CN112253829B

CN112253829B - Water flow stabilizing valve and gas water heater using same

Info

Publication number: CN112253829B
Application number: CN202011055253.0A
Authority: CN
Inventors: 王世平; 原世超; 诸永定; 茅忠群
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-10-26
Anticipated expiration: 2040-09-29
Also published as: CN112253829A

Abstract

The invention relates to a water flow stabilizing valve and a gas water heater using the same, wherein the water flow stabilizing valve comprises a pipe body, the lower part of the pipe body is provided with a water inlet, and the upper part of the pipe body is provided with a water outlet; the valve pipe can be arranged in the pipe body in a vertically moving mode, a first water passing port and a second water passing port which penetrate through the wall thickness of the valve pipe are formed in the side wall of the valve pipe, and the first water passing port and the second water passing port extend along the axial direction of the valve pipe; the partition plate is arranged in the valve pipe, and the first water passing port, the partition plate and the second water passing port are sequentially arranged along the axial direction of the valve pipe; the valve core can partially shield the first water passing port and can move upwards to be abutted against the valve pipe; the adjusting plate is arranged at the second water passing port and can change the flow area of the second water passing port under the condition that the valve pipe moves relative to the adjusting plate; the first elastic piece acts on the valve core to enable the valve core to always keep the trend of moving downwards; and the second elastic piece acts on the valve pipe to enable the valve pipe to always keep the trend of moving downwards. The flow stabilizing valve can realize two-stage flow stabilization.

Description

Water flow stabilizing valve and gas water heater using same

Technical Field

The invention relates to a flow stabilizer, in particular to a water flow stabilizing valve and a gas water heater using the same.

Background

The water flow stabilizing device is arranged in the water channel system of the gas water heater, so that the problem of fluctuation of hot water outlet temperature caused by water flow fluctuation can be effectively solved, and the experience of a user in using the gas water heater is improved. 5.2.2.4.6 requirement in GB6932-2015 household gas instantaneous water heater: the waterway system is provided with a flow stabilizing or flow adjusting device. Along with the continuous increase of high-rise buildings, the water pressure condition of a user's home is more and more complicated, and the water pressure of some districts is large, and the water pressure fluctuation is large, so that certain trouble is brought to the use of the existing gas water heater. The developed flow stabilizer convenient to adjust can effectively solve the problem that the outlet water temperature of the gas water heater used in different water pressure areas fluctuates greatly.

In order to solve the problems, a water flow stabilizer is disclosed in the utility model with the patent number CN201621097774.1 (the publication number is CN 206130229U), which comprises a shell with an inner shell water channel, and an upper seat, a positioning seat, a valve core, a spring and a lower seat which are respectively arranged in the shell water channel, wherein the valve core is provided with a valve core water channel, the valve core passes through the positioning seat and is hung on the top of the positioning seat, the positioning seat is fixed on the upper seat, the upper seat is fixed in the shell water channel and is in sealed fit with the inner wall of the shell water channel, the upper seat is provided with an upper seat limiting block and an upper seat water outlet, the upper seat limiting block is transversely arranged on the moving path of the valve core and is arranged opposite to the valve core water channel water outlet, the lower seat is fixed on the lower part of the valve core, and the spring is sleeved on the periphery of the valve core and two ends of the spring are respectively abutted against the upper seat and the lower seat. This patent adopts a spring, and the reciprocating motion of cooperation hydraulic control valve core realizes the stability of discharge.

However, the patent can only realize primary flow stabilization through the movement of the valve core, the flow stabilization pressure range of the patent is limited, and if the pressure reaches the flow stabilization limit of the flow stabilization device, the valve core can not move continuously any more, and the flow stabilization device can not play a role in flow stabilization continuously.

In addition, since the lower seat (corresponding to a first plate hereinafter) is movable relative to the housing (corresponding to a tube hereinafter), a gap is provided between an outer peripheral wall of the lower seat and an inner peripheral wall of the housing, so that water flows through the gap between the outer peripheral wall of the lower seat and the inner peripheral wall of the housing, which may result in insufficient accuracy of the flow stabilization.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a water flow stabilizing valve capable of realizing two-stage flow stabilization aiming at the current situation of the prior art.

The second technical problem to be solved by the invention is to provide a water flow stabilizing valve which can realize two-stage flow stabilization and has few related parts aiming at the current situation of the prior art.

The third technical problem to be solved by the invention is to provide a gas water heater using the water flow stabilizing valve, aiming at the current situation of the prior art.

The technical solution adopted by the present invention to solve the first and second technical problems is:

a water flow stabilizing valve comprises

The water inlet is formed in the lower portion of the pipe body, and the water outlet is formed in the upper portion of the pipe body;

it is characterized by also comprising

The valve pipe is arranged in the pipe body in a vertically movable mode, an upper port of the valve pipe is communicated with the water outlet in a corresponding fluid mode, a lower port of the valve pipe is communicated with the water inlet in a fluid mode, a first water passing port and a second water passing port which penetrate through the wall thickness of the valve pipe are formed in the side wall of the valve pipe, the first water passing port and the second water passing port extend along the axial direction of the valve pipe, the first water passing port is located below the second water passing port, and the lower port and the upper port of the valve pipe are communicated with each other in a fluid mode through the first water passing port and the second water passing port;

the valve core can move upwards relative to the pipe body under the action of water flow, can partially shield the first water passing port at the first water passing port, and can move upwards to be abutted against the valve pipe;

the adjusting plate is arranged at the second water passing opening and can change the flow area of the second water passing opening under the condition that the valve pipe moves relative to the adjusting plate;

the first elastic piece acts on the valve core to enable the valve core to always keep the trend of moving downwards;

and the second elastic piece acts on the valve pipe to enable the valve pipe to always keep the trend of moving downwards.

In order to enable the adjusting plate to change the flow area of the second water passing opening under the state that the valve pipe moves relative to the adjusting plate, the adjusting plate is transversely arranged in the pipe body and is positioned on the moving path of the second water passing opening, the upper end of the valve pipe can movably penetrate through a corresponding hole of the adjusting plate (the corresponding hole on the adjusting plate is an inserting hole on the adjusting plate hereinafter), and a third water passing opening which is communicated with the upper end opening of the valve pipe in a fluid mode is formed in the adjusting plate. Therefore, along with the movement of the valve pipe relative to the adjusting plate, the area enclosed between the second water passing opening and the adjusting plate is continuously changed, when the water pressure is increased, the valve pipe is pushed by the valve core to move upwards, the area enclosed between the lower part of the second water passing opening and the adjusting plate is reduced, the water flow entering the valve pipe from the second water passing opening is reduced, and the problems of water pressure increase and water flow increase are solved.

In order to facilitate the valve pipe to movably penetrate through the adjusting plate, the second water passing openings are multiple and extend downwards from the top of the valve pipe, the side walls, located on two sides of the second water passing openings, of the valve pipe form inserting blocks, and inserting holes for the inserting blocks to insert are formed in the adjusting plate. For the mode that the upper end and the lower end of the second water passing opening are closed, the structure with the opening at the upper end of the second water passing opening is convenient for matching the valve pipe with the adjusting plate.

Because the valve pipe is assembled on the limiting plate from bottom to top under the limitation of the limiting plate, the adjusting plate can be detachably arranged on the top of the pipe body in order to facilitate the installation of the valve pipe. After the valve pipe is assembled on the limiting plate, the adjusting plate is assembled on the pipe body.

Install on the body in order to realize that the regulating plate can be dismantled, be equipped with the locating piece on the regulating plate, the constant head tank of L type is seted up to the perisporium of body, the constant head tank includes integrative vertical section and the horizontal section that links to each other, vertical section is from the top downwardly extending of body, the lower extreme of horizontal section and vertical section links to each other and extends along the circumference of body, the locating piece can move and can the axial spacing in horizontal section relative to the constant head tank. And arranging the positioning block in the positioning groove from the vertical section and rotating the positioning block to the transverse section, so that the assembling of the adjusting plate is realized.

In order to limit the downward movement stroke of the valve pipe, a limiting plate located below the adjusting plate is transversely arranged in the pipe body, the valve pipe movably penetrates through the limiting plate, a protruding block capable of being placed on the limiting plate is arranged on the valve pipe, the first water passing port is located below the limiting plate, the second water passing port is located above the limiting plate, and a water passing hole is formed in the limiting plate. When the lug rests on the limit plate, the valve tube moves to the lower limit position.

The valve core can have various structural forms, the structure is simple, the valve core comprises a tubular part and a first plate body extending radially from the outer peripheral wall of the tubular part, the tubular part is movably inserted at the lower part of the valve pipe and can partially shield the first water passing hole, the first plate body is positioned below the tubular part, and the outer peripheral wall of the first plate body is adjacent to the inner peripheral wall of the pipe body. The lifting device comprises a first plate body, a tubular portion, a water inlet, a water outlet, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe and a water outlet pipe.

In order to improve the stationary flow precision, be equipped with the sealing washer between the internal perisporium of periphery wall and the body of plate body, be equipped with the round ring channel along its circumference on the sealing washer, the longitudinal section of sealing washer is the type of falling U. A sealing ring is arranged between the first plate body and the pipe body, and plays a role in sealing, so that water is reduced to flow through a gap between the first plate body and the pipe body, and the precision of the flow stabilization of the flow stabilizing valve is improved; in addition, the annular groove is formed in the sealing ring, so that the sealing ring has large deformation, the friction force between the sealing ring and the pipe body is small, and the first plate body can move smoothly relative to the pipe body.

In order to enable the valve core to move upwards to the extreme position and then push the valve pipe to move upwards, and therefore the flow area of the second water passing opening is reduced, a second plate body is formed on the outer peripheral wall of the valve pipe in the radial direction and located above the first plate body and capable of abutting against the first plate body. When the first plate body and the second plate body are abutted, the valve core continuously moves upwards to push the valve pipe to move upwards.

In order to limit the downward movement stroke of the valve core and prevent the valve core from moving out of the pipe body, a limiting block which is positioned below the first plate body and can be used for placing the first plate body on the limiting block is arranged on the inner peripheral wall of the pipe body, and a distance is reserved between the first plate body and the second plate body when the first plate body is placed on the limiting block. When the first plate body is placed on the limiting block, the valve core cannot move downwards continuously.

In order to enable water to flow to the upper port of the valve pipe after entering from the lower port of the valve pipe through the first water passing port and the second water passing port, a transverse partition plate is arranged in the valve pipe, the first water passing port, the transverse partition plate and the second water passing port are sequentially arranged along the axial direction of the valve pipe, and the arrangement of the partition plate prevents water from directly flowing to the upper port of the valve pipe from the lower port of the valve pipe.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the utility model provides an use gas heater of above-mentioned discharge steady flow valve which characterized in that: the water inlet pipe is communicated with the water inlet side of the heat exchanger in a fluid mode, and the water outlet of the pipe body is communicated with the water inlet end of the water inlet pipe in a fluid mode.

Compared with the prior art, the invention has the advantages that: 1. according to the invention, the valve pipe is provided with the first water passing port and the second water passing port, when the water pressure is increased, the valve core moves relative to the first water passing port so as to change the flow area of the first water passing port, thus the problem of water flow increase caused by water pressure increase is solved, and primary steady flow is realized; when the water pressure continues to increase, the valve core reaches the steady flow limit, the valve core can push the valve pipe to continue to move upwards at the moment, the flow area of the second water passing opening is changed through the adjusting plate, and therefore secondary steady flow is achieved, the steady flow range of the flow stabilizing valve is large, and the adaptability is high; 2. the valve core pushes the valve pipe to move upwards to adjust the flow area of the second water passing opening, so that other parts for pushing the valve pipe to move do not need to be arranged, the valve core has multiple purposes, and the related parts are few; when the valve core reaches the steady flow limit, the water pressure is continuously increased, the valve core can push the valve pipe to move, and the sensitivity of steady flow is stronger.

Drawings

FIG. 1 is a schematic structural diagram of a water flow stabilizing valve according to an embodiment of the invention;

FIG. 2 is a cross-sectional view of FIG. 1 (initial state);

FIG. 3 is a cross-sectional view of FIG. 1 (with the spool moved to an upper limit position);

FIG. 4 is a cross-sectional view of FIG. 1 (valve tube moved up);

FIG. 5 is an exploded view of FIG. 1;

FIG. 6 is an exploded view in another orientation of FIG. 1;

FIG. 7 is an exploded view of FIG. 2;

FIG. 8 is a schematic structural view of the valve tube of FIG. 6;

fig. 9 is a partial cross-sectional view of a seal ring disposed between the first plate and the valve body;

FIG. 10 is a schematic view of the water flow direction of FIG. 2;

FIG. 11 is a schematic structural view of a gas water heater employing the water flow stabilizing valve of FIG. 1;

FIG. 12 is a flow stabilizing curve of the valve cartridge of FIG. 1;

FIG. 13 is a flow stabilizing curve for the valve tube of FIG. 1;

FIG. 14 is a plot of the steady flow of the ensemble of FIG. 1.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 11, the gas water heater of the preferred embodiment includes a heat exchanger 70, a water inlet pipe 71, a water outlet pipe 72, a water flow stabilizing valve a and a water inlet joint 73, wherein the water inlet side of the heat exchanger 70 is communicated with the water inlet pipe 71, and the water outlet side of the heat exchanger 70 is communicated with the water outlet pipe 72.

The water flow stabilizing valve comprises a pipe body 1, a valve pipe 2, a valve core 3, an adjusting plate 4 and the like, wherein the lower end of the pipe body 1 is open to form a water inlet 11, a water outlet 12 is formed in the top wall of the pipe body 1, the water inlet 11 in the pipe body 1 is in fluid communication with a water inlet joint 73, and the water outlet 12 in the pipe body 1 is in fluid communication with the water inlet end of a water inlet pipe 71. The water inlet connector 73 may be constructed in accordance with the prior art, as shown in CN 202010011140.4.

As shown in fig. 2, a limiting plate 6 is transversely disposed in the tube body 1 below the adjusting plate 4, the valve tube 2 movably passes through the limiting plate 6, a protrusion 26 capable of resting on the limiting plate 6 is disposed on the outer peripheral wall of the valve tube 2, the valve tube 2 can move up and down relative to the limiting plate 6, and when the protrusion 26 rests on the limiting plate 6, the valve tube 2 cannot move downward (i.e., the valve tube 2 moves to the lower limit position).

As shown in fig. 2 and 8, the upper port 21 of the valve tube 2 is in fluid communication with the water outlet 12, the lower port 22 of the valve tube 2 is in fluid communication with the water inlet 11, the sidewall of the valve tube 2 is provided with a first water passing port 23 and a second water passing port 24 which penetrate through the wall thickness of the valve tube, the first water passing port 23 and the second water passing port 24 both extend along the axial direction of the valve tube 2, the first water passing port 23 is located below the limiting plate 6, the second water passing port 24 is located above the limiting plate 6 (i.e. the first water passing port 23 is located below the second water passing port 24), and the limiting plate 6 is provided with a water passing hole 61.

As shown in fig. 7, the lower port 22 and the upper port 21 of the valve tube 2 are in fluid communication with each other through the first water passing port 23 and the second water passing port 24, in this embodiment, a diaphragm plate 28 is disposed in the valve tube 2, and the first water passing port 23, the diaphragm plate 28 and the second water passing port 24 are sequentially disposed along the axial direction of the valve tube 2, so that water entering from the lower port 22 of the valve tube 2 must sequentially pass through the first water passing port 23 and the second water passing port 24 to flow out from the upper port 21 of the valve tube 2 due to the blocking of the diaphragm plate 28.

The valve core 3 can move upwards relative to the pipe body 1 under the action of water flow, and the valve core 3 is positioned at the first water passing port 23 and can partially shield the first water passing port 23, as shown in fig. 2, 6 and 7, in the embodiment, the valve core 3 comprises a tubular part 31 and a first plate body 32 extending along the radial direction of the tubular part 31, the tubular part 31 is movably inserted at the lower part of the valve pipe 2 and can partially shield the first water passing port 23, the first plate body 32 is positioned below the tubular part 31, and the outer peripheral wall of the first plate body 32 is adjacent to the inner peripheral wall of the pipe body 1. The stressed area of the first plate body 32 is large, when the water pressure is increased, the first plate body 32 moves upwards, the tubular part 31 moves upwards along with the first plate body to shield the first water passing opening 23 partially, so that the flow area of the first water passing opening 23 is reduced, and the water flow increase caused by the increase of the water pressure is avoided.

The valve core 3 always keeps a downward movement trend under the action of the first elastic member 51, in this embodiment, the first elastic member 51 is a spring, and two ends of the spring respectively abut against the first plate 32 and the wall surface in the pipe body 1. The inner peripheral wall of the pipe body 1 is provided with a limiting block 15 which is positioned below the first plate body 32 and can be used for placing the first plate body 32 thereon, and when the first plate body 32 is placed on the limiting block 15, the valve core 3 moves to a lower limit position and cannot move downwards continuously.

As shown in fig. 9, a sealing ring 321 may be disposed between the outer circumferential wall of the first plate 32 and the inner circumferential wall of the tube 1, and the sealing ring 321 plays a role in sealing, so as to improve the accuracy of the flow stabilization of the flow stabilizing valve; a circle of annular groove 3211 is formed in the sealing ring 321 along the circumferential direction, the longitudinal section of the sealing ring 321 is in an inverted U shape to form the annular groove 3211, and the end wall of the sealing ring 321 contacts with the inner wall of the pipe body 1. The annular groove 3211 allows the sealing ring 321 to have a large deformation amount and a small friction force with the pipe body 1, so as to ensure that the first plate 32 can smoothly move relative to the pipe body 1, thereby driving the tubular portion 31 to move, so as to adjust the water flow and achieve the purpose of stabilizing the flow.

As shown in fig. 2 and 8, the second plate 27 is radially formed on the outer peripheral wall of the valve tube 2, and the first plate 32 is spaced from the second plate 27 in a state where the first plate 32 is resting on the stopper 15. The second plate 27 is located above the first plate 32, and when the first plate 32 moves upward to abut against the second plate 27, the valve core 3 continues to move upward to push the valve tube 2 to move upward. The pipe body 1 is provided with a horizontal adjusting plate 4, the adjusting plate 4 is positioned on the moving path of the second water passing port 24, the valve pipe 2 movably passes through the adjusting plate 4, the adjusting plate 4 is provided with a third water passing port 40 which is in fluid communication with the upper port 21 of the valve pipe 2, and when the valve pipe 2 moves up and down relative to the adjusting plate 4, the flow area of the second water passing port 24 is changed. The third water distributing opening 40 may be the same as the water outlet 12, or the water outlet 12 may be located downstream of the third water distributing opening 40.

Be equipped with the vertical limiting plate 10 that is located the second plate body 27 top in the body 1, when the lower terminal surface of second plate body 27 and limiting plate 10 offseted, valve pipe 2 removed to the extreme position.

As shown in fig. 2 and 7, in the present embodiment, the adjusting plate 4 is detachably mounted on the top of the pipe body 1, the second water passing opening 24 has a plurality of second water passing openings 24, the second water passing openings each extend downward from the top of the valve pipe 2, the side walls of the valve pipe 2 located at both sides of the second water passing openings 24 form insertion blocks 25, and the adjusting plate 4 is provided with insertion holes 41 for the insertion of the insertion blocks 25. Therefore, along with the movement of the valve pipe 2 relative to the adjusting plate 4, the area enclosed between the second water passing port 24 and the adjusting plate 4 is continuously changed, when the water pressure is increased, the valve pipe 2 is pushed by the valve core 3 to move upwards, the area enclosed between the lower part of the second water passing port 24 and the adjusting plate 4 is reduced, the water flow entering the valve pipe 2 from the second water passing port 24 is reduced, and the problems of water pressure increase and water flow increase are solved.

The valve tube 2 always keeps the downward movement trend under the action of the second elastic member 52, in this embodiment, the second elastic member 52 is a spring, and two ends of the spring respectively abut against the limiting plate 6 and the second plate 27.

The adjusting plate 4 is provided with a positioning block 42, the peripheral wall of the tube body 1 is provided with an L-shaped positioning groove, the positioning groove comprises a vertical section 13 and a horizontal section 14 which are integrally connected, the vertical section 13 extends downwards from the top of the tube body 1, the horizontal section 14 is connected with the lower end of the vertical section 13, the horizontal section 14 extends along the circumferential direction of the tube body 1, and the positioning block 42 can move relative to the positioning groove and can be axially limited in the horizontal section 14. The positioning block 42 is placed in the positioning groove from the vertical section 13 and rotated into the transverse section 14, so that the adjustment plate 4 is assembled.

The working process of the water flow stabilizing valve of the embodiment is as follows:

the components are shown in FIG. 2 under normal conditions;

when water flows into the water inlet 11, the water flow passing through the whole flow stabilizing valve is increased along with the increase of the water pressure. When the water pressure reaches the action pressure of the valve core 3, the water pressure is increased continuously to compress the first plate body 32 to move upwards, the tubular part 31 closes the opening of the first water passing port 23, and the water flow passing through the whole flow stabilizing valve is kept unchanged, as shown in fig. 3.

As shown in FIG. 12, the valve core 3 has a steady flow range, such as that shown by a broken line diagram, which can ensure that the water flow passing through the valve core 3 is steady and constant under the water pressure of 0.1-0.3 MPa. When the water pressure continues to increase to 0.3MPa, the first plate 32 is compressed to the position of fig. 3 (the first plate 32 abuts against the second plate 27), which is the limit position of the valve element 3.

When the water pressure continues to increase, as shown in fig. 4, the valve tube 2 starts to operate, and the first plate 32 pushes the second plate 27 to move upward, thereby closing the opening of the second water passing port 24 and suppressing an increase in the water flow rate. As shown in fig. 12 and 13, the initial steady flow point water pressure of the second valve spool 3 is higher than that of the first valve spool 2, and as shown in fig. 14, the steady flow range of the steady flow valve of the present embodiment is larger than that of the primary steady flow.

Similarly, when the water pressure is reduced, the valve pipe 2 moves downwards first to increase the opening degree of the second water passing port 24, the water pressure is reduced continuously, and the valve core 3 moves downwards to increase the opening degree of the first water passing port 23, so that the water flow is ensured not to be reduced.

The "flow area" mentioned above refers to the area of the corresponding water passing port through which water can flow, and the larger the flow area is, the larger the water flow is, and the smaller the flow area is, the smaller the water flow is.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims

1. A water flow stabilizing valve comprises

The water-saving device comprises a pipe body (1), wherein a water inlet (11) is formed in the lower part of the pipe body (1), and a water outlet (12) is formed in the upper part of the pipe body;

it is characterized by also comprising

The valve pipe (2) is arranged in the pipe body (1) in a vertically movable mode, an upper end opening (21) of the valve pipe (2) is communicated with a water outlet (12) in a corresponding fluid mode, a lower end opening (22) of the valve pipe (2) is communicated with a water inlet (11) in a fluid mode, a first water passing opening (23) and a second water passing opening (24) which penetrate through the wall thickness of the valve pipe are formed in the side wall of the valve pipe (2), the first water passing opening (23) and the second water passing opening (24) extend along the axial direction of the valve pipe (2), the first water passing opening (23) is located below the second water passing opening (24), and the lower end opening (22) and the upper end opening (21) of the valve pipe (2) are communicated with the fluid of the second water passing opening (24) through the first water passing opening (23);

the valve core (3) can move upwards relative to the pipe body (1) under the action of water flow, the first water passing port (23) can be partially shielded at the first water passing port (23), and the valve core (3) can move upwards to be abutted against the valve pipe (2);

the adjusting plate (4) is arranged at the second water passing opening (24), and the flow area of the second water passing opening (24) can be changed by the adjusting plate (4) under the condition that the valve pipe (2) moves relative to the adjusting plate;

the first elastic piece (51) acts on the valve core (3) to enable the valve core (3) to always keep the trend of moving downwards;

and the second elastic piece (52) acts on the valve pipe (2) to enable the valve pipe (2) to always keep the trend of moving downwards.

2. The water flow stabilizing valve according to claim 1, wherein: the adjusting plate (4) is transversely arranged in the pipe body (1) and is positioned on a moving path of the second water passing port (24), the upper end of the valve pipe (2) can movably penetrate through a corresponding hole in the adjusting plate (4), and the adjusting plate (4) is provided with a third water passing port (40) which is in fluid communication with the upper end port (21) of the valve pipe (2).

3. The water flow stabilizing valve according to claim 2, wherein: the second water passing openings (24) are multiple and extend downwards from the tops of the valve pipes (2), the side walls, located on two sides of the second water passing openings (24), of the valve pipes (2) form inserting blocks (25), and inserting holes (41) for the inserting blocks (25) to insert are formed in the adjusting plate (4).

4. The water flow stabilizing valve according to claim 3, wherein: the adjusting plate (4) can be detachably arranged at the top of the pipe body (1).

5. The water flow stabilizing valve according to claim 4, wherein: be equipped with locating piece (42) on regulating plate (4), the constant head tank of L type is seted up to the perisporium of body (1), the constant head tank includes integrative vertical section (13) and horizontal section (14) that link to each other, vertical section (13) are from the top downwardly extending of body (1), horizontal section (14) link to each other with the lower extreme of vertical section (13) and extend along the circumference of body (1), locating piece (42) can move and can be spacing in horizontal section (14) by axial relative constant head tank.

6. The water flow stabilizing valve according to claim 2, wherein: limiting plate (6) below adjusting plate (4) is transversely equipped with in body (1), limiting plate (6) is passed in valve pipe (2) activity, and is equipped with on valve pipe (2) and can shelve lug (26) on limiting plate (6), and first mouth of a river (23) of crossing is located the below of limiting plate (6), and mouth of a river (24) are located the top of limiting plate (6) are crossed to the second, water hole (61) have been seted up on limiting plate (6).

7. The water flow stabilizing valve according to any one of claims 1 to 6, wherein: the valve core (3) comprises a tubular part (31) and a first plate body (32) extending from the outer peripheral wall of the tubular part (31) in the radial direction, the tubular part (31) is movably inserted at the lower part of the valve pipe (2) and can partially shield the first water passing port (23), the first plate body (32) is located below the tubular part (31), and the outer peripheral wall of the first plate body (32) is adjacent to the inner peripheral wall of the pipe body (1).

8. The water flow stabilizing valve according to claim 7, wherein: be equipped with sealing washer (321) between the periphery wall of first plate body (32) and the internal perisporium of body (1), be equipped with round annular groove (3211) along its circumference on sealing washer (321), the longitudinal section of sealing washer (321) is the type of falling U.

9. The water flow stabilizing valve according to claim 7, wherein: the periphery wall of valve pipe (2) is gone up along radial shaping and is had second plate body (27), second plate body (27) are located the top of first plate body (32) and can offset with first plate body (32).

10. The water flow stabilizing valve according to claim 9, wherein: the limiting block (15) capable of allowing the first plate body (32) to be placed on the limiting block is arranged on the inner peripheral wall of the pipe body (1), and a distance is reserved between the first plate body (32) and the second plate body (27) when the first plate body (32) is placed on the limiting block (15).

11. The water flow stabilizing valve according to any one of claims 1 to 6, wherein: a transverse partition plate (28) is arranged in the valve pipe (2), and the first water passing port (23), the transverse partition plate (28) and the second water passing port (24) are sequentially arranged along the axial direction of the valve pipe (2).

12. A gas water heater applying the water flow stabilizing valve as claimed in any one of claims 1 to 11, is characterized in that: the water pipe is characterized by further comprising a heat exchanger (70) and a water inlet pipe (71) communicated with the water inlet side of the heat exchanger (70) in a fluid mode, and the water outlet (12) of the pipe body (1) is communicated with the water inlet end of the water inlet pipe (71) in a fluid mode.