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, comprising an annular hood body, wherein the inner edge of the hood body forms an opening for secondary air to enter the hood inner periphery, and the characteristic is that the hood body is provided with an adjusting member capable of changing the size of the opening. The present invention also provides a gas stove using the above-mentioned energy-gathering hood for a stove. Compared with the prior art, the advantage of the present invention lies in that the hood body is connected with an opening capable of changing the inner edge of the hood body for secondary air to enter the hood inner periphery, so that the amount of secondary air replenishment can be adjusted according to actual use needs, and the problem of large smoke emission caused by the energy-gathering hood lowering the smoke exhaust port is overcome, so that the burner is 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 problem, some heat-collecting and energy-collecting devices have appeared in China in recent years, such as "Energy-collecting ring for gas stove and gas stove with the same" disclosed in Chinese patent CN203404823U, and "A kind of energy-collecting gas stove" disclosed in Chinese patent CN204042984U. The gas stove also has Energy-gathering 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 stove and gas stove with it" 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 which can effectively adjust the size of the secondary air replenishment channel and has strong adaptability 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-gathering hood for the stove includes an annular hood body, the inner edge of the hood body is surrounded by an opening for secondary air to enter the inner periphery of the hood body, and the characteristic is that an adjustment member capable of changing the size of the opening is arranged on the hood body.

[0006] In order to achieve that the adjustment member can change the size of the opening, the adjustment member can at least partially enter the opening in the radial direction, and the secondary air entering the opening is reduced by blocking the opening. Each adjustment member can be adjusted synchronously, or one can be selectively adjusted according to the actual combustion conditions of the user.

[0007] The adjusting member enters the opening in a rotatable manner or a slidable manner. The rotatable manner is a technical solution in which the adjusting member includes at least one baffle plate arranged on the upper surface of the bottom of the cover body in a rotatable opening and closing manner. This manner is similar to the rotatable opening and closing of a camera shutter.

[0008] Furthermore, at least one outwardly protruding pivot is arranged at intervals along the circumferential direction at the central position of the upper surface of the bottom of the cover body, and the root of each baffle is pivoted on the corresponding pivot to enable the root of each baffle to enter the opening. The opening is reduced by entering the opening through the root of the baffle, and the pivoting of each baffle can be adjusted manually or by other electric methods, and can be pivoted synchronously or asynchronously. If overflow occurs to block the fire hole, the baffle is rotated from the outside to the inside to prevent excessive secondary air replenishment.

[0009] The baffles can also rotate synchronously, and one of the ways of synchronous rotation can be: the end of each baffle is also connected to a transmission member that can drive each baffle to rotate synchronously.

[0010] From the perspective of simple structure and easy operation, the transmission member includes a transmission ridge arranged on the periphery of each baffle and rotating circumferentially along the upper surface of the bottom of the cover body, and a transmission bar that can drive the end of the baffle to rotate, and the transmission bar can rotate with the rotation of the transmission ridge.

[0011] Furthermore, the transmission member includes a transmission bar arranged circumferentially along the upper surface of the bottom of the cover body and a transmission convex strip driving the baffle to move circumferentially along the transmission bar, and the baffle is connected to the transmission convex strip.

[0012] Furthermore, the transmission bar has a first stop column and a second stop column protruding outwardly on both sides, the first stop column is connected to the transmission protrusion, and the second stop column is connected to the end of each stop plate, so that the transmission bar can drive the root of each stop plate to rotate relative to its respective pivot by applying force to the second stop column through the first stop column.

[0013] Among them, in addition to the above-mentioned rotation adjustment, a sliding technical solution can also be used to achieve the selective adjustment of the adjusting member, and the adjusting member can enter the opening in a radial sliding manner.

[0014] The adjusting member comprises at least one outwardly protruding positioning block arranged along the circumference of the upper surface of the bottom of the cover body and a push plate capable of sliding relative to each positioning block.

[0015] Correspondingly, a sliding groove capable of sliding relative to the positioning block is provided at the root of the push plate.

[0016] The push plates can also slide synchronously, wherein one of the ways of synchronous sliding can be: the adjusting member further includes an actuating member capable of driving each of the push plates to slide synchronously.

[0017] From the perspective of simple structure and convenient operation, the actuator includes a protrusion arranged on the upper surface of the push plate adjacent to the inner edge of the cover body, at least one groove arranged circumferentially at intervals along the upper surface of the bottom of the cover body, a first protrusion rotatably embedded in the groove, a second protrusion arranged on the push plate, and a connecting rib connecting the first protrusion and the second protrusion. The part of the second protrusion corresponding to each protrusion has a plurality of steps that are gradually inclined outward from the inside to the outside. When the first protrusion drives the second protrusion to rotate, the protrusion can slide along the plurality of steps to achieve the step-by-step sliding of the push plate.

[0018] In order to achieve the purpose of the invention that the adjusting member changes the size of the opening, it can also be achieved in the following manner: the adjusting member can change the size of the opening in a radially retractable manner relative to the opening.

[0019] Furthermore, a trigger is provided on the lower surface of the bottom of the cover body, which is used to drive the adjusting member to radially extend and retract relative to the opening; and an elastic member acting on the adjusting member, which makes the adjusting member have a tendency to radially extend toward the center of the opening. The elastic member is connected through a connecting seat provided on the upper surface of the bottom of the cover body to facilitate the adjustment of the relative distance between the adjusting member and the opening.

[0020] Furthermore, a connection seat for connecting the elastic member is provided on the upper surface of the bottom of the cover body, the adjusting member can slide radially relative to the connection seat, one end of the elastic member is connected to the connection seat, and the other end of the elastic member is connected to the adjusting member. Each adjusting strip can be adjusted in sections according to actual use.

[0021] Furthermore, the adjustment member includes at least two adjustment strips formed in a circle, the connecting seat is T-shaped, the transverse portion of the connecting seat is connected to one end of the elastic member, and the vertical portion of the connecting seat extends into the adjustment strip, and the adjustment strip can slide radially relative to the vertical portion.

[0022] In order to facilitate the sliding of the adjustment strip relative to the connecting seat, the adjustment strip has a socket for the vertical portion to extend into, and the two opposite side walls of the socket mouth are provided with guide grooves, and correspondingly, the two sides of the vertical portion have guide rails that cooperate with the guide grooves.

[0023] Furthermore, the trigger member includes a sliding portion that can slide vertically relative to the lower surface of the bottom of the cover body and a trigger member that can trigger the adjustment strip to extend and retract relative to the opening. When the sliding portion moves vertically upward relative to the lower surface of the bottom of the cover body, the trigger member can touch the adjustment strip and then trigger the elastic member to enter an energy storage state. When the elastic member is in an energy release state, the adjustment strip has a tendency to extend outward into the opening.

[0024] Furthermore, the trigger member includes an inverted "L"-shaped body, a convex strip protrudes downward from the bottom of the cover body adjacent to the body, the vertical arm of the body can rotate relative to the convex strip, and the vertical arm constitutes the sliding part.

[0025] Preferably, from the perspective of simple installation with the bottom of the cover body, a convex wall is protruded upward on the upper end surface of the horizontal arm of the main body, and the convex wall has a slope that tilts backward from top to bottom. The convex wall constitutes the triggering portion, and correspondingly, the bottom of the adjustment strip has an inverted "V"-shaped notch. When the convex strip moves vertically upward relative to the lower surface of the bottom of the cover body, the convex wall can trigger the adjustment strip to slide from top to bottom along the convex wall until it slides to the middle tip of the notch, and the elastic member then enters an energy storage state.

[0026] In order to solve the second technical problem, the present invention provides a gas stove using the above-mentioned stove energy-gathering hood, 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 adjusting member is arranged adjacent to the secondary air inlet.

[0027] In order to enable the adjusting member to also have the function of separating the secondary air inlet, the baffle of the adjusting member is lower than the highest point of the secondary air inlet but not lower than the lowest point of the secondary air inlet.

[0028] In order to better reflect heat energy and prevent affecting the flow of secondary air, when the adjusting member of the energy focusing cover enters the opening, the radial gap δ between the adjusting member and the outer edge of the mixing chamber in the burner is 6.5-10.5 mm.

[0029] In order to increase the stability of the cover body when it is arranged on the stove, at least two supporting feet for supporting the cover body extend downward from the inner edge of the cover body.

[0030] In order to increase the stability of the pot feet on the cover body, the peripheral wall of the cover body is also provided with notches for the pot feet to be inserted into, and the pot feet are connected to each other by an annular ring, and the adjacent pot feet, the annular ring and the outer peripheral wall of the cover body together form a secondary air channel connecting the outside world and the secondary air inlet, and when the adjusting member can at least partially enter the opening in a radial direction, the secondary air in the secondary air channel can be blocked from entering the opening from bottom to top.

[0031] Compared with the prior art, the advantage of the present invention is that an adjustment part is connected to the cover body to change the opening formed by the inner edge of the cover body for secondary air to enter the inner periphery of the cover body, thereby achieving the effect of adjusting the amount of secondary air supply 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

[0032] Figure 1 This is a structural schematic diagram of the energy-gathering cover for a stove in Embodiment 1 of the present invention when the baffle is rotated and opened;

[0033] Figure 2 This is a schematic diagram of the exploded structure of the energy-gathering cover for a stove in Embodiment 1 of the present invention when the baffle is rotated and closed;

[0034] Figure 3 It is a three-dimensional schematic diagram of the stove energy gathering cover in Embodiment 1 of the present invention, which is placed on the gas stove in a state where the baffle is rotated and closed;

[0035] Figure 4 for Figure 3 A partial cross-sectional view;

[0036] Figure 5 for Figure 4 A cross-sectional schematic diagram from another angle;

[0037] Figure 6It is a three-dimensional schematic diagram of the stove energy gathering cover in Embodiment 1 of the present invention, which is placed on the gas stove in a state where the baffle is rotated and opened;

[0038] Figure 7 This is a structural schematic diagram of the energy-gathering cover for a stove in Embodiment 2 of the present invention when the baffle is rotated and opened;

[0039] Figure 8 This is a schematic structural diagram of the energy-gathering cover for a stove in Embodiment 3 of the present invention when the baffle is closed;

[0040] Fig. 9 This is a schematic structural diagram of the energy-gathering cover for a stove in Embodiment 4 of the present invention when the baffle is closed;

[0041] Fig.10 It is a schematic structural diagram of the energy concentrating cover for a stove in Example 4 of the present invention when the baffle is slid open.

[0042] Fig.11 This is a schematic diagram of the structure in which the energy-gathering cover for a stove in Embodiment 5 of the present invention is located outside the adjustment member and extends into the opening;

[0043] Fig.12 for Fig.11 A cross-sectional view of

[0044] Fig.13 It is a schematic diagram of the structure of a single adjustment bar in Example 5 of the present invention;

[0045] Fig.14 This is a schematic diagram of the structure in which the energy-gathering cover for a stove in Embodiment 5 of the present invention is retracted into the opening of the adjusting member;

[0046] Fig.15 for Fig.14 A cross-sectional view of

[0047] Fig.16 This is a schematic diagram of the structure in which the energy-gathering cover for a stove is separated from the stove panel and the adjustment member extends outwardly into the opening in Embodiment 5 of the present invention;

[0048] Fig.17 for Fig.16 A cross-sectional view of

[0049] Fig.18 This is a cross-sectional view of a stove energy collecting cover in Example 5 of the present invention, which is separated from the stove panel and the adjusting member is retracted into the opening. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below with reference to the accompanying drawings.

[0051] Example 1

[0052] like Figures 1 to 6As shown, the energy-concentrating hood for the stove in this embodiment includes an annular hood body 1, and the inner edge 11 of the hood body 1 is lower than the outer edge 12. The main reason why the use of the hood body 1 can improve the thermal efficiency is that the energy-concentrating hood body 1 effectively separates the channels of the smoke and the supplementary secondary air, and also regulates the flow direction of the secondary air. The inner edge 11 of the cover body 1 is surrounded by an opening 2 for secondary air to enter the inner periphery of the cover body 1. The cover body 1 is connected with a device that can at least partially enter the opening 2 in a radial direction, and when the adjusting member enters the opening 2, the secondary air cannot enter the inner periphery of the cover body 1 due to the obstruction of the adjusting member, wherein the adjusting member can enter the opening 2 in a rotating manner or can enter the opening 2 in a sliding manner. In this embodiment, the rotating manner is adopted in a manner similar to a camera shutter, such as at least one baffle 4 arranged on the upper surface of the bottom of the cover body 1 in a rotating opening and closing manner, wherein at least one outwardly protruding pivot 3 is arranged at intervals along the circumferential direction at the central position of the upper surface of the bottom of the cover body 1, and the root 41 of each baffle 4 is pivotally connected to the respective corresponding pivot 3 to realize the entry of the root 41 of each baffle 4 into the opening 2, wherein the entry of the root 41 of each baffle 4 into the opening 2 realizes the reduction of the opening 2, and realizes the The pivoting can be adjusted manually or by other electric means, and can be pivoted synchronously or asynchronously. The preferred method is that the end 42 of each baffle 4 is also connected to a transmission member 5 that can drive each baffle 4 to rotate synchronously. From the perspective of simple structure and convenient operation, the transmission member 5 includes a transmission ridge 51 arranged on the periphery of each baffle 4 and rotating circumferentially along the upper surface of the bottom of the cover body 1, and a transmission bar 52 that can drive the end 42 of the baffle 4 to rotate. The transmission bar 52 can rotate with the rotation of the transmission ridge 51. Both sides of the transmission bar 52 have a first protruding baffle column 521 and a second baffle column 522. The first baffle column 521 is connected to the transmission ridge 51, and the second baffle column 522 is connected to the end 42 of each baffle 4, so that the transmission bar 52 can apply force to the second baffle column 522 through the first baffle column 521 to drive the root 41 of each baffle 4 to rotate relative to its respective pivot 3. During operation, it is only necessary to rotate the transmission convex strip 52 to synchronously drive each baffle 4 to rotate relative to its own pivot 3, thereby synchronously increasing or decreasing the size of the opening 2 for secondary air to enter the inner periphery 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 is in a stable and good combustion state.

[0053] The present invention also provides a gas stove using the above-mentioned energy-gathering cover for stoves, which includes a gas stove panel and a burner, wherein the burner includes a base 7, an inner ring fire cover 71 arranged on the base 7 and forming a central air mixing chamber with the base 7, an outer ring fire cover 72 arranged on the base 7, located on the periphery of the inner ring fire cover 71 and forming an outer ring air mixing chamber with the base 7, an air supplement cavity 73 is formed between the central air mixing chamber and the outer ring air mixing chamber, and the base 7 is also provided with a plurality of radial secondary air inlets 74 for connecting the air supplement cavity 73 with the outside at intervals along the circumferential direction, the cover body 1 surrounds the burner with its inner side edge 11 and is placed on the gas stove panel, and the adjusting member is arranged adjacent to the secondary air inlet 74. In order to make the adjusting member also have the function of separating the secondary air inlet 74, the baffle 4 of the adjusting member is lower than the highest point of the secondary air inlet 74 but not lower than the lowest point of the secondary air inlet 74. In order to increase the stability of the cover body 1 when it is set on the stove, the inner edge 11 of the cover body 1 extends downward to have at least two support legs 14 for supporting the cover body 1. In addition, in order to increase the stability of the pot legs 8 on the cover body 1, the peripheral wall of the cover body 1 is also provided with notches 15 for the pot legs 8 to be inserted into. The pot legs 8 are connected by an annular ring 81, and the adjacent pot legs 8, the annular ring 81 and the outer peripheral wall of the cover body 1 together form a secondary air channel 9 connecting the outside world and the secondary air inlet 74. When the regulating member can at least partially enter the opening 2 in the radial direction, the secondary air in the secondary air channel 9 can be blocked from entering the opening 2 from bottom to top. The main reason why the thermal efficiency of the gas stove using the energy-gathering hood can be increased is that the energy-gathering hood body 1 effectively separates the smoke and the supplementary secondary air, and also standardizes the flow direction of the secondary air. Refer to Figure 3 and 4 , the adjusting parts of the energy-gathering cover are synchronously rotated from outside to inside into the opening 2, and the radial clearance δ between each adjusting part and the outer edge of the mixing chamber in the burner is 6.5 mm, which not only reduces the amount of secondary air supplemented to the outer ring mixing chamber, but also reduces the amount of secondary air supplemented to the inner ring mixing chamber; when it is necessary to increase the amount of secondary air supplement, refer to Figure 5 For the sake of simplicity, only the secondary air entering the secondary air channel 9 on one side (see the dotted arrow) and the path of the flue gas inside the burner (see the solid arrow) are shown. The adjusting parts of the energy-gathering cover are synchronously rotated from the inside to the outside away from the opening 2. The radial gap δ between each adjusting part and the outer edge of the mixing chamber in the burner is 10 mm. When the baffle 4 rotates from the inside to the outside, a part of the root 41 of the baffle 4 will extend into the opening 2. Considering that the narrowing of this part of the channel affects the replenishment of secondary air, the outer ring fire cover 72 avoids the pot support foot 8 as a non-fire area. For this reason, the rotating rod 3 on the cover body 1, which serves as the rotation center of the adjusting baffle 4, the pot support foot 8, and the root 41 of the baffle 4 are on a straight line, which is conducive to eliminating this part of the adverse effects. Figure 6As shown, the position with large secondary air supplementary resistance is successfully avoided to the position of the pot-avoiding support foot 8 on the fire cover (i.e., the non-fire position). Such an arrangement helps to reduce the generation of incomplete combustion products during the delay.

[0054] Example 2

[0055] like Figure 7 As shown, the structure is basically the same as that of Example 1, with the only difference being that the adjusting member includes a pivot 3 and a baffle 4 arranged on the pivot 3, wherein the adjusting member is arranged on the upper surface of the bottom of the cover body 1 and is arranged circumferentially along the cover body 1, and the cover body 1 is provided with a guide groove (not shown in the figure) on the corresponding upper surface of the bottom, and the pivot 3 is slidably inserted in the guide groove. The baffle 4 is rotated relative to the pivot 3 manually, and each baffle 4 can be selectively adjusted according to the actual combustion conditions of the user. If overflow occurs to block the fire hole, the baffle 4 is rotated from the outside to the inside to prevent excessive secondary air supplementation.

[0056] Example 3

[0057] like Figure 8 As shown, the difference from Example 2 is that the adjusting member includes an upper surface arranged on the bottom of the cover body 1, a positioning block 10 arranged circumferentially along the cover body 1, and a push plate 101 slidably connected to the positioning block 10, wherein a positioning groove 1011 is provided on the push plate 101 for the positioning block 10 to pass through, and the push plate 101 slides relatively through the positioning block 10. Each push plate 101 can be selectively adjusted according to the actual combustion conditions of the user. If overflow occurs to block the fire hole, the push plate 101 is slid from the outside to the inside to prevent excessive secondary air supplement.

[0058] Example 4

[0059] like Fig. 9 and 10 As shown, the difference from Example 3 is that the adjusting member can also slide synchronously, and the synchronous sliding method is: the adjusting member also includes an actuator that can drive each push plate 101 to slide synchronously, and the actuator includes a protrusion 201 arranged on the upper surface of the push plate 101 adjacent to the inner edge 11 of the cover body 1, at least one groove 202 arranged circumferentially at intervals along the upper surface of the bottom of the cover body 1, a first convex ring 203 rotatably embedded in the groove 202, a second convex ring 204 arranged on the push plate 101, and a connecting rib 205 connecting the first convex ring 203 and the second convex ring 204, the part of the second convex ring 204 corresponding to each protrusion 201 has a multi-step step 2041 that is gradually inclined outward from the inside to the outside, and when the first convex ring 203 drives the second convex ring 204 to rotate, the protrusion 201 can slide along the multi-step step 2041 to achieve the step-by-step sliding of the push plate 101.

[0060] Example 5

[0061] like Figures 11 to 18 As shown, it is embodiment 5 of the present invention, which differs from embodiment 1 in that: the adjusting member 2' is arranged on the inner edge of the cover body 1 and can be radially extended relative to the opening 11', and also includes a trigger member 3' rotatably arranged on the lower surface of the bottom of the cover body 1 for driving the adjusting ring to extend and retract inward and outward relative to the opening 11', and an elastic member 4' acting on the adjusting member 2' so that the circumferential portion of the adjusting member 2 has a tendency to radially extend toward the center of the opening 11'.

[0062] In this embodiment, the elastic member 4′ is a compression spring. In order to facilitate the adjustment of the relative distance between the adjusting member 2′ and the opening 11′, a connecting seat 12′ for connecting the compression spring is provided on the upper surface of the bottom of the cover body 1. The adjusting member 2′ can slide radially relative to the connecting seat. One end of the compression spring is connected to the connecting seat 12′, and the other end of the compression spring is connected to the adjusting member 2′, so that the adjusting member 2′ always has a tendency to extend radially toward the center of the opening 11′. In order to realize that the adjusting member 2″ can be telescoped inward and outward relative to the opening 11′, so as to achieve the effect of adjusting the secondary air replenishment amount according to actual use needs, the adjusting member 2′ can be telescoped inward and outward relative to the opening 11′ as a whole, or it can be realized in the following segmented manner: the adjusting member 2′ includes at least two adjusting strips 21′ that are surrounded in a circle, the connecting seat 12′ is T-shaped, the transverse portion 121′ of the connecting seat 12′ is connected to one end of the elastic member 4′, and the vertical portion 122′ of the connecting seat 12′ extends into the adjusting strip 21′, and the adjusting strip 21′ can radially slide relative to the vertical portion 122′; in order to facilitate the sliding of the adjusting strip 21′ relative to the connecting seat 12′, the adjusting strip 21′ has a socket 211′ for the vertical portion 122′ to extend into, and the two opposite side walls of the mouth of the socket 211′ are provided with guide grooves 212′, and correspondingly, the two sides of the vertical portion 122′ have guide rails 123′ that cooperate with the guide grooves 212′.

[0063] The actuating member 3' includes a sliding portion that can slide vertically relative to the lower surface of the bottom of the cover body 1' and a touching portion that can trigger the adjustment strip 21' to extend inward and outward relative to the opening 11'. When the sliding portion moves vertically upward relative to the lower surface of the bottom of the cover body 1', the touching portion can touch the adjustment strip 21' and then trigger the elastic member 4' to enter the energy storage state. When the elastic member 4' is in the energy release state, the adjustment strip 21' has a tendency to extend outward into the opening 11'. Specifically, the touching member 3' includes an inverted "L"-shaped body 31', and a convex strip 13' protrudes downward from the bottom of the cover body 1 adjacent to the body 31'. The vertical arm 311' of the body 31' can rotate relative to the convex strip 13', and the vertical arm 311' constitutes the sliding portion. The upper end surface of the horizontal arm 312′ of the main body 31′ is upwardly protruded with a convex wall 313′, and the convex wall 313′ has an inclined surface 313a′ inclined backward from top to bottom. The convex wall 313′ constitutes a triggering portion. Correspondingly, the bottom of the adjustment strip 21′ has an inverted "V"-shaped notch 210′. When the convex strip 13′ moves vertically upward relative to the lower surface of the bottom of the cover body 1′, the convex wall 313′ can trigger the adjustment strip 21′ to slide along the convex wall 313′ from top to bottom until it slides to the middle tip portion 210a′ of the notch 210′, and the compression spring then enters the energy storage state. When the sliding portion, i.e., the vertical portion, slides downward relative to the lower surface of the bottom of the cover body 1′, on the one hand, it can cause the convex wall 313′ of the touching portion to touch the adjusting strip 21′, and on the other hand, it can also indirectly serve as a "gate" of the secondary air inlet channel of the cover body 1 to prevent the secondary air in the secondary air inlet channel from entering the opening 11′ from bottom to top. The secondary air inlet channel of the cover body 1 of this embodiment is arranged in the following manner: in order to increase the stability of the pot support leg 6′ on the cover body 1, the peripheral wall of the cover body 1 is also provided with an installation opening 10′ for the pot support leg 6′ to be plugged in, and each pot support leg 6′ is connected by an annular ring 7′, and the adjacent pot support legs 6′, the annular ring 7′ and the outer peripheral wall of the cover body 1 together form a secondary air channel 8′ connecting the outside world and the secondary air inlet 52′.

[0064] The body 31' of the trigger member 3' of the present invention drives the adjustment strip 21' to extend radially inward and outward relative to the opening 11', and has the following two matching states:

[0065] In the radially retracted state away from the center of the opening, the convex strip 13' of the body 31' of the actuator 3' moves vertically upward relative to the lower surface of the bottom of the cover body 1, and the convex wall 313' of the body 31' of the actuator 3' can trigger the adjustment strip 21' to slide along the convex wall 313' from top to bottom until it slides to the middle tip portion 210a' of the notch 210' at the bottom of the convex strip 13', and the elastic member 4' then enters the energy storage state;

[0066] In the radially extended state toward the center of the opening, the convex strip 13′ of the actuator 3′ body 31′ moves vertically downward relative to the lower surface of the bottom of the cover body 1′, and the adjustment strip 21′ slides from bottom to top along the convex wall 313′ under the action of the elastic member 4′ in the energy release state. When the convex strip 13′ turns to the lowest position, the mutual contact between the adjustment strip 21′ and the convex wall 313′ can still be ensured, or when the elastic member 4′ has completed releasing the rebound force, the mutual contact between the adjustment strip 21′ and the convex wall 313′ can still be ensured.

[0067] The gas stove of the present embodiment using the above-mentioned stove energy gathering hood comprises a gas stove panel and a burner 5′, wherein the burner 5′ comprises a base 50′, an inner ring fire cover 501′ arranged on the base 50′ and forming a central air mixing chamber 51′ with the base 50′, and an outer ring fire cover 502′ arranged on the base 50′, located on the periphery of the inner ring fire cover 501′ and forming an outer ring air mixing chamber 51′ with the base 50′, an air supplement cavity 503′ is formed between the central air mixing chamber 51′ and the outer ring air mixing chamber 51′, and a plurality of radial secondary air inlets 52′ for connecting the air supplement cavity 503′ with the outside are also provided on the base 50′ at intervals along the circumferential direction, the hood body 1 surrounds the burner 5′ with its inner edge and is placed on a liquid receiving pan 9′ on the gas stove panel, and the adjusting member 2′ is arranged adjacent to the secondary air inlet 52′. In order to make the adjusting member 2 also have the function of separating the secondary air inlet 52′, the baffle of the adjusting member 2 is lower than the highest point of the secondary air inlet 52′ but not lower than the lowest point of the secondary air inlet 52′. In order to increase the stability of the cover body 1 set on the stove, at least two supporting feet for supporting the cover body 1 extend downward from the inner edge of the cover body 1. In addition, when each adjustment strip 21′ of the adjusting member 2′ can partially enter the opening 11′ in the radial direction, the secondary air in the secondary air channel 8′ can be blocked from entering the opening 11′ from bottom to top. The main reason why the thermal efficiency of the gas stove using the energy collecting hood can be increased is that the energy collecting hood cover body 1 effectively separates the smoke and the supplementary secondary air, and also standardizes the flow direction of the secondary air, refer to Fig.17 , the adjustment strips 21' of the energy-gathering cover are synchronously extended from the outside to the inside into the opening 11', and the radial clearance δ between each adjustment strip 21' and the outer edge of the mixing chamber 51' in the burner 5' is 6.5 mm, which not only reduces the amount of secondary air supplemented to the outer ring mixing chamber 51, but also reduces the amount of secondary air supplemented to the inner ring mixing chamber 51'; when it is necessary to increase the amount of secondary air supplement, refer to Fig.18 For the sake of simplicity, only the secondary air intake of the secondary air channel 8 on one side (see the dotted arrow) and the path of the smoke inside the burner 5′ are shown. The adjustment strips 21′ of the energy-gathering cover are synchronously retracted radially from the inside to the outside to the opening 11′, and the radial gap δ between each adjustment strip 21′ and the outer edge of the mixing chamber 51′ in the burner 5′ is 10 mm.

Claims

1. A stove energy collecting hood, comprising an annular hood body (1), wherein the inner edge (11) of the hood body (1) is surrounded by an opening (2; 11') for secondary air to enter the inner periphery of the hood body (1), characterized in that The cover body (1) is provided with an adjusting member capable of changing the size of the opening (2; 11′); The regulating member can at least partially enter the opening (2; 11') in a radial direction, and the secondary air entering the opening (2; 11') is reduced by shielding the opening (2; 11'); The adjusting member can enter the opening (2; 11') in a rotational manner; The adjusting member comprises at least one baffle (4) which is arranged on the upper surface of the bottom of the cover body (1) in a rotating opening and closing manner; At least one outwardly protruding pivot (3) is arranged at intervals along the circumferential direction at the central position of the upper surface of the bottom of the cover body (1), and the root (41) of each baffle (4) is pivotally connected to the corresponding pivot (3) so that the root (41) of each baffle (4) enters the opening (2; 11′); The end portion (42) of each baffle (4) is also connected to a transmission member (5) capable of driving each baffle (4) to rotate synchronously; The transmission member (5) comprises a transmission convex strip (51) arranged on the periphery of each baffle (4) and rotating circumferentially along the upper surface of the bottom of the cover body (1), and a transmission bar (52) capable of driving the end (42) of the baffle (4) to rotate, and the transmission bar (52) can rotate along with the rotation of the transmission convex strip (51); The transmission bar (52) has a first blocking column (521) and a second blocking column (522) protruding outwardly on both sides, wherein the first blocking column (521) is connected to the transmission convex bar (51), and the second blocking column (522) is connected to the end (42) of each blocking piece (4), so that the transmission bar (52) can drive the root (41) of each blocking piece (4) to rotate relative to its own pivot (3) by applying force to the second blocking column (522) through the first blocking column (521).

2. A stove energy-gathering hood, comprising an annular hood body (1), wherein the inner edge (11) of the hood body (1) is surrounded by an opening (2; 11') for secondary air to enter the inner periphery of the hood body (1), characterized in that The cover body (1) is provided with an adjusting member capable of changing the size of the opening (2; 11'); the adjusting member can enter the opening (2; 11') in a radially sliding manner; The adjusting member comprises at least one outwardly protruding positioning block (10) circumferentially arranged along the upper surface of the bottom of the cover body (1) and a push plate (101) capable of sliding relative to each positioning block (10); a sliding groove (1011) capable of sliding relative to the positioning block is provided at the root of the push plate (101); and the adjusting member further comprises an actuator capable of driving each of the push plates (101) to slide synchronously.

3. The energy concentrating hood for a stove according to claim 2, characterized in that: The actuating member comprises at least one protrusion (201) arranged on the upper surface of the push plate (101) adjacent to the inner edge (11) of the cover body (1), at least one groove (202) arranged at intervals along the circumferential direction of the upper surface of the bottom of the cover body (1), a first convex ring (203) rotatably embedded in the groove (202), a second convex ring (204) arranged on the push plate (101), and a connecting rib (205) connecting the first convex ring (203) and the second convex ring (204), wherein the portion of the second convex ring (204) corresponding to each protrusion (201) has a plurality of steps (2041) which are gradually inclined outward from the inside to the outside, and when the first convex ring (203) drives the second convex ring (204) to rotate, the protrusion (201) can slide along the plurality of steps (2041) to achieve the step-by-step sliding of the push plate (101).

4. A stove energy-gathering hood, comprising an annular hood body (1), wherein the inner edge (11) of the hood body (1) is surrounded by an opening (2; 11') for secondary air to enter the inner periphery of the hood body (1), characterized in that The cover body (1) is provided with an adjusting member capable of changing the size of the opening (2; 11′); the adjusting member can change the size of the opening (2; 11′) by radially expanding and contracting relative to the opening (2; 11′); a trigger member (3′) is provided on the lower surface of the bottom of the cover body (1) for driving the adjusting member to radially expand and contract relative to the opening (2; 11′); and an elastic member (4′) acting on the adjusting member (2′), the elastic member (4′) causing the adjusting member (2′) to have a tendency to radially extend toward the center of the opening (2; 11′); The upper surface of the bottom of the cover body (1′) is provided with a connecting seat (12′) for connecting the elastic member (4′), the adjusting member can slide radially relative to the connecting seat (12′), one end of the elastic member (4′) is connected to the connecting seat (12′), and the other end of the elastic member (4′) is connected to the adjusting member (2′); The adjusting member comprises at least two adjusting strips (21′) arranged in a circle, the connecting seat (12′) is T-shaped, a transverse portion (121′) of the connecting seat (12′) is connected to one end of the elastic member (4′), and a vertical portion (122′) of the connecting seat (12′) extends into the adjusting strip (21′), and the adjusting strip (21′) can slide radially relative to the vertical portion (122′).

5. The energy concentrating hood for a stove according to claim 4, characterized in that: The adjustment strip (21') has a socket (211') for the vertical portion (122') to extend into, and two opposite side walls of the socket (211') are provided with guide grooves (212'), and correspondingly, two sides of the vertical portion (122') have guide rails (123') that match the guide grooves (212').

6. The energy concentrating hood for a stove according to claim 5, characterized in that: The touch member (3′) comprises a sliding portion capable of vertically sliding relative to the lower surface of the bottom of the cover body (1) and a touch member capable of triggering the adjustment strip (21′) to extend and retract relative to the opening (2; 11′). When the sliding portion moves vertically upward relative to the lower surface of the bottom of the cover body (1), the touch member can touch the adjustment strip (21′) and then trigger the elastic member (4′) to enter an energy storage state. When the elastic member (4′) is in an energy release state, the adjustment strip (21′) has a tendency to extend outside the opening (2; 11′).

7. The energy concentrating hood for a stove according to claim 6, characterized in that: The trigger member (3′) comprises an inverted "L"-shaped body (31′), a convex strip (13′) protrudes downward from the bottom of the cover body (1) adjacent to the body (31′), a vertical arm (311′) of the body (31′) can rotate relative to the convex strip (13′), and the vertical arm (311′) constitutes the sliding portion.

8. The energy concentrating hood for a stove according to claim 7, characterized in that: The upper end surface of the horizontal arm (312') of the body (31') is provided with a convex wall (313') protruding upward, and the convex wall (313') has an inclined surface (313a') tilted backward from top to bottom, and the convex wall (313') constitutes the triggering portion. Correspondingly, the bottom of the adjustment strip (21') has an inverted "V"-shaped notch (210'). When the convex strip (13') moves vertically upward relative to the lower surface of the bottom of the cover body (1), the convex wall (313') can trigger the adjustment strip (21') to slide along the convex wall (313') from top to bottom until it slides to the middle tip portion (210a') of the notch (210'), and the elastic member (4') then enters an energy storage state.

9. A gas stove using the stove energy-gathering hood according to any one of claims 1 to 8, comprising a gas stove panel and a burner, wherein the burner comprises an air mixing chamber and a secondary air inlet (74; 52') arranged on the air mixing chamber, and the hood (1) surrounds the burner with its inner edge (11) and is placed on the gas stove panel, characterized in that: The regulating member is arranged adjacent to the secondary air inlet (74; 52').

10. The gas stove according to claim 9, characterized in that: The adjusting member is lower than the highest point of the secondary air inlet (74; 52') but not lower than the lowest point of the secondary air inlet (74).

11. The gas stove according to claim 10, characterized in that: When the adjusting member of the cover body enters the opening (2; 11'), a radial clearance δ between the adjusting member and the outer edge of the mixing chamber in the burner is 6.5-10.5 mm.

12. The gas stove according to claim 9, 10 or 11, characterized in that: At least two supporting feet (14) for supporting the cover body (1) extend downward from the inner edge (11) of the cover body (1).

13. The gas stove according to claim 12, characterized in that: The peripheral wall of the cover body (1) is also provided with a notch (210') for the pot legs (8; 6') to be inserted into, the pot legs (8; 6') are connected via an annular ring (81; 7'), and adjacent pot legs (8; 6'), the annular ring (81; 7') and the peripheral wall of the cover body (1) together form a secondary air passage (9; 8') connecting the outside world and the secondary air inlet (74; 52'), and when the regulating member is at least partially able to enter the opening (2; 11') in a radial direction, the secondary air in the secondary air passage (9; 8') can be blocked from entering the opening (2; 11') from bottom to top.

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