CN115597237A - Control method of gas water heater - Google Patents

Abstract

The invention discloses a control method of a gas water heater, the gas water heater comprises a heating mechanism, a water inlet main pipe, a water outlet main pipe, a bypass pipe and a flow regulating valve, the heating mechanism is provided with a water inlet end and a water outlet end, the water inlet end of the flow regulating valve is connected with the water inlet main pipe, two water outlet ends of the flow regulating valve are respectively correspondingly connected with the water inlet end of the heating mechanism and the bypass pipe, one path of the water outlet main pipe is connected with the water outlet end of the heating mechanism, the other path of the water outlet main pipe is connected with the bypass pipe, and the control method of the gas water heater comprises the following steps: entering a bypass adjustment condition judgment step, and entering a bypass adjustment step when the bypass adjustment condition is met; and a bypass adjusting step, namely acquiring the bypass ratio of the flow regulating valve, and adjusting the flow of the flow regulating valve entering the water inlet end of the heating mechanism and entering the bypass pipe according to the bypass ratio. According to the method, the proportion of the high-temperature water and the low-temperature water can be accurately controlled by obtaining the bypass ratio of the flow regulating valve, and the method is favorable for maintaining the constant outlet water temperature of the outlet water main pipe.

Description

Control method of gas water heater

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a control method of a gas water heater.

Background

At present, water heaters are household appliances commonly used in daily life of people, and the water heaters can be divided into gas water heaters, electric water heaters and solar water heaters according to different heat sources. During the use process, the hot water output by the water heater is output for the user to use through a user terminal (such as a faucet or a shower head).

In the actual use process of the water heater, when the water is turned off for a short time and hot water is reused, the water temperature changes. Taking a gas water heater as an example, in a normal use process, when a user closes water and opens the water again, a process that the water temperature rises first and then falls and then is stable exists, and then the use experience of the user is influenced.

In view of this, how to provide a control method for a gas water heater, which can provide effluent water with constant temperature under different operating conditions, is a technical problem to be solved by the present invention.

Disclosure of Invention

The invention provides a control method of a gas water heater, which aims at solving the technical problem that the temperature fluctuation of outlet water is easy to occur in some use scenes in the prior art, so that the outlet water is over-cooled or over-heated.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

a control method of a gas water heater comprises a heating mechanism, a water inlet main pipe, a water outlet main pipe, a bypass pipe and a flow regulating valve, wherein the heating mechanism is provided with a water inlet end and a water outlet end, the water inlet end of the flow regulating valve is connected with the water inlet main pipe, two water outlet ends of the flow regulating valve are respectively correspondingly connected with the water inlet end of the heating mechanism and the bypass pipe, one of the water outlet main pipes is connected with the water outlet end of the heating mechanism, and the other water outlet main pipe is connected with the bypass pipe, and the control method of the gas water heater comprises the following steps:

entering a bypass adjustment condition judgment step, and entering a bypass adjustment step when the bypass adjustment condition is met;

and a bypass adjusting step of obtaining a bypass ratio of the flow regulating valve and adjusting the flow of the flow regulating valve entering the water inlet end of the heating mechanism and the flow of the flow regulating valve entering the bypass pipe respectively according to the bypass ratio.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the control method of the gas water heater, the flow of the two water outlet ends is adjusted through the flow adjusting valve, the flow entering the heating mechanism and the flow entering the bypass pipe can be respectively controlled, the water entering the bypass pipe is cold water and is used for being mixed with high-temperature water output by the heating mechanism, the water outlet temperature of the water outlet main pipe is reduced when the temperature of the water output by the heating mechanism is too high, particularly when the water is shut off for a set time and is reused, the fluctuation range of the water outlet temperature can be reduced, and the shower experience of a user is improved.

Through obtaining the bypass ratio of flow control valve, can control the proportion of high temperature water and low-temperature water accurately, be favorable to maintaining the invariable of the outlet water temperature of outlet water house steward.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a flow control valve of the present invention

FIG. 2 is a schematic view of a partial structure of an embodiment of a flow control valve according to the present invention;

FIG. 3 is a partial exploded view of an embodiment of the flow control valve of the present invention;

FIG. 4 is a partial cross-sectional view of an embodiment of the flow control valve of the present invention;

FIG. 5 is a schematic view of a valve housing of an embodiment of the flow control valve of the present invention;

FIG. 6 is a second schematic view of the valve housing of the flow control valve of the present invention;

FIG. 7 is a cross-sectional view of a valve housing in an embodiment of the flow control valve of the present invention;

FIG. 8 is a schematic structural diagram of a first blocking member in an embodiment of a flow control valve according to the present invention;

FIG. 9 is a second schematic view of a first shielding member in an embodiment of a flow control valve according to the present invention;

FIG. 10 is a schematic view of the flow control valve of the present invention in a first position;

FIG. 11 is a schematic view of the flow control valve of the present invention between a first position and a second position;

FIG. 12 is a schematic view of the flow control valve of the present invention in a second position;

FIG. 13 is a schematic view of the flow control valve of the present invention between the second position and the third position;

FIG. 14 is a schematic view of the flow control valve of the present invention in a third position;

FIG. 15 is a schematic diagram of a water heater according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The embodiment provides a control method of a gas water heater, the gas water heater adopted by the control method is shown in fig. 15, and comprises a heating mechanism 3000, a water inlet main pipe 1000, a water outlet main pipe 2000, a bypass pipe 5000 and a flow regulating valve 4000, wherein the heating mechanism 3000 is provided with a water inlet end and a water outlet end, the water inlet end 151 of the flow regulating valve 4000 is connected with the water inlet main pipe 1000, the flow regulating valve 4000 is provided with two water outlet ends, one water outlet end is connected with the water inlet end of the heating mechanism, the other water outlet end is connected with the bypass pipe 5000, one path of the water outlet main pipe 2000 is connected with the water outlet end of the heating mechanism, and the other path of the water outlet main pipe 2000 is connected with the bypass pipe 5000.

The water inlet main pipe 1000 is used for connecting a tap water pipe, and cold water entering from tap water can only flow into the water inlet end of the heating mechanism through the adjustment of the flow adjusting valve 4000, and can also be divided into two paths, wherein one path flows into the water inlet end of the heating mechanism, and the other path flows into the bypass pipe 5000. Moreover, the flow regulating valve 4000 can also regulate the flow ratio of the two water outlet ends.

When no cold water enters the bypass pipe 5000, the hot water output from the water outlet end of the heating mechanism 3000 enters the water outlet main pipe 2000 to be directly supplied to the user. When cold water enters the bypass pipe 5000, the cold water in the bypass pipe 5000 is mixed with hot water output from the water outlet end of the heating mechanism 3000, and the mixed water is supplied to a user through the water outlet main pipe 2000.

When the gas water heater is initially started to work or is started to work again after a long time from the previous water using time, the temperature of the heating mechanism 3000 is low, after ignition and combustion are started, water output from the water outlet end of the gas water heater passes through a process of low temperature firstly and then gradually rising to be close to the set temperature, and under the working condition, the bypass pipe 5000 does not need to be opened to enter cold water to be mixed with the outlet water of the heating mechanism.

When the gas water heater is in the course of working, the user turns off the water to when opening the water once more in a certain period, heating mechanism 3000 is still hot this moment, can make some hot water rise after opening the water ignition once more, is higher than the settlement temperature, then reduces and tends to the settlement temperature gradually, if open the water ignition once more after directly exporting for the user, the body of user is relatively poor, has the risk that the user is scalded by high temperature water moreover. At this time, the cold water can be introduced through the bypass pipe 5000, and mixed with the hot water output from the water outlet of the heating mechanism 3000 to be supplied to the user, thereby avoiding the above-mentioned problems.

In some embodiments of the invention, a gas water heater control method comprises:

entering a bypass adjustment condition judgment step, and entering a bypass adjustment step when the bypass adjustment condition is met;

and a bypass adjusting step, namely acquiring the bypass ratio of the flow regulating valve, and adjusting the flow of the flow regulating valve respectively entering the water inlet end of the heating mechanism and the flow of the flow regulating valve entering the bypass pipe according to the bypass ratio.

The bypass regulation is not required to be started at any time, so that the conditions for entering the bypass regulation are set in some embodiments of the invention, and when the conditions for entering the bypass regulation are judged to be met, the water flow of one path of the bypass pipe 5000 can be started.

In some embodiments of the present invention, the purpose of opening the bypass adjustment is to reduce the temperature of the outlet water of the heating mechanism 3000 and prevent the temperature from being too high, so to achieve the purpose of reducing the temperature of the mixed water, the flow adjusting valve 4000 has at least two adjustment manners, one is a manner of heating by reducing the amount of water entering the heating mechanism 3000, and the other is a manner of increasing the amount of cold water entering the bypass pipe 5000.

In some embodiments of the present invention, the step of determining the condition for entering the bypass adjustment comprises:

and judging whether water is shut down or zero-cold-water circulation heating is stopped, and entering a bypass adjusting step when any condition of water shut down or zero-cold-water circulation heating is met.

The water is shut down, that is, the gas water heater is in operation, and the user shuts down the water, and the water is shut down in the using process because of the conventional operations of some personal requirements of the user, such as stopping the water midway, adding soap, adding shower gel, washing hair and the like. The sudden rise of the water outlet temperature of the starting water generally occurs when the water is turned off and turned on again midway, so that whether the water is turned off or not is judged as one of the conditions for entering the bypass regulation, and the accurate control is realized.

Zero cold water circulation heating generally appears in the non-use gas heater in-process of user, in order to can open the water or export warm water when using water for a long time before apart from for the first time at the user, when not using gas heater, carry out zero cold water heating circulation for the cold water in the circulation heating pipeline. The bypass pipe 5000 cannot be opened during the zero cold water circulation, and therefore, the stop of the zero cold water circulation heating is used as another condition for judging the bypass adjusting step in the present embodiment.

Through the two conditions, the condition that the bypass adjusting step is impossible to enter can be eliminated, and the primary screening control enters the bypass adjusting step.

In some embodiments of the present invention, before determining whether to stop water supply or stop zero-cycle cold water heating, the method further comprises:

acquiring the water outlet temperature of the heating mechanism;

and judging whether the water outlet temperature of the heating mechanism exceeds a lower limit value of a preset temperature or not, and judging whether water is shut down or whether zero-cold-water circulation heating is stopped or not when the water outlet temperature of the heating mechanism exceeds a first lower limit value of the preset temperature.

The bypass regulation is opened to the aforesaid this scheme especially to the too high condition of the leaving water temperature of heating mechanism, the condition of the leaving water temperature of heating mechanism is further judged through this embodiment, even if two aforementioned conditions satisfy, when the leaving water temperature of heating mechanism is not too high, still need not get into the bypass and adjust the step, consequently, this judgement step can further reduce the scope that can get into the bypass and adjust, avoid appearing the mistake and get into the bypass and adjust and lead to the circumstances that the leaving water temperature of water main pipe 2000 is crossed lowly, it is counterproductive to suit.

In some embodiments of the present invention, the bypass adjusting step further comprises: and judging whether the water is opened again within the set time length, and determining the condition of exiting the bypass adjusting step according to the current entering condition of entering the bypass adjustment when the water is not opened again.

The important condition of entering the bypass adjusting step in the scheme is that the time for turning off the water supply is not too long when the water supply is started again, and if the time is too long, the temperature of the heating mechanism 3000 is naturally reduced, so that the condition that the temperature of the outlet water is increased when the water supply is started again can not occur. And then when the water is not started again within the set time, the condition of exiting the bypass adjusting step is met, and the power consumption of the gas water heater is reduced.

The current entry conditions for entering the bypass regulation include two conditions, wherein one is to judge whether water is shut down, and the other is to stop zero-cooling water circulation heating.

In some embodiments of the invention, if the entry condition for entering the bypass adjustment is that entry of water is satisfied with shutdown, the condition for exiting the bypass adjustment step is:

and when the water outlet temperature of the heating mechanism is lower than a second lower limit value, the bypass adjusting step is quitted, and the second lower limit value is smaller than the first lower limit value.

In some embodiments of the invention, if the entry condition for entering the bypass regulation is that zero cold water circulation heating is stopped, the condition for exiting the bypass regulation step is:

and when the water outlet temperature of the heating mechanism is lower than a third lower limit value, the bypass adjusting step is quitted, and the third lower limit value is larger than the second lower limit value and smaller than the first lower limit value.

That is, if the entry condition for entering the bypass adjustment is to satisfy the entry of the water supply shut-off, the bypass adjustment step is exited when the temperature of the outlet water of the front heating mechanism is lower than a relatively small temperature threshold value, because the water supply enters the bypass adjustment due to the water supply shut-off halfway, and therefore there is a certain probability that the user will start the water supply again, the flow control valve 4000 for performing the bypass adjustment when the user starts the water supply again is prepared at any time by setting the threshold of the exit condition higher.

If the entering condition of entering the bypass regulation is that the entering condition of stopping zero cold water circulation heating is met, the bypass regulation step is exited when the outlet water temperature of the front heating mechanism is lower than a relatively high temperature threshold value, because the fact that the zero cold water circulation heating is stopped means that the user does not use water, and the temperature of the zero cold water circulation heating is not too high, the bypass regulation step is exited by setting the threshold of the exiting condition to be lower and meeting the requirement.

In some embodiments of the invention, the first lower limit = T0+2 ℃, where T0 represents the set temperature.

The second lower limit = T0-5 ℃.

The third lower limit = T0-2 ℃.

In some embodiments of the present invention, the method further includes determining whether to exit the bypass adjusting step according to a water flow entering the water inlet end of the heating mechanism corresponding to the current position of the flow regulating valve, and determining to exit the bypass adjusting step when the water flow satisfies a set condition.

The set outlet temperature T0 is a constraint on the outlet temperature of the outlet main pipe 2000, so that the closer the outlet temperature of the outlet main pipe 2000 is to the set outlet temperature T0, the better the effect is.

In some embodiments of the present invention, the bypass ratio is determined by:

h= S* (T2-T0)/(T2-T1)；

wherein T2 is the outlet water temperature of the heating mechanism, T1 is the inlet water temperature of the inlet water main pipe, T0 is the set temperature, and S is the preset coefficient.

In some embodiments of the invention, in the step of judging whether to start water again within a set time length, when the water is started again, the continuous water use time of the water is timed and judged, and when the continuous water use time does not exceed the first set time, the bypass adjusting step is continuously carried out;

and when the continuous water using time exceeds the first set time, continuously judging whether the continuous water using time exceeds a second set time, and when the continuous water using time exceeds the second set time, exiting the bypass adjusting step.

And when the continuous water using time does not exceed the second set time, acquiring the current bypass ratio, and judging whether to exit the bypass adjusting step according to the current bypass ratio, wherein the first set time is less than the second set time.

In some embodiments of the present invention, the step of determining whether to exit the bypass adjustment step according to the current bypass ratio comprises:

when the bypass ratio is not greater than the first bypass ratio set point, the bypass adjustment step is directly exited.

And when the bypass ratio is not greater than the second bypass ratio set value and the outlet water temperature of the heating mechanism is lower than the fourth lower limit value, the bypass adjusting step is exited.

Example two

The present embodiment proposes a flow rate adjustment valve 4000, as shown in fig. 1 to 14, including:

the water outlet device comprises a valve shell 1, wherein a water inlet end 11, a first water outlet end 12 and a second water outlet end 13 are arranged on the valve shell 1;

the valve core assembly 2, the valve core assembly 2 comprises a driving component 21, a first flow control component 22 and a second flow control component 23, the first flow control component 22 and the second flow control component 23 are arranged in the valve housing 1, the first flow control component 22 is arranged at the first water outlet end 12 and is used for controlling the flow of the first water outlet end 12, and the second flow control component 23 is arranged at the second water outlet end 13 and is used for controlling the flow of the second water outlet end 13;

wherein the flow regulating valve has a first position, a second position and a third position;

in the process that the flow regulating valve operates from the first position, the second position and the third position in sequence, the driving part 21 is used for driving the first flow control part 22 to gradually reduce the flow of the first water outlet end 12, and in the process of reverse operation, the driving part 21 is used for driving the first flow control part 22 to gradually increase the flow of the first water outlet end 12;

in the process that the flow regulating valve runs from the second position to the third position, the driving part 21 is used for driving the second flow control part 23 to gradually increase the flow of the first water outlet end 12, and in the process of reverse running, the driving part 21 is used for driving the second flow control part 23 to gradually decrease the flow of the first water outlet end 12.

Specifically, the flow control valve is assembled by the valve housing 1 and the valve core assembly 2, wherein the valve housing 1 is configured with a water inlet end 11, a first water outlet end 12 and a second water outlet end 13, so that the valve housing 1 has a three-way structure as a whole.

During assembly, the driving component 21, the first flow control component 22 and the second flow control component 23 are assembled on the valve housing 1, the driving component 21 can drive the first flow control component 22 and the second flow control component 23 to move in the valve housing 1, the moving first flow control component 22 can adjust the water outlet flow of the first water outlet end 12, and similarly, the second flow control component 23 can adjust the water outlet flow of the second water outlet end 13.

The flow regulating valve has three specific positions, specifically: when the flow regulating valve is in the first position, the first flow control part 22 controls the first water outlet end 12 to be in the maximum opening degree, and the second flow control part 23 closes the second water outlet end 13; when the flow regulating valve is in the second position, the second flow control component 23 is in a critical state for switching the second water outlet end 13; when the flow control valve is in the third position, the first flow control part 22 controls the first water outlet end 12 to be at the minimum opening degree, and the second flow control part 23 controls the second water outlet end 13 to be at the maximum opening degree.

In an embodiment of the present application, during the operation of the flow control valve from the first position to the second position, the second flow control component 23 closes the second water outlet end 13, and during the reverse operation, the second flow control component 23 closes the second water outlet end 13.

In the practical application process, the flow regulating valve is installed on the water heater. For a water heater, the water heater generally comprises a water heater main body, wherein the water heater main body is provided with a total water inlet port and a total water outlet port, a heating mechanism and the flow regulating valve; the inlet pipe of the flow regulating valve is connected with the main water inlet port, the first water outlet pipe of the flow regulating valve is connected with the inlet of the heating mechanism, and the second water outlet pipe of the flow regulating valve and the outlet of the heating mechanism are respectively connected with the main water outlet port. The main water inlet port is connected with a water supply pipe (such as a tap water pipe) in the home of the user, and the main water outlet port is connected with a water using terminal (such as a shower or a faucet) through the water pipe in the home of the user.

In a specific use process, the water using terminal is opened to output hot water outwards, and at the moment, the heating mechanism is started to heat water flowing through.

As shown in fig. 10-14, the dashed arrows represent the direction of water flow.

During normal heating, as shown in fig. 10, the flow regulating valve is in the first position, and at this time, the first flow control component 22 regulates the first water outlet end 12 to be at the maximum opening degree, so as to obtain the maximum water flow; meanwhile, the second flow control member 23 is in a position for closing the second water outlet end 13, i.e. the bypass flow path is in a blocking position.

In the normal water using process, the power of the heating mechanism is reduced due to the influence of external factors, and at this time, the flow rate of the first water outlet end 12 needs to be adjusted. At this time, the flow regulating valve will change between the first position and the second position. As shown in fig. 11, the driving component 21 acts to drive the first flow control component 22 and the second flow control component 23 to act, and the first flow control component 22 correspondingly adjusts the opening degree of the first water outlet end 12 to reduce the water flow rate so as to maintain the water temperature output by the water heater to be constant; whereas the second outlet end 13 is not opened for the second flow control member 23. In the process, the driving part 21 drives the first flow control part 22 to move in the forward and reverse directions according to the difference value between the outlet water temperature of the water heater and the set temperature, so as to dynamically adjust the outlet water temperature.

In the case of a water heater with a continuously higher outlet temperature, the water flow into the heating mechanism needs to be further reduced, and the bypass water flow is turned on. At this time, the flow regulating valve will change between the second position and the third position, the driving part 21 will operate to drive the first flow controlling part 22 and the second flow controlling part 23 to operate, the first flow controlling part 22 will correspondingly decrease the opening degree of the first water outlet end 12 to decrease the water flow, and correspondingly, the first flow controlling part 22 will correspondingly increase the opening degree of the first water outlet end 12 to increase the water flow. Therefore, in the process of changing the water control device between the second position and the third position, the water flow proportion of the first water outlet end 12 and the second water outlet end 13 can be regulated, and the bypass ratio is further dynamically regulated, so that the water temperature output by the water heater is kept constant.

In addition, when a user normally uses the water heater and uses water for a second time in a short time, the flow regulating valve changes between the second position and the third position to reduce the flow rate of cold water flowing into the heating mechanism, the mixing ratio of hot water and cold water output by the heating mechanism is increased to increase the lowest temperature of water flowing out of the water heater, the highest temperature of water flowing out of the water heater is reduced, the requirement of constant-temperature water outlet of the water heater is met, and the shower experience of the user is improved.

In an embodiment of the present application, the first flow control member 22 includes a rotating moving member 221 and a first shielding member 222, and the first shielding member 222 is disposed on the rotating moving member 221;

the second flow control member 23 includes a mounting member 231 and a second shielding member 232, and the second shielding member 232 is disposed on the mounting member 231;

the driving member 21 is connected to the rotating moving member 221 and is used for driving the rotating moving member 221 to rotate, the rotating moving member 221 rotates relative to the valve housing 1 and also moves relative to the valve housing 1, the first shielding member 222 is disposed in the valve housing 1 and located at one side of the first water outlet end 12, the mounting member 231 is slidably disposed on the rotating moving member 221, and the second shielding member 232 is disposed opposite to the second water outlet end 13.

Specifically, as for the first flow control member 22, the rotational movement member 221 is connected to the driving member 21 outside the valve housing 1 to rotate the rotational movement member 221 by the driving member 21. While the rotationally displaceable part 221 is driven in rotation relative to the valve housing 1 by the drive member 21, the rotationally displaceable part 221 can also be displaced along its axis relative to the valve housing 1.

Thus, for the process of adjusting the opening of the first water outlet end 12 to control the water flow, the first shielding member 222 is arranged at the nozzle side of the first water outlet end 12, and the flow of the first water outlet end 12 is adjusted in a rotating manner. The first blocking component 222 adjusts the flow rate of the first water outlet end 12 in a rotating manner, so that the flow rate adjustment is more accurate, and the requirement of gradual step-by-step adjustment is met, so as to meet the requirement of adjusting the flow rate of water entering the heating mechanism under different working conditions of the water heater.

In the process of adjusting the opening of the second water outlet end 13 to control the flow rate of water, the second shielding member 232 is disposed opposite to the nozzle of the second water outlet end 13, and the flow rate of the second water outlet end 13 is adjusted by relative movement. The second shielding part 232 adjusts the flow of the second water outlet end 13 in a relative movement manner, so that the flow adjustment is more efficient, the water temperature can be rapidly adjusted, and the water heater can meet the requirement of constant-temperature water outlet.

In another embodiment of the present application, the first shielding member 222 is a sleeve structure, a water flow passage is formed between the first shielding member 222 and the rotating member 221, and a water flow opening 2221 is formed in a side wall of the first shielding member 222; the water flowing into the water inlet end 11 flows into the first water outlet end 12 through the water flow channel and the water through port 2221 in sequence.

Specifically, in order to conveniently adjust the flow rate of the first water outlet end 12 in a rotating manner, the first shielding member 222 adopts a sleeve structure, the first shielding member 222 is disposed on the rotating moving member 221 and rotates along with the rotating moving member, the water through opening 2221 can rotate relative to the pipe orifice of the first water outlet end 12, during the rotation process, the overlapping area of the water through opening 2221 and the pipe orifice of the first water outlet end 12 changes, and the flow rate of the first water outlet end 12 is dynamically adjusted.

In one embodiment, the first shielding member 222 further includes a water groove 2222 on the outer surface of the sidewall thereof for communicating with the water opening 2221, and the water groove 2222 extends around the axis of the rotational movement member 221 in a direction away from the water opening 2221.

Specifically, in the adjusting process, the water flow of the first water outlet end 12 can be adjusted quickly by adjusting the overlapping area of the water through opening 2221 and the pipe orifice of the first water outlet end 12. After the water through opening 2221 and the nozzle of the first water outlet end 12 are staggered, the water tank 2222 and the nozzle of the first water outlet end 12 are kept in a communicated state, so that the water flow can be adjusted more accurately through the water tank 2222.

In one embodiment, the water flow cross-sectional area of the water tank 2222 gradually decreases in a direction away from the water opening 2221 around the axis of the rotational movement member 221. Specifically, the water flow cross-sectional area of the water tank 2222 is gradually changed, so that the water flow at the pipe orifice of the first water outlet pipe can be more finely and accurately adjusted in the process that the driving part 21 drives the rotating moving part 221 to rotate in one direction.

The basin 2222 of gradual change structure can reach more accurate regulation carrying out the high accuracy bypass and than the adjustment in-process, and then the accurate outlet water temperature who adjusts the water heater to satisfy more accurate temperature and adjust.

In some embodiments, a first partition 121 is disposed in the first water outlet end 12, a first water outlet 122 is disposed on the first partition 121, and the first water outlet 122 is used for communicating with the water through port 2221 and the water tank 2222.

Specifically, in order to conveniently control the opening degree of the first water outlet end 12 to precisely adjust the water flow, the first partition 121 is provided with a first water outlet 122 matching with the water inlet 2221 and the water tank 2222. During the rotation of the first blocking member 222 following the rotation moving member 221, the water through opening 2221 and the water tank 2222 can rotate relative to the first water outlet 122 and communicate with each other, so as to control the outlet flow of the first outlet end 12 more precisely.

In some embodiments, the first partition 121 is further provided with an auxiliary water outlet 123, and the water inlet end 11 is communicated with the auxiliary water outlet 123.

Specifically, the auxiliary water outlet 123 is disposed on the first partition 121, and the auxiliary water outlet 123 is in a normally open state and is always communicated with the water inlet end 11, so that the basic water flow requirement of the first water outlet end 12 can be ensured through the auxiliary water outlet 123.

The first water outlet 122 may be a strip-shaped hole, and the strip-shaped hole extends around the axial direction of the rotating and moving member 221.

Specifically, the first water outlet 122 of the strip-shaped hole structure can be better matched with the water through opening 2221 and the water tank 2222 on the first shielding part 222, and in the rotating process of the first shielding part 222, the water through opening 2221 and the water tank 2222 are sequentially overlapped and matched along the length direction of the first water outlet 122, so that the matching degree can be improved, and the effect of accurately controlling the water flow rate can be met.

Since the first partition 121 is provided with the first water outlet 122 and the auxiliary water outlet 123, in order to more precisely control and adjust the water flow rate of the first water outlet end 12, the first water outlet 122 is sequentially communicated with the water through port 2221 and the water tank 2222 during the sequential operation of the flow rate adjustment valve from the first position, the second position and the third position.

In another embodiment, a second partition 131 is disposed in the second water outlet end 13, and a second water outlet 132 is disposed on the second partition 131.

Specifically, for the second water outlet end 13, in order to meet the requirement of accurately regulating the water flow, a second partition plate 131 may be disposed inside the second water outlet end 13, a second water outlet 132 is correspondingly disposed on the second partition plate 131, and the second water outlet 132 is disposed opposite to the second flow control member 23. During the flow control process, the second flow control part 23 moves along with the rotating moving part 221, and the second shielding part 232 in the second flow control part 23 can open and close the second water outlet 132 during the moving process, and the precise adjustment of the water flow of the second water outlet 132 is realized by controlling the distance between the second shielding part 232 and the second water outlet 132.

In one embodiment, the water outlet areas of the auxiliary water outlet 123 and the second water outlet 132 are designed to be the same, so that after the flow rate regulating valve is at the third position, the first water outlet 122 is blocked by the first blocking part 222, the first water outlet end 12 feeds water through the auxiliary water outlet 123, and meanwhile, the second water outlet 132 of the second water outlet end 13 is completely opened. So as to realize that the water outlet flow rates of the auxiliary water outlet 123 and the second water outlet 132 are substantially the same, and further satisfy the condition that the water outlet flow rates of the first water outlet end 12 and the second water outlet end 13 are substantially the same.

In this state, the flow control valve controls the water flow through the small area of the auxiliary water outlet 123 and the second water outlet 132, so that the total water inflow of the flow control valve is reduced, the heat release in the heating mechanism in the water heater is slower, the lowest point of the water temperature of the mixed water is larger, and the water temperature approaches to the target water outlet temperature, thereby improving the user experience.

In one embodiment, in order to stably and firmly mount the rotating and moving member 221 so as to ensure that the rotating and moving member 221 can smoothly move while rotating inside the valve housing 1, the second partition plate 131 is further provided with a supporting hole 133, and the other end portion of the rotating and moving member 221 is inserted into the supporting hole 133.

Specifically, during the assembly process, the rotational movement member 221 is inserted into the valve housing 1 such that one end portion of the rotational movement member 221 is inserted into the support hole 133, and then the other end portion is connected to the driving member 21 outside the valve housing 1. Thus, both end portions of the rotational movement member 221 can be supported well to ensure stable rotation and movement of the rotational movement member 221 within the valve housing 1.

In some embodiments, the second outlet end 13 is closed when the flow control valve is operated between the first position and the second position, and the second outlet end 13 is open when the flow control valve is operated between the second position and the third position. The mounting member 231 is also designed to be a sleeve structure, the mounting member 231 is sleeved on the rotating member 221, an elastic member 233 is further arranged between the mounting member 231 and the rotating member 221, and the elastic member 233 is used for applying an elastic force to the mounting member 231 towards the second partition 131; the other end portion of the rotational movement member 221 is provided with a stopper 223, and the stopper 223 is located between the second partition 131 and the mounting member 231.

Specifically, the mounting member 231 is fitted over the rotating member 221, and the mounting member 231 is slidable with respect to the rotating member 221, and the elastic member 233 functions to apply an elastic force to the mounting member 231.

When the flow rate control valve is operated between the first position and the second position, the blocking piece 223 and the mounting part 231 are spaced apart from each other, the elastic part 233 applies elastic force to the mounting part 231 so that the mounting part 231 does not move relative to the valve housing 1, and the second water outlet 132 of the second partition 131 is closed by the second blocking part 232, and at this time, the rotary moving part 221 can rotate and move relative to the mounting part 231.

When the flow control valve is operated between the second position and the third position, the blocking piece 223 abuts against the mounting part 231, so that the mounting part 231 moves along with the rotating moving part 221, and at this time, the second shutter part 232 opens the second water outlet 132.

Wherein, the elastic component 233 is a spring, and the rotating moving component 221 is provided with a step surface; a spring seat 234 is provided in the mounting member 231, a through hole (not shown) is provided in the spring seat 234, the rotational moving member 221 passes through the through hole, a spring is fitted over the rotational moving member 221, and the spring is located between the spring seat 234 and a step surface.

Specifically, the spring is also fitted outside the rotational movement member 221 between the step surface and the spring seat 234, and thus the spring force can be applied to the mounting member 231 by the spring.

In another embodiment, in order to better satisfy the requirement of adjusting the water flow rate, the water inflow of the water inlet end 11 can be adjusted as required, the first shielding member 222 is further provided with a shielding extension 2223, the shielding extension 2223 extends along the axial direction of the rotating member 221 away from the water through opening 2221, and the shielding extension 2223 is used for partially shielding the nozzle of the water inlet end 11.

Specifically, in the process that the flow control valve sequentially runs from the first position, the second position and the third position, the first shielding part 222 gradually approaches the pipe orifice of the water inlet end 11 along with the rotation of the rotating moving part 221, and then the shielding extension 2223 is used to partially shield the pipe orifice of the water inlet end 11, so as to reduce the water inflow rate of the water inlet end 11.

And the effect of reducing the water outlet flow of the first water outlet end 12 can be better satisfied by reducing the water inlet flow of the water inlet end 11. In addition, when the flow control valve is located at the third position, the first water outlet end 12 discharges water through the auxiliary water outlet 123 with a smaller area, and the second water outlet end 13 discharges water through the second water outlet with a smaller area, at this time, the shielding extension portion 2223 is used to shield the water inlet end 11 to the maximum extent, so as to reduce the water inflow more effectively, further reduce the total water inflow, adjust the cold and hot water more efficiently, and ensure that the discharged water temperature of the user side is constant.

In one embodiment, the water passage ports 2221 and the shielding extension portions 2223 are arranged to be offset in the axial direction of the rotating member 221.

In particular, the water inlet end 11 and the first water outlet end 12 are arranged at the side of the valve housing 1, the second water outlet end 13 is arranged at one end of the valve housing 1, and the drive member 21 is arranged at the other end of the valve housing 1.

The water inlet end 11 and the first water outlet end 12 are arranged substantially perpendicular to the axial direction of the rotating and moving member 221, and the second water outlet end 13 is arranged along the axial direction of the rotating and moving member 221. The water inlet end 11 and the first water outlet end 12 are distributed in a back-to-back arrangement manner, and therefore the water opening 2221 and the shielding extension portion 2223 are arranged in a staggered manner, so as to meet the requirements of the water inlet end 11 and the first water outlet end 12 at different positions on water flow regulation.

In some embodiments of the present application, in order to satisfy the installation requirement of the rotating and moving part 221, the driving part 21 also synchronously moves during the process of driving the rotating and moving part 221 to rotate. One end of the rotation moving member 221 is sequentially provided with a sliding guide portion 2211 and a screw portion 2212 from the outside to the inside; the slide guide 2211 is connected to the driving member 21, and the slide guide 2211 rotates following the driving member 21 and is slidable relative to the driving member 21; the valve core assembly 2 further includes a bushing 24, the bushing 24 is provided with a threaded hole (not labeled), the rotating moving member 221 passes through the bushing 24, the threaded portion 2212 is screwed in the threaded hole, and the bushing 24 is disposed on the valve housing 1.

Specifically, after the pivotal moving member 221 is inserted into the valve housing 1, the end portion located inside the valve housing 1 is supported and mounted by the second partition 131. The end portion located outside the valve housing 1 is attached to the valve housing 1 by the boss 24, and the slide guide portion 2211 is connected to the driving member 21. The sleeve 24 is coupled and engaged with the rotation moving member 221, so that the rotation moving member 221 performs a reciprocating motion by engaging the threaded portion 2212 with the threaded hole during the rotation.

The expression entity of the sliding guide portion 2211 may be a gear structure disposed on the rotating moving part 221, the guide ribs are distributed on the outer circumference of the rotating moving part 221, the driving part 21 may be a motor, and an inner gear ring structure is disposed on the rotating shaft of the motor, and the gear structure and the inner gear ring structure cooperate to meet the requirement of the rotating moving part 221 for rotation on one hand and meet the requirement of the sliding movement during the rotation of the rotating moving part 221 on the other hand.

In one embodiment of the present application, in order to satisfy the requirement of sealing installation between the valve housing 1 and the related assembly component, a first sealing ring 25 is further provided between the rotating moving member 221 and the inner wall of the sleeve 24.

Specifically, after the boss 24 is sealingly attached to one end portion of the valve housing 1, the pivotable member 221 is attached to the boss 24, and the boss 24 and the pivotable member 221 are sealingly installed by the first seal ring 25.

Similarly, a second seal ring 26 is provided between the turning member 221 and the inner wall of the mounting member 231.

Specifically, the mounting member 231 is fitted to the outside of the pivotal member 221, and the connection portion formed between the mounting member 231 and the pivotal member 221 is sealed by the second sealing ring 26, so that the water entering the valve housing 1 from the water inlet end 11 does not flow into the second water outlet end 13 from the gap formed between the mounting member 231 and the pivotal member 221 and is discharged, thereby ensuring sealability and improving the water flow rate control accuracy of the second water outlet end 13.

In one embodiment, the second partition 131 forms a groove structure 134, and a support hole 133 and a second water outlet 132 are formed at the bottom of the groove structure 134; the second shielding member 232 has a ring shape and is fitted over the rotating moving member 221, and the second shielding member 232 is used to seal the outer edge of the groove structure 134.

Specifically, in order to open and close the second water outlet 132 through the second shielding member 232, the second water outlet 132 is disposed in the groove structure 134 formed by the second partition 131, and when the second water outlet 132 is closed, only the edge of the groove structure 134 needs to be shielded and closed, so that the second water outlet 132 can be closed.

Wherein an end surface of the mounting member 231 opposite to the second barrier 131 is provided with an annular groove (not labeled) in which the second shielding member 232 is disposed. Specifically, the second shielding member 232 may be a sealing member such as a rubber ring or a silicone ring, the second shielding member 232 is disposed in the annular groove of the mounting member 231 to complete the mounting, and the second water outlet 132 is closed by the second shielding member 232 sealing the edge of the groove structure 134.

In addition, the second partition 131 is further provided with a first inclined surface extending outward around the groove structure 134, the first inclined surface forming a bell mouth structure, and an end portion of the mounting part 231 opposite to the second partition 131 is provided with a second inclined surface forming a cone head structure.

Specifically, the cone head structure formed by the mounting component 231 and the bell mouth structure formed on the second partition 131 are matched with each other, so that the flow regulation precision of the second water outlet 132 can be more finely regulated, and further, when the water temperature of the water heater is controlled, more refined bypass ratio control is obtained, and the water temperature can be kept constant more favorably.

In one embodiment, the side wall of the rotating and moving part 221 is provided with a connecting rod 27 extending outwards, the first shielding part 222 is provided with a connecting hole 2224, and the connecting rod 27 is inserted into the connecting hole 2224.

Specifically, the connecting rod 27 is matched with the connecting hole 2224, so that the first flow control part 22 is mounted on the rotating and moving part 221, on one hand, the mounting requirement of the first flow control part 22 is met, and on the other hand, the connecting rod 27 is arranged on the rotating and moving part 221, so that the flowing of water flow is not obstructed, and the requirement of smooth conveying of water flow is met.

Compared with the prior art, the invention has the advantages and positive effects that: through setting up the case subassembly in the valve casing, drive assembly among the case subassembly can drive first accuse flow part and second accuse flow part and move about in the valve casing is inside, first accuse flow part can be at the continuous flow of adjusting first outlet pipe of activity in-process, and then satisfy the change of water heater heating power and need carry out the purpose of adjusting to rivers, and second accuse flow part can be at the in-process of short time switch water, adjust the mixing amount of bypass flow with accurate control cold and hot water, and then reach the purpose that reduces water heater play water temperature fluctuation, through flow control valve with the accuracy regulation water flow in order to reduce the play water temperature fluctuation of water heater, and then improve user experience nature.

The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A control method of a gas water heater is characterized in that the gas water heater comprises a heating mechanism, a water inlet main pipe, a water outlet main pipe, a bypass pipe and a flow regulating valve, the heating mechanism is provided with a water inlet end and a water outlet end, the water inlet end of the flow regulating valve is connected with the water inlet main pipe, two water outlet ends of the flow regulating valve are correspondingly connected with the water inlet end of the heating mechanism and the bypass pipe respectively, one of the water outlet main pipes is connected with the water outlet end of the heating mechanism, and the other water outlet main pipe is connected with the bypass pipe, and the control method of the gas water heater comprises the following steps:

entering a bypass adjustment condition judgment step, and entering a bypass adjustment step when the bypass adjustment condition is met;

and a bypass adjusting step of obtaining a bypass ratio of the flow regulating valve and adjusting the flow of the flow regulating valve entering the water inlet end of the heating mechanism and the flow of the flow regulating valve entering the bypass pipe respectively according to the bypass ratio.

2. The gas water heater control method according to claim 1, wherein the bypass adjustment entering condition determining step comprises:

and judging whether water is shut down or zero cold water circulation heating is stopped, and entering a bypass adjusting step when any condition of water shut down or zero cold water circulation heating is met.

3. The gas water heater control method according to claim 2, before determining whether to stop water or stop zero cold water circulation heating, further comprising:

acquiring the water outlet temperature of the heating mechanism;

and judging whether the outlet water temperature of the heating mechanism exceeds a lower limit value of a preset temperature or not, and judging whether water is shut down or whether zero-cold-water circulation heating is stopped or not when the outlet water temperature of the heating mechanism exceeds a first lower limit value of the preset temperature.

4. The gas water heater control method of claim 2, further comprising, after the bypass adjusting step: and judging whether the water is opened again within the set time length, and determining the condition of exiting the bypass adjusting step according to the entering condition of the current bypass adjustment when the water is not opened again.

5. The gas water heater control method according to claim 4, wherein if the entry condition for entering the bypass adjustment is that entry of water is satisfied with shutdown, the condition for exiting the bypass adjustment step is:

and when the water outlet temperature of the heating mechanism is lower than a second lower limit value, the bypass adjusting step is quitted, and the second lower limit value is smaller than the first lower limit value.

6. The gas water heater control method according to claim 5, wherein if the entry condition for entering the bypass regulation is that zero cold water circulation heating is stopped, the condition for exiting the bypass regulation step is that:

and when the water outlet temperature of the heating mechanism is lower than a third lower limit value, the bypass adjusting step is quitted, and the third lower limit value is larger than the second lower limit value and smaller than the first lower limit value.

7. The gas water heater control method according to claim 4, further comprising judging whether to exit the bypass adjusting step according to the water flow entering the water inlet end of the heating mechanism corresponding to the current position of the flow adjusting valve, and judging to exit the bypass adjusting step when the water flow meets a set condition.

8. The gas water heater control method according to any one of claims 1 to 7, wherein the bypass ratio is determined by:

h= S* (T2-T0)/(T2-T1)；

wherein T2 is the outlet water temperature of the heating mechanism, T1 is the inlet water temperature of the inlet water main pipe, T0 is the set temperature, and S is the preset coefficient.

9. The gas water heater control method according to claim 4, wherein in the step of judging whether to start water again within a set time period, when the water is started again, the continuous water use time of the water to be started again is counted and judged, and when the continuous water use time does not exceed the first set time, the step of continuously keeping working in the bypass adjusting step is carried out;

when the water continuous using time exceeds the first set time, continuously judging whether the water continuous using time exceeds a second set time, and when the water continuous using time exceeds the second set time, exiting the bypass adjusting step;

and when the continuous water using time does not exceed a second set time, acquiring the current bypass ratio, and judging whether to exit the bypass adjusting step or not according to the current bypass ratio, wherein the first set time is less than the second set time.

10. The gas water heater control method of claim 9, wherein determining whether to exit the bypass adjustment step based on the current bypass ratio comprises:

when the bypass ratio is not greater than a first bypass ratio set value, directly exiting the bypass adjusting step;

and when the bypass ratio is not more than the second bypass ratio set value and the water outlet temperature of the heating mechanism is lower than a fourth lower limit value, the bypass adjusting step is quitted.

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