Gas stove

Abstract

The utility model belongs to the technical field of combustion, and particularly discloses a gas stove. The gas stove comprises a multi-ring burner, a first gas valve and a second gas valve. The upper end of the multi-ring burner is provided with four gas cavities which are coaxially arranged at intervals, each gas cavity is correspondingly provided with at least one circle of fire holes, and the multi-ring burner is provided with an injection channel which is independently communicated with each gas cavity and corresponds to each gas cavity; the first gas valve is provided with two first gas supply channels, the two first gas supply channels communicate with the injection channels of the two gas cavities on the innermost side correspondingly, and the first gas valve regulates and controls gas flow on-off and gas flow of the first gas supply channels. The second gas valve is provided with two second gas supply channels, the two second gas supply channels communicate with the injection channels corresponding to the two gas cavities on the outermost side correspondingly, and the second gas valve regulates and controls gas flow on-off and gas flow of the second gas supply channels. According to the gas stove disclosed by the utility model, the firepower adjusting range can be increased, and the use flexibility of the gas stove and the heating uniformity of cooking utensils are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to combustion technical field especially relates to a gas -cooker. BACKGROUND

[0002] The gas -cooker is through the combustion of combustible gas to realize the heating of cooking utensil, thereby satisfy the cooking demand of common kitchen utensil, it usually is provided with the interval left and right two burner, and two burner places are installed with burner respectively, and each burner is controlled by gas valve to the fire power of combustion.

[0003] The conventional burner usually includes the furnace head, installs the gas distribution seat on the furnace head, covers the central fire cover in the middle part of gas distribution seat and the outer ring fire cover with coaxial interval setting in the outside of central fire cover. Inner ring fire cover has inner ring fire hole, and outer ring fire cover has outer ring fire hole;The furnace head has two injection channels, and two injection channels are respectively through the gas distribution cavity on the gas distribution seat to supply gas to inner ring fire cover and outer ring fire cover, and the gas valve controls the gas amount of injection of two injection channels, and controls the flame size at inner ring fire hole and outer ring fire hole.

[0004] The conventional gas -cooker when using, when by the maximum fire regulation to the minimum fire, the flame at outer ring fire hole gradually reduces until the outer ring fire hole does not have the flame combustion, then the flame at inner ring fire hole gradually reduces to realize the small fire cooking. This kind of fire regulation mode, the regulation range of fire reduces, is difficult to satisfy the demand of user to super fierce fire;Meanwhile, under the condition of small fire, only the middle part of cooking utensil is heated, causes the problem of uneven heating of food to appear, influence cooking experience. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem to provide a gas -cooker, it can effectively solve the problem of small fire regulation range and uneven heating under the condition of small fire of existing gas -cooker, improve the fire regulation range and fire regulation convenience of gas -cooker, promote cooking experience.

[0006] The above technical problem is solved by the following technical scheme:

[0007] A kind of gas -cooker, comprising:

[0008] Multi-ring burner, the upper end of the multi-ring burner has fire cover assembly, the fire cover assembly has four gas cavities sequentially coaxially separated by inside to outside, each gas cavity is correspondingly provided with at least one ring of fire hole communicated with it, the multi-ring burner is provided with the injection channel communicated with each gas cavity separately corresponding each gas cavity;

[0009] The first gas valve has two first gas supply channels, the two first gas supply channels are communicated with the two innermost gas cavity injection channels respectively, and the first gas valve controls the on-off and flow of the gas flow of the first gas supply channel.

[0010] The second gas valve has two second gas supply channels, the two second gas supply channels are communicated with the two outermost gas cavity injection channels respectively, and the second gas valve controls the on-off and flow of the gas flow of the second gas supply channel.

[0011] Compared with the background art, the gas stove has the beneficial effects that: the multi-ring burner with four gas cavities is arranged, and at least one ring of fire holes is arranged in each gas cavity, so that the flame burning range of the multi-ring burner is large, thereby meeting the demand of larger firepower required for cooking, and improving the cooking experience and cooking flexibility; meanwhile, the first gas valve is arranged to control the on-off and flow of the gas supply of the two inner gas cavities, the second gas valve is arranged to control the on-off and flow of the gas supply of the two outer gas cavities, so that the on-off and flow of the gas supply of each gas cavity can be adjusted, thereby the gas supply of each gas cavity can be controlled according to the required firepower for cooking, so that the firepower adjustment range is larger, and the firepower adjustment flexibility is higher; in addition, when smaller firepower is required for cooking, the central gas cavity can be selected to supply gas and / or the adjacent outermost gas cavity can be selected to supply gas according to the cooking demand, so that not only the middle part of the cooking utensil can be heated, but also the outer ring of the cooking utensil can be heated, thereby improving the heating uniformity of the cooking utensil; furthermore, the first gas valve and the second gas valve control the gas supply of the two injection channels respectively, so that the first gas valve and the second gas valve can adopt the gas valve structure of a conventional gas stove, without the need to improve the structure of the first gas valve and the second gas valve, thereby reducing the improvement cost of the gas stove and improving the use experience of the gas stove.

[0012] In one embodiment, the fire cover assembly comprises four fire covers which are sequentially and spacedly arranged from inside to outside, each of the fire covers has one gas cavity, and each of the fire covers is provided with at least one ring of fire holes;

[0013] Alternatively, the multi-ring burner comprises three fire covers which are sequentially and spacedly arranged from inside to outside, the outermost fire cover has two gas cavities, and the other two fire covers each have one gas cavity.

[0014] In one embodiment, the gas stove further comprises:

[0015] The inner ring ignition needle is arranged between the innermost fire cover and the adjacent fire cover.

[0016] The outer ring ignition needle is arranged outside the outermost fire cover, and the fire hole corresponding to the outermost gas cavity and the fire hole corresponding to the adjacent gas cavity are connected by a fire transmission structure for flame conduction. Alternatively, the outer ring ignition needle is arranged between the outermost fire cover and the adjacent fire cover.

[0017] In one of the embodiments, the gas stove further comprises:

[0018] The first thermocouple is arranged between the innermost fire cover and the adjacent fire cover.

[0019] The second thermocouple is arranged on the same side of the outermost fire cover as the outer ring ignition needle.

[0020] In one of the embodiments, the fire cover assembly comprises a center fire cover and at least two annular fire covers arranged coaxially and spaced apart from the center fire cover. The center fire cover has one gas cavity, and each annular fire cover has at least one gas cavity.

[0021] The multi-ring burner further comprises a burner head and a gas distribution seat. The burner head has the injection channel, a center channel, and three premixing cavities. The center channel and the three premixing cavities are respectively connected with one injection channel.

[0022] The gas distribution seat has at least three gas distribution cavities arranged sequentially from inside to outside. The three gas distribution cavities are respectively connected with the three premixing cavities.

[0023] The center fire cover is installed on the burner head or the gas distribution seat, and the gas cavity corresponding to the center fire cover is connected with the center channel. The annular fire cover is installed on the gas distribution seat, and the gas cavities are sequentially connected with the injection channel through the corresponding gas distribution cavities and premixing cavities.

[0024] In one of the embodiments, the upper end of the burner head is partially outwardly convexly provided with an extension boss. The extension boss has an inner cavity connected with one premixing cavity. In the horizontal projection plane, the projection of the outermost gas distribution cavity and the inner cavity at least partially overlap, and the outermost gas distribution cavity is connected with the corresponding premixing cavity through the inner cavity.

[0025] The outer ring ignition needle is arranged on the outer side of the extension boss.

[0026] In one of the embodiments, the upper end of the burner head is upwardly convexly provided with a center sleeve. The center channel penetrates the center sleeve upwardly.

[0027] The center of the gas distribution seat has a center through hole, and the center sleeve is arranged in the center through hole. The center fire cover is installed on the center sleeve.

[0028] The inner ring ignition needle is arranged outside the central sleeve part of the burner head and penetrates the central through hole.

[0029] In one of the embodiments, the burner head has four injection pipes, the inner cavity of each of the injection pipes forms an injection channel, at least two of the injection pipes are arranged in parallel and spaced apart in a first direction, and the rest of the injection pipes are arranged in a second direction, the first direction and the second direction are arranged at an angle.

[0030] In one of the embodiments, the upper end of each of the premixing cavities is provided with a vent hole, and the upper end of the burner head is provided with a first positioning convex ring around each of the vent holes.

[0031] The bottom of each of the gas distribution cavities is provided with an air inlet hole, and the bottom surface of the gas distribution seat is provided with a second positioning convex ring around each of the air inlet holes.

[0032] The first positioning convex ring and the second positioning convex ring are arranged one by one, and the first positioning convex ring and the second positioning convex ring are inserted and fitted to seal the communication between the vent hole and the corresponding air inlet hole.

[0033] In one of the embodiments, the gas stove further comprises a base, a two-ring burner and a third gas valve, the two-ring burner and the multi-ring burner are arranged in the left and right directions and spaced apart, the upper end of the two-ring burner is provided with an inner ring fire cover and an outer ring fire cover which are spaced apart, and the third gas valve has two third air supply channels, and the two third air supply channels are used for supplying air to the inner ring fire cover and the outer ring fire cover respectively. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 Part of the structure of the gas stove provided by the first embodiment of the utility model is shown in the top view.

[0035] Figure 2 The structure of the burner provided by the first embodiment of the utility model is shown in the structure diagram under one angle of view.

[0036] Figure 3 The structure of the burner provided by the first embodiment of the utility model is shown in the structure diagram under another angle of view.

[0037] Figure 4 The cross-sectional view of the burner provided by the first embodiment of the utility model is shown in one cross-section.

[0038] Figure 5 The split structure diagram of the burner provided by the first embodiment of the utility model is shown.

[0039] Figure 6A sectional view of the burner provided by the first embodiment of the present application in another cross section is shown in Figure 1B.

[0040] Figure 7 The first fixed plate 701 is provided with a plurality of first fixing holes 7011. Figure 6 A local enlarged view of I in Figure 1A is shown in Figure 1C.

[0041] Figure 8 A structure schematic view of the furnace end provided by the first embodiment of the present application is shown in Figure 2A.

[0042] Figure 9 A split structure schematic view of the furnace end provided by the first embodiment of the present application is shown in Figure 2B.

[0043] Figure 10 A structure schematic view of the gas distribution seat provided by the first embodiment of the present application is shown in Figure 3A.

[0044] Figure 11 A structure schematic view of the burner provided by the second embodiment of the present application is shown in Figure 4A.

[0045] Figure 12 A structure schematic view of the outermost annular fire cover provided by the second embodiment of the present application is shown in Figure 4B.

[0046] Figure 13 A structure schematic view of the gas distribution seat provided by the second embodiment of the present application is shown in Figure 5A.

[0047] Label explanation:

[0048] 100, multi-ring burner; 200, first gas valve; 300, second gas valve; 400, third gas valve; 500, two-ring burner; 600, inner ring ignition needle; 700, outer ring ignition needle; 701, first fixed plate; 800, first thermocouple; 801, second fixed plate; 900, second thermocouple; 1000, base; 1100, first gas supply pipeline; 1200, second gas supply pipeline; 1300, third gas supply pipeline; 1400, fourth gas supply pipeline;

[0049] 1, fire cover assembly; 11, center fire cover; 111, center gas cavity; 112, center fire hole; 12, first annular fire cover; 121, first annular gas cavity; 122, first fire hole; 13, second annular fire cover; 131, second annular gas cavity; 132, second fire hole; 133, third annular gas cavity; 134, third fire hole; 135, inner ring sub-fire cover; 136, outer ring sub-fire cover; 137, connecting bridge; 1371, upper groove; 138, fire gap;

[0050] 2, burner head; 21, burner base; 211, main base body; 2111, central passage; 2112, pre-mixing cavity; 2112a, first pre-mixing cavity; 2112b, second pre-mixing cavity; 2112c, third pre-mixing cavity; 212, connecting pipe part; 213, extension boss; 213a, first extension boss; 213b, second extension boss; 214, fixing lug part; 215, avoiding groove; 216, mounting boss part; 217, supporting leg part; 22, ejector pipe; 221, central ejector passage; 222, first ejector passage; 223, second ejector passage; 224, third ejector passage; 23, cover body; 231, cover plate part; 232, central sleeve part; 233, first positioning boss ring; 234, vent hole;

[0051] 3, gas distribution base; 31, main base part; 311, gas distribution cavity; 311a, first gas distribution cavity; 311b, second gas distribution cavity; 311c, third gas distribution cavity; 312, gas inlet hole; 313, central through hole; 32, second positioning boss ring; 33, positioning groove; 34, connecting part; 35, lower groove; 36, vent gap;

[0052] 4, flow equalizing plate. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0056] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] Embodiment one

[0058] The embodiment provides a gas stove which can enhance the firepower adjusting range of the gas stove, improve the use flexibility and use experience of the gas stove, and improve the heating uniformity of the gas stove on cooking utensils.

[0059] As shown in Figure 1 and Figure 4 , the gas stove comprises a cooking table, a multi-ring burner 100 and a control assembly. The cooking table comprises a panel and a base 1000 arranged below the panel, and the panel and the base 1000 jointly form a mounting cavity; the upper end of the multi-ring burner 100 is provided with a fire cap assembly 1, the fire cap assembly 1 has four gas cavities arranged coaxially and separated from inside to outside, at least one ring of fire holes corresponding to each gas cavity is arranged and communicated with the gas cavity, and the multi-ring burner 100 is provided with an injection channel communicated with each gas cavity corresponding to each gas cavity; the control assembly comprises a controller, a first gas valve 200 and a second gas valve 300, the first gas valve 200 has two first gas supply channels, the two first gas supply channels are respectively communicated with the injection channels of the two innermost gas cavities, and the first gas valve 200 controls the on-off and flow of the gas flow of the first gas supply channel; the second gas valve 300 has two second gas supply channels, the two second gas supply channels are respectively communicated with the injection channels corresponding to the two outermost gas cavities, and the second gas valve 300 controls the on-off and flow of the gas flow of the second gas supply channel. The first gas valve 200 and the second gas valve 300 are in communication connection with the controller.

[0060] The gas stove provided by the embodiment has the multi-ring burner 100 with four gas cavities, and at least one ring of fire holes is arranged corresponding to each gas cavity, so that the flame burning range of the multi-ring burner 100 is large, and the cooking experience and cooking flexibility are improved to meet the requirement of larger firepower for cooking. Meanwhile, the first gas valve 200 is arranged to control the on-off and flow of the gas supply of the two gas cavities on the inner side, and the second gas valve 300 is arranged to control the on-off and flow of the gas supply of the two gas cavities on the outer side, so that the on-off and flow of the gas supply of each gas cavity can be adjusted, the gas supply of each gas cavity can be controlled according to the required firepower for cooking, the firepower adjustment range is larger, and the firepower adjustment flexibility is higher. Moreover, when smaller firepower is required for cooking, the central gas cavity can be selected to supply gas and / or the outermost adjacent gas cavity can be selected to supply gas according to the cooking requirement, so that not only the middle part of the cooking utensil can be heated, but also the outer ring of the cooking utensil can be heated, and the heating uniformity of the cooking utensil is improved. Furthermore, the first gas valve 200 and the second gas valve 300 control the gas supply of the two injection channels respectively, so that the first gas valve 200 and the second gas valve 300 can adopt the gas valve structure of the conventional gas stove, the structure of the first gas valve 200 and the second gas valve 300 does not need to be improved, the improvement cost of the gas stove can be reduced, and the use experience of the gas stove is improved.

[0061] In an embodiment, the gas stove further comprises a two-ring burner 500 and a third gas valve 400. The two-ring burner 500 is installed on the base 1000 and is arranged in the left-right direction with the multi-ring burner 100. The two-ring burner 500 has an inner ring fire cover and an outer ring fire cover coaxially and spacedly arranged outside the inner ring fire cover. The two-ring burner 500 is provided with an inner ring injection channel corresponding to the inner ring fire cover and an outer ring injection channel corresponding to the outer ring fire cover. The third gas valve 400 has two third gas supply channels, which control the on-off and flow of the gas supply of the inner ring injection channel and the outer ring injection channel. That is, one burner of the gas stove is capable of enhancing firepower, and the other burner of the gas stove adopts a conventional burner structure, so that the structure of the gas stove is simplified, the processing cost of the gas stove is reduced, and various application requirements of the gas stove are better met while meeting the requirement of enhancing firepower of the gas stove.

[0062] It is worth noting that the structure of the two-ring burner 500, the cooperation structure of the two-ring burner 500 and the third gas valve 400, and the installation structure of the two-ring burner 500 on the cooking table can be set according to the prior art, which is not the focus of the present application, and will not be described again.

[0063] It is worth noting that the specific structure of the first gas valve 200 and the second gas valve 300, their installation structure on the stove, and the flow control and flow regulation principle of the corresponding channels can be set with reference to the existing technology. This is not the focus of this utility model and will not be elaborated here.

[0064] like Figures 2 to 4 As shown, in one embodiment, the flame cap assembly 1 includes a central flame cap 11 and at least two annular flame caps that are coaxially spaced from the central flame cap 11. The central flame cap 11 has an air chamber, and each annular flame cap has at least one air chamber.

[0065] In one embodiment, the flame cap assembly 1 includes three flame caps spaced apart from the inside out. The outermost flame cap has two air chambers, and the other two flame caps each have one air chamber. That is, the flame cap assembly 1 includes a central flame cap 11 and two annular flame caps, with the outermost annular flame cap having two separated air chambers. In another embodiment, the flame cap assembly 1 includes four flame caps spaced apart from the inside out. Each flame cap has one air chamber, and each flame cap has at least one ring of flame holes, thereby reducing the manufacturing difficulty of the flame caps. The innermost flame cap is the central flame cap 11, and the remaining flame caps are annular flame caps.

[0066] Specifically, the air chamber in the central flame cap 11 is the central air chamber 111, and the flame hole on the central flame cap 11 is the central flame hole 112. Preferably, multiple central flame holes 112 are arranged at intervals along the circumference of the central flame cap 11. The two annular flame caps are the first annular flame cap 12 and the second annular flame cap 13. The air chamber of the first annular flame cap 12 is the first annular air chamber 121, and its flame hole is the first flame hole 122, which communicates with the first annular air chamber 121. The second annular flame cap 13 is provided with a second annular air chamber 131 and a third annular air chamber 133 separated by inner and outer rings. The inner ring wall or the inner top wall of the second annular flame cap 13 is provided with a second flame hole 132 that communicates with the second annular air chamber 131, and the outer ring wall of the second annular flame cap 13 is provided with a third flame hole 134 that communicates with the third annular air chamber 133. In one embodiment, the first flame hole 122, the second flame hole 132, and the third flame hole 134 are all provided in multiples along the circumferential direction of the corresponding flame cap. In other embodiments, the first flame hole 122, the second flame hole 132, and / or the third flame hole 134 are circumferential seam structures.

[0067] In an embodiment, the gas stove further comprises an inner ring ignition needle 600 and an outer ring ignition needle 700, both of which are in communication connection with the controller. The inner ring ignition needle 600 is installed between the innermost fire cap and the adjacent fire cap, for controlling the ignition and combustion of the flame at the center fire cap 11 and the first ring fire cap 12; the outer ring ignition needle 700 is arranged outside the outermost fire cap, and the flame hole corresponding to the outermost gas cavity and the flame hole corresponding to the adjacent gas cavity are connected by a flame conduction structure.

[0068] Specifically, the upper end of the inner ring ignition needle 600 is located between the center fire cap 11 and the first ring fire cap 12, for directly controlling the ignition and combustion of the gas at the center flame hole 112 and the first flame hole 122; the outer ring ignition needle 700 is located outside the second ring fire cap 13, for directly controlling the ignition and combustion of the gas at the third flame hole 134.

[0069] By arranging the inner ring ignition needle 600 and the outer ring ignition needle 700, the ignition control of the inner two fire caps and the outer two fire caps can be better satisfied, thereby simplifying the arrangement of the flame conduction structure on the multi-ring burner 100 and improving the ignition convenience; at the same time, by arranging the inner ring ignition needle 600 and the outer ring ignition needle 700, it is more conducive to regulating the combustion state of each flame hole corresponding to the gas cavity. In another embodiment, the fire cap is provided with four, and the outer ring ignition needle 700 is located between the outermost fire cap and the adjacent fire cap.

[0070] In another embodiment, a flame conduction structure is arranged between the innermost gas cavity and the adjacent gas cavity, and a flame conduction structure is arranged between the outermost gas cavity and the adjacent gas cavity, and the two middle gas cavities are respectively arranged on the different fire caps arranged at intervals. The ignition needle is only provided with one, and is located between the two fire caps. Specifically, a flame conduction structure is arranged between the center fire cap 11 and the first ring fire cap 12, and a flame conduction structure is arranged between the second ring gas cavity 131 and the third ring gas cavity 133. The ignition needle is arranged between the first ring fire cap 12 and the second ring fire cap 13.

[0071] In an embodiment, the fire cap is provided with three, and the flame conduction structure comprises a flame conduction slot 138 arranged at the upper end of the outermost ring fire cap. The flame conduction slot 138 extends along the radial direction of the ring fire cap, and the outer end of the flame conduction slot 138 extends to the flame hole corresponding to the outermost gas cavity, and the inner end of the flame conduction slot 138 extends to the flame hole corresponding to the adjacent gas cavity.

[0072] Specifically, the second annular fire cover 13 comprises an outer ring inner wall and an outer ring outer wall which are arranged in an interval between the inner and outer, and further comprises an outer ring upper wall which is connected between the top ends of the outer ring inner wall and the outer ring outer wall, and the lower side of the outer ring upper wall extends downwardly with a partition wall, the partition wall is arranged in an interval between the outer ring inner wall and the outer ring outer wall, and the partition wall, the outer ring inner wall and the outer ring upper wall jointly form a second annular air cavity 131, and the partition wall, the outer ring outer wall and the outer ring upper wall jointly form a third annular air cavity 133. The ignition gap 138 is arranged on the outer ring upper wall and extends along the radial direction of the second annular fire cover 13, and the inner end of the ignition gap 138 extends to the second fire hole 132, and the second end of the ignition gap 138 is arranged at the third fire hole 134.

[0073] It is worth noting that the ignition structure between the two adjacent fire covers in the prior art, or the ignition structure between the two air cavities arranged in an interval between the inner and outer, can be applied to the utility model, and the specific structure of the ignition structure is not limited and described in detail.

[0074] In an embodiment, the gas stove further comprises a first thermocouple 800 and a second thermocouple 900, the first thermocouple 800 is arranged between the innermost fire cover and the adjacent fire cover, and the second thermocouple 900 is located on the same side of the outermost fire cover as the outer ring ignition needle 700. The first thermocouple 800 and the second thermocouple 900 are both in communication connection with the controller. By arranging the first thermocouple 800 and the second thermocouple 900, the control of the fire adjustment of the gas stove is more beneficial. Specifically, the first thermocouple 800 is located between the center fire cover 11 and the first annular fire cover 12, and the second thermocouple 900 is located on the outer side of the second annular fire cover 13.

[0075] The multi-ring burner 100 further comprises a burner head 2 and a gas distribution seat 3, the burner head 2 has a center channel 2111, a plurality of injection channels and three premixing cavities 2112, the center channel 2111 and the three premixing cavities 2112 are respectively in individual communication with one injection channel; the gas distribution seat 3 has at least three gas distribution cavities 311 which are arranged in an interval between the inner and outer, and the three gas distribution cavities 311 are respectively in corresponding communication with the three premixing cavities 2112; the center fire cover 11 is installed on the burner head 2 or the gas distribution seat 3, and the corresponding center gas cavity 111 of the center fire cover 11 is in communication with the center channel 2111, and the annular fire cover is installed on the gas distribution seat 3 and the gas cavities are in communication with the injection channels through the corresponding gas distribution cavities 311 and premixing cavities 2112.

[0076] That is, the mixed gas of the gas and air introduced by the injection channel enters the corresponding premixing cavity 2112 or the center channel 2111 for preliminary mixing, and then the mixed gas in the center channel 2111 is supplied to the innermost fire cover, and the premixed gas in the remaining premixing cavities 2112 is respectively supplied to the corresponding fire cover through the corresponding gas distribution cavities 311.

[0077] Specifically, the burner head 2 has four injection channels, which are a center injection channel 221, a first injection channel 222, a second injection channel 223 and a third injection channel 224 respectively, three premixing chambers 2112 are a first premixing chamber 2112a, a second premixing chamber 2112b and a third premixing chamber 2112c respectively, and three gas distribution chambers 311 are a first gas distribution chamber 311a, a second gas distribution chamber 311b and a third gas distribution chamber 311c respectively. The center injection channel 221, the center channel 2111, the center gas chamber 111 and the center burner hole 112 are sequentially communicated, the first injection channel 222, the first premixing chamber 2112a, the first gas distribution chamber 311a, the first annular gas chamber 121 and the first burner hole 122 are sequentially communicated, the second injection channel 223, the second premixing chamber 2112b, the second gas distribution chamber 311b, the second annular gas chamber 131 and the second burner hole 132 are sequentially communicated, and the third injection channel 224, the third premixing chamber 2112c, the third gas distribution chamber 311c, the third annular gas chamber 133 and the third burner hole 134 are sequentially communicated.

[0078] Further, as shown in Figure 1 and Figure 2 , a first gas supply channel is communicated with the center injection channel 221 through a first gas supply pipeline 1100 to supply gas to the center injection channel 221, and another first gas supply channel is communicated with the first injection channel 222 through a second gas supply pipeline 1200 to supply gas to the first injection channel 222; a second gas supply channel is communicated with the second injection channel 223 through a third gas supply pipeline 1300 to supply gas to the second annular gas chamber 131, and another second gas supply channel is communicated with the third injection channel 224 through a fourth gas supply pipeline 1400 to supply gas to the third annular gas chamber 133.

[0079] As shown in Figures 3 to 4 , the burner head 2 includes a burner base 21 and four injection pipes 22 extending outwardly along the outer side wall of the burner base 21, the inner cavity of each injection pipe 22 forms an injection channel, and the burner base 21 has the center channel 2111 and the premixing chamber 2112 described above. The communication structure between the injection pipe 22 and the gas supply channel can be set according to the prior art, and the present embodiment does not limit and elaborate on this.

[0080] In an embodiment, the center sleeve part 232 is protrudingly arranged at the upper end of the burner head 2, and the center channel 2111 vertically penetrates the center sleeve part 232; the center of the gas distribution base 3 has a center through hole 313, the center sleeve part 232 is arranged in the center through hole 313, and the center cap 11 is installed at the upper end of the center sleeve part 232, so that the center gas chamber 111 of the center cap 11 is directly communicated with the center channel 2111, thereby simplifying the structure of the gas distribution base 3 and the structure of the multi-ring burner 100.

[0081] In one embodiment, the inner ring ignition needle 600 is installed on the upper end of the burner head 2 and passes upward through the central through hole 313, that is, the inner ring ignition needle 600 is installed on the inner side of the gas distribution seat 3 to improve the installation convenience of the inner ring ignition needle 600. Further, a clearance groove 215 is provided on one side of the burner head 2, the clearance groove 215 penetrates the bottom of the burner head 2, and the lower end of the inner ring ignition needle 600 extends into the clearance groove 215. Further, the first thermocouple 800 vertically passes through the central through hole 313 and the lower end of the first thermocouple 800 extends into the clearance groove 215 to facilitate the wiring of the first thermocouple 800 to the gas stove controller.

[0082] The upper side wall of the clearance groove 215 is provided with a first mounting hole and a second mounting hole. The inner ring ignition needle 600 passes through the first mounting hole, and the first thermocouple 800 passes through the second mounting hole. The outer side wall of the inner ring ignition needle 600 is provided with a first fixing plate 701, and the outer side wall of the first thermocouple 800 is provided with a second fixing plate 801. The first fixing plate 701, the second fixing plate 801 and the burner head 2 are fastened by fasteners passing through the three to reduce the number of fasteners.

[0083] Furthermore, a mounting protrusion 216 protrudes from the upper side wall of the clearance groove 215. A first mounting hole passes through the mounting protrusion 216. A first fixing plate 701 is attached to the mounting protrusion 216, and a second fixing plate 801 is sandwiched between the first fixing plate 701 and the groove wall of the clearance groove 215, thereby improving installation stability. In other embodiments, the second fixing plate 801 may be attached to the mounting protrusion 216, while the first fixing plate 701 may be sandwiched between the second fixing plate 801 and the groove wall of the clearance groove 215.

[0084] like Figures 5 to 7 As shown, to improve the ease of installation of the outer ring ignition needle 700, an extension boss 213 is provided on the upper end of the burner head 2. The extension boss 213 has an inner cavity that communicates with a premixing chamber 2112. On the horizontal projection plane, the projection of the outermost gas distribution chamber 311 at least partially overlaps with the projection of the inner cavity, and the outermost gas distribution chamber 311 communicates with the corresponding premixing chamber 2112 through the inner cavity. The outer ring ignition needle 700 is installed on the outer side of the extension boss 213. The outer ring ignition needle 700 is located on the outer side of the outermost annular burner cap.

[0085] The above configuration facilitates the installation of the outer ring ignition needle 700 on the outermost burner cap and avoids interference between the outer ring ignition needle 700 and the gas distribution seat 3. At the same time, the outermost gas distribution chamber 311 is connected to the premixing chamber 2112 through the cavity of the extended boss 213. While realizing the connection between the outermost gas distribution chamber 311 and the corresponding premixing chamber 2112, the distance between the burner head 2 and the center line of the burner cap at other positions is reduced, thereby reducing the overall size and weight of the burner head 2.

[0086] Specifically, both the second premixing chamber 2112b and the third premixing chamber 2112c have an extension boss 213 on their outer sides. The extension boss 213 on the outer side of the second premixing chamber 2112b is a first extension boss 213a, which has a first inner cavity communicating with the second premixing chamber 2112b. The extension boss 213 on the outer side of the third premixing chamber 2112c is a second extension boss 213b, which has a second inner cavity communicating with the third premixing chamber 2112c. The outer diameter of the second extension boss 213b is larger than the outer diameter of the first extension boss 213a. The second gas distribution chamber 311b communicates with the second premixing chamber 2112b through the first inner cavity, and the third gas distribution chamber 311c communicates with the third premixing chamber 2112c through the second inner cavity.

[0087] Furthermore, a fixing lug 214 extends outward from the outer side of the extension boss 213, and the outer ring ignition needle 700 passes through and is fastened to the fixing lug 214. Specifically, the fixing lug 214 is located on the outer side of the second extension boss 213b. Furthermore, the second thermocouple 900 passes through and is fastened to the fixing lug 214. This arrangement facilitates the installation of the outer ring ignition needle 700 and the second thermocouple 900, and also allows the lower ends of the outer ring ignition needle 700 and the second thermocouple 900 to be located outside the furnace base 21, facilitating electrical connection with the controller.

[0088] like Figures 8 to 10 As shown, to improve the ease of setting up the burner head 2, in one embodiment, at least two ejector tubes 22 extend along a first direction and are arranged side-by-side with intervals, while the remaining ejector tubes 22 extend along a second direction, with the first direction and the second direction forming an angle. This avoids the problem of the burner head 2 having a large size in the direction of the four ejector tubes 22 being arranged side-by-side, thus reducing the size of the burner head 2 and improving the ease of setting up the burner head 2 structure.

[0089] In one embodiment, three ejector tubes 22 are arranged side-by-side and spaced apart, all extending along a first direction, while another ejector tube 22 extends along a second direction, preferably perpendicular to the first direction. Specifically, the ejector tubes 22 corresponding to the central ejector channel 221, the first ejector channel 222, and the third ejector channel 224 are arranged side-by-side, with the central ejector channel 221 located between the first ejector channel 222 and the third ejector channel 224.

[0090] Further, the three ejection pipes 22 arranged side by side are connected by the connecting portions 34 to form an integral body, so as to ensure the relative position reliability between the three ejection pipes 22. Among the three ejection pipes 22 arranged side by side, the outer two ejection pipes 22 are connected with leg portions which extend downward in a direction away from the middle ejection pipe 22, and the lower ends of the leg portions are fastened to the base 1000 of the cooking bench. Further, among the three ejection pipes 22 arranged side by side, the ejection passage of the middle ejection pipe 22 communicates with the central passage 2111.

[0091] In an embodiment, the ejection pipe 22 is detachably connected with the furnace seat 21, so as to reduce the processing difficulty of the furnace head 2. Further, the furnace seat 21 comprises a seat main portion 211 and a connecting pipe portion 212 protruding from the outer wall of the seat main portion 211, the connecting pipe portion 212 is arranged corresponding to the ejection pipe 22, and the ejection pipe 22 is sealingly inserted into the corresponding connecting pipe portion 212 to realize installation positioning through plug-in cooperation, so as to improve the installation reliability.

[0092] In an embodiment, the three gas distribution cavities 311 of the gas distribution seat 3 are all annular structures arranged coaxially, and the three gas distribution cavities 311 are arranged in sequence from inside to outside, and each gas distribution cavity 311 is vertically opposite to the corresponding gas cavity of the outer ring flame cover, so as to facilitate the communication between the gas cavity and the corresponding gas distribution cavity 311. That is, the first annular gas cavity 121 is vertically opposite and communicated with the first gas distribution cavity 311a, the second annular gas cavity 131 is vertically opposite and communicated with the second gas distribution cavity 311b, and the third annular gas cavity 133 is vertically opposite and communicated with the third gas distribution cavity 311c.

[0093] In order to simplify the structure of the gas distribution seat 3, the gas distribution seat 3 comprises a main seat portion 31, the main seat portion 31 comprises a plurality of annular wall portions arranged coaxially in sequence from inside to outside, and the lower ends of some adjacent two annular wall portions are connected with an annular bottom plate portion, the annular bottom plate portion and the corresponding two annular wall portions jointly form a gas distribution cavity 311, and the inner hole of the central annular wall portion forms a central through hole 313. The connecting portions 34 are arranged between the adjacent two annular wall portions which are not connected with the annular bottom plate portion, and the connecting portions 34 are arranged in multiple along the circumferential direction of the annular wall portion, so as to form an integral structure of the gas distribution seat 3 while reducing the weight of the gas distribution seat 3. In other embodiments, the gas distribution seat 3 can also comprise a bottom plate portion, and the lower ends of all the annular wall portions are connected to the bottom plate portion, so that the gas distribution cavities 311 are formed between the bottom plate portion and the adjacent two annular wall portions.

[0094] To improve the convenience of the communication between the gas distribution cavity 311 and the premixing cavity 2112, in an embodiment, the upper end cavity wall of each premixing cavity 2112 is provided with a gas passage hole 234, and the upper end of the burner head 2 is provided with a first positioning convex ring 233 around each gas passage hole 234; the bottom of each gas distribution cavity 311 is provided with an air inlet hole 312, and the bottom surface of the gas distribution seat 3 is provided with a second positioning convex ring 32 around each air inlet hole 312; the first positioning convex ring 233 and the second positioning convex ring 32 are arranged one by one, and the first positioning convex ring 233 and the second positioning convex ring 32 are inserted and sleeved to realize the sealed communication between the gas passage hole 234 and the corresponding air inlet hole 312. Thus, the installation and positioning of the gas distribution seat 3 and the burner head 2 can be realized through the insertion and sleeving of the first positioning convex ring 233 and the second positioning convex ring 32, the installation precision of the two is ensured, and the installation structure of the two is simplified.

[0095] In an embodiment, a positioning groove 33 is formed between the second positioning convex ring 32 and the lower end surface of the main seat part 31, the air inlet hole 312 is arranged at the groove bottom of the positioning groove 33, and the first positioning convex ring 233 is inserted into the positioning groove 33 and abuts against the groove bottom of the positioning groove 33, so that the installation and positioning can be further realized, and the communication and sealing between the air inlet hole 312 and the gas passage hole 234 are facilitated. In another embodiment, the lower end surface of the second positioning convex ring 32 can abut against the upper end surface of the burner head 2.

[0096] To reduce the overall size of the burner head 2, in an embodiment, the plurality of premixing cavities 2112 are arranged at intervals around the axis of the central sleeve part 232, so that the problems of the large size and the complex structure of the burner head 2 caused by the interval arrangement of the plurality of premixing cavities 2112 from inside to outside are avoided, and the structure of the burner head 2 is simplified. Further, the first premixing cavity 2112a, the third premixing cavity 2112c and the second premixing cavity 2112b are arranged in sequence around the central sleeve part 232.

[0097] To reduce the processing difficulty of the burner head 2, in an embodiment, each premixing cavity 2112 is provided with an upper opening, and the burner head 2 further comprises a cover body 23, which is arranged on the upper end of the furnace seat 21 to block the opening of the premixing cavity 2112. The cover body 23 is provided with the first positioning convex ring 233. Specifically, the cover body 23 comprises a cover plate part 231, the center of the cover plate part 231 is provided with the central sleeve part 232, the upper side of the cover plate part 231 is provided with the first positioning ring part, and the gas passage hole 234 penetrates the first positioning ring part and the cover plate part 231. The cover body 23 and the furnace seat 21 can be connected by screws or other detachable connection modes.

[0098] In an embodiment, each gas distribution cavity 311 is provided with an air inlet hole 312. To avoid the problem that the gas flow is small at a position far from the air inlet hole 312, each gas distribution cavity 311 is provided with a flow uniformizing plate 4. The flow uniformizing plate 4 is arranged above the air inlet hole 312 and extends away from the air inlet hole 312 at both ends, so as to guide the mixed gas flow to flow along the circumference of the gas distribution cavity 311 to each position of the gas distribution cavity 311. The flow uniformizing plate 4 is provided with air holes, so that part of the mixed gas flow can flow directly upward through the air holes to the gas cavity.

[0099] To realize the installation of the burner head 2 on the base 1000, the lower end of the seat main part 211 is connected with a support leg part 217. The support leg part 217 is arranged at intervals along the circumference of the seat main part 211, and at least two support leg parts 217 are arranged. The end of the support leg part 217 away from the seat main part 211 is detachably connected with the base 1000.

[0100] Embodiment Two

[0101] The embodiment provides a gas stove, and the basic structure of the gas stove provided by the embodiment is the same as that of the first embodiment, and only the part of the multi-ring burner 100 is different. The embodiment will not be described repeatedly for the same structure as the above-mentioned embodiment.

[0102] As shown in Figures 11 to 13 In the embodiment, the second ring-shaped fire cover 13 includes a first inner ring sub-fire cover 135 and an outer ring sub-fire cover 136 arranged at intervals inside and outside. The first inner ring sub-fire cover 135 is provided with a second ring-shaped gas cavity 131 and a second fire hole 132, and the outer ring sub-fire cover 136 is provided with a third ring-shaped gas cavity 133 and a third fire hole 134.

[0103] In the embodiment, the outer ring ignition needle 700 is arranged outside the outer ring sub-fire cover 136, and the mounting mode can be arranged according to the above-mentioned embodiment. In other embodiments, the outer ring ignition needle 700 can also be arranged between the outer ring sub-fire cover 136 and the inner ring sub-fire cover 135.

[0104] To realize the ignition between the outer ring sub-ignition cover 136 and the inner ring sub-ignition cover 135, in the embodiment, the ignition structure comprises a connecting bridge 137 connected between the inner ring sub-ignition cover 135 and the outer ring sub-ignition cover 136, the connecting bridge 137 is provided with a communication passage, or the connecting bridge 137 cooperates with the gas distribution seat 3 to form a communication passage, the communication passage communicates with the third annular gas cavity 133 of the outer ring sub-ignition cover 136, or the communication passage communicates with the third gas distribution cavity 311c. The upper end of the connecting bridge 137 is provided with an ignition gap 138, the ignition gap 138 extends along the radial direction of the second annular ignition cover 13, and the outer end of the ignition gap 138 extends to the vicinity of the third fire hole 134, and the inner end of the ignition gap 138 extends to the vicinity of the second fire hole 132. Thus, it is beneficial to guide the flame at the third fire hole 134 to the second fire hole 132 through the ignition gap 138, and realize the ignition and combustion of the gas at the second fire hole 132.

[0105] Further, the connecting bridge 137 is formed with a lower-opened upper groove 1371, the gas distribution seat 3 is provided with a lower groove 35 which is upper-opened, the upper groove 1371 is arranged opposite to the lower groove 35 and communicates with the lower groove 35, and the lower groove 35 and the upper groove 1371 jointly form a communication passage. The lower groove 35 is provided with a gas passage gap 36 opposite to one side cavity wall of the third gas distribution cavity 311c, and the gas passage gap 36 communicates the lower groove 35 and the third gas distribution cavity 311c. Specifically, the inner side wall of the third gas distribution cavity 311c and the outer side wall of the second gas distribution cavity 311b are connected with a connecting portion 34, and the connecting portion 34 is provided with the lower groove 35.

[0106] In the specific contents of the above specific embodiments, any inconsistent combination of technical features can be combined, in order to make the description simple, not all possible combinations of the above technical features are described, however, as long as the combination of these technical features does not exist, it should be considered that it is within the scope of the description.

[0107] The specific contents of the above specific embodiments only express several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A gas hob, characterized in that The application relates to a multi-ring burner (100) with a fire cap assembly (1) at the upper end of the multi-ring burner (100), wherein the fire cap assembly (1) has four air cavities arranged coaxially and spaced apart from inside to outside, and each air cavity is provided with at least one ring of fire holes in communication with the air cavity; the multi-ring burner (100) is provided with an injection channel in communication with each air cavity respectively; a first gas valve (200) is provided with two first gas supply channels in communication with the injection channels of the two innermost air cavities respectively, and the first gas valve (200) controls the on-off and flow rate of the gas flow in the first gas supply channels; a second gas valve (300) is provided with two second gas supply channels in communication with the injection channels of the two outermost air cavities respectively, and the second gas valve (300) controls the on-off and flow rate of the gas flow in the second gas supply channels. The fire cap assembly (1) comprises four fire caps arranged coaxially and spaced apart from inside to outside, each fire cap has one air cavity, and each fire cap is provided with at least one ring of fire holes; or the fire cap assembly (1) comprises three fire caps arranged coaxially and spaced apart from inside to outside, the outermost fire cap has two air cavities, and the other two fire caps have one air cavity respectively. The gas stove further comprises: an inner ring ignition needle (600) arranged between the innermost fire cap and the adjacent fire cap; 2. Gas hob according to claim 1, characterized in that an outer ring ignition needle (700) arranged outside the outermost fire cap, and the fire holes corresponding to the two outermost air cavities and the fire holes corresponding to the adjacent air cavities are connected through a fire transmission structure for flame conduction; or the outer ring ignition needle (700) is arranged between the outermost fire cap and the adjacent fire cap. The gas stove further comprises:

3. Gas hob according to claim 2, characterized in that a first thermocouple (800) arranged between the innermost fire cap and the adjacent fire cap; a second thermocouple (900) arranged on the same side of the outermost fire cap as the outer ring ignition needle (700). The fire cap assembly (1) comprises a center fire cap (11) and at least two annular fire caps arranged coaxially and spaced apart from the center fire cap (11), the center fire cap (11) has one air cavity, and each annular fire cap has at least one air cavity; 4. Gas hob according to claim 3, characterized in that The multi-ring burner (100) further comprises a burner head (2) and a gas distribution seat (3), the burner head (2) has a center channel (2111), a plurality of injection channels and three premixing cavities (2112), the center channel (2111) and the three premixing cavities (2112) are in communication with one injection channel respectively; The gas distribution seat (3) has at least three gas distribution cavities (311) arranged coaxially and spaced apart from inside to outside, and the three gas distribution cavities (311) are in communication with the three premixing cavities (2112) respectively. ​ 5. Gas hob according to any one of claims 1 to 4, characterized in that ​ ​ ​ The central fire cover (11) is installed on the burner head (2) or the gas distribution seat (3), and the gas cavity corresponding to the central fire cover (11) is communicated with the central channel (2111), and the annular fire cover is installed on the gas distribution seat (3), and the gas cavity is communicated with the injection channel in sequence through the corresponding gas distribution cavity (311) and the premixing cavity (2112).

6. Gas hob according to claim 5, characterized in that The upper end of the burner head (2) is partially outwardly protruding and provided with an extension boss (213), the extension boss (213) has an inner cavity communicated with a premixing cavity (2112), and in the horizontal projection plane, the projection of the outermost gas distribution cavity (311) and the inner cavity at least partially overlaps, and the outermost gas distribution cavity (311) is communicated with the corresponding premixing cavity (2112) through the inner cavity. The outer side of the extension boss (213) is installed with an outer ring ignition needle (700), and the outer ring ignition needle (700) is located outside the outermost annular fire cover.

7. The gas hob according to claim 5, characterized in that The upper end of the burner head (2) has a central sleeve portion (232) protruding upward, and the central channel (2111) penetrates the central sleeve portion (232) upward; The center of the gas distribution seat (3) has a central through hole (313), and the central sleeve portion (232) is arranged in the central through hole (313), and the central fire cover (11) is installed on the central sleeve portion (232); The burner head (2) is installed with an inner ring ignition needle (600) outside the central sleeve portion (232), and the inner ring ignition needle (600) is arranged in the central through hole (313).

8. The gas hob according to claim 5, characterized in that The burner head (2) has four injection pipes (22), and the inner cavity of each injection pipe (22) forms an injection channel, at least two injection pipes (22) extend along a first direction and are arranged side by side and spaced apart, and the remaining injection pipes (22) extend along a second direction, and the first direction and the second direction are arranged at an angle.

9. The gas hob according to claim 5, characterized in that The upper end cavity wall of each premixing cavity (2112) is provided with a gas vent hole (234), and the upper end of the burner head (2) is protrudingly provided with a first positioning convex ring (233) around each gas vent hole (234); The bottom of each gas distribution cavity (311) is provided with an air inlet hole (312), and the bottom surface of the gas distribution seat (3) is protrudingly provided with a second positioning convex ring (32) around each air inlet hole (312); The first positioning convex ring (233) and the second positioning convex ring (32) are arranged one by one, and the first positioning convex ring (233) and the second positioning convex ring (32) are inserted and sleeved to realize sealed communication between the gas vent hole (234) and the corresponding air inlet hole (312).

10. Gas hob according to any one of claims 1 to 4, characterized in that The gas stove further comprises a base (1000), a double-ring burner (500) and a third gas valve (400), the double-ring burner (500) and the multi-ring burner (100) are both mounted on the base (1000) and are arranged at intervals in the left-right direction, the upper end of the double-ring burner (500) is provided with an inner ring fire cover and an outer ring fire cover which are sleeved at intervals from inside to outside, and the third gas valve (400) is provided with two third gas supply channels, and the two third gas supply channels are respectively used for supplying gas to the inner ring fire cover and the outer ring fire cover.

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