Water quality detection component, water quality detection equipment and water purifier

Abstract

The present invention provides a water quality detection component, a water quality detection device and a water purifier. The water quality detection component is used in the field of water quality detection equipment, and includes a shell with a first water flow channel and a first water quality detection unit. The first water quality detection unit includes a light source, a light sensor and a conversion layer. The conversion layer is arranged between the light sensor and the first water flow channel. The light emitted by the light source passes through the first water flow channel and the conversion layer in sequence and then enters the light sensor. The light is partially absorbed when passing through the first water flow channel. The light sensor is used to detect the intensity of the light after being partially absorbed. The conversion layer is used to convert the wavelength of the light into a wavelength that can be received by the light sensor. The water quality detection component proposed by the present invention converts the non-visible light emitted by the light source into visible light by setting a conversion layer between the light sensor and the first water flow channel. Compared with traditional non-visible light sensors, it can effectively reduce costs and has the advantage of simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a water quality detection component, water quality detection equipment and a water purifier. Background Art

[0002] In recent years, due to its unique advantages, non-visible light sources (especially ultraviolet light sources) have been widely used in many fields such as environmental bacteria and virus disinfection, full-spectrum health lighting, medical food testing and water quality testing and monitoring, and have become a hot topic in the industry. Especially in the field of water quality testing technology, non-visible light sources have become the core of international research due to their superior directivity, low power consumption and small size. At present, water quality detection components on the market often use ultraviolet, deep ultraviolet, mid-near infrared and other optical sensors in conjunction with non-visible light sources to achieve water quality detection. The specific principle is that non-visible light passes through the water body and then enters the optical sensor. By detecting the data of the optical sensor, the water quality data is calculated by the superposition algorithm. The specific water quality data is whether the total organic carbon (TOC, the total amount of organic matter in the water is expressed by the carbon content. Carbon is a common component of all organic matter and the main element of organic matter. The higher the TOC value of water, the higher the organic matter content in the water. Therefore, TOC can be used as an indicator to evaluate organic pollution in water quality) and other indicators meet the health and safety standards.

[0003] However, these optical sensors are expensive, difficult to produce, low cost-effective, and complex to use. For example, the commonly used deep ultraviolet UVC optical sensors are mainly based on gallium nitride (GaN) third-generation wide bandgap semiconductor materials, which are mainly controlled by European, American, and Korean companies such as Ubisense Limited in the UK, Seoul Viosys Co., Ltd. in South Korea, and SETi in the United States. Currently, only Suzhou Gamin Optoelectronics is producing domestic products, but it is not mature enough and has a low cost-effectiveness. The water quality detection components on the current market are restricted by the working principle and must purchase imported optical sensors, which have complex structures, high costs, and high manufacturing difficulties. Problems need to be solved. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a water quality detection component, water quality detection equipment and water purifier. By adding a conversion layer between the light source and the light sensor, the non-visible light emitted by the light source is converted into visible light and then emitted into the light sensor. This can not only realize the principle of non-visible light detection of water quality, but also replace the non-visible light sensor in traditional technology with a lower-priced visible light sensor to reduce the overall manufacturing cost. It has the advantages of simple structure and low manufacturing difficulty.

[0005] The present invention provides a water quality detection component, which is used in the field of water quality detection equipment, and includes a shell with a first water flow channel and a first water quality detection unit. The first water quality detection unit includes a light source, a light sensor and a conversion layer. The conversion layer is arranged between the light sensor and the first water flow channel. The light emitted by the light source passes through the first water flow channel and the conversion layer in sequence and then enters the light sensor. The light is partially absorbed when passing through the first water flow channel. The light sensor is used to detect the intensity of the light after being partially absorbed. The conversion layer is used to convert the wavelength of the light into a wavelength that can be received by the light sensor.

[0006] Furthermore, the light source and the light sensor are fixedly connected to the housing and are respectively arranged on both sides of the first water flow channel.

[0007] Furthermore, the water quality detection component also includes a light source board and a sensor board, which are respectively fixedly connected to the shell with a gap, and the light source and the light sensor are respectively fixedly arranged on one side of the light source board and the sensor board facing the first water flow channel.

[0008] Furthermore, the water quality detection component also includes a plurality of light-transmitting plates, and the shell is also provided with a plurality of detection ports, the light-transmitting plates cover the detection ports, and the detection ports and the light-transmitting plates are used to allow the light emitted by the light source to pass into and out of the first water flow channel.

[0009] Furthermore, the light sensor includes a visible light sensor.

[0010] Furthermore, the light source includes an ultraviolet light emitting diode or an infrared light emitting diode, the conversion layer corresponds to an ultraviolet light to visible light conversion layer or an infrared light to visible light conversion layer, and the conversion layer is coated on the surface of the light sensor or the surface of the shell.

[0011] Furthermore, the light source includes an ultraviolet light emitting diode and an infrared light emitting diode, and the light source selects one of them to emit light.

[0012] Furthermore, there is a gap between the light sensor and the shell, and the conversion layer includes a substrate and an ultraviolet light-to-visible light conversion layer and an infrared light-to-visible light conversion layer coated thereon in sections, and the conversion layer can be movably inserted into the gap between the light sensor and the shell to switch the corresponding conversion layer according to the type of the light source.

[0013] Furthermore, the first water quality detection unit also includes a temperature sensor, which is fixedly connected to the housing and is used to detect the temperature in the first water flow channel.

[0014] Furthermore, the first water quality detection unit further includes a TDS sensor, which is fixedly disposed on the housing and passes through the housing to contact the water in the first water flow channel.

[0015] Furthermore, the first water quality detection unit further comprises a temperature sensor, and the temperature sensor is fixedly connected to one end of the TDS sensor extending out of the housing.

[0016] Furthermore, a second water flow channel is provided in the shell, and the water quality detection component further includes a second water quality detection unit. The first water quality detection unit and the second water quality detection unit are used to detect the inlet water quality and the outlet water quality, respectively.

[0017] The present invention also provides a water quality detection device, comprising a computing component and a water quality detection component as described above, wherein the computing component is electrically connected to the optical sensor and is used to determine the water quality of the water in the first water flow channel based on the value of the optical sensor.

[0018] The present invention also provides a water purifier, comprising a water purification component and the water quality detection device as described above, wherein the water quality detection device is connected to the water outlet end of the water purification component and is used to detect the water quality of the outlet water.

[0019] To summarize, the embodiments of the present invention can convert the non-visible light emitted by the light source into visible light and then emit it into the light sensor by adding a conversion layer between the light source and the light sensor. This can not only realize the principle of detecting water quality using non-visible light, but also replace the non-visible light sensor in traditional technology with a lower-priced visible light sensor to reduce the overall manufacturing cost. It also has the advantages of simple structure and low manufacturing difficulty.

[0020] In addition, a TDS sensor is provided to detect the conductivity and metal ions in the water, and the water quality data is calculated together with the data from the optical sensor.

[0021] In addition, a temperature sensor is additionally provided. The temperature sensor can be set on the shell or at the end of the TDS sensor to detect the temperature in the water. Combined with the data of the optical sensor, the accuracy of the detection can be improved because the water quality is also related to the temperature.

[0022] Furthermore, a light source including an ultraviolet light emitting diode and an infrared light emitting diode can be provided to switch between ultraviolet light and infrared light, and a conversion layer including a substrate and an ultraviolet light-to-visible light conversion layer and an infrared light-to-visible light conversion layer coated thereon in sections can be used. When the light source emits ultraviolet light, the conversion layer is pulled so that the ultraviolet light-to-visible light conversion layer area covers the light sensor to convert ultraviolet light into visible light; when the light source emits infrared light, the conversion layer is pulled so that the infrared light-to-visible light conversion layer area covers the light sensor to convert infrared light into visible light. The advantage of this design is that infrared light and ultraviolet light can be switched to detect water quality according to needs and conditions, and the detected data is richer and the results are more accurate.

[0023] The water quality detection component also includes a second water quality detection unit, and the first water quality detection unit and the second water quality detection unit are used to detect the water quality of the incoming water and the water quality of the outgoing water respectively. For example, when used in a water purifier, the water quality before and after water purification can be detected, which is convenient for users to observe the water purification effect and ensure that the water purifier is working effectively.

[0024] In addition, the water quality detection components include light sensors, temperature sensors and TDS sensors. The use of algorithms combined with the above sensors can achieve the effect of detecting multiple data, such as temperature, conductivity, TDS, COD, TOC and UV, achieving the advantages of richer water quality detection data and more accurate detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The structure of the water quality detection component in the first embodiment of the present invention is shown in FIG. Figure 1 .

[0027] Figure 2 The structure of the water quality detection component in the first embodiment of the present invention is shown in FIG. Figure 2 .

[0028] Figure 3 The structure of the water quality detection component in the first embodiment of the present invention is shown in FIG. Figure 3 .

[0029] Figure 4 1 is a top view of the water quality detection component in the first embodiment of the present invention.

[0030] Figure 5 for Figure 4Section view along section line AA.

[0031] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure along the AA section line.

[0032] Figure 7 It is a bottom view of the water quality detection component in the first embodiment of the present invention.

[0033] Figure 8 It is a side sectional view of the water quality detection component in the second embodiment of the present invention.

[0034] Fig. 9 FIG. 4 is a top view of a conversion layer in a second embodiment of the present invention.

[0035] The reference numerals of the embodiments of the present invention in the above drawings are as follows:

[0036] 100, housing; 110, light source board; 120, sensor board; 130, light-transmitting board; 140, detection port; 150, sealing member; 160, gasket;

[0037] 200, a first water flow channel;

[0038] 300, first water quality detection unit; 310, light source; 320, light sensor; 330, conversion layer; 340, ultraviolet light to visible light conversion layer; 350, infrared light to visible light conversion layer; 360, temperature sensor; 370, TDS sensor; 380, substrate;

[0039] 400, second water flow channel;

[0040] 500. A second water quality detection unit. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0044] The terms "first", "second", "third", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0045] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0046] The following is a detailed description through specific embodiments.

[0047] like Figures 1 to 7 As shown, the first embodiment of the present invention provides a water quality detection component for use in the field of water quality detection equipment, including a housing 100 having a first water flow channel 200 and a first water quality detection unit 300, wherein the first water quality detection unit 300 includes a light source 310, a light sensor 320 and a conversion layer 330, wherein the conversion layer 330 is disposed between the light sensor 320 and the first water flow channel 200, and the light emitted by the light source 310 passes through the first water flow channel 200 and the conversion layer 330 in sequence and then enters the light sensor 320; the light is partially absorbed when passing through the first water flow channel 200, and the light sensor 320 is used to detect the intensity of the light after being partially absorbed, and the conversion layer 330 is used to convert the wavelength of the light into a wavelength that can be received by the light sensor 320.

[0048] In this embodiment, the light source 310 and the light sensor 320 are fixedly connected to the housing 100 and are respectively disposed on both sides of the first water flow channel 200. Figure 6 As shown, the light source 310 is arranged above the shell 100, and the light sensor 320 is arranged below the shell 100. The light emitted by the light source 310 passes through the light-transmitting plate 130, the first water flow channel 200, the light-transmitting plate 130, and the conversion layer 330 from top to bottom and then enters the light sensor 320.

[0049] In another implementation of this embodiment, the light source 310 and the light sensor 320 can also be arranged on the same side, and a reflector is arranged on the inner wall of the other side of the first water flow channel 200. The light source 310 is obliquely captured by the reflector at a preset angle and then refracted into the light sensor 320; the light emitted by the light source 310 passes through the light-transmitting plate 130, the first water flow channel 200, the reflector, the first water flow channel 200, and the light-transmitting plate 130 in sequence and then enters the light sensor 320. The advantage of this design is that the light source 310 and the light sensor 320 are arranged on the same side, only one light-transmitting plate 130 is needed, the structure is simpler, and the thickness is reduced.

[0050] In this embodiment, the water quality detection component also includes a light source board 110 and a sensor board 120, and the light source board 110 and the sensor board 120 are respectively fixedly connected to the shell 100 with a gap, and the light source 310 and the light sensor 320 are respectively fixedly arranged on the side of the light source board 110 and the sensor board 120 facing the first water flow channel 200.

[0051] Specifically, Figure 2 and Figure 3 As shown, the light source board 110 is used to fix the light source 310, and a pad is provided between the periphery of the light source board 110 and the housing 100 to provide a gap between the light source board 110 and the housing 100. The gap is used to accommodate the light source 310 so that the light emitted by the light source 310 is directed toward the first water flow channel 200.

[0052] Specifically, Figure 5 and Figure 6 As shown, a seal 150 is further provided outside the light source 310, and the seal 150 is provided between the light source board 110 and the housing 100. The seal 150, the light source board 110 and the housing 100 form a sealed light-proof space for reducing interference of external air and light on the light source 310. The seal 150 is a circular hollow ring with elastic and light-proof properties.

[0053] Specifically, Figure 2 and Figure 3 As shown, the sensor board 120 is used to fix the optical sensor 320, and a spacer is provided between the periphery of the sensor board 120 and the housing 100 to provide a gap between the sensor board 120 and the housing 100. The gap is used to accommodate the optical sensor 320, so that the receiving surface of the optical sensor 320 faces the first water flow channel 200.

[0054] Specifically, Figure 5 and Figure 6As shown, a seal 150 is further provided outside the optical sensor 320, and the seal 150 is provided between the sensor board 120 and the housing 100. The seal 150, the sensor board 120 and the housing 100 form a sealed light-proof space for reducing interference of external air and light on the optical sensor 320. The seal 150 is a circular hollow ring with elastic and light-proof properties.

[0055] In this embodiment, a screw-nut structure is provided to fix the light source board 110 , the housing 100 , and the sensor board 120 . The screws pass through the light source board 110 , the housing 100 , and the sensor board 120 to squeeze and fix the three together.

[0056] In this embodiment, the water quality detection component also includes a plurality of light-transmitting plates 130, and a plurality of detection ports 140 are also opened on the shell 100. The light-transmitting plates 130 cover the detection ports 140. The detection ports 140 and the light-transmitting plates 130 are used to allow light emitted by the light source 310 to enter and exit the first water flow channel 200.

[0057] Specifically, the housing 100 is made of an opaque material, and the detection port 140 is opened at a position corresponding to the light source 310 and the light sensor 320, so as to allow light to pass through the first water flow channel 200. A gasket 160 is provided between the light-transmitting plate 130 and the housing 100. The gasket 160 is made of an elastic material and is used to increase the sealing between the light-transmitting plate 130 and the housing 100 to prevent water leakage. During installation, the light source board 110 squeezes the seal 150, the seal 150 squeezes the light-transmitting plate 130, the light-transmitting plate 130 squeezes the gasket 160, and the gasket 160 squeezes the housing 100; the sensor board 120 on the other side squeezes the seal 150, the seal 150 squeezes the light-transmitting plate 130, the light-transmitting plate 130 squeezes the gasket 160, and the gasket 160 squeezes the housing 100.

[0058] In another implementation of this embodiment, the housing 100 can be made of a transparent material and have light transmittance. Figure 1 The shell shown wraps a part of the first water flow channel 200, the light source 310, the light sensor 320, etc. in the shell, and the shell itself is opaque, which plays a role of light shielding and sealing. In this embodiment, it is not necessary to open the detection port 140 on the shell 100, nor is it necessary to set the light-transmitting plate 130. Instead, the light transmittance of the shell 100 itself is relied on to allow light to pass through the first water flow channel 200, and the light source 310, the light sensor 320, etc. are shielded and sealed by relying on the opacity of the shell.

[0059] In this embodiment, the light sensor 320 includes a visible light sensor 320 .

[0060] In this embodiment, the light source 310 includes an ultraviolet light emitting diode or an infrared light emitting diode, and the conversion layer 330 corresponds to an ultraviolet light to visible light conversion layer 340 or an infrared light to visible light conversion layer 350 . The conversion layer 330 is coated on the surface of the light sensor 320 or the surface of the housing 100 .

[0061] Specifically, the non-visible light emitted by the light source 310 is converted into visible light after passing through the conversion layer 330 and is received by the visible light sensor 320. The present invention has conducted a test on the change between the light intensity of the non-visible light and the resistance of the visible light sensor 320. According to the experimental data, it is proved that when the COD concentration of the water in the first water flow channel 200 remains unchanged, there is a changing relationship between the light intensity of the non-visible light and the resistance of the visible light sensor 320. The present invention has also conducted a test on the change between the COD concentration of water and the resistance of the visible light sensor 320. According to the experimental data, it is proved that when the light intensity of the non-visible light remains unchanged, there is a changing relationship between the COD concentration of water and the resistance of the visible light sensor 320. Through the above two experiments, it is proved that the detection capability of the visible light sensor 320 is extended to the non-visible light range under the action of the conversion layer 330, and the function of water quality monitoring is realized. The optical sensor 320 is used to detect two data items, COD and TOC.

[0062] Specifically, the light intensity emitted by the light source 310 is ;

[0063] The light intensity transmitted after passing through the first water flow channel 200 ;

[0064] Solution concentration (COD) of water in the first water flow channel 200 ;

[0065] Fluorescence intensity ;

[0066] in ;

[0067] The data output by the light sensor 320 is a resistance value. ;

[0068] ;

[0069] ;

[0070] ;

[0071] ;

[0072] make ;

[0073] but ;

[0074] ;

[0075] Within the monitored parameter range, the resistance changes slightly and the rate of change is even smaller. ;

[0076] Right now ;

[0077] make ;

[0078] but ;

[0079] That is, the solution concentration (COD) of the water in the first water flow channel 200 and the resistance Proportional to the resistance The solution concentration (COD) of the water in the first water flow channel 200 can be calculated based on the data.

[0080] Specifically, if a photodiode (transistor) is selected as the light sensor 320, the current output by the photodiode (transistor) is ,in is the photoelectric conversion coefficient. , , ;

[0081] but ;

[0082] The solution concentration (COD) of water in the first water flow channel 200 may be calculated by detecting the photocurrent data of the optical sensor 320 .

[0083] Specifically, the light source 310 preferably has a short-wavelength deep ultraviolet light in the range of 220nm to 280nm. The preferred value is 254nm short-wavelength deep ultraviolet light. Compared with other non-visible light, 254nm short-wavelength deep ultraviolet light has better disinfecting ability and absorption effect, and the accuracy of water quality detection is higher.

[0084] Specifically, 254nm short-wave deep ultraviolet light (UVC) is often used to cross-link DNA and RNA. When irradiated on a sample containing DNA or RNA, DNA-DNA or RNA-RNA cross-links can be formed, thereby fixing it on a gel or membrane.

[0085] Specifically, infrared light has a heating effect. Infrared light in a specific wavelength range can heat water, and has the effect of high-temperature disinfection and high-temperature decomposition of certain harmful substances.

[0086] Specifically, the conventional visible light sensor 320 detects a specified wavelength range (i.e., visible light) and cannot detect non-visible light such as ultraviolet light and infrared light. In the present invention, in order to expand the detection range of the visible light sensor 320 to cover the wavelengths of ultraviolet light, infrared light, etc., a conversion layer 330 is provided between the optical sensor 320 and the first water flow channel 200, which is used to convert the non-visible light emitted by the light source 310 into visible light and then emit it into the visible light sensor 320. Specifically, the conversion layer 330 is provided on the surface of the optical sensor 320 or the outer surface of the housing 100, so as to achieve the effect of expanding the detection wavelength band of the visible light sensor 320, so that the visible light sensor 320 can replace the non-visible light sensor 320 of the conventional technology.

[0087] Specifically, the non-visible light emitted by the light source 310 passes through the detection target area (i.e., the first water flow channel 200) and then enters the light sensor 320 through the light-transmitting plate 130, and a conversion layer 330 is disposed on the outer surface of the light-transmitting plate 130 or the surface of the light sensor 320. The conversion layer 330 can be coated on the outer surface of the light-transmitting plate 130 or on the surface of the light sensor 320.

[0088] Specifically, it is a common technology that the conversion layer 330 converts non-visible light into visible light, which is usually achieved by fluorescent materials or phosphorescent materials. These materials will be excited after receiving non-visible light and then release visible light.

[0089] Here are some common methods:

[0090] Fluorescence conversion method, some substances have fluorescent properties, that is, they can emit visible light after absorbing radiation. For example, some fluorescent dyes or fluorescent powders can absorb far-infrared light and emit visible light. This technology is widely used in some far-infrared laser pointers, laser printers and communication equipment.

[0091] Phosphorescent materials can also convert far infrared radiation into visible light. These materials absorb energy when excited and release visible light over a longer period of time. Phosphorescent conversion is commonly used in some luminous watches, fluorescent indicators and ambient light sources310.

[0092] Phosphor coating: Some surface coatings or paints contain phosphors, which emit visible light when exposed to far-infrared radiation. This technology can be used to improve nighttime visibility, such as in traffic signs and nighttime safety equipment.

[0093] In general, non-visible light can be converted into visible light using fluorescence conversion or phosphorescence conversion technology, thereby achieving observation or application within the visible light range.

[0094] Specifically, the fluorescent powder coating method adopted in this embodiment is to mix the fluorescent material with glue to form the conversion layer 330. The fluorescent material is related to the wavelength of the non-visible light emitted by the light source 310. For example, when the light source 310 is ultraviolet light, a fluorescent powder of 200nm to 400nm can be selected. This fluorescent pigment is made of rare earth oxide and a trace amount of activator and is calcined. The main material is colorless or light-colored. Under the irradiation of ultraviolet light (200nm to 400nm), it presents visible light of various colors due to the different types and contents of metals and activators in the fluorescent pigment. The basic colors are five visible colors: red, yellow, blue, green, and purple. Due to the different wavelengths of the excited non-visible light (short-wave deep ultraviolet 254nm; long-wave shallow ultraviolet 365nm to 395nm), the color of the visible light is slightly different.

[0095] Specifically, the coating method of the conversion layer 330 is to select glue with different components according to the surface material of the light sensor 320 or the material of the light-transmitting plate 130, add fluorescent powder to the glue, and coat it on the surface of the light sensor 320 or the outer surface of the light-transmitting plate 130 through ultrasonic stirring and spraying.

[0096] In this embodiment, the first water quality detection unit 300 further includes a temperature sensor 360, which is fixedly connected to the housing 100 and is used to detect the temperature in the first water flow channel 200. Specifically, the temperature sensor 360 can be arranged in the first water flow channel 200 to detect the temperature of the water. Since water quality detection is also related to temperature, the temperature sensor 360 can improve the accuracy of water quality detection, and on the other hand, it can also increase the amount of water quality detection data and improve the detection capability of the water quality detection component.

[0097] In this embodiment, the first water quality detection unit 300 further includes a TDS sensor 370, which is fixedly disposed on the housing 100 and passes through the housing 100 to contact the water in the first water flow channel 200. Specifically, the TDS sensor 370 is used to detect two data items, conductivity and TDS, and combined with the detection items of the light sensor 320 and the temperature sensor 360, the water quality can be detected more accurately.

[0098] In this embodiment, the first water quality detection unit 300 further includes a temperature sensor 360, and the temperature sensor 360 is fixedly connected to one end of the TDS sensor 370 extending out of the housing 100. Specifically, since the TDS sensor 370 is made of a high thermal conductivity material such as titanium, and the TDS sensor 370 needs to extend into the first water flow channel 200 to contact the water, the water temperature can be inferred by detecting the temperature of one end of the TDS sensor 370.

[0099] In this embodiment, a second water flow channel 400 is also provided in the housing 100, and the water quality detection assembly further includes a second water quality detection unit 500. The first water quality detection unit 300 and the second water quality detection unit 500 are respectively used to detect the inlet water quality and the outlet water quality. Specifically, the first water flow channel 200 and the second water flow channel 400 can be connected to a water outlet at the same time, which is equivalent to two sets of water quality detection units detecting the same water source. The two detection data can be compared to increase the reliability and accuracy of the detection. If the two detection data differ greatly, a warning can be issued. The first water flow channel 200 and the second water flow channel 400 can also be conveniently connected to two water outlets. For example, the first water flow channel 200 is connected to the water inlet of the water purifier, and the second water flow channel 400 is connected to the water outlet of the water purifier, which are respectively used to detect the inlet water quality and the outlet water quality to ensure that the water purifier is working effectively, and the working capacity of the water purifier can also be detected.

[0100] like Figure 8 and Fig. 9 As shown, the second embodiment of the present invention also provides another water quality detection component, in which a substrate 380 structure is added between the light-transmitting plate 130 and the light sensor 320, and the conversion layer 330 includes the substrate 380 and the ultraviolet light-to-visible light conversion layer 340 and the infrared light-to-visible light conversion layer 350 coated on the substrate 380. Other structures are consistent with the first embodiment of the present invention.

[0101] In this embodiment, the light source 310 includes an ultraviolet light emitting diode and an infrared light emitting diode, and the light source 310 selects one of them to emit light.

[0102] In this embodiment, there is a gap between the light sensor 320 and the housing 100, and the conversion layer 330 includes a substrate 380 and an ultraviolet light-to-visible light conversion layer 340 and an infrared light-to-visible light conversion layer 350 coated thereon in sections. The conversion layer 330 is movably inserted into the gap between the light sensor 320 and the housing 100, and is used to switch the corresponding conversion layer 330 according to the type of the light source 310. The ultraviolet light-to-visible light conversion layer 340 or the infrared light-to-visible light conversion layer 350 is covered between the light sensor 320 and the housing 100 by pulling the substrate 380. The substrate 380 includes two groups of ultraviolet light-to-visible light conversion layers 340 and infrared light-to-visible light conversion layers 350 arranged in parallel, which are respectively arranged at both ends of the substrate 380. When the non-visible light emitted by the light source 310 is ultraviolet light, the substrate 380 is pulled out so that the two ultraviolet light-to-visible light conversion layers 340 just cover the space between the two light sensors 320 and the housing 100; when the non-visible light emitted by the light source 310 is infrared light, the substrate 380 is pulled out so that the two infrared light-to-visible light conversion layers 350 just cover the space between the two light sensors 320 and the housing 100.

[0103] The third embodiment of the present invention provides a water quality detection device, including a computing component and a water quality detection component as described above, wherein the computing component is electrically connected to the optical sensor 320, and is used to determine the water quality of the water in the first water flow channel 200 based on the value of the optical sensor 320. The computing component is a single chip microcomputer, and the computing component can also be connected to the temperature sensor 360 and the TDS sensor 370, and the detection data of multiple sensors is combined to improve the data accuracy of the water quality detection and the data items of the water quality detection.

[0104] The fourth embodiment of the present invention provides a water purifier, including a water purification component and the above water quality detection device, the water quality detection device is connected to the water outlet of the water purification component, and is used to detect the water quality of the water outlet. The water quality detection device is connected to the water outlet of the water purifier, and is used to detect the water quality of the water outlet to ensure that the water purifier is working effectively.

[0105] The fifth embodiment of the present invention provides a water purifier, including a water purification component and two water quality detection devices as described above, the two water quality detection devices are respectively connected to the water inlet and the water outlet of the water purification component, and are respectively used to detect the water quality of the inlet water and the water quality of the outlet water. One of the water quality detection devices is connected to the water inlet of the water purifier, and the other water quality detection device is connected to the water outlet of the water purifier, and is respectively used to detect the water quality of the inlet water and the water quality of the outlet water, to ensure that the water purifier is working effectively, and can also detect the working capacity of the water purifier.

[0106] To summarize, the embodiment of the present invention can convert the non-visible light emitted by the light source 310 into visible light by adding a conversion layer 330 between the light source 310 and the light sensor 320, and then emit the non-visible light into the light sensor 320. This can not only realize the principle of non-visible light detection of water quality, but also replace the non-visible light sensor 320 in traditional technology with a lower-priced visible light sensor 320 to reduce the overall manufacturing cost. It also has the advantages of simple structure and low manufacturing difficulty.

[0107] In addition, a TDS sensor 370 is provided to detect the conductivity and metal ions in the water, and the water quality data is calculated in combination with the data from the optical sensor 320.

[0108] In addition, a temperature sensor 360 is provided. The temperature sensor 360 can be provided on the housing 100 or at the end of the TDS sensor 370 to detect the temperature in the water. Combined with the data of the optical sensor 320, the accuracy of the detection can be improved because the water quality is also related to the temperature.

[0109] Furthermore, a light source 310 including an ultraviolet light emitting diode and an infrared light emitting diode can be provided to switch between ultraviolet light and infrared light, and cooperate with a conversion layer 330 including a substrate 380 and an ultraviolet light-to-visible light conversion layer 340 and an infrared light-to-visible light conversion layer 350 coated thereon in sections. When the light source 310 emits ultraviolet light, the conversion layer 330 is pulled so that the ultraviolet light-to-visible light conversion layer 340 area covers the light sensor 320, which is used to convert ultraviolet light into visible light; when the light source 310 emits infrared light, the conversion layer 330 is pulled so that the infrared light-to-visible light conversion layer 350 area covers the light sensor 320, which is used to convert infrared light into visible light. The advantage of this design is that infrared light and ultraviolet light can be switched to detect water quality according to needs and conditions, and the detected data is richer and the results are more accurate.

[0110] The water quality detection component also includes a second water quality detection unit 500. The first water quality detection unit 300 and the second water quality detection unit 500 are used to detect the water quality of the incoming water and the water quality of the outgoing water, respectively. For example, when used in a water purifier, the water quality before and after water purification can be detected, which is convenient for users to observe the water purification effect and ensure that the water purifier is working effectively.

[0111] Moreover, the water quality detection component includes a light sensor 320, a temperature sensor 360 and a TDS sensor 370. By combining the above-mentioned multiple sensors with an algorithm, the effect of detecting multiple data can be achieved, such as temperature, conductivity, TDS, COD, TOC and UV, so as to achieve the advantages of richer water quality detection data and more accurate detection accuracy.

[0112] Through fluorescence conversion, sensors in the visible light band, such as photoresistors, photodiodes, phototransistors and other low-cost detectors, can be converted into detectors of invisible light bands, thereby simplifying the sensing system, improving cost performance, replacing imported detectors, and achieving a wider range of uses. The advantages of simplifying the detection range of the optical sensor 320 to the visible light band, improving the performance of the optical sensor 320, reducing the technical difficulty of the optical sensor 320, and improving the cost performance of the optical sensor 320 are achieved.

[0113] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A water quality detection component, used in the field of water quality detection equipment, characterized in that: It comprises a shell with a first water flow channel and a first water quality detection unit, the first water quality detection unit comprises a light source, a light sensor and a conversion layer, the conversion layer is arranged between the light sensor and the first water flow channel, the light emitted by the light source passes through the first water flow channel and the conversion layer in sequence and then enters the light sensor; the light is partially absorbed when passing through the first water flow channel, the light sensor is used to detect the light intensity after being partially absorbed, and the conversion layer is used to convert the wavelength of the light into a wavelength that can be received by the light sensor; the conversion layer comprises a substrate and an ultraviolet light to visible light conversion layer and an infrared light to visible light conversion layer coated thereon in sections; the ultraviolet light to visible light conversion layer or the infrared light to visible light conversion layer is covered between the light sensor and the shell by pulling the substrate; the substrate comprises two groups of the ultraviolet light to visible light conversion layer and the infrared light to visible light conversion layer arranged in parallel, which are respectively arranged at both ends of the substrate.

2. The water quality detection component according to claim 1, characterized in that: The light source and the light sensor are fixedly connected to the housing and are respectively arranged on both sides of the first water flow channel.

3. The water quality detection component according to claim 1, characterized in that: The water quality detection component also includes a light source plate and a sensor plate, which are respectively fixedly connected to the shell with a gap, and the light source and the light sensor are respectively fixedly arranged on one side of the light source plate and the sensor plate facing the first water flow channel.

4. The water quality detection component according to claim 1, characterized in that: The water quality detection component also includes a plurality of light-transmitting plates. The shell is also provided with a plurality of detection ports. The light-transmitting plates cover the detection ports. The detection ports and the light-transmitting plates are used to allow the light emitted by the light source to pass into and out of the first water flow channel.

5. The water quality detection component according to claim 1, characterized in that: The light sensor includes a visible light sensor.

6. The water quality detection component according to claim 5, characterized in that: The light source includes an ultraviolet light emitting diode or an infrared light emitting diode, the conversion layer is an ultraviolet light to visible light conversion layer or an infrared light to visible light conversion layer, and the conversion layer is coated on the surface of the light sensor or the surface of the shell.

7. The water quality detection assembly according to claim 5, characterized in that: The light source comprises an ultraviolet light emitting diode and an infrared light emitting diode, and the light source selects one of them to emit light.

8. The water quality detection assembly according to claim 7, characterized in that: There is a gap between the light sensor and the shell, and the conversion layer includes a substrate and an ultraviolet light-to-visible light conversion layer and an infrared light-to-visible light conversion layer coated thereon in sections. The conversion layer can be movably inserted into the gap between the light sensor and the shell to switch the corresponding conversion layer according to the type of the light source.

9. The water quality detection component according to claim 1, characterized in that: The first water quality detection unit further includes a temperature sensor, which is fixedly connected to the housing and is used to detect the temperature in the first water flow channel.

10. The water quality detection component according to claim 1, characterized in that: The first water quality detection unit further includes a TDS sensor, which is fixedly disposed on the housing and passes through the housing to contact the water in the first water flow channel.

11. The water quality detection component according to claim 10, characterized in that: The first water quality detection unit further includes a temperature sensor, and the temperature sensor is fixedly connected to one end of the TDS sensor extending out of the housing.

12. The water quality detection assembly according to claim 1, characterized in that: A second water flow channel is also provided in the shell, and the water quality detection component further includes a second water quality detection unit. The first water quality detection unit and the second water quality detection unit are used for detecting the inlet water quality and the outlet water quality respectively.

13. A water quality testing device, characterized in that: It comprises a computing component and a water quality detection component as described in any one of claims 1 to 12, wherein the computing component is electrically connected to the optical sensor and is used to determine the water quality of the water in the first water flow channel based on the value of the optical sensor.

14. A water purifier, characterized in that: It comprises a water purification component and a water quality detection device as described in claim 13, wherein the water quality detection device is connected to the water outlet end of the water purification component and is used to detect the water quality of the outlet water.

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