CN112963557A

CN112963557A - Pipe valve device suitable for control of hot water circulation pipeline

Info

Publication number: CN112963557A
Application number: CN202110330138.8A
Authority: CN
Inventors: 王强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-06-15

Abstract

The invention relates to a pipe valve device suitable for controlling a hot water circulating pipeline, which comprises: the first transverse pipe, the first valve plate, the first spring and the second spring; the first cross tube comprises a first opening and a second opening; the first valve plate is slidably arranged in the first transverse pipe, the first spring and the second spring are arranged in the first transverse pipe, one end of the first spring is connected with one side of the first valve plate, and one end of the second spring is connected with the wall of the first transverse pipe. The water heater has the technical effects of automatically identifying and effectively distinguishing the source and the form of the instant water flow and making the reaction action of the opening and closing water flow channel in a targeted manner, can ensure that the water flow generated by the circular driving of the water heater can normally pass, eliminate the phenomenon that the burner of the water heater is ignited by the action error of using a water flushing closestool or other cold water, ensure that a user is more comfortable and realize the application effect of more energy saving.

Description

Pipe valve device suitable for control of hot water circulation pipeline

Technical Field

The invention relates to the technical field of domestic hot water pipeline circulation, in particular to a pipe valve device suitable for controlling a hot water circulation pipeline.

Background

When the zero-cold-water heater in the prior art is applied in a pipeline environment without a pre-installed hot water return pipe, the most common method for establishing the circulating working condition is to adopt an H-shaped cold and hot water pipeline connecting piece in the prior art, wherein the H-shaped cold and hot water pipeline connecting piece is composed of a transverse pipe internally provided with a check valve in the prior art and two tee joints (see figure 15), and the purpose of the internally provided check valve is to ensure the unidirectional flow of water flow in the hot water pipe and prevent the water flow in the cold water pipeline from flowing into the hot water pipe. The specific installation method is that a cold water pipe and a hot water pipe are communicated and connected in series at a certain water consumption point in the pipeline environment by using an H-shaped cold and hot water pipeline connecting piece in the prior art, so that normal-temperature water stored in the hot water pipeline can flow back to a cold water inlet of the water heater by the cold water pipe under the driving of a zero-cold water heater circulating device, and then is heated by the water heater and is conveyed to the water consumption point communicated with the H-shaped cold and hot water pipeline connecting piece in the prior art again by the hot water pipeline (see figure 18) so as to achieve the purpose of circularly heating water stored in the hot water pipeline.

The zero-cold-water heater in the prior art has the following problems in practical application that when a user uses a water closet or opens a cold-water faucet to use cold water, water flow in a hot water pipeline on one side of an H-shaped cold-hot water pipe connector is generally led to flow into a cold water pipeline on the other side, a burner of the water heater is ignited by mistake (see fig. 16), and meanwhile, the temperature of the cold water in the cold water pipeline is obviously increased, so that the use experience of the user is influenced. Because the circulating water flow of the zero-cold water heater and the water mixing flow after using the water closet are in the same direction, the one-way valve in the H-shaped cold and hot water pipe connector in the prior art can only block the water mixing flow of which the pressure or the pressure is smaller than that of the water flow driven by the circulating device of the zero-cold water heater, and the water mixing flow generated by the larger cold water using action of the water closet and the like is equivalent to (even possibly larger than) the water flow generated by the driving of the circulating device of the zero-cold water heater, and the pressure of the water mixing flow is also larger than that of the water flow driven by the circulating device of the zero-cold water heater, therefore, in the pipeline environment without a pre-installed hot water return pipe, the phenomenon that the water heater burner is ignited by the larger cold water using action error of the water closet or the.

In a specific pipeline environment of a zero-cold water heater without a hot water return pipe, water flow flowing from one side of a hot water pipe to one side of a cold water pipe through a pipe valve device is caused by the following two different factors, and the water flows of the two different factors have differences in flow, pressure, instantaneous kinetic energy and the like, so that the differences create necessary working conditions for the pipe valve device suitable for controlling a hot water circulating pipeline.

First, when all the taps of cold and hot water in the water environment are closed, the circulating device of the zero-cold water heater is driven to generate a circulating water flow, the water flow goes through a process from weak and strong to a flow stability state, and the water flow is basically in a constant pressure state (usually about 1 kg), and when the pressure of the water flow is greater than the resistance in the pipe valve device, the water flow flows from one side of the hot water pipe to one side of the cold water pipe through the pipe valve device to form circulation.

Secondly, when all the cold and hot water taps in a water environment are in a closed state, when a toilet is used for flushing or a user opens a cold water tap at a certain water using point, the cold water flows out of the cold water tap, meanwhile, a pressure difference of low pressure at one side of the cold water pipe and high pressure at one side of the hot water pipe is instantly formed at two sides of the pipe valve device, under the action of the pressure difference, water flow at one side of the hot water pipe with the pressure larger than the internal resistance of the pipe valve device can be in series flow into one side of the cold water pipe through the pipe valve device, and when the water flow reaches a certain flow rate (generally, the burner of the gas water heater in the prior art cannot be ignited when the flow rate is lower than about 2L/min), the burner of the water heater can.

The sources, forms and performances of the water flows generated under the two factors are different, and the water flow generated under the driving of the circulating device of the zero-cold-water heater is usually a gradually-increased water flow with lower pressure and more constant pressure or can be artificially set to be a gradually-increased water flow with a specific pressure value; the second cause of the flow pattern is usually characterized by a sudden transient, and the pressure of the flow is also significantly greater than the pressure of the flow generated by the zero-cold water heater cycle (if the resistance in the "pipe valve device" is too great, the operation of the zero-cold water heater cycle is affected).

Compared with the technical scheme of a single spring, the invention has the advantages that after the second spring is added, the technical effects of automatically identifying the two water flow forms and sources and making a targeted action response are more specifically realized.

Because the water flows from the two sources are in the same forward flow direction, the technical scheme of the single spring in the practical application environment basically controls the opening and closing of the water flow channel according to the flow, has low sensitivity to sudden water flow and pressure change, is difficult to make a targeted response of the opened and closed water flow channel according to the form of the instant passing water flow and the sources, and particularly can cause error closing of a valve body channel and influence the normal work of a zero-cold-water heater circulating device when the flow of the water flow driven by the zero-cold-water heater circulating device is large under the influence of objective environment; moreover, the technical scheme of the single spring usually needs to repeatedly debug the force of the spring to adapt to the individual environment on site, and the installation operation procedure is complicated; the pipe valve device suitable for controlling the hot water circulating pipeline enlarges the tolerance range of normal passing of the circulating water flow of the zero-cold water heater, improves the response speed and sensitivity to the sudden water flow, and simplifies the field installation operation procedure.

Disclosure of Invention

The pipe valve device suitable for controlling the hot water circulating pipeline has the functions of automatically identifying and effectively distinguishing the source and the form of instant water flow, can ensure the normal flow of the water flow generated by the circular driving of the water heater, prevent the water flow at one side of the cold water pipe from entering the hot water pipe, and can eliminate the phenomenon that a water heater burner is ignited by using a flushing closestool or other cold water using actions by mistake, so that a user feels more comfortable, and the application effect of saving more energy is realized.

In order to achieve the purpose, the invention provides the following technical scheme:

a pipe valve apparatus adapted for control of a hot water circulation pipe, comprising: the first transverse pipe 1, the first valve plate 4, the first spring 5 and the second spring 6; the first cross tube 1 comprises a first opening 2 and a second opening 3;

the first valve plate 4 is slidably arranged in the first transverse pipe 1, the first spring 5 and the second spring 6 are arranged in the first transverse pipe 1, one end of the first spring 5 is connected with one side of the first valve plate 4, and one end of the second spring 6 is connected with the pipe wall of the first transverse pipe 1.

Preferably, the second spring 6 is arranged in parallel with the first spring 5, the other end of the first spring 5 is connected with the pipe wall of the first transverse pipe 1, and the other end of the second spring 6 is not in contact with the first spring 5 and the first valve plate 4.

Preferably, the other end of the second spring 6 is connected with the other end of the first spring 5.

Preferably, the valve further comprises a second valve plate 7, the second valve plate 7 is slidably disposed in the first transverse pipe 1, one side of the second valve plate 7 is connected to the other end of the second spring 6, the other side of the second valve plate 7 is connected to the other end of the first spring 5, and the second valve plate 7 is larger than the second opening 3.

Preferably, the first valve plate 4 is larger than the first opening 2.

Preferably, a longitudinal partition plate 1a is arranged in the first transverse tube 1, the partition plate 1a divides the transverse tube 1 into a first passage 8 and a second passage 9, the first passage 8 comprises a third opening 2a and a fourth opening 3a, and the second passage 9 comprises a fifth opening 2b and a sixth opening 3 b;

the first valve plate 4 is slidably arranged in the first channel 8, the first spring 5 is arranged in the first channel 8, one end of the first spring 5 is connected with the first valve plate 4, and the other end of the first spring is connected with the pipe wall of the first transverse pipe 1; the third valve plate 7a is slidably arranged in the second channel 9, the second spring 6 is arranged in the second channel 9, one end of the second spring 6 is connected with the third valve plate 7a, and the other end is connected with the tube wall of the first transverse tube 1; the first valve plate 4 is larger than the fourth opening 3a, and the third valve plate 7a is larger than the sixth opening 3 b.

Preferably, the first valve plate 4 is larger than the third opening 2 a; the third valve plate 7a is larger than the fifth opening 2 b.

Preferably, the device further comprises a second transverse pipe 10, a first tee joint 11 and a second tee joint 12; the first transverse pipe 1 is arranged in the second transverse pipe 10; one end of the second transverse pipe 10 is connected with a seventh opening 13 of the first tee joint 11, and the other end of the second transverse pipe is connected with a tenth opening 16 of the second tee joint 12;

the eighth opening 14 of the first tee joint 11 is connected with a cold water inlet A of a water point using water, the ninth opening 15 is connected with a cold water inlet B of a water point using water mixing valve, the eleventh opening 17 of the second tee joint 12 is connected with a hot water inlet C of a water point using water, and the twelfth opening 18 is connected with a hot water inlet D of the water point using water mixing valve.

Through implementing above technical scheme, have following technological effect: the pipe valve device suitable for controlling the hot water circulating pipeline is the same as the mounting position of an H-shaped cold and hot water pipeline connecting piece in the prior art, can not only realize the basic function of preventing water flow at one side of a cold water pipeline from entering a hot water pipe, but also effectively identify and distinguish the source and the form of the water flow passing through instantly when the H-shaped cold and hot water pipeline connecting piece in the prior art is used together with a zero-cold water heater, automatically keep opening or closing a water flow channel, can eliminate the phenomenon that a water heater burner is ignited due to the error of water using a flushing toilet or other cold water using actions on the basis of ensuring the normal passing of the water flow generated by the circulating drive of the water heater, and can ensure that a user feels more comfortable and can also realize the application effect of more energy saving (see figure 17).

Drawings

Fig. 1 is a schematic sectional view of the position state of a first valve plate when pressures at two ends of a first transverse pipe are balanced in embodiment 2;

FIG. 2 is a schematic sectional view of the position of the first valve plate and the water flow path when the first opening generates a gradually increasing water flow with a lower pressure in embodiment 2;

FIG. 3 is a schematic sectional view showing the position of the first valve plate when a sudden flow of water with a relatively high pressure occurs in the first opening in the embodiment 2;

FIG. 4 is a schematic sectional view of the connection of the first spring and the second spring in embodiment 3;

fig. 5 is a schematic sectional view of the position states of the first valve plate and the second valve plate when the pressures at the two ends of the first horizontal pipe are equalized in embodiment 4;

FIG. 6, embodiment 4, the cross-sectional view and the water flow path of the position of the first and second valve plates, the state of the first and second springs, and the water flow path when the first opening generates a gradually increasing water flow with a lower pressure;

FIG. 7 is a cross-sectional view of the position of the first and second valve plates and the position of the first and second springs in the case of a sudden, high pressure water flow at the first opening in example 4;

FIG. 8 is a schematic cross-sectional view of the transverse tube divided into two longitudinally by the partition plate in the embodiment 6;

FIG. 9 is a schematic sectional view of the first cross tube and the third cross tube in the embodiment 6 showing the positions of the first valve plate and the third valve plate when the pressures at the two ends of the first cross tube are equalized;

FIG. 10 is a schematic sectional view showing the positions of the first and third valve plates and the water flow path when the water flow having a gradually increasing pressure is generated on the third and fifth openings in example 6;

FIG. 11 is a schematic sectional view showing the positions of the first and third valve plates in the case where a sudden flow of water having a relatively high pressure occurs at the third and fifth openings in example 6;

fig. 12 is a schematic sectional view of the position states of the first valve plate and the second valve plate when the pressures at the two ends of the first horizontal pipe are equalized in the embodiment 8;

fig. 13, embodiment 8, when the first opening generates a gradually increasing water flow with a lower pressure, the position state of the first valve plate 4 and the second valve plate 7, the state of the first spring and the second spring, the cross-sectional schematic view and the water flow path;

fig. 14, embodiment 8, the position state of the first valve plate 4 and the second valve plate 7, the state of the first spring and the second spring, the cross-sectional schematic view and the water flow path when the sudden and strong pressure water flow occurs at the first opening;

FIG. 15 is a schematic view of a prior art "H-type hot and cold water connection" configuration;

FIG. 16, a schematic view of a prior art "H-type hot and cold water connection" showing hot water cascading into a cold water stream when only the cold faucet is open;

FIG. 17 is a schematic view of a pipe valve device for controlling a hot water circulation pipe according to the present invention, illustrating a flow path when a toilet bowl is used;

FIG. 18 is a schematic view of the installation location of the water heater, water circulation device and prior art "H-type hot and cold water connection" in a particular water plumbing environment, and the water flow path during operation of the water circulation device;

description of the main element symbols: a is the water point cold water inlet pipe mouth, B is the cold water import of water point muddy water valve, C is the water point hot water inlet pipe mouth, D is the hot water import of water point muddy water valve, E is the mounted position of the zero cold water heater that has the pressure boost function, F is the hot water export of water heater, G is the cold water import of water heater, H is the cold water house steward, I is the cold water pipe, J is the hot water pipe, K is the mounted position of the cold and hot water piping connection spare of installation prior art H type, L is other water points in same pipeline environment, M is the check valve, N is the position that the closestool is located.

Detailed Description

In order to better understand the technical scheme of the present invention, firstly, the water flow form and source which may occur in the "H-shaped cold and hot water pipe connection" in the prior art and the pipe valve device suitable for controlling the hot water circulation pipe (the pipe valve device suitable for controlling the hot water circulation pipe of the present invention is installed at the same position as the "H-shaped cold and hot water pipe connection" in the prior art, and is hereinafter collectively referred to as the "pipe valve device") installed in the specific pipe environment of the zero-cold water heater are explained, and the embodiments provided by the present invention are described in detail with reference to fig. 1 to 18.

The first embodiment is as follows: a pipe valve apparatus adapted for control of a hot water circulation pipe, comprising: the first transverse pipe 1, the first valve plate 4, the first spring 5 and the second spring 6; the first cross tube 1 comprises a first opening 2 and a second opening 3; the first valve plate 4 is slidably arranged in the first transverse pipe 1, the first spring 5 and the second spring 6 are arranged in the first transverse pipe 1, one end of the first spring 5 is connected with one side of the first valve plate 4, and one end of the second spring 6 is connected with the pipe wall of the first transverse pipe 1. The second spring 6 progressively influences and controls the opening and closing of the channel of the transverse pipe 1 on the basis of the dynamic working condition of the instant expansion and contraction of the first spring 5;

in the present embodiment, the resistance value of the second spring 6 is larger than that of the first spring 5; in other embodiments, the resistance values of the second springs 6 and the first springs 5 are different, but the positions can be interchanged;

when no water flow occurs in the first opening 2 and the second opening 3 and the pressures on the two sides are consistent, the first valve plate 4 is kept at the initial standby position and the second spring 6 is also kept at the initial standby position under the action of the first spring 5; (see FIG. 1)

When a water flow with gradually increased and lower pressure occurs on one side of the first opening 2 (the water flow is driven by a zero-cold-water heater circulating device), when the pressure of the water flow is greater than the resistance of the first spring 5, the first valve plate 4 is pushed to slide towards the second opening 3, the water flow flows to the second opening 3 along the gap between the first valve plate 4 and the pipe wall of the first transverse pipe 1, and when the first valve plate 4 slides to a position contacting the second spring 6 under the impact of the water flow, the water flow continuously flows to and flows out of the second opening 3 along the gap between the first valve plate 4 and the pipe wall of the first transverse pipe 1 because the pressure of the water flow is insufficient to overcome the resistance generated by the second spring 6 and the combination of the first spring 5 and the second spring 6; (see FIG. 2)

When a sudden and sudden momentary flow of water with a high pressure (from the water flow caused by opening a cold water faucet or using a toilet), occurs on one side of the first opening 2, the pressure of this flow of water is sufficient to overcome the resistance of the first spring 5, so that the first valve plate 4 is rapidly pushed to a position where it contacts the second spring 6, and when the pressure of this flow of water is greater than the combined resistance of the first spring 5 and the second spring 6, the first valve plate 4 is pushed to a position where it closes the second opening 3, closing the passage between the first opening 2 and the second opening 3, preventing this flow of water from passing through; (see FIG. 3)

When the water flow on one side of the first opening 2 disappears and the pressures on the two sides of the first opening 2 and the second opening 3 are recovered to be consistent, the first valve plate 4 is recovered to the initial standby position under the action of the first spring 5, the second spring 6 is also recovered to the initial standby position, and the channel between the first opening 2 and the second opening 3 is recovered to be unblocked; (see FIG. 1)

In the present invention, the first spring 5 acts to: firstly, the resistance of the first spring 5 can be counteracted by the water flow which is gradually increased and has larger flow rate but lower pressure, and the water flow can push the first valve plate 4 to smoothly flow to the second opening 3 (see fig. 2); secondly, when no water flow occurs in the first opening 2 and the second opening 3 and the pressures on the two sides are consistent, the first valve plate 4 is ensured to be in or return to the initial standby position (see fig. 1); the second spring 6 functions as: firstly, the gradual-enhanced water flow with larger flow but lower pressure (namely the water flow driven by the zero-cold water heater circulating device) is prevented from closing the water flow channel of the first transverse pipe 1, and the normal passing of the circulating water flow driven by the zero-cold water heater circulating device is interfered; secondly, when the first opening 2 generates sudden water flow with a certain flow rate and pressure greater than the resistance of the second spring 6, the first valve plate 4 can be pushed to a position for closing the second opening 3; the first spring 5 and the second spring 6 are functionally complementary to each other in a form dependent on each other, the first spring 5 is a working base of the second spring 6, and the second spring 6 is a functional complement of the first spring 5.

Under different application conditions, in other embodiments, a force adjusting knob of the first spring 5 or the second spring 6 can be provided; therefore, on the premise of ensuring that the water flow generated by the water heater circulating drive normally passes through, the source and the form of the instant water flow are automatically identified and effectively distinguished, the phenomenon that the water heater burner is ignited by the action error of using a flushing closestool or other cold water is eliminated, a user can feel more comfortable, and the application effect of saving more energy can be realized.

On the basis of the first embodiment, in the second embodiment, more specifically, the second spring 6 is arranged in parallel with the first spring 5, and the other end of the first spring 5 is connected with the pipe wall of the first transverse pipe 1; in an initial standby state, that is, no water flow occurs in the first transverse pipe 1, and when the pressures at both ends are equal, the other end of the second spring 6 does not contact with the first spring 5 and the first valve plate 4, in other embodiments, one section of the second spring 6 may be connected to the first valve plate 4, and the other end does not contact with the pipe wall of the first transverse pipe 1. In the present embodiment, the second spring 6 is shorter than the first spring 5, and the resistance value of the second spring 6 is larger than that of the first spring 5; (see FIG. 1)

In the present embodiment, the resistance value of the second spring 6 is larger than that of the first spring 5;

When a water flow with gradually increased and lower pressure occurs on one side of the first opening 2 (the water flow is driven by a zero-cold-water heater circulating device), when the pressure of the water flow is greater than the resistance of the first spring 5, the first valve plate 4 is pushed to slide towards the second opening 3, the water flow flows to the second opening 3 along the gap between the first valve plate 4 and the pipe wall of the first transverse pipe 1, and when the first valve plate 4 slides to a position contacting the second spring 6 under the impact of the water flow, the pressure of the water flow is insufficient to overcome the resistance generated by the second spring 6 and the combination of the first spring 5 and the second spring 6, the water flow continuously flows to the gap between the first valve plate 4 and the pipe wall of the first transverse pipe 1 and flows out of the second opening 3; (see FIG. 2)

When a sudden, instantaneous flow of water with a high pressure (from the water flow caused by opening a cold water tap or using a toilet) occurs on one side of the first opening 2, the pressure of this flow is sufficient to overcome the resistance of the first spring 5, so that the first valve plate 4 is rapidly pushed to a position where it contacts the second spring 6, and when the pressure of this flow is greater than the combined resistance of the first spring 5 and the second spring 6, the first valve plate 4 is pushed to a position where it closes the second opening 3, preventing the passage between the first opening 2 and the second opening 3; (see FIG. 3)

Therefore, on the premise of ensuring that the water flow generated by the water heater circulating drive normally passes through, the source and the form of the instant water flow are automatically identified and effectively distinguished, the phenomenon that the water heater burner is ignited by the action error of using a flushing closestool or other cold water is eliminated, a user can feel more comfortable, and the application effect of saving more energy can be realized.

On the basis of the first embodiment, in the third embodiment, more specifically, the other end of the second spring 6 is connected with the other end of the first spring 5 (see fig. 4); in the present embodiment, the resistance value of the second spring 6 is greater than that of the first spring 5, or the resistance value of the first spring 5 is greater than that of the second spring 6; therefore, on the premise of ensuring that the water flow generated by the water heater circulation driving normally passes through, the source and the form of the instant passing water flow are automatically identified and effectively distinguished, the phenomenon that the water heater burner is ignited by the action error of using the water flushing closestool or other cold water is eliminated, a user can feel more comfortable, and the application effect of saving more energy can be realized.

On the basis of the first embodiment, in the fourth embodiment, more specifically, the method further includes: the second valve plate 7 is slidably arranged in the first transverse pipe 1, one side of the second valve plate 7 is connected with the other end of the second spring 6, the other side of the second valve plate 7 is connected with the other end of the first spring 5, namely, the second valve plate 7 is arranged between the first spring 5 and the second spring 6, and the second valve plate 7 is larger than the second opening 3 and can cover the second opening 3;

when no water flow occurs in the first opening 2 and the second opening 3 and the pressures on both sides are consistent, the first valve plate 4 and the second valve plate 7 are kept at the initial standby positions under the action of the first spring 5 and the second spring 6; (see FIG. 5)

When a flow of water with a lower pressure, which is gradually decreased from the first opening 2 side (the flow of water is driven by the zero-water heater circulation device), occurs, since the pressure of the flow of water is greater than the resistance of the first spring 5 and less than the resistance of the second spring 6, the first valve plate 4 is firstly pressed by the first spring 5 towards the second opening 3 to make the first valve plate 4 close to the second valve plate 7, during which the water stored between the first valve plate 4 and the second valve plate 7 overflows in the process of being pressed, the first valve plate 4 is pressed close to the second valve plate 7 by the flow of water, but the flow of water is not enough to make the first valve plate 4 and the second valve plate 7 overcome the resistance of the second spring 6, and the second valve plate 7 cannot be continuously pushed to the position for closing the second opening 3, at this time, the flow of water flows along the gap between the first valve plate 4 and the second valve plate 7 and the first cross pipe 1 wall and flows towards and closes Continuously flows out of the second opening 3; (see FIG. 6)

When a sudden and high pressure water flow (from the water flow caused by opening a cold water faucet or using a toilet bowl) occurs on one side of the first opening 2, the first valve plate 4 is suddenly impacted, on the one hand, because the water quantity existing between the first valve plate 4 and the second valve plate 7 cannot rapidly overflow to the periphery (because of the surrounding of the cross pipe wall) when the first valve plate 4 is suddenly impacted, the sudden impact force acts on the second valve plate 7 and then acts on the second spring 6 through the first spring 5 between the first valve plate 4 and the second valve plate 7 and the water stored in the two compartments, so that the second valve plate 7 is forced to press the second spring 6 to approach the second opening 3, and when the pressure of the water flow is enough to overcome the resistance of the second spring 6, the second valve plate 7 is rapidly pushed to the position closing the second opening 3, closing the water flow channel between the first opening 2 and the second opening 3; (see FIG. 7)

In the present embodiment, the combined action of the second valve plate 7 and the first valve plate 4 significantly increases the reaction speed for closing the passage of the first horizontal pipe 1 when an instantaneous sudden water flow occurs, because when an instantaneous sudden water flow occurs and the pressure of the water is high, the first valve plate 4, the second valve plate 7, the first spring 5, and the stored water stored between the first valve plate 4 and the second valve plate 7 form a whole (when an instantaneous sudden water flow occurs, the stored water is squeezed by the first valve plate 4, but is limited by the annular surrounding of the first horizontal pipe 1, and is discharged to some extent, and a part of the impact force is directly transmitted to the second valve plate 7), and the movement stroke for closing the second opening 3 is shortened to some extent;

when the water flow pressure on the first opening 2 side disappears and the pressure on the two sides of the first opening 2 and the second opening 3 is recovered to be consistent, under the combined action of the first spring 5 and the second spring 6, the first valve plate 4 and the second valve plate 7 are recovered to the initial standby position, and the channel between the first opening 2 and the second opening 3 is recovered to be unblocked (see fig. 5); therefore, the source and the form of the water flow passing through the water heater in real time can be automatically identified and effectively distinguished while ensuring that the water flow generated by the circular driving of the water heater passes through normally, the phenomenon that the burner of the water heater is ignited by the action error of using a flushing toilet or other cold water is eliminated, a user can feel more comfortable, and the application effect of saving more energy can be realized.

On the basis of the fourth embodiment, in the fifth embodiment, more specifically, the first valve plate 4 is larger than the first opening 2, and can cover the first opening 2; in the present embodiment, the first opening 2 is of a closed design, the first valve plate 4 can be kept at an initial standby position limited by the first opening 2 under the action of the first spring 5, and when the first valve plate 4 is impacted by water flow from the side of the second opening 3, water flow from the side of the second opening 3 is prevented from flowing out of the first opening 2 (see fig. 1); therefore, the basic function of preventing water flow on one side of a cold water pipe from entering a hot water pipe by using an H-shaped cold and hot water pipeline connecting piece in the prior art can be realized, the source and the form of the instant water flow can be automatically identified and effectively distinguished on the premise of ensuring that the water flow generated by the circulating drive of the water heater normally passes through, the phenomenon that a water heater burner is ignited due to the action error of using a flushing toilet or other cold water is eliminated, a user can feel more comfortable, and the application effect of more energy saving can be realized.

On the basis of the first embodiment, in the sixth embodiment, a longitudinal partition plate 1a is arranged in the first transverse tube 1, the partition plate 1a divides the transverse tube 1 into a first channel 8 and a second channel 9, the first channel 8 comprises a third opening 2a and a fourth opening 3a, and the second channel 9 comprises a fifth opening 2b and a sixth opening 3 b; the first valve plate 4 is slidably arranged in the first channel 8, the first spring 5 is arranged in the first channel 8, one end of the first spring 5 is connected with the first valve plate 4, and the other end of the first spring is connected with the pipe wall of the first transverse pipe 1; the third valve plate 7a is slidably arranged in the second channel 9, the second spring 6 is arranged in the second channel 9, one end of the second spring 6 is connected with the third valve plate 7a, and the other end is connected with the tube wall of the first transverse tube 1; the first valve plate 4 is larger than the fourth opening 3a and covers the fourth opening 3a, and the third valve plate 7a is larger than the sixth opening 3b and covers the sixth opening 3 b.

In this embodiment, the resistance value of the second spring 6 is larger than that of the first spring 5, and in other embodiments, the resistance value of the first spring 5 may be larger than that of the second spring 6;

when no water flow occurs in the third opening 2a, the fifth opening 2b, the fourth opening 3a and the sixth opening 3b and the pressures on the two sides are consistent, the first valve plate 4 is kept at the initial standby position under the action of the first spring 5; the third valve plate 7a is held at an initial standby position by the second spring 6; (see FIG. 9)

When a flow of water with a lower pressure, which is gradually decreased from the beginning and is supplied from the driving of the zero-cold-water boiler cycle, occurs on the side of the third opening 2a and the fifth opening 2b, the first valve plate 4 is pushed toward the fourth opening 3a due to the pressure of the flow of water being greater than the resistance of the first spring 5, when the flow of water is insufficient to completely overcome the resistance of the first spring 5 to a position of completely closing the fourth opening 3a, the flow of water flows toward the fourth opening 3a and out through the gap between the first valve plate 4 and the pipe wall of the first passage 8 (see fig. 10), and when the flow of water is sufficient to overcome the resistance of the first spring 5, the flow of water pushes the first valve plate 4 to a position of closing the third opening 3a to block the first passage 8, and the flow of water pushes the fourth valve plate 7a to slide toward the sixth opening 3b, however, since the gradually-increasing lower-pressure water flow cannot completely overcome the resistance of the second spring 6 (the resistance of the second spring 6 is greater than that of the first spring 5), and cannot be pushed to a position closing the sixth opening 3b, in the completely-closed state of the first passage 8, the water flow can also continuously flow from the gap between the third valve plate 7a and the pipe wall of the second passage 9 to the sixth opening 3b and flow out of the sixth opening 3 b;

when a sudden and sudden flow of water (from the cold water faucet or the toilet) occurs on one side of the third opening 2a and the fifth opening 2b, the first valve plate 4 and the third valve plate 7a are impacted by the flow of water, because the pressure of the flow of water is greater than the resistance of the first spring 5, the first valve plate 4 is rapidly pushed to the position closing the fourth opening 3a, the first channel 8 is blocked, at this time, the instant when the first channel 8 is closed causes the flow rate of water to be instantly increased and intensively pressed to the third valve plate 7a, and when the pressure is enough to overcome the resistance of the second spring 6, the third valve plate 7a is pushed to the position closing the sixth opening 3b, the third opening 2a and the fourth opening 3a are completely blocked, and the channel between the fifth opening 2b and the sixth opening 3b is completely blocked I.e. the channels of the cross tube 1); (see FIG. 11)

When the water flow pressure at one side of the third opening 2a and the fifth opening 2b disappears, and the pressure at the two sides of the third opening 2a and the fifth opening 2b is recovered to be consistent with the pressure at the two sides of the fourth opening 3a and the sixth opening 3b, under the action of the first spring 5, the first valve plate 4 is recovered to the initial standby position, under the action of the second spring 6, the third valve plate 7a is recovered to the initial standby position, and the first channel 8 and the second channel 9 are recovered to be unblocked (see fig. 9); therefore, on the premise of ensuring that the water flow generated by the water heater circulating drive normally passes through, the source and the form of the instant water flow passing through can be automatically identified and effectively distinguished, the phenomenon that the water heater burner is ignited by the error action of using a flushing toilet or other cold water is eliminated, a user can feel more comfortable, and the application effect of saving more energy can be realized.

In addition to the sixth embodiment, in the seventh embodiment, more specifically, the first valve plate 4 is larger than the third opening 2a, and can cover the third opening 2a to prevent the water on the side of the fourth opening 3a from flowing to the third opening 2 a; the third valve plate 7a is larger than the fifth opening 2b and can cover the fifth opening 2b to prevent water from flowing to the fifth opening 2b on the side of the sixth opening 3 b;

therefore, the basic function of preventing water flow on one side of a cold water pipe from entering a hot water pipe by using an H-shaped cold and hot water pipeline connecting piece in the prior art can be realized, the source and the form of the instant water flow can be automatically identified and effectively distinguished on the premise of ensuring that the water flow generated by the circulating drive of the water heater normally passes through, the phenomenon that a water heater burner is ignited due to the action error of using a flushing toilet or other cold water is eliminated, a user can feel more comfortable, and the application effect of more energy saving can be realized.

In addition to the above embodiments, in an eighth embodiment, the method further includes: a second transverse pipe 10, a first tee 11 and a second tee 12; the first transverse pipe 1 is arranged in the second transverse pipe 10; one end of the second transverse pipe 10 is connected with a seventh opening 13 of the first tee joint 11, and the other end of the second transverse pipe is connected with a tenth opening 16 of the second tee joint 12; the eighth opening 14 of the first tee joint 11 is connected with a cold water inlet A of a water point using water, the ninth opening 15 is connected with a cold water inlet B of a water point using water mixing valve, the eleventh opening 17 of the second tee joint 12 is connected with a hot water inlet C of a water point using water, and the twelfth opening 18 is connected with a hot water inlet D of the water point using water mixing valve; (see FIG. 12)

The pipe valve device suitable for controlling the hot water circulating pipeline provided by the invention can replace an H-shaped cold and hot water pipeline connecting piece in the prior art, when the water heater is used in a compatible mode with a zero-cold water heater in a pipeline environment without a pre-installed hot water return pipe, on the basis of the basic function that water flow on one side of a cold water pipe is prevented from entering a hot water pipe by an H-shaped cold and hot water pipeline connecting piece in the prior art (see figure 12), the water heater has the technical effects of automatically identifying and effectively distinguishing the source and the form of the instant water flow and pertinently making an opening and closing water flow channel reaction action, not only can the normal passing of the water flow generated by the circular driving of the water heater be ensured (see figure 13), but also the phenomenon that a water heater burner is ignited by using a flushing toilet or other cold water actions (see figure 14) can be eliminated, a user can feel more comfortable, and the application effect of more.

While the above embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments and applications illustrated in the drawings.

Claims

1. A tubular valve device suitable for control of a hot water circulation pipeline, comprising: the valve comprises a first transverse pipe (1), a first valve plate (4), a first spring (5) and a second spring (6); the first transverse pipe (1) comprises a first opening (2) and a second opening (3);

the first valve plate (4) is slidably arranged in the first transverse pipe (1), the first spring (5) and the second spring (6) are arranged in the first transverse pipe (1), one end of the first spring (5) is connected with one side of the first valve plate (4), and one end of the second spring (6) is connected with the pipe wall of the first transverse pipe (1).

2. The pipe valve device suitable for the control of a hot water circulation pipe according to claim 1, characterized in that the second spring (6) is arranged in parallel with the first spring (5), the other end of the first spring (5) is connected with the pipe wall of the first cross pipe (1), and the other end of the second spring (6) is not in contact with the first spring (5) and the first valve plate (4).

3. The pipe valve device adapted to control a hot water circulation pipe according to claim 1, wherein the other end of the second spring (6) is connected with the other end of the first spring (5).

4. The tubular valve device suitable for the control of a hot water circulation pipeline according to claim 1, characterized by further comprising a second valve plate (7), wherein the second valve plate (7) is slidably arranged in the first transverse pipe (1), one side of the second valve plate (7) is connected with the other end of the second spring (6), the other side of the second valve plate (7) is connected with the other end of the first spring (5), and the second valve plate (7) is larger than the second opening (3).

5. The tubular valve device suitable for the control of hot water circulation pipes according to claim 1, characterized in that said first valve plate (4) is larger than said first opening (2).

6. The pipe valve device suitable for the control of hot water circulation pipes according to claim 1, characterized in that a longitudinal partition plate (1a) is arranged in the first cross pipe (1), the partition plate (1a) divides the cross pipe (1) into a first channel (8) and a second channel (9), the first channel (8) comprises a third opening (2a) and a fourth opening (3a), the second channel (9) comprises a fifth opening (2b) and a sixth opening (3 b);

the first valve plate (4) is arranged in the first channel (8) in a sliding mode, the first spring (5) is arranged in the first channel (8), one end of the first spring (5) is connected with the first valve plate (4), and the other end of the first spring is connected with the pipe wall of the first transverse pipe (1); the third valve plate (7a) is arranged in the second channel (9) in a sliding manner, the second spring (6) is arranged in the second channel (9), one end of the second spring (6) is connected with the third valve plate (7a), and the other end of the second spring is connected with the pipe wall of the first transverse pipe (1); the first valve plate (4) is larger than the fourth opening (3a), and the third valve plate (7a) is larger than the sixth opening (3 b).

7. The tubular valve device suitable for the control of hot water circulation pipes according to claim 6, characterized in that said first valve plate (4) is larger than said third opening (2 a); the third valve plate (7a) is larger than the fifth opening (2 b).

8. The pipe valve device suitable for the control of a hot water circulation pipe according to claim 1, further comprising a second cross pipe (10), a first tee (11) and a second tee (12); the first transverse pipe (1) is arranged in the second transverse pipe (10); one end of the second transverse pipe (10) is connected with a seventh opening (13) of the first tee joint (11), and the other end of the second transverse pipe is connected with a tenth opening (16) of the second tee joint (12);

the eighth opening (14) of the first tee joint (11) is connected with a cold water inlet (A) of a water point, the ninth opening (15) is connected with a cold water inlet (B) of a water point mixing valve, the eleventh opening (17) of the second tee joint (12) is connected with a hot water inlet (C) of a water point, and the twelfth opening (18) is connected with a hot water inlet (D) of the water point mixing valve.