CN111217421A - 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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- CN111217421A CN111217421A CN201811428467.0A CN201811428467A CN111217421A CN 111217421 A CN111217421 A CN 111217421A CN 201811428467 A CN201811428467 A CN 201811428467A CN 111217421 A CN111217421 A CN 111217421A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 267
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 134
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 134
- 238000000034 method Methods 0.000 title claims abstract description 49
- 241000894006 Bacteria Species 0.000 claims abstract description 99
- 230000008859 change Effects 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims description 57
- 238000001514 detection method Methods 0.000 claims description 54
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 2
- 230000001580 bacterial effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000003287 bathing Methods 0.000 description 2
- 230000004075 alteration 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
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3222—Units using UV-light emitting diodes [LED]
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3227—Units with two or more lamps
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/326—Lamp control systems
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/12—Location of water treatment or water treatment device as part of household appliances such as dishwashers, laundry washing machines or vacuum cleaners
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention belongs to the field of water heaters, and particularly discloses a sterilization control method of a zero-cold water system of a water heater. Whether start the bacterium detecting element through the zero cold water system water pipe pressure change decision of water heater to further regulate and control the unit that disinfects according to the bacterium content that the bacterium detecting element detected, both can obtain better bactericidal effect, can reduce bacterium detecting element number of times of use extension bacterium detecting element life-span again.
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 the sterilization power according to the change of the bacteria content in the water pipe by reducing the frequency of using 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 in the prior art, and provide a method for determining whether to start the bacteria detection unit according to the water pressure change detected by the pressure sensor, and further regulating and controlling the sterilization unit according to the bacteria content detected by the bacteria detection unit, so that a better sterilization effect can be obtained, the use times of the bacteria detection unit can be reduced, and the service life of the bacteria detection unit can be prolonged.
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, a bacteria detection unit and a sterilization unit, and the sterilization control method comprises the following steps: and determining whether to start the bacteria detection unit according to the water pressure change detected by the pressure sensor, and regulating and controlling the sterilization unit according to the detection value of the bacteria detection unit.
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, whether the bacteria detection unit 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.
Further, when the current flow is judged to be not 0, if the difference value between the static water pressure and the current water pressure is greater than a first preset value, the sterilization unit is directly started to perform sterilization; and if the difference value between the static water pressure and the current water pressure is less than or equal to a first preset value, starting the bacteria detection unit.
Further, when the difference between the static water pressure and the current water pressure is greater than a first preset value, the sterilization power of the sterilization unit is less than the maximum sterilization power, and preferably, the sterilization power of the sterilization unit is 0-60%.
Further, when the difference value between the static water pressure and the current water pressure is smaller than or equal to a first preset value, the sterilization unit adjusts the sterilization power according to the bacteria content detected by the bacteria detection unit, and the sterilization power is in direct proportion to the bacteria content.
Further, the zero-cold water system comprises a plurality of sterilization units, 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, only one sterilization unit is started for sterilization; when the difference value between the static water pressure and the current water pressure is smaller than or equal to a first preset value, the number of the sterilization units is determined to be started according to the bacteria content detected by the bacteria detection unit, and the number of the sterilization units is in direct proportion to the bacteria content.
Further, the sterilization unit comprises a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and 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 performs independent sterilization; when the difference value between the static water pressure and the current water pressure is smaller than or equal to a 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.
Further, when the difference between the static water pressure and the current water pressure is larger than a first preset value, the sterilization power of the ultraviolet lamp of the cold cathode tube is adjusted according to the detail content detected by the bacteria detection unit.
Further, the zero-cooling water system 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 booster pump; if the judgment result is negative, no operation is performed; the second preset value is less than or equal to the first preset value.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects that whether the bacteria detection unit is started or not is determined according to the water pressure change detected by the pressure sensor, and the sterilization power of the sterilization unit, or the number of the started sterilization units, or the type of the sterilization units is controlled according to the bacteria detection unit, so that a better sterilization effect can be obtained, the use times of the bacteria detection unit can be reduced, and the service life of the bacteria detection unit can be prolonged.
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 with a bacteria detection unit according to the present invention;
FIG. 3 is a logic flow diagram of a sterilization control method without 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 and a bacteria detection unit 8 are 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 shower devices 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 shower devices 5 and/or one or more water taps 7, different water flows can occur, and 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 breed in 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 change can cause the water pressure in the circulating pipeline 4 to change to different degrees, so the water consumption condition of a user can be presumed through the water pressure change, when the water pressure change is large, the water consumption of the user is presumed to be increased, the water flow in the circulating pipeline 4 is large, bacteria are not easy to breed, so the bacteria content is relatively small, the sterilization unit 6 is directly started at the moment, and sterilization is carried out according to low power, and the preferable sterilization power is 30-50%. When the water pressure changes less, supposing that the water consumption of the user is small, the water flow in the circulating pipeline 4 is small, bacteria are easy to breed, but the range of the content of the bacteria in the circulating pipeline 4 is large at the moment, in order to ensure the effective sterilization efficiency, the content of the bacteria in the circulating pipeline 4 is detected through the bacteria detection unit 8, and along with the reduction of the content of the bacteria in the circulating pipeline 4, the sterilization power of the sterilization unit 6 is reduced. Therefore, whether to start the bacteria detection unit 8 is determined according to the water pressure change in the circulation pipeline 4, and the sterilization power of the sterilization unit 6 is adjusted according to the detection result of the bacteria detection unit 8 when the bacteria detection unit 8 is started, so that the good sterilization effect can be achieved, the use times of the bacteria detection unit 8 can be reduced, and the service life of the bacteria detection unit 8 can be prolonged.
Preferably, the water heater body 1 further comprises a display screen, and the display screen displays different bacteria contents according to the detection value of the bacteria detection unit 8.
Example 2
This embodiment is a sterilization control method based on embodiment 1, and a control logic diagram is shown in fig. 2. The sterilization control method comprises the following steps: 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 current 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 3
The present embodiment is a sterilization control method in which a plurality of sterilization units 6 are provided on the basis of embodiment 1, 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 4
The present embodiment is a sterilization control method further defined in embodiment 1 as to the kind of the sterilization unit 6, wherein the sterilization unit 6 includes a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the control method includes: 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 5
The present embodiment is a sterilization control method in which the bacteria detecting unit 8 is omitted from embodiment 1, and the control logic diagram is shown in fig. 3, and the control method includes adjusting the sterilization power of the sterilization unit 6 according to the variation 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 6
In this embodiment, the bacteria detecting unit 8 is omitted from embodiment 1, and a sterilization control method for controlling the number of the sterilization units 6 to be turned on according to the difference between the static water pressure and the current water pressure is provided. 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 7
In this embodiment, the bacteria detection unit 8 is omitted from embodiment 1, and the sterilization control method is limited in the type of the sterilization unit 6. The sterilization unit 6 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 ultraviolet 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. 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 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, detect that the water pressure value in the circulating pipeline 4 is static water pressure, when being in the water use state, judge whether current water pressure is less than the second default, the second default is the standard water pressure 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 it guarantees the water consumption to make water pressure reach standard water pressure's scope in the water pipe. 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, a bacteria detection unit and a sterilization unit, and the sterilization control method comprises the following steps: and determining whether to start the bacteria detection unit according to the water pressure change detected by the pressure sensor, and regulating and controlling the sterilization unit according to the detection value of the bacteria detection unit.
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, whether the bacteria detection unit 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.
3. The sterilization control method of the zero-cold water system of the water heater according to claim 2, wherein when the current flow is judged not to be 0, if the difference between the static water pressure and the current water pressure is greater than a first preset value, the sterilization unit is directly started to perform sterilization; and if the difference value between the static water pressure and the current water pressure is less than or equal to a first preset value, starting the bacteria detection unit.
4. The sterilization control method for the zero-cold water system of the water heater according to claim 3, wherein when the difference between the static water pressure and the current water pressure is greater than a first preset value, the sterilization power of the sterilization unit is less than the maximum sterilization power, and preferably, the sterilization power of the sterilization unit is 0-60%.
5. The sterilization control method of claim 3, wherein when the difference between the static water pressure and the current water pressure is less than or equal to the first preset value, the sterilization unit adjusts the sterilization power according to the bacteria content detected by the bacteria detection unit, and the sterilization power is proportional to the bacteria content.
6. The sterilization control method of the zero-cold water system of the water heater according to claim 3, wherein the zero-cold water system comprises a plurality of sterilization units, and the control method comprises: 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 is started for sterilization; when the difference value between the static water pressure and the current water pressure is smaller than or equal to a first preset value, the number of the sterilization units is determined to be started according to the bacteria content detected by the bacteria detection unit, and the number of the sterilization units is in direct proportion to the bacteria content.
7. The sterilization control method of the zero cooling water system of the water heater according to claim 3, wherein the sterilization unit comprises a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and when the difference between the static water pressure and the current water pressure is greater than a first preset value, the LED ultraviolet lamp is independently sterilized; when the difference value between the static water pressure and the current water pressure is smaller than or equal to a 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. The sterilization control method of a zero-cold water system of a water heater as claimed in claim 7, wherein when the difference between the static water pressure and the current water pressure is greater than a first preset value, the sterilization power of the ultraviolet lamp of the cold cathode tube is adjusted according to the detail content detected by the bacteria detection unit.
9. The sterilization control method for the zero-cold water system of the water heater as claimed in any one of claims 5 to 8, wherein the zero-cold water system 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 booster pump; if the judgment result is negative, no operation is performed; the second preset value is less than or equal to the first preset value.
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