A gas water heater

Abstract

The application belongs to the technical field of water heaters, and particularly relates to a gas water heater. The application sets an installation main body in a cold water pipeline, and integrates an electrolysis component inside the installation main body. The electrolysis component is powered by a power supply, and low-voltage discharge purification is performed on the flowing cold water. Since the cold water has a low temperature, the decomposition of ozone can be effectively inhibited, so that the sterilization and purification efficiency is improved. The water body that has been sufficiently purified is heated in a subsequent heat exchange link, so that the water quality can reach a high degree of cleanliness before heating, and the overall purification effect is more optimal and the sterilization is more thorough. In addition, the electrolysis component is integrated in the installation main body, so that it is not directly exposed to a high-pressure water flow environment, the risk of loosening or damage of components caused by water pressure impact is effectively reduced, and the stability and service life of equipment operation are significantly improved.

Description

Technical Field

[0001] This application belongs to the field of gas water heater technology, specifically relating to a gas water heater with sterilization function. Background Technology

[0002] Gas water heaters are common gas appliances that use gas as fuel and transfer heat to cold water flowing through a heat exchanger to quickly produce hot water. Due to their rapid heating, ease of use, and low operating costs, they have become an indispensable appliance in daily household activities such as washing and bathing. With the improvement of living standards, consumers' demands for water heaters are no longer limited to instant hot water; they are paying more attention to water cleanliness and gentleness on the skin. Younger users, in particular, are increasingly valuing a healthy water experience, a trend that has driven continuous innovation and upgrades in water treatment technology for gas water heaters.

[0003] Currently, most mainstream gas water heaters use ozone sterilization technology for water purification. Ozone has strong oxidizing properties, effectively killing bacteria and viruses in water and degrading organic pollutants, thus significantly improving water quality. For example, the patent application number 202422112020.X uses a high-voltage corona discharge method to produce ozone from the air at room temperature and then dissolves it into the water flow through a Venturi tube to achieve instant ozone water generation. This method is simple in structure, low in cost, and has certain practicality. However, it has significant drawbacks: the corona discharge process generates high temperatures, causing nitrogen and oxygen in the air to react and produce nitrogen oxides. These harmful substances may enter the human body with the water flow, posing potential health risks with long-term exposure, thus limiting the further promotion and application of this technology.

[0004] To address the aforementioned issues, patent application number 202320896165.6 proposes an electrolytic ozone shower head, attempting to avoid the generation of nitrogen oxides at the source. This solution integrates an electrode assembly, a low-voltage electrolysis circuit, and a rechargeable battery unit into the shower head, utilizing the principle of water electrolysis to directly generate ozone in the water flow, eliminating the need for air-based oxygen production and fundamentally preventing the formation of nitrogen compounds. However, this design still faces new challenges: First, as the terminal device of a hot water system, the water in the shower head is already heated, and ozone is unstable in high-temperature water, easily decomposing, leading to a significant decrease in actual sterilization efficiency; second, the high water pressure inside the shower head may increase structural stress when installing the electrode assembly, potentially causing component loosening or damage during long-term operation, affecting the stability of the equipment's water purification effect. Utility Model Content

[0005] The purpose of this application is to provide a gas water heater with good water sterilization and purification effect and high sterilization stability, which is achieved through the following technical solution:

[0006] A gas-fired water heater includes a water passage pipe, on which a water ion generator is installed for purifying water by low-voltage discharge; the water passage pipe includes a cold water pipe and a hot water pipe connected in sequence; the water ion generator includes an installation body partially built into the cold water pipe, and an electrolysis component integrated inside the installation body; the gas-fired water heater also includes a power supply electrically connected to the electrolysis component.

[0007] Preferably, the installation body includes an intervention section that penetrates the cold water pipe, and the interior of the intervention section is connected to the cold water pipe; the electrolysis assembly includes a low-pressure electrode group that is at least partially distributed in the intervention section.

[0008] Preferably, the intervention section includes a protective sleeve circumferentially distributed around the outside of the low-pressure electrode group and a sealing cover plate sleeved on the end of the protective sleeve and forming the inner cavity of the intervention section with the protective sleeve. The sleeve wall and / or the sealing cover plate are provided with water passage holes for fluid flow.

[0009] Preferably, the intervention section is provided with a fixing plate for fixing the free end of the low-pressure electrode assembly; the fixing plate is radially disposed in the inner cavity of the intervention section, its outer edge is fixedly connected to the inner wall of the intervention section, and a water passage hole is provided on the fixing plate.

[0010] Preferably, the mounting body further includes an embedded section coaxially connected to the intervention section, the embedded section having a gradually narrowing design at one end near the intervention section, and a receiving seat adapted to the embedded section is provided at the corresponding position of the cold water pipe.

[0011] Preferably, the outer peripheral wall of the embedded section is provided with an annular platform, and the inner wall of the receiving seat extends radially inward to form a support plate for abutting against the annular platform.

[0012] Preferably, the outer wall of the embedded section and the inner wall of the receiving seat are connected by a mutually cooperating plug-in structure to achieve circumferential positioning.

[0013] Preferably, the mounting body further includes an external part coaxially connected to the end of the embedded section opposite to the intervention section, and the electrolysis assembly further includes a control circuit board encapsulated in the inner cavity of the external part and electrically connected to the low-voltage electrode group; the embedded section is provided with a barrier filler to prevent water from entering the external part.

[0014] Preferably, the external part extends symmetrically outward to form at least one set of mounting ears; the corresponding position of the cold water pipe is provided with a connecting boss that matches the mounting ears; the mounting ears and the connecting boss are detachably and fixedly connected by fasteners.

[0015] Preferably, a connecting bridge is formed between the mounting ear and the outer peripheral wall of the embedded section, and the receiving seat is provided with a clearance through hole corresponding to the position of the connecting bridge, and the clearance through hole abuts against the connecting bridge in the installed state.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] This application involves installing a main body within a cold water pipeline and integrating an electrolysis unit inside. A power supply powers the electrolysis unit, purifying the flowing cold water through a low-pressure discharge. The low temperature of the cold water effectively inhibits ozone decomposition, thereby improving sterilization and purification efficiency. The thoroughly purified water then enters the subsequent heat exchange stage for heating, ensuring a high level of cleanliness before heating, resulting in superior overall purification and more thorough sterilization. Furthermore, integrating the electrolysis unit into the main body prevents direct exposure to high-pressure water flow, effectively reducing the risk of component loosening or damage due to water pressure impact, and significantly improving the stability and lifespan of the equipment.

[0018] The intervention section of this application is formed by a protective sleeve surrounding the low-pressure electrode assembly and enclosing it with a sealing cover to form the inner cavity of the intervention section. Water passage holes are provided in the sleeve wall and / or the sealing cover. This structural design ensures that cold water can flow smoothly into the inner cavity and fully contact the low-pressure electrode assembly, ensuring that the ionization reaction proceeds fully, resulting in higher ozone generation efficiency and more stable effects, thereby improving the water purification effect. At the same time, the protective sleeve provides effective protection for the low-pressure electrode assembly, avoiding direct impact from water flow impact or pressure changes in the pipeline on the electrode assembly, while the sealing cover further enhances the structural sealing, significantly reducing the risk of component loosening and damage, and ensuring greater stability of equipment operation.

[0019] This application uses a fixing plate installed radially within the inner cavity of the intervention section, with its outer edge fixedly connected to the inner wall of the intervention section. This not only precisely fixes the free end of the low-pressure electrode assembly, preventing displacement or shaking of the electrode assembly due to water flow impact or pressure fluctuations, but also ensures smooth water flow through the water passage holes on the fixing plate, ensuring that the low-pressure electrode assembly maintains sufficient and stable contact with the water flow at all times. This design not only strengthens the installation firmness of the electrolysis components, but also does not affect the ionization reaction efficiency, making ozone generation more stable and further improving the operational stability of the equipment and the water purification effect.

[0020] This application features an embedded section coaxially connected to the intervention section, and a matching receiving seat on the cold water pipe. The precise fit of these two components forms a tightly fitted installation structure, effectively preventing water leakage from the cold water pipe and significantly improving the airtightness of the connection. Furthermore, by setting an annular platform on the outer periphery of the embedded section and correspondingly extending a support plate from the inner wall of the receiving seat, the two components abut against each other to form a double sealing limit, further perfecting the sealing effect and completely eliminating the risk of leakage. Simultaneously, the matching plug-in structure between the outer wall of the embedded section and the inner wall of the receiving seat effectively restricts the circumferential rotation of the installation body relative to the cold water pipe, ensuring a stable contact position between the electrolysis components and the water flow, further enhancing the overall stability and reliability of the equipment.

[0021] This application incorporates an external portion coaxially connected to the embedded section at the end opposite to the intervention section. The control circuit board is encapsulated within the cavity of this external portion and electrically connected to the low-voltage electrode assembly. This not only makes the wiring layout of the electrode assembly and control circuit more organized and the connection operation more convenient, but also prevents water from directly contacting the control circuit board. Simultaneously, the inclusion of a barrier filler inside the embedded section forms a reliable waterproof barrier, effectively preventing water from the cold water pipe from seeping into the external portion and avoiding moisture damage to the control circuit board. This ensures the safety and stability of the circuit operation and further extends the overall service life of the equipment.

[0022] This application provides at least one set of mounting lugs that extend symmetrically outward from the external part, paired with a matching connecting boss at the corresponding position of the cold water pipe. The two are detachably and fixedly connected by fasteners, making the connection between the installation body and the cold water pipe more secure and easier to install and remove. Furthermore, a connecting bridge is provided between the mounting lugs and the outer peripheral wall of the embedded section, and a clearance hole is opened through the corresponding position of the receiving seat. In the installed state, the clearance hole and the connecting bridge abut against each other, which not only provides additional support for the mounting lugs, but also restricts the displacement of the installation body, effectively preventing positional deviation caused by water flow impact or pressure fluctuations during equipment operation, and greatly improving the installation stability and operational reliability of the overall structure. Attached Figure Description

[0023] The attached diagram will be briefly described below:

[0024] Figure 1 This is a schematic diagram of the overall internal structure of a gas water heater.

[0025] Figure 2 for Figure 1 Enlarged structural diagram of the middle section;

[0026] Figure 3 This is a schematic diagram of the overall structure of a water ion generator.

[0027] Figure 4 This is a cross-sectional view of a water ion generator;

[0028] Reference numerals: 1000, water ion generator; 1100, mounting body; 1110, intervention section; 1111, protective sleeve; 1112, sealing cover; 1113, fixing plate; 1120, embedding section; 1121, annular platform; 1122, barrier filler; 1130, external part; 1131, mounting ear; 1132, connecting bridge; 1200, electrolysis assembly; 1210, low-voltage electrode assembly; 1220, control circuit board; 2000, cold water pipe; 2100, receiving seat; 2110, support plate; 2120, clearance through hole; 2200, connecting boss; 3000, hot water pipe. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0030] Example 1

[0031] A gas-fired water heater includes a water passage pipe, which comprises a cold water pipe 2000 and a hot water pipe 3000 connected in sequence. The cold water pipe 2000 exchanges heat within a heat exchanger to obtain hot water. A water ion generator 1000 is installed on the water passage pipe to purify the water by low-pressure discharge. The water ion generator 1000 includes a mounting body 1100 partially built into the cold water pipe 2000 and an electrolysis component 1200 integrated within the mounting body 1100. The gas-fired water heater also includes a power supply electrically connected to the electrolysis component 1200. The mounting body 1100 includes an insertion section 1110, an embedded section 1120, and an external section 1130 connected in sequence.

[0032] Specifically, the intervention section 1110 penetrates the cold water pipe 2000. The intervention section 1110 includes a protective sleeve 1111 and a sealing cover plate 1112 fitted onto the end of the protective sleeve 1111 and forming the inner cavity of the intervention section 1110. The protective sleeve 1111 and / or the sealing cover plate 1112 have water passage holes for fluid flow. Therefore, the interior of the intervention section 1110 is connected to the cold water pipe 2000. The electrolysis assembly 1200 includes a low-voltage electrode group 1210, which includes a positive electrode post and a negative electrode post. The free ends of the electrode posts are distributed within the inner cavity of the intervention section 1110, and the intervention section 1110 includes circumferentially distributed around the outside of the electrode posts. In this embodiment, in order to ensure that the free end of the electrode post is stably fixed in the inner wall of the intervention section 1110, the intervention section 1110 is provided with a fixing plate 1113 for fixing the free end of the low-pressure electrode group 1210; the fixing plate 1113 is arranged radially in the inner cavity of the intervention section 1110, its outer edge is fixedly connected to the inner wall of the intervention section 1110, and a water passage hole is provided on the fixing plate 1113.

[0033] The embedded section 1120 is coaxially connected to the intervention section 1110. The end of the embedded section 1120 near the intervention section 1110 has a gradually narrowing design. A receiving seat 2100 adapted to the embedded section 1120 is provided at the corresponding position of the cold water pipe 2000. Specifically, the outer peripheral wall of the embedded section 1120 is provided with an annular platform 1121, and the inner wall of the receiving seat 2100 extends radially inward to form a support plate 2110 for abutting against the annular platform 1121. Furthermore, to prevent the installation body 1100 from axially rotating relative to the cold water pipe 2000 during water treatment and affecting the stability of the equipment operation, in this embodiment, the outer wall of the embedded section 1120 and the inner wall of the receiving seat 2100 are connected by a mutually cooperating plug-in structure to achieve circumferential limiting. Specifically, a slider is provided on the outer wall of the embedded section 1120, and a slot is provided on the inner wall of the receiving seat 2100. During installation, the slider only needs to be slid into the slot to complete the fixation.

[0034] The external portion 1130 is coaxially connected to the embedded section 1120 at the end opposite to the intervention section 1110. The electrolysis assembly 1200 also includes a control circuit board 1220 encapsulated in the inner cavity of the external portion 1130 and electrically connected to the low-voltage electrode group 1210. Further, to prevent water from the cold water pipe 2000 from entering the external portion 1130, the embedded section 1120 is provided with a barrier filler 1122 to prevent water from entering the external portion. In addition, the external portion 1130 extends symmetrically outward to form a set of mounting lugs 1131; the corresponding position of the cold water pipe 2000 is provided with a connecting boss 2200 adapted to the mounting lugs 1131; the mounting lugs 1131 and the connecting bosses 2200 are detachably fixedly connected by fasteners.

[0035] During installation, first align the embedded section 1120 with the receiving seat 2100 of the cold water pipe 2000, so that the slider on the outer wall of the embedded section 1120 is precisely slid into the groove on the inner wall of the receiving seat 2100 to complete the circumferential positioning; at this time, the annular platform 1121 of the embedded section 1120 is in close contact with the support plate 2110 of the receiving seat 2100, and the mounting ear 1131 of the external part 1130 is aligned with the connecting boss 2200 of the cold water pipe. Then, fasteners such as bolts are passed through the reserved holes of the mounting ear 1131 and the connecting boss 2220 to fasten the water ion generator 1000 and the cold water pipe 2000 in a fast and stable manner. The whole process is convenient to operate and the positioning is accurate.

[0036] During use, the power supply provides power to the electrolysis component 1200, and the control circuit board 1220 drives the low-voltage electrode group 1210 to perform low-voltage discharge (12V rated operating voltage) in the inner cavity of the intervention section 1110. Cold water passes through the water passage holes on the protective sleeve 1111 cylinder wall, sealing cover plate 1112, and fixing plate 1113, and comes into full contact with the positive and negative electrode posts. The ozone generated by ionization quickly dissolves in the water, achieving efficient sterilization and purification of the cold water. The purified cold water flows into the heat exchanger to complete heat exchange, forming clean and warm hot water. This avoids the problem of ozone decomposition caused by high temperature, and thoroughly removes bacteria and pollutants from the water. At the same time, no harmful byproducts such as nitrogen oxides are generated throughout the process, taking into account both heating efficiency and the need for healthy water.

[0037] Example 2

[0038] A gas-fired water heater includes a water passage pipe, which comprises a cold water pipe 2000 and a hot water pipe 3000 connected in sequence. The cold water pipe 2000 exchanges heat within a heat exchanger to obtain hot water. A water ion generator 1000 is installed on the water passage pipe to purify the water by low-pressure discharge. The water ion generator 1000 includes a mounting body 1100 partially built into the cold water pipe 2000 and an electrolysis component 1200 integrated within the mounting body 1100. The gas-fired water heater also includes a power supply electrically connected to the electrolysis component 1200. The mounting body 1100 includes an insertion section 1110, an embedded section 1120, and an external section 1130 connected in sequence.

[0039] Specifically, the intervention section 1110 penetrates the cold water pipe 2000. The intervention section 1110 includes a protective sleeve 1111 and a sealing cover plate 1112 fitted onto the end of the protective sleeve 1111 and forming the inner cavity of the intervention section 1110. The protective sleeve 1111 and / or the sealing cover plate 1112 have water passage holes for fluid flow. Therefore, the interior of the intervention section 1110 is connected to the cold water pipe 2000. The electrolysis assembly 1200 includes a low-voltage electrode group 1210, which includes a positive electrode post and a negative electrode post. The free ends of the electrode posts are distributed within the inner cavity of the intervention section 1110, and the intervention section 1110 includes circumferentially distributed around the outside of the electrode posts. In this embodiment, in order to ensure that the free end of the electrode post is stably fixed in the inner wall of the intervention section 1110, the intervention section 1110 is provided with a fixing plate 1113 for fixing the free end of the low-pressure electrode group 1210; the fixing plate 1113 is arranged radially in the inner cavity of the intervention section 1110, its outer edge is fixedly connected to the inner wall of the intervention section 1110, and a water passage hole is provided on the fixing plate 1113.

[0040] The embedded section 1120 is coaxially connected to the intervention section 1110. The end of the embedded section 1120 near the intervention section 1110 has a gradually narrowing design. A receiving seat 2100 adapted to the embedded section 1120 is provided at the corresponding position of the cold water pipe 2000. Specifically, the outer peripheral wall of the embedded section 1120 is provided with an annular platform 1121, and the inner wall of the receiving seat 2100 extends radially inward to form a support plate 2110 for abutting against the annular platform 1121. Furthermore, to prevent the installation body 1100 from axially rotating relative to the cold water pipe 2000 during water treatment and affecting the stability of the equipment operation, in this embodiment, the outer wall of the embedded section 1120 and the inner wall of the receiving seat 2100 are connected by a mutually cooperating plug-in structure to achieve circumferential limiting. Specifically, a slider is provided on the outer wall of the embedded section 1120, and a slot is provided on the inner wall of the receiving seat 2100. During installation, the slider only needs to be slid into the slot to complete the fixation.

[0041] The external portion 1130 is coaxially connected to the embedded section 1120 at the end opposite to the intervention section 1110. The electrolysis assembly 1200 also includes a control circuit board 1220 encapsulated in the inner cavity of the external portion 1130 and electrically connected to the low-voltage electrode group 1210. Further, to prevent water from the cold water pipe 2000 from entering the external portion 1130, the embedded section 1120 is provided with a barrier filler 1122 to prevent water from entering the external portion. In addition, the external portion 1130 extends symmetrically outward to form a set of mounting lugs 1131; the corresponding position of the cold water pipe 2000 is provided with a connecting boss 2200 adapted to the mounting lugs 1131; the mounting lugs 1131 and the connecting bosses 2200 are detachably fixedly connected by fasteners. In this embodiment, a connecting bridge 1132 is integrally formed between the mounting ear 1131 and the outer peripheral wall of the embedded section 1120. The receiving seat 2100 is provided with a suitable clearance through hole 2120 corresponding to the position of the connecting bridge 1132. In the installed state, the connecting bridge 1132 passes through the clearance through hole 2120 and is in close contact with the hole wall, which not only provides additional support for the mounting ear 1131, but also restricts the displacement of the installation body 1100, avoiding positional displacement caused by water flow impact or pressure fluctuation during equipment operation, and further enhancing the installation stability and operational reliability of the overall structure.

[0042] In addition, the gas water heater in this embodiment is equipped with a water flow detection component, which is electrically connected to the control circuit board 1220. It can monitor the water flow speed and flow rate changes in the cold water pipe 2000 in real time and feed the detection signal back to the control circuit board 1220. The control circuit board 1220 dynamically adjusts the output current of the electrolysis component 1200 to ensure that the ozone generation efficiency remains stable when the water flow state changes, thus ensuring consistent purification effect.

Claims

1. A gas-fired water heater, comprising a water passage pipe, wherein a water ion generator (1000) is installed on the water passage pipe for purifying the water by low-voltage discharge; the water passage pipe includes a cold water pipe (2000) and a hot water pipe (3000) connected in sequence; characterized in that, The water ion generator (1000) includes a mounting body (1100) partially built into the cold water pipe (2000) and an electrolysis component (1200) integrated inside the mounting body (1100); the gas water heater also includes a power supply electrically connected to the electrolysis component (1200).

2. A gas water heater according to claim 1, characterized in that, The installation body (1100) includes an intervention section (1110) that penetrates the cold water pipe (2000), and the interior of the intervention section (1110) is connected to the cold water pipe (2000); the electrolysis assembly (1200) includes a low-voltage electrode group (1210) that is at least partially distributed in the intervention section (1110).

3. A gas water heater according to claim 2, characterized in that, The intervention section (1110) includes a protective sleeve (1111) circumferentially surrounding the outside of the low-pressure electrode group (1210) and a sealing cover plate (1112) sleeved on the end of the protective sleeve (1111) and forming the inner cavity of the intervention section (1110) together with the protective sleeve (1111). The sleeve wall of the protective sleeve (1111) and / or the sealing cover plate (1112) are provided with water passage holes for fluid flow.

4. A gas water heater according to claim 2, characterized in that, The intervention section (1110) is provided with a fixing plate (1113) for fixing the free end of the low-voltage electrode group (1210); the fixing plate (1113) is arranged radially in the inner cavity of the intervention section (1110), and its outer edge is fixedly connected to the inner wall of the intervention section (1110). A water passage hole is provided on the fixing plate (1113).

5. A gas water heater according to claim 2, characterized in that, The installation body (1100) also includes an embedded section (1120) coaxially connected to the intervention section (1110). The embedded section (1120) has a gradually narrowing design at one end near the intervention section (1110). The corresponding position of the cold water pipe (2000) is provided with a receiving seat (2100) adapted to the embedded section (1120).

6. A gas water heater according to claim 5, characterized in that, The outer peripheral wall of the embedded section (1120) is provided with an annular platform (1121), and the inner wall of the receiving seat (2100) extends radially inward to form a support plate (2110) for abutting against the annular platform (1121).

7. A gas water heater according to claim 5, characterized in that, The outer wall of the embedded section (1120) and the inner wall of the receiving seat (2100) are connected by a mutually cooperating plug-in structure to achieve circumferential positioning.

8. A gas water heater according to claim 5, characterized in that, The mounting body (1100) also includes an external part (1130) coaxially connected to the embedded section (1120) at the end opposite to the intervention section (1110). The electrolysis assembly (1200) also includes a control circuit board (1220) encapsulated in the inner cavity of the external part (1130) and electrically connected to the low-voltage electrode group (1210). The embedded section (1120) is provided with a barrier filler (1122) to prevent water from entering the external part (1130).

9. A gas water heater according to claim 8, characterized in that, The external part (1130) extends symmetrically outward to form at least one set of mounting lugs (1131); the corresponding position of the cold water pipe (2000) is provided with a connecting boss (2200) that is adapted to the mounting lugs (1131); the mounting lugs (1131) and the connecting boss (2200) are detachably and fixedly connected by fasteners.

10. A gas water heater according to claim 9, characterized in that, A connecting bridge (1132) is formed between the mounting ear (1131) and the outer peripheral wall of the embedding section (1120). The receiving seat (2100) is provided with a clearance through hole (2120) corresponding to the position of the connecting bridge (1132), and the clearance through hole (2120) and the connecting bridge (1132) are in contact in the installed state.

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