on its lower surface. The support arms (10) are four L-shaped metal rods installed in an inverted position. The four support arms (10) are welded to the middles of the four sides of the frame base (9), respectively, so that one side of each support arm (10) is perpendicular to the support frame (8), and the other side faces the center of the frame base (9). Trapezoidal metal blocks are welded to the inward-facing ends of the support levers (10), which serve as supports for the dishes (11).When welding, it is necessary to ensure that the distance from the outermost point of the supports for the dishes (11) to the center of the base of the frame (9) corresponds to the radius of the circular opening (4), as shown in Fig. 5. Four grooves (12) are made on the annular wall (5). The grooves (12) are arranged crosswise and are designed to allow the supports for the dishes (11) to pass through them, as shown in Fig. 4.

[0030] First, the support frame (8) is installed on top of the burner head so that the base of the frame (9) covers the perimeter of the burner head. Next, the regulating hood (1) is installed on the support frame (8). When installing, the pot supports (11) are passed through the grooves (12) of the annular wall (5), and the grooves (12) and the pot supports (11) are used to fix the position of the regulating hood (1), as shown in Fig. 6. It is important to note that when installing the annular wall (5) and the support frame (8), it is necessary to match the height of the annular wall (5) and the support levers (10) of the support frame (8) so that after installing the regulating hood (1) on the support frame (8), the lower end surface of the annular wall (5) is located below the gas holes on the burner head. Next, adjust the position of the support frame (8) so that all air outlet openings (7) of the adjusting casing (1) are located on the side opposite the user.During cooking, cookware is placed on the cookware supports (11) of the support frame (8). During combustion, air intake openings (6) and a circular opening (4) in the lower portion of the control housing (1) serve as air intake channels, while exhaust gases are discharged through the air outlet openings (7). This solution significantly improves air convection efficiency and ensures optimal combustion. Additionally, the annular wall (5) prevents direct horizontal airflow from impacting the flame in the area of ​​the burner's gas openings during convection, thereby reducing flame instability during combustion.

[0031] Tests were conducted using the device of Embodiment 3. A water boiling test was conducted on a single gas stove. The carbon monoxide sensor was located at the location of the household gas alarm. Water was boiled using the standard method and using the device of Embodiment 3, with the tests including soup making and stir-frying. Carbon monoxide measurements were conducted to determine the efficiency of complete gas combustion, and the boiling time of water was used to determine energy consumption. Tests showed that, under identical conditions, the average boiling time using the standard method was 8 minutes 46 seconds, while using the device of Embodiment 3, it took an average of 7 minutes 24 seconds, providing an energy savings of approximately 20% compared to the standard boiling method.With the hood off, the carbon monoxide concentration recorded using the boiling method in Implementation Option 3 was 12 PPM; with the hood on, it was 0 PPM. The alarm threshold established by the national standard is 50 PPM (minimum threshold) and 500 PPM (maximum threshold). These values ​​fully comply with international regulatory requirements.

[0032] The above descriptions represent only preferred embodiments of the present invention and do not limit its scope. Those skilled in the art can make various changes and modifications. Any changes, equivalent replacements, or improvements made in accordance with the concept of the present invention are subject to legal protection within the framework of the present invention.

Claims

1. A protective energy-saving device for a gas stove with heat flow control, including a control casing (1), wherein the control casing (1) includes a base (2) and a side wall (3), in the central part of the base (2) a circular opening (4) is made, the outer contour of the base (2) is made circular, and the side wall (3) is located on the base (2) along its entire outer contour; wherein the upper surface of the base (2) is inclined upward from the inner part to the outer; and the inner surface of the side wall (3) is inclined inward from the lower part to the upper; wherein an annular wall (5) is located under the circular opening (4), and in the base (2) several evenly distributed air inlet openings (6) are made.

2. The device according to paragraph 1, in which an air outlet (7) is made in the side wall (3).

3. The device according to paragraph 2, in which several air outlet openings (7) are provided.

4. The device according to paragraph 3, in which several air outlet openings (7) are located on one side of the side wall (3).

5. A protective energy saving device for a gas stove with heat flow control, including a control casing (1), wherein the control casing (1) includes a base (2) and a side wall (3), in the central part of the base (2) a circular opening (4) is made, the outer contour of the base (2) is made circular, and the side wall (3) is located on the base (2) along its entire outer contour; wherein the upper surface of the base (2) is inclined upward from the inner part to the outer; and the inner surface of the side wall (3) is inclined inward from the lower part to the upper;wherein an annular wall (5) is located under the round opening (4), and in the base (2) several uniformly distributed air inlet openings (6) are made, additionally containing a support frame (8), including a frame base (9) and support levers (10), the number of support levers (10) is equal to three or more, wherein the support levers (10) are radially fixed on the frame base (9), and the adjusting casing (1) is designed with the possibility of a detachable connection with the support levers (10).; 6. The device according to paragraph 5, in which each of the support levers (10) has an L-shape, installed in an inverted position, wherein one side of the support lever (10) is vertically connected to the base of the frame (9), and the other side of the support lever (10) is located parallel to the horizontal plane and faces the center of the circular opening (4), wherein a support for dishes (11) is installed above the edge of the horizontal side of the support lever (10), wherein the support for dishes (11) and the support lever (10) form an ascending stepped structure, the distance from the outermost point of the support for dishes (11) to the center of the circular opening (4) corresponds to the radius of the circular opening (4), and the support for dishes (11) passes through the circular opening (4) for fixing the adjusting casing (1) on the support lever (10).

7. The device according to paragraph 6, in which a plurality of grooves (12) are made on the annular wall (5) corresponding to the number of supports for dishes (11), wherein the supports for dishes (11) are passed through these grooves (12) from below during installation.

8. The device according to paragraph 7, in which, when the control casing (1) is installed on the burner head of the gas stove through the support frame (8), the lower edge of the annular wall (5) is located below the gas openings on the burner head.

9. The device according to paragraph 8, in which an anti-slip coating made of soft rubber (13) is provided on the lower surface of the frame base (9).

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