Waterway integration module and gas water heating equipment

Abstract

The utility model relates to the technical field of gas water heating equipment, and discloses a waterway integration module and gas water heating equipment, which comprises a plate heat exchanger, a waterway adapter and a first circulating water pump, the plate heat exchanger comprises a bathroom water channel; the waterway adapter is provided with a first water pump connector, and an opening of the first water pump connector is arranged in the length direction of the plate heat exchanger. The first circulating water pump is connected with the waterway adapter through the first water pump connector, and a connector of the first circulating water pump and the first water pump connector are oppositely arranged side by side and communicated with the bathroom water channel. The second circulating water pump and the first circulating water pump can be installed on the side edge or the rear edge of the plate heat exchanger, the space layout of the waterway integration module is optimized, and therefore the thickness size of the gas water heating device is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of gas-fired water heating equipment, and in particular to a water circuit integrated module and a gas-fired water heating equipment. Background Technology

[0002] Currently, gas-fired water heating equipment, such as wall-hung boilers, includes both heating and bathroom functions. The bathroom function is usually achieved by installing a plate heat exchanger to heat the bathroom water. The plate heat exchanger integrates components such as water pumps and valve bodies to form a water circuit integrated module. Therefore, the water circuit integrated module is large in size and complex in structure. Especially for wall-hung boilers with rich functions, the water circuit integrated module is even more complicated. The unreasonable spatial layout of the components in the water circuit integrated module leads to an increase in the overall thickness of the wall-hung boiler, which is also not conducive to installation and subsequent maintenance. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a water circuit integration module, which effectively solves the problem of excessive overall size caused by unreasonable spatial layout of the water circuit integration module of gas water heater.

[0004] The above-mentioned technical problems are solved by the following technical solutions:

[0005] A water circuit integrated module for gas-fired water heating equipment, comprising:

[0006] Plate heat exchanger, water circuit adapter and first circulating water pump;

[0007] The plate heat exchanger includes a bathroom water channel; the water adapter is provided with a first water pump connection port, the opening of the first water pump connection port is oriented along the length direction of the plate heat exchanger; the first circulating water pump is connected to the water adapter through the first water pump connection port, the connection port of the first circulating water pump is arranged side by side with the first water pump connection port and communicates with the bathroom water channel.

[0008] Beneficial effects: The plate heat exchanger has an internal bathroom water channel for supplying and circulating hot water for the bathroom. The water circuit adapter has a first water pump connection port, with its opening facing along the length of the plate heat exchanger. The first circulating water pump connects to the water circuit adapter through the first water pump connection port, and the first circulating water pump connection ports are arranged side-by-side opposite each other, then connected to the bathroom water channel. This allows the first circulating water pump and the water circuit adapter to be installed side-by-side along the length of the plate heat exchanger on its side or rear, fully utilizing the space along the length of the plate heat exchanger, thereby reducing the overall thickness of the water circuit integrated module and optimizing the spatial layout of the water circuit integrated module in the gas-fired water heating equipment, thus reducing the overall thickness of the gas-fired water heating equipment.

[0009] In one embodiment, a second circulating water pump is also included; the plate heat exchanger further includes a heating water channel; the water circuit adapter is also provided with a second water pump connection port, the opening of the second water pump connection port being oriented along the length direction of the plate heat exchanger; the second circulating water pump is connected to the water circuit adapter through the second water pump connection port, the connection port of the second circulating water pump is arranged side by side with the second water pump connection port and is connected to the heating water channel.

[0010] Beneficial effects: The water circuit adapter is equipped with a second water pump connection port, with the opening of the second water pump connection port facing along the length of the plate heat exchanger. The second circulating water pump connects to the water circuit adapter through the second water pump connection port, and the second circulating water pump connection ports are arranged side-by-side with the second water pump connection port, then connected to the heating water channel, ensuring that hot water can smoothly enter the heating water channel from the second circulating water pump to participate in the heating circulation. Furthermore, arranging the second circulating water pump connection port side-by-side with the second water pump connection port allows the second circulating water pump to be installed on the side or rear of the plate heat exchanger along its length, thereby optimizing the spatial layout of the water circuit integration module in the gas-fired water heater, reducing the thickness of the water circuit integration module in the width direction, and thus reducing the overall thickness of the gas-fired water heater. Simultaneously setting up heating water channels and bathroom water channels in the plate heat exchanger allows the gas-fired water heater to have both heating and bathroom functions, improving its practicality.

[0011] In one embodiment, the water circuit adapter includes a first water circuit adapter and a second water circuit adapter. Along the length of the plate heat exchanger, the first water circuit adapter and the second water circuit adapter are respectively disposed on the left and right sides of the plate heat exchanger. The first water circuit adapter is provided with a bathroom water inlet and a heating water return outlet, and the second water circuit adapter is provided with a bathroom water outlet and a heating water inlet. The bathroom water inlet is connected to the bathroom water outlet through the bathroom water channel, and the heating water inlet is connected to the heating water return outlet through the heating water channel.

[0012] Beneficial effects: The water circuit adapter consists of a first water circuit adapter and a second water circuit adapter, located on the left and right sides of the plate heat exchanger, respectively. The first water circuit adapter has a bathroom inlet and a heating return outlet, while the second water circuit adapter has a bathroom outlet and a heating inlet. Cold water entering from the cold water inlet first flows through the bathroom inlet of the first water circuit adapter into the bathroom water channel of the plate heat exchanger. After heat exchange in the bathroom water channel, it flows out from the bathroom outlet to be supplied to the user. Similarly, high-temperature hot water for heating enters the heating water channel of the plate heat exchanger from the heating inlet. After heating circulation and heat exchange with the cold water in the bathroom, the cooled water returns to the first water circuit adapter through the heating return outlet.

[0013] In one embodiment, the first water circuit adapter is provided with a second water pump connection port and a first water pump connection port; or, the second water circuit adapter is provided with a second water pump connection port and a first water pump connection port; or, the first water circuit adapter is provided with a second water pump connection port and the second water circuit adapter is provided with a first water pump connection port; or, the first water circuit adapter is provided with a first water pump connection port and the second water circuit adapter is provided with a second water pump connection port.

[0014] Beneficial Effects: The second and first water pump connection ports can be configured in various ways. Both the second and first water pump connection ports can be located on the first water circuit adapter; alternatively, both can be located on the second water circuit adapter, allowing both the second and first circulating water pumps to be connected to either side of the first water circuit adapter, facilitating centralized management and wiring. Furthermore, the second and first water pump connection ports can be located on both sides of the first and second water circuit adapter; or, the first and second water circuit adapters can be configured with either the first and second water circuit adapters. This allows for a more even distribution of the second and first circulating water pumps within the integrated water circuit module, optimizing its overall layout.

[0015] In one embodiment, the center of the bathroom water inlet is at the same height as the center of the heating water inlet, and the center of the heating water return outlet is at the same height as the center of the bathroom water outlet.

[0016] Beneficial effects: By setting the center of the bathroom water inlet and the center of the heating water inlet at the same height, and the center of the heating water return outlet and the center of the bathroom water outlet at the same height, the planning of the heating and bathroom water channels is facilitated, improving the integration of the water circuit module and simplifying later maintenance. Furthermore, because the bathroom water inlet and the heating water inlet are at the same height, hot and cold water can be distributed and flow more evenly in the plate heat exchanger, thereby improving heat exchange efficiency.

[0017] In one embodiment, a stepper motor and a three-way valve are also included; the second water circuit adapter is provided with a three-way valve connection port, the opening of the three-way valve connection port is oriented along the length direction of the plate heat exchanger; the outlet of the three-way valve is arranged side by side with the three-way valve connection port and is connected to the heating water channel; the stepper motor is connected to the valve core of the three-way valve and is used to control the flow rate of hot water entering the heating water channel.

[0018] Beneficial effects: By setting a three-way valve connection port on the second water circuit adapter, and aligning the opening of the three-way valve connection port along the length of the plate heat exchanger, the three-way valve can be integrated into the side of the plate heat exchanger, making full use of the space along the length of the plate heat exchanger. This reduces the overall thickness of the water circuit integration module, optimizes the spatial layout of the water circuit integration module in the gas-fired water heating equipment, and thus reduces the overall thickness of the gas-fired water heating equipment. By arranging the outlet of the three-way valve and the three-way valve connection port side by side and connecting them to the heating water channel, the three-way valve can distribute and regulate the flow of hot water entering the heating water channel. Furthermore, by connecting a stepper motor to the valve core of the three-way valve, the stepper motor drives the rotation of the valve core to flexibly adjust the flow of hot water in the heating water channel according to actual needs, ensuring that the heating system can operate efficiently and stably, and also achieving a good balance between heating water and bathroom water, avoiding various problems caused by unreasonable hot water distribution.

[0019] In one embodiment, the system further includes an inlet water temperature sensor and an outlet water temperature sensor; the inlet water temperature sensor is disposed on the first water circuit adapter and at the heating return water inlet; the outlet water temperature sensor is disposed on the second water circuit adapter and at the bathroom outlet.

[0020] Beneficial Effects: By placing the inlet water temperature sensor at the heating return port on the first water circuit connector, the temperature of the water returning from the heating water channel can be directly measured. During the heating cycle, the water temperature changes as the hot water releases heat. By measuring the water temperature at the heating return port, the gas water heater can accurately understand the remaining heat of the hot water after one heating cycle. Placing the outlet water temperature sensor at the bathroom outlet on the second water circuit connector allows for real-time monitoring of the hot water temperature supplied to the user. The data detected by the inlet and outlet water temperature sensors enables the gas water heater's control system to make intelligent adjustments, thereby improving the user experience.

[0021] In one embodiment, a solenoid valve and a manual water supply valve are also included, both of which are mounted on the second water circuit adapter.

[0022] Beneficial effects: During the operation of the gas-fired water heater, a pressure sensor detects the water pressure in the heating water channel. When the water pressure in the heating water channel is too low, the main controller sends a signal to activate the solenoid valve, thereby replenishing the heating water channel with water. In the event of a solenoid valve failure, the heating water channel can be replenished manually by opening the manual water supply valve, preventing the inability to replenish the heating water channel due to solenoid valve failure.

[0023] On the other hand, this utility model also provides a gas-fired water heating device, comprising:

[0024] case;

[0025] The expansion tank, fan, burner, secondary condenser heat exchanger, and the water circuit integrated module as described above are all housed within the casing.

[0026] The water circuit integration module, the burner, and the fan are arranged sequentially from bottom to top along the height direction of the housing;

[0027] The expansion tank and the stepper motor are located on the same side of the housing, with the expansion tank located above the stepper motor; the secondary condensing heat exchanger is disposed between the expansion tank and the fan; the plate heat exchanger is located near the front sidewall of the housing.

[0028] Beneficial effects: By placing the water circuit integration module at the bottom of the gas-fired water heater, and arranging the burner and fan sequentially from bottom to top along the height of the casing, with the fan close to the inner wall of the casing, and placing the expansion tank and the stepper motor in the water circuit integration module on the same side of the casing, with the expansion tank positioned above the stepper motor, and a two-stage condensing heat exchanger installed between the expansion tank and the fan, the spatial layout of each component within the casing is more rational, effectively improving the space utilization rate and facilitating a reduction in the overall size of the gas-fired water heater. Furthermore, placing the plate heat exchanger close to the front wall of the casing makes it easier to operate during maintenance and repair of the gas-fired water heater, reducing interference from maintenance personnel with other internal components and eliminating the need for extensive disassembly of other parts, thus improving maintenance convenience. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a gas-fired water heater according to an embodiment of the present utility model;

[0031] Figure 2 This is a three-dimensional structural diagram of a waterway integrated module according to an embodiment of the present utility model;

[0032] Figure 3 for Figure 2 The image shows a front view of a waterway integrated module;

[0033] Figure 4 for Figure 2 A top view of a waterway integrated module is shown.

[0034] Figure 5 for Figure 2 A left view of a waterway integrated module is shown.

[0035] Figure 6 for Figure 2 The image shows a rear view of a waterway integrated module.

[0036] Figure 7 for Figure 2 The image shows a front view of a water circuit integrated module after removing the plate heat exchanger and the second circulating water pump.

[0037] Figure 8 for Figure 2 An exploded view of a waterway integrated module is shown.

[0038] Figure 9 for Figure 2 Another exploded view of a waterway integrated module is shown;

[0039] Figure 10 This is a schematic diagram of the principle of a gas-fired water heater according to an embodiment of the present utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Housing; 10. Water circuit integrated module; 11. Second circulating water pump; 111. Air vent valve; 112. Pressure sensor; 113. Water flow sensor; 114. Pressure relief pipe; 115. Pressure relief valve; 12. First circulating water pump; 13. Stepper motor; 14. Plate heat exchanger; 15. First water circuit adapter; 151. Inlet water temperature sensor; 152. Heating return water inlet; 153. Bathroom inlet; 154. Second 155. Water pump connection port; 16. First water pump connection port; 16. Second water circuit adapter; 161. Three-way valve connection port; 162. Heating water inlet; 163. Bathroom water outlet; 164. Outlet water temperature sensor; 165. Heating water outlet; 166. Cold water inlet; 17. Solenoid valve; 18. Manual water supply valve; 19. Three-way valve; 20. Burner; 30. Fan; 40. Expansion tank; 50. Secondary condensing heat exchanger. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] According to embodiments of the present invention, such as Figures 2 to 10 As shown, on one hand, a water circuit integrated module 10 is provided for a gas-fired water heating device, including: a plate heat exchanger 14, a water circuit adapter, and a first circulating water pump 12; the plate heat exchanger 14 includes a bathroom water channel; the water circuit adapter is provided with a first water pump connection port 155, the opening of the first water pump connection port 155 is oriented along the length direction of the plate heat exchanger 14; the first circulating water pump 12 is connected to the water circuit adapter through the first water pump connection port 155, and the connection port of the first circulating water pump 12 is arranged side by side with the first water pump connection port 155 and communicates with the bathroom water channel.

[0045] In this embodiment, a water circuit integration module 10 for a gas-fired water heating device is constructed by integrating a water circuit adapter and a first circulating water pump 12 onto a plate heat exchanger 14. The plate heat exchanger 14 has a bathroom water channel for supplying and circulating hot water for the bathroom. The water circuit adapter has a first water pump connection port 155, with the opening of the first water pump connection port 155 facing along the length of the plate heat exchanger. The first circulating water pump 12 is connected to the water circuit adapter through the first water pump connection port 155, and the connection port of the first circulating water pump 12 is arranged side-by-side with the first water pump connection port 155, and then communicates with the bathroom water channel. This allows the first circulating water pump 12 and the water circuit adapter to be installed side-by-side along the length of the plate heat exchanger 14 on its side or rear, fully utilizing the space along the length of the plate heat exchanger 14, thereby reducing the overall thickness of the water circuit integration module and optimizing the spatial layout of the water circuit integration module in the gas-fired water heating device, thus reducing the overall thickness of the gas-fired water heating device.

[0046] In one embodiment, a second circulating water pump 11 is also included; the plate heat exchanger 14 also includes a heating water channel; the water adapter is also provided with a second water pump connection port 154, the opening of the second water pump connection port 154 is arranged along the length direction of the plate heat exchanger 14; the second circulating water pump 11 is connected to the water adapter through the second water pump connection port 154, the connection port of the second circulating water pump 11 and the second water pump connection port 154 are arranged side by side and opposite to each other and are connected to the heating water channel.

[0047] In this embodiment, a second circulating water pump 11 is also integrated on the plate heat exchanger 14. A water circuit adapter is provided with a second water pump connection port 154, and the opening of the second water pump connection port 154 is oriented along the length direction of the plate heat exchanger 14. The second circulating water pump 11 is connected to the water circuit adapter through the second water pump connection port 154, and the connection port of the second circulating water pump 11 and the second water pump connection port 154 are arranged side-by-side and opposite each other, then connected to the heating water channel, ensuring that hot water can smoothly enter the heating water channel from the second circulating water pump 11 to participate in the heating circulation. Furthermore, arranging the connection port of the second circulating water pump 11 and the second water pump connection port 154 side-by-side and opposite each other allows the second circulating water pump 11 to be installed along the length direction of the plate heat exchanger 14 on the side or rear of the plate heat exchanger 14, thereby optimizing the spatial layout of the water circuit integration module 10 in the gas-fired water heating equipment, reducing the thickness of the water circuit integration module 10 in the width direction, and thus reducing the overall thickness of the gas-fired water heating equipment. By simultaneously setting up heating water channels and bathroom water channels in the plate heat exchanger 14, the gas-fired water heater can have both heating and bathroom functions, thus improving the practicality of the gas-fired water heater.

[0048] In one embodiment, the water circuit adapter includes a first water circuit adapter 15 and a second water circuit adapter 16, which are respectively disposed on the left and right sides of the plate heat exchanger 14. The first water circuit adapter 15 is provided with a bathroom water inlet 153 and a heating water return outlet 152, and the second water circuit adapter 16 is provided with a bathroom water outlet 163 and a heating water inlet 162. The bathroom water inlet 153 is connected to the bathroom water outlet 163 through a bathroom water channel, and the heating water inlet 162 is connected to the heating water return outlet 152 through a heating water channel.

[0049] In this embodiment, the water circuit adapter consists of a first water circuit adapter 15 and a second water circuit adapter 16, located on the left and right sides of the plate heat exchanger 14, respectively. The first water circuit adapter 15 is provided with a bathroom inlet 153 and a heating return inlet 152, and the second water circuit adapter 16 is provided with a bathroom outlet 163 and a heating inlet 162. The cold water entering from the cold water inlet 166 first enters the bathroom water channel of the plate heat exchanger 14 through the bathroom inlet 153 of the first water circuit adapter 15, and after heat exchange in the bathroom water channel of the plate heat exchanger 14, it flows out from the bathroom outlet 163 to supply the user. Similarly, the high-temperature hot water for heating enters the heating water channel of the plate heat exchanger 14 through the heating inlet 162. After heating circulation and heat exchange with the cold water in the bathroom, the water with a lower temperature returns to the first water circuit adapter 15 through the heating return inlet 152.

[0050] In one embodiment, the first water circuit adapter 15 is provided with a second water pump connection port 154 and a first water pump connection port 155; or, the second water circuit adapter 16 is provided with a second water pump connection port 154 and a first water pump connection port 155; or, the first water circuit adapter 15 is provided with a second water pump connection port 154 and the second water circuit adapter 16 is provided with a first water pump connection port 155; or, the first water circuit adapter 15 is provided with a first water pump connection port 155 and the second water circuit adapter 16 is provided with a second water pump connection port 154.

[0051] In this embodiment, the second water pump connection port 154 and the first water pump connection port 155 can be configured in several ways. The second water pump connection port 154 and the first water pump connection port 155 can be provided on the first water circuit adapter 15; or, the second water circuit adapter 16 can be provided with both the second water pump connection port 154 and the first water pump connection port 155, thereby connecting both the second circulating water pump 11 and the first circulating water pump 12 to either the first water circuit adapter 15 or the second water circuit adapter 16, facilitating centralized management and wiring of the second circulating water pump 11 and the first circulating water pump 12. Furthermore, the second water pump connection port 154 can be provided on the first water circuit adapter 15, and the first water pump connection port 155 can be provided on the second water circuit adapter 16; or, the first water pump connection port 155 can be provided on the first water circuit adapter 15, and the second water pump connection port 154 can be provided on the second water circuit adapter 16. This allows for a more even distribution of the second circulating water pump 11 and the first circulating water pump 12 within the water circuit integration module 10, thus optimizing the overall layout of the water circuit integration module 10. The specific configuration of the second water pump connection port 154 and the first water pump connection port 155 can be selected according to actual usage requirements.

[0052] In one embodiment, the center of the bathroom inlet 153 is at the same height as the center of the heating inlet 162, and the center of the heating return inlet 152 is at the same height as the center of the bathroom outlet 163.

[0053] In this embodiment, by setting the center of the bathroom inlet 153 and the center of the heating inlet 162 at the same height, and setting the center of the heating return inlet 152 and the center of the bathroom outlet 163 at the same height, the planning of the heating water channel and the bathroom water channel is facilitated, improving the integration of the water circuit integration module 10 and making later maintenance easier. Furthermore, since the bathroom inlet 153 and the heating inlet 162 are at the same height, hot and cold water can be distributed and flow more evenly in the plate heat exchanger 14, thereby improving heat exchange efficiency. For example, during heat exchange, water at the same height allows hot and cold water to form a more stable convection within the plate heat exchanger 14, increasing the contact area and contact time between hot and cold water, thus improving heat exchange efficiency.

[0054] In one embodiment, a stepper motor 13 and a three-way valve 19 are also included; the second water circuit adapter 16 is provided with a three-way valve connection port 161, the opening of the three-way valve connection port 161 is oriented along the length direction of the plate heat exchanger 14; the outlet of the three-way valve 19 is arranged side by side with the three-way valve connection port 161 and is connected to the heating water channel; the stepper motor 13 is connected to the valve core of the three-way valve 19 to control the flow rate of hot water entering the heating water channel.

[0055] In this embodiment, a three-way valve connection port 161 is provided on the second water circuit adapter 16. The opening of the three-way valve connection port 161 is oriented along the length of the plate heat exchanger 14, allowing the three-way valve 19 to be integrated into the side of the plate heat exchanger 14, thereby further optimizing the spatial layout of the water circuit integration module 10. The outlet of the three-way valve 19 is arranged side-by-side with the three-way valve connection port 161 and connected to the heating water channel, enabling the three-way valve 19 to distribute and regulate the flow rate of hot water entering the heating water channel. A stepper motor 13 is located on the side of the plate heat exchanger 14 and connected to the valve core of the three-way valve 19. The stepper motor 13 drives the rotation of the valve core of the three-way valve 19 to flexibly adjust the flow rate of hot water in the heating water channel according to actual needs, ensuring efficient and stable operation of the heating system. It also achieves a good balance between heating water and bathroom water, avoiding various problems caused by unreasonable hot water distribution. For example, when the stepper motor 13 rotates at a certain angle, causing the valve core of the three-way valve 19 to rotate, the opening size of the three-way valve 19 will change accordingly. If the opening is enlarged, more hot water can enter the heating water channel to improve the heating effect; conversely, if the opening is reduced, the flow rate of hot water entering the heating water channel will decrease.

[0056] In one embodiment, it also includes an air vent valve 111, a pressure sensor 112, a pressure relief valve 115, and a pressure relief pipe 114, all of which are integrated into the heating water channel.

[0057] Specifically, pressure sensor 112 is used to detect the water pressure in the heating water channel. When the pressure in the heating water channel exceeds the opening pressure set by pressure relief valve 115, pressure relief valve 115 is opened, allowing water in the heating water channel to flow out from pressure relief pipe 114. And when the pressure drops to a safe range, pressure relief valve 115 automatically closes to protect the safety of the hot water equipment. When the heating water channel is initially filled with water or during operation, dissolved air in the water will escape, forming bubbles. If these bubbles accumulate in the heating water channel, they will affect the normal flow of heating water, thus reducing heating efficiency. By opening air vent valve 111, the air in the heating water channel is discharged, ensuring the unobstructed flow of the heating water channel and improving heating efficiency.

[0058] In one embodiment, a solenoid valve 17 and a manual water supply valve 18 are also included, both mounted on the second water circuit adapter 16. During operation of the gas-fired water heater, the pressure sensor 112 detects the water pressure in the heating water channel. When the water pressure in the heating water channel is too low, the main controller sends a signal to control the solenoid valve 17 to replenish water to the heating water channel. In the event of a failure of the solenoid valve 17, the manual water supply valve 18 can be manually opened to replenish water to the heating water channel, preventing the inability to replenish water due to the failure of the solenoid valve 17.

[0059] In one embodiment, the system also includes an inlet water temperature sensor 151 and an outlet water temperature sensor. The inlet water temperature sensor is located on the first water circuit adapter 15 and at the heating return water inlet 152. The outlet water temperature sensor 164 is located on the second water circuit adapter 16 and at the bathroom outlet 163.

[0060] In this embodiment, by placing the inlet water temperature sensor 151 at the heating return water inlet 152 on the first water circuit adapter 15, the temperature of the water returning from the heating water channel can be directly measured. During the heating cycle, the water temperature changes after the hot water releases heat through the heating cycle. By measuring the water temperature at the heating return water inlet 152, the gas water heater can accurately understand the remaining heat of the hot water after one heating cycle. Placing the outlet water temperature sensor 164 at the bathroom outlet 163 on the second water circuit adapter 16 allows for real-time detection of the bathroom hot water temperature provided to the user. For example, when the user turns on the shower head or faucet, the outlet water temperature sensor 164 can quickly sense the water temperature. If the water temperature does not meet the user's set temperature requirements, the system can adjust the heating power or the ratio of hot and cold water in a timely manner to ensure that the user can use hot water at a comfortable temperature. The data detected by the inlet water temperature sensor 151 and the outlet water temperature sensor 164 enable the control system of the gas water heater to make intelligent adjustments to improve the user experience. For example, when the inlet water temperature sensor 151 detects that the water temperature at the heating return water inlet 152 is low, the control system can increase the power of the burner 20 or adjust the circulation speed of the hot water in the water system to improve heating efficiency. For the outlet water temperature sensor 164, when it detects that the water temperature at the bathroom outlet 163 is lower than the user's desired temperature, the system can activate the heating device or adjust the mixing ratio of hot and cold water to ensure that the user receives the desired hot water temperature.

[0061] In one embodiment, a water flow sensor 113 is also included, integrated on the first water circuit adapter 15, for detecting the water flow through the bathroom water circuit.

[0062] On the other hand, such as Figure 1 , Figure 10As shown, this utility model embodiment also provides a gas-fired water heater, including: a shell 1; an expansion tank 40, a fan 30, a burner 20, a secondary condensing heat exchanger 50, and a water circuit integration module 10, all disposed inside the shell 1; the water circuit integration module 10, the burner 20, and the fan 30 are arranged sequentially from bottom to top along the height direction of the shell 1; the expansion tank 40 and the stepper motor 13 are located on the same side of the shell 1, and the expansion tank 40 is located above the stepper motor 13; the secondary condensing heat exchanger 50 is disposed between the expansion tank 40 and the fan 30; and a plate heat exchanger 14 is located near the front sidewall of the shell 1.

[0063] In this embodiment, the water circuit integration module 10 is located at the bottom of the gas-fired water heater, and the burner 20 and the fan 30 are arranged sequentially from bottom to top along the height direction of the housing 1, with the fan 30 close to the inner wall of the housing 1. The expansion tank 40 and the stepper motor 13 in the water circuit integration module 10 are located on the same side of the housing 1, with the expansion tank 40 positioned above the stepper motor 13. A secondary condensing heat exchanger 50 is installed between the expansion tank 40 and the fan 30, resulting in a more rational spatial layout of the components within the housing 1, effectively improving the space utilization rate within the housing 1 and facilitating a reduction in the overall volume of the gas-fired water heater. Furthermore, the plate heat exchanger 14 is positioned close to the front wall of the housing 1, making it easier to operate during maintenance and repair of the gas-fired water heater, reducing interference from maintenance personnel with other internal components of the gas-fired water heater, and eliminating the need for extensive disassembly of other components, thereby improving maintenance convenience.

[0064] It is understood that the gas-fired water heating equipment provided by this utility model may be, but is not limited to, a wall-hung boiler or a gas water heater.

[0065] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0066] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A waterway integrated module for a gas water heating apparatus, characterized by, The plate heat exchanger (14), a waterway adapter and a first circulating water pump (12) are included. The plate heat exchanger (14) includes a bathroom water channel; the waterway adapter is provided with a first water pump connecting port (155), the opening of the first water pump connecting port (155) is arranged along the length direction of the plate heat exchanger (14); the first circulating water pump (12) is connected with the waterway adapter through the first water pump connecting port (155), the connecting port of the first circulating water pump (12) is arranged opposite to the first water pump connecting port (155) in parallel and communicates with the bathroom water channel. A second circulating water pump (11) is further included; the plate heat exchanger (14) further includes a heating water channel; the waterway adapter is further provided with a second water pump connecting port (154), the opening of the second water pump connecting port (154) is arranged along the length direction of the plate heat exchanger (14); the second circulating water pump (11) is connected with the waterway adapter through the second water pump connecting port (154), the connecting port of the second circulating water pump (11) is arranged opposite to the second water pump connecting port (154) in parallel and communicates with the heating water channel.

2. The water route integration module of claim 1, wherein, The waterway adapter includes a first waterway adapter (15) and a second waterway adapter (16), along the length direction of the plate heat exchanger (14), the first waterway adapter (15) and the second waterway adapter (16) are arranged on the two sides of the plate heat exchanger (14) respectively; the first waterway adapter (15) is provided with a bathroom water inlet (153) and a heating return water outlet (152), the second waterway adapter (16) is provided with a bathroom water outlet (163) and a heating water inlet (162); the bathroom water inlet (153) communicates with the bathroom water outlet (163) through the bathroom water channel, the heating water inlet (162) communicates with the heating return water outlet (152) through the heating water channel.

3. The water route integration module of claim 2, wherein, The first waterway adapter (15) is provided with the second water pump connecting port (154) and the first water pump connecting port (155), or the second waterway adapter (16) is provided with the second water pump connecting port (154) and the first water pump connecting port (155), or the first waterway adapter (15) is provided with the second water pump connecting port (154), the second waterway adapter (16) is provided with the first water pump connecting port (155), or the first waterway adapter (15) is provided with the first water pump connecting port (155), the second waterway adapter (16) is provided with the second water pump connecting port (154).

4. The water route integration module according to claim 3, wherein, The center of the bathroom water inlet (153) and the center of the heating water inlet (162) are at the same height, the center of the heating return water outlet (152) and the center of the bathroom water outlet (163) are at the same height.

5. The water route integration module of claim 3, wherein, ​ 6. The water route integration module of claim 3, wherein, The waterway integrated module (10) further comprises a stepping motor (13) and a three-way valve (19); the second waterway adapter (16) is provided with a three-way valve connecting port (161), and the opening of the three-way valve connecting port (161) faces along the length direction of the plate heat exchanger (14); the outlet of the three-way valve (19) is arranged opposite to the three-way valve connecting port (161) in parallel and communicates with the heating water channel, and the stepping motor (13) is connected with the valve core of the three-way valve (19) to control the hot water flow entering the heating water channel.

7. The water route integration module of claim 3, wherein, The waterway integrated module (10) further comprises a water inlet temperature sensor (151) and a water outlet temperature sensor (164); the water inlet temperature sensor (151) is arranged on the first waterway adapter (15) and at the heating return water port (152); and the water outlet temperature sensor (164) is arranged on the second waterway adapter (16) and at the bathroom water outlet port (163).

8. The water route integration module of claim 3, wherein, The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16).

9. A gas water heating apparatus, characterised in that, The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16).

10. Gas water heating apparatus according to claim 9, characterised in that, The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on the second waterway adapter (16). The waterway integrated module (10) further comprises an electromagnetic valve (17) and a manual water supplement valve (18), both of which are arranged on

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