CN109386971B - Water heater - Google Patents
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- CN109386971B CN109386971B CN201710693009.9A CN201710693009A CN109386971B CN 109386971 B CN109386971 B CN 109386971B CN 201710693009 A CN201710693009 A CN 201710693009A CN 109386971 B CN109386971 B CN 109386971B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 193
- 238000001514 detection method Methods 0.000 claims abstract description 232
- 239000005416 organic matter Substances 0.000 claims abstract description 74
- 230000001681 protective effect Effects 0.000 claims description 38
- 238000002955 isolation Methods 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 241000700605 Viruses Species 0.000 abstract description 7
- 241000894006 Bacteria Species 0.000 abstract description 4
- 239000008213 purified water Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a water heater, which comprises a water tank with a water inlet and a water outlet, and is characterized in that: an organic matter detection sensor for detecting the organic matter content in water entering the water tank or/and flowing out of the water tank or/and in the water tank is arranged at the water inlet or/and the water outlet or/and in the water tank. The organic matter detection sensor comprises a light source (1) capable of emitting ultraviolet rays and a detection component which is matched with the light source (1) and capable of detecting the organic matter content in water, wherein the detection component comprises a detection tube (2), a detection group ultraviolet receiver (3) and a circuit board (4). Compared with the prior art, the invention has the advantages that: and judging whether bacteria and viruses are bred in the water heater or on a water heater pipeline by using the detected content of organic matters in water entering the water tank or/and flowing out of the water tank or/and in the water tank.
Description
Technical Field
The invention relates to a water heater, in particular to a water heater capable of detecting the content of organic matters in water entering a water tank or/and flowing out of the water tank or/and in the water tank.
Background
At present, the living standard of people is better and the requirements on all aspects are higher and higher. As a necessary home appliance, the water heater is also receiving attention from users. The water heater generally heats tap water to 35-70 ℃, and the temperature of the temperature section does not have the sterilization function. Especially at certain temperatures, and is more favorable for breeding bacteria and viruses. In particular to a water storage type water heater, warm water can be stored in a water storage tank for a long time in the heat preservation process, and bacterial viruses can be greatly bred in the process. If the user washes the skin with such water, or brushes the teeth and rinses, it is likely to be affected by bacterial viruses. The existing products and technologies in the market at present can not effectively detect the organic matter content of water discharged from the water heater or water in the water storage tank, so that development of a practical and effective water heater organic matter content detection device has great significance.
At present, the detection of the content of the organic matters mainly depends on a spectrophotometer, and the working principle is as follows: the total content of the organic matters is indirectly represented by the absorbance of the ultraviolet rays with the wavelength of 254 nanometers, after the ultraviolet rays with the wavelength of 254 nanometers penetrate through water, the organic matters in the water absorb part of the ultraviolet rays, and the higher the concentration of the organic matters is, the higher the intensity of the ultraviolet ray absorption is, so the absorbance of the ultraviolet rays corresponds to the content of the organic matters. Different organic matters have different absorption intensities for ultraviolet rays with different wavelengths, and the content of different organic matters in the water can be approximately analyzed by scanning the absorption intensities of the ultraviolet rays with different wavelengths. And the measurement of the total content, namely the comprehensive index of the content of different organic matters, is mainly embodied on ultraviolet rays with 254 nm wavelength. However, the spectrophotometer itself is an instrument, which is very expensive and very bulky, and above all has a certain obstacle to the use of ordinary people.
Disclosure of Invention
The invention aims to solve the technical problem of providing a water heater capable of displaying the content of organic matters in water entering a water tank or/and flowing out of the water tank or/and in the water tank in real time aiming at the prior art.
The technical scheme adopted for solving the technical problems is as follows: a water heater comprising a water tank having a water inlet and a water outlet, characterized in that: an organic matter detection sensor for detecting the organic matter content in water entering the water tank or/and exiting the water tank or/and in the water tank is arranged at the water inlet or/and the water outlet of the water tank or/and in the water tank, wherein the organic matter detection sensor comprises a light source capable of emitting ultraviolet rays and a detection component matched with the light source and capable of detecting the organic matter content in water, and the detection component comprises
A detection tube through which the detected water can pass, the detection tube being penetrable by ultraviolet rays emitted from the light source;
a detection group ultraviolet receiver for detecting the intensity of ultraviolet rays emitted from the light source and penetrating the detection tube;
the detection group ultraviolet receiver is connected with the circuit board, the circuit board is used for calculating the content of organic matters in water passing through the detection tube according to the ultraviolet intensity received by the detection group ultraviolet receiver, and the circuit board is connected with the display module.
The organic matter detection sensor provided by the invention not only can effectively detect the content of organic matters in water, but also has few components and simple structure, so that the detection component with smaller volume and lower cost can be manufactured.
As an improvement, the organic matter detection sensor provided by the invention further comprises a shell, wherein the detection assembly is arranged in the shell: the shell is internally provided with a light source accommodating cavity or a light source accommodating hole allowing a light source to pass through, and the light source is arranged in the light source accommodating cavity or the light source accommodating hole; the shell is internally provided with a detection tube accommodating cavity communicated with the light source accommodating cavity or a light source accommodating hole allowing the light source to pass through, and the detection tube is arranged in the detection tube accommodating cavity; the detection group ultraviolet receiver is arranged in the shell and is opposite to the detection tube.
The light source is sleeved with an isolation shading protective sleeve, and the light source is sleeved with the isolation shading protective sleeve and then arranged in a light source accommodating cavity of the shell or penetrates through the light source accommodating hole; the isolation shading protective sleeve is provided with a detection light hole; the ultraviolet rays emitted by the light source penetrate through the detection tube to reach the ultraviolet receiver of the detection group after passing through the detection light holes. The function of the isolation shading protective sleeve is to isolate the light source and prevent the shell from aging caused by ultraviolet rays emitted by the light source and irradiation. The detection light holes are formed in the isolation shading protective sleeve, so that the light emission angle between the light source and the detection group ultraviolet receiver is smaller, and the uncertainty of detection data caused by refraction and reflection in the transmission process of light is reduced.
And the shell is connected with a water inlet connector and a water outlet connector which are respectively communicated with two ends of the detection tube.
And the water inlet joint and the water outlet joint are further improved, and sealing rings are arranged at the positions where the water inlet joint and the water outlet joint are connected with the two ends of the detection pipe.
And the circuit board is fixed on the shell, a detection light channel communicated with the accommodating cavity of the detection tube is arranged in the shell, and the ultraviolet receiver of the detection group is fixed on the circuit board and then positioned in the detection light channel.
The light source capable of emitting ultraviolet rays generally adopts an ultraviolet lamp, and the intensity of the ultraviolet rays emitted by the ultraviolet lamp can generate certain attenuation along with the extension of the service time, so as to improve the detection accuracy. The organic matter sensor further comprises a comparison component which is also arranged in the shell, wherein the comparison component has a better scheme that:
the control component comprises a control group ultraviolet receiver which can detect the intensity of ultraviolet rays emitted directly from the light source, the control group ultraviolet receiver is also connected with the circuit board, and the circuit board calculates the content of organic matters in water passing through the detection tube according to the intensity of the ultraviolet rays received by the detection group ultraviolet receiver and the intensity of the ultraviolet rays received by the control group ultraviolet receiver;
the isolation shading protective sleeve is provided with a contrast light hole, and the contrast group ultraviolet receiver is arranged in the shell and is opposite to the contrast light hole, so that ultraviolet rays emitted by the light source directly reach the contrast group ultraviolet receiver after passing through the contrast light hole. The contrast light holes are formed in the isolation shading protective sleeve, so that the light emission angle between the light source and the contrast ultraviolet receiver is smaller, and uncertainty of detection data caused by refraction and reflection in the transmission process of light is reduced.
The contrast assembly and the detection assembly can be arranged on the same side of the light source, and the detection light hole and the contrast light hole are positioned on the same side of the isolation shading protective sleeve; and a contrast light channel which is communicated with the contrast light hole and is opposite to the contrast light hole is arranged in the shell, and the contrast group ultraviolet receiver is arranged in the contrast light channel.
The contrast assembly and the detection assembly can also be symmetrically arranged at two opposite sides of the light source accommodating cavity, and the detection light transmission hole and the contrast light transmission hole are symmetrically arranged at two opposite sides of the isolation shading protective sleeve; the shell is provided with a comparison group ultraviolet receiver mounting hole which is opposite to the comparison light transmission hole, and the comparison group ultraviolet receiver is arranged in the comparison group ultraviolet receiver mounting hole.
The contrast subassembly and the detection subassembly can also be located the different sides outside the light source holding chamber, detect the light trap with contrast light trap sets up in keeping apart the same circumference different positions of shading protective sheath, and with keep apart the same circumference central point line of shading protective sheath between become 180 degrees contained angles of non-, be equipped with in the casing with contrast light trap intercommunication and just right contrast light passageway, contrast group ultraviolet receiver sets up in contrast light passageway.
The comparison component is preferably provided with:
a control tube which can be penetrated by ultraviolet rays emitted by the light source, wherein the control tube is internally vacuumized or provided with air or purified water;
a control group ultraviolet receiver for detecting the intensity of ultraviolet rays emitted from the light source and penetrating the control tube;
the control group ultraviolet receiver is also connected with the circuit board, and the circuit board calculates the organic matter content in the water passing through the detection tube according to the ultraviolet intensity received by the detection group ultraviolet receiver and the ultraviolet intensity received by the control group ultraviolet receiver.
The isolation shading protective sleeve can be provided with a contrast light transmission hole, and ultraviolet rays emitted by the light source pass through the contrast light transmission hole and then penetrate through the contrast tube to reach the contrast group ultraviolet ray receiver.
At this time, the comparison component and the detection component can be arranged on the same side of the light source, and the detection light hole and the comparison light hole are positioned on the same side of the isolation shading protective sleeve; a contrast tube accommodating cavity communicated with the contrast light holes is formed in the shell, and a contrast tube is arranged in the contrast tube accommodating cavity; the control group ultraviolet receiver is arranged in the shell and is opposite to the control tube, so that ultraviolet rays emitted by the light source penetrate through the control tube to reach the control group ultraviolet receiver after passing through the control light transmission hole.
The contrast assembly and the detection assembly can be symmetrically arranged at two opposite sides of the light source accommodating cavity, and the detection light holes and the contrast light holes are symmetrically arranged at two opposite sides of the isolation shading protective sleeve; a contrast tube accommodating cavity communicated with the contrast light holes is formed in the shell, and a contrast tube is arranged in the contrast tube accommodating cavity; the control group ultraviolet receiver is arranged in the shell and is opposite to the control tube, so that ultraviolet rays emitted by the light source penetrate through the control tube to reach the control group ultraviolet receiver after passing through the control light transmission hole.
The control component and the detection component can also be positioned at different sides outside the light source accommodating cavity, the detection light holes and the control light holes are arranged at different positions on the same circumference of the isolation shading protective sleeve, an included angle of non-180 degrees is formed between connecting lines of central points of the same circumference of the isolation shading protective sleeve, a control pipe accommodating cavity communicated with the control light holes is arranged in the shell, and the control pipe is arranged in the control pipe accommodating cavity; the control group ultraviolet receiver is arranged in the shell and is opposite to the control tube, so that ultraviolet rays emitted by the light source penetrate through the control tube to reach the control group ultraviolet receiver after passing through the control light transmission hole.
When the isolation shading protective sleeve is not specially provided with a contrast light hole and is only provided with a detection light hole, a light guide channel which is opposite to and communicated with the detection light hole, a light splitting channel which is vertically arranged in the middle part of the light guide channel, and a spectroscope which is used for uniformly dispersing ultraviolet rays in the light guide channel to two sides of the light splitting channel are arranged in the shell, and the detection tube accommodating cavity is arranged at one side of the light splitting channel; a contrast tube accommodating cavity is arranged at the other side of the light splitting channel in the shell, and a contrast tube is arranged in the contrast tube accommodating cavity; the control group ultraviolet receiver is arranged in the shell and is opposite to the control tube, so that ultraviolet rays emitted by the light source pass through the detection light transmission hole and the light guide channel, enter the light splitting channel through the spectroscope, penetrate through the control tube and reach the control group ultraviolet receiver.
The inner wall of the light guide channel is provided with a first isolation protective sleeve.
And a second isolation protective sleeve is arranged on the inner wall of the light splitting channel.
The invention also includes a temperature sensor in contact with the light source for detecting the temperature of the light source; when the organic matter content in the circuit board water, the main interference factor is the change of the light source, and the change of the light source is mainly due to the temperature, and the temperature of the light source can be gradually increased along with the prolonging of the service time of the light source; because in the characteristic of ultraviolet lamp, the intensity of ultraviolet can become stronger along with the temperature is higher, in order to improve the precision of detection, set up in the casing with the light source contact be used for detecting the temperature sensor of light source, then compensate through the temperature calculation result, can effectively improve the precision of detection.
The detection tube in the detection assembly is arranged below the water tank and is communicated with the water tank, the light source is arranged on one side of the detection tube, and the detection group ultraviolet receiver is arranged on the other opposite side of the detection tube.
The cavity is a detection tube in the detection assembly and is used for coating the light source and the detection group ultraviolet receiver, and the light source and the detection group ultraviolet receiver are both arranged in a water tank of the water heater. The water heater also comprises a display screen which is connected with the circuit board and used for displaying the organic matter content in the water tank.
Compared with the prior art, the invention has the advantages that: the water heater can detect the organic matter content in water entering the water tank or/and flowing out of the water tank or/and in the water tank through the organic matter detection sensor at the water inlet or/and the water outlet of the water tank or/and in the water tank; and then can utilize the organic matter content in the water that detects entering water tank or/and outflow water tank, judge whether inside the water heater or on the water heater pipeline breeds bacterium and virus to whether the user judges to clear up the maintenance to the water heater.
Drawings
FIG. 1 is a block diagram showing a water heater according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a first embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 3 is a perspective sectional view of a first embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 4 is an exploded perspective view of a first embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 5 is an exploded perspective view of an organic matter detection sensor according to another embodiment of the present invention;
FIG. 6 is a schematic perspective view of a second embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 7 is a cross-sectional view of a second embodiment of an organic matter detecting sensor according to the first embodiment of the present invention;
FIG. 8 is a cross-sectional view of a third embodiment of an organic matter detecting sensor according to the first embodiment of the present invention;
FIG. 9 is a cross-sectional view of a fourth embodiment of an organic matter detecting sensor according to the first embodiment of the present invention;
FIG. 10 is a cross-sectional view of a fifth embodiment of an organic matter detecting sensor according to the first embodiment of the present invention;
FIG. 11 is a schematic perspective view of a sixth embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 12 is a perspective sectional view showing a sixth embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 13 is a schematic perspective view of a seventh embodiment of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 14 is a perspective sectional view showing a seventh aspect of an organic matter detection sensor according to the first embodiment of the present invention;
FIG. 15 is a perspective sectional view showing an eighth embodiment of the organic matter detection sensor according to the first embodiment of the present invention;
FIG. 16 is a block diagram showing the connection of a water heater in a second embodiment of the present invention;
FIG. 17 is a block diagram showing the connection of a water heater according to a third embodiment of the present invention;
FIG. 18 is a block diagram showing a water heater according to a fourth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1
The water heater as shown in fig. 1 comprises a water tank 101 with a water inlet 102 and a water outlet 103, wherein an organic matter detection sensor 104 for detecting the organic matter content of water flowing out of the water tank is arranged at the water outlet 103 of the water tank 101, and the water heater further comprises a display screen 109 connected with the circuit board 4 and used for displaying the organic matter content of water in the water tank.
The organic matter detection sensor has various structures, and various schemes of the organic matter detection sensor structure will be described in detail below:
first scheme of organic matter detection sensor:
referring to fig. 2 to 5, the device comprises a light source 1 capable of emitting ultraviolet rays, a detection component matched with the light source 1 and capable of detecting the content of organic matters in water, and a comparison component matched with the detection component.
Wherein the detection assembly comprises
A detection tube 2 through which ultraviolet rays emitted from the light source 1 can penetrate, the water passing through the detection tube 2;
a detection group ultraviolet receiver 3 for detecting the intensity of ultraviolet rays emitted from the light source 1 and penetrating the detection tube 2;
the contrast subassembly includes:
a control tube 6 which can be penetrated by the ultraviolet rays emitted by the light source 1, wherein the control tube 6 is internally provided with air or purified water in a vacuum manner;
a control group ultraviolet receiver 5 for detecting the intensity of ultraviolet rays emitted from the light source 1 and penetrating the control tube 6;
the detection group ultraviolet receiver 3 and the comparison group ultraviolet receiver 5 are connected with the circuit board 4, and the circuit board 4 calculates the content of organic matters in the water passing through the detection tube 2 according to the ultraviolet intensity received by the detection group ultraviolet receiver 3 and the ultraviolet intensity received by the comparison group ultraviolet receiver 5.
In the scheme, the organic matter detection sensor comprises a shell 7 formed by assembling a first shell 7a and a second shell 7b, wherein a light source accommodating hole allowing a light source to pass through is formed in the middle part of the shell 7, and the light source 1 is arranged in the light source accommodating hole in a penetrating way; a detection tube accommodating cavity communicated with the light source accommodating hole is further formed in the first shell 7a, and the detection tube 2 is arranged in the detection tube accommodating cavity; the detection group ultraviolet receiver is disposed in the first housing 7a and is opposed to the detection tube 2. A contrast tube accommodating cavity communicated with the light source accommodating hole is formed in the second shell 7b, and a contrast tube 6 is arranged in the contrast tube accommodating cavity; the control group ultraviolet receiver 5 is provided in the second housing 7b and is opposed to the control tube 6.
The light source 1 is sleeved with an isolation shading protective sleeve 8, and the light source 1 is sleeved with the isolation shading protective sleeve 8 and then is penetrated in a light source accommodating hole of the shell 7; the isolation shading protective sleeve 8 is provided with a detection light hole 81; the ultraviolet rays emitted by the light source 1 pass through the detection light holes 81 and then penetrate through the detection tube 2 to reach the detection group ultraviolet receiver 3. The isolation shading protective sleeve 8 is also provided with a contrast light hole 82; the ultraviolet rays emitted from the light source 1 pass through the reference light holes 82 and then penetrate through the reference tube 6 to reach the reference ultraviolet receiver 5.
The first shell 7a is connected with a water inlet joint 71 and a water outlet joint 72 which are respectively communicated with the two ends of the detection tube 2, and sealing rings 73 are arranged at the positions where the water inlet joint 71 and the water outlet joint 72 are connected with the two ends of the detection tube 2.
The circuit board 4 may be fixed on the first housing 7a or on the second housing 7b, in this embodiment, the circuit board 4 is fixed on the first housing 7a, the comparison group ultraviolet receiver 5 is mounted on a side plate, the side plate is fixed on the second housing 7b, and the output end of the comparison group ultraviolet receiver 5 is connected with the circuit board 4 through a wire.
A detection light channel 74 communicated with the detection tube accommodating cavity is arranged in the first shell 7a, and the detection group ultraviolet receiver 3 is fixed on the circuit board 4 and then positioned in the detection light channel 74; a contrast light channel 75 is arranged in the second shell 7b and communicated with the contrast tube accommodating cavity, and the contrast group ultraviolet receiver 5 is positioned in the contrast light channel 75 after being fixed on the side plate.
In this scheme, contrast subassembly and detection component symmetry set up the opposite side at the light source holding hole, namely: the comparison component and the detection component are symmetrically arranged; the detection light holes 81 and the contrast light holes 82 are symmetrically arranged on two opposite sides of the isolation shading protective sleeve 8; the advantage of this arrangement is that the ultraviolet rays ingested by the detection group and the ultraviolet rays ingested by the control group come from the same circumferential position of the light source 1, so that the original light intensity of the ultraviolet rays ingested by the detection group and the control group differ little; the defects are that: however, if the light source is installed and the position is radially offset, a larger deviation occurs in the detection data acquired by the control component and the detection component.
The detection method of the organic matter detection sensor in the embodiment comprises the following steps:
step (1), vacuumizing a control tube 6, or keeping the control tube 6 full of air, or flushing purified water into the control tube 6, starting the light source 1, recording the ultraviolet intensity value received by the ultraviolet receiver 5 of the control group by the circuit board 4, and recording the ultraviolet intensity value as a first ultraviolet intensity reference value;
step (2), preparing N reference water samples with known organic matter content and different content, keeping the light source 1 on, respectively sequentially passing the N reference water samples through the reference tube 6, sequentially recording the ultraviolet intensity values received by the ultraviolet receiver 5 of the reference group when the N reference water samples flow through the reference tube 6 by the circuit board 4, and respectively recording the obtained N ultraviolet intensity values as a second ultraviolet intensity reference value, a third ultraviolet intensity reference value and a … … (n+1) th ultraviolet intensity reference value, wherein N is a natural number greater than or equal to 3;
step (3), obtaining a comparison table between the organic matter content in a comparison water sample and the ultraviolet intensity reference value according to the N ultraviolet intensity reference values obtained in the step (2);
step (4), keeping the light source 1 on, vacuumizing the control tube 6, or keeping the control tube 6 full of air, or flushing purified water into the control tube 6; the water to be measured flows through the detection tube 2, the circuit board 4 records the ultraviolet intensity value received by the ultraviolet receiver 3 of the detection group, the ultraviolet intensity value is recorded as an ultraviolet intensity detection value, meanwhile, the ultraviolet intensity value received by the ultraviolet receiver 5 of the comparison group is recorded as a temporary ultraviolet intensity reference value, the temporary ultraviolet intensity reference value is divided by the first ultraviolet intensity reference value to obtain a light source intensity attenuation proportion, the ultraviolet intensity detection value is multiplied by the light source intensity attenuation proportion to obtain an ultraviolet intensity search value, and then the ultraviolet intensity search value is adopted to obtain the organic matter content in the water to be measured at the moment by inquiring the comparison table obtained in the step 3.
In the above detection method, the main interference factor is the change of the light source, and the change of the light source is mainly due to the temperature, and the temperature of the light source gradually increases along with the use time of the light source; since the intensity of the ultraviolet light becomes stronger as the temperature becomes higher in the characteristics of the ultraviolet lamp, in order to further improve the detection accuracy, the housing 7 further includes a temperature sensor 11 in contact with the light source 1 for detecting the temperature of the light source 1; in the step (1) and the step (2), the light source 1 is kept on, then the temperature of the light source 1 is detected in real time through the temperature sensor 11, and a plurality of first ultraviolet intensity reference values, a plurality of second ultraviolet intensity reference values, a plurality of third ultraviolet intensity reference values and a plurality of (… …) n+1th ultraviolet intensity reference values of the light source (1) are recorded under different temperature values; then, the step (3) is to obtain a comparison table between the organic matter content in a comparison water sample and the ultraviolet forced reference value of the light source under different temperature values; finally, in the step (4), the light source (1) is kept on, the temperature of the light source (1) is detected in real time through the temperature sensor (11), and the organic matter content in the water to be detected at the moment is obtained through table lookup according to the temperature value of the current light source (1) and the current ultraviolet intensity detection value.
Second scheme of organic matter detection sensor:
referring to fig. 6 and 7, in contrast to the first version, the housing 7 includes only the detection assembly and no control assembly.
The detection method of the organic matter detection sensor in the scheme comprises the following steps:
step (1), vacuumizing a detection tube 2, or keeping the detection tube 2 full of air, or flushing purified water into the detection tube 2, then starting the light source 1, recording the ultraviolet intensity value received by the ultraviolet receiver 3 of the detection group by a circuit board 4, and recording the ultraviolet intensity value as a first ultraviolet intensity reference value;
step (2), preparing N parts of control water samples with known organic matter content and different content, keeping the light source 1 on, respectively sequentially passing the N parts of control water samples through the detection tube 2, sequentially recording the ultraviolet intensity values received by the detection group ultraviolet receiver 3 when the N parts of control water samples flow through the detection tube 2 by the circuit board 4, and respectively recording the obtained N parts of ultraviolet intensity values as a second ultraviolet intensity reference value, a third ultraviolet intensity reference value and a … … (n+1) th ultraviolet intensity reference value, wherein N is a natural number greater than or equal to 3;
step (3), obtaining a comparison table between the organic matter content and the ultraviolet intensity reference value in a comparison water sample according to the N+1 parts of the ultraviolet intensity reference values obtained in the step (1) and the step (2);
and (4) keeping the light source 1 on, enabling the water to be detected to flow through the detection tube 2, recording the ultraviolet intensity value received by the ultraviolet receiver 3 of the detection group by the circuit board 4, recording the ultraviolet intensity value as an ultraviolet intensity detection value, and obtaining the organic matter content in the water to be detected at the moment by inquiring the comparison table obtained in the step (3).
Third scheme of organic matter detection sensor:
unlike the first solution, the contrast assembly and the detection assembly are disposed on the same side of the light source 1, and the detection light hole 81 and the contrast light hole 82 are disposed on the same side of the isolation and shading protective sleeve 8; the internal structure of which is shown in figure 8.
In this embodiment, the advantage of the control component and the detection component on the same side is that when the position of the ultraviolet lamp is radially offset, the deviation of the intensity of the ultraviolet rays absorbed by the detection component and the control component is less; the defects are that: since there may be some deviation in the intensity of the light emitted from the ultraviolet lamp at different positions in the axial direction, in this embodiment, the uniformity of the light intensity of the ultraviolet lamp in the axial direction is required to be good.
The detection method of the organic matter detection sensor in this embodiment is the same as that of the first embodiment.
Fourth scheme of organic matter detection sensor:
unlike the first embodiment, the control module contains only the control ultraviolet receiver 5, no control tube is provided, and the control ultraviolet receiver 5 is directly disposed in the control light path 75, and its internal structure is shown in fig. 9. The ultraviolet rays emitted from the light source 1 directly reach the control group ultraviolet receiver 5 along the control light path 75 through the control light transmitting hole 82.
The detection method of the organic matter detection sensor in the embodiment comprises the following steps:
step (1), turning on the light source 1, and recording the ultraviolet intensity value received by the ultraviolet receiver 5 of the comparison group by the circuit board 4, and recording the ultraviolet intensity value as a first ultraviolet intensity reference value;
step (2), preparing N parts of control water samples with known organic matter content and different content, keeping the light source 1 on, respectively sequentially passing the N parts of control water samples through the detection tube 2, sequentially recording the ultraviolet intensity values received by the detection group ultraviolet receiver 3 when the N parts of control water samples flow through the detection tube 2 by the circuit board 4, and respectively recording the obtained N parts of ultraviolet intensity values as a second ultraviolet intensity reference value, a third ultraviolet intensity reference value and a … … (n+1) th ultraviolet intensity reference value, wherein N is a natural number greater than or equal to 3;
step (3), obtaining a comparison table between the organic matter content in a comparison water sample and the ultraviolet intensity reference value according to the N ultraviolet intensity reference values obtained in the step (2);
and (4) keeping the light source 1 on, enabling water to be detected to flow through the detection tube 2, recording the ultraviolet intensity value received by the ultraviolet receiver 3 of the detection group by the circuit board 4, recording the ultraviolet intensity value as an ultraviolet intensity detection value, recording the ultraviolet intensity value received by the ultraviolet receiver 5 of the comparison group at the same time, recording the ultraviolet intensity value as a temporary ultraviolet intensity reference value, dividing the temporary ultraviolet intensity reference value by a first ultraviolet intensity reference value to obtain a light source intensity attenuation proportion, multiplying the ultraviolet intensity detection value by the light source intensity attenuation proportion to obtain an ultraviolet intensity lookup value, and then adopting the ultraviolet intensity lookup value to obtain the organic matter content in the water to be detected at the moment by querying the comparison table obtained in the step (3).
Fifth scheme of organic matter detection sensor:
unlike the fourth embodiment, the control unit and the detection unit are disposed on the same side of the light source, and the housing has the same external configuration as the second embodiment, and the internal structure is shown in fig. 10.
The detection method of the organic matter detection sensor in this embodiment is the same as that in the fourth embodiment.
Sixth scheme of organic matter detection sensor:
different from the fourth scheme, the casing 7 is a whole, the comparison component and the detection component are located at different sides outside the light source accommodating cavity, the detection light holes 81 and the comparison light holes 82 are arranged at different positions on the same outer circumference of the isolation shading protective sleeve 8, and an included angle of non-180 degrees is formed between the connection line of the same circumference central point of the isolation shading protective sleeve 8, the included angle in the embodiment is 60 degrees, the appearance structure of the casing is shown in fig. 11, and the internal structure of the casing is shown in fig. 12.
Seventh scheme of organic matter detection sensor:
unlike the first solution, the isolation and shading protective sleeve 8 is provided with only one detection light hole 81, and the housing 7 is provided with a light guiding channel 76 opposite to and communicated with the detection light hole 81, a light splitting channel 77 with the middle part perpendicular to the light guiding channel 76, and a beam splitter 78 for uniformly dispersing the ultraviolet light in the light guiding channel 76 to two sides of the light splitting channel 77, wherein the beam splitter 78 is a triangular prism; the detection tube accommodating cavity is arranged at one side of the beam splitting channel 77; a control tube accommodating cavity is formed in the shell 7 and positioned at the other side of the light splitting channel 77, and a control tube 6 is arranged in the control tube accommodating cavity; the control group ultraviolet receiver 5 is disposed in the housing 7 and opposite to the control tube 6, so that the ultraviolet rays emitted by the light source 1 pass through the detection light transmission hole 81 and the light guiding channel 76, then enter the light splitting channel 77 through the spectroscope 78, and then penetrate through the control tube 2 to reach the control group ultraviolet receiver 5. The inner wall of the light guiding channel 76 is provided with a first isolation protective sleeve 9, and the inner wall of the light splitting channel 77 is provided with a second isolation protective sleeve 10, as shown in fig. 13 and 14.
In this embodiment, the ultraviolet light is split by the spectroscope 78, so as to ensure that the original intensity of the ultraviolet light of the detection combination control group is the same.
Eighth scheme of organic matter detection sensor:
unlike the fourth solution, a light source accommodating cavity is provided in the housing 7, the light source 1 is a small ultraviolet lamp or an LED ultraviolet lamp, and the light source 1 is integrally provided in the light source accommodating cavity, as shown in fig. 15.
Example two
Unlike the first embodiment, an organic matter detection sensor 104 for detecting the organic matter content of water entering the water tank 101 is also provided at the water inlet 102 of the water heater tank 101, as shown in fig. 16.
By detecting the organic matter content in the water inlet 102 and the water outlet 103 of the water heater tank 101, comparing the difference of the organic matter content in the water inlet and the water outlet, setting a difference value, judging whether bacteria and viruses are bred in the water heater or on the water heater pipeline, so that a user can judge whether to clean and maintain the water heater. If the difference reaches more than 5%, the user can drain water to remove bacterial and virus, and when the difference is less than 5%, the user can normally use hot water.
Example III
Unlike the first embodiment, the detection tube 2 in the detection assembly is disposed below the water tank 101 and communicates with the water tank 101, the light source 1 is disposed on one side of the detection tube 2, and the detection group ultraviolet receiver 3 is disposed on the other opposite side of the detection tube 2, as shown in fig. 17.
The detection tube 2 of the water heater water storage tank is made of quartz glass, the light source 1 generated by the light emitting module penetrates through water in the quartz glass detection tube 2, light absorbed by the water is received by the detection group ultraviolet receiver 3, and the circuit board 4 is used for calculating the content of organic matters in liquid passing through the detection cavity 2 according to the intensity of ultraviolet rays received by the detection group ultraviolet receiver 3.
Example IV
Unlike the third embodiment, the light source 1 and the detection group ultraviolet receiver 3 are covered with quartz glass, and the light source 1 and the detection group ultraviolet receiver 3 are disposed in a water tank of a water heater, as shown in fig. 18.
Claims (8)
1. A water heater comprising a tank (101) having a water inlet (102) and a water outlet (103), characterized in that: an organic matter detection sensor (104) for detecting the organic matter content in water entering the water tank (101) or/and exiting the water tank (101) or/and in the water tank (101) is arranged at the water inlet (102) or/and the water outlet (103) of the water tank (101), wherein the organic matter detection sensor comprises a light source (1) capable of emitting ultraviolet rays and a detection component matched with the light source (1) and capable of detecting the organic matter content in water, and the detection component comprises
A detection tube (2) capable of being penetrated by ultraviolet rays emitted from the light source (1), the water to be detected passing through the detection tube (2);
a detection group ultraviolet receiver (3) for detecting the intensity of ultraviolet rays emitted from the light source (1) and penetrating the detection tube (2);
the detection group ultraviolet receiver (3) is connected with the circuit board (4), and the circuit board (4) is used for calculating the content of organic matters in water passing through the detection tube (2) according to the intensity of ultraviolet rays received by the detection group ultraviolet receiver (3);
the organic matter detection sensor further comprises a shell (7), wherein a light source accommodating cavity or a light source accommodating hole allowing a light source to pass through is formed in the shell (7), and the light source (1) is arranged in the light source accommodating cavity or passes through the light source accommodating hole; a detection tube accommodating cavity communicated with the light source accommodating cavity or a light source accommodating hole allowing the light source to pass through is also formed in the shell (7), and the detection tube (2) is arranged in the detection tube accommodating cavity; the detection group ultraviolet receiver (3) is arranged in the shell (7) and is opposite to the detection tube (2);
the light source (1) is sleeved with an isolation shading protective sleeve (8), and the light source (1) is sleeved with the isolation shading protective sleeve (8) and then arranged in a light source accommodating cavity of the shell (7) or penetrates through the light source accommodating hole; a detection light hole (81) is formed in the isolation shading protective sleeve (8); the ultraviolet rays emitted by the light source (1) penetrate through the detection tube (2) after passing through the detection light transmission hole (81) and reach the detection group ultraviolet receiver (3);
the shell (7) is connected with a water inlet joint (71) and a water outlet joint (72) which are respectively communicated with two ends of the detection tube (2);
the parts of the water inlet joint (71) and the water outlet joint (72) connected with the two ends of the detection tube (2) are provided with sealing rings (73);
the circuit board (4) is fixed on the shell (7), a detection light channel (74) communicated with the accommodating cavity of the detection tube is arranged in the shell (7), and the detection group ultraviolet receiver (3) is fixed on the circuit board (4) and then positioned in the detection light channel (74);
the organic matter detection sensor further comprises a comparison component, wherein the comparison component comprises a comparison group ultraviolet receiver (5) capable of detecting the intensity of ultraviolet rays emitted directly from the light source (1), the comparison group ultraviolet receiver (5) is also connected with the circuit board (4), and the circuit board (4) calculates the content of organic matters in water passing through the detection tube (2) according to the intensity of the ultraviolet rays received by the detection group ultraviolet receiver (3) and the intensity of the ultraviolet rays received by the comparison group ultraviolet receiver (5);
the isolation shading protective sleeve (8) is provided with a contrast light hole (82), and the contrast group ultraviolet receiver (5) is arranged in the shell (7) and is opposite to the contrast light hole (82), so that ultraviolet rays emitted by the light source (1) directly reach the contrast group ultraviolet receiver (5) after passing through the contrast light hole (82).
2. The water heater as recited in claim 1, wherein: the contrast assembly and the detection assembly are arranged on the same side of the light source (1), and the detection light transmission hole (81) and the contrast light transmission hole (82) are positioned on the same side of the isolation shading protective sleeve (8); a contrast light channel (75) communicated with and opposite to the contrast light hole (82) is arranged in the shell (7), and the contrast ultraviolet receiver (5) is arranged in the contrast light channel (75).
3. The water heater as recited in claim 1, wherein: the contrast assembly and the detection assembly are symmetrically arranged on two opposite sides of the light source accommodating cavity, and the detection light transmission hole (81) and the contrast light transmission hole (82) are symmetrically arranged on two opposite sides of the isolation shading protective sleeve (8); the shell (7) is provided with a comparison ultraviolet receiver mounting hole which is opposite to the comparison light transmission hole (82), and the comparison ultraviolet receiver (5) is arranged in the comparison ultraviolet receiver mounting hole.
4. The water heater as recited in claim 1, wherein: the contrast subassembly is located the outside different sides of light source holding chamber with the detection subassembly, detect light trap (81) with contrast light trap (82) set up in keep apart light shielding protective sheath (8) same circumference different positions, and with keep apart between the same circumference central point line of light shielding protective sheath (8) and become non-180 degrees contained angle, be equipped with in casing (7) with contrast light trap (82) intercommunication and just contrast light passageway (75), contrast group ultraviolet receiver (5) set up in contrast light passageway (75).
5. The water heater as recited in claim 1, wherein: also comprises a temperature sensor (11) which is contacted with the light source (1) and is used for detecting the temperature of the light source (1).
6. The water heater as recited in claim 1, wherein: the detection tube (2) in the detection assembly is arranged below the water tank (101) and is communicated with the water tank (101), the light source (1) is arranged on one side of the detection tube (2), and the detection group ultraviolet receiver (3) is arranged on the other opposite side of the detection tube (2).
7. The water heater as recited in claim 1, wherein: the water tank (101) is a detection tube (2) in the detection assembly, the light source (1) and the detection group ultraviolet receiver (3) are coated, and the light source (1) and the detection group ultraviolet receiver (3) are arranged in the water tank (101) of the water heater.
8. The water heater as recited in claim 1, wherein: the water tank also comprises a display screen (109) which is connected with the circuit board (4) and used for displaying the organic matter content in the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693009.9A CN109386971B (en) | 2017-08-14 | 2017-08-14 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693009.9A CN109386971B (en) | 2017-08-14 | 2017-08-14 | Water heater |
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| Publication Number | Publication Date |
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| CN109386971A CN109386971A (en) | 2019-02-26 |
| CN109386971B true CN109386971B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710693009.9A Active CN109386971B (en) | 2017-08-14 | 2017-08-14 | Water heater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060034663A (en) * | 2006-03-24 | 2006-04-24 | (주)해동정수 | Organic analysis apparatus and method for pure/ultra pure water treatment system |
| CN102042963A (en) * | 2010-10-14 | 2011-05-04 | 长春理工大学 | Online detector for detecting total organic carbon (TOC) in sewage with ultraviolet spectrometry method |
| CN202869961U (en) * | 2012-08-21 | 2013-04-10 | 杭州希玛诺光电技术有限公司 | Mobile reference light path device for water quality analysis meter |
| CN103900261A (en) * | 2014-02-28 | 2014-07-02 | 芜湖美的厨卫电器制造有限公司 | Water heater and method for controlling ultraviolet sterilization of water heater |
| CN106679164A (en) * | 2016-12-07 | 2017-05-17 | 宁波帅康热水器有限公司 | Softening and purifying type water heater |
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2017
- 2017-08-14 CN CN201710693009.9A patent/CN109386971B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060034663A (en) * | 2006-03-24 | 2006-04-24 | (주)해동정수 | Organic analysis apparatus and method for pure/ultra pure water treatment system |
| CN102042963A (en) * | 2010-10-14 | 2011-05-04 | 长春理工大学 | Online detector for detecting total organic carbon (TOC) in sewage with ultraviolet spectrometry method |
| CN202869961U (en) * | 2012-08-21 | 2013-04-10 | 杭州希玛诺光电技术有限公司 | Mobile reference light path device for water quality analysis meter |
| CN103900261A (en) * | 2014-02-28 | 2014-07-02 | 芜湖美的厨卫电器制造有限公司 | Water heater and method for controlling ultraviolet sterilization of water heater |
| CN106679164A (en) * | 2016-12-07 | 2017-05-17 | 宁波帅康热水器有限公司 | Softening and purifying type water heater |
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| CN109386971A (en) | 2019-02-26 |
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