CN111217421B - Sterilization control method for zero-cooling water system of water heater - Google Patents
Sterilization control method for zero-cooling water system of water heater Download PDFInfo
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- CN111217421B CN111217421B CN201811428467.0A CN201811428467A CN111217421B CN 111217421 B CN111217421 B CN 111217421B CN 201811428467 A CN201811428467 A CN 201811428467A CN 111217421 B CN111217421 B CN 111217421B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 253
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 138
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000000498 cooling water Substances 0.000 title claims abstract description 22
- 241000894006 Bacteria Species 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims abstract description 61
- 230000008859 change Effects 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000003068 static effect Effects 0.000 claims description 57
- 230000001580 bacterial effect Effects 0.000 claims description 31
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000003287 bathing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 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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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- 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-cooling water system of a water heater, which comprises a pressure sensor, a bacteria detection unit and a sterilization unit. The water pipe pressure change in the zero-cold water system of the water heater is used for determining whether to start the bacteria detection unit or not, and the bacteria detection unit is further regulated and controlled according to the bacteria content detected by the bacteria detection unit, so that a good 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.
Description
Technical Field
The invention belongs to the field of water heaters, and particularly relates to a sterilization control method of a zero-cooling water system of a water heater.
Background
Because the gas water heater is installed in the kitchen, far away from the bathroom shower faucet, a large amount of water can exist in the connected water pipe, people need to put very long cold water when bathing, and the user experience is poor and waste is formed. For cold water stored in a pipeline, a plurality of zero cold water solutions exist at present, and cold water in a heating pipe is circulated, and the water temperature is generally 30 to 40 degrees. However, the water temperature in the pipeline is easier to grow bacteria, and water for washing and rinsing, water for bathing, water for kitchen and the like can bring adverse effects to the health of people. At present, the existing water heater adopts a high-temperature sterilization and antibacterial material contact sterilization mode, the water temperature of the water heater is heated to above 60 degrees, and high-temperature sterilization is carried out, so that the sterilization mode is not thorough, and the sterilization efficiency can not reach above 90%. Meanwhile, in the water consumption process, the bacterial content can also change, when the water consumption is large, bacteria in a flowing water flow state are not easy to breed, so that the bacterial content is relatively small, and in the water consumption state even in a non-water consumption state, a proper water temperature is easy to breed a large amount of bacteria, and therefore, different sterilization powers can be adjusted according to different bacterial contents. The bacterial content is often detected through increasing the bacterial detection unit in the current product, but this will increase the cost of manufacture of water heater certainly, simultaneously, the bacterial content constantly changes in the water pipe in the water use process, and the bacterial detection unit also can shorten life in operating condition for a long time. Therefore, it is necessary to provide a sterilization control method capable of reducing the frequency of use of the bacteria detection unit and adjusting the sterilization power according to the change of the bacteria content in the water pipe.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art, and provides the 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 bacteria detection unit according to the bacteria content detected by the bacteria detection unit, so that the method can obtain a good sterilization effect, reduce the use times of the bacteria detection unit and prolong the service life of the bacteria detection unit.
In order to solve the technical problems, the invention provides a sterilization control method of a zero-cooling water system of a water heater, wherein the zero-cooling 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, if so, recording that the current water pressure is 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 larger than a first preset value, directly starting the sterilization unit to sterilize; if the difference value between the static water pressure and the current water pressure is smaller 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 the first preset value, the sterilization power of the sterilization unit is smaller than the maximum sterilization power, and preferably, the sterilization power of the sterilization unit is 0-60%.
Further, when the difference 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 cooling 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 larger than a first preset value, only one sterilization unit is started for sterilization; when the difference 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 bacterial content detected by the bacterial detection unit, and the number of the sterilization units is in direct proportion to the bacterial content.
Further, 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 larger than a first preset value, the LED ultraviolet lamp is used for independently sterilizing; when the difference 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 is independently sterilized or the cold-cathode tube ultraviolet lamp and the LED ultraviolet lamp are simultaneously sterilized according to the bacterial content detected by the bacterial 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 cold cathode tube ultraviolet lamp 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 of adjusting different boosting powers of the booster pump according to the difference value of the static water pressure and the current water pressure.
Further, the control method includes: judging whether the difference between the current water pressure and the static water pressure is larger than a second preset value, and if so, regulating the booster pump; if the judgment result is negative, no operation is performed; the second preset value is smaller than or equal to the first preset value.
By adopting the technical scheme, 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 is controlled according to the bacteria detection unit, or the number of the sterilization units or the types of the sterilization units are started, so that the 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 the 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 and 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. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a diagram showing the connection of a zero cooling water system of a water heater according to the present invention;
FIG. 2 is a logic flow diagram of a sterilization control method for setting 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 a water heater body, 2 is a booster pump, 3 is a cold water inlet pipe, 4 is a circulating pipeline, 5 is shower equipment, 6 is a sterilization unit, 7 is a faucet, and 8 is a bacteria detection unit.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill 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 ℃ in general through circulating, so that the water temperature in the water pipe is ensured to always meet the water consumption requirement, the discharge of the cold water is reduced, and the water resource is saved. The water outlet of the water heater is provided with a sterilization unit 6 and a bacteria detection unit 8, and the circulating pipeline 4 is provided with a pressure sensor 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 further arranged on the circulation pipeline 4, and a flow sensor is arranged in the zero-cooling water system, when one or more shower devices 5 and/or one or more water taps 7 are/is/are opened by a user, different water flows can occur, the bacterial content can be changed due to the change of the water flows, when a large amount of water is used by the user, the water flow in the circulation pipeline 4 is high, the flow rate in the opposite circulation pipeline 4 is also high, bacteria are not easy to breed in the flowing water flow state, and therefore the bacterial content is relatively small; when the water consumption is small, even in a non-water state, the water flow in the circulating pipeline 4 is small, a large amount of bacteria can be easily bred in a proper water temperature, and the bacteria content is relatively large. The water pressure in the circulation pipeline 4 is changed to different degrees due to the change of the water flow, so that the water consumption condition of a user can be estimated through the change of the water pressure, when the water pressure is changed to be large, the water consumption of the user is estimated to be large, the water flow in the circulation pipeline 4 is large, bacteria are not easy to breed, the bacteria content is relatively small, the sterilization unit 6 is directly started at the moment, sterilization is performed according to lower power, and the sterilization power is preferably 30-50%. When the water pressure change is smaller, the water consumption of the user is presumed to be small, the water flow in the circulation pipeline 4 is small, bacteria are easy to breed, but the bacteria content range in the circulation pipeline 4 is larger at this time, in order to ensure the effective sterilization efficiency, the bacteria content in the circulation pipeline 4 is detected by the bacteria detection unit 8, and the sterilization power of the sterilization unit 6 is also reduced along with the reduction of the bacteria content in the circulation pipeline 4. Therefore, whether the bacteria detection unit 8 is started or not is determined according to the water pressure change in the circulation pipeline 4, and when the bacteria detection unit 8 is started, the sterilization power of the sterilization unit 6 is adjusted according to the detection result of the bacteria detection unit 8, so that a 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 includes a display screen, and the display screen displays different bacterial contents according to the detection value of the bacterial detection unit 8.
Example 2
The present embodiment is a sterilization control method proposed on the basis of embodiment 1, and a control logic diagram is shown in fig. 2. The sterilization control method comprises the following steps: whether to start the bacteria detecting unit 8 is determined according to the water pressure change detected by the pressure sensor, and the sterilizing unit 6 is regulated and controlled according to the detection value of the bacteria detecting unit 8. The method comprises the following steps: judging whether the current water flow is 0 or not, if so, recording that the current water pressure is static water pressure by the pressure sensor; if the result of the judgment is negative, whether to start the bacteria detection unit 8 is determined by comparing the difference between the static water pressure and the current water pressure with the first preset value. When the current flow is judged to be not 0, if the difference between the static water pressure and the current water pressure is larger than a first preset value, the sterilization unit 6 is directly started to perform sterilization, and at the moment, the sterilization power of the sterilization unit 6 is smaller than the maximum sterilization power, and preferably, the sterilization power of the sterilization unit 6 is 0-60%. If the difference between the static water pressure and the current water pressure is smaller than or equal to a first preset value, starting the bacteria detection unit 8, and regulating the sterilization power by the sterilization unit 6 according to the bacteria content detected by the bacteria detection unit 8, wherein 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 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, the bacteria detection unit 8 can be started to detect the bacteria content in the circulation pipeline 4, 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 circulation pipeline 4 can reach the bacteria content standard when the water is not used. The user can self-define start according to own water habit, also can start according to the time interval that the water heater recommended.
Example 3
This 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 between the static water pressure and the current water pressure is larger 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 bacterial content detected by the bacterial detection unit 8, and the number of the sterilization units 6 is in direct proportion to the bacterial content.
Example 4
The present embodiment is a sterilization control method for further defining the kind of the sterilization unit 6 on the basis of embodiment 1, the sterilization unit 6 includes a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the control method is as follows: when the difference value between the static water pressure and the current water pressure is larger than a first preset value, the LED ultraviolet lamp is used for sterilizing independently; when the difference 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 is independently sterilized or the cold-cathode tube ultraviolet lamp and the LED ultraviolet lamp are simultaneously sterilized according to the bacterial content detected by the bacterial detection unit 8. In this embodiment, the bacteria content is divided into three criteria, namely low, medium and high, and the bacteria range values of the three criteria are set when the water heater leaves the factory. When the bacteria detection unit 8 detects that the bacteria content is in a low content range, the LED ultraviolet sterilization is independently started; when the bacterial content is in the medium content range, independently starting cold cathode tube sterilization, and adjusting the sterilization power of the cold cathode tube according to the bacterial detection value, wherein the sterilization power of the cold cathode tube ultraviolet lamp is preferably 50-70%; when the bacterial content is in the high content range, the LED ultraviolet and the cold-cathode tube ultraviolet lamp are started for sterilization at the same time, at the moment, the cold-cathode tube ultraviolet lamp is started at 100% power, and the LED ultraviolet lamp is turned off after being turned on for a period of time, because the LED ultraviolet lamp is turned on for sterilization, and the cold-cathode tube ultraviolet lamp can be sterilized after waiting for a period of time.
Example 5
This embodiment is a sterilization control method omitting the bacteria detecting unit 8 on the basis of embodiment 1, the control logic diagram being shown in fig. 3, the control method including adjusting the sterilization power of the sterilization unit 6 in accordance with the change in the water pressure value detected by the pressure sensor. The method comprises the following steps: judging whether the current water flow is 0 or not, if so, recording that the current water pressure is static water pressure by the pressure sensor; if the judgment result is negative, the sterilization power is regulated 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 not 0, the sterilization power of the sterilization unit 6 is regulated to be P1 if the difference value between the static water pressure and the current water pressure is larger than the first preset value; if the difference between the static water pressure and the current water pressure is smaller than or equal to a first preset value, the sterilization power of the sterilization unit 6 is adjusted to be P2, and P1 is smaller than P2; preferably 0 < p1.ltoreq.60%, 60% < p2.ltoreq.100%, more preferably p1=60% and p2=100%. Wherein the first preset value is not a fixed value and is determined according to the difference 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 sterilizing unit 6 according to own water usage habit and adjust sterilizing power, and can start the sterilizing unit 6 to sterilize according to the recommended time interval and sterilizing power of the water heater, preferably, the sterilizing unit 6 is sterilized with 80% -100% power, so that the bacterial content of water in the circulating pipeline 4 reaches the bacterial content standard in a non-water-using state. Example 6
In this embodiment, the bacteria detecting unit 8 is omitted based on embodiment 1, and a sterilization control method of a plurality of sterilization units 6 is provided, wherein the control method is to control the opening number of the sterilization units 6 according to the difference between the static water pressure and the current water pressure. The method comprises the following steps: judging whether the current water flow is 0 or not, if so, recording that the current water pressure is 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 if the current flow is not 0, controlling one sterilization unit 6 to be opened 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 the first preset value, a plurality of sterilization units 6 are controlled to be simultaneously started.
Example 7
This embodiment is a sterilization control method in which the bacteria detection unit 8 is omitted and the type of the sterilization unit 6 is limited on the basis of embodiment 1. 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 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 comprises the following steps: judging whether the current water flow is 0 or not, if so, recording that the current water pressure is static water pressure by the pressure sensor; if the judgment result is negative, controlling the cold cathode tube lamp and the LED ultraviolet lamp to be independently 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 not 0, if the difference value between the static water pressure and the front water pressure is larger than the first preset value, independently starting the LED ultraviolet lamp; if the difference between the static water pressure and the front water pressure is smaller than or equal to the first preset value, the cold cathode tube lamp and the LED ultraviolet lamp are controlled to be simultaneously turned on, at the moment, the cold cathode tube lamp is turned on at 100% power, and the LED ultraviolet lamp is turned off after being turned on for a period of time, because the LED ultraviolet lamp is turned on, namely, sterilization is performed, and the cold cathode tube lamp ultraviolet lamp can be sterilized after waiting for a period of time.
Example 8
In this embodiment, the booster pump 2 is added on the basis of embodiment 2, and for the control method of the booster pump 2, 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 guaranteeing the water supply is required to be reached, the starting power of the booster pump 2 is required to be large, whereas when the water pressure change in the circulation pipeline 4 is small, and when the standard water pressure for guaranteeing the water supply is required to be reached, the starting power of the booster pump 2 is required to be small. The control method comprises 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 comprises the following steps: judging whether the difference between the current water pressure and the static water pressure is larger than a second preset value, and if so, adjusting the starting power of the booster pump 2 according to the water pressure change; if the judging structure is no, 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 between the current water pressure and the static water pressure.
Through detecting the water pressure in the circulating pipeline 4, when not being in the water state, the water pressure value in the circulating pipeline 4 is detected to be static water pressure, when being in the water state, whether the current water pressure is lower than a second preset value is judged, the second preset value is the standard water pressure for guaranteeing the water yield, if the current water pressure value is lower than the standard water pressure, the water supply capacity can be insufficient, and by starting the booster pump 2, the water pressure in the water pipe reaches the range of the standard water pressure, so that the water consumption is guaranteed. Since the water pressure value in the state of a large amount of water is often lower than the standard water pressure, the second preset value should be greater than or equal to the first preset value in order to ensure the water consumption in the state of a large amount of water.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (9)
1. A sterilization control method of a zero-cooling water system of a water heater, wherein the zero-cooling water system comprises a pressure sensor, a bacteria detection unit and a sterilization unit, the pressure sensor is arranged on a circulating pipeline and is used for detecting a water pressure value in the circulating pipeline, and the sterilization control method comprises the following steps: 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;
the zero cooling water system also 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, if so, recording that the current water pressure is static water pressure by the pressure sensor; if the judgment result is negative, determining whether to start the bacteria detection unit by comparing the difference value of the static water pressure and the current water pressure with the first preset value;
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 larger than a first preset value, directly starting a sterilization unit to sterilize; if the difference value between the static water pressure and the current water pressure is smaller than or equal to a first preset value, starting the bacteria detection unit.
2. The sterilization control method of a zero-water system of a water heater according to claim 1, wherein the sterilization power of the sterilization unit is smaller than the maximum sterilization power when the difference between the static water pressure and the current water pressure is greater than a first preset value.
3. The sterilization control method of a zero-cooling water system of a water heater according to claim 2, wherein the sterilization power of the sterilization unit is 0-60%.
4. The sterilization control method of a zero-cooling water system of a water heater according to claim 1, wherein the sterilization unit adjusts the sterilization power according to the bacteria content detected by the bacteria detection unit when the difference between the static water pressure and the current water pressure is less than or equal to a first preset value, and the sterilization power is in direct proportion to the bacteria content.
5. The sterilization control method of a zero-cooling water system of a water heater according to claim 1, wherein the zero-cooling water system includes a plurality of sterilization units, the control method comprising: when the difference value between the static water pressure and the current water pressure is larger than a first preset value, only one sterilization unit is started for sterilization; when the difference 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 bacterial content detected by the bacterial detection unit, and the number of the sterilization units is in direct proportion to the bacterial content.
6. The sterilization control method of a zero-cold water system of a water heater according to claim 1, wherein the sterilization unit comprises a cold cathode tube ultraviolet lamp and an LED ultraviolet lamp, and the LED ultraviolet lamp is independently sterilized when a difference between a static water pressure and a current water pressure is greater than a first preset value; when the difference 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 is independently sterilized or the cold-cathode tube ultraviolet lamp and the LED ultraviolet lamp are simultaneously sterilized according to the bacterial content detected by the bacterial detection unit.
7. The sterilization control method of a zero-cooling water system of a water heater according to claim 6, wherein when the difference between the static water pressure and the current water pressure is less than or equal to a first preset value, the sterilization power of the cold cathode tube ultraviolet lamp is adjusted according to the bacteria content detected by the bacteria detecting unit.
8. The sterilization control method of a zero-cooling water system of a water heater according to any one of claims 4 to 7, wherein the zero-cooling water system further comprises a booster pump, and the control method further comprises the step of adjusting different booster powers of the booster pump according to a difference between a static water pressure and a current water pressure.
9. The sterilization control method of a zero-cooling water system of a water heater according to claim 8, wherein the control method comprises: judging whether the difference between the current water pressure and the static water pressure is larger than a second preset value, and if so, regulating the booster pump; if the judgment result is negative, no operation is performed; the second preset value is greater than or equal to the first preset value.
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| CN201811428467.0A CN111217421B (en) | 2018-11-27 | 2018-11-27 | Sterilization control method for zero-cooling water system of water heater |
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