Energy-gathering hood for stove and gas stove using the energy-gathering hood for stove

Abstract

The present invention relates to an energy-gathering hood for a stove and a gas stove using the energy-gathering hood for a stove. Notches for inserting pot legs are provided around the top of the hood body. The roots of the pot legs inserted in the notches are connected by an annular ring. The adjacent pot legs and the annular ring together form a secondary air channel connecting the outside world and a central hole. An adjustment ring that can move vertically relative to the bottom of the hood body is provided on the bottom of the hood body, so as to change the position of the adjustment ring in the corresponding secondary air channel. Compared with the prior art, the advantage of the present invention is that the effective air flow rate of secondary air in the secondary air channel entering the central hole of the hood body can be adjusted by the adjustment ring that can slide vertically relative to the bottom of the hood body, so as to achieve the effect of adjusting the secondary air replenishment amount according to actual use needs, overcome the problem of large smoke emission caused by the energy-gathering hood lowering the smoke exhaust port, and put the burner in a stable and good combustion state.

Description

Technical Field

[0001] The invention belongs to the technical field of gas stoves, and relates to an energy-gathering cover for stoves and a gas stove having the energy-gathering cover for stoves. Background Art

[0002] In actual use of existing gas stoves, since the pot is placed on the pot support for heating, there is a certain space between the pot and the burner. In this way, in addition to being used to heat the pot, a considerable portion of the heat energy generated by the combustion of the gas escapes into the surrounding environment, causing energy waste. In order to solve the above problems, some heat-collecting and energy-gathering devices have appeared in China in recent years, such as "energy-gathering ring for gas stove and gas stove with the same" disclosed in Chinese patent CN203404823U, and "an energy-gathering gas stove" disclosed in Chinese patent CN204042984U, which also has an energy-gathering device. The energy pot bracket, the above-mentioned energy-gathering ring structure can reduce the consumption of heat energy to a certain extent, improve the thermal efficiency of the burner, and at the same time separate the smoke from the secondary air replenishment channel. For this reason, the above-mentioned energy-gathering ring is generally provided with a secondary air replenishment channel for replenishing secondary air, such as the "energy-gathering ring for gas stoves and gas stoves with the same" disclosed in Chinese patent ZL201320460471.1, which includes a first reflection ring and a second reflection ring that effectively increase the overall reflection and energy-gathering area of ​​the energy-gathering ring, and an air replenishment channel is provided between the upper end of the first reflection ring and the lower end of the second reflection ring. The problem of insufficient air supply during gas combustion can be solved by setting up an air supply channel. In order to reduce CO emissions, the secondary air supply should be as sufficient as possible and often excessive. Excessive secondary air supply will take away a large part of the heat energy generated by gas combustion. In addition to achieving the energy-gathering effect by adding an energy-gathering hood, the smoke outlet can also be lowered (the height of the smoke outlet refers to the distance from the highest plane of the edge of the energy-gathering hood to the bottom of the pot, that is, the effective height at which the smoke can be discharged). For example, the height of the smoke outlet of the existing energy-gathering hood is 10mm, so the smoke and heat that can be discharged If the height of the smoke outlet is reduced to 6mm, the smoke cannot be discharged smoothly, and the amount of smoke discharged will be reduced accordingly, causing the smoke to gather in the internal space from the bottom of the pot to the energy-gathering hood, thereby increasing the resistance of the secondary air replenishment channel to replenish the secondary air, and replenishment cannot be made, resulting in incomplete combustion and reduced thermal efficiency. At the same time, toxic and harmful gases such as carbon monoxide will also be produced; but if the secondary air replenishment channel is too large, the amount of secondary air sucked in is large, and the heat carried away by the smoke exhaust increases, resulting in low thermal efficiency; if the secondary air replenishment channel is too small, insufficient secondary air replenishment will inevitably lead to incomplete combustion and excessive smoke emissions. In order to ensure that the gas stove has very good performance in efficiency and smoke emissions under different user environments, that is, under the premise of lowering the smoke outlet, the ability to supplement an appropriate amount of secondary air has a great impact on the combustion conditions. Summary of the invention

[0003] A technical problem to be solved by the present invention is to provide a stove energy-gathering hood with strong adaptability, which can effectively adjust the air outlet volume of the secondary air replenishment channel air outlet in view of the above-mentioned existing technical status.

[0004] Another technical problem to be solved by the present invention is to provide a gas stove using the above-mentioned stove energy collecting hood in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: the energy-concentrating hood for the stove is in the shape of an annular disk with a central hole, and notches for the pot legs to be inserted into are opened around the top of the hood. The roots of the pot legs inserted into the notches are connected by an annular ring, and the adjacent pot legs and the annular ring together form a secondary air channel connecting the outside world and the central hole. An adjustment ring is provided on the bottom of the hood, which can move vertically relative to the bottom of the hood, thereby changing the position of the adjustment ring in the corresponding secondary air channel.

[0006] There are many structures of the adjustment ring, as long as it can move vertically relative to the bottom of the cover body, thereby adjusting the size of the air outlet of the secondary air channel, and finally determining the amount of secondary air entering the central hole of the energy collecting cover, preferably, the adjustment ring includes an annular body, and a concave cavity is formed between the annular top wall of the annular body and the inner and outer annular walls extending vertically downward from the inner and outer edges of the annular top wall. The formation of the concave cavity can not only save costs, but also buffer the speed of the secondary air entering the central hole through the secondary air channel on the one hand, and effectively preheat the secondary air on the other hand. Of course, if at least two spiral or circumferentially extending ribs are arranged at intervals on the circumference of the concave cavity, and there is a gap between the two ribs to form a channel for preheating the secondary air, the effect will be better.

[0007] In order to facilitate the adjustment of the distance between the adjustment ring and the bottom of the cover body, so as to enlarge or reduce the effective air flow rate of the secondary air in the secondary air channel entering the central hole, a convex ring protrudes downwardly from the bottom of the cover body adjacent to the outer ring wall, and the outer ring wall can rotate or slide relative to the convex ring.

[0008] In order to further adjust the distance of the adjustment ring relative to the bottom of the cover body, and also adjust the distance of the adjustment ring relative to the central hole, the adjustment ring can also move in the circumferential direction relative to the central hole.

[0009] Furthermore, the adjustment ring includes an inner ring body and an outer ring body which are arranged with an inner spacing therebetween, the outer edge of the outer ring body has an outer peripheral wall extending downward, the bottom of the cover body is adjacent to the outer peripheral wall and has a convex strip protruding downward, and the outer peripheral wall can rotate relative to the convex strip, thereby changing the position of the inner ring body in the corresponding secondary air channel.

[0010] In order to solve the second technical problem, the present invention provides a gas stove using the above-mentioned energy-gathering hood for a stove, comprising a gas stove panel and a burner, wherein the burner comprises an air mixing chamber and a secondary air inlet arranged on the air mixing chamber, and the hood body surrounds the burner with its inner edge and is placed on the gas stove panel, characterized in that: the secondary air passage is arranged corresponding to the secondary air inlet.

[0011] In order to be closer to the central hole of the cover body and to be more directly disposed at the outlet end of the secondary air passage adjacent to the central hole, the inner edge of the annular body of the adjustment ring is disposed adjacent to the inner edge of the cover body.

[0012] In order to enable the secondary air in the secondary air channel to more independently replenish the secondary air channel to the inner ring fire cover fire outlet area and the outer ring fire cover fire outlet area, when the outer peripheral wall is rotated downward in the vertical direction relative to the convex strip, the inner ring body and the outer ring body of the adjustment ring divide the secondary air channel into a first air supply channel to supplement the inner ring fire cover fire outlet area and a second air supply channel to supplement the outer ring fire cover fire outlet area.

[0013] In order to better reflect heat energy and prevent affecting the flow of secondary air, when the inner ring of the adjustment ring enters the central hole, the radial gap δ between the inner ring and the outer edge of the mixing chamber in the burner is 6.5-10.5 mm.

[0014] In order to prevent the heat collected by the energy collecting hood from being transferred to the cooker panel, the burner is provided with a liquid collecting pan below the secondary air inlet, and at least two supporting feet for supporting the annular ring are protruding upward from the outer circumference of the liquid collecting pan. At the same time, the gap between the liquid collecting pan and the supporting feet is also used to guide the overflow.

[0015] Compared with the prior art, the advantage of the present invention is that through the adjustment ring that can slide vertically relative to the bottom of the cover body, the effective air flow rate of secondary air in the secondary air channel entering the central hole of the cover body can be adjusted, so that the secondary air replenishment volume can be adjusted according to actual use needs, overcoming the problem of large smoke emissions caused by the energy-gathering hood lowering the smoke exhaust port, and keeping the burner in a stable and good combustion state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the energy-gathering cover for a stove in Embodiment 1 of the present invention;

[0017] Figure 2 for Figure 1 A cross-sectional view of

[0018] Figure 3It is a cross-sectional view of the adjustment ring in Example 1 of the present invention, which is moving downward in the vertical direction relative to the bottom of the cover body;

[0019] Figure 4 This is a schematic diagram of the structure of the stove energy-gathering cover in Embodiment 1 of the present invention, which surrounds the burner with its inner edge and is placed on the gas stove panel;

[0020] Figure 5 for Figure 4 A cross-sectional view of

[0021] Figure 6 for Figure 4 A cross-sectional view showing that the adjustment ring is in a state of moving downward in the vertical direction relative to the bottom of the cover body;

[0022] Figure 7 This is a schematic structural diagram of an energy-gathering cover for a stove in Embodiment 2 of the present invention;

[0023] Figure 8 Schematic diagram of the structure of the adjustment ring in Example 2 of the present invention;

[0024] Fig. 9 It is a cross-sectional view of the adjustment ring in Example 2 of the present invention, which is moving downward in the vertical direction relative to the bottom of the cover body;

[0025] Fig.10 It is a cross-sectional view of the adjustment ring placed on the gas stove panel in Example 2 of the present invention, and the adjustment ring does not move downward in the vertical direction relative to the bottom of the cover body;

[0026] Fig.11 for Fig.10 A cross-sectional view of the middle adjustment ring moving downward in the vertical direction relative to the bottom of the cover body. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figures 1 to 6As shown, the energy-gathering hood for stoves in this embodiment includes a ring-shaped hood body 1, the inner edge height of the hood body 1 is lower than the outer edge height, and the use of the hood body 1 can improve the thermal efficiency mainly because the energy-gathering hood hood body 1 effectively separates the channels of smoke and supplementary secondary air, and also regulates the flow direction of the secondary air. The inner edge of the hood body 1 is surrounded by a central hole 11 for secondary air to enter the inner periphery of the hood body 1, and the top periphery of the hood body 1 is provided with a notch 12 for the pot legs 2 to be inserted, and the roots of each pot leg 2 inserted in the notch 12 are connected by an annular ring 10, and the adjacent pot legs 2 and the annular ring 10 together form a secondary air channel 3 connecting the outside world and the central hole 11, and the bottom of the hood body 1 is provided with an adjustment ring 4 that can move vertically relative to the bottom of the hood body 1, thereby changing the adjustment ring 4 in the corresponding secondary air channel 3. The position of the secondary air passage 3 is changed, thereby changing the effective airflow rate of the secondary air entering the central hole 11, and when the adjustment ring 4 enters the secondary air passage 3, part of the secondary air cannot enter the central hole 11 of the cover body 1 due to the obstruction of the adjustment ring 4, wherein the adjustment ring 4 can enter the central hole 11 in a rotating manner or in a sliding manner. In this embodiment, the rotation is described as a preferred manner. Specifically, the adjustment ring 4 includes an annular body 41, and the annular body 41 has an annular shape. A concave cavity 414 is formed between the top wall 411 and the inner annular wall 412 and the outer annular wall 413 extending vertically downward from the inner edge and the outer edge of the annular top wall 411. The formation of the concave cavity 414 is not only to save costs, but also to buffer the speed of the secondary air entering the central hole 11 through the secondary air channel 3 on the one hand, and to effectively preheat the secondary air on the other hand. Of course, if at least two spiral or circumferentially extending ribs are arranged at intervals on the circumference of the concave cavity 414, and there is a gap between the two ribs to form a channel for preheating the secondary air, the effect is better; in order to be closer to the position of the central hole 11 of the cover body 1, the inner edge of the annular body 41 of the adjustment ring 4 is arranged adjacent to the inner edge of the cover body 1, so that the adjustment ring 4 can be arranged in a more direct way at the outlet end of the secondary air channel adjacent to the central hole 11, thereby increasing or decreasing the amount of air supplied to the central hole 11 of the cover body 1, so as to achieve the effect of adjusting the secondary air supply amount according to actual use needs, so that the burner 5 is in a stable and good combustion state.

[0030] The present invention also provides a gas stove using the above-mentioned stove energy-gathering hood, which includes a gas stove panel and a burner 5, wherein the burner 5 includes a base, an inner ring fire cover 51 arranged on the base to form a central air mixing chamber with the base, and an outer ring fire cover 52 arranged on the base, located on the periphery of the inner ring fire cover 51, and forming an outer ring air mixing chamber with the base, an air replenishing chamber 53 is formed between the central air mixing chamber and the outer ring air mixing chamber, and a plurality of radial secondary air inlets 54 for connecting the air replenishing chamber 53 and the central hole 11 are also provided on the base at intervals along the circumferential direction, the hood body 1 surrounds the burner 5 with its inner edge and is placed on the liquid receiving tray 6 of the gas stove panel, and the adjusting member is arranged adjacent to the secondary air inlet 54. In order to make the adjustment ring 4 also have the function of separating the secondary air inlet 54, the adjustment ring 4 is lower than the highest point of the secondary air inlet 54 but not lower than the lowest point of the secondary air inlet 54, so as to realize the distribution effect of the secondary air energy supplied to the inner ring and the outer ring of the burner 5. In order to prevent the energy collecting hood from gathering the heat of the burner 5 during the combustion process and conducting it to the stove panel, the burner 5 is provided with a liquid collecting pan 6 under the secondary air inlet 54. The outer peripheral edge of the liquid collecting pan 6 is protruding upward with a plurality of supporting feet 61 for supporting the annular ring 10. At the same time, the gap between the liquid collecting pan 6 and the supporting feet 61 is also used to guide overflow.

[0031] Example 2

[0032] like Figures 7 to 11 As shown, the structure is basically the same as that of Example 1, and the only difference is that the adjustment ring 4′ includes an inner ring body 42 and an outer ring body 43 arranged with an inner space, and the outer edge of the outer ring body 43 extends downward with an outer peripheral wall 431, and the bottom of the cover body 1 is adjacent to the outer peripheral wall 431 and a convex strip 14 protrudes downward, and the outer peripheral wall 431 can rotate relative to the convex strip 14, thereby changing the position of the inner ring body 42 in the corresponding central hole 11. When the inner ring body 42 of the adjustment ring 4′ enters the central hole 11, the radial gap δ between the inner ring body 42 and the outer edge of the mixing chamber in the burner 5 is 6.5~10.5mm, and preferably δ is 8mm. When the outer peripheral wall 431 of the adjustment ring′ rotates downward in the vertical direction relative to the convex strip 14, the inner ring body 42 and the outer ring body 43 of the adjustment ring 4′ divide the secondary air channel 3 into a first air supply channel 31 for supplementing the fire area of ​​the inner ring fire cover 51 and a second air supply channel 32 for supplementing the fire area of ​​the outer ring fire cover 52.

Claims

1. A stove energy-gathering hood, comprising a hood body (1), the hood body (1) being in the shape of an annular disk with a central hole (11), a notch (12) for inserting a pot support leg (2) being provided at the periphery of the top of the hood body (1), the roots of each pot support leg (2) inserted in the notch (12) being connected by an annular ring (10), adjacent pot support legs (2) and the annular ring (10) together enclose a secondary air passage (3) connecting the outside with the central hole (11), an adjustment ring (4) being arranged on the bottom of the hood body (1) and being able to move vertically relative to the bottom of the hood body (1), thereby changing the position of the adjustment ring (4) in the corresponding secondary air passage (3); The adjustment ring (4) comprises an annular body (41), and a concave cavity (414) is formed between an annular top wall (411) of the annular body (41), an inner annular wall (412) and an outer annular wall (413) extending vertically downward from the inner and outer edges of the annular top wall (411); A convex ring (13) protrudes downwards from the bottom of the cover body (1) adjacent to the outer annular wall (413), and the outer annular wall (413) can rotate or slide relative to the convex ring (13).

2. A stove energy-gathering hood, comprising a hood body (1), the hood body (1) being in the shape of an annular disk with a central hole (11), a notch (12) for inserting a pot support leg (2) is provided on the periphery of the top of the hood body (1), the roots of each pot support leg (2) inserted in the notch (12) are connected by an annular ring (10), adjacent pot support legs (2) and the annular ring (10) together form a secondary air passage (3) connecting the outside with the central hole (11), and an adjustment ring (4') is provided on the bottom of the hood body (1) so as to change the position of the adjustment ring (4') in the corresponding secondary air passage (3); The adjustment ring (4') can also move in the circumferential direction relative to the central hole (11); The adjustment ring (4′) comprises an inner ring body (42) and an outer ring body (43) which are arranged at an inner spacing. The inner ring body (42) partially extends into the central hole (11). The outer edge of the outer ring body (43) has an outer peripheral wall (431) extending downward. A convex strip (14) protrudes downward from the bottom of the cover body (1) adjacent to the outer peripheral wall (431). The outer peripheral wall (431) can rotate relative to the convex strip (14), thereby changing the position of the inner ring body (42) in the corresponding secondary air channel (3).

3. The gas stove with a stove energy-gathering hood according to claim 1 comprises a gas stove panel and a burner (5), wherein the burner comprises a base (50), an inner ring fire cover (51) arranged on the base (50) and forming a central air mixing chamber with the base (50), and an outer ring fire cover (52) arranged on the base (50) and located on the periphery of the inner ring fire cover (51) and forming an outer ring air mixing chamber with the base (50), an air supplement chamber (53) is formed between the central air mixing chamber and the outer ring air mixing chamber, and the base (50) is also provided with a plurality of radial secondary air inlets (54) for connecting the air supplement chamber (53) with the central hole (11) at intervals along the circumferential direction, and the hood body (1) surrounds the burner (5) with its inner edge and is placed on the gas stove panel, characterized in that: The secondary air passage (3) is arranged corresponding to the secondary air inlet (54).

4. The gas stove according to claim 3, characterized in that: The inner edge of the annular body (41) of the adjustment ring (4) is arranged adjacent to the inner edge of the cover body (1).

5. The gas stove according to claim 4, characterized in that: The burner (5) is provided with a liquid receiving tray (6) below the secondary air inlet (54), and the outer periphery of the liquid receiving tray (6) is provided with at least two support legs (61) protruding upwards for supporting the annular ring (10).

6. The gas stove with a stove energy-gathering hood according to claim 2 comprises a gas stove panel and a burner (5), wherein the burner comprises a base (50), an inner ring fire cover (51) arranged on the base (50) and forming a central air mixing chamber with the base (50), and an outer ring fire cover (52) arranged on the base (50) and located on the periphery of the inner ring fire cover (51) and forming an outer ring air mixing chamber with the base (50), an air supplement chamber (53) is formed between the central air mixing chamber and the outer ring air mixing chamber, and the base (50) is also provided with a plurality of radial secondary air inlets (54) for connecting the air supplement chamber (53) with the central hole (11) at intervals along the circumferential direction, and the cover body (1) surrounds the burner (5) with its inner edge and is placed on the gas stove panel, characterized in that: The secondary air passage (3) is arranged corresponding to the secondary air inlet (54).

7. The gas stove according to claim 6, characterized in that: When the outer peripheral wall (431) is rotated downward in the vertical direction relative to the convex strip (14), the inner ring body (42) and the outer ring body (43) of the adjustment ring (4′) separate the secondary air channel (3) into a first air supply channel (31) for supplying the fire outlet area of ​​the inner ring fire cover (51) and a second air supply channel (32) for supplying the fire outlet area of ​​the outer ring fire cover (52).

8. The gas stove according to claim 6, characterized in that: The inner ring body (42) of the adjustment ring (4') can partially extend into the central hole (11), and the radial clearance δ between the inner ring body (42) and the outer ring mixing chamber outer edge of the burner (5) is 6.5-10.5 mm.

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