CN215929552U

CN215929552U - Gas distribution system, combustor and water heater

Info

Publication number: CN215929552U
Application number: CN202122210298.7U
Authority: CN
Inventors: 王世平; 原世超
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-03-01
Anticipated expiration: 2031-09-13

Abstract

The utility model provides a gas distribution system, a combustor and a water heater, wherein the gas distribution system comprises a plurality of combustion chambers and a plurality of gas channels, each combustion chamber is provided with a flow hole, and the aperture of each flow hole is set according to the number of nozzles of the combustion chamber corresponding to the flow hole and the length of a gas inlet path from the flow hole to the gas inlet end of the corresponding gas channel. The combustor comprises the gas distribution system, and the water heater comprises the gas distribution system. The gas distribution system realizes the stability of gas supply flow to a single combustion chamber and the balance of gas supply to a plurality of combustion chambers through the arrangement of the flow holes.

Description

Gas distribution system, combustor and water heater

Technical Field

The utility model relates to a gas distribution system, a burner and a water heater.

Background

Present domestic gas heater or dual-purpose type gas hanging stove are in order to make the hot water temperature more accurate stable, adopt a plurality of combustion chambers to carry out sectional type gas combustion mode mostly, and this kind of combustion mode makes the heat load be convenient for adjust, and the burning is more reliable and more stable.

However, when the gas heating device with a plurality of combustion chambers is adopted and gas is supplied to two or more combustion chambers, the problem of unbalanced distribution of the gas in each combustion chamber exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defect of unbalanced gas distribution when a gas distribution system simultaneously supplies gas to multiple cavities in the using process in the prior art, and provides a gas distribution system, a burner and a water heater.

The utility model solves the technical problems through the following technical scheme:

a gas distribution system comprises a plurality of gas channels and a plurality of combustion chambers, wherein one gas channel is arranged corresponding to one or more combustion chambers, a plurality of nozzles are arranged in each combustion chamber, and each gas channel is provided with a gas inlet end; the fuel gas burner is characterized in that each combustion cavity is provided with a flow hole and is communicated with the corresponding fuel gas channel through the flow hole;

wherein the bore diameter of the flow orifice increases as the intake path from the flow orifice to the intake end increases; and/or the bore diameter of the flow orifice increases with the number of nozzles in the combustion chamber.

In this solution, the gas distribution system comprises a plurality of combustion chambers, one or more gas channels, each combustion chamber having one or more nozzles disposed therein. One gas channel corresponds one or more burning chamber setting, and a gas channel can be to one or more burning chamber air feed promptly, and one burning chamber only corresponds one gas channel. The gas inlet path of the fuel gas is as follows: the fuel gas enters the fuel gas distribution system from the vent of the fuel gas distribution system, sequentially flows through the channels of the structures such as the main control valve, the proportional valve and the like of the fuel gas distribution system, the gas inlet end of the fuel gas channel, the fuel gas channel and the gas outlet end of the fuel gas channel, and then directly enters the combustion cavity through the flow hole of the combustion cavity or flows through the channels of other structures such as the fuel gas distribution cavity and the like and then enters the combustion cavity through the flow hole of the combustion cavity.

The combustion chambers are provided with flow holes which play a throttling role on the fuel gas so as to adjust the fuel gas entering each combustion chamber, and the throttling role of the flow holes is increased along with the reduction of the aperture of the flow holes; when gas is independently supplied to one combustion chamber, the gas flow entering the combustion chamber is stable through the throttling effect of the flow hole, so that the firepower output is relatively stable; when gas is supplied to the plurality of combustion chambers simultaneously, the gas flow entering each combustion chamber is balanced through the throttling action of each flow hole in different degrees.

The more the number of the nozzles in the combustion chamber is, the larger the required gas flow is, the larger the flow hole aperture is required, so as to meet the requirement of large flow in the combustion chamber; the longer the air inlet path of the gas, the larger the air inlet resistance, and the larger the flow hole, so as to reduce the gas resistance and facilitate smooth air inlet. Therefore, the setting of the aperture of the flow hole needs to comprehensively consider the number of nozzles of the combustion chamber corresponding to the flow hole and the length of the gas inlet path from the flow hole to the gas inlet end of the corresponding gas channel.

The flow holes with different apertures are arranged on the combustion chamber, so that the stability and the balance of the air inflow of the combustion chamber can be realized, the control valve for controlling the gas channel and/or the combustion chamber can adopt a simple controllable valve body with the opening and closing functions to realize the control of the air inflow of the combustion chamber in the gas distribution system, further, the firepower regulation is realized, and the cost of the gas distribution system is reduced. The control valve for controlling the gas channel and/or the combustion chamber can also adopt a controllable valve body with the functions of opening and closing and flow regulation, so that the accurate control of gas inlet of the combustion chamber is realized, and further the accurate regulation of firepower is realized.

Preferably, the gas distribution system further comprises a plurality of gas distribution cavities corresponding to the gas channels one to one, and the gas distribution cavities are arranged between the gas channels and the combustion cavities; the gas distribution cavity comprises a first side wall and a second side wall which are arranged oppositely, the gas outlet end of the gas channel is arranged on the first side wall, and the flow hole is arranged on the second side wall.

In this scheme, set up the gas distribution chamber in gas distribution system to intercommunication burning chamber and gas pipeline. The gas distribution chamber has a side wall facilitating the arrangement of the flow orifice on the first side wall and facilitating the arrangement of other components, such as the arrangement of the chamber control valve on the side wall of the gas distribution chamber, etc. In addition, when the gas channel corresponds a plurality of combustion chambers, the gas distribution chamber also plays a role in shunting, and the gas flows through the gas channel, then flows into the gas distribution chamber, and flows into each combustion chamber after being shunted by the gas distribution chamber. The gas distribution cavities correspond to the gas channels one by one, and the gas inlet of the gas channels can be controlled by controlling the channel control valves, so that the gas inlet of the combustion cavities corresponding to the gas channels is controlled.

Preferably, the gas distribution system comprises a plurality of gas passages and a plurality of passage control valves for controlling the opening and closing of the gas inlet ends, and the passage control valves correspond to the gas passages one to one.

In this case, when the gas distribution system includes a plurality of gas passages, the gas inlet of the gas passages is controlled by controlling the passage control valve. Through control channel control valve to realize the admit air of controlling different gas passageways, and then realize the admit air of different combustion chambers of control, with the effect that plays the firepower and adjust. When the gas distribution system is only provided with one gas channel, the air inlet of the gas channel can be controlled through the master control valve. When different firepower is needed, air needs to be supplied to different combustion chambers, and then the air inlet of each gas channel is ensured to be adaptive to the air inlet of each combustion chamber by controlling each channel control valve.

Preferably, a plurality of the gas passages are arranged in parallel and are all arranged at one side of the gas distribution system.

In the scheme, the gas channels are arranged in parallel, so that the structure of the gas distribution system is compact. Each gas channel is arranged on one side of the gas distribution system, so that the gas distribution system is convenient to install and arrange.

Preferably, the plurality of combustion chambers include a normal chamber and an intensification chamber, the flow hole on the normal chamber is in normal communication with the gas passage, the flow hole on the intensification chamber is in controllable communication with the gas passage, and the gas distribution system further includes a chamber control valve for controlling the opening and closing of the flow hole of the intensification chamber.

In the scheme, a normal cavity and an enhancement cavity are arranged in the fuel gas distribution system. The common cavity is always communicated with the corresponding gas channel, and the air inlet of the common cavity can be controlled by controlling the channel control valve; if the valve core of the passage control valve corresponding to the normally open chamber is closed, the intake path of the normally open chamber is cut off. The opening and closing of a flow hole in the reinforcing cavity are controlled through a cavity body control valve, so that the fire power is adjusted; when the valve core of the cavity control valve corresponding to the enhanced cavity is opened, the flow hole on the enhanced cavity is opened, the enhanced cavity is communicated with the corresponding gas channel, and the gas channel simultaneously supplies gas to the corresponding combustion cavity, so that higher firepower can be realized than that when only the normal open cavity is supplied with gas; when the valve core of the cavity control valve corresponding to the enhancement cavity is closed, the flow card hole on the enhancement cavity is closed, the air inlet path of the enhancement cavity is cut off, the gas channel can only ventilate the corresponding normally open cavity, and smaller firepower can be realized when gas is supplied to the normally open cavity and the enhancement cavity simultaneously. The on-off of the air inlet path of each combustion chamber is controlled by controlling the opening and closing of each channel control valve and each cavity control valve, so that air supply to different combustion chambers is realized, and multi-stage fire regulation is realized.

Preferably, the gas channel comprises a first channel and/or a second channel, and the combustion cavity corresponding to the first channel comprises the normal cavity and the reinforcement cavity; and the combustion cavity corresponding to the second channel only comprises the normally open cavity.

In this scheme, set up first passageway and second passageway, the second passageway only corresponds the normal chamber that leads to, can control its air feed that corresponds the burning chamber through the passageway control valve of control second passageway promptly. The first channel corresponds reinforcing chamber and normal open chamber, can control the air feed of its normal open chamber that corresponds through the passageway control valve of control first channel, through the passageway control valve of controlling first channel simultaneously, with the cavity control valve that reinforcing chamber corresponds in order to control the air feed in reinforcing chamber. The air intake of each combustion chamber is controlled by controlling each channel control valve and each cavity control valve, so that the air supply control of different combustion chambers is realized, and the firepower control is realized. Simultaneously, first passageway corresponds normal general chamber and reinforcing chamber, and its normal general chamber that corresponds and reinforcing chamber sharing gas passageway make compact structure under the condition that realizes many firepowers and adjust.

Preferably, the number of the common cavities corresponding to the first channel is one; and/or the number of the common cavities corresponding to the second channel is one.

In the scheme, the number of the normally open cavities corresponding to a single first channel is one; and/or the number of the normally open cavities corresponding to the single second channel is one, and the control of the single combustion cavity can be realized by controlling the corresponding control valve, so that the accuracy of the fire control is improved. The single reinforcing cavity is controlled by the corresponding cavity control valve and the channel control valve together, and the single common cavity is controlled by the corresponding channel control valve. And the number of the normally open cavities corresponding to a single gas channel is one, and the firepower of one section corresponding to the single gas channel is the firepower of the normally open cavity corresponding to the single gas channel.

Preferably, the gas distribution system comprises one first channel, one second channel, two normal cavities and one intensification cavity, wherein the first channel corresponds to one normal cavity and one intensification cavity, and the second channel corresponds to the other normal cavity.

In this scheme, set up a first passageway and correspond a normal chamber and a reinforcing chamber, a second passageway corresponds a normal chamber, through the break-make of controlling each cavity control valve and passageway control valve, can realize the regulation of the firepower of different sections: first stage fire: independently supplying air to the normally open cavity corresponding to the first channel; fifth stage fire: independently supplying air to the normally open cavity corresponding to the second channel; second-stage fire: supplying air to the normal cavity and the strengthening cavity corresponding to the first channel; third stage fire: supplying air to the normally open cavity corresponding to the first channel and the normally open cavity corresponding to the second channel; and (3) fourth stage fire: simultaneously supplying air to the three combustion chambers. When the number of the corresponding nozzles in the three combustion chambers is different, five-section firepower adjustment can be realized, and different firepower requirements are met.

Preferably, the number of the combustion chambers is two, and the number of the nozzles arranged in the two combustion chambers is different; or the number of the combustion chambers is at least three, and the number of the nozzles arranged in at least two of the combustion chambers is different.

Preferably, the number of nozzles in each of the combustion chambers is different.

In this scheme, the nozzle quantity that each burning chamber corresponds is all inequality, can realize many fire sections under the normal open chamber of the same quantity, reinforcing chamber and nozzle configuration. Wherein, the corresponding nozzles are different in number and the corresponding fire sections are different when the air is independently supplied to any combustion chamber; simultaneously, air is supplied to any two combustion chambers, the number of corresponding nozzles is different, and the corresponding firepower sections are also different; simultaneously, the air is supplied to different combustion chambers with the same quantity, the corresponding nozzles are different in quantity, and the corresponding firepower sections are also different.

Preferably, the number of the nozzles provided in the normal chamber is smaller than the number of the nozzles provided in the reinforcement chamber.

In this scheme, minimum firepower corresponds only to a normal open chamber air feed, and the nozzle is small in quantity in the normal open chamber, guarantees that minimum firepower is little. In the multistage firepower regulation, medium and small flames are realized by ventilating the combustion chambers with a small number of nozzles, and large flames are realized by supplying gas to all the combustion chambers.

Preferably, the gas distribution system is provided with an air vent for air intake, the gas distribution system further comprises a master control valve and/or a proportional valve, one side of the proportional valve is communicated with a plurality of air intake ends of the gas channels, the other side of the proportional valve is communicated with the master control valve, and the master control valve is communicated with the air vent.

In the scheme, a master control valve and/or a proportional valve are/is arranged in the fuel gas distribution system so as to realize the integral fuel gas inlet control of the fuel gas distribution system. The master control valve is communicated with the air vent, and the on-off of the fuel gas distribution system is controlled through the master control valve. The proportional valve is communicated with the main control valve, and the total gas flow of the gas distribution system is adjusted through the proportional valve.

Preferably, the gas distribution system has an opening, and the gas distribution system further comprises a cover plate detachably disposed on the opening;

the gas distribution system also includes a seal disposed between the opening and the cover plate.

In this scheme, gas distribution system sets up the opening to cover through the apron, so that when spare part trouble or the maintenance that needs of installing on the combustion chamber or in the combustion chamber such as nozzle, cavity control valve, open the apron and maintain.

Preferably, a burner comprising any one of the gas distribution systems described above.

In this scheme, use aforementioned gas distribution system in the combustor, through set up the flow hole in different apertures on the combustion chamber, can realize the stability and the equilibrium of combustion chamber inlet flow.

Preferably, a water heater comprising any one of the gas distribution systems described above.

In this scheme, use aforementioned gas distribution system in the water heater, through set up the flow hole in different apertures on the combustion chamber, can realize the stability and the equilibrium of combustion chamber inlet flow.

The positive progress effects of the utility model are as follows:

the flow holes are arranged on each combustion cavity, the aperture of each flow hole is arranged according to the number of nozzles of the combustion cavity corresponding to the flow holes and the length of a gas inlet path from each flow hole to the corresponding gas inlet end of the gas channel, and therefore the stability of gas supply flow of the gas distribution system to a single combustion cavity and the balance of gas supply to a plurality of combustion cavities are achieved. Through setting up a plurality of gas passages, a plurality of burning chamber, and through setting up the air feed that each gas passage and burning chamber were controlled to the control valve, realize the regulation of multistage firepower. The gas distribution system with balanced and stable gas distribution and multiple fire adjusting functions is applied to the burner and/or the water heater, so that the fire adjustment of the burner and/or the water heater is realized, and different fire requirements are met.

Drawings

Fig. 1 is a schematic structural diagram of a first view of a gas distribution system according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second view of the gas distribution system according to an embodiment of the utility model.

Fig. 3 is a schematic structural diagram of a third view of the gas distribution system according to the embodiment of the utility model.

Fig. 4 is a schematic structural diagram of a fourth view of the gas distribution system according to the embodiment of the utility model.

Fig. 5 is a cross-sectional view taken at a-a in fig. 4.

Fig. 6 is a schematic structural diagram of a fifth view of the gas distribution system according to the embodiment of the utility model.

Fig. 7 is a partial enlarged view of fig. 6 at B.

FIG. 8 is a schematic view of the gas passages and the intake path of the combustion chamber according to an embodiment of the present invention.

FIG. 9 is a schematic view of the gas inlet path for a first stage fire according to one embodiment of the present invention.

FIG. 10 is a schematic view of the gas inlet path for the second stage fire according to one embodiment of the present invention.

FIG. 11 is a schematic view of the gas inlet path for a third stage fire in accordance with an embodiment of the present invention.

FIG. 12 is a schematic view of the gas intake path for a fifth stage fire according to another embodiment of the present invention.

Description of reference numerals:

gas distribution system 10, vents 11;

a gas channel 20, a first channel 21, a second channel 22, a gas inlet end 23, a gas outlet end 24, a channel control valve 25, a first electromagnetic valve 26 and a second electromagnetic valve 27;

a combustion chamber 30, a normally open chamber 31, an intensification chamber 32, a nozzle 33, a flow orifice 34, a first combustion chamber 35, a second combustion chamber 36, a third combustion chamber 37, a chamber control valve 38, a third solenoid valve 39;

a gas distribution chamber 40, a first side wall 41, a second side wall 42, a first distribution chamber 43, a second distribution chamber 44;

the general control valve 51, the proportional valve 52, the cover plate 53, the bolt 54, the sealing member 55, the opening 56;

a first orifice 61, a second orifice 62, a third orifice 63;

a first inlet 231, a second inlet 232, a first outlet 241, and a second outlet 242.

Detailed Description

The utility model is further illustrated by the following examples, which are not intended to limit the scope of the utility model.

Fig. 1-7 are schematic structural views of a gas distribution system 10 according to an embodiment of the present invention.

As shown in fig. 1 to 4, the gas distribution system 10 includes a main control valve 51, a proportional valve 52, two gas passages 20, two gas distribution chambers 40, three combustion chambers 30, two passage control valves 25, and a chamber control valve 38. On the gas inlet path as shown in fig. 8, the master control valve 51, the proportional valve 52, the gas channels 20, the gas distribution chamber 40, and the combustion chamber 30 are sequentially disposed, wherein the master control valve 51 can communicate with the gas ports 11 of the gas distribution system 10, and the two gas channels 20 are disposed side by side and on one side of the gas distribution system 10. The master control valve 51 is an electromagnetic valve, and the on-off of the gas distribution system 10 is controlled by the master control valve 51. The total gas flow of the gas distribution system 10 is regulated by a proportional valve 52.

The gas inlet end 23 and the gas outlet end 24 of the gas channel 20 are connected through a gas pipeline (not marked in the figure), and the vent 11, the master control valve 51, the proportional valve 52, the gas channel 20 and the gas distribution cavity 40 are also connected through the gas pipeline.

As shown in fig. 1, the two gas passages 20 are a first passage 21 and a second passage 22, respectively, and the two passage control valves 25 are a first solenoid valve 26 and a second solenoid valve 27, respectively; the air inlet end 23 of the first channel 21 is a first air inlet end 231, the air outlet end 24 is a first air outlet end 241, and the first electromagnetic valve 26 is arranged at the first air inlet end 231 and used for controlling the on-off of the first air inlet end 231; the air inlet end 23 of the second channel 22 is a second air inlet end 232, the air outlet end 24 is a second air outlet end 242, and the second electromagnetic valve 27 is disposed at the second air inlet end 232 and is used for controlling on/off of the second air inlet end 232.

In other embodiments, the number of the first passages 21 and the second passages 22 may be different from that of the present embodiment. In other embodiments, the gas passages 20 may be all the first passages 21, or all the second passages 22. In other embodiments, only one gas channel 20 may be provided. In other embodiments, the type of the combustion chamber 30 and the number of the combustion chambers 30 corresponding to each gas channel 20 may be different from the present embodiment. In other embodiments, the position of the channel control valve 25 may be different from that of the present embodiment, the channel control valve 25 may be disposed in the middle of the channel, or may be disposed at other positions such as the channel gas outlet end 24, and the channel control valve 25 may be disposed as long as it can control the gas inlet of the gas channel 20. In other embodiments, the gas passage 20 may not be provided, and the passage control valve 25 may not be provided.

As shown in fig. 4, the gas distribution chamber 40 has a first sidewall 41 and a second sidewall 42, the first sidewall 41 is connected to the gas outlet end 24 of the gas channel 20, the second sidewall 42 is connected to the combustion chamber 30, and the flow holes 34 of the combustion chamber 30 are opened on the second sidewall 42. In other embodiments, the gas distribution cavity 40 may not be provided, or the gas passages 20 and the gas distribution cavity 40 may not correspond to each other.

The three combustion chambers 30 are a first combustion chamber 35, a second combustion chamber 36 and a third combustion chamber 37, respectively. The first and

third combustion chambers

35 and 37, the first distribution chamber 43, the first passage 21 correspond to each other; the second combustion chamber 36, the second distribution chamber 44, and the second passage 22 correspond to each other.

As shown in fig. 5, the three combustion chambers 30 are provided with flow holes 34, the flow holes 34 are provided on the second side wall 42, and the combustion gas enters the corresponding combustion chamber 30 through the flow holes 34, wherein the first combustion chamber 35 corresponds to the first flow hole 61, the second combustion chamber 36 corresponds to the second flow hole 62, and the third combustion chamber 37 corresponds to the third flow hole 63. In other embodiments, a plurality of flow orifices 34 may be provided in a single combustion chamber 30, the total number and size of the flow orifices 34 being such that the charge is stable and uniform across the plurality of combustion chambers 30.

The first combustion chamber 35 and the second combustion chamber 36 are normally open chambers 31, and the flow holes 34 of the first combustion chamber 35 and the second combustion chamber 36 are always in an open state; the first combustion chamber 35, the first distribution chamber 43, the first passage 21 are kept normally open; the second combustion chamber 36, the second distribution chamber 44, and the second passage 22 are kept normally open.

The third combustion chamber 37 is the intensification chamber 32, and the opening and closing of the third flow orifice 63 is controlled by a third solenoid valve 39, and the third solenoid valve 39 is attached to the first side wall 41 of the gas distribution system 10. The first distribution chamber 43 and the first passage 21 are kept normally open, and the communication of the third combustion chamber 37 with the first distribution chamber 43 and the first passage 21 is controlled by the third solenoid valve 39.

In other embodiments, the number of the normally open cavities 31 and the reinforcement cavities 32 may be different from that of the present embodiment, and the combustion cavity 30 may include the normally open cavities 31 and the reinforcement cavities 32, and may be all of the normally open cavities 31 or all of the reinforcement cavities 32.

The master control valve 51, the first electromagnetic valve 26, the second electromagnetic valve 27 and the third electromagnetic valve 39 are all electromagnetic valves which can only realize the opening and closing functions, the cost is low, but the regulating function cannot be realized.

In other embodiments, the general control valve 51, the first electromagnetic valve 26, the second electromagnetic valve 27, and the third electromagnetic valve 39 may be other types of control valves, and may also be control valves having opening and closing and flow rate regulating functions.

All be provided with a plurality of nozzles 33 in the three combustion chamber 30, the nozzle 33 quantity that sets up in first combustion chamber 35, second combustion chamber 36, the third combustion chamber 37 is 4 respectively, 3, 7.

In other embodiments, the total number of nozzles 33 in the combustion chamber 30 may be different from that in the present embodiment, and the number of nozzles 33 in the plurality of combustion chambers 30 may be all the same, some of them, or all of them. In other embodiments, a greater number of nozzles 33 may be provided in the intensification chamber 32 than in the normally-open chamber 31, with the number of nozzles 33 in the combustion chamber 30 being designed according to the specific requirements of the gas distribution system 10.

As shown in fig. 1, the side walls of the three combustion chambers 30 and the two gas distribution chambers 40 enclose an opening 56 forming the gas distribution system 10, the direction of the opening 56 being away from the direction of the nozzle 33 in the combustion chamber 30. The gas distribution system 10 further comprises a cover plate 53 and a seal 55, the cover plate 53 being arranged above the opening 56, the seal 55 being arranged between the cover plate 53 and the opening 56. The opening 56, the cover plate 53 and the sealing element 55 are matched and connected through the bolt 54.

In other embodiments, the shape, coverage area, etc. of the opening 56 may be different from those of the present embodiment, and in other embodiments, the opening 56 may be provided only above or on the side of the combustion chamber 30, or the opening 56 may be provided only above or on the side of the gas distribution chamber 40, and the arrangement of the opening 56 is designed according to the specific structure of the gas distribution system 10, as long as the opening 56, the cover plate 53 and/or the sealing member 55 are ensured to be matched with each other. In other embodiments, the gas distribution system 10 may be provided without the opening 56 and, accordingly, without the cover plate 53 and the seal 55.

As shown in fig. 8, the gas intake path is: the air port 11 → the total control valve 51 → the proportional valve 52 → the air intake end 23 of the gas passage 20 → the air outlet end 24 of the gas passage 20 → the gas distribution chamber 40 → the flow hole 34 → the combustion chamber 30, and the gas flowing into the combustion chamber 30 is finally supplied to the nozzle 33 in the combustion chamber 30, and combustion generates heat at the nozzle 33.

The gas inlet path corresponding to the first combustion chamber 35 is: air port 11 → total control valve 51 → proportional valve 52 → first air intake end 231 → first channel 21 → first air outlet end 241 → first distribution chamber 43 → first flow orifice 61 → first combustion chamber 35.

The gas inlet path corresponding to the second combustion chamber 36 is: air port 11 → total control valve 51 → proportional valve 52 → second air intake end 232 → second channel 22 → second air outlet end 242 → second distribution chamber 44 → second flow orifice 62 → second combustion chamber 36.

The gas inlet path corresponding to the third combustion chamber 37 is: air port 11 → total control valve 51 → proportional valve 52 → first air intake end 231 → first channel 21 → first air outlet end 241 → first distribution chamber 43 → third flow orifice 63 → third combustion chamber 37.

The aperture of the flow hole 34 on the combustion chamber 30 is set by comprehensively considering the number of the nozzles 33 of the combustion chamber 30 corresponding to the flow hole 34 and the length of the gas inlet path from the flow hole 34 to the gas inlet end 23 of the corresponding gas channel 20.

Wherein, although the gas intake path from the first flow holes 61 to the first intake end 231 and the gas intake path from the second flow holes 62 to the second intake end 232 are identical in length, the number of the nozzles 33 provided in the first combustion chamber 35 and the second combustion chamber 36 is different by one, and thus the aperture diameter of the first flow holes 61 is set to be slightly larger than that of the second flow holes 62.

Compared with the third flow holes 63, the gas inlet path from the third flow holes 63 to the first gas inlet end 231 is longer than that of the first flow holes 61, the gas inlet resistance of the third combustion chamber 37 is larger than that of the first combustion chamber 35, the number of the nozzles 33 in the third combustion chamber 37 is 3 more than that of the nozzles 33 in the first combustion chamber 35, and the gas flow demand of the third combustion chamber 37 is larger than that of the first combustion chamber 35, so that the aperture of the third flow holes 63 is 5 times that of the first flow holes 61, so that the third combustion chamber 37 can smoothly inlet gas, and the gas inlet balance of each combustion chamber 30 can be realized when gas is simultaneously supplied to the third combustion chamber 37 and other combustion chambers 30.

By controlling the opening and closing of the first electromagnetic valve 26, the second electromagnetic valve 27, and the third electromagnetic valve 39, air can be supplied to different combustion chambers 30, and the multi-stage fire control of the gas distribution system 10 can be realized.

During operation of the gas distribution system 10, the overall control valve 51 and the proportional valve 52 are opened. The gas distribution system 10 provided by the embodiment can provide four stages of firepower and meet different firepower requirements.

First stage fire: the master control valve 51, the proportional valve 52 and the first electromagnetic valve 26 are all opened, the second electromagnetic valve 27 and the third electromagnetic valve 39 are closed, at the moment, air is only supplied to the first combustion chamber 35, and 4 nozzles 33 in the first combustion chamber 35 spray gas for combustion; the gas path at this time is shown in fig. 9.

Second-stage fire: the master control valve 51, the proportional valve 52, the first electromagnetic valve 26 and the second electromagnetic valve 27 are all opened, the third electromagnetic valve 39 is closed, air is simultaneously supplied to the first combustion chamber 35 and the second combustion chamber 36, and 7 nozzles 33 in the two combustion chambers 30 spray gas for combustion; the gas path at this time is shown in fig. 10.

Third stage fire: the master control valve 51, the proportional valve 52, the first electromagnetic valve 26 and the third electromagnetic valve 39 are all opened, the second electromagnetic valve 27 is closed, air is simultaneously supplied to the first combustion chamber 35 and the

third combustion chamber

37, and 11 nozzles 33 in the two combustion chambers 30 spray gas for combustion; the gas path at this time is shown in fig. 11.

And (3) fourth stage fire: the master control valve 51, the proportional valve 52, the first electromagnetic valve 26, the second electromagnetic valve 27 and the third electromagnetic valve 39 are all opened, gas is simultaneously supplied to the first combustion chamber 35, the second combustion chamber 36 and the third combustion chamber 37, and 14 nozzles 33 in the three combustion chambers 30 spray gas for combustion; the gas path at this time is shown in fig. 8.

In other embodiments, the heating power setting of the gas distribution system 10 may be different from that of the present embodiment, and the total number of stages of heating power, the gas intake path corresponding to each stage of heating power, and the like may be different from that of the present embodiment. In other embodiments, a fifth stage fire may also be provided: the master control valve 51, the proportional valve 52 and the second electromagnetic valve 27 are opened, the first electromagnetic valve 26 and the third electromagnetic valve 39 are closed, gas is only supplied to the second combustion chamber 36 at the moment, and 3 nozzles 33 in the second combustion chamber 36 spray gas for combustion; the gas path at this time is shown in fig. 12.

In other embodiments, the gas distribution system 10 of the present embodiment and the other embodiments described above can be applied to a burner or a water heater, and the technology for applying the gas distribution system 10 to a burner or a water heater is well-established, and the specific arrangement can refer to the prior art means.

In other embodiments, the gas distribution system 10 of the present invention may also be used as a distribution system for other fluids, except that the distributed fluid is changed from gas to other fluids. Accordingly, the nozzle 33 in the combustion chamber 30 may be replaced with a structure such as a nozzle head for facilitating the outflow of the corresponding fluid.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.

Claims

1. A gas distribution system comprises a plurality of gas channels and a plurality of combustion chambers, wherein one gas channel is arranged corresponding to one or more combustion chambers, a plurality of nozzles are arranged in each combustion chamber, and each gas channel is provided with a gas inlet end; each combustion cavity is provided with a flow hole and is communicated with the corresponding gas channel through the flow hole;

2. The gas distribution system of claim 1, further comprising a plurality of gas distribution chambers in one-to-one correspondence with said gas passages, said gas distribution chambers being disposed between said gas passages and said combustion chambers; the gas distribution cavity comprises a first side wall and a second side wall which are arranged oppositely, the gas outlet end of the gas channel is arranged on the first side wall, and the flow hole is arranged on the second side wall.

3. The gas distribution system of claim 1, including a plurality of said gas passages, and a plurality of passage control valves for controlling the opening and closing of said gas inlet ends, said passage control valves corresponding one-to-one to said gas passages.

4. The gas distribution system of claim 3, wherein a plurality of said gas passages are arranged in parallel and are each disposed on one side of said gas distribution system.

5. The gas distribution system of claim 1, wherein said plurality of combustion chambers includes a common chamber and an intensification chamber, said flow orifice in said common chamber being in common with said gas passageway and said flow orifice in said intensification chamber being in controllable communication with said gas passageway, said gas distribution system further including a chamber control valve for controlling opening and closing of said flow orifice in said intensification chamber.

6. The gas distribution system according to claim 5, wherein said gas channel comprises a first channel and/or a second channel, said first channel corresponding to said combustion chamber, including said common chamber and said booster chamber; and the combustion cavity corresponding to the second channel only comprises the normally open cavity.

7. The gas distribution system according to claim 6, wherein said first passage corresponds to one number of said common chambers; and/or the number of the common cavities corresponding to the second channel is one.

8. The gas distribution system of claim 6, including one said first passageway corresponding to one said common chamber and one said intensification chamber, one said second passageway corresponding to the other said common chamber, two said common chambers, and one said intensification chamber.

9. The gas distribution system according to claim 1, wherein said combustion chambers are two in number and said nozzles are provided in two different combustion chambers; or the number of the combustion chambers is at least three, and the number of the nozzles arranged in at least two of the combustion chambers is different.

10. The gas distribution system of claim 9, wherein the number of said nozzles in each of said combustion chambers is different.

11. The gas distribution system of claim 5, wherein a number of said nozzles disposed in said common chamber is less than a number of said nozzles disposed in said booster chamber.

12. The gas distribution system according to claim 1, wherein the gas distribution system is provided with a vent for air intake, the gas distribution system further comprises a master control valve and/or a proportional valve, one side of the proportional valve is communicated with the air intake ends of the plurality of gas channels, the other side of the proportional valve is communicated with the master control valve, and the master control valve is communicated with the vent.

13. The gas distribution system of claim 1, wherein said gas distribution system has an opening, said gas distribution system further comprising a cover plate removably disposed over said opening;

14. A burner comprising a gas distribution system as claimed in any one of claims 1 to 13.

15. A water heater comprising a gas distribution system as claimed in any one of claims 1 to 13.