A new type of heat flow control energy-saving protection device for gas stove

Abstract

The application discloses a novel heat flow control energy-saving protection device for a gas stove, and belongs to the field of gas stove devices. The device comprises a support and a control cover which is detachably installed on the support. The control cover comprises a bottom disc and a side wall, and the bottom disc is provided with a circular hole in the center and has a circular outer contour. The upper surface of the bottom disc is inclined upward from inside to outside, and the inner side surface of the side wall is inclined inward from bottom to top, so that the internal space of the control cover has a shape of being narrow at the bottom, wide in the middle and narrow at the top. A ring wall extending downward is arranged below the circular hole. When the control cover is installed on a burner of the gas stove through the support, the lower end of the ring wall is lower than the gas outlet hole of the burner, so as to block the lateral airflow from directly blowing to the flame root. Through the height difference design of the ring wall and the support, the application effectively prevents the lateral airflow from interfering with the combustion, realizes the fire gathering and energy saving in combination with the specific inclination angles of the bottom disc and the side wall, can improve the gas combustion efficiency, reduces the energy consumption, and improves the safety of the cooking process.

Description

Technical Field

[0001] This invention is a divisional application of patent number 202411799050.0, filed on December 9, 2024, belonging to the field of gas stove device technology, and particularly relating to a novel heat flow control energy-saving protection device for gas stoves. Background Technology

[0002] Gas stoves, as common kitchen appliances, provide heat for cooking by burning gas. Due to their convenience, environmental friendliness, and ease of operation, they are widely used in various scenarios. However, after years of use, the following problems have been observed: During combustion, because the bottom of the pot is flat or round, the flame spreads outwards after contacting the bottom, heating the entire bottom. But when the flame is large, the spreading flame rises to the upper part of the pot wall, quickly raising its temperature. However, the pot wall does not participate in heating the food during cooking. Once the heat reaches a certain level, further upward heating becomes less effective, resulting in significant energy waste. This increases gas costs and fails to achieve optimal heating efficiency. Furthermore, this wasted energy radiates to surrounding areas such as the handle, lid, and surrounding space, causing these parts and areas to reach high temperatures, making cooking difficult and potentially leading to burns. Existing gas stove wind shields only cover the edge of the burner to prevent surrounding airflow from affecting the flame. The flame still spreads during cooking, and while they reduce external influences, the aforementioned problems persist. Therefore, this invention researches heat flow control methods for gas stoves and develops an energy-saving protective device that can effectively control heat flow. Summary of the Invention

[0003] This invention provides a novel heat flow control and energy-saving protection device for gas stoves. The main body is a control cover, which consists of a base and side walls. A circular hole is opened in the center of the base, allowing the burner of the gas stove to pass through and enclosing the combustion part of the gas stove. The outer contour of the base is circular to accommodate the shape of commonly used heating containers. The side walls are set on the base, surrounding the outer circumference of the base, forming a combustion space with an opening at the top. To solve the problem of heat diffusion during combustion, it is necessary to control the high-temperature outer flame to the area that needs to be heated, and to recover and reuse the energy that would otherwise diffuse, thereby improving energy utilization. To achieve this effect, the interior of the base and side walls has special angles. The upper surface of the base slopes upward from the inside out, and the inner surface of the side walls slopes inward from the bottom up. From the side, the overall shape of the internal space of the control cover is narrow at the bottom, wide in the middle, and narrow at the top. To prevent the control cover from blocking air during operation and causing insufficient oxygen for combustion, a ring wall is set below the circular hole, and multiple evenly distributed air inlets are set on the chassis. The control cover is placed on the burner of the gas stove using the ring wall. During combustion, air can continuously enter the control cover from the air inlets to supplement the oxygen required for combustion.

[0004] Carbon dioxide gas is produced after the gas is burned. If it is not discharged in time, it will affect the combustion effect. In order to discharge the carbon dioxide and other exhaust gases produced by combustion in a timely manner, an exhaust port is set on the side wall of the control hood. In this way, the oxygen required for combustion is replenished from the air inlet, and the exhaust gas produced is discharged in an orderly manner from the exhaust port, forming an airflow channel and improving the combustion efficiency of the gas.

[0005] When cooking, different heat levels are adjusted as needed. When the heat is set to the maximum, one vent is not enough to meet the exhaust demand. Therefore, the number of vents is set to multiple to improve exhaust efficiency.

[0006] When a gas stove has a high flame, some of the flame and heat will overflow from the gas outlet. If the gas outlet is directly facing the cook, the heat generated will affect the human body. Therefore, all gas outlets should be placed on the same side of the side wall. When installing the control cover, all gas outlets should be placed on the side away from where the operator stands to avoid the overflowing energy affecting the cook.

[0007] To ensure a more stable installation of the control cover and improve gas combustion efficiency, a bracket is installed. The bracket consists of a base and at least three support arms, which are radially fixed to the base. The control cover can be placed on the support arms via the ring wall. During installation, the bracket is first placed on the burner head, and then the control cover is placed on the bracket. This creates a gap between the bottom of the control cover and the cooktop surface, and the circular hole in the center of the base becomes an air passage, increasing the contact area between the burner head and oxygen.

[0008] The optimal shape for the support arm is an inverted L-shape, with one side vertically connected to the base and the other side parallel to the horizontal plane and facing the center of the circular opening. Multiple arms form multiple support points to provide a surface for the control cover. A pot rack is positioned above the horizontal end of the arm, forming an upward stepped structure. Since the arms are arranged radially, the pot racks on them are also radially arranged, effectively placing them on a circle centered on the circular opening. The distance from the outer end of the pot rack to the center of the opening corresponds to the maximum radius of this circle. By aligning the equivalent radius of the pot rack with the radius of the circular opening, the pot racks can pass precisely through the opening. The cross-section formed by the pot rack and the arm secures the control cover to the arm without displacement. The pot rack extending into the control cover can then be used to support the cookware during cooking.

[0009] To better secure the control cover and prevent it from rotating during use, slots are provided on the ring wall below the control cover. There are multiple slots, each corresponding to a pot holder, allowing the pot holder to pass through the slots from below. These slots limit the displacement of the control cover.

[0010] Because the bracket raises the position of the control cover, there is a certain gap between the control cover and the burner surface of the gas stove. Air can enter the round hole through the gap, and the air flow will interfere with the flame. To avoid the above problems, the dimensions of the bracket and the ring wall are set to ensure that when the control cover is installed on the burner head, the lower end of the ring wall is lower than the gas outlet on the burner head. In this way, when air rushes into the round hole, the air that rushes directly to the gas outlet will be blocked by the ring wall. The blocked air will only enter the round hole from bottom to top, avoiding interference with the flame in the combustion chamber.

[0011] To provide better stability, the bottom of the base is equipped with non-slip soft rubber to prevent the bracket from sliding on the gas stove surface during use.

[0012] The novel heat flow control and energy-saving protection device for gas stoves provided by this invention has the following beneficial effects:

[0013] 1. The energy generated by combustion is recovered and reused, ensuring that most of the energy can be used for cooking and heating, thereby improving the energy utilization rate of gas combustion and reducing resource consumption under the same conditions.

[0014] 2. The air outlet, air inlet, and support on the device can improve air circulation and increase oxygen supply, solving the problem of incomplete combustion of gas during the use of ordinary windproof covers and increasing the combustion efficiency of gas.

[0015] 3. By recycling energy and preventing heat loss, it effectively blocks heat from being transferred to the surrounding environment, solving the problem of hot hands on the handle, spatula, pot ears and pot body, etc., and preventing high temperature from directly hitting the operator, reducing the risk of physical harm to the human body and improving cooking safety.

[0016] 4. It can secure the cookware during cooking, ensuring that the bottom of the cookware is fully supported on the device, preventing the cookware from sliding during cooking.

[0017] 5. The combination of the support and control cover can accommodate different types of cookware, allowing you to complete different cooking tasks using the same set of equipment. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1; Figure 2 This is a side view of the structure of Example 1; Figure 3 This is a schematic diagram of the structure of Example 2; Figure 4 This is a schematic diagram of the control cover structure in Embodiment 3; Figure 5 This is a schematic diagram of the support structure in Example 3; Figure 6 This is a structural diagram of the combined state in Example 3; As shown in the figure: 1-Control cover; 2-Chassis; 3-Side wall; 4-Round hole; 5-Ring wall; 6-Air inlet; 7-Air outlet; 8-Bracket; 9-Base frame; 10-Support arm; 11-Pot rack; 12-Slot; 13-Anti-slip soft rubber. Detailed Implementation

[0020] To further illustrate the concept of the present invention, the specific embodiments of the present invention will be further described below with reference to the accompanying drawings: Example 1 A novel heat flow control and energy-saving protection device for gas stoves, such as Figure 1As shown, the control cover 1 is composed of a chassis 2 and side walls 3, and is integrally formed by casting or stamping. The chassis 2 is a disc-shaped structure with the perimeter higher than the center, and the chassis 2 is tilted at an angle of 15° relative to the horizontal plane. The side walls 3 extend upward from the perimeter of the chassis 2, and the side walls 3 are tilted inward, with an angle of 72° between the side walls 3 and the horizontal plane. Figure 2 As shown, a circular hole 4 is opened in the middle of the base 2. The diameter of the circular hole 4 is set according to the size of the gas stove burner so that the burner can be completely fitted into the circular hole 4. Then, a ring wall 5 is provided around the circular hole 4 downwards. Multiple air inlets 6 are opened on the surface of the base 2. The air inlets 6 are evenly distributed along two concentric rings with the center of the circular hole 4 as the center.

[0021] When in use, the control cover 1 is placed over the burner head, and the burner head is placed in the middle of the ring wall 5. The control cover 1 is placed on the gas stove surface through the ring wall 5. During cooking, the flame is guided back to the bottom of the pot by the base plate 2 and the side wall 3, and the energy that was originally dissipated is reused for heating, which improves heating efficiency. At the same time, air is supplied from the air inlet 6 to provide the oxygen required for combustion.

[0022] Example 2 A novel heat flow control and energy-saving protection device for gas stoves, based on Embodiment 1, adjusts the angle between the side wall 3 and the horizontal plane to 78°, and the angle between the base 2 and the horizontal plane to 11°. Five gas outlets 7 are opened on the side wall 3, positioned to ensure that the gas outlets 7 are located on the same side of the side wall 3, resulting in a section of the side wall 3 without gas outlets 7. Figure 3 As shown.

[0023] During use, the control hood 1 is rotated so that the exhaust port 7 is completely away from the side where the operator is working. The carbon dioxide and other gases produced by combustion can be discharged from the exhaust port 7, forming convection between the exhaust port 7 and the air inlet 6, increasing the oxygen supply and improving the combustion effect. At the same time, the heat from the side of the control hood 1 facing the operator is blocked by the side wall 3, preventing heat from rushing towards the operator.

[0024] Example 3 Based on Embodiment 2, the angle between the side wall 3 and the horizontal plane is adjusted to 75°, and the angle between the base 2 and the horizontal plane is adjusted to 15°. A support 8 is added, consisting of a base frame 9 and support arms 10. The base frame 9 is a square frame with a ring of anti-slip soft rubber 13 adhered to its bottom surface. The support arms 10 are four inverted L-shaped metal rods, welded to the midpoints of the four sides of the base frame 9, so that one side of each support arm 10 is perpendicular to the support 8, and the other side faces the center of the base frame 9. Then, a trapezoidal metal block is welded to the inward-facing end of each support arm 10 as a pot rack 11. During welding, the distance between the outermost end of the pot rack 11 and the center of the base frame 9 is consistent with the radius of the circular hole 4. Figure 5As shown. Then, four slots 12 are cut into the ring wall 5, arranged in a cross shape. The slots 12 allow the pot rack 11 to pass through perfectly, as shown. Figure 4 As shown.

[0025] First, lower the bracket 8 over the burner head, so that the base frame 9 frames the burner head inside. Then, install the control cover 1 on the bracket 8, ensuring that the pot rack 11 passes through the slot 12 in the ring wall 5 during installation. Use the slot 12 and the pot rack 11 to fix the position of the control cover 1. Figure 6 As shown. It is important to note that when setting up the annular wall 5 and the support 8, the height of the annular wall 5 and the support arm 10 of the support 8 should be adjusted so that when the control cover 1 is installed on the support 8, the lower end of the annular wall 5 is lower than the gas outlet on the burner head. Then adjust the angle of the support 8 so that all the gas outlets 7 on the control cover 1 are facing away from the side where the operator is working. When cooking, place the pot on the pot wall of the support 8. During combustion, the air intake channels are the air inlet 6 and the round hole 4 below the control cover 1, and then the exhaust gas is discharged from the gas outlet 7, greatly improving the air convection efficiency and achieving the best combustion effect. The annular wall 5 also prevents air from blowing directly horizontally towards the flame on the burner head's gas outlet during air convection, reducing interference to the flame during combustion.

[0026] The device from Example 3 was tested. Water boiling was performed on the same gas stove. A carbon monoxide detector was installed at the location of the household gas alarm device. Water was boiled using both normal methods and the device from Example 3, including boiling soup and stir-frying. Carbon monoxide levels were used to determine the complete combustion efficiency of the gas, and the boiling time was used to determine the energy consumption. The experiment showed that, under the same conditions, the average time to boil water using the normal method was 8 minutes and 46 seconds, while the average time using the device from Example 3 was 7 minutes and 24 seconds, resulting in approximately 20% energy savings compared to the normal method. Without the range hood on, the carbon monoxide concentration measured using the method from Example 3 was 12 PPM; with the range hood on, it was 0 PPM. The national standard alarm lower limit is 50 PPM, and the upper limit is 500 PPM, meaning this detection value fully meets international standards.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made using the present invention should be included within the protection scope of the present invention.

Claims

1. A novel heat flow control and energy-saving protection device for gas stoves, characterized in that, include: A bracket (8) is used to mount the gas stove on the burner head; The control cover (1) is detachably mounted on the bracket (8). The control cover (1) includes a chassis (2) and a side wall (3). The chassis (2) has a circular hole (4) in the center for accommodating the burner head. The outer contour of the chassis (2) is circular. The side wall (3) is arranged around the outer circumference of the chassis (2). The upper surface of the chassis (2) is inclined upward from the inside to the outside. The inner side of the side wall (3) is inclined inward from the bottom to the top, so that the internal space of the control cover (1) is narrow at the bottom, wide in the middle, and narrow at the top in the longitudinal section. Below the circular hole (4) is a ring wall (5) extending downwards; When the control cover (1) is installed on the burner of the gas stove via the bracket (8), the lower end of the ring wall (5) is lower than the gas outlet on the burner to prevent air from blowing directly horizontally onto the flame on the gas outlet of the burner.

2. The novel heat flow control and energy-saving protection device for gas stoves according to claim 1, characterized in that, The upper surface of the chassis (2) has an angle of 15° with the horizontal plane, and the side wall (3) has an angle of 72° or 75° with the horizontal plane.

3. The novel heat flow control and energy-saving protection device for gas stoves according to claim 1, characterized in that, The bracket (8) includes a base frame (9) and multiple support arms (10), which are arranged radially on the base frame (9), and the control cover (1) is detachably connected to the support arms (10).

4. The novel heat flow control and energy-saving protection device for gas stoves according to claim 3, characterized in that, The support arm (10) is inverted L-shaped, including a vertical side that is vertically connected to the base frame (9) and a horizontal side that is parallel to the horizontal plane and faces the center of the circular hole (4); a pot rack (11) is provided above the end of the horizontal side of the support arm (10), the pot rack (11) and the support arm (10) form an upward step shape, and the distance from the outermost end of the pot rack (11) to the center of the circular hole (4) is the same as the radius of the circular hole (4), so that the pot rack (11) can pass through the circular hole (4) and fix the control cover (1) on the support arm (10).

5. The novel heat flow control and energy-saving protection device for gas stoves according to claim 4, characterized in that, The ring wall (5) is provided with a plurality of slots (12) corresponding one-to-one with the pot rack (11). The pot rack (11) passes through the slots (12) below to restrict the control cover (1) from rotating relative to the support (8).

6. The novel heat flow control and energy-saving protection device for gas stoves according to claim 1, characterized in that, The chassis (2) is provided with a plurality of evenly distributed air inlets (6), and the sidewall (3) is provided with a plurality of air outlets (7).

7. The novel heat flow control and energy-saving protection device for gas stoves according to claim 6, characterized in that, All of the aforementioned air outlets (7) are located on the same side of the sidewall (3).

8. The novel heat flow control and energy-saving protection device for gas stoves according to claim 3, characterized in that, The bottom surface of the base frame (9) is provided with anti-slip soft rubber (13).

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