CN111649489A - Water mixing device of gas water heater and gas water heater - Google Patents

Abstract

The invention relates to the technical field of household appliances, in particular to a water mixing device of a gas water heater and the gas water heater. The water mixing device of the gas water heater comprises: a housing; the water inlet joint is arranged on the shell, and one end of the water inlet joint is suitable for being connected with a water outlet pipe of the body of the gas water heater; the first end of the water inlet pipeline is communicated with the other end of the water inlet connector, and the second end of the water inlet pipeline extends to a position close to the inner wall of the shell opposite to the first end from the first end; and one end of the water outlet structure is arranged in the shell, and the other end of the water outlet structure is suitable for enabling mixed water in the shell to flow out. Through setting up the inlet channel, the first end of inlet channel communicates with the water supply connector on the casing, and the second end extends to by first end and is close to casing and the relative inner wall department of first end for the water that flows out by the outlet pipe of gas heater's body can be in the inlet channel with in the water admixing device casing deposit water and flow into in the casing after abundant heat transfer, temperature in the casing is unlikely to too high or low excessively like this, when supplying with to the user again, can improve user experience.

Description

Water mixing device of gas water heater and gas water heater

Technical Field

The invention relates to the technical field of household appliances, in particular to a water mixing device of a gas water heater and the gas water heater.

Background

The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. The basic working principle of the gas water heater is that cold water enters the water heater, the cold water flows through the water-gas linkage valve body and pushes the water-gas linkage valve under the action of a certain pressure difference value of flowing water, and simultaneously pushes the direct-current power supply microswitch to switch on the power supply and start the pulse igniter, and simultaneously, the gas transmission electromagnetic valve is opened, the gas transmission electromagnetic valve is continuously and automatically re-ignited through the pulse igniter until the ignition is successfully carried out in a normal working state, the process is continuously maintained for 5-10 seconds, when the gas water heater has the fault phenomena of water shortage or insufficient water pressure, power shortage, gas shortage, overhigh hot water temperature, accidental blow-out and flameout and the like in the working process or the ignition process, the pulse igniter automatically cuts off the power supply by detecting a signal fed back by the induction needle, the gas transmission electromagnetic valve immediately returns to the original normally-closed valve state under the condition of power, the gas water heater is closed to play a safety protection role.

The gas water heater sold in the market at present can reach the previous bath temperature after a period of time after closing tax law and restarting in the using process, and the bath comfort of a user is seriously influenced. However, in the structure, only the water inlet joint is arranged at the water inlet part of the water energy mixing device, after the water inlet joint guides the outlet water of the gas water heater to the cavity of the water energy mixing device, the high-temperature or low-temperature water flowing out of the gas water heater is directly mixed with the stored water in the cavity of the water energy mixing device and then supplied to a user, the problem that the temperature of the water supplied to the user is too high or too low and the user experience is still poor still can be solved.

Disclosure of Invention

Therefore, the invention aims to overcome the defects of poor heat exchange effect and poor user experience of the water energy mixing device of the gas water heater in the prior art, and provides the water mixing device of the gas water heater and the gas water heater, which can improve the heat exchange effect and enhance the user experience.

In order to solve the above problems, a first aspect of the present invention provides a water mixing device for a gas water heater, including:

a housing adapted to store water therein;

the water inlet joint is arranged on the shell, and one end of the water inlet joint is suitable for being connected with a water outlet pipe of the body of the gas water heater;

the first end of the water inlet pipeline is communicated with the other end of the water inlet connector, and the second end of the water inlet pipeline extends to a position close to the inner wall of the shell opposite to the first end from the first end;

and one end of the water outlet structure is arranged in the shell, and the other end of the water outlet structure is suitable for enabling mixed water in the shell to flow out.

Furthermore, a plurality of water outlet holes are formed in the water inlet pipeline.

Furthermore, a plurality of first water outlet holes are formed in the position, close to the first end, of the water inlet pipeline;

and/or a plurality of second water outlet holes are formed in the position, close to the second end, of the water inlet pipeline.

Furthermore, the first water outlet hole and/or the second water outlet hole are multiple and are uniformly arranged along the circumference of the water inlet pipeline.

Further, the second water outlet hole has the same aperture as the first water outlet hole.

Further, the second end of the water inlet pipe is arranged in contact with the inner wall of the shell.

Further, the water outlet structure comprises:

the first end of the water outlet pipeline is arranged in the shell;

and the water outlet joint is arranged on the shell and is communicated with the second end of the water outlet pipeline.

Furthermore, the water outlet pipeline is arranged along the vertical direction, and the water inlet pipeline is arranged in the middle of the side wall of the shell and is arranged in a cross structure with the water outlet pipeline.

Further, the first ends of the outlet pipes are arranged close to the top wall of the shell at intervals.

Furthermore, a plurality of water inlet holes are formed in the position, close to the second end, of the water outlet pipeline, and the aperture of each water inlet hole is smaller than that of the first water outlet hole in the water inlet pipeline.

The invention provides a gas water heater in a second aspect, which comprises the water mixing device.

The technical scheme of the invention has the following advantages:

1. the invention provides a water mixing device of a gas water heater, which comprises: a housing adapted to store water therein; the water inlet joint is arranged on the shell, and one end of the water inlet joint is suitable for being connected with a water outlet pipe of the body of the gas water heater; the first end of the water inlet pipeline is communicated with the other end of the water inlet connector, and the second end of the water inlet pipeline extends to a position close to the inner wall of the shell opposite to the first end from the first end; and one end of the water outlet structure is arranged in the shell, and the other end of the water outlet structure is suitable for enabling mixed water in the shell to flow out.

Through setting up the inlet channel, the first end of inlet channel communicates with the water supply connector on the casing, the second end extends to by first end and is close to casing and the relative inner wall department of first end, make the water that flows out by the outlet pipe of gas heater's body can flow into in the casing with depositing water in the water inlet channel in the abundant heat transfer of water mixing device casing, rather than direct with depositing water in the casing of the water of the outlet pipe of gas heater's body and mix, the temperature in the casing is unlikely to too high or low excessively like this, when supplying with the user again, can improve user experience.

2. According to the water mixing device of the gas water heater, the first water outlet hole is formed in the position, close to the first end, of the water inlet pipeline, so that water flowing into the shell from the water inlet pipeline can be sprayed to the periphery from the first water outlet hole in a radial mode and then is discharged, the second water outlet hole is formed in the position, close to the second end, of the water inlet pipeline, water which does not flow out from the first water outlet hole can fully exchange heat with stored water in the shell and then flows out, and the heat exchange effect is further improved. Simultaneously, owing to set up the hole on the inlet channel, even also make from the water that gas heater flows even dissolve the air, the apopore also can have exhaust function concurrently, makes the noise of rivers littleer, improves user experience.

3. According to the water mixing device of the gas water heater, the first water outlet hole and the second water outlet holes are formed in a plurality of the water outlet holes and are uniformly formed along the circumference of the water inlet pipeline, so that water is more uniformly discharged from the water inlet pipeline into the shell, the water discharged from the gas water heater body is more uniformly mixed with water stored in the shell, and the partial water temperature is prevented from being too high or too low.

4. According to the water mixing device of the gas water heater, provided by the invention, the apertures of the first water outlet and the second water outlet are set to be the same, so that inlet water can uniformly flow out of the first water outlet and the second water outlet, and the change of water flow caused by the size mutation of the apertures relative to the pipe diameter is prevented.

5. According to the water mixing device of the gas water heater, the second end of the water inlet pipeline is arranged in contact with the inner wall of the shell, so that no gap exists between the second end of the water inlet pipeline and the inner wall of the shell, water in the water inlet pipeline flows into the shell from the second end of the water inlet pipeline without heat exchange, the water in the water inlet pipeline can be emitted from the first water outlet and the second water outlet after sufficient heat exchange, and the heat exchange effect is ensured.

6. According to the water mixing device of the gas water heater, the water outlet pipeline is arranged in the vertical direction, the water inlet pipeline is arranged in the middle of the side wall of the shell and is arranged in a cross structure with the water outlet pipeline, so that water can transversely enter and vertically exit, water flows can be mixed to the greatest extent, and better reverse heat exchange is realized.

7. According to the water mixing device of the gas water heater, the first end of the water outlet pipeline is arranged close to the top wall of the shell at intervals, so that the first end of the water outlet pipeline forms a liquid seal, water can flow out of the water outlet pipeline only when the liquid level in the shell is higher than that of the first end, and the water mixing effect is further guaranteed.

8. According to the water mixing device of the gas water heater, the water outlet pipeline is provided with the plurality of water inlet holes close to the second end of the water outlet pipeline, and the aperture of each water inlet hole is smaller than that of the first water outlet hole in the water inlet pipeline, so that the water outlet pipeline is provided with the water inlet holes, the water flow in the shell cannot be influenced to rise until the whole shell is filled and flows out from the first end of the water outlet pipeline, reverse heat exchange of downward heat flow and upward cold flow or upward heat flow and downward cold flow is realized in the whole shell, the heat exchange effect is greatly improved, meanwhile, the resistance of the pipeline can be effectively reduced by arranging the water inlet holes, and the pressure balance is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a gas water heater of the present invention;

FIG. 2 is a cross-sectional view of the gas water heater of the present invention;

FIG. 3 is a schematic structural diagram of a water mixing device of a gas water heater according to the present invention;

FIG. 4 is a partial schematic structural view of a water mixing device of a gas water heater according to the present invention;

FIG. 5 is a schematic view of the intersection of the inlet and outlet conduits of the present invention.

Description of reference numerals:

1-a shell; 2-water inlet joint; 3-a water inlet pipeline; 4-a first water outlet; 5-a second water outlet; 6-water outlet pipeline; 7-water outlet joint; 8-water inlet holes; 9-body; 10-a heat exchanger; 11-a water outlet pipe; 12-water mixing device.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 5, the present embodiment provides a water mixing device for a gas water heater, including: a housing 1, the housing 1 being adapted to store water therein; the water inlet joint 2 is arranged on the shell 1, and one end of the water inlet joint is suitable for being connected with a water outlet pipe 11 of a body 9 of the gas water heater; a water inlet pipeline 3, the first end of which is communicated with the other end of the water inlet connector 2, and the second end of which extends to a position close to the inner wall of the shell 1 opposite to the first end; and one end of the water outlet structure is arranged in the shell 1, and the other end of the water outlet structure is suitable for enabling mixed water in the shell 1 to flow out.

Through set up inlet channel 3 in water admixing device, inlet channel 3's first end and 2 intercommunications of water supply connector on the casing 1, the second end is extended to being close to casing 1 and the relative inner wall department of first end by first end, make by 11 water that the outlet pipe of gas heater's body 9 flows out can flow into in casing 1 with depositing water after abundant heat transfer in water admixing device 12 casing 1 in inlet channel 3, and not with the direct and 1 interior deposit water mixing of casing of 11 water of outlet pipe of gas heater's body 9, the temperature in the casing 1 is unlikely to too high or low excessively like this, when supplying with to the user again, can improve user experience.

As shown in fig. 3, the housing 1 of the water mixing device includes an upper housing and a lower housing, which are convenient for assembly and installation, the water inlet pipe 3 is disposed in the middle of the sidewall of the housing 1, and the water outlet structure is disposed along the vertical direction.

As shown in fig. 4, a plurality of water outlets are provided on the water inlet pipe 3, specifically, a plurality of first water outlets 4 are provided at a position of the water inlet pipe 3 close to the first end thereof, and a plurality of second water outlets 5 are provided at a position of the water inlet pipe 3 close to the second end. Through being close to its first end department at inlet channel 3 and being equipped with first apopore 4 for the water that flows into in the casing 1 by inlet channel 3 can be the emission by first apopore 4 and spray all around and go out, sets up second apopore 5 being close to second end department, makes the intaking that does not flow out from first apopore 4 can flow out again after abundant heat transfer with the deposit water in the casing 1, has further improved the heat transfer effect. Simultaneously, owing to set up the hole on inlet channel 3, even also make from the water that gas heater flows dissolve the air, the apopore also can have exhaust function concurrently, makes the noise of rivers littleer, improves user experience. As an alternative embodiment, it is also possible to provide the inlet conduit 3 with a number of first outlet openings 4 only near its first end, or to provide the inlet conduit 3 with a number of second outlet openings 5 only near its second end. As an alternative embodiment, a water outlet may be provided in the middle or at another location of the water inlet pipe 3. As an alternative embodiment, the water inlet pipe 3 may not be provided with water outlet holes.

Wherein, first apopore 4 and/or second apopore 5 are a plurality ofly to evenly set up along a week of inlet channel 3. Set up to a plurality ofly through with first apopore 4 and second apopore 5, and evenly set up along a week of inlet channel 3 for it is more even to go out water in the casing 1 from inlet channel 3, and then makes the play of gas heater body 9 and the mixing of depositing water in the casing 1 more even, prevents that partial temperature of water is too high or low excessively. As an alternative embodiment, the outlet openings may also be arranged non-uniformly along a circumference of the inlet conduit 3.

In order to make the water inflow can be even flow out from first apopore 4 and second apopore 5, second apopore 5 is the same with the number of first apopore 4, and the aperture is the same, can also prevent like this that the aperture is different, and the size sudden change of 3 pipe diameters of relative inlet channel causes the change of discharge, is convenient for control the inflow. As an alternative embodiment, the first outlet holes 4 and the second outlet holes 5 may have different diameters and different numbers.

In actual design, the number of the first water outlet holes 4 may be set to 6. As an alternative embodiment, 8, or 9, or another suitable number is possible.

As shown in fig. 4, the second end of the inlet pipe 3 is disposed in contact with the inner wall of the housing 1. Through the second end with inlet channel 3 and the inner wall contact setting of casing 1 for there is not the clearance between the second end of inlet channel 3 and the inner wall of casing 1, water in the inlet channel 3 can not have the heat transfer still just in flowing into casing 1 from the second end of inlet channel 3, make the water homoenergetic in the inlet channel 3 through launch and play in abundant heat transfer back follow first apopore 4 and second apopore 5, guarantee the heat transfer effect. In order to prevent a gap from being formed between the second end of the water inlet pipe 3 and the inner wall of the housing 1, and water flows out from the gap, a sealing structure may be further provided between the second end of the water inlet pipe 3 and the inner wall of the housing 1, and certainly, if the second end of the water inlet pipe 3 and the inner wall of the housing 1 can be arranged in close contact, the sealing structure may not be provided, which may be specifically adjusted according to actual needs, and thus, no limitation is imposed. As an alternative embodiment, the second end of the inlet conduit 3 may be spaced from the inner wall of the housing 1.

Go out water structure includes: a water outlet pipeline 6, the first end of which is arranged in the shell 1; and the water outlet joint 7 is arranged on the shell 1, and the water outlet joint 7 is communicated with the second end of the water outlet pipeline 6. Specifically, the water outlet pipe 6 is arranged along the vertical direction, and the water inlet pipe 3 is arranged in the middle of the side wall of the shell 1 and is arranged in a cross structure with the water outlet pipe 6. Through setting up outlet conduit 6 along vertical direction, inlet channel 3 locates the lateral wall middle part of casing 1, is the cross structure setting with outlet conduit 6 for water transversely advances, vertical play, and the at utmost makes rivers flow and mixes, realizes better reverse heat transfer.

Wherein, the first end of the water outlet pipe 6 is arranged close to the top wall of the shell 1 at intervals. Through the roof interval setting that is close to casing 1 with outlet conduit 6's first end for outlet conduit 6's first end forms liquid and seals, and water can only flow from outlet conduit 6 when the liquid level in casing 1 is higher than first end, has further guaranteed the mixed effect of water. As an alternative embodiment, the first end of the outlet pipe 6 may be disposed in contact with the top wall of the housing 1, and a hole may be formed at a position near the first end of the outlet pipe 6 for feeding water into the outlet pipe 6, or, as shown in fig. 5, the first end of the outlet pipe 6 may be disposed at a distance from the top wall of the housing 1, and a plurality of water inlets 8 may be formed at a position near the first end of the outlet pipe 6, and the diameter of each water inlet 8 is the same as the diameter of each of the first outlet 4 and the second outlet 5.

As shown in fig. 3, the outlet pipe 6 is provided with a plurality of inlet holes 8 near the second end thereof, the aperture of each inlet hole 8 is smaller than that of the first outlet hole 4 on the inlet pipe 3, and the number of the inlet holes 8 is also smaller than that of the first outlet holes 4. Through being close to its second end department at outlet conduit 6 and setting up a plurality of inlet openings 8, and the aperture of inlet opening 8 is less than the aperture of first apopore 4 on the inlet conduit 3, make outlet conduit 6 set up the rivers that inlet opening 8 can not influence in the casing 1 yet and rise, flow until filling full whole casing 1 and by outlet conduit 6's first end, make to present a thermal current downwards in whole casing 1, the cold flow upwards or the thermal current upwards, the decurrent reverse heat transfer of cold flow, the heat transfer effect has been improved greatly, and simultaneously, set up the resistance that inlet opening 8 can effectively reduce the pipeline, guarantee pressure balance. As an alternative embodiment, it is also possible to provide the outlet conduit 6 with one inlet opening 8, or more inlet openings 8, near its second end. As an alternative embodiment, the number of inlet openings 8 may be equal to or greater than the number of first outlet openings 4.

As shown in fig. 1-2, the embodiment further provides a gas water heater, which includes the water mixing device 12 and the body 9 of the gas water heater, a heat exchanger 10 is disposed in the body 9, and the water mixing device 12 is connected to the water outlet end of the body 9 of the gas water heater through a water outlet pipe 11.

The water outlet end of the body 9 of the gas water heater is connected with the water mixing device 12, so that the problem of cold and hot outlet water temperature can be effectively solved, if the water heater is stopped for a short time and then started, tap water enters the water heater, high-temperature internal water in a heat exchange system is firstly pressed out, the high-temperature internal water enters the shell 1 of the water mixing device 12 through the water outlet pipe 11 of the heat exchanger, and flows out of the whole machine through the upper end opening of the water outlet pipeline 6 after being mixed with the internal water in the shell 1 for heat exchange; meanwhile, after a part of cold water enters the heat exchange system, the cold water which is not heated and flows out due to delayed ignition enters the shell 1 of the water mixing device 12 again, and the cold water which are relatively high in temperature are mixed and exchanged heat in the shell 1 and then flow out of the whole machine through the upper port of the water outlet pipeline 6 after the temperature is increased, so that the sudden cold and sudden heat condition of the water heater caused by the temporary halt of the water heater after the water heater is started is eliminated, the constant temperature performance of the gas water heater is improved, and the aim of saving water resources is fulfilled.

Simultaneously, owing to set up inlet channel 3 to and set up the apopore on inlet channel 3, make rivers in the inlet channel and the abundant heat transfer back of depositing water in the casing 1, follow inlet channel 3's outlet opening again to around in the transmission form flows into casing 1, heat transfer is more even, prevent from still too high or low crossing of the temperature that flows from mixing water installation 12, also can reduce rivers noise, further improved user experience.

In the design, taking a 13L gas water heater as an example, the hot water accumulated in the burner after water cut is about 100ml, if the temperature is 90 ℃, the hot water can be changed into 50 ℃ by neutralization by the water mixing device 12, and if the cold water of the water mixing device 12 is 25 ℃, the cold water can also be changed into 50 ℃ by neutralization by the hot water, and according to Q ═ cm Δ t, the following quantitative relation exists: 100 (90-50) V (50-25), and the estimated V is 160ml, in which case the water mixing device 12 can theoretically meet the requirement of selecting 160 ml. If the cold water with the outlet water temperature of 25 ℃ of the water heater needs to be neutralized by the water mixing device 12 to become hot water with the outlet water temperature of 47 ℃, and the hot water temperature of the water mixing device 12 is 50 ℃, the following quantitative relations are provided: 100 (47-25) V (50-47), and estimated to be 800ml, then in this case 800ml would theoretically be acceptable for the mixing device 12. Namely, the volume of the water mixing device 12 can be selected to be more than or equal to 160ml and less than or equal to 800 ml.

Through the required water quantity, can obtain the discharge in the unit interval, then through trompil on inlet channel 3, can make discharge reach the demand can, can be according to the different hot and cold water mixing demand of unit of difference like this, can control the effect that hot and cold water mixes through changing trompil size, quantity isoparametric.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (11)

1. The utility model provides a water mixing device of gas heater which characterized in that includes:

a housing (1), said housing (1) being adapted to store water therein;

the water inlet joint (2) is arranged on the shell (1), and one end of the water inlet joint is suitable for being connected with a water outlet pipe (11) of the body (9) of the gas water heater;

the first end of the water inlet pipeline (3) is communicated with the other end of the water inlet connector (2), and the second end of the water inlet pipeline extends to a position close to the inner wall of the shell (1) opposite to the first end;

and one end of the water outlet structure is arranged in the shell (1), and the other end of the water outlet structure is suitable for enabling mixed water in the shell (1) to flow out.

2. The mixing device of a gas water heater according to claim 1, characterized in that the inlet pipe (3) is provided with a plurality of outlet holes.

3. The mixing device of a gas water heater according to claim 2, characterized in that the inlet pipe (3) is provided with a plurality of first outlet holes (4) near the first end thereof; and/or a plurality of second water outlet holes (5) are formed in the position, close to the second end, of the water inlet pipeline (3).

4. The mixing device of a gas water heater according to claim 3, characterized in that the first outlet (4) and/or the second outlet (5) are provided in plurality and are uniformly arranged along a circumference of the inlet pipe (3).

5. The mixing device of a gas water heater according to claim 3, characterized in that the diameter of the second outlet hole (5) is the same as the diameter of the first outlet hole (4).

6. The mixing device of a gas water heater according to any of the claims 1-5, characterized in that the second end of the inlet pipe (3) is arranged in contact with the inner wall of the housing (1).

7. The mixing device of a gas water heater according to any one of claims 1 to 5, characterized in that the water outlet structure comprises:

a water outlet pipeline (6), wherein the first end of the water outlet pipeline is arranged in the shell (1);

and the water outlet joint (7) is arranged on the shell (1), and the water outlet joint (7) is communicated with the second end of the water outlet pipeline (6).

8. The water mixing device of a gas water heater according to claim 7, wherein the water outlet pipe (6) is arranged in a vertical direction, and the water inlet pipe (3) is arranged in the middle of the side wall of the housing (1) and arranged in a cross structure with the water outlet pipe (6).

9. The mixing device of a gas water heater according to claim 8, characterized in that the first end of the outlet pipe (6) is spaced close to the top wall of the housing (1).

10. The mixing device of a gas water heater according to claim 7, characterized in that the outlet pipe (6) is provided with a plurality of inlet openings (8) near the second end thereof, and the diameter of the inlet openings (8) is smaller than the diameter of the first outlet opening (4) of the inlet pipe (3).

11. A gas water heater, characterized by comprising a water mixing device (12) according to any one of claims 1-10.

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