CN112197266A - Nozzle and gas stove using same - Google Patents
Nozzle and gas stove using same Download PDFInfo
- Publication number
- CN112197266A CN112197266A CN202011042210.9A CN202011042210A CN112197266A CN 112197266 A CN112197266 A CN 112197266A CN 202011042210 A CN202011042210 A CN 202011042210A CN 112197266 A CN112197266 A CN 112197266A
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- gas
- nozzle
- hole
- air
- nozzle body
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- 239000007921 spray Substances 0.000 claims abstract description 80
- 230000008602 contraction Effects 0.000 claims description 16
- 239000007789 gas Substances 0.000 abstract description 129
- 239000002737 fuel gas Substances 0.000 abstract description 31
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 99
- 238000002347 injection Methods 0.000 description 22
- 239000007924 injection Substances 0.000 description 22
- 238000002485 combustion reaction Methods 0.000 description 13
- 239000011148 porous material Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a nozzle and a gas stove using the same, wherein the nozzle is used for the gas stove and comprises a nozzle body, a gas shunting part and a spray hole; the nozzle body is evenly located along circumference to the orifice, and the inside opposite side of nozzle body is located to gas reposition of redundant personnel portion, and the gas output of gas reposition of redundant personnel portion is unanimous with orifice quantity, and corresponds the intercommunication, and gas reposition of redundant personnel portion runs through the nozzle body with the orifice jointly. The invention enables the fuel gas to be sprayed out from the spray holes through the fuel gas shunting part by arranging the plurality of spray holes and the fuel gas shunting part correspondingly communicated with the spray holes in the nozzle body to form a plurality of spray columns and sucks air coils to be mixed with the fuel gas; utilize flow equivalent law like this, total perimeter increases when a plurality of orifices set up for the haplopore of same area, and the air volume of entrainment increases, and a plurality of orifices make the air of entrainment more even, have effectively increased the air coefficient once, make air and gas mix more evenly abundant.
Description
Technical Field
The invention belongs to the technical field of nozzle structures, and particularly relates to a nozzle and a gas stove using the same.
Background
At present, the burners of gas cooker products in China generally adopt a partially premixed air type and a completely premixed air type, and the two types of burners can not be provided with nozzles. The nozzle is one of the core components of a combustion system in a gas stove, and the structure of the nozzle determines the size of a primary air coefficient, namely the combustion condition of a combustor, namely the nozzle plays a key role in the performance of the gas stove.
At present, nozzles used by gas cookers in the market are single-hole nozzles, namely, a fixed value round hole is arranged at the center of one end of a nozzle structure to serve as a spray hole, and gas is guided to enter a combustor for combustion through the jet flow effect of the spray hole; however, the structure with the central drilled round hole cannot exert the primary air injection capacity to the maximum extent, and has an improved space.
Disclosure of Invention
In view of the above, the present invention is to provide a nozzle, which is provided with a plurality of nozzles on a nozzle body to eject fuel gas in a plurality of jet streams, so as to effectively solve the problem that the primary air ejection capability of the existing nozzle cannot be exerted to the maximum.
Another object of the present invention is to provide a gas stove using the nozzle, in which the nozzle structure is used to spray gas in a jet flow column and to entrain more air, so that the combustion effect of the gas stove is more stable.
The technical scheme adopted by the invention is as follows:
a nozzle is used for a gas stove and comprises a nozzle body, a gas shunting part and a spray hole;
the nozzle body is provided with at least two jet holes, the jet holes are uniformly arranged on one side of the interior of the nozzle body along the circumferential direction, the gas diversion part is arranged on the other side of the interior of the nozzle body, the gas output ends of the gas diversion part are consistent with the jet holes in number and are correspondingly communicated, and the gas diversion part and the jet holes jointly run through the nozzle body.
Preferably, the nozzle further comprises an air channel, the air channel is arranged on the end face of the nozzle body close to the spray holes, the air channel is arranged between the spray holes in the radial direction and extends to the end, and the fuel gas is sprayed out of the spray holes through the fuel gas flow dividing part and is used for enabling air to pass through and be sucked to be mixed with the fuel gas.
Preferably, the air passage is provided between every two of the nozzle holes, and a plurality of the air passages communicate at the center of the end surface of the nozzle body.
Preferably, the gas reposition of redundant personnel portion includes a plurality of shunt tubes, the shunt tubes with the orifice one-to-one, and the central axis coincidence of both.
Preferably, the shunt tubes comprise a body and at least one group of gas passages, and the gas passages are arranged in the body in a penetrating mode.
Preferably, each group of the gas passages comprises a diversion hole and a contraction hole, the diversion hole is a cylindrical hole, the contraction hole is a conical hole structure, the diversion hole is connected with the end face with the larger diameter of the contraction hole, and the spray hole is connected with the end face with the smaller diameter of the contraction hole.
Preferably, the gas reposition of redundant personnel portion still includes the fixed plate, the fixed plate with nozzle body cooperation is connected, the shunt tubes evenly communicate set up in on the fixed plate.
Preferably, the fuel gas distributor further comprises a gas inlet hole, wherein the gas inlet hole is of a cylindrical structure, penetrates through the nozzle body, is communicated with the spray hole and is used for accommodating the fuel gas distributing part.
Preferably, the end part of the air inlet hole close to the end face of the nozzle body is provided with a clamping groove for fixing and limiting, and the gas shunting part is correspondingly provided with a lug matched with the clamping groove.
Preferably, the nozzle body includes drainage portion, assembly portion and connecting portion that connect gradually, drainage portion is the cylinder structure for the water conservancy diversion of air, assembly portion is the prism structure, be provided with the external screw thread on the connecting portion, assembly portion with connecting portion are used for jointly the installation and the spacing of nozzle body.
Preferably, the end of the drainage portion is provided with a chamfer.
The invention also protects a gas stove with the nozzle.
The invention has the beneficial effects that: according to the invention, the plurality of spray holes are formed in one side of the nozzle body, and the fuel gas shunting part correspondingly communicated with the spray holes is formed in the other side in the nozzle body, so that fuel gas is sprayed out of the spray holes through the fuel gas shunting part to form a plurality of spray columns, and air is sucked in and mixed with the fuel gas; therefore, by utilizing the flow equivalent law, the total circumference of the plurality of spray holes is increased when the plurality of spray holes are arranged relative to a single hole with the same area, the entrainment air quantity is increased, and the plurality of spray holes enable the entrainment air to be more uniform, so that the primary air coefficient is effectively increased, and the air and the fuel gas are more uniformly and fully mixed; meanwhile, by adopting the nozzle, the gas stove of the invention can burn mixed gas more stably, completely and fully, and has lower emission of carbon monoxide in flue gas and higher thermal efficiency.
Drawings
FIG. 1 is a view showing an internal structure of a nozzle provided in example 1 of the present invention;
FIG. 2 is a cross-sectional view of a nozzle provided in example 1 of the present invention;
fig. 3 is a structural view of the nozzle body, the nozzle hole, and the air intake hole after being assembled in the nozzle provided in embodiment 1 of the present invention;
fig. 4 is a sectional view of the nozzle body, the nozzle hole, and the air intake hole of the nozzle provided in embodiment 1 of the present invention after assembly;
fig. 5 is a structural view of a fuel gas flow-splitting portion in the nozzle provided in embodiment 1 of the present invention;
fig. 6 is a plan view of a fuel gas flow-dividing portion in the nozzle provided in embodiment 1 of the present invention;
fig. 7 is a plan view of a nozzle provided in embodiment 1 of the present invention, in which two nozzle holes are provided;
fig. 8 is a plan view of a nozzle provided in embodiment 1 of the present invention, in which three nozzle holes are formed;
fig. 9 is a plan view of a nozzle provided in embodiment 1 of the present invention, in which four nozzle holes are provided;
fig. 10 is a plan view of a nozzle provided in example 1 of the present invention, in which five nozzle holes are formed;
FIG. 11 is a view showing the operation of a nozzle provided in example 1 of the present invention;
FIG. 12 is a view showing a structure of a conventional nozzle;
fig. 13 is a diagram illustrating an operation of a conventional nozzle.
In the figure: 1. a nozzle body; 11. a drainage part; 111. chamfering; 12. an assembling portion; 13. a connecting portion; 2. a gas diversion part; 21. a shunt tube; 211. a body; 212. a shunt hole; 213. collapsing shrinkage holes; 22. a fixing plate; 23. a lug; 3. spraying a hole; 4. an air passage; 5. an air inlet; 51. a clamping groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the specific embodiments herein are a subset of the embodiments in the present application and not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present invention.
Example 1
the number of the spray holes 3 is at least two, the spray holes 3 are uniformly arranged on one side of the interior of the nozzle body 1 along the circumferential direction, the gas diversion part 2 is arranged on the other side of the interior of the nozzle body 1, the number of the gas output ends of the gas diversion part 2 is the same as that of the spray holes 3 and is correspondingly communicated with the spray holes 3, and the gas diversion part 2 and the spray holes 3 jointly penetrate through the nozzle body 1;
when in use, the fuel gas is sprayed out from the spray holes 3 through the fuel gas shunting part 2 to form a plurality of spray columns.
Specifically, be provided with orifice 3 and gas reposition of redundant personnel portion 2 in the nozzle body 1 respectively, orifice 3 and gas reposition of redundant personnel portion 2 run through nozzle body 1 jointly, and orifice 3 is provided with at least two, and gas reposition of redundant personnel portion 2 corresponds the intercommunication with a plurality of orifice 3, and gas reposition of redundant personnel portion 2 and a plurality of orifice 3 are all communicate one by one promptly exactly, and the intercommunication position is seamless.
Like this, through setting up a plurality of orifice 3, make the gas through gas reposition of redundant personnel portion 2 from orifice 3 blowout, form a plurality of jet columns, the girth of a plurality of jet columns is grown with the week than the single jet column of the single orifice spun of current nozzle to make more air by the entrainment entering, a plurality of jet columns homoenergetic simultaneously with by the air mixture of entrainment entering, gas and air mixing effect are better.
In specific implementation, the number of the injection holes 3 is at least two, and may be three, four, or five, or even more, and the number of the injection holes 3 is not limited; but the sum of the areas of the orifices 3 is equal to the area of a single orifice of the known nozzle structure.
In specific implementation, the end part of the jet orifice 3 far away from the fuel gas shunting part 2 is also communicated with a chamfer with a trumpet-shaped structure.
Fig. 12 shows a conventional nozzle structure, as shown in fig. 12, a group of circular channels are processed in a prism, one section of the prism is a prism body, the other section of the prism is processed with external threads for mounting and fixing the nozzle on a nozzle seat, the circular channels processed in the prism comprise an air inlet, a contraction hole and an orifice (i.e. a gas flow control hole), the air inlet is a cylindrical hole, the contraction hole is a conical hole, gas is collected from the air inlet to the contraction hole, static pressure of the gas is changed into dynamic pressure due to the change of the area of the channel, and the gas is ejected at high speed through the orifice, the orifice has a small section, i.e. the orifice is a small right circular cylinder section, the size of the section determines the flow of the ejected gas, the gas is ejected at high speed through the orifice, that is, when the nozzle is used in cooperation with a burner in a gas stove, as shown in fig. 13, the gas is ejected into the cylindrical hole of a, the surrounding air is forced to enter the tubular hole cavity of the burner ejector pipe and is mixed with the fuel gas sprayed from the spray holes, namely the jet flow effect of the spray holes is obtained, and the mixed gas reaches the head part of the burner through the burner ejector pipe to ignite and burn;
in the process of injecting the fuel gas entrainment air through the spray holes, because the air is directly entrained and injected, the amount of the entrained air is determined by the circumference of the spray holes, the larger the contact circumference of the spray holes and the air is, the more the entrained air is, the larger the primary air amount is, the higher the primary air coefficient is, the more the fuel gas and the air are fully mixed, and the more complete and thorough the combustion is.
However, most of the existing nozzles are provided with a fixed value circular hole, namely a spray hole, drilled in the center of one end of the nozzle, once the diameter of the spray hole is determined, the perimeter and the area of the spray hole are also determined, the entrainment air quantity of the spray hole and the spray flow quantity of the spray hole are also determined, and the flow quantity and the primary air coefficient of the nozzle are also determined.
Compared with the existing nozzle, in the present embodiment, the plurality of injection holes 3 are arranged in one side of the nozzle body 1 in a penetrating manner, the area of the plurality of injection holes 3 is equal to the area of the single injection hole of the existing nozzle, that is, after the diameter, that is, the size of the injection hole is determined, the nozzle is directly arranged as a single hole according to the determined area compared with the existing nozzle, the plurality of injection holes 3 are arranged in the present embodiment, and the area sum of the plurality of injection holes 3 is the determined area, so that the total area of the plurality of injection holes 3 in the present embodiment is equal to the area of the injection hole of the existing nozzle, that is, the present embodiment divides one injection hole in the existing nozzle into a plurality of equivalent small holes.
According to the flow equivalence law, a large pore is divided into a plurality of equivalent pores, and although the area of the equivalent pores is equivalent to that of the large pore, the perimeter of the equivalent pores is larger than that of the large pore.
The concrete demonstration is as follows: if the diameter of the large pore is D, the large pore is divided into n small pores with the same diameter, the diameter of the small pore is D, and the method comprises the following steps according to the law of equivalence:
n×π×d2/4＝π×D2(ii)/4 is D ═ D/n1/2
The circumferences of the n equal-diameter holes are as follows: n × pi × D ═ n × pi × D/n1/2＝n1/2X π × D, the circumference of the large pore is π × D, so that the circumference of the small pore is n of the circumference of the original large pore1/2Is twice as large as the circumference of the original big hole.
Thus, compared with a single spray hole of the existing nozzle, the total circumference of the spray holes 3 is larger, the larger the circumference of the spray hole contacted with air is, the more air is sucked, the primary air quantity is large, the primary air coefficient is high, the more fully the gas and the air are mixed, and the more complete and thorough combustion is realized.
As shown in fig. 1 and 3, in order to better entrain air, the nozzle further comprises an air channel 4, the air channel 4 is arranged on the end surface of the nozzle body 1 close to the spray holes 3, the air channel 4 is arranged between the spray holes 3 in the radial direction and extends to the end part, and the air channel is used for enabling air to pass through and be sucked to be mixed with gas.
Specifically, an air channel 4 is arranged on the end surface of the nozzle body 1 provided with the spray holes 3, and the air channel 4 is a concave groove, is distributed among the spray holes 3 along the radial direction of the end surface and extends to the end part of the end surface;
therefore, after the nozzle is assembled with the ejector pipe of the burner in the gas stove, the gas is ejected into the columnar hole of the ejector pipe through the spray holes 3 and forms a negative pressure cavity in the columnar hole cavity, and the ambient air enters between the nozzle and the ejector pipe through the air channel 4 under the action of negative pressure and is mixed with the gas.
In order to increase the air flow rate, that is, to further enhance the effect of air entrainment, the air passages 4 are provided between every two of the nozzle holes 3, and a plurality of the air passages 4 communicate at the center of the end surface of the nozzle body 1.
That is, an air channel 4 is arranged between every two spray holes 3, a plurality of air channels 4 are distributed along the radial direction, and the center positions of the end surfaces of the nozzle bodies are communicated, so that no resistance caused by the fact that the air channels 4 are not communicated when air is sucked in a curling mode is ensured.
As shown in fig. 5, the gas flow dividing portion 2 includes a plurality of flow dividing pipes 21, and the flow dividing pipes 21 correspond to the nozzle holes 3 one by one, and center axes of the flow dividing pipes 21 and the nozzle holes 3 are aligned, that is, center axes of the flow dividing pipes and the nozzle holes coincide.
Specifically, gas reposition of redundant personnel portion 2 includes a plurality of shunt tubess 21, shunt tubess 21 and orifice 3 one-to-one, and both intercommunications, and shunt tubess 21 still aligns with the central axis of orifice 3, and also coincide, like this, gas gets into a plurality of shunt tubess 21, and the gas has been divided into many clusters this moment, then the gas enters into orifice 3 through shunt tubess 21, spouts again, forms a plurality of jet columns.
In a specific implementation, the shunt tube 21 includes a body 211 and at least one set of gas channels, and the gas channels are disposed in the body 211 in a penetrating manner.
Specifically, shunt tubes 21 includes body 211, sets up at least a set of gas passageway in the body 211, also can set up two sets of or three even more gas passageways of group, and multiunit gas passageway connects gradually, runs through and sets up in body 211.
In a specific embodiment, each set of the gas passages includes a branch hole 212 and a contraction hole 213, the branch hole 212 is a cylindrical hole, the contraction hole 213 has a tapered hole structure, the branch hole 212 is connected to an end face of the contraction hole 213 having a large diameter, the injection hole 3 is connected to an end face of the contraction hole 213 having a small diameter, that is, the end face of the contraction hole 213 having a small diameter is connected to the branch hole of the injection hole 3 or the adjacent gas passage.
That is, each set of gas passages includes the diverging holes 212 and the collapse holes 213, the diverging holes 212 are cylindrical holes, the collapse holes 213 are tapered holes, the end surfaces with a large diameter in the collapse holes 213 communicate with the diverging holes 212, the end surfaces with a small diameter communicate with the nozzle holes 3, and the conversion of the static pressure of the gas to the dynamic pressure is realized.
In specific implementation, in order to avoid the problem that the diameters of the diversion holes 212 and the spray holes 3 are different greatly when only one group of gas channels are arranged, so that gas transmission is not smooth, a plurality of groups of gas channels can be arranged;
as shown in fig. 5, set up two sets of gas passageways in the shunt tubes 21 promptly, body 211 in-connection is provided with one-level diffluence hole, one-level shrinkage cavity, second grade diffluence hole, second grade shrinkage cavity promptly, and one-level diffluence hole, one-level shrinkage cavity, second grade diffluence hole, second grade shrinkage cavity link up in proper order, have the process of diameter gradual change between one-level diffluence hole and the orifice, and the gas circulation is more unobstructed.
However, the gas passages of the present embodiment are not limited to one or two groups, and may be changed according to actual needs, for example, according to the diameter of the nozzle hole 3.
In order to realize the fixing of shunt tubes 21, gas reposition of redundant personnel portion 2 still includes fixed plate 22, fixed plate 22 with nozzle body 1 cooperation is connected, shunt tubes 21 evenly communicate set up in on fixed plate 22.
That is, the gas flow-dividing portion 2 is formed by combining a plurality of flow-dividing pipes 21 and fixing them to the fixing plate 22, the number of the flow-dividing pipes 21 is equal to the number of the injection holes 3, each flow-dividing pipe 21 includes a body 211 and at least one group of gas passages, and the retraction holes 212 in the gas passages are connected to the injection holes 3.
In order to realize the assembly of the gas shunting part 2, as shown in fig. 3 and 4, the gas shunting part further comprises a gas inlet hole 5, wherein the gas inlet hole 5 is of a cylindrical structure, and the gas inlet hole 5 penetrates through the nozzle body 1 and is communicated with the spray hole 3 to accommodate the gas shunting part 2.
As shown in fig. 4, a clamping groove 51 for fixing and limiting is arranged at an end of the air inlet 5 close to the end face of the nozzle body 1, and a lug 23 matched with the clamping groove 51 is correspondingly arranged on the gas shunting portion 2.
Specifically, a cylindrical through hole is arranged in the nozzle body 1 in a penetrating manner at one side far away from the spray hole 3, the cylindrical through hole is an air inlet hole 5, the air inlet hole 5 is communicated with the spray hole 3, a clamping groove 51 is arranged at the end part of the air inlet hole 5, the clamping groove 51 plays a positioning role and facilitates the placement of the gas shunting part 2, lugs 23 are correspondingly arranged at two sides of a fixing plate 22 in the gas shunting part 2, when the gas shunting part 2 is assembled, the gas shunting part 2 is placed into the air inlet hole 5, the lugs 23 are matched with the clamping groove 51, at the moment, the gas shunting part 2 is completely assembled, and the shunting pipe 21 is correspondingly communicated with the spray hole 3.
In this way, when the lug 23 is fitted to the neck 51, the retraction hole 212 of the gas flow-dividing portion 2 abuts against the nozzle hole 3, and the center axis of the flow-dividing pipe 21 is aligned with, i.e., coincides with, the center axis of the nozzle hole 3;
as shown in fig. 11, by such an assembly, the gas enters the plurality of spray holes 3 at the end part from the gas inlet 5 of the nozzle body 1 through each shunt pipe 21, when the gas flows through the gas shunt part 2, the flow channel sectional area of the shunt pipe 21 is gradually reduced, the flow speed is increased, a plurality of spray columns are formed when the gas flows out of the plurality of spray holes 3, the perimeter of the small spray column is increased compared with a single spray hole with the same area, the amount of air entrainment is increased, the air entrainment is more uniform due to the action of the plurality of spray holes 3, the primary air coefficient is increased, when the mixed gas with sufficient mixed gas and air enters the combustor for combustion, the combustion is more stable, complete and sufficient, and due to sufficient combustion, the emission of CO in the gas is lower, and the thermal efficiency is higher.
In specific implementation, the slot 51 is a straight groove, but the slot 51 is not limited to the above structure, and can be adjusted according to actual use requirements.
As shown in fig. 1, the nozzle body 1 includes a drainage portion 11, an assembly portion 12 and a connection portion 13, which are connected in sequence, the drainage portion 11 is a cylindrical structure and used for guiding air, the assembly portion 12 is a prismatic structure, an external thread is provided on the connection portion 13, and the assembly portion 12 and the connection portion 13 are used for mounting and limiting the nozzle body 1.
Specifically, the nozzle body 1 comprises three sections, namely a drainage part 11 with a cylindrical structure, an assembly part 12 with a prismatic structure and a connecting part 13 with a cylindrical structure, wherein the connecting part 13 is provided with external threads; the assembling part 12 is a prism structure, plays a role in assembling and holding, is convenient for a special tool (wrench) to insert and screw, and the connecting part 13 is used for entering and connecting with a nozzle seat and the like;
thus, during assembly, the assembly part 12 is rotated by a tool, and at the moment, the connection part 13 and the nozzle holder are gradually connected through threads, namely, the assembly part 12 and the connection part 13 are used for realizing the installation and the limiting of the nozzle body 1.
In order to better introduce air, the end of the drainage portion 11 is provided with a chamfer 111.
In a specific implementation, the chamfer 111 is located outside the drainage portion 11, i.e., the outer edge of the drainage portion 11 is chamfered.
In specific implementation, the number of the injection holes 3 is at least two, and may be three, four, or five, or even more, and the number of the injection holes 3 is not limited; but the sum of the areas of the orifices 3 is equal to the area of a single orifice of the known nozzle structure.
Fig. 7 to 10 are plan views of the case where the number of the injection holes 3 is two, three, four, and five, respectively, and it can be seen from fig. 7 to 10 that the injection holes 3 of the present embodiment are uniformly distributed along the circumferential direction of the nozzle body 1, and the air passages 4 are disposed between every two injection holes 3 and are distributed in the radial direction;
thus, the gas is sprayed out from the spray hole 3, the air is sucked in, enters through the air channel 4 and is mixed with the gas; each jet flow post all encloses the air all around promptly, and the mixed effect of air and gas is better.
The working principle is as follows: when the nozzle of the embodiment is used, gas enters the plurality of spray holes 3 at the end part from the gas inlet holes 5 in the nozzle body 1 through the shunt pipes 21 and is sprayed out of the spray holes 3 to form a plurality of spray columns, and air is sucked in through the air channel 4 and is mixed with the gas.
In the embodiment, a plurality of spray holes are formed in one side of the nozzle body, and the other side in the nozzle body is provided with the fuel gas shunting part correspondingly communicated with the spray holes, so that fuel gas is sprayed out of the spray holes through the fuel gas shunting part to form a plurality of spray columns, and air is sucked into the air coils and mixed with the fuel gas; therefore, by utilizing the flow equivalent law, the total circumference of the plurality of spray holes is increased when the plurality of spray holes are arranged relative to a single hole with the same area, the entrainment air quantity is increased, and the plurality of spray holes enable the entrainment air to be more uniform, so that the primary air coefficient is effectively increased, and the air and the fuel gas are more uniformly and fully mixed;
meanwhile, the air flow can be increased by arranging the air channel.
Example 2
In the specific implementation, the gas stove is provided with a combustor, and the nozzle body 1 is arranged on the nozzle seat and is opposite to an injection pipe of the combustor.
As shown in fig. 11, the fuel gas enters the nozzle hole 3 through the shunt pipe 21, and is ejected from the nozzle hole 3 to form a plurality of ejection columns, and enters the ejector pipe, that is, enters the cylindrical hole of the ejector pipe and forms a negative pressure cavity in the cylindrical hole cavity, and the ambient air enters between the nozzle and the ejector pipe through the air passage 4 under the negative pressure effect and is mixed with the fuel gas.
When the gas flows through the gas shunting part 2, because the flow path sectional area of the shunting pipe 21 is gradually reduced, the flow rate is increased, a plurality of jet flow columns are formed when the gas flows out of the plurality of jet holes 3, compared with a single jet hole with the same area, the small jet flow column cluster has the advantages that the circumference is increased, the entrainment air quantity is increased, because of the action of the plurality of jet holes 3, the entrainment air is more uniform, the primary air coefficient is increased, when the fully mixed gas of the gas and the air enters the combustor to be combusted, the combustion is more stable, complete and sufficient, because of sufficient combustion, the CO emission in the flue gas is lower, and the brought thermal efficiency is higher.
The gas stove of the embodiment is provided with the nozzle, the plurality of spray holes are formed in one side of the nozzle body, and the gas shunting part correspondingly communicated with the spray holes is formed in the other side in the nozzle body, so that gas is sprayed out of the spray holes through the gas shunting part to form a plurality of spray columns, and air is sucked into the gas coil and mixed with the gas; therefore, by utilizing the flow equivalent law, the total circumference of the plurality of spray holes is increased when the plurality of spray holes are arranged relative to a single hole with the same area, the entrainment air quantity is increased, and the plurality of spray holes enable the entrainment air to be more uniform, so that the primary air coefficient is effectively increased, and the air and the fuel gas are more uniformly and fully mixed;
meanwhile, the gas stove has the advantages that through the nozzle, the mixing effect of gas and air entering the combustor is better, the combustion is more stable, complete and sufficient, and due to the sufficient combustion, the emission of CO in the flue gas is lower, and the brought heat efficiency is higher.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A nozzle is used for a gas stove and is characterized by comprising a nozzle body (1), a gas shunting part (2) and a spray hole (3);
orifice (3) set up two at least, and along circumference evenly set up in inside one side of nozzle body (1), gas reposition of redundant personnel portion (2) set up in the inside opposite side of nozzle body (1), the gas output of gas reposition of redundant personnel portion (2) with the quantity of orifice (3) is unanimous, and corresponds the intercommunication, gas reposition of redundant personnel portion (2) with orifice (3) run through jointly nozzle body (1).
2. The nozzle according to claim 1, characterized in that it further comprises an air channel (4), said air channel (4) being arranged on the end surface of the nozzle body (1) close to the nozzle holes (3), said air channel (4) being arranged radially between the nozzle holes (3) and extending to the end for the air to pass through and be sucked in to mix with the gas.
3. The nozzle according to claim 2, wherein the air passage (4) is provided between every two of the nozzle holes (3), and a plurality of the air passages (4) communicate at the center of the end surface of the nozzle body (1).
4. The nozzle according to any one of claims 1 to 3, wherein the gas flow dividing portion (2) comprises a plurality of flow dividing pipes (21), and the flow dividing pipes (21) correspond to the nozzle holes (3) in a one-to-one manner, and the central axes of the flow dividing pipes and the nozzle holes coincide.
5. The nozzle according to claim 4, characterized in that said shunt tube (21) comprises a body (211) and at least one set of gas channels, said gas channels being arranged through said body (211).
6. The nozzle according to claim 5, characterized in that each group of the gas passages comprises a flow dividing hole (212) and a contraction hole (213), the flow dividing hole (212) is a cylindrical hole, the contraction hole (213) is a conical hole structure, the flow dividing hole (212) is connected with the end face with the larger diameter of the contraction hole (213), and the spray hole (3) is connected with the end face with the smaller diameter of the contraction hole (213).
7. The nozzle according to claim 4, characterized in that the gas flow-dividing portion (2) further comprises a fixing plate (22), the fixing plate (22) is connected with the nozzle body (1) in a matching manner, and the flow-dividing pipes (21) are uniformly communicated and arranged on the fixing plate (22).
8. The nozzle according to claim 7, further comprising an air inlet hole (5), wherein the air inlet hole (5) is of a cylindrical structure, and the air inlet hole (5) is penetratingly arranged in the nozzle body (1) and communicated with the spray hole (3) for accommodating the gas shunt part (2).
9. The nozzle according to claim 8, wherein a clamping groove (51) for fixing and limiting is arranged at the end part of the air inlet hole (5) close to the end face of the nozzle body (1), and a lug (23) matched with the clamping groove (51) is correspondingly arranged on the gas shunting part (2).
10. The nozzle according to claim 1, characterized in that the nozzle body (1) comprises a flow guiding part (11), an assembling part (12) and a connecting part (13) which are connected in sequence, the flow guiding part (11) is of a cylindrical structure and used for guiding air, the assembling part (12) is of a prismatic structure, an external thread is arranged on the connecting part (13), and the assembling part (12) and the connecting part (13) are used for mounting and limiting the nozzle body (1) together.
11. Nozzle according to claim 10, characterized in that the end of the flow guide (11) is provided with a chamfer (111).
12. A gas range using the nozzle according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042210.9A CN112197266A (en) | 2020-09-28 | 2020-09-28 | Nozzle and gas stove using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042210.9A CN112197266A (en) | 2020-09-28 | 2020-09-28 | Nozzle and gas stove using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112197266A true CN112197266A (en) | 2021-01-08 |
Family
ID=74006746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011042210.9A Pending CN112197266A (en) | 2020-09-28 | 2020-09-28 | Nozzle and gas stove using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112197266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923365A (en) * | 2021-02-01 | 2021-06-08 | 宁波方太厨具有限公司 | Ejector pipe and stove burner comprising same |
-
2020
- 2020-09-28 CN CN202011042210.9A patent/CN112197266A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923365A (en) * | 2021-02-01 | 2021-06-08 | 宁波方太厨具有限公司 | Ejector pipe and stove burner comprising same |
| CN112923365B (en) * | 2021-02-01 | 2022-03-08 | 宁波方太厨具有限公司 | Ejector pipe and stove burner comprising same |
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