Gas distribution part, gas distribution device, and gas apparatus

Abstract

The present application discloses a gas distribution part, a gas distribution device, and a gas apparatus. The gas distribution part comprises at least two gas distribution channels separated from each other; each gas distribution channel is provided with a gas inlet hole and a plurality of gas outlet nozzles communicated with the gas inlet hole, and the opening and closing of each gas inlet hole is controlled by one switch valve of a proportional valve; at least one gas distribution channel is an adjustable gas distribution channel, the adjustable gas distribution channel comprises at least two sub gas distribution channels separated from each other, each sub gas distribution channel is provided with at least one gas outlet nozzle, the gas inlet hole of the adjustable gas distribution channel comprises at least two sub gas inlet holes separated from each other, the sub gas inlet holes and the sub gas distribution channels are arranged in a one-to-one correspondence mode, and each sub gas inlet hole is communicated with the gas outlet nozzle of the corresponding sub gas distribution channel.

Description

Gas distribution parts, gas distribution devices and gas equipment

[0001] This application claims priority to Chinese patent application No. 202323668250.6 filed on December 29, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of gas equipment, and in particular to a gas distribution component, a gas distribution device and a gas equipment. Background Art

[0003] Current gas equipment (such as gas water heaters, wall-mounted boilers, etc.) usually includes multiple combustion components arranged side by side. When multiple combustion components are burning synchronously, the following situations often occur: the gas volume of multiple combustion components is inconsistent during gas distribution, and the air volume is adjusted to be consistent through the air supply components; or the gas volume of multiple combustion components is consistent, but due to the installation position relationship of the air supply components, the distributed air volume cannot be evenly delivered to each combustion component; or the gas volume is inconsistent, and the installation position relationship of the air supply components makes the distributed air volume inconsistent, etc.; it is difficult to achieve a consistent air-fuel ratio between each combustion component during synchronous combustion, resulting in higher flue gas emissions; at the same time, it is difficult to increase the overall load of the machine by increasing the number of combustion components after the combustion components are finalized, which seriously affects the development cost and standardization of large-liter machines. Technical issues

[0004] The main purpose of this application is to propose a gas distribution component, which aims to improve the precision of gas distribution debugging, reduce the difficulty of flame uniformity debugging during synchronous combustion of multiple combustion components, and facilitate the maintenance of consistent air-fuel ratio during synchronous combustion of multiple combustion components. Technical Solutions

[0005] To achieve the above-mentioned purpose, the gas distribution component proposed in this application is used to cooperate with the proportional valve of the gas distribution device. The gas distribution component includes at least two gas distribution channels separated from each other, each of the gas distribution channels has an air inlet hole and several air outlet nozzles connected to the air inlet hole, and the opening and closing of each of the air inlet holes is controlled by one of the switch valves of the proportional valve.

[0006] In one embodiment, at least one of the gas-separating channels is an adjustable gas-separating channel, and the adjustable gas-separating channel includes at least two mutually separated sub-gas-separating channels, each of the sub-gas-separating channels has at least one gas outlet nozzle, and the air inlet of the adjustable gas-separating channel includes at least two mutually separated sub-air inlet holes, and the sub-air inlet holes are arranged one-to-one with the sub-gas-separating channels, and each sub-air inlet hole is connected to the gas outlet nozzle of the corresponding sub-gas-separating channel.

[0007] In one embodiment, at least two of the gas distribution channels include a first gas distribution channel and a second gas distribution channel, the number of the gas outlet nozzles of the first gas distribution channel is greater than the number of the gas outlet nozzles of the second gas distribution channel, and the first gas distribution channel is the adjustable gas distribution channel.

[0008] In one embodiment, both the first gas distribution channel and the second gas distribution channel are the adjustable gas distribution channels.

[0009] In one embodiment, each of the sub-gas distribution channels of the adjustable gas distribution channel has the same number of the gas outlet nozzles.

[0010] In one embodiment, at least two of the sub-gas distribution channels of the adjustable gas distribution channel have different numbers of gas outlet nozzles.

[0011] In one embodiment, the gas outlet nozzles of at least part of the gas separation channels are arranged in at least two rows in the flow direction of the gas flow.

[0012] In one embodiment, at least one of the sub-inlet holes of the adjustable gas distribution channel is arranged as a circular hole.

[0013] In one embodiment, the wall of the air inlet of the adjustable air distribution channel is set in a conical surface, and the air inlet has a narrow end and a flared end opposite to each other in the axial direction. The flared end is constructed with a plurality of sub-air inlets separated from each other, and each sub-air inlet is connected to the narrow end to form a sub-air inlet, and the switch valve is used to open or close the narrow end.

[0014] In one embodiment, each of the gas distribution channels includes a first channel section extending along the height direction of the gas distribution component, and a second channel section extending along the length direction of the gas distribution component, the second channel section is located above the first channel section and is connected to the first channel section, the air inlet is provided at the bottom of the first channel section, and the side wall of the second channel section is provided with a plurality of the gas outlet nozzles spaced apart along its length direction.

[0015] In one embodiment, the gas distribution component includes a distribution component body, a pressure plate and a sealing gasket. The distribution component body has a cavity with an open side. The pressure plate covers the opening of the cavity. The pressure plate and the distribution component body are combined to form the gas distribution channel. The sealing gasket is arranged between the distribution component body and the pressure plate.

[0016] The present application also proposes a gas distribution device, comprising the gas distribution component and a proportional valve as described above.

[0017] In one embodiment, a proportional valve is connected to the gas distribution component, and the proportional valve has at least two switch valves. The switch valves are arranged one-to-one with the air inlet holes of the gas distribution component, and the switch valves are used to control the opening or closing of the corresponding air inlet holes.

[0018] The present application also proposes a gas device comprising the gas distribution device as described above. Beneficial effects

[0019] The gas distribution component of the technical solution of the present application includes at least two mutually separated gas distribution channels, with the air inlet of each gas distribution channel corresponding to one of the on / off valves of the proportional valve, and the corresponding on / off valve can be used to control the opening or closing of the air inlet. Furthermore, at least one of the gas distribution channels of the gas distribution component is configured as an adjustable gas distribution channel, and the adjustable gas distribution channel is further divided into two or more sub-gas distribution channels by designing a flow channel segmentation. Simultaneously, without changing the size of the air inlet of the adjustable gas distribution channel, the air inlet of the adjustable gas distribution channel is further divided into two or more sub-inlet holes, so that each sub-inlet hole corresponds to a sub-gas distribution channel, and each sub-gas distribution channel has at least one gas outlet nozzle. In this way, the original situation where a single air inlet simultaneously controls multiple air outlet nozzles of an adjustable air distribution channel can be optimized to a situation where a single sub-air inlet simultaneously controls the air outlet nozzle of a single sub-air distribution channel. Obviously, the number of air outlet nozzles of a single sub-air distribution channel is smaller than the total number of air outlet nozzles of the original adjustable air distribution channel. In this way, the precision of gas distribution debugging can be improved, and the difficulty of flame uniformity debugging during synchronous combustion of multiple combustion components can be reduced, which is conducive to maintaining consistent air-fuel ratio during synchronous combustion of multiple combustion components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] FIG1 is a schematic structural diagram of an embodiment of a gas separation device of the present application;

[0022] FIG2 is a schematic structural diagram of an embodiment of a gas distribution component of a gas distribution device;

[0023] FIG3 is a schematic diagram of the exploded structure of the gas distribution component in FIG2 ;

[0024] FIG4 is a front view of an embodiment of a gas distribution member body;

[0025] FIG5 is a front view of another embodiment of a gas distribution member body;

[0026] FIG6 is a schematic structural diagram of an embodiment of an air inlet hole of an adjustable air distribution channel.

[0027] Description of Figure Numbers:

[0028] Reference number name Reference number name 100 gas distribution device 101A first gas distribution channel 10 gas distribution component 101B second gas distribution channel 101 gas distribution channel 11 distribution component body 102 gas inlet hole 12 pressure plate 1021 sub-gas inlet hole 13 sealing gasket 103 gas outlet nozzle 20 proportional valve 1011 sub-gas distribution channel 21 switch valve

[0029] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] The gas distributor is the core component of gas equipment for achieving gas distribution. However, the structural design of the gas distribution parts of traditional gas distributors is unreasonable, resulting in low precision in gas distribution debugging, making it difficult to debug flame uniformity when multiple combustion components are burning synchronously.

[0034] In the related art, a gas distribution device generally includes a gas distribution component and a proportional valve. The gas distribution component is constructed to form a plurality of gas distribution channels, each of which has an air inlet and a plurality of air outlet nozzles connected to the air inlet. The opening and closing of each air inlet is controlled by one of the on-off valves of the proportional valve. Each air outlet nozzle corresponds to the air inlet of a combustion component (i.e., a fire grate) to deliver gas to the combustion component. It is understood that when the number of combustion components is large (for example, including but not limited to more than 10), the number of air outlet nozzles must be set accordingly, and one air inlet needs to be connected to multiple air outlet nozzles. Because a single air inlet of the gas distribution component needs to correspond to multiple air outlet nozzles at the same time, and the multiple air outlet nozzles are distributed over a large span, and there is flow resistance, etc., the gas flow delivered from the air inlet to each air outlet nozzle is unevenly distributed, which in turn leads to uneven gas flow distributed to each combustion component.

[0035] For example, most proportional valves currently on the market use a double-opening valve structure (that is, they have two on-off valves). Accordingly, the gas distribution component has two gas distribution channels, each with an air inlet and multiple gas outlet nozzles. Typically, to ensure the lowest temperature rise, the number of combustion components (that is, the number of gas outlet nozzles) controlled by the first stage (that is, the first on-off valve) is generally not too large, usually between 1 and 7. As a result, at high liters, the number of combustion components (that is, the number of gas outlet nozzles) that need to be controlled by the second stage (that is, the second on-off valve) will be large, generally ranging from 12 to 14, and even up to 16. This makes it difficult to debug the gas distribution for the multiple combustion components controlled by the second stage. Since the number of fire grate components controlled by the second section is too large, each combustion component cannot evenly distribute the gas flow due to the flow resistance. Based on this situation, in order to ensure the uniformity of the gas volume of each combustion component, high requirements are required for the control of the flow channel of the gas distribution component. However, most products have been unbalanced, making it difficult to ensure the consistency of the air-fuel ratio under the premise of the consistent amount of air sent in by the air supply component. In addition, even if the flow channel of the gas distribution component is designed to make the gas volume uniform, the air supply component will cause the amount of air sent into the combustion component to be inconsistent due to the installation position, or it is difficult to adjust the air volume to be consistent, which will also lead to inconsistent air-fuel ratios for each combustion component. These situations will make the machine prone to excessive smoke emissions, vibration of the whole machine, flame separation, backfire and other poor combustion phenomena. Therefore, there are few products on the market that increase the load of the entire machine by increasing the number of combustion components. The general practice is to lengthen the length of a single combustion component to increase the load. However, the disadvantage of this is that it will increase the thickness of the entire machine, and the longer the combustion component, the more it will affect the mapping of gas and primary air, and it will also make it difficult to ensure the uniformity of gas in each fire hole on the same fire grid.

[0036] Based on this, this application optimizes the structure of the gas distribution component 10 of the gas distribution device 100 to improve the precision of gas distribution adjustment, reduce the difficulty of adjusting flame uniformity during the simultaneous combustion of multiple combustion components, and facilitate the maintenance of a consistent air-fuel ratio during the simultaneous combustion of multiple combustion components. It also overcomes the limit on the number of combustion components in a single machine, making it easier to increase the number of combustion components to increase the overall load.

[0037] 1 to 5, in one embodiment of the present application, the gas distribution component 10 is used to cooperate with the proportional valve 20 of the gas distribution device 100, and the gas distribution component 10 includes at least two gas distribution channels 101 separated from each other, each of the gas distribution channels 101 has an air inlet 102 and a plurality of gas outlet nozzles 103 connected to the air inlet 102, and the opening and closing of each of the air inlet 102 is controlled by one of the switch valves 21 of the proportional valve 20; wherein, at least one of the gas distribution channels 101 is adjustable. The adjustable gas-dividing channel includes at least two mutually separated sub-gas-dividing channels 1011, each of the sub-gas-dividing channels 1011 has at least one gas outlet nozzle 103, and the gas inlet hole 102 of the adjustable gas-dividing channel includes at least two mutually separated sub-gas inlet holes 1021, and the sub-gas inlet holes 1021 are arranged one-to-one with the sub-gas-dividing channels 1011, and each sub-gas inlet hole 1021 is connected to the gas outlet nozzle 103 corresponding to the sub-gas-dividing channel 1011.

[0038] The gas distribution component 10 includes at least two gas distribution channels 101 separated from each other. The air inlet 102 of each gas distribution channel 101 is corresponding to one of the switch valves 21 of the proportional valve 20, and the air inlet 102 can be controlled to open or close by the corresponding switch valve 21. Among them, at least one of the gas distribution channels 101 is an adjustable gas distribution channel. For example, the number of gas distribution channels 101 can be two, three or more. Taking the number of two gas distribution channels 101 as an example, for the convenience of description, they are respectively recorded as the first gas distribution channel 101A and the second gas distribution channel 101B, then at least one of the first gas distribution channel 101A and the second gas distribution channel 101B is an adjustable gas distribution channel. The so-called adjustable gas separation channel is a flow channel segmentation design based on the original gas separation channel 101, so as to further divide the gas separation channel 101 into two or more sub-gas separation channels 1011. At the same time, without changing the size of the air inlet hole 102 of the gas separation channel 101, the air inlet hole 102 of the gas separation channel 101 is further divided into two or more sub-air inlet holes 1021, so that each sub-air inlet hole 1021 corresponds to a sub-gas separation channel 1011, and each sub-gas separation channel 1011 has at least one gas outlet nozzle 103. For example, the first gas distribution channel 101A has 12 gas outlet nozzles 103, and the second gas distribution channel 101B has 6 gas outlet nozzles 103. Since the single gas inlet hole 102 of the first gas distribution channel 101A needs to simultaneously control 12 gas outlet nozzles 103 (corresponding to 12 combustion components), the precision of gas distribution adjustment is relatively low. Therefore, the first gas distribution channel 101A can be used as an adjustable gas distribution channel, and the first gas distribution channel 101A and its gas inlet hole 102 can be divided. Of course, the second gas distribution channel 101B and its gas inlet hole 102 can also be divided. It should be noted that although the gas inlet hole 102 of the adjustable gas distribution channel is divided into multiple (i.e., at least two) sub-gas inlet holes 1021, the opening and closing of the multiple sub-gas inlet holes 1021 are simultaneously controlled by one of the switch valves 21 of the proportional valve 20. That is, the switch valve 21 can control the simultaneous opening or closing of the multiple sub-gas inlet holes 1021.

[0039] There are many ways to divide the adjustable gas distribution channel. For example, the first gas distribution channel 101A can be divided into two sub-gas distribution channels 1011, and accordingly, the air inlet 102 of the first gas distribution channel 101A can be split into two sub-air inlet holes 1021, and each sub-gas distribution channel 1011 has 6 air outlet nozzles 103, that is, each sub-air inlet hole 1021 corresponds to 6 air outlet nozzles 103; or, one of the sub-gas distribution channels 1011 has 3 air outlet nozzles 103, and the other sub-gas distribution channel 1011 has 3 air outlet nozzles 103. If the channel 1011 has 9 gas outlet nozzles 103, then one of the sub-gas inlet holes 1021 corresponds to 3 gas outlet nozzles 103, and the other sub-gas inlet hole 1021 corresponds to 9 gas outlet nozzles 103; or, if one of the sub-gas-dividing channels 1011 has 2 gas outlet nozzles 103, and the other sub-gas-dividing channel 1011 has 10 gas outlet nozzles 103, then one of the sub-gas inlet holes 1021 corresponds to 2 gas outlet nozzles 103, and the other sub-gas inlet hole 1021 corresponds to 10 gas outlet nozzles 103. Alternatively, it can be split into a larger number of sub-gas channels 1011. For example, the first gas channel 101A can be divided into four sub-gas channels 1011. Correspondingly, the air inlet 102 of the first gas channel 101A can be split into four sub-gas inlet holes 1021. Each sub-gas channel 1011 has three gas outlet nozzles 103, that is, each sub-gas inlet hole 1021 corresponds to three gas outlet nozzles 103. The above splitting method is only an example. In actual application, other splitting methods can be adopted according to specific circumstances, and are not specifically limited here. For example, the finest split can be one sub-gas channel 1011 corresponding to one gas outlet nozzle 103; or it can be split into one sub-gas channel 1011 corresponding to two or more gas outlet nozzles 103. In addition, the number of gas outlet nozzles 103 of the adjustable channel (that is, the number of corresponding combustion components) can be 18, 19, 20, 21, and so on.

[0040] In addition, the shape of the sub-air inlet hole 1021 can be a circular hole, a square hole, a triangular hole, or other special-shaped holes, etc. The shapes and sizes of the multiple sub-air inlet holes 1021 separated from the same air inlet hole 102 can be the same or different. By splitting a large air inlet hole 102 into multiple sub-air inlet holes 1021 of controllable size, the debugging of the multiple combustion components corresponding to the multiple gas outlet nozzles 103 of the original adjustable gas distribution channel is changed to the debugging of the combustion component corresponding to the gas outlet nozzle 103 of each sub-gas distribution channel 1011, so that the gas distribution debugging of the combustion component can be more detailed. For example, the first gas distribution channel 101A can be divided into two sub-gas distribution channels 1011, and accordingly, the air inlet 102 of the first gas distribution channel 101A can be split into two sub-air inlet holes 1021. Each sub-gas distribution channel 1011 has 6 gas outlet nozzles 103, that is, each sub-air inlet hole 1021 corresponds to 6 gas outlet nozzles 103 (that is, corresponds to 6 combustion components); in this way, the gas distribution debugging of the original 12 combustion components can be changed to two groups, each group corresponds to the debugging of 6 combustion components, which is conducive to improving the precision of the gas distribution debugging of the combustion components and reducing the difficulty of debugging.

[0041] The gas distribution component 10 of the technical solution of the present application includes at least two mutually separated gas distribution channels 101. The gas inlet hole 102 of each gas distribution channel 101 is correspondingly provided with one of the on-off valves 21 of the proportional valve 20. The gas inlet hole 102 can be controlled to open or close by the corresponding on-off valve 21. In addition, at least one of the gas distribution channels 101 of the gas distribution component 10 is used as an adjustable gas distribution channel. By designing the flow path of the adjustable gas distribution channel, the adjustable gas distribution channel is further divided into two or more sub-gas distribution channels 1011. At the same time, without changing the size of the gas inlet hole 102 of the adjustable gas distribution channel, the gas inlet hole 102 of the adjustable gas distribution channel is further divided into two or more sub-gas inlet holes 1021, so that each sub-gas inlet hole 1021 corresponds to a sub-gas distribution channel 1011, and each sub-gas distribution channel 1011 has at least one gas outlet nozzle 103. In this way, the original situation where a single air inlet 102 simultaneously controls multiple air outlet nozzles 103 of the adjustable air distribution channel can be optimized to a situation where a single sub-air inlet 1021 simultaneously controls the air outlet nozzle 103 of a single sub-air distribution channel 1011. Obviously, the number of air outlet nozzles 103 of a single sub-air distribution channel 1011 is smaller than the total number of air outlet nozzles 103 of the original adjustable air distribution channel. In this way, the precision of gas distribution debugging can be improved, and the difficulty of flame uniformity debugging during synchronous combustion of multiple combustion components can be reduced, which is conducive to achieving consistent air-fuel ratio during synchronous combustion of multiple combustion components.

[0042] By optimizing the structure of the gas distribution component 10, the gas distribution between multiple combustion components can be more refined, and the precision of flame uniformity debugging can be taken to a higher level, solving the problem of difficult flame uniformity debugging when multiple combustion components are burning simultaneously; in this way, it is also convenient to use the solution of increasing the number of combustion components to increase the load of the whole machine, which is convenient for reducing the cost of the machine and facilitating standardization; it is also possible to more accurately control the air-fuel ratio between each combustion component, better debug the flue gas emissions, and shorten the development cycle.

[0043] As shown in Figures 4 and 5, in some embodiments, at least two of the gas distribution channels 101 include a first gas distribution channel 101A and a second gas distribution channel 101B, the number of the gas outlet nozzles 103 of the first gas distribution channel 101A is greater than the number of the gas outlet nozzles 103 of the second gas distribution channel 101B, and the first gas distribution channel 101A is the adjustable gas distribution channel.

[0044] In this embodiment, exemplarily, as shown in Figure 5, the first gas distribution channel 101A has 12 gas outlet nozzles 103 (corresponding to 12 combustion components), and the second gas distribution channel 101B has 6 gas outlet nozzles 103 (corresponding to 6 combustion components). The first gas distribution channel 101A is split as an adjustable gas distribution channel, so that the first gas distribution channel 101A is split into two sub-gas distribution channels 1011, and the air inlet 102 of the first gas distribution channel 101A is split into two sub-gas distribution channels 1021 of controllable size, each sub-gas distribution channel 1021 corresponds to a sub-gas distribution channel 1011, and each sub-gas distribution channel 1011 has 6 gas outlet nozzles 103. Since the number of gas outlet nozzles 103 of the first gas distribution channel 101A is greater than the number of gas outlet nozzles 103 of the second gas distribution channel 101B, it is more difficult to debug the gas distribution of the multiple combustion components corresponding to the multiple gas outlet nozzles 103 of the first gas distribution channel 101A. Therefore, the first gas distribution channel 101A can be used as an adjustable gas distribution channel, and the first gas distribution channel 101A and its air inlet hole 102 can be split to improve the precision of gas distribution debugging, reduce the difficulty of flame uniformity debugging during synchronous combustion of multiple combustion components, and facilitate to achieve consistent air-fuel ratio during synchronous combustion of multiple combustion components.

[0045] Of course, in some embodiments, both the first gas distribution channel 101A and the second gas distribution channel 101B are adjustable gas distribution channels. This can improve the precision of gas distribution adjustment of the first gas distribution channel 101A and the second gas distribution channel 101B, thereby further reducing the difficulty of flame uniformity adjustment during the synchronous combustion of multiple combustion components, and facilitating the consistent air-fuel ratio during the synchronous combustion of multiple combustion components.

[0046] There are many ways to separate the multiple gas outlet nozzles 103 of the adjustable gas-dividing channel. For example, as shown in Figures 4 and 5, in some embodiments, each of the sub-gas-dividing channels 1011 of the adjustable gas-dividing channel has the same number of gas outlet nozzles 103. That is, the number of gas outlet nozzles 103 of the adjustable gas-dividing channel is divided equally according to the number of separated sub-gas-dividing channels 1011. Exemplarily, as shown in Figure 5, the number of gas outlet nozzles 103 of the adjustable gas-dividing channel is 12, which can be divided into two groups, each with 6 gas outlet nozzles 103. Accordingly, the adjustable gas-dividing channel is divided into two sub-gas-dividing channels 1011, and each sub-gas-dividing channel 1011 has 6 gas outlet nozzles 103.

[0047] Of course, in some embodiments, at least two of the sub-gas-splitting channels 1011 of the adjustable gas-splitting channel have different numbers of gas outlet nozzles 103. For example, an adjustable gas-splitting channel with 12 gas outlet nozzles 103 is divided into two sub-gas-splitting channels 1011, where one gas-splitting channel 101 has three gas outlet nozzles 103 and the other gas-splitting channel 101 has nine gas outlet nozzles 103.

[0048] When multiple outlet nozzles 103 are provided in the gas distribution channel 101, the multiple outlet nozzles 103 can be arranged in a single row, two rows, three rows or more. A single outlet nozzle 103 is suitable for atmospheric combustion, and two or more rows of outlet nozzles 103 are suitable for rich-lean combustion.

[0049] In one embodiment, the outlet nozzles 103 of at least some of the gas distribution channels 101 are arranged in at least two rows along the direction of airflow. The airflow direction can be understood as the direction of airflow from the air inlet 102 to the outlet nozzles 103. For example, as shown in Figure 5, in one embodiment, the air inlet 102 is located at the bottom of the gas distribution component 10, and the multiple outlet nozzles 103 are located at the top of the gas distribution component 10. In this case, the airflow direction is also the height direction of the gas distribution component 10. Each gas distribution channel 101 has multiple outlet nozzles 103, and the multiple outlet nozzles 103 of each gas distribution channel 101 are arranged in two rows along the height direction of the gas distribution component 10.

[0050] In one embodiment, at least one of the sub-inlet holes 1021 of the adjustable gas distribution channel is configured as a circular hole. A circular hole structure facilitates size adjustments during gas commissioning. For example, one sub-inlet hole 1021 may be circular, while the others may be non-circular; alternatively, all sub-inlet holes 1021 may be circular.

[0051] As shown in Figure 6, in one embodiment, the hole wall of the air inlet 102 of the adjustable air distribution channel is set in a conical surface, and the air inlet 102 has a narrow end and a flared end opposite to each other in the axial direction. The flared end is constructed with a plurality of sub-air inlets separated from each other, and each of the sub-air inlets is connected to the narrow end to form a sub-air inlet 1021, and the switch valve 21 is used to open or close the narrow end.

[0052] In this embodiment, to address the limited size of the air inlet 102, a draft angle can be applied to the air inlet 102 before the sub-inlet is split. This allows the air inlet 102 to be generally tapered, with more space at the expanded end for channel division. Furthermore, by opening or closing the narrow end of the air inlet 102 with the on-off valve 21, the opening and closing of multiple sub-inlet holes 1021 can be conveniently and simultaneously controlled.

[0053] As shown in Figures 4 and 5, in some embodiments, each of the gas distribution channels 101 includes a first channel section extending along the height direction of the gas distribution component 10, and a second channel section extending along the length direction of the gas distribution component 10, the second channel section is located above the first channel section and is connected to the first channel section, the air inlet 102 is provided at the bottom of the first channel section, and the side wall of the second channel section is provided with a plurality of the gas outlet nozzles 103 at intervals along its length direction.

[0054] In this embodiment, in the length direction of the gas distribution component 10, the size of the first channel section is narrower than that of the second channel section. When the air inlet 102 of the corresponding gas distribution channel 101 is opened, the gas enters the first channel section through the air inlet 102, and can flow upward to the second channel section under the guidance of the first channel section, and then diffuse along the length direction of the second channel section to each gas outlet nozzle 103, so that the gas distribution amount of each gas outlet nozzle 103 is uniform.

[0055] Based on the above embodiment, as shown in Figure 3, in one embodiment, the gas distribution component 10 includes a distribution component body 11, a pressure plate 12 and a sealing gasket 13. The distribution component body 11 has a cavity with an open side, and the pressure plate 12 covers the opening of the cavity. The pressure plate 12 and the distribution component body 11 enclose the gas distribution channel 101, and the sealing gasket 13 is arranged between the distribution component body 11 and the pressure plate 12.

[0056] In this embodiment, the distribution unit body 11 comprises a cavity with one side open. Several dividing ribs are provided within the cavity to separate the cavity into several gas distribution channels 101. The cavity wall facing away from the open end is provided with an air inlet 102 and several gas outlet nozzles 103. A pressure plate 12 covers the open side of the cavity and is secured to the distribution unit body 11 via fasteners (e.g., screws, bolts, etc.). A sealing gasket 13 is provided between the distribution unit body 11 and the pressure plate 12 to ensure a secure seal and prevent gas leakage.

[0057] As shown in Figure 1 , this application also proposes a gas distribution device 100, comprising a gas distribution component 10 and a proportional valve 20 connected to the gas distribution component 10. The proportional valve 20 has at least two on-off valves 21, each of which is assigned a one-to-one relationship with the gas inlet holes 102 of the gas distribution component 10. The on-off valves 21 are used to control the opening or closing of the corresponding gas inlet holes 102. The specific structure of the gas distribution component 10 is similar to that of the aforementioned embodiments. Since the present gas distribution device 100 utilizes all the technical solutions of all the aforementioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore will not be further elaborated here.

[0058] This application also proposes a gas appliance, which includes a gas distribution device 100. The specific structure of the gas distribution device 100 refers to the above-mentioned embodiment. Since this gas appliance adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. The gas appliance includes but is not limited to gas water heaters, wall-mounted boilers, etc. Among them, gas water heaters include but are not limited to forced drum type, forced extraction type, natural supply and exhaust type, outdoor type, and all other gas water heater models that require gas distribution.

[0059] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A gas distribution part for cooperating with a proportional valve of a gas distribution device, wherein, The gas distribution component includes at least two mutually separated gas distribution channels. Each gas distribution channel has an air inlet hole and a plurality of air outlet nozzles communicated with the air inlet hole. The opening and closing of each air inlet hole is controlled by one of the switching valves of the proportional valve. Wherein, at least one of the gas distribution channels is an adjustable gas distribution channel. The adjustable gas distribution channel includes at least two mutually separated sub-gas distribution channels. Each sub-gas distribution channel has at least one of the air outlet nozzles. The air inlet hole of the adjustable gas distribution channel includes at least two mutually separated sub-air inlet holes. The sub-air inlet holes are arranged in one-to-one correspondence with the sub-gas distribution channels. Each sub-air inlet hole is communicated with the air outlet nozzle of the corresponding sub-gas distribution channel.

2. The gas distribution member according to claim 1, wherein, At least two of the gas distribution channels include a first gas distribution channel and a second gas distribution channel. The number of the air outlet nozzles of the first gas distribution channel is greater than that of the second gas distribution channel. The first gas distribution channel is the adjustable gas distribution channel.

3. The gas distribution member according to claim 2, wherein, Both the first gas distribution channel and the second gas distribution channel are the adjustable gas distribution channels.

4. The gas distribution part according to any one of claims 1 to 3, wherein, Each sub-gas distribution channel of the adjustable gas distribution channel has the same number of the air outlet nozzles. Alternatively, at least two of the sub-gas distribution channels of the adjustable gas distribution channel have different numbers of the air outlet nozzles.

5. The gas distribution part according to any one of claims 1 to 4, wherein, The air outlet nozzles of at least part of the gas distribution channels are arranged in at least two rows in the air flow direction.

6. The gas distribution part according to any one of claims 1 to 5, wherein, At least one of the sub-air inlet holes of the adjustable gas distribution channel is arranged as a circular hole.

7. The gas distribution member according to any one of claims 1 to 6, wherein, The pore wall of the air inlet hole of the adjustable gas distribution channel is arranged as a conical surface. The air inlet hole has a narrow end and a flared end opposite to each other along the axis. The flared end is configured with a plurality of mutually separated sub-air inlets. Each sub-air inlet is communicated with the narrow end to form one of the sub-air inlet holes. The switching valve is used to open or close the narrow end.

8. The gas distribution part according to any one of claims 1 to 7, wherein Each gas distribution channel includes a first channel section extending along the height direction of the gas distribution component, and a second channel section extending along the length direction of the gas distribution component. The second channel section is located above the first channel section and communicated with the first channel section. The air inlet hole is arranged at the bottom of the first channel section. A plurality of the air outlet nozzles are arranged at intervals along the length direction of the side wall of the second channel section.

9. The gas distribution member according to any one of claims 1 to 8, wherein, The gas distribution component includes a distribution component body, a pressing plate and a gasket. The distribution component body has a cavity with one side open. The pressing plate covers the open part of the cavity. The pressing plate and the distribution component body enclose to form the gas distribution channel. The gasket is arranged between the distribution component body and the pressing plate.

10. A gas distribution device, wherein, The gas distribution device includes: The gas distribution component according to any one of claims 1 to 9; and A proportional valve connected to the gas distribution component. The proportional valve has at least two switching valves. The switching valves are arranged in one-to-one correspondence with the air inlet holes of the gas distribution component. The switching valves are used to control the opening or closing of the corresponding air inlet holes.

11. A gas appliance, wherein, The gas equipment includes the gas distribution device according to claim 10.

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