CN216080333U - Multi-gear flow dividing device and water heater - Google Patents

Abstract

The utility model discloses a multi-gear flow dividing device and a water heater, wherein the water heater comprises the multi-gear flow dividing device, the multi-gear flow dividing device comprises a flow dividing pipe, a piston piece and a switching piece, the flow dividing pipe is provided with a main channel and a plurality of output channels communicated with the main channel, the piston piece is connected with the flow dividing pipe and is provided with a plurality of corresponding output channels, the plurality of piston pieces are respectively in one-to-one correspondence with the plurality of output channels, each piston piece can enable the corresponding output channel to be disconnected and communicated with the main channel, the switching piece is connected with the flow dividing pipe, and the switching piece can drive the piston piece to move and can change the number of the driven piston pieces so as to enable the output channels and the main channels in the corresponding number to be opened and communicated. The quantity of the piston pieces driven by the switching piece is changed, so that the quantity of the output channels communicated with the main channel is changed, and the gas on-off control of a single output channel and the incremental and decremental change of the quantity of the output channels outputting the gas are realized.

Description

Multi-gear flow dividing device and water heater

Technical Field

The utility model relates to the technical field of gas equipment, in particular to a multi-gear flow dividing device and a water heater.

Background

The existing gas water heater generally comprises a fire grate combustor and a shunt pipe assembly connected to the fire grate combustor, wherein the fire grate combustor is provided with a plurality of fire grates, the shunt pipe assembly is provided with an electromagnetic valve and a plurality of output channels in one-to-one correspondence with the fire grates, and the gas on-off condition of the output channels is controlled through the electromagnetic valve so as to control the on-off of gas output to the fire grates. For the existing shunt pipe assembly, one electromagnetic valve on the shunt pipe assembly generally controls the on-off of gas of two to three output channels simultaneously and correspondingly, so that each electromagnetic valve controls two to three fire rows correspondingly, the arrangement mode cannot realize the on-off control of gas of a single output channel or the incremental and decremental change of the number of the output channels for outputting gas, the firepower change degree of a burner is large, and the use requirements of different users cannot be well met; however, if each solenoid valve is arranged to individually control the on-off of the gas in one output channel, the arrangement mode increases the number of the solenoid valves, and each solenoid valve needs to be correspondingly configured with a control module, which increases the complexity of the system, increases the production cost, and is inconvenient for production and application.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. The utility model provides a multi-gear flow dividing device, which is characterized in that piston pieces corresponding to a plurality of output channels one by one are arranged, the piston pieces are driven by a switching piece to move so as to control the on-off between the output channels and a main channel, the number of the piston pieces driven by the switching piece is changed, so that the number of the output channels communicated with the main channel is changed, the structure is simple and reasonable, and the on-off control of fuel gas of a single output channel and the incremental and decremental change of the number of the output channels for outputting fuel gas can be realized.

The utility model also provides a water heater with the multi-gear flow dividing device.

The multi-gear splitting device according to the embodiment of the first aspect of the present invention includes a splitting pipe, a piston member, and a switching member, wherein the splitting pipe is provided with a main channel and a plurality of output channels communicated with the main channel, the piston member is connected to the splitting pipe and provided with a plurality of output channels corresponding to the output channels, the plurality of piston members are respectively in one-to-one correspondence with the plurality of output channels, each piston member is capable of disconnecting and communicating the corresponding output channel with the main channel, the switching member is connected to the splitting pipe, and the switching member is capable of driving the piston members to move and changing the number of the driven piston members so as to open and communicate between the corresponding number of the output channels and the main channel.

The multi-gear shunting device provided by the embodiment of the utility model at least has the following beneficial effects: during the use, every delivery channel corresponds a fire row, the main entrance of gas input to shunt tubes, through setting up the piston spare with a plurality of delivery channel one-to-one, every piston spare can make the disconnection intercommunication between delivery channel and the main entrance that corresponds alone, order about the piston spare that corresponds by the switching piece and remove, make the intercommunication of opening between delivery channel and the main entrance that corresponds, make gas can be through the delivery channel output that corresponds in the main entrance, through changing the quantity of the piston spare that the switching piece ordered about, thereby change the quantity of the delivery channel with the main entrance intercommunication, change the delivery channel quantity of delivery gas, adjust the firepower of combustor, moreover, the steam generator is simple in structure reasonable, and can realize the gas on-off control of single delivery channel and the incremental change that the delivery channel quantity of delivery gas progressively decreases, and convenient to use.

According to some embodiments of the present invention, the plurality of output channels are arranged at intervals along the axial direction of the main channel, a first communication hole is arranged between the main channel and the output channel, the piston member is slidably connected to the output channel and provided with a plug portion capable of plugging the first communication hole, the switching member is in a rotating shaft structure and is rotatably connected to the flow dividing pipe, the piston member is provided with a rod portion corresponding to the switching member, and an outer peripheral wall of the switching member can abut against the rod portion and can push against the rod portion along with the rotation of the switching member, so that the piston member can move relative to the first communication hole and can release the plugging of the plug portion to the first communication hole.

According to some embodiments of the utility model, the switching member is provided with a plurality of avoidance grooves, the avoidance grooves are arranged at intervals along the axial direction of the switching member and correspond to the plurality of rod portions one by one, the avoidance grooves are arranged around the circumferential direction of the switching member and are in an arc groove structure, the radian corresponding to each avoidance groove is increased progressively along the axial direction of the switching member, and the avoidance grooves can be used for the corresponding rod portions to avoid and extend into the avoidance grooves.

According to some embodiments of the utility model, a transition curved surface is arranged between the groove bottom of the avoiding groove and the outer peripheral wall of the switching piece.

According to some embodiments of the utility model, the switch is rotatably disposed within the main channel.

According to some embodiments of the utility model, a driver is connected to the switch member, and the driver can drive the switch member to rotate.

According to some embodiments of the utility model, an elastic member is connected to the piston member, and the plug portion is capable of plugging the first communication port by the elastic member.

According to some embodiments of the present invention, the shunt tube is further provided with an input channel and a solenoid valve channel, the input channel is communicated with the main channel through the solenoid valve channel, a second communication port is arranged between the solenoid valve channel and the main channel, and the shunt tube is connected with a solenoid valve capable of blocking the second communication port.

According to some embodiments of the utility model, the shunt tube is provided with a pressure measuring channel communicated with the main channel.

The water heater according to the second aspect embodiment of the utility model comprises the multi-gear diversion device according to the first aspect embodiment of the utility model.

The water heater provided by the embodiment of the utility model has at least the following beneficial effects: by adopting the multi-gear flow dividing device, the number of output channels for outputting fuel gas can be controlled, the fuel gas on-off control of a single output channel and the incremental and decremental change of the number of the output channels for outputting the fuel gas are realized, so that the burner can realize the gradual fire regulation, and the multi-gear flow dividing device can better adapt to the use requirements of different users.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a multi-gear shunt device according to an embodiment of the utility model;

FIG. 2 is an exploded view of the multi-gear splitter of FIG. 1;

FIG. 3 is a schematic view of the piston member and the resilient member of FIG. 2;

FIG. 4 is a cross-sectional view of the multi-gear splitting device of FIG. 1;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a second schematic cross-sectional view of the multi-gear flow divider of FIG. 1;

FIG. 7 is a schematic structural diagram of the switching member shown in FIG. 1;

fig. 8 is a schematic cross-sectional view of the switching element of fig. 7 from another perspective.

Reference numerals:

the flow dividing pipe 100, the main channel 101, the output channel 102, the first communication port 103, the input channel 104, the solenoid valve channel 105, the second communication port 106, the pressure measuring channel 107, the solenoid valve 110, the nozzle 120 and the blocking piece 130;

piston member 200, plug portion 210, rod portion 220;

the device comprises a switching piece 300, an avoidance groove 301 and a transition curved surface 302;

driver 400, elastic member 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that if an orientation description is referred to, for example, the directions of orientation or positional relationship indicated as up, down, etc. are based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if several, more than, less than, more than, above, below, or within words appear, several means are one or more, several means are two or more, more than, less than, more than, etc. are understood as not including the number, and more than, less than, within, etc. are understood as including the number.

If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, 2 and 3, a multi-gear splitting device includes a splitting pipe 100, a piston member 200 and a switching member 300, the splitting pipe 100 is provided with a main channel 101 and a plurality of output channels 102 communicated with the main channel 101, the piston member 200 is connected to the splitting pipe 100 and is provided with a plurality of corresponding output channels 102, the plurality of piston members 200 are respectively in one-to-one correspondence with the plurality of output channels 102, each piston member 200 can disconnect the corresponding output channel 102 from the main channel 101, the switching member 300 is connected to the splitting pipe 100, the switching member 300 can drive the piston members 200 to move and can change the number of driven piston members 200, so that the corresponding number of output channels 102 is communicated with the main channel 101.

It can be understood that, as shown in fig. 1, 2 and 3, the shunt tube 100 is provided with seven output passages 102, the piston member 200 is correspondingly provided with seven to correspond to the seven output passages 102 one by one, and the outlet end of each output passage 102 is connected with a nozzle 120 to spray the output gas through the nozzle 120. When in use, each output channel 102 can correspond to one fire grate, gas is input into the main channel 101 of the shunt pipe 100, each piston member 200 can independently disconnect and communicate the corresponding output channel 102 and the main channel 101, the switching member 300 drives the corresponding piston member 200 to move, so that the corresponding output channel 102 and the main channel 101 are opened and communicated, gas in the main channel 101 can be output through the corresponding output channel 102, the number of the piston members 200 driven by the switching member 300 is changed, so that the number of the output channels 102 communicated with the main channel 101 is changed, the number of the output channels 102 for outputting gas is changed, the combustion of the gas output by the corresponding number of fire grates is controlled, the fire power of a burner is adjusted, the structure is simple and reasonable, the single piston member 200 can be driven by the switching member 300 to move, the gas on-off control of the single output channel 102 is realized, the number of the piston members 200 driven by the switching member 300 can be changed, the number of the output channels 102 communicated with the main channel 101 is changed from one to at most in an increasing mode or from one to at most in a decreasing mode, so that the burner can achieve gradual fire power adjustment and is convenient to use.

In practical applications, the specific structures of the piston member 200 and the switching member 300 can be set according to practical needs, and will not be described in detail herein, and will be described in detail below.

In some embodiments, the plurality of output channels 102 are spaced apart from each other in the axial direction of the main channel 101, a first communication hole 103 is formed between the main channel 101 and the output channel 102, the piston member 200 is slidably connected to the output channel 102 and has a plug portion 210 capable of blocking the first communication hole 103, the switch member 300 is in a rotating shaft structure and is rotatably connected to the flow dividing tube 100, the piston member 200 has a rod portion 220 corresponding to the switch member 300, and the outer peripheral wall of the switch member 300 can abut against the rod portion 220 and can abut against the rod portion 220 along with the rotation of the switch member 300, so that the piston member 200 can move relative to the first communication hole 103 and the blocking of the plug portion 210 on the first communication hole 103 can be released.

It can be understood that, as shown in fig. 2, 3, 4 and 5, seven output channels 102 are arranged at intervals along the axial direction of the main channel 101, the piston member 200 is slidably connected to the output channels 102 and can move up and down, the plug portion 210 normally blocks the first communication port 103 to disconnect the corresponding output channel 102 from the main channel 101, and the switching member 300 is in a rotating shaft structure and is rotatably connected to the shunt tube 100. When the piston type piston switching device is used, the switching piece 300 can rotate to enable the outer peripheral wall of the switching piece to be abutted against the rod portion 220, the outer peripheral wall of the switching piece 300 can rotate along with the switching piece 300 to abut against the rod portion 220, so that the piston piece 200 moves relative to the first communication port 103, the blocking of the first communication port 103 by the plug portion 210 is removed, the corresponding output channel 102 is communicated with the main channel 101 in an opening mode, the structure is simple, one or more piston pieces 200 can be driven to move through the switching piece 300, and the piston type piston switching device is convenient to use.

In practical applications, the switching member 300 may be movably connected to the shunt tube 100, the switching member 300 is provided with an inclined pushing surface, the inclined pushing surfaces push the piston members 200 one by moving the switching member 300 along the axial direction of the main channel 101, so that one or more piston members 200 can be driven to move by one switching member 300, and the number of the piston members 200 driven by the switching member 300 can be controlled and changed by controlling the moving stroke of the switching member 300 along the axial direction of the main channel 101, of course, there are various ways in which the switching member 300 can drive the piston members 200 to move and can change the number of the driven piston members 200, and the ways can be set according to actual needs, which will not be described in detail herein, and other ways will be described in detail below.

In some embodiments, the switch 300 is provided with a plurality of avoiding grooves 301, the plurality of avoiding grooves 301 are axially spaced from the switch 300 and are in one-to-one correspondence with the plurality of rod portions 220, the avoiding grooves 301 are circumferentially arranged around the switch 300 and have an arc-shaped groove structure, the radian corresponding to each avoiding groove 301 increases progressively along the axial direction of the switch 300, and the avoiding grooves 301 can be used for the corresponding rod portions 220 to avoid and extend into the grooves.

It can be understood that, as shown in fig. 4, 5, 7 and 8, seven avoiding grooves 301 are provided on the switching member 300, and the seven avoiding grooves 301 are provided at intervals in the axial direction of the switching member 300 and correspond to the seven lever portions 220 one to one. In a normal state, the lower end of the rod part 220 extends into the avoiding groove 301 in an avoiding manner, when the switching part 300 is rotated, the lower end of the rod part 220 is separated from the avoiding groove 301, the rod part 220 is pushed to move upwards through the outer peripheral wall of the switching part 300, and therefore the piston part 200 moves upwards; because the radian corresponding to each avoidance groove 301 is increased in the axial direction of the switching piece 300, the rotation angles required for the different rod parts 220 to be separated from the corresponding avoidance grooves 301 are different, the rotation angles of the switching piece 300 are controlled to be increased, so that the rod parts 220 are separated from the corresponding avoidance grooves 301 one by one, the number of the piston pieces 200 which can be actuated by the switching piece 300 is increased in an increasing manner, and similarly, the switching piece 300 is reset and rotated, so that the rod parts 220 fall into the corresponding avoidance grooves 301 one by one, the number of the piston pieces 200 which can be actuated by the switching piece 300 is decreased in an increasing manner, the function that the switching piece 300 can change the number of the actuated piston pieces 200 is realized, the structure is simple, the number of the piston pieces 200 which can be controlled to be pushed can be realized by controlling the rotation angle of the switching piece 300, and the operation is convenient.

During practical application, except that setting up and dodging groove 301, can also push away pole portion 220 through setting up curved protruding structure on the periphery wall of switching piece 300, change through the radian that the different protruding structures of control correspond, realize supporting the control that pushes away quantity to pole portion 220, or switch and set up the cam of multistage on the piece 300 to form the crankshaft structure, push away pole portion 220 through the cam, specifically can be according to the corresponding settlement of in-service use needs, no longer give consideration to here.

In some embodiments, a transition curved surface 302 is provided between the groove bottom of the avoiding groove 301 and the outer peripheral wall of the switching piece 300. It can be understood that, as shown in fig. 7 and 8, a transition curved surface 302 is provided between the bottom of the avoiding groove 301 and the outer peripheral wall of the switching member 300, so that when the switching member 300 rotates, the displacement of the rod part 220 between the avoiding groove 301 and the outer peripheral wall of the switching member 300 can realize a smooth transition, and the stability and reliability of pushing the rod part 220 can be improved, which is convenient for use. In practical applications, the specific structure of the transition curved surface 302 may be changed according to practical applications, and the transition curved surface 302 corresponding to each avoiding groove 301 may also be different, which is not limited herein.

In some embodiments, the switch 300 is rotatably disposed in the main channel 101. It can be understood that, as shown in fig. 4 and 6, the switching member 300 is rotatably disposed in the main channel 101, and the connection structure thereof is relatively simple, so as to simplify the structure of the shunt tube 100, facilitate the manufacturing process thereof, and facilitate the production and application thereof.

In practical application, the switching element 300 may be rotatably disposed outside the shunt tube 100, and the rod 220 needs to be correspondingly disposed to extend out of the shunt tube 100, so that the outer peripheral wall of the switching element 300 pushes against the shunt tube 100, or a channel for accommodating the switching element 300 may be additionally disposed in the shunt tube 100, which may be specifically set according to actual needs, and those skilled in the art should understand that the channel may be correspondingly set.

In some embodiments, a driver 400 is connected to the switch 300, and the driver 400 can drive the switch 300 to rotate. It can be understood that, as shown in fig. 1, fig. 2 and fig. 4, the driver 400 is provided to drive the switching member 300 to rotate, so that the rotation angle of the switching member 300 can be accurately controlled in an electric control manner, the reliability of the use of the switching member is improved, the possibility of failure caused by manual misoperation is reduced, and the switching member is convenient to use. In practical applications, the driver 400 may be a servo motor or a stepping motor, and may be set according to actual needs, and those skilled in the art should understand that the driver can be set accordingly.

In some embodiments, the piston member 200 is connected to the elastic member 500, and the plug portion 210 can be blocked by the elastic member 500 from the first communication port 103. It can be understood that, as shown in fig. 2, 3, 4 and 5, the upper end of the piston member 200 is connected with an elastic member 500, the plug portion 210 is blocked at the first communication port 103 by the elastic member 500, and when the switching member 300 drives the piston member 200 to move upwards, the elastic member 500 is compressed, the first communication port 103 is opened, and the corresponding output channel 102 is communicated with the main channel 101; after the switching member 300 is rotated to reset, under the action of the elastic member 500, the rod portion 220 partially extends into the avoiding groove 301, and the plug portion 210 is plugged in the first communication hole 103 again, so that the piston member 200 is reset conveniently, and the switching member is simple in structure and convenient to use.

In practical applications, the piston member 200 may also be moved by a magnetic attraction structure, and may be set according to practical needs, which can be understood by those skilled in the art.

In some embodiments, the shunt tube 100 is further provided with an input channel 104 and a solenoid valve channel 105, the input channel 104 is communicated with the main channel 101 through the solenoid valve channel 105, a second communication port 106 is arranged between the solenoid valve channel 105 and the main channel 101, and the shunt tube 100 is connected with a solenoid valve 110 capable of blocking the second communication port 106.

It can be understood that, as shown in fig. 1, fig. 2 and fig. 6, when in use, the electromagnetic valve 110 may be connected to a thermocouple or other detection member of the burner, gas is input from the input channel 104 and is delivered to the electromagnetic valve channel 105, the opening and closing of the second communication port 106 is controlled by the electromagnetic valve 110, and when a flameout or other fault of the burner is detected, the second communication port 106 is closed by the electromagnetic valve 110, so as to disconnect the gas input of the main channel 101, thereby implementing a flameout protection or fault protection function and improving the safety in use.

In practical applications, the electromagnetic valve 110 may be a self-priming electromagnetic valve, which controls the electromagnetic valve 110 to act in an electrically controlled manner, or the electromagnetic valve 110 may be a top-opening electromagnetic valve, which opens the second communication port 106 by providing a corresponding top-opening structure on the switching member 300 to push the electromagnetic valve 110, and the specific type of the electromagnetic valve 110 may be selected according to actual needs, and the specific configuration thereof is known to those skilled in the art, and therefore will not be described in detail herein.

In some embodiments, the shunt tube 100 is provided with a pressure sensing channel 107 in communication with the main channel 101. It can be understood that, as shown in fig. 1 and fig. 2, the pressure measuring channel 107 communicated with the main channel 101 is arranged on the flow dividing pipe 100, the pressure measuring channel 107 is detachably connected with a plugging member 130 capable of plugging the pressure measuring channel 107, when the pressure measuring channel 107 is used, the plugging member 130 is detachable and connected with a pressure measuring assembly, and the gas pressure of the main channel 101 is detected to obtain the gas pressure condition of the main channel 101, so that other components can conveniently act according to the pressure condition, and the use reliability and the safety are improved.

In practical application, the pressure measuring channel 107 may be set according to practical needs, and may be directly connected to a pressure measuring module, or may be detached from the plugging member 130 and connected to the pressure measuring module for use according to needs, which is not limited herein.

The water heater according to the second aspect embodiment of the utility model comprises the multi-gear diversion device according to the first aspect embodiment of the utility model.

According to the water heater provided by the embodiment of the utility model, by adopting the multi-gear flow dividing device, the number of the output channels 102 for outputting gas can be controlled, the gas on-off control of a single output channel 102 and the increasing and decreasing change of the number of the output channels 102 for outputting gas are realized, so that the burner can realize the gradual fire power regulation, and the use requirements of different users can be better met.

Since other constructions of the water heater of the embodiments of the present invention are known to those of ordinary skill in the art, they will not be described in detail herein.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A multiple gear splitting device, comprising:

a shunt tube (100), the shunt tube (100) being provided with a main channel (101) and a plurality of output channels (102) communicating with the main channel (101);

a plurality of piston members (200) connected to the shunt tube (100) and provided corresponding to the output passages (102), the plurality of piston members (200) respectively correspond to the plurality of output passages (102) one by one, and each piston member (200) can disconnect the communication between the corresponding output passage (102) and the main passage (101);

a switch (300) connected to the shunt tube (100), the switch (300) being capable of actuating the piston member (200) to move and of varying the number of piston members (200) actuated to open communication between a corresponding number of output channels (102) and the main channel (101).

2. The multiple-gear splitting device according to claim 1,

a plurality of the output channels (102) are arranged at intervals along the axial direction of the main channel (101), a first communication port (103) is arranged between the main channel (101) and the output channel (102), the piston piece (200) is connected with the output channel (102) in a sliding way and is provided with a plug part (210) capable of blocking the first communication port (103), the switching piece (300) is of a rotating shaft structure and is rotationally connected with the shunt pipe (100), a rod part (220) corresponding to the switching part (300) is arranged on the piston part (200), the peripheral wall of the switching piece (300) can be abutted against the rod part (220) and can be rotated along with the switching piece (300) to be abutted against and push the rod part (220), so that the piston member (200) can be moved relative to the first communication port (103) and the plug portion (210) can be released from blocking the first communication port (103).

3. The multiple-gear splitting device according to claim 2,

switch and be provided with a plurality of groove of dodging (301) on (300), it is a plurality of dodge groove (301) and follow the axial interval of switching (300) sets up and with a plurality of pole portion (220) one-to-one, dodge groove (301) and encircle the circumference of switching (300) sets up and is the arc wall structure, and is individual the radian that dodges groove (301) and corresponds is followed the axial of switching (300) is progressively increased, dodge groove (301) and can supply to correspond pole portion (220) dodge and stretch into.

4. The multiple-gear splitting device according to claim 3,

transition curved surfaces (302) are arranged between the groove bottom of the avoiding groove (301) and the peripheral wall of the switching piece (300).

5. The multiple-gear splitting device according to claim 2,

the switching piece (300) is rotatably arranged in the main channel (101).

6. The multiple-gear splitting device according to claim 2,

a driver (400) is connected with the switching piece (300), and the driver (400) can drive the switching piece (300) to rotate.

7. The multiple-gear splitting device according to claim 2,

an elastic member (500) is connected to the piston member (200), and the plug portion (210) can be closed to the first communication port (103) by the elastic member (500).

8. The multiple-gear splitting device according to claim 1,

shunt tubes (100) still are provided with input channel (104) and solenoid valve passageway (105), input channel (104) pass through solenoid valve passageway (105) with main entrance (101) intercommunication, solenoid valve passageway (105) with be equipped with second intercommunication mouth (106) between main entrance (101), shunt tubes (100) are connected with and can block solenoid valve (110) of second intercommunication mouth (106).

9. The multiple-gear splitting device according to claim 1,

and a pressure measuring channel (107) communicated with the main channel (101) is arranged on the shunt pipe (100).

10. A water heater comprising a multi-step flow splitting device according to any one of claims 1 to 9.

Images