CN212339655U

CN212339655U - Gas distribution device

Info

Publication number: CN212339655U
Application number: CN202020838837.4U
Authority: CN
Inventors: 过聪颖; 黄林华
Original assignee: Zhejiang Aoneng Gas Appliance Co ltd
Current assignee: Zhejiang Aoneng Gas Appliance Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-01-12
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a gas distribution device, which comprises a combustion pipe with a side surface provided with an air inlet pipe, wherein a distribution shaft is arranged in the combustion pipe and is in running fit with the combustion pipe; the distribution shaft is provided with an air inlet communicated with the air inlet pipe and the distribution channel, the distribution shaft is circumferentially provided with at least two rows of exhaust holes, and the first exhaust holes in each row of exhaust holes are arranged in a straight line along the extension direction of the distribution shaft; the side of the combustion pipe is provided with nozzles which are arranged in a straight line along the extension direction of the combustion pipe, each nozzle corresponds to one row of exhaust holes, the nozzles are communicated with the exhaust holes through the rotation of the distribution shaft, the distribution shaft is driven by the stepping motor to rotate, the nozzles are controlled to be aligned with different exhaust holes in the distribution shaft, so that the number of the nozzles which exhaust simultaneously is adjusted, the sectional distribution of gas is realized, and the gas burner has the advantages of smaller volume, simpler structure and lower manufacturing cost.

Description

Gas distribution device

The technical field is as follows:

the utility model relates to a gas equipment technical field, concretely relates to gas heater's a gas distributor.

Background art:

at present, if a burner of a hot-pin thermostatic gas water heater on the market uses a segmentation technology, a solenoid valve is additionally arranged to control a switch of a corresponding combustion cavity to realize the segmentation of combustion. However, most gas water heaters only have two or three stages of staged combustion, which limits the minimum output power. In practical use, the temperature of the inlet water in summer is high, and the water outlet temperature is too high under the condition that the water pressure of a user is low, so that the user experience is poor, and even the phenomena of domestic hot water and the like cannot be used. Therefore, in the summer of each year, the gas water heaters of all brands are still complained of the phenomenon that the water temperature is too high.

The following technical problems mainly exist in the prior art: the existing burner sectional combustion structure realizes the combustion segmentation by controlling the switch of the corresponding combustion cavity through the electromagnetic valve, and has the defects that if the segmentation is increased, the electromagnetic valve can be added to control the relevant combustion cavity, so that the complexity, the processing difficulty, the volume, the cost and even the failure rate of the sectional structure are greatly increased; also because of the above problems, it is difficult to continue subdividing the combustor into sections with a minimum of one row of fires. In the actual combustion section of the gas water heater, if the ratio of the post-section to the pre-section is less than 0.4 (the recommended value is 0.5 or more), the "gear-off phenomenon is likely to occur (the maximum firepower after the section is not connected to the minimum firepower before the section, so that the gas water heater cannot be heated to a certain temperature point, and the repeated switching of the sections is likely to occur). For example, in a six-row combustion structure, the segmentation of one solenoid valve is generally divided into three and six divisions, and if the segmentation is to be divided into the minimum combustion of one row of fire, the segmentation of three solenoid valves is required to be realized, so that the complexity, the processing difficulty, the volume, the cost and even the failure rate of the segmented structure are greatly increased. If the number of fire rows is larger, the thinner the required segmentation, the lower the feasibility of implementation.

The invention content is as follows:

the utility model aims at solving the problem among the prior art, provide a gas distributor, through rotating the distribution axle to the epaxial exhaust hole of control distribution aligns the intercommunication with the nozzle or staggers, realizes the sectional type distribution of gas, and the volume is littleer simultaneously, the structure is simpler, manufacturing cost is lower.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a fuel gas distribution device comprises a combustion pipe with a side surface provided with an air inlet pipe, wherein a distribution shaft is arranged in the combustion pipe and is in running fit with the combustion pipe; the distribution shaft is internally provided with a distribution channel, the distribution shaft is provided with an air inlet communicated with the air inlet pipe and the distribution channel, the distribution shaft is circumferentially provided with at least two rows of exhaust holes, the first exhaust hole in each row of exhaust holes is arranged in a straight line along the extension direction of the distribution shaft, and the distances between the adjacent exhaust holes in each row of exhaust holes are the same; the side surface of the combustion pipe is provided with nozzles which are arranged in a straight line along the extension direction of the combustion pipe, each nozzle corresponds to one row of exhaust holes, and the nozzles are communicated with the exhaust holes through the rotation of the distribution shaft.

Preferably, a stepping motor is installed at one end of the combustion pipe, a driving gear is installed on an output shaft of the stepping motor, and a driven gear meshed with the driving gear is axially installed at one end of the distribution shaft.

Preferably, a fixed plate is installed at one end of the combustion pipe, a stepping motor is installed on the fixed plate, a fixed column is axially installed at one end of the distribution shaft, and a driven gear and a cover plate fixedly connected with the fixed plate are installed on the fixed column.

Preferably, a sealing ring is arranged on the outer wall of the distribution shaft between every two rows of the exhaust holes.

Preferably, the outer walls of the two ends of the distribution shaft are also provided with sealing rings.

Preferably, six rows of exhaust holes are formed in the distribution shaft, and the number of the exhaust holes in each row is 4, 3, 2, 1 and 1 respectively.

Preferably, five rows of exhaust holes are formed in the distribution shaft, and the number of the exhaust holes in each row is 5, 4, 3, 2 and 1 respectively.

Preferably, the air inlet pipe and the combustion pipe are integrally formed.

The utility model has the advantages that: the utility model discloses a fuel gas distribution device, which comprises a combustion pipe with a side surface provided with an air inlet pipe, wherein a distribution shaft is arranged in the combustion pipe and is in running fit with the combustion pipe; the distribution shaft is provided with an air inlet communicated with the air inlet pipe and the distribution channel, the distribution shaft is circumferentially provided with at least two rows of exhaust holes, and the first exhaust holes in each row of exhaust holes are arranged in a straight line along the extension direction of the distribution shaft; the side of the combustion pipe is provided with nozzles which are arranged in a straight line along the extension direction of the combustion pipe, each nozzle corresponds to one row of exhaust holes, the nozzles are communicated with the exhaust holes through the rotation of the distribution shaft, the distribution shaft is driven by the stepping motor to rotate, the nozzles are controlled to be aligned with different exhaust holes in the distribution shaft, so that the number of the nozzles which exhaust simultaneously is adjusted, the sectional distribution of gas is realized, and the gas burner has the advantages of smaller volume, simpler structure and lower manufacturing cost.

Description of the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a schematic diagram of the internal structure of the embodiment of the present invention;

fig. 4 is a schematic structural diagram of an embodiment of the present invention.

The specific implementation mode is as follows:

in order to make the technical field of the invention better understand, the invention is further described in detail with reference to the accompanying drawings and embodiments.

The gas distribution device shown in fig. 1-4 comprises a combustion pipe 2 with a side surface provided with a gas inlet pipe 1, wherein the gas inlet pipe 1 is communicated with the combustion pipe 2, a distribution shaft 3 is arranged in the combustion pipe 2, the distribution shaft 3 is in running fit with the combustion pipe 2, preferably in running fit without gap, and the distribution shaft 3 and the combustion pipe 2 are easy to rotate but cannot be loosened. The distribution shaft 3 is internally provided with a distribution channel 31, the distribution shaft 3 is provided with an air inlet 32 for communicating the air inlet pipe 1 with the distribution channel 31, the air inlet 32 is large, and the air inlet pipe 1 is ensured to be communicated with the distribution channel 31 all the time in the rotation process of the distribution shaft 3. The air inlet pipe 1 and the combustion pipe 2 are integrally formed and can be made of aluminum materials or aluminum alloy materials in a die-casting mode, and the inner surface of the combustion pipe 2 is subjected to finish machining. The distribution shaft 3 is made of copper material and has a surface finish.

At least two rows of exhaust holes 33 are formed in the circumferential direction of the distribution shaft 3, and the exhaust holes 33 are communicated with the distribution channel 31 and used for exhausting gas in the distribution shaft 3. The first outlet openings 33 of each row of outlet openings 33 are arranged in a straight line in the extension direction of the distribution axis 3, i.e. the outlet openings 33 of each row are arranged transversely and the first outlet openings 33 of each row of outlet openings 33 form a longitudinal row. The distances between the adjacent exhaust holes 33 in each row of exhaust holes 33 are the same, i.e. the second exhaust hole 33 in each row of exhaust holes 33, the third exhaust hole 33 in each row of exhaust holes 33, etc. can also form a longitudinal column respectively. The side surface of the combustion pipe 2 is provided with nozzles 4 which are arranged in a straight line along the extending direction of the combustion pipe, each nozzle 4 corresponds to one row of exhaust holes 33, and the nozzles 4 are communicated with the exhaust holes 33 through the rotation of the distribution shaft 3. Preferably, six rows of exhaust holes 33 are formed in the distribution shaft 3, and the number of the exhaust holes 33 in each row is 4, 3, 2, 1 and 1. After the distribution shaft 3 rotates a certain angle, a row of nozzles 4 on the combustion pipe 2 can be respectively communicated with 1, 2, 3 and 6 exhaust holes 33, so that four-section exhaust is realized, and the burner can realize the adjustment of 6 rows, 3 rows, 2 rows and 1 row of fire rows. As another preferable scheme, five rows of exhaust holes 33 are opened on the distribution shaft 3, and the number of the exhaust holes 33 in each row is 5, 4, 3, 2, and 1. After the distribution shaft 3 rotates a certain angle, a row of nozzles 4 on the combustion pipe 2 can be respectively communicated with 1, 2, 3, 4 and 5 exhaust holes 33, so that four-section exhaust is realized, and the burner is adjusted to realize 5 rows, 4 rows, 3 rows, 2 rows and 1 row of fire rows. In order to avoid that the nozzle 4 communicates with two venting holes 33 in the same row simultaneously when the distribution shaft 3 is rotated, the angle between two adjacent venting holes 33 in the same row is preferably greater than 40 ° apart around the circumference of the distribution shaft 3. In order to prevent the phenomenon of air leakage among the exhaust holes 33 in each row, a sealing ring 6 is arranged on the outer wall of the distribution shaft 3 among the exhaust holes 33 in each row. Preferably, the outer walls of the two ends of the distribution shaft 3 are also provided with sealing rings 6, so that the gas can be further prevented from leaking.

A stepping motor 5 is mounted at one end of the combustion pipe 2, a driving gear 51 is mounted on an output shaft of the stepping motor 5, and a driven gear 52 meshed with the driving gear 51 is axially mounted at one end of the distribution shaft 3. As a preferable scheme, a fixing plate 7 is installed at one end of the combustion tube 2, a stepping motor 5 is installed on the fixing plate 7, and the stepping motor 5 can be fixedly connected with the fixing plate 7 through screws. A fixed column 71 is axially mounted at one end of the distribution shaft 3, a cover plate 72 fixedly connected with the fixed plate 7 is mounted on the fixed column 71, the cover plate 72 can also be fixedly connected with the fixed plate 7 through screws, and a driven gear 52 meshed with the driving gear 51 is further mounted on the fixed column 71. The rotation of step motor 5 drives driving gear 51 and driven gear 52 to rotate, and driven gear 52 drives distribution shaft 3 and rotates, and control nozzle 4 aligns with different exhaust holes 33 on distribution shaft 3, realizes the sectional type distribution of gas. The rotation angle of the stepping motor 5 is determined according to the interval angle of two adjacent air discharge holes 33 in the same row on the circumference of the distribution shaft 3. The driving gear 51 and the driven gear 52 are preferably made of flame retardant plastic which can resist temperature of more than 150 ℃.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A gas distribution device, characterized by: the device comprises a combustion pipe (2) with a side surface provided with an air inlet pipe (1), wherein a distribution shaft (3) is arranged in the combustion pipe (2), and the distribution shaft (3) is in running fit with the combustion pipe (2); a distribution channel (31) is formed in the distribution shaft (3), an air inlet (32) for communicating the air inlet pipe (1) with the distribution channel (31) is formed in the distribution shaft (3), at least two rows of exhaust holes (33) are formed in the distribution shaft (3) in the circumferential direction, the first exhaust holes (33) in each row of exhaust holes (33) are arranged in a straight line along the extension direction of the distribution shaft (3), and the distances between the adjacent exhaust holes (33) in each row of exhaust holes (33) are the same; the side surface of the combustion pipe (2) is provided with nozzles (4) which are linearly arranged along the extending direction of the combustion pipe, each nozzle (4) corresponds to one row of exhaust holes (33), and the nozzles (4) are communicated with the exhaust holes (33) through the rotation of the distribution shaft (3).

2. The gas distribution device according to claim 1, characterized in that: install step motor (5) on the one end of combustion tube (2), install driving gear (51) on the output shaft of step motor (5), axial installation has driven gear (52) with driving gear (51) looks meshing on the one end of distribution axle (3).

3. The gas distribution device according to claim 2, characterized in that: the combustion device is characterized in that a fixing plate (7) is installed at one end of the combustion pipe (2), a stepping motor (5) is installed on the fixing plate (7), a fixing column (71) is axially installed at one end of the distribution shaft (3), and a driven gear (52) and a cover plate (72) fixedly connected with the fixing plate (7) are installed on the fixing column (71).

4. The gas distribution device according to claim 1, characterized in that: and sealing rings (6) are arranged on the outer wall of the distribution shaft (3) between the exhaust holes (33) in each row.

5. The gas distribution device according to claim 4, characterized in that: and sealing rings (6) are also arranged on the outer walls of the two ends of the distribution shaft (3).

6. The gas distribution device according to claim 1, characterized in that: six rows of exhaust holes (33) are formed in the distribution shaft (3), and the number of the exhaust holes (33) in each row is respectively 4, 3, 2, 1 and 1.

7. The gas distribution device according to claim 1, characterized in that: five rows of exhaust holes (33) are formed in the upper edge of the distribution shaft (3), and the number of the exhaust holes (33) in each row is respectively 5, 4, 3, 2 and 1.

8. The gas distribution device according to claim 1, characterized in that: the air inlet pipe (1) and the combustion pipe (2) are integrally formed.