CN114440467A - Operation method of micro-bubble water heater - Google Patents
Operation method of micro-bubble water heater Download PDFInfo
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- CN114440467A CN114440467A CN202210076973.8A CN202210076973A CN114440467A CN 114440467 A CN114440467 A CN 114440467A CN 202210076973 A CN202210076973 A CN 202210076973A CN 114440467 A CN114440467 A CN 114440467A
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- water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses an operation method of a microbubble water heater, which comprises a water heater main body; the water heater main body comprises a cold water inlet pipe, a hot water outlet pipe, an electronic control substrate and a heating module; the heating module is respectively connected with a cold water inlet pipe and a hot water outlet pipe, and is used for heating cold water input by the cold water inlet pipe into hot water and outputting the hot water through the hot water outlet pipe; the hot water outlet pipe is provided with a micro bubble water generating device which can switch between common hot water and micro bubble hot water; the hot water outlet pipe is provided with a micro bubble water generating device which can switch between common hot water and micro bubble hot water; the cold water inlet pipe is provided with a micro-bubble hot water outlet control device. When the micro-bubble water generator is used, the electronic control substrate controls the micro-bubble water generator and the water outlet control device to work according to the setting of an operator. The invention realizes the combination of the nanometer micro-bubble water generating device and the water heater through the micro-bubble water generating device and the water outlet control device, and realizes the daily use of the nanometer micro-bubble water.
Description
Technical Field
The invention relates to the technical field of water heater manufacturing, in particular to an operation method of a microbubble water heater.
Background
The water heater is a common daily water heating device, water can be used for bathing or cleaning articles after being heated, but most of the existing water heaters only perform the function of heating the water, and the function is single.
The nanometer micro-bubble water is also called micro-bubble water or small-bubble water, and because the characteristics of the nanometer micro-bubble water can sterilize, deeply clean and the like, the cleaning effect is superior to that of common water and cleaning products, so the nanometer micro-bubble water is widely applied to various occasions for cleaning by using water.
Therefore, the nanometer micro-bubble water is applied to daily cleaning and is combined with a water heater to become a new trend in the field.
However, the existing nano micro bubble water is produced by locally generating high pressure to the water body to force the dissolved air amount of the water body to rise, so the state of the nano micro bubble water is not very stable, particularly when bathing or cleaning daily necessities, the water body needs to be heated, and the cleaning water is usually in a slow flowing state, so that the bubbles in the nano micro bubble water are easily separated out from the water body, and the effects of sterilization, deep cleaning and the like are lost.
The existing nanometer micro-bubble water generating device has some defects for daily use, and the existing nanometer micro-bubble water generating device mainly has two types, one is that air is pressed into a water body through an air pump, and high pressure is produced at the local part of the water body by utilizing the characteristic that water can not be compressed, so that a large amount of air is dissolved into the water body to form nanometer micro-bubble water; and the second method is to suck air through the flow of the water body, and then break up larger air bubbles in the water body through a special micro-bubble water outlet device to be dissolved into the water body to form nano micro-bubble water.
In practical application, the first generation device needs a high-power air pump to press air into the water body, so that the equipment has a large volume, and the power consumption and the noise are very high during operation. The second method has very strict requirements on water pressure and higher production cost.
Therefore, how to combine the nanometer micro-bubble water generating device with the water heater becomes a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above defects in the prior art, the present invention provides an operation method of a microbubble water heater, which aims to realize the combination of a nanometer microbubble water generating device and the water heater and realize the daily use of nanometer microbubble water.
In order to achieve the purpose, the invention discloses a microbubble water heater, which comprises a water heater main body; the water heater main body comprises a cold water inlet pipe, a hot water outlet pipe, an electronic control substrate and a heating module; the heating module is respectively connected with the cold water inlet pipe and the hot water outlet pipe, and heats cold water input by the cold water inlet pipe into hot water, and then the hot water is output through the hot water outlet pipe.
Wherein, the hot water outlet pipe is provided with a micro-bubble water generating device which can switch between common hot water and micro-bubble hot water;
the cold water inlet pipe is provided with a water outlet control device for controlling the micro-bubble hot water to flow out.
Preferably, the micro-bubble water generating device comprises a water pump, a dissolved air tank and an aeration device;
the water pump, the dissolved air tank and the aeration device are sequentially connected with the hot water outlet pipe;
the hot water outlet pipe is connected with an upstream pipeline at the connecting position of the water pump in parallel with a gas-liquid mixing bypass;
the gas-liquid mixing bypass is connected with the hot water outlet pipe through an adjustable three-way valve;
the gas-liquid mixing bypass is sequentially provided with a nozzle and a one-way air inlet valve;
the water inlet of the nozzle is connected with the adjustable three-way valve through a pipeline, and the water outlet of the nozzle is connected with the position where the hot water outlet pipe is connected with the water pump through a pipeline;
the pipeline between the water outlet of the nozzle and the water outlet pipe is provided with the one-way air inlet valve;
the one-way air inlet valve comprises a one-way valve and an electromagnetic valve which are connected in sequence, the air inlet end is suspended and used for sucking air from the atmosphere, and the air outlet end is connected with a pipeline between the water outlet of the nozzle and the water outlet pipe.
More preferably, the pipeline between the dissolved air tank and the aeration device is connected with a common hot water outlet of the shower through a second adjustable three-way valve;
the aeration device, the common hot water outlet and the second adjustable three-way valve form an adjustable shower head.
More preferably, the dissolved air tank is provided with a water inlet and a water outlet, the water inlet is connected with the water outlet of the water pump, and an exhaust port extending vertically and upwards is arranged at the upper end of the dissolved air tank close to the center; an exhaust valve is arranged on the exhaust port;
the water inlet is horizontally arranged and is positioned on the side wall of the dissolved air tank close to the bottom;
the water outlet is arranged at the bottom of the gas dissolving tank, is symmetrical with the water inlet relative to the center of the bottom of the gas dissolving tank, and extends downwards along the vertical direction;
a water inlet baffle is arranged at a position close to the water inlet, a water outlet baffle is arranged at a position close to the water outlet, and an exhaust rectification baffle is arranged at one side of the exhaust port close to the water inlet;
the water inlet baffle is arranged on an extension line of the axis of the water inlet;
the water outlet baffle is arranged on an extension line of a central line of a channel formed by the water inlet baffle and the bottom of the dissolved air tank.
More preferably, the arc-shaped plate is arranged at one end, close to the water inlet, of the water inlet baffle;
the arc-shaped plate extends towards the direction of the exhaust port, protrudes towards one side of the side wall of the gas dissolving tank and is spaced from the side wall of the gas dissolving tank;
one end of the water outlet baffle, which is close to the water inlet, is provided with an inclined plane extending upwards; the height of the inclined plane is greater than the thickness of the water outlet baffle plate;
the exhaust rectification baffle is arc-shaped plate-shaped and surrounds the range of the 180-degree central angle corresponding to one side of the exhaust port close to the water inlet.
Preferably, the water outlet control device comprises a water inlet servo valve and a water quantity sensor;
the water inlet servo valve and the water quantity sensor are both arranged on a cold water inlet pipe and are both connected with the electronic control substrate;
the electronic control substrate comprises a main control chip and a water quantity servo valve driving module;
the water quantity servo valve driving module is connected with the water inlet servo valve and controls the water inlet servo valve to be opened and closed;
the main control chip is respectively connected with the operation part, the water quantity sensor, the water quantity servo valve driving module and the loudspeaker;
according to the comparison result between the data set by the operator in the operation part and the data collected by the water quantity sensor, the main control chip controls the opening and closing of the water inlet servo valve through the water quantity servo valve driving module.
More preferably, the water outlet control device further comprises a loudspeaker; the loudspeaker is connected with the main control chip;
when the main control chip opens the water inlet servo valve, the water injection process is broadcasted to a user through the loudspeaker in a voice mode;
the speaker is provided in the operation unit.
More preferably, the operation unit is provided on a panel of the water heater main body; the main control chip is internally integrated with a timer, and the main control chip carries out intermittent water injection according to the time set by the timer.
More preferably, the electronic control substrate is respectively connected with the water pump driving module and the current collecting module;
the water pump driving module is used for driving the water pump;
the current acquisition module is used for acquiring the running current of the water pump when the water pump driving module drives the water pump, calculating the running power of the water pump according to the current and then feeding the running power back to the electronic control substrate;
and the electronic control substrate compares the running power with a preset power upper limit value, reduces the opening of the water inlet servo valve by 20% when the running power is greater than the preset power upper limit value, and compares the running power with the preset value again after waiting for 2 seconds.
The invention also provides an operation method of the microbubble water heater, which comprises the following steps:
step 4, the electronic control substrate detects whether the power reaches a preset upper limit value; if so, reducing the opening of the water inlet servo valve by 20%, waiting for 2 seconds, and then re-entering the step, otherwise, executing the subsequent steps;
step 5, the electronic control substrate detects whether the power reaches a preset lower limit value; if yes, returning to execute the step 3, otherwise, executing the subsequent steps;
step 6, recording the flow of the output hot water as a flow Q1 before switching by the electronic control substrate; then, switching to a supercharging mode; then executing the subsequent steps;
the supercharging mode is that the electronic control substrate controls the water pump to enter a low-power running state and closes an electromagnetic valve in the one-way air inlet valve;
step 7, the electronic control substrate detects the flow rate of the hot water which is currently output, and compares the flow rate of the hot water which is currently output with the flow rate Q1 before switching; when the currently output flow rate of the hot water is less than or equal to half of the pre-switching flow rate Q1, returning to execute the step 3; otherwise this step is kept running.
The power of the water pump entering the low-power operation state is below 120w, and the power of the water pump entering the microbubble function operation is above 350 w.
The invention has the beneficial effects that:
the invention realizes the combination of the nanometer micro-bubble water generating device and the water heater through the micro-bubble water generating device and the water outlet control device, and realizes the daily use of the nanometer micro-bubble water.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram illustrating an open state of the micro-bubble water generating device according to an embodiment of the present invention.
FIG. 3 is a schematic structural diagram illustrating a closed state of the micro-bubble water generator according to an embodiment of the present invention.
Fig. 4 shows a schematic view of the structure of a dissolved air tank in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a water outlet control device according to an embodiment of the invention.
Fig. 6 shows a flow chart of the operation of collecting the operation power of the water pump and controlling the water inlet servo valve by the electronic control substrate according to an embodiment of the present invention.
FIG. 7 is a flow chart illustrating the operation of the present invention to execute micro-bubble water in accordance with one embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1, the microbubble water heater comprises a water heater main body 1; the water heater main body 1 comprises a cold water inlet pipe 11, a hot water outlet pipe 12, an electronic control substrate 13 and a heating module 15; the heating module 15 is connected to the cold water inlet pipe 11 and the hot water outlet pipe 12, respectively, and heats cold water input from the cold water inlet pipe 11 into hot water, and outputs the hot water through the hot water outlet pipe 12.
Wherein, the hot water outlet pipe 12 is provided with a micro bubble water generating device 2 which can switch between common hot water and micro bubble hot water;
the cold water inlet pipe 11 is provided with a water outlet control device 14 for controlling the micro-bubble hot water to be discharged.
The invention realizes the combination of the nanometer micro-bubble water generating device and the water heater through the micro-bubble water generating device 2 and the water outlet control device 14, and realizes the daily use of the nanometer micro-bubble water.
As shown in fig. 2 and 3, in some embodiments, the micro-bubble water generating device 2 includes a water pump 25, a dissolved air tank 26, and an aeration device 31;
the water pump 25, the dissolved air tank 6 and the aeration device 31 are sequentially connected with the hot water outlet pipe 12;
the upstream pipeline of the connecting position of the hot water outlet pipe 12 and the water pump 25 is connected with a gas-liquid mixing bypass in parallel;
the gas-liquid mixing bypass is connected with the hot water outlet pipe 12 through an adjustable three-way valve 22;
a nozzle 23 and a one-way air inlet valve 24 are sequentially arranged on the gas-liquid mixing bypass;
the water inlet of the nozzle 23 is connected with the adjustable three-way valve 22 through a pipeline, and the water outlet is connected with the position of the hot water outlet pipe 12 connected with the water pump 25 through a pipeline;
a one-way air inlet valve 24 is arranged on a pipeline between the water outlet of the nozzle 23 and the water outlet pipe;
the one-way air inlet valve 24 comprises a one-way valve and an electromagnetic valve which are connected in sequence, the air inlet end is suspended and used for sucking air from the atmosphere, and the air outlet end is connected with a pipeline from the water outlet of the nozzle 23 to the water outlet pipe.
In some embodiments, the line between the tank 26 and the aerator 31 is connected to the common hot water outlet 32 of the shower by a second adjustable three-way valve;
the aeration device 31, the common hot water outlet 32 and a second adjustable three-way valve form an adjustable shower head 3.
In practical application, when nano micro bubble water is produced, the specific flow is as follows:
the hot water outlet pipe 12 outputs common hot water, the adjustable three-way valve 22 is adjusted to a gas-liquid mixing bypass, a one-way air inlet valve 24 on the gas-liquid mixing bypass is opened, air and the common hot water are mixed for the first time in a pipeline between the one-way air inlet valve 24 and the water pump 25, then enter the water pump 25, are mixed for the second time in the water pump 25, and finally enter the dissolved air tank 26 to be fully mixed, so that a large amount of air is dissolved in the common hot water to generate nano micro-bubble hot water.
When the nano micro bubble water is not needed, the gas-liquid mixing bypass is closed by adjusting the adjustable three-way valve 22, so that the hot water outlet pipe 12 is directly connected with the water pump 25, and the one-way air inlet valve 24 is closed through the electromagnetic valve; at the moment, the water pump 25 operates under the conditions of low power and medium rotating speed, and the high lift generated when the water pump 25 operates is used for meeting the normal use of the water heater.
As shown in fig. 4, in some embodiments, the dissolved air tank 26 is provided with a water inlet 261 and a water outlet 262, the water inlet 261 is connected with the water outlet of the water pump 25, and the upper end of the dissolved air tank 26 near the center is provided with a vertically upward extending exhaust port 263; the exhaust port 263 is provided with an exhaust valve 27;
the water inlet 261 is horizontally arranged and is positioned on the side wall of the dissolved air tank 26 close to the bottom;
the water outlet 262 is arranged at the bottom of the dissolved air tank 26, is symmetrical with the water inlet 261 relative to the center of the bottom of the dissolved air tank 26, and extends downwards along the vertical direction;
in the dissolved air tank 26, a water inlet baffle 264 is arranged at a position close to the water inlet 261, a water outlet baffle 265 is arranged at a position close to the water outlet 262, and an exhaust rectification baffle 266 is arranged at one side of the exhaust port 263 close to the water inlet 261;
the water inlet baffle 264 is arranged on an extension line of the axis of the water inlet 261;
the water outlet baffle 265 is provided on an extension of a center line of a passage formed between the water inlet baffle 264 and the bottom of the dissolved air tank 26.
In some embodiments, the end of inlet baffle 264 closer to inlet 261 is provided with an arcuate plate;
the arc-shaped plate extends towards the exhaust port 263, protrudes towards one side of the side wall of the dissolved air tank 26 and is spaced from the side wall of the dissolved air tank 26;
one end of the water outlet baffle 265 close to the water inlet 261 is provided with an inclined plane extending upwards; the height of the inclined plane is greater than the thickness of the water outlet baffle 265;
the exhaust rectifying baffle 266 is in the shape of an arc plate, and surrounds the range of 180 degrees of central angle at the side of the exhaust port 263 close to the water inlet 1.
As shown in FIG. 5, in some embodiments, the outlet control 14 includes an inlet servo valve and a water volume sensor;
the water inlet servo valve and the water quantity sensor are both arranged on the cold water inlet pipe 11 and are both connected with the electronic control substrate 13;
the electronic control substrate 13 comprises a main control chip and a water quantity servo valve driving module;
the water quantity servo valve driving module is connected with the water inlet servo valve and controls the opening and closing of the water inlet servo valve;
the main control chip is respectively connected with the operation part, the water quantity sensor, the water quantity servo valve driving module and the loudspeaker;
according to the comparison result between the data set by the operator in the operation part and the data collected by the water quantity sensor, the main control chip controls the water inlet servo valve to be opened and closed through the water quantity servo valve driving module.
In some embodiments, the effluent control apparatus 14 further comprises a speaker; the loudspeaker is connected with the main control chip;
when the main control chip opens the water inlet servo valve, the water injection process is broadcasted to the user through a loudspeaker in a voice mode;
the speaker is provided in the operation unit.
In some embodiments, the operation portion is provided on a panel of the water heater main body 1; the master control chip is internally integrated with a timer and carries out intermittent water injection according to the time set by the timer.
In practical application, the operation part is provided with a key and a display screen, so that the water injection function of nanometer microbubble hot water can be selected, and the continuous water injection quantity is set.
After the settlement is accomplished, just can directly turn on the water, water yield sensor gathers flow data and sends for main control chip, and main control chip calculates the accumulative volume of turning on the water, when the accumulative volume of turning on the water reaches the continuous water injection of settlement and rises the number, through speaker voice broadcast 1 time: the continuous water injection is completed, meanwhile, the main control chip controls the water quantity servo valve to close for 2 minutes, water injection is carried out for 1 minute, circulation is carried out for 5 times, and the intermittent water injection time is 15 minutes in total. The time is obtained by the calculation of a timer in the main control chip.
After the intermittent water injection is completed within 15 minutes, the loudspeaker broadcasts voice that the intermittent water injection is completed, and simultaneously broadcasts voice to remind a user to close a bathtub faucet in time.
As shown in fig. 6, in some embodiments, the electronic control substrate 13 is connected to the water pump driving module and the current collecting module respectively;
the water pump driving module is used for driving the water pump 25;
the current acquisition module is used for acquiring the running current of the water pump 25 when the water pump driving module drives the water pump 25, calculating the running power of the water pump 25 according to the current and then feeding the running power back to the electronic control substrate 13;
the electronic control substrate 13 compares the operation power with a preset power upper limit value, reduces the opening of the water inlet servo valve by 20% when the operation power is larger than the preset power upper limit value, and compares the operation power with the preset value again after waiting for 2 seconds.
As shown in fig. 7, the present invention further provides an operation method of the microbubble water heater, which includes the following steps:
step 4, the electronic control substrate detects whether the power of the water pump 25 reaches a preset upper limit value; if so, reducing the opening of the water inlet servo valve by 20%, waiting for 2 seconds, and then re-entering the step, otherwise, executing the subsequent steps;
step 5, the electronic control substrate 13 detects whether the power of the water pump 25 reaches a preset lower limit value; if yes, returning to execute the step 3, otherwise, executing the subsequent steps;
step 6, the electronic control substrate 13 records the flow rate of the output hot water as the flow rate Q1 before switching; then, switching to a supercharging mode; then executing the subsequent steps;
the supercharging mode is that the electronic control substrate 13 controls the water pump 25 to enter a low-power running state and closes the electromagnetic valve in the one-way air inlet valve 24;
step 7, the electronic control substrate 13 detects the flow rate of the currently output hot water, and compares the current flow rate of the currently output hot water with the pre-switching flow rate Q1; when the flow rate of the currently output hot water is less than or equal to half of the flow rate Q1 before switching, returning to execute the step 3; otherwise, the operation of the step is kept.
The power of the water pump entering the low-power operation state is below 120w, and the power of the water pump entering the microbubble function operation is above 350 w.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (1)
1. The operation method of the microbubble water heater comprises the following steps:
step 1, after starting up, the electronic control substrate (13) checks whether a user starts the micro-bubble function; after the user starts the micro-bubble function, executing the subsequent steps;
step 2, the electronic control substrate (13) detects whether hot water is output or not through a water quantity sensor; executing subsequent steps when it is detected that the hot water is output;
step 3, opening the device to be in a micro-bubble mode, controlling an adjustable three-way valve (22) to be communicated with a gas-liquid mixing bypass by the electronic control substrate (13), opening an electromagnetic valve in a one-way air inlet valve (24), and opening a water pump (25) to supply water to the aeration device (31); then executing the subsequent steps;
step 4, the electronic control substrate (13) detects whether the power of the water pump (25) reaches a preset upper limit value; if so, reducing the opening of the water inlet servo valve by 20%, waiting for 2 seconds, then entering the step again, and if not, executing the subsequent steps;
step 5, the electronic control substrate (13) detects whether the power of the water pump (25) reaches a preset lower limit value; if yes, repeating the step 3, otherwise, executing the subsequent steps;
step 6, recording the flow rate of the output hot water as a pre-switching flow rate Q1 by the electronic control substrate (13); then, switching to a supercharging mode; then executing the subsequent steps;
the supercharging mode is that the electronic control substrate (13) controls the water pump (25) to enter a low-power running state and closes an electromagnetic valve in the one-way air inlet valve (24);
step 7, the electronic control substrate (13) detects the flow rate of the hot water which is currently output, and compares the flow rate of the hot water which is currently output with the flow rate Q1 before switching; when the currently output flow of the hot water is less than or equal to half of the pre-switching flow Q1, returning to execute the step 3; otherwise, the operation of the step is kept.
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| CN202210076973.8A CN114440467B (en) | 2020-12-14 | 2020-12-14 | Operation method of microbubble water heater |
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| CN202011466494.4A CN112556203B (en) | 2020-12-14 | 2020-12-14 | Micro-bubble water heater |
| CN202210076973.8A CN114440467B (en) | 2020-12-14 | 2020-12-14 | Operation method of microbubble water heater |
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| CN114288882B (en) * | 2021-12-06 | 2023-05-05 | 广东万家乐燃气具有限公司 | Double-tank circulating type micro-bubble generating device and water heater |
| CN116242021A (en) * | 2021-12-08 | 2023-06-09 | 芜湖美的厨卫电器制造有限公司 | Quick-heating electric water heater and control method thereof |
| CN114322299B (en) * | 2021-12-08 | 2023-08-11 | 华帝股份有限公司 | Control method of gas water heater |
| CN114288884B (en) * | 2021-12-14 | 2022-12-09 | 广东万家乐燃气具有限公司 | Microbubble generating device with gas storage chamber and water heater |
| CN114251851A (en) * | 2021-12-20 | 2022-03-29 | 广东万家乐燃气具有限公司 | Water heater with micro-nano bubble water function |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112556203A (en) | 2021-03-26 |
| CN114440467B (en) | 2023-10-20 |
| CN112556203B (en) | 2022-07-05 |
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