Gas distribution part, gas distribution device, and gas apparatus

Abstract

The present application discloses a gas distribution part, a gas distribution device and gas equipment. The gas distribution part used for being matched with a proportional valve of a gas distribution device. The gas distribution part includes at least two gas distribution channels separated from each other. Each gas distribution channel is provided with an air inlet hole and a plurality of air outlet nozzles communicating with the air inlet hole. The opening and closing of each air inlet hole are controlled by one of switch valves of the proportional valve.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The application claims priority of Chinese patent application CN202323668250.6, filed on December 29, 2023, which is incorporated herein by reference in its entireties.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of gas equipment, in particular to a gas distribution part, a gas distribution device and gas distribution equipment.BACKGROUND

[0003] The existing gas equipment (such as gas water heaters and wall-hanging stoves) usually comprises a plurality of combustion assemblies arranged side by side. During synchronous combustion of the plurality of combustion assemblies, the following situations often exist. A plurality of combustion assemblies are inconsistent in gas quantity during gas distribution, but the gas quantity is adjusted to be consistent through an air supply component. Or, the gas quantities of the plurality of combustion assemblies are the same, but the distributed air cannot be uniformly delivered to each combustion assembly due to the installation position relationship of the air supply component. Or, the gas quantity is inconsistent, and the installation position relationship of the air supply component makes the amount of distributed air inconsistent. Therefore, it is difficult for each combustion assembly to achieve consistent air-fuel ratio during synchronous combustion, resulting in higher flue gas emissions. At the same time, after the combustion assemblies of the machine are finalized, it is difficult to increase the load of the whole machine by increasing the number, which seriously affects the development cost and standardization of large-liter machines.SUMMARY

[0004] The main purpose of the present disclosure is to provide a gas distribution part to improve the precision of gas distribution debugging, so that the difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies is reduced, and the air-fuel ratio is consistent during synchronous combustion of multiple combustion assemblies.

[0005] In order to achieve the above object, the present application discloses a gas distribution part, used for being matched with a proportional valve of a gas distribution device. The gas distribution part comprises at least two gas distribution channels separated from each other. Each of the gas distribution channel is provided with an air inlet hole and a plurality of air outlet nozzles communicating with the air inlet hole. The opening and closing of each of the air inlet hole are controlled by one of a plurality of switch valves of the proportional valve.

[0006] In one embodiment, at least one of the 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 of the sub-gas distribution channel is provided with at least one of the air outlet nozzle. The air inlet hole of the adjustable gas distribution channel comprises at least two sub-air inlet holes separated from each other. The sub-air inlet hole and the sub-gas distribution channel are arranged in one-to-one correspondence. Each of the sub-air inlet hole communicates with the air outlet nozzle of the corresponding sub-gas distribution channel.

[0007] In one embodiment, at least two of the gas distribution channels comprise 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 larger than that of the air outlet nozzles of the second gas distribution channel. The first gas distribution channel is an adjustable gas distribution channel.

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

[0009] In one embodiment, the sub-gas distribution channels of the adjustable gas distribution channel are provided with the same number of the air outlet nozzles.

[0010] Or, at least two of the sub-gas distribution channels of the adjustable gas distribution channel are provided with different numbers of the air outlet nozzles.

[0011] In one embodiment, the air outlet nozzles of at least part of the gas distribution channel are arranged in at least two rows in a gas flow direction.

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

[0013] In one embodiment, the hole wall of the air inlet hole of the adjustable gas distribution channel is arranged in the shape of a conical surface. The air inlet hole is provided with a narrow end and a flared end which are opposite along the axial direction. The flared end is constructed into a plurality of sub-air inlets separated from one another. Each of the sub-air inlet communicates with the narrow end to form one of the sub-air inlet holes. The switch valve is used for opening or closing the narrow end.

[0014] In one embodiment, each of the gas distribution channel comprises a first channel section extending along the height direction of the gas distribution part and a second channel section extending along the length direction of the gas distribution part. The second channel section is located above the first channel section and communicates with the first channel section. The air inlet hole is formed in the bottom of the first channel section. A side wall of the second channel section is provided with a plurality of air outlet nozzles at intervals along the length direction of the second channel section.

[0015] In one embodiment, the gas distribution part comprises a distribution part body, a pressing plate and a sealing gasket. A cavity with an open end is formed in the distribution part body. The open end of the cavity is covered with the pressing plate. The pressing plate and the distribution part body are enclosed to form the gas distribution channel. The sealing gasket is arranged between the distribution part body and the pressing plate.

[0016] The present application also provides a gas distribution device, which comprises a gas distribution part described above and a proportional valve.

[0017] The proportional valve connected with the gas distribution part. The proportional valve is provided with at least two switch valves. The switch valve and the air inlet hole of the gas distribution part are arranged in one-to-one correspondence. The switch valve is used for controlling the opening or closing of the corresponding air inlet hole.

[0018] The present application also provides a gas equipment. The gas equipment comprises a gas distribution device described above.

[0019] Beneficial effects: The gas distribution part in the technical scheme of the present disclosure comprises at least two gas distribution channels separated from each other. The air inlet hole of each gas distribution channel is arranged correspondingly to one of switch valves of the proportional valve. The opening and closing of the air inlet hole can be controlled by the corresponding switch valve. Moreover, at least one gas distribution channel of the gas distribution part serves as an adjustable gas distribution channel, and flow channel splitting design is performed on the adjustable gas distribution channel, the adjustable gas distribution channel is further split into two or more sub-gas distribution channels. At the same time, the air inlet hole of the adjustable gas distribution channel is further divided into two or more sub-air inlet holes without changing the size of the air inlet hole of the gas distribution channel, so that each sub-air inlet hole corresponds to one sub-gas distribution channel, and each sub-gas distribution channel is provided with at least one air outlet nozzle. In this way, the original situation that the single air inlet hole simultaneously controls a plurality of air outlet nozzles of the adjustable gas distribution channel can be optimized to the situation that a single sub-air inlet hole simultaneously controls the air outlet nozzle of the single sub-gas distribution channel. Obviously, the number of the air outlet nozzles of the single sub-gas distribution channel is smaller than the original total number of the air outlet nozzles of the adjustable gas distribution channel. Thus, the precision of gas distribution debugging can be improved, the difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies is reduced, and the air-fuel ratio is consistent during synchronous combustion of multiple combustion assemblies.BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative work. FIG. 1 is a structural schematic diagram of a gas distribution device in one embodiment of the present disclosure. FIG. 2 is a structural schematic diagram of a gas distribution part of a gas distribution device in one embodiment. FIG. 3 is a breakdown structural schematic diagram of a gas distribution part in FIG. 2. FIG. 4 is a front view of a distribution part body of a gas distribution part in one embodiment. FIG. 5 is a front view of a distribution part body of a gas distribution part in another embodiment. FIG. 6 is a structural schematic diagram of an air inlet hole of an adjustable gas distribution channel in one embodiment. Reference signs in the attached figures:

[0021] MarksNamesMarksNames100gas distribution device101Afirst gas distribution channel10gas distribution part101Bsecond gas distribution channel101gas distribution channel11distribution part body102air inlet hole12pressing plate1021sub-air inlet hole13sealing gasket103air outlet nozzle20proportional valve1011sub-gas distribution channel21switch valve

[0022] The object realization, functional characteristics and advantages of the present disclosure are further described with reference to the attached figures in conjunction with the embodiments.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those ordinarily skilled in the art without doing creative work shall fall within the protection scope of the present application.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain a relative positional relationship between components, motion situations, etc. at a certain specific attitude (as shown in the figures). If the specific attitude changes, the directional indication also correspondingly changes.

[0025] In addition, the descriptions of "first", "second", etc. in the present application are only used for descriptive purposes, and cannot be understood as indicating or implying its relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined by "first" and "second" can explicitly instruct or impliedly comprise at least one feature. In addition, "and / or" in the entire text comprises three solutions. A and / or B is taken as an example, comprising technical solution A, technical solution B, and technical solutions that both A and B satisfy. In addition, the technical solutions between the various embodiments can be combined with each other, but it needs be based on what can be achieved by those of ordinary skill in the art. When the combination of the technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0026] The gas distribution device is a core component for realizing gas distribution in gas equipment, but the structural design of the gas distribution part of the traditional gas distribution device is unreasonable, so that the precision of gas distribution debugging is relatively low, resulting in difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies.

[0027] In the related technologies, the gas distribution device generally comprises a gas distribution part and a proportional valve. The gas distribution part is constructed into a plurality of gas distribution channels. Each gas distribution channel is provided with an air inlet hole and a plurality of air outlet nozzles communicating with the air inlet hole. The opening and closing of each air inlet hole are controlled by one of switch valves of the proportional valve. Each air outlet nozzle corresponds to an air inlet of one combustion assembly (i.e. fire rows) so as to convey gas to the combustion assembly. It is understandable that when the number of the combustion assemblies is large (for example, comprising but not limited to 10 or more), the number of the air outlet nozzles is multiple correspondingly, and one air inlet hole needs to communicate with a plurality of air outlet nozzles. A single air inlet hole of the gas distribution part needs to correspond to a plurality of air outlet nozzles at the same time, and the distribution position span of the air outlet nozzles is large, and the flow distribution of gas conveyed from the air inlet hole to each air outlet nozzle is non-uniform due to flow channel resistance, and then the gas quantity of each combustion assembly is non-uniform in distribution.

[0028] For example, most proportional valve structures currently on the market are double-opening valve structures (i.e., provided with two switch valves). Accordingly, the gas distribution part is provided with two gas distribution channels. Each gas distribution channel is provided with one air inlet hole and a plurality of air outlet nozzles. Generally, in order to ensure the lowest temperature rise, the number of the combustion assemblies (i.e. the number of the air outlet nozzles) controlled by the first section (i.e. the first switch valve) is generally not too large, usually between 1 and 7, resulting in that the number of the combustion assemblies (i.e., the number of the air outlet nozzles) that need to be controlled in the second section (i.e., the second switch valve) will be large in large-liter machines, generally 12 to 14, and even 16, so it is difficult to debug the gas distribution for a plurality of combustion assemblies controlled in the second section. Because the number of the fire rows controlled in the second section is too large, each combustion assembly cannot evenly distribute the gas flow due to flow channel resistance. Based on this situation, in order to ensure the uniformity of the gas quantity of each combustion assembly, it is necessary to have high requirements on the control of the flow channel of the gas distribution part, but most products have been controlled out of balance, so that it is difficult to ensure the consistency of the air-fuel ratio under the premise that the quantity of air fed in by the air supply component is consistent. In addition, even if the flow channel of the gas distribution part is designed to make the gas quantity uniform, due to the installation position of the air supply component, the quantity of air fed into the combustion assembly is inconsistent, or it is difficult to adjust the air quantity to be consistent, thereby causing the air-fuel ratio of each combustion component to be inconsistent. These situations cause the machine to be prone to poor combustion phenomena such as excessive flue gas emissions, vibration of the whole machine, flame leaving and backfire. Therefore, there are few products on the market that increase the load of the whole machine by increasing the number of combustion assemblies. The general method is to lengthen the length of a single combustion assembly to increase the load. However, the disadvantages of the method lie in that the thickness of the whole machine is increased, the longer the length of the combustion assembly, the mapping of gas and primary air will also be affected, thus also resulting in that it is difficult to ensure the uniformity of gas in each fire hole on the same fire row.

[0029] Based on this, the structure of the gas distribution part 10 of the gas distribution device 100 is optimized in the present disclosure, so that the precision of gas distribution debugging can be improved, the difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies is reduced, and the air-fuel ratio is consistent during synchronous combustion of multiple combustion assemblies. At the same time, the limit of the number of combustion assemblies of a single machine, can also be broken through and it is more convenient to use the scheme of increasing the number of combustion assemblies to increase the load of the whole machine.

[0030] Referring to FIG. 1 to FIG. 5, in one embodiment of the present disclosure, the gas distribution part 10 is used for being matched with a proportional valve 20 of a gas distribution device 100. The gas distribution part 10 comprises at least two gas distribution channels 101 separated from each other. Each gas distribution channel 101 is provided with an air inlet hole 102 and a plurality of air outlet nozzles 103 communicating with the air inlet hole 102. The opening and closing of each air inlet hole 102 are controlled by one of switch valves 21 of the proportional valve 20. Wherein, at least one gas distribution channel 101 is an adjustable gas distribution channel. The adjustable gas distribution channel comprises at least two sub-gas distribution channels 1011 separated from each other. Each sub-gas distribution channel 1011 is provided with at least one air outlet nozzle 103. The air inlet hole 102 of the adjustable gas distribution channel comprises at least two sub-air inlet holes 1021 separated from each other. The sub-air inlet hole 1021 and the sub-gas distribution channel 1011 are arranged one to one. Each sub-air inlet hole 1021 communicates with the air outlet nozzle 103 of the corresponding sub-gas distribution channel 1011.

[0031] The gas distribution part 10 comprises at least two gas distribution channels 101 separated from each other. The air inlet hole 102 of each gas distribution channel 101 is arranged correspondingly to one of switch valves 21 of the proportional valve 20. The opening and closing of the air inlet hole 102 can be controlled by the corresponding switch valve 21. Wherein, at least one gas distribution channel 101 is an adjustable gas distribution channel. For example, the number of the gas distribution channels 101 may be two, three, or more. Taking the number of the gas distribution channels 101 as two as an example, for convenience of description, the number of the gas distribution channels 101 is denoted as a first gas distribution channel 101A and a second gas distribution channel 101B respectively, and 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 distribution channel means that the flow channel division design is performed on the basis of the original gas distribution channel 101 to further divide the gas distribution channel 101 into two or more sub-gas distribution channels 1011. At the same time, the air inlet hole 102 of the gas distribution channel 101 is further divided into two or more sub-air inlet holes 1021 without changing the size of the air inlet hole 102 of the gas distribution channel 101, so that each sub-air inlet hole 1021 corresponds to one sub-gas distribution channel 1011, and each sub-gas distribution channel 1011 is provided with at least one air outlet nozzle 103. For example, the first gas distribution channel 101A is provided with twelve air outlet nozzles 103, and the second gas distribution channel 101B is provided with six air outlet nozzles 103. A single gas inlet hole 102 of the first gas distribution channel 101A needs to simultaneously control twelve air outlet nozzles 103 (corresponding to twelve combustion assemblies), so that the precision of gas distribution debugging is low. Therefore, the first gas distribution channel 101A can serve as an adjustable gas distribution channel to split the first gas distribution channel 101A and the air inlet hole 102 thereof. Of course, the second gas distribution channel 101B and the air inlet hole 102 thereof may also be split. What needs illustration is that although the air inlet hole 102 of the adjustable gas distribution channel is divided into a plurality of (that is, at least two) sub-air inlet holes 1021, the opening and closing of the sub-air inlet holes 1021 are simultaneously controlled by one of the switch valves 21 of the proportional valve 20, that is, the opening and closing of the sub-air inlet holes 1021 can be controlled simultaneously by the switch valve 21.

[0032] There are multiple splitting methods with respect to the adjustable gas distribution channel. For example, the first gas distribution channel 101A may be divided into two sub-gas distribution channels 1011. Correspondingly, the air inlet hole 102 of the first gas distribution channel 101A may be divided into two sub-air inlet holes 1021. Each sub-gas distribution channel 1011 is provided with six air outlet nozzles 103, that is, each sub-air inlet hole 1021 corresponds to six air outlet nozzles 103. Alternatively, one sub-gas distribution channel 1011 is provided with three air outlet nozzles 103, and the other sub-gas distribution channel 1011 is provided with nine air outlet nozzles 103, so one sub-air inlet hole 1021 corresponds to three air outlet nozzles 103, and the other sub-air inlet hole 1021 corresponds to nine air outlet nozzles 103. Alternatively, one sub-gas distribution channel 1011 is provided with two air outlet nozzles 103, and the other sub-gas distribution channel 1011 is provided with ten air outlet nozzles 103, so one sub-air inlet hole 1021 corresponds to two air outlet nozzles 103, and the other sub-air inlet hole 1021 corresponds to ten air outlet nozzles 103. Alternatively, the first gas distribution channel 101A may also be divided into a larger number of sub-gas distribution channels 1011. For example, the first gas distribution channel 101A may be divided into four sub-gas distribution channels 1011. Accordingly, the air inlet hole 102 of the first gas distribution channel 101A is divided into four sub-air inlet holes 1021, and each sub-gas distribution channel 1011 is provided with three air outlet nozzles 103, that is, each sub-air inlet hole 1021 corresponds to three air outlet nozzles 103. The above splitting methods are merely examples, and in practical applications, other splitting methods may be adopted according to specific circumstances, and are not specifically limited herein. For example, the finest splitting method is that one sub-gas distribution channel 1011 corresponds to one air outlet nozzle 103. Alternatively, the first gas distribution channel 101A can also be divided into one sub-gas distribution channel 1011 corresponding to two or more air outlet nozzles 103. In addition, the number of the air outlet nozzles 103 of the adjustable channel (i.e., the number of corresponding combustion assemblies) may be 18, 19, 20, 21, etc.

[0033] In addition, the shape of the sub-air inlet hole 1021 may be a circular hole, a square hole, a triangular hole, or other special-shaped hole, or the like. The shapes and sizes of the sub-air inlet holes 1021 split from the same air inlet hole 102 may be the same or different. One large air inlet hole 102 is split into a plurality of sub-air inlet holes 1021 of controllable size, so that the debugging of a plurality of combustion assemblies corresponding to a plurality of air outlet nozzles 103 of the original adjustable gas distribution channel is changed into the debugging of the combustion assemblies corresponding to the air outlet nozzles 103 of each sub-gas distribution channel 1011, so that the gas distribution debugging of the combustion assemblies can be made more detailed. For example, the first gas distribution channel 101A may be divided into two sub-gas distribution channels 1011. Accordingly, the air inlet hole 102 of the first gas distribution channel 101A is divided into two sub-gas inlet holes 1021, and each sub-gas distribution channel 1011 is provided with six air outlet nozzles 103, that is, each sub-air inlet hole 1021 corresponds to six air outlet nozzles 103 (i.e., corresponding to six combustion assemblies). Thus, the original gas distribution debugging of twelve combustion assemblies is changed into gas distribution debugging in two groups. Each group corresponds to the debugging of six combustion assemblies, so that the precision of gas distribution debugging of the combustion assemblies is improved, and the debugging difficulty is reduced.

[0034] The gas distribution part 10 in the technical scheme of the present disclosure comprises at least two gas distribution channels 101 separated from each other. The air inlet hole 102 of each gas distribution channel 101 is arranged correspondingly to one of switch valves 21 of the proportional valve 20. The opening and closing of the air inlet hole 102 can be controlled by the corresponding switch valve 21. Moreover, at least one gas distribution channel 101 of the gas distribution part 10 serves as an adjustable gas distribution channel, and flow channel splitting design is performed on the adjustable gas distribution channel, the adjustable gas distribution channel is further split into two or more sub-gas distribution channels 1011. At the same time, the air inlet hole 102 of the adjustable gas distribution channel is further divided into two or more sub-air inlet holes 1021 without changing the size of the air inlet hole 102 of the gas distribution channel, so that each sub-air inlet hole 1021 corresponds to one sub-gas distribution channel 1011, and each sub-gas distribution channel 1011 is provided with at least one air outlet nozzle 103. In this way, the original situation that the single air inlet hole 102 simultaneously controls a plurality of air outlet nozzles 103 of the adjustable gas distribution channel can be optimized to the situation that a single sub-air inlet hole 1021 simultaneously controls the air outlet nozzle 103 of the single sub-gas distribution channel 1011. Obviously, the number of the air outlet nozzles 103 of the single sub-gas distribution channel 1011 is smaller than the original total number of the air outlet nozzles 103 of the adjustable gas distribution channel. Thus, the precision of gas distribution debugging can be improved, the difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies is reduced, and the air-fuel ratio is consistent during synchronous combustion of multiple combustion assemblies.

[0035] Optimal design is performed on the structure of the gas distribution part 10, the gas distribution among the multiple combustion assemblies can be more refined, and the precision of the flame uniformity debugging can be improved to a higher level, so that the flame uniformity debugging problem during synchronous combustion of multiple combustion assemblies is solved. In this way, it is also convenient to use the scheme of increasing the number of combustion assemblies to increase the load of the whole machine, so that the cost of the machine is reduced, and standardization is realized. The air-fuel ratio of each combustion assembly can also be more accurately controlled, flue gas emissions are debugged preferably, and the development cycle is shortened.

[0036] As shown in FIG. 4 and FIG. 5, in some embodiments, at least two gas distribution channels 101 comprise a first gas distribution channel 101A and a second gas distribution channel 101B, the number of the air outlet nozzles 103 of the first gas distribution channel 101A is larger than that of the air outlet nozzles 103 of the second gas distribution channel 101B, and the first gas distribution channel 101A is an adjustable gas distribution channel.

[0037] In the present embodiment, for example, as shown in FIG. 5, the first gas distribution channel 101A is provided with twelve air outlet nozzles 103 (corresponding to twelve combustion assemblies). The second gas distribution channel 101B is provided with six air outlet nozzles 103 (corresponding to six combustion assemblies). 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 hole 102 of the first gas distribution channel 101A is split into two sub-air inlet holes 1021 of controllable size. Each sub-air inlet hole 1021 corresponds to one sub-gas distribution channel 1011. Each sub-gas distribution channel 1011 is provided with six air outlet nozzles 103. The number of the air outlet nozzles 103 of the first gas distribution channel 101A is larger than that of the air outlet nozzles 103 of the second gas distribution channel 101B, so that the gas distribution debugging of a plurality of combustion assemblies corresponding to a plurality of air outlet nozzles 103 of the first gas distribution channel 101A is relatively difficult. Therefore, the first gas distribution channel 101A can serve as an adjustable gas distribution channel, and the first gas distribution channel 101A and the air inlet hole 102 thereof are split, so that the precision of gas distribution debugging is improved, the difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies is reduced, and the air-fuel ratio is consistent during synchronous combustion of multiple combustion assemblies.

[0038] Of course, in some embodiment, the first gas distribution channel 101A and the second gas distribution channel 101B are both adjustable gas distribution channels. Thus, the precision of gas distribution debugging of the first gas distribution channel 101A and the second gas distribution channel 101B is improved, so that the difficulty in debugging flame uniformity during synchronous combustion of multiple combustion assemblies is reduced, and the air-fuel ratio is consistent during synchronous combustion of multiple combustion assemblies.

[0039] A plurality of air outlet nozzles 103 of the adjustable gas distribution channel are split in a variety of ways. For example, as shown in FIG. 4 and FIG. 5, in some embodiments, the sub-gas distribution channels 1011 of the adjustable gas distribution channel are provided with the same amount of air outlet nozzles 103. That is, the number of the air outlet nozzles 103 of the adjustable gas distribution channel is equally divided according to the number of the split sub-gas distribution channels 1011. For example, as shown in FIG. 5, the number of the air outlet nozzles 103 of the adjustable gas distribution channel is twelve. The air outlet nozzles 103 are divided into two groups, comprising six air outlet nozzles in one group. Correspondingly, the adjustable gas distribution channel is split into two sub-gas distribution channels 1011, and each sub-gas distribution channel 1011 is provided with six air outlet nozzles 103.

[0040] Of course, in some embodiment, at least two sub-gas distribution channels 1011 of the adjustable gas distribution channel are provided with different numbers of air outlet nozzles 103. Taking the adjustable gas distribution channel with twelve air outlet nozzles 103 split into two sub-gas distribution channels 1011, one sub-gas distribution channel 101 is provided with three air outlet nozzles 103, and the other sub-gas distribution channel 101 is provided with nine air outlet nozzles 103.

[0041] When a plurality of air outlet nozzles 103 of the gas distribution channel 101 are provided, a plurality of air outlet nozzles 103 may be arranged in a single row, two rows, three rows, or more. A single row of air outlet nozzles 103 may be suitable for atmospheric combustion, and two or more rows of air outlet nozzles 103 may be suitable for dense-lean combustion.

[0042] In one embodiment, at least part of the air outlet nozzles 103 of the gas distribution channel 101 are arranged in at least two rows in the flow direction of airflow. The flow direction of airflow can be understood as the direction in which the airflow flows from the air inlet hole 102 to the air outlet nozzle 103. For example, as shown in FIG. 5, in one embodiment, the air inlet hole 102 is formed in the bottom of the gas distribution part 10, and the plurality of air outlet nozzles 103 are located at the top of the gas distribution part 10. At this time, the airflow direction is the height direction of the gas distribution part 10. Each gas distribution channel 101 is provided with a plurality of air outlet nozzles 103, and the plurality of air outlet nozzles 103 of each gas distribution channel 101 are arranged in two rows along the height direction of the gas distribution part 10.

[0043] In one embodiment, at least one sub-air inlet hole of the adjustable gas distribution channel is arranged in the shape of a circular hole 1021. The circular hole structure is more convenient to modify the size during gas debugging. For example, one of the sub-air inlet holes 1021 may be a circular hole, and the other sub-air inlet holes 1021 may be non-circular holes. Alternatively, all of the sub-air inlet holes 1021 may be provided as circular holes.

[0044] As shown in FIG. 6, in one embodiment, the hole wall of the air inlet hole 102 of the adjustable gas distribution channel is arranged in the shape of a conical surface. The air inlet hole 102 is provided with a narrow end and a flared end which are opposite along the axial direction. The flared end is constructed into a plurality of sub-air inlets separated from one another. Each sub-air inlet communicates with the narrow end to form one sub-air inlet hole 1021. The switch valve 21 is used for opening or closing the narrow end.

[0045] In the present embodiment, under the situation that the size of the air inlet hole 102 is limited, the draft slope can be made for the air inlet hole 102, and then the air inlet hole 102 can be split, so that the air inlet hole 102 is generally provided as a tapered hole, and the flared end has more space for channel splitting. The opening and closing of the plurality of sub-air inlet holes 1021 can be easily controlled simultaneously by opening or closing the narrow end of the air inlet hole 102 by the switch valve 21.

[0046] As shown in FIG. 4 and FIG. 5, in some embodiments, each gas distribution channel 101 comprises a first channel section extending along the height direction of the gas distribution part 10 and a second channel section extending along the length direction of the gas distribution part 10. The second channel section is located above the first channel section and communicates with the first channel section. The air inlet hole 102 is formed in the bottom of the first channel section. A side wall of the second channel section is provided with a plurality of air outlet nozzles 103 at intervals along the length direction of the second channel section.

[0047] In the present embodiment, in the length direction of the gas distribution part 10, the size of the first channel section is narrower than that of the second channel section. When the air inlet hole 102 of the corresponding gas distribution channel 101 is opened, after the gas enters the first channel section from the air inlet hole 102, the gas can flow upward to the second channel section under the guidance of the first channel section, and then diffuses to each air outlet nozzle 103 in the second channel section along the length direction of the second channel section, so that the gas distribution amount of each air outlet nozzle 103 is uniform.

[0048] On the basis of the above-mentioned embodiments, as shown in FIG. 3, in one embodiment, the gas distribution part 10 comprises a distribution part body 11, a pressing plate 12 and a sealing gasket 13. A cavity with an open end is formed in the distribution part body 11. The open end of the cavity is covered with the pressing plate 12. The pressing plate 12 and the distribution part body 11 are enclosed to form the gas distribution channel 101. The sealing gasket 13 is arranged between the distribution part body 11 and the pressing plate 12.

[0049] In the present embodiment, a cavity with an open end is formed in the distribution part body 11. The cavity is internally provided with a plurality of separation ribs to partition the cavity into a plurality of gas distribution channels 101. A cavity wall, away from the open end, of the cavity is provided with an air inlet hole 102 and a plurality of air outlet nozzles 103. The open end of the cavity is covered with the pressing plate 12, and the pressing plate 12 is connected and fixed with the distribution part body 11 through fasteners (such as screws and bolts). Moreover, a sealing gasket 13 is arranged between the distribution part body 11 and the pressing plate 12, which can ensure the sealing reliability between the distribution part body 11 and the pressing plate 12 to avoid gas leakage.

[0050] As shown in FIG. 1, the present disclosure also provides a gas distribution device 100 comprising a gas distribution part 10 and a proportional valve 20 connected with the gas distribution part 10. The proportional valve 20 is provided with at least two switch valves 21. The switch valve 21 and the air inlet hole 102 of the gas distribution part 10 are arranged one to one. The switch valve 21 is used for controlling the opening or closing of the corresponding air inlet hole 102. The specific structure of the gas distribution part 10 refers to the above-mentioned embodiments. Since the gas distribution device 100 adopts all the technical solutions of all the above-mentioned embodiments, the gas distribution device 100 has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be repeatedly described here.

[0051] The present disclosure also provides gas equipment. The gas equipment comprises a gas distribution device 100. The specific structure of the gas distribution device 100 refers to the above-mentioned embodiments. Since the gas equipment adopts all the technical solutions of all the above-mentioned embodiments, the gas equipment has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be repeated herein. The gas equipment comprises but is not limited to a gas water heater, a wall-hanging stove, etc. Wherein, the gas water heater comprises but is not limited to forced exhaust type, strong pumping type, natural supply and discharge type, outdoor type gas water heaters and other types of gas water heater that need gas distribution.

[0052] The above descriptions are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the specification and the drawings of the present application under the application idea of the present application, directly or indirectly applied to other related technical fields, shall all be comprised in the scope of patent protection of the present application.

Claims

1. A gas distribution part, used for being matched with a proportional valve of a gas distribution device, wherein the gas distribution part comprises at least two gas distribution channels separated from each other, each of the gas distribution channel being provided with an air inlet hole and a plurality of air outlet nozzles communicating with the air inlet hole, and an opening and closing of each of the air inlet hole being controlled by one of a plurality of switch valves of the proportional valve; at least one of the gas distribution channel is an adjustable gas distribution channel that comprises at least two sub-gas distribution channels separated from each other, each of the sub-gas distribution channel being provided with at least one of the air outlet nozzle, wherein the air inlet hole of the adjustable gas distribution channel comprises at least two sub-air inlet holes separated from each other, the sub-air inlet hole and the sub-gas distribution channel being arranged in one-to-one correspondence, and each of the sub-air inlet hole communicating with the air outlet nozzle of the corresponding sub-gas distribution channel.

2. The gas distribution part according to claim 1, wherein at least two of the gas distribution channels comprise a first gas distribution channel and a second gas distribution channel, a number of the air outlet nozzles of the first gas distribution channel being larger than that of the air outlet nozzles of the second gas distribution channel, and the first gas distribution channel being the adjustable gas distribution channel.

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

4. The gas distribution part according to any one of claims 1 to 3, wherein the sub-gas distribution channels of the adjustable gas distribution channel are provided with a same number of the air outlet nozzles; or, at least two of the sub-gas distribution channels of the adjustable gas distribution channel are provided with 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 channel are arranged in at least two rows in a gas 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 in a shape of a circular hole.

7. The gas distribution part according to any one of claims 1 to 6, wherein a hole wall of the air inlet hole of the adjustable gas distribution channel is arranged in a shape of a conical surface, the air inlet hole being provided with a narrow end and a flared end which are opposite to each other along an axial direction, the flared end being constructed into a plurality of sub-air inlets separated from one another, each of the sub-air inlet communicating with the narrow end to form one of the sub-air inlet holes, and the switch valve being used for opening or closing the narrow end.

8. The gas distribution part according to any one of claims 1 to 7, wherein each of the gas distribution channel comprises a first channel section extending along a height direction of the gas distribution part and a second channel section extending along a length direction of the gas distribution part, the second channel section being located above the first channel section and communicating with the first channel section, the air inlet hole being formed at a the bottom of the first channel section, and a side wall of the second channel section being provided with the plurality of air outlet nozzles at an interval along a length direction of the second channel section.

9. The gas distribution part according to any one of claims 1 to 8, wherein the gas distribution part comprises a distribution part body, a pressing plate and a sealing gasket, a cavity with an open end being formed in the distribution part body, the open end of the cavity being covered by the pressing plate, the pressing plate and the distribution part body being enclosed to form the gas distribution channel, and the sealing gasket being arranged between the distribution part body and the pressing plate.

10. A gas distribution device, comprising: a gas distribution part according to any one of claims 1 to 9; and a proportional valve, connected with the gas distribution part, wherein the proportional valve is provided with at least two switch valves, the switch valves and air inlet holes of the gas distribution part being arranged in one-to-one correspondence, and the switch valve being used for controlling the opening or closing of the corresponding air inlet hole.

11. A gas equipment, wherein the gas equipment comprises a gas distribution device according to claim 10.

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