Gas water heating device

Abstract

A gas water heating device (100), comprising: a main unit (10), the main unit (10) being provided with a gas circuit system and a water circuit system; and a fan-pump assembly (20), mounted on the main unit (10), and comprising a driving apparatus (21) and a fan assembly (22) and a water pump assembly (23) separately connected to the driving apparatus (21) and driven thereby. The fan assembly (22) is in communication with the gas circuit system, the water pump assembly (23) is in communication with the water circuit system, and the driving apparatus (21) is used for controlling operation of the fan assembly (22) and the water pump assembly (23), so that the fan assembly (22) drives airflow to flow along the gas circuit system and the water pump assembly (23) drives water flow to flow along the water circuit system.

Description

Gas water heating device

[0001] Related application

[0002] The present application claims priority to the Chinese patent application No. 202411238753.6, filed on September 3, 2024, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of hot water equipment, in particular to a gas hot water equipment. BACKGROUND

[0004] In the related art, some gas hot water equipment is usually provided with a fan and a water pump. However, the fan and the water pump are usually independently arranged, and a set of driving devices needs to be configured respectively, resulting in high cost of the gas hot water equipment; and the fan and the water pump are arranged in a split manner, so that the overall structure is not compact enough, and a large installation space is occupied, resulting in large volume of the gas hot water equipment; in addition, the fan and the water pump need to be installed on the main body of the gas hot water equipment in steps, resulting in low assembly efficiency of the gas hot water equipment. SUMMARY

[0005] The main purpose of the present application is to provide a gas hot water equipment, which aims to reduce the cost of the gas hot water equipment, reduce the volume of the whole machine, and improve the assembly efficiency of the whole machine.

[0006] To achieve the above-mentioned purpose, the gas hot water equipment provided by the present application comprises a main body and a fan and water pump assembly.

[0007] In an embodiment, the main body has a gas path system and a water path system.

[0008] In an embodiment, the fan and water pump assembly is installed on the main body, the fan and water pump assembly comprises a driving device and a fan assembly and a water pump assembly respectively drivingly connected with the driving device, the fan assembly communicates with the gas path system, the water pump assembly communicates with the water path system, and the driving device is used to control the fan assembly and the water pump assembly to operate, so that the fan assembly drives airflow to flow along the gas path system, and the water pump assembly drives water flow to flow along the water path system.

[0009] In an embodiment, the main body comprises a burner, a combustion chamber box body and a heat exchanger arranged in sequence, the combustion chamber box body forms a combustion chamber inside, and a gas passage of the burner, the combustion chamber and a flue gas passage of the heat exchanger are sequentially communicated to form the gas path system, and an air outlet of the fan assembly communicates with the burner, and is used to blow air into the burner and drive airflow to flow along the gas path system.

[0010] In an embodiment, the combustor, the combustion chamber box and the heat exchanger are sequentially arranged from bottom to top, the main body further comprises a fume hood arranged on the top of the heat exchanger, the gas path system further comprises a fume collecting cavity formed in the fume hood, the fume hood is provided with a fume outlet communicating with the fume collecting cavity, and the fan and water pump assembly is arranged at the bottom of the combustor.

[0011] In an embodiment, the main body further comprises a water inlet pipeline and a water outlet pipeline, the water inlet pipeline communicates with the water inlet port of the heat exchanger, the water outlet pipeline communicates with the water outlet port of the heat exchanger, the water inlet pipeline, the heat exchanger and the water outlet pipeline are sequentially communicated to form the water path system, and the water pump assembly is arranged in the water inlet pipeline or the water outlet pipeline.

[0012] In an embodiment, the water inlet pipeline comprises a water inlet connector and a water inlet pipe, the water pump assembly is connected in series between the water inlet connector and the water inlet pipe, and the water inlet connector, the water pump assembly, the water inlet pipe and the water inlet port of the heat exchanger are sequentially communicated; or,

[0013] the water outlet pipeline comprises a water outlet connector and a water outlet pipe, the water pump assembly is connected in series between the water outlet connector and the water outlet pipe, and the water outlet port of the heat exchanger, the water outlet pipe, the water pump assembly and the water outlet connector are sequentially communicated.

[0014] In an embodiment, the gas water heater further comprises a second water pump arranged in the water inlet pipeline, and the second water pump is configured to selectively operate together with the water pump assembly to pressurize the water path system.

[0015] In an embodiment, the second water pump and the water pump assembly are arranged in series in the water inlet pipeline.

[0016] Alternatively, the water inlet pipeline comprises a first water inlet pipe and a second water inlet pipe which respectively communicate with the water inlet end of the water heater, the water pump assembly is arranged in the first water inlet pipe, the second water pump is arranged in the second water inlet pipe, and the water pump assembly and the second water pump are arranged in parallel.

[0017] In an embodiment, the water inlet pipeline comprises a first water inlet pipe and a second water inlet pipe, the water pump assembly is arranged in the first water inlet pipe, two ends of the second water inlet pipe respectively communicate with the first water inlet pipe, the water inlet end of the second water inlet pipe is located at an upstream position of the water inlet end of the water pump assembly, the water outlet end of the second water inlet pipe is located at a downstream position of the water outlet end of the water pump assembly, the second water pump is arranged in the second water inlet pipe to be arranged in parallel with the water pump assembly, the water inlet end of the second water inlet pipe is provided with a one-way valve, and the one-way valve is used to one-way guide the first water inlet pipe to the water inlet end of the second water inlet pipe.

[0018] In an embodiment, the water outlet end of the water outlet pipeline is communicated with the water inlet pipeline, so that the water inlet pipeline, the heat exchanger and the water outlet pipeline are communicated in series to form a zero-cold-water circulation loop, and the second water pump and the water pump assembly are further used to drive water flow to circulate along the zero-cold-water circulation loop.

[0019] In an embodiment, the fan assembly comprises a volute and a fan wheel arranged in the volute, the volute has an air inlet and an air outlet, the water pump assembly comprises a pump shell and a pump wheel arranged in the pump shell, the pump shell has a water inlet and a water outlet, the volute and the pump shell are respectively arranged on two sides of the driving device, the driving device has a first output end and a second output end for torque output, the first output end is drivingly connected with the fan wheel, and the second output end is drivingly connected with the pump wheel.

[0020] In an embodiment, the volute and the pump shell are arranged on opposite sides of the driving device along the axial direction of the fan wheel, the air inlet is arranged on a side of the volute away from the driving device, and the axial direction of the fan wheel is consistent with the width direction or the thickness direction of the main body.

[0021] In an embodiment, the first output end and the second output end are configured to synchronously output torque, so that the fan wheel and the pump wheel synchronously rotate; or,

[0022] The first output end and the second output end are configured to independently output torque, so that the fan wheel and the pump wheel independently rotate.

[0023] In an embodiment, the driving device comprises a rotor, a stator and an output shaft, the rotor is sleeved on the periphery of the output shaft and can drive the output shaft to rotate together, two ends of the output shaft form the first output end and the second output end respectively, the fan wheel and the pump wheel are connected to the two ends of the output shaft respectively, and the stator is sleeved on the periphery of the rotor and forms a magnetic circuit with the rotor to drive the rotor to rotate.

[0024] Alternatively, the driving device comprises a stator, a first rotor and a second rotor, the first rotor is drivingly connected with the fan wheel as the first output end, the second rotor is drivingly connected with the pump wheel as the second output end, and the stator forms a magnetic circuit with the first rotor and the second rotor respectively to drive the first rotor and the second rotor to rotate respectively.

[0025] The technical scheme of the present application is characterized in that a fan water pump assembly is installed on the main body of the gas water heating equipment, the fan assembly of the fan water pump assembly is connected to the gas path system of the main body, the water pump assembly of the fan water pump assembly is connected to the water path system of the main body, and the fan assembly and the water pump assembly share a set of driving devices for driving control. When the gas water heating equipment is working, the fan assembly is controlled to operate by the driving device, and then the airflow can be driven to flow along the gas path system by the fan assembly to realize the fan function; the water pump assembly is controlled to operate by the driving device, and then the water pump function can be realized. In this way, only one set of driving device needs to be configured to realize the functions of the fan and the water pump, which can reduce the cost of the gas water heating equipment; and the integration of the fan water pump assembly is higher, the number of driving devices is reduced, the internal installation space of the gas water heating equipment can be saved, which is beneficial to reducing the volume of the gas water heating equipment and making more installation space available inside the gas water heating equipment for installation of other expansion function modules. When assembling the gas water heating equipment, the fan water pump assembly only needs to be installed on the main body once, which can simplify the installation steps and improve the assembly efficiency of the gas water heating equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Fig. 1 is a structural schematic diagram of a first embodiment of the gas water heating equipment provided by the present application;

[0028] Fig. 2 is a structural schematic diagram of a second embodiment of the gas water heating equipment provided by the present application;

[0029] Fig. 3 is a structural schematic diagram of a third embodiment of the gas water heating equipment provided by the present application;

[0030] Fig. 4 is a structural schematic diagram of a fourth embodiment of the gas water heating equipment provided by the present application;

[0031] Fig. 5 is a structural schematic diagram of a fifth embodiment of the gas water heating equipment provided by the present application;

[0032] Fig. 6 is a brief schematic diagram of an embodiment of the gas water heating equipment provided by the present application;

[0033] Fig. 7 is a structural schematic diagram of an embodiment of the fan water pump assembly provided by the present application;

[0034] Fig. 8 is an exploded structural schematic diagram of the fan water pump assembly in Fig. 7;

[0035] Fig. 9 is a cross-sectional structural schematic diagram of an embodiment of the fan water pump assembly provided by the present application;

[0036] Fig. 10 is a cross-sectional structural schematic diagram of another embodiment of the fan water pump assembly provided by the present application.

[0037] Explanation of reference numerals:

[0038] 100, gas water heating device; 10, main body; 11, burner; 12, combustion chamber box; 13, heat exchanger; 14, smoke hood; 15, water inlet pipeline; 151, water inlet joint; 152, water inlet pipe; 1521, first water inlet pipe; 1522, second water inlet pipe; 16, water outlet pipeline; 161, water outlet joint; 162, water outlet pipe; 20, fan water pump assembly; 21, driving device; 21a, first output end; 21b, second output end; 211, rotor; 211A, first rotor; 211B, second rotor; 212, output shaft; 213, stator; 214, casing; 215, shield cover; 216, fixed shaft; 217, bearing; 22, fan assembly; 221, volute; 2211, air inlet; 2212, air outlet; 222, fan wheel; 23, water pump assembly; 231, pump casing; 2311, water inlet; 2312, water outlet; 232, pump wheel; 30, second water pump; 40, one-way valve.

[0039] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Embodiments of the present application

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] It should be noted that if the present application involves directional indications (such as up, down, left, right, front, back, etc.) in the embodiments, the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0042] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope claimed by the present application.

[0043] In the related art, some gas water heating equipment is usually provided with a fan and a water pump. However, the fan and the water pump are usually independently arranged, and a set of driving device needs to be configured respectively, resulting in high cost of the gas water heating equipment; and the fan and the water pump are arranged in a split manner, the overall structure is not compact, and a large installation space is occupied, resulting in large size of the gas water heating equipment; in addition, the fan and the water pump need to be installed on the main body of the gas water heating equipment in steps, resulting in low assembly efficiency of the gas water heating equipment.

[0044] The present application provides a gas water heating equipment 100, which integrates the fan and the water pump into one, shares a set of driving device 21, can reduce the cost and the overall size of the gas water heating equipment 100, and can improve the assembly efficiency of the whole machine.

[0045] Please refer to FIG. 1 to FIG. 5, in some embodiments of the present application, the gas water heating equipment 100 includes a main body 10 and a fan and water pump assembly 20. The main body 10 has a gas path system and a water path system; the fan and water pump assembly 20 is installed on the main body 10, the fan and water pump assembly 20 includes a driving device 21 and a fan assembly 22 and a water pump assembly 23 driven connected with the driving device 21 respectively, the fan assembly 22 communicates with the gas path system, the water pump assembly 23 communicates with the water path system, the driving device 21 is used for controlling the fan assembly 22 and the water pump assembly 23 to run, so that the fan assembly 22 drives airflow to flow along the gas path system, and the water pump assembly 23 drives water flow to flow along the water path system.

[0046] The gas water heating device 100 includes, but is not limited to, a gas water heater, a gas wall-hanging stove, etc. The main body 10 constitutes the main structure of the gas water heating device 100, and has a gas path system for conveying gas-phase fluid (e.g. gas and flue gas), and a water path system for conveying liquid-phase fluid (e.g. water flow). The fan water pump assembly 20 is installed on the main body 10, and the fan water pump assembly 20 integrates the fan assembly 22 and the water pump assembly 23, and the fan assembly 22 and the water pump assembly 23 share a set of driving devices 21 for driving control, so as to integrate the fan function and the water pump function. The fan assembly 22 is connected to the gas path system, and the fan assembly 22 is controlled to operate by the driving devices 21, so as to drive the airflow to flow along the gas path system by the fan assembly 22. It is worth noting that the gas water heating device 100 can be a strong-drum type gas water heating device 100, or a strong-extraction type gas water heating device 100. For example, in the strong-drum type gas water heating device 100, the air outlet 2212 of the fan assembly 22 is connected to the air inlet end of the gas path system, so that when the fan assembly 22 operates, the external air can be blown into the gas path system, and the airflow can be driven to flow along the air inlet end of the gas path system towards the air outlet end. For another example, in the strong-extraction type gas water heating device 100, the air inlet 2211 of the fan assembly 22 is connected to the air outlet end of the gas path system, so that when the fan assembly 22 operates, the airflow of the gas path system can be sucked into the fan assembly 22, and discharged from the air outlet 2212 of the fan assembly 22. The water pump assembly 23 can be connected to the water inlet pipe 15 or the water outlet pipe 16 of the water path system. The fan assembly 22 and the water pump assembly 23 share a set of driving devices 21, wherein the driving devices 21 can be configured to control the fan assembly 22 and the water pump assembly 23 to operate simultaneously, or the driving devices 21 can be configured to control the fan assembly 22 and the water pump assembly 23 to operate independently of each other, which is not specifically limited here.

[0047] The technical scheme of the present application is characterized in that a fan water pump assembly 20 is installed on the main body 10 of the gas water heating device 100, the fan assembly 22 of the fan water pump assembly 20 is connected to the gas path system of the main body 10, the water pump assembly 23 of the fan water pump assembly 20 is connected to the water path system of the main body 10, and the fan assembly 22 and the water pump assembly 23 share a set of driving devices 21 for driving control. When the gas water heating device 100 is working, the fan assembly 22 is controlled to run by the driving devices 21, and then the airflow can be driven to flow along the gas path system by the fan assembly 22 to realize the function of the fan; the water pump assembly 23 is controlled to run by the driving devices 21, and then the water pump function can be realized. In this way, only one set of driving devices 21 is needed to realize the functions of the fan and the water pump, which can reduce the cost of the gas water heating device 100; and the integration of the fan water pump assembly 20 is higher, the number of driving devices 21 is reduced, the internal installation space of the gas water heating device 100 can be saved, which is beneficial to reduce the volume of the gas water heating device 100 and make more installation space inside the gas water heating device 100 available for the installation of other expansion function modules. When assembling the gas water heating device 100, the fan water pump assembly 20 only needs to be installed on the main body 10 once, which can simplify the installation steps and improve the assembly efficiency of the gas water heating device 100.

[0048] As shown in FIGS. 6 and 7, in an embodiment, the main body 10 includes a burner 11, a combustion chamber box 12 and a heat exchanger 13 arranged in sequence, the combustion chamber box 12 forms a combustion chamber inside, the gas passage of the burner 11, the combustion chamber and the flue gas passage of the heat exchanger 13 are connected in sequence to form the gas path system, and the air outlet 2212 of the fan assembly 22 is connected to the burner 11 for blowing air into the burner 11 and driving the airflow to flow along the gas path system.

[0049] In the present embodiment, the gas water heating device 100 specifically relates to a strong drum type gas water heating device 100, for example, a strong drum type gas water heater. The gas water heating device 100 comprises a burner 11, a combustion chamber box 12 and a heat exchanger 13 arranged in sequence. For example, the burner 11, the combustion chamber box 12 and the heat exchanger 13 can be arranged in sequence from bottom to top along the height direction of the main body 10. Alternatively, the burner 11, the combustion chamber box 12 and the heat exchanger 13 can also be arranged in sequence from top to bottom along the height direction of the main body 10 to form a gas water heating device 100 with an inverted combustion system. The burner 11 has a gas passage for conveying combustion gas (including gas and air), the combustion chamber box 12 is internally configured with a through-going combustion chamber, and the heat exchanger 13 can comprise two opposite end plates and a heat exchange body arranged between the two end plates, the heat exchange body can comprise heat exchange tubes and fin groups sleeved on the periphery of the heat exchange tubes, and a flue gas passage for flue gas to pass through is formed between the two end plates, and a water flow passage for water flow to pass through is formed in the heat exchange tubes. The gas passage of the burner 11, the combustion chamber of the combustion chamber box 12 and the flue gas passage of the heat exchanger 13 are sequentially communicated to form a gas path system. When the gas water heating device 100 is working, gas and air can be conveyed to the burner 11 through the gas passage, ignited and combusted by the burner 11 to generate high-temperature flue gas, the high-temperature flue gas flows along the combustion chamber towards the heat exchanger 13, and the flue gas passes through the flue gas passage of the heat exchanger 13 to heat the water flow in the heat exchanger 13. The fan assembly 22 has an air inlet 2211 and an air outlet 2212, the air outlet 2212 of the fan assembly 22 communicates with the burner 11, when the fan assembly 22 is running, external air can enter the fan assembly 22 through the air inlet 2211, and then be blown into the burner 11 through the air outlet 2212 to provide sufficient air for gas combustion; and the fan assembly 22 can generate negative pressure at the air inlet 2211 when running, thereby driving the gas flow to flow along the gas path system, so that the high-temperature flue gas in the gas path system can quickly flow to the heat exchanger 13 for heat exchange, thereby improving the heat exchange efficiency.

[0050] As shown in FIG. 6, in an embodiment, the burner 11, the combustion chamber box 12 and the heat exchanger 13 are arranged in sequence from bottom to top, the main body 10 further comprises a smoke collecting hood 14 covering the top of the heat exchanger 13, the gas path system further comprises a smoke collecting cavity formed in the smoke collecting hood 14, the smoke collecting hood 14 is provided with a smoke outlet communicating with the smoke collecting cavity, and the fan water pump assembly 20 is arranged at the bottom of the burner 11.

[0051] In the present embodiment, the fan water pump assembly 20, the combustion chamber box 12, the heat exchanger 13 and the smoke hood 14 are arranged in sequence from bottom to top. The fan assembly 22 of the fan water pump assembly 20 can be used as a strong blower to realize the air blowing function. When the gas water heating device 100 is working, the driving device 21 of the fan water pump assembly 20 drives the fan assembly 22 to operate, so as to blow air into the burner 11 to provide sufficient air for gas combustion, and drive the high-temperature flue gas generated by the combustion of the burner 11 to flow along the combustion chamber box 12 towards the heat exchanger 13 to exchange heat with the heat exchanger 13. The flue gas after heat exchange is collected in the smoke collecting cavity of the smoke hood 14 and then discharged through the smoke outlet.

[0052] As shown in FIGS. 1, 2 and 6, in some embodiments, the main body 10 further comprises a water inlet pipeline 15 and a water outlet pipeline 16. The water inlet pipeline 15 communicates with the water inlet port of the heat exchanger 13, and the water outlet pipeline 16 communicates with the water outlet port of the heat exchanger 13. The water inlet pipeline 15, the heat exchanger 13 and the water outlet pipeline 16 are sequentially communicated to form the water system, and the water pump assembly 23 is arranged in the water inlet pipeline 15 or the water outlet pipeline 16.

[0053] In the present embodiment, the heat exchanger 13 has a water inlet port for inputting cold water and a water outlet port for outputting hot water. The water inlet port and the water outlet port can be arranged on opposite sides of the heat exchanger 13, or the water inlet port and the water outlet port can be arranged on the same side of the heat exchanger 13. The water inlet pipeline 15, the heat exchanger 13 and the water outlet pipeline 16 are sequentially communicated to form the water system. When the gas water heating device 100 is working, the driving device 21 of the fan water pump assembly 20 drives the water pump assembly 23 to operate, so that the external cold water can be transported into the heat exchanger 13 through the water inlet pipeline 15 for heating, and the heated hot water can be output through the water outlet pipeline 16 to provide hot water for users. The water pump assembly 23 can be connected in series with the water inlet pipeline 15 or the water outlet pipeline 16 to pressurize the water system. When the water pump assembly 23 is arranged on the water inlet pipeline 15, the cold water passing through the water pump assembly 23 can also cool the heat generating components (such as motors, circuit boards, etc.) of the driving device 21 of the fan water pump assembly 20, thereby prolonging the service life of the fan water pump assembly 20.

[0054] The following examples are provided for several installation scenarios of the fan water pump assembly 20.

[0055] As shown in FIG. 1, in an embodiment, the water inlet pipeline 15 comprises a water inlet joint 151 and a water inlet pipe 152. The water pump assembly 23 is connected in series between the water inlet joint 151 and the water inlet pipe 152. The water inlet joint 151, the water pump assembly 23, the water inlet pipe 152 and the water inlet port of the heat exchanger 13 are sequentially communicated.

[0056] In the present embodiment, the water inlet joint 151 is connected to the water inlet port 2311 of the water pump assembly 23, and the water outlet port 2312 of the water pump assembly 23 is communicated with the water inlet port of the heat exchanger 13 via the water inlet pipe 152, so that the water pump assembly 23 is connected in series on the water inlet pipeline 15. Exemplarily, the water inlet pipeline 15 and the water outlet pipeline 16 are arranged on opposite sides of the main body 10 along the width direction of the main body 10, for example, the water inlet pipeline 15 is located on the right side of the main body 10, and the water outlet pipeline 16 is located on the left side of the main body 10. The water inlet pipe 152 and the water outlet pipe 162 extend downward from the two sides of the heat exchanger 13, respectively, the water inlet joint 151 is arranged at the bottom end of the water inlet pipe 152, and the water outlet joint 161 is arranged at the bottom end of the water outlet pipe 162. The fan water pump assembly 20 is installed on the bottom of the main body 10 close to one side of the water inlet pipeline 15, and the water inlet joint 151 is arranged close to the fan water pump assembly 20, so as to shorten the pipeline length between the water pump assembly 23 and the water inlet joint 151. The air outlet 2212 of the fan assembly 22 of the fan water pump assembly 20 is communicated with the burner 11, and when the fan water pump assembly 20 works, the driving device 21 drives the fan assembly 22 and the water pump assembly 23 to operate at the same time, so as to provide air for the gas combustion in the burner 11 by the fan assembly 22, and at the same time, the water flow of the water pipeline system can be pressurized by the water pump assembly 23. The cold water passing through the water pump assembly 23 can also cool the heating components (such as motor, circuit board, etc.) of the driving device 21, thereby prolonging the service life of the fan water pump assembly 20. Moreover, in some embodiments, when the water inlet pipeline 15 and the water outlet pipeline 16 of the gas water heater 100 are communicated to form a zero-cold-water circulation loop, the cold water remaining in the water outlet pipeline 16 can also be driven by the water pump assembly 23 to circulate along the zero-cold-water circulation loop for preheating, so as to realize the zero-cold-water function.

[0057] As shown in FIG. 2, in an embodiment, the water outlet pipeline 16 includes a water outlet joint 161 and a water outlet pipe 162, the water pump assembly 23 is connected in series between the water outlet joint 161 and the water outlet pipe 162, and the water outlet port of the heat exchanger 13, the water outlet pipe 162, the water pump assembly 23 and the water outlet joint 161 are communicated in sequence.

[0058] In the present embodiment, the water outlet port of the heat exchanger 13 is connected to the water inlet 2311 of the water pump assembly 23 via the water outlet pipe 162, and the water outlet 2312 of the water pump assembly 23 is connected to the water inlet of the water outlet joint 161, so that the water pump assembly 23 is connected in series to the water outlet pipeline 16. The hot water in the heat exchanger 13 can be transported to the water pump assembly 23 via the water outlet pipe 162, and then transported to the water outlet joint 161 by the water pump assembly 23. Exemplarily, the water inlet port and the water outlet port of the heat exchanger 13 are located on the same side, and the water inlet pipe 152 and the water outlet pipe 162 are arranged to extend downward from the same side of the heat exchanger 13, the water inlet joint 151 is arranged at the bottom end of the water inlet pipe 152, and the water outlet joint 161 is arranged at the bottom end of the water outlet pipe 162. In order to facilitate the connection of external pipelines, in an embodiment, the water inlet joint 151 and the water outlet joint 161 are located on opposite sides of the main body 10 in the width direction. The fan water pump assembly 20 is installed on the bottom of the main body 10 near one side of the water outlet joint 161, which can shorten the length of the pipeline between the water pump assembly 23 and the water outlet joint 161. When the fan water pump assembly 20 is working, the fan assembly 22 and the water pump assembly 23 are simultaneously driven to operate by the driving device 21, so that the fan assembly 22 provides air for the combustion of the gas in the burner 11, and at the same time, the water flow of the water system can be boosted by the water pump assembly 23. When the water inlet pipeline 15 and the water outlet pipeline 16 of the gas water heater 100 are connected to form a zero-cold-water circulation loop, the cold water remaining in the water outlet pipeline 16 can also be driven to circulate along the zero-cold-water circulation loop by the water pump assembly 23 for preheating, so as to realize the zero-cold-water function.

[0059] As shown in FIGS. 3 to 5, in some embodiments, the gas water heater 100 further comprises a second water pump 30 arranged in the water inlet pipeline 15, and the second water pump 30 is configured to selectively operate with the water pump assembly 23 to boost the water system.

[0060] In the present embodiment, when the water pump assembly 23 of the fan water pump assembly 20 is in operation, the second water pump 30 can be selectively turned on or off under the control of the control system according to the user's demand. For example, when a stronger boosting effect is needed during the user's water use, the water pump assembly 23 of the fan water pump assembly 20 and the second water pump 30 operate simultaneously, and under the joint action of the two, a stronger boosting effect can be achieved on the water system. In addition, when the water inlet pipeline 15 and the water outlet pipeline 16 of the gas water heater 100 are connected to form a zero-cold-water circulation loop, the cold water remaining in the water outlet pipeline 16 can also be driven to circulate along the zero-cold-water circulation loop by the joint action of the water pump assembly 23 of the fan water pump assembly 20 and the second water pump 30 for preheating, so as to increase the circulation flow and reduce the waiting time of the user.

[0061] In the present embodiment, when the water pump assembly 23 of the fan water pump assembly 20 is in operation, the second water pump 30 can be selectively turned on or off under the control of the control system according to the user's demand. For example, when a stronger boosting effect is needed during the user's water use, the water pump assembly 23 of the fan water pump assembly 20 and the second water pump 30 operate simultaneously, and under the joint action of the two, a stronger boosting effect can be achieved on the water system. In addition, when the water inlet pipeline 15 and the water outlet pipeline 16 of the gas water heater 100 are connected to form a zero-cold-water circulation loop, the cold water remaining in the water outlet pipeline 16 can also be driven to circulate along the zero-cold-water circulation loop by the joint action of the water pump assembly 23 of the fan water pump assembly 20 and the second water pump 30 for preheating, so as to increase the circulation flow and reduce the waiting time of the user.

[0062] As shown in FIG. 3, in an embodiment, the second water pump 30 and the water pump assembly 23 are arranged in series on the water inlet pipeline 15. For example, the water inlet pipeline 15 comprises a water inlet joint 151 and a water inlet pipe 152, the water pump assembly 23 is arranged in series between the water inlet joint 151 and the water inlet pipe 152, and the second water pump 30 is arranged in series on the water inlet pipe 152 and downstream of the water outlet 2312 of the water pump assembly 23. In this way, by arranging a second water pump 30 in series at the rear end of the fan water pump assembly 20, the water flow can be boosted twice to provide more water flow options; the second water pump 30 in series can be turned on and off according to user needs, providing stronger boosting effect during user water use, and can also work together with the fan water pump assembly 20 during zero cold water circulation to increase circulation flow and reduce user waiting time.

[0063] As shown in FIG. 4, in another embodiment, the water inlet pipeline 15 comprises a first water inlet pipe 1521 and a second water inlet pipe 1522 which are respectively connected to the water inlet end of the water heater, the water pump assembly 23 is arranged on the first water inlet pipe 1521, the second water pump 30 is arranged on the second water inlet pipe 1522, and the water pump assembly 23 and the second water pump 30 are arranged in parallel. In this way, the water pump assembly 23 and the second water pump 30 can be arranged in parallel on the water inlet pipeline 15 to boost the water flow twice and provide more water flow options. The second water pump 30 in parallel can be turned on and off according to user needs, providing stronger boosting effect during user water use, and can also work together with the fan water pump assembly 20 during zero cold water circulation to increase circulation flow and reduce user waiting time. In addition, the second water pump 30 in parallel and the fan water pump assembly 20 are not on the same pipeline, so when the second water pump 30 in parallel is not started, the water flow will not pass through the pipeline where the second water pump 30 in parallel is located, which can reduce the pipeline resistance compared with series connection.

[0064] As shown in FIG. 4, in an embodiment, the water inlet pipeline 15 comprises a first water inlet pipe 1521 and a second water inlet pipe 1522, the water pump assembly 23 is arranged on the first water inlet pipe 1521, the two ends of the second water inlet pipe 1522 are respectively connected to the first water inlet pipe 1521, the water inlet end of the second water inlet pipe 1522 is located at a position upstream of the water inlet end of the water pump assembly 23, the water outlet end of the second water inlet pipe 1522 is located at a position downstream of the water outlet end of the water pump assembly 23, the second water pump 30 is arranged on the second water inlet pipe 1522 to be arranged in parallel with the water pump assembly 23, and the water inlet end of the second water inlet pipe 1522 is provided with a one-way valve 40 for unidirectional conduction of the first water inlet pipe 1521 towards the water inlet end of the second water inlet pipe 1522.

[0065] In the embodiment, the water pump assembly 23 and the second water pump 30 are connected in series on the first water inlet pipe 1521 and the second water inlet pipe 1522 respectively, so that the water pump assembly 23 and the second water pump 30 are arranged in parallel. In addition, the water inlet end of the second water inlet pipe 1522 is provided with a one-way valve 40, which is used to one-way guide the first water inlet pipe 1521 to the water inlet end of the second water inlet pipe 1522, that is, the cold water in the first water inlet pipe 1521 entering from the water inlet connector 151 can flow into the second water inlet pipe 1522 through the one-way valve 40, while the water in the second water inlet pipe 1522 is prohibited from flowing back to the first water inlet pipe 1521 through the one-way valve 40. In this way, when the second water pump 30 does not work and only the fan water pump assembly 20 operates, the water flow pressurized by the fan water pump assembly 20 can be prevented from flowing back to the first water inlet pipe 1521 from the water inlet end of the second water inlet pipe 1522.

[0066] In addition, as shown in FIG. 5, in an embodiment, the water pump assembly 23 of the fan water pump assembly 20 is connected in series on the water outlet pipe 16, and the second water pump 30 is connected in series on the water inlet pipe 15. At this time, the water pump assembly 23 and the second water pump 30 are connected in series on the water circuit system, so that the water flow can be pressurized twice to provide more water flow options. The second water pump 30 can be turned on and off according to user needs, so as to have a stronger pressurization effect during user water use, or can work together with the fan water pump assembly 20 to increase the circulation flow and reduce the waiting time of the user during zero cold water circulation.

[0067] In an embodiment, the water outlet end of the water outlet pipe 16 communicates with the water inlet pipe 15, so that the water inlet pipe 15, the heat exchanger 13 and the water outlet pipe 16 are connected in series to form a zero cold water circulation loop. The second water pump 30 and the water pump assembly 23 are further used to drive the water flow to circulate along the zero cold water circulation loop.

[0068] In the embodiment, the gas water heating device 100 also has a zero cold water function. When the zero cold water function is started, the second water pump 30 and the fan water pump assembly 20 can be controlled to operate simultaneously to drive the cold water remaining in the water outlet pipe 16 to circulate along the zero cold water circulation loop. The cold water remaining in the water outlet pipe 16 can flow back to the water inlet pipe 15 and then be delivered to the heat exchanger 13 for heating. In this way, hot water can be output when the user opens the water using device, so as to realize the zero cold water function. In addition, through the joint action of the water pump assembly 23 of the fan water pump assembly 20 and the second water pump 30, the circulation flow can be increased and the waiting time of the user can be reduced.

[0069] On the basis of the above-mentioned embodiments, the driving device 21 can be configured to control the fan assembly 22 and the water pump assembly 23 to operate simultaneously, or the driving device 21 can also be configured to control the fan assembly 22 and the water pump assembly 23 to operate independently of each other. The specific embodiments of the driving device 21 are described below.

[0070] As shown in FIGS. 7 and 8, in an embodiment, the fan assembly 22 includes a volute 221 and a fan wheel 222 arranged in the volute 221, the volute 221 has an air inlet 2211 and an air outlet 2212, the water pump assembly 23 includes a pump shell 231 and a pump wheel 232 arranged in the pump shell 231, the pump shell 231 has a water inlet 2311 and a water outlet 2312, the volute 221 and the pump shell 231 are arranged on two sides of the driving device 21 respectively, the driving device 21 has a first output end 21a and a second output end 21b for torque output, the first output end 21a is drivingly connected with the fan wheel 222, and the second output end 21b is drivingly connected with the pump wheel 232.

[0071] In the present embodiment, the volute 221 is configured to form a fan cavity for accommodating the fan wheel 222, the volute 221 has the air inlet 2211 and the air outlet 2212 which are in communication with the fan cavity, wherein the air inlet 2211 of the volute 221 is also the air inlet 2211 of the fan assembly 22, and the air outlet 2212 of the volute 221 is also the air outlet 2212 of the fan assembly 22. The pump shell 231 is configured to form a pump cavity for accommodating the pump wheel 232, the pump shell 231 has the water inlet 2311 and the water outlet 2312 which are in communication with the pump cavity, wherein the water inlet 2311 of the pump shell 231 is also the water inlet 2311 of the water pump assembly 23, and the water outlet 2312 of the pump shell 231 is also the water outlet 2312 of the water pump assembly 23. The driving device 21 has the first output end 21a and the second output end 21b capable of torque output, wherein the first output end 21a and the second output end 21b can be configured to synchronously output torque, or can be configured to independently output torque. The first output end 21a can be directly drivingly connected with the fan wheel 222, or the first output end 21a can be indirectly drivingly connected with the fan wheel 222 through a transmission structure; the second output end 21b can be directly drivingly connected with the pump wheel 232, or the second output end 21b can be indirectly drivingly connected with the pump wheel 232 through a transmission structure. The first output end 21a and the fan wheel 222 can adopt contact power transmission or non-contact power transmission. The second output end 21b and the pump wheel 232 can adopt contact power transmission or non-contact power transmission.

[0072] The driving device 21 generates power when working, outputs torque through the first output end 21a to transmit power to the impeller 222, and drives the impeller 222 to rotate at a certain speed. When the impeller 222 rotates, it can do work on the gas-phase fluid in the fan cavity to drive the gas-phase fluid to flow from the air inlet 2211 to the air outlet 2212 at a preset flow rate, thereby realizing the function of the fan. The driving device 21 outputs torque through the second output end 21b to transmit power to the pump wheel 232, and drives the pump wheel 232 to rotate at a certain speed. When the pump wheel 232 rotates, it can do work on the liquid-phase fluid in the pump cavity to drive the liquid-phase fluid to flow from the liquid inlet to the liquid outlet at a preset flow rate, thereby realizing the function of the water pump. In an embodiment, the fan cavity is formed by the volute 221 and the driving device 21 together, that is, the volute 221 has an opening facing the driving device 21. When the volute 221 and the driving device 21 are assembled in place, one side end surface of the driving device 21 can function as a volute cover plate to cover the opening of the volute 221, so that the volute cover plate can be omitted, thereby saving materials, reducing costs, and reducing the volume of the fan and pump assembly 20. In an embodiment, the pump cavity is formed by the pump shell 231 and the driving device 21 together, that is, the pump shell 231 has an opening facing the driving device 21. When the pump shell 231 and the driving device 21 are assembled in place, the other side end surface of the driving device 21 can function as a pump shell cover plate to cover the opening of the pump shell 231, so that the pump shell cover plate can be omitted, thereby saving materials, reducing costs, and reducing the volume of the fan and pump assembly 20. In an embodiment, a sealing structure is provided at the connection part of the pump shell 231 and the driving device 21 to ensure the sealing performance of the pump cavity. The driving device 21 includes but is not limited to a single-shaft double-head motor, a double-rotor single-stator motor, a double-rotor double-stator motor, etc.

[0073] As shown in FIGS. 1 and 8, in an embodiment, the volute 221 and the pump shell 231 are disposed on opposite sides of the driving device 21 along the axial direction of the impeller 222. The air inlet 2211 is provided on the side of the volute 221 away from the driving device 21. The axial direction of the impeller 222 is consistent with the width direction or the thickness direction of the main body 10.

[0074] In the embodiment, the volute 221 and the pump shell 231 are arranged on opposite sides of the driving device 21 along the axial direction of the fan wheel 222, so that the overall structure is arranged more regular and compact. The volute 221 is provided with an air inlet 2211 on the side away from the driving device 21, and the volute 221 can be provided with an air outlet 2212 on the circumferential side. The fan wheel 222 can be a centrifugal fan wheel arranged in the volute 221, so that axial air inlet and circumferential air outlet can be achieved. In an embodiment, the fan wheel 222 includes at least two layers of impellers arranged along the axial direction. The fan wheel 222 adopts at least two layers of impellers, which is beneficial to improve the aerodynamic performance, reduce noise and improve work efficiency. In addition, in actual application, the width direction of the main body 10 is generally the left-right direction, and the thickness direction of the main body 10 is generally the front-back direction. In the related art, the axial direction of the fan wheel of some gas water heating equipment is consistent with the thickness direction of the main body 10, and the air inlet of the fan is directed to the front side of the main body 10. The front side of the main body 10 is generally the side facing the user, so that the user will feel greater fan noise. In an embodiment, the axial direction of the fan wheel 222 is arranged to be consistent with the width direction of the main body 10, that is, the axial direction of the fan wheel 222 is along the left-right direction. The fan assembly 22 and the water pump assembly 23 are arranged on the left and right sides of the driving device 21, and the air inlet 2211 is arranged on the side of the fan assembly 22 away from the driving device 21. The air inlet 2211 of the fan assembly 22 can be directed to the left side or the right side of the main body 10, avoiding the air inlet 2211 of the fan assembly 22 being directed to the front side of the main body 10, which is beneficial to reduce the fan noise felt by the user and improve the user experience. Of course, in some embodiments, the axial direction of the fan wheel 222 can also be arranged to be consistent with the thickness direction of the main body 10.

[0075] In an embodiment, the first output end 21a and the second output end 21b are configured to output torque synchronously, so that the fan wheel 222 and the pump wheel 232 rotate synchronously. In this way, when the fan and water pump assembly 20 is running, the driving device 21 can drive the fan wheel 222 and the pump wheel 232 to rotate at the same speed, so as to realize the functions of the fan and the water pump at the same time.

[0076] In another embodiment, the first output end 21a and the second output end 21b are configured to output torque independently of each other, so that the wind wheel 222 and the pump wheel 232 rotate independently of each other. That is, the torque output by the first output end 21a and the second output end 21b is independent of each other and does not interfere with each other. For example, the first output end 21a and the second output end 21b can output the same size of torque, or can output different sizes of torque; for another example, the first output end 21a and the second output end 21b can output torque at the same time, or one of them outputs torque and the other does not work. It can be understood that the torque output by the first output end 21a and the second output end 21b is independent of each other, so that the wind wheel 222 and the pump wheel 232 can operate independently of each other, for example, the wind wheel 222 and the pump wheel 232 can rotate synchronously or asynchronously, for another example, the rotational speed of the wind wheel 222 and the pump wheel 232 can be the same or different; in this way, different working conditions can be better adapted.

[0077] As shown in FIG. 9, in an embodiment, the driving device 21 comprises a rotor 211, a stator 213 and an output shaft 212, the rotor 211 is sleeved on the periphery of the output shaft 212 and can drive the output shaft 212 to rotate together, the two ends of the output shaft 212 form the first output end 21a and the second output end 21b respectively, the wind wheel 222 and the pump wheel 232 are connected to the two ends of the output shaft 212 respectively, and the stator 213 is sleeved on the periphery of the rotor 211 and forms a magnetic circuit with the rotor 211 to drive the rotor 211 to rotate.

[0078] In the embodiment, the driving device 21 can adopt a single-shaft double-head motor. The driving device 21 comprises a rotor 211, a stator 213 and an output shaft 212. The stator 213 is fixed in a housing 214 of the driving device 21, for example, the stator 213 can be assembled in a cavity of the housing 214, or the stator 213 can be integrally plasticized in a shell wall of the housing 214. The stator 213 can comprise a stator 213 core and a winding coil arranged on the stator 213 core, the winding coil is energized to drive the rotor 211 to rotate. In an embodiment, the stator 213 further comprises an insulation system coated on the surface of the stator 213 core, the winding coil can be separated from the stator 213 core through the insulation system to avoid scratching the winding coil or causing short circuit risk. Among them, the insulation system can be realized by spraying an insulation layer on the surface of the stator 213 core, or by assembling an insulation skeleton outside the stator 213 core. The rotor 211 is accommodated in the inner cavity of the stator 213, the output shaft 212 penetrates the center position of the rotor 211, the two ends of the output shaft 212 respectively penetrate out of the two sides of the housing 214, the end of the output shaft 212 close to the volute 221 forms a first output end 21a to connect the wind wheel 222, and the end of the output shaft 212 close to the pump shell 231 forms a second output end 21b to connect the pump wheel 232. When the winding coil of the stator 213 is energized, the rotor 211 can be driven to rotate, the rotor 211 rotating can drive the output shaft 212 to rotate together, so as to drive the wind wheel 222 and the pump wheel 232 to rotate synchronously through the output shaft 212, at this time the wind wheel 222 and the pump wheel 232 can realize simultaneous, same direction and same speed rotation.

[0079] As shown in FIG. 10, in an embodiment, the driving device 21 comprises a stator 213, a first rotor 211A and a second rotor 211B, the first rotor 211A is driven to connect the wind wheel 222 as the first output end 21a, the second rotor 211B is driven to connect the pump wheel 232 as the second output end 21b, and the stator 213 and the first rotor 211A and the second rotor 211B form a magnetic circuit to drive the first rotor 211A and the second rotor 211B to rotate, respectively.

[0080] In the embodiment, the driving device 21 can adopt a double rotor motor. The two rotors 211 of the double rotor motor drive the wind wheel 222 and the pump wheel 232 respectively. Thus, only one set of electric control system is needed to control the double rotor motor to work, and the wind wheel 222 and the pump wheel 232 can be driven to rotate by the double rotor motor. The driving device 21 comprises a stator 213, a first rotor 211A and a second rotor 211B. The first rotor 211A and the second rotor 211B can be arranged along the radial direction of the stator 213, or the first rotor 211A and the second rotor 211B can be arranged along the axial direction of the stator 213. The stator 213 and the first rotor 211A form a first magnetic circuit through an air gap, and the coil winding of the stator 213 can drive the first rotor 211A to rotate through the magnetic field of the first magnetic circuit, and then drive the wind wheel 222 to rotate through the first rotor 211A. The stator 213 and the second rotor 211B form a second magnetic circuit through an air gap, and the coil winding of the stator 213 can drive the second rotor 211B to rotate through the magnetic field of the second magnetic circuit, and then drive the pump wheel 232 to rotate through the second rotor 211B. The first rotor 211A and the second rotor 211B share one stator 213, and the overall structure is simpler, the cost is lower, and the volume is smaller.

[0081] As shown in FIG. 10, in an embodiment, the stator 213 is arranged in a ring shape, the first rotor 211A is arranged around the periphery of the stator 213, and the second rotor 211B is arranged in the inner cavity of the stator 213. In the embodiment, the first rotor 211A is an outer rotor rotatably sleeved around the periphery of the stator 213, and the second rotor 211B is an inner rotor rotatably arranged in the inner cavity of the stator 213. Thus, the first rotor 211A and the second rotor 211B are arranged along the radial direction of the stator 213, the overall arrangement structure is simple, and it is beneficial to reduce the size of the driving device 21 in the axial direction, and then reduce the volume of the fan and pump assembly 20.

[0082] As shown in FIG. 10, in an embodiment, the driving device further comprises a shielding cover 215, the stator 213 is sleeved around the periphery of the shielding cover 215, the first rotor 211A is sleeved around the periphery of the stator 213 and is rotatably connected with the shielding cover 215, and the second rotor 211B is rotatably arranged in the shielding cover 215. In the embodiment, the shielding cover 215 can be used as a mounting carrier of the stator 213, the first rotor 211A and the second rotor 211B, so as to facilitate the mounting of the three. By arranging the shielding cover 215, the second rotor 211B can be separated from the stator 213, and the dry and wet isolation effect can be achieved, so as to prevent the water in the pump cavity from entering the stator 213, and to ensure the safety of the driving device 21. The stator 213 and the shielding cover 215 can be fixed by pouring glue (such as pouring epoxy resin material) or BMC injection.

[0083] As shown in FIG. 10, in an embodiment, the shield 215 is provided with a bearing 217, the first rotor 211A includes a rotor shell, a first magnetic ring and a first rotating shaft, the rotor shell is sleeved on the periphery of the stator 213, the first magnetic ring is fixed on the inner circumferential surface of the rotor shell and is arranged opposite to the stator 213, one end of the first rotating shaft is connected with the bearing 217, the other end is connected with the rotor shell, and the wind wheel 222 is connected with the rotor shell. In the embodiment, the first magnetic ring can be fixed on the inner circumferential surface of the rotor shell by means of gluing or fastener connection or the like, one end of the first rotating shaft is connected with the bearing 217 in the shield 215, and the other end of the first rotating shaft can be connected and fixed with the rotor shell by means of fastener connection or interference fit or the like, and the first rotor 211A can be stably supported by the bearing 217 to ensure the stability of the rotation of the first rotor 211A. The wind wheel 222 and the rotor shell can be integrally formed or can be in a split structure and then assembled and fixed. For example, the wind wheel 222 and the rotor shell can be sleeved and interference-fitted by stamping.

[0084] As shown in FIG. 10, in an embodiment, the drive device 21 further includes a fixed shaft 216, one end of the fixed shaft 216 is connected with the pump shell 231, the other end is connected with the shield 215, the second rotor 211B includes a shaft sleeve, a second rotating shaft and a second magnetic ring which are sequentially sleeved on the periphery of the fixed shaft 216 from inside to outside, and the second rotating shaft is connected with the pump wheel 232. In the embodiment, the fixed shaft 216 is fixed relative to the shield 215 and the pump shell 231, the shaft sleeve is rotatably sleeved on the periphery of the fixed shaft 216, the second rotating shaft is fixed on the periphery of the shaft sleeve, and the second magnetic ring is fixed on the periphery of the second rotating shaft. The second magnetic ring and the stator 213 form a second magnetic circuit through an air gap. The magnetic field in the second magnetic circuit drives the second magnetic ring to rotate, and then drives the second rotating shaft to rotate through the second magnetic ring, and drives the pump wheel 232 to rotate through the second rotating shaft, thereby realizing the water pump function.

[0085] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A gas water heating apparatus wherein, The gas water heating device comprises: a main body having a gas path system and a water path system; and a fan water pump assembly installed on the main body, the fan water pump assembly comprising a driving device and a fan assembly and a water pump assembly respectively drivingly connected with the driving device, the fan assembly communicating with the gas path system, the water pump assembly communicating with the water path system, the driving device being used for controlling the fan assembly and the water pump assembly to operate so as to drive airflow to flow along the gas path system and to drive water flow to flow along the water path system.

2. The gas water heating apparatus as claimed in claim 1, wherein, The main body comprises a burner, a combustion chamber box and a heat exchanger arranged in sequence, a combustion chamber is formed inside the combustion chamber box, a gas passage of the burner, the combustion chamber and a flue gas passage of the heat exchanger are communicated in sequence to form the gas path system, an air outlet of the fan assembly is communicated with the burner for blowing air into the burner and driving airflow to flow along the gas path system.

3. The gas water heating apparatus as claimed in claim 2, wherein, The burner, the combustion chamber box and the heat exchanger are arranged in sequence from bottom to top, the main body further comprises a smoke collecting hood arranged on the top of the heat exchanger, the gas path system further comprises a smoke collecting cavity formed in the smoke collecting hood, the smoke collecting hood is provided with a smoke outlet communicated with the smoke collecting cavity, and the fan water pump assembly is arranged at the bottom of the burner.

4. Gas water heating apparatus as claimed in claim 2 or 3, wherein, The main body further comprises a water inlet pipeline and a water outlet pipeline, the water inlet pipeline is communicated with a water inlet port of the heat exchanger, the water outlet pipeline is communicated with a water outlet port of the heat exchanger, the water inlet pipeline, the heat exchanger and the water outlet pipeline are communicated in sequence to form the water path system, and the water pump assembly is arranged in the water inlet pipeline or the water outlet pipeline.

5. The gas water heating apparatus as claimed in claim 4, wherein, The water inlet pipeline comprises a water inlet connector and a water inlet pipe, the water pump assembly is connected in series between the water inlet connector and the water inlet pipe, and the water inlet connector, the water pump assembly, the water inlet pipe and the water inlet port of the heat exchanger are communicated in sequence; or The water outlet pipeline comprises a water outlet connector and a water outlet pipe, the water pump assembly is connected in series between the water outlet connector and the water outlet pipe, and the water outlet port of the heat exchanger, the water outlet pipe, the water pump assembly and the water outlet connector are communicated in sequence.

6. Gas water heating apparatus as claimed in claim 4 or 5 wherein, The gas water heating device further comprises a second water pump arranged in the water inlet pipeline, the second water pump is configured to selectively operate together with the water pump assembly to pressurize the water path system.

7. The gas water heating apparatus as claimed in claim 6, wherein, The second water pump and the water pump assembly are arranged in series in the water inlet pipeline; or, the water inlet pipeline comprises a first water inlet pipe and a second water inlet pipe respectively communicated with the water inlet port of the water heater, the water pump assembly is arranged in the first water inlet pipe, the second water pump is arranged in the second water inlet pipe, and the water pump assembly and the second water pump are arranged in parallel.

8. Gas water heating apparatus as claimed in claim 6 or 7 wherein, The water inlet pipeline comprises a first water inlet pipeline and a second water inlet pipeline, the water pump assembly is arranged in the first water inlet pipeline, two ends of the second water inlet pipeline are communicated with the first water inlet pipeline respectively, the water inlet end of the second water inlet pipeline is located at a position upstream of the water inlet end of the water pump assembly, the water outlet end of the second water inlet pipeline is located at a position downstream of the water outlet end of the water pump assembly, the second water pump is arranged in the second water inlet pipeline to be arranged in parallel with the water pump assembly, the water inlet end of the second water inlet pipeline is provided with a one-way valve, and the one-way valve is used for unidirectionally conducting the first water inlet pipeline to the water inlet end of the second water inlet pipeline.

9. The gas water heating apparatus as claimed in any one of claims 6 to 8 wherein, The water outlet end of the water outlet pipeline is communicated with the water inlet pipeline, so that the water inlet pipeline, the heat exchanger and the water outlet pipeline are communicated in series to form a zero-cold-water circulation loop, and the second water pump and the water pump assembly are also used for driving water flow to circulate along the zero-cold-water circulation loop.

10. The gas water heating apparatus as claimed in any one of claims 1 to 9, wherein, The fan assembly comprises a volute and a fan wheel arranged in the volute, the volute has an air inlet and an air outlet, the water pump assembly comprises a pump shell and a pump wheel arranged in the pump shell, the pump shell has a water inlet and a water outlet, the volute and the pump shell are arranged on opposite sides of the driving device respectively, the driving device has a first output end and a second output end for torque output, the first output end is drivingly connected with the fan wheel, and the second output end is drivingly connected with the pump wheel.

11. The gas water heating apparatus as claimed in claim 10, wherein, The volute and the pump shell are arranged on opposite sides of the driving device along the axial direction of the fan wheel, the air inlet is arranged on the side of the volute away from the driving device, and the axial direction of the fan wheel is consistent with the width direction or the thickness direction of the main body.

12. Gas water heating apparatus as claimed in claim 10 or 11 wherein, The first output end and the second output end are configured to synchronously output torque, so that the fan wheel and the pump wheel rotate synchronously; or The first output end and the second output end are configured to independently output torque, so that the fan wheel and the pump wheel rotate independently.

13. The gas water heating apparatus of any one of claims 10 to 12 wherein, The driving device comprises a rotor, a stator and an output shaft, the rotor is sleeved on the periphery of the output shaft and drives the output shaft to rotate together, two ends of the output shaft form the first output end and the second output end respectively, the fan wheel and the pump wheel are connected to the two ends of the output shaft respectively, and the stator is sleeved on the periphery of the rotor and forms a magnetic circuit with the rotor to drive the rotor to rotate. Alternatively, the driving device comprises a stator, a first rotor and a second rotor, the first rotor is drivingly connected with the fan wheel as the first output end, the second rotor is drivingly connected with the pump wheel as the second output end, and the stator forms a magnetic circuit with the first rotor and the second rotor respectively to drive the first rotor and the second rotor to rotate respectively.

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