Burner head, up-draft burner and gas stove

Abstract

The present invention provides a burner head, an upward air inlet burner and a gas stove, which relate to the technical field of cooking appliances. The burner head includes an outer ring structure, and the outer ring structure includes an outer ring outer peripheral wall, an outer ring inner peripheral wall, a connecting plate, an outer ring ejector pipe and a baffle plate. The outer ring outer peripheral wall is sleeved outside the outer ring inner peripheral wall at intervals. The connecting plate is arranged in a ring shape and is connected between the outer ring outer peripheral wall and the outer ring inner peripheral wall. A baffle plate is arranged above a partial position in the circumferential direction of the connecting plate, and a premixing chamber is formed between the baffle plate and the connecting plate, the outer ring outer peripheral wall and the outer ring inner peripheral wall. By arranging the baffle plate above the connecting plate, a partial space above the connecting plate forms a premixing chamber. After the gas and air are preliminarily mixed in the outer ring ejector pipe, they flow into the premixing chamber from the air outlet of the outer ring ejector pipe. After being fully mixed in the premixing chamber, they then flow into the outer ring distribution air passage through the outer ring flow port, ensuring the combustion performance of the burner, with a simple structure and convenient processing.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking stoves, and more particularly to a burner head, an up-draft burner and a gas stove. Background Art

[0002] Currently, the gas stoves on the market mainly use down-draft burners. As consumers' requirements for the comfort of using gas stoves are getting higher and higher, especially for the temperature requirements of the gas stove body, up-draft gas stoves have begun to appear on the market.

[0003] The outer ring of the burner head of the existing up-draft burner generally includes an outer ring outer peripheral wall, an outer peripheral inner peripheral wall, and an annular bottom plate connected between the outer ring inner peripheral wall and the outer ring outer peripheral wall. An outer ring distribution air passage is formed above the annular bottom plate. Specifically, the outer ring air intake mode of the burner head is generally divided into two types. One is that a mixing chamber is provided at the rear end of the outer ring injection pipe. The gas and air entering the outer ring injection pipe are mixed in the mixing chamber and then flow into the outer ring distribution air passage, and then enter the outer ring burner cap. In this way, the mixing chamber is usually divided into two parts, one part is connected to the burner head, and the other part is connected to the outer ring injection pipe. When actually producing the burner, the two parts need to be aligned and sealed, and the assembly process is complex and the precision requirement is high, which affects the production efficiency. The other is that the outer ring injection pipe is directly communicated with the outer ring distribution air passage, that is, no mixing chamber is provided. Although this method is convenient for processing, since the gas and air cannot be fully mixed, the combustion condition is poor, which affects the performance of the burner.

[0004] It can be seen that how to overcome the above defects of the existing up-draft burner to take into account the combustion performance of the burner on the basis of convenient processing is an urgent technical problem to be solved. Summary of the Invention

[0005] The purpose of the present invention is to provide a burner head, an up-draft burner and a gas stove to solve the technical problem that it is difficult for the existing up-draft burner to take into account the combustion performance of the burner on the basis of convenient processing.

[0006] The burner head provided by the present invention includes an outer ring structure, and the outer ring structure includes an outer ring outer peripheral wall, an outer ring inner peripheral wall, a connecting plate, an outer ring injection pipe and a baffle;

[0007] The outer ring outer peripheral wall is spacedly sleeved outside the outer ring inner peripheral wall. The connecting plate is arranged in a ring shape. The connecting plate is connected between the outer ring outer peripheral wall and the outer ring inner peripheral wall. The baffle is arranged above a partial position in the circumferential direction of the connecting plate, and a premixing chamber is formed between the baffle and the connecting plate, the outer ring outer peripheral wall and the outer ring inner peripheral wall;

[0008] Above the connecting plate and the baffle plate, an outer ring distribution air passage is formed between the outer peripheral wall and the inner peripheral wall of the outer ring. The air outlet of the outer ring ejector tube communicates with the premixing chamber, and an outer ring flow port communicating with the outer ring distribution air passage is arranged on the premixing chamber.

[0009] Further, the connecting plate includes a first plate portion, a second plate portion, a third plate portion, and a fourth plate portion that are sequentially connected end to end in a ring shape. The inner edges of the first plate portion, the second plate portion, the third plate portion, and the fourth plate portion are all hermetically connected to the inner peripheral wall of the outer ring, and the outer edges of the first plate portion, the second plate portion, the third plate portion, and the fourth plate portion are all hermetically connected to the outer peripheral wall of the outer ring.

[0010] The plate surface of the first plate portion and the plate surface of the third plate portion are arranged substantially horizontally, and the installation height of the first plate portion is higher than the installation height of the third plate portion. The second plate portion and the fourth plate portion extend vertically. The upper ends of the second plate portion and the fourth plate portion are respectively connected to both ends of the first plate portion, and the lower ends of the second plate portion and the fourth plate portion are respectively connected to both ends of the third plate portion. The baffle plate is arranged above the third plate portion.

[0011] Further, the second plate portion and the fourth plate portion are inclined and arranged to gradually approach the third plate portion in the direction from top to bottom.

[0012] Further, the outer peripheral wall of the outer ring includes an outer peripheral wall body, and a peripherally integrated outer peripheral wall extension portion extends downward at a position corresponding to the third plate portion at the lower end of the outer peripheral wall body.

[0013] The inner peripheral wall of the outer ring includes an inner peripheral wall body, and a peripherally integrated inner peripheral wall extension portion extends downward at a position corresponding to the third plate portion at the lower end of the inner peripheral wall body.

[0014] The first plate portion is connected between the inner peripheral wall body and the outer peripheral wall body. The vertical extension directions of the inner peripheral wall extension portion corresponding to both ends of the second plate portion and the fourth plate portion are respectively consistent with the extension directions of the second plate portion and the fourth plate portion. The vertical extension directions of the outer peripheral wall extension portion corresponding to both ends of the second plate portion and the fourth plate portion are consistent with the extension directions of the second plate portion and the fourth plate portion. The second plate portion, the third plate portion, and the fourth plate portion are connected between the inner peripheral wall extension portion and the outer peripheral wall extension portion.

[0015] Further, the ejecting end of the outer ring ejector tube is arranged below the first plate portion. The air outlet end of the outer ring ejector tube extends horizontally from the first plate portion towards the direction where the third plate portion is located, and the air outlet end of the outer ring ejector tube passes through the inner peripheral wall of the outer ring and enters the premixing chamber.

[0016] Further, the position of the first plate portion corresponding to the outer ring ejector tube forms the upper side tube wall of the outer ring ejector tube at this position;

[0017] and / or;

[0018] The position of the inner peripheral wall of the outer ring corresponding to the outer ring ejector tube forms the inner side tube wall of the outer ring ejector tube at this position.

[0019] Further, the inner peripheral wall of the outer ring corresponding to the position of the air outlet of the outer ring ejector tube close to the center of the burner head is the inner peripheral wall of the outer ring at the corresponding position, and the outer side tube wall of the air outlet of the outer ring ejector tube far from the center of the burner head extends into the premixing chamber.

[0020] Further, the number of the outer ring ejector tubes is two, and the two outer ring ejector tubes are arranged at intervals in an axisymmetric manner on both sides of the inner ring structure of the burner head.

[0021] Further, one of the outer ring ejector tubes is located on the side where the second plate portion is located, and the other outer ring ejector tube is located on the side where the fourth plate portion is located.

[0022] Further, a partition plate is arranged in the premixing chamber. The lower end of the partition plate is hermetically connected to the third plate portion, and the inner end and the outer end of the partition plate are respectively connected to the inner peripheral wall of the outer ring and the outer peripheral wall of the outer ring, so as to divide the premixing chamber into a first premixing groove and a second premixing groove which are horizontally arranged at intervals. The upper ends of the first premixing groove and the second premixing groove are communicated;

[0023] The first premixing groove and the second premixing groove are respectively communicated with the two outer ring ejector tubes in a one-to-one correspondence.

[0024] Further, the inner peripheral wall of the outer ring, the connecting plate, the outer peripheral wall of the outer ring and the outer ring ejector tube are integrally formed.

[0025] Further, the outer ring ejector tube is arranged at the bottom of the outer peripheral wall of the outer ring, and the edge of the outer ring ejector tube is located inside the contour line of the outer peripheral wall of the outer ring;

[0026] and / or;

[0027] The axis of the internal channel of the outer ring ejector tube extends in a straight line along the horizontal direction;

[0028] and / or;

[0029] The upper edge of the air outlet of the outer ring ejector tube is flush with the lower surface of the baffle or located below the lower surface of the baffle.

[0030] Further, a first outer ring flow port is arranged on the baffle;

[0031] and / or;

[0032] Second outer circulation ports are respectively formed between the baffle plate and the first plate portion and the second plate portion;

[0033] and / or;

[0034] The baffle plate is arranged at an interval from the outer peripheral wall of the outer ring to form a third outer circulation port.

[0035] Furthermore, the burner head further includes an inner ring structure which is arranged inside the inner peripheral wall of the outer ring.

[0036] For the upwind burner provided by the present invention, the burner head provided by the present invention.

[0037] Furthermore, the upwind burner further includes a nozzle seat, an inner ring burner cap and an outer ring burner cap;

[0038] The outer ring burner cap is buckled on the outer ring structure, the inner ring burner cap is buckled on the inner ring structure of the burner head, and the burner head is arranged on the nozzle seat.

[0039] The gas stove provided by the present invention includes the upwind burner provided by the present invention.

[0040] The burner head provided by the present invention includes an outer ring structure, and the outer ring structure includes an outer peripheral wall of the outer ring, an inner peripheral wall of the outer ring, a connecting plate, an outer ring injection pipe and a baffle plate; the outer peripheral wall of the outer ring is sleeved outside the inner peripheral wall of the outer ring at an interval, the connecting plate is arranged in a ring shape, the connecting plate is connected between the outer peripheral wall of the outer ring and the inner peripheral wall of the outer ring, a baffle plate is arranged above a partial position in the circumferential direction of the connecting plate, and a premixing chamber is formed between the baffle plate and the connecting plate, the outer peripheral wall of the outer ring and the inner peripheral wall of the outer ring; above the connecting plate and the baffle plate, an outer ring distribution air passage is formed between the outer peripheral wall of the outer ring and the inner peripheral wall of the outer ring, the air outlet of the outer ring injection pipe is communicated with the premixing chamber, and an outer circulation port communicated with the outer ring distribution air passage is arranged on the premixing chamber. By arranging the baffle plate above the connecting plate, a partial space above the connecting plate is formed into a premixing chamber. After the gas and air are preliminarily mixed in the outer ring injection pipe, they flow into the premixing chamber from the air outlet of the outer ring injection pipe, and after being fully mixed in the premixing chamber, they then flow into the outer ring distribution air passage through the outer circulation port, ensuring the combustion performance of the burner. At the same time, the premixing chamber is formed by the cooperation of the baffle plate with the existing inner peripheral wall of the outer ring, the outer peripheral wall of the outer ring and the connecting plate (i.e., the bottom plate) of the burner head, which is convenient for processing and consumes less materials; and, since the baffle plate is arranged above the connecting plate, that is, the baffle plate is arranged on one side of the premixing chamber with the outer circulation port, even if there is a deviation during the installation of the baffle plate, the gap formed by it can be used as the outer circulation port, so the installation accuracy requirement for the baffle plate is relatively low, which is more convenient for mechanized production and processing and improves the processing efficiency. It can be seen that the burner head of the present invention can take into account the combustion performance of the burner on the basis of convenient processing, reducing the production cost and the user's use cost.

[0041] The upwind burner provided by the present invention includes the burner head provided by the present invention, which has the same beneficial effects as the burner head provided by the invention and will not be elaborated here.

[0042] The gas stove provided in this embodiment includes the upwind burner provided by the present invention. The beneficial effects that can be achieved by the gas stove in this embodiment are the same as those of the burner head and the upwind burner provided in this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0044] Figure 1 Schematic diagram of a perspective view of the upwind burner provided in an embodiment of the present invention;

[0045] Figure 2 Schematic diagram of another perspective view of the upwind burner provided in an embodiment of the present invention;

[0046] Figure 3 Schematic cross-sectional view of the upwind burner provided in an embodiment of the present invention cut along the vertical central plane of the outer ring ejector tube;

[0047] Figure 4 Schematic diagram of a perspective view of the burner head provided in an embodiment of the present invention;

[0048] Figure 5 For Figure 4 Schematic diagram of the burner head with the baffle omitted;

[0049] Figure 6 For Figure 4 Schematic diagram of the burner head shown cut along the vertical central plane of the outer ring ejector tube;

[0050] Figure 7 For Figure 6 Front view schematic diagram;

[0051] Figure 8 Schematic diagram of another perspective view of the burner head provided in an embodiment of the present invention;

[0052] Figure 9 Schematic bottom view of the burner head provided in an embodiment of the present invention;

[0053] Figure 10 Schematic top view of the burner head provided in an embodiment of the present invention.

[0054] Icon: 1 - burner head; 11 - outer ring structure; 111 - outer ring ejector tube; 1112 - inner side wall; 1113 - outer side wall; 1114 - ejecting end; 1115 - air outlet; 112 - inner peripheral wall of outer ring; 113 - outer peripheral wall of outer ring; 1131 - main body of peripheral wall; 1132 - extended part of peripheral wall; 114 - baffle; 1141 - first outer ring flow port; 1142 - second outer ring flow port; 1143 - third outer ring flow port; 115 - premixing chamber; 1151 - partition board; 1152 - first premixing groove; 1153 - second premixing groove; 116 - outer ring distribution air duct; 117 - connecting plate; 1171 - first plate part; 1172 - second plate part; 1173 - third plate part; 1174 - fourth plate part; 12 - inner ring structure; 121 - air passage; 2 - outer ring burner cap; 3 - inner ring burner cap; 4 - nozzle seat; 41 - outer ring gas path; 411 - outer ring nozzle. Detailed implementation manners

[0055] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] Embodiment

[0057] As Figures 1 to 10 As shown, this embodiment provides a burner head 1, which includes an outer ring structure 11. The outer ring structure 11 includes an outer peripheral wall 113 of the outer ring, an inner peripheral wall 112 of the outer ring, a connecting plate 117, an outer ring ejector tube 111 and a baffle 114. The outer peripheral wall 113 of the outer ring is sleeved outside the inner peripheral wall 112 of the outer ring at intervals. The connecting plate 117 is arranged in a ring shape and is connected between the outer peripheral wall 113 of the outer ring and the inner peripheral wall 112 of the outer ring. A baffle 114 is arranged above a partial position in the circumferential direction of the connecting plate 117, and a premixing chamber 115 is formed between the baffle 114, the connecting plate 117, the outer peripheral wall 113 of the outer ring and the inner peripheral wall 112 of the outer ring. Above the connecting plate 117 and the baffle 114, an outer ring distribution air duct 116 is formed between the outer peripheral wall 113 of the outer ring and the inner peripheral wall 112 of the outer ring. The air outlet 1115 of the outer ring ejector tube 111 is communicated with the premixing chamber 115, and an outer ring flow port communicated with the outer ring distribution air duct 116 is arranged on the premixing chamber 115.

[0058] Among them, the outer peripheral wall 113 of the outer ring, the inner peripheral wall 112 of the outer ring, and the connecting plate 117 can all have the same structure as the existing burner head 1. Further improved forms can also be adopted to increase the volume of the premixing chamber 115. There are various ways to set the outer ring flow port. For example, a notch is directly set on the baffle 114 as the outer ring flow port, which is defined as the first outer ring flow port 1141 for convenient description; it can also be that an outer ring flow port is formed by arranging a gap between the baffle 114 and the outer peripheral wall 113 of the outer ring, and this outer ring flow port is defined as the third outer ring flow port 1143; that is, it can also be that an outer ring flow port is formed by a gap between the baffle 114 and the connecting plate 117 in the horizontal direction, and this outer ring flow port is defined as the second outer ring flow port 1142. The outer ring flow port can select one or more of the first outer ring flow port 1141, the second outer ring flow port 1142, and the third outer ring flow port 1143. In a preferred manner, the outer ring flow port includes the first outer ring flow port 1141 and the second outer ring flow port 1142; in another preferred manner, the outer ring flow port includes the first outer ring flow port 1141, the second outer ring flow port 1142, and the third outer ring flow port 1143. It can be understood that in the above two preferred manners, the air and gas mixture in the premixing chamber 115 can be better distributed into the outer ring distribution airway 116, so that the mixture flowing into the outer ring burner cap 2 can discharge air along the circumferential direction of the outer ring burner cap 2. This embodiment mainly takes the outer ring flow port including the first outer ring flow port 1141, the second outer ring flow port 1142, and the third outer ring flow port 1143 as an example for description.

[0059] In the burner head 1 of this embodiment, by arranging a baffle 114 above the connecting plate 117, a part of the space above the connecting plate 117 forms a premixing chamber 115. After the gas and air are preliminarily mixed in the outer ring injection pipe 111, they flow into the premixing chamber 115 from the air outlet 1115 of the outer ring injection pipe 111. After being fully mixed in the premixing chamber 115, they then flow into the outer ring distribution airway 116 through the outer ring flow port, ensuring the combustion performance of the burner. At the same time, the premixing chamber 115 is formed by the cooperation of the baffle 114 with the inner peripheral wall 112 of the outer ring, the outer peripheral wall 113 of the outer ring, and the connecting plate 117 (i.e., the bottom plate) of the existing burner head 1, which is convenient for processing and consumes less materials; moreover, since the baffle 114 is arranged above the connecting plate 117, that is, the baffle 114 is arranged on the side of the premixing chamber 115 with the outer ring flow port, even if there is a deviation during the installation of the baffle 114, the gap formed can be used as the outer ring flow port. Therefore, the installation accuracy requirement for the baffle 114 is relatively low, which is more convenient for mechanized production and processing, improving the processing efficiency. It can be seen that the burner head 1 of this embodiment can take into account the combustion performance of the burner on the basis of convenient processing, reducing the production cost and the user's usage cost.

[0060] This embodiment provides an inner peripheral wall 112 of the outer ring, an outer peripheral wall 113 of the outer ring, and a connecting plate 117 that can improve the mixing effect of gas and air.

[0061] First of all, it should be noted that the inner peripheral wall 112, the outer peripheral wall 113 and the connecting plate 117 of the outer ring can still be integrally formed.

[0062] Specifically, the connecting plate 117 includes a first plate portion 1171, a second plate portion 1172, a third plate portion 1173 and a fourth plate portion 1174 that are sequentially connected end to end to form a ring. The inner edges of the first plate portion 1171, the second plate portion 1172, the third plate portion 1173 and the fourth plate portion 1174 are all hermetically connected to the inner peripheral wall 112 of the outer ring, and the outer edges of the first plate portion 1171, the second plate portion 1172, the third plate portion 1173 and the fourth plate portion 1174 are all hermetically connected to the outer peripheral wall 113 of the outer ring. The plate surfaces of the first plate portion 1171 and the third plate portion 1173 are arranged substantially horizontally, the setting height of the first plate portion 1171 is higher than the setting height of the third plate portion 1173, the second plate portion 1172 and the fourth plate portion 1174 extend vertically, the upper ends of the second plate portion 1172 and the fourth plate portion 1174 are respectively connected to both ends of the first plate portion 1171, and the lower ends of the second plate portion 1172 and the fourth plate portion 1174 are respectively connected to both ends of the third plate portion 1173. The baffle 114 is arranged above the third plate portion 1173.

[0063] Furthermore, the second plate portion 1172 and the fourth plate portion 1174 are inclined so as to gradually approach the third plate portion 1173 in the direction from top to bottom.

[0064] The outer peripheral wall 113 of the outer ring includes an outer peripheral wall body 1131, and an integrally formed outer peripheral wall extension portion 1132 extends downward from the lower end of the outer peripheral wall body 1131 at a position corresponding to the third plate portion 1173. The inner peripheral wall 112 of the outer ring includes an inner peripheral wall body, and an integrally formed inner peripheral wall extension portion extends downward from the lower end of the inner peripheral wall body at a position corresponding to the third plate portion 1173. The first plate portion 1171 is connected between the inner peripheral wall body and the outer peripheral wall body 1131. The vertical extension directions of the inner peripheral wall extension portion corresponding to both ends of the second plate portion 1172 and the fourth plate portion 1174 are respectively consistent with the extension directions of the second plate portion 1172 and the fourth plate portion 1174, and the vertical extension directions of the outer peripheral wall extension portion 1132 corresponding to both ends of the second plate portion 1172 and the fourth plate portion 1174 are respectively consistent with the extension directions of the second plate portion 1172 and the fourth plate portion 1174. Corresponding to the second plate portion 1172, the third plate portion 1173 and the fourth plate portion 1174 are connected between the inner peripheral wall extension portion and the outer peripheral wall extension portion 1132. Specifically, as Figure 8As shown, both ends of the outer peripheral wall extension 1132 are inclined in the same inclined direction as the second plate portion 1172 and the fourth plate portion 1174, so that both ends of the outer peripheral wall extension 1132 are exactly connected to the outer edge of the second plate portion 1172 and the outer edge of the fourth plate portion 1174. Both ends of the inner peripheral wall extension are inclined in the same inclined direction as the second plate portion 1172 and the fourth plate portion 1174, so that both ends of the inner peripheral wall extension are exactly connected to the inner edge of the second plate portion 1172 and the inner edge of the fourth plate portion 1174.

[0065] As Figures 5 to 8 shown, the first plate portion 1171 forms a small semi-circular ring, the first plate portion 1171 is arranged substantially horizontally, and the inner edge and the outer edge are respectively connected to the inner peripheral wall body and the outer peripheral wall body 1131. The lower right end of the inner peripheral wall body extends downward to form an inner peripheral wall extension, and the lower right end of the outer peripheral wall body 1131 extends downward to form an outer peripheral wall extension 1132; the third plate portion 1173 is arranged as a small semi-circular shape substantially horizontally, and the inner edge and the outer edge are respectively connected to the lower ends of the inner peripheral wall extension and the outer peripheral wall extension 1132. Since the installation heights of the first plate portion 1171 and the third plate portion 1173 are different, the second plate portion 1172 and the fourth plate portion 1174 need to have a vertical extension component to be able to connect the two ends of the first plate portion 1171 and the third plate portion 1173 into one body. Specifically, the second plate portion 1172 and the fourth plate portion 1174 are inclined and are arranged substantially symmetrically at both ends of the first plate portion 1171 and the third plate portion 1173. The plate surfaces of the second plate portion 1172 and the fourth plate portion 1174 face the premixing chamber 115, and the lower ends are closer to the side where the third plate portion 1173 is located. The baffle 114 is arranged horizontally and is spaced above the third plate portion 1173. Since the third plate portion 1173, the inner peripheral wall extension and the outer peripheral wall extension 1132 are all equivalent to the downwardly protruding parts, a relatively large premixing chamber 115 protruding downward is formed at the air outlet 1115 of the outer ring ejector tube 111.

[0066] It can be understood that, as Figure 3 and Figure 10 the arrows shown, the gas ejected from the outer ring nozzle 411 of the nozzle seat 4 entrains the primary air into the outer ring ejector tube 111, is preliminarily mixed in the outer ring ejector tube 111 and flows into the premixing chamber 115. The premixing chamber 115 has a relatively large space, which can reduce the flow rate of the gas-air mixture, reduce the kinetic energy of the combustible mixture gas, and promote the full mixing of the gas and the air, thereby improving the combustion efficiency.

[0067] It should be noted that the inner peripheral wall body and the inner peripheral wall extension are only distinguished by parts for the convenience of description, and they are actually a component with an integral structure; similarly, the outer peripheral wall body 1131 and the outer peripheral wall extension 1132 are of an integral structure and are actually a component. The first plate portion 1171, the second plate portion 1172, the third plate portion 1173, and the fourth plate portion 1174 are also components with an integral structure. During actual processing, the outer ring inner peripheral wall 112, the outer ring inner peripheral wall 112, and the connecting plate 117 can be integrally formed by metal injection molding.

[0068] In this embodiment, an outer ring flow port is provided on the premixing chamber 115, so it is equivalent to a semi-closed premixing chamber 115. The baffle 114 divides the semi-closed premixing chamber 115 and the outer ring distribution air passage 116 into sections. Specifically, the outer diameter of the baffle 114 is smaller than the size of the outer ring outer peripheral wall 113, and a third outer ring flow port 1143 is formed therebetween; at the same time, an inner notch is provided on the baffle 114, and a first outer ring flow port 1141 is formed with the outer ring inner peripheral wall 112. At the same time, a second outer ring flow port 1142 is formed between the baffle 114 and the inclined wall surface of the outer ring structure 11, that is, between the second plate portion 1172 and the third plate portion 1173. The combustible mixed gas in the premixing chamber 115 flows into the outer ring distribution air passage 116 through the first outer ring flow port 1141, the second outer ring flow port 1142, and the third outer ring flow port 1143. The setting of multiple outer ring flow ports improves the consistency of the airflow pressure field in the outer ring distribution air passage 116, makes the airflow flow rate of each fire hole on the outer ring burner cap 2 uniform, and thus realizes a uniform and stable combustion condition.

[0069] In this embodiment, the baffle 114 is fixedly connected to the outer ring inner peripheral wall 112, and specifically, it can be integrally formed, welded, or clamped. It should be noted here that when the third outer ring flow port 1143 is not provided, the baffle 114 can also be fixedly connected to the outer ring outer peripheral wall 113.

[0070] In this embodiment, the ejection end 1114 of the outer ring ejector tube 111, that is, the intake end, is arranged below the first plate portion 1171. The outlet end of the outer ring ejector tube 111 horizontally extends from the first plate portion 1171 towards the direction where the third plate portion 1173 is located, and the outlet end of the outer ring ejector tube 111 passes through the outer ring inner peripheral wall 112 and enters the premixing chamber 115.

[0071] Furthermore, the upper edge of the outlet 1115 of the outer ring ejector tube 111 is flush with the lower surface of the baffle 114 or is located below the lower surface of the baffle 114 to prevent the baffle 114 from blocking the outlet 1115 of the outer ring ejector tube 111 and ensure that the mixed gas at the outlet 1115 can smoothly enter the premixing chamber 115 along the outer ring ejector tube 111.

[0072] Specifically, such as Figure 7As shown, the injection port of the outer ring injection pipe 111 is located at the bottom of the first plate portion 1171. The outer ring injection pipe 111 extends horizontally along the inner peripheral wall 112 of the outer ring. Its air outlet 1115 is tangent to, that is, flush with, the bottom surface of the baffle 114 and is connected to the premixing chamber 115.

[0073] In this embodiment, the outer ring injection pipe 111 and components such as the outer peripheral wall 113 of the outer ring and the inner peripheral wall 112 of the outer ring are also integrally formed. Moreover, the outer ring injection pipe 111 can share part of the structure with the outer peripheral wall 113 of the outer ring and the inner peripheral wall 112 of the outer ring to save consumables. Specifically, the position of the first plate portion 1171 corresponding to the outer ring injection pipe 111 forms the upper side pipe wall of the outer ring injection pipe 111 at this position; and / or; the position of the inner peripheral wall 112 of the outer ring corresponding to the outer ring injection pipe 111 forms the inner side pipe wall 1112 of the outer ring injection pipe 111 at this position.

[0074] As Figure 8 shown, the upper side of the position of the outer ring injection pipe 111 below the first plate portion 1171 is actually open. The side wall of this opening is hermetically and fixedly connected to the lower surface of the first plate portion 1171, so that the lower surface of the first plate portion 1171 correspondingly forms the upper side pipe wall of the outer ring injection pipe 111. That is, the first plate portion 1171 and the outer ring injection pipe 111 share part of the material.

[0075] As Figure 5 shown, when the outer ring injection pipe 111 passes through the inner peripheral wall 112 of the outer ring, the inner side pipe wall 1112 of its pipe wall directly adopts the corresponding part of the inner peripheral wall 112 of the outer ring.

[0076] It can be understood that the pipe wall of the outer ring injection pipe 111 is connected to the first plate portion 1171 and the inner peripheral wall 112 of the outer ring, and the two share part of the material. The structure is more compact, which can reduce the use of materials while meeting the design dimensions and lower the manufacturing cost. In addition, the outer ring injection pipe 111 is integrally formed with the outer ring structure 11, increasing the strength of the burner head 1 and improving the reliability and service life of the burner.

[0077] Furthermore, as Figure 5 shown, the inner side pipe wall 1112 of the air outlet 1115 of the outer ring injection pipe 111 close to the center of the burner head 1 is the inner peripheral wall 112 of the corresponding position, and the outer side pipe wall 1113 of the air outlet 1115 of the outer ring injection pipe 111 far from the center of the burner head 1 extends into the premixing chamber 115.

[0078] Specifically, as Figure 5As shown, the inner side wall 1112 of the air outlet 1115 of the outer ring ejector tube 111 is connected to the inner peripheral wall 112 of the outer ring, and its outer side wall 1113 passes through the inner peripheral wall 112 of the outer ring and extends into the interior of the premixing chamber 115. Compared with the elliptical outlet formed by completely opening on the inner peripheral wall 112 of the outer ring for the air outlet 1115 of the outer ring ejector tube 111, in this embodiment, the length difference between the inner side wall 1112 and the outer side wall 1113 of the air outlet 1115 is shortened. That is, the distance between the two parts of the air outlet 1115 of the outer ring ejector tube 111 that are farthest apart in the axial direction of the outer ring ejector tube 111 is less than the distance between the two parts of the cross-section where the outer ring ejector tube 111 and the cylindrical surface where the inner peripheral wall 112 of the outer ring coincide and are farthest apart in the axial direction of the outer ring ejector tube 111. This increases the overall length of the outer ring ejector tube 111 and at the same time reduces the outlet cross-sectional area of the outer ring ejector tube 111, thereby improving the consistency of the air flow velocity at the air outlet 1115 of the outer ring ejector tube 111, reducing the effect of air flow turbulence at the outlet of the upper air inlet burner ejector tube, reducing the recirculation zone, promoting the entrainment of the primary air, and thus achieving complete combustion.

[0079] It should be noted that the end of the inner side wall 1112 of the outer ring ejector tube 111 in this embodiment is located outside the end of the outer side wall 1113. That is, in the radial direction of the burner head 1, the end of the inner side wall 1112 is farther from the center of the burner head 1, so that the air outlet 1115 of the outer ring ejector tube 111 is an ellipse facing the outer peripheral wall 113 of the outer ring. In other words, the outer side wall 1113 of the outer ring ejector tube 111 does not extend too far into the premixing chamber 115 to avoid occupying the volume of the premixing chamber 115, affecting the mixing effect, and avoiding the formation of a dead zone for the flow of the mixed gas between the outer side wall 1113 and the inner peripheral wall 112 of the outer ring.

[0080] As Figure 8 and Figure 9 As shown, the number of the outer ring ejector tubes 111 is two, and the two outer ring ejector tubes 111 are symmetrically arranged at intervals on both sides of the inner ring structure 12 of the burner head 1. Specifically, the first plate portion 1171 and the third plate portion 1173 are oppositely arranged, one of the outer ring ejector tubes 111 is located on the side where the second plate portion 1172 is located, and the other outer ring ejector tube 111 is located on the side where the fourth plate portion 1174 is located. Each outer ring ejector tube 111 extends along the horizontal direction, and the air outlet 1115 of the outer ring ejector tube 111 is horizontally arranged and communicates with the premixing chamber 115.

[0081] The outer ring injection pipes 111 are symmetrically arranged on both sides of the inner ring structure 12, with a gap therebetween to form an air passage 121. Air flows from the bottom of the burner head 1 through the air passage 121 to the peripheries of the outer ring burner cap 2 and the inner ring burner cap 3, providing secondary air for the combustion of the gas on the burner cap. This structure can increase the supply of secondary air in the middle part, improve the completeness of the central flame combustion, thereby reducing exhaust gas emissions and improving the thermal efficiency.

[0082] Furthermore, in order to enable the mixture gas to flow better into the outer ring distribution air passage 116. As Figure 5 and Figure 6 shown, a partition plate 1151 is arranged in the premixing chamber 115. The lower end of the partition plate 1151 is hermetically connected to the third plate portion 1173. The inner end and the outer end of the partition plate 1151 are respectively connected to the inner peripheral wall 112 and the outer peripheral wall 113 of the outer ring, so as to divide the premixing chamber 115 into a first premixing tank 1152 and a second premixing tank 1153 which are horizontally spaced apart. The upper end of the partition plate 1151 is spaced from the baffle plate 114, so that the upper ends of the first premixing tank 1152 and the second premixing tank 1153 are communicated; the first premixing tank 1152 and the second premixing tank 1153 are respectively communicated with two outer ring injection pipes in one-to-one correspondence.

[0083] Specifically, the outer ring injection pipe 111 located on one side of the second plate portion 1172 is communicated with the first premixing tank 1152 on this side, and the outer ring injection pipe 111 located on one side of the fourth plate portion 1174 is communicated with the second premixing tank 1153 on this side. The arrangement of the partition plate 1151 can prevent the mutual cancellation of the flow power between the mixture gases ejected from the two outer ring injection pipes 111. And when the mixture gas is ejected from the outer ring injection pipe 111, under the action of the partition plate 1151, it is more beneficial for the mixture gas to spread radially outward after passing through the outer ring distribution air passage 116, which is beneficial for the burner to form a larger flame.

[0084] It should be noted that the partition plate 1151 can divide the third plate portion 1173 into two sections of structures, that is, the third plate portion 1173 has a connection mark at the position of the partition plate 1151.

[0085] For better aesthetics, usually the outer ring injection pipe 111 is arranged at the bottom of the outer peripheral wall 113 of the outer ring, and the projection of the outer ring injection pipe 111 on the horizontal plane is within the projection range of the outer peripheral wall 113 of the outer ring on the horizontal plane. That is, the edge of the outer ring injection pipe 111 is within the contour line of the outer peripheral wall 113 of the outer ring, that is, it does not exceed the edge of the outer peripheral wall 113 of the outer ring.

[0086] Among them, in this embodiment, the axis of the internal channel of the outer ring ejector tube 111 extends linearly along the horizontal direction, which is beneficial for the mixed gas in the outer ring ejector tube 111 to be ejected horizontally into the premixing chamber 115. After the horizontally ejected mixed gas is mixed in the premixing chamber 115, it turns into an upward moving air flow and flows into the outer ring distribution air passage 116. Since the air flow needs to change direction, the air flow can be more fully mixed in the mixing chamber.

[0087] The burner head 1 of this embodiment can also be used in combination with the inner ring structure 12. Specifically, the burner head 1 further includes an inner ring structure 12, and the inner ring structure 12 is arranged inside the inner peripheral wall 112 of the outer ring.

[0088] To sum up, the outer ring ejector tube 111 of the burner head 1 in this embodiment is designed on both sides of the burner head 1, which reduces the use of materials, enhances the strength of the burner head 1, and improves the reliability life of the combustion system; increases the secondary air supply in the middle, improves the completeness of the central flame combustion, thereby reducing exhaust gas emissions and enhancing the thermal efficiency. The premixing chamber 115 can reduce the flow rate of the gas-air mixture, reduce the kinetic energy of the combustible mixture gas, promote the full mixing of gas and air, and improve the combustion efficiency. Moreover, the design of the air outlet of the outer ring ejector tube 111 improves the consistency of the air flow velocity at the air outlet 1115 of the outer ring ejector tube 111, reduces the effect of air flow turbulence at the air outlet 1115 of the outer ring ejector tube 111, reduces the recirculation zone, promotes the entrainment of primary air, and realizes complete combustion. Through the setting of multiple outer ring flow ports, the consistency of the air flow pressure field in the outer ring distribution air passage 116 is improved, so that the air flow rates of the fire holes on the outer ring burner cap 2 are uniform, and a uniform and stable combustion condition is realized.

[0089] This embodiment also provides an upward air intake burner, which includes the burner head 1 provided in this embodiment.

[0090] In one implementation, the upward air intake burner of this embodiment further includes a nozzle seat 4, an inner ring burner cap 3 and an outer ring burner cap 2. The outer ring burner cap 2 is buckled on the outer ring structure 11, and the inner ring burner cap 3 is buckled on the inner ring structure 12 of the burner head 1. The burner head 1 is arranged on the nozzle seat 4, and the nozzle seat 4 includes an outer ring gas path 41, and an outer ring nozzle 411 is arranged at its air outlet end, and its center is flush with the center of the outer ring ejector tube 111.

[0091] The upward air intake burner of this embodiment has the same beneficial effects as the burner head 1 provided in this embodiment, and will not be elaborated here.

[0092] This embodiment also provides a gas stove, which includes the upward air intake burner provided in this embodiment.

[0093] The gas stove of this embodiment has the same beneficial effects as the upward air intake burner provided in this embodiment.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A burner head, characterized in that, It includes an outer ring structure (11), and the outer ring structure (11) includes an outer ring outer peripheral wall (113), an outer ring inner peripheral wall (112), a connecting plate (117), an outer ring ejector tube (111) and a baffle (114); The outer ring outer peripheral wall (113) is sleeved outside the outer ring inner peripheral wall (112) at intervals. The connecting plate (117) is arranged in a ring shape. The connecting plate (117) is connected between the outer ring outer peripheral wall (113) and the outer ring inner peripheral wall (112). The baffle (114) is arranged above a partial position in the circumferential direction of the connecting plate (117), and a premixing chamber (115) is formed between the baffle (114), the connecting plate (117), the outer ring outer peripheral wall (113) and the outer ring inner peripheral wall (112); Above the connecting plate (117) and the baffle (114), an outer ring distribution air passage (116) is formed between the outer ring inner peripheral wall (112) and the outer ring outer peripheral wall (113). The air outlet (1115) of the outer ring ejector tube (111) is communicated with the premixing chamber (115), and an outer ring flow port communicated with the outer ring distribution air passage (116) is arranged on the premixing chamber (115); The connecting plate (117) includes a first plate portion (1171), a second plate portion (1172), a third plate portion (1173) and a fourth plate portion (1174) that are sequentially connected end to end in a ring shape. The inner edges of the first plate portion (1171), the second plate portion (1172), the third plate portion (1173) and the fourth plate portion (1174) are all hermetically connected to the outer ring inner peripheral wall (112), and the outer edges of the first plate portion (1171), the second plate portion (1172), the third plate portion (1173) and the fourth plate portion (1174) are all hermetically connected to the outer ring outer peripheral wall (113); The plate surface of the first plate portion (1171) and the plate surface of the third plate portion (1173) are arranged substantially horizontally. The installation height of the first plate portion (1171) is higher than the installation height of the third plate portion (1173). The second plate portion (1172) and the fourth plate portion (1174) extend vertically. The upper ends of the second plate portion (1172) and the fourth plate portion (1174) are respectively connected to both ends of the first plate portion (1171), and the lower ends of the second plate portion (1172) and the fourth plate portion (1174) are respectively connected to both ends of the third plate portion (1173). The baffle (114) is arranged above the third plate portion (1173); The second plate portion (1172) and the fourth plate portion (1174) are inclined and arranged gradually closer to the third plate portion (1173) in the direction from top to bottom; The outer ring outer peripheral wall (113) includes an outer peripheral wall body (1131), and a peripherally integrally formed outer peripheral wall extension portion (1132) extends downward at a position corresponding to the third plate portion (1173) at the lower end of the outer peripheral wall body (1131); The inner peripheral wall (112) of the outer ring includes an inner peripheral wall body, and a integrally formed inner peripheral wall extension extends downward from the lower end of the inner peripheral wall body corresponding to the position of the third plate portion (1173). The first plate portion (1171) is connected between the inner peripheral wall body and the outer peripheral wall body (1131). The vertical extension directions of the inner peripheral wall extension corresponding to the two ends of the second plate portion (1172) and the fourth plate portion (1174) are respectively consistent with the extension directions of the second plate portion (1172) and the fourth plate portion (1174). The vertical extension directions of the outer peripheral wall extension (1132) corresponding to the two ends of the second plate portion (1172) and the fourth plate portion (1174) are respectively consistent with the extension directions of the second plate portion (1172) and the fourth plate portion (1174). The second plate portion (1172), the third plate portion (1173) and the fourth plate portion (1174) are connected between the inner peripheral wall extension and the outer peripheral wall extension (1132).

2. The burner head according to claim 1, characterized in that, The injection end (1114) of the outer ring injection tube (111) is arranged below the first plate portion (1171). The air outlet end of the outer ring injection tube (111) extends horizontally from the first plate portion (1171) towards the direction where the third plate portion (1173) is located. The air outlet end of the outer ring injection tube (111) passes through the outer ring inner peripheral wall (112) and enters the premixing chamber (115).

3. The burner head according to claim 2, characterized in that, The position of the first plate portion (1171) corresponding to the outer ring injection tube (111) forms the upper side pipe wall of the outer ring injection tube (111) at this position. and / or; The position of the outer ring inner peripheral wall (112) corresponding to the outer ring injection tube (111) forms the inner side pipe wall (1112) of the outer ring injection tube (111) at this position.

4. The burner head according to claim 2, characterized in that, The inner side pipe wall (1112) of the air outlet (1115) of the outer ring injection tube (111) close to the center of the burner head (1) is the outer ring inner peripheral wall (112) at the corresponding position. The outer side pipe wall (1113) of the air outlet (1115) of the outer ring injection tube (111) far from the center of the burner head (1) extends into the premixing chamber (115).

5. The burner head according to claim 2, characterized in that, The number of the outer ring injection tubes (111) is two, and the two outer ring injection tubes (111) are arranged at intervals in an axisymmetric manner on both sides of the inner ring structure (12) of the burner head (1).

6. The burner head according to claim 5, characterized in that, One of the outer ring injection tubes (111) is located on the side where the second plate portion (1172) is located, and the other outer ring injection tube (111) is located on the side where the fourth plate portion (1174) is located.

7. The burner head according to claim 5 or 6, characterized in that, A partition plate (1151) is arranged in the premixing chamber (115). The lower end of the partition plate (1151) is hermetically connected to the third plate portion (1173). The inner end and the outer end of the partition plate (1151) are respectively connected to the inner peripheral wall (112) and the outer peripheral wall (113) of the outer ring, so as to divide the premixing chamber (115) into a first premixing tank (1152) and a second premixing tank (1153) which are horizontally spaced apart. The upper ends of the first premixing tank (1152) and the second premixing tank (1153) are communicated with each other; The first premixing tank (1152) and the second premixing tank (1153) are respectively communicated with two of the outer ring ejector pipes (111) in a one-to-one correspondence.

8. The burner head according to any one of claims 1 to 6, characterized in that, The inner peripheral wall (112) of the outer ring, the connecting plate (117), the outer peripheral wall (113) of the outer ring and the outer ring ejector pipe (111) are integrally formed.

9. The burner head according to any one of claims 1 to 6, characterized in that, The outer ring ejector pipe (111) is arranged at the bottom of the outer peripheral wall (113) of the outer ring, and the edge of the outer ring ejector pipe (111) is located inside the contour line of the outer peripheral wall (113); and / or; The axis of the internal passage of the outer ring ejector pipe (111) extends linearly in the horizontal direction; and / or; The upper edge of the air outlet (1115) of the outer ring ejector pipe (111) is flush with the lower surface of the baffle plate (114) or is located below the lower surface of the baffle plate (114).

10. The burner head according to any one of claims 1 to 6, characterized in that, A first outer ring flow port (1141) is arranged on the baffle plate (114); and / or; Second outer ring flow ports (1142) are respectively formed between the baffle plate (114) and the first plate portion (1171) and the second plate portion (1172); and / or; The baffle plate (114) is spaced apart from the outer peripheral wall (113) of the outer ring to form a third outer ring flow port (1143).

11. The burner head according to any one of claims 1 to 6, characterized in that, The burner head (1) further includes an inner ring structure (12), and the inner ring structure (12) is arranged inside the inner peripheral wall (112) of the outer ring.

12. An upward air inlet burner, characterized in that, The upwind burner includes the burner head (1) according to any one of claims 1 to 11.

13. The upward air inlet burner according to claim 12, characterized in that, The upwind burner further includes a nozzle seat (4), an inner ring burner cap (3) and an outer ring burner cap (2); The outer ring burner cap (2) is buckled on the outer ring structure (11), the inner ring burner cap (3) is buckled on the inner ring structure (12) of the burner head (1), and the burner head (1) is arranged on the nozzle seat (4).

14. A gas stove, characterized in that, including the upwind burner according to claim 12 or 13.

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