CN111678258B - Water way structure and gas water heater water supply system applying same - Google Patents
Water way structure and gas water heater water supply system applying same Download PDFInfo
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- CN111678258B CN111678258B CN202010810777.XA CN202010810777A CN111678258B CN 111678258 B CN111678258 B CN 111678258B CN 202010810777 A CN202010810777 A CN 202010810777A CN 111678258 B CN111678258 B CN 111678258B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
The invention relates to a waterway structure and a water supply system of a gas water heater using the same, wherein the waterway structure comprises a pipe body, the inside of the pipe body is divided into a hot water pipeline, a cold water pipeline and a middle pipeline communicated with the hot water pipeline and the cold water pipeline, the hot water pipeline is provided with a hot water inlet and a hot water outlet which are communicated by fluid, and the cold water pipeline is provided with a cold water inlet and a cold water outlet which are communicated by fluid; the check valve assembly comprises a plug which is movably arranged in the middle pipeline and only allows water in the hot water pipeline to flow into the cold water pipeline in a one-way mode; and the driving assembly is arranged in the cold water pipeline and connected with the plug, and drives the plug to be positioned at the position for blocking the hot water pipeline and the cold water pipeline under the state that the cold water outlet is opened so as to prevent the water heater from being started by mistake.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a water path structure and a gas water heater water supply system using the same.
Background
With the improvement of living standard, the zero-cold water gas water heater is more and more popular, and the zero-cold water gas water heater needs to preheat water in a pipeline to realize the function of instant heating and opening, and needs to form a closed circulation loop by a water pipe and the water heater for preheating. There are currently two schemes for implementing a circulation loop: one is to install a return pipe; the other type is that a four-way check valve is arranged at a water consumption point which is farthest from a water heater at a user's home, a tap water cooling water channel and a water outlet water channel of the water heater are connected into a closed pipeline, water in the closed pipeline is preheated through a circulating water pump arranged in the water heater, hot water in a tap pipeline opened by the user can flow out quickly, and waiting time is shortened. The first scheme needs to modify the water path of the user home, which is very troublesome; and the second kind scheme uses ordinary check valve can produce following problem, and many users' family water routes realize zero cold water and can only directly install the four-way check valve additional on original pipeline owing to not installing the return water pipeline, because pipeline resistance problem, can appear opening cold water tap and go out hot water and open cold water tap and cause the water heater self-starting problem, influence user experience.
In order to solve the problems of the second scheme, a chinese utility model patent with a patent number of cn201821351412.x (publication number of CN208859893U) discloses a water path connection device and a water heater system, wherein the water path connection device comprises a housing, a first pipe section, a second pipe section and a guide pipe section communicating the first pipe section and the second pipe section are formed in the housing, the housing is provided with a first water inlet and a first water outlet communicating the first pipe section, and the housing is further provided with a second water inlet and a second water outlet communicating the second pipe section; the one-way valve is positioned on the guide pipe section and is communicated in a one-way mode along the direction from the second pipe section to the first pipe section; the regulating valve is arranged in the first pipe section, is positioned between the one-way valve and the first water outlet, and is regulated to move in the shell to change the opening degree of the first water outlet, so that the pressure of water flow in the first pipe section can be regulated, and the water heater is prevented from being opened by mistake when a user uses the water heater system to use cold water.
As shown in the "one-way valve assembly and water heater" disclosed in the chinese patent application with patent number CN201910647650.8 (publication number CN110425739A), wherein the one-way valve component comprises a water inlet joint, a water outlet joint and a one-way valve, the one-way valve comprises a one-way valve fixed end, a one-way valve movable end and an elastic component, wherein one end of the fixed end of the one-way valve is arranged in the water outlet joint, the other end of the fixed end of the one-way valve is arranged in the water inlet joint and is fixedly connected with the water inlet joint, the movable end of the one-way valve is movably arranged in the water inlet joint and used for opening or closing the water inlet joint, the elastic component is abutted between the fixed end of the one-way valve and the movable end of the one-way valve, through the check valve stiff end with mutually supporting of check valve expansion end is in order to with water supply connector with go out water connector and switch on or break off, it can reduce the check valve phenomenon of opening by mistake to a certain extent.
No matter set up the aperture that the first delivery port (being cold water outlet) was adjusted to the governing valve to two above-mentioned patents, still block water supply connector (being hot water pipeline) and water connectors (being cold water pipeline) through the check valve expansion end, when can not guaranteeing to use cold water completely, the check valve can not be opened and cause the water heater mistake to start, only can reduce the probability that the check valve opened to a certain extent.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a waterway structure capable of blocking a hot water pipe and a cold water pipe when cold water is used, in view of the current state of the prior art.
The second technical problem to be solved by the present invention is to provide a waterway structure capable of rapidly blocking a hot water pipe and a cold water pipe when cold water is used, in view of the current situation of the prior art.
The third technical problem to be solved by the present invention is to provide a waterway structure capable of rapidly blocking a hot water pipe and a cold water pipe when hot water is used, in view of the current situation of the prior art.
The fourth technical problem to be solved by the present invention is to provide a water supply system for a gas water heater using the above waterway structure, which blocks a hot water pipe and a cold water pipe when cold water is used, in view of the current situation of the prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a waterway structure comprises
A pipe body, the interior of which is divided into a hot water pipe, a cold water pipe and an intermediate pipe communicating the hot water pipe and the cold water pipe, wherein the hot water pipe has a hot water inlet and a hot water outlet which are in fluid communication, and the cold water pipe has a cold water inlet and a cold water outlet which are in fluid communication;
the check valve assembly comprises a plug which is movably arranged in the middle pipeline and only allows water in the hot water pipeline to flow into the cold water pipeline in a one-way mode;
it is characterized by also comprising
And the driving assembly is arranged in the cold water pipeline and connected with the plug, and drives the plug to be positioned at the position for blocking the hot water pipeline and the cold water pipeline in the state that the cold water outlet is opened.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the drive assembly comprises
The turbine is arranged in the cold water outlet and can rotate relative to the cold water outlet, and the axis of the cold water outlet is parallel to or coincided with the axis of the middle pipeline;
and the first end of the screw is connected with the turbine, and the second end of the screw is in threaded connection with the plug.
In order to facilitate the connection between the plug and the screw rod, the plug is connected with the screw rod through a connecting rod, a slot facing the screw rod is formed in the connecting rod, the second end of the screw rod is inserted into the slot, and the second end of the screw rod and the slot are in threaded connection.
If the screw rod is screwed into the slot to an excessively deep depth, the screw rod and the connecting rod are locked, and a limiting part capable of abutting against the second end of the screw rod is arranged in the slot. When the second end of the screw rod is abutted to the limiting part, the screw rod can not be screwed into the slot any more, and the follow-up reverse rotation of the screw rod can be ensured.
The locating part can have multiple structural style, and preferably, the locating part is the spring, and one end links to each other with the diapire of slot, and the other end is towards the screw rod. The spring not only plays the effect of the screw in degree of depth of stop screw, can also prevent to interfere with the screw rod firmly, avoids haring the screw rod.
The technical scheme adopted by the invention for solving the third technical problem is as follows: in order to ensure that the movement of the plug is flexible and quick, the hot water pipeline and the cold water pipeline can be plugged at the moment of opening the hot water outlet, the connecting rod comprises two connecting rods, one connecting rod is connected with the plug, the other connecting rod is provided with the slot, the two connecting rods are inserted and assembled and can move axially relatively, and a limiting structure for preventing the two connecting rods from being disconnected is arranged between the two connecting rods. When the hot water outlet is opened, the plug moves towards the direction of the hot water pipeline under the action of the water pressure of the cold water pipeline side, the plug is connected with one of the connecting rods only, and the two connecting rods can move axially, so that the plug can move rapidly, and the plug is in an integral mode relative to the connecting rods, and the moving resistance of the plug is small.
The limiting structure can have various structural forms, preferably, an insertion hole is formed in the end portion of one connecting rod, an insertion portion capable of being inserted into the insertion hole is formed in the end portion of the other connecting rod, the insertion portion can move axially along the insertion hole, a blocking wall is formed at the opening of the insertion hole in the radial inward direction, the cross section of the insertion portion is T-shaped and can abut against the blocking wall of the insertion hole, the insertion portion and the blocking wall of the insertion hole jointly form the limiting structure, and the insertion portion can move axially along the insertion hole but cannot move continuously when moving to abut against the blocking wall of the insertion hole, so that the insertion portion cannot be separated from the insertion hole.
In order to prevent water from entering the jack or the slot and influencing the movement of the insertion part or the screw rod, a first water drainage hole communicated with the slot in a fluid mode is arranged on the connecting rod, and a second water drainage hole communicated with the jack in the fluid mode is arranged on the connecting rod with the jack.
One of the structural forms of the turbine is that the turbine comprises a first central part and at least two first blades arranged at intervals along the circumference of the first central part.
Another structure form of the turbine is that the turbine comprises
A second central portion having an axis parallel to or coincident with the axis of the cold water outlet;
the annular ring is coaxially arranged with the second central part and surrounds the periphery of the second central part, and a water passing area is formed between the annular ring and the second central part;
at least two pin shafts are radially distributed by taking the second central part as the center, and each pin shaft is connected between the second central part and the annular ring;
the second blades are arranged on the pin shafts in a one-to-one correspondence mode, can rotate relative to the corresponding pin shafts, can be axially and vertically arranged relative to the second central part to shield the water passing area, and can be axially inclined relative to the second central part to open the water passing area;
the positioning structure is arranged on the inner peripheral wall of the annular ring and can abut against the second blade so as to limit the rotation angle of the second blade, and the second blade is in an axial inclination or vertical state relative to the second central part. The benefits of this turbine configuration are: when water flows through the second blade, the second blade is in an inclined opening state, the driving force of the turbine can be increased, when no water flows through the second blade, the plug can only rotate due to the fact that the turbine cannot axially move when moving towards the cold water pipeline side, in the rotating process of the plug, the second blade can tend to be in a vertical closing state to reduce the rotating resistance of the turbine, and therefore the plug can also rapidly and sensitively move towards the cold water pipeline side.
The location structure can have multiple structural style, preferably, the round pin axle rotates with the middle part that corresponds the second blade and links to each other, location structure have at least two sets ofly and with the second blade one-to-one, each location structure includes along annular ring circumference interval setting and lie in first stopper and the second stopper that corresponds the round pin axle both sides, just the terminal surface of first stopper and second blade contact is located round pin axle both sides respectively along the annular ring axial.
In order to facilitate the blocking of the hot and cold water pipes by the plug, the intermediate pipe has a first port adjacent to the hot water pipe and a second port adjacent to the cold water pipe, the one-way valve assembly further comprising an elastic element acting on the plug to keep the plug tending to block the first port.
The technical scheme adopted by the invention for solving the fourth technical problem is as follows: the utility model provides an use gas heater water supply system of above-mentioned waterway structure which characterized in that: the water-saving water heater comprises a water heater, a cold water pipe, a hot water pipe and at least one water consumption point which is simultaneously connected with the cold water pipe and the hot water pipe, wherein one end of the hot water pipe is connected with the water outlet side of the water heater, the other end of the hot water pipe is divided into at least one hot water branch which is connected with the water consumption point in a one-to-one correspondence manner, one end of the cold water pipe is connected with an external water source, the other end of the cold water pipe is divided into two branches, the first branch is connected with the water inlet side of the water heater, the second branch is further divided into at least one cold water branch which is connected with the water consumption point in a one-to-one correspondence manner, the water consumption point farthest away from the water heater is in fluid communication with a hot water outlet and a cold water outlet of.
Compared with the prior art, the invention has the advantages that: 1. according to the invention, the driving assembly is arranged in the pipeline, and when the cold water outlet is opened, the driving assembly drives the plug to move, so that the hot water pipeline and the cold water pipeline are blocked by the plug, and the problems that the water heater is mistakenly opened and hot water continuously enters the cold water pipeline due to the opening of the check valve assembly when cold water is opened are effectively solved; 2. the driving assembly comprises a turbine arranged in a cold water outlet, the turbine is connected with the plug through a screw, and when cold water is opened to enable water flow to pass through the cold water outlet, the turbine rotates to finally drive the plug to move, so that the plug can rapidly and timely block a hot water pipeline and a cold water pipeline when the cold water outlet is opened; 3. the connecting rod is designed in a split manner, so that the plug only needs to drive one connecting rod when moving, the weight is light, the movement of the plug is flexible and quick at the moment of opening the hot water outlet, the hot water pipeline and the cold water pipeline are plugged in time, and cold water is prevented from entering the hot water pipeline.
Drawings
Fig. 1 is a schematic structural view of a waterway structure in embodiment 1 of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 with the tube removed;
FIG. 4 is a cross-sectional view of FIG. 1 (with cold water);
FIG. 5 is a cross-sectional view of FIG. 1 (a cyclic preheat state);
FIG. 6 is a schematic diagram of a water supply system using the waterway structure of FIG. 1 (the direction of water flow in the pipeline when the circulation preheating is not performed);
FIG. 7 is a schematic diagram showing a structure of a water supply system using the waterway structure of FIG. 1 (a water flow direction of a pipeline during circulation preheating);
FIG. 8 is an exploded perspective view of the present invention, with a tube removed, according to example 2;
FIG. 9 is a sectional view (in a cold water state) of embodiment 2 of the present invention;
FIG. 10 is a sectional view (circulation preheating state) of embodiment 2 of the present invention;
FIG. 11 is a schematic view of the structure of example 2 of the present invention with the pipe body removed (the water passing area is opened);
FIG. 12 is a schematic view of the structure of example 2 of the present invention with the pipe body removed (water passing area closed);
FIG. 13 is an exploded perspective view of the present invention, with the tube removed, according to example 3;
FIG. 14 is a sectional view showing example 3 of the present invention (in a state of using cold water or both of the cold and hot water);
FIG. 15 is a sectional view (circulation preheating state) of embodiment 3 of the present invention;
FIG. 16 is a sectional view showing example 3 of the present invention (hot water state in circulation preheating);
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1
As shown in fig. 1 to 7, the water supply system of the gas water heater in the preferred embodiment includes a waterway structure, a water heater 5, a cold water pipe 6, a hot water pipe 7, and at least one water consumption point 8 for simultaneously connecting the cold water pipe 6 and the hot water pipe 7, the waterway structure is generally connected to the water consumption point 8 (i.e., a faucet) farthest from the water heater 5, and the waterway structure includes a pipe body 1, a check valve assembly 2, and the like.
The interior of the pipe body 1 is divided into a hot water pipe 11, a cold water pipe 12 and an intermediate pipe 13 communicating the hot water pipe 11 and the cold water pipe 12, wherein the hot water pipe 11 has a hot water inlet 111 and a hot water outlet 112 which are in fluid communication, the cold water pipe 12 has a cold water inlet 121 and a cold water outlet 122 which are in fluid communication, and the axis of the cold water outlet 122 is parallel to or coincident with the axis of the intermediate pipe 13. In this embodiment, see fig. 4, the hot water pipe 11 is located on the left side, the middle pipe 13 is located in the middle, and the cold water pipe 12 is located on the right side.
As shown in fig. 1 and 6, one end of the hot water pipe 7 is connected to the water outlet side of the water heater 5, the other end is divided into three hot water branches 71 connected to the water consumption points 8 in a one-to-one correspondence manner, one end of the cold water pipe 6 is connected to an external water source, the other end is divided into two branches, the first branch 61 is connected to the water inlet side of the water heater 5, the second branch is further divided into three cold water branches 62 connected to the water consumption points 8 in a one-to-one correspondence manner, the hot water port of the water consumption point 8 farthest from the water heater 5 is in fluid communication with the hot water outlet 112 of the pipe body 1, the cold water port of the water consumption point 8 farthest from the water heater 5 is in fluid communication with the cold water outlet 122 of the pipe body 1, the hot water branch 71 corresponding to the farthest water consumption point 9 is in fluid communication with the hot water inlet 111 of.
The check valve assembly 2 is provided in the intermediate pipe 13 to allow only water in the hot water pipe 11 to flow into the cold water pipe 12 in one direction. In this embodiment, the check valve assembly 2 includes a plug 21 and a connecting rod 22, the middle pipe 13 has a first port 131 adjacent to the hot water pipe 11 and a second port 132 adjacent to the cold water pipe 12, the connecting rod 22 extends from the first port 131 to the second port 132, and the plug 21 is disposed on the first end of the connecting rod 22 and can block the first port 131.
As shown in fig. 2 and 3, a guide plate 24 is disposed in the intermediate pipe 13 adjacent to the second port 132, a water passing opening 241 is disposed on the guide plate 24, the second end of the connecting rod 22 passes through the guide plate 24, the connecting rod 22 is capable of moving axially, a through hole 242 for the connecting rod 22 to pass through is disposed on the guide plate 24, the through hole 242 plays a role of guiding a moving track of the connecting rod 22, a clamping groove 2421 is disposed on a peripheral wall of the through hole 242, a clamping block 220 slidably disposed in the clamping groove 2421 is disposed on an outer peripheral wall of the connecting rod 22, and the clamping groove 2421 and the clamping block 220 cooperate to prevent the connecting rod 22 from rotating. The inner wall of the middle pipeline 13 is provided with a positioning ring along the circumferential direction, a first clamp spring 25 which is abutted against the first end face of the guide plate 24 is arranged in the positioning ring, and the first clamp spring 25 plays a role in positioning the guide plate 24.
As shown in fig. 7, when the water supply system is circularly preheated, the cold water outlet 122 and the hot water outlet 112 are both closed, the closed pipeline is driven by the circulating pump to flow from the hot water inlet 111 to the cold water inlet 121, the plug 21 moves towards the cold water pipeline 12 under the action of the water flow in the hot water pipeline 11, so that the first port 131 is opened, and the water entering the hot water pipeline 11 from the hot water inlet 111 flows through the intermediate pipeline 13, is discharged from the cold water inlet 121, then flows into the water heater 5 through the cold water branch 62 and the first branch 61, and is discharged from the hot water pipe 7 after being heated, so that the instant heating and instant heating of the water is realized. When the water heater 5 is not in the circulation preheating state, the water flow path is as shown in fig. 6, if a negative pressure is formed at the cold water outlet 122 when the user uses cold water, the problem that the water at the hot water inlet 111 continuously flows out from the cold water outlet 122 and the water heater 5 is started by mistake may be caused, and the driving assembly described below can solve the problem.
As shown in fig. 2 to 5, the driving assembly includes a turbine 3 and a screw 4, the turbine 3 is disposed in the cold water outlet 122 and can rotate relative to the cold water outlet 122, the turbine 3 includes a first central portion 32 and at least two first blades 33 disposed at intervals along the circumference of the first central portion 32, the axis of the first central portion 32 is parallel to or coincides with the axis of the cold water outlet 122, and when there is water flow in the cold water outlet 122, the turbine 3 can rotate under the action of the water flow.
The first end of the screw rod 4 is connected with the turbine 3, the second end is in threaded connection with the connecting rod 22, the connecting rod 22 is provided with a slot 221 facing the screw rod 4, and the second end of the screw rod 4 is inserted into the slot 221 and in threaded connection with the slot 221.
As shown in fig. 2 and 3, an installation frame 123 is arranged in the cold water pipe 12, a water through hole 1231 is arranged on the installation frame 123, the screw rod 4 penetrates through the installation frame 123 and can rotate relative to the installation frame 123, and a second snap spring 124 which abuts against the end surface of the installation frame 123 to position the installation frame 123 is arranged in the pipe 1.
The working process of the waterway structure of the embodiment is as follows:
as shown in fig. 4, when cold water is used, the cold water outlet 122 is opened, the worm wheel 3 drives the screw rod 4 to rotate under the thrust of water flow, the screw rod 4 drives the connecting rod 22 to move towards the hot water pipe 11, so that the plug 21 plugs the first port 131 of the middle pipe 13, the hot water pipe 11 and the cold water pipe 12 are blocked by the plug 21, and hot water is prevented from flowing out of the cold water outlet 122;
when hot water is used, the hot water outlet 112 is opened, the water flow pressure at the cold water inlet 121 side is greater than that at the hot water outlet 112, the pressure pushes the plug 21 to plug the first port 131 of the middle pipe 13, the hot water pipe 11 and the cold water pipe 12 are blocked by the plug 21, so that cold water is prevented from flowing out of the hot water outlet 112, in the moving process of the plug 21, the turbine 3 cannot axially move, so that the turbine can only circumferentially rotate, and in this state, the position of the plug 21 is consistent with that shown in fig. 4;
as shown in fig. 5, when the water in the closed pipeline is circularly preheated, the water enters from the hot water inlet 111 under the action of the built-in circulating water pump of the water heater 5, and the water flows out from the cold water inlet 121, at this time, the water flow in the hot water pipeline 11 pushes the plug 21 to move towards the direction far away from the first port 131, so that the hot water pipeline 11 and the cold water pipeline 12 are communicated, and the water flow in the closed pipeline can be circularly preheated normally; during the movement of the plug 21, the turbine 3 cannot move axially and therefore can only rotate circumferentially.
Example 2
As shown in fig. 8 to 12, example 2 differs from example 1 in that:
1. as shown in fig. 8 to 10, a limiting member 222 capable of abutting against the second end of the screw rod 4 is disposed in the slot 221 of the connecting rod 22, when the second end of the screw rod 4 abuts against the limiting member 222, the screw rod 4 can no longer be continuously screwed into the slot 221, so as to ensure that the screw rod 4 can subsequently rotate in the opposite direction relative to the connecting rod 22, otherwise, if the screw rod 4 is screwed into the slot 221 to a too deep depth, the screw rod 4 and the connecting rod 22 are locked. In this embodiment, the limiting member 222 is a spring, one end of the spring is connected to the bottom wall of the slot 221, and the other end faces the screw 4; the connecting rod 22 is provided with a first drain hole 226 in fluid communication with the slot 221 to prevent water from entering the slot 221 and affecting the movement of the screw 4.
2. The turbine 3 differs in structure: as shown in fig. 11 and 12, in the present embodiment, the turbine 3 includes a second central portion 34, an annular ring 35, pins 36, second blades 37 and a positioning structure, an axis of the second central portion 34 is parallel to or coincides with an axis of the cold water outlet 122, the annular ring 35 is coaxially disposed with the second central portion 34 and surrounds an outer periphery of the second central portion 34, a water passing area 351 is formed between the annular ring 35 and the second central portion 34, the pins 36 are six and radially distributed with the second central portion 34 as a center, each pin 36 is connected between the second central portion 34 and the annular ring 35, the second blades 37 are six, a shaft sleeve 371 extending in a radial direction of the second central portion 34 is disposed in a middle portion of each second blade 37, and the pins 36 are rotatably inserted into the corresponding shaft sleeves 371 one by one, so that the second blades 37 are rotatably mounted on the corresponding pins 36.
The locating structure is located on the internal perisporium of annular ring 35, the locating structure have six groups and with second blade 37 one-to-one, each locating structure includes along annular ring 35 circumference interval set up first stopper 38 and second stopper 39, first stopper 38 and second stopper 39 are located and correspond round pin axle 36 both sides, and the terminal surface of first stopper 38 and second stopper 39 and second blade 37 contact is located round pin axle 36 both sides respectively along annular ring 35 axial, in this embodiment, along annular ring 35 axial, first stopper 38 can be slightly less than round pin axle 36 with the terminal surface that second blade 37 offseted, second stopper 39 can be slightly more than round pin axle 36 with the terminal surface that second blade 37 offseted.
As shown in fig. 11, when water flows through the cold water outlet 122, the second vanes 37 rotate under the action of the water flow until the second stoppers 39 abut against, and at this time, all the second vanes 37 are in a state of being axially inclined with respect to the second central portion 34, so that the water passing region 351 is opened, and the driving force of the turbine 3 can be increased; as shown in fig. 12, when there is no water flow at the cold water outlet 122, when the plug 21 moves towards the cold water pipe 12, the turbine 3 rotates (embodiment 1 has already been explained), and there is resistance in the process of rotating the turbine 3, so that the second blade 37 necessarily tends to rotate in a direction of reducing the rotational resistance of the turbine 3 until the second blade 37 abuts against the first stopper 38, at this time, all the second blades 37 are axially perpendicular to the second central portion 34, all the second blades 37 are located on the same plane to shield the water passing region 351, the rotational resistance of the turbine 3 is the minimum, in other words, at this time, the turbine 3 is more easily rotated, and there is no great resistance to the movement of the plug 21, so that the plug 21 can also rapidly and sensitively move towards the cold water pipe 12.
A third snap spring 125 is provided in the pipe 1, which abuts against an end face of the annular ring 35 to position the annular ring 35.
The working process of the structure of the turbine 3 is as follows:
as shown in fig. 9, when cold water is used, the cold water outlet 122 is opened, when water flows through, the second blades 37 rotate along the pin shaft 36 by a certain angle until the second blades abut against the second limiting block 39, at this time, all the second blades 37 are in a state of being axially inclined relative to the second central portion 34, so that the water passing region 351 is opened, the water flow drives the entire turbine 3 to rotate, the screw rod 4 is driven to rotate, the plug 21 moves along the screw rod 4 until the first port 131 of the intermediate pipe 13 is plugged, and hot water is prevented from flowing out from the cold water outlet 122;
as shown in fig. 10, when the circulation preheating is performed, water flow in the closed pipeline enters from the hot water inlet 111 under the action of the built-in circulation water pump of the water heater 5, the cold water inlet 121 flows out, at this time, the water flow pushes the plug 21 to move towards the cold water pipeline 12 side, the plug 21 moves to drive the screw rod 4 and the turbine 3 to rotate, at this time, no water flow flows through the cold water outlet 122, the second blade 37 tends to close the water passing area 351 when rotating, so that the rotation resistance of the turbine 3 is reduced, the plug 21 is ensured to normally open a channel between cold water and hot water, and the water flow in the closed pipeline can be normally.
When hot water is used, the plug 21 closes the first port 131 of the intermediate pipe 13 by the pressure on the side of the cold water pipe 12, the turbine 3 rotates, and the second blade 37 rotates to close the water passing region 351.
The closed pipeline is composed of a water heater 5, a hot water pipe 7, a cold water pipe 6 and a waterway structure.
In addition to the above difference, other structures can be referred to embodiment 1.
Example 3
As shown in fig. 13 to 16, example 3 differs from example 2 in that: the connecting rod 22 is of split design.
In this embodiment, the connecting rod 22 includes two connecting rods, one of the connecting rods is connected to the plug 21, the other connecting rod is provided with a slot 221, for convenience of description, the connecting rod connected to the plug 21 is a first connecting rod 223a, the connecting rod connected to the screw rod 4 is a second connecting rod 223b, the first connecting rod 223a and the second connecting rod 223b are inserted and matched and can move axially relative to each other, the end of the first connecting rod 223a is provided with a socket 224, the end of the second connecting rod 223b is provided with an insertion portion 225 capable of being inserted into the socket 224, the insertion portion 225 can move axially along the socket 224, a blocking wall 228 is formed radially inward at an opening of the socket 224, the cross section of the insertion portion 225 is T-shaped and can abut against the blocking wall 228 of the socket 224, the insertion portion 225 and the blocking wall 228 of the socket 224 together form a limiting structure for preventing the two connecting rods from being separated, the insertion portion 225 can move axially along the socket 224, but move until abutting against the blocking, cannot be moved further and thus cannot be disengaged from the jack 224.
In this embodiment, in order to facilitate the first link 223a and the second link 223b to be rapidly pushed toward each other, the end of the second link 223b connected to the insertion portion 225 can abut against the blocking wall 228 of the insertion hole 224, and when the end of the second link 223b abuts against the blocking wall 228 of the insertion hole 224, the two can be pushed toward each other; of course, the first link 223a and the second link 223b may be pushed against each other by the insertion portion 225 abutting against the inner wall of the insertion hole 224.
In addition, the first link 223a axially penetrates through the guide plate 24, the elastic member 23 is sleeved on the first link 223a, the elastic member 23 is a spring, two ends of the spring respectively abut against the guide plate 24 and the plug 21, and the plug 21 always keeps a tendency of blocking the first port 131 of the intermediate pipe 13 under the action of the elastic member 23.
In order to prevent water from entering the insertion hole 224 and affecting the movement of the insertion portion 225, the first link 223a is provided with a second drain hole 227 in fluid communication with the insertion hole 224.
As shown in fig. 14, when cold water or cold and hot water is used simultaneously, the turbine 3 rotates integrally, the second connecting rod 223b moves axially towards the first port 131 of the intermediate pipe 13 until the end of the second connecting rod 223b abuts against the blocking wall 228 of the insertion hole 224 on the first connecting rod 223a, the turbine 3 continues to rotate, the second connecting rod 223b continues to move axially, the first connecting rod 223a and the plug 21 are pushed to move until the plug 21 blocks the first port 131, the hot water pipe 11 and the cold water pipe 12 are blocked, hot water cannot flow into the cold water pipe 12, and the plug 21 cannot be opened to cause false start of the water heater 5;
as shown in fig. 15, when the circulation preheating is performed, water flow in the closed pipeline enters from the hot water inlet 111 under the action of the built-in circulation water pump of the water heater 5, and flows out from the cold water inlet 121, at this time, the water flow in the hot water pipeline 11 pushes the plug 21 to move in the direction away from the first port 131, the hot water pipeline 11 is communicated with the cold water pipeline 12, and the water flow in the closed pipeline can be normally and circularly preheated; in the moving process of the plug 21, the turbine 3 and the screw rod 4 can not move axially, so that only circumferential rotation can be realized;
as shown in fig. 16, when hot water is used, the hot water outlet 112 is opened, the pressure of the water flow on the side of the cold water inlet 121 is greater than that of the hot water outlet 112, the pressure pushes the plug 21 and the first link 223a to move toward the first port 131 until the first port 131 of the intermediate pipe 13 is plugged, and the hot water pipe 11 and the cold water pipe 12 are blocked by the plug 21, thereby preventing cold water from flowing out of the hot water outlet 112. It can be seen that the split design of the connecting rod 22 has the advantages of: when the hot water outlet 112 is opened, the plug 21 moves toward the hot water pipe 11 under the action of the water pressure on the cold water pipe 12 side, because the plug 21 is only connected with the first connecting rod 223a, and the first connecting rod 223a and the second connecting rod 223b can move axially, for a mode that the connecting rods are integrated (such as the structure of the connecting rods 22 of the embodiments 1 and 2), the plug 21 only needs to drive the first connecting rod 223a to move, and the rotation resistance of the turbine 3 does not need to be overcome, so that the plug 21 can move rapidly, the resistance of the movement of the plug 21 is small, the movement is flexible and rapid, and the hot water pipe 11 and the cold water pipe 12 can be plugged at the moment of opening the hot water outlet 112.
In addition to the above difference, other structures can be referred to embodiment 2.
The closed pipeline is composed of a water heater 5, a hot water pipe 7, a cold water pipe 6 and a waterway structure.
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 (10)
1. A waterway structure comprises
The water heater comprises a pipe body (1), wherein the inside of the pipe body (1) is divided into a hot water pipeline (11), a cold water pipeline (12) and an intermediate pipeline (13) for communicating the hot water pipeline (11) with the cold water pipeline (12), the hot water pipeline (11) is provided with a hot water inlet (111) and a hot water outlet (112) which are communicated in a fluid mode, and the cold water pipeline (12) is provided with a cold water inlet (121) and a cold water outlet (122) which are communicated in a fluid mode;
a one-way valve assembly (2) which comprises a plug (21) which is movably arranged in the middle pipeline (13) and only allows water in the hot water pipeline (11) to flow into the cold water pipeline (12) in one way;
it is characterized by also comprising
The driving assembly is arranged in the pipe body (1) and connected with the plug (21), and the driving assembly drives the plug (21) to be positioned at a position for blocking the hot water pipeline (11) and the cold water pipeline (12) when the cold water outlet (122) is opened;
the drive assembly comprises
The turbine (3) is arranged in the cold water outlet (122) and can rotate relative to the cold water outlet (122), and the axis of the cold water outlet (122) is parallel to or coincided with the axis of the middle pipeline (13);
the first end of the screw rod (4) is connected with the turbine (3), and the second end of the screw rod is in threaded connection with the plug (21);
the plug (21) is connected with the screw rod (4) through a connecting rod (22), a slot (221) facing the screw rod (4) is formed in the connecting rod (22), the second end of the screw rod (4) is inserted into the slot (221) and is in threaded connection with the slot (221); the connecting rod (22) comprises two connecting rods, one connecting rod is connected with the plug (21), the other connecting rod is provided with the slot (221), the two connecting rods are inserted and assembled and can move axially relative to each other, and a limiting structure for preventing the two connecting rods from being disconnected is arranged between the two connecting rods.
2. The waterway structure of claim 1, wherein: a limiting piece (222) which can be abutted against the second end of the screw rod (4) is arranged in the slot (221).
3. The waterway structure of claim 2, wherein: the limiting piece (222) is a spring, one end of the limiting piece is connected with the bottom wall of the slot (221), and the other end of the limiting piece faces the screw rod (4).
4. The waterway structure of claim 1, wherein: the end part of one of the connecting rods is provided with an inserting hole (224), the end part of the other connecting rod is provided with an inserting part (225) capable of being inserted into the inserting hole (224), the inserting part (225) can axially move along the inserting hole (224), a blocking wall (228) is formed at the opening of the inserting hole (224) inwards in the radial direction, the cross section of the inserting part (225) is T-shaped and can be abutted against the blocking wall (228) of the inserting hole (224), and the inserting part (225) and the blocking wall (228) of the inserting hole (224) jointly form the limiting structure.
5. The waterway structure of claim 4, wherein: the connecting rod with the inserting groove (221) is provided with a first drainage hole (226) communicated with the inserting groove (221) in a fluid mode, and the connecting rod with the inserting hole (224) is provided with a second drainage hole (227) communicated with the inserting hole (224) in the fluid mode.
6. The waterway structure of claim 1, wherein: the intermediate conduit (13) has a first port (131) adjacent to the hot water conduit (11) and a second port (132) adjacent to the cold water conduit (12), the one-way valve assembly (2) further comprising a resilient member (23) acting on the plug (21) to maintain the plug (21) in a tendency to block the first port (131).
7. The waterway structure of any one of claims 1-6, wherein: the turbine (3) comprises a first central part (32) and at least two first blades (33) arranged at intervals along the circumference of the first central part (32).
8. The waterway structure of any one of claims 1-6, wherein: the turbine (3) comprises
A second central portion (34) having an axis parallel to or coincident with the axis of the cold water outlet (122);
the annular ring (35) is coaxially arranged with the second central part (34) and surrounds the periphery of the second central part (34), and a water passing area (351) is formed between the annular ring (35) and the second central part (34);
at least two pin shafts (36) are radially distributed by taking the second central part (34) as the center, and each pin shaft (36) is connected between the second central part (34) and the annular ring (35);
the second blades (37) are provided with at least two pieces and are arranged on the pin shafts (36) in a one-to-one correspondence mode, the second blades (37) can rotate relative to the corresponding pin shafts (36), the second blades (37) can be axially vertical relative to the second central portion (34) to shield the water passing region (351), and the second blades (37) can be axially inclined relative to the second central portion (34) to open the water passing region (351);
and a positioning structure which is provided on the inner peripheral wall of the annular ring (35) and can abut against the second blade (37) to limit the rotation angle of the second blade (37) so that the second blade (37) is in an axially inclined or vertical state relative to the second center part (34).
9. The waterway structure of claim 8, wherein: round pin axle (36) rotate with the middle part that corresponds second blade (37) and link to each other, location structure has at least two sets ofly and with second blade (37) one-to-one, each location structure includes along annular circle (35) circumference interval setting and lie in first stopper (38) and second stopper (39) that correspond round pin axle (36) both sides, just first stopper (38) and second stopper (39) lie in round pin axle (36) both sides respectively along annular circle (35) axial with the terminal surface that second blade (37) contacted.
10. A water supply system of a gas water heater applying the waterway structure of any one of claims 1-9, wherein: the water heater comprises a water heater (5), a cold water pipe (6), a hot water pipe (7) and at least one water consumption point (8) which is connected with the cold water pipe (6) and the hot water pipe (7) at the same time, one end of the hot water pipe (7) is connected with the water outlet side of the water heater (5), the other end of the hot water pipe is divided into at least one hot water branch (71) which is correspondingly connected with the water consumption point (8), one end of the cold water pipe (6) is connected with an external water source, the other end of the cold water pipe is divided into two branches, a first branch (61) is connected with the water inlet side of the water heater (5), a second branch is divided into at least one cold water branch (62) which is correspondingly connected with the water consumption point (8), the water consumption point (8) farthest away from the water heater (5) is in fluid communication with a hot water outlet (112) and a cold water outlet (122) of a pipe body (1), and the hot water branch (71) corresponding to the, the cold water branch (62) corresponding to the furthest point of use (8) is in fluid communication with the cold water inlet (121) of the pipe body (1).
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| CN112855987B (en) * | 2021-01-07 | 2022-03-22 | 宁波方太厨具有限公司 | Zero cold water one-way valve for water heater |
| CN112855992B (en) * | 2021-01-12 | 2022-03-08 | 宁波方太厨具有限公司 | Check valve and gas water heater system comprising same |
| CN112944675B (en) * | 2021-04-01 | 2024-06-04 | 佛山市资新节能设备有限公司 | Heat exchanger with built-in water pump and heat pump water heater |
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