Gas water heater and control method of gas water heating system

Abstract

This invention relates to a gas water heater and a control method for a gas water heating system. The gas water heater includes a water heater body, a generating device, and an activation device. When a skin-beautifying bath is desired, the water heater body provides hot water to the activation device, and the generating device provides ozone to the activation device, resulting in an ozone-water solution containing dissolved ozone in the activation device. At this time, the activation device delivers the ozone-water to the hot water pipe for the user's bathing use. Because the activation device can form at least a number of bubbles from the ozone dissolved in the water, the water flowing into the hot water pipe contains ozone bubbles, activating its cleaning properties and allowing it to better penetrate the skin pores for deep cleaning, achieving deep skin rejuvenation and enhancing the user's bathing experience.

Description

Technical Field

[0001] This invention relates to the field of hot water equipment technology, and in particular to a control method for gas water heaters and gas hot water systems. Background Technology

[0002] With the improvement of living standards, users' demands for gas water heaters are no longer limited to just comfortable and constant temperature; they are paying more attention to additional functions such as healthy bathing and skin-beautifying bathing. Ozone water, due to its bactericidal and disinfecting effects, has been introduced into the water heater industry. The ozone water generation technology applied to gas water heaters mostly utilizes corona discharge to ozonate air, mixing it with water through a siphon effect in a gas-water mixing and dissolving tube to prepare ozone water. Ozone has strong oxidizing properties; ozone water of a certain concentration can effectively remove heavy metal ions, soften water, kill bacteria, and deeply rejuvenate the skin, achieving a skin-beautifying bathing effect.

[0003] Most existing gas water heaters focus on mixing ozone and water to improve the uniformity of the mixture when preparing ozone water. However, the cleaning effect of ozone water prepared in this way is still not good, and it cannot meet the needs of users for deep skin care baths. Summary of the Invention

[0004] The first technical problem solved by this invention is to provide a gas water heater that can effectively activate ozone water, achieve deep cleaning, and improve the user's bathing experience.

[0005] The second technical problem solved by this invention is to provide a control method for a gas-fired hot water system that can effectively activate ozone water to achieve deep cleaning; at the same time, it can also reasonably control the generation of ozone to achieve an economical and effective bathing effect.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A gas water heater includes: a water heater body; a generating device for preparing and containing ozone; and an activation device, wherein the water outlet of the water heater body and the generating device are both connected to the activation device, the activation device being used to form at least a number of bubbles from ozone dissolved in water, and the activation device being connected to a hot water pipe.

[0008] The gas water heater of this invention offers the following advantages compared to the prior art: When a skin-beautifying bath is desired, the water heater body provides hot water to the activation device, and the generating device provides ozone to the activation device, resulting in an ozone-water solution containing dissolved ozone in the activation device. At this time, the activation device delivers the ozone-water to the hot water pipe for the user's bathing use. Because the activation device can at least form several bubbles from the ozone dissolved in the water, the water flowing into the hot water pipe contains ozone bubbles, activating its cleaning properties and allowing it to better penetrate the skin pores for deep cleaning, achieving deep skin rejuvenation and enhancing the user's bathing experience.

[0009] In one embodiment, the activation device includes a housing and an activation element fitted inside the housing. The housing has a first port and a second port spaced apart. The water outlet of the water heater body and the generating device are both connected to the first port. The second port is used to connect to the hot water pipe. The activation element has flow channels that are respectively connected to the first port and the second port. The flow channels are used to form at least a number of bubbles from ozone dissolved in water.

[0010] In one embodiment, the cross-sectional area S of the flow channel is set to decrease first and then increase along the direction from the first port to the second port.

[0011] In one embodiment, there are multiple flow channels, which are arranged side by side and spaced apart on the activator.

[0012] In one embodiment, the gas water heater further includes a mixing device, wherein the water outlet of the water heater body and the generating device are both connected to the mixing device, and the mixing device is connected to the first port.

[0013] In one embodiment, the mixing device includes a chamber, a guide pipe, and a first connector and a second connector spaced apart and connected to the chamber. The first connector is connected to the water outlet of the water heater body, and the second connector is connected to the generating device. The guide pipe is located at the bottom of the chamber, and one end extends into the chamber and is higher than the position of the first connector and the second connector. The portion of the guide pipe higher than the first connector and the second connector is provided with a guide hole.

[0014] In one embodiment, the portion of the second connector located within the chamber is provided with at least two air inlets, the air inlets being configured to be below the liquid level within the chamber.

[0015] In one embodiment, the gas water heater further includes a one-way valve for allowing gas or liquid to flow unidirectionally from the generating device to the mixing device.

[0016] In one embodiment, the gas water heater further includes a detection probe for detecting the ozone concentration output by the activation device.

[0017] In one embodiment, the gas water heater further includes a water pump for providing power for water circulation to the water heater body.

[0018] In one embodiment, the gas water heater further includes a sensor for acquiring the inlet water flow rate in the water heater body.

[0019] In one embodiment, the gas water heater further includes an air pump for delivering compressed air to the generating device.

[0020] In one embodiment, the gas water heater further includes a display component and a controller. The display component, the generating device, and the water heater body are all connected to the controller. The display component is used at least to control or adjust the generating device and the water heater body.

[0021] The second technical problem mentioned above is solved by the following technical solution:

[0022] A control method for a gas-fired water heating system, the gas-fired water heating system comprising an inlet pipe, a hot water pipe, a cold water pipe, a water outlet, and a gas water heater as described above, wherein the inlet pipe is connected to the water inlet end of the water heater body, the hot water pipe is connected to an activation device, the cold water pipe is connected to the inlet pipe, and the water outlet is connected between the hot water pipe and the cold water pipe; a return pipe is connected between the hot water pipe and the inlet pipe, or a connecting pipe is connected between the cold water pipe and the hot water pipe to form a circulating water circuit; the method includes the following steps: determining the operating mode of the gas-fired water heating system; if the operating mode is a circulating mode, controlling... Water is circulated in the circulating water circuit, and the ozone concentration in the output water flow of the activation device is obtained. When the ozone concentration is lower than the critical concentration, the generating device is activated to make the ozone concentration higher than or equal to the critical concentration. If the operating mode is shower mode, water is controlled to flow sequentially through the inlet pipe, the water heater body, the hot water pipe, and the water point, and the ozone concentration in the output water flow of the activation device and the shower water temperature input from the gas water heater are obtained. When the ozone concentration is lower than the critical concentration and the shower water temperature is lower than the preset water temperature, the generating device is activated to make the ozone concentration higher than or equal to the critical concentration.

[0023] The control method for the gas-fired hot water system described in this invention offers the following advantages compared to the prior art: When using the above-mentioned gas-fired water heater, for a skin-beautifying bath, the water heater body provides hot water to the activation device, and the generating device provides ozone to the activation device, resulting in an ozone-water solution containing dissolved ozone in the activation device. At this time, the activation device delivers the ozone-water to the hot water pipe for the user's bathing use. Since the activation device can form at least a number of bubbles from the ozone dissolved in the water, the water flowing into the hot water pipe contains ozone bubbles, activating its cleaning properties and allowing it to better penetrate the skin pores for deep cleaning, achieving deep skin rejuvenation and enhancing the user's bathing experience. Furthermore, when controlling ozone generation, different ozone generation conditions are controlled according to different operating modes. For example, in circulation mode, if the ozone concentration is below the critical concentration, the generating device is activated to increase the concentration to the critical concentration; in shower mode, if the ozone concentration is below the critical concentration and the shower water temperature is below the preset water temperature, the generating device is activated. This makes ozone generation more compatible with different operating modes, thus making ozone generation control more reasonable and achieving economical and effective bathing results.

[0024] In one embodiment, after starting the generating device when the ozone concentration is below the critical concentration, the method further includes: estimating a first ozone production amount based on the circulating water flow rate in the circulating water circuit and a preheating time; and adjusting the operating power of the generating device based on the first ozone production amount so that the ozone concentration is higher than or equal to the critical concentration.

[0025] In one embodiment, after activating the generating device when the ozone concentration is below a critical concentration and the shower water temperature is below a preset water temperature, the method further includes: estimating a second ozone production amount based on the water flow rate in the inlet pipe and the shower time; and adjusting the operating power of the generating device based on the second ozone production amount so that the ozone concentration is higher than or equal to the critical concentration.

[0026] In one embodiment, if the operating mode is shower mode, the steps of controlling the water inlet pipe, the water heater body, the hot water pipe and the water point to flow water sequentially, and obtaining the ozone concentration in the output water flow of the activation device and the shower water temperature input in the gas water heater, further include: when the ozone concentration is lower than the critical concentration and the shower water temperature is higher than or equal to the preset water temperature, starting the air pump and controlling the generating device to remain in a stopped working state. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the gas-fired hot water system structure described in one embodiment;

[0030] Figure 2 This is a schematic diagram of the activation device structure described in one embodiment;

[0031] Figure 3 This is a schematic diagram of the activation element structure described in one embodiment;

[0032] Figure 4 This is a schematic diagram of the mixing device structure described in one embodiment;

[0033] Figure 5 The control method flow of a gas-fired hot water system described in one embodiment is as follows. Figure 1 ;

[0034] Figure 6 The control method flow of a gas-fired hot water system described in one embodiment is as follows. Figure 2 ;

[0035] Figure 7 The control method flow of a gas-fired hot water system described in one embodiment is as follows. Figure 3 ;

[0036] Figure 8 The control method flow of a gas-fired hot water system described in one embodiment is as follows. Figure 4 ;

[0037] Figure 9 This is a logic control diagram of a gas-fired hot water system in a circulating mode as described in one embodiment;

[0038] Figure 10 This is a logic control diagram of a gas-fired hot water system in shower mode as described in one embodiment.

[0039] Figure label:

[0040] 100. Gas water heater; 110. Water heater body; 111. Water pump; 112. Sensor; 120. Generating device; 121. Gas pump; 122. One-way valve; 130. Activation device; 131. Housing; 1311. First port; 1312. Second port; 1313. Step; 1314. Mounting hole; 132. Activation element; 1321. Flow channel; 133. Detection probe; 140. 141. Mixing device; 142. Cabin; 143. Sealing part; 144. First connector; 145. Water inlet; 146. Second connector; 147. Air inlet; 148. Guide pipe; 149. Guide hole; 140. Opening; 150. Display component; 160. Controller; 200. Water inlet pipe; 300. Hot water pipe; 400. Water usage point; 500. Return water pipe; 600. Cold water pipe. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] In one embodiment, please refer to Figure 1 A gas water heater 100 includes a water heater body 110, a generating device 120, and an activation device 130. The generating device 120 is used to generate and contain ozone. The water outlet of the water heater body 110 and the generating device 120 are both connected to the activation device 130. The activation device 130 is used to form at least a number of bubbles from the ozone dissolved in the water, and the activation device 130 is connected to a hot water pipe 300.

[0043] In the aforementioned gas water heater 100, when a skin-beautifying bath is desired, the water heater body 110 provides hot water to the activation device 130, and the generating device 120 provides ozone to the activation device 130, so that the activation device 130 contains an ozone-water solution containing dissolved ozone. At this time, the activation device 130 delivers the ozone water to the hot water pipe 300 for the user's bathing use. Since the activation device 130 can form at least a number of bubbles from the ozone dissolved in the water, the water flowing into the hot water pipe 300 contains ozone bubbles, activating its cleaning properties, allowing it to better penetrate the skin pores for deep cleaning, achieving deep skin rejuvenation, and enhancing the user's bathing experience.

[0044] It should be noted that the connection between the water heater body 110 and the generating device 120 and the activation device 130 can be direct or indirect. "Direct connection" means that the outlet of the water heater body 110 and the output of the generating device 120 are directly connected to the activation device 130. "Indirect connection" means that there is an intermediate device between the outlet of the water heater body 110 and the output of the generating device 120 and the activation device 130, allowing the hot water from the water heater body 110 and the ozone from the generating device 120 to enter the activation device 130. For example, the intermediate device can be, but is not limited to, a pipe or a container structure such as a cylinder or box with a certain cavity. When the intermediate device is a container structure such as a cylinder or box with a certain cavity, the ozone and water will be pre-mixed before entering the activation device 130 to form an ozone aqueous solution.

[0045] It should also be noted that the activation device 130's ability to form bubbles from dissolved ozone in water should be understood as not only being able to bubble ozone but also other gases dissolved in water. For example, it can also form bubbles from dissolved air. In this case, if device 120 is not activated, activation device 130 will bubble the dissolved air to achieve an oxygenation bath. Furthermore, the activation device 130 can have various structural designs, as long as it can achieve ozone bubble formation. For example, multiple small holes can be densely arranged in the activation device 130, similar to a bubbler structure; or, a small stirring impeller can be installed in the activation device 130 to agitate the bubbles; or, an air-blowing device can be built into the activation device 130 to agitate the bubbles in the ozone water, etc.

[0046] In addition, the generating device 120 may be, but is not limited to, a corona discharge ozonation air device, an electrolysis water device, etc.

[0047] Further, please refer to Figure 2The activation device 130 includes a housing 131 and an activation element 132 fitted inside the housing 131. A first port 1311 and a second port 1312 are spaced apart on the housing 131. The water outlet of the water heater body 110 and the generating device 120 are both connected to the first port 1311. The second port 1312 is used to connect to the hot water pipe 300. The activation element 132 is provided with flow channels 1321 that are respectively connected to the first port 1311 and the second port 1312. The flow channels 1321 are used to form at least a number of bubbles from ozone dissolved in water. Therefore, ozone entering through the first port 1311 reacts with water in the flow channels 1321 to form several bubbles, resulting in a better bathing effect. In this embodiment, the flow channel 1321 is cleverly utilized during aeration, avoiding the increased manufacturing costs caused by using complex aeration equipment. Meanwhile, the aeration design of the flow channel 1321 helps to reduce the space occupied in the water circuit and avoids affecting the water flow of the gas water heater 100 by adding the activation device 130 in the water circuit.

[0048] It should be noted that the flow channel 1321 can be designed as a straight channel structure with a small diameter; or it can be designed as a channel structure with an abrupt change in cross section, etc. When the flow channel 1321 is designed as a straight channel structure with a small diameter, the diameter of the flow channel 1321 must be smaller than the size of the opening 1442 of the first port 1311. In this case, the flow channel 1321 and the first port 1311 also form an abrupt change in cross section structure.

[0049] It should also be noted that, please refer to Figure 2 The activating element 132 is fitted inside the housing 131. One end of the activating element 132 should be set below the first port 1311, and the other end should be set above the second port 1312. That is, there is a certain gap between one end of the activating element 132 and the first port 1311, and a certain gap between the other end of the activating element 132 and the second port 1312. At the same time, the flow channel 1321 on the activating element 132 should be arranged such that one end faces the first port 1311 and the other end faces the second port 1312, and the flow channel 1321 extends along the direction from the first port 1311 to the second port 1312 on the activating element 132. Of course, it can also be understood that the flow channel 1321 extends through the activating element 132 along the axial direction of the activating element 132.

[0050] Furthermore, the smaller the bubbles formed by the flow channel 1321, the better the bathing and cleaning effect. For example, the flow channel 1321 can form microbubbles from ozone dissolved in water. Microbubbles are tiny bubbles with a diameter of less than 50 μm that are generated when bubbles are formed. At the same time, the more bubbles there are, the better the bathing experience.

[0051] Furthermore, please refer to Figure 2Along the direction from the first port 1311 to the second port 1312, the cross-sectional area S of the flow channel 1321 is designed to first decrease and then increase, meaning that there is a point in the flow channel 1321 where the cross-sectional area S is at its minimum, forming an overall or approximately Venturi tube structure. Thus, when ozone water flows through the flow channel 1321, it is compressed and contracted by the inner wall of the flow channel 1321. When it flows to the point where the cross-sectional area S is at its minimum, the pressure is at its maximum. Utilizing the principle of expansion releasing pressure, the ozone dissolved in the water bursts into tiny bubbles, allowing them to better penetrate into the skin pores for deep cleansing.

[0052] Alternatively, please refer to Figure 3 The cross-section of the flow channel 1321 can be designed as a circle, and the minimum aperture d of its cross-section can be designed as 0.5mm to 2.5mm.

[0053] In one embodiment, please refer to Figure 2 There are multiple flow channels 1321. Multiple flow channels 1321 are arranged side by side and spaced apart on the activator 132. In this way, the ozone water flowing into the housing 131 flows into multiple flow channels 1321 and bursts into multiple streams of bubble fluid under the action of multiple flow channels 1321, so as to further enhance the bathing effect.

[0054] In one embodiment, please refer to Figure 2 The inner wall of the housing 131 is provided with a step 1313. The step 1313 extends along the circumference of the housing 131. The activator 132 is sleeved inside the housing 131 and abuts against the step 1313, so that the activator 132 is stably installed inside the housing 131, ensuring that the ozone water can stably burst into several bubbles.

[0055] In one embodiment, please refer to Figure 1 The gas water heater 100 also includes a mixing device 140. The outlet of the water heater body 110 and the generating device 120 are both connected to the mixing device 140. The mixing device 140 is connected to the first port 1311. Therefore, before ozone and water enter the activation device 130, they are pre-mixed in the mixing device 140 to ensure thorough mixing and dissolution, thereby increasing the ozone concentration in the ozone water and meeting the ozone concentration requirements for a beauty bath, thus enhancing the user's bathing experience.

[0056] Optionally, the connection between the mixing device 140 and the first port 1311 can be, but is not limited to, threaded connection, welding, or socketing.

[0057] Further, please refer to Figure 4The mixing device 140 includes a chamber 141, a guide pipe 144, and a first connector 142 and a second connector 143 spaced apart and connected to the chamber 141. The first connector 142 is connected to the water outlet of the water heater body 110. The second connector 143 is connected to the generating device 120. The guide pipe 144 is located at the bottom of the chamber 141, with one end extending into the chamber 141 and above the position of the first connector 142 and the second connector 143. A guide hole 1441 is provided on the portion of the guide pipe 144 above the first connector 142 and the second connector 143. In this embodiment, setting one end of the guide pipe 144 above the first connector 142 and the second connector 143 can effectively prevent water and ozone that have just entered the chamber 141 from being immediately discharged from the guide hole 1441, prolonging the mixing time of the two in the chamber 141, which is beneficial to increasing the ozone content in the ozone water.

[0058] It should be noted that the flow guide hole 1441 can be located at one end of the flow guide pipe 144, or on the side of the flow guide pipe 144, i.e., on the pipe body. Furthermore, the number of flow guide holes 1441 can be one or more. When there are multiple flow guide holes 1441, the flow rate of ozone water into the activation device 130 can be accelerated.

[0059] Optionally, the first connector 142 and the second connector 143 can be installed on the cabin 141 by, but not limited to, threaded connection, snap-fit, riveting, welding, etc.

[0060] Furthermore, please refer to Figure 4 The second connector 143, located within the chamber 141, has at least two air inlets 1431. These air inlets 1431 are designed to be below the liquid level within the chamber 141, allowing the introduced ozone to enter the solution within the chamber 141 and facilitate its dissolution. Simultaneously, the presence of at least two air inlets 1431 on the second connector 143 increases the contact area and reaction time between the ozone and the liquid, accelerating the ozone dissolution rate and further increasing the ozone concentration in the hot water.

[0061] In one embodiment, please refer to Figure 4 The first connector 142 is provided with a water inlet 1421 on the part located inside the chamber 141. The water inlet 1421 is set towards the bottom of the chamber 141, so that the incoming water flows towards the bottom of the chamber 141, which has a stirring and strengthening effect on the solution inside the chamber 141, so as to further accelerate the ozone dissolution rate.

[0062] In one embodiment, please refer to Figure 4The guide pipe 144 has an opening 1442 at one end that extends into the chamber 141. The guide hole 1441 is located on the side of the guide pipe 144. The inner wall of the chamber 141 has a protruding sealing portion 1411. The sealing portion 1411 is used to close the opening 1442 to achieve end sealing of the guide pipe 144 and ensure that ozone water flows out stably from the guide hole 1441 on the side.

[0063] In one embodiment, please refer to Figure 1 The gas water heater 100 also includes a one-way valve 122. The one-way valve 122 is used to allow gas or liquid to flow unidirectionally from the generating device 120 to the mixing device 140, so as to prevent ozone water in the mixing device 140 from flowing back into the generating device 120.

[0064] In one embodiment, please refer to Figure 1 The gas water heater 100 also includes a detection probe 133. The detection probe 133 is used to detect the ozone concentration output by the activation device 130. In this way, the detection probe 133 can monitor the ozone concentration in the water in real time, so as to adjust the operating power of the generator 120 or control the opening and closing of the generator 120 in a timely manner, thereby meeting the concentration requirements of the beauty bath.

[0065] Further, please refer to Figure 2 The housing 131 has a mounting hole 1314. The mounting hole 1314 is located on the side of the activator 132 facing the second port 1312. The detection probe 133 is inserted into the mounting hole 1314 to detect the ozone concentration in the output water flow in the flow channel 1321.

[0066] In one embodiment, please refer to Figure 1 The gas water heater 100 also includes a water pump 111. The water pump 111 is used to provide power for water circulation in the water heater body 110. In this way, the water supply or circulation is achieved through the water pump 111, ensuring the stable operation of the gas water heater 100.

[0067] In one embodiment, please refer to Figure 1 The gas water heater 100 also includes a sensor 112. The sensor 112 is used to obtain the water inlet flow rate in the water heater body 110 so as to monitor the water inlet status in the water heater body 110.

[0068] In one embodiment, please refer to Figure 1The gas water heater 100 also includes an air pump 121. The air pump 121 is used to deliver compressed air to the generating device 120. Therefore, the generating device 120 in this embodiment is a corona discharge ozone oxidation air device. During preparation, compressed air is delivered to the generating device 120 via the air pump 121, allowing the generating device 120 to oxidize the air using corona discharge to obtain ozone. The air pump 121 can be a small air pump. Additionally, when the generating device 120 is not operating, the air pump 121 can input compressed air through the generating device 120 into the mixing device 140 to achieve an oxygen-enriched bathing mode.

[0069] In one embodiment, please refer to Figure 1 The gas water heater 100 also includes a display component 150 and a controller 160. The display component 150, the generating device 120, and the water heater body 110 are all connected to the controller 160. The display component 150 is used at least to control or adjust the generating device 120 and the water heater body 110, thereby realizing intelligent control of the gas water heater 100.

[0070] It should be noted that the display component 150 has the function of controlling the start and stop of various functions of the gas water heater 100, including the power switch, temperature setting, zero cold water, and beauty bath function buttons.

[0071] In one embodiment, please refer to Figure 1 and Figure 5 A control method for a gas-fired water heating system is disclosed. The gas-fired water heating system includes an inlet pipe 200, a hot water pipe 300, a cold water pipe 600, a water point 400, and a gas water heater 100 as described in any of the above embodiments. The inlet pipe 200 is connected to the water inlet end of the water heater body 110. The hot water pipe 300 is connected to an activation device 130. The cold water pipe 600 is connected to the inlet pipe 200. The water point 400 is connected between the hot water pipe 300 and the cold water pipe 600. A return pipe 500 is connected between the hot water pipe 300 and the inlet pipe 200, or a connecting pipe is connected between the cold water pipe 600 and the hot water pipe 300, to form a circulating water circuit.

[0072] Includes the following steps:

[0073] S100: Determine the operating mode of the gas-fired hot water system;

[0074] S200. If the operating mode is circulation mode, control the flow of water in the circulation water circuit and obtain the ozone concentration in the output water flow of the activation device 130.

[0075] S210. When the ozone concentration is below the critical concentration, start the generator 120 to make the ozone concentration higher than or equal to the critical concentration.

[0076] S300: If the operating mode is shower mode, control the water inlet pipe 200, water heater body 110, hot water pipe 300 and water point 400 to flow water in sequence, and obtain the ozone concentration in the water flow output by the activation device 130 and the shower water temperature input to the gas water heater 100.

[0077] S310. When the ozone concentration is lower than the critical concentration and the shower water temperature is lower than the preset water temperature, start the generator 120 to make the ozone concentration higher than or equal to the critical concentration.

[0078] The control method of the aforementioned gas-fired hot water system utilizes the gas-fired water heater 100. When a skin-beautifying bath is desired, the water heater body 110 provides hot water to the activation device 130, and the generating device 120 provides ozone to the activation device 130, resulting in an ozone-water solution containing dissolved ozone in the activation device 130. At this time, the activation device 130 delivers the ozone-water to the hot water pipe 300 for the user's bathing use. Since the activation device 130 can form at least a number of bubbles from the dissolved ozone in the water, the water flowing into the hot water pipe contains ozone bubbles, activating its cleaning properties and allowing it to better penetrate the skin pores for deep cleaning, achieving deep skin rejuvenation and enhancing the user's bathing experience. Furthermore, when controlling ozone generation, different ozone generation conditions are controlled according to different operating modes. For example, in circulation mode, if the ozone concentration is below the critical concentration, the generating device 120 is activated to raise the concentration to the critical concentration; in shower mode, if the ozone concentration is below the critical concentration and the shower water temperature is below the preset water temperature, the generating device 120 is activated. This makes ozone generation more compatible with different operating modes, thus making ozone generation control more reasonable and achieving economical and effective bathing results.

[0079] It should be noted that the gas water heater 100 operates in at least two modes: a circulation mode and a shower mode. The circulation mode can also be understood as a zero-cold-water mode. When the shut-off valve at water point 400 is not open, the residual water in the hot water pipe 300, the water heater body 110, and part of the inlet pipe 200 circulates in the circulation circuit to preheat and dissolve the residual water with ozone, thus simultaneously achieving the cold water function and the ozone skin-beautifying function. When the shut-off valve at water point 400 is open, the water flows sequentially through the inlet pipe 200, the water heater body 110, the hot water pipe 300, and the water point 400 to achieve normal showering. The water point 400 can be understood as the point where hot water is delivered or sprayed to the user, such as the location of the faucet or the showerhead.

[0080] In addition, the circulating water circuit has at least two structures: 1. It consists of a return pipe 500, in which water circulates through the inlet pipe 200, the water heater body 110, the hot water pipe 300, the return pipe 500, and the inlet pipe 200; 2. It consists of a connecting pipe, in which water circulates through the inlet pipe 200, the water heater body 110, the hot water pipe 300, the connecting pipe, the cold water pipe 600, and the inlet pipe 200. When a connecting pipe is used, a one-way valve 122 can be installed on the connecting pipe to prevent cold water from flowing back into the hot water pipe 300.

[0081] It should also be noted that in circulation mode, the preheating temperature is generally between 35℃ and 45℃, and this temperature range has little impact on the ozone solubility. Therefore, in this embodiment, only the ozone concentration in the output water flow of the activation device 130 is considered in circulation mode. The shower mode allows for temperature adjustment according to user needs; the water temperature can be high or low. Higher temperatures accelerate ozone decomposition. For example, above 50℃, ozone essentially decomposes into oxygen, and the decomposition rate of ozone in water increases with temperature. At normal pressure and 65℃, the solubility of ozone in water is 0.14 g / L. Therefore, in this embodiment, both ozone concentration and shower water temperature are considered in shower mode to comprehensively control the activation of the generator 120, avoiding activation of the generator 120 at high temperatures, which would result in poor ozone skin-beautifying effects and be uneconomical. The critical concentration can be selected from 0.35 mg / L to 0.45 mg / L, for example, a critical concentration of 0.4 mg / L. Meanwhile, the preset water temperature can be any value between 45℃ and 55℃, for example, the preset water temperature can be 50℃. Of course, the critical concentration and the preset water temperature can also be determined according to actual needs.

[0082] Further, please refer to Figure 1 and Figure 6 S210. After the step of starting the generator 120 when the ozone concentration is below the critical concentration, the method further includes:

[0083] S211. Calculate the first ozone production based on the circulating water flow rate in the circulating water circuit and the preheating time.

[0084] S212. Based on the initial ozone production amount, adjust the operating power of the generating device 120 to ensure that the ozone concentration is higher than or equal to the critical concentration. In this way, by calculating the initial ozone production amount, the operating power and operating time of the generating device 120 can be accurately controlled. While ensuring that the ozone concentration reaches the critical concentration, the production of additional ozone is minimized, thus avoiding excessive undissolved ozone from causing certain health effects on users.

[0085] It should be noted that in the calculation of the initial ozone production, the total volume of water in one cycle can be obtained based on the circulating water flow rate and the initial preheating time. Taking the critical concentration as an example, the product of the concentration difference obtained by subtracting the ozone concentration before the generator 120 is activated and the total volume of water in one cycle can be used to roughly calculate the total amount of ozone required for this bath. The initial preheating time refers to the time required for the water to circulate once in the circulating water circuit; its specific value can be calculated based on the total length of the circulating pipe and the water flow rate. In some gas water heaters 100, to achieve energy-saving preheating, the initial preheating time is usually built into the gas water heater 100; therefore, this initial preheating time can be directly retrieved and used through the controller 160.

[0086] Specifically, assuming the circulation pipeline is 30m long and the time to complete one zero-cold-water circulation is 7 minutes, the controller 160 calculates the required ozone concentration for the skin-beautifying bath to be 0.4mg / L based on the circulation flow rate monitored by the water flow sensor 112 (assuming 6L / min). Assuming the residual ozone concentration from the previous cycle is 0.29L / min, the controller 160 roughly calculates the required ozone amount to be 4.5mg. At this point, the controller 160 outputs a command to adjust the operating power of the generator 120, operating it at an ozone production rate of 54mg / h during the zero-cold-water circulation time, with a continuous production time of 5 minutes.

[0087] Of course, if water quality characteristics are taken into account, such as when the water heater is used in a particularly poor water quality environment, rich in metal ions and impurities, a compensation value can be set for the first ozone production amount mentioned above; alternatively, a proportional method can be used for estimation, such as: typically 1m 3 The water needs to be purged with 9g of ozone per hour, and the resulting ozone concentration must be ≥0.3mg / L.

[0088] In one embodiment, when the ozone concentration is greater than or equal to the critical concentration, it indicates that residual ozone water from the previous generation remains in the circulating water circuit, and the generating device 120 remains inactive. During circulation mode operation, the ozone water in the mixing device 140 is continuously diluted, and the detection probe 133 monitors a continuous decrease in ozone concentration. When the measured concentration of the ozone solution is below the critical concentration, the gas water heater 100 controls the air pump 121 and the generating device 120 to start working. The air pump 121 continuously compresses air and transmits it to the generating device 120, using corona discharge to generate ozonated air, so that the ozone concentration output by the activation device 130 reaches the critical concentration again.

[0089] In one embodiment, please refer to Figure 1 and Figure 7 S310. After the step of starting the generator 120 when the ozone concentration is below the critical concentration and the shower water temperature is below the preset water temperature, the method further includes:

[0090] S311. Calculate the second ozone production amount based on the water flow rate in the inlet pipe 200 and the shower time.

[0091] S312. Based on the second ozone production amount, adjust the operating power of the generating device 120 to ensure that the ozone concentration is higher than or equal to the critical concentration. In this way, by calculating the second ozone production amount, the operating power and operating time of the generating device 120 can be accurately controlled. While ensuring that the ozone concentration reaches the critical concentration, the production of additional ozone is minimized, avoiding excessive undissolved ozone from causing certain health effects on users.

[0092] It should be noted that in the calculation of the second ozone production, the total water volume of the shower circulation can be obtained based on the inlet water flow rate and shower time. Taking the critical concentration as an example, the product of the concentration difference obtained by subtracting the ozone concentration before the generator 120 is started and the total water volume of the shower circulation can be used to roughly calculate the total amount of ozone required for this shower.

[0093] Specifically, assuming a user's normal shower time is 20 minutes, the controller 160 calculates the required ozone concentration of 0.4 mg / L based on the inlet water flow rate monitored by the sensor 112 (assuming 10 L / min), and the residual ozone concentration from the previous shower (assuming 0.25 L / min), resulting in a total ozone requirement of approximately 30 mg. At this point, the controller 160 outputs a command to adjust the operating power of the ozone generator 120, operating it at an ozone production rate of 90 mg / h during the zero-cold-water circulation period, until the shower is completed and the water is turned off, or the water is turned off midway through the shower. The air pump 121 and the ozone generator 120 then stop or temporarily cease operation.

[0094] Of course, if water quality characteristics are taken into account, such as particularly poor water quality in the water heater's usage scenario, rich in metal ions and impurities, then a compensation value can be set for the aforementioned second ozone production amount; alternatively, a proportional method can be used for estimation, such as: typically 1m 3 The water needs to be purged with 9g of ozone per hour, and the resulting ozone concentration must be ≥0.3mg / L.

[0095] In one embodiment, when the initially detected ozone concentration is higher than or equal to the critical concentration, it indicates that the mixing device 140 contains residual ozone water from the previous generation, and the air pump 121 and ozone generator 120 remain inactive. As tap water enters the mixing device 140 for dilution, the detection probe 133 continues to detect. When the ozone concentration drops below the critical concentration, the air pump 121 and ozone generator 120 are activated to produce ozone. When the ozone concentration is again detected to be higher than or equal to the critical concentration, and the water flow signal continues, the current ozone production rate is maintained until the water is turned off after bathing or during the bath, at which point the controller 160 transmits a command to stop the air pump 121 and ozone generator 120 from operating.

[0096] In one embodiment, please refer to Figure 1 and Figure 8 S300, if the operating mode is shower mode, the steps of controlling the water inlet pipe 200, water heater body 110, hot water pipe 300 and water point 400 to sequentially supply water, and obtaining the ozone concentration in the water flow output by the activation device 130 and the shower water temperature input to the gas water heater 100, further include:

[0097] S320. When the ozone concentration is below the critical concentration and the shower water temperature is higher than or equal to the preset water temperature, the air pump 121 is started and the ozone generator 120 is kept in a stopped state. Therefore, when hot water is detected as being turned on and the shower water temperature is higher than or equal to the preset water temperature (e.g., 50℃), the beauty bath mode switches to the oxygen-enriched shower mode. The controller 160 controls the air pump 121 to start running while the ozone generator 120 remains off. Air is continuously compressed and enters the mixing device 140, where it is thoroughly mixed with water to form oxygen-enriched water. This water flows to the activation device 130, where it is accelerated and the oxygen bursts to form microbubbles for deep cleaning.

[0098] It should be noted that in step S320, the water inlet status in the water heater body 110 can be monitored by sensor 112 to determine whether there is a continuous water flow signal in the gas water heater 100. If there is no water flow signal, the gas pump 121 and the generating device 120 are stopped.

[0099] In one specific embodiment, to facilitate understanding of the working principle of ozone generation control in circulation mode and shower mode, an example with a critical concentration of 0.4 mg / L and a preset water temperature of 50°C will be used for illustration:

[0100] The working principle of the ozone generation system in circulation mode, such as Figure 9 As shown,

[0101] When the gas water heater 100 is in standby mode, the zero-cold-water function and the beauty bath function are activated via the display component 150 interface. The gas water heater 100 controls the water stored in the circulating water circuit to be drawn back into the water heater body 110 for heating. When the water stored in the circulating water circuit is circulating, the sensor 112 monitors the current circulation flow rate in the circulating water circuit, and the detection probe 133 monitors the current concentration of the ozone solution being accelerated and released from the activation device 130.

[0102] If the ozone concentration measured by probe 133 in the initial stage of the cycle is greater than or equal to the critical concentration value C 临界 =0.4mg / L, indicating that the mixing device 140 still contains residual ozone water from the previous generation. The air pump 121 and the generator 120 remain inactive. During the zero-cold-water circulation phase, the ozone water in the mixing device 140 is continuously diluted, and the ozone detection probe 133 monitors a continuous decrease in ozone concentration. When the measured ozone concentration is less than the set critical concentration value C... 临界=0.4mg / L, then the gas water heater 100 controls the gas pump 121 and the generator 120 to start working.

[0103] The working principle of ozone generation in shower mode, such as Figure 10 As shown,

[0104] 1) Ozone Shower Mode: With the gas water heater 100 in standby mode, activate the beauty shower function via the display component 150 interface by opening the outlet valve (cold or hot water) of the gas water heater 100. When the controller 160 recognizes that cold or hot water is turned on and the preset water temperature is ≤50℃, the beauty shower mode switches to "O3" ozone shower mode. Sensor 112 monitors the water flow signal after startup. If a continuous water flow signal is detected, the controller 160 controls the detection probe 133 to detect the ozone concentration after passing through the activation device 130. If the initial ozone concentration measured by the detection probe 133 is ≥ the set critical concentration value C... 临界 =0.4mg / L, indicating that residual ozone water from the previous generation remains in the gas-liquid mixing device 140. The gas pump 121 and generator 120 remain inactive. Tap water is introduced into the mixing device 140 for dilution, and the detection probe 133 continuously monitors the concentration until it decreases to below the set critical concentration value C. 临界 If the concentration is 0.4 mg / L, the gas water heater 100 controls the air pump 121 to start working, compressing air to the generator 120 to produce ozone. When the ozone concentration is detected again to be ≥ the set critical concentration value C... 临界 =0.4mg / L, and the water flow signal is continuous, then the current ozone production rate will be maintained until the water is turned off after bathing or during the bath. The controller 160 will then transmit a command to control the air pump 121 and the generating device 120 to stop operating.

[0105] 2) Oxygenated Shower Mode: With the gas water heater 100 in standby mode, the "Beauty Bath" function is activated via the display component 150 interface by opening the outlet valve (hot water) of the gas water heater 100. When the controller 160 recognizes that hot water is on and the preset water temperature is >50℃, the Beauty Bath mode switches to the "O2" oxygenated shower mode. The sensor 112 monitors the water flow signal after startup. If a continuous water flow signal is detected, the controller 160 controls the air pump 121 to start running while the generator 120 remains inactive.

[0106] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0107] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0108] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0109] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0110] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A gas water heater, characterized in that, The gas water heater (100) includes: Water heater body (110); Ozone generator (120) for preparing and containing ozone; An activation device (130) is provided, wherein the outlet end of the water heater body (110) and the generating device (120) are both connected to the activation device (130). The activation device (130) is used to generate at least a number of bubbles from ozone dissolved in water. The activation device (130) is connected to a hot water pipe (300). The activation device (130) includes a housing (131) and an activation element (132) fitted inside the housing (131). The housing (131) has an upper... The device is provided with a first port (1311) and a second port (1312) separated by a partition. The activator (132) is provided with a flow channel (1321) that communicates with the first port (1311) and the second port (1312) respectively. The flow channel (1321) is used to form at least a number of bubbles from ozone dissolved in water. Along the direction from the first port (1311) to the second port (1312), the cross-sectional area S of the flow channel (1321) is set to first decrease and then increase. It also includes a mixing device (140), the water outlet of the water heater body (110) and the generating device (120) are both connected to the mixing device (140), the mixing device (140) is connected to the first port (1311), the mixing device (140) includes a chamber (141), a guide pipe (144) and a first connector (142) and a second connector (143) spaced apart and connected to the chamber (141), the first connector (142) is connected to the water outlet of the water heater body (110), the second connector (143) is connected to the generating device (120), the guide pipe (144) is located at the bottom of the chamber (141), and one end extends into the chamber (141) and is higher than the position of the first connector (142) and the second connector (143); The first connector (142) and the second connector (143) are distributed at intervals around the outer periphery of the guide tube (144), and the guide tube (144) is provided with a guide hole (1441) on the part of the guide tube (144) that is higher than the first connector (142) and the second connector (143).

2. The gas water heater according to claim 1, characterized in that, The water outlet of the water heater body (110) and the generating device (120) are both connected to the first port (1311), and the second port (1312) is used to connect to the hot water pipe (300).

3. The gas water heater according to claim 1, characterized in that, There are multiple flow channels (1321), and the multiple flow channels (1321) are arranged side by side and spaced apart on the activator (132).

4. The gas water heater according to claim 1, characterized in that, The first connector (142) has a water inlet (1421) on the portion inside the cabin (141), and the water inlet (1421) is located towards the bottom of the cabin (141).

5. The gas water heater according to claim 1, characterized in that, The second connector (143) is provided with at least two air inlets (1431) on the portion located inside the chamber (141), the air inlets (1431) being used to set the liquid level below that inside the chamber (141).

6. The gas water heater according to claim 1, characterized in that, The gas water heater (100) also includes a one-way valve (122) for allowing gas or liquid to flow unidirectionally from the generating device (120) to the mixing device (140).

7. The gas water heater according to any one of claims 1-6, characterized in that, The gas water heater (100) also includes a detection probe (133) for detecting the ozone concentration output by the activation device (130).

8. The gas water heater according to any one of claims 1-6, characterized in that, The gas water heater (100) further includes a water pump (111) for providing power for water circulation in the water heater body (110); and / or, The gas water heater (100) further includes a sensor (112) for acquiring the inlet water flow rate in the water heater body (110); and / or, The gas water heater (100) also includes an air pump (121) for delivering compressed air to the generating device (120).

9. The gas water heater according to any one of claims 1-6, characterized in that, The gas water heater (100) also includes a display component (150) and a controller (160). The display component (150), the generating device (120) and the water heater body (110) are all connected to the controller (160). The display component (150) is used at least to control or adjust the generating device (120) and the water heater body (110).

10. A control method for a gas-fired hot water system, the gas-fired hot water system comprising an inlet pipe (200), a hot water pipe (300), a cold water pipe (600), a water point (400), and a gas water heater (100) as described in any one of claims 1-9, wherein the inlet pipe (200) is connected to the inlet end of the water heater body (110), the hot water pipe (300) is connected to the activation device (130), the cold water pipe (600) is connected to the inlet pipe (200), and the water point (400) is connected between the hot water pipe (300) and the cold water pipe (600); a return pipe (500) is connected between the hot water pipe (300) and the inlet pipe (200), or a connecting pipe is connected between the cold water pipe (600) and the hot water pipe (300) to form a circulating water circuit; Its features are, Includes the following steps: Determine the operating mode of the gas-fired hot water system; If the operating mode is the circulation mode, control the flow of water in the circulation water circuit and obtain the ozone concentration in the output water of the activation device (130); When the ozone concentration is below the critical concentration, the generating device (120) is activated to make the ozone concentration higher than or equal to the critical concentration; If the operating mode is shower mode, the water inlet pipe (200), the water heater body (110), the hot water pipe (300) and the water point (400) are controlled to flow water in sequence, and the ozone concentration in the water flow output by the activation device (130) and the shower water temperature input by the gas water heater (100) are obtained. When the ozone concentration is below the critical concentration and the shower water temperature is below the preset water temperature, the generating device (120) is activated so that the ozone concentration is higher than or equal to the critical concentration.

11. The control method for a gas-fired hot water system according to claim 10, characterized in that, After the step of activating the generating device (120) when the ozone concentration is below the critical concentration, the method further includes: Based on the circulating water flow rate in the circulating water circuit and the preheating time, the first ozone production amount is estimated. Based on the first ozone production amount, the operating power of the generating device (120) is adjusted so that the ozone concentration is higher than or equal to the critical concentration.

12. The control method for a gas-fired hot water system according to claim 10, characterized in that, After the step of activating the generator (120) when the ozone concentration is below the critical concentration and the shower water temperature is below the preset water temperature, the method further includes: The second ozone production amount is estimated based on the water flow rate in the inlet pipe (200) and the shower time. The operating power of the generating device (120) is adjusted according to the second ozone production amount so that the ozone concentration is higher than or equal to the critical concentration.

13. The control method for a gas-fired hot water system according to claim 10, characterized in that, If the operating mode is shower mode, the steps of controlling the water inlet pipe (200), the water heater body (110), the hot water pipe (300), and the water point (400) to flow water sequentially, and obtaining the ozone concentration in the water flow output by the activation device (130) and the shower water temperature input to the gas water heater (100) further include: When the ozone concentration is below the critical concentration and the shower water temperature is higher than or equal to the preset water temperature, the air pump (121) is started and the generating device (120) is controlled to remain in a stopped state.

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