A gas distribution pipe

Abstract

This invention belongs to the technical field of gas water heaters, specifically relating to a gas distribution pipe. The gas distribution pipe includes a pipe body and multiple air inlet channels integrally formed with the pipe body. These air inlet channels are parallel to each other and not interconnected. Multiple nozzle mounting holes are formed on the pipe body, arranged in multiple rows and connected to the air inlet channels. At least one air inlet channel connects to one nozzle mounting hole, and at least one air inlet channel connects to two nozzle mounting holes. The nozzle mounting holes on the pipe can be individually controlled, allowing for gas supply and combustion through a single nozzle mounting hole, resulting in a lower minimum heat load and preventing overheating issues in summer or when water flow is low. It can also control the opening of air inlet channels connecting two nozzle mounting holes, enabling gas supply and combustion through multiple flow gradients.

Description

Technical Field

[0001] This invention belongs to the field of gas water heater technology, specifically relating to a gas distribution pipe. Background Technology

[0002] CN221258844U discloses a gas distribution rod and a gas burner. The gas distribution rod includes a rod body with a gas passage inside. Several gas outlets are spaced along the axis of the gas passage on the rod body, and the gas outlets are connected to the gas passage. A first connecting member and a second connecting member are detachably connected to both ends of the rod body. An air inlet communicating with the gas passage is provided on the rod body, and an air inlet assembly is detachably connected to the air inlet. Both ends of the rod body are typically open, therefore, each opening at both ends of the rod body is provided with a tail plug for sealing the gas passage inside the rod body. The tail plug seals the openings at both ends of the rod body through an interference fit. Each gas outlet is provided with a nozzle, which is made of copper and is inserted into the gas outlet of the rod body by automated equipment. The number of nozzles includes, but is not limited to, the following: eighteen equally spaced nozzles; twenty-two equally spaced nozzles; and thirty-two equally spaced nozzles.

[0003] The use of a single-row nozzle layout in the same direction increases the size of the gas distribution pipe or increases the internal cavity of the gas distribution pipe, thus increasing the manufacturing difficulty; the nozzles on the rod form multiple flow gradients; secondly, for example, if the above eighteen nozzles are opened or closed at the same time, it is impossible to arrange and combine them to form multiple gas supply flow rates, and the minimum heat load is relatively large. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a gas distribution pipe, which includes a distribution pipe body and multiple air intake channels integrally formed with the distribution pipe body. The multiple air intake channels are parallel to each other and do not communicate with each other. The distribution pipe body has multiple nozzle mounting holes, which are distributed in multiple rows on the distribution pipe body and communicate with the air intake channels. At least one of the multiple air intake channels communicates with two nozzle mounting holes.

[0005] Preferably, at least one of the plurality of air intake channels is connected to one nozzle mounting hole, and at least one air intake channel is connected to two nozzle mounting holes. The air intake channels include a first air intake channel, a second air intake channel, a third air intake channel, and a fourth air intake channel that are parallel to each other and not connected to each other. The first air intake channel is connected to two nozzle mounting holes, the second air intake channel is connected to a plurality of nozzle mounting holes, and the third air intake channel and the fourth air intake channel are each connected to one nozzle mounting hole. The nozzle mounting holes are arranged in two rows.

[0006] Preferably, the gas distribution pipe body is provided with a first gas passage and a second gas passage extending along its length direction. The first gas passage and the second gas passage are located at both ends of the gas distribution pipe body and are separated by a partition. The first gas passage, the second gas passage, the gas distribution pipe body and the partition are integrally formed. The first air intake passage is connected to the nozzle mounting hole through the first gas passage. The second air intake passage is connected to the nozzle mounting hole through the second gas passage. The nozzle mounting holes of the third air intake passage and the fourth air intake passage are respectively located on both sides of the partition in the lateral direction, and the two nozzle mounting holes are not connected to each other.

[0007] Preferably, the outer ends of the first and second air intake channels respectively penetrate through the air distribution pipe body to form ports, and the ports are fixedly covered by the first and second tail plugs.

[0008] Preferably, the gas distribution pipe body is further provided with a connecting plate corresponding to the partition plate. The gas distribution pipe body and the connecting plate are integrally formed. The first air intake channel, the second air intake channel, the third air intake channel and the fourth air intake channel all penetrate the connecting plate. The external interfaces of the four channels are located on the connecting plate, and the inlets of the four channels extend into the interior of the gas distribution pipe body and communicate with the nozzle mounting holes. The third air intake channel and the fourth air intake channel are located in the middle of the connecting plate and correspond to the connecting plate. The nozzle mounting holes of the two channels are located on the corresponding sides of the partition plate. The first air intake channel and the second air intake channel are located at both ends of the length direction of the connecting plate, and they are also provided corresponding to the first gas channel and the second gas channel.

[0009] Preferably, the two rows of nozzle mounting holes are arranged at equal intervals along the length and are located on the corresponding sides in the width direction of the air distribution pipe body. The air intake channel is perpendicular to the plane where the nozzle mounting holes are located. The first air intake channel is connected to two nozzle mounting holes and is distributed on the two rows of nozzle mounting holes respectively. The nozzle mounting holes of the third air intake channel and the fourth air intake channel are in the same length direction and are distributed on the two rows of nozzle mounting holes respectively. The second air intake channel is connected to more than four nozzle mounting holes and is distributed in two rows.

[0010] Preferably, the acute angle formed by the air intake channel and the length direction of the air distribution pipe body is α, where 50°≤α≤80°.

[0011] Preferably, the air intake channel includes a first air intake channel, a second air intake channel, and a third air intake channel that are parallel to each other and not interconnected; the first air intake channel connects two nozzle mounting holes, the second air intake channel connects multiple nozzle mounting holes, and the third air intake channel has two nozzle mounting holes; the nozzle mounting holes are distributed in two rows.

[0012] Preferably, the first air intake channel, the third air intake channel, and the second air intake channel are on the same plane and are spaced apart from top to bottom, and the two nozzle mounting holes on the third air intake channel are connected through the third gas channel.

[0013] Preferably, the two nozzle mounting holes of the first air intake channel are respectively arranged in two rows and are symmetrically arranged; the two nozzle mounting holes of the third air intake channel are respectively arranged in two rows and are symmetrically arranged; the multiple nozzle mounting holes on the third air intake channel are respectively arranged in two rows and are symmetrically arranged. Attached Figure Description

[0014] The above and other objects, features, and advantages of the invention will become clearer through a more detailed description of the preferred embodiments illustrated in the accompanying drawings. The same reference numerals denote the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.

[0015] Figure 1 A schematic diagram of the gas distribution pipe provided in the embodiment;

[0016] Figure 2 for Figure 1 AA section view in the middle;

[0017] Figure 3 for Figure 1 BB section view in the middle;

[0018] Figure 4 for Figure 2 CC section view in the image.

[0019] Figure 5 The schematic diagram of another gas distribution pipe provided for the embodiment differs from the previous embodiment in that it is provided with three air intake channels;

[0020] Figure 6 for Figure 5 Top view;

[0021] Figure 7 for Figure 6 DD section view.

[0022] The attached diagrams are labeled as follows: First intake channel a1, first gas channel a2, first tail plug a4, second intake channel b1, second gas channel b2, second tail plug b4, third intake channel c1, third gas channel c2, fourth intake channel d1, fourth nozzle mounting hole d3, gas distribution pipe body 10, connecting plate 11, and partition plate 12.

[0023] a31 and a32 are the first nozzle mounting holes.

[0024] b31, b32, b33, b34, b35, and b36 are the mounting holes for the second nozzle.

[0025] c3, c31, and c32 are the mounting holes for the third nozzle. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please refer to Figures 1 to 4 The present invention provides a gas distribution pipe, which includes a distribution pipe body 10 and a plurality of air intake channels integrally formed with the distribution pipe body 10. The plurality of air intake channels are parallel to each other and are not interconnected. The distribution pipe body 10 has a plurality of nozzle mounting holes, which are distributed in multiple rows on the distribution pipe body 10 and are connected to the air intake channels. At least one air intake channel is connected to one nozzle mounting hole, and at least one air intake channel is connected to two nozzle mounting holes.

[0030] The nozzle mounting holes on the gas distribution pipe can be controlled individually, allowing for gas supply and combustion through a single nozzle mounting hole. This results in a lower minimum heat load and avoids overheating issues in the water heater during summer or when water flow is low. Secondly, it can also control the opening of the air intake channel connecting two nozzle mounting holes, allowing for gas supply and combustion through both nozzle mounting holes. Alternatively, it can simultaneously open two air intake channels connecting one and two nozzle mounting holes, allowing for gas supply and combustion through three nozzle mounting holes. Of course, if there are multiple air intake channels, other air intake channels and their connected nozzle mounting holes can be controlled to allow a single gas distribution pipe to supply gas at multiple flow gradients, adapting to different needs.

[0031] In a preferred embodiment, the air intake channels include a first air intake channel a1, a second air intake channel b1, a third air intake channel c1, and a fourth air intake channel d1 that are parallel to each other and not interconnected. The first air intake channel a1 connects to two nozzle mounting holes, the second air intake channel b1 connects to multiple nozzle mounting holes, and the third air intake channel c1 and the fourth air intake channel d1 each connect to one nozzle mounting hole. The nozzle mounting holes are arranged in two rows.

[0032] By setting up the above four air intake channels and matching the corresponding nozzle mounting holes, a relatively rich gas combustion flow gradient can be obtained without increasing the molding difficulty, making the product more widely applicable and better matching the current combustion mode, so as to achieve better energy saving effect.

[0033] In a preferred embodiment, the gas distribution pipe body 10 is provided with a first gas passage a2 and a second gas passage b2 extending along its length direction. The first gas passage a2 and the second gas passage b2 are located at both ends of the gas distribution pipe body 10 and are separated by a partition 12. The first gas passage a2, the second gas passage b2, the gas distribution pipe body 10 and the partition 12 are integrally formed. The first air intake passage a1 is connected to the nozzle mounting hole through the first gas passage a2, and the second air intake passage b1 is connected to the nozzle mounting hole through the second gas passage b2. The nozzle mounting holes of the third air intake passage c1 and the fourth air intake passage d1 are respectively located on both sides of the partition 12 in the lateral direction, and these two nozzle mounting holes are not connected to each other.

[0034] The first gas passage a2, the second gas passage b2, and the partition 12 in the middle of them are easier to form and demold. For example, in the forming method, the two mold cores used to form the first gas passage a2 and the second gas passage b2 only need to be spaced a certain distance apart to form the partition 12. The two mold cores can be demolded at both ends of the length direction of the gas distribution pipe body 10 to form the first gas passage a2, the second gas passage b2, and a partition 12.

[0035] In a preferred embodiment, the outer ends of the first air intake channel a1 and the second air intake channel b1 respectively penetrate through the air distribution pipe body 10 to form ports, and the ports are fixedly covered by the first tail plug a4 and the second tail plug b4.

[0036] The port configuration facilitates demolding and forming. The first air intake channel a1 and the second air intake channel b1 are kept sealed by the first tail plug a4 and the second tail plug b4 to facilitate sealing during use.

[0037] In a preferred embodiment, a connecting plate 11 is also provided at the location of the gas distribution pipe body 10 corresponding to the partition plate 12. The gas distribution pipe body 10 and the connecting plate 11 are integrally formed. The first air intake channel a1, the second air intake channel b1, the third air intake channel c1 and the fourth air intake channel d1 all penetrate the connecting plate 11. The external interfaces of the four are located at the connecting plate 11, and the inlets of the four extend into the interior of the gas distribution pipe body 10 and communicate with the nozzle mounting holes. The third air intake channel c1 and the fourth air intake channel are located in the middle of the connecting plate 11 and correspond to the connecting plate 11. The nozzle mounting holes of the two are located on the corresponding sides of the partition plate 12. The first air intake channel a1 and the second air intake channel b1 are located at the two ends of the length direction of the connecting plate 11, and they are also provided corresponding to the first gas channel a2 and the second gas channel b2.

[0038] Please refer to Figure 4 The first air intake channel a1, the first gas inlet, and the nozzle mounting hole connected to them are located at one end of the upper and lower ends of the gas distribution pipe body 10; the second air intake channel b1, the second gas inlet, and the nozzle mounting hole connected to them are located at the other end of the upper and lower ends of the gas distribution pipe body 10. The third air intake channel c1 and the nozzle mounting hole connected to it are located at one end of the left and right ends of the connecting plate 11; the fourth air intake channel d1 and the nozzle mounting hole connected to it are located at the other end of the left and right ends of the connecting plate 11. This arrangement ensures that the four air intake channels can be directly connected to the nozzle mounting holes or gas channels. The connecting plate 11 connects to other components of the gas stove for installation and gas path connection, and the external interface is used to receive gas input. The connection plate 11, with the four air intake channels on the same plate, facilitates installation and forming. The figure shows four connecting holes on the connecting plate 11 for connection and fixation. The gas pipe body, connecting plate 11, and four air intake channels are integrally formed, simplifying the forming process and allowing the gas distribution pipe to be manufactured in one step.

[0039] In a preferred embodiment, two rows of nozzle mounting holes are arranged at equal intervals along the length and are located on opposite sides of the width direction of the air distribution pipe body 10. The air intake channel is perpendicular to the plane where the nozzle mounting holes are located. The first air intake channel a1 connects to two nozzle mounting holes and is distributed on the two rows of nozzle mounting holes respectively. The nozzle mounting holes of the third air intake channel c1 and the fourth air intake channel d1 are in the same length direction and are distributed on the two rows of nozzle mounting holes respectively. The second air intake channel b1 connects to four or more nozzle mounting holes and is distributed in two rows.

[0040] The first intake channel a1 connects to two nozzle mounting holes as the first nozzle mounting holes (a31, a32), the second intake channel b1 connects to six nozzle mounting holes as the second nozzle mounting holes (b31, b32, b33, b34, b35, b36), and the nozzle mounting holes of the third intake channel c1 and the fourth intake channel d1 are distributed as the third nozzle mounting hole c3 and the fourth nozzle mounting hole d3.

[0041] In a preferred embodiment, the acute angle formed by the air intake channel and the length direction of the air distribution pipe body 10 is α, where 50°≤α≤80°. This arrangement facilitates demolding.

[0042] Please refer to Figures 5 to 7 Another gas distribution pipe structure provided in the embodiment differs from the previous embodiment in that it has three air intake channels.

[0043] In a preferred embodiment, the air intake channels include a first air intake channel a1, a second air intake channel b1, and a third air intake channel c1 that are parallel to each other and not interconnected. The first air intake channel a1 connects to two nozzle mounting holes, i.e., connects to two first nozzle mounting holes (a31, a32). The second air intake channel b1 connects to multiple nozzle mounting holes. The third air intake channel c1 connects to two nozzle mounting holes, i.e., connects to two third nozzle mounting holes (c31, c32). All nozzle mounting holes are arranged in two rows. In use, the gas flow of the nozzles corresponding to two or four nozzle mounting holes can be controlled. The number of nozzles plus the number of nozzles installed on the second air intake channel b1, or the total number of nozzles, forms four flow gradients.

[0044] In a preferred embodiment, the first air intake channel a1, the third air intake channel c1, and the second air intake channel b1 are coplanar and spaced apart from top to bottom. The two nozzle mounting holes on the third air intake channel c1 are connected through the third gas channel c2. This arrangement facilitates the forming of the air intake channels and makes the forming and demolding of the two nozzle mounting holes on the third air intake channel c1 more convenient.

[0045] In a preferred embodiment, the two nozzle mounting holes of the first air intake channel a1 are respectively arranged in two rows and symmetrically; the two nozzle mounting holes of the third air intake channel c1 are respectively arranged in two rows and symmetrically; and the multiple nozzle mounting holes on the third air intake channel c1 are respectively arranged in two rows and symmetrically. This further reduces the molding difficulty and also facilitates use and installation.

[0046] In this invention, the nozzle mounting holes on the gas distribution pipe are arranged opposite each other, adopting a double-row nozzle layout. The first air intake channel a1 is directly connected to the first nozzle mounting holes (a31, a32), controlling the gas flow at the nozzles mounted in the first nozzle mounting holes (a31, a32). The second air intake channel b1 is directly connected to the second nozzle mounting holes (b31, b32, b33, b34, b35, b36), controlling the gas flow at the nozzles mounted in the second nozzle mounting holes (b31, b32, b33, b34, b35, b36). The third intake channel c1 is directly connected to the third nozzle mounting hole c3, controlling the gas flow of the nozzle at the third nozzle mounting hole c3; the fourth intake channel d1 is directly connected to the fourth nozzle mounting hole d3, controlling the gas flow of the nozzle at the fourth nozzle mounting hole d3; by controlling the gas flow of the nozzles at the mounting holes through the above four first intake channels a1, multiple gas supply flows can be formed, such as one nozzle working, two nozzles working, three nozzles working, and four nozzles working, etc.

[0047] First tail plug a4 and second tail plug b4 are installed at the ports of the first gas passage a2 and the second gas passage b2, respectively. Partition plates 12 are distributed to isolate the first gas passage a2, the second gas passage b2, and the gas passage 2 from the atmosphere.

[0048] Generally, when the number and spacing of nozzles are the same, the length of the gas distribution pipe in a single-row nozzle structure is too long; the gas passage and sealing surface of a two-row nozzle structure on the same side are too numerous, increasing the risk of gas leakage. A single gas passage controls a large number of nozzles, making it impossible to achieve the working state of a single nozzle, resulting in a high minimum heat load and scalding water temperature in summer; existing gas distribution pipes have too many opening directions in the internal passages or require secondary machining, making the manufacturing process complex and the production cost high.

[0049] The present invention has at least the following advantages over the prior art:

[0050] The use of a single-row nozzle layout in the same direction increases the size of the gas distribution pipe or the internal cavity of the gas distribution pipe, increasing the manufacturing difficulty; the nozzles on the rod cannot be controlled individually; secondly, if the above eighteen nozzles are opened or closed at the same time, it is impossible to achieve gas supply and combustion by a single nozzle, resulting in a large minimum heat load, which can easily cause the water heater to overheat in summer or when the water volume is low; furthermore, it is also impossible to supply gas to a single gas distribution rod according to multiple flow gradients.

[0051] It can control the on / off of gas from a single nozzle to achieve half-flame combustion;

[0052] To ensure stable water temperature when the inlet water temperature is high or the water flow rate is low in summer, and when a low load is required;

[0053] Each gas inlet channel in the gas distribution pipe is independent and not interconnected, ensuring that pressure changes in each gas channel will not occur when the overall load is switched, thus ensuring combustion stability; each channel of the gas distribution pipe does not require further processing, reducing production costs.

[0054] The fewer internal channels of the gas splitter facilitate manufacturing and improve production efficiency.

[0055] Fewer sealing surfaces in the gas distribution pipe reduce the risk of gas leaks.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A gas distribution pipe, characterized in that, The gas distribution pipe includes a distribution pipe body and multiple air intake channels integrally formed with the distribution pipe body. The acute angle formed by the air intake channels and the length direction of the distribution pipe body is α, where 50°≤α≤80°. The multiple air intake channels are parallel to each other and do not communicate with each other. The distribution pipe body has multiple nozzle mounting holes, which are distributed in two rows on the distribution pipe body and communicate with the air intake channels. The air intake channel includes a first air intake channel, a second air intake channel, a third air intake channel and a fourth air intake channel that are parallel to each other and not connected to each other. The first air intake channel is connected to two nozzle mounting holes, the second air intake channel is connected to multiple nozzle mounting holes, and the third air intake channel and the fourth air intake channel are each connected to one nozzle mounting hole. The gas distribution pipe body is provided with a first gas passage and a second gas passage extending along its length direction. The first gas passage and the second gas passage are located at both ends of the gas distribution pipe body and are separated by a partition. The nozzle mounting holes of the third air intake passage and the fourth air intake passage are respectively located on both sides of the partition in the lateral direction, and the two nozzle mounting holes are not connected to each other. A connecting plate is also provided outside the gas distribution pipe body corresponding to the partition. The gas distribution pipe body and the connecting plate are integrally formed. The first, second, third, and fourth air intake channels all penetrate the connecting plate. The external interfaces of the four channels are located on the connecting plate, and the inlets of the four channels extend into the interior of the gas distribution pipe body and communicate with the nozzle mounting holes. The third and fourth air intake channels are located in the middle of the connecting plate and correspond to the partition. The nozzle mounting holes of the two channels are located on the corresponding sides of the partition. The first and second air intake channels are located at both ends of the length direction of the connecting plate, and they are also provided corresponding to the first and second gas passages.

2. The gas distribution pipe as described in claim 1, characterized in that, The first gas passage, the second gas passage, the gas distribution pipe body and the partition are integrally formed. The first gas intake passage is connected to the nozzle mounting hole through the first gas passage, and the second gas intake passage is connected to the nozzle mounting hole through the second gas passage.

3. The gas distribution pipe as described in claim 1, characterized in that, The two rows of nozzle mounting holes are arranged at equal intervals along the length and are located on the corresponding sides of the width direction of the air distribution pipe body. The air intake channel is perpendicular to the plane where the nozzle mounting holes are located. The first air intake channel is connected to two nozzle mounting holes and is distributed on the two rows of nozzle mounting holes respectively. The nozzle mounting holes of the third air intake channel and the fourth air intake channel are in the same length direction and are distributed on the two rows of nozzle mounting holes respectively. The second air intake channel is connected to at least four nozzle mounting holes and is distributed in two rows.

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