Nozzle and gas stove using the same

Abstract

The present invention discloses a nozzle and a gas stove using the nozzle. The nozzle is used for a gas stove and includes a nozzle body, a gas diverter and a spray hole. There are at least two spray holes, which are evenly arranged on one side of the nozzle body along the circumferential direction, and the gas diverter is arranged on the other side of the nozzle body. The gas output end of the gas diverter is consistent with the number of the spray holes and is correspondingly connected. The gas diverter and the spray hole run through the nozzle body together. The present invention arranges a plurality of spray holes and a gas diverter correspondingly connected to the spray holes in the nozzle body, so that the gas is sprayed out from the spray holes through the gas diverter to form a plurality of jet columns, and air is sucked in and mixed with the gas. In this way, by using the flow equivalence law, the total circumference of the plurality of spray holes increases relative to a single hole of the same area, the amount of air sucked increases, and the plurality of spray holes makes the sucked air more uniform, effectively increases the primary air coefficient, and makes the air and gas mix more uniformly and fully.

Description

Technical Field

[0001] The invention belongs to the technical field of nozzle structures, and in particular relates to a nozzle and a gas stove using the nozzle. Background Art

[0002] At present, the burners of gas stove products in my country generally adopt partial premixed air type and full premixed air type, both of which are inseparable from the nozzle. As one of the core components of the combustion system in the gas stove, the nozzle's structure determines the size of the primary air coefficient, that is, determines the combustion condition of the burner, which is a key role in the performance of the gas stove.

[0003] At present, most of the nozzles used in gas stoves on the market are single-hole nozzles, that is, a fixed circular hole is set in the center of one end of the nozzle structure as a nozzle, and the jet effect of the nozzle hole is used to guide the gas into the burner for combustion; however, the structure with a circular hole drilled in the center fails to maximize its primary air injection capacity and there is still room for improvement. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a nozzle, which provides a plurality of spray holes on the nozzle body so that the gas is sprayed out in a plurality of jet columns, thereby effectively solving the problem that the primary air injection capacity of the existing nozzle cannot be maximized.

[0005] Another object of the present invention is to provide a gas stove using the above nozzle, through which the above nozzle structure allows the gas to be ejected in the form of a jet column and suck in more air, so that the combustion effect of the gas stove is more stable.

[0006] The technical solution adopted by the present invention is:

[0007] A nozzle, used for a gas stove, comprises a nozzle body, a gas flow dividing part and a spray hole;

[0008] There are at least two spray holes, and the spray holes are evenly arranged on one side of the nozzle body along the circumferential direction. The gas diverter is arranged on the other side of the nozzle body. The gas output end of the gas diverter is consistent with the number of the spray holes and is correspondingly connected. The gas diverter and the spray holes pass through the nozzle body together.

[0009] Preferably, the nozzle also includes an air channel, which is arranged on the end surface of the nozzle body close to the spray hole, and the air channel is radially arranged between the spray holes and extends to the end. The gas is sprayed from the spray hole through the gas diversion part, so that the air passes through and is sucked in to mix with the gas.

[0010] Preferably, the air passage is provided between every two of the spray holes, and a plurality of the air passages are connected at the center of the end surface of the nozzle body.

[0011] Preferably, the gas flow splitter comprises a plurality of flow splitters, the flow splitters correspond to the spray holes one by one, and the central axes of the two coincide with each other.

[0012] Preferably, the diverter pipe comprises a body and at least one group of gas channels, and the gas channels are arranged through the body.

[0013] Preferably, each group of the gas channels includes a diverter hole and a contraction hole, the diverter hole is a cylindrical hole, the contraction hole is a conical hole structure, the diverter hole is connected to the end face of the contraction hole with a larger diameter, and the spray hole is connected to the end face of the contraction hole with a smaller diameter.

[0014] Preferably, the gas flow splitter further comprises a fixing plate, the fixing plate is cooperatively connected with the nozzle body, and the flow splitter pipe is evenly connected and arranged on the fixing plate.

[0015] Preferably, it further comprises an air inlet hole, which is a cylindrical structure, is arranged through the nozzle body, and is communicated with the spray hole, so as to accommodate the gas diversion part.

[0016] Preferably, a groove for fixing and limiting is provided at the end of the air inlet hole close to the end surface of the nozzle body, and a lug cooperating with the groove is correspondingly provided on the gas diversion portion.

[0017] Preferably, the nozzle body includes a guide part, an assembly part and a connecting part which are connected in sequence, the guide part is a cylindrical structure for guiding air, the assembly part is a prismatic structure, the connecting part is provided with an external thread, and the assembly part and the connecting part are used together for the installation and limiting of the nozzle body.

[0018] Preferably, the end of the drainage portion is provided with a chamfer.

[0019] The present invention also protects a gas stove having the nozzle.

[0020] The beneficial effects of the present invention are as follows: the present invention arranges a plurality of spray holes on one side of the nozzle body, and arranges a gas diversion portion corresponding to the spray holes on the other side of the nozzle body, so that the gas is sprayed out from the spray holes through the gas diversion portion to form a plurality of spray columns, and air is sucked in and mixed with the gas; in this way, by utilizing the flow equivalence law, the total circumference increases when the plurality of spray holes are arranged relative to a single hole of the same area, the amount of air sucked in increases, and the plurality of spray holes makes the sucked air more uniform, effectively increasing the primary air coefficient, and making the mixing of air and gas more uniform and sufficient; at the same time, by adopting the above-mentioned nozzle, the gas stove of the present invention can make the combustion of the mixed gas more stable, complete and sufficient, and the carbon monoxide emission in the flue gas is lower, which brings higher thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The internal structure diagram of the nozzle provided in Example 1 of the present invention;

[0022] Figure 2 A cross-sectional view of a nozzle provided in Example 1 of the present invention;

[0023] Figure 3 A structural diagram of the nozzle body, the spray hole and the air inlet hole after being assembled in the nozzle provided in Example 1 of the present invention;

[0024] Figure 4 A cross-sectional view of the nozzle body, the spray hole and the air inlet hole after being assembled in the nozzle provided in Example 1 of the present invention;

[0025] Figure 5 A structural diagram of a gas flow splitter in a nozzle provided in Example 1 of the present invention;

[0026] Figure 6 A top view of a gas flow splitter in a nozzle provided in Example 1 of the present invention;

[0027] Figure 7 A top view of a nozzle provided in Example 1 of the present invention when there are two nozzle holes;

[0028] Figure 8 A top view of a nozzle provided in Example 1 of the present invention when there are three nozzle holes;

[0029] Fig. 9 A top view of a nozzle provided in Example 1 of the present invention when there are four nozzle holes;

[0030] Fig.10 A top view of a nozzle provided in Example 1 of the present invention when there are five nozzle holes;

[0031] Fig.11 A working process diagram of the nozzle provided in Example 1 of the present invention;

[0032] Fig.12 This is a structural diagram of an existing nozzle;

[0033] Fig.13 This is a working process diagram of an existing nozzle.

[0034] In the figure: 1. nozzle body; 11. drainage part; 111. chamfer; 12. assembly part; 13. connection part; 2. gas diversion part; 21. diversion pipe; 211. body; 212. diversion hole; 213. contraction hole; 22. fixing plate; 23. lug; 3. spray hole; 4. air channel; 5. air inlet hole; 51. slot. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention more clear, the present invention is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention; that is, the specific embodiments herein are part of the embodiments of the present application, not all of the embodiments; based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0036] Example 1

[0037] Embodiment 1 of the present invention provides a nozzle for a gas stove, such as Figure 1 and Figure 2 As shown, it includes a nozzle body 1, a gas flow splitter 2 and a spray hole 3;

[0038] There are at least two spray holes 3, and the spray holes 3 are evenly arranged on one side of the nozzle body 1 along the circumferential direction. The gas diverter 2 is arranged on the other side of the nozzle body 1. The gas output ends of the gas diverter 2 are consistent with the number of the spray holes 3 and are correspondingly connected. The gas diverter 2 and the spray holes 3 pass through the nozzle body 1 together.

[0039] When in use, the gas is sprayed out from the spray hole 3 through the gas splitter 2 to form a plurality of spray columns.

[0040] Specifically, a spray hole 3 and a gas diversion portion 2 are respectively provided in the nozzle body 1, and the spray hole 3 and the gas diversion portion 2 pass through the nozzle body 1 together. There are at least two spray holes 3, and the gas diversion portion 2 is correspondingly connected to the multiple spray holes 3, that is, the gas diversion portion 2 is connected to the multiple spray holes 3 one by one, and there is no gap in the connected parts.

[0041] In this way, by arranging a plurality of nozzle holes 3, the gas is ejected from the nozzle holes 3 through the gas diversion portion 2 to form a plurality of jet columns. The circumference of the plurality of jet columns is greater than the circumference of a single jet column ejected from a single nozzle hole of an existing nozzle, thereby allowing more air to be sucked in. At the same time, the plurality of jet columns can be mixed with the air sucked in, and the mixing effect of the gas and air is better.

[0042] In a specific implementation, the number of the spray holes 3 is at least two, and may be three, four or five, or even more. The number of the spray holes 3 is not limited; however, the total area of ​​the spray holes 3 is equal to the area of ​​a single spray hole in the existing nozzle structure.

[0043] In a specific implementation, the end of the spray hole 3 away from the gas flow dividing portion 2 is also connected to a chamfer having a trumpet-shaped structure.

[0044] Fig.12 For the existing nozzle structure, such as Fig.12As shown, the existing nozzle is generally a group of circular channels processed in a prism, one section of the prism outside is the prism body, and the other section is processed with external threads for fixing the nozzle on the nozzle seat. The circular channels processed in the prism include an air inlet hole, a contraction hole, and a spray hole (a throttling hole, i.e., a gas flow control hole). The air inlet hole is a cylindrical hole, and the contraction hole is a conical hole. When the gas passes from the air inlet hole to the contraction hole, due to the change in the channel area, the static pressure of the gas changes to a dynamic pressure, and the gas is sprayed out at a high speed through the spray hole. The cross-section of the spray hole is a small circular hole of a certain value, that is, the spray hole is a small straight cylindrical section, and the cross-sectional area thereof determines the flow rate of the gas sprayed out. The gas is sprayed out at a high speed through the spray hole, that is, when the nozzle is used in conjunction with the burner in the gas stove, such as Fig.13 As shown, the gas is ejected into the columnar hole of the burner ejector tube and a negative pressure cavity is formed in the columnar hole cavity, forcing the surrounding air to enter the columnar hole cavity of the burner ejector tube and mix with the gas ejected from the nozzle hole, which is the jet effect of the nozzle hole. The mixed gas reaches the burner head through the burner ejector tube and ignites and burns;

[0045] In the process of the nozzle spraying gas and entraining air, the air is directly entrained and injected into the nozzle, and the amount of air entrained is determined by the circumference of the nozzle. The larger the circumference of the nozzle in contact with the air, the more air is entrained, the larger the primary air volume, the higher the primary air coefficient, the more fully the gas and air are mixed, and the more complete and thorough the combustion.

[0046] Most existing nozzles have a fixed circular hole, i.e., a spray hole, drilled in the center of one end of the nozzle. Once the diameter of the spray hole is determined, the circumference and area of ​​the spray hole are also determined, and the amount of air sucked in by the spray hole and the flow rate ejected by the spray hole are also determined, that is, the flow rate and primary air coefficient of the nozzle are determined.

[0047] Compared with the existing nozzle, the present embodiment sets a plurality of spray holes 3 through one side of the nozzle body 1, and the sum of the areas of the plurality of spray holes 3 is equal to the area of ​​a single spray hole of the existing nozzle, that is, after the diameter of the spray hole, i.e., the size, is determined, compared with the existing nozzle directly setting a single hole according to the determined area, the present embodiment sets a plurality of spray holes 3, and the sum of the areas of the plurality of spray holes 3 is a determined area, so that the total area of ​​the plurality of spray holes 3 in the present embodiment is equal to the spray hole area of ​​the existing nozzle, that is, the present embodiment divides a spray hole in the existing nozzle into a plurality of equal-valued small holes, i.e., the spray holes 3 in the present embodiment.

[0048] According to the flow equivalence law, a large hole is divided into several equivalent small holes. Although the areas of these equivalent small holes are equivalent to that of the large hole, the circumference of these equivalent small holes is greater than that of the large hole.

[0049] The specific proof is as follows: If the diameter of the large hole is D, it is divided into n small holes of equal diameter, and the diameter of the small hole is d. According to the equivalent law, we have:

[0050] n×π×d2 / 4=π×D 2 / 4, that is, d = D / n 1 / 2

[0051] The circumference of n small holes of equal diameter is: n×π×d=n×π×D / n 1 / 2 =n 1 / 2 ×π×D, the perimeter of the large hole is π×D, so the perimeter of the small hole is n times the perimeter of the original large hole. 1 / 2 times, which is larger than the circumference of the original large hole.

[0052] In this way, compared with a single nozzle of an existing nozzle, the total circumference of the multiple nozzle holes 3 of this embodiment is larger. The larger the circumference of the nozzle hole in contact with the air, the more air is sucked in, the larger the primary air volume, the higher the primary air coefficient, the more fully the gas and air are mixed, and the more complete and thorough the combustion.

[0053] like Figure 1 and Figure 3 As shown, in order to allow the air to be better sucked in, the nozzle also includes an air channel 4, which is arranged on the end surface of the nozzle body 1 close to the spray hole 3. The air channel 4 is radially arranged between the spray holes 3 and extends to the end, so that air can pass through and be sucked in to mix with the fuel gas.

[0054] Specifically, an air channel 4 is provided on the end surface of the nozzle body 1 on which the spray holes 3 are provided. The air channel 4 is a concave groove and is distributed between the spray holes 3 along the radial direction of the end surface and extends to the end of the end surface.

[0055] In this way, when the nozzle is assembled with the ejector tube of the burner in the gas stove, the gas is ejected into the cylindrical hole of the ejector tube through the nozzle hole 3 and a negative pressure cavity is formed in the cylindrical hole cavity. The surrounding air enters between the nozzle and the ejector tube through the air channel 4 under the action of negative pressure and mixes with the gas.

[0056] In order to increase the air flow, that is, to further enhance the effect of air being sucked in, the air channel 4 is arranged between every two of the spray holes 3 , and a plurality of the air channels 4 are connected at the center of the end surface of the nozzle body 1 .

[0057] That is, an air channel 4 is arranged between every two spray holes 3, and a plurality of air channels 4 are distributed radially and connected at the center of the end surface of the nozzle body, so as to ensure that there is no resistance caused by the disconnection of the air channels 4 when the air is sucked in.

[0058] like Figure 5 As shown, the gas flow dividing part 2 includes a plurality of flow dividing pipes 21, and the flow dividing pipes 21 correspond to the spray holes 3 one by one, and the central axes of the two are aligned, that is, the central axes of the two coincide.

[0059] Specifically, the gas diversion part 2 includes a plurality of diversion tubes 21, and the diversion tubes 21 correspond to the nozzle holes 3 one by one, and the two are connected, and the central axes of the diversion tubes 21 and the nozzle holes 3 are also aligned, that is, they coincide with each other. In this way, the gas enters the plurality of diversion tubes 21, at which time the gas has been divided into multiple clusters, and then the gas enters the nozzle holes 3 through the diversion tubes 21, and then is ejected to form a plurality of jet columns.

[0060] In a specific implementation, the diverter pipe 21 includes a body 211 and at least one group of gas channels, and the gas channels are arranged through the body 211 .

[0061] Specifically, the diverter pipe 21 includes a main body 211 , in which at least one group of gas channels is arranged, that is, two groups, three groups or even more groups of gas channels can be arranged, and the multiple groups of gas channels are connected in sequence and are arranged throughout the main body 211 .

[0062] In a specific implementation, each group of the gas channels includes a diverter hole 212 and a contraction hole 213, wherein the diverter hole 212 is a cylindrical hole, and the contraction hole 213 is a conical hole structure. The diverter hole 212 is connected to the end face of the contraction hole 213 with a larger diameter, and the spray hole 3 is connected to the end face of the contraction hole 213 with a smaller diameter, that is, the end face of the contraction hole 213 with a smaller diameter is connected to the spray hole 3 or the diverter hole of the adjacent gas channel.

[0063] That is, each group of gas channels includes a diverter hole 212 and a contraction hole 213, the diverter hole 212 is a cylindrical hole, the contraction hole 213 is a conical hole, the end surface with a larger diameter on the contraction hole 213 is connected to the diverter hole 212, and the end surface with a smaller diameter is connected to the nozzle 3, thereby realizing the conversion of the static pressure of the gas into the dynamic pressure.

[0064] In a specific implementation, in order to avoid the problem that when only one set of gas channels is provided, the diameter difference between the diverter hole 212 and the nozzle hole 3 is large, resulting in the problem of unsmooth gas transmission, multiple sets of gas channels may be provided;

[0065] That is Figure 5 As shown, two groups of gas channels are arranged in the diverter pipe 21, that is, a first-level diverter hole, a first-level contraction hole, a second-level diverter hole, and a second-level contraction hole are connected in the main body 211. The first-level diverter hole, the first-level contraction hole, the second-level diverter hole, and the second-level contraction hole are connected in sequence. There is a gradual diameter change process between the first-level diverter hole and the nozzle hole, so that the gas circulation is smoother.

[0066] However, the gas channels of this embodiment are not limited to one group or two groups, and can be changed accordingly according to actual needs, for example, according to the diameter of the nozzle hole 3.

[0067] In order to fix the flow dividing tube 21 , the gas flow dividing part 2 further includes a fixing plate 22 , the fixing plate 22 is connected with the nozzle body 1 , and the flow dividing tube 21 is evenly connected and arranged on the fixing plate 22 .

[0068] That is, the gas diversion part 2 is composed of several diversion tubes 21 combined together and fixed on the fixed plate 22. The number of the diversion tubes 21 is consistent with the number of the nozzles 3. Each diversion tube 21 includes a main body 211 and at least one group of gas channels. The contraction hole 212 in the gas channel is connected to the nozzle 3.

[0069] In order to realize the assembly of the gas diversion part 2, as Figure 3 and Figure 4 As shown, it also includes an air inlet hole 5, which is a cylindrical structure. The air inlet hole 5 is arranged through the nozzle body 1 and is connected with the spray hole 3 to accommodate the gas diversion part 2.

[0070] like Figure 4 As shown, the end of the air inlet 5 close to the end surface of the nozzle body 1 is provided with a groove 51 for fixing and limiting, and the gas diverter 2 is correspondingly provided with a lug 23 that cooperates with the groove 51 .

[0071] Specifically, a cylindrical straight through hole is provided on one side of the nozzle body 1 away from the spray hole 3, and the cylindrical straight through hole is the air inlet hole 5. The air inlet hole 5 is connected with the spray hole 3. A card groove 51 is provided at the end of the air inlet port 5. The card groove 51 plays a positioning role to facilitate the insertion of the gas diverter 2. Lugs 23 are correspondingly provided on both sides of the fixed plate 22 in the gas diverter 2. When the gas diverter 2 is assembled, the gas diverter 2 is placed in the air inlet hole 5, and the lug 23 is matched with the card groove 51. At this time, the gas diverter 2 is completely installed, and the diverter pipe 21 is correspondingly connected with the spray hole 3.

[0072] In this way, when the lug 23 is assembled with the slot 51, the contraction hole 212 of the gas diverter 2 is in close contact with the spray hole 3, and the central axis of the diverter pipe 21 is aligned with the central axis of the spray hole 3, that is, they coincide with each other;

[0073] like Fig.11As shown, through such assembly, the gas enters into the multiple nozzle holes 3 at the end through the air inlet hole 5 of the nozzle body 1 through the diverter pipes 21. When the gas flows through the gas diverter portion 2, the flow channel cross-sectional area of ​​the diverter pipe 21 gradually decreases, and its flow velocity increases. When the gas flows out of the several nozzle holes 3, several jet columns are formed. Compared with a single nozzle hole of the same area, the circumference of this cluster of small jet columns increases, and the amount of air sucked in increases. Due to the action of multiple nozzle holes 3, the air sucked in is more uniform, and the primary air coefficient is increased. When the mixed gas with full mixture of gas and air enters the burner for combustion, the combustion is more stable, complete and sufficient. Due to the sufficient combustion, the CO emission in the flue gas is lower, and the thermal efficiency is higher.

[0074] In a specific implementation, the card slot 51 is a straight groove, but the card slot 51 is not limited to the above structure and can be adjusted according to actual use needs.

[0075] like Figure 1 As shown, the nozzle body 1 includes a guide portion 11, an assembly portion 12 and a connecting portion 13 which are connected in sequence. The guide portion 11 is a cylindrical structure for guiding air. The assembly portion 12 is a prismatic structure. The connecting portion 13 is provided with an external thread. The assembly portion 12 and the connecting portion 13 are used together for the installation and positioning of the nozzle body 1.

[0076] Specifically, the nozzle body 1 includes three sections, namely, a flow guide portion 11 of a cylindrical structure, an assembly portion 12 of a prismatic structure, and a connection portion 13 of a cylindrical structure, and the connection portion 13 is provided with an external thread; wherein the assembly portion 12 is a prismatic structure, and serves as an assembly holding portion, which is convenient for inserting and tightening a special tool (wrench), and the connection portion 13 is used to enter and connect with the nozzle seat, etc.;

[0077] In this way, during assembly, the assembly part 12 is rotated with a tool, and the connecting part 13 is gradually connected to the nozzle seat through threads, that is, the nozzle body 1 is installed and limited through the assembly part 12 and the connecting part 13.

[0078] In order to better guide the air, a chamfer 111 is provided at the end of the guide portion 11 .

[0079] In a specific implementation, the chamfer 111 is located outside the drainage portion 11 , that is, the outer edge of the drainage portion 11 is chamfered.

[0080] In a specific implementation, the number of the spray holes 3 is at least two, and may be three, four or five, or even more. The number of the spray holes 3 is not limited; however, the total area of ​​the spray holes 3 is equal to the area of ​​a single spray hole in the existing nozzle structure.

[0081] Figures 7 to 10 The top view of the nozzle holes 3 is shown when there are two, three, four and five nozzle holes 3. Figure 7-Figure 10It can be seen that the spray holes 3 of this embodiment are evenly distributed along the circumference of the nozzle body 1, and the air passage 4 is arranged between every two spray holes 3 and distributed along the radial direction;

[0082] In this way, the gas is sprayed out from the spray hole 3, the air is sucked in, enters through the air channel 4, and then mixes with the gas; that is, each jet column is surrounded by air, and the mixing effect of air and gas is better.

[0083] Working principle: When the nozzle of this embodiment is in use, the gas enters the multiple nozzle holes 3 at the end through the air inlet hole 5 in the nozzle body 1 through the branch pipes 21, and is ejected from the nozzle holes 3 to form multiple jet columns. The air is sucked in through the air channel 4 and mixed with the gas.

[0084] In this embodiment, a plurality of spray holes are arranged on one side of the nozzle body, and a gas flow divider correspondingly connected to the spray holes is arranged on the other side of the nozzle body, so that the gas is sprayed out from the spray holes through the gas flow divider to form a plurality of spray columns, and the air is sucked in and mixed with the gas. In this way, by using the flow equivalent law, the total perimeter of the plurality of spray holes is increased relative to a single hole of the same area, the amount of air sucked in is increased, and the plurality of spray holes makes the sucked air more uniform, effectively increasing the primary air coefficient, so that the air and gas are mixed more uniformly and fully.

[0085] At the same time, this embodiment can increase the air flow rate by setting the air channel.

[0086] Example 2

[0087] Embodiment 2 of the present invention provides a gas stove using the nozzle of embodiment 1.

[0088] In a specific implementation, the gas stove has a burner, and the nozzle body 1 is arranged on the nozzle seat and is opposite to the ejector pipe of the burner.

[0089] like Fig.11 As shown, the gas enters the nozzle 3 through the diverter pipe 21, and after being ejected from the nozzle 3, forms a plurality of jet columns, enters the ejector tube, that is, enters the columnar hole of the ejector tube and forms a negative pressure cavity in the columnar hole cavity. The surrounding air enters between the nozzle and the ejector tube through the air channel 4 under the action of negative pressure and mixes with the gas.

[0090] When the gas flows through the gas diversion part 2, the cross-sectional area of ​​the flow channel of the diversion pipe 21 gradually decreases, and its flow velocity increases. When the gas flows out of the several nozzle holes 3, several jet columns are formed. Compared with a single nozzle hole of the same area, the circumference of this cluster of small jet columns increases, and the amount of air sucked in increases. Due to the action of multiple nozzle holes 3, the air sucked in is more uniform, and the primary air coefficient is increased. When the mixed gas with full mixture of gas and air enters the burner for combustion, the combustion is more stable, complete and sufficient. Due to the sufficient combustion, the CO emission in the flue gas is lower, and the thermal efficiency is higher.

[0091] The gas stove of this embodiment is provided with the above-mentioned nozzle, a plurality of spray holes are provided on one side of the nozzle body, and a gas flow divider correspondingly connected to the spray holes is provided on the other side of the nozzle body, so that the gas is sprayed out from the spray hole through the gas flow divider to form a plurality of spray columns, and the air is sucked in and mixed with the gas; in this way, by using the flow equivalent law, the total perimeter of the plurality of spray holes is increased relative to the single hole of the same area, the amount of air sucked is increased, and the plurality of spray holes makes the sucked air more uniform, effectively increases the primary air coefficient, and makes the air and gas mixed more uniformly and fully;

[0092] At the same time, the gas stove uses the nozzle to achieve a better mixing effect of the gas and air entering the burner, and the combustion is more stable, complete and sufficient. Due to the sufficient combustion, the CO emission in the flue gas is lower, and the thermal efficiency is higher.

[0093] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A nozzle for a gas stove, characterized in that: It comprises a nozzle body (1), a gas flow splitter (2) and a spray hole (3); At least two spray holes (3) are provided and are evenly arranged along the circumferential direction on one side of the interior of the nozzle body (1); the gas flow splitter (2) is provided on the other side of the interior of the nozzle body (1); the gas output end of the gas flow splitter (2) is the same in number as the spray holes (3) and is correspondingly connected; the gas flow splitter (2) and the spray holes (3) penetrate the nozzle body (1) together; the nozzle further comprises an air passage (4); the air passage (4) is provided on an end surface of the nozzle body (1) close to the spray holes (3); the air passage (4) is radially provided between the spray holes (3) and extends to an end portion, so as to allow air to pass through and be sucked in to mix with the gas; The gas flow splitter (2) further comprises a fixing plate (22), the fixing plate (22) being cooperatively connected to the nozzle body (1), the gas flow splitter (2) comprising a plurality of flow splitter pipes (21), the flow splitter pipes (21) being evenly connected and arranged on the fixing plate (22); The nozzle further comprises an air inlet hole (5), the air inlet hole (5) being a cylindrical structure, the air inlet hole (5) penetrating the nozzle body (1) and communicating with the spray hole (3), and being used to accommodate the gas diverter (2); The nozzle body (1) comprises a flow guiding portion (11), an assembly portion (12) and a connecting portion (13) which are connected in sequence; the flow guiding portion (11) is a cylindrical structure and is used for guiding air; the assembly portion (12) is a prismatic structure; the connecting portion (13) is provided with an external thread; the assembly portion (12) and the connecting portion (13) are used together for mounting and limiting the nozzle body (1).

2. The nozzle according to claim 1, characterized in that The air channel (4) is arranged between every two of the spray holes (3), and a plurality of the air channels (4) are connected at the center of the end surface of the nozzle body (1).

3. The nozzle according to claim 1 or 2, characterized in that: The flow distribution pipe (21) corresponds to the spray hole (3) one by one, and the central axes of the two coincide with each other.

4. The nozzle according to claim 3, characterized in that The flow distribution pipe (21) comprises a body (211) and at least one group of gas channels, wherein the gas channels are arranged through the body (211).

5. The nozzle according to claim 4, characterized in that Each group of the gas channels comprises a flow diversion hole (212) and a contraction hole (213); the flow diversion hole (212) is a cylindrical hole, the contraction hole (213) is a conical hole structure, the flow diversion hole (212) is connected to the end surface of the contraction hole (213) with a larger diameter, and the spray hole (3) is connected to the end surface of the contraction hole (213) with a smaller diameter.

6. The nozzle according to claim 3, characterized in that A clamping groove (51) for fixing and limiting is provided at the end of the air inlet hole (5) close to the end surface of the nozzle body (1), and a lug (23) cooperating with the clamping groove (51) is correspondingly provided on the gas flow splitter (2).

7. The nozzle according to claim 1, characterized in that The end of the drainage portion (11) is provided with a chamfer (111).

8. A gas stove using the nozzle according to any one of claims 1 to 7.

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