Combustion plate, combustion device, combustion system and gas water heating equipment

Abstract

The invention relates to a combustion plate, a combustion device, a combustion system and gas water heating equipment. A cooling flow channel and a combustion hole are formed in the combustion plate, the cooling flow channel is independent of the combustion hole, and the cooling flow channel is arranged around the combustion hole. According to the combustion plate, the combustion device, the combustion system and the gas water heating equipment, backfire is not prone to occurring.

Description

Technical Field

[0001] The present application relates to the field of hot water technology, and in particular to a combustion plate, a combustion device, a combustion system and a gas hot water device. Background Art

[0002] Premixed combustion technology refers to a combustion technology that mixes gas and air in advance and burns them at one time. The combustion flame formed by premixed combustion technology has the advantages of high combustion intensity and strong propagation ability. At present, premixed combustion technology has been widely used in gas water heaters.

[0003] However, in the existing gas water heaters using premixed combustion technology, the combustion flame is prone to backfire and the combustion stability is relatively weak. Summary of the invention

[0004] In view of the above problems, according to various embodiments of the present application, a combustion plate, a combustion device, a combustion system and a gas water heater are provided.

[0005] A combustion plate is provided with a cooling channel and a combustion hole. The cooling channel is independent of the combustion hole and is arranged around the combustion hole.

[0006] In some embodiments, a combustion plate inner cavity is opened in the combustion plate, and the combustion plate inner cavity structure forms the cooling flow channel.

[0007] In some embodiments, there are at least two combustion holes, and the combustion holes are arranged along a first direction and / or a second direction; the first direction intersects with the second direction.

[0008] In some embodiments, the cooling channel penetrates the combustion plate along the first direction and / or the second direction.

[0009] In some embodiments, there are at least two combustion holes, at least one of which is a first combustion hole, and at least one of which is a second combustion hole;

[0010] In which, the combustion plate has a first combustion mode and / or a second combustion mode, and the combustion plate includes the first combustion mode and / or the second combustion mode. In the first combustion mode, the first combustion hole outputs one of the fuel gas and the combustion-supporting gas, and the second combustion hole outputs the other of the fuel gas and the combustion-supporting gas, or the fuel gas in the first combustion hole flows into the second combustion hole and is mixed with the combustion-supporting gas in the second combustion hole and then output; in the second combustion mode, the second combustion hole outputs a mixture of fuel gas and combustion-supporting gas.

[0011] In some embodiments, the first combustion holes and the second combustion holes are alternately arranged along a first direction and / or a second direction, and the first direction intersects with the second direction. A combustion device comprises a combustion plate as described in any one of the above.

[0012] In some embodiments, the combustion device further includes a liquid inlet pipe assembly and a liquid outlet pipe assembly, wherein the liquid inlet pipe assembly is mounted at the liquid inlet of the cooling channel, and the liquid outlet pipe assembly is mounted at the liquid outlet of the cooling channel.

[0013] A combustion system comprises the combustion device as described in any one of the above.

[0014] In some embodiments, there are at least two combustion holes, at least one of which is a first combustion hole, and at least one of which is a second combustion hole;

[0015] Wherein, the combustion plate has a first combustion mode and / or a second combustion mode, and the combustion plate includes the first combustion mode and / or the second combustion mode. In the first combustion mode, the first combustion hole outputs one of the fuel gas and the combustion-supporting gas, and the second combustion hole outputs the other of the fuel gas and the combustion-supporting gas, or the fuel gas in the first combustion hole flows into the second combustion hole and is mixed with the combustion-supporting gas in the second combustion hole and then output. In the second combustion mode, the second combustion hole outputs a mixed gas of the fuel gas and the combustion-supporting gas;

[0016] The combustion system further comprises a mixing device and an air supply device, wherein the mixing device is in communication with the second combustion hole, the air supply device comprises a first ventilation component, a second ventilation component and a third ventilation component, the second ventilation component and the third ventilation component are both in communication with the mixing device, and the first ventilation component is in communication with the first combustion hole;

[0017] Among them, the first ventilation assembly and the second ventilation assembly are both used to transport one of the fuel gas or the combustion-supporting gas, the third ventilation assembly is used to transport the other of the fuel gas or the combustion-supporting gas, and at least one of the first ventilation assembly and the second ventilation assembly can be conducted.

[0018] In some embodiments, the third ventilation assembly includes a first air supply member, the air supply device includes a second air supply member, and the second air supply member can be in communication with the first ventilation assembly and / or the second ventilation assembly.

[0019] In some embodiments, the air supply device also includes a control valve, which is used to control the connection or disconnection of the second air supply part and the first ventilation component; and / or, the control valve is used to control the connection or disconnection of the second air supply part and the second ventilation component; when the heat load demand is less than the preset heat load amount, the control valve connects the second air supply part and the first ventilation component; when the heat load demand is greater than or equal to the preset heat load amount, the control valve connects the second air supply part and the second ventilation component.

[0020] A gas water heater comprises a combustion system as described in any one of the above.

[0021] The above-mentioned combustion plate, combustion device, combustion system and gas water heater have a cooling channel arranged around the combustion hole, so that the cooling fluid in the cooling channel can quickly cool the gas in the combustion hole. As a result, the temperature of the flame formed by the combustion of the combustion plate is also reduced. Among them, the propagation speed of the flame is related to its own temperature. The lower the temperature of the flame, the slower its propagation speed. Therefore, when the temperature of the flame is reduced, the speed at which the flame returns to the combustion hole will also be reduced, the possibility of flashback is reduced, and the combustion stability is better.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the combustion plate in some embodiments of the present application.

[0025] Figure 2 This is a cross-sectional view of the combustion plate along the AA direction in some other embodiments of the present application.

[0026] Figure 3 This is a schematic diagram of the structure of the combustion device in some embodiments of the present application.

[0027] Figure 4 This is a schematic diagram of the structure of the combustion system in some embodiments of the present application.

[0028] Figure Number:

[0029] 1. Combustion system;

[0030] 10. Combustion device; 11. Combustion plate; 111. Combustion hole; 111a. First combustion hole; 111b. Second combustion hole; 12. Cooling channel; 13. Liquid inlet pipeline assembly; 131. Liquid inlet manifold; 132. Liquid inlet branch pipe; 133. Liquid inlet installation pipe; 14. Liquid outlet pipeline assembly; 141. Liquid outlet manifold; 142. Liquid outlet branch pipe; 143. Liquid outlet installation pipe;

[0031] 20. Mixing device;

[0032] 30. Air supply device; 31. First ventilation assembly; 311. First control valve; 312. First ventilation pipe; 32. Second ventilation assembly; 321. Second control valve; 322. Second ventilation pipe; 33. Third ventilation assembly; 331. First air supply member; 332. Third ventilation pipe. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] See also Figure 1 The present application provides a combustion plate 11 , on which a cooling channel 12 and a combustion hole 111 are opened. The cooling channel 12 is independent of the combustion hole 111 , and the cooling channel 12 is arranged around the combustion hole 111 .

[0040] The combustion holes 111 on the combustion plate 11 are used to output fuel gas, or output a mixed gas of fuel gas and combustion-supporting gas mixed in advance, or output unmixed fuel gas and combustion-supporting gas at the same time. Optionally, the fuel gas is fuel gas, and the combustion-supporting gas is air and / or oxygen. The combustion system 1 further includes a gas supply device 30, which is used to deliver gas to the combustion holes 111.

[0041] There may be one or more combustion holes 111, which may be arranged according to specific needs.

[0042] For example, a combustion plate inner cavity is provided in the combustion plate 11, and the combustion plate inner cavity is structured to form a cooling channel 12, which is arranged around the combustion hole 111. For another example, the cooling channel 12 is an annular channel, which is arranged around the combustion hole 111. If there are multiple combustion holes 111, there are also multiple annular channels, which correspond to all the combustion holes 111 one by one, and each annular channel is arranged around the corresponding combustion hole 111.

[0043] The cooling channel 12 is arranged around the combustion hole 111, so that the cooling fluid in the cooling channel 12 can quickly cool the gas in the combustion hole 111. As a result, the temperature of the flame formed by the combustion of the combustion plate 11 is also reduced. Among them, the propagation speed of the flame is related to its own temperature. The lower the temperature of the flame, the slower its propagation speed. Therefore, when the temperature of the flame is reduced, the speed at which the flame returns to the combustion hole 111 will also be reduced, the possibility of flashback is reduced, and the combustion stability is better.

[0044] In some embodiments, a combustion plate inner cavity is opened in the combustion plate 11 , and the combustion plate inner cavity structure forms a cooling flow channel 12 .

[0045] This method of forming the cooling channel 12 is simple and easy to operate, and facilitates the molding of the cooling channel 12 .

[0046] In some embodiments, there are at least two combustion holes 111 , and the combustion holes 111 are arranged along the first direction and / or the second direction; the first direction intersects the second direction.

[0047] The first direction and the second direction can both be the length direction of the combustion plate 11 (eg Figure 1 The direction indicated by the arrow X in the middle), the width direction (such as Figure 1 The first direction is the direction indicated by the arrow Y in the middle), any direction in the plane where the length direction and the width direction intersect and any direction intersecting both the length direction and the width direction, and the first direction intersects the second direction. For the convenience of description, the following embodiments are described by taking the first direction as the length direction of the combustion plate 11 and the second direction as the width direction of the combustion plate 11 as an example.

[0048] For example, the combustion holes 111 are arranged along the length direction of the combustion plate 11 to form a row group of combustion holes 111, and / or the combustion holes 111 are arranged along the width direction of the combustion plate 11 to form a column group of combustion holes 111.

[0049] There are at least two combustion holes 111, and the combustion holes 111 are arranged along the length direction and / or width direction of the combustion plate 11 so that more combustion holes 111 can be arranged on the combustion plate 11. The more combustion holes 111 there are, the more gas the combustion plate 11 can output per unit time, thereby being able to withstand a greater heat load demand.

[0050] In some embodiments, the cooling channel 12 penetrates the combustion plate 11 along the first direction and / or the second direction.

[0051] This design can increase the volume space in the cooling channel 12 to accommodate more cooling fluid and cool the gas in the combustion hole 111 and the combustion plate 11, and the cooling effect is better. In this way, the anti-flashback effect is also better.

[0052] Please also read Figure 2 In some embodiments, there are at least two combustion holes 111 , at least one combustion hole 111 is a first combustion hole 111 a , and at least one combustion hole 111 is a second combustion hole 111 b ;

[0053] Among them, the combustion plate 11 has a first combustion mode and / or a second combustion mode. The combustion plate 11 includes the first combustion mode and / or the second combustion mode. In the first combustion mode, the first combustion hole 111a outputs one of the fuel gas and the combustion-supporting gas, and the second combustion hole 111b outputs the other of the fuel gas and the combustion-supporting gas, or the fuel gas in the first combustion hole 111a flows into the second combustion hole 111b and is mixed with the combustion-supporting gas in the second combustion hole 111b and then output; in the second combustion mode, the second combustion hole 111b outputs a mixed gas of fuel gas and combustion-supporting gas.

[0054] In some embodiments, the first combustion hole 111a and the second combustion hole 111b are independently arranged and are directly connected to the outside. Direct connection means that the connection is not carried out through an intermediate connecting element. In this embodiment, when the first combustion mode is adopted, the fuel gas is output from the first combustion hole 111a, and the combustion-supporting gas is output from the second combustion hole 111b. At this time, the combustion plate 11 is in diffusion combustion, ensuring the flame stability during diffusion combustion; when the second combustion mode is adopted, the first combustion hole 111a does not spray gas, and the second combustion hole 111b outputs a mixed gas of fuel gas and combustion-supporting gas. At this time, the combustion plate 11 is in premixed combustion, which can shorten the flame length during premixed combustion and achieve stable combustion. In addition, when the heat load demand is small, turning on the first combustion mode is not easy to cause backfire; when the heat load demand is large, turning on the second combustion mode can effectively reduce the generation of exhaust gas.

[0055] In some embodiments, there are at least two second combustion holes 111b, and a first combustion hole 111a is disposed between every two adjacent second combustion holes 111b. The first combustion hole 111a has two branch gas outlets, and each branch gas outlet is connected to a corresponding second combustion hole 111b. In this embodiment, the first combustion hole 111a is formed in the combustion plate 11, and the first combustion hole 111a is connected to the outside through the two second combustion holes 111b connected thereto.

[0056] In this embodiment, when the first combustion mode is adopted, the fuel gas in each first combustion hole 111a can flow into the corresponding second combustion hole 111b through the branch outlet (the gas flow direction is as shown in FIG. Figure 2 and mixed with the combustion-supporting gas in the corresponding second combustion hole 111b and then ejected from the second combustion hole 111b (the gas flow direction is as shown in FIG. Figure 2 Indicated by the arrow Z in the figure), in this way, premixing of the gas during diffusion combustion is achieved, thereby improving the combustion efficiency; when the second combustion mode is adopted, the first combustion hole 111a does not spray gas, and the second combustion hole 111b outputs a mixed gas of fuel gas and combustion-supporting gas, which can shorten the flame length during premixed combustion, achieve stable combustion, and help improve the combustion efficiency.

[0057] When the first combustion mode is used, the combustion plate 11 is in diffusion combustion, ensuring the flame stability during diffusion combustion; when the second combustion mode is used, the first combustion hole 111a does not spray gas, and the second combustion hole 111b outputs the mixed gas of fuel gas and combustion-supporting gas. At this time, the combustion plate 11 is in premixed combustion, which can shorten the flame length during premixed combustion and achieve stable combustion. In addition, when the heat load demand is small, turning on the first combustion mode is not easy to cause backfire; when the heat load demand is large, turning on the second combustion mode can effectively reduce the generation of exhaust gas.

[0058] Optionally, the fuel gas is fuel gas, and the combustion-supporting gas is air and / or oxygen.

[0059] The above-mentioned combustion plate 11 has a first combustion hole 111a and a second combustion hole 111b. The same combustion plate 11 can meet the needs of different combustion modes at the same time; when the heat load demand is small, turning on the first combustion mode can realize the premixing of the gas during diffusion combustion, thereby improving the combustion efficiency; when the heat load demand is large, turning on the second combustion mode can effectively reduce the generation of exhaust gas.

[0060] In some embodiments, the first combustion holes 111 a and the second combustion holes 111 b are alternately arranged along the first direction and / or the second direction, and the first direction intersects the second direction.

[0061] For example, the first combustion holes 111a and the second combustion holes 111b are alternately arranged along the length direction of the combustion plate 11 to form a row of combustion holes. From left to right along the length direction of the combustion plate 11, the first is the second combustion hole 111b, the second is the first combustion hole 111a, the third is the second combustion hole 111b, the fourth is the first combustion hole 111a, and so on.

[0062] For another example, the first combustion holes 111a and the second combustion holes 111b are alternately arranged along the width direction of the combustion plate 11 to form a column of combustion holes. From top to bottom along the width direction of the combustion plate 11, the first one is the second combustion hole 111b, the second one is the first combustion hole 111a, the third one is the second combustion hole 111b, and the fourth one is the first combustion hole 111a.

[0063] Among them, alternating arrangement can be understood as two components being arranged alternately in sequence. For example, two components are defined as a first component and a second component, and alternating arrangement of the first component and the second component means that the first component and the second component are arranged in the order of M1 first components, N1 second components, M2 first components, N2 second components, ..., or N1 second components, M1 first components, N2 second components, M2 first components, .... Among them, M1, M2, ... and N1, N2, ... are all natural numbers greater than 0, and M1, M2, ... or N1, N2, ... can be the same value or different values.

[0064] Under this design, the combustion plate 11 can not only ensure that the fuel gas and the combustion-supporting gas are evenly mixed in the first combustion mode, but also ensure that the combustion plate 11 is in the first combustion mode or the second combustion mode. Since the cooling channel 12, the first combustion hole 111a, and the second combustion hole 111b are evenly distributed on the combustion plate 11, the cooling fluid in the cooling channel 12 can fully cool the gas in the first combustion hole 111a and the second combustion hole 111b, and avoid the problem of uneven temperature reduction of the gas in each combustion hole 111 due to uneven temperature of the cooling fluid, and the flashback of some combustion holes 111, so that the combustion stability is better. The present application also provides a combustion device 10, which includes a combustion plate 11 as described in any of the above embodiments.

[0065] The combustion device 10 in the present application has the effects brought by any of the above-mentioned embodiments, so it will not be described in detail here.

[0066] Please refer again Figure 1 , and also see Figure 3 In some embodiments, the combustion system 1 further includes a liquid inlet pipe assembly 13 and a liquid outlet pipe assembly 14 , wherein the liquid inlet pipe assembly 13 is mounted at the liquid inlet of the cooling channel 12 , and the liquid outlet pipe assembly 14 is mounted at the liquid outlet of the cooling channel 12 .

[0067] The liquid inlet pipe assembly 13 is used to input cooling fluid into the cooling channel 12, and the liquid outlet pipe assembly 14 is used to output the cooling fluid in the cooling channel 12, so that the cooling channel 12 can always maintain low-temperature cooling fluid, thereby helping to achieve a better cooling effect.

[0068] In some embodiments, the liquid inlet pipe assembly 13 includes a liquid inlet manifold 131, a plurality of liquid inlet branch pipes 132, and a liquid inlet installation pipe 133, and the liquid outlet pipe assembly 14 includes a liquid outlet manifold 141, a plurality of liquid outlet branch pipes 142, and a liquid outlet installation pipe 143. The liquid inlet installation pipe 133 is connected to the liquid inlet of the cooling channel 12, the liquid outlet installation pipe 143 is connected to the liquid outlet of the cooling channel 12, each liquid inlet branch pipe 132 is connected between the liquid inlet manifold 131 and the liquid inlet installation pipe 133, and each liquid outlet branch pipe 142 is connected between the liquid outlet manifold 141 and the liquid outlet installation pipe 143.

[0069] The cross-sectional shapes of the inlet manifold 131, the inlet branch pipe 132, the inlet installation pipe 133, the outlet manifold 141, the outlet branch pipe 142 and the outlet installation pipe 143 can be circular, square or other shapes. In actual operation, the cooling water flows in from the inlet manifold 131 (the external cooling fluid flows in from the Figure 4 The liquid flows into the liquid inlet installation pipe 133 in the direction indicated by the arrow R1 in the figure), flows into the cooling channel 12 through the liquid inlet branch pipes 132 and the liquid inlet installation pipe 133, and is then output through the liquid outlet installation pipe 143, the liquid outlet branch pipes 142 and the liquid outlet manifold 141.

[0070] The present application also provides a combustion system 1, which includes a combustion device 10 as described in any one of the above embodiments.

[0071] The combustion system 1 in the present application has the effects of any of the above-mentioned embodiments, so it will not be described in detail here.

[0072] Please also read Figure 4 In some embodiments, the combustion system 1 further includes a mixing device 20 and an air supply device 30, the mixing device 20 is in communication with the second combustion hole 111b, the air supply device 30 includes a first ventilation component 31, a second ventilation component 32 and a third ventilation component 33, the second ventilation component 32 and the third ventilation component 33 are both in communication with the mixing device 20, and the first ventilation component 31 is in communication with the first combustion hole 111a;

[0073] Among them, the first ventilation assembly 31 and the second ventilation assembly 32 are both used to transport one of the fuel gas or the combustion-supporting gas, and the third ventilation assembly 33 is used to transport the other of the fuel gas or the combustion-supporting gas. At least one of the first ventilation assembly 31 and the second ventilation assembly 32 can be conducted.

[0074] In actual use, the user can select to connect at least one of the first ventilation assembly 31 and the second ventilation assembly 32 according to the heat load demand, that is, the user can select at least one corresponding channel for supplying fuel gas or combustion-supporting gas according to the heat load demand.

[0075] For example, in an embodiment where the third ventilation assembly 33 delivers a combustion-supporting gas, and the combustion-supporting gas is air, and the first ventilation assembly 31 and the second ventilation assembly 32 deliver fuel gas:

[0076] When the heat load is small, the first combustion mode is turned on, and only the first ventilation component 31 is turned on, air flows into the mixing device 20 and is ejected from the second combustion hole 111b connected to the mixing device 20, and the gas is ejected from the first combustion hole 111a connected to the first ventilation component 31. After the gas and air are mixed in the combustion device 10, they are ignited and burned by the ignition needle, and flame-stable combustion can be achieved;

[0077] When the heat load is large, the second combustion mode is turned on, and only the second ventilation assembly 32 is turned on, air flows into the mixing device 20, and the gas flows into the inside of the mixing device 20, the air and the gas are mixed in the mixing device 20, and are ejected from the second combustion hole 111b connected to the mixing device 20, and the mixed gas is ignited and burned by the ignition needle, which can achieve full combustion, high combustion efficiency, and less exhaust gas.

[0078] When the first combustion mode and the second combustion mode are turned on at the same time, the first ventilation assembly 31 and the second ventilation assembly 32 are turned on at the same time, the gas is ejected from the first combustion hole 111a, and the mixed gas of the gas and air is ejected from the second combustion hole 111b. After the gas is ignited, the air in the mixed gas of the second combustion hole 111b can be supplemented to the gas of the first combustion hole 111a, so that the gas of the first combustion hole 111a can be ignited to achieve diffusion combustion; the mixed gas of the second combustion hole 111b can be directly ignited, and the second combustion hole 111b achieves premixed combustion. Diffusion combustion and premixed combustion are achieved at the same time, which improves combustion efficiency, ensures stable combustion, and reduces the generation of exhaust gas.

[0079] In some embodiments, the third ventilation component 33 includes a first air supply component 331 , and the air supply device 30 includes a second air supply component (not shown), and the second air supply component is in communication with the first ventilation component 31 and / or the second ventilation component 32 .

[0080] It should be noted that the first gas supply member 331 is used to supply one of the combustion-supporting gas and the fuel gas (the gas intake direction is as follows: Figure 4 The second gas supply member is used to supply the other of the combustion-supporting gas and the fuel gas (the gas inlet direction is as shown in FIG. Figure 4 (indicated by arrow R2).

[0081] In this embodiment, the first gas supply member 331 is used to supply combustion-supporting gas, for example, the first gas supply member 331 may be a fan. The second gas supply member is used to supply fuel gas.

[0082] In some embodiments, in some embodiments, the air supply device 30 also includes a control valve, which is used to control the connection or disconnection of the second air supply part and the first ventilation component 31; and / or, the control valve is used to control the connection or disconnection of the second air supply part and the second ventilation component 32; when the heat load demand is less than the preset heat load amount, the control valve connects the second air supply part and the first ventilation component 31; when the heat load demand is greater than or equal to the preset heat load amount, the control valve connects the second air supply part and the second ventilation component 32.

[0083] For example, the control valve is a three-way valve, which has a main circuit, a first branch circuit and a second branch circuit inside. The first branch circuit is connected between the main circuit and the first ventilation component 31, and the second branch circuit is connected between the main circuit and the second ventilation component 32. The main circuit is also connected to the second air supply component. When the main circuit is connected to the first branch circuit, the second air supply component is connected to the first ventilation component 31, and when the main circuit is connected to the second branch circuit, the second air supply component is connected to the second ventilation component 32.

[0084] For another example, the control valve includes a first control valve 311 and a second control valve 321, the first ventilation assembly 31 includes a first ventilation pipe 312, and the second ventilation assembly 32 includes a second ventilation pipe 322; the first ventilation pipe 312 is communicated with the first combustion hole 111a, and the second ventilation pipe 322 is communicated with the mixing device 20;

[0085] The first control valve 311 is connected to the first ventilation pipe 312 and used to control the connection or disconnection between the first ventilation pipe 312 and the second air supply member. The second control valve 321 is connected to the second ventilation pipe 322 and used to control the connection or disconnection between the second ventilation pipe 322 and the second air supply member.

[0086] When the heat load demand is less than the preset heat load amount, the first control valve 311 connects the second air supply member and the first ventilation pipe 312 ; when the heat load demand is greater than or equal to the preset heat load amount, the second control valve 321 connects the second air supply member and the second ventilation pipe 322 .

[0087] Specifically, the third ventilation assembly 33 further includes a third ventilation pipe 332 , and the third ventilation pipe 332 is also in communication with the mixing device 20 .

[0088] It can be understood that in the embodiment where the third vent pipe 332 delivers combustion-supporting gas, and the first vent pipe 312 and the second vent pipe 322 deliver fuel gas: when the heat load demand is less than the preset heat load, the first control valve 311 conducts the second gas supply member and the first vent pipe 312, and the second gas supply member and the second vent pipe 322 are not connected, and the gas is input into the combustion device 10 through the first vent pipe 312, and the gas does not enter the mixing device 20 and does not mix with the air. At this time, when the heat load of the combustion system 1 is small, the diffusion combustion method is adopted to achieve flame stability, and no backfire occurs at a low fire;

[0089] When the heat load demand is greater than or equal to the preset heat load amount, the second control valve 321 connects the second air supply member and the second ventilation pipe 322, and the second air supply member and the first ventilation pipe 312 are not connected, and the fuel gas is input into the mixing device 20 through the second ventilation pipe 322, and the fuel gas will be mixed with the air in the mixing device 20. At this time, when the heat load of the combustion system 1 is large, a premixed combustion method is adopted to achieve full combustion, high combustion efficiency, and less exhaust gas generation.

[0090] It should be noted that the hot water outlet temperature T is set by the user. 设定 , and the controller obtains the inlet water temperature T 进水 , water inlet flow q. Heat load demand Q = k·C 水 ·(T 设定 -T 进水 )·q, where k is the correction factor, Cwater is the specific heat capacity of water, (T 设定 -T 进水 ) is the target temperature difference, and qwater flow is the water inlet flow.

[0091] The preset amount of heat load is preferably the total heat load of the combustion system or gas water heater x preset percentage, the total heat load of the combustion system or gas water heater is the total heat load input or output of the combustion system or gas water heater, wherein the total heat load input of the combustion system or gas water heater = gas calorific value * gas consumption / t, t is the time required to input the corresponding gas consumption, the total heat load output of the combustion system or gas water heater = k·C water·25℃·q standard, wherein k is the correction coefficient, q standard is the water inlet flow rate under the standard test conditions of the corresponding combustion system or gas equipment, such as a 16L gas water heater, the corresponding water inlet flow rate q standard under the standard test conditions is 16L / min.

[0092] In this embodiment, the preset percentage is preferably 10%-30%, that is, the preset heat load is preferably any value in the range of the total heat load of the combustion system or the gas water heater*10% to the total heat load of the combustion system or the gas water heater*30%, and the preset heat load is preferably the total heat load of the combustion system or the gas water heater*20%. In other embodiments, the preset heat load can be any other value.

[0093] The present application also provides a gas water heater, which comprises a combustion system 1 as described in any one of the above embodiments.

[0094] Specifically, the gas water heater is a water heater or a wall-mounted boiler. In addition to the combustion system 1, the gas water heater also includes other components such as a housing and a control system. It is worth mentioning that the controller is a component of the control system.

[0095] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A combustion plate, characterized in that: The combustion plate is provided with a cooling channel (12) and a combustion hole (111); the cooling channel (12) is independent of the combustion hole (111), and the cooling channel (12) is arranged around the combustion hole (111).

2. The combustion plate according to claim 1, characterized in that A combustion plate inner cavity is provided in the combustion plate, and the combustion plate inner cavity structure forms the cooling flow channel (12).

3. The combustion plate according to claim 1 or 2, characterized in that: There are at least two combustion holes (111), and the combustion holes (111) are arranged along the first direction and / or the second direction; The first direction intersects the second direction.

4. The combustion plate according to claim 3, characterized in that The cooling channel (12) passes through the combustion plate along the first direction and / or the second direction.

5. The combustion plate according to claim 1, characterized in that There are at least two combustion holes (111), at least one of the combustion holes (111) is a first combustion hole (111a), and at least one of the combustion holes (111) is a second combustion hole (111b); Wherein, the combustion plate has a first combustion mode and / or a second combustion mode, and the combustion plate includes the first combustion mode and / or the second combustion mode. In the first combustion mode, the first combustion hole (111a) outputs one of the fuel gas and the combustion-supporting gas, and the second combustion hole (111b) outputs the other of the fuel gas and the combustion-supporting gas, or the fuel gas in the first combustion hole (111a) flows into the second combustion hole (111b) and is mixed with the combustion-supporting gas in the second combustion hole (111b) and then output; in the second combustion mode, the second combustion hole (111b) outputs a mixture of the fuel gas and the combustion-supporting gas.

6. The combustion plate according to claim 5, characterized in that The first combustion holes (111a) and the second combustion holes (111b) are alternately arranged along a first direction and / or a second direction, and the first direction intersects with the second direction.

7. A combustion device, characterized in that: Comprising a combustion plate as described in any one of claims 1 to 6 above.

8. The combustion device according to claim 7, characterized in that: The combustion device further comprises a liquid inlet pipe assembly (13) and a liquid outlet pipe assembly (14); the liquid inlet pipe assembly (13) is mounted at the liquid inlet of the cooling flow channel (12); and the liquid outlet pipe assembly (14) is mounted at the liquid outlet of the cooling flow channel (12).

9. A combustion system, characterized in that: It comprises a combustion device as described in any one of claims 7 to 8 above.

10. The combustion system according to claim 9, characterized in that: There are at least two combustion holes (111), at least one of the combustion holes (111) is a first combustion hole (111a), and at least one of the combustion holes (111) is a second combustion hole (111b); The combustion plate has a first combustion mode and / or a second combustion mode, and the combustion plate includes the first combustion mode and / or the second combustion mode. In the first combustion mode, the first combustion hole (111a) outputs one of the fuel gas and the combustion-supporting gas, and the second combustion hole (111b) outputs the other of the fuel gas and the combustion-supporting gas, or the fuel gas in the first combustion hole (111a) flows into the second combustion hole (111b) and is mixed with the combustion-supporting gas in the second combustion hole (111b) and then output; in the second combustion mode, the second combustion hole (111b) outputs a mixed gas of the fuel gas and the combustion-supporting gas; The combustion system further comprises a mixing device (20) and an air supply device (30), wherein the mixing device (20) is in communication with the second combustion hole (111b), the air supply device (30) comprises a first ventilation component (31), a second ventilation component (32) and a third ventilation component (33), the second ventilation component (32) and the third ventilation component (33) are both in communication with the mixing device (20), and the first ventilation component (31) is in communication with the first combustion hole (111a); The first ventilation assembly (31) and the second ventilation assembly (32) are both used to transport one of the fuel gas or the combustion-supporting gas, and the third ventilation assembly (33) is used to transport the other of the fuel gas or the combustion-supporting gas. At least one of the first ventilation assembly (31) and the second ventilation assembly (32) can be conducted.

11. The combustion system according to claim 10, characterized in that: The third ventilation component (33) comprises a first air supply component (331), and the air supply device (30) comprises a second air supply component, wherein the second air supply component can be in communication with the first ventilation component (31) and / or the second ventilation component (32).

12. The combustion system according to claim 11, characterized in that: The air supply device (30) further comprises a control valve, the control valve being used to control the connection or disconnection between the second air supply component and the first ventilation component (31); and / or the control valve being used to control the connection or disconnection between the second air supply component and the second ventilation component (32); when the heat load demand is less than a preset heat load amount, the control valve connects the second air supply component and the first ventilation component (31); when the heat load demand is greater than or equal to the preset heat load amount, the control valve connects the second air supply component and the second ventilation component (32).

13. A gas water heater, characterized in that: Comprising a combustion system as claimed in any one of claims 9 to 12 above.

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