CN215337038U - Gas water heating equipment - Google Patents

Abstract

The utility model relates to the technical field of household appliances, and particularly discloses a gas water heating device. The gas water heating equipment comprises a water path system, a mixing device, a gas path system, a heating system and a sterilizing device; the waterway system comprises a water inlet pipeline, a first water outlet pipeline, a second water outlet pipeline, a third water outlet pipeline, a first control valve arranged on the water inlet pipeline, a second control valve arranged on the second water outlet pipeline and a pressurizing device arranged on the first water outlet pipeline; the water outlet end of the water inlet pipeline, the water inlet end of the first water outlet pipeline and the water inlet end of the second water outlet pipeline are all connected with the mixing device, and the water inlet end of the third water outlet pipeline is connected with the water outlet end of the water inlet pipeline; the gas circuit system comprises a gas inlet pipeline and a third control valve arranged on the gas inlet pipeline, and the gas inlet pipeline is used for conveying gas to the mixing device; the heating system is used for heating the inlet water; the sterilizing device is arranged in the waterway system. The gas water heating equipment provided by the utility model has diversified functions and higher content of produced water gas.

Description

Gas water heating equipment

Technical Field

The utility model relates to the technical field of household appliances, in particular to a gas water heating device.

Background

The gas water heater can enable the temperature of cold water to rise to be changed into hot water within a certain time so as to be used by users, therefore, the appearance of the gas water heater greatly meets the requirements of people on hot water in daily life, but the existing gas water heater only has a single heating function, namely only can produce single common hot water. In order to satisfy people's life needs that are abundant day by day, prior art adds the microbubble generator in gas heater's pipe-line system, thereby can make gas heater go out water and have the function of receiving bubble a little, but, in order to produce and receive bubble water a little, rivers among the water route system need the interval to open and stop, and because gas mixture effect such as hot water and air is not good, gas content such as the aquatic air of output is not high, lead to receiving bubble generation effect a little poor, finally be unfavorable for user experience's promotion. Therefore, there is a need for a gas-fired water heating apparatus having multiple functions.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide gas water heating equipment, and aims to at least solve the problems of low gas content and single function in water of the existing gas water heater.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

gas water heating apparatus comprising:

a mixing device;

the water path system comprises a water inlet pipeline, a first water outlet pipeline, a second water outlet pipeline, a third water outlet pipeline, a first control valve, a second control valve and a supercharging device; the water outlet end of the water inlet pipeline is connected with the mixing device, the water inlet end of the first water outlet pipeline and the water inlet end of the second water outlet pipeline are respectively connected with the mixing device, the supercharging device is arranged on the first water outlet pipeline, the first control valve is arranged on the water inlet pipeline, the second control valve is arranged on the second water outlet pipeline, and the water inlet end of the third water outlet pipeline is communicated with the water outlet end of the water inlet pipeline;

the gas path system comprises a gas inlet pipeline and a third control valve, the gas inlet pipeline is used for conveying gas to the mixing device, and the third control valve is arranged on the gas inlet pipeline;

the heating system is used for heating the water flowing through the water inlet pipeline;

the sterilizing device is arranged in the waterway system.

In a possible embodiment, the water outlet end of the first water outlet pipeline, the water outlet end of the second water outlet pipeline and the water outlet end of the third water outlet pipeline are communicated in a crossed manner, the number of the sterilization devices is multiple, one sterilization device is arranged in the water inlet pipeline, and one sterilization device is arranged at the position where the sterilization devices are communicated in the crossed manner.

In one possible embodiment, the heating system comprises a heating device; the water inlet pipeline comprises a water inlet branch and a water outlet branch; the water outlet end of the water inlet branch is communicated with the heating device, the water inlet end of the water outlet branch is communicated with the heating device, and the mixing device is arranged between the first water outlet pipeline and the water outlet branch; the first control valve is arranged on the water inlet branch or the water outlet branch.

In a possible embodiment, the intake line is connected to the intake line in a region between the first control valve and the mixing device;

alternatively, the inlet line is connected to the mixing device.

In a possible embodiment, the waterway system further includes a plurality of water flow detection devices, one of the water flow detection devices is disposed at the intersection and communication portion, and the other water flow detection device is disposed on the water inlet pipeline.

In a possible implementation manner, the waterway system further includes a plurality of temperature detection devices, one of the temperature detection devices is disposed at the intersection and communication portion, and the other temperature detection device is disposed on the water inlet branch.

In a possible embodiment, the waterway system further includes a fourth control valve, and the fourth control valve is disposed on the third water outlet pipeline.

In one possible embodiment, the mixing device comprises a mixing tank having a mixing chamber and an inlet communicating with the mixing chamber, and a partition provided in the mixing chamber and dividing the mixing chamber into a first chamber and a second chamber; the separator includes intercommunication board and closing plate, and the through-hole of first cavity of intercommunication and second cavity is seted up to the intercommunication board, and the intercommunication board is connected between the inside wall and the closing plate of blending tank, and the closing plate is just relative with the import interval.

In a possible embodiment, the mixing tank has an inner bottom wall spaced opposite to the inlet, the number of the through holes is multiple, and the orthographic area of all the through holes on the inner bottom wall is not smaller than that of the inlet.

In one possible embodiment, the third control valve is a non-return valve or a shut-off valve.

The utility model has the beneficial effects that:

in the gas water heating equipment provided by the embodiment of the utility model, the water outlet end of the water inlet pipeline is connected with the mixing device, the water inlet end of the first water outlet pipeline and the water inlet end of the second water outlet pipeline are both connected with the mixing device, the first water outlet pipeline is provided with the supercharging device, the water inlet pipeline is provided with the first control valve, the second pipeline is provided with the second control valve, gas is conveyed into the mixing device by the air inlet pipeline of the air circuit system, and the water circuit system is provided with the sterilizing device, so that the pipeline structure not only can generate common hot water, but also can generate mixed hot water with higher gas content and mixed hot water with gas content between the higher gas content and the common hot water, simultaneously can realize a zero cold water function, can also improve the water pressure of the outlet water, can solve the neglected cold and hot problems existing in water short pause and break and can make the outlet water more sanitary, the multifunctional water outlet is realized, and simultaneously, the water using experience of a user is effectively enriched.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced 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 these drawings without creative efforts.

Fig. 1 is a simplified structural schematic diagram of a gas-fired water heating apparatus according to a first embodiment of the present invention;

fig. 2 is a schematic perspective view of a mixing tank according to a first embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic perspective view of a partition according to a first embodiment of the present invention;

FIG. 5 is a simplified schematic diagram of a control system coupled to various components in accordance with an embodiment of the present invention;

fig. 6 is a simplified structural schematic diagram of a gas-fired water heating apparatus according to a second embodiment of the present invention;

fig. 7 is a simplified structural schematic diagram of a gas-fired water heating apparatus according to a third embodiment of the present invention.

Reference numerals:

100. a gas fired water heating apparatus;

1. a waterway system;

11. a water inlet pipeline; 111. a water inlet branch; 112. a water outlet branch; 12. a first water outlet pipeline; 13. a second water outlet pipeline; 14. a third water outlet pipeline; 15. a first control valve; 16. a second control valve; 17. a pressure boosting device; 18. a water flow detection device; 19. a temperature detection device; 110. a fourth control valve;

2. a gas path system;

21. an air intake line; 22. a third control valve;

3. a heating system;

31. a heating device;

4. a mixing device;

41. a mixing tank; 40. a mixing chamber; 401. a first chamber; 402. a second chamber; 410. an inlet; 411. an inner bottom wall; 4110. an outlet; 42. a separator; 421. a communication plate; 4211. a connecting portion; 4212. a communicating portion; 4210. a through hole; 422. a closing plate; 4220. a groove; 4220a, groove sidewalls; 4220b, bottom wall of the groove; OO', groove central shaft;

5. a sterilizing device;

6. and (5) controlling the system.

Detailed Description

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, 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

Fig. 1 to 5 show a schematic structural view of a gas water heater 100 and its components according to this embodiment.

Referring to fig. 1, the gas water heater 100 includes a water channel system 1, a gas channel system 2, a heating system 3, a mixing device 4 and a sterilization device 5. The waterway system 1 comprises a water inlet pipeline 11, a first water outlet pipeline 12, a second water outlet pipeline 13, a third water outlet pipeline 14, a first control valve 15, a second control valve 16 and a pressurizing device 17; the water outlet end of the water inlet pipeline 11 is connected with the mixing device 4, the water inlet end of the first water outlet pipeline 12 is connected with the mixing device 4, the water inlet end of the second water outlet pipeline 13 is connected with the mixing device 4, the first control valve 15 is arranged on the water inlet pipeline 11, the supercharging device 17 is arranged on the first water outlet pipeline 12, the second control valve 16 is arranged on the second water outlet pipeline 13, and the water inlet end of the third water outlet pipeline 14 is communicated with the water outlet end of the water inlet pipeline 11; the gas path system 2 comprises a gas inlet pipeline 21 and a third control valve 22, the gas inlet pipeline 21 is used for conveying gas such as air to the mixing device 4, and the third control valve 22 is arranged on the gas inlet pipeline 21; the heating system 3 is used for heating the water inlet pipeline 11, so that the water flowing through the water inlet pipeline 11 is heated; the sterilizing device 5 is arranged in the water path system 1 and is used for killing water flow in the water path system 1 and bacteria carried in the gas water heating equipment 100 and improving the quality and sanitation of outlet water.

In a possible embodiment, the pressure increasing device 17 is a water pump, and the water flow, the water pressure and the air flow speed are adjusted by the water pump, i.e. the water pump can pump the water in the mixing device 4, so that the water flow or the water pressure of the first water outlet pipeline 12 is increased, and the air flow speed entering the mixing device 4 in the air path system 2 can be accelerated or slowed. In one possible embodiment, the first control valve 15 can be a solenoid valve or a directional valve, preferably a solenoid directional valve; the second control valve 16 may be a solenoid valve and the third control valve 22 may be a solenoid valve. When the first control valve 15 is a directional valve, the directional valve is disposed at a location where the third outlet conduit 14 meets the inlet conduit 11, such that the directional valve can control the flow of water into the mixing device 4 or the third outlet conduit 14.

In one possible embodiment, the third control valve 22 is a check valve or a stop valve. By means of a non-return valve or a shut-off valve, it is ensured that the air flow from the inlet line 21 flows into the mixing device 4, while it is avoided that the water flow enters the inlet line 21 and flows back.

Referring to fig. 1, in some embodiments, the waterway system 1 further includes a fourth control valve 110, the fourth control valve 110 is disposed on the third water outlet pipe 14, and the start and stop of the third water outlet pipe 14 are controlled by the fourth control valve 110. In some embodiments, the fourth control valve 110 may be a solenoid valve.

Referring to fig. 1, in some possible embodiments, the water outlet end of the first water outlet pipeline 12, the water outlet end of the second water outlet pipeline 13, and the water outlet end of the third water outlet pipeline 14 are connected, and the number of the sterilization devices 5 is plural, wherein one sterilization device 5 is disposed in the water inlet pipeline 11, and one sterilization device 5 is disposed at a position where the first water outlet pipeline 12, the second water outlet pipeline 13, and the third water outlet pipeline 14 are connected. The sterilizing device 5 arranged on the water inlet pipeline 11 can kill bacteria entering the gas water heating equipment 100, and the sterilizing device 5 arranged at the 4212 position of the intersection communication part of the first water outlet pipeline 12, the second water outlet pipeline 13 and the third water outlet pipeline 14 can kill bacteria generated inside the gas water heating equipment 100, thereby achieving double sterilizing effects, improving the water quality of outlet water as much as possible, reducing the influence on users due to residual bacteria at the water using end, and improving the water sanitation.

Referring to fig. 2, 3 and 4, the mixing device 4 includes a mixing tank 41 and a partition 42; wherein the mixing tank 41 has a mixing chamber 40 and an inlet 410 communicating with the mixing chamber 40, and a partition 42 is provided in the mixing chamber 40 and divides the mixing chamber 40 into a first chamber 401 and a second chamber 402, wherein the first chamber 401 communicates with the inlet 410; the partition 42 includes a communicating plate 421 and a closing plate 422, the communicating plate 421 is opened with a through hole 4210 for communicating the first chamber 401 with the second chamber 402, so that water flowing into the first chamber 401 from the inlet 410 or air introduced into the first chamber 401 from the inlet 410 can enter the second chamber 402, the communicating plate 421 is connected between the inner side wall of the mixing tank 41 and the closing plate 422, and the closing plate 422 is opposite to the inlet 410 at intervals. In some embodiments, the communication plate 421 and the closing plate 422 are separately provided structures, while in other embodiments, the communication plate 421 and the closing plate 422 are integrally integrated structures.

In some embodiments, the communication plate 421 includes a connection portion 4211 and a communication portion 4212, wherein the connection portion 4211 is connected between an inner sidewall of the mixing tank 41 and the communication portion 4212, the communication plate 421 is connected between the connection portion 4211 and the closing plate 422, and the through hole 4210 is provided on the communication plate 421. In some embodiments, the connection portion 4211 and the communication portion 4212 are separately provided structures, and in some embodiments, the connection portion 4211 and the communication portion 4212 are integrally integrated structures.

In some embodiments, the mixing tank 41 has an inner bottom wall 411 spaced opposite to the inlet 410, the connecting portion 4211 is smoothly transited from the connecting portion 4212 to the connecting portion 4212, and the connecting portion 4211 extends from the connecting portion 4212 to the inlet 410 with a larger distance from the centerline of the inlet 410 toward the surface of the first chamber 401, and the through hole 4210 formed in the connecting portion 4212 is located at the connecting portion 4211, which is advantageous for preventing water from remaining at the connecting portion 4211 and the inner side wall of the mixing tank 41 to prevent bacteria from breeding. In some embodiments, the number of the through holes 4210 is multiple, and the orthographic projection area of all the through holes 4210 on the inner bottom wall 411 is not smaller than that of the inlet 410 on the inner bottom wall 411, so that the water flowing into the first chamber 401 from the inlet 410 can be ensured to flow into the second chamber 402 in time, and the water flow jam in the first chamber 401 can be prevented. In some embodiments, the inner bottom wall 411 has two outlets 4110, and the number of the outlets 4110 is two, wherein one outlet 4110 is connected to the water inlet end of the first water outlet pipeline 12, and the other outlet 4110 is connected to the water inlet end of the second water outlet pipeline 13.

Referring to fig. 3 and 4, in some embodiments, the closing plate 422 has a groove 4220, the groove 4220 has a groove sidewall 4220a, a groove bottom wall 4220b and a notch disposed toward the inlet 410, wherein the groove sidewall 4220a extends from the notch toward the groove bottom wall 4220b with a gradually increasing distance from a groove central axis OO' and is connected to the groove bottom wall 4220b, and the shape of the groove 4220 formed thereby is: when the groove 4220 is intersected along the groove center axis OO', several cross-sectional areas from the notch side to the groove bottom wall 4220b side become gradually smaller.

Referring to fig. 5, as an embodiment of the present embodiment, the gas-fired water heating apparatus 100 further includes a control system 6, and the control system 6 controls the operating state of the gas-fired water heating apparatus 100. Specifically, the control system 6 is connected to the first control valve 15, the second control valve 16, the third control valve 22, the fourth control valve 110, the sterilization device 5, the pressure boosting device 17, the heating system 3, and the like, respectively, to control the operating states of the first control valve 15, the second control valve 16, the third control valve 22, the fourth control valve 110, the sterilization device 5, the pressure boosting device 17, the heating system 3, and the like, and finally to control the operating state of the gas-fired water heating apparatus 100.

The basic operation of the gas-fired water heating apparatus 100 of the present embodiment will be briefly described with reference to fig. 1 to 5:

(a) the first control valve 15 is opened, the fourth control valve 110 is closed, the second control valve 16 is closed, water flows into the mixing device 4 after being heated through the water inlet pipeline 11, after the mixing device 4 is filled, the first control valve 15 is closed, the supercharging device 17 (namely a water pump) is opened to pump water in the mixing device 4, and meanwhile air enters the mixing device 4 through the third control valve 22 through the air path; when the water pump is about to pump the water in the mixing device 4, the first control valve 15 is opened, the second control valve 16 is opened, and simultaneously the water pump stops working, so that the water flowing into the mixing device 4 from the water inlet pipe is mixed with the air in the mixing device 4 and then is discharged from the water outlet through the two paths of the water pump and the second control valve 16, and therefore the hot water with high gas content is obtained.

(b) The first control valve 15 is opened, the fourth control valve 110 is opened, the second control valve 16 is closed, water flows into the mixing device 4, after the mixing tank 41 of the mixing device 4 is filled, the first control valve 15 is closed, the water pump is opened to pump water out of the mixing tank 41, and meanwhile air enters the mixing tank 41 of the mixing device 4 from the air inlet pipeline 21 through the third control valve 22; when the water pump is about to pump the water in the mixing device 4, the first control valve 15 is opened, the second control valve 16 is opened, the water pump stops working, the inlet water is mixed with the air in the mixing tank 41, and the mixture is mixed with the water in the third water outlet pipeline 14 through two paths of the water pump and the second control valve 16 and then discharged from the water outlet, so that the mixed hot water with high gas content is obtained.

(c) The first control valve 15 is closed and the fourth control valve 110 opens the water discharge from the third outlet line 14, whereby ordinary hot water is obtained.

(d) When the water consumption point is closed, the external pipeline and the internal pipeline of the gas water heating equipment 100 form a closed pipeline, the first control valve 15 is opened, the fourth control valve 110 is closed, the second control valve 16 is closed, and the water pump is started; water enters from the water inlet pipeline 11, is heated by the heating system 3 and then enters the mixing device 4, is pressurized by the water pump and flows to an external pipeline to form circulation, so that the function of zero cold water is realized.

(e) First control valve 15 opens, and fourth control valve 110 closes, and second control valve 16 closes, and when opening with the water spot, the water pump starts, and water gets into mixing arrangement 4 after heating through heating system 3 by inlet channel 11, and the water pump is taken the water in the mixing arrangement 4 out and is carried out the pressure boost to the water of taking out, flows out in the first outlet conduit 12 again, increases out water pressure to promote the user and experience with water.

(f) When the gas water heating device 100 is used, water is temporarily turned off and then boiled, the waste heat of the heating system 3 can continuously heat the water in the water inlet pipeline 11, so that the temperature of the outlet water is high (hereinafter referred to as high-temperature water), at the moment, the first control valve 15 is opened, the fourth control valve 110 is closed, the second control valve 16 is opened, the outlet water enters the mixing device 4 and is mixed with the originally residual water (low temperature, hereinafter referred to as warm water) of the mixing device 4, the temperature of the high-temperature water is reduced, the temperature of the warm water is increased, and the outlet water flows out through the first water outlet pipeline 12 and the second water outlet pipeline 13, so that the water using experience of a user is effectively reduced due to overheating or overcooling of the outlet water, and most importantly, the user is prevented from being scalded by the high-temperature water.

Therefore, the gas water heating equipment 100 of the embodiment can obtain common hot water, hot water with high gas content and mixed hot water with gas content between the common hot water and the hot water with high gas content, and when the micro-nano bubble generating device is additionally arranged at a water consumption point (such as a faucet, a shower head and the like) of the gas water heating equipment 100, high-quality micro-nano bubble water and various water outlet effects can be obtained, so that the water consumption experience of a user is greatly improved.

Example two

Referring to fig. 6 and fig. 1 to 5, the difference between the first embodiment and the second embodiment is mainly:

the water inlet pipeline 11 of this embodiment includes a water inlet branch 111 and a water outlet branch 112, the water outlet end of the water inlet branch 111 is connected to the heating device 31, the water inlet end of the water outlet branch 112 is connected to the heating device 31, and the water outlet end of the water outlet branch 112 is connected to the mixing tank 41;

the air inlet pipe 21 of the present embodiment is connected to the water outlet branch 112 at a position between the first control valve 15 and the mixing device 4;

the waterway system 1 of the present embodiment further includes two water flow detection devices 18, wherein one water flow detection device 18 is disposed on the first water outlet pipeline 12, and the other water flow detection device 18 is disposed on the water inlet branch pipeline;

the waterway system 1 of this embodiment further includes two temperature detecting devices 19, wherein one temperature detecting device 19 is disposed on the first water outlet pipeline 12, and the other temperature detecting device 19 is disposed on the water inlet branch 111.

In addition to the above differences, the gas-fired water heating apparatus 100 and other components of the gas-fired water heating apparatus 100 provided in the present embodiment can be optimally designed with reference to the first embodiment, and will not be described in detail herein.

EXAMPLE III

Referring to fig. 7 and fig. 6, the difference between the present embodiment and the second embodiment is mainly:

the inlet line 21 of the present embodiment is connected directly to the mixing device 4.

In addition to the above differences, the gas-fired water heating apparatus 100 and other components of the gas-fired water heating apparatus 100 provided in the present embodiment can be optimally designed with reference to the second embodiment, and will not be described in detail herein.

The above is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. Gas hot water apparatus, characterized in that includes:

a mixing device;

the water path system comprises a water inlet pipeline, a first water outlet pipeline, a second water outlet pipeline, a third water outlet pipeline, a first control valve, a second control valve and a pressurizing device; the water outlet end of the water inlet pipeline is connected with the mixing device, the water inlet end of the first water outlet pipeline and the water inlet end of the second water outlet pipeline are respectively connected with the mixing device, the supercharging device is arranged on the first water outlet pipeline, the first control valve is arranged on the water inlet pipeline, the second control valve is arranged on the second water outlet pipeline, and the water inlet end of the third water outlet pipeline is communicated with the water outlet end of the water inlet pipeline;

the gas path system comprises a gas inlet pipeline and a third control valve, the gas inlet pipeline is used for conveying gas to the mixing device, and the third control valve is arranged on the gas inlet pipeline;

the heating system is used for heating the water flowing through the water inlet pipeline;

and the sterilizing device is arranged in the waterway system.

2. The gas-fired water heating apparatus according to claim 1, wherein the water outlet end of the first water outlet pipeline, the water outlet end of the second water outlet pipeline and the water outlet end of the third water outlet pipeline are communicated with each other, and the number of the sterilizing devices is plural, wherein one of the sterilizing devices is disposed in the water inlet pipeline, and one of the sterilizing devices is disposed at a position where the sterilizing devices are communicated with each other.

3. The gas-fired water heating apparatus according to claim 2, wherein said heating system includes a heating device; the water inlet pipeline comprises a water inlet branch and a water outlet branch; the water outlet end of the water inlet branch is communicated with the heating device, the water inlet end of the water outlet branch is communicated with the heating device, and the mixing device is arranged between the first water outlet pipeline and the water outlet branch; the first control valve is arranged on the water inlet branch or the water outlet branch.

4. The gas-fired water heating apparatus according to claim 3, wherein said air inlet line is connected to said water inlet line at a location between said first control valve and said mixing device;

alternatively, the air inlet pipeline is connected to the mixing device.

5. The gas-fired water heating apparatus according to claim 4, wherein said water passage system further comprises a plurality of water flow detection means, one of said water flow detection means being provided at said intersection and the other of said water flow detection means being provided on said water inlet passage.

6. The gas-fired water heating apparatus according to claim 4, wherein said water path system further comprises a plurality of temperature detecting means, one of said temperature detecting means being provided at said junction communication portion, and the other of said temperature detecting means being provided at said water inlet branch.

7. The gas-fired water heating apparatus according to claim 1, wherein said waterway system further comprises a fourth control valve, said fourth control valve being provided on said third outlet line.

8. The gas-fired water heating apparatus according to any one of claims 1 to 7, wherein the mixing device includes a mixing tank having a mixing chamber and an inlet communicating with the mixing chamber, and a partition provided in the mixing chamber and dividing the mixing chamber into a first chamber and a second chamber; the separator comprises a communicating plate and a closing plate, the communicating plate is provided with a through hole for communicating the first cavity with the second cavity, the communicating plate is connected between the inner side wall of the mixing tank and the closing plate, and the closing plate is opposite to the inlet at intervals.

9. The gas-fired water heating apparatus according to claim 8, wherein said mixing tank has an inner bottom wall spaced opposite said inlet, said number of through holes being plural, and an orthographic area of all of said through holes on said inner bottom wall being not smaller than an orthographic area of said inlet on said inner bottom wall.

10. The gas-fired water heating apparatus according to any one of claims 1 to 7, wherein the third control valve is a check valve or a stop valve.

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