CN217816753U - Gas distributor and gas water heater - Google Patents

Abstract

The utility model belongs to hot water supply equipment discloses a gas distributor and gas heater. The gas distributor comprises an air injection pipe, an air inlet pipe, two connecting pipes, a gas distribution pipe and two valve components. The inner cavity of the gas injection pipe is axially divided into a first gas injection chamber, a second gas injection chamber and a third gas injection chamber, the length of the first gas injection chamber is smaller than that of the second gas injection chamber and that of the third gas injection chamber along the axial direction of the gas injection pipe, and the first gas injection chamber is positioned between the second gas injection chamber and the third gas injection chamber; the air inlet pipe communicates an air source with the first air injection chamber; one end of the first connecting pipe is communicated with the axial middle part of the second air injection chamber; one end of the second connecting pipe is communicated with the axial middle part of the third air injection chamber; the gas distribution pipe is axially parallel to the gas injection pipe, the middle part of the gas distribution pipe is communicated with the gas inlet pipe, one end of the gas distribution pipe is connected with the other end of the first connecting pipe through the first valve component, and the other end of the gas distribution pipe is connected with the other end of the second connecting pipe through the second valve component. The axial size of the gas distribution pipe is small.

Description

Gas distributor and gas water heater

Technical Field

The utility model relates to a hot water supply equipment especially relates to a gas distributor and gas heater.

Background

The gas water heater is a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. The gas distributor is a core component for automatically adjusting the combustion load in the gas water heater. Be provided with a plurality of cavitys among the gas distributor, during the combustion chamber was carried to the cavity to the gas stream flow through, through the change of the combination of switching on of each cavity in order to realize combustion load to guarantee that gas heater can accurate accuse temperature.

Fig. 1 is a schematic view of a gas distributor in the prior art, and the flow direction of the gas is indicated by arrows. Specifically, the gas distributor includes a gas injection pipe 1', a gas inlet pipe 2', a gas distribution pipe 3', and a connection pipe 4'. A plurality of air injection chambers are arranged in the air injection pipe 1' at intervals along the axial direction of the air injection pipe, and each air injection chamber is provided with an air injection hole (not shown in figure 1). The air inlet pipe 2 'is communicated with the axial middle part of one of the air injection chambers, namely, the air injection holes in the air injection chamber are normally open holes, and fuel gas in the air inlet pipe 2' always enters the air injection chamber and is sprayed out from the normally open holes. The axial middle of each of the other air injection chambers corresponds to a connecting pipe 4'. The gas distribution pipe 3 'is parallel to the gas injection pipe 1' and is communicated with the gas inlet pipe 2', and the gas distribution pipe 3' spans the plurality of connecting pipes 4 'and is connected with the plurality of connecting pipes 4'. A valve assembly (not shown in fig. 1) is disposed between each connecting tube 4' and the gas distributing tube 3', and the on/off of the corresponding connecting tube 4' is controlled by the valve assembly. When the valve component conducts the corresponding connecting pipe 4', part of the fuel gas in the air inlet pipe 2' enters the corresponding air injection cavity after passing through the air distribution pipe 3 'and the conducted connecting pipe 4', and is finally ejected out of the air injection holes.

Because the current one end that sets up to from jet-propelled pipe 1' to the other end more, the length of jet-propelled cavity increases in proper order (the quantity of the fumarole on every jet-propelled cavity also increases in proper order), and intake pipe 2' with be located jet-propelled pipe 1' one end and the shortest jet-propelled cavity intercommunication, the axial of gas-distributing pipe 3' then extends to be located jet-propelled pipe 1' other end and the connecting pipe 4' that the longest jet-propelled cavity corresponds by intake pipe 2', this makes gas-distributing pipe 3's axial dimensions great, and then make gas distributor and gas heater's volume great, and waste material. Taking fig. 1 as an example, the gas injection pipe 1 'is provided with three gas injection chambers with sequentially increasing lengths along the axial direction thereof at intervals, namely a first gas injection chamber 11', a second gas injection chamber 12 'and a third gas injection chamber 13'. If the axial length of the first jet chamber 11 'is a, the axial length of the second jet chamber 12' is b, and the axial length of the third jet chamber 13 'is c, the axial length of the gas-distributing pipe 3' is L1= (a/2) + b + (c/2).

SUMMERY OF THE UTILITY MODEL

One of the technical problems solved by the present invention is to provide a gas distributor, wherein the axial dimension of the gas distribution pipe is small, so that the occupied space of the gas distributor in the gas water heater is small, and the material is saved.

The second technical problem solved by the present invention is to provide a gas water heater, which has small overall size and saves materials.

The first technical problem is solved by the following technical scheme:

a gas dispenser, comprising:

the jet pipe is characterized in that the inner cavity of the jet pipe is axially divided into a plurality of jet chambers, each jet chamber is provided with a jet hole, the plurality of jet chambers comprise a first jet chamber, a second jet chamber and a third jet chamber, the length of the first jet chamber is smaller than that of the second jet chamber and that of the third jet chamber along the axial direction of the jet pipe, and the first jet chamber is positioned between the second jet chamber and the third jet chamber;

one end of the air inlet pipe is communicated with an air source, and the other end of the air inlet pipe is communicated with the first air injection chamber;

one end of the first connecting pipe is communicated with the axial middle part of the second air injection chamber, and the axial direction of the first connecting pipe is perpendicular to the axial direction of the second air injection chamber;

one end of the second connecting pipe is communicated with the axial middle part of the third air injection chamber, and the axial direction of the second connecting pipe is perpendicular to the axial direction of the third air injection chamber;

the gas distributing pipe, the axial of gas distributing pipe with the axial parallel of jet-propelled pipe, the middle part of gas distributing pipe with the intake pipe intercommunication, gas distributing pipe's one end through first valve module with the other end of first connecting pipe is connected, gas distributing pipe's the other end through second valve module with the other end of second connecting pipe is connected.

Gas distributor, compare with the background art, the beneficial effect who has is:

through setting up first jet-propelled chamber between second jet-propelled chamber and the jet-propelled chamber of third, set up the first jet-propelled chamber that the size is minimum in the non-tip of jet-propelled pipe promptly, set up the great jet-propelled chamber of second of size and the jet-propelled chamber of third in the tip of jet-propelled pipe, so for with the intake pipe intercommunication, and span the axial dimensions of the gas-distributing pipe of first connecting pipe and second connecting pipe reduce, thereby reduce the size of gas distributor, save material simultaneously. In addition, the normally open air inlet pipe is communicated with the middle part of the first air injection chamber, so that air inlet in the air inlet pipe is uniform; the normally open air inlet pipe is communicated with the middle of the gas distribution pipe, and fuel gas in the air inlet pipe can uniformly flow to two ends of the gas distribution pipe respectively.

In one embodiment, the length of the third jet chamber is greater than the length of the second jet chamber;

the air inlet pipe comprises a main air inlet pipe and a branch air inlet pipe, the axial direction of the main air inlet pipe is perpendicular to the axial direction of the air injection pipe, the main air inlet pipe is offset towards the third air injection cavity, the branch air inlet pipe and the main air inlet pipe form an included angle, one end of the branch air inlet pipe is communicated with the main air inlet pipe, the other end of the branch air inlet pipe is communicated with the first air injection cavity, and the branch air inlet pipe is communicated with the main air inlet pipe; the main air inlet pipe is provided with a flange used for being connected with a fuel gas proportional valve, and the flange is provided with an air inlet communicated with an inner cavity of the main air inlet pipe. Because the distance between the first air injection chamber and the second air injection chamber is smaller than the distance between the first air injection chamber and the third air injection chamber, the main air inlet pipe is biased towards the third air injection chamber, and the interference of the flange, the first connecting pipe and the first valve component can be prevented.

In one embodiment, the axial direction of the first gas injection chamber coincides with the axial direction of the secondary gas injection pipe. So, guarantee to enter into the flow and the velocity of flow of the gas in the first jet-propelled cavity by minute trachea, and then guarantee the jet-propelled volume of often opening a hole.

In one embodiment, the gas injection pipe comprises a pipe body and a partition part arranged inside the pipe body, the second gas injection chamber and the third gas injection chamber are respectively arranged on two sides of the partition part, the first gas injection chamber is arranged on the partition part, and the pipe body and the partition part are of an integrated structure formed by casting. Therefore, the pipe body and the partition part are of an integrated structure, the pipe body is divided into the second air injection chamber and the third air injection chamber which are located on two sides of the partition part through the partition part, and the second air injection chamber and the third air injection chamber are separated without additionally installing structures such as a blocking cover in the pipe body, so that the structure is simpler. The first air injection chamber is formed on the partition, so that the first air injection chamber, the second air injection chamber and the third air injection chamber are better in sealing performance.

In one embodiment, the number of the gas injection holes on the first gas injection chamber is less than the number of the gas injection holes on the second gas injection chamber, and the number of the gas injection holes on the second gas injection chamber is less than the number of the gas injection holes on the third gas injection chamber. Thus, the number of gas injection holes on each gas injection chamber is positively correlated with the length of each gas injection chamber. The longer the length of the gas injection chamber is, the larger the amount of gas that can be contained therein, the larger the number of gas injection holes thereon, and the larger the amount of gas ejected from the gas injection holes thereon.

In one embodiment, the first gas injection chamber has an inner diameter smaller than that of the second gas injection chamber, and the second gas injection chamber has an inner diameter smaller than that of the third gas injection chamber. Because the number of the gas injection holes on the first gas injection chamber is less than that of the gas injection holes on the second gas injection chamber, the inner diameter of the first gas injection chamber can be smaller, and thus, enough gas can be ensured to be injected from the gas injection holes on the first gas injection chamber. Similarly, the number of the gas injection holes on the second gas injection chamber is less than that of the gas injection holes on the third gas injection chamber, so that enough fuel gas can be ensured to be injected from the gas injection holes on the second gas injection chamber.

In one embodiment, the first valve assembly comprises a first valve seat and a first electromagnetic valve, the first valve seat is configured with a first valve seat gas collecting cavity and a first valve seat gas inlet and a first valve seat gas outlet which are communicated with the first valve seat gas collecting cavity, the first valve seat gas inlet is also communicated with the gas distribution pipe, and the first electromagnetic valve is used for connecting or disconnecting the first valve seat gas outlet with the first connecting pipe;

the second valve assembly comprises a second valve seat and a second electromagnetic valve, the second valve seat is provided with a second valve seat gas collecting cavity, a second valve seat gas inlet and a second valve seat gas outlet, the second valve seat gas inlet is communicated with the second valve seat gas collecting cavity, the second valve seat gas outlet is also communicated with the gas distribution pipe, and the second electromagnetic valve is used for enabling or cutting off the second valve seat gas outlet and the second connecting pipe. Therefore, the first valve component is used for controlling the connection or disconnection of the first connecting pipe and the gas distribution pipe, and the second valve component is used for controlling the connection or disconnection of the second connecting pipe and the gas distribution pipe. When the first valve component conducts the first connecting pipe and the gas distribution pipe, part of the fuel gas in the gas inlet pipe enters the second gas injection cavity after passing through the gas distribution pipe and the first connecting pipe, and is finally sprayed out from the gas injection holes in the second gas injection cavity. When the second valve assembly conducts the second connecting pipe and the gas distribution pipe, part of gas in the gas inlet pipe enters the third gas injection cavity after passing through the gas distribution pipe and the second connecting pipe, and is finally sprayed out through the gas injection holes in the third gas injection cavity.

In one embodiment, the gas injection pipe, the gas inlet pipe, the first connecting pipe, the second connecting pipe and the gas distribution pipe are cast and formed into a single structure. So, adopt casting integrated into one piece, overall structure intensity is high, need not the erection joint, and production efficiency is high.

In one embodiment, the gas distribution pipe is provided with a pressure measuring port, and a pressure measuring part for measuring the air pressure in the gas distribution pipe is arranged in the pressure measuring port. So, through the pressure in the pressure measurement spare real-time supervision minute trachea, guarantee when the connecting pipe that the valve module will correspond switches on, have in the minute trachea sufficient gas gets into the connecting pipe that switches on.

The second technical problem is solved by the following technical scheme:

a gas water heater comprising a gas distributor as described above.

Gas heater, compare with the background art, the beneficial effect who has is:

the gas water heater comprises the gas distributor, is small in overall size and saves materials.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic view of a prior art gas distributor;

fig. 2 is a schematic view of a gas distributor according to an embodiment of the present invention;

fig. 3 is an isometric view of another gas distributor provided by an embodiment of the present invention;

fig. 4 is a front view of another gas distributor provided in the embodiment of the present invention;

fig. 5 is a top view of another gas distributor provided in the embodiments of the present invention;

fig. 6 is a first cross-sectional view of another gas distributor provided in the embodiment of the present invention;

fig. 7 is a second cross-sectional view of another gas distributor provided in the embodiment of the present invention;

fig. 8 is a third cross-sectional view of another gas distributor provided in the embodiment of the present invention;

fig. 9 is a fourth cross-sectional view of another gas distributor provided by the embodiment of the present invention.

Reference numerals:

in fig. 1:

1', a gas injection pipe; 11', a first gas injection chamber; 12', a second gas injection chamber; 13', a third gas injection chamber;

2', an air inlet pipe; 3', a gas distribution pipe; 4', a connecting pipe;

in fig. 2-9:

1. a gas injection pipe; 11. a pipe body; 111. a third gas injection chamber; 112. a second gas injection chamber; 12. a partition portion; 121. a first gas injection chamber; 13. a gas injection hole;

2. an air inlet pipe; 21. a main intake pipe; 211. a communicating hole; 22. distributing the gas into a gas inlet pipe; 23. a flange; 231. an air inlet;

31. a second connecting pipe; 32. a first connecting pipe;

4. a gas distributing pipe; 41. a pressure measuring port;

5. a second valve assembly; 6. a first valve assembly;

51. a second valve seat; 511. a gas collecting cavity of the second valve seat; 512. a second valve seat air inlet; 513. the air outlet of the second valve seat;

61. a first valve seat; 611. a first valve seat gas collection cavity; 612. a first valve seat inlet; 613. a first valve seat air outlet;

7. and (7) blocking the cover.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "central," "inner," "outer," and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 2 to 7, the gas distributor provided in the present embodiment includes a gas injection pipe 1, a gas inlet pipe 2, a first connection pipe 32, a second connection pipe 31, a gas distribution pipe 4, a first valve assembly 6, and a second valve assembly 5. The inner cavity of the gas injection pipe 1 is axially divided into a plurality of gas injection chambers, and each gas injection chamber is provided with a gas injection hole 13. The plurality of gas injection chambers include a first gas injection chamber 121, a second gas injection chamber 112, and a third gas injection chamber 111, and along the axial direction of the gas injection pipe 1, the length of each of the first gas injection chambers 121 is smaller than the length of each of the second gas injection chamber 112 and the third gas injection chamber 111, and the first gas injection chamber 121 is located between the second gas injection chamber 112 and the third gas injection chamber 111. One end of the air inlet pipe 2 is used for being communicated with an air source, and the other end is communicated with the first air injection chamber 121. One end of the first connecting pipe 32 communicates with the axial middle portion of the second gas ejection chamber 112, and the axial direction of the first connecting pipe 32 is perpendicular to the axial direction of the second gas ejection chamber 112. One end of the second connection pipe 31 is communicated with the axial middle portion of the third gas injection chamber 111, and the axial direction of the second connection pipe 31 is perpendicular to the axial direction of the third gas injection chamber 111. The gas distributing pipe 4 is parallel to the gas spraying pipe 1. The middle part of gas-distributing pipe 4 communicates with intake pipe 2, and the one end of gas-distributing pipe 4 is connected with first connecting pipe 32 through first valve module 6, and the other end of gas-distributing pipe 4 is connected with second connecting pipe 31 through second valve module 5. The first valve assembly 5 is used for connecting or disconnecting the first connecting pipe 32 with the gas distribution pipe 4, and the second valve assembly 6 is used for connecting or disconnecting the second connecting pipe 31 with the gas distribution pipe 4.

The gas injection hole 13 on the first gas injection chamber 121 communicated with the gas inlet pipe 2 is a normally open hole, and the gas in the gas inlet pipe 2 always enters the first gas injection chamber 121 and is sprayed out from the normally open hole. The gas distribution pipe 4 communicates with the gas inlet pipe 2, while the gas distribution pipe 4 is connected with the first connection pipe 32 and the second connection pipe 31. Part of the fuel gas in the gas inlet pipe 2 enters the gas distribution pipe 4 and can flow to the first connecting pipe 32 and the second connecting pipe 31 from the gas distribution pipe 4; when the first valve assembly 6 conducts the first connecting pipe 32 and the gas distribution pipe 4, the gas in the gas distribution pipe 4 flows into the second gas injection chamber 112 through the first connecting pipe 32 and is injected out of the gas injection holes 13 on the second gas injection chamber 112; when the second valve assembly 5 connects the second connecting pipe 31 and the gas distribution pipe 4, the gas in the gas distribution pipe 4 enters the third gas injection chamber 111 through the second connecting pipe 31 and is ejected from the gas injection holes 13 on the third gas injection chamber 111. The change of the combustion load can be realized by switching on or switching off the second air injection chamber 112 and/or the third air injection chamber 111, so that the gas water heater can be ensured to accurately control the temperature.

Further, in this embodiment, the first air injection chamber 121 is located between the second air injection chamber 112 and the third air injection chamber 111, that is, the shortest first air injection chamber 121 is disposed at the non-end portion of the air injection pipe 1, the air inlet pipe 2 communicated with the first air injection chamber 121 is also located at the non-end portion of the air injection pipe 1, and the first connecting pipe 32 and the second connecting pipe 31 are respectively disposed at intervals at two sides of the air inlet pipe 2, so that the axial size of the air distribution pipe 4 communicated with the air inlet pipe 2 and crossing the first connecting pipe 32 and the second connecting pipe 31 can be reduced, thereby reducing the size of the gas distributor and the whole gas heater, and saving materials. Specifically, fig. 2 shows a gas distributor of the present embodiment, wherein the axial length of the first gas injection chamber 121 (corresponding to the first gas injection chamber 11' in the prior art) is set to be a, the axial length of the second gas injection chamber 112 (corresponding to the second gas injection chamber 12' in the prior art) is set to be b, and the axial length of the third gas injection chamber 111 (corresponding to the third gas injection chamber 13' in the prior art) is set to be c, so that the axial length of the gas distribution pipe 4 in the present embodiment is L2= (b/2) + a + (c/2). Since b is greater than a, the axial length L2 of the air distributing pipe 4 in the present embodiment is greater than the axial length L1 of the air distributing pipe 4 in the prior art (see background art and fig. 1).

In addition, in the embodiment, the normally open air inlet pipe 2 is communicated with the middle part of the first air injection chamber 121, so that air inlet in the air inlet pipe 2 is relatively uniform; the normally open air inlet pipe 2 is communicated with the middle part of the gas distribution pipe 4, and fuel gas in the air inlet pipe 2 can uniformly flow to two ends of the gas distribution pipe 4 respectively.

It should be noted that in the present embodiment, three air injection chambers are provided, and the sizes of the three air injection chambers are different; in other embodiments, four or more gas injection chambers may be provided as long as the first gas injection chamber 121 is of a minimum size and the first gas injection chamber 121 is located at the non-end of the gas lance 1.

It should also be noted that the gas distributor shown in fig. 3-9 differs from the gas distributor shown in fig. 2 in the structure of the inlet pipe 2 and the first air injection chamber 121, which are identical, see in particular the following analysis.

Optionally, with continuing reference to fig. 3, 5 to 7, the air inlet pipe 2 includes a main air inlet pipe 21 and a branch air inlet pipe 22, the axial direction of the main air inlet pipe 21 is perpendicular to the axial direction of the air injection pipe 1, the main air inlet pipe 21 is offset towards the third air injection chamber 111, the branch air inlet pipe 22 forms an included angle with the main air inlet pipe 21, one end of the branch air inlet pipe 22 is communicated with the main air inlet pipe 21 (see fig. 6), and the other end is communicated with the first air injection chamber 121. The main intake pipe 21 is provided with a communication hole 211 which communicates with the gas distribution pipe 4 through the communication hole 211. The main air inlet pipe 21 is further provided with a flange 23 for connecting with a gas proportional valve, and the flange 23 is provided with an air inlet 231 (see fig. 8) communicated with the inner cavity of the main air inlet pipe 21. Since the distance between the first and second jet chambers 121 and 112 is smaller than the distance between the first and third jet chambers 121 and 111, the flange 23 can be prevented from interfering with the first connecting pipe 32 and the first valve assembly 6 by biasing the main intake pipe 21 toward the third jet chamber 111.

Illustratively, the angle between the branch inlet pipe 22 and the main inlet pipe 21 is 15-30 °. In this embodiment, the angle between the branch air inlet pipe 22 and the main air inlet pipe 21 is set to 20 °. In addition, the main air inlet pipe 21 extends to the outer wall of the air injection pipe 1, and the main air inlet pipe 21 is a blind hole and is not communicated with the air injection pipe 1. It can be understood that the length of the gas distribution pipe 4 of the gas distributor shown in fig. 3 to 9 is smaller than that of the gas distribution pipe 4 of the gas distributor shown in fig. 2 in the case that the gas injection amount of the first gas injection chamber 121 is the same.

Preferably, the axial direction of the first gas ejection chamber 121 coincides with the axial direction of the branch gas inlet pipe 22. That is to say, the axial of first jet chamber 121 is not parallel with the axial of gas ejector 1, but is the contained angle with the axial of gas ejector 1 for the axial of first jet chamber 121 coincides with the axial of branch trachea 22, guarantees to enter into the flow and the velocity of flow of the gas in first jet chamber 121 by branch trachea 22, and then guarantees the gas injection volume of ordinary trompil.

Alternatively, referring to fig. 6, the gas nozzle 1 includes a nozzle body 11 and a partition 12 disposed inside the nozzle body 11, the partition 12 is respectively provided with a second gas injection chamber 112 and a third gas injection chamber 111 at two sides, the first gas injection chamber 121 is disposed on the partition 12, and the nozzle body 11 and the partition 12 are formed by casting. Because the pipe body 11 and the partition part 12 are of an integral structure, the pipe body 11 is divided into the second air injection chamber 112 and the third air injection chamber 111 which are positioned at two sides of the partition part 12 through the partition part 12, and the second air injection chamber 112 and the third air injection chamber 111 are separated without additionally installing structures such as the blocking cover 7 in the pipe body 11, and the structure is simpler. Forming the first gas ejection chamber 121 on the partition 12 also makes the sealing between the first gas ejection chamber 121 and the second and third gas ejection chambers 112 and 111 better.

Further, a blocking cover 7 is disposed at an end of the second air injection chamber 112 away from the partition 12 and an end of the third air injection chamber 111 away from the partition 12, so as to ensure the sealing performance of the second air injection chamber 112 and the third air injection chamber 111. A cap 7 is also provided at an end of the first gas injection chamber 121 remote from the branch gas pipe 22 to ensure the sealing property of the first gas injection chamber 121.

Optionally, the end portions of the main air inlet pipe 21, the first connecting pipe 32 and the second connecting pipe 31, which are far away from the air injection pipe 1, are provided with plugging covers 7, so that the sealing performance of the inner cavities of the pipes is ensured.

Alternatively, referring to fig. 3, 5 and 7, the number of the gas injection holes 13 on the first gas injection chamber 121 is smaller than the number of the gas injection holes 13 on the second gas injection chamber 112, and the number of the gas injection holes 13 on the second gas injection chamber 112 is smaller than the number of the gas injection holes 13 on the third gas injection chamber 111. That is, the number of the gas ejection holes 13 on each gas ejection chamber is positively correlated with the length of each gas ejection chamber. The longer the length of the gas ejection chamber, the larger the amount of gas that can be contained therein, the larger the number of gas ejection holes 13 thereon, and the larger the amount of gas ejected from the gas ejection holes 13 thereon.

Alternatively, the inner diameter of the first gas injection chamber 121 is smaller than the inner diameter of the second gas injection chamber 112, and the inner diameter of the second gas injection chamber 112 is smaller than the inner diameter of the third gas injection chamber 111. Since the number of the gas injection holes 13 of the first gas injection chamber 121 is less than the number of the gas injection holes 13 of the second gas injection chamber 112, the inner diameter of the first gas injection chamber 121 can be made smaller, which also ensures that sufficient gas is injected from the gas injection holes 13 of the first gas injection chamber 121. Similarly, the number of the gas injection holes 13 in the second gas injection chamber 112 is less than the number of the gas injection holes 13 in the third gas injection chamber 111, so that it is also ensured that sufficient gas is injected from the gas injection holes 13 in the second gas injection chamber 112.

Referring to fig. 3-7 and 9, the second valve assembly 5 includes a second valve seat 51 and a second solenoid valve (not shown), the second valve seat 51 is disposed on the gas distribution pipe 4, the second valve seat 51 is configured with a second valve seat gas collecting chamber 511 and a second valve seat gas inlet 512 and a second valve seat gas outlet 513 which are communicated with the second valve seat gas collecting chamber 511, the second valve seat gas inlet 512 is also communicated with the gas distribution pipe 4, and the second solenoid valve is used for connecting or disconnecting the second valve seat gas outlet 513 to or from the second connection pipe 31. The first valve assembly 6 includes a first valve seat 61 and a first solenoid valve (not shown), the first valve seat 61 is disposed on the gas distribution pipe 4, the first valve seat 61 is configured with a first valve seat gas collecting cavity 611 and a first valve seat gas inlet 612 and a first valve seat gas outlet 613 which are communicated with the first valve seat gas collecting cavity 611, the first valve seat gas inlet 612 is further communicated with the gas distribution pipe 4, and the first solenoid valve is used for connecting or disconnecting the first valve seat gas outlet 613 with the first connection pipe 32.

Optionally, the gas injection pipe 1, the gas inlet pipe 2, the first connecting pipe 32, the second connecting pipe 31 and the gas distribution pipe 4 are of a cast and formed integral structure. Adopt casting integrated into one piece, overall structure intensity is high, need not the assembly connection, and production efficiency is high.

Alternatively, referring to fig. 3, 5 and 7, the gas distribution pipe 4 is provided with a pressure measuring port 41, and a pressure measuring member for measuring the gas pressure in the gas distribution pipe 4 is provided in the pressure measuring port 41. The pressure in the gas distribution pipe 4 is monitored in real time through the pressure measuring and measuring piece, and it is guaranteed that when the corresponding connecting pipe is conducted through the valve assembly, enough gas enters the conducting connecting pipe in the gas distribution pipe 4.

The embodiment also provides a gas water heater, which comprises the gas distributor, has small overall size and saves materials.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The details of the foregoing embodiments are merely representative of several embodiments of the present invention, which are described in more detail and detail, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A gas distributor, comprising:

the gas injection pipe (1) is characterized in that the inner cavity of the gas injection pipe (1) is axially divided into a plurality of gas injection chambers, each gas injection chamber is provided with a gas injection hole (13), each gas injection chamber comprises a first gas injection chamber (121), a second gas injection chamber (112) and a third gas injection chamber (111), the length of the first gas injection chamber (121) is smaller than that of the second gas injection chamber (112) and that of the third gas injection chamber (111) along the axial direction of the gas injection pipe (1), and the first gas injection chamber (121) is located between the second gas injection chamber (112) and the third gas injection chamber (111);

one end of the air inlet pipe (2) is communicated with an air source, and the other end of the air inlet pipe (2) is communicated with the first air injection chamber (121);

a first connecting pipe (32) having one end of the first connecting pipe (32) communicated with an axial middle portion of the second gas injection chamber (112), and an axial direction of the first connecting pipe (32) being perpendicular to an axial direction of the second gas injection chamber (112);

a second connection pipe (31), one end of which (31) is communicated with the axial middle of the third gas injection chamber (111), and the axial direction of the second connection pipe (31) is perpendicular to the axial direction of the third gas injection chamber (111);

the gas distribution pipe (4), the axial of gas distribution pipe (4) with the axial direction parallel of jet-propelled pipe (1), the middle part of gas distribution pipe (4) with intake pipe (2) intercommunication, the one end of gas distribution pipe (4) through first valve module (6) with the other end of first connecting pipe (32) is connected, the other end of gas distribution pipe (4) pass through second valve module (5) with the other end of second connecting pipe (31) is connected.

2. Gas distributor according to claim 1, wherein the length of the third gas injection chamber (111) is greater than the length of the second gas injection chamber (112);

the air inlet pipe (2) comprises a main air inlet pipe (21) and a branch air inlet pipe (22), the axial direction of the main air inlet pipe (21) is perpendicular to the axial direction of the air injection pipe (1), the main air inlet pipe (21) is offset to the third air injection cavity (111), the branch air inlet pipe (22) and the main air inlet pipe (21) form an included angle, one end of the branch air inlet pipe (22) is communicated with the main air inlet pipe (21), the other end of the branch air inlet pipe is communicated with the first air injection cavity (121), and the branch air pipe (4) is communicated with the main air inlet pipe (21); the gas proportional valve is characterized in that a flange (23) used for being connected with a gas proportional valve is arranged on the main gas inlet pipe (21), and a gas inlet (231) communicated with an inner cavity of the main gas inlet pipe (21) is arranged on the flange (23).

3. Gas distributor according to claim 2, wherein the axial direction of the first gas injection chamber (121) coincides with the axial direction of the secondary gas pipe (22).

4. The gas distributor according to claim 2, wherein the gas injection pipe (1) comprises a pipe body (11) and a partition (12) arranged inside the pipe body (11), the second gas injection chamber (112) and the third gas injection chamber (111) are respectively arranged on two sides of the partition (12), the first gas injection chamber (121) is arranged on the partition (12), and the pipe body (11) and the partition (12) are of a cast and formed integrated structure.

5. Gas distributor according to claim 2, wherein the number of gas injection holes (13) on the first gas injection chamber (121) is smaller than the number of gas injection holes (13) on the second gas injection chamber (112), and the number of gas injection holes (13) on the second gas injection chamber (112) is smaller than the number of gas injection holes (13) on the third gas injection chamber (111).

6. Gas distributor according to claim 1, wherein the first gas injection chamber (121) has a smaller inner diameter than the second gas injection chamber (112), the second gas injection chamber (112) having a smaller inner diameter than the third gas injection chamber (111).

7. Gas distributor according to any one of claims 1 to 6, wherein the first valve assembly (6) comprises a first valve seat (61) and a first solenoid valve, the first valve seat (61) being configured with a first valve seat plenum (611) and a first valve seat gas inlet (612) and a first valve seat gas outlet (613) communicating with the first valve seat plenum (611), the first valve seat gas inlet (612) also communicating with the gas distribution pipe (4), the first solenoid valve being adapted to connect or disconnect the first valve seat gas outlet (613) to or from the first connection pipe (32);

the second valve assembly (5) comprises a second valve seat (51) and a second electromagnetic valve, the second valve seat (51) is configured with a second valve seat gas collecting cavity (511) and a second valve seat gas inlet (512) and a second valve seat gas outlet (513) which are communicated with the second valve seat gas collecting cavity (511), the second valve seat gas inlet (512) is also communicated with the gas distribution pipe (4), and the second electromagnetic valve is used for conducting or cutting off the second valve seat gas outlet (513) and the second connecting pipe (31).

8. Gas distributor according to any one of claims 1 to 6, wherein the gas injection pipe (1), the gas inlet pipe (2), the first connecting pipe (32), the second connecting pipe (31) and the gas distribution pipe (4) are of cast one-piece construction.

9. Gas distributor according to any of claims 1-6, wherein the gas distribution pipe (4) is provided with a pressure measuring port (41), and wherein a pressure measuring member for measuring the gas pressure in the gas distribution pipe (4) is arranged in the pressure measuring port (41).

10. A gas water heater comprising a gas distributor as claimed in any one of claims 1 to 9.

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