A kind of energy-gathering ring and gas stove burner system

Abstract

The present invention discloses an energy-gathering ring, which includes an energy-gathering ring body. There is a horn-shaped cavity with a larger upper part and a smaller lower part in the center of the energy-gathering ring. The cavity penetrates the energy-gathering ring body up and down. The surface of the cavity is a rotating surface. The generatrix of the rotating surface includes a first line segment, a second line segment and a third line segment from bottom to top. These line segments form a special curved curve. The energy-gathering ring further includes an air inlet and a notch. The present invention also discloses a gas stove burner system, which includes a burner and the energy-gathering ring. The minimum diameter difference between the rotating surface of the energy-gathering ring and the outer peripheral wall of the burner is 5 mm, and the tolerance value is ±0.5 mm. The gas stove burner system is also provided with a water pan and a stove rack. The vertical distance between the upper end surface of the stove ear of the stove rack and the upper end surface of the energy-gathering ring body is 3 mm, and the tolerance value is ±2 mm. The present invention is beneficial to improving the temperature uniformity in the combustion space, enhancing the heat exchange efficiency, and saving energy and protecting the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, and particularly relates to a heat - concentrating ring, a gas stove and a combustion system. Background Art

[0002] Household gas cookers include a gas stove burner system and a gas supply system for supplying gas to the gas stove burner system. The gas stove burner system generally includes a burner. Gas flow is introduced below the burner. A water pan is arranged below the burner, and a stove rack is arranged on the water pan. The stove rack has stove lugs for supporting cooking utensils. During operation, the burner receives gas and ignites it to heat the cooking utensils placed on the stove rack.

[0003] However, the space between the bottom surface of the cooking utensil and the burner is large due to being suspended by the stove rack, resulting in a large amount of heat loss from the flame and wasting a lot of gas. Therefore, there is currently a method of adding a heat - concentrating ring to the gas stove burner to try to improve the energy efficiency of the cooker. However, the current general heat - concentrating ring only exists in the form of a simple baffle, failing to achieve a good heat - concentrating effect and not optimizing and utilizing the combustion flue gas emissions well. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat - concentrating ring and a gas stove burner system to solve one or more technical problems existing in the prior art, and at least provide a beneficial alternative or create conditions.

[0005] The technical solutions adopted to solve the above - mentioned technical problems are as follows:

[0006] First of all, a heat - concentrating ring is provided, including:

[0007] A heat - concentrating ring main body, which has a trumpet - shaped cavity with a larger upper part and a smaller lower part in the center. The cavity penetrates the heat - concentrating ring main body up and down. The surface of the cavity is a rotating surface, and the generatrix of the rotating surface includes from bottom to top:

[0008] A first line segment, which is convex and bent obliquely downward as a whole, so that the whole of the first line segment is located obliquely below the connection line of the two end points of the first line segment, or the first line segment is a straight line segment extending downward;

[0009] A second line segment, which is convex and bent obliquely upward as a whole, so that the whole of the second line segment is located obliquely above the connection line of the two end points of the second line segment;

[0010] A third line segment, which is concave and bent obliquely downward as a whole, so that the whole of the third line segment is located obliquely below the connection line of the two end points of the third line segment; the first line segment, the second line segment and the third line segment are connected in sequence and transition smoothly;

[0011] An air inlet, which is located below the heat - concentrating ring main body;

[0012] notches, which are provided on the main body of the energy-gathering ring, are multiple in number and are arranged in a circle around the central axis.

[0013] When the energy-gathering ring is matched with external burners, water trays, etc., external air enters from the air inlet to provide combustion-supporting air for the flame supplied by the burner located inside the energy-gathering ring. The rotating surface formed by the specially designed generatrix presents a special Venturi structure as a whole, making the gas stove burner system formed by the energy-gathering ring have higher heat exchange efficiency and higher energy efficiency. The specific working process will be described below when describing the gas stove burner system.

[0014] As a further improvement of the above technical solution, the second line segment includes a lower curve segment and an upper curve segment connected end to end from bottom to top, and the radius of curvature of the upper curve segment is greater than that of the lower curve segment. Here, the curvature of each bending position of the generatrix is further optimized, so that the space enveloped by the rotating surface of the energy-gathering ring can better play the role of secondary air entrainment, retaining high-temperature flue gas, and improving heat exchange efficiency.

[0015] As a further improvement of the above technical solution, the minimum diameter of the rotating surface of the main body of the energy-gathering ring is with a tolerance value of ±0.5 mm, and the is one of the values of 75 mm, 110 mm, 130 mm, 140 mm, and 145 mm. Since the general specification of the outer peripheral diameter of the burner on the market at present is Therefore, the above values are preferably selected in this improvement scheme, so that after the energy-gathering ring is matched with the burner, the gap formed between the rotating surface of the energy-gathering ring and the outer peripheral wall of the burner can reach about 5 mm. Experiments have proved that such a size of gap has a better air drainage effect and can also maximize the maintenance of the heat inside the energy-gathering ring without loss.

[0016] As a further improvement of the above technical solution, at least two supporting feet are provided below the main body of the energy-gathering ring, and the air inlet is formed between two adjacent supporting feet. The separated supporting feet can support the main body of the energy-gathering ring, so that the lower edge of the main body of the energy-gathering ring naturally has an opening for external air to enter the space surrounded by the energy-gathering ring, that is, the so-called air inlet. Of course, at this time, the air inlet is in a semi-open form, that is, the air inlet is surrounded by two adjacent supporting feet and the lower edge of the main body of the energy-gathering ring, and the lower edge of the air inlet is open. However, it does not exclude the setting of a fully enclosed air inlet around the circumference, such as the form of an air inlet with holes punched in the lower wall of the main body of the energy-gathering ring. At this time, the supporting feet may only provide a supporting function or assist in enclosing another semi-open form of air inlet.

[0017] As a further improvement of the above technical solution, the main body of the energy-gathering ring is a component with a uniform thickness. After forming, the overall energy-gathering ring is in the shape of a horn or a bowl-shaped component with openings at both the top and bottom, which is relatively light, saves materials, and is convenient for matching with existing cookers.

[0018] As a further improvement of the above technical solution, there are four air inlets, which are evenly distributed at equal intervals around the central axis. The four evenly distributed air inlets are conducive to the uniform and reasonable amount of external air entering. If the air inlets are formed by the arrangement of two adjacent supporting feet, it is equivalent to that the supporting feet are evenly distributed in a circle at this time. The four evenly distributed supporting feet can ensure the stable placement of the energy-gathering ring, and at this time, the supporting feet can be designed to be relatively narrow, so as to leave more space for the air inlets in terms of width.

[0019] Next, a gas stove burner system is provided, including:

[0020] A burner;

[0021] And, the energy-gathering ring as described above and any one of its adapted improvement schemes, the energy-gathering ring is sleeved outside the burner, and the minimum diameter difference δ between the rotating surface of the energy-gathering ring and the outer peripheral wall of the burner is 5 mm, and the tolerance value is ±0.5 mm;

[0022] A water pan, which is sleeved outside the lower part of the burner, and the air inlet of the energy-gathering ring is located on the surface of the water pan;

[0023] A stove rack, which includes an annular stove rack frame body and stove ears, and the stove ears correspondingly pass through the notches, so that the vertical distance h between the upper end surface of the stove ears and the upper end surface of the main body of the energy-gathering ring is 3 mm, and the tolerance value is ±2 mm.

[0024] As described above, the general specification of the outer peripheral diameter of the burner on the market at present is Therefore, correspondingly, the energy-gathering ring provided by the present invention can be selected with a diameter of 75 mm, 110 mm, 130 mm, 140 mm or 145 mm to meet the requirement that the minimum diameter difference between the rotating surface of the energy-gathering ring and the outer peripheral wall of the burner is 5 mm. Of course, if there are other models of burners, correspondingly, the size of the energy-gathering ring should also be modified to ensure that the above minimum diameter difference is 5 mm.

[0025] The gas stove burner system of the present invention optimizes the curve shape of the inner surface of the energy-gathering ring, and makes the minimum diameter difference δ between the rotating surface of the energy-gathering ring and the outer peripheral wall of the burner 5 mm. This makes the gap through which the secondary air enters the combustion space enclosed by the energy-gathering ring relatively narrow when the secondary air enters from below, and yet it will not cause the air to be unable to be replenished, effectively locking in the loss of flame heat. The annular curved surface formed by the second line segment and the third line segment around the central axis forms a relatively large space with the burner, and in combination with the space below the energy-gathering ring, it forms a Venturi structure. Therefore, when in operation, when the cooking utensil is placed on the stove rack, after the combustion flue gas is discharged from the upper end of the energy-gathering ring, a low-pressure combustion space will be formed among the energy-gathering ring, the burner, and the bottom of the cooking utensil. The external atmospheric pressure will force the air to enter the combustion space from the 5-mm gap, that is, the secondary air inlet, and the Venturi structure is more conducive to the entrainment of secondary air. The vertical distance h between the upper end surface of the burner ear and the upper end surface of the main body of the energy-gathering ring in the vertical direction is 3 mm. After the bottom of the cooking utensil is placed on the stove rack, the height of the smoke exhaust outlet left between the bottom of the cooking utensil and the upper end surface of the main body of the energy-gathering ring is also 3 mm. The relatively narrow height of the smoke exhaust outlet increases the smoke exhaust resistance, enabling the flue gas to stay in the combustion space for a longer time to exchange heat with the cooking utensil, increasing the utilization rate of the flue gas and improving the energy efficiency. In addition, the annular curved surface formed by the third line segment rotating around the central axis protrudes obliquely downward relative to the annular curved surface below it, and the formed streamline is more suitable for the combustion characteristics of the flame, which is more conducive to improving the temperature uniformity in the combustion space and enhancing the heat exchange efficiency.

[0026] It should be noted that the above-mentioned numerical values of each dimension include tolerance values.

[0027] As a further improvement of the above technical solution, there are four burner ears, which are evenly distributed circumferentially around the center of the stove rack frame, and four corresponding notches are also provided. The preferred quantity matching of the burner ears and the notches can meet the general requirements for the stable placement of cooking utensils.

[0028] As a further improvement of the above technical solution, the width of the notch is 5 mm. The width of the notch is adapted to the width of the burner ear. Otherwise, the burner ear cannot pass through the notch smoothly. Therefore, this enables the burner ear to be made correspondingly narrower, so that more space can be left in the width direction for the smoke exhaust outlet to exhaust smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following further describes the present invention with reference to the drawings and embodiments;

[0030] Figure 1 is a schematic diagram of the overall external shape of the energy-gathering ring provided by the present invention;

[0031] Figure 2 is a semi-sectional view of the energy-gathering ring provided by the present invention, in which the generatrix of the rotating surface is shown in bold, and the upward and downward directions are respectively marked with thin arrows;

[0032] Figure 3 It is an exploded schematic view of the assembly of the gas stove burner system provided by the present invention. The double-dashed line is used to indicate the direction of the assembly path;

[0033] Figure 4 It is a cross-sectional schematic view of the assembly of the gas stove burner system provided by the present invention;

[0034] Figure 5 It is a schematic view of the combustion simulation test effect of a common gas stove burner system without a concentrator ring. The depth of the color represents the temperature;

[0035] Figure 6 It is a schematic view of the combustion simulation test effect of a gas stove burner system with a common annular concentrator ring with δ = 25mm set in the gas stove burner system. The depth of the color represents the temperature;

[0036] Figure 7 It is a schematic view of the combustion simulation test effect of a gas stove burner system with a common annular concentrator ring with δ = 40mm set in the gas stove burner system. The depth of the color represents the temperature;

[0037] Figure 8 It is a schematic view of the combustion simulation test effect of a gas stove burner system with a pure convex concentrator ring with δ = 40mm and a monotonically outwardly convex busbar set in the gas stove burner system. The depth of the color represents the temperature;

[0038] Figure 9 It is a schematic view of the combustion simulation test effect of the gas stove burner system of the present invention. The depth of the color represents the temperature.

[0039] 100. Concentrator ring main body, 101. First line segment, 102. Second line segment, 1021. Lower curve segment, 1022. Upper curve segment, 103. Third line segment, 200. Support leg, 300. Notch, 10. Concentrator ring, 20. Burner, 30. Water tray, 40. Stove rack, 401. Stove ear, δ. Minimum diameter difference between the concentrator ring rotating surface and the outer peripheral wall of the burner, h. Vertical distance between the upper end surface of the stove ear and the upper end surface of the concentrator ring main body. Detailed implementation manners

[0040] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

[0041] In the description of the present invention, it should be understood that regarding the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0042] In the description of the present invention, if there are vocabulary descriptions such as "several", its meaning is one or more, and the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the base number, and understandings such as above, below, within, etc. include the base number.

[0043] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0044] Refer to Figures 1 to 4 , the following gives several embodiments of the system structure when the energy-gathering ring of the present invention is applied to a gas stove burner system.

[0045] The burner 20 is located in the central circular hole of the water pan 30. The water pan 30 is locked on the burner 20 through water pan screws. The outer periphery of the water pan 300 is sleeved with the burner grate 40. Then the energy-gathering ring 10 is placed on the water pan 20. There are supporting feet 200 under the energy-gathering ring 10. An air inlet is formed between adjacent supporting feet 200. The supporting feet 200 are in contact with the upper surface of the water pan 20 to support the energy-gathering ring main body 100. The number and orientation of the notches 300 of the energy-gathering ring 10 correspond one by one to the burner grate lugs 401 of the burner grate 40, so that after the burner grate lugs 40 pass through the notches 300, they protrude upward to expose, for supporting the bottom of the cooking utensil. When the externally provided cooking utensil is placed on the burner grate, a smoke exhaust outlet is formed between the bottom of the cooking utensil and the upper circumferential end surface of the energy-gathering ring 10. In fact, the height of the smoke exhaust outlet is the same as the distance h in the vertical direction between the upper end surface of the burner grate lug and the upper circumferential end surface of the energy-gathering ring main body 100. The air inlet serves as a secondary air inlet. Air enters from the air inlet and then passes upward through the annular channel formed between the rotating surface of the energy-gathering ring 10 and the outer peripheral wall of the burner 20, and then enters the combustion space surrounded by the energy-gathering ring 10 to assist combustion of the flame. The high-temperature flue gas after combustion is discharged from the smoke exhaust outlet, making the combustion space form a negative pressure, and further sucking more external air from the secondary air inlet to assist combustion subsequently.

[0046] In some embodiments, the height of the feet 200 is 2 mm, and correspondingly, the height of the air inlet is 2 mm. More specifically, the number of the feet 200 is four and they are equidistantly distributed around the central axis. At this time, the width of the feet 200 can be set to 10 mm, which can better adapt to the sizes of most of the energy concentrating rings 10 and leave a reasonable secondary air intake gap.

[0047] Referring to Figure 2 , the cross-sectional curve of the energy concentrating ring 10 in the inward direction of the vertical cross-section is the generatrix 110. The generatrix 110 includes multiple straight or curved segments from bottom to top, that is, at least includes the first segment 101, the second segment 102, and the third segment 103. In order to further optimize the curve efficiency, the second segment 102 is further divided into a lower curve segment 1021 and an upper curve segment 1022, and smooth transitions are adopted between each of the above segments. To facilitate the description of the bending direction of each segment of the curve, the following takes the energy concentrating ring 10 with a specification of

[0048] 130 mm and a height of 45 mm as an example to list the diameters of the circumferences where the endpoints of each segment are located: For the first segment 101, its shape is a curve that is convex downward and obliquely. The diameter of the circumference of its lower endpoint is

[0049] For the lower curve segment 1021, its shape is a curve that is convex upward and obliquely. The diameter of the circumference of its lower endpoint is The diameter of the circumference of its upper endpoint is

[0050] For the upper curve segment 1022, its shape is a curve that is convex upward and obliquely. The diameter of the circumference of its lower endpoint is The diameter of the circumference of its upper endpoint is

[0051] For the third segment 103, its shape is a curve that is concave downward and obliquely. The diameter of the circumference of its lower endpoint is The diameter of the circumference of its upper endpoint is

[0052] Of course, in production practice, in order to facilitate the manufacturing of workpieces, there are also embodiments in which the first segment 101 is directly designed as a straight segment extending vertically, and then smooth transitions are made at the joints of the solid segments on the basis of the above design dimensions.

[0053] The above-mentioned energy-gathering ring 10 is used to adapt to a burner 20 with an outer peripheral wall diameter of 140 mm. At this time, the width of the annular channel formed between the energy-gathering ring 10 and the burner 20 in the gas stove burner system is 5 mm. The height difference h between the furnace ear 401 and the upper end surface of the energy-gathering ring 10 is set to 3 mm, so that after the cooking utensil is placed, the height of the smoke exhaust outlet in the combustion space is 3 mm. The selection of at least one or more of the above sizes can produce the effect of facilitating the supplement of secondary air and lifting the high-temperature area, and reducing heat loss. Of course, the height difference h is also allowed to have a tolerance of ±2 mm.

[0054] Figures 5 to 9 The present invention makes combustion simulation comparison tests with several common types of energy-gathering rings respectively. It can be seen from the temperature distribution area that the combustion effect of the gas stove burner system of the present invention is the best, the heat is basically within the energy-gathering ring, and the temperature in the combustion space is relatively uniform, having good heat preservation and energy-gathering performance, and can greatly improve the utilization rate of heat.

[0055] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A energy - concentrating ring, characterized in that: Comprising: The energy concentrating ring body (100) has a trumpet-shaped cavity with a larger upper part and a smaller lower part at the center. The cavity penetrates the energy concentrating ring body (100) up and down. The surface of the cavity is a rotating surface, and the generatrix (110) of the rotating surface includes from bottom to top: The first line segment (101) is convex and bent obliquely downward as a whole, such that the The first line segment (101) is entirely located obliquely below the line connecting the two endpoints of the first line segment (101), or the first line segment (101) is a straight line segment extending downward; The second line segment (102) is convex and bent obliquely upward as a whole, such that the The second line segment (102) is entirely located obliquely above the line connecting the two endpoints of the second line segment (102); The third line segment (103) is concave and bent obliquely downward as a whole, such that the third line segment (103) is entirely located obliquely below the line connecting the two endpoints of the third line segment (103); The first line segment (101), the second line segment (102), and the third line segment (103) are sequentially connected and smoothly transitioned; An air inlet, which is located below the energy concentrating ring body (100); Notches (300) are provided on the energy concentrating ring body (100), and the number of notches is multiple, and they are arranged in a circumferential pattern around the central axis of the energy concentrating ring body (100).

2. The energy - concentrating ring according to claim 1, characterized in that: The second line segment (102) includes a lower curved segment (1021) and an upper curved segment (1022) connected from bottom to top, and the radius of curvature of the upper curved segment (1022) is greater than the radius of curvature of the lower curved segment (1021).

3. The energy - concentrating ring according to claim 1, characterized in that: The minimum diameter of the rotating surface of the energy concentrating ring main body (100) is with a tolerance value of ±0.5 mm, and the is one of the values of 75 mm, 110 mm, 130 mm, 140 mm, and 145 mm.

4. The energy - concentrating ring according to claim 1, characterized in that: At least two supporting feet (200) are provided below the energy concentrating ring body (100), and the air inlet is formed between two adjacent supporting feet (200).

5. The energy - concentrating ring according to any one of claims 1 to 4, characterized in that: The energy concentrating ring body (100) is a member with uniform thickness.

6. The energy - concentrating ring according to claim 5, characterized in that: There are four air inlets, which are evenly distributed at equal intervals around the central axis of the energy concentrating ring body (100).

7. A gas stove burner system, characterized in that: Comprising: A burner (20); The energy concentrating ring (10) according to any one of claims 1 to 6, the energy concentrating ring (10) is sleeved outside the burner (20), and the minimum diameter difference δ between the rotating surface of the energy concentrating ring (10) and the outer peripheral wall of the burner (20) is 5 mm, and the tolerance value is ±0.5 mm; A water pan (30) is sleeved outside the lower part of the burner (20), and the air inlet of the energy concentrating ring (10) is located on the disk surface of the water pan (30); A furnace frame (40) includes an annular furnace frame body and furnace lugs (401), and the furnace lugs (401) correspondingly pass through the notches (300), such that the vertical distance h between the upper end surface of the furnace lugs (401) and the upper circumferential end surface of the energy concentrating ring body (100) is 3 mm, and the tolerance value is ±2 mm.

8. The gas stove burner system according to claim 7, characterized in that: There are four furnace lugs (401), which are evenly distributed at equal intervals around the center of the furnace frame body in a circumferential pattern, and there are also four corresponding notches (300).

9. The gas stove burner system according to claim 7 or 8, characterized in that: The width of the notch (300) is 5 mm.

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