Gas distribution device, mold, water heater and control method

Abstract

The invention relates to the field of household appliances, and discloses a gas distribution device, a mold, a water heater and a control method. The gas distribution device can ensure that the main gas channel and the first nozzle cavity are not communicated, the blow-by risk is reduced, the secondary pressure detection requirement can be met by increasing the caliber size of the connecting opening, the detection accuracy is improved, the load of the water heater is not increased, and flue gas emission meets the standard. The gas distribution device comprises a body, gas channels, nozzle cavities, nozzle assemblies and a reinforcing wall structure, the gas channels comprise the main gas channel and the first gas distribution channels, the main gas channel and the first gas distribution channels can be communicated or disconnected, the nozzle cavities comprise first nozzle cavities, the first nozzle cavities are communicated with the first gas distribution channels, and the nozzle assemblies comprise first nozzles. A part of the first nozzle and the side wall of the main air channel are connected and communicated to form a connecting opening, the reinforcing wall structure shares the side wall of the main air channel and the first nozzle cavity so that the main air channel and the first nozzle cavity can be independent of each other, and the reinforcing wall structure protrudes towards the inner side of at least one of the main air channel and the first nozzle cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to a gas distribution device, a mold, a water heater and a control method. Background Art

[0002] A gas water heater is a commonly used hot water preparation device in households. It works by using gas as fuel, transferring heat through combustion heating to cold water flowing through a heat exchanger to achieve the purpose of preparing hot water.

[0003] The gas distributor (or gas distributor rod) is one of the core components of the gas water heater, which is mainly used for gas distribution and can improve the combustion efficiency of the gas. The working principle of the gas distributor rod is that after the gas enters the main gas duct of the gas distributor rod, it flows out through the nozzles of the gas distributor rod and sprays toward the burner, thereby distributing the gas source for the burner combustion. The existing gas distributor rod is provided with a nozzle on the main gas duct, through which the secondary pressure can be detected. If the flow diameter between the main gas duct and the nozzle is too small, it will cause the water heater load to exceed the standard and the flue gas to exceed the standard when the secondary pressure meets the requirements. If the flow diameter between the main gas duct and the nozzle is too large, it will easily cause the side wall of the main gas duct to rupture, and there is a risk of cross-flow. Summary of the invention

[0004] In view of this, the present invention provides an air distribution device, a mold, a water heater and a control method to solve the problem that the existing air distribution rod is prone to cause excessive water heater load or rupture of the side wall of the main air duct during secondary pressure detection.

[0005] In a first aspect, the present invention provides a gas separation device, comprising:

[0006] ontology;

[0007] An airway is arranged in the body, the airway comprises a main airway and a first branch airway, and the main airway and the first branch airway can be connected or disconnected;

[0008] A nozzle chamber is disposed in the body, the nozzle chamber includes a first nozzle chamber, and the first nozzle chamber is communicated with the first air channel;

[0009] A nozzle assembly is arranged on the body, the nozzle assembly includes a first nozzle, a portion of the first nozzle intersects and communicates with the side wall of the main airway to form an interfacing interface;

[0010] The reinforcing wall structure is a common side wall of the main air channel and the first nozzle chamber, so that the main air channel and the first nozzle chamber are independent of each other, and the reinforcing wall structure protrudes toward the inner side of at least one of the main air channel and the first nozzle chamber.

[0011] Beneficial effect: In the gas distribution device of the present invention, the common side wall of the main air duct and the first nozzle chamber is a reinforced wall structure, and the reinforced wall structure protrudes toward the inner side of at least one of the main air duct and the first nozzle chamber to increase the thickness and strength of the common side wall of the main air duct and the first nozzle chamber, ensuring that the main air duct and the first nozzle chamber are independent of each other and will not be connected, thereby reducing the risk of cross-gas. At this time, the caliber size of the interface can be appropriately increased to meet the secondary pressure detection requirements and improve the detection accuracy without increasing the load of the water heater and ensuring that the flue gas emissions meet the standard requirements.

[0012] In an optional embodiment, the reinforcing wall structure protrudes toward the inner side of the main air passage, and the cross-sectional area of ​​a portion of the main air passage provided with the reinforcing wall structure decreases along the gas flow direction.

[0013] Beneficial effect: In the gas distribution device of the present invention, since the setting space in the main airway is larger than the setting space in the first nozzle chamber, the reinforced wall structure protrudes toward the inner side of the main airway to reduce the influence of the reinforced wall structure on the gas source distribution, and the cross-sectional area of ​​the part of the main airway where the reinforced wall structure is set becomes smaller along the gas flow direction. The reinforced wall structure of this setting method will not hinder the flow of the main airway gas, so as to ensure smooth circulation of the main airway gas.

[0014] In an optional embodiment, the reinforced wall structure includes a reinforced surface, the reinforced surface is a plane, and the reinforced surface is arranged at an angle with the axial direction of the main airway.

[0015] Beneficial effect: The gas separation device of the present invention has a reinforced wall structure including a reinforced surface, and the reinforced surface is preferably a plane. This reinforced wall structure is easier to process and shape, which can reduce the processing difficulty and cost, and the reinforced surface is set at an angle to the axis of the main airway, that is, the reinforced surface is an inclined surface in the main airway, which does not affect the flow of the main airway gas, thereby ensuring the gas source distribution process of the gas separation device.

[0016] In an optional implementation, the reinforcement surface is arranged opposite to the interface.

[0017] Beneficial effect: The gas distribution device of the present invention has a reinforced surface arranged relative to the interface, so that after the gas flows to the reinforced surface, the reinforced surface can guide the gas, allowing more and faster fuel gas to enter the interface, which is beneficial to improving the gas distribution efficiency and improving the secondary pressure detection efficiency.

[0018] In an optional embodiment, the reinforced wall structure includes a reinforced surface, and the reinforced surface is a curved surface or a stepped surface.

[0019] Beneficial effect: The gas distribution device of the present invention has a reinforced wall structure including a reinforced surface, which can also be a curved surface or a stepped surface, both of which can effectively increase the thickness and strength of the side wall shared by the main air duct and the first nozzle chamber, ensure that the main air duct and the first nozzle chamber are independent of each other and will not be connected, thereby reducing the risk of cross-gas. Therefore, the caliber size of the interface can be appropriately increased to meet the secondary pressure detection requirements, improve the detection accuracy, and at the same time not increase the load of the water heater, and make the flue gas emissions meet the standard requirements.

[0020] In an optional embodiment, it further includes a secondary pressure detection port, which is disposed on the body and is connected to the first nozzle.

[0021] Beneficial effects: The gas distribution device of the present invention is provided with a secondary pressure detection port for performing secondary pressure detection to ensure safe use of the gas distribution device and the water heater.

[0022] In an optional embodiment, the air channel further includes a second sub-air channel, and the first sub-air channel and the second sub-air channel can be connected or disconnected; the nozzle chamber further includes a second nozzle chamber, the second nozzle chamber is arranged adjacent to the first nozzle chamber, and the second nozzle chamber is connected to the second sub-air channel;

[0023] The gas separation device also includes:

[0024] At least two assembly structures are arranged at intervals on the inner wall of the intersection of the first nozzle cavity and the second nozzle cavity;

[0025] The blocking member can be selectively installed in cooperation with one of the assembly structures to adjust the number of nozzles that can be arranged on the side walls of the first nozzle chamber and the second nozzle chamber.

[0026] Beneficial effect: The gas separation device of the present invention is provided with at least two assembly structures inside the main body, and at least two assembly results are arranged at intervals on the inner wall of the intersection of the first nozzle cavity and the second nozzle cavity. The sealing piece can be selectively installed in conjunction with one of the assembly structures. The sealing piece cooperates with different assembly structures to adjust the number of nozzles that can be set on the side walls of the first nozzle cavity and the second nozzle cavity. Different numbers of nozzles can match gas water heaters of different powers, so that the gas separation device can be suitable for gas water heaters of different powers, with high manufacturing flexibility and a wide range of applications. There is no need to separately open a mold or cast a gas separation device that matches the gas water heater of each load, so that one mold can produce gas separation devices with different needs, which greatly simplifies the manufacturing process and manufacturing costs.

[0027] In an optional embodiment, the assembly structure includes a step protruding from the inner wall of the intersection of the first nozzle cavity and the second nozzle cavity.

[0028] Beneficial effects: The gas separation device of the present invention has an assembly structure including a step protruding from the inner wall of the intersection of the first nozzle chamber and the second nozzle chamber. This assembly structure is simple and reliable, easy to process and shape, and is conducive to reducing manufacturing costs.

[0029] In an optional embodiment, the inner diameter of the step is larger as it is closer to the second nozzle chamber.

[0030] Beneficial effect: In the gas distribution device of the present invention, since the second nozzle cavity is closer to the operating port than the first nozzle cavity, the inner diameter of the step closer to the second nozzle cavity is larger, which can facilitate the subsequent adjustment of the position of the blocking part and simplify the operation difficulty.

[0031] In an optional embodiment, the side walls of the first nozzle chamber and the second nozzle chamber are each provided with at least two nozzles.

[0032] Beneficial effects: The gas separation device of the present invention is provided with at least two nozzles on the side walls of the first nozzle cavity and the second nozzle cavity, so as to be suitable for gas water heaters of different powers.

[0033] In an optional embodiment, the assembly structure includes a first step and a second step, the first step is closer to the second nozzle chamber than the second step; the blocking member is installed in cooperation with the first step, and the side walls of the first nozzle chamber and the second nozzle chamber are each provided with two of the nozzles; or, the blocking member is installed in cooperation with the second step, the side wall of the first nozzle chamber is provided with two of the nozzles, and the side wall of the second nozzle chamber is provided with three of the nozzles.

[0034] Beneficial effect: The gas distribution device of the present invention has an assembly structure including a first step and a second step, and the first step is closer to the second nozzle chamber than the second step. At this time, when the blocking member is installed in cooperation with the first step or the second step, the number of nozzles arranged on the side walls of the first nozzle chamber and the second nozzle chamber can be adjusted. Specifically, the blocking member is installed in cooperation with the first step, and the side walls of the first nozzle chamber and the second nozzle chamber are both provided with two nozzles. This gas distribution device is suitable for 30kW 16-liter gas water heaters; or, the blocking member is installed in cooperation with the second step, and the side walls of the first nozzle chamber are provided with two nozzles, and the side walls of the second nozzle chamber are provided with three nozzles. This gas distribution device is suitable for 34kW 18-liter gas water heaters.

[0035] In an optional embodiment, the air channel further includes a third sub-air channel, the third sub-air channel can be connected or disconnected with the main air channel, and a second nozzle is provided on a side wall of the third sub-air channel.

[0036] Beneficial effect: The gas distribution device of the present invention, the gas duct also includes a third gas distribution duct, the third gas distribution duct and the main gas duct can be connected or disconnected, the side wall of the third gas distribution duct is provided with a second nozzle, when the first nozzle and the second nozzle spray, it is the second fire power gear (medium or small fire working state) of the gas water heater, meeting the different usage requirements of users.

[0037] In the second aspect, the present invention also provides a mold for manufacturing the above-mentioned air separation device, the mold comprising a mold body and a first core-pulling part, the first core-pulling part is connected to the mold body, and the first core-pulling part has a first molding structure matching the reinforced wall structure of the air separation device.

[0038] Beneficial effect: The mold of the present invention can manufacture the air separation device of the present invention. The first core-pulling portion of the mold has a first molding structure that matches the reinforced wall structure of the air separation device to increase the thickness and strength of the side wall shared by the main air duct and the first nozzle chamber of the air separation device, ensuring that the main air duct and the first nozzle chamber are independent of each other and will not be connected, thereby reducing the risk of cross-gas. At this time, the caliber size of the interface can be appropriately increased to meet the secondary pressure detection requirements and improve the detection accuracy without increasing the load of the water heater and ensuring that the flue gas emissions meet the standard requirements.

[0039] In an optional embodiment, it further includes a second core-pulling part, which is connected to the mold body, and the outer wall of the second core-pulling part is formed with a second molding structure that matches the assembly structure of the gas separation device.

[0040] Beneficial effect: The mold of the present invention also includes a second core-pulling part, which can form at least two assembly structures at one time, so that the gas distribution device can be suitable for gas water heaters of different powers, with high manufacturing flexibility and a wide range of applications. There is no need to separately open molds and cast gas distribution devices that match gas water heaters of each load, so that one mold can produce gas distribution devices with different needs, which greatly simplifies the manufacturing process and manufacturing costs.

[0041] In a third aspect, the present invention further provides a water heater, comprising the gas separation device as described above.

[0042] Because the water heater of the present invention, including the gas separation device of the present invention, has the same beneficial effects as the gas separation device, it will not be described in detail here.

[0043] In a fourth aspect, the present invention further provides a control method for controlling the above-mentioned gas distribution device or for controlling the above-mentioned water heater, the control method comprising:

[0044] When the first fire gear is in operation, the first nozzle of the main airway supplies air;

[0045] When the second fire gear is in operation, the first nozzle and the second nozzle of the third air distribution channel supply air;

[0046] When the third fire gear is in operation, the first nozzle, the second nozzle and the two nozzles of the first nozzle chamber supply air;

[0047] When the fourth fire power gear is operated, the first nozzle, the second nozzle, at least two nozzles of the first nozzle chamber and at least two nozzles of the second nozzle chamber supply air.

[0048] Beneficial effects: The control method of the present invention has 1, 2, 4 and at least 6 nozzles jetting at the first to fourth power gears, respectively. Since different power gears from small to large correspond to different combustion states, each gear has its corresponding power segment, and there is overlap between adjacent gears. If the overlapping area is too small, when the required power is near the overlap area of ​​the two, it is easy to cause the two states to switch back and forth frequently, resulting in large fluctuations in water temperature, frequent switching sounds of the solenoid valve affecting user experience, etc. The control method of the present invention is used to control the gas distribution device of the present invention or to control the water heater of the present invention, especially when switching between the second and third power gears, the overlapping area between the two is large, and the difference in nozzle gas supply load is not very large, which can ensure that the combustion state can be stably switched as the required power changes, and it is not easy to extinguish the flame. Moreover, the water temperature fluctuation will not be large during the switching adjustment, so that the small fire is not hot and the large fire is hot enough, so that the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 It is an overall schematic diagram of the gas separation device of the present invention;

[0051] Figure 2 A cross-sectional view of the gas separation device of the present invention Figure 1 ;

[0052] Figure 3 A cross-sectional view of the gas separation device of the present invention Figure 2 ;

[0053] Figure 4 for Figure 3 An enlarged schematic diagram of part A (the plugging piece and the nozzle are omitted);

[0054] Figure 5 It is an overall schematic diagram of another embodiment of the gas separation device of the present invention;

[0055] Figure 6 A cross-sectional view of another embodiment of the gas separation device of the present invention Figure 1 ;

[0056] Figure 7 for Figure 6 A magnified schematic diagram of part B;

[0057] Figure 8 A cross-sectional view of another embodiment of the gas separation device of the present invention Figure 2 ;

[0058] Fig. 9 for Figure 8 A magnified schematic diagram of part C;

[0059] Fig.10 for Figure 8 The enlarged schematic diagram of the D part;

[0060] Fig.11 A cross-sectional view of another embodiment of the gas separation device of the present invention Figure 3 ;

[0061] Fig.12 It is a partial structural schematic diagram of the mold of the present invention.

[0062] Description of reference numerals:

[0063] 1. Ontology;

[0064] 201, main airway; 202, first sub-airway; 203, second sub-airway; 204, third sub-airway;

[0065] 301, first nozzle chamber; 302, second nozzle chamber; 303, third nozzle chamber;

[0066] 4. Blocking parts;

[0067] 501, first nozzle; 502, second nozzle; 503, third nozzle; 504, fourth nozzle; 505, fifth nozzle; 506, sixth nozzle; 507, seventh nozzle;

[0068] 6. The second core pulling part;

[0069] 701, first solenoid valve; 702, second solenoid valve; 703, third solenoid valve;

[0070] 801, first step; 802, second step;

[0071] 9. Interface;

[0072] 10. Strengthen the surface;

[0073] 11. Secondary pressure detection port;

[0074] 12. Secondary pressure detection chamber. DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0076] On the market, the gas distribution rod is provided with a nozzle on the main air duct, and the secondary pressure test can be performed through the main air duct nozzle. If the flow diameter of the main air duct and the nozzle is too small, the amount of gas entering the secondary pressure measuring port through it is too little, and the gas pressure is very low. When the secondary pressure is adjusted to the required value, the gas flow through the main air duct increases, and accordingly, the gas pressure also increases, which will cause the load of the water heater to increase and the flue gas to exceed the standard; and if the inner diameter of the main air duct is increased to increase the flow diameter of the main air duct and the nozzle, it is easy to cause the side wall of the main air duct to be too thin and easy to rupture, so that the main air duct and the chamber set on one side are connected, and the nozzle of the chamber also becomes a normally open nozzle, which does not meet the requirements of segmented and small-load water heaters, resulting in a poor user experience.

[0077] Based on this, this embodiment provides a gas distribution device, a mold, a water heater and a control method.

[0078] Combine the following Figure 1-Figure 12 , describing embodiments of the gas distribution device, mold, water heater and control method of the present invention.

[0079] According to an embodiment of the present invention, there is provided an air distribution device, comprising: a main body 1, an air duct, a nozzle chamber, a nozzle assembly and a reinforcing wall structure, wherein the air duct is arranged in the main body 1, the air duct comprises a main air duct 201 and a first sub-air duct 202, the main air duct 201 and the first sub-air duct 202 can be connected or disconnected, the nozzle chamber is arranged in the main body 1, the nozzle chamber comprises a first nozzle chamber 301, and the first nozzle chamber 301 is connected to the first sub-air duct 202; the nozzle assembly is arranged in the main body 1, the nozzle assembly comprises a first nozzle 501, a part of the first nozzle 501 is connected to the side wall of the main air duct 201 and is connected to form a junction 9, the reinforcing wall structure is a common side wall of the main air duct 201 and the first nozzle chamber 301, so that the main air duct 201 and the first nozzle chamber 301 are independent of each other, and the reinforcing wall structure protrudes toward the inner side of at least one of the main air duct 201 and the first nozzle chamber 301.

[0080] In this gas distribution device, the common side wall of the main air duct 201 and the first nozzle chamber 301 is a reinforced wall structure, which protrudes toward the inner side of at least one of the main air duct 201 and the first nozzle chamber 301 to increase the thickness and strength of the common side wall of the main air duct 201 and the first nozzle chamber 301, ensuring that the main air duct 201 and the first nozzle chamber 301 are independent of each other and will not be connected, thereby reducing the risk of cross-gas. At this time, the caliber size of the interface 9 can be appropriately increased to meet the secondary pressure detection requirements and improve the detection accuracy without increasing the load of the water heater and ensuring that the flue gas emissions meet the standard requirements.

[0081] Secondary pressure detection refers to a test of the gas pressure after passing through the gas distribution device.

[0082] like Figure 1 As shown, the gas distributor is a T-shaped structure as a whole, and is used to distribute gas to the burner. The gas distributor is made of metal material as a whole, and includes a body 1, and the body 1 includes a first part 101 and a second part 102. In this embodiment, the first part 101 and the second part 102 are arranged perpendicular to each other.

[0083] The air channel is arranged in the main body 1, the air inlet of the air channel is suitable for being connected with the air source supply part, and the air outlet of the air channel is each nozzle. Figure 2-Figure 3 As shown, the airway includes a main airway 201 and a first sub-airway 202. The main airway 201 is arranged in the first part 101, and the main airway 201 is arranged along the length direction of the first part 101. The first sub-airway 202 is arranged in the second part 102, and the first sub-airway 202 is arranged along the length direction perpendicular to the second part 102. Since the first part 101 and the second part 102 are arranged perpendicular to each other, the first sub-airway 202 is arranged parallel to the main airway 201.

[0084] The first branch air duct 202 is arranged close to the main air duct 201, and the main air duct 201 and the first branch air duct 202 can be connected or disconnected. When the main air duct 201 and the first branch air duct 202 are connected, the gas in the main air duct 201 can enter the first branch air duct 202, and when the main air duct 201 and the first branch air duct 202 are disconnected, the gas in the main air duct 201 cannot enter the first branch air duct 202.

[0085] In this embodiment, the main air channel 201 and the first branch air channel 202 are connected or disconnected via the first solenoid valve 701 , that is, the first solenoid valve 701 can control the connection and disconnection of the main air channel 201 and the first branch air channel 202 .

[0086] The nozzle cavity is arranged in the second part 102, and the nozzle cavity is used to connect the gas channel and the corresponding nozzle, so that the gas in the gas channel is ejected from the nozzle. Specifically, the nozzle cavity includes a first nozzle cavity 301, and the first nozzle cavity 301 is connected to the first branch gas channel 202. The first nozzle cavity 301 is arranged along the length direction of the second part 102, and the first nozzle cavity 301 is arranged adjacent to the main gas channel 201.

[0087] The nozzle assembly is arranged on the body 1, and the nozzle assembly includes a first nozzle 501, and the first nozzle 501 intersects and communicates with the side wall of the main gas channel 201 to form an interface 9. In this embodiment, the first nozzle 501 is arranged on the side wall of the main gas channel 201, and the first nozzle 501 is communicated with the main gas channel 201. Specifically, the first nozzle 501 is communicated with the main gas channel 201 through the interface 9. The first nozzle 501 is a normally open nozzle, which is suitable for the first fire gear (low fire working state) of the gas water heater to meet the user's demand for using low fire. The setting position of the first nozzle 501 needs not to affect the setting of other gas channels.

[0088] The diameter of the interface 9 depends on the size of the intersection area between the first nozzle 501 and the side wall of the main gas channel 201. It can be understood that the larger the diameter of the interface 9, the larger the flow area of ​​the interface 9, and the smaller the gas pressure entering the first nozzle 501 from the main gas channel 201, that is, the flow area of ​​the interface 9 is inversely proportional to the gas pressure entering the first nozzle 501.

[0089] In order to increase the diameter of the interface 9, it can be achieved by increasing the inner diameter of the main air channel 201, that is, the setting position of the first nozzle 501 remains unchanged, and the inner diameter of the main air channel 201 is enlarged, so that the intersection area between the first nozzle 501 and the side wall of the main air channel 201 is increased, thereby increasing the diameter and flow area of ​​the interface 9.

[0090] However, in order to increase the diameter of the interface 9 and the inner diameter of the main air channel 201, the side wall between the main air channel 201 and the first nozzle chamber 301 may become thinner, or even the main air channel 201 may directly penetrate the side wall and communicate with the first nozzle chamber 301. For this reason, the gas separation device of this embodiment is provided with a reinforced wall structure.

[0091] The reinforcing wall structure is a common side wall of the main airway 201 and the first nozzle chamber 301, that is, the side of the reinforcing wall structure facing the main airway 201 constitutes a part of the inner wall of the main airway 201, and the side of the reinforcing wall structure facing the first nozzle chamber 301 constitutes a part of the inner wall of the first nozzle chamber 301. The reinforcing wall structure separates the main airway 201 and the first nozzle chamber 301 into two independent structures that are not connected to each other. In addition, the reinforcing wall structure protrudes toward the inner side of at least one of the main airway 201 and the first nozzle chamber 301 to increase the thickness of the common side wall of the main airway 201 and the first nozzle chamber 301, thereby increasing the structural strength of the common side wall of the main airway 201 and the first nozzle chamber 301. When the inner diameter of the main airway 201 is increased in order to increase the diameter of the interface 9, the shared side wall of the main airway 201 and the first nozzle chamber 301 has sufficient thickness to meet the diameter expansion requirement of the main airway 201, so that the shared side wall between the main airway 201 and the first nozzle chamber 301 will not be damaged, thereby ensuring the independence of the two and greatly reducing the risk of cross-talk.

[0092] Further, the reinforcing wall structure protrudes toward the inner side of the main air passage 201, and the cross-sectional area of ​​the portion of the main air passage 201 provided with the reinforcing wall structure becomes smaller along the gas flow direction.

[0093] In some embodiments, the reinforced wall structure may protrude toward the inner side of the main air duct 201 and toward the inner side of the first nozzle cavity 301. In some embodiments, the reinforced wall structure may protrude only toward the inner side of the first nozzle cavity 301. In the present embodiment, the reinforced wall structure protrudes only toward the inner side of the main air duct 201, so that the cross-sectional area of ​​the portion of the main air duct 201 where the reinforced wall structure is provided is smaller than the cross-sectional area of ​​other portions of the main air duct 201.

[0094] In addition, the cross-sectional area of ​​the portion of the main gas passage 201 provided with the reinforced wall structure decreases along the gas flow direction. Figure 3 As shown by the arrow in the main airway 201. Figure 3 From the perspective shown, the reinforced wall structure is arranged at the lower position of the main air duct 201, and the gas flows downward. The cross-sectional area of ​​the portion of the main air duct 201 where the reinforced wall structure is arranged is the cross-sectional area of ​​the reinforced wall structure perpendicular to the axial direction of the main air duct 201, and the cross-sectional area of ​​the portion of the main air duct 201 where the reinforced wall structure is arranged becomes smaller and smaller in the downward direction.

[0095] Optionally, the cross-sectional area of ​​the portion of the main air passage 201 provided with the reinforcing wall structure gradually and evenly decreases in the downward direction to make the airflow more uniform.

[0096] Furthermore, the reinforced wall structure includes a reinforced surface 10 , which is a plane and is arranged at an angle with the axial direction of the main air channel 201 .

[0097] The reinforced wall structure includes a reinforced surface 10, which is disposed in the main air passage 201 and / or in the first nozzle chamber 301. In the present embodiment, the reinforced surface 10 is disposed in the main air passage 201, and the reinforced surface 10 is a part of the inner wall of the main air passage 201. The reinforced surface 10 is arranged at an angle with the axial direction of the main air passage 201, that is, the reinforced surface 10 is an inclined plane obliquely disposed in the main air passage 201. This reinforced wall structure is easier to process and shape, and can reduce the processing difficulty and processing cost of the gas separation device.

[0098] like Figure 2-Figure 3 As shown, the distance between the upper end of the reinforced surface 10 and the axis of the main gas channel 201 is greater than the distance between the lower end of the reinforced surface 10 and the axis of the main gas channel 201. In this embodiment, the lower end of the reinforced surface 10 is located at the axis of the main gas channel 201. The reinforced surface 10 arranged in this way does not affect the flow of gas in the main gas channel 201, ensuring smooth gas distribution process of the gas distribution device.

[0099] Furthermore, the reinforcement surface 10 is arranged opposite to the interface 9 .

[0100] The reinforced surface 10 is arranged relative to the interface 9, so that after the gas flow reaches the reinforced surface 10, the reinforced surface 10 can guide the gas and make the gas flow in the direction of entering the interface 9, so that more gas can enter the interface 9 faster, which is beneficial to improving the gas distribution efficiency and improving the secondary pressure detection efficiency.

[0101] Specifically, the reinforcement surface 10 and the interface 9 are not arranged directly opposite to each other. Since the reinforcement surface 10 is an inclined plane, the reinforcement surface 10 and the interface 9 are arranged obliquely to each other.

[0102] In other embodiments, the reinforced wall structure includes a reinforced surface 10, and the reinforced surface 10 is a curved surface or a stepped surface, as long as the reinforced surface 10 is ensured to protrude from the inner wall of the main airway 201 and / or the inner wall of the first nozzle cavity 301. The reinforced surface 10 is a curved surface or a stepped surface, which can effectively increase the thickness and strength of the common side wall of the main airway 201 and the first nozzle cavity 301, ensure that the main airway 201 and the first nozzle cavity 301 are independent of each other and will not be connected, and reduce the risk of cross-gas. Therefore, the caliber size of the interface can be appropriately increased to meet the secondary pressure detection requirements, improve the detection accuracy, and at the same time do not increase the load of the water heater, and make the smoke emission meet the standard requirements.

[0103] Furthermore, the diameter of the interface 9 is equal to the diameter of the first nozzle 501 .

[0104] When the diameter of the interface 9 is equal to the diameter of the first nozzle 501, the diameter of the interface 9 is the maximum diameter, which can fully meet the secondary pressure detection requirements, while not increasing the water heater load and ensuring that the water heater smoke emissions meet the standards.

[0105] Furthermore, the gas separation device of this embodiment further includes a secondary pressure detection port 11 , which is disposed on the body 1 and communicates with the first nozzle 501 .

[0106] The secondary pressure detection port 11 is used for secondary pressure detection, and the secondary pressure detection port 11 is arranged on the body 1. Specifically, a secondary pressure detection chamber 12 is arranged on the body 1, and the air inlet of the secondary pressure detection chamber 12 is connected to the first nozzle 501, and the air outlet of the secondary pressure detection chamber 12 is the secondary pressure detection port 11. When performing secondary pressure detection, the gas of the main gas channel 201 can enter the secondary pressure detection chamber 12 through the interface 9 and the first nozzle 501 in sequence, and then the gas is output from the secondary pressure detection port 11, so as to perform secondary pressure detection.

[0107] Furthermore, the air channel also includes a second sub-air channel 203, and the first sub-air channel 202 and the second sub-air channel 203 can be connected or disconnected. The nozzle chamber also includes a second nozzle chamber 302, and the second nozzle chamber 302 is adjacent to the first nozzle chamber 301, and the second nozzle chamber 302 is connected to the second sub-air channel 203.

[0108] The gas separation device of this embodiment also includes: at least two assembly structures and a sealing member 4, and the at least two assembly structures are arranged at intervals on the inner wall of the intersection of the first nozzle chamber 301 and the second nozzle chamber 302; the sealing member 4 can be selectively installed in conjunction with one of the assembly structures to adjust the number of nozzles that can be set on the side walls of the first nozzle chamber 301 and the second nozzle chamber 302.

[0109] At least two assembly structures are arranged at intervals on the inner wall of the intersection of the first nozzle cavity 301 and the second nozzle cavity 302. The first nozzle cavity 301 and the second nozzle cavity 302 are arranged adjacent to each other, and there is an intersection between the two, and the assembly structure is arranged at the intersection. The blocking member 4 can be selectively installed in conjunction with one of the assembly structures. When the blocking member 4 is installed in conjunction with a certain assembly structure, the blocking member 4 serves as a common wall of the first nozzle cavity 301 and the second nozzle cavity 302, which can make the first nozzle cavity 301 and the second nozzle cavity 302 independent of each other and not interfere with each other. In this embodiment, the blocking member 4 is specifically a plugging cover.

[0110] This gas separation device is also provided with at least two assembly structures inside the main body 1, and at least two assembly results are arranged at intervals on the inner wall of the intersection of the first nozzle cavity 301 and the second nozzle cavity 302. The sealing member 4 can be selectively installed in conjunction with one of the assembly structures. The sealing member 4 cooperates with different assembly structures to adjust the number of nozzles that can be set on the side walls of the first nozzle cavity 301 and the second nozzle cavity 302. Different numbers of nozzles can match gas water heaters of different powers, so that this gas separation device can be suitable for gas water heaters of different powers, with high manufacturing flexibility and a wide range of applications. There is no need to separately open a mold or cast a gas separation device that matches a gas water heater of each load, so that one mold can produce gas separation devices with different requirements, which greatly simplifies the manufacturing process and manufacturing costs.

[0111] The second gas channel 203 is arranged in the second part 102, and the second gas channel 203 is arranged along a length direction perpendicular to the second part 102. The first gas channel 202 is arranged closer to the main gas channel 201 than the second gas channel 203. The first gas channel 202 and the second gas channel 203 can be connected or disconnected. When the first gas channel 202 and the second gas channel 203 are connected, the gas in the first gas channel 202 can enter the second gas channel 203, and when the first gas channel 202 and the second gas channel 203 are disconnected, the gas in the first gas channel 202 cannot enter the second gas channel 203. Specifically, the first gas channel 202 and the second gas channel 203 are connected or disconnected through the second solenoid valve 702, that is, the second solenoid valve 702 can control the connection and disconnection of the first gas channel 202 and the second gas channel 203.

[0112] The second nozzle chamber 302 is in communication with the second branch air channel 203 . The second nozzle chamber 302 is disposed along the length direction of the second portion 102 . The first nozzle chamber 301 is disposed closer to the main air channel 201 than the second nozzle chamber 302 .

[0113] At least two assembly structures are arranged at intervals, specifically, at least two assembly structures are arranged at intervals along the length direction of the second part 102, so that when the sealing member 4 cooperates with different assembly structures, the number of nozzles that can be set on the side walls of the first nozzle cavity and the second nozzle cavity can be adjusted, and different numbers of nozzles can match gas water heaters of different powers, so that this gas separation device can be suitable for gas water heaters of different powers, with high manufacturing flexibility and a wide range of applications, so that a mold can be used to manufacture gas separation devices with different needs, which greatly simplifies the manufacturing process and manufacturing costs.

[0114] Furthermore, the blocking member 4 can be selectively installed in cooperation with one of the assembly structures, and the number of nozzles that can be set on the side walls of the first nozzle cavity 301 and the second nozzle cavity 302 can be adjusted by adjusting the side wall areas of the first nozzle cavity 301 and the second nozzle cavity 302.

[0115] At least two assembly structures are arranged at intervals along the length direction of the second part 102. When the sealing member 4 is installed in conjunction with different assembly structures, the internal volumes of the first nozzle cavity 301 and the second nozzle cavity 302 will change accordingly, while the inner diameters of the first nozzle cavity 301 and the second nozzle cavity 302 remain unchanged. Therefore, the sealing member 4 is installed in conjunction with different assembly structures to change the side wall areas of the first nozzle cavity 301 and the second nozzle cavity 302. The side walls of the first nozzle cavity 301 and the second nozzle cavity 302 will form nozzles. The side wall areas of the first nozzle cavity 301 and the second nozzle cavity 302 change, and the number of nozzles that can be set on the side walls of the corresponding first nozzle cavity 301 and the second nozzle cavity 302 will also change. Different numbers of nozzles can match gas water heaters of different powers, thereby realizing a mold that can manufacture gas distributors with different needs. This gas distributor has a simple structure, is easy to manufacture, and does not increase manufacturing costs.

[0116] Further, the assembly structure is disposed between the communication position between the first nozzle cavity 301 and the first branch gas channel 202 , and between the communication position between the second nozzle cavity 302 and the second branch gas channel 203 .

[0117] Since the first nozzle chamber 301 is connected to the first gas channel 202, and the second nozzle chamber 302 is connected to the second gas channel 203, there is a connecting position between the first nozzle chamber 301 and the first gas channel 202, which is called the first connecting position. Similarly, there is also a connecting position between the second nozzle chamber 302 and the second gas channel 203, which is called the second connecting position. The assembly structure is arranged between the first connecting position and the second connecting position so that the assembly structure will not affect the first connecting position and the second connecting position, thereby avoiding the assembly structure affecting the connection between the first nozzle chamber 301 and the first gas channel 202, or affecting the connection between the second nozzle chamber 302 and the second gas channel 203, so as to ensure the smoothness of the gas passage.

[0118] Furthermore, the assembly structure includes a step protruding from the inner wall of the junction of the first nozzle cavity 301 and the second nozzle cavity 302 .

[0119] In this embodiment, the assembly structure is a step structure, that is, the assembly structure includes a step, which protrudes from the inner wall at the junction of the first nozzle chamber 301 and the second nozzle chamber 302. This assembly structure is easy to process and form, has a simple structure and high reliability, and can reduce the manufacturing cost of the gas separation device.

[0120] Furthermore, the inner diameters of the steps are different.

[0121] There are at least two assembly structures, that is, at least two steps, and the inner diameters of the steps are different, so as to achieve the coordinated installation of different steps and the blocking member 4, thereby conveniently achieving the adjustment of the number of nozzles that can be set on the side walls of the first nozzle chamber 301 and the second nozzle chamber 302, which is conducive to reducing the difficulty of operation.

[0122] Furthermore, the inner diameter of the step closer to the second nozzle chamber 302 is larger.

[0123] like Figure 1-Figure 3 As shown, taking the illustrated angle as an example, the left end of the second part 102 of the gas distribution device is the operating port, and the second nozzle chamber 302 is arranged closer to the operating port than the first nozzle chamber 301. In order to enable the blocking member 4 to be installed in coordination with each step, the inner diameter of the step closer to the second nozzle chamber 302 is larger to facilitate the installation operation.

[0124] Optionally, the assembly structure includes a first step 801 and a second step 802, and the first step 801 is closer to the second nozzle chamber 302 than the second step 802. Figure 4 As shown, the inner diameter of the first step 801 is φC, and the inner diameter of the second step 802 is φD, φC>φD, that is, the inner diameter of the first step 801 is greater than the inner diameter of the second step 802, and the distance between the first step 801 and the second step 802 is L. The blocking member 4 can be installed in conjunction with the first step 801, and the blocking member 4 can also be installed in conjunction with the second step 802.

[0125] Furthermore, the side walls of the first nozzle chamber 301 and the second nozzle chamber 302 are each provided with at least two nozzles.

[0126] At least two nozzles are disposed on the side walls of the first nozzle chamber 301 and the second nozzle chamber 302 to be suitable for gas water heaters of different powers.

[0127] In this embodiment, the blocking member 4 is installed in cooperation with the first step 801, and the side walls of the first nozzle cavity 301 and the second nozzle cavity 302 are each provided with two nozzles. Specifically, the side wall of the first nozzle cavity 301 is provided with a third nozzle 503 and a fourth nozzle 504, and the side wall of the second nozzle cavity 302 is provided with a fifth nozzle 505 and a sixth nozzle 506.

[0128] When the first solenoid valve 701 is opened, the first sub-gas channel 202 is connected with the main gas channel 201, and the gas enters the first sub-gas channel 202 from the main gas channel 201, and then enters the first nozzle chamber 301, and the gas can be sprayed from the third nozzle 503 and the fourth nozzle 504. When the first solenoid valve 701 and the second solenoid valve 702 are both opened, the second sub-gas channel 203 is connected with the first sub-gas channel 202, and the gas enters the first sub-gas channel 202 from the main gas channel 201 and then enters the second sub-gas channel 203, and then enters the second nozzle chamber 302, and the gas can be sprayed not only from the third nozzle 503 and the fourth nozzle 504, but also from the fifth nozzle 505 and the sixth nozzle 506.

[0129] Furthermore, the blocking member 4 is installed with an interference fit with the assembly structure.

[0130] In order to improve the firmness of the installation, the plugging member 4 and the assembly structure are installed with interference fit. After the plugging member 4 and the assembly structure are installed, the plugging member 4, as the common wall of the first nozzle cavity 301 and the second nozzle cavity 301, needs to withstand the pressure difference of the nozzle cavities on both sides, and the plugging member 4 and the assembly structure are interference fit, which can make the plugging member 4 firmly set, and the plugging member 4 is not easy to fall off, thereby improving the reliability of the structure and ensuring the service life of the gas separation device.

[0131] Furthermore, the air channel also includes a third branch air channel 204, which can be connected or disconnected with the main air channel 201, and the nozzle chamber also includes a third nozzle chamber 303, which is connected with the third branch air channel 204, and a second nozzle 502 is arranged on the side wall of the third nozzle chamber 303.

[0132] In the gas distribution device of this embodiment, the gas channel further includes a third gas channel 204, and the third gas channel 204 can be connected or disconnected with the main gas channel 201. The third gas channel 204 is arranged in the second part 102. Figure 1-Figure 3 As shown, the third air channel 204 is arranged on both sides of the main air channel 201 opposite to the first air channel 202 and the second air channel 203. Optionally, the first air channel 202, the second air channel 203 and the third air channel 204 are coaxially arranged.

[0133] In this embodiment, the third sub-airway 204 is connected or disconnected with the main airway 201 via the third solenoid valve 703 , that is, the third solenoid valve 703 can control the connection and disconnection of the third sub-airway 204 and the main airway 201 .

[0134] The nozzle chamber also includes a third nozzle chamber 303, which is connected to the third gas distribution channel 204. The side wall of the third nozzle chamber 303 is provided with a second nozzle 502. The first nozzle 501 is a normally open nozzle. When the first nozzle 501 and the second nozzle 502 spray, it is the second fire power gear (medium or small fire working state) of the gas water heater, which can meet different usage requirements.

[0135] In order to make the appearance of the gas distributor more regular and facilitate the subsequent coordination with the burner, the axes of the first nozzle 501, the second nozzle 502, the third nozzle 503, the fourth nozzle 504, the fifth nozzle 505 and the sixth nozzle 506 are parallel and coplanar. This six-nozzle gas distributor is suitable for a 30kW 16-liter water heater.

[0136] It should be noted that, according to the different gas water heaters matched with the gas distribution device, after the plugging member 4 is assembled, each nozzle can be formed through subsequent processing.

[0137] The gas distribution device of this embodiment can be applied to water heaters with different loads, which can reduce the later processing steps, improve the versatility of the product, narrow the load fluctuation range, and improve the user experience; at the same time, it increases the overlapping area of ​​adjacent working gears, making the fire power switching smoother and reducing safety hazards such as accidental flameout.

[0138] This embodiment also provides a mold for manufacturing the above-mentioned air separation device, the mold includes a mold body and a first core-pulling part, the first core-pulling part is connected to the mold body, and the first core-pulling part has a first molding structure that matches the reinforced wall structure of the air separation device.

[0139] This mold is capable of manufacturing the gas separation device of this embodiment. The first core-pulling portion of the mold has a first molding structure that matches the reinforced wall structure of the gas separation device to increase the thickness and strength of the common side wall of the main air duct 201 and the first nozzle chamber 301 of the gas separation device, ensuring that the main air duct 201 and the first nozzle chamber 301 are independent of each other and will not be connected, thereby reducing the risk of cross-gas. At this time, the caliber size of the interface 9 can be appropriately increased to meet the secondary pressure detection requirements and improve the detection accuracy without increasing the load of the water heater and ensuring that the flue gas emissions meet the standard requirements.

[0140] Furthermore, the mold of this embodiment further comprises a second core-pulling portion 6, which is connected to the mold body, and an outer wall of the second core-pulling portion 6 is formed with a second molding structure matching the assembly structure of the gas separation device.

[0141] like Fig.12 As shown, a second molding structure is provided on the outer wall of the second core-pulling portion 6, and the second molding structure has at least two types, and the second molding structure matches the assembly structure of the gas distribution device. In this embodiment, two types of second molding structures are provided, specifically, the second molding structure is a protruding structure protruding from the outer wall of the second core-pulling portion 6, the larger second molding structure has an outer diameter of φC, and the smaller second molding structure has an outer diameter of φD, φC>φD, the larger second molding structure can form a first step 801, and the smaller second molding structure can form a second step 802.

[0142] This mold can die-cast at least two assembly structures at one time, thereby manufacturing the gas separation device of this embodiment, so that this gas separation device can be suitable for gas water heaters of different powers, with high manufacturing flexibility and a wide range of applications. There is no need to separately open molds and cast gas separation devices that match gas water heaters of each load, so that one mold can manufacture gas separation devices with different needs, which greatly simplifies the manufacturing process and manufacturing costs.

[0143] The present embodiment also provides a water heater, including the gas distribution device of the present embodiment. The thickness of the common side wall of the main air duct 201 and the first nozzle chamber 301 is thicker and stronger, which can ensure that the main air duct 201 and the first nozzle chamber 301 are independent of each other and will not be connected, thereby reducing the risk of cross-gas. At this time, the caliber size of the interface 9 can be appropriately increased to meet the secondary pressure detection requirements, thereby achieving the purpose of not increasing the load of the water heater and making the flue gas emissions meet the standard requirements.

[0144] Moreover, the gas distribution device structures matched with water heaters of different powers (different loads) are different, and the gas distribution device of this embodiment can be suitable for water heaters of different powers, with high manufacturing flexibility and a wide range of applications. There is no need to separately open molds and cast gas distribution devices matched with gas water heaters of each load, so that one mold can produce gas distribution devices with different needs.

[0145] Specifically, the water heater is a gas water heater, and the gas water heater includes other devices and structures that existing gas water heaters have, such as a burner, etc. The gas distribution device distributes gas to the burner, and the two cooperate with each other to achieve the hot water preparation process.

[0146] This embodiment also provides a control method, which is used to control the gas distribution device of this embodiment or to control the water heater of this embodiment. The control method includes:

[0147] When the first fire gear is in operation, the first nozzle 501 of the main air passage 201 supplies air;

[0148] When the second fire gear is in operation, the first nozzle 501 and the second nozzle 502 of the third gas branch channel 204 supply gas;

[0149] When the third fire gear is in operation, the first nozzle 501, the second nozzle 502 and the two nozzles of the first nozzle chamber 301 supply gas;

[0150] When the fourth fire power gear is operated, the first nozzle 501, the second nozzle 502, at least two nozzles of the first nozzle chamber 301 and at least two nozzles of the second nozzle chamber 302 supply gas.

[0151] This control method corresponds to different firepower levels selected by the user. Specifically, the first firepower level corresponds to a low-fire working state, the second firepower level corresponds to a medium-low-fire working state, the third firepower level corresponds to a medium-high-fire working state, and the fourth firepower level corresponds to a high-fire working state. The user can make a selection by operating the corresponding control structure on the water heater as needed.

[0152] like Figure 3 As shown in the figure, the arrow direction is the gas flow direction. The initial state of each solenoid valve is closed.

[0153] When the user selects the first fire gear, only the first nozzle 501 of the main air channel 201 supplies gas to the burner. The first nozzle 501 is a normally open nozzle, and it is in a low-fire working state.

[0154] When the user selects the second fire gear, the third solenoid valve 703 opens, the third branch gas channel 204 is connected to the main gas channel 201, the gas enters the third branch gas channel 204 from the main gas channel 201, and then enters the third nozzle chamber 303, and the gas can be sprayed out from the second nozzle 502. The first nozzle 501 is a normally open nozzle. The first nozzle 501 and the second nozzle 502 supply gas to the burner at the same time, that is, the two nozzles supply gas to the burner. At this time, it is a medium or small fire working state.

[0155] When the user selects the third fire gear, the first solenoid valve 701 opens, the first branch gas channel 202 is connected to the main gas channel 201, the gas enters the first branch gas channel 202 from the main gas channel 201, and then enters the first nozzle chamber 301, the gas can be sprayed out from the third nozzle 503 and the fourth nozzle 504, the third solenoid valve 703 is also in an open state, the first nozzle 501 is a normally open nozzle, the first nozzle 501, the second nozzle 502, the third nozzle 503 and the fourth nozzle 504 supply gas to the burner at the same time, that is, four nozzles supply gas to the burner, and this is the medium and high fire working state.

[0156] When the user selects the fourth fire gear, the first solenoid valve 701 and the second solenoid valve 702 are both opened, the second gas channel 203 is connected to the first gas channel 202, and the gas enters the first gas channel 202 from the main gas channel 201 and then enters the second gas channel 203, and then enters the second nozzle chamber 302. The gas can be sprayed not only from the third nozzle 503 and the fourth nozzle 504, but also from the fifth nozzle 505 and the sixth nozzle 506. The third solenoid valve 703 is also in an open state, and the first nozzle 501 is a normally open nozzle. The first nozzle 501, the second nozzle 502, the third nozzle 503, the fourth nozzle 504, the fifth nozzle 505 and the sixth nozzle 506 supply gas to the burner at the same time, that is, six nozzles supply gas to the burner, and it is now in a high fire working state.

[0157] like Figure 5-Figure 11, which is another embodiment of the gas distribution device of this embodiment. The difference between this embodiment and the previous embodiment is that three nozzles are arranged on the side wall of the second nozzle chamber 302. In addition, in order to arrange two nozzles of the first nozzle chamber 301 and three nozzles of the second nozzle chamber 302, and to ensure that a larger diameter interface 9 is arranged, the thickness b of the common side wall of the first nozzle chamber 301 and the main gas channel 201 will be reduced, as shown in FIG. Fig. 9 As shown, since the gas separation device of this embodiment is provided with a reinforced wall structure, it can ensure that the main air duct 201 and the first nozzle chamber 301 are independent of each other and will not cause cross-flow of gases. At the same time, it meets the needs of secondary pressure detection, so that the load of the water heater will not exceed the standard and the smoke emission also meets the requirements.

[0158] In this embodiment, by cooperating and installing the blocking member 4 with the second step 802 , two nozzles are provided on the side wall of the first nozzle cavity 301 , and three nozzles are provided on the side wall of the second nozzle cavity 302 .

[0159] like Fig.10 As shown, in the previous embodiment, the blocking member 4 is installed in cooperation with the first step 801, and in this embodiment, the blocking member 4 is installed in cooperation with the second step 802. As a result, the internal volume of the first nozzle chamber 301 becomes smaller, and the internal volume of the second nozzle chamber 302 becomes larger, while the radial dimensions of the first nozzle chamber 301 and the second nozzle chamber 302 remain unchanged, so the side wall area of ​​the first nozzle chamber 301 becomes smaller, and the side wall area of ​​the second nozzle chamber 302 becomes larger. The side wall of the first nozzle chamber 301 is provided with two nozzles, namely the third nozzle 503 and the fourth nozzle 504, and the side wall of the second nozzle chamber 302 is provided with three nozzles, namely the fifth nozzle 505, the sixth nozzle 506 and the seventh nozzle 507. This gas distribution device with a seven-nozzle structure is suitable for a 34kW 18-liter water heater.

[0160] like Figure 8 and Fig.11 As shown, the arrow direction is the gas flow direction. When performing secondary pressure detection, the inner diameter of the main gas channel 201 is enlarged, so that the diameter of the interface 9 changes, the gas pressure entering the secondary pressure detection cavity 12 can be reduced, the inner diameter of the channel entering the secondary pressure detection port 11 becomes larger, and the amount of gas entering the secondary pressure detection port 11 becomes larger. The secondary pressure can reflect the real pressure of the main gas channel 201, thereby ensuring the heat load, and the reinforced wall structure can ensure that the common side wall of the main gas channel 201 and the first nozzle cavity 301 will not be damaged or opened, so that the two remain independent of each other.

[0161] When controlling the gas separation device of this embodiment, the control method includes:

[0162] When the user selects the first fire gear, only the first nozzle 501 of the main air channel 201 supplies gas to the burner. The first nozzle 501 is a normally open nozzle, and it is in a low-fire working state.

[0163] When the user selects the second fire gear, the third solenoid valve 703 opens, the third branch gas channel 204 is connected to the main gas channel 201, the gas enters the third branch gas channel 204 from the main gas channel 201, and then enters the third nozzle chamber 303, and the gas can be sprayed out from the second nozzle 502. The first nozzle 501 is a normally open nozzle. The first nozzle 501 and the second nozzle 502 supply gas to the burner at the same time, that is, the two nozzles supply gas to the burner. At this time, it is a medium or small fire working state.

[0164] When the user selects the third fire gear, the first solenoid valve 701 opens, the first branch gas channel 202 is connected to the main gas channel 201, the gas enters the first branch gas channel 202 from the main gas channel 201, and then enters the first nozzle chamber 301, the gas can be sprayed out from the third nozzle 503 and the fourth nozzle 504, the third solenoid valve 703 is also in an open state, the first nozzle 501 is a normally open nozzle, the first nozzle 501, the second nozzle 502, the third nozzle 503 and the fourth nozzle 504 supply gas to the burner at the same time, that is, four nozzles supply gas to the burner, and this is the medium and high fire working state.

[0165] When the user selects the fourth fire gear, the first solenoid valve 701 and the second solenoid valve 702 are both opened, the second gas channel 203 is connected to the first gas channel 202, and the gas enters the first gas channel 202 from the main gas channel 201 and then enters the second gas channel 203, and then enters the second nozzle chamber 302. The gas can be sprayed not only from the third nozzle 503 and the fourth nozzle 504, but also from the fifth nozzle 505, the sixth nozzle 506 and the seventh nozzle 507. The third solenoid valve 703 is also in an open state, and the first nozzle 501 is a normally open nozzle. The first nozzle 501, the second nozzle 502, the third nozzle 503, the fourth nozzle 504, the fifth nozzle 505, the sixth nozzle 506 and the seventh nozzle 507 supply gas to the burner at the same time, that is, seven nozzles supply gas to the burner, and it is now in a high fire working state.

[0166] In other embodiments, according to the size of the gas distribution device body 1 and different gas distribution requirements, the gas distribution device can also be provided with three, four, five, etc. assembly structures. Similarly, the side walls of the first nozzle cavity 301 and the second nozzle cavity 302 can be provided with four, five, six, etc. nozzles. The number of nozzles on the side walls of the first nozzle cavity 301 and the second nozzle cavity 302 can be the same or different.

[0167] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A gas separation device, characterized in that: include: Ontology(1); An airway is arranged in the body (1), the airway comprises a main airway (201) and a first branch airway (202), and the main airway (201) and the first branch airway (202) can be connected or disconnected; A nozzle chamber is arranged in the body (1), the nozzle chamber comprising a first nozzle chamber (301), the first nozzle chamber (301) being in communication with the first gas branch channel (202); A nozzle assembly is arranged on the body (1), the nozzle assembly comprising a first nozzle (501), a portion of the first nozzle (501) intersecting and communicating with a side wall of the main airway (201) to form an intersecting interface (9); The reinforcing wall structure is a common side wall of the main air channel (201) and the first nozzle chamber (301), so that the main air channel (201) and the first nozzle chamber (301) are independent of each other, and the reinforcing wall structure protrudes toward the inner side of at least one of the main air channel (201) and the first nozzle chamber (301).

2. The gas separation device according to claim 1, characterized in that: The reinforcing wall structure protrudes toward the inner side of the main air passage (201), and the cross-sectional area of ​​a portion of the main air passage (201) provided with the reinforcing wall structure decreases along the gas flow direction.

3. The gas separation device according to claim 2, characterized in that: The reinforced wall structure comprises a reinforced surface (10), the reinforced surface (10) is a plane, and the reinforced surface (10) is arranged at an angle with the axial direction of the main air channel (201).

4. The gas separation device according to claim 3, characterized in that: The reinforcement surface (10) is arranged opposite to the interface (9).

5. The gas separation device according to claim 2, characterized in that: The reinforced wall structure comprises a reinforced surface (10), and the reinforced surface (10) is a curved surface or a stepped surface.

6. The gas separation device according to claim 1, characterized in that: It also comprises a secondary pressure detection port (11), wherein the secondary pressure detection port (11) is arranged on the body (1), and the secondary pressure detection port (11) is connected to the first nozzle (501).

7. The gas separation device according to any one of claims 1 to 6, characterized in that: The air channel further comprises a second sub-air channel (203), and the first sub-air channel (202) and the second sub-air channel (203) can be connected or disconnected; the nozzle chamber further comprises a second nozzle chamber (302), the second nozzle chamber (302) is arranged adjacent to the first nozzle chamber (301), and the second nozzle chamber (302) is connected to the second sub-air channel (203); The gas separation device also includes: At least two assembly structures are arranged at intervals on the inner wall of the intersection of the first nozzle cavity (301) and the second nozzle cavity (302); The blocking member (4) can be selectively installed in cooperation with one of the assembly structures to adjust the number of nozzles that can be arranged on the side walls of the first nozzle chamber (301) and the second nozzle chamber (302).

8. The gas separation device according to claim 7, characterized in that: The assembly structure comprises a step protruding from the inner wall of the junction of the first nozzle cavity (301) and the second nozzle cavity (302).

9. The gas separation device according to claim 8, characterized in that: The closer the step is to the second nozzle chamber (302), the larger the inner diameter of the step is.

10. The gas separation device according to claim 8, characterized in that: The side walls of the first nozzle chamber (301) and the second nozzle chamber (302) are each provided with at least two nozzles.

11. The gas separation device according to claim 10, characterized in that: The assembly structure comprises a first step (801) and a second step (802), the first step (801) being closer to the second nozzle cavity (302) than the second step (802); the blocking member (4) is mounted in cooperation with the first step (801), and the side walls of the first nozzle cavity (301) and the second nozzle cavity (302) are each provided with two of the nozzles; or, the blocking member (4) is mounted in cooperation with the second step (802), the side walls of the first nozzle cavity (301) are provided with two of the nozzles, and the side walls of the second nozzle cavity (302) are provided with three of the nozzles.

12. The gas separation device according to claim 7, characterized in that: The air channel further comprises a third branch air channel (204), the third branch air channel (204) and the main air channel (201) can be connected or disconnected, and a second nozzle (502) is arranged on a side wall of the third branch air channel (204).

13. A mold, characterized in that: Used to manufacture the air separation device according to any one of claims 1 to 12, the mold comprises a mold body and a first core-pulling part, the first core-pulling part is connected to the mold body, and the first core-pulling part has a first molding structure that matches the reinforced wall structure of the air separation device.

14. The mold according to claim 13, characterized in that It also comprises a second core-pulling part (6), wherein the second core-pulling part (6) is connected to the mold body, and the outer wall of the second core-pulling part (6) is formed with a second molding structure matching the assembly structure of the gas separation device.

15. A water heater, characterized in that: It comprises a gas separation device as described in any one of claims 1-14.

16. A control method, characterized in that: Used to control the gas distribution device according to any one of claims 1 to 12 or used to control the water heater according to claim 15, the control method comprising: When the first fire gear is in operation, the first nozzle (501) of the main air channel (201) supplies air; When the second fire power gear is in operation, the first nozzle (501) and the second nozzle (502) of the third gas branch channel (204) supply gas; When the third fire power gear is in operation, the first nozzle (501), the second nozzle (502) and the two nozzles of the first nozzle chamber (301) supply air; When the fourth fire power gear is in operation, the first nozzle (501), the second nozzle (502), at least two nozzles of the first nozzle chamber (301), and at least two nozzles of the second nozzle chamber (302) supply air.

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