An assembling method of a zero-cold-water gas water heater

Abstract

The application relates to a zero-cold-water gas water heater assembly method, which comprises the following steps: respectively assembling a gas supply system, a waterway system and a combustion heat exchange system; assembling the assembled combustion heat exchange system on a bottom shell assembly; assembling the assembled gas supply system on the bottom shell assembly, and assembling the gas supply system and the combustion heat exchange system; and assembling the assembled waterway system on the bottom shell assembly, and assembling the waterway system and the combustion heat exchange system. The assembly method is characterized in that the gas supply system, the waterway system and the combustion heat exchange system are pre-assembled, and then the assembled combustion heat exchange system, the gas supply system and the waterway system are sequentially assembled at specified positions of the bottom shell assembly, so that the zero-cold-water gas water heater is simple and convenient to assemble, easy to implement, the efficiency of manual assembly is greatly improved, the failure rate of assembly is reduced, and the use experience of users is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of water heater technology, specifically relating to an assembly method for a zero-cold-water gas water heater. Background Technology

[0002] Currently, zero-cold-water gas water heaters do not produce cold water; instead, they preheat the cold water in the pipes, so a comfortable warm water flows out as soon as the tap is turned on—it's instant hot water, eliminating the need to wait for hot water each time. With increasing market demand for zero-cold-water gas water heaters, more and more users are choosing to purchase them to improve their quality of life and experience.

[0003] Existing zero-cold-water gas water heaters require a circulating water pump in the tank's water system to achieve the zero-cold-water function. This pump removes residual cold water from the heating pipes, preheats and circulates it, and then returns it to the outlets, ensuring hot water is available when the tap is turned on. To avoid taking up too much space in users' rooms, existing zero-cold-water gas water heaters maintain the same external dimensions as conventional gas water heaters, meaning the internal space of the tank is the same. Adding the circulating water pump and other components results in a more compact internal space for the zero-cold-water gas water heater, making assembly difficult, reducing production and installation efficiency, and significantly increasing the installation failure rate, leading to a poor user experience. Summary of the Invention

[0004] To address the above shortcomings, the technical problem to be solved by the present invention is to provide an assembly method for a zero-cold-water gas water heater, which makes the assembly of the zero-cold-water gas water heater simple and convenient, easy to implement, improves the efficiency of manual assembly, reduces the failure rate of assembly, and enhances the user experience.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] An assembly method for a zero-cold-water gas water heater, the zero-cold-water gas water heater comprising a gas supply system, a water circuit system, a combustion heat exchange system, a WIFI module, a main controller, a bottom shell assembly, and a front shell assembly, the method comprising the following steps:

[0007] Step S1: Assemble the gas supply system, the water system, and the combustion heat exchange system respectively;

[0008] Step S2: Assemble the assembled combustion heat exchange system onto the bottom shell assembly;

[0009] Step S3: Assemble the assembled gas supply system onto the bottom shell assembly, and assemble the gas supply system with the combustion heat exchange system;

[0010] Step S4: Assemble the assembled water system onto the bottom shell assembly, and assemble the water system with the combustion heat exchange system;

[0011] Step S5: Assemble the WIFI module and the main controller at the designated positions on the bottom shell assembly;

[0012] Step S6: Assemble the front shell assembly and the bottom shell assembly.

[0013] Furthermore, the combustion heat exchange system includes a fan, a heat exchanger, and a burner. Assembling the combustion heat exchange system includes:

[0014] The fan is installed at one end of the heat exchanger, and the burner is installed at the other end of the heat exchanger.

[0015] Furthermore, the heat exchanger is provided with a heating water pipe for conveying hot water, and the zero-cold-water gas water heater also includes a water outlet connector. Step S2 includes:

[0016] Step S2.1: Assemble the assembled fan, heat exchanger and burner at the designated positions on the bottom shell assembly;

[0017] Step S2.2: Fix the outlet end of the heating water pipe to the designated position on the bottom shell assembly;

[0018] Step S2.3: Assemble the water outlet connector onto the bottom shell assembly, so that the water outlet connector is connected to the water outlet end of the heating water pipe.

[0019] Furthermore, the gas supply system includes a gas proportional valve and a gas distributor. The gas proportional valve is used to adjust the amount of gas, and the gas distributor is used to control the amount of gas entering the burner. Assembling the gas supply system includes:

[0020] Assemble the gas proportional valve with the gas distributor.

[0021] Furthermore, the zero-cold-water gas water heater also includes a gas connector, and step S3 includes:

[0022] Step S3.1: Assemble the assembled gas proportional valve and gas distributor at the designated positions on the bottom shell assembly;

[0023] Step S3.2: Assemble the gas outlet of the gas distributor with the burner so that the gas outlet of the gas distributor is connected to the burner;

[0024] Step S3.3: Fix the gas inlet end of the gas proportional valve at the designated position on the bottom housing assembly.

[0025] Step S3.4: Assemble the gas connector onto the bottom shell assembly, so that the gas connector is connected to the gas inlet end of the gas proportional valve.

[0026] Furthermore, the water system includes a water pump and a water flow sensor. The water pump provides power for water circulation, and the water flow sensor detects the water flow rate. Assembling the water system includes:

[0027] The water pump is assembled with the water flow sensor.

[0028] Furthermore, the water system also includes connecting pipes, fasteners, and pins for assembling the water pump and the water flow sensor, including:

[0029] One end of the connecting pipe is snapped into the inlet of the water pump using the buckle, and the other end of the connecting pipe is fixedly connected to the outlet of the water flow sensor using the pin.

[0030] Furthermore, the water pump inlet end is provided with a first insertion groove and a first flange plate, and one end of the connecting pipe is provided with a first insertion part and a second flange plate. The connecting pipe is snapped into the water pump inlet end using the fastener, including:

[0031] Step S1.1: Insert the first connector into the first connector slot;

[0032] Step S1.2: The first flange plate and the second flange plate are snapped together using the fasteners to fix them in place.

[0033] Furthermore, one end of the connecting pipe is provided with a first limiting groove, and when the fastener engages the first flange plate and the second flange plate, the first limiting groove limits the fastener.

[0034] Furthermore, the other end of the connecting pipe is provided with a second insertion part, the second insertion part is provided with a second limiting groove, the water outlet end of the water flow sensor is provided with a second insertion groove and a first insertion hole, and the other end of the connecting pipe is fixedly connected to the water outlet end of the water flow sensor through the pin, including:

[0035] Step S1.1: Insert the second connector into the second connector slot;

[0036] Step S1.2: Insert the pin into the first insertion hole, so that the pin passes through the second limiting groove, and fix the second insertion part in the second insertion groove.

[0037] Furthermore, the water outlet end of the water flow sensor is provided with a hook plate. When the pin is inserted into the first insertion hole and passes through the second limiting groove, the hook plate limits the pin.

[0038] Furthermore, the zero-cold-water gas water heater also includes a water inlet connector, and step S4 includes:

[0039] Step S4.1: Assemble the assembled water pump and water flow sensor at the designated positions on the bottom housing assembly;

[0040] Step S4.2: Fix the outlet end of the water pump to the inlet end of the heating water pipe to connect the water pump and the heating water pipe.

[0041] Step S4.3: Fix the water inlet end of the water flow sensor at the designated position on the bottom shell assembly;

[0042] Step S4.4: Assemble the water inlet connector onto the bottom shell assembly, so that the water inlet connector is connected to the water inlet end of the water flow sensor.

[0043] Furthermore, the bottom of the water pump is provided with a shock-absorbing pad, and the assembled water pump and the water flow sensor are mounted at designated positions on the bottom housing assembly, including:

[0044] The shock-absorbing pad is fixedly connected to the bottom shell assembly.

[0045] Furthermore, the bottom shell assembly is provided with a second insertion hole, and step S5 includes:

[0046] Step S5.1: Connect the WIFI module to the second connector;

[0047] Step S5.2: Secure the WIFI module to the bottom shell assembly using screws.

[0048] The beneficial effects of this invention are as follows: The assembly method of this zero-cold-water gas water heater involves first pre-assembling the gas supply system, water system, and combustion heat exchange system. The gas supply components of the zero-cold-water gas water heater are assembled into a gas supply system, the cold water supply components are assembled into a water system, and the cold water heating components are assembled into a combustion heat exchange system. Then, the assembled combustion heat exchange system, gas supply system, and water system are sequentially assembled into the designated positions on the bottom shell assembly. This makes the assembly of the zero-cold-water gas water heater simple, convenient, and easy to implement, greatly improving the efficiency of manual assembly and reducing the assembly failure rate, thus greatly enhancing the user experience. Attached Figure Description

[0049] Figure 1 An exploded view of the assembly of a zero-cold-water gas water heater;

[0050] Figure 2 A schematic diagram of the uninstalled front casing assembly of a zero-cold-water gas water heater;

[0051] Figure 3 A schematic diagram of the structure of the mounting shell assembly for a zero-cold-water gas water heater;

[0052] Figure 4 A schematic diagram of the combustion heat exchange system for a zero-cold-water gas water heater;

[0053] Figure 5 A schematic diagram of the gas supply system for a zero-cold-water gas water heater;

[0054] Figure 6 Exploded view of the water system assembly for a zero-cold-water gas water heater;

[0055] Figure 7 A schematic diagram of the assembled water system of a zero-cold-water gas water heater;

[0056] Figure 8 A cross-sectional view of the assembled water system of a zero-cold-water gas water heater;

[0057] Figure 9 A cross-sectional view of the water pump of a zero-cold-water gas water heater assembled on the bottom casing assembly;

[0058] Figure 10 A schematic diagram of the water pump in a zero-cold-water gas water heater;

[0059] Figure 11 A schematic diagram of the connecting pipes for a zero-cold-water gas water heater;

[0060] Figure 12 A schematic diagram of the water flow sensor for a zero-cold-water gas water heater;

[0061] Figure 13A schematic diagram of the fasteners for a zero-cold-water gas water heater.

[0062] Reference numerals: 1. Bottom shell assembly; 11. Second insertion hole; 12. Screw; 2. Combustion heat exchange system; 21. Fan; 22. Heat exchanger; 23. Burner; 24. Hot water pipe; 3. Gas supply system; 31. Gas proportional valve; 32. Gas distributor; 4. Water system; 41. Water pump; 411. First insertion slot; 412. First flange plate; 413. Vibration damping pad; 4131. Through hole; 42. Connecting pipe; 421. First insertion part; 422. Second flange plate; 423. First limit 424. Second insertion part; 425. Second limiting groove; 43. Water flow sensor; 431. Second insertion groove; 432. First insertion hole; 433. Hook plate; 44. Fastener; 441. Fastener plate; 4411. Fastener hole; 4412. First semi-circular ring; 4413. Second semi-circular ring; 442. Connecting plate; 45. Pin; 46. Locking nut; 5. WIFI module; 6. Main controller; 7. Face shell assembly; 8. Water outlet connector; 9. Gas connector; 10. Water inlet connector. Detailed Implementation

[0063] The present invention will now be further described with reference to the accompanying drawings.

[0064] An assembly method for a zero-cold-water gas water heater, the zero-cold-water gas water heater comprising a gas supply system 3, a water circuit system 4, a combustion heat exchange system 2, a WIFI module 5, a main controller 6, a bottom shell assembly 1, and a front shell assembly 7, the method comprising the following steps:

[0065] Step S1: Assemble the gas supply system 3, water system 4, and combustion heat exchange system 2 respectively;

[0066] Step S2: Assemble the assembled combustion heat exchange system 2 onto the bottom shell assembly 1;

[0067] Step S3: Assemble the assembled gas supply system 3 onto the bottom shell assembly 1, and assemble the gas supply system 3 with the combustion heat exchange system 2;

[0068] Step S4: Assemble the assembled water system 4 onto the bottom shell assembly 1, and assemble the water system 4 with the combustion heat exchange system 2.

[0069] Step S5: Assemble the WIFI module 5 and the main controller 6 in the designated positions on the bottom shell assembly 1;

[0070] Step S6: Assemble the front shell assembly 7 and the bottom shell assembly 1.

[0071] In the implementation example of this method, the zero-cold-water gas water heater includes a gas supply system 3, a water system 4, a combustion heat exchange system 2, a WIFI module 5, a main controller 6, a bottom shell assembly 1, and a front shell assembly 7. (See reference...) Figure 1 The assembly method of this application is based on the assembly of these components. In this application, the gas supply accessories of the zero-cold-water gas water heater are assembled into a gas supply system 3, the cold water supply accessories are assembled into a water circuit system 4, and the cold water heating accessories are assembled into a combustion heat exchange system 2.

[0072] Water system 4 provides cold water to combustion heat exchange system 2, and gas supply system 3 provides gas to combustion heat exchange system 2. Combustion heat exchange system 2 generates high-temperature flue gas through gas combustion and transfers the heat of the high-temperature flue gas to the cold water, thus heating the cold water and finally outputting hot water, realizing the function of providing hot water in a zero-cold-water gas water heater. When the water heater is not in use, water system 4 extracts the residual cold water in the pipes and sends it to combustion heat exchange system 2 for preheating, so that hot water can be directly provided when the water heater is turned on, realizing the zero-cold-water function of a zero-cold-water gas water heater.

[0073] When assembling a zero-cold-water gas water heater, first assemble the combustion heat exchange system 2, gas supply system 3, and water system 4. Then, sequentially assemble these components into the designated positions on the bottom shell assembly 1. When the gas supply system 3 is assembled into the bottom shell assembly 1, it is connected to the combustion heat exchange system 2, enabling the gas supply system 3 to supply gas to the combustion heat exchange system 2. When the water system 4 is assembled into the bottom shell assembly 1, it is connected to the combustion heat exchange system 2, enabling the water system 4 to supply cold water to the combustion heat exchange system 2. (See reference...) Figure 2 .

[0074] After the combustion heat exchange system 2, gas supply system 3, and water system 4 are assembled in the bottom shell assembly 1, the WIFI module 5 and the main controller 6 are then assembled in the designated positions on the bottom shell assembly 1, and the WIFI module 5 is connected to the main controller 6. (See attached document.) Figure 2 The WIFI module 5 connects to the home's wireless router via WIFI, enabling the zero-cold-water gas water heater to wirelessly connect to the main controller 6. Users can then control the start and stop of the zero-cold-water gas water heater via a mobile app or other means.

[0075] Finally, the front shell assembly 7 and the bottom shell assembly 1 are fixedly connected with screws, so that the front shell assembly 7 seals the bottom shell assembly 1, forming a complete casing, thus completing the assembly of the zero-cold-water gas water heater. (See reference...) Figure 3In this application, the gas supply components are first assembled into a gas supply system 3, the cold water supply components are assembled into a water system 4, and the cold water heating components are assembled into a combustion heat exchange system 2. Then, the three modules of combustion heat exchange system 2, gas supply system 3, and water system 4 are assembled in the designated position of the bottom shell assembly 1.

[0076] Compared to existing technologies that separate and assemble multiple gas supply components, multiple cold water supply components, and cold water heating components into the bottom shell assembly 1, and then assemble the multiple components together in the bottom shell assembly 1, this assembly method makes the assembly of zero-cold-water gas water heater simple, convenient, and easy to implement, greatly improving the efficiency of manual assembly and reducing the assembly failure rate, thus greatly enhancing the user experience.

[0077] In this implementation example, the combustion heat exchange system 2 includes a fan 21, a heat exchanger 22, and a burner 23. During assembly of the combustion heat exchange system 2, the fan 21 is fixedly installed at the top of the heat exchanger 22 using a top-mounted exhaust method, and the burner 23 is fixedly installed at the bottom of the heat exchanger 22. (See reference...) Figure 4 .

[0078] The gas supply system 3 delivers gas to the burner 23. The fan 21 generates negative pressure at the top of the heat exchanger 22, drawing outside air into the burner 23 to provide oxygen for combustion and expelling waste gas generated during combustion. After combustion in the burner 23, high-temperature flue gas is produced. Driven by the fan 21, this high-temperature flue gas is transported from the burner 23 to the heat exchanger 22, where it transfers heat from the flue gas to cold water, thus heating the water.

[0079] In this implementation example, a heating water pipe 24 is provided on the outside of the heat exchanger 22, and the zero-cold-water gas water heater also includes a water outlet connector 8, see reference. Figure 2 and Figure 4 When assembling the combustion heat exchange system 2 on the bottom shell assembly 1, first assemble the assembled fan 21, heat exchanger 22 and burner 23 in the designated position of the bottom shell assembly 1, then fix the outlet end of the heating water pipe 24 in the designated position of the bottom shell assembly 1, and then fix the outlet connector 8 in the designated position of the bottom shell assembly 1 so that the outlet connector 8 is connected to the outlet end of the heating water pipe 24.

[0080] The heating water pipe 24 is spirally wound around the outer wall of the heat exchanger 22. When high-temperature flue gas is delivered into the heat exchanger 22, the heat from the flue gas is transferred to the heating water pipe 24 through the side wall of the heat exchanger 22, thereby heating the cold water in the heating water pipe 24. The heated hot water in the heating water pipe 24 is delivered from the outlet end of the heating water pipe 24 to the outlet connector 8, and then output from the outlet connector 8. The hot water is then delivered to the point of use where hot water is needed through the hot water pipeline connected to the outlet connector 8.

[0081] In this implementation example, the gas supply system 3 includes a gas proportional valve 31 and a gas distributor 32, see reference. Figure 5 When assembling the gas supply system 3, the gas proportional valve 31 and the gas distributor 32 are assembled together. The zero-cold-water gas water heater also includes a gas connector 9. When assembling the gas supply system 3 in the bottom shell assembly 1, first, the assembled gas proportional valve 31 and gas distributor 32 are assembled in the designated positions on the bottom shell assembly 1. Then, the gas outlet end of the gas distributor 32 is assembled with the burner 23, connecting the gas outlet end of the gas distributor 32 to the burner 23. Next, the gas inlet end of the gas proportional valve 31 is fixed in the designated position on the bottom shell assembly 1. Finally, the gas connector 9 is assembled in the designated position on the bottom shell assembly 1, connecting the gas connector 9 to the gas inlet end of the gas proportional valve 31. (See reference...) Figure 2 .

[0082] An external gas pipeline delivers gas to a gas proportional valve 31 via a gas connector 9. The gas proportional valve 31 regulates the amount of gas supplied and then delivers the regulated gas to a gas distributor 32. The gas in the gas distributor 32 is then delivered to the burner 23. Because the gas distributor 32 can control the amount of gas entering the burner 23, it can rationally distribute the gas, ensuring complete combustion in the burner 23, reducing gas consumption, and thus saving users' operating costs.

[0083] In this implementation example, the water system 4 includes a water pump 41 and a water flow sensor 43, see reference. Figure 7 When assembling the water system 4, the water pump 41 and the water flow sensor 43 are assembled. The zero-cold-water gas water heater also includes an inlet connector 10. When assembling the water system 4 onto the bottom shell assembly 1, the assembled water pump 41 and water flow sensor 43 are first assembled in the designated positions on the bottom shell assembly 1. Then, the outlet end of the water pump 41 is fixedly connected to the inlet end of the heating water pipe 24, connecting the water pump 41 to the heating water pipe 24. Next, the inlet end of the water flow sensor 43 is fixed in the designated position on the bottom shell assembly 1. Finally, the inlet connector 10 is assembled in the designated position on the bottom shell assembly 1, connecting the inlet connector 10 to the water flow sensor 43. (See reference...) Figure 2 .

[0084] Cold water from the outside enters the water flow sensor 43 through the water inlet connector 10, and is then pumped to the heating water pipe 24 by the water pump 41. When the cold water in the heating water pipe 24 passes through the outer wall of the heat exchanger 22, it is heated by the heat transferred from the high temperature flue gas in the heat exchanger 22, thereby causing the heating water pipe 24 to output hot water.

[0085] When water flows through the water flow sensor 43, the water flow sensor 43 detects the water flow rate and sends an electrical signal to the main controller 6. The main controller 6 controls the start and stop of the water pump 41, thereby controlling the amount of cold water delivered to the heating water pipe 24. This prevents too much cold water from entering the heating water pipe 24, which would cause the heating speed of the combustion heat exchange system 2 to be unable to keep up with the delivery speed of the cold water, resulting in insufficient hot water temperature output from the heating water pipe 24 and affecting the user experience.

[0086] Pump 41 provides power for the flow of water in the water system 4. In actual use, pump 41 draws cold water from the outside into the heating water pipe 24 and drives the cold water to flow in the heating water pipe 24. When the cold water passes through the outer wall of the heat exchanger 22, it is heated by the heat transferred from the high-temperature flue gas in the heat exchanger 22. Driven by pump 41, hot water is output from the outlet end of the heating water pipe 24 and transported to the water point that needs hot water through the hot water pipe connected by the outlet connector 8, realizing the function of this zero-cold-water gas water heater in providing hot water.

[0087] When the water heater is not in use, the water pump 41 extracts the residual cold water in the hot water pipe and sends it back to the heating water pipe 24. The residual cold water is preheated through the heat exchanger 22. When the water heater is turned on, the water pump 41 drives the preheated hot water in the heating water pipe 24 to be delivered to the water point that needs hot water through the hot water pipe, thereby realizing the zero cold water function of this zero cold water gas water heater.

[0088] In this implementation example, the water system 4 also includes a connecting pipe 42, a fastener 44, and a pin 45, see reference. Figure 6 and Figure 7 When assembling the water inlet system 4, one end of the connecting pipe 42 is first snapped into the inlet of the water pump 41 using the snap fastener 44, and then the other end of the connecting pipe 42 is fixedly connected to the outlet of the water flow sensor 43 using the pin 45. By using the snap fastener 44 to fix the inlet of the water pump 41 to one end of the connecting pipe 42, and then using the pin 45 to fix the outlet of the water flow sensor 43 to the other end of the connecting pipe 42, the assembly of the water system 4 is convenient, quick, and labor-saving, thus making the assembly of this zero-cold-water gas water heater simple, convenient, and easy to implement.

[0089] Furthermore, the water pump 41 has a first insertion groove 411 and a first flange plate 412 at its inlet end, and the connecting pipe 42 has a first insertion part 421 and a second flange plate 422 at one end. (See reference) Figure 8 , Figure 10 and Figure 11 When fixing the water inlet end of the water pump 41 to one end of the connecting pipe 42, first insert the first insertion part 421 of one end of the connecting pipe 42 into the first insertion groove 411 of the water inlet end of the water pump 41, and then use the fastener 44 to fasten the first flange plate 412 of the water inlet end of the water pump 41 and the second flange plate 422 of one end of the connecting pipe 42 together.

[0090] Since the first insertion slot 411 can also partially limit the first insertion part 421, the connection between the water pump 41 and the connecting pipe 42 is more stable and reliable, enhancing the structural stability of the water system 4, thereby reducing the failure rate of this zero-cold-water gas water heater assembly and improving the user experience.

[0091] In this implementation example, the fastener 44 is an elastic element. The fastener 44 includes two snap-fit ​​plates 441 on both sides and a connecting plate 442 connecting the two snap-fit ​​plates 441. The snap-fit ​​plates 441 are provided with snap-fit ​​holes 4411 for limiting the first flange plate 412 and the second flange plate 422. (See reference...) Figure 7 and Figure 13 When connecting the water pump 41 to the connecting pipe 42, a force is applied to the two snap-fit ​​plates 441, causing them to open to the outside of the first flange plate 412 and the second flange plate 422. Then, the two snap-fit ​​plates 441 are released, allowing them to close under their own elasticity. This allows the sides of the first flange plate 412 and the second flange plate 422 to be inserted into the snap-fit ​​holes 4411 of the two snap-fit ​​plates 441, thus achieving the snap-fit ​​connection between the water pump 41 inlet end and one end of the connecting pipe 42 by the snap-fit ​​member 44. In this application, the snap-fit ​​member 44 can be made entirely of a material with elastic deformation capabilities, such as plastic.

[0092] Furthermore, the snap-fit ​​plate 441 has a first semicircular ring 4412 at one end and a second semicircular ring 4413 at the other end, and the connecting pipe 42 has a first limiting groove 423 at one end. (See reference) Figure 7 , Figure 11 and Figure 13When the fastener 44 engages with the first flange plate 412 and the second flange plate 422, the first semicircular rings 4412 of the two fastening plates 441 surround the outside of the water inlet end of the water pump 41, and the second semicircular rings 4413 of the two fastening plates 441 surround the outside of the first limiting groove 423. By limiting the second semicircular rings 4413 of the two fastening plates 441 through the first limiting groove 423, it is possible to prevent the fastener 44 from falling off when it is engaged with the water inlet end of the water pump 41 and one end of the connecting pipe 42, thereby further reducing the failure rate of this zero-cold-water gas water heater assembly and improving the user experience.

[0093] In this implementation example, the other end of the connecting pipe 42 is provided with a second insertion part 424, and the second insertion part 424 is provided with a second limiting groove 425. The water outlet end of the water flow sensor 43 is provided with a second insertion groove 431 and a first insertion hole 432. (See reference...) Figure 6 , Figure 8 , Figure 11 and Figure 12 When fixing the outlet end of the water flow sensor 43 to the other end of the connecting pipe 42, first insert the second insertion part 424 of the other end of the connecting pipe 42 into the second insertion groove 431 of the outlet end of the water flow sensor 43, and then extend one end of the pin 45 from the outside through the first insertion hole 432 into the second insertion groove 431, and pass through the second limiting groove 425.

[0094] By engaging the pin 45 with the second limiting groove 425, the second insertion part 424 is prevented from moving outward in the second insertion groove 431, thereby fixing the second insertion part 424 in the second insertion groove 431, realizing the fixed connection between the water flow sensor 43 and the connecting pipe 42, making the assembly of the water system 4 convenient and quick, saving time and effort, and making the assembly of this zero cold water gas water heater simple, convenient and easy to implement.

[0095] Furthermore, the outlet end of the water flow sensor 43 is provided with a hook plate 433, which is an elastic element, see reference. Figure 6 , Figure 7 and Figure 12 When the pin 45 is inserted into the first insertion hole 432, a force is applied to the hook plate 433, causing the hook plate 433 to bend away from the pin 45, thus avoiding the movement path of the pin 45. After the pin 45 is inserted into the first insertion hole 432, the force applied to the hook plate 433 is removed, and the hook plate 433 returns to its original shape under its own elasticity. At this time, the hook plate 433 abuts against the pin 45, limiting the pin 45 and preventing it from falling off during actual use, thereby reducing the failure rate of this zero-cold-water gas water heater assembly and improving the user experience.

[0096] In this implementation example, the water pump 41 is equipped with a shock-absorbing pad 413 at its bottom, see reference. Figure 9 When assembling the water system 4 onto the base assembly 1, the water pump 41 is fixed to the base assembly 1 by fixing the shock-absorbing pad 413 to the base assembly 1. Since the shock-absorbing pad 413 has elastic buffering capacity between the water pump 41 and the base assembly 1, it can effectively prevent noise and vibration generated by the water pump 41 during operation from being transmitted to the base assembly 1, thus improving the user experience. It is foreseeable that in this application, the shock-absorbing pad 413 can be made of materials with elastic deformation capabilities, such as rubber.

[0097] Furthermore, the water system 4 also includes a locking nut 46, a shock-absorbing pad 413 with an axially oriented through hole 4131 penetrating the shock-absorbing pad 413, and a screw 12 on the bottom housing assembly 1. When fixing the water pump 41 onto the bottom housing assembly 1, the screw 12 is first made to pass through the through hole 4131 on the shock-absorbing pad 413, and then the locking nut 46 is screwed to one end of the screw 12 that passes through the through hole 4131, thereby fixing the shock-absorbing pad 413 to the bottom housing assembly 1, realizing the fixed installation of the water pump 41 on the bottom housing assembly 1. (See reference...) Figure 9 .

[0098] The bottom shell assembly 1 is provided with an upwardly extending screw 12. When installing the water pump 41 on the bottom shell assembly 1, the screw 12 is fitted through the through hole 4131 on the shock-absorbing pad 413, so that the screw 12 passes through the through hole 4131. Then, the locking nut 46 is screwed to the end of the screw 12 that passes through the through hole 4131, pressing the shock-absorbing pad 413 onto the bottom shell assembly 1. This makes the installation of the water pump 41 on the bottom shell assembly 1 convenient and quick, and makes the assembly of this zero-cold-water gas water heater simple, convenient and easy to implement.

[0099] In this implementation example, the bottom shell assembly 1 is provided with a second insertion hole 11, see reference. Figure 1 When assembling the WIFI module 5 at the designated position on the bottom housing assembly 1, first insert the WIFI module 5 into the second insertion hole 11, and then fix the WIFI module 5 to the bottom housing assembly 1 with screws. (See [reference needed]). Figure 2 The reason for this design is twofold. Firstly, the second insertion hole 11 can guide the installation position of the WIFI module 5 on the bottom shell assembly 1, making the installation of the WIFI module 5 on the bottom shell assembly 1 simpler and more convenient. This makes the assembly of this zero-cold-water gas water heater simple, convenient, and easy to implement, improving the efficiency of manual assembly.

[0100] On the other hand, the second insertion hole 11 limits the WIFI module 5, making the installation of the WIFI module 5 on the bottom shell assembly 1 more stable, thereby further reducing the failure rate of this zero-cold-water gas water heater assembly and improving the user experience.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for assembling a zero-cold-water gas water heater, characterized in that, The zero-cold-water gas water heater includes a gas supply system (3), a water system (4), a combustion heat exchange system (2), a WIFI module (5), a main controller (6), a bottom shell assembly (1), and a front shell assembly (7). The method includes the following steps. Step S1: Assemble the gas supply system (3), the water system (4), and the combustion heat exchange system (2) respectively; The water system (4) includes a water pump (41) and a water flow sensor (43). The water pump (41) provides power for water circulation, and the water flow sensor (43) detects the water flow rate. Assembling the water system (4) includes: Assemble the water pump (41) and the water flow sensor (43); The water system (4) also includes a connecting pipe (42), a fastener (44), and a pin (45) for assembling the water pump (41) and the water flow sensor (43), including: One end of the connecting pipe (42) is connected to the water inlet of the water pump (41) by the buckle (44), and the other end of the connecting pipe (42) is fixedly connected to the water outlet of the water flow sensor (43) by the pin (45). The other end of the connecting pipe (42) is provided with a second insertion part (424), and the second insertion part (424) is provided with a second limiting groove (425). The water outlet end of the water flow sensor (43) is provided with a second insertion groove (431) and a first insertion hole (432). The other end of the connecting pipe (42) is fixedly connected to the water outlet end of the water flow sensor (43) through the pin (45), including: Step S1.1: Insert the second plug part (424) into the second plug slot (431). Step S1.2: Insert the pin (45) into the first insertion hole (432) so that the pin (45) passes through the second limiting groove (425) and fix the second insertion part (424) in the second insertion groove (431); The water flow sensor (43) has a hook plate (433) at its outlet end. When the pin (45) is inserted into the first insertion hole (432) and passes through the second limiting groove (425), the hook plate (433) limits the pin (45). Step S2: Assemble the assembled combustion heat exchange system (2) onto the bottom shell assembly (1); The combustion heat exchange system (2) includes a fan (21), a heat exchanger (22), and a burner (23). Assembling the combustion heat exchange system (2) includes: The fan (21) is installed at one end of the heat exchanger (22), the burner (23) is installed at the other end of the heat exchanger (22), the fan (21) is fixedly installed at the top of the heat exchanger (22) by means of top-mounted exhaust, and the burner (23) is fixedly installed at the bottom of the heat exchanger (22). The heat exchanger (22) is provided with a heating water pipe (24) for conveying hot water on the outside. The heating water pipe (24) is spirally wound around the outer wall of the heat exchanger (22) from top to bottom. Step S3: Assemble the assembled gas supply system (3) onto the bottom shell assembly (1), and assemble the gas supply system (3) with the combustion heat exchange system (2); Step S4: Assemble the assembled water system (4) onto the bottom shell assembly (1), and assemble the water system (4) with the combustion heat exchange system (2); Step S5: Assemble the WIFI module (5) and the main controller (6) at the designated position of the bottom shell assembly (1), and in the bottom shell assembly (1), the main controller (6) is located on the side closer to the combustion heat exchange system (2), and the WIFI module (5) is located on the side away from the combustion heat exchange system (2); Step S6: Assemble the front shell assembly (7) and the bottom shell assembly (1).

2. The assembly method of a zero-cold-water gas water heater according to claim 1, characterized in that, The zero-cold-water gas water heater also includes a water outlet connector (8), and step S2 includes: Step S2.1: Assemble the assembled fan (21), heat exchanger (22) and burner (23) at the designated positions on the bottom shell assembly (1); Step S2.2: Fix the outlet end of the heating water pipe (24) at the designated position on the bottom shell assembly (1); Step S2.3: Assemble the water outlet connector (8) on the bottom shell assembly (1) so that the water outlet connector (8) is connected to the water outlet end of the heating water pipe (24).

3. The assembly method of a zero-cold-water gas water heater according to claim 1, characterized in that, The gas supply system (3) includes a gas proportional valve (31) and a gas distributor (32). The gas proportional valve (31) is used to adjust the amount of gas, and the gas distributor (32) is used to control the amount of gas entering the burner (23). Assembling the gas supply system (3) includes: Assemble the gas proportional valve (31) with the gas distributor (32).

4. The assembly method of a zero-cold-water gas water heater according to claim 3, characterized in that, The zero-cold-water gas water heater also includes a gas connector (9), and step S3 includes: Step S3.1: Assemble the assembled gas proportional valve (31) and gas distributor (32) at the designated positions on the bottom shell assembly (1); Step S3.2: Assemble the gas outlet of the gas distributor (32) with the burner (23) so that the gas outlet of the gas distributor (32) is connected to the burner (23); Step S3.3: Fix the inlet end of the gas proportional valve (31) to the designated position on the bottom shell assembly (1). Step S3.4: Assemble the gas connector (9) on the bottom shell assembly (1) so that the gas connector (9) is connected to the gas inlet end of the gas proportional valve (31).

5. The assembly method of a zero-cold-water gas water heater according to claim 1, characterized in that, The water pump (41) has a first insertion groove (411) and a first flange plate (412) at its inlet end. One end of the connecting pipe (42) has a first insertion part (421) and a second flange plate (422). The connecting pipe (42) is snapped into place with the water pump (41) by the fastener (44), including: Step S1.1: Insert the first plug-in part (421) into the first plug-in slot (411). Step S1.2: The first flange plate (412) and the second flange plate (422) are snapped together by the fastener (44) to fix the first flange plate (412) and the second flange plate (422) in place.

6. The assembly method of a zero-cold-water gas water heater according to claim 5, characterized in that, One end of the connecting pipe (42) is provided with a first limiting groove (423). When the fastener (44) engages the first flange plate (412) and the second flange plate (422), the first limiting groove (423) limits the fastener (44).

7. The assembly method of a zero-cold-water gas water heater according to claim 1, characterized in that, The zero-cold-water gas water heater also includes a water inlet connector (10), and step S4 includes: Step S4.1: Assemble the assembled water pump (41) and the water flow sensor (43) at the designated positions on the bottom shell assembly (1); Step S4.2: Fix the outlet end of the water pump (41) to the inlet end of the heating water pipe (24) so ​​that the water pump (41) and the heating water pipe (24) are connected. Step S4.3: Fix the water inlet end of the water flow sensor (43) at the designated position on the bottom shell assembly (1); Step S4.4: Assemble the water inlet connector (10) on the bottom shell assembly (1) so that the water inlet connector (10) is connected to the water inlet end of the water flow sensor (43).

8. The assembly method of a zero-cold-water gas water heater according to claim 7, characterized in that, The water pump (41) is provided with a shock-absorbing pad (413) at its bottom. The assembled water pump (41) and the water flow sensor (43) are then mounted at a designated position on the bottom shell assembly (1), including: The shock-absorbing pad (413) is fixedly connected to the bottom shell assembly (1).

9. The assembly method of a zero-cold-water gas water heater according to claim 1, characterized in that, The bottom shell assembly (1) is provided with a second insertion hole (11), and step S5 includes: Step S5.1: Insert the WIFI module (5) into the second plug hole (11); Step S5.2: Secure the WIFI module (5) to the bottom shell assembly (1) with screws.

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