CN111217420A - Sterilization control method for zero-cold water system of water heater - Google Patents
Sterilization control method for zero-cold water system of water heater Download PDFInfo
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- CN111217420A CN111217420A CN201811426846.6A CN201811426846A CN111217420A CN 111217420 A CN111217420 A CN 111217420A CN 201811426846 A CN201811426846 A CN 201811426846A CN 111217420 A CN111217420 A CN 111217420A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 271
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 126
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000008859 change Effects 0.000 claims abstract description 19
- 230000001276 controlling effect Effects 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 230000003068 static effect Effects 0.000 claims description 57
- 239000000498 cooling water Substances 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 abstract description 53
- 238000001514 detection method Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000001580 bacterial effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000003287 bathing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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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
- F24H9/0005—Details 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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Abstract
The invention belongs to the field of water heaters, and particularly discloses a sterilization control method for a zero-cold water system of a water heater, wherein the zero-cold water system comprises a pressure sensor and a sterilization unit, and the control method comprises the following steps: and regulating and controlling the sterilization unit according to the change of the water pressure value detected by the pressure sensor. The sterilization control method can intelligently regulate and control the sterilization power through the change of the water pressure value in the water using process, not only can achieve the expected sterilization effect, but also can reduce the using times of the bacteria detection unit, prolong the service life of the bacteria detection unit, and even directly save the bacteria detection unit and save the cost of the water heater.
Description
Technical Field
The invention belongs to the field of water heaters, and particularly relates to a sterilization control method for a zero-cold water system of a water heater.
Background
Because the gas heater is installed in the kitchen, and is far away from bathroom shower faucet, can have a large amount of water in the water pipe of connection, people need put long section cold water when the bathing, and user experience is poor still forms extravagantly. For cold water stored in a pipeline, a plurality of zero-cold-water solutions are available at present, and the cold water in a circulating heating pipe is generally heated to 30-40 degrees. However, bacteria are easy to breed in the water temperature in the pipeline, and people's health is affected by washing water, bathing water, kitchen water and the like. The existing water heater adopts a high-temperature sterilization and bacteriostatic material contact sterilization mode, the water temperature of the water heater is heated to more than 60 degrees, and the high-temperature sterilization is carried out, and the sterilization mode is not thorough and can not reach the sterilization efficiency of more than 90 percent. Simultaneously, in the water use process, the bacterial content also can change, and when the water consumption is great, the rivers state bacterium that flows is difficult for breeding, therefore the bacterial content is less relatively, and the water consumption is little even in the water consumption state, and a large amount of bacterium are easily bred to suitable temperature, consequently can high-efficiently disinfect to different bactericidal power of bacterial content regulation. Often detect bacterial content through increasing bacterium detecting element in the current product, but this will increase the cost of manufacture of water heater certainly, simultaneously, the bacterial content changes constantly in the water use in-process water pipe, and the long-time operating condition that is in of bacterium detecting element also can shorten life. Therefore, it is necessary to provide a sterilization control method capable of adjusting sterilization power for a change in the amount of bacteria in a water pipe with less use of a bacteria detection unit or even without the need for the bacteria detection unit.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a sterilization control method for regulating and controlling the sterilization power of the sterilization units and/or the starting number of the sterilization units and/or the starting types of the sterilization units according to the pressure change, so that the expected sterilization effect can be achieved, and the use of the bacteria detection units can be reduced, even the bacteria detection units are not needed, so that the sterilization power can be regulated according to the change of the bacteria content in the water pipe.
In order to solve the technical problem, the invention provides a sterilization control method for a zero-cold water system of a water heater, wherein the zero-cold water system comprises a pressure sensor and a sterilization unit, and the control method comprises the following steps: and regulating and controlling the sterilization unit according to the change of the water pressure value detected by the pressure sensor.
Further, the zero-cooling water system further comprises a flow sensor for detecting the current water flow, and the sterilization control method comprises the following steps: judging whether the current water flow is 0 or not, and if so, recording that the current water pressure is a static water pressure by the pressure sensor; if the judgment result is negative, the sterilization unit is regulated and controlled by comparing the difference value between the static water pressure and the current water pressure with the first preset value.
Further, the control method includes adjusting the sterilization power of the sterilization unit according to a difference between the static water pressure and the current water pressure.
Further, when the current flow is judged not to be 0, if the difference value between the static water pressure and the front water pressure is greater than a first preset value, the sterilization power of the sterilization unit is adjusted to be P1; if the difference value between the static water pressure and the current water pressure is less than or equal to the first preset value, the sterilization power of the sterilization unit is adjusted to be P2, and P1 is less than P2.
Further, the zero-cold water system comprises a plurality of sterilization units, and the control method comprises the step of controlling the opening number of the sterilization units according to the difference value between the static water pressure and the current water pressure.
Further, when the current flow is judged to be not 0, if the difference value between the static water pressure and the front water pressure is larger than a first preset value, controlling a sterilization unit to be started; and if the difference value between the static water pressure and the front water pressure is less than or equal to a first preset value, controlling the plurality of sterilization units to be started simultaneously.
Further, the sterilization unit comprises a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the control method comprises the step of controlling the cold cathode tube lamp and the LED ultraviolet lamp to be independently or simultaneously started according to the difference value of the static water pressure and the current water pressure.
Further, when the current flow is judged to be not 0, if the difference value between the static water pressure and the previous water pressure is greater than a first preset value, the LED ultraviolet lamp is independently started; and if the difference value between the static water pressure and the front water pressure is smaller than or equal to a first preset value, controlling the cold cathode tube lamp and the LED ultraviolet lamp to be started simultaneously.
Further, the zero-cold water system of the water heater further comprises a booster pump, and the control method further comprises the step that the booster pump adjusts different boosting powers according to the difference value between the static water pressure and the current water pressure.
Further, the control method comprises the following steps: judging whether the difference between the current water pressure and the static water pressure is greater than a second preset value or not, and if so, adjusting the starting power of the booster pump according to the change of the water pressure; if the structure is judged to be negative, no operation is performed; the second preset value is greater than or equal to the first preset value.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: the sterilization power of the sterilization units, and/or the starting number of the sterilization units, and/or the starting types of the sterilization units are regulated and controlled according to the bacterial content in the pipeline predicted by the pressure change, so that a good sterilization effect can be obtained, the using times of the bacterial detection units can be reduced, the service life of the bacterial detection units can be prolonged, and even the bacterial detection units are directly omitted, so that the cost of the water heater is saved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a connection diagram of a zero cold water system of a water heater according to the present invention;
FIG. 2 is a logic flow diagram of a sterilization control method without a bacteria detection unit according to the present invention;
FIG. 3 is a logic flow diagram of a sterilization control method with a bacteria detection unit according to the present invention;
wherein: 1 is the water heater body, 2 is the booster pump, 3 is the cold water inlet tube, 4 is the circulating line, 5 is shower equipment, 6 is the unit of disinfecting, 7 is tap, 8 is the bacterium detecting element.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The zero-cold water system of the water heater shown in fig. 1 comprises a water heater body 1, wherein the water heater body 1 comprises a water inlet and a water outlet, the water inlet and the water outlet are connected through a circulating pipeline 4, and a cold water inlet pipe 3 is connected to the circulating pipeline 4. The water heater is also provided with a circulating pump, the circulating pump is started, and cold water in the circulating pipeline 4 is heated to 30-40 ℃ generally through circulation, so that the water temperature in the water pipe is ensured to meet the water use requirement all the time, the cold water discharge is reduced, and the water resource is saved. A sterilization unit 6 is arranged at the water outlet of the water heater, a pressure sensor is arranged on the circulating pipeline 4 and used for detecting the water pressure value in the circulating pipeline 4, and the pressure sensor is preferably arranged on the circulating pipeline 4 connected with the water outlet end of the water heater. One or more showers 5 and one or more water taps 7 are arranged on the circulating pipeline 4, and a flow sensor is arranged in a zero-cold water system, when a user turns on one or more showers 5 and/or one or more water taps 7, different water flows can occur, the change of the water flows can cause the change of the bacteria content, when the user uses a large amount of water, the water flow in the circulating pipeline 4 is large, the flow speed in the opposite circulating pipeline 4 is also large, bacteria are not easy to grow under the flowing water flow state, and therefore the bacteria content is relatively small; when the water consumption is small or even in a non-water state, the water flow in the circulating pipeline 4 is small, a large amount of bacteria are easy to breed at a proper water temperature, and the bacteria content is relatively large. And water flow changes can cause the water pressure in the circulating pipeline 4 to change in different degrees, so that the water consumption condition of a user can be speculated through water pressure changes, and meanwhile, different sterilization powers of the sterilization units 6 can be adjusted according to the water pressure changes detected by the pressure sensor, so that a better sterilization effect can be achieved, the use times of the bacteria detection units 8 can be reduced, the service lives of the bacteria detection units 8 can be prolonged, and even the bacteria detection units 8 are directly omitted, so that the cost of the water heater is saved.
Example 2
The present embodiment is a sterilization control method proposed on the basis of embodiment 1, and the control logic diagram is shown in fig. 2, and the control method includes adjusting the sterilization power of the sterilization unit 6 according to the change of the water pressure value detected by the pressure sensor. The method specifically comprises the following steps: judging whether the current water flow is 0 or not, and if so, recording that the current water pressure is a static water pressure by the pressure sensor; if the judgment result is negative, the sterilization power is adjusted according to the difference value between the static water pressure value and the current water pressure value and the first preset value, and if the judgment result is that the current flow is not 0, the sterilization power of the sterilization unit 6 is adjusted to be P1 if the difference value between the static water pressure value and the current water pressure value is larger than the first preset value; if the difference between the static water pressure and the current water pressure is less than or equal to the first preset value, the sterilization power of the sterilization unit 6 is adjusted to be P2, and P1 is less than P2; preferably, 0 < P1 ≦ 60%, 60% < P2 ≦ 100%, more preferably, the P1 ═ 60%, the P2 ≦ 100%. Wherein the first preset value is not a fixed value and is determined according to the difference value between the specific static pressure and the current pressure.
Further, when the water pressure sensor detects that the current water pressure is the static water pressure, a user can self-define and start the sterilization unit 6 and adjust the sterilization power according to the water use habit of the user, the sterilization unit 6 can also be started to sterilize according to the recommended time interval and the sterilization power of the water heater, and the sterilization unit 6 is preferably sterilized at 80% -100% power, so that the bacteria content of the water in the circulating pipeline 4 in the water-free state can reach the bacteria content standard.
Example 3
The present embodiment is a sterilization control method in which a plurality of sterilization units 6 are provided based on embodiment 1, and the control method is to control the number of opened sterilization units 6 according to the difference between the static water pressure and the current water pressure. The method specifically comprises the following steps: judging whether the current water flow is 0 or not, and if so, recording that the current water pressure is a static water pressure by the pressure sensor; if the judgment result is negative, controlling the opening number of the sterilization units 6 according to the difference value between the static water pressure value and the current water pressure value and the first preset value, and controlling one sterilization unit 6 to be opened if the difference value between the static water pressure value and the current water pressure value is larger than the first preset value when the current flow is judged not to be 0; if the difference between the static water pressure and the front water pressure is less than or equal to the first preset value, the plurality of sterilization units 6 are controlled to be simultaneously turned on.
Example 4
The present embodiment is a sterilization control method further defined in the kind of the sterilization unit 6 on the basis of embodiment 1, wherein the sterilization unit 6 includes a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the control method includes controlling the cold cathode tube lamp and the LED ultraviolet lamp to be turned on individually or simultaneously according to a difference between a static water pressure and a current water pressure. The method specifically comprises the following steps: judging whether the current water flow is 0 or not, and if so, recording that the current water pressure is a static water pressure by the pressure sensor; if the judgment result is negative, the cold cathode tube lamp and the LED ultraviolet lamp are controlled to be independently started or simultaneously started according to the difference value between the static water pressure value and the current water pressure value and the first preset value, and if the current flow is judged not to be 0, the LED ultraviolet lamp is independently started if the difference value between the static water pressure and the previous water pressure is larger than the first preset value; if the difference between the static water pressure and the front water pressure is smaller than or equal to a first preset value, the cold cathode tube lamp and the LED ultraviolet lamp are controlled to be simultaneously started, the cold cathode tube ultraviolet lamp is started at 100% power, and the LED ultraviolet lamp is closed after being started for a period of time, because the LED ultraviolet lamp is started to sterilize, and the cold cathode tube ultraviolet lamp can sterilize after waiting for a period of time.
Example 5
In this embodiment, a sterilization control method of adding the bacteria detection unit 8 to embodiment 1 is provided, a control logic diagram is shown in fig. 3, the bacteria detection unit 8 is disposed on the water heater body 1, and the sterilization control method includes: whether the bacteria detection unit 8 is started or not is determined according to the water pressure change detected by the pressure sensor, and the sterilization unit 6 is regulated according to the detection value of the bacteria detection unit 8. The method specifically comprises the following steps: judging whether the current water flow is 0 or not, and if so, recording that the current water pressure is a static water pressure by the pressure sensor; if the judgment result is negative, whether the bacteria detection unit 8 is started or not is determined by comparing the difference value between the static water pressure and the current water pressure with the first preset value. When the current flow is not 0, if the difference between the static water pressure and the current water pressure is greater than a first preset value, the sterilization unit 6 is directly started to perform sterilization, the sterilization power of the sterilization unit 6 is less than the maximum sterilization power, and preferably, the sterilization power of the sterilization unit 6 is 0-60%. If the difference value between the static water pressure and the current water pressure is smaller than or equal to the first preset value, the bacteria detection unit 8 is started, the sterilization unit 6 adjusts the sterilization power according to the bacteria content detected by the bacteria detection unit 8, and the sterilization power is in direct proportion to the bacteria content. Wherein the first preset value is not a fixed value and is determined according to the difference value between the specific static pressure and the current pressure.
Further, when the water pressure sensor detects that the water pressure is static water pressure, the bacteria content in the circulating pipeline 4 can be detected by starting the bacteria detection unit 8, and the sterilization power of the sterilization unit 6 can be adjusted according to the detection result, so that the bacteria content of the water in the circulating pipeline 4 in the non-water state can reach the bacteria content standard. The user can start according to self-defining of self water use habit, also can start according to the time interval that the water heater recommends.
Example 6
The present embodiment is a sterilization control method in which a bacteria detection unit 8 is added to embodiment 1, and a plurality of sterilization units 6 are provided, the control method including: when the difference value between the static water pressure and the current water pressure is greater than a first preset value, only one sterilization unit 6 is started for sterilization; when the difference between the static water pressure and the current water pressure is smaller than or equal to the first preset value, the number of the sterilization units 6 is determined to be started according to the bacteria content detected by the bacteria detection unit 8, and the number of the sterilization units 6 is in direct proportion to the bacteria content.
Example 7
The present embodiment is a sterilization control method in which the bacteria detection unit 8 is added to embodiment 1, and the type of the sterilization unit 6 is limited. The sterilization unit 6 comprises a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the control method comprises the following steps: when the difference value between the static water pressure and the current water pressure is greater than a first preset value, the LED ultraviolet lamp independently sterilizes; when the difference between the static water pressure and the current water pressure is smaller than or equal to the first preset value, the cold cathode tube ultraviolet lamp alone or the cold cathode tube ultraviolet lamp and the LED ultraviolet lamp simultaneously sterilize is determined according to the bacteria content detected by the bacteria detection unit 8. In this embodiment, the bacteria content is divided into three standards, namely, a low standard, a medium standard and a high standard, and the bacteria range values of the three standards are set when the water heater is delivered from a factory. When the bacteria detection unit 8 detects that the bacteria content is in a low content range, independently starting the LED ultraviolet sterilization; when the bacteria content is in the medium content range, independently starting the cold cathode tube for sterilization, and adjusting the sterilization power of the cold cathode tube according to the bacteria detection value, wherein the sterilization power of the ultraviolet lamp of the cold cathode tube is preferably 50-70%; when the bacterial content is in the high content range, then start LED ultraviolet ray and cold cathode tube ultraviolet lamp and disinfect simultaneously, cold cathode tube ultraviolet lamp this moment opens with 100% power, and LED ultraviolet sterilization opens and closes after a period of time, and this is because LED ultraviolet lamp opens and disinfects promptly, and cold cathode tube ultraviolet ray can disinfect after needing to wait for a period of time. Example 8
In this embodiment, the booster pump 2 is additionally provided on the basis of the embodiment 2, and the control method for the booster pump 2 is characterized in that when the difference between the static water pressure and the current water pressure is large, the water pressure change in the circulation pipeline 4 is large, and when the standard water pressure for ensuring the water supply amount needs to be reached, the starting power of the booster pump 2 is required to be large, otherwise, the water pressure change in the circulation pipeline 4 is small, and when the standard water pressure for ensuring the water supply amount needs to be reached, the starting power of the booster pump 2 is required to be small. The control method comprises the step that the booster pump 2 adjusts different boosting powers according to the difference value of the static water pressure and the current water pressure. The method specifically comprises the following steps: judging whether the difference between the current water pressure and the static water pressure is greater than a second preset value or not, and if so, adjusting the starting power of the booster pump 2 according to the water pressure change; if the structure is judged to be negative, no operation is performed; the second preset value is greater than or equal to the first preset value. And the opening power of the booster pump 2 is in direct proportion to the difference value between the current water pressure and the static water pressure.
Through detecting water pressure in the circulating pipeline 4, when not being in the water use state, it is static water pressure to detect the water pressure value in the circulating pipeline 4, when being in the water use state, judges whether current water pressure is less than the second default, the second default is the standard water pressure (troublesome standard water pressure numerical range that provides) of guaranteeing the water yield promptly, if current water pressure value is less than standard water pressure, can cause the water supply volume can be not enough, through starting booster pump 2, thereby makes water pressure in the water pipe reach standard water pressure's scope and guarantees the water consumption. Since the water pressure value in the large water consumption state is often lower than the standard water pressure, in order to ensure the water consumption in the large water consumption state, the second preset value should be greater than or equal to the first preset value.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A sterilization control method for a zero-cold water system of a water heater is characterized in that the zero-cold water system comprises a pressure sensor and a sterilization unit, and the control method comprises the following steps: and regulating and controlling the sterilization unit according to the change of the water pressure value detected by the pressure sensor.
2. The sterilization control method for the zero-cold water system of the water heater according to claim 1, wherein the zero-cold water system further comprises a flow sensor for detecting the current water flow, and the sterilization control method comprises the following steps: judging whether the current water flow is 0 or not, and if so, recording that the current water pressure is a static water pressure by the pressure sensor; if the judgment result is negative, the sterilization unit is regulated and controlled by comparing the difference value between the static water pressure and the current water pressure with the first preset value.
3. The sterilization control method of the zero-cold water system of the water heater as claimed in claim 2, wherein the control method comprises adjusting the sterilization power of the sterilization unit according to the difference between the static water pressure and the current water pressure.
4. The sterilization control method of the zero-cold water system of the water heater according to claim 3, wherein when the current flow is judged not to be 0, if the difference between the static water pressure and the previous water pressure is greater than the first preset value, the sterilization power of the sterilization unit is adjusted to be P1; if the difference value between the static water pressure and the current water pressure is less than or equal to the first preset value, the sterilization power of the sterilization unit is adjusted to be P2, and P1 is less than P2.
5. The sterilization control method of the zero-cold water system of the water heater as claimed in claim 2, wherein the zero-cold water system comprises a plurality of sterilization units, and the control method comprises controlling the number of the sterilization units to be opened according to the difference between the static water pressure and the current water pressure.
6. The sterilization control method of the zero-cold water system of the water heater according to claim 5, wherein when the current flow is judged not to be 0, if the difference between the static water pressure and the previous water pressure is greater than a first preset value, a sterilization unit is controlled to be started; and if the difference value between the static water pressure and the front water pressure is less than or equal to a first preset value, controlling the plurality of sterilization units to be started simultaneously.
7. The sterilization control method of the zero cooling water system of the water heater according to claim 2, wherein the sterilization unit comprises a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the control method comprises controlling the cold cathode tube ultraviolet lamp and the LED ultraviolet lamp to be turned on individually or simultaneously according to the difference between the static water pressure and the current water pressure.
8. The sterilization control method of the zero cooling water system of the water heater according to claim 7, wherein when the current flow is judged not to be 0, if the difference between the static water pressure and the previous water pressure is greater than a first preset value, the LED ultraviolet lamp is independently turned on; and if the difference value between the static water pressure and the front water pressure is smaller than or equal to a first preset value, controlling the cold cathode tube lamp and the LED ultraviolet lamp to be started simultaneously.
9. The sterilization control method for the zero-cold water system of the water heater according to any one of the claims 1 to 8, wherein the zero-cold water system of the water heater further comprises a booster pump, and the control method further comprises the step that the booster pump adjusts different boosting powers according to the difference value between the static water pressure and the current water pressure.
10. The sterilization control method for the zero-cold water system of the water heater according to claim 9, characterized in that the control method comprises the following steps: judging whether the difference between the current water pressure and the static water pressure is greater than a second preset value or not, and if so, adjusting the starting power of the booster pump according to the change of the water pressure; if the structure is judged to be negative, no operation is performed; the second preset value is greater than or equal to the first preset value.
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| CN201811426846.6A CN111217420B (en) | 2018-11-27 | 2018-11-27 | Sterilization control method for zero-cold water system of water heater |
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| CN201811426846.6A CN111217420B (en) | 2018-11-27 | 2018-11-27 | Sterilization control method for zero-cold water system of water heater |
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Cited By (2)
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| CN113048656A (en) * | 2021-03-12 | 2021-06-29 | 华帝股份有限公司 | Sterilization control method of electric water heater |
| CN114136008A (en) * | 2021-10-26 | 2022-03-04 | 浙江中广电器股份有限公司 | Water storage tank sterilization control method and device and water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111217420B (en) | 2022-12-13 |
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